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   1489894篇
  免费   117979篇
  国内免费   4118篇
耳鼻咽喉   19301篇
儿科学   48793篇
妇产科学   43015篇
基础医学   210962篇
口腔科学   39533篇
临床医学   132561篇
内科学   301790篇
皮肤病学   34952篇
神经病学   124232篇
特种医学   56972篇
外国民族医学   480篇
外科学   221828篇
综合类   34296篇
现状与发展   3篇
一般理论   525篇
预防医学   114644篇
眼科学   32709篇
药学   104759篇
  3篇
中国医学   3802篇
肿瘤学   86831篇
  2021年   12537篇
  2019年   13147篇
  2018年   18331篇
  2017年   14026篇
  2016年   15758篇
  2015年   17736篇
  2014年   24871篇
  2013年   36634篇
  2012年   49716篇
  2011年   52386篇
  2010年   31042篇
  2009年   29668篇
  2008年   48302篇
  2007年   50900篇
  2006年   51243篇
  2005年   49567篇
  2004年   47729篇
  2003年   45573篇
  2002年   43997篇
  2001年   75513篇
  2000年   76943篇
  1999年   63528篇
  1998年   17875篇
  1997年   16135篇
  1996年   16193篇
  1995年   15396篇
  1994年   13933篇
  1993年   13085篇
  1992年   47018篇
  1991年   44640篇
  1990年   42473篇
  1989年   40547篇
  1988年   37091篇
  1987年   36182篇
  1986年   33701篇
  1985年   32027篇
  1984年   24381篇
  1983年   20553篇
  1982年   12561篇
  1981年   11071篇
  1979年   21115篇
  1978年   14882篇
  1977年   12376篇
  1976年   11624篇
  1975年   11961篇
  1974年   14373篇
  1973年   13899篇
  1972年   12961篇
  1971年   11767篇
  1970年   11182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.
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