Abstract: The present disclosure provides a Schottky barrier diode. The Schottky barrier diode includes: a semiconductor substrate of a first conductivity type; a semiconductor layer of the first conductivity type and having a region of the first conductivity type and an impurity region of the first conductivity type; a first electrode layer; a second electrode layer; a first external terminal electrically connected to the first electrode layer; and a second external terminal electrically connected to the second electrode layer. The first electrode layer includes a first base portion, a first extending portion and a second extending portion. The second electrode layer includes a second base portion and a third extending portion located between the first extending portion and the second extending portion in a second direction.

Abstract: Provided is a multilayer vessel excellent in gas barrier performance and transparency and its application. The multilayer vessel contains a layer (X) that contains at least one type of polyolefin resin as the major ingredient; and a layer (Y) that contains a polyamide resin (A) as the major ingredient, the polyamide resin (A) being composed of a structural unit derived from diamine, and a structural unit derived from dicarboxylic acid, 70 mol % or more of the structural unit derived from diamine being derived from metaxylylenediamine, meanwhile 30 to 60 mol % of the structural unit derived from dicarboxylic acid being derived from straight chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms, and 70 to 40 mol % being derived from isophthalic acid.

Abstract: A communication system (1000) includes communication devices (10, 20) to share common time after correction of synchronization error including a communication delay with each other via a network (400). The communication device (10) includes a set time acquirer to acquire set time set by a user, a setter to set the set time as first system time, which is system time of the communication device (10), and a time difference data transmitter to transmit time difference data, which indicates a time difference between the common time and the set time, to the communication device (20). The communication device (20) includes a time difference data receiver to receive the time difference data, and a setter to set the sum of the common time and the time difference indicated by the time difference data as second system time, which is system time of the communication device (20).

Abstract: A communication system (1000) includes communication devices (10, 20) to share common time after correction of synchronization error including a communication delay with each other via a network (400). The communication device (10) includes a set time acquirer to acquire set time set by a user, a setter to set the set time as first system time, which is system time of the communication device (10), and a time difference data transmitter to transmit time difference data, which indicates a time difference between the common time and the set time, to the communication device (20). The communication device (20) includes a time difference data receiver to receive the time difference data, and a setter to set the sum of the common time and the time difference indicated by the time difference data as second system time, which is system time of the communication device (20).

Abstract: A first PHY (121) transmits and receives signals, at a physical layer, to and from a second PHY (142) in a communication device (101) through a communication cable (601). The first PHY (121) is set as a clock master to transmit, to the second PHY (142), a clock signal defining timing for transmitting and receiving signals. A device controller (151), in response to detection of a set event, completes initialization of the first PHY (121) set as the clock master after completion of initialization of the second PHY (142) set as a clock slave.

Abstract: A master-slave communication system (1) includes communication devices (100A to 100D) each operable as a master or a slave. Each of at least two (100A to 100C) of the communication devices that operates as slaves includes a down-state detection period storage (120) that stores a down-state detection period set shorter for a slave with a higher priority in selecting a new master among the slaves. A master presence determiner (140) determines whether a master is present based on whether the communication device receives, after receiving a signal from a master and before the down-state detection period elapses, a new signal from a communication device operating as a master. An operation switch (160) switches an operation of the communication device to an operation as a master when the master presence determiner (140) determines that a master is absent.

Abstract: A first PHY (121) transmits and receives signals, at a physical layer, to and from a second PHY (142) in a communication device (101) through a communication cable (601). The first PHY (121) is set as a clock master to transmit, to the second PHY (142), a clock signal defining timing for transmitting and receiving signals. A device controller (151), in response to detection of a set event, completes initialization of the first PHY (121) set as the clock master after completion of initialization of the second PHY (142) set as a clock slave.

Abstract: A slave unit that is a communication apparatus according to the present invention includes: a frame relaying unit that receives, among communication frames received by a reception port, a communication frame to be relayed to the other apparatus and outputs the received communication frame to a transmission port; a frame transmitting unit that generates a communication frame and outputs the communication frame to the transmission port; and a transmission-frame arbitrating unit that regulates output of the communication frame to the transmission port performed by the frame transmitting unit in a guard time that is a period including a time period in which arrival of the communication frame transmitted in a network in a fixed cycle is expected.

Abstract: A slave unit that is a communication apparatus according to the present invention includes: a frame relaying unit that receives, among communication frames received by a reception port, a communication frame to be relayed to the other apparatus and outputs the received communication frame to a transmission port; a frame transmitting unit that generates a communication frame and outputs the communication frame to the transmission port; and a transmission-frame arbitrating unit that regulates output of the communication frame to the transmission port performed by the frame transmitting unit in a guard time that is a period including a time period in which arrival of the communication frame transmitted in a network in a fixed cycle is expected.

Abstract: The present invention is to provide a method for refining hydrogen with a hydrogen refining device in which the inside of a cell is divided into a primary side space and a secondary side space by palladium alloy capillaries each having one end being closed and a tube sheet supporting the open end of the palladium alloy capillaries, in which impurity-containing hydrogen is introduced from the primary side space to allow hydrogen to permeate the palladium alloy capillaries so as to collect pure hydrogen from the secondary side space. The method for refining hydrogen has a capability of decreasing the removed amount of gas containing impurities and efficiently collecting pure hydrogen from the secondary side space. From hydrogen with 1000 ppm or less of impurities as raw material hydrogen, gas containing impurities that does not penetrate the palladium alloy capillaries is removed from the primary side space at the flow rate of 10% or less of the introduction flow rate of the raw material hydrogen.

Abstract: The present invention provides ammonia purification means to remove impurities such as oil with a negative effect on vapor deposition from inexpensive commercially available industrial crude ammonia and from crude ammonia recovered from the gallium nitride compound semiconductor process and to continuously supply the purified ammonia to the gallium nitride compound semiconductor process. The oil removing device removing oil from crude ammonia containing oil as impurities includes an oil filter cylinder accommodating a filtration element cylindrically formed from a filtration membrane processed into a shape of pleat, honeycomb, or space structure; and an oil adsorption cylinder filled with activated carbon. The ammonia purification apparatus is provided with the oil removing device; a catalyst cylinder filled with a catalyst containing nickel as an active component; and an adsorption cylinder filled with synthetic zeolite.

Abstract: The present invention provides ammonia purification means to remove impurities such as oil with a negative effect on vapor deposition from inexpensive commercially available industrial crude ammonia and from crude ammonia recovered from the gallium nitride compound semiconductor process and to continuously supply the purified ammonia to the gallium nitride compound semiconductor process. The oil removing device removing oil from crude ammonia containing oil as impurities includes an oil filter cylinder accommodating a filtration element cylindrically formed from a filtration membrane processed into a shape of pleat, honeycomb, or space structure; and an oil adsorption cylinder filled with activated carbon. The ammonia purification apparatus is provided with the oil removing device; a catalyst cylinder filled with a catalyst containing nickel as an active component; and an adsorption cylinder filled with synthetic zeolite.

Abstract: A resin-made molded cylinder head cover, which is light in weight and relatively thin particularly at a flange part thereof comprises a cover part that is rectangular in shape and has a plurality of plug holes aligned in a longitudinally extending center area of the cover part; a flange part that is integral with and extends around a periphery of the cover part, so that the cylinder head cover is shaped like a rectangular shallow dish; and thicker elongate bead portions that are integral with the cover part and extend respectively along laterally opposed sides of the longitudinally extending center area, each bead portion being thicker than a general area of the cover part.

Abstract: A communication device includes a transmission port and a reception port communicating with other network units, a system bus I/F unit communicating with a synchronous target, n (n is an integer of 2 or more) delay counters counting a predetermined period of time, a delay-counter control unit that, upon receiving a synchronous packet input with a predetermined cycle from the reception port, causes the delay counters to count a cycle that is n times as long as the predetermined cycle and controls the delay counters such that counts of the delay counters are cleared at different timings, and a synchronous-pulse output unit outputting a synchronous pulse to the synchronous target through the system bus I/F unit when there is the counter whose count value after being cleared becomes equal to a synchronous-pulse output value.

Abstract: The present invention is to provide a means for easily replacing palladium alloy capillaries in a hydrogen purification device formed by using hydrogen separation membrane formed from the palladium alloy capillaries. The hydrogen purification device can be easily disassembled into a palladium alloy membrane unit and a storage structure thereof. A palladium alloy membrane unit is provided with a plurality of palladium alloy capillaries, a disk-shaped tube sheet supporting the palladium alloy capillaries, a pure hydrogen discharge pipe having a cylinder being in close contact with a periphery of the tube sheet at one end, a joint connecting with a pure hydrogen outlet of the storage structure at the other end, and preferably a joint being in close contact with an opening of a container of the storage structure at a position between the cylinder and the outlet joint.

Abstract: The present invention is to provide a method for refining hydrogen with a hydrogen refining device in which the inside of a cell is divided into a primary side space and a secondary side space by palladium alloy capillaries each having one end being closed and a tube sheet supporting the open end of the palladium alloy capillaries, in which impurity-containing hydrogen is introduced from the primary side space to allow hydrogen to permeate the palladium alloy capillaries so as to collect pure hydrogen from the secondary side space. The method for refining hydrogen has a capability of decreasing the removed amount of gas containing impurities and efficiently collecting pure hydrogen from the secondary side space. From hydrogen with 1000 ppm or less of impurities as raw material hydrogen, gas containing impurities that does not penetrate the palladium alloy capillaries is removed from the primary side space at the flow rate of 10% or less of the introduction flow rate of the raw material hydrogen.

Abstract: The present invention is to provide a means for easily replacing palladium alloy capillaries in a hydrogen purification device formed by using hydrogen separation membrane formed from the palladium alloy capillaries. The hydrogen purification device can be easily disassembled into a palladium alloy membrane unit and a storage structure thereof. A palladium alloy membrane unit is provided with a plurality of palladium alloy capillaries, a disk-shaped tube sheet supporting the palladium alloy capillaries, a pure hydrogen discharge pipe having a cylinder being in close contact with a periphery of the tube sheet at one end, a joint connecting with a pure hydrogen outlet of the storage structure at the other end, and preferably a joint being in close contact with an opening of a container of the storage structure at a position between the cylinder and the outlet joint.

Abstract: A communication device includes a transmission port and a reception port communicating with other network units, a system bus I/F unit communicating with a synchronous target, n (n is an integer of 2 or more) delay counters counting a predetermined period of time, a delay-counter control unit that, upon receiving a synchronous packet input with a predetermined cycle from the reception port, causes the delay counters to count a cycle that is n times as long as the predetermined cycle and controls the delay counters such that counts of the delay counters are cleared at different timings, and a synchronous-pulse output unit outputting a synchronous pulse to the synchronous target through the system bus I/F unit when there is the counter whose count value after being cleared becomes equal to a synchronous-pulse output value.

Abstract: A semiconductor laser module includes: a semiconductor laser outputting a laser light from an output-facet side of a waveguide which has a first narrow portion identical in width, a wide portion wider than the first narrow portion, a second narrow portion narrower than the wide portion, a first tapered portion between the first narrow portion and the wide portion and increasing in width toward the wide portion, and a second tapered portion between the wide portion and the second narrow portion and decreasing in width toward the second narrow portion; and an optical fiber to which the laser light is input has an optical-feedback unit reflecting a predetermined wavelength of light. The semiconductor laser is enclosed in a package with one end of the optical fiber. The optical-feedback unit has a first optical-feedback unit set at a predetermined reflection center wavelength determining an oscillation wavelength and a second optical-feedback unit.

Abstract: A method of manufacturing a nitride substrate includes the following steps. Firstly, a nitride crystal is grown. Then, the nitride substrate including a front surface is cut from the nitride crystal. In the step of cutting, the nitride substrate is cut such that an off angle formed between an axis orthogonal to the front surface and an m-axis or an a-axis is greater than zero. When the nitride crystal is grown in a c-axis direction, in the step of cutting, the nitride substrate is cut from the nitride crystal along a flat plane which passes through a front surface and a rear surface of the nitride crystal and does not pass through a line segment connecting a center of a radius of curvature of the front surface with a center of a radius of curvature of the rear surface of the nitride crystal.