Now showing items 273-292 of 1009

    • (e, 2e) spectrometer for investigating the spectral momentum density of thin-films 

      Ritter, A. L.; Dennison, J. R.; Dunn, J. (AIP Publishing, 1984-08)
      An (e, 2e) spectrometer has been constructed for detecting scattered and recoiling electrons from a thin solid film. The cross section for observing the two electrons in coincidence is proportional to the spectral momentum ...
    • Earth’s Biosphere in Peril 

      Cairns, John (2011-03)
      Sustainable use of the planet is an attractive goal, especially concerning intergenerational ethics. However, a major ecological tipping point has been passed (e.g, melting glaciers) and, in the last three years, evidence ...
    • Eco-Ethics and Sustainability Ethics 

      Cairns, John (Ethics in Science and Environmental Politics, 2014-01-22)
      This book is part two of a collection of John Cairns, Jr's papers and articles highlighting the importance of eco-ethics and sustainability ethics in protecting the biospheric life support system.
    • Eco-Ethics and Sustainability Ethics 

      Cairns, John (Ethics in Science and Environmental Politics, 2014-01-22)
      This book is part one of a collection of John Cairns, Jr's papers and articles highlighting the importance of eco-ethics and sustainability ethics in protecting the biospheric life support system.
    • Eco-Ethics and Sustainablility Ethics to Protect the Biospheric Life Support System 

      Cairns, John (National Academy of Sciences, 2014-01-22)
      Eco-ethics, used in the local and regional context, are considered the essential foundation for sustainable use of the planet and consists of a series of value judgments to which humanity is committed. Sustainability ethics, ...
    • Eco-ethics and the Biosphere 

      Cairns, John (Science and Society, 2014-01-22)
      Sustainable use of the planet is an attractive goal, especially concerning intergenerational ethics. However, a major ecological tipping point has been passed (e.g, melting glaciers) and, in the last three years, evidence ...
    • Eco-logy versus Eco-nomics 

      Cairns, John (Asian Journal of Experimental Sciences, 2014-01-22)
      The spelling of the words _eco-logy and _eco-nomics in the title is intended to emphasize that both words originated from the Greek word oikos, which means household, house, or family. Despite their common origin, never ...
    • Ecological costs and benefits of defenses in nectar 

      Adler, L. S.; Irwin, R. E. (Ecological Society of America, 2005-11)
      The nectar of many plant species contains defensive compounds that have been hypothesized to benefit plants through a variety of mechanisms. However, the relationship between nectar defenses and plant fitness has not been ...
    • Ecological Overshoot is Suicidal 

      Cairns, John (EcoRes Forum, 2014-01-22)
      December 19, 1987 marks the first day that humankind began living beyond its means and created a deficit for that year. Every year since 1987, humankind has had an ecological overshoot, or used more resources than the ...
    • Ecological Restoration in an Era of Ecological Disequilibrium 

      Cairns, John (Asian Journal of Experimental Sciences, 2014-01-22)
      The current rate of ecological destruction greatly exceeds the rate of ecological repair, a situation that obviously cannot continue indefinitely. In addition, the rate of biotic impoverishment makes finding suitable species ...
    • Ecological Restoration of Alder Creek, Colorado, USA 

      Cairns, John (Science and Society, 2014-01-22)
      Partial ecological restoration of important attributes of Alder Creek, Gunnison County, CO, U.S.A., has been successful since the area has continued in its restored conditioni for over a decade. However, due to cattle ...
    • Economic models for TMDL assessment and implementation 

      Bosch, D. J.; Ogg, C.; Osei, E.; Stoecker, A. L. (American Society of Agricultural and Biological Engineers, 2006)
      The TMDL assessment and implementation process is designed to achieve designated uses for water bodies, which are set by states based on criteria including perceived costs and benefits. Setting water quality goals based ...
    • Ecotoxicology in an Era of Rapid Environmental Change 

      Cairns, John (Virginia Tech, 2014-01-22)
      Ecotoxicology involves testing that uses attributes at higher levels of biological organization as endpoints. Ecotoxicologists have been accustomed to a relatively modest rate of environmental and ecosystem change. However, ...
    • Ecotoxicology Risk Assessment for a Changing World 

      Cairns, John (Science and Society, 2014-01-22)
      Exponential economic growth has resulted in grave damage to the biospheric life support system and the ecosystems that comprise it. The ubiquitous single-species toxicity tests providecrucial evidence on death, reproductive ...
    • Effect of Ba incorporation on pressure-induced structural changes in the relaxor ferroelectric PbSc0.5Ta0.5O3 

      Welsch, A. M.; Maier, B. J.; Engel, J. M.; Mihailova, B.; Angel, R. J.; Paulmann, C.; Gospodinov, M.; Friedrich, A.; Stosch, R.; Guttler, B.; Petrova, D.; Bismayer, U. (American Physical Society, 2009-09-28)
      Pressure-induced structural changes in the canonical relaxor Pb0.78Ba0.22Sc0.5Ta0.5O3 were studied with both in-house and synchrotron single-crystal x-ray diffraction as well as Raman spectroscopy at pressures up to 9.8 ...
    • Effect of inertia on drop breakup under shear 

      Y. Y. Renardy; V. Cristini (American Institute of Physics, 2001-01)
      A spherical drop, placed in a second liquid of the same density and viscosity, is subjected to shear between parallel walls. The subsequent flow is investigated numerically with a volume-of-fluid continuous-surface-force ...
    • Effect of La doping on the ferroic order in Pb-based perovskite-type relaxor ferroelectrics 

      Maier, B. J.; Welsch, A. M.; Mihailova, B.; Angel, R. J.; Zhao, J.; Paulmann, C.; Engel, J. M.; Marshall, W. G.; Gospodinov, M.; Petrova, D.; Bismayer, U. (American Physical Society, 2011-04-07)
      The structural alteration induced by the substitution of three-valent cations with an isotropic electronic outermost shell for Pb2+ in perovskite-type relaxors was investigated in the solid solutions Pb1-xLaxSc(1+x)/2Ta(1-x)/2O3, ...
    • effect of multiple scattering on transition radiation from a dynamic interface 

      Barghouty, A. F.; Pantazopoulou, M. J. (American Physical Society, 1991-09)
      The effect of multiple scattering (long-range, small-angle elastic Coulomb collisions) on the radiation field associated with transition radiation from a nonstationary plasmalike medium is addressed with the help of a ...
    • Effect of pressure on a defect-related band-resonant vibrational mode in implanation-disordered GaAs 

      Sauncy, T.; Holtz, M.; Zallen, R. (American Physical Society, 1994-10)
      We have used hydrostatic pressure as a means for studying a resonant Raman mode observed at 47 cm(-1) in highly disordered, ion implanted, unannealed GaAs. The mode shifts weakly (-0.07 +/- 0.15 cm(-1)/GPa), supporting an ...
    • Effect of pressure on defect-related emission in heavily silicon-doped GaAs 

      Holtz, M.; Sauncy, T.; Dallas, T.; Massie, S. (American Physical Society, 1994-11)
      We report cryogenic high-pressure measurements of a defect-related emission at 1.25 eV in silicon-doped GaAs. The pressure measurements prove that the 1.25-eV photon energy is relative to the conduction band, implying a ...