Neutron cross section according to its neutron cross section and how it reacts to an incident neutron. Nuclides that tend to absorb a neutron and either decay or keep the neutron in its nucleus are neutron absorbers and will have a "capture cross section" for that reaction. Isotopes that fission, are fissionable fuels and have a corresponding "fission cross section". The remaining isotopes will simply scatter the neutron, and have a "scatter cross section". Some isotopes, like uranium-238, have nonzero cross sections of all three. Isotopes which have a large scatter cross section and a low mass are good neutron moderators (see chart
Papal household nobility formed a part of the Papal Court. On March 28, 1968, Pope Paul VI reorganized the Papal Court with an apostolic letter "motu proprio", renaming it the "Papal Household" (). In changing the name from what it had been for some centuries, Paul VI said he was returning an "original and noble" name. Moreover, many positions were consolidated into new ones or altogether abolished. According to the "motu proprio": "Many of the offices entrusted to members of the Papal Household were deprived of their function, continuing to exist as purely honorary positions, without much correspondence to concrete needs of