Browsing Faculty of Mathematics and Natural Sciences by Issue Date
Now showing items 1-20 of 11533
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Aktivitas Berang-Berang Cakar Kecil (Aonyx cinereus) di Kebun Binatang Rahmat Zoo and Park, Desa Bengabing, Pegajahan, Sumatera Utara
(Universitas Sumatera Utara, 2026)This study aims to examine the activity patterns of small-clawed otters (Aonyx cinereus) maintained at Rahmat Zoo and Park, Bengabing Village, Pegajahan, North Sumatra. From a biological perspective, the study of daily ... -
Isolasi dan Sekuensing Fragmen cDNA Gen pi-d2 sebagai Ketahanan terhadap Penyakit Blas pada Padi Sigudang (Oryza sativa L.) dari Sumatera Utara
(Universitas Sumatera Utara, 2026)Rice blast disease caused by the fungus Pyricularia oryzae is one of the major threats to rice production. Several resistant genes have been identified to confer resistance against blast disease, including the pi-d2 gene. ... -
Isolasi dan Sekuensing Fragmen cDNA Gen pi-ta sebagai Ketahanan terhadap Penyakit Blas pada Padi (Oryza sativa L.) Sigudang dari Sumatera Utara
(Universitas Sumatera Utara, 2026)Blast disease caused by Pyricularia oryzae is one of the main threats to rice production in Indonesia. Several local rice varieties in North Sumatra, including the Sigudang cultivar, showed resistant to blast disease. ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Eukaliptus (Eucalyptus grandis W. Hill ex Maiden)
(Universitas Sumatera Utara, 2026)The isolation and identification of flavonoid compounds obtained from the bark of eucalyptus tree (Eucalyptus grandis W. Hill ex Maiden) was carried out using several methods, namely maceration extraction with methanol ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Kesambi (Schleichera oleasa (Lour.) Oken)
(Universitas Sumatera Utara, 2026)The isolation and identification of flavonoid compounds from the stem bark of kesambi (Schleichera oleosa (Lour.) Oken) were carried out through several stages. The research process began with maceration extraction using ... -
Kepadatan Tikus dan Ektoparasitnya di Pemukiman Padat Penduduk di Kelurahan Mesjid, Kecamatan Medan Kota, Kota Medan, Sumatera Utara
(Universitas Sumatera Utara, 2026)This study was conducted to determine the types of rats and their ectoparasites, the relative density (trap success) of rats, the specific flea index (SFI), the prevalence, and the intensity of ectoparasite infestation ... -
Pembuatan Karbon Aktif dari Kulit Singkong (Manihot Utilissima) untuk Penurunan Kadar Logam Besi (Fe) pada Air Sumur Bor
(Universitas Sumatera Utara, 2026)Borehole water in some areas often contains iron metal (Fe) that exceeds the threshold set by Permenkes No. 2 Year 2023, which is 0.2 mg/L. Excess iron content can reduce water quality and cause health problems. This study ... -
Modifikasi Pati Sukun (Artocarpus altilis) Teroksidasi Menggunakan Natrium Bromat
(Universitas Sumatera Utara, 2026)Modification of breadfruit starch (Artocarpus altilis) into carboxylated starch through oxidation reaction using sodium bromate as an oxidizer has been carried out. The modification was performed with a mass ratio of starch ... -
Studi Komparatif Random Forest dan Regresi Logistik Elastic Net pada Klasifikasi Status Pulang FKTP BPJS Kesehatan: Kajian F1-Score, PR-AUC, dan Brier Score
(Universitas Sumatera Utara, 2026)This study analyzes and compares the performance of Random Forest and Elastic Net Logistic Regression (SAGA solver) for classifying patient discharge status at BPJS Kesehatan Primary Care Facilities (FKTP). The dataset is ... -
Isolasi dan Uji Aktivitas Antijamur Ekstrak Etanol dan N-Heksan Tanaman Ciplukan (Physalis Angulata L.) terhadap Jamur Patogen Klinis
(Universitas Sumatera Utara, 2026)Ciplukan (Physalis angulata L.) is a medicinal plant that contains secondary metabolites with potential as an alternative to synthetic antibiotics for antifungal therapy. This study aimed to determine the phytochemical ... -
Keanekaragaman Makrozoobenthos di Sungai Tanjung Pura, Kabupaten Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2026)The Tanjung Pura River, Langkat Regency, North Sumatra, is an aquatic ecosystem experiencing anthropogenic pressure from livestock farming activities, former sand dredging, and domestic waste. This study aims to analyze ... -
Uji Aktivitas Antimikroba Ekstrak Daun Bangun-bangun (Coleus Amboinicus L.) terhadap Beberapa Isolat Mikroba Patogen Klinis
(Universitas Sumatera Utara, 2026)Coleus amboinicus Lour., commonly known in North Sumatra as “daun bangun-bangun,” is an aromatic plant from the Lamiaceae family traditionally used as an anti-infective, anti-inflammatory, and wound-healing agent. Its ... -
Potensi Khamir Endofit Daging Buah Nanas Madu (Ananas Comosus) Sebagai Penghasil Asam Indol Asetat (IAA) dan Pelarut Fosfat
(Universitas Sumatera Utara, 2026)This study aims to obtain endophytic yeasts isolated from pineapple (Ananas comosus) fruit flesh and to evaluate their potential for indole acetic acid (IAA) production and phosphate solubilization. The yeasts were ... -
Keragaman dan Potensi Selulolitik Bakteri dan Jamur dari Saluran Pencernaan Oryctes rhinoceros L.
(Universitas Sumatera Utara, 2026)The gut of insects is the natural habitat of various microbes that have the ability to degrade cellulose, which is the main component of plant walls. Oryctes rhinoceros L., is one of the pests in oil palm and is thought ... -
Inovasi Kalorimeter Berbasis IoT untuk Dekonstruksi Nilai Kalor Bahan Bakar Minyak Hasil Pirolisis Limbah Plastik
(Universitas Sumatera Utara, 2026)This study aims to design and develop an Internet of Things (IoT)-based calorimeter system to measure the calorific value of pyrolysis oil fuel derived from plastic waste, specifically high-density polyethylene (HDPE). ... -
Deteksi Gen CehA Pengkode Enzim Karbofuran Hidrolase pada Bacillus cereus Strain HS06
(Universitas Sumatera Utara, 2026)The cehA gene is one of the genes encoding the carbofuran hydrolase (KH) enzyme, which plays a role in the biodegradation of the insecticide carbofuran. This study aimed to detect the presence of the cehA gene in Bacillus ... -
Analisis Ekspresi Protein Apoptosis pada Tikus (Rattus norvegicus) Hiperglikemia dengan Pemberian Ekstrak Etanol Bawang Batak (Allium Chinense G. Don)
(Universitas Sumatera Utara, 2026)Diabetes mellitus (DM) is a metabolic disorder characterized by chronic hyperglycemia resulting from inadequate insulin secretion and/or insulin resistance. It is currently crucial to explore new therapeutic approaches for ... -
Implementasi Monitoring dan Kontrol Otomatis Berbasis IoT pada Penampungan Gas Hasil Pirolisis Sampah Plastik Multilayer
(Universitas Sumatera Utara, 2026)The issue of plastic waste, particularly multilayer plastic, continues to escalate due to its highly non-biodegradable nature. Pyrolysis offers an effective method for converting plastic waste into gas that can be utilized ... -
Karakterisasi Enzim Karbofuran Hidrolase dari Bacillus Cereus Strain HS06 dan Bacillus Paramycoides Strain BSAS15
(Universitas Sumatera Utara, 2026)Bacillus cereus strain HS06 and Bacillus paramycoides strain BSAS15 are two bacteria known to have the ability to degrade carbofuran, an active compound used in pesticides which are very dangerous to the environment. This ... -
Implementasi Sistem Keamanan Pintar Berbasis Internet Of Things Dengan Esp32-Cam, Pir, Dan Esp32 Mode Manual-Otomatis Menggunakan Energi Surya
(Universitas Sumatera Utara, 2026)The use of conventional CCTV systems is considered inefficient for security applications due to manual monitoring requirements, the need for additional guards, the absence of real-time alerts, and strong dependence on grid ...