Table of content

Iraqi Journal of Applied Physics

المجلة العراقية للفيزياء التطبيقية

ISSN: 18132065 23091673
Publisher: iraqi society for alternative and renewable energy sources and techniques
Faculty:
Language: English

This journal is Open Access

About

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, Computers Networks and Applications.

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Contact info

P. O. Box 55259,
Baghdad 12001,
Iraq
Website: www.iraqiphysicsjournal.com
Email: admin@iraqiphysicsjournal.com
Email: editor_ijap@yahoo.co.uk

Table of content: 2013 volume:9 issue:4

Article
Iraqi Journal of Applied Physics
المجلة العراقية للفيزياء التطبيقية

Authors: Editorial Board
Pages: 1-2
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Abstract

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, and Solid State Physics & Applications.

Keywords

Applied Physics


Article
Software Defined Radio (SDR) Methodology Based Multi–Core Software Platform

Authors: E.H. Ibrahem --- N.Q. Mohammed --- H.M. Dawood
Pages: 3-9
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Abstract

This study considers and proposes the methodology for implementing a partially reconfigurable system as well as the basic infrastructures of the system requirements. This research methodology explores the use of Simulink®, Xilinx System Generator® and Lyrtech® for the implementation of Software Defined Radio (SDR), which is based on the digital transceiver design in the digital signal-processing module. The Design Methodology presents the proposed digital transceiver on a SFF SDR platform in three directions. The first approach, which is the simulation level, uses the Xilinx System Generator block and Lyrtech block. The second approach presents in detail the Hardware-in-the-loop (HIL) co-simulation design implementation on the Field-Programmable Gate Array (FPGA) hardware-modeling tool. The third approach describes the design in detail by using two task-based DSP and FPGA hardware. Design decisions such as dividing the tasks between FPGA and DSP, and choosing the appropriate methods to implement each block are made in order to optimize the usage of the resources on hardware. The modem is simulated using Simulink and System Generator for DSP to implement the FPGA blocks. Simulink and Real Time Workshop (RTW) are used to make individual modules for the DSP. TI Code Composer Studio compiles the DSP subsystems and combines different DSP modules.


Article
International Measurement Confederation IMEKO 10

Pages: 10-10
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Abstract

International Measurement Confederation IMEKO 10


Article
Non-ablative Tattoo Removal Using Fundamental and Second Harmonic Nd:YAG Laser (Histological Observations)

Authors: T.A.T. Ibrahim --- S.I. Hassan --- W.K. Hamoudi
Pages: 11-16
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Abstract

In laser tattoo removal, selective photothermolysis permits the selective destruction of tattoo pigment molecules with very limited damage to surrounding tissue. To maximize the breakup of tattoo ink, the energy density (fluence), wave-length, and pulse duration of the laser need to be optimized. White domesticated Albino rabbits were used in our trials. Each received simultaneous injections of a color pigment tattoo while under general anesthesia, followed by sessions of Q-switched Nd: YAG (1064 and 532 nm), (100-800) mJ, and 5 and10 ns laser pulses for tattoo removal. The spectroscopic properties of black, brown, green, blue and red tattoo inks were studied in our trial. Laser fluence damage threshold of tattooed tissue was also investigated in order to select the optimized conditions for obtaining scar-free skin following tattoo removal. A histological observation of laser treated tissue, before and after laser treatment, was then performed using optical microscopy. Histological images of the biopsies taken after thirty days of laser treatment of both black and brown tattoos showed a marked reduction in pigment granules’ size, with no appearance of hyperplasia, inflammatory cells, or vacuolations. Our results suggest that the coexistence of macrophages is responsible for actively phagocytosing the laser-dispersed tattoo pigment. Skin biopsies have demonstrated local redistribution of ink granules. In addition to shuttering tattoo particles, the laser created some vacuolations, adding extra mechanical damage to the pigment.


Article
First Principle Calculation of Pressure-Induced Phase Transition and Band Structure of Gallium Phosphide

Authors: Kh. Kabita et al.
Pages: 17-20
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Abstract

A first principle study of the electronic, structural and phase transition of the III-V binary compound semiconductor gallium phosphide (GaP) is performed under the framework of density functional theory (DFT). Structural transformation from the zinc-blende (ZB) to rocksalt (RS) structure is observed at a pressure of about 21.9 GPa and the dependence of the volume decrease of ZB to RS structure at the transition pressure is 14.11% . The variation of the energy band gap, elastic constants and debye’s temperature with pressure are also obtained successfully. Our results are found to be in consistent with other experimental and theoretical results.


Article
Wide Range Speed Control Based on Field Oriented Control of Permanent Magnet Synchronous Motor

Authors: E.K. Hamza
Pages: 21-24
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Abstract

This paper presents a wide speed range of a permanent magnet synchronous motor based on Field oriented control strategy. Rotor position estimation using model reference adaptive system method for interior permanent magnet Drive without using a mechanical sensor is illustrated considering the effects of cross-saturation between the d and q axes. The cross saturation between d and q axes has been calculated by finite-element analysis. The inductance measurement regards the cross saturation which is used to obtain the suitable id - characteristics in base and flux weakening regions. The simulation results show that rotor position estimation error accuracy was improved. Various dynamic conditions have been investigated.


Article
Density of Defect States in Se90Sb10-xAgx Glassy Alloys

Authors: A. Kumar --- R.K. Shukla --- A. Kumar
Pages: 25-28
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Abstract

The present paper reports the study of density of defect states in bulk glassy alloys of Se90Sb10-xAgx (where x = 0, 2, 4, 6 and 8). Space charge limited conduction technique is used for this purpose. I-V characteristics have been measured at various fixed temperatures in the range 300 K to 380 K. An ohmic behavior is observed at low electric fields upto 102 V/cm. However, superohmic behavior is observed at high electric fields (103 - 104 V/cm). High-field conduction theory of space charge limited conduction for uniform distribution of localized states in the mobility gap fits well with the experimental data. Using this theory, the density of defect states (DOS) near Fermi level is calculated for all the glassy alloys. A maxima is observed at 4 at. % of Ag, which is explained in terms of average co-ordination number.


Article
Improvement of Wound Healing in Rabbit Skin by Low Level Polarized Laser Light

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Abstract

Living cells require energy to perform biological processes and functions. Low level lasers stimulate the basic energy processes in the mitochondria and help the production of Adenosine Tri-Phosphate (ATP)–the primary biological cell energy source needed for such activities. Full-thickness, parallel wounds in four domesticated Albino rabbits were surgically induced. The control wounds were left without laser treatment, whereas other wounds received daily laser treatments using laser energy fluence of 5 J/cm2 for rabbit 1; 4.5 J/cm2 for rabbits 2 and 3; and 3.5 J/cm2 for rabbit 4. Various polarization directions of the 660 nm low level (5 mW) diode laser were used to heal the induced wounds. The laser beam’s plane of polarization with respect to the wound line played an important role in the healing results. The fastest healing was completed in 16 day-time using a parallel orientation of polarized laser beam, while the perpendicular orientation of the polarized laser beam healed at lower rate, and the 45o polarization orientation of the laser beam gave poorest healing results. Laser photons of the parallel orientation of polarization interact with a chromophore located within the tissue. Laser illumination of wound can raise the energy of the cells and generate new collagen and fibroblast tissues, because electron excitation and de-excitation are vital in the mitochondrial respiratory chain. Wounds illuminated with a polarized laser in a plane parallel (Lll) to the wound line built new cells which filled the wound at a very fast rate and in a more homogeneous manner. The transverse orientation (L┴) of the laser beam helped filling the cells but stacking them in the orthogonal direction which required longer healing time.


Article
Subject Index 2005-2013

Authors: Editorial Board
Pages: 33-36
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Abstract

Keywords


Article
Author Index 2005-2013

Authors: Editorial Board
Pages: 37-40
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Article
IJAP Copyright Form 2013

Authors: Editorial Board
Pages: 41-41
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Abstract

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, and Solid State Physics & Applications.

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Article
Iraqi Journal of Applied Physics (Contents)

Authors: Editorial Board
Pages: 42-42
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Abstract

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, and Solid State Physics & Applications.

Keywords

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