Introduction: This study aimed to evaluate the impact of ozonated water on water sorption and solubility of heat-cure acrylic resin. Methods: Thirty-three samples of heat-cured acrylic resin were manufactured and divided into three groups: control, immersion for 10 and 20 minutes in ozonated water. Water sorption and water solubility tests were carried out in line with ADA Standard No. 12 for denture-base acrylic resin. Data were analyzed using one-way ANOVA at a significance level of 5%. Results: There was a nonsignificant difference between the control and experimental groups regarding water sorption (P

The effect of the optical feedback on the polarization flipping point and hysteresis loop was studied. The polarization flipping occurred at all angles between the polarizer axis and the laser polarization. The polarization flipping point changed by an optical feedback occurred at angles from 0° to 90°. Ability of choosing or controlling the laser polarization was determined by changing the direction of vertical and horizontal polarization by polarizer rotation in the external cavity from 0° to 90°.

    In this study, the concept of fuzzy α-topological vector space is introduced by using the concept  fuzzy α-open set , some properties of fuzzy α-topological vector spaces are proved .We also show that the space is -space iff every singleton set is fuzzy α- closed .Finally, the convex property and its relation with the interior points are discussed.

One of the challenging and active research topics in the recent years is Facial Expression. This paper presents the method to extract the features from the facial expressions from still images. Feature extraction is very important for classification and recognition process. This paper involve three stages which contain capture the images, pre-processing and feature extractions. This method is very efficient in feature extraction by applying haar wavelet and Karhunen-Loève Transform (KL-T). The database used in this research is from Cohen-Kanade which used six expressions of anger, sadness fear, happiness, disgust and surprise. Features that have been extracted from the image of facial expressions were used as inputs to the neural networ

      إن هذا البحث المعنون (الترجيح في الأسماء المرفوعة عند عبد الفتاح الحموز في كتابه التأويل النحوي في القرآن الكريم) درس الباحث فيه ترجيحات الحموز النحوية وتحديداً الأسماء المرفوعة فالباحث يبدأ المسألة بالآية التي استشهد فيها الحموز ثم يورد الآراء التي ذكرها الحموز وبعض الآراء التي لم يذكرها فيها وبعد مناقشة تلك الآراء يختمها الباحث بترجيح الحموز الذي يكون فيه موافقاً لأحد تلك الآراء المطرو

يهدف هذا البحث إلى تقويم كفاءة البنية المكانية لأبراج شبكات الأنترنيت باستخدام الـ GIS ، لتحديد أنماط توزيعها ونطاقات خدمتها في مدينة الموصل. وانتهى البحث الى أنّ التوزيع المكاني للأبراج يُعدُّ من النمط المتجمع بقيمة 1-6% وخاصة بالقرب من الاستعمالات السكنية، وتباين نطاقات خدمتها المقدمة بحسب الشركات لقدرة أبراج بعضها على تقديم خدمات بما يزيد عن 60% من مساحة سكان المدينة وحجمها، مقارنة بأبراج شركات أخرى لم تتج

Al- Masab AL-Aam canal (or the Main Drain) is a vital strategic project in Iraq. It collects the drain water from the agricultural lands and drains to the Arabian Gulf via Shatt Al-Basra. Fifteen water samples were collected from different sites along the course of the Al- Masab Al-Aam canal southern sector extending from Nasiriyah Basra to evaluate the hydrochemical properties. The variation of the sediment’s texture along the southern sector was investigated. The results reflected that the sediment is characterized by the presence of sand, silt, and clay. It is noted that the amount of salt in the water increases during the summer when temperatures are rising, and consequently, the evaporation rate increases. Changes in the saturatio

المقدمة :

تعد الاحجار من اولى المواد التي استخدمها انسان بلاد الرافدين منذ العصور الحجرية بعد نزوله من الكهوف منذ عصور ما قبل التاريخ الى منطقه السهل وانتقاله من مرحله جمع القوت الى انتاجه . وقد ورد ذكر الاحجار في المصادر المسمارية السومرية بصيغه (Na₄)^([i]) كعلامه داله تسبق الاحجار في حين ورد ذكرها في اللغة الاكدية بصيغة abnu))^([ii]) كعلامه داله ع

التأثيرات البيئية لصناعة الأعلاف وانعكاساتها على العاملين، فأتضح بأن صناعة الاعلاف من الصناعات التي تقل تأثيراتها على البيئة وعلى العاملين فيها لذلك صنفت ضمن مشاريع الصنف (ج) أي المشاريع التي تقل أو ينعدم فيها التأثيرات السلبية، بالرغم من ذلك إلا أن هناك عدة إجراءات تضعها وزارة البيئة يجب الأخذ بها عند القيام بإنشاء المعمل، فضلاً عن ذلك تعد صناعة الاعلاف من الصناعات التي تعتمد على مواد أولية ذات أصل نباتي

   تبحث هذه الدراسة في تقييم ترجمة الإستعارات في كتاب إليف شفق (حليب أسود) وفقا لإستراتيجيات نيومارك (1981) التي وضعها حول ترجمة الإستعارات. تم تقييم النص الأصلي و المترجم بغية تحديد ما إذا كانت الصورة المجازية قد تم نقلها على نفس المستوى أم لا, إضافة إلى تقييم الإستراتيجيات التي إستخدمها المترجم في نقل الإستعارة و مدى صحة إختياراته في النقل و مدى صحة الترجمة أيضاً. أظهرت النتائج أن أكثر إستراتيجية مستخدمة

حققت الحضارة السومرية في منتصف الالف الرابع ق.م قفزة معرفية واسست أول مجتمع متحضر في التاريخ , مؤسسة تاريخها من خلال نشاط حركة الافكار المتحولة والمتجددة بشكل متسارع , مليء بالمستجدات والابداعات , ففي مدينة الوركاء برز لنا اختراعان مهمان كان لهما الأثر البارز في تطور الحياة البشرية وتحضرها الا وهما الكتابة والاختام الاسطوانية . وبقدر ما يمثلان هذان الاختراعان من انتصار معرفي عظيم فهما حفضا لنا تاريخ الانسان

This paper aims to study, the process of satellite transition between different orbits and evaluate the characteristics of the turbulent transitional orbit of transferring a satellite from Low Earth Orbit (LEO) to geostationary orbit (GEO) (hp=35790km). The measurements in this research involve considering different LEO characteristics of perigee heights (h_p=200, 400, 600,800) and eccentricities (e=0.01, 0.05 and 0.1), whereas the inclination is fixed to be (i= 23.445 degree).Also, the transfer of the satellite was studied in two stages. The first stage was from the perigee of the first orbit at height 200 km, to the apogee of the second orbit at height 945 km with eccentricity (0.01). the second stage, was the transition the satellite

هدف البحث الحالي إلى تعرف دور مؤسسات رياض الأطفال في تنمية المسؤولية الاجتماعية لدى الأطفال من وجهة نظر المربيات في محافظة حماة، وتعرف الفروق في استجاباتهن تبعاً لمتغيرات عدة، وتكونت العينة من (300) مربية، وأُعدّت استبانة مكونة من (42) بنداً. بينت النتائج: إن دور مؤسسات رياض الأطفال في تنمية المسؤولية الاجتماعية لدى الأطفال من وجهة نظر المربيات كان بدرجة مرتفعة على الاستبانة ككل وعلى جميع أبعادها. يوجد فرق دال

 تمكن اغلب المرشدين من تحفيز طلبتهم للقيام بأعمال تطوعية إنسانية بين بعضهم البعض، وللمجتمع المحيط بهم ايضاً، ذلك من خلال التوجيهات الالكترونية الى جانب التوجيهات والارشادات داخل المدرسة، بحيث تولد لدى العديد من الطلبة دافعية العمل تطوعياً، ومن بين ابسط الاعمال التطوعية التي تعلمها اغلب الطلبة والطالبات هو القيام بحملات لتنظيف الصفوف بدافع ذاتي بعد ان تلقوا توجيه من قبل مرشد الصف، او المرشد التر

تتناول هذه الدراسة ظاهرتي الكسوف والخسوف من خلال ثلاثة مصادر مملوكية هي: بدائع الزهور في وقائع الدهور لابن اياس، وكتاب السلوك لمعرفة دول الملوك للمقريزي، وكتاب النجوم الزاهرة في ملوك مصر والقاهرة لابن تغري بردي، نحصي في هذا البحث كل الكسوفات والخسوفات في هذه المصادر وندرس منهج المؤرخين في تدوينها ومقارنتها فيما بينها ومعرفة دقة رصد هاتين الظاهرتين من خلال سجلات الكسوف والخسوف الحديثة.

The question on affine Riesz basis of Walsh affine systems is considered. An affine Riesz basis is constructed, generated by a continuous periodic function that belongs to the space on the real line, which has a derivative almost everywhere; in connection with the construction of this example, we note that the functions of the classical Walsh system suffer a discontinuity and their derivatives almost vanish everywhere. A method of regularization (improvement of differential properties) of the generating function of Walsh affine system is proposed, and a criterion for an affine Riesz basis for a regularized generating function that can be represented as a sum of a series in the Rademacher system is obtained.

Select 30 isolate from Bacillus to detect the ability to produce pullulanase enzyme in liquid and solid state fermentation, and use the isolate Bacillus licheniformis (Bs18) because the highest production of enzyme, the optimum condition for the production of enzyme by liquid state fermentation (LSF) in growen with: media contains starch + pullulan as a carbon source, peptone as a nitrogen source, inoculums size 2 ml, and incubated at 40 C° with pH 7 for 48 hrs. In addition pullulanase production by solid state fermentation (SSF) was investigated using isolated Bacillus licheniformis (Bs18). Optimization of process parameters were carried out ,the optimum solid substrate , Temperature , pH , incubation period , inoculation size , hydrat

Breast cancer is one of the most common malignant diseases among women;
Mammography is at present one of the available method for early detection of
abnormalities which is related to breast cancer. There are different lesions that are
breast cancer characteristic such as masses and calcifications which can be detected
trough this technique. This paper proposes a computer aided diagnostic system for
the extraction of features like masses and calcifications lesions in mammograms for
early detection of breast cancer. The proposed technique is based on a two-step
procedure: (a) unsupervised segmentation method includes two stages performed
using the minimum distance (MD) criterion, (b) feature extraction based on Gray

Several studies have been made to understand the behavior of Total Electron Content (TEC) in the topside of the ionosphere during two types of geomagnetic storms. The aim of this research is to examine the ionospheric disturbances using the TEC parameter during the great and severe geomagnetic storms that occurred during the period (28-30 October 2003). Theexamination was conducted for the region,includingIraq and surrounding areas that cover the arealatitude 27-39^oN; longitude 27-54^oE). TEC data were obtained fromthe Defense Meteorological Satellite Program (DMSP), to determine the type of geomagnetic storm, the Disturbance storm time (Dst) index was gathered for the selected days from the website Koyota, Japan WDC

The aim of this paper is to analyzed unsteady heat transfer for magnetohydrodynamic (MHD) flow of a second grade fluid in a channel with porous medium. The equations which was used to describe the flow are the momentum and energy, these equations were written to get thier non dimentional form. Homotopy analysis method (HAM) is employed to obtain a semi-analytical solutions for velocity and heat transfer fields. The effect of each dimensionless parameter upon the velocity and temperature distributions is analyzed and shown graphically by using MATHEMATICA package.

In this paper, a discrete- time ratio-dependent prey- predator model is proposed and analyzed. All possible fixed points have been obtained. The local stability conditions for these fixed points have been established. The global stability of the proposed system is investigated numerically. Bifurcation diagrams as a function of growth rate of the prey species are drawn. It is observed that the proposed system has rich dynamics including chaos.

During the Maastrichtian, the rudists and benthic foraminifera of Aqra Formation underwent two major radiations, the first beginning in early Early Maastrichtian and peaking in the late Early Maastrichtian, and sconed extending from the early Late Maastrichtian to a late Late Maastrichtian peak.The radiations were punctuated and separated by prominent extinction episodes, fit with global Maastrichtian mass extinction.The high level of rudist, endemism [90%] allows definition of true regional origination and extinction pattern; these may represent global pattern for rudists. Radiation and extinction patterns in the northern Iraq [Kurdistan Region] can be variously related to relative sea level fluctuation and the rate of food and clastic

The cadastral map is very important because it has technical and materialist
specification of the property borders and these maps which are land registration
based on it in Iraq, the problem is an ancient maps and unfit for use, despite its
importance, Therefor the updating and digitize the cadastral map is very pivotal, this
is what we have done in the present work.
In the present work, we have an old cadastral map (as a paper) was made in 1932
with modern satellite image (Quick Bird ) 2006, which has 61 cm resolution for the
same area after. Geometric correction technique has been applied by using image-toimage
method or (image registration ) and after that we get new agricultural cadaster
map and connect the

In this work, a comparative analysis for the behavior and pattern of the variations of the IF2 and T Ionospheric indices was conducted for the minimum and maximum years of solar cycles 23 and 24. Also, the correlative relationship between the two ionospheric indices was examined for the seasonal periods spanning from August 1996 to November 2008 for solar cycle 23 and from December 2008 to November 2019 for solar cycle 24. Statistical calculations were performed to compare predicted values with observed values for the selected indices during the tested timeframes. The study's findings revealed that the behavior of the examined indices exhibited almost similar variations throughout the studied timeframe. The seasonal variations were adopt

     Three seismic instantaneous attributes (phase, frequency, and variance) were utilized on 3D-seismic poststack migrated data, covering 617.31 km², integrated with data of two wells (Du-1 and Du-2) in Dujaila oil field, southeast of Iraq. They gave good results in detecting reef buildups and confirmed the existence of the stratigraphic hydrocarbon trap that was not obvious in the conventional seismic amplitude sections. They display several seismic criteria in attribute sections for recognizing reef buildups and hydrocarbon accumulation, such as phase reversal, low frequency, and high amplitude variance. The seismic attributes emphasized that the stratigraphic trap of reef rudist buildups with hydrocarbon content is con

     Nanomaterials became targeted materials for many important applications due to its huge surface area and quantum confinement effects. In this work TiO₂ nanoparticles (30nm) were used as additive to enhance the corrosion protection of steel rebar in artificial concrete solution (Ca(OH)₂ (2g), KOH (22.44mg), NaOH (8mg) in 1L of distilled water) against saline environment (3.5%NaCl) at four temperatures; 20, 30, 40, and 50á´¼C. Three different concentrations of TiO₂ NPs were used namely; 1, 3, and 5% by weight. The corrosion parameters and pitting probability were followed using Tafel and cyclic polarization plots respectively. Protection enhancement was recorded at all TiO_2<

The conviction that herbal drugs have enormous health benefits has led to increase the rate of their consumption by Nigerians. The aim of this study was to assess the carcinogenic property of some popularly consumed anti-diarrheal herbal drugs via polycyclic aromatic hydrocarbons (PAHs) quantification. Three prevalent anti-diarrhea herbal drugs , Odunmo herbal drug (Hibiscus rosa-sinensis and Bacopamonnieri), Orogun herbal mixture (Hibiscus sabdariffaI and Hedera helix), and Alora herbal syrup (Aloe vera and Hibiscus sabdariffaI) were bought for the purpose of this study and they were coded as samples A, B, and C, respectively. The ultrasonic extraction of the herbal drugs was carried

Human perception involves many cognitive processes, such as memory, attention, and critical thinking. An important cognitive process is memory, which is usually connected with the storing and retrieval of information. Different colors and labeling have diverse physiological effects on humans. Our investigation aimed to determine if a change in color or labeling would have a significant effect on memory span and serial recall. However, our results do not support that coloring and labeling have significant impacts on a subject’s memory.