The aim of the study was to determine the optimal doses of boster grotop in increasing the growth and survival of baung fish (Hemibagrus nemurus) in the recirculation system. This research was conducted from August until October 2019 for 40 days at the Technology Laboratory Aquaculture Faculty of Fisheries and Marine Riau University. Which method used in this study is an experimental method, us…
ABSTRACT Biomass is a fuel that can be used directly or processed first into solid, liquid or gas fuel through a certain process. Liquid smoke produced from the torrefaction process is a condensation liquid that comes from heating biomass without oxygen. The clarification of liquid smoke used as a food preservative must be carried out through a distillation and adsorption process first. The ob…
ABSTRACT Salicylic acid has the chemical structure C7H6O3, is crystalline, white in color, has a sweet taste and is stable in free air. Salicylic acid and its derivatives are chemicals that are quite important in daily use. In the pharmaceutical field, salicylic acid is used as an analgesic, antipyretic, antioxidant, antimicrobial, antiproliferative and cytotoxic agent. In the field of cosmeti…
ABSTRACT The issue of heavy metal contamination in industrial wastewater, particularly ferrous ions (Fe²⁺), poses a serious threat to the environment and human health. One effective and eco-friendly solution is the adsorption method using biomass-based adsorbents. Coffee grounds, an organic waste rich in lignocellulose, show great potential as a raw material for biomass adsorbents. Chemical…
ABSTRACT The issue of heavy metal contamination in industrial wastewater, particularly ferrous ions (Fe²⁺), poses a serious threat to the environment and human health. One effective and eco-friendly solution is the adsorption method using biomass-based adsorbents. Coffee grounds, an organic waste rich in lignocellulose, show great potential as a raw material for biomass adsorbents. Chemical…
ABSTRACT Sodium Silicate is a raw material that is widely used as a filler in the detergent, soap and toothpaste industries. Sodium silicate can be synthesized from silica (SiO2), which can be obtained through an extraction process from materials containing silica such as sand, clear glass bottle waste and fly ash. In this study, the synthesis of sodium silicate was carried out using silic…
ABSTRACT This thesis aims to analyze the effect of Transfer Pricing, Tunneling Incentive and Sales Growth on Tax Avoidance, in Manufacturing Companies Listed on the Indonesia Stock Exchange during the period 2021-2023. This study uses a quantitative method with secondary data in the form of the company's annual financial reports. The sample was selected using a purposive sampling techniqu…
ABSTRACT This study aims to analyze the effect of Transfer Pricing, Thin Capitalization, and Institutional Ownership on Tax Avoidance (An Empirical Study on Multinational Manufacturing Companies Listed on the Indonesia Stock Exchange in 2021–2023). This research employs a quantitative method using secondary data in the form of annual financial reports. A total of 18 companies were selec…
ABSTRACT Law Number 10 of 2016 concerning the Election of Governors, Regents, and Mayors stipulates that candidates for regional heads and their deputies must be at least 30 years old. This provision aims to ensure the maturity and experience of candidates in leading. Therefore, the purpose of this thesis research is first, to find out the regulations on determining the age of regional hea…
ABSTRACT The ripple mill mechine is a tool for breaking and separating palm kernels from their shells, in this mechine there is a rotor part that rotates on the ripple plate, the stationary part, the seeds enter between the rotor and the ripple plate so that they collide and break the shell from the core. The risk that is often experienced by the ripple mill machine is the occurrence of fallin…
ABSTRACT Pulp Dryer is one of the important business units of pulp and paper companies in pulp production that will produce slush pulp into pulp sheet. The main process in producing slush pulp into pulp sheet is the drying process. The drying process occurs in the dryer, where the dryer will require heat to dry the pulp sheet. Heat recovery system is one of the components in the drying process…
ABSTRACT Forming section is one of the key stages in the papermaking process, where fiber sheets begin to form from a mixture of pulp and water. This stage determines the initial characteristics of the paper sheet, including fiber distribution and Dryness. In the papermaking process, the level of Dryness in the forming section is one of the important parameters that affect process efficiency a…
ABSTRACT Pipes for electrical and telecommunication cable networks made of High Density Polyethylene (HDPE) composite materials reinforced with fiberglass in Pekanbaru are generally installed close to highways, some are on the ground surface, underground, or in water passing through the Siak River or other rivers. Pipes that are on the ground surface will get quite high heat intensity during t…
ABSTRACT Recausticizing is a process of chemical recovery plant that is tasked with converting green liquor into white liquor as the main product and lime mud as a by-product. Lime mud is one of the by-products of recycling in the pulp industry process produced from the recausticizing process which has a high CaCO3 content so that it can be used as the main material for the calcination process…
ABSTRACT This research aims to identify and calculate digester machine performance at PTPN V Sei Tapung based on Overall Equipment Effectiveness (OEE) values and analyze damage to digester machine components using the Failure Mode and Effect Analysis (FMEA) method. Overall Equipment Effectiveness (OEE) is a method of measuring the overall effectiveness of a production machine which involves me…
ABSTRACT PT. Indah Kiat Pulp and Paper Perawang is a company in the pulp and paper industry that in its operations requires quality human resources (HR) to achieve optimal performance. This study aims to analyze the factors that influence employee performance in the HRD and Administration Division, with a focus on work motivation and work environment. The method used is quantitative descr…
ABSTRACT Oil palm is one of Indonesia’s leading commodities that plays an important role in the national economy. Productivity serves as an indicator of the success of oil palm cultivation. The productivity of oil palm is influenced by various combinations of production factors. The development of oil palm plantations provides benefits in increasing the income of farmers and the surround…
ABSTRACT Senapelan Sub-district in Pekanbaru City is one of the areas prone to one of the areas that is quite vulnerable to flooding, especially around the Senapelan River. This risk requires an effective mitigation strategy, including the planning of evacuation routes and the establishment of safe gathering points. This research aims to analyze and design evacuation routes and gathering point…
ABSTRACT Flooding is one of the natural disasters that frequently occurs in the Air Hitam River area, Payung Sekaki District, Pekanbaru City. Addressing this disaster requires planning effective evacuation routes and the designation of gathering points to minimize the risk of casualties and material losses. This study aims to analyze and determine evacuation routes and gathering pointsbased on…
ABSTRACT This research aims to develop a roundness measuring instrument by adding a centering aid to the Roundness Tester Machine. Accurate roundness is crucial for ensuring product quality, especially in machine components. This study analyzes the effect of using the centering aid on the roundness measurement results of aluminum shafts. The testing method employed is the ring method, with mea…