JOURNAL OF EDUCATION AND SCIENCE

New cobalt (II) complexes with mixed ligands including [(2- oxime-4-hydrazone) pentane (L1H)
and 2-chlorobenzaldehyde thiosemicarbazone(T1H) ,or 3,4-dimethoxy acetophenone
thiosemicarbazone (T2H); glycine (GH) or metformin (mf)] have been prepared in both pH (6.5-7)
and (9.5-10) using classical and microwave techniques. The resulting complexes have been
characterized using physio- chemical and spectral techniques. The study suggested that the
complexes have the generalformulate: [Co(L1H)(TH)(BH)](CH3COO) 2 at pH (6.5-7) and
[Co(L1)(TH)(G)]or[Co(L1)(T)(mf)) at (9.5- 10), respectively {where TH= T1H or T2H; T=
deprotonated T1H or T2H; L1H=L1=deprotenated; BH= GH or mf; G= deprotonated GH].
Hexacoordinated mononuclear complexes having distorted octahedral geometries have been
investigated. No laser effects have been observed on solid ligands and complexes indicating that the
compounds are stable and not affected by He-Ne laser (wave length are = 600- 700 nm). The
biologicall activity of the ligands and complexes have been evaluated by agar plate diffusion
technique against Echerichia coli, Klipsila pnnemoia, Staphylococcus aureus and Pseudomonas
aeruginosa. Some compounds have been found to have antibacterial activity.

Hydrogen adsorption and storage on nickel- activated, pure graphene and boron-doped graphene was
study using density functional theory simulations based on generalized gradient approximation
methods (DFT-GGA). It was found that the nickel atoms tend to clustering on the surface of pure
graphene due to the high cohesive energy of nickel compared to the energy of nickel binding to the
surface of pure graphene, which decrease the storage capacity of hydrogen. It was also found that the
storage capacity of seven hydrogen molecules on pure and activated graphene with a nickel atom is
equal to (10.2 wt.%) With an average binding energy (0.27 eV), and the storage capacity for the
same number of hydrogen molecules is (11.3 wt.%) With an average binding energy (0.22 eV), This
indicates that the adsorption process will take place at ambient conditions. The process of inoculating
graphene-doped boron and nickel activating is an effective strategy for improving the average
binding energies and the storage capacity of hydrogen molecules in the graphene nanostructures.

This study includes the collection of (90) blood samples, eighty samples belongs to patients
experienced to spontaneous or recurrent abortions, and the ten samples from women with normal
pregnancy. The results showed a significant increase in the levels of cytokines in patients serum as
their concentrations were (218.15±105.1 pg/L for IL-1β, 63.10±35.17 ng/L for TNF-α and
31.77±25.3ng/ml for IFN-) compared to the control as it(151.0±0.76 pg/L ,34.96±0.42 ng/L and
11.15±3.49 ng/ml) for the cytokines respectively. The level of cytokines reached (352.18 pg/L,117.8
ng/L and 63.8 ng/ml) for IL-1β,TNF-α and IFN- respectively in women infected with
Toxoplasmosis compared to non-infected women (337.1 pg/L , 101.3 ng/L and 54.06 ng/ml). This
indicate that toxoplasmosis has a role in the induction of immune system

Recently, the properties and applications of porous has become the main subject of a vast numbers
of books and review articles. Porous silicon has demonstrated significant versatility and promise for
a wide range of optoelectronic applications due to its large surface area and intense
photoluminescence at room temperature. In this review, we describe the fabrication techniques and
experimental improvements made towards porous silicon (PSi) and we provide a full picture of
realization and characterization of this material. We also highlight its important chemical, structure
and surface properties. Additionally, we will introduced the techniques that have been used to
characterize porouse silicon, including Fourier transform infrared spectroscopy, X-ray diffraction
measurements, atomic force microscope images (AFM) and a scanning probe microscope (SEM).
Moreover, the effect of the current density and etching time are also documented in this review. In
summary, porous silicon has undergone vast improvement in both fabrication and characterization
methods, which makes it an attractive modern material

The fusion technique of the spectral bands captured by the sensors carried onboard satellites
is one digital processing method for extracting information and detecting ground targets. Image
fusion - also known as pan-sharpening-provides the necessary means to combine many images
into a single composite image that is suitable in visual interpretation processes or in digital
interpretation. The principal objective of this study is to find the best suitable algorithms for
obtaining integrative information from several separate images in one combined image. Based
on the above, a special software system was designed to implement and test the fusion methods
used in remote sensing applications by selecting and applying a Shift Invariant Wavelet
Transform (SIWT) method to the remote sensing images and then comparing with four other
different image fusion algorithms. Two objective mathematical methods were also used to
measure the amount of shared information obtained in the images resulting from the fusion, as
well as using the visual and Near-Infrared images of the new Sentinel-2 European satellite for a
part of Nineveh province as experimental images. The results showed a preference of the
wavelet transform method over the other fusion methods for the remote sensing images.

Algae biofuels is considered as an alternative source to fossil fuels. In recent decades,
there was a significant increase in the use of energy sources in order to avoid the depletion of
traditional sources such as coal and petroleum. The produced fuel from algal oil had
important characteristics compared to that from other vegetable crops. This is due to the short
life cycle of development, a fast-growing and easy to be developed. In this study, three types
of micro-algae Scendesmus dimorphus, Chlorella vulgaris and Chlorococcum humicola were
used and grown in in a 5 liter photobioreactor. The dry biomass productivity of the three
algae was estimated, and then a chemical analysis of the total fatty was performed to detect
their biological contents as well as diagnose the fatty acid. Results showed that S. dimorphus
produced the highest levels in both biomass, 1.58 g l
-1
from dry weight and estimation of the
total fat indicated C. vulgaris has the highest total fat yield, at 29.6 %. Results of fats
characterization using )GLC) showed that S. dimorphus produced the high percentage of
saturated fatty acids for the meristic acid ester (C14: 0) by 47% and the lincoseric acid ester
(C24: 0) was 7.194%. In contrast, both Chlorella vulgaris and Chlo. humicola showed less
level of saturated fatty acids. This indicates the suitability of algae oil derived from S.
dimorphus in the synthesis of fatty acid, a major source in producing biofuels.

In high-voltage gaseous insulation systems, the corona discharge is important because it can lead to
drop of the insulating qualities of the gas in addition to the production of harm by-products. The
influence of the applied voltage variation on the negative corona characteristics in a coaxial electrode
geometry has been investigated based on one-dimensional dynamic model of corona discharge
includes one-dimensional continuity equations and Poisson equation. The one-dimensional fluid
model of corona discharge is solved by finite difference flux correction method (FD-FCT). The
calculations were performed on oxygen gas under the atmospheric pressure using COMSOL
multiphysics software. The corona discharge parameters are simulated under different voltage values
4KV, 6KV, 7KV, 8KV and 10KV, respectively. The effect of the applied voltage on the spatial
distribution of main charged species and electron as well as the ozone was considered. The results
show that as the negative applied voltage on the cathode increased the total current density also
increase while the electron density decrease. The ozone density do not much affected by the
increasing the applied voltage.

Local isolation was obtained from cyanobacteria fixing atmospheric nitrogen, and isolated
from the local environment of the city of Mosul (Tigris River forest area). This isolation was grown
laboratory in the medium of Chu10. As for the change of wavelengths of light, the red light results
showed that the best wavelength of light was (620-750)nm, the biomass is (770) mg /L, the protein
content is (230) g /ml, while the nitrogen content is (119) mg /L. Also I studied a number of
mineral elements that affected on growth and nitrogen content, and it was found that the best
concentration of potassium phosphate K2HPO4 is (50) mg/L, as recorded the biomass is (802) mg/ L,
the protein content is (202) g / ml, and the nitrogen content is (107) mg /L. When adding different
concentrations of Ca(No3)2 to the medium and comparing them without adding this material to the
medium, the best concentration was (60) mg/ L, the biomass is (790) mg/L, the protein content is
(138) g / ml, and the nitrogen content is (74) mg / L.

Three types of oxadiazle and traizole monomers were prepared. The monomers are polymerized with
different monomers to prepare eight different polymers. The polymers are differs in the type of bonding
unit. The prepared polymers are identified by using infrared spectroscopy and elemental analysis. The
prepared polymers are doped with different ratios of iodine and protonic acid (HCl). The electrical
conductivity of the pure and doped polymers was measured. Many different factors can effect on the
conductivity of the polymers. The long flexible aliphatic moiety in the back bone of the polymer
increase the electrical conductivity, while the presence of long aliphatic arm grafted as aside chain will
decrease the conductivity. Also the type of the bonding group (amide or azomethin ) have a significant
effect on the electrical conductivity. The study proved that the oxadiazole and triazole rings can
participating in the conjugation of polymeric chain and enhanced the electrical conductivity. The
nitrogen and oxygen atoms within the ring can participate with conjugation by their lone pair of electron
and can be considered as a sites for doping. The electrical conductivity of the prepared polymers
increased by increasing the ratio of the dopant but to limited percent. It was proved that the nitrogen
atoms is more ready to protonated by acid than the oxygen atom.

The study included the isolation and diagnosis of some Gram positive and Gram negative
bacterial species from the Neonate Intensive Care Unit in Ibn Al-Atheer Teaching hospital for
children from August 2019 to February 2020.A total of 90 swabs were obtained from various sites of
the ICU from Ibn Al-Atheer hospital environment. The swabs were inoculated on culture media
including blood agar, mannitol salt agar and MacConkey agar. The growth showed different bacterial
colonies which had been tested for their morphological and biochemical characteristics. 80 pure
isolates, 76 of them were Gram positive bacteria, and 4 isolates were Gram negative bacteria. The
highest rate of bacterial contamination was found in the couch and the incubator sites. The most
prevalent bacteria isolated from inanimate surfaces were Staphylococcus aureus, coagulase negative
staphylococci, Bacillus spp. in addition to Diphtheroids, Lactobacillus spp. Streptococcus
pneumoniae, Klebsiella pneumoniae, and E, coli. Antibiotic susceptibility testing for all isolates was
performed using 8 types of commonly used antibiotics in NICU. Taken all together, Gram positive
and Gram negative bacteria showed high resistance against streptomycin, erythromycin, and
ampicillin respectively. Notably, resistance to ampicillin and gentamicin were commonly
demonstrated to be given as the first line of treatment in NICUs

Silver nanoparticles in this study were prepared using the method of laser ablation in liquids (PLAL)
at two energies (540 and 700) mJ and the count of pulses were (100,200,300 and 400) pulse . The
prepared samples were divided into three groups: the first group of the samples were kept as they are
without any irradiation but the second and third group were irradiated by Co-60 source with two
amount of doses (7.5 and 11) KGy respectively . A series of measurements and studies were done ,
and from the pictures of Transmitted Electron Microscope (TEM) , it was observed that the prepared
nanoparticles at laser energy (540) mJ with pulses count (400) pulse were spherical but the prepared
nanoparticles at laser (700) mJ with pulses cont (400) pulse were nano rods shape. The gamma
irradiation effect was studied through its effect on the optical properties of the nanoparticles at
different preparation conditions , represented by a change in the pulses and the energy of the laser
used. The results showed that there was an increase the absorbance peaks when increasing the
irradiated dose. The (TEM) image showed we get spherical nanoparticles in shape and nano
composition. The average diameter of the prepared silver nanoparticles at (540) mJ laser energy in
the range of (30-40) nm.

In this paper, Solid State Nuclear Detector (SSNTD) CR-39 was broken into many fragments with
areas of (1x1) cm2
. The samples were irradiated using 241Am source. The measurements were taken
at normal incident angle of the alpha particles for energies (3.17, 3.59 and 4.13) MeV respectively.
The samples were etched using sodium hydroxide solution (NaOH 6N, 70±1 oC) for time interval of
0.25 h. The optical microscope provided with digital camera was used to preview the track profile
formed in CR-39. This allowed measurement of the track length and in turn the track length as a
function of the etching time . The track growth rate, track etch rate and track rate ratio were also
investigated as a function of many parameters such as etching time, track depth and residual range.
The study showed a good consistency among the investigated parameters . The curves of the track
etch rate and track etch ratio manifested a consistency with Brack curve who interested in studying
the linear energy loss in materials where the maximum energy loss occurs at the end of the alpha
particle range

Mathematical models, usually implemented in computer programs known as computer models, are
widely used in all areas of science and technology to represent complex systems in the real world.
However, computer models are often so complex in such that they require a long time in computer to
be implemented. To solve this problem, a methodology has been developed that is based on building a
statistical representation of a computer model, known as a Gaussian process model. As any statistical
model, the Gaussian process model is based on some assumptions. Several validation methods have
been used for checking the assumptions of the Gaussian process model to obtain the best probabilistic
model as an alternative to the computer model. These validation methods are based on a comparison
between the output of the computer model and the output of the Gaussian process model for some test
data. In this work, we present the Bayesian approach for constructing a Gaussian process model. We
also suggeste and compare validation methods that consider the correlation between the output of the
computer model and the Gaussian process model predictions with those that do not consider the
correlation between these data. We apply the Gaussian process model with the suggested validation
methods to real data represented by the robot arm function. We have found that the methods that
consider the correlation give more accurate and reliable results. We achieved the calculations using the
R program.

In this research tight-binding method has been applied to calculate the band structure in ZnSe crystal,
the matrix elements of have been calculated using the method used by Vogl and Cohen. A computer
program has been designed in MATLAB language to calculate the band structure in the ZnSe crystal,
a sample of points has been formed in the first Brillouin zone (reduced zone) between the high
symmetry points (???? → Γ, Γ → ???? → (????,????) → Γ) . The energy eigen values is calculated along the high
symmetry paths, the obtained results have been compared with previous works of Vogl and Cohen
which shows a good agreements. A comparison between the ZnSe band structure based on sp3
and
sp3
s* models has been done and the energy gap between the conduction and valence bands at the high
symmetry points is calculated for the sp3
s*. The effect of pressure on the ZnSe band structure is
calculated in the range (10-40) Gpa by calculating the matrix element under different pressure, the
results show broadening in band gap due to applied pressure, the conduction band is shifted toward
the high energy while the valence band is shifted toward the lower energy. The band gap is calculated
values for high symmetric points were determined with pressure change and compared with theoretical
calculations.

In this study, the energy of the first exited 21
+ of the rations and ????(81
+)
????(21
+)
,
????(61
+)
????(21
+)
,
????(41
+)
????(21
+)
for 158-170DY
even-even isotopes are compared with the standard values for the three limits, the vibration U(5),
gamma-soft O(6) and the rotational SU(3). The back-bending curve and the relation between E/ I as
a function of I ( E-GOS) and the ratio ????(????1
+
)/????(21
+
) as a function of spin (I) once and with neutron
number again are drawn for these isotopes to have more information about their properties.
Calculation of the energy of different states along the yrast region has been done using the standard
relations for each limit, U(5), O(6) and SU(3) and a comparison with the experimental data show that
they the isotopes 158-170DY possess rotational properties .
The interacting boson model IBM-1 has been used to calculate the energy of different states along
the yrast region applying a suitable limit for each isotopes. A program with MATLAB 10 has been
built for this purpose. Agood agreement with the experimental data was obtained.

The IP Multimedia Subsystem (IMS) has the major architectural framework to be involved in the Next
Generation Network. IMS works to bridge multimedia communication among a variety of applications
over the Internet. IMS bears its multimedia signals and streams through different means of transport
protocols; TCP, UDP, and SCTP. TCP is a connection-oriented protocol that provides reliable data
delivery and congestion control. To setup connection with TCP, IMS entities require extra operations to
be completed, and those operation processes called (worker process) cost the multimedia server extra
overload and delay. This paper investigates the indirect impacts of TCP connections that result from the
Call Session Control Function (CSCF) servers when dealing with video communication using a local
network setup with wired connection. Two parameters are evaluated in the experiment: CPU usage and
response time, in two different scenarios. The experimental results show that the outbound scenario
performs better than the inbound scenario due to the extra operations required to setup new TCP
connection for the inbound.