نتایج جستجو برای: zinc oxide nano particles

تعداد نتایج: 428694  

Journal: :iranian chemical communication 2015
narges ajami ali ehsani ferydon babaei ashraf heidaripour

optical modeling was applied for obtaining absorbance spectra and band gap values for different morphology of zno semiconductor. in optical modeling, the relative permittivity scalars of zinc oxide coral like nanorods were calculated using the bruggeman homogenization formalism. zno nano rods (zonrs) as a nucleus layer were fabricated on the indium tin oxide (ito) by chronoamperometry (ca) in a...

In this study, a multi nanosensor was fabricated for the simultaneous detection of carbon dioxide, methane, ethanol, and ammonia gases, and its electrochemical response to various concentrations of these gases were investigated. In order to fabricate this multi nanosensor, in the first phase, the Graphene-Oxide/Polyaniline (GO/PANI) nanocomposite was synthesized. Chemical ...

2016

This study reports on the synthesis of zinc oxide (ZnO) nanostructures and examines the performance of polymer nanocomposites fabricated using ZnO dispersed in polymer host matrices. The polymer matrix used was an epoxy based thermosetting polymer known as Diglycidyl Ether of Bisphenol-A(DGEBA). Zinc oxide nano particles were prepared by precipitation method using Poly Vinyl Alcohol as the surf...

2016

This study reports on the synthesis of zinc oxide (ZnO) nanostructures and examines the performance of polymer nanocomposites fabricated using ZnO dispersed in polymer host matrices. The polymer matrix used was an epoxy based thermosetting polymer known as Diglycidyl Ether of Bisphenol-A(DGEBA). Zinc oxide nano particles were prepared by precipitation method using Poly Vinyl Alcohol as the surf...

2016

The objective of this study was to quantify the influence of zinc oxide nanoparticles (nanoZnO) on the water repellency and dimensional stability of beech wood. Beech wood blocks were treated with a nano-ZnO solution at four treatment levels (0, 10,000, 20,000, and 40,000 ppm) using a modified dip method. Also, a thermal treatment was performed at 60 and 120°C. After conditioning the samples, w...

2012
Jehad M. Yousef Enas N. Danial

In the emerging issue of increased multi-resistant properties in food borne pathogens, zinc oxide (ZnO) and nano-particle zinc oxide (nano-ZnO) are being used increasingly as antimicrobial agents. Thus, the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of nano-ZnO towards pathogens microbes Bacillus subtilus NRRL B-543, Bacillus megaterium ATCC 25848, Staph...

Mahsa Tabari, Mahya Shafiee Nasab

Objective(s): Since microbial contamination can reduce the shelf life of the foodstuff and there is a potential for the growth of some pathogen microorganisms, films containing antimicrobial agents were produced, which are also biodegradable. In this study, the effect of 1, 3 and 5% nano-zinc oxide on antimicrobial properties and permeability of poly lactic acid film was invest...

Journal: :زیست شناسی جانوری تجربی 0
کاظم پریور استاد گروه زیست شناسی جانوری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران نسیم حیاتی رودباری استادیار گروه زیست شناسی جانوری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران علیرضا بدیعی دانشیار دانشکده شیمی، دانشگاه تهران رقیه تقی زاده حاجی آقا دانشجوی کارشناسی ارشد زیست شناسی جانوری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران

abstract increase in the use of nano zinc oxide in medicine, manufacturing cosmetic products and research, have raised the questions about their toxicity. zinc has direct role in growth, maturation and ovulation through influence on production of estradiol and progesterone. in this study the effects of nano zinc oxide on oogenesis of adult nmri mouse strain have been investigated. the adult fem...

Dorost ghoal M Kesmati M Malekshahi Nia H Najafzadeh Varzi H Teymuri Zamaneh H

Background: Physical activity has a range of effects on male reproductive function depending upon the intensity and duration of the activity. Materials and Methods: In order to investigate the protective effects of nano zinc oxide on endurance exercise induced testicular oxidative stress, 30 adult male Wistar rats were randomly divided into the following groups: control group (n=10); exercised ...

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