Kamarudin Hussin, Brig. Jen. Datuk Prof. Dr.: Recent submissions
Now showing items 121-140 of 250
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Mechanical properties and wear behavior of brake pads produced from palm slag
(Trans Tech Publications, 2012)Brake pads are important safety devices in vehicles. An effort to avoid the use of asbestos in brake pads has led to the development of asbestos-free brake pads that incorporate various organic and inorganic fillers. Palm ... -
Amino acid 2-aminopropanoic CH 3CH(NH 2)COOH crystals: Materials for photo- and acoustoinduced optoelectronic applications
(Springer Science+Business Media, LLC, 2012-10)Photo-induced treatment of L-alanine single crystals grown by slow evaporation method at an ambient temperature was performed using a 25 ps Nd:YAG pulsed laser in the presence of an external acoustic filed. The changes of ... -
X-ray photoelectron spectrum, X-ray diffraction data, and electronic structure of chalcogenide quaternary sulfide Ag2In 2GeS6: Experiment and theory
(Springer Science+Business Media, LLC, 2013-02)We report measurements of the X-ray diffraction and X-ray photoelectron spectrum on single crystals of Ag2In2GeS6. We also present first principles calculations of the band structure and density of states using the ... -
Crystallochemical affinity and optical functions of ZrGa2 and ZrGa3 compounds
(Elsevier B.V., 2012-01)The influence of crystallochemical affinity for crystals ZrGa2 and ZrGa3 on the optical properties was studied. We have calculated dispersion of optical constants ε2average(ω). We have established that application of ... -
Bismuth in gallium arsenide: Structural and electronic properties of GaAs 1-xBi x alloys
(Elsevier Inc., 2012-02)The structural and electronic properties of cubic GaAs 1-xBi x alloys with bismuth concentration 0.0, 0.25, 0.50, 0.75 and 1.0 are studied using the 'special quasi-random structures' (SQS) approach of Zunger along with the ... -
Dispersion of the linear and nonlinear optical susceptibilities of disilver germanium sulfide from DFT calculations
(Springer Science+Business Media New York., 2013-03)The dispersion of the linear and nonlinear optical susceptibilities is calculated for disilver germanium sulfide (Ag2GeS3) using the all-electron full potential linearized augmented plane wave (FP-LAPW) method. Calculations ... -
Acentric nonlinear optical 2,4-dihydroxyl hydrazone isomorphic crystals with large linear, nonlinear optical susceptibilities and hyperpolarizability
(American Chemical Society, 2012-04)A systematic ab initio study of the linear, nonlinear optical susceptibilities, and hyperpolarizability of noncentrosymmetric-monoclinic 2,4-dihydroxyl hydrazone isomorphic crystals (DHNPH) within density functional theory ... -
Structural, electronic properties and charge density distribution of the LiNaB 4O 7: Theory and experiment
(Elsevier B.V., 2012-11)The title compound was synthesized by employing high-temperature solution reaction methods at 840 °C. Single-crystal XRD analysis showed that it crystallizes in the orthorhombic noncentrosymmetric space group Fdd2, with ... -
Single-crystal oxoborate (Pb 3O) 2(BO 3) 2WO 4: Growth and characterization
(Elsevier Ltd, 2012-09)An oxoborate, (Pb 3O) 2(BO 3) 2WO 4, has been prepared by solid-state reaction methods below 620°C. Single-crystal XRD analysis shows that it crystallizes in the orthorhombic group Cmcm with a = 18.480(4) , b = 6.3567(13) ... -
Linear optical susceptibilities of the oxoborate (Pb 3O) 2(BO 3) 2WO 4: Theory and experiment
(Springer Science+Business Media, 2012-08)The optical susceptibilities have been investigated experimentally and theoretically for a newly synthesized oxoborate, (Pb 3O) 2(BO 3) 2WO 4. The crystal structure is composed of one-dimensional 1 ∞ [Pb 3O] 4+ chains ... -
Linear and nonlinear optical susceptibilities and hyperpolarizability of borate LiNaB 4O 7 single crystals: Theory and experiment
(American Institute of Physics., 2012-09)LiNaB 4O 7 was synthesized by employing high-temperature reaction methods. The purity of the sample was checked by x-ray powder diffraction. The optical properties were measured by analyzing the diffuse reflectance data ... -
Absorption and photoconductivity spectra of Ag 2GeS 3 crystal: Experiment and theory
(Elsevier B.V., 2012-07)Spectral features of polycrystalline Ag 2GeS 3 samples synthesized from high-purity elements (at least 99.99 wt.% purity) in quartz ampoules evacuated to 0.1 Pa were explored. The band energy gap of Ag 2GeS 3 crystals ... -
Electronic structure and magneto-optic Kerr effect in ferromagnetic titanium oxyphosphates Li 0.50Co 0.25TiO(PO4): An ab-initio study
(Elsevier Ltd., 2012-06)The X-ray diffraction for Li 0.50Co 0.25TiO(PO 4), was used as a starting point to perform structural optimization by minimizing the forces acting on the atoms. We have performed a comprehensive theoretical study of ... -
The processing, characterization, and properties of fly ash based geopolymer concrete
(Advanced Study Center Co. Ltd, 2012)In recent years, attempts to increase the utilization of fly ash as a replacement for ordinary Portland cement (OPC) in concrete have increased in significance. Geopolymer concrete does not need the presence of Portland ... -
Characterization of LUSI mud volcano as geopolymer raw material: A review
(Universiti Malaysia Perlis (UniMAP), 2012-06-18)This paper summarizes the current knowledge about the potential of LUSI mud volcano, East Java, Indonesia as a raw material in geopolymer. Previous experimental study shows that the LUSI mud has a good performance when 5% ... -
Review on the utilization of palm ash for geopolymer composite
(Universiti Malaysia Perlis (UniMAP), 2012-06-18)The waste materials from agro industry can be use as pozzolanic material in concrete production. One of the agro waste materials that have possibility is palm ash because it has been used up to 60% for cement replacement. ... -
The effect of damp sand content on the geopolymerization reaction of fly ash-based geopolymer mortars
(Universiti Malaysia Perlis (UniMAP), 2012-06-18)The results of the current experimental investigation indicates the significant effect of the natural sand content prepared in damp condition on the compressive strength of fly ash-based geopolymer mortars prepared at ... -
Peranan institusi pengajian tinggi dalam memartabatkan dan memperkasakan Institusi Raja di Malaysia
(Universiti Malaysia Perlis (UniMAP)Pusat Kajian Institusi Raja Malaysia, 2013-06-05) -
Fly ash geopolymer bricks- a review
(Universiti Malaysia Perlis (UniMAP), 2012-06-18)Fly Ash geopolymer bricks is one of the alkali activated material. Bricks are the only man-made building materials that testify to their use since the early human civilization. Since fly ash is being accumulated as waste ... -
FTIR and XRD characterization of kaolin geopolymer based on solids-to-liquid and alkaline activator ratios
(Universiti Malaysia Perlis (UniMAP), 2012-06-18)This paper covers the results of X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) in assessing the phase identification and functional group of kaolin geopolymer based on the different ...