December 2011
Artificial neural network model to assess the impacts of land development on river flow
Some types of land development can be associated with increased impervious area that causes increase in surface runoff and decrease in ground water recharge. Both of these processes can have large-scale ramifications through time. Increased runoff results in higher flows during rainfall events. On the other hand, groundwater recharge decreases due to increase impervious surfaces and decrease rate. Hence, there is a need...
December 2011
Thermosyphon solar water distiller of cement and aluminum absorber with auxiliary condenser
Two modifications of solar water distillers using cement and aluminum absorbers are presented experimentally. The first modification uses separated condenser to purge vapor from the cement absorber distiller to increase the condensation, while second modification uses a plate thermosyphon charged with acetone installed on the bottom of the water basin in the aluminum absorber distiller to increase input energy to the...
December 2011
Very low frequency - electromagnetic (VLF-EM) and Offset Wenner resistivity survey of spring sources for groundwater development
Geophysical mapping involving VLF Electromagnetic profiling along seven profiles, ten Offset Wenner and two azimuthal soundings were employed in the study of perennial spring sites at Iloyin community in Akure metropolis, southwest Nigeria. Geophysical methods are useful in mapping areas of natural water resource for groundwater abstraction or construction of containment such as dam or fishpond. Linear inversion of the...
December 2011
Evaluation of water quality in Abeokuta, Southwest Nigeria
Groundwater is an economic resource and more than 85% of the public water for consumption in Nigeria is obtained from groundwater. This source of water is of great use for domestic, industrial, and agricultural purposes. Groundwater in Abeokuta is largely derived from the aquifers within coastal plain. The water in this formation is however not always suitable due to urban waste disposal and sea water intrusion. Water...
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