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   1658篇
  免费   111篇
  国内免费   2篇
耳鼻咽喉   23篇
儿科学   44篇
妇产科学   60篇
基础医学   241篇
口腔科学   9篇
临床医学   285篇
内科学   196篇
皮肤病学   53篇
神经病学   195篇
特种医学   19篇
外科学   202篇
综合类   14篇
一般理论   5篇
预防医学   247篇
眼科学   13篇
药学   71篇
肿瘤学   94篇
  2024年   5篇
  2023年   25篇
  2022年   34篇
  2021年   68篇
  2020年   49篇
  2019年   59篇
  2018年   65篇
  2017年   47篇
  2016年   44篇
  2015年   76篇
  2014年   75篇
  2013年   101篇
  2012年   139篇
  2011年   135篇
  2010年   66篇
  2009年   68篇
  2008年   107篇
  2007年   115篇
  2006年   92篇
  2005年   85篇
  2004年   88篇
  2003年   66篇
  2002年   61篇
  2001年   12篇
  2000年   6篇
  1999年   7篇
  1998年   6篇
  1997年   5篇
  1996年   4篇
  1995年   7篇
  1994年   4篇
  1993年   3篇
  1992年   5篇
  1991年   2篇
  1990年   3篇
  1987年   3篇
  1985年   2篇
  1983年   2篇
  1979年   2篇
  1975年   3篇
  1974年   3篇
  1973年   3篇
  1972年   1篇
  1971年   2篇
  1970年   3篇
  1969年   1篇
  1968年   2篇
  1966年   1篇
  1965年   2篇
  1962年   2篇
排序方式: 共有1771条查询结果,搜索用时 15 毫秒
981.
982.
International Urology and Nephrology - This study aimed to evaluate the efficacy and safety of Hyperbaric Oxygen Therapy (HBOT) use in hypospadias repair through systematic review and meta-analysis...  相似文献   
983.
International Urology and Nephrology - The learning curves for minimally invasive pyeloplasty techniques have been described in the past. However, the learning curve in achieving competency in open...  相似文献   
984.
Canadian Journal of Anesthesia/Journal canadien d'anesthésie - Dexmedetomidine is frequently used as a sedative agent for orthopedic surgery patients undergoing total hip or knee...  相似文献   
985.
986.
987.
Background When phenylketonuria (PKU) is not diagnosed and long‐term treatment commenced within the first few weeks of life, permanent brain damage will occur. There is some evidence to show that late diagnosed or untreated people with PKU who have severe challenging behaviours may benefit from a low phenylalanine diet [ Harper & Reid (1987) Journal of Mental Deficiency Research vol. 31, pp. 209–212; Hoskins et al. (1992) Journal of Intellectual Disability Research vol. 36, pp. 183–191; Baumeister & Baumeister (1998) Clinical Neuropharmacology vol. 21, pp. 18–27; Fitzgerald et al. (2000) Journal of Intellectual Disability Research vol. 44, pp. 53–59]. Method In the light of this evidence, a woman with late‐diagnosed PKU was treated with a low‐phenylalanine diet in an attempt to reduce her severe challenging behaviour. Results A reduction in challenging behaviours was observed when phenylalanine levels were maintained within a specific narrow range. Data are reported over a 2‐year period. A dramatic rise in severe challenging behaviour was noticed when her blood phenylalanine levels fell below a certain level. Conclusions This case report suggests that blood phenylalanine levels need to be maintained within a specific range for maximum benefit.  相似文献   
988.
BackgroundImpaired inhibitory control is considered a behavioural phenotype in patients with bulimia nervosa. However, the underlying neural correlates of impaired general and food-specific behavioural inhibition are largely unknown. Therefore, we investigated brain activation during the performance of behavioural inhibition to general and food-related stimuli in adults with bulimia nervosa.MethodsWomen with bulimia and healthy control women underwent event-related fMRI while performing a general and a food-specific no-go task.ResultsWe included 28 women with bulimia nervosa and 29 healthy control women in our study. On a neuronal level, we observed significant group differences in response to general no-go stimuli in women with bulimia nervosa with high symptom severity; compared with healthy controls, the patients showed reduced activation in the right sensorimotor area (postcentral gyrus, precentral gyrus) and right dorsal striatum (caudate nucleus, putamen).LimitationsThe present results are limited to adult women with bulimia nervosa. Furthermore, it remains unclear whether impaired behavioural inhibition in patients with this disorder are a cause or consequence of chronic illness.ConclusionOur findings suggest that diminished frontostriatal brain activation in patients with bulimia nervosa contribute to the severity of binge eating symptoms. Gaining further insight into the neural mechanisms of behavioural inhibition problems in individuals with this disorder may inform brain-directed treatment approaches and the development of response inhibition training approaches to improve inhibitory control in patients with bulimia nervosa. The present study does not support greater behavioural and neural impairments to food-specific behavioural inhibition in these patients.  相似文献   
989.
990.
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