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   5355篇
  免费   227篇
  2023年   31篇
  2020年   68篇
  2019年   89篇
  2018年   405篇
  2017年   335篇
  2016年   390篇
  2015年   138篇
  2014年   121篇
  2013年   1043篇
  2012年   146篇
  2011年   294篇
  2010年   287篇
  2009年   161篇
  2008年   175篇
  2007年   166篇
  2006年   93篇
  2005年   79篇
  2004年   69篇
  2003年   56篇
  2002年   51篇
  2001年   59篇
  2000年   65篇
  1999年   50篇
  1998年   39篇
  1997年   48篇
  1996年   31篇
  1995年   43篇
  1994年   34篇
  1993年   44篇
  1992年   31篇
  1991年   41篇
  1990年   31篇
  1989年   36篇
  1988年   24篇
  1987年   39篇
  1986年   29篇
  1985年   48篇
  1984年   48篇
  1983年   40篇
  1982年   36篇
  1981年   34篇
  1980年   42篇
  1979年   37篇
  1978年   39篇
  1977年   41篇
  1976年   50篇
  1975年   32篇
  1974年   30篇
  1973年   25篇
  1972年   21篇
排序方式: 共有5582条查询结果,搜索用时 15 毫秒
991.
992.
Abstract

Multiple sclerosis (MS) was first presented in a clinical setting in 1838. In this paper the presentation and treatment of a transient hemiparesis in a drummer in 1789 is discussed. This may have been an early case of MS and presents evidence against the theory that MS is an infectious disease beginning in the 19th century.  相似文献   
993.
This review examines the history of discoveries that contributed to development of the dopamine hypothesis of schizophrenia. The origin of the hypothesis is traced to the recognition that neuroleptic drugs interfere with brain dopamine function. This insight was derived from two distinct lines of research. The first line originated from the discovery in 1956 that reserpine depletes brain serotonin. This finding resulted in a sequence of studies that led to the discovery that brain dopamine is involved in neuroleptic-induced extrapyramidal motor disturbances. The second line of research was aimed at determining the mechanism of action of psychomotor stimulants. This research produced evidence that stimulants directly or indirectly activate brain dopamine receptors. Because nonreserpine neuroleptics such as chlorpromazine block stimulant-induced movement, these findings suggested that neuroleptics were dopamine antagonists. Most previous accounts of the development of the dopamine hypothesis of schizophrenia emphasize the first line of research and ignore the second.  相似文献   
994.
995.
Abstract

In the Lady chapel at the east end of the north aisle of the church at Pucklechurch (Gloucestershire) are two effigial monuments, which have received little scholarly attention. The monuments are attributed to William de Cheltenham (d. between 1371 and 1374) and his wife Eleanor, and were set up in his lifetime within the chantry chapel dedicated to St Mary which William received licence to establish at Pucklechurch in 1337. Little remains of the chapel except an exquisite altar frontal. During the 19th century the two effigies were transposed. Various aspects of the conception and design of the Pucklechurch monuments reflect developments in monumental sculpture in Herefordshire.  相似文献   
996.
SUMMARY: In 2014, during construction work at the ex-Civil Hospital in Gibraltar, excavations led by the Gibraltar Museum revealed a major, previously unknown burial ground containing more than 200 skeletons. We present the historical, archaeological and radiometric dating evidence from the site alongside the results of initial osteological analyses. The data indicate that the burials pertain to an earlier 16th-century Spanish hospice, and therefore stand to offer new insights into the functioning of this early modern hospital and the health and movements of people at a time of incipient globalization.  相似文献   
997.
While surface collection constitutes an important component of field research at the site and regional levels, the association between surface and sub-surface materials needs to be examined through independent lines of evidence. This study employed manual bucket auger probing and soil geochemistry at the Formative site of Tlalancaleca, Central Mexico (800 b.c.a.d. 250), to evaluate the results of surface collection and to understand the formation process of the anthropogenic landscape. The combined results at one of the largest architectural complexes at Tlalancaleca indicate that it was built during the Late Formative period (500–100 b.c.) and rebuilt during the subsequent Terminal Formative period (100 b.c.a.d. 250), which is corroborated by radiocarbon dates. Moreover, the results suggest segregated uses of space such as cooking/storage, waste disposal, and craft production areas within the complex. Overall results demonstrate the effectiveness of this multi-method approach for reconstructing occupational history and activity areas.  相似文献   
998.
Morris, Brian. Anthropological Studies of Religion: An Introductory Text. Cambridge: Cambridge University Press, 1987. ix + 369 pp. including chapter notes and references, selected bibliography, and index. $42.50 cloth, $12.95 paper.

Webster, Graham. Celtic Religion in Roman Britain. Totowa: Barnes & Noble, 1987. 205 pp. including chapter notes and references, photographs and illustrations, abbreviations, classical sources, selected bibliography, and index. $30.00 cloth.

Weller, Robert P. Unities and Diversities in Chinese Religion. Seattle: University of Washington Press, 1987. viii + 215 pp. including appendices, notes, references, and index. $22.50 cloth.  相似文献   
999.
Ronald P. Rohner. They Love Me, They Love Me Not: A Worldwide Study of the Effects of Parental Acceptance and Rejection. New Haven, Conn.: H.R.A.F. Press, 1975. 300 pp. Figures, tables, appendices, bibliography, and index. $12.00 (cloth), $6.00 (paper).  相似文献   
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