Biomass-based carbon materials are important in the development of sustainable technologies, due to their abundant availability, environmental friendliness, low cost, and high specific surface area. Carbon materials doped with heteroatoms can improve the performance of supercapacitor cells by changing the surface properties of carbon electrodes such as conductivity and apparent capacity. The do…
This research aims to analyze peat soil electrical conductivity and impedance values using the four point probe method. Peat soil samples were taken from locations with a depth of 20 cm from the surface. Electrical conductivity measurements were performed using the four point probe method with brass wire with a length of 5 cm as electrodes. The results showed that the electrical conductivity o…
The quality of Crude Palm Oil (CPO) can be determined through the assessment of beta-carotene content in Fresh Fruit Bunches (FFB) of oil palm. This study aims to utilize an LED-based multispectral imaging system to predict the beta-carotene content in FFB. The imaging system employs eight LED wavelengths (680 nm, 700 nm, 750 nm, 780 nm, 810 nm, 850 nm, 880 nm, and 900 nm) as light sources. A P…
This study aims to fabricate Dye-Sensitized Solar Cells (DSSC) based on ZnO nanorods by enhancing their efficiency through titanium (Ti) doping in the active ZnO material. It also investigates the effect of varying the growth time of ZnO nanorods on DSSC efficiency. Ti-doped ZnO nanorods were successfully synthesized using a seed-mediated hydrothermal method with variations in growth time. The …
The identification of full and empty palm fruit bunches after threshing plays an important role in improving the oil extraction rate (OER) in palm oil mills. Undetected filled palm fruit bunches after threshing can reduce extraction efficiency and lead to oil loss cases. Manual assessment is often slow and inaccurate, so a faster and more effective technology is needed. This study uses computer…
The fabrication of a supercapacitor cell from hierarchically porous activated carbon and nanofibers derived from acacia leaves (DA-Acacia Mangium Willd) has been successfully accomplished. The electrode fabrication process for the supercapacitor cell was conducted using a simple, efficient, and environmentally friendly method. The preparation of activated carbon involved steps such as preparing…
Pendidikan memiliki peran penting bagi kemajuan sebuah bangsa dan negara. Pada abad 21 ini banyak sekali negara di dunia berlomba-lomba untuk terus meningkatkan kualitas dunia pendidikannya. Hal ini dilakukan dengan tujuan untuk mempunyai sumber daya manusia yang berkualitas tinggi dan memiliki daya saing yang tinggi. Salah satu cara untuk meningkatkan kualitas sumber daya manusia pada sebuah n…
The development of science and technology in the 21st century is very rapid, where technology is widespread in various aspects of life, especially in the world of education. To keep up with the development of science and technology, students must be able to understand technological developments and use them wisely. Based on PISA 2018 data, it can be seen that the scientific literacy skills of I…
21st century skills are abilities that every student must have, consisting of 4 competencies which include creativity, critical thinking, communication and collaboration or often called 4C skills. 21st century skills in terms of problem solving abilities are one of the focuses of physics learning. However, the quality of students' problem solving abilities is still relatively low. Students' fai…
Dalam pembelajaran fisika, siswa diharapkan mampu memahami konsep fisika secara menyeluruh, mampu membuktikan konsep fisika yang dipelajari, hingga mampu mengaitkan dalam fenomena yang ditemui dalam kehidupan sehari-hari. Permasalahan pendidikan di Indonesia adalah kurangnya proses pembelajaran yang melibatkan siswa aktif belajar. Berdasarkan hasil wawancara, penulis menyoroti bahwa pendidik se…
Zinc oxide (ZnO) semiconductor is a material with a band gap energy of 3.37 eV that can be used as a photocatalyst to degrade pollutants in water. The weakness of this material is the relatively wide band gap energy, which limits the light response to photocatalytic activity. Efforts to increase its photocatalytic efficiency are carried out by adding impurities to ZnO. Single element doping has…
Thin films of (0.9)BaTiO3-(0.1)BaZr0.5Ti0.5O3 (BT-BZT) is ferroelectric materials developed to meet the specifications for multilayer ceramic capacitors (MLCC). This study aims to analyze the optical properties, crystal structure, morphological structure, and dielectric properties of BT-BZT using Ultraviolet-Visible (UV-Vis) spectroscopy, X-Ray Diffraction (XRD), Field Emission Scanning Electro…
Iron sand possesses unique magnetic properties, making it a promising material for various technological applications. This research aims to analyze the magnetic, optical, and compositional properties of iron oxide particles derived from Sunur-Pariaman beach sand, which were doped with cobalt. The material preparation process involved the ball milling method conducted in three stages, totaling …
This research was conducted to determine the purity of forest honey against the mixing of high fructose corn syrup (HFCS) and apple cider vinegar (ACV) based on concentration variations of..........
Tilapia is one type of freshwater fish that is widely cultivated in Indonesia. Fish is usually a food ingredient that is very easily damaged in freshness and its quality decreases rapidly after death........
Supercapacitors are energy storage devices that combine the advantages of high power density, fast response time, and long cycle life. This devices is of great interest for sustainable energy applications, ranging from electric vehicles to power balancing in renewable energy. Electrode materials are a key element in supercapacitor performance, with porous carbon being the primary choice due to …
Pendidikan merupakan salah satu kunci keberhasilan dalam membangun bangsa menjadi lebih maju. Berkembangnya pendidikan sudah pasti berpengaruh terhadap perkembangan ilmu pengetahuan dan teknologi yang erat kaitannya dengan pelajaran IPA. Pembelajaran IPA tidak hanya mengajarkan siswa tentang rumus saja melainkan siswa dapat memahami konsep dari materi yang diajarkan. Namun, guru mengalami kesul…
Kunci kesuksesan suatu negara sangat dipengaruhi oleh sumber daya manusia (SDM). Dengan terdapat sumber daya manusia yang bermutu serta berkualitas, maka tujuan pada proses bernegara bisa tercapai. Di zaman sekarang, permasalahan umum dalam IPA adalah beberapa siswa beranggapan bahwa IPA adalah pelajaran yang sangat sulit dan membosankan. Kurangnya gambaran dan sulitnya penerapan model pembelaj…
Salah satu tujuan dalam pendidikan yang paling penting adalah mengajarkan peserta didik tentang hakikat ilmu sains bagaimana untuk terlibat dalam penyelidikan selanjutnya. Hasil dari penyelidikan tersebut menghasilkan produk, produk menghasilkan fakta, konsep, prinsip, teori, dan hukum. Fisika adalah bidang ilmu yang menyelidiki hubungan antara fenomena alam. Mencari tahu adalah cara untuk mem…
Pembelajaran ilmu pengetahuan alam merupakan salah satu mata pelajaran yang termasuk dalam program pendidikan sekolah menengah pertama. Mata pelajaran IPA memuat tiga mata pelajaran diantaranya biologi, fisika dan kimia. Dalam model pembelajaran terdapat metode pembelajaran yang berarti cara yang digunakan dalam mengimplementasikan rencana yang sudah disusun dalam kegiatan proses belajar mengaj…