Doctoral Dissertations
Doctoral Dissertations
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Pembuatan dan Analisis Resin Komposit Sebagai Bahan Tambal Gigi Berbasis Urethane Dimethacrylate (UDMA) dan Triethylene Glycol Dimethacrylate (TEG-DMA) dengan Fotoinisiator Comphorquinone (CQ) dan Trimethylbenzoyl Phosphine Oxide (TPO)
(Universitas Sumatera Utara, 2024)In this work, urethane dimethacrylate (UDMA) was used as dental resin as an non-toxic alternative to Bisphenol A-glycidyl methacrylate (Bis-GMA). Additionally, UDMA combine with triethylene glycol dimethacrylate ... -
Karakteristik dan Klasifikasi Awan Konvektif Menggunakan Satelit Himawari dengan Pendekatan Model Convolution Neural Network untuk Mitigasi Keselamatan Penerbangan di Wilayah Sumatera Utara
(Universitas Sumatera Utara, 2024)Forecasting rainfall events, such as hefty rainfall, as an early warning is an important component in hydrometeorological disaster mitigation and aviation areas. Improving aviation safety depends on the weather conditions ... -
Pengembangan Klasifikasi dan Identifikasi Jenis Daging Menggunakan Deret Sensor dan Jaring Saraf Tiruan (JST)
(Universitas Sumatera Utara, 2023)Chicken, beef, and lamb are classified based on the distinctive aroma of the meat determined using an electronic nose consisting of a series of sensors with six pieces. This electronic nose also comprises a Conducting ... -
Degradasi Pewarna Tekstil dengan Nanokomposit Cu2O/ZnO/GO melalui Metode Fotokatalisis sebagai Bahan Pengolahan Air Limbah
(Universitas Sumatera Utara, 2023)The development of the textile industry that requires dyes such as Methylene Blue (MB) is very rapid, where MB is very dangerous for human health which can cause irritation to the skin, respiratory tract and the danger ... -
Modifikasi Aspal Berbahan Serbuk Karet Ban Bekas dan Plastik Daur Ulang Polietilena Menggunakan Polimer Reaktif NR-g-MA dan PE-g-MA sebagai Bahan Penyerasi
(Universitas Sumatera Utara, 2024)The main objective of this research is to improve the quality of binder asphalt by adding polymer and reactive polymer as compatibilizer agents to improve asphalt-polymer miscibility. The use of polymer asphalt has been ... -
Karakterisasi Garam Lokal Aceh sebagai Kandidat Phase Change Materials (PCM) untuk Thermal Energi Storage
(Universitas Sumatera Utara, 2022)Thermal energy storage plays important role in energy system and helps in optimize the overall efficiency. Development of energy storage system for particular purposes requires some information on the raw material which ... -
The Enhancement of Transition Temperature and Phase Stability in (TI2-xMxBa2CaCu28-8) High Temperature Superconductor with M=Cr and Te
(Universitas Sumatera Utara, 2017)Two series of the Tl-based (T1-2212) high temperature superconductor, Th2-xCryBa2CaCu2O8- and Th2-TexBa2 CaCu2O-s have been prepared via solid state reaction. The substitution of Cr and Te to the TI-site is aimed to ... -
Pemanfaatan Limbah Padat Industri Karet Sarung Tangan Dan Poliurethane Alam Dalam Pembuatan Genteng Polimer yang Kedap Suara
(Universitas Sumatera Utara, 2013)Polymer's roof has been done using solid waste in rubber gloves industry with the best mixing composition from the making of polymer's roof Samples from any composition which is done thus being pressed by hot compressor ... -
Pengembangan Nanoadsorben Kitosan/Magnetik Fe3o4/ Karbon Aktif Kulit Pisang (K- M- K) untuk Remediasi Air Tercemar
(Universitas Sumatera Utara, 2022)Therefore, it was necessary to develop nano-adsorbents for the remediation of polluted water, this process was carried out by combining Chitosan (C)-Magnetic (M)-activated Carbon (C) materials. The activated carbon used ... -
Preparasi dan Karakterisasi Kain Selfcleaning dan Antibakteri Menggunakan Nanokomposit Abu Boiler Kelapa Sawit, Titanium Dioksida serta Kitosan sebagai Pelapis
(Universitas Sumatera Utara, 2022)Textiles have an important role in the health sector. Recently, textiles have received special attention in the midst of the Covid-19 pandemic that began in 2019. Medical personnel are concerned about the potential for ... -
Pengembangan Lapisan Fecraltiy - Mcraly (M = Co dan Ni) Tahan Oksidasi dan Korosi Temperatur Tinggi Pada Baja Karbon
(Universitas Sumatera Utara, 2020)Low carbon steel is a metal material that is often used for structural applications and piping systems in the industrial world. This is because low carbon steel has good mechanical properties, is relatively inexpensive, ... -
Ketahanan Oksidasi dan Korosi Temperatur Tinggi Lapisan FeCrAITiY-MoSi2
(Universitas Sumatera Utara, 2022)The research has been carried out on the coating of low carbon steel and its characterization. The coating was set up by two different methods, namely the fire flame spray technique and the Spark Plasma Sintering (SPS) ... -
Sintesis dan Karakterisasi Nanokomposit Nickel Kobaltit dan Reduce Grafena Oksida (NiCo204/rGO) Sebagai Material Barn Pembuatan Elektroda Superkapasitor
(Universitas Sumatera Utara, 2022)Pseudocapacitive type supercapacitor electrode material based on nanocomposites has been made from a mixture of NiO nanoparticles, Co3O4 nanoparticles, and reduced graphene oxide (rGO) through coprecipitation and ... -
Sintesis Silikon Dioksida (SiO2) dari Debu Vulkanik Gunung Sinabung, TiO2 dan PVA sebagai Membran Komposit untuk Pengolahan Air dengan Metode Fotokatalis
(Universitas Sumatera Utara, 2022)The study was conducted on the extraction of Mount Sinabung’s volcanic ash with the coprecipitation method to produce silicon dioxide (SiO2). SiO2 was used as a filler in photocatalyst composite membrans which consisting ... -
Sintesis dan Karakterisasi Sodium Mangan Oksida (Na2Mn3O7) sebagai Katoda Baterai Ion Sodium dengan Bahan Pengisi Graphitic Carbon Nanostructures dari Limbah Kulit Durian
(Universitas Sumatera Utara, 2021)Na2Mn3O7, which is in triclinic structure, is known to have a high energy capacity value that can be applied as a battery cathode. In addition, graphitic carbon nanostructures (GCN) obtained from durian skin waste was ... -
Sintesis Nanokomposit Fe3O4-ZnO Menggunakan Metode Hidrotermal sebagai Aplikasi Sensor Gas Etanol
(Universitas Sumatera Utara, 2021)This study aims to create a prototype of the ethanol gas sensor. The research was conducted to apply the active material of the ethanol gas sensor by synthesizing Fe3O4-ZnO nanocomposite through the hydrothermal method as ... -
Karakterisasi Kawasan Karst di Desa Sulkam Kabupaten Langkat Sumatera Utara
(Universitas Sumatera Utara, 2015)Research has been done to characterize the karst area in the village Sulkam Langkat district of North Sumatra to obtain resistivity contour laterally and vertically, minerals, elements and morphology, compressive strength ... -
Kajian Pertumbuhan Terumbu Karang Jenis Porites Berdasarkan Anthropogenic Causes dan Natural Causes di Kabupaten Tapanuli Tengah
(Universitas Sumatera Utara, 2015)A research about the growth of coral reef, Porites type in Ungge Island, North Tapanuli regency based on the record of annual ring. The research purpose is to investigate the composition of hard metal, structure and ... -
Studi Sintesis dan Karakteristik Film Tipis ZnO dengan Metode Sol-Gel Spin Coating
(Universitas Sumatera Utara, 2015). ZnO thin films have been successfully synthesized by using sol-gel Spin coating and mixing processes with reflux technique. Materials used Zinc acetate dehydrate {Zn(CH3COO)2 2H2O} as the base material, isopropanol as ... -
Karakterisasi Lapisan Film Tipis GaAs yang ditumbuhkan dengan Metode MOCVD di Atas Substrate Ge
(Universitas Sumatera Utara, 2013)Thin epitaxial GaAs films, with thickness varying are 350 nm, 500 nm, and 1 μ m were grown by metalorganic chemical vapour deposition (MOCVD) on Ge substrate. All sample characterized by Raman spectroscopy, ...
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