Polymeric foams as the matrix of voltammetric sensors for the detection of catechol, hydroquinone, and their mixtures

Producción CientíficaPorous electrodes based on polymethylmethacrylate and graphite foams (PMMA_G_F) have been developed and characterized. Such devices have been successfully used as voltammetric sensors to analyze catechol, hydroquinone, and their mixtures. The presence of pores induces important changes in the oxidation/reduction mechanism of catechol and hydroquinone with respect to the sensing properties observed in nonfoamed PMMA_graphite electrodes (PMMA_G). The electropolymerization processes of catechol or hydroquinone at the electrode surface observed using PMMA_G do not occur at the surface of the foamed PMM_G_F. In addition, the limits of detection observed in foamed electrodes are one order of magnitude lower than the observed in the nonfoamed electrodes. Moreover, foamed electrodes can be used to detect simultaneously both isomers and a remarkable increase in the electrocatalytic properties shown by the foamed samples, produces a decrease in the oxidation potential peak of catechol in presence of hydroquinone, from +0.7 V to +0.3 V. Peak currents increased linearly with concentration of catechol in presence of hydroquinone over the range of 0.37·10−3 M to 1.69·10−3 M with a limit of detection (LOD) of 0.27 mM. These effects demonstrate the advantages obtained by increasing the active surface by means of porous structures.Ministerio de Economía, Industria y Competitividad - Fondo Europeo de Desarrollo Regional (project AGL2015-67482-R)Junta de Castilla y Leon - Fondo Europeo de Desarrollo Regional (project VA-011U16

Inertial Stabilization Controller for a 2 DOF Platform

6TH IFAC SYMPOSIUM ON COST ORIENTED AUTOMATION - LCA 2001 () (.2001.BERLIN, ALEMANIA)This paper presents the controller design for the stabilization of a platform of two degrees of freedom. The purpose of this application it is to control the velocities, which are measured in a inertial frame, rejecting the disturbances associated with moving components. A gain-scheduling controller based strategy is proposed, by way of which the desired specifications are accomplished.Ministerio de Ciencia y Tecnología TAP-98-0541Unión Europea 1FD97-078

Aportación al estudio micosociológico de la provincia de León

Se muestran los resultados de algunas excursiones y el catálogo de las especies de macromicetes recolectadas en cada localidad.We show the results of some excursions with the catalogue of species rellected in each place

Maritime Climate in the Canary Islands and its Implications for the Construction of Coastal Infrastructures

Islands are isolated systems that depend on maritime trade for their subsistence. Efficient, durable and structurally reliable port infrastructures are essential for the economic and social development of islands. However, not all port infrastructures are designed in the same way. They can vary, depending on whether they are built on continental land, built on non-volcanic islands or built on volcanic oceanic islands (such as the Canary Islands, Spain). The latter islands are the subject of this study due to their specific features, construction difficulties and the importance of sound maritime infrastructures. The maritime climate of an area consists of the wave and storm regimes that affect it and, from these, the coastal dynamics and coastal formations of that area can be studied. For this reason, historical data were collated on significant directional wave heights from 1958 to 2015 from several WANA-SIMAR points in the virtual buoy network of State Ports of Spain located near the Canary Islands. These data have been studied to obtain the maximum directional wave heights (Hs) at each point. With this analysis, we have obtained useful summary tables to calculate wave height by a graphic method that transforms the distribution function into a line drawn on probabilistic paper, using reduced variables. This enables adjustments to be made by linear regression and minimum square methods to facilitate planning and design of maritime infrastructures in a reliable way. Doi: 10.28991/CEJ-2022-08-01-02 Full Text: PD

Fístula colovesical secundaria a enfermedad diverticular: cirugía laparoscópica electiva

Indexación: Web of Science; ScieloAim: Colovesical fistula is a severe complication associated to neoplastic or inflammatory colon disease. Most common procedure is open surgery. We report a case of colovesical fistula secondary to diverticular disease treated with a laparoscopic approach. Methods: A 64-year-old man was seen with a known colonic diverticular disease, type 2 diabetes mellitus and recurrent urinary tract infection. He complained of lower abdominal pain, dysuria, and pneumaturia. A CT scan revealed a sigmoid diverticular perforation into the bladder (colovesical fistula). A left hemicolectomy with partial cystectomy was performed by laparoscopy means. Results: There was no morbidity related to the surgical procedure, and the final pathology confirmed a colonic diverticular disease with bladder compromise. The patient is asymptomatic at 24 months of follow up. Conclusion: The laparoscopic approach is a feasible alternative for the treatment of colovesical fistula with low morbidity.Objetivos: La fístula colovesical es una complicación relacionada con procesos inflamatorios y neoplá-sicos del colon. El manejo tradicional de esta patología es quirúrgico bajo técnica abierta. Presentamos un caso de fístula colovesical secundaria a enfermedad diverticular con tratamiento quirúrgico laparoscópico. Materiales y Métodos: Paciente masculino de 64 años de edad, portador de enfermedad diverticular de larga data con antecedente de diabetes mellitus tipo 2 e infecciones urinarias a repetición, quien consulta por presentar dolor en hipogastrio, disuria y neumaturia. Se realiza tomografía computada que revela perforación diverticular de colon sigmoides a vejiga (fístula colovesical). Se realizó hemicolectomía izquierda más cistectomía parcial, con resección del trayecto fistuloso, y cierre vesical y anastomosis colónica laparoscópica. Resultados: No hubo complicaciones intra ni postoperatorias. El estudio anatomopatológico de la pieza operatoria demostró enfermedad diverticular. El paciente se encuentra asintomático a los 24 meses de seguimiento. Conclusión: El abordaje laparoscópico es una alternativa factible para el tratamiento de fístula colovesical, con baja morbilidad.http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-40262012000300010&nrm=is

Enhanced recovery after surgery pathways in thoracic surgery, do they end at discharge?

Fast track pulmonary resection protocols have shown to be feasible and to improve hospital related costs, shortening length of stay and maintaining quality of care (1-4). Despite the increasing number of scientific literature addressing the benefits of specific lobectomy pathways (4,5) and the recent publication of Enhanced Recovery after Surgery (ERAS®) guidelines in thoracic surgery (4-6) the truth is that the description of most of these interventions ends at patients’ discharge, with no clear indications for follow up or measures to prevent unintended hospital readmissions (2,3

Application of miRNA-seq in neuropsychiatry: A methodological perspective

MiRNAs are emerging as key molecules to study neuropsychiatric diseases. However, despite the large number of methodologies and software for miRNA-seq analyses, there is little supporting literature for researchers in this area. This review focuses on evaluating how miRNA-seq has been used to study neuropsychiatric diseases to date, analyzing both the main findings discovered and the bioinformatics workflows and tools used from a methodological perspective. The objective of this review is two-fold: first, to evaluate current miRNA-seq procedures used in neuropsychiatry; and second, to offer comprehensive information that can serve as a guide to new researchers in bioinformatics. After conducting a systematic search (from 2016 to June 30, 2020) of articles using miRNA-seq in neuropsychiatry, we have seen that it has already been used for different types of studies in three main categories: diagnosis, prognosis, and mechanism. We carefully analyzed the bioinformatics workflows of each study, observing a high degree of variability with respect to the tools and methods used and several methodological complexities that are identified and discussed in this reviewInstituto de Salud Carlos III | Ref. PI18/01311Ministerio de Economía y Competitividad | Ref. RYC2014-15246Xunta de Galicia | Ref. ED431C2018/55-GR

Enfoques de las noticias y legitimidad mediática: estudio exploratorio de la cobertura de la crisis de refugiados en la Unión Europea

Esta investigación se centra en un tipo específico de legitimidad, la mediática, que tiene que ver con los juicios que elaboran los medios de comunicación sobre la legitimidad de las organizaciones y explora la relación entre los tipos de frames (episódicos y temáticos) propuestos por Iyengar (1994) y las tipologías de legitimidad moral propuestas por Suchman (1995): legitimidad consecuencial, procedimental, estructural y personal. El objeto de análisis empírico es la crisis de los refugiados (2015-2016) en la Unión Europea. La legitimidad descansa en el consentimiento de autoridad y de poder. Los medios de comunicación, con sus enfoques de las noticias, pueden moldear las opiniones y actitudes políticas de los ciudadanos y, en consecuencia, los juicios de legitimidad sobre las organizaciones públicas. Se realizó un análisis de contenido con el que poder medir la presencia y ausencia de las tipologías de legitimidad y conocer la relación con los tipos de frames episódicos o temáticos así como el sentido de valoración mediante el coeficiente Janis-Fadner. Esta investigación sugiere que si bien las cuatro tipologías de legitimidad están presentes en la cobertura noticiosa, la procedimental es más episódica que las demás, como también más negativa. La investigación constata la importancia que tiene la gestión de los procesos a la hora de influir en la legitimidad de una organización, y subraya la importancia de la gestión de la comunicación de los procesos de las políticas públicas. Con apoyo en los resultados se formulan hipótesis para futuras investigaciones sobre la atribución de responsabilidades.This research project focuses on a specific type of legitimacy, media legitimacy, which deals with the judgements made by the media about the legitimacy of organisations and explores the relationship between the types of frames (episodic and thematic) proposed by Iyengar (1994) and the typologies of moral legitimacy proposed by Suchman (1995): consequential, procedural, structural, and personal legitimacy. The subject of this empirical analysis will be the refugee crisis (2015-2016) in the European Union. Legitimacy rests on the consent of authority and power. Media framing can shape the opinions and political attitudes of citizens and, consequently, judgements of the legitimacy of public organisations. A content analysis was performed to measure the presence and absence of the types of legitimacy and understand the relationship with the types of episodic or thematic frames as well as the sense of appraisal using the Janis-Fadner coefficient. This research suggests that while the four types of legitimacy are present in news coverage, procedural legitimacy is more prevalent than the others, as well as more negative. This research notes the importance of process management in influencing the legitimacy of an organisation, and underlines the importance of managing the communication of public policy processes. The supporting results develop hypotheses for future research on the attribution of responsibility