2,586 research outputs found
Angiostrongilosis en perros : una enfermedad emergente
Este artículo revisa la fisiolopatología, signos clínicos, diagnóstico y tratamiento del parásito metastrongiloide Angiostrongylus vasorum, que afecta a cánidos domésticos y salvajes dando lugar a una amplia gama de signos clínicos. Así mismo, se describe la distribución del parásito y la aparente extensión a territorios no endémicos
Male infant patient with a mesenteric cyst in the greater and lesser omenta: a case report
Background: Mesenteric cysts are intra-abdominal masses of congenital origin, which most frequently occur in children, with an incidence of approximately 1 case per 20,000 pediatric admissions. Its progression can be asymptomatic, and its diagnosis can be incidental. However, it usually occurs with symptoms such as nausea, vomiting, constipation, sensation of a mass, and/or diarrhea. The diagnostic imaging method of choice is abdominal ultrasound. Case presentation: Below, we present the case of a previously healthy 1-year-old male patient with nonspecific symptoms, who was referred to a tertiary hospital. The presence of a mesenteric cyst was detected at the end of the diagnostic approach. Conclusion: It is important to know these pathologies even though they are infrequent, because although they are benign masses by definition, they can lead to complications such as intestinal torsion, intestinal obstruction, and even peritonitis. © 2020 The Author(s)
Rules, Standards, and the Internal Point of View
Large scale structure and cosmolog
Fe3O4-Au Core-Shell Nanoparticles as a Multimodal Platform for In Vivo Imaging and Focused Photothermal Therapy
In this study, we report the synthesis of gold-coated iron oxide nanoparticles capped
with polyvinylpyrrolidone (Fe@Au NPs). The as-synthesized nanoparticles (NPs) exhibited good
stability in aqueous media and excellent features as contrast agents (CA) for both magnetic resonance
imaging (MRI) and X-ray computed tomography (CT). Additionally, due to the presence of the
local surface plasmon resonances of gold, the NPs showed exploitable “light-to-heat” conversion
ability in the near-infrared (NIR) region, a key attribute for effective photothermal therapies (PTT).
In vitro experiments revealed biocompatibility as well as excellent efficiency in killing glioblastoma
cells via PTT. The in vivo nontoxicity of the NPs was demonstrated using zebrafish embryos as
an intermediate step between cells and rodent models. To warrant that an effective therapeutic
dose was achieved inside the tumor, both intratumoral and intravenous routes were screened in
rodent models by MRI and CT. The pharmacokinetics and biodistribution confirmed the multimodal
imaging CA capabilities of the Fe@AuNPs and revealed constraints of the intravenous route for
tumor targeting, dictating intratumoral administration for therapeutic applications. Finally, Fe@Au
NPs were successfully used for an in vivo proof of concept of imaging-guided focused PTT against
glioblastoma multiforme in a mouse model.Spanish Ministry of Economy, Industry and
Competitiveness (CTQ2017-86655-R and BIO2017-84246-C2-1-R)Fondo Social de la DGA (grupos
DGA) and by the Regional Ministry of Health of Andalusia (OH-0026-2018).Associate Laboratory for Green Chemistry—LAQVApplied Molecular Biosciences
Unit –UCIBIOPortuguese national funds from FCT/MCTES (UIDB/04378/2020
and UIDB/50006/2020
La argamasa que une los reinos: gestión e integración de las Indias en la Monarquía Hispánica, siglo XVII
Considering the administration as a mortar that united the different kingdoms integrated in the Hispanic monarchy, this text focuses on the Indies judiciary Once the nature, the way to access and the remit of the agents of justice is analysed, the text contemplates some considerations in relation to the debate held during the 17th Century about the position the Indies occupied, or should occupy, in that universeA partir del símil que considera la administración como una especie de argamasa capaz de mantener unidos los diferentes reinos integrados en la Monarquía Hispánica, el presente texto centra su atención en la judicatura indiana Una vez analizadas la naturaleza, las vías de acceso y los ámbitos de acción de los agentes de justicia, se plantean algunas consideraciones en relación al debate sostenido durante el siglo XVII sobre la posición que las Indias ocupaban, o debían ocupar, en el universo contemplado
From thermal rectifiers to thermoelectric devices
We discuss thermal rectification and thermoelectric energy conversion from
the perspective of nonequilibrium statistical mechanics and dynamical systems
theory. After preliminary considerations on the dynamical foundations of the
phenomenological Fourier law in classical and quantum mechanics, we illustrate
ways to control the phononic heat flow and design thermal diodes. Finally, we
consider the coupled transport of heat and charge and discuss several general
mechanisms for optimizing the figure of merit of thermoelectric efficiency.Comment: 42 pages, 22 figures, review paper, to appear in the Springer Lecture
Notes in Physics volume "Thermal transport in low dimensions: from
statistical physics to nanoscale heat transfer" (S. Lepri ed.
Multiwavelength studies of MHD waves in the solar chromosphere: An overview of recent results
The chromosphere is a thin layer of the solar atmosphere that bridges the
relatively cool photosphere and the intensely heated transition region and
corona. Compressible and incompressible waves propagating through the
chromosphere can supply significant amounts of energy to the interface region
and corona. In recent years an abundance of high-resolution observations from
state-of-the-art facilities have provided new and exciting ways of
disentangling the characteristics of oscillatory phenomena propagating through
the dynamic chromosphere. Coupled with rapid advancements in
magnetohydrodynamic wave theory, we are now in an ideal position to thoroughly
investigate the role waves play in supplying energy to sustain chromospheric
and coronal heating. Here, we review the recent progress made in
characterising, categorising and interpreting oscillations manifesting in the
solar chromosphere, with an impetus placed on their intrinsic energetics.Comment: 48 pages, 25 figures, accepted into Space Science Review
Charge separation relative to the reaction plane in Pb-Pb collisions at TeV
Measurements of charge dependent azimuthal correlations with the ALICE
detector at the LHC are reported for Pb-Pb collisions at TeV. Two- and three-particle charge-dependent azimuthal correlations in
the pseudo-rapidity range are presented as a function of the
collision centrality, particle separation in pseudo-rapidity, and transverse
momentum. A clear signal compatible with a charge-dependent separation relative
to the reaction plane is observed, which shows little or no collision energy
dependence when compared to measurements at RHIC energies. This provides a new
insight for understanding the nature of the charge dependent azimuthal
correlations observed at RHIC and LHC energies.Comment: 12 pages, 3 captioned figures, authors from page 2 to 6, published
version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/286
A note on comonotonicity and positivity of the control components of decoupled quadratic FBSDE
In this small note we are concerned with the solution of Forward-Backward
Stochastic Differential Equations (FBSDE) with drivers that grow quadratically
in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem
is a comparison result that allows comparing componentwise the signs of the
control processes of two different qgFBSDE. As a byproduct one obtains
conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio
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