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   128061篇
  免费   31942篇
  国内免费   1256篇
耳鼻咽喉   2774篇
儿科学   3612篇
妇产科学   3214篇
基础医学   5529篇
口腔科学   6134篇
临床医学   28467篇
内科学   31262篇
皮肤病学   3826篇
神经病学   13853篇
特种医学   4745篇
外国民族医学   4篇
外科学   23874篇
综合类   943篇
现状与发展   43篇
一般理论   27篇
预防医学   15354篇
眼科学   3381篇
药学   3633篇
  1篇
中国医学   270篇
肿瘤学   10313篇
  2024年   566篇
  2023年   5296篇
  2022年   1816篇
  2021年   4216篇
  2020年   6160篇
  2019年   3128篇
  2018年   8246篇
  2017年   8301篇
  2016年   8977篇
  2015年   9144篇
  2014年   11844篇
  2013年   13855篇
  2012年   6432篇
  2011年   6075篇
  2010年   8230篇
  2009年   10325篇
  2008年   5346篇
  2007年   4348篇
  2006年   5269篇
  2005年   3598篇
  2004年   2841篇
  2003年   2274篇
  2002年   2034篇
  2001年   2138篇
  2000年   1410篇
  1999年   1918篇
  1998年   2227篇
  1997年   2000篇
  1996年   2066篇
  1995年   1768篇
  1994年   1158篇
  1993年   972篇
  1992年   871篇
  1991年   776篇
  1990年   622篇
  1989年   627篇
  1988年   592篇
  1987年   463篇
  1986年   430篇
  1985年   400篇
  1984年   320篇
  1983年   344篇
  1982年   272篇
  1981年   246篇
  1980年   157篇
  1979年   110篇
  1978年   159篇
  1977年   148篇
  1976年   116篇
  1974年   106篇
排序方式: 共有10000条查询结果,搜索用时 468 毫秒
41.
42.
Bowel diseases of prematurity, including necrotizing enterocolitis, are dreaded ailments of neonates. Early diagnosis is difficult, with clinical and radiographic findings often inconclusive. We present a novel use of contrast-enhanced ultrasound in detection of pediatric bowel disease. Early identification of compromised blood flow or an at-risk bowel can be quantitatively detected and monitored. This ability has implications for guidance of emerging therapies, allowing targeting of inflammation. These findings represent an advancement in detection of bowel disease in neonates.  相似文献   
43.
44.
45.
The association between asbestos exposure, mainly in occupational settings, and malignant mesothelioma has been well established; this has prompted several countries to establish mesothelioma epidemiologic surveillance programs often at the request of national agencies. This review compares currently existing mesothelioma registries worldwide to develop a concept model for a US real-time case capture mesothelioma registry. Five countries were identified with a mesothelioma specific registry, including Italy, France, UK, Australia, and South Korea. All, except the UK, used interviews to collect exposure data. Linkage with the national death index was available or was in future plans for all registries. The registries have limited information on treatment, quality of life, and other patient-centered outcomes such as symptoms and pain management. To thoroughly collect exposure data, “real-time” enrollment is preferable; to maximize the capture of mesothelioma cases, optimal coverage, and a simplified consent process are needed.  相似文献   
46.
47.
48.
The profile and reach of physiotherapy has expanded in areas of extended scope of practice, and broader engagement with population needs beyond the individual treatment encounter. These changes raise increasingly complex ethical challenges evidenced by growth in physiotherapy-based ethics studies and discussions. This paper examines how a broad cross section of Australian physiotherapists perceive, interpret, and respond to ethical challenges in their work contexts and how professional codes of conduct are used in their practice. Using an interpretive qualitative methodology, purposive sampling of 88 members of national clinical special interest groups were recruited for focus group discussions. Narrative-based and thematic data analysis identified ethical challenges as emerging from specific clinical contexts, and influenced by health organizations, funding policies, workplace relationships, and individually held perspectives. Five themes were developed to represent these findings: (1) the working environment, (2) balancing diverse needs and expectation, (3) defining ethics, (4) striving to act ethically, and (5) talking about ethics. The results portray a diverse and complex ethical landscape where therapists encounter and grapple with ethical questions emerging from the impact of funding models and policies affecting clinical work, expanding boundaries and scope of practice and changing professional roles and relationships. Codes of conduct were described as foundational ethical knowledge but not always helpful for “in the moment” ethical decision-making. Based on this research, we suggest how codes of conduct, educators, and professional associations could cultivate and nurture ethics capability in physiotherapy practitioners for these contemporary challenges.  相似文献   
49.
50.
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