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Now showing items 20753-20772 of 41815
Hydrolysates and peptides from chicken foot proteins to manage hypertension
La hipertensió arterial es considera un dels problemes de salut pública més importants en la nostra societat. El tractament d’aquesta patologia es basa en una combinació de canvis en l’estil de vida i tractament farmacològic. ...
Hydrolysis of the trifluoromethyl group in triarylphosphines: scope of the reaction in the preparation of carboxylic-trifluoromethylated phosphines and their applications
La present tesi descriu la preparació d’una nova família de fosfines carboxíliques-trifluorometilades. Aquests lligands han sigut sintetitzats mitjançant la reacció d’hidròlisi del grup trifluorometil en triarilfosfines ...
Hydrometeorological and climatic control over lake phytoplankton: the importance of time scales
In the present thesis we focus on the two extremes of the wind speed – storms and atmospheric stilling – and analyse their impacts on lake environments and phytoplankton dynamics over short and long periods. As we realised ...
Hydropower and ecological conflicts. From resistance to transformations
El sector hidroeléctrico está pasando por una fase de expansión a nivel global, siendo promovido como una fuente de energía sostenible y renovable. Sin embargo, la construción de represas está causando un creciente número ...
Hydrotalcite-like compounds for the valorisation of renewable feedstocks
Como consecuencia de una demanda energética creciente, en los últimos años se ha incrementado la producción de biodiesel generándose un exceso de producción de glicerol y provocando que su precio disminuya considerablemente. ...
Hydroxyapatite-based materials for smart antitumor drug delivery systems, endocytic pathways and endosomal trafficking : polymers and biopolymers
Development of new drug molecule is expensive and time consuming. Improving safety efficacy ratio of “old” drugs has been attempted using different methods such as individualizing drug therapy, dose titration, and therapeutic ...
Hydroxypropyl Cellulose as Enabling Material for the Nanofabrication of Photonic Architectures
La creixent preocupació per l’impacte mediambiental i la sostenibilitat de les activitats humanes ha comportat un renovat interès per l’ús de materials d’origen natural. En aquest marc, la cel·lulosa, el polímer més abundant ...
Hygroscopic properties of single bacterial cells and endospores studied by Electrostatic Force Microscopy
The large abundance of bacterial growth niches provide a rich diversity of bacterial traits. These are usually characterized using traditional microbiology research tools, and newer characterization techniques (which focus ...
Hygrothermal effects on CFRP: testing, analysis and structural optimization
In the common design and certification process, a large number of experimental tests, going from small specimens to the full structure, are performed. In these tests, the environmental conditions, especially temperature ...
Hyperactivation of the TGF-β signaling pathway in glioblastoma: mechanisms and consequences
The TGF-β pathway is currently considered a therapeutic target in advanced tumors, including glioblastoma (GBM), and several anti-TGFβ agents are in clinical trials and have shown promising results .A thorough understanding ...
Hyperbranched poly(ethyleneimine) derivatives as modifiers in epoxy networks
A la tesis que es presenta s’ha dut a terme la modificació química d’una poli(etilenimina) hiperramificada (PEI) comercial per a obtenir diferents estructures dendrítiques, que s’han estudiat posteriorment com a modificants ...
Hyperbranched polymers and other highly branched topologies in the modification of thermally and uv cured expoxy resins
RESUM Les reïnes epoxi constitueixen un dels polímers més emprats en el món de la industria, si bé presenten una sèrie d’inconvenients, els més importants dels quals són: la seva inherent fragilitat, la seva excessiva ...
Hyperspectral image representation and processing with binary partition trees
The optimal exploitation of the information provided by hyperspectral images requires the development of advanced image processing tools. Therefore, under the title Hyperspectral image representation and Processing with ...
Hyperspectral imaging application to deoxynivalenol management in wheat
Les micotoxines són metabòlits secundaris fúngics causants de malalties en humans i animals i de reduccions del rendiment econòmic en la producció de cereals. La indústria i els proveïdors demanden noves tecnologies per ...
Hyperspectral imaging system for the fast recording of the ocular fundus
Vision loss affects physical, psychological, and emotional wellbeing and social life as well. High life expectancy and health policies are translated into an aging population worldwide, which has higher risk of eye’s ...
Hypervalent Iodine as Directing Tool in Iodine-Retentive Transformation of C-H Bonds
La química del iode hipervalente és una potent i versàtil eina en síntesi orgànica. En particular, els compostos orgànics de iode (III) s'han utilitzat com a oxidants de 2 electrons, així com agents de transferència de ...
Hypnosis versus Anesthesia: a study with children undergoing Magnetic Resonance Imaging procedures
Fons: Malgrat l'eficàcia reconeguda de la hipnosi en el camp de l'anestèsia, s'han publicat pocs estudis sobre el seu ús en l’entorn pediatric de la Imatge per Ressonància Magnètica (IRM). Aquesta mancança es pot explicar ...
Hypothalamic Ceramide Levels regulated by CPT1C mediate the Orexigenic effect of Ghrelin
Recent data suggest that ghrelin exerts its orexigenic action through regulation of hypothalamic AMP-activated protein kinase pathway, leading to a decline in malonyl-CoA levels and desinhibition of carnitine palmitoyltransferase ...
Hysteresis and Capacitive Features of Perovskite Solar Cells
In the present work, anomalous distortions occurring in the current-voltage characteristic of perovskite solar cells (PSCs), usually called J-V curve hysteresis, are studied by several methods. This includes dynamic ...
Hysteresis Control in Hybrid Perovskite-based Devices for Photovoltaic and Neuromorphic Computing Applications
Perovskite solar cells have been rapidly advancing in record efficiencies at an unprecedented rate already approaching the theoretical maximum efficiency in just over a decade of development. Most notably, perovskites ...
