Nissan Motor Company Limited

Nippon Oil Company

Nippon Petroleum Refining Company, Limited

Mitsuo Hashimoto

Hiroaki Harata

Hiroshi Tabata

Akinori Odan

Jun Uehara

Hirsohi Tabata

Fumio Mama

Yasuo Watanabe

A process of regenerating catalysts is carried out by removing precipitates of carbonaceous materials from the catalyst. This process comprises contacting a deteriorated catalyst with a nitrogen oxide gas or a nitrogen oxide-containing gas at a temperature ranging between 200.degree. C. and 800.degree. C.

Process of regenerating solid catalysts

A method for evaluating a gloss and brightness character of a coated paint film. The idea of the gloss and brightness cahracter is classified into three feelings, i.e., a smooth feeling, a thickness feeling and a gloss feeling. Three frequency regions for the respective three feelings are selected to be in well correlation to organoleptic values which are for the respective three feelings. In the evaluating method, the degree of a surface roughness of the coated paint film is converted into frequency components. Then the frequency regions are abstracted from the frequency components. The frequency regions are numerically estimated. Finally, the gloss and brightness character of the coated paint film is evaluated in accordance with the numerically estimated frequency regions.

Method and system for evaluating gloss and brightness character of

A method for evaluating a gloss and brightness character of a coated paint film. The idea of the gloss and brightness character is classified into three feelings, i.e., a smooth feeling, a thickness feeling and a gloss feeling. Three frequency regions for the respective three feelings are selected to be in well correlation to organoleptic values which are for the respective three feelings. In the evaluating method, the degree of a surface roughness of the coated paint film is converted into frequency components. Then the frequency regions are abstracted from the frequency components. The frequency regions are numerically estimated. Finally, the gloss and brightness character of the coated paint film is evaluated in accordance with the numerically estimated frequency regions.

The concentration of nitrogen oxides contained in exhaust combustion gases is decreased by feeding into the combustion system within a heating furnace the combination of an ammonium compound and a phenol compound, the combination of Fluid Catalytic Cracking gasoline tank bottom water or water obtained after washing Fluid Catalytic Cracking gasoline and an ammonium compound, or FCC overhead condensate.

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Yokohama, Japan

Mitsuo Hashimoto