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   1941篇
  免费   91篇
  国内免费   1篇
耳鼻咽喉   42篇
儿科学   168篇
妇产科学   106篇
基础医学   206篇
口腔科学   75篇
临床医学   180篇
内科学   435篇
皮肤病学   78篇
神经病学   138篇
特种医学   32篇
外科学   284篇
综合类   36篇
预防医学   57篇
眼科学   50篇
药学   69篇
中国医学   1篇
肿瘤学   76篇
  2024年   1篇
  2023年   25篇
  2022年   27篇
  2021年   65篇
  2020年   41篇
  2019年   59篇
  2018年   56篇
  2017年   47篇
  2016年   63篇
  2015年   67篇
  2014年   95篇
  2013年   100篇
  2012年   156篇
  2011年   155篇
  2010年   92篇
  2009年   78篇
  2008年   136篇
  2007年   128篇
  2006年   124篇
  2005年   117篇
  2004年   94篇
  2003年   70篇
  2002年   63篇
  2001年   30篇
  2000年   24篇
  1999年   23篇
  1998年   13篇
  1997年   10篇
  1996年   6篇
  1995年   6篇
  1994年   1篇
  1993年   2篇
  1992年   10篇
  1991年   5篇
  1990年   5篇
  1989年   3篇
  1988年   3篇
  1987年   4篇
  1986年   1篇
  1984年   8篇
  1983年   5篇
  1982年   1篇
  1981年   2篇
  1980年   1篇
  1979年   4篇
  1978年   1篇
  1975年   2篇
  1974年   1篇
  1972年   2篇
  1970年   1篇
排序方式: 共有2033条查询结果,搜索用时 0 毫秒
991.
992.
Most measurements establishing standard values for the normal electrocardiogram have been derived from a healthy population, whereas many electrocardiographic interpretations are necessary in hospitalized or seriously ill patients. Therefore, the characteristics of the electrocardiogram were described from 48 autopsied men known to be free of cardiopulmonary disease by clinical assessment and by a special cardiac examination using postmortem coronary angiography and a chamber partition technique. Highest values, mean and standard deviation, and the upper 97.5 percentile or lower 2.5 percentile when appropriate were noted for QRS voltage, QRS axis and duration, and intrinsicoid deflection in V5 or V6. Any ST-segment and T-wave changes were noted as well as left and right atrial abnormalities. Twenty-eight electrocardiographic criteria recommended to detect left ventricular hypertrophy and 10 recommended to detect right ventricular hypertrophy were evaluated for percentage of false-positive results and the 97.5 percentile value for each criterion was developed from the present data base. The data in this study can be used as a standard for comparing electrocardiographic variation in middle-aged men with specific relevance for electrocardiographic criteria of ventricular hypertrophy.  相似文献   
993.
994.
Journal of Interventional Cardiac Electrophysiology - A significant shortening of the corrected QT interval (QTc) in addition to parasympathetic denervation after cardioneuroablation (CNA) was...  相似文献   
995.
996.

Background and Aim

This is a retrospective study aiming to investigate the effect of the number of high dose cytarabine-based chemotherapy (HiDAC) courses in patients with acute myeloid leukemia before allogenic stem cell transplantation (ASCT).

Materials and Methods

A total of 110 patients with acute myeloid leukemia who received ASCT between 2001 and 2018 were included in the study.

Results

Of the 110 patients, 25 (23%) patients received one course of HiDAC, 42 (38%) patients received two courses of HiDAC, 34 (31%) patients received three courses of HiDAC and 9 (8%) patients received four courses of HiDAC. Median follow-up for survivors was 71 months (range 4–186) for all patients. The 3-year overall survival for patients who received one course of HiDAC and patients who received more than one course of HiDAC were 49% and 70%, respectively (p?=?0.29). The 3-year disease free survival (DFS) for patients who received one course of HiDAC and patients who received more than one course of HiDAC were 38% and 66%, respectively (p?=?0.05). There was no statistically significant difference in OS between patients who received one or more than one consolidation chemotherapy. But there was nearly a statistically significant difference between patients who received one or more than one consolidation chemotherapy in DFS.

Conclusion

In conclusion, the administration of more than one consolidation chemotherapy may provide longer DFS, however the number of consolidation chemotherapy is not associated with statistically significant differences in overall outcomes.  相似文献   
997.
998.
999.
1000.
[Purpose] The aim of this study was to determine the functional differences between total knee arthroplasty (TKA) patients who were treated with supervised physiotherapy or a standardized home program and perform a cost analysis. [Subjects and Methods] Patients who received total knee arthroplasty between January 2009 and June 2011 were enrolled in this study; those with mean ages of 64.25±3.86 (60–68) years (n=18) and 68.08±6.25 (61–79) years (n=16) were placed in the supervised physiotherapy and standardized home program groups, respectively. All patients were evaluated by the same researcher before and after surgery, and the therapy programs were applied by another physiotherapist. All patients were evaluated for joint range of motion (ROM), pain, functional status (WOMAC), overall quality of life (SF-36), and depressive symptoms (BECK Depression Scale). [Results] A significant clinical improvement was observed in postoperative assessments. A statistically significant difference could not be found between ROM and functional levels of the patients in both groups. [Conclusion] No difference was found between the patients performing supervised or standardized home program with respect to the effects on functional status. A home exercise program can be used in the rehabilitation of patients with TKA, and implementation of home exercise programs can also reduce health-care spending.Key words: Total knee replacement, Rehabilitation, General health status  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