Academic literature on the topic 'Coefficient of transport'

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Journal articles on the topic "Coefficient of transport"

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Lichner, Ľ., and A. Čipáková. "Cadmium distribution coefficeints and Cd transport in structured soils." Plant, Soil and Environment 48, No. 3 (2011): 96–100. http://dx.doi.org/10.17221/4206-pse.

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In the case of cadmium transport via soil macropores, the short-term duration of an interaction between the reactive solute in aqueous phase and soil, as well as cadmium precipitation or adsorption on particles < 10–5 m should be taken into account. Two distribution coefficients are proposed for predicting the cadmium transport in a structured soil: the matrix distribution coefficient Kdm, equal to the equilibrium distribution coefficient Kdeq and estimated using the conventional batch technique, and the macropore distribution coefficient KdM, estimated using the modified batch technique. It was found that the conventional approach (using the coefficient Kdeq only) would underestimate a penetration of the part of Cd transported in the macropores about 255-times in the loamy-sand soil in Kalinkovo, 20-times in the loam soil in Macov, and 122-times in the clay soil in Jurová in comparison with the approach proposed in this study.
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Hitchon, W. N. G., C. D. Beidler, H. E. Mynick, and J. L. Shohet. "Ripple transport at low collision frequency." Journal of Plasma Physics 34, no. 2 (1985): 327–36. http://dx.doi.org/10.1017/s0022377800002907.

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A new stellarator ripple-transport mechanism is predicted at the low collision frequencies characteristic of ions in a reactor plasma. A heuristic argument is used to derive an approximate diffusion coefficient whose magnitude, scaling and range of applicability agree well with the results of Monte Carlo calculations. The proposed diffusion coefficient is independent of collision frequency within its range of validity, which encompasses the parameters of most ions in a reactor. Its magnitude is smaller than previous estimates for the diffusion coefficient in this range, but larger than the diffusion coefficients in all other low-collision-frequency regimes. An explanation of the form of the diffusion coefficient is given in terms of analytic theory of ripple transport.
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Datta, S. K. "On the transport properties of simple liquids." Canadian Journal of Physics 64, no. 2 (1986): 211–14. http://dx.doi.org/10.1139/p86-038.

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Closed analytical expressions for the diffusion coefficient and shear-viscosity coefficient of dense, simple fluids characterized by the Lennard-Jones potential function have been obtained using the Weeks, Chandler, and Andersen criterion for the division of the pair potential. The expressions are then used to calculate these properties for some real fluids. The deviations between the estimated and measured values of the coefficients are attributed mostly to the approximate nature of the Kirkwood and Rice expressions for shear viscosity and the friction coefficient used to calculate those properties.
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Pokorski, Janusz, Hubert Sar, and Andrzej Reński. "INFLUENCE OF EXPLOITATION CONDITIONS ON ANTI-SKID PROPERTIES OF TYRES." Transport 34, no. 4 (2019): 415–24. http://dx.doi.org/10.3846/transport.2019.10426.

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Tyre-to-road adhesion plays an important role when taking into account transmission of forces between tyres and road surface. It consequently influences vehicle safety. Moreover, it plays a significant role for modelling vehicle motion, which is often applied in the development of automotive active safety systems and in traffic accidents reconstruction. Furthermore, tyre-to-road adhesion properties are dependent on many factors. One of the factors is the type of tyre – summer or winter. This is the reason why it is justified to study the anti-slip properties of summer and winter tyres. This paper shows the method of measuring tyre-to-road adhesion coefficient. It is based on a skid resistance tester SRT-4 that consists of a special dynamometer trailer, towing vehicle and test-measuring equipment. It was designed to be applied in civil/road engineering and further developed. As a result, the SRT-4 system automatically obtains adhesion characteristics, such as the graph of tyre-to-road adhesion coefficient as a function of wheel slip ratio and velocity characteristics of peak adhesion coefficient. Results of the study present the above mentioned characteristics for different types of tyres (summer, winter) in different exploitation conditions. Differences between presented characteristics caused by tyre type and conditions of exploitation are shown. For example, for winter tyres we noticed that the peak value of adhesion coefficient was attained for higher values of slip ratio as compared with summer tyres.
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Yamaguchi, Hiroki, Sanac-I. Itoh, Kazuaki Hanada, Tetsuyuki Kubota, and Shinichiro Toda. "Transport Coefficient and Heat Pulse Propagation." Fusion Technology 27, no. 3T (1995): 497–500. http://dx.doi.org/10.13182/fst95-a11947137.

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Petrache, Mircea, and Roger Züst. "Coefficient Groups Inducing Nonbranched Optimal Transport." Zeitschrift für Analysis und ihre Anwendungen 37, no. 4 (2018): 389–416. http://dx.doi.org/10.4171/zaa/1620.

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Gupta, Sourendu. "A transport coefficient: the electrical conductivity." Journal of Physics: Conference Series 50 (November 1, 2006): 426–29. http://dx.doi.org/10.1088/1742-6596/50/1/063.

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Morgenstern, B., and M. Gering. "Transport coefficient in dissipative fluid dynamics." Physics Letters B 235, no. 1-2 (1990): 21–24. http://dx.doi.org/10.1016/0370-2693(90)90089-o.

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Nguyen, Tien-Quang, Maja Glorius, and Cornelia Breitkopf. "A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A." Advances in Mathematical Physics 2018 (October 4, 2018): 1–11. http://dx.doi.org/10.1155/2018/5462659.

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A new theoretical approach has been established to define transport coefficients of charge and mass transport in porous materials directly from impedance data; thus four transport coefficients could be determined. In case of ammonia adsorption on sulfated zirconia, the diffusion coefficient was figured out to be approximately the mobility diffusion coefficient of ammonium ions: 1.2 x 10-7 cm2/s. The transport of carbon dioxide was examined for samples of zeolite type 5A in different hydration states. By impedance spectroscopy measurements, the diffusion coefficient of water vapor at 373 K is estimated to be about 7 x 10-6 cm2/s. The influence of carbon dioxide adsorption on diffusion coefficients is studied based on two pellet types of zeolite 5A. The difference between polar and non-polar gas adsorption in porous solids is considered as changed characteristic of impedance.
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Mrani, I., J. C. Be´net, and G. Fras. "Transport of Water in a Biconstituent Elastic Medium." Applied Mechanics Reviews 48, no. 10 (1995): 717–21. http://dx.doi.org/10.1115/1.3005053.

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A phenomenological equation is established for water transport in a biconstituent, isotropic, isothermal elastic medium. The equation includes a term related to the water content gradient and a term related to the deformation gradient. It is shown that in the case of an infinite plate, the transport law can be similar to Fick’s law in which water flux is proportional to the water content gradient alone. The apparent transport coefficient then depends on the hygroscopic and rheological coefficients of the medium. Experimental analysis of the evolution of water content profiles of agar gel plates validates this transport law and makes it possible to deduce the variation in apparent transport coefficient according to water content. Transport coefficients associated with water content and deformation gradients and applicable to any geometrical features are deduced.
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Dissertations / Theses on the topic "Coefficient of transport"

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Kosztolowicz, Tadeusz. "How to measure subdiffusion coefficient." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196926.

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We propose a method to measure a subdiffusion coefficient Dα. The method, which exploits a membrane system, relies on the so-called near-membrane layers. We experimentally study the diffusion of glucose and sucrose in a gel solvent. We find a fully analytic solution of the fractional subdiffusion equation with the initial and boundary conditions representing the system under study. Confronting the experimental data with theoretical results, we find the values of the subdiffusion coefficient for investigated substances.
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Kosztolowicz, Tadeusz. "How to measure subdiffusion coefficient." Diffusion fundamentals 2 (2005) 123, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14464.

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We propose a method to measure a subdiffusion coefficient Dα. The method, which exploits a membrane system, relies on the so-called near-membrane layers. We experimentally study the diffusion of glucose and sucrose in a gel solvent. We find a fully analytic solution of the fractional subdiffusion equation with the initial and boundary conditions representing the system under study. Confronting the experimental data with theoretical results, we find the values of the subdiffusion coefficient for investigated substances.
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Kalnins, Juris Roberts, Eugene A. Kotomin, and Vladimir N. Kuzovkov. "Effective diffusion coefficient in one-dimensional heterogeneous solids." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-198322.

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Kalnin, Juris Robert, Eugene A. Kotomin, Joachim Maier, and Vladimir N. Kuzovkov. "Calculation of the effective diffusion coefficient for heterogeneous media: Calculation of the effective diffusion coefficient forheterogeneous media." Diffusion fundamentals 2 (2005) 21, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14351.

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Kalnin, Juris Robert, Eugene A. Kotomin, Joachim Maier, and Vladimir N. Kuzovkov. "Calculation of the effective diffusion coefficient for heterogeneous media." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-195345.

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Fröba, Andreas P., Cristina Botero, Heiko Kremer, and Alfred Leipertz. "Mutual diffusion coefficient in fluids by dynamic light scattering." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196269.

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Ohkubo, Takahiro, Koh Kidena, and Akihiro Ohira. "Time-dependent diffusion coefficient of proton in polymer electrolyte membrane." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-192269.

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We investigated the time-dependent self-diffusion coefficients of water, D(T eff), in polymer electrolyte membranes at 278 K. TheD(T eff) was measured from T eff=0.7 to 100 ms by field gradient NMR techniques. The results showed that the self-diffusion coefficients of water were dependent on T eff less than 2 ms due to restricted diffusion, and were constant beyond 3 ms. The tortuosity and surface-to-volume ratio related to water diffusion were also estimated from D(T eff). The obtained values revealed the existence of large-scale restricted geometry compared with well-known nanometer-sized domain in polymer electrolyte membranes.
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Saxton, Michael J. "Diffusion coefficient as a function of mass for globular macromolecules." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-198611.

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Fröba, Andreas P., Cristina Botero, Heiko Kremer, and Alfred Leipertz. "Mutual diffusion coefficient in fluids by dynamic light scattering." Diffusion fundamentals 2 (2005) 70, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14404.

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Keller, Steven Ede. "Flux-limited Diffusion Coefficient Applied to Reactor Analysis." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16126.

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A new definition of the diffusion coefficient for use in reactor physics calculations is evaluated in this thesis. It is based on naturally flux-limited diffusion theory (FDT), sometimes referred to as Levermore-Pomraning diffusion theory. Another diffusion coefficient more loosely based on FDT is also evaluated in this thesis. Flux-limited diffusion theory adheres to the physical principle of flux-limiting, which is that the magnitude of neutron current is not allowed to exceed the scalar flux. Because the diffusion coefficients currently used in the nuclear industry are not flux-limited they may violate this principle in regions of large spatial gradients, and because they encompass other assumptions, they are only accurate when used in the types of calculations for which they were intended. The evaluations were performed using fine-mesh diffusion theory. They are in one spatial dimension and in 47, 4, and 2 energy groups, and were compared against a transport theory benchmark using equivalent energy structures and spatial discretization. The results show that the flux-limited diffusion coefficient (FD) outperforms the standard diffusion coefficient in calculations of single assemblies with vacuum boundaries, according to flux- and eigenvalue-errors. In single assemblies with reflective boundary conditions, the FD yielded smaller improvements, and tended to improve only the fast-group results. The results also computationally confirm that the FD adheres to flux-limiting, while the standard diffusion coefficient does not.
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Books on the topic "Coefficient of transport"

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A, Wakeham W., and Ho C. Y. 1928-, eds. Transport properties of fluids: Thermal conductivity, viscosity, and diffusion coefficient. Hemisphere Pub. Corp., 1988.

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Townsend, Lawrence W. An evaluation of energy-independent heavy ion transport coefficient approximations. National Aeronautics and Space Administration?, 1988.

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Townsend, Lawrence W. An evaluation of energy-independent heavy ion transport coefficient approximations. National Aeronautics and Space Administration?, 1988.

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Townsend, Lawrence W. An evaluation of energy-independent heavy ion transport coefficient approximations. National Aeronautics and Space Administration?, 1988.

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Townsend, Lawrence W. An assessment of transport coefficient approximations used in galactic heavy ion shielding calculations. National Aeronautics and Space Administration, Langley Research Center, 1986.

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Myers, Tommy E. Application of a semianalytical model to TNT transport in laboratory soil columns. U.S. Army Engineer Waterways Experiment Station, 1998.

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Foster, John E. Inter-cusp ion and electron transport in a NSTAR-derivative ion thruster. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Foster, John E. Inter-cusp ion and electron transport in a NSTAR-derivative ion thruster. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Foster, John E. Inter-cusp ion and electron transport in a NSTAR-derivative ion thruster. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Foster, John E. Inter-cusp ion and electron transport in a NSTAR-derivative ion thruster. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Book chapters on the topic "Coefficient of transport"

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Capitelli, Mario, Domenico Bruno, and Annarita Laricchiuta. "Transport Coefficient Evaluation." In Fundamental Aspects of Plasma Chemical Physics. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-8172-1_2.

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Dapor, Maurizio. "Backscattering Coefficient." In Transport of Energetic Electrons in Solids. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43264-5_8.

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Dapor, Maurizio. "Backscattering Coefficient." In Transport of Energetic Electrons in Solids. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03883-4_6.

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Dapor, Maurizio. "Backscattering Coefficient." In Transport of Energetic Electrons in Solids. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47492-2_6.

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Koyama, T., T. Araiso, and M. Mochizuki. "Oxygen Diffusion Coefficient of Cell Membranes." In Oxygen Transport to Tissue VIII. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-5188-7_13.

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Torres-Rincon, Juan M. "Shear Viscosity and KSS Coefficient." In Hadronic Transport Coefficients from Effective Field Theories. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00425-9_3.

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Gabitova, Gulnara, Daria Zaborova, and Sergey Barinov. "Experimental Determination of Permeability Coefficient." In International Scientific Conference Energy Management of Municipal Transportation Facilities and Transport EMMFT 2017. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70987-1_88.

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Ōnuki, Y., S. W. Yun, K. Satoh, H. Sugawara, and H. Sato. "Anomalous Hall Coefficient in the f Electron System." In Transport and Thermal Properties of f-Electron Systems. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2868-5_10.

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Hyder, Fahmeed, Ikuhiro Kida, Kevin L. Behar, Richard P. Kennan, and Douglas L. Rothman. "Dominant Events That Modulate Mass Transfer Coefficient of Oxygen in Cerebral Cortex." In Oxygen Transport to Tissue XXIV. Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0075-9_37.

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Malysheva, Olga, Stanislav Vlasevskii, Igor Barinov, Vitaly Skorik, and Ekaterina Buniaeva. "Regulated Single-Phase Rectifier Circuit Solutions and Their Impact on Power Coefficient." In VIII International Scientific Siberian Transport Forum. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37916-2_9.

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Conference papers on the topic "Coefficient of transport"

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"DETERMINATION OF THE ROLLING RESISTANCE COEFFICIENT FOR THE AUDI A4 VEHICLE." In Transport for Today's Society. Faculty of Technical Sciences Bitola, 2019. http://dx.doi.org/10.20544/tts2018.p67.

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Sakai, Sunao, and Atsushi Nakamura. "Transport Coefficient of Gluon Plasma from Lattice QCD." In XXIIIrd International Symposium on Lattice Field Theory. Sissa Medialab, 2005. http://dx.doi.org/10.22323/1.020.0186.

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Neuhaus, Thomas. "Towards the Continuum Limit in Transport Coefficient Computations." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0453.

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Virsta, Ana. "HYDRAULIC FRICTION COEFFICIENT OF STREAMS DUE TO SEDIMENT TRANSPORT." In 14th SGEM GeoConference on WATER RESOURCES. FOREST, MARINE AND OCEAN ECOSYSTEMS. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b31/s12.047.

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Wallach, Ricardo, Bento Mattos, Roberto Girardi, and Marcelo Curvo. "Aerodynamic Coefficient Prediction of Transport Aircraft Using Neural Network." In 44th AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-658.

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Mehtar-Tani, Yacine. "The transport coefficient $\hat{q}$ in an anisotropic medium." In 4th international workshop High-pT physics at LHC 09. Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.080.0009.

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Haltas, I. "Calculating the Macrodispersion Coefficient in the Stochastic Transport Equation." In World Environmental and Water Resources Congress 2010. American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41114(371)454.

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Talalay, M. V., Yu E. Vasiliev, A. V. Kochetkov, L. V. Yankovsky, and V. A. Chudinov. "Calculation of the risk of critical friction coefficient values." In PROCEEDINGS OF THE SCIENTIFIC CONFERENCE ON RAILWAY TRANSPORT AND ENGINEERING (RTE 2021). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0064430.

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Lovell, A. T., Jeremy C. Hebden, John C. Goldstone, and Mark Cope. "Determination of the transport scattering coefficient of red blood cells." In BiOS '99 International Biomedical Optics Symposium, edited by Britton Chance, Robert R. Alfano, and Bruce J. Tromberg. SPIE, 1999. http://dx.doi.org/10.1117/12.356795.

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Garcia, B., AC Cherubini, and AC Cerepi. "Streaming potential coupling coefficient and transport properties of unsaturated carbonate rocks." In Second EAGE Workshop on Geochemistry in Petroleum Operations and Production. EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201803098.

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Reports on the topic "Coefficient of transport"

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Klibanov, Michael V., and Sergey E. Pamyatnykh. Global Uniqueness for a Coefficient Inverse Problem for the Non-Stationary Transport Equation via Carleman Estimate. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada448486.

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Mountain, R. D. Transport coefficients and molecular dynamics:. National Institute of Standards and Technology, 2004. http://dx.doi.org/10.6028/nist.ir.7170.

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Hirshman, S. P., K. C. Shaing, W. I. van Rij, C. O. Beasley, Jr., and E. C. Crume, Jr. Plasma transport coefficients for nonsymmetric toroidal confinement systems. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/6092128.

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Cloutman, L. D. A database of selected transport coefficients for combustion studies. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10181503.

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Luke, T. C. T. Measurement of particle transport coefficients on Alcator C-Mod. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/28385.

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Chang, C. S., and S. M. Kaye. Neoclassical transport coefficients for tokamaks with bean-shaped flux surfaces. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6412396.

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Thomas, Douglas, and Mellon Michael. Sublimation of terrestrial permafrost and the implications for ice-loss processes on Mars. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41244.

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Sublimation of ice is rate-controlled by vapor transport away from its outer surface and may have generated landforms on Mars. In ice-cemented ground (permafrost), the lag of soil particles remaining after ice loss decreases subsequent sublimation. Varying soil-ice ratios lead to differential lag development. Here we report 52 years of sublimation measurements from a permafrost tunnel near Fairbanks, Alaska, and constrain models of sublimation, diffusion through porous soil, and lag formation. We derive the first long-term in situ effective diffusion coefficient of ice-free loess, a Mars analog soil, of 9.05 × 10⁻⁶ m² s⁻¹, ~5× larger than past theoretical studies. Exposed ice-wedge sublimation proceeds ~4× faster than predicted from analogy to heat loss by buoyant convection, a theory frequently employed in Mars studies. Our results can be used to map near-surface ice-content differences, identify surface processes controlling landform formation and morphology, and identify target landing sites for human exploration of Mars.
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Cloutman, L. D. A Selected Library of Transport Coefficients for Combustion and Plasma Physics Applications. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/793685.

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Marinak, Michael Martin. Behavior of the particle transport coefficients near the density limit in MTX. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10178243.

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Telfeyan, Katherine Christina, Stuart Douglas Ware, Paul William Reimus, and Kay Hanson Birdsell. Comparison of Experimental Methods for Estimating Matrix Diffusion Coefficients for Contaminant Transport Modeling. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1407916.

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