Abstract: An evaluation apparatus, an evaluation method, and an evaluation program applicable to a quality evaluation of sintered bodies are provided. The evaluation apparatus includes: an acquisition unit configured to acquire a cross-sectional image obtained by photographing a cross-section of a sintered body group stained with a staining solution; a generation unit configured to extract a saturation component for each of sintered bodies from the cross-sectional image, thereby to generate a saturation component image; and a visualization unit configured to visualize the saturation component image.

Abstract: Provided is a composition for forming a coating layer of an optical fiber, the composition comprising a compound having a structure represented by the following formula (I): *—NH—CO—N(R1)—R2—SiR3n—(OR4)3-n??(I) wherein, R1 is a hydrogen atom, an alkyl group, or an aryl group, R2 is a methylene group optionally substituted with a halogen, a C2-10 alkylene group that may have a heteroatom or an atomic group having a heteroatom between carbon atoms and may optionally be substituted with a halogen, or a phenylene group that may have a substituent, R3 is an alkyl group, and R4 is a C1-6 alkyl group, * being a bond and n indicating an integer of 0 or more and 2 or less.

Abstract: [Problem] To provide a radiation curable resin composition which is suitable as a primary material for optical fibers, while having a high curing rate by means of irradiation of radiation [Solution] A radiation polymerizable composition for forming an optical fiber primary coating layer, said composition containing: (A) a urethane oligomer containing a structure represented by formula (I) (in formula (I), R represents a vinyl group; and * represents a bonding hand); (B) one or more compounds selected from among (i) maleic acid anhydride, (ii) a compound represented by formula (II) (in formula (II), RI represents a single bond or an alkanediyl group having from 1 to 6 carbon atoms; and R2 represents a hydrogen atom, a hydroxy group or a specific group represented by formula (II-1) or formula (II-2)), and (iii) a compound represented by formula (III) (in formula (III), R5 represents an alkanediyl group having from 1 to 6 carbon atoms); and (C) a radiation polymerization initiator.

Abstract: [Problem] To provide a radiation curable resin composition that is suitable as a primary material of an optical fiber and has a fast curing rate by irradiation with radiation. [Solution] A radiation polymerizable composition for forming a primary coating layer of an optical fiber, the radiation polymerizable composition comprising: (A) a urethane oligomer comprising a structure represented by formula (I) below: wherein R is a vinyl group and * is a bond; (B) one or more compounds of: (i) maleic anhydride, (ii) a compound represented by formula (II): wherein R1 is a single bond or an alkanediyl group comprising 1 to 6 carbon atoms, and R2 is a hydrogen atom, a hydroxy group, or a group represented by predetermined formula (II-1) or formula (II-2), or (iii) a compound represented by formula (III): wherein R5 is an alkanediyl group comprising 1 to 6 carbon atoms; and (C) a radiation polymerization initiator.

Abstract: There are provided a cubic boron nitride sintered body having a surface also excellent in adhesiveness to a ceramic coating film, while having excellent wear resistance and defect resistance, and a manufacturing method thereof, and a tool. The cubic boron nitride sintered body of the present invention includes 60.0 to 90.0% by volume of cubic boron nitride, the remainder being a binder phase, wherein the binder phase contains: at least any of a nitride, a boride, and an oxide of Al; at least any of a carbide, a nitride, a carbonitride, and a boride of Ti; and a compound represented by the following formula (1): W2NixCo(1-x)B2(0.40?x<1)??(1).

Abstract: There are provided a cubic boron nitride sintered body having a surface also excellent in adhesiveness to a ceramic coating film, while having excellent wear resistance and defect resistance, and a manufacturing method thereof, and a tool. The cubic boron nitride sintered body of the present invention includes 60.0 to 90.0% by volume of cubic boron nitride, the remainder being a binder phase, wherein the binder phase contains: at least any of a nitride, a boride, and an oxide of Al; at least any of a carbide, a nitride, a carbonitride, and a boride of Ti; and a compound represented by the following formula (1): W2NixCo(1-x)B2(0.

Abstract: The present invention provides methods for manufacturing neuraminic acid derivatives. [Means for solution] Methods for manufacturing compounds represented by the formula (I): [wherein R1 represents a C1-C19 alkyl group], or a pharmacologically acceptable salt thereof, using N-acetylneuraminic acid dihydrate as a starting raw material are provided.

Abstract: An object of the present invention is to provide an optically active bicyclic ?-amino acid derivative in a high purity.

Abstract: An object of the present invention is to provide an optically active bicyclic ?-amino acid derivative in a high purity.

Abstract: The present invention provides methods for manufacturing neuraminic acid derivatives. [Means for solution] Methods for manufacturing compounds represented by the formula (I): [wherein R1 represents a C1-C19 alkyl group], or a pharmacologically acceptable salt thereof, using N-acetylneuraminic acid dihydrate as a starting raw material are provided.

Abstract: In welding a component part (20) to a tank main body (10) of a plastic fuel tank of a laminated structure, an annular upright wall (15) is formed in a tank main body wall so as to define an opening therein. An end surface of a weldable layer of the component part is welded to an outer surface of a weldable layer of the tank main body surrounding the annular upright wall to form a first welded part (31) and to an end surface of the weldable layer of the tank main body exposed at the top surface of the annular upright wall to form a second welded part (32) while the HC barrier layers (12, 24) are kept substantially aligned with each other at the interface between the two parts. Thereby, the required HC permeation blocking property and an adequate welding strength can be achieved at the same time.

Abstract: In welding a component part (20) to a tank main body (10) of a plastic fuel tank of a laminated structure, an annular upright wall (15) is formed in a tank main body wall so as to define an opening therein. An end surface of a weldable layer of the component part is welded to an outer surface of a weldable layer of the tank main body surrounding the annular upright wall to form a first welded part (31) and to an end surface of the weldable layer of the tank main body exposed at the top surface of the annular upright wall to form a second welded part (32) while the HC barrier layers (12, 24) are kept substantially aligned with each other at the interface between the two parts. Thereby, the required HC permeation blocking property and an adequate welding strength can be achieved at the same time.