全文获取类型
收费全文 | 11793篇 |
免费 | 1413篇 |
国内免费 | 59篇 |
专业分类
耳鼻咽喉 | 162篇 |
儿科学 | 439篇 |
妇产科学 | 217篇 |
基础医学 | 1748篇 |
口腔科学 | 165篇 |
临床医学 | 1423篇 |
内科学 | 2094篇 |
皮肤病学 | 139篇 |
神经病学 | 1148篇 |
特种医学 | 501篇 |
外科学 | 1583篇 |
综合类 | 471篇 |
一般理论 | 9篇 |
预防医学 | 1250篇 |
眼科学 | 162篇 |
药学 | 833篇 |
1篇 | |
中国医学 | 13篇 |
肿瘤学 | 907篇 |
出版年
2021年 | 127篇 |
2020年 | 112篇 |
2019年 | 153篇 |
2018年 | 207篇 |
2017年 | 151篇 |
2016年 | 160篇 |
2015年 | 191篇 |
2014年 | 271篇 |
2013年 | 395篇 |
2012年 | 526篇 |
2011年 | 521篇 |
2010年 | 306篇 |
2009年 | 370篇 |
2008年 | 507篇 |
2007年 | 640篇 |
2006年 | 544篇 |
2005年 | 520篇 |
2004年 | 454篇 |
2003年 | 438篇 |
2002年 | 453篇 |
2001年 | 422篇 |
2000年 | 398篇 |
1999年 | 376篇 |
1998年 | 237篇 |
1997年 | 217篇 |
1996年 | 165篇 |
1995年 | 152篇 |
1994年 | 154篇 |
1993年 | 169篇 |
1992年 | 297篇 |
1991年 | 244篇 |
1990年 | 247篇 |
1989年 | 272篇 |
1988年 | 217篇 |
1987年 | 226篇 |
1986年 | 183篇 |
1985年 | 201篇 |
1984年 | 150篇 |
1983年 | 146篇 |
1982年 | 100篇 |
1980年 | 76篇 |
1979年 | 116篇 |
1978年 | 100篇 |
1977年 | 99篇 |
1976年 | 97篇 |
1974年 | 99篇 |
1973年 | 91篇 |
1972年 | 90篇 |
1971年 | 84篇 |
1970年 | 76篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
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
2.
3.
4.
5.
Thomas J. Cahill Shehan Hettiaratchy Alex Clarke Peter E.M. Butler 《Transplantation reviews (Orlando, Fla.)》2006,20(2):76-81
Animal models have traditionally provided the basis for preliminary investigation of new techniques prior to trials taking place in human subjects. The timing of when to proceed with human trials is difficult, as the accuracy of preclinical models can only be determined with hindsight. This review outlines the progression from transplantation in animal models to man. Now that many transplant procedures are well established, it is possible to assess the predictive value and limitations of animal models. These results are of great importance in the current debate about composite tissue allotransplantation (CTA) and in particular facial transplantation. This progression of CTA from animal models to man is outlined and compared with early renal, cardiac, and liver transplants. There is some evidence to suggest that animal models may have been misleading in CTA and that this has effectively delayed the transition to humans. The role for animal models in facial transplantation, which is currently making the step to clinical trials, is discussed. 相似文献
6.
Background
Hospital episode statistics (HES) is a UK national database for the National Health Service (NHS), now available online. The purpose of this study was to observe trends in ophthalmic operations performed during the period from 1998 to 2004, using this data. 相似文献7.
Retrospective comparison of taping and ankle stabilizers in preventing ankle injuries 总被引:4,自引:0,他引:4
G D Rovere T J Clarke C S Yates K Burley 《The American journal of sports medicine》1988,16(3):228-233
The effectiveness of taping and the effectiveness of wearing a laced stabilizer in preventing ankle injuries and reinjuries over six seasons of collegiate football practices and games were assessed retrospectively. For 1 1/2 years the players all had taped ankles, and for the remaining 4 1/2 years the players chose their type of ankle support. Over the entire period, the players chose high-top or low-top shoes as preferred. During 51,931 exposures to injury (46,789 practice-exposures and 5,142 game-exposures), the 297 players sustained 224 ankle injuries and 24 reinjuries. Tape was worn during 38,658 exposures to injury (233 players), stabilizers during 13,273 exposures (127 players). Tape had been worn when 159 of the injuries and 23 of the reinjuries occurred; a stabilizer had been worn when 37 of the injuries (P = 0.003) and one of the reinjuries occurred. The combination allowing the fewest injuries overall was low-top shoes and laced ankle stabilizers. 相似文献
8.
9.
10.
The immunolocalisation of the neuroendocrine specific protein PGP9.5 during neurogenesis in the rat. 总被引:2,自引:0,他引:2
We have examined the immunolocalisation of the protein gene product (PGP) 9.5 during neurogenesis in the rat embryo. PGP9.5 was first present at 11.5 days gestation (E11.5): all morphologically recognisable nerve cell bodies and fibres were immunoreactive. In routinely processed, wax-embedded tissues, using a standard immunocytochemical technique, PGP9.5 polyclonal antibody specifically demonstrated the developing nervous system and primitive adrenal chromaffin cells. 相似文献