全文获取类型
收费全文 | 31595篇 |
免费 | 2779篇 |
国内免费 | 49篇 |
专业分类
耳鼻咽喉 | 437篇 |
儿科学 | 855篇 |
妇产科学 | 614篇 |
基础医学 | 3957篇 |
口腔科学 | 672篇 |
临床医学 | 3622篇 |
内科学 | 6355篇 |
皮肤病学 | 443篇 |
神经病学 | 2657篇 |
特种医学 | 1237篇 |
外国民族医学 | 3篇 |
外科学 | 4687篇 |
综合类 | 683篇 |
一般理论 | 22篇 |
预防医学 | 2976篇 |
眼科学 | 979篇 |
药学 | 2264篇 |
中国医学 | 20篇 |
肿瘤学 | 1940篇 |
出版年
2021年 | 492篇 |
2020年 | 328篇 |
2019年 | 499篇 |
2018年 | 549篇 |
2017年 | 371篇 |
2016年 | 462篇 |
2015年 | 565篇 |
2014年 | 754篇 |
2013年 | 1215篇 |
2012年 | 1567篇 |
2011年 | 1734篇 |
2010年 | 923篇 |
2009年 | 823篇 |
2008年 | 1594篇 |
2007年 | 1752篇 |
2006年 | 1739篇 |
2005年 | 1728篇 |
2004年 | 1617篇 |
2003年 | 1526篇 |
2002年 | 1485篇 |
2001年 | 705篇 |
2000年 | 704篇 |
1999年 | 648篇 |
1998年 | 401篇 |
1997年 | 331篇 |
1996年 | 324篇 |
1995年 | 319篇 |
1994年 | 272篇 |
1993年 | 259篇 |
1992年 | 490篇 |
1991年 | 498篇 |
1990年 | 453篇 |
1989年 | 466篇 |
1988年 | 430篇 |
1987年 | 386篇 |
1986年 | 402篇 |
1985年 | 378篇 |
1984年 | 354篇 |
1983年 | 317篇 |
1982年 | 272篇 |
1981年 | 234篇 |
1980年 | 224篇 |
1979年 | 266篇 |
1978年 | 242篇 |
1977年 | 221篇 |
1976年 | 205篇 |
1975年 | 175篇 |
1974年 | 219篇 |
1973年 | 213篇 |
1972年 | 172篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Schneider Ralph Dettmer Marius Peters Nora Lamdark Tenzin Luedi Markus M. Adamina Michel Doll Dietrich 《European Surgery》2022,54(2):117-125
European Surgery - Treatment of pilonidal sinus disease (PSD) requires a tailored approach. A national guideline was published in 2014. The current status of surgical PSD therapy... 相似文献
3.
4.
Erin C. Tully Jackson M. Gray Sherryl H. Goodman Stephen Nowicki Jr. 《Early child development and care》2016,186(12):1939-1951
Children who expect they can bring about good outcomes and avoid bad outcomes tend to experience more personal successes. Little is known about factors that contribute to these ‘control expectancies’. The purpose of the present study was to determine whether children's internal control expectancies occur in the context of parents’ internal control expectancies, low family strain, and high family cohesiveness and whether these factors are more strongly related to daughters’ than sons’ control expectancies. A community sample of 85 children aged 9–11 years and their parents (85 mothers; 63 fathers) completed rating scales. Fathers’ more internal control expectancies and mothers’ reports of fewer family strains were associated with daughters’ but not sons’ greater internal control expectancies, and greater family cohesiveness was related to both daughters’ and sons’ internal control orientations. These findings suggest that family factors may contribute to children's, particularly daughters’, development of internal control expectancies. 相似文献
5.
6.
7.
8.
The term “oligometastatic prostate cancer” refers to a heterogeneous group of disease states currently defined solely on the basis of clinical features. Oligorecurrent disease, de novo oligometastases, and oligoprogressive disease likely have unique biologic underpinnings and natural histories. Evidence suggesting the existence of a subset of patients who harbor prostate cancer with limited metastatic potential currently includes disparate and overwhelmingly retrospective reports. Nevertheless, emerging prospective data have corroborated the “better-than-expected,” retrospectively observed outcomes, particularly in the setting of oligorecurrent prostate cancer. Improved functional imaging with prostate-specific membrane antigen-targeted strategies may enhance the identification of patients with oligometastatic prostate cancer in the short term. In the long term, refinement of the oligometastatic case definition likely will require biologic risk-stratification schemes. To determine optimal treatment strategies and identify patients most likely to benefit from metastasis-directed therapy, future efforts should focus on conducting high-quality, prospective trials with much-needed molecular correlative studies. 相似文献
9.
Journal of Neurology - 相似文献
10.
Marion Tardieu Najat Salameh Line Souris David Rousseau Laurène Jourdain Hanadi Skeif François Prévot Ludovic de Rochefort Denis Ducreux Bruno Louis Philippe Garteiser Ralph Sinkus Luc Darrasse Marie Poirier-Quinot Xavier Maître 《NMR in biomedicine》2022,35(7):e4701
Magnetic resonance elastography aims to non-invasively and remotely characterize the mechanical properties of living tissues. To quantitatively and regionally map the shear viscoelastic moduli in vivo, the technique must achieve proper mechanical excitation throughout the targeted tissues. Although it is straightforward, ante manibus, in close organs such as the liver or the breast, which practitioners clinically palpate already, it is somewhat fortunately highly challenging to trick the natural protective barriers of remote organs such as the brain. So far, mechanical waves have been induced in the latter by shaking the surrounding cranial bones. Here, the skull was circumvented by guiding pressure waves inside the subject's buccal cavity so mechanical waves could propagate from within through the brainstem up to the brain. Repeatable, reproducible and robust displacement fields were recorded in phantoms and in vivo by magnetic resonance elastography with guided pressure waves such that quantitative mechanical outcomes were extracted in the human brain. 相似文献