H3-DV-14B flender sip Helical speed reduction gearbox H3

Flender/Flender Gear Units/Helical speed reduction gearbox H3

ected (or normal)proles of particular commodity include physiological age at harvest; prestorage treat- ments or processing; storage conditions (temperature, pressure, gas composition); evolu- tion of the prole over the storage time due to processes such as ripening, change of substrate for respiration, and change of mode of respiration from aerobic to anaerobic(fermentation); and background proles for the particular site. One would expect particular changes in the normal proles if physiological disor- der occurs or if pathogen infects the produce. Physiological disorders cause differentchemical activities within the produce from that in normal situation and the volatiles resulting from the biochemical activity of pathogen become superimposed. At advanced stages, the pathogen also interferes with the normal metabolism of the commodity. Forexample, it is well known that the development of anaerobic storage conditions leads tofermentation in commodities such as apples, in which case the anaerobic prole includeshigh concentrations of ethyl alcohol (. The storage headspace of commodities that aresubject to invasion by pathogenic microorganisms may exhibit pathogen-specic volatiles (2,3, or volatile proles associated with the principal substrates attacked. If particu- lar disorders or pathogens can be associated with characteristic changes in the proles,the information can be used in risk assessment and can suggest appropriate remedial ac-tions. Assuming that differences in volatile proles can be related to activity of pathogens and physiological state of the stored product, as is indicated in the literature, quantitative relationships among key factors must be analyzed to determine whether the chosen moni- toring technology can provide real benet. First, the detection limits and magnitudes ofchange of the discriminant volatiles should be known relative to the extent of infection.Second, the relationship between the detectable extent of infection and the epidem