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alkej-487
Kinetic Study of Esterification Reaction
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The Esterification kinetics of acetic acid with ethanol in the presence of sulfuric acid as a homogenous catalyst was studied with isothermal batch experiments at 50-60°C and at a different molar ratio of ethanol to acetic acid [EtOH/Ac]. Investigation of kinetics of the reaction indicated that the low of [EtOH/Ac] molar ratio is favored for esterification reaction, this is due to the reaction is catalyzed by acid. The maximum conversion, approximately 80% was obtained at 60°C for molar ratio of 10 EtOH/Ac. It was found that increasing temperature of the reaction, increases the rate constant and conversion at a certain mole ratio, that is due to the esterification is exothermic. Activity coefficients were calculated using UNIFAC program. Results showed deviation in activation energy in the non-ideal system of about 20% this is due to the polarities of water and ethanol compared to the non-polar ethyl acetate this dissimilarity leading to strong non- ideal behavior. The homogenous reaction has been described with simple power-law model. The chemical equilibrium combustion calculated form the kinetic model in agreement with the measured chemical equilibrium.

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Publication Date
Sun Jan 01 2017
Journal Name
المجلة القانونية العلمية المحكمة
الضمانات القانونية لتنفيذ الالتزامات الضريبية في عمل السلطة المالية في جمهورية العراق دراسة مقارنة
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Publication Date
Thu Jul 02 2009
Journal Name
Journal Of Educational And Psychological Researches
صعوبات تدريس مادة التاريخ الأوربي لمرحلة الخامس الأدبي دراسة تطبيقية من وجه نظر المدرسين
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اهمية البحث :

أصبح التغير المتسارع في جميع مجالات الحياة يمثل السمة المميزة لعصرنا الحالي ونتيجة التغير فقد برزت الحاجة إلى تطوير برامج المؤسسات التربوية والتعليمية لكي تواكب تلك التغيرات خاصة وان الصيحات تعالت من هنا وهناك لا عادة النظر في العلمية التربوية ومحتواها وأهدافها ووسائلها بما يتح للمتعلم الاستفادة القصوى من الوسائل والأدوات التعليمية في رفع مستوى تحصيله الدارس واكت

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Publication Date
Mon Nov 12 2018
Journal Name
Arab Science Heritage Journal
عمارة عمارة المشهد الحسيني المقدس في ضوء رسومات المطراقي زادة (941ه/1534م) " دراسة تحليلية "
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   The drawings of The travelers artist is important historical document and sources for  important information about The most of The city and building and different Islamic art which idling  because of different causes like wars and destruction or natural causes and disasters like eruptions and earthquakes and floods  which we cannot make a clear form about the buildings  mapping in later period .

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Publication Date
Wed Dec 25 2019
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
معوقات قياس ضرائب الدخل بطريقة الاستقطاع المباشر في العراق: ( دراسة ميدانية في جامعة البصرة )
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  The aim of the research is to highlight the income tax by direct deduction in Iraq and the most important problems and obstacles faced by this type of taxes and identify the reasons for the clear and striking differences in the deduction between those charged with the state departments to reach the exact calculation in accordance with the laws and instructions and the unification of tax deductions for similar cases and clarify Cases of confusion and ambiguity, and achieving justice by deduction, whether in favor of the taxpayer or financial authority. Under the laws and regulations in force.

  The study was conducted on a sample of the salaries of the employees of the University of Basra, and interviews with account m

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Publication Date
Sun Apr 01 2018
Journal Name
Journal Of Economics And Administrative Sciences
متطلبات تطبيق المواصفة ISO 9001:2008)) في الشركة العامة لصناعة الزيوت النباتية دراسة حالة
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The research is to use the specifications and detection of the main and secondary causes of the problems that lead to the weakness and low quality of local production in Iraqi companies and develop appropriate solutions to them, as Iraqi companies suffer from the low quality of production, And the adoption of the requirements of ISO 9001: 2008, which contributes to the development of production processes within the company, and through the field co-operation and survey conducted for public companies affiliated to the Ministry of Industry and Minerals, The importance of the research through the statement of the most important problems facing the General Company for vegetable oil industry in terms of low and weak in production qual

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Publication Date
Sun Jan 01 2012
Journal Name
Journal Of The College Of Languages (jcl)
Die sytaktische Struktur und semantische Bedeutung der konzessiven Ausdrucksmöglichkeiten im Deutschen und Arabischen Eine interpretierende Studie
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Die vorliegende Forschung erklärt ein sprachliches Phänomen im Deutschen und Arabischen, dessen Aspekte die Grund-Folge-Relation (Kausalität) im Allgemeinen sowie den wirkungslosen Gegengrund (Konzessivität) im Besonderen behandeln.

In diesem Kontext wird der Unterschied der verschiedenartigen Gründe der Kausalität im Deutschen, wie wirklicher Grund (kausal), möglicher Grund (konditional) und wirkungsloser bzw. unzureichender Gegengrund (konzessiv) gezeigt.

Die theoretischen Darlegungen der konzessiven Ausdrucksmittel in dieser Forschungsarbeit werden durch diverse praktische Beispiele aus der deutschen und arabischen Literatur fundamentiert.

Das Hauptziel dieser For

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Publication Date
Wed Dec 25 2019
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
التهديدات المؤثرة على استقلال مراقب الحسابات: دراسة في مكاتب تدقيق الحسابات في سلطنة عمان
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The auditor plays a key role in economic life because of the confidence his report adds to the audited financial statements. In applying the various stages of the audit process, the auditor must maintain a high moral level that determines his type of commitment in his professional behavior before God first, And to the society at last in a way that supports its independence. On this basis, the aim of the research is to identify the threats that affect the independence of the auditor. To achieve the objective of the research, the hypothesis that there is a statistically significant relationship between the threats facing the auditor and his professional independence was formulated. In the light of testing the hypotheses of research it was

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Publication Date
Tue Mar 10 2026
Journal Name
College Of Education For Women Journal
أساليب التضليل الإعلامي وانعكاسها على تشكيل الرأي العام دراسة ميدانية على جمهور مدينة بغداد
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،يريغت وأ ةلكشم وأ ةثداح ةجيتن ،ةعمالجا وأ درفلا هذختي فقوم هرهوج في ماعلا يأرلا دعي ةيوبرت تماكارتو ،ةيرثك تانوكم لىع هسسأ في موقي وهف اذل ،ةشاعلما ةايلحا تاقايس في لصيح فيو ،عمتمج يلأ يعماتجلاا لعفلا ةيصوصخ تاقايس بسحب يرسي ايرطف نوكي ام اهنم ،ةيفاقثو يعولا ةلاح تيبثت ديرت تاهج نم ةلعتفمو ةعنطصم تايطعمب اهيريست وأ اهذحش متي ىرخأ نايحأ ليكشت ةيلمع تنترقا ذل ،ةثدالحا كلت مهف ةأطو ليلقت وأ يريغت وأ فرح وأ ي

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Publication Date
Thu Dec 01 2011
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
مدى الالتزام بعناصر الرقابة الداخلية في هيئة التعليم التقني: دراسة ميدانية في بعض المعاهد
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Aimed at the researcher during his research to characterize the elements of internal control under the standards of the state and measurement and analysis of the extent to which those elements in the form of technical education through a selected sample included the three institutes (Institute of Directors Technical Institute for the preparation of the trainees and the Institute of Technology). The researcher used the method of analysis the descriptive terms used questionnaire to collect the necessary information and were subject to analysis using descriptive statistical methods Kalost mean and standard deviation, and research found a set of conclusions, including a commitment to the elements of internal control in the form of technical

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Publication Date
Mon Jun 01 2015
Journal Name
Journal Of Economics And Administrative Sciences
Using the Logistic Regression Model in Studding the Assistant Factors to Diagnose Bladder Cancer
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The cancer is one of the biggest health problems that facing the world . And  the bladder cancer has a special place among the most spread cancers in Arab countries specially in Iraq and Egypt(2) . It is one of the diseases which can be treated and cured if it is diagnosed early . This research is aimed at studying the assistant factors that diagnose bladder cancer such as (patient's age , gender , and other major complains of hematuria , burning or pain during urination and micturition disorders) and then determine which factors are the most effective in the possibility of diagnosing this disease by using the statistical model (logistic regression model) and depending on a random sample of (128) patients . After

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