نتایج جستجو برای: nano tio2 and yeast extract

تعداد نتایج: 16887026  

Journal: :Microelectronics Reliability 2011
Asit Kumar Gain Y. C. Chan Winco K. C. Yung

Sn–Ag–Cu composite solders reinforced with nano-sized, nonreacting, noncoarsening 1 wt% TiO2 particles were prepared by mechanically dispersing TiO2 nano-particles into Sn–Ag–Cu solder powder and the interfacial morphology of the solder and flexible BGA substrates were characterized metallographically. At their interfaces, different types of scallop-shaped intermetallic compound layers such as ...

2013
Mohd Zainizan Sahdan Nafarizal Nayan Samsul Haimi Dahlan Mahdi Ezwan Mahmoud Uda Hashim

This paper presents the optimization process in sol-gel technique to synthesize Titanium dioxide (TiO2) thin films using in-house Nano-TiO2 powder. Nano-TiO2 powder was previously synthesized in our lab from ilmenite which is a tin mining byproduct using a modified hydrothermal method. By varying the mass of Nano-TiO2 powder and acetic acid (catalyst) concentration in the sol-gel process, highl...

2011
Martin Roursgaard Keld A. Jensen Steen S. Poulsen Niels-Erik V. Jensen Lars K. Poulsen Maria Hammer Gunnar D. Nielsen Søren T. Larsen

This study investigated the acute and subchronic inflammatory effects of micrometer-size (micro-size) and nanometer-size (nano-size) particles after intratracheal (i.t.) installation in mice. The role of the type of compound, polymorphism, and size of the particles was investigated. Studied compounds were the two micro-size reference quartzes, SRM1878a and DQ12, a micro- and nano-size rutile ti...

2015
Jun Li Muhammad Shahbaz Naeem Xiuping Wang Lixin Liu Chang Chen Ni Ma Chunlei Zhang Maoteng Li

Recently nano-materials are widely used but they have shown contrasting effects on human and plant life. Keeping in view the contrasting results, the present study has evaluated plant growth response, antioxidant system activity and photosynthetic apparatus physiological and ultrastructural changes in Brassica napus L. plants grown under a wide range (0, 500, 2500, 4000 mg/l) of nano-TiO2 in a ...

2017
Xiaoliang Wang Yanyan Zhao Kristian Mølhave Hongyu Sun

Titanium dioxide (TiO2) micro and nano architectures have been intensively studied in 15 the past years because of many varied applications in environmental, energy conversion, and 16 storage fields, such as heterogeneous catalysis, dye-sensitized solar cells, lithium/sodium ion 17 batteries, lithium-sulfur (Li-S) batteries, and bio-nanotechnology, etc. Especially the surface and 18 interface s...

2017
Victoria Konstantinova Mohamed Ibrahim Stein A. Lie Eivind Salmorin Birkeland Evelyn Neppelberg Mihaela Cuida Marthinussen Daniela Elena Costea Mihaela R. Cimpan

BACKGROUND Oral cavity is a doorway for a variety of products containing titanium dioxide (TiO2 ) nanoparticles (NPs) (nano-TiO2 ) such as food additives, oral healthcare products and dental materials. Their potential to penetrate and affect normal human oral mucosa is not yet determined. OBJECTIVES To evaluate the ability of nano-TiO2 to penetrate the in vitro reconstructed normal human bucc...

Journal: :iranian journal of pathology 2010
saeed rezaei-zarchi aisha javed madiha javeed ghani safieh soufian fatemeh barzegari firouzabadi

background: and objectives:the aim of this study was to detect the antibacterial properties of 0.01, 0.5 and 1% nano-tio2 and -cdo against e. coli. materials and methods: e. coli was cultured in liquid and agar nutrient medium to evaluate the antibacterial effects of 0.01, 0.05 and 1% of both nano-tio2 and -cdo via the optical density (od) and log cfu/ml measurements. results: non-significant e...

2016
Yan Wang Changjiao Sun Xiang Zhao Bo Cui Zhanghua Zeng Anqi Wang Guoqiang Liu Haixin Cui

Nanometer-sized titanium dioxide (TiO2) is an environmentally friendly optical semiconductor material. It has wide application value in many fields due to its excellent structural, optical, and chemical properties. The photocatalytic process of nano-TiO2 converts light energy into electrical or chemical energy under mild conditions. In recent years, the study and application of nano-TiO2 in the...

2009
Linglan Ma Jinfang Zhao Jue Wang Jie Liu Yanmei Duan Huiting Liu Na Li Jingying Yan Jie Ruan Han Wang Fashui Hong

Although it is known that nano-TiO2or other nanoparticles can induce liver toxicities, the mechanisms and the molecular pathogenesis are still unclear. In this study, nano-anatase TiO2(5 nm) was injected into the abdominal cavity of ICR mice for consecutive 14 days, and the inflammatory responses of liver of mice was investigated. The results showed the obvious titanium accumulation in liver DN...

زارع, محمد, ندافی, کاظم,

Background and Aim: Specific and unique characteristics of nanoparticles may entail specific and unique hazards. In addition, they may also exhibit toxicity under certain conditions. This study was conducted to investigate the toxicity of phenol-exposed and phenol-unexposed nano-TiO2 and nano-Fe/TiO2 particles. Materials and Methods: Stock solutions of the afore-mentioned nanoparticles were pr...

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