Browsing Faculty of Mathematics and Natural Sciences by Type "Skripsi Sarjana"
Now showing items 1-20 of 4949
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0-1 Programming Menentukan Shortest Path yang Memenuhi Kendala
(Universitas Sumatera Utara, 2009)This article studies about applying of 0-1 Programmings in looking for a shortest path constraint which is problem knapsack in the network. Problem that is often emerges in this network for example to look for shortest ... -
1,2-Dimetil-1,1,2,2-Tetrafenildisilana Sulfonat Mengkatalisis Reaksi Esterifikasi Asam Palmitat dengan 2-Butanol
(Universitas Sumatera Utara, 2014)2-butyl palmitate has been synthesized by reacting palmitic acid and 2-butanol at 100 ° C for 10 hours and at a temperature of 150oC for 15 hours using 1,2-dimethyl- 1,1,2,2-tetrafenil disilan sulfonate catalyst with ... -
1,2-dimetil-1,1,2,2-tetrafenildisilana Sulfonat Mengkatalisis Reaksi Esterifikasi Asam Stearat dengan Metanol dan 2-propanol
(Universitas Sumatera Utara, 2014)Esterification reaction between stearic acid with methanol and 2-propanol using 1,2-dimethyl-1,1,2,2-tetraphenyldisilane sulfonate as catalyst have gave methyl stearate and isopropyl stearate. Esterification reaction was ... -
1,2-Dimetil-1,1,2,2-Tetrafenildisilana Sulfonat sebagai Katalis Reaksi Transesterifikasi Cpo (Crude Palm Oil) Berkadar Asam Lemak Bebas Tinggi untuk Menghasilkan Biodiesel
(Universitas sumatera Utara, 2014)Transesterification of crude palm oil ( CPO ) with 7,82 % free fatty acids has been done by using 1,2-dimethyl-1,1,2,2-tetraphenyl-disilane sulfonated as a catalyst with different temperature and reusability of the ... -
2 Eksponen dari 2-Digraph dengan Loop
(Universitas Sumatera Utara, 2007)On 2-digraph D, 2-exponent being defined as smallest integer h+k therefore for every pairs of vertex u and v in D there is walk from u to v with legth h + k consist of h red arc and b blue arc. 2-exponent from 2-digraph ... -
2-Eksponen Digraph Dwiwarna Asimetrik dengan Dua Cycle yang Bersinggungan
(Universitas Sumatera Utara, 2009)Let D be a asymmetric two-colored digraph on n = 2m, m 4 vertices which have a common vertex and the length of each cycles is m and m + 1. Since D is asymmetric, there exists two cycles of length m are denoted by γ1 and ... -
Adsorben Berbasis Zeolit Alam Pahae-Karbon Aktif Kulit Pisang Kepok sebagai Pereduksi Salinitas Air Laut
(Universitas Sumatera Utara, 2024)Research on zeolite-activated charcoal based adsorbent of kepok banana peel as seawater reducer has been conducted. Zeolite as matrix and kepok banana peel activated charcoal as filler with powder size of 149 μm (100 mesh). ... -
Adsorpsi Asam Lemak Bebas dari CPO dengan Menggunakan Adsorben Kalsium Silikat Bertemplate Glukosa
(Universitas Sumatera Utara, 2018)Research has been conducted about using calcium silicate adsorbent (CaSiO3) glucose template on adsorption of free fatty acid on crude palm oil by adsorption method. This research aims to reduce of free fatty acid on ... -
Adsorpsi Asam Lemak Bebas dari Minyak Sawit Mentah Menggunakan Adsorben Kalsium Silikat (CaSiO3) Template Gliserol
(Universitas Sumatera Utara, 2018)Research has been conducted on the reduction of free fatty acid content in crude palm oil by adsorption method using calcium silicate adsorbent (CaSiO3) glycerol template. The experimental results show that CaSiO3 template ... -
Adsorpsi Karotenoida dari Minyak Sawit Mentah (CPO) Menggunakan Kalsium Polistirena Sulfonat Berderajat Sulfonasi 27% dan Desorpsinya dengan Etanol
(Universitas Sumatera Utara, 2015)Carotenoids have adsorbed from Crude Palm Oil it consist of 455 ppm carotene with calcium polystyrene sulfonate, degree of sulfonation 27% contains of Ca 6,74. Carotenoids that adsorbed in calcium polystyrene sulfonate ... -
Adsorpsi Logam Pb pada Adsorbent Berbasis Karboksimetil Selulosa dan Hidroksipropil Metil Selulosa dengan Divinil Sulfon sebagai Agen Ikat Silang
(Universitas Sumatera Utara, 2025)This study examines the adsorption process of Pb metal on adsorbents based on carboxymethyl cellulose (CMC) and hydroxypropyl methyl cellulose (HPMC) with divinyl sulfone (DVS) as a crosslinking agent. The adsorbent was ... -
Adsorpsi Zat Warna Congo Red menggunakan Adsorben Berbahan Dasar Pati Sagu dan Karboksimetil Selulosa Menurut Persamaan Langmuir dan Freundlich
(Universitas Sumatera Utara, 2024-12-30)Research on adsorbents from sago starch and carboxymethyl cellulose with aluminum sulfate and boric acid cross-binding agents applied to the adsorption of congo red dye. This study aims to determine the equilibrium time ... -
Aklimatisasi Planlet Kentang (Solanum Tuberosum L.) Varietas Granola pada Beberapa Media Tanam dan NPK
(Universitas Sumatera Utara, 2024)Research on the Acclimatization of Potato Plantlets Granola Varieties in Several Planting Media and NPK was carried out from December 2023 to May 2024 in the Greenhouse of the Faculty of Agriculture and the Laboratory ... -
Aktivitas Antagonis Hendersonia sp. dan Aspergillus sp. dalam Menghambat Pertumbuhan Ganoderma boninense pada Kelapa Sawit (Elaeis guineensis)
(Universitas Sumatera Utara, 2024)Ganoderma disease is very important to be handled seriously. There are many efforts have been made to quell ganoderma disease, including utilization of biological control agents that are antagonistic to Ganoderma boninense ... -
Aktivitas Anti Bakteri Pada Pembuatan Minuman Sehat dengan Menggunakan Kitosan Larut Air dan Vitamin C
(Universitas Sumatera Utara, 2022)Research on water-soluble chitosan was produced from commercial chitosan depolymerization and then used as an antibacterial agent in healthy drinks. It consisted of two stages. The first stage of modification of commercial ... -
Aktivitas Antibakteri dari Sabun Transparan yang ditambahkan Avocado Oil dan Ekstrak Bunga Telang (Clitoria Ternatea)
(Universitas Sumatera Utara, 2022)Butterfly pea flowers contain secondary metabolites, one of which is antibacterial, because it has potential as an alternative to antibiotics. The purpose of the research was to increase the function of transparent soap ... -
Aktivitas Antibakteri Edible Film dari Pati Tapioka yang di Inkorporasi dengan Minyak Atsiri Daun Attarasa [Litsea Cubeba(Lour.) Pers.]
(Universitas Sumatera Utara, 2010)Isolation of the attarasa leaves [Litsea cubeba (Lour.) Pers.] essential oil has been research by distillation with stahl instrument and and antibacterial activity test with agar diffusion method. Attarasa oil on ... -
Aktivitas Antimikroba dari Ekstrak Daun Surian (Toona sureni Merr.) terhadap Streptococcus mutans dan Candida Albicans
(2018)Toona sureni Merr. (surian) is a medicinal plant for diarrhea and dysentery. The purpose of this study was to determine the ability of methanol, ethyl acetate, and surian leaves n-hexane to inhibit Streptococcus mutans and ... -
Aktivitas Antimikroba Ekstrak Etanol Batang dan Daun Evodia (Euodia ridleyi Horch.) terhadap Pertumbuhan Streptococcus mutans, Shigella dysenteriae dan Candida albicans secara in Vitro
(Universitas Sumatera Utara, 2013)In vitro antimicrobial activity of ethanol stems and leaves extract of Evodia (Euodia ridleyi Horch.) has been conducted. The purpose is to study component of secondary metabolites stems and leaves extract of Euodia ... -
Aktivitas Antimikroba Ekstrak Etanol Daun dan Bunga Tahi Ayam (Tagetes erecta Linn.) terhadap Pertumbuhan Streptococcus mutans, Shigella dysenteriae dan Candida albicans secara in Vitro
(Universitas Sumatera Utara, 2013)In vitro antimicrobial activity of ethanol leaves and flower extract of tahi ayam (Tagetes erecta Linn.) against growth of Streptococcus mutans, Shigella dysenteriae and Candida albicans has done. The purpose is to study ...