Dissertations / Theses on the topic 'Dioxide de soufre'
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Zamotaeva, Valeriya. "High-resolution FTIR spectra analysis of sulfur dioxide isotopologues." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCK053.
In this thesis we considered the spectral properties of the sulfur dioxide. The experimental FTIR spectra of numerous sulfur dioxide isotopologues, 32S16O2, 34S16O2, 32S18O2 and 32S16O18O, were first recorded in the regions of fundamental, «hot», combination and overtone bands. The wide variability of the experimental conditions gave possibility to observe and identify for the first time transitions be¬ longing to the following of ro-vibrational bands: 3v2, 3v2 - v2, 2v2 - v2 bands of 32S16O2; 2v2 - v2 band of 34S16O2; v1 + v2, v2 + v3, v1 + v3, 2v1, 2v3 bands of 32S18O2; v1, v3, 2v1, v1 + v3, 2v3 bands of 32S16O18O. The inverse spectroscopic problems were solved for the studied states with the «rms»-deviation comparable to the experimental uncertainty of the spectral line position. As a result of the analysis about 38 000 ro-vibrational transitions belonging to 17 excited vibrational states were identified for the first time. The obtained highly accurate data on all sulfur dioxide isotopologues were used to correct the parameters of the IPF
Bezerra, De Moraes Medeiros Éliane. "Étude comparative de deux réacteurs catalytiques triphasés à co-courant descendant en présence de la réaction d'oxydation du dioxyde de soufre sur charbon actif." Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL013N.
Payan, Claire. "Acidification of musts and wines by fumaric acid : Impact of its addition on the chemical and sensory characteristics of varietal wines in the frame of Climate change changement climatique." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0489.
Climate change is affecting the composition of grape berries and has led to imbalances in the wine matrix, with an increase in alcohol content and a significant decrease in the acidity of wines. In this context, finding solutions to acidify musts and wines is crucial to maintain their stability, preservation, and sensory quality. The main goal of this study was to test the addition of an alternative acid: fumaric acid for must and wine acidification, and to assess its impact on the chemical and sensory characteristics of wines from different grape varieties and origins. A secondary objective was to study the use of fumaric acid to enhance wine preservation, either as a reduction or as an alternative to the addition of sulfur dioxide (SO2) in traditional winemaking and wine preservation.A preliminary study on the chemical properties to define the solubility and acidifying power of fumaric acid, in comparison to tartaric, malic, and lactic acids, was carried out in various hydro-alcoholic matrices, musts, and wines (both white and red). Additionally, a study on its sensory properties was conducted. A simple, quick, reliable, and validated routine analysis method using high-performance liquid chromatography with UV detection (HPLC-UV) was also developed to quantify fumaric acid in various types of wines. This method has a detection limit of 0.2 mg/L and a quantification limit of 0.3 mg/L, with both inter and intra-day repeatability showing an RSD ≤ 2%. This research work also allowed the evaluation of the impact of adding fumaric acid to Cabernet Sauvignon red wine, compared to the addition of tartaric acid, at different stages of winemaking: during vatting and just after racking. The results of this first study helped understand the role of fumaric acid in winemaking steps, particularly its metabolism when added before alcoholic fermentation. A second study concerns the addition of fumaric acid at different doses (1 g/L and 2 g/L), compared to tartaric acid (1.25 g/L and 2.5 g/L), before bottling Cabernet Sauvignon red wine, revealing its effectiveness in pH control and its potential to reduce the use of SO2. The results of this second experiment revealed a significant impact of adding fumaric acid on phenolic compounds, particularly catechin and epicatechin, which are maintained at higher concentrations over time compared to the control and the modalities with tartaric acid. Finally, the use of fumaric acid in white winemaking, specifically on Müller-Thurgau (a German grape variety, Riesling x Sylvaner), was studied. The addition of fumaric acid effectively inhibited malolactic fermentation as effectively as the addition of SO2. The results indicate that adding fumaric acid during preservation and bottling appears as promising alternatives for wine acidification and more sustainable oenological practices that reduce the use of SO2. The concrete results obtained justify the inclusion of must and wine acidification with fumaric acid by the OIV in the International Code of Oenological Practices of the OIV. Further studies should refine the use and functionalities of fumaric acid on musts (in particular) and wines
Dam, Marcel Van. "Absorption sélective du dioxyde de soufre par des solvants organiques : étude des paramètres d'interaction, de solubilité et de cinétique." Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL055N.
Soufi, Jihène. "Traitement des gaz d’échappement des groupes électrogènes alimentés par des gasoils, fuels marines ou bio-huiles : élimination des HAP en présence ou non de SOx." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1120.
Urupina, Darya. "Uptake and reactivity of sulfur dioxide gas onto Icelandic volcanic dusts." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2020. http://www.theses.fr/2020MTLD0022.
This thesis investigates the interactions of sulfur dioxide (SO2) gas with Icelandic Volcanic Dusts. Five natural volcanic dust samples were used for the study: Hagavatn, Mýrdalssandur, Maelifellssandur, Dyngjusandur and Eyjafjallajökull. The heterogeneous interactions of gas-phase SO2 with volcanic dusts are investigated using a number of complimentary techniques. Temporal profiles of SO2 uptake and, more precisely, the steady state uptake coefficients have been determined experimentally. These are important kinetic parameters that can be implemented in models. Mechanisms of formation of various surface species resulting from the interactions of SO2 with the surface of dusts are proposed. A new method for quantification of surface sulphur species has been developed and validated. This method can now be used both for further laboratory investigations and in field measurements. It is evidenced that the interactions of SO2 gas with the volcanic dust is a long continuous process. The products formed on the surface are stable and definitely influence the mineral particle properties. It is evidenced that the interactions of SO2 gas and volcanic particles are highly influenced by humidity and by UV light. The influence of surface composition also plays an important role especially at levels of humidity equal or lower than 30% RH. This work emphasizes the importance of using relevant natural dust samples in order to study the heterogeneous atmospheric phenomena involving natural solid particles
Wolff, Niklas von. "Reaction mechanisms of CO₂ activation and catalytic reduction." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS580.
The use of CO₂ as a C1 chemical feedstock for the fine chemical industry is interesting both economically and ecologically, as CO₂ is non-toxic, abundant and cheap. Nevertheless, transformations of CO₂ into value-added products is hampered by its high thermodynamic stability and its inertness toward reduction. In order to design new catalysts able to overcome this kinetic challenge, a profound understanding of the reaction mechanisms at play in CO₂ reduction is needed. Using novel N/Si+ frustrated Lewis pairs (FLPs), the influence of CO₂ adducts and different hydroborane reducing agents on the reaction mechanism in the catalytic hydroboration of CO₂ were investigated, both by DFT calculations and experiments. In a second step, the reaction mechanism of a novel reaction for the creation of C–C bonds from CO₂ and pyridylsilanes (C₅H₄N–SiMe₃) was analyzed by DFT calculations. It was shown that CO₂ plays a double role in this transformation, acting both as a catalyst and a C1-building block. The fine understanding of this transformation then led to the development of a novel approach for the synthesis of sulfones and sulfonamides. Starting from SO₂ and aromatic silanes/amine silanes, these products were obtained in a single step under metal-free conditions. Noteworthy, sulfones and sulfonamides are common motifs in organic chemistry and found in a variety of highly important drugs. Finally, this concept was extended to aromatic halides as coupling partners, and it was thus shown for the first time that a sulfonylative Hiyama reaction is a possible approach to the synthesis of sulfones
Bakaï, Marie-France. "Développement d’un procédé de réduction des sulfites dans les vins." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0374/document.
SO2 is an additive used in enology for its antiseptic, antioxidant and antioxydasic properties. It is introduced in wines in large quantities due to its high binding power with carbonyl compounds, which limits its activity. The maximum SO2 content authorized is notalways enough to avoid fermentative phenomena during wine storage. The main objective of this project was to develop a method to reduce the sulfur dioxide concentration in wines byeliminating some of carbonyl compounds responsible for the SO2 binding. The method used was solid-phase extraction (SPE). It involves interactions between a liquid and a porous solid support modified with an extractive function. Previous work allowed to select hydrazine andsulfonylhydrazine as extractive reagents. These functions were fixed on organic polymersupports according to two routes : functionnalization of commercial sulfonic resins and suspension copolymerization of glycidyl methacrylate (followed by the functionnalization). The solid supports obtained were characterized in order to validate the functionnalization.Then selective extractions were executed on model solutions. The diminution of carbonylcompounds concentration and SO2 content was showed by those experiments. The presence of contaminants in the solutions was investigated before applying the method to wine
Ben, Youssef Ismaïl. "Synthèse et caractérisation de nouveaux polymères comportant un nombre contrôlé de sites basiques : application à la détection du dioxyde de soufre par des microcapteurs à onde acoustique de surface." Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL043N/document.
This work aimed at developing new surface acoustic wave (SAW) microsensors capable of detecting traces of sulfur dioxide (SO₂) through a sensitive layer based on a functional polymer. An original family of five polyurethaneimide (PUI) block copolymers containing a controlled number of tertiary amine sites with different chemical structures was synthesized and characterized. These materials exhibited original properties in solution and solid state, which were mainly due to the presence of the basic sites and the block structure combining polyether soft blocks and partially fluorinated hard blocks. Their excellent film-forming character allowed their application as SO₂ sensitive layers on SAW microsensors. Two bi-layer and three-layer structures of Love wave microsensors were developed by respecting the conditions of the Love wave generation. The bi-layer structure included the Quartz ST-90° as the piezoelectric substrate and one of the PUIs acting as both guiding and sensitive layer. This structure generated the Love wave but its high sensitivity to temperature was a major drawback for gas sensors. The addition of a ZnO guiding layer in a three-layer structure led to a microsensor almost insensitive to temperature and thus compatible with the targeted application. The experimental results for SO₂ detection showed that all the PUIs contributed to improve the sensitivity compared to the device without polymer layer. The presence of tertiary amine sites led to a significant improvement in gas sensitivity which was not only governed by their basicity but also by their steric hindrance which played a determining role
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.
The 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
Aurousseau, Marc. "Étude d'un procédé électrochimique de dépollution d'effluents gazeux contenant du dioxyde de soufre et des oxydes d'azote, par voie directe ou indirecte à l'aide du couple Redox Ce(III)/Ce(IV)." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL138N.
Lequin, Sonia. "Etude de l'adsorption et de la diffusion en phase gazeuse, de petites molécules actives du vin dans le liège." Phd thesis, Université de Bourgogne, 2010. http://tel.archives-ouvertes.fr/tel-00674045.
Tebby, Zoé. "Cellules solaires hybrides organiques-inorganiques sur support souple." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13639/document.
This work aimed to develop dye-sensitized solar cells on plastic substrates. In this context, a new low-temperature method to make nanoporous oxide layers based on ultraviolet irradiation under air was studied. First of all, titanium dioxide layers were prepared with this method; the films obtained were composed of a mesoporous network of interconnected anatase titanium dioxide nanoparticles as evidenced by scanning electron microscopy, X-ray diffraction, nitrogen sorption and mercury porosimetries, and thermogravimetric analysis. After sensitizing the films with a ruthenium polypyridyl complex, the photovoltaic cells based on the films in contact with a liquid electrolyte gave conversion efficiencies between 1.6 and 2.5% depending on the nature of the particles used. This low-temperature method based on ultraviolet irradiation was then expanded to other oxides, such as zinc oxide and tin dioxide, as well as to core-shell structures. The conversion efficiencies obtained with tin dioxide were very high, i.e. 1.5 to 1.8%, compared to those usually reported in the literature for films sintered at high temperatures. The higher efficiencies obtained for the UV-treated films were related to higher open circuit potentials and higher fill factors. Therefore, the physical phenomena involved were investigated with various techniques; in particular, electrochemical impedance spectroscopy and open circuit voltage decay. Finally, the electrochromic performances of the low-temperature UV-processed nanoparticulate titanium dioxide films were studied on glass and plastic substrates with an ionic liquid. The coloration efficiencies were found to be comparable to those of high-temperature processed layers
Arlot-Corré, Stéphanie. "Étude et stabilisation des hydrures d'alliages substitués La(1-x)RxNi(5-y)My (R=Ce ou Nd, et M=Al ou Zr) par empoisement des surfaces." Université Joseph Fourier (Grenoble ; 1971-2015), 1999. http://www.theses.fr/1999GRE10086.
Benhidjeb, Nadra. "Etude théorique et expérimentale de l'évolution de la structure poreuse lors de la sulfatation de la chaux." Mulhouse, 1996. http://www.theses.fr/1996MULH0442.
JORDA, MICHELE. "Etude d'agregats d'ions moleculaires negatifs de dioxyde de soufre." Paris 11, 1990. http://www.theses.fr/1990PA112183.
Gaudin, Michael. "Ablation laser impulsionnelle : source de nanoparticules en vol et de films minces : Développement de matériaux nanostructurés à base d'argent, de vanadium et de dioxyde de vanadium." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0025/document.
The work presented in this thesis is focused on the development of an experimental setup for the synthesis of nanoparticles (NPs) by a physical route, based on the laser vaporization of a target and followed by the rapid quenching of the plasma plume. Combining such a NP source with conventional laser ablation makes possible to synthesize silver and vanadium NPs in stacks on substrates or embedded in different matrices synthesized by laser ablation. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) analysis revealed crystallized spherical NPs relatively monodisperse in size (~ 3 nm in diameter) depending on the residence time in the nucleation cavity. The synthesis of amorphous Al2O3 nanocomposites doped with metallic silver NPs of different sizes showed the influence of the size on the position and the width of the surface plasmon resonance (SPR) of the nanostructured material. The NPs keep their original shape during impact on the substrate, leading to highly porous NPs stacks (approximately 50%). Vanadium dioxide nanoparticles (VO2 NPs) have been synthesized by annealing vanadium NPs stacks. Due to their individual behaviour, VO2NPs exhibit lower transition temperature (~ 50°C) and larger hysteresis width (~ 10-30°C) than thin films (transition temperature around 68°C and hysteresis width around 3°C). By coupling a PLD thin film and a NPs stack, it is possible to combine their properties and obtain a nanostructured material having a step transition
Limousy, Lionel. "Etude de l'empoisonnement par le soufre d'un catalyseur d'amorçage destiné à protéger un piège à NOx : recherche d'une stratégie de régénération." Mulhouse, 2000. http://www.theses.fr/2000MULH0611.
Gosselin, Catherine. "Inhalation d'anhydride sulfureux et pathologie respiratoire : à propos d'un cas d'inhalation aiguë accidentelle survenu en milieu de travail (CHR de Caen)." Caen, 1990. http://www.theses.fr/1990CAEN3103.
Berké, Bénédicte. "Le devenir du dioxyde de soufre dans les vins de Bordeaux." Bordeaux 2, 1998. http://www.theses.fr/1998BOR2B001.
Duhail, Céline. "La pourriture du raisin : facteurs de sélection des micro-organismes dominants et incidences œnologiques." Bordeaux 2, 1999. http://www.theses.fr/1999BOR20670.
Berger, Franck. "Mécanismes réactionnels d'interaction du SO2 et du DEMP en surface de détecteurs de gaz à base de dioxyde d'étain." Besançon, 1995. http://www.theses.fr/1995BESA2039.
Bui, Dai Nghia. "Evolution des états de surface du dioxyde d'étain en fonction du traitement gazeux au dioxyde de soufre. Application à l'étude des systèmes dioxyde d'étain-hydrogène sulfuré et dioxyde d'étain-benzène." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 1985. http://tel.archives-ouvertes.fr/tel-00808532.
Py, Xavier. "L'oxydation du dioxyde de soufre sur charbon actif en milieu acide concentré : des phénomènes fondamentaux au procédé propre." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPLA001.
Djoudjou, Rachid. "Influence des espèces soufrées sur la corrosion par piqûre des aciers inoxydables et sur son inhibition par les ions molybdate." Compiègne, 1993. http://www.theses.fr/1993COMPD598.
Avila, Galarza Alfredo. "Diffusion des polluants atmosphériques dans une zone à topographie complexe : validation d'un modèle à l'aide des mesures d'Airparif." Paris 12, 1996. http://www.theses.fr/1996PA120069.
Salem, Ibtissam. "Elimination des NOx issus de sources fixes : réduction par les hydrocarbures en C3 en présence de SO2." Poitiers, 2005. http://www.theses.fr/2005POIT2275.
In the present work the NOx reduction with C3 hydrocarbons has been examined. The objective is to study the influence of SO2 on metal based catalysts with an oxygen excess in the presence of CO2 and H2O, in a temperature range from 200 to 400 °C. The NOx are totally converted under stoechiometric conditions in the absence of sulfur dioxide and the most sulfur resistant catalyst is Pt/ZrAl. A series of different metals (Pt, Pd, Rh, Ag, Ir, Sn ) supported on several oxides (Al, , K-Al, Ce-Al, Ti-Al, Zr-Al, Ce-Zr, Si, C) were tested for NOx reduction with 1000 ppm propylene and the Pt/ZrAl was found to be the most active catalyst. The sulfation of the catalysts, generally leads to an increase of their activity in the presence of SO2, and conversely to a decrease of the N2O selectivity. Finally, the NO consumption has been observed in both the presence and the absence of propane. This phenomenon has been associated with the nitric acid formation via NO oxidation and not with NOx reduction
Cruchon, Nathalie. "Les sulfites." Bordeaux 2, 1993. http://www.theses.fr/1993BOR2PE58.
Amokrane, Hossine. "Étude expérimentale et modélisation de l'absorption de dioxyde de soufre en milieu dispersé liquide." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT085H.
Barbe, Jean-Christophe. "La combinaison du dioxyde de soufre dans les moûts et vins issus de raisins botrytisés : rôle des bactéries acétiques." Bordeaux 2, 2000. http://www.theses.fr/2000BOR20745.
Potteau, Elisabeth. "Mécanisme de la réduction électrochimique du dioxyde de soufre dans les solvants non aqueux." Lille 1, 1998. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1998/50376-1998-349.pdf.
Waqif, Mohamed. "Caractérisation par spectroscopie infrarouge de la nature et des propriétés des espèces sulfates adsorbées à la surface d'oxydes métalliques simples ou mixtes." Caen, 1991. http://www.theses.fr/1991CAEN2022.
Conjat, Matthieu. "Traitement et interprétation des résultats du Détecteur Interférométrique Panoramique de Pollution DIPP." Nice, 2008. http://www.theses.fr/2008NICE4016.
This thesis describes the development of a new instruments, the Détecteur Interférométrique Panoramique de Pollution (DIPP) ; This instrument, derived from the jovian seimometer « SYMPA », was designed like a robust and compact detector, in order to provide a simple way of monitoring the air pollution. The four images in quadrature of phase given by the DIPP are combined to determine at each point of the field of view the concentration of pollution. First conceived to measure the nitrogen dioxide concentration along a line of sight, according to the Fourier Transform Spectrometry method, studies were carried out in order to determine if the DIPP could observe other main pollutants. We could not during this work the extreme precision required for optics manufacturing and the critical adaptation of the entry filter in order to obtain measurable interference fringes. The high selectivity of the entry filter (visible light, at 440 nm) also attenuates the signal, separated into four polarized images. Other difficulties, like a structural defect of the entry filter generating parasitic fringes, can be attenuated by additional calibration operations? We thus directed our efforts towards a better correction of the geometrical distortions induced by the optical elements of the DIPP. The development of acquisition and image processing software also made it possible to increase the speed of the measurements reduction
Jay, Sophie. "Etude expérimentale de la solubilté du soufre dans le gaz naturel." Pau, 2009. http://www.theses.fr/2009PAUU3024.
For several years occurrence of sulphur deposits in natural gas transmission facilities is observed. Mainly located downstream of a pressure reduction facility, these deposits lead to many security problems and represent a significant additional financial cost for the operator. The literature review on this topic has shown a total lack of experimental data of sulphur solubility in natural gas under conditions of temperature and pressure of transport of natural gas. So, an experimental apparatus has been developed. The operating procedure is divided into three steps. The first step is to saturate a gas in sulphur. The second step is the trapping of sulphur in vapour phase contained in the saturated gas stream by reactive absorption after a flash. The final step is the analysis of the trapping solution by Gas Chromatography for trapped sulphur quantification. Once the operating procedure validated, the solubility of sulphur in carbon dioxide has been studied between 100 and 400 bar for two temperatures (363. 15 K and 333. 15 K). These experimental data allowed optimizing the CO2/S8 binary interaction coefficient of a thermodynamic model of sulphur deposition in natural gas developed in the LaTEP
Guillou-Largeteau, Isabelle. "Etude de substances de faible poids moléculaire combinant le dioxyde de soufre dans les vins blancs issus de vendange botrytisée : mise en évidence et importance du rôle de l'hydroxypropanedial." Bordeaux 2, 1996. http://www.theses.fr/1996BOR20425.
Zerouki, Alain. "Corrosion de revêtements d'alliages M-CrAlY par le soufre vapeur et le dioxyde de soufreTexte imprimé." Dijon, 1985. http://www.theses.fr/1985DIJOS043.
PALLARES, CYRIL. "Etude cinetique de l'oxydation du dioxyde de soufre par des oxydants forts dans l'eau tropospherique." Université Louis Pasteur (Strasbourg) (1971-2008), 1993. http://www.theses.fr/1993STR13165.
Bellut, Maxime. "Fonctionnement d'un réacteur catalytique à lit fixe arrosé en régime cyclique pour l'oxydation du dioxyde de soufre sur charbon actif." Vandoeuvre-les-Nancy, INPL, 1989. http://www.theses.fr/1989NAN10381.
LISFI, Abdellah. "Collisions entre atomes de rydberg excités par laser et agrégats de molécules polaires." Paris 13, 1992. http://www.theses.fr/1992PA132010.
Divol, Benoit Strehaiano Pierre. "La microbiologie des vins issus de raisins botrytisés au cours de l'élevage. Caractérisation des souches de Saccharomyces cerevisiae responsables de refermentation." Toulouse : INP Toulouse, 2005. http://ethesis.inp-toulouse.fr/archive/00000095.
Blanquart, Catherine. "Étude in vitro de la toxicite du dioxyde de soufre (SO₂) sur l'épithélium trachéal de mammifère." Paris 7, 1994. http://www.theses.fr/1994PA077010.
Vonder, Haar Theresa Anne. "Engineering eggshells for carbon dioxide capture, hydrogen production, and as a collagen source." Connect to resource, 2007. http://hdl.handle.net/1811/25099.
Title from first page of PDF file. Document formatted into pages: contains 37 p.; also includes graphics. Includes bibliographical references (p. 35-37). Available online via Ohio State University's Knowledge Bank.
Dif, Karim. "Approche expérimentale de l'action du dioxyde de soufre sur des protéines modèles par ESI-TOFMS et IRTF." Paris 6, 2004. http://www.theses.fr/2004PA066092.
Windholtz, Sara. "La réduction des sulfites en vinification et l’utilisation de levures à activité bioprotectrice : approche microbiologique, chimique et sensorielle." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0289.
Chemical preservatives in agri-food products are source of controversy, and oenology is no exception, especially with sulfur dioxide (SO2). This adjutant has been used for many years during the winemaking process for its antimicrobial, antioxidant and antioxydasic properties. Facing societal expectations and norm problems, winemakers are committed to produce wines with low sulfite or even zero sulfite contents. For winemakers, doing without it remains a risky decision, for which consequences on the fermentation process, the chemical and sensory characteristics remain poorly explored. The addition of non-Saccharomyces yeast as a bioprotection is currently considered as an alternative to the first sulfiting. This work aims to assess the consequences of removing sulfiting and using bioprotection, on the microbial diversity of prefermentary and fermentation stages, as well as on the chemical and sensory composition of wines.Without sulfiting, the populations of Metschnikowia pulcherrima and Hanseniaspora spp. increase during the prefermentary stages and the diversity indices are significantly lower due to the colonization of the environment by certain species, notably Hanseniaspora in red grape musts. In addition, sulfur dioxide mainly affects the fungal and yeast community according to OTUs abundance but also the diversity of native Saccharomyces cerevisiae strains, especially in white musts. The two species used in bioprotection, Torulaspora delbrueckii and to a lower extent Metschnikowia pulcherrima, colonize the grape must during the prefermentary stages, with a decrease of the relative abundances of fungal communities in comparison with the control without SO2, due probably to phenomena of competition to occupy the environment. This colonization effect is less important for over-ripened harvests. On the other hand, no negative effects are observed on Hanseniaspora spp. population levels.Under our experimental conditions in white must, absence of SO2 leads to oxidation of flavonoids in the must, an important color evolution and a lower glutathione concentration in the final white wines. The two bioprotection species consume oxygen in the grape must, which allows partial protection against oxidation and at the same time limiting acetic bacteria development. A preliminary study based on metabolomics analyzes shows significant differences between red wines without sulfites and wines produced with classic sulfiting at the vatting stage. From a sensory perspective, cooked black cherries notes and a freshness perception on the nose and in the mouth characterizes wines without SO2, while the sulfite wines are correlated with smoky notes. Finally, the early use of non-Saccharomyces yeasts in bioprotection significantly affects the chemical characteristics of wines with an increase of the fruity character of young wines at the sensory level, which nevertheless remains limited compared to the use of the same strains in mixed fermentation with Saccharomyces cerevisiae
Ameur, Chafik. "Traitement d'effluents gazeux contenant du dioxyde de soufre SO2 et des oxydes d'azote NOx par absorption et réactions chimiques dans une solution aqueuse d'acide sulfurique et de charbon actif." Vandoeuvre-les-Nancy, INPL, 2000. http://www.theses.fr/2000INPL016N.
Medawar, Wissam. "Etude physiologique et cinétique des levures du genre Brettanomyces dans un contexte oenologique." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT001G.
Elbouazzaoui, Sanaâ. "Effets du soufre sur des catalyseurs de type "piège à NOx" à base de baryum et (ou) d'oxydes réductibles." Poitiers, 2005. http://www.theses.fr/2005POIT2256.
Rea, Nathalie (1972. "Mise en évidence électrochimique du devenir et de l'action du SO2 dans les moûts et les vins rouges et blancs de Bordeaux." Aix-Marseille 1, 1999. http://www.theses.fr/1999AIX11069.
Osterman, My. "Carbon dioxide in agricultural streams : Magnitude and patterns of an understudied atmospheric carbon source." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355402.
Al-Ourabi, Hammoud. "Etude expérimentale de gaz azotés, du dioxyde de soufre et de l'ozone à l'échelle des écosystèmes de l'Afrique tropicale : application à l'estimation des dépôts secs gazeux dans le cadre du réseau IDAF." Toulouse 3, 2002. http://www.theses.fr/2002TOU30126.