Ditemukan 3217 dokumen yang sesuai dengan query
Fitri Yuli Zulkifli, author
Antenna can be one of the largest components in a wireless device; therefore antenna miniaturization can reduce the overall size of wireless devices. One method used to reduce the element size of an antenna is by using metamaterial structures. This paper discusses a Left-Handed Metamaterial (LHM) structure stacked on a...
2016
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Artikel Jurnal Universitas Indonesia Library
K. Aparna, author
Data clustering is one
of the major areas in data mining. The
bisecting clustering algorithm is one of the most widely used for high
dimensional dataset. But its performance
degrades as the dimensionality increases.
Also, the task of selection of a cluster for further bisection is a
challenging one. To overcome these
drawbacks,...
2016
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Artikel Jurnal Universitas Indonesia Library
Retno Wigajatri Purnamaningsih, author
We propose a simple design of 1×3 optical power splitter which uses gallium nitride (GaN) on sapphire. The design consists of widely used large cross section input rib waveguide, a rectangular multimode interference (MMI) structure, and three-branch rib waveguides. The MMI structure is selected since their attractive performances, such as...
[place of publication not identified]: [publisher not identified], 2016
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Benyamin Kusumoputro, author
Cylindrical uranium dioxide pellets, which are the main components for nuclear fuel elements in light water reactors, should have a high density profile, a uniform shape, and a minimum standard quality for their safe use as a reactor fuel component. The quality of green pellets is conventionally monitored by laboratory...
2016
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Nji Raden Poespawati, author
An active Radio-Frequency Identification (RFID) tag is a low-power device, which is often used as a tracking device, where operation of this tag will be in remote areas from an electrical power source. Therefore, this device requires an independent power source. To meet these needs, solar power may be used,...
[place of publication not identified]: [publisher not identified], 2016
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Nazia Hossain, author
Commercialization of
bioethanol has recently intensified due to its market stability, low cost,
sustainability, alternative fuel energy composition, greener output and
colossal fossil fuel depletion. Recently, because of greenhouse intensity
worldwide, many researches are ongoing to reprocess the waste as well as
turning down the environmental pollution. With this scenario, the invention of
bioethanol was hailed...
2017
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Artikel Jurnal Universitas Indonesia Library
Agus Mirwan, author
The kinetics of aluminum
leaching from sludge solid waste (SSW) using hydrochloric acid at different
leaching temperatures (30-90°C) was studied. A mathematical model was developed based on a
shrinking core model by assuming first-order kinetics mechanisms for leaching
and an equilibrium linear at the solid-liquid
interface. The proposed model is suited to fit experimental data...
2017
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Artikel Jurnal Universitas Indonesia Library
Slamet, author
The photocatalytic degradation of methylcyclohexane (MCH) in two phases (aqueous and vapor) was examined using modified titania that was immobilized on pumice and performed in the system of a specific condition. The photodegradation system that used a particular configuration reactor and modified catalyst could facilitate the two-phase photodegradation of MCH...
2017
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Artikel Jurnal Universitas Indonesia Library
Nor Amira Othman, author
Molecularly imprinted polymers (MIPs) have been the most convenient and selected
methods in detection and extraction for many types of specific targets in various fields. MIPs
were prepared by mixing template molecule with functional monomer in the
presence of cross-linker, solvent and
initiator. The selectivity of MIPs is strongly influenced by the types of
functional...
2017
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Artikel Jurnal Universitas Indonesia Library
Atria Pradityana, author
In this work, Myrmecodia pendans, or sarang semut, was successfully extracted as a potential organic inhibitor. Various concentrations of Myrmecodia pendans extract in 1 M H2SO4 solution were applied in the range of 100?500 mg/L for corrosion inhibition. Gas chromatography?mass spectroscopy (GC-MS) showed that the Myrmecodia pendans extracts contained a...
2017
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Artikel Jurnal Universitas Indonesia Library
