Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Jurnal Fisika dan Terapannya Jurnal Ilmu Pengetahuan dan Teknologi Bagi Masyarakat Pinisi: Physics Journal
Utami, Ni Wayan Mega Savira
Unknown Affiliation
Humanities Earth & Planetary Sciences Education Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Utilization of Atomic Nucleus Fission Reactions in Energy Conversion Systems of Nuclear Power Plants Jamaluddin, Indah Hamdhani; Karnila; Greys, Priskilya; Utami, Ni Wayan Mega Savira
Pinisi: Physics Journal Vol. 1 No. 1 (2025): Pinisi: Physics Journal
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to review scientific articles that are relevant and related to the utilization of atomic nucleus fission reactions in energy conversion systems in Nuclear Power Plants (NPPs) and the environmental impact of radioactive waste management. The research method used in writing this article is literature review. The literature search focused on the keywords “nuclear fission reaction”, “nuclear power plant energy conversion”, and “radioactive waste”, resulting in a total of 15 articles and 2 book. Based on the results of the literature review analysis, it is concluded that: (a) The atomic nucleus fission reaction is the main basis for energy production in nuclear power plants with high efficiency. (b) The energy conversion system in nuclear power plants involves thermodynamic processes and turbine-generators to convert heat energy into electricity. (c) Radioactive waste management requires advanced technology and strict policies to minimize environmental impact. (d) NPPs has great potential as a clean energy source, but the main challenge lies in handling nuclear waste and reactor safety.
Pelatihan Pembuatan Eksperimen Fisika Digital dengan Arduino di Tinkercad untuk Meningkatkan Kompetensi Calon Guru Riskawati, Riskawati; Sanusi, Dirgah Kaso; Utami, Ni Wayan Mega Savira; Irfanita, Resky
Jurnal IPMAS Vol. 6 No. 1 (2026): Januari - April 2026
Publisher : Pustaka Digital Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54065/ipmas.6.1.2026.1064

Abstract

Kegiatan pengabdian ini bertujuan untuk meningkatkan kompetensi calon guru fisika dalam merancang dan mengimplementasikan eksperimen fisika digital berbasis Arduino dan Tinkercad. Mitra kegiatan adalah 70 mahasiswa semester 1 Universitas Negeri Makassar yang sedang memprogram mata kuliah Fisika Dasar dan mengalami beberapa permasalahan utama: (1) terbatasnya fasilitas laboratorium sehingga mahasiswa minim pengalaman praktik eksploratif, (2) rendahnya keterampilan merancang eksperimen mandiri, dan (3) kurangnya pengalaman dalam pemrograman mikrokontroler serta penggunaan media komputasi fisik. Untuk menjawab permasalahan tersebut, tim pelaksana dan mitra menyepakati solusi berupa pelatihan intensif satu hari melalui metode experiential learning yang mencakup sesi teori, demonstrasi, praktik merakit rangkaian LED, serta penulisan kode Arduino untuk menghasilkan efek LED berkedip dan memudar. Pelaksanaan kegiatan dilakukan melalui demonstrasi langsung, kerja kelompok, simulasi pada Tinkercad, diskusi, dan refleksi. Evaluasi menggunakan instrumen pretest–posttest, rubrik psikomotor, lembar observasi kolaboratif, dan kuesioner afektif. Hasil kegiatan menunjukkan peningkatan pemberdayaan mitra secara terukur: (1) aspek kognitif meningkat signifikan sebesar +72,9% (skor 48 ? 83), (2) 90% peserta berhasil merakit rangkaian dengan benar dan 85% mampu memodifikasi parameter PWM secara mandiri, (3) 95% peserta menunjukkan peningkatan motivasi dan minat terhadap pembelajaran fisika berbasis teknologi, serta (4) kolaborasi kelompok tercapai pada tingkat 92% sesuai indikator observasi. Secara keseluruhan, pelatihan ini tidak hanya meningkatkan pemahaman konsep dasar elektronika dan fisika, tetapi juga memberdayakan mahasiswa sebagai calon guru dengan keterampilan komputasi fisik, kreativitas digital, dan kemampuan integrasi teknologi dalam pembelajaran abad ke-21.
Sintesis Koloid Nanopartikel Bismut: Peran Citrus limon dan Optimasi Daya serta Waktu Pemanasan Gelombang Mikro Utami, Ni Wayan Mega Savira; Wahyuna Nur; Sukmawati Said
JFT : Jurnal Fisika dan Terapannya Vol 12 No 2 (2025)
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v12i2.60550

Abstract

This study successfully synthesized bismuth nanoparticle colloids using citrus limon extract through a microwave heating method. Microwave heating was used as the main factor controlling the particle formation process, so variations in power and heating time were examined to determine their effect on the characteristics of the resulting nanoparticles. The synthesis was carried out by dissolving bismuth powder (Bi(NO₃)₃·5H₂O) into citrus limon extract. The mixture was then heated using microwaves at powers of 100, 300, 450, 600, and 800 W for 1, 3, 5, 7, and 10 minutes. Characterization was performed using UV-Vis, XRD, and TEM to observe the optical properties, crystal structure, and particle morphology and size. The results show that the optimum condition was achieved at 800 W for 5 minutes, marked by a change in the color of the solution to black and maximum absorbance at a wavelength of 272 nm (2,680 a.u.). XRD analysis showed diffraction peaks at 2θ = 27.4°; 38.1°; and 40.0°, corresponding to the hkl planes (012), (104), and (110), confirming the characteristic trigonal crystalline structure of bismuth based on JCPDS standard No. 44-1246. TEM images show a dominant spherical particle morphology with an average size of 33.19 nm. These results prove that microwave heating is capable of accelerating and stabilizing the synthesis of citrus limon extract-based bismuth nanoparticle colloids, producing stable nanoparticles with good morphology.
Co-Authors Greys, Priskilya Irfanita, Resky Jamaluddin, Indah Hamdhani Karnila Riskawati Riskawati, Riskawati Sanusi, Dirgah Kaso Sukmawati Said Wahyuna Nur