Abstract:
The invention discloses the use of a corona plasma electrode, preferably the reference electrode as a recipient for precipitation of contaminants of a gaseous medium conducted through a flow-through air treatment device (1), said air treatment device (1) comprising a downstream ozone mitigation device (4). The duration of exposure of said contaminant to reactive oxygen species, especially ozone (O 3 ), is thereby prolonged up to or exceeding an effective value necessary for decontamination.
Abstract:
The invention discloses the use of a corona plasma electrode, preferably the reference electrode as a recipient for precipitation of contaminants of a gaseous medium conducted through a flow-through air treatment device (1), said air treatment device (1) comprising a downstream ozone mitigation device (4). The duration of exposure of said contaminant to reactive oxygen species, especially ozone (O3), is thereby prolonged up to or exceeding an effective value necessary for decontamination.
Abstract:
Particle detection and characterising apparatus has an insulating tube (50) along which the particles flow. Five electrodes (51, 52, 55, 56) and (57) spaced along the outside of the tube are connected via amplifiers (61) and (62) to a processor (68) arranged to measure the charge on the particles. The apparatus also includes a laser (11) and photomultiplier tube (23) arranged to measure the size of the particles so that the nature of the particles can be characterised from their electrical charge and size.
Abstract:
Apparatus for and methods of obtaining positional information about one or more objects in a detection field are disclosed. An array including a transmitting element and a plurality of receiving elements is provided. In one aspect a truncated cross-correlation function is applied to determine the interval between signals received by a plurality of the receiving elements, thereby to determine an angular position of an object. In another aspect a warning zone is defined and it is determined whether an object is within the warning zone. Also disclosed are techniques for stretching received signals, and techniques for obtaining positional information relating to an object using non-Doppler radar. Various implementations, modifications and applications of the techniques described are disclosed. Typical applications of the techniques described are with vehicles.