Abstract

In this study, mucilage was extracted from Malabar spinach and tested for drag-reducing properties in aqueous liquids flowing through pipelines.  Friction produced by liquids flowing in turbulent mode through pipelines increase power consumption. Drag-reducing agents (DRA) such as polymers, suspended solids and surfactants are used to reduce power losses. There is a demand for natural, biodegradable DRA and mucilage is emerging as an attractive alternative to conventional DRAs. Literature review revealed that very little research has been done on the drag-reducing properties of this mucilage and there is an opportunity to explore the potential applications of mucilage from Malabar spinach. An experi

A new (Reversed Phase- High Performance Liquid chromatography) RP-HPLC method with Ultraviolet-Visible spectrophotometry has been optimized and validated for the simultaneous extraction and determination of antioxidants present in Iraqi calyces of Hibiscus Sabdraffia Linn. The method is based on using ultrasonic bath for extracting antioxidants. Limit of detection in μg/ml of Vitamin C, Sabdaretine, Gossypetine, Hibiscetine, Anthocyanins, Dephinidin-3-glucoside were113.8294×10-6,123.0453×10-6,70.3681×10-6,59.6730×10-6,148.1710×10-6,and125.3481×10-6 respectively. The concentration of antioxidants found in dry spacemen of calyces of Iraqi Hibiscus Sabdraffia Linn. under study: Vitamin C, Sabdaretine, Gossypetine, Hibiscetine, Anthoc

The study conducted on the compositions of epiphytic diatoms on three taxa of aquatic plants were selected (Phragmites australis Trin ex stand , Ceratophyllum demersum L. and Typha domengensis Pers) in three sites within Al-Auda Marsh, from autumn 2013 to summer 2014 . The study was measured physical and chemical factors of all the study sites, such as: air temperature, power of hydrogen (pH), electrical conductivity (EC), salinity (S‰), total hardness(TH), dissolved oxygen (DO), and plant nutrient. The results showed that water of marsh was oxygenated and it was very hard. A total of 111 taxa of phytoplankton were identified, which belonged to 13 families and 26 genus (one family and two genus of centric diatoms, 12 families and 26 ge

Abstract
This study aims to evaluated the user satisfaction of retrieval services
concerning to universities thesis and dissertations in university dissertation
unit of Baghdad Library for achieving the following objectives:
1- Evaluating the performance of this unit (thesis unit of Baghdad University
Library) regarding to users opinion.
2- Recognizing the reasons in this unit behind the case of non satisfaction of
its users and trying to find the suitable solutions.
To achieve those two objectives, the questionnaire tool was performed
and determined the user's satisfaction level by using a sample survey. 1118
graduated students were subjected to this experiment. The following main
results were appeared:<

This study aims to examine the technologies of education and their importance, shedding light on their reality and  status in Sudan especially in the secondary stage. It has become necessary to invest these technologies and include them in different aspects of the technical education curricula. Such a step helps cope with the innovative scientific development in the advanced countries, qualify professors and technicians, develop the factories and workshops, and create an attractive technical educational environment to the pupils. Thus, the researcher has adopted a descriptive analytical approach that is based on conducting pilot visits to certain technical schools in Al-Khartoum state. Different aspects of such schools were examined

ان الحالة الانسانية في العراق تنطوي على تحديات كبيرة تتمثل بالفقر – والبطالة – وازدياد المدن العشوائية البائسة التي تفتقر الى المياه الصالحة للشرب ومنظومات الصرف الصحي – وتدني مستوى الخدمات العامة – والهجرة من الريف الى المدينة نتيجة تدهور امكانيات القطاع الزراعي – والتزاحم في المدن الكبيرة – وتداعيات التصحر – والتدهور البيئي – وتبديد الموارد الطبيعية – ومافيات الفساد والتهريب – وكذا الحال مع ا

The current research aims know:

1.-level application managers secondary schools and junior high for the tasks set by the high school system in Iraq, from the standpoint of teachers.

2. statistically significant differences in the extent of the application of secondary school principals and junior high for the tasks set by the high school system from the viewpoint of teachers depending on the variable (sex, specialty, number of years of service).

The researcher used the descriptive analytical method being considered best suited to such studies, for the purpose of achieving the goals of research, the researcher using the questionnai

  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

لدى التنمية المستدامة العديد من الأهداف، ويبرز تحسين جودة التعليم من هذه الأهداف إذ تسعى جميع دول العالم لتطبيقه، ونشاهد دولة العراق التي تعاني من تراجع في مستوى التعليم بشكل غير اعتيادي وارتفاع عدد الامية والهروب من المدارس وعدم وجود أبنية دراسية جديدة للطلاب. وفي الوقت نفسه نشاهد الحكومة العراقية الحالية تبذل جهدها من أجل تحسين جودة التعليم وأنها توفر الوظائف للمتفوقين والكفوءات والمجتهدين، وإنها توفر ك

ان المشكلة البحثية تتحدد في ان المهام والادوات التي تملكها السلطة التنفيذية، من الصعوبة تركها من دون رقابة، والرقابة والتقييد ياتي من اطراف عدة، واهمها: السلطة التشريعية، فالبرلمان في العراق منح اختصاصات للنظر في اعمال واداء السلطة التنفيذية بما يضمن تقيدها بالدستور الاتحادي. والهدف من هذا البحث هو الاشارة الى اهمية الاختصاصات الممنوحة للبرلمان العراقي، بما يضمن التاسيس لدولة القانون، اي وجود مرجعية قانو