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   10001篇
  免费   45篇
  国内免费   13篇
耳鼻咽喉   282篇
儿科学   69篇
妇产科学   160篇
基础医学   1247篇
口腔科学   302篇
临床医学   1765篇
内科学   1098篇
皮肤病学   40篇
神经病学   123篇
特种医学   560篇
外科学   2255篇
综合类   20篇
预防医学   768篇
眼科学   186篇
药学   438篇
中国医学   4篇
肿瘤学   742篇
  2016年   18篇
  2015年   20篇
  2013年   19篇
  2012年   344篇
  2011年   691篇
  2010年   345篇
  2009年   34篇
  2008年   496篇
  2007年   709篇
  2006年   726篇
  2005年   713篇
  2004年   838篇
  2003年   827篇
  2002年   891篇
  2001年   565篇
  2000年   759篇
  1999年   401篇
  1998年   134篇
  1997年   37篇
  1996年   21篇
  1995年   23篇
  1994年   18篇
  1993年   30篇
  1992年   64篇
  1991年   77篇
  1990年   92篇
  1989年   84篇
  1988年   78篇
  1987年   95篇
  1986年   81篇
  1985年   72篇
  1984年   57篇
  1983年   38篇
  1981年   20篇
  1980年   19篇
  1979年   61篇
  1978年   33篇
  1977年   23篇
  1976年   36篇
  1975年   45篇
  1974年   46篇
  1973年   39篇
  1972年   43篇
  1971年   54篇
  1970年   43篇
  1969年   32篇
  1968年   31篇
  1967年   30篇
  1966年   23篇
  1965年   16篇
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
1.
2.
3.
The authors developed a method of sanative fibrobronchoscopy with the use of directed high-frequency stream ventilation with oxygen. A total of 108 procedures were conducted in 64 patients for removal of pulmonary complications after operations on the thoracic organs. The positive results of the method were confirmed by authentic improvement of the indices of external respiration function and increase of blood pO2 by 102% on the average. No improvement of similar indices was encountered in patients of the control group, while the blood pO2 reduced by 13.4% on the average. It is concluded that the method is very effective and safe, as compared to the traditional method of sanative fibrobronchoscopy in patients after interventions on the thoracic organs.  相似文献   
4.
5.
On the basis of analysis of surgical treatment of 753 patients with coxarthrosis during 1970-1987, the authors set forth the stages of arthroplasty development in the USSR, using the experience of the Kharkov research institute of orthopaedics and traumatology named after M. I. Sitenko on the problems of arthrodesis operations, endoprosthetics and biological arthroplasty. In the article are presented the peculiar features of diagnostic and surgical tactics in case of patients with idiopathic and dysplastic coxarthrosis; operation technique for each form is presented in details. The authors have developed a new perosseous access to the hip joint, which made a good showing and permits to preserve the integrity of periarticular muscles and neurovascular formations. Application of the given access made possible the extension of indications for arthroplasty in case of grave forms of coxarthrosis, met earlier in a reserved manner.  相似文献   
6.
7.
Water-electrolyte homeostasis and its basic regulatory hormones have been studied in 36 patients with neurosurgical brain pathology during surgical interventions performed under balanced anesthesia (sodium hydroxybutyrate combined with NLA drugs). The study has revealed 3 types of reactions in hormones regulating water-electrolyte homeostasis: type I--a decrease in vasopressin (VP) concentration and renin-angiotensin-aldosterone system (RAAS) activity; type II--VP increase and RAAS activation; type III--an increase in VP content and RAAS disbalance. It has been shown that type I reaction is accompanied by marked osmotic disturbances. The impact of sodium hydroxybutyrate on RAAS is manifested in aldosterone secretion suppression.  相似文献   
8.
Studies conducted in the clinic (in patients with cardiac diseases) and experiments (performed on intact dogs) by means of the hemiluminescent method and the nitroblue tetrazolium test showed that the lungs, in distinction to other organs (heart and others), have a stimulating effect on the generation of active oxygen forms (AOF) by the leukocytes. In this way the lungs may probably play a double role in the organism: potentiate its defence (by intensifying the microbicidal activity of the phagocytes) and facilitate damage (by secretion of AOF by the phagocytes beyond them--into the tissues); the resultant effect depends on the balance of these two types of action. In carcinoma of the lung the stimulating effect of its involved lobe (part) on the leukocytes diminishes.  相似文献   
9.
Water receptivity test after McClure-Aldrich was used to assess edema of the mammary gland affected by edematous-infiltrative carcinoma. Fifty-five patients with said pathology as well as 20 nodular carcinoma and 22 mastopathy patients in control were examined. Patients failing to respond to a combination of polychemo- hormono-therapy and irradiation showed the following pattern of test parameters: initial time of resolution of a blister produced by intradermal physiologic salt solution injection ranged 3-10 minutes. After treatment, it increased by less than 5 minutes or even decreased. An 81.8 +/- 8.2% remission rate was seen in patients in whom the said indexes were 11-50 minutes and a less than 5 minute increase, respectively. High predictive value of the test was confirmed mathematically.  相似文献   
10.
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