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: A battery voltage monitor circuit for monitoring a voltage of plural secondary batteries includes first and second logic circuit parts that select first and second secondary batteries from the plural secondary batteries according to first and second command signals supplied from an external device, first and second reference voltage generation parts that generate first and second reference voltages, first and second AD conversion parts that digitalize a voltage of both ends of the first and second secondary batteries into first and second digital signals by using the first and second reference voltages, first and second communication parts that transmit the first and second digital signals to the external device.

Abstract: A column base fitting 42 includes a bottom plate 42c and a support base 42f. The bottom plate 42c is formed to be a plate shape having a square shape, both surfaces of upper and lower, and thickness. The support base 42f is inside from the periphery part of an upper surface 42d of the bottom plate 42c and has a height upward. A lower end of column member 4 is jointed on an upper surface 42g of the support base 42f. Three bolt insertion holes 42a, 42b and 42b are formed in each four corner portions of the bottom plate 42c. A center position of three bolt insertion holes 42a, 42b and 42b is located at a position in which a gravity center of a triangle consisting of lines connecting each center of the insertion holes comes to a position corresponding to a corner part 42q of the support base 42q.

Abstract: In a design support program used for designing a column base structure having a column base portion, and a column member joined to a joint metal fitting, the column base portion yields before the column member, a design basis strength F1? of the joint metal fitting is smaller than a design basis strength F2 of the column member, and the design support program calculates an index bending bearing force of the column member by multiplying a bending bearing force of the column member by a value obtained by dividing F1? by F2, compares a bending bearing force of the column base portion with the index bending bearing force, and sets the bending bearing force of the column base portion to a final bending bearing force of the column base structure in the case that the bending bearing force thereof is smaller than the index bending bearing force.

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: In a column structure, a steel column serving as a column member is joined to a base plate serving as a base member. The steel column is configured by a pair of flanges provided at each of two width direction ends of a web. One end side of the base plate is fixed by first anchor members. The other end side of the base plate is fixed by second anchor members, and the second anchor members are formed with higher tensile strength than the first anchor members.

Abstract: A column base structure is provided that is capable of enhancing the energy absorption capability of the column base structure, thereby preventing the building structure from being damaged, broken and collapsed, and also preventing the column base structure and the building structure from being increased in size, weight and cost. The column base structure contains a junction fitting 42 joined to a lower end of a column member 4, the junction fitting 42 being fixed in a peripheral portion thereof with an anchor bolt 10 that protrudes upward from foundation concrete 3, the anchor bolt 10 yielding before the column member 4, a first bending moment Ma that initiates yield of the anchor bolt 10 being larger than a second bending moment Mb that initiates yield of the peripheral portion of the junction fitting 42, and being 1.5 times or less the second bending moment Mb.

Abstract: In a column base structure provided with a column base portion in which a joint metal fitting arranged above a base concrete is fixed to an anchor bolt protruding upward from the base concrete, and a column member which is joined its lower end portion to an upper surface of the joint metal fitting, a design basis strength F1? of the joint metal fitting is smaller than a design basis strength F2 of the column member, a bending bearing force of the column base portion is smaller than an index bending bearing force of the column member which is calculated by multiplying a bending bearing force of the column member by a value obtained by dividing the design basis strength F1? by the design basis strength F2, and the column base portion yields before the column member according to an increase of the load applied to the column base structure.

Abstract: In a column structure, a steel column having a web and flanges integrally provided to both sides in a width direction of the web is welded to a base plate. First anchor bolts and second anchor bolts are anchored in foundation concrete. The base plate is fixed to the first anchor bolts at an opposite side to the web with respect to the flanges, and fixed to the second anchor bolts at a web side with respect to the flanges. The load bearing ability of a column setup can therefore be efficiently exhibited, and a thickness dimension of the base plate can be reduced.

Abstract: In a beam-connection member 9, the bottom surface side is a column-connection surface 14 and one side surface is a beam-mounting surface 16. In other words, the column-connection surface 14 and the beam-mounting surface 16 are formed to be substantially perpendicular. The column-connection surface 14 is the site of connection with a surface of the column. A depression 15 is formed on the column-connection surface 14. The depth of the depression 15 is preferably at least half of the main body thickness of the beam-connection member 9. Further, a notch 11 is formed across the width direction on the column-connection surface 14. The notch 11 is to avoid interference with the diaphragm. Near the notch 11, a rib 17 is provided in the depression 15 as necessary in the width direction. The rib 17 is for preventing deformation of the beam-connection member and for reinforcing the beam-connection member.

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 column base fitting 42 includes a bottom plate 42c having an approximately square plate shape and a support base 42f inside from the peripheral part of an upper surface 42d of the bottom plate 42c. A first bolt insertion holes 42a is formed in each four corner portions of the bottom plate 42c and a second bolt insertion hole 42b is formed at two positions closer to the center part than the first bolt insertion hole 42a, in the length direction of each four sides of the bottom plate 42c. A corner built-up portion 42r is formed at both ends in the length direction of the side surface 42h of the support base 42f, having a shape protruding outward in the perpendicular direction from the side surface 42h and filling the corner portion between the side surface 42h and an upper surface of the bottom plate 42c.

Abstract: The reinforcing member 13 is an approximately L-shaped member. The reinforcing member 13 comprises a first connecting part 15a, which is connected to the connecting surface of the beam 9b of the column 5, and a second connecting part 15b, which is connected to a surface perpendicular to the surface to which the beam 9b is connected. That is, the connecting part 15a and the connecting part 15b are perpendicular to each other. A concave surface part 17 is provided on the inner surface side of the intersection of the connecting parts 15a and 15b. The reinforcing member 13 is, for example, made of steel having excellent weldability. On the connecting parts 15a and 15b, groove parts 19 are formed on the parts corresponding to the welding parts of the column 5.

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: There is provided a piezoelectric material not containing any lead component, having stable piezoelectric characteristics in an operating temperature range, a high mechanical quality factor, and satisfactory piezoelectric characteristics. The piezoelectric material according to the present invention includes a main component containing a perovskite-type metal oxide that can be expressed using the following general formula (1), and subcomponents containing Mn, Li, and Bi. When the metal oxide is 100 parts by weight, the content of Mn on a metal basis is not less than 0.04 parts by weight and is not greater than 0.36 parts by weight, content ? of Li on a metal basis is equal to or less than 0.0012 parts by weight (including 0 parts by weight), and content ? of Bi on a metal basis is not less than 0.042 parts by weight and is not greater than 0.850 parts by weight (Ba1-xCax)a(Ti1-y-zZrySnz)O3??(1) (in the formula (1), 0.09?x?0.30, 0.025?y?0.085, 0?z?0.02, and 0.986?a?1.02).

Abstract: A cutout part is formed at the approximate center of the connecting member. The cutout part in the connecting member is a circular penetrating hole that penetrates a convex part and a main body part. On the side of a lower surface of the connecting member, the convex part is formed around the cutout part. The convex part includes a tapered part and a rib. The tapered part gradually inclines in the direction toward the center from the side of the main body part (the side of the base part of the convex part) to the tip side (the side of the top part thereof). The rib part is formed on the edge part of the cutout part, which is the top part of the tapered part. The rib part is a part that protrudes downward from the top part of the tapered part.

Abstract: A protective monitoring circuit includes a protective circuit to detect at least one of overcharging, overdischarging, and overcurrent of a chargeable secondary battery to control whether to turn on or off a control transistor to protect the secondary battery, and a secondary-battery monitoring circuit, having a reduced size and having a breakdown voltage lower than a battery voltage of the secondary battery, to detect a status of the secondary battery, wherein the protective circuit generates a voltage that is commensurate with an output voltage of the secondary battery and that is within a predetermined tolerance voltage range of the secondary-battery monitoring circuit, and the secondary-battery monitoring circuit generates a detection value responsive to the generated voltage supplied from the protective circuit, the detection value being indicative of the output voltage of the secondary battery.

Abstract: In a column structure, a steel column having flanges integrally provided at both width direction ends of a web is welded to a base plate. The base plate is also fixed to first anchor bolts and to second anchor bolts, with the first anchor bolts and the second anchor bolts disposed at the opposite side of the flanges to the web. The second anchor bolts are also disposed at the web width direction inside with respect to the first anchor bolts. Therefore, load bearing ability of a column seat can be efficiently exhibited, and the thickness dimension of the base plate can be reduced.

Abstract: A hydraulic excavator includes control valves connected to a head-side chamber of a boom cylinder, an operating unit configured to switch the control valves, lock valves each provided between the head-side chamber and each of the control valves, and an operation control unit that controls the operation of the lock valves. The lock valves each have a valve element that is configured to move between a locking position at which the discharge of hydraulic oil from the head-side chamber is restricted and an unlocking position at which the discharge of the hydraulic oil from the head-side chamber is allowed. The operation control unit controls the operation of the lock valves so that the valve elements move from the locking position to the unlocking position at different points in time when the operating unit is operated.