In this article, an exact analysis of compressors spool in a turbojet engine has been investigated. The spool is modeled as a rotating thick-walled hollow circular cylinder with free-clamp ends. It is subjected to centrifugal load due to its constant rotational speed, uniform internal and external radial loads and arbitrary thermal gradients. The analysis is initially investigated for the homog...

Finding the equilibrium path by non-linear structural analysis is one of the most important subjects in structural engineering. In this way, Incremental-Iterative methods are extremely used. This paper introduces several factors in incremental steps. In addition, it suggests some control criteria for the iterative part of the non-linear analysis. These techniques are based on the geometric of e...

Abstract Objective to discuss patient safety based on a theoretical approach and the health quality attributes in context of new coronavirus pandemic. Method reflection developed structural, particular singular dimensions contained Theory Practical Intervention Collective Health Nursing Donabedian attributes, as well Program for Performance Evaluation Services. Results drastic sudden changes ca...

this paper presents an investigation of the structure of persian clauses which display verb phrase ellipsis. to this end, verb phrase ellipsis in persian will be discussed in the light of the two theoretically significant approaches to ellipsis, namely, structural versus non-structural. drawing on data from persian and running the independently devised syntactic tests, we will argue that the or...

the synthesis of the title compound is described. this compound was found to be active (3c) against a number of pathogenic microorganisms in vitro. it is a non-absorbable antibacterial topically and its pharmacologic studies revealed that it is a non-toxic agent with a wide range of safety. it proved to be effective in the prevention and treatment of pseudomonaswound infections in volunteer pat...