Irish physicist George Francis FitzGerald proposed in 1889 that a moving body, owing to its interaction with the ether, undergoes a contraction in the direction of its motion in just the right amount to explain the null result of the Michelson-Morley experiment.
Beside a satisfying one-way shape memory behaviour, the materials have displayed a significant two-way shape memory response, undergoing a reversible elongation-contraction process between two distinguished strain levels when subjected to a constant load and cyclically heated/cooled on a temperature region spanning from below the crystallization temperature to above the melting temperature.
In fact, it is likely to undergo a severe contraction over the next few years.
But while MakerBot has undergone a serious contraction, the company is still kicking.
The electrode undergoes a large contraction during Li+, Na+ or Mg2+ intercalation, differentiating the Ti3C2 paper from conventional electrodes where redox intercalation of ions (e.g. Li+) into the bulk phase (e.g. graphite, silicon) results in volumetric expansion.
Compound 4 possesses a small void (2.3 %), not previously discussed in the literature, and undergoes a smaller contraction than 3.
However, Atg7 −/− CD8+ T cells fail to inflate and instead undergo a dramatic contraction leading to a failure to form a MCMV-specific CD8+ T cell memory pool.
On longer time scales, this isolated cell does undergo a sustained contraction, but the long pause implies that this is not a passive mechanical response.
Thus, the exact dynamics of the long-term effective population size is unclear in both species, but both may have undergone a recent contraction in size.
Unlike the MPECs that are generated following infection, MPECs obtained following DC vaccination will still undergo a normal contraction phase [ 7, 8] and thus only a fraction of them will become long-lived Tm cells.
