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All Journal Jurnal Rekayasa Material, Manufaktur & Energi Journal of Community Service and Empowerment
Xaviera, Allodya Nadra
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Aerospace Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Social Sciences Other

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Sintesis BaM/PAni Doping Cu Optimasi Sifat Radar Absorbing Material Pada Aplikasi Pelapisan Alpalhankam Aritonang, Sovian; Xaviera, Allodya Nadra; Devina, Ardelia; Br Panjaitan, Thesalonika; Nareswari, Vania Agatha
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17317

Abstract

Defense technology known as stealth technology aims to reduce the response of electromagnetic waves emitted by radar so that the position or location of an object is not detected. Barium Hexaferite has properties as a Radar Absorbing Material (RAM). Research on radar absorbing matrial from barium hexaferite already exists, but those using cu doping do not yet exist. In order to increase the effectiveness of its absorption, Barium Hexaferite is doped with Cu metal synthesized by coprecipitation method. Aniline polymerization was carried out with BaM to form BaM/PAni composite. Characterization of composite synthesis samples and coating results were carried out by SEM, FTIR, LCR-meter, and VNA to identify chemical bonds, electrical conductivity properties, microstructure, and reflection loss properties of RAM composite samples. Based on the results of previous research, the optimal absorption of multilayer coatings on steel with a reflection loss of -49.028 dB was obtained with an absorption frequency of 8.2 GHz. The addition of Cu doping is expected to improve the material's ability to absorb radar waves and reduce object reflections.
Safety induction for agricultural workers in particular areas of Gadog Village in handling hazardous agrochemical exposures Xaviera, Allodya Nadra; Hijrianisa, Alya; Lubis, Astrid Blandina Cynthia; Stiawan, Elva; Gunaryo, G.
Journal of Community Service and Empowerment Vol. 5 No. 2 (2024): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jcse.v5i2.30180

Abstract

An integrated program of community service and chemical teaching has been conducted to deliver proper information to handle chemical agents that are commonly used in agricultural activities. This initiative addresses the limitation of chemical understanding among local farmers and livestock breeders regarding the safety aspect of common agrochemicals, leading to either health risks or environmental problems. Knowledge regarding agrochemical handling and disposal was delivered through presentations, discussions, and hands-on practices. Accordingly, through this community service, we encouraged agricultural workers with a basic understanding of the chemical properties of hazardous agrochemicals and the safety induction in handling and disposing of those compounds. Based on the activities carried out, the results of the pre-test and post-test showed an increase of 62% in farmers' understanding of hazardous chemicals and proper handling of these chemicals. In addition to providing some beneficial scientific information to enhance agricultural workers’ safety in their working area, an activity related to education and training of agrochemicals could increase peoples’ awareness toward hazardous chemicals that would be still freely commercialized, for example, in terms of mitigating risks associated with chemical threats.
Co-Authors Aritonang, Sovian Br Panjaitan, Thesalonika Devina, Ardelia Elva Stiawan Gunaryo, G. Hijrianisa, Alya Lubis, Astrid Blandina Cynthia Nareswari, Vania Agatha