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   4321402篇
  免费   346602篇
  国内免费   17407篇
耳鼻咽喉   58906篇
儿科学   138772篇
妇产科学   115336篇
基础医学   664122篇
口腔科学   118037篇
临床医学   398929篇
内科学   782342篇
皮肤病学   106367篇
神经病学   365576篇
特种医学   166454篇
外国民族医学   816篇
外科学   646207篇
综合类   127805篇
现状与发展   24篇
一般理论   2593篇
预防医学   369144篇
眼科学   99564篇
药学   299988篇
  27篇
中国医学   12551篇
肿瘤学   211851篇
  2021年   57321篇
  2020年   36314篇
  2019年   59655篇
  2018年   75444篇
  2017年   57638篇
  2016年   63724篇
  2015年   76945篇
  2014年   111775篇
  2013年   177872篇
  2012年   127345篇
  2011年   132558篇
  2010年   127530篇
  2009年   128753篇
  2008年   117219篇
  2007年   124168篇
  2006年   132775篇
  2005年   127447篇
  2004年   127502篇
  2003年   117003篇
  2002年   105830篇
  2001年   155069篇
  2000年   150517篇
  1999年   138920篇
  1998年   71375篇
  1997年   67767篇
  1996年   65545篇
  1995年   61051篇
  1994年   55016篇
  1993年   51126篇
  1992年   100218篇
  1991年   96007篇
  1990年   91806篇
  1989年   88908篇
  1988年   82320篇
  1987年   80417篇
  1986年   76137篇
  1985年   74766篇
  1984年   63670篇
  1983年   56844篇
  1982年   47145篇
  1981年   43887篇
  1980年   41202篇
  1979年   54508篇
  1978年   44762篇
  1977年   39563篇
  1976年   37010篇
  1975年   36016篇
  1974年   39615篇
  1973年   38442篇
  1972年   35850篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
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   
83.
84.
85.
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   
86.
87.
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