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Basis complete

In its extreme form the ergodic hypothesis is clearly untenable. Only probability statements can be made in statistical mechanics and these have nothing to do with sequences in time [117]. Not surprisingly, a totally convincing proof of the ergodic theorem in its many guises has not been formulated. The current concensus still is that an axiomatic basis, completely independent of ergodic theory should be chosen [115] for the construction of statistical mechanics. [Pg.444]

After start-up, the system should be checked at least weekly, with some observations, notably in the early phases, requiring daily monitoring. Information such as ground-water levels, extraction and injection flow rates, groundwater electron acceptor concentrations, nutrient concentrations, pH, and conductivity should be recorded at least on a weekly basis. Complete records of rates, concentrations, electrical usage, and other operational data can be invaluable when evaluating operational efficiency or documenting unit costs. [Pg.287]

In addition to the compounds of Table 7 this type is also reported for Li2PdFe (164). Quite likely the compound Li2TiF6, that Cox (73) could not index on a hexagonal basis completely, also belongs to this t5q>e. Lattice constants of both compounds have not been published, however. [Pg.15]

A comparison of fatty acid and ketone body levels in the bloodstream may overemphasize the importance of the latter compounds as energy sources for the following reasons. First, fatty acid molecules contain 16 to IS carbons, whereas ketone bodies contain only four carbons Therefore, the weight of 1 ntmol of fatty acid is several times that of 1 mmol of p-hydnoxybutyrate. Second, fatty adds are highly reduced, alkane-like structures, whereas ketone bodies are partially oxidized. This means that on a per-weight basis complete oxidation of faltj acids yields more energy than complete oxidation of ketone bodies. [Pg.238]

Not only were few users (and consultants) aware that regulation by NESHAP is a multi-stage process over time even fewer persons were aware that a subsequent stage of regulation could be done on a basis completely different than was done with the 1994 NESHAP. [Pg.47]

Each Lewis-type Tabc must therefore be complemented by two remaining three-center awttbond NBOs (labeled 3C in NBO output) to conserve basis completeness and orthonormality. In many cases, these valence antibond NBOs (as optimally chosen by the NBO program) correspond to two-center re-type Tabc " and three-center A-type Tabc linear combinations (cf. W B, p. 306ff),... [Pg.81]

Our spin basis is - in contrast to the orbital basis - complete. Therefore, for pure spin operators we have none of the problems associated with the representation of product operators discussed in Section 1.5, and the usual first-quantization commutation relations hold also for the second-quantization spin operators. For example, we may easily verify that the commutator between the second-quantization raising and lowering curators is the same as in first quantization ... [Pg.39]

The rate at which the catalyst is lost or degrades has a major influence on the design. If degradation is rapid, the catalyst needs to be regenerated or replaced on a continuous basis. In addition to the cost implications, there are also environmental implications, since the lost or degraded catalyst represents waste. While it is often possible to recover useful materials from degraded catalyst and to recycle those materials in the manufacture of new catalyst, this still inevitably creates waste, since the recovery of material can never be complete. [Pg.49]

Whether parallel operations, larger or smaller items of equipment, and intermediate storage should be used can only be judged on the basis of economic tradeoffs. However, this is still not the complete picture as far as the batch process tradeoffs are concerned. So far the batch size has not been varied. Batch size can be varied as a function of cycle time. Overall, the variables are... [Pg.251]

The Supplement B (reference) contains a description of the process to render an automatic construction of mathematical models with the application of electronic computer. The research work of the Institute of the applied mathematics of The Academy of Sciences ( Ukraine) was assumed as a basis for the Supplement. The prepared mathematical model provides the possibility to spare strength and to save money, usually spent for the development of the mathematical models of each separate enterprise. The model provides the possibility to execute the works standard forms and records for the non-destructive inspection in complete correspondence with the requirements of the Standard. [Pg.26]

Once the feasibility of using real time X-ray as an inspection method was established, it was decided to proceed with the design of a system equally suited for control of incoming frozen fish blocks and for developing inspection procedures. These inspection procedures are, when completed, to be the basis of the inspection standards for the complete concern. [Pg.589]

Having done this we solve the Scln-ddinger equation for the molecule by diagonalizing the Hamiltonian matrix in a complete set of known basis fiinctions. We choose the basis functions so that they transfonn according to the irreducible representations of the synnnetry group. [Pg.140]

It would appear that identical particle pemuitation groups are not of help in providing distinguishing syimnetry labels on molecular energy levels as are the other groups we have considered. However, they do provide very usefiil restrictions on the way we can build up the complete molecular wavefiinction from basis fiinctions. Molecular wavefiinctions are usually built up from basis fiinctions that are products of electronic and nuclear parts. Each of these parts is fiirther built up from products of separate uncoupled coordinate (or orbital) and spin basis fiinctions. Wlien we combine these separate fiinctions, the final overall product states must confonn to the pemuitation syimnetry mles that we stated above. This leads to restrictions in the way that we can combine the uncoupled basis fiinctions. [Pg.173]

The treatment of equilibrium solvation effects in condensed-phase kmetics on the basis of TST has a long history and the literature on this topic is extensive. As the basic ideas can be found m most physical chemistry textbooks and excellent reviews and monographs on more advanced aspects are available (see, for example, the recent review article by Tnihlar et al [6] and references therein), the following presentation will be brief and far from providing a complete picture. [Pg.832]

Note that equation (A3.11.1881 includes a quantum mechanical trace, which implies a sum over states. The states used for this evaluation are arbitrary as long as they form a complete set and many choices have been considered in recent work. Much of this work has been based on wavepackets [46] or grid point basis frmctions [47]. [Pg.993]

The ability to assign a group of resonance states, as required for mode-specific decomposition, implies that the complete Hamiltonian for these states is well approxmiated by a zero-order Hamiltonian with eigenfunctions [M]. The ( ). are product fiinctions of a zero-order orthogonal basis for the reactant molecule and the quantity m. represents the quantum numbers defining ( ).. The wavefimctions / for the compound state resonances are given by... [Pg.1030]

A diagrannnatic approach that can unify the theory underlymg these many spectroscopies is presented. The most complete theoretical treatment is achieved by applying statistical quantum mechanics in the fonn of the time evolution of the light/matter density operator. (It is recoimnended that anyone interested in advanced study of this topic should familiarize themselves with density operator fonnalism [8, 9, 10, H and f2]. Most books on nonlinear optics [13,14, f5,16 and 17] and nonlinear optical spectroscopy [18,19] treat this in much detail.) Once the density operator is known at any time and position within a material, its matrix in the eigenstate basis set of the constituents (usually molecules) can be detennined. The ensemble averaged electrical polarization, P, is then obtained—tlie centrepiece of all spectroscopies based on the electric component of the EM field. [Pg.1180]

E.( ), possesses a complete set of eigenfiinctions, the matrix F whose dimension Mis equal to the number of atomic basis orbitals, has M eigenvalues e. and M eigenvectors whose elements are the. . Thus, there are... [Pg.2170]

State basis in the molecule consists of more than one component. This situation also characterizes the conical intersections between potential surfaces, as already mentioned. In Section V, we show how an important theorem, originally due to Baer [72], and subsequently used in several equivalent forms, gives some new insight to the nature and source of these YM fields in a molecular (and perhaps also in a particle field) context. What the above theorem shows is that it is the truncation of the BO set that leads to the YM fields, whereas for a complete BO set the field is inoperative for molecular vector potentials. [Pg.101]

Attention is directed to a previous discussion of what happens when the electronic basis is extended to the complete Hilbert space, [79] p. 60 especially Eqs. (2.17)-(2.18). It is shown there that in that event the full symmeti of the invariance group is regained (in effect, through the cancellation of the... [Pg.149]


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See also in sourсe #XX -- [ Pg.119 ]




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Complete basis limit

Complete basis set

Complete basis set extrapolation

Complete basis set limit

Complete basis set method

Complete basis set models

Completely diabatic basis

Expansion in a Complete Basis Set

Extrapolations to the complete-basis-set

Extrapolations to the complete-basis-set limit

Finite basis functions completeness

The Complete Basis Set Extrapolation

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