Ditemukan 3470 dokumen yang sesuai dengan query
Mohamed El-Sakhawy, author
The antimicrobial properties of bagasse paper sheets coated with
natural polymers (chitosan, different ratios of (gelatin/glycerol) + chitosan,
hemicellulose, hemicellulose + glycerol, hemicellulose+chitosan) or
synthetic organophosphorus dimer compounds were evaluated in this work.
Hemicelluloses showed moderate activity against Bacillus subtilis and Candida albicans, while chitosan showed weak
activity against B. subtilis. The condition that offered...
2016
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Artikel Jurnal Universitas Indonesia Library
Azizollah Khormali, author
As a result of
waterflooding, inorganic salt precipitation occurs in the different parts of an
oil production system, thereby leading to damage of production equipment.
Different parameters affect the kinetics of salt precipitation. Scale
inhibitors are widely used to prevent inorganic salt formation. In this study,
the effect of reservoir pressure, temperature, and mixing ratio...
2016
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Artikel Jurnal Universitas Indonesia Library
Fachryan Zuhri, author
The microbial desalination cell (MDC) is a modification of the microbial fuel cell (MFC) system. The microbial desalination cell is a sustainable technology to desalinate saltwater by directly utilizing the electrical power generated by bacteria during the oxidation process of organic matter. In this study, tempe wastewater will be used...
2016
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Artikel Jurnal Universitas Indonesia Library
Abdul Wahid, author
A multi model
predictive control and proportional-integral controller switching (MMPCPIS)
approach is proposed to control a nonlinear distillation column. The study was
implemented on a multivariable nonlinear distillation column (Column A). The
setpoint tracking and disturbance rejection performances of the proposed
MMPCPIS were evaluated and compared to a proportional-integral
(PI) controller and the hybrid controller (HC)....
2016
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Artikel Jurnal Universitas Indonesia Library
W. Widiyastuti, author
Nanostructured zincoxide (ZnO) was synthesized via a sonochemical method. The effect of the duration of ultrasonic irradiation in a continuous mode on the generated particles was investigated. Additionally, the effect of flowing either air or nitrogen during the sonication process was investigated. Zinc nitrate and
ammonia water-based solutions were selected as...
2016
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Artikel Jurnal Universitas Indonesia Library
S. Abdulkareem, author
This paper reports on
the investigation of thermal properties of Kapok, Coconut fibre and Sugarcane
bagasse composite materials using molasses as a binder. The composite materials were moulded into
12 cylindrical samples using Kapok, Bagasse, Coconut fibre, Kapok and Bagasse
in the ratios of (70:30; 50:50 and 30:70), Kapok and Coconut fibre in the
ratios...
2016
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Artikel Jurnal Universitas Indonesia Library
Gowri Shankar, author
The present work aims to improve the microstructure and hardness related
properties of age hardened Al6061-SiC reinforced composites produced by a two stage stir casting method. Three composites with
2, 4, and 6wt. % (35-40μm) of SiC reinforcement are subjected to
microstructural examination and hardness test at different locations to analyse
the uniform distribution...
2016
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Artikel Jurnal Universitas Indonesia Library
Donanta Dhaneswara, author
Santa Barbara
Amorphous-15 (SBA-15) is an
interesting mesoporous silica material with highly ordered nanopores and a
large surface area. Due to its unique properties, this material has been widely
employed in many areas. This study aimed to predict the number of nanopores per
gram of SBA-15 material based on an optimum value of surfactant addition...
2016
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Artikel Jurnal Universitas Indonesia Library
Erlina Yustanti, author
Barium strontium titanate (BST) or Ba1-xSrxTiO3 with x=0-1 possesses superior dielectric properties, which are widely used in many applications like in communication technology, electronic instrumentations, and various electrical devices. In this paper, the characterization of the particle and crystallite size of Ba1-xSrxTiO3 (x: 0; 0.3; 0.7) is described. A two-step...
2016
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Oil palm empty fruit bunch (OPEFB) is one of the waste products of oil palm plantations and has not been optimally used in Riau Province, Sumatera, Indonesia. OPEFB is reduced by incineration, which causes pollution problems. However, the combustion of OPEFB generates ash, which is rich in potassium. Moreover, OPEFB...
2016
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
