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   486篇
  免费   42篇
  国内免费   2篇
儿科学   28篇
妇产科学   107篇
基础医学   30篇
口腔科学   1篇
临床医学   23篇
内科学   65篇
神经病学   32篇
特种医学   13篇
外科学   78篇
综合类   2篇
预防医学   39篇
眼科学   9篇
药学   39篇
肿瘤学   64篇
  2021年   11篇
  2020年   9篇
  2019年   14篇
  2018年   9篇
  2017年   11篇
  2016年   7篇
  2015年   13篇
  2014年   16篇
  2013年   14篇
  2012年   14篇
  2011年   36篇
  2010年   16篇
  2009年   13篇
  2008年   17篇
  2007年   31篇
  2006年   30篇
  2005年   26篇
  2004年   21篇
  2003年   12篇
  2002年   24篇
  2001年   17篇
  2000年   10篇
  1999年   13篇
  1998年   4篇
  1997年   6篇
  1996年   7篇
  1995年   6篇
  1994年   4篇
  1993年   3篇
  1992年   11篇
  1991年   9篇
  1990年   11篇
  1989年   13篇
  1988年   6篇
  1987年   9篇
  1986年   8篇
  1985年   9篇
  1984年   2篇
  1983年   8篇
  1982年   2篇
  1981年   2篇
  1978年   4篇
  1977年   4篇
  1944年   2篇
  1943年   1篇
  1941年   1篇
  1939年   5篇
  1937年   1篇
  1912年   1篇
  1911年   1篇
排序方式: 共有530条查询结果,搜索用时 15 毫秒
51.
OBJECTIVES: To describe the reliability and validity of the Postoperative Morbidity Survey (POMS). To describe the level and pattern of short-term postoperative morbidity after major elective surgery using the POMS. STUDY DESIGN AND SETTING: This was a prospective cohort study of 439 adults undergoing major elective surgery in a UK teaching hospital. The POMS, an 18-item survey that address nine domains of postoperative morbidity, was recorded on postoperative days 3, 5, 8, and 15. RESULTS: Inter-rater reliability was perfect for 11/18 items (Kappa=1.0), with Kappa=0.94 for 6/18 items. A priori hypotheses that the POMS would discriminate between patients with known measures of morbidity risk, and predict length of stay were generally supported through observation of data trends, and there was statistically significant evidence of construct validity for all but the wound and neurological domains. POMS-defined morbidity was present in 325 of 433 patients (75.1%) remaining in hospital on postoperative day 3 after surgery, 231 of 407 patients (56.8%) on day 5, 138 of 299 patients (46.2%) on day 8, and 70 of 111 patients (63.1%) on day 15. Gastrointestinal (47.4%), infectious (46.5%), pain-related (40.3%), pulmonary (39.4%), and renal problems (33.3%) were the most common forms of morbidity. CONCLUSION: The POMS is a reliable and valid survey of short-term postoperative morbidity in major elective surgery. Many patients remain in hospital without any morbidity as recorded by the POMS.  相似文献   
52.
As a substrate for human liver microsomes, ethoxyresorufin appears to be metabolised by a group of cytochrome P450 isoenzymes which are inducible by cigarette smoking. Kinetic studies in microsomes from four human livers indicate that only one enzyme component is involved over the full substrate range. Ethoxyresorufin O-deethylation activity at both high and low substrate concentrations correlated with the high affinity component of ethoxycoumarin O-deethylation and of diphenyloxazole metabolism.  相似文献   
53.
54.
55.
Baron  Cindy  Girling  Linda  Mathieson  Angela  Mutch  W. Alan 《Journal canadien d'anesthésie》2008,55(1):4723481-4723482
Canadian Journal of Anesthesia/Journal canadien d'anesthésie -  相似文献   
56.
57.
58.
Summary 1. The activities of the two kinetic components (high and low affinity) of the microsomal 0-deethylation of 7-ethoxycoumarin have been measured in liver from patients with alcoholic cirrhosis and in normals. 2. The activity (expressed as pmol 7-OH coumarin formed/mg microsomal protein/min) of both components of the enzyme was significantly lower in alcoholic cirrhosis (high affinity=3.27±1.18, low affinity 60.9±11.6) than in normals (high affinity 9.43±2.37, low affinity 111.3±9.2). 3. These results are further evidence that there is a broad impairment of hepatic microsomal mono-oxygenase activity in alcoholic cirrhosis.  相似文献   
59.
Two hundred and forty-nine patients with Parkinson's disease previously examined by Mutch et al 1,2 were followed up three and a half years after the original study. Cognitive impairment, age, some postural signs and symptoms of Parkinson's disease and high scores on the Hoehn and Yahr scale predicted premature death. Patients were more likely to die from respiratory infections than controls. Respiratory diseases as cause of death recorded on the death certificate were not related to kyphosis, posture scores or Hoehn and Yahr scores before death. The hypothesis is advanced that death of respiratory causes might be associated with signs of general autonomic dysregulation.  相似文献   
60.
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