REVERSE LOGISTICS AND MANAGEMENT OF WASTE PRODUCTS: THE NIGERIAN MANUFACTURING FIRMS EXPERIENCE

Purpose. The paper explores reverse logistics activities such as product return, reuse of materials, and waste disposal impacts on the management of waste products in the Nigerian manufacturing companies. This is with a view to examining the awareness of reverse logistics to the management of waste products in Nigeria and determines the importance of reverse logistics activities and process to the management of waste products of Nigeria manufacturing firms. Methodology. Using a cross-sectional survey research design, 300 staff of selected manufacturing firms that deal with waste product were selected in Lagos and a well-structured and validated questionnaire was administered. From this, 250 copies were returned, while 246 were valid for the purpose of analysis. Data generated were analysed using descriptive statistics, analysis of variance test of significance and Friedman rank test. Findings and Implication. The findings revealed that the respondents convinced that their reverse logistics activities arising from return of goods may be as very important to developing efficient and effective management of waste products of Nigeria manufacturing firms. The results also indicates that reverse logistics is highly significant in achieving the organizational goals (p < 0.05), company\u27s future success (F = 8.18, p < 0.05), the functioning of a manufacturing company (p < 0.05) and strategically positioning the company. The study therefore recommends the need for a growing focus on various sections of reverse logistics processes in waste products’ management of manufacturing company in order to achieve organisational goal and enhances sustainable business performance

Mean platelet volume and platelet counts in type 2 Diabetes: Mellitus on treatment and non-diabetic mellitus controls in Lagos, Nigeria

Introduction: The Mean platelet volume and platelet counts are indicators of thrombotic potentials, and risk factors for microvascular complications in diabetics. This study aimed to establish variations in platelet counts and mean platelet volume in type 2 diabetic patients on treatment and non-diabetic controls. Methods: This was an unmatched case-control study involving 200 participants consisting of 100 diabetics and 100 non-diabetic controls. Four and half milliliters of blood was collected from diabetics and non diabetic controls into EDTA anticoagulant tubes. Full blood count was performed using the Sysmex KN-21N, (manufactured by Sysmex corporation Kobe, Japan) a three- part auto analyzer able to run 19 parameters per sample including platelet counts and mean platelet volume. Results: The mean fasting blood sugar for the diabetics was 147.85±72.54 mg/dl and the controls 95.20±30.10 mg/dl. The mean platelet count for the diabetics was 235.29±76.81*109/L and controls, 211.32±66.44*109/L. The mean platelet volume, for the diabetics was 8.69±0.67 fl and the controls, 8.91±0.80 fl. There was a statistically significant difference in platelet counts of diabetics and healthy controls p =0.038 while none existed between the mean platelet volume in diabetics and healthy controls p=0.593. Conclusion: This study revealed a higher mean platelet count for diabetics on treatment than for non diabetic controls while mean platelet volume was lower in cases than controls. However, both parameters in diabetics on treatment were within the normal reference range for healthy individuals

IDENTIFICATION OF TSUNAMIGENIC EARTHQUAKE ZONES IN OCEANIC RIDGES AND TRENCHES

Tsunamigenic earthquakes have been known for their near and far field catastrophic impacts on coastal areas near oceanic ridges and trenches, as well as near tectonic faults in closed and semi-enclosed seas. Not all regions of oceanic ridges and trenches are tsunamigenic earthquake zones, but knowledge of the weighted sum of released earthquake energy and of the Gutenberg-Richter relation of the „a‟ and „b‟ parameters are needed to better identify them as to their potential for tsunami generation. The present analysis was undertaken in order to better identify tsunamigenic zones near oceanic ridges and trenches in the Mid-Atlantic, in the Pacific, in Chile, in Japan, near the Aleutians and along the Peru-Chile trench. The weighted sum of earthquake energy released and of the Gutenberg-Richter relation parameters were evaluated to identify tsunamigenic earthquake zones along these locations. The present analysis of the Gutenberg-Richter relation of the „a‟ and „b‟ parameters indicates that tsunamigenic earthquakes do not occur frequently along the Aleutian Trench, although the historic record supports that destructive tsunamis have occurred along this region in the past. Of the oceanic ridges, the results of the present analysis indicate that the Mid-Atlantic Ridge is the most active tsunamigenic zone, while of all the oceanic trenches, the Japan Trench is the most active

REVERSE LOGISTICS AND MANAGEMENT OF WASTE PRODUCTS: THE NIGERIAN MANUFACTURING FIRMS EXPERIENCE

Purpose. The paper explores reverse logistics activities such as product return, reuse of materials, and waste disposal impacts on the management of waste products in the Nigerian manufacturing companies. This is with a view to examining the awareness of reverse logistics to the management of waste products in Nigeria and determines the importance of reverse logistics activities and process to the management of waste products of Nigeria manufacturing firms. Methodology. Using a cross-sectional survey research design, 300 staff of selected manufacturing firms that deal with waste product were selected in Lagos and a well-structured and validated questionnaire was administered. From this, 250 copies were returned, while 246 were valid for the purpose of analysis. Data generated were analysed using descriptive statistics, analysis of variance test of significance and Friedman rank test. Findings and Implication. The findings revealed that the respondents convinced that their reverse logistics activities arising from return of goods may be as very important to developing efficient and effective management of waste products of Nigeria manufacturing firms. The results also indicates that reverse logistics is highly significant in achieving the organizational goals (p < 0.05), company's future success (F = 8.18, p < 0.05), the functioning of a manufacturing company (p < 0.05) and strategically positioning the company. The study therefore recommends the need for a growing focus on various sections of reverse logistics processes in waste products’ management of manufacturing company in order to achieve organisational goal and enhances sustainable business performance

CD4 Count Pattern and Demographic Distribution of Treatment-Naïve HIV Patients in Lagos, Nigeria

Background. CD4 count measures the degree of immunosuppression in HIV-positive patients. It is also used in deciding when to commence therapy, in staging the disease, and in determining treatment failure. Using the CD4 count, this study aimed at determining the percentage of HIV-positives who require antiretroviral therapy at enrollment in an HIV treatment and care centre. Methods. The Baseline CD4 count, age and gender of 4,042 HAART-naïve patients, who registered between December 2006 and June 2010, at Lagos State University Teaching Hospital, Ikeja, were retrospectively studied. Data were analyzed using SPSS version 16.0 (Statistical Package for Social Sciences, Inc., Chicago, Ill). Results. Patients consisted of 2507 (62%) female and 1535 (38%) males. The mean age of males was years and that of females years. Overall, the mean CD4 count was of  cells/mm3. The mean CD4 count of males was  cells/mm3 and that of females cells/mm3. A total of 72.3% males, 64.3% females and 67.4% overall registered patients had CD4 count 500 cells/mm3 at registration. Conclusion. Females account for more than half of registered patients in HIV clinic and have a relatively higher CD4 count than males. About three-quarter of HIV positives require antiretroviral therapy at registration

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