December 2011
Management of water resources in South Africa: A review
In South Africa, there are many challenges regarding water management. Inadequate rainfall, may contribute to mismanagement, hence political breakdowns and racial groups do also contribute to the problem. To list some of the major challenges for effective management are: limited physical resources, a long cycle of inadequate rainfall, a rapid growing population, and stagnant...
December 2011
Diversity of selective and non-selective fishing gear and their impact on the White Nile River, Khartoum State, Sudan
This survey was conducted in Al-Kalakla Fishery (KF) and Jabel Awlia Dam Fishery (JADF) in the White Nile River, Khartoum state to identify the selective and non-selective fishing gear. The results showed the selective fishing gear represented by gill-nets and seine nets (beach nets) in both fisheries with clear variation in use. In KF, fixed nets were dominant (56%) in fishing...
December 2011
Tillage effects on physical qualities of a vertisol in the central highlands of Ethiopia
In the highlands of Ethiopia, tillage methods and frequency affect drainage, soil erosion, moisture conservation, weeding and harvesting of crops. This is through their effects on soil physical, chemical and biological qualities. In this study, four tillage methods for land preparation, “broad bed and furrows”,” green manure”, “reduced tillage “and...
December 2011
Effect of lead acetate administered orally at different dosage levels in broiler chicks
The project was conducted to evaluate the effect of lead administered as lead acetate at different dosage levels via drinking water in broiler chicks. Thirty-five healthy chicks were divided into seven groups (five chicks each) and one group was kept as un-medicated control. Groups A, B, C, D, E and F were medicated with lead acetate in a single dose at a rate of 80, 120, 160, 200,...
December 2011
Characterization and analysis of medical solid waste in Osun State, Nigeria
This paper reports the study of quantum and characterization of medical solid wastes generated by healthcare facilities in Osun State. The work involved administration of a questionnaire and detailed studies conducted on facilities selected on the basis of a combination of purposive and random sampling methods. The results show that the facilities are well spread among the 30 Local...
December 2011
Terrestrial gamma dose rates and physical-chemical properties of farm soils from ex- tin mining locations in Jos-Plateau, Nigeria
The result of the decades of commercial tin mining activities left a legacy derelict landscapes and impoverished agricultural farm lands in the Jos, Plateau Nigeria. This situation is largely seen to impede environmental, agricultural sustainability and development in the area. It is the purpose of this study to provide a better perspective on the high radioactivity area in Jos Plateau and its implication on...
December 2011
Pedological perspective of gully erosion sites within Kendu escarpment-Sondu Miriu Region, West Kenya
Gully erosion is a common feature in western Kenya, rendering large expanses of otherwise arable land uncultivable and uninhabitable. Gully erosion in the area was classified into two types: the Awach-type and the Sondu-type. The current study aimed at providing insight into physical and chemical properties of soil that promote soil erosion and determine the gully formation type. Field studies were conducted...
December 2011
Adsorption of Arsenite onto Kemiron
This study investigated the effect of pH and coexisting ions on As(III) adsorption using batch experiment and discovered that pH strongly influenced As(III) adsorption. However, differences in background ionic strengths of 0.001 N NaNO3 and 0.1 N NaNO3 had no effect on the sorption trend. The isotherms followed Freundlich model with Kf of 27.91, 35.67, and 43.76 (mg/g)(L/mg)n...
December 2011
Groundwater quality mapping using geographic information system (GIS): A case study of Gulbarga City, Karnataka, India
Spatial variations in ground water quality in the corporation area of Gulbarga City located in the northern part of Karnataka State, India, have been studied using geographic information system (GIS) technique. GIS, a tool which is used for storing, analyzing and displaying spatial data is also used for investigating ground water quality information. For this study, water samples...
December 2011
Development of conceptual groundwater flow model for Pali Area, India
Development of representative conceptual groundwater flow model is an important step before translating it into a numerical model. In this paper, a methodology for development of conceptual groundwater flow model has been presented in which spatially distributed values for groundwater recharge has been utilized instead of lump sum average values of recharge normally obtained by water budgeting method. The...
December 2011
Assessment of water quality in Ahor Lake - Ghana
In the bid to boost the tourism industry, West Akyem Municipal Assembly identified Lake Ahor, a manmade lake as a potential tourism site in the municipality. However, the quality of the water is not known hence the assessment of the physical, chemical and bacteriological characteristics of the lake. A total of twelve samples of water from the lake were collected in June 2011 and were subjected to physical,...
December 2011
Growth response of natural phytoplankton to enrichment of urea and other forms of dissolved nitrogen
The Broadwater of Myall Lakes, NWS Australia is brackish water which has a high variation in water quality in particular salinity and nutrient concentration. In these experiments, we determined the growth and species assemblages of natural phytoplankton community exposed to nutrient enrichment. Laboratory incubation condition was used to measure 10 days biomass and group-specific...
December 2011
Comparison of the spatial and temporal variability of drought indices in Somalia and Lake Chad Basin
The science and dynamics underlying drought is complex, yet understandable if approached carefully using scientific method. In this paper, scientific perspective was applied to explain and compare drought indices in Somalia and Lake Chad Basin (LCB). Geographic information system (GIS) was used to analyze similarities and differences of locational attributes of temporal and spatial...
December 2011
Using bamboo (Bambusa vulgaris) as a field drainage material in Nigeria
Bamboo (Bambusa vulgaris) one of the most widespread member of its genus, was used as field drainage material in Akure, Nigeria. Pre-determined sizes of bamboo with uniform lengths and diameters were installed as sub-drains in agricultural field for drainage purposes, especially in developing countries like Nigeria. Soil properties such as the moisture content, bulk density, specific gravity and...
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