维普中文期刊产品整合服务
362篇 您的检索式:作者名="Elger"
    题名 作者 年代 出处 被引量
1动情周期和妊娠期豚鼠宫颈张力的变化与性激素水平的关系显示文摘本文用离体宫颈张力测定法及放射免疫测定法证实,动情周期中豚鼠宫颈张力的变化与血中孕酮水平呈正相关。妊娠期豚鼠宫颈张力变化明显。孕62天及65天时,宫颈张力极度减弱,宫颈口开大,耻骨联合松弛,宫颈增重,这些生理变化是受血中P、E_2、PGFM及羊水中PGFM浓度的影响。施少清 Chwalisz K Elger W 1990生殖与避孕1990,10,2:3
2Transient thermal analysis as measurement method for IC package structural integrity显示文摘Practices of IC package reliability testing are reviewed briefly,and the application of transient thermal analysis is examined in great depth.For the design of light sources based on light emitting diode(LED) efficient and accurate reliability testing is required to realize the potential lifetimes of 105 h.Transient thermal analysis is a standard method to determine the transient thermal impedance of semiconductor devices,e.g.power electronics and LEDs.The temperature of the semiconductor junctions is assessed by time-resolved measurement of their forward voltage(Vf).The thermal path in the IC package is resolved by the transient technique in the time domain.This enables analyzing the structural integrity of the semiconductor package.However,to evaluate thermal resistance,one must also measure the dissipated energy of the device(i.e.,the thermal load) and the k-factor.This is time consuming,and measurement errors reduce the accuracy.To overcome these limitations,an innovative approach,the relative thermal resistance method,was developed to reduce the measurement effort,increase accuracy and enable automatic data evaluation.This new way of evaluating data simplifies the thermal transient analysis by eliminating measurement of the k-factor and thermal load,i.e.measurement of the lumen flux for LEDs,by normalizing the transient Vfdata.This is especially advantageous for reliability testing where changes in the thermal path,like cracks and delaminations,can be determined without measuring the k-factor and thermal load.Different failure modes can be separated in the time domain.The sensitivity of the method is demonstrated by its application to highpower white In GaN LEDs.For detailed analysis and identification of the failure mode of the LED packages,the transient signals are simulated by time-resolved finite element(FE) simulations.Using the new approach,the transient thermal analysis is enhanced to a powerful tool for reliability investigation of semiconductor packages in accelerated lifetime tests and for inline inspection.This enables automatic data analysis of the transient thermal data required for processing a large amount of data in production and reliability testing.Based on the method,the integrity of LED packages can be tested by inline,outgoing inspection and the lifetime prediction of the products is improved.Alexander Han Maximilian Schmid E Liu Gordon Elger 2015Chinese Physics B2015,24,6:2
3Loss of caveolae,vascular dysfunction,and pulmonary defects in caveolin-1 gene-disrupted mice显示文摘Marek Drab Paul Verkade Marlies Elger Michael Kasper Matthias Lohn Birgit Lauterbach 2001Science2001,294,:1
4Indications of nonlin- ear deterministic and finite - dimensional structures in time series of brain electrical activity: Dependence on recording region and brain state显示文摘Ralph G Andrzejak Klaus Lehnertz Florian Mormann Christo- ph Rieke Peter David Christian E Elger 2001Physical Review E2001,64,06:1
5Antibodies against vascular endothelial growth factor improve early renal dysfunction in experimental diabetes显示文摘 Tilton RG Elger M 2001J Am Soc Nephro2001,112,:1
6Asoprisnil (J867):a selective progesterone receptor modulator for gynecological therapy显示文摘DeManno D Elger W Garg R 2003Steroids2003,68,:1
7Antibodies against vascular endothelial growth factor improve early renal dysfunction in experimental diabetes显示文摘De Vriese AS Tihon RG Elger M 2001J Am Soc Nephrol2001,12,:1
8Anticonvulsant pharmacology of voltage gated Na+ channels in hippocampal neurons of control ang chronically epileptic rats显示文摘Remy S Urban BW Elger CE 0,,02:1
9Conception and pharmacodynamic profile of drospirenone 显示文摘Elger W Beier S Pollow K 2003Steroids2003,68,10:1
10'Delayed securi- ty price adjustments to financial analysts' forecasts of annual earnings 显示文摘Elgers P T May H Lo Pfeiffer R J 2001The Accounting Review2001,28,:1
11Ground-based Measurement of Gradients in the Wet Radio Refrac- tivity of Air显示文摘Davis J Elgered G Niell A 1993Radio Sci1993,28,6:1
12Financial Characteristics Related to Managements' Stock Split and Stock Dividend Decisions显示文摘ELGERS P T MURRAY D 0,,:1
13Cognitive profile of topiramate as compared with lamotrigine in epilepsy patients on antlepileptie drug polytherapy: relationships to blood serum levels and eomedieation 显示文摘E Koekelmann CE Elger C Helmstaedter 2004Epilepsy & Behavior2004,5,5:1
14Asoprisnil(J867):a selective progesterone receptor modulator for gynecological therapy显示文摘DeManno D Elger W Garg R 2003Steroids2003,68,10:1
15Analysis of the polarization in a Li-ion battery cell by numerical simulations 显示文摘Nyman A Zavalis T G Elger R 2010Journal of the Electrochemical Society2010,157,11:1
16Loss of caveolae, vascular dys- function, and pulmonary defects in caveolin-1 gene-disrupted mice 显示文摘Drab M Verkade P Elger M 2001Science2001,293,5539:1
17Merger type and shareholder re- turns : Additional evidence 显示文摘Elgers P T Clark J J 1980Financial Management1980,9,2:1
18Chronic epilepsy and cognition显示文摘Elger CE Helmstaedter C Kurthen M 2004Lancet Neurology2004,3,11:1
19Adult-onselt epilepsy in focal cortical dysplasia of Taylor type 显示文摘Siegel AM Cascino GD Elger CE 2005Neurology2005,64,10:1
20Loss of caveolae, vascular dysfunction and pulmonary defects in caveolin-1 gene-disrupted mice 显示文摘Drab M Verkade P Elger M 2001Science2001,293,:1
返回顶部 每页显示:
共19页 首页 上一页 第1页 下一页 末页 /19 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费