Abstract: The disclosure concerns a fusible shutter for a water structure such as a river sill, or a spillway on a dam or on a protective dyke, including a solid element disposed on the top of the structure and held on top by gravity, forming a watertight or substantially watertight wall, installed on the water structure and being able to retract so as to allow water to pass without obstruction when the level of the reservoir or watercourse reaches a predefined level, a chamber being formed at the base of the solid element between the latter and the surface that supports it, pressurization means enabling the chamber to be filled with water in order to create under the solid element a thrust directed upwards when the water in the reservoir or watercourse reaches the predefined level.

Abstract: A series of ortheses for the treatment of scoliotic deformities are each adapted for obliquely applying dynamic derotational forces on the thorax and lumbar spine of the user in opposite directions combined with a kyphosing action on the thorax and a lordosing action on the lumbar spine. The orthoses are designed in order that the correcting forces can be applied on the user's trunk with various degree of mechanical force while allowing for complete or partial mobility of the trunk. The various orthoses can treat small, moderate and substantially severe deformities which are supple or rigid. A supple orthosis for small and supple curves comprises a thoracic garment encircling the upper thorax, short pants to provide a grip around the pelvic girdle and the upper thighs, and upper and lower semi-elastic straps having supple thoracic and lumbar pads, respectively, attached respectively to the garment and the pants.