化学文献老化历时半衰期的测定  

Determination of Along Time Half Life of Chemical Documents Obsolescence

作　　者：刘红[1] 俞培果[1] 陈健[1] 

机构地区：[1]西南工学院图书馆

出　　处：《情报理论与实践》1997年第6期342-344,共3页Information Studies:Theory & Application

摘　　要：化学文献老化历时半衰期的测定刘红俞培果陈健（西南工学院图书馆四川６２１００２ＡｂｓｔｒａｃｔＢａｓｅｄｏｎｔｈｅｃｉｔａｔｉｏｎｓｏｆｔｈｅＣｈｉｎｅｓｅｃｈｅｍｉｓｔｓ，ａｎａｌｏｎｇ－ｔｉｍｅｍｅａｓｕｒｅｍｅｎｔｏｆｔｈｅｈａｌｆ－ｌｉｆｅｏｆ...Based on the citations of the Chinese chemists,an along time measurement of the half life of chemical documents obolescence is made with the method given by Yu Peiguo in 1993 The result indicates that the half life of chemical documents is over 8 years

关 键 词：化学文献 半衰期 测定 文献老化 历时测定法 

分 类 号：G350[文化科学—情报学]