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Bioaccumulation of platinum group metals in dolphins, Stenella sp., caught off Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DK EssumangPlatinum group metals (PGMs) concentrations were measured in the tissues= of dolphins (Stenella sp.) caught along the Ghanaian coastline. Tissues from specimens caught by fishermen from Dixcove, western Ghana, were analysed in 2006 for palladium (Pd), platinum (Pt) and rhodium... -
A simplified control scheme for electric vehicle-power grid circuit with DC distribution and battery storage systems
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kabeya Musasa --- Department of Electrical and Electronic Engineering Science, South Africa Musole Innocent Muheme --- Department of Electrical and Electronic Engineering Science, South Africa Nnamdi Ikechi Nwulu --- Department of Electrical and Electronic Engineering Science, South Africa Mammo Muchie --- DST/NRF SARChI Research Professor on Science, Technology and Innovation Studies, Tshwane University of Technology, Pretoria, South AfricaThe direct current (DC) system is becoming the major trend for future internal power grid of electric vehicles (EVs). Since DC power grid system has a different nature to conventional alternating current (AC) grid system, appropriate design of the controller... -
Math function-based controller combined with PI and PID applied to ultracapacitor based solar-powered electric vehicle
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Raghavaiah Katuri --- , India Srinivasarao Gorantla --- , IndiaIn the view of environmental concerns, the usage of electric vehicles (EVs) has increased more drastically than internal combustion (IC) engine-based vehicles. To diminish the load on the battery at peak power requirement, Hybrid Energy Storage System (HESS) was made...