Search results for "O2"

showing 10 items of 1115 documents

Experimental and theoretical study of line mixing in methane spectra. III. The Q branch of the Raman nu(1) band

2000

International audience; The shape of the nu(1) Raman Q branch of CH4 perturbed by Ar and He at room temperature has been studied. Stimulated Raman spectroscopy (SRS) experiments have been made in the 2915-2918 cm(-1) spectral region for total pressures from 0.4 to 70 atm and mixtures of approximate to 5% CH4 with He and Ar. Analysis of the spectra demonstrates that the shape of the Q branch is significantly influenced by line mixing and much narrower than what is predicted by the addition of individual line profiles. For the first time, a model is proposed for the calculation and analysis of the effects of collisions on the considered spectra. In this approach, the rotational part of the re…

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]SUM-RULESNITROGEN[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]PERTURBER DEPENDENCIESDENSITYPRESSURE-SHIFT COEFFICIENTS(CH4)-C-12CO2 INFRARED-SPECTRANU(3) BANDTEMPERATUREPARAMETERS
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Réseaux métalliques pour le couplage dans des guides en dioxyde de titane

2016

National audience; Nous montrons la fabrication de réseaux métalliques enterrés entre deux couches de dioxyde de titane. En utilisant un supercontinuum, nous démontrons expérimentalement une efficacité de couplage supérieure à -8 dB pour une bande passante à 3 dB supérieure à 80 nm.

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics][PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics][ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics]TiO2couplage par réseaux
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Réponses adaptatives du Pois protéagineux à une perturbation de la fixation symbiotique d'azote en relation avec le métabolisme carboné

2013

[SDE] Environmental Sciences[SDV]Life Sciences [q-bio]RacinesPisum sativum L.Marquage isotopique 13CAblationMutants hypernodulantsnodositésFixation symbiotique du N2[SDV] Life Sciences [q-bio]Teneur en CO2 faible ou élevéeForce de puits pour le carbone15N Isotopic labeling[SDE]Environmental SciencesAssimilation et répartition du C
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Etude de l'évolution de la pollution atmosphérique par le CO2 dans la ville de Cotonou utilisant la signature isotopique des graminées C4

2007

8 pages; International audience

[SDE] Environmental Sciencescarbon isotopic compositionmilieu urbain[SDE.MCG]Environmental Sciences/Global Changes[SDV]Life Sciences [q-bio][ SDV.SA.SDS ] Life Sciences [q-bio]/Agricultural sciences/Soil study[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil studygraminée C4[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistrypollutionmapping[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil studyComputingMilieux_MISCELLANEOUSCOTONOU[ SDU.STU.GC ] Sciences of the Universe [physics]/Earth Sciences/Geochemistrycomposition isotopique en carbone[SDE.ES]Environmental Sciences/Environmental and SocietyC4 grass[SDV] Life Sciences [q-bio][ SDE.MCG ] Environmental Sciences/Global Changes[SDE.MCG] Environmental Sciences/Global Changes[SDE]Environmental SciencescartographieCO2[SDE.ES] Environmental Sciences/Environmental and Society[ SDE.ES ] Environmental Sciences/Environmental and Societyurban area
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Mesure des émissions de CO2 en milieu urbain : étude du flux et de ses variations à l’aide des isotopes du carbone.

2013

7 pages; International audience; Dans la ville de Dijon, les émissions de CO2 ont été mesurées. Les variations de la concentration atmosphériquesen CO2 et de la signature isotopiques du CO2 atmosphérique ont permis de mettre en évidence un dôme urbain au dessus dela ville. Ce dôme présente un double mécanisme lié au trafic et à la respiration du sol. Le niveau de base des dômes sesitue sur une droite de mélange (ou une courbe) ayant pour origine les valeurs de la concentration (370 ppm) et du d13C (-8‰) mesurées en zone rurale ainsi que la droite de mélange du trafic. La concentration et la signature isotopique dépendaussi de la respiration du sol. D’autre paramètre comme la température et …

[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/GeochemistryCO2 atmosphérique[ SDU.STU.GC ] Sciences of the Universe [physics]/Earth Sciences/Geochemistry
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Phenotypic and genotypic characterization of extensive dermal melanocytosis: co24

2016

International audience

[SDV.MHEP] Life Sciences [q-bio]/Human health and pathology[ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathologyCO24melanocytosisComputingMilieux_MISCELLANEOUS
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Study and characterization of the "Viable but non-culturable" state in Saccharomyces cerevisiae

2013

The viable but not culturable (VBNC) state has been studied in detail in bacteria. Bycontrast the VBNC state in other microorganisms, including particularly eukaryotes, has receivedmuch less attention. However, it has been suggested that in wine, Brettanomyces yeast cells mayenter a Viable But Not Culturable State, in particular in the presence of high, sulfur dioxide(SO2) concentration.To provide conclusive evidences for the existence of a VBNC state in yeast, especially in S.cerevisiae as a model organism, the capacity of different S cerevisiae strains to become viableand not cultivable after a sulfite stress with various concentrations of SO2 was studied by flowcytometry (FCM) using fluo…

[SDV.SA]Life Sciences [q-bio]/Agricultural sciences[ SDV.BV ] Life Sciences [q-bio]/Vegetal Biology[SDV.SA] Life Sciences [q-bio]/Agricultural sciencesSaccahromyces cerevisiaeÉtat viable mais non cultivable[SHS.ECO]Humanities and Social Sciences/Economics and FinanceCytométrie de fluxViable but non-culturableVin[SDV.BV]Life Sciences [q-bio]/Vegetal Biology[ SHS.ECO ] Humanities and Social Sciences/Economies and financesStress SO2[SDV.BV] Life Sciences [q-bio]/Vegetal Biology[SHS.ECO] Humanities and Social Sciences/Economics and Finance[ SDV.SA ] Life Sciences [q-bio]/Agricultural sciences
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Sol et changement climatique

2009

[SDV] Life Sciences [q-bio][ SDV ] Life Sciences [q-bio]gaz à effet de serre évolution des sols[SDV]Life Sciences [q-bio]stock organiqueCO2sols
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Impact of environmental factors on grapevine physiology and responsiveness to elicitor-induced resistance against Plasmopara viticola

2012

[SDV] Life Sciences [q-bio][SDE] Environmental SciencesPlasmopara viticolaimage analysisdowny mildewH2O2[SDV]Life Sciences [q-bio][SDE]Environmental Sciences[SDV.BV]Life Sciences [q-bio]/Vegetal Biology[SDV.BV] Life Sciences [q-bio]/Vegetal Biologyresistance tests
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Estimer le volume de la microflore sera bientôt possible

1998

[SDV] Life Sciences [q-bio][SDE] Environmental Sciences[SDV]Life Sciences [q-bio][SDE]Environmental SciencesCO2
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