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Research on Electric Impedance Spectroscopy of Living Cell Suspensions by a Chip with Microelectrodes

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稀有金属材料与工程 2006年第S3期 429-432页

作者： Xing Yang~(1,2.3) Zhaoying Zhou~(1,2.3) Mingfei Xiao~(1,2.3) Ying Wu~(1,2.3) Shangfeng Liu~4 (1.MEMS lab.,Department of Precision Instruments & Mechanology,Tsinghua university,{2. 100084,China) (2.Micro-Nano Technology Research {2.,Tsinghua university,{2. 100084,China) (3.State Key laboratory of Precision Measurement Technology and Instruments,Tsinghua university,{2. 100084,China) (4.School of Medicine,Tsinghua university,{2. 100084,China)

A microfabricated electrical impedance spectroscopy (EIS) chip with microelectrodes was *** substrate and the electrodes of the chip were made of glass and gold,*** experimental results demonstrated that the EIS-chip could distinguish different solutions (physiological saline,culture medium,living cell suspension etc.) by scanning from 10Hz to 45kHz.A 6-element circuit model was used for fitting the real part and the imaginary part admittance curves of the living cell *** actual circuit was also built and tested to verify the 6-element circuit model *** micro-EIS chip has several advantages including the use of small sample volumes,high resolution and ease of *** shows good application prospects in the areas of cellular electrophysioiogy,drug screening and bio-sensors etc.

关键词： electrical impedance spectroscopy(EIS) microelectrode living cell suspension 6-element

geological Causes of Permeability Heterogeneity in a Fractured Sandstone-Mudstone Rock Mass in the Xiaolangdi Dam Site,Central China

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地学前缘 2009年第S1期16卷 16-17页

作者： Xiaowei Jiang~1,Wan Li~1,Xusheng Wang~1,Aibin Kang~1,Jun Huang~(2.3),Guoxing Huang~1 1.School of Water Resources & Environment,China university of geosciences({2.),{2. 100083,China. 2.Research center of Tunneling and Underground Engineering,{2. Jiaotong university,{2. 100044,China 3.China Highway Planning and Design Institute(HPDI) Consultants,INC,{2. 100010,China

Heterogeneity of permeability in fractured media is a hot research topic in hydrogeology and numerous approaches had been proposed to characterize heterogeneity in the past several ***。

关键词： fractured media permeability heterogeneity declustering distribution of mudston

A Modified Integrated Model of the Internal Structure of Chinese Cultured Pearls

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Journal of Wuhan university of Technology(Materials Science) 2011年第3期26卷 510-513页

作者：马红艳 Key laboratory of Nonferrous Metals and New Material Processing Technology Ministry of EducationCollege of Materials Science and EngineeringGuangxi University

Optical and micro-infrared microscope were used to observe the internal structure and mineral composition of high and low quality Chinese seawater and freshwater cultured *** clearly reveal that aragonite and calcite are found in seawater cultured pearls,but vaterite is not *** contrast,vaterite and aragonite are found in freshwater cultured pearls,but calcite is not *** on our analysis and observations of the internal structure of high and low quality cultured pearls,a modified integrated model of the internal structure of Chinese cultured pearls was *** revisions to the previous model focus on significant differences within the prismatic layer of Chinese cultured pearls.

关键词： cultured pearls aragonite vaterite calcite integrated model

Delineation of Potential Mineral Resources RegionBased on Geo-anomaly Unit

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Journal of Earth Science 2000年第2期19卷 66-71页

作者： Chen Yongqing Faculty of Earth Resources, China university of geosciences, Wuhan 430074 The {2. for Development and Research, China geological Survey, beijing 100083 Liu Hongguang Faculty of Earth Resources, China university of geosciences, Wuhan 4

The geological anomaly unit method (GAUM) is a new way to delineate and evaluate ore finding targets in line with the “geological anomaly ore finding theory”. Comprehensive ore finding information from geological, geochemical and geophysical data is used for quantitative measurement of the “ore forming geological anomaly unit” in this paper. The main procedures are shown as follows: (1) The geo anomalous events associated with gold mineralization are analyzed in Tongshi gold field; (2. The zonation in the concentrated heavy minerals and the stream sediment elements of ore forming geo anomaly are studied in detail; (3) The deep geological structural framework is deduced by means of the synthetic geological interpretation of gravity and magnetic information; (4) The ore controlling geo anomalies and ore anomalies are chosen as the variables of the favorable ore forming indexes that can be used for the quantitative delineation and evaluation of the potential ore forming regions.

关键词： ore forming geo anomaly unit mineral resources areas comprehensive ore forming information favorable ore forming index Tongshi gold field western Shandong Province Eastern China.

STUDY OF Ag DIFFUSION INTO Cu SINGLE CRYSTALS BY RUTHERFORD BACKSCATTERING SPECTROMETRY

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Acta Metallurgica Sinica(English Letters) 2003年第5期16卷 332-334页

作者： R.Wang 1) Key laboratory of Beam Technology and Materials Modification, Ministry of Education, beijing 100875, China2. Institute of Low Energy Nuclear Physics, beijing Normal {2., beijing 100875, China3) beijing Radiation center, beijing 100875, China lab. of Beam Technol. Inst. of Low Energy Nucl. Phys. Beijing Normal Univ. Beijing 100875 China beijing Radiation Ctr. Beijing 100875 China

4.0Me V 7Li++ RBS was used for investigations of thermal diffusion of Ag in Cu single crystals. The annealing of samples was carried out in vacuum in the temperature range from 498K to 613K. The element depth concentration profiles transformed from RBS spectra indicate that the diffusion of Ag into Cu is a typical volume diffusion. The Arrhenius parameters corresponding to the diffusion were obtained.

关键词： Ag diffusion single crystal

Accelerating Oil and Gas Exploration in Western China by Studies of Formations of Hydrocarbon Accumulations in Superimposed Basins—A Preface

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Acta Geologica Sinica(English Edition) 2010年第5期 5-6页

作者： PANG Xiongqi~(1,2. 1 State Key laboratory of Petroleum Resource and Prospecting,China university of Petroleum,{2. 102.49 2.Basin and Reservoir Research {2.,China university of Petroleum,{2. 102.49

The superimposed basins in the western region of China are a hot research topic for earth scientists home and abroad for their vast area and rich oil and gas *** complex geological conditions and resultant great exploration difficulties have received much attention of the *** issue presents the advances of several scholars in their long-term research on the mechanisms of oil and gas accumulation and the patterns of oil and gas *** studies are part of the National 973 Project entitled "Mechanism of Oil and Gas Accumulation and

关键词： A Preface Accelerating Oil and Gas Exploration in Western China by Studies of Formations of Hydrocarbon Accumulations in Superimposed Basins

Modified vegetation-erosion dynamics model and its application in typical watersheds in the Loess Plateau

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International Journal of Sediment Research 2011年第1期26卷 78-86页

作者： CHEN Yuehong~1,WANG Feixin~2.LIU Guangquan~3,YU Xinxiao~4, JIA Guodong~5,and GAN Ping~6 China Institute of Water Resources and Hydropower Research,beijing 100048 International Research and Training center on Erosion and Sediment Research,beijing 100048,China beijing Forestry university,beijing 100083,China. Key lab of Dredging Technology of CCGRP,Shanghai Waterway Engineering Design and Consulting Co., Ltd,Shanghai 2.012.,China. International Research and Training center on Erosion and Sedimentation China Institute of Water Resources and Hydropower Research,beijing 100048 Northwest A&F university,Yangling 712.00,China, beijing Forestry university,beijing 100083,China, beijing Forestry university,beijing 100083,China. China Institute of Water Resources and Hydropower Research,beijing 100048,and International Research and Training center on Erosion and Sediment Research,beijing 100048,China Assoc. Prof. Dr. China Institute of Water Resources and Hydropower Research Beijing 100048 International Research and Training center on Erosion and Sediment Research Beijing 100048 China beijing Forestry university Beijing 100083 China Dr. Key Lab of Dredging Technology of CCGRP Shanghai Waterway Engineering Design and Consulting Co. Ltd Shanghai 200120 China Prof. Dr. International Research and Training Center on Erosion and Sedimentation China Institute of Water Resources and Hydropower Research Beijing 100048 Northwest A&F university Yangling 712100 China Prof. Dr. Beijing Forestry University Beijing 100083 China Dr. Beijing Forestry University Beijing 100083 China Engineer China Institute of Water Resources and Hydropower Research Beijing 100048 and International Research and Training Center on Erosion and Sediment Research Beijing 100048 China

The vegetation-erosion model was applied in three typical watersheds of hilly and gully area in the Loess Plateau in northwestern China to study the dynamic relations between vegetation coverage and soil erosion rate and various *** model was improved by introducing rainfall and runoff *** the modified model was applied in the Luergou and Luoyugou *** calculation results with the modified model were compared with the results of the original *** precisions of simulated vegetation coverage and soil erosion rate with the modified model were greatly improved compared with the original *** erosion rate reduced with increasing vegetation coverage and the human disturbance caused high soil erosion.

关键词： Soil erosion Vegetation coverage Vegetation-erosion dynamics model Loess Plateau Modified model

Geochemistry of UHP metamorphic rocks from the CCSD-main hole （0 - 2.50 m）, Sulu orogenic belt, Eastern China

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Geochemistry of UHP metamorphic rocks from the CCSD-main hol...

Admission Control with Elastic QoS for Video on Demand Systems

2.04年全国岩石学与地球动力学研讨会

作者： Zhang Zeming, Xu Zhiqin and Liu Fulai~1, Xiao Yilin~2. Liou J G ( Dept. of geological and Environmental Sciences, Stanford university) and Jahn Bor-ming~3 (1. Institute of Geology, CAGS, {2. 100037 2. Geoscience center, Geottingen university 3. Department of geosciences, National Taiwan university)

＜正＞ The Chinese Continental Scientific Drilling （CCSD） located near Maobei village, about 17 km southwest of Donghai, is targeted to drill a 5000-meter-deep main hole penetrating a tectonic slab of UHP metamorphic rocks. This project provides an advantageous and rare chance of collecting UHP rock samples continuously from the subsurface. The 0-2.50 m of the CCSD-main hole consists of eclogite, orthogneiss, paragneiss, ultramafic rock and minor schist and quartzite. Eclogites are the principal lithological type, and mainly occur at

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International Journal of Automation and computing 2012年第5期9卷 467-473页

作者： Fu-Shou Lin 1 Bao-Qun Yin 1,2.Jing Huang 1 Xu-Min Wu 1 1 Key lab of Anhui Network Communication System and Control, university of Science and Technology of China, Hefei 2.002., China 2.National Network New Media Engineering Research {2., Institute of Acoustics, Chinese Academy of Science, {2. 100190, China Key lab of Anhui Network Communication System and Control University of Science and Technology of China Hefei China National Network New Media Engineering Research center Institute of Acoustics Chinese Academy of Science Beijing China

In network service systems, satisfying quality of service (QoS) is one of the main objectives. Admission control and resource allocation strategy can be used to guarantee the QoS requirement. Based on partially observable Markov decision processes (POMDPs), this paper proposes a novel admission control model for video on demand (VOD) service systems with elastic QoS. Elastic QoS is also considered in resource allocation strategy. Policy gradient algorithm is often available to find the solution of POMDP problems, with a satisfactory convergence rate. Through numerical examples, it can be shown that the proposed admission control strategy has better performance than complete admission control strategy.

关键词： Partially observable Markov decision processes (POMDPs) admission control resource allocation elastic quality of service (QoS) policy gradient