December 2009
From Congo to Copenhagen
December 2009
Fatigue and rutting strain analysis of flexible pavements designed using CBR methods
The layered elastic analysis of pavements designed using three known CBR methods; the Asphalt Institute, the National Crushed Stone Association and the Nigerian CBR methods were carried out to evaluate their fatigue strain and rutting deformation characteristics. The elastic properties of the materials were determined. Structural thickness requirement of the pavements were carried out using their respective...
December 2009
Elemental analysis of atmospheric aerosols in Gaborone
Aerosols are mixture of solid and liquid particles and have considerable variation in terms of their chemical composition and size. In this study the elemental composition of aerosol particles in the atmosphere of a city, Gaborone, was carried out. The elemental analysis was done by environmental scanning electron microscope (ESEM). The results clearly show that the composition of the particles observed was...
December 2009
Assessment of groundwater contamination in an industrial city, Sialkot, Pakistan
Contamination of groundwater due to heavy metals is one of the most important concerns that have received attention at regional, local and global levels because of their toxicological importance in ecosystems and impact on public health. The present study was designed to assess the quality of groundwater in relation to heavy metal pollution and its implication on human health. The groundwater quality of...
December 2009
Physico-chemical characteristics of Anopheles breeding sites: Impact on fecundity and progeny development
Mosquitoes exploit almost all types of aquatic habitats for breeding. Prevailing physicochemical parameters in these habitats are important factors for survival and development of mosquito. Here, six water samples from Atlantic Ocean, River, well, distilled (control), rain and borehole water were used to culture Anopheline eggs collected from pure bred of Kisimu species. The development of eggs to 1st, 2nd, 3rdand...
December 2009
Effect of atrazine (Herbicide) on blood parameters of common carp Cyprinus carpio (Actinopterygii: Cypriniformes)
In the present study an attempt was made to investigate the acute toxicity of atrazine (ATR) a herbicide on an economically important fish, Cyprinus carpio. In which, 24 h median lethal concentration (24 h LC50) of herbicide, atrazine to C. carpio was 18.5 ppm. Due to fish exposure to 24 h LC50 of atrazine for 24 h, red blood cells (RBCs)...
December 2009
Waste management in healthcare establishments within Jos Metropolis, Nigeria
Poor management of healthcare waste exposes health workers and the public to the toxic effects of wastes generated from health establishments. The disposal of these wastes could also lead to environmental problems if not done properly. This study has assessed the waste management practices in hospitals and compared same with international standards. A survey was carried out in six major hospitals in Jos...
December 2009
Effect of gasoline diesel fuel mixture on the germination and the growth of Vigna unguiculata (Cowpea)
The effects of gasoline fuel/diesel mixture on the germination of seeds of Vigna unguiculata, the survival of the seedlings and the growth of the plant were evaluated in this study. It involved adding 10, 20, 30, 40 and 50 ml of mixture of equal proportions of the two petroleum products to 5000 g of soil and sowing seeds of the V. unguiculata in the soils after which the survival and the growth...
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