Browsing by Author "Titilayo Olayinka,Mariam"

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    Design and fabrication of an angle of repose apparatus for granular material analysis
    (University of Eloued جامعة الوادي, 2024-04) Sulaimana ,Abdulganiyu Abdulrasak; Jamiu, MuhammedSulaiman; Titilayo Olayinka,Mariam
    The angle of repose (AOR) plays a crucial role in analyzing the flowability of granular materials, which are widely used in fields such as agriculture, pharmaceuticals, and civil engineering. This study outlines designing and constructing an affordable, user-friendly Apparatus for accurate AOR measurement. Built for both laboratory and field applications, the Apparatus was made from materials that are easily accessible and include an adjustable funnel, a central column, and a sturdy base to ensure consistent and precise measurements. Experimental tests using agricultural materials such as rice, beans, wheat, and millet yielded reliable results with low standard deviations. A paired t-test indicated significant statistical differences between the newly designed Apparatus and conventional methods (t-statistic of -2.98, p-value of 0.015), though these differences fell within an acceptable experimental range of ±0.5°. The mean difference of -0.26° and a 95% confidence interval of [-0.43°, -0.09°] illustrate a slight downward bias in the Apparatus while confirming its reliability and accuracy. This research provides a practical solution for measuring AOR, especially in resource-constrained environments, and suggests potential enhancements, like incorporating digital sensors for greater precision and changeable orifice opening sizes for the funnel ranging from 10 mm to 22 mm
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    Development and characterization of novel fast nanosized scintillator Y2SiO5: Ce3+ prepared by polymer-assisted Sol–Gel method for radiation detection applications
    (University of Eloued جامعة الوادي, 2024-11-20) Guerbous,Billel Zahraab; Jamiu, MuhammedSulaiman; Titilayo Olayinka,Mariam
    In this study, three sample detectors were meticulously crafted using cerium-activated X1-Y2SiO5: Ce3+ powder prepared via the monomer and polymer-assisted sol–gel method. The investigation aimed to assess how ethylene glycol (EG) monomer, polyethylene glycol (PEG) polymer, and polyvinyl alcohol (PVA) polymer influence the Coincidence Timing Resolution (CTR) of Ce3+ (xCe = 0.01)-doped Y2SiO5, with the goal to enhance radiation detection technologies. An advanced nuclear instrumentation system was set up to measure the coincidence timing resolution using 511 keV annihilation photons emitted by a 22Na radioactive source. Results showed that complexing agents significantly affected the CTR of YSO: Ce3+ nanoscintillators, with the EG-prepared sample detector exhibiting the most favorable CTR of 480±21 ps. These findings enhance our understanding of YSO: Ce3+ nanoscintillators’ synthesis and optimization, underscoring the pivotal role of the chemical environment and emphasizing the superior performance of ethylene glycol. These insights provide valuable avenues for further advancements in radiation detection and medical imaging applications