337 research outputs found

    Entropy gap and time asymmetry II

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    In this letter the paper [R. Aquilano, M. Castagnino, Mod. Phys. Lett A,11, 755 (1996)] is improved by considering that the main source of entropy production are the stars photospheres

    Gravity and Telomeres

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    Telomere shortening is a well-known process that is proposed to influence the pace of aging in every living being. On the other hand, telomere lengthening seems to be restricted to pluripotent cells and adult stem cell population, and it is mainly mediated by the enzyme telomerase. However, how is telomerase activation regulated in these compartments is largely unknown. Telomerase is also aberrantly upregulated in the vast majority of cancer cell where it allows for indefinite cell division. In previous papers, it has been put forth that time asymmetry is important to understand the cellular world, especially stem cells and cancer. This process could also be the cause of the telomerase activation and the corresponding telomere lengthening, but this stress mechanism described in the aforementioned articles could be extended to changes produced by the effects of gravity and the lack of gravity (weightlessness). This paper intends to expand on those previous papers.Fil: Aquilano, Roberto Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentin

    Estudios patológicos y propuestas de recuperación de obras públicas de la provincia de Buenos Aires, Argentina

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    La proximidad del Bicentenario contribuye a movilizar la conciencia histórica de la Nación y de sus estados provinciales. En vísperas de este trascendental acontecimiento, las miradas sobre nuestro pasado adquieren renovado interés y potencian la profunda resignificación que asume un momento singular en la historia de los argentinos, con proyección presente y futura. En función de ello el Ministerio de Infraestructura ha desarrollado un programa de intervención en edificios patrimoniales que contribuya a acrecentar la valoración de la obra pública provincial, revitalizando su importancia como motor dinámico de las actividades sociales, culturales y productivas bonaerenses y la riqueza identitaria de su enorme territorio.Tópico 6: Patrimonio Urbano de los siglos XVIII al XX. Técnicas de Limpieza y de Conservación

    Addemdum to: ''The Mathematical Structure of Quantum Superspace as a Consequence of Time Asymmetry''

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    In this paper we improve the results of sec. VI of paper [M. Castagnino, Phys. Rev. D 57, 750 (1998)] by considering that the main source of entropy production are the photospheres of the stars

    Improving domiciliary robotic services by integrating the ASTRO Robot in an AmI Infrastructure

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    This work describes the ECHORD Experiment ASTROMOBILE, a project aimed to design, develop and test a system for favourable independent living, improved quality of life and efficiency of care for senior citizens in domestic environments. The system, composed of a mobile robotic platform (called ASTRO) and an Ambient Intelligent Infrastructure that actively cooperated between them and with the end-user, was designed and implemented with a user-centred design approach, involving different stakeholders. The system was designed to deliver services to users, like drug delivery, stand support, reminding, info-entertainment. The design took advantages of the integration of robotic platforms with smart environments, to provide to users higher quality and localization based services. Senior end-users were involved in the experimentation of the system in the DomoCasa Living Lab and feedbacks were gathered for the technology assessment. Particularly, this paper demonstrates the general feasibility of the ASTROMOBILE system and thanks to users feedbacks its acceptability and usability
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