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   13867篇
  免费   1420篇
  国内免费   33篇
耳鼻咽喉   170篇
儿科学   302篇
妇产科学   340篇
基础医学   1869篇
口腔科学   433篇
临床医学   2051篇
内科学   2389篇
皮肤病学   233篇
神经病学   1214篇
特种医学   465篇
外国民族医学   3篇
外科学   2013篇
综合类   333篇
一般理论   10篇
预防医学   1249篇
眼科学   216篇
药学   1130篇
中国医学   12篇
肿瘤学   888篇
  2021年   189篇
  2020年   119篇
  2019年   215篇
  2018年   240篇
  2017年   185篇
  2016年   191篇
  2015年   221篇
  2014年   299篇
  2013年   449篇
  2012年   618篇
  2011年   640篇
  2010年   372篇
  2009年   372篇
  2008年   588篇
  2007年   651篇
  2006年   645篇
  2005年   588篇
  2004年   578篇
  2003年   550篇
  2002年   564篇
  2001年   483篇
  2000年   502篇
  1999年   437篇
  1998年   168篇
  1997年   131篇
  1996年   152篇
  1995年   150篇
  1994年   152篇
  1993年   124篇
  1992年   297篇
  1991年   300篇
  1990年   291篇
  1989年   256篇
  1988年   265篇
  1987年   245篇
  1986年   254篇
  1985年   254篇
  1984年   188篇
  1983年   159篇
  1981年   115篇
  1980年   97篇
  1979年   177篇
  1978年   113篇
  1977年   113篇
  1976年   105篇
  1974年   109篇
  1973年   108篇
  1972年   110篇
  1971年   98篇
  1968年   113篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
The 8th Conference of the British Psychosocial Oncology Group was held in London on 9–10 December 1991 and attracted over 120 participants. The conference was extended from its usual one day format to one and a half days, to allow more time for both a formal and informal exchange of ideas. Eight invited speakers participated, but proferred papers and posters remained an important focus of the meeting. This is the largest annual conference in Britain for professionals working in psychosocial oncology and an important forum for the presentation of research. As in previous years, the conference attracted a number of newcomers, indicating the continued expansion of this field of research. A number of topical issues were presented in keynote papers by invited speakers. New work in cancer prevention and the associated areas of counselling families at risk and ethical issues, formed one symposium. Communication skills and relevant training needs in paediatric and adult oncology were an important theme of the conference and intervention studies formed the third main topic.  相似文献   
53.
A case of emphysematous cholecystitis with gall-bladder perforation, resulting in free intraperitoneal gas, is presented. It adds to only nine previous reports. A successful outcome was achieved by early surgery, combined with appropriate antibiotic therapy.  相似文献   
54.
55.
Summary Prosthetic materials, such as metals, marlex mesh and methyl methacrylate have been used for stabilization of the chest wall after resection of large areas of rib cage. Such materials are contraindicated in an infected area. A new method of providing a stable chest wall using autogenous tissue is presented.  相似文献   
56.
57.
We have retrospectively assessed the computed tomography (CT) findings in 92 patients suffering severe blunt abdominal trauma. Surgical findings and clinical follow-up were correlated with the CT findings. In nine patients CT was first used after emergency surgery and provided baseline data which was useful for further management. In two patients CT did not demonstrate small hepatic lacerations seen during previous surgery. No deaths were recorded. In 16 patients surgery followed CT within 24 h; there was good correlation between the CT and operative findings in 10 patients. However, CT failed to detect significant solid organ injury in five patients and was misleading (false positive) in another patient. There were two deaths amongst these 16 patients. Sixty-seven haemodynamically stable patients were initially managed non-operatively. Fifteen of these 67 patients had normal CT examinations; only one had subsequent laparotomy (for reasons unconnected with the trauma) where no injury was detected; there were no deaths. Of the 52 patients with an abnormal CT examination, 43 were successfully managed non-operatively. There were three deaths, including one where an injury missed at CT contributed to the demise of the patient. After an initial trial of non-operative management, the remaining six patients went to surgery where there was good concordance with the CT findings except for one missed renal injury. Active non-operative management of blunt abdominal trauma is widely accepted in haemodynamically stable patients and this report shows how CT supports this policy of surgical restraint in such cases. However, on review CT missed 13 injuries in nine patients overall; stricter attention to technique and better equipment may lead to improved results in the future.  相似文献   
58.
59.
60.
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