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Your search keyword '"Gbadamosi, Afeez O."' showing total 46 results
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46 results on '"Gbadamosi, Afeez O."'

36. Effect of Nanoparticles in Drilling Fluids on the Transportation of Different Cutting Sizes in a Rotating Horizontal Pipe.

Author

Oseh, Jeffrey O., Norddin, M. N. A. M., Duru, Ugochukwu I., Ngouangna, Eugene N., Ismail, Issham, Gbadamosi, Afeez O., Agi, Augustine, Yahya, Muftahu N., Okoli, Nnanna, and Abuhoureyah, Rafeq A.

Subjects
ALUMINUM oxide, SILICA, DRILLING fluids, DRILL pipe, DRILLING muds
Abstract

Copyright of Journal of Engineering Research is the property of Sultan Qaboos University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
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37. Improvement in Fluid Loss Control and Viscosity of Water-based drilling Mud under High Temperature and Sodium Chloride Salt Conditions using Nanohydroxyapatite.

Author

Oseh, Jeffrey O., Norddin, M. N. A. M., Duru, Ugochukwu I., Ngouangna, Eugene N., Ismail, Issham, Gbadamosi, Afeez O., Agi, Augustine, Yahya, Muftahu N., and Oguamah, Ifeanyi A.

Subjects
FLUID control, DRILLING muds, SODIUM sulfate, SALT, HIGH temperatures
Abstract

Copyright of Journal of Engineering Research is the property of Sultan Qaboos University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
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38. Modification and Performance Evaluation of the Viscosity of Water-Based Mud at Different Hole Angles for Cuttings Transport Using Sodium Dodecyl Sulfate Modified Polyethylene Glycol-Nanosilica Composite

Author

Oseh, Jeffrey Onuoma, primary, Blkoor, Shafeeg O., additional, Norddin, MNAM, additional, Ismail, Issham, additional, Gbadamosi, Afeez O., additional, Agi, Augustine, additional, Risal, Abdul R., additional, and Mohamed, Moamen H., additional

Published
2022
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39. Kinetic and thermodynamic analysis of biodiesel and associated oil from Jatropha curcasL. during thermal degradation

Author

Yusuff, Adeyinka S., Bangwal, Dinesh P., Gbadamosi, Afeez O., and Atray, Neeraj

Abstract

Herein, Jatropha curcasseed oil, a non-edible plant oil, was employed as low-grade feedstock to make biodiesel via a two-step transesterification process. The Jatropha curcasoil (JCO) and its corresponding biodiesel (JCO-B) were characterized by FTIR and GC-FID analyses. Thermal stability experiments were conducted using thermogravimetry (TGA/DTG) technique at different heating rates of 5, 10 and 15 °C/min with a temperature range from 30 to 900 °C. Kinetic and thermodynamic characteristics of JCO and JCO-B were investigated. The TGA data were evaluated by the Flynn-Wall-Ozawa (FWO) and Vyazovkin kinetic models, and the reaction order was predicted by Avrami theory. The obtained JCO-B conformed to European standard EN 14103, while its FAME content was 97.51 wt.%. The TGA data fitted well to the FWO isoconversional model with average activation energies of 108.22 kJ mol−1and 33.91 kJ mol−1for JCO and JCO-B, respectively. Additionally, on average, reaction orders estimated by the Avrami model were 1.21 and 1.19 for JCO and JCO-B, respectively. Positive enthalpy change (∆H) and Gibbs-free energy (∆G) suggested an endothermic and nonspontaneous thermal degradation process, while the negative entropy change (∆S) indicated a more ordered process and reaffirmed nonspontaneous reaction. The findings from this study indicated that the TGA/DTG technique could be used to predict the thermal and oxidation stability of biodiesel with respect to time.

Published
2023
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