in this study, the effect of grain size on nitrogen diffusion into ck45 has been investigated. in order to obtain different grain sizes, samples were annealed and normalized at various temperatures and durations.the grain size was determined with clemex vision software. then, the specimens were exposed to dc plasma nitriding treatment and again analyzed by optical microscope ,scanning electron ...

Lisette Okkels Jensen, MD, DMSci, PhD; Per Thayssen, MD, DMSci; Henrik Steen Hansen, MD, DMSci; Evald Høj Christiansen, MD, PhD; Hans Henrik Tilsted, MD; Lars Romer Krusell, MD; Anton Boel Villadsen, MD; Anders Junker, MD, PhD; Knud Nørregaard Hansen, MD; Anne Kaltoft, MD, PhD; Michael Maeng, MD, PhD; Knud Erik Pedersen, MD, DMSci; Steen Dalby Kristensen, MD, DMSci; Hans Erik Bøtker, MD, DMSci,...

1035 " L ife is a stage; we play our part and receive our reward, " wrote Vondel, the great poet of the Netherlands, expressing the moral preoccupation of 17th-century Dutch culture (1). The 17th century was a time of geographic exploration and economic prosperity for the famed lowlands. Laboriously claimed from the sea, criss-crossed by canals and spotted with windmills, the tiny country produ...

This paper proposes a two-dimensional elastic shell model to characterize the deformation of single-walled carbon nanotubes using the in-plane rigidity, Poisson ratio, bending rigidity and off-plane torsion rigidity as independent elastic constants. It was found that the off-plane torsion rigidity of a single-walled carbon nanotube is not zero due to the off-plane change in the π-orbital electr...