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   1326篇
  免费   102篇
各国政治   141篇
工人农民   80篇
世界政治   156篇
外交国际关系   75篇
法律   726篇
中国共产党   1篇
中国政治   6篇
政治理论   236篇
综合类   7篇
  2023年   23篇
  2022年   11篇
  2021年   32篇
  2020年   45篇
  2019年   53篇
  2018年   98篇
  2017年   110篇
  2016年   86篇
  2015年   66篇
  2014年   71篇
  2013年   203篇
  2012年   62篇
  2011年   51篇
  2010年   30篇
  2009年   20篇
  2008年   51篇
  2007年   46篇
  2006年   40篇
  2005年   48篇
  2004年   52篇
  2003年   51篇
  2002年   38篇
  2001年   29篇
  2000年   24篇
  1999年   9篇
  1998年   4篇
  1997年   8篇
  1996年   2篇
  1995年   3篇
  1993年   2篇
  1992年   2篇
  1991年   7篇
  1990年   3篇
  1989年   4篇
  1988年   4篇
  1987年   3篇
  1986年   2篇
  1985年   4篇
  1982年   2篇
  1980年   2篇
  1978年   2篇
  1977年   2篇
  1972年   3篇
  1971年   1篇
  1968年   3篇
  1967年   4篇
  1966年   1篇
  1965年   1篇
  1964年   3篇
  1963年   2篇
排序方式: 共有1428条查询结果,搜索用时 15 毫秒
71.
Allele frequencies for the nine STRs included in the AmpFlSTR Profiler Plus kit (D3S1358, VWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317 and D7S820) were estimated from a sample of 143 unrelated individuals living in different regions of Greece.  相似文献   
72.
This article analyzes how market reform policies already in place affect social interests, and the feedback effects of those interests on reform processes. The variety of societal responses includes the creation of new societal organizations, reflecting the variable content and asymmetrical distribution of costs and benefits of the policies implemented. Because of this variety even in Peru, where the disorganizing effects of neoliberal reform appear to be strongest, it would seem that the societal impact of economic reform elsewhere in Latin America would also warrant more careful examination.  相似文献   
73.
74.
Allele and genotype frequencies for three recently described short tandem repeat loci D1S1656, D12S391, and D18S535 were determined in a population sample from Asturias (North Spain). The loci were amplified using a fluorescence based PCR method and were typed automatically. No deviation from Hardy-Weinberg expectations were observed. The three loci proved to be highly discriminating and the allele frequencies observed are similar to those of the other European populations that have been typed for these loci to date.  相似文献   
75.
ABSTRACT

This paper analyzes simultaneous strikes during the first half of the 20th century in North America. The transformation of production in copper, lead, zinc, and silver mining districts determined the formation of a working class that operated between Mexico and the United States. Therefore, the labor conflicts combined market circumstances and management-imposed homologation of work structures across firm divisions with the international coordination of miners. The paper describes the emergence, growth, and demise of a regional industrial system.  相似文献   
76.
“Albeit democratic, their coat of arms has pride of place”. Thus Romualdo Nogués defined, in 1890, Spanish collectors of bourgeois origin who had joined the ranks of the aristocracy. A few years later, in 1924, the Duke of Alba’s maiden speech at the Academia de Bellas Artes de San Fernando justified his personal artistic worthiness on the basis of his ancestors’ collecting activities and the artworks they had amassed.

These two examples set the scene for the research questions studied in this monographic issue. The present introduction offers a bird’s eye view of the phenomenon and continues with a few remarks about the House of Osuna which, as is well known, occupied a pivotal position in Spanish nobility during the whole of the second half of the nineteenth century.  相似文献   

77.
78.
79.
80.
A clear positive case for anabolic steroids doping was confounded by alleged urine tampering during doping control procedures. Review of the chain of custody showed no flaws, but nevertheless the athlete was adamant that the urine sample should be analyzed for DNA in order to support her contention that she was not the donor of the sample. The results obtained showed that the urine sample that scored positive for steroids contained nuclear DNA that could not be matched to the DNA obtained from the athlete's blood. On the other hand, the same urine sample contained mitochondrial DNA whose nucleotide sequences spanning the hyper variable regions HV1 and HV2 proved to be identical to those determined in mitochondrial DNA amplified from the athlete's blood. The occurrence of an extraneous genotype is compatible with exogenous nuclear DNA admixture to the athlete's urine. Alternatively, taking in consideration the mitochondrial DNA, we could not exclude that a sibling or a maternal relative of the athlete could have acted as a donor of the urine utilized for doping control and DNA analysis. Both situations point to possible tampering of the urine by the athlete. Adjudication at CAS maintained previous national and international federation decision that there was no proof of a chain of custody flaw to justify the athlete's allegation of urine substitution after collection.  相似文献   
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