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Rates remarkable

Date of occurrence IPIant Affected safety omponent Spill rate Remarks... [Pg.201]

The power input per unit mass of fluid is greater for a dissolution volume of 500 mL than for 900 mL, at a given stirring rate. Remarkably, s calculated for laminar conditions (p = 0.5) employing 500 mL of dissolution medium (not plotted) results in approximately the same hydrodynamic effectiveness as when turbulent conditions are assumed (p = 1.0) for a dissolution volume of 900 mL (10). This implies... [Pg.134]

After five cycles of selection and ampHfication, a population of single-stranded DNAs was enriched that catalyzed the Pb +-dependent cleavage at the ribose residue. This intramolecular cleavage activity was transformed into an inter-molecular reaction by separating the 38-nucleotide long catalytic domain from the 21-mer substrate which was cleaved specifically and with high turnover rates. Remarkably, the deoxyribozyme can perform well only with the special DNA/RNA chimeric oHgonucleotide substrate and cannot cleave a pure RNA substrate of the same sequence. [Pg.123]

Owing to the dependence of the state space where the slow dynamics evolves on the large flow rates (Remark 3.1), the fast-controller design must precede the slow-controller design. [Pg.43]

Table IX shows the results of the reaction with Cu -TSM in methanol solvent 41) together with the data obtained with Schiff base complexes by Frostin-Rio et al. (46). The reaction rate and the product distribution in the Schiff base complex systems are very dependent on the solvent and on the base added. With Cu -TSM, DTBP was oxidized to DPQ selectively. The addition of base into the Cu -TSM system accelerates the reaction rate remarkably but does not affect the high selectivity. Table IX shows the results of the reaction with Cu -TSM in methanol solvent 41) together with the data obtained with Schiff base complexes by Frostin-Rio et al. (46). The reaction rate and the product distribution in the Schiff base complex systems are very dependent on the solvent and on the base added. With Cu -TSM, DTBP was oxidized to DPQ selectively. The addition of base into the Cu -TSM system accelerates the reaction rate remarkably but does not affect the high selectivity.
Molecular sieve 3 A (MS3A) was also used by Lin et al. for the aerobic oxidation of alcohols in ionic liquid (Scheme 14.32) [30]. It seems that the molecular sieve 3 A serves as a heterogeneous Brpnsted base to enhance the reaction rate remarkably. With TEMPO-IL and the use of MS3A, the catalytic system could easily be recycled and reused three times without loss in its activity. [Pg.376]

Compounds Chemical structure Ions used for quanti-fication (m/z) Recovery rate (%) Remarks... [Pg.268]

The aggregation number also plays an important role in the total rate of the adsorption process from micellar solutions. The presence of dimers, which are assumed not to adsorb, increases the adsorption rate remarkably, although only 10% of the surfactant is aggregated in dimers (Fig. 4.14). [Pg.128]

In the discussion of the adsorption kinetics of micellar solutions, different micelle kinetics mechanisms are taken into account, such as formation/dissolution or stepwise aggregation/disaggregation (Dushkin Ivanov 1991). It is clear that the presence of micelles in the solution influences the adsorption rate remarkably. Under certain conditions, the aggregation number, micelle concentration, and the rate constant of micelle kinetics become the rate controlling parameters of the whole adsorption process. Models, which consider solubilisation effects in surfactant systems, do not yet exist. [Pg.135]

Deposition Precursor Gas pressure -f/b(V) Power density Rate Remarks References... [Pg.625]

Controlling Mechanism Controlling Term Rate Remarks... [Pg.876]

Iron carbonyls are also active catalysts. However, more efiFective are cobalt catalysts [375, 541-543] and even at 180 C a high reaction rate is observed. Addition of iodine increases the reaction rate remarkably. [Pg.114]

The effect of inert gas flow rate on the gas separation performance is presented in Table 4.14. Decrease in flow rate remarkably decreases the flux without significant change in the selectivity. When the non-volatile by-products are not removed quickly enough ditring pyrolysis, they can presumably degrade further and leave carbon deposits on the siuface of the carbon, which can reduce the permeant gas flux. [Pg.71]

Substituent effects on proton transfer to water of protonated aniline derivatives have been investigated by picosecond time-resolved fluorescence measurements [92-94]. Protonated aniline in the Sj state releases proton to water with a rate constant of 1.3 x 10 °s in aqueous solution. The proton transfer rate is significantly increased by substitution of cyano group at the meta-position k = 3.7 x 10"s ). In contrast, the methoxy substitution at the meta-position decreases the rate remarkably... [Pg.53]


See other pages where Rates remarkable is mentioned: [Pg.92]    [Pg.438]    [Pg.676]    [Pg.546]    [Pg.876]    [Pg.125]    [Pg.151]    [Pg.152]    [Pg.645]    [Pg.650]    [Pg.651]    [Pg.76]   
See also in sourсe #XX -- [ Pg.287 , Pg.334 , Pg.369 ]




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