摘要:
L'invention concerne un appareil respiratoire à fonctionnement en circuit fermé. L'appareil comprend un sac respiratoire constituant un faux poumon (5), une cartouche filtrante (4) contenant une substance apte à transformer en oxygène le gaz carbonique des gaz expirés, une éponge thermique (3) apte à absorber par effet capacitif de la chaleur des gaz provenant de la cartouche filtrante et apte à se refroidir au contact des gaz expirés qui le traversent, le faux poumon (5) étant muni d'un moyen d'admission (6) pour admettre l'air extérieur dans le faux poumon lorsque la pression dans le faux poumon est inférieure à la pression extérieure, et l'appareil comprenant un filtre à carbone actif (2), ledit filtre (2), l'éponge thermique (3) et la cartouche filtrante (4) étant placés dans cet ordre sur le trajet des gaz expirés et dans l'ordre inverse sur le trajet des gaz inspirés.
摘要:
A retaining wall kit (10) is made up of a plurality of molded blocks (12, 14, 16), some having different thicknesses and some having different lengths. Keyhole-slots (30) may be provided at the rear face (20) of the molded blocks (12, 14, 16), each keyhole (30) being proportionally sized inwardly of the rear face (20) of the block such that a retaining member (36) fitted within the keyhole-slot (30) projects downwardly from the one molded block (16) to engage the rear face (20) of an adjacent molded block (14) so as to space the molded blocks in a regular sloped position such that the intersection of the front (18) and top (22) faces of each molded block (12, 14, 16) is in a common plane.
摘要:
A valve (7) is provided in an exhaust path (2) of an internal combustion engine. A valve element (7a) of the valve is slidably engaged in a valve guide (8) between opened and closed positions of the valve (7). A sealing portion (20) such as an outer flange (19) of a valve stem (7a) of the valve element (7) is engaged on the end (8a) of the valve guide (8) in the opened position to prevent leakage of high temperature gas.
摘要:
Object: to develop a method of reducing internal defects in continuous casting of thin cast pieces to improve a yield of manufacture. Constitution: after casting a cast piece, of which central portions at the short sides after casting protrude 5 to 10 nm beyond end portions of the cast piece with cooling at short sides controlled, the cast pieces are rolled with a rolling reduction of 10 to 45 % of a thickness of the cast piece while a thickness of an unsolidified phase in the cast piece at the shorter sides amounts to 50 to 80% of a thickness of the cast piece.
摘要:
Plant for cleaning gases (1) from an incinerator (3) of lightly radioactive waste. The plant includes a cooler-condenser (6, 100) for cooling gases (1) to a temperature lower than the dew point, a heater (300) for raising the temperature of the gases as they are discharged from the cooler-condenser (6, 100), a filter (200) for recovering solid particles downstream of the heater before the gases are discharged into the atmosphere, a unit (30) for treating condensates, and capable of precipitating radioactive heavy metals for recovery of a radioactive precipitate and an aqueous solution, and a unit (36) for crystallizing salts and concentrating them to dryness in an aqueous solution and recovering water to be recycled in the plant (2).