首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   156篇
  免费   12篇
各国政治   17篇
工人农民   3篇
世界政治   18篇
外交国际关系   6篇
法律   78篇
中国共产党   1篇
中国政治   1篇
政治理论   38篇
综合类   6篇
  2024年   2篇
  2023年   1篇
  2022年   2篇
  2021年   1篇
  2020年   1篇
  2019年   1篇
  2018年   5篇
  2017年   6篇
  2016年   7篇
  2015年   1篇
  2014年   6篇
  2013年   23篇
  2012年   7篇
  2011年   8篇
  2010年   5篇
  2009年   4篇
  2008年   7篇
  2007年   5篇
  2006年   1篇
  2005年   5篇
  2004年   11篇
  2003年   7篇
  2002年   6篇
  2001年   4篇
  1999年   5篇
  1998年   2篇
  1997年   2篇
  1996年   1篇
  1995年   2篇
  1994年   2篇
  1993年   3篇
  1992年   4篇
  1990年   2篇
  1989年   1篇
  1987年   2篇
  1986年   2篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1982年   2篇
  1981年   2篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1974年   1篇
  1973年   1篇
  1972年   1篇
  1971年   1篇
排序方式: 共有168条查询结果,搜索用时 31 毫秒
81.
We evaluated the performance of real-time RT-PCR and ELISA assays for detection of dermcidin (DCD) in sweat and body-fluid stains. DCD, a small antibiotic peptide secreted into human sweat, was detected by real-time RT-PCR in 7-day-old stains containing as small as 10 μL of sweat, and the assay showed high specificity when testing 7-day-old stains containing 30 μL of other body-fluid. ELISA using anti-human dermcidin mouse monoclonal antibody detected DCD sweat diluted up to approximately 10,000-fold and could specifically detect DCD in 10 μL of body-fluid stains. The performance of the two assays was tested during winter on samples that simulated forensic case samples: an undershirt and a sock worn for 20 h, a handkerchief used to wipe the brow several times within 12 h, a cap and a cotton glove worn for 4 h, and a white robe worn at intervals for 2 years. The result showed that the former assay detected DCD in all sites of the undershirt examined (armpit, back, and breast), and the latter gave a relatively high OD value in the armpit among the three sites. For the socks, although the latter assay gave very high OD values in both the center and toe of the foot sole, the former could not detect DCD in both of them. These results indicate that highly damp conditions, such as inside a shoe, might promote the degradation of mRNA in samples such as socks. In the other case samples, sweat was adequately detected by both assays.This study is the first demonstration of the use of real-time RT-PCR to sensitively identify sweat among body-fluid stains, and it confirmed that dermcidin was an excellent marker for sweat identification. In addition, the usefulness of ELISA was also verified. Positive sweat identification using these assays is expected to assist forensic practice.  相似文献   
82.
At a moment of heightened public concern over food-related health issues, major corporations in the food industry have found their products and practices under scrutiny. Needing to be understood as socially responsible, these corporations have established partnerships with the state to construct a positive, proactive, and cooperative public image. One major public–private partnership that evolved from former First Lady Michelle Obama’s Let’s Move initiative—the Partnership for a Healthier America—serves as a case study in this paper, which analyzes the consequences and social harms perpetuated by a public health campaign bound by the imperative to maximize profit. By using trusted state actors to deliver accurate but deceptive claims about food companies’ commitment to public health, this public–private partnership actively misleads the public and potentially exacerbates public health challenges, warranting a skeptical revision of how we understand corporate social responsibility and neoliberal governance on issues of health and nutrition. As a form of fraud, these attempts to mislead the public go beyond the actions of public sector individuals or members of corporate boards, but are structurally incentivized by the legal rights, regulatory privileges, and profit-related incentives central to the modern corporate form. While conventional criminological research tends to underemphasize state and corporate harms, we make use of a critical criminological perspective to analyze state-corporate partnerships in the space between food industry practices and public health policy.  相似文献   
83.
84.
85.
A method for genomic DNA recovery from different types of PCR product mixes suitable for multiplex amplification and typing using the Profiler Plus STR typing system has been investigated. The application of this method is of significance in cases where the original DNA samples have been exhausted due to repeated typing analyses in an effort to maximize their evidentiary value. Such cases typically involve samples analyzed using the available DNA typing systems of the time which gave a markedly lower power of discrimination, either alone or in combination, compared to that of modern multiplex STR typing systems. It was found that an effective method for recovering genomic DNA from HLA-DQA1 +PM and CTT triplex amplification mixes, suitable for reproducible achievement of the complete Profiler Plus profile, involved the use of Amicon Microcon-100 microconcentrators. Interestingly, this method was not required to achieve the complete nine STR profile using D1S80 amplification mixes.  相似文献   
86.
This paper describes the development of New Zealand policy on posthumous reproduction in assisted human reproduction. It outlines five perspectives: medical, ethical, cultural, psychosocial and legal and shows the multidisciplinary approach taken by the National Ethics Committee. It is argued that each of these perspectives has important contributions to make to the multidisciplinary approach. The guidelines determined by the Committee are outlined, along with the processes used in arriving at these.  相似文献   
87.
Qingxin Ken Wang 《East Asia》1997,16(1-2):86-109
This article examines Japan’s search for a more active international role in the Korean peninsula after the Cold War. It argues that Japanese foreign policy toward the Korean peninsula after the Cold War has continued to exhibit a reactive posture due to several important constraints. The United States has remained an important factor in shaping the Japanese foreign policy agenda in the post-Cold War era. Moreover, the Japanese domestic political environment, despite the dramatic political realignment after 1993, has continued to favor a nonmilitary Japanese role in world affairs. Finally, the lingering Korean mistrust toward Japan has hampered Japan’s bid to increase its political profile. Consequently, these constraints ensure that Japan’s independent role in the Korean peninsula will be rather limited in the foreseeable future.  相似文献   
88.
This presentation begins by offering a brief overview of the existing research into Parliament and Parliamentary Oversight of the Public Sector. It highlights the work of those who are experts in the area and concludes by identifying areas which would benefit from further research.  相似文献   
89.
This article examines the telecommunications industry in Sri Lanka and assesses the effectiveness of regulatory arrangements associated with the liberalisation of the telecommunications industry, from a management point of view. The review focuses on the scope of services, price and the quality of services available to customers after the liberalisation. This study finds that, despite the early establishment of the Telecommunications Regulatory Commission (TRC) to monitor the telecommunications industry, its interventions have been only partially successful in making it conducive to service providers and customers. While liberalisation of the telecommunications industry has been favoured, the role of the regulator has been controversial with regard to its independence, impartiality, capability, transparency and accountability. We argue that the current model has failed to create favourable market conditions under the circumstances prevailing in the country, and hence a more appropriate model is yet to be developed. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   
90.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号