Abstract: The present invention provides a method for manufacturing diamond, comprising electrolytically reducing carbon dioxide into diamond to obtain diamond in an electrolytic reduction apparatus having an anode, a cathode, and an electrolytic solution containing carbon dioxide, wherein the electrolytic solution comprises an ionic liquid.

Abstract: A resin composition contains a base resin including a polyolefin and an inorganic filler including silicon dioxide and surface-treated with a silane coupling agent. A remaining rate R of the inorganic filler in a fractured frozen surface is 50% or more. The remaining rate R is calculated using the following expression (1). R=(Df/Dc)×100 . . . (1). Df represents a density of the inorganic filler remaining in a fractured surface of a sheet formed of the resin composition containing the base resin and the inorganic filler, when the sheet is immersed in liquid nitrogen for 1 hour and then fractured. Dc represents a reference density of the inorganic filler detected in a cut surface of the sheet formed of the resin composition, when the sheet is cut at 24° C. using a focused ion beam without being frozen.

Abstract: A resin composition contains: a base resin including a polyolefin; a modified polyolefin obtained by grafting a polar group onto a polyolefin; and an inorganic filler including magnesium oxide and surface-treated with a silane coupling agent. A remaining rate R of the inorganic filler in a fractured frozen surface is 50% or more. The remaining rate R is calculated using the following expression (1). R=(Df/Dc)×100 . . . (1). Df represents a density of the inorganic filler remaining in a fractured surface of a sheet formed of the resin composition containing the base resin, the modified polyolefin, and the inorganic filler, when the sheet is immersed in liquid nitrogen for 1 hour and then fractured. Dc represents a reference density of the inorganic filler detected in a cut surface of the sheet formed of the resin composition, when the sheet is cut at 24° C. using a focused ion beam without being frozen.

Abstract: An oil pump includes: a shaft member; an inner rotor configured to rotate integrally with the shaft member; an outer rotor forming a rotor chamber into which oil is sucked from a suction passage and from which the oil is discharged toward a discharge passage, between the inner rotor and the outer rotor; a body member having a recess-shaped housing chamber in which each rotor is housed so as to be rotatable about an axis; and a cover member attached so as to close the housing chamber. The rotor chamber has first and second suction ports through each of which the oil to be sucked from the suction passage passes. The oil pump includes a straightening member branching the suction passage from a main path to the first suction port side and the second suction port side.

Abstract: An oil pump includes: a shaft member; an inner rotor configured to rotate integrally with the shaft member; an outer rotor forming a rotor chamber into which oil is sucked from a suction passage and from which the oil is discharged toward a discharge passage, between the inner rotor and the outer rotor; a body member having a recess-shaped housing chamber in which each rotor is housed so as to be rotatable about an axis; and a cover member attached so as to close the housing chamber. The rotor chamber has first and second suction ports through each of which the oil to be sucked from the suction passage passes. The oil pump includes a straightening member branching the suction passage from a main path to the first suction port side and the second suction port side.