Past Issue

Background: Cervical cancer is the commonest genital tract cancer worldwide, and has a high burden of morbidity and mortality in developing countries of which Nigeria is part of. Human immune deficiency virus (HIV) increases the risk of dysplastic changes in the cervix leading to increasing premalignant and malignant lesions of the cervix. Pregnant HIV positive women may be at a higher risk of having pre-invasive cervical lesions. Pregnancy presents an opportunity to screen women of reproductive age for the premalignant lesions of the cervix using Pap smear.

Mineral coal bottom ash, a residue from power plants, is an under-exploited industrial waste in Niger despite its interesting properties, notably its low density. This study aims to add value to this material by developing an economical, high-performance composite combining bottom ash powder (≤80 microns) and construction plaster, intended for interior applications such as false ceilings, wall coverings and decorations. Mortars with different proportions of clinker (0-70%) were formulated to assess their mechanical strength and thermal conductivity.

For better watershed control, protection, water resource planning and seabed development; it is important to aquire master the its physical environment. The aim of this study is to understand the hydrological functioning of the watershed through its physical environment in order to successfully manage it. The data from the 30 m resolution Shuttle Radar Topographic Mission (SRTM) and the 1/200,000 scale urban mapping of the study area were used. The description of the watershed showed that it is an elongated and covers an area of 498.78 km2.

The aim of the work was to produce a geological and structural map of the Ouaddai massif using landsat and radar data. We used landsat-8 images to extract the lithological map (colour composition and ratio bands) and PALSAR DEM radar to extract the lineament map (using different filters). For the radar sensor, a total of 2188 lineaments were detected and extracted, with two main rock fracturing directions (ESE-WNW (90° to 115°) and NE-SW (45° to 65°)).

The present work aims to determine the influence of the nature of the combined materials on the measurement of the conductivity of an aqueous ionic solution. In this study, 4 types of electrodes (iron (Fe), copper (Cu), aluminum (Al) and lead Pb) were used. Correlation curves, current intensities and the degree of mineralization of the solution were layout. The correlation coefficients varying between 0.9877 and 1 indicate a very good correlation between the degree of mineralization of the ionic solution and the intensity of the measured direct current and the reliability of the method.

The aim of the study was to analyse the genetic parameters of age at first calving and calving interval in the Kuri cattle breed, using data from 292 cows from 15 bulls born at the Sayam research station in Niger and monitored over the period 1994 to 2011. Genetic parameters were determined by the mother-daughter regression method and by the variance component method using a father mixed-effects model based on restricted maximum likelihood. The effects of season and year of calving were significant (p < 0.05) on the two reproductive parameters studied.

Background and objectives: Controlling coronary artery plaque regression is essential for the treatment of cardiovascular diseases, as it directly influences patient outcomes. Although advancements have been made in imaging and pharmacotherapy, significant challenges remain in accurately assessing plaque changes and managing associated treatment side effects.

With this study, we intend to contribute to the promotion of micro hydroelectric power plants for individual, family and community use. We pay a particular attention to sustainable and affordable solutions that could be used in isolated sites with relative less investment. For this purpose, we demonstrate the possibility of generating electricity from hydraulic energy of water flow in domestic taps and agriculture irrigation valves.

Loquat seed starch (Eriobotrya japonica Lindl.) was isolated, characterized, and subjected to physical modifications using ultrasound techniques at amplitudes of 40%, 50%, 60%, and 70%. Proximate analysis of the native starch revealed the following composition: moisture content (5.48%), lipid content (0.19%), protein content (3.56%), dietary fiber content (4.51%), crude fiber content (1.37%), and carbohydrate content by difference (84.77%). Thermogravimetric analysis (TG/DTG) identified three main mass loss events for all samples.

The assessment of resilience is the core of any governance and risk management analysis for shocks and crises. This assessment is generally dependent on similarity measurement for the identification of patterns and relationships between different individuals or groups of individuals within a given community. One of the difficulties in studying social resilience processes is the lack of appropriate analytical tools that take into account the dimensions of resilience.