排序方式： 共有87条查询结果，搜索用时 15 毫秒
51.
自从前苏联切尔诺贝利核电站事故之后,反应性事故研究成为核工业界瞩目的焦点。各国核安全当局要求重新审查安全分析报告中的所有反应性事故,以及核电站用来缓解反应性事故后果的相关安全系统、安全措施(包括事故规程)和堆芯的固有安全性。那些由于操纵员误操作、没有遵守规程或规程缺陷等设计和运行上的不当造成的意外硼稀释事件的潜在风险不容忽视。尤其令人忧虑的是该类事故在原先的安全设计中没有被考虑或重视程度不够,缺乏必要的软硬件上的安全防范措施。近年来,随着运行电厂多次出现误稀释事件,误稀释被各个电厂加以重视。本文基于AP1000核电机组,讨论误稀释的产生及应对分析。 相似文献
52.
用企业文化构筑企业核心竞争力 总被引：5，自引：0，他引：5
吴元平 《广播电视大学学报》2007,(2):95-97
企业的发展依靠核心竞争力,核心竞争力来自于技术,技术来自于管理,而管理靠的是企业文化。归根结底企业文化就是核心竞争力,更是因为它具备了核心竞争力的特征和对核心竞争力的重要作用,我们要用优秀的企业文化来构筑企业核心竞争力。 相似文献
53.
STS research has devoted relatively little attention to the promotion and reception of science and technology by non-scientific
actors and institutions. One consequence is that the relationship of science and technology to political power has tended
to remain undertheorized. This article aims to fill that gap by introducing the concept of “sociotechnical imaginaries.” Through
a comparative examination of the development and regulation of nuclear power in the US and South Korea, the article demonstrates
the analytic potential of the imaginaries concept. Although nuclear power and nationhood have long been imagined together
in both countries, the nature of those imaginations has remained strikingly different. In the US, the state’s central move
was to present itself as a responsible regulator of a potentially runaway technology that demands effective “containment.”
In South Korea, the dominant imaginary was of “atoms for development” which the state not only imported but incorporated into
its scientific, technological and political practices. In turn, these disparate imaginaries have underwritten very different
responses to a variety of nuclear shocks and challenges, such as Three Mile Island (TMI), Chernobyl, and the spread of the
anti-nuclear movement.
Sheila Jasanoff is Pforzheimer Professor of Science and Technology Studies at Harvard University’s John F. Kennedy School of Government. Her research centers on the interactions of law, science, and politics in democratic societies. She is particularly concerned with the construction of public reason in various cultural contexts, and with the role of science and technology in globalization. Her most recent book is Designs on Nature: Science and Democracy in Europe and the United States. Sang-Hyun Kim is Postdoctoral Research Fellow at Harvard University’s John F. Kennedy School of Government. He received Ph.D.’s in chemistry from Oxford and in history and sociology of science from Edinburgh. His research interests include the cultural politics of science and technology in twentieth-century Korea, the politics of expertise, the governance of science and technology, and the history and politics of environmental sciences. 相似文献
| Sang-Hyun KimEmail: |
Sheila Jasanoff is Pforzheimer Professor of Science and Technology Studies at Harvard University’s John F. Kennedy School of Government. Her research centers on the interactions of law, science, and politics in democratic societies. She is particularly concerned with the construction of public reason in various cultural contexts, and with the role of science and technology in globalization. Her most recent book is Designs on Nature: Science and Democracy in Europe and the United States. Sang-Hyun Kim is Postdoctoral Research Fellow at Harvard University’s John F. Kennedy School of Government. He received Ph.D.’s in chemistry from Oxford and in history and sociology of science from Edinburgh. His research interests include the cultural politics of science and technology in twentieth-century Korea, the politics of expertise, the governance of science and technology, and the history and politics of environmental sciences. 相似文献
54.
借助于核Drell-Yan过程研究了夸克在核物质中传播时的能量损失效应。利用HKN01和EKS98两套束缚核子的部分子分布函数,在考虑夸克的能量损失后,计算了p-A碰撞的核Drell-Yan过程中的微分截面比,并且抽取出了夸克在核物质中传播时的能量损失值。 相似文献
55.
《Communication monographs》2012,79(3):278-301
This study examines the efforts of individuals and advocacy groups seeking to influence a state utilities commission's decisions regarding a large corporate merger and a nuclear power construction project. Such local engagements have wider significance as the nuclear industry attempts to expand its role in the global energy economy. Utilizing participatory field work and analysis of public documents, we extend the concept of rhetorical boundary work by examining two challenges faced by opponents of the merger and the nuclear project. First, the utilities commission's regulatory mandate is limited to economic risks rather than environmental, health, and safety risks. Second, expert authority is consistently privileged over local, vernacular arguments. We explore the rhetorical negotiation of these boundaries and the effects produced. 相似文献
56.
槲皮素对四氯化碳引起的小鼠急性肝损伤治疗作用及其机理 总被引：3，自引：0，他引：3
Jia-qi ZHANG ;Liang SHI ;Xi-ning XU ;Si-chong HUANG ;Bin LU ;Li-li JI ;Zheng-tao WANG 《Journal of Zhejiang University. Science. B》2014,15(12):1039-1047
研究目的：本研究旨在观察槲皮素对四氯化碳（CCl4）诱导的肝损伤的治疗解毒作用及其机理。创新要点：首次发现槲皮素对CCl4诱导的肝损伤有治疗作用,并且首次发现Prx和Trx家族参与其中。研究方法：检测小鼠血清转氨酶含量,并检测肝组织中丙二醛（MDA）、谷胱甘肽（GSH）和4．羟基壬烯醛（4-HNE）含量,并用实时聚合酶链式反应（PCR）检测肝组织中Prx1-6、TrxR1／2、Trx1／2、Nrf2和HO．1的mRNA表达情况。重要结论：CCl4造模成功后口服槲皮素对其造成的急性肝损伤有治疗作用,给药组小鼠血清中的转氨酶与模型组相比均有显著下降,通过MDA和免疫组化分析其机理可能和保护氧化应激损伤有关,通过实时PCR分析发现CCl4抑制了抗氧化酶Prx家族、TrxRd1、TrxRd2、Trx1、Trx2和Nrf2及其下游HO-1的基因表达,而槲皮素可以逆转CCl4降低的这些基因的表达。 相似文献
57.
本文简要概述了K-1000-60/3000型汽轮机高压缸结构,介绍了核电站汽轮机高压缸端部密封面漏汽情况及潜在风险,重点针对高压缸端部密封面漏汽问题进行了详细的原因分析。根据漏汽原因和设备结构特征采取了在汽缸端部密封面上增加密封条的技术改造处理措施,主要是通过在汽缸中分面上垂直于漏汽方向的位置处开槽,在槽内安装密封条的技术改造手段阻止蒸汽外漏。文中还对技术改造处理工艺过程进行了详细的介绍与总结。通过本技术措施消除了机组的安全隐患,提高了设备的可靠性,确保了机组的安全、稳定、高效运行,同时积累了丰富的工程经验,为同类型汽轮机组处理类似技术难题起到了很好的借鉴作用。 相似文献
58.
核电企业合同管理标准化探讨 总被引：1，自引：0，他引：1
本文对合同管理的标准化工作进行简要分析,通过梳理核电企业合同管理体系,对核电企业合同管理的标准化实施提出几点建议。 相似文献
59.
Inspectors of nuclear power plants manage information to make plants safer and to monitor and evaluate adherence to regulatory requirements. Integrating grounded practical theory and communication as design (CAD), we investigated the collective design of and practice of status meetings—a pair of daily meetings meant to manage information about the day-to-day safety oversight of nuclear power plants. Our analysis focused on (1) the problems these status meetings were meant to address, (2) the techniques participants used or proposed to address them, and (3) the situated ideals reflected in the designs for and practice of these meetings. Clustering the techniques illuminated designable features of status meetings (e.g., what, how much, and how to communicate, turn-taking, timing, pacing, and audience). We extend work on CAD by conceptualizing and investigating collective design work, focusing on the fit, function, and fragmentation of approaches to status meetings. We also contribute to the theory and practice of organizing for safety and reliability by making recommendations for coping when communication processes informed by best practices nonetheless produce persistent, irresolvable tensions that complicate the enactment of safety. 相似文献
60.
高分辨核磁共振（Nuclear Magnetic Resonance,NMR）波谱是一种能够在非侵入性状态下获得生物组织分子信息的有效手段.分子间多量子相干（intermolecular Multiple-Quantum Coherence,iMQC）信号源于分子间的远程偶极相互作用,仅依赖于偶极相关距离内的磁场相对均匀性,因此可用于在不均匀磁场下获得高分辨的NMR谱.文中简要介绍了iMQC的发展历程及现状,并主要讨论了iMQC方法及其在活体及生物组织中的应用.虽然iMQC目前应用在老鼠身上比较常见,但最近的研究表明iMQC方法已被用于人体小脑的研究,将来iMQC方法将有可能应用于人体的其他器官以及其他的动物研究,具有广阔的发展前景. 相似文献