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Redistribution preservatives

When there is no correlation between E and —AH, e.g., if —AH is independent of coverage, then redistribution preserves a uniform concentration over the whole surface at all coverages. There will, therefore, be a group of sites having E = H in on which the act of adsorption always proceeds but the number of sites will decrease linearly with the total amount adsorbed (the usual assumption that sites are filled sequentially in terms of increasing E is retained) hence, to a good... [Pg.23]

Experiments of this kind have provided a great deal of evidence in favour of exocytotic release of vesicular noradrenaline. For example, by administering reserpine (which causes noradrenaline to leak out of the vesicles into the cytoplasm) together with an inhibitor of the enzyme monoamine oxidase (which will prevent metabolism of cytoplasmic noradrenaline), it is possible to redistribute the noradrenaline stored within nerve terminals because it leaks from the vesicles but is preserved within the neuronal cytoplasm. Under these conditions, the total amount of transmitter in the terminals is unchanged but impulse-evoked release rapidly diminishes. [Pg.93]

Two invariance postulates are established. First, the deviations of prices from values sum up to zero, which means that total prices (240) are equal to total values (240). Second total money profits (60) are equal to total sin-plus value (60). Although for individual departments there are deviations of prices from values, and profits from surplus value, in the economy as a whole value categories are preserved. Marx defends his value theory using a macroeconomic solution, in which profits are determined by surplus value, and all that is required is a redistribution of surplus value between departments of production. [Pg.92]

According to the theory of constitutional chemistry, a chemical reaction is interpreted as a redistribution of the valence electrons i.e., as the transformation of an EM into an isomeric EM (in which both the atomic cores and the valence electrons are preserved). The difference between the final E (End) and the initial B (Begining) BE-matrices is called the R-matrix (Reaction matrix) ... [Pg.434]

The fixation conditions used to prepare cells for antibody application are assumed to preserve the distributions of the protein(s) being examined (2). Soluble proteins can be redistributed into inappropriate locations and... [Pg.265]

B. Perfusion of the brain is preserved when hemorrhage occurs. Thus, a greater proportion of the initial dose of anesthetic should appear in the brain, and a dose smaller than what is needed for a normovolemic patient is all that is required. Also, since flow to tissues associated with redistribution of the drug and termination of anesthesia is compromised, anesthesia should be deep and extended. Titrate this patient to a safe level of effect. While poor perfusion of the liver may reduce the exposure of drugs to metabolic enzymes, most intravenous anesthetics rely very little on hepatic clearance to terminate the anesthetic effect when a single bolus is administered. Furthermore, the question implies a direct influence of blood pressure on the efficiency of hepatic enzymes, and there is no evidence to support such a contention. Option C is not true. The opposite of option D is true. No evidence exists that binding of anesthetics is altered by these conditions. [Pg.308]

Electron density distribution in the molecules presides over spin preservation preventing the redistribution of spin to other electrons in the system in form of polarization. [Pg.28]

After cis-addition of a monomer the geometry of an active center is reconstructed with a change of the positions of the vacancy and the alkyl. From the estimation of the contribution of the atomic orbitals to the molecular orbital localized at the Ti—C bond, it was concluded that the metal-alkyl bond is preserved during the reaction route. Cossee regarded the similar reactions to the concerted-type reactions which are characterized by synchronous redistribution of the electron density between dissociated and newly formed bonds which accounts for the low activation energies of these reactions. [Pg.93]

The fixation conditions used to prepare cells for antibody application are assumed to preserve the distributions of the protein(s) being examined (2). Soluble proteins can be redistributed into inappropriate locations and can be differentially extracted from native locations during the permeabilization and fixation of the cells before antibody application (3,4)- Further, no cell aggregation or alteration of the intracellular antigenicity should occur in the permeabilization/fixation treatment. The fixation/stain methodology, with and without permeabilization, can be accomplished in various ways depending on the exact site of the organelle or cell constituent to be stained. [Pg.234]

This is not the case with fixed-angle and vertical rotors, where the centrifuge tube angle is fixed and determined by the rotor design. Therefore, the gradient and sample redistribute in the tubes, as shown in Figure 13.4. This redistribution process takes place at low velocity (0-1000 rpm), to preserve the gradient, and... [Pg.254]

The ECD process, by its nature, is a very rapid process and bond dissociation occurs faster than the redistribution of intramolecular vibrational energy that occurs with CID. This explains the dissociation of the strong N-C, amine bonds in the presence of the weaker C—N amide bonds in peptides and proteins.93,94 Consequently, any labile PTMs (e.g., phosphorylation, sulfation, 7-carboxylation, N- and O-glycosylation) are preserved and may be unequivocally located in the peptide/protein sequence. See also discussion in Section 9.10.3.2.6 on the use of ECD/ETD and CID/IRMPD for protein/peptide sequencing, and Table 4. [Pg.354]

Reduction-oxidation episodes in soils cause appreciable redistribution of elements as some minerals dissolve and new minerals precipitate. It is unlikely that the surface chemical properties of the soil are preserved through the reduction and oxidation processes. In particular, freshly precipitated Fe and Mn oxides seem to provide recently reoxidized soils with new reactive surfaces for heavy metal and oiganic sorption. [Pg.244]


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See also in sourсe #XX -- [ Pg.311 ]




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