Abstract: A transistor comprising a first layer comprising a first material; a second layer comprising a second material applied directly onto the first layer, the first layer of the first material and the second layer of the second material forming a first heterojunction; a first 2-dimensional gas (2DEG) layer in the first layer adjacent the first heterojunction, a plane of the 2DEG layer being parallel to the first heterojunction; a source electrode and a drain electrode fixed on the second layer opposite the first layer; a nanogap between the source electrode and the drain electrode, the nanogap extending through the first layer and at least partially through the second layer beyond the plane of the 2DEG layer, the nanogap arranged perpendicular to the heterojunction; and one or more gates arranged adjacent the source electrode. The nanogap is between about 30-50 nm in width.

Abstract: The method comprises installing at least one lower section of a mooring line at the bottom of the body of water; trapping the lower section in the ground; connecting an upper unit of the floating installation to the mooring line. The lower section being constituted by a chain, the chain defining, after the connection of the upper unit, a lower end of the mooring line not provided with a mooring point pre-mounted on the mooring line, in particular an anchor or pile.

Abstract: The invention relates to a structure for transporting, installing, and dismantling a deck (1) of an off-shore exploitation rig, for installing, and dismantling this deck (1) on at least one supporting column, characterized in that it comprises two transport barges (20) and means (30) for supporting and raising the deck (1), temporarily connected to said deck and to said barges and configured to be supported by these barges for supporting said deck between said barges and a method for transporting, installing, and dismantling the deck (1) using the structure for transporting, installing, and dismantling the deck (1).

Abstract: A structure for transporting, installing and dismantling a deck (1) of an off-shore exploitation rig, for installing and dismantling this deck (1) on at least one supporting column. Two transport barges. Apparatus for supporting and raising the deck (1), independent of the deck on the one hand and independent of the barges on the other hand, and the apparatus able to be supported by the barges for supporting the deck between the barges.

Abstract: A complementary locking system for locking legs to the deck of a jack-up offshore drilling platform is disabled. The system includes at each leg, at least one assembly comprising plates forming two counter-racks that engage with a leg rack and, on one side of the plates, at least one internal element for connecting the internal edges of the plates, at least one external element for connecting the external edges of the plates and at least one intermediate member for connecting said at least one internal element to said at least one external element. Methods of installing said complementary locking system on the legs of a jack-up offshore drilling platform are also disclosed.

Abstract: The invention relates to a complementary locking system for locking legs to the deck of a jack-up offshore drilling platform. The inventive system comprises the following elements at each leg, namely: at least one assembly comprising plates forming two counter-racks which are intended to be engaged with a leg rack and, on one side of the plates, at least one internal element for connecting the internal edges of the plates, at least one external element for connecting the external edges of the plates and at least one intermediate member for connecting said at least one internal element to said at least one external element. The invention also relates to methods of installing said complementary locking system on the legs of a jack-up offshore drilling platform.