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Jednym z kryteriów projektowych w instalacjach zapobiegania zadymieniu pionowych dróg ewakuacyjnych za pomocą nadciśnienia jest zapewnienie minimalnej prędkości przepływu w drzwiach otwartych w kierunku od przestrzeni chronionej do korytarza. Minimalna prędkość przepływu ma uniemożliwić przedostanie się dymu z przestrzeni objętej pożarem do przestrzeni chronionej. Warunek zostanie spełniony tylko...
The objective of this study was to analyze fresh and pasteurized cranberry and strawberry juices, based on the content of polyphenols, anthocyanins and ascorbic acid, as well as DPPH• radical scavenging capacity. Significant differences were found between the investigated juices, dependent on both fruit species and the technological process. Cranberry juices were characterized by higher concentrations...
Ammonium form of zeolite Y was used as the packing material for preconcentration of lead, cadmium, copper and zinc in a flow injection system, and for their determination by flame atomic absorption spectrometry. Preconcentration conditions were investigated and optimised with respect to sensitivity and detection limits. Under optimum conditions, concentration efficiency coefficients for 1 minute loading...
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