Abstract: Three elements of a first (¼) wavelength element and a second (¼) wavelength element which have a length of (¼) wavelength at an arbitrary frequency designated in advance and a half-wavelength element which has a length of a half-wavelength at the arbitrary frequency are arranged in a three-orthogonal state where those are orthogonal to each other, one end portion of the first (¼) wavelength element is joined to one end portion of the second (¼) wavelength element, another end portion of the second (¼) wavelength element is joined to one end portion of the half-wavelength element, a feeding point for antenna power feeding is arranged in a position in which the one end portion of the first (¼) wavelength element is joined to the one end portion of the second (¼) wavelength element, and an antenna is formed as a one-wavelength twisted Z-shaped three-orthogonal dipole antenna.

Abstract: Three elements of a first (¼) wavelength element and a second (¼) wavelength element which have a length of (¼) wavelength at an arbitrary frequency designated in advance and a half-wavelength element which has a length of a half-wavelength at the arbitrary frequency are arranged in a three-orthogonal state where those are orthogonal to each other, one end portion of the first (¼) wavelength element is joined to one end portion of the second (¼) wavelength element, another end portion of the second (¼) wavelength element is joined to one end portion of the half-wavelength element, a feeding point for antenna power feeding is arranged in a position in which the one end portion of the first (¼) wavelength element is joined to the one end portion of the second (¼) wavelength element, and an antenna is formed as a one-wavelength twisted Z-shaped three-orthogonal dipole antenna.

Abstract: An antenna device comprises a case and an antenna element. The antenna element is arranged in the case and radiates a radio wave with a predetermined frequency which has a plane of polarization in parallel to a predetermined plane. The case is formed with a predetermined opening. The predetermined opening has two main openings and a coupling opening. The two main openings are apart from each other in a first direction perpendicular to the predetermined plane. The coupling opening couples the two main openings together in the first direction. The coupling opening has a size smaller than another size of each of the two main openings in a second direction perpendicular to the first direction. The predetermined opening forms a split ring resonator which resonates at the predetermined frequency and radiates a radio wave corresponding to the radio wave radiated from the antenna element.

Abstract: An antenna and a radio communication system that are capable of improving the design quality of the antenna at a low cost are provided. According to an example embodiment, an antenna (20) includes a parasitic antenna element (21) formed using a transparent conduction film, in which the parasitic antenna element (21) is not in contact with a feeding point (13) and is disposed near a feeding antenna element (11) of a radio communication apparatus (10) configured to function as a radio communicator, and an induction current is generated in the parasitic antenna element (21) by a driving current of the feeding antenna element.

Abstract: [Problem] To provide a dental resin-reinforced glass ionomer cement kit which can exhibit high adhesive property to tooth substance by a simple procedure without complicated operations and contains a dental tooth surface treatment material composition and a dental resin-reinforced glass ionomer cement composition. [Solution] To provide a dental resin-reinforced glass ionomer cement kit comprising a dental tooth surface treatment material composition (i) and a dental resin-reinforced glass ionomer cement composition (ii), wherein the dental tooth surface treatment material composition (i) contains (A) water-soluble organic solvent: 20% by mass or more and 79% by mass or less.

Abstract: Three elements of a first (¼) wavelength element and a second (¼) wavelength element which have a length of (¼) wavelength at an arbitrary frequency designated in advance and a half-wavelength element which has a length of a half-wavelength at the arbitrary frequency are arranged in a three-orthogonal state where those are orthogonal to each other, one end portion of the first (¼) wavelength element is joined to one end portion of the second (¼) wavelength element, another end portion of the second (¼) wavelength element is joined to one end portion of the half-wavelength element, a feeding point for antenna power feeding is arranged in a position in which the one end portion of the first (¼) wavelength element is joined to the one end portion of the second (¼) wavelength element, and an antenna is formed as a one-wavelength twisted Z-shaped three-orthogonal dipole antenna.

Abstract: An RFID tag is provided with a base member, an antenna portion and an IC chip. A split-ring resonator portion of the antenna portion has a first part and a second part. First end portions of the first part are provided with a first facing portion and a first connection portion, respectively. Second end portions of the second part are provided with a second facing portion and a second connection portion, respectively. The first and the second facing portions are apart from and face each other. A third end portion of the impedance matching portion is connected to the first part between the first facing portion and the first connection portion, and another third end portion is connected to the second part between the second facing portion and the second connection portion. The IC chip is connected to the first connection portion and the second connection portion.

Abstract: A joining member includes a first support portion supporting a first pole member in the longitudinal direction at the bottom surface, a second support portion supporting a second pole member in the longitudinal direction at the bottom surface, a first contact portion located on one side of the first support portion along the longitudinal direction of the first pole member and contacting the first pole member at the side surface, and a second contact portion located on one or the other side of the second support portion along the longitudinal direction of the second pole member and contacting the second pole member at the side surface. The first support portion and/or the first contact portion has a through portion in the bottom surface or the side surface. The second support portion and/or the second contact portion has a through portion in the bottom surface or the side surface.

Abstract: An antenna is configured to be soldered on a circuit board. The antenna comprises a main portion, at least one soldering terminal and at least one fixed portion. The main portion has a height in a vertical direction. The main portion is, at least in part, positioned below the soldering terminal in the vertical direction when the soldering terminal is soldered on the circuit board. The soldering terminal extends from the main portion along a horizontal plane perpendicular to the vertical direction. When the soldering terminal is soldered on the circuit board, the fixed portion is fixed on the circuit board at a location different from a location of the soldering terminal.

Abstract: Three elements of a first (¼) wavelength element and a second (¼) wavelength element which have a length of (¼) wavelength at an arbitrary frequency designated in advance and a half-wavelength element which has a length of a half-wavelength at the arbitrary frequency are arranged in a three-orthogonal state where those are orthogonal to each other, one end portion of the first (¼) wavelength element is joined to one end portion of the second (¼) wavelength element, another end portion of the second (¼) wavelength element is joined to one end portion of the half-wavelength element, a feeding point for antenna power feeding is arranged in a position in which the one end portion of the first (¼) wavelength element is joined to the one end portion of the second (¼) wavelength element, and an antenna is formed as a one-wavelength twisted Z-shaped three-orthogonal dipole antenna.

Abstract: An antenna member is configured to be mounted on a circuit board and to be used as an antenna. The antenna member has a split ring resonating portion, an impedance matching portion and a feed portion. The split ring resonating portion is provided with a facing portion which forms a split. The split ring resonating portion has a first side portion, a second side portion and an upper portion. The upper portion connects the first side portion and the second side portion with each other. The feed portion is provided on at least one of the first side portion and the second side portion. The impedance matching portion is positioned above the feed portion in an up-down direction perpendicular to a lateral direction. The impedance matching portion couples the first side portion and the second side portion with each other.

Abstract: According to one embodiment, an assembly ball includes a plurality of strips having a circumferential length. The strips are assembled convexly outward as viewed in the radial direction so as to substantially form a sphere as a whole. The strips each overlap other strips at their respective strip overlapping portions where the strips intersect with one another. The strip overlapping portions are joined by a strip joining member.

Abstract: An RFID tag is provided with a base member, an antenna portion and an IC chip. A split-ring resonator portion of the antenna portion has a first part and a second part. First end portions of the first part are provided with a first facing portion and a first connection portion, respectively. Second end portions of the second part are provided with a second facing portion and a second connection portion, respectively. The first and the second facing portions are apart from and face each other. A third end portion of the impedance matching portion is connected to the first part between the first facing portion and the first connection portion, and another third end portion is connected to the second part between the second facing portion and the second connection portion. The IC chip is connected to the first connection portion and the second connection portion.

Abstract: An object of the present invention is to provide a two-paste type dental resin-reinforced glass ionomer cement composition which exhibit high surface curability even under wet conditions, which makes difficult for the surface to become cloudy even if moisture comes in contact with at the initial stage of curing, exhibits high mechanical properties, low water absorption expansion and excellent coloring resistance in the set product and is also excellent in storage stability.

Abstract: An antenna member is configured to be mounted on a circuit board and to be used as an antenna. The antenna member has a split ring resonating portion, an impedance matching portion and a feed portion. The split ring resonating portion is provided with a facing portion which forms a split. The split ring resonating portion has a first side portion, a second side portion and an upper portion. The upper portion connects the first side portion and the second side portion with each other. The feed portion is provided on at least one of the first side portion and the second side portion. The impedance matching portion is positioned above the feed portion in an up-down direction perpendicular to a lateral direction. The impedance matching portion couples the first side portion and the second side portion with each other.

Abstract: According to one embodiment, an assembly ball includes a plurality of strips having a circumferential length. The strips are assembled convexly outward as viewed in the radial direction so as to substantially form a sphere as a whole. The strips each overlap other strips at their respective strip overlapping portions where the strips intersect with one another. The strip overlapping portions are joined by a strip joining member.

Abstract: An object of the present invention is to provide a dental resin-reinforced glass ionomer cement composition which exhibit high surface curability even under wet conditions, which makes it difficult for the surface to become cloudy even if moisture comes in contact with at the initial stage of curing, exhibits high mechanical properties, low water absorption expansion and excellent coloring resistance in the set product and is also excellent in storage stability. The dental resin-reinforced glass ionomer cement composition consisting of a powder material and a liquid material, wherein the powder material contains (a) acid-reactive glass powder, the liquid material contains (b) water, (c) polymer of acidic group-containing polymerizable monomer, (d) hydroxyl group-containing (meth)acrylate-based polymerizable monomer and (e) tri or more functional (meth)acrylamide-based polymerizable monomer, and at least one of the powder material and the liquid material contains (f) polymerization initiator.

Abstract: An antenna is configured to be soldered on a circuit board. The antenna comprises a main portion, at least one soldering terminal and at least one fixed portion. The main portion has a height in a vertical direction. The main portion is, at least in part, positioned below the soldering terminal in the vertical direction when the soldering terminal is soldered on the circuit board. The soldering terminal extends from the main portion along a horizontal plane perpendicular to the vertical direction. When the soldering terminal is soldered on the circuit board, the fixed portion is fixed on the circuit board at a location different from a location of the soldering terminal.

Abstract: Three elements of a first (¼) wavelength element and a second (¼) wavelength element which have a length of (¼) wavelength at an arbitrary frequency designated in advance and a half-wavelength element which has a length of a half-wavelength at the arbitrary frequency are arranged in a three-orthogonal state where those are orthogonal to each other, one end portion of the first (¼) wavelength element is joined to one end portion of the second (¼) wavelength element, another end portion of the second (¼) wavelength element is joined to one end portion of the half-wavelength element, a feeding point for antenna power feeding is arranged in a position in which the one end portion of the first (¼) wavelength element is joined to the one end portion of the second (¼) wavelength element, and an antenna is formed as a one-wavelength twisted Z-shaped three-orthogonal dipole antenna.