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   5673篇
  免费   519篇
  国内免费   61篇
耳鼻咽喉   17篇
儿科学   66篇
妇产科学   52篇
基础医学   243篇
口腔科学   104篇
临床医学   535篇
内科学   694篇
皮肤病学   67篇
神经病学   246篇
特种医学   100篇
外科学   516篇
综合类   1252篇
一般理论   2篇
预防医学   1512篇
眼科学   102篇
药学   431篇
  24篇
中国医学   230篇
肿瘤学   60篇
  2024年   7篇
  2023年   106篇
  2022年   172篇
  2021年   238篇
  2020年   255篇
  2019年   400篇
  2018年   280篇
  2017年   207篇
  2016年   139篇
  2015年   153篇
  2014年   389篇
  2013年   362篇
  2012年   333篇
  2011年   394篇
  2010年   254篇
  2009年   209篇
  2008年   239篇
  2007年   221篇
  2006年   184篇
  2005年   159篇
  2004年   103篇
  2003年   82篇
  2002年   70篇
  2001年   63篇
  2000年   65篇
  1999年   46篇
  1998年   33篇
  1997年   28篇
  1996年   12篇
  1995年   8篇
  1994年   10篇
  1993年   5篇
  1992年   7篇
  1991年   5篇
  1990年   4篇
  1988年   4篇
  1987年   3篇
  1985年   77篇
  1984年   104篇
  1983年   92篇
  1982年   93篇
  1981年   104篇
  1980年   76篇
  1979年   82篇
  1978年   81篇
  1977年   52篇
  1976年   60篇
  1975年   66篇
  1974年   54篇
  1973年   58篇
排序方式: 共有6253条查询结果,搜索用时 15 毫秒
1.
ObjectiveWe conducted a realist review to understand how (mechanism) and in what circumstances (context) evidence-based practices are sustained in rehabilitation (outcome).Data SourcesMEDLINE, Embase, reference lists, and targeted websites.Study SelectionTwo independent reviewers calibrated study selection; then 1 reviewer screened all titles and abstracts, while the second reviewer screened a random 20%. We repeated this process for full texts. We included 115 documents representing 61 implementation projects (8.9% of identified documents). Included documents described implementation projects in which physical therapists, occupational therapists, and/or speech-language pathologists were the target users of an evidence-based practice.Data ExtractionTwo reviewers repeated the independent process described in study selection to extract basic study and sustainability characteristics as well as context, mechanism, outcome, and strategy text.Data SynthesisUsing basic numerical analyses, we found that only 54% of evidence-based practices in rehabilitation are sustained. Furthermore, while authors who reported sustainability planning sustained the practice 94% of the time, sustainability planning in rehabilitation is rare (only reported 26% of the time). Extracted text was synthesized using the realist technique of inductive and deductive retroduction in which context, mechanism, outcome, and strategy text are combined into narrative explanations of how sustainability works. To inform these explanations, we applied normalization process theory and the theory of planned behavior. Collectively, the 52 identified narratives provide evidence for 3 patterns: (1) implementation and sustainability phases are interconnected, (2) continued use of the evidence-based practice can be interpreted as the ultimate sustainability outcome, and (3) intermediate sustainability outcomes (ie, fit/alignment, financial support, benefits, expertise) can become contextual features influencing other sustainability outcomes.ConclusionsImplementation teams can use the narrative explanations generated in this review to optimize sustainability planning. This can sustain practice changes and improve quality of care and patient outcomes. Future research should seek to iteratively refine the proposed narrative explanations.  相似文献   
2.
The coronavirus disease 2019, which is caused by severe acute respiratory syndrome coronavirus 2, was first identified in December 2019 in Wuhan, China, and has since spread rapidly, evolving into a full-blown pandemic. We would like to report our experience after 1 year of this pandemic in the surgical service of a district hospital in Spain. There have been many changes (including new protocols) that our service and the hospital have undergone, to adapt to the new situation. We believe that this experience can be useful for other professionals who have lived and are living a similar situation.  相似文献   
3.
4.
2022年北京冬奥会是全球瞩目的盛事,如何有效提升延庆赛区定点医院医疗卫生保障能力是冬奥会筹办过程中需要解决的重大课题。文章系统总结延庆赛区冬奥定点医院医疗保障特点、主要做法和经验,旨在为今后大型赛事定点医院的医疗保障提供参考。  相似文献   
5.
6.
7.
8.
《Vaccine》2019,37(44):6707-6713
BackgroundPrevious studies have suggested that statins decrease influenza vaccine effectiveness and increase risk of medically attended acute respiratory illness (MAARI).ObjectivesTo examine the association of incident statin use and MAARI in a cohort of influenza vaccine recipients.MethodsThis retrospective cohort study evaluated influenza vaccine recipients within the Tricare population. The primary outcome compared MAARI incidence during the follow-up period in a propensity score-matched cohort of incident statin users and statin non-users. Secondary analysis included propensity score-adjusted comparisons between incident statin users and statin non-users in the entire cohort and prespecified sub-cohorts with and without comorbidities. The propensity score was derived from 72 variables encompassing demographics, medical history, comorbidities, medication use, and healthcare utilization.ResultsMAARI incidence in statin users was similar to non-users in the propensity score-matched cohort (odds ratio [OR] 0.92; 95% confidence interval [CI] 0.84–1.01). In contrast, statin users with lower comorbidity had lower OR for MAARI compared to non-users (Charlson Score zero cohort: 0.85 [CI 0.74–0.98]; No Diabetes cohort: 0.88 [CI 0.80–0.96]).ConclusionIncident statin use was not associated with increased MAARI incidence and may be associated with lower incidence of MAARI in those with less comorbidity. This study thus offers reassurance regarding the effectiveness of the influenza vaccine in statin users.  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