Abstract: The cross-sectional shape of a flow passage 31 is circular in a first portion 3; the shape of a flow passage 51 is a flat shape in a second portion 5; in a connecting portion 4, the shape of a flow passage 41 is a shape continuously connecting the flow passage 31 of the first portion 3 and the flow passage 51 of the second portion 5; an opening 52 is provided on the distal end side of the second portion 5 and extends along a plane direction of the flat shape; and assuming that a maximum value of a cross-sectional area of the flow passage 31 in the first portion 3 is given by S1, that a maximum value of a cross-sectional area of the flow passage 51 in the second portion 5 is given by S2, and that a minimum value of a cross-sectional area of the flow passage 31 within a range of 20% of a length L1 of the first portion 3 from a boundary portion 42 between the first portion 3 and the connecting portion 4 toward the upstream side is given by S3, S2 is greater than S1, the ratio S1/S3 between S1 and S3 is 1.

Abstract: A submerged entry nozzle includes a bottomed cylinder having a vertical side face with at least two outlet ports and having an inner side and an outer side. The outlet port satisfies the following expressions: Vi/Vo?1.1??Expression (l) Ho/Hi?1.1??Expression (2) where Vi indicates a vertical opening dimension of each of the at least two outlet ports on the inner side, Hi indicates a horizontal opening dimension of each of the at least two outlet ports on the inner side, Vo indicates a vertical opening dimension of each of the at least two outlet ports on the outer side, and Ho indicates a horizontal opening dimension of each of the at least two outlet ports on the outer side.

Abstract: The cross-sectional shape of a flow passage 31 is circular in a first portion 3; the shape of a flow passage 51 is a flat shape in a second portion 5; in a connecting portion 4, the shape of a flow passage 41 is a shape continuously connecting the flow passage 31 of the first portion 3 and the flow passage 51 of the second portion 5; an opening 52 is provided on the distal end side of the second portion 5 and extends along a plane direction of the flat shape; and assuming that a maximum value of a cross-sectional area of the flow passage 31 in the first portion 3 is given by S1, that a maximum value of a cross-sectional area of the flow passage 51 in the second portion 5 is given by S2, and that a minimum value of a cross-sectional area of the flow passage 31 within a range of 20% of a length L1 of the first portion 3 from a boundary portion 42 between the first portion 3 and the connecting portion 4 toward the upstream side is given by S3, S2 is greater than S1, the ratio S1/S3 between S1 and S3 is 1.

Abstract: A submerged entry nozzle includes a bottomed cylinder having a vertical side face with at least two outlet ports and having an inner side and an outer side. The outlet port satisfies the following expressions: Vi/Vo?1.1??Expression (l) Ho/Hi?1.1??Expression (2) where Vi indicates a vertical opening dimension of each of the at least two outlet ports on the inner side, Hi indicates a horizontal opening dimension of each of the at least two outlet ports on the inner side, Vo indicates a vertical opening dimension of each of the at least two outlet ports on the outer side, and Ho indicates a horizontal opening dimension of each of the at least two outlet ports on the outer side.

Abstract: In a display system, a remote control has a first signal production component for producing a first image switching signal, which is a command signal to switch between first image data, which includes confidential information and second image data, which is non-confidential information, in response to a manipulation component being manipulated by a specific user. A display device has a first image switching component that directs switching between the first image data and the second image data displayed on the display device, according to the first image switching signal received from the remote control. When the first image switching signal is inputted, the first image switching component executes first image switching control in which the first image data displayed on the display device is switched to the second image data and the second image data displayed on the display device is switched to the first image data.