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   3581647篇
  免费   263009篇
  国内免费   8724篇
耳鼻咽喉   48910篇
儿科学   118600篇
妇产科学   99813篇
基础医学   503511篇
口腔科学   102170篇
临床医学   325158篇
内科学   697102篇
皮肤病学   82633篇
神经病学   293743篇
特种医学   139399篇
外国民族医学   1129篇
外科学   536005篇
综合类   79308篇
现状与发展   6篇
一般理论   1399篇
预防医学   278659篇
眼科学   81773篇
药学   265095篇
  10篇
中国医学   6969篇
肿瘤学   191988篇
  2018年   37607篇
  2017年   29140篇
  2016年   33504篇
  2015年   38109篇
  2014年   52422篇
  2013年   79477篇
  2012年   105698篇
  2011年   111677篇
  2010年   67172篇
  2009年   64378篇
  2008年   105107篇
  2007年   111416篇
  2006年   113271篇
  2005年   109091篇
  2004年   105932篇
  2003年   101996篇
  2002年   98876篇
  2001年   167386篇
  2000年   172022篇
  1999年   145570篇
  1998年   42010篇
  1997年   37546篇
  1996年   37573篇
  1995年   36488篇
  1994年   33780篇
  1993年   31730篇
  1992年   116017篇
  1991年   112593篇
  1990年   109330篇
  1989年   105899篇
  1988年   97666篇
  1987年   95943篇
  1986年   90738篇
  1985年   86987篇
  1984年   65123篇
  1983年   55662篇
  1982年   32969篇
  1981年   29628篇
  1979年   59676篇
  1978年   41850篇
  1977年   35549篇
  1976年   33155篇
  1975年   35351篇
  1974年   42330篇
  1973年   40374篇
  1972年   37730篇
  1971年   35250篇
  1970年   32470篇
  1969年   31062篇
  1968年   28389篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
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   
4.
5.
6.
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia.  相似文献   
7.
8.
9.
10.
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   
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