Now showing items 57-76 of 101

    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. ...

    Liberación de partículas atmosféricas en escenarios industriales reales y su impacto en la exposición humana y ambiental. Casos de estudio: actividades portuarias y reciclaje de residuos electrónicos 

    López Olivé, Maria (Date of defense: 2023-09-15)

    [spa] Los estudios sobre exposición a nanopartículas (NP) en aerosoles atmosféricos son cada vez más importantes para comprender sus efectos en la salud humana y el medio ambiente, ya que las NP pueden penetrar profundamente ...

    Localized hypermutation and hypomutation in the genomes of human somatic cells 

    Mas-Ponte, David (Date of defense: 2022-11-14)

    [eng] Somatic cells accumulate mutations in their genome from a set of exogenous and endogenous processes. The interplay of DNA lesions and the DNA repair mechanisms in each cell shape the genetic mosaicism that composes ...

    Mecanismo cinético de la xantinoxidasa de hígado de buey y de la xantindeshidrogenasa de hígado de pollo 

    Canela Campos, Enric I. (Date of defense: 1976-12-16)

    La xantinoxidasa (xantina: oxígeno-oxidorreductasa) fue descubierta por HORBACZEWSKI y SPITZER al observar que la hipoxantina y la xantina, en presencia de varios preparados tisulares, daban lugar a la aparición de ácido ...

    Modulation of the RNAi pathway by chemically modified siRNA molecules 

    Alagia, Adele (Date of defense: 2015-12-11)

    To direct post-transcriptionally gene silencing, RNAi machinery exploits the formation of base pairs between the loaded guide strand and the complementary mRNA. The Ago2 protein is the “slicer” effector of the RISC and ...

    Multiscale modelling of CO2 hydrogenation reactions on Ni-based catalysts 

    Lozano Reis, Pablo (Date of defense: 2023-11-10)

    [eng] Global warming and climate change, mostly due to the increasing concentration of greenhouse gases in the atmosphere, are producing devastating effects. Among the different greenhouse gases, CO2 is one of the major ...

    MXene Materials for CO(2) Capture and Transformation 

    Jurado Mañas, Anabel (Date of defense: 2023-06-21)

    [eng] MXene materials, the low-dimensional counterpart of transition metal carbides and nitrides present suitable properties as catalysts in heterogeneous catalysis given the similar properties with transition metal carbides ...

    Nanostructured transition metal carbides as potential catalysts for greenhouse gases conversion 

    Figueras Valls, Marc (Date of defense: 2021-12-14)

    Over the recent decades, several studies revealed the precarious climate situation which is threatening all Life forms on earth, including mankind, even if sometimes we tend to ignore the actual fragility of our situation. ...

    Non-coding genome functions in cancer 

    Subirana Granés, Marc (Date of defense: 2023-11-17)

    [eng] Historically, cancer genomics has predominantly focused on coding regions. Current knowledge suggests that non-coding mutations are likely crucial in driving the mechanisms that regulate gene activity, potentially ...

    Non-glycosidic analogues of alpha-galactosylceramide: Design, synthesis and biological activity 

    Borràs Tudurí, Roser (Date of defense: 2018-07-06)

    The Immune System (IS) is a complex collection of tissues, organs, cells and molecules to defense the body against threatens. IS is organized into two lines of defense: innate immunity which acts in a non-specific manner ...

    Novel Disulfide Formation Strategies in Peptide Synthesis 

    Postma, Tobias Maria (Date of defense: 2014-03-21)

    Cysteine (Cys) is a unique amino acid due to its ability to form reversible covalent disulfide bonds. These bonds cause conformational constraints which make peptides or proteins more rigid and stable. In addition, the ...

    Occurrence and distribution of organochlorinated pesticides and flame retardants in Spain and China 

    Zapata Corella, Pablo (Date of defense: 2022-09-19)

    In the present thesis, analytical methods based on gas chromatography coupled with mass spectrometry, both single (GC-MS) or tandem (GC-MS/MS), have been developed and optimized for the detection and quantification of ...

    Organic pollutants in indoor dust: method development, site-specific monitoring and human exposure 

    Velázquez Gómez, Miquel (Date of defense: 2019-10-21)

    Dust has been used as a surrogate of indoor organic contamination for several decades. Their concerns for human health include from sensitization effects such as allergies to toxic effects derived from those organic ...

    Origin and release of cyanotoxins in surface water reservoirs 

    Filatova, Daria (Date of defense: 2021-07-20)

    Cyanobacteria are prokaryotes and components of regular periphyton formation. Overall, there are around 2000 cyanobacterial species that live in various environments. Some cyanobacterial species are known to form blooms, ...

    Passive air and water sampling in high-altitude lakes: occurrence and distribution of legacy and emerging organic pollutants 

    Martínez Prats, Raimon (Date of defense: 2022-11-17)

    [eng] Remote high mountains allow the study of the environmental fate of legacy and emerging anthropogenic chemicals that form a worldwide diffuse background layer of pollution. Semi- volatile compounds like polychlorinated ...

    Pesticides in the environment: analysis, occurrence, impact and recommendations for their attenuation 

    Barbieri, Maria Vittoria (Date of defense: 2021-01-28)

    The assessment of pesticide occurrence in different environmental compartments has become a matter of outstanding importance since its effects on exposed organisms may be considered a warning on the potential risk these ...