Search results for "Recovery"
showing 10 items of 876 documents
Assessment of Arundo donax Fibers for Oil Spill Recovery Applications
2019
In the last years, natural fibers are increasingly investigated as an oil recovery system in order to overcome the oil spillage phenomena, thus preserving environment and aquatic life. In particular, lignocellulose-based fibers have recently been employed with promising results. In such a context, the aim of this paper is to assess the oil sorption capability of natural fibers extracted from the stem of the giant reed Arundo donax L., a perennial rhizomatous grass belonging to the Poaceae family that grows naturally all around the world thanks to its ability to tolerate different climatic conditions. Sorption tests in several pollutants and water as a reference were carried out. The fibers …
An Environmental Analysis of the Effect of Energy Saving, Production and Recovery Measures on Water Supply Systems under Scarcity Conditions
2015
Water is one of the primary resources provided for maintaining quality of life and social status in urban areas. As potable water is considered to be a primary need, water service has usually been managed without examining the economic and environmental sustainability of supply processes. Currently, due to increases in energy costs and the growth of environment preservation policies, reducing water leakage, energy consumption and greenhouse gas (GHG) production have become primary objectives in reducing the environmental footprint of water service. The present paper suggests the implementation of some performance indicators that show the interdependence of water loss, energy consumption and…
Hybrid Propulsion Efficiency Increment through Exhaust Energy Recovery—Part 1: Radial Turbine Modelling and Design
2023
The efficiency of Hybrid Electric Vehicles (HEVs) may be substantially increased if the energy of the exhaust gases, which do not complete the expansion inside the cylinder of the internal combustion engine, is efficiently recovered by means of a properly designed turbogenerator and employed for vehicle propulsion; previous studies, carried out by the same authors of this work, showed a potential hybrid vehicle fuel efficiency increment up to 15% by employing a 20 kW turbine on a 100 HP rated power thermal unit. The innovative thermal unit here proposed is composed of a supercharged engine endowed with a properly designed turbogenerator, which comprises two fundamental elements: an exhaust …
Alternatives to the traditional waste management: Food recovery for human non-profit organizations
2015
Food supply chains are affected by losses of products which become poorly attractive for the consumers as they get close to their expiration date, therefore remaining unsold on the shelves. Such situation is ethically depreciable considering that many undernourished people rely on non-profit organizations for their survival. Despite of this situation, food recovery through the supply chain is still scarcely practiced, and the potential benefits achievable are frequently ignored. The paper presents a mathematical model for the coordination of the supply chain operating a food recovery policy. The model determines the optimal time for withdrawing the products from the shelves and the quantity…
Coping variables as predictors of perioperative emotional states and adjustment
1996
Abstract Surgery, regardless of its kind and severity, can be regarded as a major stress situation for any patient. High preoperative emotional arousal may negatively influence adaptation during surgery and, consequently, rate of postoperative recovery. In a series of previous studies, our research group analyzed the influence of dispositional and actual coping on subjective and objective stress indicators before, during, and after surgery. The present study investigates the influence of the dispositional coping variables vigilance and cognitive avoidance on actual surgery-related coping, state anxiety, and indicators of intra- and postoperative adjustment. The sample consisted of 42 male a…
Fighting the COVID-19 Crisis: Debt Monétisation and EU Recovery Bonds
2020
AbstractThis paper highlights some peculiar characteristics of the economic crisis induced by the spread of COVID-19. It suggests two intertwined policy measures in order to tackle the emergency phase of the crisis and to support the economy in the subsequent recovery phase. The proposed short-term policy measures offer policy responses in the event of a second wave of coronavirus infections in the coming months. In the aftermath of the emergency phase, the current proposal puts forward the implementation of a massive EU-wide recovery plan addressing the long-lasting technological and environmental challenges of these years, which will be financed by European institutions through the issuan…
Patterns of Teachers’ Occupational Well-Being During the COVID-19 Pandemic: Relations to Experiences of Exhaustion, Recovery, and Interactional Style…
2021
This study examined profiles of teachers’ occupational well-being during the COVID-19 pandemic. The data were collected from 279 Finnish primary school teachers during the spring of 2020. Four groups of teachers were identified by using Latent Profile Analysis: 1) teachers with mediocre stress and work engagement (34.4%);2) teachers with mediocre stress and lowest work engagement (11.5%);3) teachers with highest stress and work engagement (26.5%);and 4) teachers with lowest stress and highest work engagement (27.6%). The findings indicated that teachers’ occupational well-being was individually constructed, and there was a diversity with ways how negative and positive aspects of occupationa…
DISTRIBUTISM - WAY FOR SUSTAINABLE ECONOMIC RECOVERY
2013
As history of the last centuries has shown, the capitalism and the communism are generating economic crisis, in connection with a deeper crisis, i.e. the spiritual crisis, driven by the tendency of man’s massification,, by which his spiritual qualities are strongly tainted over time. Distributism, promoting widespread ownership of productive ownership, is the only economic frame adequate to the anthropology of the person, namely of a true man.
Pricing for Reclaimed Water in Valencia, Spain: Externalities and Cost Recovery
2015
The cost of reclaimed water and the tariffs paid by water users illustrate that the principle of cost recovery is not met in the majority of water reuse projects. However, such projects may also generate positive externalities, contributing to improved welfare of the entire society. This chapter describes the case of the Valencia region of Spain, referring to agreements among water stakeholders. It also includes a proposal of pricing for reclaimed water to be implemented in this area as a pilot case in order to develop a framework for costs and financial, institutional, and social arrangements for water reuse projects. A two-part tariff with a combination of a decreasing and increasing rate…
Autonomie e controlli della Corte dei conti nel quadro dei principi costituzionali e dei vincoli sovranazionali in materia economico-finanziaria
2022
Una riflessione dei controlli sulle autonomie territoriali intestati alla Corte dei conti non può prescindere dal loro inquadramento costituzionale. L’A. prospetta una ricostruzione del controllo come espressione di una funzione neutra e imparziale che deve riposare su precisi parametri costituzionali che ne legittimano l’adozione e di cui va resa una stretta interpretazione: il controllo sulle Autonomie territoriali deve così essere necessariamente una attività tale da avvicinarla a quella giurisdizionale piuttosto che amministrativa. È in tale chiave che deve essere inteso il rapporto fra ausiliarietà di cui all’art. 100 Cost. e controlli sui bilanci ed i rendiconti. L’evoluzione del quad…