Search results for "Ventilation rate"
showing 2 items of 2 documents
IAQ monitoring in heritage buildings
2005
Heritage buildings often operate in free conditions, as they are not equipped with HVAC systems. This calls for the interventions of proper measurements with the aim of monitoring and controlling indoor physical parameters. As matter of fact, the control of indoor conditions in museums is of paramount importance for the proper preservation of artefacts. Moreover, in such buildings another requirement should be achieved, that is the maintenance of the comfort and safety conditions for visitors. In this work the results of a survey carried out on a hall of a historical palace to estimate the people occupancy by making use concentration of CO(2) are reported.
Increased ventilation by fish leads to a higher risk of parasitism
2014
Background: Fish are common intermediate hosts of trematode cercariae and their gills can potentially serve as important sites of penetration by these larval stages. We experimentally tested the hypothesis that volume of ventilation flow across the gills contributes to acquisition of these parasites by fish. We manipulated the intensity of ventilation by using different oxygen concentrations. Methods: Juvenile Oncorhynchus mykiss were individually exposed for 10 minutes to a standard dose of Diplostomum pseudospathaceum cercariae at three levels of oxygen concentration, 30, 60 and 90%. Ventilation amplitude (measured as a distance between left and right operculum), operculum beat rate, and …