Abstract: Provided is a compound having a high ICG content that has high accumulation property in a tumor and has a large intensity of a photoacoustic signal emitted from the tumor even when a time period elapses after administration. Specifically, provided is a hyaluronic acid derivative to which polyethylene glycol and an ICG derivative are conjugated.

Abstract: An endoscope flexible tube according to the present invention includes: a spiral tube configured such that a belt-like plate is spirally wound; an inner cylindrical member disposed inside an end part of the spiral tube; and an outer cylindrical member that is disposed outside the end part of the spiral tube, and holds the end part of the spiral tube between the inner cylindrical member and the outer cylindrical member. The inner cylindrical member has an outer diameter that is set larger than an inner diameter of the spiral tube, and the end part of the spiral tube is deformed to enlarge the inner diameter of the end part, and is externally fitted to the inner cylindrical member.

Abstract: An electric power supplying device includes a main power supply that supplies electric power to each component of an apparatus, an auxiliary power supply that supplies electric power to an assisted component in the apparatus, the assisted component requiring power supply during start-up time of the apparatus and having a whose start-up time being equal to or longer than a predetermined period of time, a discharging control circuit that controls the auxiliary power supply to cause the auxiliary power supply to output a voltage, the output voltage being lower than a voltage output by the main power supply and being equal to or more than a lower limit voltage of a voltage range that the assisted component is operable, and a power supply prevention circuit that prevents the auxiliary power supply from supplying power to a component other than the assisted component in the apparatus.

Abstract: A wireless communications system includes a first base station of a first operator; a first terminal configured to wirelessly connect to the first base station; a second base station of a second operator different from the first operator; and a second terminal configured to wirelessly connect to a second base station. At least one of the first base station and the second base station transmits broadcast information that indicates a predetermined bandwidth to be used when direct communication between the first terminal and the second terminal is performed, the predetermined bandwidth being included in a radio frequency bandwidth assigned to first operator. The second terminal, based on the broadcast information, uses the predetermined bandwidth and performs the direct communication with the first terminal.

Abstract: There is provided an ICG-loaded polymer nanoparticle that is dynamically stable, prevents the leakage of contained ICG and the resulting discoloration, and has a high molar absorbance coefficient. The particle contains a hydrophilic dye having a sulfonate group and a hydrophobic polymer, and the particle further contains at least one of a lipid having a positively charged region, a nicotinic acid derivative and a thiamine derivative.

Abstract: A wireless communication system comprising a transmitter configured to transmit a data signal and a control signal to the same mobile station and a control unit configured to regulate transmission power of the control signal in accordance with a reception status of the control signal in the mobile station.

Abstract: A wireless system includes a plurality of terminals and a wireless base station. Each of the plurality of terminals determines a priority of a local terminal related to transmission of a certain signal according to a certain rule when the certain signal is not received from the wireless base station.

Abstract: An electric power supplying device includes a main power supply that supplies electric power to each component of an apparatus, an auxiliary power supply that supplies electric power to an assisted component in the apparatus, the assisted component requiring power supply during start-up time of the apparatus and having a whose start-up time being equal to or longer than a predetermined period of time, a discharging control circuit that controls the auxiliary power supply to cause the auxiliary power supply to output a voltage, the output voltage being lower than a voltage output by the main power supply and being equal to or more than a lower limit voltage of a voltage range that the assisted component is operable, and a power supply prevention circuit that prevents the auxiliary power supply from supplying power to a component other than the assisted component in the apparatus.

Abstract: A commercial AC power shutdown detecting apparatus includes a photocoupler including a light-emitting element and a light-receiving element, a lighting circuit that flows a pulsating current through the light-emitting element of the photocoupler to turn on and off light of the light-emitting element, a charging-discharging circuit including a capacitor and a resistor that charges the capacitor via the resistor when the light-emitting element is turned off, and discharges the capacitor via the light-receiving element and the a resistor when the light-emitting element is turned on, and a comparing circuit that compares a voltage value between capacitor terminals with a predetermined voltage value intermediate between a maximum voltage value between the capacitor terminals when the light-emitting element repeats turning light on and off and the consistent DC voltage value, and outputs a shutdown detection signal if the voltage value between the capacitor terminals exceeds the predetermined voltage value.

Abstract: A communication system includes a first communication terminal and a second communication terminal that performs direct communication with the first communication terminal. The first communication terminal controls transmission power of a second reference signal which is a partial reference signal among a plurality of reference signals so as to reach known transmission power, the plurality of reference signals being transmitted with first data and used for demodulating the first data, controls transmission power of a first reference signal which is another reference signal other than the second reference signal among the plurality of reference signals so as to reach transmission power linked to transmission power of the first data, and transmits the plurality of reference signals subjected to transmission power control to the second communication terminal.

Abstract: A radio communication apparatus specifies a radio resource area in which a radio communication apparatus searches for a control signal, on the basis of information about the use of a plurality of frequency bands. Then, the radio communication apparatus transmits a control signal addressed to the radio communication apparatus in the specified radio resource area. The radio communication apparatus calculates the specified radio resource area on the basis of the information about the use of the plurality of frequency bands. Then, the radio communication apparatus searches signals in the calculated radio resource area, out of signals received from the radio communication apparatus, and thereby detects the control signal addressed to the radio communication apparatus.

Abstract: A communication system includes a first communication terminal and a second communication terminal that performs direct communication with the first communication terminal. The first communication terminal controls transmission power of a second reference signal which is a partial reference signal among a plurality of reference signals so as to reach known transmission power, the plurality of reference signals being transmitted with first data and used for demodulating the first data, controls transmission power of a first reference signal which is another reference signal other than the second reference signal among the plurality of reference signals so as to reach transmission power linked to transmission power of the first data, and transmits the plurality of reference signals subjected to transmission power control to the second communication terminal.

Abstract: An iron oxide particle constituting a Resovist (trademark) absorbs a small quantity of light in a near infrared region and emits a weak photoacoustic signal. According to a particle having a catechol-like compound and iron atoms, the particle having a ratio of the number of moles of the catechol-like compound to the number of moles of the iron atoms of 270/10,000 or more, light absorption in the near infrared region increases and a strong photoacoustic signal can be transmitted.

Abstract: A radio communication apparatus specifies a radio resource area in which a radio communication apparatus searches for a control signal, on the basis of information about the use of a plurality of frequency bands. Then, the radio communication apparatus transmits a control signal addressed to the radio communication apparatus in the specified radio resource area. The radio communication apparatus calculates the specified radio resource area on the basis of the information about the use of the plurality of frequency bands. Then, the radio communication apparatus searches signals in the calculated radio resource area, out of signals received from the radio communication apparatus, and thereby detects the control signal addressed to the radio communication apparatus.

Abstract: A first radio communication device includes: a control unit that, when a second radio communication device is currently connected to the first radio communication device, notifies radio communication devices other than the first radio communication device of information on the second radio communication device; and a transmission unit that transmits, to the second radio communication device, information on the radio communication devices which have been notified of the information on the second radio communication device. The second radio communication device includes a transmission unit that selects, on the basis of the information on the radio communication devices which has been transmitted from the transmission unit of the first radio communication device, one of the radio communication devices and transmits to the selected radio communication device a control signal for controlling handover.

Abstract: A mobile user terminal, which communicates with a base station in an intermittent fashion, the mobile user terminal includes a radio transmitter which transmits downlink channel quality information indicating downlink channel quality and an uplink pilot signal to a base station in an intermittent fashion; and a transmit time controller which synchronizes transmit time of the downlink quality information and transmit time of the uplink pilot signal relative to each other, such that the downlink quality information and the uplink pilot signal are sent in adjacent different timings in a period corresponding to a state of intermittent communicate.

Abstract: A radio communication apparatus transmitting a data signal and a control signal to another radio communication apparatus where a controller controls transmission power of the control signal separately from transmission power of the data signal based on a feedback signal from the other radio communication apparatus. A method for controlling transmission power of a control channel includes determining a transmission power of a control channel based on a response from user equipment and controlling transmission power of the control channel separately from transmission power of a data signal based on the determined transmission power of a control channel.

Abstract: A radio communication apparatus to perform communication with another radio communication apparatus by using a plurality of frequency bands, the radio communication apparatus includes, a receiving unit configured to receive, when performing a random access procedure to said another radio communication apparatus, a control message by using a first frequency band as a response to a preamble message transmitted by the radio communication apparatus, the control message instructing communication using a second frequency band different from the first frequency band; and a control unit configured to perform, when the control message corresponds to the preamble message, data communication with said another radio communication apparatus by using the second frequency band.

Abstract: A radio communication method including: storing each of a plurality of associations between each resource size and each data size by a terminal, each data size indicating each size of data capable of being transmitted using an associated resource size, receiving specified data, first control information, and second control information from a base station by the terminal, the specified data being mapped across a plurality of radio resources, each of the plurality of radio resources having each specified frequency bandwidth and each specified time period, the first control information indicating the number of the plurality of radio resources, the second control information indicating an individual resource size allocated for the specified data in each of the plurality of radio resources, obtaining a total data size of the specified data by the terminal based on the first control information, the second control information, and the plurality of associations.

Abstract: Provided is a compound having a high ICG content that has high accumulation property in a tumor and has a large intensity of a photoacoustic signal emitted from the tumor even when a time period elapses after administration. Specifically, provided is a hyaluronic acid derivative to which polyethylene glycol and an ICG derivative are conjugated.