Ditemukan 3470 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
J-Pdf
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
J-Pdf
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
J-Pdf
Artikel Jurnal Universitas Indonesia Library
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
PDF
Artikel Jurnal Universitas Indonesia Library
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
J-Pdf
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
J-Pdf
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
J-Pdf
Artikel Jurnal Universitas Indonesia Library
Suryadi, author
The present
study investigated the mechanical properties and microstructure of ultrafine
grained (UFG) brass processed by four passes of equal channel angular pressing
(ECAP) and annealed at elevated temperatures. The mechanical properties of all
samples were assessed using tensile and micro-hardness tests. Microstructure
analysis was performed using optical microscopy (OM) and scanning electron
microscopy (SEM). Ultimate...
2017
J-Pdf
Artikel Jurnal Universitas Indonesia Library
Adel Fisli, author
The main problem with the slurry process is the difficulty in recovering the photocatalyst nanoparticle from water following purification. An alternative solution proposed the photocatalyst be immobilized on magnetic carriers, which would allow them to be recollected from the water suspension following treatment using an external magnetic field. Magnetically photocatalyst...
2017
J-Pdf
Artikel Jurnal Universitas Indonesia Library
