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Baghdad, Iraq

The University of Technology, Iraq is one of Iraq's largest universities. It is situated in the city of Baghdad, Iraq. The university is specialized in Engineering, Computer science, and Applied science and Technologies. It was founded in 1964. Wikipedia.


Al-Amiery A.A.,University of Technology, Iraq
Research on Chemical Intermediates | Year: 2012

In Iraq, like most developing countries, attempts are being made to synthesize new compounds with several pharmacological properties. (£)-2-(3-(2-imino-1-methylimidazolidin-4-ylidene)-1-methylguanidino) acetic acid (L) has been synthesized and used as a ligand for the formation of Cr(III), Co(II), Ni(II), and Cu(II) complexes. The chemical structures of synthesized compounds were characterized using different spectroscopic methods. All chelates except Ni(II) chelate are found to be octahedral structures, Ni(II) chelate was square planar. The stability for the prepared complexes was studied theoretically using density function theory. The total energy for the complexes was calculated and it was shown that the copper complex is the most stable one. Ligand and complexes were tested against selected types of microbial organisms and showed significant activities. The free-radical scavenging activity of ligand and metal complexes have been determined by their interaction with the stable free-radical DPPH and all the compounds have shown encouraging antioxidant activities. © Springer Science+Business Media B.V. 2011. Source


(E)-3-((5-phenyl-1,3,4-oxadiazol-2-ylimino)methyl) naphthalen-2-ol (LH) has been synthesized and used as a ligand for the formation of V(IV), Cr(III), Mn(II), Co(II), Ni(II), and Cu(II) complexes. The chemical structures were characterized using different spectroscopic methods. The elemental analyses revealed that the complexes have the general formula [ML 2(H 2O) 2] [where M = Mn(II), Co(II), and Cu(II)], while the Cr(III) complex has the formula [CrL 2(H 2O) 2]Cl, V(IV) complex has the formula [VO 2L 2], and Ni(II) complex has the formula [NiL 2]. The molar conductance data revealed that all the metal chelates except the Cr(III) are non-electrolytes. From the magnetic susceptibility measurement and UV-Visible spectra, it is found that the structures of Cr(III), Mn(II), Co(II), and Cu(II) complexes are octahedral, V(IV), complex is square pyramid and Ni(II) complex is square planar. The stability of the prepared complexes was studied theoretically using density function theory. The total energy for the complexes was calculated and it was shown that the copper complex is the most stable. Complexes were tested against selected types of microbial organisms and showed significant activities. The free radical scavenging activity of metal complexes have been determined by their interaction with the stable DPPH-free radicals. All the compounds have shown encouraging antioxidant activities. © Springer Science+Business Media, LLC 2011. Source


Alsalhy Q.F.,University of Technology, Iraq
Desalination | Year: 2012

Polymeric blend ultrafiltration membranes based on poly(vinyl chloride) (PVC) and polystyrene (PSR) were prepared by phase inversion method. The PSR concentration in dope solution varied from 1 to 6 wt.%. DMAC was used as a solvent, while water was used as internal and external coagulant. Scanning electron microscope (SEM) was utilized to characterize cross-section, outer, and inner surfaces of the hollow fiber structure. Differential scanning calorimetry (DSC) was used for the determination of the glass transition temperature (Tg) of the blends. From the experimental results it was found that, the structural morphology of the polymeric blend varied with the PSR concentration. There is no significant decrease in pure water permeation flux by using 1 and 2 wt.% PSR concentration in dope solution. The PVP K-90 rejection highly improved from 76.2% to 98.53% with the addition of 1 wt.% PSR concentration. The PVC/PSR blends show incompatibility by the results of SEM and DSC. Also it was found that the mechanical properties of PVC/PSR blend membranes were improved randomly compared with that of PVC membrane. © 2012 Elsevier B.V. Source


Farhod Chasib K.,University of Technology, Iraq
Journal of Chemical and Engineering Data | Year: 2013

The efficiency of five new solvents as a selective solvent in the extraction of phenol and p-chlorophenol from wastewater was investigated. The phenols samples were collected from real petroleum refinery wastewater and from an experimentaly prepared aqueous phenol solution. In this work, data have been estimated for 10 systems containing, phenol + water or p-chlorophenol + water as a common component liquid and + five solvents [ethylene glycol, diethylene glycol, poly(ethylene glycol) (200), dimethylsulfoxide and tetramethylene sulfolone (sulfolane)]. The consistency and accuracy of the tie-line data were evaluated using three correlation relations namely, Bachman, Hand, and Othmer, and Tobias correlation. The Plait Point for each ternary system was estimated. Among the five solvents used to extract the phenol or p-chlorophenol from wastewater, diethylene glycol (DEG) has the highest selectivity and distribution coefficient and the greatest differences between its boiling point and density and those of phenol or p-chlorophenol. It can therefore, be regarded as an excellent solvent for extracting phenol or p-chlorophenol from wastewater. The liquid-liquid equilibrium data have been predicated using the nonrandom-two-liquid (NRTL) model and universal-quasi-chemical (UNIQUAC) model. The binary interaction parameters have been calculated using the Maximum Likelihood Principle technique. The experimental data fitted by the NRTL model are more accurate than the UNIQUAC model. © 2013 American Chemical Society. Source


Mohammed Jasim K.,University of Technology, Iraq
Optics and Lasers in Engineering | Year: 2011

The present paper reports an experimental investigation based on X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), and wavelength dispersive spectroscopy (WDS) analyses of phases formed after laser sealing of plasma sprayed coatings of 8.5 wt% yttria partially stabilized zirconia (YPSZ). X-ray diffraction and X-ray step-scanning analyses showed that the plasma sprayed and sealed coatings consisted mainly of t′ phase with a very small amount of monoclinic phase (m phase) in the plasma sprayed coatings. It was also found that the small amounts of m and cubic phases (c phase) present in the sealed coatings were dependent on laser processing specific energies (specific energy is equal to laser power/traverse speed x beam diameter). It was also found that rhombohedral (r) phase formed after laser sealing of coatings at higher specific energies. A direct relationship between c/a ratio of transformable tetragonal phase (t phase) produced by thermal treatment of sealed coatings and nontransformable tetragonal phase (t′ phase) and the amount of Yttria was obtained. A new equation was derived, which describes the relationship between Yttria concentration and the c/a ratio of tetragonal phases (t or t′). © 2011 Elsevier Ltd. All rights reserved. Source

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