Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 681-700 of 11355
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Karakterisasi Termoplastik Polipropelina (PP) dengan Fillersilika Abu Sekam Padi (ASP) yang Disintesis menggunakan Metode Sol Gel
(Universitas Sumatera Utara, 2024)The manufacture of thermoplastic polypropylene with rice husk ash filler has been carried out using the sol gel method. Preparation and synthesis of rice husk ash silica was carried out using HCl IM and NaOH IM solvents. ... -
Sintesis Karbon Aktif Daun Matoa dengan Aktivator NaOH sebagai Elektroda Superkapasitor
(Universitas Sumatera Utara, 2024)This research is related to the manufacture of supercapacitor electrodes using matoa leaf material and NaOH activators. Making samples begins by drying matoa leaves then the burning process is carried out with temperature ... -
Karakterisasi Barium Heksaferit (BaFe12O19)dan Nikel Oksida (NiO) sebagai Penyerap Gelombang Mikro
(Universitas Sumatera Utara, 2024)The synthesis of Barium Hexaferrite (BaFe12O19) and Nickel Oxide (NiO) composites using the Mechanical Alloying method as microwave absorbers has been successfully carried out. The wet mixing process of BaFe12O19/NiO was ... -
Sintesis dan Karakterisasi Nano Kalsium Fosfat dari Cangkang Kerang Darah dengan Zink Oksida sebagai Bahan Tambal Gigi
(Universitas Sumatera Utara, 2024)Nano calcium phosphate cement has been made using blood cockle shells to produce nano calcium phosphate, nano ZnO and PVA. The preparation of nano calcium phosphate from blood cockle shells was carried out using the ... -
Sintesis dan Karakterisasi Morfologi serta Struktur Kristal untuk Material Komposit Fe3O4/SiO2 dengan Variasi Penambahan SiO2
(Universitas Sumatera Utara, 2024)The synthesis and characterization of Fe3O4/SiO2 composite with variations of SiO2 using the coprecipitation method have been successfully carried out. Fe3O4 has a magnetic ability that can degrade dye waste, while SiO2 ... -
Sintesis Carbon Dots Terdoping N dan S dari Akar Alang-Alang Metode Hydrothermal Untuk Deteksi Curcumin
(Universitas Sumatera Utara, 2024)Research has been carried out on N, S-CDs with the basic ingredient namely reeds roots to be applied as a curcumin detector. N, S-CDs are made from reed roots (Imperata cylindrica radix) with the addition of C3H7NO2S to ... -
Aplikasi Fotokatalis Komposit Fe3O4/SiO2 sebagai Degradasi Air Limbah melalui Uji Methylene Blue (MB)
(Universitas Sumatera Utara, 2024)In this study, synthesis, characterization, and analysis of Fe3O4/SiO2 composite photocatalyst for degradation through methylene blue (MB) was done. Fe3O4/SiO2 composite prepared using coprecipitation method, started ... -
Konversi Pelepah Sawit dan Plastik HDPE menjadi Bio-Oil melalui Proses Ko-Pirolisis menggunakan Katalis Mordenit berbasis Oksida Logam Cu dan Zn
(Universitas Sumatera Utara, 2024)Bio-oil is produced from the thermal decomposition of palm oil frond waste biomass to be used as an alternative raw material source. However, it has weaknesses in its physical and chemical properties such as a high ... -
Karakterisasi BaFe12O19/Co3O4 dengan Metode Mechanical Alloying untuk Penyerap Gelombang Mikro
(Universitas Sumatera Utara, 2024)In this research, morphology, crystal structure and reflection loss (RL) have been synthesized and characterized, which shows how effectively the material can absorb microwaves from BaFe12O19/Co3O4 material using the ... -
Pengaruh Penambahan Limbah Plastik Hdpe (High Density Polyethylene) terhadap Kuat Tekan Beton
(Universitas Sumatera Utara, 2024)Research has been carried out on the Effect of Adding HDPE (High Density Polyethylene) Plastic Waste on the Compressive Strength of Concrete by utilizing waste as raw material for artificial aggregates made from plastic. ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Jeruk Bali Putih (Citrus Grandis L Osbeck)
(Universitas Sumatera Utara, 2024)The flavonoid compounds had been from the bark of the white Bali orange plant (Citrus grandis L. Osbeck). Isolation was carried out by maceration extraction mrthod with mrthanol and methanol extract was re-extracted with ... -
Isolasi dan Uji Antimikroba Bakteri Endofit Tanaman Lidah Buaya (Aloe vera (L.) Burm.f.) terhadap Beberapa Mikroba Patogen Manusia
(Universitas Sumatera Utara, 2022)Endophytic bacteria are bacteria that live inside plant tissues without causing any symptoms. Endophytic bacteria may produce bioactive compound such as antimicrobial substances. Isolation of endophytic bacteria from aloe ... -
Model Program Stochastic Mixed-Integer untuk Penugasan Armada Maskapai dan Masalah Perencanaan Tenaga Kerja
(Universitas Sumatera Utara, 2024)Assignment of the fleet is one of the processes in airline planning, said that the task of the fleet assignment is to determine the most appropriate type of fleet with certain routes in the schedule, while optimizing ... -
Analisis Dinamik Model Penyebaran Rumor dalam Jaringan Sosial Daring dengan Adanya Waktu Tunda
(Universitas Sumatera Utara, 2023)Rumors are a type of social phenomenon where the same comment spreads on a large scale in a short time through a chain of communication. The spread of rumors is essential to social interaction, significantly affecting ... -
Pengembangan Pendekatan Berbasis Kendala dalam Menyelesaikan Persoalan Multi-Period Single Source
(Universitas Sumatera Utara, 2023)The multi-period single-sourcing problem in this study is viewed as finding an assignment model for the problem of assigning each retailer to each specific facility such as warehouses and inventory items at the start of ... -
Perencanaan Optimasi Supply Chain of Crude Palm Oil Industry Menggunakan Model Mixed Integer Linier Programming
(Universitas Sumatera Utara, 2023)The Crude Palm Oil (CPO) industry is an important business that has a network system or also known as a supply chain. The supply chain system or also known as the supply chain procures materials, then processes these ... -
Fluktuasi Harian Kelimpahan Plankton di Perairan Percut Sei Tuan, Kabupaten Deli Serdang
(Universitas Sumatera Utara, 2024)Plankton is an aquatic biota that lives following currents in the waters. Plankton life is very dependent on the quality of water in these waters. Physical and chemical conditions of water that are always changing cause ... -
Kajian Populasi Ikan Kedukang (Hexanematichthys sagor) di Perairan Sungai Percut Kecamatan Percut Sei Tuan, Kabupaten Deli Serdang, Sumatera Utara
(Universitas Sumatera Utara, 2024)Kedukang fish (Hexanematichthys sagor) is one type of consumable fish that is widely caught by fishermen and the community. Catching kedukang fish in the Percut River, Deli Serdang Regency is carried out every day without ... -
Karakteristik Spasial dan Temporal Petir Cloud To Ground (CG) di Kota Medan dan Kabupaten Deli Serdang
(Universitas Sumatera Utara, 2024)The Medan and Deli Serdang areas are areas potentially prone to lightning due to the growth of convective clouds. Lightning analysis methods, spatial and temporal analysis and correlation tests were used to obtain Cloud ... -
Rancang Bangun Sistem Pengamatan Suhu Tanah Digital Berbasis Internet of Things di Stasiun Klimatologi Sumatera Utara
(Universitas Sumatera Utara, 2024)Soil temperature, as one of important parameters in monitoring and understanding climate and soil ecosystems, has a crutial role in various aspects of the environment, including agriculture, ecology, and geoscience. ...