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Indonesian Journal of Applied Physics
ISSN 2089-0133 · Sebelas Maret University · 258 artikel di indeks
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Artikel Jurnal
Propose Model of Gathering System Optimization on Unit-G4 Geothermal Power Plant
The nature of geothermal heat is a decrease in pressure, temperature, and steam flow. Based on Exaquantum observation data, one of the geothermal power plants in West Java experienced a reduced steam supply for the Geothermal Power plant (GPP) Unit-G4, which decreased production capacity. This…
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The Combined Boris-Cyclotronic Integrator for Axially Symmetric Penning Ion Source Simulation
An investigation of the use of combined boris-cyclotronic particle integrator scheme for 2D axially symmetric Penning ion source simulation program has been performed. The particle-in-cell based simulation program was intended to be used for Penning ion source optimization. The combination was done…
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Artikel Jurnal
Real-Time Weigh In Motion (WIM) Monitoring System Based on Optoelectronics and Whatsapp Gateway
The increasing mobility of motorized vehicles, such as trucks, has positively contributed to regional growth and connectivity in Indonesia. However, this development has also introduced significant challenges, particularly road damage caused by overloaded vehicles. Such damage not only jeopardizes…
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Artikel Jurnal
Thermo-Fluid Dynamics of PLA Deposition in Fused Filament Fabrication 3D Printing: A Numerical Study
Prototyping plays an important role in product design and has recently gained benefit from the rising popularity of 3D printing. It is to be expected that 3D printing will accommodate more materials, which need to be tailored to specific design requirements. Insights into heat transfer and fluid…
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Assessment of Settlement Area Development in Jember Regency Area Based on Multitemporal LANDSAT 8 OLI-TIRS Data
Jember is a regency in the province of East Java-Indonesia, experiencing residential or settlement area growth because of increasing population as the main trigger for land use changing. Monitoring the development of settlement areas is important for regional and urban planning. Remote sensing…
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Artikel Jurnal
Estimation of Tsunami Hazard and Evacuation Sites using The Cornell Multigrid Couple Tsunami Method in South Button Regency
The 1992 earthquake and tsunami in the Flores Sea proved that the tsunami impacted the people of the South Buton Region. This research aims to map tsunami hazards and estimate evacuation routes and sites in the South Buton Regency. These evacuation routes and sites are very crucial for disaster…
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Artikel Jurnal
Integration of Electrical Resistivity Tomography and Borehole Data for Mapping Laterite-Bedrock Boundaries in a Nickel Deposit, 'PHO' Block, Southeast Sulawesi
Indonesia has the largest nickel reserves in the world, so proper exploration is crucial to map the potential and utilization of this resource. Exploration of nickel laterite is carried out by mapping the boundaries of the laterite zone and bedrock as a prospect zone for further exploration. One of…
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Artikel Jurnal
Influence of Electrode Shape and Spacing on Corona Discharge Phenomena using a Plasma Generator
Electrical discharges that happen near high-voltage conductors are known as corona discharges. It will produce light and sound as it ionises the surrounding air. The purpose of this work is to investigate how conductor form and spacing affect the properties of corona discharge produced by a plasma…
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Lung Cancer Classification using Gray-Level Co-Occurrence Matrix Feature Extraction and Forward Selection Feature Selection based on the K-Nearest Neighbor Algorithm
In diagnosing lung cancer, the medical imaging team manually identifies CT-scan images of the lungs. This identification process makes it difficult for the medical imaging team to differentiate between lung cancer and normal images. This is because there is noise in the image, which reduces the…
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Artikel Jurnal
Interpretation of 3 D Magnetic Inversion Results in the Majenang Area, Indonesia
The Total Magnetic Intensity (TMI) data requires conversion using Reduction to Pole (RTP) or Reduction to Equator (RTE) filters prior to the interpretation process. However, the low latitude location causes stability issue in the RTP and is replaced by the RTE computing processes. Noteworthy, the…
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Artikel Jurnal
Theoretical studies of optically induced high spin polarization and cubic anisotropy in cubic semiconductors
Theoretical studies of optical spin polarization and cubic anisotropy in cubic semiconductors GaAs and GaSb are performed. We use Kane wave functions to calculate the eight-level transition matrix elements permitted by the optical selection rules. It is found that the spin polarization depends on…
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Artikel Jurnal
Visual Analysis on Photoacoustic Emission Images of Synthetic Dye Contrast Agents inside a Simple Closed-Surface Phantom
A straightforward photoacoustic microscopy imaging system utilizing a laser diode emitting photons at wavelength of 450 nanometers was employed for visualizing contrast-enhanced phantom objects. These phantoms consist of polypropylene tubes with a diameter of 0.3 cm, infused with three types of dye…
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Artikel Jurnal
Using FTIR Analysis to Investigate the Mineralogical Composition of Ultisolsa Alfisol in Southeast East Sulawesi, Indonesia
This study aims to investigate the mineralogical composition of Ultisols and Alfisols using the X-ray diffraction (XRD) analytical technique and FTIR analysis to provide fundamental information on these soil types. Thirty samples of Ultisols and Alfisols were collected from six selected sites with…
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Artikel Jurnal
Adsorption Behavior of Sugarcane Bagasse-Derived Activated Carbon as a Copper Removal
This study aims to remove Cu2+ as a heavy metal inside the sample solution implementation. Eliminating heavy metals through activated carbon utilizes sugarcane bagasse's high carbon content, which is rich in cellulose, lignin, and hemicellulose. There are various methods for eliminating metal…
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Artikel Jurnal
Boltzmann-Gibbs Entropy to measure Fluctuation of Stock Index
The disorder of a physical system can be measured based on the entropy of the system. The greater the entropy value of a system, the more disorder the system increases. In Physics, the disorder of system is measured by Boltzmann-Gibbs Entropy. Boltzmann-Gibbs entropy relates the disorder of a…
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Artikel Jurnal
A theoretical study of electron impact excitation of the lowest autoionizing states of rubidium using a distorted wave method
In this study, we applied distorted wave method to calculate integral cross sections, differential cross sections, and alignment parameters for electron impact excitation of the lowest autoionizing state of Rb. The projectile electron energy we considered is in the range of near threshold up to…
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Artikel Jurnal
Synthesis and Characterization of Reduced Graphene Oxide (RGO) as a Solid-State Electrolyte in Batteries
Reduced Graphene Oxide (rGO) is a derivative of graphene that has undergone the removal or reduction of its oxygen groups. This study performed the synthesis and characterization of rGO as a solid-state electrolyte in batteries in order to assess the conductivity of rGO and its ability to store…
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Artikel Jurnal
Surface Area Analysis of Activated Carbon Material From Palm Frond Waste using Different Activation Agents
Carbon is one of the abundant elements obtained from organic matter, one of which is found in the fronds of oil palm trees which is found on the Kalimantan Island. This research uses local organic waste in East Kalimantan to be used as activated carbon material, palm frond waste. Activated carbon…
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Artikel Jurnal
Modified household pressure cookers as Hydrothermal Reactor for Production of Carbon Dots from Fish Scale Waste
Recent advancements in the synthesis of carbon dots utilizing basic equipment are crucial for their large-scale production. This study explores the use of household pressure cookers to synthesize carbon dots from fish waste. A thermocouple and manometer are integrated into the cooker to regulate…
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Artikel Jurnal
Role of the Nuclear Technology for Regional Border Security
The smuggling of explosives, narcotics, weapons, and hazardous chemicals, as well as the illicit trafficking of radioactive and nuclear materials across the national border have threaten the security of all States. Nuclear technology has been developed to face these problems. Current inspection…