Han ZhenlaiJinan UniversityFeng Binlu Zhang YufengShandong Mining Institute
Issue 1, Pages: 48-50(1996)
摘要:In this paper, We have given sufficient conditions for the instability of a certain third order nonautonomous differential equations hy constrenling Liapunov’s function.
关键词:differential equuation;instability;Liapunov’s function
摘要:Exchang reaction of carbonyl with organic or inorganic ligands of electron-doner and metathesis of metal halids with carbonyl metal negative ion have been used to prepare some heteronuclear atomic clusters. The reaction condition are often moderate. They performed easier and have, a mord yield. In This paper, Synthesis, coordination slate, and framwork of cluster nuclear of Fe3(CO)9(C2H2)3 ect, which have 11 cluster, were described.
关键词:heteronuclear duster;transition metal carbonyl compound;coordination complex
摘要:In this paper a kind of method of extracting chenodeoxycholic acid from porcine, bile has been researched,which opens a new way for extending the sources of chenodeoxycholic acid.
摘要:In this paper,we study the. acid degree.) the amount of raw material,temperature,condition of precipitate in the process of producing ORE-2 organic rare-earth fodder filler on trial. By determining the content of RE2O3 and the poisonous elements (Pb, As,Cd and Hg),We verify the product id qualified and ger certain profit.
关键词:Rare-earth;ORE-2 organic rae-earth;Fiodder filler;production on trial
摘要:In this paper,a rapid and simple GC-MS method has been devloped for determining trace organic acids in wine. Acids are extracted and enriched on an anion exchange resin and are estered by alchol.The esters are analyzed using GC-MS and nineteen acids are characterized in wine samples.
摘要:The matrix solutions are presented for the direct calculation of error models of microwave automatic network analyzer in this paper. It is easier to get the explicit expressions of system errors and s-parameters using this method than signal flowgraph. The matrix solutions are more suitable for cmputer to process the data. Therefore,it should he very obvious to obtain high dergee of lest accuracy and to reduce the computational time.
Ma HuaDept. of Mechanical and Electronic Engineering
Issue 1, Pages: 78-82(1996)
摘要:With the development of microelectronic technology and NC technique as well as the popularization and applications of microcomputer,the research and application of the technique of microstepping or ministepping drive, which is one of the most important branches of the drive technique of step motor,is becoming more and more important. In this paper,the technique of microstepping drive of power step motor is comprehensively analysed in terms of theory,the running pattern for obtaining the high precise equlity of step angle under the condition of even microstepping is given.
关键词:Step motor;microstepping or ministepping drive
Liu Tonglin Wan YunshanShandong University of Technologywang Zuzeng Zhao XiuyeJinan University
Issue 1, Pages: 83-86(1996)
摘要:The paper summarizes improvement of DIFFUSE VELOCITY INTERFEROMETER and its type change,compare, and applicaton Simultaneously the author’s personal views are indicated combining present state of Laser Measurement System.
摘要:This paper is about the making of mixed Program from High level Language and Assembler Language. First,it gires the common rules and methods to solve this problem,Then, for the instance, of Basic Language,it describes the specific ways to make the mixed program in detail. Least ,the examples of the making of mixed programs are provided for the reader’s reference.
关键词:High level Language;Assemble Language;Mixed Program