Digital Repository, University of Moratuwa
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A comprehensive platform for developing rural agriculture
To achieve sustainable economic growth of the rural agricultural ecosystem, the infusion of information technology (IT) is imperative. Bringing the growth influencing factors such as, the agro information support systems and the financial management systems into a common IT platform can facilitate continuous growth of the rural community by generating long term revenue streams. In this research, a robust IT based platform is proposed which not only amalgamate the growth factors into a novel common platform but also will provide a window to the local/global markets via its implementation. The proposed solution incorporates domain knowledge of the farmers via a neural network to enhance the decision making when it comes to funding as well as other agro information such as quantity of fertilizer, and crop information
1/8 Factorial study of metal effects on acid neutralization by cement
The acid neutralization capacity of a cement/waste product is important because the integrity of
the monolithic matrix and contaminant precipitation are dependent on the maintenance of alkaline conditions.
A 1/8 fractional factorial experiment was used to selectively examine the main effects of seven pure metal
compounds on strength development and acid neutralization capacity of portland cement paste and to obtain
information regarding interactions between the compounds. The hydration products in a portland cement paste
appear as plateaus in its titration curve. Metal contaminants were found to affect the pH and acid neutralization
capacities of these plateaus, suggesting that they change the hydration products. Cr(NO3)3 and ZnCl2, which
exhibited individual effects and also interacted, caused the predominant effects. Comparison between predictions
by a simple empirical linear model based on these contaminants and acid neutralization capacity of a real
solidified metal plating waste showed that additional factors play an important role in real wastes