摘要:
An antenna comprising a radiator which is configured to radiate electromagnetic wave inside of an antenna housing, and at least one dielectric which is configured to be contributory to directivity angle of the electromagnetic wave in the vertical direction, wherein the at least one dielectric is directly attached to the antenna housing ahead of the radiator.
摘要:
The disclosure provides an antenna device, which includes a waveguide antenna having wall surfaces and for emitting a radio wave in a direction substantially perpendicular to an emission face that is one of wall surfaces of the waveguide antenna extending in an elongated direction of the waveguide antenna, a plate-shape two-dimensional opening slots for beam formation formed in the waveguide antenna on the emission face side, a power feed waveguide module arranged in the rear face of the waveguide antenna opposite from the emission face and for supplying electric power to the waveguide antenna, and a cylindrical radome having a substantially circular cross-section of a diameter that is substantially equal to a length of the emission face in a direction perpendicular to the long-side direction so that the waveguide antenna is contained in the radome so as to be arranged at substantially the center of the radome.
摘要:
This disclosure provides an antenna device, which includes a waveguide having a rectangular cross-section and formed with a plurality of slots in at least one side face thereof. The plurality of slots are arranged in a tube axis direction. At least one of the plurality of slots is formed with a predetermined inclination angle from a plane perpendicular to a tube axis direction of the waveguide.
摘要:
A helical substituted polyacetylene structure including a substrate and a substituted polyacetylene with a periodic main chain having a helical periodic structure, wherein the substituted polyacetylene is disposed inclined on the surface of the substrate with the inclination angle between the main helical axis of the substituted polyacetylene and the surface of the substrate falling in a range of 60° or more and 90° or less. A device structure in which a first electrode, the substituted polyacetylene with the periodic main chain having a helical periodic structure and a second electrode are sequentially disposed on a substrate.
摘要:
According to one embodiment, a disk drive has a magnetic disk and a magnetic head having a spin-torque oscillator. The disk drive further has a head amplifier IC configured to supply a write signal and a drive signal to the magnetic head. The write signal corresponds to write data. The drive signal is supplied to generate a high-frequency magnetic field. The head amplifier IC continuously supplies a drive signal of normal level to the spin-torque oscillator, and supplies a drive signal of high level higher than the normal level, only for a prescribed time after the polarity inversion of the write signal.
摘要:
A compound represented by formula (I) wherein the symbols in the formula are the same meanings as those in specification, salts thereof, solvates thereof, or prodrugs thereof binds to DP receptor and shows antagonistic activity for DP receptor. Thus, it is useful for prevention and/or treatment of diseases such as allergic disease (e.g., allergic rhinitis, allergic conjunctivitis, atopic dermatitis, bronchial asthma and food allergy), systemic mastocytosis, disorders accompanied by systemic mast cell activation, anaphylaxis shock, bronchoconstriction, urticaria, eczema, diseases accompanied by itch (e.g., atopic dermatitis and urticaria), diseases (e.g., cataract, retinal detachment, inflammation, infection and sleeping disorders) which is generated secondarily as a result of behavior accompanied by itch (e.g., scratching and beating), inflammation, chronic obstructive pulmonary diseases, ischemic reperfusion injury, cerebrovascular accident, chronic rheumatoid arthritis, pleurisy, ulcerative colitis, etc. Since it specifically binds to DP receptor and binds weakly to other prostaglandins receptors, they can be pharmaceuticals having little side effect.
摘要:
This disclosure provides a slot antenna, which includes a tubular electromagnetic wave radiation part having a hollow space, a plurality of electromagnetic wave radiating slots for radiating electromagnetic waves being formed in at least a part of a side surface of the radiation part and a plurality of feeding slots for being inputted with the electromagnetic waves being arrayed in line in another part of the side surface opposing to the radiating slots, a feeding part having a hollow space, extending along the feeding slot array, and for feeding power from the outside of the radiation part to the feeding slots, and a power guiding part having a hollow space and for guiding the power to the feeding part, the power guiding part extending in a direction orthogonal to the array direction of the feeding slots and in parallel to the center axis of the radiation part, from a location of the feeding part corresponding to at least one of the feeding slots.
摘要:
A steel strip is formed into a cylinder so that opposite ends of the steel strip face each other, while continuously conveying the steel strip. The opposite ends are melted across the entire thickness by irradiating the opposite ends with a high-energy-density beam while applying a pressure with squeeze rolls. A seam is formed by joining the opposite ends, and excess weld metal of the seam on the outer and inner sides of the obtained welded steel pipe is removed by cutting. A repaired seam is then formed by remelting and solidifying a region on the inner side of the welded steel pipe, the region having a depth of 0.5 mm or more from the surface and a width of double or more the width of the seam, and in addition, the center line of the seam is made to coincide with the center line of the repaired seam.
摘要:
The invention provides a novel block polymer applicable to a light-emitting device. The block polymer has an electron-transporting block and a hole-transporting block, wherein the main chain backbone of the block polymer is polyacetylene.
摘要:
A composite having a metal substance bonded to a block polymer. The composite is capable of electric bonding via the metallic substance. A device in which a pair of electrodes are connected via a polymer chain of the block polymer. The block polymer has in at least a part thereof a block structure of a repeating unit that has in a side chain thereof an organic functional group for bonding to at least one of the metallic entities. The polymer main chain of the block structure has a helical shape. In the composite of a metal and the block polymer, a part of the block structure of the block polymer is bonded to the metal species. In the device having the block polymer and an electrode composed of the metallic substance, a part of the block structure of the block polymer is bonded to the metallic substance.