Learning roadmaps for Higher Education

An integrated platform for the support of teaching activities as been developed and deployed at the Aveiro Norte Polytechnic School of the University of Aveiro. In this paper we present an approach to Learning Roadmaps for Higher Education based on this platform. The aprend.e platform – Electronic Integrated System for Learning and Training - has at its core a Learning Management System with a number of plugins. It represents a new challenge for the University of Aveiro for higher education and is already being at its core is the concept of learning roadmaps that act upon two fundamental axes: education and learning. For the teachers, it aims at becoming a self-supporting tool that stimulates the organization and management of the course materials (lectures, presentations, multimedia content, and evaluation materials, amongst others). For the students, the learning roadmap aims at promoting self-study and supervised study, endowing the pupil with the capabilities to find the relevant information and to capture the concepts in the study materials. The outcome will be a stimulating learning process together with an organized management of those materials

La paz transformadora: una propuesta para la construcción participada de paz y la gestión de conflictos desde la perspectiva sociopráxica (Transformative peace: a participatory peace building and conflict management proposal from the sociopraxic perspective)

En el artículo se expone un marco epistemológico y teórico-metodológico para la ciencia de la paz y el conflicto. Esta propuesta, desarrollada desde la perspectiva sociopráxica, plantea una conceptualización del conflicto social y la paz como procesos vivos y activos cuyos principales protagonistas son los seres humanos y las redes de relaciones sociales constituidas por y constituyente de las mismos. De acuerdo con el marco enunciado, los modelos convivenciales violentadores son sustituidos por modelos convivenciales sinérgicos con los que atender las necesidades. | The article presents an epistemological, theoretical/methodological framework for peace and conflict. This proposal, developed from the sociopraxic perspective, raises a conceptualization of social conflict and peace as living and active processes whose main protagonists are human beings and the networks of social relations constituted by and constituent of them. In accordance with the proposed framework, convivial models responsible for violence are replaced by synergic convivial models with which to attend needs

Iranian Nuclear Program: Domestic Implications

The intent for this thesis is to explain and inform the process of the Iranian Nuclear Program throughout the last decades. The stand of the Islamic Republic of Iran has brought very delicate issues and confrontations to the international community. This thesis discusses the history of key countries that play an important part into developing the Iranian nuclear program. These countries being the United States, Israel, Russia and other countries part of the UN Security Council. This thesis also attempts to analyze and focuses on the domestic policies the government of Iran and its people have interacted with the nuclear deal. The nuclear deal between the UN Security Council members and the Islamic Republic of Iran have shown an array of acceptance and rejection within, specially, the United States, Arab countries in the region and Israel. The implementations of the solution to future confrontation are probably the main ideal to a healthy international community who can adapt to new measures and policies to a safer world. Using classical realist theory, based on Hans J. Morgenthau realist theory, the Iranian nuclear program could be explained with a different perspective. There are other international relations theories that could help explaining Iran’s government behavior and how it interacts with the international community. Iran’s move in the past years has shown progress towards the international community and has lowered the potential military action against Iran. Some countries like Israel continue on the dissatisfaction against the nuclear deal signed by Iran and the UN Security Council member countries. This thesis will show the behavior the country of Iran has had towards other countries based on their domestic policy

Bay leaves extracts as active additive for food protective coatings

Ethanolic extracts of bay leaves were obtained using the Soxhlet method (extraction yield of 22.3 ± 1.2%) and further analyzed through different methods, thus determining the chemical composition with gas chromatography, phenolic content with the Folin–Ciocalteu technique (11.8 ± 0.4% wt.) and antioxidant power with the radical 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) method (75.06%). Furthermore, its effect on the growth of two bacteria, Escherichia coli and Bacillus cereus, and on two yeasts, Candida glabrata and Saccharomyces cerevisiae, was determined, showing a minimum inhibitory concentration of 0.65 mg/mL on the growth of B. cereus. Finally, edible films were prepared using different polymers (carboxymethyl cellulose, gum Arabic, polyvinyl pyrrolidone, and polyvinyl alcohol) containing 0, 5, 10, or 15% wt. of bay leaf extract as troubleshooting for perishable fruits, specifically for cultivated strawberry. The prepared composites presented reduced water vapor permeabilities (up to 4.3 × 10−7 g·Pa−1·m−1·h−1), high specific transparencies (≈30%/mm), as well as the effective blocking of ultraviolet radiation (>99.9%). In vivo tests showed that the most suitable treatment for strawberry protection was the impregnation with a composite comprising polyvinyl alcohol and a 15% wt. bay leaf extract, resulting in a noteworthy reduction in mass loss (22% after 6 days). It can be asserted that food packaging with the designed composites would be an effective alternative for the reduction in postharvest losses

Use of plant extracts to block bacterial biofilm formation

Proceedings of the I Congress PIIISA celebrado en la Estación Experimental del Zaidín (Granada), en mayo de 2013.We live surrounded by bacteria; in fact, in only one gram of soil we can find millions of bacterial cells. Our body houses more than 1014 bacteria. Even though some of these microorganisms can cause us problems, such as caries, actually most of them help in the proper functioning of our organism. Generally, bacteria coexist setting up communities associated to solid superficies, this is to which we refer as biofilms, that serve as a survival strategy. This type of formation cause serious sanitary problems for both humans and animals. Nowadays, chemical or natural compounds able to block this formation are looked for. In this project, we have set out how to use extracts of different plants with the purpose of testing their effects against biofilms of two bacterial species: Escherichia coli and Pseudomonas putida.This work was supported in part by grant BFU2010-17946 from the Plan Nacional de I+D+I.Peer reviewe

Linear Strain Tensors on Hyperbolic Surfaces and Asymptotic Theories for Thin Shells

We perform a detailed analysis of the solvability of linear strain equations on hyperbolic surfaces. We prove that if the surface is a smooth noncharacteristic region, any first order infinitesimal isometry can be matched to an infinitesimal isometry of an arbitrarily high order. The implications of this result for the elasticity of thin hyperbolic shells are discussed

Design of a Bubble Reactor for Altitude Simulators Used to Humidify a Combustion Air Stream by Means of CFD Multi-Phase Models

[EN] In this paper, a procedure for the design of a bubble reactor which allows the control of the humidity of a gas stream used as combustion air is presented. This reactor is designed to be used as a component of an altitude simulator test facility for the optimization, homologation and calibration of new hybrid engines. The design has been carried out by means of Computational Fluid Dynamics (CFD) multi-phase models and validated against the experimental data obtained from the developed prototype. A discussion about the adequate mesh topology and cell size is presented, as well as a comparison between the two available models for the air-water interphase. Lastly, a validation of the CFD results using experimental data shows that the model that should be used is the multi-regime interaction model, from which the final design for the bubble reactor was obtained.This research has been partially supported by Universitat Politecnica de Valencia through project PAID-01-18.Serrano, J.; Gil, A.; Quintero-Igeño, P.; Tabet-Aleixandre, R.; Gómez, J. (2021). Design of a Bubble Reactor for Altitude Simulators Used to Humidify a Combustion Air Stream by Means of CFD Multi-Phase Models. Applied Sciences. 11(1):1-15. https://doi.org/10.3390/app11010295S11511

Benthic litter distribution on circalittoral and deep sea bottoms of the southern Bay of Biscay: Analysis of potential drivers

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Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy

In this work we demonstrate the capability of two gain-switched optically injected semiconductor lasers to perform high-resolution dual-comb spectroscopy. The use of low duty cycle pulse trains to gain switch the lasers, combined with optical injection, allows us to obtain flat-topped optical frequency combs with 350 optical lines (within 10 dB) spaced by 100 MHz. These frequency combs significantly improve the spectral resolution reported so far on dual-comb spectroscopy with gain-switched laser diodes. We evaluate the performance of our system by measuring the transmission profile of an absorption line of H13CN at the C-band, analyzing the attainable signal-to-noise ratio for a range of averaging times