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   41822篇
  免费   2279篇
  国内免费   154篇
耳鼻咽喉   551篇
儿科学   2657篇
妇产科学   750篇
基础医学   5003篇
口腔科学   1198篇
临床医学   2955篇
内科学   7620篇
皮肤病学   1185篇
神经病学   2444篇
特种医学   1269篇
外科学   6280篇
综合类   1401篇
一般理论   19篇
预防医学   2169篇
眼科学   1419篇
药学   4140篇
中国医学   358篇
肿瘤学   2837篇
  2023年   299篇
  2022年   770篇
  2021年   1691篇
  2020年   932篇
  2019年   1034篇
  2018年   1458篇
  2017年   1059篇
  2016年   1392篇
  2015年   1408篇
  2014年   2046篇
  2013年   2317篇
  2012年   3299篇
  2011年   3192篇
  2010年   1905篇
  2009年   1503篇
  2008年   2177篇
  2007年   2196篇
  2006年   2008篇
  2005年   1801篇
  2004年   1643篇
  2003年   1387篇
  2002年   1205篇
  2001年   814篇
  2000年   749篇
  1999年   631篇
  1998年   282篇
  1997年   223篇
  1996年   234篇
  1995年   203篇
  1994年   171篇
  1993年   135篇
  1992年   372篇
  1991年   352篇
  1990年   385篇
  1989年   349篇
  1988年   313篇
  1987年   261篇
  1986年   250篇
  1985年   243篇
  1984年   192篇
  1983年   135篇
  1982年   75篇
  1981年   84篇
  1980年   75篇
  1979年   120篇
  1978年   78篇
  1977年   90篇
  1976年   74篇
  1973年   71篇
  1971年   67篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
Haemangioma of the maxillary sinus is rare. Clinical diagnosis is of utmost importance for its operative treatment and prevention of hazards. A case is reported for its rarity and some unusual features.  相似文献   
43.
44.
45.
BACKGROUND: Staphylococcus aureus-associated peritonitis and catheter exit-site infections (ESIs) are important causes of hospitalization and catheter loss in patients undergoing chronic peritoneal dialysis. Intranasal and topical use of mupirocin has been found to be an effective strategy in decreasing S. aureus-related infectious complications in persons who are carriers of S. aureus; however, there is no consensus regarding the prophylactic use of mupirocin irrespective of carrier status. We aimed to determine the potential effectiveness of application of mupirocin cream at the catheter exit site in preventing ESI and peritonitis irrespective of carrier status in a tropical country such as India. METHODS: This prospective historically controlled study was done in a total of 40 patients. From August 2003, all patients, incident and prevalent, were instructed to apply 2% mupirocin cream daily to the exit site instead of the older practice of povidone-iodine and gauze dressing. Patients were not screened to determine whether they were S. aureus carriers. The infection-related data for 1 year, until July 2004, were compared with the historical control, which was infection-related data for the year preceding the year of mupirocin application. RESULTS: Mean age of the study population was 62 years, with 61.8% being male and 64.3% being diabetic. Local application of mupirocin led to a significant reduction in the incidence density per patient-month of both ESI and peritonitis compared to controls (0.15 vs 0.37 and 0.37 vs 0.67, p = 0.01 for both). This amounted to a relative reduction of 60.5% and 55% respectively. ESI and peritonitis due to S. aureus were also significantly lower in the study group compared to controls (incidence density per patient-month 0.05 vs 0.13 and zero vs 0.17 respectively, p < 0.01 for both). There occurred no catheter removal due to infection-related complications during the study period compared to two during the control period. None of the patients reported a mupirocin-related adverse effect. CONCLUSIONS: Daily application of mupirocin at the exit site is a well-tolerated and effective strategy in reducing the incidence of ESI and peritonitis in a tropical country such as India. It can thus significantly reduce morbidity, catheter loss, and transfer to hemodialysis in peritoneal dialysis patients.  相似文献   
46.
47.
Reported herein is a case of obsessive–compulsive disorder with persistent and distressing musical obsessions along with other symptoms. Advanced source analysis of electroencephalographic data indicated high spectral power over the bifrontal region. The musical symptoms were resistant to pharmacotherapy but there was some reduction in frequency and duration of musical obsessions with thought-stopping technique.  相似文献   
48.
An ELISA technique has been developed to detect HBsAg in the sera of leprosy patients. Out of ninety-two serum samples taken from untreated leprosy patients, 10 samples were positive for HBsAg. The ELISA used in the present investigation is a low cost, reliable and sensitive marker of HBsAg. It is better than lesser sensitive (haemagglutination and counterimmunoelectrophoresis), costly and hazardous (radioimmunoassay) techniques and is therefore recommended for routine use.  相似文献   
49.
Over the past 10 years, arteriography has become a well-established technique for the diagnosis of acute lower gastrointestinal bleeding, but not particularly for rectal bleeding. However, to the authors' knowledge, the technique of middle hemorrhoidal artery embolization has rarely been reported in the literature. In the present report, three patients with life-threatening rectal bleeding are presented, which was controlled by superselective embolization of the middle hemorrhoidal artery or selective embolization of the internal iliac artery as a last resort.  相似文献   
50.
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