observational相关论文
AIM:To perform a meta-analysis of observational studies and randomized controlled trials(RCTs)on the association between......
Some variational data assimilation(VDA)problems of time-and space-discrete models with on/off parameterizations can be r......
A post-marketing study is an integral part of research that helps to ensure a favorable risk-benefit profile for approve......
通过对河南省65个自动站在2年平行观测期间人工站与自动站气温(平均、最高、最低)观测资料的差值平均值、差值标准差进行综合分析,得......
通过对枫渡水电站滑坡体的变形观测资料进行整理分析,得出该滑坡体目前的工作性态,并对其稳定性态进行评价.......
目的对药用单子叶植物四细胞型气孔的组成、类型和分布类群进行观察研究。方法自行采集鉴定标本材料,制作叶片或幼茎表面切片,观察研......