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   183133篇
  免费   1318篇
  国内免费   49篇
耳鼻咽喉   1168篇
儿科学   6883篇
妇产科学   3297篇
基础医学   17658篇
口腔科学   1647篇
临床医学   13134篇
内科学   32525篇
皮肤病学   829篇
神经病学   17170篇
特种医学   8980篇
外科学   29392篇
综合类   2370篇
一般理论   8篇
预防医学   18995篇
眼科学   2972篇
药学   10005篇
中国医学   662篇
肿瘤学   16805篇
  2023年   69篇
  2022年   183篇
  2021年   345篇
  2020年   204篇
  2019年   291篇
  2018年   22174篇
  2017年   17536篇
  2016年   19704篇
  2015年   1179篇
  2014年   1159篇
  2013年   1199篇
  2012年   7634篇
  2011年   21687篇
  2010年   19178篇
  2009年   11820篇
  2008年   20051篇
  2007年   22246篇
  2006年   1052篇
  2005年   2622篇
  2004年   3735篇
  2003年   4671篇
  2002年   2823篇
  2001年   297篇
  2000年   416篇
  1999年   187篇
  1998年   242篇
  1997年   228篇
  1996年   107篇
  1995年   125篇
  1994年   109篇
  1993年   79篇
  1992年   47篇
  1991年   95篇
  1990年   129篇
  1989年   82篇
  1988年   55篇
  1987年   50篇
  1986年   28篇
  1985年   33篇
  1984年   26篇
  1983年   28篇
  1982年   33篇
  1980年   44篇
  1970年   22篇
  1938年   61篇
  1937年   25篇
  1935年   22篇
  1934年   30篇
  1932年   56篇
  1930年   46篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
Three new diketopiperazine derivatives (DKPs), saroclazines A–C (13) along with three known DKPs (46) were isolated from mangrove-derived fungi Sarocladium kiliense HDN11-84. Saroclazines A–B (1 and 2) possessed a free amide structure, which was first found in sulfur-containing aromatic DKPs. Their structures were elucidated by NMR, HRESIMS and X-ray. The cytotoxic activity of new compounds (13) was tested against HeLa cell lines, among which compound 2 showed an IC50 value of 4.2 µM.  相似文献   
9.
The community pharmacy setting is a venue that is readily accessible to the public. In addition, it is staffed by a pharmacist, who is a healthcare provider, trained and capable of delivering comprehensive pharmaceutical care. As such, community pharmacists have a colossal opportunity to serve as key contributors to patients’ health by ensuring appropriate use of medications, preventing medication misadventures, identifying drug-therapy needs, as well as by being involved in disease management, screening, and prevention programs. This unique position gives the pharmacist the privilege and duty to serve patients in roles other than solely that of the stereotypical drug dispenser.Worldwide, as well as in Israel, pharmacists already offer a variety of pharmaceutical services and tend to patients’ and the healthcare system’s needs. This article provides examples of professional, clinical or other specialty services offered by community pharmacists around the world and in Israel and describes these interventions as well as the evidence for their efficacy. Examples of such activities which were recently introduced to the Israeli pharmacy landscape due to legislative changes which expanded the pharmacist’s scope of practice include emergency supply of medications, pharmacists prescribing, and influenza vaccination. Despite the progress already made, further expansion of these opportunities is warranted but challenging. Independent prescribing, as practiced in the United Kingdom or collaborative drug therapy management programs, as practiced in the United States, expansion of vaccination programs, or wide-spread recognition and reimbursement for medication therapy management (MTM) programs are unrealized opportunities. Obstacles such as time constraints, lack of financial incentives, inadequate facilities and technology, and lack of professional buy-in, and suggested means for overcoming these challenges are also discussed.  相似文献   
10.
There is keen interest in many jurisdictions in finding ways to improve the way that research evidence informs policy. One possible mechanism for this is to embed academics within government agencies either as advisers or full staff members. Our commentary argues that, in addition to considering the role of academics in government as proposed by Glied and colleagues, we need to understand better how research and policy interactions function across policy sectors. We believe more comparative research is needed to understand if and why academics from certain disciplines are more likely to be recruited to work in some policy sectors rather than others. We caution against treating government as monolithic by advocating the same model for collaborative interaction between academics and government. Lastly, we contend that contextualized research is needed to illuminate important drivers of research and policy interactions before we can recommend what is likely to be more and less effective in different policy sectors.  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