Abstract: When changeover switch (26) selects the output of L band filter (23), changeover switch (28) is turned off and mixer (29) is operated as an amplifier such that the oscillation frequency of local oscillator (31) is controlled based on data fed to data terminal (37) and a channel selection can be performed in mixer (32). When changeover switch (26) selects the output of V band filter (25), changeover switch (28) is turned on and a channel selection is performed based on data fed to data terminal (37) in mixer (29). With this arrangement, the need for a tuning filter is eliminated and a broadband tuner not requiring manpower for adjustments can be provided.

Abstract: A cylinder array of diamond having a dent in its cylinder top face is manufactured by subjecting a cylinder array of diamond to a plasma etching.

Abstract: Crystals of (S)-2[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole or salts thereof, useful as excellent antiulcer drugs.

Abstract: A tube for medical care comprises a tube body comprising an elastomer and a photocatalyst layer containing titanium oxide and having a great number of microcracks is formed on the surface of the tube body. The tube retains elasticity, and also can secure the close contact of the elastomer surface with the photocatalyst layer and thus has a titanium oxide photocatalyst layer fixed firmly to the tube surface, due to the stress relaxation by the great number of microcracks. The tube exhibits excellent antibacterial activity due to the photocatalyst layer. The tube exhibits more excellent antibacterial activity, when another antibacterial substance is carried on the photocatalyst layer.

Abstract: A titanium dioxide film (2) having at least photocatalytic activity, whose light linear transmittance corresponding to light having a wavelength of 550 nm is not less than 50% and whose thickness is 0.1 to 5 &mgr;m or so, is formed on a transparent substrate (1) constituted by a glass plate or the like. Preferably, a precoat film (3), which has optical transmissivity and is constituted by a SiO2 film having a thickness of 0.02 to 0.2 &mgr;m or so, is provided between the transparent substrate (1) and the titanium dioxide film (2). Thereby, excellent photocatalytic action and optical transmissivity can be obtained. Moreover, members composing various structures such as a glass window, which are especially required to have optical transparency, can be further provided with photocatalytic activities.

Abstract: Frequency conversion into a first intermediate frequency which is higher than a received frequency band is performed for a received signal by using a mixer 63 and a PLL 64. Next, an output of the mixer 63 is frequency converted into a second intermediate frequency of base band by using a quadrature mixer formed by mixers 67, 68 and a phase shifter 70. At this time, a frequency of local oscillation signal of a PLL 69 supplied to the quadrature mixer is controlled so as to be switched, depending on a position of received segment, between a frequency which is higher than the first intermediate frequency and a frequency which is lower than the same.

Abstract: A novel crystal of (R)-2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole or a salt thereof of the present invention is useful for an excellent antiulcer agent.

Abstract: A method for highly hydrophilifying the surface of an article by photoexcitation of a semiconductor photocatalyst and maintaining the hydrophilicity is disclosed. A layer containing a photocatalyst is formed on a substrate. Onto the surface of the layer are fixed a hydroxyl group upon photoexcitation of the photocatalyst and a physically adsorbed water molecule in the vicinity of the hydroxyl group upon photoexcitation of the photocatalyst. Thus, the surface is highly hydrophilified. Further, this surface, simultaneously with the hydrophilification, exhibits higher hydrophobicity.

Abstract: A photocatalyst composite is provided which comprise a substrate having particles of a photocatalyst such as titanium oxide, adhered thereon via a less degradative adhesive such as a fluorinated polymer comprising a copolymer of a vinyl ester and/or vinyl ether and a fluoroolefin, or a silicon based polymer or cement. Furthermore, a process for producing the photocatalyst composite and a coating composition containing the photocatalyst composite are provided.

Abstract: A novel crystal of (R)-2-[[[3-methyl-4-(2, 2,2-trifluoroethoxy)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole or a salt thereof of the present invention is useful for an excellent antiulcer agent.

Abstract: A molecule mixed magnetic material having at least a kind of a magnetic ion unit of a molecular magnetic material showing a ferromagnetism and at least 1 kind of a magnetic ion unit of a molecular magnetic material showing a ferrimagnetism for controlling the magnetic characteristics of the molecular magnetic materials, wherein the magnetic characteristics are changeable by controlling the existing ratio of both the magnetic ion units, or the magnetic characteristics are changeable by the change of temperature or by the irradiation of light.

Abstract: A cylinder array of diamond having a dent in its cylinder top face is manufactured by subjecting a cylinder array of diamond to a plasma etching.

Abstract: A titanium dioxide film (2) having at least photocatalytic activity, whose light linear transmittance corresponding to light having a wavelength of 550 nm is not less than 50% and whose thickness is 0.1 to 5 &mgr;m or so, is formed on a transparent substrate (1) constituted by a glass plate or the like. Preferably, a precoat film (3), which has optical transmissivity and is constituted by a SiO2 film having a thickness of 0.02 to 0.2 &mgr;m or so, is provided between the transparent substrate (1) and the titanium dioxide film (2). Thereby, excellent photocatalytic action and optical transmissivity can be obtained. Moreover, members composing various structures such as a glass window, which are especially required to have optical transparency, can be further provided with photocatalytic activities.

Abstract: A cylinder array of diamond having a dent in its cylinder top face is manufactured by subjecting a cylinder array of diamond to a plasma etching.

Abstract: A titanium dioxide film having at least photocatalytic activity, whose light linear transmittance corresponding to light having a wavelength of 550 nm is not less than 50 % and whose thickness is 0.1 to 5 &mgr;m or so, is formed on a transparent substrate constituted by a glass plate or the like. Preferably, a precoat film, which has optical transmissivity and is constituted by a SiO2 film having a thickness of 0.02 to 0.2 &mgr;m or so, is provided between the transparent substrate and the titanium dioxide film. Thereby, excellent photocatalytic action and optical transmissivity can be obtained. Moreover, members composing various structures such as a glass window, which are especially required to have optical transparency, can be further provided with photocatalytic activities.

Abstract: The inventive photoreactive device has a semiconductor and an oxidation-reduction material. The semiconductor has a conduction band with a potential and being capable of producing electrons under the irradiation of light on the semiconductor. The oxidation-reduction material has a redox potential being positive compared with the potential of the conduction band. The semiconductor supplies electrons into the oxidation-reduction material to reduce it under the irradiation of light for storing the electrons. The stored electrons are discharged from the oxidation-reduction material into a metal material to prevent the corrosion of the metal material.

Abstract: A method for producing a porous diamond according to the present invention comprises steps of forming an anodized alumina layer, which functions as a mask, on a diamond substrate; and performing a plasma etching treatment to form pores on the diamond substrate, which pores have the same arrangement as those of the anodized alumina mask.

Abstract: The surface of a substrate is coated with an abrasion-resistant photocatalytic coating comprised of a semiconductor photocatalyst. Upon irradiation by a light having a wavelength of an energy higher than the bandgap energy of the photocatalyst, water is chemisorbed onto the surface in the form of hydroxyl groups (OH−) whereby the surface of the photocatalytic coating is rendered highly hydrophilic. In certain embodiments, the surface of a mirror, lens, or windowpane is coated with the photocatalytic coating to exhibit a high degree of antifogging function. In another embodiment, an article or product coated with the photocatalytic coating is disposed outdoors and the highly hydrophilic surface thereof is self-cleaned as it is subjected to rainfall. In a still another embodiment, an article is coated with the photocatalytic coating and, when the article is soaked in, rinsed by or wetted with water, fatty dirt and contaminants are readily released without resort to a detergent.

Abstract: A photocatalyst composite is provided which comprise a substrate having particles of a photocatalyst such as titanium oxide, adhered thereon via a less degradative adhesive such as a fluorinated polymer comprising a copolymer of a vinyl ester and/or vinyl ether and a fluoroolefin, or a silicon based polymer or cement. Furthermore, a process for producing the photocatalyst composite and a coating composition containing the photocatalyst composite are provided.

Abstract: A method of producing a needle-like diamond structure including the steps of forming a layer of anodized alumina on a diamond substrate, the anodized alumina having a plurality of through holes; vapor-depositing a substance resistant to plasma etching by a vacuum vapor-depositing method to form dots on said diamond substrate, wherein the layer of anodized alumina acts as a mask for the vapor deposition; removing the anodized alumina; and performing a plasma etching treatment while using the dots as a mask, thereby forming regularly-arranged, needle-like diamond columns.