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All Journal Jurnal Fisika FLUX SEJ (Science Education Journal) Jurnal Penelitian Pendidikan IPA (JPPIPA) JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Eduproxima : Jurnal Ilmiah Pendidikan IPA Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Journal Pharmasci (Journal of Pharmacy and Science) BIOCHEPHY: Journal of Science Education Jurnal Pijar MIPA Panrita Inovasi: Jurnal Pengabdian Kepada Masyarakat SWARNA: Jurnal Pengabdian Kepada Masyarakat
Septiana Kurniasari
Universitas Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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DENTAL X-RAY RADIATION EXPOSURE IN RADIOPROTECTION CASES AND DENTAL IMAGES REPEATABILITY FACTORS Asmiati Amir; Muhammad Yunus; Septiana Kurniasari; Citron Supu Payu
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 6, No 1 (2024)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v6i1.5123

Abstract

This research was carried out using a literature review method to determine radioprotection cases and repeatability factors of dental images on dental X-rays. Determination of the repeatability factor for dental photographs using data over three months obtained at Rajawali Citra Hospital, RSUD Dr. Tjitrowardojo Purworejo, and RSUD Muntilan Magelang. Case A, case B, and case C produce high percentage values. This is because dental practitioners consider the provision of protection in reducing the scattered dose of dental X-rays for patients to be often overlooked. Determination of X-ray radiation exposure given by a radiographer does not have significant differences for each patient, such as thin, standard, and obese. Meanwhile, the data on the percentage value of repetition of dental images exceeds the Minimum Hospital Service Standard indicator limit by the Decree of the Minister of Health Number 129 of 2008 concerning the incidence of X-ray service failure, which has a photo failure standard of ≤ 2%. The highest position factor was obtained at Hospital-2 at 75%, and the lowest was obtained at Hospital-1 at 50%. Meanwhile, the highest exposure factor was obtained at Hospital-1 at 39% and the weakest at Hospital-2 at 25%. Position errors made by the radiographer cause position factors, and exposure errors are caused by exposure factors that are too high or low.
ELECTROMAGNETIC RADIATION OF EXTREMELY LOW FREQUENCY (ELF) Septiana Kurniasari; Mursalin Mursalin; Kisman R. Akuba; Devi Triana Paputungan; Rila Virna; Muhammad Yunus
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 6, No 1 (2024)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v6i1.5088

Abstract

The spectrum emitted by electromagnetic wave radiation has various frequencies, one of which is Extremely Low Frequency (ELF), and is often found in educational environments, originating from various electronic devices, high voltage electrical panels, and internet network supporting devices. Based on this description, it is necessary to measure ELF electromagnetic radiation in the Faculty of Mathematics and Natural Sciences environment at Universitas Negeri Gorontalo. This research was carried out by measuring magnetic field values (µT) at 42 location points using a Portable Electromagnetic Field Tester (EMF Tester). The research results show that all of these location points are within the safe threshold based on ICNIRP and WHO regulations, namely below 200 µT, with the highest ELF magnetic field value is 2.81 µT, and the lowest ELF magnetic field value is 0.003 µT. However, there are several studies showing that exposure to ELF electromagnetic field radiation can produce free radicals, causing cell damage. The results of this research can be used as a basis for making health policies for the Faculty of Mathematics and Natural Sciences academic community at Universitas Negeri Gorontalo.
Penentuan Distribusi Suhu pada Pelat Logam dengan Cara Menyelesaikan Persamaan Diferensial Eliptik Menggunakan Microsoft Excel Lukman Samatowa; Septiana Kurniasari; Muhammad Yunus; Relita Damopolii
JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Vol 11 No 1 (2023)
Publisher : Pendidikan Fisika UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jpf.v11i1.36382

Abstract

This study aims to visualize the temperature distribution on metal plates by solving elliptic differential equations using the help of the Microsoft Excel program. Many physics problems have limited analytic solutions so a numerical solution is needed. One of them is about the temperature distribution on a homogeneous metal plate in a steady-state conditionThe equation of heat flow in steady-state conditions is an elliptic partial differential equation (PDE). By solving this equation, we will have a numerical model of the plate that can be a mesh with a certain temperature point. Each point has been known to calculate the temperature value. The temperature value influenced. The Temperature value influenced borders on the plate and the presence of heat generation. The edge of the plate can be a constant temperature, a convection zone with the outside air, or an isolated edge. This model is then processed using Microsoft Excel with the iteration calculation until the temperature distribution value is obtained. The results obtained a graphical visualization of temperature distribution on the plate.
Vertical Sediment Drilling Technique in Fish-Pond Areas of Lake Limboto Muhlis Ali; Raghel Yunginger; Septiana Kurniasari; Indriati Martha Patuti; Idawati Supu; Nurfitri Abd Gafur; Mursalin Mursalin; Mohamad Jahja; Andi Indra Wulan Sari Ramadani
BIOCHEPHY: Journal of Science Education Vol. 6 No. 1 (2026)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v6i1.1906

Abstract

Lake Limboto in Gorontalo is an essential ecosystem for local communities, particularly fishermen, yet fish-pond activities have increased sedimentation and accelerated the lake's degradation. Effective conservation efforts require sediment-characterization analysis, including vertical sediment profiles in pond areas, which has been limited by the lack of appropriate drilling techniques. This study aims to evaluate a vertical sediment-sampling technique in fish-pond zones using a survey method and shallow drilling with an XY-1A spindle-type drilling machine at depths of 1–15 meters. The results indicate that drilling stability is strongly influenced by the structural integrity of the machine's support base, particularly due to water currents and waves in the lake. This drilling technique is recommended for sediment sampling in Lake Limboto, especially in pond areas, and contributes to the advancement of sediment-drilling methods in similar aquatic environments.
Co-Authors Achmad Fairuz Zabadi Andi Indra Wulan Sari Ramadani Asmiati Amir Bunga Tang Citron S Payu Devi Triana Paputungan Dewa Gede Eka Setiawan Fatimah K Hentihu Hendra Hendra Henry Prasetyo Prasetyo I Made Hermanto Indriati Martha Patuti Irsan Rahman Jahja, Mohamad Kisman R. Akuba Lukman Samatowa Moh Arif Alfan Habibi Muhammad Yunus Muhlis Ali Mursalin Nancy Katili Nina Shaqina Anggo Nurfitri Abd Gafur Nursia Madjid Raflin Hamzah Taib Relita Damopolii Rila Virna Samad Kadir Sintia Nasir Hasani Supartin Supartin Supu Idawati Syahdad Aziz Tirtawaty Abdjul Yusuf H. Usman