نتایج جستجو برای: silver

تعداد نتایج: 45561  

2012
Manel Abouda-Lachiheb Nesma Nafie Mongi Bouaicha

It was reported that during silicon etching, silver was subjected to have a controversial role. Some researchers debate that silver protects silicon, and, at the same time, other ones confirm that silver catalyzes silicon underneath. In this paper, we give experimental results arguing the dual role that silver has during the formation of silicon nanostructures. We give a proof that the role of ...

Journal: :مجله دانشگاه علوم پزشکی گیلان 0
حمید زینلی نژاد h zeinali nezhad استادیار گروه جراحی- دانشگاه علوم پزشکی کرمان محمد آرش رمضانی ma ramzani پزشک عمومی محمود رضا دهقانی mr dehghani پزشک عمومی محسن گرگانی نژاد مشیزی m gorgani neghad moshizi پزشک عمومی

introduction: infection is the most common complication of burn and one of the most important causes of mortality and morbidity in burned patients. topical antibiotics have important role in prevention and treatment of infection and reduction of mortality in burned patients. increases of use of antibiotics cause microbial resistance. methods: to determine microbial resistance to three topical a...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1996
fereydoon milani nejad siranoush sharzad a. bagher zadeh

oxidation of ethylene to ethylene oxide over silver catalyst and selenium modified catalyst has been studied by continuous flow and pulse techniques over the temperature range of 230-280 °c. the results are discussed in terms of reaction mechanisms proposed by others, rejecting mechanisms which involve peroxide formation. it has been shown that not only selectivity towards ethylene oxide produc...

Journal: :nanomedicine journal 0
k. khanra department of biotechnology, panskura banamali college; east midnapore; west bengal; india s. panja department of biotechnology, panskura banamali college; east midnapore; west bengal; india i. choudhuri department of biotechnology, panskura banamali college; east midnapore; west bengal; india a. chakraborty radiation biology division,ugc-dae csr, kolkata centre, sector iii, lb-8bidhan nagar n. bhattacharyya department of biotechnology, panskura banamali college; east midnapore; west bengal; india

objective(s): for the development of reliable, ecofriendly, less expensive process for the synthesis of silver nanoparticles and to evaluate the bactericidal, and cytotoxicity properties of silver nanoparticles synthesized from root extract of croton bonplandianum, baill. materials and methods: the synthesis of silver nanoparticles by plant part of croton bonplandianum was carried out.  the for...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2003
Chris D Geddes Alexandr Parfenov David Roll Jiyu Fang Joseph R Lakowicz

We describe two reagentless methods of silver deposition for metal-enhanced fluorescence. Silver was deposited on glass positioned between two silver electrodes with a constant current in pure water. Illumination of the glass between the electrodes resulted in localized silver deposition. Alternatively, silver was deposited on an Indium Tin Oxide cathode, with a silver electrode as the anode. B...

Journal: :Journal of the American Chemical Society 2010
Sonali Garg Haixiang Gao Young-Hyuk Joo Damon A Parrish Yangen Huang Jean'ne M Shreeve

The first silver-FOX, silver-ammonia-FOX, and silver-amine-FOX compounds were synthesized by the reactions of silver nitrate with K-FOX or guanidine-FOX in water, aqueous ammonia, and amines, respectively. The crystal structure of silver-ammonia-FOX exhibits unique covalent bonding behavior, which is supported by NBO calculations.

Journal: :Applied and environmental microbiology 2009
Salome Egger Rainer P Lehmann Murray J Height Martin J Loessner Markus Schuppler

Nanotechnology enables development and production of novel silver-based composite materials. We used in vitro tests to demonstrate the antimicrobial activity of a silver-silica nanocomposite compared to the activities of conventional materials, such as silver nitrate and silver zeolite. A silver-silica-containing polystyrene material was manufactured and shown to possess strong antimicrobial pr...

2016
V. N. GLUSHkO

The silver salts of fatty acids were studied as precursors for the preparation of colloidal dispersions of silver nanoparticles and UHMWPE (ultra-high-molecular-weight polyethylene) composite with silver nanoparticles, as well as the composition, the spectra and SEM (scanning electron microscopy) results. keywords: Silver laurate, silver palmitate, ascorbic acid, differential scanning spectrosc...

2012
Liming Xu Xuefei Li Taro Takemura Nobutaka Hanagata Gang Wu Laisheng Lee Chou

BACKGROUND Since silver-nanoparticles (NPs) possess an antibacterial activity, they were commonly used in medical products and devices, food storage materials, cosmetics, various health care products, and industrial products. Various silver-NP based medical devices are available for clinical uses, such as silver-NP based dressing and silver-NP based hydrogel (silver-NP-hydrogel) for medical app...

2007
Justine R. A. Cottam Peter J. Steel

X-Ray crystal structures are reported for five silver(I) complexes of four monoterpenoid alkenes. Discrete mononuclear complexes of the chiral alkenes (1S)-(-)-α-pinene and (1S)(-)-β-pinene with silver perchlorate and silver hexafluorophosphate are described. The achiral diene γ-terpinene forms a discrete mononuclear adduct with silver hexafluorophosphate and a two-dimensional polymeric network...

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