Abstract: A reformer configured to generate hydrogen gas by reforming a hydrocarbon; a hydrogen liquefier configured to generate liquid hydrogen by liquefying the hydrogen gas; a reservoir for storing the liquid hydrogen; and a heat exchanger configured to cause heat exchange between boil-off gas that occurs in the reservoir and carbon dioxide that occurs during a process of generating the hydrogen gas to liquefy the carbon dioxide.

Abstract: A triple containment tank includes an outer tank, an intermediate tank located in the outer tank, an inner tank located in the intermediate tank and storing a liquefied gas therein, and a pipe penetrating the outer tank, the intermediate tank, and the inner tank. The pipe is coupled to the outer tank through a first expandable pipe, is coupled to one of the inner tank and the intermediate tank through a second expandable pipe, and is joined to the other of the inner tank and the intermediate tank.

Abstract: A heat insulating vessel for a low temperature liquefied gas pump, which includes an inner tank configured to accommodate low temperature liquefied gas, an outer tank provided externally around the inner tank, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank has an outer tank upper part that is an upper end portion thereof, and an outer tank body other than the outer tank upper part. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner tank. The pump is fixed to the lid structure, and a suction pipe and a discharge pipe are insertedly fixed to the lid structure. A vacuum insulating layer is provided between the inner tank and the outer tank. With this heat insulating vessel for the low temperature liquefied gas pump, adiabaticity of the lid structure and maintainability of the pump are increased.

Abstract: A heat insulating vessel including an inner tank having a vertical axis to accommodate low temperature liquefied gas, an outer tank externally around the inner, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank having an upper part and an outer tank body. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner. The heat insulating vessel includes a first fastener to fasten with bolts, a first flange to upper ends of the inner and outer tanks upper part to a second flange to an outer circumferential part of the lid structure, and a second fastener to fasten with bolts, a third flange to an upper end of the outer tank body to a fourth flange to a lower end of the outer tank upper part. A vacuum insulating layer is formed between the inner and outer tanks.

Abstract: A reformer configured to generate hydrogen gas by reforming a hydrocarbon; a hydrogen liquefier configured to generate liquid hydrogen by liquefying the hydrogen gas; a reservoir for storing the liquid hydrogen; and a heat exchanger configured to cause heat exchange between boil-off gas that occurs in the reservoir and carbon dioxide that occurs during a process of generating the hydrogen gas to liquefy the carbon dioxide.

Abstract: A heat insulating vessel including an inner tank having a vertical axis to accommodate low temperature liquefied gas, an outer tank externally around the inner, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank having an upper part and an outer tank body. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner. The heat insulating vessel includes a first fastener to fasten with bolts, a first flange to upper ends of the inner and outer tanks upper part to a second flange to an outer circumferential part of the lid structure, and a second fastener to fasten with bolts, a third flange to an upper end of the outer tank body to a fourth flange to a lower end of the outer tank upper part. A vacuum insulating layer is formed between the inner and outer tanks.

Abstract: A heat insulating vessel for a low temperature liquefied gas pump, which includes an inner tank configured to accommodate low temperature liquefied gas, an outer tank provided externally around the inner tank, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank has an outer tank upper part that is an upper end portion thereof, and an outer tank body other than the outer tank upper part. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner tank. The pump is fixed to the lid structure, and a suction pipe and a discharge pipe are insertedly fixed to the lid structure. A vacuum insulating layer is provided between the inner tank and the outer tank. With this heat insulating vessel for the low temperature liquefied gas pump, adiabaticity of the lid structure and maintainability of the pump are increased.

Abstract: A door-equipped housing includes a box body having an opening formed on one side thereof, and a door to close the opening, the door being supported by the box body to be rotatable about a rotational axis. The box body has a projecting portion formed on an inside of a wall of the box body extending from the opening toward a deep side of the box body. The door includes a hook portion to engage the projected portion for preventing the door from opening, the hook portion being located on a deeper side of the box body than the projecting portion as the door closes the opening, and a flexible part extending in a direction away from a surface of the wall having the projected portion formed thereon as the door closes the opening. The flexible part bends together with a movement of the hook portion to climb over the projecting portion during an opening/closing operation of the door.

Abstract: A door-equipped housing includes a box body having an opening formed on one side thereof, and a door to close the opening, the door being supported by the box body to be rotatable about a rotational axis. The box body has a projecting portion formed on an inside of a wall of the box body extending from the opening toward a deep side of the box body. The door includes a hook portion to engage the projected portion for preventing the door from opening, the hook portion being located on a deeper side of the box body than the projecting portion as the door closes the opening, and a flexible part extending in a direction away from a surface of the wall having the projected portion formed thereon as the door closes the opening. The flexible part bends together with a movement of the hook portion to climb over the projecting portion during an opening/closing operation of the door.

Abstract: A speaker apparatus comprises a slit structure, wherein the slit structure including a plurality of plate-shaped parts each of which extends so that a plurality of slits are formed, a plurality of fold-back parts each of which is folded back from an end of the plate-shaped part on the side of the speaker toward a side of the front surface of the housing, so that the plurality of slits are formed, and a drain part that is arranged on a side of one of the two side surfaces of the housing, and wherein each of a plurality of grooves formed by the plurality of plate-shaped parts and the plurality of fold-back parts communicates with the drain part and is inclined so that, in a posture of the slit structure when the operation panel is operated, liquid led from the plate-shaped parts flows to the drain part.

Abstract: A speaker apparatus comprises a slit structure, wherein the slit structure including a plurality of plate-shaped parts each of which extends so that a plurality of slits are formed, a plurality of fold-back parts each of which is folded back from an end of the plate-shaped part on the side of the speaker toward a side of the front surface of the housing, so that the plurality of slits are formed, and a drain part that is arranged on a side of one of the two side surfaces of the housing, and wherein each of a plurality of grooves formed by the plurality of plate-shaped parts and the plurality of fold-back parts communicates with the drain part and is inclined so that, in a posture of the slit structure when the operation panel is operated, liquid led from the plate-shaped parts flows to the drain part.

Abstract: An input/output unit includes: input/output subunits each including an input/output card that has front-side connectors, which are engaged with back-unit connectors on a back unit of a control device, mounted on a front edge of a substrate and has mounted on a rear edge of the substrate, rear-side connectors to be engaged with connectors of field devices and a card holder that has at a front side, guide shafts to be inserted into guide holes of the back unit and holds the input/output card; and a case which is formed with slots into which the input/output subunits are inserted with a gap, which is formed on a front plate with a long hole into which the back-unit connectors are inserted with a gap and with shaft holes through which the guide shafts are penetrated from inside with a gap, and which is attached to the back unit.

Abstract: A process for separating a cis isomer from a mixture of the cis isomer and a trans isomer of an azolylmethylcyclopentanol derivative of the formula (I): ##STR1## wherein, R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an alkyl group; each X represents a halogen atom, an alkyl group, a haloalkyl group, a phenyl group, a cyano group or a nitro group; n is an integer of from 0 to 5; A represents a nitrogen atom or a CH group; and each X may be identical or different when n is an integer of from 2 to 5, comprising the steps of dehydrating selectively the trans isomer in the presence of an acid and isolating the cis isomer.

Abstract: Biphenyl-4,4'-dicarboxylic acid is prepared by isolating a mixture of diisopropylbiphenyls from a reaction mixture obtained by reacting biphenyl with propylene, crystallizing 4,4'-diisopropylbiphenyl from the mixture of diisopropylbiphenyls, and oxidizing 4,4'-diisopropylbiphenyl or an oxidation intermediate thereof with molecular oxygen in the presence of an oxidation catalyst, which comprises a cobalt catalyst and/or manganese catalyst, in a solvent containing at least 50 wt. % of an aliphatic mono- carboxylic acid having up to 3 carbon atoms.

Abstract: Disclosed in the present invention is a process for producing 2,6-naphthalenedicarboxylic acid comprising oxidizing 2,6-diisopropylnaphthalene or its partially oxidized intermediate with molecular oxygen in a solvent containing at least 50% by weight of an aliphatic monocarboxylic acid, having not more than three carbon atoms, in the presence of a catalyst composed of (i) a heavy metal comprising cobalt and/or manganese and (ii) bromine, and a salt of an inorganic acid having an acid dissociation constant Ka smaller than 1.34.times.10.sup.-5 (at 25.degree. C.) and a vapor pressure lower than that of the aliphatic monocarboxylic acid used as the solvent. According to the process of this invention, 2,6-naphthalenedicarboxylic acid of high bulk density can be obtained in a high yield and with high purity.