The reason for the improved response was previously found to be the overall higher amount of vinyl groups as well as the placement of these groups along the molecular weight distribution.
The reason for the improved response was the overall higher amount of vinyl groups as well as the placement of vinyl groups along the molecular weight distribution; the longer molecules contained more vinyls than the shorter ones.
One modification of polyacetylene that scientists had experimented with in order to build a similar but more stable molecule was the placement of functional groups such as aromatic rings on every other triple bond.
Here the placement of the groups is textually motivated.
The alternating copolymerization gives precise control over monomer sequence, which affords precise placement of functional groups along the polymer backbone.
Each diagram then deploys its own semiotic conventions to encode atomic identity, perspective in space, and relative spatial placement of atomic groups.
As synthetic methods evolve toward the preparation of increasingly complex nanostructured materials inspired from biological nano-objects, the ability to tailor the three-dimensional architecture and the placement of functional groups at well-defined positions within those frameworks is advancing.
Docked protein ligand complexes indicated that CBPs may bind to the target proteases via electrostatic interactions and aromatic stacking to catalytically crucial residues and that the placement of functional groups seems to be assisted by the rigid CBP backbone.
The results are shown in Figure 2. The relative placement of gymnosperm groups changes as outgroup taxa are excluded or rooting is forced on certain seed plant taxa.
Systematic influence from potential, undetected site-dependent differences was avoided by alternating the placement of the groups between animals.
Note also that, despite uncertainty regarding the phylogenetic placement of these groups, their inferred age was relatively similar across calibration scenarios.
