Abstract: An intake system includes an intake passage for leading intake air to an internal combustion engine; an air cleaner connected to the upstream side end portion of the intake passage. A pressure sensor measures pressure of intake air in the intake passage. An air cleaner case includes a case main body mounted to the upstream side end portion of the intake passage. A cover portion closes the case main body. The intake system includes a throttle body constituting part of the intake passage and having a throttle valve. The pressure sensor is mounted to a support portion extending outward from the case main body and is connected to the downstream side of the throttle valve.

Abstract: A vibration wave driving device including a lead-free piezoelectric material that can be driven with high reliability over a wide operating temperature range, an image pickup device including the vibration wave driving device, and an optical apparatus including the vibration wave driving device are provided. The vibration wave driving device generates a vibration wave by applying an AC voltage to a piezoelectric element, and includes the piezoelectric element and a capacitor that satisfy 20[° C.]?T?(Cmax)?T?(Pmax)?75[° C.] and 0.50??(Cc)/?(Cmax)?0.80.

Abstract: A lead-free piezoelectric element that stably operates in a wide operating temperature range contains a lead-free piezoelectric material. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material that includes a perovskite-type metal oxide represented by (Ba1-xCax)a(Ti1-yZry)O3 (1.00?a?1.01, 0.02?x?0.30, 0.020?y?0.095, and y?x) as a main component and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.40 parts by weight or less on a metal basis.

Abstract: A lead-free piezoelectric element that stably operates in a wide operating temperature range contains a lead-free piezoelectric material. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material that includes a perovskite-type metal oxide represented by (Ba1-xCax)a(Ti1-yZry)O3 (1.00?a?1.01, 0.02?x?0.30, 0.020?y?0.095, and y?x) as a main component and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.40 parts by weight or less on a metal basis.

Abstract: A piezoelectric ceramic includes: a metal oxide represented by General Formula (1); and 0.04 parts by weight or more and 0.36 parts by weight or less of Mn and 0.042 parts by weight or more and 0.850 parts by weight or less of Bi on a metal basis relative to 100 parts by weight of the metal oxide, wherein the piezoelectric ceramic includes a plurality of first crystal grains having a perovskite structure, and a plurality of second crystal grains provided at a grain boundary between the first crystal grains and having a crystal structure different from that of the first crystal grain, and the second crystal grain mainly contains at least one metal oxide selected from Ba4Ti12O27 and Ba6Ti17O40. (Ba1-xCax)a(Ti1-yZry)O3??(1) (where 0.09?x?0.30, 0.025?y?0.085, 0.986?a?1.

Abstract: A piezoelectric ceramic compatibly represents both an excellent piezoelectric constant and an excellent mechanical quality factor. The piezoelectric ceramic contains a metal oxide expressed by general formula (1) shown below and Mn by not less than 0.04 weight parts and not more than 0.36 weight parts relative to 100 weight parts of the metal oxide in terms of metal. The piezoelectric ceramic includes a plurality of first crystal grains having a perovskite structure and a plurality of second crystal grains existing at grain boundaries between the first crystal grains. The second crystal grains contain at least a metal oxide expressed by general formula (2) shown below: (Ba1-xCax)a(Ti1-yZry)O3??(1) where 0.09?x?0.30, 0.025?y?0.085 and 0.986?a?1.020; (Ba1-vCav)b(Ti1-wZrw)cOd??(2) where 0?v?1, 0?w?1, 1?b?6, 2?c?19, b+2c?1?d?b+2c and b<c where b, c and d are integers.

Abstract: A vibration wave drive device (25) includes an annular piezoelectric element (20) including a piezoelectric material (1) and multiple electrodes provided sandwiching the piezoelectric material (1), the annular piezoelectric element being configured to vibrate by a traveling wave of a wavelength ?; and a power feeding member (8) including at least electric wire (8a) for supplying electric power to the element (20), the feeding member (8) being provided to a first surface of the element (20). The element (20) includes at least two driving regions (15, 16), and a non-driving region (17) arranged between two of the at least two driving regions and has an average annular length of n?/4, n being an odd number. At least one electrode provided on the first surface is arranged across the region (15, 16) and the region (17), and is electrically connected to the feeding member (8) only in the region (17).

Abstract: A vibration wave driving device including a lead-free piezoelectric material that can be driven with high reliability over a wide operating temperature range, an image pickup device including the vibration wave driving device, and an optical apparatus including the vibration wave driving device are provided. The vibration wave driving device generates a vibration wave by applying an AC voltage to a piezoelectric element, and includes the piezoelectric element and a capacitor that satisfy 20[° C.]?T?(Cmax)?T?(Pmax)?75[° C.] and 0.50??(Cc)/?(Cmax)?0.80.

Abstract: A piezoelectric element according to the present invention includes a piece of piezoelectric material and a plurality of electrodes disposed on both surfaces of the piezoelectric material. The piezoelectric material is including a perovskite-type metal oxide represented by general formula (1) below as a main component, a portion or the entire of the piezoelectric material is held by the plurality of electrodes, and the piezoelectric material held by the electrodes has a first region having remanent polarization. General Formula (1) (Ba1-x-yCaxSny)?(Ti1-zZrz)O3 (where 0.020?x?0.200, 0.020?y?0.200, 0?z?0.050, and 0.986???1.

Abstract: An oscillatory wave drive device has an oscillatory wave driving unit having an electromechanical energy conversion element having drive phases and a detection phase, a diaphragm, and a rotor, in which a traveling wave is generated on the surface of the diaphragm of the electromechanical energy conversion element to drive the rotor, and the driving speed of the rotor is controlled based on a signal of the phase difference detecting unit. In the oscillatory wave drive device, a detection phase voltage step-down unit and a drive phase voltage step-down unit each containing a resistance voltage dividing circuit having at least two resistors are provided and the voltage dividing ratio in the resistance voltage dividing circuit of the detection phase voltage step-down unit is lower than 1/1 and higher than 1/20.

Abstract: A piezoelectric element according to the present invention includes a piece of piezoelectric material and a plurality of electrodes disposed on both surfaces of the piezoelectric material. The piezoelectric material is including a perovskite-type metal oxide represented by general formula (1) below as a main component, a portion or the entire of the piezoelectric material is held by the plurality of electrodes, and the piezoelectric material held by the electrodes has a first region having remanent polarization. (Ba1-x-yCaxSny)?(Ti1-zZrz)O3 (where 0.020?x?0.200, 0.020?y?0.200, 0?z?0.050, and 0.986???1.

Abstract: The present invention provides a lead-free piezoelectric material having a high piezoelectric constant and a high mechanical quality factor in a wide operating temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): (Ba1-xCax)a(Ti1-yZry)O3 (1.00?a?1.01, 0.125?x<0.155, and 0.041?y?0.074) as a main component. The metal oxide contains Mn in a content of 0.12 parts by weight or more and 0.40 parts by weight or less based on 100 parts by weight of the metal oxide on a metal basis.

Abstract: The present invention provides a hollow fiber membrane where the membrane strength and pressure resistance to pressurization from the dialysate side is ensured, the retaining rate of water permeability after the repeated pressure load from outside is high, the resistance to the pressure from outside is excellent and the assembling property into module (low leakage rate at the adhered part) is satisfactory at the same time. The present invention also provides a method for manufacturing the same, and a blood purification module.

Abstract: A bottom inner wall of an air cleaner case is provided with a first and second bulging parts and roughly U-shaped in section which have projected surfaces on the inside of the air cleaner case and recessed surfaces on the outside of the air cleaner case. First and second resonators are formed by a structure wherein first and second compartments continuously surrounded by the first and second bulging parts as well as a pair of side inner walls, the bottom inner wall and a partition wall of the air cleaner case are closed with first and second lids provided with communication holes.

Abstract: A fuel pump mounting structure of a saddle-ride-type vehicle that can enhance the degree of freedom in the shape of a fuel tank with the construction where a fuel pump is arranged in the inside of the saddle-type fuel tank that straddles a main frame. A first opening portion is formed in a tank bottom plate of a fuel tank, and a mounting arm which closes the first opening portion by one end thereof and supports the fuel pump by the other end thereof is arranged in the inside of the fuel tank, the mounting arm extends along a vehicle widthwise direction toward a gap SA formed between a straddling bottom portion of the fuel tank that straddles a main frame and a tank side wall of the fuel tank, and supports the fuel pump in the inside of the gap SA.

Abstract: A piezoelectric material includes, as a main component, a perovskite-type metal oxide represented by a general formula (Ba1-xCax)a(Ti1-y-zSnyZrz)O3 where 1.00?a?1.01, 0.125?x?0.300, 0?y?0.020, and 0.041?z?0.074, the perovskite-type metal oxide containing copper (Cu) and manganese (Mn). A Cu content relative to 100 parts by weight of the metal oxide is 0.02 parts by weight or more and 0.60 parts by weight or less on a metal basis, and a Mn content relative to 100 parts by weight of the metal oxide is 0.12 parts by weight or more and 0.40 parts by weight or less on a metal basis.

Abstract: Provided is a lead-free piezoelectric material having satisfactory and stable piezoelectric constant and mechanical quality factor in a wide practical use temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): (Ba1-xCax)a(Ti1-yZry)O3 (wherein, 1.00?a?1.01, 0.125?x?0.300, and 0.041?y?0.074), Mn, and Mg. The content of Mn is 0.12 parts by weight or more and 0.40 parts by weight or less based on 100 parts by weight of the perovskite-type metal oxide on a metal basis. The content of Mg is 0.10 parts by weight or less (excluding 0 part by weight) based on 100 parts by weight of the perovskite-type metal oxide on a metal basis.

Abstract: A lead-free piezoelectric element that stably operates in a wide operating temperature range contains a lead-free piezoelectric material. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material that includes a perovskite-type metal oxide represented by (Ba1-xCax)a(Ti1-yZry)O3 (1.00?a?1.01, 0.02?x?0.30, 0.020?y?0.095, and y?x) as a main component and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.40 parts by weight or less on a metal basis.

Abstract: A bottom inner wall of an air cleaner case is provided with a first and second bulging parts and roughly U-shaped in section which have projected surfaces on the inside of the air cleaner case and recessed surfaces on the outside of the air cleaner case. First and second resonators are formed by a structure wherein first and second compartments continuously surrounded by the first and second bulging parts as well as a pair of side inner walls, the bottom inner wall and a partition wall of the air cleaner case are closed with first and second lids provided with communication holes.

Abstract: An intake system includes an intake passage for leading intake air to an internal combustion engine; an air cleaner connected to the upstream side end portion of the intake passage. A pressure sensor measures pressure of intake air in the intake passage. An air cleaner case includes a case main body mounted to the upstream side end portion of the intake passage. A cover portion closes the case main body. The intake system includes a throttle body constituting part of the intake passage and having a throttle valve. The pressure sensor is mounted to a support portion extending outward from the case main body and is connected to the downstream side of the throttle valve.