Nerve membranes consist of an approximately equal mixture of lipids and proteins. The propagation of nerve pulses is usually described with the ionic hypothesis, also known as the Hodgkin-Huxley model. This model assumes that proteins alone enable nerves to conduct signals due to the ability of various ion channel proteins to transport selectively sodium and potassium ions. While the ionic hypo...

Leakage in heat exchanger tubes can result in unreliable products and dangerous situations, which could cause great economic losses. Along with fast development of modern acoustic detection technology, using acoustic signals to detect leakage in heat exchange tube has been gradually accepted and considered with great potential by both industrial and research societies. In order to further advan...

Leakage in heat exchanger tubes can result in unreliable products and dangerous situations, which could cause great economic losses. Along with fast development of modern acoustic detection technology, using acoustic signals to detect leakage in heat exchange tube has been gradually accepted and considered with great potential by both industrial and research societies. In order to further advan...

The natural variability of the Weddell Sea variety of Antarctic Bottom Water (AABW) is examined in a long-term integration of a coupled climate model. Examination of passive tracer concentrations suggests that the model AABW is predominantly sourced in the Weddell Sea. The maximum rate of the Atlantic sector Antarctic overturning ( atl) is shown to effectively represent the outflow of Weddell S...

We show that Green's functions of second order differential operators with singular or unbounded coefficients can have an anomalous behaviour in comparison to the well-known properties of the Green's functions of operators with bounded coefficients. We discuss some consequences of such an anomalous short or long distance behaviour for a diffusion and wave propagation in an inhomogeneous medium....

Gesneriaceae. Root cuttings were used for various fruit crops, horseradish (Armoracia rusticana P. Gaertn., B Mey. & Scherb.), and others. It was known that when shoots were regenerated adventitiously, as with root cuttings or leaf cuttings, traits (such as variegation), which are associated with chimeras were lost (Bailey, 1896). Humidity control was not nearly as good as today s mist and fog ...

The review contains information o; n the properties of phase-change materials (PCM) and possibilities their use as basis thermal energy storage. Special attention is given to PCMs with a phase transition temperature ranging between 20 80 °C since such can be effectively used reduce variations in residential industrial rooms. Thus, application construction industry enables one considerably power...