ABSTRACT The surfactant industry in Indonesia is still very limited, even though its use is increasing. According to data from the Chemistry Center of the Indonesian Institute of Sciences (LIPI), Indonesia needs around 95 thousand tons of surfactants per year while domestic production capacity is only around 55 thousand tons per year so that as much as 44 thousand tons of surfactants are still…
ABSTRACT The preliminary design of a diisopropyl ether plant with a fixed bed reactor as the main equipment has a production capacity of 56,000 tons per year. The raw materials used in this plant design are acetone (C₃H₆O) and hydrogen (H₂). The production process of diisopropyl ether involves hydrogenation and etherification. The preparation of raw materials begins by adjusting the …
ABSTRACT Vinyl chloride monomer (VCM) is a primary raw material in the production of polyvinyl chloride (PVC), widely used across various sectors such as automotive, construction, and household applications. The demand for VCM in Indonesia continues to rise annually, yet a significant portion is still met through imports. To reduce import dependence and support domestic industrial growth, a vi…
ABSTRACT Acrylonitrile is a clear, colorless liquid with a slightly pungent odor. It is used as a chemical intermediate in the production of acrylic fibers, plastics, synthetic rubber, and numerous other products. The fluidized bed manufacturing process for acrylonitrile was developed by scientists at The Standard Oil Company (SOHIO). To meet the demand for acrylonitrile, a production plant wi…
UV-Vis spectrophotometers have been used widely and are commercially available. However, the weakness of the technique is that the price isrelatively expensive. Therefore, low-cost analytical instrument with high resolution are needed, especially visible light spectrophotometers. This research was carried out with a working principle that resembles a visible light spectrophotometer using simple…
The Purpose of this final project is to find out the implemenmtation of houseman duties in the public area of Grand Bunda Hotel. Houseman is one of the parts that plays an important role in the Grand Bunda Bukittinggi Hotel. A houseman does their job in accordance with the SOP (Standar Operational Procedure), is responsible for providing a good and comfortable welcome to guests in finding a roo…
The purpose of this study is to describe the appeal of the Asia Farm Hay Day Pekanbaru tourist attraction. This study uses a qualitative method. Data collection methods through observation, interviews and documentation. Qualitative research is an analysis whose purpose is to use interview results to produce a clear and detailed picture of field observations based on the facts found. The results…
This research was conducted on the Simpang Kualu Suka Karya pedicab driver community in Pekanbaru city with the aim of finding out and explaining the survival strategies of motorcycle rickshaw drivers in the Suka Karya Pedicab Association (PBSK) community. The basic review in this study uses the theory of survival strategies and social solidarity. To answer the problem formulation, a descriptiv…
This research was carried out in Jorong Koto Tangah Hilir, Tilatang Kamang District, Agam Regency. This study intends (1) to find out the current role of mamak towards nephews in the Minangkabau community in Jorong Koto Tangah Hilir (2) to find out the factors that cause changes in the role of mamak to nephews in the Minangkabau community in Jorong Koto Tangah Hilir. To answer the purpose of th…
The aim of this research was to obtain the physical activation time for the characteristics of activated charcoal from palm fronds in accordance with Indonesian National Standard No. 06-3730-1995. The research was carried out experimentally using a completely randomized design (CRD) consisting of five treatments and three replications. The treatment in this study ware physical activation with a…
This research aims to develop snakes and ladders learning media in history learning, especially material on the Indonesian national movement as an effort to increase the learning motivation of class XI students at SMAN 3 Mandau. This type of research is development research with the ADDIE development model which consists of 5 stages, namely analysis, design, development, implementation and…
This study was conducted to identify the types and potential of anoxygenic photosynthetic bacteria (ABF) from Dumai waters, Riau Province as biodegradation agents of solar oil. The study was conducted from January to March 2025. Sea air samples were taken from three different stations in Dumai waters reflecting the port, estuary, and industrial areas, using a purposive sampling method. The proc…
This research aims to develop a product in the form of interactive learning media for listening learning in elementary schools that is valid and practical. The method used in this research is the Research and Development development method using the ADDIE model. The ADDIE model has 5 stages starting with Analysis, Design, Development, Implementation and Evaluation. In developing this inter…
This research aims to develop a valid and practical product of interactive learning media on photosynthesis subject in grade IV elementary school. The method used in this research is the Research and Development using the ADDIE model. This ADDIE model has 5 stages, namely: Analysis, Design, Development, Implementation and Evaluation. In developing this interactive learning media, the developed …
This research aims to develop the media of Historical Comics (Komirah) in the learning of Pancasila Education for the rest of grade V of elementary school that is valid and practical. This research uses Development using the R&D (Research and Development) method with 4D models or 4-D Models. 4D models or Four-D Models are carried out with 4 main stages, namely define, design, development, and d…
The problem in this research is that students' level of mathematical problem solving ability (KPMM) is low, while it is important for students to master KPMM in learning mathematics. Therefore, the aim of carrying out this research is to produce learning tools on two-variable linear equation systems material to facilitate KPMM for class VIII SMP/MTs students. The research trial involved subject…
This study aims to determine the effect of product innovation and e-commerce on the competitiveness of convection MSMEs in Tuah Madani District. The method used in this study is quantitative descriptive, with a respondent population of 32 convection business actors in Tuah Madani District and samples taken from the entire total population.. For the independent variables in this study are produc…
The aim of this research is to identify the types and meaning of figurative language that found in the Jakarta Post Newspaper that was published on July, 22-26, 2024. The research used qualitative content analysis. The researcher collected the data by non-participant observation, data was collected through documentation techniques. The research found 45 sentence that used figurative language. T…
Code mixing is a common phonemon in societies where two or more languages are used within one sentence. Data was collected through documentation technique because the data source from boy William’s video YouTube channel with guest star actor Reza Rahardian. This research has two objectives. Firstly, the research aims to identify the various types of code mixing in this video using Muysken's t…
This research aimed at examined if there is a significant effect of using video on SMAN 1 Inuman students' listening comprehension skill. This research used quantitative research was used pre-experimental design. One-Group Pretest- Posttest as a research design. In this design, one group was selected to measure level of progress before and after treatment. Researcher was applied a normality…