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131.
Influence of different fluoride containing electrolytes on the formation of self-organized titania nanotubes by Ti anodization 总被引:1,自引:0,他引:1
J. M. Macak L. V. Taveira H. Tsuchiya K. Sirotna J. Macak P. Schmuki 《Journal of Electroceramics》2006,16(1):29-34
The formation of self-organized porous titania nanotubes is achieved by electrochemical anodization under specific experimental
conditions. In present work, the formation of porous titania nanotubes on titanium substrates is investigated in several SO42−/F− based electrolytes. The presence of some non-porous layers covering the porous layers and accompanying the pore growth is
observed. We discuss in details the influence of different electrolyte composition on the structure of self-organized porous
layers, investigate the conditions for ideal pore growth. SEM investigations and XRD, AES and EDX surface analyses are carried
out to characterize the self-organized porous layers. The results show that using SO42−/F− electrolytes with different cations can drastically influence the final morphology of the self-organized porous nanotubes.
We furthermore show that the nanotubes consist of TiO2 and that they remain unchanged when annealed. 相似文献
132.
Nan Li Toshiaki Ohshima Kei-ichi Shozen Hideki Ushio Chiaki Koizumi 《Journal of the American Oil Chemists' Society》1994,71(6):623-627
In order to evaluate the effects of the degree of unsaturation of triacylglycerols on cholesterol oxidation, mixtures of purified
sardine oil triacylglycerols (iodine value, IV=182.6) and cholesterol; of partially hydrogenated sardine oil triacylglycerols
(IV=174.5) and cholesterol; and of fully hydrogenated sardine oil triacylglycerols (IV=92.0) and cholesterol were incubated
at 25°C in the dark. The oxidative stability of the samples decreased with increasing degree of unsaturation of the triacylglycerols
in the sample mixtures; the induction period for peroxide values (PV) of the sardine oil triacylglycerols and cholesterol
was shorter than that of the partially hydrogenated sardine oil triacylglycerols and cholesterol. Certain polyunsaturated
fatty acids (PUFAs) in the constituent fatty acids of sardine oil triacylglycerols started to decrease after a shorter induction
period compared with that of the partially hydrogenated triacylglycerols. The prominent cholesterol oxides accumulated in
the samples were 7β-hydroxycholesterol, 7-ketocholesterol, β-epoxide and cholestane triol. The tendency for accumulation of
cholesterol oxides in the time course coincided with the changes in PV as well as the decrease in PUFAs. Cholesterol was oxidized
in conjunction with autoxidation of coexisting fish oil triacylglycerols. Although lowering the degree of unsaturation of
fish oil triacylglycerols was effective in prolonging the induction period of cholesterol oxidation, the rate of cholesterol
oxidation in the cholesterol oxides' formation phase after the induction period was not affected by the difference in the
proportion of highly unsaturated fatty acids in the natural and partially hydrogenated triacylglycerols of fish oils. 相似文献
133.
Takashino H. Okagaki T. Uchida T. Hayashi T. Tanizawa M. Tsukuda E. Eikyu K. Wakahara S. Ishikawa K. Tsuchiya O. Inoue Y. 《Electron Devices, IEEE Transactions on》2008,55(10):2632-2640
In this paper, we propose a new analytical electron mobility model in strained Si inversion layers suitable for implementation in a drift-diffusion simulator. Using our new model, a numerical study in conjunction with comprehensive bending experiments has demonstrated that (100)-Si has the optimum channel direction along <110> in terms of the device performance of strained 65-nm-node nMOSFETs with contact etch stop layer and that both the shear-strain component and the quantum confinement effect are key factors in contributing to this superiority. 相似文献
134.
Yuka Tarui Takumi Chinen Dr. Yoko Nagumo Dr. Takayuki Motoyama Dr. Toshiaki Hayashi Dr. Hiroshi Hirota Dr. Makoto Muroi Yasuyuki Ishii Hisae Kondo Prof. Dr. Hiroyuki Osada Prof. Dr. Takeo Usui 《Chembiochem : a European journal of chemical biology》2014,15(7):934-938
Terpendole E is first natural product found to inhibit mitotic kinesin Eg5, but its inhibitory mechanism remains to be revealed. Here, we report the effects of terpendole E and 11ketopaspaline (a new natural terpendole E analogue) on the Eg5–microtubule interaction and in several Eg5 mutants. 11‐Ketopaspaline is a shunt product from terpendole E, and it shows potent inhibitory activity against the microtubule‐stimulated ATPase activity of Eg5. Unlike other Eg5 inhibitors, such as S‐trityl‐L ‐cysteine (STLC) and GSK‐1, both terpendole E and 11‐ketopaspaline only partially inhibited Eg5–microtubule interaction. Furthermore, terpendole E and 11‐ketopaspaline inhibited several Eg5 mutants that are resistant to STLC (Eg5D130A, Eg5L214A) or GSK‐1 (Eg5I299F, Eg5A356T), but with the same extent of inhibition against wild‐type Eg5. Because Eg5D130A and Eg5L214A show cross‐resistance to most known Eg5 inhibitors, which bind the L5 loop, these results suggest that terpendole E and its analogues have a different binding site and/or inhibitory mechanism to those for L5 loop‐binding type Eg5 inhibitors. 相似文献
135.
136.
Koichi Tsuchiya Tadahiro Koike 《Journal of Materials Engineering and Performance》2011,20(4-5):517-521
The microstructures and mechanical properties of amorphous/nanocrystalline hybrid TiNi wires produced by severe cold drawing were investigated. Annealed wires of Ti-50.9?mol%Ni and Ti-41?mol%Ni-8.5?mol%Cu were subjected to severe cold drawing of 50-70% reduction. The as-drawn TiNi wires were composed of the mixture of amorphous phase and predominantly B2 nanocrystalline phase. Young??s modulus increased with the drawing reduction which can be attributed to the increase in the amount of amorphous phase. For the binary TiNi wires, the volume fraction of amorphous phase was estimated to be about 60% from Young??s modulus and electrical resistivity. The wires drawn over 60% exhibited peculiar large linear elastic strain which is quite different from superelasticity. Aging at 573?K led to an increase in tensile elongation as well as in the recoverable strain. The amorphization by cold drawing was also confirmed for Ti-41?mol%Ni-8.5?mol%Cu in 62% drawn wires. 相似文献
137.
Md.Mahbubul Alam ShigeruMatsuo KenbuTeramoto ToshiakiSetoguchi Heuy-Dong Kim 《热科学学报(英文版)》2006,15(3):213-219
A computational investigation has been conducted to determine the effectiveness of a passive control technique ofattenuating cavity-induced pressure oscillations in a confined two-dimensional supersonic flow.The passivecontrol technique is achieved by fitting two flat plates near the front wall of a square cavity at Mach number 1.83at the cavity entrance.The results showed that the flat plates attached near the front wall of the cavity,discouraged the formation of feedback loop which is widely believed to be the reason of cavity resonance.Theresultant amount of attenuation of pressure oscillations was also dependent on the length of the fiat plate used asan oscillation suppressor. 相似文献
138.
正反转双转轮水轮机水力性能研究 总被引:1,自引:0,他引:1
研究用于低水头的反转双转轮、双转子小型水力发电设备,探讨反转双转轮的基本原理与水轮机转轮的水力特性,确认了在流量一定的运转工况时反转前转轮转速与正转后转轮转速相等条件下可以得到最高效率、且出力为两转轮之和(单转轮的2倍)。通过模型实验,确认了正反转两转轮的水力性能基本满足一般的相似准则,可以进行实际转轮设计时的换算。 相似文献
139.
The time-dependent behavior of non-equilibrium condensation of moist air through a Ludwieg tube with a diaphragm downstream is investigated by using a computational fluid dynamics work. The two-dimensional, compressible, Navier-Stokes equations, fully coupled with the condensate droplet growth equations, are numerically solved by a third-order MUSCL type TVD finite-difference scheme with a second-order fractional time step. Baldwin-Lomax turbulence model is employed to close the governing equations. The present computations represent the experimental flows well. The results obtained show that for an initial relative humidity over 40 %, the periodic excursions of the condensation shock occurs in the Ludwieg tube, and the frequency increases with the initial relative humidity. It is also found that total pressure loss due to non-equilibrium condensation in the Ludwieg tube should not be ignored even for a very low initial relative humidity. Furthermore, the variations of condensation properties are also di 相似文献
140.
Michael Zeutzius Toshiaki Setoguchi Toshihiro Nakano Hideo Miyanishi Kunio Terao Saga University Honjo Saga - Japan 《热科学学报(英文版)》2000,(2)
~nonEmphasising time characterishcs and contIDI, onlyfew workll'v is av'ailable among the numerous reports onPulse combustors. Rare work deals with tWin Pulsecombustorsls] or combined pulse combustor-"dinesystemsl']. Kenffield15] obtained with a combinedconvenhonal Pulse combustor-tulbine system acombushon Pressals gain of 3-7% and a totalPerformance Of the combustor-"dine system for Pulsecombushon 40% higher than that of steady'combushonwhat aught also be due tO the brine characteristics.… 相似文献