Inefficiency in assigning preachers for Islamic preaching activities often occurs due to the placement of preachers at locations that are too far apart, leading to delays and logistical challenges. In Kampar Regency, diverse geographical conditions exacerbate this issue, resulting in suboptimal preacher placements. This study aims to optimize preacher assignments by considering geographical dis…
Abstract : This study aims to enhance the learning process and improve students' Mathematical Reasoning Skills (MRS) through the implementation of the Problem-Based Learning (PBL) model. The initial MRS test results for Class X-3 at SMAN 6 Pekanbaru were relatively low, with an average score of 46.07%. This was attributed to students' unfamiliarity with reasoning-based questions, insufficient u…
Abstract - The limitations of learning tools that are relevant to social issues and science and require students to be active in solving everyday problems that are relevant to chemistry material. By providing SSI-based LKPD as an alternative that is expected to help students connect lessons related to everyday life in society. This study aims to produce SSI-based LKPD on the subject of green ch…
Abstract: The research aims to produce CORE-based E-LKPDs on the subject of hydrocarbons that are valid and feasible to use. The research includes validation and limited trials. This study used a Research and Development (R&D) development research design with the 4-D model (Define, Design, Develop, Disseminate) modified 3-D (Define, Design, Develop). The results of validation by material va…
The aim of this research is to develop an E-Student Worksheet based on Phenomenon-Based Learning on Reaction Rate Material Using the Wizer.me website for Class XI Highschool/MA. The development of this E-Student worksheet was carried out because teachers have not used digital learning media and used the Phenomenon-based Learning model in their learning, especially in reaction rate materials. Th…
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 also focus…
Watersheds experience problems such as uncontrolled flooding in the rainy season, drought in the dry season, and declining water quality. The emergence of these problems requires watershed management efforts. In general, hydrological analysis methods can be done with probabilistic analysis, if there is a minimum of 10 years of discharge records on the river under review. However, this method is…
Meteorological drought is a type of drought caused by low precipitation, measured based on the level of dryness relative to normal or average conditions, as well as the duration of the dry period. This study aims to analyze the meteorological drought index on peatland in Pelalawan Regency using the Google Earth Engine (GEE) platform and utilizing satellite precipitation data. One of the sources…
Riau Andalan Kertas (RAK) is one of the business units of PT. Riau Andalan Pulp and Paper which functions to produce paper in the form of customer rolls, cut sizes and folios. RAK has several departments, one of which is the finishing department, which consists of converting 1 and converting 2. The purpose of this study is to identify and analyze factors that contribute greatly to the folio mac…
Plastic has properties that are non-biodegradable or cannot be broken down by decomposing organisms in nature, so plastic requires a very long process to decompose by itself. One method of processing plastic waste is pyrolysis. Pyrolysis is a degradation process of thermal biomass by heat in the absence of oxygen. This research was carried out with the aim of knowing the results of plastic pyro…
Drying agricultural products using sunlight is considered the best method for green and sustainable conservation of agricultural products. Advancements in effective drying system designs and the characteristics of drying agricultural products will enhance conservation efforts. Sun drying methods appear beneficial as they help address major issues faced by developing countries, such as the rapid…
Experimental research has been carried out on air conditioning machine as water heater by replacing R-22 refrigerant with Musicool MC-22 hydrocarbon refrigerant. The test lasted for 120 minutes with a time interval of 5 minutes. The variables that are varied are without evaporative cooling and with evaporative cooling. The average test results on the air conditioning machine as a water heater w…
The rapid development of technology today provides convenience for humans in various fields, namely information, communication, business, and especially in the field of education. One technology that supports the education sector is Augmented Reality (AR). Science learning, one of which is the solar system, is learning that is difficult for some people to understand, because the learning media …
Roads as transportation infrastructure have a very vital role in people's lives. Therefore, the condition of the road surface is an important aspect because it directly affects the comfort and efficiency of road use by all users. The level of road surface roughness is an indicator of pavement condition, which not only impacts driving comfort but also affects vehicle operational efficiency. This…
The four-way intersection named Simpang Empat Panam in Pekanbaru City is a signalized intersection that serves as access to the city center connecting Garuda Sakti street, Hr Soebrantas street, Raya Kubang street, and Raya Pekanbaru-Bangkinang street. This intersection is one of the densest traffic flow meeting points with very severe congestion levels, especially during peak hours. This dense …
Indonesia is a country with a tropical climate, characterized by relatively high air temperatures and humidity levels, which can affect indoor comfort. To maintain comfortable indoor conditions, air conditioning systems are used. The refrigerant employed is hydrocarbon refrigerant, which has a low global warming potential, does not harm the ozone layer, and can be directly replaced (drop-in sub…
This study aims to explore the potential utilization of Low Density Polyethylene (LDPE) plastic waste through pyrolysis method as an alternative fuel oil. In this study, variations in temperature (350°C, 400°C, 450°C) and holding time (45 minutes, 60 minutes, 75 minutes) with 500 grams of test material were applied to evaluate their influence on the pyrolysis results. Density, viscosity, cal…
The Department of Electrical Engineering at the University of Riau has developed the SITEI UNRI KP/Skripsi system. This system allows students to register for their internships (KP) and thesis (skripsi) online. Although the system has facilitated student processes, several limitations still need to be addressed to enhance efficiency and accuracy. Automation helps reduce administrative burdens, …
The development of fiber optic network technology requires accurate, practical, and efficient measurement tools to monitor the performance of optical signals. This research proposes the design of a microcontroller-based Optical Power Meter (OPM) using an SFP sensor to detect optical signal power at wavelengths of 1310 nm and 1550 nm. The OPM is equipped with an LCD screen to display measurement…
This research designs a package receiving Smartbox tool that supports Cash on Delivery (COD) transactions by utilizing Internet of Things (IoT) technology. The need to improve the goods delivery experience, especially in the COD method, encourages the development of systems that can facilitate the receipt of packages safely and efficiently. This system integrates Loadcell sensors, NodeMCU ESP82…