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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Tumata Jurnal
Ibrohim, Maulana
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Arts Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Physics

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Preventive Conservation Of The Weapons At The Central Museum Of The Indonesian National Army Force (TNI AD) “Dharma Wiratama” Yogyakarta Ibrohim, Maulana; Ratnaningtyas, Yohana Ari; Kirana, Dian Ajeng
TUMATA: Journal of Cultural and Arts Management Vol 1, No 02 (2023): Desember 2023
Publisher : Institut Seni Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24821/tumata.v1i02.13111

Abstract

The Central Museum of the Indonesian National Army Dharma Wiratama Army is one of the museums whose management is under the auspices of the Army and whose direction is managed by the Central Museum and Monuments of the Army History Service. The primary collection is the longbarreled weapons used by the Army during the era of independence until now. Preventive conservation is a conservation action categorized as the most essential action or category. Museum staff can carry out preventive conservation without having to study this knowledge in depth. This research was carried out to determine how preventive conservation actions or activities were carried out on the weapons collection at the Dharma Wiratama TNI AD Museum. They are using qualitative methods with a case study type. Interviews, observation, and document study are the data collection methods used in this research. The research results show that several agents of damage occur in museums, namely physical forces and theft, pollutants, humidity, ultraviolet light, and temperature. Preventive conservation actions or activities by the Dharma Wiratama TNI AD Museum. Includes security, controlling temperature, humidity, lighting, and moving or transporting collections.
Enhanced Ethanol Gas Sensor Performance through Adsorption Energy Analysis of Gd-Doped LaFeO3 with rGO Coating: A Density Functional Theory Study Ibrohim, Maulana; Setiawan, Andhy; Waslaluddin, Waslaluddin; Mauludin, Taufik Syah; Suhendi, Endi; Aminudin, Ahmad
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 13 No 1 (2024): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v13i1.17909

Abstract

LaFeO3 (LFO) is commonly used as a material for gas sensor applications. However, the LFO material in ethanol gas sensor applications can still improve sensitivity and selectivity parameters. Gadolinium (Gd) doping is widely used in gas sensor applications to increase the sensitivity of gas sensors. In addition, reduced graphene oxide (rGO) materials are commonly used in gas sensor applications to increase gas sensors' selectivity, sensitivity, and working temperature. This study analyzed the effect of Gd doping (LGFO) and the addition of an rGO single layer on LFO material (LGFO@rGO) on sensitivity and selectivity based on the adsorption energy of the system with ethanol gas molecules. Density Functional Theory studies were conducted to yield insight into the LGFO or LGFO@rGO – ethanol gas interactions and the sensitivity and selectivity improvement by changing adsorption energy. Based on the analysis, the presence of Gd doping and single-layer rGO could increase the adsorption energy. The addition of the rGO layer showed an escalation of the adsorption energy of about 9.45%, 2.49 eV in the LGFO to -2.75 eV LGFO@rGO. This improved adsorption capacity translates to a higher sensitivity for detecting lower concentrations of ethanol gas. This result shows the potential of LGFO and LGFO@rGO as ethanol gas sensor materials.
Co-Authors Ahmad Aminudin Andhy Setiawan E. Suhendi Kirana, Dian Ajeng Mauludin, Taufik Syah Ratnaningtyas, Yohana Ari Waslaluddin MT