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Solutions averages

There s another reason why the computed solution average temperature had decreasing accuracies in Tests 1, 2 and 3 respectively. The reason is that we started with increasingly viscous solutions, which caused the response time of the temperature measurement to increase rapidly. This response time becomes even more significant because as the solution viscosity increases there are significant rises in the reaction rates and temperatures. [Pg.348]

These novel methodologies have also been applied to access to conformational information in the bound state. For a ligand-receptor complex in solution, averaged RDC are measured for the ligand atom pairs, which depend on the ligand molar ratio of the sugar when free and when... [Pg.334]

As an example chosen in the macromolecular field the C NMR spectrum of syndiotactic polypropylene might be mentioned In solution (averaged random coil conformation, molecular model corresponding to 7) it presents three signals in the crystal state, where a chiral rigid conformation exists [(2/1)2 helix], it shows four signals (Figure 17). [Pg.106]

In contrast, the dipolar and quadrupolar interactions in liquids are averaged to zero, giving rise to high resolution spectra in which chemical shifts and J-couplings can be observed. Furthermore, rapid motions in solutions average the above mentioned tensors to scalar quantities. According to these observations, NMR studies... [Pg.9]

Rapid molecular motions in solutions average to zero the dipolar and quadrupolar Hamiltonian terms. Hence, weak interactions (chemical shift and electron-coupled spin-spin couplings) are the main contributions to the Zeeman term. The chemical shift term (Hs) arises from the shielding effect of the fields produced by surrounding electrons on the nucleus ... [Pg.41]

Extraction of Inactive Coupons with KTOX Solution. Average iron extraction rates are plotted as a function of cumulative extraction time in Figure 2. Where rates for the altered and unaltered granite differ, the confidence level at which the difference is significant is indicated in brackets. [Pg.54]

This chapter might be viewed as a plea for the measurement of time-resolved fluorescence of 2AP when it is introduced into an RNA. The resulting picture of the flexibility of the nucleobase in different chemical and physical contexts would be extremely useful as we build our understanding of the dynamics of RNAs. Measurements of fluorescence intensity can be excellent reporters of RNA folding, as the above examples show, but especially when fluorescence is quenched, the most popular interpretation is that the base is stacked with the attendant implication that its position is static. However, if 2AP remains flexible but spends part of its time stacked with another nucleobase, the solution average fluorescence intensity will still be reduced. Only by measurement of the decay lifetimes of 2AP will its true dynamics be discerned. [Pg.278]

The tin complexes LXIXa-d are colorless, crystalline, and very air-sensitive compounds, monomeric in solution and in the gas phase. The species LXIXc,d tend to disproportionate in solution. Averaged resonance signals with no (117,119) tin coupling are observed in the 1H- and 13C-NMR spectra of these compounds (228 30). [Pg.274]

Solution Average reaction rate from 0 to 7500 seconds is found from ... [Pg.152]

The equations for other solution averaging conditions are given in references (18) and (19). In the special case of a spin-only state with an isotropic g-tensor (i.e. gy = gi and g n = gsi = 2) equation (9) reduces... [Pg.4]

TD-DFT) they calculated the transition energies and dipole moments for NMA both in vacuum and in an aqueous solution. Moreover, in the treatment of the solvent they compared two different approaches, i.e., a polarizable-continuum method (COSMO) and a supermolecule approach. For the latter, the authors performed molecular-dynamics calculations using a force-field model and, subsequently, extracted a cluster containing the solute and 3 water molecules that form hydrogen bonds to the solute. Averages over 90 such configurations were ultimately determined. [Pg.101]

Random Coil Conformations of Polyelectrolyte Chains in Aqueous Solution Average Unperturbed Dimensions... [Pg.373]

Difference in the C chemical shifts of the a-helix form relative to those of the -sheet form. Mistyping or erroneous assignment. This assignment should be reversed. Data taken from neutral aqueous solution. Averaged values from the data of polypeptides containing Re-... [Pg.905]

The experimental apparatus consisted of a vertically mounted tube with liquor flowing in the surrounding annular space and steam condensing inside. The tube was vibrating in a transverse direction. Initial heat transfer coefficients without vibration for calcium sulfate solutions averaged 580 B.t.u./hr. sq. ft. ° F. [Pg.81]

Fig. 2.25. Equilibrium surface tension isotherms for individual CioDMPO solutions (O and solid line) and mixed CioDMPO/HSA solutions for a HSA concentration of lO" mol/1 ( ) the dotted line shows the equilibrium surface tension of the pure HSA solution averaged over 6 measurements (y = 57 1 mN/m),... Fig. 2.25. Equilibrium surface tension isotherms for individual CioDMPO solutions (O and solid line) and mixed CioDMPO/HSA solutions for a HSA concentration of lO" mol/1 ( ) the dotted line shows the equilibrium surface tension of the pure HSA solution averaged over 6 measurements (y = 57 1 mN/m),...
Nucleation and buildup or growth of the silica particles during the electrodialysis process were followed by measuring silica concentration and specific surface area of the silica sol as a function of time firom the moment electric current begins to flow through the sol-electrolyte solution. Average equivalent particle diameter of the silica particles and estimated number of silica particles... [Pg.116]

MICROWAVE ABSORPTION AND MOLECULAR STRUCTURE OF POLAR MOLECULES IN SOLUTIONS. AVERAGED MUTUAL VISCOSITIES AND RELAXATION TIMES OF SOME SUBSTITUTED BENZENES. [Pg.206]

Although the two solutions - average ideal product vs solution from the IdMap-proposed here - are different from the point of view adopted (the IdMap tends to target a smaUer proportion of the popnlation while the mean satisfies a maximum of consumers), in practice they can arrive at a similar result. This is particularly true when consnmers all share an ideal that is qnite close, or when the ideal products from the consumers are homogeneously distributed (the maximum of ideal points being in the centre of the clonds). [Pg.316]


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See also in sourсe #XX -- [ Pg.300 ]




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