Digital Inclusion for Students with Attention Deficit Hyperactivity Disorder

The Attention Deficit Hyperactivity Disorder is a syndrome characterized by distraction, impulsivity, forgetfulness and disorganization. The diagnosis requires considerable care and experience. There are multiples approaches to treatments available, which can be used in combination to meet specific needs. In the academic field, virtual learning environment emerges as a watershed in the life and destiny of students who suffer from the disorder. The objective of this study is to promote digital inclusion for students with ADHD, through a virtual learning environment, in web platform, which will provide tools able to attract attention and stimulate interest in academic activities, aiming to generate significant changes in the process of student development

Challenges of 3d printed architectural ceramic components structures: controlling the shrinkage and preventing the cracking

The use of ceramic materials in the additive manufacturing (AM) of architectural components has more and more examples and undeniably shows the potential of its application. However, one of the main characteristics inherent to this material, which happens in drying and firing phases, is the shrinkage of the material, which causes deformations and cracks in the surface of the produced elements. Thus, the shrinkage of the ceramic material may constitute an obstacle to the regular use of this material in the AM of architectural components. In this sense, it is important to study and point out ways and strategies to mitigate this drawback, making possible the correspondence between the final produced models and the digital ones in which they are based. This paper presents the main challenges and outcomes of several projects that use Liquid Deposition Modelling (LDM) of clay-paste as construction methodology.This work has the financial support of the Project Lab2PT – Landscapes, Heritage and Territory laboratory – AUR/04509 and FCT through national founds and when applicable of the FEDER cofinancing, in the aim of the new partnership agreement PT2020 and COMPETE2020 – POCI 01 0145FEDER 007528

Human Dynamics: The Correspondence Patterns of Darwin and Einstein

While living in different historical era, Charles Darwin (1809-1882) and Albert Einstein (1879-1955) were both prolific correspondents: Darwin sent (received) at least 7,591 (6,530) letters during his lifetime while Einstein sent (received) over 14,500 (16,200). Before email scientists were part of an extensive university of letters, the main venue for exchanging new ideas and results. But were the communication patterns of the pre-email times any different from the current era of instant access? Here we show that while the means have changed, the communication dynamics has not: Darwin's and Einstein's pattern of correspondence and today's electronic exchanges follow the same scaling laws. Their communication belongs, however, to a different universality class from email communication, providing evidence for a new class of phenomena capturing human dynamics.Comment: Supplementary Information available at http://www.nd.edu/~network

Processing parameters in laser powder bed fusion metal additive manufacturing

JPO acknowledges Fundação para a Ciência e a Tecnologia (FCT - MCTES) for its financial support via the projects UIDB/00667/2020 and UIDB/50025/2020 .As metallic additive manufacturing grew in sophistication, users have requested greater control over the systems, namely the ability to fully change the process parameters. The goal of this manuscript is to review the effects of major process parameters on build quality (porosity, residual stress, and composition changes) and materials properties (microstructure and microsegregation), and to serve as a guide on how these parameters may be modified to achieve specific design goals for a given part. The focus of this paper is on laser powder bed fusion, but elements can be applied to electron beam powder bed fusion or direct energy deposition techniques.publishersversionpublishe

Influence of inoculum, particle size and inoculum-substrate ratio on CH4 production from Ulex sp.

The performance of Anaerobic Digestion (AD) of solids wastes is affected by several factors. Most of them are related to each other. Currently, publish studies about AD only care about the individual influence of these variables, discarding possible interaction. A response surface experimental design was used to determine the most important variables and possible interactions – influence of inoculum type (anaerobic suspended sludge and granula sludge), Ulex sp. particle diameter (dp) and inoculum to substrate ratio (ISR) – on the Biochemical Methane Potential (BMP) and the maximum initial methane production rate (k). BMP and k of Ulex sp. varied between 153-308 L CH4 kg-1 VS and 14-49 L CH4 kg-1 VS d-1, respectively. Higher ISR and a mixture of granular and suspended sludge had a positive effect on the biodegradability of waste. A dp of 1.85 mm were defined as the optimal condition to simultaneously maximize the BMP and k

Mitochondrial membrane lipid remodeling in pathophysiology: A new target for diet and therapeutic interventions

Mitochondria are arbiters in the fragile balance between cell life and death. These organelles present an intricate membrane system, with a peculiar lipid composition and displaying transverse as well as lateral asymmetry. Some lipids are synthesized inside mitochondria, while others have to be imported or acquired in the form of precursors. Here, we review different processes, including external interventions (e.g., diet) and a range of biological events (apoptosis, disease and aging), which may result in alterations of mitochondrial membrane lipid content. Cardiolipin, the mitochondria lipid trademark, whose biosynthetic pathway is highly regulated, will deserve special attention in this review. The modulation of mitochondrial membrane lipid composition, especially by diet, as a therapeutic strategy for the treatment of some pathologies will be also addressed.Work at the authors laboratory is supported by the Portuguese Foundation for Science and Technology and FEDER/COMPETE (research Grants PTDC-QUI-QUI-101409-2008; PTDC/QUI-BIQ/ 103001/2008 and Pest-C/SAU/LA0001/2013-2014). J.P.M. acknowledges FCT for Ph.D. Grant SFRH/BD/37626/2007

Co-digestion of Sargassum sp. with glycerol and waste frying oil following a design of experiments

A response surface methodology was adopted to assess the optimal conditions for methane production from the macroalgae Sargassum sp. co-digested with glycerol (Gly) and waste frying oil (WFO). Three variables were tested: % total solids of algae (%TSSargassum sp.), co-substrate concentration (gGly/WFO L-1); and, co-substrate type (Gly or WFO). The Biochemical Methane Potential (BMP) of Sargassum sp. was 181±1 L CH4 kg-1 COD. The co-digestion with Gly and WFO increased the BMP by 56% and 46%, respectively. The methane production rate (k), showed similar behaviour as the BMP, increasing 38% and 19% with Gly and WFO, respectively. The higher BMP (283±18 L CH4 kg-1 COD) and k (65.9±2.1 L CH4 kg-1 COD d-1) was obtained in the assay with 0.5% TS and 3.0 gGly L-1. Co-digestion with Gly or WFO is a promising process to enhance the BMP from the macroalgae Sargassum sp.

Co-digestion of Sargassum sp. with glycerol and waste frying oil: optimization of the biomethane production using a design of experiments

A response surface methodology was adopted to assess the optimal conditions for methane production from the macroalgae Sargassum sp. Three variables were tested: % total solids of algae (%TSsargassum); co-substrate concentration (gwaste L-1); and, co-substrate type (glycerol or waste frying oil (WFO)). The Biochemical Methane Potential (BMP) of Sargassum sp. was 300 ± 3 L CH4 kg-1 COD. The co-digestion with glycerol and WFO increased the BMP by 72% and 68% respectively. The methane production rate (k), showed similar behavior as the BMP, increasing 45% and 29% with glycerol and WFO, respectively. The higher BMP (517 ± 13 L CH4 kg-1 COD) and k (78± 4 d-1) was obtained in the assays with 0.5% TS and 3.0 g glycerol L-1. Co-digestion with glycerol or WFO is a promising process to enhance the BMP from the macroalgae Sargassum sp

On the simulation of the filling stage of thermoplastic injection molding using the open-source solver openInjMoldSim

NORTE-07-0162-FEDER-000086 and the Minho Advanced Computing Center (MACC) for providing HP