Browsing Researchers by Title
Now showing items 2859-2878 of 3514
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Robust interface on ENR-50/TiO2 nanohybrid material based sol-gel technique: Insights into synthesis, characterization and applications in optical
(Elsevier, 2020-06)In this work, the sol–gel technique was used to prepare a new organic–inorganic hybrid from Epoxidized Natural Rubber (ENR-50) and Titanium dioxide (TiO2) by blending different content of titania precursors (10, 30, and ... -
The role of accountability towards FDI attractiveness evidence from Malaysia
(Hampstead Psychological Associates, 2020-04)The ability of any country to attract FDI inflows is considered to depend on the quality of the economic accountability found within that country. Accountability reflects perceptions of the extent to which a country's ... -
Role of clay (Bentonite) on mold making process in foundry metallurgy
(Universiti Kebangsaan Malaysia (UKM), 2008-12-03)The foundry engineer is usually familiar with the fact that there are different types of clay,such as kaolinite and montmorillonite (bentonite). The bonding action of kaolinite in moulding sands results from the free ionic ... -
The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
(Trans Tech Publications, 2013-03)The effect of retrogression and reaging heat treatment on microstructure evolution andmechanical properties of 7075 Al alloy in direct chilling casting process was investigated. The subsequent heat treatment process comprised ... -
The role of low coverage sodium surface species on electrochemical promotion in a Pt/YSZ system
(Elsevier B.V., 2012-10-04)The effect of sodium-modification on the catalyst and electrocatalytic properties of a platinum catalyst supported on a YSZ solid electrolyte was studied. Increasing the sodium coverage on the catalyst surface appears to ... -
Role of micro and nanostructures in enhancing near IR optical absorption in Silicon
(Institute of Electrical and Electronics Engineers Inc., 2014-10-15)Role of micro and nanostructures in enhancing IR transmission in Si wafers has been investigated. Based on feature dimensions, incident light interaction can be described in terms of: (a) geometrical optics for wavelengths ... -
The role of sodium surface species on electrochemical promotion of catalysis in a Pt/YSZ system: The case of ethylene oxidation
(Elsevier Inc., 2013-07)The role of sodium addition as foreign (impurity) species on the electrochemical promotion of ethylene oxidation in a Pt/YSZ system was investigated. It was found that the presence of sodium surface species on the catalyst ... -
The role of sodium surface species on oxygen charge transfer in the Pt/YSZ system
(Elsevier Limited, 2012-08-01)The role of sodium surface species in the modification of a platinum (Pt) catalyst film supported on 8 mol% yttria-stabilised-zirconia (YSZ) was investigated under a flow of 20 kPa oxygen at 400°C. Cyclic and linear sweep ... -
The role of the activator rich-W interboundary layer on liquid phase sintering of W-pre-alloy bronze composites of Fe and Co additions
(Elsevier B.V., 2012-11)In this study, the effects of 1-3 wt.% Fe and Co additions on the sintering of W 40-80wt.%-pre-alloy bronze Sn 10 wt.%-Cu compacts were examined. The isothermal part of the sintering process was conducted at temperatures ... -
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 ... -
Room temperature anodization of aluminum and the effect of the electrochemical cell in the formation of porous alumina films from acid and alkaline electrolytes
(VBRI Press, 2012)Nanoporous alumina was produced by anodic oxidation of aluminum in both acidic and alkaline electrolytes. Previous reports indicate that nanoporous aluminais mainly produced from strongly acidic electrolytes, and with the ... -
Root causes analysis of disbonds and unidentifiable ultrasonic indications on composite materials
(Trans Tech Publications, 2014)To ensure the structural integrity of composite materials, honeycomb sandwich panels must be inspected for defects with through-transmission ultrasonic testing. This study focused on the root causes analysis of disbonds ... -
ROVI: a robot for visually impaired for collision- free navigation
(Universiti Malaysia Perlis, 2009-10-11)ROVI is a device used to guide visually impaired people to dwell around. The conventional method is the white cane which will be used to sense the surface and of the obstacle around the blind. In this project, the white ... -
Row division method to generate QC-LDPC codes
(Institute of Electrical and Elctronics Engineering (IEEE), 2009-05-24)To cut down the hardware implementation cost this paper presents an efficient method to construct large girth Quasi-Cyclic low density parity check (QCLDPC) codes. The row groups are paired two times the row weight, which ... -
Rubber tire dust-rice husk pyramidal microwave absorber
(EMW Publishing, 2011)Rubber tire dust-rice husk is an innovation in improving the design of pyramidal microwave absorbers to be used in radio frequency (RF) anechoic chambers. An RF anechoic chamber is a shielded room covered with absorbers ... -
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Sand replacement materials (SRM) in sustainable cement composites; A concise review
(Trans Tech Publications, 2013)This paper presents a short review of research works on the development of sustainable cementitious matrix composites with addition of potential mineral wastes as sand replacement materials. The study emphasizes on the ... -
SCPS solution for heterogeneous networks for isolated areas: a novel design approach
(ICIC International, 2012)This research presents an innovative system that has capability to prove the technical feasibility and advantages of a joint radio frequency (RF) and free space optic (FSO) system with a synchronized self-trace directional ... -
Screening drug, alcohol and substance abuse the Psychometric measures
(EDP Sciences, 2018)Urinalysis was used in previous studies among higher institution students (n=16252) in Malaysia to answer the question of whether university students are involved in drug abuse. However, the use of urinalysis had faced ...