Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 861-880 of 11354
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Sintesis dan Uji Performa Elektrokimia Na2Mn3O7 sebagai Bahan Katoda pada Baterai Ion Sodium (SIB) dengan Metode Presipitasi Berbasis Chelating Agent Etilen Glikol
(Universitas Sumatera Utara, 2023)Tests have been carried out on the electrochemical performance of NaxMnyOz as a cathode ion material in sodium ion batteries. This research aims to synthesize NaxMnyOz precursor as a cathode in sodium ion batteries. The ... -
Rancang Bangun Solar Tracker Pengikut Waktu dengan Panel 40WP Berbasis ATMega 328
(Universitas Sumatera Utara, 2023)We have designed a solar tracker system employing a DC motor, RTC (Real-Time Clock), and data logger. This system operates in real-time to record data and uses an ATMega 328 microcontroller as its core. The primary objective ... -
Rancang Bangun Sistem Monitoring Volume dan Debit Aliran Gas Hidrogen Berbasis Internet of Things (IoT)
(Universitas Sumatera Utara, 2023)An Internet of Things (IoT)-based hydrogen gas volume and flow monitoring system has been successfully designed. Hydrogen gas has an important role as one of the renewable energies, so it is necessary to have a security ... -
Alat Pendeteksi Polusi Udara PM2.5 dengan Fitur GPS sebagai Pendeteksi Koordinat melalui Basis Akuisisi Data
(Universitas Sumatera Utara, 2023)Medan city is the fourth largest city in Indonesia with a population in 2022 of 2.494.512 people. Economic growth and the accompanying population growth have led to an increase in the number of vehicles as well as industrial ... -
Pembuatan dan Uji Karakterisasi Papan Komposit Berbasis Serat Kulit Jagung - Serat Eceng Gondok dan Serbuk Gergaji Kayu Menggunakan Resin Epoxy
(Universitas Sumatera Utara, 2023)Composite board has been made with corn husk fiber, water hyacinth fiber and wood sawdust with epoxy resin as an adhesive. The composition of each fiber was varied and physical tests (density, porosity, water absorption ... -
Analisa Pengaruh Variasi Lapisan Papan Komposit Sandwich dari Limbah Sabut Kelapa Muda dan Cangkang Kerang Darah terhadap Sifat Fisik, Mekanik, dan Akustik
(Universitas Sumatera Utara, 2023)This research was conducted to determine the effect of variations in the layers of sandwich composite boards from coconut coir fibre waste and blood clam shells on physical, mechanical, and acoustic properties as one of ... -
Analisa Pengaruh Panjang Gelombang dan Waktu Iradiasi Laser terhadap Pertumbuhan Jamur Curvularia sp pada Tanaman Bibit Kelapa Sawit
(Universitas Sumatera Utara, 2023)This research aims to analyze the influence of wavelength and laser irradiation time on the growth of Curvularia sp. fungus in oil palm seedlings. Curvularia sp. fungus is one of the main causes of diseases in oil palm ... -
Prototipe Sistem Monitoring Arus dan Tegangan Berbasis Internet of Things yang Diaplikasikan pada Catu Daya PLC
(Universitas Sumatera Utara, 2023)The design of current and voltage monitoring system based on IoT application on PLC power supply has been successfully designed by using Voltage sensor, ACS712 Current sensor, Arduino Uno, NodeMCU8266 and Blynk application. ... -
Pembuatan dan Karakterisasi Beton Polimer dari Serbuk Cangkang Telur Bebek dan Serat Buah Pinang dengan Resin Epoksi
(Universitas Sumatera Utara, 2023)This research has been conducted on the manufacture of polymer concrete based on duck eggshell powder and areca nut fiber with epoxy resin adhesive with characterization of physical properties including density test, ... -
Rancang Bangun Sistem Automatic Power Control (APC) untuk Dioda Laser sebagai Sumber Cahaya
(Universitas Sumatera Utara, 2023)The scope of applications in the development of optoelectronic instrumentation, especially laser diodes, is very broad, such as measurement tools, remote control systems, telecommunications systems, medical equipment, ... -
Pengukuran Laju Paparan Radiasi dan Efektivitas Perisai Radiasi pada Ruang CT-Scan di RSUD. Dr. Pirngadi Kota Medan
(Universitas Sumatera Utara, 2023)Research has been carried out on the measurement of radiation exposure rate and effectiveness of radiation shielding in the CT - Scan room using a Babyline Surveymeter. It aims to determine the radiation exposure rate ... -
Pelapisan Magnetit pada Tembaga Menggunakan Electrophoretic Deposition untuk Aplikasi Heat Pipe
(Universitas Sumatera Utara, 2023)In this research, the synthesis of magnetite nanofluid was conducted as a suspension for coating copper using the Electrophoretic deposition method with voltage variations of 15, 20, 25, and 30 volts. The variations included ... -
Perbandingan Energi Terkumpul dari Solar Tracker dan Panel Statis 40 WP Berbasis ATMega328
(Universitas Sumatera Utara, 2023)This experiment aimed to evaluate the energi efficiency of a solar tracking panel compared to a ground-fixed solar panel. A 40 WP solar panel equipped with a time-tracking mechanism was used to monitor the sun's movement ... -
Simulasi Perencanaan Produksi dengan Adanya Ketidakpastian pada Penambahan Bahan Baku Menggunakan Model Fuzzy Multi-Objective Linear Programming
(Universitas Sumatera Utara, 2023)Production planning is a complex planning process carried out by companies to ensure that the production of goods or services can run efficiently and effectively. This research considers two objective functions and ... -
Analisis Pengaruh Penggunaan Tiktok terhadap Perilaku Belajar Mahasiswa Menggunakan Structural Equation Modeling (SEM) Berdasarkan Metode Theory of Reasoned Action (TRA)
(Universitas Sumatera Utara, 2023)The advancement of science and technology has influenced the development of communication and information. Social media is one of the proofs of scientific and technological progress. Social media enables everyone to ... -
Efektivitas Nanokomposit ZnO/N-Doped Carbon Nanodots sebagai Fotodegradasi Rhodamin B di Bawah Radiasi Sinar UV
(Universitas Sumatera Utara, 2023)The textile industry in Indonesia is experiencing very rapid development. One of the liquid wastes that are usually produced by the textile industry is Rhodamin B. Therefore, a method is needed to degrade Rhodamin B (RhB), ... -
Karakterisasi Morfologi dari Modifikasi Aspal-Plastik dengan Limbah Polistirena (PS) yang Ter Grafting dengan Maleat Anhidrat dan Dikumil Peroksida
(Universitas Sumatera Utara, 2023)This research examines the modification of polymer asphalt with polystyrene (PS) waste which is carried out in two stages. The first stage is the synthesis of PS through two methods, where the first method is dissolving ... -
Efektivitas Nanokomposit ZnO/N-Doped Carbon Nanodots sebagai Material Fotokatalis dalam Degradasi Metilen Biru di Bawah Radiasi Sinar UV
(Universitas Sumatera Utara, 2023)The growth of the textile industry in Indonesia continues to increase every year, which is accompanied by the use of synthetic dyes such as Methylene Blue and accompanied by the disposal of waste directly into water bodies. ... -
Rancang Bangun Sistem Counter Pengunjung Berdasarkan Kapasitas Ruangan Menggunakan Sensor Infrared, Sensor Suhu, dan Servo Motor Berbasis Mikrokontroler Wemos D1R1
(Universitas Sumatera Utara, 2023)Post-public outbreaks are still limited and regulated by several health protocols to avoid the rapid and wide spread of the virus. One of the protocols is to limit crowds or density, especially in closed spaces. Based on ... -
Analisis Metode Hungarian pada Optimalisasi Assignment Problem
(Universitas Sumatera Utara, 2023)In the industrial world, accuracy in mapping employees to complete a particular job is very necessary. So that, a method of solving assignment problems is needed to obtain optimal results by mapping one job to one worker ...