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MECHANICS OF RELAXING SiGe ISLANDS ON A VISCOUS GLASS

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Acta Mechanica Sinica 2002年第5期18卷 441-456页

作者： R. Huang H. Yin j. Liang j. C. Sturm k. D. Hobart Z. Suo Mechanical and Aerospace Engineering Department and Princeton Materials Institute Princeton University Princeton USA Department of Aerospace Engineering and Engineering Mechanics University of Texas at Austin Austin USA Center for Photonics and Optoelectronic Materials and Department of Electrical Enineering Princeton University Princeton USA Naval Research Laboratory Washington DC USA

A process has been developed recently to fabricate a structure com- prising,from top to bottom,a SiGe thin film,a glass layer,and a Si *** SiGe film is a perfect crystal,and is under biaxial *** SiGe film is patterned into *** annealing,the glass flows and the islands *** resulting strain-free islands are used as substrates,to grow epitaxial optoelectronic *** article describes a series of studies on the annealing process,combining experiment and theory.A small island relaxes by expansion,starting at the edges and diffusing to the center.A large island wrinkles before the expansion reaches the *** some time,the wrinkles either disappear,or cause the island to fracture. We model the island as an elastic plate,and the glass layer as a viscous *** strains in the islands are measured by X-ray diffraction and Raman spectroscopy,and the wrinkle amplitudes by atomic force *** data are compared with the theoretical *** determine the conditions under which the islands relax by expansion without significant wrinkling,and demonstrate that a cap layer suppresses wrinkles,relaxing a large island crack-free.

关键词： semiconductor fabrication stress relaxation viscous flow elastic plate fracture

Mechanism underlie ischemic preconditioning impairing leukotriene C4 production in hepatic ischemia reperfusion injury rats

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Mechanism underlie ischemic preconditioning impairing leukot...

FATIGUE LIVES FOR INDUCTION HARDENED SHAFTS MATERIALS ACCORDING TO THE ENVIRONMENTAL TEMPERATURES

2012国际生理学学术大会

作者： Hong ff Fang j Zhou Y Hu Mj Xie Lj He D Yang SL Department of Physiology College of MedicineNanchang University Department of Experimental Teaching Nanchang University Department of Histology and Embryology College of MedicineNanchang University College of Medicine Nanchang University

＜正＞Our previous report indicates that hepatic ischemia reperfusion（I/R） injury related to abnormal increased leukotriene（LT） C4 *** we investigated mechanism underlying ischemic preconditioning （IP） effects on the LTC4 production in hepatic I/R injury *** male SD rats were randomly divided into sham,I/R and IP *** liver was subjected to 1 h of partial hepatic ischemia followed by 5 h of reperfusion with saline administered *** protein expressions of the leukotriene C4 synthase（LIC4S） was detected with western blotting,the LTC4 synthesis enzymes’ activities and LTC4 content were measured by RPHPLC. Serum NO2- and liver tissue GSH were also examined by biochemical *** noted that IP markedly decreased LTC4 content and inhibited LTC4S protein expression and the LTC4 synthesis enzymes’ activities in rat liver when compared with I/R group（P＜0.05）.The decline in serum NO2-（P＜0.05） and the elevation in hepatic tissue GSH（P＜0.05） in IP groups were also *** LTC4S positive expressions on hepatocytes and sinusoidal endothelial cells in IP group were significantly lower than that in I/R *** findings firstly demonstrate that the reduced LTC4 production by IP treatment during hepatic I/R injury could be partially resulted from the down-regulation of LTC4S protein expressions and the depression of LTC4 synthesis enzymes’ activities, which may involve its reducing NO and stabilizing redox state during hepatic I/R in rats.

关键词： ischemia preconditioning cysteinyl leukotrienes liver

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Acta Metallurgica Sinica(English Letters) 2005年第5期18卷 585-593页

作者： D.G. Lee k.C. jang j.M. kuk I.S. kim korea Institute of Industrial Technology Gwangju 506-824 Korea Dept. of Mechanical Engineering Mokpo National University Mokpo 534-729 Korea

Rotary bending fatigue tests were carried out with two kinds of materials, S43C and S50C, using the front engine and front drive shaft （ff shaft） of vehicle. The specimens were induction hardened about 1.0mm depth from the specimen surface, and the hardness value on the surface was about HRC56-60. The tested environment temperatures were -30, 25 and 80℃ in order to look over effect of the induction hardening and the environmental temperatures on the fatigue characteristics. The fatigue limit of induction hardened specimens increased more about 45% than non-hardened specimens showing that the endurances of S43C and S50C were 98.1 and 107.9MPa in non-hardened samples, 147.1 and 156.9MPa in hardened samplesrespectably. The maximum tensile and compressive stress on the small circular defect was about ＋250 and -450MPa respectively when circular defect is situated on top and bottom. The fatigue life increased 80, 25 and -30℃ in order regardless of hardening. In comparison of the fatigue lives on the basis of tested result at 25℃, the fatigue lives of non-hardened specimens decreased about 35%, but that of hardened specimens decreased about only 5% at 80℃ more than at 25℃. And fatigue life of non-hardened and hardened specimens were about 110% and 120% higher at -30℃ than that of 25℃. Based on the result of stress distribution near the defect, the tensile and compressive stress repeatedly generated by load direction were the largest on the small circular defect due to the stress concentration.

关键词： induction hardening fatigue test front engine and front drive shaft,fatigue crack fatigue life fatigue life ratio

Relationship between Antiphospholipid Syndrome and Placenta Previa

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Relationship between Antiphospholipid Syndrome and Placenta ...

一项比较有氧间断锻炼与中度持续锻炼对心力衰竭患者的心血管效应的随机研究

2011中国妇产科学术会议暨浙江省计划生育与生殖医学学术年会暨生殖健康讲习班

作者： Xiong j,Zhu ff,Yang LQ Department of Obstetrics & Gyneocology,the Second Xiangya Hospital of Central South University,Changsha,Hunan, 410011,China

This paper studied the relationship between Antiphospholipid syndrome(APS) and placenta *** 180 cases of pregnant women with APS and compared them with other 300 normal pregnant women(chosen randomly) during the period from August 2007 to March *** samples were taken to assess the rate of placenta previa for the pregnant women with and without *** pregnant results were compared between the group of women with placenta previa intercurrent APS and the group of women only with placenta *** found the rate of placenta previa in APS pregnant women were significantly higher than that in normal pregnant *** premature labor and flooding in APS pregnant women were also significantly higher than in normal *** should diagnose and treat as early as possible the APS to improve the results of pregnancy.

关键词： Antiphospholipid syndrome Placenta previa pregnant results

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世界核心医学期刊文摘（心脏病学分册） 2007年第10期3卷 41-42页

作者： Wislφff U. Stφylen A. Loennechen j.P. 杜媛 Department of Circulation and Medical Imaging Norwegian University of Science and Technology Olav kyrres gt. 9 7489 Trondheim Norway Dr.

背景:运动锻炼可以减轻慢性心力衰竭的症状。然而何种强度的锻炼可以产生最大益处仍具争议。此外,慢性心力衰竭的发病率随年龄增长而增加;据报道,首次诊断为慢性心力衰竭的患者中,有88%>65岁,

关键词：心力衰竭有氧中度左室射血分数患者锻炼

UNIVAC—LARC的高速线路——线路最佳化的经过

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电子计算机动态 1962年第3期 12-24页

作者： N·S·Prywes H·Luk ff j·Schwarz 苏振泽刘玉

引言近五年来,由于计算系统变得这样庞大复杂,计算机线路的设计已经发生了重大变化。现今的计算机线路设计者不仅应精通电子学线路,而且还应熟悉逻辑设计、所使用元件的物理性质及其生产方法。设计者必须比以前更加

关键词：最大延迟晶体管关阴通导最大相位半导体三极管最优化最佳化 LARC UNIVAC 噪声语音噪音方程方程式静算晶体三极管求和器加法器

Basin Geomorphology and Drainage Morphometry Parameters Used as Indicators for Groundwater Prospect: Insight from Geographical Information System(GIS) Technique

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journal of Earth Science 2014年第6期25卷 1018-1032页

作者： kumar Avinash B Deepika k S jayappa National Centre for Antarctic & Ocean Research Department of Marine Geology Mangalore University

Influence of structural and lithological controls of various drainage patterns and their stream orientations（for 2nd, 3rd and 4th order steams） were identified to evaluate the direction and controlling factors of drainage network. To investigate the prospect of groundwater, hydrogeomorphological features of river basin viz. Mulki-Pavanje were identified and mapped. To evaluate the characteristics of the basin, different morphometric parameters（linear, areal and relief） were computed in sub-basin wise（SB-I to-VII）. The linear parameters suggest drainage network is controlled by geomorphology. The form factor（ff）, elongation ratio（Re） and circularity ratio（Rc） suggest that the basin is in an elongated shape. The drainage density（Dd） indicates resistant/permeable strata under medium-dense vegetation with moderate relief. The areal parameters of the sub-basins（except SBI and Ⅲ） indicates moderate ground-slopes associated with moderately permeable rocks, which promote moderate run-off and infiltration. Drainage texture（T） of the whole basin indicates coarse texture while the SB-I, and Ⅲ showing an intermediate texture. The relief parameters namely ruggedness number（Rn） infers low basin relief and poor drainage density. To identify the most deficit/surplus zones of groundwater suitable weightages were assigned to the hydrogeomorphological units and morphometric parameters. The study reveal that the basin manifest that SB-Ⅲ shall be most deficit zone of groundwater, whereas SB-VII, VI and V are found to show increase in groundwater potentiality. Groundwater prospect area in this basin is estimated to be 7% area under poor, 44% area under moderate and 49% area under good to excellent. This paper demonstrated the potential application of geographical information system（GIS） techniques to evaluate the groundwater prospect in absence of traditional groundwater monitoring data.

关键词： hydrogeomorphology drainage morphometry prioritization groundwater prospect Mulki-Pavanje River Basin remote sensing

缺血性脑卒中后3个月内脉压与长期脑卒中结局相关

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中华高血压杂志 2018年第8期26卷 798-798页

作者： Su N Zhai ff Ni j Zhou LX Yao M Peng B Zhu YC Cui LY 陈云

脉压是动脉僵硬度的替代指标。有关脑卒中患者基线脉压和长期结局的研究有限。本研究的目的是评估缺血性脑卒中后3个月内的脉压是否与脑卒中长期结局相关。方法：研究对象为4195例首发缺血性脑卒中患者[（61.2±11.6）岁,68.4%为男性],... 详细信息

脉压是动脉僵硬度的替代指标。有关脑卒中患者基线脉压和长期结局的研究有限。本研究的目的是评估缺血性脑卒中后3个月内的脉压是否与脑卒中长期结局相关。方法：研究对象为4195例首发缺血性脑卒中患者[（61.2±11.6）岁,68.4%为男性],且在3个月内测量过基线血压。

关键词：脑卒中结局脑卒中后缺血性脉压脑卒中患者动脉僵硬度基线

Characterization of multi-GNSS between-receiver differential code biases using zero and short baselines

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Science Bulletin 2015年第21期60卷 1840-1849页

作者： Baocheng Zhang Peter j.G.Teunissen Global Navigation Satellite System (GNSS) Research Centre Curtin University Geoscience and Remote Sensing Delft University of Technology

Care should be taken to minimize adverse impact of receiver differential code biases(DCBs) on global navigation satellite system(GNSS)-derived ionospheric parameters. It is therefore of importance to ascertain the intrinsic characteristics of receiver DCBs,preferably in the context of new-generation GNSS. In this contribution, we present a method that enables time-wise retrieval of between-receiver DCBs(BR-DCBs) from dualfrequency, code-only measurements collected by a pair of co-located receivers. This method is applicable to the US GPS as well as to a new set of GNSS constellations including the Chinese Bei Dou, the European Galileo and the japanese QZSS. With the use of this method, we determine the multi-GNSS BR-DCB time-wise estimates covering a time period of up to 2 years(january 2013–March 2015) with a 30-s time resolution for five receiverpairs(four zero and one short baselines). For the BR-DCB time-wise estimates pertaining to an arbitrary receiver-pair and constellation, we demonstrate their promising intraday stability by means of statistical hypothesis testing. We also find that the Bei Dou BR-DCB daily weighted average(DWA) estimates show a dependence on satellite type, in particular for receiver-pairs of mixed types. Finally, we demonstrate that long-term variability in BR-DCB DWA estimates can be closely associated with hardware temperature variations inside the receivers.

关键词： Global navigation satellite system(GNSS) Total electron content (TEC) Between-receiver differential code bias (BR-DCB) BeiDoucode inter-satellite-type-bias (ISTB)