نتایج جستجو برای: 1 and silver nanoparticles with concentrationsof 5

تعداد نتایج: 18885093  

Biological synthesis of metallic nanoparticles is considered as a fast, eco-friendly, affordable and easily scalable technology. Also, the nanoparticles produced by plants are very stable. In this study, the focus is on the synthesis of silver nanoparticles using extract of eryngium campestre. The effective parameters such as concentration of silver nitrate, pH, temperature and time, size and m...

Journal: :nanomedicine journal 0
bardia varastehmoradi department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) reza davoodi iran nanotechnology initiative council, tehran, iran eswarapriya balu department of biotechnology, st. michael college of engineering and technology, kalayarkoil, india jegatheesan kalirajan department of biotechnology, st. michael college of engineering and technology, kalayarkoil, india bijan zare department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) ahmad reza shahverdi department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

objective(s):electromagnetic radiations which have lethal effects on the living cells are currently also considered as a disinfective physical agent.   materials and methods: in this investigation, silver nanoparticles were applied to enhance the lethal action of low powers (100 and 180 w) of 2450 mhz electromagnetic radiation especially against escherichia coli atcc 8739. silver nanoparticles ...

Journal: :nanomedicine journal 0
maryam moazeni invasive fungi research centre, department of medical mycology & parasitology, school of medicine,mazandaran, university of medical sciences, sari, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مازندران (mazandaran university of medical sciences) ahmad reza shahverdi department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehranuniversity of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mojtaba nabili invasive fungi research centre, department of medical mycology & parasitology, school of medicine,mazandaran, university of medical sciences, sari, iran, social security organization, golestan, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مازندران (mazandaran university of medical sciences) fatemeh noorbakhsh department of biology, islamic azad university, varamin-pishva branch, varamin, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) sassan rezaie department of medical biotechnology, school of advanced technologies in medicine, tehran university ofmedical sciences, tehran, iran department of medical mycology & parasitology, school of public health, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

objective(s): the enzymatic activity of fungi has recently inspired the scientists with re-explore the fungi as potential biofactories rather than the causing agents of humans and plants infections. in very recent years, fungi are considered as worthy, applicable and available candidates for synthesis of smaller gold, silver and other nano-sized particles.  materials and methods: a standard str...

2016
K. M. APARNA MANI C. VASANTHI DARLING CHELLATHAI DAVID

Phytostabilized silver nanoparticles are being widely studied for its various pharmacological properties. In the present study silver nanoparticles synthesized using Black pepper extract was evaluated for its acute toxicity and also for its anti inflammatory activity in carrageenan induced paw edema in rats. The anti inflammatory effect was also compared against the commercial silver nanopartic...

فراست, مهشید, گلزان, سید مقصود, حسن‌زاده, علی,

In this study, we propose a simple approach to prepare silver nanoparticles. The silver nanoparticles were synthesized by chemical reduction of AgNO3 in the presence of tetrabutyl titanate (C16H36O4Ti; TNBT) and metallic tin powder as reducing agent in water at room temperature. The structure and average grain size of prepared particles were characterized by transmission electron microscope (TE...

Ahmad R. Shahverdi, Fatemeh Noorbakhsh, Maryam Moazeni, Niloofar Rashidi, Sassan Rezaie,

Background: To develop a new green approach for biosynthesis of silver nanoparticles, myconanotechnology has been represented as a novel field of study in nanotechnology. In this study, we have reported the extracellular synthesis of highly stable silver nanoparticles using three species of dermatophytes: Trichophyton rubrum, Trichophyton mentagrophytes and Microsporum canis. Methods: Clinical ...

2012
Katrine Bilberg Mads Bruun Hovgaard Flemming Besenbacher Erik Baatrup

The influence of water chemistry on characterised polyvinyl pyrrolidone- (PVP-) coated silver nanoparticles (81 nm) was investigated. NaCl solution series of 100-800 mg L(-1) lead to initial and temporal increase in nanoparticles size, but agglomeration was limited. pH variation (5-8) had only minor influence on the hydrodynamic particle size. Acute toxicity of nanosivler to zebrafish (Danio re...

Journal: :nanomedicine research journal 0
nooshin amini department of nanochemistry, faculty of pharmaceutical chemistry, pharmaceutical sciences branch, islamic azad university, tehran, iran (iaups) gholamreza amin department of pharmacognosy, faculty of pharmacy, pharmaceutical sciences branch, islamic azad university, tehran, iran (iaups) zahra jafari azar department of pharmaceutics, faculty of pharmacy, pharmaceutical sciences branch, islamic azad university, tehran, iran (iaups)

objective(s): nowadays, nanoparticles bio production, considering their performance in medicine and biological science, is increasing. green synthesis of metal nanoparticles using organisms has emerged as a nontoxic and ecofriendly method for synthesis of metal nanoparticles the objectives of this study were the production of silver nanoparticles using avena sativa l. extract and optimization o...

Journal: :international journal of nano dimension 0
biuck habibi department of chemistry, faculty of science, azarbaijan shahid madani university, tabriz, 53714-161, iran houriyeh hadilou department of chemistry, faculty of science, azarbaijan shahid madani university, tabriz, 53714-161, iran saeed mollaei department of chemistry, faculty of science, azarbaijan shahid madani university, tabriz, 53714-161, iran alireza yazdinezhad department of pharmacognosy, faculty of pharmacy, zanjan university of medical sciences, zanjan, 45139-56184, iran

nowadays, green chemistry and its advantages are generating interest of researchers toward ecofriendly biosynthesis of the metallic nanoparticles. in this research, a rapid, simple and green method was developed for the synthesis of silver nanoparticles using aqueous extract of prangos ferulaceae leaves. the synthesized silver nanoparticles were characterized by uv-vis spectroscopy, scanning el...

Journal: :jundishapur journal of microbiology 0
hamed alizadeh young researchers and elite club, zanjan branch, islamic azad university, zanjan, ir iran mojtaba salouti biology research center, zanjan branch, islamic azad university, zanjan, ir iran; biology research center, zanjan branch, islamic azad university, moallem st., etemadieh, zanjan, ir iran. tel/fax: +98-2414224024 reza shapouri biology research center, zanjan branch, islamic azad university, zanjan, ir iran

conclusions: the results showed that silver nanoparticles have an antimicrobial effect against intramacrophage b. abortus 544. results: the well diffusion agar study showed that silver nanoparticles have an antimicrobial effect on b. abortus 544. the mic and mbc of silver nanoparticles against b. abortus 544 were; 6 ppm and 8 ppm, respectively. the silver nanoparticles showed antibacterial effe...

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