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   121415篇
  免费   47030篇
  国内免费   221篇
耳鼻咽喉   1936篇
儿科学   5749篇
妇产科学   1713篇
基础医学   21796篇
口腔科学   5696篇
临床医学   18603篇
内科学   32657篇
皮肤病学   8397篇
神经病学   17913篇
特种医学   3525篇
外国民族医学   5篇
外科学   19599篇
综合类   450篇
一般理论   57篇
预防医学   8859篇
眼科学   1803篇
药学   8477篇
中国医学   1075篇
肿瘤学   10356篇
  2023年   361篇
  2022年   615篇
  2021年   2435篇
  2020年   5703篇
  2019年   11799篇
  2018年   11323篇
  2017年   12296篇
  2016年   12959篇
  2015年   12919篇
  2014年   13265篇
  2013年   14559篇
  2012年   7447篇
  2011年   7471篇
  2010年   10711篇
  2009年   7017篇
  2008年   5054篇
  2007年   4035篇
  2006年   3959篇
  2005年   3717篇
  2004年   3584篇
  2003年   3469篇
  2002年   3527篇
  2001年   1199篇
  2000年   1055篇
  1999年   738篇
  1998年   637篇
  1997年   555篇
  1996年   441篇
  1995年   479篇
  1994年   399篇
  1993年   367篇
  1992年   269篇
  1991年   283篇
  1990年   252篇
  1989年   217篇
  1988年   213篇
  1987年   201篇
  1986年   204篇
  1985年   195篇
  1984年   212篇
  1983年   180篇
  1982年   242篇
  1981年   237篇
  1980年   192篇
  1979年   123篇
  1978年   135篇
  1977年   135篇
  1976年   124篇
  1975年   99篇
  1974年   96篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
13.
ABSTRACT

Close observation of the interactions between a traumatised mother and her infant son provides information on the modes of transmission of psychic trauma in the mother–infant dyad. Following the presentation of a current literature review on the theme, the subject of “radioactive residue” and counter-transference in the transmission of psychic trauma from mother to infant will be illustrated through a clinical case study that focuses on a Haitian mother and her two-year-old infant son who has been referred to a “transitional care nursery” in urban Paris. The encounter with this mother–infant dyad is analysed through observing the quality of the interactions that take place between the mother and infant in order to determine how a particularly traumatic narrative impacts the mother–infant relationship, in addition to relations with the clinician. Mother and infant respond to one another through the emission and reception of “radioactive residues” as hypothesized by Gampel. This clinical case study shows that there is a need to consider transcultural factors and collective experience and history when analysing traumatic events. Additionally, the case study shows that counter-transference can be an effective clinical tool for gaining access to an infant's experience as the recipient of a traumatic narrative.  相似文献   
14.
15.
16.

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   
17.
18.
19.
20.
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   
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