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All Journal Indonesian Journal of Science and Technology Communications in Science and Technology Mechanical Engineering for Society and Industry ASEAN Journal for Science and Engineering in Materials ASEAN Journal of Educational Research and Technology
Al-Obaidi, Abdulkareem Sh. Mahdi
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Investigation of a Cruising Fixed Wing Mini Unmanned Aerial Vehicle Performance Optimization Eftekhari, Shahrooz; Al-Obaidi, Abdulkareem Sh. Mahdi
Indonesian Journal of Science and Technology Vol 4, No 2 (2019): IJOST: VOLUME 4, ISSUE 2, 2019
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v4i2.18185

Abstract

The applications of unmanned aerial vehicles have been extended through the recent decades and they are utilized for both civil and military applications. The urge to utilize unmanned aerial vehicles for civil purposes has elevated researchers and industries interest towards the mini unmanned aerial vehicle (MUAV) category due to its suitable configurations and capabilities for multidisciplinary civil purposes. This study is an effort to further enhance the aerodynamic efficiency of MUAVs through a parametric study of the wing and proposing an innovative bioinspired wing design. The research is conducted utilizing numerical simulation and experimental validation. This research provides a better understanding of different wing parameter(s) effect on the aerodynamic performance of the wing and mini unmanned aerial vehicles. A new wing configuration is designed, implemented and evaluated. The wing is named as Alpine since it is inspired by biomimicry of alpine swift bird. Evaluation of the new wing geometry shows that the Alpine wing geometry performs 35.9% more efficient compared to an existing wing with similar wing area. Hence, the aerodynamic efficiency optimization is achieved for the Alpine wing which helps to enhance the performance of MUAVs.
The Deployment of Drones in Sending Drugs and Patient Blood Samples COVID-19 Anggraeni, Sri; Maulidina, Aulia; Dewi, Mauseni Wantika; Rahmadianti, Salma; Rizky, Yulian Putri Chandra; Arinalhaq, Zulfa Fathi; Usdiyana, Dian; Nandiyanto, Asep Bayu Dani; Al-Obaidi, Abdulkareem Sh. Mahdi
Indonesian Journal of Science and Technology Vol 5, No 2 (2020): IJOST: VOLUME 5, ISSUE 2, 2020
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v5i2.24462

Abstract

At present, most countries all over the world are being hard hit by the COVID-19 pandemic and some even are being hit harder than others. This condition has caused widespread disruption of the economic, social, and educational systems in those countries.  Under these conditions, transportation systems also need to be considered. There are problems of distribution of drugs and kits of test equipment to areas far from large cities in the center of the corona pandemic due to access difficulty. Remote locations, being difficult to reach, make the distribution of drugs and equipment for rapid testing uneven so that the recovery rate of patients in the area has a low percentage. Meanwhile, it is essential to ensure the availability of drugs and rapid test equipment in every public health center in all directions of Indonesia. One possible solution is the use of drones to distribute these things to areas that are difficult to reach. This solution is expected to at least improve healing and reduce mortality for patients infected with COVID-19 in remote areas.
The Effect of Spoiler Shape and Setting Angle on Racing Cars Aerodynamic Performance Eftekhari, Hesam; Al-Obaidi, Abdulkareem Sh. Mahdi; Eftekhari, Shahrooz
Indonesian Journal of Science and Technology Vol 5, No 1 (2020): IJOST: VOLUME 5, ISSUE 1, 2020
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v5i1.22701

Abstract

Automotive racing is one of the favorite sports of human being. There have been many developments in past decades by car engineers to improve the performance of the engine and increase the aerodynamic efficiency of the race cars to achieve a better lap time and get a better placement safely. One of the ways to improve the aerodynamic performance of a race car is to use rear spoilers. This study by using ANSYS FLUENT numerically investigated the effect of the spoiler shape and setting angle on the aerodynamic characteristics of a race car and then it was validated by conducting wind tunnel experiment. Lift and drag coefficient of NACA0012, NACA4412, and S1223 are determined in Reynold’s number of 2×105 as an airfoil and as spoiler on ERC model which is a conceptual car model inspired by Porsche 911. It was found that ERC model with spoiler would have better aerodynamic efficiency compared to ERC model without spoiler. Also, S1223 at -6 degrees was identified as the optimized configuration as it generates the highest downforce. Even though the drag coefficient at this setting angle is slightly higher, but in terms of stability and handling IT is at its best. Overall, this study would help car manufacturers, for racing and commercial purposes, to have a better insight into the effect of spoiler configuration on the aerodynamic performance of cars. Hence, the stability, handling, and efficiency of the cars can be further improved by selecting the suitable spoiler configuration.
Stealth Detection System via Multistage Radar and Quantum Radar Kulshreshtha, Abhijit; Al-Obaidi, Abdulkareem Sh. Mahdi
Indonesian Journal of Science and Technology Vol 5, No 3 (2020): IJOST: VOLUME 5, ISSUE 3, 2020
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v5i3.26806

Abstract

In today’s era of advanced weapons and technology development, many remarkable inventions have shifted the balance of war towards the strategically enhanced military equipped with tactical weapons and armaments. One of these strategic advancements is stealth technology due to which stealth aircraft are high in demand for the military. The question that rises is How to detect a stealth object? This paper proposes a novel anti-stealth technique using void detection, high frequency wave interference and neutrino beam propagation. Void detection method uses a modified satellite-based radar that searches for areas in the aerospace from which the transmitted signals sent to the ground receiving station are blocked or deflected. High frequency wave interference method is used to generate a stellar trajectory of the stealth aircraft at the detected void. Neutrino beam comprises of energy quanta mainly neutrinos, which are able to surpass the absorption or deflection systems in the stealth body of aircraft. This unique phenomenon produces a moving image, which is the precise location of the aircraft in the space. Using these methods, the trajectory of the aircraft is detected which ultimately leads to the detection of the stealth aircraft itself. The newly proposed methods which are theoretically more reliable than the existing methods may not have been tested but the method planning make them practically feasible considering that the technology used is a part of advanced engineering today.  
Isotherm adsorption characteristics of carbon microparticles prepared from pineapple peel waste Nandiyanto, Asep Bayu Dani; Santiuly Girsang, Gabriela Chelvina; Maryanti, Rina; Ragadhita, Risti; Anggraeni, Sri; Fauzi, Fajar Miraz; Sakinah, Putri; Astuti, Asita Puji; Usdiyana, Dian; Fiandini, Meli; Dewi, Mauseni Wantika; Al-Obaidi, Abdulkareem Sh. Mahdi
Communications in Science and Technology Vol 5 No 1 (2020)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1227.71 KB) | DOI: 10.21924/cst.5.1.2020.176

Abstract

The objective of this study was to investigate isotherm adsorption of carbon microparticles from pineapple peel waste. Carbon microparticles were prepared by carbonizing pineapple peel waste at 215-250°C and grinding using a saw-milling process. To investigate adsorption properties of carbon microparticles, experiments were done by evaluating adsorption of curcumin (as a model of adsorbate) in the ambient temperature and pressure under constant pH condition. To confirm the adsorption characteristics, carbon particles with different sizes (i.e., 100, 125, and 200 ?m) were tested, and the adsorption results were compared with several standard isotherm adsorption models: Langmuir, Freundlich, Temkin, and Dubinin- Radushkevich. To support the adsorption analysis, several characterizations (i.e., optical microscope, sieve test, and Fourier transform infrared analysis) were conducted. The adsorption test showed that the adsorption profile is fit to the Freundlich model for all variations, indicating the multilayer adsorption process on heterogeneous surfaces and interactions between adsorbate molecules. The results from other isotherm models also confirmed that the adsorption process occurs physically via Van der Waals force in binding adsorbate on the surface of adsorbent.
The role of mechanical engineering in industry: Review and bibliometric analysis Al-Obaidi, Abdulkareem Sh. Mahdi; Husaeni, Dwi Fitria Al; Setiyo, Muji; Nandiyanto, Asep Bayu Dani
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12619

Abstract

Innovation has shown progress in many sectors, including mechanical engineering which is closely related to industry. Through a literature survey and bibliometric analysis of 1,920 articles sourced from the Scopus database from 2015 to 2024, this paper investigates the role that mechanical engineering plays in industrial progress. The analysis uses VOSviewer for network visualization, overlay, and density maps. According to the findings, mechanical engineering has significantly advanced several important areas, including advanced manufacturing processes, Industry 4.0 and digital transformation, sustainability and circular economy, educational advancement, use of new technologies, and biotechnology innovation. Some of the key findings of this review include the use of digital twins and integrating cyber-physical systems, the use of large-scale 3D printing technology, and the use of sustainable production methods in industry. According to the analysis, the number of publications and citations has increased, with a slight decrease during the COVID-19 pandemic. Visualizing this bibliometric map helps understand current trends, identify potential research areas, and highlight relationships between research issues.
The Journal of Engineering, Science and Technology (JESTEC): A Bibliometric Insight into Materials Research Trends and Innovation to Support Sustainable Development Goals (SDGs) Al-Obaidi, Abdulkareem Sh. Mahdi
ASEAN Journal for Science and Engineering in Materials Vol 5, No 1 (2026): (ONLINE FIRST) AJSEM: Volume 5, Issue 1, March 2026
Publisher : Bumi Publikasi Nusantara

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Abstract

This study presents a bibliometric analysis of materials-related research published in the Journal of Engineering Science and Technology (JESTEC) from its inception until 2025. The analysis covers publications indexed in Scopus from 2009 to July 2025, totaling 3,825 documents, of which a substantial subset is dedicated to materials science and engineering. Data were retrieved using JESTEC ISSN in the Scopus database and filtered using keywords such as “material”, in which this is appropriate to include term of materials engineering, composite, and nanomaterial. Findings reveal that materials science has become a significant research domain in JESTEC, with topics ranging from adsorption and composite fabrication to renewable materials and nanotechnology applications. The analysis also shows a growing alignment of research with the Sustainable Development Goals (SDGs), particularly in sustainable production, environmental protection, and energy efficiency. These results highlight JESTEC’s role as a platform for advancing interdisciplinary materials research and its contributions toward global sustainability targets.
Journal of Engineering, Science and Technology at the Crossroads of Science and Education: A Bibliometric Review (2009–2025) Al-Obaidi, Abdulkareem Sh. Mahdi
ASEAN Journal of Educational Research and Technology Vol 4, No 3 (2025): (ONLINE FIRST) AJERT: VOLUME 4, ISSUE 3, December 2025
Publisher : Bumi Publikasi Nusantara

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Abstract

This study presents a bibliometric analysis of publications in the Journal of Engineering, Science and Technology (JESTEC) indexed in Scopus from 2009 to July 2025, consisting of 3,825 documents. The analysis explores publication trends, geographic distribution, citation metrics, keyword frequency, and thematic clusters. Findings reveal a steady growth in international authority and highlight the increasing prominence of education-related research, particularly in topics aligned with the Sustainable Development Goals (SDGs), such as energy systems, waste valorization, and digital tools. Notably, 964 documents (over 25% of total publications) were identified as education-focused, with a peak in 2023. This trend underscores JESTEC's evolving role as not only a scientific journal but also a platform for educational innovation. The study suggests that JESTEC could further enhance its impact by formally recognizing education-driven research within its editorial direction, reflecting the real-world application of science and engineering through instructional design and training.
Co-Authors Al Husaeni, Dwi Fitria Arinalhaq, Zulfa Fathi Asep Bayu Dani Nandiyanto Astuti, Asita Puji Budiman, Bentang Arief Dewi, Mauseni Wantika Dian Usdiyana Eftekhari, Hesam Eftekhari, Shahrooz Fauzi, Fajar Miraz Fiandini, Meli Girsang, Gabriela Chelvina Santiuly Hofifah, Siti Nur Kulshreshtha, Abhijit Maulidina, Aulia Muji Setiyo Putri, Silmi Ridwan Ragadhita, Risti Rahmadianti, Salma Rina Maryanti Rizky, Yulian Putri Chandra SAKINAH, PUTRI Santiuly Girsang, Gabriela Chelvina Sri Anggraeni Triawan, Farid