Engineering and Technology Journal

We have investing the effect of annealing treatment of CdO films,
deposited by chemical deposition using successive ionic layer adsorption
and reaction (SILAR) technique , on the film properties . The CdO thin
film were Prepared by using cadmium acetate at concentration (0.03M)
and base solution from ammonium hydroxide solution on glass substrate.
.It's found that the optical, electrical and gas sensing (H2, CO) properties of
the films are effected by the annealing temperature.

Twenty isolates of lactic acid bacteria (LAB) from traditional dairy Indian curd
were tested for sugar fermentation test, strains were preliminarily identified as
Lactococcuslactis sp. lactis by physiological and biochemical test. The
identification by PCR analysis and partial 16S rRNA confirmed that N5 were
100% identical to Lactococcus. lactissp. lactis. The results revealed that only the
bacteriocin produced from strain N5 was shown as being active against mostly
gram positive bacterial indicators. The bacteriocin produced also exhibited a strong
inhibitory effect on the foodborn pathogen, Staphylococcus aureus, which is
mostly reported as the dominant foodborn pathogen in foods. This bacteriocin
producing LAB The bacteriocin has a broad antibacterial spectrum similar to that
of nisin and inhibited several related species of lactic acid bacteria and other Grampositive
bacteria. The inhibitory activity of the bacteriocin was found to be stable
over a wide range of pH and temperature. The molecular weight of the peptide was
judged to be 3.5 kDa by SDS-polyacrylamide gel electrophoresis. These results
indicate that bacteriocin produced by L. lactis sp. lactis N5 is a nisin-like
bacteriocin.

In this paper it was proved that the Cartesian product of two fuzzy normed spaces is
a fuzzy normed space then it was proved that the Cartesian product of two complete
fuzzy normed spaces is again a complete fuzzy normed space

A different concentration of pomegranate peel extract were prepared (0.1, 0.2,
0.3, 0.4 and 0.5mg/ml) and tested their effect on the growth of some pathogenic
microorganisms including (Staphylococcus aureus, Escherichia coli, Proteus
vulgaricus, Candida tropicalis and Candida albicans). The results showed a
significant sensitivity of Staphylococcus aureus, Proteus vulgaricus, Candida
tropicalis and Candida albicans to the concentrations starting from 0.3mg/ml
except E. coli which exhibited significant sensitivity to the concentration
0.2mg/ml. The yeast isolates showed a significant sensitivity to the pomegranate
peel extract start from 0.4mg/ml concentration

Porous silicon (PS) layers are prepared by anodization for different current
densities. The samples are then characterized the nanocrystalline porous silicon layer
by X-Ray Diffraction (XRD), Atomic Force Microscopy (AFM), Fourier Transform
Infrared (FTIR), Reflectivity and Raman. PS layers were formed on a p-type Si wafer.
anodized electrically with a 10 and 40 mA/cm2 current density for fixed 20 min etching
times.
We have estimated crystallites size from X-Ray diffraction about nanoscale for
porous silicon and AFM confirms the nanometric size and therefore optical properties
about nanocrystalline silicon yields a Raman spectrum showing a broadened peak
shifted below 520 cm

In this work, antimicrobial potential of silver nanoparticles synthesized from
extract of Myrtus communis on different pathogenic bacteria and yeast was
investigated. 10 mL of extract was mixed with 90 mL of 2 mM aqueous AgNO3
and heated at 70 °C for 3 min. A change from greenish to dark brown color was
observed. Characterization using UV-VIS spectrophotometery and X- ray
diffraction analysis were performed. The UV-Vis spectral analysis showed silver
surface plasmon resonance band at 425 nm. X- ray diffraction showed that the
particles were crystalline in nature with face centered cubic structure (FCC) of the
bulk silver with broad beaks at 38.50° and 44.76°. Antimicrobial activity against
six microorganisms was tested using well diffusion method. The synthesized silver
nanoparticles efficiently inhibited various pathogenic organisms in a dosedependent
manner was more pronounced against Gram-positive bacteria than
Gram-negative bacteria. The approach of green synthesis seems to be cost
effective, eco-friendly and easy alternative to conventional methods of silver
nanoparticles synthesis. The powerful bioactivity demonstrated by the synthesized
silver nanoparticles leads towards the clinical use as antimicrobial.

In this paper genetic based method proposed for mining association rule, the
benefit of this method it mining association rule in one step and it does not require
the user-specified threshold of minimum support and minimum confidence
deciding suitable threshold values of support and confidence is critical to the
quality of association rule technology. Specific mechanisms for crossover operators
have been designed to extract interesting rules from a transaction database.
The method proposed in this paper is successfully applied to real-world
database. The results demonstrate that the proposed algorithm is a practical method
for mining association rules

Porous silicon (PS) layers has been prepared in this work by electrochemical
etching (ECE) technique of a p-type silicon wafer with resistivity (1.5-4 Ω.cm) in
hydrofluoric (HF) acid of 20% concentration. Various affecting studied etching time
(10, 30, and 45 min) and current density (15 mA/cm2). We have study the
morphological properties (AFM) and the electrical properties (I-V and C-V).
The atomic force microscopy investigation shows the rough silicon surface, with
increasing etching process (etching time) porous structure nucleates which leads to an
increase in the depth and width (diameter) of surface pits. Consequently, the surface
roughness also increases.
The electrical properties of prepared PS; namely current density-voltage
characteristics under dark, show that the pass current through the PS layer decreased
by increasing the etching time, due to increase the resistivity of PS layer. The PS layer
shows a rectifying behaviour with different rectification ratio. C-V measurements
shows that the increase of the etching time decreases the capacitance of the PS layer.
This behavior was attributed to the increasing in the depletion region width which
leading to the increasing of built-in potential.

In this work porous silicon where prepared by chemical etching assisted with
laser. The structural and optical properties of porous silicon are investigated using
atomic force microscopy (AFM) and FTIR spectroscope. FTIR spectrum exhibit
the formation of SiHx (x=1,2) and Si-O bonds. The atomic force microscopy AFM
investigation shows the surface roughness (RMS observed was 1.52nm with laser
and 1. 86 nm without laser ) and pyramid like hillocks surface on entire surface
which can be regarded as a condensation point to form small skeleton clusters
which plays an important role for the strong visible luminescence

The medical ultrasound images are usually corrupted by type of noise called
‘speckle’. This noise is caused by the coherent nature of the scattering
phenomenon. There are many filters used to reduce the effect of speckle noise like
mean, median, Lee, Kaun, Gamma, Weiner, Frost. Recently, One of the most
commonly speckle denoising filter is wavelet filter.
In this paper, A simple hybrid scheme is suggest to denosing the ultrasound
images. this scheme consist from two interacted filter (winner and mean filter) with
window size 3*3 and designed simple adaptive filter(SAF). The adaptation of SAF
depends on nonlinear gain function. In order to test the efficiency of the suggested
scheme, its performance was compared with performance of other filters like mean,
wiener, and wavelet filter

This paper presents the study of characteristic including (mechanical, thermal, and
some dielectric properties) of chestnut shell filler/ epoxy composite. Composite plate
was made by hand-layup technique. The filler content was 5% by weight. The tensile,
impact, hardness, flexural strength and compression were showed to be increased while
Young's modulus was little increased. The dielectric strength, dielectric constant, and
volume resistivity were evaluated. The bending (Young's modulus values) and
hardness tests were also estimated as a function of water submersion time at room
temperature for a period up to 8weeks. The obtained results indicated that the
composite has responded to water absorption.

This paper presents a new method to perform arithmetic addition operation on
numbers in a faster way in comparison with the exist one on computers.
The proposed method builds a new architecture for the Adder Circuit in the
CPU, which does not perform any carry operations. In fact, there is no need for a
waiting time to perform carrying bits from low order positions to high order
positions when adding two numbers.
The new method is successfully tested with many different examples

In this work, we present results of photoluminescence (PL) properties of fully
(p-n) porous silicon device. Porous silicon layer has been prepared by Photoelectrochemical
etching under different etching time of abrupt (p-n) silicon junction.
The photoluminescence spectra, it is found that the formation of fully penetrate porous
silicon layer can lead to decrease in the photoluminescence intensity. The reduction of
the PL intensity is referred to the increase of non- radiative recombination process
between the electron and hole. The obtained fully porous silicon layer in high etching
time regime and this layer cannot be used for perpetration of light emitting devices,
while the partially (p-n) porous silicon layer in the PL intensity has a higher value and
good characteristics, this layer is suitable for (LED).

This research includes the preparation of polymers mixtures consists of resins
(Unsaturated Polyester with Polyurethane) (UP+PU), where the optimal mixing
ratio has been selected on the basis of the best impact strength. It is found that the
mixing ratio with percentage (60% Polyester+40% Polyurethane), where it has
been used to prepare the samples. The mechanical tests have been performed on the
prepared samples; in addition the effect of increasing the temperature (22±2 °C
(R.T.), 35±4°C, 50±4 °C) has been studied on the samples. A four samples where
prepared from the polymers mixtures using the above mentioned mixing ratio by
using the method of hand casting technique; these samples are: polymers mixture
consisting of (UP+PU), added to it the micro cotton powder with weight ratio (2%)
once and for copper by weight ratio (39%) with volumetric fraction of copper (5%)
again, as well as composite material was prepared from the same polymers mixture
adding to it micro cotton powder filling and chips together in the same weight
ratios mentioned earlier. Some mechanical tests were conducted include: (Flexural
strength and Tensile strength). A sample of the four polymers mixtures have been
examined using the Scanning Electron Microscopy (SEM), and study the effect of
adding reinforcement materials, and also study the topography of the surface of
each sample and the knowledge the fine structure for each mixture. Results showed
that the reinforced blends with micro cotton powder and copper (UP+PU+MC+Cu)
possess better mechanical properties of Flexural strength and Tensile strength, also
it has all tests are affected by temperatures

The objective of the present study is to detect the genetic effects of methanolic
extract of Dill plant in morphological phenotypic big sperm abnormalities of male
mice (Mus musculus).Sixty mice were used and divided into three groups by 20 mice
for each group and each group was divided in turn into four groups: the first control
group, while tested the remaining three groups with alcohol extract in concentrations
ranged (0.5, 1, 2) mg/ml within periods (1, 3, 5) week. The results showed the presence
of abnormal change in the form of the heads of sperm in the stages of spermatids
,spermatocytes and spermatogonia where it was observed the presence of significant
differences (P≤ 0.05) in sperm cells and spermatocytes of the sperm when compared
with control while the difference was highly significant (P≤ 0.01) in spermatogonia
and for the three doses in a period of 5 weeks. So we can conclude that doses of dill
extract may permanently sterilize mice