Department of Chemistry

Modern telecommunication technologies play a decisive role in the methods of organization and structure of the construction of existing and projected mobile IAUs or specialized control systems designed to collect a given set of information about managed objects and, in accordance with the objective function, to manage these objects.

In this article done the review for results of research on algorithms for iterative transformations of noise-immune codes. where the similar decoding procedures provide a significant increase in the efficiency of soft decoders classification of such algorithms is given. The optimality of the algorithm is proved by the criterion of the rate of achievement of the final result when using the step-by-step correction of soft solutions.

Data protection is a complex problem affecting many areas including computers and communications. To ensure the necessary protection of applications, cryptographic methods and various algorithms are used. In this paper general overview of cryptography, information security and the comparison of algorithms with symmetric and asymmetric keys is presented. Factors ensuring the achievement of efficiency, flexibility and security are the basis of this research. As a result, the best solution for symmetric and asymmetric encryption is produced.

A series of new cholesterol derivatives have been prepared via Mitsunobu reaction. The reaction was monitored by thin‐layer chromatography (TLC) technique. All new compounds were characterized by melting points, elemental analysis, FT‐IR, 1 H, 13 C and 2D‐NMR spectroscopy. The antibacterial and antifungal activity of these derivatives was also determined. The phase transitions of the prepared derivatives were measured with the aid of differential scanning calorimetry. The textures of the mesophases have been determined with a hot stage equipped polarizing microscope, also the electrical conductivity of the solutions of these liquid crystals measured by electrical conductivity meter. The analysis showed that these prepared derivatives were liquid crystals.

A new heterocyclic thiazolylazo dye ligand, 2-[2-(4, 5-dimethyl thiazolyl) azo ]-4-Ethoxy Phenol (DMeTAEP), (LH) was synthesized by the diazotization of 4.5-dimethyl thiazolylazonium chloride and coupling with 4-Ethoxy phenol in alkaline alcoholic solution under suitable optimized experimental conditions to yield a new azo dye ligand. The structure of ligand and its complexes was prepared from Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), Ag (I) and Au(III) ions. They confirmed by XRD, SEM, (TG-DTG) thermal analysis, 1 H-NMR,UVevisb, mass and FT-IR spectroscopic methods, elemental analysis, atomic absorption, magnetic susceptibility and molar conductance. The mole ratio [M: L], it was also studied which was 1:1 for Ag (I) and Au (III) complexes and 1:2 The rest of the metal complexes. The isolated solid complexes are found to have the general formula [M (L) 2 ] Cl n .mH 2 O, where n ¼ 1, m ¼ 0 when M ¼ Co (III) and n ¼ 0, m ¼ 1 when M ¼ Ni (II), and Hg(II) while n ¼ 0 and m ¼ 0 when M ¼ Cu (II), Zn (II), Cd (II) and ]ML (H 2 O)] of Ag(I) e complex but Au(III)-complex structural formula was [Au(L)Cl] Cl conductivity measurements for prepared complexes showed 1:1 electrolyte for Co(III(and Au(III) complexes and non e electrolyte the rest of complexes. The spectral and analytical data revealed that this ligand behaves as a tridentate chelating agent and coordination number of all metal ions were found to be six except for Ag (I) and Au (III) which was four. The activities of complexes were examined as sensitizers in the photocatalytic reaction of p-nitro aniline (PNA) which is used as a model of water pollutants.

The research described about the photocatalytic efficiency of zinc oxide on the photolysis of Alizarin Yellow R. Alizarin Yellow R was used as a model of azo dyes which regarded as a main water pollutants. Some variables influencing the process where studied such as: calcination temperature of catalyst, concentration of the dye, weight of catalyst, time of irradiation and doping by transition metal ions. The best degradation percentage obtained was 92.541 % by using zinc oxide prepared at calcination temperature 773 K, weight 0.3 g, dye concentration 40 ppm and through 2 h irradiation time of dye solution in the presence of medium pressure mercury lamp 400 watt. The percentage obtained was 90.850 % by using ZnO-Co, The kinetic studies showed that the reaction from pseudo first order.

The present study enclosed the employment of low cost industrial waste rice husk for the removal of Eriochrome Black T by adsorption technique. The impact of some parameters was studied like agitation time, biosorbent dose and temperature. The bioadsorption information were analyzed by langmuir and Freundlich isotherm models at equilibrium. The adsorption capacities (Qm) obtained from the Langmuir isotherm plots were 40.00, 39.68, 38.91 and 38.00 mg/g respectively at pH adequate to of 7.0 at 30, 40, 50and 60 C°. The study of the temperature diversity incontestible that the EBT adsorption is endothermicand spontaneous with distended irregularity at the solid-solution interface. thermodynamic quantities as change in (ΔH°), change in entropy (ΔS°) and change in free energy (ΔG°) were additionallyinvestigated. Free energy change showed that bioadsorption of Eriochrome Black T was spontaneous in any respect studied temperatures (30–60 C°).It was implicit that rice husk could also be appr...

Tin oxide thin films were deposited on glass substrate at (400 ºC) by using chemical spray pyrolysis technique and its composed with cobalt oxide in different ratio. The structural, morphologic and optical properties of  thin films are investigated by: (XRD) X-Ray Diffraction, (AFM) Atomic Force Microscopy, (UV-Vis )Ultraviolet – Visible Spectroscopy. XRD patterns indicate that the structure of tin oxide thin film is tetragonal. All prepared films were nano materials as stated by Scherrer equation. It might have been found by AFM analysis, those surface roughness increase with increasing of cobalt ratio. By provision about Tauc plots, optical band gaps for thin                               

Abstract A new heterocyclic thiazolylazo dye ligand, 2- [¯2-(4, 5- dimethyl thiazolyl) azo ] -4-Ethoxy Phenol (DMeTAEP), (LH) was synthesized by the diazotization of 4.5-dimethyl thiazolylazonium chloride and coupling with 4- Ethoxy phenol in alkaline alcoholic solution under suitable optimized experimental conditions to yield a new azo dye ligand. The structure of ligand and its complexes was prepared from Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), Ag (I) and Au(III) ions. They confirmed by XRD, SEM, (TG-DTG) thermal analysis, 1 H-NMR,UV–visb, mass and FT-IR spectroscopic methods, elemental analysis, atomic absorption, magnetic susceptibility and molar conductance. The mole ratio [M: L], it was also studied which was 1:1 for Ag (I) and Au (III) complexes and 1:2 The rest of the metal complexes. The isolated solid complexes are found to have the general formula [M (L) 2 ] Cl n .mH 2 O, where n = 1, m = 0 when M = Co (III) and n = 0, m = 1 when M = Ni (II), and Hg(II) while n = 0 and m = 0 when M = Cu (II), Zn (II), Cd (II) and ]ML (H 2 O)] of Ag(I) – complex but Au(III)-complex structural formula was [Au(L)Cl] Cl conductivity measurements for prepared complexes showed 1:1 electrolyte for Co(III(and Au(III) complexes and non – electrolyte the rest of complexes. The spectral and analytical data revealed that this ligand behaves as a tridentate chelating agent and coordination number of all metal ions were found to be six except for Ag (I) and Au (III) which was four. The activities of complexes were examined as sensitizers in the photocatalytic reaction of p -nitro aniline (PNA) which is used as a model of water pollutants.

This study aims at identifying the relationship of sports flannel on skin contact allergy, white blood cells and distance achievement of weight throwing players from the colleges of the University of Al-Qadisiyah. The descriptive approach was used in a correlative style due to its suitability with the nature of the study. The sample of the study consists of 18 players, one player of each college of the University of Al-Qadisiyah. The players are divided into two groups with equal numbers (the first group players wear flannel made of natural fabric while the second group players wear flannel made of nylon). Then, the flannel fabric tested for the stretch and tightening test in a specialized laboratory on the first of March 2018. The researcher requested from the players, in accordance with the consultation of dermatologist to wear the flannel in its both types after the pre-test for both groups for three days. The test includes the blood test, height, weight and distance of throwing. The test lasted till 6/3 and the patch test placed. Posttest took place on 7/3, 9a.m at the University of Al-Qadisiyah, College of Physical Education Stadium. The researcher used statistically questions to deal with the raw data. The study findings showed that there are differences of statistical and health significance of skin allergy, increase of white blood cells and distance achieving for both groups and in favour for the first group except three players from the second group whom do not affected by skin contact allergy. Keywords: Flannel; Contact allergy; White blood cells; Distance achievement.

The study seeks to identify the impact of two programs, a sport program and a dietary one on weight, blood pressure and biochemical parameters of tissue oxygen. The study includes a sample of 36 of aged men. The sample is divided into three equal groups. The groups were subject to pretest measures at 9 a.m. on 29th Oct. 2016 that included height, weight, blood pressure and biochemical parameters of tissue oxygen. The first group used a sport program of 5 units per week in which the time of each unit was 45 minutes. The second group used diet program of three meals daily, 7 days in a week. The third group was the control one. The two programs continued for (9) weeks starting from 1st Nov. 2016. The posttests were conducted at 9 a.m. on 5th Jan 2017. The raw data has been treated statistically. The results showed that there are significant differences in the study variables in favor of the two experimental groups in comparison to the control one. However, there is no statistical significance between the first and the second groups due to numerical approximation.

The study aims to identify the impact of climate on weight and other physiological variables through using recreational sport for aged people. The sample includes (24) persons. It is divided into three equal groups, where experimental approach has been applied. The approach takes the form of recreational sport programme that is  applied on  the two groups only  (the first  is  in Summer  for  2 months and the second in Winter for 2 months). The duration of the two progammes is (4) months in which the control group has undergone tests, measurement and blood tests (pretests and post tests for the three groups). The researchers deal with the raw data statistically. The results show that there are significant and health differences for the study variables in favour for the two experimental groups in comparison for the control group. Due to the approximate results of the two groups, they do not show significant differences between them.