نتایج جستجو برای: شاخص ti

تعداد نتایج: 109761  

2018
Tijun Chen Min Gao Yunqi Tong

To prepare core-shell-structured Ti@compound particle (Ti@compoundp) reinforced Al matrix composite via powder thixoforming, the effects of alloying elements, such as Si, Cu, Mg, and Zn, on the reaction between Ti powders and Al melt, and the microstructure of the resulting reinforcements were investigated during heating of powder compacts at 993 K (720 °C). Simultaneously, the situations of th...

2017
Denghui Liu Chongru He Zhongtang Liu Weidong Xu

Titanium and titanium alloy are widely used as orthopedic implants for their favorable mechanical properties and satisfactory biocompatibility. The aim of the present study was to investigate the antibacterial effect and bone cell biocompatibility of a novel implant made with nanotubular anodized titanium coated with gentamicin (NTATi-G) through in vivo study in rabbits. The animals were divide...

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...

Journal: :The Journal of Experimental Medicine 1991
L Tan J Turner A Weiss

The T cell antigen receptor consists of the Ti alpha/beta heterodimer which recognizes antigen, and the associated CD3 chains, thought to be involved in signal transduction. To understand the nature of the interaction between Ti and CD3, chimeric molecules which included the COOH-terminal segments of Ti alpha or beta linked to the extracellular segment of CD8, were transfected into a mutant T c...

2012
Elnaz Ajami Kondo-Francois Aguey-Zinsou

This work investigated the ability of electropolished Ti surface to induce Hydroxyapatite (HA) nucleation and growth in vitro via a biomimetic method in Simulated Body Fluid (SBF). The HA induction ability of Ti surface upon electropolishing was compared to that of Ti substrates modified with common chemical methods including alkali, acidic and hydrogen peroxide treatments. Our results revealed...

Journal: :The International journal of oral & maxillofacial implants 2008
Stephen J Ferguson Jens D Langhoff Katrin Voelter Brigitte von Rechenberg Dieter Scharnweber Susanne Bierbaum Matthias Schnabelrauch Armin R Kautz Vinzenz M Frauchiger Thomas L Mueller G Harry van Lenthe Falko Schlottig

PURPOSE A satisfactory clinical outcome in dental implant treatment relies on primary stability for immediate load bearing. While the geometric design of an implant contributes to mechanical stability, the nature of the implant surface itself is also critically important. Biomechanical and microcomputerized tomographic evaluation of implant osseointegration was performed to compare alternative ...

2008
Ken’ichi Yokoyama Katsutoshi Takashima Jun’ichi Sakai

The susceptibility to hydrogen absorption and hydrogen thermal desorption of titanium alloys has been investigated in a neutral 2.0% NaF solution at 37 C under various applied cathodic potentials. Ti-0.2Pd, Ti-6Al-4V and Ti-11.3Mo-6.6Zr-4.3Sn alloys absorb hydrogen under less noble potentials than 1:5V, 1:9V and 1:4V versus a saturated calomel electrode, respectively. The amounts of absorbed hy...

1998
Michael W. Macon Alan McCree Wai-Ming Lai Vishu Viswanathan

It is well-known that an impulse-excited, all-pole lter is capable of representing many physical phenomena, including the oscillatory modes of percussion musical instruments like woodblocks, xylophones, or chimes. In contrast to the more common application of all-pole models to speech, however, practical problems arise in music synthesis due to the location of poles very close to the unit circl...

Journal: :Chemical communications 2008
Yoshihiro Kubota Yoshihito Koyama Taku Yamada Satoshi Inagaki Takashi Tatsumi

Microporous titanosilicate Ti-MCM-68 (Ti-MSE) was successfully synthesized by post-synthetic isomorphous substitution of Ti for Al and proved to be a high-performance catalyst, in particular showing superior performance to TS-1, Ti-BEA, and Ti-MWW for phenol oxidation using H(2)O(2) as an oxidant.

Journal: :Journal of the American Chemical Society 2014
Aaron Sattler David G VanderVelde Jay A Labinger John E Bercaw

Two new precatalysts for ethylene and α-olefin trimerization, (FI)Ti(CH2SiMe3)2Me and (FI)Ti(CH2CMe3)2Me (FI = phenoxy-imine), have been synthesized and structurally characterized by X-ray diffraction. (FI)Ti(CH2SiMe3)2Me can be activated with 1 equiv of B(C6F5)3 at room temperature to give the solvent-separated ion pair [(FI)Ti(CH2SiMe3)2][MeB(C6F5)3], which catalytically trimerizes ethylene o...

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