检索结果-南通市图书馆

Inonotus plorans (Hymenochaetaceae),a polypore new to china

在线全文

学校读者我要写书评

暂无评论

Inonotus plorans (Hymenochaetaceae),a polypore new to China

中国菌物学会第四届会员代表大会暨全国第七届菌物学学术讨论会

作者： CUI Bao-Kai~1 YUAN Hai-Sheng~2.1 institute of Microbiology,beijing Forestry University,beijing 100083.china 2.institute of Applied Ecology,chinese academy of Sciences,Shenyang 110016,china

A remarkable polypore,Inonotus plorans(Pat.) Bondartsev & Singer,was recently found on Populus from west Xinjiang Autonomous Region of northwestern *** is new to china,and it is also the first time of the species recorded in South and Central Asia,its illustrated description is given based on the chinese *** differences between it related species were discused.

关键词： Inonotus plorans lignicolous and poroid fungi taxonomy

Impacts of Global Warming Perturbation on Water Resources in Arid Zone: Case Study of Kaidu River Basin in Northwest china

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Mountain Science 2011年第5期8卷 704-710页

作者： MUPENZI Jean de la Paix State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences

The main goal of this study was to assess the long-term impacts of global warming perturbation on water resources of the Kaidu River Basin in Northwest china. Temperature, precipitation and hydrology data during the past 2. years from 1979 to 2.07 were collected and analyzed using parametric and non-parametric methods, the connection between temperature and precipitation by the combination of grey correlation analysis method and the hypothesis testing for trend of climate change. The results show a high increase in temperature in the study area as well as an extreme and highly variable hydrological regime in this region, where flash floods can exceed the total runoff from a sequence of years. These variations may be due to the geographical location of the Kaidu River Basin in arid zone. It also reveals that precipitation has a much greater impact on stream flow than that of temperature. The development of new approaches was proposed as responses to climate change in this arid region.

关键词： Global warming Kaidu River Temperature Precipitations Stream flow

Complex petroleum accumulating process and accumulation series in the buried-hill trend in the rift basin:An example of Xinglongtai structure trend,Liaohe subbasin

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2008年第S2期51卷 108-116页

作者： GAO XianZhi1,PANG XiongQi1,LI XiaoGuang2.CHEN ZhenYan2.SHAN JunFeng2.LIU Feng1,ZOU ZhiWen1 & Li WeiLian1 1 Faculty of Resources and Information Technology,{3. University of Petroleum,beijing 102.49,{3. 2.Exploration and Development institute of Liaohe Oilfield,Petro{3. Liaohe Oil Company,Panjin 12.010,{3. china Univ Petr Fac Resources & Informat Technol Beijing 102249 Peoples R China Petrochina Liaohe Oil Co Explorat & Dev Inst Liaohe Oilfield Panjin 124010 Peoples R China

The buried-hill trend is a typical style of the petroliferous structure in the faulted basin of eastern china. The Xinglongtai structure trend in the Liaohe subbasin,Bohai Bay Basin is a buried faulted-hill trend resulting from the periodic faulting of the Tai’an-Dawa faults. The structure was cut by various faults,which are interlinked and constitute the conduits for petroleum migration. Petroleum accumulated in the Tertiary sandstones and pre-Tertiary basement of metamorphosed rocks through the migration pathways of the fault system. Petroleum in the structure was derived from different hydrocarbon kitchens to form a hybrid field complex. Petroleum charged the structure from different directions and accumulated in various reservoirs through different pathways in different times. The accumulations in the buried hill trend of Xingongtai are composed of two types of traps in the two stratigraphic systems: traps in the Tertiary sandstones were formed by the fault blocks and by the pinchout of the sandstone,and traps in the pre-Tertiary basement of metamorphosed rocks were formed by fissures in the inner part of the buried hills and by the unconformity near the surface of the buried hills.

关键词： faulted basin petroleum migration and accumulation petroleum occurrence buried hills Achaean basement Liaohe subbasin Bohai Bay basin

A Characterization of Adaptive Stabilizability of LTV Systems with Hidden Markovian Jumps

在线全文

学校读者我要写书评

暂无评论

A Characterization of Adaptive Stabilizability of LTV System...

第十九届中国控制会议

作者： F. Xue, L. Guo institute of Systems Science. chinese {2. of Sciences, {3., P.R.china.

＜正＞The adaptive stabilization problem of linear time-varying （LTV） systems with unknown parameters modeled as a hidden Markov chain is studied in the paper. A necessary and sufficient condition characterizing the adaptive stabihzability of the system is found, which hinges on the existence of a set of coupled algebraic Riccati-like equations that are different from those known for the non-adaptive case. Several equivalent characterizations are also provided in this paper. It is worth mentioning that our results also reveal the capability and limitations of the feedback mechanism in our framework, as we have not restricted ourselves to any special （e.g.. linear） class of feedback laws.

关键词： Adaptation stabilization estimation Markov chain feedback Riccati equation.

Searching for Top Squark at Hadron Colliders

在线全文

cnki会议

学校读者我要写书评

暂无评论

高能物理与核物理 2002年第Z1期26卷 25-33页

作者： YANG Jin-Min Young Bing-Lin (institute of Theoretical Physics, CAS, beijing 100080, {2.)(Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, US A) institute of Theoretical Physics CAS Beijing 100080 China institute of Theoretical Physics CAS Beijing 100080 China Department of Physics and Astronomy Iowa State University Ames Iowa 50011 USA

In this talk we briefly summarise our recent study(hep-ph/0007165)on searching fortop squark at hadron *** light top-squark(stop)if produced in hadron colliders in theform of the (?)(?) pair and decaying through the l... 详细信息

关键词：高能物理核物理 QCD Searching for Top Squark at Hadron Colliders pair LHC

Dietary shifts of the masked palm civet（paguma larvata）in relation to fruits availability at a fragmented forest of central china

在线全文

学校读者我要写书评

暂无评论

Dietary shifts of the masked palm civet（paguma larvata）in ...

野生动物生态与资源保护第三届全国学术研讨会

作者： ZHOU Youbing~(1,2. CHEN Jin~1 ZHANG Shuyi~2.(1 Xishuangbanna Tropical Botanical Garden,chinese {3. of Sciences,Mengla,Yunnan 6663.3.{2. 2.institute of Zoology,chinese {3. of Sciences,beijing 10080 {2.)

＜正＞We document the diet of masked palm civets（Paguma larvatat）in a fragmented forest of central china, and provide information on dietary shifts of this species in relation to fruits *** was determined from 102. fecal samples and 786 fresh forage sites from July to November in 2.04 and April 2.05 to May *** fruits,cultivated fruits,leaves,cortexes,amphibians,reptiles,birds,small mammals,mollusks

关键词：

pH dependant isotope variations in arc-type geothermal waters:New insights into their origins

在线全文

cnki会议

学校读者我要写书评

暂无评论

pH dependant isotope variations in arc-type geothermal water...

中国科学院地质与地球物理研究所2.06学术年会

作者： Zhonghe Pang institute of Geology and Geophysics,chinese {2. of Sciences,{3. 10002.,china

In arc-type geothermal systems along the circum-Pacific rim,low pH well discharges in the geothermal systems of Japan and the Philippines are more enriched in oxygen-18 or deuterium or both as compared to neutral pH waters found in the same *** enrichment of both oxygen-18 and deuterium means higher percentage of magmatic vapour contribution to the well discharges due to the fact that un-neutralized magmatic water carries much abundant hydrogen ions to keep the water at a lower *** is consistent with the observation that acid geothermal waters usually occur near the volcanic heat source of a geothermal system,where the magmatic component tends to reach a higher percentage.

关键词： pH Geothermal waters Magmatic water Isotope

DNS OF TRANSITION AND TURBULENCE IN COMPRESSIBLE FLAT PLATE BOUNDARY LAYER

在线全文

cnki会议

学校读者我要写书评

暂无评论

DNS OF TRANSITION AND TURBULENCE IN COMPRESSIBLE FLAT PLATE ...

第十二届全国计算流体力学会议

作者： Fu Dexun, Ma Yanwen, Gao Hui LNM institute of Mechanics, chinese {2. of Sciences, {3.,

＜正＞The spatially evolving compressible turbulent flat-plate boundary layer is simulated numerically with the compressible Navier-Stokes equations which are discretized with a fifth order accurate upwind compact difference approximation for the convection terms, sixth order symmetrical compact difference approximation for the viscous terms, and a three stage R-K method for time derivatives. For improving the resolution of the solutions the scheme is discretized on non-uniform mesh with fine mesh grid near the wall. For accelerating the transition process a disturbance with periodic suction and blowing is given on the upstream wall. The DNS results for flat-plate boundary layer flow from laminar through transition to fullydeveloped turbulent flow for incoming Mach number M∞= 2.2.are presented. The effect of

关键词：

High Power All-Solid-State Nd: YVO4 laser and its intracavity SHG

在线全文

cnki会议

学校读者我要写书评

暂无评论

chinese Journal of Lasers 1996年第3期B5卷 205-208页

作者： ZHANG Jian LI Shiqun LI Jiaqiang WU Nianle(Dept. of Modern Applied Physics, beijing 100084, china)WU Xing YANG Huaguang({2. of Physics, Academia Sinica, {3., china)Franz Hollinger(Festkoerper-Laser-Institut Berlin GmbH, TU Berlin, D-1 Tsinghua Univ Beijing China

Ｈｉｇｈ　Ｐｏｗｅｒ　Ａｌｌ－Ｓｏｌｉｄ－Ｓｔａｔｅ　Ｎｄ：ＹＶＯ＿４　ｌａｓｅｒ　ａｎｄ　ｉｔｓ　ｉｎｔｒａｃａｖｉｔｙ　ＳＨＧＨｉｇｈＰｏｗｅｒＡｌｌ－Ｓｏｌｉｄ－ＳｔａｔｅＮｄ：ＹＶＯ＿４ｌａｓｅｒａｎｄｉｔｓ... 详细信息

Ｈｉｇｈ　Ｐｏｗｅｒ　Ａｌｌ－Ｓｏｌｉｄ－Ｓｔａｔｅ　Ｎｄ：ＹＶＯ＿４　ｌａｓｅｒ　ａｎｄ　ｉｔｓ　ｉｎｔｒａｃａｖｉｔｙ　ＳＨＧＨｉｇｈＰｏｗｅｒＡｌｌ－Ｓｏｌｉｄ－ＳｔａｔｅＮｄ：ＹＶＯ＿４ｌａｓｅｒａｎｄｉｔｓｉｎｔｒａｃａｖｉｔｙＳＨＧ￥ＺＨ...

关键词： MRBS all-solid-state laser Nd:YVO4 laser