ABSTRACT The face recognition attendance system at PT. Sumber Sawindo Kencana faces significant challenges regarding connection stability due to its operational location in a plantation area with limited infrastructure, resulting in high jitter reaching 125 ms, packet loss up to 31%, and buffering issues. This research aims to optimize network performance by implementing the Point to Point Tun…
ABSTRACT Pyrolysis is the heating of plastic waste at high temperatures, with little or no oxygen, producing products such as oil, gas, and carbon residue. The use of catalysts in the pyrolysis process can accelerate the conversion of plastics, resulting in oil of higher quality. This study aims to investigate the potential of oil from the pyrolysis of Low Density Polyethylene (LDPE) with the …
ABSTRACT PT. Kilang Pertamina Internasional (KPI) has a heat exchanger with pitting corrosion and uniform corrosion defects on its cylinder shell. The cylinder shell structure with corrosion defects must be assessed for operational feasibility to ensure the safe operation of the equipment. This study assesses the serviceability of the cylinder shell structure with corrosion defects and analyze…
ABSTRACT This research is an experimental study that aims to evaluate the use of fly ash as a cement substitute in Cement Treated Base (CTB) mixtures, using an alkali activator as a binding agent. The fly ash used was derived from coal combustion waste and was combined with an alkali solution consisting of sodium silicate (Na₂SiO₃) and sodium hydroxide (NaOH) in three variations of alk…
ABSTRACT Pelalawan Regency is one of the largest regencies in Riau Province, with an area of 1.340.872 Ha. Based on data from the Central Statistics Agency (BPS) in 2024, Pelalawan Regency has a population of 434,590 with a population growth rate of 4.78% from 2020 to 2024. As the population continues to grow, it will lead to increased human activities to meet needs such as land use conversion…
ABSTRACT This study examines the legal liability of a Limited Liability Company (PT) regarding the use of an individual’s personal assets as collateral for corporate debt. The research is motivated by the case of PT Global Inspekindo Utama, which obtained financing from a bank by pledging personal assets belonging to an individual outside the company’s structure. Problems arose when the co…
ABSTRACT The efficiency of the distribution system often decreases due to power losses that occur during the transmission of electricity from the power plant to consumers. This condition causes the generated electrical energy to be not fully utilized, resulting in energy and cost losses. One of the efforts to improve distribution system efficiency is by implementing Distributed Generation (DG)…
ABSTRACT Caprolactam is an organic compound with the chemical formula (C6H11NO). At room conditions, caprolactam is a crystalline solid, white in color, and has a distinctive odor. Caprolactam is categorized into industrial products, because it is used in the textile industry as an ingredient in the manufacture of nylon-6, which is the starting material for making synthetic fibers. The need fo…
ABSTRACT Butyraldehyde is a colorless liquid chemical with the chemical formula C4H8O. n-Butyraldehyde is a primary aldehyde compound that has many applications in various industrial sectors. n-Butyraldehyde is widely used as a raw material for the production of Poly Vinyl Butyral (PVB), butyric acid and butyric anhydride, textiles and perfumes, as well as solvents. The demand for n-butyraldeh…
ABSTRACT Hydrogen peroxide is widely used as an oxidant, bleaching agent, disinfectant, polymer initiator, and cross-linker in various fields, such as papermaking, textiles, chemical synthesis, military, electronics, food, pharmaceuticals, cosmetics, environmental protection, and metallurgy. Hydrogen peroxide production in Indonesia reaches 110,000 tons per year, which is insufficient to meet …
ABSTRACT Urea is a strategic nitrogen-based petrochemical product used in both the agricultural and industrial sectors as a raw material for resins, adhesives, and plastics. In addition, in the automotive sector, urea is utilized in Selective Catalytic Reduction (SCR) technology to reduce nitrogen oxide (NOx) emissions. Global urea demand is projected to continue increasing with a Compoun…
ABSTRACT Dimethyl ether (DME) is a simple ether compound used as a raw material in industry and as a fuel. DME is a colorless gas with an ether-like odor that is soluble in both water and oil. It is non-carcinogenic, non-teratogenic, non-mutagenic, and non-toxic, demonstrating its environmental friendliness because its combustion does not produce sulfur oxides (SOx) or smoke, and produces very…
ABSTRACT Paraxylene is an aromatic hydrocarbon compound with molecular formula C8H10. Paraxylene is used as a raw material for several end products such as pure terephthalic acid (PTA) or dimethyl terephthalate (DMT). Terephthalic acid (PTA) and dimethyl terephthalate (DMT) can be processed as materials for the plastic and textile industries. In addition, paraxylene is used as a resin materi…
ABSTRACT ABS (Acrylonitrile Polybutadiene Styrene) is a thermoplastic polymer consisting of three different monomers namely acrylonitrile, butadiene, and styrene. In 2022, Indonesia imported Acrylonitrile Butadiene Styrene (ABS) as much as 61,406,557 tons/year. This factory proposal aims to produce ABS as much as 35,000 tons/year in order to reduce the amount of domestic imports, increase fore…
ABSTRACT Palm oil harvesting are carried out by workers in a standing position and lifting egrek, which puts them at risk of musculoskeletal disorders. This study aims to analyze work posture using the Rapid Entire Body Asssessment (REBA) Method At PT. XYZ. Pulse rate measurement using a pulse oximeter and data collection on complaints among harvesters using the Nordic Body Map (NBM) quest…
ABSTRACT Peat water possesses very high color intensity due to its organic content, requiring an effective adsorption technology for its removal. Porous fly ash based geopolymers present a promising alternative because of their stable aluminosilicate structure and tunable porosity. This study focuses on synthesizing and optimizing porous geopolymers for peat water color removal using Response …
ABSTRACT Peat water serves as a potential alternative water source for communities living in peatland areas. However, it cannot be used directly due to its high iron content, low acidity (pH), and dark color. Therefore, a simple treatment technology is required to remove color and iron to make the water suitable for public use. The tray aerator method combined with geopolymer media offers a so…
ABSTRACT Economic growth is one of the main indicators of successful regional development, but there are still disparities between districts/cities in Riau Province. In addition, unemployment and poverty rates in several areas of Riau Province tend to be high, even though the HDI continues to improve. This situation raises the question of the extent to which human development, unemployment, an…
ABSTRACT This study aims to examine the effect of inflation, exchange rate, and Malaysia’s Gross Domestic Product (GDP) on the export of animal and vegetable fats and oils commodities from Riau Province to Malaysia 2010-2024 period on a quarterly basis. The data used in this study are secondary time-series data, and the analytical method employed is multiple linear regression analysis us…
ABSTRACT This study aims to determine the effect of leverage, managerial ownership, company size, and operating cash flow on earnings persistence. The research method used is quantitative. The population in this study were banking and insurance sub-sector companies listed on the Indonesia Stock Exchange (IDX) in 2021-2023. The sample size in this study was 112. Data analysis was conducted …