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Journal articles on the topic 'Reactive diffusive transport'

Author: Grafiati

Published: 25 May 2024

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1

Zimmerman, R. A., G. Severino, and D. M. Tartakovsky. "Hydrodynamic dispersion in a tube with diffusive losses through its walls." Journal of Fluid Mechanics 837 (January 5, 2018): 546–61. http://dx.doi.org/10.1017/jfm.2017.870.

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Advective–diffusive transport of passive or reactive scalars in confined environments (e.g. tubes and channels) is often accompanied by diffusive losses/gains through the confining walls. We present analytical solutions for transport of a reactive solute in a tube, whose walls are impermeable to flow but allow for solute diffusion into the surrounding medium. The solute undergoes advection, diffusion and first-order chemical reaction inside the tube, while diffusing and being consumed in the surrounding medium. These solutions represent a leading-order (in the radius-to-length ratio) approxima

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2

Seaïd, Mohammed. "On the Quasi-monotone Modified Method of Characteristics for Transport-diffusion Problems with Reactive Sources." Computational Methods in Applied Mathematics 2, no. 2 (2001): 186–210. http://dx.doi.org/10.2478/cmam-2002-0012.

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AbstractThis is an attempt to construct a strong numerical method for transportdiffusion equations with nonlinear reaction terms, which relies on the idea of the Modified Method of Characteristics that is explicit but stable and is second-order accurate in time. The method consists in convective-diffusive splitting of the equations along the characteristics. The convective stage of the splitting is straightforwardly treated by a quasi-monotone and conservative modified method of characteristics, while the diffusive-reactive stage can be approximated by an explicit scheme with an extended real

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3

CVETKOVIC, V., J. O. SELROOS, and H. CHENG. "Transport of reactive tracers in rock fractures." Journal of Fluid Mechanics 378 (January 10, 1999): 335–56. http://dx.doi.org/10.1017/s0022112098003450.

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Transport of tracers subject to mass transfer reactions in single rock fractures is investigated. A Lagrangian probabilistic model is developed where the mass transfer reactions are diffusion into the rock matrix and subsequent sorption in the matrix, and sorption on the fracture surface as well as on gauge (infill) material in the fracture. Sorption reactions are assumed to be linear, and in the general case kinetically controlled. The two main simplifying assumptions are that diffusion in the rock matrix is one-dimensional, perpendicular to the fracture plane, and the tracer is displaced wit

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4

Horsch, Georgios M. "Steady, Diffusive-Reactive Transport in Shallow Triangular Domain." Journal of Engineering Mechanics 124, no. 10 (1998): 1135–41. http://dx.doi.org/10.1061/(asce)0733-9399(1998)124:10(1135).

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5

Stefanovic, Dragoslav L., and Heinz G. Stefan. "Accurate Two-Dimensional Simulation of Advective-Diffusive-Reactive Transport." Journal of Hydraulic Engineering 127, no. 9 (2001): 728–37. http://dx.doi.org/10.1061/(asce)0733-9429(2001)127:9(728).

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6

Heming, T. A., E. K. Stabenau, C. G. Vanoye, H. Moghadasi, and A. Bidani. "Roles of intra- and extracellular carbonic anhydrase in alveolar-capillary CO2 equilibration." Journal of Applied Physiology 77, no. 2 (1994): 697–705. http://dx.doi.org/10.1152/jappl.1994.77.2.697.

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Alveolar-capillary CO2 equilibration involves diffusive equilibration of CO2 across the blood-gas barrier and chemical equilibration of perfusate CO2-HCO-3-H+ reactions. These processes are governed by different, but related, driving forces and conductances. The present study examined the importance of pulmonary carbonic anhydrase (CA) for diffusive and reactive CO2 equilibration in isolated rat lungs. Lungs were perfused with salines containing membrane-impermeant or -permeant inhibitors of CA. Measurements of CO2 excretion rate, equilibrated venous and arterial PCO2 and pH, and postcapillary

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7

Liu, Jiangjin, Pablo A. García-Salaberri, and Iryna V. Zenyuk. "Bridging Scales to Model Reactive Diffusive Transport in Porous Media." Journal of The Electrochemical Society 167, no. 1 (2020): 013524. http://dx.doi.org/10.1149/2.0242001jes.

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8

Jungnickel, Christian, David Smith, and Stephen Fityus. "Coupled multi-ion electrodiffusion analysis for clay soils." Canadian Geotechnical Journal 41, no. 2 (2004): 287–98. http://dx.doi.org/10.1139/t03-092.

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For a well-engineered compacted clay landfill liner, diffusive transport through the liner is the main mass transport mechanism from the landfill. Therefore, accurate estimates of diffusion coefficients for clay liners are essential for the engineering design of liner systems. A long-standing problem has been the effect of ion pairing on the estimation of diffusion coefficients for multicomponent ionic solutions migrating through clay liners. This paper considers the solution of a fully coupled set of transport equations describing the simultaneous diffusion of several ion species through a cl

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9

Kapoor, Rajat, and S. T. Oyama. "Measurement of solid state diffusion coefficients by a temperature-programmed method." Journal of Materials Research 12, no. 2 (1997): 467–73. http://dx.doi.org/10.1557/jmr.1997.0068.

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This paper presents a method for determining diffusivities in solids where the diffusing species desorbs or reacts at the external surfaces, and where the diffusivity does not vary appreciably with concentration. The method involves measuring the flux of the diffusive species out of the solid under the influence of a temperature program. A general model is developed, based on nonisothermal Fickian diffusion, which is applicable to solid particles with slab or spherical geometry. The solution is presented both as an analytical expression and as correlation charts of experimentally observable qu

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10

Honjo, Yusuke, and Thuraisamy Thavaraj. "On uncertainty evaluation of contaminant migration through clayey barriers." Canadian Geotechnical Journal 31, no. 5 (1994): 637–48. http://dx.doi.org/10.1139/t94-076.

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This paper presents a methodology to estimate parameters and to make predictions with quantified uncertainty for an advective–diffusive transport of nonreactive species and low-concentration reactive species through saturated porous media. The methodology is put in the framework of inverse and forward analyses. The maximum-likelihood method (or the weighted least square method) is employed in the inverse analysis, whereas the first-order second-moment method is used in the forward analysis. The methodology facilitates the quantification of uncertainty in the estimated parameters as well as in

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11

Sevinç Şengör, S., Nicolas F. Spycher, Timothy R. Ginn, Rajesh K. Sani, and Brent Peyton. "Biogeochemical reactive–diffusive transport of heavy metals in Lake Coeur d’Alene sediments." Applied Geochemistry 22, no. 12 (2007): 2569–94. http://dx.doi.org/10.1016/j.apgeochem.2007.06.011.

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12

Silva, Marcus Vinicius de Assis, Márcio Aredes Martins, Leda Rita D'Antonino Faroni, Jaime Daniel Bustos Vanegas, and Adalberto Hipólito de Sousa. "CFD modelling of diffusive-reactive transport of ozone gas in rice grains." Biosystems Engineering 179 (March 2019): 49–58. http://dx.doi.org/10.1016/j.biosystemseng.2018.12.010.

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13

Kempka, Thomas, Svenja Steding, and Michael Kühn. "Verification of TRANSPORT Simulation Environment coupling with PHREEQC for reactive transport modelling." Advances in Geosciences 58 (November 3, 2022): 19–29. http://dx.doi.org/10.5194/adgeo-58-19-2022.

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Abstract. Many types of geologic subsurface utilisation are associated with fluid and heat flow as well as simultaneously occurring chemical reactions. For that reason, reactive transport models are required to understand and reproduce the governing processes. In this regard, reactive transport codes must be highly flexible to cover a wide range of applications, while being applicable by users without extensive programming skills at the same time. In this context, we present an extension of the Open Source and Open Access TRANSPORT Simulation Environment, which has been coupled with the geoche

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14

Rembert, Flore, Damien Jougnot, Linda Luquot, and Roger Guérin. "Interpreting Self-Potential Signal during Reactive Transport: Application to Calcite Dissolution and Precipitation." Water 14, no. 10 (2022): 1632. http://dx.doi.org/10.3390/w14101632.

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Geochemistry and reactive transport play a critical role in many fields. In particular, calcite dissolution and precipitation are chemical processes occurring ubiquitously in the Earth’s subsurface. Therefore, understanding and quantifying them are necessary for various applications (e.g., water resources, reservoirs, geo-engineering). These fundamental geochemical processes can be monitored using the self-potential (SP) method, which is sensitive to pore space changes, water mineralization, and mineral–solution interactions. However, there is a lack of physics-based models linking geochemical

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15

Fernández, Ariel, and Oktay Sinanoğlu. "A Reactive System with Diffusive Transport Displaying Two Different Symmetry-Breaking Dissipative Structures." Zeitschrift für Naturforschung A 40, no. 6 (1985): 611–18. http://dx.doi.org/10.1515/zna-1985-0612.

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An open reactive system is modelled by coupling the chemical kinetics to diffuse transport. This system operates far from the regime of linear irreversible thermodynamics. The kinetics correspond to a certain region in the parameter space of the Oregonator for which two symmetrybreakdowns occur: a) A periodic orbit contained in an unstable manifold of the phase space. This solution is invariant under time-translations generated by a period. b) A spatial stationary dissipative structure. This solution is invariant under a subgroup of the space symmetry group. The initial time periodicity of the

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16

Schneider, R., A. Rai, A. Mutzke, M. Warrier, E. Salonen, and K. Nordlund. "Dynamic Monte-Carlo modeling of hydrogen isotope reactive–diffusive transport in porous graphite." Journal of Nuclear Materials 367-370 (August 2007): 1238–42. http://dx.doi.org/10.1016/j.jnucmat.2007.03.226.

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17

Rai, A., M. Warrier, and R. Schneider. "A hierarchical multi-scale method to simulate reactive–diffusive transport in porous media." Computational Materials Science 46, no. 2 (2009): 469–78. http://dx.doi.org/10.1016/j.commatsci.2009.03.038.

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18

Chen, Ping, Luc R. Van Loon, Steffen Koch, Peter Alt-Epping, Tobias Reich, and Sergey V. Churakov. "Reactive transport modeling of diffusive mobility and retention of TcO4− in Opalinus Clay." Applied Clay Science 251 (April 2024): 107327. http://dx.doi.org/10.1016/j.clay.2024.107327.

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19

Piazza, Stefania, Mariacrocetta Sambito, and Gabriele Freni. "Analysis of Optimal Sensor Placement in Looped Water Distribution Networks Using Different Water Quality Models." Water 15, no. 3 (2023): 559. http://dx.doi.org/10.3390/w15030559.

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Urban looped water distribution systems are highly vulnerable to water quality issues. They could be subject to contamination events (accidental or deliberate), compromising the water quality inside them and causing damage to the users’ health. An efficient monitoring system must be developed to prevent this, supported by a suitable model for assessing water quality. Currently, several studies use advective–reactive models to analyse water quality, neglecting diffusive transport, which is claimed to be irrelevant in turbulent flows. Although this may be true in simple systems, such as linear t

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20

Fazeli, Hossein, Ravi Patel, and Helge Hellevang. "Effect of Pore-Scale Mineral Spatial Heterogeneity on Chemically Induced Alterations of Fractured Rock: A Lattice Boltzmann Study." Geofluids 2018 (July 18, 2018): 1–28. http://dx.doi.org/10.1155/2018/6046182.

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Fractures are the main flow path in rocks with very low permeability, and their hydrodynamic properties might change due to interaction with the pore fluid or injected fluid. Existence of minerals with different reactivities and along with their spatial distribution can affect the fracture geometry evolution and correspondingly its physical and hydrodynamic properties such as porosity and permeability. In this work, evolution of a fracture with two different initial spatial mineral heterogeneities is studied using a pore-scale reactive transport lattice Boltzmann method- (LBM-) based model. Th

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21

Santschi, Peter H., Urs P. Nyffeler, Robert F. Anderson, Sherry L. Schiff, Patricia O'hara, and Raymond H. Hesslein. "Response of Radioactive Trace Metals to Acid–Base Titrations in Controlled Experimental Ecosystems: Evaluation of Transport Parameters for Application to Whole-Lake Radiotracer Experiments." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 1 (1986): 60–77. http://dx.doi.org/10.1139/f86-008.

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Radiotracer experiments were carried out in 20 enclosures located in two lakes at the Experimental Lakes Area (ELA), northwestern Ontario, to study pathways of trace metal removal from the water column of shallow lakes. Two removal mechanisms were characterized: (1) sorption to and subsequent transport with falling particles and (2) direct adsorption to surface sediments. Our approach was to measure independently the kinetics of radiotracer sorption, fluxes and concentrations for particles, particle settling velocities, and the "equivalent stagnant boundary film." Our radiotracer results enabl

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22

Kulenkampff, Johannes, Till Bollermann, Maria A. Cardenas Rivera, and Cornelius Fischer. "Transport in tight material enlightened by process tomography." Safety of Nuclear Waste Disposal 1 (November 10, 2021): 293–94. http://dx.doi.org/10.5194/sand-1-293-2021.

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Abstract. The analysis of fluid transport through tight barrier materials poses two major challenges: (i) Long equilibration periods require long minimum experiment durations, and (ii) the fluid transport frequently results in complex pattern formation. Measuring times that are too short may feign transport rates that are too low; intact homogeneous samples are often missing problematic features, e.g. fractures. Both issues are detected and analyzed by using process tomography techniques, thereby providing an improved understanding of transport processes in complex materials. We thus continuou

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23

Våg, Jan E., Hong Wang, and Helge K. Dahle. "Eulerian-Lagrangian localized adjoint methods for systems of nonlinear advective-diffusive-reactive transport equations." Advances in Water Resources 19, no. 5 (1996): 297–315. http://dx.doi.org/10.1016/0309-1708(96)00006-1.

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24

Thomas, Hywel Rhys, Majid Sedighi, and Philip James Vardon. "Diffusive Reactive Transport of Multicomponent Chemicals Under Coupled Thermal, Hydraulic, Chemical and Mechanical Conditions." Geotechnical and Geological Engineering 30, no. 4 (2012): 841–57. http://dx.doi.org/10.1007/s10706-012-9502-9.

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25

Yan, Zhifeng, Xiaofan Yang, Siliang Li, and Markus Hilpert. "Two-relaxation-time lattice Boltzmann method and its application to advective-diffusive-reactive transport." Advances in Water Resources 109 (November 2017): 333–42. http://dx.doi.org/10.1016/j.advwatres.2017.09.003.

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26

Poonoosamy, Jenna, Renchao Lu, Mara Iris Lönartz, Guido Deissmann, Dirk Bosbach, and Yuankai Yang. "A Lab on a Chip Experiment for Upscaling Diffusivity of Evolving Porous Media." Energies 15, no. 6 (2022): 2160. http://dx.doi.org/10.3390/en15062160.

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Reactive transport modelling is a powerful tool to assess subsurface evolution in various energy-related applications. Upscaling, i.e., accounting for pore scale heterogeneities into larger scale analyses, remains one of the biggest challenges of reactive transport modelling. Pore scale simulations capturing the evolutions of the porous media over a wide range of Peclet and Damköhler number in combination with machine learning are foreseen as an efficient methodology for upscaling. However, the accuracy of these pore scale models needs to be tested against experiments. In this work, we develop

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27

Karimi, S., and K. B. Nakshatrala. "Do Current Lattice Boltzmann Methods for Diffusion and Advection-Diffusion Equations Respect Maximum Principle and the Non-Negative Constraint?" Communications in Computational Physics 20, no. 2 (2016): 374–404. http://dx.doi.org/10.4208/cicp.181015.270416a.

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AbstractThe Lattice Boltzmann Method (LBM) has established itself as a popular numerical method in computational fluid dynamics. Several advancements have been recently made in LBM, which include multiple-relaxation-time LBM to simulate anisotropic advection-diffusion processes. Because of the importance of LBM simulations for transport problems in subsurface and reactive flows, one needs to study the accuracy and structure preserving properties of numerical solutions under the LBM. The solutions to advective-diffusive systems are known to satisfy maximum principles, comparison principles, the

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28

Kortunov, Evgenii, Chuanhe Lu, Richard Amos, and Peter Grathwohl. "Redox hydrogeochemistry of organic rich floodplain exemplified by Ammer river." E3S Web of Conferences 98 (2019): 09014. http://dx.doi.org/10.1051/e3sconf/20199809014.

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Diffusive groundwater pollution caused by agricultural and atmospheric inputs is a pressing issue in environmental management worldwide. Various researchers have studied nitrate contamination since the substantial increase of nitrogen fertilization in agriculture starting in the second half of the 20th century. This study addresses large scale reactive solute transport in typical landscapes and aquifers exemplified by geological analogues of southwestern Germany.. Fate of nitrate and other solutes (e.g. agricultural nitrate, ammonium, natural sulfate and dissolved organic carbon) was studied i

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29

Jenni, Andreas, and Urs Mäder. "Reactive Transport Simulation of Low-pH Cement Interacting with Opalinus Clay Using a Dual Porosity Electrostatic Model." Minerals 11, no. 7 (2021): 664. http://dx.doi.org/10.3390/min11070664.

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Strong chemical gradients between clay and concrete porewater lead to diffusive transport across the interface and subsequent mineral reactions in both materials. These reactions may influence clay properties such as swelling behaviour, permeability or radionuclide retention, which are relevant for the safety of a radioactive waste repository. Different cement types lead to different interactions with Opalinus Clay (OPA), which must be understood to choose the most suitable material. The consideration of anion-depleted porosity due to electrostatic repulsion in clay modelling substantially inf

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30

Poonoosamy, Jenna, Martina Klinkenberg, Mara Lönartz, et al. "Combining innovative experimental approaches and cross-scale reactive transport modelling for assessing coupled hydrogeochemical processes at interfaces in deep geological repositories for radioactive waste." Safety of Nuclear Waste Disposal 1 (November 10, 2021): 105–7. http://dx.doi.org/10.5194/sand-1-105-2021.

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Abstract. Deep geological repositories with a multi-barrier concept are foreseen by various countries for the disposal of high-level radioactive waste. A reliable and consistent assessment of the safety of these repositories over time scales of some hundred thousand years requires an advancement of process understanding. Simulation tools need to be developed for a close-to-reality description of repository evolution scenarios. This is especially required to resolve the challenging task of comparing and assessing the safety of different repository concepts in different host rocks within the Ger

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31

Sangani, Ashok S. "Effective reaction rate on a heterogeneous surface." Journal of Fluid Mechanics 830 (September 29, 2017): 350–68. http://dx.doi.org/10.1017/jfm.2017.588.

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We examine the problem of prescribing the macroscale boundary condition to the solute convective–diffusive mass transport equation at a heterogeneous surface consisting of reactive circular disks distributed uniformly on a non-reactive surface. The reaction rate at the disks is characterized by a first-order kinetics. This problem was examined by Shah & Shaqfeh (J. Fluid Mech., vol. 782, 2015, pp. 260–299) who obtained the boundary condition in terms of an effective first-order rate constant, which they determined as a function of the Péclet number $Pe=\dot{\unicode[STIX]{x1D6FE}}a^{2}/D$,

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32

SCHULZ, RAPHAEL. "Degenerate equations in a diffusion–precipitation model for clogging porous media." European Journal of Applied Mathematics 31, no. 6 (2019): 1050–69. http://dx.doi.org/10.1017/s0956792519000391.

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In this article, we consider diffusive transport of a reactive substance in a saturated porous medium including variable porosity. Thereby, the evolution of the microstructure is caused by precipitation of the transported substance. We are particularly interested in analysing the model when the equations degenerate due to clogging. Introducing an appropriate weighted function space, we are able to handle the degeneracy and obtain analytical results for the transport equation. Also the decay behaviour of this solution with respect to the porosity is investigated. There a restriction on the deca

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33

Gahn, Markus, and Maria Neuss-Radu. "Singular Limit for Reactive Diffusive Transport Through an Array of Thin Channels in case of Critical Diffusivity." Multiscale Modeling & Simulation 19, no. 4 (2021): 1573–600. http://dx.doi.org/10.1137/21m1390505.

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34

Chapman, Steven, Beth Parker, Tom Al, et al. "Field, Laboratory and Modeling Evidence for Strong Attenuation of a Cr(VI) Plume in a Mudstone Aquifer Due to Matrix Diffusion and Reaction Processes." Soil Systems 5, no. 1 (2021): 18. http://dx.doi.org/10.3390/soilsystems5010018.

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This study uses a combination of conventional and high resolution field and laboratory methods to investigate processes causing attenuation of a hexavalent chromium (Cr(VI)) plume in sedimentary bedrock at a former industrial facility. Groundwater plume Cr(VI) concentrations decline by more than three orders of magnitude over a 900 m distance down gradient from the site. Internal plume concentrations generally exhibit stable to declining trends due to diffusive and reactive transport in the low permeability matrix as fluxes from the contamination source dissipate due to natural depletion proce

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35

Albert, Mary R. "Effects of snow and firn ventilation on sublimation rates." Annals of Glaciology 35 (2002): 52–56. http://dx.doi.org/10.3189/172756402781817194.

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AbstractVapor transport in snow and firn plays a key role in post-depositional changes of many reactive species, in mass and energy balance of large snow-covered areas, and in metamorphic changes of the crystal structure of the snow itself. While conventional estimates of vapor transport and sublimation rate are based on diffusion of water vapor from the snow surface to the atmosphere, ventilation (airflow through interstitial pore spaces) in snow and firn can affect the top several meters of firn, yet the effects of ventilation on sublimation rates in firn have not been previously investigate

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36

Warrier, M., A. Rai, and R. Schneider. "A time dependent model to study the effect of surface roughness on reactive–diffusive transport in porous media." Journal of Nuclear Materials 390-391 (June 2009): 203–6. http://dx.doi.org/10.1016/j.jnucmat.2009.01.168.

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37

Zhou, Andrew F., Elluz Pacheco, Badi Zhou, and Peter X. Feng. "Size-Dependent Electrical Transport Properties in Conducting Diamond Nanostripes." Nanomaterials 11, no. 7 (2021): 1765. http://dx.doi.org/10.3390/nano11071765.

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With the advances in nanofabrication technology, horizontally aligned and well-defined nitrogen-doped ultrananocrystalline diamond nanostripes can be fabricated with widths in the order of tens of nanometers. The study of the size-dependent electron transport properties of these nanostructures is crucial to novel electronic and electrochemical applications. In this paper, 100 nm thick n-type ultrananocrystalline diamond thin films were synthesized by microwave plasma-enhanced chemical vapor deposition method with 5% N2 gas in the plasma during the growth process. Then the nanostripes were fabr

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38

Zhang, Jie, Elisabeth Larsen Kolstad, Wenxin Zhang, Iris Vogeler, and Søren O. Petersen. "Modeling coupled nitrification–denitrification in soil with an organic hotspot." Biogeosciences 20, no. 18 (2023): 3895–917. http://dx.doi.org/10.5194/bg-20-3895-2023.

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Abstract. The emission of nitrous oxide (N2O) from agricultural soils to the atmosphere is a significant contributor to anthropogenic greenhouse gas emissions. The recycling of organic nitrogen (N) in manure and crop residues may result in spatiotemporal variability in N2O production and soil efflux which is difficult to capture by process-based models. We propose a multi-species, reactive transport model to provide detailed insight into the spatiotemporal variability in nitrogen (N) transformations around such N2O hotspots, which consists of kinetic reactions of soil respiration, nitrificatio

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39

Dietrich, Joseph P., Frank J. Loge, Timothy R. Ginn, and Hakan Başagˇaogˇlu. "Inactivation of particle-associated microorganisms in wastewater disinfection: Modeling of ozone and chlorine reactive diffusive transport in polydispersed suspensions." Water Research 41, no. 10 (2007): 2189–201. http://dx.doi.org/10.1016/j.watres.2007.01.038.

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40

Anjum, Aisha, Sadaf Masood, Muhammad Farooq, Naila Rafiq, and Muhammad Yousaf Malik. "Investigation of binary chemical reaction in magnetohydrodynamic nanofluid flow with double stratification." Advances in Mechanical Engineering 13, no. 5 (2021): 168781402110162. http://dx.doi.org/10.1177/16878140211016264.

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This article addresses MHD nanofluid flow induced by stretched surface. Heat transport features are elaborated by implementing double diffusive stratification. Chemically reactive species is implemented in order to explore the properties of nanofluid through Brownian motion and thermophoresis. Activation energy concept is utilized for nano liquid. Further zero mass flux is assumed at the sheet’s surface for better and high accuracy of the out-turn. Trasnformations are used to reconstruct the partial differential equations into ordinary differential equations. Homotopy analysis method is utiliz

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41

Dejam, Morteza. "Advective-diffusive-reactive solute transport due to non-Newtonian fluid flows in a fracture surrounded by a tight porous medium." International Journal of Heat and Mass Transfer 128 (January 2019): 1307–21. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.09.061.

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42

Chen, Jing, Shuya Li, Ye Zhang, et al. "A Reloadable Self-Healing Hydrogel Enabling Diffusive Transport of C-Dots Across Gel-Gel Interface for Scavenging Reactive Oxygen Species." Advanced Healthcare Materials 6, no. 21 (2017): 1700746. http://dx.doi.org/10.1002/adhm.201700746.

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43

Begley, S. M., and M. Q. Brewster. "Radiative Properties of MoO3 and Al Nanopowders From Light-Scattering Measurements." Journal of Heat Transfer 129, no. 5 (2006): 624–33. http://dx.doi.org/10.1115/1.2712476.

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The combustion behavior of nanometer-scale energetic materials is much different than micron size or larger materials. Burning rates up to 950 m∕s have been reported for a thermite composition of nanosized aluminum and molybdenum trioxide. The energy transport mechanisms in the reactive wave are still uncertain. The relative contribution of radiation has not yet been quantified. To do so analytically requires dependent scattering theory, which has not yet been fully developed. Radiative properties for nanoaluminum and nanomolybdenum-trioxide were obtained experimentally by comparing light scat

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44

Barcellos da Rosa, M., W. Behnke, and C. Zetzsch. "Study of the heterogeneous reaction of O<sub>3</sub> with CH<sub>3</sub>SCH<sub>3</sub> using the wetted-wall flowtube technique." Atmospheric Chemistry and Physics Discussions 3, no. 2 (2003): 1949–71. http://dx.doi.org/10.5194/acpd-3-1949-2003.

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Abstract. This work presents the heterogeneous kinetics of the reaction of CH3SCH3 (dimethyl sulphide, DMS) with O3 (ozone) in aqueous solution at different ionic strengths (0, 0.1 and 1.0 M NaCl) using the wetted-wall flowtube (WWFT) technique. Henry's law coefficients of DMS were determined on pure water and on different concentrations of NaCl (0.1 M–4.0 M) in the WWFT from UV spectrophotometric measurements of DMS in the gas phase using a numerical transport model of phase exchange to be H (M atm−1) = 2.16±0.5 at 274.4 K, 1.47±0.3 at 283.4 K, 0.72±0.2 at 291 K, 0.57±0.1 at 303.4 K and 0.33±

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Lehto, Niklas J., William Davison, and Hao Zhang. "The use of ultra-thin diffusive gradients in thin-films (DGT) devices for the analysis of trace metal dynamics in soils and sediments: a measurement and modelling approach." Environmental Chemistry 9, no. 4 (2012): 415. http://dx.doi.org/10.1071/en12036.

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Environmental contextThe recently developed diffusive gradients in thin-films (DGT)-planar optode sandwich probe uses extremely thin resin binding layers, separated from the medium of interest by a very thin material diffusive layer. This work investigates how these changes to the physical nature of a DGT probe are likely to change the interpretation of trace metal measurements in solutions, soils and sediments by using a combination of experimental measurements in well characterised solutions and spiked soils, and advanced reactive transport modelling. AbstractThe interpretation of diffusive

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Romero, R., and C. Ramis. "A numerical study of the transport and diffusion of coastal pollutants during the breeze cycle in the Island of Mallorca." Annales Geophysicae 14, no. 3 (1996): 351–63. http://dx.doi.org/10.1007/s00585-996-0351-9.

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Abstract. An Eulerian study of the distribution over the Island of Mallorca of a non-reactive pollutant (SO2) emitted from an electric power plant operating at present on the north coast is performed using a meso-β numerical model, paying particular attention to the diffusive physical mechanisms. The study is applied to the conditions of sea-land breeze development. This is a local circulation that dominates the flow during the summer and favours transporting pollutants from the coast toward the centre of the island. Results indicate that values of the ground-level concentration higher than 5

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Shi, Wenguang, Quanrong Wang, Hongbin Zhan, Renjie Zhou, and Haitao Yan. "A general model of radial dispersion with wellbore mixing and skin effects." Hydrology and Earth System Sciences 27, no. 9 (2023): 1891–908. http://dx.doi.org/10.5194/hess-27-1891-2023.

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Abstract. The mechanism of radial dispersion is essential for understanding reactive transport in the subsurface and for estimating the aquifer parameters required in the optimization design of remediation strategies. Many previous studies demonstrated that the injected solute firstly experienced a mixing process in the injection wellbore, then entered a skin zone after leaving the injection wellbore, and finally moved into the aquifer through advective, diffusive, dispersive, and chemical–biological–radiological processes. In this study, a physically based new model and the associated analyti

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Larsbo, M., J. Koestel, and N. Jarvis. "Controls of macropore network characteristics on preferential solute transport." Hydrology and Earth System Sciences Discussions 11, no. 8 (2014): 9551–88. http://dx.doi.org/10.5194/hessd-11-9551-2014.

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Abstract. In this study we examined the relationships between macropore network characteristics, hydraulic properties and state variables and measures of preferential transport in undisturbed columns sampled from four agricultural topsoils of contrasting texture and structure. Macropore network characteristics were computed from 3-dimensional X-ray tomography images of the soil pore system. Non-reactive solute transport experiments were carried out at five steady-state water flow rates from 2 to 12 mm h−1. The degree of preferential transport was evaluated by the normalised 5% solute arrival t

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Barcellos da Rosa, M., W. Behnke, and C. Zetzsch. "Study of the heterogeneous reaction of O<sub>3</sub> with CH<sub>3</sub>SCH<sub>3</sub> using the wetted-wall flowtube technique." Atmospheric Chemistry and Physics 3, no. 5 (2003): 1665–73. http://dx.doi.org/10.5194/acp-3-1665-2003.

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Abstract. This work presents the heterogeneous kinetics of the reaction of CH3SCH3 (dimethyl sulphide, DMS) with O3 (ozone) in aqueous solutions of different ionic strengths (0, 0.1 and 1.0M NaCl) using the wetted-wall flowtube (WWFT) technique. Henry's law coefficients of DMS on pure water and on different concentrations of NaCl (0.1M - 4.0M) in the WWFT from UV spectrophotometric measurements of DMS in the gas phase, using a numerical transport model of phase exchange, were determined to be H ±s (M atm-1) = 2.16±0.5 at 274.4 K, 1.47±0.3 at 283.4 K, 0.72±0.2 at 291 K, 0.57±0.1 at 303.4 K and

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Daunys, Forster, Schiedek, Olenin, and Zettler. "Effect of Species Invasion on Transport of Solutes at Different Levels of Soft Sediment Macrofauna Diversity: Results from an Experimental Approach." Water 11, no. 8 (2019): 1544. http://dx.doi.org/10.3390/w11081544.

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Different irrigation or ventilation strategies by macrofauna may provide a competitive advantage to tolerant species invading impacted benthic systems and alter benthic-pelagic coupling. To comparatively analyze the effects of an exotic and a native polychaete burrower on sediment-water exchanges, two laboratory experiments were performed. In the first experiment, the invasive spionid polychaete Marenzelleria neglecta was added to defaunated sediments and fluxes of the inert tracer (bromide, Br−) were measured to quantify the effects of irrigation by the worm on the tracer transport. In the se

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