A system for manufacturing radionuclide generators includes an enclosure defining a radioactive environment. The enclosure includes radiation shielding to prevent radiation within the radioactive environment from moving to an exterior of the enclosure. The system also includes a conveyance system having a forward track and first carriages positioned on and movable along the forward track for conveying racks in a first direction. The conveyance system also includes a first walking beam mechanism magnetically coupled to the first carriages to move the first carriages. The conveyance system further includes a return track and second carriages positioned on and movable along the return track for conveying racks in a second direction opposite the first direction. The forward track and the return track form a loop.

The invention relates to the naval field and in particular to a method for launching a structure (1) intended to float in water (15). This method comprises loading the structure (1) onto a pontoon (10) floating in the water, the bearing placement below the water (15) of at least one prop (2) connected to the structure (1) while the structure (1) rests on the pontoon (10) floating in the water (15), lowering the pontoon (10), with disengagement of the pontoon (10) vertically from the structure (1) and its subsequent removal while the structure (1) is supported by the at least one prop (2) bearing below the water (15), and lowering the structure (1), which is still supported by the at least one prop (2), until the structure (1) floats in the water (15).

The present invention overcomes the disadvantages of the prior art by providing a pneumatic lift apparatus for a ladder. The apparatus is attachable to a conventional extendable ladder. The apparatus attaches to the lower end of the ladder and includes attachments for attaching the side rails of the ladder. A plate is attached in weight bearing relation between opposing pneumatic pistons which serve to lift the plate relative to the rails.

The invention provides a tool for moving a drivetrain component in a nacelle of a horizontal axis wind turbine, the nacelle comprising a nacelle structure, the component being connected, in operation of the wind turbine, to a rotor of the wind turbine, the tool comprising at least drive unit for moving the component in relation to the nacelle in a direction parallel to the rotational axis of the rotor, and a plurality of position adjustment devices adapted to be located between the nacelle structure and the component, and distributed so that rotational movement of the component can be provided by coordinated control of the position adjustment devices.

Determining an active jacking force of a tunneling closely undercrossing existing station, includes: acquiring design parameters of stations, and geological parameters of a construction site; obtaining a stress solution expression of the active jacking force on the existing station to obtain a stress solution of any point in a semi-infinite space under the action of a vertical load, replacing the vertical load with a vertical load acting on the existing station, and obtain a vertical stress solution of the existing station; obtaining a relational expression between the deflection and the stress solution of the existing station; and substituting the stress solution expression of the active jacking force into the relational expression between the deflection and the stress solution of the existing station according to boundary conditions at both ends of a beam on elastic foundation to obtain the active jacking force that controls the deflection of the existing station.

Determining an active jacking force of a tunneling closely undercrossing existing station, includes: acquiring design parameters of stations, and geological parameters of a construction site; obtaining a stress solution expression of the active jacking force on the existing station to obtain a stress solution of any point in a semi-infinite space under the action of a vertical load, replacing the vertical load with a vertical load acting on the existing station, and obtain a vertical stress solution of the existing station; obtaining a relational expression between the deflection and the stress solution of the existing station; and substituting the stress solution expression of the active jacking force into the relational expression between the deflection and the stress solution of the existing station according to boundary conditions at both ends of a beam on elastic foundation to obtain the active jacking force that controls the deflection of the existing station.

A device is mounted to the end of a log so that a skid steer may use the log to engage a tree targeted for felling. The device includes implements configured for engaging the target tree to be felled to give the operator of the device control over the target tree. The device is structured to push the target tree over such that the root ball of the target tree rises up out of the ground as the target tree is felled and/or to allow the operator to make cuts to the target tree before the device is use to push the tree in the desired direction of fell.

A precision shaft alignment system for establishing precise concentric axial alignment of a first shaft rotatably mounted and extending from a fixed unit and a second shaft extending from a variable position unit towards the first shaft includes a control and computing interface module, a pair of measuring means for precisely measuring at least one position of the first shaft and the second shaft and a jacking system for precisely aligning the shafts. The pair of measuring means is in communication with the control and computing interface module for transferring the at least one position of the first shaft and the second shaft for establishing precise concentric axial alignment of the first shaft and the second shaft. The jacking system is controlled by the control and computing interface module for precisely aligning the shaft.

The invention relates to a hydraulic rescue device (1) for manual operation by one rescuer. The rescue device (1) comprises a hydraulic cylinder (5) comprising a cylinder tube (6) and at least one piston rod (7, 7) that can be adjusted relative to the cylinder tube (6), at least one first support surface (17) formed on the cylinder tube (6) for supporting the rescue device (1) in a load-transferring manner on first object surfaces that can be freely selected by a rescuer, at least one second support surface (19) for supporting the rescue device (1) in a load bearing manner on second object surfaces that can be freely selected by a rescuer, and at least one manually operable control valve (14). At least one or more markings (23, 23) are provided on the casing surface (22, 22) of the at least one piston rod (7, 7), which at least one marking (23, 23) is provided at least to signal a remaining stroke (24) that is still available and/or an adjusting stroke (25) already travelled of the at least one piston rod (7, 7) relative to the cylinder tube (6).