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Means of reducing the consumption of orthophosphoric acid in ammonia capture by the circulatory phosphate method are presented. Essentially, the transportation system for the coke-oven gas is modified.
In the x-ray region the reflectivity of a superpolished surface strongly depends on its roughness. This effect may be used to obtain a two-dimensional map of the roughness spatial distribution for flat surfaces with an average roughness height of the order of one nanometer or less. The method described in the paper lies in the illumination of the sample by a highly collimated x-ray beam, and a linear...
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