Now showing items 603-622 of 49191

    • Absence of Anomalous Copper Vibrations in YBa2 Cu3O7−δ 

      Hecker, N. E.; Mook, H. A.; Harvey, J. A.; Hill, N. W.; Moxon, M. C.; Golovchenko, Jene Andrew (American Physical Society (APS), 1994)
      We find a normal temperature dependence for the Doppler broadening of the 230-eV resonance in the neutron cross section of Cu65 atoms in YBa2Cu3O7 between 10 and 300 K. No abrupt changes in the copper momentum spectrum ...
    • Absence of discontinuities in ion-channeling parameters for YBa2 Cu3O7−δ thin films 

      Hecker, N. E.; Haakenaasen, R.; Golovchenko, Jene Andrew; Chervinsky, J; Eom, C. B. (American Physical Society (APS), 1997)
      We have measured the ion-channeling minimum yield (χmin) and angular width (Ψ1/2) for Y, Ba, Cu, and O in 2000 Å (001)-oriented films of YBa2Cu3O7−δ on MgO. The measurements mapped out a 30 K region around the critical ...
    • Absence of Disorder-Driven Metal-Insulator Transitions in Simple Holographic Models 

      Grozdanov, Sašo; Lucas, Andrew James; Sachdev, Subir; Schalm, Koenraad (American Physical Society (APS), 2015)
      We study electrical transport in a strongly coupled strange metal in two spatial dimensions at finite temperature and charge density, holographically dual to the Einstein-Maxwell theory in an asymptotically four-dimensional ...
    • Absence of Dopaminergic Neuronal Degeneration and Oxidative Damage in Aged DJ-1-deficient Mice 

      Yamaguchi, Hiroo; Shen, Jie (BioMed Central, 2007)
      Parkinson's disease is the most common movement disorder characterized by dopaminergic dysfunction and degeneration. Loss-of-function mutations in the DJ-1 gene have been linked to autosomal recessive forms of early-onset ...
    • Absence of evidence for increase in risk for autism or attention-deficit hyperactivity disorder following antidepressant exposure during pregnancy: a replication study 

      Castro, V M; Kong, S W; Clements, C C; Brady, R; Kaimal, A J; Doyle, A E; Robinson, E B; Churchill, S E; Kohane, I S; Perlis, R H (Nature Publishing Group, 2016)
      Multiple studies have examined the risk of prenatal antidepressant exposure and risk for autism spectrum disorder (ASD) or attention-deficit hyperactivity disorder (ADHD), with inconsistent results. Precisely estimating ...
    • Absence of Extraterrestrial 3He in Permian–Triassic Age Sedimentary Rocks 

      Farley, K. A.; Ward, P.; Garrison, G.; Mukhopadhyay, Sujoy (Elsevier Science BV, 2005)
      Helium concentration and isotopic composition were measured in a suite of samples across the Permian–Triassic boundary at Opal Creek, Canada, to determine whether high extraterrestrial helium concentrations are associated ...
    • The Absence of Obstructive Sleep Apnea May Protect against Non-Alcoholic Fatty Liver in Patients Undergoing Bariatric Surgery 

      Corey, Kathleen Elizabeth; Misdraji, Joseph; Zheng, Zheng; Malecki, Kyle M.; Kneeman, Jacob; Gelrud, Louis; Chung, Raymond Taeyong (Public Library of Science, 2013)
      Background: Non-alcoholic fatty liver disease (NAFLD) is the most common cause of liver disease worldwide and its progressive form, steatohepatitis, will be the leading indication for liver transplant by 2020. While risk ...
    • Absence of Quantum Oscillations and Dependence on Site Energies in Electronic Excitation Transfer in the Fenna–Matthews–Olson Trimer 

      Ritschel, Gerhard; Roden, Jan; Strunz, Walter T.; Aspuru-Guzik, Alán; Eisfeld, Alexander Jurgen (American Chemical Society, 2011)
      Energy transfer in the photosynthetic Fenna–Matthews–Olson (FMO) complex of green sulfur bacteria is studied numerically taking all three subunits (monomers) of the FMO trimer and the recently found eighth bacteriochlorophyll ...
    • Absence of red structural color in photonic glasses, bird feathers, and certain beetles 

      Magkiriadou, Sofia; Park, Jin-Gyu; Kim, Young-Seok; Manoharan, Vinothan N. (American Physical Society (APS), 2014)
      Colloidal glasses, bird feathers, and beetle scales can all show structural colors arising from short-ranged spatial correlations between scattering centers. Unlike the structural colors arising from Bragg diffraction in ...
    • Absolute Enrichment: Gene Set Enrichment Analysis for Homeostatic Systems 

      Saxena, Vishal; Orgill, Dennis Paul; Kohane, Isaac Samuel (Oxford University Press, 2006)
      The Gene Set Enrichment Analysis (GSEA) identifies sets of genes that are differentially regulated in one direction. Many homeostatic systems will include one limb that is upregulated in response to a downregulation of ...
    • Absolute Humidity and the Seasonal Onset of Influenza in the Continental United States 

      Shaman, Jeffrey; Pitzer, Virginia E.; Viboud, Cécile; Grenfell, Bryan T.; Lipsitch, Marc (Public Library of Science, 2010)
      Much of the observed wintertime increase of mortality in temperate regions is attributed to seasonal influenza. A recent reanalysis of laboratory experiments indicates that absolute humidity strongly modulates the airborne ...
    • Absolute Majority Rules 

      Vermeule, Cornelius Adrian (Cambridge University Press, 2007)
      This article considers absolute majority rules, which require the affirmative vote of a majority of all those eligible to vote in the institution. I compare absolute majority rules to simple majority rules under which only ...
    • Absolute Measurement of the Critical Behavior of the Smectic Elastic Constant of Bilayer and Monolayer Smectic-A Liquid Crystals on Approaching the Transition to the Nematic Phase 

      Fisch, M. R.; Pershan, Peter S.; Sorensen, L. B. (American Physical Society, 1984)
      A new technique which provides an absolute measurement of the smectic elastic constant B is presented. This technique measures second sound on samples whose top surface is an air—liquid-crystal interface. The free surface ...
    • Absolute Measurement of the Critical Properties of Second Sound at the Smectic-A-to-Nematic Phase Transition in 8OCB 

      Fisch, M. R.; Sorensen, L. B.; Pershan, Peter S. (American Physical Society, 1981)
      Light scattered from the driven free surface of the smectic-A phase of octyloxy cyanobiphenyl (8OCB) provides a low-frequency measurement of second sound. This yields an absolute measurement of the smectic elastic constant, ...
    • Absolute polarization angle calibration using polarized diffuse Galactic emission observed by BICEP 

      Matsumura, Tomotake; Ade, Peter; Barkats, Denis; Barron, Darcy; Battle, John O.; Bierman, Evan M.; Bock, James J.; Chiang, H. Cynthia; Crill, Brendan P.; Dowell, C. Darren; Duband, Lionel; Hivon, Eric F.; Holzapfel, William L.; Hristov, Viktor V.; Jones, William C.; Keating, Brian G.; Kovac, John M; Kuo, Chao-lin; Lange, Andrew E.; Leitch, Erik M.; Mason, Peter V.; Nguyen, Hien T.; Ponthieu, Nicolas; Pryke, Clement L.; Richter, Steffen; Rocha, Graca M.; Takahashi, Yuki D.; Yoon, Ki Won (2017-08-04)
      We present a method of cross-calibrating the polarization angle of a polarimeter using Bicep Galactic observations. Bicep was a ground based experiment using an array of 49 pairs of polarization sensitive bolometers observing ...
    • Absolute Properties of the Eclipsing Triple Star Co Andromedae: Constraints on Convective Core Overshooting 

      Lacy, Claud H. Sandberg; Torres, Guillermo; Claret, Antonio; Charbonneau, David; O’Donovan, Francis T.; Mandushev, Georgi (American Astronomical Society, 2010)
      Accurate absolute properties have been determined for the eclipsing triple star CO And (F8+F8) based on extensive differential photometry obtained by three robotic observatories and CfA spectroscopy. The eclipsing binary ...
    • Absolute Properties of the Low-Mass Eclipsing Binary CM Draconis 

      Morales, Juan Carlos; Ribas, Ignasi; Jordi, Carme; Torres, Guillermo; Gallardo, Jose; Guinan, Edward F.; Charbonneau, David; Wolf, Marek; Latham, David W.; Anglada-Escude, Guillem; Bradstreet, David H.; Everett, Mark E.; O'Donovan, Francis T.; Mandushev, Georgi; Mathieu, Robert D. (Institute of Physics, 2009)
      Spectroscopic and eclipsing binary systems offer the best means for determining accurate physical properties of stars, including their masses and radii. The data available for low-mass stars have yielded firm evidence that ...
    • Absolute quantification of somatic DNA alterations in human cancer 

      Carter, Scott L.; Cibulskis, Kristian; Helman, Elena; McKenna, Aaron; Shen, Hui; Zack, Travis; Laird, Peter W.; Onofrio, Robert C.; Winckler, Wendy; Weir, Barbara A.; Beroukhim, Rameen; Pellman, David; Levine, Douglas A.; Lander, Eric S.; Meyerson, Matthew; Getz, Gad (2015)
      We developed a computational method (ABSOLUTE) that infers tumor purity and malignant cell ploidy directly from analysis of somatic DNA alterations. ABSOLUTE can detect subclonal heterogeneity, somatic homozygosity, and ...
    • An Absolute Risk Model to Identify Individuals at Elevated Risk for Pancreatic Cancer in the General Population 

      Klein, Alison P.; Lindström, Sara; Mendelsohn, Julie B.; Steplowski, Emily; Arslan, Alan A.; Bueno-de-Mesquita, H. Bas; Fuchs, Charles S.; Gallinger, Steven; Gross, Myron; Helzlsouer, Kathy; Holly, Elizabeth A.; Jacobs, Eric J.; LaCroix, Andrea; Li, Donghui; Mandelson, Margaret T.; Olson, Sara H.; Petersen, Gloria M.; Risch, Harvey A.; Stolzenberg-Solomon, Rachael Z.; Zheng, Wei; Amundadottir, Laufey; Albanes, Demetrius; Allen, Naomi E.; Bamlet, William R.; Boutron-Ruault, Marie-Christine; Buring, Julie E.; Bracci, Paige M.; Canzian, Federico; Clipp, Sandra; Cotterchio, Michelle; Duell, Eric J.; Elena, Joanne; Gaziano, J. Michael; Giovannucci, Edward L.; Goggins, Michael; Hallmans, Göran; Hassan, Manal; Hutchinson, Amy; Hunter, David J.; Kooperberg, Charles; Kurtz, Robert C.; Liu, Simin; Overvad, Kim; Palli, Domenico; Patel, Alpa V.; Rabe, Kari G.; Shu, Xiao-Ou; Slimani, Nadia; Tobias, Geoffrey S.; Trichopoulos, Dimitrios; Van Den Eeden, Stephen K.; Vineis, Paolo; Virtamo, Jarmo; Wactawski-Wende, Jean; Wolpin, Brian M.; Yu, Herbert; Yu, Kai; Zeleniuch-Jacquotte, Anne; Chanock, Stephen J.; Hoover, Robert N.; Hartge, Patricia; Kraft, Peter (Public Library of Science, 2013)
      Purpose We developed an absolute risk model to identify individuals in the general population at elevated risk of pancreatic cancer. Patients and Methods Using data on 3,349 cases and 3,654 controls from the PanScan ...
    • Absorbed Radiation Dose in Radiosensitive Organs Using 64- and 320-Row Multidetector Computed Tomography: A Comparative Study 

      Khan, Atif N.; Shuaib, Waqas; Nikolic, Boris; Khan, Mohammad K.; Kang, Jian; Khosa, Faisal (Hindawi Publishing Corporation, 2014)
      Aim. To determine absorbed radiation dose (ARD) in radiosensitive organs during prospective and full phase dose modulation using ECG-gated MDCTA scanner under 64- and 320-row detector modes. Methods:. Female phantom was ...