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Now showing items 1201-1210 of 1302
Lactide-caprolactone copolymers with tuneable barrier properties for packaging applications
(Elsevier, 2020-06-07)
Lactide-caprolactone copolymers have been synthetized employing two metallic catalysts, Ph3Bi and SnOct2. The analysis of the microstructure by NMR reveals that gradient like copolymers are obtained with SnOct2 catalyst, ...
Na-Ion Batteries—Approaching Old and New Challenges
(Wiley, 2020-10-11)
The last 10 years established the beginning of a post-lithium era in the field of energy storage, with the renaissance of Na-ion batteries (NIBs) as alternative for Li-based systems. The development of this technology has ...
Exact Learning: On the Boundary between Horn and CNF
(ACM, 2020-02-11)
A major problem in computational learning theory is whether the class of formulas in conjunctive normal
form (CNF) is efficiently learnable. Although it is known that this class cannot be polynomially learned using either ...
Energy efficiency optimisation in industrial processes: Integral decision support tool
(Elsevier, 2020)
Assessing and improving energy efficiency in manufacturing processes is a crucial issue for companies who wish to become competitive. In addition, there are high margins of technical energy efficiency improvement for ...
Hit and sunk: provenance and alterations of ceramics from seventeenth century Angra D shipwreck
(2020-07-21)
A set of 34 archaeological ceramics, including olive jars, transparent green lead glazed, tin-lead glazed and unglazed ceramics, from seventeenth century Angra D shipwreck found at Terceira Island (Azores Archipelago, ...
Hydrothermal treatments of walnut shells: a potential pretreatment for subsequent product obtaining
(Elsevier, 2020-10-08)
Walnuts are nowadays widely consumed. Since the edible part of walnuts does not account more than 50-60% of their total weight, the total amount of shells produced annually is huge. However, as walnut shells are part of ...
Grigorchuk-Gupta-Sidki groups as a source for Beauvile surfaces
(EMS Press, 2020-06-25)
If G is a Grigorchuk-Gupta-Sidki group defined over a p-adic tree, where p is an odd prime, we study the existence of Beauville surfaces associated to the quotients of G by its level stabilizers stG(n). We prove that if G ...
Inflection, Canards and Folded Singularities in Excitable Systems: Application to a 3D FitzHugh–Nagumo Model
(Springer, 2020-09-07)
Specific kinds of physical and biological systems exhibit complex Mixed-Mode Oscillations mediated by folded-singularity canards in the context of slow-fast models. The present manuscript revisits these systems, specifically ...
Environmental management certification and environmental performance: Greening or greenwashing?
(Wiley, 2020-09)
This article analyzes the contribution of certifiable environmental management
standards—such as ISO 14001 and the Eco-Management and Audit Scheme
(EMAS)—to corporate environmental performance. Based on a content analysis ...
Expression of Resilience, Coping and Quality of Life in people with cancer
(PLoS ONE, 2020)
Considering the importance of coping strategies and resilience in adapting to the stress
caused by cancer, the objective of this research is to explore which coping strategies are the
most used, in order to know whether ...