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   1674篇
  免费   140篇
  国内免费   7篇
耳鼻咽喉   7篇
儿科学   66篇
妇产科学   21篇
基础医学   181篇
口腔科学   44篇
临床医学   240篇
内科学   346篇
皮肤病学   26篇
神经病学   77篇
特种医学   268篇
外科学   136篇
综合类   22篇
一般理论   1篇
预防医学   101篇
眼科学   11篇
药学   167篇
中国医学   12篇
肿瘤学   95篇
  2023年   10篇
  2022年   10篇
  2021年   38篇
  2020年   15篇
  2019年   25篇
  2018年   42篇
  2017年   28篇
  2016年   29篇
  2015年   48篇
  2014年   48篇
  2013年   49篇
  2012年   64篇
  2011年   79篇
  2010年   61篇
  2009年   81篇
  2008年   63篇
  2007年   38篇
  2006年   43篇
  2005年   40篇
  2004年   38篇
  2003年   47篇
  2002年   35篇
  2001年   36篇
  2000年   34篇
  1999年   31篇
  1998年   54篇
  1997年   57篇
  1996年   68篇
  1995年   50篇
  1994年   46篇
  1993年   50篇
  1992年   24篇
  1991年   21篇
  1990年   22篇
  1989年   43篇
  1988年   44篇
  1987年   47篇
  1986年   51篇
  1985年   32篇
  1984年   19篇
  1983年   14篇
  1982年   24篇
  1981年   15篇
  1980年   10篇
  1978年   7篇
  1977年   14篇
  1976年   14篇
  1975年   19篇
  1972年   6篇
  1969年   9篇
排序方式: 共有1821条查询结果,搜索用时 15 毫秒
1.
2.
Background: Pemetrexed and cisplatin have recently been shown to significantly improve survival compared with cisplatin alone. However, there are only limited data reflecting teaching hospital experience outside a clinical trial. Pemetrexed has only been available in Australia on a restricted basis since 2002. We reviewed our experience of patients treated on the Australian ‘Special Access Scheme’ at three major thoracic oncology units. Methods: Charts were reviewed for all patients enrolled on the scheme. Data was extracted on age, World Health Organization (WHO) performance status, histology, prior therapy, time from diagnosis to starting pemetrexed, chemotherapy (pemetrexed alone or with a platinum), cycle number, response rate, actuarial progression‐free and overall survival. Doses were cisplatin 75 mg/m2 or carboplatin AUC = 5 and pemetrexed 500 mg/m2 every 21 days. Results: 52 patients (32 male and 20 female) were reviewed. Median age was 58 years and 88% were WHO 0–1. Histology included 54% epithelial, 17% biphasic (epithelial and sarcomatoid) and 21% undefined. The median time from diagnosis to administration of pemetrexed was 145 days. Sixty‐five percent had minimal surgical intervention with video assisted thoracoscopy, pleurodesis and biopsy, while 19% had received prior palliative radiation. Seventy‐one percent were chemotherapy naïve, the remaining 29% having received previous platinum and/or gemcitabine regimens. Twenty‐three percent had pemetrexed alone, 35% in combination with carboplatin and 42% with cisplatin. The median number of cycles was 4 (range 1–13). The response rate was 33%. No toxicity was observed in 20% grade 3–4 toxicity in 10% (majority nausea/vomiting). The median progression‐free and overall survival times from starting pemetrexed were 184 days and 298 days, respectively. Conclusions: Pemetrexed‐based regimens are safe and effective in a community setting in malignant mesothelioma.  相似文献   
3.
4.
OBJECTIVE: Reflection enables learners to analyze their experiences and capture the wisdom that lies within. Effective teaching requires reliable methods of assessment. Several methods of assessing reflective writing have been described; however, they often require significant training, and reliability has seldom been assessed. This study was designed to determine the interrater reliability of a method of assessing reflective writing by using a modified Bloom's Taxonomy. METHODS: Twenty-one third-year medical students maintained reflective journals throughout their pediatric clerkship. A coding schema based on Bloom's Taxonomy was developed to assess the level of cognitive processing evident in the journals. Journals were independently assessed by 3 raters. Percent agreement, kappa statistics, and intraclass correlation coefficients (ICC [2,1]) were used to assess interrater reliability. RESULTS: Three hundred eight entries from 21 journals were assessed. Percent agreement ranged from 78.2% to 100%. Kappa statistic for each level ranged from 0.57 +/- 0.04 to 0.73 +/- 0.04, and for the highest level of processing evident it ranged from 0.52 +/- .04 to 0.58 +/- 0.04. ICC (2,1) for each level of cognitive processing ranged from 0.62 (F = 6.20; P = .000) to 1.00, and for the highest level of cognitive processing evident, it was 0.79 (F = 12.42; P = .000). Substantial to almost perfect agreement was attained. CONCLUSIONS: Reflective journals allow learners to revisit their experiences for critical analysis and deeper learning. This study describes a reliable method, based on Bloom's Taxonomy, of determining whether learners have achieved higher order thinking through reflective journal writing. This method can provide a baseline for facilitating higher order processing, critical thinking, and reflective practice.  相似文献   
5.
6.
7.
8.
9.
10.
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