Ibn Al-Haitham Journal For Pure and Applied Sciences

Low cost Co-Precipitation method was used for Preparation of novel nickel oxide (NiO)
nano particle thin films with Simple, with two different PH values 6, 12 and its effect on
structural and optical properties as an active optical filter. Experimental results of structural
properties X-ray diffraction (XRD) showed that both Nickel oxide nanoparticles with (PH=6
and 12) have polycrystalline structure smaller average particle size about 8.5 nm for PH = 6 in
comparison with PH = 12. Morphological studies using Scanning electron microscopy (SEM)
and atomic force microscope (AFM) show uniform nano rod distribution for PH=6 with
smaller average diameter, average roughness as compared with NiO with PH=12 that showed
larger diameter, grain size, spherical shape with scope of excellent sensing applications due to
high roughness. Optical properties results show blue shift for PH = 6 as compared with
PH=12m leading to potential of optoelectronic applications and as active optical

This study aims to prepare Cadmium Sulphide (CdS) thin films using thermal Chemical
Spray Pyrolysis (CSP) on glass of different temperatures substrate from cadmium nitrate
solution. Constant thickness was (430 ± 20 nm) and the effect of substrate temperature on the
optical properties of prepared thin films. Optical properties have been studied from
transmittance and absorbance spectral within wavelengths range (360 - 900 nm). The results
show that all the prepared films have a direct electron transitions and optical energy gap
between (2.31-2.44 eV). They also show that the transmittance and optical energy gap of
films prepared from nitrate solution increase with increasing of substrate temperature, then
transmittance start downward with the continued increase in temperature (400, 450) oC.

The research aims to study the corrosion of aluminum alloy (6061) in 0.6 mol. dm-3 NaCl solution
in base medium ????pH ???? 12???? was examined with out and with Gallic acid as environmentally –
friendly corrosion inhibitor at temperature range (298-313) K. The inhibitive action of gallic acid on
corrosion of aluminum alloy (6061) in KOH solution was examined through electrochemical
polarization method using potentiostatic technique and surface analysis by optical microscopy,
Polarization measurements indicate that the examined compound act as a mixed type inhibitor.
Results appeared that the inhibition occurs through adsorption of the inhibitor molecules on the metal
surface and it was obeyed Langmuir adsorption isotherm. Some thermodynamic parameters
activation energy ????E???????? and ????ΔG????????????.???? were calculated to elaborate the mechanism of inhibition. The
surface characteristic of the inhibited and uninhibited metal samples was examined by optical
microscopy.

A new class of thiadiazole /silica nanocomposites with chemical bonds between thiadiazole
monomers and modified nanosilica surface were synthesized by free radical polymerization.
Presence silica nanoparticles in the structure of nanocomposite showed effectively improve
the physical and chemical properties of Producing polymers. A nanocomposite material with
feature properties comparison with their polymers. The structure and morphology of the
synthesis materials were investigated by FT-IR spectrum which display preparation new
thiadiazole compounds and polymerization monomers. FT-IR showed disappeared double
bond (C=C) of monomers, due to produce long chains of thiadiazole polymers and
nanocomposite. X-ray diffraction gave idea about crystalline structure of nanoparticles and
nanocomposite, X-ray showed that silica nanoparticles have high intensity at 18000, due to
nanoscale of particles which allowed for particles aggregation together. While nanocomposite
show low intensity due to reacted thiadaizole polymer chains with silica nanoparticles
surface. The distribution of nanoparticles had characterized by Atomic forces microscopy
AFM. AFM results shown roughness in the surfaces of nanocomposites C1 and C2,
comparison with silica nanoparticles which gave smooth surface. The roughness attributed to
reaction between functionalized surface of silica nanoparticles and chains of thiadaizole
polymers, which led to change in size particles distribution and surface of particles that refer
to nanocomposite.

This study is planned to find relationship between interleukin-33 (IL-33) with its receptor
interleukin-1 receptor 4 (IL-1R4), and assurance IL-33/IL-1R4 proportion as biomarker to
atherosclerosisin rheumatoid arthritis (RA) Iraqi female’s patients with and without
dyslipidemia. This study was attempted at Baghdad Teaching Hospital included 60 female’s
patients with RA that were isolated into: 30 patients with dyslipidemia(G2), 30 patients
without dyslipidemia(G3) and 30 individuals as control group (G1). Patients were
experiencing treatment by methortexiene medication, analyzed by rheumatoid factor (RF) and
erythrocyte sedimentation rate (ESR) tests. All patients and control groups age ranged from
(30-55) years. The results show an increase in ESR, RF, IL-33, and IL-1R4 levels. In addition
to decrease in IL-33/IL-1R4 ratio in the two patient’s groups when contrasted and control
group. The momentum examine inferred that the level of ESR, and IL-33 in RA Iraqi females
patients with dyslipidemia were higher than that in RA Iraqi females patients without
dyslipidemia, while the level of IL-33/IL-1R4 ratio in RA Iraqi females patients with
dyslipidemia was lower than that in RA Iraqi females patients without dyslipidemia patients;
in this manner the IL-33/IL-1R4 ratio may be used as a biomarker in diagnostic early porn to
atherosclerosis in RA females patients with dyslipidemia.

The compound 2,2'-(((1H-benzo(d) imidazol-2-yl)methyl)azanediyl)bis(ethan-1-ol) was
reacted with benzyl bromide to afford compound (1) which used as row material to prepare a
series of compounds through condensation reaction, the starting compound were reacted with
tosyl chloride to protect the OH group to afford compound 2, then reacted benzyl bromide to
produce compound (2), then the compound (2) treated with three compounds (2-
mercaptobenzthiazole, 2-mercaptobenimidazol and 2-chloromethyl benzimidazole) to form
compounds 3a, b, 4a,b and 5a,b respectively. In the another step the click reaction of
compound 2, 2'-(((1H-benzo(d)imidazol-2-yl) methyl) azanediyl)bis(ethan-1-ol) with
Propargyl bromide produce compound 6 which reacted with sodium azide or benzyl azide to
afford the compounds 7 and 8. The synthesized compounds were characterized and measured
the physical properties via the FT-IR, HNMR, besides to the CHN analysis. These newly
compounds were screened their antibacterial and antifungal activity. Compounds 1, 2a and 8
showed significant antibacterial activity as well these compounds exhibited either low or
moderated antifungal activity.

In this work, new di-acid monomers 4, 4’-di-carboxillic-4”-bromo-2”, 6”-dimethyl triphenylamine (Ma),
4, 4’- di-carboxylic -4”-chloro-2”, 6”-dimethyl triphenylamine (Mb) and 4, 4’- di-carboxylic -2”,4”-
dichloro-6”-methyl triphenylamine (Mc) were synthesized by reaction of p-cyanobenzofluride with three
different aromatic amines (4-bromo,2,6-dimethyl aniline, 4-chloro,2,6-dimethyl aniline and 2,4 dichloro,
6- methyl aniline ) via aromatic nucleophilc substitution method to form three di cyano intermediates 4,
4’-Dicyano-4”-bromo-2”, 6”-dimethyl triphenylamine (Da), 4, 4’-dicyano-4”-chloro-2”, 6”-dimethyl
triphenylamine (Db) and 4, 4’-dicyano-2”,4”-dichloro-6”-methyl triphenylamine (Dc) which form final dicarboxylic
monomers after alkaline hydrolysis. Finally, these monomers react with two different aromatic
di amines, phenylene diamins and benzidine respectively via polycondensation reaction to form final
polyamides 4"-bromo-2", 6"-dimethyl-triphenylamine-4, 4'-polyphenylbenzamide (Pa), 4”-chloro-2”,6”-
dimethyl- triphenylamine-4,4'-polyphenylbenzamide (Pb), 2”,4”-dichloro-6”-methyl-triphenylamine 4,4'-
polyphenylbenzamide (Pc),4"-bromo-2",6"-dimethyl triphenylamine-4,4'- polyphenylbiphenylamide (Pd),
2”,4”-dichloro-6”-methyl-triphenylamine-4,4’-polyphenylamide (Pf). The chemical structure of these
polymers characterized by FTIR and NMR techniques. All the results of polyamides showed excellent
solubility in most polar solvents to form strong thin films. The polyamides possess a good thermal
stability with height glass transition temperatures (Tg). Polyamides in DMSO solvent gave strong
photoluminescence PL. Thin casting films of these polyamides in cyclic voltammetry (C.V) on
glass base of iridium-tin oxide (ITO) as working electrode in dry CH3CN solvent contains 0.1 M
of tetrabutylantimoneperchlorate (TBAP) as an Electrolyte gave one redox wave.

In this paper, a Monte Carlo Simulation technique is used to compare the performance of
MLE and the standard Bayes estimators of the reliability function of the one parameter
exponential distribution. Two types of loss functions are adopted, namely, squared error loss
function (SELF) and modified square error loss function (MSELF) with informative and noninformative
prior. The criterion integrated mean square error (IMSE) is employed to assess
the performance of such estimators.

Let Ḿ be a unitary R-module and R is a commutative ring with identity. Our aim in this
paper to study the concepts T-ABSO fuzzy ideals, T-ABSO fuzzy submodules and T-ABSO
quasi primary fuzzy submodules, also we discuss these concepts in the class of multiplication
fuzzy modules and relationships between these concepts. Many new basic properties and
characterizations on these concepts are given.

In this paper we design a Simulink model which can be evaluate the concentration of Copper,
Lead, Zinc, Cadmium, Cobalt, Nickel, Crum and Iron. So, this model would be a method to
determine the contamination levels of these metals with the potential for this contamination
sources with their impact. The aim of using Simulink environment is to solve differential
equations individually and as given data in parallel with analytical mathematics trends. In general,
mathematical models of the spread heavy metals in soil are modeled and solve to predict the
behavior of the system under different conditions.

In this paper, the concept of ????−contraction mapping on a ????-metric space is extended with a consideration on local ????− contraction. As a result, two fixed point theorems were proved for ????− contraction on a closed ball in a complete ????-metric space.

This paper concerns with deriving and estimating the reliability of the multicomponent
system in stress-strength model R(s,k), when the stress and strength are identical
independent distribution (iid), follows two parameters Exponentiated Pareto Distribution
(EPD) with the unknown shape and known scale parameters. Shrinkage estimation
method including Maximum likelihood estimator (MLE), has been considered.
Comparisons among the proposed estimators were made depending on simulation based
on mean squared error (MSE) criteria.

The concepts of the modified tuple coincidence points and the mixed finite monotone
property is introduced in this paper. Also, the existence and uniqueness of modified
tupled coincidence point is discusses without continuous condition for mappings having
mixed finite monotone property in generalized metric spaces.

A submodule N of a module M is said to be s-essential if it has nonzero intersection with any
nonzero small submodule in M. In this article, we introduce and study a class of modules in which
all its nonzero endomorphisms have non-s-essential kernels, named, strongly ????-nonsigular. We
investigate some properties of strongly ????-nonsigular modules. Direct summand, direct sums and
some connections of such modules are discussed.

In this study, He's parallel numerical algorithm by neural network is applied to type of
integration of fractional equations is Abel’s integral equations of the 1st and 2nd kinds. Using a
Levenberge – Marquaradt training algorithm as a tool to train the network. To show the efficiency of
the method, some type of Abel’s integral equations is solved as numerical examples. Numerical
results show that the new method is very efficient problems with high accuracy

In the current study, the researchers have been obtained Bayes estimators for the shape and
scale parameters of Gamma distribution under the precautionary loss function, assuming the
priors, represented by Gamma and Exponential priors for the shape and scale parameters
respectively. Moment, Maximum likelihood estimators and Lindley’s approximation have been
used effectively in Bayesian estimation.
Based on Monte Carlo simulation method, those estimators are compared depending on the
mean squared errors (MSE’s). The results show that, the performance of Bayes estimator under
precautionary loss function with Gamma and Exponential priors is better than other estimates in
all cases.

The huge amount of documents in the internet led to the rapid need of text classification
(TC). TC is used to organize these text documents. In this research paper, a new model is
based on Extreme Machine learning (EML) is used. The proposed model consists of many
phases including: preprocessing, feature extraction, Multiple Linear Regression (MLR) and
ELM. The basic idea of the proposed model is built upon the calculation of feature weights by
using MLR. These feature weights with the extracted features introduced as an input to the
ELM that produced weighted Extreme Learning Machine (WELM). The results showed a
great competence of the proposed WELM compared to the ELM.