Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1401-1420 of 11350
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Optimalisasi Produksi Palm Kernel Oil (PKO) dengan Metode Economic Production Quantity (Epq) di PT. Perkebunan Nusantara V Pabrik Pko Tandun
(Universitas Sumatera Utara, 2023)A common problem in a company is the excess and shortage of inventory. When inventory is lacking, it will cause congestion in the sales process and can reduce customer trust which causes customers to switch to other places. ... -
Penyelesaian Persoalan Optimasi Transportasi Fuzzy Menggunakan Improved Vogel Approximation Method
(Universitas Sumatera Utara, 2023)Transportation is a special form of the linear program that functions as a solver of transportation problems that aims to minimize costs, distance traveled, and so on in order to obtain maximum profit. The transportation ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida Serta Uji Aktivitas Antibakteri dari Daun Tumbuhan Kanyere Badak (Bridelia glauca Blume) (Phyllanthaceae)
(Universitas Sumatera Utara, 2023)Flavonoid compound had been isolated from 2100 gram Kanyere Badak leaves (Bridelia glauca Blume). Samples were extracted by maceration with methanol as a solvent, then the concentrated methanol extract was dissolved with ... -
Pemanfaatan Kitosan dengan Penambahan Asam Askorbat untuk Menambah Umur Simpan Daging Ikan Nila (Oreochromis niloticus)
(Universitas Sumatera Utara, 2023)Utilization of chitosan with the addition of ascorbic acid to increase the shelf life of tilapia meat using the coating method. In this study, the effectiveness of chitosan with the addition of ascorbic acid was tested. ... -
Karakterisasi Bioplastik dari Pati Sukun (Artocarpus Altilis) dan Carboxy Methyl Cellulose (Cmc) dengan Plasticizer Gliserol
(Universitas Sumatera Utara, 2023)Bioplastic obtained from breadfruit starch (Artocarpus altilis) and carboxy methyl cellulose (CMC) with increasing of glycerol as a plasticizer was carried out by varying the addition of glycerol at concentration of 10%, ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Buah Tumbuhan Arbei (Rubus Rosifolius Sm)
(Universitas Sumatera Utara, 2023)Isolation and identification of flavonoid coumpounds from Arbei fruit (Rubus rosifolius Sm) have been made through the maceration extraction step whit methanol solvent. The concentrated methanol extract was reextracted ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Tumbuhan Mahang Damar (Macaranga triloba (Thumb) Mull. Arg)
(Universitas Sumatera Utara, 2023)The flavonoid compound had been isolated from the leaves of (Macaranga triloba (Thumb.) Mull.Arg). Isolation was carried out using maceration extraction method with methanol. Methanol extract was re-extracted with ethyl ... -
Preparasi Bionanokomposit Nanokristal Selulosa/Grafena Oksida sebagai Film Semikonduktor
(Universitas Sumatera Utara, 2023)Cellulose nanocrystals (NKS) are a material that has high strength characteristics, is transparent, has good magnetic properties, and is biodegradable, which has the potential to replace silica and plastic materials as the ... -
Pengaruh Rasio Massa Anoda Besi, Elektrolit NH4Cl dan Katoda Grafena Berlapis Nano terhadap Kinerja Elektroda Baterai Primer
(Universitas Sumatera Utara, 2023)Research on the performance analysis of various of mass ratio on Iron/Graphene Nano Sheets (GNS)//Electrolyte//GNS as primary battery electrodes has been carried out. The purpose of this study was to produce Fe/GBN/NH4Cl-MnO2/GBN ... -
Peran Bahan Kimia dalam Limbah Udang pada Pembuatan Pupuk Organik dari Tandan Kosong dan Limbah Cair Kelapa Sawit
(Universitas Sumatera Utara, 2007)Compost produced from empty fruit bunches and palm oil mill effluent can be used as organic fertiliser (bokashi). The addition of chemical material in the form of kithin compund found in shrimp waste, during the production ... -
Aplikasi Fungsi Green pada Dinamika Sistem Fisis-Massa Pegas dengan Shock Absorber
(Universitas Sumatera Utara, 2013)Telah dilakukan perhitungan secara analitik mengenai sistem persamaan fisis pada massa pegas shock absorber dengan menggunakan metode fungsi green dan metode koefisien tak tentu. Dalam hal ini akan didapatkan solusi yang ... -
Aplikasi Fungsi Green pada Dinamika Sistem Fisis-Massa Pegas dengan Shock Absorber
(Universitas Sumatera Utara, 2013)Analytical calculated about shock absorber physical system form had been done by green function method and indeterminate coefficients method. The same solution of shock absorber physical system form had been obtained by ... -
Pengaruh Ukuran Partikel Selulosa Pada Kemampuan Membran Separator dari TKKS-Fiber Glass dalam Memisahkan Hidrogen dan Oksigen Pada Elektrolizer Air
(Universitas Sumatera Utara, 2023)The fabrication and characterization of cellulose-based membranes of oil palm empty fruit bunches (TKKS)-fiber glass has been carried out as a membrane separator for H2 and O2 in the air electrolysis process. The cellulose ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoid dari Daun Tumbuhan Ridan (Nephelium maingayi Hiern)
(Universitas Sumatera Utara, 2023)The flavonoid compound had been isolated from the leaves of ridan (Nephelium maingayi Hiern). Isolation was carried out using maceration extraction method with methanol and methanol extract was re-extracted with ethyl ... -
Analisis Golongan Darah tidak Segar yang terdapat pada Plastik Menggunakan Spektroskopi Infra Merah Melalui Pendekatan Kemometrik
(Universitas Sumatera Utara, 2023)Blood is one identification that can be done to help in criminal cases. Research on the analysis of non-fresh blood groups found on plastic using infrared spectroscopy with a chemometric approach has been carried out. In ... -
Pengaruh Fraksi Volume Serat Sisal dengan Resin Epoksi terhadap Sifat Komposit
(Universitas Sumatera Utara, 2023)A research on the manufacture of sisal fiber composites using volume fraction was completed. This research was conducted to determine the effect of increasing the volume of sisal when it was made into composite with epoxy ... -
Keragaman Jamur Perairan Hutan Mangrove Belawan dan Potensinya dalam Mendekolorisasi Limbah Zat Warna
(Universitas Sumatera Utara, 2023)Mangrove forests are areas around the coast that are overgrown with mangrove plants and may also have a high diversity of microorganisms including fungi. This study is to determine the diversity of fungi in Belawan mangrove ... -
Sintesis Amida Asam Lemak Melalui Amidasi Metil Ester Palm Fatty Acid Destilate (PFAD) dengan Urea Menggunakan Radiasi
(Universitas Sumatera Utara, 2023)Synthesis of fatty acid amides by amidation of methyl esters of Palm Fatty Acid Distillate (PFAD) with urea using microwave radiation has been carried out. Methyl ester of PFAD can be made by esterification reaction between ... -
Identifikasi Mutasi dan Variasi Genetik Sars-Cov-2 di Provinsi Sumatera Utara dengan Metode Sanger Sequencing
(Universitas Sumatera Utara, 2023)Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2) is a group of Corona viruses from the genus Betacoronavirus. This zoonotic virus exhibits a high mutation rate, which increases the potential of the pathogen to ... -
Pertumbuhan Tomat Ceri (Solanum Lycopersicum Var. Cerasiforme) dengan Nutrisi Poc Kulit Bawang Merah Menggunakan Sistem Hidroponik Wick
(Universitas Sumatera Utara, 2023)The research of the growth of cherry tomatoes (Solanum lycopersicum var. Cerasiforme) with shallot skin liquid organic fertilizer (poc) nutrition using a wick hydroponic system. This study aims to analyze the growth response ...