ABSTRACT In project implementation, it is essential for us to understand project performance to anticipate and monitor whether the project is progressing as planned. The purpose of this study is to calculate the performance index in terms of project cost and time, as well as to estimate the cost and time required to complete an ongoing project using the Earned Value Concept method. The results…
ABSTRACT Chloroacetic acid has the molecular formula ClCH2COOH is a compound in the form of a colourless or transparent crystalline solid with hygroscopic properties, which absorbs water from its environment. Chloroacetic acid is produced from the chemical reaction between acetic acid and clorine gas as the main ingredient with anhydrous acetate as a catalyst, this product is obtained through …
ABSTRACT In 2022, Indonesia recorded imports of ethylene and propylene amounting to 850,633 tons per year and 172,312 tons per year, respectively. To reduce dependence on imports, increase the country’s foreign exchange reserves, and create new job opportunities, the construction of this plant with a production capacity of 500,000 tons per year was designed. Ethylene itself is one of the bas…
ABSTRACT Maleic anhydride is an organic compound that has the molecular formula C4H2O3 with the IUPAC name 2,5-Furandione. The synthesis of maleic anhydride using Lummus technology is characterized by the use of n-butane and air as the main raw materials and the help of a Vanadium Phosphorus Oxide (VPO) catalyst, which is reacted in a fluidized bed reactor. Maleic anhydride is a basic chem…
ABSTRACT Salicylic acid has the chemical structure C7H6O3, is crystalline, white in color, has a sweet taste and is stable in free air. Salicylic acid and its derivatives are chemicals that are quite important in daily use. In the pharmaceutical field, salicylic acid is used as an analgesic, antipyretic, antioxidant, antimicrobial, antiproliferative and cytotoxic agent. In the field of cosmeti…
ABSTRACT Sulfuric acid is the most widely used chemical product that has earned the nickname the life blood of industry. Sulfuric acid is much needed by the chemical industries, including the fertilizer industry (used for the manufacture of super phosphate and ammonium sulfate), petroleum processing, pharmaceuticals, paper and pulp, plastics, batteries, explosives, paints and pigments, and oth…
ABSTRACT Water quality is the main factor for the survival of goldfish in aquascape. Poor quality water will be a source of disease that is susceptible to causing aquatic biota to get sick and die. Control is important to maintain water quality. The author conducted research and designed an Internet of Things-based system that can control the Temperature, pH and Turbidity of Goldfish Aquascape…
Abstract Dimethyl formamide (DMF) is an organic compound widely used as a solvent in various industries such as acrylic fibers, plastics, pesticides, adhesives, and pharmaceuticals. The demand for DMF in Indonesia is largely met through imports. To reduce import dependence and increase national revenue, it is necessary to establish a DMF plant in Indonesia. The planned DMF plant will be locate…
ABSTRACT Propionic acid is a carboxylic acid with the chemical formula C3H6O2. Propionic acid is an intermediate chemical product because it can be used directly or after being processed into salt. Propionic acid is widely used as a preservative in animal feed and grains. The need for propionic acid in Indonesia is still imported from abroad because propionic acid is not produced domestically.…
ABSTRACT The Central Bureau of Statistics (BPS) Riau plays a crucial role in providing data for the government and society. However, the current data collection and information presentation system, which is still table-based, is considered ineffective in illustrating socio-economic conditions, particularly poverty. Additionally, the BPS Riau website has not fully met user expectations, with a …
ABSTRACT An electrical energy plant that uses a synchronous generator when experiencing an increase in load there is a decrease in voltage at the generator output and when the load drops there is an increase in output voltage, so it is necessary to regulate the output voltage by adjusting the excitation current. This research analyzes the performance of a controlled full-wave single-phase rect…
ABSTRACT Kontes Robot Sepak Bola Indonesia-Beroda is a competition held to enhance students's knowledge and creativity in robotics. Competing robots must be able to dribble the ball and score goals autonomously. The HSV color filtering method is commonly used for object detection; however, it has limitations in handling variations in lighting intensity. This study proposes the implementation o…
ABSTRCTABSTRCTABSTRCT ABSTRCTABSTRCT Polyvinyl acetate (PVAc) is a thermoplastic polymer used as a raw material in the adhesive industry. PVAc whether modified or not, in solution or emulsion form, as a homopolymer or copolymer, shows a diversity that makes this adhesive suitable as a binder for various materials, especially wood products and their derivatives. PVAc is obtained from the polyme…
ABSTRACT Melamine is a chemical that has the formula C3H6N6 with another name 2-4-6 triamino 1-3-5 triazine. The need for melamine in Indonesia in the last five years was 133,803,190,000 tons. The main raw material in melamine synthesis is urea, which can be obtained domestically thanks to Indonesia's significant urea production. Establishment of a melamine factory to reduce the need for impor…
ABSTRACT Methyl Methacrylate (MMA) is classed as an organic monomer or organic chemical compound in the ester group. MMA is an ester of methacrylic acid. In industry, MMA is known as the main raw material for the manufacture of polymethyl methacrylate (PMMA), a transparent plastic that is often used as an alternative to glass. MMA is widely used in the leather coating industry, cosmetics indus…
ABSTRACT Hunter GYM is a Fitness Center located on Jalan Manyar Sakti, No. 10B, Panam, Pekanbaru, Riau. The limited number of Trainers at Hunter GYM causes many members, especially beginners, to have difficulty using GYM equipment properly. This increases the risk of injury due to incorrect technique, overtraining, or lack of guidance. This study aims to design and build a GYM Equipment Usage …
ABSTRACT Waste is one of the environmental problems that until now cannot be handled properly, while the ability of waste managers to handle waste is not balanced with its production. Lack of public awareness of the environment means that rubbish is scattered and piled up in various places. The limited number of places to dispose of waste is something that greatly influences the waste problem.…
ABSTRACT Grass management in plantations is carried out to clear the area of the plantation from grass and simplify the process of harvesting the garden area. Making a push lawn mower with a cutting knife height positioner is through production processes such as machining including the lathe process, cutting process, drilling and rolling process. And the machine is planned to be made with seve…
ABSTRACT Waste is one of the environmental problems that until now cannot be handled properly, while the ability of waste managers to handle waste is not balanced with its production. Lack of public awareness of the environment means that rubbish is scattered and piled up in various places. The limited number of places to dispose of waste is something that greatly influences the waste problem.…
ABSTRACT Technology is one of the fields that is now developing quite rapidly. As a manufacturer, product development is inseparable from the presence of technology that makes products simpler and more complex. This research was designed and built a pizza dough machine for household scale with a capacity of 1 – 4 kg, to improve time efficiency and at the same time to facilitate the process o…