In this paper, the radii and the volume mix ratios of Urban aerosols were extracted from Optical Properties of Aerosols and Clouds (OPAC 4.0) at Relative Humidies of 0, 50, 70, 80, 90, 95, 98 and 99. The compositions of urban aerososl in OPAC 4.0 are water solubles (waso) insolub...
Open access
Research Article10.9734/ajr2p/2026/v10i1215
This research presents the design and experimental application of an ultrasonic generator based on an IC 555 timer as a source of ultrasonic waves for bacterial inactivation. The developed system operated in the frequency range of 40–65 kHz and was experimentally evaluated using...
Open access
Research Article10.9734/ajr2p/2026/v10i1213
The assessment of Background Ionization Radiation [BIR] of Rumuagholu Town in Port Harcourt, River State was carried out using an in-situ approach. A well calibrated meter (radalert Tm 100) atomic radiation checking meter containing a Geiger Muller tube capable of detecting alpha...
Open access
Research Article10.9734/ajr2p/2026/v10i1212
Physics provides fundamental tools and conceptual frameworks for understanding complex environmental systems and processes. Through quantitative methods, modeling, measurement technologies, and theoretical constructs, physics underpins many contemporary approaches to environmenta...
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Research Article10.9734/ajr2p/2026/v10i1211
Measurement of background ionizing radiation of Tombia roundabout, Yenegoa, Bayelsa state was successfully carried out. This research was executed with the use of GQ GMC – 300E plus Geiger Muller counter nuclear Radiation meter to measure background ionizing radiation and Global...
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Research Article10.9734/ajr2p/2025/v9i4210
Evaluation of magnetic field intensity around African Independence Television (AIT), and Nigerian Television Authority (NTA) was successfully carried out. This survey was executed with the use of a portable handheld electromagnetic radiation meter Bentech-GM 3120 model that measu...
Open access
Research Article10.9734/ajr2p/2025/v9i4209
A study of evaluation of excess lifetime cancer risk was carried out in Eligbam and government residential area phase II (GRA PHASE II) in Obio/Akpor local government area, the study was successfully caried out using the GMC-300 Giger Muller counter Radiation Detector to measure...
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Research Article10.9734/ajr2p/2025/v9i4208
The study used the Optical Properties of Aerosols and Clouds (OPAC 4.0) database to obtain the microphysical characteristics of urban aerosols and performed numerical analyses of the analytical formulas describing how equilibrium relative humidity (RH), effective radius, hygrosco...
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Research Article10.9734/ajr2p/2025/v9i4207
Among the various mysteries in cuprate high temperature superconductors, the pseudogap (PG) phase stands out for the difficulty in pinning down its origin and its close connection to unconventional superconductivity. It appears above the superconducting transition temperature ,...
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Research Article10.9734/ajr2p/2025/v9i4206
The Magnetosonic Mach number is a non-dimensional parameter that calculates the velocity of the solar wind in relation to the velocity of magnetosonic waves within the same medium, which plays a crucial role in magnetospheric interactions. It influences the efficiency between pla...
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Research Article10.9734/ajr2p/2025/v9i4205