Combustion resistance of the 129Xe hyperpolarized nuclear spin state.

Using a methane-xenon mixture for spin exchange optical pumping, MRI of combustion was enabled. The (129)Xe hyperpolarized nuclear spin state was found to sufficiently survive the complete passage through the harsh environment of the reaction zone. A velocity profile (V(z)(z)) of a flame was recorded to demonstrate the feasibility of MRI velocimetry of transport processes in combustors.

Toward a resolution of the cost of equity conundrum in the lodging industry: a conceptual framework.

The firm value estimate is derived from accounting and finance practices that focus on physical assets as opposed to intangible assets (Arthur Andersen Hospitality Leisure Executive Rep. 5 (1998) 2). The cost of equity estimation models used in firm valuation and capital investment decisions fall short of tapping important constructs to firm value, especially the intangible ones.

In situ NMR spectroscopy of combustion.

The first successful in situ studies of free combustion processes by one- and two-dimensional NMR spectroscopy are reported, and the feasibility of this concept is demonstrated. In this proof-of-principle work, methane combustion over a nanoporous material is investigated using hyperpolarized (hp)-xenon-129 NMR spectroscopy. Different inhomogeneous regions within the combustion cell are identified by the xenon chemical shift, and the gas exchange between these regions during combustion is revealed by two-dimensional exchange spectra (EXSY).