Cross River University of Technology

About: Cross River University of Technology is a education organization based out in Calabar, Nigeria. It is known for research contribution in the topics: Population & Exergy. The organization has 465 authors who have published 507 publications receiving 2705 citations.

Prediction of stature from hand length and breadth – anthropometric study on an adult Cross River State population

Abstract: Introduction: Stature estimation occupies a relatively dominant position in anthropometric research. It is believed that standards for identifying skeleton differ from population to population and the method for one population may not be applicable for another population. Materials and Method: This study was carried out to determine the reliability of hand dimensions in estimating stature in an adult Cross River State population. The subjects comprised 1050 adult indigenes (540 male and 510 female) of Cross River State between the ages of 18 and 45 years drawn from the three senatorial districts South, Central, and North. Results: Stature in male had a mean value of 168.49 ± 5.53 cm whereas in females it was 162.99 ± 5.91 cm. Also, hand length in male subjects was 19.47 ± 2.00 cm while in females, hand length measured 18.35 ± 1.03 cm. In addition, the mean handbreadth in males was 8.47 ± 0.54 cm while in females, handbreadth was 7.91 ± 0.64 cm. Statistical analysis indicated that the difference in hand length and handbreadth between male and female was statistically significant ( P Conclusion: However, hand length was more reliable in estimating stature in both male and female subjects. These results will be of immense benefit to forensic studies and bioanthropology.

Fish composition and abundance in the wetlands of Cross River, Nigeria

Abstract: Environmental parameters and ichthyofauna were investigated over a 2 years period in three regions along the 200 km length of Cross River. The objective of the study was to quantify the relative importance of local environmental conditions prevailing within sampling sites and the composition and abundance of the principal fish species in the upper, middle and lower reaches of the river. Vegetation cover, size of river, flow velocity, water level, temperature, transparency, and food availability explained the observed seasonal and spatial changes in fish abundance. Forty-six species and 28 genera of fish belonging to 16 families were recorded among the 14,466 fish caught. Three fish families (Cichlidae, Bagridae, and Clariidae) yielded highest number (41.3%) of species while Denticeptidae, Protopteridae, and Osteoglossidae had the least. Oreochromis niloticus, Chrysichthys nigrodigitatus, and Clarias anguillaris numerically dominated (46.4%) catch composition. Species richness was higher for the river stretch in forest area than in savanna, and it was correlated significantly with width of the reach, water transparency, depth, and flow velocity (P 0.6) and had higher richness (>9.7) than those for dry season. Wet season and forest regions were therefore critical in maintaining fish stock of Cross River.

The impact of coloured filters on the performance of polycrystalline photovoltaic panel in an uncontrolled environment

Abstract: Photovoltaic modules behave extraordinarily by transforming part of the visible spectrum into electrical energy, and their efficiencies are affected by the nature of radiation (light) reaching them. When light strikes a photovoltaic cell, this light may go through the cell without been absorbed if it is too energetic or if the light possesses low energy it will be absorbed by the cell and cause the electrons to twist and vibrate in their bonds without dislodging them, hence causing the cell to heat up which ultimately leads to a decrease in its overall efficiency. This study is aimed to investigate how photovoltaics respond to different wavelengths of light. For the study to achieve its aim, colour filters were used to ensure that only a particular wavelength of light reaches the photovoltaic module at a time. In the process of collecting data from the solar panel, the solar panel was placed horizontally flat on a platform one meter above sea level facing the sun. Data was first obtained from the solar panel without the filters and after that with the filters placed one at a time and data collected accordingly. The amount of solar power and solar flux anytime a different colour filter was placed on the solar panel were measured. Among the coloured filter used yellow produced the highest efficiency, while blue produced the least efficiency. However, the solar panel was still more efficient when exposed to the natural spectrum.

A Comparative Study of Valuation Variance and Accuracy between Nigeria and UK

Abstract: The study compared the level of valuation variance and inaccuracy between Nigeria and UK. In order to achieve the aim for the study, a survey method was employed using questionnaire administered on respondent estate surveyors and valuers in Calabar and Uyo metropolises. The study surveyed valuers opinions on the existence of valuation variance and inaccuracy, the possible causes and the margin of valuation error and data collected through questionnaire was analyzed using descriptive statistics to find the mean score, standard deviation and percentages. The findings from the study show that valuation variance and inaccuracy is high in Nigeria as compared to UK. The possible causes include lack of standards, lack of market data/comparables, lack of regulatory framework, methods/bases of valuation adopted, client’s influence, inadequate training of valuers, imperfect knowledge of the property market, wrong assumptions on cost per square metre, lack of professional experience as well as failure to discipline valuers on cases of negligence with lack of standards ranked first with the highest frequency and mean score. The study concluded by recommending the creation of a central property database, adopting/enforcement of international valuation standards, enforcement of disciplinary measures for erring members on negligence and a defined acceptable margin of valuation error.

Improving broiler performance in the tropics using quantitative nutrition

Abstract: The conventional method of feeding broilers, using high density diets has been found to be associated with increases in fatness and a number of metabolic disorders. The adverse effect of high density diets on the performance of broilers was found to be more pronounced under a tropical environment. Allowing broilers free access to feed using low density diets (quantitative nutrition) has been suggested as a strategy to improve the performance of the broilers within the prevailing environmental conditions in the tropics. A specific approach had been evaluated as suitable for reducing the available metabolisable energy (AME) intakes of the broiler and increasing feed intake. This involves diet dilution with high fibre feedstuffs to reduce the available metabolisable energy (AME) value of the diet.