Oil palm empty fruit bunch charcoal (Elaeis guineensis Jacq.) is a potential raw material that can be utilized as an adsorbent for Escherichia coli (E. coli). The cellulose content in the empty fruit bunch charcoal acts as a carbon source in the E. coli adsorption process, whose efficiency can be enhanced through an activation process using ZnCl₂ as an activating agent. The addition of ZnCl2…
Water pollution hazardous pollutant compounds is often found in the industrial sector. This study aims to increase the photocatalytic activity of ZnO for the degradation of 4-nitrophenol pollutants in wastewater. The method used in this study is the nanoparticle biosynthesis method that utilizes plant extracts. ZnO material is doped with (Ag, Se, and S) using matoa leaf extract and microwave ir…
The main challenge in energy management lies in the instability of power supply from different sources and the need for an automated system that efficiently switches between energy sources. This study aims to design and develop a power management module based on Arduino Uno that is capable of automatically monitoring and controlling the transitions between power sources. The system uses INA219 …
People tend to have a less productive lifestyle, excessive use of electronics and consumptive behavior that affects sleep patterns. Bad habits carried out continuously cause hormonal imbalances characterized by insomnia and depression. The amino acid L-Tryptophan (Trp) is reported to improve sleep quality and early treatment of early symptoms of insomnia without depressant drugs. However, the u…
This study aims to design a system for detecting ripeness levels and automatically counting oil palm Fresh Fruit Bunches (FFB) using a computer vision approach based on YOLOv8 and ByteTrack algorithms. The main issue addressed is the low efficiency and accuracy of the manual sorting process based on ripeness level, which is still commonly used in the palm oil industry. The system is designed to…
The development of optical communication technology demands stable and efficient transmission media, one of which is single mode fiber (SMF). One of the main challenges in optical fiber performance is the birefringence phenomenon, which is the difference in refractive index between two orthogonal polarization directions, which can cause polarization dispersion and decreased transmission quality…
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The effect of chemical activation temperature on the performance of activated carbon electrodes based on orange peel biomass (citrus sinensis) for supercapacitor applications has been studied. Activated carbon was prepared by chemical activation using 0.5 M ZnCl2 with temperature variations of 750 °C (JR-750 sample), 800 °C (JR-800 sample), and 850 °C (JR-850 sample). Temperature treatment i…
Fiber optics have revolutionized modern communication by boosting data transmission efficiency and channel capacity through high transfer speeds, with SMF, a light-based medium, offering significant advantages like wide bandwidth and low signal attenuation. However, fiber optics aren't immune to technical issues, particularly splice loss, which diminishes optical signal power due to imperfect f…
Ferroelectric materials, such as Barium Zirconium Titanate (BT-BZT), exhibit spontaneous polarization and the ability to reverse their internal electric field direction, rendering them highly promising for electronic applications, including capacitors, sensors, and actuators. With high permittivity, tunability, and low dielectric loss, BT-BZT is an ideal candidate for capacitor applications, pa…
Heart rate measurement using electrocardiogram (ECG) signals is generally still performed manually, which is less effective, especially when limited to close range. Therefore, a computational approach is needed to optimize measurement results. The Fast Fourier Transform (FFT) is applied to convert the EKG signal from the time domain to the frequency domain, enabling accurate identification of t…
This study aims to develop an automatic system for detecting the quality of loose fruit of the oil palm using the YOLOv8 algorithm based on digital imaging. A total of 200 loose fruit samples were classified into four quality categories: fresh, rotten, dry, and mouldy. Image acquisition was conducted using an RGB camera with a resolution of 640×480 pixels, resulting in 800 labeled images. The …
Exploration of underground water becomes urgent in areas with population growth and intensive domestic activities. This research was conducted to map the distribution of aquifers and evaluate the quality of underground water in Perhentian Marpoyan Village, Marpoyan Damai Sub-district, Pekanbaru City. The method used was Wenner configuration geoelectric survey and geochemical analysis based on p…
Separation of oil palm fruit bunches after the threshing process is important to reduce oil loss that remains in the bunches. This study aims to develop an automation system based on computer vision and an Arduino Uno microcontroller to separate empty bunches and partially stripped bunches in real-time. The method used is the YOLOv8 object detection algorithm, trained using a dataset of partial…
Separation of oil palm fruit bunches after the threshing process is important to reduce oil loss that remains in the bunches. This study aims to develop an automation system based on computer vision and an Arduino Uno microcontroller to separate empty bunches and partially stripped bunches in real-time. The method used is the YOLOv8 object detection algorithm, trained using a dataset of partial…
Groundwater is an essential resource for the community in Lima Puluh District, Pekanbaru City. The majority of the population still relies on bore wells and dug wells. However, the quality and distribution of groundwater have not been fully understood from a scientific perspective. This study aims to analyze groundwater potential based on subsurface resistivity using the Schlumberger configurat…
This study aims to analyze the aquifer zone in Sialang Sakti Village, Tenayan Raya District, using the Wenner-Schlumberger configuration geoelectric method and geochemical analysis. The geoelectric method is used to identify the subsurface structure of the land and determine the presence of aquifers based on the resistivity value of the rock. The data obtained were processed using Res2Dinv soft…
The ripeness level of oil palm Fresh Fruit Bunches (FFB) is a determining factor for the quality of Crude Palm Oil (CPO). The method of sorting FFB before entering the boiling process is generally done manually which is destructive and subjective. Imaging methods have emerged to address this problem. This research aims to develop a computer imaging system based on LED lights and color filters f…
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The development of digital technology has driven a major transformation in the manufacturing industry. This study designed and built a prototype of an automatic loosed fruits sorter based on a camera and Arduino Uno. The system consists of two main components that are integrated with each other, namely the detection system and the automation system. The detection system includes the preparation…