Search results for "NEWA"
showing 10 items of 2491 documents
Toward Sustainable PLA-Based Multilayer Complexes with Improved Barrier Properties
2019
Poly(lactic acid) or PLA is currently considered as one of the most promising substitutes of conventional plastics, with low environmental impact, especially for food packaging applications. Nevertheless, some drawbacks, such as high permeability to oxygen, are still limiting its industrial applications. The objective of this study was to highly increase the oxygen barrier performance of PLA without compromising its sustainable nature and following the principles of circular economy perspective. Coproducts coming from mill industries, such as wheat gluten proteins (WG), were used to produce PLA-WG-PLA multilayer complexes with improved barrier performance. Different technologies of industri…
Facile and efficient chemical functionalization of aliphatic polyesters by cross metathesis
2016
International audience; An effective preparation of new tailor-made macromolecular materials via a combination of two (atom-efficient) catalytic transformations is reported. First, new aliphatic polyesters with alternated composition have been prepared using a salen aluminum catalyst system. Next, the pendant vinyl moieties in those copolymers have been selectively transformed into various functional groups by metathesis in the presence of homogeneous Grubbs catalysts. The latter metathesis reaction has been optimized in terms of catalytic activity and selectivity, to define the conditions for an effective and safe procedure that does not affect the macromolecular architecture. All polymer …
Impact of Separator Thickness on Temperature Distribution in Single Cell of Polymer Electrolyte Fuel Cell Operated at Higher Temperature of 90 °C and…
2022
The New Energy and Industry Technology Development Organization (NEDO) road map (Japan, 2017) has proposed that a polymer electrolyte fuel cell (PEFC) system, which operates at a temperature of 90 °C and 100 °C, be applied for stationary and mobility usage, respectively. This study suggests using a thin polymer electrolyte membrane (PEM) and a thin gas diffusion layer (GDL), at the same time, to achieve better power-generation performance, at a higher temperature than usual. The focus of this paper is to clarify the effect of separator thickness on the distribution of temperature at the reaction surface (Treact), with the relative humidity (RH) of the supply gasses and initial operation tem…
A Power Law Behavior in the Incentivized Italian Photovoltaic Market
2018
The Italian photovoltaic (PV) marketis analyzed by using the data contained in the database that describes all PV Plants installed in Italy under the incentive program called “2nd Conto Energia”. It is shown that the cumulative probability distribution of the size of the installed PV plants has a broken power tail. An approach to partially quantify the effect of the economic, juridical and technical rules is introduced in order to show how the regulatory body influences the power tail of the cumulative probability curve.
Norme dal patrimonio culturale per la trasformazione e lo sviluppo sostenibile. Sperimentazione applicata al Piano del Colore delle Isole Egadi
2020
L’arcipelago delle isole Egadi, all'estremità occidentale della Sicilia, custodisce un patrimonio architettonico, paesaggistico e ambientale di grande valore. Dal difficoltoso rapporto tra la popolazione insediata e un ambiente per molti versi ostile, è stato forgiato nei secoli un paesaggio eccezionale, frutto di condizioni estreme di sopravvivenza condizionate dalle esigue risorse locali come la pesca del tonno, l'estrazione della pietra da costruzione e l'agricoltura. L’intero arcipelago è oggi soggetto a vincolo paesaggistico per l’alto valore dei suoi elementi costituenti che si configurano, nella loro interezza, come beni culturali. La texture e le cromie della pietra locale, una calc…
Strategic renewal : Can it be done profitably?
2022
Industry transformation requires strategic renewal at the level of individual firms. Executives then face the dilemma of choosing renewal paths in the face of uncertainty over the competitive environment of the future, and hence the profitability of potential strategies. This dilemma motivates us to study industry transformation from the perspective of strategic renewal among 208 large firms in the global pulp and paper industry. The findings of our qualitative comparative analysis show that only a minority of firms in our sample succeeded in profitable proactive renewal. Content-wise, there were similarities in the pursued strategies over the wider population, but only a few maintained sup…
Economic Sustainability of Italian Greenhouse Cherry Tomato
2014
Greenhouse tomato cultivation plays an important role in Sicily, being the primary production area in Italy, due to its favorable pedo-climatic conditions that permit extra-seasonal productions. In Sicily, more than half of greenhouse tomato production is derived from the Province of Ragusa on the southeastern coast, where especially cherry tomato typologies are cultivated. Over the last decade, the Ragusa Province has registered a decrease both in terms of greenhouse tomato area and harvested production due to several structural problems that would require restructuring of the tomato supply chain. Thus, since recognition of real costs and profitability of tomato growing is a vital issue, b…
Efficiency in the Use of Natural Non-renewable Resources and Environmental Federalism in Italy. Evidence from Regional Management of Mining and Quarr…
2013
The separation of powers and responsibilities has evolved over time in Italy given that political ideals have been pushing towards a greater decentralization for the last twenty years. Under environmental federalism issues, an interesting case of study - capable of being empirically treated - is the attribution of power to the Regional governments over the management of mining and quarrying. This process, however, -- started in the ’70s with the Presidential Decree N. 616 of 1977. By examining Regional Laws, this paper highlights how the policy makers have a misleading perception of the real value of raw mineral resources domestically extracted and that these seem closer to common goods rat…
Performance Dissimilarities in European Union Manufacturing: The Effect of Ownership and Technological Intensity
2021
Our paper addresses the relevance of a set of continuous and categorical variables that describe industry characteristics to differences in performance between foreign versus locally owned companies in industries with dissimilar levels of technological intensity. Including data on manufacturing sector performance from 20 European Union member countries and covering the 2009–2016 period, we used the random forests methodology to identify the best predictors of EU manufacturing industries’ a priori classification based on two main attributes: ownership (foreign versus local) and technological intensity. We found that EU foreign-owned businesses dominate locally owned ones in terms of size, wh…
Rola biskupa Franciszka Jopa w dziele odnowy liturgicznej Kościoła po Vaticanum II
2016
Patrząc z perspektywy 40 lat od śmierci pierwszego biskupa opolskiego na jego wpływ na recepcję odnowy liturgicznej w Polsce i w jego diecezji, trzeba zdecydowanie podkreślić jego pozytywny wkład w to dzieło. Analiza dokumentów i jego osobistych notatek pokazuje nam osobę bardzo pracowitego biskupa, który niewątpliwie należał do grona najaktywniejszych polskich ojców soborowych. Jego solidne wykształcenie, znajomość języków obcych, głęboka pobożność oraz gorliwa i roztropna działalność pasterska zjednały mu wielki szacunek w rzymskich komisjach, a także w gronie polskiego Episkopatu. Jako biskup opolski wiedział, że był zobowiązany do wprowadzenia odnowy liturgicznej w swojej diecezji. Było…