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All Journal Asskruie: Jurnal Pengabdian Kepada Masyarakat IJMST
Kormil Saputra
Universitas Mataram
Computer Science & IT Education Social Sciences

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Strengthening Disaster Resilient Schools through Earthquake Mitigation Socialization at SMAN 1 Kuripan, Lombok Muhammad Jarul Rozki; Ahmad Rifaldi Arahman; Nela Ranita Amanda; Zyiadatun Adawiah; Ayu Mona Erisa Marpaung; Siti Azizah; Syamsuddin; Suhayat Minardi; Alfina Taurida Alaydrus; Rahmatun Inayah; Ika Umratul Asni Aminy; Adella Ulyandana Jayarti; Kormil Saputra
Asskruie: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 1 (2025): November
Publisher : Saniya Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65190/asskruie.v3i1.445

Abstract

Indonesia is a country with high tectonic activity and frequently experiences earthquakes that can result in significant damage and casualties. One of the earthquake-prone areas is West Lombok Regency, West Nusa Tenggara. To increase disaster awareness and preparedness, an earthquake mitigation outreach program was conducted at SMA Negeri 1 Kuripan. This activity used a participatory–educational approach through interactive presentations, discussions, and the delivery of material using the educational song “Kalau Ada Gempa” from BMKG. The results of the activity show an improvement in students’ understanding and enthusiasm regarding mitigation measures and the importance of preparedness within the school environment. This program is expected to serve as an initial step toward developing a disaster-resilient school in West Lombok.
Vibrational, Optical Band Gap, Urbach Energy, and Thermal Activation Analysis of TiO2/CaTiO3 Perovskite Kormil Saputra; Dian Wijaya Kurniawidi; Aws M Aseer Nejres
Indonesian Journal of Modern Science and Technology Vol. 2 No. 1 (2026): January
Publisher : CV. Abhinaya Indo Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64021/

Abstract

TiO₂/CaTiO₃ is an oxide perovskite with considerable potential for photocatalytic, optical-sensing, and semiconductor-based functional-material applications. This study aimed to evaluate the vibrational characteristics, optical properties, band gap energy, Urbach energy, and kinetic and activation thermodynamic parameters of TiO₂/CaTiO₃.. The material was characterized using FTIR, UV–Vis spectroscopy, Kubelka–Munk analysis, Tauc plots, and Differential Thermal Analysis (DTA). The FTIR results revealed characteristic absorption bands in the low-wavenumber region associated with Ti–O, Ti–O–Ti, and Ca–O–Ti vibrations, indicating the formation of the TiO₂/CaTiO₃ perovskite framework. The UV–Vis spectrum showed dominant absorption in the ultraviolet region with an extension toward the visible region. Kubelka–Munk analysis yielded direct and indirect band gap energies of 2.896 and 2.897 eV, respectively, whereas the Tauc-plot method produced values of 2.894 and 2.896 eV. The Urbach energies obtained using the Kubelka–Munk approach ranged from 0.173 to 0.189 eV, while the Tauc-plot approach yielded 0.449–0.686 eV. These differences demonstrate the sensitivity of the estimation method to the baseline and fitting region and indicate the presence of tail states associated with optical disorder. DTA analysis showed a peak temperature of 623.31 K, with Ea = 7.853 kJ mol-1, ΔH* = 1.511 kJ mol-1, ΔG* = 233.89 kJ mol-1, ΔS* = −301.26 J mol-1 K-1, and ln A = −5.238. Overall, TiO2/CaTiO3 exhibited vibrational, optical, and thermal characteristics that support its potential as an oxide-perovskite functional material.
Co-Authors Adella Ulyandana Jayarti Ahmad Rifaldi Arahman Alfina Taurida Alaydrus Aws M Aseer Nejres Ayu Mona Erisa Marpaung Dian Wijaya Kurniawidi Ika Umratul Asni Aminy Muhammad Jarul Rozki Nela Ranita Amanda Rahmatun Inayah Siti Azizah Suhayat Minardi Syamsuddin Syamsuddin Zyiadatun Adawiah