Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 281-300 of 11425
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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 ... -
Potensi Bakteri Sedimen Kawasan Hutan Mangrove Belawan dalam Mendegradasi Plastik Jenis Low Density Polyethylene (LDPE)
(Universitas Sumatera Utara, 2025)The accumulation of non-biodegradable plastic waste has led to significant environmental concerns, particularly in the mangrove forest of Belawan, North Sumatra. The objective of this study is to ascertain the biodegradation ... -
Keanekaragaman Plankton di Sungai Wampu Tanjung Pura Kabupaten Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2025)Wampu River has abundant natural resources located at Langkat Regency, North Sumatra Province. There are activities surrounding the river that cause changes in the physical-chemical factors of the waters which affects to ... -
Makrozoobentos Sebagai Bioindikator Kualitas Air di Sungai Belawan
(Universitas Sumatera Utara, 2025)This study aims to analyze macrozoobenthos as bioindicators of water quality in Belawan River, Medan City. Belawan River is one of the main rivers that crosses residential, industrial, and aquaculture areas, so it is ... -
Analisis Kandungan Logam Berat Kadmium (Cd) dan Timbal (Pb) pada Kerang Bulu Anadara antiquata Di Perairan Pantai Mangrove, Kabupaten Serdang Bedagai, Sumatera Utara
(Univeritas Sumatera Utara, 2025)Mangrove Beach is one of the beaches with great natural potential and is located in Serdang Bedagai Regency, North Sumatra. The waters of Mangrove Beach are widely used for various community activities that have the ... -
Analisis Perbandingan Metode Mamdani Fuzzy Inference System dengan Regresi Berganda dalam Estimasi Konsumsi Energi Listrik di Provinsi Sumatera Utara
(Universitas Sumatera Utara, 2025)The continuously increasing demand for electricity presents a significant challenge in energy supply, particularly because electricity cannot be stored on a large scale. Therefore, accurate estimation methods are ... -
Analisis Sensitivitas Model Fuzzy Goal Programming dalam Optimisasi Laporan Keuangan PT Kereta Api Indonesia (Persero)
(Universitas Sumatera Utara, 2025)Financial statements are an important tool for assessing a company's performance and future prospects. In the transportation sector, particularly PT Kereta Api Indonesia (Persero), optimizing financial statements is crucial ... -
Hubungan Nutrien Amonia (NH3), Nitrat (NO3) Dan Fosfat (PO4) Terhadap Keanekaragaman Fitoplankton di Sungai Belawan
(Universitas Sumatera Utara, 2025)Sungai Belawan is one of the rivers located in Deli Serdang Regency and Medan City, North Sumatra, Indonesia. The diversity of phytoplankton and the nutrient content of ammonia, phosphate, and nitrate affect the water ... -
Analisis Keanekaragaman Ikan Di Sekitar Keramba dan Non Keramba Jaring Apung Di Danau Toba, Kecamatan Pangururan, Kabupaten Samosir, Sumatera Utara
(Universitas Sumatera Utara, 2025)This study aims to analyze the diversity of fish species and environmental factors that affect on fish at different ecosystems. The diversity of fish at of floating (KJA) and non- floating net in Toba Lake, Pangururan ... -
Kepadatan Populasi Ikan Oskar (Amphilophus citrinellus) di Danau Toba, Kecamatan Simanindo, Kabupaten Samosir
(Universitas Sumatera Utara, 2025)Oskar fish (Amphilophus citrinellus) is an introduced species known that aggressive behaviour, high adaptability, and reproductive potential. Its population tended to increase in Toba Lake, particularly in Simanindo District ... -
Makrofauna Tanah sebagai Spesies Bioindikator pada Areal Tanaman Jagung (Zea mays) yang Diberi Limbah Cair Pabrik Kelapa Sawit sebagai Pupuk
(Universitas Sumatera Utara, 2025)Soil macrofauna are soil animals that live the surface at in the soil that have a body length of biggh than 2 mm. This research was conducted in corn area Samosir Regency. The material used was palm oil mill effluent as ... -
Keanekaragaman Ikan dan Hubungannya dengan Faktor Fisik-Kimia Air di Danau Toba, Kecamatan Pangururan, Kabupaten Samosir, Sumatera Utara
(Universitas Sumatera Utara, 2025)Fish diversity is an important indicator in assessing the health of aquatic ecosystems. The ecosystem reflects the balance between species and environmental conditions. Toba Lake is the largest volcanic lake in Southeast ... -
Uji Bioaktivitas Antidiabetes dan Identifikasi Senyawa Fenolik dari Fraksi Etil Asetat Kulit Buah Kembang Merak (Caesalpinia pulcherrima (L.) Sw.)
(Universitas Sumatera Utara, 2025)Peacock flower plant (Caesalpinia pulcherrima (L.) Sw.) is traditionally used in medicine and is thought to be influenced by the presence of secondary metabolites. This study aims to test the antidiabetic bioactivity ... -
Sistem Pengontrolan Pemberian Pakan Dan Kualitas Air Kolam Budidaya Ikan Nila Berbasis Iot
(Universitas Sumatera Utara, 2025)Tilapia fish farming is highly dependent on water quality and timely feeding. This research aims to design and implement an automated Internet of Things (IoT)-based system capable of controlling pond water quality and ... -
Implementasi Metode Fuzzy Mamdani dan Fuzzy Tsukamoto dalam Penentuan Durasi Fase Lampu Lalu Lintas di Persimpangan Jalan Kota Medan
(Universitas Sumatera Utara, 2025)The triple intersection of Jalan Jamin Ginting and Jalan Dr. Mansyur in Medan City frequently experiences congestion due to the use of static-duration traffic lights, which fail to account for variations in vehicle density ... -
Pemanfaatan Sekam Padi dan Pasir Besi Alam Sebagai Material Penyerap Dengan Metode Solid State Reaction
(Universitas Sumatera Utara, 2025)The synthesis and characterization of rice husk and natural iron sand as microwave absorbing materials have been successfully carried out. This research was conducted using the Solid State Reaction Method, where the ... -
Aplikasi Logika Fuzzy dalam Produksi Roti menggunakan Metode Mamdani dan Tsukamoto
(Universitas Sumatera Utara, 2025)Determining the appropriate amount of production is essential to maintain a balance between market demand and inventory. PT Roti Ganda Siantar, as one of the leading bread producers in North Sumatra, requires a decision ... -
Potensi Bakteri Asam Laktat (BAL) dari Larva Hermetia illucens dalam Menghambat Methicillin-resistant Staphylococcus aureus (MRSA)
(Universitas Sumatera Utara, 2025)Larvae of Hermetia illucens, commonly known as maggots, are known to decompose various organic materials such as vegetables and fruits. This ability creates a body and gut environment rich in microorganisms, including ... -
Potensi Pupuk Hayati FertoMAX dalam Mengendalikan Penyakit Layu Fusarium Pada Tanaman Cabai Merah (Capsicum annum L.)
(Universitas Sumatera Utara, 2025)FertoMAX is a biofertilizer developed by the Palm Oil Research Center that requires validation of its effectiveness in promoting plant growth and controlling diseases in cultivated crops such as red chilli (Capsicum ... -
Jenis-jenis Lumut (Bryophyte) dan Analisis Kemampuan Penyerapan Logam Timbal (Pb) di Kampus Universitas Sumatera Utara
(Universitas Sumatera Utara, 2025)Universitas Sumatera Utara (USU), located in the center of Medan City, serves as a center for educational activities, making it a place that has a quite high volume of motor vehicle traffic, which contributes to the ...