Determining the constitutive parameters of the human femoral vein in specific patients

This study suggests a method for computing the constitutive model for veins in vivo from clinically registered ultrasound images. The vein is modelled as a hyperelastic, incompressible, thin-walled cylinder and the membrane stresses are computed using strain energy. The material parameters are determined by tuning the membrane stress to the stress obtained by enforcing global equilibrium. In addition to the mechanical model, the study also suggests a preconditioning of the pressure-radius signal. The preconditioning computes an average pressure-radius cycle from all consecutive cycles in the registration and removes, or reduces undesirable disturbances. In order to overcome this problem, an approach is proposed that allows constitutive equations to be determined from clinical data by means of reasonable assumptions regarding in situ configurations and stress states of vein walls. The approach is based on a two-dimensional Fung-type stored-energy function that captures the characteristic nonlinear and anisotropic responses of vein

Methodology of the Virtual Reconstruction of Arquitectonic Heritage: Ambassador Vich's Palace in Valencia

The 19th century was disastrous as far as the conservation of architectonic heritage is concerned. The awareness of the importance of preserving monuments that has prevailed since the end of the last century was dazzlingly absent in the previous, leading both to the disappearance of representative heritage works and the plundering of many others. The present study establishes the methodological basis to proceed with the virtual reconstruction of many disappeared architectures, representative of emblematic architectonic typologies. A method based on the combination of deduction and induction allows benchmarks to be created that signify a starting point to which the key and specific elements of each building are later incorporated, from the data extracted from the conserved parts and the graphic, literary and archive documents. The result is the virtual recovery of the general outlines of the architecture: morphology of the plot, volumetry, exterior and interior facades, and the functional layout. The good results obtained in the study of the disappeared Ambassador Vich's Palace, allow the methodology to be extended to the analysis of other similar examples, serving investigators as a tool to carry out an arduous task of deciphering a trail that is increasingly fading with the passing of time.Galiana Agullo, M.; Mas Tomas, MDLA.; Lerma Elvira, C.; Peñalver Martínez, MJ.; Conesa Tejada, S. (2014). Methodology of the Virtual Reconstruction of Arquitectonic Heritage: Ambassador Vich's Palace in Valencia. International Journal of Architectural Heritage. 8(1):94-123. doi:10.1080/15583058.2012.672623S9412381Boix, V. 1979.Historical and topographic Valencia[in Spanish]. Vol. I261 S. A. Printing J. Rius.Estaban Chapapría, J. (2001). Impostación del patio del Embajador Vich en el ex-convento del Carmen (Valencia). Loggia, Arquitectura & Restauración, (12), 26. doi:10.4995/loggia.2001.3605Morrish, S. W., & Laefer, D. F. (2010). Web-Enabling of Architectural Heritage Inventories. International Journal of Architectural Heritage, 4(1), 16-37. doi:10.1080/15583050902731056Lotz, W. 1995.Architecture in Italy 1500–1600 [in Italian]35–37. ed. RizzoliYale University Press.Lourenço, P. B., Peña, F., & Amado, M. (2010). A Document Management System for the Conservation of Cultural Heritage Buildings. International Journal of Architectural Heritage, 5(1), 101-121. doi:10.1080/15583050903318382Vila Ferrer, S. (2001). La recuperación del patio del palacio del Embajador Vich (Valencia). Loggia, Arquitectura & Restauración, (12), 44. doi:10.4995/loggia.2001.3606Zonta, D., Pozzi, M., & Zanon, P. (2008). Managing the Historical Heritage Using Distributed Technologies. International Journal of Architectural Heritage, 2(3), 200-225. doi:10.1080/1558305080206369

Spread of a SARS-CoV-2 variant through Europe in the summer of 2020.

Following its emergence in late 2019, the spread of SARS-CoV-21,2 has been tracked by phylogenetic analysis of viral genome sequences in unprecedented detail3–5. Although the virus spread globally in early 2020 before borders closed, intercontinental travel has since been greatly reduced. However, travel within Europe resumed in the summer of 2020. Here we report on a SARS-CoV-2 variant, 20E (EU1), that was identified in Spain in early summer 2020 and subsequently spread across Europe. We find no evidence that this variant has increased transmissibility, but instead demonstrate how rising incidence in Spain, resumption of travel, and lack of effective screening and containment may explain the variant’s success. Despite travel restrictions, we estimate that 20E (EU1) was introduced hundreds of times to European countries by summertime travellers, which is likely to have undermined local efforts to minimize infection with SARS-CoV-2. Our results illustrate how a variant can rapidly become dominant even in the absence of a substantial transmission advantage in favourable epidemiological settings. Genomic surveillance is critical for understanding how travel can affect transmission of SARS-CoV-2, and thus for informing future containment strategies as travel resumes. © 2021, The Author(s), under exclusive licence to Springer Nature Limited

Determining the constitutive parameters of the human femoral vein in specific patients

This study suggests a method for computing the constitutive model for veins in vivo from clinically registered ultrasound images. The vein is modelled as a hyperelastic, incompressible, thin-walled cylinder and the membrane stresses are computed using strain energy. The material parameters are determined by tuning the membrane stress to the stress obtained by enforcing global equilibrium. In addition to the mechanical model, the study also suggests a preconditioning of the pressure-radius signal. The preconditioning computes an average pressure-radius cycle from all consecutive cycles in the registration and removes, or reduces undesirable disturbances. In order to overcome this problem, an approach is proposed that allows constitutive equations to be determined from clinical data by means of reasonable assumptions regarding in situ configurations and stress states of vein walls. The approach is based on a two-dimensional Fung-type stored-energy function that captures the characteristic nonlinear and anisotropic responses of vein

Sapientia, 1978, Vol. XXXIII, nº 127 (número completo)

Contenido: Vida del espíritu / Octavio N. Derisi – La esencia de lo estético / José María de Estrada – Orden natural y orden sobrenatural en Santo Tomás de Aquino / Ricardo Marimón Batlló – Entre la ontología y la antropología filosóficas / Diego F. Pró – “Ser” y “ente” en A. Rosmini / William R. Darós – Notas y comentarios -- Bibliografí

Evaluación de fuentes proteicas comerciales en el cultivo de rotíferos

Para suplir las necesidades nutricionales de la cobia en sus primeros días de desarrollo larval se realizó el cultivo masivo de rotíferos bajo el esquema tradicional de levadura como fuente proteica, no obstante este cultivo experimentaba marcados descensos en la población, junto con la aparición en el fondo de los tanques de Vibrio sp.y Pseudomonas sp., lo que repercutía en la programación e inicio de los ciclos de larvicultura. En una primera instancia se implementó un recambio diario del 70% con algas de los géneros Chaetoceros y/o Nannochloropsis con lo que se logró una relativa estabilidad. No obstante, y con el propósito de garantizar el suministro permanente de los rotíferos se buscaron fuentes proteicas alternativas a la levadura utilizando las formulaciones comerciales Algamac 3050, Protein Plus y Emulsión de Scott, probándolas en forma individual y en mezcla, variando la concentración de alimento (0.5, 1.0, 1.5, 2.0, 2.5, 3.0) sin adición de algas para determinar su contribución real a los parámetros productivos del cultivo. Se aplicó un análisis multifactorial entre tratamientos y concentraciones, el cual mostró que tanto para Protein Plus como con la mezcla 1:1 de Protein Plus y Emulsión de Scott a una concentración de 2.0, se obtenían valores de fertilidad superiores al 8% en los siete días que duró el ensayo, lo que favoreció la renovación y al mismo tiempo el crecimiento del cultivo. Esta formulación aplicada a escala comercial permitió acortar a veinte días la obtención de 1.4 x 109 rotíferos para suplir las necesidades nutricionales de la larvicultura.Departamento Administrativo de Ciencia, Tecnología e Innovación [CO] Colciencias6507-586-35739Aumento de la productividad en un cultivo masivo de alimento vivo como pilar de la larvicultura de especies marinasn