When sorry is not an option: CSR reporting and ‘face work’ in a stigmatised industry – A case study of Barrick (Acacia) gold mine in Tanzania

This paper investigates how a stigmatised company mobilised accounting, particularly CSR reporting, to manage a crisis of legitimacy and spoiled identity following a series of social and environmental crises. Specifically, it uses Goffman’s (1959, 1963) writings on stigma and presentation of self and Benoit’s (1995) image restoration theory to explore how a large mining company in Tanzania used various strategic responses in striving to distance and dissociate itself from the attached ‘stigma’. The evidence shows that, in response to attacks from pressure-group organisations, rather than apologising for the social and environmental crises, the company was preocupied with ‘defensive stigma management’ strategies, including denial and refocusing attention, evading responsibility, image bolstering, excuses and dissociation. Drawing on our findings, we argue that, rather than making the effects of stigma more visible, accounting and CSR disclosures were mobilised to conceal the threats of stigma, manage the legitimacy crisis and repair spoiled identity. This study moves beyond the current focus on legitimacy in the extant CSR reporting literature, by bringing in the concept of organisational stigma to examine stigma management strategies implemented by a company operating in a stigmatised industry to avoid, reduce or minimise its audiences’ disapproval

A Hierarchical Clustering Approach for the Creation of a Simple Semantic Web Application

The goal of the Semantic Web is to develop enabling standards and technologies designed to receive more exact results when searching for information, and to help machines understand more information on the Web so that they can support richer discovery, data integration and navigation. This can be achieved if there is a common vocabulary for a set of domains. Information is published using standard vocabulary. This study explores the processes of creating a taxonomy for a set of journal articles using hierarchical clustering algorithm. 100 journal articles that cut across different fields were downloaded from the internet. These served as sample data. These journal articles were serialized, stemmed and tokenized. Term frequency was calculated for each journal article.  Some representative terms were selected from each journal article and similarity matrix was generated for the entire journal articles. Complete hierarchical clustering was used to create a cluster of the articles. JavaTree view program was used to view the dendrogram of the cluster. It was observed that the articles cluster around their subject, subject area, field of study, area of application, journal type, author, place of case study. This demonstrated that journal articles have properties on a taxonomy, could be created as a basis for a semantic web. Keywords: Semantic web, clustering, taxonomy, similarity, document collection

Short-Term Toxicological Evaluation of AnacardiumOccidentale Oil in Albino Rats

Anacardium occidentale L. nut oil was characterized after which 5% of it was incorporated in the feed formulation for albino rats. Two diets were formulated; one of these diets had 5 % A. occidentale oil (test diet) while the other had 5% of groundnut oil as a representative of conventional edible oil (control diet).  Proximate analysis result indicated that the nut comprises of 5.82 ± 0.16% moisture, 25.54 ± 0.25% protein, 6.28 ± 0.02% crude fibre, 42.52 ± 0.45% fat, 2.90 ± 0.09% ash and 16.97 ± 0.84% carbohydrate.  A. occidentale nut was found to be rich in potassium and magnesium.  Physicochemical analysis of cashew nut oil gave 22.03 ± 0.04 mgKOH/g acid value, 22.03 ± 0.40 g/100g iodine value, 1.96 ± 0.23 mgKOH/g free fatty acid, 97.98 ± 0.99 mgKOH/g saponification value, 2.96 ± 0.59 peroxide value and 1.64 ± 0.02 refractive index.  Fatty acid analysis of A. occidentale nut oil showed that it has high level of unsaturation (77.5754%).  This is evident from the values obtained for oleic acid (61.02%), linoleic acid (15.34%) and linolenic acid (0.13%). There was weight gain by the rats during the feeding period of eight weeks and no mortality was recorded. Haematological and biochemical parameters were investigated for in the test and control rats and the results obtained revealed no adverse effect on the rats’ blood.  The cholesterol level in the test and control rat tissues was not significantly different at p<0.05.  The result of the histopathology of some of  the rat tissues showed no visible lesion.  A. occidentale nut oil might be suitable for edible purposes. Key words:A. occidentale, fatty acid, proximate composition, toxicolog

Impact of Wastewater on Surface Water Quality in Developing Countries: A Case Study of South Africa

Wastewater effluents are major contributors to a variety of water pollution problems. Most cities of developing countries generate on the average 30–70 mm3 of wastewater per person per year. Owing to lack of or improper wastewater treatment facilities, wastewater and its effluents are often discharged into surface water sources, which are receptacles for domestic and industrial wastes, resulting to pollution. The poor quality of wastewater effluents is responsible for the degradation of the receiving surface water body. Wastewater effluent should be treated efficiently to avert adverse health risk of the user of surface water resources and the aquatic ecosystem. The release of raw and improperly treated wastewater onto water courses has both short‐ and long‐term effects on the environment and human health. Hence, there should be proper enforcement of water and environmental laws to protect the health of inhabitants of both rural and urban communities. This study reports major factors responsible for the failing state of wastewater treatment facilities in developing countries, which includes poor operational state of wastewater infrastructure, design weaknesses, lack of expertise, corruption, insufficient funds allocated for wastewater treatment, overloaded capacities of existing facilities, and inefficient monitoring for compliance, among others

Investigation on the Chemical Analysis of Reinforcing Steel Rods Produced from Recycled Scraps

Steel being a part of everyday life of an individual, it is incumbent to study its chemical constituent so as to enable production of reliable steel bars. In this work the chemical constituent of reinforcing steel bars manufactured from scraps and imported steel bars is investigated. The percentage chemical composition was related to the available standards. It is found that all the elements follow a consistent pattern, however, graphically, the carbon found present in the 12mm diameter steel bars conform more with the standard compared to the carbon contents of the16mm steel bars. Keywords: Steel bar, Elements, Scraps, Chemical Composition.

Assessment of Heavy Metals in Landfill Leachate: A Case Study of Thohoyandou Landfill, Limpopo Province, South Africa

Landfilling of solid wastes has gained increasing acceptance due to the ease of disposal. However, such activity has consequences if the landfill site is not designed according to specification or does not have a leachate liner and collection system. Leachate possesses potential risk to surface and groundwater aquifer within the area surrounding the landfill site. The aim of this chapter is to assess the physicochemical parameters and heavy metal levels in leachate generated from a periurban landfill site situated in Thohoyandou, Limpopo Province, South Africa. Physicochemical parameters were measured onsite using standard methods, while heavy metals were analyzed with flame atomic absorption spectrometer (FAAS) after nitric acid digestion. pH, conductivity and turbidity values ranged from 6.97 to 7.68, 426 to 2288 μS/cm and 12.78 to 295.5 NTU, respectively. Most levels of the determined heavy metals exceeded the effluent discharge guideline limit of South African Department of Water Affairs. This could potentially spike their levels in surface and groundwater. Adequate measures should be put in place to manage the leachate generated from landfill sites

Combined administration of Spondias mombin and Ficus exasperata leaf extracts stall Indomethacin-mediated gastric mucosal onslaught in rats.

Background: Despite the rapidly changing concept of gastric ulcer management from conventional vagotomy, H2 receptor antagonists and antacids to proton pump inhibitors, gastrointestinal toxicity remains an impediment to their application in clinical practice. Combined administration of two or more plant extracts with therapeutic efficacy may proffer solution to this menace. This study investigated the combined gastroprotective effects of Spondias mombin and Ficus exasperata leaf extracts against indomethacin-induced gastric ulcer in rats.Materials and Methods: Thirty rats were randomized into six groups of five animals each and ulceration was induced by a single oral administration of indomethacin (30 mg/kg body weight). Ulcerated rats were orally administered with Spondias mombin, Ficus exasperata at 200 mg/kg body weightand esomeprazole (a reference drug) at a dose of 20 mg/kg body  weight once daily for 21 days after ulcer induction. At the end of the experiment, gastric secretions and antioxidant parameters were evaluated.Results: We observed that the significantly increased (P < 0.05) ulcer index, gastric acidity, malondialdehyde level and pepsin activity were markedly reduced following co-administration of S. mombin and F. exasperata. The extracts also effectively attenuated the reduced activities of superoxide dismutase and catalase as well as pH, mucin content and reduced glutathione level in the ulcerated rats.Discussion and Conclusion: These findings are indicative of gastroprotective and antioxidative attributes of the two extracts which is also evident in the % protective index value obtained. The available evidences in this study suggest that the complementary effects of S. mombin and F. exasperata proved to be capable of ameliorating indomethacin-mediated gastric ulceration and the probable mechanisms are via antioxidative and proton pump inhibition.Key words: Esomeprazole; Gastroprotective; NSAIDS; Proton pump inhibitor; Ulceration

Household Hazardous Waste Management in Sub‐Saharan Africa

Household hazardous wastes (HHWs) have not been given serious attention in sub‐Saharan Africa. There is little or no information on HHWs in many developing countries of the world. This is regardless of the fact that they are very toxic and contain constituents which are persistent in nature. Once released into the environment, they can remain stable for exceptionally long periods of time. They have the potential to be harmful to public health and the environment if not handled, used, and disposed properly. This study reports the level of knowledge and management of HHWs in three tertiary institutions in sub‐Saharan Africa. Several factors were found to be responsible for poor management of HHWs. These include lack of awareness, inadequate treatment technologies, financial constraints, lack of realistic policies and legal frameworks, and unplanned settlements, among others

Health Risk Assessment of Heavy Metals on Primary School Learners from Dust and Soil within School Premises in Lagos State, Nigeria

This chapter is aimed at evaluating learner’s health risk based on the concentration of toxic metals (Pb, Cr, Cd and Mn) in soil/dust from playgrounds/classrooms in selected primary schools in Lagos State. Samples were divided into four groups based on the density of the locations. Concentration of toxic metals in samples were determined by Graphite Furnace Atomic Absorption Spectrophotometer (GFA-EX7) technique after microwave digestion. The result showed that some of the heavy metals in the soil were higher than permissible limits set by DPR, FEPA and WHO. The soil/dust were contaminated with Cr, Cd and Pb but Mn was within permissible limit. Due to exposure to playground soil and classroom dust, hazardous index (HI) for non-carcinogenic/carcinogenic risk in children was estimated. HI value indicated that the heavy metal pollution may pose no obvious non-cancer health risk to children learning in such schools. However, children via ingestion pathway are exposed to the greatest carcinogenic risk followed by the inhalation pathway. The cancer risk for learners was found to be 3.2 × 10−2 (1 in 31 individuals). Hence, there is need for local environmental authorities to be warned about the potential health risks caused by heavy metals in playground/classroom