نتایج جستجو برای: mgoh2 nanoparticles

تعداد نتایج: 107073  

2011
Yu-Lan Hu Wang Qi Feng Han Jian-Zhong Shao Jian-Qing Gao

BACKGROUND Although there are a number of reports regarding the toxicity evaluation of inorganic nanoparticles, knowledge on biodegradable nanomaterials, which have always been considered safe, is still limited. For example, the toxicity of chitosan nanoparticles, one of the most widely used drug/gene delivery vehicles, is largely unknown. In the present study, the zebrafish model was used for ...

Journal: :Molecules 2016
Mokone Mmola Marilize Le Roes-Hill Kim Durrell John J Bolton Nicole Sibuyi Mervin E Meyer Denzil R Beukes Edith Antunes

A detailed, methodical approach was used to synthesise silver and gold nanoparticles using two differently prepared aqueous extracts of the brown algae Sargassum incisifolium. The efficiency of the extracts in producing nanoparticles were compared to commercially available brown algal fucoidans, a major constituent of brown algal aqueous extracts. The nanoparticles were characterised using TEM,...

2017
Takako Oyabu Toshihiko Myojo Byeong-Woo Lee Takami Okada Hiroto Izumi Yukiko Yoshiura Taisuke Tomonaga Yun-Shan Li Kazuaki Kawai Manabu Shimada Masaru Kubo Kazuhiro Yamamoto Kenji Kawaguchi Takeshi Sasaki Yasuo Morimoto

The hazards of various types of nanoparticles with high functionality have not been fully assessed. We investigated the usefulness of biopersistence as a hazard indicator of nanoparticles by performing inhalation and intratracheal instillation studies and comparing the biopersistence of two nanoparticles with different toxicities: NiO and TiO₂ nanoparticles with high and low toxicity among nano...

2015
Lirija Alili Swetlana Chapiro Gernot U. Marten Annette M. Schmidt Klaus Zanger Peter Brenneisen

Iron oxide (Fe3O4) nanoparticles have been used in many biomedical approaches. The toxicity of Fe3O4 nanoparticles on mammalian cells was published recently. Though, little is known about the viability of human cells after treatment with Fe3O4 nanoparticles. Herein, we examined the toxicity, production of reactive oxygen species, and invasive capacity after treatment of human dermal fibroblasts...

2016
Xin Wang Huang Tang Chongzhi Wang Jialiang Zhang Wei Wu Xiqun Jiang

The phenylboronic acid-conjugated chitosan nanoparticles were prepared by particle surface modification. The size, zeta potential and morphology of the nanoparticles were characterized by dynamic light scattering, zeta potential measurement and transmission electron microscopy. The cellular uptake, tumor penetration, biodistribution and antitumor activity of the nanoparticles were evaluated by ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...

Journal: :Chemical communications 2009
Xiwen Zhang Yongfang Yang Jia Tian Hanying Zhao

Polystyrene (PS) with pendant gold nanoparticles and PS-coated Fe(3)O(4) nanoparticles self-assemble into vesicle structures with PS and PS-coated Fe(3)O(4) nanoparticles in the wall and gold nanoparticles in the shell.

Journal: :Chemical communications 2012
Zengjian An Masahiko Yamaguchi

Chiral recognition was observed in the interactions of gold nanoparticles grafted with (±)-, (M)-, and (P)-helicenethiol. Although the nanoparticles contain equal enantiomeric excess, a 1:1 mixture of (M)- and (P)-nanoparticles aggregated more rapidly in solution than (±)-nanoparticles.

Journal: :international journal of advanced biological and biomedical research 0
mahin rigi department of fisheries, hamoun international wetland research institute, university of zabol, zabol, iran.

recently, the effects of antimicrobial activity of silver nanoparticles was considered by researcher because of bacterial resistance to antimicrobial agents in chemical.the aim of this study was to evaluate the antimicrobial activity of the gold nanoparticles on escherichia coli. gold nanoparticles are chemically synthesized. standard strain of e. coli was cultured in a nutrient broth. minimum ...

2015
Nidhi Joshi Johan Wolan

............................................................................................................................ vii Chapter 1: Introduction ........................................................................................................1 1.1 Metal Nanoparticles ...........................................................................................1 1.2 Gold Nanoparticle...

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