Consideraciones preliminares

Algorithm of the qualifying paper development is presented. Periodical publications on ecological and chemmytological directions are systematize

Coexistence of vortex arrays and surface capillary waves in spinning prolate superfluid 4He nanodroplets

Within density functional theory, we have studied the interplay between vortex arrays and capillary waves in spinning prolate 4He droplets made of several thousand helium atoms. Surface capillary waves are ubiquitous in prolate superfluid 4He droplets, and depending on the size and angular momentum of the droplet, they may coexist with vortex arrays. We have found that the equilibrium configuration of small prolate droplets is vortex free, evolving towards vortex hosting as the droplet size increases. This result is in agreement with a recent experiment [O'Connell et al., Phys. Rev. Lett. 124, 215301 (2020)] that disclosed that vortex arrays and capillary waves coexist in the equilibrium configuration of very large drops. In contrast to viscous droplets executing rigid-body rotation, the stability phase diagram of spinning 4He droplets cannot be universally described in terms of dimensionless angular momentum and angular velocity variables: Instead, the rotational properties of superfluid helium droplets display a clear dependence on the droplet size and the number of vortices they host

Vorticity and quantum turbulence in the merging of superfluid helium nanodroplets

We have studied the merging of two identical ⁴He droplets at zero temperature, caused by their van der Waals mutual attraction. During the early stages of the merging, density structures appear which closely match the experimental observations by Vicente et al. [J. Low Temp. Phys. 121, 627 (2000)]. When the droplets are merging, quantized vortex-antivortex ring pairs nucleate at the surface and annihilate inside the merged droplet producing a roton burst. We also observe the nucleation of quantized vortex-antivortex rings that wrap the droplet surface and remain localized on the surface until they eventually decay into short-wavelength surface waves. Analysis of the kinetic energy spectrum discloses the existence of a regime where turbulence caused by vortex interaction and annihilation is characterized by a Kolmogorov power law. This is followed by another regime where roton radiation—produced by vortex-antivortex annihilation—dominates, whose hallmark is a weak, turbulent surface dynamics. We suggest that similar processes might appear in superfluid helium droplets after they capture impurities or if they are produced by hydrodynamic instability of a liquid jet. Experiments on collisions between recently discovered self-bound Bose-Einstein condensates should display a similar phenomenology

Anti-inflammatory activity in selected Antarctic benthic organisms

Antarctic benthos was prospected in search for anti-inflammatory activity in polar benthic invertebrates, in two different geographical areas: deep-bottoms of the Eastern Weddell Sea and shallow-waters of the South Shetland Islands. A total of 36 benthic algae and invertebrate species were selected to perform solubility tests in order to obtain extracts that were soluble at an innocuous ethanol concentration (0.2%) for cell culture, and further test them for anti-inflammatory activity. From these, ethanol extracts of ten species from five different phyla resulted suitable to be studied in cell macrophage cultures (RAW 264.7). Cytotoxicity (MTT method) and production of inflammatory mediators (prostaglandin E2, leukotriene B4, interleukin-1β) were determined at three extract concentrations (50, 125, 250 μg/mL). Bioassays resulted in four different species showing anti-inflammatory activity corresponding to three sponges: Mycale (Oxymycale) acerata, Isodictya erinacea, and I. toxophila; and one hemichordate: Cephalodiscus sp. These results show that Antarctic sessile invertebrates may have great value as a source of lead compounds with potential pharmaceutical applications

El proceso de supervisión en las prácticas de trabajo social

La supervisión en Trabajo Social es un proceso teórico-práctico fuertemente imbricado en el desarrollo la disciplina y que persigue incrementar las habilidades profesionales, las buenas prácticas y la calidad del trabajo con usuarios/as de los servicios de ayuda. Asimismo es una parte fundamental en el desarrollo de las prácticas pre-profesionales de los y las estudiantes de Trabajo Social que debe ayudarles no sólo a integrar conocimientos teóricos para comprender a la persona que precisa ayuda, sino que debe servir para desarrollar habilidades y competencias para ser más eficaces en la intervención. Paralelamente deben ayudarles desde la auto-reflexión a desvelar sus potencialidades y debilidades como personas en la construcción de la relación de ayuda. La supervisión académica de las prácticas pre-profesionales es un instrumento eficaz que contribuye a la eficacia de las prácticas de los y las estudiantes. Desde estas páginas proponemos un modelo de supervisión como proceso de ayuda que tiene como sujetos y actores no sólo a las y los estudiantes, sino a las personas usuarias de los servicios de ayuda

Experiencia de aplicación de guías docentes adaptadas a los criterios de convergencia educativa en educación superior para el segundo curso de la Diplomatura de Trabajo Social

La red “Red de Docencia de Calidad en Trabajo Social (REDCATS-Segundo curso)”, constituida en el curso 2003-2004 para diseñar las guías docentes de las asignaturas de segundo curso de la Diplomatura de Trabajo Social, tuvo continuidad durante el curso 2004-2005, con cambios en su composición, para aplicar los contenidos diseñados en las guías docentes de las asignaturas, y evaluar los resultados obtenidos. Para ello contó con el apoyo del Instituto de Ciencias de la Educación (Universidad de Alicante), a través de su Programa de Investigación Docente en Redes 2004-2005. En esta comunicación se da cuenta de los aspectos principales de la aplicación de las guías docentes durante el curso 2004-2005. Para ello, se hace un recorrido por: · El proceso de trabajo seguido por la red y por las asignaturas durante el curso 2004-2005. · Los resultados obtenidos, en términos de: rendimiento académico del alumnado; tiempo invertido y grado de dificultad encontrado; instrumentos de trabajo elaborados por la red (portafolio discente y docente). · Las conclusiones derivadas de la experiencia en las asignaturas, en las que se recogen tanto la visión de los estudiantes como la del profesorado. · Las propuestas de mejora de experiencias futuras.The research network named "Red de Estudio de la Docencia de Calidad en Trabajo Social (REDCATS-Segundo curso)", started its work in the 2003-2004 academic year with the aim of design the educational guides of the second year of the Bachelor in Social Work. The work has had continuity during 2004-2005 to apply the contents designed in the educational guides (syllabus) and to evaluate the results. In this task, the research network had the support of the Education’s Sciences Institute (University of Alicante), through its Research Networks Program in University Teaching 2004-2005. In this paper the network gives account of the main aspects of the application of the educational guides occurs during the 2004-2005 academic year. So, we explain: · The process of work followed by the network during that period. · The obtained results, in terms of: academic yield of the pupils; inverted time and degree of difficulty found; instruments of work elaborated by the network (student and teaching portfolio). · The conclusions of this experience, were we include both the vision of the students and the teaching staff perspective. · The proposals of improvement for future experiences

Experiencia de aplicación de guías docentes adaptadas a los criterios de convergencia educativa en educación superior para el segundo curso de la diplomatura de trabajo social

Experiencia de aplicación de guías docentes adaptadas a los criterios de convergencia educativa en educación superior para el segundo curso de la diplomatura de trabajo socia

Dynamic profiles and predictive values of some biochemical and haematological quantities in COVID-19 inpatients

Introduction: Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection in some hospitalized patients has shown some important alterations in laboratory tests. The aim of this study was to establish the most relevant quantities associated with the worst prognosis related to COVID-19. Materials and methods: This was a descriptive, longitudinal, observational and retrospective study, in a cohort of 845 adult inpatients from Bellvitge University Hospital (L'Hospitalet de Llobregat, Barcelona, Spain). A multivariate regression analysis was carried out in demographic, clinical and laboratory data, comparing survivors (SURV) and non-survivors (no-SURV). A receiver operating characteristic analysis was also carried out to establish the cut-off point for poor prognostic with better specificity and sensibility. Dynamic changes in clinical laboratory measurements were tracked from day 1 to day 28 after the onset of symptoms. Results: During their hospital stay, 18% of the patients died. Age, kidney disease, creatinine (CREA), lactate-dehydrogenase (LD), C-reactive-protein (CRP) and lymphocyte (LYM) concentration showed the strongest independent associations with the risk of death in the multivariate regression analysis. Established cut-off values for poor prognosis for CREA, LD, CRP and LYM concentrations were 75.0 mu mol/L, 320 U/L, 80.9 mg/L and 0.69 x10(9)/L. Dynamic profile of laboratory findings, were in agreement with the consequences of organ damage and tissue destruction. Conclusions: Age, kidney disease, CREA, LD, CRP and LYM concentrations in COVID-19 patients from the southern region of Catalonia provide important information for their prognosis. Measurement of LD has demonstrated to be very good indicator of poor prognosis at initial evaluation because of its stability over time

The CARBA-MAP study: national mapping of carbapenemases in Spain (2014–2018)

Introduction:Infections caused by carbapenem-resistant Enterobacterales (CRE) and carbapenem-resistant Pseudomonas aeruginosa, including isolates producing acquired carbapenemases, constitute a prevalent health problem worldwide. The primary objective of this study was to determine the distribution of the different carbapenemases among carbapenemase-producing Enterobacterales (CPE, specifically Escherichia coli, Klebsiella pneumoniae, Enterobacter cloacae complex, and Klebsiella aerogenes) and carbapenemase-producing P. aeruginosa (CPPA) in Spain from January 2014 to December 2018.Methods: A national, retrospective, cross-sectional multicenter study was performed. The study included the first isolate per patient and year obtained from clinical samples and obtained for diagnosis of infection in hospitalized patients. A structured questionnaire was completed by the participating centers using the REDCap platform, and results were analyzed using IBM SPSS Statistics 29.0.0.Results: A total of 2,704 carbapenemase-producing microorganisms were included, for which the type of carbapenemase was determined in 2692 cases: 2280 CPE (84.7%) and 412 CPPA (15.3%), most often using molecular methods and immunochromatographic assays. Globally, the most frequent types of carbapenemase in Enterobacterales and P. aeruginosa were OXA-48-like, alone or in combination with other enzymes (1,523 cases, 66.8%) and VIM (365 cases, 88.6%), respectively. Among Enterobacterales, carbapenemase-producing K. pneumoniae was reported in 1821 cases (79.9%), followed by E. cloacae complex in 334 cases (14.6%). In Enterobacterales, KPC is mainly present in the South and South-East regions of Spain and OXA-48-like in the rest of the country. Regarding P. aeruginosa, VIM is widely distributed all over the country. Globally, an increasing percentage of OXA-48-like enzymes was observed from 2014 to 2017. KPC enzymes were more frequent in 2017–2018 compared to 2014–2016.Discussion: Data from this study help to understand the situation and evolution of the main species of CPE and CPPA in Spain, with practical implications for control and optimal treatment of infections caused by these multi-drug resistant organisms