全文获取类型
收费全文 | 13857篇 |
免费 | 798篇 |
国内免费 | 555篇 |
专业分类
耳鼻咽喉 | 46篇 |
儿科学 | 246篇 |
妇产科学 | 131篇 |
基础医学 | 1585篇 |
口腔科学 | 129篇 |
临床医学 | 2399篇 |
内科学 | 1914篇 |
皮肤病学 | 119篇 |
神经病学 | 668篇 |
特种医学 | 454篇 |
外国民族医学 | 1篇 |
外科学 | 1618篇 |
综合类 | 2627篇 |
现状与发展 | 2篇 |
预防医学 | 902篇 |
眼科学 | 89篇 |
药学 | 1519篇 |
7篇 | |
中国医学 | 349篇 |
肿瘤学 | 405篇 |
出版年
2024年 | 19篇 |
2023年 | 146篇 |
2022年 | 305篇 |
2021年 | 525篇 |
2020年 | 413篇 |
2019年 | 343篇 |
2018年 | 380篇 |
2017年 | 367篇 |
2016年 | 402篇 |
2015年 | 419篇 |
2014年 | 822篇 |
2013年 | 939篇 |
2012年 | 778篇 |
2011年 | 789篇 |
2010年 | 729篇 |
2009年 | 664篇 |
2008年 | 706篇 |
2007年 | 741篇 |
2006年 | 650篇 |
2005年 | 617篇 |
2004年 | 513篇 |
2003年 | 501篇 |
2002年 | 396篇 |
2001年 | 309篇 |
2000年 | 301篇 |
1999年 | 279篇 |
1998年 | 221篇 |
1997年 | 229篇 |
1996年 | 208篇 |
1995年 | 211篇 |
1994年 | 157篇 |
1993年 | 125篇 |
1992年 | 103篇 |
1991年 | 95篇 |
1990年 | 109篇 |
1989年 | 73篇 |
1988年 | 77篇 |
1987年 | 58篇 |
1986年 | 51篇 |
1985年 | 70篇 |
1984年 | 56篇 |
1983年 | 30篇 |
1982年 | 49篇 |
1981年 | 38篇 |
1980年 | 39篇 |
1979年 | 27篇 |
1978年 | 27篇 |
1977年 | 17篇 |
1976年 | 22篇 |
1974年 | 19篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
This meta-analysis was designed to assess the effectiveness and safety of extracorporeal shock wave therapy (ESWT) for patients with low back pain (LBP). Pubmed, Embase, Cochrane's library, PEDro (Physiotherapy Evidence Database), China National Knowledge Infrastructure (CNKI), and Wanfang Data were searched until December 2019 to identify studies assessing the effectiveness and safety of EPSW for LBP. The prime outcome is pain intensity measured by Visual Analog Scale (VAS) or numeric rating scale (NRS). Other outcomes included functional status, quality of life, psychological outcomes measured by Oswestry Disability Index (ODI), as well as the adverse events. Mean differences (MD) were calculated for continuous outcomes, while odd ratios (OR) were calculated for binary outcomes. Revman 5.3 software was used for statistical analysis. Five randomized controlled trials (RCTs) were finally included in this meta-analysis. The pooled mean difference in post-treatment pain scores was −2.37 (P <0.0001), indicating that post-treatment pain scores was significantly higher by 2.37 in control group than in ESWT group. At a mean follow-up time of 4–6 weeks, the pooled mean difference in ODI scores was −14.10 (P <0.00001), indicating that the pooled mean difference of post-treatment ODI scores was 14.10 higher in control group than in ESWT group. The use of ESWT is effective in alleviating pain and improving the general functional state for patients with LBP. However, more evidence was needed to verify its safety. 相似文献
2.
吕建裕 《中国医疗器械信息》2022,(4)
输尿管上段结石为临床中常见泌尿系结石类型之一,如不能及时诊治,可引起重度积水、泌尿系感染,甚至脓毒血症,对患者肾功能、健康造成严重影响。随着微创治疗技术在泌尿系结石中应用,微创治疗方法能降低对患者造成治疗性创伤,降低相关并发症发生率,促进患者康复,了解临床中微创治疗输尿管上段结石方法,对临床中合理治疗输尿管上段结石有重要价值。 相似文献
3.
4.
Guo-Quan Shi Huajun Zhu & Zhen-Guo Yan 《Communications In Computational Physics》2022,31(4):1215-1241
A priori subcell limiting approach is developed for high-order flux reconstruction/correction procedure via reconstruction (FR/CPR) methods on two-dimensional unstructured quadrilateral meshes. Firstly, a modified indicator based on
modal energy coefficients is proposed to detect troubled cells, where discontinuities
exist. Then, troubled cells are decomposed into nonuniform subcells and each subcell has one solution point. A second-order finite difference shock-capturing scheme
based on nonuniform nonlinear weighted (NNW) interpolation is constructed to perform the calculation on troubled cells while smooth cells are calculated by the CPR
method. Numerical investigations show that the proposed subcell limiting strategy on
unstructured quadrilateral meshes is robust in shock-capturing. 相似文献
5.
6.
7.
Walid K. Abu Saleh Phillip Mason Odeaa Al Jabbari Hany Samir Brian A. Bruckner 《Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital》2015,42(6):569-571
The Impella 5.0, a percutaneously inserted left ventricular assist device, has been used to support patients who have severe heart failure or who are undergoing high-risk percutaneous coronary intervention. We report our surgical placement of the Impella 5.0, through a graft sewn to the aorta, to unload the left ventricle of a 59-year-old man who was undergoing venoarterial extracorporeal membrane oxygenation for postcardiotomy shock. The patient underwent successful placement of a long-term left ventricular assist device before his discharge from the hospital. The versatility of the Impella 5.0 is exemplified in this patient who was successfully bridged to long-term support. 相似文献
8.
9.
随着对肿瘤热疗和肿瘤免疫微环境(TIME)的深入研究,近年来热疗对TIME的作用越来越受到学者们的重视。本文就目前国内外研究进展,对热疗与TIME中几类主要免疫细胞和免疫相关细胞因子的影响及作用机制作一综述。全面而透彻的了解热疗对TIME的调控作用,有助于为肿瘤治疗提供新的思路和方法。 相似文献
10.
Joshua Manghelli Lisa Brown Hany B. Tadros Nabil A. Munfakh 《Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital》2015,42(5):491-494
The inflammatory response induced by cardiopulmonary bypass decreases vascular tone, which in turn can lead to vasoplegic syndrome. Indeed the hypotension consequent to on-pump cardiac surgery often necessitates vasopressor and intravenous fluid support. Methylene blue counteracts vasoplegic syndrome by inhibiting the formation of nitric oxide.We report the use of methylene blue in a 75-year-old man who developed vasoplegic syndrome after cardiac surgery. After the administration of methylene blue, his hypotension improved to the extent that he could be weaned from vasopressors. The use of methylene blue should be considered in patients who develop hypotension refractory to standard treatment after cardiac surgery. 相似文献