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Abstract A concealed geological structure encountered during the excavation of a coal working face could connect to high-pressure water in limestone strata, which can result serious or catastrophic inrush accident. However, existing geophysical detection methods used ensure safety faces cannot detect small anomalies reliably. Based on generalized theory scattered waves, we have developed novel ...

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Paul W. Bauer is an economist at the Federal Reserve Bank of Cleveland, Allen N. Berger is a senior economist at the Board of Governors of the Federal Reserve System, and David B. Humphrey is a professor of finance at Florida State University. The authors would like to thank Knox Love11 and James Thomson for helpful comments, and Alex Wolman and Fadi Alameddine for outstanding research assistance.

in all over the world, mining is considered as a high-risk activity that is pregnant with serious disasters not only for miners, engineers, and other people into it, but also for people who live near the mines. in this article, our main purpose is to examine some major mine disasters and safety in mines and the case study is a coal mine in turkey. safety in mines is one of the most important is...

In the context of open-pit mine planning, uncertainties including commodity price would significantly affect the technical and financial aspects of mining projects. A mine planning that takes place regardless of the uncertainty in price just develops an optimized plan at the starting time of the mining operation. Given the price change over the life of mine, which is quite certain, optimality o...

This paper takes the bottom pumping roadway of 33190 machine in No.10 mine China PingMeiShenMa Group as engineering background. is a hydrothermal mine, with strong heat conduction and thermal convection activities between surrounding rock geothermal water. forms anomaly area, making overall temperature field increase affecting environment. According to measured data geological conditions roadwa...

Respiratory neurons are synchronized on a long time scale to generate inspiratory and expiratory-phase activities that are critical for respiration. Long time scale synchrony within the respiratory network occurs on a time scale of more than hundreds of milliseconds to seconds. During inspiration, neurons are synchronized on a short time scale to produce synchronous oscillations, which shape th...