Abstract: In order to produce a larger output and smaller friction acting on a movable substrate of an electrostatic-type electromechanical transducer using electrostatic interaction between charged portions and opposing electrodes to transduce between electric power and motive power, the electrostatic-type electromechanical transducer includes: a fixed substrate; a movable substrate being movable while maintaining a predetermined distance between the fixed substrate and the movable substrate; charged portions disposed on a first surface of the movable substrate at intervals in a direction of movement of the movable substrate, the first surface facing the fixed substrate; opposing electrodes disposed on the fixed substrate in the direction of movement, the opposing electrodes facing the movable substrate; and a ground electrode facing a second surface of the movable substrate, the second surface being opposite to the first surface.

Abstract: An aluminum alloy casting excellent in high temperature strength and thermal conductivity, a method of producing the same, and an aluminum alloy piston for internal combustion engine using this casting. An aluminum alloy casting having a chemical composition comprising Si: 12.0 to 13.5 mass % Cu: 4.5 to 5.5 mass % Mg: 0.6 to 1.0 mass % Ni: 0.7 to 1.3 mass % Fe: 1.15 to 1.25 mass % Ti: 0.10 to 0.2 mass % P: 0.004 to 0.02 mass % and a balance of Al and unavoidable impurities, wherein in an observed field of view of 0.2 mm2, the major axis length of the Al—Fe—Si based crystallites is 100 ?m or less by average length of 10 crystallites from the largest down. The method for producing the casting comprising casting a melt of aluminum alloy having the above chemical composition at cooling rate of 100° C./sec or more, then performing aging treatment.

Abstract: An aluminum alloy which is excellent in high temperature strength and heat conductivity by adjusting the composition to one keeping down the drop in high temperature strength and making the Mn content as small as possible to reduce the formation of a solid solution in the aluminum, which aluminum alloy having a composition of ingredients which contains Si: 12 to 16 mass %, N: 0.1 to 2.5 mass %, Cu: 3 to 5 mass %, Mg: 0.3 to 1.2 mass %, Fe: 0.3 to 1.5 mass %, and P: 0.004 to 0.02 mass % and furthermore 0 to 0.1 mass % of Mn and further contains, as necessary, at least one of V: 0.01 to 0.1 mass %, Zr: 0.01 to 0.6 mass %, Cr: 0.01 to 0.2 mass %, and Ti: 0.01 to 0.2 mass %. Also described is a method for producing the aluminum alloy melt.

Abstract: A piezoelectric device has a piezoelectric vibration element mounted in a package wherein the piezoelectric vibration element comprises two stick-like vibration legs; a central leg provided between the two vibration legs; a coupling portion that couples one end of each of the two vibration legs and one end of the central leg; and a protrusion portion that is coupled to another end of the central leg, has a predetermined angle, neither 0 nor 180 degrees, to the length direction of the central leg, and extends into a direction not interfering with the driving legs. In making the piezoelectric device smaller and thinner, this configuration avoids interference between a support point on the central leg, provided for supporting the vibration element, and conductive electrodes, improves insulation between the conductive electrodes, and reduces the generation of short-circuits between the conductive electrodes.

Abstract: An aluminum alloy which is excellent in high temperature strength and heat conductivity by adjusting the composition to one keeping down the drop in high temperature strength and making the Mn content as small as possible to reduce the formation of a solid solution in the aluminum, which aluminum alloy having a composition of ingredients which contains Si: 12 to 16 mass %, N: 0.1 to 2.5 mass %, Cu: 3 to 5 mass %, Mg: 0.3 to 1.2 mass %, Fe: 0.3 to 1.5 mass %, and P: 0.004 to 0.02 mass % and furthermore 0 to 0.1 mass % of Mn and further contains, as necessary, at least one of V: 0.01 to 0.1 mass %, Zr: 0.01 to 0.6 mass %, Cr: 0.01 to 0.2 mass %, and Ti: 0.01 to 0.2 mass %. Also described is a method for producing the aluminum alloy melt.

Abstract: Grooves (2a, 3a) are formed in the tines (2, 3) of an oscillator, side surface electrodes (2e, 3e) are formed on the side surfaces of the tines, and groove electrodes (2d, 3d) are formed in the grooves, respectively. The width of the tines (2, 3) is fixed through the whole length of the tines, while, in a part close to the lower end of the tine, the width of the grooves (2a, 3a) is gradually reduced toward the lower end, whereby a trapezoid region (D) is formed between the side surface of the tine and the groove in this part, and a part of the region (D) is used as an arrangement region of an electrode (5c) which connects the groove electrode and the side surface electrode.

Abstract: After an external shape of a photoresist layer is patterned with use of a Cr film as an underlayer, i.e., a metal film to serve as an anticorrosive film that resists crystal etching, and an Au film as a surface layer, the Au film is etched. After groove portions are then patterned, the Cr film is etched. Since no degenerated-surface layer cannot be formed on the photoresist layer with an etchant for the Au film, the groove portions can be patterned without any degenerated-surface layer according to this method, so that high-accuracy groove portions can be formed.

Abstract: A piezoelectric device has a piezoelectric vibration element mounted in a package wherein the piezoelectric vibration element comprises two stick-like vibration legs; a central leg provided between the two vibration legs; a coupling portion that couples one end of each of the two vibration legs and one end of the central leg; and a protrusion portion that is coupled to another end of the central leg, has a predetermined angle, neither 0 nor 180 degrees, to the length direction of the central leg, and extends into a direction not interfering with the driving legs. In making the piezoelectric device smaller and thinner, this configuration avoids interference between a support point on the central leg, provided for supporting the vibration element, and conductive electrodes, improves insulation between the conductive electrodes, and reduces the generation of short-circuits between the conductive electrodes.

Abstract: At the frequency of natural vibration with which the driving tines and detection tine of a piezoelectric vibrator resonate, the vibration directions of natural vibrations and the frequency difference between the resonance frequencies are set to reduce the leakage of vibration from the driving tines to the detection tine for suppressing the leakage vibration of the piezoelectric vibrator. In the piezoelectric vibrator, the vibration direction of the driving tines is made orthogonal to the vibration direction of the detection tine, or the frequency difference between the resonance frequency of the driving tines in the in-plane direction and the resonance frequency of the driving tines in the out-of-plane direction is increased sufficiently to suppress the growth of the leakage vibration. This configuration makes the piezoelectric vibrator compact and reduces leakage vibrations.

Abstract: A vibration gyro having a high accuracy, no vibration leak, and high S/N. The width of a detection leg of a resonator used in the vibration gyro is less than ? of the width of drive legs. The length of the detection leg is larger than the length of the drive legs. As a result, the distance between the detection electrodes is decreased by comparison with the conventional vibration gyro and, therefore, the detection signal is increased and S/N is raised. Furthermore, increasing the leg length brings the natural vibration frequency of out-of-plane vibration of the drive legs close to the natural vibration frequency of the detection leg, providing good coupling and reducing vibration leak to the support section. As a result, Q is increased and S/N is accordingly further increased.

Abstract: An inclination of an inclined surface formed by working a ridge of a resonator is set to be within a predetermined angular range, whereby a leakage of vibration in the out-of-plane direction is reduced, the leakage of vibration being generated according to the detuning degree adjustment. In addition, a single laser beam is irradiated onto the ridge at an incident angle within a predetermined angular range, whereby a simple working on the inclined surface is established for the leakage vibration adjustment. A degree of the leakage vibration of the resonator is determined based on a relationship with the drift amount that is a ratio of the angular velocity change, and the inclination of the inclined surface is set to be within a predetermined angular range, thereby suppressing the drift amount.

Abstract: Grooves (2a, 3a) are formed in the tines (2, 3) of an oscillator, side surface electrodes (2e, 3e) are formed on the side surfaces of the tines, and groove electrodes (2d, 3d) are formed in the grooves, respectively. The width of the tines (2, 3) is fixed through the whole length of the tines, while, in a part close to the lower end of the tine, the width of the grooves (2a, 3a) is gradually reduced toward the lower end, whereby a trapezoid region (D) is formed between the side surface of the tine and the groove in this part, and a part of the region (D) is used as an arrangement region of an electrode (5c) which connects the groove electrode and the side surface electrode.

Abstract: After an external shape of a photoresist layer is patterned with use of a Cr film as an underlayer, i.e., a metal film to serve as an anticorrosive film that resists crystal etching, and an Au film as a surface layer, the Au film is etched. After groove portions are then patterned, the Cr film is etched. Since no degenerated-surface layer cannot be formed on the photoresist layer with an etchant for the Au film, the groove portions can be patterned without any degenerated-surface layer according to this method, so that high-accuracy groove portions can be formed.

Abstract: An inclination of an inclined surface formed by working a ridge of a resonator is set to be within a predetermined angular range, whereby a leakage of vibration in the out-of-plane direction is reduced, the leakage of vibration being generated according to the detuning degree adjustment. In addition, a single laser beam is irradiated onto the ridge at an incident angle within a predetermined angular range, whereby a simple working on the inclined surface is established for the leakage vibration adjustment. A degree of the leakage vibration of the resonator is determined based on a relationship with the drift amount that is a ratio of the angular velocity change, and the inclination of the inclined surface is set to be within a predetermined angular range, thereby suppressing the drift amount.

Abstract: A vibration gyro having a high accuracy, no vibration leak, and high S/N. The width of a detection leg of a resonator used in the vibration gyro is less than ? of the width of drive legs. The length of the detection leg is larger than the length of the drive legs. As a result, the distance between the detection electrodes is decreased by comparison with the conventional vibration gyro and, therefore, the detection signal is increased and S/N is raised. Furthermore, increasing the leg length brings the natural vibration frequency of out-of-plane vibration of the drive legs close to the natural vibration frequency of the detection leg, providing good coupling and reducing vibration leak to the support section. As a result, Q is increased and S/N is accordingly further increased.

Abstract: This invention relates to the compounds represented by a general formula [I]: [in which A1 and A2 represent optionally fluorine-substituted methine or the like; B represents halogen, cyano, lower alkyl or the like; D represents optionally substituted heterocyclic group or the like; and G represents C3-C20 aliphatic group such as alicyclic group]. These compounds inhibit nociceptin activities due to their high affinity to nociceptin receptor, and are useful as analgesic, antiobestic, corebral function improver, drugs for treatment of alzheimer's disease and dementia, remedies for schizophrenia and neurodegenerative diseases, antidepressant, remedies for diabetes insipidus, polyuria, hypotension and so on.

Abstract: This invention relates to the compounds represented by a general formula [I]: 1

Abstract: A vibration gyro has a vibrator composed of three tines (first, second, and third tines) which are aligned in a single line at prescribed intervals in one direction on a base and extend in a direction perpendicular to an aligning direction. A central second tine and an adjacent first tine on a left are driven by oscillator. Further, Coriolis force generated on the second tine and the third tine on a right is detected by a detector. In this vibration gyro, the dimensions of the parts are determined so as to cause the third tine to substantially stand still when the first and second tines are driven by the oscillator.

Abstract: A vibration gyro has a vibrator composed of three tines (first, second, and third tines) which are aligned in a single line at prescribed intervals in one direction on a base and extend in a direction perpendicular to an aligning direction. A central second tine and an adjacent first tine on a left are driven by oscillator. Further, Coriolis force generated on the second tine and the third tine on a right is detected by a detector. In this vibration gyro, the dimensions of the parts are determined so as to cause the third tine to substantially stand still when the first and second tines are driven by the oscillator.

Abstract: A package base for mounting an electronic element, an electronic device using the package base, particularly a crystal resonator. The package base comprises an insulative substrate, and an internal electrode formed at a predetermined position on the substrate, the internal electrode being bonded to the electronic element. A junction member comprising a junction layer composed of a conductive junction alloy having a melting point higher than the mounting temperature and an anti-oxidation conductive layer covering the junction layer is further provided on the internal electrode.