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Three-constant

The three constants associated with the rates of the individual steps in reactions (5.F). [Pg.281]

In 1893, it was shown that corresponding states are not unique to van der Waals equation of state (73). Rather, for any equation of state having not more than three constants, corresponding states are only a mathematical consequence. [Pg.239]

Calculated from the best three-constant equation recommended by Miller, Ind. Eng. Chem. Fundam., 9, 585 (1970). Trt refers to the lower curve, and T,-u, to the upper curve. [Pg.177]

Although only three constants appear explicitly in Eq. (9-91), two further constants are imphed by the choice of zero as the lower bound of y and the point of inflexion at y = c/2. The usual use of Eq. (9-91) is in sales forecasting, in which case y is sales demand andx is time. If such a cui ve alreac exists, the value of c can be read as the upper asymptote and a andZ obtained by the use of an auxiliary variable T where... [Pg.825]

Sepn. Purif., 3, 19 (1989)] takes holdup into account and applies to random as well as structured packings. It is somewhat cumbersome to use and requires three constants for each packing type and size. Such constants have been evaluated, however, For a number of commonly used packings. A more recent pressure drop and holdup model, suitable for extension to the flood point, has been pubhshed by Rocha et al. [Jnd. Eng. Chem. Research, 35, 1660 (1996)]. This model takes into account variations in surface texturing of the different brands of packing. [Pg.1390]

The most remarkable feature of the antibody molecule is revealed by comparing the amino acid sequences from many different immunoglobulin IgG molecules. This comparison shows that between different IgGs the amino-terminal domain of each polypeptide chain is highly variable, whereas the remaining domains have constant sequences. A light chain is thus built up from one amino-terminal variable domain (Vl) and one carboxy-terminal constant domain (Cl), and a heavy chain from one amino-terminal variable domain (Vh), followed by three constant domains (Chi, Ch2. and Chs). [Pg.301]

IgG antibody molecules are composed of two light chains and two heavy chains joined together by disulfide bonds. Each light chain has one variable domain and one constant domain, while each heavy chain has one variable and three constant domains. All of the domains have a similar three-dimensional structure known as the immunoglobulin fold. The Fc stem of the molecule is formed by constant domains from each of the heavy chains, while two Fab arms are formed by constant and variable domains from both heavy and light chains. The hinge region between the stem and the arms is flexible and allows the arms to move relative to each other and to the stem. [Pg.320]

This equation contains three constants (3/2, R, NA) and only one variable, the temperature T. It follows that—... [Pg.118]

The constant G, called the shear modulus, the modulus of rigidity, or the torsion modulus, is directly comparable to the modulus of elasticity used in direct-stress applications. Only two material constants are required to characterize a material if one assumes the material to be linearly elastic, homogeneous, and isotropic. However, three material constants exist the tensile modulus of elasticity (E), Poisson s ratio (v), and the shear modulus (G). An equation relating these three constants, based on engineering s elasticity principles, follows ... [Pg.61]

The nature of the assumptions entertained in the deduction of Kirchhoff s equation ensure the theoretical validity of the latter only at low temperatures. Notwithstanding this, Juliusburger (1900), from a review of existing data, found the equation to give results deviating by 3 per cent, at most from the observed values for 74 substances out of 80 examined. He considers that it may be regarded as an empirical formula with three constants, up to the critical point, and gives the values of A, B, C for a number of substances. [Pg.180]

By means of these equations we can eliminate three constants from (2). But, if the equation (2) is now reduced, as is required by the law of corresponding states, it must not contain any constants characteristic of the substance, hence (2) can contain only three independent characteristic constants. In this case (2) can always be written in the form ... [Pg.230]

Suppose we attempt to evaluate all three constants, k, m, and n. Then the first three components of Equations (7.51) are needed. Evaluating the various... [Pg.257]

In summary, the simple Michaelis-Menten form of Equation (12.1) is usually sufficient for first-order reactions. It has two adjustable constants. Equation (12.4) is available for special cases where the reaction rate has an interior maximum or an inflection point. It has three adjustable constants after setting either 2 = 0 (inhibition) or k = 0 (activation). These forms are consistent with two adsorptions of the reactant species. They each require three constants. The general form of Equation (12.4) has four constants, which is a little excessive for a... [Pg.439]

Plots of volume vs. temperature for 1 mol of air at three constant pressures. [Pg.287]

Consider the case of three, constant-volume tanks in series, as represented in Fig. 2.11, in which the tanks have differing volumes V], V2, V3, respectively.. Assuming well-mixed tanks, the component balance equations are... [Pg.74]

Since there are three constants, we must have the results of three tests to evaluate them. The yield is known at point A (P=29 psia, Y = 15%). If the second pressure were chosen as 35 psia the yield would be better (Y =20%). This would indicate that the third point should be taken at a higher pressure, since the yield appears to increase with pressure. It might be taken at 41 psia (Y=25%). If the yield for the second test had been less than for the first, the third experiment point should have been taken at a pressure less than that for the first test, such as 23 psia. [Pg.395]

Hint 2. There is a way of using all of the data to obtain these three constants by taking each of the two sets of data and plotting the appropriate straight line for each. Round off your values of m and n to the nearest half integer. [Pg.210]

The product of three constants can conveniently be replaced by a single constant k2, which amounts to setting c = 1. The final expression... [Pg.248]

Given data of (C, t) or of (r, C) and a correlation for kda, the other constants can be found as for single reactions. All three constants also can be found by nonlinear regression or by the solution of three simultaneous equations. [Pg.52]

After linearization by taking logarithms, the three constants can be found by multilinear regression. [Pg.111]

The three constants k, a and 3 are found by multilinear regression with data of (Ca, t) of this arrangement of the material balance,... [Pg.111]

P3.06.10. RATE EQUATION WITH THREE CONSTANTS A rate equation has the form... [Pg.203]

Given the data of the first three columns of the table, find the three constants. [Pg.203]

This is a cubic equation in r with three constants and the partial pressure of the reactant in the gas phase, pg, as the variable. [Pg.718]

Figure 1.11. Schematic representation of an IgG molecule. The heavy chains comprise three constant regions (Cri-C ) the molecular sites involved in binding to antigen, complement or to Fc receptors are indicated. Figure 1.11. Schematic representation of an IgG molecule. The heavy chains comprise three constant regions (Cri-C ) the molecular sites involved in binding to antigen, complement or to Fc receptors are indicated.
IgA has a short half-life in serum (6 days) and comprises about 12-20% of the total serum immunoglobulins. However, because of its presence in bodily fluids, it is the most abundant immunoglobulin present in the body. It comprises three constant domains, and neutrophils, monocytes and some other immune cells possess receptors for IgA (FcaR). Neither of the two IgA subclasses, IgAi and IgA2, can fix complement via the classical pathway. Instead, these antibodies neutralise antigens at mucosal surfaces, in the absence of complement fixation (which would be pro-inflammatory), and the neutralised antigens are cleared. [Pg.22]

Figure 1.13. Schematic representation of an IgA molecule. Each IgA molecule comprises immunoglobulin molecules joined to each other via a J chain. The heavy chains possess three constant regions (Co1 Cce). The secretory chain (SC) is secreted by epithelial cells and binds to the IgA dimer via disulphide bonds (indicated by wriggly lines). Figure 1.13. Schematic representation of an IgA molecule. Each IgA molecule comprises immunoglobulin molecules joined to each other via a J chain. The heavy chains possess three constant regions (Co1 Cce). The secretory chain (SC) is secreted by epithelial cells and binds to the IgA dimer via disulphide bonds (indicated by wriggly lines).
Table II gives the temperature interval, the number of laboratories that Battino judges have published reliable solubility data, the number of experimental values used in the linear regression, the linear regression standard deviation at the midpoint temperature, and the temperature of minimum mole fraction solubility (maximum value of Henry s constant) at one atmosphere partial pressure of the gas. For all of the gases except oxygen only a three constant equation was used. Table II gives the temperature interval, the number of laboratories that Battino judges have published reliable solubility data, the number of experimental values used in the linear regression, the linear regression standard deviation at the midpoint temperature, and the temperature of minimum mole fraction solubility (maximum value of Henry s constant) at one atmosphere partial pressure of the gas. For all of the gases except oxygen only a three constant equation was used.
The temperature of minimum mole fraction solubility at one atmosphere gas partial pressure was calculated from the three constant equation. The differentiation of equation (2) with respect to temperature gives Tm n = 100 A2/A3. The values that fall outside the temperature range of the experimental data used in the regression must be looked on as only tentative values of the temperature of minimum solubility. [Pg.515]


See other pages where Three-constant is mentioned: [Pg.365]    [Pg.1256]    [Pg.174]    [Pg.301]    [Pg.125]    [Pg.226]    [Pg.351]    [Pg.552]    [Pg.148]    [Pg.140]    [Pg.160]    [Pg.426]    [Pg.451]    [Pg.460]    [Pg.468]    [Pg.382]    [Pg.31]    [Pg.20]    [Pg.84]    [Pg.514]    [Pg.519]   
See also in sourсe #XX -- [ Pg.103 ]




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