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Comparison of uroliths and gallstones crystallization with metal crystallization

Klimek L.

Archives of Foundry Engineering

2011

Vol. 11, iss. 3 spec.

117--120

The human organism creates different deposits in the form of minerals which play an important role in its functioning. Some of them located mainly in blood vessels, kidneys and urinary tracts, biliary tracts, salivary, pancreatic, new growths etc. have a determinately negative effect. Recognition of these minerals, getting to know the conditions in which they grow and first of all the processes of their appearance have a primary meaning in the possibility of prevention of their crystallization. The work shows the results of microscopic and diffractometric tests of uroliths and gallstones. On the basis of this research it is possible to state that there is a certain analogy in the crystallization process of these deposits with crystallization of metals. As far as the process of nucleation is concerned, only heterogenic nucleation takes place. But in the process of growth faced crystals and non-faced crystals appear. Thus, it can be assumed that there are some analogies in the process of metal crystallization with the crystallization of deposits in the human body.

Wpływ spektralnego ciepła krystalizacji na postać krzywej ATD

Jura Z.

Krzepnięcie Metali i Stopów

1998

nr 37

79--87

Przedstawiono analizę wpływu spektralnego ciepła krystalizacji na postać krzywej analizy termicznej i derywacyjnej (ATD). Spektralne ciepło krystalizacji to funkcja opisująca wydzielanie ciepła krystalizacji względem temperatury [Qk(T)]. Dla określenia tego wpływu zastosowano autorski program komputerowy SYM-ATD do symulacji numerycznej procesu krystalizacji metalu.

In paper was presented inflow of crystallisation spectral heat for thermal and derivative curves (TDA method). The crystallisation spectral heat function describes emission of heat vs. temperature. For describing of this inflow was used computer program SYM-ATD for crystallisation process numerical simulation.