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   899823篇
  免费   62279篇
  国内免费   2328篇
耳鼻咽喉   12476篇
儿科学   28679篇
妇产科学   26150篇
基础医学   126590篇
口腔科学   24696篇
临床医学   74757篇
内科学   183156篇
皮肤病学   18984篇
神经病学   71398篇
特种医学   36446篇
外国民族医学   339篇
外科学   142117篇
综合类   19029篇
一般理论   247篇
预防医学   64557篇
眼科学   20083篇
药学   63829篇
中国医学   1798篇
肿瘤学   49099篇
  2018年   9052篇
  2017年   7160篇
  2016年   7677篇
  2015年   8724篇
  2014年   12369篇
  2013年   19209篇
  2012年   25650篇
  2011年   27260篇
  2010年   16574篇
  2009年   15783篇
  2008年   26127篇
  2007年   27737篇
  2006年   27915篇
  2005年   27447篇
  2004年   26296篇
  2003年   25469篇
  2002年   25056篇
  2001年   41359篇
  2000年   42556篇
  1999年   36265篇
  1998年   9966篇
  1997年   9150篇
  1996年   9083篇
  1995年   8445篇
  1994年   8082篇
  1993年   7585篇
  1992年   28198篇
  1991年   26982篇
  1990年   26413篇
  1989年   25348篇
  1988年   23557篇
  1987年   23172篇
  1986年   22253篇
  1985年   21153篇
  1984年   15808篇
  1983年   13477篇
  1982年   8090篇
  1979年   14594篇
  1978年   10209篇
  1977年   8627篇
  1976年   8147篇
  1975年   8959篇
  1974年   10698篇
  1973年   10183篇
  1972年   9664篇
  1971年   8919篇
  1970年   8585篇
  1969年   8029篇
  1968年   7685篇
  1967年   7086篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
45.
Fibroepithelial polyps (FEPs) are common, benign intraoral lesions that tend to develop slowly at predictable sites, often in response to local irritation or trauma. Historical precedent often results in referral to oral and maxillofacial surgery (OMFS) departments for biopsy, often irrespective of symptoms, and histological assessment. OMFS and pathology services are struggling to cope with an increasing workload that will potentially lead to widespread delays to diagnosis and treatment. Over the past 20 years, clinical pathways and guidance have been developed to ensure that healthcare interventions, such as the removal of third molars, tonsils, skin tags, and benign moles, are evidence-based, have a net patient benefit, and ensure the best use of finite NHS resources. However, no such guidance exists for intraoral lesions and we regard this as an oversight. We analysed the removal of 682 FEPs over a seven-year period and report sensitivities of 92.4% for a “confirmed clinical suspicion of an FEP” and 99.7% for a “confirmed clinical suspicion of a benign diagnosis”. The incidence of non-benign disease was 0.3%. Primary care dentists should be able to diagnose and monitor FEPs and refer only if symptoms are serious or in high-risk patients or sites. Adopting this practice across the UK could free up to 1825 four-hour OMFS clinics, 405 hours of consultant histopathologists’ time, and recurring savings to the NHS estimated to be in the region of £620 000/annum. We believe that the removal of FEPs should be reclassified as an “intervention not normally funded”, and the time and resources put to better use treating patients with lesions of questionable pathology.  相似文献   
46.
Journal of Behavioral Medicine - Understanding associations between mothers’ and children’s physical activity and sedentary behavior on more fine-grained timescales can provide insights...  相似文献   
47.
48.
49.
50.

Objective

To examine the experience of interracial anxiety among health professionals and how it may affect the quality of their interactions with patients from racially marginalized populations. We explored the influence of prior interracial exposure—specifically through childhood neighborhoods, college student bodies, and friend groups—on interracial anxiety among medical students and residents. We also examined whether levels of interracial anxiety change from medical school through residency.

Data Source

Web-based longitudinal survey data from the Medical Student Cognitive Habits and Growth Evaluation Study.

Study Design

We used a retrospective longitudinal design with four observations for each trainee. The study population consisted of non-Black US medical trainees surveyed in their 1st and 4th years of medical school and 2nd and 3rd years of residency. Mixed effects longitudinal models were used to assess predictors of interracial anxiety and assess changes in interracial anxiety scores over time.

Principal Findings

In total, 3155 non-Black medical trainees were followed for 7 years. Seventy-eight percent grew up in predominantly White neighborhoods. Living in predominantly White neighborhoods and having less racially diverse friends were associated with higher levels of interracial anxiety among medical trainees. Trainees' interracial anxiety scores did not substantially change over time; interracial anxiety was highest in the 1st year of medical school, lowest in the 4th year, and increased slightly during residency.

Conclusions

Neighborhood and friend group composition had independent effects on interracial anxiety, indicating that premedical racial socialization may affect medical trainees' preparedness to interact effectively with diverse patient populations. Additionally, the lack of substantial change in interracial anxiety throughout medical training suggests the importance of providing curricular tools and structure (e.g., instituting interracial cooperative learning activities) to foster the development of healthy interracial relationships.  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