Now showing items 155-174 of 222

    Partial oxidation of methane into syngas at low temperature 

    Fazlikeshteli, Shiva (Date of defense: 2023-10-27)

    (English) Syngas (a mixture of H2 and CO) is a versatile feedstock that can be used to produce a wide range of chemicals and fuels. For that reason, there is a great interest to optimize and explore new routes for its ...

    Polyesters containing cyclic carbohydrate-based units obtained by ring opening polymerization 

    Morales Huerta, Juan Carlos (Date of defense: 2018-02-26)

    In recent years, as a result of climate change, the interest in sustainable materials has increased dramatically. The replacement of compounds of petrochemical origin by bio-based has spread to all areas of chemistry. ...

    Polymer-zirconia based ceramic composites produced by 3D-printing 

    Hodásová, L'udmila (Date of defense: 2022-11-09)

    (English) Zirconia ceramic is widely used in numerous fields, such as electronics, machinery, and biomedical applications, due to its excellent properties as chemical resistance, thermal stability, electrical resistance, ...

    Polymers and peptide-polymer conjugates as bioactive platforms and carriers for the encapsulation of biomolecules 

    Maione, Silvana (Date of defense: 2017-09-14)

    In the last decade, conductive polymers have received great interest in both scientific and technological levels due to the electroactive properties exhibited by these materials. For this reason, the main aim of this ...

    Posttranslational modifications of human M3 muscarinic acetylcholine receptor: zooming in its functional implications 

    Romero Fernández, Wilber (Date of defense: 2011-05-20)

    The human M3 muscarinic acetylcholine receptor (M3R) regulates many important physiological roles in the central and peripheral nervous systems, and it is involved in the pathophysiology of several neurodegenerative and ...

    Preparation and characterisation of bimetallic catalysts for the steam reforming of methane 

    Braga, Andrea (Date of defense: 2024-01-25)

    (English) Heterogeneous catalysis is one of the most important chemical technologies available today to produce most chemicals at the basis of industrial production. The transition to a greener energy production demands ...

    Proactive management of uncertainty to improve scheduling robustness in proces industries 

    Bonfill Teixidor, Anna (Date of defense: 2006-12-18)

    Dinamisme, capacitat de resposta i flexibilitat són característiques essencials en el desenvolupament de la societat actual. Les noves tendències de globalització i els avenços en tecnologies de la informació i comunicació ...

    Processos físico-químics i biològics en el tractament d'aigües àcides de mina: Aplicació a barreres permeables reactives 

    Gibert Agulló, Oriol (Date of defense: 2004-07-21)

    CATALA <br/> <br/>La contaminació de les aigües superficials i subterrànies representa el problema mediambiental més greu a què s'ha d'enfrontar la indústria minera, a causa de les denominades aigües àcides de mina (AAM), ...

    Processos que afecten la mobilitat de l'urani en entorns hiperalcalins oxidants i sediments contaminats 

    Meca Fàbrega, Alejandra (Date of defense: 2009-05-12)

    L'urani es troba present en el medi a baixes concentracions en roques, sòls i aigua, però l'activitat industrial i el desenvolupament de la tecnologia nuclear ha suposat la generació de grans quantitats de residus i zones ...

    Producción de hidrógeno a partir de amoniaco en reactores de paredes catalíticas 

    Lucentini, Ilaria (Date of defense: 2021-11-05)

    Due to the problems associated with the generation and storage of hydrogen in portable applications, the use of ammonia fer the on-site production of hydrogen through its catalytic decomposition has been proposed. This ...

    Producción de hidrógeno a partir del reformado con vapor de dimetil éter utilizando monolitos catalíticos 

    Ledesma Rodríguez, Cristian (Date of defense: 2011-11-25)

    El modelo actual del consumo energético basado en la utilización de combustibles fósiles requiere un replanteamiento debido al agotamiento de éstos y a las emisiones de gases contaminantes que generan. La obtención de ...

    Quantitative dispersion analysis of leakages of flammable and/or toxic substances on environments with barriers or semi-confined 

    Miralles Schleder, Adriana (Date of defense: 2015-07-08)

    With the industrial and technological development of the present-day society, the presence of flammable and toxic substances has increased in a growing number of activities. Dispersion of hazardous gas releases occurring ...

    Rare earth elements recovery from E-wastes by solvent extraction and supported liquid membrane processes 

    Pavón Regaña, Sandra (Date of defense: 2019-11-28)

    Nowadays, rare earth elements (REEs) have gained importance due to their indispensable and critical use in many high-tech industries like hybrid cars, fluorescent lamps, flat screen televisions, mobile phones, disc drives ...

    Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes 

    Sequeira, Sebastián Eloy (Date of defense: 2003-07-15)

    En general, el control de procesos es muy eficiente cuando el punto de operación deseado ha sido determinado a priori y el sistema tiene capacidad suficiente para responder a las perturbaciones. Mientras el control de ...

    Recovery of polyphenols by extraction and purification technologies from orange and spinach processing residues 

    Montenegro Landivar, María Fernanda (Date of defense: 2022-09-21)

    The residues resulting from orange and spinach processing, composed mainly by peels and seeds; and leaves, respectively, contain relevant amounts of polyphenols, so they can be used as raw material for recovery natural ...

    Removal of boron from aqueous solutions using biopolymers and composites 

    Demey Cedeño, Hary (Date of defense: 2014-11-25)

    The growing concern over environmental pollution in recent decades has placed increasing focus on research into the development of sustainable processes associated with the removal of contaminants in waters. Water is scarcer ...

    Resines acríliques modificades com a nous productes de readobament i/o adobament sense formol ni fenol 

    Canudas Ventura, Miquel (Date of defense: 2020-07-24)

    The leather manufacturing process consists of a sequence of complex chemical reactions and mechanical processes that allow turning skin, a putrefiable by-product of alimentary industry, into leather, a stable high-value-added ...

    Revestimientos a base de sílica e ácido fosfônico para proteção anticorrosiva da liga de alumínio AA2024-T3 

    Dalmoro, Viviane (Date of defense: 2013-11-04)

    The aluminum alloy AA2024-T3, u sed extensively in the aerospace industry, dueto the heterogeneous microstructures intentionally designed to optím ize the m echanical properties, is very susceptible to localízed corros ...

    Risk analysis of jet fires thermal effects 

    Foroughi, Vahid (Date of defense: 2023-09-20)

    (English) The historical analysis performed has shown that jet fires have been the origin of a high number of domino effect accidents, both in the process industry and in the transportation of flammable fluids by pipelines ...

    The role of superplasticizers and their degradation products on radionuclide mobility 

    García Cobos, David Manuel (Date of defense: 2018-09-20)

    The most widely accepted option for the long-term management of radioactive waste materials considers their disposal in deep underground facilities (examples are Finland, Belgium, France, Sweden, etc.). Such installations ...