Papers by Taghried Salman
Mağallaẗ baġdād li-l-ʿulūm, Jun 2, 2013
Apparent molar volume,V φ ,and viscosity B-coefficient of nicotinc acid in water and in aqueous N... more Apparent molar volume,V φ ,and viscosity B-coefficient of nicotinc acid in water and in aqueous NaCl solutions have been determined from density and viscosity measurements at (293.15, 298.15, 303.15 and 308.15) K. The experimental density data were evaluated by Masson equation, and the derived, apparent molar volume at infinite dilution, V o φ ,and the slope S v ,were interpreted in term of solute-solvent and solute-solute interactions. Transfer apparent molar volumes at infinite dilution of nicotinic acid from water to NaCl solutions at various temperatures have been calculated.The viscosity data have been analyzed using Jones-Dole equation, and the derived parameters, Jones-Dolecoefficient, B,andFalkenhagencoefficient,A, have been also interpreted in terms of solute-solvent and solute-solute interactions respectively. The variation of B coefficient with temperature, (dB/dT),was also determined, the negative values indicate that nicotinic acid in aqueous NaCl solution is structure making. The results were interpreted in terms of complex vitamin-waterco-solute (NaCl) interactions. The free energy, enthalpy, andentropy of activation were calculated using the Nightingale, Benck, and Eyring equations. Free energies of activation of viscous flow (* 1) per mole, and, (* 2) per mole,of solvent and solute, respectively, were also calculated. The effects of soluteson the structure of water were interpreted in terms of viscositiesand the thermodynamic parameters.
Green synthesis of titanium oxide nanoparticles using pomegranate leaf extract: Characterization and antibacterial activity evaluation
AIP conference proceedings, 2024
International Journal of Low-carbon Technologies, Feb 5, 2020
The corrosion inhibition of Schiff base, namely 2-((2-hydroxy-5-methoxybenzylidene)amino)pyridine... more The corrosion inhibition of Schiff base, namely 2-((2-hydroxy-5-methoxybenzylidene)amino)pyridine (HMAP), for mild steel (MS) in a 1 M hydrochloric acid environment was investigated by means of weight loss and scanning electron microscopy techniques. Quantum chemical calculation based on density functional theory (DFT) was carried out on HMAP. Results illustrated that HMAP is a superior inhibitor for the corrosion of MS in 1.0M hydrochloric acid environment, and inhibition efficiency is higher than 90.0% at 0.5 g/L HMAP. Inhibition performance increases with regard to concentration increase and inhibition performance decreases when raising temperature. Adsorption of the inhibitor on the MS surface followed Langmuir adsorption isotherm and the value of the free energy of adsorption; G ads indicated that the adsorption of HMAP was a physisorption/chemisorption process. The DFT refers to perfect correlation with methodological inhibition performance.
A new kind of ionic liquid was prepared by reacting chloroacetamide (CA) and AlCl3 at the best mo... more A new kind of ionic liquid was prepared by reacting chloroacetamide (CA) and AlCl3 at the best mole ratio (1:2) respectively. The resulting clear brown ionic liquid showed good heat stability at room temperature in a nitrogen gas-filled glove box, having an ionic conductivity of 0.34 mS/cm. FT-IR was used to establish its coordination. Other physical properties, such as viscosity and cyclic voltammetry have been measured.
Zinc oxide nanomaterials as good inhibitors of steel corrosion in chloride solution
PHYSICAL MESOMECHANICS OF CONDENSED MATTER: Physical Principles of Multiscale Structure Formation and the Mechanisms of Nonlinear Behavior: MESO2022
Plant Archives, Jan 15, 2021
The synthesis of zinc oxide nanoparticles from the orange peel is a useful and ecofriendly method... more The synthesis of zinc oxide nanoparticles from the orange peel is a useful and ecofriendly method alternative than using chemical processes, due to the pollution mechanism and the risks that accompany chemical processes. Nanoparticles have been diagnosed by several techniques, including Fourier transform infrared spectroscopy (FTIR) is used for analyzing the functional groups, Atomic Force Microscope (AFM), scanning electron microscopy (SEM) morphological studies and X-Ray Diffraction (XRD) to analyze the structure of crystalline materials And knowledge of its medical applications through its application to serum patients who have high thyroxine.
Using a Streamlined Procedure to Combine AlCl3 and Chloroacetamide to Create a New Ionic Liquid
Al-Nahrain Journal of Science
By reacting AlCl3 with chloroacetamide (CA) at the optimal mole ratio (2:1), a new type of ionic ... more By reacting AlCl3 with chloroacetamide (CA) at the optimal mole ratio (2:1), a new type of ionic liquid was created in addition to the group of ionic liquids (aluminum chloride-amide). With an ionic conductivity of 0.34 mS/cm, the resultant clear brown ionic liquid demonstrated good thermal stability at ambient temperature in a glove box filled with nitrogen gas. Its coordination was established using FT-IR. Measurements have been made of additional physical characteristics including viscosity and cyclic voltammetry.
Corrosion Inhibition Efficiency Investigation of Yttrium Oxide Nanoparticles Coated on Carbon Steel Alloy
Baghdad Science Journal, Apr 20, 2023
INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY
Corrosion processes cause considerable losses in industry and the economy. Corrosion inhibitors h... more Corrosion processes cause considerable losses in industry and the economy. Corrosion inhibitors have been used in both inorganic and organic forms for a long time. Nanomaterials are more effective at preventing corrosion than traditional materials because they have a higher surface-to-volume ratio. Metal oxide nanoparticles (NP) are also novel in a variety of technological applications due to their distinct physical and chemical properties. Due to their higher dielectric constant and thermal stability, yttrium oxide (Y2O3) nanoparticles (NPs) are well known for technical applications. It is frequently utilized in electrochemical applications, photodynamic treatment, and other sectors as a host material for a range of rare-earth alloying elements. As a polarizer, phosphor, biosensor, laser host material, and for bioimaging, Y2O3 NPs has also been employed. Anti-corrosion characteristics of yttrium oxide nanoparticles are appealing regarding the formation of a smooth adsorbed layer on...
PROCEEDING OF THE 1ST INTERNATIONAL CONFERENCE ON ADVANCED RESEARCH IN PURE AND APPLIED SCIENCE (ICARPAS2021): Third Annual Conference of Al-Muthanna University/College of Science
The use of plant extract inhibitors is the best alternative because it does not contain heavy met... more The use of plant extract inhibitors is the best alternative because it does not contain heavy metals and is nontoxic, enviromently friendly, biodegradable, easy to obtain, inexpensive and available in large quantities. In this study, pomelo leaves were extracted in ethanolic media and characterized by using Gas chromatography-Mass spectroscopy GC-MS and Fourier transform infrared Spectroscopy FTIR. Results showed that extract contain large numbers of organic compounds. The ability of pomelo leaves extract (PLE) to act as corrosion inhibitor for carbon steel alloys in an acidic environment was investigated through potentiostatic polarization and scanning electron microscopy (SEM) techniques. Results obtained revealed that PLE can inhibite the corrosion of carbon steel in 0.5 M HCl solution. The corrosion inhibition efficiency of PLE increases with increasing PLE concentration and decreases with increasing temperature.Tafel plots showed that PLE behave as mixed type inhibitor Scanning Electron Microscope (SEM) showed a formation of protective film on the surface of the carbon steel. Adsorption of PLE molecules on the carbon steel surface in the presence of hydrochloric acid obayed Langmuir isotherm.
Oriental Journal of Chemistry, 2017
The present research focuses on the inhibition acting of green corrosion inhibitor of aqueous ext... more The present research focuses on the inhibition acting of green corrosion inhibitor of aqueous extract of pomegranate peel on a-brass alloy corrosion in 2M H 2 SO 4 at temperature range (293-313) K. The pomegranate peel extract was characterized using Fourier infrared Spectroscopy (FTIR), Gas Chromatography Mass Spectroscopy (GC-MS) and Electrochemical polarization. The Tafel Plots revealed that the pomegranate peel extract acts as mixed-type inhibitor in sulfuric acid solution. Inhibition Efficiency (IE%) was increased significantly with increase the inhibitor concentration reaching up to (91.86%) at 500 ppm and decrease with increasing temperature. The corrosion products were investigated using X-ray Diffraction (XRD) analysis which confirmed the aggressivity of sulfate ions and formation of zinc sulfide (ZnS). Scanning Electron Microscope (SEM) examined the a-brass surface corrosion was prevented due to adsorption of inhibitor molecules on its surface. The adsorption of inhibitor molecules on brass obeys langmiur adsorption isotherm.
Rasayan Journal of Chemistry, 2017
The inhibiting effect of L-tryptophan, that considered as an eco-friendly compound on the corrosi... more The inhibiting effect of L-tryptophan, that considered as an eco-friendly compound on the corrosion of carbon steel in saline solution (3.5% NaCl) at pH 11 was investigated potentiostatically at five temperatures in the range 293-313 K. Five concentrations of inhibitor were tested ranging from 5×10-4 to 1×10-2 mole L-1. The addition of Ltryptophan to alkaline sodium chloride solution lowered the corrosion feasibility of the alloy. On the other hand, the corrosion feasibility increased with the rise of temperature. Carbon steel corrosion rate in the saline solution was decreased on increasing L-tryptophan concentration reflecting the inhibiting effect of L-tryptophan when it is present at high concentration in the saline solution. The efficiency of inhibition (%IE) of L-tryptophan increased with increasing the concentration of the inhibitor attaining a maximum value of 71.72 % when the L-tryptophan concentration in the saline solution became 1×10-2 mole L-1 , and decrease with the rise of temperature. Adsorption of L-tryptophan on the surface of carbon steel was considered to obey Langmuir isotherm. Gibbs free energy of adsorption of L-tryptophan on steel was-29.07 kJ mol-1 indicates a physisorption of the inhibitor on the surface of carbon steel alloy. Quantum mechanical study using DFT method with B3LYP/6-31G basis set was applied to achieve good relation between the inhibition efficiency and the chemical structure of L-tryptophan.
Olive leaves have been extracted in aqueous media, the extract was characterized using Furrier tr... more Olive leaves have been extracted in aqueous media, the extract was characterized using Furrier transformed infrared spectroscopy (FTIR) and gas chromatography interfaced with mass spectroscopy (GC-MS). Results showed that extract contain large numbers of organic compounds. The inhibition effect of olives leaves extract (OLE) on the corrosion of -brass in 1M H2SO4 at temperature range from 293 to 313 K was studied using weight loss and Tafel polarization techniques. Inhibition efficiency data were increases with increasing the extract concentration and decreases as the temperature increase. The extract shows the highest inhibition efficiency at 400 ppm, 81.54%. Tafel polarization measurements relive that OLE acts as mixed type inhibitor. The adsorption of studied extract on -brass surface follows the Langmuir adsorption isotherm. In the presence of the extract, scanning electron microscope image shows a smother surface for -brass in the presence of the OLE. The adsorption energies...
Egyptian Journal of Chemistry
Baghdad Science Journal, Jun 2, 2013
Apparent molar volume,V φ ,and viscosity B-coefficient of nicotinc acid in water and in aqueous N... more Apparent molar volume,V φ ,and viscosity B-coefficient of nicotinc acid in water and in aqueous NaCl solutions have been determined from density and viscosity measurements at (293.15, 298.15, 303.15 and 308.15) K. The experimental density data were evaluated by Masson equation, and the derived, apparent molar volume at infinite dilution, V o φ ,and the slope S v ,were interpreted in term of solute-solvent and solute-solute interactions. Transfer apparent molar volumes at infinite dilution of nicotinic acid from water to NaCl solutions at various temperatures have been calculated.The viscosity data have been analyzed using Jones-Dole equation, and the derived parameters, Jones-Dolecoefficient, B,andFalkenhagencoefficient,A, have been also interpreted in terms of solute-solvent and solute-solute interactions respectively. The variation of B coefficient with temperature, (dB/dT),was also determined, the negative values indicate that nicotinic acid in aqueous NaCl solution is structure making. The results were interpreted in terms of complex vitamin-waterco-solute (NaCl) interactions. The free energy, enthalpy, andentropy of activation were calculated using the Nightingale, Benck, and Eyring equations. Free energies of activation of viscous flow (* 1) per mole, and, (* 2) per mole,of solvent and solute, respectively, were also calculated. The effects of soluteson the structure of water were interpreted in terms of viscositiesand the thermodynamic parameters.
Egyptian Journal of Chemistry, 2021
Hypothyroidism is a clinical dysfunction resulting from deficiency of thyroid hormones or, more r... more Hypothyroidism is a clinical dysfunction resulting from deficiency of thyroid hormones or, more rarely, from their impaired and it poses a threat to human health. Nanotechnology is being applied for the inorganic biomedical agents development due to the perfect biological activities of the nanoparticles. Nano inorganic metal oxides control the biological contaminants. The most widely utilized oxide in different fields is magnesium oxide nanoparticles. This work presents an investigation of the main synthesis method, characterization by several techniques, including Fourier transform infrared spectroscopy, Atomic Force Microscope, scanning electron microscopy and X-Ray Diffraction and the effect of magnesium oxide nanoparticles on serum levels of T4 hormone was investigated. Serum levels of T4 in experimental showed a significant decrease at 100 ppm compared to control group. Other concentrations did not change significantly compared to control group. Magnesium oxide nanoparticles (MgONPs) at concentration of 100 ppm reduced the serum T4 level.
Aminoglycosides in the Treatment of Infectious Endocarditis
Schweiz Med Wochenschr Suppl, 1996
The role of aminoglycosides in the treatment of infective endocarditis is well established. The c... more The role of aminoglycosides in the treatment of infective endocarditis is well established. The combination of a beta-lactam with an aminoglycoside shortens the treatment of endocarditis due to penicillin-sensitive streptococci (MIC < or = 0.1 micrograms/mL) when compared to beta-lactams alone. Patients at higher risk (e.g. with prosthetic valves, clinical duration of symptoms > 3 months) should be treated with penicillin for 4 weeks in combination with an aminoglycoside for 2 weeks. Once-daily dosing (ODD) of aminoglycosides can be recommended in penicillin-sensitive streptococcal endocarditis. The treatment of endocarditis due to streptococci relatively and/or highly resistant to penicillin requires combined treatment with penicillin plus an aminoglycoside for a longer duration. At present ODD of aminoglycosides cannot be recommended. Enterococcal endocarditis requires combined treatment for 4 to 6 weeks. Based upon experimental data, ODD of aminoglycosides appears to be markedly inferior to q 8 h dosing. Enterococcal isolates should be screened for high-level resistance to streptomycin and gentamicin. Gentamicin is the preferred agent if susceptibility testing is not performed. Aminoglycosides are administered during the initial 3 to 5 days of treatment for staphylococcal endocarditis on native valves in order to shorten the duration of bacteremia. For staphylococcal prosthetic valve endocarditis, aminoglycosides are administered for the initial 2 weeks of treatment. However, there are no reliable clinical data for methicillin-susceptible isolates to support this recommendation. In prosthetic valve endocarditis due to coagulase-negative staphylococci combination with an aminoglycoside appears to suppress the emergence of rifampin-resistant variants during treatment. There are no data on ODD of aminoglycosides in staphylococcal endocarditis. Right-sided staphylococcal endocarditis due to methicillin-susceptible staphylococci is adequately treated with a two-week course of a beta-lactam plus an aminoglycoside. This short regimen can be recommended for low risk patients, e.g. those without significant heart failure and vegetations < 2 cm3 and with an aminoglycoside-susceptible isolate.
Amino Acids as Corrosion Inhibitors for Carbon Steel in Saline Solution Supervised by
Journal of Physics: Conference Series, 2020
In the present research, electrophoretic deposition technique (EPD) was used to deposit tungsten ... more In the present research, electrophoretic deposition technique (EPD) was used to deposit tungsten oxide (WO3) nanoparticles onto galvanized steel from a tungsten oxide ethanol suspension at various concentrations of (1.7×10−2, 2.5×10−2 and 3.4×10−2 M) for corrosion protection application. The (WO3) nano coating was used as a barrier layer for the corrosion protection of galvanized steel in saline solution. (WO3) nanoparticles were characterized by measuring the Fourier transform infrared spectroscopy, UV-Visible and X-ray diffraction techniques. The morphology of the (WO3) nanoparticles was investigated using Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM). Results indicated that (WO3) nanoparticles layer was efficiently deposited onto galvanized steel using (EPD), also, the deposited nanoparticles film was found to be homogenous and smooth. (EPD) and the partial reduction of the (WO3) nanoparticles occurred simultaneously under the applied electrical fields. Mo...
Effect of Magnesium Oxide and Zinc Oxide Nanoparticles on Triiodothyronine Hormone
IOP Conference Series: Materials Science and Engineering, 2021
The nanoparticles of magnesium oxide and zinc oxide are diagnosed through several techniques, inc... more The nanoparticles of magnesium oxide and zinc oxide are diagnosed through several techniques, including the Atomic Force Microscope (AFM) and (XRD). Analyzing the structure of studied nano materials are useful to investigate their medical applications by applying them to the triiodothyronine hormone in the serum. The concentration effect of zinc and magnesium oxides nanoparticles on triiodothyronine hormone were investigated. Results obtained revealed that zinc oxide nanoparticles gave an inhibitory effect. The highest inhibition to triiodothyronine hormone in the serum was achieved when the ZnONPs concentration is 200 ppm. On the other hand, magnesium oxide nanoparticles have no inhibitory effect on hormone action.
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Papers by Taghried Salman