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Journal articles on the topic 'Diffusion techniques'

Author: Grafiati

Published: 11 March 2023

Last updated: 31 July 2025

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1

Bénière, François. "Tracer diffusion techniques." J. Chem. Soc., Faraday Trans. 86, no. 8 (1990): 1151–56. http://dx.doi.org/10.1039/ft9908601151.

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2

Valliyammai, C., D. Manikandan, R. Hariprasanth, B. Tamilvanan, and C. Aravind. "Emergency Information Diffusion of COVID 19 using Machine Learning Techniques." Indian Journal Of Science And Technology 17, no. 48 (2024): 5091–98. https://doi.org/10.17485/ijst/v17i48.2067.

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Objectives : To find the real time influential user in Twitter to diffuse emergency information globally during COVID 19 using social media. Methods: Twitter API is used to extract the real time COVID related tweets with trending hashtags where 80,000 live tweets are collected to process the data. Machine learning models such as Random Forest, Logistic Regression, Decision Tree, Linear Support Vector Machine, Extreme Gradient Boosting, K-Nearest Neighbor, and Ridge are trained to classify the COVID-related data. K-means clustering groups the communities with respect to zone-wise where the top

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3

Patel, Mahesh R., Bettina Siewert, Steven Warach, and Robert R. Edelman. "DIFFUSION AND PERFUSION IMAGING TECHNIQUES." Magnetic Resonance Imaging Clinics of North America 3, no. 3 (1995): 425–38. http://dx.doi.org/10.1016/s1064-9689(21)00254-3.

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4

Mazzia, Annamaria, Giorgio Pini, and Flavio Sartoretto. "Meshless techniques for anisotropic diffusion." Applied Mathematics and Computation 236 (June 2014): 54–66. http://dx.doi.org/10.1016/j.amc.2014.03.032.

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5

Dung, Nguyen Tien, and Trinh Nhu Quynh. "Tail distribution of the integrated Jacobi diffusion process." Statistics, Optimization & Information Computing 8, no. 3 (2020): 790–800. http://dx.doi.org/10.19139/soic-2310-5070-760.

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In this paper, we study the distribution of the integrated Jacobi diffusion processes with Brownian noise and fractional Brownian noise. Based on techniques of Malliavin calculus, we develop a unified method to obtain explicit estimates for the tail distribution of these integrated diffusions.

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6

Thomas, Raymond. "Facteur de production et de diffusion des techniques. Sport, technique et média." STAPS 6, no. 12 (1985): 11–15. http://dx.doi.org/10.3406/staps.1985.1441.

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7

Smilek, Jiří, Michal Kalina, Marcela Laštůvková, Irena Türkeová, Petr Sedlacek, and Martina Klučáková. "Reactivity-Mapping Tool Based on Diffusion Techniques for Characterization of Biocolloids." Materials Science Forum 851 (April 2016): 130–34. http://dx.doi.org/10.4028/www.scientific.net/msf.851.130.

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The universal reactivity-mapping tool was developed for characterization and study on barrier properties of selected biopolymers. The reactivity of biocolloids (humic acids) was studied by both diffusion techniques (break-through diffusion technique and non-stationary diffusion). The rate of reactivity of humic acids was compared by the interactions with basic cationic organic dye (Methylene Blue) because of the positive interactions among anionic supramolecular humic acids and cationic organic dyes were expected. The reactivity and barrier properties of biocolloids were compared by determinat

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8

Avasthi, D. K., and A. Tripathi. "Ion Beam Techniques for Study of Diffusion." Materials Science Forum 223-224 (July 1996): 433–36. http://dx.doi.org/10.4028/www.scientific.net/msf.223-224.433.

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9

Cohen, Jack S. "Biomedical Applications of Diffusion-Weighted NMR Techniques." Israel Journal of Chemistry 43, no. 1-2 (2003): 81–90. http://dx.doi.org/10.1560/f773-r2cr-xehh-4931.

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10

Fernandez-Cornejo, Jorge, and Alan Kackmeister. "The Diffusion of Integrated Pest Management Techniques." Journal of Sustainable Agriculture 7, no. 4 (1996): 71–102. http://dx.doi.org/10.1300/j064v07n04_08.

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11

Llatser, Ignacio, Albert Cabellos-Aparicio, Massimiliano Pierobon, and Eduard Alarcon. "Detection Techniques for Diffusion-based Molecular Communication." IEEE Journal on Selected Areas in Communications 31, no. 12 (2013): 726–34. http://dx.doi.org/10.1109/jsac.2013.sup2.1213005.

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12

HUANG, CHONGFU. "INFORMATION DIFFUSION TECHNIQUES AND SMALL-SAMPLE PROBLEM." International Journal of Information Technology & Decision Making 01, no. 02 (2002): 229–49. http://dx.doi.org/10.1142/s0219622002000142.

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Strong interests in the small-sample problem have been given towards for establishing several information diffusion techniques for pattern recognition. In this paper, we review and formalize three techniques: the soft histogram, the self-study discrete regression, and the interior-outer-set model. To promote the development of this area, in this paper we suggest two open topics: the anti-accuracy principle and the digital image compression technique based on the fuzzy if-then rules extracted by using information matrix technique.

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13

Vasilyeva, Maria, Sergei Stepanov, Alexey Sadovski, and Stephen Henry. "Uncoupling Techniques for Multispecies Diffusion–Reaction Model." Computation 11, no. 8 (2023): 153. http://dx.doi.org/10.3390/computation11080153.

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We consider the multispecies model described by a coupled system of diffusion–reaction equations, where the coupling and nonlinearity are given in the reaction part. We construct a semi-discrete form using a finite volume approximation by space. The fully implicit scheme is used for approximation by time, which leads to solving the coupled nonlinear system of equations at each time step. This paper presents two uncoupling techniques based on the explicit–implicit scheme and the operator-splitting method. In the explicit–implicit scheme, we take the concentration of one species in coupling term

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14

Ambrosini, D., D. Paoletti, and Nasser Rashidnia. "Overview of diffusion measurements by optical techniques." Optics and Lasers in Engineering 46, no. 12 (2008): 852–64. http://dx.doi.org/10.1016/j.optlaseng.2008.06.008.

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15

Liu, Cui Yin, Chun Yu Zhang, Hong Zhao Yuan, and Xi Long Qu. "The Comparison of Isotropic and Anisotropic Diffusion Techniques for Image Denoising." Applied Mechanics and Materials 34-35 (October 2010): 557–61. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.557.

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The non-linear diffusion techniques were proposed for overcome the linear diffusion defaults. The linear diffusion was a homogeneous diffusivity with a constant conductivity. In this diffusion process, the noise and the edges were smoothed in the image. In order to prevent the edge from being smoothed during the denoising, the nonlinear diffusion was proposed by Pereona and Malik. In this method, noise was smoothed Simultaneously with the edges blurred. In diffusion processes, the conductivity is dependent on the image local information. We analyzed the ineffectiveness of isotropic and extende

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16

Hagmann, Patric, Lisa Jonasson, Philippe Maeder, Jean-Philippe Thiran, Van J. Wedeen, and Reto Meuli. "Understanding Diffusion MR Imaging Techniques: From Scalar Diffusion-weighted Imaging to Diffusion Tensor Imaging and Beyond." RadioGraphics 26, suppl_1 (2006): S205—S223. http://dx.doi.org/10.1148/rg.26si065510.

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17

Gärtner, Daniel, Lisa Belkacemi, Vladimir A. Esin, et al. "Techniques of Tracer Diffusion Measurements in Metals, Alloys and Compounds." Diffusion Foundations 29 (April 2021): 31–73. http://dx.doi.org/10.4028/www.scientific.net/df.29.31.

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Tracer diffusion is one of most reliable techniques for providing basic kinetic data in solids. In the present review, selected direct methods, in particular the radiotracer measurements as a superior technique due to its high sensitivity, Secondary-Ion-Mass-Spectroscopy (SIMS) profiling, X-Ray Diffraction measurements and Rutherford Backscattering Spectrometry are presented and discussed. Special attention is put on the radiotracer technique describing the currently used sectioning techniques in detail with a focus on the experimental applications and complications. The relevant experimental

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18

Zheng, Li, Liangbin Xie, Jiantao Zhou, Xintao Wang, Haiwei Wu, and Jinyu Tian. "Anti-Diffusion: Preventing Abuse of Modifications of Diffusion-Based Models." Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 10 (2025): 10582–90. https://doi.org/10.1609/aaai.v39i10.33149.

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Although diffusion-based techniques have shown remarkable success in image generation and editing tasks, their abuse can lead to severe negative social impacts. Recently, some works have been proposed to provide defense against the abuse of diffusion-based methods. However, their protection may be limited in specific scenarios by manually defined prompts or the stable diffusion (SD) version. Furthermore, these methods solely focus on tuning methods, overlooking editing methods that could also pose a significant threat. In this work, we propose Anti-Diffusion, a privacy protection system design

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19

Lengauer, Walter, and Marcel Bohn. "Thermochemical Basis of the Preparation of Well-Defined Transition Metal Carbide, Nitride and Carbonitride Reference Materials for Electron-Probe Microanalysis (EPMA)." Solid State Phenomena 274 (May 2018): 20–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.274.20.

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A common and straightforward method for the standardisation in electron-probe microanalysis (EPMA) is the use of homogeneous reference materials prepared by various techniques such as by melting, sintering, high-temperature annealing and hot-pressing. The reference materials have to be analysed by independent methods accurately in order to define their “true” composition. For some compounds the preparation techniques are difficult because of their specific thermo-chemical properties (e.g. low diffusivities, high equilibrium nitrogen pressure, incongruent melting). In addition, many compounds s

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20

Li, Huacheng, Chunhe Xia, Tianbo Wang, Sheng Wen, Chao Chen, and Yang Xiang. "Capturing Dynamics of Information Diffusion in SNS: A Survey of Methodology and Techniques." ACM Computing Surveys 55, no. 1 (2023): 1–51. http://dx.doi.org/10.1145/3485273.

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Studying information diffusion in SNS (Social Networks Service) has remarkable significance in both academia and industry. Theoretically, it boosts the development of other subjects such as statistics, sociology, and data mining. Practically, diffusion modeling provides fundamental support for many downstream applications (e.g., public opinion monitoring, rumor source identification, and viral marketing). Tremendous efforts have been devoted to this area to understand and quantify information diffusion dynamics. This survey investigates and summarizes the emerging distinguished works in diffus

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21

Sari, Murat, and Huseyin Tunc. "Finite element based hybrid techniques for advection-diffusion-reaction processes." An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 8, no. 2 (2018): 127–36. http://dx.doi.org/10.11121/ijocta.01.2018.00452.

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In this paper, numerical solutions of the advection-diffusion-reaction (ADR) equation are investigated using the Galerkin, collocation and Taylor-Galerkin cubic B-spline finite element method in strong form of spatial elements using an ?-family optimization approach for time variation. The main objective of this article is to capture effective results of the finite element techniques with B-spline basis functions under the consideration of the ADR processes. All produced results are compared with the exact solution and the literature for various versions of problems including pure advection, p

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22

Chayen, Naomi E. "Comparative Studies of Protein Crystallization by Vapour-Diffusion and Microbatch Techniques." Acta Crystallographica Section D Biological Crystallography 54, no. 1 (1998): 8–15. http://dx.doi.org/10.1107/s0907444997005374.

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Numerous reports have been published in the literature which describe the crystallization of macromolecules by a variety of crystallization methods, including the vapour-diffusion and microbatch techniques. This topical review compares the results of examples of proteins which were crystallized by both vapour-diffusion and microbatch methods. The inherent features of the vapour-diffusion and microbatch methods are discussed and some specific conditions where one method appears more favourable than the other are reported. Guidelines for the conversion of crystallization conditions from vapour d

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23

Masutani, Yoshitaka, Shigeki Aoki, Osamu Abe, Naoto Hayashi, and Kuni Otomo. "MR diffusion tensor imaging: recent advance and new techniques for diffusion tensor visualization." European Journal of Radiology 46, no. 1 (2003): 53–66. http://dx.doi.org/10.1016/s0720-048x(02)00328-5.

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24

Wu, Tao, Zhifen Wang, Yanhua Tong, Yongya Wang, and Luc R. Van Loon. "Investigation of Re(VII) diffusion in bentonite by through-diffusion and modeling techniques." Applied Clay Science 166 (December 2018): 223–29. http://dx.doi.org/10.1016/j.clay.2018.08.023.

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25

K. Aruna Bhaskar. "Prosody Predictor based Diffusion Models Techniques for Enhanced Speech Synthesis." Journal of Information Systems Engineering and Management 10, no. 37s (2025): 141–52. https://doi.org/10.52783/jisem.v10i37s.6386.

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A prosody predictor based on a diffusion model is crucial to the new zero shot approach of voice synthesis. Since diffusion models excel at capturing complicated distributions, they are perfect for simulating the complex patterns of prosody in speech. These models have recently attracted interest in a number of generative tasks. By repeatedly changing an initial chaotic input into an output that nearly matches the intended goal, a diffusion model acts by gradually refining the input. The diffusion model iteratively refines an initial rough estimate of the prosody pattern in the context of pros

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26

Jurinak, J. J., S. S. Sandhu, and L. M. Dudley. "Ionic Diffusion Coefficients as Predicted by Conductometric Techniques." Soil Science Society of America Journal 51, no. 3 (1987): 625–30. http://dx.doi.org/10.2136/sssaj1987.03615995005100030013x.

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27

Andreianov, Boris, and Noureddine Igbida. "On uniqueness techniques for degenerate convection-diffusion problems." International Journal of Dynamical Systems and Differential Equations 4, no. 1/2 (2012): 3. http://dx.doi.org/10.1504/ijdsde.2012.045992.

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28

Maginot, P. G., and T. A. Brunner. "Lumping Techniques for Mixed Finite Element Diffusion Discretizations." Journal of Computational and Theoretical Transport 47, no. 4-6 (2018): 301–25. http://dx.doi.org/10.1080/23324309.2018.1461653.

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29

Rhead, G. E. "Particle array techniques: Application to surface diffusion measurements." Surface Science 192, no. 2-3 (1987): 597–603. http://dx.doi.org/10.1016/s0039-6028(87)81150-0.

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30

Ramos, J. I. "Linearized factorization techniques for multidimensional reaction—diffusion equations." Applied Mathematics and Computation 100, no. 2-3 (1999): 201–22. http://dx.doi.org/10.1016/s0096-3003(98)00023-x.

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31

Raya, J. G., O. Dietrich, M. F. Reiser, and A. Baur-Melnyk. "Techniques for diffusion-weighted imaging of bone marrow." European Journal of Radiology 55, no. 1 (2005): 64–73. http://dx.doi.org/10.1016/j.ejrad.2005.01.014.

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32

Rhead, G. E. "Particle array techniques: Application to surface diffusion measurements." Surface Science Letters 192, no. 2-3 (1987): A576. http://dx.doi.org/10.1016/0167-2584(87)90823-1.

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33

Wesbey, George, and David Haynor. "Using NMR diffusion techniques to measure tissue perfusion." Magnetic Resonance Imaging 3, no. 3 (1985): 302–3. http://dx.doi.org/10.1016/0730-725x(85)90364-9.

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34

Korolkov, Oleg, Toomas Rang, A. Syrkin, and V. Dmitriev. "Diffusion Welding Techniques for Power SiC Schottky Packaging." Materials Science Forum 527-529 (October 2006): 919–22. http://dx.doi.org/10.4028/www.scientific.net/msf.527-529.919.

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This paper is devoted to the results of a diffusion welding technique applied to solve the problem of packaging for large area SiC Schottky diodes. To supply low defect density substrates for fabrication of 0.3 cm2 Schottky diodes TDI defect-reducing technology was used. Diodes were fabricated on CVD grown low-doped 4H-SiC single epitaxial layer without edge termination. Double layer Ni-Au and triple layer Ti-Ni-Au sputter metallization were used for Schottky contacts fabrication. Non-rectifying backside contacts were provided by Ni-Au metallization. Diodes were tested on-wafer and delivered f

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35

Seeger, A. "Diffusion of Hydrogen in Metals: Techniques and Mechanisms*." Zeitschrift für Physikalische Chemie 164, Part_1 (1989): 763–64. http://dx.doi.org/10.1524/zpch.1989.164.part_1.0763.

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36

Richstone, Lee, and Louis R. Kavoussi. "Barriers to the diffusion of advanced surgical techniques." Cancer 112, no. 8 (2008): 1646–49. http://dx.doi.org/10.1002/cncr.23369.

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37

Awad, Nosiba Saeed, Hussein Ahmed Hassan, Amel Alsied Hasan, and Yaser Osman Elbadawi. "Assessing Brain Tumours through Diffusion-Weighted Imaging Techniques." Saudi Journal of Medical and Pharmaceutical Sciences 11, no. 04 (2025): 299–306. https://doi.org/10.36348/sjmps.2025.v11i04.010.

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Introduction: Cancer is the second leading cause of death globally, and early detection is crucial for improving outcomes. Brain tumors, characterized by abnormal cell growth in the brain, can be either benign or malignant. Although conventional MRI techniques are routinely used for diagnosis, they often lack the sensitivity needed for tumor grading and characterization. This study aims to evaluate the effectiveness of Diffusion-Weighted Imaging (DWI) and the Apparent Diffusion Coefficient (ADC) in providing additional diagnostic information for brain tumors. Methods: A retrospective analysis

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38

Fortuna, Luigi, and Giovanni Garraffa. "Characteristic Value Techniques to Approximate Warburg Diffusion Devices." Energies 18, no. 13 (2025): 3408. https://doi.org/10.3390/en18133408.

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In this contribution, a model order reduction (MOR) strategy for systems characterized by Warburg-type impedance behavior, frequently encountered in electrochemical applications, is addressed. In particular, the interest is focused on the time-domain approach for deriving low-order models of such a system, in contrast to the current approaches based on the frequency domain. By exploiting the peculiar structure of positive real (PR) systems, a characteristic value technique relying on the Riccati Equation Balancing strategy is introduced to approximate such models with reduced complexity. The c

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39

Armstrong, Clare L., Laura Toppozini, Hannah Dies, Antonio Faraone, Michihiro Nagao, and Maikel C. Rheinstädter. "Incoherent Neutron Spin-Echo Spectroscopy as an Option to Study Long-Range Lipid Diffusion." ISRN Biophysics 2013 (March 31, 2013): 1–9. http://dx.doi.org/10.1155/2013/439758.

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Diffusion is the fundamental mechanism for lipids and other molecules to move in a membrane. It is an important process to consider in modelling the formation of membrane structures, such as rafts. Lipid diffusion is mainly studied by two different techniques: incoherent neutron scattering and fluorescence microscopy. Both techniques access distinctly different length scales. While neutron scattering measures diffusion over about 3 lipid diameters, microscopic techniques access motions of lipids over micrometer distances. The diffusion constants which are determined by these two methods often

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40

Roceanu, Adina, Mihaela Onu, Liviu Badea, and Ovidiu Bajenaru. "Imaging brain networks - short presentation of new techniques." Romanian Journal of Neurology 12, no. 4 (2013): 180–82. http://dx.doi.org/10.37897/rjn.2013.4.3.

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The brain is organized into large-scale functional networks with interactions between them. For the purpose of imaging brain networks, two fMRI techniques are particularly helpful. Diffusion tensor imaging (DTI) is based on the detection of water diffusion, which occurs preferentially in the longitudinal direction of axons, providing a mean to imagine the anatomy of axonal bundles. Functional connectivity is based on the relative synchrony of the blood-oxygen-level-dependent (BOLD) signal across brain regions that work together.

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41

Vykhodets, V. B., and T. E. Kurennykh. "In-situ nuclear reaction analysis." Diagnostics, Resource and Mechanics of materials and structures, no. 4 (June 2021): 6–14. http://dx.doi.org/10.17804/2410-9908.2021.4.006-014.

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The principles of in-situ nuclear reaction techniques and the need for them in various fields of scientific research are considered; several examples of the application of these techniques are given. It is shown that the techniques of in-situ nuclear reactions are effective in studying the diffusion of deuterium in metals at temperatures below room temperature, the diffusion of deuterium in proton-conducting oxides, the quantum diffusion of deuterium in metals at cryogenic temperatures, and the chemical composition of oxide nanopowders when they are heated in vacuum. Promising applications of

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42

Sharma, Mala M., Amanda M. Stutzman, Jeremy M. Schreiber, Douglas E. Wolfe, and Timothy J. Eden. "Nickel Coatings on Ceramic Materials Using Different Diffusion Techniques." Coatings 13, no. 12 (2023): 2072. http://dx.doi.org/10.3390/coatings13122072.

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Diffusion bonding is a process that has proven effective for the joining of metal to ceramic, but the differences in coefficient of thermal expansion still pose challenges during and after the bonding process. This work details the exploration of traditional diffusion-bonding processes using two traditional approaches, which include bonding of a 99.9+% pure Ni foil to SiC, Si3N4, and YSZ disks using (1) a hot isostatic press (HIP), with and without added weight to promote interfacial contact, and (2) field-assisted sintering (FAST). Samples were consolidated by heating to 1200 °C and held for

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43

Oliver, B. A., and A. E. Dixon. "Laser beam induced current measurements of minority carrier diffusion length." Canadian Journal of Physics 65, no. 8 (1987): 814–20. http://dx.doi.org/10.1139/p87-124.

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Laser beam induced current (LBIC) measurement has been proposed as a technique for determining various semiconductor parameters, including minority carrier diffusion length. In this work, techniques for extracting values of bulk diffusion length from experimental LBIC curves are presented for both parallel and perpendicular barrier–beam geometries and for both thick and thin samples. Experimental tests of each technique compare diffusion length results obtained for samples of different geometries with each other, with confirmation of results by measuring the minority carrier lifetime by photoc

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44

Popli, Manju Bala, Pranav Gupta, Devraj Arse, Pawan Kumar, and Prabhjot Kaur. "Advanced MRI Techniques in the Evaluation of Complex Cystic Breast Lesions." Breast Cancer: Basic and Clinical Research 10 (January 2016): BCBCR.S38535. http://dx.doi.org/10.4137/bcbcr.s38535.

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Objective The purpose of this research work was to evaluate complex cystic breast lesions by advanced MRI techniques and correlating imaging with histologic findings. Methods and Materials In a cross-sectional design from September 2013 to August 2015, 50 patients having sonographically detected complex cystic lesions of the breast were included in the study. Morphological characteristics were assessed. Dynamic contrast-enhanced MRI along with diffusion-weighted imaging and MR spectroscopy were used to further classify lesions into benign and malignant categories. All the findings were correla

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45

Alexis, Ndabarushimana, Toh Alain, and Kouadio Amani Augustin. "Innovations Techniques Caféicoles Au Burundi : Étude Des Contraintes Socio-Économiques Et Des Conditions D’adoption Et De Diffusion Des Innovations Techniques Dans La Province Kayanza." European Scientific Journal, ESJ 12, no. 17 (2016): 383. http://dx.doi.org/10.19044/esj.2016.v12n17p383.

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This contribution highlights the socio-economic constraints to the adoption and diffusion of technological innovations in coffee farms in Burundi. These constraints are basically related to the sociological environment that structure behaviors of Burundian coffee growers in the process of economic production. In view these sociological contradictions, initiating a typically socio- anthropological approach, this article highlights a set of policy conditions to stimulate the adoption and diffusion of innovations in Kayanza province of Burundi.

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46

Chen, Ruige, Xiaoli Wei, Fawang Liu, and Vo V. Anh. "Multi-term time fractional diffusion equations and novel parameter estimation techniques for chloride ions sub-diffusion in reinforced concrete." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2172 (2020): 20190538. http://dx.doi.org/10.1098/rsta.2019.0538.

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In this paper, searching for a better chloride ions sub-diffusion system, a multi-term time-fractional derivative diffusion model is proposed for the description of the time-dependent chloride ions penetration in reinforced concrete structures exposed to chloride environments. We prove the stability and convergence of the model. We use the modified grid approximation method (MGAM) to estimate the fractional orders and chloride ions diffusion coefficients in the reinforced concrete for the multi-term time fractional diffusion system. And then to verify the efficiency and accuracy of the propose

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47

Dyment, Fanny, Silvia Balart, Constanza Lugo, Rodolfo A. Pérez, Nicolás Di Lalla, and Manuel J. Iribarren. "Ru Self-Diffusion and Ru Diffusion in Al." Defect and Diffusion Forum 237-240 (April 2005): 402–7. http://dx.doi.org/10.4028/www.scientific.net/ddf.237-240.402.

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The self-diffusion of Ru in the temperature range of (1267-1373) K and the Ru diffusion in pure aluminum in the temperature range of (632-873) K is reported. Difficulties were encountered when working with Ru as matrix (its brittleness at room temperature impeded a good sectioning) and they are the reason why only the order of magnitude of the self-diffusion in the small range of temperature studied is given. For Ru diffusion in aluminum, two experimental techniques were used: the conventional serial sectioning with use of a radiotracer, 103Ru, for the highest temperatures and Heavy Ions Ruthe

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48

PADMANABHAMURTY, B., and RN GUPTA. "An urban diffusion model for Delhi using computer techniques." MAUSAM 37, no. 1 (1986): 61–66. http://dx.doi.org/10.54302/mausam.v37i1.2152.

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A source oriented urban diffusion model for Delhi with area, elevated point and moving sources, based on the model developed by Hanna is utilised in obtaining spatial and temporal variations of SO2 concentrations, Average and maximum concentrations computed by the model fairly agreed with the monitored values.

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49

Jobic, H., and A. Méthivier. "Intracrystalline Diffusion in Zeolites Studied by Neutron Scattering Techniques." Oil & Gas Science and Technology 60, no. 5 (2005): 815–30. http://dx.doi.org/10.2516/ogst:2005058.

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Weissbach, Severin, Frank Wyrowski, and Olof Bryngdahl. "Error-diffusion algorithm in phase synthesis and retrieval techniques." Optics Letters 17, no. 4 (1992): 235. http://dx.doi.org/10.1364/ol.17.000235.

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