Modeling the Migration of 2,6-di-tert-butyl-p-cresol from Plastic Bags into attiéké (Cassava Couscous) from Physico-Chemical and Morphometric Parameters
Mananga Olivier Simon Kombo,
Mamadou Guy-Richard Kone,
Yapo Habib Kpidi,
Agnes Essoh Jean Eudes Yves Gnagne,
Tiama Guy Nicaise Ballet,
Ossey Bernard Yapo
Issue:
Volume 9, Issue 1, February 2020
Pages:
1-9
Received:
8 January 2020
Accepted:
20 January 2020
Published:
4 February 2020
Abstract: Attiéké, couscous made from fermented cassava, is a staple food in Côte d'Ivoire packaged in polythene plastic bags. The antioxidant BHT was analyzed both in the plastic bags and in the attiéké at different temperatures and at different levels inside the attiéké ball. A modelling study was conducted to determine a quantitative relationship between the BHT concentration in the attiéké and the descriptors which are the concentration of BHT in the plastic bag, grain size, depth (from the surface to inside the attiéké ball), duration and conditioning temperature of the attiéké in the plastic bags. BHT, initially not detected in the attiéké, migrates there depending on the packaging temperature of this commodity and certain parameters. This study was conducted by using multiple linear regression. A quantitative model was proposed. The statistical indicators revealed effective predictions with the determination coefficient equal to 0.92 and the standard error equal to 0.191. The value of the Fischer test was 170.250 and the cross-validation determination coefficient was 0.9136. The results obtained suggest that the combination of the descriptors used could be useful in predicting attiéké contamination by plastic bags. Temperature is the most important descriptor for predicting the BHT concentration in the attiéké with a normalized coefficient equal to 0.846 followed by depth (from the surface to inside the attiéké ball) (-0.822).
Abstract: Attiéké, couscous made from fermented cassava, is a staple food in Côte d'Ivoire packaged in polythene plastic bags. The antioxidant BHT was analyzed both in the plastic bags and in the attiéké at different temperatures and at different levels inside the attiéké ball. A modelling study was conducted to determine a quantitative relationship between ...
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Spatial Analysis of Human Settlement Expansion Rate in Nigeria: A Case Study of Akure Per-Urban Locations
Oguntade Aanuoluwapo Aderonke
Issue:
Volume 9, Issue 1, February 2020
Pages:
10-21
Received:
28 January 2020
Accepted:
18 February 2020
Published:
25 February 2020
Abstract: The purpose of this research is to study the rate of horizontal expansion of human settlement in Akure from 2007 to 2018 with focus on three peri-urban locations that has experienced massive growth in most recent times. Efforts were made to make predictions of possible expansion for the next 20 to 32 years in these areas. To achieve the objectives of this research Google earth images were obtained for all three selected locations for the years 2007 and 2018. For the three locations the same square area was maked out for analysis. The area covered by human settlement for the years 2007 and 2018 was obtained for all three locations using the polygon tool on Google earth. Futher mathematical calculations were done to help determine the rate of horivontal settlements between the two time periods. Calculations were also done to predict the rate of future expansion in all three locations. The results shows that built up area in the three selected locations is rapidly expanding, as a result large vegetation are lost. Predictions show that Akure is tending towards a fully developed conurbation. It concludes by affirming that there is a need to adopt the use of sustainable high-rise mixed-use buildings as a better approach to the current trend of human settlement in Nigeria based on low-rise structures and continuous deforestation to make rooms for new settlements.
Abstract: The purpose of this research is to study the rate of horizontal expansion of human settlement in Akure from 2007 to 2018 with focus on three peri-urban locations that has experienced massive growth in most recent times. Efforts were made to make predictions of possible expansion for the next 20 to 32 years in these areas. To achieve the objectives ...
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