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   7087篇
  免费   383篇
  国内免费   34篇
耳鼻咽喉   52篇
儿科学   110篇
妇产科学   124篇
基础医学   1218篇
口腔科学   105篇
临床医学   616篇
内科学   1206篇
皮肤病学   360篇
神经病学   759篇
特种医学   368篇
外科学   934篇
综合类   55篇
预防医学   330篇
眼科学   123篇
药学   518篇
中国医学   29篇
肿瘤学   597篇
  2023年   36篇
  2022年   67篇
  2021年   121篇
  2020年   85篇
  2019年   97篇
  2018年   135篇
  2017年   132篇
  2016年   172篇
  2015年   227篇
  2014年   249篇
  2013年   285篇
  2012年   463篇
  2011年   458篇
  2010年   323篇
  2009年   306篇
  2008年   488篇
  2007年   513篇
  2006年   503篇
  2005年   489篇
  2004年   427篇
  2003年   441篇
  2002年   441篇
  2001年   100篇
  2000年   65篇
  1999年   103篇
  1998年   105篇
  1997年   81篇
  1996年   69篇
  1995年   44篇
  1994年   47篇
  1993年   44篇
  1992年   34篇
  1991年   14篇
  1990年   34篇
  1989年   23篇
  1988年   25篇
  1987年   17篇
  1986年   15篇
  1985年   18篇
  1984年   15篇
  1983年   13篇
  1982年   12篇
  1981年   12篇
  1980年   22篇
  1979年   13篇
  1978年   14篇
  1977年   12篇
  1976年   12篇
  1975年   12篇
  1973年   10篇
排序方式: 共有7504条查询结果,搜索用时 31 毫秒
101.
102.

Two different video-taped short-term psychotherapies were rated on therapeutic alliance for 27 sessions. The ratings were based on two methods: the Penn Helping Alliance Scales (Penn-HAS) and the Therapeutic Alliance Rating Scale (TARS). Both scales provide separate scores for the therapist and the patient. After checking the reliabilities of the ratings, the strength and course of the alliance formation are compared within and across therapies. Furthermore it was hypothesized that the alliance is structured differently in the two therapies. This hypothesis is tested by making content-specific item comparisons across the therapies for the Penn-HAS and by a comparison of the factor structure over time (factor analytic P-technique) for the TARS.  相似文献   
103.
104.
105.
106.
107.
Nixdorff  Uwe 《Herz》2020,45(3):300-300
Herz - In der Legende der Abb. 1 „Sinnvolle Diagnostik: Bildgebung“ (https://doi.org/10.1007/s00059-019-04873-3) wurde der Endpunkt des 10-Jahres-Risikos des schematisch...  相似文献   
108.
The central complex (CX) comprises a group of midline neuropils in the insect brain, consisting of the protocerebral bridge (PB), the upper (CBU) and lower division (CBL) of the central body and a pair of globular noduli. It receives prominent input from the visual system and plays a major role in spatial orientation of the animals. Vertical slices and horizontal layers of the CX are formed by columnar, tangential, and pontine neurons. While pontine and columnar neurons have been analyzed in detail, especially in the fruit fly and desert locust, understanding of the organization of tangential cells is still rudimentary. As a basis for future functional studies, we have studied the morphologies of tangential neurons of the CX of the desert locust Schistocerca gregaria. Intracellular dye injections revealed 43 different types of tangential neuron, 8 of the PB, 5 of the CBL, 24 of the CBU, 2 of the noduli, and 4 innervating multiple substructures. Cell bodies of these neurons were located in 11 different clusters in the cell body rind. Judging from the presence of fine versus beaded terminals, the vast majority of these neurons provide input into the CX, especially from the lateral complex (LX), the superior protocerebrum, the posterior slope, and other surrounding brain areas, but not directly from the mushroom bodies. Connections are largely subunit- and partly layer-specific. No direct connections were found between the CBU and the CBL. Instead, both subdivisions are connected in parallel with the PB and distinct layers of the noduli.  相似文献   
109.
110.
Social differences in morbidity and mortality have always been a central topic in public health research. In recent years, there has been a growing research interest that has clearly resonated with the general public and the political arena as well. This article describes the development and establishment of social epidemiology in Germany and presents the current status of research. In addition, it describes different models for explaining health inequalities. On this basis, selected challenges and prospects of socio-epidemiological research are demonstrated. The reason why the analysis of social differences in morbidity and mortality will continue to be a key task of public health research in the national and international context in the future is also explained.  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