The apparent activation energy of cold crystallization was determined to be 24 kJ/mol, indicating that rotation around carbon carbon bonds in a butylene unit of PBT participates in reorientation and crystallization.
It is therefore assumed that rotation around the O CH bond is hindered, resulting in different chemical shifts for the two CH3 groups.
An alternative explanation might be that the pivot point remains at the linkage oxygen but that rotation around the C5 C6 bond allows the length of the O2D···O6′ hydrogen bond to remain constant.
Crystal structure inspection revealed that revolution motors commonly exhibit channel diameters larger than 3 nm, while rotation motors that rotate around one of the two separated DNA strands feature a diameter smaller than 2 nm.
Although computational cost increases with the number of correspondences evaluated, the Euclidean transformation associated with this correspondence can be directly calculated, given that the rotation around the normal necessary to align the two point clouds is determined.
To minimize alignment artifacts, the proximal fixture was attached to a universal joint that permitted rotations around the anteroposterior and mediolateral axes but prevented rotation around the diaphyseal axis[ 3].
This is not the case for the undeformed tyre, where it is well known that rotation splits the eigenfrequencies around the eigenfrequencies of the non-rotating tyre.
Furthermore, this similarity measure takes advantage of the cyclical nature of the descriptor to obtain, along with the similarity value, an index that represents the rotation around the normal at the point-of-interest.
analysis and by theoretical calculations that free rotation around formal single bonds is hampered by conjugation.
This drastic difference is caused by the fact that for rotation around the y-axis by 45° the melt pool contains no intersection point where dendrite domains with three preferred 〈1 0 0〉 growth directions meet.
