In this research, a detailed finite-element (FE) analysis of the combined influence of the drilled-hole position, the shape of the hole, and the fillet design on the structural and dynamic performance of spur gears is investigated. ANSYS R16.2 was used to create a three-dimensional numerical model that can be used to assess the bending stress distribution and vibration response under realistic loading conditions. A trochoidal fillet and four circular fillet radii (0.5, 1.0, 1.5 and 2.0 mm) were studied to determine their effect on the stress concentration behavior. FE-guided hole-suggestion process was introduced which is an automated process in which low-stress zones to be cut away are identified so as to allo

The study aimed to analyze the nature of the relationship between decision-making time and the accuracy of shooting by jumping among handball players who are students of the fourth stage at the College of Physical Education and Sport Sciences to reveal the extent to which cognitive-motor ability contributes to improving offensive skill performance. The study adopted a descriptive approach using the method of relational relationships, and 20 players who were selected deliberately participated. The study used a reaction time system to measure decision time, as well as test the accuracy of shooting from jumping from three specific points within the attack area. The results showed that the Arithmetic mean decision time was 0.828 seconds

In this article, the detailed information was presented about azo-dyes, including a general description of this class of compounds, which included a historical overview, observations on the chemical structure of these compounds, particularly focusing on the azo group (-N=N-) responsible for their coloring properties. In addition, we provided a schematic of the first synthesized azo-compound. Furthermore, we mentioned the general properties of them and viewed a detailed explanation for the categorization of them either aliphatic or aromatic, subdivisions for each category or which category is the most widespread, and then illustrated the types for this class of organic compounds. The effective operator in these compounds called diazonium-sal

Novel azo ligand based on tryptamine, and its metal complexes with antioxidant properties were synthesized through chemical methods and characterized through various techniques, including IR, Mass, UV-Vis spectroscopy, elemental analysis, conductivity, magnetic sensitivity, and thermogravimetric analysis. According to the IR spectra of the complexes, the azo-ligand, [5-(2-(3H- 1-indol-3-yl) ethyl) diazenyl) quinolin-8-ol] coordinates with metal ions through the nitrogen atom in the quinoline ring and the oxygen atom of the hydroxyl group. Thermal analysis techniques were employed to investigate the thermal behavior of the compounds. The results revealed that the metal complexes possess higher thermal stability compared to the free ligand. T

The synthesis and characterization of Schiff base and the complexities of metal ions and the evaluation of its antioxidant activities against 1.1-Diphenyl-2-picrylhydrazyl (DPPH) will compared with standard natural antioxidants and ascorbic acid. These prepared materials gave results are due exhibit excellent radical scavenging activities for all complexes with new prepared from reaction Schiff base and metal ions for [ Mn(II), Zn (II), Cd(II), Pd(II) and Hg(II) ]. The complexes prepared characterization by spectral methods (ultraviolet visible, infrared and mass spectra) will be identified in addition to the element micro analysis, (F.A.A.), magnetic sensitivity. The molar conductance values indicated that the complexes derived from Mn(II)

Determination of the proportion of selected metal elements (Fe, Mn, Co, Cu, Cr, Ni, Mo, Pb, Cd ) using a flame absorption spectroscopy device and the spectroscopy of Graphite furnace, and Phenols so as Free Radical (NO3-, NO2-) using ultraviolet spectroscopy device in the industrial wastewater of Al-Dura (A) and AlNajaf (B) refinery before and after entering the treatment units, taking into consideration the sampling time Varying (more than separated) and setting the temperature during the drawing of the model and conducting a statistical study of the results reached

fields of the College of Agricultural Engineering Sciences, University of Baghdad/Al-Jadriya, in the fall season 2021-2022. With three sowing dates (26 July, 4 August, 12 August), The experiment was implemented according to a randomized complete block design (RCBD) with three replications. The aim is to detect the expression of the INCW1 gene associated with sucrose-to-glucose analysis, which is critical for many metabolic functions in different sink tissues, and determine the amount of fold gene expression to find out which of the genotypes contain the invertase gene, and which ones have a high level of gene expression based on the fold of gene expression. The results showed significant differences in the invertase enzyme activity for the

 Film condensation of steam on a vertical tube is investigated numerically and experimentally,   in the present work. A mathematical model was set based on the basic conservation laws of mass   and energy, Nusselts analysis of film condensation, and empirical equations available in the   literature. Then, a simulation program in FORTRAN language was developed which simulates the   film condensation of steam on a vertical tube. A complete steam tables subprogram was also   developed and incorporated with the main program. The experimental work was carried out using a   steam condensation test bench. The inlet and outlet cooling water temperatures, steam temperature   and pressure, tube surface temperature at center, and co

In this work, we introduce the algebraic structure of semigroup with G-algebra is called GS-Algebra as extension of algebras QS-algebra and BP-algebra and then some basic properties are investigated. Several examples are presented. Also, some ideals in this concept are studied such as GS-ideal and closed-ideal. Some properties and characterizations of GS-ideal are presented. The relationships between GS-ideal and closed-ideal are studied. Furthermore, some results of GS-ideal in GS-Algebra under homomorphism are discussed. Finally, the graph (by its annihilator-ideal) as the simple graph with elements of a GS-Algebra is studied and some related properties are given. Several examples are presented and some theorems are proved.

The study of homomorphism and Cartesian product is one of the most important mathematical tools that preserve algebraic structures. In this work, a new definition of the concept of a cubic bipolar-ideal under homomorphism in a TM-algebra is introduced. Some important theorems are presented. The notion of Cartesian product for cubic bipolar-ideals and cubic bipolar T-ideals is studied. Also, several properties of the Cartesian product for cubic bipolar-ideals are investigated. Furthermore, the level subsets of the Cartesian product of two cubic bipolar-ideals are defined.

This paper aims to extend the concept of cubic sets to neutrosophic sets. The notions of neutrosophic cubic TM-subalgebra, neutrosophic cubic ideal, and neutrosophic cubic T-ideal are introduced, and some related properties are investigated. Some important characteristics of neutrosophic cubic ideal and neutrosophic cubic T-ideal on TM-algebra are discussed. Also, the concept of a level set of a neutrosophic cubic set in TM-algebra is studied.

يهدف البحث إلى جمع الألفاظ الترجيحية الصريحة عند الإمام الحاكم الجشمي في تفسيره ومدى عنايته بالصيغ للوصول إلى أرجح الأقوال، خاصة أنه صاحب باع كبير في علوم الشريعة المختلفة، وفي تفسير القرآن بشكل خاص؛ لذلك أحببت أن أقدم هذا البحث الموسوم بـ" الألفاظ الصريحة في الترجيح ودلالتها عند الحاكم الجشمي في تفسيره  "التهذيب في التفسير" فسلكت في بحثي هذا المنهج الاستقرائي الذي اشتمل على مقدمة ومطلبين، وكل مطلب يتناو

The research aims to identify the concept of green taxes and their role in reducing environmental pollution through the poll of Abnh of taxpayers and employees of the General Authority for taxes totaling 200 individual .autam adoption of the resolution as a tool head for the collection of data and information from the sample and analyzed their responses using a statistical program (spss - 10), and calculating the percentages and the arithmetic mean, standard deviation and research found to a number of conclusions, notably the lack of legislation with the challenges and the difficulty of the existence of a measure or a standard lack of planning for the application of environmental taxes that the state taxation application between the Gene

يهدف البحث بأن هناك تباين في مستوى أداء مهارة الضرب الساحق في التنس ويعزو الباحث أحد أسباب ذلك إلى وجود ضعفاً في مرونة العمود الفقري وبالتالي عدم تحقيق المدى الحركي المناسب فضلاً عن عدم إعطاء القائمين على العملية التدريبية الأهمية الكافية لعنصر المرونة،وعليه فإن البحث يهدف إلى معرفة أثر المنهج التدريبي المقترح في تطوير مرونة العمود الفقري فضلاً عن معرفة أثر تنمية مرونة العمود الفقري على أداء مهارة الضرب ا

يستهدف البحث استكشاف طبيعة تمثّلات الصحفيين العراقيين لهويتهم الوظيفية، ويصنف ضمن البحوث الوصفية، وقد استعمل منهج المسح الوصفي التحليلي، واعتمد عينة قصدية بلغت (80) مبحوثاً من الصحفيين العراقيين، واستعمل أداة (استمارة الاستبيان)، وتوصل إلى استنتاجات عدّة منها: أداء الصحفيين العراقيين أدوار وظيفية، تتسق مع وظائف الصحافة، أبرزها: إمداد الجمهور بالمعلومات، ومراقبة الأداء الحكومي، ونقل وجهة نظر الجمهور إلى

This paper compare  the accurecy of HF propagation  prediction programs for  HF circuits links between Iraq and  different points world wide  during August 2018 when  solar cycle 24 (start 2009 end 2020) is at minimun activity and also find out the best communication mode  used. The prediction   programs like Voice of America Coverage Analysis Program (VOACAP) and ITU Recommendation RS 533 (REC533 )  had been used to generat HF circuit link  parameters like Maximum Usable Frequency ( MUF) and Frequency of Transsmision (FOT) .Depending  on the predicted parameters (data)  , real radio contacts had been done using a radio transceiver from Icom  model IC 7100 with 100W RF

ـ اهداف البحث: وضع منهج تدريبي للتمارين الهوائية المستمرة لعينة البحث. التعرف على اثر المنهج في بعض المتغيرات البدنية والبيوكيميائية والفسيولوجية والقياسات الجسمية ومفهوم الذات الجسمية لعينة البحث. - فرض البحث: 1-هناك فروق ذات دلالة احصائية بين الاختبارات القبلية والبعدية ولصالح البعدية في بعض متغيرات البدنية والمؤشرات البيوكيميائية والفسيولوجية وقياسات الجسمية ومفهوم الذات الجسمية لعينة البحث ـ منهج ال

The emergence of the Internet and its transformation in the early nineties of the last century led to a means of mass communication that brought about significant structural changes in the media map.

Over the course of historical development, the public did not engage the media in its behavior in the implementation and dissemination of an idea, generalization or theory put forward by media experts or practitioners through these means to do it. Blogs represent the most important service provided by the Internet in recent years which has gained special importance in the media field. Where the word “Blogs” has several names: (alternative media), (blogging press), (popular press) and other names.

The medi

أشتمل البحث على خمسة أبواب،حيث تضمن الباب الأول التعريف بالبحث وأهميتة وتم التطرق فيه الى مشكلة البحث وأهدافه وفروضه وأخيرا مجالات البحث،المجال البشري والمجال المكاني والمجال الزماني.أما الباب الثاني فأشتمل على الدراسات النظرية، فقد تم التعرف على أسلوب التدريب داخل المناطق المحددة ضمن قياسات محددة وكيفية أستخدمها في تدريب بعض المهارات الأساسية بكرة القدم. ثم تطرق الباحث الى بعض المهارات الأساسية وبالأخ

Abstract

 Experimental work from Magnetic Abrasive Finishing (MAF) tests was carried out design parameters (amplitude, and number of cycle which are formed the shape of electromagnetic pole), and technological parameters (current, cutting speed, working gap, and finishing time) all have an influence on the mechanical properties of the surface layer in MAF process. This research has made to study the effect of design and technological parameters on the surface roughness (Ra), micro hardness (Hv) and material removal (MR) in working zone. A set of experimental tests has been planned using response surface methodology according to Taguchi matrix (3⁶) with three levels and six factors

This research involved synthesis of new β-Lactam derivative from Azo compound[4-amino-N-(pyrimidine-2-yl)-3-(pyrimidine-2-yldiazenyl) benzene sulfonamide] (S1) record previously by many steps. Starting conversion the free amino group in an azo comp. to chloro acetamide derivative(S2), then reacted it with urea to give the oxazole ring  derivative (S3) that which containing free amino group. The condensation reaction between the amino group and P-bromobenzaldehyde to produce Shiff base (B14). Finally staudinger's cyclo addition reaction go run between the Shiff base derivative (B14) and chloro acetyl chloride in the presence of tri ethyl amine (Et₃N) as Base catalyst and dioxane a

Database is characterized as an arrangement of data that is sorted out and disseminated in a way that allows the client to get to the data being put away in a simple and more helpful way. However, in the era of big-data the traditional methods of data analytics may not be able to manage and process the large amount of data. In order to develop an efficient way of handling big-data, this work studies the use of Map-Reduce technique to handle big-data distributed on the cloud. This approach was evaluated using Hadoop server and applied on EEG Big-data as a case study. The proposed approach showed clear enhancement for managing and processing the EEG Big-data with average of 50% reduction on response time. The obtained results provide EEG r

Polymer additives binder system provides many properties useful in thermal energy storage (TES) then developed the efficient energy storage materials and green strength bodies system.

This paper studies the thermal energy storage property for polyvinyl alcohol (PVOH) / paraffin wax (WPw) blends. To enhance paraffin wax thermal conductivity, PVOH as a material which high conductivity was employed. A fixed weight of Paraffin wax was dispersed with PVOH heterogeneously at different additive weights ratios of PVOH/Pw (50/50, 67/33, 75/25, and 80/20) wt. ratio respectively. The composite material was prepared using wetted pressing method.

Both base materials (polyvinyl alcohol and paraffin wax) were scanned using differential

Mixed convection heat transfer to air inside an enclosure is investigated experimentally. The bottom wall of the enclosure is maintained at higher temperature than that of the top wall which keeps in oscillation motion, whereas the left and right walls are well insulated. The differential temperature of the bottom and top walls changed several times in order to accurately characterize the temperature distribution over a considerable range of Richardson number. Adjustable aspect ratio box was built as a test rig to determine the effects of Richardson number and aspect ratio on the flow behavior of the air inside the enclosure. The flow fields and the average Nusselt number profiles were presented in this wo

هدفت هذه الدراسة إلى تخليق بوليمرات جزيئية جديدة مطبوعة من مونومرات مختلفة والتي تفيد في تحديد أيون الكالسيوم في عينات مصل مختلفة. يلعب أيون الكالسيوم دورًا مهمًا في تخثر الدم وتمعدن العظام. في البلازما، 40 في المائة من الكالسيوم المنتشر مرتبط بالبروتينات، و 10 في المائة في شكل معقدات غير عضوية، و 50 في المائة موجود على شكل كالسيوم مجاني (مؤين). في هذه الدراسة، تم أخذ عينات دم من مرضى السكر

Correlation equations for expressing the boiling temperature as direct function of liquid composition have been tested successfully and applied for predicting azeotropic behavior of multicomponent mixtures and the kind of azeotrope (minimum, maximum and saddle type) using modified correlation of Gibbs-Konovalov theorem. Also, the binary and ternary azeotropic point have been detected experimentally using graphical determination on the basis of experimental binary and ternary vapor-liquid equilibrium data.

            In this study, isobaric vapor-liquid equilibrium for two ternary systems: “1-Propanol – Hexane – Benzene” and its binaries “1-Propanol –