https://journalajr2p.com/index.php/AJR2P/issue/feed Asian Journal of Research and Reviews in Physics 2024-04-19T13:02:17+00:00 Asian Journal of Research and Reviews in Physics contact@journalajr2p.com Open Journal Systems <p style="text-align: justify;"><strong>Asian Journal of Research and Reviews in Physics (ISSN: 2582-5992)</strong> aims to publish high-quality papers in all areas of 'physics'. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer-reviewed, open access INTERNATIONAL journal.</p> https://journalajr2p.com/index.php/AJR2P/article/view/160 Assessment of Wind Resource and Its Energy Potential in Three States of Northwest Nigeria 2024-04-02T13:06:57+00:00 Akpaneno A. Francis aniefiokakpaneno@gmail.com Idris Aminu Usman <p>The growing need for clean energy to address the environmental issues caused by the usage of fossil fuels results to the need for Nigeria to develop an alternative energy from untapped wind which is in abundance in the region. The aim of this study is to evaluate wind power potential and wind energy resources of three locations (Kaduna, Kano and Katsina) of northwestern part of Nigeria. The Nigerian Meteorological agency (NIMET) provided the wind speed data spanning 25 years (1996-2020). In the analysis, Weibull two-parameter statistical model was used. The distribution of wind speed across Nigeria demonstrates that some areas in the North are equipped to generate wind. Microsoft excel was used in analyzing the wind speed data obtained. In addition, evaluation of the region’s wind energy resources shows that Kano recorded the highest potential, with WPD of 443.03 Wm-2 at 10m AGL with annual WED of 4.921 kWhm-2day-1 while Kaduna recorded the lowest potential of 198.43 Wm-2 with annual WED of 2.093 kWhm-2day-1. As a result, Kaduna is found to be ideal for small scale wind power generation, while Kano and Katsina may be suitable for large scale wind power generation.</p> 2024-04-02T00:00:00+00:00 Copyright (c) 2024 Author(s). The licensee is the journal publisher. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://journalajr2p.com/index.php/AJR2P/article/view/161 Estimating the Effect of Copolar Attenuation Caused by Rain Events on Radio Wave Propagation 2024-04-19T13:02:17+00:00 C. K. Ojoba J. T. Zhimwang jangfa.zhimwang@fulokoja.edu.ng E. P. Ogherohwo E. Enaibe <p>This study investigates the impact of different rain classifications and elevation angles on copolar attenuation, a critical factor influencing radio wave propagation in communication systems operating in adverse weather conditions. Using data collected over the years 2021 and 2022 in Warri, Delta State of Nigeria. Copolar attenuation values at 40<sup>0</sup> and 60<sup>0</sup> elevation angles were analyzed across various rain classifications, including Drizzle, Widespread, Shower, Cloudburst, and Extreme Cloudburst. The results highlight that higher intensity rain events, such as Cloudburst and Extreme Cloudburst, lead to significantly greater copolar attenuation compared to lower intensity rain classifications. Furthermore, the sensitivity of copolar attenuation to elevation angle is observed, with higher angles generally associated with lower attenuation values. These findings underscore the importance of considering rain intensity and elevation angle in the design and operation of communication systems to mitigate the effects of rain-induced attenuation and ensure reliable signal transmission. By optimizing antenna placement and orientation and employing adaptive communication techniques, such as adaptive modulation and coding, communication networks can be better equipped to maintain connectivity in challenging weather conditions.</p> 2024-04-19T00:00:00+00:00 Copyright (c) 2024 Author(s). The licensee is the journal publisher. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://journalajr2p.com/index.php/AJR2P/article/view/159 Significance of Using Scanning Electron Microscopy with Energy Dispersive X-ray Spectrometry (SEM-EDX) for Analysis of Evidence Material in Forensic Sciences 2024-04-01T08:00:19+00:00 Jumisree Sarmah Pathak jumishreep@iite.ac.in Arvind Kumar Saxena <p>Forensic applications of Scanning Electron Microscopy (SEM) are found mostly in areas where there is a need for good imaging at relatively high magnifications. SEM enables the forensic scientist to examine specimens at much higher magnification than those possible with optical microscopy and without the difficulties of specimen preparation associated with conventional electron microscope. Physicochemical examinations of gunshot residues, called also chemical ballistics, are helpful, e.g. in identification of damages and injuries as the effect of the use of firearms (with indicating the entrance and exit of projectile), estimation of the shooting distance and also establishing, whether a person has used a firearm. It is discussed in details that Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy (SEM-EDX) can serve as a powerful tool for forensic scientists to classify and discriminate evidence material because they can simultaneously examine the morphology and the elemental composition of objects.</p> 2024-04-01T00:00:00+00:00 Copyright (c) 2024 Author(s). The licensee is the journal publisher. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.