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Innowacyjna technologia w zapobieganiu i zwalczaniu zagrożeń pożarowych

Galowy G., Kubista M.

Energetyka

2009

nr 5

293-293

Omówiono innowacyjne rozwiązania w zakresie zapobiegania powstawaniu i rozprzestrzenianiu się pożarów oraz możliwości ich gaszenia. Przedstawiono budowę i zasadę działania proszkowej kuli gaśniczej oraz scharakteryzowano jej podstawowe parametry i wyniki badań. Pokazano samoczynne zadziałanie kuli i sposoby jej użycia manualnego. Podkreślono korzystny wpływ tej technologii na środowisko naturalne. Przytoczono szerokie spektrum zastosowań i perspektywy dalszego rozwoju.

Discussed are innovative solutions in the field of preventing the fires to start and expand and possibilities to extinguish them. Presented is construction and operation principle of a dry powder fire extinguishing ball as well as characterized are its basic parameters and testing results. Shown is its automatic deployment and methods for manual use. Emphasized is positive influence of this technology on natural environment. Described is wide spectrum of applications and perspectives of further development.

Muliwavelength Spectrophotometric Determination of Protolytic Constans of 4-(2-Pyridylazo)resorcinol (PAR) in Binary Dioxane + Water Mixtures

Rouhollahi A., Kiaie F., Ghasemi J., Kubista M.

Polish Journal of Chemistry

2005

Vol. 79 / nr 8

1251-1263

Acid-base properties of 4-(2-pyridylazo)resorcinol (PAR) in 1,4-dioxane (DX)-water binary mixture were investigated using a multiwavelength spectrophotometric method. The protolytic equilibrium constants, spectral profiles, concentration diagrams and also the number of components have been calculated from the fitting of the pH-absorbance data with appropriate mass balance equations by an established factor analysis model. The binary mixture of water-DX is a good system to study changing in the donating ability and permittivity of mixed solvent components in comparison to each other, considering the fact that variation in the permittivity from pure water to pure DX is 76 units. A linear relationship is observed between pKa's of the PAR molecule and the mole fraction of DX in different solvent mixtures. A glass electrode calibration procedure based on a four-parameter equation aided Gran's method was used to obtain pH readings based on the concentration scale (pcH). It has been observed that there is an inverse relationship between second and third protolytic constants and mole fraction of DX. The effect of the solvent on the protolytic constants was discussed.