Journal of Science and Technology Research

J. Sci. Tech. Res.

DOI:10.22034/JSTR

Journal of Science and Technology Research (JSTR) is an open access, online, peer reviewed journal published by Sami Publishing Company(SPC) with cooperation of University of Baghdad-Iraq in 2021. The publication frequency of Journal of Science and Technology Research is Quarterly.

All research articles submitted to  Journal of Science and Technology Research should be original in nature, never previously published in any journal or presented in a conference or undergoing such process across the globe. All the submissions will be peer-reviewed by the panel of experts associated with particular field. Submitted papers should meet the internationally accepted criteria and manuscripts should follow the style of the journal for the purpose of both reviewing and editing. The ethical policy of Journal of Science and Technology Research is based on the Committee on Publication Ethics (COPE) guidelines and complies with International Committee of Medical Journal Editors (ICMJE) codes of conduct. The following guidelines should be read in line with the journal’s guide for authors. The statements confirm that confidentiality and fairness should be considered in all the Journal of Science and Technology Research procedures and interactions. Readers, authors, reviewers and editors should follow these ethical policies once working with Journal of Science and Technology Research.

Journal of Science and Technology Research is published Quarterly (online and in print).

All submitted manuscripts are checked for similarity through a trustworthy software named iThenticate to be assured about its originality and then rigorously peer-reviewed by the international reviewers.

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Original Research Article
Review of Theories of Contractual Liability and Coercive Guarantee
1. Review of Theories of Contractual Liability and Coercive Guarantee

Hormooz Asadi Kohbad; Hasan Bahramipor Naghani

Volume 1, Issue 4 , Summer 2021, Pages 206-214

http://dx.doi.org/10.22034/jstr.2021.287446.1031

Abstract
  Damage does not follow a person's fault enough to establish a causal relationship, but it must be proven that the fault is the actual cause and cause of the damage and without it the ...  Read More
Original Research Article
Documents Forcing a Guarantee
2. Documents Forcing a Guarantee

Hormooz Asadi Kohbad; Hasan Bahramipor Naghani

Volume 1, Issue 4 , Summer 2021, Pages 215-221

http://dx.doi.org/10.22034/jstr.2021.287444.1030

Abstract
  One of the most important rules of jurisprudence that causes coercive guarantee is the rule of Ali al-Aid, which is known by famous jurists, both Shiites and Sunnis, as narrated from ...  Read More
Original Research Article
Risk Allocation in Design Contracts, Supply of Goods and Drilling of Exploratory Wells and How to Manage Them
3. Risk Allocation in Design Contracts, Supply of Goods and Drilling of Exploratory Wells and How to Manage Them

Peyman Vaziri

Volume 1, Issue 4 , Summer 2021, Pages 222-228

http://dx.doi.org/10.22034/jstr.2021.287601.1034

Abstract
  Design, supply and drilling (EPD) contracts, referred to in the downstream industry as turnkey contracts, are new contracts in the drilling industry that can be attractive to both employer ...  Read More
Original Research Article
The Role of Intellectual Property Rights in Business Promotion
4. The Role of Intellectual Property Rights in Business Promotion

Ahmad Keshavarzi

Volume 1, Issue 4 , Summer 2021, Pages 229-233

http://dx.doi.org/10.22034/jstr.2021.288185.1035

Abstract
  One of the infrastructures that can guarantee the economic and technological success of researchers and knowledge-based companies in the age of knowledge is the attention to intellectual ...  Read More
Original Research Article
Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate
5. Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate

Ebadollah Amouzad Mahdiraji

Volume 1, Issue 4 , Summer 2021, Pages 234-241

http://dx.doi.org/10.22034/jstr.2021.289237.1038

Abstract
  Corona electric discharge phenomenon occurs when the electric field intensity exceeds the corona threshold. In the analysis of this paper, three types of hypotheses of partial charge ...  Read More
Original Research Article
Laboratory experiment of the extraction of active pharmaceutical ingredients of Oliveria decumbens plant by supercritical method using the ultrasound process
6. Laboratory experiment of the extraction of active pharmaceutical ingredients of Oliveria decumbens plant by supercritical method using the ultrasound process

Nabil Vaeli

Volume 1, Issue 4 , Summer 2021, Pages 242-251

http://dx.doi.org/10.22034/jstr.2021.289216.1036

Abstract
  In this research, the Oliveria decumbens native and medicinal plant has been used. The extract of this plant contains anti-inflammatory compounds, very strong antioxidants, Allergic ...  Read More
Short Communication
The Effects of Physical Exercise on the Immune System
7. The Effects of Physical Exercise on the Immune System

Sareh Sangy; Faegheh Miryousefiata

Volume 1, Issue 4 , Summer 2021, Pages 252-257

http://dx.doi.org/10.22034/jstr.2021.289261.1040

Abstract
  Background and Aim: Physical activity and abnormal environments cause changes in the functioning of the immune system. The aim of this study was to compare the effect of exercise in ...  Read More
Manufacture of Modified Protective Coating Derived from Coal Industry
1. Manufacture of Modified Protective Coating Derived from Coal Industry

Amin Ahmadpour; Alireza Bozorgian

Volume 1, Issue 1 , Spring 2021, , Pages 28-39

http://dx.doi.org/10.22034/jstr.2021.284979.1013

Abstract
  In this work, coal residue (pitch) was used to produce an inexpensive protective coating. The residue is primarily rehabitated for just to be suitable for use as a coating material ...  Read More
Adaptive Control of Network Frequency by Doubly-Fed Induction Generators Using a Data-Driven Method
2. Adaptive Control of Network Frequency by Doubly-Fed Induction Generators Using a Data-Driven Method

Ebadollah Amouzad Mahdiraji; Mojtaba Sedghi Amiri

Volume 1, Issue 2 , Spring 2021, , Pages 89-103

http://dx.doi.org/10.22034/jstr.2021.130260

Abstract
  Nowadays, to involve wind turbines in controlling the network frequency, drop and inertia control methods are usually used for variable speed wind turbines. Adjusting the benefits of ...  Read More
Evaluate the Effects of Establishing Occupational Health and Safety Management Standards and Environmental Management on Environmental Factors and Employee Satisfaction
3. Evaluate the Effects of Establishing Occupational Health and Safety Management Standards and Environmental Management on Environmental Factors and Employee Satisfaction

Ebadollah Amouzad Mahdiraji; Reza Kolbadinezhad

Volume 1, Issue 3 , Spring 2021, , Pages 142-149

http://dx.doi.org/10.22034/jstr.2021.285451.1022

Abstract
  This study aimed to investigate the status of the establishment of occupational safety and health management system and environmental management system on environmental factors and ...  Read More
Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate
4. Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate

Ebadollah Amouzad Mahdiraji

Volume 1, Issue 4 , Summer 2021, , Pages 234-241

http://dx.doi.org/10.22034/jstr.2021.289237.1038

Abstract
  Corona electric discharge phenomenon occurs when the electric field intensity exceeds the corona threshold. In the analysis of this paper, three types of hypotheses of partial charge ...  Read More
Inhalation Exposure to Dust Pollution in the Workplace
5. Inhalation Exposure to Dust Pollution in the Workplace

Reza Kolbadinezhad; Ebadollah Amouzad Mahdiraji

Volume 1, Issue 2 , Spring 2021, , Pages 75-82

http://dx.doi.org/10.22034/jstr.2021.285211.1018

Abstract
  Exposure to dust in the air is one of the most common environmental hazards in workshops that can have devastating effects on health. In this study, workers' exposure to particles in ...  Read More

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