Search results for "LCA"
showing 10 items of 1995 documents
Margini e interstizi vegetati per una città resiliente
2021
La mancanza di vegetazione all’interno delle nostre città e, soprattutto, dei centri storici determina oggi, alla luce dei cambiamenti climatici in corso, notevoli problematiche tra le quali vanno annoverate – tra quelle più gravi – l’impossibilità di contrastare efficacemente le ondate di calore, sempre più frequenti in ambito Mediterraneo, con conseguente aumento dei consumi energetici degli edifici dovuti alla necessità di garantire il comfort indoor e l’incapacità di rallentare il deflusso delle acque meteoriche che a causa degli eventi di pioggia estremi e dell’impermeabilità dei suoli rendono sempre più inefficaci i sistemi di drenaggio urbano esistenti. L’utilizzo della vegetazione c…
2014 03. Primarias abiertas a la francesa en el PSPV. Una experiencia de éxito 9 de marzo 2014.
2015
Primarias abiertas a la francesa en el PSPV. Una experiencia de éxito. Primarias abiertas: 9 de marzo 2014. Resultado de la votación: Ximo Puig 69%. Toni Gaspar 31%. Análisis y valoraciones: unas primarias a la francesa de éxito. La prensa valenciana analiza y valora las primarias abiertas. La reacción de otros partidos ante el éxito de las primarias.
The hydrothermal system of the Domuyo volcanic complex (Argentina): A conceptual model based on new geochemical and isotopic evidences
2016
The Domuyo volcanic complex (Neuquén Province, Argentina) hosts one of the most promising geothermal systems of Patagonia, giving rise to thermal manifestations discharging hot and Cl−-rich fluids. This study reports a complete geochemical dataset of gas and water samples collected in three years (2013, 2014 and 2015) from the main fluid discharges of this area. The chemical and isotopic composition (δD-H2O and δ18O-H2O) of waters indicates that rainwater and snow melting are the primary recharge of a hydrothermal reservoir located at relative shallow depth (400–600 m) possibly connected to a second deeper (2–3 km) reservoir. Reactive magmatic gases are completely scrubbed by the hydrotherm…
Life Cycle Assessment of aluminum alloys chips recycling through single and multi-step Friction Stir Consolidation processes
2023
Manufacturing scientists have to find new processes enabling energy and resource efficient circular economy strategies. Solid state recycling processes have proved to be environmentally friendly alternatives to recycle aluminum alloys process scraps like chips. In this paper the environmental characterization of a solid state recycling process named Friction Stir Consolidation (FSC) is presented. A full Life Cycle Assessment (LCA) comparative analysis is developed: the environmental performance of new and different variants of FSC processes and remelting based routes are quantified and compared to one another. Also, different scenarios are analysed to provide guidelines for the correct impl…
Geochemical processes assessed by Rare Earth Elements fractionation at "Laguna Verde" acidic-sulphate crater lake (Azufral volcano, Colombia)
2017
Abstract The geochemical behaviour of major elements, Fe, Al, Mn, and Rare Earth Elements (REE) was investigated in the “Laguna Verde” acidic crater lake of Azufral volcano (Colombia). The cold lake water (T close to 10 °C) is sulphate-dominated, due to absorption and oxidation of H2S (pH 2.1–2.7, Eh 196–260 mV), and Na-enriched (Total Dissolved Solids 0.79 g L−1). The total amount of REE dissolved in the lake ranges from 3.3 to 9.1 ppb. The REE patterns normalized to the local rocks show a Light Rare Earth Elements (LREE) depletion quite constant in the 15 samples. Similar patterns were already found in the acidic sulphate springs of Nevado del Ruiz volcano-hydrothermal system, caused by t…
Common genetic denominators for Ca++-based skeleton in Metazoa: role of osteoclast-stimulating factor and of carbonic anhydrase in a calcareous spong…
2012
Calcium-based matrices serve predominantly as inorganic, hard skeletal systems in Metazoa from calcareous sponges [phylum Porifera; class Calcarea] to proto- and deuterostomian multicellular animals. The calcareous sponges form their skeletal elements, the spicules, from amorphous calcium carbonate (ACC). Treatment of spicules from Sycon raphanus with sodium hypochlorite (NaOCl) results in the disintegration of the ACC in those skeletal elements. Until now a distinct protein/enzyme involved in ACC metabolism could not been identified in those animals. We applied the technique of phage display combinatorial libraries to identify oligopeptides that bind to NaOCl-treated spicules: those oligop…
specific inflammatory response of Anemonia sulcata (cnidaria) after bacterial injection cause tissue rejection and enzymatic activity alteration
2015
The evolution of multicellular organisms was marked by adaptation to protect against pathogens. The mechanisms for discriminating the ''self'' from ''non-self” have evolved into a long history of cellular and molecular strategies from damage repair to the co-evolution of host-pathogen interaction. The phylum of Cnidaria is one of the first branches in the tree of animal life to provide crucial insights on the evolution of immunity. Sea anemones (Anthozoa, Cnidaria) are benthic sessile species able to maintain the integrity of the tissues and allorecognition in colonial forms and to differentiate between symbionts and pathogenic intruders. We investigated the inflammatory response in sea ane…