2,612 research outputs found

    Methodological and terminological issues in animal-assisted interventions: An umbrella review of systematic reviews

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    Recently, animal-assisted interventions (AAIs), which are defined as psychological, educational, and rehabilitation support activities, have become widespread in different contexts. For many years, they have been a subject of interest in the international scientific community and are at the center of an important discussion regarding their effectiveness and the most appropriate practices for their realization. We carried out an umbrella review (UR) of systematic reviews (SRs), created for the purpose of exploring the literature and aimed at deepening the terminological and methodological aspects of AAIs. It is created by exploring the online databases PubMed, Google Scholar, and Cochrane Library. The SRs present in the high-impact indexed search engines Web of Sciences and Scopus are selected. After screening, we selected 15 SRs that met the inclusion criteria. All papers complained of the poor quality of AAIs; some considered articles containing interventions that did not always correspond to the terminology they have explored and whose operating practices were not always comparable. This stresses the need for the development and consequent diffusion of not only operational protocols, but also research protocols which provide for the homogeneous use of universally recognized terminologies, thus facilitating the study, deepening, and comparison between the numerous experiences described

    Optimized production of large Bose Einstein Condensates

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    We suggest different simple schemes to efficiently load and evaporate a ''dimple'' crossed dipolar trap. The collisional processes between atoms which are trapped in a reservoir load in a non adiabatic way the dimple. The reservoir trap can be provided either by a dark SPOT Magneto Optical Trap, the (aberrated) laser beam itself or by a quadrupolar or quadratic magnetic trap. Optimal parameters for the dimple are derived from thermodynamical equations and from loading time, including possible inelastic and Majorana losses. We suggest to load at relatively high temperature a tight optical trap. Simple evaporative cooling equations, taking into account gravity, the possible occurrence of hydrodynamical regime, Feshbach resonance processes and three body recombination events are given. To have an efficient evaporation the elastic collisional rate (in s1^{-1}) is found to be on the order of the trapping frequency and lower than one hundred times the temperature in micro-Kelvin. Bose Einstein condensates with more than 10710^7 atoms should be obtained in much less than one second starting from an usual MOT setup.Comment: 14 page

    Sustainable landscape in arid zones : useful ornamental xeric species

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    Se analiza el valor económico, ecológico y paisajístico de especies vegetales, pertenecientes a la flora espontánea de Mendoza (Argentina), resistentes a la sequía y que pueden alcanzar porte arbóreo. Su empleo ahorra agua de riego en espacios verdes ornamentales y de protección ambiental. Se sugiere medidas de conservación de las especies espontáneas más útiles paisajísticamente, así como normas generales sobre métodos de plantación y mantenimiento. Se recomiendan especies leñosas espontáneas de la provincia, de bajo requerimiento hídrico, utilizables paisajísticamente.This paper analyzes the economic, ecological and landscape value of drought resistant species from the spontaneous flora of Mendoza (Argentina). Some of such species could reach tree size and its use might save the irrigation water used for ornamental and environmental protection areas. Actions to protect the most useful spontaneous species, as well as general rules for plantation and maintenance are suggested. Spontaneous wooden species of low water requirements, to use in different landscape objectives, are recommended.Fil: Codina, Ramón A.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Manzano, Enrique R.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Carrieri, Sergio A.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Fioretti, Sonia B.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción Agropecuari

    Observation of a resonant four-body interaction in cold cesium Rydberg atoms

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    Cold Rydberg atoms subject to long-range dipole-dipole interactions represent a particularly interesting system for exploring few-body interactions and probing the transition from 2-body physics to the many-body regime. In this work we report the direct observation of a resonant 4-body Rydberg interaction. We exploit the occurrence of an accidental quasi-coincidence of a 2-body and a 4-body resonant Stark-tuned Forster process in cesium to observe a resonant energy transfer requiring the simultaneous interaction of at least four neighboring atoms. These results are relevant for the implementation of quantum gates with Rydberg atoms and for further studies of many-body physics.Comment: 5 pages, 5 figure

    Simbol-X Background Minimization: Mirror Spacecraft Passive Shielding Trade-Off Study

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    The present work shows a quantitative trade-off analysis of the Simbol-X Mirror Spacecraft (MSC) passive shielding, in the phase space of the various parameters: mass budget, dimension, geometry, and composition. A simplified physical (and geometrical) model of the sky screen, implemented by means of a GEANT4 simulation, has been developed to perform a performance-driven mass optimization and evaluate the residual background level on Simbol-X focal plane.Comment: 3 pages, 6 figures, to appear in the proceedings of the second Simbol-X International Symposium "Simbol-X - Focusing on the Hard X-ray Universe", AIP Conf. Proc. Series, P. Ferrando and J. Rodriguez ed

    Micropropagation of Glandularia, native genus with ornamental potencial

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    En este trabajo se estableció un protocolo de propagación in vitro de tres especies nativas del género Glandularia: G. peruviana, G. sp. y G. laciniata. Para el establecimiento in vitro se evaluó el medio de Murashige Skoog (MS) con macro y micronutrientes diluidos a la mitad adicionado con 0,05 μM de bencilaminopurina (BAP) sola o en combinación con 0,1 μM thiadiazuron (TDZ) y un testigo sin reguladores del crecimiento. En la etapa de multiplicación se evaluó el medio de cultivo MS diluido a la ½ ó ¼ y adicionado de 20 ó 40 gr.L-1 de sacarosa. Es posible establecer y micropropagar estas especies en medios de cultivo sencillos. El medio más eficiente para el establecimiento fue aquel sin reguladores, mientras que el más adecuado para la multiplicación fue MS ½ adicionado de 20 gr.L-1 de sacarosa, en el cual la tasa de multiplicación cada 30 días fue de 6 en G. sp. y G. peruviana y 4 para G. laciniata.In this work there was established a protocol of microspropagation of three native species of the genus Glandularia, G. peruviana, G. sp. and G. laciniata. Macro and micronutrients half strength Murashige Skoog (MS) media added with BAP 0.05 μM alone or in combination with TDZ 0.1 μM were tested in the establishment stage. Half and quarter strength MS media with 20 or 40 g.L-1 of sucrose were assayed at multiplication stage. It is possible to establish and to micropropagate these species in simple culturing media. The most efficient media for establishment stage was that one without growth regulators, whereas the most suitable for the multiplication it was MS ½ with 20 g.L-1 of sucrose, where the multiplication rate every 30 days were 6 for G. sp and G. peruviana and 4 for G. laciniata.Fil: Ponce, María T.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ciencias BiológicasFil: Guiñazú, Mónica E.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ciencias BiológicasFil: Fioretti, Sonia B.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Cirrincione, Miguel A.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ciencias Biológica

    Diagnosis of centrocestus formosanus infection in zebrafish (Danio rerio) in Italy: A window to a new globalization-derived invasive microorganism

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    Centrocestus formosanus is a digenetic trematode with a complex life cycle, involving invertebrate and vertebrate hosts, humans included. In particular, it causes gill lesions and mortality in freshwater fish species, and gastrointestinal symptoms in infected humans. Here, we describe the occurrence of C. formosanus infection in zebrafish imported in Italy and propose a newly designed species-specific primer pair to ameliorate the diagnostic investigations for C. formosanus. Gill arches of 30 zebrafish were examined for the presence of encysted metacercariae under a stereomicroscope and processed through molecular analyses targeting the ribosomal internal transcribed sequence 2 (ITS2). Although C. formosanus distribution was originally restricted to Asia, it has been subsequently reported in new countries, revealing itself as an invasive species and raising important concerns for biodiversity, economy, scientific research, as well as animal and public health. Given the crucial role played by the ornamental fish industry in spreading this parasite, there is an urgent need for control measures to prevent the introduction and establishment of C. formosanus in non-endemic areas, including Europe. We also suggest developing new strategies in microbiology and epidemiology to better explore this new globalization-derived invasive species

    Assays to determine the proper season to practice agamic propagation in ornamental grasses : : Mendoza (Argentina)

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    La división de matas es una técnica de propagación difundida con gran éxito entre las Gramíneas. Cuando se trata de la producción comercial de este grupo de plantas, es importante conocer la época en que se realiza esta práctica para obtener plantas de la mejor calidad en el menor tiempo posible. Según algunos autores, la estación apropiada para dividir gramíneas está relacionada con el momento de activo crecimiento: primavera tardía para las especies estivales y otoño o primavera temprana para las invernales. En este trabajo se estudió la influencia de la época del año en la división de matas de Miscanthus sinensis "Variegatus", Miscanthus sinensis "Zebrinus", Miscanthus sinensis "Morning Light", Paspalum haumanii, Leymus arenarius, Pennisetum setaceum y Trichloris crinita en diciembre y febrero. Se evaluaron las características ornamentales y la precocidad, con fines comerciales, de las plantas obtenidas en otoño y primavera tardía. Las variables utilizadas fueron altura vegetativa, diámetro de canopia y de corona, número de cañas y porcentaje de sobrevivencia. Desde el punto de vista comercial y productivo, es conveniente realizar la división de matas en otoño para obtener precocidad sólo en M. sinensis "Variegatus" y M. sinensis "Zebrinus". En el caso de M. sinensis "Morning Light", P. setaceum, T. crinita, P. haumanii y Leymus es más adecuada la división de primavera.Division of clumps is the largest used technique of vegetative propagation spread with great success among the grasses. When it comes to commercial production of ornamental grasses, it is important to know the season that this practice is done to get plants of the best quality in the shortest possible time. According to some authors, division is usually best done when grasses are in active growth: late spring for the summer species and autumn or early spring for the winter ones. In this assay, the aim was to study the influence of the season in the division of Miscanthus sinensis "Variegatus", M. sinensis "Zebrinus", M. sinensis "Morning Light", Paspalum haumanii, Leymus arenarius, Pennisetum setaceum and Trichloris crinita in December and February, it was also evaluated the ornamental condition and precocity of plants obtained in autumn and into late spring with commercial purposes.The variables considered were: vegetative height, canopy diameter, and crown diameter, number of canes and percentage of survival. From commercial and productive point of view, it is advisable to realize the division in autumn to obtain precociousness only in M. sinensis "Variegatus" and in M. sinensis "Zebrinus". In the case of M. sinensis "Morning Light", P. setaceum, T. crinita, P. haumanii and Leymus is more appropriate spring division.Fil: Fioretti, Sonia B.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Videla, Eugenia. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Ponce, María T.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ciencias BiológicasFil: Tonda, Marta. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Carrieri, Sergio A.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción Agropecuari
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