The University of Western Australia

UWA Staff Profile

Ipsum Lorem

Professor Michael Johns

Associate Dean (Teaching and Learning)
Engineering and Mathematical Sciences, Faculty of

Contact details
Address
Faculty of Engineering and Mathematical Sciences
The University of Western Australia (M017)
35 Stirling Highway
CRAWLEY WA 6009
Australia
Phone
+61 8 6488 5664
Email
michael.johns@uwa.edu.au

Professor
Mechanical and Chemical Engineering, School of

Contact details
Address
School of Mechanical and Chemical Engineering
The University of Western Australia (M017)
35 Stirling Highway
CRAWLEY WA 6009
Australia
Phone
+61 8 6488 5664
Email
michael.johns@uwa.edu.au
Qualifications
DENG Cantab.
Publications
Peer-reviewed Publications

Magnetic Resonance – Biofilms and Reverse Osmosis Membranes
(1.) Creber, S.A., Pintelon, T.R.R., Graf von der Schulenberg, D.A.W., Vrouwenvelder, J.S., van Loosdrecht, M.C.M and Johns, M.L. (2010), Magnetic resonance imaging and 3D simulations studies of biofilm accumulation and cleaning on reverse osmosis membranes, Food and Bioproducts Processing, 88, 401-408.
(2.)Creber, S.A., Vrouwenvelder, J.S., van Loosdrecht, M.C.M and Johns, M.L. (2010), Chemical cleaning of biofouling in reverse osmosis membranes evaluated using magnetic resonance imaging, J. Memb. Sci. 362(1-2), 202-210.
(3.) Beauregard, D.A., Yong, P., Macaskie, L.E. and Johns, M.L. (2010), Using Non-Invasive Magnetic Resonance Imaging (MRI) to assess the Reduction of Cr(VI) Using a Biofilm-Palladium Catalyst, in press, Biotech. and Bioeng. 107, 1, 11-20
(4.) Vrouwenvelder, J.S., Graf von der Schulenberg, D.A., Kruithof, J.C., Johns, M.L. and van Loosdrecht, M.C.M. (2009), Biofouling of spiral-wound nanofiltration and reverse osmosis membranes: A feed spacer problem, Water Research, 43(3), 583-594.
(5.) Graf von der Schulenburg, D.A., Vrouwenvelder, J.S., Creber, S.A., van Loosdrecht, M.C.M and Johns, M.L. (2008), Nuclear Magnetic Resonance Microscopy Studies of Membrane Biofouling, J. Memb. Sci., 323(1), 37-44.
(6.) Graf von der Schulenburg, D.A., Akpa, B.S., Gladden, L.F. and Johns, M.L. (2008), Non-invasive mass transfer measurements in complex biofilm-coated structures, Biotech. and Bioeng., 101(3) 602-608.
(7.) Graf von der Schulenburg, D.A., Holland, D.J., Paterson-Beedle, M., Macaskie, L.E., Gladden, L.F. and Johns, M.L. (2008), Spatially Resolved Quantification of Metal Ion Concentration in a Biofilm-mediated Ion Exchanger, Biotech. and Bioeng., 99(4), 821-829 – cover feature

Magnetic Resonance – Rock/Porous Media Characterisation
(8.) Hussain, R., Pintelon, T.R.R., Mitchell, J. and Johns, M.L. (2011), Using NMR Displacement Measurements to Probe CO2 entrapment in Porous Media, in press, AICHE J DOI: 10.1002/aic.12401
(9.) Mitchell, J., Chandrasekera, T.C, Johns, M.L. and Gladden, L.F. (2010), Nuclear magnetic resonance relaxation and diffusion in the presence of internal gradients, Phys. Rev. E, 81(2), 026101.
(10.) Mitchell, J., Fordham, E.J., von der Schulenberg, D.A.G., Holland D.J., Sederman, A.J., Johns, M.L. and Gladden, L.F. (2008), Improving accuracy and speed of NMR flow propagator measurements in Permeable Rock, Magnetic Resonance in Porous Media, AIP Conference Proceedings, 1081, 71-74.
(11.) Scheven, U.M., Harris, R. and Johns M.L. (2008), Quasi-asymptotic dispersion, Magnetic Resonance in Porous Media, AIP Conference Proceedings, 1081, 18-21.
(12.) Scheven, U.M., Harris, R.J. and Johns, M.L. (2007), The intrinsic dispersivity of randomly packed identical spheres, PRL, 99, 054502.
(13.) Scheven, U.M., Crawshaw, J.P., Anderson, V.J., Harris, R.J., Johns, M.L. and Gladden, L.F. (2007), A cumulant analysis for non-Gaussian displacement distributions in Newtonian and non-Newtonian flows through porous media, Magn. Reson. Imag. 25, 513-516.
(14.) Scheven, U.M., Verganelakis, D., Harris R.J., Johns, M.L. and Gladden, L.F. (2005), Quantitative NMR measurements of pre-asymptotic dispersion in flow through porous media, Physics of Fluids, 17, 117107.
(15.) Verganelakis, D.A., Crawshaw, J., Johns, M.L., Mantle, M.D., Scheven, U., Sederman A.J. and Gladden, L.F., (2005) Displacement propagators of brine flowing within different types of sedimentary rock, Magn. Reson. Imag., 23, 349–351.
(16.) Harris, R.J., Sederman, A.J., Mantle, M.D., Crawshaw, J. and Johns, M.L., (2005) A comparison of experimental and simulated propagators in porous media using confocal laser scanning microscopy, lattice Boltzmann hydrodynamic simulations and nuclear magnetic resonance, Magn. Reson. Imag., 23, 355 –357.
(17.) Sheppard, S., Mantle, M., Sederman, A.J., Johns, M.L. and Gladden, L.F. (2003), MRI Study of complex fluid flow in porous media, flow patterns and quantitative saturation profiling of amphiphilic fracturing fluid displacement in sandstone cores, Magn. Reson. Imag., 21, 365 –367.
(18.) Johns, M.L., Sederman, A.J., Davis, S., Wilson, A. and Gladden, L.F., (2003), Using MR techniques to probe permeability reduction in rock cores, A.I.Ch.E. J., 49 1076-1084.
(19.) Johns, M.L., Sederman, A.J., Bramley, A.S., Alexander, P. and Gladden, L.F. (2000), Local transitions in flow phenomena through packed beds identified by MRI, A.I.Ch.E .J., 46, 2151-2161.
(20.) Sederman, A.J., Johns, M.L., Alexander, P. and Gladden, L.F. (1998), Structure-flow correlations in packed beds, Chem. Engng Sci., 53, 2117 - 2128.
(21.) Sederman, A.J., Johns, M.L., Alexander, P. and Gladden, L.F. (1998), Visualisation of structure and flow in packed beds. Magn. Reson. Imag., 16, 497 – 500.
(22.) Sederman, A.J., Johns, M.L., Bramley, A.S., Alexander, P. and Gladden, L.F. (1997), Magnetic resonance imaging of liquid flow and pore structure within packed beds. Chem. Engng Sci., 52, 2239 - 2250.
(23.) Sederman, A. J., Johns, M. L., Bramley, A., Alexander, P. and Gladden, L. F. (1997) Visualisation of structure-flow correlations in packed beds using MRI., Proceedings of the 1997 IChemE Jubilee research event, 8-9 April 1997, Nottingham, 1, 245-248.

Magnetic Resonance – Multi-phase flow in Porous Media
(24.) Johns, M.L. and Gladden, L.F., (2001) Measuring the surface-to-volume ratio of ganglia trapped in small pore systems using NMR pulsed field gradient techniques, J. Colloid Interface Sci., 238, 96-104.
(25.) Johns, M.L. and Gladden, L.F. (1998), Magnetic resonance imaging study of non-aqueous phase removal from porous media. Magn. Reson. Imag., 16, 655 -657.
(26.) Johns, M.L. and Gladden, L.F. (1999), Magnetic resonance imaging study of the dissolution kinetics of octanol in porous media. J. Colloid Interface Sci., 210, 261 - 270.
(27.) Johns, M.L. and Gladden, L.F. (2000), Probing ganglia dissolution and mobilisation in a water-saturated porous medium using MRI, J. Colloid Interface Sci., 225, 119-127.

Magnetic Resonance – Emulsions
(28.) Creber, S.A., Pintelon, T.R.R. and Johns, M.L. (2009), Quantification of the Velocity Acceleration Factor for Colloidal Transport in Porous Media using NMR, J. Colloid Interface Sci, 339, 168-174.
(29.) Johns M.L. (2009), NMR Studies of Emulsions, Curr. Opinion Coll. Int. Sci, 14(3), 178-183.
(30.) Johns, M.L. and Hollingsworth, K.G. (2007), Characterisation of emulsion systems using NMR and MRI, Progress in NMR Spectroscopy, 50(2-3), 51-70.
(31.) Hollingsworth, K.G. and Johns, M.L. (2006), Droplet migration in emulsion systems measured using MR methods, J. Colloid Interface Sci., 296, 700-709.
(32.) Hollingsworth, K.G. and Johns, M.L., (2005) Spatially resolved emulsion droplet sizing using inverse Abel Transforms, J. Magn. Reson., 176, 71-78.
(33.) Hollingsworth, K.G., Buckley, C, Gladden, L.F. and Johns, M.L. (2004) Fast sizing of emulsion droplets using Difftrain sequences, J. Colloid Interface Sci., 274 (1), 244-250.
(34.) Hollingsworth, K.G. and Johns, M.L, (2004) Rheo-NMR of emulsion systems, J. Rheol., 48, 787 – 803.
(35.) Hollingsworth, K.G. and Johns, M.L., (2003) Measurement of emulsion droplet sizes using PFG NMR and regularisation methods, J. Colloid Interface Sci., 258, 383 - 389.
(36.) Johns, M.L., Hollingsworth, K.G. and Gladden, L.F., (2001) Robust emulsion characterisation using MRI. NATO ASI Series.
(37.) Johns, M.L. and Gladden, L.F. (2002) Sizing emulsion droplets under flowing conditions using Magnetic Resonance methods, J. Magn. Reson., 154 (1), 142-145.

Magnetic Resonance - Technique Development
(38.) Fridjonsson, E.O., Chandrasekera, T.C, Sederman, A.J., Johns, M.L., Zhao, C-X. and Middelberg, A.P.J. (2011), Imaging the effects of Peptide Bio-Surfactants on Droplet Deformation in a Taylor-Couette Shear Cell, Soft Matter, 7(6), 2961 – 2967.
(39.) Davies, C.J., Sederman, A.J., Pipe, C.J., McKinley, G.H., Gladden, L.F. and Johns, M.L. (2010), Rapid Measurement of Transient Velocity Evolution using Gervais, J. Magn. Reson., 202, 93-101.
(40.) Parasoglou, P., Malioutov, D., Sederman, A.J., Rasburn, J., Powell, H., Gladden, L.F., Blake, A. and Johns,
M.L. (2009), Quantitative Single Point Imaging with Compressed Sensing, J. Magn. Reson., 201, 72-80.
(41.) Sankey, M.H., Yang, Z., Gladden L.F., Johns, M.L., Lister D.H. and Newling B. (2009), SPRITE MRI of bubbly flow in a horizontal pipe, J. Magn. Reson., 199, 126-135.
(42.) Mitchell, J. and Johns, M.L. (2009), Rapid measurement of diffusion using PFG: Development and application of the Difftrain pulse sequence, Concepts Mag. Res. A, 34A, 1, 1-15.
(43.) Parasoglou, P., Sederman, A.J., Rasburn, J., Powell, H. and Johns, M.L. (2008), Optimal k-space Sampling for Single Point Imaging of Transient Systems, J. Magn. Reson, 194(1), 99-107.
(44.) Chandresekera, T.C., Mitchell, J., Fordham, E.J., Gladden, L.F., Johns, M.L (2008), Rapid encoding of T1 with spatial encoding in n-dimensional relaxation correlations, J. Magn. Reson, 194(1), 156-161.
(45.) Mitchell, J., Graf von der Schulenberg, D.A., Holland, D.J., Fordham, E.J., Johns, M.L. and Gladden, L.F. (2008), Determining NMR flow propagator moments in porous rocks without the influence of relaxation, J. Magn. Reson., 193(2), 218-225.
(46.) Mitchell, J., Sederman, A.J., Fordham, E.J., Johns, M.L. and Gladden, L.F. (2008), A rapid measurement of flow propagators in porous rocks, J. Magn. Reson, 191 (2), 267-272.
(47.) Mitchell, J., Griffith, J.D., Collins, J.H.P., Sederman, A.J., Gladden, L.F. and Johns, M.L. (2007), Validation of NMR relaxation exchange time measurements in porous media, J. Chem. Phys., 127, 234701.
(48.) Davies, C.J., Griffith, J.D., Sederman, A.J., Gladden, L.F. and Johns, M.L. (2007), Rapid surface-to-volume ratio and tortuosity Measurement using Difftrain, J. Magn. Reson, 187, 170-175.
(49.) Akpa, B.S., Holland, D.J., Sederman, A.J., Johns, M.L. and Gladden, L.F. (2007), Enhanced 13C PFG NMR for the study of hydrodynamic dispersion in porous media, J. Magn. Reson., 186, 160-165
(50.) Sederman, A.J., Hollingsworth, K.G. and Johns, M.L and Gladden, L.F., (2004) Development and applications of Rotationally-compensated RARE (ROTACOR), J Magn. Reson. 171, 118-123.
(51.) Buckley, C, Sederman, A.J., Hollingsworth, K., Holland, D.J., Johns, M.L. and Gladden, L.F., (2003) Applications of fast diffusion measurement using the Difftrain sequence, J. Magn. Res. 161, 112-117.


Magnetic Resonance – Spray Freeze Drying and Detergent Characterisation
(52.)Kolz J., Yarovoy Y., Mitchell J., Johns M.L. and Gladden L.F. (2010), Interactions of Binary Liquid Mixtures with Polysaccharides Studied using Multi-dimensional NMR Relaxation Time Measurements, Polymer 51,18, 4102-4109.
(53.) Griffiths, J.D., Mitchell, J., Bayly, A.E. and Johns, M.L. (2009), In-situ monitoring of the microstructure of detergent drops during drying using a rapid nuclear magnetic resonance diffusion measurement, Jnl. Mat. Sci, 44, 17, 4587 – 4592.
(54.) Griffiths, J.D., Mitchell, J., Bayly, A.E. and Johns, M.L. (2009), Observing exchange between surfactant and aqueous domains in detergents, in press, J. Phys. Chem. B., 113(20), 7156-7161.
(55.) Pore M., Seah, H.H., Glover, J.W.H., Holmes, D.J., Johns, M.L., Wilson, D.I. and Moggridge, G.D. (2009), In-situ X-ray studies of cocoa butter droplets undergoing simulated spray freezing, JAOCS, 86(3), 215-225.
(56.) Griffith, J.D., Bayly, A.E., and Johns, M.L. (2008), Magnetic Resonance Studies of Detergent Drop Drying, Chem. Eng. Sci., 63 (13), 3449-3456.
(57.) Griffith, J.D., Bayly, A.E., and Johns, M.L. (2007) Evolving micro-structures in drying detergent pastes quantified using NMR, J. Colloid Interface Sci, 315(1), 223-229.
(58.) Gwie, C.G., Griffiths, R.J., Cooney, D.T., Johns, M.L. and Wilson, D.I. (2006), Microstructures formed by spray freezing of food fats, JAOCS, 83(12), 1053-1062.
(59.) Macleod, C.S., McKittrick, J.A., Hindmarsh, J.P., Johns, M.L. and Wilson, D.I. (2006), Fundamentals of spray freezing of instant coffee, Jnl. of Food Eng., 74(4), 451-461.
(60.) Barnes, E.C., Wilson, D.I. and Johns, M.L. (2006), Velocity profiling inside a ram extruder using Magnetic Resonance (MR) techniques, Chem. Eng. Sci., 61(5), 1357-1367.
(61.) Hindmarsh, J.P., Sederman, A.J., Gladden, L.F., Wilson, D.I. and Johns, M.L, (2005) Rapid measurement of dispersion and velocity in freezing droplets using magnetic resonance methods, Experiments in Fluids, 38(6), 750-758.
(62.) Hindmarsh, J.P., Russell, A.B., Chen, X.D., Wilson, D.I. and Johns, M.L., (2005) NMR verification of single droplet freezing models, A.I.Ch.E. J., 51(10), 2640-2648.
(63.) Hindmarsh, J.P., Wilson, D.I. and Johns, M.L., (2005) Using MRI to predict the solid fraction formed during recalescence of freezing droplets, Int. J. Heat and Mass Transfer, 48(5), 1017-1021.
(64.) Barnes, E.C., Hollingsworth, K.G., Wilson, D.I. and Johns, M.L., (2004) Magnetic resonance studies of liquid-soft solid mixing by extrusion, Chem. Eng. Res. and Design., 82(A10), 1291-1408.
(65.) Hindmarsh, J.P., Buckley, C., Russell, A.B., Chen, X.D., Wilson, D.I. and Johns, M.L., (2004) Imaging droplet freezing using NMR, Chem Engng Sci., 59(10), 2113-2122.
(66.) Hindmarsh, J.P., Hollingsworth, K.G., Wilson, D.I. and Johns, M.L., (2004) An NMR study of the freezing of emulsion-containing drops, J. Colloid Interface Sci., 275(1), 165 –171.
(67.) Hindmarsh, J.P., Wilson, D.I. and Johns, M.L. (2004), Measuring self-diffusion in super-cooled liquid droplets with pulsed field gradient spin echo (PGSE) techniques, Colloids and Surfaces A, 234, 129-134.

LB and related Simulation Techniques
(68.)Graf von der Schulenberg, D.A. and Johns, M.L (2011), Catalyst Effectiveness Factor Distributions in Isothermal Packed Bed Reactors, Chem Eng. Sci., in press, doi:10.1016/j.ces.2011.04.001
(69.) Pintelon, T.R.R., Creber, S.A., Graf von der Schulenberg, D.A. and Johns, M.L (2010), Validation of 3D simulations of reverse osmosis membrane biofouling, Biotech. and Bioeng., 106(4), 677- 689.
(70.) Pintelon, T.R.R, Graf von der Schulenburg, D.A. and Johns, M.L. (2009), Towards Optimum Permeability Reduction in Porous Media using Biofilm Growth Simulations, Biotech. and Bioeng., 103(4), 767-779.
(71.) Graf von der Schulenburg, D.A., Pintelon, T.R.R., Picioreanu, C., van Loosdrecht, M.C.M and Johns, M.L. (2009), Three-Dimensional Simulations of Biofilm Growth in Porous Media, AIChE J, 55(2), 494-504
(72.) Du, G., Matthews, S.M., Johns, M.L., Fisher, A.C. (2007), Computational electrochemistry: Lattice Boltzmann simulations of voltammetry at microelectrodes, Electro. Comm., 9 (10), 2519-2524.
(73.) Graf von der Schulenburg, D.A., Paterson-Beedle, M., Macaskie, L.E., Gladden, L.F. and Johns, M.L. (2007), Flow through an evolving porous media – compressed foam, Jnl. Mat. Sci., 42 (16), 6541-6548.
(74.) Fietkau, N., Du, G., Matthews, S.M., Johns, M.L., Fisher, A.C. and Compton, R.G. (2007), Chronoamperometric sizing and locating of spherical particles via potential-step transients, J. Phys. Chem. C, 111, 7801-7807.
(75.) Sullivan, S.P, Akpa, B.S., Fisher, A.F., Matthews, S.M., Gladden, L.F. and Johns, M.L. (2007), Simulation of miscible diffusive mixing in microchannels, Sensors and Accentuators B: Chemical, 123, 1142-1152.
(76.) Graf von der Schulenburg, D.A., Gladden L.F. and Johns, M.L. (2007), Modelling biofilm-modified hydrodynamics in 3D, Water Science Tech., 55(8-9), 275-281.
(77.) Sullivan, S.P., Sederman, A.J., Johns, M.L. and Gladden, L.F. (2007), Verification of shear thinning LB simulations in complex geometries, Jnl. Non-Newtonian Fluid Mech., 143, 59-63.
(78.) Sullivan, S.P., Gladden, L.F. and Johns, M.L. (2006) 3D chemical reaction LB simulations, Mathematics and Computers in Simulation, 72, 206-211.
(79.) Sullivan, S.P., Gladden, L.F. and Johns, M.L. (2006), 3D modelling of shear thinning flow using LB, Jnl. Non-Newtonian Fluid Mech., 133, 91-98.
(80.) Sullivan, S.P., Johns, M.L., Matthews, S.S. and Fisher, A.C. (2005), Lattice Boltzmann simulations of electrolysis reactions: Microfluidic voltammetry, Electro. Comm., 7 (12), 1323 – 1328.
(81.) Sullivan, S.P., Sani, F.M., Johns, M.L. and Gladden, L.F., (2005) Simulation of packed bed reactions using Lattice Boltzmann Methods: Model development and effect of intra-particle diffusion, Chem Eng Sci., 60, 3405 -3418.
(82.) Johns, M.L. and Gladden, L.F., (2002) Cellular automata model of ganglia dissolution, Physics of Fluids, 14(12), 4152-4159.

THz
(83.)Parasoglou, .P, Parrott, E.P.J., Zeitler, J.A., Rasburn, J., Powell, H., Gladden, L.F. and Johns, M.L. (2010), Quantitative water content measurements in food wafers using terahertz, Terahertz Science and Technology, 3(4), 1-11.
(84.)Parasoglou, .P, Parrott, E.P.J., Zeitler, J.A., Rasburn, J., Powell, H., Gladden, L.F. and Johns, M.L. (2009), Quantitative Moisture Content Detection in Food Wafers, 34th Int. Conf. on IR, MM and THz waves, 1-2, 320-321.
(85.)Cunnell R, Luce T, Collins JHP, Rungsawang, R., Freeman, J.R., Beere, H.E., Ritchie, D.A., Gladden, L.F., Johns, M.L. and Zeitler, Z.A. (2009), Quantification of Emulsified Water Content in Oil Using a Terahertz Quantum Cascade Laser, , 34th Int. Conf. on IR, MM and THz waves, 1-2, 557-558.
(86.) Obradovic, J., Collins, J.H.P., Hirsch, O., Mantle, M.D., Johns, M.L. and Gladden, L.F. (2007), The use of THz time-domain reflection measurements to investigate solvent diffusion in polymers, Polymer, 48, 3494-3503.
(87.) Nguyen, K.L. Johns, M.L., Gladden, L.F., Worrall, C.H., Alexander, P., Beere H.E., Pepper, M., Ritchie, D.A., Alton, J., Barbieri, S. and Linfield, E.H. (2006) Three dimensional imaging with a terahertz quantum cascade laser, Optics Express, 14(6), 2123-2129.

Other Topics
(88.) Somasundrum, I.M., Cendrowicz, A., Johns, M.L. and Wilson, D.I. (2010), 2-D simulation of wick debinding for ceramic parts in close proximity, in press, Chem. Eng. Sci 65, 5990-6000.
(89.) Stevenson, R., Harrison, S.T.L., Mantle, M.D., Sederman, A.J., Moraczewski, T.L and Johns, M.L. (2010), Analysis of Partial Suspension in Stirred Mixing Cells using both MRI and ERT, Chem. Eng. Sci., 65 (4), 1385-1391.
(90.) Taylor, J.E., Van Damme, I., Johns, M.L., Routh, A.F. and Wilson, D.I. (2009), Shear rheology of molten crumb chocolate, J. Food Sci., 74(2), E55-E61.
(91.) Gladden, L.F., Chandrasekera, T.C., Fordham, E.J., Johns, M.L., Mantle, M.D., Mitchell, J., Sankey, M.H., Sederman, A.J. and Weber, D. (2008), Probing multi-component systems in porous media over a hierarchy of length-scales, Magnetic Resonance in Porous Media, AIP Conference Proceedings, 1081, 7-10.
(92.) Somasundrum, I.M., Cendrowicz, A., Wilson, D.I. and Johns, M.L. (2008), Phenomenological study and modelling of wick debinding, Chem. Eng. Sci., 63(14), 3802-3809.
(93.) van Herwijnen, R., Hutchings, T.R., Al-Tabbaa, A., Moffat, A.J., Johns, M.L. and Ouki, S.K. (2007), Remediation of metal contaminated soil with mineral-amended composts, Env. Poll., 150(3), 347-354.
(94.) van Herwijnen, R., Al-Tabbaa, A., Hutchings, T.R., Moffat, A.J., Ouki, S.K. and Johns, M.L. (2007) The impact of waste compost-based soil amendments on the leaching behaviour of a heavy metal contaminated soil, Env. Eng. Sci., 24(7), 897 – 904.
(95.) Akpa, B.S., Matthews, S.M., Sederman, A.J., Yunus, K., Fisher, A.C., Johns, M.L. and Gladden, L.F. (2007), Study of miscible and immiscible flows in a microchannel using magnetic resonance imaging, Anal. Chem., 79, 6128-6234.
(96.) Lee, W.P., Gundabala, V.R., Akpa, B.S., Johns, M.L., Jeynes C. and Routh, A.F. (2006) Distribution of surfactants in latex films: A Rutherford Backscattering study, Langmuir, 22, 5314-5320.
(97.)Johns, M.L. and Gladden, L.F, (2003) MRI studies of dissolving particulate solids, Magn. Reson. Imag., 21, 395 –396.
(98.) Harding, S.G., Johns, M.L., Pugh, S.R., Fryer, P.J. and Gladden, L.F. (1997), Magnetic resonance imaging studies of diffusion in polymers. Food Addit. and Contam., 14, 583 – 589.
(99.) Harbottle, M.J., Mantle, M.D., Johns, M.L., van Herwijnen, R., Al-Tabbaa, A., Hutchings, T.R., Moffat, A.J., and Ouki, S.K. (2007), Magnetic resonance imaging of the effect of zeolite on lithium uptake in poplar, Env. Sci Tech, 41, 3444-3448.
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