Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 61-80 of 11443
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Potensi Jamur Endofit Penghasil Enzim Lakase dari Daun Kelapa Sawit (Elaeis guineensis Jacq.)
(Universitas Sumatera Utara, 2025)Oil palm leaves as habitat for various endophytic fungi that have the potential to produce hydrolytic enzymes, including lignin-degrading laccase enzymes. This study aimed to determine the potential of endophytic fungi ... -
Aplikasi Load Cell 200 Kg Untuk Sistem Kontrol Pengisian Air Otomatis Pada Depot Air Galon Isi Ulang Dengan Mikrokontroler Atmega328
(Universitas Sumatera Utara, 2025)This study presents the design and evaluation of an automatic water-filling control system specifically developed for refill-water depots in Indonesia. The system addresses the persistent issue of volume inconsistency that ... -
Sistem Pengontrolan Peralatan Listrik Pada Pemberian Pakan Ayam Berbasis Iot (Internet Of Things) Menggunakan Nodemcu Esp8266
(Universitas Sumatera Utara, 2025)The demand for efficiency and accuracy in poultry farm management necessitates the implementation of automation-based technologies. This research focuses on the design and implementation of an Internet of Things (IoT)-based ... -
Korelasi Indeks Shannon-Wiener Tumbuhan Pakan dengan Encounter Rate Burung Merbah Cerucuk (Pycnonotus goiavier) di Area Kampus Universitas Sumatera Utara
(Universitas Sumatera Utara, 2025)The Yellow-vented Bulbul (Pycnonotus goiavier) is a bird that feed fruit (frugivorous) and nectar (nectarivorous). The presence of the bird depends on the availability of the plants in its habitat. The diversity of ... -
Sistem Pengukuran dan Monitoring Pemakaian daya Listrik Peralatan rumah tangga Menggunakan Microkontroler ESP8266 Berbasis IoT (Internet of Things)
(Universitas Sumatera Utara, 2025)Real-time monitoring of electrical energy consumption is a crucial step in promoting energy efficiency in household environments. This study aims to design and develop a system for measuring and monitoring the power usage ... -
Perancangan Sistem Catu Daya Bertegangan Rendah Arus Besar Menggunakan MOT (Microwave Oven Transformers) pada Aplikasi Spot Welding
(Universitas Sumatera Utara, 2025)This study aims to design and develop a high-current, low-voltage power supply system using a modified Microwave Oven Transformer (MOT) for spot welding applications. The system was designed by modifying the secondary ... -
Karakteristik Elektroda Termodifikasi Kitosan/GQDs/MnO2 dalam Mengukur Kolesterol dengan Metode Voltametri Siklik
(Universitas Sumatera Utara, 2025)Chitosan/graphene quantum dots (GQDs)/manganese dioxide (MnO₂) modified electrode was successfully employed for cholesterol measurement using the cyclic voltammetry method. The incorporation of MnO₂ was proven to enhance ... -
Simulasi Optimasi Daya pada Panel Surya dengan Maksimum Power Point Tracking (MPPT) Menggunakan Algoritma Perturb and Observe dengan Matlab Simulink
(Universitas Sumatera Utara, 2025)This project focuses on the design, implementation, and performance evaluation of a solar power system equipped with a Maximum Power Point Tracking (MPPT) controller based on the Perturb and Observe (P&O) algorithm. A boost ... -
Sensitivitas dan Limit Deteksi Elektroda Termodifikasi Kitosan/GQDs/Fe3O4 dalam Mengukur Konsentrasi Kolesterol Menggunakan Metode Voltametri Siklik
(Universitas Sumatera Utara, 2025)In this research, the chitosan/GQDs/Fe3O4 modified electrode has been successfully carried out in measuring cholesterol using the cyclic voltammetry method. The chitosan/GQDs/Fe3O4 modified electrode was fabricated ... -
Algoritma Genetika Hibrid pada Permasalahan Optimasi Portofolio Dinamis
(Universitas Sumatera Utara, 2025)Dynamic portfolio optimization is a crucial problem in evolving financial markets, requiring investment decisions to be adjusted over time. Traditional methods such as Linear Programming (LP) and Quadratic Programming ... -
Prediksi Kebutuhan Energi Listrik Kota Medan Menggunakan Metode Jaringan Syaraf Tiruan Model Algoritma Backpropogation
(Universitas Sumatera Utara, 2025)This study aimed to predict the electrical energy demand at PT PLN (Persero) UP3 Medan for the next two years using the Artificial Neural Network (ANN) with the Backpropagation model. The purpose was to assist the company ... -
Perpindahan panas pada Fluida Non-Newton
(Universitas Sumatera Utara, 2021)Non-Newtonian fluids exhibit behaviour deviating from Newton’s law. In Sisko fluid flow, which is a non-Newtonian fluid, within pipes, the relationship between shear stress magnitude and shear strain becomes linear as ... -
Teori Permainan Fuzzy dalam Menentukan Strategi Pemasaran Optimum pada Shopee, Lazada dan Tokopedia
(Universitas Sumatera Utara, 2025)The rapid advancement of the times has resulted in every human activity being inseparable from technology. Various new technologies are emerging in every field of life. One of the rapidly developing technologies is electronic ... -
Variasi Komposisi Serat Pelepah Aren (Arena pinnata) dan Serbuk Kayu Mahoni (Swietenia macrophylla) sebagai Papan Komposit dengan Perekat Polyester
(Universitas Sumatera Utara, 2025)A study was conducted on the variation of sugar palm frond fibers (Arenga pinnata) and mahogany wood powder (Swietenia macrophylla) as composite boards using polyester, adhesive with dimensions of 7,5cm × ... -
Rancangan Charging Station untuk Laptop Berbasis Tenaga Surya dengan Monitoring Tegangan, Arus, dan Daya
(2025)This research aimed to design and develop a solar-powered laptop charging station equipped with a real-time voltage, current, and power monitoring system. The system used solar panels as the main energy source, with the ... -
Sistem Pemantauan Getaran Bebas pada Bilah Turbin Angin Menggunakan Sensor Akselerometer Mikro-Elektro-Mechanical Systems Berbasis Internet of Things
(Universitas Sumatera Utara, 2025)Vibration monitoring of wind turbine blades is critical for detecting structural damage that affects system performance and stability. This study developed a real-time vibration monitoring system using an ADXL345 MEMS ... -
Keanekaragaman Jenis Burung Air dan Analisis Jenis Makrozoobentos sebagai Sumber Makanan Burung di Kawasan Ekowisata Mangrove Sicanang, Belawan
(Universitas Sumatera Utara, 2025)Sicanang Mangrove Ecotourism is a habitat for waterbird so the area is designated as an important bird area (IBA). Conditions in the Sicanang Mangrove Ecotourism Area have experienced many anthropogenic disturbances due ... -
Integrasi Anemometer dan Kincir Angin 300 Watt dalam Sistem IOT untuk Pemantauan Real-Time Melalui Telegram Berbasis Esp8266
(Universitas Sumatera Utara, 2025-09-19)Optimizing the potential and realizing the utilization of wind energy, such as in the coastal areas of Lake Toba, particularly in Silalahi III Village, requires further adjustments to the use of turbine models, monitoring, ... -
Perancangan Sistem Monitoring Arus, Tegangan, dan Waktu Pengisian Superkapasitor Berbasis Mikrokontroler untuk Spot Welder Portable
(2025)This research focused on the development of a microcontroller-based monitoring system for charging and discharging supercapacitors in portable spot welder applications. The system was designed using an Arduino Nano as the ... -
Home Security Control Menggunakan Sensor PIR, ESP32-Cam dan Lampu Blitz Berbasis Internet of Things
(Universitas Sumatera Utara, 2025)Home security systems are an essential technology to prevent criminal acts such as burglary while providing protection for residents and property. This research designed and implemented a home security control system based ...