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JIF (Jurnal Ilmu Fisika)
ISSN 1979-4657 · Jurusan Fisika, FMIPA Universitas Andalas · 274 artikel di indeks
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Artikel Jurnal
A Computational Physics–Based Machine Learning Modelling of Multiphase Flow Dynamics for Crude Oil Percentage Prediction Using Water Cut and Sediment Indicators
Existing crude oil percentage prediction methods often rely on direct measurements and historical data, neglecting the coupled multiphase characteristics of oil–water–sediment systems, which limits predictive accuracy. This study develops a computational physics–based machine learning model…
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Artikel Jurnal
Hierarchical Tissue-Based MRI Features with Explainable Machine Learning for Alzheimer’s Disease Classification
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder characterized by multiscale structural brain degeneration. Many MRI-based machine learning approaches rely on coarse volumetric measures or black-box models with limited anatomical interpretability. This study aims to localize…
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Artikel Jurnal
Dynamics of Extreme Drought and Extreme Wet in Indonesia: Analysis of Frequency, Trends, and Spatial Distribution 1995–2024
The climatological pattern of rainfall and the occurrence of extreme drought and extreme wet in Indonesia are influenced by monsoon dynamics, topography, and Sea Surface Temperature Anomalies (SSTA) in the Pacific and Indian Oceans. Although studies on extreme droughts in Indonesia exist, none have…
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Artikel Jurnal
Structural Interpretation of the Jonggol Mount Area, Kulon Progo, Yogyakarta, Using Gravity Inversion Modelling
The Mount Jonggol region in Kulon Progo, Yogyakarta, constitutes an important segment of the Sunda–Banda magmatic arc system; however, its subsurface structural configuration remains insufficiently understood. This study aims to interpret subsurface structures and lithological boundaries through…
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Artikel Jurnal
Long-Term Crustal Deformation along the Southern Java Subduction Margin Revealed by GNSS Observations
This study examines long-term GNSS-derived velocities along southern Java during 2011–2020 to characterize regional crustal deformation. Data from six InaCORS stations operated by BIG were processed using GAMIT/GLOBK to produce time series and estimate horizontal and vertical velocities. Horizontal…
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Artikel Jurnal
Analysis of Breast Cancer Radiation Dose Distribution Using Bolus Density in 3DCRT Technique Radiotherapy Planning at Andalas University Hospital
Analysis of breast cancer radiation dose distribution using bolus density in radiotherapy planning of the Three-Dimensional Conformal Radiotherapy (3DCRT) technique has been conducted. This research aims to analyze radiation dose distribution in breast cancer patients using bolus density in…
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Artikel Jurnal
Monte Carlo Simulation To Determine The Average Energy Of The Electrolytes Lithium Hexafluorophosphate, Ethylene Carbonate, and Vinylene Carbonate
This study aims to determine the average energy at thermodynamic equilibrium of lithium hexafluorophosphate, ethylene carbonate, and vinylene carbonate using Monte Carlo (MC) simulation. The first simulation involved 200 particles, a box size of 60 Å, and 10,000 steps. Increasing the box size…
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Artikel Jurnal
Radiobiological Evaluation of Stage III Cervical Cancer Radiotherapy Using EUD-Based TCP and NTCP in 3DCRT
Studi ini mengevaluasi parameter dosimetri dan radiobiologi pada 24 pasien kanker serviks stadium III yang diobati dengan Terapi Radiasi Konformal Tiga Dimensi (3DCRT) di Rumah Sakit Universitas Andalas, menggunakan dataset klinis Indonesia untuk evaluasi radiobiologi spesifik konteks. Kualitas…
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Artikel Jurnal
Radiation Protection Intercomparison Activity for N-60 and N-80 X-Ray Beam Quality: Results from SNSU-BSN Indonesia
The Ionizing Radiation Metrology Laboratory of SNSU-BSN participated in an international intercomparison activity for the quantity of air kerma from narrow-spectrum protection-level X-ray beam quality N-60 and N-80, as part of quality assurance efforts and preparation for expanding service scope…
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Artikel Jurnal
Identification and Analysis of Radiation Absorption Dosage Distribution in Medical Equipment Industry Materials Using the PUFFIn Based Monte Carlo Method
Polymers are widely used in disposable medical devices that must fulfill strict safety and effectiveness standards, including sterilization to prevent microbial contamination. Irradiation is commonly applied for sterilization; however, its effectiveness depends on the uniformity of radiation dose…
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Artikel Jurnal
The Impact of Extreme Weather on Air Quality: A Satellite-Based Deep Learning Analysis for Air Quality Prediction A Case In Democratic Republik of the Congo
Air quality is vital for human health and environmental stability, particularly in tropical regions such as equatorial Africa where extreme weather and limited monitoring networks pose major challenges. This study examines how heat waves, heavy rainfall, and stagnant wind conditions influence fine…
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Artikel Jurnal
Optical Absorption Line Shape of a Λ-Type Three-Level Semiconductor Quantum Dot: Roles of Transition Dipole Moment and Relaxation Rate
The optical absorption of an isolated Λ-type three-level semiconductor quantum dot under continuous-wave excitation was investigated theoretically using a semiclassical density-matrix approach. The equations of motion were derived from the master equation within the rotating-wave approximation and…
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Artikel Jurnal
High-Concentration Synthesis of Ligand-Free Au and Ag Nanoparticles by Nanosecond Laser Ablation and Their Conversion to Au–Ag Alloy Nanoparticles via Femtosecond Laser Processing
A laser processing strategy is presented for the high-concentration synthesis of ligand-free Au, Ag, and Au–Ag alloy nanoparticles. Monometallic Au and Ag nanoparticles were first synthesized independently by nanosecond pulsed laser ablation in liquid (PLAL), producing stable ligand-free colloids…
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Artikel Jurnal
Eco-Friendly Sol-Gel Synthesis of Silver Nanoparticles using Morinda citrifolia Leaf Extract and PVP: Structural, Morphological and Antibacterial Properties
Silver nanoparticles (AgNPs) have strong potential as antibacterial agents, with effectiveness highly influenced by particle-size stability. This study synthesized AgNPs via a green sol-gel method using noni (Morinda citrifolia) leaf extract as a natural reducing agent and polyvinylpyrrolidone…
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Artikel Jurnal
Thermodynamic Analysis of an Endoreversible Bosonic Quantum Otto Refrigerator under Partial Thermalization
Quantum refrigerators (QRs) are pivotal in exploring thermodynamic behavior at microscopic scales. This study investigates a quantum Otto refrigerator using a bosonic gas confined in a cubic potential, operating under finite-time thermalization. We derive key thermodynamic quantities analytically…
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Artikel Jurnal
Equilibrium Points and Periodic Orbits of Artificial Satellite Adjacent to an Oblate and Rotating Asteroid
Asteroids have various shapes (mostly irregular) and physical characteristics. Space missions to asteroids are becoming frequent, and a global mapping scheme is applied to collect the asteroids’ physical properties. Depending on the mission purposes, the mapping scheme can encircle the whole…
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Artikel Jurnal
Effect of Freshwater and Seawater Immersion on Mechanical Properties and Pre-Immersion Magnetic Response of Silicone Rubber–Magnetite Composite Magnets
Magnetite (Fe₃O₄) and RTV 48 silicone rubber-based magnetic composites have potential for outdoor applications due to their flexible and tunable magnetic properties. This study investigates the effect of immersion for 14 days in fresh water and seawater on its mechanical, magnetic, and thermal…
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Artikel Jurnal
Enhancing Stellar Orbit Accuracy through the Radius Power Law Time Step Function Model
Accurately determining stellar orbits within astrophysical systems is paramount for understanding celestial mechanics. This study proposes a novel approach to enhance orbit accuracy by incorporating a radius power law time step function model. The methodology involves the numerical integration of…
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Artikel Jurnal
Monte Carlo Simulation to Understand the Working Mechanism of The Electrolytes Lithium Hexafloorophosphate and Ethylene Carbonate
Monte Carlo (MC) simulations provide a powerful approach to investigate electrolyte–electrode interactions and to optimize battery design. This study aims to determine the entropy and average energy of a lithium salt–ethylene carbonate (EC) system, as these parameters are essential for evaluating…
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Artikel Jurnal
Analysis of Earthquake Risk Estimation for Sustainable Development Using Microtremor Data Based on Vs30 Distribution: Comparative Study of DFA and Geopsy in Central Bengkulu, Indonesia
This research was conducted in Pondok Kelapa Subdistrict, Central Bengkulu Regency, to analyze subsurface characteristics using microtremor data and the Horizontal-to-Vertical Spectral Ratio (HVSR) method. The research compared DFA (Diffuse Field Assumption) and Geopsy approach. In this study, 40…