Abstract: Methods for demineralizing bone are provided. In some embodiments, the methods include demineralizing the bone in a demineralization medium and separating the bone into particles during demineralization. In other embodiments, the methods include placing the bone in a demineralization medium and treating the demineralization medium while the bone is in the demineralization medium to optimize the demineralization process.

Abstract: Corrosion resistance of valves or fittings exposed to corrosive attack by the environment in which they are normally used can be improved by covering those portions of the valve or fitting of thinner cross-section by a thin metal sleeve fabricated from an alloy resistant to corrosive attack by the environment.

Abstract: A process for enhancing heat transfer between combustion products formed in a fluidized bed combustion (FBC) reactor and the water-containing tubes surrounding the reactor wherein particles of an inert material, e.g., mineral calcium sulfate (gypsum), having a spheroidal shape ranging in size from about 50 to 1000 .mu.m and having a Moh's hardness of between 2.0 and 4.0 are introduced into the reactor in the presence of a solid fuel and an oxygen-containing gas. Introduction of such particles into the FBC reactor increases the particle density within the reactor thereby increasing radiant and convective heat transfer between the circulating bed and the surrounding water cooled walls. The improved process allows more precise control of the operating temperature regime. Erosion of the reactor walls is also substantially reduced.

Abstract: A method of drying rock wool, used to insulate cryogenic equipment such as a cold box, comprising evaporation with a CO.sub.2 purge during the defrost cycle.

Abstract: The present invention involves a process for removing nitrogen oxides from an off gas stream, such as nitric acid plant tail gas. The off gas is scrubbed with concentrated nitric acid to remove nitrogen oxides to a concentration below about 200 ppm. The nitric acid used in the scrubbing step is subsequently stripped of recovered nitrogen oxides which can be recycled back to a nitric acid plant. The oxidized nitric acid is recovered as concentrated nitric acid which can be used in the initial scrubbing step and/or recovered as product.

Abstract: Lithographic printing plates of aluminum or aluminum alloys are provided with an anodized surface layer, to which a photosensitive layer may be directly applied, which displays excellent adhesion and durability in use. For this purpose, anodization is carried out with an aqueous solution containing a polybasic mineral acid such as sulfuric and a higher concentration of a polybasic aromatic sulfonic acid containing at least one additional nuclear acidic substituent, preferably two, selected from the group consisting of a carboxylic acid group and a phenolic hydroxyl group.

Abstract: The present invention consists of an aluminum alloy having a high fatigue strength which is particularly suited for use in the fabrication of printing plates for offset lithography. The alloy contains from 0.2 to 0.75% magnesium, from 0.45 to 0.7% copper, from 0.1 to 0.7% iron and up to 0.3% silicon. The alloy, when processed according to the process of the present invention possesses a uniquely high fatigue strength.