نتایج جستجو برای: ti si mixed oxides

تعداد نتایج: 345210  

2001
C. J. Nicklaw M. P. Pagey S. T. Pantelides D. M. Fleetwood R. D. Schrimpf K. F. Galloway J. E. Wittig B. M. Howard

Electrical charge-trapping characteristics have been studied in thermal oxides that were implanted with Si, experimentally using electron spin resonance (ESR), capacitance versus voltage (CV) measurements, transmission electron microscopy (TEM), atomic force microscopy (AFM), and theoretically with Density Functional Theory (DFT) using plane waves. Our study examines possible defect structures ...

Journal: :medical journal of islamic republic of iran 0
mahmood nazarpoor department of radiology, faculty of paramedicine, tabriz university of medical sciences, tabriz, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (tabriz university of medical sciences)

background :inversion recovery (ir) pulse sequences can generate t1-weighted images with a different range of inversion time (ti) to suppress or null the signal intensity (si) for a specified tissue. in this study, we aimed to investigate the effect of ti values on the concentration of the contrast agent, which leads to a minimum signal intensity, using an inversion recovery t1-weighted 3-dimen...

2014
Hodaiseh Saharkhiz Nahideh Gharehaghaji Mahmood Nazarpoor Asghar Mesbahi Masoud Pourissa

BACKGROUND Magnetic nanoparticles have been widely applied in recent years for biomedical applications. Signal intensity (SI) of magnetic resonance (MR) images depends on the concentration of nanoparticles. It is important to find the minimum concentration of iron oxide nanoparticles that produces maximum SI and determines the minimum injection dose for clinical studies. OBJECTIVES This study...

Journal: :The Journal of chemical physics 2008
Tinku Baidya K R Priolkar P R Sarode M S Hegde K Asakura G Tateno Y Koike

Ce(1-x-y)Ti(x)Pt(y)O(2-delta) (x=0.15; y=0.01) and Ce(1-x-y)Ti(x)Pd(y)O(2-delta) (x=0.25; y=0.02 and 0.05) are found to be good CO oxidation catalysts [T. Baidya et al., J. Phys. Chem. B 110, 5262 (2006); T. Baidya et al., J. Phys. Chem. C 111, 830 (2007)]. A detailed structural study of these compounds has been carried out by extended x-ray absorption fine structure along with x-ray diffractio...

Journal: :Chemosphere 2013
Songhu Yuan Na Gou Akram N Alshawabkeh April Z Gu

The performance of a new electro-Fenton process with Ti-based mixed metal oxides (Ti/MMO) cathode, a dimensionally stable electrode, is evaluated for degrading contaminants of emerging concerns (CECs) in aqueous solutions. Bisphenol A (422μgL(-1)) is completely degraded in an undivided cell using Ti/MMO as the cathode in the presence of 6.9mgL(-1) Fe(2+) within 20min under conditions of pH 4 an...

2017
Sanchitha Chandar Ravindra Kotian Prashanthi Madhyastha Shama Prasada Kabekkodu Padmalatha Rao

PURPOSE The aim of this study was to investigate the cytotoxicity in human gingival fibroblast by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and corrosion behavior by potentiodynamic polarization technique of commercially pure titanium (Ti 12) and its alloy Ti-6Al-4V (Ti 31). MATERIALS AND METHODS In the present in vitro study, cytotoxicity of Ti 12 and Ti 31 in ...

Journal: :Biomaterials 2008
Jiang Jiang Kaifu Huo Zhengwei Wu Shaopeng Chen Shihao Pu Zengliang Yu Xuanyong Liu Paul K Chu

Micronuclei tests (MNT) using the Chinese Hamster Ovary (CHO) cells and Chinese Hamster Ovary Mutant cells (XRS5) have been conducted to evaluate the biocompatibility of silicon and titanium plasma-implanted silicon. Pure Si induces high MN ratios of the two cell lines and thus has poor biocompatibility. The MN ratio of CHO cells is higher than background by about 44% and the MN ratio of XRS5 c...

2016
Alina Vladescu Irina Titorencu Yuri Dekhtyar Victor Jinga Vasile Pruna Mihai Balaceanu Mihaela Dinu Iulian Pana Viktorija Vendina Mariana Braic

In the current study, we have examined the possibility to improve the biocompatibility of the (TiZrNbTaHf)C through replacement of either Ti or Ta by Si. The coatings were deposited on Si and 316L stainless steel substrates by magnetron sputtering in an Ar+CH4 mixed atmosphere and were examined for elemental composition, chemical bonds, surface topography, surface electrical charge and biocompa...

2008
MARY HELEN FAGAN STERN NEILL BARBARA ROSS

This research utilizes the Integrated Model of Technology Acceptance (IMTA) to t study the intention to use computers i t t ( among first irst line managers in a mid-sized manufacturing li a f t organization (n=172). As hypothesized, the study found 1) a r ( l72). positive relationship between extrinsic motivation and behavioral iti l ti intention to use computers, 2) positive relationship betw...

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