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All Journal Magnetic: Research Journal of Physics and It’s Application Jurnal Riset Fisika Indonesia
Yunita Enzelina Silaban
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Astronomy Computer Science & IT Earth & Planetary Sciences Materials Science & Nanotechnology Physics

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Analisis Tingkat Kebisingan di Tempat Bermain Anak X Di Kota Palangka Raya Yunita Enzelina Silaban; Akhmadi Surya Nata; Uci Purnama Purba; Reni Agustiani
Jurnal Riset Fisika Indonesia Vol 4 No 2 (2024): Juni 2024
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v4i2.5272

Abstract

Children's play areas that exceed the Noise Limit Value (NTV) can cause hearing health problems, including physiological and communication disorders. Therefore, this study aims to evaluate the noise level at one of the X children's playgrounds in Palangka Raya City which is busy with visitors. This research is important for playground owners to create a safe and comfortable environment for visitors. Noise levels are measured using a sound level meter which is then analyzed to determine the average noise value at each data collection point. Based on the analysis carried out, it shows that the average noise value at children's playground X in Palangka Raya City on weekdays is 79.52 dBA, while on holidays it reaches 81.76 dBA. This value exceeds the threshold recommended by the World Health Organization (WHO) and the Indonesian Ministry of Health for recreational areas which should be in the range of 70 dB. Based on this research, it is recommended that management take mitigation steps such as using building materials that absorb sound, limiting children's play time, and providing ear protection for zones with high noise levels.
Rancang Bangun Prototipe Sistem Pencitraan Bawah Tanah dengan Metode Electrical Resistence Tomography Pebriyanto, Yunus; Wilson Jefriyanto; Yoan Theasy; Yunita Enzelina Silaban; Salsa Ayudhia Pratama
Magnetic: Research Journal of Physics and It’s Application Vol. 6 No. 1 (2026): Magnetic: Research Journal of Physics and It’s Application
Publisher : Program Studi Fisika - Universitas San Pedro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59632/magnetic.v6i1.755

Abstract

Electrical Resistivity Tomography (ERT) is a geophysical method used to image subsurface structures based on the distribution of material resistivity by injecting electrical current and measuring the resulting potential at the surface. Although widely applied in subsurface exploration, the use of ERT in academic environments is still limited due to the high cost of commercial equipment. Therefore, this study aims to design and develop a laboratory-scale prototype of a subsurface imaging system based on the ERT method as an educational and practical learning tool. The research employed a Research and Development (R&D) method combined with an experimental approach, including the stages of design, fabrication, testing, and calibration of the prototype. Experimental measurements were conducted on homogeneous soil media and soil media with artificial anomalies using Wenner and Wenner–Schlumberger configurations. The acquired data were processed using RES2DINV software to produce two-dimensional subsurface images. The results indicate that the developed prototype is capable of detecting resistivity anomalies effectively, although relatively high inversion errors were observed due to laboratory-scale limitations. Overall, the proposed ERT prototype is suitable as a supporting tool for geoelectrical learning and subsurface exploration practicum.
Co-Authors Akhmadi Surya Nata Pebriyanto, Yunus Reni Agustiani Salsa Ayudhia Pratama Uci Purnama Purba Wilson Jefriyanto Yoan Theasy