The technique of stray field diffusion NMR is adapted to study the diffusion properties of water in monodisperse wet foams. We show for the first time, that the technique is capable of observing q-space diffusion diffraction peaks in monodisperse aqueous foams with initial bubble sizes in the range of 50-85μm. The position of the peak maximum can be correlated simply to the bubble size in the foam leading to a technique that can investigate the stability of the foam over time. The diffusion technique, together with supplementary spin-spin relaxation analysis of the diffusion data is used to follow the stability and coarsening behaviour of monodisperse foams with a water fraction range between 0.24 and 0.33. The monodisperse foams remain stable for a period of hours in terms of the initial bubble size. The duration of this stable period correlates to the initial size of the bubbles. Eventually the bubbles begin to coarsen and this is observed in changes in the position of the diffusion diffraction maxima.
Thi s v e r sio n is b ei n g m a d e a v ail a bl e in a c c o r d a n c e wit h p u blis h e r p olici e s.S e e h t t p://o r c a . cf. a c. u k/ p olici e s. h t ml fo r u s a g e p olici e s. Co py ri g h t a n d m o r al ri g h t s fo r p u blic a tio n s m a d e a v ail a bl e in ORCA a r e r e t ai n e d by t h e c o py ri g h t h ol d e r s .This is a pre-copy-editing, author produced PDF of an article accepted following peer review for publication in Tourism Geographies.
(Baldacchino, 2006, p. 10). Set on Bardsey, a real small island off the coast of north Wales, the novel employs a multiple-character narrative to explore and critique the various ways in which Bardsey has been constructed in the Welsh cultural imagination. In particular, the novel explores the idea of the island as a queer space. It does so in a way that posits Bardsey in dialectical relation to an ongoing, politically dynamic Welsh mainland. The article suggests that the novel can be read as a mainland appropriation of the island in the post-devolution era. Yet this is simultaneously an enabling imaginative act that confirms the power of literature to create new imaginative geographies.
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