The regularity of the boundary of vortex patches for some non-linear transport equations

We prove the persistence of boundary smoothness of vortex patches for a non-linear transport equation in $\mathbb{R}^n$ with velocity field given by convolution of the density with an odd kernel, homogeneous of degree $-(n-1)$ and of class $C^2(\mathbb{R}^n\setminus\{0\}, \mathbb{R}^n).$ This allows the velocity field to have non-trivial divergence. The quasi-geostrophic equation in $\mathbb{R}^3$ and the Cauchy transport equation in the plane are examples.Comment: About the replacement: the main result has been significantly improved. The kernels to which the result applies are now of the more natural class conceivable. Furthermore, the proof has been adapted to the new context and an appendix has been adde

Encefalopatía hepática por hernia diafragmática

Encefalopatía hepática en un perro Groendendael de 4 años, causada por una hernia diafragmática congénita.Hepatic encephalopaty in a four years oid Groendendael, caused by a congenital diafragmatic hernia

Fractional differentiability for solutions of nonlinear elliptic equations

We study nonlinear elliptic equations in divergence form $${\operatorname{div}}{\mathcal A}(x,Du)={\operatorname{div}}G.$$ When ${\mathcal A}$ has linear growth in $Du$, and assuming that $x\mapsto{\mathcal A}(x,\xi)$ enjoys $B^\alpha_{\frac{n}\alpha, q}$ smoothness, local well-posedness is found in $B^\alpha_{p,q}$ for certain values of $p\in[2,\frac{n}{\alpha})$ and $q\in[1,\infty]$. In the particular case ${\mathcal A}(x,\xi)=A(x)\xi$, $G=0$ and $A\in B^\alpha_{\frac{n}\alpha,q}$, $1\leq q\leq\infty$, we obtain $Du\in B^\alpha_{p,q}$ for each $p<\frac{n}\alpha$. Our main tool in the proof is a more general result, that holds also if ${\mathcal A}$ has growth $s-1$ in $Du$, $2\leq s\leq n$, and asserts local well-posedness in $L^q$ for each $q>s$, provided that $x\mapsto{\mathcal A}(x,\xi)$ satisfies a locally uniform $VMO$ condition

A user-friendly web portal for T-Coffee on supercomputers

<p>Abstract</p> <p>Background</p> <p>Parallel T-Coffee (PTC) was the first parallel implementation of the T-Coffee multiple sequence alignment tool. It is based on MPI and RMA mechanisms. Its purpose is to reduce the execution time of the large-scale sequence alignments. It can be run on distributed memory clusters allowing users to align data sets consisting of hundreds of proteins within a reasonable time. However, most of the potential users of this tool are not familiar with the use of grids or supercomputers.</p> <p>Results</p> <p>In this paper we show how PTC can be easily deployed and controlled on a super computer architecture using a web portal developed using Rapid. Rapid is a tool for efficiently generating standardized portlets for a wide range of applications and the approach described here is generic enough to be applied to other applications, or to deploy PTC on different HPC environments.</p> <p>Conclusions</p> <p>The PTC portal allows users to upload a large number of sequences to be aligned by the parallel version of TC that cannot be aligned by a single machine due to memory and execution time constraints. The web portal provides a user-friendly solution.</p

T-Coffee: a web server for the multiple sequence alignment of protein and RNA sequences using structural information and homology extension

This article introduces a new interface for T-Coffee, a consistency-based multiple sequence alignment program. This interface provides an easy and intuitive access to the most popular functionality of the package. These include the default T-Coffee mode for protein and nucleic acid sequences, the M-Coffee mode that allows combining the output of any other aligners, and template-based modes of T-Coffee that deliver high accuracy alignments while using structural or homology derived templates. These three available template modes are Expresso for the alignment of protein with a known 3D-Structure, R-Coffee to align RNA sequences with conserved secondary structures and PSI-Coffee to accurately align distantly related sequences using homology extension. The new server benefits from recent improvements of the T-Coffee algorithm and can align up to 150 sequences as long as 10 000 residues and is available from both http://www.tcoffee.org and its main mirror http://tcoffee.crg.cat

De sangre y leche: Raza y religión en el mundo ibérico moderno

Sangre y leche fueron símbolos omnipresentes en los territorios de la «Monarquía Católica», en España y su Imperio colonial. Situados a medio camino entre la naturaleza y la cultura, a lo largo de las edades Media y Moderna, la sangre y la leche tejieron una poderosa analogía entre la reproducción fisiológica y la reproducción cultural. Como exploran los artículos de este libro, estos símbolos desempeñaron un papel determinante en los procesos de ordenación, jerarquización, y por supuesto también, de exclusión social dentro de la monarquía. Partiendo de perspectivas tan diversas como la religiosa, la social, la jurídica o la antropológica, los autores de este libro analizan esta privilegiada encrucijada simbólica para interrogarse sobre el origen y desarrollo del discurso de la «raza» en la España altomoderna.Índice: Introducción, por Mercedes García-Arenal y Felipe Pereda. SANGRE. LA POLÍTICA DEL LINAJE Y LA SANGRE. -Genealogía, linaje e identidad etnocultural en la Granada nazarí, por Mohamad Ballan. -Religión y raza en la Edad Media cristiana e islámica, por David Nirenberg. -Linaje, conversión y naturalezas inestables en el Atlántico ibérico: comparación entre la incorporación y la exclusión de los moriscos y de los pueblos indígenas, por Karoline P. Cook. -Limpieza de sangre: la batalla por la reforma desde Salucio hasta Quevedo, por Francisco Bethencourt. LA SANGRE, VEHÍCULO DE LA NATURALEZA INMUTABLE. -Sangre de mi sangre: lo que no se podía adquirir, o casi no, por Jean-Frédéric Schaub. -Demonios, estrellas e imaginación. El cuerpo a principios de la modernidad en los trópicos, por Jorge Cañizares-Esguerra. -«Sua malicia vem-se a conaturizar»: Sangre, color de piel y conversión en el mundo ibérico moderno, por Giuseppe Marcocci. -Los «judíos menstruantes». Sangre, bautismo y la retórica de la evidencia en un tratado de Juan de Quiñones (1632), por Stefania Pastore. SANGRE & LECHE. EL DISCURSO SIMBÓLICO DE LOS FLUIDOS SACROS .-Líquidos sagrados y la formación de protestantes (españoles), por James S. Amelang. -Divinos pechos, como cántaros: estética, política y género de las imágenes del Barroco español, por Felipe Pereda. -La puesta en escena de la limpieza de sangre en la España del siglo XVII, por Rachel Burk. REPRESENTACIONES Y FICCIONES. -Saberes médicos e ideología esencialista: sangre, esperma, leche y construcción del ser, por Christine Orobitg. -Ficciones genealógicas. El morisco Román Ramírez y los libros de caballerías, por Miguel Martínez. -Del morisco real al imaginado. Construcciones de la alteridad en la Península Ibérica moderna, por Francisco J. Moreno Díaz del Campo y Borja Franco Llopis. A MODO DE COLOFÓN. -De sangre y leche: debates y categorías sobre racialización. Una lectura retrospectiva, por Max S. Hering Torres. -¿Eran racistas los europeos de la modernidad temprana?, por Joan Pau Rubiès.Peer reviewe

Anti-tumour necrosis factor discontinuation in inflammatory bowel disease patients in remission: study protocol of a prospective, multicentre, randomized clinical trial

Background: Patients with inflammatory bowel disease who achieve remission with anti-tumour necrosis factor (anti-TNF) drugs may have treatment withdrawn due to safety concerns and cost considerations, but there is a lack of prospective, controlled data investigating this strategy. The primary study aim is to compare the rates of clinical remission at 1?year in patients who discontinue anti-TNF treatment versus those who continue treatment. Methods: This is an ongoing, prospective, double-blind, multicentre, randomized, placebo-controlled study in patients with Crohn?s disease or ulcerative colitis who have achieved clinical remission for ?6?months with an anti-TNF treatment and an immunosuppressant. Patients are being randomized 1:1 to discontinue anti-TNF therapy or continue therapy. Randomization stratifies patients by the type of inflammatory bowel disease and drug (infliximab versus adalimumab) at study inclusion. The primary endpoint of the study is sustained clinical remission at 1?year. Other endpoints include endoscopic and radiological activity, patient-reported outcomes (quality of life, work productivity), safety and predictive factors for relapse. The required sample size is 194 patients. In addition to the main analysis (discontinuation versus continuation), subanalyses will include stratification by type of inflammatory bowel disease, phenotype and previous treatment. Biological samples will be obtained to identify factors predictive of relapse after treatment withdrawal. Results: Enrolment began in 2016, and the study is expected to end in 2020. Conclusions: This study will contribute prospective, controlled data on outcomes and predictors of relapse in patients with inflammatory bowel disease after withdrawal of anti-TNF agents following achievement of clinical remission. Clinical trial reference number: EudraCT 2015-001410-1