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Search Results: 1 - 10 of 298822 matches for " 隋之敏<br>ZHU Yuanzhi "
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新型橡胶铜复合多孔材料的制造方法及其吸声特性
Preparation of the novel rubber-copper porous composite and its acoustic absorption property

朱远志,朱凯麟,曲振林,刘 冉,彭 欢,<br>ZHU Yuanzhi,ZHU Kailin,QU Zhenlin,LIU Ran,PENG Huan,SUI Zhimin
- , 2018,
Abstract: 对200目橡胶粉和500目高纯无氧铜在高能行星式球磨机内进行20 min混料,混料后在模具中,在50℃温度下,在20 MPa压力下,压制成Φ 100 mm×5 mm的圆片,再通过选择性腐蚀方法,把其中的铜腐蚀掉,得到多孔橡胶材料.发现,多孔橡胶中存在大量20 μm以下的小孔以及少量尺寸大于100 μm的大孔.吸声系数试验表明,多孔橡胶对于不同频率的声波均有较好的吸收效果.
Modeling Study of Individual Element Classification on Land Resources
土地资源单要素计算机解译模式化研究

Zhu Boqin,Zhang Yuanzhi,<br>朱博勤,张渊智
遥感学报 , 1996,
Abstract: This paper describes the spectral properties of remote sensing data andtypical subject. Four geometrical structure types of pixel are discussed in detail, andthe causes of single subject-multispectral single spectral-multisubject are analyzed. Bythese researches the individual-element multi-level classification has been drawn out.Under the support of DTM, the test results of Xiangyang pilot are excellent.
多重降落PCR检测血流感染产ESBLs肠杆菌科细菌与MRSA方法的建立和应用
Establishment and application of multiplex touchdown PCR for detection of extendedspectrum βlactamasesproducing Enterobacteriaceae and methicillinresistant Staphylococcus aureus? in bloodstream infection

毕艳妮,振耿,宋宇,曲业,马淑青,孙梅,刘海珠<br>BI Yanni, SUI Zhengeng, SONG Yu, QU Yemin, MA Shuqing, SUN Mei, LIU Haizhu
- , 2015, DOI: 10.3969/j.issn.1671-9638.2015.10.004
Abstract: 目的探索一种可同时检测产超广谱β内酰胺酶(ESBLs)的肠杆菌科细菌与耐甲氧西林金黄色葡萄球菌(MRSA)的多重降落PCR方法。方法收集某院20l3年3月—2014年9月102份住院患者血培养阳性标本,针对产ESBLs肠杆菌科细菌的SHV、TEM、OXA基因和MRSA的MecA基因设计4对特异性引物,分别采用单一降落PCR和多重降落PCR对各耐药基因进行扩增,并将结果与药敏纸片法进行比较。结果各单一PCR均可扩增出特异性条带,并用多重降落PCR同时检测了4种耐药基因;建立的多重降落PCR对4种耐药基因(MecA、SHV、TEM、OXA)DNA的检测下限分别为4.37、2.19、4.53和3.59 ng。与药敏纸片法相比,多重降落PCR总灵敏度与特异性分别为100.00%、88.24%,检测ESBLs的灵敏度达100.00%,特异性为87.23%,检测MRSA的灵敏度和特异度均为100.00%。结论该实验建立的多重降落PCR具有高灵敏度与特异性,可用于产ESBLs肠杆菌科细菌和MRSA所致血流感染的快速诊断与流行病学调查,有利于指导临床使用抗菌药物
Study on Environmental Signification of Main Indexes of Loess
黄土不同指标的古环境意义探讨

SUI Yu-zhu,<br>玉柱
中国沙漠 , 2006,
Abstract: The Pengyang section situates in the desert-loess transitional zone on northwestern Loess Plateau.In premise of consideration of \!loess is also paleosol\" several environmental proxies related to soil-forming process have been tested,and a soil development index has been set up in this paper.Using the soil development index,the paleoclimatic change patterns with high resolution of the ecotone since 800 ka BP have been established,which revealed that the deserts expanded and approached the present region in about 820~810 ka BP, 700~680 ka BP,540~520 ka BP,390~360 ka BP,260~230 ka BP,120~110 ka BP and 40~30 ka BP.The northward movement of the subtropics took place in about 750~700 ka BP,500~450 ka BP and 110~100 ka BP.
A Database Designed and Built on the Assessment for the Loss of the Seismic Hazards: A Case Study in Tangshan Earthquake
地震灾害损失评估数据库的设计与建立──以唐山地震为例

Zhang Yuanzhi,Zhu Boqin,Wei ChenjieYu Tianxu,Zhang Zhongke,<br>张渊智,朱博勤,魏成阶,于天旭,张宗科
遥感学报 , 1996,
Abstract: The objective of this database for the seismic hazards is to develop techniques for assessing and analyzing the distribution of seismic hazards through the useof airborne remote sensing data and GIS techniques. It is helpful to provide theseismic hazard relief to the people in the earthquake-striken areas.The database in ILWIS and PC ARC/INFO is based on the airborne remotesensing data of Tangshan in 1976. It contains three steps: the first is to build thegeographic database supported by GIS, including the geographic coordinates,rivers, administrative areas, roads, railways, residential areas; the second is tobuild the seismic hazard database by using the real-time airborne remote sensingdata, like aerial photography, to classify the different levels of the damaged residential areas, roads, railways, and the surface rifts, etc.; the third is to producethe enveloped lines in the high intensity areas to assess the loss of the seismicbazards.
HOT DEFORMATION BEHAVIOR OF Ni76Cr19AlTi SUPERALLOY
Ni76Cr19AlTi合金的热变形行为

TENG Hao,YIN Zhimin,ZHU Yuanzhi,ZHOU Kechao,LI Zhiyoue,<br>滕浩,尹志民,朱远志,周科朝,李志友
金属学报 , 2006,
Abstract: 在Gleeble-1500热模拟机上对Ni76Cr19AlTi合金棒材进行恒温和恒速压缩变形实验,变形温度范围为80m-1150℃,应变速率范围为10^-3—10^0S^-1.结果表明,实验合金在800和850℃热压缩时变形抗力较大,容易发生开裂;而在950—1150℃温度范围内热变形由于发生动态再结晶,合金变形抗力减小,变形容易进行,不会发生开裂.研究了合金在高温塑性变形过程中流变应力的变化规律,确定了合金在950-1150℃范围内的变形激活能Q为376.84kJ/mol,应力指数n为4.15.对合金的热压缩变形真应力-真应变曲线及变形机制的分析表明,合理的变形条件为105m-1150℃及10^-1-10^0s^-1.
金属箔材轧制过程中第二相颗粒的尺寸效应研究
The size effect of different types of secondary particles in metallic foils during its foil rolling process

朱远志,范伟龙,刘 冉,夏程伟,李晓辉<br>ZHU Yuanzhi,FAN Weilong,LIU Ran,XIA Chengwei,LI Xiaohui
- , 2017,
Abstract: 金属箔材轧制时,箔材的厚度最小为几个微米.微米级甚至是亚微米量级尺寸的第二相颗粒都可能对基体的力学性能,甚至是箔材的表面形状造成影响.相对于基体而言,颗粒的软硬程度及其大小对轧制过程中箔材的影响是截然不同的.该文通过有限元模拟的方法研究了单个的硬质及软质第二相颗粒对箔材基体性能及形状的影响.论文中引入参量:颗粒直径/箔材厚度比(以下简称d/T).结果表明,箔轧时,相较于硬质颗粒而言,不同尺寸的软质颗粒对箔材的影响较大.第二相颗粒为软质颗粒时,应力集中程度及箔材表面变形程度随着颗粒尺寸的增大而增大,当d/T小于1/20时,第二相颗粒周边基体应力集中现象不明显;当d/T为1/20~1/5时,应力集中比较明显,箔材表面发生轻微变形;当d/T大于1/5时,基体中应力集中明显,箔材表面变形严重.第二相颗粒为硬质颗粒时,随着d/T的增加应力集中现象越不明显,基体表面几乎没有变形.
ROBUST ESTIMATION ALGORITHM FOR MRPs SATELLITE ALTITUDE DETERMINATION WITH WITHOUT GYRO
基于MRPs无陀螺卫星姿态确定的抗差估计算法

Mou Zhongkai,Sui Lifen,Cao Yizhi,<br>牟忠凯,立芬,曹轶
大地测量与地球动力学 , 2010,
Abstract: By using MRPs and dynamic equation for attitude representation and the propagation of angular velocity,UKF algorithm is applied for spacecraft attitude estimation in which measurement covariance is tuning in real time based on equal covariance and statistical properties of measurement error respectively.The two methods are validated by a simulated experiment which shows that the state estimation would become more stable for two robust UKF,and the latter one is more efficient.
Teleconnection Pattern between the Arctic Ice Area and the 500 hPa Geopotential Height Field during the Northern Hemispheric Summer
夏季北极海冰激发的500hPa遥相关型

Fang Zhifang,Tan Youbang,Sui Xuehai,<br>方,谭友邦,学海
大气科学 , 1991,
Abstract: In this paper, the correlation field between the Arctic ice area and 500 hPa geopotential height field, the one-point correlation maps at 500 hPa, and the 1000-500 hPa thickness difference chart between the strongest arctic ice year and the weakest year for July and August (etc.)are analyzed.According to the foregoing statistical discussion, it may be noted: the arctic ice cold source in summer can be forcing the teleconnection pattern in the northern hemispheric atmosphere. The teleconnection pattern has two-dimensional Rossby wave train and equivalent barotropic structure.The centers of action in the teleconnection pattern can across the westerly jet and into the subtropics, but they only exist in the westerly belt.The teleconnectin pattern effects the atmospheric circulation and weather showing the polar ice being excessive, the polar low pressure being stengthened, the Canada ridge and the Northern American trough being strengthened too, and vice versa.
DETECTING CYCLE SLLIPS IN GPS SINGLE FREQUENCY CARRIER PHASE USING AN ADAPTIVE FILTER
一种单频GPS周跳探测的自适应滤波算法

Cao Yizhi,Sui Lifen,Wang Wei,<br>曹轶,立芬,王威
大地测量与地球动力学 , 2009,
Abstract: Using a two-stage adaptive filter with GPS Doppler measurments to estimate L1 carrier phase,and then the whitening residuals of L1 carrier phase can be obtained comparing it with the actual carrier phase measuments,and considering time correlation of high-rate GPS carrier phase measuments error.Finally,by using the whitening residuals the cycle slips in GPS single frequency carrier phase will be detected and repaired.The method is fit for high-rate single frequency GPS data.A test using 1 Hz dynamic GPS dat...
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