Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 281-300 of 11449
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Pengaruh Daya Lampu LED terhadap Pertumbuhan Bayam Merah (Amaranthus tricolor L.) pada Sistem Hidroponik Indoor
(Universitas Sumatera Utara, 2025)Red spinach (Amaranthus tricolor L.) is one of the vegetable plants that is rich in nutritional content compared to other types of spinach that can be harvested at the age of 30 days. This study is about the Effect in LED ... -
Perkembangbiakan Larva Nyamuk (Aedes aegypti L.) pada Limbah Tempe yang Telah Diberi Perlakuan Fotokatalitik Menggunakan ZnO
(Universitas Sumatera Utara, 2025)Tempeh wastewater from the tempeh industry has become a serious environmental problem, particularly in proper wastewater treatment, such as Tanjung Anom Village, North Sumatra. Tempeh wastewater contains high concentrations ... -
Karakterisasi BaFe12O19 pada Penambahan Y2O3 untuk Penyerap Gelombang Mikro
(Universitas Sumatera Utara, 2025)In this study, the main focus is on the preparation and characterization of BaFe12O19 with the addition of Y2O3. The variation of Y2O3 composition used is 0%, 3% and 5%. This research was conducted to show how effective ... -
Uji Efektivitas Nanoherbal Daun Gagatan Harimau (Paraboea leuserensis B.L Burtt) terhadap Histologi Pankreas pada Tikus Wistar (Rattus norvegicus L.) Jantan yang Diinduksi Doksorubisin
(Universitas Sumatera Utara, 2025)Doxorubicin is a chemotherapeutic drug known for its cytotoxic effects on normal tissues, including the pancreas, where it induces oxidative stress and β-cell necrosis in the islets of Langerhans, disrupting insulin secretion ... -
Implementasi Metode Fuzzy Goal Programming dalam Optimasi Pengiriman Barang pada PT. Logistik Ekspresindo Utama Medan
(Universitas Sumatera Utara, 2025)PT. Logistik Ekspresindo Utama is a freight forwarding company that faces signi f icant challenges in distribution efficiency, particularly due to frequent delivery delays and unfulfilled customer demand resulting from ... -
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 ...