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   275677篇
  免费   55752篇
  国内免费   1262篇
耳鼻咽喉   4057篇
儿科学   8381篇
妇产科学   5373篇
基础医学   44511篇
口腔科学   9074篇
临床医学   32471篇
内科学   60323篇
皮肤病学   12047篇
神经病学   29463篇
特种医学   12013篇
外国民族医学   4篇
外科学   40750篇
综合类   2938篇
现状与发展   5篇
一般理论   140篇
预防医学   18414篇
眼科学   6641篇
药学   21879篇
  2篇
中国医学   2456篇
肿瘤学   21749篇
  2023年   905篇
  2022年   2923篇
  2021年   6569篇
  2020年   7463篇
  2019年   14130篇
  2018年   14402篇
  2017年   14334篇
  2016年   15847篇
  2015年   17271篇
  2014年   18728篇
  2013年   21216篇
  2012年   18459篇
  2011年   18138篇
  2010年   16679篇
  2009年   12005篇
  2008年   13083篇
  2007年   12099篇
  2006年   11294篇
  2005年   10555篇
  2004年   9651篇
  2003年   8629篇
  2002年   7896篇
  2001年   6612篇
  2000年   6225篇
  1999年   4863篇
  1998年   1870篇
  1997年   1524篇
  1996年   1463篇
  1995年   1350篇
  1994年   1181篇
  1993年   1021篇
  1992年   2746篇
  1991年   2740篇
  1990年   2453篇
  1989年   2325篇
  1988年   2060篇
  1987年   2061篇
  1986年   1963篇
  1985年   1836篇
  1984年   1403篇
  1983年   1182篇
  1982年   798篇
  1981年   752篇
  1980年   714篇
  1979年   1217篇
  1978年   925篇
  1977年   831篇
  1976年   799篇
  1974年   872篇
  1973年   779篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
21.
22.
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia.  相似文献   
23.
24.

Background and objectives

A prompt and effective management of trauma patient is necessary. The aim of this case report is to highlight the importance of intraoperative echocardiography as a useful tool in patients suffering from refractory hemodynamic instability no otherwise explained.

Case report

A 41 year‐old woman suffered a car accident. At the emergency department, no abnormalities were found in ECG or chest X‐ray. Abdominal ultrasound revealed the presence of abdominal free liquid and the patient was submitted to urgent exploratory laparotomy. Nevertheless, she persisted suffering arterial hypotension and metabolic acidosis. Looking for the reason of her hemodynamic instability, intraoperative transthoracic echocardiography was performed, finding out the presence of pericardial effusion. Once the cardiac surgeon extracted pericardial clots, patient's situation improved clinically and analytically.

Conclusion

Every anesthesiologist should be able to use the intraoperative echocardiography as an effective tool in order to establish the appropriate measures to promote the survival of patients suffering severe trauma.  相似文献   
25.
26.
27.
28.
Direct peroral cholangioscopy (POC) using an ultra‐slim upper endoscope is one modality of POC for intraductal endoscopic evaluation and treatment of the bile duct. Choledochoduodenostomy (CDS) is one modality of biliary bypass surgery that provides a new route to the bile duct. We carried out direct POC using an ultra‐slim upper endoscope without the use of accessories in 10 patients (four sump syndromes, three bile duct strictures and three intrahepatic duct stones) previously undergoing surgical CDS. Direct POC was successful in all patients. The use of an intraductal balloon catheter was required in one patient for advancement of the endoscope into the bile duct. Distal bile ducts with sump syndromes were cleared using baskets and water irrigation under direct POC. Cholangiocarcinoma was diagnosed in one patient with hilar bile duct stricture after cholangioscopic evaluation and a targeting forceps biopsy under direct POC. Intrahepatic duct stones were successfully extracted after intraductal fragmentation under direct POC. Oozing bleeding occurred during intraductal lithotripsy but stopped spontaneously. Direct POC using an ultra‐slim upper endoscope without the assistance of accessories can easily be carried out in patients undergoing CDS.  相似文献   
29.
30.
Acne vulgaris (acne) is a chronic inflammatory disease of the sebaceous gland, characterized by follicular hyperkeratinization, excessive colonization by Propionibacterium acnes (Pacnes) as well as immune reactions and inflammation. Despite an armamentarium of topical treatments available including benzoyl peroxide, retinoids and azelaic acid, topical antibiotics in monotherapies, especially erythromycin and clindamycin, are still used in Europe to treat acne. This intensive use led to antimicrobial‐resistant P. acnes and staphylococci strains becoming one of the main health issues worldwide. This is an update on the current topical acne treatments available in Europe, their mechanism of action, their potential to induce antimicrobial resistance and their clinical efficacy and safety.  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