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Just determined

E. Taskinen and K. Nummelin, J. Org. Chem., 50, 4833 (1985). These authors performed the isomer equilibration at several temperatures and so could use the experimentally derived equilibrium constant to derive the enthalpy of rearrangement. There was no need for assuming the entropy of isomerization is 0 or just determined by symmetry number corrections. [Pg.107]

In the first instance such an expression tells us that the current is a function of the concentration of the active species at any distance from the electrode. However the concentration of the active species depends either on distance or time. Fick s second law just determines how the concentration of species Ox changes with time. [Pg.37]

Liquids. For a long time, the study of infrared absorption by liquids and solutions has been a convenient way of determining rotovibrational spectra. The goal has often been to just determine peak frequencies, without paying much attention to the band shapes. In more recent years, attention has been devoted to a study of the shapes of vibrational bands and the dynamics of the molecules in the liquid. Only a crude understanding of the dynamics exists which is based on often highly simplified models of real liquids. [Pg.374]

Referring to Fig. A.2, assume that the principal coordinates align with z, r, and O. The unit vectors (direction cosines) just determined correspond with the row of the transformation matrix N. Thus, if the principal stress tensor is... [Pg.760]

As in all catalytic processes, catalyst stability is an essential feature. We have investigated the stability of acylase in conditions that are pertinent for large-scale processes. Instead of just determining thermal stability, which can be done by measuring storage stability of the enzyme in particular conditions of temperature and pH, we have also determined operational stability. The relevant parameter for operational stability studies of enzymes is the product of active enzyme concentration [E] and residence time t, [E] t. For a CSTR, the quantities [E] and t are linked by Eq. (19.37), where [S0] = initial substrate concentration, % = degree of conversion, and r(x) = reaction rate (Wandrey, 1977 Bommarius, 1992b). [Pg.553]

Allen Clamen Yes, but the market-driven research determines whether people will pay a premium for this improvement. It isn t just determining what you need and getting it to you regardless of the fact that you won t pay for it. What do you need and how valuable is it What will it allow you to do and how much money will it save you or provide to your customer What is the value proposition That is part of market research. [Pg.114]

The vector u is an n+m dimensional vector which can be partitioned into two vectors the n-dimensional vector x of measured parameters and the m-dimensional vector of unmeasured ones. Some of the unmeasured variables can be evaluated from the measurement of the others variables using the balance equations, and some not. Thus, the unmeasured parameters may be classified as "determinable" or "indeterminable". On the other hand, some of the elements of vector x of measured variables can be computed from the balances and the rest of the measured parameters. Such measured variables will be called "overdetermined". The rest of the elements of vector x will be called "just determined". Measurement of x is denoted by x, and the difference of any measured system parameter and its true value is called the "error" denoted by 6, i.e. [Pg.155]

Classify the measured variables into overdetermined and just determined. [Pg.156]

Let the set M represent all the measured parametersWe want to form the set M (overdetermined parameters) and M2 (just determined). [Pg.162]

In the previous section we classified the measured parameters into two categories 1) overmeasured (overdetermined) 2) not overmeasured (just determined), so we can correct only the parameters belonging to the first category. In this way the accuracy of measured data can be improved. The next question is how to formulate the appropiate subset of balances to be used in the rectification by solving the accompanying least square problem. [Pg.163]

It is instructive to reverse the above calculation. With the values of K and B just determined, the intrinsic viscosity of the polystyrene-toluene system as a function of the molecular weight can easily be calculated from Eq. (58). The parameter z may first be evaluated from Eq. (16), which may be rewritten... [Pg.223]

So your first task is pretty easy. Just determine what it looks like when four hydrogen atoms, with v orbitals, bond to the four carbon orbitals in sigma (straight-on) bonds. [Pg.124]

Referring to the flowchart, we see that a balance on atomic carbon involves only one unknown (nco) and a balance on atomic hydrogen also involves one unknown (hh o). but a balance on atomic oxygen involves three unknowns. We will therefore write the C and H balances first, and then the O balance to determine the remaining unknown variable, no. All atomic balances have the form input = output. We will just determine the component amounts calculation of the mole fractions then follows as in the previous part. [Pg.133]

If the surface is tilled so that the normal of the surface makes an angle of a = 60 with the line connecting the point of viewing to the center of the surface, the projected area would be dA = dA cos a = (5 cm jeos 60 = 2.5 cm, and the solid angle in this case would be half of the value just determined. [Pg.690]

As you have just determined, Werner s coordination structures comply with most of the data. Only for CoCl3 (NH3)4 and CoCl3 (NH3)3H20 do his structures fail to predict appropriate conductance values. Werner explained that solvent water could replace ammonia and acid residues that are directly attached to the metal in some complexes the anomalous conductivity results as well as the inability to isolate the second isomer of CoCl3 (NH3)4 were, Werner argued, due to the instability of these complexes in... [Pg.27]

The spectral intensity Lx(X,f3,p,T) characterises in a detailed way the dependence of the energy emitted on the wavelength and direction. An important task of both theoretical and experimental investigations is to determine this distribution function for as many materials as possible. This is a difficult task to carry out, and it is normally satisfactory to just determine the radiation quantities that either combine the emissions into all directions of the hemisphere or the radiation over all wavelengths. The quantities, the hemispherical spectral emissive power Mx and the total intensity L, characterise the distribution of the radiative flux over the wavelengths or the directions in the hemisphere. [Pg.509]

Nevertheless, we would settle for an inoculation to immunize against cancer, all cancers, and get it over with once and for all. That is, presumably if we could just determine which and what viruses cause the different cancers. So in one way or another there is a continuing search for universally effective cancer vaccines, in a class with polio vaccines, an ideal yet to be realized, though Virginia Livingston,... [Pg.67]


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See also in sourсe #XX -- [ Pg.32 , Pg.49 , Pg.197 ]




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Just Determined Systems

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