October 2009
We face neither North nor South: We face the future
October 2009
Impact of urbanisation on the Mingosso watershed in the Yaounde periurban zone
October 2009
Toxic effect of naphta exposure on respiratory system among workers in the tyre industry
A cross-sectional study was carried out on workers in a tyre manufacturing industry in Malaysia to determine the effects of naphtha exposure on lung functions and respiratory symptoms. Sixty male workers exposed to naphtha and 42 unexposed workers were selected for this study. Personal air monitoring carried out using solid sorbent tubes and low flow pumps (Model: PAS-500 Personal Air Sampler)....
October 2009
Groundwater nitrate pollution in Souss-Massa basin (south-west Morocco)
The objective of our study was to determine the current status of alluvial aquifer in the Souss-Massa basin, where the nitrate pollution of groundwater is being increasing along the last decades. A multi-approach methodology using hydrogeology, nitrate concentrations, irrigation type and oxygen-18 and deuterium data, was carried out to identify the sources of this pollution. According to the spatial...
October 2009
The linkages between land use change, land degradation and biodiversity across East Africa
Land use changes in East Africa have transformed land cover to farmlands, grazing lands, human settlements and urban centers at the expense of natural vegetation. These changes are associated with deforestation, biodiversity loss and land degradation. A synthesis of results of long term research by an interdisciplinary team reveals the linkages between land use change, biodiversity loss and land degradation....
October 2009
Effect of site characteristics on the productivity and economic returns from cassava legume intercropping in Ghana
In a 2-year field study, cassava was intercropped with four legumes (cowpea, pigeon pea, soyabean and Stylosanthes at three locations with different soil and environmental conditions, to determine the effect of site characteristics on the agronomic and economic advantage of the intercrop. The trial was a factorial experiment in a split plot design with three...
October 2009
Evaluation of groundwater resources potential in the Ejisu-Juaben district of Ghana
The increasing stress on freshwater resources due to ever-rising demands and profligate uses as well as growing population of Ejisu-Juaben District is an issue of great concern. The purpose of this study is to make a quantitative estimate of the available groundwater resources in the Ejisu-Juaben district for efficient utilization and management of groundwater resources. The methodology involved the...
October 2009
Groundwater flow modelling in the upper Anga’a river watershed, Yaounde, Cameroon
The Anga’a River watershed is located within the Yaounde IV district, South-east of Yaounde City, Cameroon. The groundwater flow and particle tracking modelling was carried out to determine in detail the groundwater flow and particle migration in the shallow unconfined aquifer of the Upper Anga’a river watershed. The watershed was modelled with a grid of 106 columns x 68 rows with two layers...
October 2009
Removal of chromium and nickel ions from aqueous solution by adsorption on modified coconut husk
The study investigated the adsorption of Cr(VI) and Ni(II) on modified coconut husk (low cost adsorbent) for the remediation of Cr(VI) and Ni(II) from some synthetic industrial waste effluents. The coconut husk was modified by mixing with 0.1 M NaOH and HCl respectively. The effects of varying adsorbent loading, hydrogen ion concentration, contact time and temperature of adsorption were studied....
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