Samarra Journal of Pure and Applied Science

This study evaluates the predatory efficiency of seven of the nematofagousl fungi. The study shows that monacrosporium eudermatum is superior in its predatory efficiency to the other studied species, with 87 % killing after 4 days of incubation followed by Arthrobotrys oligospora, which killed 81 % followed by Monacrosporium. cionopagum, which resulted in 36 % killing, then Arthrobotrys longospora, killing 35%, then Dactylella gampspora, killing 24 %, Arthrobotrys arthrobotryoides. Killing 13 % and Arthrobotrys dactyloide is the least common, killing 9 % murder increases with time and all with fungal species studied.

The aim of this study is to evaluate calcium deficiency and its relationship to some biochemical variables during the three stages of pregnancy for some pregnant women in the city of Samarra. Blood samples are collected from (66) pregnant women who were diagnosed by specialized doctors. Their ages ranged between (18-40) years, from the Samarra General Hospital and outpatient clinics, and (24) healthy women of similar ages. The level of calcium, vitamin D, parathyroid hormone, alkaline phosphatase, phosphorous and albumin were measured. The results show a high level of vitamin D and Parathyroid Hormone (PTH), alkaline phosphatase (ALP) and albumin in pregnant women compared to the control group, while calcium decreased compared to the control group. Where the thyroid hormone PTH and albumin are more low in the first period of pregnancy, while calcium and phosphorus are lower in the third period of pregnancy, while ALP was lower in the second period of pregnancy, while vitamin D is significantly lower in the third trimester of pregnancy, as the results showed that the correlation between calcium and PTH is a negative relationship, while the relationship between calcium, vitamin D, albumin, and phosphorus is poorly positive, and the relationship between calcium and ALP is weak positive relationship. From this, we can conclude that there is a relationship between the low level of calcium and pregnancy and therefore can be considered as indicators of an increased risk of osteoporosis in women.

This study is conducted to isolate and diagnose the aerobic bacteria species and fungi causing dental caries from children under twelve years who suffer from dental caries of both gender. During the period from 29 July to 9 December 2019, collecting fifty-nine specimens from patients who infected dental caries admitted to Al Afraz Health Center and outpatient clinics in the Samarra city. The result of isolation and diagnosis, seven bacterial types were shown in addition to the yeast like Streptococcus mutans, Staphylococcus epidermidis, Staphylococcus aureus, Candida albucans, Escherichia coli, Pseudomonas aeruginosa, Klebsiella Sp, Proteus mirabilis. Of the 59 patients with teeth decay, the Streptococcus mutans had scored the highest rate 26% of the total infections, followed by Staphylococcus epidermidis 22% while the lowest rate was scored by Proteus mirabilis 1%

This article presents design and analysis of a microstrip patch antenna by using two interlocking circular discs with antenna dimensions of 60 x 60 x 1.5 mm. The antenna is design to be suitable for use in mobile communications and to work on multiple frequency range based on direct feeding. Simulation results are analysed by using the program CST microwave studio. In order to design and calibrate the final antenna to cover the frequency range: from 2GHz to 6.5GHz. We studied the properties of the patch antenna designed with the help of the CST and upload the changes that occur to the parameters of the proposed antenna model. The results show can tune antenna by changing the dielectric constant and the thickness of the dielectric layer according to the required application. Additionally, we carried out experiment for the proposed antenna to verify the CST results and the results are identical to simulation results.

This work includes the adsorption study of four azo dyes. The used dyes are p-COOH RD, m-NO2 RD, p-Br RD, and p-NH2 RD. The study aims to determine the most efficient sites of the dyes that connect to the surface of the adsorbent to understand the mechanism of removing these dyes from contaminated water. The calculations have been achieved using quantum mechanics methods including two semiempirical methods AM1, PM3, and Ab initio (HF). The total energy of the molecule 18.167 kcal., the energies of HOMO -3.060 ev and LUMO -5.357 ev, the energy gap between them, hardness, and atomic charges have been calculated. The obtained results show that the nitrogen atoms in the azo dyes are the most influencing factor affect the adsorption process. By comparing the practical results with the theoretical ones, it was found that the azo group the most efficient group on the stability of these compounds and responsible for the adsorption of the studied compounds.

This study aims to evaluate of using of the aqueous extracts of soybean Glycine max leaves and Phaseolus vulgaris beans in preparing local planting media for the development of some fungi isolated from the soil and seeds of different plants and compared them with the standard PDA, as the isolated fungi were both phenotypically and biologically tested through several tests represented by a test. The decomposition of gelatin, casein, and starch as well as testing the ability of these fungi to represent some carbon sources. Media prepared with the same ingredients in the standard medium other than replacing the potato extract with soy and bean extracts both p for me, the results were as follows: The use of the two prepared mediums of beans and soybeans showed a significant superiority in the growth of fungi compared to the standard medium, as the medium of the beans gave the highest average diameter of the growth of fungi reached 6.62 cm compared to the standard medium which gave the lowest average of 5.76 cm. As for the fungi species, the Fusarium oxysporium fungi was significantly superior to the other species, and gave the highest average growth diameter of 7.00 cm compared to the fungus Aspergillus flavus, which gave an average of 5.48 cm. As for the interference between the type of culture medium used and the type of fungus, the treatment of interference between the medium of beans and the Fusarium oxysporum was significantly superior to other interventions.

In this study, the levels of natural radionuclide concentrations were measured for radium ((_ ^226)Ra ), thorium((_ ^232)Th) and potassium((_ ^40)K) in the building materials used in Tall Al Ubaid Archaeologist site of Dhi-Qar Governorate-Iraq. Using one of gamma-ray spectroscopy techniques, which consists of a scintillation detector sodium iodide activated by thallium NaI (Tl) with dimensions of (3"×3"), measurements performed at the laboratory of environmental and radiation pollution research in the department of Physics, College of Science, University of Dhi-Qar. The obtained results for radionuclides in all of building materials samples were analyzed and tabulated against the global average and the allowed limits as recommended by international scientific agencies. The average value of specific radiative activity concentrations values of natural radioactive elements ((_ ^232)Th,(_ ^226)Ra and(_ ^( 40))K ) and the equivalent activity of Radium )〖Ra〗_(eq.)( for samples of building materials are (15.17- 21.47, 11.04-20.92 and 192.75-291.45) Bq⁄Kg and (49.60-71.78) Bq.⁄Kg, respectively. The absorbed dose rate (nGy/h), annual effective dose (mSv/y), estimated gamma coefficient (Bq/Kg) were calculated. All values in the four studied areas were lower of the allowable limits, all values of the risk index (internal and external) in units (Bq/Kg) in the studied archaeological sites are less than one. All the results indicate that all concentrations of radioactive elements targeted in the study were within the allowable limits despite the differences in the concentration values of these elements according to the samples.

The area of Chebyshev polynomial functions plays an important role in mathematic with applications in computer science and engineering. New shifted modified Chebyshev polynomials are considered in the present article. An explicit expression of the definition for shifted modified Chebyshev polynomials with some important relations and interesting properties is first derived. Then new expression formulation for constructing shifted modified Chebyshev operation matrix of derivative is given. Such polynomials are used as basis functions to propose and analyze direct numerical technique to optimal control problem having a quadratic performance index, based on shifted modified Chebyshev polynomials together with its operation matrix of derivative, such a problem is reduced into an optimization technique which can be solved easily using quadratic programming algorithm. For confirming the validity and accuracy of the presented method some numerical examples are included a long with a comparison between the obtained results against the exact one.

With the advances in ICT infrastructure, a new technology has emerged, that is cloud computing. Cloud computing is one of the most significant technologies enabling companies to manage their resources, and to save and share data safely through the internet. Choosing the right cloud computing platform which meets the company's needs is not easy to handle task. In this Paper, the main three cloud computing platforms, namely, Google, Microsoft, and Amazon, were studied. Also, these platforms were compared and classified according to the possibilities they offer. This study aims at helping companies to choose the right cloud computing platform which meets their needs and requirements.

In this article, we consider a Camassa-Holm equation in 2+1 dimensions in terms of Jumarie’s fractional derivatives. By applying fractional complex wave transform to reduce the number of independent variables, a system of nonlinear ordinary differential equations is obtained. The extended tanh method is next used to construct some types of parametric solutions for the three fields. Kink and antikink solutions are found and plotted for some values of the parameters.