Thus, the combination of magnets acts as a negative stiffness counteracting the positive stiffness provided by the mechanical springs.
Finally, a special optimization procedure, based on genetic algorithms, allows a thorough comparison between classical structural schemes, whose bearing capacity is due to the mechanical stiffness, and prestressed structures, whose bearing capacity is also due to the geometrical stiffness provided by the prestress.
In this way, these elements are hold under isometric tension (prestress) and provide mechanical stiffness for the whole cell (43).
Crosslinking is required to provide mechanical stiffness and stability; therefore it may be advantageous to enhance the cell activity by means of adding receptor-specific peptide sequences to the film surface.
In contrast, 0.5 ng/mL IL-1α preconditioning provided even greater protection against degradation, with mechanical stiffness and GAG content higher than positive control samples (p < 0.05), and more importantly, similar to negative control constructs (p > 0.05, Fig. 2b).
Although heel-strikes repetitively occur at this rate only after an individual gait cycle, this does provide a maximum frequency at which to measure mechanical stiffness.
Based upon these results, we conclude that scaffold properties provided by additive manufacturing techniques such as SLA fabrication, particularly increased mechanical stiffness and high permeability, may stimulate dramatic BMSC responses that promote rapid bone tissue regeneration.
We have hypothesized that utilization of multi-functional cross-linking molecules to form hydrogels could provide a wider range and tighter control over the degradation rates and mechanical stiffness of gels than bi-functional cross-linking molecules.
Finally, details on the synthesis, physico-chemical properties, and in vivo characterization of discoidal polymeric nanoconstructs are provided, with particular emphasis on their ability to independently control size, shape, surface properties, and mechanical stiffness.
It is uncertain whether chondrocytes containing gel acquire sufficient mechanical stiffness at transplantation, but transplanted chondrocytes can proliferate and synthesise the extracellular matrix some time after transplantation, thereby providing a stiffer interposition material.
