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目的分析病例以便了解异位妊娠的发病因素,进一步研究异位妊娠增加的原因。方法对2001-2008年在吉林省延边第二人民医院因异位妊娠住院保守或手术治疗的患者338例进行分析。
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Background:Handan Eye Study (HES),a large population-based cohort study in rural area of north China,was one of the few studies focusing on the major eye diseas
以2012年大黑汀水库“7.21”洪水资源调度为例,分析了洪水资源利用在大黑汀水库调度上的可行性,定量计算了洪水资源调度产生的效益,并对相关问题进行了初步分析,结果表明依托
Agrobacterium-mediated transient expression assays are a convenient alternative to stable expression because they are simple,easy to perform,and achieve gene ex
胸膜刷检术是将细胞刷经胸膜腔活检针送入胸腔,把细胞刷刷下的标本进行涂片,送细胞学检查的方法,对胸腔积液诊断阳性率高,操作简单,相对安全,且耐受性良好。在选择胸腔积液诊
In batch cultures of Candida krusei, the effect of corn steep liquor (CSL) concentration was investigated. The result showed that glycerol yield was greatly aff
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For the gas and liquid superficial velocity ranging from 0.07—0.36?m·s -1 and 0.008—0.016?m·s -1 respectively,the significance of operating condit