Artikel dari Penerbit "Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung"

Penerbit: Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

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Ditemukan 116 artikel.

The Influence of Heatmap Correlation-based Feature Selection on Predictive Modeling of Low Alloy Steel Mechanical Properties Using Artificial Neural Network (ANN) Algorithm

Oleh: Leni, Desmarita, Sumiati, Ruzita , Adriansyah

This study aims to evaluate the influence of heatmap correlation-based feature selection on predictive modeling of low alloy steel mechanical properties using an artificial neural network (ANN) algorithm. Heatmap correlation was used to determine the chemical elements most correlated to the low allo...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 4 No. 4 (2023): Journal of Energy, Material, and Instrumentation Technology; 152 - 162

Influence Variation Concentration Zn(NO3)2·6H2O Against Group Function, Size Particles, and Morphology Particle Nanoparticles ZnO with Method Green Synthesis Using Extract Leaf Moringa

Oleh: Benyamin, Chairunissa A, Manurung, Posman, Suprihatin, Suprihatin

This research was conducted to determine the effect of varying concentrations of Zn(NO3)2·6H2O (zinc nitrate hexahydrate) on functional groups, particle size, and particle morphology of ZnO nanoparticles using the green synthesis method using Moringa leaves. The materials was used in this study wer...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 4 No. 3 (2023): Journal of Energy, Material, and Instrumentation Technology; 117-124

Design of a Website-Based Realtime Noise Monitoring System in the Work Environment as a Support for Occupational Health and Safety (OHS) Data

Oleh: Febriyanti, Nur Tasya , Pauzi, Gurum Ahmad , Ayu, Humairoh Ratu

Penelitian mengenai alat monitoring tingkat kebisingan telah direalisasikan menggunakan sensor suara GY Max 4466 dengan mikrokontroler ESP Wroom 32 berbasis website. Penelitian ini bertujuan untuk mengetahui tingkat kebisingan di lingkungan kerja dan dapat memonitoring tingkat kebisingan berbasis we...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 5 No. 2 (2024): Journal of Energy, Material, and Instrumentation Technology; 56 - 64

Design and Development of a Measuring Instrument for Cholesterol Level Detection in The Blood Using Non-Invasive Techniques Based on the Wemos D1 R1 Microcontroller

Oleh: Yuniar, Noeris, Supriyanto, Amir, Ayu, Humairoh Ratu

Cholesterol level checks are generally performed either invasively or using a portable blood test strip. It requires a long laboratory analysis time and causes pain in the body, so a non-invasive tool is needed to check cholesterol levels. The study aims to detect cholesterol levels in the blood wit...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 6 No. 3 (2025): Journal of Energy, Material, and Instrumentation Technology; 108-116

Analysis of the Effects of CO2, H2S Composition, and Temperature on Steam Towards Corrosion Rate in Geothermal Power Plants

Oleh: Firdaus, muhammad Rafsya , Hidayati, Noor, Ekayuliana, Arifia

The corrosion in the steam line pipes at the Geothermal Power Plant is caused by acidic substances present in the steam, especially H2S and CO2, originating from the geothermal reservoir. During operation, this leads to thinning of the pipe walls, affecting the pipe's thickness. The purpose of this ...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 4 No. 4 (2023): Journal of Energy, Material, and Instrumentation Technology; 163 - 168

Production of an Orbital Shaker Device with Time and Rotational Speed Control Using Potentiometer Based on Arduino Uno

Oleh: Vicias, Icha Arum , Pauzi, Gurum Ahmad , Ayu, Humairoh Ratu

Mixing solutions is an everyday activity performed in laboratory spaces. Mixing solutions manually by shaking is less effective, as it takes a long time and requires much effort. Therefore, an orbital shaker has been created to mix solutions with a digital unidirectional movement. This device is des...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 5 No. 1 (2024): Journal of Energy, Material, and Instrumentation Technology; 17-27

The Effect of NaOH on the Synthesis of Nano ZnO Using Red Betel Leaves (Piper crocatum) by Green Synthesis Method

Oleh: Nurcahayaniati, Hikmah, Manurung, Posman, Suciyati, Sri Wahyu

ZnO has been produced using a green synthesis method. This research aims to determine the effect of  NaOH variations on ZnO nanoparticles obtained using red betel leaf extract. The variation of  NaOH used is 0,2; 0,4; 0,6;  the characterization carried out was Fourier Transformation Infra Red (FT...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 6 No. 3 (2025): Journal of Energy, Material, and Instrumentation Technology; 117-123

Utilization of the Hall Effect to Detect Leakage Current in DC System Branch Loads Using the Positive-Negative Current Difference Method

Oleh: Kamal, Ahmad ilham, Dona, Nur Rahma

Currently, many industries use DC power as a power supply for controller equipment, etc. All companies want their DC system to be reliable. One effort to maintain the reliability of the DC system is to monitor the leakage current in each branch of the DC system load. Leakage currents that occur if n...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 6 No. 2 (2025): Journal of Energy, Material, and Instrumentation Technology; 60-65

Potential of Carbon Fiber as An Insulation Layer In Anti-Sensor Thermal Pdl: A Review

Oleh: Nasution, Rahmatsyah, Murniati, Riri , Nasution, Salsabila Fauziah Dhuha

The advancement of technology, along with the development of the times, makes mastery of technology an absolute thing for the progress of national defense; one of its applications in defense materials is the manufacture of PDL anti-thermal sensor suits. In the PDL anti-thermal sensor suit, carbon fi...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 5 No. 2 (2024): Journal of Energy, Material, and Instrumentation Technology; 65 - 71

Computational Exploration of Intrinsic Rashba Splitting in Janus Si2SbBi Monolayer Using Density Functional Theory

Oleh: Affandi, Yusuf, Darojat, Yusron, Anshory, Muhammad

In this paper, we investigate the electronic structure of Janus Si2SbBi monolayer and compare it with the non-polar systems Si2Bi2 and Si2Sb2 monolayer based on Density Functional Theory (DFT) calculation. According to the first-principles calculation, these systems exhibit semiconductor properties ...

Sumber: Journal of Energy, Material, and Instrumentation Technology; Vol. 5 No. 1 (2024): Journal of Energy, Material, and Instrumentation Technology; 28-34

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