The great evolutionary boundary between the prokaryotes and the eukaryotes, however, has meant a major taxonomic boundary restricting the protists to eukaryotic microorganisms (but occasionally including relatively macroscopic organisms) and the bacteria to prokaryotic microorganisms.
δ phase pinning of grain boundaries restricted grain growth and hence the fractional increase of special grain boundaries.
Andrew Lumsden, the centre's director, explains that each segment expresses a unique combination of patterning genes and that the segment boundaries restrict the movements of immature cells.
Not when young people still think they need to honor ugly and antiquated boundaries restricting which of their fellow Americans are worthy of their love and commitment, even if it's only to conform to the previous generation's biases.
Last November, voters approved 173 local referendums to limit suburban sprawl by, for example, allowing the purchase of farms near cities or by imposing boundaries restricting urban growth to particular spaces.
Since the serrated boundaries restrict dislocation movement, the rotation of subgrains with the serrated boundaries is more favorable for accommodating further deformation than intragranular strain, and therefore boundaries become high-angled.
My life is a constant circus of disabling circumstances and suffocating limitations – unyielding boundaries restricting who and what I can be, when the sky used to be my only limit.
