Abstract: An improved structure of a solid oxide electrolyte fuel cell (SOFC) is disclosed. A generating layer in the SOFC consists of three layers of a fuel electrode, an oxide layer and an oxygen electrode, and is shaped into a dimpled structure having recessed portions on its both surfaces. Protruded portions on the side of the fuel electrode are electrically bonded with an interconnector layer via a first conductive adhesive, while protruded portions on the side of the oxygen electrode of another generating layer are electrically bonded with the same interconnector layer via a second conductive adhesive. A plurality of generating layers and a plurality of interconnector layers are alternately stacked and they are electrically bonded in the above-described manner. Preferably the first conductive adhesive is made of material common to the fuel electrode and the second conductive adhesive is made of material common to the oxygen electrode.

Abstract: A solid electrolyte fuel cell power generating system comprising a solid electrolyte fuel cell containing an anode, an anode fuel inlet and an anode exhaust gas outlet, a fuel source in communication with the anode inlet, a cathode, a cathode oxidant inlet and a cathode exhaust oxidant outlet, an oxidant source in communication with the cathode oxidant inlet, and means for recycling at least part of an exhaust gas stream emanating from the anode exhaust gas outlet to the anode fuel inlet. Such means comprise a heat exchanger in communication with the anode exhaust gas outlet, a condenser in communication with the heat exchanger and a combustor in communication with the heat exchanger and the anode fuel inlet. Preferably, the system includes a reformer in communication with the anode exhaust gas outlet and the heat exchanger.

Abstract: A DC power source device in which the voltage dividing ratio of a voltage dividing circuit of an error detecting circuit is changed from a reference value to a value smaller than the reference value thereby to decrease the voltages of DC outputs. In the device, a bleeder circuit in which the connection and disconnection of a bleeder resistor are switchable, is connected to a reference DC output among the above DC outputs which is to be subjected to error detecting. After the voltage dividing ratio is changed to the smaller value, the bleeder resistor is connected to the reference DC output for a predetermined period of time.

Abstract: A system control circuit checks a memory for data therein through a memory control circuit upon a pickup reaching the end of the disk. When at least a predetermined quantity of data remains in the memory, signaling sound generating means produces a signaling sound three times and a display portion is caused to flash. On the other hand, if the quantity of data remaining in the memory is not greater than a predetermined amount, the sound generating means produces a prolonged signaling sound once and causes the display portion to flash. The display operation is terminated if no disk change is made within a specified period of time thereafter.

Abstract: A plurality of centering parts 13 corresponding to drill diameters are disposed in a drill centering tool 3 and the drill centering tool 3 is supported at the side of a drill polishing machine 1. A drill 2 to be polished can be easily and accurately centered in the centering part 13 of the drill centering tool 3. In particular, the drill 2 is centered by fitting the front end portion of the spiral drill groove 14 of the drill 2 to a centering pawl 15 of the drill centering tool 3, chucking the centered drill 2 in a drill chuck 4 of the drill polishing machine 1, and polishing by fitting the cutting edge 5 to be polished at the front end of the drill 2 to the polishing surface of a grinder. Even if the drill diameters are different, drills to be polished can be easily centered and polished.

Abstract: The present invention provides a laser ionization mass spectrometric apparatus comprising a sample introducing portion provided with a pulse valve which forms molecular jet, a pulsed laser beam oscillator, a vacuum ionization chamber or a corresponding portion thereto having a window capable of passing the laser beam radiated from the oscillator, and a mass spectrometer which analyzes the mass of molecules ionized by the laser beam, wherein said pulse laser oscillator has an ability of oscillating ultrashort pulsed laser beam having a peak output of 1 MW or more. The laser ionization mass spectrometric apparatus can use a turbo-molecular vacuum pump to evacuate the above vacuum ionization chamber and the above sample introducing portion can comprise two or more pinhole nozzles.

Abstract: An interconnector material for use in electrochemical cells having Y.sub.2 O.sub.3 -stabilized ZrO.sub.2 as a solid electrolyte, said interconnector material comprising a lanthanum chromite material of the following general formula:(La.sub.1-x Sr.sub.x)(Cr.sub.1-y M.sub.y)O.sub.3,where M is Zr or Ti, x is in the range of 0.1 to 0.2, and y is in the range of 0.05 to 0.2.

Abstract: The invention relates to a solid oxide electrolyte fuel cell (SOFC) which can be used as a cell for water electrolysis, CO.sub.2 electrolysis and other electrolyses, as well as for power generation. In a SOFC in which both surfaces of a power generation film comprising three layers of a fuel electrode, a solid electrolyte, and an oxygen electrode are formed with a number of dimples, the thickness of a yttria-stabilized zirconia film that constitutes the solid electrolyte is 5 to 100 .mu.m, and the thickness of an oxygen electrode material that constitutes the oxygen electrode which is provided on one side of the yttria-stabilized zirconia film is 200 to 2,000 .mu.m. As a result, the power generation performance can be greatly improved and a sufficiently strong oxygen electrode material prevents a thin yttria-stabilized zirconia film from being damaged in manual operations.

Abstract: A power generation layer includes three layers of a fuel electrode, a solid oxide electrolyte and an oxygen electrode. Both faces of the power generation layer are formed with a number of dimples that are shaped and arranged so as to satisfy (half dimple height)=3.2.times.(dimple diameter)-(half dimple pitch).+-.(dimple diameter).

Abstract: A noble solid electrolyte fuel cell includes a generating layer (5), an interconnector layer (9), and a support layer (10) disposed between the generating and interconnector layers. The interconnector layer comprises a fuel electrode (6), an interconnector material (7) and an oxygen electrode (8). The support layer (10) forms a fuel passage and an oxidizer passage, and supporting rods (15, 102) for gas sealing are disposed at both ends of the support layer. A sealing film (110) is cemented to the contact surfaces of the supporting rods (15, 102) between the generating layer and the interconnector layer, and this sealing film becomes soft or half melted during the operation of the fuel cell. This construction provides improved cell performances due to better sealing of gases even under large temperature differences. The use of finer particles near the surface of the solid electrolyte only is also disclosed.

Abstract: Superplastic aluminum alloy strips comprising 1.5 to 90% of magnesium, 0.5 to 5.0% of silicon, 0.05 to 1.2% of manganese, 0.05 to 0.3% of chromium and the balance consisting essentially of aluminum, and also a process for producing superplastic aluminum alloy strips comprising continuously casting and rolling a molten aluminum alloy containing 1.5 to 9.0% of magnesium, 0.5 to 5.0% of silicon, 0.05 to 1.2% of manganese and 0.05 to 0.3% of chromium, thereby obtaining a cast strip of 3 to 20 mm in thickness, homogenizing the cast strip at a temperature of 430.degree. to 550.degree. C., and subjecting the homogenized strip to cold rolling until the reduction ratio reaches up to a value of not less than 60%.

Abstract: Process for producing superplastic aluminum alloy strips comprising continuously casting and rolling a molten aluminum alloy containing 4.0 to 6.0% (by weight) of magnesium, 0.4 to 1.5% (by weight) of manganese, 0.05 to 0.2% (by weight) of chromium and less than 0.50% (by weight) of silicon, thereby preparing a cast strip of 3 to 20 mm in thickness, after subjecting the cast strip to annealing treatment at a temperature of 420.degree. to 530.degree. C., subjecting the annealed strip to the former step of cold rolling and intermediate annealing and then subjecting the intermediately annealed strip to the latter step of cold rolling until the reduction ratio reaches to a value of not less than 60%.

Abstract: An apparatus for arranging a plurality of different electric parts in a predetermined order for insertion into the substrate of a printed circuit board is disclosed. The apparatus has a plurality of cutter mechanisms arranged to receive respective tapes carrying respective electric parts. The cutter mechanism cuts the tape successively upon receipt of a control signal to sever the electrical parts one by one successively. The apparatus also has a plurality of carrier mechanisms arrayed on the periphery of a turn table which is arranged to be driven intermittently. When a carrier mechanism is positioned in front of the cutter mechanism having the desired electric part, the cutter mechanism is activated to sever the electric part and transfer the same to the carrier mechanism. Thus, the carrier mechanisms on the periphery of the turn table are loaded with respective electric parts.