Photocatalytic reduction of carbon dioxide to formaldehyde was investigated on four semiconductor photocatalysts (FeS, FeS/FeS2, NiO and TiO2). The reaction was carried out in continues flow of CO2 gas bubbled into the reactor. Semiconductor photocatalysts were characterized by X-Ray diffraction (XRD) and Diffuse Reflectance Spectroscopic (DRS) methods. Sulfide ion was used as hole scavenger. T...

The Element CXI Elemental Computing Architecture (ECA) is a scalable, fully programmable platform for parallel and distributed processing. The architecture is comprised of a dynamically configurable fabric of heterogeneous elements—or dataflow engines—that time-share operations in a token-based data-driven flow. Computationally intensive tasks are distributed across elements for maximum speed a...

BACKGROUND Elemental sulfur exists is a variety of forms in natural systems, from dissolved forms (noted as S8(diss) or in water as S8(aq)) to bulk elemental sulfur (most stable as α-S8). Elemental sulfur can form via several biotic and abiotic processes, many beginning with small sulfur oxide or polysulfidic sulfur molecules that coarsen into S8 rings that then coalesce into larger forms: [For...

The phenomenon of resonance amongst a set of different classical chemical structures entails at an elementary level the enumeration of these resonance structures, corresponding (in benzenoid molecules) to perfect matchings of the underlying molecular (n-network) graph. This enumeration is analytically performed here for the finite-sized elemental benzenoid graphs corresponding to hexagonal cove...

" Sentential reflection " in the sense of [Fr03] is based on reflecting down from a category of classes. " Elemental sentential reflection " is based on reflecting down from a category of elemental classes. We present various forms of elemental sentential reflection, which are shown to interpret and be interpretable in certain set theories with large cardinal axioms.

The Revo:oveR installation is a collection of six co-located installations exploring multimodal interaction, self-evolving aural and visual fabric, integration of architectural space, and the notion of communal art. The interactive aural communal soundscape Elemental and one of the two physical sculptures titled Cyrene Reefs exhibited at NIME 2009 can be seen as the core aural components of the...