الخلاصة:
ة k تعتبر عملیة تشفیر البیانات الصوتیة من التكنولوجیا المألوفة لخزن ونقل الاشارات الصوتیة. العلامة المائی
ات k اق المعلوم k مح بالح k ذا تس k وتیة وھك k ارات الص k طة الاش k ة بواس k ات المنقول k تعطي القوة في عدم التحسس بوجود البیان
القیمة بالمحتوى مثل اسم المؤلف او الفنان او حقوق الطباعة المتعلقة بالبیانات.
ة k وع موج k ن ن k وتي م k ف ص k ي مل k ص ف k وع ن k ن ن k ة م k ة المائی k اء العلام k نة لاخف k ة محس k ث خوارز

The research aims at:

1. Identifying the problems facing kindergarten teachers.
2. Identifying the nature of the problems facing kindergarten teachers.

To achieve the aim of the research, the researcher prepared a questionnaire to identify the problems that face the teachers of kindergartens. The questionnaire was subjected to the consultation of a group of specialized expertise in the educational and psychological sciences to certify the propriety of the items of the questionnaire and it gained a rate of (80%), and the stability of the scale gained (0.91) and it stands for a correlation parameter with a statistical significance and it was calculated by using Person’s R Corre

KE Sharquie, HR Al-Hamamy, AA Noaimi, KA Ali, Journal of Cosmetics, Dermatological Sciences and Applications, 2015 - Cited by 3

  This century is witnessing changes in various fields,which have become a challenge to the enterprises in the contemporary business environment, the most important of which is the importance of measurement and disclosure of the role of knowledge capital in the transition to the knowledge economy, which is no longer the land and labor and physical capital resources the basic. Knowledge-based capital has emerged that provides the enterprise with an area of ​​excellence and enhances its position to achieve competitive advantage. The research tackled the concept, objectives, components and importance of knowledge capital, which is fundamental in knowledge management, creating value added and enhancing competitiveness, as well as an

This document provides an examination of research, on combining orthogonal frequency division multiplexing (OFDM) and optical fibers in communication networks. With the increasing need for data speeds and efficient use of bandwidth experts have been exploring the connection between OFDM, valued for its ability to handle multipath interference and optimize spectral usage and optical fiber technology which provides superior data transmission capabilities with low signal loss and strong protection, against electromagnetic disturbances. The review summarizes discoveries from studies examining the pros and cons of using OFDM, in optical communication networks. It discusses obstacles like fiber nonlinearity, chromatic dispersion and the effects o

The most important contemporary issues which related to the survey of the influence of communication development technology to land use sustainability. The research aims to explain the changes that happened in the quality & land use activities performance by understanding the transformations due to modern technology and its impact on current uses and its impact on changing functional relationships between those uses to create new combinations or hybrid uses.Research will follow the analytical descriptive approach in presenting the problem of research. Research has several conclusions & recommendations, one of conclusions is the change of the place concept and its relation to changing the concept of land use and its sustai

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Kidney stone disease is a highly significant clinical issue that poses a serious threat to both global health and the economy. For the sustainability of good health and well-being of kidney stone patients, this study aimed to elucidate the role of the enzyme glyoxylate reductase and hydroxypyruvate reductase (GRHPR) in the formation of the kidney stones and their development. There are many different types of kidney stones, but calcium oxalate kidney stones are the most prevalent in Iraq. In this study, 50 Iraqi patients with calcium oxalate stones (25 males and 25 females) were compared to 30 healthy control groups (17 males and 13 females). The biochemical tests for kidney function, such as serum urea, creatinine, and uric acid, were d

The study was conducted to identify the immunomodulatory effect of beta-glucan and to compare its immunomodulatory properties with S.boulardii yeast. In this study, S.boulardii yeast was used to extract beta-glucan. The yeast was activated using a YPD medium, its purity was examined, and the following operations were performed on it: The biomass of S.boulardii yeast was grown in a vibrating incubator. The biomass was isolated, collected, washed, and dried. Extracting beta-glucan using the acid-base method for S.boulardii yeast is considered the best  extraction method. Beta-glucan was partially purified using 4% phosphoric acid. Chemical tests were conducted on it and its functional properties (abilit

     The research is demonstrating the use of an X-ray diffraction pattern obtained experimentally from barium oxide powder. The X-ray diffraction pattern of the barium oxide nanoparticle sample was analyzed through the program to obtain the mean intensity width values and use these values to extract the particle size for all diffraction pattern lines using the Scherrer method. The nanoparticle size was calculated for each barium oxide line. Then the dislocation density was calculated through two mathematical equations, one of which depended on the particle size and the other depended on the integral breadth, a comparison was made between the results of the two dislocation densities and the particle size, where it was found

Mesoporous silica was developed to transport metoprolol tartrate (MPT). The data obtained from the kinetic experiments of adsorption of 15 ppm of MPT drug at 293 K was fitted in the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. The results show that the adsorption process obeys the pseudo-first-order equation and the rate-controlling step, not just the intraparticle diffusion step. The MPT drug load onto mesoporous silica was 15.13 mg/g. The release profile shows that the MPT drug was about 55% released after 40 min when released in water, while in phosphate-buffered saline (PBS) media, the release reached 90% after 60 min at body temperature (37°C). Three kinetic release versions, including first-order, K

This paper presents two important contributions to the field of numerical analysis for third-order ordinary differential equations (ODEs). First, a new class of direct implicit Runge-Kutta (RK) processes, called RKTDIO, is introduced as solutions to third-order ODEs. Secondly, it develops the ERKTDIO method, which is an embedded pairwise diagonal implicit RK method. The study begins by introducing the theory of relevant-colored trees and B-series as fundamental concepts. By utilizing the order constraints, two RKTDIO methods are derived: a fifth-order method with three stages and a sixth-order method with four stages. In addition, an embedded method called ERKTDIO6(5) is derived, which has orders six and five. The derivation of the embed

In the current study, 100 different clinical samples were collected in Baghdad hospitals, including Teaching Laboratories Hospital, Medical City, Baghdad Teaching Hospital, and Martyr Ghazi Hariri Hospital, for a period from May 2022 to September 2022. After diagnosis, we obtained 19 isolates of Pseudomonas aeruginosa from different clinical sources, including burns, wounds, urinary tract infections, otitis media, and blood. Cultured all samples on MacConkey, cetrimide agar. Then it underwent several microscopic and biochemical tests. Included are: Oxidase, Citrate utilization, Triple sugar-iron (TSI), catalase, Gelatinase, Motility and Ornithine decarboxylation tests. Pseudomonas aeruginosa susceptibility to 11 antibio

While transmitting data across a network, it is important to keep in mind that some fields may contain sensitive information. One of the most pressing concerns, then, is the protection of private information. The confidentiality and integrity of an online video are the primary concerns of the suggested approach in this work. Video compression using Moving Picture Experts Group (MPEG), video encryption, and video decryption are the three components that make up the proposed study. The data is encrypted using one of the most used block cipher algorithms, the Advanced Encryption Standard (AES) technique. The real-time needs of frame decoding can be satisfied by a software implementation. Our research leads us to believe that this has the po

This scientific study aims to introduce a new type of topological space, called "Grill v-space", with the aim of contributing to scientific knowledge in this field. New generalizations were developed for both the local function and the Kuratowski closure function in order to generalize their concepts. Subsequently, these generalizations were used to define a new topology based on the concepts associated with the grill and the v -space. The set of v -open in v -space is defined as the sum of the set of v -open forms in v -space when the grill consists of the subsets of P(X) except the

The current study focuses on the surface modification of an air dielectric barrier discharge (DBD) at atmospheric pressure on a polymer (epoxy). Atomic force microscopy (AFM), Hardness and Thermo-gravimetric analysis (TGA), and Differential Scanning Calorimetry (DSC) were used to characterize the material. Plasma was used to expose the epoxy sample for (0, 10, 20, and 30 min). The AFM study shows an increase in the time of plasma treatment and an increase in the parameter of roughening, in which the surface of the material is roughened by the plasma treatment. This plasma-induced morphological modification of the epoxy surface will also contribute to enhancing the wettability. In the DSC test, the stability of the glass transition temper

Rheumatoid arthritis (RA) is a chronic inflammatory disease that primarily affects the synovial joints and produces recurring inflammation of the synovial membrane, which ultimately causes joint degeneration, deformity, and disability. The current study included 110 blood samples collected from patients infected with rheumatoid arthritis (60) and 50 blood samples from controls. The results showed that investigation of some hematological tests revealed a high significant erythrocyte sedimentation rate (ESR) for the patient group compared to the control group (28.25 ± 2.72, 16.24 ± 1.83), respectively. But it is non-significant for patients for (WBC, RBC, and PLT) was (7.34 ± 0.25, 4.71 ± 0.08, and 248.26 ± 9.18), while the control gr

Fifty isolates of Staphylococcus aureus were obtained out of 220 samples collected from clinical sources after a diagnosis of the bacteria, and then a sensitivity test was performed for the isolates, and the minimum inhibitor concentration of 15 antibiotics in the bacterial isolates under study was determined using the Vitek -2 Compact System device. All isolates showed 100% resistance to Benzylpenicillin at (>=0.5-0.12) and the resistance to Oxacillin was 76% at (>= 1-4), Ciprofloxacin and Moxifloxacin was 42, 40% at (>=2-8), Gentamycin (20%) at >=16, Erythromycin by (78%) at >=8, Clindamycin (by 74%) at (>=8-16), Tetracycline by 40% at (>=2-16), Fusidic Acid by (14%) at (>=8-32), and Rifampicin by (6% )

The Tigris River is the primary source of water for human consumption in Iraq and is the ultimate sink for wastewater generated by activities. This research was conducted between November 2021 and September 2022 using 15 physio-chemical parameters (pH, air and water temperature, EC, salinity, DO, BOD, TH, Ca+, Mg+, SO4, TDS, TSS, turbidity, and Chloride), two heavy metal parameters (Cr, and Al), and biological pollutants to analyze temporal and spatial variation and the effects of pollutants sources on the water quality of the Tigris River from the north to the south of Baghdad city. The results show that some values of the tested parameters were higher than Iraqi and WHO standards for the water river, which call for attention to be paid

Proteus mirabilis is considered the third most common cause of catheter-associated urinary tract infections. With urease production, the potency of the catheter’s blockage due to the formation of biofilm is significantly enhanced. This study was aimed at exploring whether green synthesized ZnO-CuO nanoparticles (ZnO-CuO NPs) can function as an anti-biofilm agent produced by P.Mirabilis. The characterization of biosynthesized nanoparticles was carried out to determine the chemical and physical properties of the product using AFM, TEM, FESEM, XRD, and UV visible spectrometry. The hexagonal structure was confirmed by XRD, the size range was marked at 96.00nm by TEM, and FESEM was used to confirm the surface morphology. A

A theoretical study of electronic characteristics based on charge transfer using quantum model N719 dye-sensitized contact with TiO2 in solar cells. The current density expression used to calculate the photovoltaic characteristics is assumed to be a continuum level of the N719 dye and TiO2 semiconductor in the heterojunction N719-TiO2 devices using the MATLAB program. The transition energy, current, fill factor, and efficiency of N719-TiO2 DSSCs are calculated based on quantum transition theory. The performance of DSSCs photovoltaic was estimated based on the I-V characteristics of the N719-TiO2 device using concentrations  at (100 mW/cm²) irradiation. The N719-TiO2 device with Butanol solvent at a concentrati

Moth-eye nano-structure is essentially used as a light-trapping technique for more efficient and cost-effective solar cells. This computational study investigated two dimensions of rectangular silicon base anti-reflected nanostructure for ultra-thin film solar silicon cell efficiency enhancement. The introduced simulation procedure depends on numerical methods and Lumerical software. Impacts of the structure geometry, which was the width and height, on optical and electrical properties were investigated. It found that the geometry of the structure has a significant effect on the absorption and reflection spectrum, due to structure light-trapping effects, and the maximum absorption increases in visible regain reported at a width of 300 nm

Over the past few years, there has been a significant focus on studying the synthesis and applications of metal nanoparticles. These tiny particles possess distinct properties that set them apart from bulk metals. Cr:Se core-shell nano thin film has been pre-coated by plasma jets with different concentrations (10:0, 8:2, and 6:4) and deposition by chemical spray pyrolysis. The nano-thin films were analyzed by X-ray diffraction (XRD), ultraviolet-visible spectroscopy(UV), and transmission electron microscopy TEM. This study looks into the structure and optical features of core-shell nanoparticles made with different ratios of chromium and selenium (Cr:Se). The X-ray diffraction patterns confirm the crystalline nature of the nanoparticles

Pulses are the second most significant economic crop that have been attacked by many storage pests. One of these pests is the cowpea beetle (Callosobruchus maculatus).  This study aims to study the effect of phenol  grape seed (Vitis vinifera) extract (1000,1500,2000,2500and 3500 mg/L) on eggs and adults. The results showed that the alcoholic extract of the grape seed (Vitis vinifera) recorded for the egg hatching was (80, 56.67, 53.33, 40.00 and 10.00%) respectively, Results in the use of nanocapsules at concentrations of 100 and 500 mg/L showed the egg hatching ratio was (53.33, 16.67%) respectively, while the results of alcoholic extracts of grape seed (Vitis vinifera)  recorded for a

In this work, the rate of charge transfer (CT) reaction at the N3-ZnS interface was calculated using a quantitative computational model to evaluate the efficiency of N3-ZnS heterojunction dye-sensitized solar cell devices using different types of solvents. This work discussed the influence of the effective driving energy force on the charge transport rate and performance of N3-ZnS devices with various solvents based on a donor-acceptor model. A solar cell model was used to study the optical efficiency when changing some of its parameters, such as the type of material and the thickness of the film, as they are important factors influencing the quality of the solar cell. It was found that the transition energy varies with different solvent

Undoped and aluminum-doped In2S3 chalcopyrite semiconductor thin films are deposited on glass substrates using the thermal evaporation process under a vacuum of 1.6×10^-5 mbar, achieving a thickness of 500 nm. This study examines the impact of varying Al ratios of 0.0, 0.02 and 0.04 on properties of Al-doped In2S3 thin film. The structural characteristics of In2S3 thin films were studied by X-ray diffraction (XRD) and atomic force microscopy (AFM), revealing that the In2S3 film exhibits a polycrystalline structure and stable tetragonal β-In2S3, with a preferred orientation of (109) at 2θ = 27.3. Furthermore, AFM is examining the exterior morphology of the film, revealing that both surface roughness and average diameter escalate with h

     For this work, the spray pyrolysis technique is employed to create uniform thin films of cadmium telluride (CdTe) at 350°C on glass substrates. For optical and structural examination, the films that were deposited undergo annealing at 573 K and 723 K. In an air atmosphere, before being examined using an XRD, a microscopy force atomic (AFM), and UV-Vis spectrophotometer. The film's cubic structure and polycrystalline nature were demonstrated by the XRD tests with preferred orientation (111), and temperatures for annealing improve crystalline speed. Crystallite size and microstrain were among the microstructural metrics that were computed with an increase in annealing temperatures; it was found that the microstrain decreased and