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Now showing items 37971-37990 of 41898
Supramolecular Strategies to Control the Assembly of Organic-Based Materials
The focus of this thesis is the use of supramolecular chemistry to functionalize polymers to obtain organic-based materials with a control of their structure and properties. The non-covalent functionalization of polymers ...
Supramolecular studies on the behaviour of different chiral cycloalkane-based compounds as receptors, gelators and surfactants
En aquesta tesi, s’han estudiat quatre diferent sistemes supramoleculars com a receptors, gelificadors o tensioactius. S’ha analitzat la influència de diferents factors estructurals de la molècula senzilla en la seva ...
Supramolecular, photophysical and catalytic properties of zn(salphen) based complexes and materials
Los Salen [N, N'-bis(salicilideno)etilendiamina] son ligandos tetradentados lineales, sistemas N2O2-coordinados, que se obtienen de la reacción de condensación entre la diamina y los precursores(sustituidos)del salicilaldehído. ...
Surface and Deep Circulation off South Africa: Agulhas Leakage Influence on the Meridional Overturning Circulation During the Last 345 kyr
Investigaciones paleocenográficas y simulaciones numéricas están mostrando que el Hemisferio Sur desempeña un papel importante, tanto en los cambios de la circulación global como en la definición del estado climático ...
Surface characterization and cell instructive properties of superficially modified dental zirconia
Tetragonal polycrystalline zirconia doped with 3 mol% yttria (3Y-TZP) has become one of the most popular dental ceramics. Thanks to its outstanding mechanical properties (including high hardness. Toughness and wear ...
The surface chemistry of metal fluoride nanocrystals
Primerament, la síntesis de quinze tipus de nanocristalls inorgànics i la tendència general dels nanocristalls de fluorurs metàl·lics ha estat satisfactòriament desentranyada. Utilitzant el mètode de la coprecipitació, es ...
Surface chemistry of molecules of astrophysical interest: theory and simulations
En aquesta tesi he investigat alguns dels punts crítics cap a la formació d’iCOMs en la pols gelada interestel.lar. Concretament, he abordat el problema de la síntesi d’iCOMs en les superfícies dels grans de pols interestel.lar ...
Surface functionalization of cellulosic substrates by using chemical and biotechnological methods
This thesis deals with the surface modification of cellulosic substrates by use of chemo-enzymatic methods. Functionalizing cellulose is intended to adjust its properties for various purposes, but particularly for obtaining ...
Surface modification of Polymers by plasma polymerization techniques for tissue engineering
El treball que es presenta en aquesta tesi pretén contribuir al camp de la ciència de superfícies biològiques, amb el desenvolupament de superfícies adaptades amb cadenes lateral reactives per tal de unir covalentment ...
Surface modification of zirconia-based bioceramics for orthopedic and dental applications
Debido a sus excelentes propiedades mecánicas y una excelente biocompatibilidad, el uso de las cerámicas de base de circona en aplicaciones dentales y ortopédicas ha crecido rápidamente durante las últimas décadas. Sin ...
Surface nano-structured materials to control bacterial contamination
The spread of bacteria and infections, initially associated with an increased number of hospital-acquired infections, has now extended into the community causing severe and difficult to treat diseases. Additionally, many ...
Surface passivation of crystalline silicon by amorphous silicon carbide films for photovoltaic applications
En aquesta tesi s'estudia la passivació del silici cristal·lí per a la producció de cèl·lules solars d'alta eficiència (> 20%) a baix preu.<br/>Actualment la indústria fotovoltaica empra capes de nitrur de silici crescut ...
Surface plasmon resonance as a tool in the functional analysis of an immunodominant site in foot-and-mouth disease virus
A fast and direct surface plasmon resonance (SPR) method for the kinetic analysis of the interactions between peptide antigens and immobilised monoclonal antibodies (mAb) has been established. Protocols have been developed ...
Surface Properties of Hard Fluorinated Amorphous Carbon Films Deposited by Pulsed-DC Discharges
New Generation Lithographic (NGL) techniques have been recently investigated in order to overcome the limitations of the long-used UV lithography. Several techniques have been proposed during the last decades, but the ...
Surface reconstruction for multi-view video
This thesis introduces a methodology for obtaining an alternative representation of video sequences captured by calibrated multi-camera systems in controlled environments with known scene background. This representation ...
Surface reconstruction methods for seafloor modelling
Underwater maps are an important source of information for the scientific community, since mapping the seafloor is the starting point for underwater exploration. The advance of range scanning methodologies (both acoustic ...
Surface stability and small-scale testing of zirconia
Tetragonal polycrystalline zirconia stabilized with 3 mol% of yttria (3Y-TZP) is a biocompatible ceramic showing superior mechanical properties, which are partly the consequence of phase transformation: the tetragonal ...
Surface state assisted charge transfer and recombination processes at the semiconductor/electrolyte interface
La necesidad urgente de adoptar las medidas necesarias para limitar el aumento de la temperatura global del planeta a un máximo de 1.5ºC fue enfatizada durante la Cumbre de Paris contra el cambio climático celebrada a ...
Surface structuration of metal-organic frameworks using tip-based lithographies
La presente Tesis Doctoral se ha dedicado al estudio, desarrollo e implementación de métodos para la síntesis y micro- nanoestructuración de materiales metal-orgánicos porosos (MOFs, Metal-Organic Frameworks) sobre ...
Surface-functionalized and hybrid nanocatalysts for water splitting
“Una alternativa per aconseguir una font d’energia lliure en carboni és la fotoproducció d’H2 mitjançant el trencament catalític de l’aigua (water splitting, WS, Eq. 1) fent servir la llum solar. 2H2O + hv --> 2H2 + O2 ...
