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   4752148篇
  免费   368736篇
  国内免费   15037篇
耳鼻咽喉   66014篇
儿科学   152928篇
妇产科学   127113篇
基础医学   715954篇
口腔科学   134538篇
临床医学   437344篇
内科学   857160篇
皮肤病学   115313篇
神经病学   392631篇
特种医学   186147篇
外国民族医学   819篇
外科学   714670篇
综合类   138089篇
现状与发展   24篇
一般理论   2835篇
预防医学   400698篇
眼科学   111757篇
药学   335871篇
  29篇
中国医学   12811篇
肿瘤学   233176篇
  2021年   56499篇
  2019年   59092篇
  2018年   75031篇
  2017年   57412篇
  2016年   63451篇
  2015年   76537篇
  2014年   110964篇
  2013年   176625篇
  2012年   130022篇
  2011年   136863篇
  2010年   128275篇
  2009年   128940篇
  2008年   123224篇
  2007年   131720篇
  2006年   139726篇
  2005年   134410篇
  2004年   136004篇
  2003年   125377篇
  2002年   114861篇
  2001年   173872篇
  2000年   170010篇
  1999年   155752篇
  1998年   73075篇
  1997年   68724篇
  1996年   66952篇
  1995年   62358篇
  1994年   56541篇
  1993年   52579篇
  1992年   117308篇
  1991年   113874篇
  1990年   109741篇
  1989年   107434篇
  1988年   99671篇
  1987年   97734篇
  1986年   93322篇
  1985年   91301篇
  1984年   75242篇
  1983年   66910篇
  1982年   51078篇
  1981年   47456篇
  1980年   44661篇
  1979年   67742篇
  1978年   53438篇
  1977年   46853篇
  1976年   43882篇
  1975年   44499篇
  1974年   50233篇
  1973年   48586篇
  1972年   45499篇
  1971年   42468篇
排序方式: 共有10000条查询结果,搜索用时 0 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.
8.
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   

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