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   3497865篇
  免费   314640篇
  国内免费   14462篇
耳鼻咽喉   48871篇
儿科学   110586篇
妇产科学   88496篇
基础医学   551154篇
口腔科学   93867篇
临床医学   323590篇
内科学   625669篇
皮肤病学   93365篇
神经病学   303571篇
特种医学   140164篇
外国民族医学   299篇
外科学   549552篇
综合类   106126篇
现状与发展   92篇
一般理论   2266篇
预防医学   295532篇
眼科学   80514篇
药学   237994篇
  24篇
中国医学   9555篇
肿瘤学   165680篇
  2021年   56067篇
  2020年   37383篇
  2019年   58740篇
  2018年   74357篇
  2017年   57339篇
  2016年   63337篇
  2015年   77379篇
  2014年   114323篇
  2013年   179218篇
  2012年   94288篇
  2011年   94182篇
  2010年   120806篇
  2009年   126591篇
  2008年   81294篇
  2007年   83766篇
  2006年   95207篇
  2005年   89880篇
  2004年   91433篇
  2003年   82125篇
  2002年   71193篇
  2001年   112332篇
  2000年   105524篇
  1999年   103178篇
  1998年   67584篇
  1997年   64974篇
  1996年   62846篇
  1995年   58521篇
  1994年   52233篇
  1993年   48694篇
  1992年   73815篇
  1991年   70664篇
  1990年   66860篇
  1989年   65473篇
  1988年   60670篇
  1987年   59306篇
  1986年   56133篇
  1985年   56159篇
  1984年   50538篇
  1983年   45853篇
  1982年   42623篇
  1981年   40018篇
  1980年   37727篇
  1979年   41817篇
  1978年   36603篇
  1977年   33163篇
  1976年   30488篇
  1975年   29067篇
  1974年   30314篇
  1973年   29062篇
  1972年   27080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