Now showing items 891-910 of 911

  • wall energy relaxation in the Cahn-Hilliard model for moving contact lines 

    Yue, P. T.; Feng, J. J. (AIP Publishing, 2011-01)
    The Cahn-Hilliard model uses diffusion between fluid components to regularize the stress singularity at a moving contact line. In addition, it represents the dynamics of the near-wall layer by the relaxation of a wall ...
  • water relations of the eggs of anolis-auratus and anolis-limifrons 

    Andrews, R. M.; Sexton, O. J. (Ecological Society of America, 1981)
    Eggs of Anolis auratus and Anolis limifrons were incubated on soil substrates differing in matric potential of soil water. Eggs of both species hatched after a mean incubation time of 44 d on soils with matric potentials ...
  • Water-Dispersible Cationic Polyurethanes Containing Pendant Trialkylphosphoniums 

    Zhang, Musan; Hemp, Sean T.; Zhang, Mingqiang; Allen, Michael H., Jr.; Carmean, Richard N.; Moore, Robert B.; Long, Timothy E. (The Royal Society of Chemistry, 2014-03-06)
    Novel trialkylphosphonium ionic liquids chain extenders enabled the successful synthesis of poly(ethylene glycol)-based, cationic polyurethanes with pendant phosphoniums in the hard segments (HS). Aqueous size exclusion ...
  • water-pollution monitoring using matched spatial filters 

    Almeida, S. P.; Eu, J. K. T. (Optical Society of America, 1976-02)
    Presented are some results obtained from the application of matched spatial filtering techniques to the identification of biological specimens called diatoms (i.e., water algae). A prototype semiautomatic optical processor ...
  • wave operators for the matrix Zakharov-Shabat system 

    Klaus, M.; van der Mee, C. (AIP Publishing, 2010-05)
    In this article, we prove the similarity (and, in the focusing case, the J-unitary equivalence) of the free Hamiltonian and the restriction of the full Hamiltonian to the maximal invariant subspace on which its spectrum ...
  • wave scattering in one dimension with absorption 

    Aktosun, T.; Klaus, M.; van der Mee, C. (AIP Publishing, 1998-04)
    Wave scattering is analyzed in a one-dimensional nonconservative medium governed by the generalized Schrodinger equation d(2) psi/dx(2)+k(2) psi=[ikP(x)+Q(x)]psi, where P(x) and Q(x) are real, integrable potentials with ...
  • We Can Never Do Merely One Thing 

    Cairns, John (EcoRes Forum, 2014-01-22)
    Tunnel vision, or just doing one thing, is not suitable with the idea of ecocentricity. For example, the quick _solution of making ethanol from corn for fuel caused more problems than it solved. The lack of awareness of ...
  • weak hard x-ray emission from two broad absorption line quasars observed with nustar: compton-thick absorption or intrinsic x-ray weakness? 

    Luo, B.; Brandt, W. N.; Alexander, D. M.; Harrison, F. A.; Stern, D.; Bauer, F. E.; Boggs, S. E.; Christensen, F. E.; Comastri, A.; Craig, W. W.; Fabian, A. C.; Farrah, D.; Fiore, F.; Fuerst, F.; Grefenstette, B. W.; Hailey, C. J.; Hickox, R.; Madsen, K. K.; Matt, G.; Ogle, P.; Risaliti, G.; Saez, C.; Teng, S. H.; Walton, D. J.; Zhang, W. W. (IOP Publishing Ltd., 2013-08)
    We present Nuclear Spectroscopic Telescope Array (NuSTAR) hard X-ray observations of two X-ray weak broad absorption line (BAL) quasars, PG 1004+130 (radio loud) and PG 1700+518 (radio quiet). Many BAL quasars appear X-ray ...
  • Wear it Out, Use it Up, Make it Do, Do Without 

    Cairns, John (Virginia Tech, 2014-01-22)
    With the era of cheap, abundant fossil energy ending, the acquisition and production of material goods will be diminished. The availability per capita will depend primarily on two factors. First, it will depend on the ...
  • What does the yield curve tell us about exchange rate predictability? 

    Chen, Yu-Chin; Tsang, Kwok Ping (MIT Press, 2013-03)
    Since the term structure of interest rates embodies information about future economic activity, we extract relative Nelson-Siegel (1987) factors from cross-country yield curve differences to proxy expected movements in ...
  • Where Do We Come From? What Are We? Where Are We Going?: Ethics in an Era of Human_Influenced Rapid Climate Change 

    Cairns, John (Asian Journal of Experimental Sciences, 2014-01-22)
    In early 2009, humankind was afflicted with a global financial meltdown that, in the United States, has resulted in loss of employment for persons who had thought their jobs were secure. Many individuals who already retired ...
  • Why is Humankind Eliminating its Future 

    Cairns, John (Virginia Tech, 2014-01-22)
    Scientific evidence on climate change, including global warming, is more abundant than ever, but politicians and citizens are rejecting or attacking scientists for the evidence they have found. Science is reality based on ...
  • wise detections of known QSOs at redshifts greater than six 

    Blain, A. W.; Assef, R.; Stern, D.; Tsai, C. W.; Eisenhardt, P.; Bridge, C.; Benford, D.; Jarrett, T.; Cutri, R.; Petty, S.; Wu, J. W.; Wright, E. L. (IOP Publishing Ltd., 2013-12)
    We present WISE All-Sky mid-infrared (IR) survey detections of 55% (17/31) of the known QSOs at z > 6 from a range of surveys: the SDSS, the CFHT-LS, FIRST, Spitzer, and UKIDSS. The WISE catalog thus provides a substantial ...
  • Wolfgang von Ohnesorge 

    G. H. McKinley; M. Renardy (American Institute of Physics, 2011-12)
    This manuscript got started when one of us (G.H.M.) presented a lecture at the Institute of Mathematics and its Applications at the University of Minnesota. The presentation included a photograph of Rayleigh and made ...
  • Women's College Decisions: How Much Does Marriage Matter? 

    Ge, S. Q. (University of Chicago Press, 2011-10)
    This article investigates the sequential college attendance decision of young women and quantifies the effect of marriage expectations on their decision to attend and graduate from college. A dynamic choice model of college ...
  • Wulff shapes and the critical nucleus for a triangular Ising lattice 

    Shneidman, V. A.; Zia, R. K. P. (American Physical Society, 2001-02)
    Equilibrium Wulff shapes and interfacial energies of two-dimensional "crystals" on a triangular lattice are considered. Asymptotic approximations are constructed for both the shapes and energies in the limit T-->0 where ...
  • x-ray absorption analysis of MCG-6-30-15: discerning three kinematic systems 

    Holczer, T.; Behar, E.; Arav, N. (IOP Publishing Ltd., 2010-01)
    By analyzing the X-ray spectrum of MCG -6-30-15 obtained with the High Energy Transmission Grating (HETGS) spectrometer on board the Chandra observatory, we identify three kinematically distinct absorption systems; two ...
  • XMM-Newton RGS observation of the warm absorber in Mrk 279 

    Ebrero, J.; Constantini, E.; Kaastra, J. S.; Detmers, R. G.; Arav, N.; Kriss, G. A.; Korista, K. T.; Steenbrugge, K. C. (EDP Sciences, 2010-09/10)
    Context. The Seyfert 1 galaxy Mrk 279 was observed by XMM-Newton in November 2005 on three consecutive orbits, showing significant short-scale variability (average soft band variation in flux ~20%). The source is known to ...
  • XMM-Newton unveils the complex iron K alpha region of Mrk 279 

    Costantini, E.; Kaastra J. S.; Korista, K.; Ebrero, J.; Arav, N.; Kriss, G.; Steenbrugge, K. C. (EDP Sciences, 2010-03/04)
    We present the results of a similar to 160 ks-long XMM-Newton observation of the Seyfert 1 galaxy Mrk 279. The spectrum shows evidence of both broad and narrow emission features. The FeK alpha line may be equally well ...
  • You and Earth's Resources 

    Cairns, John (Ethics in Science and Environmental Politics, 2014-01-22)
    Earth is a finite planet with finite resources, so any decisions humankind makes in the beginning of the twenty-first century will affect the lives of not only the future generation but the current generation as well. The ...