Abstract: An image generation device derives, for a subject including a specific structure, a subject model representing the subject by deriving each feature amount of the target image having the at least one representation format and combining the feature amounts based on the target image. A latent variable derivation unit derives a latent variable obtained by dimensionally compressing a feature of the subject model according to the target information based on the target information and the subject model. A virtual image derivation unit outputs a virtual image having the representation format represented by the target information based on the target information, the subject model, and the latent variable.

Abstract: Provided are a learning method and a learning system of a generative model, a program, a learned model, and a super resolution image generating device that can handle input data of any size and can suppress the amount of calculation at the time of image generation. A learning method according to an embodiment of the present disclosure is a learning method for performing machine learning of a generative model that estimates, from a first image, a second image including higher resolution image information than the first image, the method comprising using a generative adversarial network including a generator which is the generative model and a discriminator which is an identification model that identifies whether provided data is data of a correct image for learning or data derived from an output from the generator and implementing a self-attention mechanism only in a network of the discriminator among the generator and the discriminator.

Abstract: Provided is a method of producing an esterified cellulose ether having improved flowability of the powder, where the method can reduce production of fine powder in the precipitated esterified cellulose ether. The method is a method of producing hydroxypropyl methylcellulose acetate succinate powder which essentially includes an esterification reaction step, a precipitation step, a washing/recovering step and a drying step, wherein the precipitation step is a step of extruding the reaction solution, prepared in the esterification reaction step, into water from extruding ports of an extruder to form a precipitate, and then mincing the resultant precipitate to obtain a suspension containing hydroxypropyl methylcellulose acetate succinate particles.

Abstract: Provided is a method of producing hydroxypropyl methylcellulose acetate succinate powder capable of inhibiting aggregation of particles of the precipitated esterified cellulose ether and reducing produced amount of fine powder to thereby obtain the esterified cellulose ether in high yield. The method of producing hydroxypropyl methylcellulose acetate succinate powder comprises an esterification reaction step, a precipitation step, a washing/recovering step and a drying step, wherein the precipitation step is a step of introducing the reaction solution, obtained in the esterification reaction step, and water into a mixer provided with a rotatable rotor having blades and a perforated plate arranged to surround the rotor in a direction perpendicular to a radial direction of the rotor to allow a suspension, containing precipitated hydroxypropyl methylcellulose acetate succinate particles, to pass through the perforated plate to be discharged therethrough.

Abstract: Provided is a gelling composition capable of keeping a gel state in a food even when the food heated at 75° C. is cooled to around 45° C. at which the food can be eaten in a warm state. Specifically provided is a gelling composition comprising methyl cellulose, a 2.0% by weight aqueous solution of which has a storage modulus G? (75° C.) at 75° C. of 3,000 to 5,500 Pa, the 2.0% by weight aqueous solution of which has a return temperature storage modulus G? (75 to 45° C.) of 2,000 to 3,600 Pa when the temperature of the aqueous solution is returned from 75° C. to 45° C., and a 2.0% by weight aqueous solution of which has a viscosity at 20° C. of 3,000 to 10,000 mPa·s; a low temperature gelling agent; and a solvent. A food comprising the gelling composition is also provided.

Abstract: Provided is a method of continuously producing a depolymerized cellulose ether that is space-saving and highly productive, and is capable of reducing adhesion of a cellulose ether powder body to reactors and producing a depolymerized cellulose ether with a suppressed degree of yellowness and contaminants. The method includes: bringing a raw material cellulose ether that is of a temperature of 3° C. to less than 40° C. and is continuously supplied from a raw material tank 1 to a moisture conditioning tank 2 into contact with a water vapor B to obtain a moisture-conditioned cellulose ether; heating the moisture-conditioned cellulose ether to obtain a temperature-raised cellulose ether, continuously bringing a gaseous hydrogen chloride into contact with the temperature-raised cellulose ether to obtain a depolymerized cellulose ether product; and mixing the depolymerized cellulose ether product with a basic compound to obtain a depolymerized cellulose ether.

Abstract: There is provided a method for producing a depolymerized cellulose ether, the method suppressing the formation of coarse aggregates during the contact with an acid aqueous solution in a depolymerization reaction, and reducing the amounts of aggregates and black contaminants, while suppressing yellowness. More specifically, there is provided a method for producing a depolymerized cellulose ether, the method including a depolymerization step of depolymerizing a cellulose ether by bring the cellulose ether of 45 to 95° C. into contact with an acid aqueous solution of 55 to 98° C. to obtain a depolymerized cellulose ether.

Abstract: There is provided a method for producing a depolymerized cellulose ether having yellowness reduced. More specifically, there is provided a method for producing a depolymerized cellulose ether comprising a depolymerization step of depolymerizing a cellulose ether with an aqueous solution of acid in the presence of a polyhydric alcohol having 2 to 6 carbon atoms.

Abstract: There is provided a method for efficiently produce hydroxypropyl methyl cellulose acetate succinate (HPMCAS) having excellent flowability, where acetic acid in a reaction product mixture subjected to a wash and recovery step can be reduced. More specifically, there is provided a method for producing HPMCAS including an esterification step of esterifying hydroxypropyl methyl cellulose (HPMC) with acetic anhydride and succinic anhydride in acetic acid as a solvent to obtain a reaction product solution containing HPMCAS; a water addition step of adding water to the reaction product solution to obtain a water-added reaction product solution; an acetic acid removal step of removing at least a portion of both the solvent acetic acid and acetic acid derived from the acetic anhydride from the water-added reaction product solution to obtain a mixture having an acetic acid content reduced; and a wash and recovery step of washing the mixture and recovering the HPMCAS.

Abstract: There is provided a method for producing a hydroxyalkyl alkyl cellulose having a high storage modulus (thermal gel strength) and a small number of undissolved fibers. More specifically, there is provided a method for producing a hydroxyalkyl alkyl cellulose including steps of: bringing sheet-shaped pulp having a pore volume of 0.55 ml/g or more and less than 1.00 ml/g or chip-shaped pulp obtained by cutting the sheet-shaped pulp into contact with a first alkali metal hydroxide solution to obtain an alkali cellulose mixture, removing a liquid from the alkali cellulose mixture to obtain alkali cellulose, reacting the alkali cellulose with an alkylating agent and a hydroxyalkylating agent to obtain a first reaction mixture, mixing the first reaction mixture with a second alkali metal hydroxide solution to obtain a second reaction mixture, and purifying the second reaction mixture to obtain a hydroxyalkyl alkyl cellulose.

Abstract: There is provided a method for efficiently produce hydroxypropyl methyl cellulose acetate succinate (HPMCAS) having excellent flowability, where acetic acid in a reaction product mixture subjected to a wash and recovery step can be reduced. More specifically, there is provided a method for producing HPMCAS including an esterification step of esterifying hydroxypropyl methyl cellulose (HPMC) with acetic anhydride and succinic anhydride in acetic acid as a solvent to obtain a reaction product solution containing HPMCAS; a water addition step of adding water to the reaction product solution to obtain a water-added reaction product solution; an acetic acid removal step of removing at least a portion of both the solvent acetic acid and acetic acid derived from the acetic anhydride from the water-added reaction product solution to obtain a mixture having an acetic acid content reduced; and a wash and recovery step of washing the mixture and recovering the HPMCAS.

Abstract: There are provided a method for efficiently producing a water-soluble cellulose ether without using a special apparatus, and a novel water-soluble cellulose ether. More specifically, there are provided a method for producing a water-soluble cellulose ether including a first pulverization step of pulverizing a starting water-soluble cellulose ether to obtain a first pulverization product, and a first sieving step of sieving the first pulverization product by using a first sieve whose mesh surface is coated with an inorganic metal compound to obtain a first-sieve-passed water-soluble cellulose ether fraction; and a novel water-soluble cellulose ether.

Abstract: Molded solder includes first metal powder and second metal powder. The first metal powder has a first solidus temperature and a first liquidus temperature and includes an alloy containing metal elements. The second metal powder has a melting temperature or a second solidus temperature and a second liquidus temperature and includes single metal element or an alloy containing metal elements. The melting temperature and the second liquidus temperature are higher than the first liquidus temperature. The molded solder is so constructed that a mixture of the first metal powder and the second metal powder are press-molded. The molded solder is so constructed that a first solidus temperature of a solder becomes higher when the molded solder becomes the solder after the first metal powder has been melted by heating the molded solder at a temperature equal to or higher than the first liquidus temperature.

Abstract: There is provides a method for producing sieved low-substituted hydroxypropyl cellulose (L-HPC) at improved yield, while maintaining flowability and tablet properties. More specifically, there is provided a method for producing sieved L-HPC including a first sieving step of sieving L-HPC having a hydroxypropoxy group content of 5 to 16% by mass with a sieving shaker with horizontal movement of a sieve surface to obtain first sieve-residual L-HPC and first sieve-passed L-HPC, a second sieving step of sieving the first sieve-residual L-HPC with a sieving shaker with vertical movement of a sieve surface to obtain second sieve-residual L-HPC and second sieve-passed L-HPC, and a step of combining the first sieve-passed L-HPC and the second sieve-residual L-HPC to obtain the sieved L-HPC.

Abstract: A method for producing a cellulose ether having a high viscosity while keeping the same degree of polymerization as that in the production of a shaped pulp without changing a raw material or production facility. More specifically, provided is a method for producing a cellulose ether including steps of: cutting or pulverizing pulp to obtain sheet-like, chip-like, or powdery cellulose pulp, wherein the pulp is formed in a form of roll whose surface layer on at least one of the circumferential side and the ends is removed, or in a form of bale whose surface layer on at least one side is removed; bringing the obtained cellulose pulp into contact with an alkali metal hydroxide solution to obtain alkali cellulose; reacting the alkali cellulose with an alkylating agent to obtain a reaction product mixture; and subjecting the reaction product mixture to purification to obtain the cellulose ether.

Abstract: There is provided a method for producing hypromellose phthalate (HPMCP), the method not requiring any special device, and facilitating removal of impurities. More specifically, there is provided a method for producing HPMCP, including an esterification step of esterifying hypromellose with a carboxybenzoylating agent in the presence of an aliphatic carboxylic acid to obtain a reaction product solution containing HPMCP; a precipitation step of precipitating the HPMCP by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCP; a neutralization step of neutralizing the suspension with a basic substance to obtain a neutralized suspension; and a washing step of washing the HPMCP contained in the neutralized suspension to obtain the washed HPMCP.

Abstract: There is provided a method for producing hypromellose acetate succinate (HPMCAS), the method not requiring any special device and facilitating removal of impurities. More specifically, there is provided a method for producing HPMCAS, including an esterification step of esterifying hypromellose with an acetylating agent and a succinoylating agent in the presence of an aliphatic carboxylic acid to obtain a reaction product solution containing HPMCAS; a precipitation step of precipitating the HPMCAS by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCAS; a neutralization step of neutralizing the suspension with a basic substance to obtain a neutralized suspension; and a washing step of washing the HPMCAS contained in the neutralized suspension to obtain the washed HPMCAS.

Abstract: There is provided a method for producing a depolymerized cellulose ether, the method suppressing the formation of coarse aggregates during the contact with an acid aqueous solution in a depolymerization reaction, and reducing the amounts of aggregates and black contaminants, while suppressing yellowness. More specifically, there is provided a method for producing a depolymerized cellulose ether, the method including a depolymerization step of depolymerizing a cellulose ether by bring the cellulose ether of 45 to 95° C. into contact with an acid aqueous solution of 55 to 98° C. to obtain a depolymerized cellulose ether.

Abstract: There is provided a method for producing a depolymerized cellulose ether having yellowness reduced. More specifically, there is provided a method for producing a depolymerized cellulose ether comprising a depolymerization step of depolymerizing a cellulose ether with an aqueous solution of acid in the presence of a polyhydric alcohol having 2 to 6 carbon atoms.

Abstract: There is provided a method for efficiently produce hydroxypropyl methyl cellulose phthalate (HPMCP) having excellent flowability, where acetic acid in a reaction product mixture subjected to a wash and recovery step can be reduced. More specifically, there is provided a method for producing HPMCP including an esterification step of esterifying hydroxypropyl methyl cellulose (HPMC) with phthalic anhydride in acetic acid as a solvent to obtain a reaction product solution containing HPMCP; a water addition step of adding water to the reaction product solution to obtain a water-added reaction product solution; an acetic acid removal step of removing at least a portion of the acetic acid from the water-added reaction product solution to obtain a mixture having an acetic acid content reduced; and a wash and recovery step of washing the mixture and recovering the HPMCP.