检索结果-南通市图书馆

STUDY ON GIS FOR YIELD ESTIMATION BY REMOTE SENSING IN jilin MAIZE BELT

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Geographical Science 1996年第4期6卷 351-358页

作者： Liu Xiangnan Huang Fang Zhou Zhanao (Department of Geography, Northeast Normal University,Changchun 130024, PRC ) Department of Geography Northeast Normal University Changchun PRC

The integration of remote sensing and geographical information system (GIS) technology is an optimal method for maize yield estimation, because it needs the support of various data including remote sensing information and *** paper introduces the objective, components, data acquisition and implementing way of maize yield estimation information system, and uses it in the study on maize acreage calculation, growth vigour monitoring, regional soil moisture content assessment and final yield forecast.

关键词： maize yield estimation by remote sensing jilin Maize Belt

VARIATION OF PH IN ATMOSPHERIC PRECIPITATION IN CITIES OF jilin PROVINCE

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2000年第2期10卷 182-187页

作者： ZHAI Jin-liang DENG Wei YAN Bai-xing SONG Xin-shan NIE Ying-zi(Changchun Institute of Geography, the Chinese Academy of Science, Changchun 130021, P.R.China)(jilin Petro-chemical Academy Changchun 130051, P.R.China ) Changchun Institute of Geography the Chinese Academy of Sciences Changchun P. R. China jilin Petro-chemical Academy Changchun P. R. China

Through statistical analysis on data of atmospheric precipitation samples of 8 cities from 1992 to 1997,this paper discussed temporal and spatial variations of pH in atmospheric precipitation in jilin Province, China Monitored pH value in the 8 representative cities was converted into hydrogen ion consistency and average condsistency was calculated by weighting precipitation, then mean pH value was calculated according to average hydrogen ion consisteney. Results show that atmospheric precipitaion of cities in jilin Province is basically. neutral, but in Tumem and Hunchun cities atmospheric precipitation is seriously acid. The average pH value of atmospheric precipitation of the eastern cities of Tumen and Hunchun in many years is 5. 12 and 5. 38 respectively, and the atmospheric precipiboon acidity in the two cities is quite serious with the extreme low pH is 3. 91 and 4. 28 respectively. Most of the acid precipitation occurred in summer and autumn seasons in the 8 monitored cities, so that the low pH value of atmoopheric pmeipitation occurred in summer and autunm seasons and high pH value occurred in winter ed spring seasons. The temporal and spatial variations of pH in atmospheric precipitation in jilin Province are attributed to both local sources and peripheral sources, and are related to both natural and artificial factors.

关键词： atmospheric precipitation pH acid rain jilin Province

A SHOCK-LOADING EXPERIMENTAL STUDY OF jilin METEORITE SAMPLES

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1991年第23期36卷 1984-1988页

作者：戴诚达王道德金孝刚 Institute of Geochemistry Academia Sinica Guiyang 550002 PRC Southwest Institute of Fluid Physics Mianyang 610003 PRC

Ⅰ. INTRODUCTION A wide variety of shock effects in meteorites were generated by hypervelocity impacts between their parent bodies. According to study results of shocked meteorite samples loaded by shock wave produced by the dynamic high pressure device, it is possible to determine the pressure or temperature ranges of important shock features and to predict the dynamic condition and the impact environment of their parent bodies. An artificially shockloaded meteorite (Kernouve chondrite, H6)has been studied by Sears et al., who

关键词： jilin meteorite shock metamorphism shock facies

Special Issue for the 70^(th) Anniversary of the Discipline of Chemistry at jilin University

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2022年第3期38卷 I0001-I0006页

作者： YU Jihong LI Yi LU Zhongyuan LIU Kun jilin University

This year the Discipline of Chemistry at jilin University will celebrate its 70^(th)anniversary in *** 1952,the Discipline of Chemistry at jilin University was founded by *** Liusheng(academician),*** Auchin(academician),*** Shizhi,and *** Weisun and many other prestigious *** in the spirit of collaboration and innovation,the Discipline of Chemistry is now internationally renowned for its excellence and innovation in both fundamental research and student education.

关键词： jilin anniversary

Mineralization Ages of the Jiapigou Gold Deposits,jilin

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 1997年第2期71卷 180-188页

作者： Li Junjian Shen Baofeng Mao Debao Li Shuangbao Zhou Huifang and Cheng Yuming Tianjin Institute of Geology and Mineral Resources,Chinese Academy of Geological Sciences, Tianjin Nonferrous Metal Geological Exploration Bureau, Changchun, jilin

The Jiapigou gold deposits are typical vein type deposits associated withArchaean greenstone belts in China. According to the crosscutting relationships between dykesand auriferous veins, single hydrothermal zircon U-Pb dating and quartz K-Ar,^(40)Ar-^(39)Ar andRb-Sr datings, the main mineralization stage of the Jiapigou deposit has been determined to be2469-2475 Ma, while mineralization superimposition on the gold deposit occurred in1800-2000 Ma and 130-272 Ma. They form a mineralization framework of one oldermetallogenic epoch (Late Archaean-Early Proterozoic) and one younger metallogenic epoch(Mesozoic) of gold deposits in Archaean greenstone belts in China.

关键词： mineralization age hydrothermal zircon gold deposit Jiapigou jilin

jilin Connel Starts up 150000 T/A Aniline Project

在线全文

学校读者我要写书评

暂无评论

China Chemical Reporter 2009年第13期20卷 20-20页

On April 5th,2009 jilin Connel Chemical Industry Co.,Ltd,(jilin Connel) commencedproduction of 150 000 t/a aniline project in jilin Economic-Technological DevelopmentZone, jilin city,jilin *** an investment of RMB850 million,the project is the first phase of 300 000 t/aaniline *** March 28th,2007 jilin Connel held the ground breaking ceremony for its 300

关键词： jilin ceremony breaking aniline

jilin Suspend Viscose Filament Production

在线全文

学校读者我要写书评

暂无评论

China Chemical Reporter 2009年第15期20卷 16-16页

jilin Chemical Fiber Group Co.,Ltd.(SZ:000420) announcedon May 13th that its 452 workers had been hospitalizedsince May 4th because of the indisposed symptomsuch as dizziness,vomiting,chest distress,and the companyhas... 详细信息

关键词： jilin vomiting distress filament chemicals chest r

jilin Oilfield to Add Oil Output

在线全文

学校读者我要写书评

暂无评论

China Chemical Reporter 2009年第26期20卷 24-24页

CNPC’s jilin Oilfield at Fuyu in jilin province will add oil produc-tion by 1 million tons per *** on the expansion projectwas started on July 15th,CNPC *** Oilfield produced 5 million tons ofoil and gas in 2004,and 6million tons for 2006 and 7 million tons for 2008,representing in-creasing by one million tons every two years since 2004.

关键词： jilin CNPC representing creasing

jilin Connel Resumed Production of Aniline Unit

在线全文

学校读者我要写书评

暂无评论

China Chemical Reporter 2009年第17期20卷 18-18页

On May 21st,2009 jilin Connel Chemical Industry Co.,Ltd.(jilin Connel)announced toresume production of the 150 000 t/a aniline unit that just suspended *** to a source from jilin Connel,this stop had an impact on the ... 详细信息

关键词： jilin aniline suspended 中冲