Linear attenuation coefficient measurement in polymer composite

Nesreen B. Al-Rawi

doi:10.30723/ijp.v12i25.299

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Publication Date

Tue Feb 12 2019

Journal Name

Iraqi Journal Of Physics

Volume

12

Issue Number

25

DOI

10.30723/ijp.v12i25.299

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Linear attenuation coefficient measurement in polymer composite

Attenuation

polymer

Beta particle.

Nesreen B. Al-Rawi

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Linear attenuation coefficient of polymer composite for beta particles and bremsstrahlung ray were investigated as a function of the absorber thickness and energy. The attenuation coefficient were obtained using NaI(Tl) energy selective scintillation counter with ⁹⁰Sr/⁹⁰Y beta source having an energy range from 0.1-1.1 MeV. The present results show the capability of this composite to absorber beta particles and bremsstrahlung ray that yield from it. That’s mean it is useful to choice this composite for radiation shielding of beta ray with low thickness.

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Publication Date

Tue Feb 05 2019

Journal Name

Journal Of The College Of Education For Women

Technology Usage in English Language Teaching and Learning: Reality and Dream

ايمان موفق مسلم

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The aim of the study is to diagnose the real level of technology usage in teaching and learning EFL at university from teachers and students’ viewpoints, and see if it is possible to achieve something of the researchers’ dream - accessing top universities. Two questionnaires have been used to measure the range of technology usage in Colleges of Education for Women, Baghdad and Iraqi Universities, and College of Basic Education. The results have shown that the reality of using technology is still away from the dream. The results have been ascribed to two reasons: The first is the little knowledge of using technology in teaching, and the second is that technology is not included in the curriculum.

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Publication Date

Sat Jan 01 2022

Journal Name

Archives Of Civil Engineeringthis Link Is Disabled

Factors affecting time and cost trade-off in multiple construction projects

M.F.

Sawsan Rasheed

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(8)

Publication Date

Thu Jun 29 2017

Journal Name

College Of Islamic Sciences

The general requirement and the disagreement of the fundamentalists in it

The opposite of the fundamentalists

Dr.. Sumaya Tariq Khader

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In The Name of Allah Most Gracious Most Merciful

In this research, I will deal with the significance of the imperative and the disagreement of the fundamentalists in the general requirement by dividing it into an introduction and two sections. , and the appropriate indication.

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Publication Date

Fri Jan 01 2021

Journal Name

Professional Safety

Shedding Light on the Concept of Social Equity in SUSTAINABLE CONSTRUCTION

Ali

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Publication Date

Mon Jan 01 2024

Journal Name

Anais Da Academia Brasileira De Ciências

Morphological study for Accipitrid birds (Accipitridforms, Accipitridae) in Iraq; part two

A part two of Accipitridae Family members that belong to three genera: Circus

Gyps

and Neophron were documented as morphometrics

distribution ranges

and conservation status were reviewed and comprehensively discussed. A total of 29 voucher specimens belong to six species which are conserved in the “Iraq Natural History Research Center and Museum INHM” as follow: Marsh Harrier Circus aeruginosus (Linnaeus

1758)

Hen Harrier Circus cyaneus (Linnaeus

1766)

Montagus Harrier Circus pygargus (Linnaeus

1758)

Pallid Harrier Circus macrourus (Gmelin

1770)

Egyptian vulture Neophron percnopterus (Linnaeus

1758)

and Griffon vulture Gyps fulfus (Hablitz

1783). The results revealed significant criteria about near threatened NT species IUCN and Birdlife International listed as Pallid Harrier Circus macrourus

and Endangered (EN) species as Egyptian vulture Neophron percnopterus globally decreasing population trend.

HIND D.

KHALIDA I.

AFKAR M.

SUHAD Y.

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Publication Date

Sun Apr 02 2023

Journal Name

Journal Of Oral Microbiology

Current concepts in the pathogenesis of periodontitis: from symbiosis to dysbiosis

Ali A.

Firas B.

Ali J.B.

Sarhang S.

Aram

Iain L.C.

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(26)

Publication Date

Sun Dec 11 2022

Journal Name

Journal Of The College Of Basic Education

Breaking the Stereotype Image of Women in Caryl Churchill’s Top Girls

Caryl Churchill

Top Girls

Margret Thatcher

Stereotype

Patriarchy

Class

and Oppression

Enas Jaafar

Maysoon T

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تحلل الورقة الحالية تمثيل كاريل تشرشل للصورة النمطية للمرأة في Top Girls (1982). تُظهر المسرحية كيف وصلت النساء في نضالهن لمحاربة اضطهاد الرجال عبر التاريخ ، إلى مستوى من القوة والحرية يستخدمان للسيطرة على جنسهن دون شفقة. مارلين ، الشخصية المركزية في هذه المسرحية ، هي امرأة تبنت الصفات الذكورية إلى أقصى الحدود. لتسلق سلم النجاح إلى قمته ، تضحي مارلين بطفلها وعائلتها وحبها. كما تعرض المسرحية النساء الصامتات والم

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Publication Date

Thu Mar 03 2022

Journal Name

Trends In Sciences

Computational Study of Charge Density Produced in N2: H2 Plasma Actuator

Plasma actuator

Space charge density

Surface charge density

COMSOL multiphysics

Thamir H.

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Numerical simulation of charge density produced in plasma actuators is dependent upon the development of models dealing with electrical properties. The main aim of this work is to investigate the characteristics surface charge density and space charge density of DBD plasma actuator. A simple design of surface dielectric barrier discharge plasma actuator is used in the study. The discharge gas was N2:H2 mixture with applied voltage equal to 1.5 kV. A theoretical plasma model is used to establish the charge density details. Results show that surface charge density increased in value and spread in width alone the exposed electrode as the voltage increased and reached to the amplitude value.

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Publication Date

Sun Apr 03 2016

Journal Name

Journal Of Educational And Psychological Researches

Psychological stress in unemployed individuals and its association with well being

Psychological stress in unemployed

Asmaa Abd Al Hussein Muhamed

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The aim of this study is to detect the level of psychological stress among unemployed individuals and the level of their wellbeing by finding the correlation between these two variables.

The research sample consisted of (99) people who are currently unemployed and registered at the Ministry of Labor Affairs.

Schafer (1996) scale for psychological stress was used and alongside Ziout's (2012) scale for wellbeing.

The results of the research showed an inverse relation between being unemployed and having wellbeing.

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Publication Date

Sun Feb 25 2018

Journal Name

Advances In Bioresearch

Survey of field crickets (Orthoptera, Grylidae) in different regions of Iraq

Hanaa

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