Search results for " Capa"
showing 10 items of 1248 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 …
Life-Cycle Land-Use Requirement for PV in Vietnam
2021
Over the last 15 years, photovoltaics (PV) in Vietnam has experienced development. The increased installed capacity of PV requires more land for installation sites as well as for manufacturing the plants’ component and waste treatment during the plants’ decommissioning. As a developing country, in which more than 80% of the population’s livelihood depends on agriculture, there are concerns about the competition of land for agriculture and solar development. This paper estimates the life-cycle land-use requirement for PV development in Vietnam, to provide the scientific-based evidence for policy makers on the quantity of land required, so that the land budget can be suitably allocated. The d…
The pre-appropriation of controlling tools : the role of the enabling management
2022
The appropriation of controlling tools is a theme that has been widely addressed research in management over the last twenty years (De Vaujany, 2005, 2006; Carton et al., 2006; Grimand, 2006, 2012, Quemener and Fimbel, 2012; Bessire et al., 2012; Bédé et al., 2012; Bernard, 2019, Couleau-Dupont, 2010, ...). This research has mobilised various theoretical frameworks and methodologies. Some mobilise the theory of appropriation proposed by De Vaujany (2005), some others use theoretical frameworks from other disciplines, such as legitimacy (Suchman, 1995), regulation theory (Reynaud, 1979) or even neo-institutional theory (Di Maggio and Powell, 1991). The literature does not propose a single fr…
1996
The uses of atomic force microscopy, scanning tunneling microscopy, electron spectroscopic imaging, electron energy loss spectroscopy and low voltage, high resolution scanning electron microscopy in polymer research are reviewed
I minori tra nuovi e vecchi media
2020
Il contributo presenta il tema generale della sessione coordinata dall'autrice, sottolineando come il rapporto tra infanzia, media ed educazione, sia diventato sempre più attuale. Quasi ogni aspetto della vita dei minori ha una dimensione online, sia attraverso il loro impegno diretto con le TIC sia attraverso la gestione istituzionale di contenuti o servizi che ne influenzano le condizioni di vita. In questo modo diventa sempre più complesso tracciare il confine tra offline e online, ed è per questo che è necessario esaminare in che modo questo ambiente in evoluzione influisca sul benessere e sullo sviluppo dei bambini dei loro diritti. Il dibattito attuale in molte parti del mondo su mino…
Insights into food system exposure, coping capacity and adaptive capacity
2017
Purpose The purpose of this paper is to consider the concepts of exposure, coping capacity and adaptive capacity as a multiple structure of vulnerability in order to distinguish and interpret short-term coping responses and long-term strategic responses to food system vulnerability. Design/methodology/approach This paper applies an abductive approach for qualitative analysis of data, which were collected through 18 semi-structured interviews among Finnish food system actors. Findings The findings suggest that coping capacity and adaptive capacity are indeed two different concepts, which both need to be addressed in the examination of food system vulnerability. Public and private food syste…
La acción social ante la crisis global
2010
La crisis global exige profundas mutaciones en todos los subsistemas de la sociedad, y requiere de nuevas conceptualizaciones, mapas conceptuales y transiciones técnicas en el ámbito de la intervención social. A partir de las convulsiones del Estado de Bienestar, de las reducciones presupuestarias, del aumento de las demandas en situación de emergencia, de las exigencias de la cultura actual del derecho y de los procesos de mundialización, se recrea el lugar de la acción social: como atención a las privaciones, despliegue de las capacidades y fomento de la acción conjunta. Asimismo, se necesita abrir la acción social a distintos actores: al Estado con sus administraciones, al mercado con su…
Application of multivariate analysis techniques for selecting soil physical quality indicators: A case study in long-term field experiments in Apulia…
2019
Long-term field experiments and multivariate analysis techniques represent research tools that may improve our knowledge on soil physical quality (SPQ) assessment. These techniques allow us to measure relatively stable soil conditions and to improve soil quality judgment, thereby reducing uncertainties. A monitoring of SPQ under long-term experiments, aimed at comparing crop residue management strategies (burning vs. incorporation of straw, FE1) and soil management (minimum tillage vs. no tillage, FE2), was established during the crop growing season of durum wheat. The relationships between five SPQ indicators (bulk density [BD], macroporosity [PMAC], air capacity [AC], plant available wate…
Non-specific bronchial hyper-responsiveness in children with allergic rhinitis: relationship with the atopic status
2003
An increased prevalence of bronchial hyper-responsiveness (BHR) has been demonstrated in children from a general population, and in non-asthmatic adults with allergic rhinitis. Thus, also children with allergic rhinitis are expected to be at higher risk of BHR. We evaluated the prevalence of BHR in a sample of non-asthmatic children with allergic rhinitis by means of the methacholine (Mch) bronchial challenge, and by monitorizing the airway patency using the daily peak expiratory flow variability (PEFv). Fifty-one children (ranged 6-15 years of age) with allergic rhinitis, ascertained by skin prick test to inhalant allergens, underwent a 14-day peak expiratory flow monitoring, and a Mch bro…
Biaxial deformation and ductility domains for engineered rectangular RC cross-sections: A parametric study highlighting the positive roles of axial l…
2016
Abstract Axial load and biaxial bending strongly influence the deformation capacity of column cross-sections, in most cases causing a non-negligible loss of curvature and ductility with respect to the case of pure bending along principal axes, commonly assumed as the basic condition to assess the inelastic capacity. In consideration of this the paper investigates the biaxial deformation performance of RC rectangular cross-sections belonging to one-dimensional elements, focusing on the influence of some parameters as the cross-section aspect ratio and the distribution of the rebars, as well as the mechanical characteristics of concrete and steel and the impact of biaxial/axial stresses. In t…