Abstract: In a firing condition determination step S101a, as firing conditions for firing a refractory, an Fe2O3 amount (mass %) which is an Fe2O3 content, a target firing temperature T (° C.) to which the temperature of the refractory is raised when the refractory is fired and a continuous firing time t (hr) during which the firing is continued at the target firing temperature T are determined. The Fe2O3 amount, the target firing temperature T and the continuous firing time t are determined so as to satisfy all five formulas of 1.2<Fe2O3 amount ?2.5, 1250?T?1450, 0?t, P=0.0101×T+0.0913×t?12.3 and P>0.992×Fe2O3 amount+0.080.

Abstract: A probe holder (38) that has: a housing part (40) that houses one part of a probe head (34) of an ultrasonic probe; and a belt (42) that, along with the housing part, binds the probe head from the outside. As a result of the belt (42) being fastened and binding the probe head (34), it becomes difficult for the probe head (34) to come out of the probe holder (38), and the probe head (34) is securely held.

Abstract: An ultrasonic diagnostic device (10) has a probe holder (38) that is mounted on a side surface of a device main body (12). The probe holder (38) holds a probe head (34) of an ultrasonic probe. The probe holder (38) can rotate around an axis line that extends in the left-right direction and can be stopped in a desired position. The orientation, with respect to the device main body (12), of the probe head that is held by the probe holder (38) can be altered.

Abstract: In a transportable ultrasound diagnostic apparatus, a body to which a display unit on which an ultrasound image is displayed is integrated and an operation panel are connected by a connecting member. The body and the operation panel are supported by a body supporting stub and an operation panel supporting stub, which are separate supporting stubs, on the connecting member in a pivotable manner around center axes of the supporting stubs. The ultrasound diagnostic apparatus is used in an open state in which the operation panel is pulled down to the front side. The operation panel is pivoted to close with the body, resulting in a storage state.

Abstract: In a transportable ultrasound diagnostic apparatus, a body to which a display unit on which an ultrasound image is displayed is integrated and an operation panel are connected by a connecting member. The body and the operation panel are supported by a body supporting stub and an operation panel supporting stub, which are separate supporting stubs, on the connecting member in a pivotable manner around center axes of the supporting stubs. The ultrasound diagnostic apparatus is used in an open state in which the operation panel is pulled down to the front side. The operation panel is pivoted to close with the body, resulting in a storage state.