New Schiff-base ligand and metal complexes with Cr (Ш), Mn (II), Fe (II), Co (II), Ni (II) and Cu (II) ions are reported. Ligand was prepared in two-step reaction. The reaction of 2-hydroxy-5-methylisophthalaldehyde with 3-Amino-1-propanol resulted in the isolation of precursor (3, 3'-((1E, 1'E)-(propane-1, 3-diylbis (azanylylidene)) bis (methanylylidene)) bis (2-hydroxy-5-methylbenzaldehyde)). The reaction of precursor with 4-Aminoantipyrine gave the required ligand;(4, 4'-(((1E, 1'E)-(((1E, 1'E)(propane-1, 3-diylbis (azanylylidene)) bis (methanyl ylidene)) bis (2-hydroxy-5-methyl-3, 1-phenylene)) bis (methanylylidene)) bis (azanyl ylid ene)) bis (1, 5-dimethyl-2-phenyl-1, 2-dihydro-3H-pyrazol-3-one)) H 2 L. The reaction of this ligand with the appropriate metal ions gave metal complexes of the formulae [M 2 (L)(H 2 O) 2 Cl 2]. Cl 2, M= Cr (Ш),[M 2 (L) Cl 2 (H 2 O) 2], M= Mn (II), Fe (II),[M 2 (L)] Cl 2. H 2 O, M= Co (II), Ni (II),[M 2 (L) Cl 2] H 2 O, M= Cu (II). A range of techniques were used to confirm the entity of ligand and their complexes. The formation of ligand and mode of complexation and geometrical structure of complexes were verified using FTIR, electronic spectra, NMR, ESMS, magnetic susceptibility, micro-elemental analysis, metal content, chloride content and conductance. The analytical and spectroscopic data indicated the formation of four and six-coordinate for complexes. Biological evaluation of ligand and complexes against gram-positive bacteria (G+), Bacillus stubtili, Staphylococcus aureus, and gram-negative bacteria (G−), Escherichia coli and Pseudomonas aeruginosa and compared with antibiotic drug (Cefotaxime) and two types of
Every year, millions of tons of waste glass are created across the globe. It is disposed of in landfills, which is unsustainable since it does not disintegrate into the environment. This study aims to produce reactive powder concrete by using recycled glass powder and determine the influence on the mechanical properties. This study investigated the effect of partial replacement of cement with recycled glass powder at two percentages (0, 20) % by weight of cement on some mechanical properties (Fresh density, Splitting tensile strength, Impact Strength, and voids%) of reactive powder concrete containing 1 % micro steel (MSRPC). Furthermore, using steam curing for (5 hours) at 90 degrees celsius after hardening the sample directly, RPC was
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Sulphated zirconia (SZ) is one of the most important solid acid catalysts was synthesize at different operating conditions, different calcination temperature and sulfonating time has been used. The prepared catalyst was distinguished by X-ray Diffraction (XRD), particle size and morphology of catalyst were checked by atomic force microscopy (AFM) and scanning electron microscopy (SEM) respectively, in addition to analysis by (DTA) Differential thermally and Energy Dispersive X-Ray (EDX). Finally, the N2 adsorption-desorption was used to measure the surface area (BET) and pore volume. High degree of tetragonal crystallinity was obtained 90 %, and surface area of 169 m2/g and pore volume of 0.39 cm3g-1 at 600°C calcination temperature for 3
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Titanium alloy surface properties have an essential role in the interaction of dental implants with bone, and alteration of the surface of the implant could improve osseointegration. This study was designed to investigate the effect of different heat treatment temperatures on titanium alloy surface properties for dental implants. The effect of different temperatures of heat treatment (750°C, 850°C, 950°C and 1050°C) were investigated on the surface topography, surface chemistry, titanium oxide layer thickness, blood contact angle, & blood drop diameter of titanium alloy. The disks were prepared from titanium alloy (Ti-6Al-4V) and the samples were divided into five groups depending on the different temperatures of heat treatment. The hea
... Show MoreThe deposition process and investigation of the physical properties of tungsten trioxide (WO3) thin films before and after gamma irradiation are presented in this paper. The WO3 thin films were deposited, using the pulse laser deposition technique, on glass substrates at laser energies of 600mJ and 800mJ. After deposition, the samples were gamma irradiated with Co60. The structural and optical properties of polycrystalline WO3 thin films are presented and discussed before and after 5kGy gamma irradiation at the two laser energies. X-ray diffraction spectra revealed that all the films consisted of WO3 crystallized in the triclinic form; the dislocation density and lattice strain increased with the absorbed dosage of gamma
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In this paper the definition of fuzzy anti-normed linear spaces and its basic properties are used to prove some properties of a finite dimensional fuzzy anti-normed linear space.
Thin films of In2O3-CdO at various CdO contents (0.01, 0.02, 0.03, 0.04 and 0.05) were deposited on transparent substrate which is glass using chemical spray pyrolysis deposition method at substrate temperature 150oC. The structural properties was studied to characterize the prepared materials by XRD analysis. Surface morphology has been illustrated using scanning electron microscopy which proved the nanosize of prepared materials. This materials have been used as gas sensor for toxic gas which is hydrogen sulfide H2S. The sensitivity and response speed have been investigated with addition of CdO nanoparticles. © 2021, S.C. Virtual Company of Phisics S.R.L. All rights reserved.
Ground state energies and other properties of 2S shell for some atoms as Be(Z=4), B(Z=5), C(Z=6) and N(Z=7) were calculated by using Hartree-Fock wave function. We found the values of potential energies in hartree unit (3.8369, 6.78565, 10.18852 and 14.41089) respectively and the other proprieties like expectation values of the position < r1m > were in agreement with the published results. All the studied atomic properties were normalized.
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