Millisecond pulsars (MSPs) type have properties differs from normal pulsars type. In this research the characteristic age are concentrated depends on the periods (P), and period derivative (P`) for a sample stars which adopted. Also the value of characteristic age for these stars is determined by depending on the (Ostriker and Gunn) model. The relation between luminosity and the characteristic age for a sample of MSPs stars are illustrated depending on pulse periods for these stars. The results indicate that the spin down torque must decay with the characteristic age for a sample stars which adopted. Also the results for these stars at distance 1.5 kpc from the galactic disk illustrated that the decay must due to the main energy loss mec

In this paper sufficient conditions for oscillation of bounded and all solutions of
linear third order neutral delay differential equation are studied. Examples are
inserted to illustrate the obtained results

Virus is a program which is able to replicate with little or no user intervention,
and the replicated program(s) are able to replicate further. Writing a good virus is
challenging, the best viruses are written in C language, and building as executable
file from C source code to plant virus code into another executable. The result either
prohibitively large, or very dependent on the completeness of the target installation.
Real viruses approach the problem from the other end. They are aggressively
optimized for code size and do only what's absolutely necessary. However, this has
some limitations and the solution to these limitations is complicated and makes the
virus more likely to fail. This paper

The present work includes the synthesis of different Schiff bases by the reaction of aniline with benzaldehyde and its derivatives. These Schiff bases reacted with phenoxy acid chloride to yield acetanilide derivatives. The synthesis of barbituric acid derivatives has been performed by the reaction of phenoxyacetanilide derivatives with guanidine carbonate and diethyl malonate (DEM) derivatives. Elemental analysis and FT-IR spectroscopy were used to characterize the prepared compounds.
The antibacterial activity of the products were studied in vitro using disc diffusion method against two pathogenic strains of bacteria (Pseudomonas aeuroginosa and Staphylococcus aureus) and showed high activity against both types.

The mixed spin-3/2 and spin-5/2 Ising ferrimagnetic system with different
anisotropies has been investigated using the mean field approximation (MFA) .The
phase diagram of the system has also been discussed in the anisotropy dependence
of transition temperature. It is found that a reentrant ferrimagnetic phenomenon in
the ordered system depends strongly on the anisotropy of the mixture.

Four N-substituted maleisoimides were prepared via dehydration of the corresponding maleamic acids usingNN,- dicyclohexylcarbodiimide as dehydrating agent. The prepared maleisoimides were introduced in free radical copolymerization with three selected vinylic monomers including acrylonitrile, methylmethacrylate and methylacrylate producing new copolymers having different physical properties. Moreover three maleisoimide homopolymers were prepared via free radical polymerization of N-substituted maleamic acids followed by their dehydration with ethyl chloroformate/Et3N.
The new homopolymers and copolymers are of great importance since it contain isoimide ring in their repeating units which rearrange gradually with time and use to t

Eight food materials were used. They affected differently the biology of this
beetle. Females laid highest number of eggs when fed on raw wool (٤٥ eggs), then
on goats hair (٤٠.٤ eggs) lowest number of eggs (١٧.٢) when fed on natural silk, and
(١٨ eggs) on sheep hide.
Larval duration was shortest on raw wool (٧٨.٤ days), then goats hair (٨٤.٨ days)
and camels hair (٩١.٨ days). It was largest on human hair (١٧٦ days) and natural silk
(١٧٣ days). Larval mortality was lowest on goat’s hair (١%) then on raw wool (٤%)
and highest on natural silk (١٦%) and human hair (١٢%). Other material lies between them. These materials affected variably pupal duration, adult emergence.

The present study was conducted to detect the susceptibility of six microorganisms isolated from patients suffering from urinary tract and wound infections against native honey, by the agar-well diffusion method. These isolates included: Pseudomonas sp., Klebseiila sp., Escherichia coli, Proteus sp., Staphylococcus aureus and Candida albicans. The results showed that the bacteria isolates were resistant against most of the antibiotics uesd. Two isolates were sensitive to Amikacin and Co- trimoxazole, while all isolates were resistant to Gintamycin and Cephotaxime. In contrast, honey at 5% concentration was able to inhibit the growth of most microorganisms tested, with the exception of only Pseudomonas sp., which was inhibited at concentr

The 2001 outburst of WZ Sagittae has shown the most compelling evidence yet for an enhancement of the mass transfer rate from the donor star during a dwarf nova outburst in the form of hot-spot brightening. It has been shown that even in this extreme case, the brightening can be attributed to tidal heating near the interaction point of an accretion stream with the expanding edge of an eccentric accretion disc, with no need at all for an increase in the mass transfer rate. Furthermore, it has been confirmed previous suggestions that an increase in mass transfer rate through the stream damps any eccentricity in an accretion disc and suppresses the appearance of super-humps, in contradiction to observations. Tidal heating is expected to be

The parametric programming considered as type of sensitivity analysis. This
paper is concern on the study the effect of the variations objective function
coefficients on the optimal solution. Of the parameter value (-5 ≤ θ ≤ 50) is taken the
result, of the objective function equal zero and the decision variables are non basic,
when the parameter (θ = -5).The objective function have value maximum when the
parameter (θ= 50) and the decision variables are become basic. Whenever the
parameter value increase, the objective function value increase too.

The Shalair Metamorphic Rock Group (SMRG) is northern exposure of variety lithological units in Iraq, and forms part of the western margin of the active Iranian plate. The SMRG consists of metasedimentary sequences, whereas the Katar Rash Volcanic Group (KRVG) consists of basic to acidic metaigneous rocks. The petrological and geochemical studies showed that the SMRG is characterized by three lithological units, these are metapelite, metacarbonate, metaarenite, and KRVG is characterized by metaigneous series including metabasalt, metaandesite, and metarhyolitic dacite. All these rocks are regionally metamorphosed into low grade metamorphism of green schist facies – chlorite zone. Thermal conditions of metamorphism are suggested about 3

Entamoeba histolytica was isolated from bloody mucoid stools of patients with amebic dysentery and cultivated on Lock-egg medium to which human serum was added. The parasites were maintained in culture for two weeks during which separate subcultures were prepared.
The effect of a water extract and of an alcoholic extract of seeds of Peganum harmala and leaves of Artemisia herba-alba on the viability of E. histolytica was tested. The effect of a combination of the water extracts and of the alcoholic extracts of both plants on amebic viability was also tested at concentrations of 1000 mg / ml and at 1500 mg / ml for two hours. The results showed a marked effect of both combinations of water extracts and of alcoholic extracts on viabil

     In this work, plasma parameters such as electron density (n_e), electron temperature (T_e), Debye length (λ_D), plasma frequency (f_Plasma), and Debye number (N_D) for Cu plasma produced by Pin-Plate DC discharge were studied. Spectroscopic technique was used to analyze and determine spectral emission lines. The value of the electron density for Cu was in the range (1.5–3.5)×10¹⁸cm^-3 and for the electron temperature was in the range ( 1.31 – 1.61)eV. Finally, plasma parameters of Cu were caculated through plasma produced by Pin-Plate DC discharge using different voltages (600-900) V.

     Pure and iron-doped cadmium oxide ((CdO)_1-xFe_x) thin films at different ratios were prepared using  pulsed laser deposition technique. The X-ray diffraction showed a polycrystalline structure for all samples associated with cubic CdO structure. Another phase appeared at the highest ratio corresponding to the cubic Fe phase. Crystallinity was enhanced and crystalline size increased with increasing Fe ratio. AFM measurements showed that increase of  Fe ratio led to an increase in the average particle diameter. In addition, the distribution of particle size became wide and of irregular behaviour, as well as increasing of the average roughness and the root-mean-square roughness. Increasing the Fe ratio caused

     In this research, the geotechnical properties of soil for modern residential complexes in the city of Tikrit-Iraq were determined using six samples represented by three residential complexes (Bety, Yarmouk and Jawhara) and that these complexes built on gypsum soils suffer in the future from several engineering problems that appear in the form of cracks, inclination or subsidence in The buildings or the collapse of the facilities, the dilution of the roads and the breaking of the water and sewage networks due to the melting of the gypsum in the soil. One of the most important objectives for the research is that the residential complexes for the research area in Tikrit are not older than some years. With the urban expansion that a

    The last two decades have seen a marked increase in the illegal activities on the Dark Web. Prompt evolvement and use of sophisticated protocols make it difficult for security agencies to identify and investigate these activities by conventional methods. Moreover, tracing criminals and terrorists poses a great challenge keeping in mind that cybercrimes are no less serious than real life crimes. At the same time, computer security societies and law enforcement pay a great deal of attention on detecting and monitoring illegal sites on the Dark Web. Retrieval of relevant information is not an easy task because of vastness and ever-changing nature of the Dark Web; as a result, web crawlers play a vital role in achieving this task. The

Tracking moving objects is one of a very important applications within the computer vision. The goal of object tracking is segmenting a region of interest from a video scene and keeping track of its motion and positioning. Track moving objects used in many applications such as video surveillance, robot vision, and traffic monitoring, and animation. In this paper a four-wheeled robotic system have been designed and implemented by using Arduino-Uno microcontroller. Also a useful algorithms have been developed to detect and track objects in real time. The main proposed algorithm based on the kernel based color algorithm and some geometric properties to tracking color object. Robotic system is a compromise of two principal parts which are th

This article addresses a new numerical method to find a numerical solution of the linear delay differential equation of fractional order , the fractional derivatives described in the Caputo sense. The new approach is to approximating second and third derivatives. A backward finite difference method is used. Besides, the composite Trapezoidal rule is used in the Caputo definition to match the integral term. The accuracy and convergence of the prescribed technique are explained. The results  are shown through numerical examples.

    Mixed spinel Mg_1-xZn_xFe₂O₄ ferrites (where x = 0, 0.2, 0.4, and 0.6) nanoparticles were synthesized by using microwave-assisted combustion route. As-synthesized powdered samples were checked by XRD analysis, field emission-scanning electron microscopy, and vibration sample magnetometer to investigate the structural,   morphology, and magnetic properties, respectively. XRD results exhibited that the crystallite size increases with the decrease of Zn⁺² ion concentration for series of mixed spinel Mg_1-xZn_xFe₂O₄ ferrite expect x=0.2. All the mixed spinel Mg_1-xZn_xFe₂O₄ ferrite has different gr

As usage of internet grows in different applications around the world, many techniques were developed to guard an important data against from illegal access and modification from unauthorized users by embedding this data into visual media called host media. Audio hiding in an image is a challenge because of the large size of the audio signal. Some previous methods have been presented to reduce the data of the audio signal before embedding it in the cover image, however, these methods was at the cost of reducing the quality of the audio signal. In this paper, a Slantlet transform (SLT) based method is applied to obtain better performance in terms of audio quality. In addition, the data hiding scheme in the cover color image has been imple

In this work, ugzri images of NGC 4425 galaxy are analyzed. The galaxy images are obtained from the seventh Sloan Digital Sky Survey (SDSS) Data Release (DR7). This work was performed with Image Reduction and Analysis Facility (IRAF) and analyzed the structure of the galaxy a bulge, a bar, together with isophotal contour maps and performed a bulge/disk decomposition of the galaxy image. Also, we have estimated the disk position angle, ellipticity, B4 and inclination of the galaxy.

The structural of peculiar spiral galaxy NGC 2608 have been studied using multiband CCD surface photometry of the observations that have been obtained by the 1.88 m optical telescope of Kottamia Astronomical Observatory (Egypt). We studied the structure and radial brightness distribution of the galaxy. The surface brightness distribution indicate that the center of the galaxy consist of two nucleus. The photometric parameters of its components and the color distribution over the galactic are estimated and stellar populations in different regions of the galaxy are analyzed using color diagram. The distributions of the color indices show that the observed photometric symmetry in the inner part of the galaxy, including the bar, is due to a

     In this paper, the structure of  and  have  been introduced and studied. We also obtain that a is  of a  if and only if there exists an  on such that . In addition, we obtain  that  of if and only if there is an   on  such that  , where  are subspaces of  with eigenvalues 1 and  −1, respectively. We also find  t that the existence of  on  implies that there exists a compatible  under appropriate condition.

     In this paper, the botnet detection problem is defined as a feature selection problem and the genetic algorithm (GA) is used to search for the best significant combination of features from the entire search space of set of features. Furthermore, the Decision Tree (DT) classifier is used as an objective function to direct the ability of the proposed GA to locate the combination of features that can correctly classify the activities into normal traffics and botnet attacks. Two datasets  namely the UNSW-NB15 and the Canadian Institute for Cybersecurity Intrusion Detection System 2017 (CICIDS2017), are used as evaluation datasets. The results reveal that the proposed DT-aware GA can effectively find the relevant

This hydrochemical study of the surface and groundwater in Khan AL-Baghdadi  area, western Iraq,  included the interpretation of physical, chemical, and biological properties. Water samples were collected from wells (14 samples) and surface water of Euphrates River (6 samples) for the dry and wet periods of October 2018 and April 2019, respectively. The stable isotopes analysis was performed for the dry period only. The surface water samples were characterized by slightly alkaline, fresh, excessively mineralized, Ca-chloride type, and hard to very hard water class. While the groundwater samples were characterized by slightly alkaline, brackish, excessively mineralized, Ca-chloride and Na-Chloride type, and hard to very hard wat

Foodborne diseases are a major risk for human health. Millions of people become sick as a result of eating contaminated food with microorganisms that cause diseases. S.  aureus is considered as one of the most important pathogenic bacteria, having the ability to  activate certain genes that encode for heat stable enterotoxins and cause Staphylococcal food poisoning. Thus, this study aimed to determine the prevalence of multi resistant Staphylococcus aureus that produce enterotoxins in different sources of food . Forty nine isolates were identified as S.aureus, according to morphological and biochemical tests. They were isolated from 387 different food samples from several randomly covered restaurants

     The Yamama Formation includes important carbonates reservoir that belongs to the Lower Cretaceous sequence in Southern Iraq. This study covers two oil fields (Sindbad and Siba) that are distributed Southeastern Basrah Governorate, South of Iraq. Yamama reservoir units were determined based on the study of cores, well logs, and petrographic examination of thin sections that required a detailed integration of geological data and petrophysical properties. These parameters were integrated in order to divide the Yamama Formation into six reservoir units (YA0, YA1, YA2, YB1, YB2 and YC), located between five cap rock units. The best facies association and petrophysical properties were found in the shoal environment, wh

     Recent developments in technology and the area of digital communications have rendered digital images increasingly susceptible to tampering and alteration by persons who are not authorized to do so. This may appear to be acceptable, especially if an image editing process is necessary to delete or add a particular scene that improves the quality the image. But what about images used in authorized governmental transactions? The consequences can be severe; any altered document is considered forged under the law and may cause confusion. Also, any document that cannot be verified as being authentic is regarded as a fake and cannot be used, inflicting harm on people. The suggested work intends to reduce fraud in electronic documents u

     This study was conducted to use the local Ephedra alata plant as a model for extracting and detecting alkaloids in the stem of plant (alkaloids-rich extract and crude extract). Different extraction procedures were adopted for qualitative as well as the quantitative examination of the alkaloid extracts, as well as plant crude extract, the best methods for the extraction of the plant materials were applied. Simple, fast and accurate methods like TLC (thin layer chromatography) and HPLC (High-performance liquid chromatography), were used for the identification of the alkaloids (ephedrine) in different extracts of stems E. alata stems. Ephedrine alkaloid was detected in each alkaloids-rich and crude extrac

     Link failure refers to the failure between two connections/nodes in a perfectly working simulation scenario at a particular instance. Transport layer routing protocols form an important basis of setting up a simulation, with Transmission Control Protocol and User Datagram Protocol being the primary of them. The research makes use of Network Simulator v2.35 to conduct different simulation experiments for link failure and provide validation results. In this paper, both protocols, TCP and UDP are compared based on the throughput of packets delivered from one node to the other constrained to the condition that for a certain interval of time the link fails and the simulation time remains the same for either of the protocols. Overall,