Browsing College of Science (COS) by Title
Now showing items 928 of 1009

a 10 kpc scale seyfert galaxy outflow: hst/cos observations of iras f224565125
(IOP Publishing Ltd., 201206)We present analysis of the UV spectrum of the lowz AGN IRAS F224565125 obtained with the Cosmic Origins Spectrograph on board the Hubble Space Telescope. The spectrum reveals six main kinematic components, spanning a ... 
A behavioral perspective on the biophysics of the lightdependent magnetic compass: a link between directional and spatial perception?
(Company of Biologists Ltd., 201010)In terrestrial organisms, sensitivity to the Earth's magnetic field is mediated by at least two different magnetoreception mechanisms, one involving biogenic ferromagnetic crystals (magnetite/maghemite) and the second ... 
A comparison of viscoelastic stress wakes for twodimensional and threedimensional Newtonian drop deformations in a viscoelastic matrix under shear
(American Institute of Physics, 200907)A recent experimental study of a Newtonian drop suspended in a viscoelastic matrix undergoing simple shear displays a transient overshoot in drop deformation which is qualitatively similar to twodimensional (2D) numerical ... 
A computational study of nucleosomal DNA flexibility
(CELL PRESS, 200612)Molecular dynamics simulations of the nucleosome core particle and its isolated DNA free in solution are reported. The simulations are based on the implicit solvent methodology and provide insights into the nature of ... 
A discretevelocity, stationary Wigner equation
(AIP Publishing, 200011)This paper is concerned with the onedimensional stationary linear Wigner equation, a kinetic formulation of quantum mechanics. Specifically, we analyze the wellposedness of the boundary value problem on a slab of the ... 
A Dual PET/MR Imaging Nanoprobe: 124I Labeled Gd3N@C80
(MDPI, 20120510)The current report describes the development of a dual modality tomographic agent for both positron emission tomography and magnetic resonance imaging (PET/MRI). The dualmodality agent in this study was based on a 124I ... 
A finite element splitting extrapolation for second order hyperbolic equations
(Siam Publications, 2009)Splitting extrapolation is an efficient technique for solving large scale scientific and engineering problems in parallel. This article discusses a finite element splitting extrapolation for second order hyperbolic equations ... 
A general convergence analysis of some Newtontype methods for nonlinear inverse problems
(Siam Publications, 2011)We consider the methods x(n+1)(delta)  x(n)(delta)  g(alpha n) (F'(x(n)(delta))* F'(x(n)(delta)))F'(x(n)(delta))*(F(x(n)(delta))  y(delta)) for solving nonlinear illposed inverse problems F(x) = y using the only available ... 
A highfield adiabatic fast passage ultracold neutron spin flipper for the UCNA experiment
(AIP Publishing, 201207)The UCNA collaboration is making a precision measurement of the beta asymmetry (A) in free neutron decay using polarized ultracold neutrons (UCN). A critical component of this experiment is an adiabatic fast passage neutron ... 
A hybrid collocation method for volterra integral equations with weakly singular kernels
(Siam Publications, 2003)The commonly used graded piecewise polynomial collocation method for weakly singular Volterra integral equations may cause serious roundoff error problems due to its use of extremely nonuniform partitions and the sensitivity ... 
A lowfrequency radio array for space
(EDP SCIENCES, 198804)At the lowest radio frequencies (<30 MHz), the Earth's ionosphere transmits poorly or not at all. This relatively unexplored region of the electromagnetic spectrum is thus an area where high resolution, high sensitivity ... 
A Model to Predict the Impact of Specification Changes on ChlorideInduced Corrosion Service Life of Virginia Bridge Decks
(Virginia Center for Transportation Innovation and Research, 200210), FHWA/VTRC 03CR4A model to determine the time to first repair and subsequent rehabilitation of concrete bridge decks exposed to chloride deicer salts that recognizes and incorporates the statistical nature of factors affecting the corrosion ... 
A Network Biology Approach to Denitrification in Pseudomonas aeruginosa
(20150223)Pseudomonas aeruginosa is a metabolically flexible member of the Gammaproteobacteria. Under anaerobic conditions and the presence of nitrate, P. aeruginosa can perform (complete) denitrification, a respiratory process of ... 
a new method of surfaceresistance measurement with a niobium triaxial cavity working at 2K
(AIP Publishing, 199307)A 1.5GHz superconducting niobium triaxial cavity has been fabricated to study residual surface resistance of superconducting materials at 2 K. Unlike many other structures where the entire test samples have to be placed ... 
A New Population of Highz, Dusty Lyα Emitters and Blobs Discovered by WISE: Feedback Caught in the Act?
(IOP PUBLISHING LTD, 201306)By combining data from the NASA Widefield Infrared Survey Explorer (WISE) mission with optical spectroscopy from the W. M. Keck telescope, we discover a midIR color criterion that yields a 78% success rate in identifying ... 
a note on the general likelihood measure of overlap
(Ecological Society of America, 1984) 
A note on the iteration of the Chandrasekhar nonlinear Hequation
(AIP Publishing, 197904)An iteration scheme to solve the Chandrasekhar H equation in the form H (_) ={1___F_ 1 0[_ (s) H (s)]/(s +_) d s}_1 is shown to converge monotonically and uniformly. 
A note on the switching adiabatic theorem
(AIP Publishing, 201210)We derive a nearly optimal upper bound on the running time in the adiabatic theorem for a switching family of Hamiltonians. We assume the switching Hamiltonian is in the Gevrey class G(alpha) as a function of time, and we ... 
a numerical study of periodic disturbances on twolayer Couette flaw
(AIP Publishing, 199812)The flow of two viscous liquids is investigated numerically with a volume of fluid scheme. The scheme incorporates a semiimplicit Stokes solver to enable computations at low Reynolds numbers, and a secondorder velocity ... 
a population of z > 2 farinfrared herschelspireselected starbursts
(IOP Publishing Ltd., 201212)We present spectroscopic observations for a sample of 36 HerschelSpire 250500 mu m selected galaxies (HSGs) at 2 < z < 5 from the Herschel Multitiered Extragalactic Survey. Redshifts are confirmed as part of a large ...