This study aimed to use multigamma irradiation techniques (nuclear) to improve indigenous purple corn to produce better generation types that can withstand drought, harsh climates, pests and diseases, and high yields. Observation, sampling, irradiation, careful selection, purification, and interpretation...

Lake Toba is the largest volcanic lake in Southeast Asia that has a multi-sectoral role, both for the benefit of local communities and for national and even international interests. Lake Toba as a tourist destination where in 2020 the Toba Regency Central Statistics Agency recorded the number of passenger...

This study investigates the influence of Cobalt in magnetorheological elastomer (Co-MRE) on which the magnetic effect could be applied in soft optical electronics such as wearable and flexible sensors. Polydimethylsiloxane (PDMS) was used as a medium, and Co was used as a filler to construct isotropic...

WMO states that temperature is an important parameter in life and defines temperature as a physical quantity that characterizes the average random motion of molecules in a physical body. The accuracy of temperature measurement on a thermometer is influenced by the selection of the right and accurate...

Silat village is a village upstream of the Kapuas River, which is the longest river in Indonesia. One of the tributaries of the Kapuas River is the Silat River. The history of population distribution on the island of Kalimantan, especially West Kalimantan is through water transportation, this condition...

Practical activities can help teachers deliver material because students are directly involved and observing. In addition, practical activities also help students understand concepts. This research aims to make teaching aids to understand the concept of light propagation on fibre optic cables in schools....

This research was conducted in the Seropan underground river in the Gunung Sewu karst, Gunung Kidul Regency. This study aimed to identify some of the flood hydrograph properties of the Seropan underground river to characterize the karst aquifer. A water level data logger is installed to detect underground...

The increase in energy demand and reduced energy reserve, other alternative energy sources that are more environmentally friendly are needed, one of which is solar cells. Among several types of solar cells, Dye Sensitized Solar Cell is a type of solar cell that can produce electricity more efficiently....

DSSC is a permanent alternative energy device in the form of environmentally friendly photoelectrochemical as a renewable energy source. So, the Efficiency of DSSC is still varied and relatively low. Therefore, in this study, a study was conducted on the effect of the composition of rGO/TiO2 as a photoanode...

That publicity to extremely Low Frequency (ELF) magnetic fields can save and suppress the increase and proliferation of pathogenic microorganisms, which have a vital role in the process of meal spoilage. This has a look at pursuits to have a look at the “Resilience of broiler meat thru exposure to extremely...

Although art scholars are primarily concerned with instruction, one of literature’s fundamental purposes, it may also be appropriate for non-art scholars, such as geological scientists. Geology lessons can be taught using literature, such as cave exploration. An alternate strategy for bringing people...

Applying a favorite semi-efficient method, the influences of a typical silane coupling agent, named aminopropyltriethoxy Silane (APTES), on morphology, hardness, and tensile strength behaviors of the natural rubber/silica composite were examined. As a natural-based rubber, the natural rubber (NR) was...

In the application of a semi-efficient method for the rubber compounding and vulcanization, the study on the effects of oleamide addition, as a rubber additive, on the strength and reinforcement behaviors of styrene butadiene rubber (SBR)-silica compound was carried out. The oleamide was synthesized...

Photosupercapacitor (PSC) is integrated harvesting (DSSC) and storing energy (supercapacitor) simultaneously. The increase in DSSC performance is studied through an effect of TiO2 film immersion duration on the N719 dye, which has not been investigated so far. Furthermore, the effect of stacking configuration...

Supercapacitors are gaining much attention as electrochemical energy storage for their fast charging rates, high power density, good cycle performance, quicker charge-discharge, longer device life, and abundant materials. According to the storage mechanism, supercapacitors are divided into 3 types; EDLC...

A calorimeter is an instrument used to measure the amount of heat transferred to or from an object. The calorimeter used in schools is analog. The data obtained is less accurate, and students have difficulty interpreting the data. This research aims to create a simple digital calorimeter practicum tool...

This present research develops an android-based learning design to increase interest in learning music. Technology that has penetrated education can be used as an alternative to achieve learning goals. Music, as one of the lessons taught in school, can help students to increase their creativity. However,...

Endog-endogan and engklek are traditional games used in Sundanese ethnomathematics learning. This game has many mathematics and physics ideas for elementary school teacher education students to explore and apply in lectures and science. This research goal is to discover the ideas of mathematics and students’...

The purpose of this study is to create a conceptual framework for the ethno-inquiry learning model and determine its validity in supporting pre-service science teachers’ critical thinking ability. The conceptual framework is constructed on an in-depth study of theoretical and empirical studies, information...

This study aims to develop physics learning tools of an inquiry-creative-process (ICP) model integrated with ethnoscience and to find its validity in training prospective teachers’ critical thinking skills. This study’s learning tools developed and tested for validity comprise lesson plans (RPS) and...

The conceptual change model by Posner et al. states that students must be dissatisfied with the old conceptions, and the substitute conceptions must be intelligent, plausible, and fruitful to ensure the conceptual change. The previous study has obtained students’ misconceptions about the Lunar Phase...

Digital teaching resources are an alternative to traditional textbooks in the “digitalization 4.0” era. The student worksheet is one of the digital instructional resources that can be generated. Along with using digital teaching tools, the selection and implementation of learning models are equally important...

This report describes the Skills literacy environment of student candidate teacher chemical in Faculty MIPA at University Hamzanwadi. Skills consist of competence environment, knowledge environment, and attitude to the environment. Data were collected by surveying semester 4 and 6 students. From the...

Digital technology cannot be separated from education as it can support teaching and learning activities. Therefore, pre-service teachers must have digital literacy. This study aimed to determine and analyze the digital literacy of undergraduates involved in the program MBKM as teaching assistants at...

Information and communication technology (ICT) is very important in 21st-century education because it can improve students’ understanding. The purpose of this study was to describe the perception of chemistry teachers at SMA Negeri Pontianak about the use of ICT in learning. The research method used...

Kaolin is a clay mineral composed of silica tetrahedral and octahedral alumina layers, which have high absorption capacity and are abundant in nature. This study aims at determining the optimum temperature of kaolin calcination and the effect of variations in pH, stirring time, kaolin mass, and stirring...

Applying the concept of colligative properties of solutions is closely related to everyday life and science development, so the REACT strategy can be applied in learning. This research aims to develop a valid flipbook for learning the colligative properties of solutions that relate the concepts and their...

Dihydroxy stearate acid (DHSA) is a compound used as an emulsifier and additive in cosmetic formulations. This study aims to separate the unsaturated fatty acids of nyamplung oil, synthesis DHSA, Characterization of unsaturated fatty acids and DHSA compounds. The separation of unsaturated fatty acids...

Polyols are intermediate compounds used as raw materials to produce highly valuable industrial materials. Generally, the raw materials for synthesizing polyols are petroleum-based, non-biodegradable fossil fuels. In this study, the raw material used is oil from Ricinus communis L. (Local name: jarak...

Learning has been carried out flexibly, meaning that if the Covid-19 condition increases, the learning will be carried out online. If the Covid-19 conditions decrease, the learning will be carried out offline again. This study aims to determine the differences in conceptual understanding of students...