Browsing Department of Biology by Issue Date
Now showing items 1-20 of 1294
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Aktivitas Berang-Berang Cakar Kecil (Aonyx cinereus) di Kebun Binatang Rahmat Zoo and Park, Desa Bengabing, Pegajahan, Sumatera Utara
(Universitas Sumatera Utara, 2026)This study aims to examine the activity patterns of small-clawed otters (Aonyx cinereus) maintained at Rahmat Zoo and Park, Bengabing Village, Pegajahan, North Sumatra. From a biological perspective, the study of daily ... -
Isolasi dan Sekuensing Fragmen cDNA Gen pi-d2 sebagai Ketahanan terhadap Penyakit Blas pada Padi Sigudang (Oryza sativa L.) dari Sumatera Utara
(Universitas Sumatera Utara, 2026)Rice blast disease caused by the fungus Pyricularia oryzae is one of the major threats to rice production. Several resistant genes have been identified to confer resistance against blast disease, including the pi-d2 gene. ... -
Isolasi dan Sekuensing Fragmen cDNA Gen pi-ta sebagai Ketahanan terhadap Penyakit Blas pada Padi (Oryza sativa L.) Sigudang dari Sumatera Utara
(Universitas Sumatera Utara, 2026)Blast disease caused by Pyricularia oryzae is one of the main threats to rice production in Indonesia. Several local rice varieties in North Sumatra, including the Sigudang cultivar, showed resistant to blast disease. ... -
Kepadatan Tikus dan Ektoparasitnya di Pemukiman Padat Penduduk di Kelurahan Mesjid, Kecamatan Medan Kota, Kota Medan, Sumatera Utara
(Universitas Sumatera Utara, 2026)This study was conducted to determine the types of rats and their ectoparasites, the relative density (trap success) of rats, the specific flea index (SFI), the prevalence, and the intensity of ectoparasite infestation ... -
Isolasi dan Uji Aktivitas Antijamur Ekstrak Etanol dan N-Heksan Tanaman Ciplukan (Physalis Angulata L.) terhadap Jamur Patogen Klinis
(Universitas Sumatera Utara, 2026)Ciplukan (Physalis angulata L.) is a medicinal plant that contains secondary metabolites with potential as an alternative to synthetic antibiotics for antifungal therapy. This study aimed to determine the phytochemical ... -
Keanekaragaman Makrozoobenthos di Sungai Tanjung Pura, Kabupaten Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2026)The Tanjung Pura River, Langkat Regency, North Sumatra, is an aquatic ecosystem experiencing anthropogenic pressure from livestock farming activities, former sand dredging, and domestic waste. This study aims to analyze ... -
Uji Aktivitas Antimikroba Ekstrak Daun Bangun-bangun (Coleus Amboinicus L.) terhadap Beberapa Isolat Mikroba Patogen Klinis
(Universitas Sumatera Utara, 2026)Coleus amboinicus Lour., commonly known in North Sumatra as “daun bangun-bangun,” is an aromatic plant from the Lamiaceae family traditionally used as an anti-infective, anti-inflammatory, and wound-healing agent. Its ... -
Potensi Khamir Endofit Daging Buah Nanas Madu (Ananas Comosus) Sebagai Penghasil Asam Indol Asetat (IAA) dan Pelarut Fosfat
(Universitas Sumatera Utara, 2026)This study aims to obtain endophytic yeasts isolated from pineapple (Ananas comosus) fruit flesh and to evaluate their potential for indole acetic acid (IAA) production and phosphate solubilization. The yeasts were ... -
Keragaman dan Potensi Selulolitik Bakteri dan Jamur dari Saluran Pencernaan Oryctes rhinoceros L.
(Universitas Sumatera Utara, 2026)The gut of insects is the natural habitat of various microbes that have the ability to degrade cellulose, which is the main component of plant walls. Oryctes rhinoceros L., is one of the pests in oil palm and is thought ... -
Deteksi Gen CehA Pengkode Enzim Karbofuran Hidrolase pada Bacillus cereus Strain HS06
(Universitas Sumatera Utara, 2026)The cehA gene is one of the genes encoding the carbofuran hydrolase (KH) enzyme, which plays a role in the biodegradation of the insecticide carbofuran. This study aimed to detect the presence of the cehA gene in Bacillus ... -
Analisis Ekspresi Protein Apoptosis pada Tikus (Rattus norvegicus) Hiperglikemia dengan Pemberian Ekstrak Etanol Bawang Batak (Allium Chinense G. Don)
(Universitas Sumatera Utara, 2026)Diabetes mellitus (DM) is a metabolic disorder characterized by chronic hyperglycemia resulting from inadequate insulin secretion and/or insulin resistance. It is currently crucial to explore new therapeutic approaches for ... -
Karakterisasi Enzim Karbofuran Hidrolase dari Bacillus Cereus Strain HS06 dan Bacillus Paramycoides Strain BSAS15
(Universitas Sumatera Utara, 2026)Bacillus cereus strain HS06 and Bacillus paramycoides strain BSAS15 are two bacteria known to have the ability to degrade carbofuran, an active compound used in pesticides which are very dangerous to the environment. This ... -
Isolasi dan Seleksi Mikroorganisme Penghasil Enzim L-Asparaginase dari Tempe
(Universitas Sumatera Utara, 2026)Tempeh is a soybean-based fermented product rich in amino acids and beneficial microorganisms, including L-asparaginase–producing species. The aim of this study was to obtain L-asparaginase-producing bacteria and fungi ... -
Studi Produksi L-asparaginase dari Actinomycetes Isolat Lokal Sumatera Utara: Seleksi dan Optimasi
(Universitas Sumatera Utara, 2026)Actinomycetes are Gram-positive filamentous bacteria known for producing a wide range of bioactive compounds, including the enzyme L-asparaginase, which has potential applications in healthcare and industrial biotechnology. ... -
Potensi Bakteri Penghasil Biosurfaktan Dari Limbah Cair Industri Kelapa Sawit Dalam Mendegradasi Minyak Goreng Bekas
(Universitas Sumatera Utara, 2025)The increasing need for cooking oil as a food ingredient has resulted in an increase in the amount of used cooking oil produced, causing pollution which has negative effects on health and the environment. This research ... -
Potensi Jamur Nematofagus (Paecilomyces fumosoroseus) dan Bakteri Penambat Nitrogen (Azotobacter sp.) Dalam Mengurangi Infeksi Meloidogyne hapla Pada Tanaman Tomat (Solanum lycopersicum L.)
(Universitas Sumatera Utara, 2025)Tomato plants (Solanum lycopersicum L.) are horticultural crop that often suffer yield losses due to the root-knot nematode attacks. This study aims to determine the ability of nematophagous fungi (Paecilomyces fumosoroseus) ... -
Potensi Jamur dari Limbah Detergen dalam Mendegradasi Linear Alkylbenzene Sulfonate
(Universitas Sumatera Utara, 2025)Contamination of detergent containing linear alkylbenzene sulfonate (LAS) waste could occur due to the absence of a standard system regarding waste management, especially from laundry businesses. This research aims to ... -
Pola Pertumbuhan dan Faktor Kondisi Ikan Iblis Merah (Amphilopus labiatus) di Perairan Danau Toba Sumatera Utara
(Universitas Sumatera Utara, 2025)The red devil fish (Amphilophus labiatus) is a type of predatory fish that also invasive. It is posing a threat to the endemic fish and other economically important fish species in a body of water. The presence of the red ... -
Skrining Fitokimia dan Uji Aktivitas Antimikroba Ekstrak Metanol Akar Sidaguri (Sida rhombifolia) terhadap Beberapa Bakteri dan Jamur Patogen Manusia
(Universitas Sumatera Utara, 2025)Infections caused by pathogenic microorganisms are generally treated with antibiotics; however, inappropriate of antibiotics use can lead to resistance, in turn other antimicrobial agents need to be develope. Many antimicrobial ... -
Optimalisasi Ekstrak Daun Sirih Cina (Peperomia Pellucida L.) Terhadap Histologi Paru-Paru Mencit (Mus Musculus L.) Yang Dipapar Asap Rokok
(Universitas Sumatera Utara, 2025)Cigarette smoke contains various harmful substances, including free radicals that smoke can lead to oxidative stress, damaging lung cells, increasing the risk of inflammation, and impairing of the lung function. The use ...