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   216121篇
  免费   38633篇
  国内免费   1252篇
耳鼻咽喉   3451篇
儿科学   5895篇
妇产科学   4789篇
基础医学   21547篇
口腔科学   8248篇
临床医学   35696篇
内科学   48578篇
皮肤病学   5344篇
神经病学   23565篇
特种医学   8475篇
外国民族医学   9篇
外科学   32629篇
综合类   626篇
现状与发展   41篇
一般理论   106篇
预防医学   27259篇
眼科学   4010篇
药学   8177篇
中国医学   243篇
肿瘤学   17318篇
  2024年   796篇
  2023年   5451篇
  2022年   1912篇
  2021年   4494篇
  2020年   6549篇
  2019年   3912篇
  2018年   9167篇
  2017年   9261篇
  2016年   9981篇
  2015年   10352篇
  2014年   13674篇
  2013年   16428篇
  2012年   10676篇
  2011年   10490篇
  2010年   10299篇
  2009年   12734篇
  2008年   9700篇
  2007年   8858篇
  2006年   9748篇
  2005年   8031篇
  2004年   6541篇
  2003年   5946篇
  2002年   5434篇
  2001年   6198篇
  2000年   5495篇
  1999年   5531篇
  1998年   3605篇
  1997年   3154篇
  1996年   3292篇
  1995年   2778篇
  1994年   2113篇
  1993年   1855篇
  1992年   3399篇
  1991年   3016篇
  1990年   2779篇
  1989年   2639篇
  1988年   2436篇
  1987年   2072篇
  1986年   1962篇
  1985年   1836篇
  1984年   1353篇
  1983年   1257篇
  1982年   740篇
  1981年   648篇
  1980年   509篇
  1979年   918篇
  1978年   640篇
  1977年   540篇
  1974年   491篇
  1973年   465篇
排序方式: 共有10000条查询结果,搜索用时 15 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