Abstract: There is provided a radio apparatus including: a radio transceiver configured to transmit and receive a signal via a plurality of antennas; and a processor configured to control the radio transceiver so that a signal transmitted by a first antenna among the plurality of antennas is received by second and third antennas neighboring the first antenna and detect at least difference between amplitudes of the signals received by the respective second and third antennas or difference between phases of the signals received by the respective second and third antennas.

Abstract: A polyolefin resin composition, containing: a polyolefin resin; and cellulose microfibrils, in which a content of the cellulose microfibrils is 0.5 to 20 parts by mass, with respect to 100 parts by mass of an entire resin component in the polyolefin resin composition, a molded article and a back door for a vehicle.

Abstract: A wireless communication system including: a wireless terminal configured to: establish each of at least one session between the wireless terminal and each of at least one server via a wireless communication with a wireless base station, and transmit each of at least one specified signal for maintaining the established at least one session using a periodic radio resource allocated to the wireless terminal, and a control apparatus including a processor configured to: obtain each of at least one time-out time set for each of the at least one session, determine a resource periodicity of the periodic radio resource based on the shortest time-out time among the at least one time-out time, and determine each of at least one signal periodicity for transmitting each of the at least one specified signal based on the determined resource periodicity.

Abstract: An object of the present invention is to provide a non-invasive monitor for measuring regional saturation of oxygen which is light and compact, and has excellent portability and excellent handleability to make an operator handle the monitor easily. A non-invasive monitor for measuring regional saturation of oxygen according to the present invention includes a sensor unit containing a printed circuit board on which a light emitting unit and a light receiving unit are mounted; a main body unit containing a computation processing unit, a display unit, and a power source unit; a sensor holder (30) for holding the sensor unit while the light emitting unit and the light receiving unit are disposed in an aperture portion; a sensor pressing board; a connecting unit for electrically connecting the sensor unit and the main body unit; and a headband.

Abstract: A colored optical fiber including a glass optical fiber; a primary coating layer that covers the glass optical fiber; a secondary coating layer that covers the primary coating layer; and a colored layer that coats the secondary coating layer. The relaxation modulus after 24 hours at 60° C. of of the layers coated is 140 MPa or less.

Abstract: A polyolefin-based thermoplastic elastomer and a crosslinked body of the same which can undergo a silane-crosslinking process excellent in productivity and have a rubber property required as a substitute material for EPDM is disclosed herein and can use a silane-crosslinkable ethylene-propylene copolymer characterized in that an organic peroxide (B) and a silane coupling agent (C) are compounded with an ethylene-propylene copolymer resin (A) which comprises 5 to 25% by mass of an ethylene component and 75 to 95% by mass of a propylene component, and whose MFR measured at 230° C. and with a load of 2.16 kg applied is 20.0 g/10 min or less. and further a compounded amount of the organic peroxide is 0.1 to 0.6 pts. mass based on 100 pts. mass of the ethylene-propylene copolymer resin (A) and a one-minute half-life temperature of the organic peroxide is 175.2° C. or less.

Abstract: The present invention provides an optical fiber in which transmission loss is not easily increased when the optical fiber is dipped in water and then dried and also which has a solvent resistant property and a micro-bend resistant property. An optical fiber according to one embodiment of the present invention is an optical fiber in which at least two layers of coating resin coat the circumference of a glass optical fiber. When a Yang's modulus of the first coating layer of the coating resin is defined by PY (MPa) and an elution rate of the coating resin after dipping in 60° C. hot water for 168 hours is defined by E (mass·%), a formula of 1.8?E?8.61×PY+1.40 is satisfied.

Abstract: A colored optical fiber including a glass optical fiber; a primary coating layer that covers the glass optical fiber; a secondary coating layer that covers the primary coating layer; and a colored layer that coats the secondary coating layer. The relaxation modulus after 24 hours at 60° C. of of the layers coated is 140 MPa or less.

Abstract: The present invention provides a colored optical fiber that shows anti-microbend property and hot-water resistance, an optical fiber ribbon that utilizes the same, and an optical fiber cable. It is a colored optical fiber 1, which comprises two coating layers of a primary coating layer 31 and a secondary coating layer 32, wherein either one of the primary coating layer 31 or the secondary coating layer 32 is colored, both coating layers have equilibrium elastic moduli of 60 MPa or less, and the secondary coating layer 32 has a relaxation modulus of 410 MPa or more, an optical fiber ribbon 4 that utilizes it, and an optical fiber cable 8.

Abstract: An optical fiber, which is less likely to increase its transmission loss even when it is exposed to a high-humidity environment or immersed in water, is provided. The optical fiber comprises a glass fiber and at least two coating layers (a soft layer and a hard layer) coated at the circumference of the glass fiber, wherein the limit-adhesion strength between the glass fiber and the coating layer under a hot and humid environment is 0.5N/10 mm or more. Preferably, the glass-transition temperature of the hard layer is less than 90° C.

Abstract: A method of manufacturing an optical fiber, comprises applying a UV cured resin to an outer circumference of a running glass optical fiber, forming an accompanying flow composed of an inert gas near a surface of the resin by passing the glass optical fiber immediately after having the resin being applied through an atmosphere of the inert gas, and forming a coating by irradiating the resin coated with the accompanying flow with ultraviolet ray to cure the resin while the glass optical fiber accompanied by the accompanying flow is passed through a UV transmission tube to which a gas containing oxygen is supplied.

Abstract: The present invention provides a colored coated optical fiber which hardly has an increase in transmission loss even when immersed in water. A colored coated optical fiber according to one embodiment of the present invention includes a glass optical fiber, a primary coating layer covering the glass optical fiber, a secondary coating layer covering the primary coating layer, and a colored layer covering the secondary coating layer. A ratio of a thermal expansion coefficient of a laminate including the secondary coating layer and the colored layer covering the secondary coating layer to that of the secondary coating layer is 0.98 or more and 1.03 or less. A ratio of a glass transition temperature based on a dynamic viscoelasticity within a temperature range from ?100° C. to 150° C. of the laminate to that of the secondary coating layer is 0.96 or more and 1.03 or less.

Abstract: The present invention provides an optical fiber in which transmission loss is not easily increased when the optical fiber is dipped in water and then dried and also which has a solvent resistant property and a micro-bend resistant property. An optical fiber according to one embodiment of the present invention is an optical fiber in which at least two layers of coating resin coat the circumference of a glass optical fiber. When a Yang's modulus of the first coating layer of the coating resin is defined by PY (MPa) and an elution rate of the coating resin after dipping in 60° C. hot water for 168 hours is defined by E (mass·%), a formula of 1.8?E?8.61×PY+1.40 is satisfied.

Abstract: The present invention provides an optical fiber in which the transmission loss increase is suppressed even under a high-humidity condition or under a water-immersed condition. A colored optical fiber (22) according to an embodiment of the present invention is a colored optical fiber (22) formed by applying a colored layer to an optical fiber (14) including a glass optical fiber coated with at least a double-layered coating layer of a soft layer and a hard layer, and the ratio of thermal expansion coefficient between the coating layer after the colored layer of the colored optical fiber (22) is applied and the coating layer of the optical fiber (14) before the colored layer is applied is 0.87 or more.

Abstract: A back-surface-incidence semiconductor light element includes: a semiconductor substrate of a first conductivity type; a first semiconductor layer of a first conductivity type on the semiconductor substrate; a light absorbing layer on the first semiconductor layer; a second semiconductor layer on the light absorbing layer; and an impurity diffusion region of a second conductivity type in a portion of the second semiconductor layer. A region including a p-n junction between the first semiconductor layer and the impurity diffusion region, and extending through the light absorbing layer, is a light detecting portion that detects light incident on a back surface of the semiconductor substrate. A groove in the back surface of the semiconductor substrate surrounds the light detecting portion, as viewed in plan.

Abstract: A method for manufacturing a semiconductor photodetector includes: forming an insulating film on a semiconductor substrate; forming an electrode on and in contact with a predetermined area of a surface of the semiconductor substrate; forming a resist on the insulating film after forming the electrode; forming a power supply layer of a metal on the resist and the electrode; plating a surface of a portion of the power supply layer with a metal coating, after forming the power supply layer, the portion overlying and being in contact with the electrode; after the plating, etching and removing a part of the power supply layer leaving a portion that is covered with the metal coating and is an extension of the electrode; and removing the resist after etching the power supply layer.

Abstract: A back-surface-incidence semiconductor light element includes: a semiconductor substrate of a first conductivity type; a first semiconductor layer of a first conductivity type on the semiconductor substrate; a light absorbing layer on the first semiconductor layer; a second semiconductor layer on the light absorbing layer; and an impurity diffusion region of a second conductivity type in a portion of the second semiconductor layer. A region including a p-n junction between the first semiconductor layer and the impurity diffusion region, and extending through the light absorbing layer, is a light detecting portion that detects light incident on a back surface of the semiconductor substrate. A groove in the back surface of the semiconductor substrate surrounds the light detecting portion, as viewed in plan.

Abstract: There is provided an electronic document printing system comprising an electronic document generator and a print controller, the electronic document generator comprising a superimposed-image information incorporating unit that incorporates, into the electronic document data, a superimposed image and mark information for invalidating the superimposed image, and the print controller comprising: a condition storage unit that stores a condition of electronic document data in which a superimposed image is to be invalidated when the electronic document data is printed, as a condition to be satisfied by mark information included in the electronic document data; a determination unit that determines whether or not mark information included in electronic document data satisfies the condition; and a controlling unit that instructs the printing device to invalidate the superimposed image in the electronic document data and print the document image when the determination unit determines that the condition is satisfied.

Abstract: A coated optical fiber of the present invention comprises a glass fiber coated by at least two coating layers (a soft layer and a hard layer), wherein the glass surface of the glass fiber, where the at least two coating layers of the optical fiber are removed, has a peak intensity ratio of 0.6 or more in C3H7O+ (m/z 59) or C4H9O+ (m/z 73) with respect to Si+ (m/z 28) peak in cation analysis of TOF-SIMS. The optical fiber suppresses increase in its transmission loss even when it is exposed to a high-humidity environment or immersed in water.

Abstract: According to the present invention, there is provided an optical fiber, an optical fiber ribbon and an optical fiber cable that reduce both the increase in transmission loss and the decrease in strength. According to an embodiment of the present invention, there is provided an optical fiber in which an outer circumferential surface of an optical fiber is coated with a primary coating layer. In the optical fiber, the primary coating layer includes a ultraviolet curable resin, and the ultraviolet curable resin contains 0.05 or more and 0.75 or less parts by weight of a reactive silane coupling agent and 0.05 or more and 0.75 or less parts by weight of an unreactive silane coupling agent.