Abstract: A solid titanium catalyst component (I) for olefin polymer production contains titanium, magnesium, halogen, and a cyclic multiple-ester-group-containing compound (a) represented by the formula (1). Preferably, a propylene polymer that is obtained by the olefin polymerization method and has specific thermal properties as determined primarily by differential scanning calorimetry (DSC).

Abstract: The solid titanium catalyst component (I) of the present invention contains titanium, magnesium, halogen, and a cyclic multiple-ester-group-containing compound (a) represented by the following formula (1).

Abstract: [Problem] To provide an internal donor component capable of producing, with high productivity, a propylene polymer having extremely high stereoregularity when used mainly as a solid titanium catalyst component. [Solution] A polyol ester compound having a specific polycyclic structure represented by formula (1). This ester compound is characterized in that sites including a C-R3 structure and a C-R4 structure satisfy a specific relationship.

Abstract: A control device of a vehicle, the vehicle having: a power source including an engine and an electric motor; and a power transmission shaft to which the power source is coupled in a power transmittable manner; the vehicle comprising: a power transmission device transmitting a torque of the power source input to the power transmission shaft, to driving wheels; and an electric-power accumulator supplying/receiving electric power to/from the electric motor, the control device comprising: a power source control unit performing charge control for increasing a torque of the engine that achieves a drive demand amount during running of the vehicle in a driving state; and a charge limit control unit performing charge limit control for limiting a charging power in the charge control.

Abstract: The present invention provides a method for producing an exosome, comprising a step of applying a cell to a cell culture module to culture the cell and a step of producing an exosome by the cell, wherein the cell culture module is provided with a polymer porous film and a casing having at least two culture medium in-flow/out-flow ports and having the polymer porous film placed therein.