Abstract: A bicycle rear derailleur is configured to be mounted to a bracket device formed separately from the bicycle rear derailleur. The bicycle rear derailleur includes a base element, a movable element, a linkage mechanism, and a chain guide. The base element includes a first base end and a second base end. The movable element is movably arranged relative to the base element. The linkage mechanism connects the movable element to the base element. The chain guide arrangement is rotatably connected to the movable element about a rotational axis. The second base end is coupled to the linkage mechanism. The first base end includes a first base arm and a second base arm. The first base end and the second base end are configured such that the derailleur attachment end is disposed between the first base arm and the second base arm in the mounting state.

Abstract: Provided are a hot dip galvanized steel sheet comprising a base steel sheet wherein the base steel sheet has a predetermined chemical composition, and contains ferrite: 50% or less, retained austenite: 30% or less, tempered martensite: 5% or more, fresh martensite: 10% or less, and pearlite and cementite in total: 5% or less, remaining structures consist of bainite, and a number ratio of tempered martensite with a Mn concentration profile satisfying [Mn]b/[Mn]a>1.2 and [Mn]a/[Mn]<2.0 ([Mn] is the Mn content in the base steel sheet, [Mn]a is the average Mn concentration in the tempered martensite, and [Mn]b is the Mn concentration at the interfaces of different phases of the tempered martensite and ferrite phase and bainite phase) is 0.2 or more with respect to the total number of tempered martensite, and a method for producing the same.

Abstract: A method for manufacturing a discharge product includes the steps of: preparing the double pressurized container including an outer container; an inner container stored inside the outer container and having flexibility; and a plug for sealing both of the outer container and the inner container; charging a concentrate inside the inner container; contracting the inner container before or after charging the concentrate; tightly mounting the plug to a mouth of the inner container; charging the pressurizing agent between the outer container and the inner container through a space between a mouth of the outer container and the mouth of the inner container; and tightly closing the space between the mouth of the outer container and the mouth of the inner container by the plug.

Abstract: A radio-frequency module includes a first base made of a first semiconductor material; a second base that is made of a second semiconductor material having a thermal conductivity lower than that of the first semiconductor material and which includes a power amplifier circuit; a third base including a transmission filter circuit; and a module substrate having a main surface on which the first base, the second base, and the third base are arranged. The first base is joined to the main surface via an electrode. The second base is arranged between the module substrate and the first base in a sectional view and is joined to the main surface via an electrode. At least part of the first base is overlapped with at least part of the second base and at least part of the third base in a plan view.

Abstract: A furopyrazine derivative that is a novel organic compound is provided. The organic compound has a furopyrazine skeleton and is represented by General Formula (G1). In General Formula (G1), Q represents oxygen or sulfur, Ar1 represents a substituted or unsubstituted condensed aromatic ring, R1 and R2 independently represent hydrogen or a group having 1 to 100 total carbon atoms, and at least one of R1 and R2 has a hole-transport skeleton.

Abstract: A battery includes an exterior can, an electrode group housed together with an alkaline electrolyte in the exterior can, and a sealing member that seals the exterior can. The electrode group is formed by winding a positive electrode and a negative electrode stacked together with a separator interposed therebetween into a spiral shape and has a columnar overall shape. A protruding negative electrode edge portion that is a partially protruding portion of the negative electrode is located at a lower end surface portion of the electrode group, and the protruding negative electrode edge portion is in direct contact with the inner surface of a bottom wall of the exterior can.

Abstract: A method of heating up a furnace bottom and a burner lance used in the method are proposed. The method of heating up the furnace bottom includes a step of opening, in the tap hole, a burner lance insertion hole having a diameter larger than a diameter of the burner lance so as to penetrate into the furnace, a step of installing the burner lance in the opened burner lance insertion hole, a step of filling a gap between the installed burner lance and a furnace exterior side of the tap hole with a refractory, and a step of blowing in gas for heating into the furnace from the burner lance to heat up the furnace bottom.

Abstract: As a novel substance having a novel skeleton, an organometallic complex with high emission efficiency which achieves improved color purity by a reduction of half width of an emission spectrum is provided. One embodiment of the present invention is an organometallic complex in which a ?-diketone and a six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom are ligands. In General Formula (G1), X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

Abstract: A masterbatch, which includes a polyester resin (A) containing a structural unit derived from terephthalic acid (A-1) and a structural unit derived from an aliphatic diol (A-2); and a polyester resin (B) containing a structural unit derived from 2,5-furandicarboxylic acid (B-1) and a structural unit derived from 1,2-ethanediol (B-2). A proportion of the polyester resin (B) relative to a total mass of the polyester resin (A) and the polyester resin (B) is 45 mass % to 90 wt %. An intrinsic viscosity of the masterbatch is 0.50 dl/g to 1.20 dl/g.

Abstract: An optical system that achieves size reduction in a zoom lens with high magnification and has favorable optical performance, an optical apparatus, and a method for manufacturing the optical system are provided. An optical system OL included in an optical apparatus such as a camera 1 includes, sequentially from an object side, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a middle group GM constituted by one or two lens groups and having positive refractive power, a focusing group GF that is a lens group having negative refractive power and moves in an optical axis direction at focusing, and a rear group GR constituted by at least one lens group, distance between lens groups adjacent to each other changes at magnification change from a wide-angle end state to a telephoto end state, and the optical system OL satisfies a predetermined condition.

Abstract: The present invention maintains compatibility with a power tool having no wireless connection function, and prevents malfunctions due to linked operation. A battery pack that supplies a driving power source to a power tool, said battery pack comprising: a wireless communication unit for communicating wirelessly with an external device; and a control unit that performs a first determination process to determine the state of a wireless communication connection with the external device, wherein when the control unit has determined in the first determination process that wireless communication has been established, the control unit transmits a linking command to the external device, and during a state in which the wireless communication has been established, the control unit can perform a communication connection cancellation process to cancel the wireless communication.

Abstract: According to a mobility service provision system, an in-vehicle system, a management server, an access control method, a non-transitory computer-readable storage medium storing a program, each function block is mounted in one of a plurality of electronic control units and configured to execute a predetermined process, an authorization policy that defines an access privilege between the plurality of function blocks is stored, and a static viewpoint policy is generated by integrating a plurality of viewpoint-specific policies based on the plurality of viewpoint-specific policies that define the access privilege for each of a plurality of viewpoints focusing on a static attribute of the plurality of function blocks.

Abstract: A novel compound and a light-emitting element with high emission efficiency and a long lifetime are provided. The novel compound includes a benzofuropyrazine skeleton or a benzothienopyrazine skeleton, and each of a benzene ring and a pyrazine ring in the benzofuropyrazine skeleton or the benzothienopyrazine skeleton independently includes a substituent with a total number of carbon atoms of 6 to 100 inclusive. The light-emitting element includes the compound.

Abstract: Provided is a solid secondary battery capable of more suppressing a short circuit due to generation or growth of dendrites than in the prior art. The anode material comprises amorphous carbon and a first element that forms an alloy with lithium by an electrochemical reaction, wherein the amorphous carbon is carbon black, primary particles of the carbon black are porous, and a value of an average primary particle diameter (cm)×a nitrogen adsorption specific surface area (cm2/g) is greater than or equal to 5 and less than or equal to 35.

Abstract: A video encoding method includes: storing quantized data of frames which have undergone a quantization process by serially storing the quantized data of the frames on a per quantized data of one frame basis; determining a quantization parameter to be used when performing a quantization process of a next frame immediately following the frames, based on quantized data of a predetermined number of frames among the quantized data of the frames; performing the quantization process of the next frame based on the quantization parameter to generate quantized data of the next frame; and executing encoding processes for entropy encoding quantized data of frames including the next frame in parallel between the frames including the next frame.

Abstract: An electrical apparatus includes a battery pack, an electrical apparatus main body and a control unit. The battery pack has a plurality of cell units of which connection states are able to be switched and a plurality of battery side connection terminals. The electrical apparatus main body has a battery pack mounting portion to which the battery pack is mounted, a plurality of device side connection terminals to which the plurality of battery side connection terminals are connectable, and a load device to which power is supplied from the battery pack. The control unit is configured to stop or limit power supply from the battery pack to the load device when a voltage imbalance is generated between the plurality of cell units or a contact failure is generated between the plurality of battery side connection terminals and the plurality of device side terminals.

Abstract: A battery pack is provided with: a battery cell; a control part connected to the battery cell; and a wireless communication part connected to the control part and configured to communicate wirelessly with an external device by means of the control part. The wireless communication part wirelessly connects to an electric device having a motor or to an information terminal as the external device for connection. During the wireless connection, priority connection control is performed to connect to the electric device in a wirelessly connectable state.

Abstract: A battery pack having a first cell unit and a second cell unit in which multiple battery cells are connected in series is provided. When the battery pack is not connected to an electric apparatus main body, the first cell unit and the second cell unit are in a non-connection state in which the first cell unit and the second cell unit are not electrically connected to each other. The battery pack includes: a microcomputer, connected to one of the first cell unit and the second cell unit; a residual quantity display portion, connected to the microcomputer and displaying a battery residual quantity of the battery pack; and a switch, being operated by a worker. When the switch is operated while in the non-connection state, the microcomputer is configured to perform a light-on control to display the battery residual quantity by the residual quantity display portion.

Abstract: Provided is a battery pack and an electric device. The battery pack has a first circuit part connecting a positive electrode of an upper side cell unit and a power supply circuit, and a second circuit part connecting a negative electrode of a lower side cell unit and the circuit. In series connection state, a closed loop is formed by a positive electrode of the lower side cell unit, a lower side plus terminal, a shorting bar of a 36V device body, an upper side minus terminal, a negative electrode of the upper side cell unit, the positive electrode of the upper side cell unit, a diode, the circuit, and the negative electrode of the lower side cell unit. The circuit generates a power supply voltage using the series output voltage (36V) of the upper side and the lower side cell unit, and supplies the voltage to a control unit.

Abstract: A battery pack and an electric apparatus are provided. The battery pack is configured to be connectable to an electric apparatus main body of the electric apparatus. The battery pack includes: a first cell unit, including a first plurality of battery cells connected to each other, a first positive terminal, and a first negative terminal; a second cell unit, including a second plurality of battery cells connected to each other, a second positive terminal, and a second negative terminal; a microcomputer; and a casing, accommodating the first cell unit, the second cell unit, and the microcomputer. The first cell unit and the second cell unit are configured to be switched a connection state each other. The microcomputer is configured to be electrically connected to a positive terminal and a negative terminal of one of the first cell unit and the second cell unit and to be provided a power from the one of the first cell unit and the second cell unit.