Abstract: A gas compressor of the present invention includes a reciprocating member, an accommodation portion, and a sealing portion, and the accommodation portion includes a compression chamber that compresses a gas and a non-compression chamber that is separated from the compression chamber by the reciprocating member and the sealing portion. Further, since the compression chamber includes a suction line that suctions a hydrogen gas, a discharge line that discharges a compressed gas, a connection line that is connected to the accommodation portion and is used so that at least a part of a gas flows therethrough when a gas passing through the sealing portion from the compression chamber exists, a flowmeter that is provided in the connection line, and a determination unit that determines whether a flow amount measured by the flowmeter is equal to or larger than a predetermined threshold value, it is possible to easily determine the abrasion state of the sealing portion.

Abstract: Provided is a hydrogen station that supplies hydrogen to an external hydrogen tank, the hydrogen station including: a reciprocating compressor that is driven by a driver of which revolution is controllable; a cooling device that is capable of cooling hydrogen supplied from the reciprocating compressor to the hydrogen tank; a temperature sensor that detects an internal temperature of the hydrogen tank or a temperature of the hydrogen supplied to the hydrogen tank; and a control unit that controls the revolution of the driver based on the temperature detected by the temperature sensor.

Abstract: Provided is a hydrogen station that is used to charge hydrogen to a hydrogen tank mounted on a vehicle, the hydrogen station including: a compressor that compresses hydrogen; a lubricant cooling unit that cools the lubricant of the compressor while circulating the lubricant; a hydrogen cooling unit that is capable of cooling hydrogen which is not charged to the hydrogen tank mounted on the vehicle yet and is compressed by the compressor; a sensor that detects whether the vehicle approaches or reaches the hydrogen station; and a startup unit that starts up at least one of the lubricant cooling unit and the hydrogen cooling unit by a signal from the sensor.

Abstract: A vehicle boundary layer air flow control structure is provided with a vehicle body and a side view mirror. The vehicle body includes an exterior contoured surface with an air flow deflector. The side view mirror is attached to the vehicle body to provide a diagonally rearward direction to be viewed from a driver's seat. The air flow deflector has a downward air flow guiding surface provided in a vehicle body region of the exterior contoured surface of the vehicle body along which an air flow heading toward the side view mirror passes. The downward air flow guiding surface extends in an air flow direction of the air flow with respect to the side view mirror to divert the air flow underneath the side view mirror.

Abstract: A vehicle boundary layer air flow control structure is provided with a vehicle body and a side view mirror. The vehicle body includes an exterior contoured surface with an air flow deflector. The side view mirror is attached to the vehicle body to provide a diagonally rearward direction to be viewed from a driver's seat. The air flow deflector has an inward longitudinal air flow guiding surface provided in a vehicle body region of the exterior contoured surface of the vehicle body along which an air flow heading toward the side view mirror passes. The inward longitudinal air flow guiding surface extends in an air flow direction of the air flow with respect to the side view mirror to divert the air flow inward of the side view mirror with respect to a vehicle widthwise direction.

Abstract: A vehicle boundary layer air flow control structure is provided with a vehicle body and a side view mirror. The vehicle body includes an exterior contoured surface with an air flow deflector. The side view mirror is attached to the vehicle body to provide a diagonally rearward direction to be viewed from a driver's seat. The air flow deflector has a downward air flow guiding surface provided in a vehicle body region of the exterior contoured surface of the vehicle body along which an air flow heading toward the side view mirror passes. The downward air flow guiding surface extends in an air flow direction of the air flow with respect to the side view mirror to divert the air flow underneath the side view mirror.

Abstract: A vehicle boundary layer air flow control structure is provided with a vehicle body and a side view mirror. The vehicle body includes an exterior contoured surface with an air flow deflector. The side view mirror is attached to the vehicle body to provide a diagonally rearward direction to be viewed from a driver's seat. The air flow deflector has an inward longitudinal air flow guiding surface provided in a vehicle body region of the exterior contoured surface of the vehicle body along which an air flow heading toward the side view mirror passes. The inward longitudinal air flow guiding surface extends in an air flow direction of the air flow with respect to the side view mirror to divert the air flow inward of the side view mirror with respect to a vehicle widthwise direction.

Abstract: The Thread Data Base 1 holds a thread identifier to uniquely identify a thread in the system. The Check means 3 lets, when no thread being a target exist in the same processor, a trap (TRAP) 10 occur. The Issue means 2, when a thread being a target exists in the same processor, at a time of issuing a subsequent instruction, successively inputs a thread 9 to be executed next, as a thread serving as a target, into a pipeline. The Gate (G) means 11 uses data on the execution of a thread as an input for computation of a thread serving as a succeeding target. The Switch means 13 transfers data in a context of a thread to a context of a target thread without inputting the target thread as a non-executable thread into a pipeline while the thread is being executed.

Abstract: The Thread Data Base 1 holds a thread identifier to uniquely identify a thread in the system. The Check means 3 lets, when no thread being a target exist in the same processor, a trap (TRAP) 10 occur. The Issue means 2, when a thread being a target exists in the same processor, at a time of issuing a subsequent instruction, successively inputs a thread 9 to be executed next, as a thread serving as a target, into a pipeline. The Gate (G) means 11 uses data on the execution of a thread as an input for computation of a thread serving as a succeeding target. The Switch means 13 transfers data in a context of a thread to a context of a target thread without inputting the target thread as a non-executable thread into a pipeline while the thread is being executed.

Abstract: A magnetic disk tester has a head clamp (35, 218) to position a magnetic head (15, 289). The head clamp has a micromotion stage (55, 273) provided with a stage (59, 205) which is horizontally moved by a piezo-element (77). The magnetic head is attached to the piezo-stage (55, 273). On the head clamp (218), a reflective scale (222) is attached to a back face of the piezo-stage, and a laser head (217) is oriented toward the head clamp (218). According to a reflected laser beam from the reflective scale, the position of the magnetic head (289) is detected. An error signal indicating the difference between the detected position and a reference position is used to control the head clamp (218). The piezo-element can operate at high frequencies, to easily make the magnetic head trace a target track and improve the positioning accuracy of the magnetic head.

Abstract: The drinking cup for learning which can train babies in the drinking movement step-by-step in order to provide a baby, who is at the age of taking milk and taking the liquid food, the lessons of the technique for taking either liquids or the liquid food naturally without spilling them. The drinking cup for learning includes a main container 12 for containing liquid, the main container having at least a cup-shaped opening 12a and a drinking spout member 11 removably attached to the main container. The drinking spout member 11 includes an opening communicating with the main container and a top-opened guide means 14 provided with barrier portions 15 forming at least both side edges.

Abstract: A dielectric ceramic composition for radiofrequency applications has a crystalline primary component having a perovskite crystal structure, and an auxiliary component. The crystalline primary component is represented by the formula: (1−x)MeTiaO1+2a−xLn(Ma1/2Mb1/2)bO(3+3b)/2 wherein Me is at least one of Ca and Sr; Ln is a rare earth element; Ma is at least one of Mg and Zn; Mb is at least one of Sn and Zr; x represents a mole fraction of Ln(Ma1/2Mb1/2)bO(3+3b/2); and a and b represent molar ratios, wherein 0.95≦a≦1.05, 0.9≦b≦1.05, and 0.3≦x≦0.5. The auxiliary component includes B and Si. The composition can be sintered at 1,000° C. or less. An electronic component includes a ceramic element of the dielectric ceramic composition and conductors provided in the interior of the ceramic element.

Abstract: A high-frequency dielectric ceramic compact is provided which has a relative dielectric constant (∈r) of about 20 or less and a Q value of about 20,000 or more at 1 GHz, in which the temperature coefficient (&tgr;f) can be optionally controlled at about 0 (ppm/° C.). When the compact of the dielectric ceramic compact is represented by the formula aBaO.bMeO.cSbO3/2, 0.476≦a≦0.513, 0.160≦b≦0.175, and 0.324≦c≦0.350. In addition, when the compact of the dielectric ceramic compact is represented by the formula dBaO.eMeO.fSbO3/2.gTiO2, 0.476≦d≦0.513, 0.100≦e≦0.175, 0.200≦f≦0.349, and 0<g≦0.200.

Abstract: A high frequency ceramic compact includes Al, Ti and Mn as metallic elements and contains substantially no Al2TiO5 phase as determined by X-ray diffraction analysis and is obtained by firing at about 1310° C. or lower. A preferred high frequency ceramic compact is represented by the following formula and has a Q-value at 10 GHz of 10,000 or more: (100−x−y)AlO3/2−xTiO2−yMnO, wherein x and y are % by mole and x and y satisfy the following conditions: 3.0≦x≦9.0; and 0.1≦y≦1.0. These high frequency ceramic compacts have a relative dielectric constant of 20 or less, a Q-value at 10 GHz of 10,000 or more, and can optionally control the temperature coefficient of resonant frequency around 0 ppm/° C.

Abstract: A dielectric ceramic composition for radiofrequency applications has a crystalline primary component having a perovskite crystal structure, and an auxiliary component.

Abstract: A piezoelectric ceramic composition and a piezoelectric element in which cracks and chips are not likely to occur during working even if the thicknesses are reduced, are provided. The piezoelectric ceramic composition contains as a primary component, a complex oxide having a perovskite structure, composed of at least Pb, Zr, Ti, Mn, Nb and O, and represented by general formula ABO3, in which the total molar quantity of elements constituting A is smaller than the total molar quantity of elements constituting B, and Si is present as a secondary component at the content of about 0.010 wt % to 0.090 wt %, in terms of SiO2, relative to the primary component.

Abstract: A multi-processor computer system includes a plurality of computing cells, each of which include a processor, a memory and an interface unit. An interconnect device connects the computing cells. Each of the computing cells are provided with a network driver for the interconnect device so that the computing cells can communicate with each other by using a network protocol.

Abstract: A ceramic composition includes 100 parts by weight of a main component of the formula: xBaO-y{(1−&agr;)Sm2O3-&agr;Nd2O3}-zTiO2, and as secondary components, about 0.3 part by weight or less of a Mn compound in terms of MnO and about 1 part by weight or less of a Ta compound in terms of Ta2O5, wherein 13≦x≦23; 0<y≦12; 75≦z≦83; 0≦&agr;≦1; and x+y+z=100. Further, about 1.5% by mole or less o3f the Ti element is preferably replaced with Zr. The resulting high frequency dielectric ceramic composition has a high relative dielectric constant (∈r) and a high Q value in a microwave region, can control the temperature coefficient of resonant frequency (&tgr;f) in the vicinity of zero (ppm/°C.), and has a satisfactory thermal shock resistance.

Abstract: A dielectric ceramic for high frequency having a composition represented by the formula: yCaTiaO1+2a−(1−y)xCa{(MgzZn1−z)⅓Nb⅔}bO1+2b−(1−y)(1−x)Ca(Al½Nb½)cO1+2c wherein (1−y)x≦0.340; 0<x≦0.600; 0.380≦y≦0.570; 0≦z≦1.000; 0.980≦a≦1.050; 0.980≦b≦1.050; and 0.980≦c≦1.050, and comprising a perovskite crystal phase as the main crystal is provided. It has a large specific dielectric constant of from about 40 to 60, a large Q value (at 1 GHz) of about 25,000 or more and a temperature coefficient of resonant frequency which can be controlled within the range of about 0±30 (ppm/° C.). Part of the Nb may be replaced with Ta.