Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1341-1360 of 11346
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Potensi Jenis Makanan Burung Migran di Kecamatan Pantai Labu Sumatera Utara
(Universitas Sumatera Utara, 2023)Migratory birds are birds that migrate regularly every year. The existence of migratory birds at an area is largely determine by the availability of the natural resources such as habitat, food and also the environmental ... -
Potensi Jenis Makanan Burung Migran di Kecamatan Pantai Labu Sumatera Utara
(Universitas Sumatera Utara, 2023)Migratory birds are birds that migrate regularly every year. The existence of migratory birds at an area is largely determine by the availability of the natural resources such as habitat, food and also the environmental ... -
Analisis Sensitivitas Kelayakan Finansial Produksi Kelapa Sawit
(Universitas Sumatera Utara, 2023)This study aims to analyse the sensitivity of the financial feasibility of oil palm production. The method used in this study is a sensitivity analysis of the financial feasibility of oil palm production. Oil palm has an ... -
Penerapan Metode Arima-Marcov Chain dalam Memprakirakan Permintaan dan Mengoptimalkan Persediaan Crude Palm Oil (Cpo) pada PT. Sumber Sawit Makmur
(Universitas Sumatera Utara, 2023)For the business world, especially PT. Sumber Sawit Makmur, to be successful in the current era of globalization, inventory is a very important component. The company may be better equipped to meet customer demand if it ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Buah Tumbuhan Simpur Air (Dillenia Suffruticosa (Griff.) Martelli)
(Universitas Sumatera Utara, 2023)Isolation and identification of the class of flavonoid compounds contained in the rind of the Simpur Air (Dillenia suffruticosa (Griff.) Martelli) fruit has been carried out by maceration extraction with methanol as a ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Tumbuhan Kareumbi (Homalanthus Populneus (Geiseler) Pax)
(Universitas Sumatera Utara, 2023)Isolation and identification of flavonoid compounds from the stem bark of Kareumbi (Homalanthus populneus (Geiseler) Pax) through maceration extraction with methanol solvent has been carried out. The concentrated methanol ... -
Kinerja Elektroda Aluminium/Grafena Berlapis Nano, Nh4cl-Mno2 dan Grafena Berlapis Nano pada Berbagai Variasi Rasio Berat sebagai Elektroda Baterai Primer
(Universitas Sumatera Utara, 2022)Research on the performance of Aluminum (Al)/Graphene Nano Sheets (GNS), NH4Cl-MnO2 and GNS on Weight Ratio Variations for primary Battery Electrodes has been carried out. GNS was produced from coconut fruit using the ... -
Karakterisasi Sifat Optik Carbon Dots Berbahan Dasar Gula Aren dengan Penambahan Hno3, H2so4 dan H3bo3 sebagai Agen Pasivasi
(Universitas Sumatera Utara, 2023)Synthesis of carbon dots based on palm sugar using the hydrothermal method has been carried out. Palm sugar dissolved in aquades added passivation agent consisting of HNO3, H2SO4 and H3BO3 in a ratio of 1:1 was used to ... -
Pembuatan Mullite Berpori dari Kaolin Alam dan Limbah Alumina
(Universitas Sumatera Utara, 2023)Mullite is made using several materials such as kaolin, alumina dross, pure alumina and aluminum powder. This research was conducted by milling method and sintering process. The results of the X-Ray Fluorescence ... -
Sintesis dan Karakterisasi Zeolit Alam Pahae-Bottom Ash Batubara sebagai Adsorber Logam Fe dan Mn pada Air Sumur
(Universitas Sumatera Utara, 2023)Research had carried out for the manufacture of Pahae natural Zeolite-Bottom ash-based adsorbents from coal as an adsorbent for Fe and Mn metals in well water. The manufacture of adsorbents made from Pahae natural ... -
Pembuatan dan Karakterisasi Beton PolimerBerbasis Fly Ash Batubara-Serat Eceng Gondok dengan Resin Epoksi
(Universitas Sumatera Utara, 2023)The research has been done on manufacturing of polymer concrete which was made from sand, fly sh, waste of fiber water hyacinth and epoxy resin. Manufacture of sample wasmade with sieving stage of 100 mesh, mixing the ... -
Preparasi dan Karakterisasi Membran Fiber Berbasis Selulosa Asetat/Zeolit Alam Pahae Menggunakan Metode Electrospinning sebagai Filter Air Laut
(Universitas Sumatera Utara, 2023)Membran fiber berbasis selulosa asetat dengan penambahan zeolit alam pahae, telah berhasil didapatkan melalui metode Electrospinning. Sintesis membran dilakukan dengan memvariasikan zeolit alam Pahae terhadap 15wt% ... -
Jenis Kura-Kura di Taman Nasional Gunung Leuser, Stasiun Pengamatan Sikundur, Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2023)Kura-kura merupakan hewan reptil yang dapat ditemui didaerah beriklim sedang dan tropis. Hewan ini memiliki ciri-ciri yang sangat mudah untuk dikenali karena mempunyai bentuk tubuh yang khas, di wilayah dataran utama ... -
Sintesis dan Karakterisasi Zeolit Alam Pahae –Arang Aktif Kulit Durian sebagai Adsorber Pereduksi Fosfat pada Limbah Laundry
(Universitas Sumatera Utara, 2023)Research on the synthesis and characterization of pahae natural zeolite – activated charcoal of durian peel as a phosphate reducing adsorber in laundry waste has been carried out. The aim of the research is to produce ... -
Analisis Data Magnitude Gempa Bumi Gunung Sinabung dengan Menggunakan Broadband Seismograph
(Universitas Sumatera Utara, 2021)An analysis of the Magnitude Data of the Mount Sinabung Earthquake has been carried out by using a Broadband Seismograph. The Mount Sinabung volcanic earthquake in 2020 occurred 23 earthquakes. From the calculation of the ... -
Penerapan Analytical Hierarchy Process (AHP) dalam Menganalisis Faktor Pemilihan Masyarakat terhadap Bus Trans Metro Deli
(Universitas Sumatera Utara, 2023)This study uses the Analytical Hierarchy Process (AHP) method to determine what the community's priorities are when boarding the Trans Metro Deli bus. The approach to the AHP method is to organize the problem to be examined ... -
Rancang Bangun Alat Kontrol Kecepatan Motor Induksi Satu Fasa Berbasis Pwm Menggunakan Mikrokontroler Arduino Uno
(Universitas Sumatera Utara, 2023)Speed Control Device of Single Phase Induction Motor with frequency control has been successfully designed. It was designed using an inverter circuit consisting of a rectifier, an H Bridge circuit, a voltage amplifier ... -
Analisis Kadar Cemaran Logam Merkuri dalam Kosmetik Sediaan Krim Pemutih Wajah yang Beredar di Kota Medan Secara Spektrofotometri Serapan Atom
(Universitas Sumatera Utara, 2023)Currently, cosmetics are needed by people of all ages. It is not only used to give fragrance and make-up, but also to give a bright face effect, so market demand is increasing. Because of this need, not a few cosmetics on ...