I am trying to compute the time of concentration (Tc) through railroad ballast. The ballast section is only 6" thick and includes a gradation of 2.5" minus. Currently we are thinking that we need to compute the
The decrease in absorbance of new fuchsin at 540nm over a fixed time is proportional to the concentration of sulfite over the range of 0.15–2.0gmL1. The detection limit and RSD% are 0.08gmL1 and 1.1% respectively. The experimental calibration matrix for PLS calibration method was designed ...
concentration versus time profile is somewhat oversimplified, and the number is actually dependent on several variables, including the shape of the PK orTKcurve; the half-life of the compound; the number of animals in the study; and the amount of volume that can reasonably be taken from any ...
An electrochemically homogeneous electrode-solution interface should be understood as spatially invariant in both terms of intrinsic reactivity for the electrode side and electrical resistance mainly for the solution side. The latter remains presumably assumed in almost all cases. However, by using optical...
(1997) estimated an econometric model to evaluate the price elasticity of residential demand of water using rate structure, location, season and others exploratory variables. Nunnari et al. (2004) compared several statistical techniques for modelling SO2 concentration using the information of wind ...
ΔRn (delta Rn): The magnitude of the signal generated by the given set of PCR conditions. The ΔRn value is determined by the following formula: (Rn+) – (Rn-) Standard A sample of known concentration used to construct a standard curve. By running ...
48). Considering the physiological concentration of NE in neurons (1–100 nM), the developed probe BPS3 could detect NE within 100 ms. Such a fast reaction rate has not been reported on other small molecular NE probes so far, whose detection time is generally on the timescale of ...
(ready to use hot start PCR mix), composed of dNTP mix (with dUTP instead of dTTP), reaction buffer, FastStart Taq DNA polymerase, and 6.4 mM MgCl2, forward and reverse primers with a concentration of 0.5 mM), FAM-labeled probe with a concentration of 0.2 mM, dimethyl ...
It features an array of microwells into which single cells are seeded, each well containing a platinum porphyrin that is used to measure the oxygen concentration by phosphorescence lifetime determinations. The wells are diffusionally sealed with a lid under load, and the consumption of oxygen is ...
Consequently, it is expected that τR should be inversely proportional to concentration, flow rate or solvent viscosity in a range of systems. Figure 9 shows an example of frequency N(Δt) versus time plots for two identical particle systems moving at different velocities through the probe ...