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   2371438篇
  免费   172869篇
  国内免费   3396篇
耳鼻咽喉   32227篇
儿科学   76443篇
妇产科学   63180篇
基础医学   351078篇
口腔科学   63939篇
临床医学   213651篇
内科学   461331篇
皮肤病学   51967篇
神经病学   187286篇
特种医学   88497篇
外国民族医学   492篇
外科学   356814篇
综合类   47944篇
现状与发展   12篇
一般理论   891篇
预防医学   184830篇
眼科学   54994篇
药学   176850篇
  11篇
中国医学   4603篇
肿瘤学   130663篇
  2021年   19402篇
  2019年   19987篇
  2018年   27530篇
  2017年   20714篇
  2016年   23186篇
  2015年   26135篇
  2014年   36792篇
  2013年   55053篇
  2012年   76156篇
  2011年   80964篇
  2010年   47970篇
  2009年   45365篇
  2008年   75911篇
  2007年   80868篇
  2006年   81727篇
  2005年   79213篇
  2004年   75799篇
  2003年   72928篇
  2002年   70534篇
  2001年   108929篇
  2000年   111609篇
  1999年   93696篇
  1998年   27260篇
  1997年   23881篇
  1996年   24267篇
  1995年   22911篇
  1994年   21057篇
  1993年   19889篇
  1992年   72121篇
  1991年   70173篇
  1990年   68479篇
  1989年   65743篇
  1988年   60390篇
  1987年   59212篇
  1986年   55292篇
  1985年   53077篇
  1984年   39398篇
  1983年   33489篇
  1982年   19966篇
  1979年   35916篇
  1978年   25703篇
  1977年   21284篇
  1976年   20386篇
  1975年   21857篇
  1974年   26198篇
  1973年   24847篇
  1972年   23240篇
  1971年   22062篇
  1970年   20275篇
  1969年   19347篇
排序方式: 共有10000条查询结果,搜索用时 5 毫秒
41.
42.
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   
43.
44.
45.
46.
47.
48.
49.
The aim of the present study was to evaluate the antimicrobial activity of two synbiotic combinations, Lactobacillus fermentum with short-chain fructooligosaccharides (FOS-LF) and Bifidobacterium longum with isomaltooligosaccharides (IMO-BL), against enterohaemorrhagic Escherichia coli O157:H7 and enteropathogenic E. coli O86. Antimicrobial activity was determined (1) by co-culturing the synbiotics and pathogens in batch cultures, and (2) with the three-stage continuous culture system (gut model), inoculated with faecal slurry from an elderly donor. In the co-culture experiments, IMO-BL was significantly inhibitory to both E. coli strains, while FOS-LF was slightly inhibitory or not inhibitory. Factors other than acid production appeared to play a role in the inhibition. In the gut models, both synbiotics effectively inhibited E. coli O157 in the first vessel, but not in vessels 2 and 3. E. coli O86 was not significantly inhibited.  相似文献   
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