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   2186180篇
  免费   157434篇
  国内免费   4728篇
耳鼻咽喉   28521篇
儿科学   71836篇
妇产科学   58781篇
基础医学   317660篇
口腔科学   63596篇
临床医学   196976篇
内科学   423927篇
皮肤病学   49639篇
神经病学   166208篇
特种医学   81691篇
外国民族医学   316篇
外科学   329132篇
综合类   49815篇
现状与发展   5篇
一般理论   663篇
预防医学   161892篇
眼科学   52197篇
药学   161206篇
  9篇
中国医学   6147篇
肿瘤学   128125篇
  2021年   16601篇
  2019年   17278篇
  2018年   25128篇
  2017年   19235篇
  2016年   21120篇
  2015年   23903篇
  2014年   33071篇
  2013年   48550篇
  2012年   66700篇
  2011年   70284篇
  2010年   41658篇
  2009年   38990篇
  2008年   65230篇
  2007年   69582篇
  2006年   70059篇
  2005年   66828篇
  2004年   64563篇
  2003年   61406篇
  2002年   59112篇
  2001年   114091篇
  2000年   116241篇
  1999年   95949篇
  1998年   25121篇
  1997年   21786篇
  1996年   22002篇
  1995年   21227篇
  1994年   19480篇
  1993年   17942篇
  1992年   72513篇
  1991年   70732篇
  1990年   68069篇
  1989年   65780篇
  1988年   59963篇
  1987年   58325篇
  1986年   55193篇
  1985年   52089篇
  1984年   38376篇
  1983年   32609篇
  1982年   18243篇
  1979年   34001篇
  1978年   23683篇
  1977年   20062篇
  1976年   18891篇
  1975年   20100篇
  1974年   24082篇
  1973年   23198篇
  1972年   21700篇
  1971年   20041篇
  1970年   18840篇
  1969年   17527篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
941.
Traumatology of the alar ligaments   总被引:2,自引:0,他引:2  
A postmortem study of craniocerebral traumas of varying severity was done to determine the pattern of injury of the alar ligaments. It was found that in the entire group of patients (n = 30) the alar ligaments were ruptured or suffused with blood 11 times. No close relationship was found between the massive nature of the cranial trauma and the severity of the injury of the alar ligaments. In some cases the alar ligaments were not at all involved even though the skull had suffered extensive osseous lesions, whereas on the other hand the ligaments were injured even though only soft parts had been involved (e.g., haematoma or dehiscent wounds of the scalp). Ruptures of the alar ligaments were typically involved in extended ruptures of the ligamentous apparatus (see Figure 6a involving the ligamentum apicis dentis, ligamentum transversum atlantis, m.atlanto-occipitalis anterior, m.tectoria, m.atlanto-axialis anterior et posterior). In some cases the pattern of injury of the alar ligaments was found to be decisive in enabling reconstruction of the course of the accident. Damage to the alar ligaments near the dens axis represent rotation injuries. On the other hand, insertion tears out of the condyli occipitales must be related to a lateral thrust tendency in indirect fracture of the skull (bursting fracture). Within this overall framework a new mechanism of fracture of the condylus occipitalis is described. As a matter of principle, the alar ligaments can become involved in consequence of rotation, traction and compression of the cranium.  相似文献   
942.
943.
944.
945.
Two hundred and thirty pregnancies were studied in 196 diabetic women. Seven women with babies found to have major malformations had a higher median first trimester haemoglobin A1 (12.9%) than the median HbA1 (10.8%) in those with normal babies (p = 0.06). No relationship was found between the occurrence of minor malformations and first trimester maternal haemoglobin A1. Two of the seven congenital malformations were diagnosed antenatally at a time when therapeutic abortion could be offered. Expert antenatal ultrasound scanning should be offered to all pregnant diabetic women as poor glycaemic control at the time of conception and organogenesis, as evidenced by raised first trimester HbA1, predisposes to congenital malformation.  相似文献   
946.
Lymphangitis carcinomatosis has a grave prognosis. We report a case from carcinoma of the breast that responded completely and durably to chemotherapy.  相似文献   
947.
Self-mutilation and self-blame in incest victims   总被引:1,自引:0,他引:1  
A case is made for self-blame as the psychic link between children's experiences of incestuous sexual abuse and their self-mutilating behavior later in life. Representative case histories and the results of a small pilot study are presented to illustrate the author's theoretical formulation.  相似文献   
948.
949.
Various cases are presented demonstrating the role of computed tomography (CT) in the assessment of serosal and bowel wall pathology. Reference is made to the morphology of the lesions. Illustrative examples of tumors, secondary malignant dissemination, irradiation injury to the gut, and intramural gas associated with ulcerative colitis, are all illustrated.  相似文献   
950.
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