Cultivation of the green seaweed Enteromorpha compressa was performed under natural laboratory spring environmental conditions of temperature, light intensity and photoperiod to study the salinity tolerance of this intertidal green macroalga. Cultivation was carried out under artificial seawater (ASW) of different concentrations (18, 35, 53 and 106 g/l sea salt) compared to the control using natural seawater (NSW). Growth rate and pigment content of the cultivated alga were recorded at regular intervals during the experimental duration. Antioxidant activity of the crude ethanolic extract and its fractions (petroleum ether, chloroform, ethyl acetate and acetone) was performed against DPPH radical scavenging assay and compared to the standard synthetic antioxidant butylated hydroxy-toluene (BHT). The finding showed that enhancement of algal growth rate under ASW concentrations of 35, 53 and to a lesser extent at 106 g/L during the first 15 days of cultivation were due to the increased pigment biosynthesis, photosynthetic and metabolic activities and followed by gradual retardation due to the impact of prolonged salt stress. Antioxidant activity of alga was found to be concentration, type of extract and incubation time dependent. Acetone fraction of all salt concentrations showed higher antioxidant activity compared to other fractions. Pronounced activity was recorded at higher seawater conc. (106g/l).
هدفَ البحث الى التعرف على درجة الاتزان الانفعالي لدى الطلبة، التعرف على الفروق في درجات الإتزان الإنفعالي تبعاً لمتغير النوع (ذكور–إناث) والتعرف على الفروق في درجات الإتزان الإنفعالي تبعا لمتغير المرحلة الدراسية (الاول- الثالث)، من أجل تحقيق أهداف البحث قامت الباحثة إعداد مقياس الإتزان الإنفعالي بالإعتماد على نظرية التحليل النفسي لفرويد، وكان عدد فقرات المقياس بصورة النهائية من (20) فقرة، وطُبق مقياس البحث
... Show Moreيعد موضوع الثورات العربية من الموضوعات التي تحظى بأهمية كبيرة على المستويين الاقليمي والدولي، لذا فقد طورت مؤسسات الابحاث الدولية ومراكز صنع القرار السياسي والاستراتيجي الاطر والمفاهيم الجديدة في مجال السياسة الدولية، نظرا للتطورات التي شهدتها المنطقة العربية والتي استدعت التطرق الى مجموعة من المفاهيم النظرية ذات العلاقة الوثيقة بما هو حاصل في المنطقة العربية من تغييرات مما تطلب الامر البحث والتدقيق ومن
... Show MoreThe Studying of historian aspects in Al-Hadieth books , such as " Al-Musnad Book " subjected to Al-Imam Abi Yalaa Al-mousily" ,has great importance in the field of Islamic history , in which Al- Al-Imam Abi Yalaa Al-mousily has presented valued information that have significant impact on the understanding of history, Have a significant impact on the understanding of Islamic history
The sculpture composing of iron materials is being considered most important raw material that has been used by the modern artist ,especially period of post –modernism. The works of the two artists ( SALIH AL-QARAGHULI and AHMED AL-BAHRANI) the most important works that entailed to be studied for being using iron material in most of their sculpturing works; in works of Al-Quraghuli, we find ores composing of iron wires , animals threads and remaining of trash and to be assembled in a sculptured text with unique style in Arab Home. Moreover, we find huge works of (al-Bahrani) represented into formations characterized with its ironic flexibility, its abstracted engineering forms. Al-Bahrani solely has used iron plates represented in its
... Show MoreSought Current search to know the concepts of modern literature theoretical educational, psychological and social are thinking double and tolerance and the definition of them in the theoretical frameworks of religious, social and psychological to clarify their role in life in general and in university life private and to understand their respective roles in the promotion of the other, and research has included a chapter first to identify the importance and the objectives and terms Search in detail, and a chapter of a second frameworks and theoretical literature of concepts ranging from religious heritage in Islam and other religions, especially the concept of tolerance, then look at social, psy
... Show MoreThe calamities, calamities, problems and constant dilemmas that society is experiencing have made it the responsibility of professors and researchers to find appropriate and effective solutions to these issues, and among those calamities that our societies faced was the problem of the epidemic represented by (Corona-Covid-19),
(Abstract)
A man find himself in front of narrative literal productions when he read the title of this paper that deals with specialist , followers of Arabic literal narration productions through the era of Arabic literature in a period arrived to 1500 years. It is strange to present (Narration art in Arabic heritage) , in addition to (Arabic diwan) . This matter introduces us to come back to the past to inspect Arabic narration production , specially that is called (Artistic narration ) which is full ,variety of purposes and goals.
The study aimed at detecting the extent of the practice of students Almtbakan skills crisis to teach in geographical sections of the Colleges of Education Baghdad University. The current research was limited to students in the fourth stage geographical divisions in the Faculties of Education for Girls and Ibn Rushd / Baghdad University for the academic year 2013-2014.
The View Finder methodology of the study and procedures, explaining the method used to obtain the data and information to achieve the goal of the search, and used the questionnaire and the way to achieve the goal of the research, as it was prepared based on the views of the exploratory and literature and previous studies and the experience o
... Show Moreانصبت هذه الدراسة على قياس جودة الخدمة، وبوجه خاص ماهية أبعاد جودة الخدمة التي يجري قياسها للوصول إلى مستوى جودة الخدمة. وتم التطبيق على خدمة التعليم العالي الخاص، حيث جرى اختيار عينة من طلبة جامعة خاصة لتعبئة الاستبانة الخاصة بالدراسة. وكان هناك 360استبانة تم تحليل البيانات فيها من خلال مؤشرات الإحصاء الوصفي، وتحليل الارتباط، وتحليل الانحدار المتعدد. وقد توصلت الدراسة إلى وجود علاقة ارتباط بين مستويات
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