Abstract: A powder storage apparatus 41 includes: a container 42 having a powder inlet 18A, a powder outlet 10A, and a gas outlet 18B; and a tube 70 connected to the powder inlet 18A. If AS [m2] is a cross-sectional area of a cross section perpendicular to an axis of the tube 70 at a bottom end 70b of the tube 70 and AB [m2] is a cross-sectional area of the gas outlet 18B, the following expression is satisfied. AS/AB<4.

Abstract: A powder storage apparatus 41 includes: a container 42 having a powder inlet 18A, a powder outlet 10A, and a gas outlet 18B; and a tube 70 connected to the powder inlet 18A. If AS [m2] is a cross-sectional area of a cross section perpendicular to an axis of the tube 70 at a bottom end 70b of the tube 70 and AB [m2] is a cross-sectional area of the gas outlet 18B, the following expression is satisfied. AS/AB<4.

Abstract: To enable highly efficient production of an olefin with a low environmental impact. The production includes a thermal cracking step of thermal cracking plastic to obtain a thermally cracked gas (G1) and a catalytic cracking step of cracking the thermally cracked gas (G1) in the presence of a catalyst to obtain a catalytically cracked gas (G2). When a ratio of an olefin to paraffin in the thermally cracked gas (G1) is indicated as R1 and a ratio of an olefin to paraffin in the catalytically cracked gas (G2) is indicated as R2, the following formula is satisfied: R2/R1 ?1.

Abstract: A powder supply method for causing a powder supplied from a top end 70t of a tube 70 to flow down within the tube 70 and be discharged from a bottom end 70b of the tube, in which if M [kg/s] is a supply flow rate of the powder and AS [m2] is a cross-sectional area of the bottom end 70b of the tube 70, the following expression is satisfied. 1.

Abstract: A powder storage apparatus 41 includes: a container 42 having a powder inlet 18A, a powder outlet 10A, and a gas outlet 18B; and a tube 70 connected to the powder inlet 18A. If AS [m2] is a cross-sectional area of a cross section perpendicular to an axis of the tube 70 at a bottom end 70b of the tube 70 and AB [m2] is a cross-sectional area of the gas outlet 18B, the following expression is satisfied.

Abstract: A method for preventing burn-in conditions on a display of an electronic device is disclosed. The electronic device acquires a position of, for example, a task bar being displayed on an OELD screen, extracts a color of a pixel located adjacent to the task bar, and generates an overlay window of a color based on the extracted color. The color of the overlay window is translucent and continuously changes from the extracted color to black with an increase of the distance from the pixel located adjacent to the task bar. The task bar is displayed on the OELD screen with the overlay window overlaying the task bar.

Abstract: A control unit of an information processing apparatus extracts an address string of memory access generated in a processor executing a program in an arbitrary computer, divides the address string into a plurality of sections. And the control unit searches an address pattern accessible by an address generator that converts a command to be input into an address string including a plurality of address block numbers by a predetermined algorithm for the each divided section.