Department of Biology: Recent submissions
Now showing items 361-380 of 1294
-
Analisis Vegetasi dan Identifikasi Tumbuhan Asing Invasif di Taman Wisata Alam (TWA) Sicike-Cike Sumatera Utara
(Universitas Sumatera Utara, 2022)Invasive alien plants are plant species that native species and diversity of plants species. The aims of the study were to analyze sustainability of tree vegetation types, demographic analysis of Rhododendron malayanum in ... -
Uji Ekstrak Daun Afrika (Vernonia Amygdalina Del.) terhadap Nilai Hematologi Mencit (Mus Musculus L.) Model Diabetes
(Universitas Sumatera Utara, 2022)Research the effect of Daun Afrika (Vernonia amygdalina Del.) leaf extract on the hematological value of mice (Mus musculus L.) induced by streptozotocin was carried out from May 2022 to August 2022. African leaves (Vernonia ... -
Deteksi Virus Gemini pada Tanaman Tomat (Solanum Lycopersicum Mill.) di Kabupaten Simalungun Sumatera Utara dengan Teknik Pcr
(Universitas Sumatera Utara, 2022)Geminivirus is a type of virus that attacks tomato plants. The symptoms of the disease caused by the Geminivirus are difficult to distinguish morphologically from other viruses, therefore the Polymerase Chain Reaction (PCR) ... -
Fitososiologi Pohon di Kawasan Suaka Margasatwa Siranggas, Kabupaten Pakpak Bharat, Sumatera Utara
(Universitas Sumatera Utara, 2023)Siranggas Wildlife Sanctuary is a conservation area in the lower mountainous area that has various types of trees, but this location is an area that is vulnerable to damage due to exploitation. The purpose of this study ... -
Gambaran Histologis Hepar Mencit (Mus Musculus L.) Model Diabetes Tipe-2 Setelah Pemberian Ekstrak Etanol Daun Afrika (Vernonia Amygdalina Del.)
(Universitas Sumatera Utara, 2022)An experiment of the histological profile of the mice’s liver (Mus musculus L.) suffered of type-2 diabetes model and applied by African leaf extract (Vernonia amygdalina Del.) was carried out from May to August 2022. This ... -
Jenis-Jenis Arecaceae di Kawasan Suaka Margasatwa Siranggas Kabupaten Pakpak Bharat Sumatera Utara
(Universitas Sumatera Utara, 2023)The Siranggas Wildlife Sanctuary area is one of the tropical forests in North Sumatra that is rich in plant species, one of which is the Arecaceae tribe, but it is not yet known how many types there are. The Siranggas ... -
Keanekaragaman Jenis Tumbuhan Bawah di Kawasan Suaka Margasatwa Siranggas Kabupaten Pakpak Bharat Sumatera Utara
(Universitas Sumatera Utara, 2022)Siranggas Wildlife Sanctuary is a natural reserve forest that has various species of understories in terms of the structure of the forest constituents, but the diversity of understory in the region has never been known. ... -
Kelimpahan Insekta Polinator (Elaeidobius Kamerunicus Faust.) di PT Perkebunan Nusantara Iv Gunung Bayu, Kabupaten Simalungun Sumatera Utara
(Universitas Sumatera Utara, 2023)Weevil Elaeidobius kamerunicus Faust is a pollinator insect that breeds and feed only on male inflorescences of oil palm. The body size of pollinator insects is an important factor influencing the effectiveness of pollination. ... -
Efek Ekstrak Daun Afrika (Vernonia Amygdalina Del.) terhadap Kadar Gula Darah dan Gambaran Histologi Pankreas pada Mencit (Mus Musculus L.) Model diabetes
(Universitas Sumatera Utara, 2023)The Research on the effect of Afrika (Vernonia amygdalina Del.)leaf extract on blood sugar levels and pancreatic histology in mice (Mus musculus L.) diabetic model was conducted from May to August 2022. Afrika leaf plants ... -
Kontribusi Epifit Terhadap Kelimpahan Serangga Kanopi Pada Perkebunan Kelapa Sawit di Sumatera Utara
(Universitas Sumatera Utara, 2016)Vascular epiphytes was a member of the community of oil palm plantations which have received less attention. These herbs also improve biodiversity in oil palm plantations, in addition it also provides habitat and food ... -
Distribusi Altitudinal Suku Arecaeae di Kawasan Hutang Gunung Sinabung Kabupaten Karo Sumatera Utara
(Universitas Sumatera Utara, 2008)A study on Distribution altitudinal Arecaceae in Mount Sinabung forest were conducted in January to Maret 2008. Sampling area was settled by using porpusive sampling method, and divided to six location based on their ... -
Organogenesis dari Kelapa Sawit Asal Eksplan Tunas Pucuk (Apical Bud)
(Universitas Sumatera Utara, 2014)The purpose of this research is to find out explants apical bud from oil palm of different position which are apex, middle, and basal segment, were cultured in Y3 medium suplemented with 2,4-D in the presence of activated ... -
“Pengaruh Pemberian Ekstrak Buah Lada Hitam (Piper nigrum L.) terhadap Pigmen Melanin Kulit Mencit (Mus Musculus L.) Hitam Model Vitiligo
(Universitas Sumatera Utara, 2022)Black pepper fruit contains piperine compounds which may be responsible for producing skin pigmentation. This study aims to determine the effect of using blackpepper fruit extract on the extent of vitiligo, percent ... -
Keanekaragaman dan Kelimpahan Ikan Serta Keterkaitannya dengan Kualitas Perairan d Danau Toba
(Universitas Sumatera Utara, 2008)The diversity and abundance of fish and the relation with the physical and chemical in Lake Toba, has been analyzed in January 2008 - April 2008. In order to determine sample location is using "Purpose Random Sampling" and ... -
Studi Ekotaksonomi Anggrek Tanah di Sekitar Danau di Taman Wisata Alam Sicikeh-cikeh Kabupaten Dairi Sumatera Utara
(Universitas Sumatera Utara, 2009)A study on Ecotaksonomy of Ground Orchid (Terrestrial Orchid) at Sicikeh- cikeh Natural Park Dairi North of Sumatera Utara were conducted in October 2008 to February 2009. Sampling area was settled by using purposive ... -
Toksonomi dan Distribusi Haramonting (Rhodomyrtus tomentosa Aiton) di Sumatera Utara Bagian Selatan
(Universitas Sumatera Utara, 2015)The research about morphology and distribution of haramonting (Rhodomyrtus tomentosa) was carried out in December 2013- August 2014 in Southern area Of Sumatera Utara Province. Study location are Labuhan Batu ... -
Efek Proteksi Kitosan Terhadap Lambung dan Limpa Tikus Putih (Rattus norvegicus) yang dipapar Plumbum Asetat
(Universitas Sumatera Utara, 2013)The plumbum pollution is one of environment pollution in every country. The plumbum in the body will affect to the spleen and gastric. Chitosan’ is an antioxidant that can reduce or absorb heavy metals, so the purpose ... -
Kajian Liken di Kota Medan dan Deli Serdang Sebagai Bioindikator Kualitas Udara
(Universitas Sumatera Utara, 2017)Lichens is symbiosis between fungi and algae or fungi and cyanobacteria or both of them. Lichens is still under researched in Indonesia especially in North Sumatra. While in the other countries such as America, India, ... -
Keanekaragaman dan Potensi Regenerasi Hutan Aek Nauli Kabupaten Simalungun
(Universitas Sumatera Utara, 2011)This study aimed to know the structure of vegetation and potency in reforesting the Aek Nauli Forest of Simalungun. The research was conducted in January 2011 with compartment line. It was found 36 families and 106 sorts ... -
Studi Taksonomi Nepenthes di Sumatera Utara
(Universitas Sumatera Utara, 2011)Taxonomic study of Nepenthes in North Sumatera has been studied from February until August 2011 using survey method and anatomical variation was studied using simple scraping technique method There are 32 species of ...