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A high absorptance (>0.90) is an essential factor in the efficient use of a .solar collector. However, equally important is the need to keep the emittance as low as possible (<0.20). Both the.absoptance and emittance depend on the optical properties of the coating and the substrate. The solar...

One's perception and attitude towards Mathematics affects their conception of how it should be learned and presented (Ernest, 1998). This study was a survey of high school pupils' perceptions and attitudes towards Mathematics in the Copperbelt Province of Zambia. Pupils' perceptions and attitudes...

The study focused on the perceptions and socioeconomic repercussions of irrigating vegetables using treated wastewater in Garden Compound in Lusaka. This qualitative study was based on stratified sample population of forty (40) comprising wastewater vegetable irrigators and non wastewater...

Many physical problems are studied through mathematical equations especially differential equations. For example, problems in mechanics, electricity, aerodynamics, to mention just a few, use differential equations. While it is true to say that physical sciences and tech¬nology are the two main...

Syenitic rocks in Eastern Zambia are represented by both oversaturated quartz bearing types and undersaturated nepholine-sodalite varieties.The ,Sinda syenite intrusions are oversaturated potassics which form a petrogenetically related N-S trending string of intrusions at the eastern margin of...

The purpose of this dissertation was to evaluate the effort, efficiency and performance of private water utilities to improve service delivery in Chawama Township, by Lusaka Water and Sewerage Company (LWSC). 200 household heads who were selected using systematic sampling, were interviewed in...

This study was undertaken to develop an optimum production plan for an underground mine using Renco Mine, an underground gold Mine in Zimbabwe,as a case study.A detailed structural analysis of the orebody's grade distribution has been done to establish technical parameters for production...

Tine cyanidation process for extracting precious metals (gold and silver) from the anode slimes was investigated. The recovery of these metals from cyanidation solution by adsorption on activated cai-bon has been studied. Ttiis was to assess the cyanidation and adsorption process as a potential...

All sheet metal forming processes occur after permanent plastic deformation resulting in the material properties changing and therefore it is necessary to determine the extent to which a material can further be deformed for subsequent forming operations. Traditionally, experimental trial and...

This dissertation considers the single quantum pair annihilation of positrons with bound K-shell electrons in heavy atoms. It gives numerical calculations of the total cross section. By means of the method due to Basbas et a/.14, the binding-energy effect and its contribution to SQA cross...