Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 181-200 of 11420
-
Pembuatan Mi Kering Tersubstitusi Tepung Kelapa (Cocos nucifera) dan Tepung Mocaf dengan Penambahan Pektin dari Kulit Jeruk Manis (Citrus sinensis)
(Universitas Sumatera Utara, 2025)Sweet orange peel (Citrus sinensis) is an agro-industrial waste that contains high amounts of pectin and has potential as a natural food additive. Pectin functions as a chewing and texture-forming ingredient in processed ... -
Sintesis Isoamil Miristat dari Asam Miristat pada Variasi Konsentrasi Katalis Asam Sulfat dan Rasio Mol Asam Miristat dan Isoamil Alkohol Menggunakan Alat Pendispersi Homogen
(Universitas Sumatera Utara, 2025)Synthesis of isoamyl myristate from the reaction of esterification reaction between myristic acid and isoamyl alcohol catalyzed by sulfuric acid. catalyst using a homogeneous dispersing device at room temperature has been ... -
Bioekologi Ikan Cencen (Mystacoleucus marginatus, Valenciennes 1842) sebagai Dasar Upaya Pelestarian Sumberdaya Perikanan di Sungai Lau Belawan, Provinsi Sumatera Utara
(Universitas Sumatera Utara, 2025)Lau Belawan River has the potential for yellow-finned barb fish (Mystacoleucus marginatus, Valenciennes 1842). Ecologically, yellow-finned barb fish is a fish resources that must be preserved because it has the potential ... -
Sintesis Metil Oleat Menggunakan Katalis Deep Eutectic Solvents Pada Variasi Waktu Reaksi dan Kecepatan Pengadukan Pendispersi Homogen
(Universitas Sumatera Utara, 2025)Methyl oleate synthesis was carried out through an esterification reaction between oleic acid and methanol using a Deep Eutectic Solvent (DES) catalyst with a homogeneous disperser. The DES catalyst was obtained from a ... -
Analisis kandungan Logam berat Besi, Tembaga, dan Mangan Pada Road Dust Resuspension-Suspension (RDR-S) di Jalan Jamin Ginting
(Universitas Sumatera Utara, 2025)This study aims to determine the concentration and compare heavy metals in road dust Road Dust Resuspension-suspension (RDR-S) at two identical locations on Jamin Ginting Road in Medan. The analysis of metal concentrations ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Rasio Mol dan Katalis K2O/Zeolit Menggunakan Pengaduk Pendispersi Homogen
(Universitas Sumatra Utara, 2025)The synthesis of methyl oleate was carried out through an esterification reaction between oleic acid and methanol using a K₂O/zeolite catalyst and a homogenizing disperser stirrer. The K₂O/zeolite catalyst was prepared via ... -
Sintesis Isoamil Miristat dari Asam Miristat pada Variasi Waktu dan Kecepatan Pengadukan Menggunakan Alat Pendispersi Homogen
(Universitas Sumatera Utara, 2025)Synthesis of isoamyl myristate from the esterification reaction between myristic acid and isoamyl alcohol with sulfuric acid catalyst using a homogeneous dispersing tool at room temperature has been carried out at variations ... -
Algoritma Branch and Bound dengan Clustering Metode Sweep untuk Menyelesaikan Masalah Vehicle Routing Problem(VRP) (Studi Kasus: PT. Mitha Artha Keluarga)
(Universitas Sumatera Utara, 2025)The vehicle routing problem is a combinatorial optimization problem that aims to determine the most efficient route for a number of vehicles to deliver goods to a number of bases. PT Mitha Artha Keluarga, as an authorized ... -
Sintesis Basa Schiff melalui Kondensasi Selulosa Dialdehida dari Tandan Kosong Kelapa Sawit dengan Etilendiamina sebagai Wet Strength Agent (WSA)
(Universitas Sumatera Utara, 2025)Cellulose was isolated from empty palm bunches (TKKS) using a combination of 3.5% HNO3, 2% NaOH, Na2SO3, 1.75% NaOCl, and 10% H2O2. A total of 18.167 g of cellulose was obtained, which corresponds to 24.22% of the initial ... -
Isolasi Dan Identifikasi Golongan Senyawa Flavonoida Dari Kulit Batang Bakau Api – Api (Avicennia marina (Forssk.) Vierh.)
(Universitas Sumatera Utara, 2025)Isolation and identification of flavonoid compounds from the bark of the api- api mangrove (Avicennia marina (Forssk.) Vierh.) have been carried out through several stages, namely maceration extraction with methanol ... -
Fortifikasi Bayam Merah (Amaranthus tricolor L.) sebagai Sumber Nitrogen dan Zat Besi pada Nata de Leri Ketan Putih dalam Mencegah Anemia
(Universitas Sumatera Utara, 2025)Anemia is recognized as a global health issue primarily caused by iron deficiency. A potential strategy to address this problem has been identified in food fortification. In this research, the potential of red spinach ... -
Sintesis dan Karakterisasi Adsorben Karbon Aktif Hydrilla Verticillata/Kitosan/Tio2 untuk Menyerap Cu, Pb, Zn, Cr dan Fe dalam Limbah Cair dengan Metode Fotokatalis
(Universitas Sumatera Utara, 2025)Environmental pollution by heavy metals is a serious problem that requires effective solutions. One promising method is the adsorption method using biomass-based activated carbon. Hydrilla verticillata-activated carbon was ... -
Karakterisasi Edible Coating Berbahan Pektin/Kitosan/Ekstrak Daun Kenikir (Cosmos Caudatus) Untuk Meningkatkan Umur Simpan Pada Buah Tomat
(Universitas Sumatera Utara, 2025)An edible coating based on pectin, chitosan, and the addition of Cosmos caudatus (kenikir) leaf extract was developed in this study. The aim of lhe research was to determine the characteristics of the edible coating and ... -
Sintesis Metil Oleat dari Esterifikasi Asam Oleat dan Metanol pada Perbandingan Rasio Mol dan Berat Enzim Lipase Menggunakan Peralatan Pendispersi Homogen
(Universitas Sumatera Utara, 2025)The synthesis of methyl oleate from oleic acid and methanol through esterification has been performed using homogeneous dispersion equipment and lipase enzyme as a catalyst. This study focuses on the effect of variations ... -
Formulasi Dan Karakterisasi Sediaan Essence Kitosan Pada Sheet Mask Sebagai Antibakteri Propionibacterium Acnes
(Universitas Sumatera Utara, 2025)Research has been carried out on the use of chitosan in the formulation of a essence sheet mask as an antibacterial. Sheet masks are one of the cosmetics that are widely used by consumers because they contain essence which ... -
Evaluasi Profil Fisikokimia dan Fitokimia Kombucha Berbasis Goji Berry (Lycium barbarum)
(Universitas Sumatera Utara, 2025)Kombucha is traditionally produced using tea; however, it can also be formulated from a variety of alternative substrates, including fruits, herbs, vegetables, and spices. This study investigated the use of goji berries ... -
Analisis dan Karakterisasi pada Scaffold Karbonat Hidroksiapatit (CHA) Berbahan Dasar Biowaste Cangkang Kerang Darah (Anadara granosa)
(2025)Utilization of shellfish waste (Biowaste) as a source of calcium in Carbonate Hydroxyapatite (CHA) Scaffolds that can provide an alternative in environmentally friendly bone tissue engineering. This study aims to make CHA ... -
Analisis Sensitivitas pada Integer Linear Programming Menggunakan Metode Branch and Bound untuk Optimasi Jumlah Produksi Seragam Sekolah pada UD Hesty
(Universitas Sumatera Utara, 2025)UD Hesty is a garment company that produces school uniforms and faces challenges in determining the optimal production quantity. These challenges are due to limited raw materials. Inaccurate decisions can lead to inefficient ... -
Efek Over Current Pada Kabel Penghantar Listrik Jenis Tembaga (Cu) Berisolasi Polivinyl Chloride (PVC) terhadap Inisiasi Penyebab Kebakaran
(Universitas Sumatera Utara, 2025)This study aims to analyze the physical and chemical effects of electromigration failure caused by overcurrent in copper (Cu) cables as a potential initiator of electrical fires. Testing was conducted on PVC-insulated ... -
Pembuatan dan Karakterisasi Superabsorben Polimer Berbasis Natrium Karboksimetil Selulosa dan Hidroksietil Metil Selulosa dengan Asam Ftalat Sebagai Agen Pengikat Silang
(Universitas Sumatera Utara, 2025)This study examines the process of making and characterizing superabsorbent polymer (SAP) based on Sodium Carboxymethyl Cellulose (Na-CMC) and Hydroxyethyl Methyl Cellulose (HEMC). The manufacture of superabsorbent polymer ...