6,754 research outputs found

    Dossier sur l'éthique animale. Mot de présentation

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    Remote landslide mapping using a laser rangefinder binocular and GPS

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    Abstract. We tested a high-quality laser rangefinder binocular coupled with a GPS receiver connected to a Tablet PC running dedicated software to help recognize and map in the field recent rainfall-induced landslides. The system was tested in the period between March and April 2010, in the Monte Castello di Vibio area, Umbria, Central Italy. To test the equipment, we measured thirteen slope failures that were mapped previously during a visual reconnaissance field campaign conducted in February and March 2010. For reference, four slope failures were also mapped by walking the GPS receiver along the landslide perimeter. Comparison of the different mappings revealed that the geographical information obtained remotely for each landslide by the rangefinder binocular and GPS was comparable to the information obtained by walking the GPS around the landslide perimeter, and was superior to the information obtained through the visual reconnaissance mapping. Although our tests were not exhaustive, we maintain that the system is effective to map recent rainfall induced landslides in the field, and we foresee the possibility of using the same (or similar) system to map landslides, and other geomorphological features, in other areas

    Estudio comparativo de aceros al manganeso con y sin nitrógeno

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    Los aceros al manganeso (hadfield) poseen la característica de endurecer por deformación una capa superficial, quedando el centro con una estructura austenítica (es decir dúctil) con lo cual aumenta la vida útil, si se la compara con aleaciones duras del tipo de fundición blanca o aceros al carbono templados. Estos aceros son utilizados en la industria minera y de molienda.Área: Ingeniería, Arquitectura y Tecnologí

    Study of the beam-cavity interaction in the PS 10 MHz RF system

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    The eleven main accelerating cavities of the Proton Synchrotron (PS) at CERN consist of two ferrite-loaded coaxial lambda/4 resonators each. Both resonators oscillate in phase, as their gaps are electrically connected by short bars. They are in addition magnetically coupled via the bias loop used for cavity tuning. The cavities are equipped with a wide-band feedback system, limiting the beam loading, and a further reduction of the beam induced voltage is achieved by relays which short-circuit each half-resonator gap when the cavity is not in use. Asymmetries of the beam induced voltage observed in the two half-cavities indicate that the coupling between the two resonators is not as tight as expected. The total cavity impedance coupling to the beam may be affected differently by the contributions of both resonators. A dedicated measurement campaign with high-intensity proton beam and numerical simulation have been performed to investigate the beam-cavity interaction. This paper reports the result of the study and the work aiming at the development of a model of the system, including the wide-band feedback, which reproduces this interaction

    Archivi aperti e sapere diffuso: l'esperienza dell'Università di Trieste

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    Applying the electroforming process to bio-inspired architecture: The case of Castelbuono Estate Winery

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    Abstract Inaugurated in June 2012, the Carapace at Castelbuono Estate Winery in Italy is a highly interesting example of biomorphic architecture. The structure, an artistic creation of world-renowned sculptor Arnaldo Pomodoro, is reminiscent of a tortoise shell that conveys a sense of protection: the Carapace structure guards wine barriques in the same way that the tortoise carapace protects the animal. Zoomorphic aspects are further exhibited by symbols on the roof, which remind observers of cuttlefish bone, a recurring element in the artistic production of Maestro Pomodoro. The roof was constructed by assembly of single copper plates with a rough surface in accordance with the design of the artist. Therefore, determining the appropriate production process was crucial. Electroforming was selected as the method to achieve a challenging architectural goal

    MarsLux: HI-Resolution Illumination Maps Generator for Mars

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    Illumination simulation codes for the Moon's surface have been thoroughly developed during the last years. Despite works done for the Moon, no studies have investigated the relation between sunlight illumination and the Martian surface applying those codes done for the Moon to Mars. The objective of this work is to describe the development of a surface illumination simulation code, called MarsLux, which allows users to make a detailed investigation of the illumination conditions on Mars, based on its topography and the relative position of the Sun. Our code can derive accurate illumination maps, form topographic data, showing areas that are fully illuminated, areas in total shadow, and areas with partial shade, in short computational times. Although the code does not take into account any atmospheric effect, the results proved to be of high accuracy. The maps generated are useful for geomorphological studies, to study gullies, thermal weathering, or mass wasting processes as well as for producing energy budget maps for future exploration missions.Fil: Spagnuolo, Mauro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Carballo, Federico Daniel. Servicio Geologico Minero Argentino; ArgentinaFil: Marco Figuera, R.. Jacobs University Bremen; AlemaniaFil: Rossi, A. P.. Jacobs University Bremen; Alemani

    Experimental Detection of Quantum Channels

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    We demonstrate experimentally the possibility of efficiently detecting properties of quantum channels and quantum gates. The optimal detection scheme is first achieved for non entanglement breaking channels of the depolarizing form and is based on the generation and detection of polarized entangled photons. We then demonstrate channel detection for non separable maps by considering the CNOT gate and employing two-photon hyperentangled states.Comment: 8 pages, 9 figure

    Secondary metabolites with ecologic and medicinal implications in Anthemis cretica subsp. petraea from Majella National Park

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    Anthemis cretica subsp. petraea (Ten.) Greuter is a plant belonging to the Asteraceae family and endemic of central Italy. In this paper, the first analysisof the ethanolic fraction of samples collected in the Majella National Park is reported. Seven compounds were isolated and identified namely parthenolide (1), 9α-acetoxyparthenolide (2), tamarixetin (3), 7-hydroxycoumarin (4), 4'-hydroxyacetophenone (5), leucanthemitol (conduritol F) (6),and proto-quercitol (7). Isolation of the compounds was achieved by means ofcolumn chromatography (CC), while their identification was achieved through spectroscopic and spectrometric techniques. The presence of these compounds is of great relevance. Compounds 1 and 2 are chemosystematic markers of the family, thus confirming the correct botanical classification of the species. Conversely, compounds 3, 5,and 7 were identified for the first time in the species and, instead, confirm the tendency of endemic entities to develop characteristic metabolite patterns in respect to cosmopolite species. Moreover, the presence of compounds 6 and 7 has ecologic implications and may be linked to this taxon’s adaption to dry environments. The production of these osmolytes may, in fact, represent the reason why this species is able to survive in extreme conditions of aridity. Lastly, from a medicinal standpoint, the isolated compounds are endowed with interesting biological activities and may justify, on a molecular base, the widespread traditional uses of the Anthemis species, as well as a basis for the use ofthe subspecies petraea

    THE CHRONOBIOLOGICAL HYPOTHESIS AND PSYCHOSOCIAL AND CULTURAL GENOMIC THERAPIES: FROM THE EXAMPLE OF PARKINSON’S DISEASE AND NEURODEGENERATIVE PROCESS

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    Recent research on Parkinson’s Disease (PD) revealed some common etiopathogenic mechanisms underlying a large range of chronic diseases, and more specifically the deregulation of chronobiological rhythms that may start in the very beginning of such pathological development. Contrary to the bottom-up tradition, the post-genomic biology provides now a much favorable zeitgeist to integrate holistic interventions in both biomedical research and mainstream medical practice. Such integrative efforts may not only improve our understanding of system-level dynamics about health and disease, but also opens larger possibilities for new clinical options that bring positive pathological evolutions while globally increasing quality of life of patients, caregivers, and their families. To facilitate the transition, we renew the invitation to join our international open source research project in widely testing the Creative Psychosocial Genomic Healing Experience (CPGHE), an evidence-based construction of a holistic and naturalist intervention with its standardized version specially designed to offer easy adaption for scientific investigation towards an evidence-based integration of holistic intervention possibilities
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