Abstract: A cleaning implement is provided for cleaning surfaces with a cleaning substrate. The cleaning implement includes a handle connected via a universal joint to a support head. The support head includes a substantially transparent top piece having a plurality of protruding and recessed region which diffract light to create visible shadow and bright zones.

Abstract: A system and method for continuous decomposition of organic material to produce biogas and compost in which successive reactor zones in a primary reactor are used in turn to receive organic material which is decomposed in situ anaerobically followed by aerobic decomposition and excavation of raw compost from the same reactor zone where it is received into the organic treatment facility. Organic rich liquor recovered during anaerobic decomposition is further decomposed in a secondary reactor from which spent liquor is returned to the primary reactor while biogas harnessed from both the primary and secondary reactors is treated, and optionally used to fuel the operation of the organic treatment facility or for sale as fuel or electricity.

Abstract: An adherent sheet material and method of making including at least one adhesive, non-raised region protected from inadvertent adherence to a contact surface. This adherent sheet material also including a film having a front face and back face, wherein the front face has a plurality of collapsible, non-adhesive protrusions extending outwardly from the front face and adhesive, non-raised region disposed between the protrusions. Also, a substrate is bonded to the back face of film. An adherent sheet material including a contact adhesive protected from inadvertent adherence to a contact surface. This adherent sheet material also including a film having a front face and back face, wherein the front face has a plurality of collapsible, non-adhesive protrusions extending outwardly from the front face and adhesive, non-raised region disposed between the protrusions.