2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45740We extract information on the fluxes of Be and CNO neutrinos directly from solar neutrino experiments, with minimal assumptions about solar models. Next we compare these results with solar models, both standard and non standard ones. Finally we discuss the expectations for Borexino, both in the case of standard and non standard neutrinos.Based on invited talks to Workshop on Double Beta Decay and Related Topics, Trento Italy, April 1995 and to TAUP95, Toledo Spain, September 1995. 11 pages with included figures, uuencoded postscript fileHigh Energy Physics - Phenomenologytext