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   12341篇
  免费   1003篇
  国内免费   267篇
耳鼻咽喉   73篇
儿科学   255篇
妇产科学   77篇
基础医学   721篇
口腔科学   300篇
临床医学   3870篇
内科学   715篇
皮肤病学   40篇
神经病学   547篇
特种医学   190篇
外国民族医学   2篇
外科学   870篇
综合类   2475篇
现状与发展   1篇
预防医学   1567篇
眼科学   47篇
药学   792篇
  149篇
中国医学   809篇
肿瘤学   111篇
  2024年   53篇
  2023年   330篇
  2022年   651篇
  2021年   795篇
  2020年   744篇
  2019年   504篇
  2018年   443篇
  2017年   557篇
  2016年   499篇
  2015年   425篇
  2014年   1063篇
  2013年   863篇
  2012年   808篇
  2011年   909篇
  2010年   669篇
  2009年   641篇
  2008年   558篇
  2007年   586篇
  2006年   456篇
  2005年   355篇
  2004年   276篇
  2003年   241篇
  2002年   133篇
  2001年   148篇
  2000年   126篇
  1999年   98篇
  1998年   84篇
  1997年   81篇
  1996年   66篇
  1995年   58篇
  1994年   42篇
  1993年   38篇
  1992年   42篇
  1991年   31篇
  1990年   30篇
  1989年   18篇
  1988年   16篇
  1987年   20篇
  1986年   10篇
  1985年   29篇
  1984年   16篇
  1983年   8篇
  1982年   11篇
  1981年   19篇
  1980年   12篇
  1979年   12篇
  1978年   12篇
  1977年   5篇
  1976年   8篇
  1974年   4篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
In this article, we draw on recent scholarly work in the poststructuralist analysis of policy to consider how policy itself functions as a key site in the constitution of alcohol ‘problems’, and the political implications of these problematisations. We do this by examining Australian alcohol policy as it relates to young adults (18–24 years old). Our critical analysis focuses on three national alcohol policies (1990, 2001 and 2006) and two Victorian state alcohol policies (2008 and 2013), which together span a 25-year period. We argue that Australian alcohol policies have conspicuously ignored young adult men, despite their ongoing over-representation in the statistical ‘evidence base’ on alcohol-related harm, while increasingly problematising alcohol consumption amongst other population subgroups. We also identify the development of a new problem representation in Australian alcohol policy, that of ‘intoxication’ as the leading cause of alcohol-related harm and rising hospital admissions, and argue that changes in the classification and diagnosis of intoxication may have contributed to its prioritisation and problematisation in alcohol policy at the expense of other forms of harm. Finally, we draw attention to how preliminary and inconclusive research on the purported association between binge drinking and brain development in those under 25 years old has been mobilised prematurely to support calls to increase the legal purchasing age from 18 to 21 years. Our critical analysis of the treatment of these three issues – gender, intoxication, and brain development – is intended to highlight the ways in which policy functions as a key site in the constitution of alcohol ‘problems’.  相似文献   
4.
The present study compared the level of occupational strain and work ability among Han, Hui, Uygur, Hui, and Kazakh teachers, and explored ethnic differences based on the associations of psychosocial factors at work, occupational strain, and work ability. A cross-sectional survey was conducted among 2,941 teachers in primary and secondary schools in Xinjiang Province, China. Psychosocial factors, occupational strain, and work ability were measured using the Occupation Stress Inventory—Revised Edition (OSI-R) and Work Ability Index. Han and Hui teachers experienced reduced work ability compared with Uygur and Kazakh teachers, and this finding was caused, in part, by exposure to psychosocial factors at work. The vocational and psychological strains caused by these factors play an important role in reduced work ability among all ethnic teacher groups. The findings indicate the importance of taking action to reduce occupational strain for promoting teachers' work ability in multiethnic workplaces.  相似文献   
5.
目的探讨案例教学法在消化内科见习课的教学效果和体会。方法选取2017年10月—2017年12月在消化内科进行见习课的2015级39-40班护理本科学生44例(全部为女生),抓阄分成对照组(22人)和试验组(22人),对照组给予传统的带教方法,试验组给予案例教学法教学,比较两组护生在理论、技能、综合能力和对带教满意度方面有无差异。两组学生在性别、年龄、专业前的课程成绩比较,差异无统计学意义(均P>0.05)。结果观察组在理论考核成绩、操作考核成绩、教学满意度等方面均高于对照组。结论案例教学法能提高护理教学的教学效果,增加学生的理论、操作能力,提高护理临床思维能力,提升学生的学习主动性和积极性。  相似文献   
6.
7.
8.
《Ticks and Tick》2020,11(6):101547
Ferritin 2 (FER2) is an iron storage protein, which has been shown to be critical for iron homeostasis during blood feeding and reproduction in ticks and is therefore suitable as a component for anti-tick vaccines. In this study, we identified the FER2 of Ixodes persulcatus, a major vector for zoonotic diseases such as Lyme borreliosis and tick-borne relapsing fever in Japan, and investigated its functions. Ixodes persulcatus-derived ferritin 2 (Ip-FER2) showed concentration-dependent iron-binding ability and high amino acid conservation, consistent with FER2s of other tick species. Vaccines containing the recombinant Ip-FER2 elicited a significant reduction of the engorgement weight of adult I. persulcatus. Interestingly, the reduction of engorgement weight was also observed in Ixodes ovatus, a sympatric species of I. persulcatus. In silico analyses of FER2 sequences of I. persulcatus and other ticks showed a greater similarity with I. scapularis and I. ricinus and lesser similarity with Hyalomma anatolicum, Haemaphysalis longicornis, Rhipicephalus microplus, and R. appendiculatus. Moreover, it was observed that the tick FER2 sequences possess conserved regions within the primary structures, and in silico epitope mapping analysis revealed that antigenic regions were also conserved, particularly among Ixodes spp ticks. In conclusion, the data support further protective tick vaccination applications using the Ip-FER2 antigens identified herein.  相似文献   
9.
10.
教学查房是床旁教学的一种重要手段,对住院医师进行教学查房能够有效提高住院医师的岗位胜任力和职业能力,培养急诊住院医师的急诊临床思维。近年来由于国家住院医师规范化培训改革在不断深入,对急诊住院医师的教学查房引起了人们的高度关注,然后在实际的急诊住院医师的教学查房中却还存在着诸多问题,教学查房与日常的临床查房概念混淆、教学查房准备不充分、教学查房目的不明确以及教学查房的互动性不强都严重影响了教学查房的质量。因此需要积极探究急诊住院医师的教学查房的有效模式,从而不断提升住院医师的临床实践能力。  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