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In Linked Data, the use of owl:sameAs is ubiquitous in interlinking data-sets. There is however, ongoing discussion about its use, and potential misuse, particularly with regards to interactions with inference. In fact, owl:sameAs can be viewed as encoding only one point on a scale of similarity, one that is often too strong for many of its current uses. We describe how referentially opaque contexts that do not allow inference exist, and then outline some varieties of referentially-opaque alternatives to owl:sameAs. Finally, we report on an empirical experiment over randomly selected owl:sameAs statements from the Web of data. This theoretical apparatus and experiment shed light upon how owl:sameAs is being used (and misused) on the Web of data. [ABSTRACT FROM AUTHOR]

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A photoinduced FeII spin crossover reaction in solution is studied with ultrafast x-ray absorption spectroscopy. The iron-nitrogen bond lengthens by 0.21±0.03 A in the high-spin transient excited state relative to the ground state. [ABSTRACT FROM AUTHOR]

Femtosecond time-resolved spectroscopy has been used to probe charge transfer-state deactivation in Fe(II) complexes. A sub-100 fs process, which appears to be characteristic of a number of simple Fe(II) polypyridyl complexes, is implicated as a reason why TiO2-based photovoltaic devices utilizing such chromophores as sensitizers exhibit low photocurrents. [ABSTRACT FROM AUTHOR]