We investigate a family of polytopes introduced by E.M.\ Feichtner, A.\ Postnikov and B.\ Sturmfels, which were named nestohedra. The vertices of these polytopes may intuitively be understood as constructions of hypergraphs. Limit cases in this family of polytopes are, ...

Abstract Coupled measurements of nitrate (NO 3 − ), nitrogen (N), and oxygen (O) isotopic composition (δ 15 N NO3 and δ 18 O NO3 ) were used to investigate the sources and processes of N cycling, while the microbial source tracking (MST) method was used to identify micr...

Thermal stability of the alumina based samples were measured using the water immersion test. Mechanical characteristics such as strength, dynamic modulus of elasticity resulting from resonance frequency measurements were considered. Image analysis was used to measure th...

Comment: 9 pages, 2 figures

Abstract GCAPs are neuronal Ca2 +-sensors playing a central role in light adaptation. GCAPs are N-terminally myristoylated membrane-associated proteins. Although, the myristoylation of GCAPs plays an important role in light adaptation its structural and physiological ro...

Two binary Ru-Ti oxides, Rum Ti0.9O2 and Ru0.7Ti0.3O2, were synthesized by the sol-gel method and used as an electrocatalyst support. The system was characterized by XRD, EDS, TEM and cyclic voltammetry. The Rum Ti0.9O2 and Ru0.7Ti0.3O2 consist of two phases of anatase ...

The paper studies a combined effect of bed steps (BS) in both converging channels on the 3D flow in a confluence with α = 90o. Nine combinations of bed elevation discordance ratio values in the two channels are analysed. It is shown that:1) a portion of the tributary fl...

Summary Background Oxidative stress and inflammation play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Objective Pulmonary function, oxidative stress parameters and inflammatory markers were measured in 74 patients with severe C...

Abstract Two kinetic models of Fischer–Tropsch product selectivity have been developed based on reaction networks from the literature. The models were fitted to experimental data obtained using commercial iron-based catalyst in a stirred tank slurry reactor and under a ...

Abstract The transesterification of triglycerides (vegetable oil) with methanol using CaO·ZnO mixed oxides catalyst were conducted to produce FAME (Fatty Acid Methyl Esters, i.e. biodiesel). Catalyst was synthesized by ball milling of CaO and ZnO powder mixture (using m...