Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 961-980 of 11354
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Penaksiran Parameter Regresi Nonlinear Menggunakan Particle Swarm Optimization dan Genetic Algorithm
(2023)This research aims to estimate and compare the results of parameter estimation for nonlinear regression using the Particle Swarm Optimization and Genetic Algorithm algorithms. In Nonlinear Regression Models, parameter ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik dari Kulit Batang Saga (A denanthera pavonina L .)
(Universitas Sumatera Utara, 2023)The phenolic compound had been I solated fro,n the stein bark of the saga (Aden1.u1thera pavonine L.). Iso lation was carried out by 1111.1ce r atior1 extraction method with methanol and 111ethanol extract was re-extracted ... -
Analisis Sensitivitas Metode Cutting Plane pada Masalah Optimasi
(Universitas Sumatera Utara, 2023)This research discusses linear programming, which aims to obtain an optimal value to maximize profit in selling various types of filled bread using the cutting plane method to obtain integer results. In addition, sensitivity ... -
Penerapan Metode Analytical Hierarchy Process (AHP) dan Simple Additive Weighting (SAW) dalam Penentuan Penerima Bantuan Langsung Tunai Dana Desa (BLT DD)
(Universitas Sumatera Utara, 2023)The government’s plan, called Bantuan Langsung Tunai (BLT), helps underprivileged people with criteria or without criteria by providing cash or other assistance. BLT, PKH, basic food social assistance, house renovations ... -
Kajian Metode Analytical Hierarchy Process (Ahp) dan Technique For Order Preference By Similarity To Ideal Solution (Topsis) Serta Penerapannya
(Universitas Sumatera Utara, 2023)The Analytical Hierarchy Process (AHP) approach and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method are two methods that are commonly used to handle multicriteria problems. The AHP technique ... -
Pengaruh Benzoil Peroksida sebagai Inisiator Pengikat Silang Terhadap Karakteristik Adesif Karet Alam (Sir-10)/Karet Alam Terepoksidasi (Kae) dengan Pengisi Mikrobentonit
(Universitas Sumatera Utara, 2023)This research examined the effect of benzoyl peroxide as a cross-linking initiator on the adhesive characteristics of natural rubber (SIR-10)/epoxidized natural rubber (KAE) with microbentonite filler. Benzoyl peroxide ... -
Pembuatan Natrium Karboksimetil Selulosa (Na-CMC) dari Selulosa Kulit Buah Pinang (Areca Catechu L.) pada Variasi Konsentrasi Naoh
(Universitas Sumatera Utara, 2023)Areca Nut Shells Fro,11 Agricultural Waste Can Be Used To Produce Cellulose, Which Is Then Converted Into Sodiu,N Carboxy,Nethyl Cellulose (Na-CMC). Cellulose Was Isolated Using A Con1binatio11 Of Two 111ethods, Naniel ... -
Pengaruh Pemberian Susu Kefir dengan Penambahan Ekstrak Bonggol Nanas Terhadap Kadar Glukosa Darah Tikus Wistar yang Diinduksi Streptozotocin
(Universitas Sumatera Utara, 2023)Preparation of kefir combination of goat milk and almond milk using pineapple fruit tuber extract 5%. The variation used in this study was the ratio of goat milk: almond milk (v/v) with a ratio of 20:80, 30:70, 40:60, ... -
Pembuatan Sediaan Emulsi Gel Pelembab yang Mengandung Kitosan Oligosakarida dan Nanogold sebagai Whitening Agent
(Universitas Sumatera Utara, 2023)Research has been carried out on the manufacture of a moisturizing gel emulsion containing chitosan oligosaccharide and nanogold as a whitening agent. Cosmetics have now become an important need for humans, especially ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Buah Pacar Kuku (Lawsonia Inermis L.)
(Universitas Sumatera Utara, 2023)Isolation and ident fication of flavonoid compounds from henna fruit (Lawsonia inermis L.) through phytochemical screening where the ethyl acetate extract of henna fruit is positiveforflavonoids with 5% FeCl3 reagent and ... -
Analisis Persebaran Road Dust Resuspension Suspension (RDR-S) dengan Parameter Logam Besi, Timbal dan Cobalt di Jalan Sisingamangaraja Kota Medan
(Universitas Sumatera Utara, 2023)This research aims to evaluate and analyze the concentration of heavy metal content in Road Dust Resuspension-Suspension and understand its distribution pattern on Jalan Sisingamangaraja, Medan City. The metal concentration ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik dari Daun Ceri Pantai (Eugenia Reinwardtiana DC.)
(Universitas Sumatera Utara, 2023)Isolation and identification of phenolic compound from cedar bay cherry leaves (Eugenia reinwardtiana DC.) have been carried out by maceration extraction using methanol as a solvent. The concentrated methanol ... -
Pengaruh Variasi Rasio Jumlah Metanol Terhadap Minyak Jarak pada Konversi Metil Ester dengan Katalis Mesopori Silika Diimpregnasi Kalsium Oksida
(Universitas Sumatera Utara, 2023)Research has been carried out on the effect of CaO addition on mesoporous silica impregnation and its application as a catalyst in castor oil transesterification with variations in the amount ratio of methanol to castor ... -
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 ... -
Analisis Kadar Logam Besi, Kadmium, dan Kromium dalam Road Dust Re-Suspension (RDR-S) Serta Pola Persebarannya di Jalan Sisingamangaraja
(Universitas Sumatera Utara, 2023)Technological advances that produce ernissions from transportation activities cause the co,nposition of free air to change. Air pollt1tion is also cat1sed by road dust in the for,11 of solid particles scattered on the road ... -
Isolasi Dan Identifikasi Golongan Senyawa Fenolik Daribuah 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 ... -
Analisis Konsentrasi Logam Besi, Zink, Tembaga dalam Road Dust Suspension-Resuspension dan Pola Persebarannya 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 concentration ... -
Karakterisasi Mutu Susu Probiotik Kefir Kombinasi Susu kambing dan susu Aimond dengan penambahan Ekstrak Bonggol Nanas
(2023)Kefir 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 ... -
Karakteristik Adesif Berbasis Karet Alam (Sir 10)/Karet Stiren Butadiena Dengan Pengisi Mikrobentonit Dan Benzoil Peroksida Sebagai Inisiator Pengikat Silang
(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 ...