Abstract: A head-mounted display device includes an image display unit (300a, 300b) configured to emit image light, a light guide member (100a, 100b) configured to guide the image light and emit the image light to eyes of a wearer who wears the head-mounted display device, and a relay optical system (201a, 201b) arranged between the image display unit and the light guide member, and configured to relay the image light from the image display unit to the light guide member, and form an intermediate image at least once before the image light enters the light guide member.

Abstract: A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA, a microbial cell containing a PUFA, and use of the microbial cell are provided. A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA including culture of a microorganism capable of producing arachidonic acid (ARA) and/or dihomo-gamma-linolenic acid (DGLA) is provided, the method including at least one of the following steps: (a) adding an organic acid in an amount of 0.01 to 5 w/v % to a culture medium after the beginning of main culture; (b) increasing the pH of the culture medium to a range effective for culture after the beginning of the main culture; and (c) adding a metal sulfate in an amount of 0.01 to 0.5 w/w % to the main culture medium.

Abstract: A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA, a microbial cell containing a PUFA, and use of the microbial cell are provided. A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA including culture of a microorganism capable of producing arachidonic acid (ARA) and/or dihomo-gamma-linolenic acid (DGLA) is provided, the method including at least one of the following steps: (a) adding an organic acid in an amount of 0.01 to 5 w/v % to a culture medium after the beginning of main culture; (b) increasing the pH of the culture medium to a range effective for culture after the beginning of the main culture; and (c) adding a metal sulfate in an amount of 0.01 to 0.5 w/w % to the main culture medium.

Abstract: A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA, a microbial cell containing a PUFA, and use of the microbial cell are provided. A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA including culture of a microorganism capable of producing arachidonic acid (ARA) and/or dihomo-gamma-linolenic acid (DGLA) is provided, the method including at least one of the following steps: (a) adding an organic acid in an amount of 0.01 to 5 w/v % to a culture medium after the beginning of main culture; (b) increasing the pH of the culture medium to a range effective for culture after the beginning of the main culture; and (c) adding a metal sulfate in an amount of 0.01 to 0.5 w/w % to the main culture medium.

Abstract: To provide a process and an apparatus by means of which a composition that contains episesamin in a concentration greater than 50 wt % on the basis of the sum weight of sesamin and episesamin can be produced conveniently and at high yield. There are provided a process and an apparatus which comprise the step of applying epimerization to sesamin or a sesamin-containing composition so that at least part of the sesamin is converted to episesamin and the step of selectively crystallizing episesamin by recrystallization and by means of which a composition that contains episesamin in a concentration greater than 50 wt % can be produced conveniently and at high yield.

Abstract: A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA, a microbial cell containing a PUFA, and use of the microbial cell are provided. A method for producing a polyunsaturated fatty acid (PUFA) or a lipid containing a PUFA including culture of a microorganism capable of producing arachidonic acid (ARA) and/or dihomo-gamma-linolenic acid (DGLA) is provided, the method including at least one of the following steps: (a) adding an organic acid in an amount of 0.01 to 5 w/v % to a culture medium after the beginning of main culture; (b) increasing the pH of the culture medium to a range effective for culture after the beginning of the main culture; and (c) adding a metal sulfate in an amount of 0.01 to 0.5 w/w % to the main culture medium.

Abstract: To provide a process and an apparatus by means of which a composition that contains episesamin in a concentration greater than 50 wt % on the basis of the sum weight of sesamin and episesamin can be produced conveniently and at high yield. There are provided a process and an apparatus which comprise the step of applying epimerization to sesamin or a sesamin-containing composition so that at least part of the sesamin is converted to episesamin and the step of selectively crystallizing episesamin by recrystallization and by means of which a composition that contains episesamin in a concentration greater than 50 wt % can be produced conveniently and at high yield.