فهرست مطالب mohsen eftekhari

Today, with the increasing importance of human resources, organizations try to take a step in the direction of increasing organizational commitment among personnel by examining important components such as psychological health. The present study was conducted with the aim of investigating the relationship between the components of organizational trust and organizational psychological health and organizational commitment. In this research, organizational trust questionnaire, organizational psychological health questionnaire and organizational commitment were used. This model was tested by analyzing survey responses collected from 222 managers and employees of Tejiran Industrial Company with SPSS23 and Smart PLS3 software. has taken. Research findings show that organizational trust has a positive and significant effect on organizational psychological health in Tejiran Industrial Company. In addition, organizational trust has a positive and significant effect on organizational commitment in Tejiran Industrial Company.

Dewatering and water recycling operations in mineral concentration processes lead to not only cost-effective water use, but also less waste disposal to the environment. In this study, optimization of dewatering process in Zareshouran gold processing plant is carried out using hydrocyclone containing circuit. For this purpose, 12 experiments using 4 spigots with 2, 3, 6, 9 mm diameter, and in 3 operation state of spray discharge, transition state and rope discharge have been conducted. Dewatering capability of hydrocyclone is evaluated based on solid weight percent and solid recovery of underflow stream. The results indicate that in the same operation state, increase in spigot diameter leads to an increase in solid recovery and a decrease in solid weight percent of underflow stream. On the other hand, as the operation state tends to rope discharge solid weight percent and solid recovery of underflow increases simultaneously. Therefore, it can be stated that spray discharge pattern has a higher dewatering capability. Using a spigot with 6mm diameter in the operation state of spray discharge, solid recovery and solid weight percent reaches 75 and 61%, respectively. In this condition, if hydrocyclone is considered as the first step of dewatering process, 75% of the feed solid content can be directly transferred to tailings dam at a lower cost. On the other hand, the overflow stream carries only 25% of feed solid content. If pressure filter present in current dewatering system are considered as the second step of dewatering process, their feed slurry will be reduced by 75%. This means an overall increase in dewatering system capacity by hydrocyclone.

Mahayat (common or joint interests) is derived from the word “board” (Heyaat). Literary, this term means mutual equivalence between two boards or situations. Mahayat means partition of joint interests that provides fair vindication of property by retaining it and preventing a delay. Accordingly, this is a logical way for company survival. In general, joint interests are partitioned if the actual joint interest cannot be partitioned, and owners have to divide the interest to avoid their loss. In jurisprudence, interest partitioning is done based on the consent, which is permissible under the contract in which partners can cancel it or perform it based in the judicial force in the case of disagreement. The nature of this contract, in the viewpoint of Imamiah Jurisprudence, indicates that joint interest is an uncertain contract like contracts of exchange. If this contract is not matched with other contracts, it can be enforced as a new contract. This study was conducted to determine the nature and orders of joint interests in the opinion of Jafari Langarudi and Imamiah Jurisprudence. In the viewpoint of Imamiah Jurisprudence, the nature of this contract indicates that joint interest is an uncertain contract like contracts of exchange. If this contract is not matched with other contracts, it can be enforced as a new contract. Joint interests are divided based on the consent or compulsion and are executable with legal force in the case of disagreement.