Abstract: Structured surfaces are described. In one embodiment, the structured surface comprises a plurality of structures having a complement cumulative slope magnitude distribution (Fcc) such that at least 30, 40, 50, 60, 70, 80 or 90% of structures have a slope greater than 10 degrees; and less than 80% of the structures have a slope greater than 35 degrees. In other embodiments, the structures comprise peaks and valleys defined by a Cartesian coordinate system such that the peaks and valleys have a width and length in the x-y plane and a height in the z-direction and at least a portion of the peaks and/or valleys vary in height in the y direction and/or the x-direction by at least 10% of the average height. Articles and methods are also described.

Abstract: A recycling method that can be used by an OEM products company or other entity to obtain recovered raw materials for use in its manufacturing operations in a manner that helps ensure the quality and traceability of the recovered raw materials. The process involves first collecting the material from one or more sources, then determining suitability of the material for processing using a series of qualifying tests separated into a two-phase review, wherein each of the qualifying tests is carried out using a composition profile for the material. The first phase of the review utilizes a source composition profile that describes salient features of the material so that it can be reviewed for suitability for processing and end uses as well as for regulatory compliance. The second phase involves similar reviews based on an analytical composition profile that is determined by physical analysis of the material.

Abstract: A hydrojet turbine drive 10 is described with a first turbine assembly 40 including a first compressor rotor 46 with blades 48 having a water pitch for drawing water into the turbine drive 10. The water is driven against the walls of a housing 18 and into a first stator 56 resulting in a portion of the water breaking down into its gaseous components. The water-gas fluid is reoriented and directed by the first stator 56 into a second turbine assembly 42 including a second compressor rotor 68 the blades 72 of which define a gas pitch. The circular flow therefrom is forced into a second stator 70 whereat additional water is reduced to its gaseous components. The water-gas fluid is directed by the second stator 70 into a third turbine assembly 44 including a third compressor rotor 88 the blades 94 of which also have a gas profile.

Abstract: A pre-stressed impact testing device designed to measure the energy which is absorbed during fracture of metal samples under pre-stressed conditions. The device includes a base portion and a pendulum supporting portion which is positioned thereabove. The base portion includes first and second elongated and horizontally spaced-apart beams having opposite ends with a third beam secured to and extending between the first and second beams at one end thereof. A hydraulic ram is secured to and extends between the other ends of the first and second beams for selectively moving the other ends of the first and second beams away from each other so that the first and second beams will be elastically stressed. Connectors are provided on each of the first and second beams for attachment to the opposite ends of the sample material whereby the sample material will be placed in stress when the first and second beams are elastically stressed.