Center of Excellence for Geopolymer and Green Technology (CEGEOGTECH) (Articles): Recent submissions
Now showing items 61-80 of 135
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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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Cu-SiCp composites as advanced electronic packaging materials
(Trans Tech Publications, 2014)The demand for advanced thermal management materials such as silicon carbide particles reinforced copper matrix (Cu-SiCp) composites is increasing due to the stringent design requirement in the electronic packaging industries. ... -
Low and high temperature isothermal aging effect on morphology and diffusion kinetics of intermetallic compound (IMC) for Sn-Cu-Si ₃N₄ composite solder
(Trans Tech Publications, 2014)The effect of excessive intermetallic growth to the reliability of solder joints become major problem in electronic devices industry. In this study, we used Sn-Cu-Si₃N₄ composite solder to observe the intermetallic compound ... -
Radiation shielding characteristics of concretes incorporates different waste materials
(Trans Tech Publications, 2014)Samples of concrete incorporate different waste materials such as iron filings, iron balls of used ball bearings and slags from steel industry were assessed for their anti-radiation attenuation coefficient properties. The ... -
Compressive strength of fly ash based geopolymer / glass fiber composite via filament winding
(Trans Tech Publications, 2014)In general, filament winding technique is used to fabricate the composite pipes using continuous fiber and matrix resin. In this study, fly ash based geopolymer resin composites reinforced by continuous glass fiber were ... -
Microstructure study on volcano ash geopolymer aggregate at different sintering temperature
(Trans Tech Publications, 2014)Recent research shows that the by-product materials such as fly ash can be used as raw material in producing aggregates and lightweight aggregates. The usage of this material can improve the quality of the aggregates ... -
Kenaf bast-unsaturated polyester composite: The effect of different alkaline treatment condition on tensile properties
(Trans Tech Publications, 2014)The biocomposites were prepared by using kenaf bast fiber mat as reinforcing materials at different percentage. The kenaf bast fiber was treated with alkaline at different sodium hydroxide (NaOH) percentage. Composites ... -
The effect of inoculation on properties of modified ductile Ni-resist alloy
(Trans Tech Publications, 2014)In this study, ductile Ni-resist alloy with a minimum 18 wt. % nickel composition was modified. Up to 12 wt. % manganese was added together with 10 wt. % nickel before undergoing the inoculation process at various percentages ... -
Effect on strength and hardness of clay ceramic substrate after treatment using koalin based geopolymer glaze
(Trans Tech Publications, 2014)Geopolymerization is an alternative for ceramic industry by using clay based material such as kaolin or calcined kaolin geopolymer. Geopolymer paste is initially produced by alkaline activation of calcined kaolin with NaOH ... -
The influence of cure characteristics and crosslink density of virgin acrylonitrile butadiene rubber/recycled acrylonitrile butadiene rubber (vNBR/rNBR) blends
(Trans Tech Publications, 2014)Cure characteristics and crosslink density of virgin acrylonitrile butadiene rubber/recycled acrylonitrile butadiene rubber (vNBR/rNBR) blends were studied. Three different size ranges of rNBR particles, i.e., 150 - 350 ... -
The effects of dynamic vulcanization in virgin polyethylene (vPE)/ recycled polyethylene (rPE)/ ethylene propylene diene terpolymer (EPDM) blends: Tensile properties and morphology
(Trans Tech Publications, 2014)The effects of dynamic vulcanisation in vPE/rPE/EPDM blends were studied. The discarded polyethylene used in the study was obtained from local cable manufacturers. The effects of different sulfur loading on the tensile ... -
Feasibility study on composition and mechanical properties of marine clay based geopolymer brick
(Trans Tech Publications, 2014)Geopolymer is an inorganic polymer performed in synthesis process of an aluminosilicate material which activated by alkaline activator solution. Marine clay, considered to be a waste substance which have an important ... -
Mean imputation techniques for filling the missing observations in air pollution dataset
(Trans Tech Publications, 2014)Almost all real life datasets consist missing values. These are usually due to machine failure, routine maintenance, changes in siting monitors and human error. The occurence of missing values requires special attention ... -
Thermal management of electronic components by using computational fluid dynamic (CFD) software, fluent™ in several material applications (epoxy, composite material & nano-silver)
(Trans Tech Publications, 2013)This paper presents the thermal management of electronic components, microprocessor by using three dimensional numerical analysis of heat and fluid flow in computer. 3D model of microprocessors is built using GAMBIT and ... -
A new invention of thermal pad using sol-gel nano-silver doped silica film in plastic leaded chip carrier (PLCC) application by using computational fluid dynamic sofrware, CFD analysis
(Trans Tech Publications, 2013)Thermal pad is new technology in the world that been used in PLCC in order to reduce junction temperature to the minimum level in electronic components. Thermal Pad was made by using nano-silver as main material. Nano-silver ...