Sentences with phrase «oxygen concentration during»
Oxygen concentration during mouse oocyte in vitro maturation affects embryo and fetal development.
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Because oxygen is critical to many forms of life and geochemical processes, numerous models and indirect proxies for the oxygen content in the atmosphere have been developed over the years, but there was no consensus on whether oxygen concentrations were rising, falling or flat during the past million years (and before fossil fuel burning).
In some of the samples, the team dramatically reduced the concentrations of dissolved phosphate and oxygen to simulate conditions that might exist inside equipment used to recycle urine into water on spacecraft during long - duration flights.
«During photosynthesis plants bind atmospheric carbon, whose isotopic composition is preserved in resins over millions of years, and from this, we can infer atmospheric oxygen concentrations,» explains Ralf Tappert.
Mario Schietroma and his coauthors, based at the University of L'Aquila in Italy, reported that giving patients high concentrations of oxygen during and after colorectal surgery significantly reduced their risk of infections.
Both panels are reconstructions of oxygen concentrations in the California Margin during a cold, glacial climate (left, 18,000 years ago) and a warm, interglacial climate (right, 14,000 years ago; Moffitt et al. 2015a).
While there is little doubt that dissolved oxygen concentrations exerted a key control on benthic ecosystems during the past, as they do today, the impact on pelagic ecosystems is less straightforward.