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Estimation of groundwater flow system parameters using a modified Kalman filter approach
《Global Geology》1998年第1期120-120,共1页
关键词:FLOW Estimation of groundwater flow system parameters using a modified Kalman filter approach 
The reflection of the Lamb wave in a semi-infinite plate
《Chinese Journal of Acoustics》1990年第1期27-35,共9页SHEN Jianzhong, ZHANG Shouyu and YING Congfu(Institute of Acoustics, Academia Sinica) 
The Lamb wave technique is used in the detection of internal defects in plates. The reflection of the Lamb wave at the free edge of the plate has been shown to be rather complicated. The reflected wave is usually comp...
关键词:MODE The reflection of the Lamb wave in a semi-infinite plate WAVE 
一株真菌所产环缩酚酸肽类化合物的分离和鉴定
《华东理工大学学报(自然科学版)》2014年第1期58-64,共7页张明娥 熊智强 刘巧霞 杨迎迎 王勇 
国家重点基础研究发展计划(973计划)(2012AA02A701);国家自然科学基金(31170101;31100073);中科院知识创新项目(KSCX2-EW-J-12)
对一株真菌ZME及其所产的次级代谢产物进行分离鉴定。通过形态观察和ITS测序对真菌ZME进行菌株鉴定,并对其发酵液上清液和菌丝体分别用乙酸乙酯和甲醇萃取;萃取后的有机试剂粗提物经硅胶柱层析和半制备HPLC分离纯化;纯化后的各组分利用...
关键词:真菌ZME Isaridin B Isaridin A Roseocardin Roseotoxin B Destruxin B 
光栅信号直流电平的自动校正
《现代电子技术》2014年第5期67-69,共3页王骁 程志远 李婕 赵世芳 谭晓明 蒲忠胜 
在圆光栅作为分度基准的高精度测量仪器中,测量信号的稳定性直接影响到最终的测量精度。针对实际光栅信号不稳定性产生直流电平漂移的情况,在电子细分的基础上,采用了A/D和D/A转换器实时校正直流电平的方法,解决了实际光栅信号的直流电...
关键词:光栅 直流电平 漂移 A D和D A转换器 校正 
基于应变片的电子秤实验系统设计被引量:1
《电子世界》2014年第15期148-149,共2页葛东旭 杜政道 
本文介绍了一款基于应变片的数字显示电子秤实验系统的设计和制作,系统由传感器检测电路、检测信号放大电路、检测信号转换电路和显示电路组成。该设计是为了配合传感器相关教学来进行的,注重系统的模块化和输入输出的相对独立性。文中...
关键词:应变片 称重传感器 信号整理 A D转换 
Ultralow Specific on-Resistance Trench MOSFET with a U-Shaped Extended Gate
《Chinese Physics Letters》2015年第6期188-191,共4页王卓 李鹏程 张波 范远航 徐青 罗小蓉 
Supported by the National Natural Science Foundation of China under Grant No 61376079;the Fundamental Research Funds for the Central Universities under Grant No ZYGX2013J043
An ultralow specific on-resistance (Ron,sp) trench metal-oxide-semiconductor field effect transistor (MOSFET) with an improved off-state breakdown voltage (BV) is proposed. It features a U-shaped gate around the...
关键词:MOSFET UG Ultralow Specific on-Resistance Trench MOSFET with a U-Shaped Extended Gate RESURF 
Identfication of new naphthalenones from Juglans mandshurica and evalution of their anticancer activities被引量:8
《Chinese Journal of Natural Medicines》2015年第9期707-710,共4页GUO Li-Na ZHANG Rui GUO Xue-Ying CUI Tao DONG Wei HUO Jin-Hai WANG Wei-Ming 
supported by Major National Drug Program(No.2010ZX09102-138);the Innovation Fund for Youth Science and Technology in Harbin(No.2012RFQYS042)
Two new naphthalenone compounds were isolated from green walnut husks of Juglans mandshurica and their structures were identified as 4-butoxybutoxy-5,8-dihydroxy-3,4-dihydro-2H-naphthalen-1-one(1), 4-ethoxyethoxy-5,8-...
关键词:Juglanstetralone A Juglanstetralone B Walnut husk Juglans mandshurica Anticancer activity 
A case of essential thrombocythemia accompanied by acute myocardium infraction and gastrointestinal bleeding
《South China Journal of Cardiology》2015年第3期187-189,200,共4页丁焕宇 王玲 罗淞元 杨帆 罗建方 
supported by Guangdong Provincial Science and Technology Project(No.2013B031800024)
INTRODUCTION Essential thrombocythemia (ET) belongs to a family of related disorders characterized by uncontrolled cell growth, named myeloprolifer- ative diseases (MPD), including polycythemia- vera (PV) and p...
关键词:CASE A case of essential thrombocythemia accompanied by acute myocardium infraction and gastrointestinal bleeding MDS JAK CAG 
Enhancement of Virus Replication in An Influenza A Virus NS1-Expresssing 293 Cell Line
《Biomedical and Environmental Sciences》2016年第3期224-228,共5页ZHU Wu Yang TAO Xiao Yan LYU Xin Jun YU Peng Cheng LU Zhuo Zhuang 
supported by China Mega-Project for Infectious Disease(2014ZX10004002-004-001);National Natural Science Foundation of China(31500152);National Key Technology R&D Program(2014BAI13B04)
The nonstructural protein 1 (NS1) of influenza A virus, which is absent from the viral particle, but highly expressed in infected cells, strongly antagonizes the interferon (IFN)-mediated antiviral response. We en...
关键词:NS Enhancement of Virus Replication in An Influenza A Virus NS1-Expresssing 293 Cell Line IFN FIGURE 
An Analysis on the Causes and Solutions to ESL Teaching in Rural Areas of China
《教师》2016年第14期48-50,共3页张远艳 
It’ s obvious that ESL teaching programs are very important during the course of China’ s development. English has become a required course in schools. The purpose of this paper is to illustrate the factors that imp...
关键词:ANALYSIS English as a Second Language English teaching PROFICIENCY 
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