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PROGRAM STUDI FISIKA FAKULTAS MATEMATIKA ILMU PENGETAHUAN ALAM DAN KEBUMIAN UNIVERSITAS NEGERI MANADO Jl. Kampus Unima, Kel. Koya, Kec. Tondano Selatan, Minahasa, Indonesia
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Jurnal FisTa : Fisika dan Terapannya
Published by Universitas Negeri Manado
ISSN : -     EISSN : 27471691     DOI : https://doi.org/10.53682/fista.xxxx.xxx
Core Subject : Science, Engineering,
Astronomy Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics
Jurnal FisTa : Fisika dan Terapannya merupakan salah satu Jurnal Nasional dalam bidang Ilmu Fisika dan Terapannya di bawah pengelolaan Program Studi Fisika Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado. Jurnal FisTa : Fisika dan Terapannya memiliki nomor eISSN 2747-1691. Jurnal FisTa : Fisika dan Terapannya diterbitkan pertama kali pada tahun 2020. Hal ini dilakukan, untuk merespon para mahasiswa, dosen dan juga peneliti di bidang Fisika dan Terapannya untuk dapat membagi hasil penelitiannya dalam bentuk artikel ilmiah. Ruang lingkup artikel dalam Jurnal FISTA Fisika dan Terapannya adalah Ilmu Fisika dan Terapannya, diantaranya terkait dengan topik : Fisika Material; Fisika Teori; Fisika Material Lunak; Fisika Komputasi; Fisika Instrumentasi; Astronomi; Fisika Koloid; Geofisika; Elektronika: Fisika terapan terkait lainnya.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 103 Documents
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Desain Antena Mikrostrip Segitiga Sama Sisi sebagai Pendeteksi Partial Discharge Massang Lumembang, Megastin; Pongsapan, Fajar Pratama
Jurnal FisTa : Fisika dan Terapannya Vol 6 No 2 (2025): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v6i2.512

Abstract

Partial discharge (PD) is a phenomenon that can degrade the insulation system of high-voltage equipment. Early detection of PD requires sensors with high sensitivity in the Ultra High Frequency (UHF) range. This study proposes an equilateral triangular microstrip antenna optimized to operate at 2.45 GHz using an FR-4 substrate (εr = 4.4, thickness 1.6 mm). The side length of the triangular patch was calculated to be 42 mm to achieve resonance at the target frequency. Analysis results indicate that the antenna exhibits a Return Loss of less than -10 dB and a VSWR of less than 2 at the operating frequency, fulfilling the requirements for PD detection applications. This design contributes to the development of compact and cost-effective UHF sensors for condition monitoring of high-voltage equipment, and offers an alternative approach to the development of resonant antennas at 2.45 GHz for microstrip antenna-based PD detection systems.
Karakterisasi Elastisitas Karet Alam dari Castilla elastica melalui Uji Tarik Beban Bertahap Ely , Sufilman; Akyuwen, Frandy; Kaloari, Ruth Meisye
Jurnal FisTa : Fisika dan Terapannya Vol 6 No 2 (2025): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v6i2.531

Abstract

This study aims to test the elasticity properties and calculate the elastic modulus (Young's modulus) of natural rubber produced by Castilla elastica trees that grow naturally in Hila Village, Ambon Island. This plant is an alternative source of rubber that has not been widely utilized in Indonesia. The research was conducted using quantitative experimental methods in a laboratory where sap from the Castilla elastica tree was tapped, dried, and formed into uniform-sized rubber strips. Elasticity tests were carried out by applying gradual loads to each sample and measuring the increase in length due to strain. The results showed that rubber from Castilla elastica has high tensile strength but a relatively low elastic modulus, ranging from 5,416 to 16,263 N/m². This value is significantly lower than the elastic modulus of natural rubber from Hevea brasiliensis, which typically ranges between 0.32–0.42 MPa. The decrease in modulus with increasing load indicates the non-linear elastic behavior of the material. These results suggest that rubber derived from Castilla elastica is soft and has potential applications in lightweight elastic products. These characteristics indicate its potential utilization as a base material for the fabrication of lightweight elastomeric products such as flexible protective membranes, elastic adhesive coatings, soft sleeves or gaskets, and lightweight vibration-damping pads in mechanical systems.
Tinjauan Tentang Potensi Suseptibilitas Magnetik dalam Monitoring Polusi Sedimen Sungai Pangkey, Mipantria Gabriela; Virgin, Meyke; Sayenne Givenshe Pungus; Derek, Glladyvio; Lucas, Bill Ryan; Loding, Intan Eka Audrey; Tiwow, Vistarani Arini
Jurnal FisTa : Fisika dan Terapannya Vol 6 No 2 (2025): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v6i2.539

Abstract

A literature review of the magnetic mineral properties of river sediments using magnetic susceptibility parameters was conducted to assess their potential for pollution monitoring. This study analyzed 28 articles published in journals/proceedings related to the topic of magnetic susceptibility of river sediments. Based on the results of the literature review, the magnetic susceptibility values ​​of river sediments show a high range. This means that with such (high) susceptibility values, river sediments are ferrimagnetic. Information obtained from magnetic susceptibility data of river sediments indicates a high Fe content. We also describe that there are frequency-dependent magnetic susceptibility (χFD) values ​​of more than 2 % in river sediments containing superparamagnetic grains (fine grains). River sediments with high susceptibility values and high Fe content can indicate that the river has been polluted.

Page 11 of 11 | Total Record : 103

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