Institution
Rivers State University of Science and Technology
Education•Port Harcourt, Rivers, Nigeria•
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.
Papers published on a yearly basis
Papers
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19 Nov 2015
TL;DR: In this paper, a load-based exergetic assessment of a thermal power plant for offshore utilization was carried out, where the gas turbine systems were split into sub-systems and simplified into control volume to show inflow and outflow of exergy at different loading.
Abstract: The Load-based exergetic assessment of a thermal power plant for offshore utilization was carried out. The gas turbine systems were split into sub-systems and simplified into control volume to show inflow and outflow of exergy at different loading. The operating parameters of the plant were monitored for 12 months through human machine interface (HMI), and the data collected were used with thermodynamic relations to carry out the assessment. MATLAB 7.3 ® Software was used to evaluate the various model equations and results tabulated. The results show that for every 1% drop in the operational load, the thermal efficiency and exergy efficiency drop by 0.17% and 0.25% respectively. It further shows that there is about 0.006% decrease in fuel consumption under the same conditions, and at 44% loading the system has the highest percentage of exergy loss of about 21.3%. This means that as the operational load decrease, the percentage exergy loss increase proportionally. Enormous exergy is lost in the exhaust system due to absence of heat recovery steam generator. The assessment established that the components of the power plant degrade in the quality of exergy and performance at different loading of the plant due to mechanical loss and irreversibility.
5 citations
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01 Jan 2018TL;DR: In this article, the effects of poultry production on agricultural output in Nigeria were examined by using the Phillips-Perron unit root test and error correction model, and the results showed that poultry meat production is associated with a positive and significant coefficient.
Abstract: This study examined the effects of poultry production on agricultural output in Nigeria. Specifically, this study is tailored to explore the effects of poultry birds’ production, poultry eggs production and poultry meat production on agricultural output. The period covered by the study spanned from 1975 to 2016. Data on the variables of interests were obtained from the Food and Agricultural Organization Statistics (FAOSTAT) and National Bureau of Statistics. The analytical techniques comprise OLS and error correction model. The Phillips-Perron unit root test results show that all the variables have unit root at levels test, but become stationary after being differenced once. The cointegration test results indicate that each of the test statistics show evidence of two cointegrating equations. This suggests that in actual fact long run relationship exists among the variables. From the parsimonious ECM, it was revealed that poultry birds production negatively influence agricultural GDP. Poultry eggs production has an insignificant effect on agricultural GDP as evidenced in the parsimonious ECM. The result further shows that poultry meat production is associated with a positive and significant coefficient. The implication of this finding is that the production of poultry meats enhances agricultural GDP through its important contribution to the livestock sub-sector. It was discovered from the result that the coefficient (-0.378) of error correction has the intended theoretical negative sign and also satisfies the statistical condition at 1 percent level. It is clear from this finding that any short run disequilibrium in the system can be corrected in the long run at 39 percent. Thus, this study recommends amongst others that governments at all levels should evolve measures that promote huge commitment to infrastructural development in agricultural sector in order to boost poultry output and promote self-sufficiency in poultry farming.
5 citations
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TL;DR: Cosmetics sold in Nigeria may not add to the body burden of metals and metalloids, and the target hazard quotient, hazard index, and cancer risk were less than the acceptable limit, indicating a measure of safety.
Abstract: Twenty different brands of cosmetic products were purchased from supermarkets in Port Harcourt, Rivers State, Nigeria, with the aims to determine the levels of metals and assess the health risk to humans through long-term usage. The concentration of metals (arsenic, lead, mercury, cadmium, and nickel) in the cosmetic samples was measured with atomic absorption spectrophotometry after acid digestion. The concentration of metals in these brands of cosmetic studied ranged from As: 0.001-0.0161 mg/kg, Pb: 0.289-2.873 mg/kg, Hg: 0.001-0.0014 mg/kg, Cd: 0.001-0.334 mg/kg, and Ni: 0.007-2.748 mg/kg. The metal and metalloid contents were less than the regulatory limits set for both metal impurities and as color additives. The target hazard quotient, hazard index, and cancer risk were less than the acceptable limit, indicating a measure of safety. Cosmetics sold in Nigeria may not add to the body burden of metals and metalloids.
5 citations
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29 Jan 2021TL;DR: In this paper, the authors suggest that financial technology should be used as a means of driving financial development in developing countries as it offers a more sustainable and cost-effective solution to the problem of financial inclusion.
Abstract: Traditional banking methods of addressing the problem of financial inclusion in developing countries are not working efficiently. As it is becoming obvious, opening operational and functional banking business offices in many developing countries is not a financially viable option. Banking offices need an enormous amount of resources, equipment, and personnel to run efficiently. In most developing countries where low income is the norm rather than the exceptions, it is not possible to sustain a policy objective that employs the use of banking offices to address the problem of financial inclusion. Such initiative could start out well; however, the possibility of sustainability is called into question. Thus, whatever meaningful gains have been garnered from such policy will be reversed or lost over time. To address the financial inclusion problem, financial technology offers the instrument, tools, and mechanism to drive financial inclusion in ways traditional methods of banking cannot. Financial technology offers cost-effective and cheaper means of driving financial development. This chapter suggests that financial technology should be used as a means of driving financial development in developing countries as it offers a more sustainable and cost-effective solution to the problem of financial inclusion. Developing countries should embrace, adopt, and adapt financial technologies to address their financial development issues.
5 citations
23 Oct 2018
TL;DR: In this article, a path loss model was developed using Snell's law and by considering the free space loss, log-normal loss, the deduced in-building path loss exponent, and the distance between the transmitter and receiver.
Abstract: In this work, measurements of GSM signal strength were conducted in buildings to determine the signal penetration loss through them. This was carried out using Radio Frequency Signal Tracker installed in Tecno N9 tablet. These buildings were made with different materials such as Mud, sandcrete, and alucoboard. The average penetration loss was computed by subtracting the indoor received signal strength from the outdoor received signal strength, the same for both closed and opened doors and windows and the in- building (obstructed) penetration path loss exponent was determined. Based on the measurement data, a path loss model was dev eloped using Snell’s law and by considering the free space loss, log-normal loss, the deduced in-building path loss exponent, and the distance between the transmitter and receiver. The developed path loss model was compared with the ITU-R indoor path loss model and a Matlab based user interface for instant path loss prediction was also created. The measurement results indicated that the building with alucoboard wall cladding had the maximum signal penetration loss (104.52 dB) while the sandcrete building with unrusted corrugated iron sheet roof had the minimum signal penetration loss (81.85 dB). The results also showed that the in-building path loss exponent as the signal passed from outdoor to indoor through the building material were from 0.87 to 1.32. The path loss exponent from the transmitter to the receiver varied between 4.87 to 5.32, and the standard deviation between 17.0dB to 17.8dB. The comparison of the developed model to the ITU indoor path loss model showed very close relationship. This work has deduced a path loss exponent for GSM signal penetration in buildings which is dependent on the building material for the first time in Nigeria.
5 citations
Authors
Showing all 1839 results
Name | H-index | Papers | Citations |
---|---|---|---|
Paripurnanda Loganathan | 39 | 144 | 5248 |
Luca Luiselli | 39 | 310 | 6159 |
Godfrey C. Akani | 22 | 110 | 1751 |
Reginald B. Kogbara | 21 | 47 | 1133 |
Charles A. Igwe | 19 | 88 | 1322 |
Leo C. Osuji | 18 | 72 | 998 |
Sunday Y. Giami | 17 | 28 | 794 |
B.B. Fakae | 17 | 32 | 727 |
Zaccheaus Awortu Jeremiah | 16 | 47 | 845 |
S. C. Achinewhu | 16 | 27 | 687 |
Josiah M. Ayotamuno | 15 | 27 | 498 |
Reuben N. Okparanma | 15 | 31 | 483 |
E. Nwokolo | 15 | 34 | 933 |
O Obire | 14 | 24 | 601 |
Luca Luiselli | 13 | 69 | 587 |