Solving model Newton’s Law matter for grade X student of senior high school The learning tools consist of learning implementation plan (RPP), student worksheet (LKPD) and students cognitive achievement. This research is aimed to produce learning tools with means ends analysis learning model based on problem-solving that are valid in Newton’s Law for X grade student of senior high school. Th…
The existence of learning motivation that comes from the teacher and high learning interest from the students themselves can affect the increase in student achievement. Learning achievement obtained by students is influenced by high learning motivation, because with high learning motivation a student will do something that he is interested in and likes. This study aims to determine and analyze …
Supercapacitor is an energy storage device with electrochemical characteristic that can provide high energy and power density. The supercapacitor cell consists of a current collector, electrode, electrolyte and separator. This study used young coconut fiber biomass as a supercapacitor electrode, H2SO4 as an electrolyte, 316L stainless steel as a current collector and used mask as a separato…
The interpretation of groundwater in Rejosari Village, Tenayan Raya, Pekanbaru City has been carried out using geochemical and geoelectrical methods using Wenner rules. This study aims to identify aquifer layers, to determine flow patterns, and groundwater quality. Measurements were carried out on two tracks with a length of 68 meters and 100 meters respectively. Based on the results of dat…
Supercapacitor is a storage device consisting of carbon electrodes, separator and electrolyte and current colector. In this research, carbon electrodes were made from young coconut fiber biomass with variations in KOH mass ratio of 1:0.20; 1:0.25 and 1:0.30 have been successfully prepared. The carbonization temperature and activation temperature are 550˚C and 750˚C respeetively. Carbon el…
The measurement of the magnetic susceptibility and composition of magnetic particles from the natural sand of the Rokan River in Riau Province has been done. Sand samples were taken at 5 different points with a distance of 500 meters from each point. The sample taken at each point has a mass of 1 kg. The samples were dried in the sun ray before separation between magnetic particles and non-…
The crystallinity and magnetic susceptibility iron oxide of natural sand from Sungai Suci beach at Pondok Kelapa District, Central Bengkulu Regency, Bengkulu Province have been carried out. The beach sand that has been processed using Iron Sand Separator (ISS) then the product was separated again between iron oxide and non-iron oxide using Neodymium Iron Boron (NdFeB) magnet, the result is …
Mass is one of the important quantities in the process of sorting oil palm fresh fruit bunches (FFB). Computer vision method is a non-destructive method for measuring volume and mass. This study aims to build a computer vision system to determine the volume of oil palm FFB and to use it in mass. The results of the volume measurement will be compared with manuall measurement the results of …
Oil palm plant is one of the main commodities for Indonesia. Determination of diseases that cause productivity decline is important to identify. Rot disease that causes complete damage to oil palm plants due to fungal infection G. boninense sp has organic volatile compounds that can be detected using an electronic nose.In this Study an electronic nose system has been were designed with 6 se…
The fabrication of supercapacitor based on activated carbon electrodes from rijarija grass biomass has been completed and characterized. The samples were varied in the concentration of ZnCl2 activating agent with concentrations of 0.4 M, 0.5 M, 0.6 M and 0.7 M. The process was started with the pre-carbonization, destruction of carbon samples, particle size uniformity followed by chemical a…
Utilization of potato peel waste as a basic material in the fabrication of supercapacitor electrodes has been successfully carried out.in this study potato peel-based carbon electrodes prepared through a single-stage integrated pyrolysis with carbonization from room temperature to 600°C in a N2 gas atmosphere followed by physical activation at temperature of 850°C in a CO2 gas environmen…
Electronic noses have been developed for decades in many fields. Recently, electronic nose has been used in agriculture to detect the ripeness of fruits because fruits also produce volatile gas during ripening. Oil palm fresh fruit bunches (FFB) is the main source of crude palm oil, its quality depends on the ripeness levels of oil palm FFB. Therefore, electronic detections of oil palm FFB …
FFB (Fresh Fruit Bunches) of oil palm is one of the indonesian commodities that make it possible for Indonesia to be country of the largest CPO (Crude Palm Oil) export in the world. Automatic counting of oil palm FFB is very important in the sorting and grading process to calculate yields, estimate the amount of fruit storage material, and estimate the storage facility. That is very crucial…
Supercapacitors are energy storage devices that have many advantages, including quick charging and an unlimited lifespan. This research aims to determine the potential of snake fruit midrib biomass (PS) as a precursor material for making carbon electrodes for supercapacitor cell application. Carbon electrodes were made from snake fruit midrib biomass using a pre-carbonization process at 200…
Learning media on quantum phenomena material that has been developed by several previous researchers needs to be added again, including using Augmented Reality technology. This study aims to develop a valid, practical, and effective Augmented Reality learning media for quantum phenomena to be used as a medium in high school physics lessons that can increase students' learning motivation an…
The problem in this study is the scientific literacy of Indonesian students requires standardized learning methods, one of which is using learning methods with media demo tools or laboratory equipment. However, the provision of these tools by schools is still lacking. An low cost and geometric optical kit is needed to support student learning outcomes. The purpose of this research is to mak…
The mechanical energy experiment tool in rotational motion that has been developed by several previous researchers needs additional additions, including time calculations using a stopwatch, moving objects not detected by sensors, and calculating mechanical energy at only one altitude point. This study aims to develop a valid and practical experimental device to be used as a media in high school…
The POE based worksheet minimizes the role of a teacher and gives many broadness to the trainees to make discoveries. The goal is to actively seek out knowledge according to his thinking by using sources that can be easy to solve. The main purpose of this research is to develop valid gene-based physics on dynamic materials for the 11th grade in high school. The study conducted a stage of valida…
The purpose of this research was to develop a valid learning media inform of the game “An Intel's Science Missions” based on Borland Delphi 7 on static electricity material for grade IX SMP students. The development of learning media was carried out as a solution to the difficulties of learning science due to abstract science lessons and the lack of interest and motivation of students in sc…
The Covid-19 pandemic has made the implementation of learning unable to take place normally. Learning that is carried out online from home has weaknesses that have an impact on students, namely students find it difficult to understand the subject matter, students' absorption of lessons is low and students' motivation to learn decreases. This study aims to determine the motivation to learn Scien…