Abstract: A NOx generation amount control device includes: a cumulative amount calculating part calculating a cumulative NOx amount obtained by adding together a plurality of NOx exhaust amounts calculated for each prescribed time interval; a specifying part specifying a target value of the cumulative NOx amount associated with a movement distance of a moving body or an output value of an engine; an estimating part estimating a predicted NOx amount indicating a predicted cumulative NOx amount based on a rotation speed of the engine and a fuel injection amount; a judging part judging whether the sum of the predicted NOx amount and the cumulative NOx amount exceeds the target value; and a determining part determining a scheduled NOx exhaust amount and determining at least one of an opening degree of the EGR valve and an opening degree of a turbocharger.

Abstract: An alloy for biomedical use includes Zr as a main component, Nb the content of which is not less than 0.1% by weight and not greater than 25% by weight, Mo the content of which is not less than 0.1% by weight and not greater than 25% by weight, and Ta the content of which is not less than 0.1% by weight and not greater than 25% by weight. A tensile strength of the alloy is not less than 1000 MPa. A total content of Nb, Mo, and Ta in the alloy is not less than 2% by weight and not greater than 50% by weight. Mass susceptibility of the alloy is not greater than 1.50×10?6 cm3/g. A Young's modulus of the alloy is not greater than 100 GPa. Also disclosed is a medical product including the alloy and a method for producing the alloy.

Abstract: An alloy for biomedical use includes Zr as a main component, Nb the content of which is not less than 0.1% by weight and not greater than 25% by weight, Mo the content of which is not less than 0.1% by weight and not greater than 25% by weight, and Ta the content of which is not less than 0.1% by weight and not greater than 25% by weight. A tensile strength of the alloy is not less than 1000 MPa. A total content of Nb, Mo, and Ta in the alloy is not less than 2% by weight and not greater than 50% by weight. Mass susceptibility of the alloy is not greater than 1.50×10?6 cm3/g. A Young's modulus of the alloy is not greater than 100 GPa. Also disclosed is a medical product including the alloy and a method for producing the alloy.

Abstract: A complex of implant and cultured periodontal ligament cell sheet, that can be satisfactorily stabilized into the bone through periodontal ligament tissue, is provided. A fixture of the inserted implant is coated with calcium phosphate and the cultured periodontal ligament cell sheet is brought into intimate contact with the implant.

Abstract: Provided is a biocompatible alloy having low magnetic susceptibility and excellent mechanical properties. The biocompatible alloy according to the present invention contains: Zr as a main component; Nb of not less than 0.1% by mass and not greater than 25% by mass; Mo of not less than 0.1% by mass and not greater than 25% by mass; and Ta of not less than 0.1% by mass and not greater than 25% by mass. A total content of Nb, Mo, and Ta in the biocompatible alloy is not less than 2% by mass and not greater than 50% by mass. The biocompatible alloy has a mass susceptibility of not greater than 1.50×10?6 cm3/g. The biocompatible alloy has a Young's Modulus of not greater than 100 GPa. Various biocompatible implants and medical devices can be manufactured from the biocompatible alloy.

Abstract: Provided is a culture substrate having a periodic fine structure in the order of micrometers and a periodic fine structure in the order of nanometers on the same surface where stem cells are to be cultured on the surface.

Abstract: A dental prosthesis component which is a member for configuring a dental prosthesis provided with an artificial tooth root, which has a high strength and a good esthetic property. The dental prosthesis component which is a member for configuring a dental prosthesis provided with an artificial tooth root wherein the dental component is made of Zr-14Nb alloy, a surface layer containing ZrO2 as a main constituent and having a thickness of 20 ?m or more and less than 80 ?m is formed on the dental prosthesis component, and the surface has a brightness of Gy 8.0 or more of the color sheets according to Practical Color Co-ordinate System 201.

Abstract: The present invention is to provide a Co—Cr—Mo alloy excellent in mechanical properties such as yield strength and tensile strength. The present invention is a biocompatible Co—Cr—Mo alloy comprising, in mass %, more than 30% and not more than 36% of Cr, 5 to 8% of Mo, 0.20 to 0.65% of N, and the balance consisting of Co and inevitable impurities, and produced by layered manufacturing. The biocompatible Co—Cr—Mo alloy of the present invention preferably has a solidification structure of a dendrite structure and the primary arm spacing of the dendrite structure is not more than 5 ?m.

Abstract: Provided is a dental prosthesis component which is a member to configure a dental prosthesis provided with an artificial tooth root, which have high strength and a good esthetic property. The dental prosthesis component (12),(13) to configure a dental prosthesis (10) provided with an artificial tooth root (12), which are made of Zr-14Nb alloy, wherein a surface layer containing ZrO2 and having a thickness of less than 80 ?m as a main ingredient is formed on the components, and the surface has a brightness of Gly 8.0 or more of the color sheets according to Practical Color Co-ordinate System 201.

Abstract: Disclosed is a polymer brush composite including a substrate, a solid layer disposed on the substrate and containing at least one of a metal or a metal oxide, and a plurality of polymer chains penetrating the solid layer in such a manner that one end of each of the polymer chains is disposed on the upper side of the substrate and the other end of each the polymer chains is exposed at a surface of the solid layer on an opposite side of the solid layer to the substrate. The polymer brush composite exhibits good adhesion between an organic polymer compound and an inorganic material and has the surface the organic polymer compound and the inorganic material uniformly coexist.

Abstract: This invention provides a process for producing a material for a hard tissue contact tool, which can satisfactorily impart functionality and can improve surface treatment efficiency, and a hard tissue contact tool. The process for producing a material for a hard tissue contact tool comprises the step of subjecting an electroconductive material having a surface formed of at least one material selected from the group consisting of zirconium, a zirconium compound, and a zirconium alloy to cathode polarization treatment in an aqueous electrolyte solution containing an effective amount of hydrogen peroxide. The production process can produce a material for a hard tissue contact tool which can realize efficient precipitation of calcium phosphate on its surface upon implantation in a living body.

Abstract: Provided is a titanium-nickel alloy improved in corrosion resistance due to the reduced Ni content in the surface layer. Since a film (modified layer) extremely reduced in Ni concentration compared to the interior can be formed on the surface of a titanium-nickel alloy, by applying electrolysis treatment in a properly controlled electrolytic solution, the corrosion resistance of the alloy is improved. Specific examples of the electrolytic solution may include a mixture of glycerol, lactic acid and water (H2O).

Abstract: A medical appliance having a metal surface in which a hydrophilic organic compound having a polar group is directly fixed to the metal surface in accordance with an electrochemical reaction without intermediate layers; and a process for producing a medical appliance which comprises dipping a material for a medical appliance having a metal surface and an electrode into a solution comprising a hydrophilic organic compound having a polar group, and fixing the hydrophilic organic compound to the metal surface of the material for a medical appliance in accordance with an electrochemical reaction by applying a voltage between a cathode and an anode using the material for a medical appliance as the cathode and the electrode as the anode. The medical appliance exhibits excellent lubricating property since the metal surface is tightly coated with a thin layer of the hydrophilic organic compound.

Abstract: Ferritic stainless steel was produced by the melting method. The ferritic stainless steel was worked to the shape of a medical device for living soft tissue to obtain a medical device body. The medical device body was brought into contact with gas including nitrogen at a 800° C. treatment temperature or more to make the ferritic stainless steel forming the medical device body absorb the nitrogen and transform at least part of the ferritic stainless steel to austenite.

Abstract: A method for manufacturing a stainless steel product, which comprises contacting a bulk product of a ferritic stainless steel having been formed into a desired shape through melting with an inert gas containing nitrogen at 800° C. or higher, to thereby convert the structure of the whole or a part of the bulk product to austenite and produce an austenitic product or a product having a two-phase structure comprised of ferrite and austenite, respectively. The method allows the reduction of the manufacturing cost of a formed austenitic stainless steel product to a satisfactorily low level, which results in the manufacture of a stainless steel product having satisfactory characteristics in both of strength and corrosion resistance at a satisfactorily low cost.