Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 741-760 of 11355
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Profil Kandungan Beta Glukan Jamur Polyporales di Hutan Batu Katak, Sumatera Utara
(Universitas Sumatera Utara, 2024)Polyporales fungi produce active compounds and secondary metabolites that have a variety of properties, such as beta glucan. Beta glucan is part of the cell walls of bacteria, plants, algae, cereals and fungi. Beta glucan ... -
Studi tentang Kestabilan Model Sird-T dengan Kriteria Routh-Hurwitz pada Penyebaran Suatu Penyakit Menular
(Universitas Sumatera Utara, 2024)The goal of this investigation is to explore how the SIRD-T mathematical model represents the spread of measles, with a focus on identifying a stable equilibrium comprising disease-free and endemic states. It assesses ... -
Pembuatan Green Diesel dari Perengkahan Katalitik Miyak Jelantah Menggunakan Katalis Bentonite
(Universitas Sumatera Utara, 2024)Until today, 86% of the world's energy is still supplied from fossil fuel. Fossil fuel are an energy source that will depleted, so it is necessary to look for alternative energy sources that are sustainable and cheap. ... -
Histologi Hati Tikus Wistar (Rattus Norvegicus L.) Jantan yang Diberi Ekstrak Etanol Daun Sambung Nyawa (Gynura Procumbens [Lour.] Merr.) setelah Diinduksi Aloksan Skripsi
(Universitas Sumatera Utara, 2024)The ethanol extract of Sambung nyawa leaves has the potential to reduce liver histopathology and blood sugar levels generated by alloxan in rats (Rattus norvegicus L.). The present study investigates the impact of ... -
Pengaruh Penambahan Serbuk Daun Bangun-Bangun (Coleus Ambonicus) pada Pelet Komersil terhadap Pertumbuhan dan Kelangsungan Hidup Ikan Patin (Pangasius Hypopthalmus)
(Universitas Sumatera Utara, 2024)Patin fish (Pangasius hypopthalmus) is one of the freshwater fisheries commodities with high economic value. Patin fish belonging to the Pangasidae family is generally found in large rivers, especially in Sumatra. The ... -
Pengaruh Variasi Konsentrasi NaOH terhadap Nilai Kalor Briket Arang Tandan Kosong Kelapa Sawit
(Universitas Sumatera Utara, 2024)Research has been conducted on the effect of NaOH concentration on the calorific value of oil palm empty fruit bunch charcoal briquettes. NaOH solution is used as a pretreatment material for oil palm empty fruit bunches ... -
Pengaruh Penambahan Asam Borat dan Boraks sebagai Bahan Penghambat Api pada Pembuatan Papan Komposit Kayu Plastik dari Polipropilena-Serbuk Pelepah Pinang
(Universitas Sumatera Utara, 2024)This study examines the effect of adding boric acid and borax as flame retardants on the manufacture of wood plastic composite from polypropylene (PP)- areca nut frond powder (SPP). The research was carried out in four ... -
Hubungan Logam Berat Timbal (Pb) dan Kadmium (Cd) terhadap Keanekaragaman Fitoplankton di Sungai Belawan
(Universitas Sumatera Utara, 2024)The Belawan River is one of the rivers in the province North Sumatra which crosses at Deli Serdang Regency and Medan City. At the moment, the river is used for residential and industrial activities. Waste that is disposed ... -
Kepadatan Populasi dan Pola Pertumbuhan Kerang Darah (Anadara Granosa) di Pantai Cemara Kembar, Desa Sei Nagalawan, Kabupaten Serdang Berdagai, Sumatera Utara
(Universitas Sumatera Utara, 2024)The waters of Cemara Kembar beach are extensive waters located in Serdang Berdagai Regency. This beach is a tourist area and is close to the river mouth. This research aims to determine population density, growth patterns ... -
Respon Pertumbuhan Jagung Manis (Zea Mays L.) Akibat Pemberian Pupuk Organik Cair (POC) Kulit Buah Durian (Durio Zibethinus Murr.)
(Universitas Sumatera Utara, 2024)This study aims to determine the response of sweet corn (Zea mays L.) plants to the application of durian peel liquid organic fertilizer (POC) and determine the best concentration of durian peel liquid organic fertilizer ... -
Uji Efektivitas Nanoherbal Daun Gagatan Harimau (Vitis Gracilis Wall.) terhadap Histomorfometri Aorta Jantung Tikus Wistar (Rattus Norvergicus L.) Jantan Model Diabetes Mellitus yang Diinduksi Aloksan
(Universitas Sumatera Utara, 2024)The phytochemical screening of gagatanharimau revealed the presence of secondary metabolites, which have the potential to be used as herbal medicine for improving organ structure. This research aims to analyze the effectiveness ... -
Keragaman Jamur Endofit dari Akar Tanaman Durian (Durio zibethinus Murr.) dan Potensinya sebagai Penghasil Antimikroba
(Universitas Sumatera Utara, 2024)Durian (Durio zibethinus Murr.) is extensively consumed and commercially exploited due to its beneficial bioactive compounds. To sustain durian cultivation, one approach involves exploring the potential of endophytic ... -
Potensi Bakteri dari Tempat Pelelangan Ikan (TPI) Tanjung Beringin Kabupaten Serdang Bedagai dalam Mendegradasi Minyak Solar
(Universitas Sumatera Utara, 2024)Diesel oil degrading bacteria could be found in various habitats in the marine environment, including in the waters around fish auction sites (TPI). The high level of shipping activity at the Tanjung Beringin Fish ... -
Efektivitas Nanoherbal Haramonting (Rhodomyrtus Tomentosa (Aiton) Hassk.) terhadap Gambaran Histologi Paru-Paru Tikus (Rattus Norvegicus L.) yang Dipaparkan Allethrin
(Universitas Sumatera Utara, 2024)Electric mosquito repellent is one of the factors that can increase the levels of free radicaIs, it can affect lung heaIth because it contains of allethrin. Free radical levels can be reduced by administering antioxidant ... -
Deteksi Molekuler Acute Hepatopancreatic Necrosis Disease (AHPND) pada Komoditas Udang Vannamei (Litopenaeus Vannamei) di Sumatera Utara
(Universitas Sumatera Utara, 2024)Acute Hepatopancreatic Necrosis Disease (AHPND) is a disease registered by The Office International des Epizooties (OIE). AHPND causes a major problem in shrimp cultivation production in the world. Vannamei shrimp ... -
Uji Aktivitas Antimikroba Ekstrak Daun Andaliman (Zanthoxylum Acanthopodium DC.) terhadap Beberapa Isolat Mikroba Patogen Klinis
(Universitas Sumatera Utara, 2024)Andaliman (Zanthoxylum acanthopodium DC.) is a typical plant found in the North Sumatra region. andaliman's ability to produce secondary metabolite compounds can be used as a natural medicinal ingredient. One important ... -
Khamir Endofit Buah Sirsak (Annona Muricata Linn.) dan Kemampuannya Menghasilkan Asam Organik Penghambat Aspergillus Flavus dan Aflatoksin yang Dihasilkannya
(Universitas Sumatera Utara, 2024)Soursop is a habitat for several species of endophytic yeasts that potential to produce organic acids. The aim of this study was to study endophytic yeasts of soursop i.e. Rhodotorula mucilaginosa, Rhodotorula sp., ... -
Populasi Khamir Endofit Buah Durian (Durio Zibethinus Murr.) dan Potensinya Menghasilkan Asam Indol Asetat dan Melarutkan Fosfat
(Universitas Sumatera Utara, 2024)Endophytic yeast of montong durian fruit from Langkat Regency, North Sumatera has potential to produce indole acetic acid and dissolve phosphate. A total of 25 grams of durian flesh fruit in a 1000 ml flask was added ... -
Analisis Perbandingan Metode Pohon Keputusan Quest dan Chaid Dalam Menilai Kinerja Bank Umum Konvensional
(Universitas Sumatera Utara, 2024)The performance of conventional commercial banks can be determined from several parameters included in the RGEC analysis (Risk Profile, Good Corporate Governance, Earnings, Capital). This is done to help all parties ... -
Implementasi Python dan Analytical Network Process (ANP) dalam Pengambilan Keputusan
(Universitas Sumatera Utara, 2024)Decision making in a mathematical context often involves high complexity, especially when there are many interrelated criteria and alternatives. This research aims to implement the Analytical Network Process (ANP) method ...