Al-Nahrain Journal of Science

A charge transfer complex formed by interaction between the p-aminodiphenylamine (PADPA) as electron donor with iodine as electron acceptor in ethanol at 250C as evidenced by color change and absorption.The spectrum obtained from complex PADPA –Iodine shows absorptions bands at 586 nm. All the variables which affected on the stability of complex were studies such as temperature, pH, time and concentration of acceptor. The linearity of the method was observed within a concentration rang (10–165) mg.L-1and with a correlation coefficient (0.9996), while the molar absorbitivity and sandell sensitivity were (4643.32) L.mol-1.cm-1and (0.0943) μg.cm-2, respectively. The adsorption of complex PADPA–I2was studied using adsorbent surfaces arundo plant. The dynamics of isotherm were studied according to experimental conditions of contact time, adsorbent weight, pH and particle size. The results showed the adsorption isotherm according to the Gils classification indicated L1, when the temperature (10,25)0C of plant, but S2at (37.5,50)0C for plant. Analytical techniques including UV-Vis. & FTIR were applied to characterize arundo. The values of Gibbs free energy, enthalpy ,entropy calculated from the thermodynamics of the process

Epilepsy is a worldwide disease characterized by huge changes in several biochemical parameters due to seizure the main symptoms of the disease. The aim of this study was to assess some biochemical parameters in epileptic patient. This study involves 31 patients with 31 healthy as a control group for each one of both groups, the following parameters were assessed: {8-hydroxydeoxy guanosine(8-OHdG), Malondialdehyde (MDA), Prolactin, Lactate dehydrogenase (LDH), Albumin, Total bilirubin (TSB), Alkaline phosphatase (ALP), Aspartate aminotransferase (AST), Alanine-aminotransferase (ALT) and Creatine phospho kinase (CPK)} in serum of them.8-OHdG concentration was increase significant (P>0.05) in epileptic patients in compare to control group while MDA was nonsignificant, the seizure was characterized by increasing of oxidative stress situation according to its naturalistic effect mainly on nucleic acid (generate 8-OHdG) in cells more than lipid (generate MDA), due to generating oxidants inside the cell.TSB was significantly decreased(P>0.05) may be due to its function as endogenous antioxidant. Albumin did not show any significant difference. CPK has significant increasing (P>0.05) which be due to its seizure nature that need high energy production which stimulate the reactions of energy production which lead to upregulate that enzyme. LDH failed to show any significant difference may be due to fast remediation

In this work the pyridinium salts were prepared by two stage. The first step was preparation of Schiff bases compounds (A1-A5), The second step is preparation of pyridinium salts (B1-B5) by N-alkylationreaction between Schiff bases compounds and a proper alkyl halide(1,2-Chloroethane, 1-bromopropane, benzyl chloride, benzyl chloride and bromoethane).All the compounds were confirmed their structures by using spectroscopic techniques (FTIR and 1HNMR)

DeterminationofantioxidantsandantibacterialactivitiesofanimportantmedicinalplantlikePlatytaeniamulticaulehasbeenaccomplishedforthefirsttimeinthiscontest.Regardingantioxidantsandantibacterialactivities,theplantwasanalyzedchemicallybymeansoffourwellknownmethodsaswellasbyUV/VISspectroscopictechniques.Thecrudeextractwasobtainedfromtheplantbytheutilizationofmethanol(MeOH)andtheantioxidantsactivitiesofthecrudeextracttested.Furthermore,usingspectrophotometertheantioxidantscapacitieswereexaminedvia2,2-Diphenyl-1-Picrylhydrazyl(DPPH)Assay,TotalAntioxidantCapacity(TAC),FerricReducingAntioxidantPower(FRAP)AssayandReducingPower(RP)Assays.ThecapacityofDPPHAssayofP.multicaulewas190mg/gofascorbicacidconcentration.Additionally,fortheTACandFRAPthevaluesofextractswere10.85mgand40mgofascorbicacid/gofP.multicauleextractrespectively.Inaddition,theRPshows3.29mg/gofascorbicacidconcentration.TheP.multicaulehaveshownthehighantioxidantactivity.Ontheotherhand,theantibacterialactivityofthisplantwasinvestigatedbytheagarwelldiffusionmethod.Inthis,theplantextractswereexaminedagainsttwobacterianamelyEscherichiacoliandStaphylococcusaureuswhichexhibited14mmand16mmzonesofinhibitionrespectively.Hence,thistestprovedthattheP.multicaulecontainshighantibacterialagents

Ni (II) with 4-amino-5-(pyridyl)-4H-1,2,4-triazole-3-thiolcomplex was synthesized and used as a photostabilizer for polystyrene (PS) films. Polystyrene has been dissolved with Ni (II) complex in chloroform solvent to form PS films in different thickness(40, 50, 60, 70, and 80 μm), which containing 0.5 w\v% concentration, and casting method was used to remove chloroform. The photo stabilization activity of these compounds was determined by monitoring the carbonyl index, weight loss method with irradiation time and morphology study. There are several mechanisms were predict according to the results acquired, depending on the structure of the complex: a) UV. absorber or screening, b) peroxide decomposer, and c) radical scavengers

Conservation of poly(vinyl chloride) from the ultraviolet light that causes degradation, have very attention in recent decades. PVC formularizations have a large number of additives playing fundamental functions during their conversion and adjusting the behavior properties of final products. In this review, various types of additives are briefly discussed to show their important properties and reasons for addition to their essential mechanisms that cause retardation of photo-degradation. The additives including organotin(IV), UV screeners, organic UV absorber and free-radical scavengers

The quantum Finite Square Well (FSW) model is a well-known topic in most quantum mechanics (QM) books. A couple of equations can be derived from one dimensional Schrodinger equation for a finite potential well for describing the bound Eigen states within the well. Sometimes the FSW problem does not have an exact solution, yet, there are in fact exact solutions.In thiswork a computational techniques is adopted to find the exact solution for FSW. To achieve this computational solution, a computer program has been written in Basic language for calculating the Eigen state energy for a particle confined in finite potentialwell using the iterative method(IM). Six values of potential width have been studied with potential depth. The results showed that wider potential width led us to more bound states, while narrower potential width led us to less bound states. Six values of potential depth have been studied with potential width. The results showed that larger potential depth led us to more bound states, while smaller potential width led us to less bound states.A Comparison Between Finite and Infinite Potential Well has been also presented. The result of comparison showed that energy levels of an infinite well are much higher than that the corresponding energy levels for finite potential well. In general, the matching between the results of the iterative method and the graphical method (GM) proving that the iteration method can be regarded as a useful tool for describing the solutions of the 1-dimensional FSW problem

This study designed to investigate the effects of cherry extraction, almond oil, and their combination on physiological and some biochemical parameters in oxonic acid-induced hyperuricemic rats. Hyperuricemia was induced experimentally by intraperitoneal injection of rats with oxonic acid (OA) (250mg/kg/bw) daily for two weeks. The animals were randomly divided into six groups each included six rats: normalcontrol, Hyperuricemic (HU), HU+ Allopurinolas a positive control (AP)(5mg/kg/bw), HU+ Cherry extract (500mg/kg/bw), HU+ Almond oil (3ml/kg/bw), and HU+ co-treatment of (Cherry extract+ Almond oil). The treatments were administrated orally by intragastric tube (gavage) 1 h after OA injection daily throughout the study.At the end of the experiment, the ratswere fasted overnight, anesthetized then blood samples were collected for biochemical analysis and detection of oxidative stress.Results indicated that injection with OA induced hyperuricemia after two weeks in rats by increasing the level of serum uric acid significantly (P≤0.0001),and a significantelevation in the levels of BUN, SCr, XO, and LPO were observed, whereas the level of serum SOD decreased.Moreover, treatment with HU rats with AP, cherry extract and almond oil alone and in their combination group, all significantly decreased SUA, SCr, BUN (except for the almond oil group in which Scr and BUN decreased non-significantly)and reversing the results of oxidative stress. Finally, the results showed that the effects of combined treatment (cherry extract + almond oil) was near the actions of allopurinol

The main objective of this paper is to generalize the scalar Riccati differential equation for factional order derivatives using Caputo definition, and then to find its approximate solution using the variational iteration method. The present work consists of the statement and the proof of the variational iteration formula and then prove of its convergent to the exact solution. Some illustrative examples are considered and simulated using Mathcad 15 computer program

This paper presents a problem of community detection in sparse network. Graph represents the network with {0, 1} symmetric matrix, this matrix is defined to be sparse when most of its entries are zeros. The problem of community detection of this type of networks is non-deterministic polynomial-time hardness(NP-hard) problem. Here, we give a simple idea to regularize the sparse matrix by adding a heuristic parameter to the entries of the matrix. This work performs integrating Tabu Search via Fuzzy C-mean to compute variants of the modularity maximization. The results show the ability of the proposed method to define structure of the network by optimizing different types of the quality functions; the results show the global function gives the high value in must runs when apply it on a large sparse real networks