Search Results - (Author, Cooperation:P. J. Ross)

Showing 1 - 11 results of 11, query time: 0.19s Refine Results
  1. 1
    Staff View
    Publication Date:
    2015-05-07
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; Cell Culture Techniques/methods ; Cell Line ; *Chimera ; Embryonic Stem Cells/cytology ; Female ; Germ Layers/cytology ; Humans ; Induced Pluripotent Stem Cells/cytology ; Male ; Mice ; Pan troglodytes ; Pluripotent Stem Cells/*cytology/metabolism ; Regenerative Medicine ; Species Specificity
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2013-06-07
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    *Alternative Splicing/genetics ; Amino Acid Motifs ; Animals ; Cell Differentiation/genetics ; Cell Line ; *Cellular Reprogramming ; DNA-Binding Proteins/chemistry/deficiency/genetics/*metabolism ; Embryonic Stem Cells/*cytology/*metabolism ; Fibroblasts/cytology/metabolism ; Forkhead Transcription Factors/metabolism ; Gene Knockdown Techniques ; HEK293 Cells ; HeLa Cells ; Humans ; Induced Pluripotent Stem Cells/cytology/metabolism ; Kinetics ; Mice ; RNA-Binding Proteins/chemistry/genetics/*metabolism ; Repressor Proteins/metabolism
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    ROSS, P. J. ; MARTIN, A. E. ; HENZELL, E. F.

    [s.l.] : Nature Publishing Group
    Published 1964
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] LOSSES of nitrogen from the soil: plant system have never been measured directly, and gains have almost always been estimated from conventional nitrogen balance experiments. Quantitative knowledge of changes in nitrogen occurring in an enclosed atmosphere surrounding the system should not only ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/204444a0

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    1569-8041
    Keywords:
    ambulatory chemotherapy ; 5-fluoruouracil ; protracted venous iinfusion
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1008274522483

    Articles: DFG German National Licenses
  5. 5
    Ross, P. J. 〈Jr〉

    Philadelphia : Periodicals Archive Online (PAO)
    Published 1942
    Staff View
    ISSN:
    0037-7996
    Topics:
    History
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3111-1942-033-05-000002

    Articles: DFG German National Licenses
  6. 6
    Ross, P. J. 〈Jr〉

    Philadelphia : Periodicals Archive Online (PAO)
    Published 1939
    Staff View
    ISSN:
    0037-7996
    Topics:
    History
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3111-1939-030-04-000008

    Articles: DFG German National Licenses
  7. 7
    Staff View
    ISSN:
    1573-1634
    Keywords:
    nonlinear diffusion ; analytic solutions ; exact solutions ; approximations ; similarity
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Geosciences
    Technology
    Notes:
    Abstract A general approximation for the solution of the one-dimensional nonlinear diffusion equation is presented. It applies to arbitrary soil properties and boundary conditions. The approximation becomes more accurate when the soil-water diffusivity approaches a delta function, yet the result is still very accurate for constant diffusivity suggesting that the present formulation is a reliable one. Three examples are given where the method is applied, for a constant water content at the surface, when a saturated zone exists and for a time-dependent surface flux.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1006508721609

    Articles: DFG German National Licenses
  8. 8
    Ross, P. J. ; Parlange, J. -Y. ; Haverkamp, R.
    Springer
    Published 1995
    Staff View
    ISSN:
    1573-1634
    Keywords:
    Porous media ; water movement ; analytical solutions ; numerical solutions ; two-dimensional solutions ; impervious layers
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Geosciences
    Technology
    Notes:
    Abstract Wetting-front movement can be impaired whenever the flow region includes boundaries such as the soil surface, seepage faces, planes of symmetry, or actual layers that are effectively impermeable, such as heavy clays or coarse materials below the water-entry pressure. An approximate analytical solution for interaction of flow from a line source with a parallel plane, impervious layer is derived. The solution ignores gravity and assumes a particular diffusivity that is related to the constant flow rate. It is exact until interaction begins, and provides an accurate approximation for short times thereafter. It can therefore be used to test the accuracy of numerical solutions of the flow equation, which can then be used with confidence for later times when the analytical approximation breaks down, for instance because gravity is ignored. A finite difference solution was tested in this way for both gradual and steep wetting fronts. Agreement between the two solutions was excellent for the gradual front, with the analytical approximation only slightly in error at later times. Numerical errors at the steep front were much greater; an accurate solution needed a finer spatial grid and a restart from the exact analytical values at the beginning of the interaction. The analytical approximation, though not as accurate as for the gradual front, was still ‘good’.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01073175

    Articles: DFG German National Licenses
  9. 9
    Ross, P. J. ; Haverkamp, R. ; Parlange, J. -Y.
    Springer
    Published 1996
    Staff View
    ISSN:
    1573-1634
    Keywords:
    water movement ; infiltration ; water balance ; analytical solutions ; hydraulic properties
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Geosciences
    Technology
    Notes:
    Abstract Simple equations for predicting infiltration of water into soil are valuable both for hydrological application and for investigating soil hydraulic properties. Their value is greatly enhanced if they involve parameters that can be related to more basic soil hydraulic properties. In this paper we extend infiltration equations developed previously for positive surface heads to negative heads. The equations are then used to calculate infiltration into a sand and a clay for a range of initial and surface conditions. Results show errors of less than three percent compared with accurate numerical solutions. Analytical approximations to parameters in the equations are developed for a Brooks and Corey power law hydraulic conductivity-water content relation combined with either a Brooks and Corey or a van Genuchten water retention function. These are compared with accurate numerical values for a range of hydraulic parameters encompassing the majority of soil types and a range of initial and boundary conditions. The approximations are excellent for a wide range of soil parameters. An important attribute of the infiltration equations is their use of dimensionless parameters that can be calculated from normalised water retention and hydraulic conductivity functions. These normalised functions involve only parameters that it may be possible to estimate from surrogate data such as soil particle size distribution. Application of the equations for predicting infiltration, or their use in inferring hydraulic properties, then involves only simple scaling parameters.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00154096

    Articles: DFG German National Licenses
  10. 10
    Cote, C. M. ; Bristow, K. L. ; Ross, P. J.
    Springer
    Published 1999
    Staff View
    ISSN:
    1435-0661
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Geosciences
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/

    Articles: DFG German National Licenses
  11. 11
    Martin, A. E. ; Ross, P. J.
    Springer
    Published 1968
    Staff View
    ISSN:
    1573-5036
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    Summary A gas lysimeter study showed negligible losses of gaseous N2 or N2O from rhodes grass plants growing in soil fertilized with either (N15H4)2SO4 or KN15O3; isotope recovered from the soil: plant system averaged respectively 100.5% and 98.9%; neither differed significantly from 100%. Small amounts of ammonia were volatilized into lysimeter atmospheres, averaging 0.6% of that applied as labelled ammonium-N and 0.1% of that as nitrate-N. The importance of these findings is discussed in relation to the conduct of N balance studies.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01349189

    Articles: DFG German National Licenses