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   960368篇
  免费   92871篇
  国内免费   331篇
  2018年   9511篇
  2017年   9248篇
  2016年   13978篇
  2015年   19738篇
  2014年   22330篇
  2013年   29922篇
  2012年   32503篇
  2011年   31131篇
  2010年   21865篇
  2009年   20299篇
  2008年   26859篇
  2007年   27945篇
  2006年   26213篇
  2005年   30435篇
  2004年   29096篇
  2003年   26715篇
  2002年   24186篇
  2001年   39632篇
  2000年   38994篇
  1999年   31710篇
  1998年   11607篇
  1997年   11645篇
  1996年   10994篇
  1995年   10214篇
  1994年   9833篇
  1993年   9937篇
  1992年   26283篇
  1991年   25931篇
  1990年   25250篇
  1989年   24677篇
  1988年   22769篇
  1987年   21878篇
  1986年   20342篇
  1985年   20305篇
  1984年   16605篇
  1983年   14341篇
  1982年   10759篇
  1981年   9719篇
  1980年   9085篇
  1979年   15570篇
  1978年   12326篇
  1977年   11046篇
  1976年   10464篇
  1975年   11939篇
  1974年   12899篇
  1973年   12764篇
  1972年   11776篇
  1971年   10598篇
  1970年   9289篇
  1969年   9152篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
Argon laser surgery is an effective treatment for ectasias and congenital port-wine stains; however, its use in children under the age of 13 is controversial. This paper reviews 202 children under the age of 13 who underwent argon laser treatments for congenital port-wine stains, spider angiomas, epidermal nevi, and lentigines. The clinical characteristics of port-wine stains in 170 children are discussed. Good to excellent results (moderate to complete clearing) in port-wine stains were obtained in 60 percent of patients and seemed to correlate best with lack of blanchability on pressure. Hypertrophic scarring was seen in only 7 children, all of whom had undressed wounds; no significant scarring has been seen in any subsequent child who had maintained a dressed wound postoperatively.  相似文献   
82.
83.
84.
Reconstruction of bony structures of the face is always a problem as big as the defect and the function that must be replaced. Everything from simple grafts to sophisticated distant bone flaps has been used. Based on the studies of Cutting et al., Psillakis et al., and Casanova et al., we have developed the full-thickness galeoparietal bone flap, initially for mandibular reconstruction, but of great use for all maxillofacial reconstructions. From July of 1987 to December of 1988, 14 patients have been operated on. The experience with this flap is shown in four patients as follows: primary reconstruction of a mandible as a result of ameloblastoma, secondary reconstruction of a mandible with associated old fractures and malalignment of segments, bilateral malar reconstruction in a patient with Treacher Collins syndrome, and severe sequelae of an already treated Romberg case. Small variations could be made to best accommodate the technique used to the defect we were treating. Some technical details, the experience, the results, and possible sequelae or complications are also discussed.  相似文献   
85.
Trigger finger is a relatively common clinical entity, most frequently caused by stenosing tenosynovitis. Several other conditions not related to tenosynovitis also have been described as a cause of triggering, and these have been reviewed. We present a rare anomaly of the fourth lumbrical muscle insertion as a cause of triggering of the right little finger. This was completely relieved following excision of the anomalous muscle. This rare anatomic variant should be added to the list of potential causes of trigger finger.  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