Hyphenation of abbreviations

[Detlev Humann]

Hi! Lyx/Latex sometimes spilts up abbreviations on two pages, e.g.:   bla bla bla bla bla bla bla bla bla bla bla bla bla NS- [next page] DAP bla bla bla bla bla bla bla.....   How can I prevent this? Thanks in advance! Detlev