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.

Aspects of Air Quality Status of Bonny Island, Nigeria Attributed to an Lng Plant

Abstract: The Bonny Island axis of the Niger Delta, Nigeria, is one of the most industrialized belts of Nigeria. Among the significant industries in the locality is the Nigerian natural gas liquefying plants. The plant complex generates emissions which are propagated by meteorological agents. An atmospheric dispersion model was used to model the emissions using a computer programme. A statistical analysis of meteorological parameters was also carried out to determine the pollutants dispersion in the atmosphere. The analysis shows that wind speed is moderate and the predominance of southerly winds will move plumes toward human settlements in the north and north-eastern directions from the plant. From the diffusion model, the compounds likely to be emitted in the largest quantity from the plant in the order of magnitude were CO2, NOx, CO, PM10 and SOx. There is evidence that pollutants concentration would be highest for receptors at about 10 km from the emission sources even under unstable atmospheric conditions. The...

Knowledge of modern contraceptives and their use among rural women of childbearing age in Rivers State Nigeria

Abstract: Background: The use of modern contraceptive (MC) is a cost-effective public health measure for reducing maternal deaths due to unintended and high-risk pregnancies. In Nigeria, efforts have been made by government and nongovernmental organizations toward improving access to family planning services. The impact of this effort among rural women in Rivers State, Nigeria, however, is insufficiently documented hence the need for this study. Subjects and Methods: A total of 380 rural women of childbearing age in Rivers State, Nigeria, were recruited by a multistage random sampling method using a cross-sectional descriptive design. Respondents provided information on their socioeconomic background, sources of information and knowledge of MCs, contraceptive use, and the reasons for use or nonuse of contraceptives. Data were analyzed with SPSS version 15 and the level of statistical significance was set at P = 0.05. Results: Almost all (n = 378; 99.5%), the rural women had awareness of MCs, but only 238 (63.0%) had good knowledge of it. The most common known methods were the male condom (n = 255; 67.1%) and injectables (n = 190; 50.0%). Those in current use of any MC method were 140 (36.8%) while only 86 (22.6%) used it consistently. Male condom was the commonly used method. Conclusion: Although the awareness of MCs among rural women in Rivers State Nigeria is high, their uses are unacceptably low. Family planning education should be provided for community-based health-care givers; mass media efforts need to be intensified in local languages.

Impact of Wet and Dry Seasons on the Distribution of Polycyclic Aromatic Hydrocarbons in Selected Vended Street Foods in Parts of Port Harcourt Metropolis

Abstract: The distribution patterns of PAHs in selected ready-to-eat street foods in parts of Port Harcourt metropolis was investigated during wet and dry seasons in 3 locations (Makoba-station 1, Elekahia-station 2 and Rivers State University-station 3). The study was carried out using a complete randomized design in three factorial experiments (Factors A, B and C). Factor A represented Season, B Location and C Street Vended foods samples. The selected food samples were Roasted plantain (RP1-3), Roasted Fish (RF1-3), Roasted Yam (RY1-3), Meat Pie (MP1-3), Suya (SY1-3) and Doughnut (DN1-3). The foods were sampled twice each season and the mean results recorded. Gas Chromatography-Mass Spectrophotometer (GC-MS) was used for the identification and evaluation of the presence of 16 Polycyclic Aromatic Hydrocarbon (PAHs). Original Research Article Oyet et al.; EJNFS, 12(1): 16-29, 2020; Article no.EJNFS.54483 17 Percentage distribution of PAHs in street vended foods during the wet and dry season showed naphthalene value of RY1:57.6% dry and RY1 Not Detected (ND) wet season, MP2: 10.7% dry and MP2: 3.4% wet. Higher naphthalene values distribution during dry season (DN1: 59.6%) was observed, with corresponding lower values recorded during the wet season (DN1: 43.3%). RP1: 10.4% wet and RY1: 19.4% wet while RP1: 9.6% dry and RY1: 2.6% dry showed lower percentage of Flouranthene values during the dry season compared with higher values obtained for the wet season. Chrysene values (RP1: 10.9% wet, RP1: 10.0% dry, SY2: 69.2% wet, SY2: 71.4% dry, MP2: 69.8%, MP2: 22.7% wet) were detected in street vended food as low molecular weight hydrocarbons, with higher degree of distribution during dry season than the wet season. Higher molecular weight Benzo(a)anthracene was detected for all food samples. For RY2: 86.1% dry and 81% wet, RF3:71.3% dry and RF3: 52.0% wet, RF2: 69.0% wet, RF2: 61.4 dry, (DN1-DN3: 2871.5% wet) and (DN1-3: 21.9-76% dry) seasons for Benzo(a)anthracene. The study showed that Benzo(a)anthracene had the highest percentage distribution during dry season in roasted fish and doughnut (DN2). Benzo(k)fluoranthene (RP1: 2.5% wet, 2.6%dry), Benzo(b)fluoranthene (RY2: 9.9% wet, 1.7% dry, MP2: 8.9% dry and 2.7% wet) and Benzo(a)pyrene (RP1: 5.5% wet, 4.5% dry) were detected in all vended foods during wet and dry seasons, with higher percentage values observed during the dry season. Benzo(a)anthracene, Benzo(k)fluoranthene, Benzo(b)fluoranthene and Benzo(a)pyrene were detected in all vended foods. The study showed that the wet and dry seasons have imparted on the distribution levels of Lower Molecular Weight (LMW) and Higher Molecular Weight (HMW) of PAHs in ready-to-eat vended street foods. The patterns of distribution established the presence of these PAHs in selected ready-to-eat vended street foods. PAHs found in street vended foods is of public health concern to consumers and call for urgent attention for the review of the PAHs sources in food preparations, handling and storage in Port Harcourt metropolis.

Euclidean null controllability of infinite neutral differential systems

Abstract: This paper is aimed at establishing sufficient computable criteria for the Euclidean null controllability of an infinite neutral differential system, when the controls are essentially bounded measurable functions on finite intervals, with values in a compact subset U of an m-dimensional Euclidean space with zero in its interior Our results are obtained by exploiting the stability of the free system and the rank criterion for properness of the controlled system An example is also given

Haematological Characteristics Of The Bloody Cockle Anadara senilis (l.) From Andoni Flats, Niger Delta, Nigeria.

Abstract: Haematological characteristics of Anadara senilis was investigated. A total of two hundred and forty (240) were sampled from Andoni flats during low tide. They were immediately transferred to the laboratory, where they were sorted and grouped into four different sizes. Group one comprised of (mean length 2.54 cm ± 2.42 and mean weight of 8.37g ± 2.44); size group two has (mean length 3.84 cm ± 0.42 and mean weight 21.42) while group three has (5.76cm ± 0.38 and mean weight of 36.17g ± 3.55) and group four has mean length (7.89 cm ± 0.32; mean weight of 57.41 g ± 6.81). Blood was then taken from the bivalves and were later analysed in the laboratory. The mean values of haematological profiles recorded were (mean ± S.D), haemoglobin (Hb) 4.08 ± 1.88g dl-1; Packed Cell Volume (PCV) 10.98 ± 6.79 %; Red Blood Cells (RBC) 1.97 ± 0.68 x 1012 cells l-1; White Blood Cells (WBC) 3.76 ± 1.51 x 109 cells L-1 Platelets (PLT) 75.36 ± 88.36%; Mean Corpuscular Haemoglobin (MCH) 20.06 ± 3.98pg; Mean Corpuscular Volume (MCV) 50.64 ± 19.30Fl; Mean Corpuscular Haemoglobin (MCHC) 43.79 ± 13.71 gdl-1; Oxygen Carrying Capacity (OCC) 6.11 ± 2.83 vol. %. The highest range of the parameters was recorded in platelets, while the lowest was observed in RBC. Significant differences (P < 0.05) were observed between the four size groups in all the parameters studied. It appeared from the trials that the quantity and quality of the blood tends to increase with size. Key words: Haematology, Bloody cockle, size, Andoni flats, Niger Delta.