Abstract: A method of exterminating organisms is provided utilizing heated circulating air. First, a determination is made as to which enclosed areas of the building or other structure are to undergo extermination. This step defines an application zone. Next, a desired elevated temperature limit is established for heated air that is to be circulated through the application zone. Heaters are provided in airflow communication with the application zone, and circulation fans are positioned throughout the application zone to move the heated air for proper heat distribution. The heaters utilize an amount of recirculated air already present in the application zone to cut down on the amount of energy needed to raise the air temperature within the application zone towards the desired elevated temperature limit, and to eliminate the need for high CFM airflow heaters to achieve air temperature elevation.

Abstract: Rotatable lifting surface devices, such as propellers, impellers, and turbines, and blades for such devices use camber profiles and pitch distributions to obtain performance from flexible devices and blades, made from materials like polymers and polymer-composites and even metals, that is substantially the same as the performance of stiff devices and blades, usually made from materials like steel and aluminum.

Abstract: A system 100 for wireless communication is provided. The system 100 includes first communication device 110A operable to transmit a message 300 according to a new protocol. The new protocol having a header 302 including a first rate field and a first length field, a header extension 304 including a second rate field and a second length field, and a data 306. When the message 300 is received by a legacy communication device 102 which is operable to receive a portion of the message 300 according to a legacy protocol, the legacy communication device 102 refrains from transmitting for a duration indicated by the combination of the first rate field and the first length field. The system 100 also includes a second communication device 110B operable to receive the message 300 according to the new protocol. A method of communicating to maintain compatibility with legacy devices is also provided.

Abstract: System and method for enabling the low power detection of a transmitted sequence. A preferred embodiment comprises the replacement of a portion of a preamble (after the application of any needed scrambling) with an expected sequence field (such as the expected sequence field 410). The expected sequence field may contain a sequence of values known at a receiver or a periodic sequence. The addition of the expected sequence field does not affect the length of the preamble and is compatible with existing receivers.