检索结果-南通市图书馆

Journal of University of Science and Technology Beijing 2003年第3期10卷 39-42页

作者： T.Kikuchi M.Sakairi h.takahashi Graduate School of Engineering Hokkaido UniversitySapporo 060-8628JapanGraduate School of EngineeringHokkaido UniversitySapporo 060-8628JapanGraduate School of EngineeringHokkaido UniversitySapporo 060-8628Japan

Independent microstructures made of Ni metal were fabricated by fivesequential processes: porous anodic oxide film formation, pore sealing, laser irradiation, Nielectroplating, and removal of the aluminum substrate and anodic oxide films. Aluminum plates androds were anodized in an oxalic acid solution to form porous type anodic oxide films, and thenimmersed in boiling distilled water for pore sealing. The anodized and pore-sealed specimens wereirradiated with a pulsed neodymium-doped yttrium aluminum garnet (Nd-YAG) laser beam in a Ni platingsolution to remove anodic oxide film locally by rotating and moving up I down with anXYZ(theta)-stage. Nickel was deposited at the area where film had been removed by cathodicpolarization in the solution before removing the aluminum substrate and anodic oxide films in NaOhsolutions. Cylindrical or plain network structures were fabricated successfully.

关键词： anodize laser irradiation nickel metal electrodeposition

Effect of aging treatment on irradiation-induced segregation of high Mn-Cr steel

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 58-61页

作者： D.S.BAE S.P.LEE Y.R.ChO h.takahashi Department of Advanced Materials Engineering Dong-Eui University Department of Materials Engineering Dong-Eui University Department of Materials Science and Engineering Pusan National University Center for Advanced Research of Energy Conversion Materials Hokkaido University

To investigate the effect of aging treatment on irradiation-induced segregation of high Mn-Cr steel, specimens for electron-beam irradiation were prepared from the high Mn-Cr austenitic steel which was solution treated at 1 373 K for 1 h and aging treated at 573 K for 1 000 h, respectively. The electron-beam irradiation was performed at 573 K up to doses of 5.4 dpa in a 1 250 kV hVEM and irradiation-induced segregation analyses were carried out by an EDX in a 200 kV FE-TEM. The results show that void formation is not observed in both solution treated and aging treated ones. The amount of Cr segregation at the grain boundary decreases in the aged one; however, that of Mn is not changed in solution treated one.

关键词： high Mn-Cr steel hVEM electron-beam irradiation irradiation-induced segregation aging

high Density Plasma heating by EC-Waves Injected from the high-Field Side for Mode Conversion to Electron Bernstein Waves in LhD

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2013年第2期15卷 93-96页

作者： Y.YOShIMURA S.KUBO T.ShIMOZUMA h.IGAMI h.takahashi M.NIShIURA S.OGASAWARA R.MAKINO T.MUTOh h.YAMADA A.KOMORI National Institute for Fusion Science 322-6 Oroshi-cho Toki 509-5292 Japan Dept. of Energy Science and Technology Nagoya Univ.Nagoya 464-8463 Japan

To realize an excitation of electron Bernstein waves （EBW） via mode conversion from X-mode waves injected from the high magnetic field side （hFS）, new inner-vessel mirrors were installed close to a helicM coil in the large helicM device （LhD）. 77 Ghz electron cyclotron （EC） wave beams injected from an existing EC-wave injection system toward the new mirror are reflected on the mirror so that the beams are injected to plasmas from hFS. Evident increases in the electron temperature at the plasma core region and the plasma stored energy were observed by the hFS beam injection to the plasmas with the line-average electron density of 7.5~ 1019 m-3, which is slightly higher than the plasma cut-off density of 77 Ghz EC-waves, 7.35~ 1019 m-3. The heating efficiency evaluated from the changes in the time derivative of the plasma stored energy reached ,,~70%. Although so far it is not clear which is the main cause of the heating effect, the mode-converted EBW or the X-mode wave itself injected from the hFS, an effective heating of high-density plasma over the plasma cut-off of EC-wave was successfully demonstrated.

关键词： electron Bernstein wave EBW slow X-B overdense high density plasmaheating high-field side injection ECh LhD

在线全文

学校读者我要写书评

暂无评论

新广谱杀虫剂乙虫脒

农药 1993年第5期32卷 40-40,39页

作者： h.takahashi 陈文

乙虫脒是日本曹达公司研究开发的新型杀虫剂,对半翅目、缨翅目和鳞翅目害虫有高效,对苹小食心虫也有效,而且有杀卵活性。具杀虫谱广,具内吸性,可叶面施药,也可土壤施药。

关键词：乙虫脒杀虫剂氰基甲基乙脒

Multi-instrument study of longitudinal wave structures for plasma bubble seeding in the equatorial ionosphere

在线全文

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2021年第5期5卷 368-377页

作者： h.takahashi P.Essien C.A.O.B.Figueiredo C.M.Wrasse D.Barros M.A.Abdu Y.Otsuka K.Shiokawa GuoZhu Li Instituto Nacional de Pesquisas Espaciais São Josédos CamposBrazil Institute for Space-Earth Environmental Research Nagoya UniversityNagoyaJapan Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China

Large Scale Wave Structures(LSWS)in the equatorial ionospheric F-region were observed by measuring spatial and temporal variations within detrended total electron content(dTEC)data obtained by ground-based GNSS receivers over the South American *** using dTEC-maps,we have been able to produce,for the first-time,two-dimensional representations of *** the period from September to December,the LSWS frequently occurred starting a few hours prior to Equatorial Plasma Bubble(EPB)*** 17 events of LSWS observed in 2014 and 2015,wave characteristics were obtained:the observed wavelengths,periods,and the phase speeds are respectively,~900 km,~41 min and~399 m/s;the waves propagated from the northeast to *** some cases the front of the oscillation was meridionally aligned,extending to more than 1600 km,the first time such large extension of the wavefront has been *** F-layer bottom height oscillation data,measured by ionosonde,LSWS exhibit two different vertical phase propagation modes,in-phase and downward *** former mode indicates the presence of a polarization electric field in the F-layer bottom side;the latter suggests propagation of atmospheric gravity *** presence of LSWS near the solar terminator,followed by the development of EPBs,suggests that the upwelling of the F-layer bottom height produces a condition favorable to the development of Rayleigh–Taylor instability.

关键词： ionosphere Equatorial Plasma Bubble LSWS TEC

A Study of Microstructures in helium-implanted 4h-SiC by RBS-channeling and TEM

在线全文

学校读者我要写书评

暂无评论

IMP & hIRFL Annual Report 2002年 61-62页

作者： T.Shibayama,K.Sakaguchi,h.takahashi Laboratory for Ultra-functional Materials Center for Advanced Research of Energy Technology hokkaido University Sapporo Japan. Laboratory for Ultra-functional Materials Center for Advanced Research of Energy Technology hokkaido University Sapporo Japan. Laboratory for Ultra-functional Materials Center for Advanced Research of Energy Technology hokkaido University Sapporo Japan.

Silicon carbide is a technologically important material due to its superior mechanical and electronic properties. The understanding of defect production in helium-implanted silicon carbide is important for the vise of this material in nuclear energy devices or for the proposed getting technique of electronic devices of silicon carbide. Much less is known about helium behavior in silicon carbide than in silicon and metals. Our recent study with transmission electron microscopy (TEM) indicated that the formation behavior of helium precipitates i.e.

关键词：

Laser Assisted Micro-patterning of Anodic Oxide Film of Aluminum

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Laser Assisted Micro-patterning of Anodic Oxide Film of Alum...

Zero-Order Release Profiles from A Multistimuli Responsive Electro-Conductive hydrogel

2006年上海电子电镀学术报告会

作者： h.Jha T. Kikuchi M. Sakairi h.takahashi Lab. of Interface Microstructure Analysis. Graduate school of Engineering hokkaido University Kita-13 Nishi-8 Kita-ku Sapporo-shi 060-8628. Japan. Lab. of Interface Microstructure Analysis. Graduate school of Engineering hokkaido University Kita-13 Nishi-8 Kita-ku Sapporo-shi 060-8628. Japan. Lab. of Interface Microstructure Analysis. Graduate school of Engineering hokkaido University Kita-13 Nishi-8 Kita-ku Sapporo-shi 060-8628. Japan. Lab. of Interface Microstructure Analysis. Graduate school of Engineering hokkaido University Kita-13 Nishi-8 Kita-ku Sapporo-shi 060-8628. Japan.

＜正＞Micro-patterning of surface has been extensively investigated for development of micro-electrochemical systems （MEMS）, micro-total analysis system （μ-TAS）, electronic devices and so on. The present research...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Biomaterials and Nanobiotechnology 2012年第2期3卷 262-268页

作者： Suelen h.takahashi Luiz M.Lira Susana I.Córdoba de Torresi Instituto de Química Universidade de Sao Paulo Brazil

Electroconductive hydrogels has been extensively studied in drug delivery systems because they combine the properties of hydogels with the conducting polymers in only one material. In this work, pyrrole was polymerized electrochemically into poly(acrylic acid) hydrogel. This material kept the swelling properties that are characteristic of hydrogels and the electroactivity of the conducting polymers. The hydrogel (with and without the conducting polymer) swelling degree depends on both the ionic strength and ph. As this material is responsive to changes in the electrical potential, ph and ionic strength, the safranin release presented different delivery profiles, in accordance to variations and combinations of these stimuli. The most interesting result was the achievement of the linear safranin release indicating a zero-order kinetics.

关键词： hydrogels Conducting Polymers Controlled Release

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

用于测量振动和声压的激光二极管干涉仪

中国检验检测 1990年第4期 45-47+39页

作者： h.takahashi 唐煜

一、前言最近几年,报导了有关在低频范围内进行小位移测量的双频激光干涉仪,以及用两个声-光调制器(AOM),利用激光二极管光束的波长偏移进行距离测量的干涉仪。可以买到用于小位移和小距离测量的由两个 AOM 制成的干

关键词：激光二极管组合体 AOM 半导体激光器干涉仪测量仪器反射镜反光镜电容式传声器

A Study of Microstructures in helium-implanted 4h-SiC by RBS-channeling and TEM

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

近代物理研究所和兰州重离子加速器实验室年报：英文版 2002年第1期 61-62页

作者： ZhangChonghong SunYoumei SongYing DuanJinglai T.Shibayama K.Sakaguchi h.takahashi ShenDingyu 不详 LaboratoryforUltra-functlonalMaterials CenterforAdvancedResearchofEnergyTechnologyHokkaidoUniversitySapporoJapan. MOEKeyLaboratoryofheavyIonPhysics PekingUniversityBeijing.

关键词：氦离子注入碳化硅晶体显微结构 RBS沟道透射电镜研究 TEM 串联加速器