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SS formalism

In the SS formalism, we target only one function IIP), and hence, the coefficients c t have no k dependence, and thus, we drop the state index k. In the SU formalism, all Wic) states are targeted but the equations for obtaining the amplitudes with whose connectedness we are concerned have no dependence on c. ... [Pg.32]

We developed expressions for EOM-CCSD-PCM in the SS formalism, and a series of approximations to reduce the considerable computational cost of this approach. Christiansen and Mikkelsen originally developed the LR formalism for the CCSD wave function in solution for a simple continuum solvation model. Later, they extended it to their flavour of explicit polarizable solvation model. Cammi has also presented several interesting developments in this research area, including a rederivation of the LR-CCSD expressions for PCM, and we presented the first implementation of the method. Other examples of CC methods combined with (non-)polarizable solvation models [e.g., fixed point charges) are also available in the literature. ... [Pg.201]

The ground state free energy expression in eqn (1.2) is common to both LR and SS formalisms. They diverge, however, for excited states. For SS, a free energy functional can be written for the kT-th electronic state " ... [Pg.204]

Fig.l Flow chart for the solution of the EOM-CCSD-PCM equations in the SS formalism (left) and LR formalism (right). See text for details. [Pg.206]

We now present a brief critique of the other two SS formalisms [33, 34] which bear kinship with the SSMR formulation being dis-... [Pg.116]

From an energetic point of view, the bands at higher wavenumbers can be assigned to the Ss rings. However, the intensities were found as ca. 0.65 1 (pure infected) instead of 2.8 1 which would be expected from the natural abundance of the isotopomers. These discrepancies were solved by applying the mathematical formalism utilized in the treatment of intramolecular Fermi resonance (see, e.g., [132]). Accordingly, in the natural crystal we have to deal with vibrational coupling between isotopomers in the primitive cell of the crystal [109]. [Pg.61]

The coefficients n, have to obey the condition n, f, imposed by Poisson s electrostatic equation, as pointed out by Stewart (1977). The radial dependence of the multipole density deformation functions may be related to the products of atomic orbitals in the quantum-mechanical electron density formalism of Eq. (3.7). The ss, sp, and pp type orbital products lead, according to the rules of multiplication of spherical harmonic functions (appendix E), to monopolar, dipolar, and quadrupolar functions, as illustrated in Fig. 3.6. The 2s and 2p hydrogenic orbitals contain, as highest power of r, an exponential multiplied by the first power of r, as in Eq. (3.33). This suggests n, = 2 for all three types of product functions of first-row atoms (Hansen and Coppens 1978). [Pg.65]

We must, finally, mention the SS approaches that employ a genuine MR SU CC formalism, yet focus on one state at a time by neglecting the coupling with other states. Such an approach was pursued earlier by Kucharski and Bartlett [98] and, most recently by Mukherjee and collaborators [99,100], who distinguish the relaxed and nonrelaxed versions of their formalism. [Pg.27]

For the no reaction state ass = a0, the relaxation time given by eqn (8.10) is simply equal to the residence time. In terms of the eigenvalue, we have A = - l/tres, which is negative. The stationary state is always stable, irrespective of a0 and kl. Chemistry makes no contribution (formally we have l/tch,ss = 0, so the chemical time goes to infinity) the perturbation of a does not introduce any B to the system, so no reaction is initiated. The recovery of the stationary state is achieved only by the inflow and outflow. [Pg.214]

Equations (3.105)-(3.107) point out the existence of three different polarization causes. So, 7km is a kinetically controlled current which is independent of the diffusion coefficient and of the geometry of the diffusion field, i.e., it is a pure kinetic current. The other two currents have a diffusive character, and, therefore, depend on the geometry of the diffusion field. I((((s corresponds to the maximum current achieved for very negative potentials and I N is a current controlled by diffusion and by the applied potential which has no physical meaning since it exceeds the limiting diffusion current 7 ss when the applied potential is lower than the formal potential (E < Ef"). This behavior is indicated by Oldham in the case of spherical microelectrodes [15, 20, 25]. [Pg.167]

Fig. 7.21 (continued) reverse scans. EE SS = —2.6V (vs. Ag), sw = 25mV, A s = 10mV. The values of the kinetic parameters and formal potential extracted in each case are given in Table 7.2. Test solution 2 mM 2-methyl-2-nitropropane, 0.1 M tetra-n-butylammonium perchlorate in acetonitrile. Reproduced from [30] with permission... [Pg.498]

The NPD functions for characterizing dispersive mixing in internal batch mixers were developed by Manas-Zloczower et al. (57-60) and for SSEs by Manas-Zloczower and Tadmor (61).They were formalized and generalized by Tadmor (62,63). [Pg.372]

Guanine, with a formal potential at pH 7 of 1.3 V vs. normal hydrogen electrode (NHE) (1.06 V vs. saturated calomel electrode (SCE)), is the most easily oxidized of the four DNA bases/331 The other bases have formal potentials up to 0.5 V more positive. Detecting nucleic acids by electrochemical oxidation depends on structure, with double-stranded (ds) DNA giving only trace oxidation peaks at best and single-stranded (ss) DNA giving irreversible oxidation peaks at about 1.0-1.2 V vs. SCE on carbon electrodes. [Pg.3]

Permutations of the Symmetrical Group Ss and Formal Mechanisms of Regular Permutational Isomerizations of Trigonal Bipyramidal... [Pg.40]

The most computationally significant aspect of the matrix method is that the inverse reflectivity matrix R always exists for any physically meaningful enclosure problem. More precisely R always exists provided that K 0. For a transparent medium, R exists provided that there formally exists at least one surface zone A, such that c, 0. An important computational corollary of this statement for transparent media is that the matrix [Al — ss] is always singular and demonstrates... [Pg.25]

This is our new equation for the single-site density distributions which generalizes the LMBW equation (2) to polyatomic fluids, below called a site-site LMBW (SS-LMBW) equation [47]. As distinct from the site-site DFT approaches [20-24], the SS-LMBW equation properly treats the short- and long-range correlations coupled in the site-site direct correlation function Cy (r2, rs). The SS-LMBW theory also differs from the RISM approach to inhomogeneous polyatomic fluids derived within the density functional formalism by Chandler et al. [25,26]. In Equations (3.7) and (3.13) of Ref. [26] for the site density profiles p (r), the orientational averaging with the intramolecular matrix (r 12)... [Pg.106]

Table 6 Weight Lx)ss (WL) of Formalized Cedar and Beech Blocks Due to Termite Attack After Forced-Feeding Tests with Coptotermes formosams for 9 Weeks and with Reticulitermes speratus for 2 or 4 Weeks... Table 6 Weight Lx)ss (WL) of Formalized Cedar and Beech Blocks Due to Termite Attack After Forced-Feeding Tests with Coptotermes formosams for 9 Weeks and with Reticulitermes speratus for 2 or 4 Weeks...

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See also in sourсe #XX -- [ Pg.116 ]




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