Abstract: A biopsy probe includes an impedance probe slidably disposed within a biopsy needle.

Abstract: The present invention provides an isothermal port and method for a microwave network analyzer and more particularly an isothermal port and method to control the temperature of microwave standards to 23″ 0.050° C. A test port adapter is used to adapt the test port connector to a DUT (device under test, which might be a standard connector). A thermoelectric cooler surrounds the test port adapter in order to precisely control its temperature. By controlling the temperature of the adapter, the temperature of the DUT is controlled since there is good heat conduction between the DUT and the test port adapter. The standards quickly attain the temperature of the test port adapter (less than 2 minutes, 1 minute typical). The system includes a computer, one or more thermoelectric coolers, a heatsink, a split thermal mass that has a through hole for the test port adapter, a power supply, a PRTD (Platinum Resistance Thermal Detector), and an ohmmeter capable of measuring using 4 wire Ohms.

Abstract: A page turning device. Ferrous flat plate members are detachably secured to the pages to be turned of a book. A magnet member is carried by an elongate arm member that is pivotally mounted to swing in a plane. In a first embodiment, a spring member under load urges the arm member to swing in its plane to an equilibrium position, carrying a magnetically-engaged flat plate member and hence a page member with it. A stop member maintains the arm member in its nonequilibrium position until the musician desires the page to turn; a latch member is activated to transiently displace the stop member from its stopping engagement with the arm member. The musician thereafter returns the arm member to its first position. In a second embodiment, a motor causes the arm member to swing in its plane, carrying one page with it each time it travels from its first to its second position.