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检索条件："关键词=instability "
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Evolution of Instability before and during a Torrential Rainstorm in North China被引量：2
《Advances in Atmospheric Sciences》2016年第1期110-120,共11页Lu LIU Lingkun RAN Shouting GAO 
supported by the National Natural Science Foundation of China (Grant Nos. 41175060 and 41375052);the Key Program of the Chinese Academy of Sciences (Grant No. KZZD-EW-05);the National Basic Research Program of China (Grant No. 2013CB430105);the State Key Laboratory of Severe Weather (LASW),Chinese Academy of Meteorological Sciences (Grant No. 2013LASW-A06)
NCEP-NCAR reanalysis data were used to analyze the characteristics and evolution mechanism of convective and symmetric instability before and during a heavy rainfall event that occurred in Beijing on 21 July 2012.Appr...
关键词：convective instability symmetric instability torrential rain potential divergence 
The criterion of gravity wave instability induced by photochemistry in summer polar mesopause region
《Science China Earth Sciences》2002年第6期512-520,共9页徐寄遥 傅利平 吴永富 王咏梅 
This work was supported by the National Research Project (Grant No. 2000078407) ; the National Natural Science Foundation of China (Grant No. 49974038).
This paper studies the effect of photochemistry on the gravity wave instability in summer polar mesopause region. The calculation method of the effects of eddy viscosity, conductivity and eddy diffusion of chemical sp...
关键词：GRAVITY wave  instability  PHOTOCHEMICAL reaction. 
Characterization of six tumorsuppressor genes and microsatellite instability in hepatocellular carcinomain southern African blacks被引量：21
《World Journal of Gastroenterology》1999年第6期470-476,共7页Martins C Kedda MA Kew MC 
AIM To analyse cumulative loss of heterozygosity (LOH) of chromosomal regions and tumor suppressor genes in hepatocellular carcinomas (HCCs) from 20 southern African blacks. METHODS p53, RB1, BRCA1, BRCA2, WT1 and E c...
关键词：carcinoma  hepatocellular southern African BLACKS CUMULATIVE LOH TUMOR SUPPRESSOR genes MICROSATELLITE genomic instability liver neoplasms 
Stability and control of room mining coal pillars-taking room mining coal pillars of solid backfill recovery as an example被引量：12
《Journal of Central South University》2017年第5期1121-1132,共12页ZHANG Ji-xiong HUANG Peng ZHANG Qiang LI Meng CHEN Zhi-wei 
Project(2014ZDPY02)supported by the Fundamental Research Funds for the Central Universities
The stability of room mining coal pillars during their secondary mining for recovering coal was analyzed. An analysis was performed for the damage and instability mechanism of coal pillars recovered by the caving mini...
关键词：ROOM MINING stability of COAL PILLARS COAL MINING of SOLID BACKFILL ultimate strength instability failure 
干冷空气入侵台风“海棠”残余低压引发的华北地区大暴雨分析被引量：12
《暴雨灾害》2020年第3期241-249,共9页陈宏 杨晓君 尉英华 易笑园 杨洋 刘一玮 徐威 
国家自然科学基金项目(41575049);天津市自然科学基金项目(16JQNJC07500);天津市气象局局项目(202007ybxm04);预报员专项(CMAYBY2020-008)。
利用地面逐小时观测资料、NCEP/NCAR(1°×1°)再分析资料、FY-2F卫星加密观测(6 min分辨率)的云顶亮温(TBB)和常规观测资料,对1710号台风"海棠"残余低压北上与冷空气结合导致华北东部大暴雨天气过程进行分析。结果表明:(1)该华北东部...
关键词：气旋 中尺度系统 干侵入 位涡 不稳定 
Estimation of the horizontal in-situ stress magnitude and azimuth using previous drilling data被引量：1
《Petroleum》2023年第3期352-363,共12页Masoud Ziaie Mohammad Fazaelizadeh Abbas Ayatizadeh Tanha Ali Sharifzadegan 
Oil exploration and production,well stability,sand production,geothermal drilling,waste-water or CO_(2) sequestration,geohazards assessment,and EOR processes such as hydraulic fracturing,require adequate information a...
关键词：Well instability Lost circulation Drilling induced tensile fracture Image log In-situ stress Horizontal stress direction 
New results on finite-time stability and instability theorems for stochastic nonlinear time-varying systems
《Science China(Information Sciences)》2025年第2期182-195,共14页Weihai ZHANG Liqiang YAO 
supported by National Natural Science Foundation of China(Grant No.62373229);Shandong Provincial Natural Science Foundation of China(Grant No.ZR2020MA033);Research Fund for the Taishan Scholar Project of Shandong Province of China。
This paper studies finite-time stability and instability theorems in the probability sense for stochastic nonlinear timevarying systems.Firstly,a new sufficient condition is proposed to guarantee that the considered s...
关键词：stochastic nonlinear systems finite-time stability finite-time instability uniformly asymptotically stable function 
Microsatellite instability in gastric cancer and pre-cancerous lesions被引量：7
《World Journal of Gastroenterology》2005年第31期4904-4907,共4页Ping Liu Xiao-Yong Zhang Yun Shao Dao-Fu Zhang 
Supported by the Science and Technology Committee Foundation of Jiangsu Province, No. BS98028
AIM: To investigate the microsatellite instability (MSI) in cancer and pre-cancerous lesions of the stomach and its mechanisms underlying the development of gastric cancer.METHODS: Thirty-six gastric cancer samples we...
关键词：Stomach neoplasms Gastric dysplasia Intestinal metaplasia Microsatellite instability PCR-SSCP 
异常情况时的Liapunov-Kozlov法
《应用数学和力学》2011年第9期1127-1138,共12页V·乔维奇 D·久里奇 M·韦仕科尉克 A·奥布拉德维克 吴承平(译) 
塞尔维亚共和国科学和技术发展部基金资助项目(ON174004;ON174016;TR335006)
Kozlov将Liapunov第一方法推广到非线性力学系统,用来研究保守力和耗散力场中,运动力学系统平衡位置的不稳定性.在平衡位置分析惯性张量的异常,或者Rayleigh耗散函数系数矩阵的异常.在稳定性分析中,实际上不可能应用Liapunov逼近法,因...
关键词：不稳定性 异常情况 渐近运动 有势力 耗散力 
Toroidicity and shape dependence of peeling mode growth rates in axisymmetric toroidal plasmas
《Chinese Physics B》2014年第7期529-535,共7页石秉仁 
supported by the National Magnetic Confinement Fusion Science Program of China(Grant No.2009GB101002)
The growth rate of the peeling mode instability with large toroidal mode number is calculated for general axisymmetric toroidal plasmas, including tokamaks and the spherical toms （ST） equilibia by using formalism pr...
关键词：peeling instability D-shape and inverse D-shape configurations todoidicity dependence 
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