Supercapacitors are energy storage devices that have fast charge-discharge times and long cycle lives. Activated carbon is used as an electrode material for supercapacitors because it has a high specific surface area, chemical resistance, and good electrical conductivity. This research focuses on the manufacture of carbon electrodes made from oil palm male flower (OPMF) with the addition of cat…
Quality human resources are the main factor in the progress of a nation in the era of globalization, especially in the 21st century. Quality education is very important to create superior human resources, so that education is not only an obligation, but also an unavoidable necessity in this complex era. The goal of national education in the 21st century is that it requires quality, not quantity…
This research aims to determine the improvement of students' multirepresentation abilities by using guided inquiry learning models assisted by PhET simulations and to determine the effect of guided inquiry learning models assisted by PhET simulations on multirepresentation abilities on mechanical wave material at SMAN 14 Pekanbaru. The type of experimental research used in this research is none…
Pendidikan adalah salah satu kunci kemajuan suatu bangsa, dengan adanya sistem pendidikan yang baik akan menghasilkan sumber daya manusia yang berkualitas. Pendidikan diwujudkan dengan suasana belajar dan proses pembelajaran agar peserta didik secara aktif mengembangkan potensi dirinya untuk memiliki kekuatan spiritual keagamaan, pengendalian diri, kepribadian, kecerdasan, akhlak mulia serta ke…
This research aims to describe the application of case based learning model assisted by smokeless incinerator to improve students' critical thinking skills and to determine the difference in students' critical thinking skills between classes that apply case based learning model assisted by smokeless incinerator and classes that apply conventional learning model on temperature, heat, and expansi…
Pendidikan merupakan usaha dalam diri untuk mengembembangkan kualitas sumber daya manusia. Guru sebagai pelaksana pembelajaran yang merupakan bagian dari sistem pendidikan nasional sebagai tenaga profesional harus memiliki empati kompetensi yaitu kompetensi pedagogik, kepribadian, sosial dan profesional, sehingga dapat memahami dan mengembangkan kurikulum dalam pembelajaran. Implementasi pembel…
Penelitian ini bertujuan mendeskripsikan hasil belajar keterampilan sosial siswa melalui penerapan model pembelajaran kooperatif tipe STAD pada materi bunyi. Subjek dalam penelitian ini adalah kelas IV SD 016 Tambusai TP. 2008/2009 yang beijumlah 50 orang. Instrumen penelitian ini adalah lembar pengamatan keterampilan sosial. Data di analisis dengan menggunakan analisis statistik deskriptif…
ABSTRACT Tampan a sub-district of Pekanbaru city which has the most densely populated area in Riau. This area requires consumption of water which is readily found from groundwater. It is important to investigate the distribution of groundwater, the purpose of this study is to identify and to determine the quality of groundwater. The data obtained in the acquisition process is used to calculate…
The research carried out in Simpang Baru Village aims to determine the potential of underground water using the Wenner configuration geoelectric method. Underground water potential is examined based on the resistivity values of rocks/minerals. Determination of the resistivity value of rocks/minerals is carried out by measuring the current and potential difference using a resistivity meter on a …
The phenomenon of supercapacitors as an energy storage technology is increasingly becoming a concern discussed by various group of researchers. The development of supercapacitors based on agricultural waste is one of the innovations for making activated carbon electrodes. The main components of supercapasitor include electrodes, current collectors, electrodes, and separators are the main import…
Research on determination of changes in the composition and size of the magnetic particles of Rokan River Natural Sand has been carried out. The Changes ware carried out by converting it into magnetic iron oxide nanoparticles. The sample was separated using an Iron Sand Saparator (ISS) and then followed by separating magnetic and non-magnetic materials using a Neodymium Iron Boron (NdFeB) magne…
Determining the presence and quality of underground water using the Schlumberger geochemical-geoelectric method has been carried out on Jalan Garuda Sakti KM 8, Tapung District, Kampar Regency. This research aims to determine the presence of groundwater by drilling. Meanwhile, geochemical testing determines water quality using the parameters pH, TDS, conductivity, and turbidity. IP2WIN Software…
The Wenner configuration geoelectric method is used to obtain a picture of subsurface structures and determine the depth, distribution, and lithological properties that affect the movement of underground water. Meanwhile, geochemical analysis is carried out to evaluate the quality of underground water in terms of physical and chemical parameters such as pH, electrical conductivity, TDS, and tur…
Iron oxide particles are an iron oxide material that has very unique magnetic properties. This research was carried out with the aim of studying and determining the magnetic properties, surface morphology and composition of iron oxide particles. Iron oxide particles have been prepared using ball milling in three stages based on Ampalu Pariaman beach sand, West Sumatra. The total grinding time i…
Wenner configuration geoelectricity was used to delineate subsurface structures and establish the depth, distribution, and lithologic characteristics that affect groundwater flow. Geochemistry was a method used to determine the quality of underground water. Based on the results of geoelectric data processing, the subsurface depth reaches 12.4 meters. The lithology of the study area consists of …
Thin film shaped dielectric material is applied to the transducer, switches, sensors, capasitors, and memory with the advantage that memory is easy to modify and is permanent. Thin film (0,7)BaTiO3-(0,3)BaZr0,5Ti0,5O3 (BT-BZT) is made as dielectric material transducer, multilayer ceramic capacitor (MLCC). The study uses the sol gel method on FTO substrate, then annealed at 700ºC, 750ºC, and…
Activated carbon can be defined as an amorphous carbon compound with high porosity and a surface area of about 500-2000m2/g. Activated carbon is generally produced through several stages, i.e., process of dehydration, pre-carbonization, chemical activation, carbonization, physical activation. The preparation of carbon electrodes from young coconut fiber (YCF) aims to determine the effect of che…
Supercapacitors are electrochemical capacitors that have a greater energy density than conventional capacitors. Supercapacitors consist of four components, namely electrolyte, separator, current collector and electrode. Electrodes are the main component in supercapacitors which function as charge storage to produce energy. Supercapacitor electrode materials from biomass-based carbon materials h…
Geoelectricity is a geophysical method used to determine the geological conditions below the earth's surface based on variations in the resistivity values of rock types and geochemistry to determine air quality. Therefore, it is necessary to research the quality of groundwater, considering that in Karya Indah Village, no research has ever been carried out on this matter. This research aims to d…
Physics is one of the compulsory subjects at high school level which studies natural phenomena in the form of matter, energy and the interaction processes between the two. One of the educational goals in learning physics is that students are able to understand physics concepts so that they can later be applied in everyday life. However, in reality physics learning at school does not fully facil…