September 2007
Genotyping and NNRTI mutations: where do we go from here as HIV populations get older? A perspective
As genotyping procedures have increasingly become more sensitive and complex, HIV scientists and physicians are finding new clinical approaches to treat compromised patient populations on non-nucleoside transcriptase inhibitor (NNRTI) classes of drugs. Further, as age demographics play a vital role in older populations affected with HIV, understanding phenotype/resistance panels for regimen changes is...
September 2007
Influence of marble and limestone dusts as additives on some mechanical properties of concrete
In this study, some mechanical properties of concrete containing marble dusts (MD) and limestone dusts (LD) were investigated. Seven concrete mixtures were produced in three series with control mixes having 400 kg cement content. These control mixes were modified to 5, 10 and 15 % MD and LD in place of fine sand aggregate. The compressive strengths of concrete were measured for 7, 28, 90 and 360 days and sodium sulphate...
September 2007
The impact of African animal trypanosomosis and tsetse on the livelihood and well-being of cattle and their owners in the BICOT study area of Nigeria
Nasarawa State, and most especially Lafia Local Government Area of the state which is the study area, is an area with huge agricultural potentials. In order therefore to assess the impact of African animal trypanosomosis and its vectors, entomological, epidemiological and questionnaire surveys were carried out within the area covered by the Biological Control of Tsetse Fly Project (BICOT). The project area covers...
September 2007
Effects of different types of water decoctions of fruit of Melia azedarach on glucose induced hyperglycemia, liver transaminases, lipid peroxidation and reduced glutathione in normal albino rats
Four types of extracts were prepared from Melia azedarach fruits. These were methanol extract and three types of water decoctions; urine treated water decoction (UE), milk treated water decoction (ME) and plain water decoction (WE). Different doses of these four extracts were tried in normal rats to estimate the hypoglycemic activity of these extracts against glucose induced hyperglycemia. Most potent doses of...
September 2007
Genotype X environment interaction, stability and agronomic performance of carotenoid-rich cassava clones
Cassava is widely consumed in Africa where malnutrition is rampant; there is, therefore, a major effort to produce micronutrient biofortified cassava. Adoption of such cassava genotypes will largely depend on their agronomic performance, resistance to biotic stresses, and the stability of these traits. The objectives of this study were to (i) evaluate the influence of genotype (G) environment (E), and G x E...
September 2007
Optimization of Nitrogen released and immobilization from soil-applied prunings of Sesbania sesban and maize stover
A glasshouse experiment was conducted using the double-pot technique involving mixtures of low and high quality N sources with the objectives of determining 1) N mineralization and substitution value of high quality organic materials, 2) N immobilization by low quality maize stover, and the subsequent remineralization of immobilized N, and 3) N mineralization from or immobilization by mixtures of high and low quality...
September 2007
Effect of growth media and fertilizer application on biomass allocation and survival of Uapaca kirkiana Müell Arg seedlings
Uapaca kirkiana Müell Arg is one of the few recognized African fruit trees earmarked forconservation and domestication in southern Africa. However, efforts to raise seedlings of this species have been frustrated by the slow growth and high seedling mortality. Therefore, the objective of this study was to assess the effect of potting mixture, soil and foliar fertilizer application on plant...
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