The purpose of this study was to the study of investigating the relationship between perceived organizational support and quality of working life via mediating role of job stress. A descriptive, quantitative, co relational design was used. Statistic population of research concludes all Kerman University of Medical Sciences staff . The population comprises all the employees of the above organiza...

In directional drilling, the most important thing that leads to pulling out the drill string is end of mud motor working life. Considering the working conditions of down hole mud motors; increasing the mechanical properties of their stator’s elastomer is crucial. Some attempts were done to increase the motor performance through geometrical changes but lack of material improvement is significant...