h-index: 7     i10-index: 5

Review Article
Review of Theories of Contractual Liability and Coercive Guarantee

Hormooz Asadi Kohbad; Hasan Bahramipor Naghani

Volume 1, Issue 4 , August 2021, Pages 195-203

https://doi.org/10.48309/EJST.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 damage would not have occurred. The meaning of because here is not the complete cause or the perfect cause, but the cause ...  Read More

Review of Theories of Contractual Liability and Coercive Guarantee


Original Research Article
Documents Forcing a Guarantee

Hormooz Asadi Kohbad; Hasan Bahramipor Naghani

Volume 1, Issue 4 , August 2021, Pages 204-210

https://doi.org/10.48309/EJST.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 the Prophet. Among the Shiite narration societies, this narration has been quoted in the book Mustadrak al-La'ali, quoting ...  Read More

Documents Forcing a Guarantee


Original Research Article Engineering
Risk Allocation in Design Contracts, Supply of Goods and Drilling of Exploratory Wells and How to Manage Them

Peyman Vaziri

Volume 1, Issue 4 , August 2021, Pages 211-217

https://doi.org/10.48309/EJST.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 and contractor. In this type of contracts, the design, supply of equipment and goods, as well as drilling wells ...  Read More

Risk Allocation in Design Contracts, Supply of Goods and Drilling of Exploratory Wells and How to Manage Them


Original Research Article
The Role of Intellectual Property Rights in Business Promotion

Ahmad Keshavarzi

Volume 1, Issue 4 , August 2021, Pages 218-222

https://doi.org/10.48309/EJST.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 property rights. Given that most of the assets of researchers and knowledge-based companies are intellectual property, ...  Read More

The Role of Intellectual Property Rights in Business Promotion


Original Research Article Engineering
Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate

Ebadollah Amouzad Mahdiraji

Volume 1, Issue 4 , August 2021, Pages 223-230

https://doi.org/10.48309/EJST.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 (electrons, positive ions, negative ions) generated in the air due to corona electrical discharge are considered. The ...  Read More

Evaluation of Corona Charge Positive and Negative Impulses on Polymeric Surfaces and Simulation of Impact Rate


Original Research Article Chemistry
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 , August 2021, Pages 231-240

https://doi.org/10.48309/EJST.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 reduction compounds and antiviral and anticancer compounds. Extraction of this plant was investigated using supercritical ...  Read More

Laboratory experiment of the extraction of active pharmaceutical ingredients of Oliveria decumbens plant by supercritical method using the ultrasound process


Original Research Article Physics
Evaluation of Excellence of Ilam Telecommunication Organization Based on EFQM Model

Mohammad Ranjbarian

Volume 1, Issue 4 , August 2021, Pages 241-254

https://doi.org/10.48309/EJST.2021.289317.1042

Abstract
  The purpose of this study is to evaluate the excellence of Ilam Telecommunication Organization based on EFQM. The statistical population of this research is all the personnel of Ilam Telecommunication Organization and the sample size has been obtained using Cochran's formula of 202 people. Data collection ...  Read More

Evaluation of Excellence of Ilam Telecommunication Organization Based on EFQM Model