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طريقة عمل قالب رملي معالج مع مادة الرزن لإنتاج مصبوبات برونزية
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أن استخدام طريقة الشمع المفقود و الصب بالرمل كان ولا يزال ، قديماُ و تقنياته قديمة وغير مطورة لذا تم التركيز على طريقة الصب بالرمل الذي أعتاد الحرفيون ، غالباً على أستخدامه لسهولة عمله وتدني الكلفته ، ولكن تبقى هذه القوالب محدودة الإمكانيات و كفاءتها محدودة و تنهدم بسهولة ولا يمكن نقلها أو تحريكها من مكان لآخر .ولكن باستخدام مادة البولستر رزن كرابط مع رمل المقالبة هو العنصر الجديد الذي سيحسن كثيراً من أداء هذه القوالب ويمنح الرمل المعزز بالرزن قوة عالية إذ يمكن نقله و تحريكه من دون أن ينهدم و كذلك تحسين سطح المسبوكة البرونزية وكفاءة القالب ، الذي هو موضوع بحثنا هذا
 
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Publication Date
Sun Oct 02 2016
Journal Name
Journal Of Educational And Psychological Researches
" The Effect of Gardens Ideas Strategy on Deductive Thinking Among Fourth - Grade Science Students in Physics "
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The current research aims to know the effect of gardens ideas strategy on deductive thinking among fourth-grade science students in physics.
   To investigate from the aim of the research, researchers put the following zero
hypothesis:

- No statistically significant differences at the level of significance (0.05) between the students mean scores of the two groups on indicative thinking test.

      The research was carried out on the scientific fourth grade male students in Al – Mansour in Baghdad; belong to Education Directorate Al- Karkh /1, for the Academic Year (2014-2015) A.D.

&

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Publication Date
Mon Mar 07 2022
Journal Name
Journal Of Educational And Psychological Researches
The Degree of Difficulties in Learning Mathematics for the Fifth and Sixth Grades from the Teachers' Point of View and Their Suggestions for Addressing Them
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The current study aimed to identify the difficulties faced by the student in mathematics and possible proposals to address these difficulties. The study used a descriptive method also used the questionnaire to collect data and information were applied to a sample of (163) male and female teachers. The results of the study found that the degree of difficulties in learning mathematics for the fifth and sixth grades is high for some paragraphs and intermediate for other paragraphs, included the student's field. The results also revealed that there were no statistically significant differences at the level of significance (α = 0.05) between the responses of the members of the study sample from male and female teachers to the degree of diffi

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Publication Date
Sun Jul 02 2017
Journal Name
Journal Of Educational And Psychological Researches
Bayer effective strategy in the development of deductive thinking when students fifth grade literary material in history
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Supervised By : Prof. dr. Shaker Jaseem Mohammed This research aims to identify the (effectiveness of Bayer's strategy in the development of deductive thinking among students in the fifth grade literary material European history) and to achieve the goal set researcher null hypothesis of the following: • There is no statistically significant difference between the average scores of the experimental group which studied the use of Bayer's strategy and the control group, which studied the use of the usual way in the development of deductive reasoning. The study sample consisted of (84 students) of the students in the fifth grade literary breeding Baghdad / Karkh second Directorate for the academic year 2015-2016 were distributed Aanhaldras

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Publication Date
Tue Apr 01 2008
Journal Name
Journal Of Educational And Psychological Researches
أثر أستراتيجية الملخصات القبلية على التحصيل والاستبقاء لدى طالبات الصف الثاني متوسط في مادة التاريخ
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Research problem: the problem of the current research can determine the dimensions of answering the following question - What is the impact of the use strategy summaries tribal collection and retention in the second grade students in the middle of history?
The importance of research: In order to achieve the desired education and access to educational goals required, and to address all the challenges facing the educational process, so you may need to use methods and different educational methods in the teaching of social history, particularly, of those methods and modalities to adopt strategies tribal in teaching, has chosen researcher summaries tribal style, which is one of the strategies of goo

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Publication Date
Sat Feb 09 2019
Journal Name
Journal Of The College Of Education For Women
The Impact of Polia Strategy in the Achievement and Retention of the Grammar of the Arabic Language
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ABSTRACT
Threw this research to the following:
1 - Know the impact of strategy Puglia in the collection of the rules of the Arabic language
students at the Institute of preparation parameters .
2 - Know the impact of the retention strategy in Puglia collection rules Arabic language
students at the Institute of preparation parameters .
To verify the status Mmermaa Find researcher Elsafreeten following two hypotheses :
1 - There is no statistically significant difference between the average score for the collection
of the fourth grade students at the Institute for the preparation of material parameters who
were studying grammar strategy Puglia and average grades collectible fourth grade
students at the Institu

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Publication Date
Sun Apr 01 2012
Journal Name
Journal Of Educational And Psychological Researches
أثر استراتيجية ( فكر – زاوج – شارك ) في تحصيل مادة التاريخ والاحتفاظ بها لطلاب الصف الرابع الأدبي
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The current research aims to know on influence strategy (thinking – pairing – sharing) in learning subject of Islamic civilization of Arab and keep it for students 4th class / literary in order to aim of research , the researcher takes measures of experimental method which included selection of experimental designing with partial adjustment in two groups (experimental and controlling) . Experimental group studies according to strategy (thinking – pairing – sharing) , while controlling group studies according to normal way , the researcher choose Zari secondary school for boys in Baghdad intently to run experiment within it. Sample of studying consist of from (64) students , by (32) student in experimental group and (32) students

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Publication Date
Tue Jan 02 2018
Journal Name
Journal Of Educational And Psychological Researches
The impact of learning strategies in the collection of biology and their systemic thinking
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Research Summary The aim of the search for knowledge of the effect generative learning strategy in: 1 - Achievement of the second grade. 2 - Systemic thinking for the second grade students when studying the biology. The study sample increased (60) students distributed into two equal experimental and control groups. Prepare the test of 40 pieces of multiple choice type and prepare a test for systematic thinking according to three skills 1. Understand the relationships between the parts of the systemic form and complement the sentences given 2 - complement the relationships between parts of the systemic form 3. Building the systemic form. It was a search result 1- There is a difference of statistical significance (at level 0.05) between th

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Publication Date
Fri Sep 30 2011
Journal Name
Al-khwarizmi Engineering Journal
Effect of Solid Loading on Carbon Dioxide Absorption in Bubble Column
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In the present work experiments were conducted to study  the effect of solid loading (1,5 and 9 vol.%) on the enhancement of carbon dioxide absorption in bubble column at various volumetric gas flow rate (0.75, 1 and 1.5 m3/h) and absorbent concentration (caustic soda)( 0.1,0.5 and 1 M  ). Activated carbon and alumina oxide (Al2O3) are used as solid particles. The Danckwerts method was used to calculate interfacial area and individual mass transfer coefficients during absorption of carbon dioxide in a bubble column. The results show that the absorption rate was increased with increasing volumetric gas flow rate, caustic soda concentration and solid loading. Mass transfer coefficient and interfac

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Publication Date
Sun Jul 01 2018
Journal Name
Journal Of Educational And Psychological Researches
The effect of constructivist model of yager in acquiring the geographical concepts among first intermediate students in geography
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The purpose of the study is to investigate the effect of the constructivist model of yager in acquiring the geographical concepts among first intermediate students in geography. The study was carried on based on the null hypothesis, which states, there is no significant difference at the level of (0.05) between the experimental group that follows yager model in learning the principles of geography, and the control group that studies the same subject considering the traditional methods of learning, the. To do so, a sample of (70) first-intermediate student were chosen purposefully from two random class for the academic year (2016-2017) divided into two groups. The selected schools located at Al-rusafa side in the city of Baghdad, as well

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Publication Date
Mon Jan 02 2017
Journal Name
Journal Of Educational And Psychological Researches
The impact of teaching with analogies in collection of chemistry students grade average and their attitudes towards article
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this research aims to identify the impact of teaching with ana logies in collection of chemistry students grade average.And direction in order to verify to the zero hypothesis has been formulated and validated,The researcher conducted experiment lasted a full semester as experimental design was chosen (exactly)two equal one pilot and another officer.The research community has been  selected one of intentional Middle School of the Education Directorate in B aghdad Karkh second either search sample consisted of (68) students from second grade average (34 ) Students for each group randomly selected research groups was equal to the following variables (lifetime months,parent of first grade chemistry degrees average test informat

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