Tikrit Journal of Pure Science

The results of the inference detection of alcohol extractor for 8 plants from Brassicaceae family which were:(Cardaria draba, Erucaria cakiloidea, Euclium bonmelleria, Hirschfeldia incanna, Leptaleum filifolium, Neotorularia troulosa, Rapistrum rugosum, Sisymbrium irio) showed presence of several chemical compounds, including alkaloids, and all species were positive except E. bonmelleria and R. rugosum that appeared negative at the time of meyer's detection. Phenols compounds, Tannins, Falvonoides, Glycosides, Saponin and Portions were also detected in all species under study, while the result was negative when testing Terpenes in all types under study . The results of the injection of alcohol extract for the 8 species showed 4 concentrations (25,50,75 and 100%) The efficiency of concentration 100% and its ability to inhibit the growth of C.albicans yeast was higher than the other concentrations.

This study was conducted at the College of Science - Department of Life Sciences where it examined the effect of Zingiber officinale alcoholic extract and some antibiotics (Levofloxacin, Vancomycin, Nitrofurantion, Oxacillin) on isolates of Staphylococcus aureus, which were isolated from door handles in the College of Sciences, University of Tikrit, Department of Biology, and through the obtained results the S. aureus was sensitive to all three concentrations (25 – 50 – 75)% of the alcoholic extract, but it was differentially sensitive to the antibiotics as the strongest effect and the largest area of inhibition was for Levofloxacin 5 µg (LEV-5), the diameter of the inhibition zone was (22 mm) compared to the other antibiotics that showed clear and convergent inhibition zones, but less in diameter than LEV-5.

Two neutral chitosan polymer complexes with Ni() and Zn () were prepared and characterized by molar conductivity measurements, IR spectroscopy. The prepared complexes were tested against two types of cancer cell lines breast cancer (MCF-7) and ovarian cancer (A2780). That the Ni-chitosan complex was significantly active then the Zn-chitosan complex with IC50 value is 167.67 4.6 g/ml for (MCF-7) and 200.45 8.23g/ml for (A2780). Whereas IC50 value of Zn-chitosan complex 189.03 3.7g/ml for (MCF-7) and 231.70 5.25g/ml for (A2780)

This presented work was included synthesis of new thioester derivatives by reaction of Aspirin (a non-steroidal anti-inflammatory drugs) (NSAIDs) and Captopril as a carrier which is used as an antihypertensive drug and an inhibitor for angiotensin-converting enzyme (ACE). Aspirin was converted into acid chloride of aspirin then reacted with SH group of captopril to afforded of 1-(3-((2-acetoxybenzoyl)thio)-2-methylpropanoyl)pyrrolidine-2-carboxylic acid and characterized by FT-IR and 1HNMR spectroscopy. The effect of synthesized compound was studied on some biochemical parameters in the blood serum of rabbits. Results of this study indicated: significant increase in the level of total fucose, total protein and globulin. Non- significant increase in the level of albumin, creatinine, glutathione and uric acid, significant decrease in level of Triglycerides and non-significant decrease in the level of Cholesterol, and malondialdehyde.

Six samples of limestone rocks were selected for the Early Miocene Ghar Formation in the Busayyah area south of Nasiriyah city in the southern desert of Iraq, and one sample of clay deposits of the Quaternary age was selected for the purpose of geochemical and mineral evaluation for the manufacture of ordinary Portland cement. The results of the analyzes of limestone for the formation of Ghar showed that it contains Ratios (less than 2%) of magnesium oxide, and the percentage of calcium oxide to more than (52%),Which was in conformity with the Iraqi and international specifications [1] and [2] for the cement industry. playa clays in the region study were analyzed for the purpose of testing and demonstrating their suitability for the cement industry, as recent clays have a high percentage of magnesium oxide, as well as its scarcity in the study sections, as the results showed their suitability for the cement industry. The ratios of lime saturation (LSF), alumina ratio (AR) and silica ratio (SR) were calculated for the mixture consisting of limestone to Ghar Formation, clay, Bauxite and iron oxides. (3) Mixtures of different exposed of Ghar formation were burned at a temperature of 1200 and 1450 °C, and the results showed the validity of the produced clinker and its conformity with international specifications when burning at 1450 °C, while the burnt clinker failed at 1200 °C due to incomplete form of cement phases. The proportions of the mineral phases of clinker were calculated after burning and it was found that the phases and minerals of belite, lalite, ferrite aluminate and portlandite.
Physical and mechanical tests were carried out on limestone from the Ghar Formation, where the compressive strength, specific weight, total density, moisture content and apparent porosity were analyzed.

The study aims to know some of the physical and mechanical properties of limestone rocks within the Pila Spi and Sinjar Formations at the southwestern limb of Bazian Fold within the Sulaymaniyah Governorate, in order to show their suitability as riprap stones. The tests showed that the values of the dry density of these rocks ranged between (1.857-2.341) g/cm³, the water absorption rate ranged from (1.848-9.87)%, and the specific weight ranged from (2.167-2.255), and the values of the chemical erosion ratio ranged between (8.9-29)%. After knowing the physical and mechanical properties of these limestone rocks and comparing them with the standard specifications of the riprap stones, it was found that these rocks are not suitable for riprap purposes in all the stations of the study area most of the stations of the study area.

The current work includes measurements of the resonance angle and reflectance for p-polarization of the electric field by using the Fresnel equation at a given length. Gold's surface plasmon wave can be seen at the metal-to-air boundary. We try to determine the greatest (SPR) angle for a metal thin layer that is most suitable for the surface plasmon excitation while stimulated by a 632.8 nm laser. SPR was performed of a (50nm) single film of gold placed on a glass prism; there are SPR modes in this structure, which match the surface plasmon. We also suggest that the SPR mode associated with the Au surface, which is extremely sensitive to changes in the surrounding environment, particularly (dielectric). A few considerations to be taken into account to attain the SPR, like the incident angle of light rays addressed and analyzed for the purpose of finding the essential value for the plasmon to be emerge; the gold/air resonance angle. Furthermore, we can compare our result with other work, which was performed by using the Finite-Element-Method (FEM), the simulation is done by FDTD (Finite Difference Time Domain) software. SPR was applied in a variety of domains, containing biomedicine science, optics, biomedicine, photo-thermal plasmon, and health.

Distributed databases (DDBs) provide smart processing of large databases, the problems of fragmentation and allocation are vital design problems in addition to the centralized design. The majority of performance degradation in DDBs is due to the communication cost by query remote access and retrieval of data. This can be optimized through an efficient data allocation approach that will provide flexible retrieval of a query by low cost accessible sites. In this paper, a novel high performance data allocation approach is designed using Chicken Swarm Optimization (CSO) algorithm. Data allocation problem (DAP) is a NP-Hard problem modelled as optimization problem. The proposed data allocation approach initially characterizes the DAP into optimal problem of choosing the appropriate and minimal communication cost provoking sites for the data fragments. Then the CSO algorithm optimally chooses the sites for each of the data fragments without creating much overhead and data route diversions. This enhances the overall distributed database design and subsequently ensures quality replication. The experimental results illustrate that the proposed CSO based intelligent data fragment allocation approach has better performance than most existing approaches and thus signifies the impact of efficient data allocation in DDBs.

In this research, two methods were proposed to design a new system to recognize facial expressions. The first method relies on extracting features from the face area, and the second method relies on the process of extracting features on the parts of the face (eyes, nose, and mouth) where the histogram of oriented gradients (HOG) algorithm was used in the feature extraction process in addition to the principal component analysis algorithm to reduce feature dimensions in both methods. We have proposed a group classifier consisting of three basic classifiers: support vector machines, knn-algorithm closest to neighbors, and Naive Bayes in the classification stage. Our proposed algorithm was tested on japanese female facial expression (JAFFE) Dataset and Cohn-Kanade (CK) dataset. It was found that higher overall accuracy is achieved for F1-Score when using the second method of 93.82 % and 94.12% for CK and JAFFA, respectively

In this paper, a priori error analysis has been examined for the continuous Galerkin finite element method which is used for solving a generic scalar and a generic system of linear elliptic equations. We derived optimal order a priori error bounds in H_0^1 (energy) norm utilising standard a priori error analysis techniques and tools. Also, a posteriori error analysis is investigated for a generic scalar linear elliptic equation and for a generic system of linear elliptic equations. We derived optimal residual-based a posteriori error estimates energy technique in H_0^1 norm.

In this article we use the product stochastic differential equations in order to study the solution for some quotient stochastic differential equation by using ito ̂’s formula, Then we find their moments (mean, variance and the k.th moments). Also we gave some examples to explain the method

In this paper we introduce a new Technique, this technique depends on the Fibonacci sequence and Fibonacci Matrices with a Play- Fair which is one of the cryptography systems. This method is applied in two steps, in the first step we generate the Fibonacci matrices with key matrix by particularity Fibonacci sequence to obtain first cipher and the second step we apply the Play-Fair method to obtain the 2nd cipher (final cipher).

The concept of fuzzy set (FS) is one of the beautiful branches in Mathematics. This concept was initiated by Zadeh [1]. Since that time, many studies have been considered this concept by different ways in the field of pure and applied Mathematics. In this article, we introduced the notion of FT and FM on a D-algebras where FT is a fuzzy Translation and FM is a fuzzy Multiplication. We proved some characterizations of FT and FM of sub-algebra and d-ideal of a D-algebras Moreover, the notion of FM-αλ-T has been investigated on the D-algebras Furthermore, some results on the d-homomorphism of FT and FM which based on the fuzzy d-ideal of a D-algebras are presented.

The optimal conjugation coefficient distinguishes conjugate gradient methods such as two-term, three-term, and conditional from other descent methods. A novel conjugation parameter formula is constructed from Zhang, Zhou, and Li's well-known formula to formulate a three-term conjugation gradient method in the unconstrained optimization domain. The conjugation parameter β_(k¬¬+1)^M and the third term parameter θ_(k¬¬+1)^M were constructed by incorporating the Perry conjugation condition into Shanno's memory-free strategy of a conjugate gradient. The approach demonstrated a steeply sloped search direction for each iteration by demonstrating stability, global convergence, and sufficient descent analysis in the presence of a strong Wolf case. The empirical results established that the proposed method is more efficient than Zhang et al.'s techniques. Through the use of a collection of nonlinear mathematical functions.

A new generalization of metric space called partial b-rectangular metric space is introduced. Also, the relation between this generalization and the other generalizations for example a b-rectangular metric space is given. Moreover, we have proved Banach theorem and Kannan theorem of fixed Point in partial b-rectangular metric space. Furthermore, some definitions and results dealing with partial b-rectangular metric space are discussed