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  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Pulsating stars -- Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (285 pages)
    Edition: 1st ed.
    ISBN: 9783642296307
    Series Statement: Astrophysics and Space Science Proceedings Series ; v.31
    DDC: 523.82
    Language: English
    Note: Intro -- Stellar Pulsations -- Foreword -- Preface -- Acknowledgements -- Contents -- Part I The Poor Agreement Between Observed and Predicted Frequencies -- Stellar Pulsations and Stellar Evolution: Conflict, Cohabitation, or Symbiosis? -- 1 Living Together -- 1.1 Conflicts -- 1.2 Cohabitation -- 1.3 Symbiosis -- 2 A Stellar Modeler's Wish List -- 3 Conclusions -- References -- 2D Simulations of the Interaction Between Radial Pulsation and Convection -- 1 Introduction -- 2 Radiation Diffusion Hydrodynamics Code -- 3 Calculations and Results -- References -- Vibrational Instability of Metal-Poor Low-Mass Main-Sequence Stars -- 1 Introduction -- 2 ε-Mechanism for Low-Degree Low-Order g-Modes -- 3 Low-Degree High-Order g-Modes (γ Doradus Type Oscillations) -- References -- Non-radial Pulsation and Magnetic Fields of OB Stars -- 1 Observations -- 2 Line Profile Variability -- 3 Polarimetric Line Profile Variability -- 4 Conclusions -- References -- Pulsations in Hot Massive Stars -- 1 Introduction -- 2 Models -- 3 Results -- 3.1 Outbursts -- 4 Conclusions -- References -- On the Origin of the Dense Frequency Spectra of Space Observed Intermediate Mass Pulsating Stars -- 1 Introduction -- 2 Data Analysis -- 3 Physical Parameters -- 4 HR Diagram -- 5 Conclusions -- References -- The Spectroscopic Observations of CoRoT Asteroseismic Targets with HARPS -- 1 Introduction -- 2 HARPS: Improvements in the Instrument Setup -- 3 Evidence of High-Degree Modes Excited in δ Sct Stars -- References -- Recent Progress and Open Questions in Rapidly Rotating Star Seismology -- 1 Introduction -- 2 Constructing and Using 2D Oscillation Codes -- 3 Testing the Approximate Treatments of the Rotation Effects -- 4 The Asymptotic Properties of p Modes: Numerical Computation and Ray-Based Theory -- 5 Mode Coupling -- 6 Towards Mode Identification -- 7 Conclusion. , References -- Traditional Approximation for Low-Frequency Modes in Rotating Stars and AWorking Hypothesis About Episodic Mass Loss in Be Stars -- 1 Traditional Approximation for Low-Frequency Modes in Rotating Stars -- 2 Surface Critical Cut-Off Frequency -- 3 A Working Hypothesis for Episodic Mass Loss in Be Stars -- References -- Modelling Stellar Convection and Pulsation in Multidimensions Using the ANTARES Code -- 1 Introduction -- 2 Technical Issues -- 3 Results -- 3.1 Model Settings -- 3.2 The He II Convection Zone -- 3.3 The H+He I Convection Zone -- References -- Regular Modes in Rapidly Rotating Stars -- 1 Introduction -- 2 From Stable Rays to Gaussian Beams and Pressure Modes -- 3 Conclusion -- References -- Periodicities Within the Frequency Spectra of δ Scuti Stars Observed by Kepler -- 1 Previous Results -- 2 Periodicities in the Kepler Sample -- 3 Conclusions -- References -- Oscillation Frequency Spectra at Rapid Rotation -- 1 Introduction -- 2 Results -- 2.1 Accuracy Tests -- 2.1.1 Mode Labeling -- 2.1.2 Frequency Relative Errors -- 2.2 Regularity of Frequency Spacings at Rapid Rotation -- References -- Part II Giant Stars -- Frequency Dependence of Δν of Solar-Like Oscillators Investigated: Influence of HeII Ionization Zone -- 1 Introduction -- 2 Results -- References -- Some Thoughts About the Blazhko Effect for RR Lyrae Variable Pulsations -- 1 Background -- References -- Period Doubling in Kepler RR Lyrae Stars -- 1 Period Doubling in Pulsating Variable Stars -- 2 Discovery of Period Doubling in RRLyrae Stars -- 3 Period Doubling and the Blazhko Effect -- References -- First Detection of Period Doubling in a BL Herculis Type Star: Observations and Theoretical Models -- 1 Introduction -- 2 Observations -- 3 Theoretical Models -- References -- The Projection Factor of Cepheids -- 1 Introduction. , 2 A Relation Between the Period and the Projection Factor -- 3 Toward LMC Cepheids -- References -- New Links Between Pulsation and Stellar History -- 1 Introduction -- 2 Star Formation -- 3 Stellar Evolution: Masses -- References -- Evidence for Pulsation-Driven Mass Loss from δ Cephei -- 1 Implications of Mass-Loss Processes in the Cepheid Phase -- 2 The δ Cephei Nebula -- 3 Evidence for Pulsation-Driven Mass Loss -- References -- Multi-periodic Oscillations in Cepheids and RR Lyrae-Type Stars -- 1 Blazhko Effect -- 2 Multi-mode Radial Pulsators -- 2.1 Double-Mode RR Lyrae-Type Star (RRd Stars) -- 2.2 Double-Mode Cepheids -- 2.3 Triple-Mode Cepheids -- 2.4 Secondary Modes in RRab Stars -- 2.5 Multi-mode Radial Pulsations: Theory -- 2.5.1 Linear Theory: Modeling Pulsation Periods -- 2.5.2 Nonlinear Models -- 3 Nonradial Modes in Cepheids -- 4 Mysterious Period Ratio of P/P1 0.62 -- References -- RR Lyrae Studies with Kepler -- 1 RR Lyrae Stars in the Kepler Field -- 2 Some Examples and Results -- 2.1 Time Series Analysis -- 2.2 Theoretical Modelling -- 2.3 Ground-Based Follow-Up -- 2.4 Additional Projects, and Stars! -- References -- The Nature of Variability in M Supergiants: The Forgotten Type C Semiregulars -- 1 Introduction -- 2 Light Curve Analysis -- 3 Spectroscopic Information -- References -- Pulsational Light Variability in Post-AGB Stars in the Milky Way Galaxy and the Magellanic Clouds -- 1 Introduction -- 2 Observations -- 3 Initial Results -- 4 Extending the Studies -- 5 Goals and Implications -- References -- A Testimator Approach to Detecting Heteroskedasticity in the Cepheid PL Relation -- 1 Introduction -- 2 The Testimator Approach -- 3 Results -- 4 Multiphase Results -- 5 Conclusion -- References -- Synthetic Cepheid Period-Luminosity and Period-Color Relations in Spitzer's IRAC Bands -- 1 Introduction. , 2 The Synthetic P-L and P-C Relations -- 3 Comparison to Observations -- References -- Part III New Instrumentation from the Ground and Space -- New Ground-Based Observational Methods and Instrumentation for Asteroseismology -- 1 Introduction -- 2 Mode Identification -- 3 Past and Current Instrumentation for Asteroseismology -- 4 Future of Ground-Based Instruments Useful for Asteroseismology: Conclusions and Final Remarks -- References -- Impact of High Precision Photometry from Space: Do the Results Meet the Expectations? -- 1 What Were/Are These Expectations? -- 2 Unprecedented Light Curves -- 3 Unprecedented Mode Parameters -- 4 First Interpretations vs Scientific Objectives -- 5 Conclusions -- References -- Long-Baseline Interferometric Observations of Cepheids -- 1 The Interferometric Baade-Wesselink Method -- 2 Status of Our Program -- 3 Conclusion -- References -- Programs and Perspectives of Visible Long Baseline Interferometry VEGA/CHARA -- 1 Why Measuring Angular Diameters? -- 2 What Is VEGA/CHARA? -- 3 Science Perspectives of Very Small Stellar Angular Diameter Measurements -- References -- Spectro-Interferometry Studies of Velocity-Related Phenomena at the Surface of Stars: Pulsation and Rotation -- 1 Rotation of Main Sequence Stars -- 2 Cepheids' Pulsations -- 3 Perspectives -- References -- The VISTA Variables in the Vía Láctea Survey: A First Glance on Stellar Variability -- 1 Introduction -- 2 VVV Time-Series Photometry -- 3 Summary -- References -- Solar-Like Stars Observed by Kepler: An Incredible Adventure -- 1 Introduction -- 2 Some initial results -- References -- Part IV Mode Identification -- Identification of Pulsation Modes in Main Sequence Stars: Potentials and Limits -- 1 Introduction -- 2 Mode Identification from Multicolour Photometry -- 3 Including Radial Velocity Variations -- 4 Prospects for Extracting High Modes. , 5 Conclusions -- References -- Uncovering Hidden Modes in RR Lyrae Stars -- 1 Introduction -- 2 Period Doubling -- 3 Additional Modes -- 4 Future Prospects -- References -- Complex Asteroseismology of the Slowly Pulsating B-Type Star HD74560 -- 1 Introduction -- 2 Mode Identification -- 3 Complex Asteroseismology -- 4 Conclusions -- References -- Rotation Effects as Possible Responsible for the Surface Effects on the Sun and Solar-Type Stars -- 1 Introduction -- 2 Peturbative vs. Non-perturbative Approaches -- 3 Effect of Rotation on Diagnostics of Echelle Diagrams -- 4 Conclusions -- References -- Theoretical Approach to Mode Identification -- 1 Expectations for Main Sequence Variables -- 2 Complications for Mode Identification -- 3 Expectations Not Met -- 4 What Do We Do in Practice? -- 5 Future Directions -- References -- Towards Precise Asteroseismology of Solar-Like Stars -- 1 Introduction -- 2 TDC Modeling of β Hydri -- 3 Conclusions -- References -- Part V Oscillations Versus Activity Plus Planet Transits -- Current State of the Modelling of Photospheric Activity -- 1 Introduction -- 2 Methods to Map the Photospheres of Late-Type Stars -- 3 Results -- 4 Discussion and Conclusions -- References -- Pulsating Stars Harbouring Planets -- 1 Introduction -- 2 Synergy: (Almost) the Same Instruments are Used -- 3 Noise: One Person's Noise is Another Person's Signal -- 4 Characterization: Obtain Precise Values of the Parameters of Exoplanets-Host Stars -- 5 Planet Detection Using the Timing Method -- 6 Interaction Between Star and Planet -- 7 Future Prospects -- References -- Successful Asteroseismology for a Better Characterization of the Exoplanet HAT-P-7b -- 1 Introduction -- 2 Kepler Data Processing and Frequency Analysis -- 3 Results -- References -- The New Kepler Picture of Variability Among A and F Type Stars -- 1 Motivation. , 2 Observational Classification.
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  • 2
    Book
    Book
    München : Zentralstelle für Luft- und Raumfahrtdokumentation und -information (ZLDI)
    Associated volumes
    In: 1
    Type of Medium: Book
    Pages: 20 S., [5] Bl , Ill., graph. Darst
    Series Statement: Forschungsbericht / Bundesministerium für Bildung und Wissenschaft 71,01
    Language: German
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  • 3
    Publication Date: 2014-08-02
    Description: Ischemic heart disease (IHD) is the single most common cause of death. New approaches to enhance myocardial perfusion are needed to improve outcomes for patients with IHD. Thyroid hormones (TH) are known to increase blood flow; however, their usefulness for increasing perfusion in IHD is limited because TH accelerates heart rate, which can be detrimental. Therefore, selective activation of TH effects is desirable. We hypothesized that cell-type-specific TH receptor (TR) expression can increase TH action in the heart, while avoiding the negative consequences of TH treatment. We generated a binary transgenic (BTG) mouse that selectively expresses TRα 1 in endothelial cells in a tetracycline-inducible fashion. In BTG mice, endothelial TRα 1 protein expression was increased by twofold, which, in turn, increased coronary blood flow by 77%, coronary conductance by 60%, and coronary reserve by 47% compared with wild-type mice. Systemic blood pressure was decreased by 20% in BTG mice after TRα 1 expression. No effects on heart rate were observed. Endothelial TRα 1 expression activated AKT/endothelial nitric oxide synthase pathway and increased A 2A R adenosine receptor. Furthermore, hearts from BTG mice overexpressing TRα 1 that were submitted to 20 min ischemia and 20 min reperfusion showed a 20% decline in left ventricular pressure (LVP) compared with control mice where LVP was decreased by 42%. Studies using an infarction mouse model demonstrated that endothelial overexpression of TRα 1 decreased infarct size by 45%. In conclusion, selective expression of TRα 1 in endothelial cells protects the heart against injury after an ischemic insult and does not result in adverse cardiac or systemic effects.
    Print ISSN: 0363-6119
    Electronic ISSN: 1522-1490
    Topics: Medicine
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 8511-8522 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 6477-6493 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In order to address the problem of three-body interactions in gas–surface scattering, we considered the collision of a He atom with the (0001) surface of graphite coated by a monolayer of Xe. To eliminate the uncertainties connected with errors in the two-body He–Xe interaction, we determined the latter by crossed-beam differential collision cross-section measurements performed at two energies (67.2 and 22.35 meV). These scattering data together with room-temperature bulk diffusion data are then fitted with a Hartree–Fock–dispersion–type function to yield an interaction potential that explains most of the properties of this system within the experimental errors and represents an improvement on previously published He–Xe potentials. Helium diffraction measurements are then carried out from the Xe overlayer and the dependence of the specular intensity from the angle of incidence is carefully determined. Further, a He–surface potential is constructed by adding together the following terms: (1) the He–Xe pairwise sum, (2) the long-range He–(0001)C interaction, (3) the three-body contribution generated by the Axilrod–Teller–Muto term, (4) the so-called surface-mediated three-body interaction He–Xe–(0001)C first considered by A. D. McLachlan [Mol. Phys. 7, 381 (1964)], and finally (5) a small correction which is meant to take into account the nonstationary nature of the surface. Using this potential, well-converged close-coupling scattering calculations are carried out, and their results compared with the data. In general, good agreement is obtained. The agreement can, however, be improved by (a) an increase of about 30% in the contribution of three-body forces, (b) the lowering of the He–graphite long-range attraction coefficient by about 15%, or (c) a reduction of the two-body interaction well depth of 1.6% (the experimental error) together with any combination of the factors under (a) and (b) reduced by an adequate amount. Elimination of the contribution of the graphite surface by studying Xe multilayers is hindered by the uncertainties in the "thermal correction'' [point (5) above] which, due to the multilayer increased "softness,'' becomes an appreciable source of uncertainty.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Clinical and experimental dermatology 28 (2003), S. 0 
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 5421-5426 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In order to address the problem of the optical reflectance of cermets beyond the quasistatic dipolar limit, we consider Monte Carlo multiple scattering simulations as well as a radiative transfer study. Slabs of alumina with inclusions of Cu, Au, Co and Cr are studied; reflectance coefficients are calculated as a function of wavelength, considering metal inclusion diameters up to 2.0 μm. We show that despite the incoherent diffuse propagation of light inside the slab, strong selectivity is achieved by particle diameters around 0.2 μm, even for very low metal concentrations. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 406-408 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present a simple experimental technique to determine size distributions of metallic polydispersions. The particles are first suspended in a viscous fluid-like glycerol and then their sedimentation is followed by measuring the effective dielectric constant in a cylindrical cell at a fixed frequency. Thereafter, an inversion procedure of the data, based on the Maxwell–Garnett effective medium theory and Stokes law, is used to directly obtain the size distribution. The technique is applied to three different stainless steel dispersions and compares very well with a traditional sizing method based in microphotography. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of muscle foods 12 (2001), S. 0 
    ISSN: 1745-4573
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Myofibrillar protein concentrate (MPC) was prepared from beef heart muscle (3 or 5% protein), and the sols were incubated with 0.5 unit/mL transglutaminase (TGase) at 5 and 15C for 0, 0.5, 2, 5, 10, and 15 h to determine the enzyme effect on MPC gelation. After each incubation time, dynamic gelling tests, differential scanning calorimetry, and electrophoresis (for sols and gels) were performed on all samples. MPC samples with TGase had greater (P〈0.05) gelling ability, regardless of preincubation (time and temperature), showing increases in storage modulus (G') from 600–900 Pa (control) to 1700–2000 (treated) at 70C. The results suggest that the gelation-enhancing effect by TGase was attributed to cross-linking of myosin, and that TGase can be used to improve the binding ability of beef heart myofibrillar proteins in restructured meats.
    Type of Medium: Electronic Resource
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