Betekenis van:
kinetics

Voorbeeldzinnen

1. Metabolism and residue kinetics
2. Although first order kinetics are normally expected under the prescribed conditions, there may be certain circumstances where other kinetics are more appropriate.
3. This implies that the anticipated biodegradation kinetics is first order (‘non-growth’ kinetics) and that the test substance may be degraded by ‘cometabolism’.
4. Models for mineralisation kinetics with the variables of substrate concentration and population density.
5. For the determination of biodegradation kinetics, the concentrations of the test substance must be below its water solubility.
6. At least two different concentrations of test substance should be used in order to determine the degradation kinetics.
7. However, the data can nearly always be described by pseudo first order kinetics accepting a concentration dependent rate constant.
8. With true first order kinetics the specific degradation rate constant, k, is independent of time and concentration.
9. Simkins, S. and Alexander, M. (1984). Models for mineralisation kinetics with the variables of substrate concentration and population density. Appl.
10. First order kinetics implies that the rate of degradation (mg/L/day) is proportional to the concentration of substrate which declines over time.
11. The principal objective of the simulation test is to determine the mineralisation of the test substance in surface water, and mineralisation constitutes the basis for expressing degradation kinetics.
12. The evidence for the “proof of concept” and the kinetics of the product to obtain the intended regeneration, repairing or replacement shall be provided.
13. Simkins, S. and Alexander, M. (1984). Models for mineralisation kinetics with the variables of substrate concentration and population density. Appl. Environ.
14. However, for a limited data range, pseudo first order kinetics can be applied and the degradation half-time DT50 (time to reach 50 % degradation) estimated.
15. Compared to the total mass of biodegradable carbon substrates available in the natural water used for the test, the test substance present at low concentration will serve as a secondary substrate. This implies that the anticipated biodegradation kinetics is first order (‘non-growth’ kinetics) and that the test substance may be degraded by ‘cometabolism’.