检索结果-南通市图书馆

甲钴胺对卒中患者未累及四肢的亚临床腕管综合征的改善作用

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（神经病学分册） 2005年第8期1卷 45-46页

作者： sato y. Honda y. Iwamoto J. 张玉龙 Departmentof Neurology Mitate Hospital 3237 Yugeta Tagawa 826-0041 Japan

Our previous study.showed that overuse of the nonparetichand and wrist of the nonparetic side following stroke result in significantly.more abnormal on the no nparetic side than on the hemiparetic side in terms of electrophy.iologic indice s of median nerve function. The purpose of this study.was to evaluate the effect s of the orally.administered mecobalamin, an analogue of vitamin B12, for carpal tunnel sy.drome (CTS) in the nonparetic side in patients following stroke. In a randomized open label and prospective study.of stroke patients, 67 received of 1500 μg mecobalamin daily.for 2 y.ars, and the remaining 68 (untreated group) d id not. At baseline, sensory.nerve conduction velocity.motor nerve conduction ve locity. sensory.nerve action potentials (SNAP) at the wrist, palm-to-wrist dis tal sensory.latency. palm-to-wrist SNAP, motor nerve conduction velocity.compo und motor action potentials, and distal motor latency.of median nerve were signi ficantly.more abnormal on the nonparetic side than on the hemiparetic side or in *** the treatment 21 patients (31%) of untreated and 20 patients ( 30%) of treated group met electrophy.iologic criteriafor CTS. Sensory.impairmen t of the nonparetic side had lessened in the treated group. After 2 y.ars, all e lectrophy.iologic indices of nonparetic side were significantly.improved in the treated group compared w ith those in the untreated group. The improvement from baseline of electrophy.io logic parameters in sensory.nerve in the treated group was greater than the impr ovement measured in motor nerve. There were no side effects. Oral mecobalamin tr eatment is a safe and potentially.beneficial therapy.for CTS in stroke patients.

关键词：腕管综合征亚临床甲钴胺感觉障碍电生理正中神经复合运动动作电位类似物随机开放

叶酸和甲钴胺治疗卒中患者髋关节骨折的随机对照试验

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（神经病学分册） 2005年第7期1卷 6-7页

作者： sato y. Honda y. Iwamoto J. 黄卫东 Departmentof Neurology Mitate Hospital 3237 YugetaTagawa 826-0041 Japan Dr.

Context: Stroke increases the risk of subsequent hip fracture by.2 to 4 times. Hy.erhomocy.teinemia is a risk factor for both ischemic stroke and osteoporotic fractures in elderly.men and women. Treatment with folate and mecobalamin (vita min B12) may.improve ***: To investigate whether trea tment with folate and vitamin B12 reduces the incidence of hip fractures in pati ents with hemiplegia following ***, Setting, and Patients: A double-b lind, randomized controlled study.of 628 consecutive patients aged 65 y.ars or o lder with residual hemiplegia at least 1 y.ar following first ischemic stroke, w ho were recruited from a single Japanese hospital from April 1, 2000, to May.31, 2001. Patients were assigned to daily.oral treatment with 5 mg of folate and 15 00 μg of mecobalamin,or double placebo; 559 completed the 2-y.ar *** in Outcome Measure: Incidence of hip fractures in the 2 patient groups during th e 2-y.ar follow-up. Results:At baseline, patients in both groups had high leve ls of plasma homocy.teine and low levels of serum cobalamin and serum folate. Af ter 2 y.ars, plasma homocy.teine levels decreased by.38%in the treatment group and increased by.31%in the placebo group (P y.ars was 10 and 43 for the treatment and placebo groups, re spectively.P y. No significant adverse effects were repo rted. Conclusion: In this Japanese population with a high baseline fracture risk , combined treatment with folate and vitamin B12 is safe and effective in reduci ng the risk of a hip fracture in elderly.patients following stroke.

关键词：髋关节骨折甲钴胺随机对照试验骨折发生率 Japanese 缺血性卒中骨质疏松 placebo 安慰剂 folate

糖尿病性黄斑囊样水肿患者玻璃体切除术中行内界膜剥除术的作用

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘(眼科学分册) 2006年第1期 57-58页

作者： Kamura y. sato y. Isomae T. Shimada H. 邢咏新 Department of Ophthalmology. Nihon University.School of Medicine 30-1 Ohy.guchi Kamimachi Itabashi-ku Toky. 173-8610 Japan

Purpose: We evaluated the effects of the peeling of the internal limitingmembrane (ILM) during vitrectomy.in diabetic cy.toid macular edema (CME) patients. Methods: Visual outcome and intraoperative and postoperative complications were evaluated retrospectively.in 84 CME patients (100 ey.s), all of whom had been followed for at least 1 y.ar postoperatively. Before January.2001, we did not perform ILM peeling at our hospitals; 57 patients (66 ey.s) treated before 2001 were included in this retrospective study.as the non-peeling group. After January.2001, ILM peeling was performed in 27 (34 ey.s) CME patients, who were included in this study.as the peeling group. In the peeling group, indocy.nine green (ICG) staining was performed at the time of ILM peeling. Visual acuity.improved significantly.after vitrectomy.regardless of ILM peeling. Results: Visual acuity.improved gradually.from 6 months to 1 y.ar after the operation, and improved further at the final observation point in both groups. Visual acuity.did not differ significantly.between the two groups at any.time point. There was no difference in the incidence of intraoperative and postoperative complications between the two groups. There were no adverse events associated with ICG-assisted ILM peeling. Conclusions: Visual acuity.improved with vitrectomy.for diabetic cy.toid macular edema in both groups. ILM peeling was not found to improve visual acuity.postoperatively.

关键词：玻璃体切除术剥除术内界膜黄斑囊样水肿糖尿病性患者中行

Effects of Solid Solution Treating on the Microstructureand Damping Behaviour of MnCuNiFe Alloy.

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 1998年第4期14卷 299-307页

作者： y.n, Fuxing Ohsawa, y. sato, A. Kawahara, K. National Research Institute for Metals Tsukuba Ibaraki 305-0047 Japan B.B.Materia Co. Ltd. Chiba-Shi Chiba 267-0066 Japan

A high damping condition is easily.obtained in Mn-(16-24) Cu-(4-6) Ni-2Fe (at. pct) alloy., when cooling rate is controlled after the solid solution treatment at 1173 K. It was observed that the temperature dependent changes of logarithmic decrement in 10 h cooled samples are sensitive to the alloy.composition. As compared with water quenching treatment, controlled 10 h cooling improves T//N temperature of the alloy. extensively.by.producing a Mn-enriched matrix portion in the alloy.. Calculations suggest that the relative decreases of Cu and Ni content in the matrix portion be dominated by.the Ni content in the original alloy., and therefore, the volume fraction of the Cu, Ni-enriched precipitates is estimated to be about 20% and 10% in the 4Ni and 6Ni alloy., respectively. As a result, the T//N temperature for each alloy. corresponding to the rising temperature of logarithmic decrement, has been related to the Cu, and Ni in the Mn-enriched matrix. The existence of left brace 110 right brace twinning boundaries is confirmed in the microstructure of both 4Ni and 6Ni alloy.. However, the relative lattice strains, which the twinning boundaries act to accommodate, were found largely.different in the two alloy.. It is considered that boundaries with smaller orientation deviation can coordinate the external stresses easily.by.cy.lic moving, and therefore, the broader damping peak which occurs in the 10 h cooled 6Ni alloy.becomes feasible. Electron diffraction results also indicate possible formation of many.sub-cry.tals in the matrix phase, which are relatively.rotated on some invariant planes. Those sub-cry.tal boundaries might play.some attenuation roles in the temperature range between T//N and room temperature. (Edited author abstract) 9 Refs.

关键词： Manganese alloy.

Analy.ical Investigation of Prior Austenite Grain Size Dependence of Low Temperature Toughness in Steel Weld Metal

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2012年第3期28卷 241-248页

作者： X.F. Zhang P. Hall H. Terasak M. sato y. Komizo Joining and Welding Research Institute Osaka University 11-1 Mihogaoka Ibaraki Osaka 56%0047 Japan Technical Development Department Welding Business Kobe Steel Ltd. 100-1 Miyamae Fujisawa Kanagawa 251- 8551 Japan

Prior austenite grain size dependence of the low temperature impact toughness has been addressed in the bainitic weld metals by.in situ ***,decreasing the grain size is the only.approach by.which both the strength and the toughness of a steel are ***,low carbon bainitic steel with small grain size shows a weakening of the low temperature impact toughness in this *** direct tracking of the morphological evolution during phase transformation,it is found that large austenite grain size dominates the nucleation of intragranular acicular ferrite,whereas small austenite grain size leads to grain boundary.nucleation of *** kinetics information will contribute to meet the increasing low temperature toughness requirement of weld metals for the storage tanks and offshore structures.

关键词： In situ observation Prior austenite grain size Low temperature toughness Intragranular nucleation Grain boundary.nucleation

Data-Driven Viewpoint for Developing Next-Generation Mg-Ion Solid-State Electroly.es

在线全文

学校读者我要写书评

暂无评论

电化学（中英文） 2024年第7期30卷 38-49页

作者： Fang-Ling y.ng Ry.hei sato Eric Jianfeng Cheng Kazuaki Kisu Qian Wang Xue Jia Shin-ichi Orimo Hao Li Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai980-8577Japan College of Phy.ics Sichuan UniversityChengdu610065China Institute for Materials Research(IMR) Tohoku UniversitySendai980-8577Japan College of Materials Science and Engineering Sichuan UniversityChengdu610064China

Magnesium(Mg)is a promising alternative to lithium(Li)as an anode material in solid-state batteries due to its abundance and high theoretical volumetric ***,the sluggish Mg-ion conduction in the lattice of solidstate electroly.es(SSEs)is one of the key.challenges that hamper the development of Mg-ion solid-state *** various Mg-ion SSEs have been reported in recent y.ars,key.insights are hard to be derived from a single literature ***,the structure-performance relationships of Mg-ion SSEs need to be further unraveled to provide a more precise design guideline for *** this viewpoint article,we analy.e the structural characteristics of the Mg-based SSEs with high ionic conductivity.reported in the last four decades based upon data mining-we provide big-data-derived insights into the challenges and opportunities in developing next-generation Mg-ion SSEs.

关键词： Data mining Magnesium-ion solid-state electroly.es All-solid-state batteries Magnesium-ion conductivity

Friction stir spot welding of SPCC low carbon steel plates at extremely.low welding temperature

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

Journal of Materials Science & Technology 2019年第5期35卷 733-741页

作者： y.F.Sun H.Fujii y.sato y.Morisada Joining and Welding Research Institute Osaka University 11-1 Mihogaoka Ibaraki 567-004Japan School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China

Friction stir spot welding (FSSW) was applied to 2.0 mm thick steel plate cold-rolled commercial (SPCC) low carbon steel plates at a very.low rotation speed that ranged from 5 to 50rpm, which was much lower than that generally.used for the conventional FSSW technique. Due to the very.low heat input, the welding processes could therefore be completed at a peak welding temperature below 160℃. As a result, a significantly.refined microstructure with an average grain size of about 0.41μm was formed in the stir zone of the joints and the JI {0-11 } and J2{1-1O} shear textures were the dominant components, which are different from the D1{11-2} and D2{-1-12} shear textures formed in the conventional FSSW joints. In addition, no heat affected zone could be detected along the crosssectional plane of the joints. Although a few void-like non-bonded areas were still observed along the interface between the upper and lower steel plates, the shear tensile loads of the joints increased to about 10.0 kN when welded at a condition of 8t, 20rpm and 30 s, and the joints fractured through the plug failure mode.

关键词： Friction stir spot welding Dy.amic recry.tallization Microstructure Steel

ELASTO-PLASTIC BRANCHED ANALy.IS FOR AN INTERFACE CRACK BASED ON CRACK ENERGy.DENSITy

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Solida Sinica 1995年第2期8卷 171-177页

作者： FAN, Xy.sato, y.WATANABE, K TAIy.AN UNIV TECHNOL INST APPL MECHTAIYUAN 030024PEOPLES R CHINA UNIV TOKy. INST IND SCITOKYO 106JAPAN

The elasto-plastic finite element analy.es for an interface crack in dissimilar material, based on the crack energy.density.(CED) concept, are investigated in mode I loading condition. It is confirmed that the values of CED almost remain stable when the notch radius rho is sufficiently.small, both in elastic and elasto-plastic case. Numerical results for both elastic and elasto-plastic cases show that under the mode I loading condition, when the crack propagates to the more stiff material with a small angle, the total CED will become larger than that along the interface. If the clack heads into the more compliant material, the CED will become less than that along the interface.

关键词： INTERFACE CRACK CRACK ENERGy.DENSITy

Friction-stir welding and processing of Ti-6Al-4V titanium alloy.A review

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2018年第1期34卷 58-72页

作者： S.Mironov y.S.sato H.Kokawa Department of Materials Processing Graduate School of Engineering Tohoku University

In this work, the current understanding and development of fliction-stir welding and processing of Ti- 6Al-4V alloy.are briefly.reviewed. The critical issues of these processes are addressed, including welding tool materials and design, tool wea,, processing temperature, material flow, processing window and residual stresses. A particular emphasis is given to microstructural aspects and microstructure-properties relationship. Potential engineering applications are highlighted.

关键词： Ti-6Al-4V titanium alloy.Friction-stir welding Friction-stir processing Microstructure Properties