Zircaloy-4 is used as a fuel cladding material for water reactors, it has good mechanical properties, corrosion resistance, and low thermal neutron absorption cross section. However, the performance of can be reduced during service due to hydrogen uptake hydride formation. These hydrides are brittle, often reduce strength toughness materials well increase susceptibility delayed cracking (DHC). ...

The 3-dimensional structure of the plastid nucleoid was determined from serial sections of the plastid of dark-grown, greening, and light-grown cells of Ochromonas danica. In lightgrown and greening cells, the chloroplast nucleoid forms a continuous cord or ring which closely follows the rim of each lateral lobe of the chloroplast and is continuous across the top and bottom of the bridge connec...

structures known to mathematicians as connections in fibre bundles. The discovery of this equivalence has made it possible to understand why and how powerful mathematical concepts and structures are necessary and suitable for the description and explanation of physical reality. In a very important paper, Wu and Yang introduced the fundamental concept of nonintegrable—that is, path-dependent—pha...

the reaction of pbci, with 1,4,10,13-tetra-oxa-7, 16-diaza-cyclooctadecane (l= c h n o ) yielded colourless crystals of lpbci . the complex crystallizes in monoclinic space group, c2/c, a = 7.90(2), b = 14.75(3) and c = 17.36(3) ?= ? 101.75(3)?, z = 4 and r = 0.083 the coordination number around the lead atom is eight . [pb-n, 2.36(1), 2.70(4)], [pb-0,2.41(3)-2.57(3)], [pb-ci, 2.51(4), 2.57(4)].