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   4672933篇
  免费   364423篇
  国内免费   15296篇
耳鼻咽喉   65286篇
儿科学   150128篇
妇产科学   123098篇
基础医学   709316篇
口腔科学   128152篇
临床医学   428850篇
内科学   849265篇
皮肤病学   114308篇
神经病学   389593篇
特种医学   181256篇
外国民族医学   816篇
外科学   702567篇
综合类   130110篇
现状与发展   24篇
一般理论   2704篇
预防医学   386493篇
眼科学   110034篇
药学   331870篇
  27篇
中国医学   13284篇
肿瘤学   235471篇
  2021年   56679篇
  2019年   59200篇
  2018年   75483篇
  2017年   57921篇
  2016年   64094篇
  2015年   76828篇
  2014年   111112篇
  2013年   176684篇
  2012年   132750篇
  2011年   139356篇
  2010年   128916篇
  2009年   129408篇
  2008年   125134篇
  2007年   133847篇
  2006年   141826篇
  2005年   135690篇
  2004年   136872篇
  2003年   126776篇
  2002年   116024篇
  2001年   183616篇
  2000年   179449篇
  1999年   162578篇
  1998年   73796篇
  1997年   68981篇
  1996年   66967篇
  1995年   62355篇
  1994年   56300篇
  1993年   52179篇
  1992年   117802篇
  1991年   113065篇
  1990年   108887篇
  1989年   106311篇
  1988年   97731篇
  1987年   95658篇
  1986年   90045篇
  1985年   87779篇
  1984年   71996篇
  1983年   63687篇
  1982年   49355篇
  1981年   45740篇
  1980年   42903篇
  1979年   61759篇
  1978年   49116篇
  1977年   43569篇
  1976年   40385篇
  1975年   41093篇
  1974年   44929篇
  1973年   42811篇
  1972年   40136篇
  1971年   37152篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
83.
84.
85.
We review the spectrum of cutaneous disorders associated with inflammatory and neoplastic plasmacytic pathology. Because plasma cells are derived from B‐lymphocytes our overview includes discussion of certain lymphoplasmacytic proliferations. It is structured along histopathological lines, addressing conditions characterized by (a) cutaneous plasma cell infiltrates, (b) deposits of plasma cell products or their derivatives in the skin and (c) miscellaneous, poorly understood cutaneous complications of plasmacytic disorders. Lesions arising primarily in the skin and those due to cutaneous involvement by multisystem disorders are addressed. The range includes a spectrum of tumefactive and circulatory manifestations. We highlight key clinical and pathological features of the different conditions and outline recent advances in our understanding of these entities. By emphasizing the dermatopathological characteristics of this spectrum of disorders we hope to hone the diagnostic accuracy of practitioners in the field.  相似文献   
86.
87.
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   
88.
89.
90.
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