Based on the experiments performed using the SPS this reduction in overpressure and/or induction time required for the accumulation of hydrates may be attributed to increased bubble surface area, increased gas concentration, increased lifetime of bubbles, increased total volume of the SPS, or a combination of the above.
In fluorescence mode, the use of DPDW can be used to image fluorophore concentration and lifetime in three dimensions.
Analysis of this temporal dispersion curve the fluorescent temporal point spread function (TPSF is used to obtain information of the in vivo fluorophore depth, concentration, and lifetime.
Hybridization between the two strands locks the complexes at the cell surface by increasing net hydrophobicity, increasing their total concentration and lifetime, and dramatically improving their utility in a variety of biomedical applications.
The SMF increases the concentration and/or lifetime of free radicals that escape from the radical pair so that the critical radical concentration, needed to initiate membrane damage and cause cell lysis, is reached sooner [ 22].
In a Chilean study of three regions with high, medium, and nondetectable ClO4− concentrations in drinking water (Crump et al. 2000), no associations between newborns' TSH concentrations and ClO4− region or between childhood TSH concentrations and lifetime residence in the three regions were reported.
The low atmospheric PAH concentrations yielded lifetime cancer risk estimates from inhalation of atmospheric PAHs that are negligible for all concentrations, and even below the more conservative US EPA cancer risk threshold of 1E-6 (Table 7).
It should be noted that in this case the fitting procedure was used to estimate the relative concentrations and lifetimes of both donor species to obtain a baseline estimate of all four parameters.
As a result, even with similar photoinitiation conditions, the radical concentrations and lifetimes can be substantially different during the evolution of PEG gels formed via acrylate chain polymerization versus thiol ene step polymerizations.
