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   8768篇
  免费   204篇
  国内免费   6篇
耳鼻咽喉   78篇
儿科学   353篇
妇产科学   2302篇
基础医学   860篇
口腔科学   437篇
临床医学   880篇
内科学   884篇
皮肤病学   154篇
神经病学   432篇
特种医学   423篇
外科学   831篇
综合类   83篇
一般理论   2篇
预防医学   719篇
眼科学   191篇
药学   204篇
中国医学   47篇
肿瘤学   98篇
  2018年   51篇
  2017年   78篇
  2015年   54篇
  2014年   77篇
  2013年   261篇
  2012年   54篇
  2011年   113篇
  2010年   132篇
  2009年   284篇
  2008年   170篇
  2007年   113篇
  2006年   141篇
  2005年   127篇
  2004年   126篇
  2003年   100篇
  2002年   72篇
  2001年   97篇
  2000年   88篇
  1999年   313篇
  1998年   291篇
  1997年   345篇
  1996年   373篇
  1995年   315篇
  1994年   277篇
  1993年   201篇
  1992年   216篇
  1991年   236篇
  1990年   168篇
  1989年   164篇
  1988年   165篇
  1987年   136篇
  1986年   177篇
  1985年   135篇
  1984年   122篇
  1983年   164篇
  1982年   116篇
  1981年   99篇
  1980年   122篇
  1979年   113篇
  1978年   79篇
  1977年   108篇
  1976年   120篇
  1975年   116篇
  1974年   90篇
  1973年   88篇
  1972年   62篇
  1971年   57篇
  1970年   68篇
  1961年   56篇
  1922年   60篇
排序方式: 共有8978条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
5.
Socioeconomic determinants of health related quality of life in childhood and adolescence: results from a European study . von Rueden , U. , Gosch , A. , Rajmil , L. , Bisegger , C. , Ravens-Sieberer , U. , the European KIDSCREEN group ( 2006 ) Journal of Epidemiology and Community Health , 60 , 130 – 135 .  相似文献   
6.
7.
Anorectal function in the solitary rectal ulcer syndrome   总被引:8,自引:6,他引:2  
The anorectal function of nine patients with solitary rectal ulcer syndrome (SRUS) (5 F: 4 M, median age, 27 (range, 19–41 years) and nine control subjects (5 F: 4 M, median age, 47 (35–66)P<0.01) has been investigated by a new technique that radiologically visualizes the anorectum during voiding of a semisolid contrast medium, while simultaneously measuring intrarectal pressure and anal sphincter EMG activity. A degree of rectal prolapse was demonstrated in eight of the SRUS patients; six of these lesions were clinically occult. Abnormal failure of the anal sphincter to relax on voiding was present in seven of the SRUS patients. These abnormalities resulted in the SRUS patients requiring a greater increase in intrarectal pressure (median, 100 cm water) to void than the control subjects (median, 65 cm water,P<0.01). This combination of high intrarectal pressure and rectal prolapse during straining seems to be the cause of SRUS This work was supported by a grant from the Medical Research Council.  相似文献   
8.
We developed a semiautomatic method termed “cortical circumferential profiling” for objective analysis of cerebral cortex function in emission tomographic neuroimaging studies. This method treats cortex as a continuous ring near the outer brain edge. A computer algorithm samples the cortex at 60 contiguous, equiangular locations, using 1-cm2 samples. These values are plotted as a function of cortical angle to produce the cortical circumferential profile. This method was used in a study of regional cerebral perfusion in 15 patients with Alzheimer's disease and 8 elderly control subjects using N-isopropyl [I-123]-iodoamphetamine. Cortical circumferential profiling decreases variability, examines the entire cortex within slices at preselected levels above the orbital-meatal line, and facilitates intrasubject and intersubject comparisons.  相似文献   
9.
10.
Background : Severe odontogenic infections are serious potentially lethal conditions. Following the death of a patient in the authors' institution this study was initiated to determine the risk factors, management and outcome of a consecutive series of patients.
Methods : All patients admitted to the Royal Adelaide Hospital under the care of the Oral and Maxillofacial Surgery Unit with odontogenic infections in calendar year 2003 were investigated. Detailed information relative to their pre-presentation history, surgical and anaesthetic management and outcome was obtained and analysed.
Results : Forty-eight patients, 32M, 16F, average age 34.5, range 19 to 88 years were treated. All presented with pain and swelling, with 21 (44 per cent) having trismus. Forty-four (92 per cent) were as a result of dental neglect and four (8 per cent) were regular dental patients having endodontic treatment which failed. Of those known to have been treated prior to presentation, most had been on antibiotics. Most patients had aggressive surgical treatment with extraction, surgical drainage, high dose intravenous antibiotics and rehydration. The hospital stay was 3.3 (range 1–16) days. Patients requiring prolonged intubation and high dependency or intensive care (40 per cent) had longer hospitalization. No patient died and all fully recovered.
Conclusion : Severe odontogenic infections are a serious risk to the patient's health and life. Management is primarily surgical with skilled anaesthetic airway management. Antibiotics are required in high intravenous doses as an adjunct and not as a primary treatment.  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