The current maintenance mode of the subway vehicle traction system does not consider the change of failure rate in the operation of components, and there is an unreasonable maintenance interval bushranger awning and high maintenance cost.To solve this problem, a dynamic preventive maintenance strategy for subway vehicle traction systems considering
The main objective of this study is to investigate the need for the adoption of specific financial reporting standards for small and medium-sized enterprises to achieve a favorable picture of the financial situation, financial performance and financial flexibility of small and medium business units in Iran.This research was conducted through interv
Aims: The aim of this study is to find manners of noise abatement to reach to its allowable values by which the noise caused by compressors can be reduced, and if use of enclosure is an effective alternative.Materials and Methods: In the study, analysis of noise caused by the compressor and how distribution of sound frequencies with and without the