With social and economic progress and development of rail transportation,train station,in the service of transporting pa......

Objective To understand the density,population distribution and seasonal dynamics of the medical vectors such as mosquit......

目的 分析四川省不同职业人群黑热病发病趋势,为重点人群防治对策制定提供依据.方法 收集、整理2005-2010年四川省黑热病疫情报告......

With urbanization and population migration,some Chinese cities fall into decline whereas others prosper.Using nighttime ......

抚顺土区兴安落叶松鞘蛾Ｃｏｌｅｏｐｈｏｒａ ｄａｈｕｒｉｃａ Ｆｉｋｖ有寄生蜂１１种，其中９种为老熟幼虫和蛹期寄生蜂，２种为１－２龄幼虫期寄生蜂。该文报道了寄生蜂种群的林间分布与森林......