Al-Nahrain Journal of Science

Background: Myeloproliferative neoplasms (MPNs) are a range of clonal hematologicaldiseases with overlapping features, a specific mutation in the JAK2 gene, which encodes a tyrosine Kinase has been shown to be associated with the myeloproliferative phenotypes (PV, ET and PMF).Aim:Estimate the proportion of JAK2 V617F mutant gene and estimate the significance of antioxidant enzyme (Catalase) is mainly associated with increased oxidative stress this is resulting increase of the free oxygen radicals and relate it with suspectedmyeloproliferative neoplasms (MPNs) inIraqi patients. Materials and Methods: Total of (51) patients with suspected myeloproliferative neoplasms (MPNs) and 20 healthy individuals were analyzed for the JAK2 V617F mutation. After DNA extraction, detection of the mutation was done using (ARMS) PCR amplification, activity of Catalase was measured spectrophotometrically. Results: Of 51 patients, the JAK2 V617F mutation (V617F) was detected in 33 out of 42, with PV (81%), and four of patients with ET and PMF (40% and 50%, respectively). The prevalence of this mutation is more associated with male than female about (62%). Catalase activity was found highly significant (P< 0.01) among suspected MPN patients when compared with control group. Conclusion: JAK2 V617F mutation screening can be incorporated in the initial estimateof patients suspected of having MPNs. Catalase enzyme used a biomarker of enzymatic alteration in MPN Iraqi patients

The primary ligand (2-hydroxybenzaldine)-4-aminoantipyrine (L)was prepared as achelating ligand, Which was treated with V(IV), Cr(III), Fe(III) and Co(II) ions in alcoholic medium in order to prepare series of new metal complexes in the presence of the Co-ligand 8-hydroxyquinoline.These complexes were prepared by convential method and characterized by available techniques, FT-IR, UV-Visible, magnetic susceptibility, flame atomic absorption technique as well as elemental analysis and conductivity measurements. From these studiesmeasurements, asquare pyramidal structure proposed for V(IV) while octahedral geometry for Cr(III), Fe(III) and Co(II) complexes.Thebacterial activity of the prepared complexes have been determine and compared with the ligands

Atmospheric distillation according to ASTM-D 2892 and ASTM-D 86 distillation methods was carried out to one selected crude oil at Dura oil refinery. Its straight run fractions (Gasoline, Kerosene and Gas Oil) were tested using the physical properties: Boiling point, Density, Pour point, Surface tension and Aniline point in addition to the calculated results: API gravity, Kw factor and Correlation index to make a comparison with commercial fractions (refinery final products): Gasoline, Kerosene and Gas Oil. A special distillation curves were obtained for crude oil to determine the straight run fractions and for the commercial fractions to establish their characteristics and support the preliminary results of the physical properties with valuable datawhich enhanced the comparison. Distillation of commercial gasoline shows that it is heavier than straight run ones, while there were matching in the characteristics for kerosene. Commercial gas oil was lighter than straight run due to the presence of kerosene

New Schiff's bases with 1,2,4-triazole ring (3a-j) have been synthesized from 4-(4'-amino-5-mercapto-4H-1, 2, 4-triazol-3-yl) phenol (2) which is obtained from 4-hydroxybenzohydrazide (1) by a cyclization reaction. Infrared spectroscopy and 1H NMR spectroscopy were used to characterize the structure of synthesized compounds. All the final products are indicated as keto-enol and thione-thiol tautomers

n this paper,some pharmaceutical compounds were used and their impact on the photostability of polymer poly (vinyl chloride) (PVC) was study.The PVC films containing a variant concentration of compounds 0.25,0.5,1% by weight were produced by casting method from tetrahydrofuran (THF) solvent. The photostabilization activities of these compounds were determined by calculating the photodegradation rate constant for photostabilizer (kd). The stabilizing efficiency of pharmaceutical compoundsis attributed to the replacement of the labile chlorine atoms on the PVC chains by a relatively more stable moiety of the pharmaceuticalstabilizer. The Photostabilization activity of these compounds is determined by weight loss method with irradiation time

Indium oxide and indium zinc oxide composite (IZO) were prepared by sol-gel method and deposited on quartz substrate by dip coating technique. Two annealing temperatures (200 and 400◦C) and compositions were done. The structure and surface morphology of particles were characterized by X-raydiffraction (XRD), Atomic Force Microscope (AFM), FT-IR measurements. The XRD and AFM indicate decreasing in the particle size and improve of optical and electrical properties of composite with increasing of zinc oxide addition. The results of Hall measurements show that the In2O3and its composite (IZO) have n-type

The photochemistry of chelate complex 2-(6-methoxynaphthalen-2-yl)propanoic acid cobalt (II) Co(L)2 was studied in three polar aprotic solvents: Dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and chloroform (CHCl3). Monochromatic light of wavelength 311 nmwas used for theirradiation process at 25oC. Uv-visible spectral changes indicated an intra oxidation-reduction reaction occuring during the photolysis of Co(L)2 complex, with homolytic scission of Co-L bond. The quantum yield(d), rate of photodecomposition and reactivity ratio (k2/k-1) was determined in each solvent. These values always increaseas the polarity of the solvent increases and follow the order: DMSO > DMF > CHCl3The mechanism of photodecomposition of this complex under the applied conditions was proposed

The interpretation of the q-deformed 1-D quantum harmonic oscillator is investigated for two definitions of q-deformation. This investigation is achieved by using Zaslavskii’s method to obtain the Heisenberg equations of motion (quantum Liouville equations)in the undeformed phase space. These quantum Liouville equations exhibit a non-commutative geometry produce from the existence of the dilatation operator which is inherent in the q-deformation process. The classical limits of these equations are obtained by applying a special classical limiting condition to produce the classical Liouville equations of the q-deformed oscillator. These classical Liouville equations are solved by using the method of characteristics in order to obtain the classical probability distribution functions for this system. The 2-D and 3-D behaviors of these functions were then investigated using a computer visualization method. The results of the mathematical derivations together with the computer visualization method show that the classical limit of the quantum Liouville equations for the q-deformed 1-D quantum harmonic oscillator are statistical in nature where the nonlinearity parameter for the q-deformed oscillator is connected with. This result conforms to that obtained by Ghosh et al. for the undeformed 1-D quantum harmonic oscillator. The obtained classical probability distribution functions exhibit whorl shapes that evolve with time in phase space that are similar to the shapes obtained for the 1-D classical q-deformed oscillator. These whorl shapes in phase space are similar to those introduced by Milburn for the 1-D classical anharmonic oscillator. This similarity results from the fact that the anharmonicity itself represents a kind of deformation with a frequency that is a function of amplitude.

nthispaper,weconsidertheDirac-Hartree-Fockequationsforsystemhasmany-particles.ThedifficultiesassociatedwithGaussiansmodelarelikelytobemorecomplexinrelativisticDirac-Hartree-Fockcalculations.Toprocessingtheseproblem,weuseaccuratetechniques.Thefour-componentspinorswillbeexpandedintoafinitebasis-set,usingGaussianbasis-settypedyall.2zptodescribe4-componentwavefunctions,inordertodescribetheupperandlowertwocomponentsofthe4-spinors,respectively.ThesmallcomponentGaussianbasisfunctionshavebeengeneratedfromlargecomponentGaussianbasisfunctionsusingkineticbalancerelation.Theconsideredtechniqueshavebeenappliedfortheheavyelement83Bi.WeadopttheGaussianchargedistributionmodeltodescribethechargeofnuclei.Tocalculateaccuratepropertiesoftheatomiclevels,weusedDirac-Hartree-Fockmethod,whichhavemoreflexibilitythroughGaussianbasis-settotreatrelativisticquantumcalculationforasystemhasmany-particle.Ourobtainedresultsfortheheavyatom(Z=83),includingthetotalenergy,energyforeachspinorinatom,andexpectationvalueofgivearegoodcomparedwithrelativisticVisschertreatment.ThisaccuracyisattributedtotheuseoftheGaussianbasis-settypeDyalltodescribethefour-componentspinors

ZnCdO films were compounded by spray pyrolysis on glass substrates at temperature of 250Co, using solution of zinc acetate and cadmium acetate salts with various additions concentrations of Zn (25, 50, 75)%. Structure and optical properties have been analyzed using XRD and UV-Vis spectroscopy. XRD analysis premiered that thin films were of polycrystalline nature with face centered cubic structure. The crystallinity increaseswhen the Zn additions increases. Film additions with 75% Zn has minimum value of dislocation density and strain which confirm the improved crystallinity of the film.The optical results featured the transparency of the ZnCdO films is greater than 80% in the visible region, and we found when the concentration of Zn additions increase the optical band gap increasing from (2.49 to 2.9eV).

In this work preparation and characterization of Aluminum thin films by laser induced forward transfer has been studied. These thin filmswere deposited by thermal evaporation on glass substrates as donor substrates.These thin films were irradiated by a single pulse and transferred to a silver (Ag) and silicon (Si) receiver substrates. The laser source used for LIFT process was a Nd-YAG Q-Switching second harmonic generation (SHG) Pulsed Laser with a wavelength 532nm, repetition rate 1-6 Hz ,and pulse duration 10ns.Deposited size, morphology and adhesion to the receiver substrateas a function of the applied laser fluence are investigated.

The proton momentum distributions (PMD) and elastic charge form factors,F(q),of the ground state for some even mass nuclei in the 1f-2pshell,such as 56Fe, 62Ni and 68Zn nucleihave been calculated in the framework ofthe Coherent Density Fluctuation Model (CDFM) and expressed in terms ofthe fluctuation function (weight function) (|????(????)|2). The fluctuation function has been related to the chargedensity distribution (CDD) of the nuclei and obtained from the theory and experiment. The feature of the long-tail behavior at high momentum region of the proton momentum distributions has been determined by both the theoretical and experimental fluctuation functions. The observed electron scattering form factors for 56Fe, 62Ni and 68Zn nuclei are in very good agreement with the present calculations throughout all values of momentum transfer q

The identifying the viral agents such as norovirus genogroup I (NVGI),norovirus genogroup II (NVGII) and rotavirus (RV) is critical to the development of effective preventive measures. This study aimed to determine the prevalence of common enteric virusesin children <5 years old presented with diarrhea in Mosul Governorate. Due to the lack of recent reports on surveillance of rotavirus and norovirus infection in, One hundred fecal samples were collected between December 2012 to March 2013 from children <5 years of age who presented with acute gastroenteritis in the Al-Salam hospital and Al-Madena clinical laboratory in Mosul .All samples were tested for rotavirus using latex agglutination test, and norovirus using (RT-qPCR) for NVGI and NVGII. Enteric viruses were detected in 42 out of the 100 (42%) children who presented with acute diarrhea. In that 42 samples positive for enteric viruses, at least one viral agent was found. NVGII was the most frequent virus identified in 24cases (57.14%), followed by rotavirus in 14 cases(33.33%), and NVGI in 4 cases (9.52%). The result demonstrated a high prevalence infection with the both viruses in age group under 1yearswith high incidence of 22 Bottle-Feed 22 cases (52.37%).Norovirus and Rotavirus co-infection was occurred in 9 cases presented 21.24% of all cases.

This study aimed to validate two DNA extraction methods collectedfrom buccal cellsto gain a genomic DNAand to determine the effect of process time (from collection time to amplification). Total number of 116 buccal swab samples from unrelated healthy volunteers were subjected to DNA extraction by using twomethods: modified (phenol chloroform) (Organic) and PrepFiler Forensic DNA Extraction kit. DNA was evaluated according to the: quantity, integrity and suitability for genetic analysis. The DNA yield and purity were measured by Nano drop Spectrophotometer. Organic method was modified from the classical method (addition Dithiothreitol to lysis buffer),The purity average values increased from 1.4 to 1.6 and it had the highest average concentration (73.3ng/μl) while the highest purity was observed in PrepFiler Forensic DNA Extraction kit with average (1.82).Delayed in sample processing effect both quantityand integrity of the extracted DNA. All samples weregenetically analyzed at 16 STR with amelogenin (DNA markers) included in the AmpFlSTR® Identifiler™ PCR Amplification Kit panel from Applied Biosystems. Buccal cell swabs were very good source of genomic DNA especially for large population studies

The purpose of this study was to determine the antibacterial effect of the amino acid histidine against two pathogenic bacteria Escherichia coliand Staphylococcus aureus. No antibacterial activity was observed for histidine at all tested concentrations.The sensitivity test for E.coli andS. aureuswas performed against ten types of antibiotics. The antibiotics used for E.coliwere Levofloxacin(Lev), Streptomycin(S), Rifampicin(Rp),Metronidazole(Mz), Cloxacillin(Cx), Ciprofloxacin(Cip), Tetracycline(T), Nalidixic acid(Na), Penicillin(P) and Vancomycine(Va) and the results of inhibition zones were 44, 14,8, 0,0, 35, 24, 28, 16 and 14 mm respectively. When the Histidine added at concentration 10 mg/ml to Mueller hintone agar, the inhibition zones became 24, 12, 18, 0, 0, 24, 32, 25, 13 and 14 mm for each antibiotic respectively. The antibiotics used forStaph. aureusareLevofloxacin (Lev), Gentamicin(Gm), Rifampicin(Rp),Metronidazole(Mz), Cloxacillin(Cx), Ciprofloxacin(Cip), Tetracycline(T), Clarithromycin(Cla), Vancomycine (Va) and Chloramphenicol (C). Result of inhibition zones were 40, 30, 0, 0, 0, 22, 10, 0, 10 and 22 mm when the Histidine added at concentration 10 mg/ml to the mueller hinton agar, the inhibition zones became 30, 20, 16, 0, 0, 26, 15, 0, 10 and 22 mm. Applicable experiment of the histidine effect was conducted on resistant and sensitive isolates against Histidine of Mycobacterium tuberculosis(TB) in Pulmonary Institute in Baghdad. It was found that mixing of Histidine with Rifampicin changed the response of resistant isolate against Rifampicin and turned into sensitive.This results may encourage mixing antibiotics and Histidine instead of using the more effective and harmful antibiotics against the resistant isolates

The green synthesis of Ag nanoparticles was prepared biologically in the presence of Nerium oleanderextract and examined by UV-Vis spectrophotometer, Infrared (IR) spectroscopy and scanning electron microscopic (SEM) to characterize Ag nanoparticles.The effect of alcoholic extract alone, Ag nanoparticles determined on some pathogenic microorganisms. The alcoholic extract showed no considerable influence on the growth of tested strains, while the synthesised Ag nanoparticles show different effect on the growth of the microbial species. .The highest inhibition zone was shown on E.colireaching (31mm) followed byP. aeroginosa(30 mm), S. aurous with inhibition zone reached to (23mm), K. pneumonia(22mm), and C.albicans(20mm). The effect of antibiotic (Gentamycin) has been studied alone on microbial growth with inhibition zone (17 mm) on C. albicansfollowed by E.coliwith (13mm), and finally in S.aurousinhibition zone reached (15mm). The antimicrobial effect of (alcoholic extract-Gentamycin) was tested after mixing togathor which showed variotion with the highest effect on C. albicansin (19 mm), followed by S. aurous, and E.coli in (13 mm, 15 mm).respectively, K. pneumonia,,P. aeroginosashowed no inhibiting effect by alcoholic extract-Gentamycin complex.The ability of crude alcoholic extract to remove free radicals was determined by estimating antioxidant activity. The activity of the plant extract on the DNA molecules in vitroshowed low absorbance values related to the increase in the concentration of ethanolic extract

This studydescribes how the subject of discrete mathematics can be integrated with programming techniques for the purpose of teaching. Achieving such integration which can be understood easily by the students reminds that this subject is usually taught to the firstyears of the academic study. Python is one of such programming language which can be easily understood and practiced compared to other language such as C++, java etc. for instance using Python does not require such effort in designing the structure of program.By providing students with a python language they could use to understand both discrete mathematics and programming effectively and efficiently in the most appropriate manner,this reduce difficulties of imagining the logical way of writing programs also give a brilliant way to rise programming skills and give a simple way to study mathematics practically not only theoretically. This paper represent a case study for teaching discretemathematics using Python programming language to secondyear students at computer science department -faculty of science, University of Duhok were given practical lectures for inserting pythonwith their theoretical discrete mathematic study.

In this paper, we present modified conjugancy coefficient for the conjugate gradient method. This modification using the extention Dai and Yuan Method to solve non-linear programming problems. The algorithm of particle swarm optimization (PSO) is applied in this work, to coefficients extracted by features extraction techniques. The sufficient descent and the global convergence properties for the proposed algorithm are proved. The numerical results of our finding for the large scale optimization problem are very encouraging comparison with standard methodsThe experimental results showed that PSO can generate excellent recognition results with the minimal set of selected features. Finally, the algorithm PSO based approaches are proposed and the influence of PSO parameters on the performance is evaluated.

In cryptography, hash functions have very important effects when it’s used inthe messageintegrity, digital time stamping, and digital signature. Hash functions compute hash value by a set of logical (primitive) operations that perform on a (32) bit words for authentication. Authentication process becomes very important especially manipulated message undetected that can have disastrous effects in Network Management and E-Commerce. In this paper, a proposal for new hash function based on MD5 is developed. The length of message digest is 224-bit through (4) rounds that each round has a pair of (16) steps. The final number of steps is (128) that make stronger function against collision attests and more secure than MD5