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   117668篇
  免费   6141篇
  国内免费   139篇
耳鼻咽喉   1783篇
儿科学   5313篇
妇产科学   3959篇
基础医学   16282篇
口腔科学   2900篇
临床医学   8422篇
内科学   22337篇
皮肤病学   3373篇
神经病学   9261篇
特种医学   5076篇
外国民族医学   32篇
外科学   19290篇
综合类   1600篇
一般理论   29篇
预防医学   5881篇
眼科学   3418篇
药学   8200篇
中国医学   324篇
肿瘤学   6468篇
  2018年   928篇
  2017年   800篇
  2016年   1119篇
  2015年   1247篇
  2014年   1631篇
  2013年   2413篇
  2012年   3181篇
  2011年   3260篇
  2010年   2021篇
  2009年   1989篇
  2008年   3343篇
  2007年   3590篇
  2006年   3723篇
  2005年   3832篇
  2004年   3756篇
  2003年   3624篇
  2002年   3575篇
  2001年   7083篇
  2000年   7036篇
  1999年   5916篇
  1998年   1648篇
  1997年   1576篇
  1996年   1348篇
  1995年   1216篇
  1994年   1103篇
  1993年   1126篇
  1992年   3797篇
  1991年   3597篇
  1990年   3595篇
  1989年   3381篇
  1988年   3016篇
  1987年   2924篇
  1986年   2825篇
  1985年   2632篇
  1984年   1956篇
  1983年   1604篇
  1982年   929篇
  1981年   918篇
  1980年   770篇
  1979年   1826篇
  1978年   1352篇
  1977年   1116篇
  1976年   938篇
  1975年   1183篇
  1974年   1215篇
  1973年   1203篇
  1972年   1044篇
  1971年   981篇
  1970年   882篇
  1969年   788篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
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   
3.
4.
5.
6.
7.
8.
9.
Hillermann  T.  Homburg  K.  Rainer  M.  Budde  U. 《Der Anaesthesist》2022,71(4):299-302
Die Anaesthesiologie - Eine junge Patientin erleidet während der Anlage einer axillären Plexusblockade einen generalisierten Krampfanfall. Die Mechanismen, im Wesentlichen die vermutlich...  相似文献   
10.

Objective

Low psoas muscle area is shown to be an indicator for worse postoperative outcome in patients undergoing vascular surgical. Additionally, it has been associated with longer durations of hospital stay in patients with cancer who undergo surgery and subsequently greater health care costs in Europe and the United States. We sought to evaluate this effect on hospital expenditure for patients undergoing vascular repair in a health care system with universal access.

Methods

Skeletal muscle mass was assessed on preoperative abdominal computed tomography scans of patients undergoing open aortic aneurysm repair in a retrospective fashion. The skeletal muscle index (SMI) was used to define low muscle mass. Health care costs were obtained for all patients and the relationship between a low SMI and higher costs was explored using linear regression and cross-sectional analysis.

Results

We included 156 patients (81.5% male) with a median age of 72 years undergoing elective surgery for infrarenal abdominal aortic aneurysm in this analysis. The median SMI for patients with low skeletal muscle mass was 53.21 cm2/kg and for patients without, 70.07 cm2/kg. Hospital duration of stay was 2 days longer in patients with low skeletal muscle mass as compared with patients with normal (14 days vs 11 days; P = .001), as was duration of intensive care stay (3 days vs 1 day; P = .01). The median overall hospital costs were €10,460 higher for patients with a low SMI as compared with patients with a normal physical constitution (€53,739 [interquartile range, €45,007-€62,471] vs €43,279 [interquartile range, €39,509-€47,049]; P = .001). After confounder adjustment, a low SMI was associated with a 14.68% cost increase in overall hospital costs, for a cost increase of €6521.

Conclusions

Low skeletal muscle mass is independently associated with higher hospital as well as intensive care costs in patients undergoing elective aortic aneurysm repair. Strategies to reduce this risk factor are warranted for these patients.  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