The title three-dimensional coordination network, {[Dy(C(4)H(4)N(2)O(2))(4)](ClO(4))(3)}(n), is isostructural of other lanthanides. The Dy(+3 )cation lies on a fourfold roto-inversion axis. It is coordinated in a distorted square-anti-prismatic fashion by eight O atoms from bridging pyrazine N,N'-dioxide ligands. There are two unique pyrazine N,N'-dioxide ligands. One ring is located around an ...

The title three-dimensional coordination network, {[Er(C(4)H(4)N(2)O(2))(4)](ClO(4))(3)}(n), is isostructural to that of other lanthanides. The Er(+3 )cation lies on a fourfold roto-inversion axis. It is coordinated in a distorted square-anti-prismatic fashion by eight O atoms from bridging pyrazine N,N'-dioxide ligands. There are two unique pyrazine N,N'-dioxide ligands. One ring is located ar...

Introducción. El aneurisma aórtico abdominal roto, tiene una mortalidad del 80 % al 90 %. Para su reparación existe técnica abierta y otra endovascular, las cuales tienen diferencias entre sus beneficios complicaciones. método de elección en la actualidad para corrección esta alteración anatómica es sin embargo, no el más usado, porque se cuenta todo tiempo con equipo humano cirugía vascular re...

We probe the roto-translational Brownian motion of optically anisotropic particles suspended in water with a simple and straightforward optical microscopy experiment that does not require positional or rotational particle tracking. We acquire a movie of the suspension placed between two polarizing elements and we extract the translational diffusion coefficient D T and the rotational diffusion c...

In the present paper, the roto-torsional energy levels of hydrogen peroxide are determined from ab initio calculations performed at the MP4(SDQ)/AUG-cc-pVTZ//MP4(SDQ)/cc-pVTZ+ ++ level. The rotational levels corresponding to the torsional states n = 0 and 1 are determined variationally up to J = 20. The flexible model used considers the roto-vibrational interactions. Symmetry conditions are inc...

The V1-region of the primary visual cortex performs contour integration in the early mammalian visual system. The geometry of the neural connections of the V1-region has been mathematically described as a roto-translational continuous space. In this work, a bio-inspired methodology for processing 2D images based on the V1-region neurogeometrical structure is proposed. The input image is first t...

Using a classical analytical criterion (that of curvature) and numerical results (Poincarè sections and spectral statistics), a transition order–chaos– order in the roto–vibrational model of atomic nuclei has been shown. Numerical calculations were performed for some deformed nuclei.

We report a case of a ruptured aneurysm of the celiac trunk in a 32-year-old, male patient with Behçet Disease (BD). Aneurysm resection was performed and the patient is well during a follow up of 32 months. To our knowledge, this is the first reported case of a ruptured celiac trunk aneurysm successfully treated in a patient with BD. RESUMO Relatamos o caso de um aneurisma roto do tronco celíac...