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تحضير الكاربون المنشط المايكروي والنانوي من مخلفات حبوب الذرة باستخدام الكربنة الحرارية واشعاع المايكروويف
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This research work involves the preparation of nano activated carbonand macro activated carbon from corn seeds with a various mixing ratio ofpotassium hydroxide (1:0, 1:0.2, 1:0.4, 1:0.6, 1:0.8 and 1:1) % using thermaland micro radiation carbonization to identify the best mixing ratio. At studyto confirmed that the efficiency and effectiveness of the prepared of activatedcarbon samples increase when ratio potassium hydroxide increase with athermal and micro radiation carbonization was used. The study of samplesexternal surface area was performed via studying the adsorption of methyleneblue from their aqueous solution, also measured the internal surface area wasperformed via studying the adsorption of iodine from their aqueous solution.Measurement of density and humidity content were also been studied. Todetermine the efficiency and effectivity prepared samples. The samples werecharacterized by atomic force microscope (AFM), scanning electronmicroscopy (SEM)

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Publication Date
Sun Mar 01 2009
Journal Name
Al-khwarizmi Engineering Journal
Mass Transfer Coefficient During Cathodic Protection of Low Carbon Steel in Seawater
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The aim of this research is to calculate mass transfer coefficient, kd, during cathodic protection of low carbon steel in neutral seawater (3.5% W/V NaCl in distilled water with pH = 7). Two types of cathodic protection were used:

First: Sacrificial anode cathodic protection (SACP) were a pipeline of steel carrying seawater  using zinc as a sacrificial anode and with variable temperatures ranged (0 – 45oC) and volumetric flow rate ranged (5 – 900 lit/hr). It was found that the kd increases with increasing temperature and volumetric flow rate of seawater, where kd ranged (0.24×10-6 – 41.6×10-6 m/s).

Second: Impressed current cathodic pr

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Publication Date
Thu Dec 28 2017
Journal Name
Al-khwarizmi Engineering Journal
The Effect of Increasing Carbon Concentration Increasing on the Mechanical Properties of TiCx Thin Films
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Carbides or nitrides thin films present materials with good mechanical properties for industrial applications as they can be coatings at low temperatures serve temperature sensitive surfaces. In this work the effect of the C percentage on the mechanical properties represented by the Young modulus (E) of combinatorial magnetron sputtered TiCx (34%x˂65%) has been studied. The structure of the produced films is TiC independent on the C concentration. The mechanical properties are increased with increasing the C concentration up to 50%, and then decreasing with further C % increasing. These results can be explained by considering the resultant residual stresses.

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Publication Date
Wed Aug 01 2018
Journal Name
Journal Of Economics And Administrative Sciences
إعداد خطة قبول خمسية للطلبة في كلية الإدارة والاقتصاد/ جامعة بغداد باستخدام منهجية (بوكس – جينكنز) لتحليل السلاسل الزمنية
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المستخلص:

 إن من أهم عوامل نجاح أي مؤسسة (سواء كانت مؤسسة تعليمية أم غيرها من المؤسسات) هو التخطيط الاستراتيجي السليم المبني على أساس علمي ونظام واقعي متكامل بعيداً عن التخمين والحدس.

تتمثل مشكلة البحث بوجود تفاوت بين أعداد الطلبة المقبولين فعلاً والطلبة المخطط قبولهم في الدراسات الأولية بكلية الإدارة والاقتصاد بجامعة بغداد في كل عام دراسي حيث غالباً كانت أعداد الطلبة المقبولين فعل

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Publication Date
Sun Jun 23 2024
Journal Name
Iklīl For Humanities Studies
Aspectos de las dificultades de traducción de los textos comerciales del árabe al español جوانب من صعوبات ترجمة النصوص التجارية من اللغة العربية الى اللغة الاسبانية
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La traducción de los textos comerciales es una de las traducciones especializadas, trata los textos y los términos relativos al ámbito del comercio. El objetivo esencial de este breve estudio es arrojar luz sobre algunas dificultades de la traducción del árabe al español en cuanto a la documentación comercial como certificados de pago o cobro, pólizas de embarque, actas de reuniones de Sociedades, ejercicios de las empresas contratos, certificado de profesión, poderes comerciales, medidas tributarias, cuentas corrientes, activos corrientes ,etc. los ejemplos mencionados en este estudio los hemos extraído de textos y comprobantes comerciales árabes disponibles en el internet. En el fin de este trabajo ponemos breve glosario de té

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Publication Date
Sat Dec 17 2022
Journal Name
Iraqi Journal Of Laser
PDF Photodynamic effect of Rose Bengal activated by low-level laser light on S. aureus : Qusay K. Abbas*, Layla M. Hassan
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Abstract: Background: Staphylococcus aureus is Gram-positive bacteria that lives as a normal flora in living organisms but can be pathogenic to humans. Although a relatively unspectacular, nonmotile coccoid bacterium, S. aureus is a dangerous human pathogen in both community-acquired and nosocomial infections. Due to the increasing emergence of new strains of this antibiotic-resistant bacteria, it has become essential to approach different methods to control this pathogen. One of these methods is the antimicrobial photodynamic inactivation process using a low-level laser, in this paper, the Photodynamic effects of Rose Bengal and LLLL on the virulence factors of S.aureus were evaluated.

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Publication Date
Thu Feb 07 2019
Journal Name
Iraqi Journal Of Laser
Synthesis Characterization and Optical Properties of Nanostructured Zinc Sulfide Thin Films Obtained by Spray Pyrolysis Deposition
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In this work, nanostructure zinc sulfide (ZnS) thin films at temperature of substrate 450 oC and thickness (120) nm have been produced by chemical spray pyrolysis method. The X-Ray Diffraction (XRD) measurements of the film showed that they have a polycrystalline structure and possessed a hexagonal phase with strong crystalline orientation of (103). The grain size was measured using scanning electron microscope (SEM) which was approximately equal to 80 nm. The linear optical measurements showed that ZnS nanostructure has direct energy gap. Nonlinear optical properties experiments were performed using Q-switched 532 nm Nd:YAG laser Z-scan system. The nonlinear refractive index (n2) and nonlinear absorption coefficient (β) estimated for Z

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Publication Date
Tue Dec 05 2023
Journal Name
Baghdad Science Journal
Synthesis, Characterization and Properties of Trimethylolpropane Triesters from Coconut (Cocos nucifera) Methyl Esters
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In this study, the acid-alkaline transesterification of refined coconut seed oil (RCOSO) to fatty acid methyl ester was followed by the production of a trimethylolpropane-based thermosensitive biolubricant using potassium hydroxide, and its physicochemical characteristics were evaluated. The American Standard Test for Materials (ASTM) was employed to ascertain the biolubricant's pour point and index of viscosity, which were found to be -4 oC and 283.75, respectively. The opposite connection between lubricant viscosity and temperature was shown by the measured viscosities at varied transesterification to be transformed into biodiesel. Following this, a biolubricant was created by further transesterifiedtemperature. The ester gr

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Publication Date
Fri Dec 30 2022
Journal Name
Modern Sport
علاقة الثبات والتوازن بدقة مهارة التصويب من القفز عاليا بكرة اليد
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تلخصت مقدمة البحث بأن التحليل  الحركي الميكانيكي وسيلة مهمة بواستطتها يتم تشخيص وتقيم الظاهرة بشكل موضوعي وفق أسس علمية ثابتة ،بأستخدام التقنية الحديثة، وكرة اليد من بين الألعاب التي ظهرت في الآونة الأخيرة بمستوى أداء يجذب إعجاب المشاهد لهذه اللعبة، كماأن الدقة في التصويب تعد مفتاح لتحقيق الهدف من خلال وصول الكرة إلى المكان الصحيح ودخولها إلى المرمى قبلَ أن تكون فرصة للصد . و مشكلة البحث بان اللاعب يهدر

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Publication Date
Tue Jan 01 2002
Journal Name
Al-adab Journal
تقويم برنامج التربية العملية في جامعة بغداد من وجهة نظر الطلبة
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Publication Date
Tue Mar 01 2005
Journal Name
Albahith Alalami
الجوانب الدعائية في السينما العالمية اثناء النصف الاول من القرن العشرين
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شهدت السينما اثناء عمرها الممتد عبر نحو قرن من الزمن احداثا وتطورات سياسية مهمة، فضلا عن التطورات التقنية والفنية وكانت السينما حاضرة وشاهدة على احداث سياسية بارزة مر بها العالم قبل واثناء وبعد الحربين العالميتين الاولى والثانية وفترة الحرب الباردة وما بعده. وقد حظيت السينما اثناء النصف الاول من القرن العشرين باهتمام كبير من قبل الدول الكبرى والسياسيين فيها فضلا عن الاقبال التجاري للشرك

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