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   64648篇
  免费   5636篇
  国内免费   137篇
耳鼻咽喉   739篇
儿科学   1791篇
妇产科学   1848篇
基础医学   9248篇
口腔科学   1540篇
临床医学   7787篇
内科学   11542篇
皮肤病学   1070篇
神经病学   5565篇
特种医学   2537篇
外国民族医学   1篇
外科学   8007篇
综合类   969篇
一般理论   30篇
预防医学   7158篇
眼科学   1509篇
药学   4567篇
  3篇
中国医学   75篇
肿瘤学   4435篇
  2022年   624篇
  2021年   1327篇
  2020年   817篇
  2019年   1213篇
  2018年   1493篇
  2017年   1126篇
  2016年   1205篇
  2015年   1355篇
  2014年   1750篇
  2013年   2557篇
  2012年   3749篇
  2011年   3791篇
  2010年   1984篇
  2009年   1728篇
  2008年   3006篇
  2007年   3172篇
  2006年   3020篇
  2005年   2933篇
  2004年   2633篇
  2003年   2414篇
  2002年   2406篇
  2001年   1683篇
  2000年   1754篇
  1999年   1512篇
  1998年   722篇
  1997年   589篇
  1996年   559篇
  1995年   558篇
  1994年   475篇
  1993年   491篇
  1992年   1291篇
  1991年   1184篇
  1990年   1165篇
  1989年   1084篇
  1988年   989篇
  1987年   995篇
  1986年   926篇
  1985年   921篇
  1984年   726篇
  1983年   638篇
  1982年   461篇
  1980年   407篇
  1979年   663篇
  1978年   529篇
  1977年   418篇
  1976年   405篇
  1974年   455篇
  1973年   444篇
  1972年   456篇
  1971年   431篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
12.
13.
ABSTRACT The paper explores two literary texts - Dostoevsky's novel Crime and Punishment and Euripides'play Bacchae - from the point of view of immature masculinity and the catastrophe that can follow if the boy fails to achieve a genuine separation from the maternal object. The author examines the masculine anxieties and defences that arise when the boy fails to work through the Oedipus complex and instead retreats to a dyadic relation with mother which excludes the father. This retreat involves a denial of reality and the creation of a paranoid world in which his own wishes to take possession of mother can be experienced by him as an intrusion by the mother into his own masculine identity and ultimately as castration by the mother. Attempts to resolve this threat to masculinity include the use of anal defences and tyrannical states of mind in the creation of a pseudo-masculinity.
The movement into the male Oedipus complex necessarily involves a psychological state in which the externality of the oedipal-object mother is continually in danger of being blurred by the shadow cast by the pre-oedipal mother. (Thomas Ogden 1992)  相似文献   
14.
15.
In newly diagnosed adult patients with epilepsy followed prospectively on monotherapy, carbamazepine and phenytoin were associated with a fall in plasma uric acid, but sodium valproate and phenobarbitone were associated with a rise in plasma uric acid. The mechanisms and significance of these findings are discussed.  相似文献   
16.
17.
Obsessive-compulsive disorder is increasingly recognized in patients of different age groups. Serotonergic agents, such as clomipramine, have been recently found to be useful in the management of this condition. However, unexpected side effects, such as dysphoria, aggressiveness, and paranoid ideation, may occur with therapeutic doses of this compound, as evidenced in the cases of two male adolescents presented here. Possible pathogenetic factors, involving serotonin and serotonin-receptor abnormalities are discussed. Management of these side effects is based on adequate dose reduction and monitorization.  相似文献   
18.
19.
20.
Young children's ability to participate in conversation has been of particular interest in the study of pragmatic aspects of language. In this study, topics of conversation were investigated by videotaping 10 dyads of 4-year-old children during play. Ten-minute samples were analyzed according to a number of topic-dependent measures. Results revealed that all dyads evidenced some lengthy topics (13-91 utterances). Longer topics were characterized by three text-level functions. Enacting Scenarios, Describing, and Problem Solving. Nevertheless, three fourths of all dialogues were considered relatively short. Generally, partners contributed equally to dialogue, but in some dyads, 1 child dominated initiation. Findings of the study suggest that 4-year-olds are capable of extended participation in dialogue, at least part of the time. Naturalistic play settings may elicit samples of conversation that are representative of preschoolers' ability.  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