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   84篇
  免费   1篇
  国内免费   1篇
教育   42篇
科学研究   33篇
文化理论   1篇
信息传播   10篇
  2022年   3篇
  2021年   3篇
  2020年   5篇
  2019年   2篇
  2018年   3篇
  2017年   4篇
  2016年   1篇
  2015年   1篇
  2014年   3篇
  2013年   9篇
  2012年   3篇
  2011年   1篇
  2010年   4篇
  2009年   5篇
  2008年   1篇
  2007年   1篇
  2006年   3篇
  2005年   4篇
  2004年   3篇
  2003年   8篇
  2002年   1篇
  2001年   1篇
  2000年   1篇
  1999年   1篇
  1998年   2篇
  1997年   3篇
  1996年   5篇
  1992年   1篇
  1991年   2篇
  1989年   1篇
  1976年   1篇
排序方式: 共有86条查询结果,搜索用时 0 毫秒
31.
32.
In this section of Resonance, we invite readers to pose questions likely to be raised in a classroom situation. We may suggest strategies for dealing with them, or invite responses, or both. “Classroom” is equally a forum for raising broader issues and sharing personal experiences and viewpoints on matters related to teaching and learning science.  相似文献   
33.
34.
35.
Pathogenesis of coronary artery disease (CAD) is multi-factorial and several conventional risk factors have been ascribed; LDL-C being one of the important risk factor. However Indian population studies with established CAD often show LDL levels within normal range in patients with proven CAD. We hypothesized that Small dense low density lipoprotein (sdLDL) being more atherogenic might correlate more strongly to the occurrence and severity of CAD. The aim of the study was to evaluate the association between serum small dense LDL level and angiographically documented coronary artery disease. This is a cross sectional case control study in which sdLDL were measured in 126 patients with CAD and in 64 patients without CAD. Total cholesterol, HDL Cholesterol, LDL cholesterol and triglycerides were measured by standard methods along with other traditional risk factors. Direct quantitative measurement of sdLDL was done by enzymatic analysis. Mean sdLDL level was higher in patients with coronary stenosis than patients without coronary stenosis (16.3 ± 6.8 vs. 10.1 ± 5.7 mg/dL respectively, (p < 0.001). There was significant correlation between mean sdLDL and severity of CAD as assessed by syntax score with mean sdLDL level in low, intermediate and high syntax score being 15.0 ± 5.8, 20.1 ± 6.7 and 22.7 ± 7.3 mg/dL respectively (p value <0.001). A cut off value of 10.02 mg/dL was associated with presence of CAD (95 % CI 0.82–0.93, p < 0.001) using ROC curve. In conclusion Indian patients with established CAD have higher sdLDL levels compared to individuals without CAD despite having comparable LDL levels.  相似文献   
36.
In view of sufficient body of evidence to substantiate the role of free radical mediated oxidative injury in myocardial infarction (M.I.), the utility of exogenous supplementation with antioxidant substance, vitamin E was studied. Forty patients of acute myocardial infarction were divided into two equal groups, one who received vitamin E and the other who did not. Plasma MDA levels showed a reduction in patients of M.I. who received vitamin E as well as in those who did not, however, the decrease was significantly more in the vitamin E treated subgroup.  相似文献   
37.
阅读疗法——高校图书馆信息服务新拓展   总被引:3,自引:0,他引:3  
杨丽兵  孟默涵 《现代情报》2010,30(3):109-112
从阅读疗法的概念入手,分析了高校图书馆开展阅读疗法的可行性,给出了高校图书馆开展阅读疗法的具体步骤,并强调了高校图书馆开展阅读疗法应注意的事项。  相似文献   
38.
39.
T. S. Mohan 《Resonance》1996,1(5):59-67
The Java programming language is poised to change the way Internet is currently being used. In this article, dwe explore Java and find out why it has become popular with programmers all over the world.  相似文献   
40.
Within the domain of geometry, proof and proof development continues to be a problematic area for students. Battista (2007) suggested that the investigation of knowledge components that students bring to understanding and constructing geometry proofs could provide important insights into the above issue. This issue also features prominently in the deliberations of the 2009 International Commission on Mathematics Instruction Study on the learning and teaching of proofs in mathematics, in general, and geometry, in particular. In the study reported here, we consider knowledge use by a cohort of 166 Sri Lankan students during the construction of geometry proofs. Three knowledge components were hypothesised to influence the students’ attempts at proof development: geometry content knowledge, general problem-solving skills and geometry reasoning skills. Regression analyses supported our conjecture that all 3 knowledge components played important functions in developing proofs. We suggest that whilst students have to acquire a robust body of geometric content knowledge, the activation and the utilisation of this knowledge during the construction of proof need to be guided by general problem-solving and reasoning skills.  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