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   2791篇
  免费   81篇
  国内免费   9篇
耳鼻咽喉   44篇
儿科学   162篇
妇产科学   193篇
基础医学   187篇
口腔科学   107篇
临床医学   200篇
内科学   553篇
皮肤病学   81篇
神经病学   146篇
特种医学   103篇
外科学   617篇
综合类   41篇
预防医学   68篇
眼科学   130篇
药学   143篇
中国医学   4篇
肿瘤学   102篇
  2023年   13篇
  2022年   20篇
  2021年   38篇
  2020年   35篇
  2019年   49篇
  2018年   45篇
  2017年   36篇
  2016年   53篇
  2015年   51篇
  2014年   91篇
  2013年   112篇
  2012年   191篇
  2011年   207篇
  2010年   102篇
  2009年   88篇
  2008年   185篇
  2007年   254篇
  2006年   228篇
  2005年   253篇
  2004年   206篇
  2003年   163篇
  2002年   157篇
  2001年   84篇
  2000年   64篇
  1999年   62篇
  1998年   5篇
  1997年   9篇
  1996年   3篇
  1995年   6篇
  1994年   3篇
  1993年   3篇
  1992年   15篇
  1991年   8篇
  1990年   7篇
  1989年   3篇
  1988年   2篇
  1987年   2篇
  1986年   2篇
  1985年   4篇
  1978年   1篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   5篇
  1973年   1篇
  1972年   3篇
  1971年   3篇
  1970年   1篇
  1968年   1篇
  1967年   1篇
排序方式: 共有2881条查询结果,搜索用时 125 毫秒
21.
22.
23.
24.
Surgical treatment of substernal goiter   总被引:5,自引:0,他引:5  
BACKGROUND: Substernal goiter differs from its cervical counterpart in regard to its clinical presentation, surgical management, pathological analysis and postoperative complication. METHODS: Retrospective analysis of 1320 thyroidectomies performed at the Hacettepe University Hospital between 1990 and 1997. RESULTS: 30 (2.3%) of 1320 thyroidectomies underwent operation for removal of substernal goiters in an 8-year period. The most common symptom was cervical mass (67%) and 33% of the patients were asymptomatic. Computerised tomography was the most accurate pre-operative test for detecting substernal extension. Substernal goiters were removed by collar incisions in 93% of the cases. The pathology was generally found to be benign (94%), but follicular carcinoma was present in two (6%) patients. There was no mortality and no complications were observed in 73% of the patients. CONCLUSIONS: The presence of substernal goiter is an indication for removal given the lack of any effective medical therapy, low surgical morbidity, risk of malignancy and acute obstructing symptoms.  相似文献   
25.
26.
27.
Suffering comes in many ways for patients confronting cancer. One of these is an unspecifiable fear about death, which is an existential issue. The aim of this study was to investigate the relationship between death anxiety and its correlates in cancer patients. Seventy cancer patients were assessed using SCID-I, Templer's Death Anxiety Scale, the Hospital Anxiety (A) and Depression (D) Scale, the Distress Thermometer, the Visual Analogue Scale for pain (VAS), the Global Assessment of Functioning, and Glock and Stark's Dimensions of Religious Commitment scales, and these assessments were compared between cancer patients with and without death anxiety. Multiple regression analysis was conducted after correlation analysis between death anxiety and sociodemographic and clinical variables. Axis I psychiatric diagnosis, pain scores, and negative believes about what will happen after death were found to be higher in patients having death anxiety than patients not having death anxiety. Also life expectancy was perceived as shortened in patients with death anxiety. Death anxiety was associated with anxiety, depressive symptoms, and beliefs about what will happen after death. In conclusion, death anxiety could not be regarded as a natural consequence of having cancer; it is associated with the unresolved psychological and physical distress.  相似文献   
28.
29.
We presented a 77‐year‐old man with hypertrophic obstructive cardiomyopathy applied with flail tricuspid leaflet and severe tricuspid regurgitation leading to right heart failure 2 months after the failed septal ablation. The ruptured anterior tricuspid papillary muscle resulted from infarction of the base of anterior papillary muscle of the right ventricle (RV) confirmed by magnetic resonance imaging. As the septomarginal band is frequently lit up by intracoronary contrast that particular attention should be paid to the RV papillary muscles. And, if the papillary muscles or the RV free wall is brightened, then the use of that septal artery should be avoided.  相似文献   
30.
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