نتایج جستجو برای: cuo nanoparticles

تعداد نتایج: 110282  

Farshchi , P., Jaafarzadeh, N., Jamili , Sh., Khoshnood , R., Taghavi, L.,

The brine shrimp, Artemia spp., is widely used in ecotoxicological research as a biological index. In the present study, aquatic stability and acute toxic effects of TiO2, CuO and ZnO nanoparticles (NPs) on Artemia franciscana were investigated. Acute exposure was conducted in sea water with different concentrations of selected nanoparticles at 24h, 48h, 72h and 96h. The mortality rate of A. fr...

2012
Christian O. Dimkpa Joan E. McLean Drew E. Latta Eliana Manangón David W. Britt William P. Johnson Maxim I. Boyanov Anne J. Anderson Britt A. J. Anderson

Metal oxide nanoparticles (NPs) are reported to impact plant growth in hydroponic systems. This study describes the impact of commercial CuO (\50 nm) and ZnO (\100 nm) NPs on wheat (Triticum aestivum) grown in a solid matrix, sand. The NPs contained both metallic and non-metallic impurities to different extents. Dynamic light scattering and atomic force microscopy (AFM) assessments confirmed ag...

Journal: : 2023

Nanostructures of metal oxides CuO, and TiO2 were prepared by the hydrothermal method. Also, CuO/TiO2 nanocomposites technique using an equal ratio 1:1 The properties compounds investigated through Field Emission Scanning Electron Microscopy FE-SEM, Transmission TEM, X-Ray Diffraction. images FE-SEM have confirmed that , nanoparticles structured as Nanoparticles, Spherical, CuO/ which mixed in ...

Journal: :caspian journal of chemistry 2013
jahan bakhsh raoof reza ojani fakhrosadat jamali sayed reza hosseini

metallic copper nanoparticles modified glassy carbon electrode is fabricated by reduction of cuso4 in the presence of cetyltrimethylammonium bromide (ctab) through potentiostatic method. as-prepared nanoparticles are characterized by scanning electron microscopy and electrochemical methods. copper oxide modified glassy carbon electrode (nano-cuo/mgce) is prepared using consecutive potential sca...

2016
Sunita Rao Gyan Singh Shekhawat

This study elaborates the consequences of oxidative stress caused by copper oxide (CuO) and titanium dioxide (TiO2) nanoparticles (NPs) in Brassica juncea. Effect of these two NPs on plant physiology, reactive oxygen scavenging enzyme system (ascorbate peroxidase, catalase, superoxide dismutase), proline content and lipid peroxidation has been estimated in leaves as well as root tissues. Bioacc...

Journal: :Nanoscale 2012
Wei Tian Chunyi Zhi Tianyou Zhai Xi Wang Meiyong Liao Songlin Li Shimou Chen Dmitri Golberg Yoshio Bando

Although there has been significant progress in the fabrication and performance optimization of 1-D nanostructure-based deep-ultraviolet photodetectors, it is still a challenge to develop an effective device with high performance characteristics, such as high photocurrent-dark current ratio and high quantum efficiency. Herein, an efficient and simple method to fabricate high performance CuO nan...

2018
Eman Alzahrani

Fast Green (FCF) dye is commonly used in both cytology and histology applications. Previous studies have found that it can cause mutagenic and tumorigenic effects in experimental human and animal populations. It can also be a source of skin, eye, respiratory, and digestive irritation. The purpose of this study was to examine the use of thin film membranes to degrade FCF. A thin film membrane of...

Journal: :journal of dental biomaterials 0
motahareh amiri department of operative dentistry, shahid sadoughi university of medical sciences and health services, yazd, iran zahra etemadifar department of biology, university of isfahan, isfahan, iran alireza daneshkazemi department of operative dentistry, shahid sadoughi university of medical sciences and health services, yazd, iran mehrnoosh nateghi school of dentistry, shahid sadoughi university of medical sciences and health services, yazd, iran.

statement of problem: acid producing bacteria including streptococcus mutans and lactobacilli cause tooth demineralization and lead to tooth decay. also, oral colonization of the species of candida has been reported in many studies that are resistant to antifungal agents. objectives: in this study, antibacterial and antifungal effects of nano-cuo were studied against some oral bacteria and yeas...

Journal: :Journal of Cluster Science 2022

Abstract This paper reports the preparation of copper(I) oxide nanoparticles deposited on yttrium and copper(II) in presence acerola white willow extracts. Through use natural compounds, it was possible to modify surface Y 2 O 3 CuO carriers allowing Cu be a greater extent, thus improving antibacterial properties materials. nanoparticles, by being carrier, enable an increase contact with microo...

2017
Fazli Wahid Cheng Zhong Hai-Song Wang Xiao-Hui Hu Li-Qiang Chu

Recently, the rapid emergence of antibiotic-resistant pathogens has caused a serious health problem. Scientists respond to the threat by developing new antimicrobial materials to prevent or control infections caused by these pathogens. Polymer-based nanocomposite hydrogels are versatile materials as an alternative to conventional antimicrobial agents. Cross-linking of polymeric materials by met...

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