For the life of fish and other aquatic animals, oxygen dissolved in water is particularly important. Oxygen partially penetrates into from atmosphere, released reservoir itself as a result livelihoods plant organisms. By means chlorophyll, green plants extracted carbon dioxide needed to construct living matter carbon, allocating surrounding space. This process photosynthesis proceeds due energy...

It has still not been shown unequivocally whether a decrement of arterial oxygen content or tension governs the ventilatory response to hypoxia. In an attempt to discriminate between the two possibilities, we have measured the ventilatory response to isocapnic progressive hypoxia in two healthy children with a high oxygen affinity hemoglobin (Hb Andrew-Minneapolis) and in their age- and sex-mat...

The study investigated the photochemical transformation of carboxylated multiwalled carbon nanotubes (COOH-MWCNTs), an important environmental process affecting their physicochemical characteristics and hence fate and transport. UVA irradiation removed carboxyl groups from COOH-MWCNT surface while creating other oxygen-containing functional groups with an overall decrease in total surface oxyge...