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Light-driven PT symmetry in colloids with gain and loss nanoparticles
We consider a planar layer of a colloid solution with gain and loss nanoparticles. The concentration of the particles of both types is ...
Source: Journal of the Optical Society of America B - September 15, 2023 Category: Physics Authors: Alexander A. Zharov Nina A. Zharova Source Type: research
Novel intraocular shielding device for eye plaque brachytherapy using magnetite nanoparticles: A proof-of-concept study using radiochromic film and Monte Carlo simulations
Eye plaque brachytherapy is a mainstay treatment for uveal melanomas despite potential toxicities to normal tissues. This work proposes a nanoparticle ferrofluid as a novel intraocular shielding device. With a modified magnetic plaque, the shielding particles are drawn to the tumor surface, attenuating dose beyond the tumor while maintaining prescription dose to the target.
Source: Brachytherapy - September 15, 2023 Category: Cancer & Oncology Authors: Courtney C. Oare, James P. Dailey, Bruce Gerbi, Clara Ferreira Source Type: research
Green synthesis of orthorhombic Mn2O3 nanoparticles; influence of the oxygen vacancies on antimicrobial activity and cationic dye degradation
New J. Chem., 2023, Advance Article DOI: 10.1039/D3NJ02678G, PaperPrammitha Rajaram, Ambrose Rejo Jeice, Kumarasamy Jayakumar An environmentally friendly bottom-up method for oxidizing and reducing heterocyclic chemicals from biological sources and producing metal oxides is proposed. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - New J. Chem. latest articles - September 14, 2023 Category: Chemistry Authors: Prammitha Rajaram Source Type: research
Hierarchical sulfur doped scaly carbon coupled with cerium oxide nanoparticles based electrochemical sensor for the sensitive determination of uric acid
New J. Chem., 2023, Accepted Manuscript DOI: 10.1039/D3NJ02870D, PaperDi Zhu, Xinying Li, Lili Fu, Tianshuo Bai, Qin Wang, Chunlei Ma, Xin Sun, Lixin Lin, Xue-Mei Li A cost-effective and environmentally friendly method has been proposed for synthesizing a nanomaterial composed of highly dispersed cerium oxide (CeO2) nanoparticles anchored on sulfur-doped scaly carbon (CeO2@S-SC). This nanomaterial was... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - New J. Chem. latest articles - September 14, 2023 Category: Chemistry Authors: Di Zhu Source Type: research
Mechanically recyclable melt-spun fibers from lignin esters and iron oxide nanoparticles: towards circular lignin materials
This article is licensed under aCreative Commons Attribution 3.0 Unported Licence.Unnimaya Thalakkale Veettil, Adrian Moreno, Mohammad Morsali, Alberto Jos é Huertas-Alonso, Ievgen V. Pylypchuk, Liyang Liu, Mika H. Sipponen The inferior thermoplastic properties have limited production of melt-spun fibers from lignin. Here we report on the controlled esterification of softwood kraft lignin (SKL) to enable scalable, solvent-free melt spinning... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Green Chem. latest articles - September 14, 2023 Category: Chemistry Authors: Unnimaya Thalakkale Veettil Source Type: research
Synthesis of Ag nanoparticles for selective dual detection of glutathione and dopamine using N, N-dimethyl-p-phenylenediamine mediated colorimetric probe
We report a simple and easy method to synthesize Ag nanoparticles (Ag NPs) and demonstrate its potential for the detection of glutathione (GSH) and dopamine (DA) via colorimetric assay. The Ag NPs were found to be monodispersed and spherical with a size of 5 ± 2 nm. The X-ray diffraction (XRD) and high resolution transmission electron microscopy (HR-TEM) investigations revealed the formation of crystalline Ag NPs. The colour of N, N-dimethyl-p-phenylenediamine colorimetric assay changed from dark pink to colourless when the concentration of GSH was increased from 1 to 40 μM. Notably, the suspension colour changed from da...
Source: Chemosphere - September 14, 2023 Category: Chemistry Authors: Akash Kumar Sharmiladevi Ramamoorthy Anandhakumar Sundaramurthy Source Type: research
Dietary Effects of Selenium Nanoparticles on Growth Performance, Survival Rate, Chemical Composition, and Muscle Bioaccumulation of Nile Tilapia (Oreochromis niloticus)
This study evaluated the effect of selenium nanoparticles on growth performance, survival rate, chemical composition, and bioaccumulation of selenium in the muscle of Nile tilapia (Oreochromis niloticus). Fish with an average weight of 33.1 ± 1.0 g were distributed in 12 fiberglass tanks and fed for 56 days with different levels of selenium nanoparticles, 0, 0.5, 1, and 2 mg/kg of diet, considered as control, T1, T2, and T3, respectively. Body weight increase (BWI), specific growth rate (SGR), and food conversion ratio (FCR) were significantly influenced by 2 mg/kg of selenium nanoparticles compared to the other treatment...
Source: Biological Trace Element Research - September 14, 2023 Category: Biology Authors: Shervin Sheikh Fariborz Ghojaghi Afshin Ghelichi Sarah Jorjani Source Type: research
From lipid nanoparticles to precision therapies for hematologic diseases: getting closer
J Leukoc Biol. 2023 Sep 14:qiad108. doi: 10.1093/jleuko/qiad108. Online ahead of print.NO ABSTRACTPMID:37707301 | DOI:10.1093/jleuko/qiad108
Source: Journal of Leukocyte Biology - September 14, 2023 Category: Hematology Authors: Hector Mayani Source Type: research
Highly selective molecularly imprinted polymer nanoparticles (MIP NPs)-based microfluidic gas sensor for tetrahydrocannabinol (THC) detection
Anal Chim Acta. 2023 Oct 16;1278:341749. doi: 10.1016/j.aca.2023.341749. Epub 2023 Aug 22.ABSTRACTA highly selective microfluidic integrated metal oxide gas sensor for THC detection is reported based on MIP nanoparticles (MIP NPs). We synthesized MIP NPs with THC recognition sites and coated them on a 3D-printed microfluidic channel surface. The sensitivity and selectivity of coated microfluidic integrated gas sensors were evaluated by exposure to THC, cannabidiol (CBD), methanol, and ethanol analytes in 300-700 ppm at 300 °C. For comparison, reference signals were obtained from a microfluidic channel coated with nonimpri...
Source: Analytica Chimica Acta - September 14, 2023 Category: Chemistry Authors: Peyman Azhdary Sajjad Janfaza Somayeh Fardindoost Nishat Tasnim Mina Hoorfar Source Type: research
An ultrasensitive J-shaped optical fiber LSPR aptasensor for the detection of Helicobacter pylori
In this study, an originally bent structure, named as J-shaped optical fiber probe, was first designed to engineer a localized surface plasmon resonance (LSPR) aptamer biosensor for the rapid and ultrasensitive detection of Helicobacter pylori (H. pylori). The J-shaped optical fiber probe exhibited a significant improvement in refractive index sensitivity (RIS) and LSPR signal response. Meantime, the original sequence of aptamer was truncated in order to effectively capture H. pylori on the optical fiber surface. Besides, a spacer nucleic acid with short stem-loop structure was adopted to control the aptamer density on gol...
Source: Analytica Chimica Acta - September 14, 2023 Category: Chemistry Authors: Wei Ning Shunming Hu Chen Zhou Jie Luo Yu Li Chuyan Zhang Zewei Luo Yongxin Li Source Type: research
A molecularly imprinted screen-printed carbon electrode for electrochemical epinephrine, lactate, and cortisol metabolites detection in human sweat
This study presents a novel approach to the detection of epinephrine, lactate, and cortisol biomarkers in human sweat using molecularly-imprinted polymers (MIP) embedded screen printed carbon electrode (SPCE) sensors. The epinephrine and lactate MIP SPCE sensors were fabricated by epinephrine or lactate-imprinted polyaniline co-polymerized with 3-aminophenylboronic acid and gold nanoparticles (PANI-co-PBA/AuNP) selective membrane on a commercial SPCE. The cortisol sensor was comprised of a cortisol-imprinted poly(glycidyl methacryate-co-ethylene glycol dimethacrylate) (poly (GMA-co-EGDMA)@AuNP selective membrane deposited ...
Source: Analytica Chimica Acta - September 14, 2023 Category: Chemistry Authors: Samuel M Mugo Scott V Robertson Weihao Lu Source Type: research
Infrared pulsed fiber laser-produced gold and silver-109 nanoparticles for laser desorption/ionization mass spectrometry of steroid hormones
CONCLUSION: The results of the quantitative analysis of steroid hormones using silver-109 and gold nanoparticles prepared with PFL 2D GS LGN for LDI-MS and semiautomatic LDI-MSI are presented. It has been proven that nanoparticles obtained by laser synthesis can be successfully used for the analysis of steroid hormones in a wide range of concentrations.PMID:37706428 | DOI:10.1002/rcm.9621
Source: Rapid Communications in Mass Spectrometry : RCM - September 14, 2023 Category: Chemistry Authors: Aneta P łaza-Altamer Artur Ko łodziej Zuzanna Krupa Joanna Nizio ł Tomasz Ruman Source Type: research
Development of a novel fluorescent aptasensor based on the interaction between hexagonal β-Co(OH) < sub > 2 < /sub > nanoplates and nitrogen-doped carbon dots for ultrasensitive detection of patulin
In this study, we have developed a novel fluorescent aptasensor that utilizes nitrogen-doped carbon dots (N-CDs) as the fluorescent donor and hexagonal β-Co(OH)2 nanoplates as the fluorescent acceptor. N-CDs were synthesized through the hydrothermal method, resulting in spherical particles with a diameter of 7.6 nm. These nanoparticles exhibited excellent water solubility and displayed a vibrant blue emission at 448 nm when excited at 360 nm. Cobalt hydroxide nanoplates with a beta crystal structure [β-Co(OH)2] were synthesized using a simple co-precipitation method, exhibiting hexagonal plate-like shapes with uniform la...
Source: Analytica Chimica Acta - September 14, 2023 Category: Chemistry Authors: Qi Sun Zhijuan Li Ningxin Liu Yuting Zhou Fuyan Zhang Shuang Li Peng Jin Rui Xiang Tao Le Source Type: research
Surfactant-mediated colorimetric assay assisted with in-situ rolling circle amplification on magnetic beads
This study offers a new strategy to improve the sensitivity and selectivity for the AuNPs-based colorimetric assay, taking advantages of specific aptamer recognition, in-situ RCA on MBs, magnetic separation, and smartphone-based portable device.PMID:37709452 | DOI:10.1016/j.aca.2023.341709
Source: Analytica Chimica Acta - September 14, 2023 Category: Chemistry Authors: Shuang Xia Wenli Wu Fangchao Yin Jianguo Shi Yaohong Ma Jin-Ming Lin Xu Wu Qiongzheng Hu Source Type: research
Molecular imprinted polymer-based potentiometric approach for the assay of the co-formulated tetracycline HCl, metronidazole and bismuth subcitrate in capsules and spiked human plasma
Anal Chim Acta. 2023 Oct 16;1278:341707. doi: 10.1016/j.aca.2023.341707. Epub 2023 Aug 10.ABSTRACTBACKGROUND: An anti-H-pylori co-formulated mixture of tetracycline HCl (TET), metronidazole (MET), and bismuth subcitrate (BSC) is recently available. Only two chromatographic and spectrophotometric methods are reported for determining those drugs simultaneously where the effect of impurities that could be present as well as the biological fluids matrix influence do not be taken into consideration. There is a need to develop an easy-to-use potentiometric technique for analysis of TET, MET, and BSC in their co-formulated capsul...
Source: Analytica Chimica Acta - September 14, 2023 Category: Chemistry Authors: Amal M Hassan Khadiga M Kelani Maha A Hegazy Mahmoud A Tantawy Source Type: research
