Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Extensive functions

The phenomenology described above can be applied to any thermodynamic extensive function, Yt, for a solution. The integral molar enthalpy, entropy and... [Pg.62]

Proteasome and RC subunits are subjected to a variety of post-translational modifications including phosphorylation, acetylation, myristoylation, and even O-glycosylation [136-140]. In yeast all seven a-subunits are acetylated as well as two yS-subunits. Since acetylation of the N-terminal threonine in an active j8-subunit would poison catalysis, it has been suggested that the propeptide extensions function to prevent acetylation [130]. Three members of the S4 ATPase subfamily (S4,... [Pg.235]

In unfilled rubbers, which are not capable of strain-induced crystallization, the upturns on Mooney-Rivlin curves have shown to be absent 92 95). They disappear also in crystallizable rubbers at elevated temperatures and in the presence of solvents. On the other hand, the upturns do not appear for butadiene, nitrile and polyurethane rubbers if the limited chain extensibility function is introduced in the Mooney-Rivlin expression 97). Mark 92) has concluded that in the absence of selfreinforcement due to strain-induced crystallization or domains the rupture of the networks occurs long before the limited chain extensibility can be reached. [Pg.66]

If all Cu atoms occupy (0,0,0) sites,/Cu = 1, consequently r - 1, and we have the completely ordered / brass. The symmetry is broken when /Cu = 1/2 or t = 0, and thus P and f become indistinguishable. Other (normalized) order parameters are in use lattice dimension, density, magnetization, polarization, or some function that describes the orientation of the molecular axes. Since the order parameter is a normalized extensive function (or a specific function, as for example, the mole fraction) and we are dealing with either an open or a closed system (/>., constant chemical potential or constant number of particles), r can be a non-conserved or a conserved quantity. [Pg.299]

Less extensive functional testing might be warranted than when the code reviews, inspections, audits, and unit testing are not performed or not available for inspection. [Pg.56]

The extensive functionalization of natural oxazoles is such that infrared spectroscopy is not a useful method for initial detection of the moiety. Infrared values reported in the literature for oxazole alkaloids are listed in Table III. [Pg.306]

Arenes are attractive building blocks for the synthesis of complex carbocyclic species. In addition to being inexpensive and available in a variety of substitution patterns, they possess ring structures composed entirely of unsaturated carbons. Because of this unsaturation, they have the potential for extensive functionalization. However, the realization of this potential requires synthetic methods that overcome the energetic barrier associated with aromatic stabilization. [Pg.297]

The first law of thermodynamics is conservation of energy, which states that there exists an extensive function U = U(p, V,Ni called the... [Pg.522]

In the classical formulation, the second law of thermodynamics states that there exist an absolute scale for the temperature T and an extensive function 5(p, V, called the entropy, such that for an infinitesimal process in a closed system... [Pg.522]

In contrast to triorganosilyl anions, functionalized silyl anions have been studied less extensively. Functional groups reported so far are hydrogen, chlorine, amino, alkoxy, and carbonyl groups. In addition to these species, silacyclopentadienide anions are also described in this section. Theoretical studies on the effect of functional groups are described in Section... [Pg.16]

With all the requisite stereochemistry in place and no need for extensive functionalization, sugars are the logical starting material for the synthesis of carba-sugars. Moreover, they are generally inexpensive and stereochemically pure compounds. To illustrate this point the starting sugar will be identified in each synthesis, even if the synthesis is described from a more advanced... [Pg.371]

Preparation of a compound such as 3 is useful where extensive functionalization of a cyclic enone is required. In addition to 3, 4,4-... [Pg.208]

The preceding formulae are easily extended to the case in which the system is composed of many phases. Since the thermod3mamic potentials U, H, F, G, are extensive functions, we have, by virtue of (1.32)... [Pg.75]

The first and the second thermodynamic potentials, which are the extensive functions of the variables of state, can also be written as (28)... [Pg.311]

Now, G(T,p,N) is extensive function. However, it depends on only one extensive variable, N. Therefore, G must be a homogeneous function of degree 1 in N. That is decreasing/increasing the amount of material in a system by a scaling factor must increase the free energy by the same scaling factor... [Pg.145]

Finally, it is well known that systems cannot exist under conditions of ppT. Free energies must be extensive functions (or they cannot describe cookies, an important thermodynamic system, indeed ). None of the variables, ppT, are extensive. Therefore, any function which depends on ppT cannot, itself, be extensive. Mathematically, we cannot form a thermod3mamic function of ppT by Legendre transform... [Pg.146]

We can use this theorem to address extensive functions of extensive variables, which are obviously homogeneous functions of order 1 in these variables, for example, the expression... [Pg.28]

There are several potential ways of integrating the management extensions functionality into systems like those developed in IMPROVE. [Pg.406]


See other pages where Extensive functions is mentioned: [Pg.8]    [Pg.501]    [Pg.79]    [Pg.7]    [Pg.750]    [Pg.123]    [Pg.448]    [Pg.164]    [Pg.15]    [Pg.75]    [Pg.15]    [Pg.582]    [Pg.252]    [Pg.89]    [Pg.353]    [Pg.441]    [Pg.85]    [Pg.117]    [Pg.237]    [Pg.135]    [Pg.326]    [Pg.6]    [Pg.194]    [Pg.25]    [Pg.3]    [Pg.451]    [Pg.68]    [Pg.69]    [Pg.76]    [Pg.451]    [Pg.32]    [Pg.59]    [Pg.106]   
See also in sourсe #XX -- [ Pg.134 ]




SEARCH



© 2024 chempedia.info