نتایج جستجو برای: silver

تعداد نتایج: 45561  

Journal: :international journal of nano dimension 0
b. khodashenas department of chemical engineering, shahrood branch, islamic azad university, shahrood, iran. h. r. ghorbani department of chemical engineering, qaemshahr branch, islamic azad university, qaemshahr, iran.

developing reliable and eco-friendly processes for the synthesis of metallic nanoparticles is an essential step in the field of application of nanotechnology .using natural factories such as biological systems is a way of developing such processes. nowadays, the synthesis of silver nanoparticles is very common due to its numerous applications in different fields. the synthesis of these nanopart...

Journal: :Nanoscale 2014
Mariana Vignoni Hasitha de Alwis Weerasekera Madeline J Simpson Jaywant Phopase Thien-Fah Mah May Griffith Emilio I Alarcon Juan C Scaiano

Capping silver nanoparticles with LL37 peptide eradicates the antiproliferative effect of silver on primary skin cells, but retains the bactericidal properties of silver nanoparticles with activities comparable to silver nitrate or silver sulfadiazine. In addition, LL37 capped silver nanoparticles have anti-biofilm formation activity.

Journal: :Aquatic toxicology 2007
Adalto Bianchini Richard C Playle Chris M Wood Patrick J Walsh

The present study was carried out to examine possible differential silver distribution among several tissues of three marine invertebrate species: the shrimp Penaeus duorarum, the sea hare Aplysia californica, and the sea urchin Diadema antillarum. Animals were exposed to sub-lethal concentrations of silver (1 or 10 microg/L) in seawater for 48 h. In gill-breathing species (shrimp and sea hare)...

P.K. Praseetha, R.P Dhanya S. Abdeen S. Geo S. Sukanya

Silver is composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. Silver nanoparticles have been a potent antibacterial, antifungal, anti-viral and anti-inflammatory agent. A simple, eco-friendly, inexpensive biosynthetic method was employed to synthesize silver nanoparticles.  The present study aimed at the comparative study of silver nanopartic...

2014
Nelson Durán Raphael Cuevas Livia Cordi Olga Rubilar Maria Cristina Diez

In the present study, semi-purified laccase from Trametes versicolor was applied for the synthesis of silver nanoparticles, and the properties of the produced nanoparticles were characterized. All of the analyses of the spectra indicated silver nanoparticle formation. A complete characterization of the silver nanoparticles showed that a complex of silver nanoparticles and silver ions was produc...

Journal: :Chemosphere 2012
C Lorenz L Windler N von Goetz R P Lehmann M Schuppler K Hungerbühler M Heuberger B Nowack

Silver, both in the nano as well as in other forms, is used in many applications including antimicrobial textiles. Washing of such textiles has already been identified as an important process that results in the release of silver into wastewater. This study thus investigated the release of silver from eight different commercially available silver-textiles during a washing and rinsing cycle. The...

2017
Chang Yan Dong Wen Juan Liu Rong Xiang Chi Hong Du

Objective To compare the clinical efficacy and safety of oil gauze silver dressing and silver ions dressing on diabetic ulcers in elderly outpatients. Methods Twenty-two patients with Type-2 diabetic foot ulcers were included in the study conducted at Yantai Yuhuangding Hospital between April 2013 and April 2014. At the time of enrolment they were divided into the silver ions and oil gauze si...

2013
T. Andrew Brian J. Lindsay

A number of antimicrobial silver dressings based on different substrates and silver technologies have been introduced recently. Initial in vitro testing of a new cost-effective silver dressing* showed a strong dependence between silver release and the ionic strength and organic content of the extraction solution. To answer the question if all silver dressings show similar dependence on extracti...

2012
S. Sabudin M. A. Derman I. Zainol K. Noorsal

There have been concerns raised over the treatment of acute burns with silver particles because of the potential toxicity caused by silver. As the wound heals, a membrane is formed between the silver particle and the blood, but this membrane is not impenetrable, which might lead to further silver absorption. This paper reports the in vitro cytotoxicity of silver-chitosan composites prepared as ...

2000
M. L. MERROUN E. ALONSO M. T. GONZÁLEZ-MUÑOZ Maria Teresa González-Muñoz

This paper deals with silver sorption toMyxococcus xanthus biomass. The dry biomass of this microorganism is shown to be a good sorbent for the recovery of silver present at low solution concentrations. Between initial silver concentrations of 2 and 0.05 mM, the percentage of accumulation ranges from 8.12% to 75% of the total silver present in the solution. Transmission electron microscopy stud...

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