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  1. Article

    Open Access

    Pheasant release in Great Britain: long-term and large-scale changes in the survival of a managed bird

    The release of artificially reared pheasants is a widespread practice in Great Britain, used to increase the number of birds available for hunting. We examined the spatial and temporal patterns of release and ...

    P. A. Robertson, A. C. Mill, S. P. Rushton… in European Journal of Wildlife Research (2017)

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  2. Article

    Open Access

    Removal of American mink (Neovison vison) from the Uists, Outer Hebrides, Scotland

    Since esca** from fur farms in the 1950s, American mink had colonised the 2800 km2 archipelago of the Outer Hebrides of Scotland. Between November 2001 and June 2006 the species was removed from a total of 850 ...

    S. S. Roy, A. L. M. Chauvenet, P. A. Robertson in Biological Invasions (2015)

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  3. No Access

    Article

    Hybrid-electric propulsion for automotive and aviation applications

    In parallel with the automotive industry, hybrid-electric propulsion is becoming a viable alternative propulsion technology for the aviation sector and reveals potential advantages including fuel savings, lowe...

    C. Friedrich, P. A. Robertson in CEAS Aeronautical Journal (2015)

  4. Article

    Open Access

    Towards the European eradication of the North American ruddy duck

    The North American ruddy duck is an invasive alien species in Europe, which threatens the native white-headed duck through hybridisation. A substantial population established in the UK following escapes and re...

    P. A. Robertson, T. Adriaens, A. Caizergues, P. A. Cranswick… in Biological Invasions (2015)

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  5. No Access

    Article

    Amorphous Hydrogenated Silicon Thin film Transistors Manufactured by a Photo-CVD Technique

    In this paper we report on the production of thin film transistors using a novel photo-enhanced chemical vapour deposition process. Both the active layer, amorphous silicon, and the gate dielectric, silicon di...

    Stephen D. Baker, W. I. Milne, P. A. Robertson in MRS Online Proceedings Library (2011)

  6. No Access

    Chapter

    Woodland management and butterfly diversity

    Woodland provides a diverse range of habitats for British butterflies. Nearly three-quarters of Britain’s resident species regularly breed in woodland, and about one-third are found exclusively or primarily in...

    P. A. Robertson, S. A. Clarke, M. S. Warren in Ecology and Conservation of Butterflies (1995)

  7. No Access

    Chapter

    Coppice management for pheasants

    The pheasant (Phasianus colchicus) is the most numerous gamebird in Britain. It comprises over 80% of all quarry species shot and is the mainstay of lowland game shooting with at least eight million birds shot pe...

    C. E. Bealey, P. A. Robertson in Ecology and Management of Coppice Woodlands (1992)

  8. No Access

    Article

    Photoenhanced deposition of silicon oxide thin films using a novel windowless internal nitrogen discharge lamp

    This paper reviews the production of silicon oxide thin films using a novel photoenhanced deposition technique incorporating a windowless nitrogen discharge lamp contained within the deposition vessel. This pr...

    S. D. Baker, W. I. Milne, P. A. Robertson in Applied Physics A (1988)

  9. No Access

    Article

    Photoenhanced deposition of silicon oxide thin films using a novel windowless internal nitrogen discharge lamp

    This paper reviews the production of silicon oxide thin films using a novel photoenhanced deposition technique incorporating a windowless nitrogen discharge lamp contained within the deposition vessel. This pr...

    S. D. Baker, W. I. Milne, P. A. Robertson in Applied Physics A (1988)

  10. No Access

    Article

    Hydrogenated Amorphous Silicon Thin-Film Deposition by Direct Photo-Enhanced Decomposition of Silane Using an Internal Hydrogen Discharge Lamp

    Hydrogenated amorphous silicon (a-Si:H) thin films have been deposited from silane using a novel photo-enhanced decomposition technique. The system comprises a hydrogen discharge lamp contained within the reac...

    P. A. Robertson, W. I. Milne in MRS Online Proceedings Library (1986)

  11. No Access

    Article

    Calcium and Contractility in Depolarized Smooth Muscle

    IT has been postulated that calcium ions act as the link between depolarization and contraction in cardiac1 and skeletal muscle2. This hypothesis is based on the results of experiments relating the effect of depo...

    P. A. ROBERTSON in Nature (1960)

  12. No Access

    Article

    Purkinje and Ventricular Membrane Resistances during the Rising Phase of the Action Potential

    USING double-barrelled micro-electrodes, one barrel for recording the other for passing current, it has been found possible to observe the effects of hyper -and de-polarizing currents on the membrane behaviour...

    EDWARD A. JOHNSON, P. A. ROBERTSON, J. J. TILLE in Nature (1958)

  13. No Access

    Article

    An Indirect Action of Angiotensin I on Smooth Muscle

    THE stimulatory action of angiotensin I (angiotonin, hypertensin) on isolated ileal segments was investigated to determine whether this action is entirely a direct one on the muscle fibre. Some evidence for an...

    P. A. ROBERTSON, DANA RUBIN in Nature (1958)

  14. No Access

    Article

    Effect of Acetylcholine on the Membrane Resistance and Threshold of Atrial Muscle Fibres

    THERE is substantial indirect evidence that acetylcholine increases the conductance of the atrial muscle membrane probably by increasing the permeability to K+ and Cl− 1,2. In addition, acetylcholine has an effec...

    EDWARD A. JOHNSON, P. A. ROBERTSON in Nature (1958)

  15. No Access

    Article

    Effect of Acetylcholine and Quinidine on Atrial Cellular Potentials

    Briscoe and Burn1 have shown that acetylcholine will restore the spontaneous contractions of rabbit atria which have been arrested by quinidine. Armitage2 has suggested that quinidine impairs repolarization by re...

    EDWARD A. JOHNSON, P. A. ROBERTSON in Nature (1957)

  16. No Access

    Article

    A Second Oxytocin in the Hypothalamus

    RECENTLY1, we compared oxytocin blood-levels in women during non-pregnancy, pregnancy, labour and lactation under similar conditions of blood collection, extraction and assay, using the sensitized virgin rat uter...

    P. A. ROBERTSON, R. W. HAWKER in Nature (1957)