Data were obtained from a primary chart abstraction study, an on-going prospective study, and the published literature.
Data to inform the model were obtained from a primary chart abstraction study, an on-going prospective study, and the published literature.
The introduction of this hydroxy function is believed to occur at the stage of an FCC and is likely to be a two-step radical reaction (i.e., either the radical-forming primary H abstraction is unselective, or incorporation of oxygen takes place other than at the original radical site).
There is a refreshing fearlessness to this exhibition, which takes its title from a story that Mr. Shafrazi told Mr. Brown and Mr. Fischer: that the original title of Barnett Newman's four primary-colored abstractions, "Who's Afraid of Red, Yellow and Blue?," was "Who's Afraid of Jasper Johns?" The kicker — that Mr. Johns objected — is probably apocryphal.
Finally, the senior author abstracted key data elements on eight eligible papers, blinded to the primary reviewer's abstraction, and agreed with the primary reviewer's assessment on all elements in all eight papers.
Herein, we calculate reaction rate constants for H abstraction from primary, secondary and benzylic sites in nPB.
Both t-Bu and i-Pr are produced by the intermolecular hydrogen abstraction of primary and tertiary terminal macroradicals, and the subsequent β scission of the resulting on-chain macroradicals at the skeletal CC bond of the main chain yields TTD and TVD.
The formation of functional groups of non-volatile oligomers by the thermal degradation of polyisobutylene is characterized by a kinetic approach including intermolecular hydrogen abstraction of primary (p) and tertiary (t) terminal macroradicals (Rp and Rt) and volatile small radicals (S), followed by β-scission.
Non-volatile oligomers obtained by the thermal degradation of polyisobutylene were finely fractionated and the distribution of the functional groups of each fraction was characterized by a kinetic approach including the intermolecular hydrogen abstraction of primary and tertiary terminal macroradicals (Rp· and Rt·) and volatile small radicals (S·), followed by β scission.
The works are generally less evocative in the next section, which is devoted to abstraction based on primary geometric structures.
