目的探讨一种快速、廉价、方便的结核分枝杆菌耐药性分析方法,缩短结核分枝杆菌药敏试验时间.方法采用硝酸盐还原酶试验(Nitrate Reductase Assay,NRA)与绝对浓度法对照,验证
Objective To investigate the impact of organophorous pesticide exposure on semen quality and other risk factors of semen qualityMethod Questionnaire investigati
目的了解樟木口岸传染病情况,为制定防制传染病流行、口岸传染病监测措施提供依据。方法采集所监测人员血清样本,进行乙肝、梅毒、HIV 抗体检测。结果278名受检人员检出阳性
Objective:To observe the correlation between needling stimulation quantity and the therapeutic effect of acupuncture in the treatment of early stage of peripher
目的 探讨胎盘早剥的早期诊断及正确处理。方法 对1997年至2002年86例胎盘早剥病例进行回顾性分析,按轻重分类。统计学上采用X~2检验及构成比。结果胎盘早剥发生率1.796%,轻型
目的:探讨超声检查对颈部淋巴结肿大的超声指标.方法:回顾分析了107个肿大颈淋巴结的声像图表现特点.结果:超声检查可以准确显示颈部淋巴结的位置、大小、形态及声像特征,并
目的探讨在使用体外膜肺氧合治疗(ECMO)二尖瓣置换术后低心输出量综合征时,应用超声心动图对其进行监测的价值。方法选取2008年7月-2013年1月行二尖瓣人工机械瓣置换术后因出
Peer-to-peer (P2P) file sharing systems assume that their users download files in proportion to their sharing. Unfortunately, users are unlikely to do so withou
Unbalanced multi-stage logistics systems are optimized using an improved genetic algorithm based on the Prüfer number and the effective capacity coding. The im
In order to increase the efficiency and reliability of the dynamic analysis for flexible planar linkage containing the coupling of multi-energy domains, a metho