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   25738篇
  免费   1297篇
  国内免费   66篇
耳鼻咽喉   363篇
儿科学   2027篇
妇产科学   612篇
基础医学   2948篇
口腔科学   453篇
临床医学   1402篇
内科学   4763篇
皮肤病学   986篇
神经病学   1134篇
特种医学   951篇
外科学   3860篇
综合类   915篇
一般理论   10篇
预防医学   1263篇
眼科学   1312篇
药学   2109篇
中国医学   140篇
肿瘤学   1853篇
  2023年   148篇
  2022年   377篇
  2021年   726篇
  2020年   405篇
  2019年   472篇
  2018年   681篇
  2017年   449篇
  2016年   655篇
  2015年   578篇
  2014年   906篇
  2013年   1076篇
  2012年   1517篇
  2011年   1615篇
  2010年   876篇
  2009年   705篇
  2008年   1228篇
  2007年   1302篇
  2006年   1120篇
  2005年   1060篇
  2004年   955篇
  2003年   885篇
  2002年   798篇
  2001年   723篇
  2000年   683篇
  1999年   596篇
  1998年   244篇
  1997年   179篇
  1996年   144篇
  1995年   136篇
  1994年   114篇
  1993年   130篇
  1992年   356篇
  1991年   390篇
  1990年   342篇
  1989年   358篇
  1988年   308篇
  1987年   277篇
  1986年   268篇
  1985年   279篇
  1984年   219篇
  1983年   181篇
  1979年   241篇
  1978年   158篇
  1977年   148篇
  1976年   135篇
  1975年   163篇
  1974年   154篇
  1973年   176篇
  1972年   138篇
  1971年   122篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
Brain stem audiory evoked response (BAER) audiometry is a non-invasive and objective measure of a subject’s auditory function. The present paper attempts to establish normative data in Indian subjects. It was found that the BAER can detect asymptomatic high frequency hearing losses. Wave V’s threshold, latency and amplitude, along with comparisons between the auditory (subjective) and BAER threshold, are useful parameters in testing for organic and non-organic hearing disorders.  相似文献   
972.
Occurrence of extraskeletal chondroma in tongue is very unusual. About 20 cases have been reported, till now. Rarity of the lesion is the basis of this report.  相似文献   
973.
The present study included 150 newborns; 100 clinically septic and 50 clinically aseptic who served as control. Out of 100 clinically septic newborns, blood culture was positive in 33 (33%), serum CRP was positive in 64 (64%) and acridine orange stained buffy coat smear was positive in 76 (76%). Serum CRP was found to be the most specific (specificity 96%) and acridine orange stained buffy coat smear examination the most sensitive (sensitivity 94.3%) test for diagnosis of neonatal septicemia.  相似文献   
974.
975.
AIM: To explore the contribution patients can make to medical education from both theoretical and empirical perspectives, to describe a framework for reviewing and monitoring patient involvement in specific educational situations and to generate suggestions for further research. METHODS: Literature review. RESULTS: Direct contact with patients can be seen to play a crucial role in the development of clinical reasoning, communication skills, professional attitudes and empathy. It also motivates through promoting relevance and providing context. Few studies have explored this area, including effects on the patients themselves, although there are examples of good practice in promoting more active participation. CONCLUSION: The Cambridge framework is a tool for evaluating the involvement of patients in the educational process, which could be used by curriculum planners and teachers to review and monitor the extent to which patients are actively involved. Areas for further research include looking at the 'added value' of using real, as opposed to simulated, patients; more work on outcomes for patients (other than satisfaction); the role of real patients in assessment; and the strengths and weaknesses of different models of patient involvement.  相似文献   
976.
One of the main goals of a radiology department is to optimize patient throughput. We have observed a number of factors that reduce patient throughput, one of them being suboptimal system usage. In this article, we distinguish and discuss two ways to reduce suboptimal operation: improved design of the user-interface and active support for learning during system usage, i.e., during examinations. We outline the rationale for this by looking at the current situation and trends in radiology departments. We have based our work firmly on the principles of user-centered design. Observations, task modeling, user involvement, and prototyping have been undertaken.  相似文献   
977.
978.
Three patients who developed a post-cricoid carcinoma 5-21 years after radiotherapy for carcinoma of the larynx are presented. These patients received radiotherapy when they were young. It is suggested that alternative forms of treatment, especially partial laryngectomy with the aid of a laser should be considered in the primary management of small tumours of the larynx of young patients.  相似文献   
979.
980.
Seven hundred and forty nine apparently healthy school children aged 5-15 years were investigated for throat infection with Group A streptococci (GAS) during December 1990 to May 1991. The prevalence of beta hemolytic streptococci (BHS) was 18.8%; most organisms belonged to Group A streptococci (13.7%). The prevalence of BHS in throat was significantly higher (p < .001) in girls as compared to boys. Immune response to extracellular antigens was studied in 53 children who had GAS strain in their throat, 54.7% had elevated titers of antistreptolysin O or antideoxyribonuclease B or both indicating subclinical infection with GAS. Thus it is recommended that serological examinations should be done along with throat culture to identify subclinical Group A streptococcal throat infection.  相似文献   
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