ABSTRACT Groundwater in peat areas has a high Fe content. One method of processing to remove Fe levels in groundwater in peat areas is the aeration method using a cascade aerator. Aeration is the process of adding oxygen to water so that it can cause an Fe oxidation reaction which will form Fe(OH)3 precipitates. This research aims to analyze the ability of cascade aerators to reduce Fe le…
ABSTRACT Kuantan Singingi Regency, particularly the city of Teluk Kuantan, is a region rich in culture and tradition, one of which is the Pacu Jalur Festival. In addition to this traditional boat race, the local community actively produces various forms of art such as paintings, handicrafts, Pacu Jalur miniatures, and Kuansing’s distinctive batik. However, the development of the arts has not…
ABSTRACT Tourism in Indonesia continues to grow in various regions. Riau Province is one of the provinces in Indonesia that continues to develop the tourism sector. The diversity of customs, culture and natural beauty can attract tourists to visit. Indragiri Hilir Regency is one of the districts in Riau that has various natural tourist destinations. With an area of 18,812.97 km², there is a l…
ABSTRACT The design of the Study Café in Pekanbaru responds to the growing need for informal learning spaces and alternative workplaces that promote psychological well-being within dense urban environments. Alongside the rising trend of studying in cafés, the phenomenon of Work From Café has also encouraged the development of multifunctional public spaces that support productivity. The dema…
ABSTRACT This research aims to determine the influence of perceptions of tax justice, detection rate, tax rate, and tax information technology on tax evasion. This research uses a sample of UMKM corporate tax pareys in Riau Province. The research used a purposive sampling method wtih a sample size of 96 respondents. Testing this research hypothesis uses SPSS software version 26. The results of…
Periphyton are organisms that live in the lake waters which are attached to substrates, both natural substrates and artificial substrates. In the waters, Periphyton as the primary producer in the food web. This research aims to determine the natural media (wood, bamboo and palm stem) as periphyton substrate. This research used fish houses as media alternative to collect the fish and determine t…
This study aims to examine and analyze the influence of human resource competence, good governance implementation, government accounting standards implementation, and financial accounting system implementation on the quality of local government financial reports (an empirical study on the government of Rokan Hilir). This research uses a quantitative approach. The population in this study consis…
ABSTRACT This research aims to determine the influence of money supply, rice imports and exchange rates on food inflation in Indonesia. The data used in this research is data from 2008 to 2023. The method used is quantitative with a multiple linear regression analysis model with the Ordinary Least Squares (OLS) approach. The results of this study indicate that money supply has a positive and …
ABSTRACT This study aims to examine the influence of family control and diversification strategy on profitability in manufacturing companies in Indonesia during the start-up, growth, mature, and decline stages. The data used in this study is secondary data obtained from the Indonesian Stock Exchange between 2018 and 2023, focusing on manufacturing companies listed and were analyzed using S…
ABSTRACT The OSAKA Irrigation Area (DI) in Rokan Hulu Regency, Riau Province, is an important area in supporting local agricultural productivity. This study aims to analyze the performance of the main dam structures (Kaiti Dam, Pegadis Dam, and Samo Dam) as well as the supply channels in the OSAKA Irrigation Area, based on PUPR Regulation No. 12/PRT/M/2015. The methods used include field …
ABSTRACT The Regional Drinking Water Company (PDAM) Tirta Siak of Pekanbaru City is a government agency in the form of a Regional-Owned Enterprise (BUMD) established based on Regional Regulation (Perda) TK.I of Riau Province No. 7 of 1976. The purpose of this study is to identify the performance of PDAM within the 2017-2021 period and after the revitalization process in 2023. The evaluatio…
ABSTRACT Propylene is a colorless, flammable, low-viscosity organic compound that is gaseous at room temperature. Propylene is widely used as a raw material in the production of polymers such as polypropylene, which is used in the manufacture of various plastic products. In addition, propylene is also used in the chemical industry as an intermediate in the manufacture of other compounds, such …
ABSTRACT Ethyl acetate is a carboxyl ester with the molecular formula (CH3COOC2H5) or (C4H8O2) and a molecular weight of 88.106 g/mol. Ethyl acetate is a clear liquid and has a boiling point of 77oC. Ethyl acetate is a fairly polar solvent that has the advantages of being volatile, relatively non-toxic, and non-hygroscopic. The location of the Ethyl Acetate Factory with a capacity of 28,000 to…
ABSTRACT Dimethyl formamide is an organic compound in the form of a colorless liquid that can be mixed with water and most organic liquids. DMF is a common solvent used for chemical reactions. There are two types of DMF, namely pure DMF and technical DMF. The difference between these two types of DMF is in their physical properties, where pure DMF is odorless while technical DMF (grade/degrade…
ABSTRACT Methyl Methacrylate is a chemical with organic components for leather coatings, the cosmetics industry, the paint industry, the household equipment industry, the polymer industry and for other industries. The manufacture of Methyl Methacrylate at this factory uses the Direct Oxidative Esterification process. This factory is planned to operate for 330 days per year and work continuousl…
ABSTRACT A web-based construction project management system was developed to assist in the management of construction projects. The method used is Research and Development (R&D) with prototype development method. This application is designed to facilitate project management in monitoring, reporting progress and bookkeeping of construction projects. Testing is done in two ways, namely blackbox …
ABSTRACT The dissemination of information related to mosque da’wah activities—such as religious lecture schedules, event registration, and general announcements—is often done manually through social media. This process typically takes about 2–3 minutes daily and may lead to delays or errors in communication. To address this issue, this study aims to design and develop a mosque da�…
ABSTRACT Pineapple peel extract and citronella contain active compounds that have antibacterial properties that can inhibit or kill Staphylococcus aureus and Escherichia coli in hand sanitizers. This study aims to determine the antibacterial activity of hand sanitizer from pineapple peel and citronella extracts against Staphylococcus aureus and Escherichia coli. The research was carried out ex…
ABSTRACT The aims of this research were to study the effect of breadfruit starch coating on barangan banana during storage and to obtain the appropriate breadfruit starch concentration to extend the shelf life of barangan banana. The research was conducted experimentally using a completely randomized design method with treatments OF breadfruit starch concentration: control, 1%, 3%, 5%, and 7%.…
ABSTRACT The need for soybeans in Indonesia continues to increase, but this is not accompanied by an increase in soybean production. One of the efforts to increase soybean production is by expanding the planting area by providing mycorrhiza. Another factor that needs to be considered in the growth of soybean plants is the provision of phosphorus fertilizer. This study aims to determine the eff…