Y-stent-assisted coil embolization of anterior circulation aneurysms using two solitaire AB devices: a single enter experience

Wide-neck intracranial aneurysms remain a challenge to endovascular treatment. We describe our experience in repairing wide-neck aneurysms of the anterior circulation located at arterial branch points using coil embolization assisted by Y-stenting using two Solitaire® stents. Six wide-neck intracranial aneurysms located on the middle cerebral artery bifurcation 3, pericallosal artery 1, and anterior communicating artery 2 were repaired by Y-stent-assisted coil embolization using two Solitaire® stents. Four cases were incidental findings of aneurysm and two cases were previously treated ruptured aneurysms that had undergone recanalization. All the cases were successfully treated without complications. Follow-up by digital subtraction angiography and magnetic resonance angiography at six months showed the stents to be patent with no recanalization of the aneurysm sacs. Repairing wide-neck aneurysms of the anterior circulation by Y-stent-assisted coil embolization using two Solitaire® stents is a simple and safe method of treating complex aneurysms. While the results are promising, larger series with longer term follow-ups are needed to corroborate that this treatment method is superior to other technique

Inhibiting behavior of nitrites in corrosion of reinforcing steel in basic solutions simulating the electrolytic environments of micropores concrete in the initiation period

Measurements of the corrosion rate of corrugated steel bars have been carried out in solutions simulating electrolitic chloride enviroments in the micropores of concrete in the initiation period. It has been studied the effect of sodium nitrite as a corrosion inhibitor when added to the mentioned solutions. The solutions for the experiments were prepared by addition of different volumes of FeCl2 0.2 M into a saturated solution of calcium hydroxide until the target pH was reached in each case. This is the soluble compound produced during the corrosion of steel as a result of chloride attack.. It has been observed a significant improvement in using nitrite as inhibiting agent in these systems, but its efficiency decreases when the pH is reduced. The corrosion seems to be related to the [Cl - ]/[OH - ] ratio in three different regions of pH identified from acid to alkaline pH value

The Impact of Specific Viruses on Clinical Outcome in Children Presenting with Acute Heart Failure

Abstract: The presence and type of viral genomes have been suggested as the main etiology for inflammatory dilated cardiomyopathy. Information on the clinical implication of this finding in a large population of children is lacking. We evaluated the prevalence, type, and clinical impact of specific viral genomes in endomyocardial biopsies (EMB) collected between 2001 and 2013 among 63 children admitted to our hospital for acute heart failure (median age 2.8 years). Viral genome was searched by polymerase chain reaction (PCR). Patients underwent a complete two-dimensional echocardiographic examination at hospital admission and at discharge and were followed-up for 10 years. Twenty-seven adverse events (7 deaths and 20 cardiac transplantations) occurred during the follow-up. Viral genome was amplified in 19/63 biopsies (35%); PVB19 was the most commonly isolated virus. Presence of specific viral genome was associated with a significant recovery in ejection fraction, compared to patients without viral evidence (p < 0.05). In Cox-regression analysis, higher survival rate was related to virus-positive biopsies (p < 0.05). When comparing long-term prognosis among different viral groups, a trend towards better prognosis was observed in the presence of isolated Parvovirus B19 (PVB19) (p = 0.07). In our series, presence of a virus-positive EMB (mainly PVB19) was associated with improvement over time in cardiac function and better long-term prognosis

Análisis y representación virtual del Molino de Los Roses como modelo para la restauración de molinos de viento y recuperación del paisaje cultural del Campo de Cartagena

El paisaje cultural del Campo de Cartagena no se entiende sin la presencia de los molinos de viento. Se pueden diferenciar hasta cinco tipologías de molinos: el harinero (para moler grano), el espartero (para machacar esparto), de arcabuces (con noria interior o exterior) y dos tipos de salinero (para moler sal o para sacar agua); cada uno de ellos con unas características concretas. Por tanto, para poder acometer correctamente un proyecto de restauración integral de un molino de viento y fomentar así la recuperación del paisaje histórico y cultural de estas tierras debemos conocer perfectamente su tipología, materiales constructivos, componentes y funcionamiento, además, lógicamente, de todos sus valores histórico-culturales. Con esta idea básica, desde el Departamento de Arquitectura y Tecnología de la Edificación de la Universidad Politécnica de Cartagena se vienen desarrollando, en los últimos años, diversos trabajos de investigación con el objetivo final de desarrollar una metodología de estudio histórico-cultural, constructivo y del estado de conservación, así como contribuir al conocimiento y fomentar la difusión, restauración, conservación y puesta en valor de los molinos de viento de la Región de Murcia. La comunicación que se presenta a este Congreso se centra en uno de estos trabajos de investigación. Esta comunicación se centra en explicar qué equipos técnicos se han empleado y cómo se ha desarrollado tanto el trabajo de campo (croquización del molino y obtención de fotografías y referencias cartográficas), como el de laboratorio (análisis de los datos, tratamiento de imágenes digitales, desarrollo de ortoimágenes, aplicación de la fotogrametría…), para la elaboración de una representación virtual, con un video, que permite mostrar, explicar y entender, de manera gráfica y muy amena, qué elementos son los que componen y cómo funciona, en este caso, un molino de viento de arcabuces con el tambor interno, características propias del molino de Los Roses. El video, de gran valor pedagógico, muestra, en tres dimensiones, todos los elementos, despiezados y en conjunto; el espectador visualiza cómo, poco a poco, se van uniendo todas las piezas que conforman el sistema constructivo y que componen la maquinaria del molino, para terminar en la imagen completa del elemento arquitectónico, una imagen que, repetida a lo largo de la geografía del campo de Cartagena desarrolló “(…) uno de los paisajes más originales del Sureste español” (Preámbulo de la Ley 4/2007 del Patrimonio Cultural de la Región de Murcia). Un paisaje que debemos conocer, valorar, estudiar, difundir, recuperar y preservar como parte que es de nuestra identidad arquitectónica y cultural

Basement structure of the Hontomín CO2 Geological storage facility (Burgos, Spain): integration of microgravity & 3D seismic reflection data

The structure of the Hontomín CO2 geological storage research facility has been addressed combining 3D seismic reflection data, borehole information and microgravity data. The integrated interpretation constrains the basement structural setting geometry and that of the sedimentary succession. The study unravels the deep structure and topography of the basement and quantifies the thickness of the Triassic Keuper evaporites. We describe a half-graben setting filled with Keuper evaporites (up to 2000 m) forming an extensional forced fold. Three set of faults are identified with two main fault systems compartmentalizing the area into three differentiated blocks. These faults have been interpreted to be reactivated normal faults that have led to the formation of the Hontomín dome.The datasets in this work have been funded by Fundación Ciudad de la Energía (Spanish Government, www.ciuden.es) and by the European Union through the “European Energy Programme for Recovery” and the Compostilla OXYCFB300 project. Dr. Juan Alcalde is currently funded by NERC grant NE/M007251/1.Peer Reviewe