نتایج جستجو برای: silver nps

تعداد نتایج: 55731  

Journal: :international journal of molecular and clinical microbiology 0
babak sadeghi department of chemistry, tonekabon branch, islamic azad university, tonekabon, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی تنکابن (islamic azad university of tonekabon)

biogenic reduction of silver ion to base metal is quite rapid, readily conducted at room temperature and pressure, and easily scaled up. synthesis mediated by plant extracts is environmentally benign. the objective of this study was to synthesis of silver nanoparticles (ag-nps) using leaves aqueous extract of nasturtium officinale r. br. (no) and its antibacterial activity. x-ray diffraction (x...

2014
Angela Ivask Imbi Kurvet Kaja Kasemets Irina Blinova Villem Aruoja Sandra Suppi Heiki Vija Aleksandr Käkinen Tiina Titma Margit Heinlaan Meeri Visnapuu Dagmar Koller Vambola Kisand Anne Kahru

The concept of nanotechnologies is based on size-dependent properties of particles in the 1-100 nm range. However, the relation between the particle size and biological effects is still unclear. The aim of the current paper was to generate and analyse a homogenous set of experimental toxicity data on Ag nanoparticles (Ag NPs) of similar coating (citrate) but of 5 different primary sizes (10, 20...

Journal: :research in pharmaceutical sciences 0

silver nanoparticles (nps) have been the subjects of researchers because of their unique properties ( e.g., size and shape depending optical, antimicrobial, and electrical properties). a variety of preparation techniques have been reported for the synthesis of silver nps; notable examples include, laser ablation, gamma irradiation, electron irradiation, chemical reduction, photochemical methods...

2016
Yun Ok Kang Ju-Young Jung Donghwan Cho Oh Hyeong Kwon Ja Young Cheon Won Ho Park

Recently, numerous compounds have been studied in order to develop antibacterial agents, which can prevent colonized wounds from infection, and assist the wound healing. For this purpose, novel silver chloride nanoparticles stabilized with chitosan oligomer (CHI-AgCl NPs) were synthesized to investigate the influence of antibacterial chitosan oligomer (CHI) exerted by the silver chloride nanopa...

2017
Oluyomi Stephen Adeyemi Yuho Murata Tatsuki Sugi Kentaro Kato

This study evaluated the anti-Toxoplasma gondii potential of gold, silver, and platinum nanoparticles (NPs). Inorganic NPs (0.01-1,000 µg/mL) were screened for antiparasitic activity. The NPs caused >90% inhibition of T. gondii growth with EC50 values of ≤7, ≤1, and ≤100 µg/mL for gold, silver, and platinum NPs, respectively. The NPs showed no host cell cytotoxicity at the effective anti-T. gon...

Silver-cobalt nanoparticles are used in medicine. In this study, the effects of silver-cobalt nanoparticles on functional tests and liver tissue changes in adult male rats were investigated. 28 adult male Wistar rats weighing 180-220 g were divided into 4 groups of 7. Control group, Experimental group1 received 25mg / kg of silver-cobalt nanoparticles (AgCo NPs) in which silver nanoparticle (Ag...

Journal: :Molecules 2014
Javad Baharara Farideh Namvar Tayebe Ramezani Nasrin Hosseini Rosfarizan Mohamad

Silver nanoparticles display unique physical and biological properties which have attracted intensive research interest because of their important medical applications. In this study silver nanoparticles (Ab.Ag-NPs) were synthesized for biomedical applications using a completely green biosynthetic method using Achillea biebersteinii flowers extract. The structure and properties of Ab.Ag-NPs wer...

2016
Ezat Hamidi-Asl Freddy Dardenne Sanaz Pilehvar Ronny Blust Karolien De Wael

In this article, it is shown that the efficiency of an electrochemical aptasensing device is influenced by the use of different nanoparticles (NPs) such as gold nanoparticles (Au), silver nanoparticles (Ag), hollow gold nanospheres (HGN), hollow silver nanospheres (HSN), silver–gold core shell (Ag@Au), gold–silver core shell (Au@Ag), and silver–gold alloy nanoparticles (Ag/Au). Among these nano...

Journal: :avicenna journal of medical biotechnology 0

studies on biomedical applications of nanoparticles are growing with a rapid pace. in medicine, nanoparticles may be the solution for multi-drug-resistance which is still a major drawback in chemotherapy of cancer. in the present study, we investigated the potential cytotoxic effect of silver nanoparticles (ag nps) and silver ions (ag+) in both parent and tamoxifen-resistant t47d cells in prese...

Journal: :Environmental science & technology 2012
Clément Levard E Matt Hotze Gregory V Lowry Gordon E Brown

Silver nanoparticles (Ag-NPs) readily transform in the environment, which modifies their properties and alters their transport, fate, and toxicity. It is essential to consider such transformations when assessing the potential environmental impact of Ag-NPs. This review discusses the major transformation processes of Ag-NPs in various aqueous environments, particularly transformations of the met...

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