Maternal plasma concentrations of glucocorticoids predict about 35% of the variance of concentrations in milk (Sullivan et al. 2011).
z-Scoring by concentration was chosen instead of more general transformation or scaling because a) the dependence of variance on concentration was not straightforward and b) as well as standardising the variance, z-scoring removed the primary effect of concentration which would otherwise have to be controlled for in testing the effects of interest.
It is well known that the means and variances of concentrations predicted by the LNA are exact only for reaction networks involving at most unimolecular reactions.
The results for the mean and the variance of the concentration are also in good agreement with experimental results from the literature.
Networks are the result of the follow up reactions initiated by a continuous series of electron pulse-generated hydroxyl radicals, which may have a different fate at the variance of polymer concentration.
When the DPE derivative was held constant in the PS-Li capping reaction, the kinetic parameter (kSD) did not change with the variance of either concentration or degree of polymerization of PS-Li.
For method I, kinematic mixing rates are established from the way infinitesimal fluid line elements are stretched by the flow and, from method II, the mixing rate is determined from the rate at which the variance of the concentration of a particle cloud decreased, during the mixing process.
The variance of protein concentration fluctuations in steady-state conditions can be calculated from this distribution function and was found to be given by (87) 〈 η P 2 〉 = 1 Ω [ P ] 1 + b.
On the other hand, the lack of a genotype effect in large islets may be due to the variance of oxygen concentration in these islets, where the core is relatively anoxic as a consequence of larger diffusion distance when exposed to hypoxia in vitro.
