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   2735866篇
  免费   204000篇
  国内免费   6043篇
耳鼻咽喉   36195篇
儿科学   90527篇
妇产科学   75615篇
基础医学   387613篇
口腔科学   77737篇
临床医学   247838篇
内科学   536312篇
皮肤病学   62798篇
神经病学   217814篇
特种医学   103113篇
外国民族医学   696篇
外科学   411709篇
综合类   63982篇
现状与发展   7篇
一般理论   950篇
预防医学   209622篇
眼科学   64138篇
药学   197163篇
  7篇
中国医学   6595篇
肿瘤学   155478篇
  2019年   21943篇
  2018年   31495篇
  2017年   23865篇
  2016年   26557篇
  2015年   29934篇
  2014年   41999篇
  2013年   62307篇
  2012年   85421篇
  2011年   90547篇
  2010年   53405篇
  2009年   50313篇
  2008年   83749篇
  2007年   88900篇
  2006年   89761篇
  2005年   86388篇
  2004年   83111篇
  2003年   79210篇
  2002年   76367篇
  2001年   138678篇
  2000年   142182篇
  1999年   117716篇
  1998年   32339篇
  1997年   28530篇
  1996年   28608篇
  1995年   27370篇
  1994年   24980篇
  1993年   23253篇
  1992年   89746篇
  1991年   86130篇
  1990年   82884篇
  1989年   79567篇
  1988年   72829篇
  1987年   71164篇
  1986年   66672篇
  1985年   63487篇
  1984年   47416篇
  1983年   40116篇
  1982年   23387篇
  1981年   20813篇
  1979年   41841篇
  1978年   29113篇
  1977年   24485篇
  1976年   23049篇
  1975年   23965篇
  1974年   29014篇
  1973年   27994篇
  1972年   26071篇
  1971年   23915篇
  1970年   22543篇
  1969年   21025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.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
6.
Pharmaceutical Chemistry Journal - An HPLC-MS method for simultaneous quantitative determination of a novel gestagenic pharmaceutical and two of its metabolites in rat and rabbit blood sera was...  相似文献   
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