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.

Larval development of Chilo partellus swinhoe in artificial diet incorporating different sorghum genotypes

Abstract: A study was carried out to investigate the presence of antibiosis in some sorghum genotypes. First instar Chilo partellus Swinhoe (Lepidoptera; Pyralidae) larvae were reared in artificial diets incorporating the different genotypes. HYD I and IS 1044 (check) slowed down 1arvaI development and caused larval mortality. Furtherrilore, significantly fewer eggs were laid by emerging female moths raised on these genotypes.

Impact of Illegal Crude Oil Refining in Jike-ama River of Bille Kingdom, Rivers State, Nigeria

Abstract: Oil exploration and exploitation is a lucrative business and one of the major sources of revenue in Nigeria. Each year, hundreds of post-impact assessment (PIA) studies are conducted to assess the impact of the hazards generated by the oil industry on social environment and on human health. This hazardous impact is the associated with the activities of illegal refining of crude oil. Thus, this work examined the impact of illegal crude oil refining activities in Jike-Ama river of Jike-Ama community. Shellfish, fish, surface water and sediment samples were randomly collected in triplicates. Physiochemical parameters, heavy metal content, polycyclic aromatic hydrocarbons (PAHs) and total hydrocarbon content of the water in addition to heavy metal content and PAHs in fish, Shellfish and sediment were determined. The results of the physicochemical parameters showed that pH, total suspended solids, biological oxygen demand, turbidity and total hydrocarbon content of water were above FEPA permissible limits while chloride, nitrate and sulphate detected in water were within FEPA permissible limits. Dissolved oxygen was observed to be below FEPA permissible limit. The mean concentration of heavy metals and PAHs in sediment showed significant difference (p<0.05) when compared with values for Shellfish and fish and were above FEPA and Original Research Article Ndidi et al.; IJBCRR, 29(6): 46-51, 2020; Article no.IJBCRR.52678 47 WHO permissible limits. Shellfish had higher concentrations of heavy metals and PAHs than fish. PAHs values in shellfish showed significant difference (p<0.05). Heavy metals concentration in fish were above permissible limits except Cr, Zn and Pb. Concentration of PAHs in fish, shellfish, surface water and sediment were generally above FEPA and WHO permissible limits. This findings suggests high concentration of contaminants in Jike-Ama river.

The Relative Effectiveness of Collaborative Learning Approach on Secondary School Students' Understanding of the Concept of Electromagnetic Induction

Abstract: This study compared the relative effectiveness of Collaborative and Demonstration Teaching Approaches on students’ conceptual understanding of electromagnetic induction in secondary schools in Nigeria. Two research questions and one hypothesis were formulated to guide the research. The quasi experimental design was adopted for this study. The population of the study is made up of the 323 Senior Secondary III physics students in all six public co-educational Senior Secondary schools in Port Harcourt local Government Area. A sample of 180 students, comprising 120 males and 60 females, were selected for the study. Simple Means, Standard Deviation and Variance were used to answer research questions while t-test was utilized for the testing of the hypothesis. The results show that students taught with Collaborative Learning Approach understood Original research article Adolphus et al.; BJESBS, 6(3): 210-217, 2015; Article no.BJESBS.2015.057 211 better than those taught with Demonstration Approach. Based on the effectiveness of the Collaborative learning approach, it is recommended that teachers be acquainted with the techniques and use of collaborative and other constructivists teaching approaches in science classrooms.