It also recommended only calculating the impact of NO2 when concentrations exceed 20 microgrammes per cubic metre.
Their consumption is increasing and is the prime reason why atmospheric carbon concentrations exceed 400 ppm, why air pollution harms millions, and why energy usage pollutes water.
This problem is acute for plasmid-borne systems where promoter concentrations exceed the TF promoter equilibrium constant.
It is observed that the effect of oxygen concentration on combustion time of micron-sized aluminum particles is weak when oxygen concentrations exceed 21%.
Across metabolism, we observe that absolute metabolite concentrations and ΔG are substantially conserved and that most substrate (but not inhibitor) concentrations exceed the associated enzyme binding site dissociation constant (Km or Ki).
Emerging evidence suggests that this phenomenon arises at least in part because the native states of many proteins are inherently metastable when their cellular concentrations exceed their critical values.
The cation concentration indicate that 83, 39 and 22 % of the K+, Na+, Ca2+ concentrations exceed the WHO limit.
It indicates that sodium concentrations exceed chloride concentrations in many samples (45 %), suggesting dissolution of silicate minerals.
In the study area, it has been found that in most of the locations, the chloride concentrations exceed the limit during premonsoon season.
Concerning sodium toxicity from leaf intake, all samples belong to category III as their concentrations exceed 69.0 mg L−1 except Kassab sample (point 6).
Some of the heavy metals considered as micronutrients become detrimental to human health when their concentrations exceed the permissible level of drinking water (Prasanna et al. 2011).
