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A mammalian fossil from the Dingqing Formation in the Lunpola Basin,northern Tibet,and its relevance to age and paleo-altimetry

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Science Bulletin 2012年第Z1期 263-271页

作者： DENG Tao1*,WANG ShiQi1,XIE GuangPu2,LI Qiang1,HOU SuKuan1 & SUN BoYang1,3.1 Key Laboratory of Evolutionary Systematics of Vertebrates,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044,china 2 gansu Provincial Museum,lanzhou 73.050,china 3.Graduate University of the Chinese Academy of Sciences,Beijing 100049,china

The distal extremity of a rhinocerotid humerus from the upper part of the Dingqing Formation at the Lunbori locality in Baingoin County,northern Tibet,is the first mammalian fossil found in Cenozoic deposits of the Lunpola *** medial condyle of the distal trochlea of the humerus specimen from Lunbori gradually contracts from medially to *** margin of the medial surface of the medial condyle is not prominent,the well-developed medial epicondyle strongly extends posteriorly,and is divided from the articular facet of the medial condyle by a groove;all of which are characteristic for the *** medial condyle is wide at the bottom and narrow at the *** medial collateral ligament fossa is relatively shallow,and the medial collateral ligament tubercle is very *** medial part of the upper margin of the medial condyle smoothly connects to the bony surface above,but there is no clear boundary between *** of these characteristics are identical with those of *** comparisons imply that the Lunbori specimen is closest to Plesiaceratherium gracile in the Shanwang Fauna from Linqu,Shandong province,in size and ***,its age is suggested to be the late Early Miocene(Shanwangian Age),about 18-16 *** of the rhinocerotid fossil suggests that the upper part of the Dingqing Formation deposited in the *** adjusting to paleo-temperatures of the Early Miocene,a paleo-ecosystem reconstruction indicates that the paleo-elevation was close to 3.00 m in the Lunpola Basin during this time.

关键词： Tibetan Plateau Lunpola Basin paleo-altimetry Miocene Dingqing Formation Rhinocerotidae

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EFFECTS OF MOIST PROCESSES ON LOW-FREQUENCY OSCILLATIONS OF GENERAL CIRCULATION OVER NORTHERN HEMISPHERE DURING SUMMER TIME

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Science in china,Ser.B 1987年第3期30卷 316-323页

作者：李麦村罗哲贤 Institute of Atmospheric Physics Academia Sinica Beijing Meteorological Institute of gansu province lanzhou

In this paper the Lorenz’s moist low-order spectral model[1] is further improved by introducinga parameterization for cumulus convection into it. Numerical experiments by this improved model mani-fest quasi-three week oscillations both in the location of the simulated subtropical high at upper tropo-sphere along cast-west direction and in the simulated vertical velocities and precipitation over South Asia,which is similar to those in the real atmosphere. The results of the experiments and the computationsof parameters of energetics show that introducing moist processes is a necessary condition for stimulat-ing and maintaining the low-frequency oscillations, and that moist convection can also obviously shortenoscillation periods, which is generally in agreement with the conclusions in another paper[2] of theauthors.

关键词： EFFECTS OF MOIST PROCESSES ON LOW-FREQUENCY OSCILLATIONS OF GENERAL CIRCULATION OVER NORTHERN HEMISPHERE DURING SUMMER TIME

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Synthesis and evaluation of an oil-soluble viscosity reducer for heavy oil

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Petroleum Science 2010年第4期7卷 536-540页

作者： Guo Jixiang Wang Heyi Chen Chaogang Chen Yun Xie Xiaohai Enhanced Oil Recovery Research Center China University of Petroleum Beijing 102249 China Research Institute of Shaanxi Yanchang Petroleum（group） Co. Ltd Shaanxi 710075 China Northwest Oilfield Branch Engineering and Technology Institute of Sinopec Urumchi 830011 China Tuha Oilfield Hami Xinjiang 839009 China Yumen Oilfield Yaerxia Operation Area Gansu 735019 China

To reduce the viscosity of highly-viscous oil of the Tahe oilfield （Xinjiang,china）,an oilsoluble polybasic copolymer viscosity reducer for heavy oil was synthesized using the orthogonal *** optimum reaction conditions are obtained as follows：under the protection of nitrogen,a reaction time of 9 h,monomer mole ratio of reaction materials of 3.2：2 （The monomers are 2-propenoic acid,docosyl ester,maleic anhydride and styrene,respectively）,initiator amount of 0.8% （mass percent of the sum of all the monomers） and reaction temperature of 80 *** synthesized viscosity reducer is more effective than commercial viscosity *** rate of viscosity reduction reached 95.5% at 50 *** spectra （IR） and interfacial tensions of heavy oil with and without viscosity reducer were investigated to understand the viscosity reduction *** viscosity reducer is added,the molecules of the viscosity reducer are inserted amongst the molecules of crude oil,altering the original intermolecular structure of crude oil and weakening its ability to form hydrogen bonds with hydroxyl or carboxyl groups,so the viscosity of crude oil is *** tests of the newly developed oil-soluble viscosity reducer was carried out in the Tahe Oilfield,and the results showed that 44.5% less light oil was needed to dilute the heavy oil to achieve the needed viscosity.

关键词： Oil-soluble viscosity reducer heavy oil synthesis evaluation

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Analysis of the effects of rising temperature for embankments under seismic loads in cold regions

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Research in Cold and Arid Regions 2009年第4期1卷 316-321页

作者： ZhiQiang Liu 1,2,Hao Lu 1 1.School of Civil Engineering,lanzhou Jiaotong University,lanzhou,gansu 73.070,{3..2.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,lanzhou,gansu 73.000,{3.. lanzhou Jiaotong Univ Sch Civil Engn Lanzhou 730070 Gansu Peoples R China Chinese Acad Sci Cold & Arid Reg Environm & Engn Res Inst State Key Lab Frozen Soil Engn Lanzhou 730000 Gansu Peoples R China

The effect of temperature rising for frozen soil because of dynamic load was investigated by indoor *** and railway embankments are always loaded by dynamic loads such as earthquakes and *** the Qinghai-Tibetan Plateau is a re-gion where earthquakes occur frequently,it is essential to consider the temperature-rising effect of earthquakes or vehicles on railway and road *** this paper and according to the theories of heat transfer and dynamic equilibrium equations,as-suming frozen soil as thermal elastic-viscoplastic material,taking the combination of thermal and mechanical stresses into account,we present the numerical formulae of this dynamic problem,and the computer program of the two-dimensional finite element is *** the program,the dynamic response analyses for embankments loaded by earthquake are worked *** in-dicated that the temperature-rising effect result from earthquakes for embankment in nonuniform distribution in some small areas,the maximum rising temperature is 0.16 ?C for consideration in this paper.

关键词： Qinghai-Tibetan railway temperature-rising effect frozen soil embankment

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A Systematic Analysis of Human Activity on Landform Evolution of Loess Plateau——Taking loess plateau area in gansu province as an example

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新疆大学学报(自然科学版) 1989年第4期 91-99页

作者： Xu Jianhua Ai Nanshan (Department of Geography,lanzhou University,china)

It is common knowledge that landform evolutionary process is controlled bytwo processes,endogenic forces processes,and exogenic forces *** and exogenic forces processes history is as long as the earth’s *** with landform evolutionary history,human history is a very *** people have to undertake cultivation,animal husbandry and otherproductive activities for their living since they came to the *** affectslandform evolutionary ***,the effect of human activity on landformevolution of loess plateau is becoming more and more violent for several thou-sand *** erosion is one of very important landform evolution pheno-menon of loess *** authors have studied water-soil erosion of loess pla-teau area in gansu province as example,analyzed the effect of human activity onwater-soil *** the position and the effect of human activity on landformevolution of loess plateau have been shown from one point.

关键词： human activity landform evolution plateau

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COMPUTER AIDED DESIGN OF AIRCRAFT CABIN LAYOUT　

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Computer Aided Drafting,Design and Manufacturing 1996年第2期6卷 83-89页

作者： Yang Guong Huang Yuyu(Beijing University of Aeronautics and Astronautics Beijing.100083. P.R.china Wang Jiening(gansu Polytechnic University lanzhou, gansu province,73.050) P.R.china

The reasonability of cabin layout is studied according to the ergonomic theory on micro-computer. This system includes the anthropometric model,modeling of aircraft seats and cabin,interactive ergonomic analyses on ef... 详细信息

关键词： ss:computer aided industrial design ergonomics anthropometric model

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中能重离子碰撞过程中的同位旋分馏

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物理学进展 2004年第2期24卷 127-137页

作者：邢永忠郭文军刘建业兰州重离子加速器国家实验室原子核理论中心中国科学院近代物理研究所兰州730000

　本文主要在我们近几年来对中能重离子碰撞中同位旋分馏研究工作的基础上,结合国际上对这个问题研究的进展。对同位旋分馏动力学,产生同位旋分馏的机制,入射道效应,特别是建议将同位旋分馏强度作为提取同位旋相关平均场和建立同位旋不... 详细信息

　本文主要在我们近几年来对中能重离子碰撞中同位旋分馏研究工作的基础上,结合国际上对这个问题研究的进展。对同位旋分馏动力学,产生同位旋分馏的机制,入射道效应,特别是建议将同位旋分馏强度作为提取同位旋相关平均场和建立同位旋不对称核物质状态方程的可能性进行了讨论和分析。并进一步对该问题的深入研究进行了讨论。

关键词：中能重离子碰撞同位旋分馏同位旋物理分馏强度同位旋不对称核物质状态方程

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Variation Characteristics of the Large-scale Frost in East Region of the Yellow River of gansu in Recent 40 Years

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Meteorological and Environmental Research 2011年第11期2卷 42-45,59页

作者： DU Liang-liang,CHEN Xiao-yan,YANG De-bao,SHANG Ke-zheng,WANG Shi-gong gansu Key Laboratory of Arid Climate Change and Disaster Reduction,School of Atmospheric Sciences,lanzhou University,lanzhou {3.,china

[Objective]The research aimed to study variation characteristics of large-scale frost in the east region of the Yellow River of gansu in recent 40 years.[Method]Based on daily minimum temperature data at 15 meteorological stations over the east region of the Yellow River of gansu from 1969 to 2008,according to common climatic statistical index of the frost,variation characteristics of the large-scale frost and continuous frost in the east region of the Yellow River of gansu in recent 40 years were studied.[Result]Since the 1990s,average last frost date in the east region of the Yellow River of gansu obviously advanced,and first frost date started to obviously *** time of the last frost date was longer than postponing time of the first frost *** frost-free period also obviously *** early first frost date and extremely late last frost date mainly happened in the 1970s and the *** late first frost date and extremely early last frost date mainly happened after the middle period of the *** long frost-free period gradually started to appear *** recent 40 years,the continuous frost gradually decreased,and the intensity also declined.[Conclusion]The research was favorable for understanding change characteristics of the frost and climate in the east region of the Yellow River of gansu,and had important guidance significance for improving prediction capability of the abnormal frost disaster,effectively preventing frost disaster and improving crop yield in the area.

关键词： Frost East region of the Yellow River Variation characteristics Frost-free period china

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从“制约权力”到“自我约束”──春秋时期政治的重要特点与孔子政治思想的局限

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陕西师范大学学报（哲学社会科学版） 2001年第4期30卷 85-90页

作者：乔健兰州大学历史系甘肃兰州730000

"君主"和"强国"的权力须受到一定程度制约，是春秋时期相对广泛通行的政治规范和观念。作为伟大的文化总结者的孔子，并未深刻认识和全面总结春秋时期这一最具价值的政治现实与政治思想，而是将政治的希望最终全部寄托在统治者的"自我约... 详细信息

"君主"和"强国"的权力须受到一定程度制约，是春秋时期相对广泛通行的政治规范和观念。作为伟大的文化总结者的孔子，并未深刻认识和全面总结春秋时期这一最具价值的政治现实与政治思想，而是将政治的希望最终全部寄托在统治者的"自我约束"上，出现了从"过度批判政治现实"始、以"虚幻的政治理想"终的问题，孔子的政治思想也因之而产生了影响久远的局限。

关键词：政治孔子权力制约自我约束春秋时期政治思想政治权力局限性

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Causal Relation Analysis of Economic Systems and the improvement of Syetem Dynamis(1)(2)

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天水师范学院学报 1991年第4期11卷 73-82页

作者： Zan Tingquan(Northwest Development Institute, lanzhou University, lanzhou 73.000, people’s Republic of china)Zhang Qinling(Department of Mathematics, Tianshui Normal College, Tianshui 741000, {3. province, P.R.china)

The Causal relation and whole-part relation are the two fundamen-tal relations in *** this paper,on the basis of economic prob-lems analysis in practioce,some causal relation structures of economic sys-tems and fundamental rules for operations research are,at first,*** then,a quotienting(simplifying)analysis approach of eco-nomic causal relations is presented and discussed in *** last,animprovement framework of system dynamics is proposed based on theviewpoint of generalized causal relations analysis.

关键词： Economic System Causal Relation Causal MiniEnvi-ronment Quotienting Analysis.

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