The steady state performance of the counter rotating floating ring Journal bearing is analyzed with isothermal finite bearing theory. The effect of different parameters affecting the performance of the bearing (namely speed ratio, clearance ratio and radii ratio), have been investigated. The load carrying capacity of the bearing increasing with decreasing the radii ratio (R2/R1) of the ring and clearance ratio (c1/c2), in the other hand, the coefficient of friction increases with increasing the clearance and radii ratios, while decreases with incre4asing the bearing to journal speed ratio (γ). It is shown during this work that different operating conditions are greatly enhanced the performance of such bearings.
نشأ الانسان منذ بدأ الخليقة محباً للجمال بما يراه من حوله في الطبيعة وكان حريصاً على تزيين نفسه ومنزله بجلود الحيوانات أذ كان السجاد في مراحله الأولى بدائية حتى بلغت الذورة عندما أكتسى السجاد خملة زادته فائدة بأن جعلته أكثر مقاومة وأكثر حفظاً للدفء (الجبوري،2001 ، ص10)وأن التطور الهائل في العلم في هذه السنوات أدى الى أستخدام الكثير من المنتجات والوسائل التي سهلت على الأنسان الكثير من أمور حياته (العبود،2008،ص12) “
... Show MoreThe importance the youth because they are the fundamental basis of the development process so to be an emphasis on their active participation in community building . When there is community participation the democratization . Will tazzfa community because the process of community participation and develop the capacity to carry on almsoulin among young people and will lead to culture of self confidence and alhawwar walaklauah . Beactivted and community participation for young people through several channels . Family , school , media and civil society organization as we discussed in the research factrstnat hinder community participation of youth in development . The most important factors that hinder participating based on patriarc
... Show MoreThe present study attempts to give a detailed discussion and analysis of parenthetical constructions in English and Arabic, the aim being to pinpoint the points of similarity and difference between the two languages in this particular linguistic area.The study claims that various types of constructions in English and Arabic could be considered parenthetical; these include non-restrictive relative clauses, non-restrictive appositives, comment clauses, vocatives, interjections, among others. These are going to be identified, classified, and analyzed according to the Quirk grammar - the approach to grammatical description pioneered by Randolph Quirk and his associates, and published in a series of reference grammars during the 1970
... Show Moreالمنطق منهجا نقديا - دراسة في قراءة الشكل الجمالي كتاب (المنطق منهجا نقدياً – دراسة في قراءة الشكل الفني) يهتم الكتاب بدراسة التصورات المنطقية في الفنون التشكيلية وهو يقع في اربعة فصول خصص الاول منها لبيان المنهجية والفكرة العامة عن علاقة المعرفة بالقواعد الفكرية والقواعد المنطقية موضحا ذلك في (مدخل عام) وتعلق الفصل الثاني بالمفاهيم المنطقية وما كتبه علماء المنطق في عرض شامل ومكثف تناول فيه المؤلف مفهوم ال
... Show MoreThe argumentation find its origins in some conceptions laid by Aristote. A speaker always intends to influence his hearers to change their beliefs. Therefore, this study deals with texts of the political speech of the French presidents Nicolas Sarkozy and François Hollande in the treatment of argumentative strategies.
Los enunciados interrogativos desempeñan un papel de sumo interés en el habla del ser humano en todo el mundo, además de la gran importancia que desempeñan sus distintos enunciados y partículas en abreviar las oraciones y hacer llegar a nuestro interlocutor nuestra intención con pocas palabras, por eso a través de esta investigación vamos a enfocar la luz sobre uno de sus tipos fundamentales "los enunciados interrogativos directos", a través de un estudio morfológico contrastivo entre el árabe y el español, este fue el principal motivo para elegir este tema.
A pesar de que los enunciados interrogativos directos aparentemente no ofrecen mucha dificultad, pero dominar a dicho tipo de enunciados con
... Show MoreAbstract
Among the things that have happened and that have emerged from the developments in society is the phenomenon of dairy banks, where institutions collect milk from donating mothers or sellers of milk and benefit from it by sterilizing and selling it.
This topic is considered one of the important topics, as Islam considers breastfeeding as a link as well as parentage, and it has the same genealogy as the spread of sanctity. Therefore, Imamate jurists addressed this topic with research despite its absence in Islamic societies.
The importance of r
... Show MoreThis research discussed the freedom of Iraqi women in the thought of Dr. Nazeeha Al-Dulaimi.
In the current study, haemoglobin analytes dissolved in a special buffer (KH2PO4(1M), K2HPO4(1M)) with pH of 7.4 were used to record absorption spectra measurements with a range of concentrations from (10-8 to 10-9) M and an absorption peak of 440nm using Broadband Cavity Enhanced Absorption Spectroscopy (BBCEAS) which is considered a simple, low cost, and robust setup. The principle work of this technique depends on the multiple reflections between the light source, which is represented by the Light Emitting Diode 3 W, and the detector, which is represented by the Avantes spectrophotomer. The optical cavity includes two high reflectivity ≥99% dielectric mirrors (dia
... Show Moreيهدف هذا البحث الى تحديد اثر الاختلاف في ادراكات العاملين للعدالة التنظيمية في المنظمات قيد البحث. وقد تم اعتماد الادراك كمتغير تفسيري، اما العدالة التنظيمية فمثلت المتغير الاستجابي بانواعها الثلاث (العدالة التوزيعية، العدالة الاجرائية، والعدالة التفاعلية)، ولتحقيق اهداف البحث فقد تم اختيار دائرة صحة بغداد/ الكرخ مجتمع للدراسة. وجرى تصميم استبانة ووفق مقياس خماسيي الدراجات وجرى تحليل البيانات باستخ
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