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Abstract

A new tensile tester has been developed for use in the scanning electron microscope to deform a specimen of 100 mm length by a force as high as 5000 N during microscopic investigation. The tensile force is induced by the hydraulic loading system. The force and the elongation of the specimen are measured and controlled by a computer.

Uranium from the sea

“…They screened over 200 polymers and found onepoly(acrylamidoxime), a copolymer of carboxylate and amidoxime monomers -that was stable and selective enough to extract uranium at pH 8.3, although it also has a high affinity for other ions, in particular vanadium, which is present at much higher concentrations. 2 The amidoxime monomer acts as the ligand, binding uranyl ions and, although it is not clear why, the researchers found that the carboxylate monomer also seems to play a vital role in enabling the reaction.…”