Category Archives: International Journal of Engineering and Emerging Scientific Discovery,volume 6, number 1,2021

0THEORETICAL EVALUATION OF STEPSAPPROACHING ZERO EMISSION ON A DOUBLE THICK BARRIER OF A GAMMA PARTICLE

¹E. W. Likta, ²M. A. Abdul Azeez, ² F. W. Burari and ² O. W. Olasoji

¹ Department of Physics, University of Maiduguri, Maiduguri, Borno State, Nigeria

² Department of Physics, AbubakarTafawaBalewa University, Bauchi, Nigeria

Email: emmalikta2014@gmail.com

ABSTRACT

The goal of this work is to obtain tunneling probability of a gamma particle. The application of Schrӧdinger’s equation in barrier penetration has been applied to gamma particle decay for light, medium and heavy nuclei. Gamma particle tunneling probability has been calculated analytically. Decay probability computed for each gamma particle emitting nucleus shows interesting variations. Log plot of calculated Decay constant plotted against atomic number (Z), mass number (A) and Energy for gamma particle emitting nucleus shows the variations interesting.   Half-life which is a function of decay probability plotted against gamma particle energy or against atomic number of gamma particle emitting nucleus shows the variations of decay probabilities. Log plot of Calculated Half-life plotted against atomic number (Z), mass number (A) and Energy for gamma particle emitting nucleus shows interesting variations of decay probabilities. Calculated half-lives compared with experimental half-lives for each gamma particle emitting nucleus shows results which are in good agreement.

Key word:Schrӧdinger’s equation, Emission, Half-life,Gamma and Decay constant.

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GAS LIFT: PRODUCING MARGINAL FIELDS USING HIGH GAS RESERVOIR PRESSURE AS CONTINUOUS GAS SOURCE

URCE

¹Akpoturi Peters, ²Oby Ejelonu, ³Uti Mark & ³Umukoro George

¹Department of Petroleum Engineering, Federal University of Petroleum Resoures, Effurun

²Department of Petroleum Engineering, PTI, Effurun, Delta State

³Department of Petroleum Engineering, Delta State University, Abraka    

ABSTRACT

Gas lift is one of the eight artificial lift technique applied to enhance the productions of oil wells (natural flowing or dead due to higher hydrostatic pressure over the reservoir pressure required to overcome it). The two major disadvantages of gas lift are; continuous source of high pressure gas and work over of, wells to install side pockets mandrel(s) for gas injection especially where gas lift was not initially planned before well completion. In Nigeria the above constrains are obvious especially when considering gas lifting of marginal, depleted fields and water logged wells. The paper presents a case where this class fields have been economically produced considering the presence of map gnus! High pressure gas reservoir as continuous gas source and use of wire line operated perforator and wire line retrievable pack off tubing assembles. This process could be used to sustain optimal production of similar fields to abandonment without necessarily leaving sustainable oil and gas reserves in place.

ENGINEERING PRACTICES IN THE POST -PANDEMIC ERA: THE CHALLENGES, PROSPECT AND IMPACT REDUCTION.

Gana A. J; Raphael, O. D & Braimoh S. O.

Department of Civil Engineering, Landmark University Omu-Aran Kwara State

Department of Agricultural and Bio-system Engineering, Landmark University, Omu-Aran

Department Civil Engineering, Landmark University Omu-Aran, Kwara state

Email:  phildebo123@gmail.com

ABSTRACT

This study assessed engineering practices in the post pandemic Era and its impacts on engineering practices, Challenges during engineering practices, the post-Pandemic Era, prospect in the post-pandemic Era, and its impact reduction.

Key words: – Engineering practices, post-pandemic Era, challenges, prospect, and impact reduction.

OIL POLLUTION ON SOIL ECOSYSTEM AND THE USE OF INDIGENOUS SOIL BACTERIA FOR BIO-REMEDIATION SYNTHESIS

¹Okpara O.N and ²Akpoturi Peters

¹Department of Biochemistry, Federal University Otuoke, Bayelsa State

²Department of Petroleum Engineering, Federal University of Petroleum Resources, Effurun

ABSTRACT

A bioremediation strategy based on Azotobacter- seeding of oil polluted medium containing indigenous bacterial degraders was used to enhance the removal of the contaminating crude oil. In this study, biological nitrogen fixation was co- optimized with crude oil degradation. Increase in cell number for both Azotobacter (from 0.5 – 4.3 x 10⁶ cells/ml) and the oil degrading bacteria from 0.3- 0.6 x 10⁶ cells/ml) in 10 days indicated significant nitrogen fixation and oil degradation in the two bacteria respectively. The low percentage, remaining crude oil (20 – 30%) in the polluted mixed cultures within 14 days confirmed the bioremediation efficiency of the bacterium-Azotobacter consortium. In the field demonstration of this bioremediation and Biological nitrogen fixation processes in an oil polluted soil microcosm, increase in growth parameters of the planted sorghum cultivar was significant in the Azotobacter – seeded plots, relative to non-seeded portion. Hence this bioremediation strategy hold strong potential for a large-scale clean-up of oil-polluted degraded soils and other ecosystems in the natural environment.

Keywords: Soil, Crude oil, Pollution, fixation, bacteria, degraders, clean-up, ecosystem, bioremediation contamination and environment.