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   94776篇
  免费   445篇
  国内免费   883篇
  96104篇
  2022年   18篇
  2021年   35篇
  2020年   21篇
  2019年   16篇
  2018年   11856篇
  2017年   10691篇
  2016年   7493篇
  2015年   670篇
  2014年   360篇
  2013年   406篇
  2012年   4319篇
  2011年   12923篇
  2010年   12047篇
  2009年   8268篇
  2008年   9838篇
  2007年   11451篇
  2006年   345篇
  2005年   569篇
  2004年   1030篇
  2003年   1079篇
  2002年   830篇
  2001年   288篇
  2000年   206篇
  1999年   67篇
  1998年   32篇
  1997年   46篇
  1996年   35篇
  1995年   30篇
  1994年   20篇
  1993年   51篇
  1992年   62篇
  1991年   79篇
  1990年   35篇
  1989年   32篇
  1988年   44篇
  1987年   34篇
  1986年   16篇
  1985年   10篇
  1984年   14篇
  1983年   23篇
  1981年   9篇
  1975年   16篇
  1974年   9篇
  1972年   250篇
  1971年   278篇
  1966年   8篇
  1965年   15篇
  1962年   24篇
  1944年   12篇
  1940年   10篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
For most of the twentieth century the state was not a major part of the anthropological toolkit. Despite significant archaeologically driven work on evolution and state formation, most socio-cultural anthropologists have viewed the state with empiricist scepticism, populist hostility, or ethnographic indifference. Typically, state-theory has been left to other disciplines, such as political science and sociology. Since the end of the cold war there has been a greatly increased interest in the state among anthropologists. Philip Abrams, Michael Herzfeld, and Akhil Gupta, who coined the phrase “ethnography of the state”, have been particularly important to this development. However, there remains no serious engagement with the body of state-theory generated, over the last century, by political activists, scientists, sociologists, and anthropologists. It will be argued that this has allowed for the growth of an unproblematised orthodoxy around an ethnographically informed variant of classic American pluralist state-theory. This orthodoxy has hobbled the understanding and explanation of complex political phenomena, led to confusion between hypotheses and conclusions, and tied parts of the discipline to a partisan political project that remains largely un-interrogated. This essay seeks to provide context and clarification on state-theory as a step towards discussion of anthropology’s contemporary engagement with the state and broader questions of political action and social change.  相似文献   
992.
993.
Brown–black (or dematiaceous) fungi are responsible for a wide variety of infectious syndromes in both immunocompetent and immunocompromised patients, including local infections, allergic disease, pneumonia, brain abscess, and disseminated infection. They are distinct from the more common hyaline molds, Aspergillus and Fusarium, that cause human disease. They are often found in soil and generally distributed worldwide. In recent years, these fungi have been increasingly recognized as important pathogens. Dematiaceous fungi may have unique pathogenic mechanisms owing to the presence of melanin in their cell walls, which imparts the characteristic dark color to their spores and hyphae. Diagnosis rests on careful microscopic and pathologic examination, as there are no specific laboratory tests to reliably identify these fungi. Therapy depends upon the clinical syndrome, although disseminated infection often has high mortality. Triazoles such as voriconazole, posaconazole, and itraconazole are the most active antifungal agents available. Further studies are needed to better understand the pathogenesis and optimal treatment of these uncommon infections.  相似文献   
994.

Introduction  

The efficacy and the optimal type and volume of aerobic exercise (AE) in fibromyalgia syndrome (FMS) are not established. We therefore assessed the efficacy of different types and volumes of AE in FMS.  相似文献   
995.
996.
Atanu Sarkar 《EcoHealth》2010,7(1):114-126
Millions of people living in India are at risk by consuming arsenic contaminated groundwater. Several technological solutions have failed to address the problem due to segmental approaches, resulting in human suffering for a period of three decades. The article is based on an analysis of arsenic-related health problems from an ecosystem perspective through a primary survey conducted in five arsenic affected villages in the state of West Bengal and review of existing research and policy documents. Although modern agricultural practices and drinking water policies have resulted in arsenic contamination of groundwater, current mitigation policy is essentially confined to biomedical approaches, which includes potable water supply and medical care. The study also shows that existing disparity, difficulty in coping, inaccessibility to health service and potable water supply and lack of participation in decision making have resulted in more suffering among the poor. On the other hand, spreading of arsenic contamination in the ecosystem remains unabated. Foods grown in the affected area have emerged as additional sources of exposure to humans. There is lack of evidence of any perceivable benefits due to sustainable agriculture, as present nature of agriculture practice is essentially driven by crop yield only. Further research is needed to generate credible evidence of alternative agriculture paradigms that may eventually reduce body burden of arsenic through reduced dependency on groundwater.  相似文献   
997.
998.
We have developed and characterized 21 microsatellite markers in the aphidophagous gall midge Aphidoletes aphidimyza (Rondani) (Diptera: Cecidomyiidae). All 21 loci tested were polymorphic: the number of alleles ranged from 2 to 17. Allelic richness and observed heterozygosities were higher in females than in males. Several loci had no heterozygosity in males, suggesting that the loci were located on sex chromosomes or E-chromosomes, common to cecidomyiids. The high polymorphism detected in this study suggests the markers will be of value in analyzing genetic structure of field populations.  相似文献   
999.
1000.
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