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Статті в журналах з теми "Extraction racinaire de l'eau"
Boujamlaoui, Zakaria, Thierry Bariac, Philippe Biron, Laurent Canale, and Patricia Richard. "Profondeur d'extraction racinaire et signature isotopique de l'eau prélevée par les racines des couverts végétaux." Comptes Rendus Geoscience 337, no. 6 (April 2005): 589–98. http://dx.doi.org/10.1016/j.crte.2005.02.003.
Повний текст джерелаBoussahel, R., S. Bouland, M. Baudu, and A. Montiel. "Extraction en phase solide de certains herbicides présents dans l'eau." Journal européen d’hydrologie 33, no. 1 (2002): 75–82. http://dx.doi.org/10.1051/water/20023301075.
Повний текст джерелаTella, A. K., M. E. Isaac, D. S. Solomon, K. J. Tarhule, S. J. Nkwuda, J. Agashi, and P. A. Ewache. "Effect of Different Onion Skin Extracts on Physicochemical, Microbial and Sensory Properties of Grilled Chicken." Nigerian Journal of Animal Production 49, no. 4 (February 10, 2023): 106–13. http://dx.doi.org/10.51791/njap.v49i4.3708.
Повний текст джерелаLedhem, A., R. M. Dheilly, M. Benmalek, and M. Queneudec. "Minimisation de la sensibilité à l'eau de composites cimentaires argile-schistes-bois." Canadian Journal of Civil Engineering 27, no. 1 (February 15, 2000): 101–11. http://dx.doi.org/10.1139/l99-070.
Повний текст джерелаKouakoua, E., M. C. Larré-Larrouy, B. Barthès, P. L. de Freitas, C. Neves, G. H. Sala, and C. Feller. "Relations entre stabilité de l'agrégation et matière organique totale et soluble à l'eau chaude dans des sols ferrallitiques argileux (Congo, Brésil)." Canadian Journal of Soil Science 79, no. 4 (November 1, 1999): 561–69. http://dx.doi.org/10.4141/s98-056.
Повний текст джерелаMiall, Andrew D. "Geoscience of Climate and Energy 13. The Environmental Hydrogeology of the Oil Sands, Lower Athabasca Area, Alberta." Geoscience Canada 40, no. 3 (October 31, 2013): 215. http://dx.doi.org/10.12789/geocanj.2013.40.016.
Повний текст джерелаFournier, J. B., M. El'Hourch, and J. Fournier. "Evaluation d'une méthode d'analyse de pesticides dans l'eau par chromatographie en phase gazeuse couplée à la spectrométrie de masse après extraction en phase solide." Cahiers de l'Association Scientifique Européenne pour l'Eau et la Santé 4, no. 1 (1999): 43–52. http://dx.doi.org/10.1051/asees/19990401043.
Повний текст джерелаMarquis, François, Claude Camiré, and Marius Lachance. "Distribution des cations basiques et de l'aluminium dans la solution de sol de l'horizon humifère d'une érablière fertilisée: représentativité des extraits de sol saturé à l'eau." Canadian Journal of Soil Science 79, no. 1 (February 1, 1999): 47–55. http://dx.doi.org/10.4141/s97-080.
Повний текст джерелаDe Goede, Ron G. M., and Bart Verschoor. "The nematode extraction efficiency of the Oostenbrink elutriator-cottonwool filter method with special reference to nematode body size and life strategy." Nematology 2, no. 3 (2000): 325–42. http://dx.doi.org/10.1163/156854100509204.
Повний текст джерелаArogbodo, J. O., S. O. Olowookere, F. O. Igbe, and I. A. Adebayo. "Evaluation of unripe peels of plantain (Musa paradisiacal L.) as high quality feedstuff for livestock in Nigeria." Nigerian Journal of Animal Production 48, no. 3 (March 6, 2021): 111–21. http://dx.doi.org/10.51791/njap.v48i3.2960.
Повний текст джерелаДисертації з теми "Extraction racinaire de l'eau"
Albasha, Rami. "Evaluation de la productivité de l’eau d’irrigation par la modélisation : le cas du maïs sous goutte-à-goutte enterré en sol limoneux profond." Electronic Thesis or Diss., Paris, AgroParisTech, 2015. http://www.theses.fr/2015AGPT0025.
Повний текст джерелаThe "more crop per drop" paradigm is behind considerable efforts to increasing the productivity of water consumed in irrigated agriculture. In this context, the evaluation of the agronomic performances of irrigation techniques and their ability to reduce the water consumption is a prerequisite for optimizing water use in irrigated agriculture. This thesis explores the potentials of Subsurface Drip Irrigation (SDI) within a modeling framework to evaluate its agronomic performance under various soil and climatic contexts.Many crop models allow today the prediction of crop yields as a function of, inter alia, the climatic conditions, the type of soil, the availability of water, of nutrient, and agricultural practices. These crop models usually couple the water and solute transfer processes in the soil to crop development. The water uptake of plant roots plays herein a key role of joining the processes in soil to those of the plant.Despite the strong spatial and temporal variability of the activity of root uptake, this activity is often presented in crop models with empirical “static” functions: the spatial distribution of water uptake depends on a predefined distribution of root density, but not on the type of irrigation. These empirical functions are found to be suitable for the simulation of root uptake when water is brought to the surface (sprinkler irrigation, gravity, etc.). However, their legitimacy under drip irrigation remains to be demonstrated.This thesis evaluates the performance of the empirical approaches for modeling root water uptake under drip irrigation, with the ultimate objective of introducing a simple crop model suitable for this technique.From the one hand, the role of the function defining the spatial distribution of root density is explored. Numerical simulations supported by field experiments allowed analyzing the phenomenon of "compensatory water uptake", which is exacerbated under localized irrigation. Considering this phenomenon in modeling was necessary for adequately predicting water consumption of the crop, the distribution of water in the soil, and especially drainage fluxes under SDI.From the other hand, the findings from the first study are taken into account in the development of SDICM, Subsurface Drip Irrigation Crop Model. SDICM is couples bidirectional water transfer process in the soil to crop growth. This model was confronted with field observations which allowed putting forward the importance of root water uptake process in the prediction of water profiles in cropped soils.Finally, an application example was conducted where the water productivity of maize under different pedo-climatic conditions was assessed using SDICM and a capacitive type model. The purpose of the comparison is to highlight the importance of simulating bidirectional soil-water transfer in the context of SDI
Vercambre, Gilles. "Modelisation de l'extraction de l'eau par une architecture racinaire en condition de disponibilite hydrique non uniforme. Etude sur pechers en verger." Paris, Institut national d'agronomie de Paris Grignon, 1998. http://www.theses.fr/1998INAP0046.
Повний текст джерелаPetigny, Loïc. "L'eau dans tous ses états comme solvant alternatif pour l'éco-extraction du végétal." Thesis, Avignon, 2014. http://www.theses.fr/2014AVIG0252.
Повний текст джерелаThe use of innovative extraction technologies is of outmost importance in the cosmetic industry. This process step is consuming large amounts of energy and materials. Furthermore, some solvents used are not benign. Some of them are from oil products. In order to better preserve the environment and human health, we must find alternatives to solvents and conventional extraction methods. To pursue this goal, we will use water as solvent and innovative technologies to create new extraction methods of natural products. The work presented in this thesis first establishes a review of extraction methods. All those methods, old as well as new ones, are specific in terms of target matrix or extracted molecules. Then, we focused on a mature extraction method: hydrodistillation. The simultaneous extraction and separation of water soluble compounds as well as volatile compounds from boldo leaves (Peumus boldus, Mol.), is undertaken with the help of microwaves. The parameters optimization leads to a pilot scale-up. The intensification and continuous mode transition of the ultrasound assisted extraction of boldo leaves is then studied. Afterwards, we studied the maturing method of surfactant addition to water. This is in order to extract hydrophilic and hydrophobic compounds of rosemary (Rosmarinus officinalis L.). Finally, we explored an extraction method still in R&D. This method use only water in order to extract hydrophobic compounds of sweet orange peels ( Citrus sinensis L.) with a microwave device
Bobille, Hélène. "Modulation de l’exsudation racinaire de composés azotés chez les Fabacées et réponse aux stress hydriques." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0067.
Повний текст джерелаLegume roots release substantial amounts of nitrogen (N) into the soil. They can help to reduce the use of synthetic N fertilisers in cropping systems. A part of this N derives from root exudates, mainly in amino acids (AAs) forms, that are highly suspected to regulate the abundance of microbial community in the rhizosphere. This may impact plant nutrition and resistance to abiotic stress. However, exudated AAs have not been unequivocally quantified, due to interaction with rhizosphere microorganisms and mineral particles. We hypothesized that root AA exudation could change significantly according to the substrate type, the plant growth and water availability. In the present work, we have developed a methodology using unsterilized soil in order to measure the rhizosphere AA fingerprint (RAAF), as the net result of interactions between AA exudation and rhizospheric environment. The RAAF was measured in Medicago truncatula grown in either sterilized sand or unsterilized soil, at three vegetative plant stages; and in Pisum sativum grown in unsterilized soil, under either a water deficit or a water excess. P. sativum plants were stem-labeled with 15N, in order to assess root 15N-AA released in the rhizosphere. The RAAF increased substantially during plant growth, showing a significant quantitative and qualitative plant growth dependent effect. Water deficit significantly modified RAAF with more recently assimilated N, proline, alanine and valine released in the rhizosphere under water deficit. This work contributed to highlight factors affecting RAAF and to better understand ecophysiological aspects of N rhizodeposition of legumes
Srayeddin, Iyad. "Transferts hydriques sol-plante et extraction racinaire : une approche de la spatialisation des prélèvements hydriques par tomographie de résistivité électrique." Avignon, 2009. http://www.theses.fr/2009AVIG0617.
Повний текст джерелаA better knowledge of the functioning of water uptake by plant roots is necessary in order to optimize agricultural water resources management. To this respect, the understanding of the acquisition of soil water by root systems is an important objective of agronomical research. However, characterization of water transfer in the soil-plant system and the spatialization of water uptake at the field scale are still problematic and challenging. Soil - plant environment is a complex system, varying in time and space. The depletion of soil water in the rooted zone is controlled by soil, plant and climatic factors. In order to spatialize the water uptake at the plant’s population scale, methodologies and proxy variable allowing an estimation of water extraction and its variability are highly needed. This would reflect simultaneously the overall and spatial heterogeneity of the population and its growing medium. To this aim, we used the Electrical Resistivity Tomography (ERT) as an alternative approach to the classical methods of water measurements (local soil water balance) for estimating root water uptake. ERT results in a spatial estimation of soil electrical resistivity, the latter being related to the variability of soil water content. 2D or 3D imaging of soil electrical resistivity and its variations with time are related to water content variations as well as water extraction distribution in soil. This experimental study aims at evaluating ERT for spatializing water uptake at the field scale with various plants and different levels of water availability. Three types of plant (Maize, Sorghum and Broad bean) were selected because they exhibit different root systems morphologies and /or and water extraction capacities. These crops were subjected in the field to three levels of water availability ranging from rain fed to full irrigation. Water extraction and its variability, at the field scale, was estimated firstly by a “direct” approach which empirically links the temporal difference in soil electrical resistivity and the uptake. Secondly, an “indirect” more general approach, using in situ calibration between soil electrical resistivity and water content into a spatialized water balance calculation has been used. The water uptake images resulting from these estimations show high spatial and temporal variation of water uptake. The estimation of root water uptake at field scale by ERT is thus possible. However, this spatial estimation can be more or less severely restricted by different constraints which are related to: ERT sensitivity (decrease of ERT sensitivity with depth, accuracy of the in situ water content-resistivity calibration relationship: RMSE ~ 0. 03 cm3. Cm-3), the type of ERT measurement setup (decrease of resolution with depth with a surface array) and to the environmental conditions (problems for ERT measurements in dry and clay soil: decrease of soil-electrode contact and increase of soil heterogeneity due to soil cracking). This work contributes to a first methodological step, showing the possible use of ERT for spatializing and quantifying the spatial variations of root water uptake, if soil hydrodynamic data are available. More globally, this work traces new developments in the understanding of the spatial heterogeneity of root water uptake in relation with soil properties and root system growth
Tournier, Pierre-Henri. "Absorption de l'eau et des nutriments par les racines des plantes : modélisation, analyse et simulation." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066030/document.
Повний текст джерелаIn the context of the development of sustainable agriculture aiming at preserving natural resources and ecosystems, it is necessary to improve our understanding of underground processes and interactions between soil and plant roots.In this thesis, we use mathematical and numerical tools to develop explicit mechanistic models of soil water and solute movement accounting for root water and nutrient uptake and governed by nonlinear partial differential equations. An emphasis is put on resolving the geometry of the root system as well as small scale processes occurring in the rhizosphere, which play a major role in plant root uptake.The first study is dedicated to the mathematical analysis of a model of phosphorus (P) uptake by plant roots. The evolution of the concentration of P in the soil solution is governed by a convection-diffusion equation with a nonlinear boundary condition at the root surface, which is included as a boundary of the soil domain. A shape optimization problem is formulated that aims at finding root shapes maximizing P uptake.The second part of this thesis shows how we can take advantage of the recent advances of scientific computing in the field of unstructured mesh adaptation and parallel computing to develop numerical models of soil water and solute movement with root water and nutrient uptake at the plant scale while taking into account local processes at the single root scale
BARTHES, LAURE. "Role du nitrate sur le transfert de l'eau et des composes azotes du xylene de plantules de mais et de ble en condition de poussee racinaire applications agronomiques." Paris 11, 1994. http://www.theses.fr/1994PA112448.
Повний текст джерелаGuérin, Loïc. "Devenir des polluants inorganiques contenus dans les résidus de combustion des déchets ménagers : spéciation et élaboration de tests de mobilité en vue de leur stockage ou de leur valorisation." Toulon, 2000. http://www.theses.fr/2000TOUL0005.
Повний текст джерелаOne ton of incinerated municipal solid wastes give about 300kg of bottom ash and 50kg of APC (Air Pollution Control) residues which are mainly constituted of oxides and silico-aluminate compounds. A non-negligible part of these residues are soluble compounds (NaCl, KCl, CaCl2, CaSOa,. . . ) and heavy metals (Cd, Pb, Zn. . . . ) which are harmful elements in view of their disposal or valorisation. We first characterized the composition of the residues and the physico-chemical mechanisms in case of lixiviation. Sequential extractions have been used to define the speciations of heavy metals and major constituents. Heavy metals are mainly-associated with calcite and anhydrite and these mineral compounds are soiubilised in acid conditions. These extractions were associated with pH-stat extractions to predict the behaviour of the residues in time. We then used simple scenarios and simulations : in the case of n on-exceptional conditions of disposal, the chlorides ate the first compounds which are released to the environment. The carbonatation phenomenon in open air quickly reduced (some months) the pH of the residues leachate to about pH=8. 5, which is fortunately, in most cases the pH of the minimum solubilisation of heavy metals. A kinetic approach confirms this result. The rain is then the only possible source of protons and the decrease of the leachates pH proceeded very slowly (about hundreds of thousand years). The remaining metals, associated with oxides or inside the alumino-silicate mould, cannot be released to the environment, except under special conditions of disposal
Bakti, Jos. "Récupération d'acides malique et tartrique par extraction liquide-liquide. Application à la dépollution d'effluents agro-industriels." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT009G.
Повний текст джерелаSmagghe, Freddy. "Séparation des acides tartrique et malique par extraction liquide-liquide. Valorisation et dépollution des effluents viti-vinicoles." Toulouse, INPT, 1991. http://www.theses.fr/1991INPT040G.
Повний текст джерелаКниги з теми "Extraction racinaire de l'eau"
Dean, John R. Extraction methods for environmental analysis. Chichester: John Wiley, 1998.
Знайти повний текст джерелаChiffoleau, Jean-François. Dosage de certains métaux traces: (Cd, Co, Cu, Fe, Ni, Pb, Zn) dissous dans l'eau de mer par absorption atomique après extraction liquide-liquide. Plouzané, France: Ifremer, 2002.
Знайти повний текст джерелаEssai n° 120: Comportement de dissolution - extraction des polymères dans l'eau. OECD, 2000. http://dx.doi.org/10.1787/9789264069893-fr.
Повний текст джерелаDean, John R. Extraction Methods for Environmental Analysis. Wiley & Sons, Incorporated, John, 2000.
Знайти повний текст джерела