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Lithostructural framework and rare metal (Ta-Nb-Sn-Li-Be) mineralisation in lepidolite from the Ijero-Aramoko pegmatite field, south-western Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Oluwatoyin O Akinola --- Department of Geology, NigeriaA lithological framework and petrochemical features relating to Ta-Nb-Sn-Li-Be mineralisation in lepidolite from the Ijero-Aramoko pegmatite field, south-western Nigeria were investigated. Systematic geological mapping revealed that the pegmatite occurs as steeply inclined intrusive bodies in a basement of gneisses and... -
A novel system dynamics’ model for the motors of a sectoral innovation system–simulating and policymaking
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sayyed Mohsen Azad --- Department of Industrial Engineering, Iran Seyed Hassan Ghodsypour --- Department of Industrial Engineering, IranIn recent years, science and technology policymaking has been taken into consideration by many researchers. One of the most important fields of this policymaking is innovation systems’ management; which is divided into national, regional, sectoral and technological innovation systems. In...