Search results for "GREEN"
showing 10 items of 1660 documents
Impresa e responsabilità nel prisma del New Green Deal europeo
2022
Il contributo indaga l'impatto del New Green Deal europeo sul diritto dell'impresa e delle società, con particolare riguardo alla Direttiva Corporate Sustainaibility
Unravelling green regional industrial path development: Regional preconditions, asset modification and agency
2020
Abstract Regions across the world are searching for ways to fashion new green growth paths and to promote green shifts in mature industries. The article aims to explore conceptually and based on illustrative empirical examples from the literature how green restructuring unfolds in regions. We propose a framework that explicates how regional preconditions in form of pre-existing industrial structures, organisational support structures, institutional set-ups and natural assets are transformed into various types of green path development through agentic processes of asset modification.
Effect of antioxidants on the shear bond strength of composite resin to enamel following extra-coronal bleaching
2019
Background Recently patients need faster treatments, and delaying restoration is not possible following bleaching treatment. The purpose of this study was to determine the effect of antioxidants, namely 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extract on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Material and Methods Seventy premolars were randomly assigned into 7 groups of 10 each. Group 1: bleaching treatment and no antioxidants application. Group 2: composite was built-up immediately after bleaching. Group 3: bleached specimens received composite build-up delayed by 2 weeks. Group …
BIOCHARS IN SOILS: TOWARDS THE REQUIRED LEVEL OF SCIENTIFIC UNDERSTANDING
2017
The special issue on Biochar as an Option for Sustainable Resource Management Key priorities in biochar research for future guidance of sustainable policy development have been identified by expert assessment within the COST Action TD1107. The current level of scientific understanding (LOSU) regarding the consequences of biochar application to soil were explored. Five broad thematic areas of biochar research were addressed: soil biodiversity and ecotoxicology, soil organic matter and greenhouse gas (GHG) emissions, soil physical properties, nutrient cycles and crop production, and soil remediation. The highest future research priorities regarding biochar’s effects in soils were: functional …
Diffuse and focused carbon dioxide and methane emissions from the Sousaki geothermal system, Greece
2006
[1] We report first data on chemical composition of the gas emitted by the geothermal system of Sousaki, Greece. Gas manifestations display typical geothermal gas composition with CO2 as the main component and CH4 and H2S as minor species. Soil gas composition derives from the mixing of two end-members (atmospheric air and geothermal gas). Soil CO2 fluxes range from<2 to 33,400 g m−2 d−1. The estimated diffuse output of hydrothermal CO2, estimated for an area of 0.015 km2, is about 630 g s−1, while a tentative estimation of CH4 diffuse output gave a value of about 1.15 g s−1. Point sources accounted for lower flux values of ∼26 g s−1 of CO2, ∼0.1 g s−1 of CH4 and ∼0.02 g s−1 of H2S.
The crucial interactions between climate and soil
2022
Since the birth of soil science, climate has been recognized as a soil-forming factor, along with parent rock, time, topography, and organisms (from which humans were later kept distinct), often prevalent on the other factors on the very long term. But the climate is in turns affected by soils and their management. This paper describes the interrelationships between climate – and its current change – and soil, focusing on each single factor of its formation. Parent material governs, primarily through the particle size distribution, the capacity of soil to retain water and organic matter, which are two main soil-related drivers of the climate. Time is the only unmanageable soil-forming facto…
Enseñanza de las ciencias : revista de investigación y experiencias didácticas
2021
Este trabajo se plantea estudiar el papel de la Química Verde en la educación científica para contribuir, desde ese campo, a la Ciencia de la Sostenibilidad y, por tanto, a la transición hacia sociedades sostenibles. Se mostrarán unos primeros resultados de una investigación llevada a cabo sobre la atención que la enseñanza secundaria y la propia investigación en el campo de la didáctica de las ciencias están prestando a las aportaciones de la Química Verde, y la posibilidad de su incorporación en la formación de la ciudadanía y la adopción de medidas necesarias para contribuir a la construcción de un futuro sostenible. Se pretende así responder a los numerosos llamamientos para que la educ…
Le questioni della sostenibilità economica
2016
La mancanza di un approccio economico di tipo sistemico, condiviso e partecipativo ha prodotto nell’economia di vaste aree del Mezzogiorno d’Italia una frammentazione di competenze, una scarsa flessibilità e un’insostenibilità dello sviluppo spontaneo, incontrollato e senza identità. Ancor di più questa condizione – accompagnata dagli egoismi e dai personalismi dei soggetti imprenditoriali, ma troppo spesso anche da quelli istituzionali – ha pesato sullo sviluppo delle aree a forte vocazione turistica. L’orientamento strategico dello sviluppo richiede alle comunità residenti, e più in generale a tutti gli stakeholder del territorio (imprese, commercio, imprese sociali, Pubblica Amministrazi…
Sustainable soy protein microsponges for efficient removal of lead (II) from aqueous environments
2023
Protein-based materials recently emerged as good candidates for water cleaning applications, due to the large availability of the constituent material, their biocompatibility and the ease of preparation. In this work, new adsorbent biomaterials were created from Soy Protein Isolate (SPI) in aqueous solution using a simple environmentally friendly procedure. Protein microsponge-like structures were produced and characterized by means of spectroscopy and fluorescence microscopy methods. The efficiency of these structures in removing Pb2+ ions from aqueous solutions was evaluated by investigating the adsorption mechanisms. The molecular structure and, consequently, the physico-chemical propert…
Per un ripensamento dello standard in chiave prestazionale: un caso studio a Palermo
2017
Il contributo nasce dallo studio dell’esperienza di Parco Uditore, un'area verde di Palermo, diventata nel 2012 parco pubblico in seguito a una mobilitazione civica. L'apertura del parco in una circoscrizione che, parimenti alle altre a Palermo, risulta carente di aree attrezzate ha indotto un ragionamento sull'ipotesi di stabilire dei parametri prestazionali, oltre che di superficie, per gli spazi pubblici verdi. Seguendo una metodologia induttiva e comparativa, rispetto a modelli sperimentati in altri contesti, il contributo si propone di verificare se dall’osservazione del caso di Parco Uditore sia possibile estrapolare parametri prestazionali da affiancare alla dotazione minima dello st…