Abstract: An optical transmission device improved in optical coupling loss between light guides and optical elements and excelling in efficiency of light utilization is provided with light guides having light incidence/emission sections on plural stepped portions, a substrate that fixes the light guides, and light receiving elements and light emitting elements arranged on the substrate to match the light incidence/emission sections of the light guides. The light receiving elements and the light emitting elements are arranged on the substrate by use of optical connectors. Coefficients of linear expansion and the rates of dimensional variation due to water absorption (or alternatively due to water absorption rates) of the light guides and the substrate here are substantially equalized.

Abstract: The present invention provides a method for reducing propagation errors in an optical communication system which includes an optical element and an optical transmission medium. In the present invention, a relative position of the optical element and an end face of the optical transmission medium, at which light emitted from the optical element is incident, is set to a (relative) position which is different from a relative position of the optical element and the end face of the optical transmission medium with which energy of light that is propagated is maximized. Then, light emitted from the optical element is propagated in multimode by the optical transmission medium.

Abstract: In a device of the present invention for allowing signal light to enter a light guide body using an optical fiber, a light guide body, which is constituted by dispersing particles for scattering the signal light in an optical medium, is selected as a light guide path which requires an area where a light diffusing function is performed just after incidence of the signal light. An optical connecting material intervenes between one end of the optical fiber from which the signal light is output and opposed one end surface of a particle dispersing light guide body and a desired diffusing function is obtained.

Abstract: A diffusion part diffuses an optical signal emitted from the end face of an optical fiber of an input light guide. An input reflection part reflects the optical signal diffused by the diffusion part in the direction of an output reflection part. A transparent medium guides the optical signal reflected by the input reflection part in the direction of the output reflection part. Output reflection parts reflect optical signals guided in the transparent media in the direction of optical fibers of output light guides. The optical signal reflected by the output reflection part is incident on the end face of the optical fiber and is transmitted over the output light guide.

Abstract: An FCC catalyst which not only deactivates catalyst poison metals, such as nickel, vanadium and the like, in feedstock oils, inhibits the generation of hydrogen or coke, has excellent cracking activity and bottom oil-treating ability, and can yield a gasoline and LCO fraction in high yields, but also retains the performances on a high level over long and has an improved catalyst life; and an FCC method using the catalyst. The FCC catalyst has a compound of a bivalent metal or of bivalent and trivalent metals showing an XRD pattern of a carbonate of the bivalent metal; an inorganic oxide matrix and the compound dispersed therein; or an inorganic oxide matrix and the compound dispersed therein together with a crystalline aluminosilicate zeolite, and relates to an FCC method in which at least one of the catalysts are used in combination with an FCC catalyst obtained by evenly dispersing a crystalline aluminosilicate zeolite in an inorganic oxide matrix.

Abstract: In an optical wiring board, an optical components including a planar optical waveguide, a plurality of first optical fibers optically connected via a transmissive diffusion plate to a light incident face of the waveguide, and a plurality of second optical fibers optically connected to a light emitting face of the waveguide is placed on a support board. The optical component is sealed by a sealing member made of a resin.

Abstract: A transmission unit of a signal transmission device includes: a transmission-side detection unit that detects image information from an inputted electrical signal; a receiving unit that receives, from a reception unit, a status signal representing an arrival status of an outputted optical signal; and a control unit that controls an electrical-optical conversion unit on the basis of the detection result of the transmission-side detection unit and the status signal of the receiving unit so that the output of the optical signal is shut down in at least one of a case where image information is not included in an electrical signal and a case where an optical signal has not arrived.

Abstract: In a device of the present invention for allowing signal light to enter a light guide body using an optical fiber, a light guide body, which is constituted by dispersing particles for scattering the signal light in an optical medium, is selected as a light guide path which requires an area where a light diffusing function is performed just after incidence of the signal light. An optical connecting material intervenes between one end of the optical fiber from which the signal light is output and opposed one end surface of a particle dispersing light guide body and a desired diffusing function is obtained.

Abstract: A first optical wave guide 36 and a second optical wave guide 40 are connected to both sides of a planer optical waveguide 32, respectively. The other ends 36b, 40b of the first and second optical wave guides 36, 40 are extended over an upper surface 20 of an optical wiring circuit board 18. An electric wiring circuit 14 is connected to the other ends 36b, 40b of the first and second optical wave guides 36, 40, thereby constituting an optical wiring circuit 16. A plurality of optical wiring circuits 16 are superimposed on one another to thereby form an optical wiring circuits layered body 12. The electric wiring circuit 14 can be connected from one surface of the optical wiring circuit board 18, which makes it possible to facilitate the connection thereof.

Abstract: A catalyst for fluidized catalytic cracking of a heavy hydrocarbon oil, which comprises (A) catalyst particles comprising a compound of a bivalent metal or a compound of bivalent and trivalent metals, wherein said compound shows an XRD pattern of a carbonate of the bivalent metal, and (B) catalyst particles comprising a crystalline aluminosilicate zeolite and a mixture compound of aluminum and at least one metal selected from the group consisting of the Group IVa metals of the Periodic Table.

Abstract: The utilization efficiency of light is to be enhanced. Optical signals are brought to incidence on incidence/emission portions provided on the end face of a light transmitting medium where a reflective optical diffusion layer is arranged. The incident optical signals, upon reaching the reflective optical diffusion layer, are diffusively reflected in both vertical and lateral directions. Of the diffused light, not only the part of it coming directly incident on each of the plural incidence/emission portions formed on the end face of the light transmitting medium but also the rest propagates while being reflected by sides of the light transmitting medium and is emitted from the plural incidence/emission portions.

Abstract: A test kit for intracellular introduction of a protein and/or peptide and a method of such intracellular introduction, make it possible for a protein and/or peptide to be introduced into cells efficiently and in an expedient manner while preventing the function of the introduction target protein and/or peptide from being reduced. The above test kit comprises a container containing a cationic group-containing polymer and a container containing a reagent for coupling or binding the cationic group-containing polymer to the protein and/or peptide, or comprises a container containing a cationized conjugate to be coupled to the protein and/or peptide. The above method comprises using a conjugate generated by coupling or binding a cationic group-containing polymer to a protein and/or peptide as a carrier for the introduction target protein and/or peptide.

Abstract: An optical transmission device improved in optical coupling loss between light guides and optical elements and excelling in efficiency of light utilization is to be provided. The optical transmission device is provided with light guides having light incidence/emission sections on plural stepped portions, a substrate which fixes the light guides, and light receiving elements and light emitting elements arranged on the substrate to match the light incidence/emission sections of the light guides. The light receiving elements and the light emitting elements are arranged on the substrate by use of optical connectors. Coefficients of linear expansion and the rates of dimensional variation due to water absorption (or water absorption rates) of the light guides and the substrate here are substantially equalized.

Abstract: An optical distributor includes an optical-signal input port, a light receiving device, a light emitting device, a light splitter, and optical signal output ports. The light receiving device converts an optical light signal input to the optical-signal input port into an electric signal. The light emitting device converts the electric signal into an optical signal. The optical splitter 14 splits the converted optical signal into two optical signals. The optical-signal output ports output the split optical signals. The light receiving device includes a light receiving element, a pre-amplifier, and a limiting amplifier. The light emitting device includes a light-source drive element and a light emitting element.

Abstract: In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through the optical transmission path. When a light signal is not emitted from all of the nodes, a dummy signal which is an AC-like signal is emitted to the optical transmission path. Therefore, an optoelectric conversion section can be always set to an active state, and the signal recognizability can be prevented from being lowered.

Abstract: The present invention provides an FCC catalyst which not only deactivates catalyst poison metals, such as nickel, vanadium and the like, in feedstock oils, inhibits the generation of hydrogen or coke, has excellent cracking activity and bottom oil-treating ability, and can yield a gasoline and LCO fraction in high yields, but also retains the performances on a high level over long and has an improved catalyst life; and an FCC method using the catalyst.

Abstract: A conjugate which enables a protein or peptide to be transduced into cells and a method for transducing the protein or peptide into cells using the conjugate with time and amount controllability and efficiency.

Abstract: A diffusion part diffuses an optical signal emitted from the end face of an optical fiber of an input light guide. An input reflection part reflects the optical signal diffused by the diffusion part in the direction of an output reflection part. A transparent medium guides the optical signal reflected by the input reflection part in the direction of the output reflection part. Output reflection parts reflect optical signals guided in the transparent media in the direction of optical fibers of output light guides. The optical signal reflected by the output reflection part is incident on the end face of the optical fiber and is transmitted over the output light guide.

Abstract: A conjugate which enables a protein or peptide to be introduced into cells and a method for introducing the protein or peptide into cells using the conjugate with time and amount controllability and efficiency.

Abstract: An optical bus 30 optically connects each board of a signal processing section 22 and each board of a transmission/reception section 40 for transmitting an optical signal output to the optical bus 30 by each board of the signal processing section 22 to each board of the transmission/reception section 40 in a non-block state. In contrast, the optical bus 30 transmits an optical signal output to the optical bus 30 by each board of the transmission/reception section 40 to each board of the signal processing section 22 in a non-block state.