What's the difference between dodecahedron and pyritohedron?
Dodecahedron
Definition:
(n.) A solid having twelve faces.
Example Sentences:
(1) Macroscopic elastic moduli governing the incremental deformations of lung parenchyma are calculated on the basis of a model for an individual lung element in the shape of a regular dodecahedron.
(2) The appearance of the truncated and wild-type E2p was also very similar, as observed by negative-stain electron microscopy, namely, a pentagonal dodecahedron.
(3) Indeed, the cube can be derived from a pentagonal dodecahedron by removing 12 of the 20 triskelions with only slight adjustment of the legs of the remaining triskelions.
(4) Predictions based on the analysis of the 3-D isotropic dodecahedron are in good agreement with experimental values for the Young's, shear, and bulk moduli reported in the literature.
(5) The second type of crystal (not observed in serial sections) is found compatible with a rhomb-dodecahedron which indexes on a cubic cell with a equal to 9.6 nm.
(6) This paper describes a method for the rapid searching of rotational three-dimensional space, relying on the symmetries of the regular icosahedron and dodecahedron.
(7) The tether linking E1 to the core involves the hinge sequence located between the E1-binding and catalytic domains in the primary sequence of E2, whereas the tether linking E3 is probably derived from a similar hinge-type sequence in component X. Tilting of the E2-based cores and comparison with model structures confirmed that their overall shape is that of a pentagonal dodecahedron.
(8) Elastic stiffness within the element is provided by pin-jointed tension members along the edges of the dodecahedron, surface tension is incorporated into its pentagonal faces, and the influence of transpulmonary pressure is simulated by an externally applied hydrostatic tension.
(9) The potential types of sections through the regular dodecahedron, i.e., a twelve-sided shape with faces consisting of pentagons, seemed to fit best with present findings, and this is suggested as an idealized configuration that might be useful in various geometric determinations, e.g., estimates of alveolar surface area and volume.
(10) The localization of the structural protein, by labeling with periodate-oxidized glycoprotein, supported the hypothesis that 60 molecules of p49 aggregated into a dodecahedron (12 pentamers), whereas the two other proteins (p59 and p69) might have a stabilizing function and were localized on the outer surface of the p49 dodecahedron.
(11) Tilting experiments and rotational image analysis indicated that the iscoms were composed of 20 morphological subunits assembled in a pentagonal dodecahedron with a hole on each of the 12 pentagonal faces.
(12) The pentagonal dodecahedron-shaped macromolecule has a maximum diameter, as measured along the 3-fold axis, of approximately 226 A (frozen-hydrated value), and 12 large openings (approximately 63 A in diameter) on the 5-fold axes that lead into a large solvent-accessible cavity (approximately 76-140 A diameter).
(13) It is coordinated to Asp15 carboxylate and to six water molecules forming a dodecahedron of square antiprismatic form.
(14) It was composed of 12 pentons (vertex capsomers plus projections) aggregated into the form of a pentagonal dodecahedron.
Pyritohedron
Definition:
(n.) The pentagonal dodecahedron, a common form of pyrite.