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POSITIVE SOLUTIONS OF HIGHER ORDER SUBLINEAR FUNCTIONAL DIFFERENTIAL EQUATIONS

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Acta Mathematica Scientia 1992年第3期12卷 337-345页

作者：缪益华 SW JIAOTONG UNIV DEPT APPL MATHCHENGDU 610031PEOPLES R CHINA

In this paper, we discuss higher order sublinear functional differential equation x(n)(t)+p(t)x(v)(g(t)) =0 t greater-than-or-equal-to t0 where n greater-than-or-equal-to 2, 0infinity) g(t) = infinity. R+ = [0, infini... 详细信息

关键词： POSIT eventually desired infer holds proof 希云子功云一子价

THE GREAT ACHIEVEMENT OF THE COOPERATIVE RESEARCH ON ANCIENT LIMNOLOGY BY CHINA AND U.S.A.

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Chinese Geographical Science 1993年第4期3卷 95-96页

作者：郭廷彬 National Natural Science Foundation of China Bejing 100083 PRC

"The study of plateau lake’s ancient limnology in lime stone region of central Yunnan"is a program subsidized by the National Natural Science Foundation of China, practied bySong Xueliang in Yunnan Institute of Geology. After the program had been authorized, inorder to have the program carried out successfully,the National Natural Science Founda-tion of China subsidized the researchers to cooperate with relative American institutes.

关键词： plateau ancient authorized latitude Plateau thousand cooperate infer Minnesota closing

THE INTERIOR METRIC OF A CHARGED PERFECT FLUID SPHERE

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Chinese Science Bulletin 1982年第11期27卷 1167-1172页

作者：朱世昌 Department of Physics Shanghai Teachers College

This paper discusses the interior solution of the Einstein-Maxwell equations for stable static sphere of charged perfect fluid, on which much interest has been focused in recent years. In most articles, for the case o... 详细信息

关键词： interior perfect Einstein Maxwell satisfy exterior const charged infer uniqueness

TRANSMISSION ELECTRON MICROSCOPY OF THE JILIN (KIRIN) METEORITE

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Chinese Science Bulletin 1980年第9期25卷 767-769页

作者：张培善陶克捷杨大宇陈希成 Institute of Geology Academia Sinica Institute of Physics Academia Sinica

In order to get a deeper insight into the structure of the Jilin (Kirin) meteorite, as a mineralogical-petrological study of it, we examined its submicroscopic structure with the transmission electron microscope. The specimens used for rids examination were prepared by the ion-beam thinning method. Sawtooth images of mineral exsolution lamellae were seen under the conventional 100kV transmission electron microscope,

关键词： thinning insight Jilin minerals figure deformed infer suffered finer sever

The Relation Between Copper Tube Demand and Air Conditioner Production Is Stable

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China Nonferrous Metals Monthly 2016年第2期 7-8页

According to monitoring data of heating and ventilation related industrial departments,from January to October 2015,China’s total output of household air conditioners was 93,173,500sets,up by 8.27%on Y-o-Y basis,from... 详细信息

关键词： household heating ventilation infer experienced mature downstream competition Stable rebound

BIOLOGICAL EFFECTS OF HUMAN GROWTH HORMONE GENE MICROINJECTED INTO THE FERTILIZED EGGS OF LOACH Misgurnus anguillicaudatus (Cantor)

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Chinese Science Bulletin 1986年第14期31卷 988-990页

作者：朱作言许克圣李国华谢岳峰何玲 Institute of Hydrobiology Academia Sinica Wuhhan

At the end of 1982, Palmiter, Brinster et al. reported that mice of superb growth had been created through microinjection of a hybrid gene coding for rat growth hormone into the male pronuclei of mouse fertilized eggs. This work ushered in a new approach to develop new breeds of domestic animals with a method of foreign gene trans-formation. We infer that fish, on a lower level of evolution in vertebrata,

关键词： Cantor Misgurnus superb created quantities 伍仙 juvenile DNA infer embryogenesis

FISH BIOMASS ESTIMATES AT THE BOTTOM LAYER OF THE BOHAI SEA IN JULY, 1982 AND THEIR METHODS

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