Research Paper
Fabrication of Silver Nanoparticles in Aqueous Solution by Laser Technique and Study of Their Hemocompatibility and Antibacterial Effects Against Dental Decay Bacteria
Fabrication of Silver Nanoparticles in Aqueous Solution by Laser Technique and Study of Their Hemocompatibility and Antibacterial Effects Against Dental Decay Bacteria

Ruaa H. Abbas; Azhar M. Haleem; Abdulhadi K. Judran

Volume 41, Issue 4 , April 2023, Page 543-552

https://doi.org/10.30684/etj.2023.136922.1329

Abstract
  Silver nanoparticles (Ag NPs) were prepared by laser ablation of a silver bulk immersed in cetrimonium bromide (CTAB). The immersed sheet was focused by a pulsed Nd:YAG laser at 1064 ...  Read More ...
Research Paper
Effect of Subcritical Treatment (Tempering) on Hardness and Wear of High Chromium White Cast Iron
Effect of Subcritical Treatment (Tempering) on Hardness and Wear of High Chromium White Cast Iron

Sahraoui Aissat; Ali Safa

Volume 41, Issue 4 , April 2023, Page 553-561

https://doi.org/10.30684/etj.2023.137551.1353

Abstract
  High chromium white cast iron (HCWCI) is used in mining, crushing plants, as mill liners, and in the manufacture of grinding balls. The grinding ball is the essential element in fine ...  Read More ...
Research Paper
E-voting System Based on Ethereum Blockchain Technology Using Ganache and Remix Environments
E-voting System Based on Ethereum Blockchain Technology Using Ganache and Remix Environments

Hind S. Hassan; Rehab Hassan; Ekhlas K. Gbashi

Volume 41, Issue 4 , April 2023, Page 562-577

https://doi.org/10.30684/etj.2023.135464.1273

Abstract
  Abstract—In the second decade of the twenty-first century, blockchain is considered one of the most popular computer technologies. Blockchain is a zero-trust network, making it ...  Read More ...
Research Paper
Analysis and Simulation the Effect of the Pierce Parameter on the Output of the Free Electron Laser system
Analysis and Simulation the Effect of the Pierce Parameter on the Output of the Free Electron Laser system

Thair A. Khalil Al-Aish; Hanady A. Kamil

Volume 41, Issue 4 , April 2023, Page 578-585

https://doi.org/10.30684/etj.2023.137996.1365

Abstract
  The free electron laser is considered one of these important and advanced inventions because it provides a laser beam within various wavelengths of the electromagnetic spectrum. In ...  Read More ...
Research Paper
A Comparison of Results among Waste Management Producers: A Case Study for the Process of Waste Management
A Comparison of Results among Waste Management Producers: A Case Study for the Process of Waste Management

Jabbar Abbas; Huda Hadi

Volume 41, Issue 4 , April 2023, Page 586-591

https://doi.org/10.30684/etj.2023.138376.1388

Abstract
  In this paper, we apply a mathematical model based on cooperative game theory to model cooperation among producers in waste management. Then, we use the Shapely value as a solution ...  Read More ...
Review Paper
A sight of view on hydrothermal synthesis of copper oxide
A sight of view on hydrothermal synthesis of copper oxide

Roaa A. Abaas; Evan T. Salim; Rana O. Mahdi

Volume 41, Issue 4 , April 2023, Page 592-602

https://doi.org/10.30684/etj.2023.138424.1391

Abstract
  In this study, attention was directed to the preparation of nano-copper oxide films and their multiple applications, where a group of recent researches were presented and compared to ...  Read More ...