Abstract: Flexible catheters adapted to be inserted into a body to deliver high-voltage, fast (e.g., microsecond, sub-microsecond, nanosecond, picosecond, etc.) electrical energy to target tissue may include a plurality of conductive layers, that may be coaxial. These catheters and method of using them to treat tissue are configured to reduce or avoid arcing.

Abstract: Flexible catheters adapted to be inserted into a body to deliver high-voltage, fast (e.g., microsecond, sub-microsecond, nanosecond, picosecond, etc.) electrical energy to target tissue may include a plurality of conductive layers, that may be coaxial. These catheters and method of using them to treat tissue are configured to reduce or avoid arcing.

Abstract: A method is provided of installing flowable fibrous insulation in the cavity between the studs of a wall under construction, the wall cavity being open on one side and otherwise enclosed. The method includes covering the open side of the wall cavity with a removable pressure plate to substantially enclose the wall cavity. The pressure plate contains at least one aperture, preferably positioned proximate the top of the pressure plate. The wall cavity is substantially filled with flowable fibrous insulation delivered through the aperture in the pressure plate. The pressure plate is removed, and subsequently the wall cavity is enclosed by addition of the interior wall surface. A blowing wool-grade glass fiber insulation can be used. The method permits construction of well-insulated exterior walls sheathed with a material having an integral vapor barrier and having a wall cavity filled with densely-packed loose-fill insulation. The method permits insulating any partially open cavity.

Abstract: Finely divided borides, carbides, and nitrides of metals of Groups III-VI of the Periodic Table, formed by reacting vaporous metal halide and a boron, carbon, or nitrogen source reactant at high temperatures, e.g., 1500.degree. C., are separated from gaseous reactor effluent stream at temperatures between about 200.degree. C. and 1500.degree. C. with the use of a porous sintered filter. By separating the finely divided product from the effluent stream before the stream cools to below about 200.degree. C., adsorption of impurities, e.g., unreacted metal halide or metal subhalides, on the product is reduced. The use of a filter, e.g., a porous sintered filter, avoids the size classification of product which may result when cyclones and a bag filter are used to collect product.