Prevention of isoproterenol-induced cardiac hypertrophy by eugenol, an antioxidant

Recent reports on the involvement of calcineurin in cardiac hypertrophy and its susceptibility to free radicals, prompted us to examine possible beneficial effects of dietary antioxidants in this regard. In continuation of initialin vitro studies revealing eugenol to be a potent calcineurin inhibitor, we investigated its ability to reverse isoproterenol-induced cardiac hypertrophy in rats. Intraperitoneal administration of isoproterenol (1 mg/kg body wt/day for 10 days) induced cardiac hypertrophy with increased heart weight and enhanced apoptosis of myocytes concomitant with accumulation of reactive oxygen species, decreased glutathione contents, increased activities of calcineurin and protein kinase C in ventricular tissue. Administering eugenol for 3 days (1 mg/kg body wt/twice a day), followed by combined administration of isoproterenol and eugenol resulted in significant reversal of cardiac hypertrophy and restoration of above changes. These results suggest that eugenol, a natural antioxidant of dietary origin, may offer potential benefits in the management of cardiac hypertrophy.     

Disturbing Reading: J.M. Coetzee's ‘The Problem of Evil’

A literary representation can give us grief. J.M. Coetzee's ‘The Problem of Evil’ follows the crisis of reading of his main character Elizabeth Costello as she struggles to comprehend discursive images of evil. Costello's trouble with reading is not attributed to a cognitive deficiency in her ability to read the text but to a psychical disturbance she experiences while reading. Thinking through our ‘disturbances’ while and after reading gives readers an opportunity to rethink reading as affected by the thoughts and words of others.     

Investigation of differential movement at railroad bridge approaches through geotechnical instrumentation

Railway transitions experience differential movements due to differences in track system stiffness, track damping characteristics, foundation type, ballast settlement from fouling and/or degradation, as well as fill and subgrade settlement. This differential movement is especially problematic for high speed rail infrastructure as the ??bump?? at the transition is accentuated at high speeds. Identification of different factors contributing towards this differential movement, as well as development of design and maintenance strategies to mitigate the problem is imperative for the safe and economical operation of both freight and passenger rail networks. This paper presents the research framework and initial instrumentation details from an ongoing research effort at the University of Illinois at Urbana-Champaign. Three bridge approaches experiencing recurrent geometry problems were instrumented using multidepth deflectometers (MDDs) and strain gages to identify different factors contributing to the development of differential movements.     

Vertically integrated skill development and vocational training for socioeconomically marginalised youth: The experience at Gram Tarang and Centurion University,India

At present, India’s education system turns out millions of young people who are ready to think, but not enough people with entrepreneurial or employment skills. As India faces increasing limits on its resources, both economic and natural, the competency and capability of human resources play a pivotal role in developing and sustaining the economy. The sector of skill development and vocational education requires a paradigm shift, from a static framework to one that is dynamic and constantly adapting to meet industry and social demands. Centurion University of Technology and Management has evolved to provide relevant and inclusive education to young people at every level, from school dropouts to graduates. Through its social entrepreneurship initiative, Gram Tarang Employability Training Services, Centurion partners with industries and the government to develop the capacity for employment and entrepreneurship in all its students and trainees. This article describes Centurion’s vision, operational approach, and the underlying beliefs that guide its innovative thinking, based on its years of working in some of India’s most marginalised and underdeveloped regions.     

Transnational accreditation for public schools: IB,PISA and other public–private partnerships

ABSTRACT

This article examines a particular type of public–private partnership (PPP) that is rarely studied in comparative educational policy studies: one in which a government funds privately run international schools. The aim of this PPP is to enrich and thereby improve the regular curriculum or to the quality of education in public schools. As the exponential growth of International Baccalaureate (IB) illustrates, such forms of PPP have increased significantly over the past few years. The authors show that transnational accreditation holds a special appeal for the middle class that is committed to cosmopolitanism, international mobility, and global citizenship. However, international standards schools such as IB are not alone with advancing a transnational accreditation of their educational programmes. Symbolically, Programme in International Student Assessment also provides a transnational accreditation, albeit not on individual education programmes but rather on entire educational systems. The article examines the reasons for the popularity of this type of PPP, analyses the interaction between the private and public education sectors, and investigates how governments explain, and what they expect from, the close cooperation with private education providers.     

The Reciprocal Relationship Between Technology and Psychology

This article describes the design and implementation of the year 2 curriculum and student learning experiences in the Michigan State University Master of Arts in Educational Technology program. We discuss the ways that this second set of courses builds on the first year of the program that students encounter, and also describe the theoretical impetus and design-based implications for learning how to teach with technology in effective and creative ways. Students in this group usually come in with some prior knowledge of educational theory, as well as some experience of working with classroom technologies. We intentionally build upon this prior knowledge, to take it to the next level of a more sophisticated TPACK-oriented understanding of learning in technology-driven contexts. Our year 2 courses move classical educational psychology theories of learning, along with educational research issues, squarely into the modern context of educational technology and teacher leadership. Our curriculum design focuses centrally on making meaningful experiences for teachers around technology, and helping them develop the knowledge and skills to create such experiences for their students. Our goal is to develop teachers who see themselves as flexible designers of learning experiences through the creative re-purposing of existing technologies.     

A Study of Carotid Atherosclerosis in Patients with Non-alcoholic Fatty Liver Disease

Non-alcoholic fatty liver disease shares many features of metabolic syndrome and its presence could signify a substantial cardiovascular risk above and beyond that conferred by individual risk factors. This study is an attempt to investigate the association of non-alcoholic fatty liver disease with carotid intima-media thickness and plaque as surrogate measures of increased cardiovascular risk. The study was conducted on 645 non diabetic, non alcoholic subjects in the age range of 20–60 years. Metabolic syndrome was assessed by using ATP III and ADA (2005) criteria. Anthropometric factors—waist circumference and blood pressure were measured. Fasting serum samples were analyzed for glucose, triglyceride, cholesterol and its fractions, insulin, alanine and aspartate transaminases, gamma glutamyl transferase and free fatty acids. Insulin resistance and secretion were calculated by homeostasis model and insulin sensitivity by QUICKI index. Liver ultrasonographic scanning was used for assessing fatty liver. Carotid atherosclerosis was assessed by B-mode ultrasonography of common carotid artery and internal carotid artery. The prevalence of non-alcoholic fatty liver disease was 15.6 % in non alcoholic population and 68.5 % of non-alcoholic fatty liver disease had metabolic syndrome, which was associated with hyperinsulinemia, insulin resistance, insulin insensitivity along with elevated levels of waist circumference, blood pressure, triglyceride, FFA and decreased HDL cholesterol. NAFLD patients had markedly greater carotid intima media thickness than non NAFLD subjects with MCIMT of 591.6 ± 108 and 489.5 ± 132.4 μm (P < 0.001) and plaque prevalence of 19.2 and 2.2 %, respectively, thus the carotid intima media thickness is associated with NAFLD.     

Argumentation: A strategy for improving achievement and revealing scientific identities

In this paper we explore the relationship between learning gains, measured through pre‐assessment and post‐assessment, and engagement in scientific argumentation. In order to do so, this paper examines group discourse and individual learning during the implementation of NASA Classroom of the Future’s BioBLAST!® (BB) software program in a high school biology classroom. We found that the argumentative structures, the quality of these structures, and the identities that students take on during collaborative group work are critical in influencing student learning and achievement in science. We provide recommendations for instructors implementing argumentation in their science classrooms, and provide suggestions for the development of future research in this area.     

Roles and competencies of academic counsellors in distance education

Academic counsellors or tutors are engaged as a link between learners and distance teaching institutions. They perform various roles such as facilitating learning of subject matter content, assessing assignments, providing motivation and encouragement, and supervising research/term papers/project work. Each of these roles requires specific competencies to enable them to perform satisfactorily. This paper identifies the roles performed by academic counsellors at the Indira Gandhi National Open University (IGNOU) and the competencies required for each role. It also provides a generic list of competencies required to perform as an academic counsellor. Based on self‐rating of the competency of a group of academic counsellors, the paper recommends the training of academic counsellors and the development of distance teaching materials for use in competence‐building.