摘要:
A surface acoustic wave filter comprises a first electrode structure array which is formed on the piezoelectric substrate, and includes an input/output IDT, two receipt IDTs formed outside the input/output IDT and two reflectors formed outside the two receipt IDTs, and a second electrode structure array which is formed on the piezoelectric substrate and includes an input/output IDT, two receipt IDTs formed outside the input/output IDT and two reflectors formed outside the two receipt IDTs, which are concatenated with each other. In a case that the surface acoustic wave filter is represented by a symmetrical lattice-type circuit which is expressed by a serial arm impedance and a parallel arm impedance and is electrically equivalent to the same, at least two resonances of the serial arm impedance and at least three resonances of the parallel arm impedance are used to form a passband. The surface acoustic wave filter can have wide bands and low spurious signal.
摘要:
A substrate for an electronic device comprises a base, an adhesion film stacked on the base, and a conductor film stacked on the adhesion film. The adhesion film is a non-epitaxial film including a crystal having a wurtzite crystal structure. The electronic device comprises the substrate and a functional film having a specific function and disposed on the substrate.
摘要:
A substrate for an electronic device comprises a base, an adhesion film stacked on the base, and a conductor film stacked on the adhesion film. The adhesion film is a non-epitaxial film including a crystal having a wurtzite crystal structure. The electronic device comprises the substrate and a functional film having a specific function and disposed on the substrate.
摘要:
This invention provides a new condensed imidazole compound possessing inhibitory activity of adhesion molecule expression. This invention also provides a therapeutic and prophylactic agent for diabetic nephritis and/or autoimmune disease and an immunosuppressor for organ transplantation.
摘要:
A dilute copper alloy material includes, based on a total mass of the dilute copper alloy material, 2 to 12 mass ppm of sulfur, 2 to 30 mass ppm of oxygen, 4 to 55 mass ppm of titanium, and a balance of pure copper and inevitable impurity. A part of the sulfur and the titanium forms a compound or an aggregate of TiO, TiO2, TiS or Ti—O—S, and an other part of the sulfur and the titanium forms a solid solution. TiO, TiO2, TiS and Ti—O—S distributed in a crystal grain of the dilute copper alloy material are not more than 200 nm, not more than 1000 nm, not more than 200 nm and not more than 300 nm, respectively, in particle size thereof, and not less than 90% of particles distributed in a crystal grain of the dilute copper alloy material are 500 nm or less in particle size.
摘要:
The present invention provides an agent for the prophylaxis or treatment of diabetes, which is associated with a ferwer side effects such as body weight gain, adipocyte accumulation, cardiac hypertrophy and the like, and which contains a compound represented by the formula: wherein each symbol is as defined in the specification, or a salt thereof or a prodrug thereof.
摘要:
An object of the invention is to provide a piezoelectric bulk acoustic wave device having a high effective electromechanical coupling constant and allowing a fractional bandwidth to be broadened when applied to a filter and a normalized frequency variable width to be broadened when applied to an oscillator. Another object of the invention is to provide a miniature piezoelectric bulk acoustic wave device capable of operating at a high frequency of several hundreds of megahertz while maintaining a high electromechanical coupling constant. The piezoelectric bulk acoustic wave device includes a piezoelectric substrate constructed of a single crystal or oriented crystal body of potassium niobate and having a pair of major surfaces, and at least one pair of opposed electrodes formed on the major surfaces of the piezoelectric substrate, respectively, wherein the device utilizes thickness vibration propagating along the major surfaces.
摘要:
A first electrode structure row formed on a piezoelectric substrate, and including N1 pairs of an input/output IDT, N2 pairs of a connection IDT, and reflectors is cascade-connected to a second electrode structure row formed on the piezoelectric substrate, and including N1 pairs of an input/output IDT, N2 pairs of a connection IDT, and reflectors, the connection IDT of the first electrode structure row, and the connection IDT of the second electrode structure row being arranged electrically symmetric with respect to the cascade-connected plane. The pair number N1 of the input/output IDT is different from the pair number N2 of the connection IDT. When a normalized electrode film thickness of the input/output IDT and the connection IDT is represented by h/L, the pair number N1 of the input/output IDT satisfies the following formula 43-11(h/L).ltoreq.N1.ltoreq.61-11(h/L). The surface acoustic wave device can realize good filter characteristics of low insertion losses, small amplitude ripples and group delay time ripples, relatively large specific bandwidths, good shape factors, large attenuation, and is useful as filters for use in mobile communications, etc., especially as intermediate frequency filters for use in digital communications.
摘要:
A weldment includes metal materials that are welded to each other. At least one of the metal materials includes pure copper including an inevitable impurity, more than 2 mass ppm of oxygen, and an additive element selected from the group consisting of Mg, Zr, Nb, Fe, Si, Al, Ca, V, Ni, Mn, Ti and Cr. A method of manufacturing a weldment includes melting a dilute copper alloy material by SCR continuous casting and rolling at a molten copper temperature of not less than 1100° C. and not more than 1320° C. to make a molten metal, forming a cast bar from the molten metal, forming a dilute copper alloy member by hot-rolling the cast bar, and welding the dilute copper alloy member to a metal material. The dilute copper alloy material includes the pure copper, more than 2 mass ppm of oxygen, and the additive element,
摘要:
The present invention provide a compound of the formula (I) wherein ring A represents an aromatic ring optionally having substituents; B, Y and Ya are the same or different and each represents a bond, etc.; R1 and R2 are the same or different and each represents a hydrogen atom, etc.; R3 represents a hydrogen atom, etc.; R4 and R5 are the same or different and each represents a hydrogen, etc.; R6 represents an indolyl group optionally having substituents; and Z and Za are the same or different and each represents a hydrogen atom, etc.; or a salt thereof or a prodrug thereof, having a somatostatin receptor binding inhibition activity and is useful for preventing and/or treating diseases associated with somatostatin.
摘要翻译:本发明提供式(I)的化合物,其中环A表示任选具有取代基的芳环; B,Y和Ya是相同或不同的,每个代表一个债券等; R 1和R 2相同或不同,各自表示氢原子等; R 3表示氢原子等; R 4和R 5相同或不同,各自表示氢等; R 6表示任选具有取代基的吲哚基; Z和Za相同或不同,各自表示氢原子等; 或其盐或其前药,具有生长抑素受体结合抑制活性,并且可用于预防和/或治疗与生长抑素相关的疾病。