170,204 research outputs found
Un classicista barocco e il suo pubblico: Ottavio Ferrari (1607-1682) tra umanesimo e antiquaria
No full textAn example of a building service LCA for a new hospital’s operating room
No full textThe paper deals with the environmental Life Cycle Assessment (LCA) of HVAC plants operating in an emergency ward of a major hospital building in North of Italy. The analysis was performed in order to evaluate the environmental impact of individual components such as heat generators, heat pumps, air handling units and distribution systems and their effects on the overall environmental balance of the HVAC system.
When a component is utilized in a circuit for functional wards, LCA takes only into account of the fractional environmental
damage to that particular ward. The assessment was made using the Dutch code SimaPro 5.0® in accordance to
EcoIndicator 99 thus enabling quantification of the environmental damage due to different impacts. In this analysis the software uses a database built from past cases
A methodology for life cycle assessment of building services
No full textThe study described in this paper focussed on the requirements of Life cycle Assessment (LCA) of HVAC system. The
environmental behaviour of an HVAC system evaluated by LCA considers all the process necessary for components
production, use and disposal. A database for Italian conditions was created for examining the environmental impacts of
material, transport, land use and energy consumption of HVAC’s processing and management. The database is capable LCA
of building services. The application of the methodology is proposed for there different heating systems i.e traditional, solar
and heat pump systems for the energy requirements of residential buildings in Rome. The LCA was undertaken by means of
Dutch Code SimaPro 5.0® in accordance to EcoIndicator 99. The LCA of the studies showed that the renewable energy
sources (solar collectors) or high performance (heat pumps) cause low environmental damage for energy consumption but
high impacts on global environmental balance of the plant production resulting from the components
Design and development of the target-ion source system for the SPES project
No full textThe most important project of LNL (National Laboratory of Legnaro), one of the four Laboratory of INFN (National Institute for Nuclear Physics), is the SPES project, now at the construction phase. The aim of this new facility is to produce Radioactive Ion Beams in the neutron rich side of the so-called “valley of stability”. This is a very challenging project since it requires a lot of knowledge and studies from physical, chemical, engineering points of view. The core of the facility is a uranium carbide target mantained at high temperature (above 2000°C) which produces by fission radioactive atoms by means of an energetic and powerful proton beam.
In this thesis, both the target and some of the most delicate devices which have to be installed inside the SPES bunker where the nuclear reactions occur are presented. In particular, the design phase of the target and the tests performed at iThemba LABS in South Africa will be presented, as the design of all the diagnostics that have to be installed to safely manage and control the production of the radioactive beams. Finally, the design phases and tests of the Wien Filter used as the preliminary mass separator to decrease the unwanted radioactivity along the beam line will be showed
Educational itineraries to promote Gender Equality in STEM
No full textTo promote Action-1 in the Italian PLS Project on Gender Equality
in STEM, interdisciplinary teaching activities for High School students were developed in the 2019–2021 period. These activities were conceived in such a way that the laboratory practice could be linked not only to technical or scientific contents but also to historical or sociological topics according to the Inquiry methodology. During laboratory sessions, besides carrying out ordinary experimental activities on carefully selected topics, students had the chance to learn about the biography of some female scientists whose research activities were related to these topics. Part of the activities was designed as an escape room process: students were guided through the maze by the relation existing between a female scientist and the relevant physics topic
Allan Variance Analysis of Measurement Data Series for Instrument Verification
No full textThe paper is concerned with the analysis of measurand and instrument stability during the calibration verification process, with a view on ensuring that comparison is carried out under suitable assumptions. It will be shown how analysis of the Allan variance allows stability characterization of the measurement circuit and yields information about measurement noise, so that a correct procedure for the verification of the calibration status can be defined. This is of particular significance in the context of an industrial laboratory, where one of the main purposes of the analysis would be to identify improvements to the measurement system, that could allow to perform calibration verification within the limits of available equipment
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