Abstract: Porous groynes for land reclamation which includes a plurality of spaced stanchions and at least one screen grid means having a plurality of openings therein through which fluid and fluid conveyed solids may pass and wherein the screen grid means is formed of a self supporting high density polyethylene, polypropylene, polymers, co-polymers, polymer mixtures or laminates.

Abstract: A method and apparatus for land reclamation which includes utilizing groyne-like structures including spaced stanchions to which are mounted porous screens and wherein the screens are vertically adjustable as material is deposited during the reclamation process. In some embodiments the screens are carried by sleeves slidable on spaced stanchions and in other embodiments the screens may be sectional and carried by multiple sleeves.

Abstract: A method is used for interfacing dissimilar materials in an X-ray tube. The X-ray tube includes a rotor assembly to distribute heat generated in the X-ray tube. The X-ray tube is sealed within a glass material which has a first expansion coefficient. An interface is provided between the rotor assembly and the glass material to absorb temperature coefficient stresses. Preferably, the glass material is Borosilicate and the interface comprises a metal material and a ceramic material. The ceramic material has a second expansion coefficient that closely matches the first expansion coefficient. The metal material is preferably Kovar, and the ceramic material is preferably Mullite. Temperature coefficient stresses are then absorbed within the ceramic and metal structure.

Abstract: A NiAl intermetallic alloy and article is provided with improved high temperature strength, particularly stress rupture strength, through the generation of a multiphase microstructure comprising a beta matrix and at least one precipitate phase. The strength properties and microstructure are the result of alloying with at least two elements selected from Ga, Hf, and optionally Ti, Zr, Ta, Nb, and V, in defined ranges. Preferred are at least two of the elements Ga, Hf, and Ti, and specifically preferred are all three. A specifically preferred form of the invention, in atomic percent, is about 45-59% Ni, about 0.02-0.5% Ga, about 0.2 to less than 1% Hf, about 0.1-10% Ti, with the balance A1 and incidental impurities.