Abstract: Devices, methods and techniques are disclosed to perform high confidence sterilization of indoor air with low power requirements. In one example aspect, a sterilization device includes a power source, an energy storage coupled to the power source and configured to store electric charges, a set of electrodes arranged in a specified geometry to have a fixed characteristic impedance, and a switch positioned between the energy storage and the set of electrodes. The switch is configured to operate to establish a pulsed electric field on the set of electrodes.

Abstract: An implement mounting apparatus for use with utility tractors, lawn and garden tractors and riding front mowers and other vehicles which allows removable mounting and use of numerous attachments for performing multiple grounds maintenance, yard and lawn care or gardening functions. A support frame includes an upper member for positioning and a bottom member for supporting implements such as lift forks, a tool organizer, a work platform and housing body. The support frame is rigidly or pivotally mountable on a three-point hitch, a mounting/lift frame having a support strut, or a tow bar assembly. Wheels may be added for use of the apparatus with a tow bar as a trailer. The housing body is useful with a scraper blade as a plow, or may be easily converted to a hopper assembly or scoop by adding hopper or scoop members. The hopper assembly may be opened to dump contained material with a spring biased latch mechanism which may be locked closed. The scoop member is secured in position with the same latch mechanism.