Ferroelectric material is a dielectric material that can be made in the form of to thin films. Barium Titanat (BaTiO3) is a basic ferroelectric component material which made in the form of thin film. Barium Titanat can be doped with Zr and shape in thin films with formula (BaZr0,1Ti,9O3). These thin film of Barium Zirconium Titanat (BaZr0,1Ti,9O3) has successfully made using sol gel method …
Identification of groundwater at Graha Mustamindo Permai 3 Housing Complex, Rimba Panjang Village, District Tambang, Kampar Regency, Riau Province has been done. The method used in this study is Schlumberger Configuration Geoelectric method. Identification of the aquifer layer was carried out on 2 lines with a length of 100 meters. Measurement data was processed using Software Progress. Th…
Indonesia has a tropical climate, where the weather act very influences the climate conditions in Indonesia. Weather conditions greatly affect daily life, both in agriculture, trade, aviation, and others, so a computational approach is needed to predict weather conditions to anticipate extreme weather events. This study aims to create a MATLAB R2015a-based program that can be used to predict we…
Supercapacitor is an energy storage device that has high energy and power density. This device consists of several components, namely electrolytes, separators, current collectors, and carbon electrodes. Electrodes are one of the most important components, because electrodes can determine the performance of the supercapacitor. This study used Nypa Fruticanst Fibers (SBN) as the base material for…
Zinc oxide (zinc oxide, ZnO) is one of the main components of perovskite solar cells (PSC), namely electron transport material (ETM). Improvement of perovskit solar performance can be achieved by modifying the electrical and optical properties of its ETM by doping from other elements. In this research, seleniumdoped ZnO (Se-ZnO) thin film has been fabricated onto fluorine-doped tin oxide (…
Silver nanoparticles has wide range of applications, such as antibacteria, antivirus, catalyst, sensors and photovoltaic. Synthesis silver nanoparticles (AgNPs) using green extract mediation become more popular recently because this process is environmentally friendly, safe, and cost effective. In this study, silver nanoparticles has been synthesized using yellow watermelon rind extract. Waterm…
Research on the analysis of underground water in Rimbo Panjang Village using Sclumberger Geoelectric and Hydrogeochemical methods. Geoelectric is a method used to determine the nature of electric currents in the earth by detecting on the surface of the earth. Identification of the aquifer layer was carried out on 2 lines with a length of 100 meters. Based on the results of the analysis using pr…
This study aims to design a computer program to detect myocardial ischemic through ECG signal patterns and their accuracy. Myocardial ischemia is a heart disorder due to narrowing of blood vessels in the heart wall. The method used is a backpropagation ANN based on Simulink Matlab. Input data trained to recognize target ECG signal patterns based on potential and time in the ST segment. The …
Volume is one of important quantities to sorting process for oil palm fresh fruit bunches (FFB). Computer vision method is an alternative method to estimated volume, which is non-destructive method and provide the quick time show the result. This study is focus to build computer vision system to determine the volume of oil palm FFB using the ellipsoid equation and segmentation process by S…
Research on magnetic characteristic and element content identification from the natural sand of the Rokan River in Riau Province has been done. Sand samples were taken from 5 points with 10 kilograms per point from Rokan River. The samples are dried in the sun before separation between magnetic particles and non-magnetic particles using Iron Sand Separator, this result is called concentrate 1. …
Research on magnetic characteristic and element content identification from the natural sand of the Rokan River in Riau Province has been done. Sand samples were taken from 5 points with 10 kilograms per point from Rokan River. The samples are dried in the sun before separation between magnetic particles and non-magnetic particles using Iron Sand Separator, this result is called concentrate 1. …
The components of sweetness of fruit consist of fructose, glucose and sucrose. The amount of sugar that makes up the sweetness of the fruit always varies but the total amount has never exceeded 30%, so characterization is needed to determine the nature of amount of sugar at various concentrations. Characterization is based on impedance measurements using a PCI 6221 card for data acquisition con…
Silver nanoparticles were successfully synthesized using red dragon fruit peel extract (Hylocereus polyrhizus) as a bioreductor. The synthesis process was mixed the solution AgNO3 1 mM and red dragon fruit skin extract with a volume comparison of 1:3, 1:5 and 1:7 and then mixed with a few drops of NaOH solution 1M until the solution has a pH of 10 each. The solution was stirred using a magn…
Research on the importance of magnetic susceptibility, mass susceptibility and heavy metal content due to automotive contaminants has been performed. The method used to identify heavy metals in this research is experimental method. magnetic susceptibility and X-ray fluorescence. Samples were collected from three main roads in Pekanbaru city namely : Sudirman Street, Ahmad Yani Street and Panger…
This study aims to develop LKPD for science learning based on the SETS approach to improve students' conceptual understanding of global heating material for grade VII SMP and to find out the validity of the science learning worksheet that has been developed. The science learning LKPD development model used is the Research and Development (R & D) model with the 4D model design developed by S. Th…
Student motivation is still low, time is limited in learning physics, and there are some abstract learning materials that are difficult to understand, resulting in misconceptions. So a research was carried out on the development of powtoon-based learning videos with the flipped classroom approach on temperature and heat material for class XI SMA which aims to develop and determine the validity …
The student centered of physics instruction necessitates students to acquire theories, concepts, and principles of physics which are independently constructed by the students themselves. Few if any students enable to understand the complex and abstract concepts of physics theories as it provides diverse symbols, illustrations and equality. The conventional instructional process appears not to f…
The biosynthesis of ZnO photocatalyst material in the form of thin films is increasingly needed as an environmentally friendly alternative to chemical and physical methods, especially in large-scale water purification processes. The aim of this research is to produce a ZnO-based photocatalyst material in the form of a thin layer through an environmentally friendly method and optimize the surfac…
Ferroelectric is one unique materials to be studied and investigated. This material is also applied as a device in electronics such as capacitors, because this material is a dielectric material that has spontaneous polarization and has the ability to change its internal polarization using an appropriate electric field. In this study to increase the capacitance and the dielectric constant values…
The Preparation of ZnO nanoparticles with a method that is simple, inexpensive and utilizing plant extracts as surfactants and stabilizing agents such as hexamethyl tetramine (HMT) and polyvinyl pyrolidone (PVP) and to produce a unique morphology with biosynthetic method has attracted much attention of researchers. In this study, the biosynthesis of ZnO nanoparticles was carried out using the p…