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Assembly of Disaster Evacuation Signs for Disaster Mitigation at State Vocational School 2, Tangerang City Aryana Rachmad Sulistya; Kemala Hayati; Tiara Ramadhanti; Muhammad Sulthon Abdussalam; Putu Ayu Cintya Maharani; Kurniawan Fitri Nugroho; Irwan Febry Armansyah
Warta LPM WARTA LPM, Vol. 29, No. 1, Maret 2026
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/warta.v29i1.15118

Abstract

Disasters in Tangerang City from 2019-2024 are very diverse, including floods, earthquakes, extreme weather, and landslides and others. Disasters cause losses in terms of infrastructure, loss of life, and other losses. At schools, students, teachers and school employees are at high risk of disaster. One form of disaster mitigation carried out in SMK Negeri 2 Tangerang city is the assembly of signs (equipment) supporting disaster evacuation. The assembly of disaster evacuation support signs aims to support disaster mitigation and reduce losses caused during disasters. (1) Background of the problem: Disaster mitigation at State Vocational School 2 is necessary due to the lack of proper disaster evacuation route signs at all locations. This is being achieved by installing evacuation signs. (2) Objectives: this study aims to examine the assembly of disaster evacuation signs for disaster mitigation and its benefits (advantages) in SMK Negeri 2 Tangerang City. (3) Methods: The method used is direct observation and collaborative method (4) Result : The design of disaster evacuation signs using standard provisions to support disaster mitigation. Assembly of disaster evacuation signs that have been carried out at SMK Negeri Negeri 2 Tangerang City for disaster mitigation include: 1) flat right evacuation route; 2) flat left evacuation route; 3) emergency exit; 4) right evacuation route down; 5) instructions/how to use light fire extinguishers (APAR); 6) evacuation route to the right (plank); 7) evacuation route to the left (plank); and 8) assembly point. The installation of evacuation signs has a positive impact on disaster preparedness and mitigation efforts for SMK Negeri 2 Kota Tangerang. (5) Conclusion : All disaster evacuation signs have been installed and provide many benefits for the academic community of SMK Negeri 2 Kota Tangerang.
Chemical Composition Analysis and Heat Absorption Potential of Andesite Stone as Absorber Material in Thermoelectric Generators Septiannissa Azzahra; Samsurizal; Aryana Rachmad Sulistya; Azli bin Yahya
ZETROEM Vol 8 No 2 (2026): ZETROEM
Publisher : Prodi Teknik Elektro Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/ztr.v8i2.7998

Abstract

The performance of thermoelectric generators is strongly influenced by heat absorption and thermal management on the hot side because these factors determine the temperature gradient and electrical energy output produced. Conventional ceramic materials commonly used as thermal media generally have high production costs and limited heat absorption capacity creating the need for alternative materials that are natural economical and sustainable. This study investigates andesite stone as a potential natural heat-absorbing material for thermoelectric generators through chemical composition analysis using the X-ray fluorescence method. The results show that the andesite sample is dominated by silica and alumina forming a stable aluminosilicate structure. Other identified compounds include iron oxide calcium oxide and magnesium oxide. Iron oxide contributes to increased radiation heat absorption through higher emissivity while calcium oxide and magnesium oxide improve crystal lattice stability and resistance to thermal shock. The very low loss on ignition value of 0.02% indicates minimal volatile compounds suggesting excellent thermal and chemical stability at high temperatures. Based on the relationship between composition and material properties the studied andesite stone is estimated to have moderate thermal conductivity and effective thermal buffering capability which are beneficial for maintaining a stable temperature gradient in thermoelectric generator systems. Overall these findings indicate that andesite stone has strong potential as a natural heat-absorbing or coating material in thermoelectric generator applications and can become a more economical and environmentally friendly alternative to conventional synthetic ceramic materials for future sustainable energy systems and broader industrial thermal applications worldwide.