Abstract: A paint brush storage and protection device includes an open well having an upstanding wall ending in an upper wall, the upper wall being continuous from one side of an opening to another; a top with an open channel extending around the perimeter of the top except at and end of an extension area; a hinge connecting the open well to the top; a seal located in the opening; first and second latching mechanisms associated with the open well and top; and a magnet. A paint brush may be placed within the well and the top closed by deflection of the hinge so the upper wall forms a generally airtight connection with the open channel and the seal closes the opening to secure and protect the paint brush while the magnet holds the paint brush in a fixed position relative to the device.

Abstract: A paint brush storage and protection device includes an open well having an upstanding wall ending in an upper wall, the wall being continuous from one side of an opening to another; a top with an open channel extending around the perimeter of the top except at and end of an extension area; a hinge connecting the open well to the top; a seal located in the opening; a first latching mechanism associated with the open well and top opposite the hinge; and a second latching mechanism associated with the open well and top in the area of the opening. A paint brush may be placed within the well and the top closed over the well by deflection of the hinge so the upper wall forms a generally airtight connection with the open channel and the seal closes the opening to secure and protect a paint brush.

Abstract: An apparatus and process for the chemical vapor deposition of a matrix into a preform having circumferentially wound ceramic fibers, comprises heating one surface of the preform while cooling the other surface thereof. The resulting product may have fibers that are wound on radial planes or at an angle from the radial planes. The fibers can also be precoated with pyrolytic carbon before application of the matrix. The matrix is applied by passing reactant gas through the preform thereof to the other side thereof for the initial deposition of matrix near such other surface of the preform. The matrix fills in the preform from the other side surface thereof to the surface of the side of application thereof until a desired amount of matrix has been deposited.

Abstract: A chemical vapor deposition (CVD) process for preparing fiber-reinforced ceramic composites. A specially designed apparatus provides a steep thermal gradient across the thickness of a fibrous preform. A flow of gaseous ceramic matrix material is directed into the fibrous preform at the cold surface. The deposition of the matrix occurs progressively from the hot surface of the fibrous preform toward the cold surface. Such deposition prevents the surface of the fibrous preform from becoming plugged. As a result thereof, the flow of reactant matrix gases into the uninfiltrated (undeposited) portion of the fibrous preform occurs throughout the deposition process. The progressive and continuous deposition of ceramic matrix within the fibrous preform provides for a significant reduction in process time over known chemical vapor deposition processes.

Abstract: Microspheres for nuclear waste storage are formed by gelling droplets containing the waste in a gelation fluid, transferring the gelled droplets to a furnace without the washing step previously used, and heating the unwashed gelled droplets in the furnace under temperature or humidity conditions that result in a substantially linear rate of removal of volatile components therefrom.

Abstract: This invention relates to a method for determining defective final layers of carbon on triso-coated fuel particles and the like. Samples of the particles are subjected to a high temperature treatment with gaseous chlorine and thereafter radiographed. The chlorine penetrates through any defective carbon layer and reacts with the underlying silicon carbide resulting in the volatilization of the silicon as SiCl.sub.4 leaving carbon as a porous layer. This porous carbon layer is easily detected by the radiography.