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   17172篇
  免费   1095篇
  国内免费   111篇
耳鼻咽喉   264篇
儿科学   382篇
妇产科学   307篇
基础医学   2478篇
口腔科学   1755篇
临床医学   1444篇
内科学   3528篇
皮肤病学   417篇
神经病学   1264篇
特种医学   488篇
外科学   1838篇
综合类   64篇
一般理论   4篇
预防医学   1945篇
眼科学   177篇
药学   1299篇
  1篇
中国医学   183篇
肿瘤学   540篇
  2023年   139篇
  2022年   335篇
  2021年   641篇
  2020年   436篇
  2019年   547篇
  2018年   688篇
  2017年   550篇
  2016年   527篇
  2015年   695篇
  2014年   842篇
  2013年   948篇
  2012年   1416篇
  2011年   1591篇
  2010年   846篇
  2009年   665篇
  2008年   1021篇
  2007年   1052篇
  2006年   825篇
  2005年   715篇
  2004年   591篇
  2003年   506篇
  2002年   417篇
  2001年   285篇
  2000年   263篇
  1999年   214篇
  1998年   136篇
  1997年   135篇
  1996年   99篇
  1995年   85篇
  1994年   86篇
  1993年   69篇
  1992年   98篇
  1991年   96篇
  1990年   67篇
  1989年   83篇
  1988年   71篇
  1987年   61篇
  1986年   54篇
  1985年   52篇
  1984年   35篇
  1983年   43篇
  1982年   19篇
  1981年   19篇
  1980年   35篇
  1979年   31篇
  1978年   18篇
  1977年   27篇
  1973年   21篇
  1969年   16篇
  1968年   33篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
The midwifery art has emphasised the uniqueness of human beings throughout its Nordic history. The educated Nordic midwife has in the last decade celebrated several hundred years of memories. This article studies how the key ideas of the midwifery art and patterns of ideas become evident in the zeitgeist from the beginning of the 19th century to the millennium in the Nordic countries. The legacy and pattern of ideas of the art of midwifery are interpreted in relation to the texts of the selected historical sources and based on Ricoeur's phenomenological-hermeneutic approach to the text and further to the dedication of understanding and interpretation. The historical sources refer to unprinted primary sources from historical archives and printed secondary and tertiary sources. The patterns of ideas include a tripartite whole: the true cultivation of the head, the philosophy and aesthetics of the hand, the strength of the heart and the drive of calling. These ideas open for unique visions and attest to the evident in modern midwives. Today's midwives have academic training with examinations, and the education is based on scientific evidence. The midwife profession is authorised by the state and supervised by the authorities.  相似文献   
6.
The European Journal of Health Economics - The aims of this study were to assess whether there is a conceptual overlap between the questionnaires HIT-6 and EQ-5D and to develop a mapping algorithm...  相似文献   
7.
8.
Melatonin, the main hormone produced by the pineal gland, is secreted in a circadian manner (24‐hr period), and its oscillation influences several circadian biological rhythms, such as the regulation of clock genes expression (chronobiotic effect) and the modulation of several endocrine functions in peripheral tissues. Assuming that the circadian synchronization of clock genes can play a role in the regulation of energy metabolism and it is influenced by melatonin, our study was designed to assess possible alterations as a consequence of melatonin absence on the circadian expression of clock genes in the epididymal adipose tissue of male Wistar rats and the possible metabolic repercussions to this tissue. Our data show that pinealectomy indeed has impacts on molecular events: it abolishes the daily pattern of the expression of Clock, Per2, and Cry1 clock genes and Pparγ expression, significantly increases the amplitude of daily expression of Rev‐erbα, and affects the pattern of and impairs adipokine production, leading to a decrease in leptin levels. However, regarding some metabolic aspects of adipocyte functions, such as its ability to synthesize triacylglycerols from glucose along 24 hr, was not compromised by pinealectomy, although the daily profile of the lipogenic enzymes expression (ATP‐citrate lyase, malic enzyme, fatty acid synthase, and glucose‐6‐phosphate dehydrogenase) was abolished in pinealectomized animals.  相似文献   
9.
10.
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