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   129854篇
  免费   32088篇
  国内免费   1141篇
耳鼻咽喉   2839篇
儿科学   3869篇
妇产科学   3128篇
基础医学   6604篇
口腔科学   5418篇
临床医学   31531篇
内科学   29953篇
皮肤病学   3595篇
神经病学   15360篇
特种医学   4273篇
外国民族医学   1篇
外科学   20683篇
综合类   465篇
现状与发展   40篇
一般理论   49篇
预防医学   18284篇
眼科学   2452篇
药学   3151篇
中国医学   49篇
肿瘤学   11339篇
  2024年   757篇
  2023年   5243篇
  2022年   1472篇
  2021年   3427篇
  2020年   5775篇
  2019年   2806篇
  2018年   7752篇
  2017年   7942篇
  2016年   8539篇
  2015年   8686篇
  2014年   11421篇
  2013年   13800篇
  2012年   6352篇
  2011年   6292篇
  2010年   8212篇
  2009年   10319篇
  2008年   5877篇
  2007年   4848篇
  2006年   5960篇
  2005年   4483篇
  2004年   3693篇
  2003年   3120篇
  2002年   2964篇
  2001年   2005篇
  2000年   1299篇
  1999年   1909篇
  1998年   2433篇
  1997年   2177篇
  1996年   2160篇
  1995年   1855篇
  1994年   1264篇
  1993年   1092篇
  1992年   851篇
  1991年   728篇
  1990年   586篇
  1989年   603篇
  1988年   585篇
  1987年   454篇
  1986年   430篇
  1985年   373篇
  1984年   346篇
  1983年   370篇
  1982年   317篇
  1981年   299篇
  1980年   190篇
  1979年   108篇
  1978年   155篇
  1977年   155篇
  1976年   110篇
  1974年   87篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
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   
45.
46.
47.
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   
48.
49.
50.
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   
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