Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1021-1040 of 11354
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Penambahan Ekstrak Daun Suji (Dracaena Angustifolia Roxb.) pada Pakan Buatan Terhadap Pertumbuhan dan Kelangsungan Hidup Benih Ikan Nila Merah (Oreochromis Sp.) SKRIPSI
(Universitas Sumatera Utara, 2023)Red tilapia (Oreochromis sp.) is a edible fish that many people still favorite. Red tilapia production is currently being developed to increase aquaculture production. Red tilapia has advantages such as rapid growth, ... -
Keanekaragaman Genetik Durian Lokal (Durio Zibethinus Murr.) di Sumatera Utara Berdasarkan Barcode Its (Internal Transcribed Spacer)
(Universitas Sumatera Utara, 2023)North Sumatera is one of the durian producers in Indonesia. Molecular scientific studies of local durian at North Sumatera were still limited. This research aims to determine molecular characteristics of local durian (Durio ... -
Penaksiran Parameter Generalized Linear Mixed Model Menggunakan Maximum Likelihood
(Universitas Sumatera Utara, 2023)The Generalized Linear Mixed Model (GLMM) is a model that combines characteristics from the General Linear Model (GLM) and the Linear Mixed Model (LMM). In this model, the response variable can be derived from an exponential ... -
Dimensi Partisi pada Graf Payung
(Universitas Sumatera Utara, 2023)Let G(V,E) be aconnectedgraphwiththevertexset V and thesetofedges E. GivenapartitionΠof V (G) with k component classintheformΠ = {L1, L2, · ·· , Lk}. The representationofthepoint t withrespectto Π is definedasavectorwith ... -
Hubungan Panjang Berat, Kepadatan dan Faktor Kondisi Ikan Belanak (Mugil Cephalus) di Perairan Pantai Bagan Kuala, Kabupaten Serdang Bedagai
(Universitas Sumatera Utara, 2023)Mullet fish (Mugil cephalus) is one of fishes often catches by the fisherman surrounding Bagan Kuala Beach and is consumed by the community because it is nutritious and it has economic value. This research aimed to determine ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Buah Tumbuhan Butun (Barringtonia Asiatica (L.) Kurz)
(Universitas Sumatera Utara, 2023)One of the plants that can be used for traditional medicine is butun (Barringtonia asiatica (L.) Kurz). The fruit can be used to control scabies, the leaves are commonly used to treat stomach aches and rheumatism and the ... -
Pemurnian Minyak Jelantah Menggunakan Adsorben Berbasis Zeolit Alam Pahae dan Karbon Aktif Sekam Padi
(Universitas Sumatera Utara, 2023)This research aims to purify used cooking oil using adsorbents based on pahae natural zeolite and rice husk activated carbon. Zeolite as matrix and rice husk activated carbon as filler were made into powder with a size of ... -
Pembuatan dan Karakterisasi Mullite dari Kaolin Alam dan Alumina Dross
(Universitas Sumatera Utara, 2023)Ceramic mullite has been made using several materials, namely kaolin, pure alumina, and alumina dross. Mullite was prepared with a stoichiometric composition of 2Al2O3.SiO2, with variations in pure alumina and the addition ... -
Pengaruh Paparan Pulsa Medan Elektrik Terhadap Penurunan Bakteri pada Daging Ayam
(Universitas Sumatera Utara, 2023)Chicken meat consumption in Indonesia has been consistently increasing annually. However, the quality control mechanisms governing chicken meat production remain deficient. This is exemplified by the fact that chicken meat ... -
Sistem Monitoring pada Alat Destilasi Crude Oil Limbah Plastik Berbasis IoT
(Universitas Sumatera Utara, 2023)Purification of plastic waste crude oil by distillation process is carried out to produce purer oil products. This research aimed to utilise technological advances in producing an Internet of Things (IoT)-based monitoring ... -
Simulasi Numerik dari Model Dinamika Opini dengan Gangguan pada Kisi Dua Dimensi
(Universitas Sumatera Utara, 2023)This study examines the Sznajd opinion dynamics model with a noise parameter has been analyzed. The Sznajd model describes agent-agent interaction rules to reach an agreement or consensus. The model is implemented on a two ... -
Pengaruh Penambahan Silika Sol Sebagai Filler dalam Pembuatan Mullite Fiber (Sio2.Al2o3)
(Universitas Sumatera Utara, 2023)Research has been carried out on the effect of adding silica sol as a filler in making mullite fiber (SiO2.Al2O3). Mullite Fiber is a combination of two oxide compounds. Mullite Fiber was developed in the process of ... -
Pembuatan Papan Komposit diperkuat Sekam Padi -Serat Sabut Kelapa dan Serbuk Gergaji Kayu dengan Resin Epoksi
(Universitas Sumatera Utara, 2023)The manufacture of rice husk - coconut fiber and wood sawdust reinforced composite board with epoxy resin has been conducted as an alternative composite material. Rice husk and wood sawdust used are 145 μm and coconut fiber ... -
Pembuatan Dan Karakterisasi Adsorben Berbasis Zeolit Alam Pahae dan Karbon Aktif Cangkang Kemiri untuk Penjernihan Air Gambut
(Universitas Sumatera Utara, 2023)Adsorbents based on pahae natural zeolite and hazelnut shell activated carbon have been made to purify peat water into clean water that can meet the requirements of clean water quality. Zeolite as matrix and hazelnut shell ... -
Karakterisasi Papan Komposit Berbahan Serbuk Gergaji Kayu dan Serat Daun Nanas dengan Resin Polyester
(Universitas Sumatera Utara, 2023)Research has been carried out on the characterization of composite boards made from pineapple leaf fiber wood sawdust and polyester resin, with the characterization carried out including physical tests, mechanical tests ... -
Studi Karakterisasi Co0.9Ni0.1Fe2o4 sebagai Material Penyerap Logam Berat
(Universitas Sumatera Utara, 2023)In this research, cobalt nickel ferrite has been synthesized as a heavy metal absorbing material from natural iron sand using the coprecipitation method. The coprecipitation method was applied with a stirring temperature ... -
Pembuatan Natrium Karboksimetil Selulosa (Na-Cmc) dari Selulosa Pelepah Kelapa Sawit Menggunakan Variasi Perbandingan Pelarut Isopropanol-Butanol
(Universitas Sumatera Utara, 2023)Oil palm fronds as agricultural waste biomass can serve as a source of cellulose that can be modified into Sodium Carboxymethylcellulose (Na-CMC). α-Cellulose was isolated using two methods, a dilute acid treatment using ... -
Sensitivitas Elektroda Termodifikasi Kitosan/Grafena Oksida Tereduksi/Mangan Dioksida dalam Mendeteksi Kolesterol
(Universitas Sumatera Utara, 2023)In this research, chitosan/reduced graphene oxide (rGO)/manganese dioxide (MnO2) modified electrodes have been successful in detecting cholesterol using the cyclic voltammetric method. The addition of manganese dioxide ... -
Studi Karakterisasi Co0.9Ni0.1Fe2O4 Sebagai Material Penyerap Logam Berat
(Universitas Sumatera Utara, 2023)In this research, cobalt nickel ferrite has been synthesized as a heavy metal absorbing material from natural iron sand using the coprecipitation method. The coprecipitation method was applied with a stirring temperature ... -
Sintesis dan Karakterisasi Komposit CoFe204 dan rGO Menggunakan Metode Sonokimia sebagai Absorber Gelombang Mikro
(Universitas Sumatera Utara, 2023)