Conformación de un espacio de aprendizaje para el abordaje computacional de problemas de la Física y otras disciplinas

El rol de los recursos informáticos en el de$arrollo de las diversas disciplinas científicas ha originado nuevos enfoques en el tratamiento y en la resolución de los problemas derivados de las mismas. Más aún, la complejidad de los distintos. sistemas que hoy se estudian exige una formulación, en muchos casos, estrictamente algorítmica. Pero este ,desarrollo en el campo profesional no ha modificado el abordaje de la enseñanza de las ciencias en general y de la físicos en particular. En este trabajo se presenta una experiencia en desarrollo cuyo objetivo es incorporar la formulación algorítmica en el análisis de los fenómenos físicos. En particular, se describe la conformación y características de un espacio de aprendizaje para el logro de este objetivo.IV Ateneo de Profesores Universitarios de Computación y SistemasRed de Universidades con Carreras en Informática (RedUNCI

Conformación de un espacio de aprendizaje para el abordaje computacional de problemas de la Física y otras disciplinas

El rol de los recursos informáticos en el de$arrollo de las diversas disciplinas científicas ha originado nuevos enfoques en el tratamiento y en la resolución de los problemas derivados de las mismas. Más aún, la complejidad de los distintos. sistemas que hoy se estudian exige una formulación, en muchos casos, estrictamente algorítmica. Pero este ,desarrollo en el campo profesional no ha modificado el abordaje de la enseñanza de las ciencias en general y de la físicos en particular. En este trabajo se presenta una experiencia en desarrollo cuyo objetivo es incorporar la formulación algorítmica en el análisis de los fenómenos físicos. En particular, se describe la conformación y características de un espacio de aprendizaje para el logro de este objetivo.IV Ateneo de Profesores Universitarios de Computación y SistemasRed de Universidades con Carreras en Informática (RedUNCI

Distribution of anionic and nonionic surfactants in a sewage-impacted Mediterranean coastal lagoon: Inputs and seasonal variations

In this work we have monitored the seasonal inputs, occurrence and distribution of the world’s most widely used surfactants (linear alkylbenzene sulfonates, LAS, nonylphenol polyethoxylates, NPEOs, and alcohol polyethoxylates, AEOs) in Mar Menor lagoon (SE Spain) and its main tributary (El Albujón) for the first time. Concentration of target compounds was determined in both surface waters and sediments after solid phase extraction and pressurized liquid extraction, respectively, followed by liquid chromatography-mass spectrometry (LC-MS). There were significant differences in surfactant fluxes from El Albujón towards Mar Menor depending on the season and the day of the week, with maximum estimated annual inputs being detected for LAS (406 kg) and their metabolites, sulfophenyl carboxylic acids (482 kg). Average concentrations of surfactants in the lagoon were between 44 and 1665 µg/kg in sediment, and between 0.3 and 63 µg/L in water. These levels were significantly higher for samples collected near the shore than for those measured inside the lagoon itself. Overall, the occurrence and distribution of surfactants in the system could be explained due to a combination of different sources (surface and groundwater inputs, treated and untreated wastewater effluents, towns, ports, etc.) and simultaneous in-situ physicochemical and biological processes, with an special emphasis on degradation during warmer months.En prensa3,258

Patología neurológica por desequilibrio de vitaminas liposolubles

Introducción: en la práctica clínica hospitalaria nos enfrentamos a algunas patologías que tienen origen nutricional. Aunque rara vez, las alteraciones vitamínicas pueden desencadenar trastornos neurológicos graves. Objetivos: mostrar los síntomas neurológicos que pueden darse por alteraciones en los niveles de las vitaminas liposolubles, centrándonos en las vitaminas E y A, mediante la exposición de dos casos clínicos. Conclusiones: es importante tener en mente las alteraciones de vitaminas liposolubles como origen de un trastorno neurológico, a pesar de su escasa frecuencia, habiendo descartado primero las causas más probables.Background: the clinicians rarely have to cope with diseases of nutritional origin and scarcely, although possible, vitamins alterations produce neurological symptoms. Objectives: to show, based on two clinical cases, the neurological symptoms due to liposoluble vitamins alterations, focusing on vitamins E and A. Conclusions: it is important to consider liposoluble vitamin alterations as a cause of neurological symptoms, despite their rarity, after rolling out the most probable entities

Physics of Eclipsing Binaries: Heartbeat Stars and Tidally Induced Pulsations

Heartbeat stars are a relatively new class of eccentric ellipsoidal variable first discovered by Kepler. An overview of the current field is given with details of some of the interesting objects identified in our current Kepler sample of 135 heartbeats stars. Three objects that have recently been or are undergoing detailed study are described along with suggestions for further avenues of research. We conclude by discussing why heartbeat stars are an interesting new tool to study tidally induced pulsations and orbital dynamics

Lafora Disease Is an Inherited Metabolic Cardiomyopathy

This work was supported by grants from the Spanish Ministry of Economy and Competitiveness (SAF2015-65722-R to Dr. Lara-Pezzi and SAF2014-59594-R to Dr. Serratosa), Autonomous Community of Madrid (2010-BMD2321, FIBROTEAM Consortium), European Union's FP7 (CardioNeT-ITN-289600, CardioNext-ITN-608027), the Spanish Carlos III Institute of Health (CPII14/00027 to Dr. Lara-Pezzi, PI13/00865 to Dr. Sanchez and RD12/0042/066 to Drs. Garcia-Pavia and Lara-Pezzi), and the National Institute of Neurological Disorders And Stroke of the National Institutes of Health (P01NS097197 to Dr. Sanchez). This work was also supported by the Plan Estatal de I+D+I 2013-2016-European Regional Development Fund (FEDER) "A way of making Europe," Spain. The Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC) is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) and the Pro-CNIC Foundation, and is a Severo Ochoa Center of Excellence (MINECO award SEV-2015-0505).S

BUB-1 targets PP2A:B56 to regulate chromosome congression during meiosis I in C. elegans oocytes

Protein Phosphatase 2A (PP2A) is a heterotrimer composed of scaffolding (A), catalytic (C), and regulatory (B) subunits. PP2A complexes with B56 subunits are targeted by Shugoshin and BUBR1 to protect centromeric cohesion and stabilise kinetochore-microtubule attachments in yeast and mouse meiosis. In Caenorhabditis elegans, the closest BUBR1 orthologue lacks the B56-interaction domain and Shugoshin is not required for meiotic segregation. Therefore, the role of PP2A in C. elegans female meiosis is unknown. We report that PP2A is essential for meiotic spindle assembly and chromosome dynamics during C. elegans female meiosis. BUB-1 is the main chromosome-targeting factor for B56 subunits during prometaphase I. BUB-1 recruits PP2A:B56 to the chromosomes via a newly identified LxxIxE motif in a phosphorylation-dependent manner, and this recruitment is important for proper chromosome congression. Our results highlight a novel mechanism for B56 recruitment, essential for recruiting a pool of PP2A involved in chromosome congression during meiosis I

Variations in concerns reported on the Patient Concerns Inventory (PCI) in head and neck cancer patients from different health settings across the world

Background: The aim was to collate and contrast patient concerns from a range of different head and neck cancer follow-up clinics around the world. Also, we sought to explore the relationship, if any, between responses to the patient concerns inventory (PCI) and overall quality of life (QOL). Methods: Nineteen units participated with intention of including 100 patients per site as close to a consecutive series as possible in order to minimize selection bias. Results: There were 2136 patients with a median total number of PCI items selected of 5 (2-10). “Fear of the cancer returning” (39%) and “dry mouth” (37%) were most common. Twenty-five percent (524) reported less than good QOL. Conclusion: There was considerable variation between units in the number of items selected and in overall QOL, even after allowing for case-mix variables. There was a strong progressive association between the number of PCI items and QOL

MicroRNA expression profiling and DNA methylation signature for deregulated microRNA in cutaneous T-cell lymphoma

MicroRNAs usually regulate gene expression negatively, and aberrant expression has been involved in the development of several types of cancers. Microarray profiling of microRNA expression was performed to define a microRNA signature in a series of mycosis fungoides tumor stage (MFt, n=21) and CD30+ primary cutaneous anaplastic large cell lymphoma (CD30+ cALCL, n=11) samples in comparison with inflammatory dermatoses (ID, n=5). Supervised clustering confirmed a distinctive microRNA profile for cutaneous T-cell lymphoma (CTCL) with respect to ID. A 40 microRNA signature was found in MFt including upregulated onco-microRNAs (miR-146a, miR-142-3p/5p, miR-21, miR-181a/b, and miR-155) and downregulated tumor-suppressor microRNAs (miR-200ab/429 cluster, miR-10b, miR-193b, miR-141/200c, and miR-23b/27b). Regarding CD30+ cALCL, 39 differentially expressed microRNAs were identified. Particularly, overexpression of miR-155, miR-21, or miR-142-3p/5p and downregulation of the miR-141/200c clusters were observed. DNA methylation in microRNA gene promoters, as expression regulatory mechanism for deregulated microRNAs, was analyzed using Infinium 450K array and approximately one-third of the differentially expressed microRNAs showed significant DNA methylation differences. Two different microRNA methylation signatures for MFt and CD30+ cALCL were found. Correlation analysis showed an inverse relationship for microRNA promoter methylation and microRNA expression. These results reveal a subgroup-specific epigenetically regulated microRNA signatures for MFt and CD30+ cALCL patients