Pub environment

An audio-visual model a pub in Oldenburg, Germany. The model has been created for a highly accurate acoustic rendering over loudspeaker arrays and headphones and for visual representation in virtual reality. The package encompasses an accurate spatial geometric model of the pub, which can be used for acoustic simulations, and a visual model for virtual reality. It further includes a definition of an acoustic scene for the purpose of audiology and hearing research together with the associated measurements of the acoustic impulse responses using a binaural recording system (binaural room impulse responses), a tetrahedral and omnidirectional microphones. The 3D model was developed by Maartje Hendrikse

Pub environment

An audio-visual model a pub in Oldenburg, Germany. The model has been created for a highly accurate acoustic rendering over loudspeaker arrays and headphones and for visual representation in virtual reality. The package encompasses an accurate spatial geometric model of the pub, which can be used for acoustic simulations, and a visual model for virtual reality. It further includes a definition of an acoustic scene for the purpose of audiology and hearing research together with the associated measurements of the acoustic impulse responses using a binaural recording system (binaural room impulse responses), a tetrahedral and omnidirectional microphones. The 3D model was developed by Maartje Hendrikse

Oxidation State and Local Structure of Plutonium Reacted with Magnetite, Mackinawite, and Chukanovite

International audienceDue to their redox reactivity, surface sorption characteristics, and ubiquity as corrosion products or as minerals in natural sediments, iron(II)-bearing minerals control to a large extent the environmental fate of actinides. Pu-LIII-edge XANES and EXAFS spectra were used to investigate reaction products of aqueous 242Pu(III) and 242Pu(V) reacted with magnetite, mackinawite, and chukanovite under anoxic conditions. As Pu concentrations in the liquid phase were rapidly below detection limit, oxidation state and local structure of Pu were determined for Pu associated with the solid mineral phase. Pu(V) was reduced in the presence of all three minerals. A newly identified, highly specific Pu(III)-sorption complex formed with magnetite. Solid PuO2 phases formed in the presence of mackinawite and chukanovite; in the case of chukanovite, up to one-third of plutonium was also present as Pu(III). This highlights the necessity to consider, under reducing anoxic conditions, Pu(III) species in addition to tetravalent PuO2 for environmental risk assessment. Our results also demonstrate the necessity to support thermodynamic calculations with spectroscopic data