Dissertations / Theses on the topic 'Vins de base'
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Marchal, Richard. "Contribution a l'etude des proprietes moussantes des vins de champagne. Etude quantitative et qualitative des proteines des mouts et des vins de base champenois." Reims, 1995. http://www.theses.fr/1995REIMS003.
Full textMaxe, Charlotte. "Impact d’un élevage en fût de chêne sur les caractéristiques physico-chimiques et organoleptiques des vins de base champenois." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK026.
Full textThe environmental characteristics of oak wood (geographical origin and species), as well as the cooperage practices, can affect the physico-chemical and molecular properties of barrels, and consequently the wines vinified and aged in them. This impact of wood ageing on champagne base wines has hardly ever been studied to date, whereas this practice has been implemented for several years by some Champagne houses. However, the characteristics of these base wines (acidity, alcohol content) as well as the will to avoid woody aroma like for still wines, require further scientific knowledge on the mechanisms that can contribute, for example, to improve the oxidative stability and the organoleptic complexity of these wines. This thesis project is aimed at characterizing the physico-chemical and sensory impacts of barrel vinification and barrel ageing on champagne base wines, by specifically selecting woods originating from Champagne forests. Different physic-chemical analytical approaches (antioxidant capacity, oenological parameters…), molecular approaches (ellagitannins, metabolome) and sensory approaches will be implemented in model systems and in real conditions of wine ageing in order to develop tools for adapting wood ageing to base wines. Particular attention will be paid to the characterization of discriminant molecular fractions of species and geographical origins of woods from Champagne forests to give a local ecosystem dimension to this project
Liu, Pinhe. "Impacts de la maturité du raisin et du fractionnement au pressage des jus sur la composition des moûts et des vins blancs - Relation avec les propriétés moussantes des vins de base de Champagne." Thesis, Reims, 2018. http://www.theses.fr/2018REIMS045/document.
Full textFoam is a major sensory characteristic of sparkling wines. As part of better controlling the foaming properties of Champagne wines, the goal of this work is to better understand the impact of grape maturity and press fractioning on the composition of grape juices and base wines, especially on the proteins, and their relationships with wines’ foamability.During the maturation of healthy grapes (Chardonnay and Pinot Noir of two vintages), the oenological characteristics of musts evolve in a TAP range from 4% to 11% vol. An increase in protein content was also showed during the ripening of grape berries. In addition, for the grapes harvested at ‘industrial maturity’, essential changes in the biochemical composition of musts were observed with a TAP between 8% and 11% vol.The study of grape maturity that performed on Chardonnay and Pinot Meunier grapes of three vintages, showed that riper and healthy grapes could give their corresponding base wines with higher total protein contents, and better foamability than those wines made from less ripen grapes. Statistical analyses showed significant positive correlations between different oenological characteristics of musts and base wines and, for the first time, a correlation between foamability and protein content of wines, in relation to grape maturity, has been shown. Except for the grape maturity, the protein content and the foamability of Champagne base wines could be strongly influenced, in the concept of ‘Terroir’, by the pair grape variety/vineyard and the climate of the vintage.The study of the press fractioning of grape juices, carried out on Chardonnay, Pinot Noir, Pinot Meunier of five vintages, showed a general evolution of the characteristics in musts and wines, during the pressing cycle that realized on industrial and laboratory scale. The composition of musts and their corresponding wines could be strongly influenced by the variability of vineyards, grape maturity, vintage and the health condition of grapes, but hardly affected by the scale and the type of press. Those sources of variability could lead to differences in protein content and foaming properties for Champagne base wines
Saidane, Dorra. "Mise au point d’un procédé de réduction du pouvoir de combinaison des vins à base de biopolymères issus de la biomasse." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14455/document.
Full textThe objective of this study is the reduction of the power of sweet white wines sulfur dioxide combination. The method used relies on the extraction of carbonyl compounds from wine; these are naturally present and responsible for the formation of bisulfite combinations.The carbonyl compounds responsible for most of the trapping of sulfur dioxide are acetaldehyde, pyruvic acid and the 2-oxoglutaric. The extraction of these compounds should be done without altering the organoleptic qualities of wine and without creating the appearance of new molecules in wine. Therefore, the method we used was the liquid-solid extraction: bringing together two reactants, one of which -the extracting agent- is attached to an insoluble support.Our goal is to study the possibility of substituting the industrial polymers, used so far, by natural origin supports, prepared from a wood constituent: the lignin.The use of natural origin materials, deriving from wood, has the double advantage of allowing a better control of materials, introduced in the wine process, and making more acceptable the possible contaminations broad about by the a priori treatment, as they are compounds already present in the wood cooperage
Couillaud, Samuel. "Synthèse, structure, propriétés physiques et réactivité vis-à-vis de l’hydrogène de nouveaux composés ternaires à base de magnésium." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14288/document.
Full textNowadays, the decrease of fossil fuel resources, and the increase of energy requirements and concentration of greenhouse gases in the atmosphere induces the development of new energies. The use of hydrogen as energetic vector is a solution. Indeed, it is abundant and its combustion is highly energetic (3 times more than petrol). However, its utilisation is limited by problems of production, storage and use. In this work, we have focused on the problem of solid hydrogen storage. It allows for high volumetric capacity (≈ 140 g/L) but is restricted by low weight capacity and by slow sorption kinetics. Because magnesium is potentially a good candidate according to its high weight capacity (7.6 %wt), we have chosen to work on the ternary compounds RE-M-Mg (RE = Rare earth, M = transition metal). The goal was double: to keep the good capacity of the magnesium and to decrease the enthalpy of formation of the hydride. The RE4NiMg system (with RE = Y and Gd) and the derived solid solutions were studied. An irreversible hydrogen uptake of 2.5% wt and a magnetic properties change from antiferromagnetic to spin glass behaviour were observed.A more exploratory work allowed us to discover two new magnesium rich compounds: LaCuMg8 and Gd13Ni9.5Mg77.5. Both lead to a phase mixture induced by their decomposition during the first absorption. This mixture allows a very significant improvement of the hydrogen sorption properties of magnesium
Nicolay, Alexis. "Microstructure et propriétés de l'Inconel 718 DA forgé en presse à vis dans le domaine subsolvus δ." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM067.
Full textDue to their desirable properties at high temperature, polycrystalline nickel-based superalloys are widely used for aircraft engine turbine disk manufacturing. Among the nickel-based superalloys family, Inconel 718 is currently the most popular for civil aircraft engine disks. Such parts are obtained by a hot forging process. Microstructural evolutions occurring during this process are very sensitive to forging conditions (temperature, strain rate and strain level). Given that the microstructure and subsequent mechanical properties are strongly coupled, it is of utmost importance to establish the influence of forging conditions on microstructural evolutions. This relationship, once provided, makes it possible to control the final microstructure of industrial parts, and so their mechanical properties. This work deals with the screw press forging of Inconel 718, a process characterized by relatively high strain rates (1s-1 to 100s-1). In particular, this project aims at studying this kind of forging process compared to conventional forging performed at relatively lower strain rates (0.001s-1 to 0.1s-1). Microstructural evolution mechanisms and kinetics are relatively well known for these conventional methods, and so, the mechanical properties of forged components are controlled. The purpose of this current PhD thesis is to investigate the links that exist between the forging mode (i.e. the strain rate), the resulting microstructures, and, the mechanical properties they generate. Hot compression tests simulating forging operations have been performed. Accurate characterizations of microstructures produced during these compression tests have allowed the finding of the strain rate’s influence on microstructural evolutions. In particular, recrystallization kinetics differing from those reported in the literature have been elucidated. Tensile and creep properties were also evaluated on specimens taken from industrial forged parts. Accurate microstructural characterizations performed in these samples have led to discovering relationships between microstructural features and mechanical properties, and subsequently, have clarified connections to the forging mode
Bou, Nader Khalil. "Grapevine age : Impact on physiology and berry and wine quality." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0329/document.
Full textVine age and its relation to the quality of the wine are topics of recurring interest, both scientific and economic. Consumers and actors in the wine sector seem to agree on the ability of old vines to produce wines of superior character. Despite ongoing research, the validity of this point of view remains debated and questions about the mechanisms through which old vines would end up with superior quality wines remain numerous. To try to answer them, the impact vine age on physiology, tolerance to water stress, and berry and wine quality were studied in an experimental vineyard planted with Vitis vinifera L. cv. of identical genetic material (Riesling Gm 239 grafted on 5C Teleki) but planted in different years.In 2014 and 2015, the vines planted in 2012 had not yet reached their full potential and had a significantly lower vegetative productivity and yield than the vines planted in 1995 and 1971. Moreover, the vines planted in 2012 were not subjected to the same grass treatment as older vines during this period to prevent excessive competition during establishment. The lower capacity of these vines and the absence of cover crop led to greater exposure of clusters to light and greater nitrogen accumulation, which resulted in a higher concentration of amino acids, monoterpenes, norisoprenoids, and flavonols in 2014 and 2015. In the following years (2016 and 2017), the yield and pruning weight of these vines, as well as their berry composition, were comparable to those of the older vines. The parameters of technological maturity (° Brix, total acidity and must pH) were not significantly affected by vine age.Vines planted in 1995 and 1971 showed similar physiological characteristics throughout the study with the exception of a higher incidence of esca syndrome in the older group. This disease was responsible for the decline in the total yield of vines planted in 1971, but individual yield per vine was equivalent for both groups.Sensory and chemical analyzes were conducted in 2017 on wines from previous vintages. The wines of the youngest vines were associated with aromas of ripe fruit and the kerosene aroma that is typical of Riesling. These wines were also identified by higher concentrations of potential monoterpenes and norisoprenoids and volatile sulfur compounds in 2014 and 2015 only. The sensory and chemical profiles of wines from vineyards planted in 1995 and 1971 were dependent on the vintage but not on the age of the vines. The wine profiles produced in 2016 were overlapping for the three age groups.The works described in this thesis manuscript are unique, particularly because the vineyard in which they were conducted was designed specifically to study the effect of the age of the vine under comparable environmental conditions. Once the youngest vines reached their fruiting potential and were conducted in the same way as the older vines, their productivity, the composition of their berries and the quality of the wines they produce converged with those of the two other groups. More interestingly, vines aged 19 and 43 years behaved similarly throughout the study and resulted in wines comparable in terms of sensory analysis, which goes against the an idea that the older vines produce wines of a different profile.Previous studies have shown that the productivity of the vines, whatever their age, could be explained by the wood reserves and the size of the trunk. To have a better idea of differences linked to reserves, the structure-from-motion with multi-view stereo-photogrammetry (SfM-MVS) method was tested to measure trunk thickness and volume. The technique, which allows the creation of scaled, georeferenced 3D models based on photographs, was able to produce accurate models of field-grown grapevine trunks
Fuser, Vanessa <1990>. "Emporio del Vino - analisi di mercato sulla base dei prodotti proposti." Master's Degree Thesis, Università Ca' Foscari Venezia, 2017. http://hdl.handle.net/10579/9592.
Full textGALLERAND-SCHNEIDER, MARIE-ODILE. "Comportement de l'iode et du carbone vis-a-vis de materiaux a base de liant hydraulique." Paris 11, 1995. http://www.theses.fr/1995PA112259.
Full textRichard, Stéphanie. "Vies et morts des couples. Les séparations conjugales princières (Deuxième Maison d’Orléans, XIVe-XVe siècles)." Electronic Thesis or Diss., Paris 4, 2016. http://ezproxy.normandie-univ.fr/login?url=https://www.classiques-garnier.com/numerique-bases/garnier?filename=SrdMS01.
Full textThis PhD thesis deals with the topic of marital separation in its various forms; it aims at analyzing the behaviors which are implemented by spouses of higher nobility on such occasions. The phrase marital separation may be used to designate a wide range of configurations: for example, when husband and wife, though still married, are not living together, or when a marriage comes to an end, all these situations being reached through a legal process or not. This research is especially based on a thorough analysis examining the couples of the Second House of Orleans in the 14th and 15th centuries, as the marital lives of these Dukes and Duchesses provide a large sample of possible cases of separation. The research shows that the realities associated with marriage and married life are much more complex than what ecclesiastical and secular rules suggest on these matters. Another purpose of this thesis is to improve our understanding of the conjugal structure in princely aristocracy and of how married couples work. Therefore, the study sheds light on the solidarities shared by spouses when their separation does not derive from their own will to part. It shows that married couples are primarily defined by economic bonds between husband and wife. This work also highlights the possible autonomy enjoyed by spouses, in society and towards each other, in the cases where at least one of them intends to adjourn cohabitation or wants to put an end to their marriage
Marchal, Axel. "Recherches sur les bases moléculaires de la saveur sucrée des vins secs : approches analytique et sensorielle." Thesis, Bordeaux 2, 2010. http://www.theses.fr/2010BOR21779/document.
Full textSweetness contributes to the balance in taste of dry wines. An increase in sweet taste isobservable during post-fermentation maceration and oak-barrel aging. We have revealed thatthese phenomena are respectively due to the release in wines of yeast peptides and nonvolatileoak wood compounds.The role of Hsp12 protein from S.cerevisae on the increase in sweetness is establishedwith both molecular biology and sensorial analysis techniques.The development of a method coupling centrifugal partition chromatography andgustatometry has enabled us to fractionate an oak-wood extract and to purify several sapidcompounds. Thanks to both the LC-FTMS and the NMR spectroscopy methods, we havehighlighted four new molecules, called quercotriterpenosides (QTT), out of which QTT Iand III are responsible for a sweet taste. The perception thresholds of QTT I and a bitterlignan, lyoniresinol, are respectively 590 μg/L and 1.52 mg/L.LC-FT/MS method has been used to develop a quantification method for these compoundsand we have demonstrated the organoleptic impact of lyoniresinol in wines.QTT I and III are likely to contribute, directly or indirectly, to the increase in sweetnessconsecutive to barrel aging in dry wines
Moumen, Sabrine. "Etude de la robustesse de transistors JFET à base de SiC vis-à-vis de stress électriques." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2012. http://tel.archives-ouvertes.fr/tel-00744849.
Full textRoquemaure, Corine. "Comportement de doubles liaisons exométhyléniques vis à vis de catalyseurs à base de palladium II (type Wacker)." Aix-Marseille 3, 1987. http://www.theses.fr/1987AIX30047.
Full textRoquemaure, Corine. "Comportement de doubles liaisons exométhyléniques vis à vis de catalyseurs à base de palladium II (type Wacker)." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376094688.
Full textDe, Jager Christina Johanna. "Die ontwikkeling van ‘n MIV&VIGS-skoolplan vir onderwysers (Afrikaans)." Diss., University of Pretoria, 2010. http://hdl.handle.net/2263/25478.
Full textDissertation (MEd)--University of Pretoria, 2011.
Educational Psychology
unrestricted
Damatar, Maria <1991>. "Image-Based Detection of Nutrient Deficiency in Vine Leaves." Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/9160.
Full textDuarte, Venegas Celeste Natalia. "Caracterización de productos comerciales formulados a base de levaduras secas inactivas de uso enológico." Tesis, Universidad de Chile, 2013. http://repositorio.uchile.cl/handle/2250/148781.
Full textEn los últimos años, la elaboración del vino ha experimentado notables avances tecnológicos que han permitido mejorar su calidad y diversificar la oferta de los mismos. Así, el uso de nuevos insumos enológicos, tales como aquellos formulados a base de levaduras secas inactivas, han experimentado una alta demanda. Estos productos se utilizan como potenciadores de la fermentación alcohólica y maloláctica. Además, se han asociado con importantes características organolépticas en los vinos. A pesar de la relevancia de estos insumos, existe limitada información acerca de su composición. El siguiente estudio comparó 10 productos en base de levaduras secas inactivas mediante parámetros químicos y físicos, tales como, medición de absorbancia a 280 nm, ensayos de detección de proteínas sobre membranas de celulosa, contenido de proteínas, contenido de polisacáridos y fraccionamiento electroforético. Según los resultados obtenidos en este estudio, los productos comerciales a base de levaduras poseen propiedades físicas y químicas diferenciales. Se destacan los productos PC1, PC2 y PC3, los cuales mostraron una alta afinidad con el colorante Coomassie Blue R- 250 y presentaron un contenido significativamente mayores de proteínas en comparación al resto de los productos. En cuanto a la composición de polisacáridos fue altamente variable entre los distintos productos comerciales. Por otra parte el material proteico detectable por Coomassie Blue en geles de poliacrilamida corresponde a material altamente degradado.
In the past years, the wine making has experimented significant technological progress that have improved the quality and diversify their supply. Thus, the use of new oenological inputs, such as those formulated with inactive dry yeast, has experienced high demand. These products are used as enhancers of alcoholic and malolactic fermentation. Also, has been associated with significant organoleptic characteristics of wines. In spit of the relevance of these inputs, there is limited information about its composition. The following study compared 10 products based on inactive dry yeast by chemical and physical parameters such as, absorbance measurement at 280 nm, protein detection assays on cellulose membranes, protein and polysaccharide content and electrophoretic fractionation. According to the results obtained in this study, the commercial products based on yeasts have physical and chemical properties differential. Products are highlighted PC1, PC2 and PC3, which showed high affinity with Coomassie Blue R-250 and presented a significantly higher protein content compared to other products. In regards to polysaccharide composition was highly variable between different commercial products. Moreover material detectable by Coomassie Blue protein in polyacrylamide gels corresponding to highly degraded materials.
Choppin, Sabine. "Nouvelles superbases unimétalliques lithiées et sodées : réactivité vis-à-vis de l'allylphénylsulfure et des 2-, 3- et 4- chloropyridines." Nancy 1, 2001. http://docnum.univ-lorraine.fr/public/SCD_T_2001_0021_CHOPPIN.pdf.
Full textCouillaud, Samuel. "Synthèse, structure, propriétés physiques et réactivité vis-à-vis de l'hydrogène de nouveaux composés ternaires à base de magnésium." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2011. http://tel.archives-ouvertes.fr/tel-00649384.
Full textGodoy, Schulz Scarlet, and Sánchez Catalina Meza. "Bases para el desarrollo del negocio enoturístico en el Valle de Almahue." Tesis, Universidad de Chile, 2014. http://www.repositorio.uchile.cl/handle/2250/129704.
Full textChile, poseedor de un angosto y largo territorio, cuenta en sus más de 4000 kilómetros con la más extraordinaria variedad natural de paisajes, abarcando desde el desierto más árido del mundo, pasando por el altiplano, hasta lagos, volcanes, canales australes y glaciares que rompen sobre el Océano Pacífico. Es un país de contrastantes y acogedores paisajes, donde el contacto con la naturaleza es parte de una experiencia única y enriquecedora. En el último tiempo el país ha despertado un gran interés por aprovechar su riqueza natural y se ha beneficiado de un pujante potencial turístico, el cual ha crecido en cada uno de sus rincones. Cada año llegan más interesados de todo el mundo a conocer Chile, el país del fin del mundo, y a disfrutar de la vivencia que ofrece a lo largo de todo su territorio. Ante tal potencial, el sector público y privado han querido ser partícipes del alzamiento del país en este aspecto, por lo que se han creado una serie de instituciones y organismos dentro del país, como lo son Chile Es Tuyo1, Turismo Chile2, Planes Comunales de Desarrollo Turístico3, Estrategia Nacional de Turismo de Chile 2012-20204, entre otros, con el fin de que Chile se posicione como una potencia turística a nivel mundial. Dada la gran riqueza natural, y la gran influencia extranjera en el país, Chile ha sabido aprovecharse de los suelos para crecer de forma idónea y majestuosamente, cosechando uvas con las mejores cepas en más de 10 valles a lo largo del territorio5, convirtiendo al vino en un emblema nacional, cuya producción ha ido en constante aumento, así como los reconocimientos por su calidad a nivel internacional, lo cual ha repercutido en que su industria haya ido consolidándose de gran manera en la economía nacional. De esta forma es que se ha acrecentado en nuestro país un turismo relativamente nuevo: el turismo del vino, o también llamado, enoturismo. Sin duda alguna este tipo de turismo es uno de los atractivos que fascina a turistas extranjeros y que motiva también a los chilenos, gracias a que “integra bajo un mismo concepto temático los recursos y servicios turísticos de interés, existentes y potenciales, de una zona vitivinícola Un factor preponderante que tiene que ser tomado en consideración a la hora de insertarse en el complejo camino de la internalización de Chile como un destino turístico de alcance global es la importancia que tienen la existencia de alianzas y complementariedad de los proveedores de servicios turísticos y viñateros, ya que entre ambas partes se puede formar una oferta conjunta, la cual se potencie y sea atractiva para el turista nacional y extranjero. La idea es que estas alianzas sean beneficiosas tanto como para la comunidad como para los organismos participantes, y vengan de la mano de políticas sustentables, explorando zonas no intervenidas hoy en día y potenciándolas sin destruir su increíble unicidad. Una de las zonas que creemos que se beneficiaria de lo anterior es el Valle de Almahue, en la Región de O’Higgins, lugar conocido como la cuna del Carménère, donde se encuentran una de estas cepas más antiguas de Chile y posiblemente del mundo, y en donde la cultura campestre prima por sobretodo. A continuación se presenta un trabajo que tiene como propósito principal sentar las bases para un posterior desarrollo de un proyecto que buscará fomentar la concurrencia de turistas a la comuna de Pichidegua y principalmente, al Valle de Almahue, a modo de consolidar la zona no sólo en el área vitivinícola, sino también turística, aprovechando la gran ventaja que le da la producción de la base para una bebida tan admirada y valiosa como es el vino. Además, se expondrán una serie de recomendaciones y propuestas que se podrían llevar a cabo en el marco del enoturismo. La motivación de este trabajo se basa en las posibilidades de desarrollo que existen en la Comuna de Pichidegua, específicamente en el Valle de Almahue, y que se enmarcan en la existencia de factores favorables para su actividad turística, como lo son el creciente flujo de turistas que visitan el territorio nacional y el interés de éstos por los vinos, la consolidación de los vinos chilenos a nivel mundial, los múltiples atractivos y activos turísticos en la región y en zonas aledañas al Valle, entre otros. Si bien existen factores que limitan el enoturismo en la zona, como lo es la falta de infraestructura necesarias para llevar a cabo proyectos prometedores en el área, este trabajo toma en cuenta en que en el futuro se podrían llevar a cabo proyectos que impulsarían y atraerían diversos actores claves para llevar a cabo todas las ideas que hoy existen en el marco del turismo nacional y del Valle de Almahue
Yang, Zhenyu. "Synthèse et caractérisation de différentes nanoparticules up-conversion à base de fluorures cubiques dopées Yb/Er dans le NIR au VIS." Electronic Thesis or Diss., Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEC031.
Full textThe aim of this PhD project is to develop the synthesis of fluoride nanoparticles doped with rare earth or transition metal ions for novel applications in nanophotonics, such as probes for thermal imaging at nanoscale. Nanoparticles can also use for the coating of photovoltaic cells to optimize their yield by absorption of a larger range of wavelengths. The particularity of the fluoride particles doped with the adequate ions, is to exhibit, for example, efficient up-conversion processes or efficient infrared emissions, due to the high ionic nature of the metal-fluorine bonding. Emphasis will be put on the development and optimization of low-temperature millifluidic processes which are able to ensure the chemical, morphology and size homogeneities of the as obtained nanoparticles. The synthesized nanoparticles will be characterized (chemical composition, size distribution, morphology) as well as their physical properties, particularly the luminescence properties. The possibility of a migration of the millifluidic synthesis processes to microfluidic processes should be explored
Efendi, Jon. "Koordinationsverbindungen von Schiff-Basen des 3-Aminopropyltriethoxysilans und 3-(2-Aminoethylamino)-propyl-trimethoxysilans mit α-Hydroxybenzocarbonyl-Verbindungen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2009. http://nbn-resolving.de/urn:nbn:de:swb:105-3798468.
Full textSudant, Guillaume. "Synthèse, caractérisation et propriétés électrochimiques vis-à-vis du lithium d'oxydes divisés à base de vanadium et de titane." Amiens, 2004. http://www.theses.fr/2004AMIE0408.
Full textBarbary, Arnaud. "Bases génétiques de la résistance vis-à-vis des nématodes du genre Meloidogyne chez le piment." Electronic Thesis or Diss., Nice, 2014. http://www.theses.fr/2014NICE4120.
Full textRoot-knot nematodes (RKNs), Meloidogyne spp., are extremely polyphagous plant parasites worldwide. Since the use of most chemical nematicides is being prohibited, genetic resistance is an efficient alternative way to protect crops against these pests. However, nematode populations proved able to breakdown plant resistance, and genetic resources in terms of resistance genes (R-genes) are limited. Sustainable management of these valuable resources is thus a key point of R-gene durability. In pepper, Me1 and Me3 are two dominant major R-genes, currently used in breeding programs to control M. arenaria, M. incognita and M. javanica, the three main RKN species. Challenging these two genes in different genetic backgrounds against M. incognita demonstrated that (1) the efficiency of the R-genes in reducing the reproductive potential of RKNs is strongly affected by the plant genetic background, (2) the allelic status of the R-genes has no effect on nematode reproduction. According to these first results, a QTL analysis was performed to identify and to localize partial resistance factors against RKNs which could explain the differences observed between the genetic backgrounds. Focusing on M. incognita, M. arenaria and M. javanica, four new major QTLs were localized. They are all regrouped on pepper chromosome P1 except one QTL efficient against M. javanica, which was located on pepper chromosome P9. The cluster on chromosome P1, regrouping most of the newly discovered resistance factors, is described for the first time with respect to RKN resistance. As a conclusion, this work should contribute to the breeding of new pepper varieties with a high level of resistance against RKNs
Barbary, Arnaud. "Bases génétiques de la résistance vis-à-vis des nématodes du genre Meloidogyne chez le piment." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4120.
Full textRoot-knot nematodes (RKNs), Meloidogyne spp., are extremely polyphagous plant parasites worldwide. Since the use of most chemical nematicides is being prohibited, genetic resistance is an efficient alternative way to protect crops against these pests. However, nematode populations proved able to breakdown plant resistance, and genetic resources in terms of resistance genes (R-genes) are limited. Sustainable management of these valuable resources is thus a key point of R-gene durability. In pepper, Me1 and Me3 are two dominant major R-genes, currently used in breeding programs to control M. arenaria, M. incognita and M. javanica, the three main RKN species. Challenging these two genes in different genetic backgrounds against M. incognita demonstrated that (1) the efficiency of the R-genes in reducing the reproductive potential of RKNs is strongly affected by the plant genetic background, (2) the allelic status of the R-genes has no effect on nematode reproduction. According to these first results, a QTL analysis was performed to identify and to localize partial resistance factors against RKNs which could explain the differences observed between the genetic backgrounds. Focusing on M. incognita, M. arenaria and M. javanica, four new major QTLs were localized. They are all regrouped on pepper chromosome P1 except one QTL efficient against M. javanica, which was located on pepper chromosome P9. The cluster on chromosome P1, regrouping most of the newly discovered resistance factors, is described for the first time with respect to RKN resistance. As a conclusion, this work should contribute to the breeding of new pepper varieties with a high level of resistance against RKNs
Barros, Diogo Rafael Bento. "Amplificador de RF Doherty assimétrico de 2-vias." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15946.
Full textOs atuais esquemas de modulação e acesso ao meio, tais como o Wide- Band Code-Division Multiple Access (WCDMA) ou Orthogonal Frequency- Division Multiple Access (OFDMA), que são otimizados para a gestão eficiente do espetro electromagnético e elevada taxa de transmissão, originam sinais de elevado Peak-to-Average Power Ratio (PAPR) e requisitos de linearidade rigorosos. As arquiteturas de amplificação tradicionais, i.e. baseadas no operação em modo de corrente do dispositivo ativo, são incapazes de satisfazer estes requisitos em simultâneo. Assim, o amplificador de potência (do inglês, Power Ampli_er (PA)) incorre numa degradação significativa de rendimento energético em favor de maior linearidade, aumentando simultaneamente os custos de operação das estacões base para os operadores de telecomunicações móveis e o impacte ambiental. Este trabalho foca-se no estudo da arquitetura Doherty, a principal solução encontrada para melhorar o compromisso linearidade/rendimento para aplicações em estações-base de comunicações móveis. Para tal, são expostos os princípios básicos de amplificadores de rádio frequência assim como a análise teórica do tradicional PA Doherty (do inglês, Doherty Power Amplifier (DhPA)) de duas vias e suas variantes. O estudo _e complementado com o projeto e implementação de um PA excitador, em classe-AB, e de um DhPA de elevada potência, colocando-se em prática a teoria e técnicas de projeto estudadas ao longo deste trabalho, aliadas aos desafios da implementação com dispositivos reais de elevada potência.
Current modulation and medium access schemes, such as WCDMA, OFDMA, which are optimized for efficient management of the electromagnetic spectrum and high transmission rate, produce high PAPR signals and stringent linearity requirements. The traditional amplification architectures, i.e. based on current mode operation of the active device, are unable to meet these requirements simultaneously. As such, the power amplifier (PA) incurs in a significant degradation of energy efficiency in favor of greater linearity. Therefore they simultaneously increase the mobile telecom service providers base station operating costs and the environmental impact. This work focuses on the study of the Doherty architecture, the leading solution to improve the linearity/efficiency trade off for mobile communication base station applications. To this end, the basic principles of radio-frequency amplifiers are exposed as well as a theoretical analysis of the traditional two-way DhPA and its variants. The study is complemented with the design and implementation of a class- AB driver PA and a high power DhPA, putting into practice the theory and design techniques studied throughout this work together with the challenges of real, high power device implementation.
Loots, Mathilda Christina. "'n Verkenning van opvoeders se mobilisering van bates ter ondersteuning van gemeenskapshantering van MIV/VIGS." Diss., Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-09052005-122103/.
Full textCoiffic, Jean-Christophe. "Développement d'interconnexions en microélectronique à base de nanotubes de carbone." Montpellier 2, 2008. http://www.theses.fr/2008MON20143.
Full textJacob, Jean-Baptiste. "Spécialités pharmaceutiques anciennes à base de caféine ou de drogues à caféine." Paris 5, 1992. http://www.theses.fr/1992PA05P099.
Full textBourg, Stéphane. "Utilisation de la réactivité des fonctions Si-H vis-à-vis des métaux de transition. Préparation de précurseurs de céramiques." Montpellier 2, 1998. http://www.theses.fr/1998MON20048.
Full textDespas, Christelle. "Analyse des propriétés de sorption de la silice vis-à-vis des bases et des espèces cationiques par les méthodes diélectriques et électrochimiques." Nancy 1, 1998. http://docnum.univ-lorraine.fr/public/SCD_T_1998_0285_DESPAS.pdf.
Full textLiébana, Vinas Sara [Verfasser], and Michael [Akademischer Betreuer] Farle. "Anisotropic cobalt-based nanostructures : synthesis and characterization / Sara Liébana Vinas. Betreuer: Michael Farle." Duisburg, 2016. http://d-nb.info/1082504610/34.
Full textElorduy, Vidal Xoán Lois. "CARACTERIZACIÓN DE VINOS TINTOS DE VARIAS DENOMINACIONES DE ORIGEN CATALANAS EN BASE A LOS VINOS PRESENTES EN EL MERCADO. DO TARRAGONA, DO CONCA DE BARBERÀ Y DOQ PRIORAT." Doctoral thesis, Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/35893.
Full textElorduy Vidal, XL. (2014). CARACTERIZACIÓN DE VINOS TINTOS DE VARIAS DENOMINACIONES DE ORIGEN CATALANAS EN BASE A LOS VINOS PRESENTES EN EL MERCADO. DO TARRAGONA, DO CONCA DE BARBERÀ Y DOQ PRIORAT [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/35893
TESIS
Barbosa, João Pedro Borges. "Avaliação endoscópica das vias aéreas, perfil de gases sanguíneos, eletrólitos e do equilíbrio ácido-base em equinos submetidos ao treinamento de três tambores /." Araçatuba, 2015. http://hdl.handle.net/11449/138433.
Full textAbstract:The Three barrel competition requires of high performance athletic horses. The race more used in this modality and the Quarter Horse usually begins training very young. To have success, the animals must have high speed and acceleration, requiring high performance athletic horses. Reviews endoscopic reveal a high prevalence of diseases of the System Respiratory as Exercise induced pulmonary hemorrhage in Athletes horses. For allow evaluation of post airways of horses, an endoscopy provides evaluate a blood amount deposited in the airways after exercises. Associated with endoscopic examination a blood gas analysis has been widely used in order to identify the behavior of gas exchange in high-performance horses, beyond for understanding of the balance electrolyte and acid-base in the animals find, possessing great value for understanding metabolic disorders. The present study goal was to assess how Airway, the profile of blood gases, electrolytes, acid-base balance of horses submitted the Three barrel training. Sixteen horses divided into two groups of 8 animals, regular training (RT - 5 times) and sporadic training (ET - 2 times a week) were used in the experiment. Endoscopy was performed before and 90 min after training. They were held two blood samples by puncturing the transverse facial artery before heating (M0) and immediately after training (M1), and the readings were performed with the I-Stat®. They were determined PCO2, PO2, SO2, pH, BE, HCO3 and TCO2, Na +, K +, iCa, Glucose, Hg e Ht. It was used ANOVA with repeated measures over time for comparisons of groups and time (p <0.05). The HFL befell was mild (1-2) the animals from both groups with 8/8 (100%) in the TR and 5/8 (62.5%) for the TE. Presence of serous trachea 4/8 (50%) for both groups. The EIPH befell was mild (1-2) the animals from both groups with 4/8 (50%) in the RT group and 3/8 (37.5%) for the TE group. Animals with grade 2 EIPH had mild hypoxemia and hypercapnia after exercise
Orientador:Luiz Cláudio Nogueira Mendes
Banca:Pedro Vicente Michelotto Júnior
Banca:Rafael Resende Faleiros
Mestre
Helbert, Guillaume. "Contribution à la durabilité des câbles de Génie Civil vis-à-vis de la fatigue par un dispositif amortisseur à base de fils NiTi." Thesis, Lorient, 2014. http://www.theses.fr/2014LORIS341/document.
Full textShape memory alloys (SMA) have many interesting properties due to solid-solid phase transformations (usually between austenite and martensite), such as super-elasticity and/or shape memory effects. More particularly, Nickel-Titanium (NiTi) based SMA are currently used in many industrial fields for their oxydation resistance and their fatigue resistance. Furthermore, their dissipation capacities make them particularly suitable for using as dampers dedicated to Civil Engineering issues. Indeed, several phenomena (road traffic, earthquakes, wind, rain...) which are the main causes of structure vibrations, affect the sustainability of bridge cables. Current solutions, consisting in setting-up hydraulic dampers, are not satisfactory out of their working range in terms of amplitude and frequency. A new device based on NiTi wires is studied in this thesis. However, this material adapts its thermomechanical response according to input loading rates or amplitudes and thermal surroundings.In the thesis, we have developed a numerical tool which enables to predict the NiTi wires based damper influence on the dynamical response of the cable. Thus, the specimens are characterized using experimental tests in order to build a numerical thermomecanical model taking into account the superelasticity effect, at the REV scale. The model is validated according to an energetical criterion. The model is then extended to the scale of the structure, using a non-local finite elements model, in order to investigate heterogeneity effects.A damping device, developed during the thesis, is tested successfully on a full-scale bridge cable. Furthermore, the NiTi wires based damping device shows a real damping power effectiveness. The study of several test configurations provides recommendations for optimisation of the system. A related finite elements model is used to realize a transient dynamic analysis. The model, which lies on the superelastic law, is validated. It justifies, afterwards, the consideration of phenomena assumed to be sources of dissipation, such as intrinsic dissipation, thermomechanical coupling and R-phase transformation. These phenomena can be numerically isolated, to evaluate how they take part in the mitigation of cable vibrations
Gao, Yuan. "Stratégies de modélisation et protection vis à vis des décharges électrostatiques (ESD) adaptées aux exigences de la norme du composant chargé (CDM)." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT005H/document.
Full textIn the semiconductor industry, electrostatic discharge (ESD) can occur throughout over the whole life of a chip. This is a real problem for the reliability of the integrated circuit (IC) and a major failure cause. A new ESD model, Charged Device Model (CDM) was recently developed to simulate a charged device which discharges through one of its pin to ground. The waveform of such a discharge is a current pulse of high amplitude (15A for a 1KV CDM stress on a precharged capacitor of 10pF) over a few nanoseconds duration. Indeed, it is increasingly common to encounter ESD failure signatures into the IC core, usually gate oxide breakdowns that are typically induced by CDM stress. ESD protections with inappropriate triggering speed or strong discharge currents (into the substrate or the metal tracks) can locally lead to potential drop sufficient to damage the oxide (3-5nm thickness in 45nm CMOS technology).Given the challenges of the CDM discharges, this thesis was firstly focused on the detection and understanding of latent defects caused by CDM stress in integrated circuits, using a high- ensitivity technique, namely low frequency noise measurement (LFN). A DCDC converter has been stressed by the CDM test. After each step of processing (storage, burn-in, and aging), the evolution of latent defects generated was investigated. Secondly, a methodology for modeling the complete integrated circuit has been proposed to simulate the CDM protection strategy by limiting the simulation convergence problems. Its main originality consists in the modeling of the substrate resistance under very high injection adapted to the CDM discharge using both VF-TLP (Very Fast Transmission Line Pulsing) measurement and 2D/3D physical simulation. The model was successfully validated on 45nm CMOS and 0.25 µm BiCMOS technologies. Finally, the CDM simulation methodology was validated on a commercial product
Kraus, Daniel [Verfasser], Claudia [Akademischer Betreuer] [Gutachter] Czado, Roger [Gutachter] Cooke, and Matthias [Gutachter] Fischer. "D-vine copula based quantile regression and the simplifying assumption for vine copulas / Daniel Kraus ; Gutachter: Roger Cooke, Matthias Fischer, Claudia Czado ; Betreuer: Claudia Czado." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1143125053/34.
Full textChittajallu, Dilip Roy. "“How Good Is the Street?” a Characteristic-Based Evaluation of Vine, Walnut, and Main Streets, Cincinnati, Ohio." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1093027197.
Full textMolina, Tejada Gonzalo Andrés. "Sistema para Normalizar Bases de Datos de Aromas Medidos con Nariz Electrónica." Tesis, Universidad de Chile, 2010. http://www.repositorio.uchile.cl/handle/2250/104005.
Full textEn este trabajo se desarrolla un sistema computacional, que permite normalizar bases de datos de aromas vitivinícolas medidos con una nariz electrónica, en momentos diferentes. Al comparar los perfiles se observan desplazamientos provocados por el envejecimiento de la columna cromatográfica y/o por el hecho de no haber seguido estrictamente el protocolo de limpieza de ella. Esto motiva implementar un método que elimine estos desplazamientos, para comparar la base de datos ajustada con la base original usando el criterio de cual tiene una distribución, que permita discriminar categorías dentro de ella de mejor manera. Para esto se estudian dos casos de normalización. En el primer caso se considera una base de datos construida entre los años 2004 y 2006 de 3330 perfiles, que presentan en diferentes zonas de la señal desplazamientos que varían entre distintos aromas. Se pretende ajustar estos desplazamientos a una referencia, para que todos los perfiles queden con la misma forma. Esta referencia es el perfil que tiene la forma que más se repite en la base. El propósito de hacer esto es comparar la capacidad de discriminación, que tiene un clasificador para separar la base de datos en categorías, cuando esta presenta corrimientos entre señales y cuando estos son eliminados. En el segundo caso se ajusta la base de datos descrita anteriormente a un aroma medido en 2009, que presenta un importante desplazamiento respecto a los perfiles en esta base. Esto se hace con el objetivo de entrenar un clasificador usando la base ajustada, para clasificar aromas con el tipo de corrimiento del perfil medido en 2009. Para construir los discriminadores se utilizan las herramientas de análisis: Máquina de Soporte Vectorial, Discriminante Lineal de Fisher y Transformada Wavelet. Se obtiene que la normalización de la base respecto a una referencia dentro de la misma, reduce levemente el rendimiento del clasificador utilizado. Se concluye que la normalización descrita en el primer caso no mejora el rendimiento del clasificador implementado. Por otro lado la normalización de la base respecto a un perfil medido en 2009, permite clasificar correctamente el 100% de los aromas probados, sin embargo este resultado no se puede generalizar, debido al escaso número de ejemplos con que se cuenta para validar el clasificador.
López, Tamames Elvira. "Características organolépticas de los vinos base destinados a la elaboración del cava en función de tratamientos tecnológicos prefermentativos." Doctoral thesis, Universitat de Barcelona, 1993. http://hdl.handle.net/10803/673082.
Full textGroust, Jean-François. "Rôle de la paire acide-base vis-à-vis de la réactivité de faujasites alcalines Y, X et LSX de basicité variable : réaction modèle de conversion du méthylbutynol et application environnementale en oxydation du dichlorométhane." Paris 6, 2007. http://www.theses.fr/2007PA066441.
Full textBarbosa, João Pedro Borges [UNESP]. "Avaliação endoscópica das vias aéreas, perfil de gases sanguíneos, eletrólitos e do equilíbrio ácido-base em equinos submetidos ao treinamento de três tambores: João Pedro Borges Barbosa. -." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/138433.
Full textFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
The Three barrel competition requires of high performance athletic horses. The race more used in this modality and the Quarter Horse usually begins training very young. To have success, the animals must have high speed and acceleration, requiring high performance athletic horses. Reviews endoscopic reveal a high prevalence of diseases of the System Respiratory as Exercise induced pulmonary hemorrhage in Athletes horses. For allow evaluation of post airways of horses, an endoscopy provides evaluate a blood amount deposited in the airways after exercises. Associated with endoscopic examination a blood gas analysis has been widely used in order to identify the behavior of gas exchange in high-performance horses, beyond for understanding of the balance electrolyte and acid-base in the animals find, possessing great value for understanding metabolic disorders. The present study goal was to assess how Airway, the profile of blood gases, electrolytes, acid-base balance of horses submitted the Three barrel training. Sixteen horses divided into two groups of 8 animals, regular training (RT - 5 times) and sporadic training (ET - 2 times a week) were used in the experiment. Endoscopy was performed before and 90 min after training. They were held two blood samples by puncturing the transverse facial artery before heating (M0) and immediately after training (M1), and the readings were performed with the I-Stat®. They were determined PCO2, PO2, SO2, pH, BE, HCO3 and TCO2, Na +, K +, iCa, Glucose, Hg e Ht. It was used ANOVA with repeated measures over time for comparisons of groups and time (p <0.05). The HFL befell was mild (1-2) the animals from both groups with 8/8 (100%) in the TR and 5/8 (62.5%) for the TE. Presence of serous trachea 4/8 (50%) for both groups. The EIPH befell was mild (1-2) the animals from both groups with 4/8 (50%) in the RT group and 3/8 (37.5%) for the TE group. Animals with grade 2 EIPH had mild hypoxemia and hypercapnia after exercise
FAPESP: 2014/23012-7
Riondel, Alain. "Étude de la réactivité de carbonates et de carbamates chlorés vis-à-vis de nucléophiles. Formation d'anions à l'aide des bases complexes." Nancy 1, 1988. http://www.theses.fr/1988NAN10505.
Full textLowrie, Stephen L. "Developing and facilitating a reproducible disciplemaking curriculum based on the vine analogy of John 15." Fort Worth, TX : Southwestern Baptist Theological Seminary, 2008. http://dx.doi.org/10.2986/tren.049-0494.
Full textRüger, Robert, Thomas Niehaus, Lenthe Erik van, Thomas Heine, and Lucas Visscher. "Vibrationally resolved UV/Vis spectroscopy with time-dependent density functional based tight binding." AIP Publishing, 2016. https://ul.qucosa.de/id/qucosa%3A21502.
Full textFausti, Giovanni. "Towards new approaches for the generation of phosphorus based radical : synthetic and mechanistic investigations." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC271/document.
Full textThis Thesis reports three complimentary modes of activation for the generation of phosphorus based radicals, which have been employed for the synthesis of organophosphorus compounds.We have first described a photocatalytic generation phosphinoyl radicals by using the acridinium salt, 9-mesityl-10-methylacridinium perchlorate known as Fukuzumi’ catalyst, as a photocatalyst and diphenyliodonium triflate as an external photooxidant. This purely organic system allowed us to achieve the first metal–free hydrophosphinylation of alkenes. Several mechanistic investigations, such as Electron Paramagnetic Resonance (EPR), Laser Flash Photolysis, fluorescence quenching and quantum yields measurements have been employed to understand factors governing this photoreaction.In the subsequent chapter, the formation of Electron–Donor–Acceptor complexes (EDA) between secondary phosphine oxides and the diphenyliodonium ion has been used to generate phosphinoyl radical under blue irradiation. A combined experimental and theoretical investigations have been used to elucidate the formation of EDA complexes. This strategy has then been employed to describe hydrophosphinylation of alkenes.The last chapter reports a metal–free visible light mild method for the synthesis of phosphorylated oxindoles, which are potentially active pharmaceutical compounds. Scope and limitations of this approach have been discussed along with preliminary mechanistic investigations
Triolo, Roberta. "Hierarchy of factors impacting grape berry mass at different scales and its direct and indirect effects on grape and wine composition." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0336/document.
Full textFinal berry mass is the result of the integrated effect of several factors. They also influence berry composition. The present work was designed to study the simultaneous effect of major factors influencing berry mass and composition, to hierarchize their impact at different scales, to distinguish their direct and indirect effect on berry composition and to compare the profile of wines made from large and small berries. The study was carried out simultaneously on two vineyards located in the Saint Emil ion (France) and Alcamo (Sicily) areas, during 2014 and 2015. On the first site, vines were planted on two soil types, while on the second site two different irrigation treatments were applied. Depending on the scale, some factors homogeneously impacted the berry mass and composition. At the intra-parcel scale, vine water status represented the most impacting factor, while berry seed number did not have significant effect. Opposite results were obtained when the investigation was carried out at the intra-bunch and intra-plant scales. At large scale, factors impacted directly and indirectly berry compounds and grape juices and wines produced from smaller berries were more concentrated. Neither at intra-bunch, nor at intra-plant scales, berry size effect on juice composition was significant. Only anthocyanin concentration was related to berry size at all scales. This fact was particularly obvious in berries produced under limited water conditions. Water deficit increased the skin to flesh ratio, independently of berry size. This means that small and large berries, produced from a single parcel with homogenous water uptake conditions, tend to have similar enological profiles
Zambrano, García Pedro Hugo. "Caracterización física, química y sensorial de vino base carignan y la mezcla carignan-garnacha, carignan-monastrell y carignan-carnacha-monastrell." Tesis, Universidad de Chile, 2017. http://repositorio.uchile.cl/handle/2250/153127.
Full textLas mezclas o ensamblajes, son procesos enológicos comunes en bodega, las cuales se basan en la búsqueda de un equilibrio entre atributos sensoriales específicos como el color, aroma y gusto, mediante el uso de vinos de distintas cepas, permitiendo obtener así un producto final de características únicas. Este proceso genera una serie de modificaciones en los dos principales grupos de compuestos que forman la fracción macromolecular del vino: polisacáridos y compuestos fenólicos. Numerosas investigaciones han determinado cómo las mezclas afectan los compuestos fenólicos, y cómo éstos a su vez, modifican la percepción sensorial del color en el vino al mejorar procesos como la copigmentación. Por otra parte, para el caso de los polisacáridos algunas investigaciones han establecido cómo el uso de compuestos de origen comercial (carboximetilcelulosa y goma arábiga) modifican la percepción de astringencia en vinos. Hoy en el mercado es posible encontrar no solo mezclas de vinos tintos de distintas variedades, sino que también mezclas de tintos y blancos que aparte de modificar los aspectos antes mencionados, pueden mejorar el aroma final del vino. El presente estudio estuvo conformado por un ensayo de cuatro tratamientos, diferenciados por las distintas contribuciones porcentuales de variedades viníferas de secano (Carignan, Monastrell y Garnacha), los cuales fueron sometidas a una serie de análisis químicos, físicos y sensoriales, con el objetivo de determinar el efecto de los tratamientos sobre las variables medidas. Se pudo concluir que la composición fenólica del vino base del cv. Carignan se vio modificada por la adición de los vinos Garnacha y Monastrell. La magnitud de las modificaciones provocadas por las mezclas de vino no tuvieron estricta relación con el porcentaje adicionado de las variedades modificantes (Monastrell y Garnacha), por lo que las distintas variedades y sus porcentajes contribuyeron a la disminución de compuestos fenólicos de forma diferenciada.
Griveau, Sophie. "Analyse de l'activité électrocatalytique de matériaux moléculaires, à base de films de porphyrines et de phtalocyanines de cobalt électropolymérisés, vis-à-vis de l'oxydation de thiols : application à l'électroanalyse." Paris 6, 2002. http://www.theses.fr/2002PA066165.
Full textFagerstedt, Olle. "Hållbar fondförvaltning – för spararens eller förvaltarens vinst? : En jämförelse mellan storbanker och webbaserade fondbolag." Thesis, Södertörns högskola, Institutionen för samhällsvetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-30407.
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