Coil volume

Figure C2.6.10. Phase diagram of colloid-polymer mixtures polymer coil volume fraction vs particle...

Hence the reaction coil volumes were kept as small as possible to reduce bandbroadening, i.e. 17 pL and 33 pL, for coil I and coil II, respectively. 

For a given number of nuclides placed in the sample coil volume, the inherent S/N ratio p is a parameter depending only on the probe and preamplifier assembly. It is usually measured in terms of the maximum FID amplitude after a 90° pulse applied after the sample has reached its equilibrium magnetization Ma in the acquisition field Ba- Defined in this way, it is independent of the details of any FFC sequence. 

Depending on the molecular weight of the macromolecules and the quality of the solvent, the coil volume of macromolecules in solution may be 20 to 1000 times larger than the chain volume itself. Thus, such a swollen gel particle may consist of more than 99% solvent. Since the diameter of such gel coils may be between ten and several hundred nanometers - again depending on the molecular... 

In contrast to our MSB technique, Kakugawa et al. formulated the cost function to be minimized as a product of coil cross sectional area and its current density. The result is an optimal coil configuration for the coil cross sectional area and coil current density. However, it is not clear that the superconducting volume is also minimized when cross sectional area is reduced, as individual coil volumes are a fimction of the coil radius, which was not considered. 

The coil takes up volume in the vessel, so the size of the reactor will have to be larger to provide the same holdup for reaction. If the coil volume is too high a fraction of the total volume, the mixing in the reactor may be adversely affected. 

If a small-diameter pipe is used, the heat transfer area per unit of coil volume will be large. However, the pressure drop through the coil will be large unless multiple parallel passes are used. Parallel passes can present flow distribution problems. Small-diameter tubes also present mechanical strength problems. 

The solvent quality of water deteriorates by additions of alcohol and salt, singly and combined. Polyanions are especially sensitive to cations and are invariably precipitated by the di- and polyvalent species in sufficiently high concentration. Charge suppression by nonsolvents and cations decreases the polyanionic coil volume (vc) and simultaneously reverses the solute-solvent interaction through 0 to precipitation. Micromolecules can alter the dispersion rheology (Pastor et al., 1994) of charged an neutral polysaccharides. 

Hydration Capacitance Maximum excluded volume Minimum excluded volume effects Coil volume expansion... 

However, to illustrate the effect of solvent on viscosity, we measured the intrinsic viscosities of three copolymers in a polar solvent—benzyl alcohol at 80°C. The two solvents are compared in Table B. Although the intrinsic viscosities of the hydroxyl-containing copolymers are similar in the two solvents, the value for pure polystyrene is much reduced in the polar solvent. This provides indirect evidence for the existence of a smaller coil volume for the copolymer molecules in the nonpolar solvent. 

Ratio Coil Volume to Useful Volume Ratio Coil surface to Useful Volume Ratio Useful Volume to Production Capacity... 

As frequency increases, d decreases, causing the wire to present a smaller cross-sectional area. This increases the ac resistance and consequently lowers the circuit Q. NMR coils are often made of flat wire rather than normal round wire, the former also having the advantage of better rf homogeneity. The magnitude of the induced B i field is related to the power applied, Q, and the coil volume, V, by... 

Mass in coil = impurity level) (sample concentration) (injection volume) (coil volume)... 

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