92 research outputs found
Amplification by stochastic interference
A new method is introduced to obtain a strong signal by the interference of
weak signals in noisy channels. The method is based on the interference of 1/f
noise from parallel channels. One realization of stochastic interference is the
auditory nervous system. Stochastic interference may have broad potential
applications in the information transmission by parallel noisy channels
Videoradiography of Free Jejunal Grafts for Rehabilitation of Speech in Laryngectomized Patients
Assessment of Methods Used in 1D Models for Computing Bed-Load Transport in a Large River: The Danube River in Slovakia
Drag Reduction in Open Channel Flow by Aeration and Suspended Load
In supercritical open channel flows air is entrained at the free surface. Such air-water flows, called self-aerated flows, exhibit smaller friction losses than non-aerated flows. New data on drag reduction in self-aerated flows are presented. It is shown that the drag reduction process is linked with the presence of an air concentration boundary layer next to the channel bottom. An analogy with dilute polymer solutions and micro bubble modified boundary layers is developed and it is suggested that the presence of air next to the bottom increases the effective viscosity of the mixture and the sublayer thickness. A parallel with sediment laden flows is also developed. Although the distribution of suspended sediments differs from the distribution of air bubbles, it is suggested that the mechanisms of drag reduction observed in suspended sediment flows are similar to those in self-aerated flows
Simple method for the determination of organochlorine-compounds as total reference number EOCl (extractable organic chlorine) in aqueous solutions
Rapid determination of nitrogen in organic compounds by means of a thermal conductivity cell
Determination of traces of carbon in solid and liquid wastes of chemical plants by means of thermal conductivity measurements
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