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   2479628篇
  免费   183947篇
  国内免费   5543篇
耳鼻咽喉   35137篇
儿科学   78898篇
妇产科学   71821篇
基础医学   348495篇
口腔科学   71389篇
临床医学   216654篇
内科学   488120篇
皮肤病学   57314篇
神经病学   201593篇
特种医学   96315篇
外国民族医学   879篇
外科学   377157篇
综合类   57769篇
现状与发展   8篇
一般理论   866篇
预防医学   184854篇
眼科学   57910篇
药学   180521篇
  5篇
中国医学   5451篇
肿瘤学   137962篇
  2018年   25411篇
  2017年   19715篇
  2016年   22081篇
  2015年   24824篇
  2014年   35183篇
  2013年   52930篇
  2012年   70695篇
  2011年   74859篇
  2010年   44291篇
  2009年   42685篇
  2008年   70397篇
  2007年   75455篇
  2006年   76454篇
  2005年   74166篇
  2004年   71294篇
  2003年   68461篇
  2002年   66916篇
  2001年   119338篇
  2000年   122416篇
  1999年   102780篇
  1998年   28515篇
  1997年   25890篇
  1996年   25429篇
  1995年   24121篇
  1994年   22222篇
  1993年   20752篇
  1992年   78766篇
  1991年   75695篇
  1990年   73550篇
  1989年   70978篇
  1988年   65734篇
  1987年   64332篇
  1986年   61204篇
  1985年   58069篇
  1984年   44037篇
  1983年   37252篇
  1982年   22600篇
  1981年   20386篇
  1979年   40593篇
  1978年   28833篇
  1977年   24629篇
  1976年   22598篇
  1975年   24713篇
  1974年   29345篇
  1973年   28572篇
  1972年   27094篇
  1971年   24968篇
  1970年   23802篇
  1969年   22573篇
  1968年   21305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.
9.
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   
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