Research Paper
ANSYS-Based Structural Analysis Study of Elevated Spherical Tank Exposed to Earthquake
ANSYS-Based Structural Analysis Study of Elevated Spherical Tank Exposed to Earthquake

Mahmoud Saleh Al-Khafaji; Ahlam S. Mohammed; Muna A. Salman

Volume 39, Issue 6 , June 2021, Page 870-883

https://doi.org/10.30684/etj.v39i6.460

Abstract
  Damage of elevated tanks during earthquakes can jeopardize the supply of drinking water and causes significant economic losses. Therefore, seismic analysis of tanks containing liquids ...  Read More ...
Research Paper
Effect of Hollow Shape on the Behavior of Reinforced Self-Compacting Concrete Slender Column Under Eccentric Loading
Effect of Hollow Shape on the Behavior of Reinforced Self-Compacting Concrete Slender Column Under Eccentric Loading

Maha Ghaddar

Volume 39, Issue 6 , June 2021, Page 884-892

https://doi.org/10.30684/etj.v39i6.1504

Abstract
  Results of testing reinforced self-compacted concrete slender columns having longitudinal holes concealing PVC pipe in their cross sections under axial compression load and uniaxial ...  Read More ...
Research Paper
Indices-Based Evaluation of Spatiotemporal Distribution of Drought Within Derbendkhan Dam Watershed
Indices-Based Evaluation of Spatiotemporal Distribution of Drought Within Derbendkhan Dam Watershed

Mahmoud Saleh Al-Khafaji; Rusul A.H. Al-Ameri

Volume 39, Issue 6 , June 2021, Page 893-914

https://doi.org/10.30684/etj.v39i6.1802

Abstract
  Drought is one of the most significant natural disasters in Iraq. It has a strong impact on the water resources in Iraq. Consequently, it causes massive environmental damage, economic ...  Read More ...
Research Paper
Nonlinear Finite Element Analysis of the Seismic Retrofitting of Existing Buildings
Nonlinear Finite Element Analysis of the Seismic Retrofitting of Existing Buildings

Shirin A. Abdulla; Mohammed J. Hamood; Mohammed A.E. Al Hamdani

Volume 39, Issue 6 , June 2021, Page 915-927

https://doi.org/10.30684/etj.v39i6.1834

Abstract
  Finite Element Analysis (FEA) is a helpful tool for finding solutions to civil engineering problems. In this paper, the numerical analysis was performed by simulating an experimental ...  Read More ...
Research Paper
Effect of Input Parameters on SR and MRR for Tool Steel AISI L2 By Electric Discharge Machine (EDM)
Effect of Input Parameters on SR and MRR for Tool Steel AISI L2 By Electric Discharge Machine (EDM)

Shukry H. Aghdeab; raead rashed; Tahseen M. Salman

Volume 39, Issue 6 , June 2021, Page 928-935

https://doi.org/10.30684/etj.v39i6.1849

Abstract
  Electric discharge machine (EDM) or may be call electric spark machine is one of the most important cutting process or manufacturing process because it gives high accurate dimension ...  Read More ...
Research Paper
Study of CuS Thin Films Deposited by PLD Simulated for Prism Based SPR Sensor
Study of CuS Thin Films Deposited by PLD Simulated for Prism Based SPR Sensor

Isaac S. Najm; Ali Alwahib; Suad M. Kadhim

Volume 39, Issue 6 , June 2021, Page 936-945

https://doi.org/10.30684/etj.v39i6.1973

Abstract
  Copper Sulfide CuS thin film was prepared using pulsed laser deposition PLD technique and characterized by X-ray and SEM. The optical, structural, and morphological properties are examined ...  Read More ...
Research Paper
A Desirability Function for Evaluation of Corrosion Behavior for Nanocoated- Steel Using Electroless Technique
A Desirability Function for Evaluation of Corrosion Behavior for Nanocoated- Steel Using Electroless Technique

Muroog M. Shinyar; Abbas Kh. Hussein; Laith K. Abbas

Volume 39, Issue 6 , June 2021, Page 946-955

https://doi.org/10.30684/etj.v39i6.2009

Abstract
  The current work is conducting an experimental investigation into the effect of those technical parameters, called nanomaterial, bath temperature and plating time on the micro-hardness ...  Read More ...
Research Paper
The Effect of the Waste of Materials and Carbon Nanotube on the Concrete Incorporated with Steel Fibers
The Effect of the Waste of Materials and Carbon Nanotube on the Concrete Incorporated with Steel Fibers

Mayada H. Saleem; Farhad. M. Othman; Alla A. Abdul-Hameed

Volume 39, Issue 6 , June 2021, Page 956-964

https://doi.org/10.30684/etj.v39i6.2018

Abstract
  The addition of agricultural and industrial solid wastes and nanomaterials to concrete combined with steel fibers to improve the mechanical and electrical properties of concrete was ...  Read More ...
Research Paper
Outdoor Localization in Mobile Robot with 3D LiDAR Based on Principal Component Analysis and K-Nearest Neighbors Algorithm
Outdoor Localization in Mobile Robot with 3D LiDAR Based on Principal Component Analysis and K-Nearest Neighbors Algorithm

Hanan A. Atiyah; Mohammed Y. Y.

Volume 39, Issue 6 , June 2021, Page 965-976

https://doi.org/10.30684/etj.v39i6.2032

Abstract
  Localization is one of the potential challenges for a mobile robot. Due to the inaccuracy of GPS systems in determining the location of the moving robot alongside weathering effects ...  Read More ...
Research Paper
An Experimental Study of Porous Hydroxyapatite Scaffold Bioactivity in Biomedical Applications
An Experimental Study of Porous Hydroxyapatite Scaffold Bioactivity in Biomedical Applications

Auday A. Mehatlaf; Alaa A. Atiyah; Saad B. H. Farid

Volume 39, Issue 6 , June 2021, Page 977-985

https://doi.org/10.30684/etj.v39i6.2059

Abstract
  Hydroxyapatite is one of the most bioactive materials used in tissue engineering due to its excellent biocompatibility and chemical composition which is equivalent to the mineral element ...  Read More ...
Research Paper
Investigating The Effect of Magnetite (Fe3O4) Nanoparticles on Mechanical Properties of Epoxy Resin
Investigating The Effect of Magnetite (Fe3O4) Nanoparticles on Mechanical Properties of Epoxy Resin

Ehab Kaadhm; Khansaa D. Salman; Ahameed Hameed Raja

Volume 39, Issue 6 , June 2021, Page 986-995

https://doi.org/10.30684/etj.v39i6.2063

Abstract
  In this paper, study the effects of magnetite nanomaterial Fe3O4 on the mechanical properties of epoxy. Dispersion of Fe3O4 nanoparticles in the epoxy resin was performed ...  Read More ...
Research Paper
Optimized PID Control of Quadrotor System Using Extremum Seeking Algorithm
Optimized PID Control of Quadrotor System Using Extremum Seeking Algorithm

Abdullah N. Muhsen; Safanah M. Raafat

Volume 39, Issue 6 , June 2021, Page 996-1010

https://doi.org/10.30684/etj.v39i6.1850

Abstract
  This paper presents the development of an automatic tuning of conventional PI-D controllers for Quadrotor system. The most critical problem of tuning the parameters of the PID, is that ...  Read More ...
Research Paper
Preparation of Nickel Oxide Microparticles by Pulsed Laser Ablation and Application to Gas Sensors
Preparation of Nickel Oxide Microparticles by Pulsed Laser Ablation and Application to Gas Sensors

Nedal A. Hussain; Luma Y. Abbas; Lamyaa A. Latif

Volume 39, Issue 6 , June 2021, Page 1011-1018

https://doi.org/10.30684/etj.v39i6.1593

Abstract
  Nickel oxide (NiO) microparticles were synthesized by pulsed laser ablation in double deionized water and intensively studied using Nd:YAG laser. The obtained sample was examined by ...  Read More ...
Research Paper
Wheelchair Movement Based on Convolution Neural Network
Wheelchair Movement Based on Convolution Neural Network

Maisaa Kodher; Jammila H. Saud; Hani S. Hassan

Volume 39, Issue 6 , June 2021, Page 1019-1030

https://doi.org/10.30684/etj.v39i6.1615

Abstract
  This paper intends to develop a methodology for helping amputees and crippled people old, by ongoing voice direction and association between patient and personal computer (PC) where ...  Read More ...
Research Paper
Real-time Hand Gesture Extraction Using Python Programming Language Facilities
Real-time Hand Gesture Extraction Using Python Programming Language Facilities

Azher A. Fahad; Hassan J. Hassan; Salma H. Abdullah

Volume 39, Issue 6 , June 2021, Page 1031-1040

https://doi.org/10.30684/etj.v39i6.1619

Abstract
  Hand gesture recognition is one of communication in which used bodily behavior to transmit several messages. This paper aims to detect hand gestures with the mobile device camera and ...  Read More ...