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   1412299篇
  免费   113453篇
  国内免费   3333篇
耳鼻咽喉   18377篇
儿科学   46580篇
妇产科学   41100篇
基础医学   200994篇
口腔科学   37747篇
临床医学   126156篇
内科学   284568篇
皮肤病学   33425篇
神经病学   116942篇
特种医学   53860篇
外国民族医学   464篇
外科学   210638篇
综合类   32787篇
现状与发展   3篇
一般理论   487篇
预防医学   110204篇
眼科学   31544篇
药学   98583篇
  1篇
中国医学   3349篇
肿瘤学   81276篇
  2021年   10859篇
  2019年   11679篇
  2018年   16588篇
  2017年   12683篇
  2016年   14280篇
  2015年   16020篇
  2014年   22579篇
  2013年   33423篇
  2012年   45423篇
  2011年   47974篇
  2010年   28197篇
  2009年   27076篇
  2008年   44355篇
  2007年   46865篇
  2006年   47441篇
  2005年   45904篇
  2004年   43794篇
  2003年   41732篇
  2002年   40231篇
  2001年   73043篇
  2000年   74572篇
  1999年   61583篇
  1998年   17003篇
  1997年   15449篇
  1996年   15592篇
  1995年   14809篇
  1994年   13422篇
  1993年   12595篇
  1992年   45868篇
  1991年   43519篇
  1990年   41515篇
  1989年   39578篇
  1988年   36211篇
  1987年   35372篇
  1986年   32897篇
  1985年   31297篇
  1984年   23846篇
  1983年   20048篇
  1982年   12226篇
  1981年   10800篇
  1979年   20731篇
  1978年   14594篇
  1977年   12096篇
  1976年   11391篇
  1975年   11637篇
  1974年   14006篇
  1973年   13551篇
  1972年   12668篇
  1971年   11492篇
  1970年   10936篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
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   
2.
3.
4.
5.
6.
7.
8.
Metabolism describes the series of chemical reactions that are concerned with the provision of energy to biological systems. They may be divided into reactions involved in energy yield (catabolism: demand exceeds supply), and energy storage (anabolism: supply exceeds demand). Regulation of these pathways is critical for homeostasis, and derangements in metabolism are seen in a wide variety of pathological processes. Understanding metabolism is key to the treatment of many diseases, notably diabetes, as well as underpinning clinical nutritional support.  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