Chemical Precipitation method for Sulphate Removal from Treated Wastewater of Al-Doura Refinery
Chemical Precipitation method for Sulphate Removal from Treated Wastewater of Al-Doura Refinery

Aumar Alnakeeb; Rana Mohammed Rasheed

Volume 39, 3A , March 2021, Page 338-354

https://doi.org/10.30684/etj.v39i3A.503

Abstract
  Wastewater treatment by Wastewater Treatment Plant, named (INGECO) in Doura refinery suffers from the elevated level of sulphate ion concentrations compared to the recommended EPA [14] ...  Read More ...
Design of Adaptive Sliding Mode Controller for Uncertain Pendulum System
Design of Adaptive Sliding Mode Controller for Uncertain Pendulum System

Dina H. Tohma; Ahmed K. Hamoudi

Volume 39, 3A , March 2021, Page 355-369

https://doi.org/10.30684/etj.v39i3A.1546

Abstract
  This work aims to study and apply the adaptive sliding mode controller (ASMC) for the pendulum system with the existence of the parameters uncertainty, external disturbances, and coulomb ...  Read More ...
Backstepping Control Strategy for Overhead Crane System
Backstepping Control Strategy for Overhead Crane System

Mohammed Y. Khudhair; Mohammed Y. Hassan; Saleem K. Kadhim

Volume 39, 3A , March 2021, Page 370-381

https://doi.org/10.30684/etj.v39i3A.1738

Abstract
  Swinging on the shifted load by overhead crane is one of the main problems that all researchers suffer from. In addition, the crane system is a nonlinear and under-actuated system. ...  Read More ...
(Polyphenyl Sulfone - Polyether Sulfone) Blending to Performance Flat Sheet Membrane to Remove Some Heavy and Radioactive Elements from Phosphogypsum Waste
(Polyphenyl Sulfone - Polyether Sulfone) Blending to Performance Flat Sheet Membrane to Remove Some Heavy and Radioactive Elements from Phosphogypsum Waste

Waleed T.Rashid; Israa A. Alkadir; Moayyed G. Jalhoom; Khalid T. Rashid

Volume 39, 3A , March 2021, Page 382-393

https://doi.org/10.30684/etj.v39i3A.1762

Abstract
  In this research, the traditional version of the phase inversion method was used to fabricate a flat sheet of a blended membrane. The method was involved using a polymer that blends ...  Read More ...
Design and Performance Analysis of Permanent Magnet Synchronous Motor for Electric Vehicles Application
Design and Performance Analysis of Permanent Magnet Synchronous Motor for Electric Vehicles Application

Mustafa Y. Bdewi; Ahmed M. Mohammed; Mohammed M. Ezzaldean

Volume 39, 3A , March 2021, Page 394-406

https://doi.org/10.30684/etj.v39i3A.1765

Abstract
  In electrical vehicle applications, power density plays a significant role in improving machine performance. The main objective of this paper is to design and analyze the performance ...  Read More ...
Effect of Oil – Corrosion on Tensile and Fatigue S-N Curve Properties of AA6061-T6
Effect of Oil – Corrosion on Tensile and Fatigue S-N Curve Properties of AA6061-T6

Hussain J.M. Al-Alkawi; Ghgada A. Aziz; Shmoos R. Mazel

Volume 39, 3A , March 2021, Page 407-414

https://doi.org/10.30684/etj.v39i3A.298

Abstract
  The present study described the effect of shot peening on mechanical properties and rotating corrosion –fatigue behavior (strength and life) of AA6061-T6. Ultimate tensile strength ...  Read More ...
Experimental Study and Numerical Simulation of Plane Steel Frame with Rubberized Connecting Technology Subjected to Seismic Effect
Experimental Study and Numerical Simulation of Plane Steel Frame with Rubberized Connecting Technology Subjected to Seismic Effect

Suhaib J. Ali; Amer M. Ibrahim; Sarmad Shafeeq

Volume 39, 3A , March 2021, Page 415-425

https://doi.org/10.30684/etj.v39i3A.1500

Abstract
  This paper represents experimental and numerical study the behavior of the rubberized steel frame connections. One single-bay, one-story without elastic buckling are cyclically tested. ...  Read More ...
Nonlinear Finite Element Analysis of Fiber Reinforced Concrete Slabs
Nonlinear Finite Element Analysis of Fiber Reinforced Concrete Slabs

Saad A. Al-Taan; Ayad A. Abdul-Razzak

Volume 39, 3A , March 2021, Page 426-439

https://doi.org/10.30684/etj.v39i3A.1641

Abstract
  This paper presents a study on the behavior of fiber reinforced concrete slabs using finite element analysis. A previously published finite element program is used for the nonlinear ...  Read More ...
Estimation of the Components of Residential Solid Waste in Baqubah City and their Generation Rate
Estimation of the Components of Residential Solid Waste in Baqubah City and their Generation Rate

Esraa Q. Shehab; Zainab B. Mohammed; Mohammed Y. Fattah

Volume 39, 3A , March 2021, Page 440-452

https://doi.org/10.30684/etj.v39i3A.1777

Abstract
  Municipal solid waste is of variable, non-uniform inconsistent nature and the method by which the sample to acquire is decisive if the results are to be reliable. For data collection, ...  Read More ...
Optimal Placement and Size of Distributed Generators Based on Autoadd and PSO to Improve Voltage Profile and Minimize Power Losses
Optimal Placement and Size of Distributed Generators Based on Autoadd and PSO to Improve Voltage Profile and Minimize Power Losses

Mustafa R. Nasser; Inaam I. Ali; Mohammed H. Alkhafaji

Volume 39, 3A , March 2021, Page 453-464

https://doi.org/10.30684/etj.v39i3A.1781

Abstract
  This work aims to improve the voltage profile and reduce electrical network losses through optimal planning of distributed generators. A new search algorithm (Autoadd) along with the ...  Read More ...
Design of an Optimal Backstepping Controller for Nonlinear System under Disturbance
Design of an Optimal Backstepping Controller for Nonlinear System under Disturbance

Luay T. Rasheed; Mohammed K. Hamzah

Volume 39, 3A , March 2021, Page 465-476

https://doi.org/10.30684/etj.v39i3A.1801

Abstract
  The aim of the work for this paper is the design of an optimal backstepping controller for a nonlinear pendulum system to stabilize the position of pendulum’s ball suspended in ...  Read More ...
A Novel Recursive Heuristic Algorithm for Straight and U-Shaped Assembly Line Balancing with Fuzzy Processing Time
A Novel Recursive Heuristic Algorithm for Straight and U-Shaped Assembly Line Balancing with Fuzzy Processing Time

Samah. A. Aufy; AllaEldin. H. Kassam

Volume 39, 3A , March 2021, Page 477-487

https://doi.org/10.30684/etj.v39i3A.1830

Abstract
  The paper aims to address the straight and U–type assembly line balancing problems by developing a novel recursive heuristic algorithm based on the idea of the depth of search. ...  Read More ...
Modelling of Future Water Use Scenarios Using WEAP Model: A Case Study in Baghdad City, Iraq
Modelling of Future Water Use Scenarios Using WEAP Model: A Case Study in Baghdad City, Iraq

Mustafa M. Al-Mukhtar; Ghasaq S. Mutar

Volume 39, 3A , March 2021, Page 488-503

https://doi.org/10.30684/etj.v39i3A.1890

Abstract
  Iraq is one of the Middle East countries that suffer from water scarcity. In addition to the water policy of the upstream riparian countries; rapid population increase, economic growth, ...  Read More ...
Al2O3-TiO2-PMMA Bio-Composite Coating Via Electrostatic Spray Technique
Al2O3-TiO2-PMMA Bio-Composite Coating Via Electrostatic Spray Technique

Rasha A. Issa; Mohanad N. Al-Shroofy; Hanna A. Al-Kaisy

Volume 39, 3A , March 2021, Page 504-511

https://doi.org/10.30684/etj.v39i3A.1894

Abstract
  This work aims preparation of polymer-based biocomposite coating by electrostatic spray method onto 316L stainless steel substrate, the present work will compare the effects of incorporation ...  Read More ...
Assessment of the Water Quality Index of the Tigris River between the University of Baghdad and Diyala River
Assessment of the Water Quality Index of the Tigris River between the University of Baghdad and Diyala River

Ayat N. Abed; Gahyda Y. Al Kindi; Tariq A. Hussain

Volume 39, 3A , March 2021, Page 512-519

https://doi.org/10.30684/etj.v39i3A.1392

Abstract
  The Tigris River is considered as one of the two major rivers in Iraq. Many factories are located on both bank of the river such as the public company for soft drinks, Al-Dura oil refinery, ...  Read More ...