The hard yet tough characteristic and high wear resistance for the deposited coatings were attributed to the special nanocomposite microstructures as well as the synergistic lubricant effect derived from both sp2-riched amorphous carbon and V2O5 Magnéli phases formed during friction stage.
Glucomannans, in particular, give extremely tough physical characteristics to some cell walls [ 31].
Both marking methods depended on the tough skin characteristic of X. laevis and the light background provided by the ventral surface.
Dr Reid also showed his characteristic tough side, revealing he had immediately, on becoming home secretary, paid an unannounced visit to the immigration headquarter at Lunar House, joking that this was the only to find out what was going on without the place "smelling of fresh paint".
The tough talk is characteristic of Reid's time in the Senate as a partisan bomb-thrower.
The success of arthropods can partly be attributed to the protection offered by their characteristic tough exoskeleton.
In addition to a hard, wear resistant surface with good frictional characteristics, a tough, fracture resistant core is necessary.
Characteristics: idealistic, tough, adaptable - but judgmental, intolerant and unrealistic.
Even the minority leader, Senator Tom Daschle of South Dakota, calls that goal, with characteristic understatement, "tough".
