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   41410篇
  免费   2237篇
  国内免费   143篇
耳鼻咽喉   606篇
儿科学   2657篇
妇产科学   746篇
基础医学   4929篇
口腔科学   1154篇
临床医学   2953篇
内科学   7574篇
皮肤病学   1156篇
神经病学   2417篇
特种医学   1218篇
外科学   6167篇
综合类   1303篇
一般理论   18篇
预防医学   2101篇
眼科学   1493篇
药学   4110篇
  1篇
中国医学   351篇
肿瘤学   2836篇
  2023年   331篇
  2022年   982篇
  2021年   1658篇
  2020年   902篇
  2019年   993篇
  2018年   1412篇
  2017年   1032篇
  2016年   1361篇
  2015年   1376篇
  2014年   2020篇
  2013年   2295篇
  2012年   3216篇
  2011年   3142篇
  2010年   1879篇
  2009年   1477篇
  2008年   2139篇
  2007年   2142篇
  2006年   1994篇
  2005年   1762篇
  2004年   1633篇
  2003年   1401篇
  2002年   1196篇
  2001年   821篇
  2000年   757篇
  1999年   628篇
  1998年   286篇
  1997年   234篇
  1996年   226篇
  1995年   196篇
  1994年   160篇
  1993年   140篇
  1992年   383篇
  1991年   357篇
  1990年   371篇
  1989年   346篇
  1988年   299篇
  1987年   267篇
  1986年   255篇
  1985年   247篇
  1984年   181篇
  1983年   135篇
  1982年   71篇
  1981年   79篇
  1980年   77篇
  1979年   119篇
  1978年   79篇
  1977年   90篇
  1976年   71篇
  1973年   69篇
  1971年   62篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
41.
42.
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   
43.
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   
44.
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   
45.
46.
47.
48.
Awareness among the general population of the risk factors and warning symptoms of stroke is essential for preventative purposes and for immediate effective treatment. The aim of the present study was to assess the awareness, among the general population and stroke survivors, of the risk factors and warning symptoms of stroke, to develop an educational strategy for its prevention and immediate effective treatment. Six hundred and sixty stroke patients (370 male, 290 female) and 4000 people from the general population who accompanied the patients (2800 male, 1200 female) were interviewed, using three sets of questionnaires, on the risk factors and warning symptoms of stroke. Poor knowledge or awareness of the risk factors and warning symptoms of stroke was found in both groups. Both groups suggested educational programs for stroke using printed information, audiovisual programs and community survey programs using simple and understandable information for the prevention and immediate effective treatment of stroke. Poor awareness of stroke contributes to a delay in the arrival of patients in hospital emergency departments for immediate effective treatment. Multifaceted programs regarding stroke, including printed information, audiovisual programs and stroke service programs, are advocated by both patients and the general population to improve stoke treatment and prevention.  相似文献   
49.
OBJECTIVES: We analyzed the methods and outcomes of urethroplasty in men with complex urethral disruptions. METHODS: The medical records of 40 men with complex urethral disruptions were analyzed. Surgical methods were individualized according to stricture location, severity and length of the stricture, bladder neck characteristics and presence of complicating factors. Patients were divided into four groups based on the above characteristics. RESULTS: End-to-end urethroplasty performed in six patients with short bulbar strictures (<3 cm) was successful in all. Elaborated perineal repair was performed in 10 patients with intermediate (3-6 cm) strictures with or without complicating factors. Elaborated perineal repair with urethral substitution was performed in nine patients with long segment stricture (>6 cm). Abdominal transpubic repair was successfully applied to patients with rectourethral fistula or lacerated bladder neck. Success rate of anastomotic urethroplasty was 95% while over all success rate was 85%. CONCLUSION: Guidelines for urethral reconstruction of complex urethral disruptions are predicated on stricture length, location, bladder neck characteristics and associated complicating factors. End-to-end urethroplasty with stricture excision is highly reliable for short strictures for which previous operative repair have failed. Elaborated perineal repair is extremely versatile for intermediate and longer strictures with associated complicating factors. Abdominal transpubic urethroplasty is effective for patients with rectourethral fistula or lacerated bladder neck.  相似文献   
50.
    
We present our comments on the above article.  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