Department of Biology: Recent submissions
Now showing items 901-920 of 1257
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Efektifitas Pemberian Soyghurt terhadap Penurunan Kadar Kolesterol dalam Darah Mencit (Mus musculus) dengan Jumlah Bakteri Asam Laktat dan Suhu Inkubasi yang Optimum
(Universitas Sumatera Utara, 2011)The research of yoghurt preparation using the lactic acid bacteria Lactobacillus bulgaricus and Streptococcus thermophillus had conducted. This research aims to study the effectiveness of yoghurt to decrease the ... -
Kajian Pemanfaatan Tumbuhan Obat pada Masyarakat Angkola di Kecamatan Padangsidimpuan Hutaimbaru
(Universitas Sumatera Utara, 2012)The utilization of medicinal plants of Angkola society in the Padangsidimpuan Hutaimbaru district, has been conducted from January to March 2012. This study used random sampling techniques, interviews and questionnaires. ... -
Keanekaragaman Jenis Fungi pada Serasah Daun Avicennia Marina yang Mengalami Dekomposisi pada Berbagai Tingkat Salinitas
(Universitas Sumatera Utara, 2010)The aim of this research was to investigate the effect of salinity level on the divesity of fungi and the carbohydrates and protein content from A. marina leaf litter during the decomposition process. This research ... -
Potensi Seed Bank Hutan Gunung Sinabung Jalur Pendakian Sigarang-Garang Pasca Letusan Tahun 2010
(Universitas Sumatera Utara, 2013)Potential of seed bank in forest Sigarang-garang line after the eruption of Sinabung Mountain in 2010 has been studied from December 2012 to May 2013. Location research is purposive sampling with respect to topography and ... -
Studi Viabilitas Bakteri Asam Laktat pada Fermentasi Tauco dalam Larutan Garam
(Universitas Sumatera Utara, 2009)The objective of this research was to analyze the effect of the fermentation period of fermented tauco in salt solution on viability of lactic acid bacteria. The sample of fermented tauco was taken every week to analyze ... -
Aktivitas Antimikroba Ekstrak Biji Alpukat (Persea Americana Mill.) terhadap beberapa Mikroba Patogen Secara in Vitro
(Universitas Sumatera Utara, 2014)A antimicrobial of activity of avocado seed extracts (Persea americana Miill.) to several microbial pathogens in vitro had been conducted. This study aims to determine the antimicrobial potential of avocado seed extract ... -
Komposisi Komunitas Cacing Tanah pada Lahan Pertanian Organik dan Anorganik (Studi Kasus Kajian Cacing Tanah Untuk Meningkatkan Kesuburan Tanah di Desa Raya Kecamatan Berastagi Kabupaten Karo)
(Universitas Sumatera Utara, 2013)The study had been done in the Raya village, Berastagi Sub District, Karo District, North Sumatra and Animal Systematics Laboratory Department Biology, of North Sumatra University, Medan in January to Aprch 2013. The study ... -
Studi Komparasi Jenis Makanan Ikan Keperas (Puntius Binotatus) di Sungai Aek Pahu Tombak, Aek Pahu Hutamosu dan Sungai Parbotikan Kecamatan Batang Toru Tapanuli Selatan
(Universitas Sumatera Utara, 2013)Research about study of comparative types food in fish Keperas (Puntius binotatus) in the river of Aek Pahu Tombak, Aek Pahu Hutamosu and Parbotikan, District Batang Toru that have aim to determine the types of food in the ... -
Deteksi Molekuler Red Seabream Iridovirus (Rsiv) pada Komoditas Kerapu (Epinephelus Spp.) di Balai Karantina Ikan, Pengendalian Mutu dan Keamanan Hasil Perikanan Medan 1
(Universitas Sumatera Utara, 2021)Red Seabream Iridovirus (RSIV) is a DNA virus classified in the iridoviridae family. Iridovirus causes Sleepy Grouper Diseases (SGD) infection on aquaculture. Diagnosis of RSIV based on the observation of infection symptoms ... -
Efek Ekstrak Daun Pirdot (Saurauia Vulcani K.) terhadap Histologi Hepar Mencit (Mus Musculus L.) Model Diabetes Tipe 2 yang Diinduksi Streptozotocin
(Universitas Sumatera Utara, 2021)Diabetes Mellitus is a disease characterized by the occurrence of hyperglycemia and impaired metabolism of carbohydrates, fats, proteins as well as impaired insulin secretion. DM can be handled with a healthy lifestyle ... -
Aktivitas Enzim Protease Isolat Bakteri Termofilik dari Beberapa Sumber Air Panas di Sumatera Utara
(Universitas Sumatera Utara, 2013)Isolation and partial characterization of crude protease of thermophilic bacteria from several hot springs in Sumatera Utara has been done. Twenty isolates showed proteolitic activity qualitatively in Skim Milk Agar ... -
Aktifitas Ekstrak Bakteri yang Berasosiasi dengan Spons Haliclona SP2. dan Axinellid SP. sebagai Antibakteri
(Universitas Sumatera Utara, 2014)An effort to explore a new antibacterial compounds should be considered since increasing resistance of bacteria due to intensive utilization of antibiotics. Marine sponges are frequently assosiated with bacteria of ... -
Distribusi dan Performa Reproduksi Kepiting Bakau Scylla Oceanica di Ekosistem Mangrove Belawan Sumatera Utara
(Universitas Sumatera Utara, 2014)The Distribution and Reproduction Performance of Mangrove Crab Scylla oceanica in Belawan Mangrove Ecosystem has been studied. The research objective is to determine distribution of mangrove crab S oceanica; determine female ... -
Keanekaragaman dan Distribusi Ikan di Perairan Estuari Belawan Sumatera Utara
(Universitas Sumatera Utara, 2014)The Diversity and Distribution of Fish in AquaticEstuaryBelawanin North Sumatra” has been studied. Four sampling stations are settled through purposive random with 30 replication for each station. There are 18 genera ... -
Pengendalian Biofilm Streptococcus Agalactiae pada Permukaan Sisik Ikan dan Plastik Pvc dengan Senyawa Antibakteri Bakteri Asam Laktat Perairan Tawar
(Universitas Sumatera Utara, 2013)Streptococcus agalactiae is bacteria that cause streptococcosis on fish and able to form biofilm on solid surface. The aim of this research is to control biofilm S.agalactiae by using antibacteria compound of Lactid Acid ... -
Studi Viabilitas Khamir pada Fermentasi Tauco dalam Larutan Garam
(Universitas Sumatera Utara, 2010)The aim of this research was to investigate the effect of the yeast viability, the role of yeast on physico-chemical changing and the varieties of yeast on fermented tauco in salt solution. This research had been performed ... -
Keanekaragam Fungi Mikoriza Arbuskula di Perkebunan Tebu PTPN 2 Sei Semayang Sumatera Utara
(Universitas Sumatera Utara, 2010)The objective of this research was to know the diversity of arbuscular mycorrhiza fungi in sugar cane field. The soil sample and root were taken from sugar cane rhizosfer of 2 and 5 mounth plant. Observation were done in ... -
Penapisan dan Analisis Gen Ketahanan Tanaman Padi (Oryza Sativa L.) dari Tapanuli Selatan, Sumatera Utara terhadap Pyricularia Oryzae Ras 173 Penyebab Penyakit Blas
(Universitas Sumatera Utara, 2021)Blast caused by Pyricularia oryzae is one of the main obstacles in increasing rice production in Indonesia, especially South Tapanuli Regency, North Sumatera. Blast symptoms were signed by rhombic-shaped spots with gray ... -
Kajian Pemanfaatan Tumbuhan Obat pada Masyarakat Karo di Kecamatan Tigabinanga Kabupaten Karo
(Universitas Sumatera Utara, 2011)The research about the application of medical plant has been conducted in Karo society in Kecamatan Tigabinanga Kabupaten Karo. This research uses both quantitative and qualitative methods in taking the data by using ... -
Deteksi Molekuler White Spot Syndrom Virus (WSSV) pada Komoditas Udang Vannamei (Litopenaeus Vannamei) di Balai Karantina Ikan Pengendalian Mutu Medan I Sumatera Utara
(Universitas Sumatera Utara, 2021)White Spot syndrom virus (WSSV) is a disease registed by The Office International Epizooties (OIE). WSSV causes a major problem in marine fishery production. Vannamei shrimp infected with WSSV can cause high mortality in ...