Abstract: A method, apparatus, and system to remotely acquire information from volumes in a snowpack and to analyze the information are disclosed. Electromagnetic energy is transmitted remotely to a region of interest in a snowpack and data about reflections are processed to determine reflection values for different volumes within the snowpack. The frequency of the transmit signal is modulated and the positions from which energy is transmitted and received are changed to create a two-dimensional synthetic aperture that allows reflections from three-dimensional volumes to be discriminated and resolved. The electromagnetic energy is transmitted to ensure that it arrives at the snowpack at shallow grazing angles to maximize returns from volumes in the snow and to minimize boundary reflections from the ground.

Abstract: A compact synthetic aperture radar system and associated methods are disclosed.

Abstract: A method, apparatus, and system to remotely acquire information from volumes in a snowpack and to analyze the information are disclosed. Electromagnetic energy is transmitted remotely to a region of interest in a snowpack and data about reflections are processed to determine reflection values for different volumes within the snowpack. The frequency of the transmit signal is modulated and the positions from which energy is transmitted and received are changed to create a two-dimensional synthetic aperture that allows reflections from three-dimensional volumes to be discriminated and resolved. The electromagnetic energy is transmitted to ensure that it arrives at the snowpack at shallow grazing angles to maximize returns from volumes in the snow and to minimize boundary reflections from the ground.

Abstract: A buoyant wastewater aeration apparatus includes a buoyant float pod and at least one air conduit leg removably attached at a leg input end to a respective air supply outlet. The float pod further includes a leg-retainer structure that accommodates efficient engagement/dis-engagement of the air conduit leg at a known region of the leg. The leg-retainer structure may be in the form of a resilient clamp having an open end for removably engaging the known region of the leg. Alternatively, the leg may have attached thereto in the known region thereof a leg retainer-engaging structure that surrounds the leg, wherein the leg-retainer structure is a non-resilient split-ring having a given shape and dimension. The split space has a dimension sufficient for the leg diameter to pass through.

Abstract: A compact synthetic aperture radar system and associated methods are disclosed.

Abstract: Oxygen depleted wastewater is introduced as a stream into the top of a vessel containing a set of perforated triangular vanes arranged to rotate about a vertical axis. The stream is directed downwardly in the vessel along a path that traverses the path of the rotating vanes so the vanes impact the stream. The force of the impact of the vanes against the stream and the perforations in the vanes cooperate to create a fine droplet mist in the vessel. Atmospheric air drawn into the vessel is mixed and entrained in the mist so that when the mist coalesces, micro-fine size air bubbles are formed. The triangular vanes further provide a pumping action to expel a now aerated stream of wastewater from adjacent the bottom of the vessel.

Abstract: Oxygen depleted wastewater is introduced as a stream into the top of a vessel containing a set of perforated triangular vanes arranged to rotate about a vertical axis. The stream is directed downwardly in the vessel along a path that traverses the path of the rotating vanes so the vanes impact the stream. The force of the impact of the vanes against the stream and the perforations in the vanes cooperate to create a fine droplet mist in the vessel. Atmospheric air drawn into the vessel is mixed and entrained in the mist so that when the mist coalesces, micro-fine size air bubbles are formed. The triangular vanes further provide a pumping action to expel a now aerated stream of wastewater from adjacent the bottom of the vessel.

Abstract: A wastewater aerating system uses a plurality of aeration floats movably arranged within a body of wastewater and supplies each of the floats with compressed air delivered through a flexible line from a compressor arranged onshore near the wastewater body. Each aeration float has a floatation chamber floating on the surface of the wastewater and delivers compressed air from the floating chamber downward to a predetermined depth below the waste water surface where the compressed air is distributed to a plurality of diffusers arranged around the surface float to direct streams of air bubbles up through the wastewater to the wastewater surface around the surface float. This nourishes aerobic bacteria, which then consume materials within the wastewater.

Abstract: A floating biological contactor confining aerobic bacterial growth media in a container submerged in a wastewater lagoon provides fluid flow for bacteria growth by bubbling fine air bubbles upward through the media from diffusers arranged near the container bottom, which has openings allowing lagoon liquid to rise upward through the media with the air bubbles in a gentle circulational flow. Coarse bubble dispensers, also arranged under the media, deliver coarse bubbles during cleaning cycles for agitating the media to dislodge solid particles that settle downward though the bottom openings in the container.