Table of content

Almuthanna Journal of Pure Science (MJPS)

مجلة المثنى للعلوم الصرفة

ISSN: 22263284
Publisher: Al-Muthanna University
Faculty: Science
Language: Arabic and English

This journal is Open Access

About

Refereed Scientific Journal Published by
College of Science , AL-Muthanna University
Date od first issue (September 2012)
No. of issue per year(2)

Loading...
Contact info

Phone Number : 009647801354753

E_Mail : mjps@muthjps.com

Table of content: 2018 volume:5 issue:1

Article
Effect Of Thermal Annealing On The Optical Properties Of Thin Films Of Polymer Blend (PMMA:PVC:PS)

Loading...
Loading...
Abstract

In this paper, we report upon preparation and optical properties of the polymer blend (50%PMMA:25%PVC:25%PS) thin films. The thin films have been prepared with specific ratios using the casting technique at normal weather conditions. The films were subjected to heat treatment in varying temperatures for three hours. The results showed that increase thermal annealing temperature leads to decrease values of the direct and indirect energy gap, but increase the extinction coefficient and optical conductivity. The refractive index, real and imaginary dielectric constants showed a heterogeneous behaviour. Thermal annealing by 80 oC and up leads to deformation the thin films.


Article
Synthesis and Optical Properties of Polystyrene Doped with DCM Thin Films

Authors: Akeel Shaker Tuhaiwer
Pages:
Loading...
Loading...
Abstract

In the present work Polystyrene (PS) polymer doped with DCM laser dye thin films have been prepared on glass substrate using casting method. The final samples of PS doped with DCM thin films were treated with different annealing temperatures at (30, 40, 50, 60) oC. Optical absorption and transmission spectra of the prepared thin films were recorded using UV-VIS double beam spectrometer in the wavelength range from 190 to 1100 nm. The results shown that the allowed direct electronic transitions energy gap increased from 2.08 up to 2.25e.V as the temperature increasing from 30 to 60oC, whereas the allowed indirect electronic transition energy gap increase from 2.02 up to 2.17 eV as the temperature increase from 30 to 60oC. The effect of temperature on the optical properties such as Urbach’s energy, Refractive index, Extinction coefficient, Critical angle, Brewster angle, and Finesse coefficient of PS doped with DCM thin films also studied in this work.

Keywords

Optical properties --- PS --- DCM --- thin films --- cast method


Article
Nuclear Structure of the (144 Ba, 146 Ce 148 Nd )by using the Interacting boson Approximation (IBA-2)

Loading...
Loading...
Abstract

The Interacting Boson Hamiltonian (IBA-2) to reproduce energy spectrum of isotones is tested The calculated ratio has been suggested that these nuclei are part of O(6) group symmetry. Reduced electric quadruple transitions between states of and magnetic dipole between states of , are calculated. The mixing ratios for transitions between are evaluated as well. All the calculated results have been compared with available experimental data and satisfactory results are obtained.


Article
The Effects of Additive TiO2 Nanoparticles on the Optical properties of DCM Doped with PVC Thin Films

Loading...
Loading...
Abstract

In this work thin films containing laser dye (DCM) doped with (PVC) were prepared using casting method. Titania (TiO2) nanoparticles also were synthesized using sol-gel technique. Different titania nanoparticle densities (0.882×1020, 1.765×1020, 2.648×1020 and 3.530×1020 cm-3) were co-doping with dye doped polymer to study the effect of this addition on the optical properties and electronic transition energy gaps in cases of both direct and indirect transitions, Absorbance spectra were measured using Spectrophotometer. Absorption and extinction coefficients as well as the refractive indices have been obtained the spectra of absorbance at the strong absorption region. It was observed from results that the allowed direct electronic transitions energy gap was decreasing from 2.22 to 2.175e.V with the increasing of titania nanoparticles density and the allowed indirect electronic transition energy gap decreasing from 2.19 to 2.13e.V.


Article
On the Two Machine Permutation Flowshop Scheduling Problems Using Variable Neighborhood Search Algorithms

Loading...
Loading...
Abstract

This paper considers the two machine permutation flow shop scheduling problem PFSSP. We study some special cases of the problem


Article
Study the Effect of Immobilization on Electrostatic Potential for Methyl Orange Dye

Loading...
Loading...
Abstract

In the current study, the effect of the immobilization on electrostatic potential, pH and the absorbance of aqueous solutions of methyl orange that was immobilized on a modified chitosan polymer by glass wool were studied. It was found that the values of these parameters of the supported methyl orange are increased compared to unsupported samples. Furthermore, the electrostatic potential of the supported methyl orange is investigated in the presence of an aqueous solutions of NaCl, where showed the value of the electrostatic potential is raised With increasing ionic strength of the sodium chloride solution and a decrease in the value of pKa to the methyl orange dye after immobilization while the results are inversely before immobilization methyl orange on a modified chitosan polymer by glass wool.


Article
Data Security Using Homomorphic Encryption for Cloud Based Medical Record Management System

Loading...
Loading...
Abstract

Homomorphic encryption technique is latest development in the field of data encryption. The replacement algorithm is taking part in this technique. In this paper, this technique is used for security of patient’s medical record on cloud. Proposed technique besides data security, stores and retrieves cloud data is very fast. Paper proposes a model and encryption techniques with analysis before conclusion.

Keywords

Table of content: volume:5 issue:1