ABSTRACT High-density polyethylene(HDPE)is apolymer producedof repeatingethylenemonomer units with the chemical formula (C2H4)n. HDPE is produced through the polymerization process of ethylene, 1-butene, hydrogen, a Ziegler-Natta catalyst, and the addition of hexane as a solvent. Demand for HDPE in Indonesia continues to increase, but local HDPE production is insufficient to meet domestic dema…
ABSTRACT The increasing demand for basic chemicals has prompted Indonesia to produce its own chemicals, which until now have been imported. One example is acrolein, which according to data from the Central Statistics Agency (2023), Indonesia still imports around 2.098.592 kg/year. Acrolein is the simplest unsaturated aldehyde (C₃H₄O) that plays an important role as a raw material for …
ABSTRACT PCI and PCU type girders have similarities in the economic span range, which is 25–40 meters, as stated in the Practical Guidelines for Bridge Technical Planning (2021). This study aims to compare the use of PCI and PCU girders on the Siak Bridge sta. 195+500 Trans Sumatra Toll Road Rengat-Pekanbaru section Lingkar Pekanbaru. The comparison is made based on the parameters of pre…
ABSTRACT The high dependence on fossil fuels has encouraged the Ministry of Energy and Mineral Resources (ESDM) to develop environmentally friendly fuels. In addition to implementing the use of fuel from a mixture of diesel and fatty acid methyl ester (FAME) of 30 percent (B-30), the government is also encouraging the development of green diesel with crude palm oil (CPO) as its raw material. C…
ABSTRACT Hexamine (C6H12N4) is a strategic chemical that is widely used in the production of resins, explosives, pharmaceuticals, textiles, and various national downstream industries. The continuously increasing domestic demand is still dominated by imported products, so the establishment of a hexamine plant in Indonesia is very important to reduce import dependence as well as to strengthen th…
ABSTRACT Peat water has characteristics of reddish-brown color, acidic pH, and high dissolved organic matter content, especially hydrophobic and hydrophilic fractions. These fractions cause the formation of disinfection by-products (DBPs) such as THM and HAA, which are harmful to health. Coagulation is an effective method used to reduce organic matter content in peat water, but the use of synt…
ABSTRACT Peat water contains high levels of dissolved organic matter (DOM). DOM can be classified into four fractions, which are strongly hydrophobic (HPOA), weakly hydrophobic (TPH), charged hydrophilic (HPIC), and neutral hydrophilic (HPIN). These fractions can cause the formation of disinfection by-products (DBPs) such as THM and HAA, so treatment is need to make it suitable for daily use. …
ABSTRACT Regions where hydrological data are not available for the unit hydrograph method, the synthetic unit hydrograph method (SUH) is applied which utilizes the physical characteristics of the watershed. Some of the available synthetic unit hydrograph that utilizes the physical characteristics of the watershed are the Soil Conservation Service (SCS), Snyder, GAMA 1, ITB, and Limantara m…
ABSTRACT HR. Soebrantas Street is one of the main corridors in Pekanbaru City, serving a strategic function as a connecting route between educational, commercial, and residential areas. However, the high volume of vehicles, especially during peak hours, often leads to severe traffic congestion. One of the major contributors to this congestion is the U-Turn facility located in front of Pond…
ABSTRACT Stone Matrix Asphalt mix is an asphalt mix that excels in resistance to permanent deformation (rutting) due to its interlocking structure. However, this mix is costly and requires high amounts of asphalt and stabilizer. The use of stabilizers in this mixture serves to prevent draindown (the separation of asphalt from the mixture) in the form of cellulose fibers or polymer fibers, …
ABSTRACT This study aims to analyze the patterns and behavior of fruit consumption by households participating in the Program Keluarga Harapan in Pekanbaru City. The data were obtained through a direct survey of 315 households selected using the multistage sampling method. Data analysis was conducted using descriptive quantitative analysis and multiple linear regression with the Ordinary L…
ABSTRACT This study is motivated by the rising price of chicken eggs and the strong dependence of low-income households in Pekanbaru City, particularly beneficiaries of the Program Keluarga Harapan (PKH), on this commodity as their primary source of animal protein. The study aims to identify the consumption patterns of chicken eggs based on household categories, types of employment, and ed…
ABSTRACT Cooking oil is a basic necessity experiencing significant price fluctuations, especially for poor households participating in the Program Keluarga Harapan (PKH) in Pekanbaru City. This fluctuation impacts consumption patterns and reduces the purchasing power of poor households. This study aims to analyze the consumption patterns and behavior of subsidized palm cooking oil by Progr…
ABSTRACT This study aims to analyze the consumption patterns of shallots among households participating in the Program Keluarga Harapan (PKH) in Pekanbaru City based on household size, the education level of the mother or household head, and type of employment. The research also identifies dominant factors, their responses, and examines the impact of price and income changes on shallot co…
ABSTRACT This study analyzes the consumption patterns and behavior related to milk, especially sweetened condensed milk among households participating in the Program Keluarga Harapan in Pekanbaru City. This study aims to identify milk consumption patterns across household size, education levels, and employment categories; analyze the dominant factors influencing sweetened condensed milk c…
ABSTRACT This study aimed to: (1) analyze the consumption patterns of wheat flour among households participating of Program Keluarga Harapan (PKH) in Pekanbaru City based on household category, education level, and employment type, (2) identify the dominant factors influencing the consumption of wheat flour among Program Keluarga Harapan (PKH) households, (3) analyze the response of domina…
ABSTRACT This study is motivated by the low level of chicken meat consumption among low-income households, particularly those receiving Program Keluarga Harapan in Pekanbaru City, whose intake remains far below national nutritional recommendations and reflects high vulnerability to food price fluctuations and limited purchasing power. The study aims to analyze consumption patterns, identi…
ABSTRACT This study aims to analyze (1) the financial performance of BUM Desa Amanah, Bukit Gajah Village, during the 2021–2023 period and (2) the management performance of BUM Desa Amanah based on indicators of productivity, service quality, responsiveness, and responsibility. The research employed a survey method with a purposive sampling technique involving 35 respondents. The data u…
ABSTRACT The low production of okra in Riau is caused by low soil fertility, especially inceptisol soil. This study aims to determine the effect of the interaction of palm oil mill solids and NPK fertilizer, a single factor of palm oil mill solids and NPK fertilizer, and to obtain the best combination of palm oil mill solids and NPK fertilizer. This study was conducted experimentally using…
ABSTRACT This study aims to determine the relationships among several quantitative characters and the direct and indirect effects on the yield of maize (Zea mays L.). The research was conducted at the Experimental Field of the Faculty of Agriculture, University of Riau, from June to September 2024, using a Randomized Block Design (RBD) with 11 genotypes and three replications, resulting in 33 …