Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 261-280 of 11424
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Implementasi Model Suku Bunga Vasicek dan Cox-Ingersoll-Ross pada Perhitungan Dana Pensiun dengan Metode Aggregate Cost
(Universitas Sumatera Utara, 2025)Uncertainty in interest rates is a major challenge in the calculation of long-term pension funds. To address this, the present study implements the stochastic interest rate models of Vasicek and Cox-Ingersoll-Ross (CIR) ... -
Isolasi Fragmen Gen pi-ta Pada Padi Siporang (Oryza sativa L.) dari Tapanuli Selatan, Sumatera Utara Sebagai Gen Ketahanan Penyakit Blas
(Universitas Sumatera Utara, 2025)Siporang rice (Oryza sativa L.) from South Tapanuli Regency, North Sumatra, exhibits resistance to blast disease. This resistance is presumed to be associated with the presence of R genes involved in the plant defense ... -
Potensi Pupuk Hayati Cair FertoMAX dalam Menghambat Infeksi Colletotrichum gloeosporioides Penyebab Antraknosa pada Tanaman Cabai Merah (Capsicum annum L.)”
(Universitas Sumatera Utara, 2025)FertoMAX liquid biofertilizer developed by the Institue Oil Palm Research Institute (IOPRI) can be used to increase growth and to control pathogenic fungi in cultivated plants such as red chili plants (Capsicum annum L.). ... -
Kepadatan, Hubungan Panjang-Berat dan Tingkat Kematangan Gonad Ikan Gulamah (Johnius trachycephalus) di Perairan Pantai Labu Kabupaten Deli Serdang
(Universitas Sumatera Utara, 2025)Gulamah fish (Johnius trachycephalus) is one of fish type that lives on Labu Beach which is often consumed by people around the beach. This study aims to determine the relationship between the length and the weight, the ... -
Isolasi Gen Pi1 Penyandi Kelas Protein NBS-LRR pada Padi Siporang (Oryza sativa var. Siporang) dari Sumatera Utara sebagai Gen Ketahanan Patogen
(Universitas Sumatera Utara, 2025)Siporang is a superior local rice variety from North Sumatra known to be resistant to blast disease. Previous studies have successfully identified several blast resistance (R) genes in Siporang. However, no research has ... -
Keanekaragaman Jenis Aves di Kawasan Arboretum Universitas Sumatera Utara, Kwala Bekala, Deli Serdang, Sumatera Utara
(Universitas Sumatera Utara, 2025)The diversity of birds (Aves) in Arboretum at Universitas Sumatera Utara has potential to serve as an enviromental bioindicator and supports as a conservation area for bird species conservation. This research was conducted ... -
Metode Partial Least Square-Structural Equation Modeling (PLS-SEM) dalam Analisis Kepuasan Mahasiswa Universitas Sumatera Utara terhadap Layanan SATU USU
(Universitas Sumatera Utara, 2025)SATU USU is a platform that integrates various digital services at Universitas Sumatera Utara into a single portal, facilitating students in accessing academic and administrative information. Student satisfaction with the ... -
Kajian Metode Markowitz dalam Optimasi Portofolio Saham Sektor Perbankan (Studi PT Bursa Efek Indonesia)
(Universitas Sumatera Utara, 2025)The Markowitz method, also known as the Mean-Variance Portfolio Theory, is used to determine a portfolio that provides optimal returns by minimizing risk. This study utilizes historical closing price data of six banking ... -
Sintesis dan Karakterisasi Unjuk Kerja Sodium Titanat (Na2Ti6O13) dengan Variasi Suhu Kalsinasi untuk Material Aktif Anoda Baterai Ion Sodium
(Universitas Sumatera Utara, 2025)In this study, the synthesis and performance characterization of Sodium Titanate (Na₂Ti₆O₁₃) were carried out to evaluate its potential as an anode material for sodium-ion batteries, with particular emphasis on the effect ... -
Penerapan Model Vector Autoregressive (VAR) pada Analisis Pengaruh Makroekonomi terhadap Profitabilitas PT Bank Rakyat Indonesia Tbk
(Universitas Sumatera Utara, 2025)The Vector Autoregressive (VAR) model is a multivariate approach to time series analysis used to evaluate the dynamic relationship between endogenous variables in a system. However, if there is evidence of a cointegration ... -
Penerapan Metode Fuzzy Mamdani dan Fuzzy Sugeno dalam Penentuan Jumlah Produksi Produk Pakaian Konveksi Mutiara Naga
(Universitas Sumatera Utara, 2025)Konveksi Mutiara Naga faces challenges in optimizing the production quantity of gamis (Muslim dresses), often resulting in either excess or shortage of stock. These issues arise from inaccurate production planning that ... -
Pemanfaatan Biosaka terhadap Produktivitas dan Kadar Antioksidan Cabai Merah Keriting (Capsicum annum L.)
(Universitas Sumatera Utara, 2025)Curly red chili (Capsicum annuum L.) is an important agricultural commodity, valued not only for its high economic potential but also for its richness in antioxidant compounds beneficial to human health. To enhance both ... -
Analisis Kandungan Logam Berat Timbal Pada Akar, Batang Dan Daun Mangrove Avicennia marina di Kampung Nipah, Serdang Bedagai, Sumatera Utara.
(Universitas Sumatera Utara, 2025)Kampung Nipah is one of the coastal areas located in Serdang Bedagai Regency, North Sumatra. The waters in the Kampung Nipah area are widely used for various activities that have the potential to affect water quality due ... -
Analisis Kandungan Logam Berat Timbal dan Kadmium pada Kepah Polymesoda erosa di Perairan Pantai Mangrove Kabupaten Serdang Bedagai, Sumatera Utara
(Universitas Sumatera Utara, 2025)The mangrove coastal waters of Serdang Bedagai Regency, North Sumatra, are characterized by their high biodiversity, serving as habitats for various species, including the economically valuable bivalve Polymesoda erosa. ... -
Potensi Jamur Penghasil Enzim Lakase dari Lantai Hutan dalam Mendekolorisasi Zat Warna Azo (Methyl Orange)
(Universitas Sumatera Utara, 2025)Environmental pollution caused by industrial waste, particularly from the textile industry, poses a serious threat due to the persistence and toxicity of synthetic dyes such as azo compounds. A sustainable and eco-friendly ... -
Food Of Long Tailed Monkey (Macaca fascicularis) In Sicanang Mangrove Ecosistem Based On The Knowledge Of Local Fisherman
(Universitas Sumatera Utara, 2025)This study aims to determine and to analyze the food feeded by long tailed monkey (Macaca fascicularis) in Sicanang mangrove ecosystem. The study was based on the knowledge of local fishermen. A qualitative data was obtained ... -
Identifikasi Jenis dan Prevalensi Endoparasit Gastrointestinal pada Gajah Sumatera (Elephas maximus sumatranus) di Taman Nasional Gunung Leuser Resor Tangkahan
(Universitas Sumatera Utara, 2025)The population of sumatran elephants (Elephas maximus sumatranus) continues to face significant threats due to limited human knowledge of their behavior in the wild and the growing number of disturbances. One contributing ... -
Pengaruh Pemberian Ekstrak Jamur Tiram (Pleurotus ostreatus) Terhadap Morfologi Dan Histologi Hati Tikus (Rattus norvegicus L.) Jantan Diberi Pakan Tinggi Lemak.
(Universitas Sumatera Utara, 2025)High-fat diet can cause hyperlipidemia which causes to liver damage risk. This study aims to analyze the effect of oyster mushroom (Pleurotus ostreatus) extract on liver morphology and histology as well as liver enzyme ... -
Implikasi Penggunaan Ekstrak Jamur Tiram (Pleurotus ostreatus) Sebagai Antihiperlipid Terhadap Histologi Testis Pada Tikus (Rattus norvegicus)
(Universitas Sumatera Utara, 2025)Animal testes with hyperlipidemia will affect the number of Leydig cells and spermatogenic cells, namely spermatogonia, primary spermatocytes and spermatids. Oyster mushroom extract (Pleurotus ostreatus) contains bioactive ... -
Potensi Jamur Sedimen Kawasan Hutan Mangrove Belawan Dalam Mendegradasi Plastik Jenis Low Density Polyethylene (LDPE)
(Universitas Sumatera Utara, 2025)LDPE is a widely used type of plastic due to its low cost and versatility; however, its resistance to degradation has led to serious environmental accumulation issues. This study aims to determine the potential of fungi ...