Huelva, Spain

University of Huelva

www.uhu.es
Huelva, Spain

The University of Huelva is a public university in Huelva, Spain. Wikipedia.


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Grant
Agency: European Commission | Branch: H2020 | Program: CSA | Phase: MSCA-NIGHT-2016 | Award Amount: 368.01K | Year: 2016

Open Researchers is the fifth experience of Andalusia in the European Researchers Night. The project is designed to increase the awareness of research as a solution to the numerous challenges faced by citizens all around the world and mainly in Europe. The idea of the project, The future is today: understandable ground-breaking science for a better living, has been conceived in a time of change, a moment where becomes clearer that we must join efforts to find sustainable, equal, innovative and creative solutions to give answer to the societal challenges. To this end, according to the RRI, it is essential to promote young peoples interest in Science and Research by opening it to general public through its main protagonists, researchers. The projects major strength is the numerous activities taking place on main streets, museums, theatres, and historical buildings of the eight Andalusian cities, the high mobilization of researchers and the involvement of Municipalities, which will have a high social impact in the region. Given the projects dimensions in a wide region with 8.3 million people, it will be developed with a high and effective presence in terms of human and technical resources, and with the collaboration of the main local institutions, NGOs, private companies, teachers and civil associations. The communication campaign aims at reach every third citizen of Andalusia, and with activities in city-centre venues around 65.000 attendees each year are expected. Fundacin Descubre will coordinate this project, based in its experience through the last 7 years working with relevant projects in Spain and fundamentally in its consortium experience in the four editions of this project in Andalusia. The consortium is composed by nine Andalusian universities, the Spanish National Research Council (CSIC), Andalusian Foundation Progress and Health, and the Royal Botanical Garden of Crdoba, all dedicated to higher education, research and Science popularization.


Patent
University of Seville and University of Huelva | Date: 2016-11-16

The invention relates to a novel method for producing magnets (especially applicable to the production of magnets containing rare earths). The novelty of the method lies in its use of a type of electrical consolidation (such as so-called electrical resistance sintering, ERS, or so-called electrical discharge consolidation, EDC, but not necessarily one of the these) as a substitute for the conventional cold pressing and sintering method which is usually used. The method according to the invention achieves: (1) combining the compacting/sintering steps, significantly cutting the duration thereof and reducing the magnitude of the working pressures; (2) implementing the steps of magnetic aligning, pressing/sintering, heat treatment and magnetising in the same matrix; and (3) rendering superfluous the use of protective atmospheres during the sintering process.


Dsouza R.N.,Jacobs University Bremen | Pischel U.,University of Huelva | Nau W.M.,Jacobs University Bremen
Chemical Reviews | Year: 2011

Fluorescence detection is well-known for its high sensitivity in photochemistry, analytical chemistry, biochemistry, and beyond. For applications in the environmental and life sciences, the water-soluble fluorescent dyes reviewed here are most relevant. However, the conversion of a fluorescent dye to a chemosensor or chemosensing ensemble requires the introduction of recognition motifs for particular analytes or particular classes of analytes. To the degree that the recognition event is based on a reversible, intermolecular interaction, water-soluble macrocyclic receptors have become attractive subjects for investigation in combination with fluorescent dyes. The resulting supramolecular host/guest complexes as well as their applications in indicator displacement types of assays have also been examined in detail in this review.


Andreasson J.,Chalmers University of Technology | Pischel U.,University of Huelva
Chemical Society Reviews | Year: 2015

In this tutorial review, the most recent developments in the field of molecular logic and information processing are discussed. Special emphasis is given to the report of progress in the concatenation of molecular logic devices and switches, the design of memory systems working according to the principles of sequential logic, the mimicking of transistors, and the research on photochromic platforms with an unprecedented degree of functional integration. Furthermore, a series of achievements that add up to the conceptual diversity of molecular logic is introduced, such as the realization of highly complex and logically reversible Toffoli and Fredkin gates by the action of DNAzymes or the use of a multifluorophoric platform as a viable approach towards keypad lock functions. This journal is © The Royal Society of Chemistry.


Pischel U.,University of Huelva
Angewandte Chemie - International Edition | Year: 2010

Commit to memory: Whereas combinational logic devices are indifferent with respect to the history of input application, sequential logic is related to a memory function. A proof-of-principle of the sequential logic concept at the molecular level was demonstrated recently with a surface-confined osmium complex (see picture). This is an important conceptual advance toward molecular information processing. (Figure Presented) © 2010 Wiley-VCH Verlag GmbH &. Co. KGA,.


Caballero A.,University of Huelva | Perez P.J.,University of Huelva
Chemical Society Reviews | Year: 2013

In spite of its large availability in natural or shale gas deposits, the use of methane in the chemical industry as feedstock from a synthetic point of view yet constitutes a challenge in modern chemistry. Only the production of the so-called syngas, a mixture of CO and H2 derived from the complete cleavage of the methane molecule, operates at the industrial level. The relevance of methane in the current industry, mainly toward methanol production, is described in this Tutorial. The methanol economy has been already proposed as an alternative to current fuel sources. Methanol synthesis directly from methane would imply the activation of the latter. Toward this end, the different methodologies reported to activate methane with transition metal complexes as well as the few examples of the catalytic functionalization of methane are presented. This journal is © The Royal Society of Chemistry.


Granodiorites and tonalites (Granotonalites in this review paper) form large batholiths at active continental margins and collisional orogens. Although the relation with subduction is obvious, the mechanisms of magma generation remain among the most debated topics in Earth Sciences today. The most outstanding features of these calc-alkaline batholiths are summarized in this review. The problem has been addressed by laboratory experiments along decades. Dispersed data from experimental studies are compiled here in order to give phase equilibria constraints of general application. It is apparent from chemical data that major-element compositional trends follow cotectic patterns whose composition is largely dependent on intensive variables. The comparison between experiments and batholith chemical trends produces an empirical thermodynamic framework useful to understand in a first approach the origin and evolution of magmas forming granite batholiths.A new projection scheme of rock compositions onto the pseudoternary plane defined by the Fe. +. Mg, anorthite, orthoclase, is given. This can be taken as first approach to phase equilibria model of batholiths. It has been revealed useful to distinguish processes controlled by increasing (melting) or decreasing (crystallization) magma temperature from processes controlled by assimilation or magma mixing.The available experimental data, although scarce, can be used to tentatively depict phase equilibria in the projected pseudoternary F-An-Or diagram. Although important limitations are imposed by the projective procedure, phase equilibria relations in equilibrium with liquids can be drafted in the diagram. The stability fields of mineral in areas close to the liquid are defined according to reported phase assemblages in the experimental studies of reference. The diagram is robust to identify cotectic and non-cotectic relations.Phase equilibrium constraints and rock textures have revealed that one of the most important parameter controlling phase equilibria in granite magmas is the initial water content. Typically, calc-alkaline granitoids, from Qtz-diorite to granotonalite and granite, have crystallized from strongly undersaturated (water) magmas. Low initial water contents (Wi) in the range 1-2wt.% H2O may account for residual saturated melt fractions as low as 0.1-0.2 for plutons emplaced at 400MPa. The water content of these residual melt fractions is enough to stabilize hydrous minerals, namely Hbl and Bt as predicted by experiments. The initial water content is a primary feature of the magma and it is directly related to the melting reaction and, more precisely, to the temperature of magma generation.The study of compositional trends supports magma fractionation by crystal-liquid separation as a relevant role. As a first approach, the pressure-composition relations in the melts can be seen as a response to the composition of the solid saturating assemblage, and particularly related to the ratio Grt/Pl in the solid residue. © 2013 Elsevier B.V.


Andreasson J.,Chalmers University of Technology | Pischel U.,University of Huelva
Chemical Society Reviews | Year: 2010

Molecular logic is an interdisciplinary research field, which has captured worldwide interest. This tutorial review gives a brief introduction into molecular logic and Boolean algebra. This serves as the basis for a discussion of the state-of-the-art and future challenges in the field. Representative examples from the most recent literature including adders/subtractors, multiplexers/demultiplexers, encoders/decoders, and sequential logic devices (keypad locks) are highlighted. Other horizons, such as the utility of molecular logic in bio-related applications, are discussed as well. © 2010 The Royal Society of Chemistry.


Grant
Agency: European Commission | Branch: FP7 | Program: MC-IAPP | Phase: FP7-PEOPLE-2013-IAPP | Award Amount: 2.73M | Year: 2014

ISSFLOW aims at developing fundamental understanding of complex fluids to allow for the design of smart and functional gels and fluids via the development of novel rheology modifiers. A consortium of 5 partners (1 large industry, 1 SME and 3 academics) has been set up to exchange knowledge in the areas of rheology, sustainable synthesis and scale-up of novel molecules, modeling, characterization of complex fluids (including high viscous fluids and gels) via scattering, NMR and microscopy techniques, and production of finished products in a broad number of applications ranging from detergents and pharmaceuticals to restoration of paintings and lubricants. The overall generated knowledge will be integrated in an overarching model that will be able to predict the best rheology modifier for a specific application, taking into account final rheology properties required, performance, process and aesthetics, facilitating the launch of improved or new products to the market.


Grant
Agency: European Commission | Branch: FP7 | Program: CP-TP | Phase: KBBE.2013.3.2-02;KBBE.2013.3.6-01 | Award Amount: 11.91M | Year: 2013

Microalgae are a promising feedstock for sustainable supply of commodities and specialties for food and non-food products. Despite this potential the implementation is still limited which is mainly due to unfavourable economics. Major bottlenecks are the lack of available biomass at acceptable costs and the absence of appropriate biorefinery technologies. The 4-year MIRACLES project aims to resolve these hurdles by development of integrated, multiple-product biorefinery for valuable specialties from algae for application in food, aquafeeds and non-food products. The focus is on development and integration of mild cell disruption and environmentally friendly extraction and fractionation processes including functionality testing and product formulation based on established industrial strains. The project will also develop new technologies for optimization and monitoring of valuable products in the algal biomass during cultivation and innovative photobioreactor and harvesting technology that will enable substantial cost reduction. A new technology will be developed for CO2 concentration from the air for algal growth and new industrial algae strains for extreme locations will be selected via bioprospecting to expand the resource base for the algae industry and enable cultivation in areas less suitable for agriculture such as deserts. The work is supported by market assessment, integral biorefinery designs, techno-economic and sustainability assessment, and the creation of business plans for full valorisation of algal biomass. Integrated value chains will be demonstrated to deliver proof-of-concept and demonstrate economic feasibility. MIRACLES is an industry driven R&D and innovation project with a multidisciplinary approach aimed at generating robust business cases through technology development. The consortium has 26 partners with 11 prominent research organisations. Strong industrial leadership is guaranteed through the participation of 12 SMEs and 3 NMI/end users.

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