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.

Evaluation of Female Sexual Function in Persons With Type 2 Diabetes Mellitus Seen in a Tertiary Hospital in Southeast Nigeria With Emphasis on its Frequency and Predictors.

Abstract: Women with diabetes are at increased risk of sexual problems. However, this problem is underreported; hence, the need for this study. This was a cross sectional case-controlled study. Seventy-five ...

Analyses of Anaerobic Batch Digestion of Municipal Solid Waste in the Production of Biogas Using Mathematical Models

Abstract: The process dynamics of anaerobic digestion of municipal solid waste (MSW) in a batch bioreactor for the production of biogas has been analysed. An anaerobic batch digester was designed for the treatment of MSW in Port Harcourt metropolis, Nigeria, while at the same time generate biogas as a useful by-product. In the course of the design, the biochemical behaviour of the MSW in batch processing was investigated and analysed. Mathematical models were developed to describe the behaviour of the waste using material balance analysis. The models were validated by the formulation of a Microsoft Visual Basic Version 6.0 programme to simulate the digestion process for a fractional conversion of 0.2-0.8 and Total solids (TS) concentration of 4-30%. The results were analysed using Microsoft Chart Editor and showed that the fractional conversion has various levels of effect on other process parameters like the mean cell residence time, substrate and microbial concentrations and the volume of biogas/methane produced.

Premium customers' perception of firms' customer relationship management segmentation, identity strategies and their satisfaction

Abstract: This paper examines premium customers' perception of CRM segmentation strategies of firms and how their identity and satisfaction are taken into account by Nigerian mobile telecommunications firms. The qualitative phenomenology interview strategy was chosen for this study. Twelve interviews were conducted and data were analysed using content and thematic techniques with NVivo 11. Findings show that personality and economic identities were the variables most taken into consideration by firms for implementing their CRMS [CRMS]. These identities affect firms' CRMS strategy based on customer lifetime value. The study also revealed that CRM affect both identities and premium CSAT, although quality of service showed higher impact than price and trust on satisfaction. Six themes affect experiences of respondents. This study extends the value of social identity theory (SIT) and rationality choice theory (RCT) in CRMS. The practical implication suggests profitable and competitive opportunities for firms to improve premium CSAT.

An unusually early age of presentation of Phylloides tumour in Eastern Nigeria.

Abstract: M.A. NZEGWU, mbbs, mwacp, fmcpath, consultant pathologist and lecturer, Department of Anatomic Pathology, University of Nigeria Teaching Hospital, Enugu, A. ADANNA, bsc, mph, University of Texas Medical School Medicine and Surgery, San Antonio, USA, O. DANIEL, mbbs, fwacp, consultant pathologist and lecturer, Department of Anatomic Pathology, University of Nigeria Teaching Hospital, Enugu, A. UGOCHUKWU, frcs, (ed), fwacs, fics, consultant surgeon, Enugu State University Teaching Hospital, Enugu, & K. AGU, mbbs, fwacs, consultant surgeon and lecturer, Department of Surgery, University of Nigeria Teaching Hospital, Enugu, Nigeria

Effects of organic amendment on some soil physicochemical characteristics and vegetative properties of Zea mays in wetland soils of the Niger Delta impacted with crude oil

Abstract: This study sought to investigate the effects of organic amendments on the degradation of hydrocarbons and vegetative properties of Zea mays grown in crude oil-contaminated wetland soils of the Niger Delta, Nigeria. Two soil types were investigated, namely, fadama soil (oxisol) and swamp forest soil (utisol). For each soil type, 48 treatment cells and 1 control containing 1 kg of soil each were spiked with crude oil at concentrations ranging from 50 to 200 g kg−1, representing 5–20% (m/m) contamination levels, respectively. Then, 5 days after the contamination, the soils were amended with cow dung (CD), poultry waste (PW), and palm oil waste (POW). The ratios of soil to organic amendments used were 1:1 and 2:1. The soils were tilled and irrigated regularly, and monitored for a total period of 112 days. The same conditions were used to investigate the vegetative properties of Z. mays in these oil-contaminated soils with organic amendments. The total organic carbon (TOC) and pH increased significantly within the first 2 weeks after crude oil contamination; thereafter, the pH of the soil decreased significantly over incubation time, while there was steady increase in TOC with incubation time. The percentage nitrogen and total petroleum hydrocarbons (TPH) decreased significantly. The utisol soil showed better plant performance, despite the lower hydrocarbon degradation rate. The organic amendments showed a TPH degradation trend that followed the order: PW > CD > POW. They also improved the seed emergence of Zea mays.