Department of Biology: Recent submissions
Now showing items 701-720 of 1255
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Kepadatan Populasi, Pola Pertumbuhan, dan Tingkat Kematangan Gonad Ikan Julung - Julung (Zenarchopterus Dispar ) di Sungai Belawan Sicanang, Kelurahan Belawan Sicanang, Medan Belawan
(Universitas Sumatera Utara, 2022)Research on population density of julung-julung fish (Zenarchopterus dispar) in the Belawan Sicanang River, Belawan Sicanang sub-district, Medan Belawan subdistrict was carried out in August 2021. The purpose of this ... -
Kemampuan Aspergillus Niger dan Saccharomyces Cerevisiae serta Metabolit yang Dihasilkan dalam Menghambat Pertumbuhan dan Produksi Aflatoksin Galur-Galur Aspergillus Flavus
(Universitas Sumatera Utara, 2022)The contamination of Aspergillus flavus on agricultural commodities cause physical damage and produce aflatoxins that harmful to humans. This study aimed to determine strains of Aspergillus niger and Saccharomyces ... -
Peran Ekstrak Daun Pirdot (Saurauia vulcani Korth.) Sebagai Penghambat Enzim α-Glukosidase dan Pengaruhnya terhadap Histologi Lambung Mencit Model Diabetes Tipe-2.
(Universitas Sumatera Utara, 2022)Pirdot is one of the traditional medicinal plants of the Toba and Karo Batak ethnic groups which is commonly used to cure diabetes. This study aims to analyze the ability of pirdot leaves to inhibit α-glucosidase enzyme ... -
Teknik Rearing dengan Perbedaan Alas Wadah Pemeliharaan pada Tahap Chawki terhadap Pertumbuhan dan Perkembangan Ulat Sutera (Bombyx Mori L.)
(Universitas Sumatera Utara, 2022)The chawki stage (instars I-III) is the most sensitive stage in rearing of silkworms (Bombyx mori L.). The use of paraffin paper (baking paper) during rearing stage was common. The use of paraffin paper continuously will ... -
“Perilaku Harian Anak Orangutan Sumatera (Pongo abelii L.) Jantan dengan Sistem Pengelolaan Kandang Tertutup di Central Park Zoo and Resort Pancur Batu
(Universitas Sumatera Utara, 2022)Deforestation and habitat destructions have been threatened the life of Sumatran orangutan (Pongo abelii). To prevent the extinction of orangutans, conservation strategies need to be implemented, one of which is ex-situ ... -
Kepadatan Populasi, Pola Pertumbuhan, dan Tingkat Kematangan Gonad Ikan Julung-Julung (Zenarchopterus dispar) di Sungai Belawan Sicanang, Kelurahan Belawan Sicanang, Medan Belawan
(Universitas Sumatera Utara, 2022)Research on population density of julung-julung fish (Zenarchopterus dispar) in the Belawan Sicanang River, Belawan Sicanang sub-district, Medan Belawan subdistrict was carried out in August 2021. The purpose of this ... -
Perilaku Individu Orangutan Sumatera (Pongo Abelii L.) Jantan dengan Sistem Pengelolaan Kandang Tertutup Di Central Park Zoo and Resort Pancur Batu
(Universitas Sumatera Utara, 2022)Sumatran orangutan (Pongo abelii L.) is species that categorized as critically endangered due to destruction and narrowing their habitat conservation efforts need to be carried out to protect and preserve the diversity of ... -
Produksi dan Komposisi Kimia Susu Kambing Saanen (Capra Aegagrus H. ) yang Diberi Ransum Daun Pepaya (Carica Papaya L.) dan Pakan Konsentrat
(Universitas Sumatera Utara, 2022)Milk production and chemical composition are strongly influenced by feed. This study aims to determine the effect of papaya leaf and feed concentrates on milk production, feed consumption, feed conversion and chemical ... -
Keanekaragaman Genetik Durian (Durio Zibethinus Murr.) di Kabupaten Mandailing Natal Menggunakan Marka Simple Sequence Repeats (SSR
(Universitas Sumatera Utara, 2022)North Sumatra is known as one of durian production centers in Indonesia. Among all the districts in North Sumatra, Durian at Mandailing Natal District has high quality. unique and also has special characteristics. The aim ... -
Kepadatan, Distribusi dan Pola Pertumbuhan Kerang Bulu (Anadara Antiquata) di Perairan Pantai Pematang Matik, Desa Lubuk Saban, Kabupaten Serdang Bedagai, Sumatera Utara
(Universitas Sumatera Utara, 2022)Anadara antiquata is a feather shells family of Arcidae, class of Bivalvia. The feather shells has an economic value and high nutrititional content. High human activity particularly excessive fishing on Pematang Matik ... -
Keanekaragaman Kerang (Bivalvia) di Perairan Pantai Pematang Matik, Desa Lubuk Saban, Kabupaten Serdang Bedagai, Sumatera Utara
(Universitas Sumatera Utara, 2022)Pematang Matik beach is an area that has a water zone whose area is located between the highest and lowest tides as well as the existence of various community activities in the area. This study aims to analyze the bivalves ... -
Keanekaragaman Kerang (Bivalvia) di Perairan Pantai Pematang Matik, Desa Lubuk Saban Kabupaten Serdang Bedagai Sumatera Utara
(Universitas Sumatera Utara, 2022)Pematang Matik beach is an area that has a water zone whose area is located between the highest and lowest tides as well as the existence of various community activities in the area. This study aims to analyze the bivalves ... -
Kebiasaan Makan Ikan Duri (Hexanematichthys sagor) di Sungai Belawan Kelurahan Belawan Sicanang Kecamatan Medan Belawan
(Universitas Sumatera Utara, 2022)The eating habits of duri fish (Hexanematichthys sagor) in the Belawan river, Belawan Sicanang Village, Medan Belawan Regency, was carried out from July to August 2021. The aim was to analyze eating habits of the fish. The ... -
Estimasi Kepadatan Orangutan Sumatera (Pongo Abelii) Berdasarkan Jumlah Sarang di Marike dan Sikundur Kecil Kawasan Taman Nasional Gunung Leuser Sumatera Utara
(Universitas Sumatera Utara, 2012)A study of “Density Estimation of Orangutan Sumatera (Pongo abelii) Population Based on Number of Nest in Marike and Sikundur Kecil Gunung Leuser National Park Area, north sumatera” was conducted in August 2010 to January ... -
Studi Keanakaragaman Plankton di Perairan Danau Toba Kecamatan Pangururan Kabupaten Samosir
(Universitas Sumatera Utara, 2009)Have been done research about The Study of Diversity Plankton in Danau Toba District of Pangururan Regency of Samosir. This research is done with Purposive Random Sampling that is determining 4 research station of pursuant ... -
Pengaruh pH Air terhadap Tingkat Patogenitas Viral Nervous Necrosis Pada Benih Ikan Kerapu Macan (Epinephelus fuscoguttatus)
(Universitas Sumatera Utara, 2011)A study on effect of pH on pathogenicity of viral nervous necrosis in seed tiger grouper (Epinephelus fuscoguttatus) has been carried out from January to April 2011. The purpose of this study was to investigate the effect ... -
Hubungan Nilai Produktivitas Primer Fitoplankton dengan Faktor Fisik Kimia Perairan Parapat, Danau Toba
(Universitas Sumatera Utara, 2009)The aimed of this research were to investigate the relation of primary productivity value with the chemistry physic factor Parapat, Lake Toba. Primary productivity in Lake Toba from activity photosynthesis of done by ... -
Studi Keanekaragaman Ikan Karang di Sebelah Timur Perairan Pulau Rubiah Nanggroe Aceh Darussalam
(Universitas Sumatera Utara, 2009)The research with the title “Study of Reef Fish Diversity At The East Part Oceanik Of Rubiah Island Nanggroe Aceh Darussalam” have been done at May 2009. This Research is done with the method of Purpossive Random Sampling ... -
Kemampuan Antifungi Bakteri Endofit Kelapa Sawit (Elaeis Guineensis Jacq.) terhadap Ganoderma Boninenese Pat.
(Universitas Sumatera Utara, 2008)A study on ”Bioassay Antifungal effect of Endophytic Bacteria of Oil Palm (Elaeis guineensis Jacq.) Againts Ganoderma boninense Pat. has been conducted in Microbiology Laboratory, Biology Department, Faculty of Mathematic ... -
Kemampuan Isolat Bakteri Penghasil Antijamur dalam Menghambat Beberapa Jenis Fusarium Pada Benih Tomat (Solanum Lycopersicum L.)
(Universitas Sumatera Utara, 2012)A study of the ability of antifungal bacterial isolates to inhibit Fusarium spp. on tomato seeds (Solanum lycopersicum L.) has been conducted in Laboratory of Microbiology, Department of Biology, Faculty of Mathematics and ...