Sentence examples for concentrations oscillate from inspiring English sources

Since Volterra [2] proposed a differential equation model to successfully explain the ecological phenomenon of Finme Fish Harbor in 1926, and Lotka [3] also derived the model to describe a hypothetical chemical reaction in which the chemical concentrations oscillate in 1925, the famous Lotka-Volterra equations were accepted by many experts.

For example, as a function of the mammalian circadian cycle, heme concentrations oscillate [ 68].

dNTP pool concentrations oscillate during the cell cycle, reaching a maximum during transition through the G1/S boundary.

Plasma estrogen concentrations oscillate markedly during the phases of the cycle, attaining a peak surge during proestrus and a nadir during metestrus.

Given experimentally measured signals for two substances whose concentrations oscillate, it may be possible to infer numerical values for the unknown parameters and constants of the PSHO model.

Under such restrictions, the system can be said to describe a Positive Simple Harmonic Oscillator (PSHO) and can be applied to the biological context to describe two substances, RNA or protein, whose concentrations oscillate with the same frequency.

During this time period chlorophyll concentrations oscillated between 8 and 18 µg L−1 and the cladoceran zooplankton community mostly consisted of Ceriodaphnia (23.4 ind L−1, SD = ±10), Diaphanosoma (5 ind L−1, SD = ±8) and Bosmina (2 ind L−1, SD = ±2 ) in Lake Krankesjön.

PM mass concentrations oscillated substantially from day to day at both sites.

Indeed, in ~25% of cases, the concentrations oscillated indefinitely, and the integrator did not converge to equilibrium after 5000 iterations.

As can be seen, when 30 g/L ethanol was supplemented, biomass, glucose and ethanol concentrations oscillated at a period of about 80 h in the ranges of 3.3-6.2 3.3-6.2L, 12.5-45.1 g DCW /L66.4-83.3 g/L, with averages of 4.9 g(DCW)/L, 24.8 g/L and 75.4 g/L.

When τStep2/τConvection<10, the temperature and the concentration oscillate in anti-phase, but when τStep2/τConvection is increased above ∼15, i.e., when natural convection is relatively fast, there is, near the axis in the bottom of the reactor, no phase difference between these oscillations.