Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: A portable water filter including a plurality of different filter medias. One embodiment includes two filter exhibiting a synergistic effect on filtration. Another embodiment provides higher than normal pH water to simply removal; of dissolved metals. Still another embodiments meets specified performance parameters. The filters are usable in hand held water purifiers, gravity feed filtration systems, and personal hydration systems. The water filter is lightweight to facilitate being carried in the field by a person for extended periods.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.

Abstract: A portable modular water heater system having a heat exchanger and a fluid heating channel for heating water from a reservoir and for optionally producing purified potable water. Optionally, a thermoelectric module is included in the system for producing an electric current usable to rechargeable batteries, drive pumps, or other devices. When the heat exchanger module is exposed to a heat source, heat absorbed by the heat exchanger is transferred to the fluid heating channel, heating the water. The heated water is forced into an upper portion of the reservoir. A condenser module is optionally coupled to the reservoir to condense steam in the upper portion. The thermoelectric module produces an electrical current when exposed to a temperature differential between the reservoir's cool water and the heat exchanger. A portable microclimate heating system, such as a jacket with tubing, can be heated with the heater system.

Abstract: A method and apparatus for purifying water by using thermal and/or thermocatalytic processes. The method and apparatus are particularly useful for processing impure water to remove and/or deactivate toxic inorganic, organic, and/or biological species such as Sarin, mustard gas, phosgene, cyanogen chloride, anthrax, E. coli, Giardia cysts, salmonella, hepatitis, and Norwalk viruses. In the thermal process, contaminated water is heated (preferably superheated) forming steam, whereby a majority of inorganic and biological species are removed or deactivated from the water. The steam is then condensed, forming liquid purified water. In the thermocatalytic process, the steam is brought into contact with a hydrolysis catalyst, preferably in the form of a coated surface or replaceable catalyst element.

Abstract: A portable modular water heater system having a heat exchanger and a fluid heating channel for heating water from a reservoir and for optionally producing purified potable water. Optionally, a thermoelectric module is included in the system for producing an electric current usable to rechargeable batteries, drive pumps, or other devices. When the heat exchanger module is exposed to a heat source, heat absorbed by the heat exchanger is transferred to the fluid heating channel, heating the water. The heated water is forced into an upper portion of the reservoir. A condenser module is optionally coupled to the reservoir to condense steam in the upper portion. The thermoelectric module produces an electrical current when exposed to a temperature differential between the reservoir's cool water and the heat exchanger. A portable microclimate heating system, such as a jacket with tubing, can be heated with the heater system.