Ditemukan 9 dokumen yang sesuai dengan query
Nasruddin, author
Cooling systems in tropical countries consume a large part of energy usage in a building, especially in a tropical climate, which places a high demand on cooling systems throughout the year. This paper presents a simulation of a two-bed silica gel-water adsorption chiller, utilizing solar energy based in the tropical...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:4 (2015)
Artikel Jurnal Universitas Indonesia Library
Zulkarnain Jalil, author
Magnesium-based hydrogen storage alloy is one of the most attractive hydrogen storage materials for fuel cell-powered vehicle application. However, a high desorption temperature and slow kinetics limit its practical application. Extensive efforts are required to overcome these problems, one of which is inserting a metal oxide catalyst. In this work,...
2016
J-Pdf
Artikel Jurnal Universitas Indonesia Library
Ike Setyorini, author
Silica combine with carbon black was successfully applied in natural rubber hybrid composites. The processability of those composites were evaluated through assessment of Mooney viscocity, time to scorch, cure characteristic, reversion tendency and viscous to elastic (V/E) ratio. Types of silica employes in this research were local silica and Zeosil....
Yogyakarta: Balai Besar Kulit, Karet, dan Plastik, 2016
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Lee D. Wilson, author
The adsorption properties of surface-modified mesoporous silica materials containing ?-cyclodextrin (CD ICS) were studied using two types of gas phase adsorbates (N2 and CH3Cl), along with a dye molecule (p-nitrophenol; PNP) in an aqueous solution. The CD ICS materials possess an ordered silica mesostructure framework that depends on the type...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:4 (2015)
Artikel Jurnal Universitas Indonesia Library
Zulkarnain Jalil, author
Magnesium-based hydrogen storage alloy is one of the most attractive hydrogen storage materials for fuel cell-powered vehicle application. However, a high desorption temperature and slow kinetics limit its practical application. Extensive efforts are required to overcome these problems, one of which is inserting a metal oxide catalyst. In this work,...
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 7:8 (2016)
Artikel Jurnal Universitas Indonesia Library
Andriayani, author
We carried out silicon extraction from the natural resources of Tanjung Tiram Asahan, Batu Bara Regency, North Sumatra through variation of heating temperatures and magnesiothermic reduction. Prior to the extraction, the sand from the natural resource was refined until the solid white silica powder was separated. The reaction conditions were...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:7 (2015)
Artikel Jurnal Universitas Indonesia Library
Asep Handaya Saputra, author
The electronic industry’s need for semiconductor material is increasing each year due to technology’s rapid development. Semiconductor material has an electric conductivity of approximately 10-8-103 S/cm, and it is used as an important component in electronic devices. Semiconductor material is generally made of plastic modified with conductive filler. The problem...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:7 (2015)
Artikel Jurnal Universitas Indonesia Library
Yanuar, author
Silica sand slurry is a multiphase flow that consists of liquid and particle solids. Slurry flow characteristics are affected by particle size, particle distribution, particle concentrate, pipe geometry, flow regime, and viscosity factors. Spiral pipe is one of the solutions to increase drag reduction at a certain velocity and Reynolds...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:6 (2015)
Artikel Jurnal Universitas Indonesia Library
H Aripin, author
This investigation presents the synthesis procedure and the results of an investigation of the crystallite growth of TiO2 and the formation of Si–O–Ti bonds in novel silica xerogel (SiO2) glass ceramic produced from an amorphous SX derived from sago waste ash. The composition had been prepared by adding various amounts...
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:8 (2017)
Artikel Jurnal Universitas Indonesia Library
