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   1411247篇
  免费   113237篇
  国内免费   3337篇
耳鼻咽喉   18368篇
儿科学   46555篇
妇产科学   41057篇
基础医学   200785篇
口腔科学   37705篇
临床医学   126021篇
内科学   284414篇
皮肤病学   33357篇
神经病学   116906篇
特种医学   53848篇
外国民族医学   464篇
外科学   210494篇
综合类   32758篇
现状与发展   3篇
一般理论   487篇
预防医学   110026篇
眼科学   31511篇
药学   98563篇
  1篇
中国医学   3347篇
肿瘤学   81151篇
  2021年   10851篇
  2019年   11677篇
  2018年   16575篇
  2017年   12668篇
  2016年   14267篇
  2015年   16009篇
  2014年   22563篇
  2013年   33403篇
  2012年   45404篇
  2011年   47946篇
  2010年   28164篇
  2009年   27062篇
  2008年   44328篇
  2007年   46838篇
  2006年   47411篇
  2005年   45871篇
  2004年   43763篇
  2003年   41704篇
  2002年   40202篇
  2001年   73001篇
  2000年   74526篇
  1999年   61559篇
  1998年   16995篇
  1997年   15433篇
  1996年   15584篇
  1995年   14797篇
  1994年   13397篇
  1993年   12584篇
  1992年   45839篇
  1991年   43480篇
  1990年   41491篇
  1989年   39556篇
  1988年   36179篇
  1987年   35352篇
  1986年   32859篇
  1985年   31278篇
  1984年   23828篇
  1983年   20026篇
  1982年   12210篇
  1981年   10780篇
  1979年   20705篇
  1978年   14578篇
  1977年   12084篇
  1976年   11365篇
  1975年   11621篇
  1974年   13991篇
  1973年   13536篇
  1972年   12633篇
  1971年   11469篇
  1970年   10913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