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211篇 您的检索式:作者名="Sigl"
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1高使用性能粉末冶金零件的表面致密化显示文摘为保证机构的可靠性,历史上一直在用锻钢合金批量生产高转矩变速器零件,诸如变速器齿轮、高性能链轮、单向离合器座圈及滚珠轴承座圈。虽然用粉末冶金工艺生产的零件成本低廉,但常规粉末冶金钢的静态、疲劳及耐磨性能的局限性,使粉末冶金零件不能应用于上述领域。为解决这些缺欠,近年来,一直在研发用选择性表面致密化(SSD)改进粉末冶金钢性能的各种生产工艺。特别是,PMG集团开发出了一种拥有专利权的表面致密化工艺——DensiForm。利用这种工艺可使零件表面关键部分形成深度达1mm的完全致密化表面层,而零件心部仍然是多孔性的。这种结合与粉末冶金材料合金化的灵活性,使生产的烧结钢零件的使用性能可与在高应力下使用的锻钢性能相比拟。本文将介绍2个例子,即变速器中应用的表面致密化螺旋齿轮和直齿链条的驱动链轮。本文说明了螺旋齿轮和驱动链轮的生产工艺与显微组织,介绍了轿车变速器用螺旋齿轮的性能(其中包括在三轴总成的成对试验台架上得到的滚动接触疲劳的数据)和表面致密化链轮的材料性能与使用性能。Lorenz S Sigl Günter Rau Christian Dennert 2012粉末冶金技术2012,30,2:4
2轿车变速器的表面致密化粉末冶金齿轮的使用性能显示文摘选择性表面致密化是改进粉末冶金钢的一种方法,高负载齿轮经过这种加工工艺处理,就能达到使用要求。本文介绍了粉末冶金螺旋齿轮的制造工艺与性能,用三轴总成成对试验台架、承载能力试验台架及噪声试验台架测定了齿轮的使用性能,并把试验结果和具有同样几何形状与表面质量的锻钢齿轮的数据进行了比较。结果表明,粉末冶金齿轮的承载能力与噪声级可和锻钢齿轮相媲美。Cünter Rau Lorenz S Sigl Gerold Mrk Frank Wattenberg 韩凤麟 2012粉末冶金技术2012,30,4:2
3Science Letters:Crossover randomized controlled trial of the electronic version of the Chinese SF-36显示文摘Objectives:to verify the feasibility and reliability of the electronic version of Chinese SF-36 based on the Quality-of-Life-Recorder. Design: A crossover randomized controlled trial, comparing a paper-based and an electronic version of the Chinese SF-36, was conducted. According to generated random numbers, interviewees were asked to fill out either the electronic version or the paper version first. The second version was filled in after a pause of at least 10 min. Settings and participants: One group of 100 medical students at the School of Medicine of Zhejiang University and the other group of 50 outpatients at a clinic for general practice in Hangzhou City (China) were eventually recruited in this study. Results: The acceptance of the electronic version was good (60% of medical students and 84% of outpatients preferred the electronic version). At the level of eight-scale scores, the mean-difference for each scale (except for general health) between the two versions was less than 5%. At the level of 36 questions, the percentage of 'exact agreement' ranged within 64%~99%; the percentage of 'global agreement' ranged within 72%~99%; 77% of the kappa coefficients demonstrated 'good/excellent agreement' and 23% of the kappa coefficients demonstrated 'medium agreement'. Conclusion: This study, for the first time, can provide empirical basis for the confirmation of the feasibility and reliability of the electronic version of the Chinese SF-36 and may provide an impulse towards widespread deployment of the Quality-of-Life-Recorder in Chinese populations.CHEN Tian-hui LI Lu SIGLE Joerg M. DU Ya-ping WANG Hong-mei LEI Jun 2007Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2007,8,8:2
4同步器系统的粉末冶金零件显示文摘近年来,手动变速器的同步器系统中的关键零件,诸如同步器齿毂与同步器锁环,都在用粉末冶金工艺大量生产。本文首先介绍近年来生产先进同步器齿毂用的高强度粉末冶金钢;然后对碳纤维、烧结摩擦层及Mo丝喷涂衬面3种同步器锁环用摩擦衬面进行了比较,根据压力与滑动速度讨论了其摩擦性能与寿命长短;最后,特别强调了粉末冶金的新发展,诸如滑动齿套与负载齿轮,给出并讨论了滑动齿套的应用试验结果,阐述了表面致密化螺旋齿轮的使用性能,给出了运转-时间试验的结果,并和常规的锻钢齿轮进行了比较。Lorenz S Sigl Günter Rau 韩凤麟(译) 2013粉末冶金技术2013,31,2:2
5Heart rate variability increases in elderly depressed patients who respond to electroconvulsive therapy显示文摘Nahshoni E Aizenberg D Sigle M 2004J Psychosom Res2004,56,:1
6Visualization of multipolar longitudinal and transversal surface plasmon modes in nanowire dimers 显示文摘ALBER I SIGLE W MULLER S 2011ACS Nano2011,5,12:1
7Women emerge from general anesthe-sia with propofol/alfentanil/nitrous oxide faster than men 显示文摘Gan TJ Glass PS Sigl J 1999An-esthesiology1999,90,5:1
8What predicts outcome in nonoperatatives of chronic low back pa n? A systematic review显示文摘Wessels T van Tulder M Sigl T 2006Eur Spine J2006,15,11:1
9Oxidative degradation of AOX and COD by different advanced oxidation processes:a comparative study with two samples of pharmaceutical wastewater显示文摘Claus Hofl Gerhard Sigl Oliver Specht 0,,04:1
10Gene expression analysis of protein synthesis pathways in bovine mammary epithelial cells purified from milk during lactation and short‐term restricted feeding显示文摘Sigl T Meyer H H D Wiedemann S 2014Journal of animal physiology and animal nutrition2014,98,1:1
11An Introduction to Bispectral Analysis for the Electroenic Ephalogam显示文摘Sigl J C Chaumon N G 1994J Clin Monit1994,10,6:1
12Visualization of N-acylhomoserine lactone-mediated cell- cell communication between bacteria colonizing the tomato rhizosphere显示文摘Steidle A Sigl K Schuhegger R 2001Application Environ Microbiol2001,67,:1
13GORDIAN:VLSI placement by quadratic programming and slicing optimization显示文摘Kleinhans J M Sigl G Johannes F M 1991IEEE Transactions on Computer Aided Design1991,10,10:1
14Awareness with recall during generalanaesthesia: a prospective observational evaluation of 4001 patients显示文摘Errando CL Sigl JC Robles M 2008Br J Anaesth2008,101,2:1
15Role of space charge in the grain boundary blocking effect in doped zirconia显示文摘Xin Guo Wilfried Sigle Jürgen Fleig Joachim Maier 2002Solid State Ionics2002,,:1
16On the fracture toughness of cemented carbides显示文摘SIGL L S FISCHMEISTER H F 1988Acta Metallurgica1988,36,4:1
17Assessing relative risks of infection and rejection: a meta analysis using an immune function assay显示文摘Kowalski R J Post D R Mannon R B Sebastian A Wright H I Sigle G 2006Transplantation2006,82,:1
18Hospital stay and mor tality are increased in patients having a ' triple low' of low blood pressure, low bispectral index, and h)w minimum alveolar concentra tion of volatile anesthesia显示文摘SESSLER D I SIGL J C Kelley S D 2012The Journal of the American Society of Anesthesiologists2012,116,6:1
19Content comparison of osteoporosis-targeted health status in relation to the International Classification of Functioning,Disability and Health (ICF)显示文摘Borchers M Cieza A Sigl T Kollerits B Kostanjsek N Stucki G 2005Clin Rheumatol2005,24,:1
20GORDIAN: VLSI placement by quadratic programming and slicing optimization 显示文摘Kleinhans J M Sigl G Johannes F M 1991IEEE Transactions on Computer-Aided Design1991,10,3:1
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