Abstract:
A fuel cell assembly has a housing defining an electricity generation/combustion chamber, and electricity generation/combustion means disposed within the housing. A fuel gas and an oxygen-containing gas are supplied to the electricity generation/combustion means, and a combustion gas formed within the electricity generation/combustion chamber is discharged from the electricity generation/combustion chamber. A heat exchanger having a first channel and a second channel is disposed on at least one surface of the housing, the combustion gas is discharged from the interior of the electricity generation/combustion chamber through the first channel of the heat exchanger, and one of the oxygen-containing gas and the fuel gas is supplied to the electricity generation/combustion means through the second channel of the heat exchanger. A plurality of electricity generation units are arranged in parallel within the housing, and each of the electricity generation units includes a cell stack constituting the electricity generation/combustion means.
Abstract:
A fuel cell module includes: in a casing, a fuel cell stack that is formed by stacking a plurality of unit cells; and an oxidant gas distributing member that is disposed at a side surface, that extends in a stack direction, of the fuel cell stack, that extends in a direction from one end to another end of each of the unit cells, and that supplies the oxidant gas along the oxidant gas distributing member from the one end to the another end to supply the oxidant gas to the another end of each unit cell. The oxidant gas distributing member includes a heat exchange restraint portion that restrains heat exchange between the unit cells and the oxidant gas in at least one of end portions of the fuel cell stack in the stack direction, in comparison with the heat exchange thereof in other portion in the fuel cell stack.
Abstract:
A baseball includes an inner core, and an outer layer covering the outer circumferential surface of the inner core. The inner core has a surface hardness of not less than 60 and not more than 80 in Asker C hardness, and has an elastic modulus of not less than 0.6 MPa and not more than 1.0 MPa. In this way, a baseball can be obtained which can achieve a trajectory comparable to that of a ball for hardball after hitting and which can achieve an impact force comparable to a ball for rubber-ball baseball.
Abstract:
A phase-change channel transistor includes a first electrode; a second electrode; a memory layer provided between the first and second electrodes; and a third electrode provided for the memory layer with an insulating film interposed therebetween, wherein the memory layer includes at least a first layer formed from a phase-change material which is stable in either an amorphous phase or a crystalline phase at room temperature and a second layer formed from a resistive material, and wherein the resistance value of the second layer is smaller than the resistance value of the first layer in the amorphous phase, but is larger than the resistance value of the first layer in the crystalline phase.
Abstract:
A radio wave arrival status estimating system characterized by having an estimating means that estimates whether the physical characteristic of a radio wave received at the reception point of a radio system to be evaluated has reached the minimum allowable level for determining the characteristic of the radio system; that estimates an arrival status of the radio wave at the reception point by applying a first radio wave propagation status estimating technique to the reception point when estimating that the physical characteristic has reached the minimum allowable level; and that estimates an arrival status of the radio wave at the reception point by applying a second radio wave propagation status estimating technique to the reception point when estimating that the physical characteristic has not reached the minimum allowable level.
Abstract:
To provide a fuel cell module structure including a heat exchanger capable of preventing leakage of oxygen containing gas in a flow path and reducing the cost. The fuel cell module, which includes: a power-generating chamber that receives fuel cells; and a casing having a generally rectangular shape enclosing the power-generating chamber, wherein right and left side walls and an upper wall of the casing are hollow walls constituted of an outer shell member and an inner shell member disposed parallel to each other with a predetermined distance therebetween to form a reaction gas circulation space, each of the outer shell member and the inner shell member is formed in a U-like shape in cross section, a reaction gas introduction member vertically extending downward from the inner shell member of the upper wall into the power-generating chamber and being communicated with the reaction gas circulation space to introduce a reaction gas into the power-generating chamber.
Abstract:
A radio wave characteristic estimation system and its method estimate radio wave propagation characteristics in an investigation object area in a part of a coverage area of a wireless system, which becomes an object of the estimation, at high speed and with high precision, when the coverage area is wide. In a three-dimensional area including a plurality of contents, a transmission source and the investigation object area to be investigated as to the propagation environment of radio waves emitted from the transmission source are provided. When estimating a radio wave propagation environment in the investigation object area, a general radio wave propagation situation acquisition unit finds general radio wave propagation situation within the investigation object area or in the vicinity thereof. A pseudo transmission source preparation unit prepares finite pseudo transmission sources to simulate the general radio wave propagation situation. A radio wave propagation estimation unit conducts detailed radio wave propagation estimation by designating the finite pseudo transmission sources as new transmission sources and an analysis area including the investigation object area as an analysis object.
Abstract:
Disclosed is a catching tool for baseball or softball including a ball receiving portion covering the palm side of a user's hand when wearing the tool and containing a ball receiving surface for receiving a ball, a resin layer that is selectively formed on the surface of the ball receiving portion and can be deformed along a surface of the ball when catching the ball, and a back portion for covering the back of the user's hand. On the ball receiving portion, various resin layers may be optionally formed, examples of the resin layers including a large-width resin layer, and a small-width resin layer having a convex regions.
Abstract:
A fuel cell stack including an array of a plurality of fuel cells in which power generation efficiency can be increased by uniformizing temperature distribution in a direction of arrangement of fuel cells, is provided. In a fuel cell stack including an array of a plurality of fuel cells electrically connected in series to each other, the fuel cells each being formed by laminating a fuel-side electrode layer, a solid-state electrolytic layer, and an air-side electrode layer one after another on a support substrate, an interval between a plurality of the fuel cells arranged in a midportion thereof in a direction of arrangement of the fuel cells is wider than an interval between a plurality of the fuel cells arranged at either end thereof in the direction of arrangement of the fuel cells. The temperature distribution of the fuel cell stack can be made as nearly uniform as possible.