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Now showing items 17711-17720 of 17723
Effect of gamma irradiation on the microstructure and morphology of polyethylene oxide and polyvinyl alcohol blends
(
Trans Tech Publications
, 2010 , Conference Paper)
Thin films of a blend of 90, 75, 50 (wt/wt%) percentage of polyethylene oxide and polyvinyl alcohol were synthesized and irradiated with 5, 25, 50, 100 and 200 kGy. The presence of PVA leads to diffusion controlled mechanism ...
Membrane solubilization in erythrocytes as a measure of radiation exposure to fast neutrons
(
IOP Publishing
, 1999 , Article)
Membrane solubilization and osmotic fragility of rat erythrocytes irradiated in vivo with fast neutron fluences ranging from 106 to 5 x 107 n cm-2 using a 252Cf source were measured instantaneously using a light scattering ...
Spectroscopy characterizations of nanoscale polymer-based coatings
(
Elsevier
, 2023 , Book chapter)
Nanoscale polymer-based coatings have become center of importance in present day's materials research. Because of their unique properties, such as less weight, ductility, and ease of manufacture, polymer-based films are ...
Pottery from Halat Aobeer and Hazem Al-Jasrah, Qatar
(
Elsevier
, 2013 , Article)
In this paper the results of investigations on six archaeological ceramic sherds of the most common Islamic earthenware from the site of Halat Aobeer and Hazam Al-Jasrah are presented. The data was obtained by using a ...
Mechanical and corrosion characteristics of TiC reinforced Ni-P based nanocomposite coatings
(
Elsevier
, 2023 , Article)
The requirement for effective corrosion protection and better mechanical properties in various industries employing metal components has led to the growth of nickel (Ni)-based metallic coatings. The electroless-synthesized ...
Influence of polyolefin modified by Y2O3 as protective coatings against carbon steel corrosion into 3.5% NaCl media
(
Springer
, 2023 , Article)
In this research work, we have studied the impact of Yttrium nanoparticles loaded with corrosion inhibitors dodecylamine (DOC) incorporated in polyolefin for the corrosion protection of steel. The surface analysis of pure ...
Determination of midodrine hydrochloride via Hantzsch condensation reaction: A factorial design based spectrophotometric approach
(
Royal Society of Chemistry
, 2015 , Article)
A set of experimental designs was executed to attain the optimal reaction parameters of chemical derivatization of midodrine hydrochloride (MD·HCl) in oral formulas via a Hantzsch condensation reaction. The process variables, ...
n-InAs based photo-thermo-electrochemical cells for conversion of solar to electrical energy
(
Elsevier
, 2016 , Article)
This paper presents the photo-thermo-electrochemical (PEC) response of various combinations of the n-type indium arsenide (n-InAs) photo-electrode with different counter electrodes, i.e., Ag, Al, Cu, Pb, Zn and ITO. The ...
A Meta-Analysis to Gauge the Effectiveness of STEM Informal Project-Based Learning: Investigating the Potential Moderator Variables
(
Springer Science and Business Media B.V.
, 2023 , Article Review)
In recent decades, informal project-based learning (PjBL) for science, technology, engineering, and mathematics (STEM) education has gained immense significance. Though some meta-analytical studies have reported the ...
Investigating the individual interests of undergraduate students in STEM disciplines
(
Frontiers Media SA
, 2024 , Article)
Despite massive investments in the education sector to empower youth in Qatar, a vital concern remains to retain students in science, technology, engineering, and mathematics (STEM) disciplines at the undergraduate level. ...