In general, the higher the initiator concentration the lower the molecular weight, whereas high monomer concentrations increase molecular weight both when the initiator concentration is limiting and under conditions where a negative cooperative is operating, i.e., whenever the chain
transfer reaction is limited.
On the other hand, the last phosphodiester
transfer reaction that 1 described was more difficult chemically to do than the phosphodiester
transfer reactions catalyzed by the spliceosome.
In this case, the NMR analysis identified the formation of morpholine end groups arising from the attack of neighboring hydroxyl groups, which possibly correspond to the main chain
transfer reaction. Nevertheless, kinetic analysis showed that the reaction corresponded to a first-order process for the first 2 h: therefore, this evidence would suggest a pseudo-living behavior in initial polymerization steps.
Cardiff City live
transfer reaction: Neil Warnock holds press conference after deadline day
Xia, "Structure orientation of hemin self-assembly layer determining the direct electron
transfer reaction," Chemical Communications, vol.
Electron
transfer reaction was initiated by adding 0.5-40 [micro]M PfFd and 100 [micro]M NADPH, and the absorbance was monitored for 5 min with 10-second intervals at 550 nm.
Thekedar, Investigations on the Use of Breath Gas Analysis with Proton
Transfer Reaction Mass Spectrometry (PTR-MS) for a Non-Invasive Method of Early Lung Cancer Detection, Acta Geodaetica Et Cartographic Sinica, 2009.
The coupling of chemical reaction to the electron
transfer reaction can easily be detected with the help of the shifting of peak potentials as well as by the change in the ratio of peak currents.
At day 3, the [R.sub.ow] and [R.sub.b] magnitudes indicate the number of potential sites available for the charge
transfer reaction. The resistance of the pore wall, [R.sub.ow], was determined to be 6091 [OMEGA] [cm.sup.2], while the resistance of the pore base, [R.sub.b], was estimated to be 606 [OMEGA] [cm.sup.2], which is less than the wall resistance, [R.sub.ow].
The scientists have developed a mechanical model mouth interfaced with proton
transfer reaction mass spectrometry, which they are using for the rapid analysis of the release of VOCs under swallowing conditions.
Rollers within the instrument sequentially
transfer reaction steps from one "blister" to the next, with results being available in about an hour.