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   32468篇
  免费   2070篇
  国内免费   83篇
耳鼻咽喉   416篇
儿科学   1527篇
妇产科学   740篇
基础医学   3202篇
口腔科学   561篇
临床医学   2899篇
内科学   6987篇
皮肤病学   480篇
神经病学   2538篇
特种医学   1241篇
外科学   5792篇
综合类   577篇
一般理论   25篇
预防医学   2226篇
眼科学   997篇
药学   2373篇
  1篇
中国医学   95篇
肿瘤学   1944篇
  2023年   202篇
  2022年   344篇
  2021年   1018篇
  2020年   570篇
  2019年   901篇
  2018年   1022篇
  2017年   701篇
  2016年   755篇
  2015年   753篇
  2014年   1216篇
  2013年   1586篇
  2012年   2411篇
  2011年   2307篇
  2010年   1374篇
  2009年   1159篇
  2008年   1844篇
  2007年   1834篇
  2006年   1747篇
  2005年   1731篇
  2004年   1571篇
  2003年   1408篇
  2002年   1265篇
  2001年   582篇
  2000年   586篇
  1999年   504篇
  1998年   303篇
  1997年   242篇
  1996年   224篇
  1995年   209篇
  1994年   175篇
  1993年   138篇
  1992年   339篇
  1991年   296篇
  1990年   253篇
  1989年   250篇
  1988年   229篇
  1987年   216篇
  1986年   191篇
  1985年   197篇
  1984年   195篇
  1983年   187篇
  1982年   116篇
  1981年   108篇
  1980年   111篇
  1979年   144篇
  1978年   107篇
  1977年   87篇
  1974年   91篇
  1973年   124篇
  1972年   115篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
Demographic projections for hip fragility fractures indicate a rising annual incidence by virtue of a multimorbid, ageing population with more noncommunicable diseases (NCDs). NCDs are characterised by slow progression and long duration ranging from ischaemic cardiovascular disease, cerebrovascular disease, diabetes, chronic obstructive pulmonary disease to various cancers. Management of this disease burden often involves commencing patients on oral anticoagulants to reduce the risk of thromboembolic events. The use of direct oral anticoagulants (DOACs) in clinical practice has increased due to their rapid onset of action, short half-life and predictable anticoagulant effects, without the need for routine monitoring. Safe and timely surgical intervention relies on reversal of anticoagulants. However, the lack of specific evidence-based guidelines for the perioperative management of patients on DOACs with hip fractures has proved challenging; in particular, the accessibility of DOAC-specific assays, justification of the cost-benefit ratio of targeted reversal agents and indications for neuraxial anaesthesia. This has led to potentially avoidable delays in surgical intervention. Following a literature review of the pharmacokinetic and pharmacodynamics of commonly used DOACs in our region including the role of surrogate markers, we propose a systematic, evidence-based guideline to the perioperative management of hip fractures DOACs. We believe this standardised protocol can be easily replicated between hospitals. We recommend that if patients are deemed suitable for a general anaesthesia, with satisfactory renal function, optimal surgical time should be 24 h following the last ingested dose of DOAC.  相似文献   
4.
5.
6.
7.
The growth of online support groups has led to an expression effects paradigm within the health communication literature. Although religious support expression is characterized as a typical subdimension of emotional support, we argue that in the context of a life-threatening illness, the inclusion of a religious component creates a unique communication process. Using data from an online group for women with breast cancer, we test a theoretical expression effects model. Results demonstrate that for breast cancer patients, religious support expression has distinct effects from general emotional support messages, which highlights the need to further theorize expression effects along these lines.  相似文献   
8.
9.
Peacekeeping missions involve experiences that may impact the mental health of participating soldiers. However, research on the long-term mental health consequences of peacekeeping is sparse. The present study aimed to find the prevalence of mental health problems (MHPs), possible MHP predictors, and associations between predictors and MHPs in Norwegian peacekeepers 18–38 years after deployment to a United Nations peacekeeping mission. We used data from a cross-sectional, postdeployment survey of Norwegian peacekeepers who served in Lebanon between 1978 and 1998 (N = 10,605). Participants were assessed for posttraumatic stress disorder (PTSD); anxiety; depression; insomnia; alcohol misuse; drug misuse; and exposure to pre-, peri-, and postdeployment stressors. Logistic regressions were executed to explore key variables associated with MHPs. Total MHP prevalence was 15.1%, 95% CI [14.4, 15.8]. The estimates for specific disorders were 0.1% for drug misuse, 3.4% for alcohol misuse, 4.0% for depression, 6.2% for PTSD, 6.4% for anxiety, and 9.3% for insomnia. Postdeployment stressors, OR = 1.91, 95% CI [1.79, 2.04]; employment status, OR = 1.41, 95% CI [1.33, 1.48]; and traumatic exposure during deployment, OR = 1.11, 95% CI [1.09, 1.12], were positively related to PTSD, χ2(17, N = 8,568) = 1,791.299, p < .001. Similar patterns were found for the other MHPs. Considering that most participants (84.9%) reported low symptom levels, our findings challenge the widespread public perception that most peacekeepers have MHPs. Moreover, our results indicate that future peacekeepers should be prepared for challenges they may face not only during deployment but also in the years following their homecoming.  相似文献   
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