ABSTRACT This study aims to modify and analyze the product quality of a horizontal-motion hydraulic pipe bending machine in order to improve the tool’s ability to achieve a bending angle of up to 90°, which was previously unattainable. The modification was carried out by adding an auxiliary tool to the hydraulic pendulum of the jack, with the aim of extending the pendulum stroke without alt…
ABSTRACT This study aims to analyze damage to critical turbine components at the Maninjau Hydroelectric Power Plant (PLTA Maninjau) using the Failure Mode and Effect Analysis (FMEA) and Reliability Centered Maintenance (RCM) methods. As a primary component in hydroelectric power generation, the turbine plays a vital role in maintaining the continuity of electricity production. Despite routine …
ABSTRACT Maninjau Hydroelectric Power Plant (PLTA Maninjau) is a vital energy source in West Sumatra with a total capacity of 70 MW. One of its essential components is the governor machine, which regulates turbine speed and electrical frequency. To reduce downtime caused by unexpected failures, a well-planned maintenance strategy is required. This study applies the Failure Mode and Effect Anal…
ABSTRACT Ammonium Nitrate is a chemical that is often used as an explosive for coal mining, mineral mining, military explosives, and can also be used as fertilizer and anesthetic. Ammonium nitrate is formed from the neutralization reaction of ammonia and nitric acid by the UHDE process. Neutralization takes place in a bubble reactor. The ammonium nitrate output from the reactor is flowed i…
ABSTRACT This study presents the preliminary design of a Dimethyl Carbonate (DMC) plant utilizing methanol through the oxidative carbonylation process. Dimethyl carbonate is a vital organic compound widely used in the pharmaceutical, coating, and fuel additive industries. The plant is designed with a production capacity of 17,000 tons per year and is planned to be located in the Bontang Indust…
ABSTRACT Polyvinyl alcohol (PVOH, PVA, or PVAI) is a compound classified as an acetylene derivative compound. This type of polymer has a molecular formula (C2H4O)n, is soluble in hot water, has low gas permeability, has paper properties, and has high electrical resistance, and has a crystal structure (can reflect light). Polyvinyl alcohol can be used for paper coating materials, fibers, and ad…
ABSTRACT This preliminary plant design aims to meet domestic demand and reduce reliance on imported intermediate chemicals, specifically ethylbenzene, which serves as the main raw material in styrene production and its derivatives. The plant is designed using the Mobil/Badger process, involving the alkylation reaction between ethylene and benzene with a ZSM-5 catalyst. The plant will be locate…
ABSTRACT The demand for methyl chloride in Indonesia still relies heavily on imports due to limited domestic production. This study aims to develop a preliminary design of a methyl chloride plant using methanol and hydrochloric acid through a hydrochlorination process, with a distillation column as the main separation equipment. The methodology includes designing the reaction process in a fixe…
ABSTRACT Poster presentation is one of the prerequisites for completing the study program in the Electrical Engineering Department at the University of Riau. This research aims to design and develop an Immersive Virtual Poster Day application based on Android using the Unity XR Interaction Toolkit as an interactive and immersive platform for academic poster exhibitions. The application is desi…
ABSTRACT The advancement of information technology has encouraged various business sectors to utilize web-based information systems to improve efficiency and expand marketing reach. Arif Ban, a business engaged in the sale of tires and rims, currently does not have a digital sales system to support its business processes effectively. Therefore, this study aims to design and develop a web-based…
ABSTRAK Tahu Pak Budi Factory is a small and medium-sized enterprise (SME) engaged in tofu production and located in Tarai Bangun Village. Since its establishment, the factory has used manual systems for recording sales, orders, and finances, leading to inefficient operations and limited market reach. To address these issues, a website-based e-commerce application was designed and developed to…
ABSTRACT Riau Province possesses significant tourism potential; however, a portion of its residents tend to prefer tourist destinations outside the region, such as West Sumatra. One contributing factor is the lack of an information system capable of providing personalized tourism recommendations. This study aims to develop a tourism recommendation website based on a Hybrid Recommender Syst…
This final project discusses a new modified Newton’s method for solving nonli- near equations and free from second derivative. The convergence analysis using Taylor expansion and geometric series show that the proposed methods has a fourth order convergence with efficiency index is 1.587. Numerical computa- tional results of some examples with several different methods show …
Lemna perpusilla is an aquatic plant with important ecological functions, particularly as anatural feed sourcedueto its high protein content. This studyaimed to determine the optimal concentration of palm oil mill effluent (POME) as a growth medium for Lemna perpusilla. The research was conducted from October to November 2023 at the Algae Production House 3, Sei Galuh Palm Oil Mill, Kampar. A C…
Liquid waste from palm oil mills has a fairly high nutrient content and can be used as organic fertilizer for the growth of Lemna perpusilla. Lemna perpusilla known as aquatic weed with its proximate content can be considered as bioethanol. To determine the effect of utilizing palm oil mill liquid waste on the proximate and bioethanol content of Lemna perpusilla, a study was conducted from Febr…
Phytohormone 6-Benzyl Amino Purine (BAP) is a plant hormone that can support, inhibit, and alter the physiological processes of plants including microalgae. 6-Benzyl Amino Purine (BAP) has a high nitrogen content so that it can increase cell division in microalgae. The purpose of this study was to determine the effect of phytohormone 6-Benzyl Amino Purine (BAP) on the density and biomass of Chl…
Liquid waste from oil palm mills has a high nutrient content and can be used for plant growth, one of which is the Wolffia sp. The purpose of this study is to determine the best concentration of oil palm liquid waste as a medium for the growth of Wolffia sp. The research was conducted from February-March 2024 which islocated atthealgaeproduction house3 PKSSeiGaluh Kampar. Thedesign carried out …
Microplastics are small plastic measuring in size (< 5mm) that generally originate from the degradation of larger plastics.This research aims to identify the types and abundance of microplastics in the water of the Mandau River, Sungai Mandau District. The research was conducted from December 2024 to January 2025. Sampling was carried out once every 2 weeks as many of 3 repetitions. Researchsta…
Trichogaster trichopterus is one of freshwater fishes that has highly favored by consumers for its delicious taste and nutritional content. This study was conducted from September 2024 to March 2025 at the Parasitology and Fish Diseases Laboratory, Faculty of Fisheries and Marine Sciences, University of Riau. The study aimed to examine the erythrocyte profile infected by the digenean trematode …
Trichogaster trichopterus is a freshwater fish commonly found in swampy and lowland waters, and it is highly valued for its taste and economic potential. However, in its natural habitat as well as in aquaculture systems, this species is often exposed to various environmental stressors that increase its susceptibility to parasitic infections. This research was conducted from September 2024 to Ma…