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Now showing items 11-20 of 150
Electronic structure, chemical bonding features, and electron charge density of the double-cubane single crystal [Sb7S8 Br 2] (AlCl4)3
(American Institute of Physics, 2011-05-16)
The present calculations were performed using all-electron full potential linearized augmented plane wave method based on the density functional theory. We have optimized the structure of the double-cubane single crystal ...
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 ...
Nano geopolymer for sustainable concrete using fly ash synthesized by high energy ball milling
(Trans Tech Publications, 2013)
This paper presents the development of a nano geopolymer for sustainable concrete using fly ash synthesized by high-energy ball milling. In this paper, we report on our investigation of the effects of grinding on the binder ...
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 ...
Sulfuric acid attack on ordinary Portland cement and geopolymer material
(Institute for Scientific Information (ISI), 2013-09)
The resistance of ordinary Portland cement binder towards acid had been widely discussed by researchers. The deterioration effect of this binder may cost high repair expense and rehabilitation. Geopolymer material is a new ...
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 ...
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 ...
A rapid technique to determine purity of edible bird nest
(AENSI Publisher All rights reserved, 2013-10)
Edible bird nest (EBN) is a gelatinous substance produced by different species of swiflets during the breeding season. It is widely consumed as a health food product for its high beneficial effects to human being. In recent ...
Selective extraction, separation and recovery of Cu(II) in presence of Zn(II) and Ni(II) from leach liquor of waste printed circuit board using microcapsules coated with Cyanex 272
(Springer Verlag, 2012-05)
The study was conducted to optimize the selective extraction and recovery of Cu(II) in the presence of Zn(II) and Ni(II) from the leach liquor of waste printed circuit boards (PCBs). The extraction experiments were carried ...
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 ...