Search results for "Valor"

Mechanical recycling of polylactide, upgrading trends and combination of valorization techniques

2016

[EN] The upcoming introduction of polylactides in the fractions of polymer waste encourages technologists to ascertain its valorization at the best quality conditions. Mechanical recycling of PLA represents one of the most cost-effective methodologies, but the recycled materials are usually directed to downgraded applications, due to the inherent thermomechanical degradation affecting its mechanical, thermal and rheological performance. In this review, the current state of mechanical recycling of PLA is reported, with special emphasis on a multi-scale comparison among different studies. Additionally, the applications of physical and chemical upgrading strategies, as well as the chances to b…

Polylactide-based self-reinforced composites biodegradation: Individual and combined influence of temperature, water and compost

2018

[EN] Self-reinforced polymer composites (SRCs) are proposed as a suitable alternative for composite development, based in the combination of a polymeric matrix and a polymeric fibre made of the same polymer. SRCs based in polylactide (PLA) could be fully biodegradable and their valorisation routes could presumably be assimilated to those for neat PEA. In this sense, the aim of this study was to develop new self-reinforced PLA-based composites and ascertain their biodegradability. For this purpose, PLA-based SRCs were obtained through a thermo-compression procedure and their biodegradability corroborated under standard conditions (ISO 20200). Moreover, a deep study of the effect of the diffe…

Acceptance and validity of the methods used to implement a competency based medical education programme in an Intensive Care Department of a teaching…

2021

Abstract Objectives 1. To determine the satisfaction of tutors and residents with a specific methodology used to implement CoBaTrICE. 2. To determine the reliability and validity of the global rating scales designed ad hoc to assess the performance of the residents for training purposes. Design Prospective cohort study. Participants All the residents and tutors of the ICU Department of the Hospital Universitario y Politecnico la Fe de Valencia. Intervention CoBaTrICE implementation started in March 2016, it was based on: (1) Training the tutors in feedback techniques; (2) Performing multiple objective and structured work based assessments to achieve the competences of the program; and (3) T…

Un enfoque alternativo para la medicion del riesgo de interes en el ámbito de la renta variable

2002

Roman.Ferrer@uv.es El presente trabajo se plantea como objetivo primordial la derivación de una fórmula teórica de validez general para la duración de las acciones que supere las principales limitaciones de las tradicionales medidas de la duración obtenidas en el ámbito del Modelo del Descuento de Dividendos (DDM) en su versión simplificada de crecimiento constante. Con tal fin, se presta una atención preferente a las posibles interrelaciones existentes entre la tasa de crecimiento de los dividendos de las acciones y los tipos de interés nominales. En esencia, la medida de la duración generada con este enfoque alternativo se caracteriza básicamente por la incorporación de un factor de ajust…

L'evoluzione del mercato fondiario in Sicilia

2009

Evaluation of the Purity of Magnesium Hydroxide Recovered from Saltwork Bitterns

2022

Magnesium has been listed among the 30 critical raw materials by the European Union. In recent years, many green and sustainable alternative Mg2+ sources have been sought to satisfy the EU’s demand and to avoid mineral ore consumption. In this context, saltwork bitterns, the by-products of solar sea salt production, have attracted much attention thanks to their high Mg2+ concentrations (up to 80 g/L) and low Ca2+ and bicarbonate contents (<0.5 g/L). Although investigations on Mg2+ extraction from bitterns in the form of Mg(OH)2(s) have already been performed, product purity has never been properly addressed. Mg(OH)2(s) is a chemical compound of great interest and extensive utility in num…

Evasion of Tax on Interest Income in a Two-Country Model

2001

t We consider a model where agents can invest money at home and abroad. Their total income comprises interest income from these investments and labor income. Tax on interest income can be evaded — at the risk of being detected and fined. We analyze the optimal portfolio and tax evading decisions of agents with different incomes. In a second step, we scrutinize the optimal government policy. Using different instruments government tries to maximize total tax receipts and to prevent flight of capital as far as possible.

Penalties in the Theory of Equilibrium Tax Evasion: Solving King John’s Problem

2010

The authors characterize equilibria of an income reporting game with bounded returns and no commitment where detected tax evaders are charged the maximally feasible amount. Introducing partial commitment to punishment relief eliminates multiplicity of equilibria. The authors identify a unique limit equilibrium where the poorest citizens evade, intermediate citizens are honest, and the richest citizens are indifferent between evading and truth telling. For small tax rates and auditing cost, committing to a discretionary punishment relief scheme increases expected tax revenue.

Modelli concettuali e strumenti operativi per la valutazione e il miglioramento della «performance» nell’erogazione dei servizi pubblici in una prosp…

2014

La qualità dei servizi è stata riconosciuta come un rilevante aspetto caratterizzante la performance dell’azienda pubblica, analogamente alla capacità di operare secondo criteri di efficienza e nel rispetto dei vincoli di bilancio. Sebbene sia possibile riscontrare alcuni casi di customer satisfaction nelle amministrazioni pubbliche italiane, a tutt’oggi il tema presenta significative criticità, specialmente in ordine agli aspetti metodologici e agli strumenti operativi che consentano di integrare tali valutazioni nel sistema di programmazione e controllo e nel più ampio sistema di controllo organizzativo delle aziende che erogano tali servizi. Il presente lavoro adotta una diversa prospett…

Bivalve mollusks shells valorisation and recycling: market potentiality and novel building products

2023

Construction is a fundamental driver of the world economy, recognized as a sector that generates a great contribution to the social and economic development. At the same time, it shows an enormous environmental impact through an unstoppable consumption of non-renewable resources, a high energy consumption, and an associated atmospheric emission of pollutant. Consequently, the research and development of novel and green production processes and sustainable building materials is of paramount importance. The sustainability of materials and production processes could be improved by enhancing and reusing wastes from various industrial sectors. In this paper, the fishery sector will be analysed, …