Rivers State University of Science and Technology

About: Rivers State University of Science and Technology is a education organization based out in Port Harcourt, Rivers, Nigeria. It is known for research contribution in the topics: Population & Threatened species. The organization has 1826 authors who have published 1833 publications receiving 15183 citations.

Case Studies from Africa

Abstract: This chapter entitle, “Case studies from Africa”, Bamidele Wale-Oshinowo, Sorbarikor Lebura, Nejla Yacoub and Laurice Alexandre-Leclair present case studies from Ghana, Kenya, Nigeria and Tunisia where, in recent years, women entrepreneurs have been consolidating a strong position in the sustainable fashion industry.

Determination of seismic blast vibrations and damage to structures in the Niger Delta region of Nigeria using peak particle velocity

Abstract: This work measured the peak particle velocity of the ground vibrations induced by the detonation of seismic explosives to estimate the magnitude of possible impacts on buildings. The findings are aimed at serving as reference for future seismic exploration design where explosives will be use. The seismograph recording instrument was deployed and 44 shots of 2kg, 3kg, 4kg, and 5kg charges sizes were taken and monitored at distances that ranged from 50m to 300m. This will help in resolving the many controversies about claims of property damage by communities against seismic companies in the Niger Delta area. Longitudinal, transverse and vertical components of the peak particle velocity and their frequencies were monitored and recorded. The scaled distance and the resultants of the peak particle velocity were calculated and also recorded. The vertical peak particle velocities were plotted against the longitudinal peak particle velocities to predict the likelihood of the blast impacts on the neighbouring buildings. It was discovered that no major damage would be impacted on the buildings within 50m to 300m from an explosive blast of 2kg to 5kg. Peak particle velocities for the different charge sizes were also plotted against the scaled distance to determine the geologic and soil site constants k and α. The average values obtained for the constants were 13.29 and 0.58 respectively. The United States Bureau of Mines (USBM) and Office for Surface Mines (OSM) standards were employed as guide for data analysis and interpretation. The peak particle velocities were much lower than the USBM limits. 2-3kg charge sizes detonated in the area at distances of 50m to 300m to a structure may cause no damage but a 4-5kg of explosive sizes may cause threshold damages to buildings.

Board Composition and Corporate Performance: X-raying the Nexus in Nigerian Banks:

Abstract: We investigate the nexus between board composition and corporate performance of Nigerian banks listed on the Nigerian Stock Exchange (NSE) from 2010 to 2019. The contextual board characteristics of...

Effect of mulch materials on soil physico-chemical properties and the performance of castor bean plant (Ricinus communis) in rivers state, Nigeria

Abstract: Mulches are known to conserve soil moisture, provide organic matter, protect soil and improve the soil as a growing environment. A field experiment was conducted to assess the effect of various mulch materials viz. dry oil palm bunch, saw dust and dry elephant grass at 25, 50 and 25 tons ha-1, respectively along with black plastic mulch on some soil physical and chemical properties and the performance of castor bean plant (Ricinus communis). All the mulches were applied to a mulch thickness of 5cm in this study. Results showed that pH values, organic carbon content and total nitrogen were all significantly improved by mulching. Bulk density values were reduced to 1.10 - 1.18gcm-3 across all treatments, when compared to the control at 1.33gcm-3. At 6 WAP, plastic mulching increased number of leaves from 16 to 40 leaves per plant and capsule weight from 63.1 to 161.3g/plant; when compared with the control.

Some bacteriological aspects of poultry litter used as feed supplement in rabbit diets

Abstract: An investigation was carried out to determine the microbial load in poultry litter used as feed supplement in rabbit diets. Before heat treatment by deep stacking the poultry litter, samples of the litter were collected to assay for microbial load at the Microbiology Laboratory of the Rivers State University of Science and Technology, Port Harcourt, Nigeria. Results obtained showed that before heat-treating the poultry litter, Escherichia coli, Salmonella, Mycobacterium, Clostridium and Staphylococcus were isolated at 41, 37, 37, 41 and 42°C, respectively. The results obtained also indicate that no pathogen was isolated after heat treatment of between 40 and 55°C for 21 days. This study justifies the suitability of using poultry litter as a feed supplement.