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   1441095篇
  免费   114723篇
  国内免费   3477篇
耳鼻咽喉   18701篇
儿科学   47208篇
妇产科学   41585篇
基础医学   206520篇
口腔科学   38388篇
临床医学   128369篇
内科学   289923篇
皮肤病学   34151篇
神经病学   119965篇
特种医学   55118篇
外国民族医学   464篇
外科学   214698篇
综合类   32887篇
现状与发展   3篇
一般理论   520篇
预防医学   111492篇
眼科学   32191篇
药学   100641篇
  1篇
中国医学   3368篇
肿瘤学   83102篇
  2021年   11149篇
  2019年   12093篇
  2018年   17046篇
  2017年   13057篇
  2016年   14761篇
  2015年   16561篇
  2014年   23225篇
  2013年   34427篇
  2012年   46812篇
  2011年   49451篇
  2010年   29200篇
  2009年   28042篇
  2008年   46000篇
  2007年   48501篇
  2006年   48990篇
  2005年   47578篇
  2004年   45373篇
  2003年   43306篇
  2002年   41854篇
  2001年   73319篇
  2000年   74777篇
  1999年   61904篇
  1998年   17437篇
  1997年   15796篇
  1996年   15925篇
  1995年   15093篇
  1994年   13667篇
  1993年   12814篇
  1992年   46029篇
  1991年   43666篇
  1990年   41643篇
  1989年   39705篇
  1988年   36336篇
  1987年   35481篇
  1986年   32980篇
  1985年   31430篇
  1984年   23997篇
  1983年   20178篇
  1982年   12393篇
  1981年   10938篇
  1979年   20792篇
  1978年   14705篇
  1977年   12201篇
  1976年   11479篇
  1975年   11707篇
  1974年   14082篇
  1973年   13622篇
  1972年   12716篇
  1971年   11521篇
  1970年   10962篇
排序方式: 共有10000条查询结果,搜索用时 0 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