A Diffusion Exchange Model for Solute Movement in Fissured Porous Rock (9999)
A model of solute movement in an idealized, fissured, porous medium, involving diffusion exchange between mobile fissure-water and immobile pore-water, is formulated mathematically and solved...
Landfill Science Research Needs: After the EU Landfill Directive (2007)
Powrie, W., Beaven, R.P., Watson, G.V.R, Richards, D.J., Barker, J.A., White, J.K., ...
Barker, J.A., Connell, L.D., Atkinson, T.C., Darling, W.G., Cooper, J.D.
A tracer test was carried out in the unsaturated Chalk at the Fleam Dyke research site in Cambridgeshire, UK, to investigate the role of the Chalk fractures and matrix in unsaturated flow and solute...
Generalized diffusion equation for anisotropic anomalous diffusion (2006)
Motivated by studies of comblike structures, we present a generalization of the classical diffusion equation to model anisotropic, anomalous diffusion. We assume that the diffusive flux is given by a...
Generalized diffusion equation for anisotropic anomalous diffusion (2006)
Motivated by studies of comblike structures, we present a generalization of the classical diffusion equation to model anisotropic, anomalous diffusion. We assume that the diffusive flux is given by a...
Karstic behaviour of groundwater in the English chalk (2006)
Maurice, L.D., Atkinson, T.C., Barker, J.A., Bloomfield, J.P., Farrant, A.R., Williams, A.T.
Although the Chalk is only weakly karstified, tracer testing from stream sinks has demonstrated groundwater flow velocities comparable to those observed in highly karstic aquifers. Field survey of...
Fretwel, B.A., Burgess, W.G., Barker, J.A., Jefferies, N.L.
Large seasonal fluctuations of the water table are characteristic of aquifers with a low specific yield, including those fractured, double-porosity aquifers that have significant matrix porosity...
Fretwell, B.A., Burgess, W.G., Barker, J.A., Jefferies, N.L.
Large seasonal fluctuations of the water table are characteristic of aquifers with a low specific yield, including those fractured, double-porosity aquifers that have significant matrix porosity...
Bromley, J., Barker, J.A., Robinson, M.
The hydraulic conductivity (K) of many low permeability materials is strongly scale-dependent. In raised mires and other types of peat deposit the effects of features such as abandoned infilled...
Determination of convex bodies by certain sets of sectional volumes (2001)
Suppose that K and L are convex bodies in with Lint K. For each hyperplane which supports L, define fK,L(H)=|K∩H|, where |·| denotes the n−1-dimensional Lebesgue measure. We conjecture that K is...
Double-resonance spectroscopy of InAsÕGaAs self-assembled quantum dots (2000)
Murdin, B. N., Hollingworth, A. R., Barker, J. A., Clarke, D. G., Findlay, P. C., Pidgeon, C. R., ...
We present far-/near-infrared double resonance measurements of self-assembled InAs/GaAs quantum dots. The far-infrared resonance is unambiguously associated with a bound-bound intraband transition in...
Kennelly, J.C., Lane, M.P., Barker, J.A., Barber, G., Tinwell, H., Gallagher, J.E., ...
An acknowledged weakness of current testing programmes for genotoxic hazard has been the potential insensitivity of the established mouse bone marrow micronucleus test and rat liver unscheduled DNA...
Kennelly, J.C., Lane, M.P., Barker, J.A., Barber, G., Tinwell, H., Gallagher, J.E., ...
Carcinogenesis, 14(1993) S.637-43