Recombination termination

They seem to interfere, by slow reactions, with propagating macroperoxy radicals secondly, they might be capable of reducing the number of initiated chain reactions by fast inhibition of peracid radicals produced by non-terminating recombination of primary macroperoxy radicals within initiated radical pairs. 

Termination recombination of two radicals or reactions yielding stabilized radicals no longer capable of propagating chain reactions. 

Remark. The calculated values of average molar masses do not take into account the possible dimerization of chains by termination (recombination) when such a dimerization occurs, the average molar masses must be multiplied by 2. 

Termination reaction with vinyl acetate is nearly exclusively by disproportionation (216), although there are reports that recombination increases in... 

Covers for the battery designs in Figures 1 and 2 are typically molded from materials identical to that of the respective case, and vent plugs are frequentiy made of molded polypropylene. Other combinations are possible, eg, containers molded of polyethylene or polypropylene may be mated with covers of high impact mbber for use in industrial batteries. After the cover is fitted over the terminal post, it is sealed onto the case. The cover is heat bonded to the case, if it is plastic it is sealed with an epoxy resin or other adhesive, if it is vulcanized mbber. Vent caps are usually inserted into the cover s acid fiU holes to faciHtate water addition and safety vent gasses, except for nonaccessible maintenance-free or recombinant batteries. In nonaccessible batteries, the vent is fabricated as part of the cover. 

If other possible termination steps are considered, then it can be inferred that recombination or disproportionation of ethyl radicals, c,H5 is more likely than recombination of C and. Step 5... 

In anionic polymerization, as in carbonium ion polymerization, termination does not involve bimolecular reaction between two growing chains. Neither can recombination of ions lead to termination, since a carbon-metal bond is highly polar, in the case of alkali metals frequently completely ionized, and in every case very reactive. The termination step leading to the formation of a terminal C=C double bond is not too probable. This reaction involves the formation of a metal hydride, and this does not contribute greatly to the driving force. Consequently, such a termination is observed at higher temperatures only and it is probably more common in coordination polymerization where the metals involved are less electropositive. 

The protein contains an N-terminal signal peptide of 17 amino acid residues for secretion. The luminescence reaction of coelenterazine catalyzed by the recombinant luciferase shows a luminescence emission maximum at 485 nm, whereas the luminescence catalyzed by the native luciferase shows a maximum at 480 nm. 

Finally, two termination steps are considered a spontaneous termination with acid expulsion and restoration of a terminal 2,3-dihydro- or furan ring and a recombination of the growing ion pair to give a tetrahydro- or a 2,3-dihydrofuran ester. 

Two NKxr splice variants have been identified (Table 3). A NKxr splice variant having a very short C-terminal intracellular tail (7 instead of 96 amino acids), which has been expressed and characterized in recombinant systems (Fig. 1), was found to be expressed at higher level than the long isoform in breast cancer cells. As compared to the long receptor, the short NKxr isoform is less subjected to desensitization and internalization... 

A second approach has been to use an unsymmetrical initiator which allows the two radicals of interest to be generated simultaneously in equimolar amounts.175 In this case, analysis of the cage recombination products provides information on cross termination uncomplicated by homotermination. Analysis of products of the encounter reaction can also give information on the relative importance of cross and homotermination. However, copolymerization of unsaturated products can cause severe analytical problems. 

When the initiation and termination reactions are the reverse of one another, the kinetic form is usually simpler than when the two are independent. Also, the transition-state composition follows directly from the rate law, which is why the term well-behaved is applied. Imagine, for example, that the termination step in the system most recently presented was the recombination of two sulfate radical ions rather than Eq. (8-38) ... 

The electrophilicity and therefore the stability of the cationic chain ends are relatively limited, because, on the one hand, the electrophilicity must be large enough to aid a nucleophilic attack by the monomer, but on the other hand, not so large that a chain termination occurs due to recombination with the counterion. For this reason the stability of the cationic chain ends is a function of ... 

Bhawe (14) has simulated the periodic operation of a photo-chemically induced free-radical polymerization which has both monomer and solvent transfer steps and a recombination termination reaction. An increase of 50% in the value of Dp was observed over and above the expected value of 2.0. An interesting feature of this work is that when very short period oscillations were employed, virtually time-invariant products were predicted. 

The enantioconvergent biohydrolysis of m-chlorostyrene oxide (Figure 6.68) in the presence of a recombinant S. tuberosum EH afforded the corresponding (JJ)-diol in a nearly quantitative yield [187]. The (S)-epoxide was attacked at the benzylic (more substituted) carbon whereas the (R)-epoxide was attacked at the terminal (less substituted) carbon. 

Rituximab is a recombinant mouse/human chimeric monoclonal antibody whose in vitro activity varies with the number of terminal galactose moieties glycosylated to the peptide backbone at residue asparagine 301 [8]. The ability to monitor the levels of each discrete species present would allow the manufacturing process to... 

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