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   12685篇
  免费   1374篇
  国内免费   38篇
耳鼻咽喉   148篇
儿科学   302篇
妇产科学   305篇
基础医学   1729篇
口腔科学   410篇
临床医学   1829篇
内科学   2091篇
皮肤病学   223篇
神经病学   1082篇
特种医学   550篇
外国民族医学   3篇
外科学   1835篇
综合类   314篇
一般理论   9篇
预防医学   1150篇
眼科学   212篇
药学   1049篇
中国医学   10篇
肿瘤学   846篇
  2021年   132篇
  2019年   146篇
  2018年   187篇
  2017年   154篇
  2016年   157篇
  2015年   176篇
  2014年   238篇
  2013年   380篇
  2012年   496篇
  2011年   528篇
  2010年   308篇
  2009年   327篇
  2008年   499篇
  2007年   573篇
  2006年   556篇
  2005年   504篇
  2004年   496篇
  2003年   467篇
  2002年   517篇
  2001年   481篇
  2000年   496篇
  1999年   428篇
  1998年   167篇
  1997年   150篇
  1996年   166篇
  1995年   162篇
  1994年   167篇
  1993年   134篇
  1992年   298篇
  1991年   304篇
  1990年   292篇
  1989年   275篇
  1988年   278篇
  1987年   254篇
  1986年   273篇
  1985年   264篇
  1984年   201篇
  1983年   160篇
  1982年   103篇
  1981年   121篇
  1980年   101篇
  1979年   179篇
  1978年   118篇
  1977年   121篇
  1976年   110篇
  1974年   108篇
  1973年   108篇
  1972年   109篇
  1971年   99篇
  1968年   112篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
91.
92.
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   
93.
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   
94.
95.
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   
96.
97.
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   
98.
99.
100.
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