An Archean Geanticline Extending from the South Pacific to Siberia

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SUSTAINABLE DEVELOPMENT FACING CHALLENGESIN 21ST CENTURY

ISUSTAINABLE DEVELOPMENT IS UNDER UN－guiding human forward．he author pointed out manyCEASINGCHALLENGES times that sustainable developmentwas a correctstrategic selectlonforhumanfuture and It representedaThe Zlst Century has come，people have many newdevelopmentoutlook，strategic vie呷olntandvalueforecasts and long for a wonde山lprospect．The 21st（CHEN，1997；200a；200b）．Century lsa bio－sclentmc era，an economic global－The authoralso pointed out th…     

THE URBAN FUNCTION OF SUZHOU ON BASIS OF THE SHANGHAI-SUZHOU RELATIONSHIP

１ＩＮＴＲＯＤＵＣＴＩＯＮＷｉｔｈｔｈｅａｃｃｅｌｅｒａｔｉｏｎｏｆｔｈｅｅｃｏｎｏｍｉｃｇｌｏｂａｌｉｚａ-ｔｉｏｎｔｈｅｇｒａｄｕａｌｓｈａｐｉｎｇｏｆｔｈｅｎｅｗｉｎｔｅｒｎａｔｉｏｎａｌｄｉｖｉ-ｓｉｏｎｏｆｌａｂｏｒａｎｄｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｔｒａｎｓｎａｔｉｏｎａｌｃｏｒｐｏｒａｔｉｏｎｓｔｈｅｗｏｒｌｄｕｒｂａｎｓｙｓｔｅｍｓｈａｖｅｂｅｇｕｎａｎｅｗｒｏｕｎｄｏｆｉｎｔｅｇｒａｔｉｏｎ．Ｏｎｏｎｅｈａｎｄｔｈｅｃｉｔｉｅｓａｌｌｏｖｅｒｔｈｅｇｌｏｂｅａｒｅ…     

VLBI总体条纹拟合方法的应用及其效果

用总体条纹拟合求解各天线的延迟量和条纹率参数,可以提高与小天线相关基线的灵敏度。本文以射电致密陡谱源(CSS)3C43为例,就如何提高数据的信噪比,尽可能多地保留有效数据方面做了成功的尝试.从而十分有效地使用了总体条纹拟合方法.我们认为:对源结构的预知,配以恰当的处理技巧,能获取更多射电源结构信息,改善成图质量.     

EFFECTS OF AGRICULTURE RECLAMATION ON THE HYDROLOGIC CHARACTERISTICS IN THE SANJIANG PLAIN, CHINA

1 THE NATURAL ENVIRONMENTAL CHARACTERISTICS The Sanjiang Plain is located in the northeast of Heilongjiang Province, China. Russia borders this region in the north and east. Its total area is 1.088×107ha. The area of plain occupies 61.21％of the total land area and that of hill and mountain amounts to 38.79％of the total land area. It is not only one of the most important regions with large area of fresh water wetlands and with varieties of rare migratory waterfowls, but a…     

Use of Surface Observations to Estimate Upper Air Humidity for the Objective Analysis of Relative Humidity over Indian Region

In the present study objective analyses of relative humidity (RH) at surface and at the levels of 850, 700 and 500 hPa have been made using Gandin's (1963) optimum interpolation scheme. As the horizontal resolution of the radiosonde stations is rather inadequate for upper air humidity analysis, a scheme has been developed, following Rasmussen (1982) to estimate the upper air RH from the surface observations like surface RH, present weather and cloud cover. The relative humidities at the levels 850, 700 and 500 hPa were related to the surface observations through three separate regression relations. The RH values at 850, 700 and 500 hPa levels were estimated from the surface RH, cloud coverage and present weather using the above regression relations and subsequently the objective analyses at 00 GMT for the period from 4 July to 8 July 1979, were made using these estimated data along with the observed radiosonde data. Objective analyses were also made for the same period using only the radiosonde data for     

Influences of Oyster Shell Soil Conditioner on Soil and Plant Rhizospheric Microorganisms

Oyster shell soil conditioner had significant influence on soil and rhizospheric microorganisms in their biomass, respiratory intensity and nutritional requirement. It could stimulate growth of soil and rhizospheric microorganisms, especially nitrogen-fixers, and intensify soil respiration in proportion to the dose and fertilizing time of the conditioner, leading to the increase in the number of nitrogen fixing bacteria and the decrease in the number of bacteria with special nutrition demands.