Al-Nahrain Journal of Science

In this work, Co doped copper oxide (II) thin films (COTF) were deposited by chemical spray pyrolysis method. Structural analyses have confirmed monoclinic polycrystalline for COTF deposited at 400ºC substrate temperature. Compared with pure COTF, Co-doped samples showed larger grain size with distortion in the structure. With the increase of doping concentration the structure changes to amorphous. Bandgap energy was 2.45 eV before doping and 2.6 eVat 3% doping and began to decrease with increasing doping concentration. Activation energy was found to be 0.24 eV and it decrease with increase of doping. The Co (6%) doped –COTF are deposited on silicon substrate to fabricate CuO-Si heteroـjunction

TiO2films doped with Fe at (0.1, 0.3, 0.7, 1.5 at %) were successfully deposited on the fluorine doped tin oxide (FTO)-glass substrate using hydrothermal technique. X-Ray Diffraction (XRD) analysis showed that the only phase obtained of TiO2is rutile. Moreover, the crystallinity did not have remarkable change after doping. Ultra violet-visible (UV-vis) spectroscopy analysis show that the energy bandgap value (Eg) decreases slightly with the increase of the doping concentration from 0.1 to 0.3 at%. The reflectivity measurements in general gave identical results but with higher values of Eg. Urbach energy for doping concentrations 0.7 and 1.5 at % is quite high and in the range 1-2 eV.

This contribution, direct new azo compounds synthesis via coupling benzidine with 4-hydroxy or alkoxy benzaldehyde(A1-A7).Schiff`s bases (B1-B7) were synthesized by condensation of azo compounds (A1-A7) and 2-aminobenzothiazole. New seven compounds of oxazepines derivates (C1-C7) have synthesized via the reaction between phthalic anhydride and Schiff bases, which that previously prepared to produce seven organic compounds as heterocyclic. As well, the oxazepines synthesized have characterized via (FT-IR, and 1HNMR spectroscopy for several of them) and physical properties have recorded. Finally, oxazepine compounds have tested against bacteria two kinds as gram positive and gram negative.

Nitro Schiff base ligand of 2-(biphenyl-4-yl)-3-((2-(2,4-dinitrophenyl)hydrazono)methyl) imidazo[1,2-a]pyridine (BDNHMIP) was synthesized, identified and used in spectrophotometric determination of Co(II) at 530nm. The suggested method of Co(II) determination was performed at optimum analytical parameters of3.2 ml/min flow rate, 137.4L ligand volume, 98.1L Co(II)volume, 1minutes residence time in reaction coil, and as a result 48 sample/hour of method throughput was accomplished.The proposed method performed linearity of 25-400ppm, molar absorptivity coefficient of 121.5704103L.mol.1cm1, and L.O.D of 2.28ppm. The suggested method was successful applied for determinationof Co(II) content of vitamin B12injection samples with high recovery of 99.5-100.3% and minimum relative error percent of-0.3 -0.5%.

This research intends to design and simulation a model of "Lead-acid battery"using OrCADPSPICE. It can be used for most renewable energy systems applications. The circuit simulator PSPICE is used to compose battery model at Voc 12V, Isc 4.8A, and six cells at 25 C. This model has treated the battery parameters as the SOC, battery voltage and temperature of the battery at a charge and discharge state.The simulation results were compared with the battery datasheet, and it showed good agreement. The battery model of lead-acid is defined in the PSPICE library, so it could be used for most renewable energy systems applications.

A magnetic sensor, using a Hollow core-photonic crystal fiber infiltrated by a small amount of a magnetic nanofluid Fe3O4, is designed. The optical properties of this kind of fiber and the relation between the magnetic field and the magnetic nanofluid are employed to build the sensor. Laser light with the wavelength 674 nm is used to conduct the setup. A linear response in the wavelength-shift, of the transmitted spectrum corresponding to the applied magnetic field, is obtained. The wavelength-shift maintains its linearity throughout a range of magnetic field (0-245) Oe. The magnetic sensor shows a significant sensitivity about 19.03 m/Oe.

Multicorephotonic crystal fibers (MPCF) with identical and non-identical cores are analyzed numerically using Comsol Multiphysics software. Investing coupling between cores limiting by parameters, such as the slight change in central core diameter; the separation distance between cores and the wavelength were investigated. Controlling these parameters allows predicting the mode propagation. Moreover, anisotropy in all cores diameters of multicores photonic crystal fibers, as a result, the change of all core diameters simultaneously lead to different of coupling behavior, suppresses the coupling between the core modes by inducing a small mismatch between the modes such that the core modes to be uncoupled through this change. Then this leads to the light mode propagate independently of their neighbors and gives rise to the mode to primarily remain in a certain region of the MPCF array. These properties suggest that multicore PCFs could be a novel candidate for both multiplex or de-multiplex.

In this paper, we present the concepts of fuzzy order convergence, fuzzy statistical (O)-Convergence (Fso-Convergence), and fuzzy statistical Cauchy sequence in fuzzy Riesz spaces, their fundamental properties are established, some important theorems are given, and show every (Fso-Convergence) can be fuzzy statistical Cauchy and prove that any one of two sequences is fuzzy order converge leads to the second sequence is fuzzy statistical (O)-Convergence. In addition, we have also demonstrated through examples that, in general, “fuzzy ordered linear space, need not to be a fuzzy Riesz spaces”

This paper discusses reliabilityof the stress-strength model, the reliability functions ????1and ????2for two and three components which has two and three strengths independently are exposed to a common stress respectively using Generalized inverted Kumaraswamy distribution(GIKD)with unknown shape parameter and known shape and scale parameters, after that the parameters are estimate from a stress-strength model. Estimate the reliability ????1, ????2by two methods (ranked set sampling and Bayes).A numerical simulationstudy a comparison between the two estimators byMean square erroris performed. It is found that best estimator between the two estimators isBayes estimation method

Herstein proved that anyJordan homomorphism onto a prime ring of characteristic of different from 2 and 3 is either a homomorphism or an anti-homomorphism. In this paper the concept of Generalized Jordan triple ()–Higher Homomorphisms (GJT()-HH) where andare two commuting homomorphisms are introduced as follows: A family of additivemappings of into is said to be a Generalized Triple -Higher Homomorphism (GT()-HH)if there exist a triple -higher homomorphism (T () –HH)such that for each and for all , we have:∑()()()and is said to be the relating triple -HH.We will primarilyextend the result of Hersteinon it. It should be proved that every GJT()-HH of ring into prime ring is either GT()-HH or triple () higheranti-homomorphism (T()-HAH).