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The endoskeletal structure of the Sea Urchin, Centrostephanus rodgersii, has numerous long spines whose known functions include locomotion, sensing, and protection against predators. These spines have a remarkable internal microstructure and are made of single-crystal calcite. A finite-element model of the spine's unique porous structure, based on(More)
BACKGROUND Internal fixation of femoral fractures requires drilling holes through the cortical bone of the shaft of the femur. Intramedullary suction reduces the fat emboli produced by reaming and nailing femoral fractures but requires four suction portals to be drilled into the femoral shaft. This work investigated the effect of these additional holes on(More)
This paper presents the tensile deformation behavior of Zr 41.25 Ti 13.75 Ni 10 Cu 12.5 Be 22.5 bulk metallic glass in supercooled liquid region. Isothermal tensile tests are carried out at four characteristic temperatures of 616K, 636K, 656K and 676K which are in the range from glass transition onset temperature to crystallization temperature. The results(More)
The structural evolution of a Zr64.13Cu15.75Ni10.12Al10 metallic glass is investigated in-situ by high-energy synchrotron X-ray radiation upon heating up to crystallization. The structural rearrangements on the atomic scale during the heating process are analysed as a function of temperature, focusing on shift of the peaks of the structure factor in(More)
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