177,342 research outputs found
Temperate-type (foramol facies) carbonate platforms versus tropical-type (chlorozoan facies) carbonate platforms: tri-dimensional arrangement of lithofacies, benthic associations and evolution of the related depositional systems
No full textLow energy vs. high energy depositional settings related sedimentary bodies in early Senonian rudist bearing carbonate shelves (central-southern Italy)
No full textCarannante Gabriele, Laviano A., Ruberti D., Simone Lucia, Sirna G., Sirna M., Tropeano M. Low energy vs. high energy depositional settings and related sedimentary bodies in early Senenian rudist bearing carbonate shelves (central-southern Italy). In: Géologie Méditerranéenne. Tome 28, numéro 1-2, 2001. Anatomy of Carbonate Bodies / Anatomie des corps carbonates. International Meeting / Colloque international. Marseille, 9-12 mai 2001, France, sous la direction de Marc Floquet, Jérôme Hennuy et Jean-Pierre Masse. pp. 37-40
Pathways to Greener Primary Lithium Extraction for a Really Sustainable Energy Transition: Environmental Challenges and Pioneering Innovations
No full textThe rapid increase in lithium demand has recently drawn attention to the environmental impacts of conventional mining processes. Pyrometallurgical extraction from hard rock is associated with high energy consumption, greenhouse gas (GHG) emissions, and land degradation. Extraction from brines involves the depletion of water resources and risks to local ecosystems. In response to these environmental challenges, this study explores innovative pathways for more sustainable primary lithium extraction for a truly green energy transition across the entire supply chain. This paper provides a comprehensive examination of novel technologies designed to mitigate these impacts, with particular emphasis on direct lithium extraction (DLE) technologies, which offer promising solutions for water savings, CO2e emissions reduction, and improved lithium recovery. A comprehensive review of the scientific literature, along with an analysis of data and information from various pilot projects and demonstration plants, have been conducted. The main conclusion is that, despite considerable efforts by mining companies, two primary obstacles remain to the implementation of novel technology: scalability and operational costs. To address these challenges, it is essential to sustain consistent investments in R&D (Research and Development) initiatives and continue testing the implementation of the most sustainable experimental practices on an industrial scale
Facies changes on shelves and related slopes in the Senonian Rudist bearing, foramol carbonate deposits
No full textCarannante Gabriele, Graziano R., Ruberti D., Simone Lucia. Facies changes on shelves and related slopes in the Senonian Rudist bearing, foramol carbonate deposits. In: Géologie Méditerranéenne. Tome 21, numéro 3-4, 1994. Perimediterranean carbonate platforms. First International Meeting. Marseille – France (5-8 septembre 1994) sous la direction de Jean-Pierre Masse. pp. 21-25
Semi-strong inefficiency in the fixed odds betting market: Underestimating the positive impact of head coach replacement in the main European soccer leagues
No full textIn this paper we analyse the efficiency of the sports betting market, seeking to ascertain whether the market is efficient in the case of fixed odds provided by bookmakers in the four major European soccer leagues under the semi-strong efficiency hypothesis. By examining the trends of odds in the event of a major change in expectations about team results, i.e. when the head coach of a team is replaced, we attempt to verify the argument that a profitable strategy for the bettor is likely to be possible. In this case, the market under consideration would be inefficient. Analysing the average effect of head coach replacement, we find a positive impact on team performance. Based on this information, we build a betting strategy to find out whether the bookmakers’ odds absorb this change in expectations about the winning probability of involved teams. Comparing our strategy result with a distribution generated in a Monte Carlo experiment, we conclude that the betting market is inefficient in its semi-strong form
The chip manufacturing industry: Environmental impacts and eco-efficiency analysis
No full textSemiconductor manufacturing has followed the fate of a large part of industrial production: many companies, around the world, have maintained higher functions (design and engineering) and outsourced other production stages to third-party manufacturers, located mostly in Asia. Some chip companies have thus become "fabless" firms, commissioning the "fabrication" of their product to wafer "foundries" or "fabs". For the first time, in this paper, by calculating and subsequently analyzing various key environmental performance indicators (KEPIs) from the data of the fabs Corporate Social Responsibility (CSR) reports, the environmental impacts and the eco-efficiency of the world's leading semiconductor foundries are analyzed and assessed. The aim is to highlight the relations between company size, technological capacity and environmental impact. A preliminary homogenization was necessary to process the company original data and indicators, often related to different units of production, and to obtain raw data in absolute value. Subsequently, adopting a single common manufacturing index (MI), it was possible to obtain and use new comparable performance indicators and KEPIs. The consequent comparative assessment allowed to give a reliable overall picture of the current resource consumption and pollution of this highly strategic sector, highlighting its next heavy environmental challenges. The result, in fact, is that, differently to what happens in many other sectors, in the semiconductor industry, larger company size (higher revenue), higher value added per wafer produced (higher revenue/MI), and higher technological capacity (higher R&D expenses and smaller technology node) are not always related to lower quantities (per unit of production) of water, energy, waste, wastewater and GHG emissions. It is hoped that, for the future, foundry firms, especially those with the most advanced technologies, will invest much more to optimize their resource use and to further reduce GHGs emissions and waste generation
Cuneospirella samnitica, gen. n., n. sp. (Foraminiferida) from the Santonian of the Matese Mountains (Molise, Central Italy)
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Temperate-type (foramol facies) carbonate platforms versus tropical-type (chlorozoan facies) carbonate platforms: tri-dimensional arrangement of lithofacies, benthic associations and evolution of the related depositional systems.
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