Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1221-1240 of 11349
-
Pembuatan Kardanil Metil Eter Melalui Reaksi Eterifikasi Kardanol Hasil Isolasi Kulit Biji Jambu Mete (Anacardium occidentale L.) dengan Variasi Molar Dimetil Sulfat
(Universitas Sumatera Utara, 2023)The synthesis of methyl ether cardanyl was carried out through the etherification reaction between cardanol, which was isolated from cashew nut shell liquid (CNSL) of Anacardium occidentale L., and dimethyl sulfate. The ... -
Pembuatan Virgin Coconut Oil (VCO) Secara Enzimatis Menggunakan Enzim Protease yang diisolasi dari Kulit Buah Melinjo (Gnetum gnemon L.)
(Universitas Sumatera Utara, 2023)The enzymatic production of Virgin Coconut Oil (VCO) using protease enzymes isolated from the skin of the melinjo fruit (Gnetum gnemon L.) has been completed. Protease enzyme was isolated from ripe melinjo fruit rind (red) ... -
Pembuatan Hidrolisat Protein Ikan Nila (Oreochromis niloticus) Secara Enzimatis dengan Kombinasi Enzim Bromelin dan Enzim Pepsin
(Universitas Sumatera Utara, 2023)Tilapia (Oreochromis niloticus) is a freshwater fish that has better nutritional content than other freshwater fish. Tilapia can be used as a source of Protein hydrolyzate. Protein hydrolyzate is the result of the ... -
Penyediaan Pembalut Luka Diabetes Berbasis Selulosa Bakteri dengan Impregnasi Nanoenkapsulasi Andaliman (Zanthoxylum acanthopodium) Kurkumin (Curcuma longa) Sebagai Antiinflamasi dan Antibakteri
(Universitas Sumatera Utara, 2023)Diabetes mellitus is a chronic disease and usually causes wounds caused by infection due to high blood glucose levels, making it a strategic place for the growth of germs. Wounds in diabetics can be treated early to prevent ... -
Rancangan dan Pembuatan Sistem Proteksi Motor terhadap Panas dan Kelebihan Beban Berbasis Mikrokontroler Atmega8535
(Universitas Sumatera Utara, 2023)A motor protection system against heat and overload has been successfully designed based on the ATMega 8535 microcontroller. This tool is designed to determine whether the system can protect against thermal and overcurrent ... -
Pembuatan Beton Polimer Berbasis Biji Salak dan Serbuk Kayu dengan Resin Polyester Sebagai Perekat
(Universitas Sumatera Utara, 2023)Research has been conducted on polymer concrete based on snake fruit seed powder, wood powder, and polyester resin. This study aims to determine the effect of the addition of salak seeds and wood powder on the physical and ... -
Preparasi dan Karakterisasi Biopolimer Berbasis Selulosa Bakteri dengan Karboksimetil Selulosa Secara Insitu
(Universitas Sumatera Utara, 2023)A research study on the preparation and characterization of bacterial cellulose-based biopolymers from green tea kombucha with in-situ addition of carboxymethyl cellulose has been conducted. Bacterial cellulose was produced ... -
Pembuatan dan Karakterisasi Superabsorben Polimer Berbasis Karboksimetil Selulosa dan Hidroksietil Selulosa dengan Agen Pengikat Silang Divinil Sulfon
(Universitas Sumatera Utara, 2023)This research discusses the manufacturing process and characterization of superabsorbent (SAP) based on carboxymethyl cellulose (CMC) and hydroxyethyl cellulose (HEC) with divinyl sulfone as a crosslinking agent. This ... -
Sintesis dan Karakterisasi Kitosan dan Turunannya pada Pembuatan Hand and Body Cream Sebagai Antibakteri
(Universitas Sumatera Utara, 2023)Chitosan has many functions developed in various fields and products. One of the interesting functional properties of chitosan to develop is its nature as an antioxidant that can stabilize free radicals that cause dry ... -
Karakterisasi dan Analisis Bolus Radioterapi dari Silicone Rubber, Resin Epoksi dan Ampas Tebu Menggunakan Energi Berkas Elektron
(Universitas Sumatera Utara, 2023)A radiotherapy bolus composite material has been prepared from a mixture of silicone rubber, epoxy resin as an adhesive, catalyst as a material to accelerate bolus hardening and bagasse as filler with variations in the ... -
Pengaruh Variasi Penambahan Metil Oleat sebagai Template terhadap Porositas Kalsium Silikat dari Abu Sekam Padi
(Universitas Sumatera Utara, 2023)Research has been carried out on the formation of calcium silicate pores from rice husk ash without a template and with the addition of methyl oleate as a template. This synthesis was carried out by extracting silica from ... -
Pengaruh Penambahan Alfa Selulosa Tebu (Saccharum officinarum. L) Sebagai Penguat Gigi Tiruan Resin Akrilik Terhadap Sifat Mekanik Komposit
(Universitas Sumatera Utara, 2023)This study was conducted to assess the potential of sugarcane α-cellulose (Saccharum officinarum. L) as an acrylic resin denture reinforcement. Sugarcane α-cellulose was used in addition to filler material with weight ... -
Pengaruh Berat Polipropilena terhadap Sifat Fisik dan Mekanik Papan Partikel Menggunakan Ampas Tebu (Saccharum Officinarum L.) dan Polipropilena yang Tergrafting Maleat Anhidrat
(Universitas Sumatera Utara, 2023)The effect of weight of polypropylene on physical and mechanical particle board using bagasse (Saccharum officinarum L.) and polypropylene grafted maleic anhydrous has been done. It was conducted in three steps. The first ... -
Pengaruh Variasi Penambahan Polietilen Glikol Sebagai Template terhadap Porositas Magnesium Silikat Dari Abu Sekam Padi
(Universitas Sumatera Utara, 2023)Research has been carried out on the formation of magnesium silicate pores from rice husk ash with and without the addition of polyethylene glycol as a template. This synthesis was carried out by extracting silica from ... -
Analisis Cluster Hierarki dan Pemetaan Kemiskinan Provinsi Sumatera Utara Tahun 2019
(Universitas Sumatera Utara, 2021)North Sumatra is a province with a high percentage of poor people. To determine poverty reduction policies, the factors that influence poverty should be noticed properly. In addition, poverty in each region has different ... -
Menentukan Jumlah Produksi Optimal Crude Palm Oil (CPO) dengan Menggunakan Metode Economic Production Quantity (Studi Kasus: PT. Perkebunan Nusantara II Sawit Seberang)
(Universitas Sumatera Utara, 2023)PT. Perkebunan Nusantara II Sawit Seberang is a state-owned company that produces Crude Palm Oil (CPO). In production activities, companies often experience the problem of excess inventory, this problem can result in losses ... -
Penerapan Metode TOPSIS dalam Menentukan Tingkat Kemiskinan Kabupaten/kota di Provinsi Sumatra Utara
(Universitas Sumatera Utara, 2023)The increasing poverty rate in North Sumatra can be mitigated after two years of Covid-19. The poverty rate for North Sumatra is ranked 18th nationally in 2021. The problem for the government is to determine which ... -
Pendekatan Fuzzy Goal Programming dalam menentukan solusi optimum persoalan Multi-Objective Transportation Problem dengan adanya skala prioritas
(Universitas Sumatera Utara, 2023)This research discusses the development of a fuzzy goal programming model for solving multi-objective transportation problems, which is an expansion of ordinary transportation problems. In this problem, there are non-linear ... -
Implementasi Metode Holt-Winters untuk Peramalan Harga Daging Sapi dan Telur Ayam di Pasar Tradisional Sumatera Utara
(Universitas Sumatera Utara, 2023)This study aims to forecast food price data for beef and chicken eggs in traditional markets of North Sumatra by applying the Holt-Winters method. The Holt-Winters Additive and Multiplicative methods will apply to food ... -
Penerapan Model Regresi Logistik untuk Mengidentifikasi Potensi Faktor Risiko Malaria di Sumatera Utara
(Universitas Sumatera Utara, 2023)In this study the aim was to form a mathematical model based on risk factors that have an influence on the spread of malaria in North Sumatra Province. The data used in this research is secondary data obtained from the ...