380 research outputs found
A fragment of a Greek novel? PMil I 2. 17 revisited
P.Mil. I 2. 17 has been interpreted as a mythical or historical text and even considered as a fragment of Timaeus of Tauromenion. It was labeled by López Martinez, Fragmentos papiráceos de novela griega, 1998 – number 39 of her edition – as valde incertum –. The text is interesting both from a linguistic point of view and for raising a question concerning the literary genre to whom it pertains. The purpose of this paper is to review the text and to deep in the study of its literary genre
Relacion de la comprension del discurso narrativo y memoria de trabajo en ninos escolares sin dificultades de lenguaje
73 p.Los niños sin dificultad en el lenguaje presentan caracterĂsticas heterogĂ©neas, tanto en la expresiĂłn como en la comprensiĂłn de esta, sin embargo, segĂşn distintos autores la capacidad de memoria influye en la comprensiĂłn del discurso. Existe gran controversia al momento de establecer si los sujetos escolares que no presentan dificultades de lenguaje tienen menor rendimiento en los aspectos cognitivos como en la memoria de trabajo. En este estudio se relaciona el desempeño en tareas de comprensiĂłn del discurso narrativo y tareas de memoria de trabajo en 20 niños escolares sin dificultades de lenguaje, que conformaron el grupo control, de7,0 y 7,11 años pertenecientes aprimero y segundo de enseñanza general básica, en un establecimiento de estrato socioeconĂłmico bajo de la ciudad de Talca. Los sujetos no presentan dificultades auditivas, cognitivas, y de lenguaje, esto ultimo segĂşn la Prueba de Desarrollo Inicial de Lenguaje (PDIL). Luego de realizar la investigaciĂłn y analizar los datos no se encontrĂł diferencia significativa con lo que se determina que no existe relaciĂłn entre ambas variables
Integrated Geophysical Methods for Shallow Aquifers Characterization and Modelling
info:eu-repo/semantics/publishedVersio
Integrated Geophysical Methods for Shallow Aquifers Characterization and Modelling
info:eu-repo/semantics/publishedVersio
Os jogos experimentais de sala de aula, uma ferramenta didática em cuidados paliativos
Objetivo Avaliar o efeito de um programa, baseado em jogos, sobre estudantes de enfermagem da disciplina cuidados paliativos, medindo o medo da morte por meio da Escala Collett-Lester. O desafio Ă© inovar e integrar, na sala de aula, teoria e experiĂŞncias prĂłximas ao contexto do luto. MĂ©todo Estudo quase-experimental. Realizaram os questionários 101 e 11 estudantes, antes e depois da intervenção dos jogos, respectivamente. Disciplina ministrada no primeiro semestre do terceiro ano. Resultados Os estudantes obtiveram valores mĂ©dios moderados na variável “medo da morte” (entre 14 e 19) para os dois momentos (prĂ© e pĂłs). Homens e mulheres aumentam esses valores de medo no pĂłs-teste, ao mesmo tempo que diminuem sua “percepção sobre preparo emocional”, evidenciando-se o valor dos jogos ao expor o estudante a situações prĂłximas Ă s reais. Conclusões Consideramos que a ferramenta didática dos jogos, aplicada no contexto da sala de aula, fornece ao estudante a oportunidade de reconhecer o medo que a proximidade da morte gera, tanto no doente e na famĂlia, quanto nele prĂłprio.Objective To evaluate the effect of a games-based intervention on palliative care nursing students’ scores on the Collett-Lester Fear of Death Scale. The challenge was to innovate and integrate grief-related theory and experiences into the classroom. Method Quasi-experimental study. Before and after the games-based intervention, 101 and 111 students completed the questionnaires, respectively. The intervention was performed in the context of a palliative care class taught during the first semester of the third year of the nursing programme. Results The students obtained moderate mean scores on the variable fear of death (between 14 and 19) at both time points (pre- and post-intervention). Both men and women indicated a heightened sense of fear post-intervention and a decrease in self-perceived emotional preparedness, which support the value of the games for exposing the student to situations that closely approximated reality. Conclusion The use of games as a didactic tool in the classroom context helped the students recognize the fear generated by proximity to death in the patient and family and in the student him- or herself.Objetivo Evaluar el efecto de un programa, basado en juegos, sobre estudiantes de enfermerĂa de la asignatura cuidados paliativos, midiendo el miedo a la muerte mediante la Escala Collett-Lester. El desafĂo es innovar, e integrar en el aula, teorĂa y experiencias cercanas al contexto de duelo. MĂ©todo Estudio cuasi-experimental. Realizaron los cuestionarios 101 y 111 estudiantes, antes y despuĂ©s de la intervenciĂłn de los juegos, respectivamente. Asignatura impartida en el primer semestre de tercer curso. Resultados Los estudiantes obtuvieron valores medios moderados en la variable “miedo a la muerte” (entre 14 y 19) para ambos momentos (pre y post). Hombres y mujeres aumentan estos valores de miedo en el post-test, a la vez que disminuyen su “percepciĂłn sobre preparaciĂłn emocional”, evidenciando el valor de los juegos, al exponer al estudiante a situaciones cercanas a las reales. ConclusiĂłn Consideramos que la herramienta didáctica de los juegos, aplicada en el contexto del aula, facilita que el estudiante pueda reconocer el miedo que genera la cercanĂa de la muerte, tanto en el enfermo y familia, como el propio
On conditional permutability and factorized groups
Two subgroups and of a group are said to be totally completely conditionally permutable (tcc-permutable) if permutes with for some , for all and all . In this paper, we study finite products of tcc-permutable subgroups, focussing mainly on structural properties of such products. As an application, new achievements in the context of formation theory are obtained.The third and fourth authors are supported by Proyecto MTM2010-19938-C03-02, Ministerio de Economia y Competitividad, Spain. The authors wish to thank Anatoly Kondratiev, and also Lev Kazarin, for many helpful ideas and comments to prove the main results of the paper.Arroyo Jordá, M.; Arroyo Jordá, P.; MartĂnez Pastor, A.; Perez Ramos, MD. (2014). On conditional permutability and factorized groups. Annali di Matematica Pura ed Applicata. 193(4):1123-1138. https://doi.org/10.1007/s10231-012-0319-1S112311381934Arroyo-Jordá, M., Arroyo-Jordá, P., MartĂnez-Pastor, A., PĂ©rez-Ramos, M.D.: On finite products of groups and supersolubility. J. Algebra 323, 2922–2934 (2010)Arroyo-Jordá, M., Arroyo-Jordá, P., MartĂnez-Pastor, A., PĂ©rez-Ramos, M.D.: A survey on some permutability properties on subgroups of finite groups. In: Proceedings of the Meeting on Group Theory and its Applications, Zaragoza, 10–11 June 2011, pp. 1–11. Biblioteca de la Revista Matemática Iberoamericana, Madrid (2012)Arroyo-Jordá, M., Arroyo-Jordá, P., PĂ©rez-Ramos, M.D.: On conditional permutability and saturated formations. Proc. Edinb. Math. Soc. 54, 309–319 (2011)Asaad, M., Shaalan, A.: On the supersolvability of finite groups. Arch. Math. 53, 318–326 (1989)Ballester-Bolinches, A., Esteban-Romero, R., Asaad, M.: Products of Finite Groups. 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SimulaciĂłn Computacional de la Tormenta Severa Ocurrida en Aranguren - Entre RĂos - Argentina
Muchos problemas de diseño en ingenierĂa están asociados al conocimiento del efecto del viento en las estructuras dispuestas a la intemperie. Las cargas por efecto del viento son uno de los parámetros de entrada necesarios para el cálculo. Generalmente este parámetro se selecciona en funciĂłn de la importancia de la obra a partir de las estadĂsticas de viento obtenidas de los registros de estaciones meteorolĂłgicas convencionales como las del Servicio MeteorolĂłgico Nacional. En el caso del diseño de las lĂneas de transmisiĂłn de energĂa elĂ©ctrica de alta tensiĂłn, existe la norma de la AEA (AsociaciĂłn ElectrotĂ©cnica Argentina) que especifica el valor que debe asignarse para la carga por efecto del viento en el diseño de los postes y cables en funciĂłn de la importancia de la lĂnea. La norma permite que este parámetro sea evaluado en cada regiĂłn a partir de registros locales de viento y estudios especĂficos. Existen numerosos trabajos referidos al estudio de vientos extremos en la RepĂşblica Argentina basados en las estadĂsticas meteorolĂłgicas, sin embargo, estas estaciones de mediciĂłn están muy dispersas geográficamente y existe cierta incertidumbre en la utilizaciĂłn de estos mĂ©todos, sobre todo en los casos de relieve complejo, ya que las estadĂsticas de viento son confeccionadas utilizando el valor de velocidad media en zonas de terreno llano. Este trabajo muestra la utilizaciĂłn de las tĂ©cnicas de SimulaciĂłn de las Grandes Escalas como un aporte al estudio del problema, desde un punto de vista más dinámico. Se utilizĂł un cĂłdigo de SimulaciĂłn de las Grandes Escalas denominado Advanced Regional Prediction System (ARPS) desarrollado por la Universidad de Oklahoma y el Centro de Análisis y PredicciĂłn de Tormentas (CAPS) de Estados Unidos para simular un evento de tormentas severas que produjo el colapso de una lĂnea de transmisiĂłn de energĂa de 132 KV en cercanĂas de la ciudad de Aranguren (Argentina) el 27 de enero de 1998. Este cĂłdigo permite simular no sĂłlo el campo de viento sino que posee submodelos de cambios de fase del agua y flujos de energĂa entre la superficie del suelo y la capa lĂmite atmosfĂ©rica. De los resultados del análisis del campo de viento simulado se desprende que la velocidad máxima que se obtiene en el sitio de colapso es mayor que el valor utilizado para el diseño de la misma. Además, se observan variaciones repentinas en la direcciĂłn del viento de casi 180° en menos de 1 minuto producto de la superposiciĂłn de las corrientes descendentes de nubes convectivas vecinas.Fil: Aguirre, Cesar Augusto. Provincia de Entre RĂos. Centro de Investigaciones CientĂficas y Transferencia de TecnologĂa a la ProducciĂłn. Universidad AutĂłnoma de Entre RĂos. Centro de Investigaciones CientĂficas y Transferencia de TecnologĂa a la ProducciĂłn. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Centro de Investigaciones CientĂficas y Transferencia de TecnologĂa a la ProducciĂłn; Argentina. Universidad TecnolĂłgica Nacional. Facultad Regional Paraná; ArgentinaFil: Paz, Rodrigo Rafael. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Centro de Investigaciones en MĂ©todos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en MĂ©todos Computacionales; ArgentinaFil: MartĂnez Fayo, Jose Maria. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Centro de Investigaciones en MĂ©todos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en MĂ©todos Computacionales; ArgentinaFil: Rearte, German. Universidad TecnolĂłgica Nacional. Facultad Regional Paraná; ArgentinaFil: Brizuela, Armando Benito. Provincia de Entre RĂos. Centro de Investigaciones CientĂficas y Transferencia de TecnologĂa a la ProducciĂłn. Universidad AutĂłnoma de Entre RĂos. Centro de Investigaciones CientĂficas y Transferencia de TecnologĂa a la ProducciĂłn. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Centro de Investigaciones CientĂficas y Transferencia de TecnologĂa a la ProducciĂłn; Argentin
Integrated MASW and ERT Imaging for Geological Definition of an Unconfined Alluvial Aquifer Sustaining a Coastal Groundwater-Dependent Ecosystem in Southwest Portugal
This paper integrates multichannel analysis of surface waves (MASW) and time-lapse electrical resistivity tomography (ERT) to define aquifer geometry and identify transient groundwater features of the Cascalheira Stream Basin Holocene alluvial aquifer (aquifer H), which contributes to the Santo André Lagoon, part of a coastal groundwater-dependent ecosystem (GDE), located in southwest Portugal. MASW measures shear-wave velocity (VS), allowing one to obtain steady geological models of the subsurface, and ERT measures subsurface electrical resistivity (ER), being subjected to ambient changes. MASW enables disambiguation of geological structures in low ER environments, such as coastal areas. This research covered one natural year and involved one MASW campaign, four ERT campaigns, and additional geological field surveys and groundwater monitoring to assist interpretation of results. In the area, the conjugate NW–SE and NE–SW strike-slip fault systems determine compartmentalization of geological structures and subsequent accommodation space for Holocene sedimentation. MASW and ERT surveys show how the NW–SE system deepens these structures toward the coast, whereas the NE–SW system generates small horsts and grabens, being one of these occupied by aquifer H. From upstream to downstream, aquifer H thickness and width increase from 10 m to 12 m and from 140 m to 240 m, respectively. Performance of VS and ER models was satisfactory, with a normalized error of the VR and ER models in the 0.01–0.09 range, meaning that a quantitative quota of uncertainty can be segregated from the overall uncertainty of groundwater models without substantially affecting its simulations accuracy. This methodology seeks to improve the design of shallow groundwater research in GDE preservation policies.info:eu-repo/semantics/publishedVersio
Metal-free catalyzed ring-opening polymerization and block copolymerization of Âż-pentadecalactone using amino-ended initiators
Metal-free catalysis was successfully applied to polymerize ¿-pentadecalactone (PDL) by ring-opening polymerization (ROP) using several amino-ended initiators, namely hexylamine, allylamine and O,O'-bis(3-aminopropyl)diethylene glycol. This polymerization method was suitable to prepare telechelic polyesters carrying functional-end groups. The technique was then extended to the synthesis of block copolymers by ROP of PDL using bisamino-ended poly(ethylene glycol) (Mn¿=¿2600) as macroinitiator. PPDLx-PEG56-PPDLx triblock copolymers with Mn ranging between ~4000 and ~90,000¿g¿·mol-1 were synthesized and extensively characterized by NMR, DSC, TGA and XRD. The amphiphilic copolymers thus produced were demonstrated to be able to self-assemble in nanoparticles with average diameters of ~100–200¿nm and morphologies highly depending on blocks lengths. The described synthetic route distinguishes in providing “clean” amphiphilic copolymers, which are attractive candidates for biomedical applications.Peer ReviewedPostprint (author's final draft
Untargeted metagenomic sequencing identifies Toscana virus in patients with idiopathic meningitis, southern Spain, 2015 to 2019
Background: Various pathogens, including bacteria, fungi, parasites, and viruses can lead to meningitis. Among viruses causing meningitis, Toscana virus (TOSV), a phlebovirus, is transmitted through sandfly bites. TOSV infection may be suspected if patients with enterovirus- and herpesvirus-negative aseptic (non-bacterial) meningitis recall recent insect bites. Other epidemiological factors (season, rural area) may be considered. The broad range of possible meningitis aetiologies poses considerable diagnosis challenges. Untargeted metagenomic next-generation sequencing (mNGS) can potentially identify pathogens, which are not considered or detected in routine diagnostic panels. Aim: In this retrospective, single-centre observational study, we investigated mNGS usefulness to understand the cause of meningitis when conventional approaches fail. Methods: Cerebrospinal fluid (CSF) samples from patients hospitalised in southern Spain in 2015-2019 with aseptic meningitis and no aetiology found by conventional testing, were subjected to mNGS. Patients' demographic characteristics had been recorded and physicians had asked them about recent insect bites. Obtained viral genome sequences were phylogenetically analysed. Results: Among 23 idiopathic cases, TOSV was identified in eight (all male; median age:  39 years, range: 15-78 years). Five cases lived in an urban setting, three occurred in autumn and only one recalled insect bites. Phylogenetic analysis of TOSV segment sequences supported one intra-genotype reassortment event. Conclusions: Our study highlights the usefulness of mNGS for identifying viral pathogens directly in CSF. In southern Spain, TOSV should be considered regardless of recalling of insect bites or other epidemiological criteria. Detection of a disease-associated reassortant TOSV emphasises the importance of monitoring the spread and evolution of phleboviruses in Mediterranean countries.ESL laboratory received funding from Institut Pasteur, from the INCEPTION programme (Investissements d’Avenir grant ANR-16-CONV-0005), from the NIH PICREID program (Award Number U01AI151758) and from the Labex IBEID (ANR-10-LABX-62-IBEID). MDFG acknowledges funding from the Junta de Andalucia (PI-0216-2019) and Instituto de Salud Carlos III (Acción Estratégica en Salud Intramural PI20CIII/00005).S
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