Utilization of solid "elemental" sulfur by the phototrophic purple sulfur bacterium Allochromatium vinosum: a sulfur K-edge X-ray absorption spectroscopy study.

The purple sulfur bacterium Allochromatium vinosum can use elemental sulfur as an electron donor for anoxygenic photosynthesis. The elemental sulfur is taken up, transformed into intracellular sulfur globules and oxidized to sulfate. Commercially available "elemental" sulfur usually consists of the two species cyclo-octasulfur and polymeric sulfur.

"Contact voltage" in nanoparticle/molecule connections.

This work presents conclusive evidence that connecting Pt and Co nanoparticles stabilized by an aluminum-organic shell with molecular spacers interacting with this shell can induce notable changes in the electronic structure of the metal. X-ray absorption spectroscopy measurements at the Al K-, the Pt L(III)-, and the Co K-edge provide consistent evidence for this effect. The changes induced by cross-linking with an acidic spacer are discussed in detail as an example to elucidate the mechanism of this effect.

Influence of mycotoxin producing fungi (Fusarium, Aspergillus, Penicillium) on gluten proteins during suboptimal storage of wheat after harvest and competitive interactions between field and storage fungi.

Cereals contaminated by Aspergillus spp., Penicillium spp., and Fusarium spp.

The structure of Ba@C74.

The title compound has been produced by using the radio frequency (RF) method. Barium and carbon were evaporated simultaneously under dynamic flow of helium at different temperatures. About 0.