ت |
اسم البحث |
اسم الباحث / الباحثين |
اسم المجلة |
المجلد |
العدد |
رقم الصفحة |
Impact factor |
Abstract |
1 |
Synthesis, inhibition
effects and quantum chemical studies of a novel coumarin
derivative on the
corrosion of mild steel in a hydrochloric acid solution |
Ayad Z. Mohamed
Khalida F. Al‑Azawi1
Shaimaa B. Al‑Baghdadi |
Chemistry Central Journal |
10 |
23 |
|
2.55 |
The acid corrosion inhibition process of
mild steel in 1 M HCl by 4-[(2-amino-1, 3,
4-thiadiazol-5-yl) methoxy]coumarin (ATC), has been
investigated using weight loss technique and scanning
electron microscopy SEM). ATC was synthesized, and its
chemical structure was elucidated and confirmed using
spectroscopic techniques |
2 |
Improvement of the Fatigue Resistance and Increase Its Life
of Specimens of Naval Brass Alloy Using Laser Shock Wave
Processing |
د.عبدالهادي كاظم |
Journal of Nanoscience and Technology |
1 |
2 |
69–72 |
1.556 |
Laser
shock processing (LSP) was performed on naval brass alloy
specimen to reveal effectiveness on fatigue life. LSP
experimental array was performed as follows: A convergent
lens was used to deliver 0.5-1 J/pulse (1064 nm). In a 10
ns, laser FWHM pulse produced by Q-switched Nd:YAG laser of
6 Hz with spots of 0.5-2 mm in diameter moving forward along
the work piece with pulse density of 500 pulses/cm2.
Deionized water (3 mm thickness) was used as a transparent
confining layer while the non-prate black paint (20 μm
thickness) was used as an absorbing layer of laser beam. The
optimum values of 1mm spot size, pulse energy of 1 J. LSP
effective parameters, microstructure and fatigue life test
were evaluated. Chemical composition analysis was conducted.
The microstructure analysis included surface morphology by
SEM, grain analysis by AFM. The results demonstrated that
the LSP can be improving fatigue resistance for specimens
which were used in this work by comparing with the untreated
specimens. The fatigue life’s of the specimens after LSP was
obviously increased by 64% at lower stress level due to the
compressive residual stresses near the surface |
3 |
Enhancement of Solar Cell Performance Based On Porous
Silicon |
د.عبدالهادي كاظم |
Journal of Nanoscience and Technology |
2 |
2 |
73-75 |
1.556 |
Recently,
nanometer size semiconductors have been a topic of great
interest. Chemical etching of silicon produce P-Si layers
have a strong link between the details of processing and the
optical and electronic properties of the resulting
structure. This paper focuses on investigation the affecting
of etching time on the, etching rate, electrical properties
of Psi layer and photovoltaic properties of PSi/Si solar
cell. Good photovoltaic (PV) properties (the fill factor
(FF) 0.77, η 28%) was obtain with 80 seconds etching time |
4 |
Design and Evaluation of Immersed Wideband Non-polarizing
Beam Splitter Using ZEMAX Program and Needle/ Tunneling
Method |
Ali H. Al-Hamdani
Hayfa G. Rashid
Hussein T. Hashim |
International Journal of Scientific & Engineering Research |
4 |
7 |
|
3.8 |
Herein a wideband
non-polarizing cube beams splitters (NPBSs) for the
telecommunication C-band. We engage analy-sis/simulation and
design/optimization methods, using an optical design
software ZEMAX-EE and Needle/Tunneling synthesis method to
find optimal beam splitter parameters. Similar design
parameters of minimum layers with ternary dielectric
materials were introduced. The results show that ZEMAX
software has the ability to design thin film non-polarizing
beam splitters and in comparison to needle/tunneling method
has reasonable result. Moreover, NPBSs are provided
exhibiting ~ 50/50 beam ratio with reasonably tolerant
deviations in angle of incidence.
|
5 |
Enhancing a Trombe wall charging and discharging processes
by adding nano-Al2O3 to phase change materials |
Miqdam T Chaichan
Ali H. Al-Hamdani
Adeeb M Kasem |
international journal of science and Engineering research, |
3 |
7 |
|
3.8 |
In
this study, two Trombe walls were designed and fabricated to
evaluate the effect of enhancing the paraffin wax thermal
conductivi-ty on the charging and discharging period of the
wall. The nano Al2O3 was added to the paraffin wax of one
wall. The study results revealed a faster charging and
discharging times due to the improvement in the thermal
conductivity of the wall with wax mixed with nano-material.
The wall, which uses wax with nano, had higher temperatures
and faster charging period than the wall with wax only. The
exit air of this wall is hotter that of the other case.
Given high thermal conductivity of the wax with nano-material
(case 2), the loss of storage energy was faster, depending
on the en-tering outside air temperature and its mass flow
rate. The Trombe wall with nano-materials and wax had
overall higher temperatures up to 29.08% compared to wax
alone. At discharge period, the paraffin wax with nano-material
temperatures was higher than that for the wax alone case up
to 42.68%. The exit air temperatures from a Trombe wall with
the nano-wax compound was higher by about 43.24% compared to
the air exited from the other wall with wax only.
|
6 |
Theoretical Studies on Electrophilic Aromatic |
Hasan R. Obayes
Khalida F. Al.Azawi
Ali H. Al-Hamadani |
ORIENTAL JOURNAL OF CHEMISTRY |
1 |
32 |
|
0.479 |
Theoretical investigations of organic molecules for the
objective of their structural stability are the most
important techniques in this regards. Recently calculations
and simulation reactions utilizing theoretical studies
become attractive conventional method for the researchers.
Density function theory (DFT) method was used to study the
reaction of 8-hydroxyquinoline with 4-ethoxycarbonyl-benzene
diazonium chloride as electrophilic aromatic
substitution reaction. To study any reaction there are two
explanations: first explanation depends on the reactant
molecules and second explanation depends on the stability of
the product molecules. Determine the stability of the
molecule by comparing the energies (total energy, energy
level of (HOMO), and energy gap), we have three stable
molecules, are: HQ-7-YBAEE (II) for the total energy,
HQ-6-YBAEE (II) for the energy level of (HOMO) and
HQ-2-YBAEE (II) for the energy gap. The molecule HQ-4-YBAEE
(II) is always at least stability in all data. |
7 |
Design and Evaluation of C-Band Non-Polarizing Beam
Splitter Plate using ZEMAX |
Ali H. Al-Hamadani
Hayfa G. Rashid
Hussein T. Hashim |
Wulfenia |
2 |
23 |
|
0.267 |
With the aid ZEMAX-EE software, a strategy
for designing C-band nonpolarizing neutral plate beam
splitter is presented. The design construction was based on
a certain optical properties of homogeneous, isotropic three
dielectric materials TiO 2,
Al2O3
and SiO2
chosen as "High", "
Medium" and "Low" index material,
respectively depositing on the BK-7 glass
substrate. Result shows that the optimum
design consists of 17- layers and can be
applied to a wide range of angles and
reflectance values. |
8 |
Effect of angle of orientation of flat mirror concentrator
on solar panel system output |
Ali H. Al-Hamadani
Faten Sh. Zain Al-Abdin
Jiinnan H. Ali |
IOSR Journal of Computer Engineering |
1 |
18 |
|
1.213 |
In this research two flat
glass mirrors is used as concentrator of solar panel system.
The mirrors increase's the concentration of sun light ray on
the solar module. Anew model of solar panel system is
designed by mean of software Zemax in order to find best
possible inclination angle of the concentrator that improves
the performance of the solar panel. So the efficiency is
59.5% for designed system with inclination angle 60° of the
concentrator. Then a practical design for the solar panel
system with concentrators is established. The outdoor
measurements for the practical design indicated that the
output power and efficiency is increasing by increasing the
inclination angle of the concentrator and reaches its
maximum value at 60o
at different times of the date 5-2-2014. Also
the results showed that the maximum value of efficiency is
0.85 at 11 o'clock at 60o.
While the maximum value of the output power is 72.8w at 12
o'clock of the same day. |
9 |
Enhancement of solar cell performance based on porous
silicon |
Ali H. Al-Hamadani
M. Qasim
K.S. Rida |
Journal of Nanoscience and Technology |
2 |
2 |
|
1.556 |
Recently, nanometer size semiconductors have
been a topic of great interest. Chemical etching of silicon
produce P-Si layers have a strong link between the details
of processing and the optical and electronic properties of
the resulting structure. This paper focuses on investigation
the affecting of etching time on the, etching rate,
electrical properties of Psi layer and photovoltaic
properties of PSi/Si solar cell. Good photovoltaic (PV)
properties (the fill factor (FF) 0.77, η 28%) was obtain
with 80 seconds etching time. |
10 |
synthesis of aluminum and titanium oxides nanoparticles via
sol-gel method: optimization for the minimum size |
احمد عبد الامير حسين
كاظم عبد حبيتر |
Journal of Nanoscience and Technology |
2 |
1 |
37-39 |
1.556 |
Al2O3 and TiO2 nanoparticles were synthesized using sol-gel
method. The structures of Al2O3 and TiO2 nanoparticles were
investigated using X-ray diffraction (XRD) study. The
morphology of nanoparticles was investigated by scanning
electron microscopy (SEM) analysis. The FE-SEM images showed
that most of the nanoparticles obtained for Al2O3 and TiO2
nanoparticles have spherical shape with a particle size of
14 nm and 43 nm for Al2O3 and TiO2 nanoparticles
respectively. The absorption spectra of Al2O3 and TiO2
nanoparticles suspended in deionized water were recorded at
room temperature using UV-visible spectroscopy. The
absorption spectra show a strong peak at 344 nm and 483 nm
for Al2O3 and TiO2 respectively. The results on absorption
spectra are in good agreement with those investigated by XRD
which confirmed the formation of Al2O3 and TiO2 |
11 |
ultraviolet photodetector based on TIO2
nanopracticles/porous siliconhetrojunction |
عدي نايف محسن
زهراء جميل
كاظم عبد حبيتر |
optik |
|
127 |
2806-2810 |
0.742 |
TiO2nanoparticles (TiO2NPs) were deposited on porous silicon
(PS) by drop casting technique afterprepared TiO2NPs by
pulsed laser ablation in liquid (PLAL) and PS by
photoelectrochemical etching(PECE). The structural and
morphological measurements were investigated the formation
anatase phaseTiO2NPs with size of 17–101 nm and mesoporous
silicon at 14.18 nm average pore diameter. Reflectivityof PS
was decreased after coated with TiO2NPs leading to much
light trap. As a result, successful UVdetector synthesis
with 0.045 A/W resposivity and 1.9 × 1012W−1cm Hz1/2specific
detectivity.
|
13 |
Corrosion Inhibitor for St-37
Alloy by Laser Shock Peening Technique |
اياد زوين
محمد
عبد الهادي كاظم جدران
ورود مهند
شاكر |
Journal of Advanced
electrochemistry |
2 |
1 |
59-56 |
|
This
study aims to reduce the corrosion that occurring in mild
steel (st-37). Laser has been used as inhibitor to reduce
corrosion rate by using Laser shock peening (LSP) technique
for st-37 submerged in hydrochloric acid with concentration
of 1 M and the immersion time of 30 minutes at room
temperature. The corrosion rate was evaluated by two method;
weight loss method and polarization method. The results were
observed that the values of corrosion rate are decreased
after using the laser shock peening from 7.7210 mm/y to
1.0716 mm/y |
14 |
Design High Efficient
Reflectivity of DBR |
حيدر توران مهدي
علي حميد عبد الهادي
وائل ياس ناصر |
المجلة العراقية لليزر |
|
|
|
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Bragg mirrors consisting of stacks of
dielectric layers with an optical thickness of
quarter wavelength, which are greater importance for
optoelectronic device
applications. The reflectivity can be increased by
increasing the layers of the mirror
until get the required value of it, for example for
mirrors with 4 Bragg layers pairs, a
relative refractive index contrast of 0.275 is
necessary to obtain a reflectivity higher
than 99%, whereas with 8 layer pairs for same
refractive index contrast reflectivity of
99.99 % is obtained. The high reflectivity is purely
caused by multiple-interferences
effects. The best thickness calculated is InAs/InSb with
2.7749e-07 m pair alternating pair and 99% of reflectance.
It can be analysis by using different matrix method such as
transfer matrix method TMM) which is simplest method for
study the characteristic of devices with different
alternating layers.
|
15 |
Preparation of Nanophotonics LiNbO3 thin films and studying
their morphological and structural properties by Sol-Gel
method for waveguide applications |
مكرم عبد المطلب فخري
مروة صباح محسن
ايفان طارق سليم |
International Journal
of Chemical, Molecular, Nuclear, Materials and Metallurgical
Engineering |
10 |
5 |
|
|
Lithium niobate nanostructure was deposited
on N-type Si (100) using spin coating technique, employing
the polymeric precursor method (Pechini process). The
prepared nanostructure was annealed at static air and oxygen
atmosphere performed at 500 oC for 2 h. SEM analysis was
carried out for LiNBO3 nanostructure prepared at different
concentration; 0.25, 0.50, 0.75, 1.00 Mol% . X-ray
diffraction analysis and SEM properties was carried out for
films prepared at different mol concentration
(0.25,0.50,0.75,1.00) Mol%. The results show good
distribution of morphological properties as the
concentration increases and good enhancement in both
structural and surface morphology of the films with
increasing the concentration. |
16 |
Synthesis of Aluminum and Titanium Oxides
Nanoparticles via Sol-Gel Method: Optimization for the
Minimum Size |
احمد عبد الامير حسن
كاظم عبد حبيتر |
Journal of Nanoscience and
Technology |
2 |
1 |
|
|
Al2O3
and TiO2 nanoparticles were synthesized using sol-gel
method. The structures of Al2O3 and TiO2 nanoparticles were
investigated using X-ray diffraction (XRD) study. The
morphology of nanoparticles was investigated by scanning
electron microscopy (SEM) analysis. The FE-SEM images showed
that most of the nanoparticles obtained for Al2O3 and TiO2
nanoparticles have spherical shape with a particle size of
14 nm and 43 nm for Al2O3 and TiO2 nanoparticles
respectively. The absorption spectra of Al2O3 and TiO2
nanoparticles suspended in deionized water were recorded at
room temperature using UV-visible spectroscopy. The
absorption spectra show a strong peak at 344 nm and 483 nm
for Al2O3 and TiO2 respectively. The results on absorption
spectra are in good agreement with those investigated by XRD
which confirmed the formation of Al2O3 and TiO2.
|
17 |
Studying the effect of simultaneous
variation in both of the bias current and feedback strength
on the output dynamics of semiconductor laser with
optoelectronic feedback |
كاظم عبد حبيتر
قيس عبد الستار
حسن غسان عبد |
IJIST |
3 |
2 |
|
|
We report numerically the generation of
spiking in semiconductor laser SL) with an optoelectronic
feedback. The evolution of nonlinear dynamics of
semiconductor lasers with optoelectronic feedback by
changing together two of the control system parameters (i.e.
the variation of the dc bias current of SL and the feedback
strength simultaneously) is investigated. In addition to the
period-doubling scenario to chaos which shows the transition
of nonlinear dynamics from periodic to quasi-periodic, then
to chaotic state and eventually to Mixed-Mode Oscillations (MMOs)
is shown, this paper demonstrated that the optimal selection
of system parameters can eliminate the generated chaos or
exploiting the chaos benefits. |
18 |
Preparation and Characterization Study of
ZnS Thin Films with Different Substrate Temperatures |
كاظم عبد حبيتر |
Engineering and
technology Journal |
34 |
1 |
|
|
Zinc sulfide (ZnS) thin films were deposited
on a glass and n-type Silicon wafer substrates at
temperature range from 50 - 200 C o
using pulsed
laser deposition (PLD) technique. The structural,
morphological, optical and electrical properties of the
films have been investigated. The XRD analyses indicate that
ZnS films have zinc blende structures with plane (111
)preferential orientation, whereas the diffraction patterns
sharpen with the increase in substrate temperatures. The
Atomic Force Microscopy (AFM) Images shows the particle size
and surface roughness of the deposited ZnS thin film at
substrate temperature 50 and 150 Co
were about |
19 |
Effect of cold laser therapy on infected wound healing in
mice |
أ.د فريد فارس |
international journal of science and Engineering research |
7 |
8 |
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3.8 |
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20 |
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