Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 941-960 of 11354
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Pembuatan Isopropil Miristat dari Esterifikasi Isopropil Alkohol dan Asam Miristat pada Perbandingan Waktu Reaksi dan Daya Mikrowave Menggunakan Enzim Lipase
(Universitas Sumatera Utara, 2023)The preparation of isopropyl myristate (IPM) has been performed through an esterification reaction of myristic acid and isopropyl alcohol using the lipase enzyme as a catalyst under microwave irradiation. The parameters ... -
Analisis Kadar Logam Besi dan Mangan dalam Road Dust Resuspension (RDS) dan Pola Persebaran Menggunakan Metode Distribusi Gaussian
(Universitas Sumatera Utara, 2023)Transportation is one of the important sectors in fulfilling human activities. However, the transportation sector sometimes poses a problem, namely air pollution by dust particulates derived from vehicle emissions. This ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik dari Buah Tumbuhan Tanjung (Mimusops Elengi L.)
(Universitas Sumatera Utara, 2023)Isolation and ident(fication of phenolic compounds have been carried out from the fruit of the tanjung plant (Mimusops elengi L.) through the maceration extraction stage with methanol solvent. The concentrated methanol ... -
Karakteristik Adesif Berbasis Karet Alam (Sir 10)/Karet Stiren Butadiena dengan Pengisi Mikrobentonit dan Benzoil Peroksida sebagai Inisiator Pengikat Silang
(Universitas Sumatera Utara, 2023)Natural Rubber (SIR 10) adhesive material/Styrene Butadiene Rubber with the addition of microbentonite fillers and benzoyl peroxide has been carried out. Benzoyl peroxide was used to crosslinking initiator of Natural ... -
Sintesis Metil Ester Asam Lemak dari Minyak Kelapa Sawit pada Variasi Rasio Molar dan Berat Katalis Abu Kulit Durian Menggunakan Pendispersi Homogen
(Universitas Sumatera Utara, 2023)The synthesis of fatty acid methyl esters from palm oil has been performed through a transesterification reaction using durian peel ash as a heterogeneous catalyst. This research was conducted to determine the maximum ... -
Pembuatan dan Karakterisasi Sampel Beton Polimer Berbahan Dasar Serat Pelepah Kelapa Sawit (Elaeis) dan Serbuk Kayu dengan Perekat Resin Epoxy
(Universitas Sumatera Utara, 2023)The research has been done on manufacturing of polymer concrete which has made from sand, sawdust, waste of palm frond fiber(elaeis) and epoxy resin. Manufacture of sample was made by sieving sand and sawdust using a 100 ... -
Analisis Kualitas Pelayanan Kesehatan Pasien Rawat Jalan di Rsu Royal Prima Medan dengan Menggunakan Metode Importance Performance Analysis (IPA)
(Universitas Sumatera Utara, 2023)The Importance Performance Analysis (IPA) method is the method used in this research to measure the relationship between consumer perceptions and priorities for improving product/service quality, known as the analysis ... -
Analisis Konsentrasi Logam Besi, Zink, Tembaga dalam Road Dust Suspension-Resuspension dan Pola Persebaranny A Menggunakan Metode Gaussian Line Source
(Universitas Sumatera Utara, 2023)This study aims to analyze metal concentration in road dust suspension resuspension and Gaussian method to predict the distribution and concentration of dust on Jalan Sisingamangaraja, Medan City. Metal ... -
Karakterisasi Mutu Susu Probiotik Kefir K01\1binasi Susu Kambing dan susu Aimond dengan Pena1\1bahan Ekstrak Bonggol Nanas
(2023)Ke.fir is fermented milk that contains probiotic bacteria. The preparation is added with kefir grain starter as a source of lactic acid bacteria. The combination of goat's milk and almond milk with the addition of pineapple ... -
Analisis Model Antrian dan Penerapannya dalam Optimisasi Pelayanan Pasien BPJS Centre Murni Teguh Memorial Hospital
(Universitas Sumatera Utara, 2023)Queueing is a common daily phenomenon, as happened in the registration counter of BPJS Centre Murni Teguh Memorial Hospital. The queue is quiet long, especially at 08.00 – 11.00 WIB. In service operations, the queue length ... -
Aplikasi Metode Double Exponential Smoothing Brown (Studi Kasus: Taman Hewan Pematangsiantar)
(Universitas Sumatera Utara, 2023)Forecasting is an important part in a decision-making process. This activity is an activity in estimating and predicting an event in the future for a long period of time. This research will discuss visitor forecasting at ... -
Studi Pembuatan Bahan Bakar Gasohol E-85
(Universitas Sumatera Utara, 2023)This research has beendone by adding Calcium Oxide (CaO) as an azeotropic point breaker of ethanol-water. The Calcium Oxide used was analyzed with SEM-EDX which showed that the constituent atoms of Calcium Oxide consisted ... -
Sintesis Isopropil Miristat dari Isopropil Alkohol dan Asam Miristat pada Perbandingan Rasio Molar dan Berat Enzim Lipase Menggunakan Radiasi Mikrowave
(Universitas Sumatera Utara, 2023)The production of isopropyl myristate through the esterification reaction of myristic acid with, isopropyl alcohol has been carried oi t using the lipase en.zyme as a biocatalyst with microwave radiation. The JJarameters ... -
Implementasi Metode Continuous Review dalam Mengoptimalkan Biaya Persediaan Bahan Baku (Studi Literatur Review)
(2023)Raw material inventory is an important factor in the company, so that the supply of raw materials must be sufficient to be able to guarantee the need for smooth production activities. To organize optimal inventory, an ... -
Pengukuran Medan Listrik di Bawah Saluran Transmisi 150 KV dan Perhitungan dengan Menggunakan Metode Bayangan Kompleks
(Universitas Sumatera Utara, 2023)High voltage and current flowing in the transmission line can cause an electric field. The calculation of electric field strength in high voltage airways will certainly be difficult if done manually, therefore calculating ... -
Karakterisasi Hidrolisat Protein Kacang Merah (Phaseolus Vulgaris L.) dan Kacang Hijau (Vigna Radiata) secara Enzimatis Menggunakan Enzim Bromelain
(Universitas Sumatera Utara, 2023)Red beans (Phaseolus vulgaris L.) and ,nung beans (Vigna radiata) are vegetable protein sources that generally have co,nplex con1pounds that are difficult to ,netabolize. The production of red bean and ,nung bean is still ... -
Penerapan Algoritma Ant Colony Optimization dalam Penyelesaian Capacitated Vehicle Routing Problem untuk Distribusi PT. Amerta Indah Otsuka Medan
(Universitas Sumatera Utara, 2023)Vehicle Routing Problem (VRP) is one of the problems found in Operational Research. The applications of VRP problems can be seen in daily life, such as distributing newspapers to subscribed buyers, determining bus routes, ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Kimerah (Flueggea Virosa (Roxb. Ex Willd.) Royle)
(Universitas Sumatera Utara, 2023)Isolation and identification of flavonoid compound from stem bark of kimerah (Flueggea virosa (Roxb. ex Willd.) Royle) have been carried out by maceration extraction using methanol as a solvent. The concentrated methanol ... -
Penerapan Metode Simple Additive Weighting (Saw) dalam Keputusan Pemilihan Jurusan di Madrasah Aliyah Negeri 1 Deli Serdang
(Universitas Sumatera Utara, 2023)Madrasah Aliyah Negeri 1 Deli Serdang (MAN) is one of the schools in Tanjung Morawa District, Deli Serdang Regency. This madrasa routinely selects majors for its new students every year. Choosing this major is intended ... -
Penerapan Metode Hungarian pada Industri Mebel Usaha Makmur
(Universitas Sumatera Utara, 2023)The furniture industry is an industry where raw materials made from wood, rattan and other raw materials will be processed into useful and valuable products. One of these industrial sectors continues to increase in ...