Abstract: A nacelle for a wind turbine includes a nacelle roof and a first wind turbine component, wherein the nacelle roof is configured to cover the first wind turbine component, the nacelle roof including a first sliding section and a second sliding section, wherein the first sliding section and/or the second sliding section is configured to slide over at least a part of the surface of the nacelle roof, wherein the first sliding section and the second sliding section are moveable between a closed position, in which the first wind turbine component is covered by the nacelle roof, and an opened position, resulting in an opening of the nacelle roof through which the first wind turbine component is hoisted.

Abstract: A pool stroke training tool comprising: an elongated body, where said elongated body extends between a first end and a second end; a base along a bottom portion of said elongated body, where said base is wider than an upper portion of said elongated body; a spacer attached above said elongated body, where said spacer extends the length of said elongated body; and a slide bar attached at top of the spacer. In one particular embodiment, the pool stroke-training tool may include indentations along the length of the elongated body and along the base. Felt may be used as a cover for the slide bar. In another exemplary embodiment, the slide bar includes a first rise at a first height and a second rise at a second height.

Abstract: A photovoltaic system includes a first submodule and a second submodule connected in parallel.

Abstract: Eggs are loaded on a tray in rows and columns and conveyed to a candling station having a plurality of candling locations, each location for candling a portion of eggs on a tray, a different tray at each location. Different rows of eggs of a tray are candled in the different locations so that all eggs of each tray are candled by all of the locations. Each location has a plurality of digital video cameras, each camera focused on a portion of eggs in a row, the eggs being imaged being located in one or more rows. The eggs of each row being imaged are lifted by an associate lifting assembly which selectively rotates the egg for imaging in two opposite imaging orientations by each camera.