Resolving old problems with layered polytungstates related to hexagonal tungsten bronze: phase formation, structures, crystal chemistry and some properties.

A 60-year-old problem with the atomic arrangements and exact compositions of alkali polytungstates related to hexagonal tungsten bronze (HTB) was solved. The systems WO-WO ( = K, Rb) were restudied and the average monoclinic layered structures of stoichiometric polytungstates WO ( = K, Rb, Cs, Tl) and WO ( = K, Rb, Cs) were first successfully determined. The structures resemble those of "MoWO" and "MoWO" (J.

Circulating Small Extracellular Vesicles Profiling and Thrombin Generation as Potential Markers of Thrombotic Risk in Glioma Patients.

Introduction: Patients with glioma (GM) are at a high risk of venous thromboembolism (VTE). The role of microvesiculation in the cancer-associated thrombosis mechanisms has been previously demonstrated. This study aimed to evaluate the relative abundance of extracellular vesicles (EVs) and thrombin generation (TG) in combination with standard laboratory tests in patients with newly diagnosed GM as potential prognostic markers in VTE.

Triple molybdates KNaM(MoO) (M = Ni, Mg, Co) and KLiMg(MoO) isotypic with II-NaFe(AsO) and yurmarinite: synthesis, potassium disorder, crystal chemistry and ionic conductivity.

The triple molybdates KNaM(MoO) (M = Ni, Mg, Co) and KLiMg(MoO) were found upon studying the corresponding ternary molybdate systems, and their structures, thermal stability and electrical conductiviplusmnty were investigated. The compounds crystallize in the space group R3c and are isostructural with the sodium-ion conductor II-NaFe(AsO) and yurmarinite, Na(Fe, Mg, Cu)(AsO); their basic structural units are flat polyhedral clusters of the central M1O octahedron sharing edges with three surrounding M2O octahedra, which combine with single NaO octahedra and bridging MoO tetrahedra to form open three-dimensional (3D) frameworks where the cavities are partially occupied by disordered potassium (sodium) ions. The split alkali-ion positions in KNaM(MoO) (M = Ni, Mg, Co) give their structural formulae as [(K,Na)□)](Na)[M1][M2](MoO), whereas the lithium-containing compound (K□)(MgK)(LiMg)Mg(MoO) shows an unexpected (Mg, K) isomorphism, which is similar to (Mn, K) and (Co, K) substitutions in isostructural KLiM(MoO) (M = Mn, Co).

Five years' experience with a peripheral veno-arterial ECMO for mechanical bridge to heart transplantation.

Background: Mechanical circulatory support (MCS) is the only way to save a life for heart transplant candidates and to decrease of waiting list mortality. The choice between short- or long-term pretransplant MCS depends on of type and severity of CHF. One of the most frequently used methods of temporary MSC before orthotopic heart transplantation (OHTx) is veno-arterial extracorporeal membrane oxygenation (VA ECMO).