Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 761-780 of 11355
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Analisis Perbandingan Metode Response Surface Methodology (RSM) dan Metode Taguchi: Optimasi Kinerja Pompa Hidram
(Universitas Sumatera Utara, 2024)Water technology plays a crucial role in fulfilling the need for clean water access and efficient water management, especially in rural areas. As an alternative to water technology that requires sustainable electrical ... -
Perbandingan Algoritma Dijkstra dan A* Dalam Penentuan Jalur Light Rail Transit di Kota Medan
(Universitas Sumatera Utara, 2024)The significant economic growth and population increase in the city of Medan have led to a rise in mobility demand, thereby triggering traffic congestion issues. A solution to this problem lies in the development of a ... -
Implementasi Fuzzy Logic Controller System Metode Mamdani dan Sugeno dalam Peningkatan Efisiensi dan Kinerja Pencucian pada Smart Washing Machine
(Universitas Sumatera Utara, 2024)Washing clothes is one of the important processes in daily life. Although automatic washing machines have provided convenience in carrying out the washing process, the use of the latest technology such as fuzzy logic ... -
Analisis Faktor-Faktor yang Mempengaruhi Tingkat Kemiskinan di Sumatera Utara Menggunakan Structural Equation Modeling
(Universitas Sumatera Utara, 2024)Poverty is a fundamental problem that is the center of attention of the government in any country. The aim of this research is to analyze the influence of education, unemployment, the Covid-19 pandemic and the human ... -
Perbandingan Kinerja Metode Arima dan LSTM Berbasis Machine Learning dalam Meramalkan Cuaca di Pulau Sumatera
(Universitas Sumatera Utara, 2024)Weather forecasting is a major component in life that affects various sectors ranging from agriculture to aviation. The research aims to provide information regarding a good method in forecasting weather, especially on the ... -
Modifikasi Pati Sukun (Artocarpus Altilis) melalui Reaksi Esterifikasi dengan Asam Palmitat dalam Media Larutan Naoh/Urea
(Universitas Sumatera Utara, 2024)Palmitic starch was obtained from breadfruit starch (Artocarpus altilis) modified through esterification reaction using palmitic acid in NaOH/Urea solution media. This research was conducted in two stages, namely, isolation ... -
Analisis Kandungan Logam dan Mineral pada Road Deposited Sediment (RDS) dari Mobil Road Sweeper Berdasarkan Perbedaan Ukuran Partikel
(Universitas Sumatera Utara, 2024)A study was conducted to identify the metal and mineral content of Road Deposited Sediment (RDS) from street sweepers based on differences in particle size. RDS is a combination of natural sediments including soil ... -
Konversi Pelepah Sawit dan Plastik HDPE menjadi Bio-Oil melalui Proses Co-Pirolisis Menggunakan Katalis Zeolit Mordenit Diimpregnasi Logam Co dan Fe
(Universitas Sumatera Utara, 2024)Bio-oil derived from the thermal decomposition of waste biomass from oil palm fronds has the potential to be utilized as an alternative energy raw material source. However, its physical and chemical properties have ... -
Sintesis Metil Oleat dari Asam Oleat dengan Metanol pada Variasi Waktu dan Berat Katalis Abu Kulit Durian Menggunakan Radiasi Microwave
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate from esterification oleic acid with methanol using calcined durian peel ash as catalyst under microwave irradiation. Durian powder was calcinated at 600 ˚C for 4 hours. The main component of ... -
Sintesis Kardanil Metil Eter melalui Eterifikasi Kardanol dari Kulit Biji Jambu Mete (Anacardium Occidentale L.) pada Variasi Jumlah Katalis Tetrabutilamonium Bromida
(Universitas Sumatera Utara, 2024)Synthesis of cardanyl methyl ether was carried out through an etherification reaction between cardanol isolated from Cashew Nut Shell Liquid (CNSL) and dimethyl carbonate. Cardanol isolation was carried out by adding ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Nam-Nam (Cynometra Caulifora L.)
(Universitas Sumatera Utara, 2024)Isolation of flavonoid compound from stem bark of nam-nam (Cynometra caulifora L.) had been carried out through the extracted maceration with methanol solvent, then re-extracted with ethyl acetate, partitioned extracted ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Biji Palem Palas Payung (Licuala Grandis (T.Moore) H.Wedl.)
(Universitas Sumatera Utara, 2024)Palas payung palm (Licuala grandis (T.Moore) H.Wedl.) is a plant of the palm family (Arecaceae) that has long been used by the community to treat diarrhea, worms, boils, and as a natural dye. Isolation and identification ... -
Efektivitas dan Formulasi Kitosan Oligosakarida pada Sediaan Shampo Anti Rontok dengan Aktivitas Antimikroba Candida Albicans
(Universitas Sumatera Utara, 2024)Chitosan has many functions that are developed in various fields and products. One of the interesting functional properties of chitosan is as an antimicrobial by the interaction between chitosan and the outer cell membrane ... -
Sintesis Kardanil Metil Eter melalui Reaksi Eterifikasi Kardanol Hasil Isolasi Kulit Biji Jambu Mete (Anacardium occidentale L.) dengan Variasi Molar Dimetil Karbonat
(Universitas Sumatera Utara, 2024)Synthesis of cardanyl methyl ether was carried out through an etherification reaction between cardanol isolated from cashew seed shell extract (CNSL) and dimethyl carbonate.Cardanol isolation was carried out by adding ... -
Formulasi Sediaan Hair Tonic Kitosan Oligosakarida dengan Karboksimetil Kitosan sebagai Antijamur terhadap Penyebab Ketombe (Malassezia Globosa)
(Universitas Sumatera Utara, 2024)Research has been conducted on the use of oligosaccharide chitosan and carboxymethyl chitosan in the formulation of hair tonic preparations as antifungal against the cause of dandruff (Malassezia globosa). Hair tonic is ... -
Formulasi dan Karakterisasi Sediaan Body Scrub Karboksimetil Kitosan sebagai Antibakteri
(Universitas Sumatera Utara, 2024)Chitosan has a well-developed function in a variety of fields and products. One of the interesting functional properties of the chitosan to develop is its properties as antibacterial that can remove dead skin cells and ... -
Pembuatan 2-Etilheksil Miristat dari Esterifikasi 2-Etilheksil Alkohol dan Asam Miristat pada Perbandingan Waktu Reaksi dan Daya Mikrowave Menggunakan Katalis Enzim Lipase
(Universitas Sumatera Utara, 2024)The production of 2-Ethylhexyl Miristat from myristic acid and 2-Ethylhexyl alcohol has been performed through esterification reaction using lipase enzyme as catalyst and microwave radiation. The parameters studied in ... -
Pengukuran Jarak pada Rancangan Indirect Time Of Flight (i-ToF) Light Detection and Ranging dengan Sistem Optik Biaksial untuk Kendaraan Otomatis
(Universitas Sumatera Utara, 2024)In the development of new technologies, Light Detection and Ranging (LiDAR) is one that can detect, measure and identify distant object. One application of LiDAR is automated vechiles, which can solve transportation ... -
Sistem Monitoring Kematangan Kompos dengan Serasah Daun Mangrove (Rhizophora sp.) pada Komposter Berpengaduk Otomatis Berbasis Sensor Load Cell Terintegrasi Internet Of Things
(Universitas Sumatera Utara, 2024)This system is designed to monitor the stability of compost media maturity parameters. Users can use the composter machine more effectively and efficiently with the use of a sensor system for compost maturity parameters ... -
Alat Pengontrolan Konsentrasi TDS Air Otomatis Menggunakan Automatic Sensor Lifter pada Budidaya Ikan Air Tawar Terintegrasi Internet of Things (IoT)
(Universitas Sumatera Utara, 2024)The quality of water, particularly the TDS (Total Dissolved Solid) parameter, is an important factor in freshwater fish farming. High concentrations of TDS can be fatal to fish. In order to overcome the problem, this ...