Now showing items 42-61 of 101

    Engineered nanomaterials release from nano-enabled products 

    Pomar-Portillo, Vicenç (Date of defense: 2021-12-21)

    The increased presence of nano-enabled products in multiple applications has raised concerns about its potential risks to human health and the environment. Therefore, there is a need for a responsible and coordinated ...

    Espectrometría de masas de alta resolución y en tándem. Análisis de alto rendimiento de contaminantes orgánicos emergentes en agua 

    Flores Rubio, Cintia (Date of defense: 2016-01-25)

    En los últimos años, los contaminantes emergentes (ECs) están recibiendo una creciente atención debido a los efectos nocivos que suponen para los organismos vivos y al riesgo ambiental que representan. Existen una gran ...

    Estudi comparatiu de les reaccions d'anionització, en estat sòlid, d'aquo-complexos de crom (III) amb diverses amines: en, tmd, chx i mixtes 

    Corbella i Cordomí, Montserrat (Date of defense: 1986-01-01)

    En aquesta Tesi s'ha volgut veure l'efecte del volum dels lligands i dels anions (que varien l'espai lliure) en l'energia d'activació. Per arribar a conclusions rigoroses caldria tenir les estructures cristal·lines i ...

    Estudi de molècules orgàniques fòssils per a la caracterització dels esdeveniments climàtics ocorreguts durant períodes glacials i interglacials 

    El Ouahabi El Ghazi, Anuar (Date of defense: 2017-09-06)

    Arribar a comprendre les causes i efectes dels canvis globals i les interaccions sinèrgiques del sistema climàtic continua sent un repte científic complex. Els informes del Panell Intergovernamental sobre el Canvi Climàtic ...

    Estudi de plastificants en mostres d’aigua i begudes 

    Bolívar i Subirats, Gabino (Date of defense: 2015-11-05)

    Els plastificants són additius o monòmers dels plàstics que s'empren durant la fabricació d'aquests per modificar propietats fisicoquímiques. Poden arribar al medi ambient a partir de focus industrials, ja que són produïts ...

    Estudio de emulsiones altamente concentradas de tipo W/O: relación entre tamaño de gota y propiedades 

    Lendínez Gris, Mª Carmen (Date of defense: 2015-06-08)

    Las emulsiones son dispersiones de dos líquidos inmiscibles que, generalmente están estabilizadas por moléculas tensioactivas. Cuando la fracción en volumen de fase dispersa es superior o igual a 0,74 (valor que corresponde ...

    Estudio de la tostación de los seleniuros de plata (Ag2Se), de cobre (I) (Cu2Se) y de plata y cobre (AgCuSe), en atmósfera de aire 

    Segarra Rubí, Mercè (Date of defense: 1994-01-01)

    Los lodos anódicos del afino electrolítico del cobre contienen grandes cantidades de selenio, la mayor parte del cual se encuentra presente en forma de seleniuros de plata y cobre. Para recuperar la plata, el cobre y el ...

    Evaluación del impacto ambiental asociado al uso de nuevos retardantes de llama 

    Barón González, Enrique (Date of defense: 2015-11-16)

    Los retardantes de llama halogenados (HFRs) se aplican a una gran variedad de materiales, como muebles, textiles, material electrónico, etc., con el objetivo de prevenir los incendios. La demanda global se incrementa año ...

    Evaluation of biotoxins in marine ecosystems by new analytical and biological strategies 

    Bosch Orea, Cristina (Date of defense: 2021-01-29)

    In this thesis is presented the development of different analytical methodologies for the analysis of marine biotoxins in seawater. The objectives were the development of the methods and the application to study the biotoxins ...

    Exploring protein structure changes due to somatic mutations in cancer 

    Diéguez Docampo, Andrea (Date of defense: 2023-03-02)

    [eng] Cancer is one of the most common diseases worldwide. Despite that a lot of time and resources have already been spent in this topic, there is still a long way to go to be able to cure every patient and improve their ...

    First principles evaluation of structure and properties of multifunctional materials 

    Santiago Piera, Raul (Date of defense: 2024-02-16)

    [eng] Organic chemistry is recognized for its ability to arrange a limited set of atoms in numerous ways, a quality that is crucial in molecular magnetism. This branch benefits from the adaptability of organic chemistry ...

    Forefront cold spray additive manufacturing development by leveraging new spraying strategies 

    Vaz, Rodolpho Fernando (Date of defense: 2023-10-27)

    [eng] Additive manufacturing (AM) is a process of creating a physical object by adding material layer by layer rather than removing material through machining. It is also known as 3D printing, as it typically involves using ...

    Formación y caracterización de emulsiones altamente concentradas de betún en agua 

    Martínez Rodríguez, María (Date of defense: 2014-07-10)

    El objetivo principal de la presente tesis ha sido la preparación y caracterización de emulsiones bituminosas concentradas y altamente concentradas de betún en agua controlando el tamaño de gota. Las investigaciones y ...

    Formación y propiedades de espumas macroporosas de quitosano obtenidas a partir de emulsiones altamente concentradas 

    Miras Hernández, Jonatan (Date of defense: 2015-04-16)

    El principal objetivo de la presente tesis es la obtención de espumas de quitosano mediante la utilización de emulsiones altamente concentradas de tipo aceite en agua (O/W). Para alcanzar dicho objetivo, este trabajo ha ...

    From Romanesque to Gothic: A compositional, morphological and formal study of medieval cultural heritage objects 

    Magkanas, Georgios (Date of defense: 2023-09-18)

    [eng] The present PhD thesis is focused on the study of the compositional, morphological and formal characteristics of medieval cultural heritage objects, and more specifically manuscripts and champlevé enamels of Limoges, ...

    Identification and Fate of Known and Unknown Transformation Products of Pharmaceuticals in the Aquatic System 

    Žonja, Božo (Date of defense: 2017-02-01)

    Pharmaceuticals which are used worldwide are designed to facilitate the life for the human society and have an important role in treatment and prevention of disease for both humans and animals. They are ubiquitous in the ...

    Indole arylation in tryptophan residues: development of new chemical methodologies, synthetic studies and biological evaluation of modified peptides 

    Mendive Tapia, Lorena (Date of defense: 2017-02-17)

    In the present thesis we have investigated the development of new methodologies for the selective and straightforward chemical modification of Trp amino acid either alone or in peptides. In the first chapter, we have ...

    Information Transfer and Dynamics of Nucleic Acids studied by Theoretical Approaches 

    Balaceanu, Alexandra (Date of defense: 2018-12-12)

    1. The Force Field Accuracy Problem. The utility and applicability of MD simulations to model biomolecular systems goes only as far as its ability to sufficiently sample the conformational space and the correct description ...

    An integrated assessment of nanoparticle exposures in the ceramic industry 

    Salmatonidis, Apostolos (Date of defense: 2019-09-30)

    Exposure to nanoparticles has been associated with adverse effects on human health. When the exposure route is inhalation, nanoparticles can cause pulmonary inflammation which may be more severe than from fine particles, ...

    L'alcohol terc-butílic com a solvent d'interés analític: equilibris protolítics i les seves aplicacions 

    Rosés Pascual, Martí (Date of defense: 1986-05-23)

    L’objecte primordial del present treball ha estat l’estudi teòric i pràctic d’un solvent, l’alcohol terc-butílic, que tot i essent un dels solvents més semblants a l’aigua, presenta respecte a ella notables diferències. ...