In this work, we studied atomic self-diffusion and structural phase transformation in a single iron mononitride (FeN) thin film deposited at an optimized substrate temperature (Ts) of 423 K. At Ts, the FeN exhibits tetrahedral coordination between Fe N atoms (ZnS-type structure with lattice parameter 4.28 Å). The was by combining x-ray diffraction K-edge absorption spectroscopy conversion elect...

EuCsFe 4 As pnictide (1144 family) single crystals with a critical temperature of T c ≈ 36.8 K and optimal superconducting properties in the stoichiometric composition are grown. Multiple-gap superconductivity determined by bulk order parameters $$\Delta _{{\text{L}}}^{{{\text{out}}}}$$ , _{{\text{L}}}^{{{\text{in}}}}$$ $${{\Delta }_{{\text{S}}}}$$ characteristic ratios $$2\Delta _{{\text{L}}}^...

Many misfolded endoplasmic reticulum (ER) proteins are eliminated by ERAD, a process in which substrates are polyubiquitylated and moved into the cytosol for proteasomal degradation. We have identified in S. cerevisiae distinct ubiquitin-ligase complexes that define different ERAD pathways. Proteins with misfolded ER-luminal domains use the ERAD-L pathway, in which the Hrd1p/Hrd3p ligase forms ...

Configurational lattice energy techniques are used to investigate oxygen vacancy ordering and the order– disorder transition in SrFeO2.50 . Vacancy disorder is shown to present many new challenges, largely due to the extensive relaxation in such grossly non-stoichiometric systems. With large supercells it is not feasible to optimise each individual configuration. Efficient methods for choosing ...

Heteroatom addition reactions to unactivated alkynes are thought to be best mediated by transition-metal catalysts such as palladium and gold. Recent studies by Hammond and co-workers and others demonstrate that cyclizations of alkynes with nitrogenand oxygen-containing nucleophiles are possible using stoichiometric amounts of tetra-n-butylammonium fluoride. However, these examples appear to be...

The central event of the hemostatic process is the generation of thrombin through the tissue factor pathway. This is a highly regulated, dynamic process in which thrombin itself plays many roles, positively and negatively its production and destruction. The hemostatic process is essential to normal physiology and is also the Achilles heel of our aging population. The inappropriate generation of...