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【正】 我国图书情报工作现代化研究始于1965年中国科技情报研究所和89920部队合作试验计算机情报检索。目前,已发展到有36个单位进行这方面的研究工作,以此为起点带动了图书
The Kinetics and mechanisms of the combustion reaction in the Ti-C-3Ni-Al system were studied . Samples were prepared by igniting compacts of elemental Ti, C, N
Shape Memory Alloy (SMA) optically activated is the key lechnology of optical SMA activator,According to the shape memory mechanism of SMA ,researches are done
Normal spinel LiMn2O4 was synthesized by sol-gel method using lithium nitrate,manganese nitrate,citric acid and ethylene glycol as raw materials. LiMn2O4 was ch
Different routes,including the replacements of the template,addition of pore expander and hydrothermal post-synthesis treatment have been used for the pore engi
【正】 目前,一个地区的图书馆、室分属科研、教育、文化、工矿企业等许多部门,由于各级领导对图书馆工作的重视程度不同,发展颇不平衡。工厂科技图书资料室和中学图书馆随着
【正】 目前,城镇(指县城以及与县城规模相当的集镇)基层图书室较为普遍,但大多各自为政,规模小,设备简陋,藏书少,服务质量不高,经济效果也差。要彻底改变这种状况,以最经济
现在在超市里的卖的“鳕鱼”,都很“价廉物美”,每斤才十几块钱甚至几块钱。只是有些令人困惑的是,这些“鳕鱼”都有着不同的名字:“银鳕鱼”“鳕鱼块”“鳕鱼片”……
Cobalt-phthalocyanine/iron nanocomposite particles have been obtained using method of composite in situ, with the mixture of carbonyl iron and solution of cobal
一、渔排寄生虫病的发生及检测2008年10月9日,深圳东部某片区海上养殖渔排有少部分渔排发现死鱼,次日养殖区内其他渔排网箱又发生大量死鱼现象。随后多个渔排刚箱陆续出现养殖