ABSTRACT Terephthalic acid is an organic compound commonly used as a raw material in the production of polyester terephthalate, polyester filament yarns, and also in the production of polyethylene terephthalate (PET). PET is widely used in various products such as plastic containers for beverages and food, electronic devices, textiles, industrial fiber production, and multimedia equipment. Thi…
Email is a way to send letters over the internet. It can be used to communicate between individuals, groups, or individuals and groups. Email can be formal or informal. In the digital age, people are becoming more accustomed to using informal language in everyday communication. This can make it difficult to distinguish between formal and informal email. Foreigners who work in Indonesia may also…
Research has been carried out on the analysis of magnetic susceptibility, composition, and particle size of natural sand in the Rokan River, Riau Province by ball milling method. The sample is dried in the sun before separating the magnetic and non-magnetic particles using an Iron Sand Separator (ISS), the result of this ISS is called the ISS product. ISS products were milled for 70 hours with …
The high level of coffee shop competition currently requires consumer satisfaction analysis to adjust marketing strategies. This research aims to determine consumer characteristics and analyze the level of consumer satisfaction in purchasing products at Lakosa Coffee and Roastery. The sampling method used the convenience sampling method with a sample size of 50 respondents. The data obtained wa…
The Department of Electrical Engineering at Riau University needs technology to support learning and teaching activities so that they can be more effective. Currently, the Electrical Engineering Department already has web-based SITEI, this application is useful for processing proposal and thesis assessment data. The process of reporting progress during a proposal or thesis is also no less impor…
Drynaria sparsisora commonly known as Langlayang fern, is a member of the Polypodiaceae family, typically found in swamps and dense forests. This fern species is characterized by short black fibers covering its rhizome, which has a hard texture. Its leaves display a light green underside and a dark green upper side. This study aimed to isolate secondary metabolites from chloroform extracts of D…
This research aims to diversity of sea cucumber species found in the waters of Kelombok village, Lingga Regency. This research was conducted from January to February 2024. The method used was a survey method, using line transects, where quadrants were placed randomly at the research location, and sampling points were determined by purposive sampling in 2 zones (supralittoral zoning and litt…
This research aims to determine the influence of cooperative member participation on the remaining Hsaha proceeds in the Harapan Bersama West Pasaman multi-business cooperative. The method used in this research is a quantitative descriptive method. With a population of 210 students and a sample of 53 people in this research. The data collection instrument used in this research is a questionnair…
Customer satisfaction is a key to a successful business. There is some factor that impact the customer satisfaction. One of them is the service. To gain customer satisfaction we need to give an excellent service. The purpose of this research is to look how far service excellence impact the customer satisfaction in The Zona Coffee Bar & Food Taluk Kuantan. This research is taking place from Marc…
This research aims to analyze the influence of Gross Domestic Product (GDP), exchange rates and imports on Indonesia's foreign debt in 2008-2022. The type of data used in this research is secondary data in the form of time series obtained from the Central Statistics Agency and Bank Indonesia. In this research, the method used as an analytical tool is Ordinary Least Square (OLS) using multiple l…
Linear alkylbenzene sulfonate (LAS) is included in the group of anionic surfactants. LAS only decomposes by 50% and takes 9 days. LAS is a detergent originating from industrial and petroleum waste. LAS compounds can deteriorate the quality of seawater by reducing the dissolved oxygen in water quality. One method that can be used to control LAS pollutants is by using phytoremediation methods. Ph…
This study aims to determine and analyze the effect of supervision and work discipline on the performance of employees of PT. Lutvindo Wijaya Perkasa Pekanbaru. The research method used is quantitative. The sample of this study were 57 respondents, using data collection techniques using questionnaires. The data obtained, analyzed through linear regression analysis with the SPSS program. The res…
At present, there are many applications that facilitate users in analyzing problems, especially in the field of engineering, such as Inventor, Solidworks, Abaqus, and so on. However, these commercial applications come with a relatively high cost, heavy software size, and strict licensing rules. This, of course, raises concerns for users, especially mechanical engineering students at the Univers…
The issue addressed in this research is the groundwater condition in Padang Terubuk Village. It should be noted that residents do not dispose of their waste correctly, and there are the community still uses many illegal waste dumping sites for household waste disposal. Therefore, research was carried out on groundwater quality by conducting analysis of groundwater distribution in the research …
Tujuan penelitian ini olalah untuk roengetahui bubungan kandungaa informasi petaporan kerugian dengan return saham pada perusahaan consumer goods. Populasi dalara penelitan mi adalah peroabaan consumer goods yang terdaftar di BEL sebanyak 66 perusahaan Penentuan jumbh sampe! dilakukan dengan minus siovin dan diperoleh sebanyak 40 perusahaan untuk dijadlkan sampeL Sampei dfoatukaa dengan t…
This research aims to find out how the socio-economic status of parents effect the intensity of students' hanging out behavior at the study cafe in Warung Six cafe, Simpang Baru Village, Pekanbaru City. The method used is a survey method by distributing questionnaires with quantitative analysis data processing. Data collected by distributing questionnaires and also observing and documenting to …
This research departs from several phenomena that are a problem, namely that Pekanbaru Transmetro stops still do not meet standards and are not equipped with facilities for people with disabilities. Then the condition of the buses still does not provide opportunities for passengers with disabilities. The research was conducted using a qualitative descriptive method which aims to describe the ph…