Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1001-1020 of 11354
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Jenis dan Kepadatan Nyamuk Sebagai Vektor yang Bersifat Antropofilik dan Zoofilik di Desa Ujung Bandar, Kabupaten Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2023)Ujung Bandar Village is a village located at the Leuser mountains which has high humid air, low air temperatures and fairly high rainfall. Such environmental conditions allow the village to become a breeding ground for ... -
Analisis Kualitas Pelayanan Jasa Pendidikan Menggunakan E-Learning Saat Pandemi Covid-19 di Program Studi Sarjana Matematika USU dengan Metode Quality Function Deployment (QFD)
(2023)QFD (Quality Function Deployment) is a method that has a positive impact on companies and is a tool and technique that is free to study specific data collected from consumers. To produce products that meet consumer ... -
Efektivitas Light Trap dan Bg Senttinel Trap Terhadap Kepadatan Nyamuk di Desa Ujung Bandar Kecamatan Salapian Kabupaten Langkat Sumatera Utara
(Universitas Sumatera Utara, 2023)Mosquitoes are one of the insects that interfere with human health. The source of mosquito nutrition used as energy can come from human blood. The research was conducted at Ujung Bandar Village, Salapian District, Langkat ... -
The Neuromodulatory Potential of Nanoherbal Biwa (Eriobotrya Japonica Lindl.) in Rodent Model of Ischemic Stroke and Epilepsy
(Universitas Sumatera Utara, 2024)Biwa (Eriobotrya japonica Lindl.) dikenal secara umum dengan nama loquat merupakan tumbuhan yang berpotensi menjadi obat anti inflamasi, anti kejang, dan anti epilepsi. Biwa terbukti mengandung komponen antioksidan dan ... -
Kepadatan, Hubungan Panjang Berat dan Faktor Kondisi Ikan Sembilang (Plotosus Canius) di Perairan Pantai Bagan Kuala, Kabupaten Serdang Bedagai
(Universitas Sumatera Utara, 2023)Sembilang fish (Plotosus canius) is one of the fish that lives on Bagan Kuala Beach and is often consumed by the people around the beach. This study aimed to determine the density, the length weight relationship of the ... -
Isolation, Partial Purification and Characterization of Urease Enzyme from Red Rice Beans (Vigna Umbellata)
(Universitas Sumatera Utara, 2023)Urease (EC 3.5.1.5) adalah enzim yang menghidrolisis urea menjadi amonia dan karbon dioksida. Enzim urease memiliki banyak manfaat seperti pengolahan limbah industri, hemodialisis, diagnosis medis dan pengukuran kandungan ... -
Pemanfaatan Ekowisata Gajah Sumatra (Elephas Maximus Sumatranus) pada Masyarakat Karo di Tangkahan, Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2023)Community participation is one of the success factors in community-based ecotourism. Tangkahan ecotourism destination has become a leading tourism destination because this destination presents the sumatran elephants as an ... -
Efek Ekstrak Metanol Nanoherbal Daun Rhodomyrtus Tomentosa (Aiton) Hassk. Terhadap Model Hewan Neuroinflamasi
(Universitas Sumatera Utara, 2024)This research was carried out by using Rhodomyrtus tomentosa (Aiton) Hassk. leaves or haramunting from Rantauprapat, North Sumatra, Indonesia which was processed into nanoherbal and then extracted with methanol (Meth-Ext) ... -
Kepadatan, Hubungan Panjang Berat dan Faktor Kondisi Ikan Kedukang (Hexanematichthys Sagor) di Perairan Pantai Bagan Kuala, Kabupaten Serdang Bedagai
(Universitas Sumatera Utara, 2023)The kedukang fish (Hexanematichthys sagor) is a type of catfish often found in coastal areas. The research on the density, the relationship between length and weight and the condition factors of Kedukang Fish (Hexanematichthys ... -
Jenis-Jenis Arecaceae (Palem-Paleman) di Kebun Raya Sipirok Kabupaten Tapanuli Selatan Sumatera Utara
(Universitas Sumatera Utara, 2023)The Sipirok Botanical Garden is a tropical forest area from the lowlands to the highlands which targets Arecaceae as one of the plants to be conserved, therefore it is necessary to research the quantity of Arecaceae ... -
Pengaruh Ekstrak Metanol Buah Andaliman (Zanthoxylum Acanthopodium) yang Berpotensi sebagai Antifertilitas Terhadap Organ Ginjal Mencit
(Universitas Sumatera Utara, 2023)Secondary metabolite compounds of the steroids, alkaloids, flavonoids, triterpenoids, tannins and saponins are compounds that act as an antifertility. Zanthoxylum acanthopodium contains flavonoids, alkaloids, pyranoquinoline ... -
Penaksiran Parameter Regresi Poisson dengan Maximum Likelihood
(Universitas Sumatera Utara, 2023)Poisson regression is a regression analysis employed to model a response variable (Y) with a predictor variable (X). This research aims to estimate the parameters in the poisson regression model using the Maximum Likelihood ... -
Karakterisasi Bolus Radioterapi Berbahan Silicone Rubber dan Resin Epoksi pada Energi 8 MeV dan 10 MeV
(Universitas Sumatera Utara, 2023)Radiotherapy bolus has been successfully made using melt-intercalation method with silicone rubber and epoxy resin. Some composition variations used are silicone rubber: epoxy resin: catalyst (80:16:4)%v/v, (80:17:3)%v/v, ... -
Analisis Perbandingan Kualitas Sumber Air pada Mineral Water Vending Machine Berbasis Tenaga Surya
(Universitas Sumatera Utara, 2023)Mineral Water Vending Machines (MWVM) have become a popular solution for providing easy and fast access to quality drinking water. This research aims to analyze the quality of well water sources and river water in MWVM ... -
Perilaku Agonistik Harimau Sumatra (Panthera Tigris Sumatrae) Jantan di Central Park Zoo and Resort, Pancur Batu, Kabupaten Deli Serdang, Sumatra Utara
(Universitas Sumatera Utara, 2023)Sumatran tiger (Panthera tigris-sumatrae) is one of rare species that categorized as endangered due to poaching and habitat destruction. Therefore, exsitu conservation efforts needed to maintain it’s sustainability, one ... -
Pemanfaatan Serat Eceng Gondok (Eichhornia Crassipes) dalam Pembuatan Beton Polimer dengan Penambahan Resin Epoxy sebagai Perekat
(2023)Resealrch hals been calrried oult on malking polymer concrete ulsing al composition raltio: salnd, walter hyalcinth fiber alnd epoxy resin to determine the effect of aldding walter hyalcinth fiber on the physicall alnd ... -
Pengaruh Ekstrak Metanol Buah Andaliman (Zanthoxylum Acanthopodium Dc.) yang Berpotensi Sebagai Antifertilitas Terhadap Histologi Hati Mencit (Mus Musculus L.)
(Universitas Sumatera Utara, 2023)Andaliman fruit (Zanthoxylum acanthopodium) contains active secondary metabolite compounds like alkaloids, flavonoids, glycosides, saponins and steroids/triterpenoids. The plants contain compounds from the steroid, alkaloid ... -
Analisis Vegetasi Tumbuhan Bawah di Kebun Raya Sipirok Kabupaten Tapanuli Selatan Sumatera Utara
(Universitas Sumatera Utara, 2023)Sipirok Botanical Garden is a forest with a various types of understory plants, the diversity of understory plants at that area is not yet known. The purpose of this research was to analyze the composition of lower plants ... -
Jenis-Jenis Araceae di Kebun Raya Sipirok Kabupaten Tapanuli Selatan Sumatera Utara
(Universitas Sumatera Utara, 2023)Araceae is one of the flowering plants generally live in tropical areas which has relatively high humidity. One of them is the Sipirok Botanical Garden area This area has a humid and watery, also it has shady environmental ... -
Penaksiran Parameter Model Regresi Probit Multinomial Menggunakan Maximum Likelihood Estimation
(Universitas Sumatera Utara, 2023)This research aims to investigate the Multinomial Probit Regression (MNP) model using the Maximum Likelihood Estimation (MLE) method and to estimate the parameters involved in the model, including intercepts and regression ...