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   80篇
  免费   0篇
教育   46篇
科学研究   29篇
体育   1篇
信息传播   4篇
  2023年   1篇
  2022年   1篇
  2021年   3篇
  2020年   3篇
  2018年   3篇
  2017年   4篇
  2016年   1篇
  2015年   1篇
  2014年   2篇
  2013年   9篇
  2012年   2篇
  2011年   5篇
  2010年   5篇
  2009年   3篇
  2008年   5篇
  2007年   2篇
  2006年   7篇
  2005年   1篇
  2004年   2篇
  2003年   1篇
  2001年   4篇
  2000年   3篇
  1999年   1篇
  1998年   5篇
  1997年   1篇
  1994年   1篇
  1990年   1篇
  1984年   1篇
  1982年   1篇
  1977年   1篇
排序方式: 共有80条查询结果,搜索用时 15 毫秒
61.
In order to determine whether the screening of lipid profile is justified in patients with hypothyroidism we estimated serum lipids in cases having different levels of serum TSH. 60 patients of hypothyroidism in the age group of 20 to 60 yrs were studied for thyroid profile over a period of one year. On the basis of serum TSH level the cases were divided into three groups: In the first group TSH concentration was 8.8±2.99 μlU/ml, 95% confidence interval (Cl) 8.8±1.07, whereas serum total cholesterol and LDL-chol levels were 196±37.22 and 126±29.17 mg/dl respectively. The statistical analysis of these two groups showed a significant correlation between raised TSH levels and serum total cholesterol and LDL-chol (P<0.05 & P<0.01) respectively. We conclude that hypothyrodism is associated with changes in lipid profile.  相似文献   
62.
Current study is conducted to evaluate method verification of two locally available kits manufactured by DSI & BIORAD for quantitative estimation of Hepatitis B virus antibodies in human normal immunoglobulin by using International standard of National Institute of Biological Standards and Control. Four analyst perform five sets of test in duplicate analysing accuracy, precision, and limit of detection, sensitivity and specificity. Our results suggest that both DSI and BIORAD kits fulfil the validation criteria and are sensitive to detect up to 10 mIU concentration precisely and accurately. DSI kit is more precise at concentration 100 mIU and economically 4–5 times cheaper in local market; on the other hand, BIORAD kits provide larger detection range up to 1000 mIU.  相似文献   
63.
Presence of oxidative stress in type 2 diabetes mellitus (DM) is well proved. Current study was undertaken to know the relation between fasting plasma glucose (FPG) and copper along with antioxidants like total thiols and ceruloplasmin, and antioxidant enzyme glutathione S transferase (GST). The study group consisted of a total of 201 subjects which included nondiabetic healthy control subjects (n = 78) and diabetic patients (n = 123). Plasma total thiols, GST, copper and ceruloplasmin levels were measured all the subjects using spectrophotometric methods and FPG levels were determined in clinical chemistry analyzer Hitachi 912. There was significant increase in FPG (P<0.001) and copper (P<0.001) and decrease in ceruloplasmin (P<0.001) and protein thiols (P<0.001) in type 2 DM cases compared to healthy controls. There was no significant change in GST between type 2 DM cases and controls. There was significant negative correlation of FPG with antioxidants like ceruloplasmin (r = −0.420, P<0.001) and total thiols (r = −0.565, P<0.001). Protein thiols correlated positively with ceruloplasmin (r = 0.364, P<0.001). Our study indicates possible increase in copper mediated generation of ROS leading to increased consumption of available antioxidants in the body.  相似文献   
64.
Insulin resistance and the resultant hyperinsulinemia exacerbate the reproductive abnormalities of Polycystic Ovarian Syndrome by increasing ovarian androgen productions and decreasing serum sex hormone binding globulin. The present study was conducted to estimate serum insulin and testosterone level in 44 PCOS cases and 32 control patients. Simultaneously the role of metformin (an insulin sensitizing agent) in modulating insulin resistance and serum androgen level was also analyzed. A significant rise in serum insulin and testosterone (P < 0.001) was observed in cases in comparison to control. Fasting Plasma Glucose to insulin ratio, a marker of insulin resistance revealed a significant fall in PCOS group. Follow up of cases with metformin for 3 months revealed a significant fall in serum insulin (P < 0.05) with improvement in insulin resistance along with a nonsignificant fall in testosterone level. Serum insulin registered a significant positive correlation (P < 0.05) with serum testosterone revealing its etiological association. Thus administration of drugs ameliorating insulin levels is expected to provide new therapeutic modality for PCOS.  相似文献   
65.
Active learning pedagogies play an important role in enhancing higher order cognitive skills among the student community. In this work, a laboratory course for first year engineering chemistry is designed and executed using an inquiry-based learning pedagogical approach. The goal of this module is to promote higher order thinking skills in chemistry. Laboratory exercises are designed based on Bloom's taxonomy and a just-in-time facilitation approach is used. A pre-laboratory discussion outlining the theory of the experiment and its relevance is carried out to enable the students to analyse real-life problems. The performance of the students is assessed based on their ability to perform the experiment, design new experiments and correlate practical utility of the course module with real life. The novelty of the present approach lies in the fact that the learning outcomes of the existing experiments are achieved through establishing a relationship with real-world problems.  相似文献   
66.
Reading and writing deficits in twomultilingual speakers of Kannada, Hindi andEnglish are described. Disorders of the twopatients (Mr G and Ms S) had differentetiologies. Mr G had severe alexia withagraphia in English as well as in Kannada andHindi. Ms S exhibited dissociation across thelanguages, showing symptoms of surface dyslexiain English and mild dyslexia in Kannada. Bothpatients were tested on the Western AphasiaBattery and on tests developed by Coltheart.Their test performance is described anddiscussed in the context of orthographicdifferences between English and various Indianlanguages.  相似文献   
67.
It is clear from the foregoing, that the development of prodrugs promises to be a very effective method for treatment of diseases in the future. This approach has several advantages over conventional drug administration. Site specificity is central to the prodrug development strategy. Even though at present prodrugs are not prevalent in clinical use, in future there will be prodrugs for every known drug to make them effective in treatment. Drug discovery and prodrug development appear to be complementary for the generation of target specific medicines of future. At present the research in this area is at a nascent stage due to lack of information regarding all the enzymes or receptors most suitable for targeting purposes. As the unravelling of the microbiological details of the affected targets become clear, prodrug development will surely decrease side/toxic effects of drugs and also trigger development of more potent primary drugs.  相似文献   
68.
通过分析新建地方本科院校新工科专业建设面临的问题和新工科背景下“二元制”校企合作的局限性,提出“三元协同育人机制”,研究新工科背景下的教育教学资源配置方式并进行协同育人的实践探索,升级校企合作,优化人才培养模式。  相似文献   
69.
70.
ABSTRACT

Local TV news stations regularly post to social media, on Facebook in particular, in an effort to engage audiences, but little is known about the effect of this practice on newscast ratings. We examine the relationship between engagement on Facebook and newscast ratings using data from Shareablee and Nielsen respectively in regression analyses. We find that Facebook engagement does not cannibalize TV ratings, rather there is a clear positive relationship between the two. However, further analyses suggest that this relationship may be driven by interest in news events or other market-wide factors that result in both Facebook engagement and viewership increasing or decreasing simultaneously.  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