نتایج جستجو برای: lead ii oxide nanoparticles

تعداد نتایج: 1149634  

Journal: :journal of particle science & technology 2015
mehrdad manteghain faeze tari behrooz bozorgi

this paper focused on a simple approach for synthesis of molybdenum oxide (moo3) nanoparticles and reports a facile route for synthesis of such nanoparticles, using microwave irradiation as a homogenous and powerful source of heating, using ethylene glycol as the solvent and heating medium. for more investigations, besides microwave heating, the obtained solutions were also treated by conventio...

2013
D. Barbir

The aim of this work was to investigate the effect of the addition of lead(II) oxide on hydration heat and specific conductivity of a CEM I Portland cement. The heat released during hydration was determined by differential microcalorimetry up to 48 hours of hydration and the specific conductivity by a digital conductometer. Thermogravimetric analysis was employed in the characterization of the ...

2017
Jing Liu Yong Zhao Wei Ge Pengfei Zhang Xinqi Liu Weidong Zhang Yanan Hao Shuai Yu Lan Li Meiqiang Chu Lingjiang Min Hongfu Zhang Wei Shen

The impacts of zinc oxide nanoparticles on embryonic development following oocyte stage exposure are unknown and the underlying mechanisms are sparsely understood. In the current investigation, intact nanoparticles were detected in ovarian tissue in vivo and cultured cells in vitro under zinc oxide nanoparticles treatment. Zinc oxide nanoparticles exposure during the oocyte stage inhibited embr...

2017
Hala F. Mohammed Mohammed M. Ibrahim Abd El-Fattah H. Abd El-Fattah Thanaa I. Shalaby

INTRODUCTION: Antibacterial properties of nanoparticles have recently come into the spotlight in endodontic therapy. OBJECTIVES: Evaluation of the antimicrobial efficacy of zinc oxide based sealer incorporated with silver and zinc oxide nanoparticles compared with simple zinc oxide sealer against Enterococcus faecalis. MATERIALS AND METHODS: The study was conducted on 60 human extracted mandibu...

Journal: :iranian journal of toxicology 0
هما محسنی کوچ اصفهانی homa mohseni kouchesfehani department of biological sciences, kharazmi university, tehran, iran. سحر کیانی sahar kiani department of stem cells and developmental biology, cell science research center, royan institute for stem cell biology and technology, acecr, tehran, iran. علی اکبر رستمی ali akbar rostami msc student in developmental biology sciences, kharazmi university, tehran, iran. رحمان فاخری rahman fakheri bsc in biology, reproductive biomedicine research center, royan institute for animal biotechnology, acecr, tehran, iran.

background: despite the wide range of applications, there is a serious lack of information on the impact of the nanoparticles on human health and the environment. the present study was done to determine the range of dangerous concentrations of iron oxide nanoparticle and their effects on mouse embryonic stem cells. methods: iron oxide nanoparticles with less than 20 nanometers diameter were enc...

2011
Chien-Chang Shen Hong-Jen Liang Chia-Chi Wang Mei-Hsiu Liao Tong-Rong Jan

BACKGROUND Accumulating evidence indicates that iron oxide nanoparticles modulate immune responses, and induce oxidative stress in macrophages. It was recently reported that iron oxide nanoparticles attenuated antigen-specific immunity in vivo, though the underlying mechanism remains elusive. The present study investigates the direct effect of iron oxide nanoparticles on antigen-specific cytoki...

2017
Dorina-Elena Coricovac Elena-Alina Moacă Iulia Pinzaru Cosmin Cîtu Codruta Soica Ciprian-Valentin Mihali Cornelia Păcurariu Victor A. Tutelyan Aristidis Tsatsakis Cristina-Adriana Dehelean

The use of magnetic iron oxide nanoparticles in biomedicine has evolved intensely in the recent years due to the multiple applications of these nanomaterials, mainly in domains like cancer. The aim of the present study was: (i) to develop biocompatible colloidal suspensions based on magnetic iron oxide nanoparticles as future theranostic tools for skin pathology and (ii) to test their effects i...

2013
R. MANIGANDAN K. GIRIBABU R. SURESH V. NARAYANAN

Cobalt oxide (Co3O4) nanoparticles were successfully prepared by thermal decomposition of cobalt hydroxide synthesized from cobalt acetate, ammonium hydroxide and 10% glycerol. The cobalt oxide nanoparticles calcined at 450 °C were characterized by using XRD. The XRD confirms the crystallinity and crystal structure of the sample. It also shows that the diffraction peak are broadened which revea...

Objective(s): Nanoparticles (NPs) are particles with the size range approximately from 1 to 100 nanometers that are made in different shapes. Nanotechnology is an emerging technology that expected to open some new opportunities in order to destroy and control of microorganisms using of materials and systems at the scale of the atom. Echinococcus granulosus is the agent of cystic echinococcosis ...

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