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Showing 31-60 of 162 results for "204390" within Papers
Lung-Shuo Wang et al.
International journal of nanomedicine, 10, 2685-2696 (2015-04-17)
Silver nanoparticles have been used in various fields, and several synthesis processes have been developed. The stability and dispersion of the synthesized nanoparticles is vital. The present article describes a novel approach for one-step synthesis of silver nanoparticles-embedded chitosan particles.
Irina Blinova et al.
Environmental science and pollution research international, 20(5), 3456-3463 (2012-11-13)
Although silver nanoparticles (NPs) are increasingly used in various consumer products and produced in industrial scale, information on harmful effects of nanosilver to environmentally relevant organisms is still scarce. This paper studies the adverse effects of silver NPs to two
Claudia Keil et al.
Polymers, 12(11) (2020-11-22)
Chronic non-healing wounds represent a substantial economic burden to healthcare systems and cause a considerable reduction in quality of life for those affected. Approximately 0.5-2% of the population in developed countries are projected to experience a chronic wound in their
Chiara Di Bari et al.
Bioelectrochemistry (Amsterdam, Netherlands), 107, 30-36 (2015-11-03)
cathodes. Nanostructuring was provided by gold nanorods (AuNRs), which were characterized and covalently attached to electrodes made of low-density graphite. The nanostructured electrode was the scaffold for covalent and oriented attachment of ThLc. The bioelectrocatalytic currents measured for oxygen reduction
Takamitsu Miyayama et al.
Toxicology, 305, 20-29 (2013-01-22)
Silver (Ag) possesses antibacterial activity and has been used in wound dressings and deodorant powders worldwide. However, the metabolic behavior and biological roles of Ag in mammals have not been well characterized. In the present study, we exposed human bronchial
Susana I L Gomes et al.
International journal of environmental research and public health, 12(6), 6858-6878 (2015-06-19)
The effects of several copper (Cu) and silver (Ag) nanomaterials were assessed using the cellular energy allocation (CEA), a methodology used to evaluate the energetic status and which relates with organisms' overall condition and response to toxic stress. Enchytraeus crypticus
Fabrication of SWCNT-Ag nanoparticle hybrid included self-assemblies for antibacterial applications.
Sayanti Brahmachari et al.
PloS one, 9(9), e106775-e106775 (2014-09-06)
The present article reports the development of soft nanohybrids comprising of single walled carbon nanotube (SWCNT) included silver nanoparticles (AgNPs) having superior antibacterial property. In this regard aqueous dispersing agent of carbon nanotube (CNT) containing a silver ion reducing unit
Mrinal Dutta et al.
ACS nano, 9(7), 6891-6899 (2015-07-15)
We report on an efficient hybrid Si nanocrystal quantum dot modified radial p-n junction thinner Si solar cell that utilizes the advantages of effective exciton collection by energy transfer from nanocrystal-Si (nc-Si) quantum dots to underlying radial p-n junction Si
Sudhakar Ganta et al.
Dalton transactions (Cambridge, England : 2003), 44(34), 15181-15188 (2015-04-01)
A rare variety of coordination rings having the M3L6 composition are prepared by the combination of Pd(NO3)2 with an imidazolyl or benzimidazolyl appended bidentate non-chelating ligand (i.e.L1 or L2). The variable concentration 1H NMR spectra of the trinuclear complexes [Pd3(L1)6](NO3)6
Mohammad Ali et al.
Materials science & engineering. C, Materials for biological applications, 58, 359-365 (2015-10-20)
Unlike chemical synthesis, biological synthesis of nanoparticles is gaining tremendous interest, and plant extracts are preferred over other biological sources due to their ample availability and wide array of reducing metabolites. In this project, we investigated the reducing potential of
Duraisamy Kalpana et al.
Enzyme and microbial technology, 52(3), 151-156 (2013-02-16)
Silver nanoparticles were synthesized by biological method using cultural filtrate of Klebsiella pneumoniae cultured under simulated microgravity and silver nitrate solution as precursor. The nanoparticles exhibited typical plasmon absorption maximum of silver nanoparticles between 405 and 407 nm. Spherical silver
Jing-Kun Yan et al.
Carbohydrate polymers, 97(2), 391-397 (2013-08-06)
A facile, simple, and eco-friendly method using 4-acetamido-2,2,6,6-tetramethypiperidine-1-oxyl radical-oxidized curdlan (Oc) as both reducing and stabilizing agents was developed for the fabrication of silver nanoparticles (AgNPs) from silver nitrate (AgNO₃). The structure, morphology, and particle size of the as-prepared AgNPs
Isaac Asiamah et al.
Bioorganic & medicinal chemistry, 23(21), 7007-7014 (2015-10-07)
Nordihydroguaiaretic acid (NDGA) is a natural polyphenol with a broad spectrum of pharmacological properties. However, its usefulness is hindered by the lack of understanding of its pharmacological and toxicological pathways. Previously we showed that oxidative cyclisation of NDGA at physiological
Claire Saulou et al.
Analytical and bioanalytical chemistry, 405(8), 2685-2697 (2013-01-29)
The present work was focused on elucidating biochemical changes in the model bacterium Escherichia coli exposed to ionic silver mediated stress, at a single-cell scale. In order to achieve this, in situ synchrotron Fourier-transform infrared (sFTIR) microspectroscopy was performed, for
Kohsuke Mori et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(33), 11885-11893 (2015-07-17)
Color-controlled spherical Ag nanoparticles (NPs) and nanorods, with features that originate from their particle sizes and morphologies, can be synthesized within the mesoporous structure of SBA-15 by the rapid and uniform microwave (MW)-assisted alcohol reduction method in the absence or
Chia-Yun Chen et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 16(3), 540-545 (2014-12-19)
Metal-assisted chemical etching (MaCE) on silicon (Si)-mediated by polyvinylpyrrolidone (PVP)-is systematically investigated herein. It is found that the morphologies and crystallographic natures of the grown silver (Ag) dendrites can be significantly modulated, with the presence of PVP in the MaCE
R K Kar et al.
Pakistan journal of biological sciences : PJBS, 16(24), 1991-1996 (2014-02-13)
Regulation of stomatal aperture is crucial in terrestrial plants for controlling water loss and gaseous exchange with environment. While much is known of signaling for stomatal opening induced by blue light and the role of hormones, little is known about
Minghuan Wang et al.
Nanoscale, 5(17), 7913-7919 (2013-07-16)
Herein, we report the preparation of poly (cyclotriphosphazene-co-4,4'-sulfonyldiphenol) (PZS) nanotubes decorated with Ag nanoparticles (NPs). The PZS nanotubes have been synthesized firstly via an in situ template approach, and then Ag nanoparticles were prepared via in situ reduction of AgNO3
N Cruz et al.
Chemosphere, 135, 304-311 (2015-05-13)
To assess if the geochemical reactivity and human bioaccessibility of silver nanoparticles (AgNPs) in soils can be determined by routine soil tests commonly applied to other metals in soil, colloidal Ag was introduced to five pots containing urban soils (equivalent
Sandra Teresa Orta-García et al.
Journal of applied toxicology : JAT, 35(10), 1189-1199 (2015-08-19)
The antimicrobial properties of silver nanoparticles (AgNPs) have made these particles one of the most used nanomaterials in consumer products. Therefore, an understanding of the interactions (unwanted toxicity) between nanoparticles and human cells is of significant interest. The aim of
Xiang Deng et al.
Analytical and bioanalytical chemistry, 407(16), 4607-4613 (2015-04-22)
Nitroaromatic compounds, for example trinitrotoluene and 2,4,6-trinitrophenol (TNP), are well-known primary constituents of many unexploded landmines worldwide. These compounds are recognized as environmental contaminants and as toxic to living organisms. Therefore, Förster resonance energy transfer (FRET) for TNP detection was
Mohammad Kamruzzaman et al.
Biomedical microdevices, 15(1), 195-202 (2012-10-12)
A rapid and sensitive chemiluminescence (CL) system coupled with a microfluidic chip has been presented to determine vitamin B12 (VB12) based on the reaction of luminol and silver nitrate (AgNO(3)) in the presence of gold nanoparticles (AuNPs). A microfluidic chip
Yi-Chun Kuo et al.
PloS one, 6(7), e22382-e22382 (2011-08-06)
Surface plasmon resonance (SPR) biosensors have been recognized as a useful tool and widely used for real-time dynamic analysis of molecular binding affinity because of its high sensitivity to the change of the refractive index of tested objects. The conventional
E V Sabaneeva
Tsitologiia, 31(1), 5-14 (1989-01-01)
The technique of silver staining of the active nucleolar organizer regions is discussed. The specificity of the technique, the mechanism of the reaction, the nature and possible functions of argyrophilic protein(s) are considered. Special attention is paid to the fact
Patrycja Bober et al.
Biomacromolecules, 15(10), 3655-3663 (2014-08-28)
In this work, flexible and free-standing composite films of nanofibrillated cellulose/polypyrrole (NFC/PPy) and NFC/PPy-silver nanoparticles (NFC/PPy-Ag) have been synthesized for the first time via in situ one-step chemical polymerization and applied in potential biomedical applications. Incorporation of NFC into PPy
Andrey Massarsky et al.
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 159, 10-21 (2013-10-08)
Silver nanoparticles (AgNPs) are present in a multitude of consumer and medical products; however, the toxicity of AgNPs is not fully understood. This research aimed to elucidate the relationship between AgNP cytotoxicity and oxidative stress and damage in rainbow trout
Benjamin P Colman et al.
PloS one, 8(2), e57189-e57189 (2013-03-08)
A large fraction of engineered nanomaterials in consumer and commercial products will reach natural ecosystems. To date, research on the biological impacts of environmental nanomaterial exposures has largely focused on high-concentration exposures in mechanistic lab studies with single strains of
Perrine Cheviron et al.
Carbohydrate polymers, 134, 635-645 (2015-10-03)
The present work reports a strategy involving the preparation of nanostructured starch based film containing silver nanoparticles (AgNPs) using a completely green chemistry process. The nanocomposite films were prepared by solution cast process. The AgNPs were in situ generated inside
Laura E Valenti et al.
Colloids and surfaces. B, Biointerfaces, 132, 71-77 (2015-06-30)
Silver-coated orthopedic implants and silver composite materials have been proposed to produce local biocidal activity at low dose to reduce post-surgery infection that remains one of the major contributions to the patient morbidity. This work presents the synthesis combined with
Hyen-Wook Kang et al.
Journal of nanoscience and nanotechnology, 13(5), 3550-3553 (2013-07-19)
We fabricated a polymer-metal combined atomic force microscopy (AFM) probe by two steps; a polymeric resin was used at first step, and a metal-ion was used at second step which needs more fabricating time than the resin. At first step
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