Hydrated electron generation by excitation of copper localized surface plasmon resonance

Hydrated electrons are important in radiation chemistry and chargetransfer reactions, with applications that include chemical damage of DNA, catalysis, and signaling. Conventionally, hydrated electrons are produced by pulsed radiolysis, sonolysis, two-ultraviolet-photon laser excitation of liquid water, or photodetachment of suitable electron donors. Here we report a method for the generation of hydrated electrons via single-visible-photon excitation of localized surface plasmon resonances (LSPRs) of supported sub-3 nm copper nanoparticles in contact with water. Only excitations at the LSPR maximum resulted in the formation of hydrated electrons, suggesting that plasmon excitation plays a crucial role in promoting electron transfer from the nanoparticle into the solution. The reactivity of the hydrated electrons was confirmed via proton reduction and concomitant H2 evolution in the presence of a Ru/ TiO2 catalyst

Institucionalización: abandono o la mejor opción

Introduction: The predominance of the aging population and the social and economic changes of today make it necessary for institutionalization to be an increasingly common resource in our country. This is accompanied by both positive and negative feelings by the geriatric patient and his relatives. The main objective of this review is to analyze the process of adaptation to institutionalization with the emotional and psychosocial changes that concern both the elderly and their environment. Material and methods: A search of articles in both Spanish and English is carried out in different databases such as PubMed and CINHAL and metasearch engines. A total of 19 articles are selected using the PICO strategy, including thesis and final degree projects. Results: Depression and dependence are the main problems that appear upon admission to the residential center. To address these, an assessment is carried out using scales following the patient’s own needs, thus personalizing the institutionalization care. Family dependence complicates adaptation to change. Discussion: At first, the image of the residence is usually negative, which changes over time. Depression decreases to more time of hospitalization when adapting to the center. It is important that the family respect the rules and maintain contact with the patient, as well as the intervention of the multidisciplinary team. Conclusions: Institutionalization is a great change for the elderly and their family, which will be overcome until they consider it their new home.Introducción: El predominio de la población envejecida y los cambios sociales y económicos de la actualidad, hacen preciso que la institucionalización sea un recurso cada vez más común en nuestro país. Esto viene acompañado de sentimientos tanto positivos como negativos por parte del paciente geriátrico y sus familiares. El objetivo principal de esta revisión es analizar el proceso de adaptación a la institucionalización con los cambios emocionales y psicosociales que atañen tanto al anciano como a su entorno. Material y métodos: Se realiza una búsqueda de artículos tanto en castellano como en inglés en distintas bases de datos como PubMed y CINHAL y metabuscadores. Se seleccionan un total de 19 artículos usando la estrategia PICO, incluyendo tesis y trabajos fin de grado. Resultados: La depresión y la dependencia son los principales problemas que aparecen al ingreso en el centro residencial. Para el abordaje de estos, se realiza una valoración mediante escalas siguiendo las necesidades propias del paciente, personalizando así los cuidados en la institucionalización. La dependencia familiar complica la adaptación al cambio. Discusión: En un primer momento, la imagen de la residencia suele ser negativa, la cual va cambiando con el tiempo. La depresión disminuye a mayor tiempo de internamiento al irse adaptando al centro. Es importante que la familia respete las normas y mantenga el contacto con el paciente, así como la intervención del equipo multidisciplinar. Conclusiones: La institucionalización supone un gran cambio para el anciano y su familia, el cual se irá superando hasta considerarlo su nuevo hogar

Reading and writing through research as a pedagogical strategy supported by TIC

Los procesos de lectoescritura son fundamentales en la enseñanza desde básica primaria para el desarrollo de las áreas del conocimiento. El estudio tuvo como propósito fortalecer los procesos de lectura y escritura a través de la investigación como estrategia pedagógica apoyada en las TIC. Se realizó un estudio de tipo cualitativo, con un modelo de investigación acción, desde un diseño descriptivo, exploratorio, de corte transversal. La población estuvo conformada por cuarenta (40) estudiantes de la IED Rafael Núñez del municipio de Algarrobo, Magdalena. Utilizando como técnicas de recolección, observación participante y diario de campo. Se evidencio un aumento en el interés de los estudiantes por la lectura y escritura al implementar el uso de las TIC como estímulo en sus habilidades comunicativas y orales. Se observaron avances significativos con la implementación de estas estrategias pedagógicas que impactan el proceso enseñanza-aprendizaje en forma positiva.Literacy processes are fundamental in teaching from elementary school to the development of knowledge areas. The purpose of the study was to strengthen the reading and writing processes through research as a pedagogical strategy supported by ICT. A qualitative study was carried out, with an action research model, from a descriptive, exploratory, cross-sectional design. The population was conformed by forty (40) students of the IED Rafael Núñez of the municipality of Algarrobo, Magdalena. Using as collection techniques, participant observation and field diary. There was an increase in students’ interest in reading and writing when implementing the use of ICT as a stimulus in their communication and oral skills. Significant advances were observed with the implementation of these pedagogical strategies that impact the teaching-learning process in a positive way

Plasma lipid profiles discriminate bacterial from viral infection in febrile children

Fever is the most common reason that children present to Emergency Departments. Clinical signs and symptoms suggestive of bacterial infection ar

Shoulder Pain in COVID-19 Survivors Following Mechanical Ventilation

COVID-19 has caused a certain proportion of patients to be hospitalized in intensive care units (ICU) and may cause musculoskeletal and neurological deficits following intubation and mechanical ventilation. The aim of this study was to quantify and describe the presence of shoulder pain in patients released from hospitals after suffering COVID-19. Patients with positive Apley tests were sent to a physiatrist for a clinical evaluation, ultrasound and electromyography (EMG). This evaluation was completed with a pain scale, joint range and shoulder muscle strength evaluations. Of the one-hundred-sixteen patients, seventy eight entered the respiratory rehabilitation program. Twenty patients were sent to the multidisciplinary shoulder team for positive Apley scratch tests. Of these twenty patients, one had only an EMG, ten had only ultrasounds, seven had an EMG and ultrasound and two did not need complementary tests. The twenty patients were sent to the physical therapist, with all presenting pain and diminished joint range and muscle strength in the affected shoulder. In this context, shoulder pain could be associated with the prone position in the ICU. We suggest time control and position change for patients on mechanical ventilation in a prone position with COVID-19

La pizarra digital en clase

Se desarrolla un proyecto de innovación educativa que pretende impulsar la innovación pedagógica en todos los niveles educativos mediante el uso de la pizarra digital, consiguiendo una mayor motivación en el alumnado. Se elaboran materiales en soporte informático e identifican páginas Web y materiales de interés educativo y pse promueve el aprovechamiento didáctico de los mismos y la atención a la diversidad en el aula. Se establecen y definen los conocimientos didácticos y tecnológicos que ha de tener el profesorado usuario de una pizarra digital y se identifican los problemas derivados de la utilización este sistema y se proponen soluciones. Se realizan sesiones formativas y ponencias para el profesorado participante en el proyecto de innovación. La experiencia ha favorecido el aprendizaje del alumnado y ha potenciado el uso por parte de los docentes de metodologías innovadoras que favorezcan el proceso de enseñanza aprendizaje .Castilla y LeónConsejería de Educación. Dirección General de Universidades e Investigación; Monasterio de Nuestra Señora de Prado, Autovía Puente Colgante s. n.; 47071 Valladolid; +34983411881; +34983411939ES

Multi-messenger Observations of a Binary Neutron Star Merger

International audienceOn 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of $\sim 1.7\,{\rm{s}}$ with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg(2) at a luminosity distance of ${40}_{-8}^{+8}$ Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 $\,{M}_{\odot }$. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at $\sim 40\,{\rm{Mpc}}$) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ∼10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position $\sim 9$ and $\sim 16$ days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC 4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta