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   1411149篇
  免费   113214篇
  国内免费   3332篇
耳鼻咽喉   18361篇
儿科学   46569篇
妇产科学   41072篇
基础医学   200770篇
口腔科学   37736篇
临床医学   125993篇
内科学   284342篇
皮肤病学   33358篇
神经病学   116863篇
特种医学   53828篇
外国民族医学   464篇
外科学   210529篇
综合类   32754篇
现状与发展   3篇
一般理论   487篇
预防医学   110020篇
眼科学   31527篇
药学   98503篇
  1篇
中国医学   3347篇
肿瘤学   81168篇
  2021年   10854篇
  2019年   11671篇
  2018年   16579篇
  2017年   12671篇
  2016年   14258篇
  2015年   16007篇
  2014年   22561篇
  2013年   33404篇
  2012年   45395篇
  2011年   47931篇
  2010年   28159篇
  2009年   27054篇
  2008年   44320篇
  2007年   46826篇
  2006年   47385篇
  2005年   45859篇
  2004年   43748篇
  2003年   41702篇
  2002年   40187篇
  2001年   73006篇
  2000年   74534篇
  1999年   61560篇
  1998年   16989篇
  1997年   15430篇
  1996年   15582篇
  1995年   14793篇
  1994年   13396篇
  1993年   12583篇
  1992年   45844篇
  1991年   43484篇
  1990年   41496篇
  1989年   39562篇
  1988年   36194篇
  1987年   35355篇
  1986年   32866篇
  1985年   31277篇
  1984年   23828篇
  1983年   20027篇
  1982年   12209篇
  1981年   10779篇
  1979年   20701篇
  1978年   14576篇
  1977年   12084篇
  1976年   11365篇
  1975年   11619篇
  1974年   13988篇
  1973年   13533篇
  1972年   12633篇
  1971年   11469篇
  1970年   10910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