Search results for "Pact"
showing 10 items of 2355 documents
Life Cycle Assessment of Flow-Redox Cells: A Case Study
2022
European Union identified the battery value chain as strategic for achieving a sustainable and decarbonized economy. Focusing on the environmental sustainability of batteries, this paper presents an application of the Life Cycle Assessment methodology to three flow-redox cells characterized by electrodes made by different materials. The results are referred to one kWh of energy supplied by the cell during its useful life and are calculated following a “from cradle to grave” approach. Negligible differences (lower than 1.5%) are observed in the energy and environmental impacts of the three types of cells, mainly due to the type of electrode and the use phase. A dominance analysis shows that …
Presentazione del progetto, analisi dei risultati e valutazione dei fattori critici di successo.
2010
Environmental assessment of a waste-to-energy practice: The pyrolysis of agro-industrial biomass residues
2021
Abstract The bio-wastes pyrolysis is a waste to energy strategy that converts bio-wastes into valuable products (bio-char, bio-oil) with wide use in the agri-food sector. However, limited efforts are paid to the investigation of its environmental sustainability: in this context, the study contributes the need towards the assessment of a wide range of environmental impacts for the pyrolysis process of different types of bio-wastes under different operating conditions. The study estimates the potential environmental impacts related to bio-char production from the pyrolysis of several different agro-industrial residues and different temperatures and identifies the process “hot spots”. The anal…
Energy and environmental life-cycle impacts of solar-assisted systems: The application of the tool “ELISA”
2020
Abstract Solar heating and cooling (SHC) systems can be relevant in the achievement of energy and climate European goals. The benefits of these technologies should be evaluated taking into account their life-cycle energy and environmental impacts, calculated by applying the Life Cycle Assessment (LCA). The development of a complete LCA can be difficult and time-consuming particularly for non-experts in LCA, discouraging them in developing the life-cycle assessments. To overcome this issue, the paper presents “ELISA - Environmental Lifecycle Impacts of Solar Air-conditioning systems”, a user-friendly simplified tool for estimating the life-cycle energy and environmental benefits/impacts of s…
The minimal model of Hahn for the Calvin cycle.
2018
There are many models of the Calvin cycle of photosynthesis in the literature. When investigating the dynamics of these models one strategy is to look at the simplest possible models in order to get the most detailed insights. We investigate a minimal model of the Calvin cycle introduced by Hahn while he was pursuing this strategy. In a variant of the model not including photorespiration it is shown that there exists exactly one positive steady state and that this steady state is unstable. For generic initial data either all concentrations tend to infinity at lates times or all concentrations tend to zero at late times. In a variant including photorespiration it is shown that for suitable v…
Putting resources into practice: a nexus analysis of knowledge mobilisation activities in language research and multilingual communities
2014
Recent demand within the academy for language research that bridges different stakeholders renders the social relevance of research a factor in the academic competition for research funds [Curry, M. J., & Lillis, T. (2013). Introduction to the thematic issue: Participating in academic publishing – consequences of linguistic policies and practices. Language Policy, 12, 209–213]. This calls for new means and innovations for designing and carrying out knowledge mobilisation activities, with consequences concerning where, how and with whom this type of undertaking can or should be done. In this paper we, a team of (multilingual) researchers working within the fields of multilingualism, minority…
Spanish Scientists' Opinion about Science and Researcher Behavior.
2021
Encuestamos a 348 investigadores de Psicología y Educación en España, sobre temas como su percepción de una crisis en la ciencia, su confianza en la calidad de los resultados publicados y el uso de prácticas de investigación cuestionables (QRP). También se recogieron sus percepciones respecto a la presión por publicar y la competencia académica. Los resultados indican que una gran parte de la muestra de académicos españoles piensa que existe una crisis en la Ciencia, principalmente por falta de inversión económica, y duda de la calidad de los hallazgos publicados. También sienten una fuerte presión para publicar en revistas de alto factor de impacto y un clima laboral altamente competitivo.…
Energy and environmental assessment of a traction lithium-ion battery pack for plug-in hybrid electric vehicles
2019
Abstract Traction batteries are a key factor in the environmental sustainability of electric mobility and, therefore, it is necessary to evaluate their environmental performance to allow a comprehensive sustainability assessment of electric mobility. This article presents an environmental assessment of a lithium-ion traction battery for plug-in hybrid electric vehicles, characterized by a composite cathode material of lithium manganese oxide (LiMn2O4) and lithium nickel manganese cobalt oxide Li(NixCoyMn1-x-y)O2. Composite cathode material is an emerging technology that promises to combine the merits of several active materials into a hybrid electrode to optimize performance and reduce cost…
Stratégies d'influences et politiques de maîtrise de la croissance locale
2010
Over the last ten years, real estate prices have risen considerably and accordingly to most observers, this can at least partly be attributed to an insufficient supply, due to local growth control measures. This thesis tries to understand what motivates local authorities implementing such policies. Local politicians are considered as opportunistic and their decision is modelled as the result of a political struggle between different land-related interests. This game for influence mainly opposes the owners of developed and undeveloped land, who find allies amongst local business interests that might form growth or ideas machines. Our first model describes this struggle under different hypoth…
Inversion formulae for the integral transform on a locally compact zero-dimensional group
2009
Abstract Generalized inversion formulae for multiplicative integral transform with a kernel defined by characters of a locally compact zero-dimensional abelian group are obtained using a Kurzweil-Henstock type integral.