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Influence of localization and

Wolff, G. T., Korsog, P. E., Stroup, D. P., Ruthkosky, M. S., and Morrissey, M. L. (1985) The influence of local and regional sources on the concentration of inhalable particulate matter in south-eastern Michigan, Atmos. Environ. 19, 305-313. [Pg.1174]

Figure 13 The dependence of probability of the reaction proceeding on the position of active center in chain on different chain-solvent influence. The active center after the reaction proceeding has a lower local rigidity than the initial chain a = influence of solvent on deflection of reacted and unreacted place of the same chain b = influence of solvent on deflection is compensated by the influence of the local rigidity c influences of solvent and local rigidities on deflection are equal, but have opposite directions of action, d = influence of solvent on the deflection is stronger than the influence of the local rigidity. Figure 13 The dependence of probability of the reaction proceeding on the position of active center in chain on different chain-solvent influence. The active center after the reaction proceeding has a lower local rigidity than the initial chain a = influence of solvent on deflection of reacted and unreacted place of the same chain b = influence of solvent on deflection is compensated by the influence of the local rigidity c influences of solvent and local rigidities on deflection are equal, but have opposite directions of action, d = influence of solvent on the deflection is stronger than the influence of the local rigidity.
There have been many papers reporting studies on the influence of structure and conditions of the medium. Specifically, the kinetic behavior of enzymatic reactions in two-phase media was probed [7,25,27,63]. The reaction localization and the interaction between mass transfer and metabolism in compartmentalized media are interesting phenomena. Their study in the laboratory are useful for optimizing the operating conditions of bioreactors in a preparative scale. In addition, they also help to understand better the behavior of enzymatic systems in vivo. [Pg.568]

Styrikovich, M. A., Z. L. Miropol skii, and V. V. Eva, 1963, The Influence of Local Raised Heat Fluxes along the Length of a Channel on the Boiling Crisis, Sov. Phys. Dokl 7.597-599. (5)... [Pg.554]

On the submicron scale, the current distribution is determined by the diffusive transport of metal ion and additives under the influence of local conditions at the interface. Transport of additives in solution may be non-locally controlled if they are consumed at a mass-transfer limited rate at the deposit surface. The diffusion of additives in solution must then be solved simultaneously with the flux of reactive ion. Diffusive transport of inhibitors forms the basis for leveling [144-147] where a diffusion-limited inhibitor reduces the current density on protrusions. West has treated the theory of filling based on leveling alone [148], In his model, the controlling dimensionless groups are equivalent to and D divided by the trench aspect ratio. They determine the ranges of concentration within which filling can be achieved. [Pg.185]

However, another study concluded that the changes of the hydrogen-bond stability may be important in biological processes. For these, the influence of local electric fields created by Li+, Na+, and Mg2+ ions on the properties and reactivity of hydrogen bonds in HF and HC1 dimer has been carried out by means of ab initio self-consistent field (SCF) method [33]. A few years later, the effect of intensity and vector direction of the external electric field on activation barriers of unimole-cular reactions were studied using the semiempirical MINDO/3 method [34]. However, both semiempirical and ab initio calculations were performed to study the multiplicity change for carbene-like systems in external electric fields of different configurations (carbene and silylene) and the factor that determines the multiplicity and hence the reactivity of carbene-like structures is the nonuniformity of the field [35]. [Pg.368]

The final column presents the radius of 50% mortality from fallout 1 hour after the explosion. Of all of the threats described, fallout is the hardest to predict because of the influence of local, regional, or even global weather patterns. The mushroom cloud can rise into the atmosphere as far as 80,000 feet, where wind and rain influence the time and location for fallout to occur.2 Individuals several miles from ground zero and well outside any radius presented in Table 5.1 can receive significant or even lethal radiation doses from fallout. However, while the air blast, thermal burns, and initial radiation are threats in all directions, fallout is a threat downwind from ground zero. Wind speed and direction vary at different altitudes, and it is safest to assume that fallout is a potential threat in all directions from ground zero. Individuals outside the blast zone generally will have several minutes to an hour or more to seek shelter before fallout arrives. [Pg.136]

Before doing so, we briefly examine the influence of conformation and flexibility. Indeed, formation of succinimide is limited in proteins due to conformational constraints, such that the optimal value of the and ip angles (Sect. 6.1.2) around the aspartic acid and asparagine residues should be +120° and -120°, respectively [99], These constraints often interfere with the reactivity of aspartic acid residues in proteins, but they can be alleviated to some extent by local backbone flexibility when it allows the reacting groups to approach each other and, so, favors the intramolecular reactions depicted in Fig. 6.27. When compared to the same sequence in more-flexible random coils, elements of well-formed secondary structure, especially a-helices and 13-turns, markedly reduce the rate of succinimide formation and other intramolecular reactions [90][100],... [Pg.316]

Fig. 9. Influence of local temperature T and varying catalyst structure on the CO oxidation effectiveness factor . Each Pt/y-Al203 catalyst was reconstructed by packing of y-Al203 particles of two different sizes with small-to-large particles number 16. Small particles size d = 1 pm was kept constant, while large particles size <72 and particles fractional overlap (level of sintering) were varied. Gas concentrations the same as in Fig. 8 (Koci et al., 2007a). Fig. 9. Influence of local temperature T and varying catalyst structure on the CO oxidation effectiveness factor . Each Pt/y-Al203 catalyst was reconstructed by packing of y-Al203 particles of two different sizes with small-to-large particles number 16. Small particles size d = 1 pm was kept constant, while large particles size <72 and particles fractional overlap (level of sintering) were varied. Gas concentrations the same as in Fig. 8 (Koci et al., 2007a).
So far, we have tacitly assumed that the stresses were applied externally. However, stresses which are induced by local changes in component concentrations and the corresponding changes in the lattice parameters during transport and reaction are equally important. These self-stresses can strongly influence the course of a solid state reaction. Similarly, coherent, semicoherent, and even incoherent interfaces during heterogeneous solid state reactions are sources of (local and nonlocal) stress. The... [Pg.331]

The monitoring network in EMB compared to those established in Central and North Europe or even with the Western Mediterranean Basin (e.g. Spain) is rather insufficient. Particularly there is a lack of data on continuous or long-term monitoring of the chemical composition of particulate matter [12], For some substances (e.g. carbonaceous aerosol), the variability is expected to be much larger than can be resolved by integrating the available measurements and the research studies need to be supported by assessment of the local scale variability. In order to understand the temporal evolution (trends) there is also a particular need for aerosol measurements at additional sites with little influence from local and regional emission sources. [Pg.222]

The influence of temperature and strain rate can be well represented by Eyring s law physical aging leads to an increase of the yield stress and a decrease of ductility the yield stress increases with hydrostatic pressure, and decreases with plasticization effect. Furthermore, it has been demonstrated that constant strain rate. Structure-property relationships display similar trends e.g., chain stiffness through a Tg increase and yielding is favored by the existence of mechanically active relaxations due to local molecular motions (fi relaxation). [Pg.394]

Poomima, C. S. and Dean, P. M. (1995) Hydration in drag design. 2. Influence of local site surface shape on water binding. J. Comput. Aided Mol. Des. 9,513-520. [Pg.90]

The peculiarities of classical localized coordination bonds (two-electron and two-center [1,4,5]) are displayed most clearly in MCC. Mostly, the elements of the first period of the Periodic Table (C, N, O) participate as electron donors in the formation of such bonds. In complexes of this type, the role of Ji-dative interactions is significant. These interactions are revealed in coordination compounds of ligands containing the elements of the next periods as donor centers (P, As, Sb S, Se, Te Cl, Br, I). We note that the examined complexes are the most successful objects to study the influence of ligand and metal nature on the character of the coordination bond, since, in this case, the factors which could distort this influence (chelate, macrocyclic, and other effects [117,135]) are absent. [Pg.14]

To develop the kinetic equations in condensed phases the master equation must be formulated. In Section 3 the master equation is used to generate the kinetic equations for local concentrations and pair correlation functions. The latter set of equations permits consideration of history of formation of the local solid structure as well as its influence on the subsequent elementary stages. The many-body problem and closing procedure for kinetic equations are discussed. The influence of fast and slow stages on a closed system of equations is demonstrated. The multistage character of the kinetic processes in condensed phase creates a problem of self-consistency in describing the dynamics of elementary stages and the equilibrium state of the condensed system. This problem is solved within the framework of a lattice-gas model description of the condensed phases. [Pg.351]


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