A simulation tool which utilizes parallel processing is developed to describe molecular kinetics in 2D, single-and multi-component atmospheres on Callisto. This expands our previous study the role of collisions 1D Callisto composed radiolytic products (Carberry Mogan et al., 2020) by implementing a temperature gradient from noon midnight across Callisto's surface and introducing sublimated wate...

The active site of Hyd-1, an oxygen-tolerant membrane-bound [NiFe]-hydrogenase from Escherichia coli, contains four highly conserved residues that form a "canopy" above the bimetallic center, closest to the site at which exogenous agents CO and O2 interact, substrate H2 binds, and a hydrido intermediate is stabilized. Genetic modification of the Hyd-1 canopy has allowed the first systematic and...

PtIr/TiO2 catalyst was prepared and investigated for the selective catalytic reduction of NOx by H2 (H2-SCR) in presence O2. It found that exhibited higher H2-SCR activity as well wider temperature window than Pt/TiO2 Ir/TiO2 catalysts, optimum mass ratio Pt/Ir 1:1. Characterization showed metallic Pt Ir were generated on PtIr/TiO2, both which favorable active sites process. In situ DRIFTS stud...

Cyanobacteria are considered good models for biohydrogen production because they are relatively simple organisms with a demonstrable ability to generate H2 under certain physiological conditions. However, most produce only little H2, revert readily to H2 consumption, and suffer from hydrogenase sensitivity to O2. Strains of the cyanobacteria Lyngbya aestuarii and Microcoleus chthonoplastes obta...

The Front Cover shows the molecular sieve effect by carbon shell coated on metal surface. To suppress reverse current flow generated due to H2/O2 boundary formation under shut-down/start-up conditions during fuel cell operation, selective H2 permeation through allows high HOR activity while effectively inhibiting ORR. More information can be found in Research Article K. Ko, J. Min et al.

In Chlamydomonas reinhardtii cells, H2 photoproduction can be induced in conditions of sulfur deprivation in the presence of acetate. The decrease in photosystem II (PSII) activity induced by sulfur deprivation leads to anoxia, respiration becoming higher than photosynthesis, thereby allowing H2 production. Two different electron transfer pathways, one PSII dependent and the other PSII independ...