On the Performance of a Microstrip Antenna Based UC-PBG Structures for UHF RFID Readers
On the Performance of a Microstrip Antenna Based UC-PBG Structures for UHF RFID Readers

Ali S. Jalal; Marwa H. Jwair

Volume 36, 5A , May 2018, Page 480-487

https://doi.org/10.30684/etj.36.5A.1

Abstract
  Microstrip antennas suffer from low gain bandwidth product due to surface wave effects and aperture diffractions that limit their use for long-range communications. On top of that, ...  Read More ...
Select the Best Cyclic Prefix for Various Effective Area in an O-OFDM System
Select the Best Cyclic Prefix for Various Effective Area in an O-OFDM System

Sinan Majid; Razi J. Al Azawi; Rend N. Alrays

Volume 36, 5A , May 2018, Page 488-492

https://doi.org/10.30684/etj.36.5A.2

Abstract
  In the past few years, the Optical Orthogonal Frequency Division Multiplexing (O-OFDM) has been deliberated as a promising future in high data transmission technology. OFDM is a special ...  Read More ...
Experimental Study of Mechanical Properties of Type Linear Low Density Polyethylene and Mold Design
Experimental Study of Mechanical Properties of Type Linear Low Density Polyethylene and Mold Design

Samir A. Amin; Ali Y. Hassan

Volume 36, 5A , May 2018, Page 493-499

https://doi.org/10.30684/etj.36.5A.3

Abstract
  In general, the manufacture of plastic materials is commonly in the world due to their applications. Plastic is light weight, cheap, and able to be used in different industries, for ...  Read More ...
Studying the Efficiency of Lime-Soda Sinter Process to Extract Alumina from Colored Kaolinite Ores Using Factorial Technique of Design of Experiments
Studying the Efficiency of Lime-Soda Sinter Process to Extract Alumina from Colored Kaolinite Ores Using Factorial Technique of Design of Experiments

Hijran Z. Toama; Abdul-Wahab A. Al-Ajeel; Ajheen H. Jumaah

Volume 36, 5A , May 2018, Page 500-508

https://doi.org/10.30684/etj.36.5A.4

Abstract
  As the increasing demand for alumina in recent years with the result diminishing reserve of bauxite, the need to secure a domestic raw material base is driving research in new technologies ...  Read More ...
Specific Absorption Rate (SAR) Simulated for Square Patch Antenna of Head Tissues
Specific Absorption Rate (SAR) Simulated for Square Patch Antenna of Head Tissues

Ahmed M. Ahmed

Volume 36, 5A , May 2018, Page 209-513

https://doi.org/10.30684/etj.36.5A.5

Abstract
  Square patch antennas (SPA) are widely used today is in wireless communication systems, mainly with a popular frequency of 2.4 GHz. Wireless devices is the main source of electromagnetic ...  Read More ...
DCF with FBG for Dispersion Compensation in Optical Fiber Link at Various Bit Rates using Duobinary Modulation Format
DCF with FBG for Dispersion Compensation in Optical Fiber Link at Various Bit Rates using Duobinary Modulation Format

Hussein A. Mahmood

Volume 36, 5A , May 2018, Page 514-519

https://doi.org/10.30684/etj.36.5A.6

Abstract
  Dispersion is one of the very important parameters that effect on the performance of optical fiber communication systems. It causes pulse broadening, limiting of transmission distance ...  Read More ...
Investigate the Effect of Different Kinds of Discontinuous Fibers on the Mechanical Properties of Epoxy Matrix Composite Materials
Investigate the Effect of Different Kinds of Discontinuous Fibers on the Mechanical Properties of Epoxy Matrix Composite Materials

Ahmed Muhammad; Ibrahim A. Atiyah; Hamza M. Kamal; Ahmed M. Al-Mukhtar

Volume 36, 5A , May 2018, Page 520-522

https://doi.org/10.30684/etj.36.5A.7

Abstract
  The composite manufacturing has been a wide variety of applications. The low density, stiffness, and weight to strength ratio giving these materials significant mechanical properties ...  Read More ...
Stability Analysis of an Earth Dam Using GEO-SLOPE Model under Different Soil Conditions
Stability Analysis of an Earth Dam Using GEO-SLOPE Model under Different Soil Conditions

Usama R. Mishal; Thair S. Khayyun

Volume 36, 5A , May 2018, Page 523-532

https://doi.org/10.30684/etj.36.5A.8

Abstract
  Numerical models are used to check the stability of earth dams and to simulate the effects of all the parameters, which affect its safety. The physical properties of the materials used ...  Read More ...
Applying Fuzzy Multi-Criteria DecisionMaking and Different Techniques to Solve Multi Objective Project Planning
Applying Fuzzy Multi-Criteria DecisionMaking and Different Techniques to Solve Multi Objective Project Planning

Mahmoud A. Mahmoud; Luma A. AL-Kindi; Haider N. Hady

Volume 36, 5A , May 2018, Page 533-545

https://doi.org/10.30684/etj.36.5A.9

Abstract
  For achieving successful projects, effective planning and scheduling should be taken into consideration besides reaching an accepted balance among project objectives. As a result, this ...  Read More ...
Beneficiation of Low Grade Calcium Bentonite Claystone
Beneficiation of Low Grade Calcium Bentonite Claystone

Hijran Z. Toama; Abdul-Wahab A. Al-Ajeel; Ekhlas M. Abdullah

Volume 36, 5A , May 2018, Page 546-554

https://doi.org/10.30684/etj.36.5A.10

Abstract
  The beneficiation of Ca-bentonite claystone has been studied with dispersion sedimentation technique using polyionic salts as dispersant.The claystone is located in the Western Desert ...  Read More ...
Developing a Branch and Bound Algorithm for Cell Formation and Group Scheduling
Developing a Branch and Bound Algorithm for Cell Formation and Group Scheduling

Amjad B. Abdulghafour; Dhulfiqar H. Dhayef

Volume 36, 5A , May 2018, Page 555-563

https://doi.org/10.30684/etj.36.5A.11

Abstract
  Scheduling models for groups of parts have become more widely used in the industrial companies because of intensification of competition among them to get optimization in the delivery ...  Read More ...
Investigation of Microstructure and Chemical Analysis Along Weldments AISI 410 MSS/ER Nicrmo-3
Investigation of Microstructure and Chemical Analysis Along Weldments AISI 410 MSS/ER Nicrmo-3

Emad S Al-Hassani

Volume 36, 5A , May 2018, Page 564-573

https://doi.org/10.30684/etj.36.5A.12

Abstract
  In this research work the weldability of AISI 410 martensitic stainless steels (SS) LP-blades of steam turbine joined by GTAW (gas tungsten arc welding); inconel-3 filler wire was investigated. ...  Read More ...
Proposed Design Against High-Cycle Fatigue Failure of Metallic Beams Using Lamination
Proposed Design Against High-Cycle Fatigue Failure of Metallic Beams Using Lamination

Riyah N. Kiter

Volume 36, 5A , May 2018, Page 574-581

https://doi.org/10.30684/etj.36.5A.13

Abstract
  Fatigue analysis helps in predicting life of the component and seeks improvements of the whole process in design phase. Efforts are continually made to combat the fatigue phenomenon, ...  Read More ...
Effects of Enhancement P+ Layer on IGBT Operation
Effects of Enhancement P+ Layer on IGBT Operation

Inmar N. Ghazi; Hayder T. Assafli; Wail Y. Nassir

Volume 36, 5A , May 2018, Page 582-585

https://doi.org/10.30684/etj.36.5A.14

Abstract
  IGBT (Insulated-gate bipolar transistor), is used widely in high voltage applications, it is very important to realize the doping profile in order to understand the design and the electrical ...  Read More ...
Enhancement of Thermal Storage Properties of Phase Change Material by Using Metallic Swarf
Enhancement of Thermal Storage Properties of Phase Change Material by Using Metallic Swarf

Abdulkareem Khudhair; Falah Hatem; Dher Mohammed Ridha

Volume 36, 5A , May 2018, Page 586-595

https://doi.org/10.30684/etj.36.5A.15

Abstract
  The phase change materials (PCM) is commonly used for storage heat as a latent heat, the main disadvantage of this method is slow response time during charging and discharging; this ...  Read More ...