Mejoras en el cálculo de magnitudes rotacionales de macromoléculas.

The hydrodynamic theory of macromolecular models composed by spherical elements fails to predict the components of ihe rotational friction tensor for a given axis when the, centers of the elements lye on that axis. Generally, for models with few elements whose sizes are not much smaller than the average of the distances between them, the theory leads to erroneous results. We have found a way of correcting the results of the original theory by just adding 6Vη 0 , V being the the macromolecule's hydrated volume and η 0 the viscosity of the solvent, fo the diagonal componentes of the friction tensor. To check he performance of his correction, calcuiations have been made for two kirids of models for which exact results are available.