Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1281-1300 of 11345
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Analisis Kariotipe Kromosom Ikan Sumatra (Puntius tetrazona Bleeker, 1855) dengan menggunakan Software IdeoKar 1.3
(Universitas Sumatera Utara, 2023)The Sumatra fish, Puntius tetrazona, is an ornamental fish native to Indonesia with an attractive appearance. This research aimed to analyze the karyotype of Sumatra fish chromosomes, including the number, the size, ... -
Identifikasi Ektoparasit Sapi (Bos Sp.) di Kebun Kelapa Sawit Afdeling Ii, Desa Gunung Kataran, Kecamatan Tebing Tinggi, Kabupaten Serdang Bedagai, Sumatera Utara
(Universitas Sumatera Utara, 2023)The high or low attack of ectoparasites in cattle is one of the supporting factors of the successfull of the raising cattle. The research of the identification of cattle ectoparasites (Bos sp.) at Afdeling II palm oil ... -
Jenis, Prevalensi dan Intensitas Endoparasit Gastrointestinal Kambing Peranakan Ettawa (Pe) (Capra Hircus Linn.) di Peternakan Jono, Medan Selayang, Sumatera Utara
(Universitas Sumatera Utara, 2023)The research of endoparasite infection of ettawa crossbred goats (Capra hircus Linn.) in Jono Farmers, Medan Selayang, North Sumatera was conducted in Desember 2022. The purpose of this research was to determine the ... -
Integer Goal Programming
(Universitas Sumatera Utara, 2006)Integer Goal Programming is a multi criteria decision model in which the decision variables are restricted to have integer value. There are many applications of such a model, i.e scheduling, planning, portfolio optimization ... -
Menyelesaikan Quadratic Assignment Problem dengan Metode Heuristik Kelayakan
(Universitas Sumatera Utara, 2006)The Quadratic assignment problem (QAP) is a combinatorial problem of deciding the placement of facilities in specified locations in such a way as to minimize a nonconvex objective function expressed interns of distance ... -
Asap Cair Cangkang Kelapa Sawit sebagai Pengawet dan Jaringan Semi Interpenetrasi Polimer pada Kayu Kelapa Sawit
(Universitas Sumatera Utara, 2007)This research aim to improve the properties of palm oil wood by used liquid smoke from palm shell pyrolysis and formed semi-interpenetrating polymer network by used toluene diisosianat as active monomer with in situ ... -
Sintesis 2-N-(Pentanadioat)-(12-Dodekanoiloksi) Oktadeka-9-Enamida Melalui Reaksi Esterifikasi Metil Risinoleat dengan Asam Laurat yang Diikuti Amidasi dengan Asam Glutamat
(Universitas Sumatera Utara, 2005)Methanolysis of castor oil produce of fatty acid methyl ester castor oil. Methyl ricinoleic as main composition in castrol oil could be acetylated with acetic acid anhydride give 12-acetoxy 9-octadecenoate, which then ... -
Isolasi dan Skrining Bakteri Selulolitik dari Usus Belalang (Oxya Chinensis) dan Potensi Selulolitiknya
(Universitas Sumatera Utara, 2023)Grasshoppers are herbivorous insects or plant eaters which in large quantities can cause losses to farmers. Many studies have been conducted on cellulolytic microbes from herbivorous insects. This study aims to obtain ... -
Jenis, Prevalensi dan Intensitas Ektoparasit Kerbau (Bubalus Bubalis) yang di Pelihara Secara Semi Intensif di Desa Selamat Kabupaten Deli Serdang, Sumatera Utara
(Universitas Sumatera Utara, 2023)Buffalo (Bubalus bubalis) is a type of ruminant that important component in health development that support farming community businesses in rural areas. Buffaloe is one of animal species that susceptible infected by ... -
Uji Efektivitas Nanoherbal Daun Gagatan Harimau (Vitis Gracilis Wall.) Terhadap Histologi Jantung pada Tikus Wistar (Rattus Norvegicus L.) Jantan yang diberi Latihan Fisik
(Universitas Sumatera Utara, 2023)Gagatan harimau (Vitis gracilis wall.) is one of the Indonesian plants that has bioactive compounds and is beneficial as an antioxidant. In order to get the maximal effects, it need a specific preparation of this ... -
Variasi Media Tanam dan Penambahan Ekstrak Taoge Terhadap Pertumbuhan Microgreen Lobak Merah (Raphanus Sativus L.)
(Universitas Sumatera Utara, 2023)Microgreen are vegetables that can be harvested at a young age, approximaly at 7 to 14 days after sowing. The growth of microgreen is highly dependent on the planting media. The research on the Variation of Planting ... -
Uji Efektivitas Nanoherbal Daun Gagatan Harimau (Vitis Gracilis Wall.) Terhadap Histologi Ginjal pada Tikus Wistar (Rattus Norvegicus L.) Jantan yang diberi Latihan Fisik
(Universitas Sumatera Utara, 2023)Excessive swimming exercise will trigger an increase of free radicals in the body known as oxidative stress. Nano herbal of Gagatan harimau (Vitis gracilis) leaves contains of secondary metabolites such as flavonoids ... -
Perbandingan Akurasi Metode Exponential Smoothing Brown dan ARIMA dalam Meramalkan Jumlah Produksi Crude Palm Oil (CPO) PTPN II Sawit Seberang
(Universitas Sumatera Utara, 2023)Crude Palm Oil (CPO) is one of the most widely used and produced types of oil in the world, accounting for more than 40% of all types of vegetable oil. Planning for forecasting the amount of Crude Palm Oil production ... -
Pembuatan Phase Change Material dengan (80%, 70%) PEG 6000-Magnetite (20%, 30% Fe3O4) pada Beton Enkapsulasi Sebagai Thermal Energy Storage
(Universitas Sumatera Utara, 2023)Phase Change Material (PCM) as Thermal Energy Storage has been made by mixing PEG 6000-Magnetite (Fe3O4) by sonication method using a temperature of 80ºC and a frequency of 37 KHz. Where the composition variation used ... -
Kelimpahan, Pola Distribusi dan Pola Pertumbuhan Lobster Air Tawar (Cherax quadricarinatus) Di Perairan Sungai Aek Jambu, Desa Batang Bulu Jae, Kabupaten Padang Lawas, Sumatera Utara
(Universitas Sumatera Utara, 2023)The Aek Jambu River is a body of water that has a river length of 2210 meters and a river width of 4 to 7 meters. This river is used by the local community as a source of irrigation water for the needs of rice fields, ... -
Pemanfaatan Cesium – 137 Sebagai Sumber Standar Kalibrasi pada Alat Ukur Radiasi Pen Dosimeter Type DMC 3000 Sn. 01A0734C
(Universitas Sumatera Utara, 2022)Utilization ionizing radiation was contained in Government Regulation of the Republic of Indonesia No. 33 of 2007 concerning the safety and security provisions for the used of ionizing radiation refers to the provisions ... -
Penerapan Metode Fuzzy Time Series Model Cheng dalam Meramalkan Harga Saham PT Bukit Asam Tbk
(Universitas Sumatera Utara, 2023)Investment in stocks is one type of investment that can get huge profits, but there are also great risks. So it is necessary to analyze in advance before starting an investment in stocks, in order to avoid losses. One ... -
Klasifikasi Menggunakan Model Regresi Logistik Multinomial dan Regresi Logistik Multinomial Komponen Utama
(Universitas Sumatera Utara, 2023)There are various methods that can be used in data classification. One of the classification methods is classification using multinomial logistic regression. Multinomial logistic regression is a regression model with a ... -
Implementasi Penerapan Metode Analytical Hierarchy Process (AHP) dalam Pemilihan Paket Layanan Internet
(Universitas Sumatera Utara, 2023)This study’s aim is to measure the level of accuracy and effectiveness of applying the Analytical Hierarchy Process (AHP) method in selecting internet service packages. The initial steps are creating a paired comparison ... -
Peramalan Harga Saham PT Merdeka Copper Gold Tbk. dengan Menggunakan Model ARCH-GARCH
(Universitas Sumatera Utara, 2023)This study’s aim is to obtain a forecasting model and compare the share price of PT Merdeka Copper Gold Tbk. by using time series method, ARCH-GARCH model. The data used is historical data for the period December 2021 – ...