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Current developments of research on permafrost engineering and cold region environment:a report of the 8^(th) International Symposium on Permafrost Engineering

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research in Cold and Arid Regions 2010年第2期2卷 93-103页

作者： FuJun Niu 1,2.GuoYu Li 1,ShuPing Zhao 1,ShuJuan Zhang 1,YongGuo Zhao 2.HuiJun Jin 1 1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering research Institute,Chinese Academy of Sciences,Lanzhou,Gansu Province 730000,china 2.Key Laboratory of Highway Construction and Maintenance Technology for Permafrost Regions of Ministry of {2.,CCCC First Highway Consultants Co.,Ltd.,Xi’an,Shaanxi Province 710068,china State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of ScieneesLanzhouGansu Province 730000China Key Laboratory of Highway Construction and Maintenance Technology for Permafrost Regions of Ministry of communications CCCC First Highway Consultants Co.Ltd.Xi'anShaanxi Province 710068China State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of ScieneesLanzhouGansu Province 730000China Key Laboratory of Highway Construction and Maintenance Technology for Permafrost Regions of Ministry of communications CCCC First Highway Consultants Co.Ltd.Xi'anShaanxi Province 710068China

The Eighth International Symposium on Permafrost Engineering was held in Xi’an,china,October *** major topics discussed in the symposium included:permafrost engineering (involving design,construction and evaluation);mitigation of frost hazards in the regions affected by seasonally frozen ground;properties of frozen soils,model development and their applications;frost hazards and periglacial environments in mountain and plateau regions;climatic,environmental and cryospheric changes;and permafrost hydrology,cold regions water resources and land *** papers submitted to the symposium and lectures during the meeting represented some new developments of {2. on cold region engineering and *** we summarized the works of the symposium in topics including:Permafrost engineering;General geocryology;Properties of frozen soils:model development and their applications;And climatic,environmental and cryospheric *** the symposium,the attendees pointed out that future studies should pay more attention to theoretical study and engineering mechanism study,and also on interaction between climate change and cold region environments and their engineering affects.

关键词： the 8th symposium permafrost engineering cold region environment summarizing

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Dusty cloud radiative forcing derived from satellite data for middle latitude regions of East Asia

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Progress in Natural Science:Materials International 2006年第10期16卷 1084-1089页

作者： HUANG Jianping , WANG Yujie, WANG Tianhe and YI Yuhong ( College of Atmospheric Sciences, Lanzhou university, Lanzhou 730000, china Gansu Provincial Meteorological Bureau, Lanzhou 73002., china) [a]College of Atmospheric Sciences Lanzhou University Lanzhou China [b]Gansu Provincial Meteorological Bureau Lanzhou China

The dusty cloud radiative forcing over the middle latitude regions of East Asia was estimated by using the 2.year (July 2.02.June 2.04) data of collocated clouds and the Earth's radiant energy system (CERES) scanner and moderate resolution imaging spectroradiometer (MODIS) from Aqua Edition IB SSF (single scanner footprint). The dusty cloud is defined as the cloud in dust storm environment or dust contaminated clouds. For clouds growing in the presence of dust, the instantaneous short-wave (SW) forcing at the top of the atmosphere (TOA) is about - 2.5. 7 W/m for cloud over dust (COD) region. The clouds developing in no-dust cloud (CLD) regions yield the most negative short-wave (SW) forcing ( - 311.0 W/m2., which is about 12.8% stronger than those in COD regions. For long-wave (LW) radiative forcing, the no-dust cloud (CLD) is around 102.8 W/m2., which is 2.% less than the LW forcing from COD regions. The instantaneous TOA net radiative forcing for the CLD region is about - 2.8.2.W/m2. which is 42.1 % larger than the values of COD regions. The existence of dust aerosols under clouds significantly reduces the cooling effect of clouds.

关键词： dust storm cloud radiative forcing global warming dust aerosol-cloud-climate interaction.

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Dynamics and control of a solar collector system for near Earth object deflection

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research in Astronomy and Astrophysics 2011年第2期11卷 205-224页

作者： Shen-Ping Gong,Jun-Feng Li and Yun-Feng Gao School of Aerospace,Tsinghua university,Beijing 100084,china School of Aerospace Tsinghua University Beijing 100084 China

A solar collector system is a possible method using solar energy to deflect Earth-threatening near-Earth *** investigate the dynamics and control of a solar collector system including a main collector （MC） and secondary collector （SC）.The MC is used to collect the sunlight to its focal point,where the SC is placed and directs the collected light to an *** the relative position and attitude of the two collectors should be accurately controlled to achieve the desired optical ***,the dynamical equation of the relative motion of the two collectors in the vicinity of the asteroid is ***,the nonlinear sliding-mode method is employed to design a control law to achieve the desired configuration of the two ***,the deflection capability of this solar collector system is compared with those of the gravitational tractor and solar sail gravitational *** results show that the solar collector is much more efficient with respect to deflection capability.

关键词： minor planets asteroids -- techniques: miscellaneous -- solar collector

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An Initial Study on the Intensifying Enterprises Information Management

An Initial Study on the Intensifying Enterprises Information...

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第四届电子商务国际会议

作者： Peiji Shao~1 Jingjing Li~1 Jing Yang~1 Jie Wan~2.1 School of Management university of Electronic Science and Technology of china Chengdu 610054 china 2.Johnson & Johnson Philadelphia PA USA 19104 USA

＜正＞ The information management has become an important base of developing an enterprise’s eBusiness. Although our country has spent abundant manpower, material resources and financial support on enterprise information management, most of the information systems were not so good to meet our need and they didn’t bring the effect into play sufficiently. Based on the two large questionnaires, this paper has made an initial study and analysis on the status and actual questions of Chinese information management. And then this paper studies the current status of information management of some of the dominant enterprises in Sichuan Province. At last this paper presents some suggestions of intensifying enterprises information management.

关键词： eBusiness information management information resource management

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Effect of Bcl-2.and caspase-3 on calcium distribution in apoptosis of HL-60 cells

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Cell research 2000年第3期10卷 213-220页

作者： ZHANG MIN, HONG QING ZHANG, SHAO BAI XUE (Department of Biology, Beijing Normal university, Beijing 100875, china) DepartmentofBiology BeijingNormalUniversityChina.

Apoptosis manifests in two major execution programs downstream of the death signal: the caspase pathway and organelle dysfunction. An important antiapoptosis factor, Bcl-2.protein, contributes in caspase pathway of apoptosis. Calcium, an important intracellular signal element in cells, is also observed to have changes during apoptosis, which maybe affected by Bcl-2.protein. We have previously reported that in Harringtonine (HT) induced apoptosis of HL-60 cells, there’s a change of intracellular calcium distribution, moving from cytoplast especially Golgi’s apparatus to nucleus and accumulating there with the highest concentration. We report here that caspase-3 becomes activated in HT-induced apoptosis of HL-60 cells, which can be inhibited by overexpression of Bcl-2.protein. No sign of apoptosis or intracellular calcium movement from Golgi’s apparatus to nucleus in HL-60 cells overexpressing Bcl-2.or treated with Ac-DEVD-CHO, a specific inhibitor of caspase-3. The results indicate that activated caspase-3 can promote the movement of intracellular calcium from Golgi’s apparatus to nucleus, and the process is inhibited by Ac-DEVD-CHO (inhibitor of caspase-3), and that Bcl-2.can inhibit the movement and accumulation of intracellular calcium in nucleus through its inhibition on caspase3. Calcium relocalization in apoptosis seems to be irreversible, which is different from the intracellular calcium changes caused by growth factor.

关键词： Apoptosis calcium caspase-3 bcl-2 laser scanning confocal microscopy (LSCM).

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Stochastic stability of quasi-integrable Hamiltonian systems with time delay by using Lyapunov function method

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中国科学:技术科学 2010年第2期 217-217页

作者： LING Quan1, JIN XiaoLing1 & HUANG ZhiLong2.1 Department of Mechanics, Zhejiang university, Hangzhou 31002., china 2.State Key Laboratory of Fluid Power Transmission and Control, Zhejiang university, Hangzhou 31002., china

The asymptotic Lyapunov stability of one quasi-integrable Hamiltonian system with time-delayed feedback control is studied by using Lyapunov functions and stochastic averaging method. First, a quasi-integrable Hamiltonian system with time-delayed feedback control subjected to Gaussian white noise excitation is approximated by a quasi-integrable Hamiltonian system without time delay. Then, stochastic averaging method for quasi-integrable Hamiltonian system is used to reduce the dimension of the original system, and after that the Lyapunov function of the averaged It? equation is taken as the optimal linear combination of the corresponding independent first integrals in involution. Finally, the stability of the system is determined by using the largest eigenvalue of the linearized system. Two examples are used to illustrate the proposed procedure and the effects of delayed time on the Lyapunov stability are discussed as well.

关键词： Lyapunov stability Lyapunov function time delay stochastic averaging

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Cell cycle and cell signal transduction in marine phytoplankton

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Progress in Natural Science:Materials International 2006年第7期16卷 671-678页

作者： LIU Jingwen, JIAO Nianzhi and CAI Huinong ( Bioengineering School of Jimei university, Xiamen 36102., china State Key Laboratory of Marine Environmental Sciences of Xiamen university, Xiamen 361005, china) [a]Bioengineering School of Jimei university Xiamen China [b]State Key Laboratory of marine Environmental Science of Xiamen university Xiamen China

As unicellular phytoplankton, the growth of a marine phytoplankton population results directly from the completion of a cell cycle, therefore, cell-environment communication is an important way which involves signal transduction pathways to regulate cell cycle progression and contribute to growth, metabolism and primary production and respond to their surrounding environment in marine phytoplankton. Cyclin-CDK and CaM/Ca2. are essentially key regulators in control of cell cycle and signal transduction pathway, which has important values on both basic research and applied biotechnology. This paper reviews progress made in this research field, which involves the identification and characterization of cyclins and cell signal transduction system, cell cycle-control mechanisms in marine phytoplankton cells, cell cycle proteins as a marker of a terminal event to estimate the growth rate of phytoplankton at the species level, cell cycle-dependent toxin production of toxic algae and cell cycle progression regulated by environmental factors.

关键词： marine phytoplankton cell cycle cell signal transduction.

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Process optimization of plasma nitridation SiON for 65 nm node gate dielectrics

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Science china(Information Sciences) 2011年第12期54卷 2693-2699页

作者： HE YanDong , ZHANG Xing & WANG YangYuan Institute of Microelectronics, Peking university, Beijing 100871, china 1. Institute of Microelectronics Peking University Beijing 100871 China

The gate leakage current and reliability concern become more serious due to the aggressive scaling-down of the gate oxide thickness. Developing advanced gate dielectrics process for mass production is essential in china. In this paper, the gate leakage current reduction and reliability optimization for plasma nitridation SiON aimed at 65 nm node CMOS application was explored. A three-step fabrication process based on single wafer tools for plasma nitridation SiON has been demonstrated. The effects of each process condition on the electrical and reliability characteristics of plasma nitridation SiON have been investigated in terms of nitrogen concentration, equivalent oxide thickness(EOT), gate leakage current, mobility, time-dependent dielectric breakdown (TDDB) and negative bias temperature instability (NBTI). The optimized plasma nitrided oxide demonstrated good gate leakage reduction and high carrier mobility without sacrificing the reliability performance. This optimized plasma nitridation process has been implemented into the mass production to meet the throughput and reliability requirement.

关键词： plasma nitridation post-nitridation annealing gate leakage current NBTI TDDB

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ON THE NUMBER OF FRACTIONS TO COMPUTE TRANSPORT OF SEDIMENT MIXTURES

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International Journal of Sediment research 2001年第3期16卷 399-407页

作者： Pedro A. BASILE Center for Hydroenvironmental research, national {2. of Rosario, (2.00) Rosario, Argentina. Center for Hydroenvironmental research National University of Rosario (2000) Rosario Argentina

This paper deals with the determination of the minimum number of granulometric classes that should be used to calculate sediment transport of non-uniform grain-size materials. This is very important to reduce computational efforts in hydro-morphological mathematical models based on sediment continuity by fractions. In the case of log-normal river bed grain-size distributions the increment of the geometric standard deviation itself is already sufficient to describe the corresponding augment of the number of classes. However, strongly non-uniform river bed sediments (like those encountered in gravel-bed rivers) show completely different statistical characteristics when compared with the former ones. Herein specific relationships are developed which confirm that in these cases both the geometric standard deviation and the skewness of the grain-size distribution must be taken into account to define the minimum number of grain-size classes.

关键词： Non-uniform sediments Sediment transport of mixtures Number of fractions

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中国政治经济学年度发展报告(2.19)

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政治经济学评论 2020年第3期11卷 3-3,222页

作者： national Institute of Socialist Political Economy with Chinese Characteristics,Renmin university of {2. 中国人民大学全国中国特色社会主义政治经济学研究中心

为了进一步促进中国政治经济学的发展与创新,推动对重大现实经济问题的研究,更好地为中国的改革与发展服务,从2.10年起,我们开始发布中国政治经济学年度发展报告。报告主要以专题形式汇集和反映该年度中国政治经济学研究的新成果和新进... 详细信息

为了进一步促进中国政治经济学的发展与创新,推动对重大现实经济问题的研究,更好地为中国的改革与发展服务,从2.10年起,我们开始发布中国政治经济学年度发展报告。报告主要以专题形式汇集和反映该年度中国政治经济学研究的新成果和新进展,并探讨中国政治经济学发展中存在的问题和发展的方向。报告并不追求面面俱到,而是力求突出主线和重点,希望能够刻画出报告期内中国政治经济学研究与发展的主要特点和轨迹,同时介绍国外政治经济学研究的最新动态。从而为我国政治经济学的研究与发展提供借鉴与参考。2.19年的年度报告设立了以下主题。

关键词：现实经济问题政治经济学研究中国政治经济学年度发展报告研究与发展年度报告报告期内发展中存在的问题借鉴与参考

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