3 resultados para CSD

em Aston University Research Archive


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Although prior studies looked at corporate social disclosures (CSD hereafter) mainly from the managerial perspective there are very few studies which examined CSD from a non-managerial stakeholder perspective. This paper contributes to that limited CSD literature. It does so from a developing country perspective. The main aim of this paper is to examine the views of selected NGOs on current CSD practices in Bangladesh using Gramscian hegemonic analysis. For this purpose, semi-structured interviews were carried out in the selected social and environmental NGOs of both overseas and Bangladesh origin. The results suggest that NGOs viewed the current CSD practice as far from satisfactory. They also argued that it is mainly aimed at maintaining corporate interests of image building. The study suggests that it is not corporations to be blamed alone for production of CSD in the interests of business, it is the capitalist society that consents to such reproduction of CSD.

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Aluminium (Al) is known to be neurotoxic and has been associated with the aetiology of Alzheimer's Disease. To date, only desferrioxamine (DFO), a trihydroxamic acid siderophore has been used in the clinical environment for the removal of Al from the body. However, this drug is expensive, orally inactive and is associated with many side effects. These studies employed a theoretical approach, with the use of quantum mechanics (QM) via semi-empirical molecular orbital (MO) calculations, and a practical approach using U87-MG glioblastoma cells as a model for evaluating the influence of potential chelators on the passage of aluminium into cells. Preliminary studies involving the Cambridge Structural Database (CSD) identified that Al prefers binding to bidentate ligands in a 3:1 manner, whereby oxygen was the exclusive donating atom. Statistically significant differences in M-O bond lengths when compared to other trivalent metal ions such as Fe3+ were established and used as an acceptance criterion for subsequent MO calculations. Of the semi-empirical methods parameterised for Al, the PM3 Hamiltonian was found to give the most reliable final optimised geometries of simple 3:1 Al complexes. Consequently the PM3 Hamiltonian was used for evaluating the Hf of 3:1 complexes with more complicated ligands. No correlation exists between published stability constants and individual parameters calculated via PM3 optimisations, although investigation of the dicarboxylates reveals a correlation of 0.961 showing promise for affinity prediction of closely related ligands. A simple and inexpensive morin spectrofluorescence assay has been developed and optimised producing results comparable to atomic absorption spectroscopy methods for the quantitative analysis of Al. This assay was used in subsequent in vitro models, initially on E. coli, which indicated that Al inhibits the antimicrobial action of ciprofloxacin, a potent quinolone antibiotic. Ensuing studies using the second model, U87-MG cells, investigated the influence of chelators on the transmembrane transport of Al, identifying 1,2-diethylhydroxypyridin-4-one as a ligand showing greatest potential for chelating Al in the clinical situation. In conclusion, these studies have explored semi-empirical MO Hamiltonians and an in-vitro U87-MG cell line, both as possible methods for predicting effective chelators of Al.

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This chapter aims to expand the existing CSD literature by providing insights from current Russian CSD practice, which is believed to be an under researched area. The main objective here is to examine the extent of CSD in Russia. For this purpose content analysis of 2004 annual reports of 20 large companies which are listed on the Russian stock exchange was undertaken. The key findings show that 18 (90%) out of the 20 companies included in the study made some social and environmental disclosures. Employee related disclosures are the dominant category with 90% of companies making some form of disclosures in this category. In addition, 85% of companies made some form of environmental disclosures while only 55% of companies made ethical disclosures. According to this study, the quality of disclosure is generally poor due to lack of external verification and lack of completeness. Although it is more likely that in the future, pressures will be brought to bear on Russian companies to engage in more transparent and accountable CSD practice, still very little optimism for improvement can be expressed here. This is mainly due to lack of mandatory requirements for CSD in Russia and also to some extent due to the absence of strong NGOs and other pressure groups who can exert effective pressures on Russian companies to improve their CSD practice. © 2009 Springer Berlin Heidelberg.