Abstract: A color hazing or decoloring agent including at least one compound selected from compounds represented by formula (1) and compounds represented by formula (2), and used for color hazing or decoloring of a fabric printed or dyed with a disperse dye: R1OOC—X—COOR2??(1) Y1O-(AO)n—Y2??(2) wherein, in formula (1), X is an alkylene or alkenylene group of 2 to 4 carbon atoms, R1 is an alkyl group of 1 to 4 carbon atoms and R2 is an alkyl group of 1 to 4 carbon atoms, and in formula (2), AO is an alkyleneoxy group of 2 to 3 carbon atoms, n is an integer of 1 to 3, Y1 is a hydrogen atom or an R3CO group, R3 is an alkyl group of 1 to 4 carbon atoms, Y2 is a hydrogen atom or an R4CO group, and R4 is an alkyl group of 1 to 4 carbon atoms.

Abstract: A box-shaped housing has a first surface including an air inlet and a second surface which is different from the first surface. A cooling fan is provided on the second surface and configured to discharge air from the second surface. A partition plate is configured to partition a space inside the housing into a first space in contact with the first surface and a second space in contact with the second surface. The partition plate includes at least one opening to allow the cooling air generated by the cooling fan to flow through the first space into the second space. At least one semiconductor unit is disposed in the first space and cooled by the cooling air. A reactor unit is disposed in the second space to face the at least one opening.

Abstract: Molten glass has a liquid level located at a higher level than lower ends of an uprising pipe and a downfalling. In addition, a contacting portion of the uprising pipe or the downfalling pipe and a brick receiver on an upstream or downstream pit for supporting the uprising or downfalling pipe, or a joint in the brick receiver is filled with sealing material.

Abstract: A vacuum degassing apparatus comprises a path made of dense refractory bricks, the path including an inner surface brick layer, the refractory bricks in the inner surface brick layer having a flatness of 0.5 mm on contacting surfaces with one anther, and the path including a backup brick layer and a ramming material filling layer besides the inner surface brick layer.

Abstract: A vacuum degassing apparatus includes a lifter to absorb deformation in a vertical direction due to thermal expansion of the vacuum degassing, a slider to absorb thermal expansion of the vacuum degassing vessel in a longitudinal direction thereof, or a thermal expansion absorbing layer to absorb thermal expansion of an uprising pipe and a downfalling pipe in a cross-sectional direction, or a thermal expansion absorbing layer provided along a portion of an outer surface of the vacuum degassing vessel in a height direction.

Abstract: Molten glass has a liquid level located at a higher level than lower ends of an uprising pipe and a downfalling. In addition, a contacting portion of the uprising pipe or the downfalling pipe and a brick receiver on an upstream or downstream pit for supporting the uprising or downfalling pipe, or a joint in the brick receiver is filled with sealing material.

Abstract: Molten glass has a liquid level located at a higher level than lower ends of an uprising pipe and a downfalling. In addition, a contacting portion of the uprising pipe or the downfalling pipe and a brick receiver on an upstream or downstream pit for supporting the uprising or downfalling pipe, or a joint in the brick receiver is filled with sealing material.

Abstract: Before operating a vacuum degassing apparatus for molten glass which has paths for molten glass made of refractory material, fuel is burned by temperature rising burners, and the burned gas is exhausted through an exhaust pipe which communicates to an upper end of a vacuum degassing vessel.

Abstract: A method of producing magnetic soft ferrite of the general formula: M.sub.x Zn.sub.1-x O.Fe.sub.2 O.sub.3 (M stands for one or more of Cu, Mn, Ni, Fe, Co and Mg; and X is in the range of 0.4-0.7) by melting and casting is disclosed. Melting is carried out under controlling evaporation of Zn-component in the material of the ferrite by disposing Zn-source around the material, sealing up the melting chamber as tight as possible, or under a pressurized gas atmosphere so as to obtain the product having uniform and precise composition.

Abstract: Vascular X-ray contrast media comprise ferrite powder coated with a negatively charged colloid such as silicate colloid, gold colloid, silver colloid or platinum colloid. Such media can be used for the medical X-ray diagnosis of small blood vessels. By applying an external magnetic field, the media can be maintained in the vessel or organ being examined.