stack operation
2.In view of characteristics of seismic data of gobi-sand dune areas, this paper, through various data-processing means such as quality control, high-pass filltering, dip angle filltering, field static correction, surface consistency deconvolution, precise velocity analysis, denoising before stack, multiple iterative operation of residual static correction, denoising after stack and modification after shift, has raised the data quality of seismic profiles in low signal-to-noise ratio areas and managed to form the seismic data-processing technique for such complex areas as gobi, foreland and dune.
4.The 90m high steel structural stack for the reheating furnace of the pipe rolling plant under the Tianjin Seamless Pipe Company produces the big vibration amplitude usually during operation under wind load,especially in the case of the wind of Beaufort force 4 of 5,the steel stack causes the resonance phenomenon,therefore the stack should be reinforced.
5.In this paper, a detachment-integration stack with active area of 390 cm2 was assembled for experimental studies of quantifying water balance of Nafion 112 membrane in various operating conditions. The effects of current density, temperature, pressure, dry gases operation and hydrogen stoichiometry on net water transfer coefficient were revealed. The water balance data in the paper were important experiment foundation for design of self-humidifying operation for PEM fuel cells.
