Literatura académica sobre el tema "Compressible MHD"
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Artículos de revistas sobre el tema "Compressible MHD"
Valdettaro, Lorenzo y Maurice Meneguzzi. "Compressible MHD in Spherical Geometry". International Astronomical Union Colloquium 130 (1991): 80–85. http://dx.doi.org/10.1017/s0252921100079434.
Texto completoKowal, Grzegorz y A. Lazarian. "Scaling Relations of Compressible MHD Turbulence". Astrophysical Journal 666, n.º 2 (30 de agosto de 2007): L69—L72. http://dx.doi.org/10.1086/521788.
Texto completoZank, G. P. y W. H. Matthaeus. "The equations of reduced magnetohydrodynamics". Journal of Plasma Physics 48, n.º 1 (agosto de 1992): 85–100. http://dx.doi.org/10.1017/s002237780001638x.
Texto completoChanteur, G. "Localized Alfvénic solutions of nondissipative and compressible MHD". Nonlinear Processes in Geophysics 6, n.º 3/4 (31 de diciembre de 1999): 145–48. http://dx.doi.org/10.5194/npg-6-145-1999.
Texto completoWISNIEWSKI, MARTINA, RALF KISSMANN y FELIX SPANIER. "Turbulence evolution in MHD plasmas". Journal of Plasma Physics 79, n.º 5 (21 de febrero de 2013): 597–612. http://dx.doi.org/10.1017/s0022377813000147.
Texto completo王, 帅. "The Important Estimates for Compressible MHD Equations". Pure Mathematics 12, n.º 08 (2022): 1305–11. http://dx.doi.org/10.12677/pm.2022.128143.
Texto completoHesse, Michael, Joachim Birn y Seiji Zenitani. "Magnetic reconnection in a compressible MHD plasma". Physics of Plasmas 18, n.º 4 (abril de 2011): 042104. http://dx.doi.org/10.1063/1.3581077.
Texto completoLu, Ming, Yi Du y Zheng-an Yao. "Blow-up criterion for compressible MHD equations". Journal of Mathematical Analysis and Applications 379, n.º 1 (julio de 2011): 425–38. http://dx.doi.org/10.1016/j.jmaa.2011.01.043.
Texto completoCho, Jungyeon y A. Lazarian. "Generation of compressible modes in MHD turbulence". Theoretical and Computational Fluid Dynamics 19, n.º 2 (11 de marzo de 2005): 127–57. http://dx.doi.org/10.1007/s00162-004-0157-x.
Texto completoOughton, S., W. H. Matthaeus, Minping Wan y Tulasi Parashar. "Variance anisotropy in compressible 3-D MHD". Journal of Geophysical Research: Space Physics 121, n.º 6 (junio de 2016): 5041–54. http://dx.doi.org/10.1002/2016ja022496.
Texto completoTesis sobre el tema "Compressible MHD"
Yalim, Mehmet S. "An artificial compressibility analogy approach for compressible ideal MHD: application to space weather simulation". Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210427.
Texto completoablacdotvec{B} = 0$). The simulations become unstable unless specific measures have been taken.
In this thesis, a solenoidal constraint satisfying technique that allows discrete satisfaction of the solenoidal constraint up to the machine accuracy is presented and validated with a variety of test cases. Due to its inspiration from Chorin's artificial compressibility method developed for incompressible CFD applications, the technique was named as \
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Flutet, Vincent. "Etude numérique de la dynamique d'une couche limite turbulente avec effet MHD". Paris 6, 2007. http://www.theses.fr/2007PA066605.
Texto completoTurbulence is a phenomenon present in most streams. Near a boundary, its main effect is to increase the stream drag. Thus it can be interesting to weaken turbulence in order to decrease drag. Several studies have shown that the use of a magnetic field could weaken turbulence. Indeed, in a conducting fluid moving under a magnetic fluid counter-movement forces appear. This study aims at determining, under both subsonic and supersonic conditions, the effect of a magnetic field on a turbulent channel flow, especially on coherent structures of the boundary layer and on drag. Results have shown an increase of the sensibility to the magnetic field with compressibility. Reorganisation of coherent structures of boundary layer is also shown. A last, magnetic field causes a participation to drag but causes to a decrease in turbulent drag that is more important
KHANFIR, RABIA. "Approximation volumes finis de type cinetique du systeme hyperbolique de la mhd ideale compressible a pression isotrope". Paris 11, 1995. http://www.theses.fr/1995PA112163.
Texto completoKessler, Philippe. "Simulation des grandes échelles d’écoulements compressibles en géométrie complexe". Grenoble INPG, 1996. http://www.theses.fr/1996INPG0201.
Texto completoGomez, Thomas. "Dynamique des structures a petites echelles en ecoulements turbulents compressibles ou mhd : modelisation et intermittence". Paris 6, 1999. http://www.theses.fr/1999PA066566.
Texto completoTESSARI, Mirko. "Misurazione di marcatori solubili circolanti di danno endoteliale in soggetti ipomobili e stasi veno-linfatica agli arti inferiori sottoposti a un trattamento di compressione pneumatica intermittente". Doctoral thesis, Università degli studi di Ferrara, 2016. http://hdl.handle.net/11392/2403217.
Texto completoBackground: Many patients affected by low motility develop progressively worsening lower limb edema, together with a chronic inflammatory process, affecting their general condition. This indirect condition is often underestimated and undertreated. No drugs counteracting microcirculatory transmural pressure are available, since this last one is strictly related to the hydrostatic gravitational load. The increased internal pressure gives indication to elastic stocking compression. Nevertheless, the easy of use is significantly reduced in patients with physical handicaps, even if assisted. Intermittent pneumatic compression (IPC) is another option, of which there is anecdotal evidence, but not a scientific one. Aims: To investigate effectiveness and safety of IPC in hypomobile patient affected by chronic lower limb phlebo-lymphedema (CPL), related to gravitational gradient, according to evidencebased medicine. Outcome measures are clinical and laboratoristic, looking for a translational correlation, aimed for the identification of potential mechanisms of actions of the IPC that are still unknown up to now. Methods: Fifty subjects were selected (36 females, 14 males, 58.4±9 yo) affected by hypomobility syndrome associated with two concomitant causes of motor disability, neurodegenerative spastic palsy without phlebo-lymphatic disease and deforming arthritis and/or limiting the joint mobility in patients with chronic venous and lymphatic insufficiency. Patients were randomized 1/1 for IPC treatment and control. Clinical outcome measures were: 1) skin-fascia thickness at 8 assessment points in both legs, by high resolution ultrasonography (USHR); 2) lower limb circumference in 6 assessment points bilaterally; 3) Range of motion (ROM) of tibio-tarsal joint during plantar flexion and dorsal flexion bilaterally; 4) water plethysmography for bilateral lower limbs; 5) SF-36 quality of life questionnaire in 8 specific scales Lab outcome measures were represented by the assessment of 29 circulating cytokines, belonging to a significant array related to endothelial cell inflammatory phenotype. Results: No drop out were reported, so making the investigation significant. 1) Clinical outcome measures: skin-fascia thickness and circumference significantly improved in IPC group compared to controls (p<0.0001 and p<0.001, for skin-fascia thickness and circumference respectively). A plethysmographic assessment wasn’t feasible in all patients because of elephantiasis affecting many patients. The loss in significance led to the missing detection of significant variation among the two groups concerning the leg volume. Nevertheless, a significant improvement was reported in IPC group volume, compared to their baseline (p<0.0001), differently from the control group, where a significant increase was reported during the follow up (p<0.0001). Even if a ROM improvement wasn’t expected, following the edema decrease, a significant improvement in ROM was detected in IPC group, compared to the baseline (p<0.0001). As for the quality of life, only the IPC group showed a significant improvement with regard to physical activity (p<0.05), general health (p<0.004), vitality (p<0.02) and mental health (p<0.01). 2) Concerning the lab outcome, a defect in the array analysis doesn’t allow the data release up to now. These data will be presented during the PhD thesis discussion. Conclusion: This randomized investigation demonstrated the IPC efficacy and the tolerability for the lower limb chronic edema in hypomobile patients, up to know lacking in effective treatments for this important vascular disability. In fact, this condition significantly impacts the quality of life, as demonstrated by the improvement of more than the half items in the treated group.
Wu, Wen-Chou. "In vitro compressive fracture resistance of the human maxillary first premolar with different mod cavity design and restorative materials". Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2007m/wu.pdf.
Texto completoFELISATTI, Michele. "Compressione pneumatica intermittente negli stadi avanzati di arteriopatia periferica: studio delle modificazioni emodinamiche e della perfusione distale indotte da un dispositivo originale e confronto con uno strumento disponibile sul mercato". Doctoral thesis, Università degli studi di Ferrara, 2011. http://hdl.handle.net/11392/2389232.
Texto completoGargouri, Yosra. "Nouveau récepteur radio numérique pour les observations astrophysiques spatiales dans la bande de fréquence 1 kHz à 50 MHz". Thesis, Paris, ENST, 2017. http://www.theses.fr/2017ENST0057/document.
Texto completoSeveral astronomical phenomena emit low-frequency radio waves such as solar flares, magnetospheres, pulsars ... Some of these emissions are poorly captured by ground-based observatories mainly because of the Earth’s ionospheric cutoff frequency. It becomes necessary to send radio receivers in space to acquire them. However, these receivers are faced with strong restrictions on storage capacity, energy consumption and transmission rate.To overcome these challenges, sampling architectures should be reviewed and improved. A recent paradigm for signal acquisition and reconstruction, known as compressive sampling hat require a limited number of measurements and leads to the development of a new type of converter : the Analog to Information Converter (AIC). Unlike standard Analog to Digital converters (ADC), AIC can sample at a lower rate than that prescribed by Nyquist Shannon, exploiting the sparsity of signals.The main goal of this thesis is to study the application of compressed sampling for the acquisition of spatial astrophysical signals in the frequency band [1 kHz to 50 MHz]. We focus on signals emitted by the two brightest radio sources in the sky as seen from the Earth, namely the Sun and Jupiter. Based on the characteristic properties of our signals of interest, we progressively and methodologically constructed our acquisition scheme : From the study of signals compressibility, to the choice of the AIC architecture and the signal reconstruction algorithm. We also proposed a new, flexible and programmable implementation of the selected AIC which allows the acquisition of different types of signal having the same compressibility domain and with different compression factors. Using a 65-nm CMOS technology, we evaluated the gain in terms of the amount of data acquired and power consumed of this architecture compared to the traditional analog-to-digital converter
Gasparetto, Nicola. "Arresto cardiaco e cure post arresto cardiaco in ambito cardiologico". Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3422778.
Texto completoINTRODUZIONE: l’arresto cardiaco (AC) è una condizione clinica drammatica, caratterizzata dall’improvvisa assenza di attività meccanica del cuore. E’ gravata da un’elevatissima mortalità e morbidità se non si interviene prontamente. Per poter garantire al paziente le maggiori possibilità di superare l’evento senza reliquati neurologici è fondamentale un’immediata rianimazione cardiopolmonare (RCP) di base di alta qualità seguita da una precoce defibrillazione. Le successive fasi di rianimazione avanzata comprendono diverse strategie che anch’esse possano aumentare la probabilità di recupero neurologico del paziente ma di secondaria importanza rispetto alle fasi iniziali. SCOPO DELLO STUDIO: nella prima parte del dottorato di ricerca lo scopo è stato quello di indagare epidemiologicamente l’impatto dell’AC, l’organizzazione delle cure nel territorio, la diffusione delle cure post AC e conseguentemente la sopravvivenza globale in Italia e in Veneto. A seguire si sono voluti ricercare gli elementi precoci correlati ad un esito neurologico favorevole, indagare la fattibilità e l’utilità di utilizzo dei massaggiatori meccanici e infine valutare la risposta del miocardio alla riduzione della temperatura durante l’ipotermia terapeutica post arresto cardiaco. METODI: la prima parte della ricerca (parte epidemiologica) è stata basata su una revisione della letteratura ricercando tutti gli studi epidemiologici con i dati di sopravvivenza italiani e i principali europei. In merito alla survey dell’ipotermia terapeutica nelle Terapie Intensive e nei Sistemi di Emergenza ed Urgenza, invece, la raccolta dati è avvenuta mediante un questionario. La seconda parte della ricerca (parte di ricerca clinica) sono stati analizzati i dati dei pazienti ricoverati in UCIC di Padova (per l’analisi sui predittori di outcome neurologico e la variazione della velocità del flusso coronarico) e di Treviso (per l’analisi sull’utilizzo dei massaggiatori meccanici). RISULTATI: l’analisi epidemiologica ha messo in luce come l’AC sia ancora un evento clinico ad elevato impatto sociale e con percentuali di mortalità ancora molto elevate. A differenza degli altri paesi europei l’Italia si colloca come fanalino di coda in particolare quando si analizza la percentuale di RCP da parte di astanti e la diffusione dei sistemi di accesso pubblico alla defibrillazione. Anche nell’ambito della implementazione delle cure post AC nelle ambulanze e nelle nostre Terapie Intensive il dato italiano è ancora i più bassi a livello europeo. L’analisi dei predittori di outcome neurologico ci ha permesso di descriverne alcuni precoci che già dopo 24 ore dall’evento danno preziose informazioni. All’analisi multivariata è emerso come valori di enolasi neurono-specifica (NSE) >45.1 µg/L o NSE <45.1 µg/L ma con età >78 anni erano indici di outcome neurologico sfavorevole (rispettivamente p<0.001 e p=0.009). Un buon recupero neurologico era invece correlato a valori di NSE <45.1 µg/L in paziente con età <78 anni e valori di S-100B <0.31 µg/L (p=0.025). L’analisi dei dati raccolti ci ha permesso inoltre di capire come durante riduzione della temperatura a 32°C nei pazienti post AC, la velocità del flusso coronarico, determinato con tecnica Doppler, mostrava una significativa riduzione, proporzionalmente alla riduzione del doppio prodotto, evidenza di una riduzione del consumo di ossigeno miocardico, potenziale meccanismo capace di ridurre il danno da ischemia-riperfusione. Infine l’utilizzo dei massaggiatori meccanici per facilitare la RCP può permettere il trasporto del paziente durante AC con la possibilità di poter eseguire l’angioplastica o posizionare un sistema di assistenza tipo ECMO. CONCLUSIONI: la diffusione della cultura della RCP e dei sistemi di accesso pubblico alla defibrillazione permettono di migliorare notevolmente le possibilità di sopravvivenza dei pazienti colpiti da AC nel territorio. Molti sono i progressi possibili in Italia che dovrebbero partire a livello istituzionale. E’ molto importante, inoltre, attuare delle ottime cure post AC che si integrino perfettamente con quanto già attuato nel territorio e con ciò che è possibile attuare a livello ospedaliero (es. posizionamento di massaggiatore meccanico per angioplastica primaria o posizionamento di ECMO). L’integrazione di una buona cultura della defibrillazione, i sistemi di accesso pubblico alla defibrillazione, l’ACLS e le cure post arresto cardiaco rappresenta la catena essenziale per migliorare la prognosi dei pazienti colpiti.
Libros sobre el tema "Compressible MHD"
Deane, Anil E. solwnd: A 3D compressible MHD code for solar wind studies : version 1.0: Cartesian coordinates. Washington: Goddard Space Flight Center, 1996.
Buscar texto completoYang, Yan. Energy Transfer and Dissipation in Plasma Turbulence: From Compressible MHD to Collisionless Plasma. Springer, 2019.
Buscar texto completoYang, Yan. Energy Transfer and Dissipation in Plasma Turbulence: From Compressible MHD to Collisionless Plasma. Springer, 2019.
Buscar texto completoMiller, Aaron E. y Teresa M. DeAngelis. Transverse Myelitis. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199732920.003.0004.
Texto completoVodopivec, Ivana y Tracey A. Cho. Neurobiology of Transverse Myelitis and Infectious Myelopathies. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199937837.003.0153.
Texto completoKatirji, Bashar. Case 8. Editado por Bashar Katirji. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190603434.003.0012.
Texto completoKatirji, Bashar. Case 16. Editado por Bashar Katirji. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190603434.003.0020.
Texto completoWilson, Thomas J. y Robert J. Spinner. Peroneal Neuropathy—Fibular Tunnel Syndrome. Editado por Meghan E. Lark, Nasa Fujihara y Kevin C. Chung. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190617127.003.0009.
Texto completoShaibani, Aziz. Numbness. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199898152.003.0023.
Texto completoShaibani, Aziz. Hyperreflexia. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190661304.003.0018.
Texto completoCapítulos de libros sobre el tema "Compressible MHD"
Yang, Yan. "Hybrid Scheme for Compressible MHD Turbulence". En Energy Transfer and Dissipation in Plasma Turbulence, 35–67. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8149-2_3.
Texto completoYang, Yan. "Energy Cascade in Compressible MHD Turbulence". En Energy Transfer and Dissipation in Plasma Turbulence, 69–90. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8149-2_4.
Texto completoTu, C. Y. y E. Marsch. "Nature and Origin of Compressible MHD Fluctuations". En MHD Structures, Waves and Turbulence in the Solar Wind, 114–43. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8541-5_5.
Texto completoPettini, Marco, Luigi Nocera y Angelo Vulpiani. "Compressible MHD Turbulence: An Efficient Mechanism to Heat Stellar Coronae". En Chaos in Astrophysics, 305–16. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5468-7_14.
Texto completoLazarian, A. y J. Cho. "Basic Properties of Compressible MHD Turbulence: Implications for Molecular Clouds". En Magnetic Fields and Star Formation, 29–43. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-0491-5_3.
Texto completoChernyshov, A. A., K. V. Karelsky y A. S. Petrosyan. "Large Eddy Simulations of Compressible MHD Turbulence in Heat-Conducting Fluid". En Direct and Large-Eddy Simulation VII, 585–89. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-3652-0_86.
Texto completoZhou, Wei, Zhaoyang Guo, Kangkang Wang, Haibo Zhang y Xuemao Guan. "Influence of Anti-Mud Agent on the Performance of Gangue Backfilling Paste". En Lecture Notes in Civil Engineering, 351–60. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_29.
Texto completoHerring, Jackson R. y James C. McWilliams. "COMPRESSIBLE MHD TURBULENT RELAXATION". En Lecture Notes on Turbulence, 148–53. WORLD SCIENTIFIC, 1989. http://dx.doi.org/10.1142/9789814434348_0022.
Texto completoPouquet, Annick G. "An Introduction to Compressible MHD Turbulence". En Interstellar Turbulence, 87–94. Cambridge University Press, 1999. http://dx.doi.org/10.1017/cbo9780511564666.014.
Texto completoGHOSH, Sanjoy, William H. MATTHAEUS y Melvyn L. GOLDSTEIN. "TURBULENT RELAXATION IN COMPRESSIBLE TWO-DIMENSIONAL MAGNETOHYDRODYNAMICS". En Turbulence and Nonlinear Dynamics in MHD Flows, 247–52. Elsevier, 1989. http://dx.doi.org/10.1016/b978-0-444-87396-5.50032-8.
Texto completoActas de conferencias sobre el tema "Compressible MHD"
Ladeinde, Foluso. "Direct Simulation of Compressible MHD Turbulence". En 33rd Plasmadynamics and Lasers Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-2140.
Texto completoVázquez-Semadeni, E., T. Passot y A. Pouquet. "Highly compressible MHD turbulence and gravitational collapse". En The seventh astrophysical conference: Star formation, near and far. AIP, 1997. http://dx.doi.org/10.1063/1.52735.
Texto completoKowal, Grzegorz y A. Lazarian. "Aspects of density fluctuations in compressible MHD turbulence". En TURBULENCE AND NONLINEAR PROCESSES IN ASTROPHYSICAL PLASMAS; 6th Annual International Astrophysics Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2778995.
Texto completoShaikh, Dastgeer, P. K. Shukla, Padma K. Shukla, Bengt Eliasson y Lennart Stenflo. "Three Dimensional Simulations of Compressible Hall MHD Plasmas". En FRONTIERS IN MODERN PLASMA PHYSICS: 2008 ICTP International Workshop on the Frontiers of Modern Plasma Physics. AIP, 2008. http://dx.doi.org/10.1063/1.3013784.
Texto completoSrinivasan, K., R. Agarwal, P. Adhikari y P. Deb. "Development of an object-oriented compressible viscous MHD code". En 32nd AIAA Plasmadynamics and Lasers Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-2740.
Texto completoMiki, Kenji y Suresh Menon. "Local Dynamic Subgrid Closure for Compressible MHD Turbulence Simulation". En 37th AIAA Plasmadynamics and Lasers Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-2891.
Texto completoDeb, P. y R. Agarwal. "Numerical solution of compressible viscous MHD equations with chemical kinetics". En 40th AIAA Aerospace Sciences Meeting & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-203.
Texto completoLadeinde, Foluso y Datta Gaitonde. "Anisotropy of Compressible MHD Turbulence in a Mean Magnetic Field". En 42nd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-314.
Texto completoKawai, Soshi. "High-order divergence-free method for compressible MHD with shock waves". En 44th AIAA Plasmadynamics and Lasers Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-2756.
Texto completoSoulaimani, Azzeddine, Gerardo D y Nizar Be. "Acceleration of GMRES convergence for three-dimensional compressible, incompressible and MHD flows". En 14th Computational Fluid Dynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-3381.
Texto completoInformes sobre el tema "Compressible MHD"
Holden, T., R. Hosbons y J. Root. CWI1988-Andi-21 Neutron Diffraction of Axial Residual Strains Near a Circumferential Crack. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), enero de 1989. http://dx.doi.org/10.55274/r0011391.
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