Academic literature on the topic 'Matière organique – Origines – Composition chimique'
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Journal articles on the topic "Matière organique – Origines – Composition chimique":
TROCCON, J. L., and C. DEMARQUILLY. "La vinasse de mélasse de betterave pour les ruminants." INRAE Productions Animales 2, no. 4 (October 10, 1989): 245–48. http://dx.doi.org/10.20870/productions-animales.1989.2.4.4417.
Corniaux, Christian, N. Durand, Jean-Michel Sarrailh, and Hubert Guérin. "Composition chimique et dégradabilité enzymatique et in vitro d'espèces ligneuses arbustives utilisables par les ruminants dans les parcours extensifs de la Nouvelle Calédonie. I. Typologie." Revue d’élevage et de médecine vétérinaire des pays tropicaux 49, no. 1 (January 1, 1996): 60–67. http://dx.doi.org/10.19182/remvt.9549.
Corniaux, Christian, Hubert Guérin, and H. Steingass. "Composition chimique et dégradabilité enzymatique et in vitro d'espèces ligneuses arbustives utilisables par les ruminants dans les parcours extensifs de la Nouvelle-Calédonie. II. Equation de prédiction de la dégradabilité enzymatique et in vitro de la m." Revue d’élevage et de médecine vétérinaire des pays tropicaux 49, no. 2 (February 1, 1996): 158–66. http://dx.doi.org/10.19182/remvt.9534.
CLINQUART, A., C. BRUNDSEAUX, I. DUFRASNE, L. ISTASSE, and D. MICOL. "Utilisation des matières grasses chez les bovins à l’engraissement." INRAE Productions Animales 8, no. 1 (February 21, 1995): 29–42. http://dx.doi.org/10.20870/productions-animales.1995.8.1.4102.
Gilliot, Jean-Marc, Emmanuelle Vaudour, Joël Michelin, and Sabine Houot. "Estimation des teneurs en carbone organique des sols agricoles par télédétection par drone." Revue Française de Photogrammétrie et de Télédétection, no. 213 (April 26, 2017): 105–15. http://dx.doi.org/10.52638/rfpt.2017.193.
Horeau, V., S. Richard, R. Vigouroux, L. Guillemet, and P. Cerdan. "Variabilités spatiales et temporelles de la qualité physico-chimique et des invertébrés pélagiques des eaux de la retenue hydroélectrique de Petit Saut (Guyane française)." Revue des sciences de l'eau 18 (April 12, 2005): 109–26. http://dx.doi.org/10.7202/705579ar.
Abdulazeez, A., O. R. Madibela, and C. M. Tsopito. "Effect of substituting maize grain with cobs treated with combinations of urea and wood ash on chemical composition and in sacco degradability." Nigerian Journal of Animal Production 48, no. 5 (November 10, 2021): 239–44. http://dx.doi.org/10.51791/njap.v48i5.3207.
Kamoun, M., and A. Thewis. "Influence du mode de conditionnement d'un fourrage vert sur sa composition chimique, la digestibilité in vitro de la matière organique et la dégradabilité in sacco de l'azote dans le rumen." Reproduction Nutrition Développement 30, Suppl. 2 (1990): 159s—160s. http://dx.doi.org/10.1051/rnd:19900806.
AUFRÈRE, J., R. BAUMONT, L. DELABY, J. R. PECCATTE, J. ANDRIEU, J. P. ANDRIEU, and J. P. DULPHY. "Prévision de la digestibilité des fourrages par la méthode pepsine-cellulase. Le point sur les équations proposées." INRAE Productions Animales 20, no. 2 (June 7, 2007): 129–36. http://dx.doi.org/10.20870/productions-animales.2007.20.2.3445.
DEMARQUILLY, C. "Facteurs de variation de la valeur nutritive du maïs ensilage." INRAE Productions Animales 7, no. 3 (June 24, 1994): 177–89. http://dx.doi.org/10.20870/productions-animales.1994.7.3.4168.
Dissertations / Theses on the topic "Matière organique – Origines – Composition chimique":
Marrocchi, Yves. "Incorporation des gaz rares dans la matière organique primitive du système solaire." Phd thesis, Institut National Polytechnique de Lorraine - INPL, 2005. http://tel.archives-ouvertes.fr/tel-00258016.
Piani, Laurette. "Origine des éléments volatils dans le Système Solaire : la matière organique et les argiles des chondrites." Phd thesis, Museum national d'histoire naturelle - MNHN PARIS, 2012. http://tel.archives-ouvertes.fr/tel-00770244.
Thlaijeh, Siveen. "Characterization of organic matter by laser-assisted mass spectrometry : application to paleontology and exobiology." Thesis, Université de Lille (2018-2021), 2021. https://pepite-depot.univ-lille.fr/ToutIDP/EDSMRE/2021/2021LILUR066.pdf.
The origin of organic matter on Mars will be investigated with ExoMars’ “Rosalind Franklin” rover using several analytical instruments including the Mars Organic Molecular Analyzer (MOMA). The MOMA instrument combines laser desorption-ionization mass spectrometry (LDI-MS) and gas-chromatography mass spectrometry (GC-MS) to analyze sub-surface samples. The similarity of the LDI-MS of MOMA with our LDI-MS / L2MS (two-step laser mass spectrometry) instrument has encouraged us to characterize organic matter from different types of samples, with the goals of providing new methodology for microscale molecular characterization of early life on Earth and to support future investigations on Mars.First, we developed a new-side injection ion source for our existing hybrid (radiofrequency/time-of-flight) mass spectrometer enabling transmission and reflection microscopy and chemical imaging in L2MS and LDI-MS with a lateral resolution down to 3 µm.Second, characterization of reference molecules was carried with L2MS and LDI-MS to help chemical identification of different types organic matter. These included a tryptophan derivative (biotic/abiotic amino acid), hexylthiophene (proxy for sulfurized hydrocarbons), cholestane (eukaryote biomarker), tocopherol (from photosynthesizers) and a porphyrin (chlorophyll derivative). Thus, we provide insight into the sensitivity of the method for these important classes of molecules, and into their fragmentation patterns.Third, a sedimentary rock from the Jurassic paleolagoon of Orbagnoux was analyzed as a proxy for diagenetically-sulfurized microbial organic matter. This sample was chosen following the recent detection of sulfurized molecules on Mars. Chemical characterizations of different samples of Orbagnoux rock (fresh rock and polished slice) and its corresponding sub-fractions extracted from the sedimentary rock (soluble extracts, maltene and kerogen) were performed using L2MS and LDI. This gives access to organic and inorganic molecular information of various chemical classes of interest such as polycyclic aromatic hydrocarbons, oxygenated, thiophenic, and nitrogenated hydrocarbons, calcium carbonate/iron sulfide clusters, and metals such as Ni+ or VO+ that point to the preservation of geoporphyrins.Fourth, a modern Dammar resin and four fossil resins (ambers) were analyzed in LDI-MS to test the technique capability to provide insights into plant-derived fossil biopolymers, including their maturity grade and/or botanic type. Clear differences in hydrocarbon fragment patterns were observed in mass spectra and analyzed with principal component analysis
Gobé, Valérie. "Matière organique complexe du sol ; structure et rôle dans les processus d'humification du carbone xénobiotique." Poitiers, 1998. http://www.theses.fr/1998POIT2316.
Liénart, Camilla. "La matière organique particulaire dans les systèmes côtiers : composition, dynamique et forçages à l'échelle multi-systémique." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0255/document.
Pelagic coastal systems are characterized by multiple inputs of particulate organic matter (POM) from autochthonous (phytoplankton) and allochthonous (continental, benthic) origin whose spatial and temporal variability can be high. The aims of my PhD were to 1) quantify POM composition in pelagic coastal systems, 2) determine the forcings to its spatio-temporal dynamics and 3) investigate the link between bacteria and POM composition. This study was conducted on twelve systems (estuary, lagoon, bays, rias, littoral) distributed over the three maritime facades of France by combining the use of elemental and isotopic ratios (composition), fatty acids (POM-bacteria link) and multivariate analysis (forcings).At multi-systems and/or intra-system scale, two main gradients are observed:- an inshore (higher continental and benthic contribution) - offshore gradient (phytoplanktonic POM) mainly related to hydrodynamics and sedimentary hydrodynamics (river flow, resuspension of benthic material) and to the proximity to allochthonous sources- a South (POM related to diazotrophy) – North (absence of this POM) gradient, associated to the trophic status (oligo vs meso/eutrophy) of the studied systems.The seasonality of spatio-temporal dynamics of POM composition is highly variable depending on the station. It is in general higher near the coast and lower offshore and upstream in the studied estuary. This dynamic is also strongly associated to sedimentary hydrodynamics.Finally, this study highlight that bacterial biomass is mainly associated to continental and benthic POM
Bigot, Marianne. "Biogeochimie de la matiere organique dans l'estuaire du huang he et en mer de bohai." Paris 6, 1988. http://www.theses.fr/1988PA066083.
Kouakoua, Ernest. "La matière organique et la stabilité structurale d'horizons de surface de sols ferrallitiques argileux : effet du mode de gestion des terres." Nancy 1, 1998. http://www.theses.fr/1998NAN10016.
Mortillaro, Jean-Michel. "Caractérisation et dynamique de la matière organique du fleuve et des plaines d'inondation du bassin central amazonien." Paris, Muséum national d'histoire naturelle, 2012. http://www.theses.fr/2012MNHN0003.
River ecosystems have a key role in the processes, which control the storage of atmospheric CO2. However, because of strong spatial and temporal variabilities in the sources of organic matter (OM), their relative contribution to the carbon dynamics of large river ecosystems is not fully understood. The present work aimed to characterize the sources of OM in the central Amazon basin. The fatty acids (FA) and stable carbon and nitrogen isotopic (δ13C, δ15N) compositions of OM were investigated in five floodplains (locally called Várzea), the Amazon River and four of its main tributaries (Solimões, Negro, Madeira and Tapajós). The OM analyzed includes macrophytes (Eichornia sp. , Paspalum repens, Pistia stratiotes and Salvinia auriculata), plankton samples, suspended particulate organic matter (SPOM), sediments and soils from the flooded forest. A seasonal characterization of this OM, according to the annual oscillation in the hydrological cycle, indicates a strong autotrophic production from cyanobacteria in Várzea during the drought season. At this season, a transfer of OM, resulting from cyanobacteria and decomposition of macrophytes, has been evidenced from the Várzea to the rivers. However, these plants, which use different pathways of photosynthesis, do not contribute equally to OM and to the food web. Thus, a degradation experiment showed the decomposition dynamics of these macrophytes and the role of micro-organisms. The characterization of OM sources, their spatial and seasonal variabilities, the processes involved in its degradation as well as its utilization by consumers, indicate that the OM produced in Várzea constitute the major source of respired carbon in rivers from the Amazon basin and results from phytoplanktonic production
Rouibah, Mohamed. "Relations entre la composition chimique des eaux interstitielles et les caractéristiques des dépots récents sur la marge rhodanienne (Golfe du Lion) : mécanismes de digénèse précoce de la matière organique." Perpignan, 1993. http://www.theses.fr/1993PERP0154.
Biron, Katarzyna. "The Molecular structure of the Insoluble Organic Matter (MOI) deposited from organic plasma : Comparison with IOM isolated from carbonaceous meteorites." Thesis, Paris, Muséum national d'histoire naturelle, 2016. http://www.theses.fr/2016MNHN0004/document.
Carbonaceous meteorites are the most primitive objects of the solar system. They contain up to 4% of carbon, mainly occurring as insoluble organic matter (IOM). This IOM contains key information about the organo-synthesis processes taking place in the Solar System, which are so far poorly understood. A statistical model was recently proposed for the IOM molecular structure along with a possible synthesis pathway for its hydrocarbon backbone (Derenne and Robert, 2010).The first aim of this work was to test experimentally this pathway using an organic plasma as a source of CHx radicals. This device allowed the formation of both soluble and insoluble OM. The IOM was analyzed through the same techniques as those previously used for the chondritic IOM, revealing numerous similarities between both materials and thus supporting the proposed pathway. Moreover, NanoSIMS analyses revealed large isotopic variations at a sub-micrometric spatial resolution that are commensurable with those observed in chondritic IOM.Then, the source of heteroatoms (N and O) into the IOM was experimentally investigated through the addition of heteroelement-containing precursors to the hydrocarbonaceous radicals. As for nitrogen, two types of precursors were considered: hexylamine as a source of nitrogen hydrides and N2. Although both precursors led to nitrogen incorporation in the IOM, nitrogen hydrides seem to be more relevant based on the nitrogen speciation. Two types of experiments were performed to investigate the potential source of oxygen in the chondritic IOM. They were designed to address the two main scenarios proposed in the literature to account for the origin of the oxygen in the chondritic IOM: either aqueous alteration on the asteroidal parent body or O incorporation during the organo-synthesis in the primitive solar nebula. When the aqueous alteration is mimicked, the chemical composition of the SOM and IOM makes this pathway a reasonable source of the chondrite oxygen moieties. In contrast, no evidence for direct incorporation of O from OH radicals could be brought
Books on the topic "Matière organique – Origines – Composition chimique":
Ontario. Esquisse de cours 12e année: Le droit canadien et international cln4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Étude de l'alimentation et de la nutrition hfa4m cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Atelier d'écriture fae4o cours ouvert. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Histoire de l'Occident et du monde chy4u. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Géométrie et mathématiques discrètes mga4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Français des affaires faf4o. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: L'église et la culture hre4m. Vanier, Ont: CFORP, 2007.
Ontario. Esquisse de cours 12e année: Politique canadienne et mondiale cpw4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: The writer's craft eac4c cours précollégial. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Études interdisciplinaires un monde sans frontières idc4o cours ouvert. Vanier, Ont: CFORP, 2002.