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INDONESIA
Phi : Jurnal Pendidikan Fisika dan Terapan
Published by Universitas Islam Negeri Ar-Raniry Banda Aceh
ISSN : 24604348     EISSN : 25497162     DOI : -
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering Physics Other
Jurnal Phi teregistrasi dengan ISSN : 2549-7162 (daring) dan ISSN : 2460-4348 (cetak) adalah jurnal yang mempublikasikan hasil-hasil riset dalam lingkung fisika dan pendidikan fisika yang berdampak pada pengetahuan dan teknologi. Kami tidak menerima tulisan yang masih berupa hasil pendahuluan atau tidak mengandung kebaruan. Jurnal Phi juga mempublikasikan penelitian interdisiplin ilmu yang mendukung pengembangan fisika dan pendidikan fisika. Secara khusus, topik-topik dan lingkup yang diterbitkan terdiri dari: Pengembangan model, metoda dan pendekatan pembelajaran. Pengembangan teknologi media pembelajaran dalam pendidikan fisika. Psikologi pendidikan fisika. IPA terpadu yang relevan dengan pendidikan fisika. Instrumentasi dan komputasi untuk teknologi pendidikan fisika. Fisika terapan termasuk geofisika dan teknologi material
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 185 Documents
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Enhancing Stratigraphic Geomodelling through Integration of Relative Geological Time and Spectral Decomposition: A Case Study from the Volve Field Dinanti Syafirani Zahra; Eleonora Agustine; Ginanjar Hidayat; Rafiki Ramadani; Luthfi Tanton Atthaillah
Jurnal Phi: Kurnal Pendidikan Fisika & Terapan Vol 12 No 2 (2026)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v12i2.34465

Abstract

This study aims to enhance stratigraphic interpretation and geomodel construction through the integration of Relative Geological Time (RGT) and spectral decomposition in the Volve Field, North Sea. Conventional seismic interpretation often faces limitations in identifying subtle stratigraphic features such as channels and thin layers due to limited vertical resolution. To address this issue, RGT was applied to generate a stratigraphic framework with dense horizons based on relative geological time, followed by spectral decomposition using Short-Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) to improve vertical resolution and delineate depositional features. The results show that the RGT-based stratigraphic framework successfully identified major horizons from Jurassic to Cenozoic intervals, highlighting depositional evolution within the study area. Spectral decomposition analysis at selected frequencies revealed sinuous channel geometries within the Sleipner and Hugin formations. Comparison between methods indicates that STFT provides more laterally continuous channel delineation, while CWT is more sensitive to local amplitude variations. RGB blending further enhanced visualization of channel features and improved geobody extraction. The integrated interpretation produced a three-dimensional geomodel of channel geobodies, indicating fluvio-deltaic to shallow marine depositional systems with significant lateral heterogeneity. This study demonstrates that integrating RGT and spectral decomposition improves stratigraphic interpretation, enhances geobody delineation, and reduces uncertainty in reservoir characterization. The proposed workflow can be applied to other complex depositional systems to improve stratigraphic geomodeling and reservoir analysis.
Analysis of Electrical Properties of Activated Carbon from Empty Oil Palm Fruit Bunches (EOPFB) Against Variations in Chemical Activation Materials Erna Krisda Wati Br Tarigan; Frada Erisa Pakpahan; Nirmala Sari; Rahmawati Rahmawati; Teuku Andi Fadlly
Jurnal Phi: Kurnal Pendidikan Fisika & Terapan Vol 12 No 2 (2026)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v12i2.32009

Abstract

Empty Oil Palm Fruit Bunches (EOPFB) have a high organic content such as cellulose, hemicellulose, and lignin which have the potential to be used as raw materials for activated carbon. This study aims to analyze the electrical properties of activated carbon produced from EOPFB using various chemical activation materials, namely KOH, ZnCl2, and CuCl2. The synthesis process includes drying, carbonization at 600 ℃ for 1 hour and chemical activation for 24 hours. Characteristics of diffraction patterns using X-Ray Diffraction (XRD). Electrical properties of resistivity and conductivity using the 4-point probe method. In addition, the capacitance and dielectric constant using the parallel plate method. The results of this study show that the diffraction pattern of activated carbon from EOPFB generally forms an amorphous phase.  Activated carbon with ZnCl2 chemical activation increases the electrical conductivity, which is 1.15 × 108 S/m compared to KOH at 4.1 × 10-1 S/m and CuCl2 at 1.9 × 10-1 S/m. The capacitance value increased with chemical activation of CuCl2, namely 4.44 × 10-3 F/g compared to ZnCl2 at 3.8 × 10-3 F/g and KOH at 1.06 × 10-3 F/g. The dielectric constant value of activated carbon increased by using chemical activation of CuCl2, namely 5.6 × 1010 compared to ZnCl2 of 5.3 × 1010 and KOH of 1.5 × 1010. It has potential as a dielectric material for capacitors.
Beyond Site Effects: Azimuthal Dependence of Ground Motion Residuals in the Volcanic Arc and Sedimentary Basins of West Java, Indonesia Sudibyo, Reno; Wijayanto, Wijayanto; Gustono, Sandy Tri
Jurnal Phi: Kurnal Pendidikan Fisika & Terapan Vol 12 No 2 (2026)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v12i2.34186

Abstract

The complex tectonic setting of West Java, characterized by the interaction between the Sunda volcanic arc and deep sedimentary basins, presents significant challenges for seismic hazard assessment. This study recalibrates a local Ground Motion Prediction Equation (GMPE) using a hybrid regression strategy to isolate non-ergodic path effects. We implemented a constrained regression for Site Class C fixing the saturation parameter d = 5.80 to match the Class D baseline and applied site-term corrections for Class B. Our results reveal a weak correlation between residuals and  (R = 0.215), suggesting that shallow soil velocity is a suboptimal proxy for ground motion variability in this region. Instead, a distinct azimuthal anisotropy emerged, characterized by a dipolar residual pattern. Significant high-frequency attenuation (negative residuals) was identified in azimuths crossing the Quaternary Volcanic Arc, likely driven by multiple scattering in fractured magmatic media. Conversely, systematic amplification (positive residuals) was observed towards the Jakarta and Bandung Basins, consistent with deep basin resonance. These findings underscore the necessity of integrating azimuthal path terms into regional hazard models. Moving beyond 1D site-effect proxies is critical for enhancing the accuracy of Earthquake Early Warning (EEW) systems and urban seismic mitigation in West Java’s densely populated basins.
Soil Physics Analysis of pH and Water Retention Capacity in Productive Paddy Fields and Soils Degraded by Waste-Burning Residues Hanna Aulia Siregar, Hanna Aulia Siregar; Insya Widiya Agustini, Insya Widiya Agustini; Khairiah, Khairiah; MM Awang Kechik, MM Awang Kechik
Jurnal Phi: Kurnal Pendidikan Fisika & Terapan Vol 12 No 2 (2026)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v12i2.34302

Abstract

This study investigated the differences in soil pH and water retention capacity between productive paddy soil and soil degraded by waste combustion residues from a soil physics perspective. The waste combustion soil used was household waste combustion soil containing organic and inorganic waste. Combustion residues can alter the physicochemical properties of the soil, particularly porosity, capillarity, and moisture dynamics, which affect soil water retention behavior. A comparative quantitative approach was used by collecting soil samples at a depth of 0–20 cm from two different locations. Soil pH was measured using a digital pH meter, while water retention capacity was analyzed using standard laboratory procedures. The results showed that the productive paddy soil exhibited a pH close to neutral (6.8), higher porosity, stronger capillary action, and high water retention capacity (90%). In contrast, the degraded soil exhibited alkaline conditions (pH 8.7), reduced pore connectivity, impaired moisture dynamics, and lower water retention capacity (60%). These findings suggest that waste combustion residues negatively impact soil structure and water retention mechanisms. Therefore, appropriate waste management and soil rehabilitation strategies are needed to restore soil function and agricultural productivity.
Nutmeg Oil as an Anesthetic for Enhanced Gas Diffusion in High-Density Seabass Seedlings gunawan, gunawan; Cut Laura, Cut Laura; Dedi Fazriansyah Putra, Dedi Fazriansyah Putra; Muhajir Al-Fairusy, Muhajir Al-Fairusy
Jurnal Phi: Kurnal Pendidikan Fisika & Terapan Vol 12 No 2 (2026)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v12i2.34449

Abstract

Asian seabass (Lates calcarifer) is a high-value aquaculture species cultivated to supply domestic and export markets. However, water quality deterioration during transport—marked by declining dissolved oxygen (DO) and rising carbon dioxide (CO₂) levels due to increased fish respiration and limited gas diffusion governed by Henry's Law—can induce stress and reduce seed survival. This study aimed to evaluate the effect of nutmeg oil (Myristica fragrans Houtt.) as an anesthetic on the survival and physiological response of Asian seabass seeds transported at different stocking densities, and to determine the optimal density for wet closed-system transportation. The experiment, conducted in February 2025 at the Faculty of Marine and Fisheries, Syiah Kuala University, employed a completely randomized design with five treatments and four replications. Treatments included a control (without anesthetic) and nutmeg oil administration (1.0 ppm) at densities of 25, 35, 45, and 55 fish. Transportation lasted for eight hours. Nutmeg oil significantly affected anesthesia induction and recovery time (P<0.05) but had no significant effect on survival (P>0.05). The highest survival rate (98.88%) was observed at 45 fish per container with 1.0 ppm nutmeg oil. The findings suggest nutmeg oil is an effective natural anesthetic for improving transport efficiency and fish welfare, supporting SDG 14 (Life Below Water) through sustainable aquaculture practices.

Page 19 of 19 | Total Record : 185

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