Abstract: A system (230) for voice browsing utilizing a telecommunication network (24) is provided. The system (230) includes a subscriber unit (30) and a system server (242). The subscriber unit (30) is configured to generate an origination packet (50) containing a voice frame (54), and to transmit the origination packet (50) utilizing a wireless non-circuit-switched service (106) of network (24). The subscriber unit (26) and the system server (242) are coupled through a cellular telephone site (234) of the network (24).

Abstract: A TE0&ggr;&dgr; mode dielectric resonator (12) includes a cylindrical dielectric disk (32, 32′, 32″) having top and bottom ends (20, 22) spaced apart by a closed curve wall (24). The dielectric disk has an effective dielectric constant greater than 40. An axially aligned hole (36) is formed through the disk (32) between the top and bottom ends (20, 22). A conductive wall (34, 34″) is formed at or slightly beyond the wall (24) but does not cover the top and bottom ends (20, 22). The hole (36) has a preferred diameter between 0.21 and 0.4 times the diameter of the disk (32, 32′, 32″). The disk may be configured as a heterogeneous composite of dissimilar materials which exhibit increasing dielectric constant at increasing radial distance and increasing Q at decreasing radial distance.

Abstract: A sampling device for sealed positioning within the casing of a well contains a stripping chamber for stripping a ground water sample of its volatile compounds at or near the point of collection. In one embodiment, the stripping chamber includes a piston which is raised above the top surface of the sample to create a head space, and an injector for injecting inert gas into the sample, causing the volatile compounds to be released into the head space, whereupon they exit the chamber via a vapor outlet duct leading out of the well. In a second embodiment, the stripping chamber includes a tube having a sidewall formed of a semi-permeable membrane, and an injector which injects an inert gas into the bore of the tube. The device may also include a sensor mounted within the stripping chamber, and a valve for directing a calibration gas into the chamber.