摘要:
A method for modifying a PMMA surface by the gamma-irradiation induced polymerization thereon of N-vinylpyrrolidone, 2-hydroxyethylmethacrylate or a mixture thereof while maintaining the following conditions:(a) monomer concentration in the range of from about 0.5% to about 50%, by weight;(b) total gamma dose in the range of from about 0.01 to less than about 0.50 Mrad;(c) gamma dose rate in the range of from about 10 to about 2500 rads/minute; and(d) maintaining the molecular weight of the polymer in solution in the range of from about 250,000 to about 5,000,000.The invention also relates to modifying polypropylene, polyvinylidene fluoride, polycarbonate and silicon surfaces according to a similar method as well as materials produced by the above methods which are useful as ocular implants.
摘要:
A fiber pad having a core non-woven layer is disclosed. The core layer can have an upper surface and a lower surface. The core layer can comprise at least one fiber layer. The at least one fiber layer can comprise a plurality of parallel fibers. Selected groups of the parallel fibers can be folded into desired pleated configurations. Optionally, the core layer can comprise post-consumer carpet materials.
摘要:
A fiber pad having a core non-woven layer is disclosed. The core layer can have an upper surface and a lower surface. The core layer can comprise at least one fiber layer. The at least one fiber layer can comprise a plurality of parallel fibers. Selected groups of the parallel fibers can be folded into desired pleated configurations. Optionally, the core layer can comprise post-consumer carpet materials.
摘要:
A gate lifting apparatus for retrofitting a sagging gate including a first cylindrical segment having a first diameter and a second cylindrical segment having a second diameter that is larger than the first diameter. The second cylindrical segment has a first end and a second end, wherein the first end of the second cylindrical segment abuts the first cylindrical segment. The second cylindrical segment is cylindrically hollow and the second end of the second segment exposes a cylindrical cavity formed by it being hollow. The cylindrical cavity of the second cylindrical segment is configured to form a mating engagement with typical a gate hinge pin such that the first cylindrical segment then operatively serves as the new pin in a gate hinge assembly to vertically raise the position of the pin and, thus, raise the gate.