Sentence examples for have been maintained over from inspiring English sources
Meanwhile, the reproductive integrity of this huge and diversifying species would have been maintained over time by interbreeding between local populations in the peripheral areas where they would have come into contact.
(But) we have seen changes that have been maintained over time," Prof Muir said.
One question this paper seeks to answer is whether increases in efficiency resulting from port modernization subsequent to reforms in Latin America and the Caribbean have been maintained over time.
Morphological resemblance between fossils and recent analogs suggests that cyanobacteria are indeed a very old group of bacteria (see Golubic and Seong-Joo 1999) and that at least some morphological traits have been maintained over time (Golubic and Hofmann 1976; Golubic and Campbell 1979; Schopf 1992b).
The positive carriers have been maintained over three generations.
These cellulases are fully functional and have been maintained over long evolutionary time periods [ 46].
The entity "Northern Ireland" had been maintained over decades by so-called "emergency" laws which, among other things, had allowed some of its citizens to be detained without charge or right to counsel and stripped of the right to a jury trial for certain charges.
