Abstract: A liquid crystal composition as a material used for elements for controlling electromagnetic wave signals in a frequency range of 1 GHz to 10 THz, and an element containing this composition are provided. In the liquid crystal composition, a characteristic balance is excellent, and at least one of characteristics of a wide temperature range of a nematic phase, a large refractive index anisotropy in a frequency region used for control, and a small dielectric loss tangent (tan ?) is satisfied. A liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) is provided: wherein R1 is an alkyl having 1 to 12 carbon atoms; ring A1 is 1,4-phenylene; L11, L13, L14, L16, Y11, and Y12 are each hydrogen; L12 is fluorine; and L15 is methyl.

Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a and c are respectively 0 or 1, b is 1, and a sum of a, b, and c is 2.

Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a, b, and c are respectively 0, 1, and 0.

Abstract: A liquid crystal composition as a material used for elements for controlling electromagnetic wave signals in a frequency range of 1 GHz to 10 THz, and an element containing this composition are provided. In the liquid crystal composition, a characteristic balance is excellent, and at least one of characteristics of a wide temperature range of a nematic phase, a large refractive index anisotropy in a frequency region used for control, and a small dielectric loss tangent (tan ?) is satisfied. A liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) is provided. For example, R1 is an alkyl having 1 to 12 carbon atoms; ring A1 is 1,4-phenylene; L11, L13, L14, L16, Y11, and Y12 are each hydrogen; L12 is fluorine; and L15 is methyl.

Abstract: In a fuel cell vehicle, an occupant room is disposed at a front part of a vehicle body frame, and a rear side of the occupant room of the vehicle body frame is a load mount part. A hydrogen handling device is supported at least by the load mount part. The fuel cell vehicle includes a cover room that surrounds at least an upper part and a side part of the hydrogen handling device that is supported by the load mount part. A load room is disposed on the load mount part of the vehicle body frame. A discharge duct that discharges a hydrogen gas in the cover room upward from between the load room and the occupant room is connected to the cover room.

Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a and c are respectively 0 or 1, b is 1, and a sum of a, b, and c is 2.

Abstract: A material used in an element for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz. A liquid crystal composition containing at least one compound selected from a group of compounds represented by Formula (1), at least one compound selected from a group of compounds represented by Formula (2) and at least one compound selected from a group of compounds represented by Formula (3). In Formulae (1) to (3), R1, R21, R22, R31, and R32 may be alkyls having 1 to 12 carbon atoms; a ring A1 may be 1,4-phenylene; Z11, Z13, Z21, Z23, Z31, and Z33 may be single bonds; Z12, Z22, and Z32 may be —C?C— or —C?C—C?C—; L13 to L16, L21 to L23, and L31 to L36 may be hydrogen or fluorine; Y11 and Y12 may be hydrogen or fluorine; and n1 may be 0.

Abstract: According to an embodiment, a power supply control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a first controller configured to control the plurality of fuel cell systems in an integrated way, and a second controller configured to control the fuel cell system to which the second controller belongs among the plurality of fuel cell systems. The second controller acquires a state of the fuel cell system to which the second controller belongs and notifies the first controller of the state of the fuel cell system. The first controller controls power generation of each of the plurality of fuel cell systems on the basis of the state of the fuel cell system to which the second controller belongs acquired by the second controller.

Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a, b, and c are respectively 0, 1, and 0.

Abstract: A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.

Abstract: As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan ? in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.

Abstract: A fuel cell system includes a plurality of electricity generation systems and a connection flow path through which fuel flows between the plurality of electricity generation systems. Each electricity generation system includes a fuel tank, a fuel cell stack, a fuel flow path, a first pressure sensor, a shutoff valve, a control device, and a branch portion. The first pressure sensor is arranged in the fuel flow path and detects a fuel pressure on the fuel tank side. The shutoff valve is arranged on a downstream side of the first pressure sensor in the fuel flow path, and is switched between flow and shutoff of the fuel by opening and closing. The branch portion branches from the fuel flow path on a downstream side of the shutoff valve in the fuel flow path. The connection flow path connects the mutual branch portions of the plurality of electricity generation systems.

Abstract: An opening is formed in an accommodating case of a fuel cell stack. Flat cables are led out of the accommodating case through the opening. The flat cables pass through a grommet covering the opening. The grommet is positioned by a seal plate (positioning member) attached to the accommodating case.

Abstract: A material used in an element for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz. A liquid crystal composition containing at least one compound selected from a group of compounds represented by Formula (1), at least one compound selected from a group of compounds represented by Formula (2) and at least one compound selected from a group of compounds represented by Formula (3). For example, R1, R21, R22, R31, and R32 are alkyls having 1 to 12 carbon atoms; a ring A1 is 1,4-phenylene; Z11, Z13, Z21, Z23, Z31, and Z33 are single bonds; Z12, Z22, and Z32 are —C?C— or —C?C—C?C—; L13 to L16, L21 to L23, and L31 to L36 are hydrogen or fluorine; Y11 and Y12 are hydrogen or fluorine; and n1 is 0.

Abstract: As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan ? in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.

Abstract: A fuel cell system includes a plurality of electricity generation systems and a connection flow path through which fuel flows between the plurality of electricity generation systems. Each electricity generation system includes a fuel tank, a fuel cell stack, a fuel flow path, a first pressure sensor, a shutoff valve, a control device, and a branch portion. The first pressure sensor is arranged in the fuel flow path and detects a fuel pressure on the fuel tank side. The shutoff valve is arranged on a downstream side of the first pressure sensor in the fuel flow path, and is switched between flow and shutoff of the fuel by opening and closing. The branch portion branches from the fuel flow path on a downstream side of the shutoff valve in the fuel flow path. The connection flow path connects the mutual branch portions of the plurality of electricity generation systems.

Abstract: According to an embodiment, a power supply control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a first controller configured to control the plurality of fuel cell systems in an integrated way, and a second controller configured to control the fuel cell system to which the second controller belongs among the plurality of fuel cell systems. The second controller acquires a state of the fuel cell system to which the second controller belongs and notifies the first controller of the state of the fuel cell system. The first controller controls power generation of each of the plurality of fuel cell systems on the basis of the state of the fuel cell system to which the second controller belongs acquired by the second controller.

Abstract: A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.

Abstract: In a fuel cell vehicle, an occupant room is disposed at a front part of a vehicle body frame, and a rear side of the occupant room of the vehicle body frame is a load mount part. A hydrogen handling device is supported at least by the load mount part. The fuel cell vehicle includes a cover room that surrounds at least an upper part and a side part of the hydrogen handling device that is supported by the load mount part. A load room is disposed on the load mount part of the vehicle body frame. A discharge duct that discharges a hydrogen gas in the cover room upward from between the load room and the occupant room is connected to the cover room.

Abstract: An opening is formed in an accommodating case of a fuel cell stack. Flat cables are led out of the accommodating case through the opening. The flat cables pass through a grommet covering the opening. The grommet is positioned by a seal plate (positioning member) attached to the accommodating case.