Abstract: The present invention relates to a folded dipole antenna comprising a magnetic material comprising a hexagonal Z-type ferrite and/or a hexagonal Y-type ferrite as a main component in which a radiation element and a reflection element each having a folded dipole structure are disposed, and an RF tag comprising the folded dipole antenna and an IC chip connected to the folded dipole antenna. The RF tag according to the present invention has a smaller size than that of the conventional RF tags and is not susceptible to adverse influence from ambient environments, and can be operated at an UHF band or surrounding frequency bands thereof.

Abstract: The present invention relates to a magnetic antenna for information communication using a magnetic field component which is a magnetic antenna or an RF tag capable of satisfying both reduction in size and improvement in communication sensitivity. More specifically, the present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, said magnetic antenna comprising a magnetic core and a plurality of coils formed on the magnetic core in which the coils each have an inductance L1 satisfying the specific relational formula, and are formed with bank winding when the coils are lap-wound so as to prevent increase in parasitic capacitance thereof, connected in parallel to each other in an electric circuit, and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula.

Abstract: A composite magnetic antenna for information communication utilizes a magnetic field component as well as a composite RF tag using the composite magnetic antenna, which can be embedded in metals while maintaining a sufficient communication sensitivity unlike conventional RF tags which are unusable in the metal embedding applications. The composite RF tag for transmitting and receiving information using an electromagnetic induction method includes a magnetic antenna on which an IC is mounted, and an insulating material and a metal material or a conductive material which are formed around the magnetic antenna. The magnetic antenna includes a central core formed of a magnetic material, and an electrode material formed into a coil around the central core. The insulating material is formed around the magnetic antenna except for one longitudinal end of the coil of the magnetic antenna. The metal material or the conductive material is formed on an outside of the insulating material.

Abstract: In measuring phosphoric acid by the use of an enzyme cycling system using a dehydrogenase together with a thio-NADP, a thio-NAD, a reduced thio-NADP or a reduced thio-NAD as a coenzyme, phosphoric acid is measurable in a wide concentration range from a low concentration to a high concentration by measuring phosphoric acid after previous removal of free phosphoric acid in reagent components for the measurement.

Abstract: Disclosed is a test instrument for measuring an analyte in a liquid sample by a noble metal colloid aggregation measurement method. The test instrument involves a reaction chamber in which at least the liquid sample is to be reacted with a reagent, wherein the reagent is adhered on at least a part of a surface constituting the reaction chamber in a dried state, and the reagent enables the measurement of the analyte by a noble metal colloid aggregation measurement method.

Abstract: The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance L1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.

Abstract: The present invention relates to a composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna mounted with an IC, and a resin layer formed around the magnetic antenna, wherein the magnetic antenna comprises a central core formed of a magnetic material and a coil-shaped electrode material disposed around the core. The RF tag according to the present invention comprises the magnetic antenna surrounded by the resin, and therefore can provide a composite magnetic RF tag which can minimize adverse influence by surrounding water or metals in view of maintenance of tools or parts to which the composite RF tag is mounted, and is free from occurrence of any failure or cracking.

Abstract: A magnetic antenna, suitable for use in an RFID tag and an RFID tag reader/writer, which operates stable even if brought close to a metallic object and suitable for mass-production, and a board mounted with the magnetic antenna. The magnetic antenna has a coil with a magnetic layer and a conductive layer provided on the magnetic layer via an insulating layer or has a plurality of coils each with a magnetic layer having a square or rectangular shape and arranged radially.

Abstract: A magnetic antenna, suitable for use in an RFID tag and an RFID tag reader/writer, which operates stable even if brought close to a metallic object and suitable for mass-production, and a board mounted with the magnetic antenna. The magnetic antenna has a coil with a magnetic layer and a conductive layer provided on the magnetic layer via an insulating layer or has a plurality of coils each with a magnetic layer having a square or rectangular shape and arranged radially.

Abstract: There is provided a magnetic antenna, suitable for use in an RFID tag and an RFID tag reader/writer, which operates stable even if brought close to a metallic object and suitable for mass-production, and a board mounted with the magnetic antenna. The magnetic antenna has a coil comprising a magnetic layer and a conductive layer provided on the magnetic layer via an insulating layer. Alternatively, the magnetic antenna has a plurality of coils each comprising a magnetic layer having a square or rectangular shape and arranged radially. One ends of the coils are connected in series or parallel to one another by the magnetic layers thereof such that the coils have the same polarity. An insulating layer is provided on one or both outer surface of the coils, and a conductive layer is provided on an outer surface of at least one of the insulating layers. The magnetic antenna is produced using an LTCC technology.

Abstract: By using an antibody which is covalently bonded to a water soluble polymer as an antibody to be used in a competitive immunoagglutination assay in a homogeneous system, a protein antigen at a high concentration can be accurately assayed in an undiluted system without resorting to dilution.

Abstract: In the case of assaying the level of complex AB in a sample which likely contains the complex AB composed of substance A with another substance B, the complex is assayed by the competitive homogeneous assay method with the use of reagents including a reagent containing partner C specifically binding to substance A, a reagent containing partner D specifically binding to substance B, a reagent containing fine particles carrying substance A or an analogue thereof and substance B or an analogue thereof, and a reagent containing partner C specifically binding to substance A and partner D specifically binding to substance B. Thus, the complex in the sample can be easily assayed. The above method is applicable to general-purpose biochemical automatic analyzers.

Abstract: The present invention relates to a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity. The magnetic antenna of the present invention is used for transmitting and receiving information using an electromagnetic induction method, and comprises a central core formed of a magnetic material and a non-magnetic material, a coil-shaped electrode material wound around the core, and an insulating layer formed on at least one outside surface of the core on which the coil-shaped electrode material is provided, in which the magnetic material is separated into two or more parts through the non-magnetic material when viewed in a section of the core which is perpendicular to a magnetic flux passing therethrough.

Abstract: The present invention relates to a composite magnetic antenna for information communication utilizing a magnetic field component as well as a composite RF tag using the composite magnetic antenna, which can be embedded in metals while maintaining a sufficient communication sensitivity unlike conventional RF tags which were unusable in the metal embedding applications.

Abstract: A (100) silicon substrate is prepared having an insulating film formed on front and back surfaces of the silicon substrate. A resist pattern is formed on the insulating film and partially etched to form an etching mask on the front and back surfaces. The silicon substrate is subjected to anisotropical etching dependent upon an orientation to form a concave horn and a through hole, the concave horn having a bottom with a (100) plane and four inclined sidewalls with a (111) plane, and the through hole gradually narrowing from the front and back surfaces toward an inside of the silicon substrate and having a bottleneck portion with the (111) plane at an intermediate position in the silicon substrate. An LED chip is mounted on the bottom of the concave horn to form an LED package. The LED package is provided which presents high wiring reliability and simplified manufacture processes.

Abstract: By using an antibody which is covalently bonded to a water soluble polymer as an antibody to be used in a competitive immunoagglutination assay in a homogeneous system, a protein antigen at a high concentration can be accurately assayed in an undiluted system without resorting to dilution.

Abstract: This invention relates to drinks and foods having osteogenetic function, each of which comprises as an active ingredient an effective amount of a culture of a propionic acid bacterium and/or a lactic acid bacterium, said culture containing 2-amino-3-carboxy-1,4-naphthoquinone; and preventives and/or remedies for metabolic bone diseases, each of which comprises as an active ingredient a naphthoquinone compound selected from the group consisting of 2-amino-3-carboxy-1,4-naphthoquinone, 1,4-naphthoquinone, 2-hydroxy-1,4-naphthoquinone, 2,3-dichloro-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 8-hydroxy-1,4-naphthoquinone, 2-(?-hydroxy-?-methylpentenyl)-5,8-dihydroxy-1,4-naphthoquinone and salts thereof. These cultures and naphthoquinones promote bone metabolism and increase bone mass and bone strength.

Abstract: In measuring phosphoric acid by the use of an enzyme cycling system using a dehydrogenase together with a thio-NADP, a thio-NAD, a reduced thio-NADP or a reduced thio-NAD as a coenzyme, phosphoric acid is measurable in a wide concentration range from a low concentration to a high concentration by measuring phosphoric acid after previous removal of free phosphoric acid in reagent components for the measurement.

Abstract: A (100) silicon substrate is prepared having an insulating film formed on front and back surfaces of the silicon substrate. A resist pattern is formed on the insulating film and partially etched to form an etching mask on the front and back surfaces. The silicon substrate is subjected to anisotropical etching dependent upon an orientation to form a concave horn and a through hole, the concave horn having a bottom with a (100) plane and four inclined sidewalls with a (111) plane, and the through hole gradually narrowing from the front and back surfaces toward an inside of the silicon substrate and having a bottleneck portion with the (111) plane at an intermediate position in the silicon substrate. An LED chip is mounted on the bottom of the concave horn to form an LED package. The LED package is provided which presents high wiring reliability and simplified manufacture processes.

Abstract: A wavelength multiplex transmission apparatus including a divided wavelength band unit which controls signal light in each of a plurality of divided wavelength bands into which a transmission wavelength band on a transmission path is divided, a light source which is provided in the divided wavelength band unit and outputs dummy light, and a control unit which controls power of a divided band multiplexed light, which is multiplexed light of the signal light and the dummy light, to have predetermined level by controlling the power of dummy light.