National University of Malaysia

About: National University of Malaysia is a education organization based out in Kuala Lumpur, Malaysia. It is known for research contribution in the topics: Population & Heat transfer. The organization has 26593 authors who have published 41270 publications receiving 552683 citations. The organization is also known as: NUM & Universiti Kebangsaan Malaysia.

Animal Models in Cardiovascular Research: Hypertension and Atherosclerosis.

Abstract: Hypertension and atherosclerosis are among the most common causes of mortality in both developed and developing countries. Experimental animal models of hypertension and atherosclerosis have become a valuable tool for providing information on etiology, pathophysiology, and complications of the disease and on the efficacy and mechanism of action of various drugs and compounds used in treatment. An animal model has been developed to study hypertension and atherosclerosis for several reasons. Compared to human models, an animal model is easily manageable, as compounding effects of dietary and environmental factors can be controlled. Blood vessels and cardiac tissue samples can be taken for detailed experimental and biomolecular examination. Choice of animal model is often determined by the research aim, as well as financial and technical factors. A thorough understanding of the animal models used and complete analysis must be validated so that the data can be extrapolated to humans. In conclusion, animal models for hypertension and atherosclerosis are invaluable in improving our understanding of cardiovascular disease and developing new pharmacological therapies.

A longitudinal examination of intellectual capital reporting in Marks & Spencer annual reports, 1978–2008

Abstract: This paper examines the intellectual capital content of Marks & Spencer annual reports over a 31 year period from 1978 to 2008 using a content analysis instrument. Motivated by the gap among prior studies in respect of longitudinal samples, the paper also sets out to note the ways in which the annual report has changed over the three decades in response to the supposed change from the assumption that fixed assets and operations were the key driver of value creation to a belief that knowledge and the stock of intellectual assets had become a more powerful explanation of value-added. The paper finds an overall increase in intellectual capital reporting over the 31 years but notes a particular increase in relational capital reporting and a re-ordering of sub-categories over time. Narrative (as opposed to quantitative) reporting has increased and ‘factual’ (as opposed to opinion and judgement) reporting has decreased. The paper concludes that annual report narratives have reflected a wider change in the market for information among investors and other stakeholders. Whilst the exact nature of these market changes was beyond the scope of this paper, it is concluded that changing patterns of ICR reflect the increased complexity of the messages being conveyed in voluntary reporting. The increased reliance on IC in value creation has, we argue, created a need for narrative of less factual certainty and with more ambiguity and circumspection in describing increasingly complex knowledge assets.

Platinum-Based Catalysts on Various Carbon Supports and Conducting Polymers for Direct Methanol Fuel Cell Applications: a Review

Abstract: Platinum (Pt)-based nanoparticle metals have received a substantial amount of attention and are the most popular catalysts for direct methanol fuel cell (DMFC). However, the high cost of Pt catalysts, slow kinetic oxidation, and the formation of CO intermediate molecules during the methanol oxidation reaction (MOR) are major challenges associate with single-metal Pt catalysts. Recent studies are focusing on using either Pt alloys, such as Fe, Ni, Co, Rh, Ru, Co, and Sn metals, or carbon support materials to enhance the catalytic performance of Pt. In recent years, Pt and Pt alloy catalysts supported on great potential of carbon materials such as MWCNT, CNF, CNT, CNC, CMS, CNT, CB, and graphene have received remarkable interests due to their significant properties that can contribute to the excellent MOR and DMFC performance. This review paper summaries the development of the above alloys and support materials related to reduce the usage of Pt, improve stability, and better electrocatalytic performance of Pt in DMFC. Finally, discussion of each catalyst and support in terms of morphology, electrocatalytic activity, structural characteristics, and its fuel cell performance are presented.