Abstract: A device for measuring the amount of moisture in a medium that includes a transmission antenna that sends a signal as an electromagnetic wave, a reception antenna that receives the electromagnetic wave sent from the transmission antenna and transmitted through a medium, a measurement section that measures the electromagnetic wave propagated to the reception antenna, and a sensor casing. The sensor device further includes a transmission substrate that includes a plurality of wiring layers and a reception substrate that includes a plurality of wiring layers, or a first covering layer that partially covers an outer periphery of the transmission substrate and a second covering layer that partially covers an outer periphery of the reception substrate The coverings are formed of an electromagnetic wave absorption material. The sensor casing includes a transmission probe casing that accommodates the transmission substrate and a reception probe casing that accommodates the reception substrate.

Abstract: A method for charging a catalyst in particles to a tubular reactor having many vertically arranged reactor tubes of a definite length, which comprises inserting a wire formed in an optional shape into each reactor tube at the upper opening thereof, supplying the catalyst particles to the reactor tube to allow them to fall along the wire and gradually withdrawing the wire with or without vertical fluctuation as the height of the filled catalyst layer increases, thereby slowing down the falling velocity of the catalyst particles to prevent them from being crushed or powdered and at the same time obtaining a uniform bulk density of the filled catalyst.

Abstract: The process involves stripping ammonium nitrogens and organic materials, as gases, which are present in process waste waters to be discharged from plants wherein gases for use in ammonia synthesis are manufactured by reforming hydrocarbons with steam, decomposing the organic materials selectively in the presence of a catalyst at a temperature of about 120.degree. to 400.degree. C., mixing the remaining gases with the flue gases from said plants so as to provide a gaseous mixture having ammonia therein in an amount of about 0.3 to 10 moles per mole of nitrogen oxides present in the flue gases, reacting the gaseous mixture over a catalyst at a temperature of about 150.degree. to 700.degree. C. and oxidizing the unreacted ammonia, if any, in the presence of a catalyst at a temperature of about 150.degree. to 700.degree. C. to render the nocuous substances innocuous.