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Zeitschriftenartikel zum Thema „Diffusion experiments“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Divya, V. D., U. Ramamurty, and Aloke Paul. "Diffusion in Co-Ni System Studied by Multifoil Technique." Defect and Diffusion Forum 312-315 (April 2011): 466–71. http://dx.doi.org/10.4028/www.scientific.net/ddf.312-315.466.

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Diffusion couple experiments were performed in the Co-Ni binary system for determining inter-, impurity- and intrinsic-diffusion coefficients in the temperature range of 1050 - 1250°C. The activation energy and pre-exponential factor estimated for interdiffusion do not vary significantly with composition. The activation energy calculated for impurity diffusion experiments shows is higher than . Intrinsic diffusion coefficients estimated from the multifoil experiment show that Ni is the fastest diffusing species in this system.

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2

Bodet, J. M., J. Ross, and C. Vidal. "Experiments on phase diffusion waves." Journal of Chemical Physics 86, no. 8 (1987): 4418–24. http://dx.doi.org/10.1063/1.452713.

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3

Mathiak, G., E. Plescher, and R. Willnecker. "Vibrational effects on diffusion experiments." Microgravity - Science and Technology 16, no. 1-4 (2005): 295–300. http://dx.doi.org/10.1007/bf02945994.

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4

Cherniak, Daniele J., and E. Bruce Watson. "Al and Si diffusion in rutile." American Mineralogist 104, no. 11 (2019): 1638–49. http://dx.doi.org/10.2138/am-2019-7030.

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Abstract Diffusion of Al and Si has been measured in synthetic and natural rutile under anhydrous conditions. Experiments used Al2O3 or Al2O3-TiO2 powder mixtures for Al diffusant sources, and SiO2-TiO2 powder mixtures or quartz-rutile diffusion couples for Si. Experiments were run in air in crimped Pt capsules, or in sealed silica glass ampoules with solid buffers (to buffer at NNO or IW). Al profiles were measured with Nuclear Reaction Analysis (NRA) using the reaction 27Al(p,γ)28Si. Rutherford Backscattering spectrometry (RBS) was used to measure Si diffusion profiles, with RBS also used in

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5

Palcut, Marián, Kjell Wiik, and Tor Grande. "Cation Self-Diffusion in LaCoO3and La2CoO4Studied by Diffusion Couple Experiments." Journal of Physical Chemistry B 111, no. 9 (2007): 2299–308. http://dx.doi.org/10.1021/jp068343s.

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6

Petelin, A., S. Peteline, and O. Oreshina. "Triple Junction Diffusion: Experiments and Models." Defect and Diffusion Forum 194-199 (April 2001): 1265–72. http://dx.doi.org/10.4028/www.scientific.net/ddf.194-199.1265.

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7

Patzek, Tad W. "Fick’s Diffusion Experiments Revisited —Part I." Advances in Historical Studies 03, no. 04 (2014): 194–206. http://dx.doi.org/10.4236/ahs.2014.34017.

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8

Xia, Qunke, Daogong Chen, S. Carpenter, Xiachen Zhi, Rucheng Wang, and Hao Cheng. "Hydrogen diffusion in clinopyroxene: dehydration experiments." Science in China Series D: Earth Sciences 43, no. 6 (2000): 561–68. http://dx.doi.org/10.1007/bf02879499.

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9

Griesche, Axel, F. Garcia-Moreno, M. P. Macht, and Günter Frohberg. "Chemical Diffusion Experiments in AlNiCe-Melts." Materials Science Forum 508 (March 2006): 567–72. http://dx.doi.org/10.4028/www.scientific.net/msf.508.567.

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The long-capillary method was used to measure chemical diffusion in molten AlNiCe alloys. The interdiffusion coefficients were determined for a mean concentration of Al87Ni10Ce3 at 1273 K and for a mean concentration of Al77Ni20Ce3 at 1373 K. The absence of major convection disturbances and of macro-segregation was demonstrated by time-dependent diffusion measurements. An in-situ x-ray monitoring technique for real-time concentration profile determination is presented.

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10

Chen, Aidi, Charles S. Johnson,, Melissa Lin, and Michael J. Shapiro. "Chemical Exchange in Diffusion NMR Experiments." Journal of the American Chemical Society 120, no. 35 (1998): 9094–95. http://dx.doi.org/10.1021/ja9809410.

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11

Wang, Dezheng, Fanxing Li, and Xueliang Zhao. "Diffusion limitation in fast transient experiments." Chemical Engineering Science 59, no. 22-23 (2004): 5615–22. http://dx.doi.org/10.1016/j.ces.2004.07.111.

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12

Lorenz, Christine H., David R. Pickens, Donald B. Puffer, and Ronald R. Price. "Magnetic resonance diffusion/perfusion phantom experiments." Magnetic Resonance in Medicine 19, no. 2 (1991): 254–60. http://dx.doi.org/10.1002/mrm.1910190211.

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13

Cherniak, D. J., and E. B. Watson. "Ti diffusion in feldspar." American Mineralogist 105, no. 7 (2020): 1040–51. http://dx.doi.org/10.2138/am-2020-7272.

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Abstract Chemical diffusion of Ti has been measured in natural K-feldspar and plagioclase. The sources of diffusant used were TiO2 powders or pre-annealed mixtures of TiO2 and Al2O3. Experiments were run in crimped Pt capsules in air or in sealed silica glass capsules with solid buffers (to buffer at NNO). Rutherford backscattering spectrometry (RBS) was used to measure Ti diffusion profiles. From these measurements, the following Arrhenius relations are obtained for diffusion normal to (001):For oligoclase, over the temperature range 750–1050 °C:DOlig=6.67×10-12exp(-207±31kJ/mol/RT)m2s-1For l

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14

Benga, Gheorghe, Octavian Popescu, and Victor I. Pop. "Water exchange through erythrocyte membranes: p-choloromercuribenzene sulfonate inhibition of water diffusion in ghosts studied by a nuclear magnetic resonance technique." Bioscience Reports 5, no. 3 (1985): 223–28. http://dx.doi.org/10.1007/bf01119591.

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A comparison of water diffusion in human erythrocytes and ghosts revealed a longer relaxation time in ghosts, A comparison of water diffusion in human erythrocytes and ghosts revealed a longer relaxation time in ghosts, corresponding to a decreased exchange rate. However, the diffusional permeability of ghosts was not significantly different from that of erythrocytes. The changes in water diffusion following exposure to p-chloromercuribenzene sulfonate (PCMBS) have been studied on ghosts suspended in isotonic solutions. It was found that a significant inhibitory effect of PCMBS on water diffus

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15

Doremus, R. H. "Diffusion of water in crystalline and glassy oxides: Diffusion–reaction model." Journal of Materials Research 14, no. 9 (1999): 3754–58. http://dx.doi.org/10.1557/jmr.1999.0508.

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Diffusion of water in oxides is modeled as resulting from the solution and diffusion of molecular water in the oxide. This dissolved water can react and exchange with the oxide network to form immobile OH groups and different hydrogen and oxygen isotopes in the oxide. The model agrees with many experiments on water diffusion in oxides. The activation energy for diffusion of water in oxides correlates with the structural openness of the oxide, suggesting that molecular water is the diffusing species.

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16

Kang, Stephen Dongmin, Jimmy Jiahong Kuo, Nidhi Kapate, Jihyun Hong, Joonsuk Park, and William C. Chueh. "Galvanostatic Intermittent Titration Technique Reinvented: Part II. Experiments." Journal of The Electrochemical Society 168, no. 12 (2021): 120503. http://dx.doi.org/10.1149/1945-7111/ac3939.

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Following a critical review of the galvanostatic intermittent titration technique in Part I, here we experimentally demonstrate how to extract chemical diffusivity with a modified method. We prepare dense bulk samples that ensure diffusion-limitation. We utilize the scaling with t relax + τ − t relax (t relax: relaxation time; τ: pulse duration), avoiding problems with composition-dependent overpotentials. The equilibrium Nernst voltage is measured separately using small porous particles. This separation between the diffusion measurement and the titration procedure is critical for performing e

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17

Johari, H., K. J. Desabrais, and J. C. Hermanson. "Experiments on Impulsively Started Jet Diffusion Flames." AIAA Journal 35, no. 6 (1997): 1012–17. http://dx.doi.org/10.2514/2.188.

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18

Cowern, N. E. B., G. F. A. van de Walle, D. J. Gravesteijn, and C. J. Vriezema. "Experiments on atomic-scale mechanisms of diffusion." Physical Review Letters 67, no. 2 (1991): 212–15. http://dx.doi.org/10.1103/physrevlett.67.212.

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19

Lambert, Nevin A. "Uncoupling diffusion and binding in FRAP experiments." Nature Methods 6, no. 3 (2009): 183. http://dx.doi.org/10.1038/nmeth0309-183a.

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20

Kosugi, Atsushi, Tomoki Furudate, and Satoshi Fukui. "Wind Tunnel Experiments of Atmospheric Turbulent Diffusion." Proceedings of Conference of Hokkaido Branch 2016.54 (2016): 71–72. http://dx.doi.org/10.1299/jsmehokkaido.2016.54.71.

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21

KOSUGI, Atushi, Hideharu MAKITA, and Kenji SAITO. "Wind Tunnel Experiments of Atmospheric Turbulent Diffusion." Proceedings of the JSME annual meeting 2000.4 (2000): 221–22. http://dx.doi.org/10.1299/jsmemecjo.2000.4.0_221.

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22

Jansson, Mats, and Trygve E. Eriksen. "In situ anion diffusion experiments using radiotracers." Journal of Contaminant Hydrology 68, no. 3-4 (2004): 183–92. http://dx.doi.org/10.1016/s0169-7722(03)00149-9.

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23

Ragan, R. J., and D. M. Schwarz. "Castaing instabilities in longitudinal spin-diffusion experiments." Journal of Low Temperature Physics 109, no. 5-6 (1997): 775–99. http://dx.doi.org/10.1007/bf02435489.

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24

Johari, H., K. J. Desabrais, and J. C. Hermanson. "Experiments on impulsively started jet diffusion flames." AIAA Journal 35 (January 1997): 1012–17. http://dx.doi.org/10.2514/3.13620.

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25

Grzywna, Zbigniew J., and Aleksander M. Simon. "Transient diffusion experiments in catalytically active membranes." Chemical Engineering Science 46, no. 1 (1991): 335–42. http://dx.doi.org/10.1016/0009-2509(91)80142-l.

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26

Momot, Konstantin I., and Philip W. Kuchel. "PFG NMR diffusion experiments for complex systems." Concepts in Magnetic Resonance Part A 28A, no. 4 (2006): 249–69. http://dx.doi.org/10.1002/cmr.a.20056.

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27

Price, Peter E., Sharon Wang, and Ilyess Hadj Romdhane. "Extracting effective diffusion parameters from drying experiments." AIChE Journal 43, no. 8 (1997): 1925–34. http://dx.doi.org/10.1002/aic.690430802.

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28

Chapman, B. E., and P. W. Kuchel. "Sensitivity in Heteronuclear Multiple-Quantum Diffusion Experiments." Journal of Magnetic Resonance, Series A 102, no. 1 (1993): 105–9. http://dx.doi.org/10.1006/jmra.1993.1075.

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29

Mathiak, Gerhard, and Rainer Willnecker. "Damping of Convection in Liquid Diffusion Experiments." International Journal of Materials Research 91, no. 11 (2000): 928–32. http://dx.doi.org/10.1515/ijmr-2000-911109.

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30

Baborová, Lucie, Eva Viglašová, and Dušan Vopálka. "Comparison of Sr Transport in Compacted Homoionous Na and Ca Bentonite Using a Planar Source Method Evaluated at Ideal and Non-Ideal Boundary Condition." Water 13, no. 11 (2021): 1520. http://dx.doi.org/10.3390/w13111520.

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With the aim to determine the influence of dominant interlayer cation on the sorption and diffusion properties of bentonite, diffusion experiments with Sr on the compacted homoionous Ca- and Na-forms of Czech natural Mg/Ca bentonite using the planar source method were performed. The bentonite was compacted to 1400 kg·m−3, and diffusion experiments lasted 1, 3 or 5 days. Two methods of apparent diffusion coefficient Da determination based on the analytical solution of diffusion equation for ideal boundary conditions in a linear form were compared and applied. The determined Da value for Ca-bent

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31

Nair, Ramachandran D. "Diffusion Experiments with a Global Discontinuous Galerkin Shallow-Water Model." Monthly Weather Review 137, no. 10 (2009): 3339–50. http://dx.doi.org/10.1175/2009mwr2843.1.

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Abstract A second-order diffusion scheme is developed for the discontinuous Galerkin (DG) global shallow-water model. The shallow-water equations are discretized on the cubed sphere tiled with quadrilateral elements relying on a nonorthogonal curvilinear coordinate system. In the viscous shallow-water model the diffusion terms (viscous fluxes) are approximated with two different approaches: 1) the element-wise localized discretization without considering the interelement contributions and 2) the discretization based on the local discontinuous Galerkin (LDG) method. In the LDG formulation the a

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32

Gkinis, Vasileios, Christian Holme, Emma C. Kahle, Max C. Stevens, Eric J. Steig, and Bo M. Vinther. "Numerical experiments on firn isotope diffusion with the Community Firn Model." Journal of Glaciology 67, no. 263 (2021): 450–72. http://dx.doi.org/10.1017/jog.2021.1.

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AbstractAdvances in analytical methods have made it possible to obtain high-resolution water isotopic data from ice cores. Their spectral signature contains information on the diffusion process that attenuated the isotopic signal during the firn densification process. Here, we provide a tool for estimating firn-diffusion rates that builds on the Community Firn Model. Our model requires two main inputs, temperature and accumulation, and it calculates the diffusion lengths for δ17O, δ18O and δD. Prior information on the isotopic signal of the precipitation is not a requirement. In combination wi

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33

Keller, Katharina, Mian Qi, Christoph Gmeiner, et al. "Intermolecular background decay in RIDME experiments." Physical Chemistry Chemical Physics 21, no. 16 (2019): 8228–45. http://dx.doi.org/10.1039/c8cp07815g.

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34

Ngai, Tungwai Leo, Da Tong Zhang, and Yuan Yuan Li. "A Study on Diffusion Wear of Machining Tool and Simulation by Diffusion Couple." Key Engineering Materials 353-358 (September 2007): 813–16. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.813.

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By choosing appropriate annealing temperature and annealing time, diffusion couples made of aluminum bronze and tool materials were prepared to simulate the diffusion and phase formation during the actual machining. These results were compared to those obtained from turning experiments. In agreement with results obtained from diffusion couple experiments, all turning experiments showed that major elements in both tool materials and workpiece diffused into their counterparts. The diffusion of C away from the tool will reduce the tool strength. It is helpful to use diffusion couple results to co

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35

Korolyuk, Volodymyr, and Dmytro Koroliouk. "Filtering of stationary Gaussian statistical experiments." Ukrainian Mathematical Bulletin 16, no. 3 (2019): 372–82. http://dx.doi.org/10.37069/1810-3200-2019-16-3-5.

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36

Harte, B., T. Taniguchi, and S. Chakraborty. "Diffusion in diamond. II. High-pressure-temperature experiments." Mineralogical Magazine 73, no. 2 (2009): 201–4. http://dx.doi.org/10.1180/minmag.2009.073.2.201.

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AbstractHigh-pressure-temperature (P-T) experiments were conducted in an attempt to determine the diffusion rates of C atoms in diamond, and the possibility of changes in the isotope compositions of diamond at high P-T in the Earth’s mantle. The starting material consisted of a polished plate of natural diamond (very largely 12C), which had been coated with 13C diamond by chemical-vapourdeposition to form a sharp interface between 12C and 13C diamond. Three experiments were performed at 1800, 2000 and 2300ºC, all at 7.7 GPa, for0.5 –20 h. Isotopic profiles obtained by ion microprobe before and

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37

Balcone-Boissard, Hélène, Don R. Baker, Benoit Villemant, Jean Cauzid, Georges Boudon, and E. Deloule. "Br diffusion in phonolitic melts: Comparison with fluorine and chlorine diffusion." American Mineralogist 105, no. 11 (2020): 1639–46. http://dx.doi.org/10.2138/am-2020-7372.

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Abstract Bromine diffusion was measured in two natural phonolitic melts: (1) a K2O-rich (~10 wt%) one synthesized from the white pumice phase of the 79 AD eruption of Vesuvius (Italy), and (2) a Na2O-rich (~10 wt%) one corresponding to the most differentiated melt of the 12 000 BC eruption of the Laacher See (Germany). Experiments were performed at 0.5 and 1.0 GPa, 1250 to 1450 °C, at anhydrous and hydrous (2.65 ± 0.35 wt% of dissolved water) conditions. Experiments conducted with the diffusion-couple technique in the piston cylinder were performed with only bromine diffusing and with the simu

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38

Jacops, Elke, Marc Aertsens, Norbert Maes, et al. "The Dependency of Diffusion Coefficients and Geometric Factor on the Size of the Diffusing Molecule: Observations for Different Clay-Based Materials." Geofluids 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/8652560.

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In order to investigate in more detail the relation between the size of diffusing molecules and their diffusion coefficients (and geometric factors), diffusion experiments with gases of different size and tritiated water (HTO) have been performed on different clayey samples (Boom Clay, Eigenbilzen Sands, Opalinus Clay, Callovo-Oxfordian Clay, and bentonite with different dry densities). We observed that, for unreactive gases in clayey materials, the effective diffusion coefficient varies with the size of the diffusing molecule and this variation can be described by an exponential or a power la

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39

Beale, John H., Rachel Bolton, Stephen A. Marshall, et al. "Successful sample preparation for serial crystallography experiments." Journal of Applied Crystallography 52, no. 6 (2019): 1385–96. http://dx.doi.org/10.1107/s1600576719013517.

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Serial crystallography, at both synchrotron and X-ray free-electron laser light sources, is becoming increasingly popular. However, the tools in the majority of crystallization laboratories are focused on producing large single crystals by vapour diffusion that fit the cryo-cooled paradigm of modern synchrotron crystallography. This paper presents several case studies and some ideas and strategies on how to perform the conversion from a single crystal grown by vapour diffusion to the many thousands of micro-crystals required for modern serial crystallography grown by batch crystallization. The

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40

Mendonça, Carlos A., Glaucia C. Dotti, Camila Maida, and Nilton Silva. "Tank experiments with borehole self-potential data." GEOPHYSICS 77, no. 1 (2012): D1—D6. http://dx.doi.org/10.1190/geo2011-0176.1.

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Despite their importance in the evaluation of petroleum and gas reservoirs, measurements of self-potential data under borehole conditions (well-logging) have found only minor applications in aquifer and waste-site characterization. This can be attributed to lower signals from the diffusion fronts in near-surface environments because measurements are made long after the drilling of the well, when concentration fronts are already disappearing. Proportionally higher signals arise from streaming potentials that prevent using simple interpretation models that assume signals from diffusion only. Our

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41

Zou, Xiaoling, Dejun Fan, and Ke Wang. "Effects of Dispersal for a Logistic Growth Population in Random Environments." Abstract and Applied Analysis 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/912579.

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We study a stochastic logistic model with diffusion between two patches in this paper. Using the definition of stationary distribution, we discuss the effect of dispersal in detail. If the species are able to have nontrivial stationary distributions when the patches are isolated, then they continue to do so for small diffusion rates. In addition, we use some examples and numerical experiments to reflect that diffusions are capable of both stabilizing and destabilizing a given ecosystem.

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42

Finsterbusch, Jürgen, and Martin A. Koch. "A tensor approach to double wave vector diffusion-weighting experiments on restricted diffusion." Journal of Magnetic Resonance 195, no. 1 (2008): 23–32. http://dx.doi.org/10.1016/j.jmr.2008.08.003.

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43

Brünjes, F., H. Barnewitz, and G. Kirchner. "Diffusion and diffusion-convection experiments for studying the sorption of radionuclides in soils." Czechoslovak Journal of Physics 49, S1 (1999): 175–80. http://dx.doi.org/10.1007/s10582-999-0024-5.

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44

Konakov, Valentin, Enno Mammen, and Jeannette Woerner. "Statistical convergence of Markov experiments to diffusion limits." Bernoulli 20, no. 2 (2014): 623–44. http://dx.doi.org/10.3150/12-bej500.

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45

Kosugi, Atsushi, and Masaaki Nishiyama. "232 Wind Tunnel Experiments of Atmospheric Turbulent Diffusion." Proceedings of Conference of Hokkaido Branch 2017.55 (2017): 43–44. http://dx.doi.org/10.1299/jsmehokkaido.2017.55.43.

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46

Savino, R., and R. Monti. "Improving diffusion-controlled microgravity experiments by facility orientation." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 212, no. 6 (1998): 415–26. http://dx.doi.org/10.1243/0954410981532388.

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Residual-g (gravity) and g-jitter will be unavoidable sources of undesirable convection during diffusion-dominated fluid science or materials science experiments on the International Space Station. In this paper the facility orientation is proposed as an alternative to passive or active isolation devices, which would be not efficient against any residual-g, to minimize g-disturbances during microgravity experiments. A numerical study for a typical fluid physics experiment shows that both residual-g and g-jitter may be detrimental but also beneficial to achieve purely diffusive conditions, acco

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47

Marín, E., J. Marín, and R. Hechavarría. "Hyperbolic heat diffusion in photothermal experiments with solids." Journal de Physique IV (Proceedings) 125 (June 2005): 365–68. http://dx.doi.org/10.1051/jp4:2005125085.

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48

Jansson, Mats, Trygve E. Eriksen, and Susanna Wold. "LOT—in situ diffusion experiments using radioactive tracers." Applied Clay Science 23, no. 1-4 (2003): 77–85. http://dx.doi.org/10.1016/s0169-1317(03)00089-9.

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49

Mahler, C. F., and R. Q. Velloso. "Diffusion and sorption experiments using a DKS permeameter." Engineering Geology 60, no. 1-4 (2001): 173–79. http://dx.doi.org/10.1016/s0013-7952(00)00099-5.

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50

Mathiak, G., E. Plescher, and R. Willnecker. "Liquid metal diffusion experiments in microgravity—vibrational effects." Measurement Science and Technology 16, no. 2 (2005): 336–44. http://dx.doi.org/10.1088/0957-0233/16/2/003.

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