Materials Science 
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This page shows you the most recent publications within this specialty of the MedWorm directory.
12183 records returned
Effect of Mechanical Milling and Cold Pressing on Co Powder
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Cold pressing (CP) of the amorphous-like Co powder suppressed most of the XRD peaks, in particular the peak along (100) plane. The DSC curve of unmilled CP Co powder has shown a distinct sharp exothermic peak at 615C°. Upon annealing at 700C°, only the FCC phase with lattice parameter of 3.51 Å was detected by XRD. Our results implied that the exotherm at 615C° corresponds to compaction-pressure-assisted HCP to FCC first-order phase transition. The XRD analysis of 30 h milled powder revealed for the first time the FCC phase with a=3.80 Å. However, due to presence of (100) and (21...
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Are 100% Green Composites and Green Thermoplastics the New Materials for the Future?Email this article to a colleague.
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A review of the history of the evolution of material science and material technology shows us that one tendency for the future could be the use of agriculture resources. In this work, we review the performances of one of these resources, that is, wheat flour. We show that it is possible to get thermoplastic films with properties quasiequivalent to what is obtained for expensive pure starch. By adding natural fibres, composites are also obtained. These composites exhibit performances which allow their use only for short duration. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Human Dirofilaria repens Infection in Romania: A Case ReportEmail this article to a colleague.
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We present one of the few known cases of human dirofilariasis caused by D. repens in Romania. The patient developed unusual and severe clinical manifestations that mimicked pathological conditions like cellulitis or deep venous thrombosis. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
The Effect of Microstructure on Stress-Strain Behaviour and Susceptibility to Cracking of Pipeline SteelsEmail this article to a colleague.
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The effect of microstructure on the stress-strain behaviour of pipeline steels was studied. Slow strain rate (2×10-6 s-1) tests were conducted on grade X65 and X100 steels in silicone oil and hydrogen carbonate/carbonate solution. The as-received grade X100 steel at 75°C showed serrated stress-strain curves. The magnitude of the serrations depended upon the strain rate and test temperature. Annealing at 600°C or above removes the serrations, but this increased the susceptibility to transgranular cracking in hydrogen carbonate/carbonate solution at potentials below −800 mV (sce). The removal an...
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Effect of PGC-1α on Proliferation, Migration, and Transdifferentiation of Rat Vascular Smooth Muscle Cells Induced by High GlucoseEmail this article to a colleague.
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We assessed the role of PGC-1α (PPARγ coactivator-1 alpha) in glucose-induced proliferation, migration, and inflammatory gene expression of vascular smooth muscle cells (VSMCs). We carried out phagocytosis studies to assess the role of PGC-1α in transdifferentiation of VSMCs by flow cytometry. We found that high glucose stimulated proliferation, migration and inflammatory gene expression of VSMCs, but overexpression of PGC-1α attenuated the effects of glucose. In addition, overexpression of PGC-1α decreased mRNA and protein level of VSMCs-related genes, and induced macrophage-related gene exp...
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Primary Cutaneous Melanoma Arising in a Long-Standing Irradiated KeloidEmail this article to a colleague.
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We describe a case in which a primary desmoplastic melanoma arose in a long-standing, previously irradiated keloid. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Prevalence of Mental Disorders and Profile of Disablement among Primary Health Care Service Users in Lagos IslandEmail this article to a colleague.
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Conclusion. These findings are a useful guide to the probable prevalence of psychiatric morbidity in primary care in Nigeria and in the design of appropriate interventions. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Pleomorphic Adenoma of the Cervical Heterotopic Salivary Gland: A Case ReportEmail this article to a colleague.
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Conclusion. Pleomorphic adenoma may be rarely involving the neck. Although the prognosis is good, the choice treatment is the complete resection of the tumor. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 7, 2012 Category: Materials Science Source Type: research
Electrochemical Water
Oxidation with Carbon-Grafted
Iridium ComplexesEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2018095 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 6, 2012 Category: Materials Science Authors: Kathryn E. deKrafft, Cheng Wang, Zhigang Xie, Xin Su, Bruce J. Hinds and Wenbin Lin Source Type: research
Highly Efficient Enzyme
Immobilization and Stabilization
within Meso-Structured Onion-Like Silica for Biodiesel ProductionEmail this article to a colleague.
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Chemistry of MaterialsDOI: 10.1021/cm202125q (Source: Chemistry of Materials)
Source: Chemistry of Materials - February 6, 2012 Category: Materials Science Authors: Seung-Hyun Jun, Jinwoo Lee, Byoung Chan Kim, Ji Eun Lee, Jin Joo, Hyunmin Park, Jong Ho Lee, Sang-Mok Lee, Dohoon Lee, Sangyong Kim, Yoon-Mo Koo, Chae Ho Shin, Seung Wook Kim, Taeghwan Hyeon and Jungbae Kim Source Type: research
Fe2O3/TiO2 Tube-like
Nanostructures: Synthesis, Structural Transformation and the Enhanced
Sensing PropertiesEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201689x (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 6, 2012 Category: Materials Science Authors: Chun-Ling Zhu, Hai-Long Yu, Yue Zhang, Tie-Shi Wang, Qiu-Yun Ouyang, Li-Hong Qi, Yu-Jin Chen and Xin-Yu Xue Source Type: research
Incorporation of MnO2-Coated Carbon Nanotubes
between Graphene Sheets as Supercapacitor ElectrodeEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2016848 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 6, 2012 Category: Materials Science Authors: Zhibin Lei, Fuhua Shi and Li Lu Source Type: research
Kinetics of S-Nitrosation Processes
in Aqueous Polymer Solution for Controlled Nitric Oxide Loading: Toward
Tunable BiomaterialsEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201807c (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 6, 2012 Category: Materials Science Authors: Jessica M. Joslin and Melissa M. Reynolds Source Type: research
Effect of Chemical Structure
and Network Formation
on Physical Properties of Di(Cyanate Ester) ThermosetsEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201413t (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 6, 2012 Category: Materials Science Authors: Josiah T. Reams, Andrew J. Guenthner, Kevin R. Lamison, Vandana Vij, Lisa M. Lubin and Joseph M. Mabry Source Type: research
Sol–Gel Strategy
for Self-Induced Fluorination
and Dehydration of Silica with Extended Vacuum Ultraviolet Transmittance
and Radiation HardnessEmail this article to a colleague.
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Chemistry of MaterialsDOI: 10.1021/cm202664a (Source: Chemistry of Materials)
Source: Chemistry of Materials - February 6, 2012 Category: Materials Science Authors: Norberto Chiodini, Alessandro Lauria, Roberto Lorenzi, Sergio Brovelli, Francesco Meinardi and Alberto Paleari Source Type: research
Nanostructured Titanium
Nitride/PEDOT:PSS Composite
Films As Counter Electrodes of Dye-Sensitized Solar CellsEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201720p (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 3, 2012 Category: Materials Science Authors: Hongxia Xu, Xiaoying Zhang, Chuanjian Zhang, Zhihong Liu, Xinhong Zhou, Shuping Pang, Xiao Chen, Shanmu Dong, Zhongyi Zhang, Lixue Zhang, Pengxian Han, Xiaogang Wang and Guanglei Cui Source Type: research
New Poly(N,N-Dimethylaminoethyl Methacrylate)/Polyvinyl
Alcohol Copolymer Coated QCM Sensor for Interaction with CWA SimulantsEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201603n (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 3, 2012 Category: Materials Science Authors: Zhi Zhang, Jun Fan, Jianmei Yu, Shengrun Zheng, Wenjing Chen, Heguo Li, Zhijun Wang and Weiguang Zhang Source Type: research
Co3O4/ZnO Nanocomposites: From
Plasma Synthesis to Gas Sensing ApplicationsEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201591w (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 3, 2012 Category: Materials Science Authors: D. Bekermann, A. Gasparotto, D. Barreca, C. Maccato, E. Comini, C. Sada, G. Sberveglieri, A. Devi and R. A. Fischer Source Type: research
Famed Materials Scientist Charged With Grant FraudEmail this article to a colleague.
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Craig Grimes is accused of misusing $3 million in federal research funds (Source: Chemical and Engineering News)
Source: Chemical and Engineering News - February 3, 2012 Category: Chemistry Authors: Elizabeth K. Wilson Source Type: research
Functional Mesoporous
Silica Nanoparticles for the
Selective Sequestration of Free Fatty Acids from Microalgal OilEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201647t (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 3, 2012 Category: Materials Science Authors: Justin S. Valenstein, Kapil Kandel, Forrest Melcher, Igor I. Slowing, Victor S.-Y. Lin and Brian G. Trewyn Source Type: research
Thermoresponsive Semicrystalline
Poly(ε-caprolactone)
Networks: Exploiting Cross-linking with Cinnamoyl Moieties to Design
Polymers with Tunable Shape MemoryEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2011542 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 3, 2012 Category: Materials Science Authors: Amit Garle, Sany Kong, Umaprassana Ojha and Bridgette M. Budhlall Source Type: research
A Cost-Effective, Column-Free Route to Ethylene Glycol Oligomers EG6, EG10, and EG12Email this article to a colleague.
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SynthesisDOI: 10.1055/s-0031-1289685AbstractAlthough monodisperse ethylene glycol (EG) oligomers are important in a wide range of applications (ranging from drug therapeutics to materials science and engineering), their cost - especially for longer EG oligomers is often prohibitive. For example, decaethylene, EG10, and dodecaethylene, EG12, glycols cost hundreds of dollars per gram, and are only available from most vendors, including Sigma-Aldrich, in the polydispersed form. This high-cost is, in large part, due to laborious nature of synthesis and, above all, purification steps involved. Therefore, the motivation of our w...
Source: Synthesis - February 3, 2012 Category: Chemistry Authors: Grzybowski, Bartosz A.Gothard, Chris M. Tags: paper Source Type: research
Reduction and Functionalization
of Graphene Oxide
Sheets Using Biomimetic Dopamine Derivatives in One StepEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201664n (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 2, 2012 Category: Materials Science Authors: Izabela Kaminska, Manash R. Das, Yannick Coffinier, Joanna Niedziolka-Jonsson, Jonusz Sobczak, Patrice Woisel, Joel Lyskawa, Marcin Opallo, Rabah Boukherroub and Sabine Szunerits Source Type: research
On a Novel Catalytic System
Based on Electrospun Nanofibers
and M-POSSEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201766r (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 2, 2012 Category: Materials Science Authors: Erika Simona Cozza, Valentina Bruzzo, Fabio Carniato, Enrico Marsano and Orietta Monticelli Source Type: research
DNA Immobilization and
Detection on Cellulose Paper
using a Surface Grown Cationic Polymer via ATRPEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201483h (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 2, 2012 Category: Materials Science Authors: Ahmed Aied, Yu Zheng, Abhay Pandit and Wenxin Wang Source Type: research
Anisotropic Oxygen Ion
Diffusion in Layered PrBaCo2O5+δEmail this article to a colleague.
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Chemistry of MaterialsDOI: 10.1021/cm203502s (Source: Chemistry of Materials)
Source: Chemistry of Materials - February 2, 2012 Category: Materials Science Authors: Mónica Burriel, Juan Peña-Martínez, Richard J. Chater, Sarah Fearn, Andrey V. Berenov, Stephen J. Skinner and John A. Kilner Source Type: research
Supercapacitors Based
on Polymeric Dioxypyrroles and Single Walled Carbon NanotubesEmail this article to a colleague.
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Chemistry of MaterialsDOI: 10.1021/cm201110t (Source: Chemistry of Materials)
Source: Chemistry of Materials - February 2, 2012 Category: Materials Science Authors: Merve Ertas, Ryan M. Walczak, Rajib K. Das, Andrew G. Rinzler and John R. Reynolds Source Type: research
Organic Conducting Polymer–Protein
InteractionsEmail this article to a colleague.
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Chemistry of MaterialsDOI: 10.1021/cm203138j (Source: Chemistry of Materials)
Source: Chemistry of Materials - February 2, 2012 Category: Materials Science Authors: Michael J. Higgins, Paul J. Molino, Zhilian Yue and Gordon G. Wallace Source Type: research
Current Strategies and Future Perspectives for Intraperitoneal Adhesion PreventionEmail this article to a colleague.
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Discussion Mesothelial cells play a crucial physiological role in frictionless gliding of the serosa and the maintenance of an antiadhesive
surface. The formation of postoperative adhesions results from a cascade of events and is regulated by various cellular and
humoral factors. Therefore, optimization or functionalization of barrier materials by developments interacting with this cascade
on a structural or pharmacological level could give an innovative input for future strategies in peritoneal adhesion prevention.
For this purpose, the proper understanding of the formal pathogenesis of adhesion formation i...
Source: Journal of Gastrointestinal Surgery - February 2, 2012 Category: Surgery Tags: Journal of Gastrointestinal Surgery Source Type: research
Japan to consolidate research organizationsEmail this article to a colleague.
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Nature: The Japanese government is preparing to merge five of its science organizations: the RIKEN network of basic research laboratories, the National Institute for Materials Science, the Japan Agency for Marine-Earth Science and Technology, the National Research Institute for Earth Science and Disaster Prevention, and the Japan Science and Technology Agency. The change is intended to increase efficiency while reducing costs. The agencies involved would pool research and administrative resources, and a supervisory body that covers all five agencies will probably be established. Few details are known about the timing or po...
Source: Physics Today News Picks - February 2, 2012 Category: Physics Authors: Physics Today Source Type: news
Cellulose Nanofiber Orientation
in Nanopaper and Nanocomposites
by Cold DrawingEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2016766 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Houssine Sehaqui, Ngesa Ezekiel Mushi, Seira Morimune, Michaela Salajkova, Takashi Nishino and Lars A. Berglund Source Type: research
Facile Fabrication and
Enhanced Sensing Properties
of Hierarchically Porous CuO ArchitecturesEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2013882 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Guoxing Zhu, Huan Xu, Yunyun Xiao, Yuanjun Liu, Aihua Yuan and Xiaoping Shen Source Type: research
Intense Photoluminescence
from Ceria-Based Nanoscale
Lamellar HybridEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201613z (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Takaaki Taniguchi, Yuki Sonoda, Makoto Echikawa, Yusuke Watanabe, Kazuto Hatakeyama, Shintaro Ida, Michio Koinuma and Yasumichi Matsumoto Source Type: research
Silica Nanoparticles and
Frameworks from Rice Husk
BiomassEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201619u (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Weixing Wang, Jarett C. Martin, Xiaotian Fan, Aijie Han, Zhiping Luo and Luyi Sun Source Type: research
Higher cell stiffness indicating lower metastatic potential in B16 melanoma cell variants and in (−)-epigallocatechin gallate-treated cellsEmail this article to a colleague.
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Conclusions Our study with AFM clearly demonstrates that cell stiffness is a reliable quantitative indicator of migration potential, and
very likely metastatic potential, even in morphologically similar cells. And increased cell stiffness may be a key nanomechanical
feature in inhibition of metastasis.
Content Type Journal ArticleCategory Original PaperPages 1-8DOI 10.1007/s00432-012-1159-5Authors
Tatsuro Watanabe, Research Institute for Clinical Oncology, Saitama Cancer Center, Kitaadachi-gun, Saitama, 362-0806 JapanHiromi Kuramochi, National Institute for Materials Science, International Center fo...
Source: Journal of Cancer Research and Clinical Oncology - February 1, 2012 Category: Cancer & Oncology Tags: Journal of Cancer Research and Clinical Oncology Source Type: research
Importance of Interfaces
in Governing Thermal Transport
in Composite Materials: Modeling and Experimental PerspectivesEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201496z (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Ajit K. Roy, Barry L. Farmer, Vikas Varshney, Sangwook Sihn, Jonghoon Lee and Sabyasachi Ganguli Source Type: research
Crystal Structure, Energetics,
And Electrochemistry
of Li2FeSiO4 Polymorphs from First Principles
CalculationsEmail this article to a colleague.
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Chemistry of MaterialsDOI: 10.1021/cm202818u (Source: Chemistry of Materials)
Source: Chemistry of Materials - February 1, 2012 Category: Materials Science Authors: A. Saracibar, A. Van der Ven and M. E. Arroyo-de Dompablo Source Type: research
Spectroscopic Ellipsometry
Analysis of a Thin Film
Composite Membrane Consisting of Polysulfone on a Porous α-Alumina
SupportEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2015958 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Wojciech Ogieglo, Herbert Wormeester, Matthias Wessling and Nieck E. Benes Source Type: research
MWCNTs/P(St-co-GMA) Composite Nanofibers
of Engineered Interface Chemistry for Epoxy Matrix NanocompositesEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am2014162 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Elif Özden-Yenigün, Yusuf Z. Menceloğlu and Melih Papila Source Type: research
Effects of Side-Chain
Interdigitation on Stability:
An Environmentally, Electrically, and Thermally Stable Semiconducting
PolymerEmail this article to a colleague.
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ACS Applied Materials & InterfacesDOI: 10.1021/am201301u (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 1, 2012 Category: Materials Science Authors: Danbi Choi, Ban-Seok Jeong, Byungcheol Ahn, Dae Sung Chung, Kimin Lim, Se Hyun Kim, Seon Uk Park, Moonhor Ree, Jaejung Ko and Chan Eon Park Source Type: research
Giant Diaphragmatic Angiosarcoma of Adult: A Case Report and Review of LiteratureEmail this article to a colleague.
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We present the case of an adult patient who had a primary giant angiosarcoma of the left-sided diaphragm. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 1, 2012 Category: Materials Science Source Type: research
Real-Time Compressive Sensing MRI Reconstruction Using GPU Computing and Split Bregman MethodsEmail this article to a colleague.
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Compressive sensing (CS) has been shown to enable dramatic acceleration of MRI acquisition in some applications. Being an iterative reconstruction technique, CS MRI reconstructions can be more time-consuming than traditional inverse Fourier reconstruction. We have accelerated our CS MRI reconstruction by factors of up to 27 by using a split Bregman solver combined with a graphics processing unit (GPU) computing platform. The increases in speed we find are similar to those we measure for matrix multiplication on this platform, suggesting that the split Bregman methods parallelize efficiently. We demonstrate that the combina...
Source: Journal of Nanomaterials - February 1, 2012 Category: Materials Science Source Type: research
Orbital Myiasis: Due to Invasion of Larvae of Flesh Fly (Wohlfahrtia magnifica) in a Child; Rare PresentationEmail this article to a colleague.
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We report a case of ocular myiasis in 1.5 years old child belonging to urban slum after history of minor injury on left upper lid due to fall from bed. The purpose of reporting this case is to highlight the ocular association of W. magnifica. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 1, 2012 Category: Materials Science Source Type: research
Modelling the Implications of Quality Management Elements on Strategic FlexibilityEmail this article to a colleague.
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This paper presents a theoretical and empirical analysis of the implications of a quality management (QM) initiative on strategic flexibility. Our study defines flexibility from a strategic approach and examines the extent to which, why, and how the triggering factors of strategic flexibility are related to QM elements. The hypotheses put forward are tested in an empirical study carried out on a sample of Spanish firms, using structural equation models. The results demonstrate the positive effect of adopting an integral QM initiative on enhancing strategic flexibility. QM enhances strategic flexibility more effectively whe...
Source: Journal of Nanomaterials - February 1, 2012 Category: Materials Science Source Type: research
A Remark on Wavelet Bases in Weighted Lp SpacesEmail this article to a colleague.
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The paper deals with unconditional wavelet bases in weighted Lp spaces. Inhomogeneous wavelets of Daubechies type are considered. Necessary and sufficient conditions for weights are found for which the wavelet system is an unconditional basis in weighted Lp spaces in dependence on p. (Source: Journal of Nanomaterials)
Source: Journal of Nanomaterials - February 1, 2012 Category: Materials Science Source Type: research
Potential Operators on Cones of Nonincreasing FunctionsEmail this article to a colleague.
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Necessary and sufficient conditions on weight pairs guaranteeing the two-weight inequalities for
the potential operators (Iαf)(x)=∫0∞(f(t)/|x−t|1−α)dt and (ℐα1,α2f)(x,y)=∫0∞∫0∞(f(t,τ)/|x−t|1−α1|y−τ|1−α2)dtdτ on the cone of nonincreasing functions are derived. In the case of ℐα1,α2, we assume that the right-hand side weight is
of product type. The same problem for other mixed-type double potential operators is also studied. Expon...
Source: Journal of Nanomaterials - February 1, 2012 Category: Materials Science Source Type: research
Dynamic and static mechanical analysis of resin luting cements.Email this article to a colleague.
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Abstract
Various types of indirect restorations are available for dental treatment and resin cements are commonly used as a luting medium. The aim of this study was to evaluate the mechanical properties of contemporary resin luting agents under different testing conditions and temperatures. The materials tested were Choice 2 (CH), Clearfil Esthetic Cement (EC), Resicem (RC) and RelyX Unicem (RX). Each material was examined after 24 h of storage at 21 °C dry and wet at 21, 37 and 50 °C under dynamic and static testing and parameters such as shear and flexural modulus, loss tangent, dynamic viscosity and Poisson...
Source: Journal of the Mechanical Behavior of Biomedical Materials - February 1, 2012 Category: Materials Science Authors: Tolidis K, Papadogiannis D, Papadogiannis Y, Gerasimou P Tags: J Mech Behav Biomed Mater Source Type: research
Laser processed TiN reinforced Ti6Al4V composite coatings.Email this article to a colleague.
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Abstract
The purpose of this first generation investigation is to evaluate fabrication, in vitro cytotoxicity, cell-material interactions and tribological performance of TiN particle reinforced Ti6Al4V composite coatings for potential wear resistant load bearing implant applications. The microstructural analysis of the composites was performed using scanning electron microscope and phase analysis was done with X-ray diffraction. In vitro cell-material interactions, using human fetal osteoblast cell line, have been assessed on these composite coatings and compared with Ti6Al4V alloy control samples. The tribological...
Source: Journal of the Mechanical Behavior of Biomedical Materials - February 1, 2012 Category: Materials Science Authors: Balla VK, Bhat A, Bose S, Bandyopadhyay A Tags: J Mech Behav Biomed Mater Source Type: research
Comparison of biaxial mechanical properties of coronary sinus tissues from porcine, ovine and aged human species.Email this article to a colleague.
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In this study, we performed a multi-axial mechanical test and histological analysis to characterize the mechanical and structural properties of the aged human, porcine and ovine CS tissues. The results showed that the aged human CS tissues exhibited much stiffer and highly anisotropic behaviors compared to the porcine and ovine. Both of the porcine and ovine CS vessel walls were thicker and mainly composed of striated muscle fibers (SMF), whereas the thinner aged human CS had higher collagen, less SMF, and more fragmented elastin fibers, which are possibly due to aging effects. We also observed that the anatomical features...
Source: Journal of the Mechanical Behavior of Biomedical Materials - February 1, 2012 Category: Materials Science Authors: Pham T, Sun W Tags: J Mech Behav Biomed Mater Source Type: research
Lubrication of metal-on-metal hip joints: The effect of protein content and load on film formation and wear.Email this article to a colleague.
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Abstract
Lubricant films were measured for a series of bovine serum and protein containing (albumin, globulin) saline solutions for CoCrMo femoral component sliding against a glass disc. Central film thickness was measured by optical interferometry as a function of time (constant mean speed: 0 and 10 mm/s) and variable mean speed (0-50 mm/s). The effect of load (5-20 N) on film thickness was also studied. The development of the wear scar on the CoCrMo surface was monitored by measuring the width of the contact zone during the film thickness tests. The results showed film thickness increased with time for both th...
Source: Journal of the Mechanical Behavior of Biomedical Materials - February 1, 2012 Category: Materials Science Authors: Myant C, Underwood R, Fan J, Cann PM Tags: J Mech Behav Biomed Mater Source Type: research
