Techniques for determining search query information for an advertising campaign and communicating the search query information to a sponsor of the advertising campaign are described. The portable subatmospheric pressure mechanism includes a housing, a subatmospheric pressure source disposed within the housing and in fluid communication with the wound dressing to supply subatmospheric pressure to the wound dressing and a power source mounted to or within the housing for supplying power to actuate the subatmospheric pressure source. An application may examine the configuration file, execute one or more queries specified by the configuration file, and write the data which is collected to one or more data structures employed by a transport mechanism in transferring information to the information collection facility. Particularly beneficial versions utilize a plurality of smaller molecular sieve beds in series and use heat generated during desorption and regeneration of the molecular sieve beds as an energy source to aid in the vaporization step. Each metal fiber of the first array of metal fibers and the second array of metal fibers includes a plurality of metal particles defining a micro-porosity.