نتایج جستجو برای: titanium dioxide

تعداد نتایج: 124985  

Ali-Reza Sirousmehr Bahman Fazeli-Nasab, Hamide Azad

The aim of this study was to evaluate effect of foliar application of titanium dioxide nanoparticles on quantitative traits and essential oil, thymol and carvacrol percent of thyme under different levels of water stress. Factorial experiment was used based on a completely randomized design with four replications. Factors included water stress (50, 70 and 90% of field capacity) and titanium diox...

2010
Matthew Douglas Pickett

The Materials Science of Titanium Dioxide Memristors

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2008
Osamu Maeda Chie Oikawa Nobuo Shiomi Akira Toriba Kazuichi Hayakawa

Titanium dioxide was used as a photocatalyst to decompose interfering substances for a quantitative analysis of a fungicide (iprodione) in dry basil by HPLC. A quartz vial containing basil extract and titanium dioxide was irradiated with black light. The interfering substances were almost completely decomposed by 180 min of irradiation, whereas 88.3% of iprodione remained. The recovery of iprod...

2014
Yu-Chih Hu Ching-Liang Dai Cheng-Chih Hsu

A humidity microsensor integrated with a readout circuit on-a-chip fabricated using the commercial 0.18 μm CMOS (complementary metal oxide semiconductor) process was presented. The integrated sensor chip consists of a humidity sensor and a readout circuit. The humidity sensor is composed of a sensitive film and interdigitated electrodes. The sensitive film is titanium dioxide prepared by the so...

2015
Brindha Durairaj Santhoshkumar Muthu Teena Xavier

Nanoparticles synthesised by fungi have various applications and is much effective than the nanoparticles synthesised by other means. The present study is aimed to determine the antimicrobial potential of Titanium dioxide nanoparticles synthesised from the fungus, Aspergillus niger. The synthesised nanoparticles were characterised using UV spectrophotometer, SEM, and XRD. The antibacterial acti...

2017
KELVIN CHUNG TIMOTHY J. KARLE CHENG WANG MARKO LONČAR SNJEZANA TOMLJENOVIC-HANIC

Titanium dioxide is an emerging optical material, with a relatively high refractive index (n ∼ 2), which allows for high confinement of the electromagnetic field. Extensive research has been conducted on the negatively charged nitrogen vacancy centre in diamond due to its robust electronic and optical properties. In particular, its stable room-temperature photoluminescence properties have been ...

Journal: :journal of dental research, dental clinics, dental prospects 0
farzin heravi dental research center, school of d mohammad ramezani pharmaceutical and biotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran maryam poosti assistant professor, department of orthodontics, school of dentistry, islamic azad university, tehran, iran mohsen hosseini achool of dentistry, mashhad university of medical sciences, mashhad, iran arezoo shajiei farzaneh ahrari dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran

background and aims. incorporation of nano-particles to orthodontic bonding systems has been considered to prevent enamel demineralization around appliances. this study investigated cytotoxicity of transbond xt adhesive containing 1 wt% titanium dioxide (tio2) nano-particles. materials and methods. ten composite disks were prepared from each of the conventional and tio2-containg composites and ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2002
nezameddin daneshvar daryoosh salari mohammad ali behnasuady

anionic dbs surfactant can be photodegraded in a tio2 dispersion and h2o2 solution under an hg-lamp (15 w) uv illumination or solar exposure. degradation process has been monitored through cleavage of aromatic moiety. degradation of the detergent was small when the photolysis was carried out in the absence of tio2 and h2o2 and it was negligible in the absence of light. most of the curves repres...

Journal: :international journal of nano dimension 0
a. tehranchi department of mathematics, islamic azad university, south tehran branch, tehran. m. khalifeh department of mathematics, islamic azad university, south tehran branch, tehran. k. negahban dehcheshmeh islamic azad university, central tehran branch, tehran.

ag/tio2 photocatalytic nanoparticles by two methods, the sol – gel using a reducing agent and spattering was produced. crystalline phase of titanium dioxide was investigated in both. ag/tio2 peak in the sol – gel method at temperatures of 300,500 and 6000c were studied. ag/tio2 peak at different temperatures were determined using the spattering. xrd patterns of calcined this is tio2 and ag/ tio2.

Journal: :international journal of nano dimension 0
n. mastali department of chemistry, azad university, tehran north branch, tehran, iran h. bakhtiari department of chemistry, azad university, tehran north branch, tehran, iran

in this study, tio2 and zno nanofilms were prepared by sol-gel spin-coating method. nanofilms were characterized by x-ray diffraction (xrd), energy dispersive analysis of      x-ray (edx), scanning electron microscopy (sem) and field emission scanning electron microscopy (fe-esm). structural and morphological properties of nanofilms were investigated. the average crystalline size of tio2 and zn...

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