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The effect of primary treatment of wastewater in high rate algal pond systems: biomass and bioenergy recovery
(2019-05)
Article
Accés restringit per política de l'editorialThe aim of this study was to assess the effect of primary treatment on the performance of two pilot-scale high rate algal ponds (HRAPs) treating urban wastewater, considering their treatment efficiency, biomass productivity, ... -
Continuing professional education in engineering faculties: transversal integration of sustainable human development in basic engineering sciences courses
(2019-05)
Article
Accés restringit per política de l'editorialThe integration of sustainable development in higher education is increasingly recognised as a priority for a growing number of universities. Nonetheless, numerous barriers for change remain and particular attention should ... -
Transversally and longitudinally stiffened steel plate girders subjected to patch loading
(2019-05)
Article
Accés restringit per política de l'editorialThis article presents some observations related to the phenomenon that occurs when transversally and longitudinally stiffened steel plate girders are subjected to patch loading. The failure mechanism differs considerably ... -
Contribution of externally bonded FRP shear reinforcement to the shear strength of RC beams
(Elsevier, 2019-05)
Article
Accés restringit per política de l'editorialAn experimental program of T-beams strengthened in shear by CFRP sheets has been developed with two longitudinal reinforcement ratios and different externally bonded CFRP shear strengthening amounts in a discontinuous or ... -
Influence of liquid-to-biogas ratio and alkalinity on the biogas upgrading performance in a demo scale algal-bacterial photobioreactor
(2019-05)
Article
Accés obertThe influence of the liquid-to-biogas ratio (L/G) and alkalinity on methane quality was evaluated in a 11.7 m3 outdoors horizontal semi-closed tubular photobioreactor interconnected to a 45-L absorption column (AC). CO2 ... -
Antimagic labelings of caterpillars
(2019-04-15)
Article
Accés restringit per política de l'editorialA k-antimagic labeling of a graph G is an injection from E(G) to {1,2, ..., |E(G)|+k} such that all vertex sums are pairwise distinct, where the vertex sum at vertex u is the sum of the labels assigned to edges incident ... -
Effect of oxidized wood flour as functional filler on the mechanical, thermal and flame-retardant properties of polylactide biocomposites
(2019-04-01)
Article
Accés restringit per política de l'editorialBased on the biodegradable material-polyethylene glycol (PEG)-as the plasticizer, oxidized wood flour (OWF) as the charring agent for polylactide (PLA), a series flame-retardant PLA biocomposites were prepared via ... -
Closed-form equation for natural frequencies of beams under full range of axial loads modeled with a spring-mass system
(2019-04-01)
Article
Accés obertA new simple closed-form equation that accurately predicts the effect of an arbitrarily large constant axial load, residual stress or temperature shift on the natural frequencies of an uniform single-span beam, with various ... -
Recovery of sulphuric acid and added value metals (Zn, Cu and rare earths) from acidic mine waters using nanofiltration membranes
(2019-04-01)
Article
Accés restringit per política de l'editorialAcidic mine waters (AMWs) contain, in addition to moderate concentrations of sulphuric acid, relatively high concentrations of transition elements (e.g. Fe, Al, Cu, Zn) and, in some cases, minor amounts of valuable rare ... -
Determination of the Vertical Vibration of a Ballasted Railway Track to Be Used in the Experimental Detection of Wheel Flats in Metropolitan Railways
(2019-04-01)
Article
Accés restringit per política de l'editorialThis article presents a mathematical model used to obtain the vertical vibration of a ballasted railway track when a wheel is passing at a certain speed over a fixed location of the rail. The aim of this simulation is to ... -
Model predictive control and moving horizon estimation for water level regulation in inland waterways
(2019-04-01)
Article
Accés restringit per política de l'editorialThis work regards the design of optimization techniques for the purposes of state estimation and control in the framework of inland waterways, often characterized by negligible bottom slopes and large time delays. The ... -
Trapezoid central configurations
(2019-04-01)
Article
Accés restringit per política de l'editorialWe classify all planar four–body central configurations where two pairs of the bodies are on parallel lines. Using cartesian coordinates, we show that the set of four–body trapezoid central configurations with positive ... -
Evaluation of torrefied poplar-biomass as a low-cost sorbent for lead and terbium removal from aqueous solutions and energy co-generation
(2019-04-01)
Article
Accés restringit per política de l'editorialTwo low-cost renewable poplar-based materials were manufactured in this work for energy production and as sorbents for lead and terbium removal from aqueous effluents. Torrefaction was used as a pretreatment process for ... -
Anticipatory kinodynamic motion planner for computing the best path and velocity trajectory in autonomous driving
(2019-04-01)
Article
Accés restringit per política de l'editorialThis paper presents an approach, using an anticipatory kinodynamic motion planner, for obtaining the best trajectory and velocity profile for autonomous driving in dynamic complex environments, such as driving in urban ... -
Allelochemicals and esters from leaves and inflorescences of Sambucus nigra L
(2019-04-01)
Article
Accés restringit per política de l'editorialAllelochemical compounds were detected in leaves and inflorescences of Sambucus nigra L. by means of GC-EIMS. The identified compounds were characterized by their mass spectra and relative retention times as their ... -
A recurrent convolutional neural network approach for sensorless force estimation in robotic surgery
(2019-04)
Article
Accés restringit per política de l'editorialProviding force feedback as relevant information in current Robot-Assisted Minimally Invasive Surgery systems constitutes a technological challenge due to the constraints imposed by the surgical environment. In this context, ... -
A dynamic spring element model for the prediction of longitudinal failure of polymer composites
(2019-04)
Article
Accés restringit per política de l'editorialA spring element model that takes into account the dynamic effects associated with fibre failure in composite materials is presented. The model is implemented in a parallel environment to allow a better performance in the ... -
Model-based evaluation of a trickling filter facility upgrade to biological nutrient removal
(Elsevier, 2019-04)
Article
Accés restringit per política de l'editorialThis article presents the feasibility evaluation and preliminary design of a wastewater treatment plant upgrade supported by simulation. The existing facility was based on trickling filters, and the objective of the upgrade ... -
From a feeder port to a hub port: the evolution pathways, dynamics and perspectives of Ningbo-Zhoushan port (China)
(2019-04)
Article
Accés restringit per política de l'editorialThis paper analyses the spatio-temporal evolution of Ningbo-Zhoushan port growing from a feeder port to a hub port finding the historical pathways followed by its expanding in terms of container throughput capacity and ... -
In situ measurements and thermo-mechanical simulation of Ti–6Al–4V laser solid forming processes
(2019-04)
Article
Accés restringit per política de l'editorialResidual stresses and distortions are two technical obstacles for popularizing the additive manufacturing (AM) technology. The evolution of the stresses in AM components during the thermal cycles of the metal depositing ...
