Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 1-10 of 11051
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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 dari Digraph Dwiwarna Asimetrik yang memuat Cycle Primitif
(Universitas Sumatera Utara, 2008)Suatu digraph dwiwarna adalah sebuah digraph dengan setiap arcnya terwarnai,merah atau biru. Sebuah digraph dwiwarna D dikatakan terhubung kuat bila ada bilangan tak negatif h dan k sehingga untuk setiap pasangan verteks ... -
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 ... -
Adhesi Penguat Serbuk PULP Tandan Kosong Sawit Teresterifikasi dengan Matriks Poletilena
(Universitas Sumatera Utara, 2009)Pulp Tandan kosong sawit (TKS) yang berasal dari limbah tandan kosong sawit mengandung lignoselulosa yang cukup tinggi dapat dimanfaatkan sebagai penguat komposit Polietilena (PE). Namun adhesi antara pulp TKS di dalam ... -
Adisi HCl pada Karotenoid dengan Menggunakan Katalis PdCl2
(Universitas Sumatera Utara, 2010)Catalytic addition of dry HCl to carotenoid using PdCl2 as the catalyst has been carried out. Dry HCl was prepared from HCl ( 36% ) and concentrated H2SO4 ( 98% ). The carotenoids used was previously enriched to 3452 ppm ... -
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). ...