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Artykuły w czasopismach na temat "Méthode DMSL"
Page, Cheryl, i Jessica Rebeiro. "Évaluation de l’efficacité d’un programme de formation sur l’administration par bolus intraveineux de cellules souches hématopoïétiques cryoconservées". Canadian Oncology Nursing Journal 33, nr 2 (28.04.2023): 207–14. http://dx.doi.org/10.5737/23688076332207.
Pełny tekst źródłaRozprawy doktorskie na temat "Méthode DMSL"
Stańczak, Magda. "Behaviour of additively manufactured metallic structures under blast loading". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0073.
Pełny tekst źródłaThe additive manufacturing technique allows for studies of metallic structures with complex geometry at a laboratory scale. The application of novel structures can be especially beneficial for improving the capacity of energy absorption and blast mitigation. In the presented thesis, the role of the topology of additively manufactured AlSi10Mg aluminum structures of several exemplary cellular structures (i.e., honeycomb, auxetic, lattice, and foam) is studied at static and blast compression. Furthermore, the relationship between the relative density and the deformationresponses of the structures, as well as the energy absorption capacities is analyzed. To investigate the influence of the manufacturing process conditions on the mechanical properties, the material behavior of the printed AlSi10Mg aluminum alloy is studied. For completeness, an analysis of the deformed microstructure is also conducted. The obtained results prove the complexity of the material behavior. Therefore, a phenomenological model based on the modified Johnson-Cook approach is proposed. The developed model describes the obtained characteristics of the printed alloy with much better accuracy than the classical constitutive function. The finite element simulations conducted in LS-DYNA software are used to investigate the deformation mechanisms of the structures in detail. The results are consistent with the analytical calculations and the experimental observations. The final responses indicate that by selecting the appropriate topological parameters, it is possible to affect the performance of structures significantly and thus to improve their energy absorption properties. The resulting experiments and their modeling show that the discussed material and the manufacturing technology have a promising potential
Ambrosio, Sophie d'. "Les intéractions d'échange dans le semi-conducteur magnétique dilué ZnO.Co". Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4304/document.
Pełny tekst źródłaThe work performed on ZnO:Co enables a better understanding of exchange constants. The question of the spin-spin interactions in the Diluted Magnetic Semiconducteur (DMS) is studied from both theoretical and experimental approaches. On the théoretical side, a exchange constants for all the II-VI series doped Mn et CO. On the experimental side, the use of three techniques, Inelastic Neutron Scattering (INS), Electron Paramagnetic Resonance (EPR), and the Magnetization Steps (MST) method, has made it possible to establish, for the first time, the ten largest exchange constants in ZnO:Co.The INS experiments show, in direct way, astrong spatial anisotropy of the nearest enighbor exchange integral J(1)=-25.6 K and J(2)=-8.5 K. This result can be explained, in part, by the presence, in the wurtzite structure, of a looped exchange path which involves two distinct anions and is ferromagnetic. To justify this explanation, our model was expanded to cover the entire II-VI series doped Mn and Co. The concurrent results, for the complete series, between the known experimental data and the theoretical exchange values permit the justification and the validation of our hypotheses.The measures performed by EPR and MST enable, for their part, the establisment of the distant neighbor exchange constants. the two techniques give complementary information, and make it possible to directly observe the exchange constants of ZnO:Co going from the third to the tenth largest value, J(3)=-1.07 K ,J(4)=-0.38 K , J(5)=+0.35 K , J(6)=+0.17 K , J(7)=-0.13 K , J(8)=-0.04 K , J(9)=-0.03 K , |J(10)|=0.01 K
Brabant, Frédéric. "Physical and biogeochemical controls on the DMS/P/O cycle in Antarctic sea ice". Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209587.
Pełny tekst źródłaSUMMARY - It has recently been demonstrated that Antarctic sea ice recently demonstrated plays a potentially significant role in the dynamics of climatically significant gases (amongst which dimethylsulphide or DMS) in Polar Regions. This research work has initially focused on the development of a reliable method for the determination of dimethylsulphoxide (DMSO) within sea ice, avoiding interferences generated by DMS production within the sample in response to the osmotic shock caused by melting. A sequential determination procedure of DMS, dimethlsulphoniopropionate (DMSP) and DMSO on the same ice sample has been developed and used on a large amount of samples in the present work. Data presented in this research project have been collected in the framework of two integrated sea ice observation programs focused on Antarctic sea ice at different seasons but following a common approach: 1) choice of homogeneous study sites to minimize the impact of spatial variability on the interpretation of the results in a time series perspective and 2) priority given to the characterization of the physicochemical framework (texture, temperature, salinity, snow cover, susceptibility to brine drainage,…) prior to any other study. The study conducted in the framework of the ISPOL experiment (Nov.–Dec. 2004) demonstrated that stratification of the brine inclusions network positively influenced the conversion of DMSP into DMS but decreased fluxes of DMS and DMSP towards the ocean. The ice cover at that time of the year is characterised by a net DMSP loss and generates combined DMS and DMSP fluxes whose values fall in the range of atmospheric DMS flux from sea ice measured in the frame of other studies. The study conducted in the framework of the SIMBA experiment (sept.–oct. 2007) emphasized the importance of atmospheric thermal forcing on the sea ice thermal regime and DMS/P/O dynamics. The surface community of algae produced elevated levels of DMS/P/O in response to thermal, osmotic and potentially radiative stress during periods of atmospheric cooling while the development of an intense brine drainage regime contributed to periodically release the elevated levels of DMS/P/O produced in the sea ice towards the underlying ocean. The ice cover exhibited at that time of the year a net production of DMS/P/O and produced combined DMS and DMSP fluxes more than ten times higher than those observed for summer sea ice. The study conducted on laboratory prepared growing sea ice emphasised the impact of physicochemical processes on the gas signature of growing sea ice and represents a first step towards modelling gas exchanges within sea ice and across its interfaces with the ocean and the atmosphere.
Doctorat en Sciences agronomiques et ingénierie biologique
info:eu-repo/semantics/nonPublished
Andriamadio, Pascal. "Amino-2 thiophènes et dérivés : Constantes d'acidité et mesures de rotations empêchées en milieux non aqueux". Nancy 1, 1986. http://www.theses.fr/1986NAN10957.
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