全文获取类型
收费全文 | 18206篇 |
免费 | 1415篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 166篇 |
儿科学 | 606篇 |
妇产科学 | 544篇 |
基础医学 | 2508篇 |
口腔科学 | 251篇 |
临床医学 | 2682篇 |
内科学 | 3364篇 |
皮肤病学 | 168篇 |
神经病学 | 1614篇 |
特种医学 | 535篇 |
外国民族医学 | 1篇 |
外科学 | 1863篇 |
综合类 | 292篇 |
一般理论 | 24篇 |
预防医学 | 2468篇 |
眼科学 | 242篇 |
药学 | 1005篇 |
中国医学 | 22篇 |
肿瘤学 | 1282篇 |
出版年
2023年 | 133篇 |
2022年 | 78篇 |
2021年 | 365篇 |
2020年 | 262篇 |
2019年 | 381篇 |
2018年 | 468篇 |
2017年 | 297篇 |
2016年 | 375篇 |
2015年 | 383篇 |
2014年 | 523篇 |
2013年 | 793篇 |
2012年 | 1136篇 |
2011年 | 1144篇 |
2010年 | 615篇 |
2009年 | 615篇 |
2008年 | 977篇 |
2007年 | 1133篇 |
2006年 | 1092篇 |
2005年 | 1024篇 |
2004年 | 960篇 |
2003年 | 950篇 |
2002年 | 879篇 |
2001年 | 322篇 |
2000年 | 303篇 |
1999年 | 264篇 |
1998年 | 210篇 |
1997年 | 159篇 |
1996年 | 178篇 |
1995年 | 123篇 |
1994年 | 132篇 |
1993年 | 129篇 |
1992年 | 188篇 |
1991年 | 186篇 |
1990年 | 182篇 |
1989年 | 213篇 |
1988年 | 174篇 |
1987年 | 224篇 |
1986年 | 164篇 |
1985年 | 168篇 |
1984年 | 153篇 |
1983年 | 131篇 |
1982年 | 107篇 |
1981年 | 92篇 |
1980年 | 91篇 |
1979年 | 90篇 |
1978年 | 92篇 |
1976年 | 77篇 |
1974年 | 91篇 |
1973年 | 88篇 |
1971年 | 76篇 |
排序方式: 共有10000条查询结果,搜索用时 298 毫秒
1.
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.
7.
8.
Janet Fricke Carolyn Unsworth Diane Worrell 《Australian Occupational Therapy Journal》1993,40(1):7-15
This paper reports an inter-rater reliability study on the Functional Independence Measure (FIM). The FIM measures inpatient burden of care, as reflected in 18 self care items, rated on a seven point scale from dependent to independent. The subjects were 40 occupational therapists, divided according to experience with the FIM and randomly assigned to a FIM training or non-training group. Subjects rated video tapes of four stroke patients on transfers, bathing, dressing, grooming, toileting and eating items from the FIM. Rater consensus was calculated using the intraclass correlation coefficient (ICC), percentage agreement and a measure of disagreement. Rating accuracy was measured by comparisons with an expert rater. Ratings were most reliable when done by clinicians with no prior FIM experience, from the FIM training group. It is strongly recommended that all clinicians undergo FIM training before using this tool to ensure acceptable reliability. 相似文献
9.
10.