随着计算机技术和计算流体力学的飞速发展 ,汽轮机通流设计已从二维时代飞跃到全三维设计时代。如今 ,世界各国汽轮机通流设计技术均建立于 3D -NS计算分析的基础上。通流叶片级的 3D -NS计算分析软件正成为通流优化及新产品开发时气动...随着计算机技术和计算流体力学的飞速发展 ,汽轮机通流设计已从二维时代飞跃到全三维设计时代。如今 ,世界各国汽轮机通流设计技术均建立于 3D -NS计算分析的基础上。通流叶片级的 3D -NS计算分析软件正成为通流优化及新产品开发时气动设计中重要的工具。东方汽轮机厂基于先进的静动叶型线 ,利用全三维粘性多级叶轮机计算程序对高压级的新旧设计叶片级作了多个方案的 3D -NS计算分析 ,成功地开发出先进的三维弯曲叶片 ,并应用于国产 3F - 2 0 0MW汽轮机的通流改造中。经过改造后机组的热力性能试验验证 。展开更多
Restrictive factors of Chinese generating set equipment manufacturing industry innovation includes technical introduction restraint, system restraint, enterprise resources, ability restraint and resources disperser re...Restrictive factors of Chinese generating set equipment manufacturing industry innovation includes technical introduction restraint, system restraint, enterprise resources, ability restraint and resources disperser restraint. In the future, based on industrial innovation, generating set manufacture enterprise＇s strategic choice, strategies on industry innovation of Chinese generating set manufacturing industry are proposed. There are a lot of means can help, as well as developing many kinds of clean energies and realizing industrial reforming, extending service pattern, promoting industry innovation level, enhancing ability of enterprise＇s continuous development and accelerating industry＇s innovation.展开更多
目的调查分析一起甲型H1N1流感暴发的原因和流行状况,采取针对性的控制措施。方法采用现场流行病学调查方法开展调查,应用Realtim e PCR方法进行病原学检测。结果从2009年11月2日至11月5日,共出现以发热、咳嗽、咽痛为主要症状的病人12...目的调查分析一起甲型H1N1流感暴发的原因和流行状况,采取针对性的控制措施。方法采用现场流行病学调查方法开展调查,应用Realtim e PCR方法进行病原学检测。结果从2009年11月2日至11月5日,共出现以发热、咳嗽、咽痛为主要症状的病人12例,全部为15岁～18岁在校学生,无死亡和后遗症病例出现。Realtim e PCR法病原学检测甲型流感病毒M基因通用引物阳性,猪H1N1流感病毒NP基因通用引物阳性,甲型H1N1流感病毒HA基因特异性引物阳性。结论本次发病为甲型H1N1流感病毒引起的流感暴发。展开更多
文摘Restrictive factors of Chinese generating set equipment manufacturing industry innovation includes technical introduction restraint, system restraint, enterprise resources, ability restraint and resources disperser restraint. In the future, based on industrial innovation, generating set manufacture enterprise＇s strategic choice, strategies on industry innovation of Chinese generating set manufacturing industry are proposed. There are a lot of means can help, as well as developing many kinds of clean energies and realizing industrial reforming, extending service pattern, promoting industry innovation level, enhancing ability of enterprise＇s continuous development and accelerating industry＇s innovation.
文摘目的调查分析一起甲型H1N1流感暴发的原因和流行状况,采取针对性的控制措施。方法采用现场流行病学调查方法开展调查,应用Realtim e PCR方法进行病原学检测。结果从2009年11月2日至11月5日,共出现以发热、咳嗽、咽痛为主要症状的病人12例,全部为15岁～18岁在校学生,无死亡和后遗症病例出现。Realtim e PCR法病原学检测甲型流感病毒M基因通用引物阳性,猪H1N1流感病毒NP基因通用引物阳性,甲型H1N1流感病毒HA基因特异性引物阳性。结论本次发病为甲型H1N1流感病毒引起的流感暴发。
