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   12638篇
  免费   1128篇
  国内免费   266篇
耳鼻咽喉   86篇
儿科学   615篇
妇产科学   319篇
基础医学   1787篇
口腔科学   288篇
临床医学   1373篇
内科学   2540篇
皮肤病学   169篇
神经病学   1176篇
特种医学   276篇
外科学   1943篇
综合类   222篇
一般理论   6篇
预防医学   1330篇
眼科学   198篇
药学   883篇
  2篇
中国医学   40篇
肿瘤学   779篇
  2023年   112篇
  2022年   86篇
  2021年   391篇
  2020年   237篇
  2019年   325篇
  2018年   378篇
  2017年   267篇
  2016年   241篇
  2015年   269篇
  2014年   365篇
  2013年   555篇
  2012年   785篇
  2011年   788篇
  2010年   415篇
  2009年   403篇
  2008年   687篇
  2007年   737篇
  2006年   665篇
  2005年   626篇
  2004年   625篇
  2003年   548篇
  2002年   520篇
  2001年   312篇
  2000年   281篇
  1999年   233篇
  1998年   135篇
  1997年   118篇
  1996年   94篇
  1995年   96篇
  1994年   81篇
  1993年   80篇
  1992年   192篇
  1991年   181篇
  1990年   161篇
  1989年   159篇
  1988年   150篇
  1987年   152篇
  1986年   113篇
  1985年   101篇
  1984年   98篇
  1983年   102篇
  1982年   63篇
  1979年   82篇
  1978年   67篇
  1977年   57篇
  1976年   50篇
  1974年   52篇
  1973年   59篇
  1971年   54篇
  1969年   56篇
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
1.
2.
3.
4.
5.
6.
The jobs of Latino manual laborers place their mental and physical health at risk. This study evaluates the associations among musculoskeletal pain, mental health, and work organization in Latino manual laborers. Farmworkers and nonfarmworkers (n = 189) in North Carolina were interviewed for self-reported musculoskeletal pain, depressive symptoms, stress, work safety climate, and precarious job status. More nonfarmworkers than farmworkers had neck and shoulder pain, but they did not differ in other areas of musculoskeletal pain. Depressive symptoms had a significant association with neck and shoulder pain (p < .05). Precariousness had a significant association with back pain (p < .05). Farmworker participants had H-2A visas and were afforded some protection compared to nonfarmworker manual workers. Research is needed to improve policy that relieves pain and improves mental health for all Latino manual workers.  相似文献   
7.
8.
BackgroundHepatopancreatobiliary (HPB) surgery fellowship training has multiple paths. Prospective trainees and employers must understand the differences between training pathways. This study examines self-reported fellowship experiences and current scope of practice across three pathways.MethodsAn online survey was disseminated to 654 surgeons. These included active Americas Hepato-Pancreato-Biliary Association (AHPBA) members and recent graduates of HPB, transplant–HPB and HPB–heavy surgical oncology fellowships.ResultsA total of 416 (64%) surgeons responded. Most respondents were male (89%) and most were practising in an academic setting (83%). 290 (70%) respondents underwent formal fellowship training. Although fellowship experiences varied, current practice was largely similar. Minimally invasive surgery (MIS) and ultrasound were the most commonly identified areas of training deficiencies and were, respectively, cited as such by 47% and 34% of HPB-, 49% and 50% of transplant-, and 52% and 25% of surgical oncology-trained respondents. Non-HPB cases performed in current practice included gastrointestinal (GI) and general surgery cases (56% and 49%, respectively) for HPB-trained respondents, transplant and general surgery cases (87% and 21%, respectively) for transplant-trained respondents, and GI surgery and non-HPB surgical oncology cases (70% and 28%, respectively) for surgical oncology-trained respondents.ConclusionsFellowship training in HPB surgery varies by training pathway. Training in MIS and ultrasound is deficient in each pathway. The ultimate scope of non-transplant HPB practice appears similar across training pathways. Thus, training pathway choice is best guided by the training experience desired and non-HPB components of anticipated practice.  相似文献   
9.
10.
For patients who receive a liver transplant (LTX) for alcoholic liver disease (ALD), investigators are focusing beyond survival to determine specific alcohol use outcomes. Studies suggest the use of alcohol ranges from 8 to 22% for the first post-transplant year with cumulative rates reaching 30 to 40% by 5 years following transplantation. Yet while investigators are interested in determining specific rates of alcohol use and predictors of use, only three studies since 1990 have been prospective. In 1998, we began a prospective study of post-LTX alcohol consumption in ALD recipients using multiple repeated measures of alcohol use. After 5 years of follow-up, we found that 22% had used any alcohol by the first year and 42% had a drink by 5 years. By 5 years, 26% drank at a heavier use (binge) pattern and 20% drank in a frequent pattern. In a univariate model, predictors of alcohol use included pre-transplant length of sobriety, a diagnosis of alcohol dependence, a history of other substance use, and prior alcohol rehabilitation.  相似文献   
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