Comparative Study of Perturb & Observe, Modified Perturb & Observe and Modified Incremental Conductance MPPT Techniques for PV Systems
Comparative Study of Perturb & Observe, Modified Perturb & Observe and Modified Incremental Conductance MPPT Techniques for PV Systems

Mohanad H. Mahmood; Inaam I. Ali; Oday A. Ahmed

Volume 38, 4A , April 2020, Page 478-490

https://doi.org/10.30684/etj.v38i4A.329

Abstract
  This paper presents a modified maximum power point tracking algorithm (Modified MPPT) for PV systems based on incremental conductance (IC) algorithm. This method verified with the dynamic ...  Read More ...
Characterizations of Synthetic 8mol% YSZ with Comparison to 3mol %YSZ for HT-SOFC
Characterizations of Synthetic 8mol% YSZ with Comparison to 3mol %YSZ for HT-SOFC

Abeer F. Al-Attar; Saad B. H. Farid; Fadhil A. Hashim

Volume 38, 4A , April 2020, Page 491-500

https://doi.org/10.30684/etj.v38i4A.351

Abstract
  In this work, Yttria (Y2O3) was successfully doped into tetragonal 3mol% yttria stabilized Zirconia (3YSZ) by high energy-mechanical milling to synthesize 8mol% yttria stabilized Zirconia ...  Read More ...
Preparation and Characterization of Polymer Blend and Nano Composite Materials Based on PMMA Used for Bone Tissue Regeneration
Preparation and Characterization of Polymer Blend and Nano Composite Materials Based on PMMA Used for Bone Tissue Regeneration

Sally A. Kadhum Alsaedi; Sihama I. Salih; Fadhil A. Hashim

Volume 38, 4A , April 2020, Page 501-509

https://doi.org/10.30684/etj.v38i4A.383

Abstract
  As the elderly population increases, the need for bone loss treatments is increasing. Vital substances used in such treatments are required to continue for a longer period and work ...  Read More ...
Random Forest (RF) and Artificial Neural Network (ANN) Algorithms for LULC Mapping
Random Forest (RF) and Artificial Neural Network (ANN) Algorithms for LULC Mapping

Tay H. Shihab; Amjed N. Al-Hameedawi; Ammar M. Hamza

Volume 38, 4A , April 2020, Page 510-514

https://doi.org/10.30684/etj.v38i4A.399

Abstract
  In this paper to make use of complementary potential in the mapping of LULC spatial data is acquired from LandSat 8 OLI sensor images are taken in 2019. They have been rectified, enhanced ...  Read More ...
Hydrogeological and Hydro Chemical Evaluation of Groundwater in Karbala Region Using Geographic Information System (GIS)
Hydrogeological and Hydro Chemical Evaluation of Groundwater in Karbala Region Using Geographic Information System (GIS)

Marwa S. Hussein; Imzahim A. Alwan; Tariq A. Hussain

Volume 38, 4A , April 2020, Page 515-522

https://doi.org/10.30684/etj.v38i4A.492

Abstract
  The study area is located in the holy governorate of Karbala, Iraq; the research studied a predictive mathematical model of groundwater within Dibdiba Formation and by fifty (50) wells ...  Read More ...
Experimental Investigation of the Influence of Adding Alumina to Diesel Fuel on the Engine Performance and Emission Characteristics
Experimental Investigation of the Influence of Adding Alumina to Diesel Fuel on the Engine Performance and Emission Characteristics

Sadiq T. Bunyan; Abed AL-Khadim M. Hassan

Volume 38, 4A , April 2020, Page 523-529

https://doi.org/10.30684/etj.v38i4A.498

Abstract
  The present experimental work is conducted to examine the influence of adding Alumina (Al2O3) nanoparticles to diesel fuel on the characteristic of the emissions and engine performance. ...  Read More ...
Optimizing of Coating Layers Parameters of (Nano Hydroxyapatite/TiO2 NPs) on Nitinol SMAs by Electrophoretic Deposition
Optimizing of Coating Layers Parameters of (Nano Hydroxyapatite/TiO2 NPs) on Nitinol SMAs by Electrophoretic Deposition

Riyam R. Rawdan; Makarim H. Abdulkareem; Ali Mustafa

Volume 38, 4A , April 2020, Page 530-544

https://doi.org/10.30684/etj.v38i4A.577

Abstract
  This study aims to obtain the optimal variable for depositing (HA, TiO2 and Composite) Nanomaterial on NiTi SMAs. Taguchi approach (with L9 array) was used to obtain the optimal conditions ...  Read More ...
Improve the Surface Characteristics of the Electric Discharge Machining Employing a Method Burnishing Process
Improve the Surface Characteristics of the Electric Discharge Machining Employing a Method Burnishing Process

Shukry H. Aghdeab; Ahmed G. Abdulameer; Ahmed B. Abdulwahhab; Majid H. Ismiel

Volume 38, 4A , April 2020, Page 545-551

https://doi.org/10.30684/etj.v38i4A.308

Abstract
  Electrical Discharge Machining (EDM) applies the concept of material eradication by utilizing electric spark erosion. The target of this exploration concentrates to examine the ideal ...  Read More ...
Effect of Pre-Tension on the Springback Behavior of the Yellow Brass
Effect of Pre-Tension on the Springback Behavior of the Yellow Brass

Anwar H. Zabon; Aseel H. Abed

Volume 38, 4A , April 2020, Page 552-560

https://doi.org/10.30684/etj.v38i4A.96

Abstract
  Springback forecasting of sheet formation is constantly remarkable problem in the métier, due to their influence the great in the definitive shape of the product. Study presents ...  Read More ...
Experimental Investigation of Combined Effect of Particle Size and Stability of Al2O3-H2O Nanofluid on Heat Transfer Augmentation Through Horizontal Pipe
Experimental Investigation of Combined Effect of Particle Size and Stability of Al2O3-H2O Nanofluid on Heat Transfer Augmentation Through Horizontal Pipe

Abdulhassan A. Karamallah; Hayder H. Abed

Volume 38, 4A , April 2020, Page 561-573

https://doi.org/10.30684/etj.v38i4A.177

Abstract
  The stability of nanofluid plays a rule in heat transfer growth for different engineering systems. The stability and particle size of Al2O3-H2O nanofluid effects on heat transfer are ...  Read More ...
Effect of Octane Number on Performance and Exhaust Emissions of an SI Engine
Effect of Octane Number on Performance and Exhaust Emissions of an SI Engine

Noor H. Athafah; Adei M. Salih

Volume 38, 4A , April 2020, Page 574-585

https://doi.org/10.30684/etj.v38i4A.263

Abstract
  Spark ignition engines are very popular engines that they are running millions of vehicles all over the world. This engine emits many harmful pollutants, such as CO, UHC, and NOX. In ...  Read More ...
Preparation of Al2O3/MgO Nano-Composite Particles for Bio-Applications
Preparation of Al2O3/MgO Nano-Composite Particles for Bio-Applications

Hayder A. Sallal; Alla A. Abdul-Hameed; Farhad. M. Othman

Volume 38, 4A , April 2020, Page 586-593

https://doi.org/10.30684/etj.v38i4A.290

Abstract
  This study describes the preparation and study of the properties of Nano composite particles prepared in a sol-gel method which consists of two materials (Αl2Ο3-MgΟ). ...  Read More ...
A Comparison Study on the Effect of Various Layered Sandy Soil Deposited on Final Settlement under Dynamic Loading
A Comparison Study on the Effect of Various Layered Sandy Soil Deposited on Final Settlement under Dynamic Loading

Hussein H. Karim; Zina Walid Samuel; Mohammed A. Hussein

Volume 38, 4A , April 2020, Page 594-604

https://doi.org/10.30684/etj.v38i4A.1569

Abstract
  The foundation is expansion in base of column, wall or other structure in order to transmit the loads from the structure to under footing with a suitable pressure with soil property. ...  Read More ...
Strut Confinement of Simply Supports Deep Beam Using Strut Reinforcement
Strut Confinement of Simply Supports Deep Beam Using Strut Reinforcement

Eyad K. Sayhood; Khudayer N. Abdullah; Sarah J. Kazem

Volume 38, 4A , April 2020, Page 605-613

https://doi.org/10.30684/etj.v38i4A.117

Abstract
  This study investigates the effect of confining the Strut region of the deep beam by using Struts Reinforcement; which consists of four main bars enclosed by stirrups. Six specimens ...  Read More ...
Study of the Barreling of Copper Solid and Hollow Cylinders under Uniaxial Compressive Load
Study of the Barreling of Copper Solid and Hollow Cylinders under Uniaxial Compressive Load

Abdullah D. Assi

Volume 38, 4A , April 2020, Page 614-621

https://doi.org/10.30684/etj.v38i4A.306

Abstract
  In this study, the effect of axisymmetric compression of cylindrical blocksof copper on diameter ratio, height reduction ratio and aspect ratio wasnoted. The effects of these non-dimensional ...  Read More ...