Abstract: An etching composition that includes a quaternary ammonium salt having 8 or more carbon atoms and selectively dissolves silicon over silicon germanium, and may further include a chelating agent, an etching method comprising etching a structure that contains silicon and silicon germanium by using the etching composition, a method for manufacturing a semiconductor device, and a method for manufacturing a gate-all-around-type transistor using the etching composition.

Abstract: A prepreg containing a matrix resin containing: a polyetherimide resin (A) having a repeating unit represented by General Formula (A); and carbon fibers, in which the matrix resin satisfies Condition (1). Condition (1): A tensile elongation at break (T1) of a film, obtained by extrusion-molding the matrix resin into a film shape, in a TD direction, and a tensile elongation at break (T2) of the film in the TD direction after immersing of the film for 1,000 hours in a specific oil at 23° C. are measured, and a tensile elongation retention rate obtained by Expression (1) is 15% or greater and 90% or less. Tensile Elongation Retention Rate=(Tensile Elongation at Break (T2)/Tensile Elongation at Break (T1))×100 . . . (1) (in Formula (a), m is a number of 5 to 1,500.

Abstract: An object of the present invention is to provide a sound insulating sheet member that has high sound-insulating performance which exceeds mass law while being relatively light weight, that is highly flexible in design, excellent in versatility, and easy to manufacture so that productivity and economic efficiency can be improved, and a sound insulating structural body or the like using the same. The object thereof is achieved by using a sound insulating sheet member comprising at least a sheet having rubber elasticity and a plurality of resonant portions, wherein the resonant portions are provided in contact with a sheet surface of the sheet, each of the resonant portions including a base part and a weight part, and the weight part being supported by the base part and having a larger mass than the base part.

Abstract: An ethylene-vinyl alcohol copolymer composition that contains an ethylene-vinyl alcohol copolymer (A), an unmodified polyolefin (B), and an acid-modified polyolefin (C). The mass ratio [(B)/(C)] between the unmodified polyolefin (B) and the acid-modified polyolefin (C) is 75/25 to 1/99. The melt viscosity ratio [(?1)/(?2)] between the melt viscosity (?1) of the composition at 210° C. and a shear rate of 18 (sec-1) and the melt viscosity (?2) of the composition at 210° C. and a shear rate of 365 (sec-1) is 5.6 or more. The mass ratio [(A)/((B)+(C))] between the ethylene-vinyl alcohol copolymer (A) and the total content of the unmodified polyolefin (B) and the acid-modified polyolefin (C) is 60/40 or more and less than 75/25.

Abstract: A film-like graphite that satisfies the following condition (1) or condition (2) described below. Condition (1): a graphite crystal orientation degree P is 96% or more with respect to a film plane. Condition (2): a graphite crystal orientation degree P is 94% or more with respect to a film plane and a thickness is 42 ?m or more.

Abstract: A conductive C-plane GaN substrate has a resistivity of 2×10?2 ?·cm or less or an n-type carrier concentration of 1×1018 cm?3 or more at room temperature. At least one virtual line segment with a length of 40 mm can be drawn at least on one main surface of the substrate. The line segment satisfies at least one of the following conditions (A1) and (B1): (A1) when an XRC of (004) reflection is measured at 1 mm intervals on the line segment, a maximum value of XRC-FWHMs across all measurement points is less than 30 arcsec; and (B1) when an XRC of the (004) reflection is measured at 1 mm intervals on the line segment, a difference between maximum and minimum values of XRC peak angles across all the measurement points is less than 0.2°.

Abstract: A method for producing a carbon material may include: granulating a raw carbon material by applying mechanical energy comprising impact, compression, friction, and/or shear force. The granulating may be carried out in the presence of a granulating agent. The granulating agent may be liquid during the granulating of the raw carbon material. Alternatively or in addition, the granulating agent may include no organic solvent, an organic solvent having no flash point, or no organic solvent having a flash point of 5° C. or higher.

Abstract: A polyester resin containing a constitutional unit derived from at least one of a polyhydric alcohol derived from biomass and a polyvalent carboxylic acid derived from biomass, and a constitutional unit derived from polyethylene terephthalate, in which a ratio of carbon atoms derived from the polyethylene terephthalate is 5% to 40% with respect to 100% of all carbon atoms, and a methyl ethyl ketone insoluble matter is 5% by mass or less.

Abstract: A method for producing bisphenol A (BPA) is provided. The method includes step A of degrading a polycarbonate resin in a solvent and distilling off the solvent to obtain a crude solution A; step B of subjecting acetone and phenol to dehydration condensation; step C of distilling off unreacted acetone and water to obtain a concentrated liquid C; step D of crystallizing the concentrated liquid C to obtain a slurry liquid, from which a mother liquor D is obtained; step H of obtaining a solution H1 or a solution H2 from the crude solution A and part of the mother liquor D; and step I of supplying the solution H1 or H2 to the step B or C. The solution H1 contains BPA obtained by degrading BPA contained in the crude solution A and the mother liquor D into phenol and isopropenylphenol and then rebonding phenol and isopropenylphenol, and the solution H2 contains phenol obtained by degrading BPA contained in the crude solution A and the mother liquor D into phenol and acetone.

Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.28, the molar ratio of Ni/(Ni+Mn+Co) is 0.45 or more, the plate density of the positive electrode is 3.3 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.

Abstract: The present invention relates to a laminate including a protection layer, a barrier layer, and a heat sealing layer, in which a product of a tensile elastic modulus A in a reference direction, a tensile elastic modulus B in a direction forming an angle of 45° with respect to the reference direction, and a tensile elastic modulus C in a direction forming an angle of 90° with respect to the reference direction is 0.22 (GPa)3 or less, and a value of the tensile elastic modulus B to the tensile elastic modulus A, a value of the tensile elastic modulus C to the tensile elastic modulus A, and a value of the tensile elastic modulus C to the tensile elastic modulus B are each 0.1 to 10.

Abstract: A water-soluble polyvinyl alcohol film mainly containing a polyvinyl alcohol resin (A), wherein the polyvinyl alcohol resin (A) includes: a polyvinyl alcohol resin (a1) having a 4 mass % aqueous solution viscosity of not lower than 21 mPa·s at 20° C. as a main component of the polyvinyl alcohol resin (A); and a polyvinyl alcohol (a2) resin satisfying the following requirements (?) and (?) with respect to the polyvinyl alcohol resin (a1): (?) the polyvinyl alcohol resin (a2) has a 4 mass % aqueous solution viscosity that is higher than the 4 mass % aqueous solution viscosity of the polyvinyl alcohol resin (a1) as measured at 20° C., and (?) a difference in average saponification degree between the polyvinyl alcohol resin (a1) and the polyvinyl alcohol resin (a2) is not greater than 5 mol % in absolute value.

Abstract: The present invention relates to a resin composition containing a polycarbonate resin (A) and a polymer (B), in which the polymer (B) is a copolymer containing a polymer chain (B1) and a polymer chain (B2); the polymer chain (B1) has a glass transition temperature (Tg) of higher than 80° C.; the polymer chain (B2) has a glass transition temperature (Tg) of lower than 0° C.; and a refractive index difference between the polycarbonate resin (A) and the polymer chain (B2) is less than 0.026.

Abstract: Provided is a battery pack in which cells and a separation member that separates the cells are stacked, wherein the separation member has a heat insulating portion, a compression modulus of the heat insulating portion in stacking direction is 0.5 to 10 MPa, and the separation member has a noncontact region in which the heat insulating portion is not in contact with the cells. A battery pack in which contact between adjacent cells due to expansion of cells is prevented and the safety of the battery pack can be maintained can be provided.

Abstract: The present invention relates to a modified (mutant) nicotinamide phosphoribosyltransferase, and a method for producing nicotinamide mononucleotide using the same. The modified nicotinamide phosphoribosyltransferase (Nampt) of the present invention comprises the amino acid sequence represented by the following SEQ ID NO: 1 and/or the amino acid sequence represented by the following SEQ ID NO: 2, and has improved activity as compared with wild-type Nampt: (a) SEQ ID NO: 1: S- [V/I] -P-A-X1-X2-H-S-[T/V/I] - [M/V/I] -X3, and (b) SEQ ID NO: 2: X4-[S/I] -D-X5 wherein X1 to X5 are as defined herein.

Abstract: Disclosed herein is a non-aqueous electrolyte secondary battery containing at least a positive electrode capable of the absorbing and releasing of a lithium ion, a negative electrode capable of the absorbing and releasing of the lithium ion, and a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, where the negative electrode contains a carbonaceous material, and the non-aqueous electrolyte solution contains, in addition to an electrolyte and a non-aqueous solvent: (A) a compound having at least two isocyanate groups per molecule, (B) a monofluorophosphate salt or a difluorophosphate salt, at from 0.001 mass % or more to 5 mass % or less in the non-aqueous electrolyte solution.

Abstract: The present invention provides with an electron-accepting compound having a structure of the following formula (1):

Abstract: A prepreg sheet includes a plurality of prepreg tapes each of which overlaps with a corresponding adjacent prepreg tape for a suitable overlapping length. The plurality of prepreg tapes each contain a reinforcing fiber bundle that is impregnated with a thermosetting resin composition. According to a method for manufacturing a preform, for example, a primary premolded article is manufactured by preforming an intermediate base material containing a reinforcing fiber base material and a matrix resin composition, and a secondary premolded article is manufactured by preforming the primary premolded article on which the intermediate base material is further placed.

Abstract: An object of the present invention is to provide an epoxy resin, an epoxy resin-containing composition, and a cured product which are excellent in flexibility. The present invention relates to an epoxy resin, which is a reaction product of an epoxy compound (A) and an acid-terminated polyester (B). In addition, the present invention relates to an epoxy resin-containing composition and a cured product obtained by using the epoxy resin.

Abstract: A sizing agent for carbon fiber includes component (A), component (B), and component (C), in which the component (A) is at least one selected from the group consisting of component (A-1), component (A-2), and component (A-3); the component (A-1) is a urethane compound having a structure of Formula (1-1) in the molecule, the component (A-2) is an ester compound having a structure represented by Formula (1-2) in the molecule, the component (A-3) is an amide compound having a structure of Formula (1-3) in the molecule; the component (B) is an epoxy compound selected from the group consisting of an epoxy compound represented by Formula (2), an epoxy compound represented by Formula (3), and an epoxy compound represented by Formula (4); and the component (C) is a bisphenol type epoxy compound.