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 …
ABSTRACT Growing global concern over water scarcity and environme ntal sustainability has increased the importance of transparency in corporate reporting. This study examines the determinants of Corporate Water Disclosure (CWD) among mining companies listed on the Indonesia Stock Exchange (IDX) from 2018 to 2023, focusing on the effects of firm size, leverage, market value, company growth, fir…
ABSTRACT This study aims to examine the effect of training and technology dependency on Customer Due Diligence (CDD), as well as the effect of CDD on money laundering risk judgment by bank officers. CDD is considered a strategic element in anti-money laundering efforts, involving identity verification, assessment of fund usage intentions, and analysis of transaction histories to support ac…
ABSTRACT This study aims to analyze the effect of price, competitor price, and consumer income on the demand for the Low Cost Green Car (LCGC) Daihatsu Ayla in Pekanbaru City. Daihatsu Ayla was chosen because of its relatively stable sales performance amid tight competition in the energy-efficient vehicle segment. The research uses a quantitative approach with secondary data from 2014–20…
ABSTRACT This study aims to identify and explain the influence of E-Service Quality and Price Perception on Purchase Decision and Customer Satisfaction among Generation Z in Pekanbaru City. This research employed a quantitative approach with a total of 130 respondents, who are Maxim application users belonging to Generation Z in Pekanbaru. The sampling technique used in this study was purposiv…
ABSTRACT This study aims to analyze the effect of Green Involvement on Corporate Sustainability Performance with Employee Performance as an intervening variable at PT. Angkasa Pura Indonesia, Pekanbaru Branch Office. This research employs a quantitative approach using a survey method by distributing questionnaires to 117 respondents who are employees of PT. Angkasa Pura Indonesia, Pekanbar…
ABSTRACT Three-phase induction motors are widely used in industry due to their high reliability and efficiency; however, conventional control systems have limitations in terms of remote operation and monitoring. This research designs and implements a start–stop control and current monitoring system for a three-phase induction motor based on the Internet of Things (IoT) using an ESP32 mic…
ABSTRACT The design and construction of a solar-powered water pump system for pool water circulation was carried out to provide an efficient and sustainable alternative energy solution. This system utilizes solar modules as the primary energy source, converted by an inverter to produce AC voltage suitable for the pump's needs. An MPPT controller (MPPT) is used to optimize power absorption …
ABSTRACT Three-phase electric motors are the type of motor that is most widely used in both large and small industries compared to other types of motors. This is possible because this type of motorbike has advantages both from a technical and economic point of view. Three-phase electric motors have large initial current characteristics but this can be overcome by several methods of regulation,…
ABSTRACT This study discusses the design of a monitoring system for current, voltage, and power in a three-phase induction motor based on the Internet of Things (IoT). The system uses an ESP32 microcontroller as the main controller and PZEM-004T sensors to measure electrical parameters. Measurement data are transmitted via WiFi and displayed on the Blynk platform, allowing real-time monitoring…
ABSTRACT Corn sheller machine functions to separate corn kernels from the cobs. Corn sheller is a tool designed to improve and speed up the shelling results. With this mechanical corn sheller machine design, corn shelling work is more effective and efficient compared to manual shelling such as traditional shelling by hand, shelling with the tpi model, and the large method. The design results c…