Department of Biology: Recent submissions
Now showing items 361-380 of 1212
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Hubungan Keanekaragaman Ikan dan Faktor Fisik-Kimia Perairan Sungai Mencirim, Binjai Provinsi Sumatera Utara
(Universitas Sumatera Utara, 2016)The relationship of fish variety and chemical physical factor Mencirim river, Binjai of North Sumatera has been observed from June to August 2015. Sample stasion is settle using “Purposive Random Sampling”. There are ... -
Keanekaragaman Plankton di Sungai Buaya Kabupaten Sergai dan Kabupaten Deli Serdang Sumatera Utara
(Universitas Sumatera Utara, 2015)Have been done research with the title “Diversity Of Plankton in Buaya River Regency Sergai And Regency Deli Serdang North Sumatera”. This research is done with the method of Purpossive Random Sampling that is determine ... -
Karakterisasi Mikrokapsul Sinbiotik Bakteri Asam Laktat Isolat PG7 yang Dienkapsulasi dengan Alginat, Susu Skim, dan Inulin
(Universitas Sumatera Utara, 2016)The application of probiotics in aquaculture represents an alternative way for fish disease prevention. However, low viability and survival in application of probiotic still being an obstacle. Encapsulation has been ... -
Studi Perilaku Menyimpang Orangutan Sumatera (Pongo abelii) Betina Dewasa Semi Liar di Bukit Lawang Taman Nasional Gunung Leuser Sumatera Utara
(Universitas Sumatera Utara, 2016)The status of Sumateran Orangutan is endangered based on IUCN Red data. Bukit Lawang as the habitat of Sumateran Orangutan (Pongo abelii) is in located Taman Nasional Gunung Leuser. The condition is wanted to be observed ... -
Populasi Lobster Air Tawar (Cherax quadricarinatus) di Perairan Danau Toba, Desa Marlumba, Kecamatan Simanindo, Kabupaten Samosir, Sumatera Utara
(Universitas Sumatera Utara, 2016)This study has been conducted at Lake Toba, Marlumba village during February 2016. Purposive sampling method was used to determine three stations of the research based on community activities at the lake. Tools were ... -
Struktur dan Komposisi Vegetasi Pohon dan Potensi Karbon Tersimpan di Kawasan Hutan Gunung Sibuatan Kecamatan Merek Kabupaten Karo
(Universitas Sumatera Utara, 2015)Research on the structure and composition of vegetation Trees and Potential Carbon Stored in Forest Areas Mount Sibuatan Sub Brand Karo district of North Sumatra Province was held in December 2014 to May 2015. This ... -
Keanekaragaman Ikan di Perairan Sungai Sibiru-Biru, Kecamatan Sibiru, Kabupaten Deli Serdang, Sumatera Utara
(Universitas Sumatera Utara, 2016)Nowadays the ecosystem of Sibiru-biru river area was decreased, was shown from decreasing fish found in that area. A study of fish diversity of Sibiru-biru river has been done through sampling. Sampling design was based ... -
Kadar Klorofil dan Kerapatan Stomata Mahoni (Swietenia macrophylla King) pada Beberapa Lokasi di Kota Medan
(Universitas Sumatera Utara, 2016)The research about Chlorophyll Content and Stomata Density Of Mahoni (Swietenia macrophylla King) at Some Location In Medan was conducted since August 2015 until February 2016. The objective of this research was to ... -
Isolasi dan Identifikasi Bakteri Pelarut Fosfat dan Penghasil Asam Indol Asetat dari Guano Gua Kampret dan Uji Kemampuannya dalam Meningkatkan Pertumbuhan Tanaman
(Universitas Sumatera Utara, 2016)Phosphate solubilizing bacteria is a group of bacteria that dissolves unavailable phosphate into the form that can be absorbed by plants. Study about isolation and identification of phosphate solubilizing bacteria and ... -
Keanekaragaman Ikan dan Hubungannya dengan Faktor Fisik-Kimia di Sungai Asahan Desa Puloraja, Kabupaten Asahan, Provinsi Sumatera Utara
(Universitas Sumatera Utara, 2016)This study has been conducted at Asahan river, Puloraja Village on during April 2016. Purpossive sampling method was used to Determine four stations of the research based on community activities at the river. The ... -
Keanekaragaman dan Distribusi Plankton di Perairan Muara Desa Belawan I Kecamatan Medan Belawan
(Universitas Sumatera Utara, 2015)The diversity and distribution of plankton and its correlation to the physical and chemical parameter of water in the estuary of the village of Belawan I, sub-district of Medan Belawan was studied from September to ... -
Isolasi Bakteri Endofit dari Akar Tanaman Tomat (Solanum lycopersicuml.) dan Uji Kemampuannya dalam Mendegradasi Insektisida Berbahan Aktif Karbofuran
(Universitas Sumatera Utara, 2015)The study on isolation endophytic bacteria from tomato root (Solanum lycopersicum L.) and test of their ability in degrading carbofuran has been conducted. Eight bacterial isolates were obtained using Nutrient Agar ... -
Jenis dan Tingkat Infeksi Cacing Endoparasit pada Feses Sapi di Rumah Potong Hewan (RPH) Medan dan Kecamatan Andam Dewi Kabupaten Tapanuli Tengah
(Universitas Sumatera Utara, 2014)Research the type and level of endoparasitic helminth infections carried out by using the method of purposive random sampling feces in the field, and sedimentation method, for the determination of the number and type ... -
Pengaruh pH dan Perubahan Temperatur terhadap Pembentukan Spora Bacillus sp. BK17
(Universitas Sumatera Utara, 2014)Bacterial spores are the surviving structure under unfavourable physical and chemical conditions. Bacillus sp. BK17 is a spore forming bacteria that has been reported to have an ability to inhibit the growth of various ... -
Pengaruh Pemberian Ekstrak N-Heksan Buah Andaliman (Zanthoxylum acanthopodium DC.) terhadap Gambaran Histologis Limpa Mencit (Mus musculus L.) Strain DDW
(Universitas Sumatera Utara, 2014)This research has been conducted in Laboratory of Animal Structure, Biology USU using a completely randomized design consisting of a control blank which untreated, solvent controls were given 1% CMC and the treatment ... -
Isolasi dan Uji Antifungi Bakteri Endofit Tanaman Padi (Oryza sativa L.) dan Jagung (Zea mays L.) terhadap Rhizoctonia solani
(Universitas Sumatera Utara, 2014)Isolation and antifungal essay of endophytic bacteria from paddy and corn has been conducted. There were eight and five endophitic bacterial isolates from corn and paddy, respectively. All corn isolates and three paddy ... -
Ketahanan Tanaman Terung Belanda (Solanum betaceum Cav) setelah Diinduksi dengan Sinar UV terhadap Colletotrichum sp.
(Universitas Sumatera Utara, 2013)The of resistance of tamarillo (Solanum betaceum Cav) after UV induction to Colletotrichum sp. has been done from February to December 2012 at Biology Departement, Faculty of Mathematic and Natural Science and Greenhouse ... -
Pengaruh 2,4-D dan Frekuensi Subkultur terhadap Perubahan Genetik Kultur Apikal Bud Kelapa Sawit (Elaeis Guineensis Jacq.) pada Media MS
(Universitas Sumatera Utara, 2014)The study of the effect of 2,4-D and subculture frequency on the genetic changes on the apical bud of oil palm in the MS medium has been carried out.The research method was designed according to Completely Randomized ... -
Viabilitas Bakteri Asam Laktat dalam Enkapsulasi Sinbiotik terhadap Penyimpanan dan Asam Lambung Tiruan
(Universitas Sumatera Utara, 2015)Probiotics are living microorganisms that provide health benefits to the host. Probiotics in the form of free-cells may decrease cell viability against environmental influences. This study aimed to get the lactic acid ... -
Pengaruh Cekaman Kekeringan terhadap Produktivitas Kedelai (Glyicine max (L.)Merril.) Hasil Radiasi Ultraviolet
(Universitas Sumatera Utara, 2013)The effect of drought stress to soybean productivity has been done in Genetic Laboratory, Natural Sciences Faculty and green house at Agriculture Faculty, University of Sumatera Utara, Medan. The experiment design was ...