Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 321-340 of 11456
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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 ... -
Pemanfaatan Limbah Tandan Kosong Kelapa Sawit (Elaeis Guineensis Jack) dan Pasir Besi Alam Sebagai Adsorben Logam Berat Tembaga
(Universitas Sumatera Utara, 2025)In this research, the synthesis and characterisation of the raw materials of activated carbon of oil palm empty fruit bunches and natural iron sand as an adsorbent for heavy metal copper using a composition ratio of 1 : ... -
Analisis Kandungan Logam Berat Pb dan Cd pada Daging Ikan Nila (Oreochromis niloticus) di Muara Sungai Percut Sei Tuan, Kabupaten Deli Serdang
(Universitas Sumatera Utara, 2025)The river is a long stream that flows from upstream to downstream, the Percut river flows from the upstream area of Sibolangit sub-district to the downstream area of Percut Sei Tuan sub-district. The number of activities ... -
Pengaruh Ekstrak Etanol Lumut Hati Marchantia paleacea Bertol. Pada Jaringan Payudara Tikus (Rattus norvegicus L.) Setelah Diinduksi 7,12 Dimetilbenz(α)anthracene (DMBA)
(Universitas Sumatera Utara, 2025)nticancer agent, It possesses antiproliferative properties, and may influence the growth of mammary nodules. This study seeks to assess the impact of Marchantia paleacea Bertol methanol extract on the breast tissue ... -
Sistem Peringatan pada Titik Buta Kendaraan Truk Menggunakan Sensor Ultrasonik HC-SR04 dan ESP32-CAM dengan Tampilan Visual Node-RED
(Universitas Sumatera Utara, 2025)Traffic accidents involving large vehicles such as trucks are often caused by blind spot areas that are not visible to the driver. To address this issue, this study aims to design and implement a blind spot warning system ... -
Kajian Metode Fuzzy Sugeno dalam Mengidentifikasi Tingkat Risiko Kebakaran Hutan
(Universitas Sumatera Utara, 2025)In the implementation of fuzzy logic, the Sugeno fuzzy method faces several challenges, such as issues in determining the fuzzy rule base and the occurrence of undefined outputs (defuzzification) with values of 0/0. ... -
Studi Etnoornitologi Burung Kuntul Famili (Ardaidae) di Desa Tanjung Rejo Kecamatan Percut Sei Tuan Kabupaten Deli Serdang
(Universitas Sumatera Utara, 2025)Tanjung Rejo Village,located at Percut Sei Tuan District, Deli Serdang Regency, North Sumatra, is one of the areas that has a fairly high bird population and one of the areas that act as a habitat for waterfowl, especially ... -
Kelimpahan, Komposisi Ukuran dan Pola Pertumbuhan Kepiting Bakau (Scylla serrata) di Estuari Karang Gading Kabupaten Deli Serdang Sumatera Utara
(Universitas Sumatera Utara, 2025)Mangrove crabs play a role in increasing oxygen distribution in estuarine areas. The Karang Gading estuary area is located in the Karang Gading mangrove ecosystem. Several parts of the area in the Karang Gading mangrove ... -
Potensi Ekstrak Jamur Tiram (Pleurotus ostreatus) sebagai Antilipid dalam Memperbaiki Aorta Tikus (Rattus norvegicus L.) Jantan Model Hiperlipidemia
(Universitas Sumatera Utara, 2025)Dyslipidemia is one of the major risk factors for cardiovascular disease, characterized by disturbances in blood lipid profiles and histological changes in the aortic blood vessels. The use of synthetic drugs such as ... -
Perancangan an Pengaplikasian Sensor SO2 untuk Sistem Pemantauan Polusi Udara Berbasis IoT di Sekitar PLTU Pangkalan Susu
(Universitas Sumatera Utara, 2025)Air pollution is one of the major environmental issues that negatively impacts human health and ecosystems. One of the main pollutants contributing to air pollution is sulfur dioxide (SO₂), which is produced by the combustion ...