MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'Journal of Biophysics' source. Thu, 09 Feb 2012 20:29:20 +0100 http://www.medworm.com/index.php?rid=5593693&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fecam%2F2012%2F596524%2F Lepidium sativum is widely used in folk medicine for treatment of hyperactive airways disorders, such as asthma, bronchitis and cough. The crude extract of Lepidium sativum (Ls.Cr) inhibited carbachol (CCh, 1 μM-) and K+ (80 mM-) induced contractions in a pattern similar to that of dicyclomine. Ls.Cr at 0.03 mg/mL produced a rightward parallel shift of CCh curves, followed by nonparallel shift at higher concentration (0.1 mg/mL), suppressing maximum response, similar to that caused by dicyclomine. Pretreatment of tissues with Ls.Cr (0.1–0.3 mg/mL) shifted Ca++ concentration-response curves (CRCs) to right, as produced by verapamil. Ls.Cr at low concentrations (0.03–0.1 mg/mL) caused leftward shift of isoprenaline-induced inhibito... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593693 Mon, 16 Jan 2012 03:35:01 +0100 5593693 http://www.medworm.com/index.php?rid=5593692&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fid%2F2012%2F191245%2F We report a patient with an incidental diagnosis of Dirofilaria infection confirmed by histopathological findings of a subcutaneous nodule on the right thigh. The source of infection remains unknown. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593692 Mon, 16 Jan 2012 03:35:01 +0100 5593692 http://www.medworm.com/index.php?rid=5593691&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fdentistry%2F2012%2F463903%2F We report an adolescent, otherwise, healthy patient whose periodontal status was sound. Shortly after undergoing preparations for orthodontic treatment consisting of orthodontic separators, he presented with a periodontal abscess for which there was no apparent etiology. A non-orthoradial X-ray was inconclusive, but an appropriate one revealed a subgingival orthodontic separator as the cause of the abscess. Removal of the separator and thorough scaling led to complete resolution of the abscess, but there was already residual mild damage to the alveolar bone. Summary. Failure to use appropriate imaging to reveal the cause of gingival abscesses can result in the delay of implementing treatment and halting irreversible alveolar bone loss. An inflammatory process restricted to the gingiva and ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593691 Mon, 16 Jan 2012 03:35:01 +0100 5593691 http://www.medworm.com/index.php?rid=5593690&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fapc%2F2011%2F275695%2F This paper reports the growth of MgO nanofilms on BaMgAl10O17:Eu2+ blue phosphors by using the atomic layer deposition method. MgO films were prepared at 120°C by using Mg(CpEt)2 and H2O as the precursor and reactant gas, respectively. X-ray photoelectron spectroscopy (XPS) analysis showed that the Mg peak of the coated powders was higher than that of the uncoated powders. This confirmed that the surface of the coated phosphor powder comprised MgO nanoscale film. Through TEM and FE-SEM analysis, it was observed that the growth rate was about 0.33 Å/cycle and that the surface morphology of the coated phosphors was smoother and clearer than that of uncoated phosphor. The photoluminescence (PL) intensity for the coated phosphors was 5%–19% higher than that of uncoated... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593690 Mon, 16 Jan 2012 03:35:01 +0100 5593690 http://www.medworm.com/index.php?rid=5593689&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjfsa%2F2012%2F542607%2F A new summability method of series is introduced and studied. The particular cases of this method are, for example, variable-order Cesaro and Riesz methods. Applications to divergence problem of Fourier series are given. An extension of Kolmogorov, Schipp, and Bočkarev’s well-known theorems on divergence of Fourier trigonometric, Walsh, and orthonormal series is established. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593689 Mon, 16 Jan 2012 03:35:01 +0100 5593689 http://www.medworm.com/index.php?rid=5593688&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Foncmed%2F2012%2F301437%2F 35-year-old male presented with multiple swellings in left leg, headache, weakness of limbs for 4 months, and blurring of vision for the last 15 days. On examination, he was pale, cachexic with generalized lymphadenopathy and lower motor neuron type weakness of limbs sparing right upper limb. Blood investigations showed anemia with high alkaline phosphatase. Chest radiograph revealed osteosclerotic metastatic lesion in humerus. Biopsy of leg lesion revealed atypical neurofibroma. Computed tomography (CT) of thorax revealed osteoblastic metastasis. Bone marrow aspiration showed cells with round to oval nuclei, fine granular chromatin with large central prominent nucleoli and eosinophilic cytoplasm with acini formation. Magnetic resonance imaging (MRI) of brain and spinal cord defined metast... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593688 Mon, 16 Jan 2012 03:35:01 +0100 5593688 http://www.medworm.com/index.php?rid=5593687&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjfsa%2F2012%2F693251%2F We introduce the Besov-Schatten spaces Bp(ℓ2), a matrix version af analytic Besov space, and we compute the dual of this space showing that it coincides with the matricial Bloch space introduced previously in Popa (2007). Finally we compute the space of all Schur multipliers on B1(ℓ2). (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593687 Mon, 16 Jan 2012 03:35:01 +0100 5593687 http://www.medworm.com/index.php?rid=5593686&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faaa%2F2012%2F530468%2F We firstly construct a concrete semi-invex set which is not invex. Basing on concept of semi-invex set, we introduce some kinds of generalized convex functions, which include semi-(B,G)-preinvex functions, strictly semi-(B,G)-preinvex functions and explicitly semi-(B,G)-preinvex functions. Moreover, we establish relationships between our new generalized convexity and generalized convexity introduced in the literature. With these relationships and the well-known results pertaining to common generalized convexity, we obtain results for our new generalized convexities. We extend the existing results in the literature. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593686 Mon, 16 Jan 2012 03:35:01 +0100 5593686 http://www.medworm.com/index.php?rid=5593685&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjfsa%2F2012%2F894527%2F Let C(n)(D×D¯) be a Banach space of complex-valued functions f(x,y) that are continuous on D×D¯, where D={z∈C:|z|<1} is the unit disc in the complex plane C, and have nth partial derivatives in D×D which can be extended to functions continuous on D×D¯, and let CA(n)=CA(n)(D×D) denote the subspace of functions in C(n)(D×D¯) which are analytic in D×D (i.e., CA(n)=C(n)(D×D¯)∩Hol(D×D)). The double integration operator is defined in CA(n) by the formula Wf(z,w)=∫0z∫0wf(u,v)dv du. By using the method of Duhamel product for the functions in two variables, we describe the commutant of the restricted operator W∣Ezw, where Ezw={f... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593685 Mon, 16 Jan 2012 03:35:01 +0100 5593685 http://www.medworm.com/index.php?rid=5593684&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Forthopedics%2F2011%2F459812%2F Treatment of adult femoral shaft fractures typically involves operative stabilization with intramedullary implants, external fixation, or a plate and screw construct. However, when stabilization is delayed for any reason, use of a traction pin is recommended to stabilize the fracture, prevent significant shortening, as well as to help with pain control. In this paper, we present the rare complication of a severe gas gangrene infection caused by Clostridium perfringens that led to several amputations and ultimately death. We also discuss risks of temporary skeletal traction and techniques to overcome the morbidity of such a procedure. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593684 Mon, 16 Jan 2012 03:35:01 +0100 5593684 http://www.medworm.com/index.php?rid=5593683&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjeph%2F2012%2F641010%2F Conclusions. Safety investments are essential for promoting physical activity among older adults in Brazil. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593683 Mon, 16 Jan 2012 03:35:01 +0100 5593683 http://www.medworm.com/index.php?rid=5593682&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fhepatology%2F2011%2F603757%2F We present a 59-year-old male with newly diagnosed MTC, who was admitted with ALF. He presented with jaundice, hepatic encephalopathy, and synthetic dysfunction. His clinical course was marked by rapid decompensation within 6 days from initial presentation of jaundice to development of hepatic coma. Although liver metastases from medullary thyroid cancer have been reported, to our knowledge, this is the first described case of MTC resulting in acute liver failure. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593682 Mon, 16 Jan 2012 03:35:01 +0100 5593682 http://www.medworm.com/index.php?rid=5593681&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fpsi%2F2012%2F975097%2F Eyelid bags and blepharochalasis are the result of relaxation of lid structures like the skin, the orbicularis oculi, and mainly the orbital septum. Therefore, this aged appearance cannot be improved sufficiently with only a skin and orbicularis oculi resection. To improve this appearance, we use a very effective method of tucking of the orbital septum with infraeyebrow excision of the skin and the orbicularis oculi. Between January 2005 and April 2011, 103 patients (206 lids) were treated. There were 89 female and 14 male patients whose ages ranged from 43 to 75 years (mean = 65.2 years). After infraeyebrow excision, blepharoplasty with tucking of the orbital septum, the concealed lid crease becomes apparent and a good rejuvenation effect is obtained in all patients. (Source: Journal of B... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5593681 Mon, 16 Jan 2012 03:35:01 +0100 5593681 http://www.medworm.com/index.php?rid=5550037&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Forthopedics%2F2011%2F735789%2F Bone metastasis in the hand is rare. The etiology of metastatic hand cancers is different from other bones. Bronchogenic carcinoma is the most common primary tumor metastasis to hand. In this paper a rare case of thumb metastasis from “follicular-type carcinoma” of the thyroid is presented. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550037 Thu, 29 Dec 2011 18:49:14 +0100 5550037 http://www.medworm.com/index.php?rid=5550036&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnm%2F2011%2F793135%2F Nanopowders of 3NiAl and Al2O3 were synthesized from 3NiO and 5Al powders by high-energy ball milling. Nanocrystalline Al2O3 reinforced composite was consolidated by high-frequency induction-heated sintering within 3 minutes from mechanochemically synthesized powders of Al2O3 and 3NiAl. The advantage of this process is that it allows very quick densification to near theoretical density and inhibition grain growth. Nanocrystalline materials have received much attention as advanced engineering materials with improved physical and mechanical properties. The relative density of the composite was 97%. The average Vickers hardness and fracture toughness values obtained were 804 kg/mm2 and 7.5 MPa⋅m1/2, respectively. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550036 Thu, 29 Dec 2011 18:49:14 +0100 5550036 http://www.medworm.com/index.php?rid=5550035&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fddns%2F2011%2F732164%2F Our aim in this paper is to establish some explicit bounds of the unknown function in a certain class of nonlinear dynamic inequalities in two independent variables on time scales which are unbounded above. These on the one hand generalize and on the other hand furnish a handy tool for the study of qualitative as well as quantitative properties of solutions of partial dynamic equations on time scales. Some examples are considered to demonstrate the applications of the results. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550035 Thu, 29 Dec 2011 18:49:14 +0100 5550035 http://www.medworm.com/index.php?rid=5550034&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fmpe%2F2011%2F128479%2F We generalize the results obtained by Jun and Min (2009) and use fixed point method to obtain the stability of the functional equation f(x+σ(y))=F[f(x),f(y)], for a class of functions of a vector space into a Banach space where σ is an involution. Then we obtain the stability of the differential equations of the form y′=F[q(x),P(x)y(x)]. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550034 Thu, 29 Dec 2011 18:49:14 +0100 5550034 http://www.medworm.com/index.php?rid=5550033&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcrim%2F2011%2F136396%2F Methaemoglobinaemia is a potentially life-threatening complication of problem drug use. This is a case report of a 29-year-old man who presented himself cyanosed after a cocaine binge. It highlights the diagnosis and management of this condition from an acute medical perspective. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550033 Thu, 29 Dec 2011 18:49:14 +0100 5550033 http://www.medworm.com/index.php?rid=5550032&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjam%2F2011%2F340192%2F This paper proposes an improved predictor-corrector interior-point algorithm for the linear complementarity problem (LCP) based on the Mizuno-Todd-Ye algorithm. The modified corrector steps in our algorithm cannot only draw the iteration point back to a narrower neighborhood of the center path but also reduce the duality gap. It implies that the improved algorithm can converge faster than the MTY algorithm. The iteration complexity of the improved algorithm is proved to obtain O(nL) which is similar to the classical Mizuno-Todd-Ye algorithm. Finally, the numerical experiments show that our algorithm improved the performance of the classical MTY algorithm. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550032 Thu, 29 Dec 2011 18:49:14 +0100 5550032 http://www.medworm.com/index.php?rid=5550031&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijad%2F2011%2F501862%2F Alzheimer's disease susceptibility genes, APP and gamma-secretase, are involved in the herpes simplex life cycle, and that of other suspect pathogens (C. pneumoniae, H. pylori, C. neoformans, B. burgdorferri, P. gingivalis) or immune defence. Such pathogens promote beta-amyloid deposition and tau phosphorylation and may thus be causative agents, whose effects are conditioned by genes. The antimicrobial effects of beta-amyloid, the localisation of APP/gamma-secretase in immunocompetent dendritic cells, and gamma secretase cleavage of numerous pathogen receptors suggest that this network is concerned with pathogen disposal, effects which may be abrogated by the presence of beta-amyloid autoantibodies in the elderly. These autoantibodies, as well as those to nerve growth factor and tau, a... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550031 Thu, 29 Dec 2011 18:49:14 +0100 5550031 http://www.medworm.com/index.php?rid=5550030&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjce%2F2011%2F275758%2F Conclusions. This study highlights that diagnosis with ancillary immunohistochemical studies will change incidence and survival of precisely defined lung cancer subtypes. It calls attention to the need for cautious interpretation of studies and clinical trials, where the diagnosis was based on histology unaccompanied by IHC studies, and to the need of standardised diagnostic procedures. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550030 Thu, 29 Dec 2011 18:49:13 +0100 5550030 http://www.medworm.com/index.php?rid=5550029&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fpsyche%2F2011%2F617478%2F Many organisms participate in symbiotic relationships with other organisms, yet studies of symbioses typically have focused on the reciprocal costs and benefits within a particular host-symbiont pair. Recent studies indicate that many ecological interactions involve alliances of symbionts acting together as mutualistic consortia against other consortia. Such interacting consortia are likely to be widespread in nature, even if the interactions often occur in a cryptic fashion. Little theory and empirical data exist concerning how these complex interactions shape ecological outcomes in nature. Here, we review recent work on fungal-fungal interactions between two consortia: (i) leaf-cutting ants and their symbiotic fungi (the latter grown as a food crop by the former) and (ii) tropical plants... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5550029 Thu, 29 Dec 2011 18:49:13 +0100 5550029 http://www.medworm.com/index.php?rid=5542414&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faans%2F2011%2F374816%2F Multilayer perceptron (MLP) with back-propagation learning rule is adopted to predict the winning rates of two teams according to their official statistical data of 2006 World Cup Football Game at the previous stages. There are training samples from three classes: win, draw, and loss. At the new stage, new training samples are selected from the previous stages and are added to the training samples, then we retrain the neural network. It is a type of on-line learning. The 8 features are selected with ad hoc choice. We use the theorem of Mirchandani and Cao to determine the number of hidden nodes. And after the testing in the learning convergence, the MLP is determined as 8-2-3 model. The learning rate and momentum coefficient are determined in the cross-learning. The prediction accuracy ach... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5542414 Mon, 26 Dec 2011 13:36:30 +0100 5542414 http://www.medworm.com/index.php?rid=5542413&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijp%2F2011%2F156456%2F The effects of pH value, VUV intensity, initial dye concentration, initial H2O2 concentration, and TiO2 loading dose on the degradation of three azo dyes: acid Orange 8, acid Blue 29, and acid Blue 113 were studied to explore and compare the treatment efficiencies among the adopted AOPs. It was found that pH played an important role in the degradation of dyes using VUV irradiation. For VUV/H2O2, VUV/TiO2, and VUV/TiO2/H2O2 processes, the decoloration rates of the three azo dyes were more efficient under acidic conditions relative to alkaline conditions. The degradation rates of dyes increased with increasing concentrations of H2O2, but reaction rates were retarded at high concentrations of H2O2 because the H2O2 compound acted as a scavenger of the hydroxyl radical. In this paper, three azo... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5542413 Mon, 26 Dec 2011 13:36:30 +0100 5542413 http://www.medworm.com/index.php?rid=5542412&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fogi%2F2011%2F609370%2F Primary cilia are nonmotile, microtubule-based, antenna-like organelles projecting from the apical surface of most mammalian cells. Elegant studies have established the importance of ciliary structure and function in signal transduction and the sensory roles of cilia in maintaining healthy cellular state. In particular, dysfunctional cilia have been implicated in a large number of diseases mainly characterized by the presence of fluid-filled cysts in various organs. Aside from polycystic kidney disease (PKD), however, the roles of cilia in polycystic liver disease (PLD), polycystic pancreas disease (PPD), and polycystic ovarian syndrome (PCOS) are still very vague. In addition, although gender and sex hormones are known to regulate cyst formation, their roles in regulating physiological fu... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5542412 Mon, 26 Dec 2011 13:36:30 +0100 5542412 http://www.medworm.com/index.php?rid=5542411&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjam%2F2011%2F712194%2F This paper processes a unification of Fuzzy TOPSIS and Data Envelopment Analysis (DEA) to select the units with most efficiency. This research is a two-stage model designed to fully rank the organizational alternatives, where each alternative has multiple inputs and outputs. First, the alternative evaluation problem is formulated by Data Envelopment Analysis (DEA) and separately formulates each pair of units. In the second stage, we use the opinion of experts to be applied into a model of group Decision-Making (DM) called the Intuitionistic Fuzzy TOPSIS (IFT) method. The results of both methods are then multiplied to obtain the results. DEA and Intuitionistic Fuzzy TOPSIS ranking do not replace the DEA classification model; rather, it furthers the analysis by providing full ranking in the ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5542411 Mon, 26 Dec 2011 13:36:30 +0100 5542411 http://www.medworm.com/index.php?rid=5542410&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faaa%2F2011%2F328914%2F This paper studies the second-order nonlinear neutral delay difference equation Δ[anΔ(xn+bnxn−τ)+f(n,xf1n,…,xfkn)]+g(n,xg1n,…,xgkn)=cn, n≥n0. By means of the Krasnoselskii and Schauder fixed point theorem and some new techniques, we get the existence results of uncountably many bounded nonoscillatory, positive, and negative solutions for the equation, respectively. Ten examples are given to illustrate the results presented in this paper. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5542410 Mon, 26 Dec 2011 13:36:30 +0100 5542410 http://www.medworm.com/index.php?rid=5542409&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijog%2F2011%2F950838%2F Signal transmission in ocean using water as a channel is a challenging process due to attenuation, spreading, reverberation, absorption, and so forth, apart from the contribution of acoustic signals due to ambient noises. Ambient noises in sea are of two types: manmade (shipping, aircraft over the sea, motor on boat, etc.) and natural (rain, wind, seismic, etc.), apart from marine mammals and phytoplanktons. Since wind exists in all places and at all time: its effect plays a major role. Hence, in this paper, we concentrate on estimating the effects of wind. Seven sets of data with various wind speeds ranging from 2.11 m/s to 6.57 m/s were used. The analysis is performed for frequencies ranging from 100 Hz to 8 kHz. It is found that a linear relationship between ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5542409 Mon, 26 Dec 2011 13:36:30 +0100 5542409 http://www.medworm.com/index.php?rid=5520804&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijde%2F2011%2F628459%2F We study stochastic partly dissipative lattice systems with random coupled coefficients and multiplicative/additive white noise in a weighted space of infinite sequences. We first show that these stochastic partly dissipative lattice differential equations generate a random dynamical system. We then establish the existence of a tempered random bounded absorbing set and a global compact random attractor for the associated random dynamical system. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520804 Tue, 20 Dec 2011 13:20:46 +0100 5520804 http://www.medworm.com/index.php?rid=5520803&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcrp%2F2011%2F740957%2F To determine whether obesity, inflammation, or conventional risk factors are related to depressive symptoms (DeprSy) in the general population. Responses to 3 questions served to assess sense of depression. Body mass index (BMI), C-reactive protein (CRP), and other epidemiologic data of participants were available. In 1940, individuals who consulted a psychiatrist in the preceding year, or felt depressed (together DeprSy), 248 were female. Logistic regressions for adjusted associations of BMI with DeprSy were not significant as was serum CRP level. Diabetes and, in men, fasting glucose concentrations were associated with DeprSy. Systolic blood pressure (SBP) was robustly inversely associated with DeprSy in diverse models at ORs of 0.74 (95%CI 0.63; 0.89) independent of confounders, includi... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520803 Tue, 20 Dec 2011 13:20:46 +0100 5520803 http://www.medworm.com/index.php?rid=5520802&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijde%2F2011%2F520840%2F Advection equations appear often in large-scale mathematical models arising in many fields of science and engineering. The Crank-Nicolson scheme can successfully be used in the numerical treatment of such equations. The accuracy of the numerical solution can sometimes be increased substantially by applying the Richardson Extrapolation. Two theorems related to the accuracy of the calculations will be formulated and proved in this paper. The usefulness of the combination consisting of the Crank-Nicolson scheme and the Richardson Extrapolation will be illustrated by numerical examples. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520802 Tue, 20 Dec 2011 13:20:46 +0100 5520802 http://www.medworm.com/index.php?rid=5520801&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnm%2F2011%2F876287%2F Titanium/aluminum ohmic contacts to tapered n-type GaN nanowires with triangular cross-sections were studied. To extract the specific contact resistance, the commonly used transmission line model was adapted to the particular nanowire geometry. The most Al-rich composition of the contact provided a low specific contact resistance (mid 10−8 Ωcm2) upon annealing at 600 °C for 15 s, but it exhibited poor thermal stability due to oxidation of excess elemental Al remaining after annealing, as revealed by transmission electron microscopy. On the other hand, less Al-rich contacts required higher annealing temperatures (850 or 900 °C) to reach a minimum specific contact resistance but exhibited better thermal stability. A spread in the specific c... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520801 Tue, 20 Dec 2011 13:20:46 +0100 5520801 http://www.medworm.com/index.php?rid=5520800&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fapc%2F2011%2F450325%2F Magnetic isotope effect can cause mass-independent isotope fractionation, which can be used to predict the mechanisms of chemical reactions. In this critical paper, the isotope fractionation caused by magnetic isotope effect is used to understand detailed mechanisms of oxidation-reduction reactions for some previously published experimental data. Due to the rule that reactions are allowed for certain electron spin state, and forbidden for others, magnetic isotopes show chemical anomalies during these reactions due to the hyperfine interaction of the nuclear spin with the electron spin. It is demonstrated that compound or complex in paramagnetic (triplet) state accepts electrons during the reactions of electron transfer. Also, ligand field strength is responsible for the magnitude and the s... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520800 Tue, 20 Dec 2011 13:20:46 +0100 5520800 http://www.medworm.com/index.php?rid=5520799&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Forthopedics%2F2011%2F329745%2F We present a case in which epiphyseal fracture occurred at the origin of the conjoined tendon following excessive muscle contraction. We believe this represents the first description of such a method of injury. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520799 Tue, 20 Dec 2011 13:20:46 +0100 5520799 http://www.medworm.com/index.php?rid=5520798&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjam%2F2011%2F712704%2F We consider flows on a spherical surface and use a transformation to transport some well-known periodic two-dimensional vortex streets to that spherical surface to arrive at some new expressions for vortex streets on a sphere. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520798 Tue, 20 Dec 2011 13:20:46 +0100 5520798 http://www.medworm.com/index.php?rid=5520797&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbb%2F2011%2F920763%2F Acute aortic dissection (AAD) is a serious vascular disease. Currently the diagnosis relies on clinical and radiological means whereas serum biomarkers are lacking. The purpose of this study was to identify potential serum biomarkers for AAD using isobaric tags for relative and absolute quantitation (iTRAQ) approach. A total of 120 serum samples were collected from three groups: AAD patients (n=60), patients with acute myocardial infarction (AMI, n=30), and healthy volunteers (n=30), whereas the first 10 samples from each group were used for iTRAQ analysis. Using iTRAQ approach, a total of 174 proteins were identified as significantly different between AAD patients and healthy subjects. Among them, forty-six proteins increased more than twofold, full-scale analysis using serum sample for t... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520797 Tue, 20 Dec 2011 13:20:46 +0100 5520797 http://www.medworm.com/index.php?rid=5520796&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijped%2F2011%2F783893%2F Conclusions. Hydrocortisone was effective in reducing the FiO2, MAP, and PaCO2 and facilitated extubation. Hydrocortisone was not associated with cerebral palsy. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520796 Tue, 20 Dec 2011 13:20:46 +0100 5520796 http://www.medworm.com/index.php?rid=5520795&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fvasmed%2F2011%2F508171%2F A 19-year-old male patient presented cyanosis and dyspnoea because of the presence of multiple pulmonary arteriovenous fistulas resulting in oxygen desaturation. The CTA revealed that intestinal and splenic venous blood bypasses the liver and drains into the inferior vena cava. This is the first reported case of hepatopulmonary syndrome caused by congenital extrahepatic portosystemic shunt in which intestinal and splenic venous blood bypasses the liver and drains into the inferior vena cava. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520795 Tue, 20 Dec 2011 13:20:46 +0100 5520795 http://www.medworm.com/index.php?rid=5520794&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcrim%2F2011%2F271560%2F We report a 33-year-old Malay woman presented with acute left dense hemiparesis and an NIHSS score of 11/15. Computed tomography (CT) scan brain showed a massive right middle cerebral artery (MCA) territory infarct. The right internal carotid artery (ICA) and right proximal MCA were shown occluded from digital substraction angiography (DSA). Carotid dissection, carotid canal anomaly, and intercavernous communication were systematically ruled out. She had no risk factors for atherosclerosis. The connective tissue screening and thrombophilic markers were negative. However, she was anaemic on admission and subsequent investigations revealed that she had alpha-thalassemia and iron deficiency anaemia. The right ICA remained occluded from a repeat CT cerebral angiogram after one year, but otherw... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520794 Tue, 20 Dec 2011 13:20:46 +0100 5520794 http://www.medworm.com/index.php?rid=5520793&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjp%2F2011%2F370458%2F The aim of this study was to evaluate the impact of folic acid use in pregnancy for the reduction of neural tube defects (NTDs) in the northwest region of Iran. We studied 243 women with pregnancies complicated by some forms of birth defect(s). These patients were identified by medical diagnostic tests as having a fetus with some types of congenital anomalies. The prevalence of NTDs among pregnant women who were referred for therapeutic termination of pregnancy was 24.7 percent. Consumption of folic acid prevented NTDs by 79 percent (Odds Ratio = 0.21, CI 95%: 0.12–0.40) and 94 percent (Odds Ratio = 0.06, CI 95%: 0.03–0.15) compared to pregnancies complicated by other anomalies and normal pregnancies, respectively.... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520793 Tue, 20 Dec 2011 13:20:46 +0100 5520793 http://www.medworm.com/index.php?rid=5520792&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faaa%2F2011%2F375897%2F We derive several subordination results for a certain class of analytic functions defined by the Sălăgean operator In the present investigation. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520792 Tue, 20 Dec 2011 13:20:46 +0100 5520792 http://www.medworm.com/index.php?rid=5520791&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjam%2F2011%2F951960%2F We study the heat equation in n dimensional by Diamond Bessel operator. We find the solution by method of convolution and Fourier transform in distribution theory and also obtain an interesting kernel related to the spectrum and the kernel which is called Bessel heat kernel. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520791 Tue, 20 Dec 2011 13:20:46 +0100 5520791 http://www.medworm.com/index.php?rid=5520790&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fdm%2F2011%2F190572%2F Five patients with type V skin were studied to describe the clinical manifestations, pathological features, and treatment response in hypopigmented mycosis fungoides (HMF). The mean age of patients was 22.4 years at diagnosis, with a mean of 36 months of diagnostic delay. Two were children aged 11 and 13 years. Skin patches were limited to sunlight-covered body areas. In tropical climate, exposure to natural sunlight possibly cured the lesions on sun-exposed areas at early stage of onset. HMF may frequently be misinterpreted as eczema, vitiligo, or progressive macular hypomelanosis clinically and histopathologically as seen in our case series. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5520790 Tue, 20 Dec 2011 13:20:46 +0100 5520790 http://www.medworm.com/index.php?rid=5512862&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fophmed%2F2011%2F183647%2F Glaucoma drainage implants (GDIs) are used to treat paediatric glaucoma resistant to conventional medical and surgical treatment, achieving good intraocular pressure (IOP) control and long-term success. Late endophthalmitis is a rare complication that may develop following GDI surgery. A 17-year-old male presented with acute endophthalmitis 2 years after Ahmed glaucoma valve implantation with pericardial patch graft for management of refractory glaucoma secondary to congenital ectropion uveae. The glaucoma tube was exposed due to erosion of the overlying conjunctiva with no visible pericardial graft. After control of active infection, he underwent tube revision surgery whereby the exposed tube was retained and repatched with a double-thickness pericardial patch graft. He did well following... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5512862 Sat, 17 Dec 2011 13:51:44 +0100 5512862 http://www.medworm.com/index.php?rid=5501457&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fape%2F2011%2F581306%2F Novel method of space-vector-based pulse-width modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive on the base of asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage-source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC sources. Detailed MATLAB-based simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501457 Wed, 14 Dec 2011 15:17:29 +0100 5501457 http://www.medworm.com/index.php?rid=5501456&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjam%2F2011%2F831892%2F We deduce the explicit expressions for (P+Q)D and (PQ)D of two matrices P and Q under the conditions P2Q=PQP and Q2P=QPQ. Also, we give the upper bound of |P+QD-PD|2. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501456 Wed, 14 Dec 2011 15:17:29 +0100 5501456 http://www.medworm.com/index.php?rid=5501455&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fgrp%2F2011%2F218342%2F Conclusions. It was concluded that H2 receptor antagonists may be more effective than PPIs for recovering the bowel motility in the intraabdominal sepsis situation. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501455 Wed, 14 Dec 2011 15:17:29 +0100 5501455 http://www.medworm.com/index.php?rid=5501454&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fddns%2F2011%2F174376%2F We first study how to make use of the Marotto theory to prove rigorously the existence of the Li-Yorke chaos in diffusively coupled map lattices with open boundary conditions (i.e., a high-dimensional discrete dynamical system). Then, the recent 0-1 test for chaos is applied to confirm our theoretical claim. In addition, we control the chaotic motions to a fixed point with delay feedback method. Numerical results support the theoretical analysis. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501454 Wed, 14 Dec 2011 15:17:29 +0100 5501454 http://www.medworm.com/index.php?rid=5501453&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjs%2F2011%2F406425%2F Developmental work towards a camera phone diagnostic platform applying localized surface plasmon resonance (LSPR) label-free sensing is presented. The application of spherical gold nanoparticles and nanorods are considered and assessed against ease of application, sensitivity, and practicality for a sensor for the detection of CCL2 (chemokine ligand 2). The sensitivity of the platform is compared with that of a commercial UV/Vis spectrometer. The sensitivity of the camera phone platform is found to be 30% less than that of the commercial system for an equivalent incubation time, but approaches that of the commercial system as incubation time increases. This suggests that the application of LSPR sensing on a portable camera phone devices may be a highly effective label-free approach for... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501453 Wed, 14 Dec 2011 15:17:29 +0100 5501453 http://www.medworm.com/index.php?rid=5501452&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnm%2F2011%2F531217%2F The present study explored the feasibility of using hexagonal-phase NaYF4:Ce,Tb,Gd nanocrystals as bimodal probes for fluorescence and magnetic resonance (MR) imaging. Using a facile and user-friendly strategy, the NaYF4:Ce,Tb,Gd nanocrystals were synthesized with good water dispensability, high quantum yield (26%), and decent MR T1 relaxivity (r1=2.87 mM−1 s−1). The NaYF4:Ce,Tb,Gd NCs conjugated by folic acid presented great efficiency in fluorescence imaging of C6 glioma cells in vitro. Meanwhile, in in vivo MR experiments on rats, the NaYF4:Ce,Tb,Gd NCs also significantly increased T1 signal in the liver, spleen, and ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501452 Wed, 14 Dec 2011 15:17:29 +0100 5501452 http://www.medworm.com/index.php?rid=5501451&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fddns%2F2011%2F271928%2F Based on a predator-prey differential system with continuously distributed delays, we derive a corresponding difference version by using the method of a discretization technique. A good understanding of permanence of system and global attractivity of positive solutions of system is gained. An example and its numerical simulations are presented to substantiate our theoretical results. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5501451 Wed, 14 Dec 2011 15:17:29 +0100 5501451 http://www.medworm.com/index.php?rid=5492838&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjdd%2F2011%2F195146%2F In this study, to obtain the further desirable blood-glucose lowering profile of insulin glargine, we investigated the effects of β-cyclodextrin sulfate (Sul-β-CyD) and sulfobutylether β-cyclodextrin (SBE7-β-CyD) on physicochemical properties of insulin glargine and pharmacokinetics/pharmacodynamics of insulin glargine after subcutaneous injection to rats. Sul-β-CyD and SBE7-β-CyD increased solubility of insulin glargine. SBE7-β-CyD suppressed the formation of oligomer and enhanced the dissolution rate of insulin glargine from its precipitate, compared to that of Sul-β-CyD. Additionally, we revealed that after subcutaneous administration of an insulin glargine solution, SBE7-β-CyD, but not Sul-β-CyD, increased bioavailab... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5492838 Sun, 11 Dec 2011 15:12:29 +0100 5492838 http://www.medworm.com/index.php?rid=5492837&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faaa%2F2011%2F503679%2F We show that the following K0-monoid properties of C*-algebras in the class Ω are inherited by simple unital C*-algebras in the class TAΩ: (1) pseudocancellation property, (2) weakly divisible, (3) strongly separative, (4) separative, and (5) preminimal. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5492837 Sun, 11 Dec 2011 15:12:29 +0100 5492837 http://www.medworm.com/index.php?rid=5492836&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijmi%2F2011%2F548123%2F Despite the important role of cannabinoid CB1 receptors (CB1R) in brain development, little is known about their status during adolescence, a critical period for both the development of psychosis and for initiation to substance abuse. In the present study, we assessed the ontogeny of CB1R in adolescent and adult rats in vivo using positron emission tomography with [18F]MK-9470. Analysis of covariance (ANCOVA) to control for body weight that would potentially influence [18F]MK-9470 values between the two groups revealed a main effect of age (F(1,109)=5.0, P=0.02) on [18F]MK-9470 absolute binding (calculated as percentage of injected dose) with adult estimated marginal means being higher compared to adolescents amongst 11 brain regions. This finding was confirmed using in vitro autoradiograp... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5492836 Sun, 11 Dec 2011 15:12:29 +0100 5492836 http://www.medworm.com/index.php?rid=5492835&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjps%2F2011%2F152942%2F Graphical models are useful for characterizing conditional and marginal independence structures in high-dimensional distributions. An important class of graphical models is covariance graph models, where the nodes of a graph represent different components of a random vector, and the absence of an edge between any pair of variables implies marginal independence. Covariance graph models also represent more complex conditional independence relationships between subsets of variables. When the covariance graph captures or reflects all the conditional independence statements present in the probability distribution, the latter is said to be faithful to its covariance graph—though in general this is not guaranteed. Faithfulness however is crucial, for instance, in model selection procedures ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5492835 Sun, 11 Dec 2011 15:12:29 +0100 5492835 http://www.medworm.com/index.php?rid=5483712&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fidog%2F2011%2F842652%2F Conclusion. The inconsistent association between condom use and BV in prior studies could be from reporting bias. We found evidence of a relationship between semen exposure and incident BV. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483712 Thu, 08 Dec 2011 14:34:42 +0100 5483712 http://www.medworm.com/index.php?rid=5483711&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Foncmed%2F2011%2F805893%2F Anaplastic large cell lymphoma (ALCL) is the second most common malignancy of T-cell phenotype. This case report describes an unusual rapidly progressing cutaneous anaplastic large T-cell lymphoma in an HIV patient. Our patient is a twenty-year-old African American male with perinatally acquired HIV who presented with a 2×2 centimeter necrotic lesion in the right 1st toe; however, 2-3 weeks later multiple smaller lesions appeared on the anterior aspect of the right foot, ankle, and thigh. Biopsy showed cells strongly positive for CD3 and CD30 and negative for CD56 and the ALK gene product. CT of the chest, abdomen, and pelvis was negative for extracutaneous involvement favoring cutaneous ALCL. Patient was treated with 6 cycles of CHOP (cyclophosphamide, hydroxydaunorubicin, vincrist... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483711 Thu, 08 Dec 2011 14:34:42 +0100 5483711 http://www.medworm.com/index.php?rid=5483710&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnume%2F2011%2F398324%2F Ethnicities within Black populations have not been distinguished in most nutrition studies. We sought to examine dietary differences between African Americans (AA) and Haitian Americans (HA) with and without type 2 diabetes using the Healthy Eating Index, 2005 (HEI-05), and the Alternate Healthy Eating Index (AHEI). The design was cross-sectional N=471 (225 AA, 246 HA) and recruitment was by community outreach. The eating indices were calculated from data collected with the Harvard food-frequency questionnaire. African Americans had lower HEI-05 scores β=−10.9 (−8.67, 13.1); SE=1.12, P<.001 than HA. Haitian American females and AA males had higher AHEI than AA females and HA males, respectively, (P=.006) adjusting for age and education. Participants with diabete... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483710 Thu, 08 Dec 2011 14:34:42 +0100 5483710 http://www.medworm.com/index.php?rid=5483709&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Furology%2F2011%2F570790%2F Conclusion. We believe this simplified technique allows a safer excision of nonfunctioning upper pole renal tissue by avoiding the initial dissection of the renal hilum, which associated with the known advantages of a laparoscopic approach makes us consider it the procedure of choice for upper pole nephrectomy in children. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483709 Thu, 08 Dec 2011 14:34:42 +0100 5483709 http://www.medworm.com/index.php?rid=5483708&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnt%2F2011%2F702130%2F An enormous enhancement in the photo-to-current conversion efficiency over the nanocomposite material composed by BiVO4 on the surface of MWCNTs, with respect to electrode of pure BiVO4, was observed. The heterojunction formed between MWCNTs and nano-BiVO4 is beneficial for the separation of photogenerated electrons and holes, resulting in more electrons that are able to transport efficiently to the surface and therefore enhance the photoefficiency. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483708 Thu, 08 Dec 2011 14:34:42 +0100 5483708 http://www.medworm.com/index.php?rid=5483707&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnm%2F2011%2F935320%2F Carbon nanofibers (CNFs) were soaked in 1.5 simulated body fluid (1.5 SBF) in which inorganic ion concentrations are 1.5 times as high as those in the standard SBF. The influence of the CNFs content in 1.5 SBF and pretreatment of the CNFs on the biomimetical deposition of apatite were investigated. The spherical bone-like apatite particles were deposited on the pristine CNFs soaked in 1.5 SBF. Amount of deposited apatite per a unit of CNFs increased with a decrease in the CNFs content in 1.5 SBF, and it decreased markedly when the CNFs were pretreated with concentrated sulfuric acid/nitric acid (3 : 1 v/v) mixture for longer periods. Such results suggest that too many nucleation sites of apatite, which were functional groups, such as carboxyl and h... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483707 Thu, 08 Dec 2011 14:34:42 +0100 5483707 http://www.medworm.com/index.php?rid=5483706&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fstni%2F2011%2F252903%2F As a rule materials of small atomic weight (light and heavy water, graphite, and so on) are used as neutron moderators and reflectors. A new very heavy atomic weight moderator is proposed—radiogenic lead consisting mainly of isotope 208Pb. It is characterized by extremely low neutron radiative capture cross-section (0.23 mbarn for thermal neutrons, i.e., less than that for graphite and deuterium) and highest albedo of thermal neutrons. It is evaluated that the use of radiogenic lead makes it possible to slow down the chain fission reaction on prompt neutrons in a fast reactor. This can increase safety of the fast reactors and reduce as well requirements pertaining to the fuel fabrication technology. Radiogenic lead with high 208Pb content as a liquid-metal coolant of fast reac... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483706 Thu, 08 Dec 2011 14:34:42 +0100 5483706 http://www.medworm.com/index.php?rid=5483705&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcrim%2F2011%2F824634%2F Congenital double lip is a rare developmental anomaly which usually involves the upper lip. It may occur in isolation or as a part of Ascher's syndrome. The occurrence of double lip may result in facial deformity especially when patient attempts to talk, smile, or even try to show the teeth. It affects esthetics and also interferes with speech and mastication. Although surgery may be undertaken to facilitate speech and mastication, majority of cases are operated for cosmetic reasons. A case of congenital double upper lip which was surgically treated for cosmetic reason is reported. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483705 Thu, 08 Dec 2011 14:34:42 +0100 5483705 http://www.medworm.com/index.php?rid=5483704&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fana%2F2011%2F270903%2F This paper contributes a very general class of two-point iterative methods without memory for solving nonlinear equations. The class of methods is developed using weight function approach. Per iteration, each method of the class includes two evaluations of the function and one of its first-order derivative. The analytical study of the main theorem is presented in detail to show the fourth order of convergence. Furthermore, it is discussed that many of the existing fourth-order methods without memory are members from this developed class. Finally, numerical examples are taken into account to manifest the accuracy of the derived methods. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483704 Thu, 08 Dec 2011 14:34:42 +0100 5483704 http://www.medworm.com/index.php?rid=5483703&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fpsi%2F2011%2F870902%2F Conclusions. In developing countries, aesthetic procedures constitute very small part of plastic surgery interventions and plastic surgery units are primarily required for reconstructive needs for optimum management of patients. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483703 Thu, 08 Dec 2011 14:34:42 +0100 5483703 http://www.medworm.com/index.php?rid=5483702&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fidog%2F2011%2F216217%2F Conclusion. Vitamin D and folate deficiencies were strongly associated with BV (Nugent score ≥7) during pregnancy. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483702 Thu, 08 Dec 2011 14:34:42 +0100 5483702 http://www.medworm.com/index.php?rid=5483701&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjb%2F2011%2F368572%2F A total of 140 plants have been reported ethnobotanically from Tehsil Kabal, Swat District. These include the 133 plants (95%) of angiosperms, 3 (2.14%) of gymnosperms, and 2 (1.42%) each of pteridophytes and fungi. The largest family is Lamiaceae represented by 11 species followed by Rosaceae represented by 9 species. Among angiosperms 76 (55.63%) were herbs, 17 (12.78%) were shrubs, and 40 (30.07%) were trees; 127 plants (95.48%) were dicot while 6 plants (4.51%) were monocot. Most of the plants were used for more than one purpose. Generally the plants were used for medicinal, fuel, timber wood, food, and fodder for cattle purposes. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483701 Thu, 08 Dec 2011 14:34:42 +0100 5483701 http://www.medworm.com/index.php?rid=5483700&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijd%2F2011%2F679315%2F Conclusions. Variability exists in powder/liquid ratio for hand dispensed zinc phosphate cement. This variability can affect the DTS of the set material. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5483700 Thu, 08 Dec 2011 14:34:42 +0100 5483700 http://www.medworm.com/index.php?rid=5473884&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Face%2F2011%2F292904%2F A plane, turbulent, nonbuoyant, vertical jet in shallow water is simulated numerically using a three-dimensional computation model employing standard k-ε and renormalized group k-ε turbulent closure schemes. Existing data of mean and turbulent flow quantities, measured using laser Doppler velocimeter, are used to assess the two turbulent closure schemes. Comparisons between the measured and simulated flow field data are made in the free jet region, within the zone of surface impingement, and in the zone of horizontal jets at the surface. The results show that the standard k-ε scheme performs equally well and in some areas better than the more complicated renormalized group k-ε scheme in simulating the mean and turbulent flow quantities in this case. (Source: Jou... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473884 Mon, 05 Dec 2011 14:36:58 +0100 5473884 http://www.medworm.com/index.php?rid=5473883&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fsurgery%2F2011%2F804843%2F We present two cases of (MBC) presenting with ND and emphasise the importance of this clinical sign in suspecting underlying malignancy and an opportunity for early diagnosis. We also discuss the clinical significance of ND in men in relation to current literature. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473883 Mon, 05 Dec 2011 14:36:58 +0100 5473883 http://www.medworm.com/index.php?rid=5473882&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fav%2F2011%2F514681%2F Dengue has become a global public health problem and a sensitive diagnostic test for early phase detection can be life saving. An internally controlled, generic real-time PCR was developed and validated by testing serial dilutions of a DENV positive control RNA in the presence of a fixed amount of IC with results showing a good linearity (R2=0.9967) and a LOD of at least 1.95×104 copies/mL. Application of the generic PCR on 136 patient samples revealed a sensitivity of 95.8% and specificity of 100%. A newly developed multiplex real-time PCR with serotype-specific probes allowed the serotyping of DENV for 80 out of 92 (87%) generic real-time PCR positive patients. Combined these real-time PCRs offer a convenient diagnostic tool for the sensitive and specific quanti... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473882 Mon, 05 Dec 2011 14:36:58 +0100 5473882 http://www.medworm.com/index.php?rid=5473881&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fppar%2F2011%2F436358%2F This study explores the skeletal effects of the peroxisome proliferator activated receptor (PPAR)pan agonist tetradecylthioacetic acid (TTA). Rats, without (Study I) and with ovariectomy (OVX) or sham operation (Study II), were given TTA or vehicle daily for 4 months. Bone markers in plasma, whole body and femoral bone mineral density and content (BMD and BMC), and body composition were examined. Histomorphometric and biomechanical analyses (Study I) and biomechanical and μCT analyses (Study II) of the femur were performed. Normal rats fed TTA had higher femoral BMD and increased total and cortical area in femur compared to controls. The ovariectomized groups had decreased BMD and impaired microarchitecture parameters compared to SHAM. However, the TTA OVX group maintained femoral B... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473881 Mon, 05 Dec 2011 14:36:58 +0100 5473881 http://www.medworm.com/index.php?rid=5473880&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fau%2F2011%2F872057%2F Conclusions. Transurethral collagen denaturation is a low-risk, office-based procedure that results in durable quality-of-life improvements in a significant proportion of women for as long as 3 years. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473880 Mon, 05 Dec 2011 14:36:58 +0100 5473880 http://www.medworm.com/index.php?rid=5473879&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fmse%2F2011%2F469262%2F Cutting operations using blades can arise in a number of industries, for example, food processing industry, in which cheese, fruit and vegetable, even meat, are involved. Certain questions will rise during these works, such as “why pressing-and-slicing cuts use less force than pressing-only cuts” and “how is the influence of the blade cutting-edge on force”. To answer these questions, this research developed a mathematical expression of the cutting stress tensor. Based on the analysis of the stress tensor on the contact surface, the influence of the blade edge-shape and slicing angle on the resultant cutting force were formulated and discussed. These formulations were further verified using experimental results by robotic cutting of potatoes. Through studying th... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473879 Mon, 05 Dec 2011 14:36:58 +0100 5473879 http://www.medworm.com/index.php?rid=5473878&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faop%2F2011%2F656205%2F Anterior shoulder instability is a common problem. The Latarjet procedure has been advocated as an option for the treatment of anteroinferior shoulder instability. The purpose of this paper is to explain our surgical procedure titled “Mini-open Latarjet Procedure.” We detailed patient positioning, skin incision, subscapularis approach, and coracoid fixation. Then, we reviewed the literature to evaluate the clinical outcomes of this procedure. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473878 Mon, 05 Dec 2011 14:36:58 +0100 5473878 http://www.medworm.com/index.php?rid=5473877&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fddns%2F2011%2F284261%2F By considering Melham's sums (Melham, 2004), we compute various more general nonalternating sums, alternating sums, and sums that alternate according to (-1)(n+12) involving the generalized Fibonacci and Lucas numbers. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5473877 Mon, 05 Dec 2011 14:36:58 +0100 5473877 http://www.medworm.com/index.php?rid=5454386&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fnm%2F2011%2F834308%2F We describe a case of suspected “T-cell-mediated” hypereosinophilic syndrome presenting with cerebral watershed infarcts. An extensive search for potential embolic sources was negative, supporting the hypothesis that cerebrovascular endothelial dysfunction could have caused the infarcts. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454386 Tue, 29 Nov 2011 14:13:18 +0100 5454386 http://www.medworm.com/index.php?rid=5454385&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fem%2F2011%2F498545%2F Mycotic aneurysm is a serious clinical condition with significant morbidity and mortality. Staphylococcus aureus and Salmonella species are the most common causative pathogens. Klebsiella pneumoniae was rarely reported as a possible pathogen causing mycotic aneurysm; therefore, we describe a K. pneumoniae-related fatal bacteremia mycotic aneurysm in a patient in spite of appropriate antimicrobial agents and surgical management. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454385 Tue, 29 Nov 2011 14:13:18 +0100 5454385 http://www.medworm.com/index.php?rid=5454384&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijs%2F2011%2F578374%2F High-resolution atomic-beam ultraviolet (UV) laser spectroscopy in Dy I and Er I has been performed. Isotope shifts have been measured for two transitions in Dy I and one transition in Er I. Specific mass shifts and field shifts have been derived for the studied transitions, and large differences between the two 4f106s2–4f106s6p transitions in Dy I have been found. From the derived specific mass shifts and field shifts, configuration mixing at the upper levels of transitions has been discussed. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454384 Tue, 29 Nov 2011 14:13:18 +0100 5454384 http://www.medworm.com/index.php?rid=5454383&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fija%2F2011%2F390409%2F The Colorado potato beetle, Leptinotarsa decemlineata (Say) Order Coleoptera and the potato leafhopper, Empoasca fabae (Harris) Order Homoptera, are the major insect pests of potato in eastern North America. In two years of field trials, we compared the effectiveness of three pest management options for the control of Colorado potato beetle and potato leafhopper: natural host plant resistance (glandular trichomes), engineered resistance (Bacillus thuringiensis [Bt] Berliner cry3A gene) and a susceptible potato cultivar (Superior) with an at-planting application of the insecticide thiamethoxam. Similar and acceptable control of the Colorado potato beetle larvae was obtained with the Bt-cry3A lines and the thiamethoxam treated “Superior” variety. The glandular trichome cultiv... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454383 Tue, 29 Nov 2011 14:13:18 +0100 5454383 http://www.medworm.com/index.php?rid=5454382&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faaa%2F2011%2F791323%2F This paper presents the properties and behaviour of solutions to a class of n-dimensional functional differential systems of neutral type. Sufficient conditions for solutions to be either oscillatory, or limt→∞yi(t) = 0, or limt→∞|yi(t)|=∞, i=1,2,…,n, are established. One example is given. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454382 Tue, 29 Nov 2011 14:13:18 +0100 5454382 http://www.medworm.com/index.php?rid=5454381&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fah%2F2011%2F517561%2F In conclusion, all poor mobilizers were able to obtain adequate stem cells transplant dose and had similar transplant course and long-term outcome to that of the control good mobilizers group. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454381 Tue, 29 Nov 2011 14:13:18 +0100 5454381 http://www.medworm.com/index.php?rid=5454380&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijfr%2F2011%2F752359%2F We examined the effects of low-impact broadcast-burning and disk-trenching planting position (control, hinge, trench) on soil characteristics and lodgepole pine foliar nutrition and growth over two decades at a subboreal site in British Columbia, Canada. Broadcast burning had virtually no effect on either the bulk density or chemical properties of soil. In contrast, significant reductions in soil bulk density and increases in soil nutrient availability persisted for 20 years in hinge position soils relative to undisturbed (control) soil between trenches. These effects on bulk density and nutrient availability are associated with significant differences in pine size by year 6. Burning and planting positions interacted significantly in their effect on pine height, diameter, and stem volume f... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454380 Tue, 29 Nov 2011 14:13:18 +0100 5454380 http://www.medworm.com/index.php?rid=5454379&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fabi%2F2011%2F608295%2F Identification of regulatory molecules in signaling pathways is critical for understanding cellular behavior. Given the complexity of the transcriptional gene network, the relationship between molecular expression and phenotype is difficult to determine using reductionist experimental methods. Computational models provide the means to characterize regulatory mechanisms and predict phenotype in the context of gene networks. Integrating gene expression data with phenotypic data in transcriptional network models enables systematic identification of critical molecules in a biological network. We developed an approach based on fuzzy logic to model cell budding in Saccharomyces cerevisiae using time series expression microarray data of the cell cycle. Cell budding is a phenotype of viable cells ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454379 Tue, 29 Nov 2011 14:13:18 +0100 5454379 http://www.medworm.com/index.php?rid=5454378&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fstni%2F2011%2F948457%2F The author extends the previously proposed combined asymptotic method (CAM) of seismic SSI analysis for the multi-support systems and applies it to the transportation portal as a double-support system (together with the reactor building). The key issue is the development of the structural dynamic stiffness matrix condensed to the supports by the modal approach. Then the condensed structural matrix is combined with the soil dynamic stiffness matrix also condensed to the rigid basements. As a result, a very simple linear system 12∗12 is solved in the frequency domain. This gives the transfer functions from the free-field motion to the motion of the basements. The only important limitations are the linearity of the soil’s and structure’s properties and the rigidity of the b... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454378 Tue, 29 Nov 2011 14:13:18 +0100 5454378 http://www.medworm.com/index.php?rid=5454377&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fgrp%2F2011%2F810939%2F Innate and adaptive immune systems have important role in the pathogenesis of acute and chronic infection with hepatitis B virus (HBV). These immune responses are mediated through complex interactions between the innate immune response and adaptive immune response. Toll-like receptors (TLRs) are a family of innate immune-recognition receptors that recognize the molecular patterns associated with microbial pathogens. So far, TLR1 to 13 were found in human or mice and investigated to detect the target molecules and the downstream mechanisms of these unique systems. Stimulation by their ligands initiates the activation of complex networks of intracellular signaling transduction and innate and adaptive immune-related cells (NK, NK-T, monocytes, dendritic cells, T cells, B cells, and Tregs, etc... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454377 Tue, 29 Nov 2011 14:13:18 +0100 5454377 http://www.medworm.com/index.php?rid=5454376&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijcb%2F2011%2F470597%2F Hypoxia is a signature feature of growing tumors. This cellular state creates an inhospitable condition that impedes the growth and function of all cells within the immediate and surrounding tumor microenvironment. To adapt to hypoxia, cells activate autophagy and undergo a metabolic shift increasing the cellular dependency on anaerobic metabolism. Autophagy upregulation in cancer cells liberates nutrients, decreases the buildup of reactive oxygen species, and aids in the clearance of misfolded proteins. Together, these features impart a survival advantage for cancer cells in the tumor microenvironment. This observation has led to intense research efforts focused on developing autophagy-modulating drugs for cancer patient treatment. However, other cells that infiltrate the tumor environmen... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454376 Tue, 29 Nov 2011 14:13:18 +0100 5454376 http://www.medworm.com/index.php?rid=5454375&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijs%2F2011%2F954252%2F A new fluorescent composite based on CdS quantum dots immobilized on the multidentate biopolymer matrix is prepared through the graft copolymerization of the acrylamide onto kappa-Carrageenan. A variety of techniques like thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR) was used to confirm the structure of the obtained samples. To investigate the spectrofluorometric properties, fluorescence spectroscopy of the obtained quantum dots was studied. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454375 Tue, 29 Nov 2011 14:13:18 +0100 5454375 http://www.medworm.com/index.php?rid=5454374&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fabi%2F2011%2F801478%2F This study has provided the opportunity to expand the range of potential drug targets and to move towards optimal target-based strategies. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5454374 Tue, 29 Nov 2011 14:13:18 +0100 5454374 http://www.medworm.com/index.php?rid=5428556&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjmb%2F2011%2F945734%2F The influence of environmental parameters on the spawning aggregation of Euphausia sibogae was investigated along the southwest coast of India during the peak phase of summer monsoon 2005. The prevailing ecological conditions between the aggregation period (peak phase) and non-aggregation period (early phase) were also compared. The aggregation was observed at station 1 (8∘N; 76.5∘E, 480 ind⋅m-3) and 6 (10∘N; 75.5∘E, 839 ind.m-3) during the peak phase of the summer monsoon. Eggs (14769 eggs m-3) and different developmental stages were observed in higher abundance at station 6. The physicochemical conditions indicated that the aggregation coincided with the upwelling. The nutrient enrichment due to the upwelling triggered phytop... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5428556 Sun, 20 Nov 2011 13:58:01 +0100 5428556 http://www.medworm.com/index.php?rid=5428555&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijn%2F2011%2F464735%2F Vascular access stenosis is a major complication in hemodialysis patients. We prospectively observed 50 patients in whom 50 nitinol shape-memory alloy-recoverable technology (SMART) stents were used as salvage therapy for recurrent peripheral venous stenosis. Twenty-five stents each were deployed in native arteriovenous fistula (AVF) and synthetic arteriovenous polyurethane graft (AVG) cases. Vascular access patency rates were calculated by Kaplan-Meier analysis. The primary patency rates in AVF versus AVG at 3, 6, and 12 months were 80.3% versus 75.6%, 64.9% versus 28.3%, and 32.3% versus 18.9%, respectively. The secondary patency rates in AVF versus AVG at 3, 6, and 12 months were 88.5% versus 75.5%, 82.6% versus 61.8%, and 74.4% versus 61.8%, respectively. Although there were no statist... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5428555 Sun, 20 Nov 2011 13:58:01 +0100 5428555 http://www.medworm.com/index.php?rid=5428554&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Faaa%2F2011%2F545314%2F A systemic study of some families of the modified q-Bernoulli numbers and polynomials with weight α is presented by using the p-adic q-integration ℤp. The study of these numbers and polynomials yields an interesting q-analogue related to Bernoulli numbers and polynomials. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5428554 Sun, 20 Nov 2011 13:58:01 +0100 5428554 http://www.medworm.com/index.php?rid=5428553&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fecam%2F2012%2F684740%2F Leea indica is a medicinal plant traditionally used to treat cancer. Through bioassay-guided approach, we isolated mollic acid arabinoside (MAA), for the first time from Leea indica. Here, we present the apoptosis-inducing effect of MAA on Ca Ski cervical cancer cells. Based on DAPI staining, MAA-treated cells manifested nuclear shrinkage, condensation, and fragmentation. We further confirmed the fragmentation of DNA using TUNEL assay. During early apoptosis, MAA caused the perturbation of plasma membrane through externalization of PS, followed by the formation of apoptotic blebs. Prior to these events, MAA triggered rapid dissipation of the mitochondrial membrane potential. In the upstream, MAA increased the expression of Bax, decreased the expression of Bcl-2, and augmented the Bax/Bcl-2... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5428553 Sun, 20 Nov 2011 13:58:01 +0100 5428553 http://www.medworm.com/index.php?rid=5428552&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fobgyn%2F2011%2F206418%2F Uterine torsion during pregnancy is only sporadically reported in the literature. Here we present a case of leiomyoma causing uterine torsion in pregnancy and review the literature on etiology, diagnosis, and management. A 25-years-old primigravida with leiomyoma complicating pregnancy was admitted in our hospital with abdominal pain and uterine tenderness. She underwent emergency LSCS (lower segment cesarean section) for fetal bradycardia. Intraoperatively, the uterus was rotated 180 degrees left to right. Inadvertent incision on the posterior wall was avoided by proper delineation of anatomy. Torsion was corrected by exteriorization of leiomyoma and uterus, and lower segment cesarean was carried out safely. Prompt recognition and management of this condition is necessary for better mate... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5428552 Sun, 20 Nov 2011 13:58:01 +0100 5428552 http://www.medworm.com/index.php?rid=5428551&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjpr%2F2011%2F636857%2F To compare the efficacy and safety of mebendazole and secnidazole in the treatment of giardiasis in adult patients, a single-centre, parallel group, open-label, randomized non-inferiority trial was carried out. One-hundred and 26 participants who had symptomatic Giardia mono-infection took part in the study. Direct wet mount and/or Ritchie concentration techniques and physical examinations were conducted at the time of enrolment and at the follow-up visit. The primary outcome measure was parasitological cure, performed at 3, 5, 10 days post-treatment. Negative faecal specimens for Giardia were ensured by the same parasitological techniques. At follow up (day 10) the parasitological cure rate for the per protocol populations was 88.7% (55/62) for MBZ and 91.8% (56/61) for SNZ. For t... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5428551 Sun, 20 Nov 2011 13:58:01 +0100 5428551 http://www.medworm.com/index.php?rid=5404881&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fusr%2F2011%2F687834%2F Our study examines a nontraditional engagement process employed by the City of Seattle during neighborhood plan updates. Adapting the trusted advocates model from the public health field, the city hired planning outreach liaisons (POLs) from 13 diverse community groups to solicit input from traditionally underrepresented residents. To explore the efficacy of this approach, we collected data through interviews with residents, neighborhood leaders, community development firm employees, university researchers, and municipal staff; a review of planning documents; observation at planning meetings. We found that the POLs effectively engaged underrepresented groups—including more than 1,200 stakeholders—particularly those characterized as self-organized, centralized or having strong s... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404881 Mon, 14 Nov 2011 12:50:58 +0100 5404881 http://www.medworm.com/index.php?rid=5404880&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fecam%2F2012%2F857804%2F Randomised controlled trials (RCTs) of acupuncture often find equivalent responses to real and placebo acupuncture despite both appearing superior to no treatment. This raises questions regarding the mechanisms of acupuncture, especially the contribution of patient expectancies. We systematically reviewed previous research assessing the relationship between expectancy and treatment responses following acupuncture, whether real or placebo. To be included, studies needed to assess and/or manipulate expectancies about acupuncture and relate these to at least one health-relevant outcome. Nine such independent studies were identified through systematic searches of Medline, PsycInfo, PubMed, and Cochrane Clinical Trials Register. The methodology and reporting of these studies were quite heteroge... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404880 Mon, 14 Nov 2011 12:50:58 +0100 5404880 http://www.medworm.com/index.php?rid=5404879&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fad%2F2011%2F741267%2F The objective of this study was to prospectively assess the association between deployment in support of the operations in Iraq and Afghanistan and newly reported lupus and rheumatoid arthritis while also considering the effects of demographic, behavioral, and occupational characteristics. A total of 77,047 (2001–2003) and 31,110 (2004–2006) participants completed the baseline Millennium Cohort questionnaire and were resurveyed approximately every 3 years. Longitudinal analyses were used to assess the adjusted association between deployment to Iraq and Afghanistan with and without combat exposures and newly reported disease. After adjusting, deployment was not significantly associated with newly reported lupus compared with nondeployers. However, compared with nondeployers, dep... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404879 Mon, 14 Nov 2011 12:50:58 +0100 5404879 http://www.medworm.com/index.php?rid=5404878&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fppar%2F2011%2F164925%2F In conclusion, HNF4α regulates cholesterol metabolism in rat by modulating the expression of SR-BI in the liver, in which the upregulation of PPARγ was involved. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404878 Mon, 14 Nov 2011 12:50:58 +0100 5404878 http://www.medworm.com/index.php?rid=5404877&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijp%2F2011%2F518153%2F The potential of Fe(II)-orthophenatrolin, as doped with synthetic zeolite Y nanocluster (Na-Y) via complexation process, after wet impregnation of parent zeolite with FeSO4 aqueous solution, was studied as a photocatalyst in decolorization of Methyl Green (MG) under UV irradiation. The characterization of the synthesized zeolite nanocluster and the prepared catalyst was studied using X-ray powder diffraction (XRD), infrared spectroscopy (FT-IR), thermal analysis, and SEM methods. The dye photodecolorization process was studied considering the influence of experimental parameters and it was observed that photoreactivity of the photocatalyst was varied with catalyst amount, initial dye concentration, pH of dye solution, temperature, and the presence of KBrO3. The optimal experimental paramet... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404877 Mon, 14 Nov 2011 12:50:58 +0100 5404877 http://www.medworm.com/index.php?rid=5404876&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Frheumatology%2F2011%2F242681%2F We describe three additional adult cases of Sweet's associated with SLE and provide a focused review on nondrug-induced, nonneonatal SLE and Sweet's. In two of three new cases, as in the majority of prior cases, the skin rash of Sweet's paralleled underlying SLE disease activity. The pathogenesis of Sweet's remains elusive, but evidence suggests that cytokine dysregulation may be central to the clinical and pathological changes in this condition, as well as in SLE. Further research is needed to define the exact relationship between the two conditions. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404876 Mon, 14 Nov 2011 12:50:58 +0100 5404876 http://www.medworm.com/index.php?rid=5404875&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjnm%2F2011%2F275157%2F This work put forward a facile method for obtaining assembly of aluminum (Al) nanosheets on an Al substrate by hydrothermal process. The results revealed that the ammonia was crucial for forming the assembly of Al nanosheets. In addition, the morphology and microstructure of the as-prepared Al nanosheets were strongly dependent on the hydrothermal temperature. Further, the influence of surfactant on the morphology of Al nanostructures was discussed that the nanosheets could be obtained under CMC of Span-80. A mechanism for forming the assembly of Al nanostructures was proposed that the erosion process based on the vacancies and defects of Al film determined the morphologies of Al nanosheets according to the experimental results. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5404875 Mon, 14 Nov 2011 12:50:58 +0100 5404875 http://www.medworm.com/index.php?rid=5321789&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbb%2F2011%2F767930%2F Diabetes mellitus is associated with decreased NO bioavailability in the myocardium. Ginsenoside Rb1 has been shown to confer cardioprotection against ischemia reperfusion injury. The aim of this study was to investigate whether Ginsenoside Rb1 exerts cardioprotective effects during myocardial ischemia-reperfusion in diabetic rats and whether this effect is related to increase the production of NO via enhancing eNOS expression in the myocardium. The myocardial I/R injury were induced by occluding the left anterior descending artery for 30 min followed by 120 min reperfusion. An eNOS inhibitor L-NAME or Rb1 were respectively administered 25 min or 10 min before inducing ischemia. Ginsenoside Rb1 preconditioning reduced myocardial infarct size when compared with I... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5321789 Sun, 16 Oct 2011 16:24:29 +0100 5321789 http://www.medworm.com/index.php?rid=5311243&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijmb%2F2011%2F594369%2F The presence of Lactococcus bacteriophages in milk can partly or completely inhibit milk fermentation. To prevent the problems associated with the bacteriophages, the real-time PCR was developed in this study for direct detection from whey and milk of three main groups of Lactococcus bacteriophages, c2, 936, and P335. The optimization of DNA extraction protocol from complex matrices such as whey and milk was optimized allowed the amplification of PCR without any matrix and nontarget contaminant interference. The real-time PCR program was specific and with the detection limit of 102 PFU/mL. The curve slopes were −3.49, −3.69, and −3.45 with the amplification efficiency estimated at 94%, 94%, and 98% and the correlation coefficient (R2) of 0.999, 0.999, and 0.998 for c2,... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311243 Thu, 13 Oct 2011 15:14:21 +0100 5311243 http://www.medworm.com/index.php?rid=5311242&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fapec%2F2011%2F546986%2F The present paper evaluates the static and motional feedthrough capacitance of a silicon carbide-based flexural-mode microelectromechanical system resonator. The static feedthrough capacitance was measured by a network analyzer under atmospheric pressure. The motional feedthrough was obtained by introducing various values into the modeling circuit in order to fit the Bode plots measured under reduced pressure. The static feedthrough capacitance was 0.02 pF, whereas the motional feedthrough capacitance of an identical device was about 0.2 pF, which is one order of magnitude larger than the static feedthrough capacitance. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311242 Thu, 13 Oct 2011 15:14:21 +0100 5311242 http://www.medworm.com/index.php?rid=5311241&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjammc%2F2011%2F464102%2F In this study, a method for the determination of low concentrations of lead in beer samples using solid-phase extraction with a flow injection analysis system and detection by flame atomic absorption spectrometry (FAAS) was developed. Moringa oleifera seeds were used as a biosorbent material. Chemical and flow variables of the online preconcentration system, such as sample pH, preconcentration flow rate, eluent flow rate, eluent concentration, particle size, and sorbent mass, were studied. The optimum extraction conditions were obtained using a sample pH of 6.0, sample flow rate of 6.0 mL min−1, 63.0 mg of sorbent mass, and 2.0 mol L−1 HNO3 at a flow rate of 2.0 mL min−1 as the eluent. With the optimized conditions, the ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311241 Thu, 13 Oct 2011 15:14:21 +0100 5311241 http://www.medworm.com/index.php?rid=5311240&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjam%2F2011%2F754350%2F Some new Gronwall-Bellman-type delay integral inequalities in two independent variables on time scales are established, which provide a handy tool in the research of qualitative and quantitative properties of solutions of delay dynamic equations on time scales. The established inequalities generalize some of the results in the work of Zhang and Meng 2008, Pachpatte 2002, and Ma 2010. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311240 Thu, 13 Oct 2011 15:14:21 +0100 5311240 http://www.medworm.com/index.php?rid=5311239&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijcb%2F2011%2F713435%2F Phosphorylation of phosphatidylinositol (PtdIns) by a PtdIns 3-kinase is an essential process in autophagy. Atg14, a specific subunit of one of the PtdIns 3-kinase complexes, targets the complex to the probable site of autophagosome formation, thereby, sorting the complex to function specifically in autophagy. The N-terminal half of Atg14, containing coiled-coil domains, is required to form the PtdIns 3-kinase complex and target it to the proper site. The C-terminal half of yeast Atg14 is suggested to be involved in the formation of a normal-sized autophagosome. The C-terminal half of mammalian Atg14 contains the Barkor/Atg14(L) autophagosome-targeting sequence (BATS) domain that preferentially binds to the highly curved membranes containing PtdIns(3)P and is proposed to target the PtdIns ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311239 Thu, 13 Oct 2011 15:14:21 +0100 5311239 http://www.medworm.com/index.php?rid=5311238&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijelc%2F2011%2F434186%2F A flow directed assembly of graphite oxide solution was used in the formation of free-standing graphene oxide paper of approximate thickness of 100 μm. The GO papers were characterised by XRD and SEM. Electrochemical characterization of the GO paper membrane electrode assembly revealed proton conductivities of 4.1 × 10−2 S cm−1 to 8.2 × 10−2 S cm−1 at temperatures of 25–90°C. A direct methanol fuel cell, at 60°C, gave a peak power density of 8 mW cm−2 at a current density of 35 mA cm−2. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311238 Thu, 13 Oct 2011 15:14:21 +0100 5311238 http://www.medworm.com/index.php?rid=5311237&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fcardiology%2F2011%2F792938%2F We describe the case of a 64-year-old male initially presenting with presyncope and bradycardia, without any anginal symptoms or objective evidence of myocardial ischemia. A stress test induced no physical symptoms but revealed a left bundle branch block with multiple preventricular contractions on electrocardiogram. Subsequent catheterization revealed severe obstructive disease throughout the coronary arteries. He was treated percutaneously on two separate heart catheterizations. The presyncope and bradycardia resolved after reperfusion of the posterior descending artery. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311237 Thu, 13 Oct 2011 15:14:21 +0100 5311237 http://www.medworm.com/index.php?rid=5311236&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fcrim%2Fobgyn%2F2011%2F350318%2F A 35-year-old woman presented to the emergency room for the evaluation of failed surgical and medical management of a suspected ectopic pregnancy. When imaging studies were performed, she had lymphadenopathy and diffuse sclerosis of the osseous framework. Multiple biopsies were performed and revealed poorly differentiated metastatic carcinoma with signet ring features. Esophagogastroduodenoscopy confirmed the findings of a Stage IV gastric adenocarcinoma. Signs and symptoms of gastric carcinoma are vague. However, to our knowledge, an elevation in human chorionic gonadotropin (hCG) is not an associated finding. Persistence of hCG has many causes from abnormal pregnancy to menopause and other forms of cancer. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311236 Thu, 13 Oct 2011 15:14:21 +0100 5311236 http://www.medworm.com/index.php?rid=5311235&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcdr%2F2011%2F167146%2F This study tested the degree to which a need-supportive family environment influences adolescents' endorsement of the value priorities that their mothers wish for them. Mothers and their adolescents (N=280) rated the importance of three intrinsic values (personal growth, close relationships, and community contribution) and three extrinsic values (wealth, fame, and attractiveness). Results revealed that mothers placed greater emphasis on intrinsic over extrinsic values than did adolescents. Furthermore, the congruence of mothers' and adolescents' emphasis on intrinsic values was moderated by the extent to which adolescents experienced satisfaction of their basic needs for autonomy, relatedness, and competence at home. Finally, the well-being of both adolescents and mothers was a... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5311235 Thu, 13 Oct 2011 15:14:21 +0100 5311235 http://www.medworm.com/index.php?rid=5281918&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fddns%2F2011%2F534165%2F The homotopy perturbation method is employed to obtain approximate analytical solutions of the wave-like nonlinear equations with initial-boundary conditions. An efficient way of choosing the auxiliary operator is presented. The results demonstrate reliability and efficiency of the method. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5281918 Tue, 04 Oct 2011 14:54:28 +0100 5281918 http://www.medworm.com/index.php?rid=5281917&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcri%2F2011%2F929876%2F Described is a simple, rapid, selective, and stability-indicating RP-LC method for the determination of process and degradation-related impurities of bosentan monohydrate. Chromatographic separation was achieved on Zorbax SB-Phenyl column thermostated at 35°C under gradient elution by a binary mixture of solvent A (60% phosphate buffer, pH 2.5, and 40% methanol) and solvent B (acetonitrile) at a flow rate of 1.0 mL/min. Forced degradation was carried out under acidic, alkaline, oxidative, photolytic, and thermal conditions. Significant degradation is observed in acid and alkali stress conditions. Process- and degradation-related impurities were characterized by mass spectrometry, 1H NMR, and FT-IR spectral data. Validation of the developed method was carried out as pe... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5281917 Tue, 04 Oct 2011 14:54:28 +0100 5281917 http://www.medworm.com/index.php?rid=5281916&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fat%2F2011%2F105258%2F TiC-TiB2-based cermets with Ni binder were fabricated using combustion synthesis assisted by pseudohot isostatic pressing by heating the compacted powder mixture to approximately 700°C. The effects of composition on microstructure and hardness of the synthesized samples were investigated. The samples exhibited finer microstructure and higher hardness as TiC/TiB2 volume ratio increased and as Ni increased up to 30 vol%. A relatively high hardness value of 1950 HV was obtained for TiC-TiB2-Ni(52.5/17.5/30 vol%). However, the transverse rupture strength and the modulus of elasticity values were not very high. This may be due to weak bonding strength of the interface between hard phases and Ni binder and/or insufficient densification of the samples. (Source: Journa... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5281916 Tue, 04 Oct 2011 14:54:28 +0100 5281916 http://www.medworm.com/index.php?rid=5257584&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjcnc%2F2011%2F610645%2F Steady improvements in technologies that measure human emotional response offer new possibilities for making computer games more immersive. This paper reviews the history of designs a particular branch of affective technologies that acquire electrodermal response readings from human subjects. Electrodermal response meters have gone through continual improvements to better measure these nervous responses, but still fall short of the capabilities of today's technology. Electrodermal response traditionally have been labor intensive. Protocols and transcription of subject responses were recorded on separate documents, forcing constant shifts of attention between scripts, electrodermal measuring devices and of observations and subject responses. These problems can be resolved by collecting more... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5257584 Tue, 27 Sep 2011 08:31:23 +0100 5257584 http://www.medworm.com/index.php?rid=5156148&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fmi%2F2011%2F237638%2F Conclusions. SAA is increased in complicated PPE, and it might be useful as a biomarker for UPE and CPE diagnosis. SAA levels did not demonstrate considerable diagnostic performance in identifying patients who develop pleural thickening/loculations after a PPE. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5156148 Thu, 25 Aug 2011 09:31:51 +0100 5156148 http://www.medworm.com/index.php?rid=5156147&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fisrn%2Foncology%2F2011%2F643890%2F Purpose. To evaluate the correlation between MRI and histopathological findings in patients with mammographically detected 3–5 BI-RAD (Breast Imaging Reporting And Data Systems) microcalcifications and to allow a better surgical planning. Materials and Method. 62 female Patients (age 50±12) with screening detected 3–5 BI-RAD microcalcifications underwent dynamic 3 T contrast-enhanced breast MRI. After 30-day (range 24–36 days) period, 55 Patients underwent biopsy using stereotactic vacuum-assisted biopsy (VAB), 5 Patients underwent stereotactic mammographically guided biopsy, and 2 Patients underwent MRI-guided VAB. Results. Microhistology examination demonstrated 36 malignant lesions and 26 benign lesions. The analysis of MRI findings identified 8 cases of MRI BI... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5156147 Thu, 25 Aug 2011 09:31:51 +0100 5156147 http://www.medworm.com/index.php?rid=5156146&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcrim%2F2011%2F680401%2F A 14-year-old was girl admitted to our hospital with a subcutaneous mass of the occipital head. The mass had grown for 6 years, after she had sustained a head injury at the age of 6, and was located directly under a previous wound. Skull X-ray Photograph (xp), computed tomography (CT), and magnetic resonance imaging (MRI) showed a bony defect and cystic changes in the skull corresponding to a subcutaneous mass. Bone scintigraphy revealed partial accumulation. The patient underwent total removal of the skull mass, and the diagnosis from the pathological findings of the cyst wall was fibrous dysplasia (FD). The radiographic findings for cystic cranial FD can be various. Progressive skull disease has been reported to be associated with head trauma, but the relationship between cranial FD and ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5156146 Thu, 25 Aug 2011 09:31:51 +0100 5156146 http://www.medworm.com/index.php?rid=5156145&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fcrim%2F2011%2F903839%2F The saphenous vein remains the most commonly used conduit in coronary artery bypass surgery. Vein harvest is a critical component with significant morbidity associated with leg wounds from open technique. Occurring complications are hematoma, postoperative pain, skin changes, neuropathy, and septic or nonseptic wound complications. Within the context of a recent case, we present our approach to postsaphenectomy wound management. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5156145 Thu, 25 Aug 2011 09:31:51 +0100 5156145 http://www.medworm.com/index.php?rid=5156144&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fisrn%2Foncology%2F2011%2F959247%2F Conclusions. Recommendations for future RCTs are provided, and particular attention to the quality of trial design and reporting is highlighted. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=5156144 Thu, 25 Aug 2011 09:31:51 +0100 5156144 http://www.medworm.com/index.php?rid=4983785&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fddns%2F2011%2F946913%2F We analyze substitution tiling spaces with fivefold symmetry. In the substitution process, the introduction of randomness can be done by means of two methods which may be combined: composition of inflation rules for a given prototile set and tile rearrangements. The configurational entropy of the random substitution process is computed in the case of prototile subdivision followed by tile rearrangement. When aperiodic tilings are studied from the point of view of dynamical systems, rather than treating a single one, a collection of them is considered. Tiling spaces are defined for deterministic substitutions, which can be seen as the set of tilings that locally look like translates of a given tiling. Čech cohomology groups are the simplest topological invariants of such spaces. The c... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4983785 Thu, 30 Jun 2011 14:14:43 +0100 4983785 http://www.medworm.com/index.php?rid=4983784&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijdsn%2F2011%2F671814%2F As many Wireless Sensor Networks (WSNs) applications require sensor position information, localization has been an important problem in WSNs. To reduce the number of seeds, a number of mobile-assisted approaches have been proposed. Current proposed mobile-assisted approaches for localization require special hardware or face route selection problem, however. In this paper, we propose a Mobile-Assisted Monte Carlo Localization (MA-MCL) for WSNs. Our approach relies on direct arriver and leaver information from a single mobile-assisted seed. It does not require any specially designed hardware due to the range-free technique, and the single mobile-assisted seed in our approach can move uncontrollably to avoid route selection problem based on Monte Carlo method. Evaluation results show that the... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4983784 Thu, 30 Jun 2011 14:14:43 +0100 4983784 http://www.medworm.com/index.php?rid=4983783&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijcgt%2F2011%2F570210%2F Computer gaming habits have a tendency to evolve with technology, the best being ones that immerse both our imagination and intellect. Here, we describe a new game platform, an Augmented Reality Rubik's cube. The cube acts simultaneously as both the controller and the game board. Gameplay is controlled by the cube, and game assets are rendered on top of it. Shuffling and tilting operations on the cube are mapped to game interaction. We discuss the game design decisions involved in developing a game for this platform, as well as the technological challenges in implementing it. Ultimately, we describe two games and discuss the conclusions of an informal user study based on those games. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4983783 Thu, 30 Jun 2011 14:14:43 +0100 4983783 http://www.medworm.com/index.php?rid=4983782&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fecon%2F2011%2F575192%2F US wheat varieties are examined for differential disease resistance between public and private varieties, an issue for critics of plant intellectual property. Analysis using disease resistance rankings of wheat varieties from Kansas and Texas indicate that private varieties are as or more resistant. This finding was further confirmed with two years of Texas data. Thus, the results from the study reject the criticism of private breeding activities that they are more susceptible to disease compared to public varieties. However, private varieties resistance is incorporated from public offerings so that productive private wheat breeding is partly derivative. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4983782 Thu, 30 Jun 2011 14:14:43 +0100 4983782 http://www.medworm.com/index.php?rid=4983781&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fart%2F2011%2F912650%2F Despite the usefulness of VCT service as an entry point to prevention for the HIV-uninfected people and care, treatment and support for those who test HIV positive, VCT service remains poorly utilized among the fishing communities. The aim of the study was to identify factors influencing VCT service delivery and utilisation among fishing communities in Uganda and consequently, formulated a strategic framework for improving VCT service delivery and utilisation in the fishing communities. The study followed a 3-phased approach, collecting and analyzing quantitative data from Kasenyi fishing community under phase I, collecting and analyzing qualitative data from hospital managers and VCT counselors in phases II and III, respectively. Results indicate that VCT services delivery and utilisation... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4983781 Thu, 30 Jun 2011 14:14:43 +0100 4983781 http://www.medworm.com/index.php?rid=4983780&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fisrn%2Fotolaryngology%2F2011%2F943586%2F Conclusion. Older male patients with higher AHI values were noted to be more adherent to CPAP. Efforts should be made to try to minimize the length of time between the initial visit and the time to receive CPAP to improve compliance. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4983780 Thu, 30 Jun 2011 14:14:43 +0100 4983780 http://www.medworm.com/index.php?rid=4669692&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fisrn%2Fendocrinology%2F2011%2F249421%2F After the age of 40, the amount of growth hormone in humans decreases. The reduced activity of the GH-IGF axis may play a role in age-related cognitive impairments. In the present study, mood and cognition of 30 healthy subjects (7 males, 23 females, aged 41–76 yr, mean age 60.9±9.0) were examined twice. At baseline, we determined fasting blood levels of GH and IGF-I. Mood and cognitive status were assessed at baseline and after, on the average, 3 years and 9 months of followup. Working memory performance decreased over the years in the low IGF-group (P=.007), but not the high IGF-I group. Higher levels of GH were related with a better working memory at the second test (r=0.42, P=.01) while higher levels of IGF-I tended to be related with a better working memory (r=0.3, P=.06)... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4669692 Sun, 03 Apr 2011 14:34:42 +0100 4669692 http://www.medworm.com/index.php?rid=4669691&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fijs%2F2011%2F281931%2F NO2 can be transformed into nitrite by the absorption of Rhodamine B solution, which will make fluorescence quenching of Rhodamine B in acidic medium. According to this mechanism, a new method for detecting nitrogen oxides in the air is developed by a fluorescence spectrophotometry. The influence of environmental media and interfering substances in the fluorescence intensity of system was studied. Under the optimal experimental conditions, the decrease of fluorescence intensity varies linearly with the concentration of NO2  − over the range of 0.009~0.500 μg/ml with a correlation coefficient of 0.9992. The method is simple and has a lower limit of detection than the common methods. It can be a referee for the environmental evaluation. (Source: Journal of ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4669691 Sun, 03 Apr 2011 14:34:42 +0100 4669691 http://www.medworm.com/index.php?rid=4669690&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fmpe%2F2011%2F724927%2F We study higher-order boundary value problems (HOBVP) for higher-order nonlinear differential equation. We make comparison among differential transformation method (DTM), Adomian decomposition method (ADM), and exact solutions. We provide several examples in order to compare our results. We extend and prove a theorem for nonlinear differential equations by using the DTM. The numerical examples show that the DTM is a good method compared to the ADM since it is effective, uses less time in computation, easy to implement and achieve high accuracy. In addition, DTM has many advantages compared to ADM since the calculation of Adomian polynomial is tedious. From the numerical results, DTM is suitable to apply for nonlinear problems. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4669690 Sun, 03 Apr 2011 14:34:42 +0100 4669690 http://www.medworm.com/index.php?rid=4669689&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fart%2F2011%2F729854%2F We report an unusual case of KSHV-associated lymphoma in an HIV-infected patient manifesting with myocardial and central nervous system involvement. We discuss this case in the context of increasing array of KSHV-associated lymphomas. In the HIV-infected patient with a mass lesion, a history of cutaneous Kaposi's sarcoma and prolonged immunosuppression should alert clinicians as to the possibility of KSHV-associated lymphoproliferative disorders, in order to establish a timely diagnosis. (Source: Journal of Biophysics) Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4669689 Sun, 03 Apr 2011 14:34:42 +0100 4669689 http://www.medworm.com/index.php?rid=4669688&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fdrt%2F2011%2F906462%2F The complex relationship between the use of antidepressants and suicidal behaviour is one of the hottest topics of our contemporary psychiatry. Based on the literature, this paper summarizes the author's view on antidepressant-resistant depression and antidepressant-associated suicidal behaviour. Antidepressant-resistance, antidepressant-induced worsening of depression, antidepressant-associated (hypo)manic switches, mixed depressive episode, and antidepressant-associated suicidality among depressed patients are relatively most frequent in bipolar/bipolar spectrum depression and in children and adolescents. As early age at onset of major depressive episode and mixed depression are powerful clinical markers of bipolarity and the manic component of bipolar disorder (and possible its biol... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4669688 Sun, 03 Apr 2011 14:34:42 +0100 4669688 http://www.medworm.com/index.php?rid=4488941&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2010%2F179641.html Ampullosporin A is an antimicrobial, neuroleptic peptaibol, the behavior of which was investigated in different membrane mimetic environments made of egg yolk L-α-phosphatidylcholine. In monolayers, the peptaibol adopted a mixed α/310-helical structure with an in-plane orientation. The binding step was followed by the peptide insertion into the lipid monolayer core. The relevance of the inner lipid leaflet nature was studied by comparing ampullosporin binding on a hybrid bilayer, in which this leaflet was a rigid alkane layer, and on supported fluid lipid bilayers. The membrane binding was examined by surface plasmon resonance spectroscopy and the effect on lipid dynamics was explored using fluorescence recovery after photobleaching. In the absence of voltage and at low concent... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=4488941 Fri, 18 Feb 2011 01:28:16 +0100 4488941 http://www.medworm.com/index.php?rid=3443320&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2010%2F253763.html We present a numerical spectroscopic study of visible and infrared laser radiation in a biological tissue. We derive a solution of a general two-dimensional time dependent radiative transfer equation in a tissue-like medium. The used model is suitable for many situations especially when the external source is time-dependent or continuous. We use a control volume-discrete ordinate method associated with an implicit three-level second-order time differencing scheme. We consider a very thin rectangular biological-tissue-like medium submitted to a visible or a near infrared light sources. The RTE is solved for a set of different wavelength source. All sources are assumed to be monochromatic and collimated. The energetic fluence rate is computed at a set of detector points on the boundaries. Ac... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=3443320 Wed, 07 Apr 2010 16:00:13 +0100 3443320 http://www.medworm.com/index.php?rid=3254011&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2009%2F819635.html Differential scanning calorimetry (DSC) has been used to estimate the effect of disc disease on the collagen helix-coil transition and morphology for tissue extracted from patients during surgical operation. Forty discs were obtained from patients with degenerative disc disease undergoing surgery for low back pain. The patients were in the age between 20 and 70 years old. The specimens were kept wet during DSC experiment. The data allow the comparison between thermal stability of collagen tissue from healthy patients and from patients suffering from disc disease. In the paper the comparison between thermal helix-coil transition for collagen fibers from patients suffering from disc disease and collagen fibers from healthy organisms has been discussed. The heating rate has an influence on th... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=3254011 Tue, 09 Feb 2010 16:34:54 +0100 3254011 http://www.medworm.com/index.php?rid=3239124&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2009%2F210485.html A number of proteins with intrinsically disordered (ID) regions/domains are reported to be found disproportionately higher in transcription factors. Available evidences suggest that presence of ID region/domain within a transcription factor plays an important role in its biological functions. These ID sequences provide large flexible surfaces that can allow them to make more efficient physical and functional interactions with their target partners. Since transcription factors regulate expression of target genes by interacting with specific coregulatory proteins, these ID regions/domains can be used as a platform for such large macromolecular interactions, and may represent a mechanism for regulation of cellular processes. The precise structural basis for the function of these ID regions/do... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=3239124 Thu, 04 Feb 2010 16:38:55 +0100 3239124 http://www.medworm.com/index.php?rid=2902729&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2009%2F380976.html A quantitative frequency-domain model of induction-based magnetoreception is presented for elasmobranch fishes. We show that orientation with respect to the geomagnetic field can be determined by synchronous detection of electrosensory signals at harmonics of the vestibular frequency. The sensitivity required for this compass-sense mechanism is shown to be less than that known from behavioral experiments. Recent attached-magnet experiments have called into doubt the induction-based mechanism for magnetoreception. We show that the use of attached magnets would interfere with an induction-based mechanism unless relative movement between the electrosensory system and the attached magnet is less than 100 μm. This suggests that further experiments may be required to eliminate indu... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2902729 Sun, 18 Oct 2009 14:42:39 +0100 2902729 http://www.medworm.com/index.php?rid=2886090&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2009%2F380967.html Tropomyosin (Tm) consists of 7 quasiequivalent repeats known as “periods,” and its specific function may be associated with these periods. To test the hypothesis that either period 2 or 3 promotes force generation by inducing a positive allosteric effect on actin, we reconstituted the thin filament with mutant Tm in which either period 2 (Δ2Tm) or period 3 (Δ3Tm) was deleted. We then studied: isometric tension, stiffness, 6 kinetic constants, and the pCa-tension relationship. N-terminal acetylation of Tm did not cause any differences. The isometric tension in Δ2Tm remained unchanged, and was reduced to ~60% in Δ3Tm. Although the kinetic constants underwent small changes, the occupancy of strongly attached cross-bridges was not much different... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2886090 Tue, 13 Oct 2009 15:10:20 +0100 2886090 http://www.medworm.com/index.php?rid=2550152&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2009%2F434038.html The crystal structure of a putative dipeptidase (Phdpd) from Pyrococcus horikoshii OT3 was solved using X-ray data at 2.4 Å resolution. The protein is folded into two distinct entities. The N-terminal domain consists of the general topology of the α/β fold, and the C-terminal domain consists of five long mixed strands, four helices, and two 310 helices. The structure of Phdpd is quite similar to reported structures of prolidases from P. furiosus (Zn-Pfprol) and P. horikoshii (Zn-Phdpd), where Zn ions are observed in the active site resulting in an inactive form. However, Phdpd did not contain metals in the crystal structure and showed prolidase activity in the absence of additional Co ions, whereas the specific activities increased by 5 times in the presence of a ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2550152 Sun, 28 Jun 2009 16:13:56 +0100 2550152 http://www.medworm.com/index.php?rid=2468508&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F602870.html Since thermal gradients are almost everywhere, thermosensation could represent one of the oldest sensory transduction processes that evolved in organisms. There are many examples of temperature changes affecting the physiology of living cells. Almost all classes of biological macromolecules in a cell (nucleic acids, lipids, proteins) can present a target of the temperature-related stimuli. This review discusses some features of different classes of temperature-sensing molecules as well as molecular and biological processes that involve thermosensation. Biochemical, structural, and thermodynamic approaches are applied in the paper to organize the existing knowledge on molecular mechanisms of thermosensation. Special attention is paid to the fact that thermosensitive function cannot be assig... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468508 Wed, 10 Jun 2009 05:18:46 +0100 2468508 http://www.medworm.com/index.php?rid=2468507&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F474205.html The targets for tricyclic antidepressants (TCAs), selective serotonin reuptake inhibitors (SSRIs), and selective norepinephrine reuptake inhibitors (SNRIs) are known to be the serotonin and norepinephrine transport (reuptake) proteins which are embedded in presynaptic nerve terminals and function to bring these neurotransmitters from the synaptic cleft back into the presynaptic neuron. Using a combination of intrinsic and extrinsic fluorescence quenching, Stern-Volmer analysis, and protease protection assays, we have shown that therapeutics from each of these three classes of antidepressants bind to the extracellular S1S2 domain of the NR1-1b subunit of the NMDA receptor. These results are in agreement with recent work from our lab demonstrating the interaction of antidepressants with the ... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468507 Wed, 10 Jun 2009 05:18:46 +0100 2468507 http://www.medworm.com/index.php?rid=2468506&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F420963.html The purpose of this study was to investigate the time course of the volume-regulatory response and intracellular sodium concentration ([Na+]i) in the principal cells of rat kidney outer medulla collecting duct (OMCD) epithelia during acute swelling in hypotonic medium. Hypotonic shock was created by PBS diluted with 50% of water. Changes in cell volume were measured with calcein quenching method. Intracellular sodium concentration was studied with fluorescence dye Sodium Green. Principal cells of microdissected OMCD fragments swelled very fast. The characteristic time of swelling (τ1) was 0.65±0.05 seconds, and the volume increased more than 60% (92.9±5.6 and 151.3±9.8 μm3 control and peak volumes correspondently, P<.01). Afte... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468506 Wed, 10 Jun 2009 05:18:46 +0100 2468506 http://www.medworm.com/index.php?rid=2468505&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F267912.html Chemo- and phototaxis systems in bacteria and archaea serve as models for more complex signal transduction mechanisms in higher eukaryotes. Previous studies of the cytoplasmic fragment of the phototaxis transducer (pHtrII-cyt) from the halophilic archaeon Natronomonas pharaonis showed that it takes the shape of a monomeric or dimeric rod under low or high salt conditions, respectively. CD spectra revealed only approximately 24% helical structure, even in 4 M KCl, leaving it an open question how the rod-like shape is achieved. Here, we conducted CD, FTIR, and NMR spectroscopic studies under different conditions to address this question. We provide evidence that pHtrII-cyt is highly dynamic with strong helical propensity, which allows it to change from monomeric to dimeric helical co... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468505 Wed, 10 Jun 2009 05:18:46 +0100 2468505 http://www.medworm.com/index.php?rid=2468504&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F602639.html NADPH oxidase (NOX2) is a multisubunit membrane-bound enzyme complex that, upon assembly in activated cells, catalyses the reduction of free oxygen to its superoxide anion, which further leads to reactive oxygen species (ROS) that are toxic to invading pathogens, for example, the fungus Aspergillus fumigatus. Polymorphonuclear cells (PMNs) employ both nonoxidative and oxidative mechanisms to clear this fungus from the lung. The oxidative mechanisms mainly depend on the proper assembly and function of NOX2. We identified for the first time the NAD(P)H-dependent enzymes involved in such oxidative mechanisms by means of biexponential NAD(P)H-fluorescence lifetime imaging (FLIM). A specific fluorescence lifetime of 3670±140 picoseconds as compared to 1870 picoseconds for NAD(P)H bound t... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468504 Wed, 10 Jun 2009 05:18:46 +0100 2468504 http://www.medworm.com/index.php?rid=2468503&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F654672.html The species-area relationship is one of the central generalizations in ecology; however, its origin has remained a puzzle. Since ecosystems are understood as energy transduction systems, the regularities in species richness are considered to result from ubiquitous imperatives in energy transduction. From a thermodynamic point of view, organisms are transduction mechanisms that distribute an influx of energy down along the steepest gradients to the ecosystem's diverse repositories of chemical energy, that is, populations of species. Transduction machineries, that is, ecosystems assembled from numerous species, may emerge and evolve toward high efficiency on large areas that hold more matter than small ones. This results in the well-known logistic-like relationship between the area and t... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468503 Wed, 10 Jun 2009 05:18:46 +0100 2468503 http://www.medworm.com/index.php?rid=2468502&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2Fjournals%2Fjbp%2F2008%2F183516.html The malignancy of cancer disease depends on the ability of the primary tumor to metastasize to distant organs. The process of the metastasis formation has largely been analyzed, but still main pathways regarding the extravasation step at the end of the metastasis formation process are controversially discussed. An agreement has been reached about the importance of the endothelium to promote metastasis formation either by enhancing the growth of the primary tumor or by homing (targeting) the tumor cells to blood or lymph vessels. The mechanical properties of the invading tumor cells become the focus of several studies, but the endothelial cell mechanical properties are still elusive. This paper describes the different roles of the endothelium in the process of metastasis formation and focus... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2468502 Wed, 10 Jun 2009 05:18:46 +0100 2468502 http://www.medworm.com/index.php?rid=2028827&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2FGetArticle.aspx%3Fdoi%3D10.1155%2F2008%2F654672 The species-area relationship is one of the central generalizations in ecology; however, its origin has remained a puzzle. Since ecosystems are understood as energy transduction systems, the regularities in species richness are considered to result from ubiquitous imperatives in energy transduction. From a thermodynamic point of view, organisms are transduction mechanisms that distribute an influx of energy down along the steepest gradients to the ecosystem's diverse repositories of chemical energy, that is, populations of species. Transduction machineries, that is, ecosystems assembled from numerous species, may emerge and evolve toward high efficiency on large areas that hold more matter than small ones. This results in the well-known logistic-like relationship between the area and t... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=2028827 Thu, 11 Dec 2008 15:03:00 +0100 2028827 http://www.medworm.com/index.php?rid=1964735&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2FGetArticle.aspx%3Fdoi%3D10.1155%2F2008%2F602639 NADPH oxidase (NOX2) is a multisubunit membrane-bound enzyme complex that, upon assembly in activated cells, catalyses the reduction of free oxygen to its superoxide anion, which further leads to reactive oxygen species (ROS) that are toxic to invading pathogens, for example, the fungus Aspergillus fumigatus. Polymorphonuclear cells (PMNs) employ both nonoxidative and oxidative mechanisms to clear this fungus from the lung. The oxidative mechanisms mainly depend on the proper assembly and function of NOX2. We identified for the first time the NAD(P)H-dependent enzymes involved in such oxidative mechanisms by means of biexponential NAD(P)H-fluorescence lifetime imaging (FLIM). A specific fluorescence lifetime of 3670±140 picoseconds as compared to 1870 picoseconds for NAD(P)H bound t... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=1964735 Mon, 17 Nov 2008 11:40:16 +0100 1964735 http://www.medworm.com/index.php?rid=1880834&cid=s_37039_75_f&fid=37039&url=http%3A%2F%2Fwww.hindawi.com%2FGetArticle.aspx%3Fdoi%3D10.1155%2F2008%2F267912 Chemo- and phototaxis systems in bacteria and archaea serve as models for more complex signal transduction mechanisms in higher eukaryotes. Previous studies of the cytoplasmic fragment of the phototaxis transducer (pHtrII-cyt) from the halophilic archaeon Natronomonas pharaonis showed that it takes the shape of a monomeric or dimeric rod under low or high salt conditions, respectively. CD spectra revealed only approximately 24% helical structure, even in 4 M KCl, leaving it an open question how the rod-like shape is achieved. Here, we conducted CD, FTIR, and NMR spectroscopic studies under different conditions to address this question. We provide evidence that pHtrII-cyt is highly dynamic with strong helical propensity, which allows it to change from monomeric to dimeric helical co... Journal of Biophysics journals http://www.medworm.com/rss/comments.php?id=1880834 Thu, 16 Oct 2008 15:16:42 +0100 1880834