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Article
Structural and Optical properties of Polymers(PVA / PVP ) doped with V2O5 composites films

Author: Ghuzlan S. Ahmed
Journal: Ibn Al-Haitham Journal For Pure And Applied Science مجلة ابن الهيثم للعلوم الصرفة والتطبيقية ISSN: P16094042/ E25213407 Year: 2017 Volume: 30 Issue: 2 Pages: 16-24
Publisher: Baghdad University جامعة بغداد

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Abstract

Study the effect of doping V2O5 on polymers poly vinyl alcohol ( PVA), poly vinyl pyrrolidone (PVP) on the optical and structural properties for film prepared by using Casting method at thickness( 300±20)nm ,All the materials dissolved in distilled water by magnetic mixer for one hour .The optical parameters measured by using UV-VIS spectrometer ,and the structural parameters measured by X-ray diffraction .when measured the energy gap found that the value was decreases from 4.6 eV to 2.98 eV with doping .The refractive index ,extinction coefficient ,absorption coefficient ,real and imaginary dielectric constants of (PVA/PVP) are increasing with doping by V2O5 and with increase the ratio of dop


Article
Study The Effect of Thickness on Zno Thin Films prepared by Spray Pyrolysis Method
دراسة اختلاف السُمك لأغشية أوكسد الزنك المحضرة بطريقة الرش الكيميائي

Author: Ghuzlan S. Ahmed غزلان سرحان احمد
Journal: Journal of university of Anbar for Pure science مجلة جامعة الانبار للعلوم الصرفة ISSN: ISSN: 19918941 Year: 2013 Volume: 7 Issue: 2
Publisher: University of Anbar جامعة الانبار

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Abstract

Zinc oxide thin films ZnO were prepared by spray pyrolysis method with different thickness from(247.35,342.4,437.6)nm onto glass substrate at 350◦c .The concentration is 0.3 Molary,X-ray diffraction patterns confirm the proper phase formation of the material.The optical properties of ZnO were determined through the optical transmission method using ultraviolet-visible spectrophotometer with wave length (300-1100)nm. The energy gap increases with the increase of thin film thickness and ranges from (3.0,3.2,3.25)eV.

حُضرت اغشية رقيقة لأوكسيد الزنك المحضرة بطريقة الرش الكيميائي ولسُمك مختلف منهوبمعدل رش (5mنانومتر على قواعد زجاجية بدرجة حرارة 350, 437, 247وبتركيز 03مولاري .ان حيود الاشعة السينية بين بان الغشاء ذو تركيب متعدد التبلور .حُددت الخواص البصرية للاغشية عن طريق النفاذية البصرية بأستعمال مطيافضمن الاطوال الموجية(300-1100). Ultra Violet –Visible


Article
Determination of Radon Concentrations in Soil Around Al-Tuwaitha Site Using CR-39 Detector

Authors: Khalid H. Mahdi --- Auday T. Subhi --- Najlaa R. Sharif --- Ghuzlan S. Ahmed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 2 Part (C) Pages: 108-112
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

In this work radon concentration in 37 soil samples collectedfrom 17 regions surround the (Al Tuwaitha) were measured by usingsolid-state nuclear track detector (SSNTD.s) CR-39 with naturalexposure of one month, and by comparison with standard samples. Theradon concentration in the soil samples was about (9.583 ± 0.369 ـــ28.029 ± 0.631) Bq/m3 in locations one (Rotate Salman) and eight (Anarea agricultural near high-voltage towers) respectively, with rate of(20.939 ± 0.541) Bq/m3. The specific activity of radium (Ra) dissolvedduring generate radon were ranging between (3.37 – 9.857) Bq.kg-1,with rate of (7.393) Bq.kg-1, surface emission of radon gas rate in thesoil was found between (0.144 – 0.422 Bq/m2.h) with rate of (0.314Bq/m2.h) and their mass emission of radon gas rate has the highestvalue of (0.016 Bq / kg . h) and lower value (0.005 Bq / kg . h) withrate of (0.012 Bq / kg . h. These results are within the acceptable limitthat recorded by UNECEAR and ICRP

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