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   3632169篇
  免费   298343篇
  国内免费   14420篇
耳鼻咽喉   49272篇
儿科学   115350篇
妇产科学   94447篇
基础医学   573395篇
口腔科学   96056篇
临床医学   327098篇
内科学   649549篇
皮肤病学   94759篇
神经病学   313490篇
特种医学   140980篇
外国民族医学   498篇
外科学   554984篇
综合类   109127篇
现状与发展   25篇
一般理论   2479篇
预防医学   304907篇
眼科学   83492篇
药学   248579篇
  22篇
中国医学   10623篇
肿瘤学   175800篇
  2021年   55892篇
  2020年   35599篇
  2019年   58704篇
  2018年   72626篇
  2017年   55512篇
  2016年   61468篇
  2015年   75215篇
  2014年   109668篇
  2013年   175239篇
  2012年   107014篇
  2011年   108611篇
  2010年   120683篇
  2009年   124255篇
  2008年   95099篇
  2007年   99902篇
  2006年   109676篇
  2005年   105134篇
  2004年   106214篇
  2003年   96354篇
  2002年   85536篇
  2001年   118721篇
  2000年   112074篇
  1999年   108013篇
  1998年   67147篇
  1997年   64594篇
  1996年   62350篇
  1995年   57754篇
  1994年   51714篇
  1993年   48247篇
  1992年   74535篇
  1991年   70167篇
  1990年   65888篇
  1989年   64697篇
  1988年   59636篇
  1987年   58356篇
  1986年   54883篇
  1985年   54710篇
  1984年   49740篇
  1983年   45263篇
  1982年   42376篇
  1981年   39735篇
  1980年   37404篇
  1979年   40407篇
  1978年   35716篇
  1977年   32398篇
  1976年   29757篇
  1975年   28057篇
  1974年   29156篇
  1973年   28170篇
  1972年   26346篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
BackgroundThe aim of this study was to estimate the prevalence of dental prosthetic treatment and to investigate the demographic, social, economic and medical factors associated with the use of fixed and removable dentures in a representative sample of adults living in France.MethodsThe data were obtained from the 2002–2003 Decennial Health Survey, a cross-sectional study of a representative sample of the population living in France, which included 29,679 adults. Information was collected by interview. The variables collected were fixed denture, removable denture, age, gender, number of children, area of residence, nationality, educational attainment, family social status, employment status, annual household income per capita, supplementary insurance, chronic disease, eyesight problems/glasses, hearing problems/hearing aids. Multinomial logistic regression models were used to study the relationship between prosthetic treatment and demographic, socioeconomic and medical characteristics unadjusted, adjusted for age and adjusted for all the characteristics.ResultsThe prevalence of prosthetic treatment was 34.6% (95% confidence interval (CI): [34.1; 35.2]) for fixed prosthetic dentures and 13.8% (95% CI: [13.4; 14.2]) for removable prosthetic dentures. We showed a gradient between educational attainment and removable dentures; the odds ratio adjusted for all the variables (aOR) associated with no or primary education compared to post-secondary education was 2.56; 95% CI: [2.09; 3.13]. When annual household income per capita was low, subjects were less likely to report fixed dentures (aOR = 0.68; 95% CI: [0.62; 0.75]) than those with high annual household income per capita. Individuals without insurance less often reported fixed dentures than those with private insurance. Those reporting chronic disease were less likely to report fixed dentures (aOR = 0.87; 95% CI: [0.79; 0.95]) but more likely to report removable dentures (aOR = 1.29; 95% CI: [1.17; 1.43]) than those without chronic disease.ConclusionThis study reveals social, economic and medical inequalities in fixed and removable prosthetic treatment among adults in France.  相似文献   
5.
6.
7.
Background: Traumatic brain injury (TBI) results in verbal recall deficits and impaired processing of emotion encoded in facial appearance, prosody and the linguistic content of messages. Emotion facilitates memory (emotional memory advantage) for non-brain injured (NBI) individuals but the impact of emotion on verbal recall for linguistically encoded stimuli in TBI has not been explored.

Aims: The purpose of this study was to determine the effects of stimulus emotional content on verbal recall of words and paragraphs in TBI compared to NBI individuals.

Methods and procedures: Six 10-item lists, each with five emotional and five neutral words, and six paragraphs (three emotional, three neutral) were counterbalanced and presented in random order to 20 individuals with TBI and 44 NBI. The number of words from lists and the number of content units from paragraphs were compared for the two groups.

Outcomes and results: The NBI participants recalled more words from the lists and content units from the paragraphs than the individuals with TBI. Both groups recalled significantly more emotional than neutral words. NBI but not TBI participants had significantly greater recall for information in paragraphs with emotional content.

Conclusions: Participants with TBI showed impaired recall of words and paragraph content. Emotion facilitated word and paragraph content recall for neurotypical individuals but emotional memory advantage was limited to words for the TBI participants.  相似文献   

8.
9.
10.
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