ABSTRACT The design of the Methyl Tertiary-Butyl Ether (MTBE) plant with a production capacity of 60,000 tons per year in Bontang, East Kalimantan, aims to meet domestic and international needs for environmentally friendly fuels. The location chosen is strategic because it is close to raw material sources, has adequate infrastructure, and has good accessibility to export markets. This project …
ABSTRACT Propylene glycol is one of the organic compounds commonly used as a food preservatives, cosmetic raw materials, wetting agents for chewing gum, monomer in the synthesis of polyester, and anti-freeze liquids. The demand for propylene glycol is increasing along with the development of the industry, especially the cosmetics and textile industries. The market value of propylene glycol…
ABSTRACT This study aims to implement a Virtual Private Network (VPN) using Wireguard as a security solution on the Sahabat Net network in Perawang City. Sahabat Net, an RT/RW Net business, provides internet services with connections between users around Perawang, but currently does not have adequate network security. The use of Wireguard VPN is expected to provide better data security with pr…
ABSTRACT Most of Indonesia's territory is water, so sea transportation plays an important role in people's lives. This transportation is a ship. Ships function as a service for transporting goods and passengers. In addition, ships are also often used in industry, mining and trade. This has resulted in increasing ship production every year. Along with the increase in ship production, the need f…
ABSTRACT Pentaerythritol is a chemical used as a resin in the explosives industry, paint industry, lubricants, and other sectors. The production of pentaerythritol in this factory utilizes the ERCROS process. The plant is designed to operate for 330 days a year, continuously working 24 hours a day with a capacity of 20,000 tons per year, and will be located in Serang, Banten. The chosen compan…
ABSTRACT An increase in occupational diseases, particularly Carpal Tunnel Syndrome, is increasingly occurring in workers who perform repetitive movements and prolonged hand use. Although the prevalence of carpal tunnel syndrome in the world is quite high, the related data in Indonesia is still unclear, indicating low public awareness of this disease. For this reason, a web-based expert system …
ABSTRACT In the Radio over Fiber (RoF) system, a reduction in received radio frequency (RF) power often occurs due to chromatic dispersion in optical fibers, known as dispersion power fading (DPF). To address this issue, a new technique called Unbalance Sideband Modulation (USM) is proposed. USM is implemented by modulating the optical carrier signal using an RF signal with a single-drive Mach…
ABSTRACT This study aims to determine the optimum tilt angle and orientation of photovoltaic panels to increase the efficiency of solar power generation (PLTS) in Pekanbaru, which has abundant solar energy potential. Experiments were conducted using four monocrystalline PV panels with a capacity of 20 WP with tilt angles of 10°, 15°, 20°, and 25° and orientations of north, east, south,…
Fishermen's perceptions of senangin fishing efforts and their relationship with the scale of fishing efforts in Bagan Barat Village seen from traditional, post-traditional, and commercial fishermen. One of the fish production is senangin fish using gill net fishing gear. Based on secondary data in 2021, fisheries production was recorded at 33,847.46 tons, of which 41,141 tons or 98% were the re…
ABSTRACT Indonesia, as a tropical archipelagic country, possesses rich biodiversity influenced by its location between two continents (Asia and Australia). Although its land area constitutes only about 1.3% of the Earth's total surface, Indonesia is home to approximately 25% of the world’s flowering plant species, including 20,000 endemic species. Threats to biodiversity, particularly endemi…
This study aims to determine the Perception of Physical Education Teachers on the Performance of Students of the Introduction to School Fields (PLP) Department of Sports Education, University of Riau in 2023: Case Study at SMK Pekanbaru City. This study is a quantitative descriptive study using a survey method. The sample in this study was 20 Physical Education teachers, both male and female te…
ABSTRACT Shampoo contains active substances and additives such as viscosity thickeners, surfactants, foam stabilizers, preservatives and other additives. One of the things that need to be considered in formulating shampoo includes the viscosity. Carbopol 940 has a high viscosity as a thickener. This study aims to obtain the best concentration of carbopol 940 on the characteristics of shampoo m…
ABSTRACT Palm starch dregs is a side waste from the palm starch filtering process that contains lignocellulosic components. Separation of lignocellulosic components can be done through a delignification process. One method that is often used in the delignification process is the alkaline method. The research was conducted by experiment using a Completely Randomized Design (CRD) with four treat…
ABSTRACT Sago starch waste was one type of waste produced during the sago flour processing process. Sago starch waste contains cellulose, hemicellulose, lignin, and a small amount of remaining starch. This study aims to obtain the best cooking solution variation in the cellulose extraction process of sago starch waste using the organosolv method. The study was conducted using the Completely Ra…
ABSTRACT Pie is a small snack consisting of pie crust and toppings. Generally, pie crusts come in sheets, rounds, bowls, lotus flowers, etc. The main component in making cookies is wheat flour. This research aims to obtain the best comparison of MOCAF and green bean flour on the quality of pie crust. This research was carried out experimentally using a completely randomized design with fou…
ABSTRACT Durio seeds are one of the products of durian fruit that has not been utilized optimally. The use of durio seeds to are considered to be able to used as flour considering the chemical properties of the durio seeds. The aim of this research was to obtain the best concentration of Lactiplantibacillus plantarum on the physico-chemical properties of durio seed flour modified by fermentati…
ABSTRACT One type of biodiversity found in Indonesia is fungi. Fungi usually thrive in moist environments. As heterotrophic organisms, fungi depend on organic substances from other organisms to support their lives. This study aims to identify the types of macroscopic fungi and analyze the habitat vegetation of macroscopic fungi found in the Imbo Putui Customary Forest, Tapung District, Kampar …
Penelitian ini mengenai efektivitas Ludo Word Game (LWG) dalam meningkatkan penguasaan kosakata bahasa Jepang siswa kelas XI SMK Kansai Pekanbaru. Berdasarkan hasil pengamatan peneliti pada saat proses pembelajaran bahasa Jepang, menunjukkan bahwa siswa mengalami kecenderungan konsentrasi belajar yang kurang, dan penguasaan kosakata yang rendah, yang mengakibatkan rendahnya angka ketuntasan sis…
ABSTRACT Sumatran elephants (Elephas maximus sumatranus) are key animals that determine whether or not the forest is maintained. This research aims to determine the availability of elephant food types in Sebanga PLG.The data collection method used transects and plot lines with a size of 20x20m and 1x1m to obtain natural food production data Stratified sampling technique was used to locate the …
ABSTRACT Acacia crassicarpa is widely cultivated in Industrial Plantation Forests (HTI) due to its fast growth and suitability as pulp raw material. However, Paracoccus marginatus is a pest known to infest acacia nurseries at PT. RAPP, causes chlorosis and sooty mold, significantly reducing seedling productivity. Effective pest management is crucial for producing optimal seedling. and botanica…