نتایج جستجو برای: molybdenum oxide nanoparticles

تعداد نتایج: 281437  

Journal: :iranian journal of pathology 2015
mahboubeh mirhosseini fatemeh barzegari firouzabadi

background & objectives: direct addition of antimicrobial materials to food during food processing is an effective method for controlling microbial contaminants of food and extending the shelf-life of food products. objective of this research was to study the antimicrobial effect of zinc oxide (zno) nanoparticle and potential applications of zno nanoparticles in terms of controling two food...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
mahshad alaei ali morad rashidi iida bakhtiari

in comparison to the previous researches, zro2 nanoparticles with higher surface area (85 m2/g) have been synthesized in this research. the as-prepared zro2 nanoparticles by co-precipitation method were characterized with x-ray diffraction (xrd), scanning electron microscopy (sem) and transmission electron microscopy (tem). the surface area of the sample was characterized by bet method. the eff...

Journal: :transport phenomena in nano and micro scales 2015
m. farahmandjou n. golabiyan

the aluminum oxide materials are widely used in ceramics, refractories and abrasives due to their hardness, chemical inertness, high melting point, non-volatility and resistance to oxidation and corrosion. the paper describes work done on synthesis of α-alumina by using the simple, non-expensive solution combustion method using glycine as fuel.aluminum oxide (al2o3) nanoparticles were synthesiz...

Journal: :journal of nanostructures 2012
a. dehno khalaji k. jafari s. maghsodlou rad

in this paper, cuo nanoparticles  have been synthesized via solid-state thermal decomposition using copper(ii) schiff base complexes as new precursors at 600ºc under air atmosphere for 3 h. surface morphology of the products were characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffraction (xrd) and scanning electron microscopy (sem).

2007
B. B. Kar

In the present study, a hydro-refining spent catalyst with an alumina base has been taken into consideration. It is mostly used for the recovery of molybdenum. The spent catalyst constitutes around 21 pct of molybdenum as molybdenum oxide. The study has revealed that at temperature lower than 600C, it is possible to recover an appreciable quantity of molybdenum from the spent catalyst. The stat...

Journal: :Nanotechnology reviews 2022

Abstract The fractional model has been developed for the thermal flow of hybrid nanofluid due to inclined surface. investigation nanomaterial is predicted by utilizing molybdenum disulphide nanoparticles and graphene oxide nanomaterials. computations mixed convection base fluids are performed vertical oscillating plate. simulations formulated have done ρ -Laplace transform technique Caputo simu...

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...

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...

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