Now showing items 25-44 of 44

  • Modeling three-dimensional microstructure in heterogeneous media 

    Blair, J. M.; Falconer, Ruth E.; Milne, R. E.; Young, Iain M.; Crawford, John W. (Soil Science Society of America, 2007-11)
    While it is now possible to image the three-dimensional structure of soil using high-resolution tomography, none of the techniques can simultaneously image the distribution of the resident soil microbes. This means that ...
  • Modelling interactions in fungi 

    Falconer, Ruth E.; Bown, James L.; White, Nia A.; Crawford, John W. (The Royal Society, 2008-06)
    Indeterminate organisms have received comparatively little attention in theoretical ecology and still there is much to be understood about the origins and consequences of community structure. The fungi comprise an entire ...
  • Modelling nematode movement using time-fractional dynamics 

    Hapca, Simona M.; Crawford, John W.; MacMillan, Keith; Wilson, Mike J.; Young, Iain M. (Elsevier Science B.V., Amsterdam, 2007-09-07)
    We use a correlated random walk model in two dimensions to simulate the movement of the slug parasitic nematode Phasmarhabditis hermaphrodita in homogeneous environments. The model incorporates the observed statistical ...
  • Modelling the movement and survival of the root-feeding clover weevil, Sitona lepidus, in the root-zone of white clover 

    Zhang, Xiaoxian; Johnson, Scott N.; Gregory, Peter J.; Crawford, John W.; Young, Iain M.; Murray, Philip J.; Jarvis, Steve C. (Elsevier Science B.V., Amsterdam, 2006-01)
    White clover (Trifolium repens) is an important pasture legume but is often difficult to sustain in a mixed sward because, among other things, of the damage to roots caused by the soil-dwelling larval stages of S. lepidus. ...
  • Movement of the nematode, Phasmarhabditis hermaphrodita, in a structurally heterogeneous environment 

    Hapca, Simona M.; Budha, Prem; Crawford, John W.; Young, Iain M. (Brill Academic Publishers, 2007)
    We consider the effect of structural heterogeneity on the movement of the slug-parasitic nematode, Phasmarhabditis hermaphrodita. The study involves image recording and analysis of nematode movement on a homogeneous layer ...
  • Movement of the parasitic nematode Phasmarhabditis hermaphrodita in the presence of mucus from the host slug Deroceras reticulatum 

    Hapca, Simona M.; Crawford, John W.; Rae, Robert; Wilson, Michael; Young, Iain M. (Elsevier Inc., 2007)
    Phasmarhabditis hermaphrodita is a parasitic nematode capable of killing several species of slugs including Deroceras reticulatum, the most widespread slug pest in the world. This nematode can control slug infestations in ...
  • Non-invasive techniques for investigating and modelling root-feeding insects in managed and natural systems 

    Johnson, Scott N.; Crawford, John W.; Gregory, Peter J.; Grinev, Dmitri V.; Mankin, Richard W.; Masters, Gregory J.; Murray, Philip J.; Wall, Diana H.; Zhang, Xiaoxian (Blackwell Publishing Ltd, 2007-02)
    1 Root-feeding insects are now considered to play a greater role in ecosystem processes than previously thought, yet little is known about their specific interactions with host plants compared with above-ground insect ...
  • A novel ataxia-telangiectasia mutated autoregulatory feedback mechanism in murine embryonic stem cells 

    Clyde, Robert G.; Craig, Ashley L.; Breed, Lucas de; Bown, James L.; Forrester, Leslie; Vojtesek, Borivoj; Smith, Graeme; Hupp, Ted; Crawford, John W. (The Royal Society, 2009-12)
    Ataxia-telangiectasia mutated (ATM) is known to play a central role in effecting the DNA damage response that protects somatic cells from potentially harmful mutations, and in this role it is a key anti-cancer agent. ...
  • A novel three-dimensional lattice Boltzmann model for solute transport in variably saturated porous media 

    Zhang, Xiaoxian; Bengough, A. Glyn; Deeks, Lynda K.; Crawford, John W.; Young, Iain M. (American Geophysical Union, 2002-09)
    This paper presents a lattice Boltzmann method for the advection and dispersion of solute in three-dimensional variably saturated porous media. The proposed method is based on the BGK model and discretizes the particle ...
  • Plant roots release phospholipid surfactants that modify the physical and chemical properties of soil 

    Read, D. B.; Bengough, A. G.; Gregory, P. J.; Crawford, John W.; Robinson, D.; Scrimgeour, C. M.; Young, Iain M.; Zhang, K.; Zhang, Xiaoxian (Blackwell Publishing Ltd, 2003)
    Plant root mucilages contain powerful surfactants that will alter the interaction of soil solids with water and ions, and the rates of microbial processes. •The lipid composition of maize, lupin and wheat root mucilages ...
  • Quantification of the slug parasitic nematode Phasmarhabditis hermaphrodita from soil samples using real time qPCR 

    MacMillan, Keith; Blok, Vivian; Young, Iain M.; Crawford, John W.; Wilson, Michael J. (Elsevier, 2006-12)
    Phasmarhabditis hermaphrodita is a nematode parasite that infects and kills several species of slugs. The nematode is produced commercially as a biological control agent for slug pests of agriculture and horticulture. Given ...
  • The role of modelling in identifying drug targets for diseases of the cell cycle 

    Clyde, Robert G.; Bown, James L.; Hupp, Ted R.; Zhelev, Nikolai Z.; Crawford, John W. (The Royal Society, 2006-10)
    The cell cycle is implicated in diseases that are the leading cause of mortality and morbidity in the developed world. Until recently, the search for drug targets has focused on relatively small parts of the regulatory ...
  • Simultaneous preservation of soil structural properties and phospholipid profiles: A comparison of three drying techniques 

    Deacon, L. J.; Grinev, Dmitri V.; Crawford, John W.; Harris, J.; Ritz, K.; Young, Iain M. (Elsevier, 2008-06)
    There is a need to simultaneously preserve evidence of interactions between the biological community and soil structural properties of a soil in as near an intact (natural) state as possible. Three dehydration techniques ...
  • Spatial distribution of bacterial communities and their relationships with the micro-architecture of soil 

    Nunan, Naoise; Wu, Kejian; Young, Iain M.; Crawford, John W.; Ritz, Karl (Blackwell Publishing Ltd., 2003-05-15)
    Biological soil thin-sections and a combination of image analysis and geostatistical tools were used to conduct a detailed investigation into the distribution of bacteria in soil and their relationship with pores. The ...
  • Spatial variation of effective porosity and its implications for discharge in an upland headwater catchment in Scotland 

    Deeks, L. K.; Bengough, A. G.; Low, D.; Billett, M. F.; Zhang, Xiaoxian; Crawford, John W.; Chessell, J. M.; Young, Iain M. (Elsevier, 2004-05)
    Spatial and temporal measurements of shallow sub-surface soil physical properties were made within a 1 km2 upland catchment. The surface soil layer of the catchment was organic rich (>70% organic matter) with a corresponding ...
  • Systems pathology—taking molecular pathology into a new dimension 

    Faratian, Dana; Clyde, Robert G.; Crawford, John W.; Harrison, David J. (Nature Publishing Group, 2009-08)
    The wealth of morphological, histological, and molecular data from human cancers available to pathologists means that pathology is poised to become a truly quantitative systems science. By measuring morphological parameters ...
  • Three-dimensional microorganization of the soil–root–microbe system 

    Feeney, Debbie S.; Crawford, John W.; Daniell, Tim; Hallett, Paul D.; Nunan, Naoise; Ritz, Karl; Rivers, Mak; Young, Iain M. (Springer New York, 2006-07)
    Soils contain the greatest reservoir of biodiversity on Earth, and the functionality of the soil ecosystem sustains the rest of the terrestrial biosphere. This functionality results from complex interactions between ...
  • Towards a general theory of biodiversity 

    Pachepsky, Elizaveta; Crawford, John W.; Bown, James L.; Squire, Geoff (Nature Publishing Group, 2001-04-19)
    The study of patterns in living diversity is driven by the desire to find the universal rules that underlie the organization of ecosystems. The relative abundance distribution, which characterizes the total number and ...
  • Towards an evolutionary ecology of life in soil 

    Crawford, John W.; Harris, J. A.; Ritz, K.; Young, Iain M. (Elsevier, 2005-02)
    The soil-microbe system is one of the most diverse components of the terrestrial ecosystem. The origin of this diversity, and its relation to the life-sustaining processes that are mediated by the resident microbial ...
  • Visualization, modelling and prediction in soil microbiology 

    O'Donnell, Anthony G.; Young, Iain M.; Rushton, Steven P.; Shirley, Mark D.; Crawford, John W. (Nature Publishing Group, 2007-09)
    The introduction of new approaches for characterizing microbial communities and imaging soil environments has benefited soil microbiology by providing new ways of detecting and locating microorganisms. Consequently, soil ...