The hydraulic behavior of the flow can be changed by using large-scale geometric roughness elements in open channels. This change can help in controlling erosions and sedimentations along the mainstream of the channel. Roughness elements can be large stone or concrete blocks placed at the channel's bed to impose more resistance in the bed. The geometry of the roughness elements, numbers used, and configuration are parameters that can affect the flow's hydraulic characteristics. In this paper, velocity distribution along the flume was theoretically investigated using a series of tests of T-shape roughness elements, fixed height, arranged in three different configurations, differ in the number of lines of roughness element

This paper presents the ability to use cheap adsorbent (corn leaf) for the removal of Malachite Green (MG) dye from its aqueous solution. A batch mode was used to study several factors, dye concentration (50-150) ppm, adsorbent dosage (0.5-2.5) g/L, contact time (1-4) day, pH (2-10), and temperature (30-60)   The results indicated that the removal efficiency increases with the increase of adsorbent dosage and contact time, while inversely proportional to the increase in pH and temperature. An SEM device characterized the adsorbent corn leaves. The adsorption's resulting data were in agreement with Freundlich isotherm according to the regression analysis, and the kinetics data followed pseudo-first-or

CIGS nanoink has synthesized from molecular precursors of CuCl, InCl3, GaCl3 and Se metal heat up 240 °C for a half hour in N2-atmosphere to form CIGS nanoink, and then deposited onto substrates of soda-lime glass (SLG). This work focused on CIGS nanocrystals, indicates their synthesis and applications in photovoltaic devices (PVs) as an active light absorber layers. in this work, using spin-coating to deposit CIGS layers (75 mg/ml and 500 nm thickness), without selenization at high temperatures, were obtained up to 1.398 % power conversion efficiency (PCE) at AM 1.5 solar illumination. Structural formations of CIGS chalcopyrite structure were studied by using x ray diffraction XRD. The morphology and composition of CIGS were studied using

This study examines the structural performance of concrete-encased pultruded Glass Fiber Reinforced Polymer (GFRP) I-sections with shear connections. It specifically focuses on how different parameters affect the latter’s ductility, flexural strength, and load-carrying capacity. The key variables studied include various shear connector types, spacing, and geometries, as well as the compressive strength of concrete and the properties of GFRP. The finite element modeling and experimental validation show that the shear connectors significantly improve the ductility, ultimate capacity, and load transmission efficiency. The present review emphasizes that the shear connectors greatly enhance the structural performance when they are prop

A three species food web model involving a stage structure and cannibalism in the top predator species is proposed and studied. It is assumed that the prey species growth logistically in the absence of predator and the predation process occurred according to theLotka-Volterra functional response. The existence, uniqueness and bounded-ness of the solution of the model are investigated. The local and global stability conditions of all possible equilibrium points are established.The persistence conditions of the model are also determined. The local bifurcation near each of the equilibrium points is analyzed. The global dynamics of the model is investigated numerically and compared with the obtained analytical results. It is observed that the p

يتناول هذا البحث قانون الحظر عام  1807الذي أعلنه الرئيس الامريكي توماس جيفرسون وصادق عليه الكونغرس بفرعيه النواب والشيوخ، وبموجبه منع المتاجرة مع بريطانيا وفرنسا ردا على اجراءات البلدين ضد السفن التجارية الامريكية، لكن هذا انعكس سلبياً على الاقتصاد الامريكي ،مما دعا بعض الولايات الامريكية ،التي تضررت كثيرا الى عدم الالتزام به ،وخاصة الولايات الشمالية ،والى ازدياد عمليات التهريب ،ادت اخيرا الى تراجع جي

      تعد خراسان ملتقى العلماء من اقطاب العالم الاسلامي ، لوجود عوامل ساعدت على هذه   الاهمية ، ومنها الامن و الامان ، وتوفر الاموال ، والظروف الملائمة للابداع الفكري ,

   يعد الوزير نظام الملك من أشهر وزراء السلاجقة اهتماماً ببناء المدارس ، التي سميت باسمه (المدارس النظامية).

   نشأت عدة مؤسسات تعليمية في خراسان، وهي دور العلماء ، والمساجد ، والمدارس ، والروابط،  وغيرها .

The reservoir units of Mishrif Formation in Majnoon oil field were studied by using available wireline logs (gamma ray, porosity and resistivity) and facies that derived from core and cutting samples for three wells including Mj-1, Mj-15, and Mj-20. The reservoir properties were determined and interpreted by using IP software. The results showed that unit D have the best reservoir properties due to high effective porosity, low water saturation and very low volume of shale. Furthermore, a large part of this unit was deposited in shoal environment. The other reservoir units are then graded in reservoir properties including units B, A, F & E respectively, except unit C, which is considered as a cap unit, because it consists of rest

The objectives of this work was to study the effect of sex and weight at slaughter on meat quality in the longissimus muscle of Black goat and Meriz goat .Twenty four weaned kids from each breed were divided equally and penned individually into two groups .The 1^st was castrated using rubber ring ,and the 2^nd was left intact ,and was assigned to be slaughtered at 15,20 and 25 kg live body weight .The overall means of  pH, lightness ,redness ,yellowness, drip loss, cooking loss and tenderness were 5.94±0.009 , 46±1.16 , 20.01±0.68 , 35.68±0.78 ,0.25±0.01, 12.17±0.35 ,1.65 <

The aim of this study was to compare the effect of boron and nanoboron" on histomorphology of the small intestine in layer chickens. 210 day-old chicks were used and were randomly assigned to seven equal groups.  The experiment, groups were exposed to both normal boron and nano-boron as follows:G1 received 15 mg/L of boron in their drinking water, G2 got 25 mg/L, G3 got 45 mg/L, while groups nano boron as following G4 got 15 mg/L, G5 got 25 mg/L, G6 got 45 mg/L of nano-boron, and G7 was not given any treatment. By using a light microscope, the  histomorphology result of intestine was  examine to determine the villi's height, thickness, crypt depth, and muscle thickness. The measure

Background: Nodal osteoarthritis is one of the most common arthropathy worldwide, the etiology is uncertain but many biochemical markers are recognized. Many studies have shown that leptin might have a role in the pathogenesis of osteoarthritis, but little is known about the relation between serum leptin and nodal osteoarthritis.
Subjects and method: 52 women with nodal osteoarthritis and 40 apparently healthy women as a control were included in the study; serum leptin was measured in all subjects. Student t-test was applied to find out the significance of difference in the mean v
Results: There was a significant difference in the mean of serum leptin between patients and control groups.
Conclusion:

            The arm plays a crucial role in the freestyle swimming stroke, especially during the propulsion phase, contributing significantly to efficient movement and limb coordination. However, many learners, particularly female students at the College of Physical Education and Sport Science at Baghdad University, face difficulties mastering this skill. Traditional training methods lack immediate feedback on arm force balance and quality, limiting opportunities for simultaneous motor learning and technical improvement. To address this, a new swimming aid was developed to quantitatively measure palm pressure during swimming movements. The device includes sensors on both hands, a data processing unit, and a real-time force coo

            The research aimed to streamline the process for sports clubs in identifying and contracting professional players, focusing on the key quantitative determinants in the players’ transfer market to assess their technical and commercial value. Additionally, it sought to achieve financial returns for the National Federation through the management of market access and the imposition of participation fees. The researchers employed a descriptive-analytical approach with correlational analysis to examine real-world data and identify relationships among variables, addressing the research objectives and questions. The study population comprised employees of the Iraqi Football Association involved in managing the Iraqi Star

Epoxy resin and a mixture with unsaturated polyester resin (UPE) were prepared as the matrix materials. The preparation technique included preparing circular and square molds with different weight ratios. Standard samples (40 mm diameter) were prepared for thermal conductivity tests. The results of the thermal conductivity test of the mixture showed that it decreased from (0.014) to (0.013) significantly, which helps in thermal insulation. The decrease in its thermal conductivity means that the structure of the base material is irregular. Hardness test was performed on samples made of epoxy resin with unsaturated polyester resin, and the best hardness reading was (64.5), but when replacing the unsaturated polyester resin with a higher pe

Al-sarf science is one of the most scientifically accurate and rich in branches. Because it depends on the one accent and how the changes happened inside this science (from an event associated with time or not associated). The people who create this science and were deep made a tough rule to can out of these sentences without reason. The aim of this research is to declare (The Impossible Phenomenon in the Preference Name) and this study is separated into two chapters: 

Section one: it’s content of (Preference) in the base books and the scientists of linguists and the rules that authorized building in the name of Preference. 

The current study found no statistically significant difference in gender or age values between the colorectal cancer (n = 41), colitis (n = 19), or control groups (n = 20), despite the fact that the incidence rate of Colorectal Cancer (CRC) increased significantly with age. In addition, the data showed that alcohol raises the risk by 60.98% in the colorectal adenocarcinoma group who drank alcohol, and the male: female ratio indicated that the majority of patients with early-onset CRC were male patients compared to females. Statistically significant (P≤0.05) differences were found between CRC patients, colitis patients, and control participants who smoked. Furthermore, no significant variations in occupational exposures linked to an el

Let  be an upper triangular operator matrix which is unbounded and defined on , where  is infinite dimensional Hilbert space. This paper is concerned with new spectral properties which defined to other bounded operators. Some sufficient and necessary conditions are given in which these properties are equivalent. We further investigate the relations among Weyl’s type theorems and Brodwe’s theorems for this type of operator under some conditions. As an application the paper define the plate pending problem equation with henge end, fixed end and free end, after transform it to Hamitonian matrix then calculate the spectrum sets for this matrix which leads to if A has eigenvalues of finite multiplicity, so is M. Inaddition if  has fini

Purpose: The current research seeks to embody its primary objectives in diagnosing the relationship between the research variables (digital transformation, human resources flexibility), as well as defining the role of each of them in the General Company for Communications and Informatics.

Theoretical Framework: This study deals with the General Company for Communications and Informatics and presents the latest concepts that previous researchers have reached to contribute to its achievement and expand the company's awareness by adopting any of these models appropriate to its goals and future direction.

Design/Methodology/Approach: The study analyzes administrative data withi

تكمن أهمية البحث في التعرف على مستوى فاعلية الأداء لمهارة الهجوم لدى الفرق لذا ارتئ الباحث أجراء دراسة مقارنة لمستوى فاعلية الأداء لمهارة الهجوم للمنتخبات العربية بالكرة الطائرة باستخدام برنامج تحليلي لغرض الكشف عن نقاط القوة والضعف.ومن خلال متابعة الباحث لمباريات المنتخب الوطني وجد إن هناك ضعف في المهارات الهجومية وخاصة مهارة الهجوم وكانت عينة البحث من الفرق المشاركة في بطولة المشرق العربي ( العراق – لب

An experimental and numerical study has been carried out to investigate the heat transfer by natural convection in air-filled annulus between two horizontal isothermal concentric cylinders with and without annular fins under steady state conditions; the inner cylinder surface is maintained at a higher temperature and the outer cylinder surface at a lower one. In the experimental study, the annulus inner surface is maintained at high temperature by applying uniform heat flux to the inner cylinder while the annulus outer surface is subjected to ambient temperature and maintained at low temperature. The experiments were curried out at a range of Rayleigh number (1.81×103 – 4.03×104) for case without fins and (1.08×103 – 2.94×104) fo

يمثل التذهيب بوصفه ابداعا فنيا ومجالا متميزا وأساسيا في الطرز المعرفية للفنون الإسلامية فهو يتعدى ان يكون صنعة أو حرفة فجماليته توحي انه فن مميز من الفنون الإسلامية كالخط والتصوير والزخرفة وفن التجليد   وغيرها 

ظهر في مدينة مرو خلال القرن الخامس الهجري بعض العلماء المراوزة ممن كانت لهم اهتمامات موجهة نحو العلوم العقلية،  ومما تجدر الاشارة اليه، انه من خلال البحث بين التراجم والمصادر والمصنفات المختلفة لم تسعفنا الا بعدد ضئيل منهم، يمكن القول وهو واضح وبصورة جليّة لاي قارىء انه لا يوازي الاهتمام بالعلوم الدينية المهمة البارزة على المسرح الفكري لمدينة مرو، وخاصة علمي الحديث والفقه 

لطالما تُبنى قرارات الاستثمار في أسهم الشركات المدرجة في أسواق البورصة على خلفية المؤشرات المالية لها والتي عادةً مايتم إصدارها في نشرات سنوية معتمدة من قبل تلك الاسواق، إذ غالباً مايقوم المحللون الماليون بالاستعانه بها لتوجيه المستثمرين لإتخاذ القرارات المتعلقة بشراء أو بيع أسهم هذه الشركات.

لكنه على الرغم من ذلك تحدث إنهيارات كبيرة في أسواق البورصة بين فترة وآخرى وخير مثال على ذلك ما أ

The foreign trade in agricultural products form an important factor for developing countries, including Iraq, because of their great importance in the conduct of agricultural products to regional and global markets and supply there agricultural products from the outside world, thus the imports of agricultural products and goods represent great importance in countries that suffer from the domestic production unable to bridge the consumers needs, especially in the short run.The study aims to analysis and determine the most important economic factors those affecting the quantity of imports of  the chicken meat during the period (1985-2013), where the most important variables those affecting were: the domestic production of chic

This  research  was  conducted  in  the  plant  tissue  culture  Lab. College  of Agriculture / University  of  Baghdad  from  February to  October  2015. The aim  of  the  study  was  investigating  the  influence  of  combinations  of Indole  butyric  acid (IBA) ,  Naphthalene  acetic  acid (NAA) and  polyamine Spermidine (Spd.) on rooting of shoots of  citrus volkameriana rootstock cultured  on 1\2  MS medium. The Results indicated that 1/2 MS medium supplemented  with 1.0 mg L^-1 (IBA)  gave the highest  percentage 

In the context of increasing the use of nanometals in electrical and electronic applications and improving their unique electrical properties, this research explains the effect of the mechanisms of scattering of phonons at room-temperature (293K) in addition to the scattering and reflection of electrons at the surface and at grain boundary on the electrical resistivity of Tungsten metal at different thicknesses. The electrical resistivity of Tungsten was obtained by solving the Boltzmann transport equation which the electron scattering coefficient at the surface (p) is calculated by the Fuch-Sondheimer model, and the grain boundary reflection coefficient (R) by the Mayadas-Shatzkes model were calculated as (p=0.89) and (R=0.18) for Tungs

يتناول البحث دراسة ظاهرة الحجاج في التراث الشعري العربي ،ويسعى الى بيان وجود جذور وأسس فنية ونقدية لأسلوب الحجاج في الموروث الثقافي العربي، ويتخذ من  معلقة الشاعر لبيد بن ربيعة أنموذجا للدراسة، إذ لا يخفى عن الباحث والمتتبع للظواهر النقدية ما في تراثنا العربي من جذور وأوليات لأغلب النظريات والمناهج النقدية الحديثة ومنها نظرية الحجاج

       أدرك المسلمون منذ القدم أهمية الماء كمصدر للحياة، مما جعلهم يولون له عناية خاصة في مختلف تصنيفاتهم الجغرافية والتاريخية والفقهية، ومراعاة لعنصر الماء فقد تنوعت أحكام الفقهاء حسب مضامينها الوظيفية الدنيوية أو الدينية. فراح هؤلاء يجمعون أحكاما متنوعة للمياه في أبواب وأجزاء متكاملة تعكس مدى ما وصل إليه المسلمون من تقدم في حل اشكالية الندرة والخصومة التي تنتج عنها خاصة بين المزارعين والف

الآثار الاقتصادية - الاجتماعية للنهج الاقتصادي الليبرالي روسيا أنموذجاً