Correct estimation of water inflow into underground excavations can decrease safety risks and associated costs. Researchers have proposed different methods to asses this value. It has been proved that water transmissivity of a rock joint is a function of factors, such as normal stress, joint roughness and its size and water pressure therefore, a laboratory setup was proposed to quantitatively m...

“In 1963 Marvin Cohen and I, at the University of Chicago, had been studying the energy bands of semiconductor crystals and using their fundamental optical absorption spectra to refine the results of quantum mechanical calculations when we realized that our deductive approach left unanswered some of the most important questions, for both the calculations and the experiment showed systematic che...

This work statistically analyzed the between-laboratory and demographic effects on cardiac activity during sleep in a multi-laboratory sleep monitoring study. A multilevel analysis was employed to evaluate these effects on two cardiac parameters expressing heart rate and heart rate variability. Results show that the two parameters vary between sleep stages and from subject to subject while ther...

background and objectives: pre-requisite programs (prps) are “primary conditions and requirements essential for haccp operations, which are crucial in food safety programs”. the present study was conducted to evaluate the impact of implementation of prps on the microbial parameters of pasteurized milk (according to the national standard of iran). effectiveness of haccp operation requirements an...

BACKGROUND A set of standard clinical chemistry and hematology parameters are usually measured during clinical studies. The major outcome of these standard tests is to control that the drug investigated does not lead to pathophysiological changes in respective organs or blood. In some cases based on scientific rationale such tests may not be needed. In this paper we report on a standard set of ...