Now showing items 43-62 of 141

    Design and synthesis of short antimicrobial peptides for plant protection. Study of their mode of action 

    Ferre Malagon, Rafael (Date of defense: 2010-07-23)

    Aquesta tesi doctoral està basada en el desenvolupament de nous agents antimicrobians derivats del pèptid híbrid cecropina A-melitina WKLFKKILKVL-NH2 (Pep3) que siguin sostenibles i útils per al control de malalties de ...

    Design, preparation and characterization of polymer inclusion membranes as an emerging technique for preconcentration and speciation measurements 

    Vera Chamorro, Ruben (Date of defense: 2019-03-15)

    Water is essential for humankind not only for its direct consumption but also for its multiple applications in industry or agriculture, among others. The presence of undesirable substances or pollutants directly affects ...

    Detecció de compostos volàtils, clorofenols, cloroanisoles i 2,4,6-tribromoanisole, relacionats amb el "gust del suro" 

    Insa Aguilar, Sara (Date of defense: 2006-05-22)

    D'entre els defectes organolèptics associats al vi, en destaca l'anomenat "gust de suro" habitualment vinculat a la presència de cloroanisoles, els quals són productes de l'activitat microbiana formats a partir dels ...

    Development and application of new methodologies for chemical bonding analysis 

    Gimferrer Andrés, Martí (Date of defense: 2023-03-27)

    In the last decades, electronic structure methods have been crucial for chemists to achieve deeper insight into chemistry itself and to make predictions before performing the actual experiments. The development of computational ...

    Development of analytical methodologies for the assessment of odorous and fragrance compounds in wastewater treatment plants 

    Godayol Boix, Anna (Date of defense: 2014-03-27)

    Different analytical methodologies have been developed for the determination of odorous compounds and synthetic fragrances in water and air WWTP samples from Girona and Tarragona provinces. With regards to the odorous ...

    Development of analytical methodologies for the determination of emerging contaminants and phosphorus compounds 

    Valls Cantenys, Carme (Date of defense: 2014-11-21)

    The presence of anthropogenic chemical substances in water resources can affect the ecological balance of aquatic systems, as well as human health, and therefore it is necessary to control their presence in water bodies. ...

    Development of chemical separation processes for the treatment and monitoring of metallic cations and oxoanions in polluted waters 

    Güell Martí, Raquel (Date of defense: 2011-10-07)

    The chemical contamination of natural waters is a global problem with a worldwide impact. Considering the relevance of this problem, this thesis is intended, on one hand, to develop different separation/preconcentration ...

    Development of flexible cavitand receptors based on calix[5]arene. Rational design, synthesis and study of their properties 

    Álvarez Yebra, Rubén (Date of defense: 2023-11-07)

    Cavitands are macromolecules with a permanent cavity where smaller molecules or ions can be accommodated. The hydrophobic cavity of these supramolecules allows the binding of other molecules though non-covalent interactions, ...

    Development of new reusable materials based on Ru complexes with catalytic activity for olefin epoxidation and nitrile hydration 

    Ferrer Vall-llosada, Íngrid (Date of defense: 2015-07-16)

    In this thesis we present the synthesis and characterization of different types of ruthenium complexes containing N-donor ligands together with dmso, Cl and H2O ligands, along with their complete characterization through ...

    Development of new solvent-free microextraction techniques for the analysis of volatile organic compounds: application to the use of breath analysis as a toxicological tool for explosure analysis 

    Alonso Roura, Mònica (Date of defense: 2012-12-14)

    Hippocrates predicted many years ago that breath could tell something related with our health. On his treaties, he indicated that when the body starts moving after sleeping, and breathe with more frequency, something hot ...

    Development of new transition metal complexes for their use in sustainable catalytic processes and as antitumoral agents 

    Manrique Salas, Ester (Date of defense: 2018-10-22)

    In this thesis we present the synthesis and characterization of different types of ruthenium complexes containing N-donor ligands together with monodentate ligands, along with their complete characterization through s ...

    Development of structurally and electronally versatile aminopyridine cobalt complexes for photo-(electro) reduction of water and ketones 

    Call Quintana, Arnau (Date of defense: 2016-12-13)

    The increasing need for more efficient synthetic methods and sustainable processes for fuel and high-value organic molecules production can be seen as one of the major challenging goals for the future. Nature has developed ...

    Disseny i síntesi de lipopèptids cíclics i de pèptids conjugats derivats de BPC194 amb activitat antimicrobiana 

    Vilà Roura, Sílvia (Date of defense: 2014-07-28)

    Les malalties causades per bacteris i fongs són responsables d’importants pèrdues econòmiques en cultius. Es considera que els pèptids antimicrobians, naturals i sintètics, són uns bons candidats per a ser utilitzats com ...

    Efecto de la aplicación de altas presiones hidrostáticas en un producto de origen animal, el jamón curado y en un producto vegetal, el nabo 

    Clariana Orduña, Maria (Date of defense: 2011-12-16)

    High pressure processing is a food preservation technique which can be an alternative to heat treatment. Pressurization, in theory, produces changes in organoleptic properties and antioxidant compounds to a lesser extent. ...

    Electronic structure, chemical bonding, and electronic delocalization of organic and inorganic systems with three-dimensional or excited state aromaticity 

    El Bakouri El Farri, Ouissam (Date of defense: 2017-11-22)

    Aromaticity is a key concept in chemistry, used by chemists to explain the structure, stability, and reactivity of many compounds. Aromatic compounds are present in industrial processes as well as in living systems. ...

    Elucidating the role of conformational dynamics of Aspergillus niger Monoamine oxidase towards enzymatic chiral amines synthesis 

    Curado Carballada, Christian (Date of defense: 2023-03-13)

    Enzymes have evolved through years until becoming great catalysts that present high selectivity, specificity, and activity. Initially, enzymes were understood as static (bio)molecular structures capable of accelerating ...

    Enzymatic and bioinspired iron oxidation chemistry: a computational study 

    D'Amore, Lorenzo (Date of defense: 2021-12-10)

    The oxidative activation of C(sp3)–H bonds under ambient conditions represents a challenge to modern chemistry, nevertheless it is commonly operated in Nature by various oxygenases in key metabolic transformation and ...

    Estructura computacional i aplicacions de la semblança molecular quàntica 

    Amat Barnés, Lluís (Date of defense: 2003-06-02)

    La tesis tracta diferents aspectes relacionats amb el càlcul de la semblança quàntica, així com la seva aplicació en la racionalització i predicció de l'activitat de fàrmacs. Es poden destacar dos progressos importants en ...

    Estudi de la complexació dels ions Fe3+ i Al3+ per fosfats i lligands orgànics carboxílics : aplicació a la caracterització química d'aigües per a tractaments industrials i agrícoles 

    Escoda i Acero, Ma. Lluïsa (Date of defense: 1997-07-14)

    La memòria consisteix en l'estudi de la complexació del Fe3+ i de l'AI3+ per fosfats i lligands orgànics carboxílics (PBTC) en un medi iònic 0.5 M en NaNO3 i una posterior aplicació dels resultats obtinguda a la caracterització ...

    Estudi de la mobilitat i biodisponibilitat de pol·luents en la zona minera del camp de Cartagena 

    Sánchez i Bassols, Marta (Date of defense: 2008-12-12)

    Gran part del districte miner Cartagena-La Unión es troba ocupat per residus provinents d'activitats mineres actualment abandonades. Aquestes activitats, desenvolupades històricament en les muntanyes situades en la costa ...