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21.
A historical account of the development of quantum mechanics, and the roles played by many outstanding physicists, their views and philosophical attitudes is presented. Ingenious and path-breaking experiments that helped this development along are highlighted. Ideas and notions that initially arose in the course of discussions on foundations of quantum mechanics and later paved the way for the emergence of the field of Quantum Information Science and Technology are briefly touched upon. 相似文献
22.
Nicola J. Gibbons Chris Evans Annette Payne Kavita Shah Darren K. Griffin 《CBE life sciences education》2004,3(4):263-269
Laboratory classes are commonplace and essential in biology departments but can sometimes be cumbersome, unreliable, and a drain on time and resources. As university intakes increase, pressure on budgets and staff time can often lead to reduction in practical class provision. Frequently, the ability to use laboratory equipment, mix solutions, and manipulate test animals are essential learning outcomes, and “wet” laboratory classes are thus appropriate. In others, however, interpretation and manipulation of the data are the primary learning outcomes, and here, computer-based simulations can provide a cheaper, easier, and less time- and labor-intensive alternative. We report the evaluation of two computer-based simulations of practical exercises: the first in chromosome analysis, the second in bioinformatics. Simulations can provide significant time savings to students (by a factor of four in our first case study) without affecting learning, as measured by performance in assessment. Moreover, under certain circumstances, performance can be improved by the use of simulations (by 7% in our second case study). We concluded that the introduction of these simulations can significantly enhance student learning where consideration of the learning outcomes indicates that it might be appropriate. In addition, they can offer significant benefits to teaching staff. 相似文献
23.
Priya Gururajan Prema Gurumurthy Pradeep Nayar Sai Babu A. Sarasabharati Dolice Victor K. M. Cherian 《Indian journal of clinical biochemistry : IJCB》2009,24(3):229-233
CD40-CD40L interaction plays a significant role in the pathogenesis of atherosclerosis and coronary artery disease. The clinical
predictive value of Soluble CD40 Ligand (sCD40L) was evaluated in patients with Acute Coronary Syndrome (ACS) and Non-Cardiac
Chest Pain (NCCP). The levels of serum soluble CD 40 ligand were measured by ELISA in 485 patients admitted to emergency care
unit, of which 89 patients were diagnosed as NCCP. The levels of sCD40L were significantly increased in patients with ACS
when compared to controls and NCCP. Receiver Operator Characteristic (ROC) Curve analysis showed sCD40L to be a good discriminator
between patients with ischemic heart disease and patients without ischemic heart disease. The area under the curve was found
to be 0.940 with 95% CI (0.915 to 0.960) (P<0.0001). The cut off value from the ROC curve was 2.99 ng/ml, above which sCD40L
was considered to be positive. Combined assessment of sCD40L, Troponin I and CK-MB enhanced the risk prediction and early
classification of patients. sCD40L seems to be a promising biomarker for identification and risk stratification for patients
with acute coronary syndrome. 相似文献
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Does your professional tool bag include the well‐known ideas, models, and practices that training and performance improvement professionals use? This article organizes the advent of essential tools using the Learning, Training, and Performance Timeline, describes the major patterns that developed during historical periods, and explores relevant practical and scholarly uses for the Timeline. Resources are provided for those who have further inquiries about the historical background of training and performance improvement. 相似文献
26.
Practical applications of multimedia technologies that support early literacy are described and evaluated, including several
variations of recorded books and stories, utilizing mainstream audio and video recording appropriate for libraries and schools.
Special emphasis is given to the needs of children with disabilities and children who are acquiring a second language. 相似文献
27.
Mary K. Chang Kavita Rao Maria L. Stewart Cynthia A. Farley Katherine Li 《Studying Teacher Education》2016,12(1):20-36
In order to explore ways to integrate new pedagogical practices, five faculty members created an informal faculty learning community focused on writing-to-learn practices, an inquiry and process-based writing pedagogy. The faculty members learned the writing-to-learn practices together, periodically met to discuss how they implemented the practices, and reflected on each other’s instructional methods in the contexts of their own experiences. The faculty members engaged in a self-study in order to understand how the collaborative nature of the learning community helped them to learn and use the new teaching practices. After participating in a series of workshops together, they shared written reflections about their experiences of employing the practices in their own classrooms. The findings of this study reveal that participation in a faculty learning community provided an engaging and effective way to learn and make use of new pedagogical practices. Participants gained practical adaptive strategies from each other, felt supported in their experimentation with the new practices, and analyzed more deeply the ways in which the new practices could be integrated into their teaching. The authors describe how an informal faculty learning community can be an effective tool for faculty to research, learn, and analyze the learning of specific pedagogical practices. 相似文献
28.
Ramesh Chander Kavita Singh A K Khanna S M Kaul Anju Puri Rashmi Saxena Gitika Bhatia Farhan Rizvi A K. Rastogi 《Indian journal of clinical biochemistry : IJCB》2004,19(2):141-148
Terminalia arjuna (T. arjuna) stem bark was successively extracted with petroleum ether (A), solvent ether (B), ethanol (C) and water (D). The lipid lowering
activity of these four fractions A, B, C, and D was evaluatedin vivo in two models viz., triton WR-1339 induced hyperlipemia in rats as well as fructose rich high fat diet (HFD) fed diabetic-
dyslipidemic hamsters. Hyperlipidemia induced by triton caused marked increase in the plasma levels of total cholesterol (Tc),
triglyceride (Tg) and phospholipids (PL) in rats. After treament withT. arjuna fractions A, B, C, and D at the doses of 250 mg/kg per oral (p.o.),only the ethanolic fraction (C) exerted significant lipid
lowering effect as assessed by reversal of plasma levels of Tc, Tg and PL in hyperlipidemic rats. In another experiment, feeding
with HFD produced marked dyslipidemia as observed by increased levels of plasma Tc, Tg, glucose (Glu), glycerol (Gly) and
free fatty acids (FFA) in hamsters. After treatment withT. arjuna fractions at the doses of 250 mg/kg p.o. only two fraction (B and C) could exert significant lowering in the plasma levels
of lipids and Glu. in dyslipidemic hamsters.In vitro experimentT. arjuna fractions at tested concentrations (50–500 μg/ml) inhibited the oxidative degradation of lipids in human low density lipoprotein
and rat liver microsomes induced by metal ions. These fractions when tested against generation of oxygen free radicals at
the concentrations (50–500 μg/ml), counteracted the formation of superoxide anions (O−2) and hydrodyl radicals (OH) in non enzymic test systems. The efficacy ofT. arjuna fractions as antidyslipidemic and antioxidant agents was found, fraction C> fraction B> fraction A. 相似文献
29.
Shalia KK Mashru MR Soneji SL Shah VK Payannavar S Walvalkar A Mokal RA Mithbawkar SM Kudalkar KV Abraham A Thakur PK 《Indian journal of clinical biochemistry : IJCB》2010,25(3):273-279
Platelet-endothelial cell adhesion molecule-1 (PECAM-1) has role in atherosclerotic plaque development as well as in thrombosis leading to myocardial infarction (MI). Present study was aimed to analyse the association of PECAM-1 Leu125Val gene polymorphism with MI in Indian population. Subjects included healthy individuals as control (N = 116) and MI patients (N = 100) divided into two groups; MI patients at presentation of the acute event (MI-Group-1, N = 46) and patients with recent event of MI stabilized with treatment 4.5 days from their symptoms (MI-Group-2, N = 54). The difference in the distribution of Leu125Val genotype frequencies of controls and patients did not reach statistical significance. However Leu allele frequency (0.57) was more associated with MI patients as compared to control (0.504). sPECAM-1 levels were significantly elevated in patients at acute event of MI (MI-Group-1) by 44.1% (P = 0.009) as compared to controls and by 95.2% (P = 0.001) as compared to stabilized MI patients (MI-Group-2). 相似文献
30.