School of Materials Engineering (Articles): Recent submissions
Now showing items 81-100 of 560
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Comparison of original and sintered LUSI mud from East Java, Indonesia as raw material for making a geopolymer
(American Scientific Publishers, 2013-01)This paper presents the characterization of LUSI mud from East Java, Indonesia, as a potential raw material for making a geopolymer. Two types of LUSI mud were analyzed, i.e., original LUSI mud and LUSI mud that had been ... -
Synthesis and characterization of pure magnesium/bio-glass composite
(Trans Tech Publications, 2013)In this study, bio-glass 45S5 powder was added to pure magnesium powder to produce the magnesium/bio-glass composite by powder metallurgy method. The composite was synthesized based on 5 wt. %, 10 wt. % and 15 wt. % of ... -
Ferroelectric and relaxor ferroelectric to paralectric transition based on Lead Magnesium Niobate (PMN) materials
(Trans Tech Publications, 2013)First ferroelectric materials were found in Rochelle salt was in a perovskite structure. Lead Magnesium Niobate (PMN) is a perovskites with a formula of PbMg1/3Nb2/3O3 (PMN) and are typical representatives for most of all ... -
Electrical properties of fresnoite Ba2TiSi2O8 using impedance spectroscopy
(Trans Tech Publications, 2013)Fresnoite with composition Ba2TiSi2O8 (B2TS2) was first found in 1965, adopting a non-centrosymmetric structure. It also reported to crystallize in a tetragonal unit cell with a=8.52Å and c=5.210Å leading to some possible ... -
A simple one-step anodising method for the synthesis of ordered porous anodic alumina
(Taylor & Francis, 2014)Porous anodic alumina (PAA) has been produced on aluminium substrate by single-step anodising at 50 V in 0.3 M oxalic acid at 15°C for 60 min. The highly ordered pore and cell structure was achieved by subjecting the PAA ... -
Adsorption behavior of cationic and anionic dyes onto acid treated coconut coir
(Taylor and Francis Group, LLC., 2013-09)The adsorption of Methylene Blue (MB) and Acid Orange 7 (AO7) from aqueous solutions by acid treated coconut coir was investigated under laboratory conditions to assess its potential in removing cationic and anionic dyes. ... -
Electronic structure, electronic charge density and optical properties of 3-methyl-1,4-dioxo-1, 4-dohydronaphthalen-2-yl-sulfanyl (C₁₃H₁₀O₄S)
(ESG, 2014)The atomic positions of 3-methyl-1,4-dioxo-1, 4-dohydronaphthalen-2-yl-sulfanyl (3MDS) single crystal taken from XRD data were optimized by minimizing the forces. We make use of the optimized geometry as a starting point ... -
Thermoelectric properties, effective mass, chemical bonding, and optical properties of 1,3,6-trimetylo-alloxazine: C₁₃H₁₂N₄O₂
(ESG, 2014)The thermoelectric properties, electronic band structure, density of states, chemical bonding, optical properties, electrons and holes effective mass of 1,3,6-trimetylo-alloxazine are calculated by using the full potential ... -
Structural, electronic and optical properties in earth-abundant photovoltaic absorber of Cu₂ZnSnS₄ and Cu₂ZnSnSe₄ from DFT calculations
(ESG, 2014)DFT analyses of band structure dispersion and of contribution of different anionic sub-groups to the studied electronic structure together with the anisotropy of optical functions were performed for the two promising solar ... -
Zn-Sn based high temperature solder - A short review
(Trans Tech Publications, 2013)The developments of lead-free solders have become a major concern to the researchers in electronic industry to replace the lead-containing materials. The concern is not just for low temperature solders but also for high ... -
Influence of mechanical alloying on dielectric features of ferroelectric BaTio₃ microcrystals
(ESG, 2014)Dielectric features of BaTiO₃ microcrystals made by mechanical alloying method in the ball mill of SPEX 8000 are studied. Temperature and hysteresis loops are investigated and Curie temperature as well as dielectric constant ... -
Mineralization of Methyl Orange-containing wastewater by integrated anaerobic and aerobic processes using spent granular activated carbon-biofilm under sequencing batch reactor operation
(Taylor & Francis, 2013)Mineralization of azo dye required combination of anaerobic and aerobic processes either in two stages or single stage of treatment. The aim of the present study was to evaluate the treatment performance in the decolorization ... -
The tensile properties and morphology analysis of recycled mattress filled natural rubber compounds
(AENSI Publisher All rights reserved, 2013-10)The tensile properties and morphology analysis of Recycled Mattress (rMat) filled Standard Malaysian Rubber (SMR L) and Epoxidized Natural Rubber (ENR 50) was successfully studied. The both compounds were prepared by two ... -
Roles of imputation methods for filling the missing values: A review
(AENSI Publisher All rights reserved, 2013-10)Missing data are often encountered in many areas of research. Complete case analysis and indicator method can lead to serious bias. One of the comforting methods is implementation of imputation methods. The main purpose ... -
The effect of shear rate and temperature on rheology properties of magnesium metal injection molding feedstock
(Praise Worthy Prize S.r.l., 2013-11)Metal injection molding (MIM) becomes a well-established and promising technology for small and mass production. Feedstock characterization is one of the most important roles in ensuring the properties of the MIM products. ... -
Strength of the weld line and warpage defects on the molded parts in injection molding process
(Praise Worthy Prize S.r.l., 2013)Strength at weld the line location and warpage problem in injection molding plastic component were not new problems in injection molding industries. Many researchers had emerged with several improvement techniques to reduce ... -
Effects of sodium hydroxide treatment on the properties of low-density polyethylene composites filled with chicken feather fiber
(John Wiley & Sons, Inc./Society of Plastics Engineers (SPE), 2014)The effects of alkali treatment with sodium hydroxide on the tensile properties, morphology, thermal degradation, and mass swell of low-density polyethylene (LDPE)/(chicken feather fibers (CFF)) composites were studied. ... -
Microstructure studies on the effect of the alkaline activators of fly ash-based geopolymer at elevated heat treatment temperature
(Trans Tech Publications, 2013)Fly ash-based geopolymers are new binding materials produced to replace the ordinary Portland cement (OPC) used in concrete. In this research, the effect of alkaline activators on the compressive strength and the microstructure ... -
Evaluation of integrated anaerobic-aerobic biofilm reactor for degradation of azo dye methyl orange
(Elsevier Ltd., 2013-09)This study was to investigate the mineralization of wastewater containing methyl orange (MO) in integrated anaerobic-aerobic biofilm reactor with coconut fiber as bio-material. Different aeration periods (3. h in phase 1 ... -
Density functional theory calculation of the optical properties and topological analysis of the electron density of MBi2B 2O7 (M = Ca,Zn) compounds
(American Institute of Physics, 2013-02)The topology of the electron density for congruent melting oxyborate Bi2ZnOB2O6 and CaBi2B 2O7 is studied in light of the theory of atoms in molecules. All the electron density critical points in the unit cell are ...