Abstract: A wireless data transmission system includes N (N is an integer equal to or greater than 2) transmission coils each disposed under water such that an opening surface thereof faces vertically upward, and N communication devices each connected in a one-to-one correspondence to a connected transmission coil which is any one of the N transmission coils and each configured to perform data communication via the corresponding connected transmission coil. Each of the communication devices performs multi-hop transmission of data, which is acquired by a data acquiring device movable under the water, based on a topology generated in advance and indicating a connection mode between the N communication devices and magnetic field coupling occurring between the connected transmission coil and other connected transmission coils adjacent thereto.

Abstract: A depth filter with excellent filtration accuracy and pressure resistance performance even for fluids containing high density and high viscosity powder fine particles. A depth filter having a base material layer, a filtration layer, and a skin layer, in that order, wherein: the substrate layer and the skin layer are layers made by a nonwoven fabric being wound and thermally fused; the filtration layer is a laminate in which at least a nonwoven fabric and a net are laminated, being wound twice or more; and the nonwoven fabric contained in the filtration layer contains a mixed-fiber nonwoven fabric containing two or more types of fibers with mutually different average fiber diameters.

Abstract: A coil component comprising a core having a winding core part, and a coil wound around the winding core part and including a plurality of wires. The coil includes a twisted wire portion in which the plurality of wires is twisted together. The twisted wire portion includes a bank region including a first layer wound multiple turns continuously around the winding core part and a second layer wound on the first layer continuously from the first layer. The bank region is sparsely wound with the number of turns of the second layer reduced by two or more as compared to the number of turns of the first layer.

Abstract: A semiconductor device includes a wiring board having a wiring pattern, a semiconductor package, and a heat dissipation member. The semiconductor package includes a heat dissipation substrate, a semiconductor chip formed with a semiconductor element and arranged on the heat dissipation substrate, and an element pad electrically connected to the semiconductor chip. The semiconductor package is mounted on the wiring board, and the element pad is connected to the wiring pattern. The heat dissipation member is disposed opposite to the wiring board with respect to the semiconductor package, and is thermally connected to the insulating heat dissipation substrate. The wiring pattern includes a heat dissipation pattern that is connected to the semiconductor element and allows a current according to an operation of the semiconductor element to flow. A heat dissipation connection member is disposed between the heat dissipation pattern and the insulating heat dissipation substrate to thermally connect therebetween.

Abstract: The present invention aims to provide an ester bond-containing polycarboxylic acid (salt) having a higher biodegradability and a higher alkaline degradation change rate, a method for producing the same, and a detergent composition containing the ester bond-containing polycarboxylic acid (salt). The present invention relates to an ester bond-containing polycarboxylic acid or a salt thereof, containing: an ester group-derived structural unit in a main chain; and a carboxylic acid or a salt thereof in a side chain, the carboxylic acid or the salt thereof being attached to a ? position or a ? position of a carbonyl carbon of the ester group.

Abstract: A method of determining a position of a mark including a first pattern arranged in a first layer of a substrate and a second pattern arranged in a second layer of the substrate, includes determining information concerning the position of the mark as provisional position information based on an image of the mark, acquiring relative position information indicating a relative position between the first pattern and the second pattern, and determining the position of the mark based on the provisional position information and the relative position information.

Abstract: A coil component comprising a core having a winding core part, and a coil wound around the winding core part and including a plurality of wires. The coil includes a twisted wire portion in which the plurality of wires is twisted together. The twisted wire portion includes a bank region including a first layer wound multiple turns continuously around the winding core part and a second layer wound on the first layer continuously from the first layer. The bank region is sparsely wound with the number of turns of the second layer reduced by two or more as compared to the number of turns of the first layer.

Abstract: A winding-type coil component includes a first wire and a second wire having a twisted wire portion where the first wire and the second wire are twisted together. Switching positions of the first wire and the second wire in the twisted wire portion are shifted in a circumferential direction of a winding core portion every turn.

Abstract: A mixing system includes a soil mixing device that crushes and grinds construction generated soil and a feed belt conveyor that is engaged with the soil mixing device and conveys the construction generated soil to the soil mixing device. In the feed belt conveyor, the number of degrees of freedom regarding rotation of a cylindrical member engaged with the soil mixing device differs from the number of degrees of freedom regarding rotation of a spherical bearing mechanism abutting on the ground. This configuration allows a plurality of units to be easily installed in an appropriate positional relation at a construction site or the like.

Abstract: A control device is provided for a human-powered vehicle including a vehicle body, and a sensor mounted on the human-powered vehicle for detecting at least one of acceleration or inclination. The control device includes an electronic controller configured to set a virtual inclination angle change of the sensor during riding of a rider based on at least one of vehicle body information on of the human-powered vehicle or load information on a load acting on the human-powered vehicle. At least one of the vehicle body information and the load information can be input from an external control device to the control device.

Abstract: A rear hub thru-axle is provided for a human powered vehicle. The rear hub thru-axle is basically provided with a first axle portion and a second axle portion. The first axle portion has a first hollow interior passage defining a first interior dimension. The second axle portion has a second hollow interior passage defining a second interior dimension. The first axle portion is connected to the second axle portion in an axial direction with respect to the rear thru-axle. The first interior dimension of the first hollow interior passage is larger than the second interior dimension of the second hollow interior passage.

Abstract: An electronic device is provided to a human-powered vehicle. The electronic device basically includes an electronic controller. The electronic controller is configured to selectively operate in an operational state that includes a first operational state and a second operational state. The second operational state consumes more electric power than the first operational state. The electronic controller is configured to switch the operational state between the first operational state and the second operational state in accordance with a rotational amount of a rotational body included in a transmission path of a human driving force in the human-powered vehicle.

Abstract: Provided is a method for manufacturing a conductive pillar capable of bonding a substrate and a bonding member with high bonding strength via a bonding layer without employing an electroplating method, and a method for manufacturing a bonded structure by employing this method. A method for manufacturing a conductive pillar 1 includes, in sequence, the steps of forming a resist layer 16 on a substrate 11 provided with an electrode pad 13, the resist layer 16 including an opening portion 16a on the electrode pad 13, forming a thin Cu film 17 by sputtering or evaporating Cu on a surface of the substrate 11 provided with the resist layer 16 including the opening portion 16a, filling the opening portion 16a with a fine particle copper paste 12c, and sintering the fine particle copper paste 12c by heating the substrate 11 filled with the fine particle copper paste 12c.

Abstract: An electrically conductive pillar that can bond a base member and a member to be bonded together with high bonding strength with a bonding layer interposed therebetween and a method for manufacturing the same. Specifically, an electrically conductive pillar 1 is composed of a sintered body 12 of metal micro-particles disposed on a base member 11. The average particle size of the metal micro-particles is less than 1 ?m as measured using a small-angle X-ray scattering method. An upper surface 12b of the sintered body 12 has a concave shape recessed on the base member 11 side. The metal micro-particles are preferably made of one or more metals selected from Ag and Cu.

Abstract: An electroplating method that is a conventional method has had a problem that it is difficult to manufacture fine pillars without being affected by an undercut. Furthermore, an electroless plating method has had a problem that it is difficult to manufacture pillars having the same shape without any void. The inventors have performed intensive investigations to solve the above problems and, as a result, have found that fine conductive pillars with a high aspect ratio can be readily manufactured on a substrate having an electrode section in such a manner that after a conductive paste containing metal micro-particles is applied in a reduced pressure state, the conductive paste is exposed to standard pressure. The present invention has a particular effect on the manufacture of a metal pillar that is a terminal for flip-chip mounting.

Abstract: The known electrolytic plating method is disadvantageous in that it is difficult to form thin pillars without being influenced by undercuts. The electroless plating method is disadvantageous in that it is difficult to form pillars in the same shape without voids. As a solution to these, the electrically conductive paste according to the present invention for forming pillars is used to make pillars by filling. This helps prevent undercuts, and it is also intended to provide metal pillars in the same shape with good reproducibility. The inventors found that an electrically conductive paste that is very small fine metal particles and contains a particular percentage of fine metal particles is extraordinarily advantageous in forming pillars.

Abstract: A layered body includes a ceramic substrate formed of a polycrystalline ceramic and having a supporting main surface and a piezoelectric substrate formed of a piezoelectric material and having a bonding main surface that bonds to the supporting main surface through Van der Waals force. The ceramic substrate includes a supporting main surface amorphous layer formed so as to include the supporting main surface. The piezoelectric substrate includes a bonding main surface amorphous layer formed so as to include the bonding main surface. The supporting main surface amorphous layer has a smaller thickness than the bonding main surface amorphous layer.

Abstract: An optical component according to an embodiment of the present invention includes a translucent substrate, one or more intermediate layers stacked on at least one of an incident surface and an exit surface of the substrate, and a surface layer stacked on an outermost layer of the one or more intermediate layers, the surface layer containing diamond-like carbon as a main component. At least one intermediate layer among the one or more intermediate layers contains silicon as a main component, and the intermediate layer containing silicon as a main component has an oxygen content of 10 atomic % or less.

Abstract: A layered body includes a ceramic substrate formed of a polycrystalline ceramic and having a supporting main surface and a piezoelectric substrate formed of a piezoelectric material and having a bonding main surface that bonds to the supporting main surface through Van der Waals force. The ceramic substrate includes a supporting main surface amorphous layer formed so as to include the supporting main surface. The piezoelectric substrate includes a bonding main surface amorphous layer formed so as to include the bonding main surface. The supporting main surface amorphous layer has a smaller thickness than the bonding main surface amorphous layer.

Abstract: An infrared lens unit of the present invention includes a lens barrel having, on the distal end side thereof, an engaging part having a large inner diameter, an infrared lens that is fitted in the engaging part, and a cap that engages with the outside of the distal end part of the lens barrel, thereby fixing the infrared lens in the engaging part. The infrared lens unit includes a waterproof structure that seals between the infrared lens and the cap.