The importance of vibrational-to-electronic V-E energy transfer mediated by spin-orbit coupling in the collisional removal of O2 X 3 g − , 26 by O2 has been reported in a recent communication F. Dayou, J. Campos-Martínez, M. I. Hernández, and R. Hernández-Lamoneda, J. Chem. Phys. 120, 10355 2004 . The present work provides details on the electronic properties of the dimer O2 2 relevant to the s...

Oxygen dissociation in Ar-O2 microwave surface-wave discharges at p = 1 − 25 mbar is theoretically investigated, focusing on the dependence of the dissociation degree on pressure and on the mixture composition. It is shown that the dissociation degree is higher for high Ar content discharges, due to the modifications in the electron energy distribution function (EEDF) and to the effectiveness o...

Compared with moderate- and heavy-intensity exercise, the adjustment of O2 uptake (VO2) to exercise intensities that elicit peak VO2 has received relatively little attention. This study examined the VO2 response of 21 young, healthy subjects (25 +/- 6 yr; mean +/- SD) during cycle ergometer exercise to step transitions in work rate (WR) corresponding to 90, 100, and 110% of the peak WR achieved...

The benthic O2 uptake and the O2 microdistribution in a coastal sediment of Aarhus Bay, Denmark, were investigated during a seasonal study. Measurements were performed in situ by a profiling lander and a flux chamber lander, as well as on recovered sediment cores. The O2 penetration depth, the diffusive O2 uptake, and the volumespecific O2 consumption rate strongly depended on the seasonal chan...

The recessive opaque-2 mutant gene (o2) reduces α-zeins accumulation in maize endosperm, changes the amino acid composition of maize kernels, induces an opaque endosperm, and increases the lysine content of kernels. The quality protein maize (QPM) inbred line CA339 (o2o2) and an elite normal inbred line liao2345 (O2O2) were used to construct o2 near-isogenic lines (NILs) by marker-assisted sele...

To maintain arterial oxygen saturation (Sa,O2) above 90% in patients with acute respiratory failure, oxygen (O2) is often added to the circuit of two-level noninvasive positive pressure ventilation (NPPV). However, the final inspiratory oxygen fraction (Fi,O2) is not known. To clarify this issue, the effect of different inspiratory positive airway pressures (IPAP) of the oxygen tubing connectio...

The global carbon cycle model is presented as a natural self-regulating machine that provides renewable biomass synthesis during evolution. consists of two parts, geological and biosphere. Between the there an interaction. part controlled by movement lithosphere plates, which under guidance gravitational forces from celestial bodies acting on Earth. plates divided into phase relatively quick mo...

OBJECTIVES Hemodynamic support is aimed at providing adequate O2 delivery to the tissues; most interventions target O2 delivery increase. Mixed venous O2 saturation is a frequently used parameter to evaluate the adequacy of O2 delivery. METHODS We describe a mathematical model to compare the effects of increasing O2 delivery on venous oxygen saturation through increases in the inspired O2 fra...

We recall that hydrogen combustion does resolve the environmental problems of fossil fuels due to excessive emission of carcinogenic substances and carbon dioxide. However, hydrogen combustion implies the permanent removal from our atmosphere of directly usable oxygen, a serious environmental problem called oxygen depletion, since the combustion turns oxygen into water whose separation to resto...