Department of Biology: Recent submissions
Now showing items 581-600 of 1255
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Hubungan Kekerabatan Amfibi (Ordo Anura) di Kecamatan Sibolangit Kabupaten Deli Serdang berdasarkan Morfometrik
(Universitas Sumatera Utara, 2016)The research of Amphibians (order Anura) relationship based on morphometrics in Sibolangit, Deli Serdang District, North Sumatera has been conducted in January to July 2015. The purpose of this research was to determine ... -
Struktur Komunitas Amfibi di Kawasan Ekowisata Lau Bertu Desa Rumah Galuh Kecamatan Sei Bingei Kabupaten Langkat Sumatera Utara
(Universitas Sumatera Utara, 2016)Community structure of amphibians at Lau Bertu Ecotourism area of Rumah Galuh Village, Sei Bingei District, Langkat Regency, North Sumatera have been done in January-February 2015. Were using purposive random sampling ... -
Kemampuan Bakteri Kitinolitik Asal Rizosfer Tanaman Karet dalam Mengendalikan Jamur Akar Putih pada Bibit Karet
(Universitas Sumatera Utara, 2015)Cultivation of rubber plant is inhibited by diseases. The diseases attacks rubber plants caused by Rigidiporus lignosus which damages rubber roots while Colletotrichum and Corynespora cause leaf diseases. The purpose ... -
Keanekaragaman Fitoplankton di Perairan Danau Toba Desa Silalahi Kabupaten Dairi
(Universitas Sumatera Utara, 2015)Diversity of Fytolankton in the Lake Toba Silalahi, Dairi of North Sumatera has been studied from March to April 2015. The samples were taken from four observation stations and at every station observations were with ... -
Pengaruh Intensitas Kebisingan terhadap Gambaran Histopatologis Lambung Tikus Putih (Rattus norvegicus L.) Jantan
(Universitas Sumatera Utara, 2016)Noise is undesired sound which can affect and threaten one’s health. Objective of this study is to obtain histopathological image of Rattus novergicus L. stomach under effect of noises. This research was experimental ... -
Perilaku Berbiak Burung Kuntul Kerbau (Bubulcus ibis L.) di Kawasan Hutan Mangrove Desa Tanjung Rejo, Kecamatan Percut Sei Tuan, Kabupaten Deli Serdang, Sumatera Utara
(Universitas Sumatera Utara, 2015)Bubulcus ibis is one of the birds that lives in to ponds area of Tanjung Rejo by utilizing the wetlands in taking foods, as long as the time, the ponds now are filled by the fishings, so that the existence and the ... -
Persentase Tutupan dan Bentuk Pertumbuhan Karang Hidup di Perairan Pulau Ungge Kabupaten Tapanuli Tengah
(Universitas Sumatera Utara, 2015)The research about “ Cover Percentage And Lifeform of Coral Living In Ungge Island Regency of Tapanuli Tengah” has been done on February 2015. The research aims to find out the latest conditions of cover percentage of ... -
Perilaku Harian Ibu dan Anak Orangutan (Pongo Abelii) di Ekowisata Bukit Lawang Taman Nasional Gunung Leuser Kabupaten Langkat
(Universitas Sumatera Utara, 2009)The daily activities of mother and infant Sumatran Orangutan (Pongo abelii) research was conducted from March to June 2008 in Bukit Lawang ecoturism center, Gunung Leuser National Park, sub-district Bohorok, Langkat ... -
Persen Tutupan (Percent Cover) Terumbu Karang Hidup di Bagian Timur Perairan Pulau Rubiah Nanggroe Aceh Darussalam
(Universitas Sumatera Utara, 2009)Research about “Percent Cover of Life Coral Reef in the East of Rubiah Island, Nanggroe Aceh Darussalam province” had investigated on May 2009. This research was done with the Purpossive Random Sampling method, that is ... -
Estimasi Kepadatan Orangutan Sumatera (Pongo Abelii) Berdasarkan Jumlah Sarang di Bukit Lawang Taman Nasional Gunung Leuser Sumatera Utara
(Universitas Sumatera Utara, 2009)A study on “Estimation Of Orangutan Sumatera Population (Pongo abelii) Density based on Numbers Of Nest In Bukit Lawang Taman Nasional Gunung Leuser” has been conducted from August until September 2009. The research ... -
Pengaruh Pemberian Ekstrak Segar Buah Andaliman (Zanthoxylum acanthopodium DC.) terhadap Gambaran Histologis Ginjal Mencit Jantan (Mus musculus L.)
(Universitas Sumatera Utara, 2015)The Histologic Description of Male Mice (Mus musculus L.) Kidney Treated With Fresh Andaliman (Zanthoxylum acanthopodium DC.) Fruit Extract has been studied from March 2013 to November 2014. The study used completely ... -
Studi Keanekaragaman Ikan Karang di Kawasan Perairan Bagian Barat Pulau Rubiah Nanggroe Aceh Darussalam
(Universitas Sumatera Utara, 2009)The research with the title “Study of Reef Fish Diversity At The west 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 ... -
Studi Komparasi Keanekaragaman Makrozoobentos di Perairan Haranggaol, Danau Toba, Sumatera Utara
(Universitas Sumatera Utara, 2015)An experiment in Lake Toba has been conducted to compare the value of diversity of macrozoobenthos in each station based on differences in human activity, physical and chemical parameters of water in relation to ... -
Komposisi dan Distribusi Mesofauna Tanah di Perkebunan Kelapa Sawit Pt Moeis dan Perkebunan Rakyat di Desa Simodong Kecamatan Sei Suka Kabupaten Batu Bara
(Universitas Sumatera Utara, 2009)The composition and distribution of soil animal in PT. Moeis and Simodong Estate, District Sei Suka, Subprovince Batu Bara has been investigated February 2009. Sampling area was determinated by using Purposive Random ... -
Kepadatan Ikan Bilih (Mystacoleucus padangensis Blkr.) dan Pola Pertumbuhannya di Perairan Haranggaol Danau Toba
(Universitas Sumatera Utara, 2015)Research on densities of bilih fish (Mystacoleucus padangensis Blkr.) and growth patterns in the waters of Lake Toba Haranggaol had been carried out in December 2014 to January 2015. The purpose of this study was to ... -
Struktur dan Komposisi Vegetasi Pohon dan Pole di Sekitar Jalur Wisata Taman Wisata Alam Sicikeh-Cikeh Kabupaten Dairi Sumatera Utara
(Universitas Sumatera Utara, 2009)A Study on Structure and Composition of Tree and Pole Vegetation at Tour Track Around In Sicikeh-cikeh Conservation Forest Region Dairi, North Sumatera has been conducted in January to February 2009. Sampling area was ... -
Isolasi dan Identifikasi Bakteri Kitinolitik dari Nepenthes tobaica dan Nepenthes gracilis
(Universitas Sumatera Utara, 2015)Nepenthes, a pitcher plant obtains its nitrogen from degrading trapped insect in the pitcher. Chitinolytic bacteria are assumed acting in degradation of exoskeletons of insects in the pitcher. In this study, chitinolytic ... -
Studi Keanekaragaman Plankton di Aliran Sungai Lau Sitelu Desa Namorambe Kabupaten Deli Serdang
(Universitas Sumatera Utara, 2009)This research have been conducted in Juli 2008. Sampling pointed by using "Purposive Random sampling". Samples were collected from four station. Every station is pointed in five plots. Sample identification was held in ... -
Identifikasi dan Prevalensi Ektoparasit Ikan Lele Dumbo (Clarias gariepinus) di Desa Tanjung Rejo Percut Sei Tuan Sumatera Utara
(Universitas Sumatera Utara, 2015)There are many problems often found in the fish farming field which can reduce the productivity. One of those problems is caused by ectoparasite's infestation. Identification and prevalence study on the ectoparasites ... -
Analisis Keanekaragaman Genetik Markisa (Passiflora spp.) di Sumatera Utara berdasarkan Penanda RAPD (Random Amplified Polymorphic DNA)
(Universitas Sumatera Utara, 2015)The research about Genetic diversity analysis of the passion fruit (Passiflora spp.) in north Sumatera based on RAPD markers has been done in Genetic Laboratory and Integrated Laboratory, University of North Sumatera. ...