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1

Ultrafast Spectroscopy of Warm Dense Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Ultrafast Spectroscopy of Warm Dense Matter Print Ultrafast Spectroscopy of Warm Dense Matter Print Being neither solid, liquid, gas, nor plasma, warm dense matter (WDM) occupies a no man's land in the map of material phases. Its temperature can range between that of planetary cores (tens of thousands K) to that of stellar cores (hundreds of thousands K). Not only is it prevalent throughout the universe, it is relevant to inertial confinement fusion (ICF) and material performance under extreme conditions. However, because of its extreme temperatures and pressures, WDM tends to be drastically transient and thus difficult to study in the laboratory. Now, researchers have set up ultrafast x-ray absorption spectroscopy at the ALS to measure the electronic structure of WDMs, demonstrating that fast-changing electron temperatures of matter under extreme conditions can be determined with picosecond resolution.

2

Thomson Scattering from Warm Dense Matter W. R. Johnson  

E-Print Network (OSTI)

Thomson Scattering from Warm Dense Matter W. R. Johnson University of Notre Dame, Notre Dame in cell method. Email addresses: johnson@nd.edu (W. R. Johnson), nilsen1@llnl.gov (J. Nilsen), ktcheng

Johnson, Walter R.

3

Bypassing the malfunction junction in warm dense matter simulations  

E-Print Network (OSTI)

Simulation of warm dense matter requires computational methods that capture both quantum and classical behavior efficiently under high-temperature, high-density conditions. Currently, density functional theory molecular dynamics is used to model electrons and ions, but this method's computational cost skyrockets as temperatures and densities increase. We propose finite-temperature potential functional theory as an in-principle-exact alternative that suffers no such drawback. We derive an orbital-free free energy approximation through a coupling-constant formalism. Our density approximation and its associated free energy approximation demonstrate the method's accuracy and efficiency.

Cangi, Attila

2014-01-01T23:59:59.000Z

4

Forward Raman compression via photonic band gap in metals or warm dense matter  

SciTech Connect

The group velocity of a light pulse in photonic band gap material could considerably deviate from the speed of light in vacuum. A forward stoke and a pump pulse of different speeds would enable the Raman compression in metals or the warm dense matter. A small window of the parameter regime, where the compression is feasible via the forward Raman scattering, is identified.

Son, S. [18 Caleb Lane, Princeton, New Jersey 08540 (United States); Moon, Sung Joon [Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544 (United States)

2011-08-15T23:59:59.000Z

5

A pulsed power hydrodynamics approach to exploring properties of warm dense matter  

SciTech Connect

Pulsed Power Hydrodynamics, as an application of low-impedance, pulsed power, and high magnetic field technology developed over the last decade to study advanced hydrodynamic problems, instabilities, turbulence, and material properties, can potentially be applied to the study of the behavior and properties of warm dense matter (WDM) as well. Exploration of the properties, such as equation of state and conductivity, of warm dense matter is an emerging area of study focused on the behavior of matter at density near solid density (from 10% of solid density to a few times solid density) and modest temperatures ({approx}1-10 eV). Warm dense matter conditions can be achieved by laser or particle beam heating of very small quantities of matter on timescales short compared to the subsequent hydrodynamic expansion timescales (isochoric heating) and a vigorous community of researchers is applying these techniques using petawatt scale laser systems, but the microscopic size scale of the WDM produced in this way limits access to some physics phenomena. Pulsed power hydrodynamics techniques, either through high convergence liner compression of a large volume, modest density, low temperature plasma to densities approaching solid density or through the explosion and subsequent expansion of a conductor (wire) against a high pressure (density) gas background (isobaric expansion) techniques both offer the prospect for producing warm dense matter in macroscopic quantities. However, both techniques demand substantial energy, proper power conditioning and delivery, and an understanding of the hydrodynamic and instability processes that limit each technique. Similarly, liner compression of normal density material, perhaps using multiple reflected shocks can provide access to the challenging region above normal density -- again with the requirement of very large amounts of driving energy. In this paper we will provide an introduction to techniques that might be applied to explore this interesting new application of the energy-rich technology of pulse power and high magnetic fields.

Reinovsky, Robert Emil [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

6

Parametrization of light nuclei quasiparticle energy shifts and composition of warm and dense nuclear matter  

E-Print Network (OSTI)

Correlations and the formation of bound states (nuclei) are essential for the properties of nuclear matter in equilibrium as well as in nonequilibrium. In a quantum statistical approach, quasiparticle energies are obtained for the light elements that reflect the influence of the medium. We present analytical fits for the quasiparticle energy shifts of light nuclei that can be used in various applications. This is a prerequisite for the investigation of warm and dense matter that reproduces the nuclear statistical equilibrium and virial expansions in the low-density limit as well as relativistic mean field and Brueckner Hartree-Fock approaches near saturation density.

G. Röpke

2011-01-24T23:59:59.000Z

7

The ion potential in warm dense matter: wake effects due to streaming degenerate electrons  

E-Print Network (OSTI)

The effective dynamically screened potential of a classical ion in a stationary flowing quantum plasma at finite temperature is investigated. This is a key quantity for thermodynamics and transport of dense plasmas in the warm dense matter regime. To compute this potential a linear response description of the electrons via the Mermin dielectric function is utilized with electron-electron collisions taken into account via a relaxation time approximation. The ion potential strongly deviates from the static Yukawa potential exhibiting the familiar oscillatory structure with attractive minima (wake potential). This potential is analyzed in detail for high-density plasmas with values of the Brueckner parameter in the range $0.1 \\le r_s \\le 1$, for a broad range of plasma temperature and electron streaming velocity. It is shown that wake effects become weaker with increasing temperature of the electrons. Finally, we obtain the minimal electron streaming velocity for which attraction between ions occurs. This veloci...

Moldabekov, Zhandos; Bonitz, Michael; Ramazano, Tlekkabul

2014-01-01T23:59:59.000Z

8

Linear accelerator design study with direct plasma injection scheme for warm dense matter  

SciTech Connect

Warm Dense Matter (WDM) is a challenging science field, which is related to heavy ion inertial fusion and planetary science. It is difficult to expect the behavior because the state with high density and low temperature is completely different from ideal condition. The well-defined WDM generation is required to understand it. Moderate energy ion beams ({approx} MeV/u) slightly above Bragg peak is an advantageous method for WDM because of the uniform energy deposition. Direct Plasma Injection Scheme (DPIS) with a Interdigital H-mode (IH) accelerator has a potential for the beam parameter. We show feasible parameters of the IH accelerator for WDM. WDM physics is a challenging science and is strongly related to Heavy Ion Fusion science. WDM formation by Direct Plasma Injection Scheme (DPIS) with IH accelerator, which is a compact system, is proposed. Feasible parameters for IH accelerator are shown for WDM state. These represents that DPIS with IH accelerator can access a different parameter region of WDM.

Kondo, K.; Kanesue, T; Okamura, M.

2011-03-28T23:59:59.000Z

9

Electrical conductivity of warm dense tungsten  

Science Journals Connector (OSTI)

Abstract The electrical conductivity of warm dense tungsten plasma has been investigated successfully by a linear mixture rule considering various interactions of electrons with electrons, atoms, and ions. The plasma composition is calculated by the nonideal Saha equation. The interesting regime for tungsten plasma spans from weakly coupled and nondegenerate regime to strongly coupled and partial degenerate state. The electrical conductivity calculated is in reasonable agreement with the exploding wire experiments and other theoretical models. The present result demonstrates that the theoretical model is valid for the electrical conductivity of tungsten plasma in the warm dense matter regime.

Zhijian Fu; Lijun Jia; Xiaowei Sun; Qifeng Chen

2013-01-01T23:59:59.000Z

10

A multi-wavelength streak-optical-pyrometer for warm-dense matter experiments at NDCX-I and NDCX-II  

Science Journals Connector (OSTI)

Abstract We report on a multi-wavelength streak-optical-pyrometer (SOP) developed the for warm-dense-matter (WDM) experiments at the existing NDCX-I facility and the NDCX-II facility currently being commissioned at LBNL. The SOP served as the primary temperature diagnostic in the recent NDCX-I experiments, in which an intense K+ beam was used to heat different metal samples into WDM states. The SOP consists of a spectral grating (visible and near-infrared spectral range) and a fast, high-dynamic-range optical streak camera. The instrument is calibrated absolutely with a NIST-traceable tungsten ribbon lamp and can itself be considered as an absolutely calibrated, time-resolving spectrometer. The sample temperature is determined from fitting the recorded thermal spectrum into the Planck formula multiplied by a model of emissivity.

P.A. Ni; F.M. Bieniosek; E. Henestroza; S.M. Lidia

2014-01-01T23:59:59.000Z

11

Theoretical treatments of the bound-free contribution and experimental best practice in X-ray Thomson scattering from warm dense matter  

SciTech Connect

By comparison with high-resolution synchrotron x-ray experimental results, we assess several theoretical treatments for the bound-free (core-electron) contribution to x-ray Thomson scattering (i.e., also known as nonresonant inelastic x-ray scattering). We identify an often overlooked source of systematic error in the plane-wave form factor approximation (PWFFA) used in the inference of temperature, ionization state, and free electron density in some laser-driven compression studies of warm dense matter. This error is due to a direct violation of energy conservation in the PWFFA. We propose an improved practice for the bound-free term that will be particularly relevant for XRTS experiments performed with somewhat improved energy resolution at the National Ignition Facility or the Linac Coherent Light Source. Our results raise important questions about the accuracy of state variable determination in XRTS studies, given that the limited information content in low-resolution XRTS spectra does not strongly constrain the models of electronic structure being used to fit the spectra.

Mattern, Brian A.; Seidler, Gerald T. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States)

2013-02-15T23:59:59.000Z

12

Hot and Dense QCD Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

QCD Matter QCD Matter A Community White Paper on the Future of Relativistic Heavy-Ion Physics in the US Unraveling the Mysteries of the Strongly Interacting Quark-Gluon-Plasma Executive Summary This document presents the response of the US relativistic heavy-ion community to the request for comments by the NSAC Subcommittee, chaired by Robert Tribble, that is tasked to recommend optimizations to the US Nuclear Science Program over the next five years. The study of the properties of hot and dense QCD matter is one of the four main areas of nuclear physics research described in the 2007 NSAC Long Range Plan. The US nuclear physics community plays a leading role in this research area and has been instrumental in its most important discovery made over the past decade, namely that hot and dense QCD matter acts as a strongly interacting system with unique and previously unexpected

13

Suprathermal viscosity of dense matter  

SciTech Connect

Motivated by the existence of unstable modes of compact stars that eventually grow large, we study the bulk viscosity of dense matter, taking into account non-linear effects arising in the large amplitude regime, where the deviation {mu}{sub {Delta}} of the chemical potentials from chemical equilibrium fulfills {mu}{sub {Delta}} > or approx. T. We find that this supra-thermal bulk viscosity can provide a potential mechanism for saturating unstable modes in compact stars since the viscosity is strongly enhanced. Our study confirms previous results on strange quark matter and shows that the suprathermal enhancement is even stronger in the case of hadronic matter. We also comment on the competition of different weak channels and the presence of suprathermal effects in various color superconducting phases of dense quark matter.

Alford, Mark; Mahmoodifar, Simin; Schwenzer, Kai [Department of Physics, Washington University in St. Louis, Missouri, 63130 (United States)

2010-12-22T23:59:59.000Z

14

Phi Meson in Dense Matter  

E-Print Network (OSTI)

The effect of the kaon loop correction to the property of a phi meson in dense matter is studied in the vector dominance model. Using the density-dependent kaon effective mass determined from the linear chiral perturbation theory, we find...

Ko, Che Ming; Levai, P.; Qiu, X. J.; Li, C. T.

1992-01-01T23:59:59.000Z

15

WARM EXTENDED DENSE GAS AT THE HEART OF A COLD COLLAPSING DENSE CORE  

SciTech Connect

In order to investigate when and how the birth of a protostellar core occurs, we made survey observations of four well-studied dense cores in the Taurus molecular cloud using CO transitions in submillimeter bands. We report here the detection of unexpectedly warm (approx30-70 K), extended (radius of approx2400 AU), dense (a few times 10{sup 5} cm{sup -3}) gas at the heart of one of the dense cores, L1521F (MC27), within the cold dynamically collapsing components. We argue that the detected warm, extended, dense gas may originate from shock regions caused by collisions between the dynamically collapsing components and outflowing/rotating components within the dense core. We propose a new stage of star formation, 'warm-in-cold core stage (WICCS)', i.e., the cold collapsing envelope encases the warm extended dense gas at the center due to the formation of a protostellar core. WICCS would constitute a missing link in evolution between a cold quiescent starless core and a young protostar in class 0 stage that has a large-scale bipolar outflow.

Shinnaga, Hiroko; Phillips, Thomas G. [California Institute of Technology Submillimeter Observatory (CSO), 111 Nowelo Street, Hilo, HI 96720 (United States); Furuya, Ray S. [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720 (United States); Kitamura, Yoshimi, E-mail: shinnaga@submm.caltech.ed, E-mail: tgp@submm.caltech.ed, E-mail: rsf@subaru.naoj.or, E-mail: kitamura@isas.jaxa.j [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510 (Japan)

2009-12-01T23:59:59.000Z

16

Rho Meson in Dense Hadronic Matter  

E-Print Network (OSTI)

The spectral function of a rho meson that is at rest in dense hadronic matter and couples strongly to the pion is studied in the vector dominance model by including the effect of the delta-hole polarization on the pion. With the free rho-meson mass...

Asakawa, M.; Ko, Che Ming; Levai, P.; Qiu, X. J.

1992-01-01T23:59:59.000Z

17

Equation of state and optical properties of warm dense helium  

Science Journals Connector (OSTI)

We investigate the physical properties of warm dense helium under the conditions found in the atmospheres of cool white dwarfs using both a chemical model and ab initio simulations. A chemical model is developed for the low-ionization limit that includes the species He, He+, He2+, and electrons, and interactions between them. The ab initio calculations consist in quantum molecular dynamics (QMD) simulations. We use the generalized gradient approximation (GGA) to calculate the equation of state and the electrical and optical properties within the linear response theory. We further use an exact exchange hybrid (PBE0) density functional as well as the GW approximation to estimate the uncertainties on the electrical and optical properties resulting from the GGA approximation. While both the chemical model and the QMD simulations are in excellent agreement with the measured equation of state, a qualitative discrepancy exists with the measured conductivity.

P. M. Kowalski, S. Mazevet, D. Saumon, and M. Challacombe

2007-08-10T23:59:59.000Z

18

Fusion reactions in multicomponent dense matter  

Science Journals Connector (OSTI)

We analyze thermonuclear and pycnonuclear fusion reactions in dense matter containing atomic nuclei of different types. We extend a phenomenological expression for the reaction rate, proposed recently by Gasques et al. [Phys. Rev. C 72, 025806 (2005)] for the one-component plasma of nuclei, to the multicomponent plasma. The expression contains several fit parameters which we adjust to reproduce the best microscopic calculations available in the literature. Furthermore, we show that pycnonuclear burning is drastically affected by an (unknown) structure of the multicomponent matter (a regular lattice, a uniform mix, etc.). We apply the results to study nuclear burning in a 12C-16O mixture. In this context, we present new calculations of the astrophysical S factors for carbon-oxygen and oxygen-oxygen fusion reactions. We show that the presence of a C-O lattice can strongly suppress carbon ignition in white dwarf cores and neutron star crusts at densities ??3×109 g cm-3 and temperatures T?108 K.

D. G. Yakovlev; L. R. Gasques; A. V. Afanasjev; M. Beard; M. Wiescher

2006-09-27T23:59:59.000Z

19

Thermophysical properties of warm dense hydrogen using quantum molecular dynamics simulations  

Science Journals Connector (OSTI)

We study the thermophysical properties of warm dense hydrogen by using quantum molecular dynamics simulations. Results are presented for the pair distribution functions, the equation of state, and the Hugoniot curve. From the dynamic conductivity, we derive the dc electrical conductivity and the reflectivity. We compare with available experimental data and predictions of the chemical picture. In particular, we discuss the nonmetal-to-metal transition, which occurs at about 40 GPa in the dense fluid.

Bastian Holst, Ronald Redmer, and Michael P. Desjarlais

2008-05-09T23:59:59.000Z

20

Collaborative Research: Neutrinos & Nucleosynthesis in Hot Dense Matter  

SciTech Connect

It is now firmly established that neutrinos, which are copiously produced in the hot and dense core of the supernova, play a role in the supernova explosion mechanism and in the synthesis of heavy elements through a phenomena known as r-process nucleosynthesis. They are also detectable in terrestrial neutrino experiments, and serve as a probe of the extreme environment and complex dynamics encountered in the supernova. The major goal of the UW research activity relevant to this project was to calculate the neutrino interaction rates in hot and dense matter of relevance to core collapse supernova. These serve as key input physics in large scale computer simulations of the supernova dynamics and nucleosynthesis being pursued at national laboratories here in the United States and by other groups in Europe and Japan. Our calculations show that neutrino production and scattering rate are altered by the nuclear interactions and that these modifications have important implications for nucleosynthesis and terrestrial neutrino detection. The calculation of neutrino rates in dense matter are difficult because nucleons in the dense matter are strongly coupled. A neutrino interacts with several nucleons and the quantum interference between scattering off different nucleons depends on the nature of correlations between them in dense matter. To describe these correlations we used analytic methods based on mean field theory and hydrodynamics, and computational methods such as Quantum Monte Carlo. We found that due to nuclear effects neutrino production rates at relevant temperatures are enhanced, and that electron neutrinos are more easily absorbed than anti-electron neutrinos in dense matter. The latter, was shown to favor synthesis of heavy neutron-rich elements in the supernova.

Reddy, Sanjay

2013-09-06T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Constraining warm dark matter with cosmic shear power spectra  

SciTech Connect

We investigate potential constraints from cosmic shear on the dark matter particle mass, assuming all dark matter is made up of light thermal relic particles. Given the theoretical uncertainties involved in making cosmological predictions in such warm dark matter scenarios we use analytical fits to linear warm dark matter power spectra and compare (i) the halo model using a mass function evaluated from these linear power spectra and (ii) an analytical fit to the non-linear evolution of the linear power spectra. We optimistically ignore the competing effect of baryons for this work. We find approach (ii) to be conservative compared to approach (i). We evaluate cosmological constraints using these methods, marginalising over four other cosmological parameters. Using the more conservative method we find that a Euclid-like weak lensing survey together with constraints from the Planck cosmic microwave background mission primary anisotropies could achieve a lower limit on the particle mass of 2.5 keV.

Markovic, Katarina; Weller, Jochen [University Observatory Munich, Ludwig-Maximilian University, Scheinerstr. 1, 81679 Munich (Germany); Bridle, Sarah [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Slosar, Anže, E-mail: markovic@usm.lmu.de, E-mail: sarah.bridle@ucl.ac.uk, E-mail: anze@bnl.gov, E-mail: jochen.weller@usm.lmu.de [Brookhaven National Laboratory, Building 510A, Upton, NY 11973-5000 (United States)

2011-01-01T23:59:59.000Z

22

Demonstration of Successful X-ray Thomson Scattering Using Picosecond K-(alpha) X-ray Sources for the Characterization of Dense Heated Matter  

SciTech Connect

We discuss the first successful K-{alpha} x-ray Thomson scattering experiment from solid density plasmas for use as a diagnostic in determining the temperature, density, and ionization state of warm dense matter with picosecond resolution. The development of this source as a diagnostic and stringent requirements for successful K-{alpha} x-ray Thomson scattering are addressed. Data for the experimental techniques described in this paper [1] suggest the capability of single shot characterization of warm dense matter and the ability to use this scattering source at future Free Electron Lasers (FEL) where comparable scattering signal levels are predicted.

Kritcher, A; Neumayer, P; Lee, H J; Doeppner, T; Falcone, R; Glenzer, S; Morse, E C

2008-05-05T23:59:59.000Z

23

Intense Ion Beam for Warm Dense Matter Physics  

E-Print Network (OSTI)

limit the ?ow of plasma into the ?nal focus solenoid. Onceneutralizing plasma that enables us to focus to emittanceplasma is strongly coupled to the ?eld lines provided by the ? nal focus

Heimbucher, Lynn

2008-01-01T23:59:59.000Z

24

Intense Ion Beam for Warm Dense Matter Physics  

E-Print Network (OSTI)

break-even point in a fusion reactor, or ignition, where theoriginal report on fusion reactors (initially classi?ed). [Inertial Fusion Energy (IFE) reactor and power plant

Heimbucher, Lynn

2008-01-01T23:59:59.000Z

25

Cores and cusps in warm dark matter halos  

SciTech Connect

The apparent presence of large core radii in Low Surface Brightness galaxies has been claimed as evidence in favor of warm dark matter. Here we show that WDM halos do not have cores that are large fractions of the halo size: typically, r{sub core}/r{sub 200}?<10{sup ?3}. This suggests an astrophysical origin for the large cores observed in these galaxies, as has been argued by other authors.

Villaescusa-Navarro, Francisco [IFIC, Universidad de Valencia-CSIC, E-46071, Valencia (Spain); Dalal, Neal, E-mail: villa@ific.uv.es, E-mail: neal@cita.utoronto.ca [Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George St., Toronto, ON, M5S3H8 (Canada)

2011-03-01T23:59:59.000Z

26

Dynamical instabilities of warm npe matter: {delta} meson effects  

SciTech Connect

The effects of {delta} mesons on the dynamical instabilities of cold and warm nuclear and stellar matter at subsaturation densities are studied in the framework of relativistic mean-field hadron models (NL3, NL{rho}, and NL{rho}{delta}) with the inclusion of the electromagnetic field. The distillation effect and the spinodals for all the models considered are discussed. The crust-core transition density and pressure are obtained as a function of temperature for {beta}-equilibrium matter with and without neutrino trapping. An estimation of the size of the clusters formed in the nonhomogeneous phase and the corresponding growth rates are made. It is shown that cluster sizes increase with temperature. The effects of the {delta} meson on the instability region are larger for low temperatures, very asymmetric matter, and densities close to the spinodal surface. It increases the distillation effect above {approx}0.4{rho}{sub 0} and has the opposite effect below that density.

Pais, Helena; Santos, Alexandre; Providencia, Constanca [Centro de Fisica Computacional, Department of Physics, University of Coimbra, 3004-516 Coimbra (Portugal)

2009-10-15T23:59:59.000Z

27

The First Billion Years of a Warm Dark Matter Universe  

E-Print Network (OSTI)

We present results of cosmological N-body hydrodynamic chemistry simulations of primordial structure growth and evolution in a scenario with warm dark matter (WDM) having a mass of 3keV and compare with a model consisting of standard cold dark matter (CDM). We focus on the high-redshift universe ($z>6$), where the structure formation process should better reflect the primordial (linear) differences in terms of matter power spectrum. We find that early epochs are exceptional probes of the dark-matter nature. Non-linear CDM and WDM power spectra differ by up to 2 dex at early times and show spreads of factor of a few persisting in the whole first Gyr. Primordial WDM objects with masses $\\lesssim 10^8\\,\\rm M_\\odot$ are less abundant by $\\gtrsim 1\\,\\rm dex$, both in terms of dark matter and of baryon content. Runaway molecular cooling in primordial WDM mini-haloes results severely inhibited due to the damping of power at large $k$ modes. As a consequence, the cosmic (population III and II-I) star formation activi...

Maio, Umberto

2014-01-01T23:59:59.000Z

28

Top-Down Fragmentation of a Warm Dark Matter Filament  

E-Print Network (OSTI)

We present the first high-resolution n-body simulations of the fragmentation of dark matter filaments. Such fragmentation occurs in top-down scenarios of structure formation, when the dark matter is warm instead of cold. In a previous paper (Knebe et al. 2002, hereafter Paper I), we showed that WDM differs from the standard Cold Dark Matter (CDM) mainly in the formation history and large-scale distribution of low-mass haloes, which form later and tend to be more clustered in WDM than in CDM universes, tracing more closely the filamentary structures of the cosmic web. Therefore, we focus our computational effort in this paper on one particular filament extracted from a WDM cosmological simulation and compare in detail its evolution to that of the same CDM filament. We find that the mass distribution of the halos forming via fragmentation within the filament is broadly peaked around a Jeans mass of a few 10^9 Msun, corresponding to a gravitational instability of smooth regions with an overdensity contrast around 10 at these redshifts. Our results confirm that WDM filaments fragment and form gravitationally bound haloes in a top-down fashion, whereas CDM filaments are built bottom-up, thus demonstrating the impact of the nature of the dark matter on dwarf galaxy properties.

Alexander Knebe; Julien Devriendt; Brad Gibson; Joseph Silk

2003-07-28T23:59:59.000Z

29

Warmth Elevating the Depths: Shallower Voids with Warm Dark Matter  

E-Print Network (OSTI)

Warm dark matter (WDM) has been proposed as an alternative to cold dark matter (CDM), to resolve issues such as the apparent lack of satellites around the Milky Way. Even if WDM is not the answer to observational issues, it is essential to constrain the nature of the dark matter. The effect of WDM on haloes has been extensively studied, but the small-scale initial smoothing in WDM also affects the present-day cosmic web and voids. It suppresses the cosmic "sub-web" inside voids, and the formation of both void haloes and subvoids. In N-body simulations run with different assumed WDM masses, we identify voids with the zobov algorithm, and cosmic-web components with the origami algorithm. As dark-matter warmth increases, the initial-conditions smoothing increases, and the number of voids and subvoids is suppressed. Also, void density profiles change, their shapes become flatter inside the void radius, while edges of the voids remain unchanged. Also, filaments and walls become cleaner, as the sub-structures in be...

Yang, Lin F; Aragon-Calvo, Miguel A; Silk, Joseph

2014-01-01T23:59:59.000Z

30

Vortices and Other Topological Solitons in Dense Quark Matter  

E-Print Network (OSTI)

In this review, we discuss various properties of topological solitons in dense QCD matter, with a particular emphasis on the CFL phase exhibiting superfluidity and superconductivity, and their phenomenological implications in terms of the effective field theories such as the Ginzburg-Landau theory, the chiral Lagrangian, or the Bogoliubov--de Gennes equation. The most fundamental topological excitations are non-Abelian vortices, which are 1/3 quantized superfluid vortices and color magnetic flux tubes. They are created at a phase transition or a rotation such compact stars. The intervortex-interaction is repulsive and consequently a vortex lattice is formed. Bosonic and fermionic zero-energy modes are trapped in the vortex core and propagate along it as gapless excitations. The former consists of translational zero modes (a Kelvin mode) with a quadratic dispersion and CP(2) Nambu-Goldstone gapless modes with a linear dispersion, while the latter is the triplet Majorana fermion zero modes. The low-energy effec...

Eto, Minoru; Nitta, Muneto; Yasui, Shigehiro

2013-01-01T23:59:59.000Z

31

Vortices and Other Topological Solitons in Dense Quark Matter  

E-Print Network (OSTI)

In this review, we discuss various properties of topological solitons in dense QCD matter, with a particular emphasis on the CFL phase exhibiting superfluidity and superconductivity, and their phenomenological implications in terms of the effective field theories such as the Ginzburg-Landau theory, the chiral Lagrangian, or the Bogoliubov--de Gennes equation. The most fundamental topological excitations are non-Abelian vortices, which are 1/3 quantized superfluid vortices and color magnetic flux tubes. They are created at a phase transition or a rotation such compact stars. The intervortex-interaction is repulsive and consequently a vortex lattice is formed. Bosonic and fermionic zero-energy modes are trapped in the vortex core and propagate along it as gapless excitations. The former consists of translational zero modes (a Kelvin mode) with a quadratic dispersion and CP(2) Nambu-Goldstone gapless modes with a linear dispersion, while the latter is the triplet Majorana fermion zero modes. The low-energy effective theory of the bosonic zero modes is a non-relativistic free complex scalar field and a CP(2) model in 1+1 dimensions. The effects of strange quark mass, electromagnetic interactions and non-perturbative quantum corrections are taken into account. Colorful boojums at the CFL interface, quantum color magnetic monopole confined by vortices, which supports the notion of quark-hadron duality, and Yang-Mills instantons inside a vortex as lumps are discussed. The interactions between a vortex and quasi-particles such as phonons, gluons, mesons, and photons are studied. A vortex lattice is shown to behave as a cosmic polarizer. Non-Abelian vortices are shown to behave as a novel kind of non-Abelian anyons. For the chiral symmetry breaking, we discuss fractional and integer axial domain walls, Abelian and non-Abelian axial vortices, axial wall-vortex composites, and Skyrmions.

Minoru Eto; Yuji Hirono; Muneto Nitta; Shigehiro Yasui

2013-08-07T23:59:59.000Z

32

The Energy Cascade from Warm Dark Matter Decays  

E-Print Network (OSTI)

We use a set of Monte Carlo simulations to follow the cascade produced by a primary electron of energy E_in in the intergalactic medium. We choose E_in=3-10 keV as expected from the decay of one of the most popular Warm Dark Matter (WDM) candidates, sterile neutrinos. Our simulation takes into account processes previously neglected such as free-free interactions with ions and recombinations and uses the best available cross sections for collisional ionizations and excitations with H and He and for electron-electron collisions. We precisely derive the fraction of the primary electron energy that heats the gas, ionizes atoms and produces line and continuum photons as a function of the ionization fraction. Handy fitting formulae for all the above energy depositions are provided. By keeping track of the individual photons we can distinguish between photons in the Ly-alpha resonance and those with energy E gas. This separation is important because a Ly-alpha background can heat or cool the gas depending on the nature of the photons, and can have effects on the 21 cm radiation emitted by neutral H, which will probably become detectable at z > 6 in the near future by the next generation radio interferometers.

M. Valdés; A. Ferrara

2008-03-04T23:59:59.000Z

33

Color Glass Condensates in dense quark matter and quantum Hall states of gluons  

E-Print Network (OSTI)

We apply the effective theory of color glass condensate to the analysis of gluon states in dense quark matter, in which the saturation region of gluons is also present. We find that in the region two point function of gluons shows algebraic long range order. The order is completely the same as the one gluons show in the dense quark matter, which form quantum Hall states. The order leads to the vanishing of massless gluon pole. We also find that the saturation region of gluons extends from small $x$ to even large $x\\lesssim 1$ in much dense quark matter. We point out a universality that the color glass condensate is a property of hadrons at high energy and of quark matter at high baryon density.

Aiichi Iwazaki

2006-04-26T23:59:59.000Z

34

Vortices and other topological solitons in dense quark matter  

Science Journals Connector (OSTI)

......research-article Invited Papers Nuclear Physics B35 D30 D41...Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization...the structure of the vacuum. QCD matter exhibits...density region of nuclear matter, a spin triplet......

Minoru Eto; Yuji Hirono; Muneto Nitta; Shigehiro Yasui

2014-01-01T23:59:59.000Z

35

Photon Production from Charge-Asymmetric Hot and Dense Matter  

E-Print Network (OSTI)

A new channel of direct photon production from a quark gluon plasma (QGP) is explored. This process appears at Next-to-Leading-Order in the presence of a charge asymmetry in the heated matter and may be effectively described as the bremsstrahlung of a real photon from a thermal gluon. The photon production from this new mechanism is calculated in the effective theory of QCD at high temperature. The results show that the photon production rate may not as big as the annihilation and Compton scattering at low baryon density, but could become important in baryon-rich matter.

Guang-You Qin; Abhijit Majumder; Charles Gale

2007-03-29T23:59:59.000Z

36

Quantum statistical calculation of cluster abundances in hot dense matter  

E-Print Network (OSTI)

The cluster abundances are calculated from a quantum statistical approach taking into account in-medium corrections. For arbitrary cluster size the self-energy and Pauli blocking shifts are considered. Exploratory calculations are performed for symmetric matter at temperature $T=5$ MeV and baryon density $\\varrho=0.0156$ fm$^{-3}$ to be compared with the solar element distribution. It is shown that the abundances of weakly bound nuclei with mass number $4

Gerd Ropke

2014-07-01T23:59:59.000Z

37

Kaon Production from Hot and Dense Matter Formed in Heavy-Ion Collisions  

E-Print Network (OSTI)

are then extended to determine kaon production in hot, dense nuclear matter by taking into account the decreasing hadron masses as a result of the restoration of chiral symmetry and the condensation of kaons. We find that the cross sections for kaon production from...

Brown, G. E.; Ko, Che Ming; Wu, Z. G.; Xia, L. H.

1991-01-01T23:59:59.000Z

38

Electrical Conductivity of Dense Quark Matter with Fluctuations and Magnetic Field Included  

E-Print Network (OSTI)

We investigate the electrical conductivity(EC) of dense quark matter in the vicinity of the phase transition line. We show that: (i) At high density the Drude EC does not depend on the magnetic field up to $eB \\sim 10^{19} \\ G$. (ii) In the precritical region the fluctuation EC (paraconductivity) dominates over the Drude one.

B. O. Kerbikov; M. A. Andreichikov

2014-10-13T23:59:59.000Z

39

Laser wakefield generated X-ray probe for femtosecond time-resolved measurements of ionization states of warm dense aluminum  

SciTech Connect

We have developed a laser wakefield generated X-ray probe to directly measure the temporal evolution of the ionization states in warm dense aluminum by means of absorption spectroscopy. As a promising alternative to the free electron excited X-ray sources, Betatron X-ray radiation, with femtosecond pulse duration, provides a new technique to diagnose femtosecond to picosecond transitions in the atomic structure. The X-ray probe system consists of an adjustable Kirkpatrick-Baez (KB) microscope for focusing the Betatron emission to a small probe spot on the sample being measured, and a flat Potassium Acid Phthalate Bragg crystal spectrometer to measure the transmitted X-ray spectrum in the region of the aluminum K-edge absorption lines. An X-ray focal spot size of around 50 ?m was achieved after reflection from the platinum-coated 10-cm-long KB microscope mirrors. Shot to shot positioning stability of the Betatron radiation was measured resulting in an rms shot to shot variation in spatial pointing on the sample of 16 ?m. The entire probe setup had a spectral resolution of ?1.5 eV, a detection bandwidth of ?24 eV, and an overall photon throughput efficiency of the order of 10{sup ?5}. Approximately 10 photons were detected by the X-ray CCD per laser shot within the spectrally resolved detection band. Thus, it is expected that hundreds of shots will be required per absorption spectrum to clearly observe the K-shell absorption features expected from the ionization states of the warm dense aluminum.

Mo, M. Z.; Chen, Z.; Tsui, Y. Y.; Fedosejevs, R. [Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 2V4 (Canada)] [Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 2V4 (Canada); Fourmaux, S.; Saraf, A.; Otani, K.; Kieffer, J. C. [INRS-EMT, Université du Québec, 1650 Lionel Boulet, Varennes, Québec J3X 1S2 (Canada)] [INRS-EMT, Université du Québec, 1650 Lionel Boulet, Varennes, Québec J3X 1S2 (Canada); Ng, A. [Department of Physics and Astronomy, University of British Columbia, British Columbia V6T 1Z1 (Canada)] [Department of Physics and Astronomy, University of British Columbia, British Columbia V6T 1Z1 (Canada)

2013-12-15T23:59:59.000Z

40

Properties of dense, asymmetric nuclear matter in Dirac-Brueckner-Hartree-Fock approach  

E-Print Network (OSTI)

Within the Dirac-Brueckner-Hartree-Fock approach, using the Bonn potentials, we investigate the properties of dense, asymmetric nuclear matter and apply it to neutron stars. In the actual calculations of the nucleon self-energies and the energy density of matter, we study in detail the validity of an angle-averaged approximation and an averaging of the total momentum squared of interacting two-nucleons in nuclear matter. For practical use, we provide convenient parametrizations for the equation of state for symmetric nuclear matter and pure neutron matter. We also parametrize the nucleon self-energies in terms of polynomials of nucleon momenta. Those parametrizations can accurately reproduce the numerical results up to high densities.

Tetsuya Katayama; Koichi Saito

2013-07-08T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Properties of dense, asymmetric nuclear matter in Dirac-Brueckner-Hartree-Fock approach  

E-Print Network (OSTI)

Within the Dirac-Brueckner-Hartree-Fock approach, using the Bonn potentials, we investigate the properties of dense, asymmetric nuclear matter and apply it to neutron stars. In the actual calculations of the nucleon self-energies and the energy density of matter, we study in detail the validity of an angle-averaged approximation and an averaging of the total momentum squared of interacting two-nucleons in nuclear matter. For practical use, we provide convenient parametrizations for the equation of state for symmetric nuclear matter and pure neutron matter. We also parametrize the nucleon self-energies in terms of polynomials of nucleon momenta. Those parametrizations can accurately reproduce the numerical results up to high densities.

Katayama, Tetsuya

2013-01-01T23:59:59.000Z

42

Light nuclei quasiparticle energy shift in hot and dense nuclear matter  

E-Print Network (OSTI)

Nuclei in dense matter are influenced by the medium. In the cluster mean field approximation, an effective Schr\\"odinger equation for the $A$-particle cluster is obtained accounting for the effects of the correlated medium such as self-energy, Pauli blocking and Bose enhancement. Similar to the single-baryon states (free neutrons and protons), the light elements ($2 \\le A \\le 4$, internal quantum state $\

G. Röpke

2008-10-25T23:59:59.000Z

43

Strong Upper Limits on Sterile Neutrino Warm Dark Matter  

SciTech Connect

Sterile neutrinos are attractive dark matter candidates. Their parameter space of mass and mixing angle has not yet been fully tested despite intensive efforts that exploit their gravitational clustering properties and radiative decays. We use the limits on gamma-ray line emission from the Galactic center region obtained with the SPI spectrometer on the INTEGRAL satellite to set new constraints, which improve on the earlier bounds on mixing by more than 2 orders of magnitude, and thus strongly restrict a wide and interesting range of models.

Yueksel, Hasan [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210 (United States); Beacom, John F. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210 (United States); Department of Astronomy, Ohio State University, Columbus, Ohio 43210 (United States); Watson, Casey R. [Department of Physics and Astronomy, Millikin University, Decatur, Illinois 62522 (United States)

2008-09-19T23:59:59.000Z

44

Plasma cutoff and enhancement of radiative transitions in dense stellar matter P. S. Shternin* and D. G. Yakovlev  

E-Print Network (OSTI)

Plasma cutoff and enhancement of radiative transitions in dense stellar matter P. S. Shternin-Petersburg 194021, Russia (Received 7 March 2009; published 5 June 2009) We study plasma effects on radiative transitions (e.g., decay of excited states of atoms or atomic nuclei) in a dense plasma at the transition

45

Diquarks in the color-flavor locked phase of dense quark matter  

Science Journals Connector (OSTI)

Diquark excitations of dense quark matter are considered in the framework of the Nambu–Jona-Lasinio model with three types of massless quarks in the presence of a quark number chemical potential ?. We investigate the effective action of meson and diquark fields at sufficiently high values of ?, where the color-flavor locked (CFL) phase is realized, and prove the existence of NG bosons in the sector of pseudoscalar diquarks. In the sector of scalar diquarks an additional NG boson is found, corresponding to the spontaneous breaking of the U(1)B baryon symmetry in the CFL phase. Finally, the existence of massive scalar and pseudoscalar diquark excitations is demonstrated.

D. Ebert and K. G. Klimenko

2007-02-07T23:59:59.000Z

46

NDCX-II, A New Induction Linear Accelerator for Warm Dense Matter Research  

E-Print Network (OSTI)

E. Gilson, R. Davidson, PPPL, Princeton, NJ 08543, U.S.A.Plasma Physics Laboratory (PPPL), is currently constructing

Leitner, M.

2009-01-01T23:59:59.000Z

47

Solenoid transport of a heavy ion beam for warm dense matter studies and inertial confinement fusion  

E-Print Network (OSTI)

1987. [20] CRC Handbook of Chemistry and Physics. 1964. [21]23] CRC Handbook of Chemistry and Physics, 86th edition.

Armijo, Julien

2006-01-01T23:59:59.000Z

48

Progress in Beam Focusing and Compression for Target Heating and Warm Dense Matter Experiments  

E-Print Network (OSTI)

plasma and the plasma in the final focus solenoid, whichplasma forms a thin column of diameter ~5 mm along the solenoid axis when the Final Focus

Seidl, Peter

2009-01-01T23:59:59.000Z

49

Helium gap in the warm dense matter regime and experimental reflectivity measurements  

Science Journals Connector (OSTI)

We revisit the reflectivity measurements of Celliers et al. [P. M. Celliers, P. Loubeyre, J. H. Eggert, S. Brygoo, R. S. McWilliams, D. G. Hicks, T. R. Boehly, R. Jeanloz, and G. W. Collins, Phys. Rev. Lett. 104, 184503 (2010)] for He at high density by taking into account a temperature dependence, based on existing ab initio calculations, in the functional form of the gap energy inferred from these data. We show that, when accounting for such a temperature dependence, the predicted behavior of the gap energy at high density differs significantly from the one suggested by Celliers et al. and that He is predicted to become metallic (gap closure) at much higher densities, around 10 g/cm3. High-pressure experiments over a larger temperature and density range are mandatory to correctly determine this gap behavior, a problem of crucial importance for astrophysical applications.

F. Soubiran, S. Mazevet, C. Winisdoerffer, and G. Chabrier

2012-09-04T23:59:59.000Z

50

Omega meson as a chronometer and thermometer in hot-dense hadronic matter  

E-Print Network (OSTI)

Changes in the properties of the vector mesons in hot and dense hadronic matter, as produced in heavy ion collisions, lead to the intriguing possibility of the opening of the decay channel $\\omega \\ra \\rho \\pi$, for the omega meson, which is impossible in free space. This along with the channel $\\omega \\pi \\ra \\pi \\pi$ would result in a decrease in its effective life-time enabling it to decay within the hot zone and act as a chronometer in contradiction to the commonly held opinion and would have implications vis a vis determination of the size of the region through pion interferometry. A new peak and a radically altered shape of the low invariant mass dilepton spectra appears due to different shift in the masses of $\\rho$ and $\\omega$ mesons. The Walecka model is used for the underlying calculation for the sake of illustration.

Pradip Roy; Sourav Sarkar; Jan-e Alam; Binayak Dutt-Roy; Bikash Sinha

1999-05-12T23:59:59.000Z

51

Dynamical instabilities of warm n pe matter: the delta meson effects  

SciTech Connect

The effects of the delta meson on the dynamical instabilities of cold and warm nuclear and stellar matter at subsaturation densities are studied in the framework of relativistic mean-field hadron models (NL3, NL{sub r}ho and NL{sub r}ho{sub d}elta) with the inclusion of the electromagnetic field. The crust-core transition density and pressure are obtained as a function of temperature of beta-equilibrium matter with and without neutrino trapping. The distillation effect is discussed. For beta-equilibrium matter with trapped neutrinos the pasta phase disappears for T>13.2 MeV (NL{sub r}ho and NL{sub r}ho{sub d}elta) or T>11.6 MeV (NL3). For neutrino free matter the non-homogeneous phase does not exist for T>3 MeV. The delta meson has a larger effect in neutron rich matter, larger densities and smaller temperatures. It reduces the extension of the spinodal. The distillation effect is stronger for larger densities and smaller temperatures. The delta meson increases the distillation effect, for larger densities. NL3 predicts larger clusters compared with the other two parametrizations, and a smaller extension of the non-homogeneous phase for all temperatures. At the transition densities, the NL{sub r}ho and NL{sub r}ho{sub d}elta predict clusters with the double of the size as compared with an intermediate density. Constraints at finite temperature on the EOS are required.

Pais, Helena; Santos, Alexandre; Providencia, Constanca [Centro de Fisica Computacional-Department of Physics, University of Coimbra-P-3004-516-Coimbra-Portugal (Portugal)

2010-04-26T23:59:59.000Z

52

Direct Detection of Warm Dark Matter in the X-Ray  

Science Journals Connector (OSTI)

We point out a serendipitous link between warm dark matter (WDM) models for structure formation on the one hand and the high-sensitivity energy range (1-10 keV) for X-ray photon detection on the Chandra and XMM-Newton observatories on the other. This fortuitous match may provide either a direct detection of the dark matter or the exclusion of many candidates. We estimate expected X-ray fluxes from field galaxies and clusters of galaxies if the dark matter halos of these objects are composed of WDM candidate particles with rest masses in the structure formation-preferred range (~1 to ~20 keV) and with small radiative decay branches. Existing observations lead us to conclude that for singlet neutrinos (possessing a very small mixing with active neutrinos) to be a viable WDM candidate they must have rest masses 5 keV in the zero lepton number production mode. Future deeper observations may detect or exclude the entire parameter range for the zero lepton number case, perhaps restricting the viability of singlet neutrino WDM models to those where singlet production is driven by a significant lepton number. The Constellation X project has the capability to detect/exclude singlet neutrino WDM for lepton number values up to 10% of the photon number. We also consider diffuse X-ray background constraints on these scenarios. These same X-ray observations additionally may constrain parameters of active neutrino and gravitino WDM candidates.

Kevork Abazajian; George M. Fuller; Wallace H. Tucker

2001-01-01T23:59:59.000Z

53

Direct x-ray constraints on sterile neutrino warm dark matter  

SciTech Connect

Warm dark matter might more easily account for small scale clustering measurements than the heavier particles typically invoked in {lambda} cold dark matter ({lambda}CDM) cosmologies. In this paper, we consider a {lambda}WDM cosmology in which sterile neutrinos {nu}{sub s}, with a mass m{sub s} of roughly 1-100 keV, are the dark matter. We use the diffuse x-ray spectrum (total minus resolved point source emission) of the Andromeda galaxy to constrain the rate of sterile neutrino radiative decay: {nu}{sub s}{yields}{nu}{sub e,{mu}}{sub ,{tau}}+{gamma}. Our findings demand that m{sub s}<3.5 keV (95% C.L.) which is a significant improvement over the previous (95% C.L.) limits inferred from the x-ray emission of nearby clusters, m{sub s}<8.2 keV (Virgo A) and m{sub s}<6.3 keV (Virgo A+Coma)

Watson, Casey R.; Yueksel, Hasan [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Beacom, John F.; Walker, Terry P. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Department of Astronomy, Ohio State University, Columbus, Ohio 43210 (United States)

2006-08-01T23:59:59.000Z

54

Direct Detection of Warm Dark Matter in the X-ray  

E-Print Network (OSTI)

We point out a serendipitous link between warm dark matter (WDM) models for structure formation on the one hand and the high sensitivity energy range (1-10 keV) for x-ray photon detection on the Chandra and XMM-Newton observatories on the other. This fortuitous match may provide either a direct detection of the dark matter or exclusion of many candidates. We estimate expected x-ray fluxes from field galaxies and clusters of galaxies if the dark matter halos of these objects are composed of WDM candidate particles with rest masses in the structure formation-preferred range (~1 keV to ~20 keV) and with small radiative decay branches. Existing observations lead us to conclude that for singlet neutrinos (possessing a very small mixing with active neutrinos) to be a viable WDM candidate they must have rest masses < 5 keV in the zero lepton number production mode. Future deeper observations may detect or exclude the entire parameter range for the zero lepton number case, perhaps restricting the viability of singlet neutrino WDM models to those where singlet production is driven by a significant lepton number. The Constellation X project has the capability to detect/exclude singlet neutrino WDM for lepton number values up to 10% of the photon number. We also consider diffuse x-ray background constraints on these scenarios. These same x-ray observations additionally may constrain parameters of active neutrino and gravitino WDM candidates.

K. Abazajian; G. M. Fuller; W. H. Tucker

2001-05-31T23:59:59.000Z

55

Constraints on warm dark matter from weak lensing in anomalous quadruple lenses  

E-Print Network (OSTI)

We investigate the weak lensing effect by line-of-sight structures with a surface mass density of solar mass/arcsec^2 in QSO-galaxy quadruple lens systems. Using high-resolution N-body simulations in warm dark matter (WDM) models and observed four quadruple lenses that show anomalies in the flux ratios, we obtain constraints on the mass of thermal WDM, m_WDM>= 1.3keV(95%CL), which is consistent with those from Lyman-$\\alpha$ forests and the number counts of high-redshift galaxies at z>4. Our results show that WDM with a free-streaming comoving wavenumber k_{fs} <= 27 h/Mpc is disfavored as the major component of cosmological density at redshifts 0.5 <~ z <~ 4.

Kaiki Taro Inoue; Ryuichi Takahashi; Tomo Takahashi; Tomoaki Ishiyama

2014-09-04T23:59:59.000Z

56

DISCOVERY OF 'WARM DUST' GALAXIES IN CLUSTERS AT z {approx} 0.3: EVIDENCE FOR STRIPPING OF COOL DUST IN THE DENSE ENVIRONMENT?  

SciTech Connect

Using far-infrared imaging from the 'Herschel Lensing Survey', we derive dust properties of spectroscopically confirmed cluster member galaxies within two massive systems at z {approx} 0.3: the merging Bullet Cluster and the more relaxed MS2137.3-2353. Most star-forming cluster sources ({approx}90%) have characteristic dust temperatures similar to local field galaxies of comparable infrared (IR) luminosity (T{sub dust} {approx} 30 K). Several sub-luminous infrared galaxy (LIRG; L{sub IR} < 10{sup 11} L{sub Sun }) Bullet Cluster members are much warmer (T{sub dust} > 37 K) with far-infrared spectral energy distribution (SED) shapes resembling LIRG-type local templates. X-ray and mid-infrared data suggest that obscured active galactic nuclei do not contribute significantly to the infrared flux of these 'warm dust' galaxies. Sources of comparable IR luminosity and dust temperature are not observed in the relaxed cluster MS2137, although the significance is too low to speculate on an origin involving recent cluster merging. 'Warm dust' galaxies are, however, statistically rarer in field samples (>3{sigma}), indicating that the responsible mechanism may relate to the dense environment. The spatial distribution of these sources is similar to the whole far-infrared bright population, i.e., preferentially located in the cluster periphery, although the galaxy hosts tend toward lower stellar masses (M{sub *} < 10{sup 10} M{sub Sun }). We propose dust stripping and heating processes which could be responsible for the unusually warm characteristic dust temperatures. A normal star-forming galaxy would need 30%-50% of its dust removed (preferentially stripped from the outer reaches, where dust is typically cooler) to recover an SED similar to a 'warm dust' galaxy. These progenitors would not require a higher IR luminosity or dust mass than the currently observed normal star-forming population.

Rawle, T. D.; Rex, M.; Egami, E.; Walth, G.; Pereira, M. J. [Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721 (United States); Chung, S. M.; Gonzalez, A. H. [Department of Astronomy, University of Florida, Gainesville, FL 32611-2055 (United States); Perez-Gonzalez, P. G. [Departamento de Astrofisica, Facultad de CC. Fisicas,Universidad Complutense de Madrid, E-28040 Madrid (Spain); Smail, I. [Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE (United Kingdom); Altieri, B.; Valtchanov, I. [Herschel Science Centre, ESAC, ESA, P.O. Box 78, Villanueva de la Canada, E-28691 Madrid (Spain); Appleton, P.; Fadda, D. [IPAC, California Institute of Technology, Pasadena, CA 91125 (United States); Alba, A. Berciano [ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo (Netherlands); Blain, A. W. [Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH (United Kingdom); Dessauges-Zavadsky, M. [Observatoire de Geneve, Universite de Geneve, 51 Ch. des Maillettes, CH-1290 Sauverny (Switzerland); Van der Werf, P. P. [Sterrewacht Leiden, Leiden University, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Zemcov, M., E-mail: trawle@as.arizona.edu [Department of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)

2012-09-10T23:59:59.000Z

57

Simulations of galaxies formed in warm dark matter halos of masses at the filtering scale  

E-Print Network (OSTI)

We present zoom-in N-body + Hydrodynamic simulations of dwarf central galaxies formed in Warm Dark Matter (WDM) halos with masses at present-day of $2-4\\times 10^{10}$ \\msun. Two different cases are considered, the first one when halo masses are close to the corresponding half-mode filtering scale \\Mhm\\ (\\mwdm =1.2 keV), and the second when they are 20 to 30 times the corresponding \\Mhm\\ (\\mwdm = 3.0 keV). The WDM simulations are compared with the respective Cold Dark Matter (CDM) simulations. The dwarfs formed in halos of masses (20-30)\\Mhm have roughly similar properties and evolution than their CDM counterparts; on the contrary, those formed in halos of masses around \\Mhm, are systematically different from their CDM counterparts. As compared to the CDM dwarfs, they assemble the dark and stellar masses later, having mass-weighted stellar ages 1.4--4.8 Gyr younger; their circular velocity profiles are shallower, with maximal velocities 20--60% lower; their stellar distributions are much less centrally concen...

Colin, Pedro; Gonzalez-Samaniego, Alejandro; Velazquez, Hector

2014-01-01T23:59:59.000Z

58

Proceedings of RIKEN BNL Research Center Workshop: P- and CP-odd Effects in Hot and Dense Matter  

SciTech Connect

This volume contains the proceedings of the RBRC/CATHIE workshop on 'P- and CP-odd Effects in Hot and Dense Matter' held at the RIKEN-BNL Research Center on April 26-30, 2010. The workshop was triggered by the experimental observation of charge correlations in heavy ion collisions at RHIC, which were predicted to occur due to local parity violation (P- and CP-odd fluctuations) in hot and dense QCD matter. This experimental result excited a significant interest in the broad physics community, inspired a few alternative interpretations, and emphasized the need for a deeper understanding of the role of topology in QCD vacuum and in hot and dense quark-gluon matter. Topological effects in QCD are also closely related to a number of intriguing problems in condensed matter physics, cosmology and astrophysics. We therefore felt that a broad cross-disciplinary discussion of topological P- and CP-odd effects in various kinds of matter was urgently needed. Such a discussion became the subject of the workshop. Specific topics discussed at the workshop include the following: (1) The current experimental results on charge asymmetries at RHIC and the physical interpretations of the data; (2) Quantitative characterization of topological effects in QCD matter including both analytical (perturbative and non-perturbative using gauge/gravity duality) and numerical (lattice-QCD) calculations; (3) Topological effects in cosmology of the Early Universe (including baryogenesis and dark energy); (4) Topological effects in condensed matter physics (including graphene and superfiuids); and (5) Directions for the future experimental studies of P- and CP-odd effects at RHIC and elsewhere. We feel that the talks and intense discussions during the workshop were extremely useful, and resulted in new ideas in both theory and experiment. We hope that the workshop has contributed to the progress in understanding the role of topology in QCD and related fields. We thank all the speakers and participants, and express our gratitude to the event coordinator Pam Esposito for her hard work.

Deshpande, A.; Fukushima, K.; Kharzeev, D.; Warringa, H.; Voloshin, S.

2010-04-26T23:59:59.000Z

59

Dispersion relation of the $?$ meson in hot/dense nuclear matter  

E-Print Network (OSTI)

The dispersion relation of $\\rho$ meson in both timelike and spacelike regimes in hot and dense nuclear medium is analyzed and compared with $\\sigma $ meson based on the quantum hadrodynamics model. The pole and screening masses of $\\rho $ and $\\sigma$ are discussed. The behavior of screening mass of $\\rho$ is different from that of $\\sigma$ due to different Dirac- and Fermi-sea contributions at finite temperature and density.

Ji-Sheng Chen; Jia-Rong Li; Peng-Fei Zhuang

2002-09-16T23:59:59.000Z

60

Quantum Kinetics of Deconfinement Transitions in Dense Nuclear Matter: Dissipation Effects at Low Temperatures  

Science Journals Connector (OSTI)

......nuclear matter of temperature ;S 0.1 MeV, as found in a neutron star core, if it occurs dynamically, is likely to pro- ceed via quantum nucleation, although no definite conclusion can be drawn in the absence of the exact information about ex and......

Kei Iida

1997-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Laser-driven acceleration of a dense matter up to 'thermonuclear' velocities  

Science Journals Connector (OSTI)

The results of theoretical studies and numerical simulations of laser-driven acceleration of a flat foil up to ultrahigh velocity of the order of 1000?km?s?1, which corresponds to the achievement of thermonuclear temperatures due to kinetic energy transition into thermal energy at an inelastic impact, are reported. The behavior of a foil accelerated to such high velocities, in particular, the distribution of foil density, which defines thermonuclear reaction intensity, has been studied. The calculation results are compared with the results of the experiments performed on the Gekko/HIPER laser, where a laser-driven projectile achieved record-breaking velocity. The laser pulse and foil parameters responsible for acceleration of the projectile up to 'thermonuclear' velocities in a dense state have been determined.

S Yu Gus'kov; H Azechi; N N Demchenko; V V Demchenko; I Ya Doskoch; M Murakami; H Nagatomo; V B Rozanov; S Sakaiya; R V Stepanov; N V Zmitrenko

2007-01-01T23:59:59.000Z

62

Anti-strange meson-baryon interaction in hot and dense nuclear matter  

E-Print Network (OSTI)

We present a study of in-medium cross sections and (off-shell) transition rates for the most relevant binary reactions for strange pseudoscalar meson production close to threshold in heavy-ion collisions at FAIR energies. Our results rely on a chiral unitary approach in coupled channels which incorporates the $s$- and $p$-waves of the kaon-nucleon interaction. The formalism, which is modified in the hot and dense medium to account for Pauli blocking effects, mean-field binding on baryons, and pion and kaon self-energies, has been improved to implement full unitarization and self-consistency for both the $s$- and $p$-wave interactions at finite temperature and density. This gives access to in-medium amplitudes in several elastic and inelastic coupled channels with strangeness content $S=-1$. The obtained total cross sections mostly reflect the fate of the $\\Lambda(1405)$ resonance, which melts in the nuclear environment, whereas the off-shell transition probabilities are also sensitive to the in-medium properties of the hyperons excited in the $p$-wave amplitudes [$\\Lambda$, $\\Sigma$ and $\\Sigma^*(1385)$]. The single-particle potentials of these hyperons at finite momentum, density and temperature are also discussed in connection with the pertinent scattering amplitudes. Our results are the basis for future implementations in microscopic transport approaches accounting for off-shell dynamics of strangeness production in nucleus-nucleus collisions.

Daniel Cabrera; Laura Tolos; Jörg Aichelin; Elena Bratkovskaya

2014-11-14T23:59:59.000Z

63

Anti-strange meson-baryon interaction in hot and dense nuclear matter  

E-Print Network (OSTI)

We present a study of in-medium cross sections and (off-shell) transition rates for the most relevant binary reactions for strange pseudoscalar meson production close to threshold in heavy-ion collisions at FAIR energies. Our results rely on a chiral unitary approach in coupled channels which incorporates the $s$- and $p$-waves of the kaon-nucleon interaction. The formalism, which is modified in the hot and dense medium to account for Pauli blocking effects, mean-field binding on baryons, and pion and kaon self-energies, has been improved to implement full unitarization and self-consistency for both the $s$- and $p$-wave interactions at finite temperature and density. This gives access to in-medium amplitudes in several elastic and inelastic coupled channels with strangeness content $S=-1$. The obtained total cross sections mostly reflect the fate of the $\\Lambda(1405)$ resonance, which melts in the nuclear environment, whereas the off-shell transition probabilities are also sensitive to the in-medium propert...

Cabrera, Daniel; Aichelin, Jörg; Bratkovskaya, Elena

2014-01-01T23:59:59.000Z

64

Average atom transport properties for pure and mixed species in the hot and warm dense matter regimes  

SciTech Connect

The Kubo-Greenwood formulation for calculation of optical conductivities with an average atom model is extended to calculate thermal conductivities. The method is applied to species and conditions of interest for inertial confinement fusion. For the mixed species studied, the partial pressure mixing rule is used. Results including pressures, dc, and thermal conductivities are compared to ab initio calculations. Agreement for pressures is good, for both the pure and mixed species. For conductivities, it is found that the ad hoc renormalization method with line broadening, described in the text, gives best agreement with the ab initio results. However, some disagreement is found and the possible reasons for this are discussed.

Starrett, C. E.; Kress, J. D.; Collins, L. A.; Hanson, D. E. [Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545 (United States); Clerouin, J. [CEA, DAM, DIF, 91297 Arpajon Cedex (France); Recoules, V. [CEA, DAM, DIF, 91297 Arpajon Cedex (France); LUTH UMR8102, Observatoire de Paris, CNRS, Universite Paris Diderot, 92195 Meudon (France)

2012-10-15T23:59:59.000Z

65

Fast six-channel pyrometer for warm-dense-matter experiments with intense heavy-ion beams  

E-Print Network (OSTI)

USA M. I. Kulish, V. Mintsev, D. N. Nikolaev, and V. Ya.USA M. I. Kulish, V. Mintsev, D. N. Nikolaev, and V. Ya.

Ni, P.A.

2008-01-01T23:59:59.000Z

66

Toward a physics design for NDCX-II, an ion accelerator for warm dense matter and HIF target physics studies  

E-Print Network (OSTI)

Berkeley CA USA Princeton Plasma Physics Laboratory,Laboratory, and Princeton Plasma Physics Laboratory, isDE-AC03-76SF00098, the Princeton Plasma Physics Laboratory

Friedman, A.

2008-01-01T23:59:59.000Z

67

Strong CP violation and chiral symmetry breaking in hot and dense quark matter  

E-Print Network (OSTI)

We investigate chiral symmetry breaking and strong CP violation effects in the phase diagram of strongly interacting matter. We demonstrate the effect of strong CP violating terms on the phase structure at finite temperature and densities in a 3-flavor Nambu-Jona-Lasinio (NJL) model including the Kobayashi-Maskawa-t'Hooft (KMT) determinant term. This is investigated using an explicit structure for the ground state in terms of quark-antiquark condensates for both in the scalar and the pseudoscalar channels. CP restoring transition with temperature at zero baryon density is found to be a second order transition at $\\theta = \\pi$ while the same at finite chemical potential and small temperature turns out to be a first order transition. Within the model, the tri-critical point turns out to be $(T_c,\\mu_c)\\simeq(273,94)$ MeV at $\\theta = \\pi$ for such a transition.

Bhaswar Chatterjee; Hiranmaya Mishra; Amruta Mishra

2011-11-17T23:59:59.000Z

68

Observation of the critical end point in the phase diagram for hot and dense nuclear matter  

E-Print Network (OSTI)

Excitation functions for the Gaussian emission source radii difference ($R^2_{\\text{out}} - R^2_{\\text{side}}$) obtained from two-pion interferometry measurements in Au+Au ($\\sqrt{s_{NN}}= 7.7 - 200$ GeV) and Pb+Pb ($\\sqrt{s_{NN}}= 2.76$ TeV) collisions, are studied for a broad range of collision centralities. The observed non-monotonic excitation functions validate the finite-size scaling patterns expected for the deconfinement phase transition and the critical end point (CEP), in the temperature vs. baryon chemical potential ($T,\\mu_B$) plane of the nuclear matter phase diagram. A Finite-Size Scaling (FSS) analysis of these data indicate a second order phase transition with the estimates $T^{\\text{cep}} \\sim 165$~MeV and $\\mu_B^{\\text{cep}} \\sim 100$~MeV for the location of the critical end point. The critical exponents ($\

Lacey, Roy A

2014-01-01T23:59:59.000Z

69

Unraveling resistive versus collisional contributions to relativistic electron beam stopping power in cold-solid and in warm-dense plasmas  

SciTech Connect

We present results on laser-driven relativistic electron beam propagation through aluminum samples, which are either solid and cold or compressed and heated by laser-induced shock. A full numerical description of fast electron generation and transport is found to reproduce the experimental absolute K{sub ?} yield and spot size measurements for varying target thicknesses, and to sequentially quantify the collisional and resistive electron stopping powers. The results demonstrate that both stopping mechanisms are enhanced in compressed Al samples and are attributed to the increase in the medium density and resistivity, respectively. For the achieved time- and space-averaged electronic current density, ?j{sub h}??8×10{sup 10}?A/cm{sup 2} in the samples, the collisional and resistive stopping powers in warm and compressed Al are estimated to be 1.5?keV/?m and 0.8?keV/?m, respectively. By contrast, for cold and solid Al, the corresponding estimated values are 1.1?keV/?m and 0.6?keV/?m. Prospective numerical simulations involving higher j{sub h} show that the resistive stopping power can reach the same level as the collisional one. In addition to the effects of compression, the effect of the transient behavior of the resistivity of Al during relativistic electron beam transport becomes progressively more dominant, and for a significantly high current density, j{sub h}?10{sup 12}?A/cm{sup 2}, cancels the difference in the electron resistive stopping power (or the total stopping power in units of areal density) between solid and compressed samples. Analytical calculations extend the analysis up to j{sub h}=10{sup 14}?A/cm{sup 2} (representative of the full-scale fast ignition scenario of inertial confinement fusion), where a very rapid transition to the Spitzer resistivity regime saturates the resistive stopping power, averaged over the electron beam duration, to values of ?1?keV/?m.

Vauzour, B. [CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), Univ. Bordeaux, UMR 5107, F-33405 Talence (France) [CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), Univ. Bordeaux, UMR 5107, F-33405 Talence (France); Laboratoire d'Optique Appliquée, ENSTA-CNRS-Ecole Polytechnique, UMR 7639, 91761 Palaiseau (France); Debayle, A. [ETSI Aeronáuticos, Universidad Politécnica de Madrid, Madrid (Spain) [ETSI Aeronáuticos, Universidad Politécnica de Madrid, Madrid (Spain); CEA, DAM, DIF, F-91297 Arpajon (France); Vaisseau, X.; Hulin, S.; Nicolaï, Ph.; Dorchies, F.; Fourment, C.; D'Humières, E.; Tikhonchuk, V. T.; Santos, J. J., E-mail: santos.joao@celia.u-bordeaux1.fr [CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), Univ. Bordeaux, UMR 5107, F-33405 Talence (France); Schlenvoigt, H.-P.; Baton, S. D.; Yahia, V. [LULI, Ecole Polytechnique, CNRS/CEA/UPMC, 91128 Palaiseau Cedex (France)] [LULI, Ecole Polytechnique, CNRS/CEA/UPMC, 91128 Palaiseau Cedex (France); Batani, D. [CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), Univ. Bordeaux, UMR 5107, F-33405 Talence (France) [CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), Univ. Bordeaux, UMR 5107, F-33405 Talence (France); Dipartimento di Fisica, Università di Milano-Bicocca, Milano 20126 (Italy); Honrubia, J. J. [ETSI Aeronáuticos, Universidad Politécnica de Madrid, Madrid (Spain)] [ETSI Aeronáuticos, Universidad Politécnica de Madrid, Madrid (Spain); Beg, F. N.; Chawla, S.; Jarrot, L. C. [University of California, San Diego, La Jolla, California 92093 (United States)] [University of California, San Diego, La Jolla, California 92093 (United States); Benocci, R.; Volpe, L. [Dipartimento di Fisica, Università di Milano-Bicocca, Milano 20126 (Italy)] [Dipartimento di Fisica, Università di Milano-Bicocca, Milano 20126 (Italy); and others

2014-03-15T23:59:59.000Z

70

Detailed analysis of hollow ions spectra from dense matter pumped by X-ray emission of relativistic laser plasma  

SciTech Connect

X-ray emission from hollow ions offers new diagnostic opportunities for dense, strongly coupled plasma. We present extended modeling of the x-ray emission spectrum reported by Colgan et al. [Phys. Rev. Lett. 110, 125001 (2013)] based on two collisional-radiative codes: the hybrid-structure Spectroscopic Collisional-Radiative Atomic Model (SCRAM) and the mixed-unresolved transition arrays (MUTA) ATOMIC model. We show that both accuracy and completeness in the modeled energy level structure are critical for reliable diagnostics, investigate how emission changes with different treatments of ionization potential depression, and discuss two approaches to handling the extensive structure required for hollow-ion models with many multiply excited configurations.

Hansen, S. B., E-mail: sbhanse@sandia.gov, E-mail: anatolyf@hotmail.com [Sandia National Laboratories, Albuquerque, New Mexico 87123 (United States); Colgan, J.; Abdallah, J. [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Faenov, A. Ya., E-mail: sbhanse@sandia.gov, E-mail: anatolyf@hotmail.com [Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412 (Russian Federation); Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kyoto 619-0215 (Japan); Pikuz, S. A.; Skobelev, I. Yu. [Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412 (Russian Federation)] [Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412 (Russian Federation); Wagenaars, E.; Culfa, O.; Dance, R. J.; Tallents, G. J.; Rossall, A. K.; Woolsey, N. C. [York Plasma Institute, Department of Physics, University of York, York YO10 5DD (United Kingdom)] [York Plasma Institute, Department of Physics, University of York, York YO10 5DD (United Kingdom); Booth, N.; Lancaster, K. L. [Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX (United Kingdom)] [Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX (United Kingdom); Evans, R. G. [Department of Physics, Imperial College, London SW7 2AZ (United Kingdom)] [Department of Physics, Imperial College, London SW7 2AZ (United Kingdom); Gray, R. J.; McKenna, P. [SUPA, Department of Physics, University of Strathclyde, Glasgow G4 ONG (United Kingdom)] [SUPA, Department of Physics, University of Strathclyde, Glasgow G4 ONG (United Kingdom); Kaempfer, T.; Schulze, K. S. [Helmholtzinstitut Jena, Jena D-07743 (Germany)] [Helmholtzinstitut Jena, Jena D-07743 (Germany); Uschmann, I. [Helmholtzinstitut Jena, Jena D-07743 (Germany) [Helmholtzinstitut Jena, Jena D-07743 (Germany); Institut für Optik und Quantenelektronic, Friedrich-Schiller-Universität Jena, Max-Wien Platz 1, Jena, D-07743 (Germany); and others

2014-03-15T23:59:59.000Z

71

Probing the neutron star interior and the Equation of State of cold dense matter with the SKA  

E-Print Network (OSTI)

With an average density higher than the nuclear density, neutron stars (NS) provide a unique test-ground for nuclear physics, quantum chromodynamics (QCD), and nuclear superfluidity. Determination of the fundamental interactions that govern matter under such extreme conditions is one of the major unsolved problems of modern physics, and -- since it is impossible to replicate these conditions on Earth -- a major scientific motivation for SKA. The most stringent observational constraints come from measurements of NS bulk properties: each model for the microscopic behaviour of matter predicts a specific density-pressure relation (its `Equation of state', EOS). This generates a unique mass-radius relation which predicts a characteristic radius for a large range of masses and a maximum mass above which NS collapse to black holes. It also uniquely predicts other bulk quantities, like maximum spin frequency and moment of inertia. The SKA, in Phase 1 and particularly in Phase 2 will, thanks to the exquisite timing pr...

Watts, Anna; Espinoza, Cristobal; Andersson, Nils; Antoniadis, John; Antonopoulou, Danai; Buchner, Sarah; Dai, Shi; Demorest, Paul; Freire, Paulo; Hessels, Jason; Margueron, Jerome; Oertel, Micaela; Patruno, Alessandro; Possenti, Andrea; Ransom, Scott; Stairs, Ingrid; Stappers, Ben

2015-01-01T23:59:59.000Z

72

CP violation and chiral symmetry breaking in hot and dense quark matter in presence of magnetic field  

E-Print Network (OSTI)

We investigate chiral symmetry breaking and strong CP violation effects on the phase diagram of strongly interacting matter in presence of a constant magnetic field. The effect of magnetic field and strong CP violating term on the phase structure at finite temperature and density is studied within a three flavor Nambu-Jona-Lasinio (NJL) model including the Kobayashi-Maskawa-t'Hooft (KMT) determinant term. This is investigated using an explicit variational ansatz for ground state with quark anti-quark pairs leading to condensates both in scalar and pseudoscalar channels. Magnetic field enhances the condensate in both the channels. Inverse magnetic catalysis for CP transition at finite chemical potential is seen for zero temperature and for small magnetic fields.

Bhaswar Chatterjee; Hiranmaya Mishra; Amruta Mishra

2014-09-11T23:59:59.000Z

73

Clusters in nuclear matter and Mott points  

E-Print Network (OSTI)

Light clusters (mass number $A \\leq 4$) in nuclear matter at subsaturation densities are described using a quantum statistical approach. In addition to self-energy and Pauli-blocking, effects of continuum correlations are taken into account to calculate the quasiparticle properties and abundances of light elements. Medium-modified quasiparticle properties are important ingredients to derive a nuclear matter equation of state applicable in the entire region of warm dense matter below saturation density. The influence of the nucleon-nucleon interaction on the quasiparticle shift is discussed.

Röpke, G

2015-01-01T23:59:59.000Z

74

Global Warming  

Science Journals Connector (OSTI)

The greenhouse effect is the process in which the absorption of infrared radiation by an atmosphere warms a planet. The effect occurs naturally to keep Earth's surface warm. However, the anthropogenic greenhouse...

2008-01-01T23:59:59.000Z

75

Quantum Simulations for Dense Matter  

SciTech Connect

High pressure systems are important, for example, to understand the interiors of giant planets (Jupiter and Saturn), for experiments at NIF (the National Ignition Facility at Livermore) related to inertially confined fusion and for other interests of DOE. In this project, we are developing innovative simulation methods (Quantum Monte Carlo methods) to allow more accurate calculation of properties of systems under extreme conditions of pressure and temperature. These methods can use the power of current day supercomputers made of very many processors, starting from the basic equations of physics to model quantum phenomena important at the microscopic scale. During the grant period, we have settled two important questions of the physics of hydrogen and helium under extreme conditions. We have found the pressures and temperatures when hydrogen and helium mix together; this is important to understand the difference of the interiors of the planets Jupiter and Saturn. Secondly, we have shown that there exists a sharp transition as a function of pressure between molecular and atomic liquid hydrogen at temperatures below 2000K. This prediction can be confirmed with high pressure experiments.

Ceperley, David M

2010-06-07T23:59:59.000Z

76

global warming's six indias  

E-Print Network (OSTI)

global warming's six indias: An Audience Segmentation Analysis #12;Global Warming's Six Indias 1............................................................................................................................................20 2. Global Warming Beliefs and Attitudes................................................................................ 21 Knowledge about global warming varies widely by group

Haller, Gary L.

77

Nuclear matter equation of state including few-nucleon correlations $(A\\leq 4)$  

E-Print Network (OSTI)

Light clusters (mass number $A \\leq 4$) in nuclear matter at subsaturation densities are described using a quantum statistical approach. In addition to self-energy and Pauli-blocking, effects of continuum correlations are taken into account to calculate the quasiparticle properties and abundances of light elements. Medium-modified quasiparticle properties are important ingredients to derive a nuclear matter equation of state applicable in the entire region of warm dense matter below saturation density. Moreover, the contribution of continuum states to the equation of state is considered. The effect of correlations within the nuclear medium on the quasiparticle energies is estimated. The properties of light clusters and continuum correlations in dense matter are of interest for nuclear structure calculations, heavy ion collisions, and for astrophysical applications such as the formation of neutron stars in core-collapse supernovae.

Röpke, G

2014-01-01T23:59:59.000Z

78

Local effects of global warming.  

E-Print Network (OSTI)

??Currently, global warming is a focus of attention. In order to scientifically evaluate evidence about global warming, and prove the existence of global warming, this… (more)

Lu, Jun

2007-01-01T23:59:59.000Z

79

QUESTIONS ABOUT GLOBAL WARMING  

E-Print Network (OSTI)

QUESTIONS ABOUT GLOBAL WARMING ¥IS IT REAL? ¥IS IT IMPORTANT? ¥WHAT IS IT DUE TO? ¥HOW MUCH MORE in the atmosphere, giving Earth its temperate climate. Global Atmosphere, Global Warming GLOBAL TEMPERATURE TREND�t a cure for global warming! Aerosols only last a short while in the atmosphere, they would have

80

Hot and dark matter  

E-Print Network (OSTI)

In this thesis, we build new Effective Field Theory tools to describe the propagation of energetic partons in hot and dense media, and we propose two new reactions for dark matter in the early universe. In the first part, ...

D'Eramo, Francesco

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Forecasting phenology under global warming  

Science Journals Connector (OSTI)

...Forrest Forecasting phenology under global warming Ines Ibanez 1 * Richard B. Primack...and site-specific responses to global warming. We found that for most species...climate change|East Asia, global warming|growing season, hierarchical...

2010-01-01T23:59:59.000Z

82

Ozone Depletion and Global Warming.  

E-Print Network (OSTI)

??Abstract This thesis examines global warming and the possible contribution that ozone depletion provides to this warming. An examination is performed to determine the extent… (more)

Fow, Alista John

2006-01-01T23:59:59.000Z

83

ARM - Lesson Plans: Global Warming  

NLE Websites -- All DOE Office Websites (Extended Search)

Plans: Global Warming Objective The objective is to understand the enhanced greenhouse effect and the effects of global warming. Important Points to Understand If the...

84

Dense gas-compatible enzymes  

DOE Patents (OSTI)

An enzymatic reaction system including a modified enzyme, and a dense gas system; modified enzymes; and methods of reacting modified enzymes in a dense gas system or liquid carbon dioxide.

Kao, Fu-jung (Dracut, MA); Laintz, Kenneth E. (Los Alamos, NM); Sawan, Samuel P. (Tyngsborough, MA); Sivils, L. Dale (Jupiter, FL); Spall, W. Dale (Los Alamos, NM)

1998-07-21T23:59:59.000Z

85

Impacts of Global Warming  

Science Journals Connector (OSTI)

The 2001 Inter-governmental Panel on Climate Change (IPCC) Report provides not merely 1, but 19 separate chapters on the impacts of global warming, comprising over 1,000 pages of descriptions...

Donald Rapp

2014-01-01T23:59:59.000Z

86

2418 global warming [n  

Science Journals Connector (OSTI)

met....(Since 1860 and especially since the early 1970s, the progressive increase in the average temperature of the atmosphere close to Earth and of the oceans, as well as the further warming expecte...

2010-01-01T23:59:59.000Z

87

Cows Causing Global Warming  

E-Print Network (OSTI)

Broadcast Transcript: Remember when President Reagan blamed trees for air pollution? Well now the Japanese are blaming cows for global warming. Apparently, the methane emissions from burping cows account for 5% of all global greenhouse gases. Simple...

Hacker, Randi

2008-08-06T23:59:59.000Z

88

Warm Mix Asphalt  

Science Journals Connector (OSTI)

Warm Mix Asphalt (WMA) technologies have potential to reduce the application temperature of Hot Mix Asphalt (HMA) and improve workability without ... a reduction in greenhouse gas emissions, decreased energy cons...

Martins Zaumanis

2014-01-01T23:59:59.000Z

89

What's the matter at RHIC?  

E-Print Network (OSTI)

I present here a concise review of the experimental results obtained at the Relativistic Heavy Ion Collider (RHIC), which shed light on the hot and dense quark gluon matter produced at these high temperature and density conditions.

Raphael Granier de Cassagnac

2007-07-03T23:59:59.000Z

90

Original article Predicted global warming  

E-Print Network (OSTI)

Original article Predicted global warming and Douglas-fir chilling requirements DD McCreary1 DP to predicted global warming. Douglas-fir / chilling / global warming / bud burst / reforestation Résumé offer evidence that mean global warming of 3-4 °C could occur within the next century, particularly

Boyer, Edmond

91

Warm Gas Cleanup  

NLE Websites -- All DOE Office Websites (Extended Search)

Warm Gas Cleanup Warm Gas Cleanup NETL Office of Research and Development Project Number: FWP-2012.03.03 Task 5 Project Description The Environmental Protection Agency (EPA) has established strict regulations for the trace contaminant emissions from integrated gasification combined cycle (IGCC) systems. The Department of Energy (DOE) performance goals for trace contaminant removal were selected to meet or exceed EPA's standard limits for contaminants, as well as to avoid poisoning of: the catalysts utilized in making liquids from fuel gas the electrodes in fuel cells selective catalytic reduction (SCR) catalysts The objective of the NETL's ORD Warm Gas Cleanup project is to assist in achieving both DOE and EPA targets for trace contaminant capture from coal gasification, while preserving the high thermal efficiency of the IGCC system. To achieve this, both lab and pilot-scale research is underway to develop sorbents capable of removing the following contaminants from high temperature syngas (up to 550°F):

92

global warming's six americas  

E-Print Network (OSTI)

Vehicles & Solar Panels 23 Regulating CO2 as a Pollutant 24 A 20 Percent National Renewable Energy Standard the spring and fall of 2012. Perceived Benefits and Costs of Reducing Fossil Fuel Use and Global Warming Introduction 5 The Six Americas Audience Segments 6 Changes in the Size of Segments 7 Perceived Benefits

Haller, Gary L.

93

Geometrical Optics of Dense Aerosols  

SciTech Connect

Assembling a free-standing, sharp-edged slab of homogeneous material that is much denser than gas, but much more rare ed than a solid, is an outstanding technological challenge. The solution may lie in focusing a dense aerosol to assume this geometry. However, whereas the geometrical optics of dilute aerosols is a well-developed fi eld, the dense aerosol limit is mostly unexplored. Yet controlling the geometrical optics of dense aerosols is necessary in preparing such a material slab. Focusing dense aerosols is shown here to be possible, but the nite particle density reduces the eff ective Stokes number of the flow, a critical result for controlled focusing. __________________________________________________

Hay, Michael J.; Valeo, Ernest J.; Fisch, Nathaniel J.

2013-04-24T23:59:59.000Z

94

Heat Waves, Global Warming, and Mitigation  

E-Print Network (OSTI)

Heat Waves, Global Warming, and Mitigation Ann E. Carlson*2008]HEAT WAVES, GLOBAL WARMING, AND MITIGATION 175 stroke2001). 2008]HEAT WAVES, GLOBAL WARMING, AND MITIGATION 177

Carlson, Ann E.

2008-01-01T23:59:59.000Z

95

Global Warming, endogenous risk and irreversibility  

E-Print Network (OSTI)

The economics of global warming, Institute for InternationalEconomic Models of Global Warming, Cambridge, Mass. MITstochastic losses from global warming, Risk Analysis 16(2):

Fisher, Anthony C.; Narain, Urvashi

2002-01-01T23:59:59.000Z

96

Matter & Energy Engineering  

E-Print Network (OSTI)

. AmericanEnergyProperties.com Related Stories New Facility BoostsGasHydrates Research (June 2, 2008) --A new & Climate Global Warming Environmental Issues Climate Reference Natural gas Hydrocarbon Automobile emissionsLike 6 0 | More APA MLA See Also: Matter & Energy Petroleum Engineering Fossil Fuels Earth

Sóbester, András

97

DM particles: how warm they can be?  

SciTech Connect

One of important questions concerning particles which compose the Dark Matter (DM) is their average speed. We consider the model of relativistic weakly interacting massive particles and try to impose an upper bound on their actual and past warmness through the analysis of density perturbations and comparison with the LSS data. It is assumed that the DM can be described by the recently invented model of reduced relativistic gas (RRG). The equation of state of the RRG model is closely reproducing the one of the Maxwell distribution, while being much simpler. This advantage of the RRG model makes our analysis very efficient. As a result we arrive at the rigid and model-independent bound for the DM warmness without using the standard (much more sophisticated) approach based on the Einstein-Boltzmann system of equations.

Fabris, Julio C. [Departamento de Fisica - CCE, Universidade Federal do Espirito Santo, Vitoria, CEP: 29060-900, ES (Brazil)] [Departamento de Fisica - CCE, Universidade Federal do Espirito Santo, Vitoria, CEP: 29060-900, ES (Brazil); Shapiro, Ilya L.; Sobreira, Flavia, E-mail: fabris@cce.ufes.br, E-mail: shapiro@fisica.ufjf.br, E-mail: flavia_sobreira@yahoo.com.br [Departamento de Fisica - ICE, Universidade Federal de Juiz de Fora, Juiz de Fora, CEP: 36036-330, MG (Brazil)] [Departamento de Fisica - ICE, Universidade Federal de Juiz de Fora, Juiz de Fora, CEP: 36036-330, MG (Brazil)

2009-02-15T23:59:59.000Z

98

4, 10591092, 2007 Global warming  

E-Print Network (OSTI)

BGD 4, 1059­1092, 2007 Global warming potential of agro-ecosystems S. Lehuger et al. Title Page Predicting the global warming potential of agro-ecosystems S. Lehuger, B. Gabrielle, E. Larmanou, P. Laville Correspondence to: S. Lehuger (simon.lehuger@grignon.inra.fr) 1059 #12;BGD 4, 1059­1092, 2007 Global warming

Paris-Sud XI, Université de

99

Pseudo-Goldstone modes in isospin-asymmetric nuclear matter  

SciTech Connect

The authors analyze the chiral limit in dense isospin-asymmetric nuclear matter. It is shown that the pseudo-Goldstone modes in this system are qualitatively different from the case of isospin-symmetric matter.

Cohen, T.D. [Univ. of Washington, Seattle, WA (United States); Broniowski, W. [H. Niewodniczanski Institute of Nuclear Physics, Cracow (Poland)

1995-01-01T23:59:59.000Z

100

Distinct optical properties of relativistically degenerate matter  

SciTech Connect

In this paper, we use the collisional quantum magnetohydrodynamic (CQMHD) model to derive the transverse dielectric function of a relativistically degenerate electron fluid and investigate various optical parameters, such as the complex refractive index, the reflection and absorption coefficients, the skin-depth and optical conductivity. In this model we take into accounts effects of many parameters such as the atomic-number of the constituent ions, the electron exchange, electron diffraction effect and the electron-ion collisions. Study of the optical parameters in the solid-density, the warm-dense-matter, the big-planetary core, and the compact star number-density regimes reveals that there are distinct differences between optical characteristics of the latter and the former cases due to the fundamental effects of the relativistic degeneracy and other quantum mechanisms. It is found that in the relativistic degeneracy plasma regime, such as found in white-dwarfs and neutron star crusts, matter possess a much sharper and well-defined step-like reflection edge beyond the x-ray electromagnetic spectrum, including some part of gamma-ray frequencies. It is also remarked that the magnetic field intensity only significantly affects the plasma reflectivity in the lower number-density regime, rather than the high density limit. Current investigation confirms the profound effect of relativistic degeneracy on optical characteristics of matter and can provide an important plasma diagnostic tool for studying the physical processes within the wide scope of quantum plasma regimes be it the solid-density, inertial-confined, or astrophysical compact stars.

Akbari-Moghanjoughi, M. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz 51745-406 (Iran, Islamic Republic of); International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, Bochum D-44780 (Germany)

2014-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

"Phase freezeout" in isentropically expanding matter  

E-Print Network (OSTI)

Features of isentropic expansion of warm dense matter (WDM) created by intense energy fluxes (strong shock compression or instant isochoric heating by laser or heavy ions) are under discussion in situation when ($i$) -- thermodynamic trajectory of such expansion crosses binodal of liquid-gas phase transition, and ($ii$) -- expansion within the two-phase region is going along equilibrium branch (not metastable one) of the two-phase mixture isentrope. It is known in the plane case that because of break in the expansion isentrope at binodal point (in $P-V$ plane) i.e. jump of sound velocity in this point, there appears extended zone ("boiling layer") of uniformity in expanding material with constant thermodynamic and kinematic parameters. It corresponds just to the state on this binodal of boiling liquid. The point is that because of self-similarity of such expansion (in plane case) this boiling layer contains finite and fixed part of whole expanding material. This property makes it possible (at least formally) ...

Iosilevskiy, Igor

2014-01-01T23:59:59.000Z

102

Warming alters the metabolic balance of ecosystems  

Science Journals Connector (OSTI)

...particular, it is unclear how global warming will affect the metabolic balance...change on key ecosystem services. global warming|carbon sequestration|carbon...for the ecological impacts of global warming on individual taxa is now unequivocal...

2010-01-01T23:59:59.000Z

103

New experimental platform to study high density laser-compressed matter  

SciTech Connect

We have developed a new experimental platform at the Linac Coherent Light Source (LCLS) which combines simultaneous angularly and spectrally resolved x-ray scattering measurements. This technique offers a new insights on the structural and thermodynamic properties of warm dense matter. The < 50 fs temporal duration of the x-ray pulse provides near instantaneous snapshots of the dynamics of the compression. We present a proof of principle experiment for this platform to characterize a shock-compressed plastic foil. We observe the disappearance of the plastic semi-crystal structure and the formation of a compressed liquid ion-ion correlation peak. The plasma parameters of shock-compressed plastic can be measured as well, but requires an averaging over a few tens of shots.

Gauthier, M., E-mail: maxence.gauthier@stanford.edu; Fletcher, L. B.; Galtier, E.; Gamboa, E. J.; Granados, E.; Hastings, J. B.; Heimann, P.; Lee, H. J.; Nagler, B.; Schropp, A.; Falcone, R.; Glenzer, S. H. [SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States); Ravasio, A. [SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States); LULI, Ecole Polytechnique, Palaiseau (France); Gleason, A. [Department of Geological and Environmental Sciences, Stanford University, Menlo Park, California 94025 (United States); Döppner, T.; LePape, S.; Ma, T.; Pak, A. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States); MacDonald, M. J. [Atmospheric, Oceanic, and Space Science Department, University of Michigan, Ann Arbor, Michigan 48109 (United States); Ali, S. [Physics Department, University of California Berkeley, Berkeley, California 94709 (United States); and others

2014-11-15T23:59:59.000Z

104

Understanding Public Perceptions of Global Warming.  

E-Print Network (OSTI)

??In this dissertation, I investigate the determinants on Americans perceptions of global warming and individuals environmentally significant behaviors to reduce global warming. Specially, I examine… (more)

Shao, Wanyun

2012-01-01T23:59:59.000Z

105

Global Warming and Extreme Weather  

NLE Websites -- All DOE Office Websites (Extended Search)

Global Warming and Extreme Weather Global Warming and Extreme Weather Speaker(s): Michael Wehner Date: November 28, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Surabi Menon Extreme weather events can have serious impacts on human and ecological systems. Changes in the magnitude and frequency of extreme weather associated with changes in the mean climate are likely the most serious consequence of human induced global warming. Understanding what the future portends is vital if society hopes to adapt to the very different world that awaits. In this talk, we will exploit simple extreme value theory to make predictions about the late 21st century climate. Current work on the relationship between global warming and the hurricane cycle will also be presented. The bottom line is that events that are considered rare today

106

The Psychology of Global Warming  

Science Journals Connector (OSTI)

The evidence in support of global warming and the lack of significant published evidence to the contrary provides an extraordinarily strong foundation for the scientific community's call for action on greenhouse gas emissions. However, public ...

Ben R. Newell; Andrew J. Pitman

2010-08-01T23:59:59.000Z

107

Global Warming: A Science Overview  

Science Journals Connector (OSTI)

Fossil fuels (i.e., coal, oil, and natural gas) provide about ... various control efforts and to the problem of global warming, which is now being considered by governments ... six key aspects of the scientific f...

Michael C. MacCracken

2001-01-01T23:59:59.000Z

108

Dense Bottom Currents in Rotating Ocean  

Science Journals Connector (OSTI)

A dense bottom current is the flow created by a source of mass, momentum, and buoyancy flowing into an ambient fluid in such a way that the flow is bounded by the fixed wall and the interface. The dense bottom...

Flemming Bo Pedersen

1986-01-01T23:59:59.000Z

109

PRINT ONLY: GLOBAL WARMING Alexeev V. A.  

E-Print Network (OSTI)

PRINT ONLY: GLOBAL WARMING Alexeev V. A. Global Warming: 0.6°C or Less? [#1035] The peculiarities of global warming on the Earth during the last century are discussed. Lunar and Planetary Science XXXVIII (2007) full818.pdf #12;GLOBAL WARMING: 0.6 OR LESS? V.A.Alexeev; Vernadsky Institute of Geochemistry

Rathbun, Julie A.

110

Case Study #1 "The Global Warming Debate"  

E-Print Network (OSTI)

CHEM 001A Case Study #1 "The Global Warming Debate" Global warming is one of the most contentious issues of our time. There is an ongoing debate about whether global warming is caused by human activity.S., and because the scientific evidence used to determine if global warming is man-made is so difficult

Reed, Christopher A.

111

Dense, finely, grained composite materials  

DOE Patents (OSTI)

Dense, finely grained composite materials comprising one or more ceramic phase or phase and one or more metallic and/or intermetallic phase or phases are produced by combustion synthesis. Spherical ceramic grains are homogeneously dispersed within the matrix. Methods are provided, which include the step of applying mechanical pressure during or immediately after ignition, by which the microstructures in the resulting composites can be controllably selected.

Dunmead, Stephen D. (Davis, CA); Holt, Joseph B. (San Jose, CA); Kingman, Donald D. (Danville, CA); Munir, Zuhair A. (Davis, CA)

1990-01-01T23:59:59.000Z

112

Dense Plasma X-ray Scattering: Methods and Applications  

SciTech Connect

We have developed accurate x-ray scattering techniques to measure the physical properties of dense plasmas. Temperature and density are inferred from inelastic x-ray scattering data whose interpretation is model-independent for low to moderately coupled systems. Specifically, the spectral shape of the non-collective Compton scattering spectrum directly reflects the electron velocity distribution. In partially Fermi degenerate systems that have been investigated experimentally in laser shock-compressed beryllium, the Compton scattering spectrum provides the Fermi energy and hence the electron density. We show that forward scattering spectra that observe collective plasmon oscillations yield densities in agreement with Compton scattering. In addition, electron temperatures inferred from the dispersion of the plasmon feature are consistent with the ion temperature sensitive elastic scattering feature. Hence, theoretical models of the static ion-ion structure factor and consequently the equation of state of dense matter can be directly tested.

Glenzer, S H; Lee, H J; Davis, P; Doppner, T; Falcone, R W; Fortmann, C; Hammel, B A; Kritcher, A L; Landen, O L; Lee, R W; Munro, D H; Redmer, R; Weber, S

2009-08-19T23:59:59.000Z

113

A Representation of SU(2) and Isospin Waves in a Solid Nuclear Matter  

Science Journals Connector (OSTI)

......2) and Isospin Waves in a Solid Nuclear Matter Koichi Takahashi Department...variational evaluation of the ground state energy under pion condensation on a dense...Deformation of Lattice in a Solid Nuclear Matter Koichi Takahashi References......

Koichi Takahashi

1991-09-01T23:59:59.000Z

114

Cosmic Rays and Global Warming  

E-Print Network (OSTI)

It has been claimed by others that observed temporal correlations of terrestrial cloud cover with `the cosmic ray intensity' are causal. The possibility arises, therefore, of a connection between cosmic rays and Global Warming. If true, the implications would be very great. We have examined this claim to look for evidence to corroborate it. So far we have not found any and so our tentative conclusions are to doubt it. Such correlations as appear are more likely to be due to the small variations in solar irradiance, which, of course, correlate with cosmic rays. We estimate that less than 15% of the 11-year cycle warming variations are due to cosmic rays and less than 2% of the warming over the last 35 years is due to this cause.

T. Sloan; A W Wolfendale

2007-06-28T23:59:59.000Z

115

Lattice Dynamics of Dense Lithium  

Science Journals Connector (OSTI)

We report low-frequency high-resolution Raman spectroscopy and ab-initio calculations on dense lithium from 40 to 200 GPa at low temperatures. Our experimental results reveal rich first-order Raman activity in the metallic and semiconducting phases of lithium. The computed Raman frequencies are in excellent agreement with the measurements. Free energy calculations provide a quantitative description and physical explanation of the experimental phase diagram only when vibrational effect are correctly treated. The study underlines the importance of zero-point energy in determining the phase stability of compressed lithium.

F. A. Gorelli; S. F. Elatresh; C. L. Guillaume; M. Marqués; G. J. Ackland; M. Santoro; S. A. Bonev; E. Gregoryanz

2012-01-30T23:59:59.000Z

116

Global Warming Potential and Global Warming Commitment Concepts in the Assessment of Climate Radiative Forcing Effects  

Science Journals Connector (OSTI)

The Global Warming Potential (GWP) and Radiative Forcing (RF ... CS) and Individual (IS) schemes. The Global Warming Commitment (GWC) is calculated by the...

Igor L. Karol; Victor A. Frolkis…

2000-01-01T23:59:59.000Z

117

GLOBAL WARMING THE GREENHOUSE EFFECT  

E-Print Network (OSTI)

GLOBAL WARMING THE GREENHOUSE EFFECT AND YOUR FAMILY'S CONTRIBUTION TO IT Stephen E. Schwartz GREENHOUSE EFFECT #12;GLOBAL ENERGY BALANCE Global and annual average energy fluxes in watts per square meter about it.But nobody does anything about it. ­ Mark Twain­ Mark Twain Now with the greenhouse effect, we

Schwartz, Stephen E.

118

GLOBAL WARMING THE GREENHOUSE EFFECT  

E-Print Network (OSTI)

GLOBAL WARMING THE GREENHOUSE EFFECT AND YOUR FAMILY'S CONTRIBUTION TO IT Stephen E. Schwartz September 22, 2004 http://www.ecd.bnl.gov/steve/schwartz.html #12;#12;THE GREENHOUSE EFFECT #12;GLOBAL does anything about it. ­ Mark Twain­ Mark Twain Now with the greenhouse effect, we ARE doing something

Schwartz, Stephen E.

119

Solenoid transport of a heavy ion beam for warm dense matterstudies and inertial confinement fusion  

SciTech Connect

From February to July 2006, I have been doing research as a guest at Lawrence Berkeley National Laboratory (LBNL), in the Heavy Ion Fusion group. This internship, which counts as one semester in my master's program in France, I was very pleased to do it in a field that I consider has the beauty of fundamental physics, and at the same time the special appeal of a quest for a long-term and environmentally-respectful energy source. During my stay at LBNL, I have been involved in three projects, all of them related to Neutralized Drift Compression Experiment (NDCX). The first one, experimental and analytical, has consisted in measuring the effects of the eddy currents induced by the pulsed magnets in the conducting plates of the source and diagnostic chambers of the Solenoid Transport Experiment (STX, which is a subset of NDCX). We have modeled the effect and run finite-element simulations that have reproduced the perturbation to the field. Then, we have modified WARP, the Particle-In-Cell code used to model the whole experiment, in order to import realistic fields including the eddy current effects and some details of each magnet. The second project has been to take part in a campaign of WARP simulations of the same experiment to understand the leakage of electrons that was observed in the experiment as a consequence to some diagnostics and the failure of the electrostatic electron trap. The simulations have shown qualitative agreement with the measured phenomena, but are still in progress. The third project, rather theoretical, has been related to the upcoming target experiment of a thin aluminum foil heated by a beam to the 1-eV range. At the beginning I helped by analyzing simulations of the hydrodynamic expansion and cooling of the heated material. But, progressively, my work turned into making estimates for the nature of the liquid/vapor two-phase flow. In particular, I have been working on criteria and models to predict the formation of droplets, their size, and their partial or total evaporation in the expanding flow.

Armijo, Julien

2006-10-01T23:59:59.000Z

120

Effects of anisotropy on optimal dense coding  

E-Print Network (OSTI)

We study optimal dense coding with thermal entangled states of a two-qubit anisotropic \\emph{XXZ} model and a Heisenberg model with Dzyaloshinski-Moriya (DM) interactions. The DM interaction is another kind of anisotropic antisymmetric exchange interaction. The effects of these two kinds of anisotropies on dense coding are studied in detail for both the antiferromagnetic and ferromagnetic cases. For the two models, we give the conditions that the parameters of the models have to satisfy for a valid dense coding. We also found that even though there is entanglement, it is unavailable for our optimal dense coding, which is the same as entanglement teleportation.

Guo-Feng Zhang

2008-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

An Explanation of Global Warming without Supercomputing  

E-Print Network (OSTI)

An Explanation of Global Warming without Supercomputing K. Miyazaki E-mail: miyazakiro that the climate sensitivity never exceeds 6 C. Consequently, the anthropogenic global warming is severely limited be calculated in simple terms. Global warming is like that." However, there will be not a few physicists who do

122

An Explanation of Global Warming without Supercomputing  

E-Print Network (OSTI)

An Explanation of Global Warming without Supercomputing (revised version) K. Miyazaki E that the anthropogenic global warming is severely limited because the Earth is a water planet. 1 Introduction Now,2,3] on this anthropogenic global warming (AGW) is essentially based on the results of elaborate and enormous computer

123

The Global Warming Debate: A July Hottest Month on Record in U.S.--Warming and  

E-Print Network (OSTI)

The Global Warming Debate: A Case Study July Hottest Month on Record in U.S.--Warming and Drought was the hottest month on record in the United States, perhaps due to a combination of global warming the fact that there is more than just natural variability playing a role: Global warming from human

Reed, Christopher A.

124

5 - Consequences of Global Warming  

Science Journals Connector (OSTI)

Abstract This chapter looks at different areas of risk associated with the onset of global warming. The first risk area refers to pathogens and diseases. We first discuss perspectives on disease spread, and focus on the role played by globalization and the current livestock “revolution” strongly affected by large-scale processes of urbanization. We then discuss zoonoses, or diseases that are passed between humans and other animals, and identify 11 kinds of zoonoses associated with global warming. Although not a zoonose, malaria is also discussed. Patterns of transmission associated with warming tend to be poleward, and small changes in temperature can produce large changes in disease vectors to higher latitudes. A brief presentation of the history of malaria shows how it has had a substantial effect on conflicts in the past, particularly the US Civil War (1861–1865) and World War I. It has been famously suggested that World War I ended because of the spread of Swine Flu, decimating the Axis troops and rendering many units unable to continue fighting. AIDS is presented as a contemporary example of the way in which diseases can profoundly undermine the capacity of a country to provide security and state leadership, and undercut international peacekeeping activities.

John P. Crank; Linda S. Jacoby

2015-01-01T23:59:59.000Z

125

Warm or Steaming Ground | Open Energy Information  

Open Energy Info (EERE)

Warm or Steaming Ground Warm or Steaming Ground Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Warm or Steaming Ground Dictionary.png Warm or Steaming Ground: An area where geothermal heat is conducted to the earth's surface, warming the ground and sometimes causing steam to form when water is present. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Steam rising from the ground at Eldvorp, a 10 km row of craters, in Southwestern Iceland. http://www.visiticeland.com/SearchResults/Attraction/eldvorp Warm or steaming ground is often an indicator of a geothermal system beneath the surface. In some cases a geothermal system may not show any

126

Development and Benchmarking of a Hybrid PIC Code For Dense Plasmas and Fast Ignition  

SciTech Connect

Radiation processes play an important role in the study of both fast ignition and other inertial confinement schemes, such as plasma jet driven magneto-inertial fusion, both in their effect on energy balance, and in generating diagnostic signals. In the latter case, warm and hot dense matter may be produced by the convergence of a plasma shell formed by the merging of an assembly of high Mach number plasma jets. This innovative approach has the potential advantage of creating matter of high energy densities in voluminous amount compared with high power lasers or particle beams. An important application of this technology is as a plasma liner for the flux compression of magnetized plasma to create ultra-high magnetic fields and burning plasmas. HyperV Technologies Corp. has been developing plasma jet accelerator technology in both coaxial and linear railgun geometries to produce plasma jets of sufficient mass, density, and velocity to create such imploding plasma liners. An enabling tool for the development of this technology is the ability to model the plasma dynamics, not only in the accelerators themselves, but also in the resulting magnetized target plasma and within the merging/interacting plasma jets during transport to the target. Welch pioneered numerical modeling of such plasmas (including for fast ignition) using the LSP simulation code. Lsp is an electromagnetic, parallelized, plasma simulation code under development since 1995. It has a number of innovative features making it uniquely suitable for modeling high energy density plasmas including a hybrid fluid model for electrons that allows electrons in dense plasmas to be modeled with a kinetic or fluid treatment as appropriate. In addition to in-house use at Voss Scientific, several groups carrying out research in Fast Ignition (LLNL, SNL, UCSD, AWE (UK), and Imperial College (UK)) also use LSP. A collaborative team consisting of HyperV Technologies Corp., Voss Scientific LLC, FAR-TECH, Inc., Prism Computational Sciences, Inc. and Advanced Energy Systems Inc. joined efforts to develop new physics and numerical models for LSP in several key areas to enhance the ability of LSP to model high energy density plasmas (HEDP). This final report details those efforts. Areas addressed in this research effort include: adding radiation transport to LSP, first in 2D and then fully 3D, extending the EMHD model to 3D, implementing more advanced radiation and electrode plasma boundary conditions, and installing more efficient implicit numerical algorithms to speed complex 2-D and 3-D computations. The new capabilities allow modeling of the dominant processes in high energy density plasmas, and further assist the development and optimization of plasma jet accelerators, with particular attention to MHD instabilities and plasma/wall interaction (based on physical models for ion drag friction and ablation/erosion of the electrodes). In the first funding cycle we implemented a solver for the radiation diffusion equation. To solve this equation in 2-D, we used finite-differencing and applied the parallelized sparse-matrix solvers in the PETSc library (Argonne National Laboratory) to the resulting system of equations. A database of the necessary coefficients for materials of interest was assembled using the PROPACEOS and ATBASE codes from Prism. The model was benchmarked against Prism's 1-D radiation hydrodynamics code HELIOS, and against experimental data obtained from HyperV's separately funded plasma jet accelerator development program. Work in the second funding cycle focused on extending the radiation diffusion model to full 3-D, continued development of the EMHD model, optimizing the direct-implicit model to speed up calculations, add in multiply ionized atoms, and improved the way boundary conditions are handled in LSP. These new LSP capabilities were then used, along with analytic calculations and Mach2 runs, to investigate plasma jet merging, plasma detachment and transport, restrike and advanced jet accelerator design. In addition, a strong linkage to diagnostic measureme

Witherspoon, F. Douglas [HyperV Technologies Corp.; Welch, Dale R. [Voss Scientific, LLC; Thompson, John R. [FAR-TECH, Inc.; MacFarlane, Joeseph J. [Prism Computational Sciences Inc.; Phillips, Michael W. [Advanced Energy Systems, Inc.; Bruner, Nicki [Voss Scientific, LLC; Mostrom, Chris [Voss Scientific, LLC; Thoma, Carsten [Voss Scientific, LLC; Clark, R. E. [Voss Scientific, LLC; Bogatu, Nick [FAR-TECH, Inc.; Kim, Jin-Soo [FAR-TECH, Inc.; Galkin, Sergei [FAR-TECH, Inc.; Golovkin, Igor E. [Prism Computational Sciences, Inc.; Woodruff, P. R. [Prism Computational Sciences, Inc.; Wu, Linchun [HyperV Technologies Corp.; Messer, Sarah J. [HyperV Technologies Corp.

2014-05-20T23:59:59.000Z

127

Viscosity measurements in dense microemulsions  

Science Journals Connector (OSTI)

We report the results of a measurement of the shear viscosity as a function of the temperature and of the water volume fraction in a three-component sodium di(2-ethylhexyl)sulfosuccinate-decane-water microemulsion. The explored concentration range is 0???0.73 and the packing fraction of the water-in-oil spherical droplets has been changed in order to obtain a very dense glass-forming liquid. Well-defined maxima in the relative viscosity have been observed at different concentrations and the corresponding temperature values decrease with increasing ?. The data are discussed considering the system as a colloidal one in which aggregation phenomena are present. In such a way, on the basis of a two-fluid model, we can consider two different contributions to the viscosity. One is directly connected to the repulsive interaction potential, while the second one is directly connected to the attractive interaction that contributes indirectly, through the formation of aggregates. The results are compatible with those previously obtained by light-scattering measurements that gives clear evidence of the presence of a large structural order at the glass transition.

D. Majolino; F. Mallamace; S. Venuto; N. Micali

1990-12-15T23:59:59.000Z

128

When matter matters  

SciTech Connect

We study a recently proposed scenario for the early universe:Subluminal Galilean Genesis. We prove that without any other matter present in the spatially flat Friedmann universe, the perturbations of the Galileon scalar field propagate with a speed at most equal to the speed of light. This proof applies to all cosmological solutions — to the whole phase space. However, in a more realistic situation, when one includes any matter which is not directly coupled to the Galileon, there always exists a region of phase space where these perturbations propagate superluminally, indeed with arbitrarily high speed. We illustrate our analytic proof with numerical computations. We discuss the implications of this result for the possible UV completion of the model.

Easson, Damien A. [Department of Physics and School of Earth and Space Exploration and Beyond Center, Arizona State University, Tempe, AZ, 85287-1504 (United States); Sawicki, Ignacy [Institut für Theoretische Physik, Ruprecht-Karls-Universität Heidelberg Philosophenweg 16, 69120 Heidelberg (Germany); Vikman, Alexander, E-mail: easson@asu.edu, E-mail: ignacy.sawicki@uni-heidelberg.de, E-mail: alexander.vikman@cern.ch [CERN, Theory Division, CH-1211 Genève 23 (Switzerland)

2013-07-01T23:59:59.000Z

129

Soil degradation, global warming and climate impacts  

E-Print Network (OSTI)

will demonstrate one methodology for assessing the potential large-scale impacts of soil degradation on African climates and water resources. In addition it will compare and contrast these impacts to those expected from global warming and compare impacts for differ...- ent watershed regions on the continent. 2. METHODS In order to make a similar comparison between pro- jected climate change scenarios due to global warming © Inter-Research 2001 *E-mail: feddema@ku.edu Soil degradation, global warming and climate...

Feddema, Johannes J.; Freire, Sergio Carneiro

2001-01-01T23:59:59.000Z

130

2 - What Is Global Warming?  

Science Journals Connector (OSTI)

Abstract In this chapter, we introduce students to the basic notion of global warming. We begin with a discussion of the historical ordinariness of global temperature swings, reviewing patterns of temperature changes across glaciations in the most recent glacial period. This is followed by a discussion of the nature of greenhouse gases, how they heat the planet, and the centrality of CO2 in the production of weather. The earth’s energy budget is presented as a chart that illustrates how various elements of the planet and its atmosphere interact to arrive at average temperatures. Following this is a discussion of human-created sources of greenhouse gases heating the planet, and here we introduce the concept of climate forcings, or external variables that are responsible for causing global temperature increases (or decreases). Primary and secondary feedbacks are shown as mechanisms in which warming, once it reaches a certain level, tends to become self-fulfilling, increasing the rate and level of heating beyond human capacity to intervene. Critical tipping points, or points at which fundamental changes in the climate will occur, are followed by a discussion of climate sensitivity, which is the assessment of the amount of temperature increase associated with increments of greenhouse gases. Finally, we ask “how hot will it get,” and close with a discussion of overall heating capacity for short- and long-term periods and a discussion of the duration of greenhouse gases, once introduced into the atmosphere.

John P. Crank; Linda S. Jacoby

2015-01-01T23:59:59.000Z

131

Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid...  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Berkeley Lab research could help...

132

Hydrated sulphuric acid in dense molecular clouds  

Science Journals Connector (OSTI)

......anthropogenically from combustion of fuels. Oxidized...forms readily in hydrocarbon combustion where sulphur is...dense clouds. From heat of vaporization...3 Observational Data Absorption spectra...peak absorption data in mum (cm1) for......

Flavio Scappini; Cesare Cecchi-Pestellini; Harvey Smith; William Klemperer; Alexander Dalgarno

2003-05-11T23:59:59.000Z

133

The political economy of global warming.  

E-Print Network (OSTI)

??The science is unequivocal: the Earth’s biosphere is approaching global warming tipping points which, if passed, will become irreversible, taking the planet on a trajectory… (more)

Weston, Delys E.

2012-01-01T23:59:59.000Z

134

Hotel energy use contributes to global warming.  

E-Print Network (OSTI)

??Before learning about the consequences of global warming and the efforts hotels are making to reverse the effects, it is important to get a better… (more)

Faja, Christine

2007-01-01T23:59:59.000Z

135

Heat Waves, Global Warming, and Mitigation  

E-Print Network (OSTI)

Heat Waves, Global Warming, and Mitigation Ann E. Carlson*II. HEAT WAVE DEFINITIONS .. A . HCHANGE AND HEAT WAVES .. CLIMATE III. IV. HEAT

Carlson, Ann E.

2008-01-01T23:59:59.000Z

136

Warm Forming of Aluminum?AMD 307  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

controlled conditions * Transition to future projects (e.g. warm forming of magnesium) * Lead to the development of design rules for WF tooling * Be flexible allowing...

137

Abating Global Warming for Fun and Profit  

Science Journals Connector (OSTI)

Abating global warming is generally profitable, without counting the avoided cost of adapting, or failing to adapt, to possible climatic change.

A. B. Lovins

1991-01-01T23:59:59.000Z

138

ARM - Greenhouse Effect and Global Warming  

NLE Websites -- All DOE Office Websites (Extended Search)

Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Greenhouse Effect and Global Warming The Greenhouse Effect refers to a naturally occurring...

139

Heat Waves, Global Warming, and Mitigation  

E-Print Network (OSTI)

Heat Waves, Global Warming, and Mitigation Ann E. Carlson*II. HEAT WAVE DEFINITIONS .. A . HW aves B. Heat-related

Carlson, Ann E.

2008-01-01T23:59:59.000Z

140

Background: Global Warming, 2009 1. Unequivocally, the climate is warming. Natural systems are affected.  

E-Print Network (OSTI)

Background: Global Warming, 2009 1. Unequivocally, the climate is warming. Natural systems are affected. 2. Very likely (>90% certainty), humans are causing most of the warming. 3. No single technology are very likely to impose net annual costs, which will increase over time as global temperatures increase

Minnesota, University of

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Warm Humid Climate: Methodology to Study Air Temperature Distribution: Mobile Phones Base Stations as Viable Alternative for Fixed Points  

E-Print Network (OSTI)

WARM-HUMID CLIMATE: METHODOLOGY TO STUDY AIR TEMPERATURE DISTRIBUTION: MOBILE PHONES BASE STATIONS AS VIABLE ALTERNATIVE FOR FIXED POINTS Angelina Dias Leão Costa (1); Lucila Labaki (2); Virgínia Araújo (3) (1) and (2) School of Civil... of occupation with the results of measurements. In fact, in some dense areas the highest temperatures and the lowest humidity levels were found. The proposed methodology of measurements in fixed points using mobile phone base stations is original, provides...

Araujo, V.; Costa, A.; Labaki, L.

2006-01-01T23:59:59.000Z

142

The Curious Case of Indian Ocean Warming  

Science Journals Connector (OSTI)

Recent studies have pointed out an increased warming over the Indian Ocean warm pool (the central-eastern Indian Ocean characterized by sea surface temperatures greater than 28.0°C) during the past half-century, although the reasons behind this ...

Mathew Koll Roxy; Kapoor Ritika; Pascal Terray; Sébastien Masson

2014-11-01T23:59:59.000Z

143

Dark Matter Gravitational Interactions  

E-Print Network (OSTI)

We argue that the conjectured dark mater in the Universe may be endowed with a new kind of gravitational charge that couples to a short range gravitational interaction mediated by a massive vector field. A model is constructed that assimilates this concept into ideas of current inflationary cosmology. The model is also consistent with the observed behaviour of galactic rotation curves according to Newtonian dynamics. The essential idea is that stars composed of ordinary (as opposed to dark matter) experience Newtonian forces due to the presence of an all pervading background of massive gravitationally charged cold dark matter. The novel gravitational interactions are predicted to have a significant influence on pre-inflationary cosmology. The precise details depend on the nature of a gravitational Proca interaction and the description of matter. A gravitational Proca field configuration that gives rise to attractive forces between dark matter charges of like polarity exhibits homogeneous isotropic eternal cosmologies that are free of cosmological curvature singularities thus eliminating the horizon problem associated with the standard big-bang scenario. Such solutions do however admit dense hot pre-inflationary epochs each with a characteristic scale factor that may be correlated with the dark matter density in the current era of expansion. The model is based on a theory in which a modification of Einsteinian gravity at very short distances can be expressed in terms of the gradient of the Einstein metric and the torsion of a non-Riemannian connection on the bundle of linear frames over spacetime. Indeed we demonstrate that the genesis of the model resides in a remarkable simplification that occurs when one analyses the variational equations associated with a broad class of non-Riemannian actions.

R. W. Tucker; C. Wang

1996-12-09T23:59:59.000Z

144

The Impact of Global Warming and Air Pollution on Patient Visits in the Emergency Department  

E-Print Network (OSTI)

Review The Impact sf Global Warming and 1 Air pollution onair pollution problems and global warming will effect thesites in the human body. Global Warming Global warming goes

Derlet, Robert W

2001-01-01T23:59:59.000Z

145

WHAT'S IN A NAME? GLOBAL WARMING VERSUS CLIMATE CHANGE  

E-Print Network (OSTI)

WHAT'S IN A NAME? GLOBAL WARMING VERSUS CLIMATE CHANGE May 2014 #12;What's In A Name? Global Warming vs. Climate Change 1 TABLE OF CONTENTS PREFACE NATIONAL SURVEY STUDY 2: GLOBAL WARMING VS. CLIMATE CHANGE............................ 10 Is global

Haller, Gary L.

146

Projected range contractions of montane biodiversity under global warming  

Science Journals Connector (OSTI)

...of montane biodiversity under global warming Frank A. La Sorte 1 * Walter...are likely to experience under global warming and highlight the need for additional...extinction risk|geographical range|global warming|mountain biodiversity| 1...

2010-01-01T23:59:59.000Z

147

Warming will affect phytoplankton differently: evidence through a mechanistic approach  

Science Journals Connector (OSTI)

...Although the consequences of global warming in aquatic ecosystems are only...populations in the context of global warming focus mainly on allometric relationships...and it has been proposed that global warming will benefit small-sized phytoplankton...

2011-01-01T23:59:59.000Z

148

Warming alters community size structure and ecosystem functioning  

Science Journals Connector (OSTI)

...37-49, 08003 Barcelona, Spain Global warming can affect all levels of biological...structure|ecosystem functioning|global warming|body mass|size spectrum...The ecological implications of global warming have been documented across many...

2012-01-01T23:59:59.000Z

149

Characteristics of the Dense Plasma Focus Discharge  

Science Journals Connector (OSTI)

The dense plasma focus discharge is produced in a hydromagnetic coaxial plasma accelerator. The final heating and compression of the plasma is accomplished by a partial conversion of the stored magnetic energy residing in the region behind the current sheath to plasma energy. The electrical behavior of the discharge is examined to determine the fraction of the initial energy involved in mechanical sheath motion inductive storage in the accelerator and Ohmic losses associated with the external and plasma discharge. Many analysis of this kind of datum show no definite correlation between the energy converted and neutron production. Presumably this arises from a lack of information as to how the collapse uses this energy and to the amount of plasma ejected from the dense plasma region during the collapse. From soft x?ray pinhole and Schlieren photographs the collapse and the development of the dense plasma is unquestionably a two?dimensional pinch compression.

Joseph W. Mather; Paul J. Bottoms

1968-01-01T23:59:59.000Z

150

D matter  

Science Journals Connector (OSTI)

We study the properties and phenomenology of particlelike states originating from D branes whose spatial dimensions are all compactified. They are nonperturbative states in string theory and we refer to them as D matter. In contrast to other nonperturbative objects such as ’t Hooft–Polyakov monopoles, D-matter states could have perturbative couplings among themselves and with ordinary matter. The lightest D particle (LDP) could be stable because it is the lightest state carrying certain (integer or discrete) quantum numbers. Depending on the string scale, they could be cold dark matter candidates with properties similar to that of WIMPs or wimpzillas. The spectrum of excited states of D matter exhibits an interesting pattern which could be distinguished from that of Kaluza-Klein modes, winding states, and string resonances. We speculate about possible signatures of D matter from ultrahigh energy cosmic rays and colliders.

Gary Shiu and Lian-Tao Wang

2004-06-29T23:59:59.000Z

151

Cloudy Skies: Assessing Public Understanding of Global Warming  

E-Print Network (OSTI)

Surveys show most Americans believe global warming is real. But many advocate delaying action until there is more evidence that warming is harmful. The stock and ...

Sterman, John

2002-06-07T23:59:59.000Z

152

Cloudy Skies: Assessing Public Understanding of Global Warming  

E-Print Network (OSTI)

Surveys show most Americans believe global warming is real. But many advocate delaying action until there is more evidence that warming is harmful. The stock and ...

Sterman, John

2003-02-03T23:59:59.000Z

153

Secretary Moniz Warms Up For Earth Day Pitch | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Warms Up For Earth Day Pitch Secretary Moniz Warms Up For Earth Day Pitch Addthis Speakers Secretary Ernest Moniz Duration :32...

154

Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants - 2013 Peer Review Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants - 2013 Peer Review...

155

Working Fluids Low Global Warming Potential Refrigerants - 2013...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Working Fluids Low Global Warming Potential Refrigerants - 2013 Peer Review Working Fluids Low Global Warming Potential Refrigerants - 2013 Peer Review Emerging Technologies...

156

Imprints of nonthermal Wino dark matter on small-scale structure  

Science Journals Connector (OSTI)

We study how “warm” the Wino dark matter is when it is nonthermally produced by the decays of the gravitino in the early Universe. We clarify the energy distribution of the Wino at the decay of the gravitino and the energy loss process after their production. By solving the Boltzmann equation, we show that a sizable fraction of the Wino dark matter can be warm for the Wino mass mw˜?100–500??GeV. The warmness of the Wino dark matter leaves imprints on the matter power spectra and may provide further insights on the origin of dark matter via the future 21 cm line survey. Our calculations can be applied to other nonthermal Wino production scenarios such as the Wino dark matter produced by the decay of the moduli fields.

Masahiro Ibe; Ayuki Kamada; Shigeki Matsumoto

2013-03-12T23:59:59.000Z

157

Using X-ray free-electron lasers for probing of complex interaction dynamics of ultra-intense lasers with solid matter  

SciTech Connect

We demonstrate the potential of X-ray free-electron lasers (XFEL) to advance the understanding of complex plasma dynamics by allowing for the first time nanometer and femtosecond resolution at the same time in plasma diagnostics. Plasma phenomena on such short timescales are of high relevance for many fields of physics, in particular in the ultra-intense ultra-short laser interaction with matter. Highly relevant yet only partially understood phenomena become directly accessible in experiment. These include relativistic laser absorption at solid targets, creation of energetic electrons and electron transport in warm dense matter, including the seeding and development of surface and beam instabilities, ambipolar expansion, shock formation, and dynamics at the surfaces or at buried layers. In this paper, we focus on XFEL plasma probing for high power laser matter interactions based on quantitative calculations using synthesized data and evaluate the feasibility of various imaging and scattering techniques with special focus on the small angle X-ray scattering technique.

Kluge, T., E-mail: t.kluge@hzdr.de; Huang, L. G.; Metzkes, J.; Bussmann, M. [Helmholtz-Zentrum Dresden-Rossendorf e.V., D-01328 Dresden (Germany)] [Helmholtz-Zentrum Dresden-Rossendorf e.V., D-01328 Dresden (Germany); Gutt, C. [Universität Siegen, D-57068 Siegen (Germany)] [Universität Siegen, D-57068 Siegen (Germany); Schramm, U.; Cowan, T. E. [Helmholtz-Zentrum Dresden-Rossendorf e.V., D-01328 Dresden (Germany) [Helmholtz-Zentrum Dresden-Rossendorf e.V., D-01328 Dresden (Germany); Technische Universität Dresden, D-01062 Dresden (Germany)

2014-03-15T23:59:59.000Z

158

Dark Matters  

ScienceCinema (OSTI)

One of the greatest mysteries in the cosmos is that it is mostly dark.  Astronomers and particle physicists today are seeking to unravel the nature of this mysterious, but pervasive dark matter which has profoundly influenced the formation of structure in the universe.  I will describe the complex interplay between galaxy formation and dark matter detectability and review recent attempts to measure particle dark matter by direct and indirect means.

Joseph Silk

2010-01-08T23:59:59.000Z

159

Testing DM warmness and quantity via the RRG model  

E-Print Network (OSTI)

We use the framework of a recently proposed model of reduced relativistic gas (RRG) to obtain the bounds for $\\Omega$'s of Dark Matter and Dark Energy (in the present case, a cosmological constant), taking into consideration an arbitrary warmness of Dark Matter. Two kind of tests are accounted for, namely the ones coming from the dynamics of the conformal factor of the homogeneous and isotropic metric and also the ones based on linear cosmic perturbations. The RRG model demonstrated its high effectiveness, permitting to explore a large volume in the space of mentioned parameters in a rather economic way. Taking all the tests together, namely Supernova type Ia (Union2 sample), $H(z)$, CMB ($R$ factor), BAO and LSS (2dfGRS data) into account, we confirm that $\\La$CDM is the most favored model. At the same time, for the 2dfGRS data alone we met the possibility of an alternative model with a very small quantity of a Dark Matter. This output is potentially relevant in view of the fact that the LSS is the only test...

Fabris, Julio C; Velasquez-Toribio, A M

2011-01-01T23:59:59.000Z

160

Dense colloidal fluids form denser amorphous sediments  

E-Print Network (OSTI)

Dense colloidal fluids form denser amorphous sediments Shir R. Libera,b , Shai Borohovicha of their randomly packed solid sediments. We demonstrate that the most dilute fluids of colloidal hard spheres form loosely packed sediments, where the volume fraction of the particles approaches in frictional systems

Schofield, Andrew B.

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Dense high temperature ceramic oxide superconductors  

DOE Patents (OSTI)

Dense superconducting ceramic oxide articles of manufacture and methods for producing these articles are described. Generally these articles are produced by first processing these superconducting oxides by ceramic processing techniques to optimize materials properties, followed by reestablishing the superconducting state in a desired portion of the ceramic oxide composite.

Landingham, Richard L. (Livermore, CA)

1993-01-01T23:59:59.000Z

162

Neutron emission studies in dense plasma focus  

Science Journals Connector (OSTI)

Neutron emission studies in dense plasma focus under low pressure and high pressure operation has been carried out. Parametric studies of dynamic behavior of plasma focus also has been made by means of laser holographic interferometry nuclear activation methods and neutron T. O. F detection including pinhole camera. Experimental result was compared with the z?pinch.

M. Yokoyama; Y. Kitagawa; Y. Yamada

1989-01-01T23:59:59.000Z

163

The Downward Influence of Stratospheric Sudden Warmings  

Science Journals Connector (OSTI)

The coupling between the stratosphere and the troposphere following two major stratospheric sudden warmings is studied in the Canadian Middle Atmosphere Model using a nudging technique by which the zonal-mean evolution of the reference sudden ...

Peter Hitchcock; Isla R. Simpson

2014-10-01T23:59:59.000Z

164

Global Warming Effects on Us Hurricane Damage  

E-Print Network (OSTI)

While many studies of the effects of global warming on hurricanes predict an increase in various metrics of Atlantic basin-wide activity, it is less clear that this signal will emerge from background noise in measures of ...

Emanuel, Kerry Andrew

165

Sandia National Laboratories: warm white LED  

NLE Websites -- All DOE Office Websites (Extended Search)

warm white LED Sandia Develops a Synthesis of Quantum Dots that Increases the Quantum Yield to 95.5% On May 23, 2013, in Energy, Energy Efficiency, Materials Science, News, News &...

166

Dark matter  

Science Journals Connector (OSTI)

...just how much dark matter in baryons...have lead to the discovery that a large component of the dark mass in groups...the highest-energy photons and the...to that of the discovery of the microwave...experiments assume the dark matter in the...c) Vacuum energy and the cosmological...

1999-01-01T23:59:59.000Z

167

Innovation and the dynamics of global warming  

Science Journals Connector (OSTI)

Abstract Global warming and the carbon cycle are a dynamic system with positive feedbacks. Fossil fuels are exhaustible resources. These two facts mean that innovation in clean energy technology, rather than mitigating global warming, can lead to a permanently higher temperature path. This paper explores the impact of innovation in the simplest model linking the economic theory of exhaustible resources with positive feedback dynamics in the carbon cycle.

Ralph A. Winter

2014-01-01T23:59:59.000Z

168

Cold-blooded and warm-blooded  

NLE Websites -- All DOE Office Websites (Extended Search)

Cold-blooded and warm-blooded Cold-blooded and warm-blooded Name: Walter Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: What is the fundamental difference between cold-blooded and warm- blooded creatures? I know that reptile blood is a bit different than mammal blood, but is that the difference or is it a difference in the other cells of the body? Replies: Warm blooded refers to an animals ability to maintain its body temperature at a constant level. Cold blooded animal's bodies stay at the temperature of environment around them (more or less). The mechanism by which a warm blooded animal does this is by generating heat, mostly through muscle movement (but by other biochemical processes too). An example of this is shivering. Warm blooded animals also cool themselves off by sweating, panting (and other ways). In mammals the hypothalamic area of the brain has much to do with controlling these reflex processes

169

Nuclear matter to strange matter transition in holographic QCD  

E-Print Network (OSTI)

We construct a simple holographic QCD model to study nuclear matter to strange matter transition. The interaction of dense medium and hadrons is taken care of by imposing the force balancing condition for stable D4/D6/D6 configuration. By considering the intermediate and light flavor branes interacting with baryon vertex homogeneously distributed along R^3 space and requesting the energy minimization, we find that there is a well defined transition density as a function of current quark mass. We also find that as density goes up very high, intermediate (or heavy) and light quarks populate equally as expected from the Pauli principle. In this sense, the effect of the Pauli principle is realized as dynamics of D-branes.

Youngman Kim; Yunseok Seo; Sang-Jin Sin

2009-11-19T23:59:59.000Z

170

Ultra-Efficient and Power-Dense Electric Motors | Department...  

Energy Savers (EERE)

Ultra-Efficient and Power-Dense Electric Motors Ultra-Efficient and Power-Dense Electric Motors electricmotors.pdf More Documents & Publications Advance Patent Waiver W(A)2009-030...

171

Is the basinwide warming in the North Atlantic Ocean related to atmospheric carbon dioxide and global warming?  

E-Print Network (OSTI)

to atmospheric carbon dioxide and global warming? Chunzai Wang1 and Shenfu Dong1,2 Received 31 January 2010 is controversial. Some studies argued that the warming is due to global warming in association with the secular sea surface temperature. Here we show that both global warming and AMO variability make a contribution

Wang, Chunzai

172

Deposition of nanolayers by means of dense plasma focus  

Science Journals Connector (OSTI)

In our preliminary experiments, reported in this paper, dense plasma focus (DPF) device is used for deposition...

M. Chernyshova; I. Ivanova-Stanik; L. Karpi?ski…

2006-10-01T23:59:59.000Z

173

Quark Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Quark Quark Matter in Neutron Stars Prashanth Jaikumar Argonne National Laboratory, (PHY) September 7th, 2006 . - p.1/29 Outline * Neutron stars: observations by a theorist . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) * Is quark matter inside neutron stars ruled out? . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) * Is quark matter inside neutron stars ruled out? ------------------------ * Strange Quark stars: Features and "Findings" . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) * Is quark matter inside neutron stars ruled out? ------------------------

174

Structures for dense, crack free thin films  

DOE Patents (OSTI)

The process described herein provides a simple and cost effective method for making crack free, high density thin ceramic film. The steps involve depositing a layer of a ceramic material on a porous or dense substrate. The deposited layer is compacted and then the resultant laminate is sintered to achieve a higher density than would have been possible without the pre-firing compaction step.

Jacobson, Craig P. (Lafayette, CA); Visco, Steven J. (Berkeley, CA); De Jonghe, Lutgard C. (Lafayette, CA)

2011-03-08T23:59:59.000Z

175

Shear dispersion in dense granular flows  

E-Print Network (OSTI)

We formulate and solve a model problem of dispersion of dense granular materials in rapid shear flow down an incline. The effective dispersivity of the depth-averaged concentration of the dispersing powder is shown to vary as the P\\'eclet number squared, as in classical Taylor--Aris dispersion of molecular solutes. An extensions to generic shear profiles is presented, and possible applications to industrial and geological granular flows are noted.

Christov, Ivan C

2014-01-01T23:59:59.000Z

176

Screening masses in thermal and dense medium  

E-Print Network (OSTI)

Screening masses of different hadronic states are studied in thermal and dense medium on lattice. It has been found that screening masses increase with the temperature. In deconfinement phase, chemical potential enhances the screening masses. We use the normalization with respect to lowest Matsubara frequency to characterize dissolving of hadronic bound states at high temperatures. It has been found that different hadronic states have different dissolving temperatures and their survivals are considerably improved at finite chemical potentials.

A. Tawfik

2006-05-29T23:59:59.000Z

177

Electrical Conductivity of a Dense Plasma  

Science Journals Connector (OSTI)

The ac electrical conductivity of a dense plasma is studied by use of reflectivity measurements on the rear surface of a laser-irradiated planar target. The results show general agreement with theory in which a minimum collision mean free path is assumed, yielding correspondingly a minimum conductivity. However, the results also suggest that the minimum mean free path is greater than the interatomic radius.

A. Ng, D. Parfeniuk, P. Celliers, L. DaSilva, R. M. More, and Y. T. Lee

1986-09-29T23:59:59.000Z

178

1 - The Challenges of Global Warming Research  

Science Journals Connector (OSTI)

Abstract This chapter focuses on two items. First, it addresses the issue of global warming in a hostile political environment. Second, it looks at what might be called the basic research element connecting global warming to crime: research on the relationship between crime and weather. The first item addresses the nature of research itself—how do we recognize when research is any good? There is a great deal of bad and misleading research on global warming. How do we know which is bad and which is good? The chapter begins with a discussion of three articles on Greenland melt-off, each with quite different implications, and discusses how to tell which is a legitimate research summary and which is not. It then provides a discussion of what constitutes good research generally and what one should look for when research is poorly done or intentionally misleading. For the second item, global warming and crime, we begin with a discussion of the difference between climate and weather. Much of this section is a review of Cohn’s work on temperature, crime, and violent crime. We also discuss the Ranson model, which provides a good description of the way in which crime can be modeled and predicted using data and research methods derived from the global warming literature.

John P. Crank; Linda S. Jacoby

2015-01-01T23:59:59.000Z

179

Equilibration processes in the Warm-Hot Intergalactic Medium  

E-Print Network (OSTI)

The Warm-Hot Intergalactic Medium (WHIM) is thought to contribute about 40-50 % to the baryonic budget at the present evolution stage of the universe. The observed large scale structure is likely to be due to gravitational growth of density fluctuations in the post-inflation era. The evolving cosmic web is governed by non-linear gravitational growth of the initially weak density fluctuations in the dark energy dominated cosmology. Non-linear structure formation, accretion and merging processes, star forming and AGN activity produce gas shocks in the WHIM. Shock waves are converting a fraction of the gravitation power to thermal and non-thermal emission of baryonic/leptonic matter. They provide the most likely way to power the luminous matter in the WHIM. The plasma shocks in the WHIM are expected to be collisionless. Collisionless shocks produce a highly non-equilibrium state with anisotropic temperatures and a large differences in ion and electron temperatures. We discuss the ion and electron heating by the collisionless shocks and then review the plasma processes responsible for the Coulomb equilibration and collisional ionisation equilibrium of oxygen ions in the WHIM. MHD-turbulence produced by the strong collisionless shocks could provide a sizeable non-thermal contribution to the observed Doppler parameter of the UV line spectra of the WHIM.

A. M. Bykov; F. B. S. Paerels; V. Petrosian

2008-01-07T23:59:59.000Z

180

Hadronic matter and rapidly rotating compact stars  

SciTech Connect

In part one of this paper the authors review the present status of neutron star matter calculations, and introduce a representative collection of realistic nuclear equations of state which are derived for different assumptions about the physical behavior of dense matter (baryon populations, pion condensation, possible transition of baryon matter to quark matter). Part two deals with the theoretical determination of the minimum possible rotational periods of neutron stars, performed in the framework of general relativity, whose knowledge serves to distinguish between pulsars that can be understood as rotating neutron stars and those that cannot. Likely candidates for the latter are hypothetical strange stars. Their properties are discussed in the third part of this contribution.

Weber, F.; Kettner, C. [Univ. of Munich (Germany). Inst. for Theoretical Physics; Glendenning, N.K. [Lawrence Berkeley Lab., CA (United States). Nuclear Science Div.

1994-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Advertising, economic development, and global warming  

Science Journals Connector (OSTI)

Abstract Advertising is tied to global warming through an endogenous growth model. The model allows for the possibility that the environment can become a source rather than a sink for greenhouse gases. Optimal control analysis of the model shows that a feasible steady state is possible for which the environment remains a sink, and identifies a sufficient condition for such to be the case. Comparative-static analysis shows that, for sufficiently small values of steady-state anthropogenic greenhouse gas concentration, global surface temperature and advertising in steady state are negative functions of parameters that measure the damaging effects of global warming.

Gary M. Erickson

2014-01-01T23:59:59.000Z

182

Electrical and thermal conductivities in dense plasmas  

SciTech Connect

Expressions for the electrical and thermal conductivities in dense plasmas are derived combining the Chester-Thellung-Kubo-Greenwood approach and the Kramers approximation. The infrared divergence is removed assuming a Drude-like behaviour. An analytical expression is obtained for the Lorenz number that interpolates between the cold solid-state and the hot plasma phases. An expression for the electrical resistivity is proposed using the Ziman-Evans formula, from which the thermal conductivity can be deduced using the analytical expression for the Lorenz number. The present method can be used to estimate electrical and thermal conductivities of mixtures. Comparisons with experiment and quantum molecular dynamics simulations are done.

Faussurier, G., E-mail: gerald.faussurier@cea.fr; Blancard, C.; Combis, P.; Videau, L. [CEA, DAM, DIF, F-91297 Arpajon (France)

2014-09-15T23:59:59.000Z

183

Electrical conductivity of dense metal plasmas  

Science Journals Connector (OSTI)

The composition of dense metal plasmas is calculated considering higher ionization stages of the atoms. A system of coupled mass action laws is solved self-consistently taking into account medium corrections which lead to pressure ionization at high densities. The electrical conductivity is calculated within linear response theory. The interactions between the various species are treated on T matrix level. The numerical results for the electrical conductivity are in reasonable agreement with new experimental data for nonideal Al and Cu plasmas. Comparison with other theories is performed.

Ronald Redmer

1999-01-01T23:59:59.000Z

184

Dense plasma properties from shock wave experiments  

Science Journals Connector (OSTI)

A review is presented of the novel experimental results of investigation of physical properties of the coupled dense plasmas generated as a result of shock compression up to megabar pressure range. High-energy plasma states were generated by single and multiple shock compression. The highly time-resolved diagnostics permit us to measure thermodynamical, electrophysical and optical properties of high pressure condensed plasmas in the broad phase diagram region—from the compressed condensed solid state up to the low density gas range, including strongly coupled plasma and metal–insulator transition regions.

V B Mintsev; V E Fortov

2006-01-01T23:59:59.000Z

185

ASC-eNews-December-2008.indd  

National Nuclear Security Administration (NNSA)

the impact of impurities on various thermodynamic properties in warm-dense-matter, thermonuclear burn, and mix. These algorithms are being used to study Thermonuclear Burn...

186

Global Climate Change: Why Understanding the Scientific Enterprise Matters  

E-Print Network (OSTI)

Global Climate Change: Why Understanding the Scientific Enterprise Matters Ellen MosleyPolar/ByrdPolarhttp://bprc.osu.edu/ Understanding Climate Change Risks and Identifying Opportunities for Mitigation & Adaptation in Ohio Ohio State University, May 15, 2014 #12;Key Points Earth's climate is changing - the world is warming ­ that debate

Howat, Ian M.

187

Realistic Mitigation Options for Global Warming  

Science Journals Connector (OSTI)

...uncertainty (48). The energy modeling results that employ other methods...concerns that environmental control could impede economic development...Sources and Guidelines for Control of Existing Sources: Municipal...100% under present U.S. laws) but to a lower global warming...

Edward S. Rubin; Richard N. Cooper; Robert A. Frosch; Thomas H. Lee; Gregg Marland; Arthur H. Rosenfeld; Deborah D. Stine

1992-07-10T23:59:59.000Z

188

Editorial – The Global Warming Fight is “Bringing Sexy Back,” Are You Ready?  

E-Print Network (OSTI)

2006, September 25). Is global warming raising a tempest?or her behavior towards global warming in 2007. *Timberlake,Editorial: The Global Warming Fight is “Bringing Sexy

Jankowska, Marta Maja

2006-01-01T23:59:59.000Z

189

Review: Air Pollution and Global Warming: History, Science, and Solutions, 2nd ed.  

E-Print Network (OSTI)

Air Pollution and Global Warming: History, Science, andZ. Air Pollution and Global Warming: History, Science, andAir Pollution and Global Warming: History, Science, and

Laberge, Yves

2013-01-01T23:59:59.000Z

190

Is the Ozone Depletion Regime a Model for an Emerging Regime on Global Warming?  

E-Print Network (OSTI)

the for- mation of a global warming regime produces a highlydepletion and the global warming regimes was recognized byan Emerging Regime on Global Warming? by Winfried Lang I.

Lang, Winfried

1991-01-01T23:59:59.000Z

191

Climate Feedback Analysis of the GFDL IPCC AR4 Global Warming Simulation.  

E-Print Network (OSTI)

?? Both observed and modeled global warming pattern shows a large surface polar warming and a large upper atmospheric warming in the tropics. This pattern… (more)

Castet, Christelle Clemence

2009-01-01T23:59:59.000Z

192

Dynamics of Kr in dense clathrate hydrates  

Science Journals Connector (OSTI)

The dynamics of Kr atoms as guests in dense clathrate hydrate structures are investigated using site specific Kr83 nuclear resonant inelastic x-ray scattering (NRIXS) spectroscopy in combination with molecular dynamics simulations. The dense structure H hydrate and filled-ice structures are studied at high pressures in a diamond anvil high-pressure cell. The dynamics of Kr in the structure H clathrate hydrate quench recovered at 77 K is also investigated. The Kr phonon density of states obtained from the experimental NRIXS data are compared with molecular dynamics simulations. The temperature and pressure dependence of the phonon spectra provide details of the Kr dynamics in the clathrate hydrate cages. Comparison with the dynamics of Kr atoms in the low-pressure structure II obtained previously was made. The Lamb-Mossbauer factor obtained from NRIXS experiments and molecular dynamics calculations are in excellent agreement and are shown to yield unique information on the strength and temperature dependence of guest-host interactions.

D. D. Klug; J. S. Tse; J. Y. Zhao; W. Sturhahn; E. E. Alp; C. A. Tulk

2011-05-25T23:59:59.000Z

193

Solids flow rate measurement in dense slurries  

SciTech Connect

Accurate and rapid flow rate measurement of solids in dense slurries remains an unsolved technical problem, with important industrial applications in chemical processing plants and long-distance solids conveyance. In a hostile two-phase medium, such a measurement calls for two independent parameter determinations, both by non-intrusive means. Typically, dense slurries tend to flow in laminar, non-Newtonian mode, eliminating most conventional means that usually rely on calibration (which becomes more difficult and costly for high pressure and temperature media). These issues are reviewed, and specific solutions are recommended in this report. Detailed calculations that lead to improved measuring device designs are presented for both bulk density and average velocity measurements. Cross-correlation, chosen here for the latter task, has long been too inaccurate for practical applications. The cause and the cure of this deficiency are discussed using theory-supported modeling. Fluid Mechanics are used to develop the velocity profiles of laminar non-Newtonian flow in a rectangular duct. This geometry uniquely allows the design of highly accurate `capacitive` devices and also lends itself to gamma transmission densitometry on an absolute basis. An absolute readout, though of less accuracy, is also available from a capacitive densitometer and a pair of capacitive sensors yields signals suitable for cross-correlation velocity measurement.

Porges, K.G.; Doss, E.D.

1993-09-01T23:59:59.000Z

194

Transport and optical properties of warm dense aluminum in the two-temperature regime: Ab initio calculation and semiempirical approximation  

SciTech Connect

This work is devoted to the investigation of transport and optical properties of liquid aluminum in the two-temperature case. At first optical properties, static electrical, and thermal conductivities were obtained in the ab initio calculation which is based on the quantum molecular dynamics, density functional theory, and the Kubo-Greenwood formula. Then the semiempirical approximation was constructed based on the results of our simulation. This approximation yields the dependences ?{sub 1{sub D{sub C}}}?1/T{sub i}{sup 0.25} and K?T{sub e}/T{sub i}{sup 0.25} for the static electrical conductivity and thermal conductivity, respectively, for liquid aluminum at ??=?2.70?g/cm{sup 3}, 3?kK???T{sub i}???T{sub e}???20?kK. Our results are well described by the Drude model with the effective relaxation time ??T{sub i}{sup ?0.25}. We have considered a number of other models for the static electrical and thermal conductivities of aluminum, they are all reduced in the low-temperature limit to the Drude model with different expressions for the relaxation time ?. Our results are not consistent with the models in which ??T{sub i}{sup ?1} and support the models which use the expressions with the slower decrease of the relaxation time.

Knyazev, D. V. [Joint Institute for High Temperatures RAS, Izhorskaya 13 Bldg. 2, Moscow 125412 (Russian Federation); Moscow Institute of Physics and Technology (State University), Institutskiy per. 9, Dolgoprudny, Moscow Region 141700 (Russian Federation); State Scientific Center of the Russian Federation—Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute,” Bolshaya Cheremushkinskaya 25, 117218 Moscow (Russian Federation); Levashov, P. R. [Joint Institute for High Temperatures RAS, Izhorskaya 13 Bldg. 2, Moscow 125412 (Russian Federation); Tomsk State University, Lenin Prospekt 36, Tomsk 634050 (Russian Federation)

2014-07-15T23:59:59.000Z

195

ALMA Observations of Warm Dense Gas in NGC 1614 --- Breaking of Star Formation Law in the Central kpc  

E-Print Network (OSTI)

We present ALMA Cycle-0 observations of the CO (6-5) line emission and of the 435um dust continuum emission in the central kpc of NGC 1614, a local luminous infrared galaxy (LIRG) at a distance of 67.8 Mpc (1 arcsec = 329 pc). The CO emission is well resolved by the ALMA beam (0".26 x 0".20) into a circum-nuclear ring, with an integrated flux of f_{CO(6-5)} = 898 (+-153) Jy km/s, which is 63(+-12)% of the total CO(6-5) flux measured by Herschel. The molecular ring, located between 100pc dispersion of 40 km/s. These knots are associated with strong star formation regions with \\Sigma_{SFR} 100 M_\\sun/yr/kpc^{2} and \\Sigma_{Gas} 1.0E4 M_\\sun/pc^{2}. The non-detections of the nucleus in both the CO (6-5) line emission and the 435um continuum rule out, with relatively high confidence, a Compton-thick AGN in NGC 1614. Comparisons with radio continuum emission show a strong deviation fro...

Xu, C K; Lu, N; Gao, Y; Diaz-Santos, T; Herrero-Illana, R; Meijerink, R; Privon, G; Zhao, Y -H; Evans, A S; König, S; Mazzarella, J M; Aalto, S; Appleton, P; Armus, L; Charmandaris, V; Chu, J; Haan, S; Inami, H; Murphy, E J; Sanders, D B; Schulz, B; van der Werf, P

2014-01-01T23:59:59.000Z

196

Building Technologies Office: Low-Global Warming Potential Refrigerants  

NLE Websites -- All DOE Office Websites (Extended Search)

Low-Global Warming Low-Global Warming Potential Refrigerants Research Project to someone by E-mail Share Building Technologies Office: Low-Global Warming Potential Refrigerants Research Project on Facebook Tweet about Building Technologies Office: Low-Global Warming Potential Refrigerants Research Project on Twitter Bookmark Building Technologies Office: Low-Global Warming Potential Refrigerants Research Project on Google Bookmark Building Technologies Office: Low-Global Warming Potential Refrigerants Research Project on Delicious Rank Building Technologies Office: Low-Global Warming Potential Refrigerants Research Project on Digg Find More places to share Building Technologies Office: Low-Global Warming Potential Refrigerants Research Project on AddThis.com... About Take Action to Save Energy

197

Global Warming and Water Management: Water Allocation and Project Evaluation  

Science Journals Connector (OSTI)

This paper explores the sensitivity of the benefits of alternative water allocation schemes and of project evaluation to global warming. If global warming shifts the mean of annual water supplies, ... . Because b...

Robert Mendelsohn; Lynne L. Bennett

1997-09-01T23:59:59.000Z

198

Central issues in the negotiations on limiting greenhouse warming  

E-Print Network (OSTI)

The three central questions in the international negotiations on greenhouse warming are: (1) How much global warming should be tolerated? (2) How much responsibility for past emissions should be assigned to present ...

Eckaus, Richard S.

1992-01-01T23:59:59.000Z

199

Comparing the effects of greenhouse gas emissions on global warming  

E-Print Network (OSTI)

Policies dealing with global warming require a measure of the effects of the emissions of greenhouse gases that create different magnitudes of instantaneous radiative forcing and have different lifetimes. The Global Warming ...

Eckaus, Richard S.

1990-01-01T23:59:59.000Z

200

Magnetic properties of dense holographic QCD  

E-Print Network (OSTI)

We investigate the Sakai-Sugimoto model at nonzero baryon chemical potential in a background magnetic field both in the confined phase and in the deconfined phase with restored chiral symmetry. In this case the 8-brane Chern-Simons term becomes important. In the confined phase it generates a gradient of the pseudo-scalar "pion", which carries a non-vanishing baryon charge. Above a critical value of the chemical potential there is a second order phase transition to a mixed phase which includes also ordinary baryonic matter. However, at fixed baryon charge density the matter is purely "pion"-gradient above a critical magnetic field. In the deconfined chiral-symmetric phase at nonzero chemical potential the magnetic field induces an axial current. We also compute the magnetization of the baryonic matter and find that it is paramagnetic in all three phases but with nonlinear behavior at large magnetic field.

Oren Bergman; Gilad Lifschytz; Matthew Lippert

2008-06-02T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Eutrophication of ancient Lake Ohrid: Global warming amplifies ...  

Science Journals Connector (OSTI)

Eutrophication of ancient Lake Ohrid: Global warming amplifies detrimental effects of increased nutrient inputs. Matzinger, Andreas, Martin Schmid, Elizabeta

202

Separating Signal from Noise in Global Warming Bert W. Rust  

E-Print Network (OSTI)

Separating Signal from Noise in Global Warming Bert W. Rust Reprinted from the CD Rust, B. W. (2003) "Separating Signal from Noise in Global Warming," Computing Science and Statistics, 35, 263-277. ­ or ­ Rust, B. W. (2003) "Separating Signal from Noise in Global Warming," Computing Science and Statistics, 35

Rust, Bert W.

203

GLOBAL WARMING: THE PSYCHOLOGY OF LONG TERM RISK Guest Editorial  

E-Print Network (OSTI)

GLOBAL WARMING: THE PSYCHOLOGY OF LONG TERM RISK Guest Editorial Beyond its objective basis in natural science, understanding, discussion, and res- olution of the policy issue labeled "global warming the global warming problem. In public discussion, natu- ral scientists tend to frame the issue through

Todorov, Alex

204

Possible global warming futures Minh Ha-Duong  

E-Print Network (OSTI)

Possible global warming futures Minh Ha-Duong Minh.Ha.Duong@cmu.edu CNRS, France HDGC, Carnegie Mellon Possible global warming futures ­ p.1/36 #12;SRES: Forecasts or scenarios? +5.5 C in 2100 the controversy using imprecise probabilities, a more general information theory. . . Possible global warming

205

The Logic of Global Warming A bitter pill  

E-Print Network (OSTI)

The Logic of Global Warming A bitter pill Vaughan Pratt Stanford University June 23, 2011 Vaughan PrattStanford University () The Logic of Global WarmingA bitter pill June 23, 2011 1 / 1 What is climate population growth. 2. Accumulation of hazardous materials: lead, mercury, CFCs, . . . 3. Global warming

Pratt, Vaughan

206

Global warming and hurricane intensity and frequency: The debate continues  

E-Print Network (OSTI)

Global warming and hurricane intensity and frequency: The debate continues Megan Mc of these changes. Some scientists believe that global warming and increased sea surface temperatures are to blame, global warming and increased sea surface temperatures do appear to have influenced hurricane frequency

Kareem, Ahsan

207

Global Warming Time Bomb:* Actions Needed to Avert Disaster  

E-Print Network (OSTI)

Global Warming Time Bomb:* Actions Needed to Avert Disaster James Hansen 26 October 2009 Club statements relating to policy are personal opinion Global Warming Status 1. Knowledge Gap Between - What Benefits of Solution Despite the publicity that global warming has received, there is a large gap between

Hansen, James E.

208

Measuring evolutionary responses to global warming: cautionary lessons from Drosophila  

E-Print Network (OSTI)

Measuring evolutionary responses to global warming: cautionary lessons from Drosophila FRANCISCO. Understanding evolutionary responses to global climate warming can be daunt- ingly complex. But, primarily of the magnitude of long-term responses to global warming; standardising by equivalent seasonal tem- perature

Rodríguez, Miguel Ángel

209

Communicating Dangers and Opportunities in Global Warming 13 December Draft  

E-Print Network (OSTI)

Communicating Dangers and Opportunities in Global Warming 13 December Draft James Hansen American: "Subversion of Public Affairs Chart 7: The Global Warming Story C. Tenets of a Democracy: "An Informed Public, not as a spokesman for NASA There is a huge gap between what is understood about global warming and what is known

Hansen, James E.

210

Carbon Dioxide, Global Warming, and Michael Crichton's "State of Fear"  

E-Print Network (OSTI)

Carbon Dioxide, Global Warming, and Michael Crichton's "State of Fear" Bert W. Rust Mathematical- tioned the connection between global warming and increasing atmospheric carbon dioxide by pointing out of these plots to global warming have spilled over to the real world, inviting both praise [4, 17] and scorn [15

Rust, Bert W.

211

Global warming and body mass decline in Israeli passerine birds  

Science Journals Connector (OSTI)

7 May 2001 research-article Global warming and body mass decline in Israeli...University, , Tel Aviv 69978, Israel Global warming may affect the physiology, distributions...mass and tarsus length are due to global warming and also in accordance with Bergmann's...

2001-01-01T23:59:59.000Z

212

Genetic shift in photoperiodic response correlated with global warming  

E-Print Network (OSTI)

Genetic shift in photoperiodic response correlated with global warming William E. Bradshaw observed in insects, birds, amphibians, and plants associated with global warm- ing during the latter half- tent with an adaptive evolutionary response to recent global warming. The latter half of the 20th

Cochran-Stafira, D. Liane

213

Global warming and United States landfalling hurricanes Chunzai Wang1  

E-Print Network (OSTI)

Global warming and United States landfalling hurricanes Chunzai Wang1 and Sang-Ki Lee2 Received 18] A secular warming of sea surface temperature occurs almost everywhere over the global ocean. Here we use observational data to show that global warming of the sea surface is associated with a secular increase

Wang, Chunzai

214

Global warming and body mass decline in Israeli passerine birds  

E-Print Network (OSTI)

Global warming and body mass decline in Israeli passerine birds Yoram Yom-Tov Department of Zoology,Tel Aviv University,Tel Aviv 69978, Israel ( yomtov@post.tau.ac.il) Global warming may a¡ect the physiology in body mass and tarsus length are due to global warming and also in accordance with Bergmann's rule

Yom-Tov, Yoram

215

Global warming triggers the loss of a key Arctic refugium  

Science Journals Connector (OSTI)

...research-article Research articles 1001 69 60 Global warming triggers the loss of a key Arctic...change that is being driven by global warming. In stark contrast to the amplified...planet's last Arctic refugia from global warming, largely because of the moderating...

2013-01-01T23:59:59.000Z

216

Observationally based assessment of polar amplification of global warming  

E-Print Network (OSTI)

Observationally based assessment of polar amplification of global warming Igor V. Polyakov,1) are similar, and do not support the predicted polar amplification of global warming. The possible moderating amplification of global warming. Intrinsic arctic variability obscures long-term changes, limiting our ability

Bhatt, Uma

217

Warm Standby in Hierarchically Structured Process-Control Programs  

E-Print Network (OSTI)

are identified and the reliability of a system using warm standby is evaluated and compared with that of hot standby. Our analysis indicates that the warm standby scheme is particularly suitable for long are possible. The feasibility of warm standby is demonstrated with a simulated chemical batch reactor system

Chen, Ing-Ray

218

Ammonia Capture in Porous Organic Polymers Densely Functionalized...  

NLE Websites -- All DOE Office Websites (Extended Search)

Ammonia Capture in Porous Organic Polymers Densely Functionalized with Brnsted Acid Groups Previous Next List Jeffrey F. Van Humbeck, Thomas M. McDonald, Xiaofei Jing, Brian M....

219

LIMITATIONS ON MEASURING A TRANSVERSE PROFILE OF ULTRA- DENSE...  

NLE Websites -- All DOE Office Websites (Extended Search)

LIMITATIONS ON MEASURING A TRANSVERSE PROFILE OF ULTRA- DENSE ELECTRON BEAMS WITH SCINTILLATORS A. Murokh * , J. Rosenzweig, University of California, Los Angeles, CA 90095-1547,...

220

Oxygen ion-conducting dense ceramic  

DOE Patents (OSTI)

Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr.sub..alpha. (Fe.sub.1-x Co.sub.x).sub..alpha.+.beta. O.sub..delta. where x is a number in a range from 0.01 to about 1, .alpha. is a number in a range from about 1 to about 4, .beta. is a number in a range upward from 0 to about 20, and .delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.

Balachandran, Uthamalingam (Hinsdale, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Morissette, Sherry L. (Las Cruces, NM); Pei, Shiyou (Naperville, IL)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Oxygen ion-conducting dense ceramic  

DOE Patents (OSTI)

Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr.sub..alpha. (Fe.sub.1-x Co.sub.x).sub..alpha.+.beta. O.sub..delta. where x is a number in a range from 0.01 to about 1, .alpha. is a number in a range from about 1 to about 4, .beta. is a number in a range upward from 0 to about 20, and .delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.

Balachandran, Uthamalingam (Hinsdale, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Morissette, Sherry L. (Las Cruces, NM); Pei, Shiyou (Naperville, IL)

1996-01-01T23:59:59.000Z

222

Hydromagnetic Instabilities in the Dense Plasma Focus  

Science Journals Connector (OSTI)

Coaxial discharges of the Mather type owe their performance to the rapid collapse of a noncylindrical current sheath into a dense plasma focus. The lifetime of the resulting fountainlike pinch column appears to be governed by the formation of sausage instabilities; however typical estimates of the buildup time for m?=?0 hydromagnetic instabilities in cylindrical columns are at least 5–10 times shorter than the observed lifetimes (?50 nsec). In order to study the effect of pinch curvature a hydromagnetic stability analysis is performed in terms of the Bernstein energy principle expressed in curvilinear coordinates. A necessary stability condition for curved pinches with no axial magnetic fields turns out to be the presence of a delta?function current singularity on the axis in accordance with hard?core pinch measurements of Colgate. For noncylindrical axisymmetric pinches of finite curvature and large aspect ratio the m?=?0 instability is found to grow about 10 times slower than the corresponding cylindrical pinch case.

G. G. Comisar

1969-01-01T23:59:59.000Z

223

Ion Heating in the Dense Plasma Focus  

Science Journals Connector (OSTI)

The collapse phase of a dense plasma focus gun operating in deuterium was studied using streak photography and time resolved x?ray and neutron measuring techniques. The streak photographs showing the radial motion of the luminous front at various axial positions indicate a collapsing luminous front at the time of the current collapse followed by an expanding front and a recompression. The luminosity then disappears for a period of several hundred nanoseconds during which time the neutrons are emitted. Estimates of shock heating and magnetic compressional heating were made from the streak pictures and a calculation of plasma heating due to viscous forces arising from axial motion of the plasma was carried out. The effects of shock heating magnetic compressional heating and viscous heating are shown to be sufficient to produce an ion temperature of several kilovolts.

A. J. Toepfer; D. R. Smith; E. H. Beckner

1971-01-01T23:59:59.000Z

224

Nonlinear extraordinary wave in dense plasma  

SciTech Connect

Conditions for the propagation of a slow extraordinary wave in dense magnetized plasma are found. A solution to the set of relativistic hydrodynamic equations and Maxwell’s equations under the plasma resonance conditions, when the phase velocity of the nonlinear wave is equal to the speed of light, is obtained. The deviation of the wave frequency from the resonance frequency is accompanied by nonlinear longitudinal-transverse oscillations. It is shown that, in this case, the solution to the set of self-consistent equations obtained by averaging the initial equations over the period of high-frequency oscillations has the form of an envelope soliton. The possibility of excitation of a nonlinear wave in plasma by an external electromagnetic pulse is confirmed by numerical simulations.

Krasovitskiy, V. B., E-mail: krasovit@mail.ru [Russian Academy of Sciences, Keldysh Institute of Applied Mathematics (Russian Federation); Turikov, V. A. [Russian University of Peoples’ Friendship (Russian Federation)] [Russian University of Peoples’ Friendship (Russian Federation)

2013-10-15T23:59:59.000Z

225

Global Warming Mitigation Investments Optimized under Uncertainty  

NLE Websites -- All DOE Office Websites (Extended Search)

Global Warming Mitigation Investments Optimized under Uncertainty Global Warming Mitigation Investments Optimized under Uncertainty Speaker(s): Hermann Held Date: July 9, 2010 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Thomas McKone The Copenhagen Accord (2009) recognizes that 'the increase in global temperature should be below 2 degrees Celsius' (compared to pre-industrial levels, '2° target'). In recent years, energy economics have derived welfare-optimal investment streams into low-emission energy mixes and associated costs. According to our analyses, auxiliary targets that are in line with the 2° target could be achieved at relatively low costs if energy investments were triggered rather swiftly. While such analyses assume 'perfect foresight' of a benevolent 'social planner', an accompanying suite of experiments explicitly

226

Decarbonization and Sequestration for Mitigating Global Warming  

NLE Websites -- All DOE Office Websites (Extended Search)

DECARBONIZATION AND SEQUESTRATION FOR DECARBONIZATION AND SEQUESTRATION FOR MITIGATING GLOBAL WARMING M. Steinberg (msteinbe@bnl.gov); 631-344-3036 Brookhaven National Laboratory 12 South Upton Street Upton, NY 11973-5000, USA ABSTRACT Mitigating the global warming greenhouse effect while maintaining a fossil fuel economy, requires improving efficiency of utilization of fossil fuels, use of high hydrogen content fossil fuels, decarbonization of fossil fuels, and sequestering of carbon and CO 2 applied to all the sectors of the economy, electric power generation, transportation, and industrial, and domestic power and heat generation. Decarbonization means removal of carbon as C or CO 2 either before or after fossil fuel combustion and sequestration means disposal of the recovered C or CO 2 including its utilization. Removal and recovery of CO

227

The Science and Ethics of Global warming Global warming has become one of the central political and scientific issues of  

E-Print Network (OSTI)

The Science and Ethics of Global warming Global warming has become one of the central political of the considerations that might govern our response to global warming, including a discussion of some new developments of the atmosphere is to reduce the efficiency with which the earth's surface radiates away the energy it absorbs

Kirk-Davidoff, Daniel

228

Computer modeling of the global warming effect  

SciTech Connect

The state of knowledge of global warming will be presented and two aspects examined: observational evidence and a review of the state of computer modeling of climate change due to anthropogenic increases in greenhouse gases. Observational evidence, indeed, shows global warming, but it is difficult to prove that the changes are unequivocally due to the greenhouse-gas effect. Although observational measurements of global warming are subject to ``correction,`` researchers are showing consistent patterns in their interpretation of the data. Since the 1960s, climate scientists have been making their computer models of the climate system more realistic. Models started as atmospheric models and, through the addition of oceans, surface hydrology, and sea-ice components, they then became climate-system models. Because of computer limitations and the limited understanding of the degree of interaction of the various components, present models require substantial simplification. Nevertheless, in their present state of development climate models can reproduce most of the observed large-scale features of the real system, such as wind, temperature, precipitation, ocean current, and sea-ice distribution. The use of supercomputers to advance the spatial resolution and realism of earth-system models will also be discussed.

Washington, W.M. [National Center for Atmospheric Research, Boulder, CO (United States)

1993-12-31T23:59:59.000Z

229

AVOIDING FAMILIES AND TUKEY FUNCTIONS ON THE NOWHERE DENSE IDEAL  

E-Print Network (OSTI)

AVOIDING FAMILIES AND TUKEY FUNCTIONS ON THE NOWHERE DENSE IDEAL SLAWOMIR SOLECKI AND STEVO TODORCEVIC Abstract. We investigate Tukey functions from the ideal of all closed nowhere dense subsets of 2N . In particular, we answer an old question of Isbell and Fremlin by showing that this ideal is not Tukey reducible

Solecki, Slawomir

230

Packing frustration in dense confined fluids  

E-Print Network (OSTI)

Packing frustration for confined fluids, i.e., the incompatibility between the preferred packing of the fluid particles and the packing constraints imposed by the confining surfaces, is studied for a dense hard-sphere fluid confined between planar hard surfaces at short separations. The detailed mechanism for the frustration is investigated via an analysis of the anisotropic pair distributions of the confined fluid, as obtained from integral equation theory for inhomogeneous fluids at pair correlation level within the anisotropic Percus-Yevick approximation. By examining the mean forces that arise from interparticle collisions around the periphery of each particle in the slit, we calculate the principal components of the mean force for the density profile - each component being the sum of collisional forces on a particle's hemisphere facing either surface. The variations of these components with the slit width give rise to rather intricate changes in the layer structure between the surfaces, but, as shown in this paper, the basis of these variations can be easily understood qualitatively and often also semi-quantitatively. It is found that the ordering of the fluid is in essence governed locally by the packing constraints at each single solid-fluid interface. A simple superposition of forces due to the presence of each surface gives surprisingly good estimates of the density profiles, but there remain nontrivial confinement effects that cannot be explained by superposition, most notably the magnitude of the excess adsorption of particles in the slit relative to bulk.

Kim Nygård; Sten Sarman; Roland Kjellander

2014-09-04T23:59:59.000Z

231

Global Warming and Caspian Sea Level Fluctuations  

E-Print Network (OSTI)

Coastal regions have a high social, economical and environmental importance. Due to this importance the sea level fluctuations can have many bad consequences. In this research the correlation between the increasing trend of temperature in coastal stations due to Global Warming and the Caspian Sea level has been established. The Caspian Sea level data has been received from the Jason-1 satellite. It was resulted that the monthly correlation between the temperature and sea level is high and also positive and almost the same for all the stations. But the yearly correlation was negative. It means that the sea level has decreased by the increase in temperature.

Ardakanian, Reza

2013-01-01T23:59:59.000Z

232

Warm inflation in presence of magnetic fields  

SciTech Connect

We present preliminary results on the possible effects that primordial magnetic fields can have for a warm inflation scenario, based on global supersymmetry, with a new-inflation-type potential. This work is motivated by two considerations: first, magnetic fields seem to be present in the universe on all scales which rises de possibility that they could also permeate the early universe; second, the recent emergence of inflationary models where the inflaton is not assumed to be isolated but instead it is taken as an interacting field, even during the inflationary expansion. The effects of magnetic fields are included resorting to Schwinger's proper time method.

Piccinelli, Gabriella [Centro Tecnológico, FES Aragón, Universidad Nacional Autónoma de México, Avenida Rancho Seco S/N, Bosques de Aragón, Nezahualcóyotl, Estado de México 57130 (Mexico)] [Centro Tecnológico, FES Aragón, Universidad Nacional Autónoma de México, Avenida Rancho Seco S/N, Bosques de Aragón, Nezahualcóyotl, Estado de México 57130 (Mexico); Sánchez, Ángel [Department of Physics, University of Texas at El Paso, El Paso, Texas 79968 (United States)] [Department of Physics, University of Texas at El Paso, El Paso, Texas 79968 (United States); Ayala, Alejandro; Mizher, Ana Julia [Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70-543, México Distrito Federal 04510 (Mexico)] [Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70-543, México Distrito Federal 04510 (Mexico)

2013-07-23T23:59:59.000Z

233

Storing images in warm atomic vapor  

E-Print Network (OSTI)

Reversible and coherent storage of light in atomic medium is a key-stone of future quantum information applications. In this work, arbitrary two-dimensional images are slowed and stored in warm atomic vapor for up to 30 $\\mu$s, utilizing electromagnetically induced transparency. Both the intensity and the phase patterns of the optical field are maintained. The main limitation on the storage resolution and duration is found to be the diffusion of atoms. A techniqueanalogous to phase-shift lithography is employed to diminish the effect of diffusion on the visibility of the reconstructed image.

M. Shuker; O. Firstenberg; R. Pugatch; A. Ron; N. Davidson

2008-06-17T23:59:59.000Z

234

Public Awareness about Global Warming in Hyderabad, India.  

E-Print Network (OSTI)

?? This study addressed public perceptions and awareness about global warming in India through a survey of 851 subjects in the city of Hyderabad in… (more)

Rao, Vani Sarraju

2011-01-01T23:59:59.000Z

235

Progress toward Biomass and Coal-Derived Syngas Warm Cleanup...  

NLE Websites -- All DOE Office Websites (Extended Search)

Progress toward Biomass and Coal-Derived Syngas Warm Cleanup: Proof-of-Concept Process Demonstration of Multicontaminant Removal Progress toward Biomass and Coal-Derived Syngas...

236

Warm Forming of Aluminum?AMD 307 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

More Documents & Publications Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet USAMP AMD 408 DIE FACE ENGINEERING FOR ADVANCED SHEET MATERIALS...

237

Ferromagnetic neutron stars: axial anomaly, dense neutron matter, and pionic wall  

E-Print Network (OSTI)

We show that a chiral nonlinear sigma model coupled to degenerate neutrons exhibits a ferromagnetic phase at high density. The magnetization is due to the axial anomaly acting on the parallel layers of neutral pion domain walls spontaneously formed at high density. The emergent magnetic field would reach the QCD scale ~ 10^19 [G], which suggests that the quantum anomaly can be a microscopic origin of the magnetars (highly magnetized neutron stars).

Minoru Eto; Koji Hashimoto; Tetsuo Hatsuda

2012-09-21T23:59:59.000Z

238

Dileptons Get Nearly "Blind" to Mass-Scaling Effects In Hot and/or Dense Matter  

E-Print Network (OSTI)

Based on BHHRS and further sharpened by discussions with Gerry Brown that I had in October 2008, we arrive at the present assessment of the dilepton saga, namely, that dileptons become "blind" to changes in the vacuum structure of chiral symmetry (such as, e.g., BR scaling at high temperature and/or at high density and hence are {\\em not} an appropriate probe for a signal for partial or complete chiral restoration, contrary to what has been widely believed. There, however, are a variety of indirect indications that the scaling notion is qualitatively, if not quantitatively, valid and should work in various low-energy nuclear phenomena, and it is fair to conclude that while there is no direct evidence for the scaling notion, there is {\\em none against} it either, in a strong disagreement with what was claimed in CERN Courier November 2009. I will touch briefly on certain observables that could give a clear-cut litmus signal for the vacuum structure of chiral symmetry modified by temperature and/or density.

Mannque Rho

2009-12-16T23:59:59.000Z

239

The physics of dense nuclear matter from supernovae to quark gluon plasma  

Science Journals Connector (OSTI)

... 3, and the maximum mass would be the well-known Chandrasekhar limit of 1.4 solar masses (M©) (refs 12, 13). But neutron stars of up to ... p0 and exploding into non-interacting hadrons at p cycle is a sequence of shock compression, fireball, expansion and freezing out.

Reinhard Stock

1989-01-26T23:59:59.000Z

240

Dense Plasma in Z-pinches and the Plasma Focus  

Science Journals Connector (OSTI)

...experiments in controlled thermonuclear fusion research were Z-pinches...field pinch. But, at fusion temperatures and with...scaling law, but the thermonuclear origin of the neutrons...Z-pinch to attain dense fusion plasmas which might...

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Stochastic and deterministic models for dense granular flow  

E-Print Network (OSTI)

Granular materials such as sand or gravel surround us everyday and yet remain poorly understood. In this thesis, two models are developed for dense granular flow, each capable of predicting flows with accuracy in multiple ...

Kamrin, Kenneth Norman

2008-01-01T23:59:59.000Z

242

Emission of Visible Light by Hot Dense Metals  

E-Print Network (OSTI)

HIFAN 1761 EMISSION OF VISIBLE LIGHT BY HOT DENSE METALS ByDE-AC52-07NA27344. HI FAN Emission of Visible Light by HotABSTRACT We consider the emission of visible light by hot

More, R.M.

2010-01-01T23:59:59.000Z

243

IR Spectra of Dense Xenon and Argon Plasmas  

Science Journals Connector (OSTI)

The results are presented of experimental studies of IR radiation spectra of dense Xe and Ar shock compressed plasmas. The radiation cutoff is found at the wavelength ??1?mThe experimental data are interpreted...

V. E. Fortov; M. U. Kulish; V. B. Mintsev; J. Ortner…

1992-01-01T23:59:59.000Z

244

Elites and the Global Warming Conflict: Directors of Pro-Environmental and Anti-Global Warming Organizations.  

E-Print Network (OSTI)

??The longstanding policy conflict over global warming directly affects the interests of elite groups in the United States. This study investigates the nature of elite… (more)

Hein, James Everett

2007-01-01T23:59:59.000Z

245

SUPPORTED DENSE CERAMIC MEMBRANES FOR OXYGEN SEPARATION  

SciTech Connect

Mixed-conducting membranes have the ability to conduct oxygen with perfect selectivity at elevated temperatures, which makes them an extremely attractive alternative for oxygen separation and membrane reactor applications. The ability to reliably fabricate these membranes in thin or thick films would enable solid-state divisional limitations to be minimized, thus providing higher oxygen flux. Based on that motivation, the overall objective for this project is to develop and demonstrate a strategy for the fabrication of supported Wick film ceramic mixed conducting membranes, and improve the understanding of the fundamental issues associated with reliable fabrication of these membranes. The project has focused on the mixed-conducting ceramic composition SrCo{sub 0.5}FeO{sub x} because of its superior permeability and stability in reducing atmospheres. The fabrication strategy employed involves the deposition of SrCo{sub 0.5}FeO{sub x} thick films onto porous supports of the same composition. In the second year of this project, we completed characterization of the sintering and phase behavior of the porous SrCo{sub 0.5}FeO{sub x} supports, leading to a standard support fabrication methodology. Using a doctor blade method, pastes made from aerosol-derived SrCo{sub 0.5}FeO{sub x} powder dispersed with polyethylene glycol were applied to the supports, and the sintering behavior of the thick film membranes was examined in air and nitrogen atmospheres. It has been demonstrated that the desired crystalline phase content can be produced in the membranes, and that the material in the membrane layer can be highly densified without densifying the underlying support. However, considerable cracking and opening of the film occurred when films densified to a high extent. The addition of MgO into the SrCo{sub 0.5}FeO{sub x} supports was shown to inhibit support sintering so that temperatures up to 1300 C, where significant liquid formation occurs, could be used for film sintering. This successfully reduced cracking, however the films retained open porosity. The investigation of this concept will be continued in the final year of the project. Investigation of a metal organic chemical vapor deposition (MOCVD) method for defect mending in dense membranes was also initiated. An appropriate metal organic precursor (iron tetramethylheptanedionate) was identified whose deposition can be controlled by access to oxygen at temperatures in the 280-300 C range. Initial experiments have deposited iron oxide, but only on the membrane surface; thus refinement of this method will continue.

Timothy L. Ward

2000-06-30T23:59:59.000Z

246

100 LPW 800 Lm Warm White LED  

SciTech Connect

An illumination grade warm white (WW) LED, having correlated color temperature (CCT) between 2800 K and 3500K and capable of producing 800 lm output at 100 lm/W, has been developed in this program. The high power WW LED is an ideal source for use as replacement for incandescent, and Halogen reflector and general purpose lamps of similar lumen value. Over the two year period, we have made following accomplishments: developed a high power warm white LED product and made over 50% improvements in light output and efficacy. The new high power WW LED product is a die on ceramic surface mountable LED package. It has four 1x1 mm{sup 2} InGaN pump dice flip chip attached to a ceramic submount in 2x2 array, covered by warm white phosphor ceramic platelets called Lumiramicâ?¢ and an overmolded silicone lens encapsulating the LED array. The performance goal was achieved through breakthroughs in following key areas: (1) High efficiency pump LED development through pump LED active region design and epi growth quality improvement (funded by internal programs). (2) Increase in injection efficiency (IE) represented by reduction in forward voltage (V{sub f}) through the improvement of the silver-based p-contact and a reduction in spreading resistance. The injection efficiency was increased from 80% at the start of the program to 96% at the end of the program at 700 mA/mm{sup 2}. (3) Improvement in thermal design as represented by reduction in thermal resistance from junction to case, through improvement of the die to submount connection in the thin film flip chip (TFFC) LED and choosing the submount material of high thermal conductivity. A thermal resistance of 1.72 K/W was demonstrated for the high power LED package. (4) Improvement in extraction efficiency from the LED package through improvement of InGaN die level and package level optical extraction efficiency improvement. (5) Improvement in phosphor system efficiency by improving the lumen equivalent (LE) and phosphor package efficiency (PPE) through improvement in phosphor-package interactions. Another achievement in the development of the phosphor integration technology is the demonstration of tight color control. The high power WW LED product developed has been proven to have good reliability. The manufacturing of the product will be done in Philips Lumiledsâ?? LUXEON Rebel production line which has produced billions of high power LEDs. The first high power WW LED product will be released to the market in 2011.

Decai Sun

2010-10-31T23:59:59.000Z

247

Moisture Matters | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Moisture Matters Moisture Matters Cryogenic microscopy methods yield insights to microbial morphology State-of-the-art cryogenic electron microscopy (EM) approaches at EMSL are...

248

Dark Matter Theory  

NLE Websites -- All DOE Office Websites (Extended Search)

Dark Matter Theory Dark Matter Theory Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505)...

249

LLNL scientists find precipitation, global warming link  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 For immediate release: 11/11/2013 | NR-13-11-04 Lawrence Livermore scientists have found that observed changes in global precipitation are directly affected by human activities. LLNL scientists find precipitation, global warming link Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov LIVERMORE, Calif. -- The rain in Spain may lie mainly on the plain, but the location and intensity of that rain is changing not only in Spain but around the globe. A new study by Lawrence Livermore National Laboratory scientists shows that observed changes in global (ocean and land) precipitation are directly affected by human activities and cannot be explained by natural variability alone. The research appears in the Nov. 11 online edition of the Proceedings of the National Academy of Sciences.

250

Reply to "Hurricanes and Global Warming--  

E-Print Network (OSTI)

change. Anthes et al. (2006) include several important in- consistencies. First, Anthes et al. (2006 "Whatever the cause, the near doubling of power dissipation over the pe- riod of record should be a matter understanding of the role of hurricanes in the general circulation of the atmosphere and ocean, even

Colorado at Boulder, University of

251

Warming caused by cumulative carbon emissions towards the trillionth tonne  

E-Print Network (OSTI)

LETTERS Warming caused by cumulative carbon emissions towards the trillionth tonne Myles R. Allen1 emission pathways. We find that the peak warming caused by a given cumulative carbon dioxide emission of emissions or peak emission rate). Hence policy targets based on limiting cumulative emissions of carbon

Fischlin, Andreas

252

Geoengineering: Plan B Remedy for Global Warming Andrew A. Lacis  

NLE Websites -- All DOE Office Websites (Extended Search)

Geoengineering: Plan B Remedy for Global Warming Geoengineering: Plan B Remedy for Global Warming Andrew A. Lacis NASA Goddard Institute for Space Studies Accelerated melting of Greenland ice is a clear indication that consequences of global warming are real and impending. The underlying causes of global warming are well enough understood, but the necessary reduction of greenhouse gases to prevent irreversible climate change is unlikely to happen before the point of no return is reached. To reverse the impending sea level rise, geoengineering counter- measures may be required to counter the current global energy imbalance due to global warming. Of the many proposed remedies, deploying aerosols within the stratosphere offers realistic prospects. Sulfur injections in the lower stratosphere would have the cooling effect of naturally occurring volcanic aerosols. Soot at

253

Warming systems prolong steam-turbine life, accelerate startup  

SciTech Connect

Cycling capability is one of the top challenges in the design, operation, and maintenance of today's powerplants. This article describes how permanent warming systems can be a powerful ally in meeting this challenge, particularly for aging steam turbines. The warming system is typically used to hold steam-turbine shell temperatures during short shutdowns (up to about three days), or to pre-warm shells after longer shut-downs. Permanent warming systems elevate metal temperature above 500 F, distinguishing them from heat tracing systems that operate at much lower temperatures for freeze protection or viscosity control. Permanent warming systems can reduced steam-turbine damage during both startup heating and off-line cooling, and can reduce plant startup time.

Swanekamp, R.

1994-08-01T23:59:59.000Z

254

Surface tension in the cold and dense chiral transition and astrophysical applications  

E-Print Network (OSTI)

The surface tension of cold and dense QCD phase transitions has appeared recently as a key ingredient in different astrophysical scenarios, ranging from core-colapse supernovae explosions to compact star structure. If the surface tension is low enough, observable consequences are possible. Its value is however not known from first-principle methods in QCD, calling for effective approaches. Working within the framework of homogeneous nucleation by Langer, we discuss the steps that are needed to obtain the nucleation parameters from a given effective potential. As a model for deriving the effective potential for the chiral transition, we adopt the linear sigma model with constituent quarks at very low temperatures, which provides an effective description for the thermodynamics of the strong interaction in cold and dense matter, and predict a surface tension of Sigma ~ 5--15 MeV/fm^2, well below previous estimates. Including temperature effects and vacuum logarithmic corrections, we find a clear competition between these features in characterizing the dynamics of the chiral phase conversion.

L. F. Palhares; E. S. Fraga

2011-07-08T23:59:59.000Z

255

The Hubble Web: The Dark Matter Problem and Cosmic Strings  

SciTech Connect

I propose a reinterpretation of cosmic dark matter in which a rigid network of cosmic strings formed at the end of inflation. The cosmic strings fulfill three functions: At recombination they provide an accretion mechanism for virializing baryonic and warm dark matter into disks. These cosmic strings survive as configurations which thread spiral and elliptical galaxies leading to the observed flatness of rotation curves and the Tully-Fisher relation. We find a relationship between the rotational velocity of the galaxy and the string tension and discuss the testability of this model.

Alexander, Stephon [Departments of Physics and Astronomy, Institute for Gravity and Geometry, Pennsylvania State University, University Park, PA 16802 (United States)

2009-07-06T23:59:59.000Z

256

Global Warming: What It Is What Is Controversial About It and What We Might Do in Response to It  

E-Print Network (OSTI)

along coasts. If global warming occurs, many environmentalSee, eg. , S. SCHNEIDER, GLOBAL WARMING: ARE WE ENTERING THETRANSITION (1989); Roberts, Global Warming: Blaming The Sun,

Botkin, Daniel B.

1991-01-01T23:59:59.000Z

257

Will U.S. Agriculture Really Benefit from Global Warming? Accounting for Irrigation in the Hedonic Approach  

E-Print Network (OSTI)

Really Benefit from Global Warming? Accounting forR. , “The Impact of Global Warming on Agriculture: Comment,”371–411. , “The Impact of Global Warming on Agriculture: A

Schlenker, Wolfram; Hanemann, W. Michael; Fisher, Anthony C.

2004-01-01T23:59:59.000Z

258

Evidence for a Soft Nuclear-Matter Equation of State  

Science Journals Connector (OSTI)

The entropy of the fireball formed in central collisions of heavy nuclei at center-of-mass kinetic energies of a few hundred MeV per nucleon is estimated from the ratio of deuterons to protons at large transverse momentum. The observed paucity of deuterons suggests that strong attractive forces are present in hot, dense nuclear matter, or that degrees of freedom beyond the nucleon and pion may already be realized at an excitation energy of 100 MeV per baryon.

Philip J. Siemens and Joseph I. Kapusta

1979-11-12T23:59:59.000Z

259

Strange nuclear matter within Brueckner-Hartree-Fock Theory  

E-Print Network (OSTI)

We have developed a formalism for microscopic Brueckner-type calculations of dense nuclear matter that includes all types of baryon-baryon interactions and allows to treat any asymmetry on the fractions of the different species (n, p, $\\Lambda$, $\\Sigma^0$, $\\Sigma^+$, $\\Sigma^-$, $\\Xi^-$ and $\\Xi^0$). We present results for the different single-particle potentials focussing on situations that can be relevant in future microscopic studies of beta-stable neutron star matter with strangeness. We find the both the hyperon-nucleon and hyperon-hyperon interactions play a non-negligible role in determining the chemical potentials of the different species.

I. Vidana; A. Polls; A. Ramos; M. Hjorth-Jensen; V. G. J. Stoks

1999-09-09T23:59:59.000Z

260

Global warming alters sound transmission: differential impact on the prey detection ability of echolocating bats  

Science Journals Connector (OSTI)

...research-article Research articles 1004 69 Global warming alters sound transmission: differential...change in community composition. Global warming can thus directly affect the prey...prey. echolocation|foraging|global warming|sensory ecology|species interactions...

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Respiratory control in aquatic insects dictates their vulnerability to global warming  

Science Journals Connector (OSTI)

...their vulnerability to global warming Wilco C. E. P. Verberk...synergistic effects of global warming and hypoxia. 2. Material...Thermal tolerance and the global redistribution of animals...confound long-term warming effects on river macroinvertebrates...

2013-01-01T23:59:59.000Z

262

Warming up, turning sour, losing breath: ocean biogeochemistry under global change  

Science Journals Connector (OSTI)

...hydrological cycle in response to global warming. Particularly in the high latitudes...This effect could be modified by global warming-induced changes in the upwelling...emission targets for limiting global warming to 2CNature 458 11581162 10...

2011-01-01T23:59:59.000Z

263

Global warming from chlorofluorocarbons and their alternatives: Time scales of chemistry and climate  

E-Print Network (OSTI)

and their replacements on global warming. Nature Hansen J. ,gas emissions to global warming. Nature London Amendment toNature 315, 649-652, Global warming time scales WMO (World

Ko, Malcolm K.W.; Sze, Nien Dak; Molnar, Gyula; Prather, Michael J

1993-01-01T23:59:59.000Z

264

Review: The Global Warming Reader: A Century of Writing About Climate Change  

E-Print Network (OSTI)

Review: The Global Warming Reader: A Century of WritingMcKibben, Bill, ed. The Global Warming Reader: A Century ofrecord of no action on global warming. Those who have done

Anderson, Byron P.

2013-01-01T23:59:59.000Z

265

Amazon Basin climate under global warming: the role of the sea surface temperature  

Science Journals Connector (OSTI)

...Amazon Basin climate under global warming: the role of the sea surface...temperature|carbon cycle|global warming| 1. Introduction First-generation...further into two components: a global mean warming (MW) and gridbox local anomalies...

2008-01-01T23:59:59.000Z

266

The reef-building coral Siderastrea siderea exhibits parabolic responses to ocean acidification and warming  

Science Journals Connector (OSTI)

...ocean acidification and warming Karl D. Castillo 1 Justin...are predicted to cause global average surface ocean...2553 microatm) and warming (25, 28, 32C) on...ocean acidification and global warming through pH up-regulation...

2014-01-01T23:59:59.000Z

267

Effect of warm up on energy cost and energy sources of a ballet dance exercise  

Science Journals Connector (OSTI)

To evaluate the effect of warm up on energy cost and energy sources of a ballet dance exercise, 12...tours piqués en dedans on pointe...) without and following a warm up. Warm up consisted in a light running foll...

Laura Guidetti; Gian Pietro Emerenziani…

2007-02-01T23:59:59.000Z

268

4 - Modeling the Relationship Between Global Warming, Violence, and Crime  

Science Journals Connector (OSTI)

Abstract One of the challenges of global warming research to the social sciences is that physical science research modalities are different. Consequently, efforts to tie it to the social sciences, particularly those related to violence and crime, are difficult to develop. This chapter looks at two models to assess the linkages between global warming and crime. The first, the Homer-Dixon model, uses a resource scarcity model to look at these linkages. According to the Homer-Dixon model, many aspects of global warming produce scarcities such as food shortages, ranch and farmland loss, and clean-water shortages. By tracing the indirect effects of scarcities through intervening variables of migration and state hardening, the model allows us to see various kinds of crime and violence that might happen under global warming conditions. The second model is the Agnew model, developed to assess theoretical linkages between crime and global warming, primarily focusing on social disorganization and strain perspectives. The second model fills a critical shortcoming in the first model; it provides a nuanced notion of crime and crime theory. Hence, it provides a needed “back end” of crime outcomes to tie into the Homer-Dixon model. Also, we discuss the way in which many dimensions of global warming can be modeled relatively straightforwardly into a routine activities perspective, where the social and economic disruptions caused by global warming give rise to new patterns of human activity and, consequently, new patterns of criminal and predatory activities.

John P. Crank; Linda S. Jacoby

2015-01-01T23:59:59.000Z

269

NETL: Gasification Systems - Integrated Warm Gas Multicontaminant Cleanup  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas Project Number: DE-FC26-05NT42459 Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas Project ID: DE-FC26-05NT42459 Objective: The objective is to develop a warm multi-contaminant syngas cleaning system for operation between 300 and 700° F. This project will continue development of the RTI warm syngas cleanup technology suite. Based on the field testing results with real syngas from Eastman Chemical Company's gasifier under DOE Contract DE-AC26-99FT40675, additional technical issues need to be addressed to move the technologies used in warm syngas cleaning further towards commercial deployment especially for chemical/fuels production. These issues range from evaluation of startup and standby options for the more developed desulfurization processes to integration and actual pilot plant testing with real coal-derived syngas for the technologies that were tested at bench scale during Phase I. Development shall continue of the warm gas syngas cleaning technology platform through a combination of lab-scale R&D and larger integrated pilot plant testing with real coal-derived syngas as well as process/systems analysis and simulation for optimization of integration and intensification.

270

The Interplay of Global Warming Framing In News Media Coverage In 1988-2009.  

E-Print Network (OSTI)

??This study examined the framing of global warming in the national news media. It investigated the framing of global warming as a competitive process that… (more)

Sinaga, Simon

2011-01-01T23:59:59.000Z

271

Modern compact star observations and the quark matter EoS  

E-Print Network (OSTI)

A hybrid equation of state for dense matter is presented that satisfies phenomenological constraints from modern compact star observations which indicate high maximum masses of about 2 M_sun and large radii of R> 12 km. The corresponding isospin symmetric equation of state is consistent with flow data analyses of heavy-ion collisions. The transition from nuclear to two-flavor color superconducting quark matter at n approximately 0.55 fm^{-3} is almost a crossover.

T. Klahn

2006-11-22T23:59:59.000Z

272

11 - Security Issues and Global Warming  

Science Journals Connector (OSTI)

Abstract This chapter begins with a discussion of the increasing empowerment of nonstate actors to challenge nation-states for commerce and security. One of the central trends is the operational coordination of organized crime and terrorist entities. They tend to share the same pipelines and at times some of the same personnel since both have a need for similar specialized skills. We witness the emergence of the third generation of guerillas, described as leaderless or horizontal in structure, global, and highly adaptable to urban areas. Crevald’s position on guerilla wars is discussed—he asserted that states can never effectively combat guerilla wars. We then discuss the many ways in which transnational criminal organizations and terrorists are working together in the current era. From there, we assess the roles of criminalized states and “black holes,” geographical areas not controlled by state-based security entities. We discuss how global warming works to enhance the strengths of nonstate actors, while at the same time undermining or limiting state security. This chapter closes with a discussion of the security changes likely to be associated with an ice-free Arctic Ocean. We look at changes already occurring, and assess the roles played by the United States, Canada, Russia, and China. All are in exploration stages for previously inaccessible resources, and most are increasing their military presence across the region.

John P. Crank; Linda S. Jacoby

2015-01-01T23:59:59.000Z

273

Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Simulations Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Berkeley Lab research could help scientists predict how carbon is stored underground August 22, 2013 | Tags: Earth Sciences, Geosciences Dan Krotz 510-486-4019 dakrotz@lbl.gov red2.jpg Artistic rendition of liquid-liquid separation in a supersaturated calcium carbonate solution. New research suggests that a dense liquid phase (shown in red in the background and in full atomistic detail based on computer simulations in the foreground) forms at the onset of calcium carbonate crystallization. (Credit: Berkeley Lab) Computer simulations conducted at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) could help scientists

274

RHIC | Why Does Quark Matter Matter?  

NLE Websites -- All DOE Office Websites (Extended Search)

Why Does Quark Matter 'Matter'? Why Does Quark Matter 'Matter'? The history of modern technological development can be viewed as a series of investigations, with ever increasing resolution, into the microscopic structure of matter. Since the days of the early Greek philosophers, science has been on a continual quest to find the smallest piece - the most fundamental building block - forming the substance of the universe. STAR researchers During that journey, many beautiful and exotic properties of the subatomic world have been discovered: particles with wave-like properties the ultimate position of which can never be known; "particles" of light that deliver a fixed amount of energy when they strike the atoms of a material's surface; particles in some types of electrical conductors that

275

Are You Keeping Warm This Winter? | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Are You Keeping Warm This Winter? Are You Keeping Warm This Winter? Are You Keeping Warm This Winter? January 23, 2013 - 4:33pm Addthis An efficient heater can save money and energy while keeping you warmer. | Photo by Dennis Schroeder, NREL 20288. An efficient heater can save money and energy while keeping you warmer. | Photo by Dennis Schroeder, NREL 20288. Elizabeth Spencer Communicator, National Renewable Energy Laboratory How can I participate? Get an energy audit and learn about your heating options to warm your home while saving money. Last week, I turned on the weather forecast to find that the entire central United States was hovering somewhere between 5 and 20 degrees. Talk about frigid! I've lived all over the country, and I know how incredibly miserable it is to do anything when the high barely ekes above 0 degrees

276

Building Energy Software Tools Directory: AkWarm  

NLE Websites -- All DOE Office Websites (Extended Search)

AkWarm AkWarm AkWarm logo. Innovative, user-friendly, Windows-based software for home energy modeling. AkWarm is designed for weatherization assessment and the EPA Energy Star Home energy rating program. Features include: Graphical display of energy use by building component, improvement options analysis, design heat load, calculates CO2 emissions, and shows code compliance. Utility, weather data, and other libraries are maintained in a database library for easy updating. A separate database is available to archive all input and output data for detailed analysis of housing types, trends, amd energy use. Keywords home energy rating systems, home energy, residential modeling, weatherization Validation/Testing N/A Expertise Required Basic understanding of building construction, with a minimal level of

277

Are You Keeping Warm This Winter? | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Are You Keeping Warm This Winter? Are You Keeping Warm This Winter? Are You Keeping Warm This Winter? January 23, 2013 - 4:33pm Addthis An efficient heater can save money and energy while keeping you warmer. | Photo by Dennis Schroeder, NREL 20288. An efficient heater can save money and energy while keeping you warmer. | Photo by Dennis Schroeder, NREL 20288. Elizabeth Spencer Communicator, National Renewable Energy Laboratory How can I participate? Get an energy audit and learn about your heating options to warm your home while saving money. Last week, I turned on the weather forecast to find that the entire central United States was hovering somewhere between 5 and 20 degrees. Talk about frigid! I've lived all over the country, and I know how incredibly miserable it is to do anything when the high barely ekes above 0 degrees

278

Warm coats, big thanks | Y-12 National Security Complex  

NLE Websites -- All DOE Office Websites (Extended Search)

Community / Warm coats, big thanks Community / Warm coats, big thanks Warm coats, big thanks Posted: January 9, 2014 - 2:23pm Over the last 12 years, Y-12ers have donated almost 7000 coats, sweaters and other winter wear to the Volunteer Ministry Center. As East Tennessee faces the coldest temperatures seen in a long while, Y-12ers have shown their volunteer spirit for the twelfth straight year by helping countless people stay warm thanks to another successful United Way Coat Drive to benefit the Volunteer Ministry Center. In total, the site donated 589 coats and winter wear items, 64 pairs of gloves, 47 scarves, and 66 hats and toboggans, which VMC makes available to the public through its Knoxville office. In addition, this year's efforts were expanded to include collection of toiletries for VMC. Y-12 collected more than 20 copy paper boxes full of

279

Wildfires may contribute more to global warming than previously predicted  

NLE Websites -- All DOE Office Websites (Extended Search)

Wildfires may contribute more to global warming Wildfires may contribute more to global warming Wildfires may contribute more to global warming than previously predicted They suggest that fire emissions could contribute a lot more to the observed climate warming than current estimates show. July 9, 2013 Haze of smoke emanating from the 2011 Las Conchas, NM fire. Haze of smoke emanating from the 2011 Las Conchas, NM fire. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "The fact that we are experiencing more fires and that climate change may increase fire frequency underscores the need to include these specialized particles in the computer models, and our results show how this can be done," Dubey said. Particle analysis shows "tar ball" effect is significant LOS ALAMOS, N.M., July 9, 2013-Wildfires produce a witch's brew of

280

Wildfires may contribute more to global warming than previously predicted  

NLE Websites -- All DOE Office Websites (Extended Search)

Wildfires may contribute more to global warming Wildfires may contribute more to global warming Wildfires may contribute more to global warming than previously predicted They suggest that fire emissions could contribute a lot more to the observed climate warming than current estimates show. July 9, 2013 Haze of smoke emanating from the 2011 Las Conchas, NM fire. Haze of smoke emanating from the 2011 Las Conchas, NM fire. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "The fact that we are experiencing more fires and that climate change may increase fire frequency underscores the need to include these specialized particles in the computer models, and our results show how this can be done," Dubey said. Particle analysis shows "tar ball" effect is significant LOS ALAMOS, N.M., July 9, 2013-Wildfires produce a witch's brew of

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Warm Weather and the Daily Commute | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Warm Weather and the Daily Commute Warm Weather and the Daily Commute Warm Weather and the Daily Commute May 7, 2013 - 12:02pm Addthis Biking to work helps you get some exercise while reducing your carbon footprint. | Photo courtesy of iStockphoto.com/olaser Biking to work helps you get some exercise while reducing your carbon footprint. | Photo courtesy of iStockphoto.com/olaser Elizabeth Spencer Communicator, National Renewable Energy Laboratory How can I participate? Check out options for busing or carpooling in your area or, if you live close, try walking or biking to work. You know the weather is starting to warm up when you start hearing about those "bike, bus, or walk to work" challenges. And while my local news just started drumming up publicity for theirs, I've seen these events pop up in

282

Brooks Warm Springs Aquaculture Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Warm Springs Aquaculture Low Temperature Geothermal Facility Warm Springs Aquaculture Low Temperature Geothermal Facility Jump to: navigation, search Name Brooks Warm Springs Aquaculture Low Temperature Geothermal Facility Facility Brooks Warm Springs Sector Geothermal energy Type Aquaculture Location Fergus County, Montana Coordinates 47.2126745°, -109.4141° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

283

Infrared absorption spectra, radiative efficiencies, and global warming potentials  

E-Print Network (OSTI)

. Nutt,3 Keith P. Shine,4 Kevin Smith,5 and Timothy J. Wallington2 Received 17 July 2010; revised 21. Wallington (2010), Infrared absorption spectra, radiative efficiencies, and global warming potentials

Wirosoetisno, Djoko

284

Global warming potentials and radiative efficiencies of halocarbons and related  

E-Print Network (OSTI)

,2 J. S. Fuglestvedt,1 G. Marston,3 G. Myhre,1 C. J. Nielsen,4 K. P. Shine,2 and T. J. Wallington5. Nielsen, K. P. Shine, and T. J. Wallington (2013), Global warming potentials and radiative ef ciencies

Wirosoetisno, Djoko

285

Physical aspects of the greenhouse effect and global warming  

Science Journals Connector (OSTI)

According to the simplest model of the earth’s radiative balance global warming will occur with certainty as humankind increases its production and consumption of nonsolar energy. This prediction is revisited using a broader model that allows the greenhouse effect to be considered. The new model predicts a global warming of ?T E =(114? K )? where ? is the rate of surface energy release in units of the average incident solar radiation 342? W?m ?2 and ?T E is the average temperature rise at the earth’s surface. Present values of these quantities excluding geothermal sources are ?=0.69×10 ?4 and ?T E =7.9? mK . The model assigns a small number of optical parameters to the atmosphere and surface and qualifies the simple warming prediction: It is rigorous only if parameters other than ? are unchanged. The model is not complex and should serve as an aid to an elementary understanding of global warming.

Robert S. Knox

1999-01-01T23:59:59.000Z

286

SPECIAL EARTH DAY COLLOQUIUM: How Global Warming Is Heating Things...  

NLE Websites -- All DOE Office Websites (Extended Search)

18, 2013, 12:00pm to 1:30pm Colloquia MBG Auditorium SPECIAL EARTH DAY COLLOQUIUM: How Global Warming Is Heating Things Up at Work Dr. John P. Dunne Geophysical Fluid Dynamics...

287

Upper-tropospheric moistening in response to anthropogenic warming  

Science Journals Connector (OSTI)

Upper-tropospheric moistening in response to anthropogenic warming 10.1073/pnas.1409659111 Eui-Seok Chung Brian Soden B. J. Sohn Lei Shi aRosenstiel School of Marine and Atmospheric Science, University of Miami, Miami...

Eui-Seok Chung; Brian Soden; B. J. Sohn; Lei Shi

2014-01-01T23:59:59.000Z

288

Diurnal Variations of Warm-Season Precipitation over Northern China  

Science Journals Connector (OSTI)

This study examines the diurnal variations of the warm-season precipitation over northern China using the high-resolution precipitation products obtained from the Climate Prediction Center’s morphing technique (CMORPH) during May–August of 2003–...

Huizhong He; Fuqing Zhang

2010-04-01T23:59:59.000Z

289

Warm Conveyor Belts in Idealized Moist Baroclinic Wave Simulations  

Science Journals Connector (OSTI)

This idealized modeling study of moist baroclinic waves addresses the formation of moist ascending airstreams, so-called warm conveyor belts (WCBs), their characteristics, and their significance for the downstream flow evolution. Baroclinic wave ...

Sebastian Schemm; Heini Wernli; Lukas Papritz

2013-02-01T23:59:59.000Z

290

A 15-Year Climatology of Warm Conveyor Belts  

Science Journals Connector (OSTI)

This study presents the first climatology of so-called warm conveyor belts (WCBs), strongly ascending moist airstreams in extratropical cyclones that, on the time scale of 2 days, rise from the boundary layer to the upper troposphere. The ...

Sabine Eckhardt; Andreas Stohl; Heini Wernli; Paul James; Caroline Forster; Nicole Spichtinger

2004-01-01T23:59:59.000Z

291

Modeling the Impact of Warming in Climate Change Economics  

E-Print Network (OSTI)

Any economic analysis of climate change policy requires some model that describes the impact of warming on future GDP and consumption. Most integrated assessment models (IAMs) relate temperature to the level of real GDP ...

Pindyck, Robert S.

292

R&D for technology to solve global warming  

Science Journals Connector (OSTI)

Global warming is a problem in which the combustion of coal, oil, and other fossil fuels causes the atmospheric concentrations of greenhouse gases, such as carbon dioxide (CO2), to increase. This results in mounting global air temperatures that lead to climatic change. Specifically, global warming will cause a rise in sea levels, changes in the rain-fall patterns, and other problems. In order to secure the route to solutions for global warming that requires new responses in ways that are compatible with economic growth, it is essential to achieve breakthroughs with innovative technologies. In addition to energ-related R&D, also important are R&D for CO2 absorption and fixation for fundamental solution to global warming. Japan has started the development of innovative environmental technologies, such as technologies for CO2 fixation and utilization.

K. Honjo

1996-01-01T23:59:59.000Z

293

Rising Sea Levels Due to Global Warming Are Unstoppable  

NLE Websites -- All DOE Office Websites (Extended Search)

Levels Due to Global Warming Are Unstoppable Mitigation can slow down but not prevent sea level rise for centuries to come August 5, 2013 Contact: Linda Vu, Lvu@lbl.gov, +1 510 495...

294

Recent Bottom Water Warming in the Pacific Ocean  

Science Journals Connector (OSTI)

Decadal changes of abyssal temperature in the Pacific Ocean are analyzed using high-quality, full-depth hydrographic sections, each occupied at least twice between 1984 and 2006. The deep warming found over this time period agrees with previous ...

Gregory C. Johnson; Sabine Mecking; Bernadette M. Sloyan; Susan E. Wijffels

2007-11-01T23:59:59.000Z

295

Observing Warm Clouds in 3D Using ARM Scanning Cloud  

NLE Websites -- All DOE Office Websites (Extended Search)

Observing Warm Clouds in 3D Using ARM Scanning Cloud Radars and a Novel Ensemble Method For original submission and image(s), see ARM Research Highlights http:www.arm.gov...

296

St. Augustinegrass Warm-season turfgrass. Prefers full sun, but  

E-Print Network (OSTI)

St. Augustinegrass Warm-season turfgrass. Prefers full sun, but has a high tolerance for shade-season grass. It does best in full sun and high temperatures. Goes dormant and turns brown in winter. Very

Ishida, Yuko

297

Gamma-rays and neutrinos from dense environment of massive binary systems in open clusters  

E-Print Network (OSTI)

TeV gamma-ray emission has been recently observed from direction of a few open clusters containing massive stars. We consider the high energy processes occurring within massive binary systems and in their dense environment by assuming that nuclei, from the stellar winds of massive stars, are accelerated at the collision region of the stellar winds. We calculate the rates of injection of protons and neutrons from fragmentation of these nuclei in collisions with stellar radiation and matter of the winds from the massive companions in binary system. Protons and neutrons can interact with the matter, within the stellar wind cavity and within the open cluster, producing pions which decay into $\\gamma$-rays and neutrinos. We discuss the detectability of such $\\gamma$-ray emission by the present and future Cherenkov telescopes for the case of two binary systems Eta Carinae, within the Carina Nebula, and WR 20a, within the Westerlund 2 open cluster. We also calculate the neutrino fluxes produced by protons around the...

Bednarek, W; Sobczak, T

2014-01-01T23:59:59.000Z

298

Assessment of boreal forest historical C dynamics in Yukon River Basin: relative roles of warming and fire regime change  

SciTech Connect

Carbon (C) dynamics of boreal forest ecosystems have substantial implications for efforts to mitigate the rise of atmospheric CO2 and may be substantially influenced by warming and changing wildfire regimes. In this study we applied a large-scale ecosystem model that included dynamics of organic soil horizons and soil organic matter characteristics of multiple pools to assess forest C stock changes of the Yukon River Basin (YRB) in Alaska, USA, and Canada from 1960 through 2006, a period characterized by substantial climate warming and increases in wildfire. The model was calibrated for major forests with data from long-term research sites and evaluated using a forest inventory database. The regional assessment indicates that forest vegetation C storage increased by 46 Tg C, but that total soil C storage did not change appreciably during this period. However, further analysis suggests that C has been continuously lost from the mineral soil horizon since warming began in the 1970s, but has increased in the amorphous organic soil horizon. Based on a factorial experiment, soil C stocks would have increased by 158 Tg C if the YRB had not undergone warming and changes in fire regime. The analysis also identified that warming and changes in fire regime were approximately equivalent in their effects on soil C storage, and interactions between these two suggests that the loss of organic horizon thickness associated with increases in wildfire made deeper soil C stocks more vulnerable to loss via decomposition. Subbasin analyses indicate that C stock changes were primarily sensitive to the fraction of burned forest area within each subbasin and that boreal forest ecosystems in the YRB are currently transitioning from being sinks to sources at ;0.7% annual area burned. We conclude that it is important for international mitigation efforts focused on controlling atmospheric CO2 to consider how climate warming and changes in fire regime may concurrently affect the CO2 sink strength of boreal forests. It is also important for large-scale biogeochemical and earth system models to include organic soil dynamics in applications to assess regional C dynamics of boreal forests responding to warming and changes in fire regime.

Yuan, Fengming [ORNL; Yi, Shuhua [Cold and Arid Regions Environmental and Engineering Research Institute, CAS; McGuire, A. David [University of Alaska; Johnson, Kristopher D [University of Alaska, Fairbanks; Liang, Jingjing [University of Alaska, Fairbanks; Harden, Jennifer [USGS, Menlo Park, CA; Kasischke, Eric S. [University of Maryland, College Park; Kurz, Werner [Canadian Forest Service

2012-01-01T23:59:59.000Z

299

Environmental Impact on Applied Technology- Global Warming CFCs & VOCs  

E-Print Network (OSTI)

Fuel Oil -3299 -3093 -2834 Coal -4545 -4338 -4079 Wood Waste -5232 -5025 -4766 Coping With Environmental Pressures The textile finishing industry, pulp and paper and thers rejecting large quantities of warm water are undegoing increased... Fuel Oil -3299 -3093 -2834 Coal -4545 -4338 -4079 Wood Waste -5232 -5025 -4766 Coping With Environmental Pressures The textile finishing industry, pulp and paper and thers rejecting large quantities of warm water are undegoing increased...

Gilbert, J. S.

300

Abandoned Soviet farmlands could help offset global warming  

Science Journals Connector (OSTI)

Abandoned Soviet farmlands could help offset global warming ... Also, should these countries find themselves with carbon-emissions treaty obligations following the upcoming Copenhagen conference on global warming, burning grasses in lieu of coal “would give them carbon credits forever,” says Wolf. ... “Coal and oil, on the other hand, took the CO2 out of the atmosphere millions of years ago, so burning them only adds to the global CO2 supply. ...

Christopher Pala

2009-10-28T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Dense Fast Random Projections and Lean Walsh Edo Liberty ,  

E-Print Network (OSTI)

Dense Fast Random Projections and Lean Walsh Transforms Edo Liberty , , Nir Ailon , and Amit Singer , Abstract. Random projection methods give distributions over k Ã? d matrices such that if a matrix (chosen Projections, Lean Walsh Transforms, Johnson Lin- denstrauss, Dimension reduction. 1 Introduction

Singer, Amit

302

Identifying Energy Waste through Dense Power Sensing and Utilization Monitoring  

E-Print Network (OSTI)

Identifying Energy Waste through Dense Power Sensing and Utilization Monitoring Maria Kazandjieva the efficiency of such a computing system requires detailed data of both en- ergy consumption and energy waste to differentiate energy used well from energy waste. This is an important difference from pre- vious work [8, 14

Stanford University

303

Reliable and Energy-Efficient Routing Protocol in Dense  

E-Print Network (OSTI)

Reliable and Energy-Efficient Routing Protocol in Dense Wireless Sensor Networks Min Chen, Taekyoung Kwon, Shiwen Mao, + Yong Yuan, Victor C.M. Leung* Department of Electrical and Computer@snu.ac.kr Department of Electrical and Computer Engineering Auburn University, 200 Broun Hall, Auburn, AL 36849

Chen, Min

304

Atmospheric Plasma Deposited Dense Silica Coatings on Plastics  

Science Journals Connector (OSTI)

Atmospheric Plasma Deposited Dense Silica Coatings on Plastics ... (8) Finally, some plasma techniques including atmospheric plasmas work at low gas temperature, are suitable for treating plastics with low glass transition temperatures, and can even be used on biological samples. ... These results suggest that the mechanism in the atm.-pressure plasma is the same as that in low-pressure plasmas. ...

Linying Cui; Alpana N. Ranade; Marvi A. Matos; Liam S. Pingree; Theo J. Frot; Geraud Dubois; Reinhold H. Dauskardt

2012-11-26T23:59:59.000Z

305

Engineering A polymer brush is a dense monolayer of highly  

E-Print Network (OSTI)

method to produce dense polymer brushes on nanoparticles. Such particles have proven to be extremely effective emulsifying agents by virtue of their high affinity adsorption to oil droplet/water interfaces for use as emulsifiers or as environmental remediation agents, and the development of surfactant systems

306

AVOIDING FAMILIES AND TUKEY FUNCTIONS ON THE NOWHERE DENSE IDEAL  

E-Print Network (OSTI)

AVOIDING FAMILIES AND TUKEY FUNCTIONS ON THE NOWHERE DENSE IDEAL S_LAWOMIR SOLECKI AND STEVO TODORCEVIC Abstract. We investigate Tukey functions from of Isbell and Fremlin by showing that this ideal is not Tukey reducible to the ideal of density zero

Solecki, Slawomir

307

Hugoniot measurements of double-shocked precompressed dense xenon plasmas  

Science Journals Connector (OSTI)

The current partially ionized plasmas models for xenon show substantial differences since the description of pressure and thermal ionization region becomes a formidable task, prompting the need for an improved understanding of dense xenon plasmas behavior at above 100 GPa. We performed double-shock compression experiments on dense xenon to determine accurately the Hugoniot up to 172 GPa using a time-resolved optical radiation method. The planar strong shock wave was produced using a flyer plate impactor accelerated up to ?6 km/s with a two-stage light-gas gun. The time-resolved optical radiation histories were acquired by using a multiwavelength channel optical transience radiance pyrometer. Shock velocity was measured and mass velocity was determined by the impedance-matching methods. The experimental equation of state of dense xenon plasmas are compared with the self-consistent fluid variational calculations of dense xenon in the region of partial ionization over a wide range of pressures and temperatures.

J. Zheng, Q. F. Chen, Y. J. Gu, and Z. Y. Chen

2012-12-12T23:59:59.000Z

308

in Condensed Matter Physics  

E-Print Network (OSTI)

Master in Condensed Matter Physics ­ Master académique #12;2 #12;3 Students at the University. Condensed matter physics is about explaining and predicting the relationship between the atomic, and broad education in the field of condensed matter physics · introduce you to current research topics

van der Torre, Leon

309

Predicting and mitigating the global warming potential of agro-ecosystems  

E-Print Network (OSTI)

Predicting and mitigating the global warming potential of agro-ecosystems S. Lehugera 1 , B and methane are the main biogenic greenhouse gases (GHG) con-2 tributing to the global warming potential (GWP to design productive16 agro-ecosystems with low global warming impact.17 Keywords18 Global warming potential

Paris-Sud XI, Université de

310

Game Theory and Global Warming Steve Schecter (North Carolina State University)  

E-Print Network (OSTI)

Game Theory and Global Warming Steve Schecter (North Carolina State University) Mary Lou Zeeman global warming game It's time to negotiate a new treaty to stop global warming. · Player 1: Governments, Brazil, Mexico, . . . ). Situation: · An investment of $2 trillion is needed to stop global warming

Schecter, Stephen

311

Increased Climate Variability Is More Visible Than Global Warming: A General  

E-Print Network (OSTI)

Increased Climate Variability Is More Visible Than Global Warming: A General System@utep.edu Abstract While global warming is a statistically confirmed long-term phenomenon, its most visible than the global warming itself. 1 Formulation of the Problem What is global warming. The term "global

Kreinovich, Vladik

312

Impact of global dimming and brightening on global warming Martin Wild,1  

E-Print Network (OSTI)

Impact of global dimming and brightening on global warming Martin Wild,1 Atsumu Ohmura,1 and Knut February 2007. [1] Speculations on the impact of variations in surface solar radiation on global warming was responsible for the observed warming. To disentangle surface solar and greenhouse influences on global warming

Fischlin, Andreas

313

Big Questions: Dark Matter  

ScienceCinema (OSTI)

Carl Sagan's oft-quoted statement that there are "billions and billions" of stars in the cosmos gives an idea of just how much "stuff" is in the universe. However scientists now think that in addition to the type of matter with which we are familiar, there is another kind of matter out there. This new kind of matter is called "dark matter" and there seems to be five times as much as ordinary matter. Dark matter interacts only with gravity, thus light simply zips right by it. Scientists are searching through their data, trying to prove that the dark matter idea is real. Fermilab's Dr. Don Lincoln tells us why we think this seemingly-crazy idea might not be so crazy after all.

Lincoln, Don

2014-08-07T23:59:59.000Z

314

Warm Cores around Regions of Low-Mass Star Formation  

E-Print Network (OSTI)

Warm cores (or hot corinos) around low-mass protostellar objects show a rich chemistry with strong spatial variations. This chemistry is generally attributed to the sublimation of icy mantles on dust grains initiated by the warming effect of the stellar radiation. We have used a model of the chemistry in warm cores in which the sublimation process is based on extensive laboratory data; these data indicate that sublimation from mixed ices occurs in several well-defined temperature bands. We have determined the position of these bands for the slow warming by a solar-mass star. The resulting chemistry is dominated by the sublimation process and by subsequent gas-phase reactions; strong spatial and temporal variations in certain molecular species are found to occur, and our results are, in general, consistent with observational results for the well-studied source IRAS 16293-2422. The model used is similar to one that describes the chemistry of hot cores. We infer that the chemistry of both hot cores and warm core...

Awad, Zainab; Collings, Mark P; Williams, David A

2010-01-01T23:59:59.000Z

315

Soft X-Ray Spectroscopic Study of Dense Strontium-Doped Lanthanum...  

NLE Websites -- All DOE Office Websites (Extended Search)

Soft X-Ray Spectroscopic Study of Dense Strontium-Doped Lanthanum Manganite Cathodes for Solid Oxide Fuel Cell Applications. Soft X-Ray Spectroscopic Study of Dense Strontium-Doped...

316

Energy levels of a heavy ion moving in dense plasmas  

SciTech Connect

In this paper, the potential of a slowly moving test particle moving in collisional dense plasmas is studied. It is composed of the Debye-shielding potential, wake potential, and collision term. The Ritz variational-perturbational method is developed for calculating relativistic binding energy levels of a heavy ion moving in dense plasmas. Binding energy levels of a heavy ion moving in plasmas are calculated. The results show that both non-relativistic energy levels and relativistic energy levels become more negative as the temperature becomes high. They also become more negative as the number density decreasing. Relativistic correction is important for calculating binding energy levels. Both relativistic energy levels and non-relativistic energy levels vary minutely as the speed of heavy ion varies.

Hu, Hongwei; Chen, Wencong [Department of Physics, Shangqiu Normal University, Shangqiu 476000 (China)] [Department of Physics, Shangqiu Normal University, Shangqiu 476000 (China); Zhao, Yongtao [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)] [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Li, Fuli [Department of Applied Physics, Xian Jiao-Tong University, Xian 710049 (China)] [Department of Applied Physics, Xian Jiao-Tong University, Xian 710049 (China); Dong, Chenzhong [College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China)] [College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China)

2013-12-15T23:59:59.000Z

317

Collective waves in dense and confined microfluidic droplet arrays  

E-Print Network (OSTI)

Excitation mechanisms for collective waves in confined dense one-dimensional microfluidic droplet arrays are investigated by experiments and computer simulations. We demonstrate that distinct modes can be excited by creating specific `defect' patterns in flowing droplet trains. Excited longitudinal modes exhibit a short-lived cascade of pairs of laterally displacing droplets. Transversely excited modes obey the dispersion relation of microfluidic phonons and induce a coupling between longitudinal and transverse modes, whose origin is the hydrodynamic interaction of the droplets with the confining walls. Moreover, we investigate the long-time behaviour of the oscillations and discuss possible mechanisms for the onset of instabilities. Our findings demonstrate that the collective dynamics of microfluidic droplet ensembles can be studied particularly well in dense and confined systems. Experimentally, the ability to control microfluidic droplets may allow to modulate the refractive index of optofluidic crystals which is a promising approach for the production of dynamically programmable metamaterials.

Ulf D. Schiller; Jean-Baptiste Fleury; Ralf Seemann; Gerhard Gompper

2015-02-19T23:59:59.000Z

318

Method for making dense crack free thin films  

DOE Patents (OSTI)

The process described herein provides a simple and cost effective method for making crack free, high density thin ceramic film. The steps involve depositing a layer of a ceramic material on a porous or dense substrate. The deposited layer is compacted and then the resultant laminate is sintered to achieve a higher density than would have been possible without the pre-firing compaction step.

Jacobson, Craig P. (Lafayette, CA); Visco, Steven J. (Berkeley, CA); De Jonghe, Lutgard C. (Lafayette, CA)

2007-01-16T23:59:59.000Z

319

Compacting Plastic-Bonded Explosive Molding Powders to Dense Solids  

SciTech Connect

Dense solid high explosives are made by compacting plastic-bonded explosive molding powders with high pressures and temperatures for extended periods of time. The density is influenced by manufacturing processes of the powders, compaction temperature, the magnitude of compaction pressure, pressure duration, and number of repeated applications of pressure. The internal density variation of compacted explosives depends on method of compaction and the material being compacted.

B. Olinger

2005-04-15T23:59:59.000Z

320

Chemical And Isotopic Investigation Of Warm Springs Associated With Normal  

Open Energy Info (EERE)

Isotopic Investigation Of Warm Springs Associated With Normal Isotopic Investigation Of Warm Springs Associated With Normal Faults In Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Chemical And Isotopic Investigation Of Warm Springs Associated With Normal Faults In Utah Details Activities (3) Areas (1) Regions (0) Abstract: Thermal springs associated with normal faults in Utah have been analyzed for major cations and anions, and oxygen and hydrogen isotopes. Springs with measured temperatures averaging greater than 40°C are characterized by Na + K- and SO4 + Cl-rich waters containing 103 to 104 mg/l of dissolved solids. Lower temperature springs, averaging less than 40°C, are more enriched in Ca + Mg relative to Na + K. Chemical variations monitored through time in selected thermal springs are probably produced by

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Warm Springs State Hospital Space Heating Low Temperature Geothermal  

Open Energy Info (EERE)

State Hospital Space Heating Low Temperature Geothermal State Hospital Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Warm Springs State Hospital Space Heating Low Temperature Geothermal Facility Facility Warm Springs State Hospital Sector Geothermal energy Type Space Heating Location Warm Springs, Montana Coordinates 46.1813145°, -112.78476° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

322

Legendary West Virginia Senior Citizen Stays Warm With New Furnace |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Legendary West Virginia Senior Citizen Stays Warm With New Furnace Legendary West Virginia Senior Citizen Stays Warm With New Furnace Legendary West Virginia Senior Citizen Stays Warm With New Furnace April 1, 2010 - 7:16pm Addthis Joshua DeLung For the last 56 years, Beulah Sisk has lived in the same house in Princeton, W.Va. Beulah, who worked for 25 years at Lloyd's Pastry Shop, is well known in Princeton. People still see her on the streets today and recognize her as an icon in the community. After a wind storm damaged Beulah's home last year, it came as no surprise when a senior center employee, concerned for Beulah's safety, told her about the weatherization assistance program. "A tree fell on my house and damaged a lot of things, including my furnace," Beulah says. "I tried to have it repaired, but it still

323

NETL: Gasification Systems - Warm Gas Multi-Contaminant Removal System  

NLE Websites -- All DOE Office Websites (Extended Search)

Warm Gas Multi-Contaminant Removal System Warm Gas Multi-Contaminant Removal System Project Number: DE-SC00008243 TDA Research, Inc. is developing a high-capacity, low-cost sorbent that removes anhydrous ammonia (NH3), mercury (Hg), and trace contaminants from coal- and coal/biomass-derived syngas. The clean-up system will be used after the bulk warm gas sulfur removal step, and remove NH3 and Hg in a regenerable manner while irreversibly capturing all other trace metals (e.g., Arsenic, Selenium) reducing their concentrations to sub parts per million (ppm) levels. Current project plans include identifying optimum chemical composition and structure that provide the best sorbent performance for removing trace contaminants, determining the effect of operating parameters, conducting multiple-cycle experiments to test the life of the sorbent for NH3 and Hg removal, and conducting a preliminary design of the sorbent reactor.

324

Stay Warm in Your Apartment | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stay Warm in Your Apartment Stay Warm in Your Apartment Stay Warm in Your Apartment October 19, 2009 - 11:43am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy Yes, the Ghost of Winters Future has officially knocked on our front doors again. The leaves here in Washington, D.C., have started to turn toward their colorful crescendo, that spectacular finish before their end on the chilly ground. It makes me cold just thinking about it. Like me, you're probably not opening your windows much at night anymore. I'm holding out still, surrendering a little more of my beloved fresh air each night and dreading that first night when I have to pop the heater on. Last night, I only open my window about an inch. I guess that means it's time to think about locking out the cold air once and for all this year.

325

Stay Warm in Your Apartment | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stay Warm in Your Apartment Stay Warm in Your Apartment Stay Warm in Your Apartment October 19, 2009 - 11:43am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy Yes, the Ghost of Winters Future has officially knocked on our front doors again. The leaves here in Washington, D.C., have started to turn toward their colorful crescendo, that spectacular finish before their end on the chilly ground. It makes me cold just thinking about it. Like me, you're probably not opening your windows much at night anymore. I'm holding out still, surrendering a little more of my beloved fresh air each night and dreading that first night when I have to pop the heater on. Last night, I only open my window about an inch. I guess that means it's time to think about locking out the cold air once and for all this year.

326

Roosevelt Warm Springs Institute for Rehab. Space Heating Low Temperature  

Open Energy Info (EERE)

Space Heating Low Temperature Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Roosevelt Warm Springs Institute for Rehab. Space Heating Low Temperature Geothermal Facility Facility Roosevelt Warm Springs Institute for Rehab. Sector Geothermal energy Type Space Heating Location Warm Springs, Georgia Coordinates 32.8904081°, -84.6810381° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

327

Rising Sea Levels Due to Global Warming Are Unstoppable  

NLE Websites -- All DOE Office Websites (Extended Search)

Rising Sea Levels Rising Sea Levels Due to Global Warming Are Unstoppable Rising Sea Levels Due to Global Warming Are Unstoppable Mitigation can slow down but not prevent sea level rise for centuries to come August 5, 2013 Contact: Linda Vu, Lvu@lbl.gov, +1 510 495 2402 washington.jpg Because seawater absorbs heat more slowly than the atmosphere above it, our oceans won't feel the full impact of the greenhouse gases already in the air for hundreds of years. Warm water expands, raising sea levels. (Courtesy W. Washington) Select to enlarge. A reduction in greenhouse gas emissions could greatly lessen the impacts of climate change. However, the gases already added to the atmosphere ensure a certain amount of sea level rise to come, even if future emissions are reduced. A study by National Center for Atmospheric Research (NCAR)

328

ARM - Publications: Science Team Meeting Documents: Tropical Warm Pool  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Warm Pool International Cloud Experiment Tropical Warm Pool International Cloud Experiment May, Peter Bureau or Meteorology Research Centre Mather, James Pacific Northwest National Laboratory Jakob, Christian BMRC One of the most complete data sets describing tropical convection ever collected will result from the upcoming Tropical Warm Pool International Cloud Experiment (TWPICE) in the area around Darwin in late 2005 and early 2006. The aims of the experiment will be to examine convective cloud systems from their initial stages through to the decay of the cirrus generated and to measure their impact on the environment. The experiment design includes an unprecedented network of ground-based observations (soundings, active and passive remote sensors) combined with a large range of low, mid and high altitude aircraft for in-situ and remote sensing

329

Atmospheric Radiation Measurement Tropical Warm Pool International Cloud Experiment  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Warm Pool Tropical Warm Pool International Cloud Experiment General Description The Tropical Warm Pool - International Cloud Experiment (TWP-ICE) was a collaborative effort led by the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Program and the Australian Bureau of Meteorology. Beginning January 21 and ending February 14, 2006, the experiment was conducted in the region near the ARM Climate Research Facility in Darwin, Northern Australia. This permanent facility is fully equipped with sophisticated instruments for measuring cloud and other atmospheric properties to provide a long-term record of continuous observational data. Measurements obtained from the other experiment components (explained below) will complement this dataset to provide a detailed description of the tropical atmosphere.

330

The Matter of Detailing  

Science Journals Connector (OSTI)

Project success is truly a “matter of detailing”! So, it is imperative that the strongest of cases must be made for the process of detailing!

Ralph W. Liebing RA; CSI; CPCA; CBO

2011-01-01T23:59:59.000Z

331

EMSL - soil organic matter  

NLE Websites -- All DOE Office Websites (Extended Search)

soil-organic-matter en Structures and Stabilities of (MgO)n Nanoclusters. http:www.emsl.pnl.govemslwebpublicationsstructures-and-stabilities-mgon-nanoclusters

332

Dark matter at colliders  

SciTech Connect

We show that colliders can impose strong constraints on dark matter. We take an effective field theory approach where dark matter couples to quarks and gluons through high dimensional operators. We discuss limits on interactions of dark matter and hadronic matter from the ATLAS experiment at the Large Hadron Collider (LHC). For spin-independent scattering, the LHC limits are stronger than those from direct detection experiments for light WIMPs. For spin-dependent scattering, the LHC sets better limits over much of parameter space.

Yu Haibo [Department of Physics, University of Michigan, Ann Arbor, MI, 48109 (United States)

2013-05-23T23:59:59.000Z

333

Global warming description using Daisyworld model with greenhouse gases  

Science Journals Connector (OSTI)

Abstract Daisyworld is an archetypal model of the earth that is able to describe the global regulation that can emerge from the interaction between life and environment. This article proposes a model based on the original Daisyworld considering greenhouse gases emission and absorption, allowing the description of the global warming phenomenon. Global and local analyses are discussed evaluating the influence of greenhouse gases in the planet dynamics. Numerical simulations are carried out showing the general qualitative behavior of the Daisyworld for different scenarios that includes solar luminosity variations and greenhouse gases effect. Nonlinear dynamics perspective is of concern discussing a way that helps the comprehension of the global warming phenomenon.

Susana L.D. Paiva; Marcelo A. Savi; Flavio M. Viola; Albino J.K. Leiroz

2014-01-01T23:59:59.000Z

334

Can Reducing Black Carbon Emissions Counteract Global Warming?  

Science Journals Connector (OSTI)

Can Reducing Black Carbon Emissions Counteract Global Warming? ... It has been known for over 30 years that aerosols affect the Earth's radiative balance:? reflective particles (such as sulfates) have a cooling effect, and light-absorbing particles (such as BC) warm the system (3). ... Although Figure 3 shows many of the high-emitting devices that contribute most to global BC concentrations, much of the world's fuel is burned in low-emitting technologies such as pulverized coal burners and gasoline vehicles with current technology. ...

Tami C. Bond; Haolin Sun

2005-07-06T23:59:59.000Z

335

American Public Opinion on Global Warming in the American States: An In-Depth Study of Florida, Maine, and Massachusetts  

E-Print Network (OSTI)

1 American Public Opinion on Global Warming in the American States: An In-Depth Study of Florida Public Opinion on Global Warming in the American States: An In-Depth Study of Florida, Maine warming has been happening � What might have caused global warming � Whether global warming

Ford, Andrew

336

Money Matters Parent Presentation  

E-Print Network (OSTI)

Money Matters Parent Presentation Presented by Becky Lore June 7, 2014 #12;Money Matters · Dates.fcac-acfc.gc.ca · Gail Vaz-Oxlade My Money, My Choices www.gailvazoxlade.com · Money Mentors www.moneymentors.ca/ · Money

Seldin, Jonathan P.

337

Laser-matter interaction at intensities of 10 sup 12 W/cm sup 2 and below  

SciTech Connect

For single pulsed laser-matter interactions at sufficiently high intensity, the electron density in the ablated vapor is large enough to absorb the laser radiation before it can reach the dense target material. The resulting interaction can be described in terms of energy flows: laser energy is absorbed in the plasma in front of the target and reappears as thermal electron energy and secondary radiation, part of which impinges upon and heats the dense target material at the dense material-vapor interface. This heating in turn drives ablation, thereby providing a self-consistent mass source for the laser absorption, energy conversion, and transmission. Under typical conditions of laser intensity, pulse width and spot size, the flow patterns can be strongly two-dimensional. We have modified the inertial confinement fusion code LASNEX to simulate gaseous and some dense material aspects for the relatively low intensity, long-pulse-length conditions to interest in many laser-related applications. The unique aspect to our treatment consists of an ablation model which defines a dense material vapor interface and then calculates the mass flow across this interface. The model, at present, treats the dense material as a rigid, two-dimensional simulational mass and heat reservoir, suppressing all hydrodynamical motion in the dense material. The modeling is being developed and refined through simulation of experiments, as well as through the investigation of internal inconsistencies, and some simulations of model problems. 5 refs., 14 figs., 1 tab.

Goldman, S.R.; Dingus, R.S.; Kirkpatrick, R.C.; Kopp, R.A.; Stover, E.K.; Watt, R.G.

1990-01-01T23:59:59.000Z

338

Persistence of soil organic matter as an ecosystem property  

SciTech Connect

Globally, soil organic matter (SOM) contains more than three times as much carbon as either the atmosphere or terrestrial vegetation. Yet it remains largely unknown why some SOM persists for millennia whereas other SOM decomposes readily—and this limits our ability to predict how soils will respond to climate change. Recent analytical and experimental advances have demonstrated that molecular structure alone does not control SOM stability: in fact, environmental and biological controls predominate. Here we propose ways to include this understanding in a new generation of experiments and soil carbon models, thereby improving predictions of the SOM response to global warming.

Schmidt, M.W.; Torn, M. S.; Abiven, S.; Dittmar, T.; Guggenberger, G.; Janssens, I.A.; Kleber, M.; Kögel-Knabner, I.; Lehmann, J.; Manning, D.A.C.; Nannipieri, P.; Rasse, D.P.; Weiner, S.; Trumbore, S.E.

2011-08-15T23:59:59.000Z

339

Is a Simple Collisionless Relic Dark Matter Particle Ruled Out?  

E-Print Network (OSTI)

The central densities of dark matter (DM) halos are much lower than predicted in cold DM models of structure formation. Confirmation that they have cores with a finite central density would allow us to rule out many popular types of collisionless particle as candidates for DM. Any model that leads to cusped halos (such as cold DM) is already facing serious difficulties on small scales and hot DM models have been excluded. Here I show that fermionic warm DM is inconsistent with the wide range of phase space densities in the DM halos of well-observed nearby galaxies.

J. A. Sellwood

2000-04-26T23:59:59.000Z

340

Urban adaptation can roll back warming of emerging megapolitan regions  

Science Journals Connector (OSTI)

...As A2 ICLUS with hybrid roofs All experiments were repeated...prompt increased energy demand to warm indoor environments...statistically significant grid cells as described and...statistically significant grid cells as described...changes in seasonal energy demand and modulation...market penetration. Infrastructure investments to 2100...

Matei Georgescu; Philip E. Morefield; Britta G. Bierwagen; Christopher P. Weaver

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Non-linear Langmuir waves in a warm quantum plasma  

SciTech Connect

A non-linear differential equation describing the Langmuir waves in a warm quantum electron-ion plasma has been derived. Its numerical solutions of the equation show that ordinary electronic oscillations, similar to the classical oscillations, occur along with small-scale quantum Langmuir oscillations induced by the Bohm quantum force.

Dubinov, Alexander E., E-mail: dubinov-ae@yandex.ru; Kitaev, Ilya N. [Russian Federal Nuclear Center—All-Russia Scientific and Research Institute of Experimental Physics (RFNC-VNIIEF), 37 Mira Ave., Nizhny Novgorod region, Sarov 607188 (Russian Federation); Sarov State Institute of Physics and Technology (SarFTI), National Research Nuclear University MEPhI, 607186 Sarov, Nizhny Novgorod region (Russian Federation)

2014-10-15T23:59:59.000Z

342

Fishing for an Analogy to Global Warming William Menke  

E-Print Network (OSTI)

Fishing for an Analogy to Global Warming William Menke That our beloved Wilson Lake once harbored and smaller fish. Any sort of unfavorable weather conditions could reduce the supply of food, which in turn, but whether the salt has affected the fish is hotly debated. Some environmentalists say that increased

Menke, William

343

Isentropic constraints by midlatitude surface warming on the Arctic midtroposphere  

E-Print Network (OSTI)

; Pauluis et al., 2011]. When condensation and precipitation occur within the warm conveyor belt of synoptic eddies [Eckhardt et al., 2004], ascending parcels convert their e into along trajectories aligned with surfaces of constant e. Parcels returning in the equatorward branch of synoptic eddies are dry

344

The Impact Brought by Global Warming and Countermeasures  

Science Journals Connector (OSTI)

Greenhouse gas is mainly composed of CO2, CH4 and N2O etc., while global warming is resulting from human’s misconducts of ... burning tremendous fossil fuels such as petroleum and coal etc., which augment the CO2

Cuifeng Huo; Menghan Xu; Xuan Ding

2013-01-01T23:59:59.000Z

345

Sweet potatoes are a warm-weather vegetable  

E-Print Network (OSTI)

Sweet potatoes are a warm- weather vegetable related to the morning glory family.Although Louisiana sweet potatoes are often referred to as yams, they truly are sweet potatoes. The Louisiana producers began calling the orange-fleshed sweet potatoes grown in Louisiana"yams" to distinguish them from

346

Origins of the extremely warm European fall of 2006  

E-Print Network (OSTI)

Origins of the extremely warm European fall of 2006 Julien Cattiaux R. Vautard, P. Yiou LSCE ­ IPSL France European Geosciences Union General Assembly 2009 CL1 Session: Climate Extremes and Impacts. #12.Cattiauxetal.,OriginsoftheextremelywarmEuropeanfallof2006 European temperatures and atmospheric circulation #12;The best correlation is found for the V-Wind

Ribes, Aurélien

347

Matter in Extreme Conditions Instrument - Conceptual Design Report  

SciTech Connect

The SLAC National Accelerator Laboratory (SLAC), in collaboration with Argonne National Laboratory (ANL), Lawrence Livermore National Laboratory (LLNL), and the University of California at Los Angeles (UCLA), is constructing a Free-Electron Laser (FEL) research facility. The FEL has already met its performance goals in the wavelength range 1.5 nm - 0.15 nm. This facility, the Linac Coherent Light Source (LCLS), utilizes the SLAC 2-Mile Linear Accelerator (linac) and will produce sub-picosecond pulses of short wavelength X-rays with very high peak brightness and almost complete transverse coherence. The final one-third of the SLAC linac is used as the source of electrons for the LCLS. The high energy electrons are transported across the SLAC Research Yard, into a tunnel which houses a long undulator. In passing through the undulator, the electrons are bunched by the force of their own synchrotron radiation and produce an intense, monochromatic, spatially coherent beam of X-rays. By varying the electron energy, the FEL X-ray wavelength is tunable from 1.5 nm to 0.15 nm. The LCLS includes two experimental halls as well as X-ray optics and infrastructure necessary to create a facility that can be developed for research in a variety of disciplines such as atomic physics, materials science, plasma physics and biosciences. This Conceptual Design Report, the authors believe, confirms the feasibility of designing and constructing an X-ray instrument in order to exploit the unique scientific capability of LCLS by creating extreme conditions and study the behavior of plasma under those controlled conditions. This instrument will address the Office of Science, Fusion Energy Sciences, mission objective related to study of Plasma and Warm Dense Matter as described in the report titled LCLS, the First Experiments, prepared by the LCLS Scientific Advisory Committee (SAC) in September 2000. The technical objective of the LCLS Matter in Extreme Conditions (MEC) Instrument project is to design, build, and install at the LCLS an X-ray instrument that will complement the initial instrument suite included in the LCLS construction and the LUSI Major Item of Equipment (MIE) Instruments. As the science programs advance and new technological challenges appear, instrumentation must be developed and ready to conquer these new opportunities. The MEC concept has been developed in close consultation with the scientific community through a series of workshops team meetings and focused reviews. In particular, the MEC instrument has been identified as meeting one of the most urgent needs of the scientific community based on the advice of the LCLS Scientific Advisory Committee (SAC) in response to an open call for letters of intent (LOI) from the breadth of the scientific community. The primary purpose of the MEC instrument is to create High Energy Density (HED) matter and measure its physical properties. There are three primary elements of the MEC instrument: (A) Optical laser drivers that will create HED states by irradiation in several ways and provide diagnostics capability; (B) The LCLS x-ray free electron laser, which will provide the unique capability to create, probe and selectively pump HED states; and, (C) A suite of diagnostic devices required to observe the evolution of the HED state. These elements when combined in the MEC instrument meet the 'Mission Need' as defined in CD-0. For the purposes of the description we separate the types of experiments to be performed into three categories: (1) High pressure: Here we are interested in the generation of high pressure using the optical lasers to irradiate a surface that ablates and drives a pressure wave into a sample, similar to a piston. The pressures that can be reached exceed 1 Mbar and the properties of interest are for example, the reflectivity, conductivity, opacity as well as the changes driven by the pressure wave on, e.g., condensed matter structure. These phenomena will be studied by means of diffraction measurements, measurements of the pressure wave characteristics, in situ probing by

Boyce, R.F.; Boyce, R.M.; Haller, G.; Hastings, J.B.; Hays, G.; Lee, H.J.; /SLAC; Lee, R.W.; /LLNL, Livermore; Nagler, B.; /Rutherford; Scharfenstein, M.; Marsh, D.; White, W.E.; /SLAC; ,

2009-12-09T23:59:59.000Z

348

PROCEEDINGS OF RIKEN/BNL RESEARCH CENTER WORKSHOP, EQUILIBRIUM AND NON-EQUILIBRIM ASPECTS OF HOT, DENSE QCD, VOLUME 28.  

SciTech Connect

The Relativistic Heavy Ion Collider (RHIC) at Brookhaven, beginning operation this year, and the Large Hadron Collider (LHC) at CERN, beginning operation {approximately}2005, will provide an unprecedented range of energies and luminosities that will allow us to probe the Gluon-Quark plasma. At RHIC and LHC, at central rapidity typical estimates of energy densities and temperatures are e * 1-10 GeV/fm3 and T0 * 300 - 900 MeV. Such energies are well above current estimates for the GQ plasma. Initially, this hot, dense plasma is far from local thermal equilibrium, making the theoretical study of transport phenomena, kinetic and chemical equilibration in dense and hot plasmas, and related issues a matter of fundamental importance. During the last few years a consistent framework to study collective effects in the Gluon-Quark plasma, and a microscopic description of transport in terms of the hard thermal (and dense) loops resummation program has emerged. This approach has the potential of providing a microscopic formulation of transport, in the regime of temperatures and densities to be achieved at RHIC and LHC. A parallel development over the last few years has provided a consistent formulation of non-equilibrium quantum field theory that provides a real-time description of phenomena out of equilibrium. Novel techniques including non-perturbative approaches and the dynamical renormalization group techniques lead to new insights into transport and relaxation. A deeper understanding of collective.excitations and transport phenomena in the GQ plasma could lead to recognize novel potential experimental signatures. New insights into small-c physics reveals a striking similarity between small-c and hard thermal loops, and novel real-time numerical simulations have recently studied the parton distributions and their thermalizations in the initial stages of a heavy ion collision.

De Vega, H.J.; Boyanovsky, D. [and others

2000-07-17T23:59:59.000Z

349

PROCEEDINGS OF RIKEN/BNL RESEARCH CENTER WORKSHOP, EQUILIBRIUM AND NON-EQUILIBRIM ASPECTTS OF HOT, DENSE QCD, VOLUME 28.  

SciTech Connect

The Relativistic Heavy Ion Collider (RHIC) at Brookhaven, beginning operation this year, and the Large Hadron Collider (LHC) at CERN, beginning operation {approximately}2005, will provide an unprecedented range of energies and luminosities that will allow us to probe the Gluon-Quark plasma. At RHIC and LHC, at central rapidity typical estimates of energy densities and temperatures are e * 1-10 GeV/fm3 and T0 * 300 - 900 MeV. Such energies are well above current estimates for the GQ plasma. Initially, this hot, dense plasma is far from local thermal equilibrium, making the theoretical study of transport phenomena, kinetic and chemical equilibration in dense and hot plasmas, and related issues a matter of fundamental importance. During the last few years a consistent framework to study collective effects in the Gluon-Quark plasma, and a microscopic description of transport in terms of the hard thermal (and dense) loops resummation program has emerged. This approach has the potential of providing a microscopic formulation of transport, in the regime of temperatures and densities to be achieved at RHIC and LHC. A parallel development over the last few years has provided a consistent formulation of non-equilibrium quantum field theory that provides a real-time description of phenomena out of equilibrium. Novel techniques including non-perturbative approaches and the dynamical renormalization group techniques lead to new insights into transport and relaxation. A deeper understanding of collective.excitations and transport phenomena in the GQ plasma could lead to recognize novel potential experimental signatures. New insights into small-c physics reveals a striking similarity between small-c and hard thermal loops, and novel real-time numerical simulations have recently studied the parton distributions and their thermalizations in the initial stages of a heavy ion collision.

DE VEGA,H.J.; BOYANOVSKY,D. [and others

2000-07-17T23:59:59.000Z

350

Anomalous thermodynamics and phase transitions of neutron-star matter  

E-Print Network (OSTI)

In this letter we show that the presence of the long-range Coulomb force in dense stellar matter implies that the total charge cannot be associated with a chemical potential, even if it is a conserved quantity. As a further consequence, the analytical properties of the partition sum are modified, changing the order of the phase transitions and affecting the possible occurrence of critical behaviours. The peculiar thermodynamic properties of the system can be understood introducing a model hamiltonian in which each charge is independently neutralized by a uniform background of opposite charge.

P. Chomaz; F. Gulminelli; C. Ducoin; P. Napolitani; K. H. O. Hasnaoui

2005-07-27T23:59:59.000Z

351

Interaction of graphite with a hot, dense deuterium plasma  

SciTech Connect

The erosion of ATJ-S graphite caused by a hot, dense deuterium plasma has been investigated experimentally. The plasma was produced in an electromagnetic shock tube. Plasma characteristics were typically: ion temperature approx. = 800 eV (approx. 1 x 10/sup 7/ /sup 0/K), number density approx. = 10/sup 16//cm/sup 3/, and transverse magnetic field approx. = 1 tesla. The energetic ion flux, phi, to the sample surfaces was approx. 10/sup 23/ ions/cm/sup 2/-sec for a single pulse duration of approx. 0.1 usec. Sample surfaces were metallographically prepared and examined with a scanning electron microscope before and after exposure.

Desko, J.C. Jr.

1980-01-01T23:59:59.000Z

352

Coupling Lattice Boltzmann and Molecular Dynamics models for dense fluids  

E-Print Network (OSTI)

We propose a hybrid model, coupling Lattice Boltzmann and Molecular Dynamics models, for the simulation of dense fluids. Time and length scales are decoupled by using an iterative Schwarz domain decomposition algorithm. The MD and LB formulations communicate via the exchange of velocities and velocity gradients at the interface. We validate the present LB-MD model in simulations of flows of liquid argon past and through a carbon nanotube. Comparisons with existing hybrid algorithms and with reference MD solutions demonstrate the validity of the present approach.

A. Dupuis; E. M. Kotsalis; P. Koumoutsakos

2006-10-27T23:59:59.000Z

353

Nonlinear elasto-plastic model for dense granular flow  

E-Print Network (OSTI)

This work proposes a model for granular deformation that predicts the stress and velocity profiles in well-developed dense granular flows. Recent models for granular elasticity (Jiang and Liu 2003) and rate-sensitive plastic flow (Jop et al. 2006) are reformulated and combined into one universal granular continuum law, capable of predicting flowing regions and stagnant zones simultaneously in any arbitrary 3D flow geometry. The unification is performed by justifying and implementing a Kroner-Lee elasto-plastic decomposition, with care taken to ensure certain continuum physical principles are necessarily upheld. The model is then numerically implemented in multiple geometries and results are compared to experiments and discrete simulations.

Ken Kamrin

2009-05-07T23:59:59.000Z

354

Comparative Characteristics of Four Small Dense Plasma Focus Devices  

Science Journals Connector (OSTI)

Four small (in the energy range 2–7 kJ) dense plasma focus devices were elaborated and put into operation in the last several years: ING?103 DPF?10 PF?5M and DPF?6. Each device has its own parameters (energy current rise?time and magnitude pulse duration of ionizing radiation of different types weight etc.) and together with the specific discharge chambers they are optimized for various applications. Comparative description of functioning parameters of these devices together with the results of the most successful applications is presented in the report.

A. V. Dubrovsky; V. A. Gribkov; V. N. Pimenov; M. Scholz

2008-01-01T23:59:59.000Z

355

High contrast radiography using a small dense plasma focus  

Science Journals Connector (OSTI)

Radiographs are obtained with a small ( 4.6 kJ ) dense plasma focus machine using the x-rays which cross a 300 ? m aluminum window on the axis. Contrast is improved by inserting an iron needle on the tip of the electrode. Measurements with TLD-100 dosimeters have shown the average dose to increase from 0.077 ± 0.006 mGy /shot when a hollow cathode is used to 0.11 ± 0.01 mGy /shot with the needle. The spectrum is estimated using aluminum filters and the effective equivalent energy is found to be in the range of 20 – 25 keV .

F. Castillo; I. Gamboa-deBuen; J. J. E. Herrera; J. Rangel; S. Villalobos

2008-01-01T23:59:59.000Z

356

Development of High-Volume Warm Forming of Low-Cost Magnesium...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 - Development of High Volume Warm Forming of Low Cost Magnesium Sheet edm2@chrysler.com February 28, 2008 Development of High-Volume Warm Forming of Low- Cost Magnesium Sheet...

357

Development of High-Volume Warm Forming of Low-Cost Magnesium...  

Energy Savers (EERE)

Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet 2010 DOE Vehicle Technologies and Hydrogen...

358

Heralding Calamity of Global Warming and Chemistry Role Through a Chorus  

Science Journals Connector (OSTI)

Global warming needs imminent attention in searching for its ... female undergraduates performed a chorus related to the global warming. The performance accompanied a narration of chemistry ... music tunes repres...

Y.H. Chung

2009-01-01T23:59:59.000Z

359

The Effect of Diurnal Sea Surface Temperature Warming on Climatological Air–Sea Fluxes  

E-Print Network (OSTI)

Diurnal sea surface warming affects the fluxes of latent heat, sensible heat, and upwelling longwave radiation. Diurnal warming most typically reaches maximum values of 3°C, although very localized events may reach 7°–8°C. ...

Clayson, Carol Anne

360

Simulation of gas production from hydrate reservoir by the combination of warm water flooding and depressurization  

Science Journals Connector (OSTI)

Gas production from hydrate reservoir by the combination of warm water flooding and depressurization is proposed, which can overcome ... gas production by the combination of warm water flooding and depressurizati...

YuHu Bai; QingPing Li

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Development of High-Volume Warm Forming of Low-Cost Magnesium...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet Presentation from the U.S. DOE Office of...

362

Development of High-Volume Warm Forming of Low-Cost Magnesium...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

More Documents & Publications Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet Development of High-Volume Warm Forming of Low-Cost Magnesium Sheet Magnesium...

363

Chimneys: Warm and Cozy or Easy Exit for Your Heat? | Department...  

Energy Savers (EERE)

fire isn't burning. Visit the Stay Warm, Save Money site for other ways you can reduce heat loss from the fireplace. Addthis Related Articles A warm fireplace can save you...

364

Zonal displacement of western Pacific warm pool and zonal wind anomaly over the Pacific Ocean  

Science Journals Connector (OSTI)

The thermal condition anomaly of the western Pacific warm pool and its zonal displacement have ... impact of the zonal wind anomaly over the Pacific Ocean on zonal displacement of the warm pool ... to the zonal w...

Qilong Zhang ???; Qinghua Zhang ???…

2007-07-01T23:59:59.000Z

365

Is global warming just a giant natural fluctuation? When estimating voter's intentions, pollsters know that statements like "40%  

E-Print Network (OSTI)

Is global warming just a giant natural fluctuation? When estimating voter theory. So what about global warming? Shouldn't we apply the same warming since the mid-20th century" (IPCC, Assessment Report 5, AR5), then surely

Lovejoy, Shaun

366

The potential to mitigate global warming with no-tillage management is only realized when practised in the long term  

E-Print Network (OSTI)

The potential to mitigate global warming with no-tillageNT adoption reduces the net global warming potential (GWP)soil for purposes of global warming mitigation. Our results

Six, J; Ogle, S M; Breidt, F J; Conant, R T; Mosier, A R; Paustian, K

2004-01-01T23:59:59.000Z

367

The potential impact of global warming on the efficacy of field margins sown for the conservation of bumble-bees  

Science Journals Connector (OSTI)

...Raffaelli The potential impact of global warming on the efficacy of field margins...change. We simulated the effect of global warming on the network of plant-pollinator...future-proof margins against global warming are discussed. climate change...

2010-01-01T23:59:59.000Z

368

Predicting the fate of a living fossil: how will global warming affect sex determination and hatching phenology in tuatara?  

Science Journals Connector (OSTI)

...of a living fossil: how will global warming affect sex determination and hatching...however, an unlikely response to global warming, as many oviparous species are...species with TSD. climate change|global warming|temperature-dependent sex...

2008-01-01T23:59:59.000Z

369

Awareness of Behaviours that Cause and Alleviate Global Warming and Intention to Perform the Behaviours Among Malaysian Educated Laypeople  

Science Journals Connector (OSTI)

Reducing global warming is not simply the domain of government ... , by knowing the right behaviours for mitigating global warming. This study examines Malaysian educated layperson’s knowledge about global warming

Zamzul Rizal Zulkifli; Rosta Harun; Kuang Hock Lim

2014-01-01T23:59:59.000Z

370

The Impact of Global Warming on U.S. Agriculture: An Econometric Analysis of Optimal Growing Conditions  

E-Print Network (OSTI)

Really Bene?t From Global Warming? Accounting for IrrigationR. , The Economics of Global Warming, Washington, D.C. :1992. , “The Impact of Global Warming on Agriculture:

Schlenker, Wolfram; Hanemann, W. Michael; Fisher, Anthony C.

2004-01-01T23:59:59.000Z

371

Multi-Messenger Observations of Neutron Rich Matter  

SciTech Connect

At very high densities, electrons react with protons to form neutron rich matter. This material is central to many fundamental questions in nuclear physics and astrophysics. Moreover, neutron rich matter is being studied with an extraordinary variety of new tools such as the Facility for Rare Isotope Beams (FRIB) and the Laser Interferometer Gravitational Wave Observatory (LIGO). We describe the Lead Radius Experiment (PREX) that uses parity violating electron scattering to measure the neutron radius in 208Pb. This has important implications for neutron stars and their crusts. We discuss X-ray observations of neutron star radii. These also have important implications for neutron rich matter. Gravitational waves (GW) open a new window on neutron rich matter. They come from sources such as neutron star mergers, rotating neutron star mountains, and collective r-mode oscillations. Using large scale molecular dynamics simulations, we find neutron star crust to be very strong. It can support mountains on rotating neutron stars large enough to generate detectable gravitational waves. We believe that combing astronomical observations using photons, GW, and neutrinos, with laboratory experiments on nuclei, heavy ion collisions, and radioactive beams will fundamentally advance our knowledge of compact objects in the heavens, the dense phases of QCD, the origin of the elements, and of neutron rich matter.

Horowitz, C. J. [UTK/ORNL/Indiana University

2012-01-01T23:59:59.000Z

372

DARK MATTER AS AN ACTIVE GRAVITATIONAL AGENT IN CLOUD COMPLEXES  

SciTech Connect

We study the effect that the dark matter background (DMB) has on the gravitational energy content and, in general, on the star formation efficiency (SFE) of a molecular cloud (MC). We first analyze the effect that a dark matter halo, described by the Navarro-Frenk-White density profile, has on the energy budget of a spherical, homogeneous cloud located at different distances from the halo center. We found that MCs located in the innermost regions of a massive galaxy can feel a contraction force greater than their self-gravity due to the incorporation of the potential of the galaxy's dark matter halo. We also calculated analytically the gravitational perturbation that an MC produces over a uniform DMB (uniform at the scales of an MC) and how this perturbation will affect the evolution of the MC itself. The study shows that the star formation in an MC will be considerably enhanced if the cloud is located in a dense and low velocity dark matter environment. We confirm our results by measuring the SFE in numerical simulations of the formation and evolution of MCs within different DMBs. Our study indicates that there are situations where the dark matter's gravitational contribution to the evolution of the MCs should not be neglected.

Suarez-Madrigal, Andres; Ballesteros-Paredes, Javier; Colin, Pedro; D'Alessio, Paola, E-mail: a.suarez@crya.unam.mx [Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico, Apdo. Postal 72-3 (Xangari), Morelia, Michocan, Mexico C.P. 58089 (Mexico)

2012-04-01T23:59:59.000Z

373

Matter Waves and Electricity  

Science Journals Connector (OSTI)

Classical four-dimensional relativity gives a most natural and harmonious interpretation of the three basic phenomena of nature: gravity, electricity, and the wave structure of matter, provided that the basic assumptions of the Einsteinian theory are modified in two respects: (1) the fundamental invariant of the action principle is chosen as a quadratic instead of a linear function of the curvature components; (2) the static equilibrium of the world is replaced by a dynamic equilibrium. Electricity comes out as a second-order resonance effect of the matter waves. The matter waves are gravitational waves but superposed not on an empty Euclidean space but on a space of high average curvature.

Cornelius Lanczos

1942-06-01T23:59:59.000Z

374

The rheology and microstructure of dense suspensions of elastic capsules.  

SciTech Connect

We use a recently developed hybrid numerical technique [MacMeccan et al. (2009)] that combines a lattice-Boltzmann (LB) fluid solver with a finite element (FE) solid-phase solver to study suspensions of elastic capsules. The LB method recovers the Navier-Stokes hydrodynamics, while the linear FE method models the deformation of fluid-filled elastic capsules for moderate levels of deformation. The simulation results focus on accurately describing the suspension rheology, including the particle pressure, and relating these changes to changes in the microstructure. Simulations are performed with hundreds of particles in unbounded shear allowing an accurate description of the bulk suspension rheology and microstructure. In contrast to rigid spherical particles, elastic capsules are capable of producing normal stresses in the dilute limit. For dense suspensions, the first normal stress difference is of particular interest. The first normal stress difference, which is negative for dense rigid spherical suspensions, undergoes a sign change at moderate levels of deformation of the suspended capsules.

Reasor, Daniel (Georgia Institute of Tecnnology); Clausen, Jonathan; Aidun, Cyrus (Georgia Institute of Tecnnology)

2010-11-01T23:59:59.000Z

375

Report narrows down impact of global warming People will soon be able to find out how  

E-Print Network (OSTI)

Report narrows down impact of global warming People will soon be able to find out how vulnerable their own local area is to global warming, thanks to a new report led by UEA. STARDEX, a European Union is taken to reduce human-induced global warming. "Although more research is needed to increase our

Feigon, Brooke

376

A SLIPPERY SLOPE: HOW MUCH GLOBAL WARMING CONSTITUTES "DANGEROUS ANTHROPOGENIC INTERFERENCE"?  

E-Print Network (OSTI)

A SLIPPERY SLOPE: HOW MUCH GLOBAL WARMING CONSTITUTES "DANGEROUS ANTHROPOGENIC INTERFERENCE on the global warming that can be tolerated without risking dangerous anthropogenic interference with climate. I" mainly as a metaphor for the danger posed by global warming. So I changed "Hell" to "disaster." What

Hansen, James E.

377

Global warming, Bergmann's rule and body mass are they related? The chukar partridge (Alectoris chukar) case  

E-Print Network (OSTI)

Global warming, Bergmann's rule and body mass ± are they related? The chukar partridge (Alectoris of chukar partridges Alectoris chukar has changed as a result of global warming. Body mass showed warming, Israel INTRODUCTION Recent global environmental changes are providing scientists

Yom-Tov, Yoram

378

Can Oceanic Freshwater Flux Amplify Global Warming? LIPING ZHANG AND LIXIN WU  

E-Print Network (OSTI)

Can Oceanic Freshwater Flux Amplify Global Warming? LIPING ZHANG AND LIXIN WU Physical Oceanography in global warming are studied using simulations of a climate model in which the freshwater flux changes that the warm climate leads to an acceleration of the global water cycle, which causes freshening in the high

379

Needed: A Realistic Strategy for Global Warming Henry D. Jacoby, Ronald G. Prinn and Richard Schmalensee  

E-Print Network (OSTI)

Needed: A Realistic Strategy for Global Warming Henry D. Jacoby, Ronald G. Prinn and Richard of this issue. One day we hear that all responsible scientists agree that global warming is a dagger be slashed immediately to save our planet. The next day we're told that global warming is the illegitimate

380

Cumulative carbon emissions, emissions floors and short-term rates of warming: implications for policy  

Science Journals Connector (OSTI)

...link between peak human-induced global warming and cumulative carbon emissions...in avoiding some level of peak global warming. The recent Copenhagen Accord...impacts of climate change, even if global warming does remain below 2C [27,28...

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Role of global warming on the statistics of record-breaking temperatures S. Redner1,  

E-Print Network (OSTI)

Role of global warming on the statistics of record-breaking temperatures S. Redner1, * and Mark R in Philadelphia, as a function of the number of years of observation. We then consider the case of global warming question arises: is global warming the cause of such heat waves or are they merely statistical fluctuations

Redner, Sidney

382

LETTER doi:10.1038/nature12156 Signature of ocean warming in global fisheries catch  

E-Print Network (OSTI)

LETTER doi:10.1038/nature12156 Signature of ocean warming in global fisheries catch William W. L changes in sea surface temperature5 . This study shows that ocean warming has already affected global. Cheung1 , Reg Watson2 & Daniel Pauly3 Marine fishes and invertebrates respond to ocean warming through

Pauly, Daniel

383

Global Warming Twenty Years Later: Tipping Points Near James Hansen1  

E-Print Network (OSTI)

Global Warming Twenty Years Later: Tipping Points Near James Hansen1 My presentation today is exactly 20 years after my 23 June 1988 testimony to Congress, which alerted the public that global warming has developed between what is understood about global warming by the relevant scientific community

Hansen, James E.

384

Can ozone depletion and global warming interact to produce rapid climate change?  

E-Print Network (OSTI)

Can ozone depletion and global warming interact to produce rapid climate change? Dennis L. Hartmann of Climate Change (IPCC) assess- ment of the status of global warming, which reported that winter stratospheric ozone depletion and greenhouse warming are possible. These interactions may be responsible

Limpasuvan, Varavut

385

Mechanisms for Tropical Tropospheric Circulation Change in Response to Global Warming*  

E-Print Network (OSTI)

Mechanisms for Tropical Tropospheric Circulation Change in Response to Global Warming* JIAN MA change in global warming is studied by comparing the response of an atmospheric general circulation model globally in response to SST warming. A diagnostic framework is developed based on a linear baroclinic model

Xie, Shang-Ping

386

Global warming shifts Pacific tropical cyclone location MinHo Kwon,1,3  

E-Print Network (OSTI)

Global warming shifts Pacific tropical cyclone location Tim Li,1 MinHo Kwon,1,3 Ming Zhao,3 Jong) is used to investigate the change of tropical cyclone frequency in the North Pacific under global warming, and W. Yu (2010), Global warming shifts Pacific tropical cyclone location, Geophys. Res. Lett., 37, L

Li, Tim

387

Warming and nitrogen affect size structuring and density dependence in a host–parasitoid food web  

Science Journals Connector (OSTI)

...effects. herbivore|global warming|predator-prey...how co-occurring global change drivers...artificial field warming experiment with factorial...Wardle, D. A. 2008 Global change and species...Thompson, P. L. 2012 Warming shifts top-down...

2012-01-01T23:59:59.000Z

388

Why are climate models reproducing the observed global surface warming so well?  

E-Print Network (OSTI)

Why are climate models reproducing the observed global surface warming so well? Reto Knutti1 global surface warming so well?, Geophys. Res. Lett., 35, L18704, doi:10.1029/ 2008GL034932. 1 models reproduce the observed surface warming better than one would expect given the uncertainties

Fischlin, Andreas

389

Journal of Mammalogy, 84(2):354368, 2003 MAMMALIAN RESPONSE TO GLOBAL WARMING ON VARIED  

E-Print Network (OSTI)

354 Journal of Mammalogy, 84(2):354­368, 2003 MAMMALIAN RESPONSE TO GLOBAL WARMING ON VARIED how Rocky Mountain mam- malian communities changed during past global warming events characterized not) in different ways. Nevertheless, examination of past global warming episodes suggested

California at Berkeley, University of

390

Response of the Zonal Mean Atmospheric Circulation to El Nio versus Global Warming  

E-Print Network (OSTI)

Response of the Zonal Mean Atmospheric Circulation to El Niño versus Global Warming JIAN LU Pacific. The hydrological impacts of global warming also exhibit distinct patterns over the subtropics response to global warming: 1) The increase in static stability of the subtropical and midlatitude

Chen, Gang

391

What should we do about the dangers posed by global warming? Judging by  

E-Print Network (OSTI)

What should we do about the dangers posed by global warming? Judging by the collective actions rainandozonedepletioninanattempt toconfusethepublicaboutthescience of global warming and delay regula- tion of greenhouse of Engineering,itdiffersfromtheothers in its attitude towards those who deny the reality of global warming, or hu

Robock, Alan

392

LETTER doi:10.1038/nature09407 Global metabolic impacts of recent climate warming  

E-Print Network (OSTI)

LETTER doi:10.1038/nature09407 Global metabolic impacts of recent climate warming Michael E. Dillon and projected climate warming2,13,14 . Global warming is probably having profound and diverse effects phenology3,4 , community interactions5 , genetics3,6 and extinctions7 have been attributed to recent global

Huey, Raymond B.

393

Influence of weather and global warming in chloride ingress into concrete: a stochastic approach  

E-Print Network (OSTI)

Influence of weather and global warming in chloride ingress into concrete: a stochastic approach E the influence of weather conditions and global warming on chloride ingress into concrete. The assessment including seasonal variations and global warming is also proposed in this work. Three scenarios of global

Paris-Sud XI, Université de

394

Shortwave and longwave radiative contributions to global warming under increasing CO2  

E-Print Network (OSTI)

global warm- ing, with the world ocean as the primary reservoir for energy accumulation (1). In turn posi- tive, OLR recovers within merely several decades, and any subse- quent global energy accumulation warming is likely caused by enhanced ASR. global warming | climate feedbacks | energy accumulation Global

Battisti, David

395

Constraints on the dark matter particle mass from the number of Milky Way satellites  

SciTech Connect

We have conducted N-body simulations of the growth of Milky Way-sized halos in cold and warm dark matter cosmologies. The number of dark matter satellites in our simulated Milky Ways decreases with decreasing mass of the dark matter particle. Assuming that the number of dark matter satellites exceeds or equals the number of observed satellites of the Milky Way, we derive lower limits on the dark matter particle mass. We find with 95% confidence m{sub s}>13.3 keV for a sterile neutrino produced by the Dodelson and Widrow mechanism, m{sub s}>8.9 keV for the Shi and Fuller mechanism, m{sub s}>3.0 keV for the Higgs decay mechanism, and m{sub WDM}>2.3 keV for a thermal dark matter particle. The recent discovery of many new dark matter dominated satellites of the Milky Way in the Sloan Digital Sky Survey allows us to set lower limits comparable to constraints from the complementary methods of Lyman-{alpha} forest modeling and x-ray observations of the unresolved cosmic x-ray background and of dark matter halos from dwarf galaxy to cluster scales. Future surveys like LSST, DES, PanSTARRS, and SkyMapper have the potential to discover many more satellites and further improve constraints on the dark matter particle mass.

Polisensky, Emil [Naval Research Laboratory, Washington, D.C. 20375 (United States); Department of Astronomy, University of Maryland, College Park, Maryland 20745 (United States); Ricotti, Massimo [Department of Astronomy, University of Maryland, College Park, Maryland 20745 (United States)

2011-02-15T23:59:59.000Z

396

The Heart of Matter  

E-Print Network (OSTI)

In this article I trace the development of the human understanding of the "Heart of Matter" from early concepts of "elements" (or alternatively "Panchmahabhootas") to the current status of "quarks" and "leptons" as the fundamental constituents of matter, interacting together via exchange of the various force carrier particles called "gauge bosons" such as the photon, W/Z-boson etc. I would like to show how our understanding of the fundamental constituents of matter has gone hand in hand with our understanding of the fundamental forces in nature. I will also outline how the knowledge of particle physics at the "micro" scale of less than a Fermi(one millionth of a nanometer), enables us to offer explanations of Cosmological observations at the "macro" scale. Consequently these observations, may in turn, help us address some very fundamental questions of the Physics at the "Heart of the Matter".

Godbole, Rohini M

2010-01-01T23:59:59.000Z

397

The Heart of Matter  

E-Print Network (OSTI)

In this article I trace the development of the human understanding of the "Heart of Matter" from early concepts of "elements" (or alternatively "Panchmahabhootas") to the current status of "quarks" and "leptons" as the fundamental constituents of matter, interacting together via exchange of the various force carrier particles called "gauge bosons" such as the photon, W/Z-boson etc. I would like to show how our understanding of the fundamental constituents of matter has gone hand in hand with our understanding of the fundamental forces in nature. I will also outline how the knowledge of particle physics at the "micro" scale of less than a Fermi(one millionth of a nanometer), enables us to offer explanations of Cosmological observations at the "macro" scale. Consequently these observations, may in turn, help us address some very fundamental questions of the Physics at the "Heart of the Matter".

Rohini M. Godbole

2010-06-30T23:59:59.000Z

398

Atomic dark matter  

SciTech Connect

We propose that dark matter is dominantly comprised of atomic bound states. We build a simple model and map the parameter space that results in the early universe formation of hydrogen-like dark atoms. We find that atomic dark matter has interesting implications for cosmology as well as direct detection: Weak-scale dark atoms can accommodate hyperfine splittings of order 100 keV, consistent with the inelastic dark matter interpretation of the DAMA data while naturally evading direct detection bounds. Moreover, protohalo formation can be suppressed below M{sub proto} ? 10{sup 3}–10{sup 6}M{sub s}un for weak scale dark matter due to Ion-Radiation and Ion-Atom interactions in the dark sector.

Kaplan, David E.; Krnjaic, Gordan Z.; Rehermann, Keith R.; Wells, Christopher M., E-mail: dkaplan@pha.jhu.edu, E-mail: gordan@pha.jhu.edu, E-mail: keith@pha.jhu.edu, E-mail: cwells13@pha.jhu.edu [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218-2686 (United States)

2010-05-01T23:59:59.000Z

399

NERSC Calculations Provide Independent Confirmation of Global Land Warming  

NLE Websites -- All DOE Office Websites (Extended Search)

Calculations Calculations Provide Independent Confirmation of Global Land Warming Since 1901 NERSC Calculations Provide Independent Confirmation of Global Land Warming Since 1901 September 9, 2013 | Tags: Climate Research, Hopper Contact: Jon Bashor, jbashor@lbl.gov, 510-486-5849 campo.jpg These maps show the changes in air temperatures over land as measured using thermometers (left side) and as calculated by the 20th Century Reanalysis project (left side). While more than 80 percent of the observed variation is captured by the computer model, the results show interesting differences in some regions such as the midwestern United States, Argentina and eastern Brazil. The differences may be due previously unrecognized issues with the pressure observations, variations in land use and land cover over time,

400

Warm Springs Greenhouses Greenhouse Low Temperature Geothermal Facility |  

Open Energy Info (EERE)

Greenhouses Greenhouse Low Temperature Geothermal Facility Greenhouses Greenhouse Low Temperature Geothermal Facility Jump to: navigation, search Name Warm Springs Greenhouses Greenhouse Low Temperature Geothermal Facility Facility Warm Springs Greenhouses Sector Geothermal energy Type Greenhouse Location Banks, Idaho Coordinates 44.0804473°, -116.1240151° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Warm Springs Water District District Heating Low Temperature Geothermal  

Open Energy Info (EERE)

Water District District Heating Low Temperature Geothermal Water District District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Warm Springs Water District District Heating Low Temperature Geothermal Facility Facility Warm Springs Water District Sector Geothermal energy Type District Heating Location Boise, Idaho Coordinates 43.6135002°, -116.2034505° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

402

COSMIC RAY HEATING OF THE WARM IONIZED MEDIUM  

SciTech Connect

Observations of line ratios in the Milky Way's warm ionized medium suggest that photoionization is not the only heating mechanism present. For the additional heating to explain the discrepancy, it would have to have a weaker dependence on the gas density than the cooling rate, {Lambda}n{sub e}{sup 2}. Reynolds et al. suggested turbulent dissipation or magnetic field reconnection as possible heating sources. We investigate here the viability of MHD-wave mediated cosmic ray heating as a supplemental heating source. This heating rate depends on the gas density only through its linear dependence on the Alfven speed, which goes as n{sub e}{sup -1/2}. We show that, scaled to appropriate values of cosmic ray energy density, cosmic ray heating can be significant. Furthermore, this heating is stable to perturbations. These results should also apply to warm ionized gas in other galaxies.

Wiener, Joshua; Peng Oh, S. [Department of Physics, University of California, Santa Barbara, CA 93106 (United States)] [Department of Physics, University of California, Santa Barbara, CA 93106 (United States); Zweibel, Ellen G. [Departments of Astronomy and Physics, and Center for Magnetic Self-Organization, University of Wisconsin-Madison, Madison, WI 53706 (United States)] [Departments of Astronomy and Physics, and Center for Magnetic Self-Organization, University of Wisconsin-Madison, Madison, WI 53706 (United States)

2013-04-10T23:59:59.000Z

403

A prairie perspective on global warming and climate change  

Science Journals Connector (OSTI)

The Great Plains blankets eight states. It is dotted with oil patches, public utilities, farms, ranches, feed lots, meat-packing plants, medium size cities, military bases and tiny towns feeding on agricultural activity. The question is: what can leaders do for a desperate and aging population in a global warming environment to bring full employment to the region. This paper explores opportunities to capitalise upon environmentally friendly farming practices and agricultural waste to produce jobs, money, commercial opportunities, marketable sod, fertilisers, methane, electricity and securities (from the Chicago Climate Exchange) as answers for this question. The paper recounts the use of man made wetlands to sequester CO2; by-products from coal fired power plants; landfill methane; methane digesters and soil carbon projects to arrest heat and contribute to the campaign against global warming.

Ronald Griffin

2009-01-01T23:59:59.000Z

404

Surface electromagnetic wave equations in a warm magnetized quantum plasma  

SciTech Connect

Based on the single-fluid plasma model, a theoretical investigation of surface electromagnetic waves in a warm quantum magnetized inhomogeneous plasma is presented. The surface electromagnetic waves are assumed to propagate on the plane between a vacuum and a warm quantum magnetized plasma. The quantum magnetohydrodynamic model includes quantum diffraction effect (Bohm potential), and quantum statistical pressure is used to derive the new dispersion relation of surface electromagnetic waves. And the general dispersion relation is analyzed in some special cases of interest. It is shown that surface plasma oscillations can be propagated due to quantum effects, and the propagation velocity is enhanced. Furthermore, the external magnetic field has a significant effect on surface wave's dispersion equation. Our work should be of a useful tool for investigating the physical characteristic of surface waves and physical properties of the bounded quantum plasmas.

Li, Chunhua; Yang, Weihong [Department of Modern Physics, University of Science and Technology of China, 230026 Hefei (China); Wu, Zhengwei, E-mail: wuzw@ustc.edu.cn [Department of Modern Physics, University of Science and Technology of China, 230026 Hefei (China); Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong); Center of Low Temperature Plasma Application, Yunnan Aerospace Industry Company, Kunming, 650229 Yunnan (China); Chu, Paul K. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong)

2014-07-15T23:59:59.000Z

405

Global warming potential for CF[sub 4  

SciTech Connect

With sufficient emissions, fluorinated gases such as CF[sub 4] could contribute significantly to the concerns about global warming because they are greenhouse gases, are chemically very inert, and have long accumulation lifetimes in the atmosphere. At this time, the only significant known source of CF[sub 4] is primary aluminum smelting (Abrahamson, 1992). While current emissions are small, additional sources could make CF[sub 4] an important contribution to climate forcing in the future.

Wuebbles, D J; Grossman, A S

1992-11-16T23:59:59.000Z

406

41JUNE 2005AMERICAN METEOROLOGICAL SOCIETY | (not shown). This warm,  

E-Print Network (OSTI)

41JUNE 2005AMERICAN METEOROLOGICAL SOCIETY | (not shown). This warm, southerly flow accelerates to intense solar radiation, which lead to an early onset of melt. Therefore, an early and pro- longed meltW South 2004 (1), 2003 (2) Egedesminde 68.7ºN, 52.8ºW Central west 2004 (2), 2003 (1) Tasiilaq 65.6ºN, 37

Box, Jason E.

407

Estimating impacts of warming temperatures on California's electricity  

NLE Websites -- All DOE Office Websites (Extended Search)

impacts of warming temperatures on California's electricity impacts of warming temperatures on California's electricity system Title Estimating impacts of warming temperatures on California's electricity system Publication Type Journal Article Year of Publication 2013 Authors Sathaye, Jayant A., Larry L. Dale, Peter H. Larsen, Gary A. Fitts, Kevin Koy, Sarah M. Lewis, and André Frossard Pereira de Lucena Journal Global Environmental Change Volume 23 Start Page 499 Issue 2 Pagination 499-511 Date Published 04/2013 Keywords EES-EG, electricity markets and policy group Abstract Despite a clear need, little research has been carried out at the regional-level to quantify potential climate-related impacts to electricity production and delivery systems. This paper introduces a bottom-up study of climate change impacts on California's energy infrastructure, including high temperature effects on power plant capacity, transmission lines, substation capacity, and peak electricity demand. End-of-century impacts were projected using the A2 and B1 Intergovernmental Panel on Climate Change emission scenarios. The study quantifies the effect of high ambient temperatures on electricity generation, the capacity of substations and transmission lines, and the demand for peak power for a set of climate scenarios. Based on these scenarios, atmospheric warming and associated peak demand increases would necessitate up to 38% of additional peak generation capacity and up to 31% additional transmission capacity, assuming current infrastructure. These findings, although based on a limited number of scenarios, suggest that additional funding could be put to good use by supporting R&D into next generation cooling equipment technologies, diversifying the power generation mix without compromising the system's operational flexibility, and designing effective demand side management programs.

408

Nonexponential relaxations in dense microemulsion near the glasslike transition  

Science Journals Connector (OSTI)

Extensive quasielastic-light-scattering, small-angle neutron scattering, and neutron-spin-echo (NSE) spectroscopic measurements have been performed on a three-component microemulsion system containing bis(2-ethylhexylsulfosuccinate) (AOT) (surfactant), D2O, and decane (oil) at two temperatures in the one-phase region. By fixing the molar ratio of water to AOT at w=40.61, the average radius of spherical surfactant coated water droplets can be maintained at 58 A? with a polydispersity index of 22%. The volume fraction ? of the droplets can be continuously varied from 0.1 to 0.75, spanning the entire range from the dilute gas all the way to the close-packed glass by adjusting the oil content of the microemulsion. The static structure factors and the time-dependent density correlation functions of these densely packed spherical droplets were systematically measured as a function of the volume fraction.As ? increases from 0.1 to 0.75, the structure factor gradually evolves from a smooth function of the order unity into a highly oscillatory function, with the height of the first diffraction peak around 2 and higher, similar to that of a dense liquid. At the same time the time-dependent density correlation function exhibits pronounced nonexponential relaxation. The Kohlrausch-Williams-Watts (KWW) stretched exponential function, exp[-(t/T)?], has been shown to fit the density correlation function over most of the time range of the measurements, which covers nearly three decades, at Q values of about 10-3 A?-1, typical in a light scattering experiment. The exponent ?, starting from an initial value of unity at ?=0.1, gradually decreases to about 0.6 at ?c?0.65 and increases thereafter. The relaxation time T shows a trend to diverge at ???c, approximately following the Vogel-Fulcher law. These features bear striking similarity to a glasslike transition predicted by recent mode-mode coupling theories of dense liquids. The KWW function also fits very well the time-dependent density correlation function at ?=0.6, measured by NSE (Q?0.2 A?-1). Thus, the KWW function is shown to be valid for the Q range spanning from 0.001 to 0.2 A?-1. The relaxation time, to a good approximation, scales like Q-2/?.

Eric Y. Sheu; Sow-Hsin Chen; J. S. Huang; J. C. Sung

1989-06-01T23:59:59.000Z

409

Global Warming Solutions Inc previously Southern Investments Inc | Open  

Open Energy Info (EERE)

Warming Solutions Inc previously Southern Investments Inc Warming Solutions Inc previously Southern Investments Inc Jump to: navigation, search Name Global Warming Solutions Inc (previously Southern Investments Inc) Place Houston, Texas Zip 77002 Sector Solar Product Developer of a combined PV and thermal energy solar system called light electric and thermal generator (LETG). Coordinates 29.76045°, -95.369784° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.76045,"lon":-95.369784,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

410

North Florida Global Warming Study Group | Open Energy Information  

Open Energy Info (EERE)

Florida Global Warming Study Group Florida Global Warming Study Group Jump to: navigation, search Name North Florida Global Warming Study Group Address 8342 Compass Rose Dr S Place Jacksonville, Florida Zip 32216 Year founded 2003 Phone number 9047379211 Website [atilley@unf.edu atilley@unf.edu ] Notes This is an email newslist. Coordinates 30.259044°, -81.571333° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":30.259044,"lon":-81.571333,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

411

Forestry and global warming: the physical and policy linkages  

Science Journals Connector (OSTI)

The potential for biotically mitigating global warming is receiving a great deal of policy and technical attention around the world. Elements of the political community are drawn to the notion that land?use patterns can be modified more easily than energy consumption patterns and some modelers suggest that the potential for storing carbon in terrestrial ecosystems is very large. Most work to date however uses only physical criteria in estimating how much land might be available for reforestation. Accounting for social and economic constraints is much more difficult resulting in daunting uncertainty about what could actually be accomplished. Furthermore our relative ignorance of the functioning of the global carbon cycle makes attempting to manipulate it for human purposes questionable at best. Nevertheless there are many reasons besides global warming to pursue a radical restructuring of land?use patterns around the world. Such a restructuring should be undertaken in conjunction with many other measures to slow global warming most immediately in the energy sector.

M. C. Trexler

1992-01-01T23:59:59.000Z

412

Variance in trace constituents following the final stratospheric warming  

SciTech Connect

Temporal variances in the concentration of trace species are examined within the northern hemisphere stratosphere following the final warming. Variances are computed utilizing an annual cycle run of a tracer transport model and stratospheric balloon observations. The model uses winds generated with a general circulation model to transport N{sub 2}O. Regions of significant N{sub 2}O variance are produced immediately following the modeled final warming as zonally inhomogeneous N{sub 2}O anomalies are created during the warming, then advected passively about the pole by easterly winds. Diffusion rapidly dissipates these anomalies and decreases the associated stratospheric tracer variance to very low levels by June. On monthly timescales the 10 day normal mode explains up to 50% of the modeled variance of N{sub 2}O during summer. On these timescales potential temperature exhibits less variability than N{sub 2}O, as horizontal parcel displacements are relatively ineffective at inducing potential temperature variability. An examination of balloon observations of N{sub 2}O and other long lived trace species, between 40{degree} and 50{degree}N, indicates that the primary component of the tracer variance during June is on an interannual time scale. The authors attribute this interannual variability to stratospheric variability during the winter and early spring months imprinted onto the distributions of long lived tracers. Potential temperatures does not exhibit much interannual variability because it does not retain a memory of the previous winters circulation.

Hess, P. (Univ. of Washington, Seattle (USA))

1990-08-20T23:59:59.000Z

413

Numerical simulation on dense gas dispersion and fire characteristics after liquefied natural gas release.  

E-Print Network (OSTI)

??This PhD dissertation mainly studies the prediction, simulation and mitigation methods of the two main hazards in LNG (Liquefied Natural Gas) industry, LNG vapor dense… (more)

Sun, Biao

2012-01-01T23:59:59.000Z

414

Low-temperature catalyst activator: mechanism of dense carbon nanotube forest growth studied using synchrotron radiation  

Science Journals Connector (OSTI)

The mechanism of dense vertically aligned carbon nanotube growth achieved by a recently developed thermal chemical vapor deposition method was studied using synchrotron radiation spectroscopic techniques.

Takashima, A.

2014-05-22T23:59:59.000Z

415

Using Nuclear Fusion Reactions to Peer Inside the Core of a Dense...  

Office of Science (SC) Website

Using Nuclear Fusion Reactions to Peer Inside the Core of a Dense Hot Plasma Fusion Energy Sciences (FES) FES Home About Research Facilities Science Highlights Benefits of FES...

416

Dense Granular Flows Sebastian Chialvo and Sankaran Sundaresan  

NLE Websites -- All DOE Office Websites (Extended Search)

and Refinement and Refinement of a Comprehensive Model for Dense Granular Flows Sebastian Chialvo and Sankaran Sundaresan Princeton University This work is supported by DOE-UCR grant DE-FE0006932. Logo The NETL logotype illustrated on this page is the institutional signature for the U.S. Department of Energy, National Energy Technology Laboratory-NETL. Its function is to be the graphic identi cation for that organization. The relationship among the elements of this logo is essential to preserve this identity. The speci cations included on these pages will assist in the proper display of this logo and should be fol- lowed exactly. Questions concerning this logo and its application may be addressed to the NETL O ce of Public A airs Coordination, Contact.PublicA airs@NETL.DOE.GOV.

417

CORRELATING INFALL WITH DEUTERIUM FRACTIONATION IN DENSE CORES  

SciTech Connect

We present a survey of HCO{sup +} (3-2) observations pointed toward dense cores with previous measurements of N(N{sub 2}D{sup +})/N(N{sub 2}H{sup +}). Of the 26 cores in this survey, 5 show the spectroscopic signature of outward motion, 9 exhibit neither inward nor outward motion, 11 appear to be infalling, and 1 is not detected. We compare the degree of deuterium fractionation with infall velocities calculated from the HCO{sup +} spectra and find that those cores with [D]/[H] > 0.1 are more likely to have the signature of inward motions than cores with smaller [D]/[H] ratios. Infall motions are also much more common in cores with masses exceeding their thermal Jeans masses. The fastest infall velocity measured belongs to one of the two protostellar cores in our survey, L1521F, and the observed motions are typically on the order of the sound speed.

Schnee, Scott; Brunetti, Nathan; Friesen, Rachel [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Di Francesco, James; Johnstone, Doug; Pon, Andy [National Research Council Canada, Herzberg Institute of Astrophysics, 5071 West Saanich Road Victoria, BC V9E 2E7 (Canada); Caselli, Paola, E-mail: sschnee@nrao.edu [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)

2013-11-10T23:59:59.000Z

418

Long Range Bond-Bond Correlations in Dense Polymer Solutions  

Science Journals Connector (OSTI)

The scaling of the bond-bond correlation function P1(s) along linear polymer chains is investigated with respect to the curvilinear distance s along the flexible chain and the monomer density ? via Monte Carlo and molecular dynamics simulations. Surprisingly, the correlations in dense three-dimensional solutions are found to decay with a power law P1(s)?s-? with ?=3/2 and the exponential behavior commonly assumed is clearly ruled out for long chains. In semidilute solutions, the density dependent scaling of P1(s)?g-?0(s/g)-? with ?0=2-2?=0.824 (?=0.588 being Flory's exponent) is set by the number of monomers g(?) in an excluded volume blob. Our computational findings compare well with simple scaling arguments and perturbation calculation. The power-law behavior is due to self-interactions of chains caused by the chain connectivity and the incompressibility of the melt.

J. P. Wittmer; H. Meyer; J. Baschnagel; A. Johner; S. Obukhov; L. Mattioni; M. Müller; A. N. Semenov

2004-09-29T23:59:59.000Z

419

Fully kinetic simulations of megajoule-scale dense plasma focus  

Science Journals Connector (OSTI)

Dense plasma focus (DPF) Z-pinch devices are sources of copious high energy electrons and ions x-rays and neutrons. Megajoule-scale DPFs can generate 1012 neutrons per pulse in deuterium gas through a combination of thermonuclear and beam-target fusion. However the details of the neutron production are not fully understood and past optimization efforts of these devices have been largely empirical. Previously we reported on the first fully kinetic simulations of a kilojoule-scale DPF and demonstrated that both kinetic ions and kinetic electrons are needed to reproduce experimentally observed features such as charged-particle beam formation and anomalous resistivity. Here we present the first fully kinetic simulation of a MegaJoule DPF with predicted ion and neutron spectra neutron anisotropy neutron spot size and time history of neutron production. The total yield predicted by the simulation is in agreement with measured values validating the kinetic model in a second energy regime.

M. May

2014-01-01T23:59:59.000Z

420

Molecular dynamics simulations of optical conductivity of dense plasmas  

Science Journals Connector (OSTI)

The optical conductivity ?(?) for dense Coulomb systems is investigated using molecular dynamics simulations on the basis of pseudopotentials to mimic quantum effects. Starting from linear response theory, the response in the long-wavelength limit k=0 can be expressed by different types of autocorrelation functions (ACF’s) such as the current ACF, the force ACF, or the charge density ACF. Consistent simulation data for transverse as well as longitudinal ACF’s are shown which are based on calculations with high numerical accuracy. Results are compared with perturbation expansions which are restricted to small values of the plasma parameter. The relevance with respect to a quantum Coulomb plasma is discussed. Finally, results are presented showing a consistent description of these model plasmas in comparison to quantum statistical approaches and to experimental data.

I. Morozov, H. Reinholz, G. Röpke, A. Wierling, and G. Zwicknagel

2005-06-22T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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421

Current and Perspective Applications of Dense Plasma Focus Devices  

Science Journals Connector (OSTI)

Dense Plasma Focus (DPF) devices' applications which are intended to support the main?stream large?scale nuclear fusion programs (NFP) from one side (both in fundamental problems of Dense Magnetized Plasma physics and in its engineering issues) as well as elaborated for an immediate use in a number of fields from the other one are described. In the first direction such problems as self?generated magnetic fields implosion stability of plasma shells having a high aspect ratio etc. are important for the Inertial Confinement Fusion (ICF) programs (e.g. as NIF) whereas different problems of current disruption phenomenon plasma turbulence mechanisms of generation of fast particles and neutrons in magnetized plasmas are of great interest for the large devices of the Magnetic Plasma Confinement—MPC (e.g. as ITER). In a sphere of the engineering problems of NFP it is shown that in particular the radiation material sciences have DPF as a very efficient tool for radiation tests of prospect materials and for improvement of their characteristics. In the field of broad?band current applications some results obtained in the fields of radiation material sciences radiobiology nuclear medicine express Neutron Activation Analysis (including a single?shot interrogation of hidden illegal objects) dynamic non?destructive quality control X?Ray microlithography and micromachining and micro?radiography are presented. As the examples of the potential future applications it is proposed to use DPF as a powerful high?flux neutron source to generate very powerful pulses of neutrons in the nanosecond (ns) range of its duration for innovative experiments in nuclear physics for the goals of radiation treatment of malignant tumors for neutron tests of materials of the first wall blankets and NFP device's constructions (with fluences up to 1 dpa per a year term) and ns pulses of fast electrons neutrons and hard X?Rays for brachytherapy.

V. A. Gribkov

2008-01-01T23:59:59.000Z

422

General trend for pressurized superconducting hydrogen-dense materials  

SciTech Connect

The long-standing prediction that hydrogen can assume a metallic state under high pressure, combined with arguments put forward more recently that this state might even be superconducting up to high temperatures, continues to spur tremendous research activities toward the experimental realization of metallic hydrogen. These efforts have however so far been impeded by the enormous challenges associated with the exceedingly large required pressure. Hydrogen-dense materials, of the MH{sub 4} form (where M can be, e.g., Si, Ge, or Sn) or of the MH{sub 3} form (with M being, e.g., Al, Sc, Y, or La), allow for the rather exciting opportunity to carry out a proxy study of metallic hydrogen and associated high-temperature superconductivity at pressures within the reach of current techniques. At least one experimental report indicates that a superconducting state might have been observed already in SiH{sub 4}, and several theoretical studies have predicted superconductivity in pressurized hydrogen-rich materials; however, no systematic dependence on the applied pressure has yet been identified so far. In the present work, we have used first-principles methods in an attempt to predict the superconducting critical temperature (T{sub c}) as a function of pressure (P) for three metal-hydride systems of the MH{sub 3} form, namely ScH{sub 3}, YH{sub 3}, and LaH{sub 3}. By comparing the obtained results, we are able to point out a general trend in the T{sub c}-dependence on P. These gained insights presented here are likely to stimulate further theoretical studies of metallic phases of hydrogen-dense materials and should lead to new experimental investigations of their superconducting properties.

Kim, D. Y.; Scheicher, R. H.; Mao, Ho-kwang; Kang, T. W.; Ahuja, R.

2010-01-01T23:59:59.000Z

423

Materials/Condensed Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Materials/Condensed Matter Print Materials/Condensed Matter Print Materials research provides the foundation on which the economic well being of our high-tech society rests. The impact of advanced materials ranges dramatically over every aspect of our modern world from the minutiae of daily life to the grand scale of our national economy. Invariably, however, breakthroughs to new technologies trace their origin both to fundamental research in the basic properties of condensed matter and to applied research aimed at manipulating properties (structural, physical, chemical, electrical, magnetic, optical, etc.). Increasingly, the frontiers of materials research include materials that are "strongly correlated," characterized by strong coupling between a material's electrons with other electrons, magnetism, or the material lattice itself. This coupling often results in novel behavior, such as superconductivity, that may lead to technologically important applications.

424

Thermodynamics of clusterized matter  

E-Print Network (OSTI)

Thermodynamics of clusterized matter is studied in the framework of statistical models with non-interacting cluster degrees of freedom. At variance with the analytical Fisher model, exact Metropolis simulation results indicate that the transition from homogeneous to clusterized matter lies along the $\\rho=\\rho_0$ axis at all temperatures and the limiting point of the phase diagram is not a critical point even if the surface energy vanishes at this point. Sensitivity of the inferred phase diagram to the employed statistical framework in the case of finite systems is discussed by considering the grand-canonical and constant-pressure canonical ensembles. A Wigner-Seitz formalism in which the fragment charge is neutralized by an uniform electron distribution allows to build the phase diagram of neutron star matter.

Ad. R. Raduta; F. Gulminelli

2009-02-28T23:59:59.000Z

425

Climate Change over the Equatorial Indo-Pacific in Global Warming* CHIE IHARA, YOCHANAN KUSHNIR, AND MARK A. CANE  

E-Print Network (OSTI)

Climate Change over the Equatorial Indo-Pacific in Global Warming* CHIE IHARA, YOCHANAN KUSHNIR to global warming is investigated using model outputs submitted to the Intergovernmental Panel on Climate equatorial Indian Ocean warm more than the SSTs in the eastern equatorial Indian Ocean under global warming

426

Final Report for DOE grant project FG02-07ER41458 [Dense Quark Matter in Magnetic Fields  

SciTech Connect

Final Report for DOE grant DE-FG02-07ER41458. This grant was originally a three-year project. However, this final report summarizes the results of the first two years, as at the end of the second year of the grant the PIs moved to a new university and the grant was closed. The work done under the first two years of the DOE grant led to several papers and presentations. It also served to train one undergraduate and three graduate students.

Incera, Vivian

2012-01-24T23:59:59.000Z

427

At the heart of the matter: the origin of bulgeless dwarf galaxies and Dark Matter cores  

E-Print Network (OSTI)

For almost two decades the properties of "dwarf" galaxies have challenged the Cold Dark Matter (CDM) paradigm of galaxy formation. Most observed dwarf galaxies consists of a rotating stellar disc embedded in a massive DM halo with a near constant-density core. Yet, models based on the CDM scenario invariably form galaxies with dense spheroidal stellar "bulges" and steep central DM profiles, as low angular momentum baryons and DM sink to the center of galaxies through accretion and repeated mergers. Processes that decrease the central density of CDM halos have been identified, but have not yet reconciled theory with observations of present day dwarfs. This failure is potentially catastrophic for the CDM model, possibly requiring a different DM particle candidate. This Letter presents new hydrodynamical simulations in a Lambda$CDM framework where analogues of dwarf galaxies, bulgeless and with a shallow central DM profile, are formed. This is achieved by resolving the inhomogeneous interstellar medium, resulting in strong outflows from supernovae explosions which remove low angular momentum gas. This inhibits the formation of bulges and decreases the dark-matter density to less than half within the central kiloparsec. Realistic dwarf galaxies are thus shown to be a natural outcome of galaxy formation in the CDM scenario.

Fabio Governato; Chris Brook; Lucio Mayer; Alyson Brooks; George Rhee; James Wadsley; Patrik Jonsson; Beth Willman; Greg Stinson; Thomas Quinn; Piero Madau

2009-11-11T23:59:59.000Z

428

Densely Ionizing Radiation Acts via the Microenvironment to Promote Aggressive Trp53-Null Mammary Carcinomas  

Science Journals Connector (OSTI)

...Radiation Acts via the Microenvironment to Promote Aggressive Trp53-Null Mammary...changes from radiation contribute strongly to carcinogenic potential. Densely ionizing...radiation chimera in which mice were exposed to densely ionizing 350 MeV/amu Si-particles...

Irineu Illa-Bochaca; Haoxu Ouyang; Jonathan Tang; Christopher Sebastiano; Jian-Hua Mao; Sylvain V. Costes; Sandra Demaria; Mary Helen Barcellos-Hoff

2014-12-01T23:59:59.000Z

429

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC FLOW.  

E-Print Network (OSTI)

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC, that is within " of the round metric and has a geodesic for whi* *ch the corresponding orbit of the geodesic flow is "-dense in the unit tangent bundle. Moreover* *, for any " > 0, we construct

Burns, Keith

430

A G IDEAL OF COMPACT SETS STRICTLY ABOVE THE NOWHERE DENSE IDEAL IN THE TUKEY ORDER  

E-Print Network (OSTI)

A G IDEAL OF COMPACT SETS STRICTLY ABOVE THE NOWHERE DENSE IDEAL IN THE TUKEY ORDER JUSTIN TATCH above NWD in the Tukey order. Here NWD is the collection of all compact nowhere dense subsets directed partial orders (P, P ) and (Q, Q), we say that P is Tukey reducible to Q, in symbols P T Q

Solecki, Slawomir

431

A G # IDEAL OF COMPACT SETS STRICTLY ABOVE THE NOWHERE DENSE IDEAL IN THE TUKEY  

E-Print Network (OSTI)

A G # IDEAL OF COMPACT SETS STRICTLY ABOVE THE NOWHERE DENSE IDEAL IN THE TUKEY ORDER JUSTIN TATCH is strictly above NWD in the Tukey order. Here NWD is the collection of all compact nowhere dense subsets directed partial orders (P, # P ) and (Q, #Q ), we say that P is Tukey reducible to Q, in symbols P # T Q

Moore, Justin Tatch

432

A G IDEAL OF COMPACT SETS STRICTLY ABOVE THE NOWHERE DENSE IDEAL IN THE TUKEY  

E-Print Network (OSTI)

A G IDEAL OF COMPACT SETS STRICTLY ABOVE THE NOWHERE DENSE IDEAL IN THE TUKEY ORDER JUSTIN TATCH above NWD in the Tukey order. Here NWD is the collection of all compact nowhere dense subsets directed partial orders (P, P ) and (Q, Q), we say that P is Tukey reducible to Q, in symbols P T Q

Moore, Justin Tatch

433

FINAL REPORT WIND POWER WARM SPRINGS RESERVATION TRIBAL LANDS DOE GRANT NUMBER DE-FG36-07GO17077 SUBMITTED BY WARM SPRINGS POWER & WATER ENTERPRISES A CORPORATE ENTITY OF THE CONFEDERATED TRIBES OF WARM SPRINGS WARM SPRINGS, OREGON  

SciTech Connect

Wind Generation Feasibility Warm Springs Power and Water Enterprises (WSPWE) is a corporate entity owned by the Confederated Tribes of the Warm Springs Reservation, located in central Oregon. The organization is responsible for managing electrical power generation facilities on tribal lands and, as part of its charter, has the responsibility to evaluate and develop renewable energy resources for the Confederated Tribes of Warm Springs. WSPWE recently completed a multi-year-year wind resource assessment of tribal lands, beginning with the installation of wind monitoring towers on the Mutton Mountains site in 2003, and collection of on-site wind data is ongoing. The study identified the Mutton Mountain site on the northeastern edge of the reservation as a site with sufficient wind resources to support a commercial power project estimated to generate over 226,000 MWh per year. Initial estimates indicate that the first phase of the project would be approximately 79.5 MW of installed capacity. This Phase 2 study expands and builds on the previously conducted Phase 1 Wind Resource Assessment, dated June 30, 2007. In order to fully assess the economic benefits that may accrue to the Tribes through wind energy development at Mutton Mountain, a planning-level opinion of probable cost was performed to define the costs associated with key design and construction aspects of the proposed project. This report defines the Mutton Mountain project costs and economics in sufficient detail to allow the Tribes to either build the project themselves or contract with a developer under the most favorable terms possible for the Tribes.

Jim Manion; Michael Lofting; Wil Sando; Emily Leslie; Randy Goff

2009-03-30T23:59:59.000Z

434

Measure Guideline: Supplemental Dehumidification in Warm-Humid Climates  

SciTech Connect

This document covers a description of the need and applied solutions for supplemental dehumidification in warm-humid climates, especially for energy efficient homes where the sensible cooling load has been dramatically reduced. In older homes in warm-humid climates, cooling loads are typically high and cooling equipment runs a lot to cool the air. The cooling process also removes indoor moisture, reducing indoor relative humidity. However, at current residential code levels, and especially for above-code programs, sensible cooling loads have been so dramatically reduced that the cooling system does not run a lot to cool the air, resulting in much less moisture being removed. In these new homes, cooling equipment is off for much longer periods of time especially during spring/fall seasons, summer shoulder months, rainy periods, some summer nights, and some winter days. In warm-humid climates, those long off periods allow indoor humidity to become elevated due to internally generated moisture and ventilation air change. Elevated indoor relative humidity impacts comfort, indoor air quality, and building material durability. Industry is responding with supplemental dehumidification options, but that effort is really in its infancy regarding year-round humidity control in low-energy homes. Available supplemental humidity control options are discussed. Some options are less expensive but may not control indoor humidity as well as more expensive and comprehensive options. The best performing option is one that avoids overcooling and avoids adding unnecessary heat to the space by using waste heat from the cooling system to reheat the cooled and dehumidified air to room-neutral temperature.

Rudd, A.

2014-10-01T23:59:59.000Z

435

Antihelium from Dark Matter  

E-Print Network (OSTI)

Cosmic-ray anti-nuclei provide a promising discovery channel for the indirect detection of particle dark matter. Hadron showers produced by the pair-annihilation or decay of Galactic dark matter generate anti-nucleons which can in turn form light anti-nuclei. Previous studies have only focused on the spectrum and flux of low energy antideuterons which, although very rarely, are occasionally also produced by cosmic-ray spallation. Heavier elements ($A\\geq3$) have instead entirely negligible astrophysical background and a primary yield from dark matter which could be detectable by future experiments. Using a Monte Carlo event generator and an event-by-event phase space analysis, we compute, for the first time, the production spectrum of \\antihe and \\antiT for dark matter annihilating or decaying to $b\\bar{b}$ and ${W^+}{W^-}$ final states. We then employ a semi-analytic model of interstellar and heliospheric propagation to calculate the \\antihe flux as well as to provide tools to relate the anti-helium spectrum...

Carlson, Eric; Linden, Tim; Profumo, Stefano; Ibarra, Alejandro; Wild, Sebastian

2014-01-01T23:59:59.000Z

436

Antihelium from dark matter  

Science Journals Connector (OSTI)

Cosmic-ray antinuclei provide a promising discovery channel for the indirect detection of particle dark matter. Hadron showers produced by the pair annihilation or decay of Galactic dark matter generate antinucleons which can in turn form light antinuclei. Previous studies have only focused on the spectrum and flux of low energy antideuterons which, although very rarely, are occasionally also produced by cosmic-ray spallation. Heavier elements (A?3) have instead entirely negligible astrophysical background and a primary yield from dark matter which could be detectable by future experiments. Using a Monte Carlo event generator and an event-by-event phase space analysis, we compute, for the first time, the production spectrum of He¯3 and H¯3 for dark matter annihilating or decaying to bb¯ and W+W? final states. We then employ a semianalytic model of interstellar and heliospheric propagation to calculate the He¯3 flux as well as to provide tools to relate the antihelium spectrum corresponding to an arbitrary antideuteron spectrum. Finally, we discuss prospects for current and future experiments, including GAPS and AMS-02.

Eric Carlson; Adam Coogan; Tim Linden; Stefano Profumo; Alejandro Ibarra; Sebastian Wild

2014-04-08T23:59:59.000Z

437

Tunguska Dark Matter Ball  

E-Print Network (OSTI)

It is suggested that the Tunguska event in June 1908 cm-large was due to a cm-large ball of a condensate of bound states of 6 top and 6 anti-top quarks containing highly compressed ordinary matter. Such balls are supposed to make up the dark matter as we earlier proposed. The expected rate of impact of this kind of dark matter ball with the earth seems to crudely match a time scale of 200 years between the impacts. The main explosion of the Tunguska event is explained in our picture as material coming out from deep within the earth, where it has been heated and compressed by the ball penetrating to a depth of several thousand km. Thus the effect has some similarity with volcanic activity as suggested by Kundt. We discuss the possible identification of kimberlite pipes with earlier Tunguska-like events. A discussion of how the dark matter balls may have formed in the early universe is also given.

C. D. Froggatt; H. B. Nielsen

2014-03-27T23:59:59.000Z

438

Tunguska Dark Matter Ball  

E-Print Network (OSTI)

It is suggested that the Tunguska event in June 1908 cm-large was due to a cm-large ball of a condensate of bound states of 6 top and 6 anti-top quarks containing highly compressed ordinary matter. Such balls are supposed to make up the dark matter as we earlier proposed. The expected rate of impact of this kind of dark matter ball with the earth seems to crudely match a time scale of 200 years between the impacts. The main explosion of the Tunguska event is explained in our picture as material coming out from deep within the earth, where it has been heated and compressed by the ball penetrating to a depth of several thousand km. Thus the effect has some similarity with volcanic activity as suggested by Kundt. We discuss the possible identification of kimberlite pipes with earlier Tunguska-like events. A discussion of how the dark matter balls may have formed in the early universe is also given.

Froggatt, C D

2014-01-01T23:59:59.000Z

439

Matter & Energy Nanotechnology  

E-Print Network (OSTI)

to electrical energy in order to power electronic devices, these results point to an advantage in reducingSee Also: Matter & Energy Nanotechnology Materials Science Technology Energy Technology Civil of potential functionalities, ranging from single-nanowire lasers and LEDs to more complex devices

Espinosa, Horacio D.

440

Matter & Energy Nanotechnology  

E-Print Network (OSTI)

See also: Matter & Energy Nanotechnology Civil Engineering Chemistry Computers & Math Computer www.carbodeon.com Nanotechnology afm Perform better live cell research! Non-invasive, in-liquid AFM cures Had flu? You m Science News Share Blog Cite Health & Medicine Mind & Brain Plants & Animals Earth

Espinosa, Horacio D.

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Matter & Energy Wind Energy  

E-Print Network (OSTI)

See Also: Matter & Energy Wind Energy Energy Technology Physics Nuclear Energy Petroleum 27, 2012) -- Energy flowing from large-scale to small-scale places may be prevented from flowing, indicating that there are energy flows from large to small scale in confined space. Indeed, under a specific

Shepelyansky, Dima

442

Matter & Energy Solar Energy  

E-Print Network (OSTI)

See Also: Matter & Energy Solar Energy· Electronics· Materials Science· Earth & Climate Energy and the Environment · Renewable Energy· Environmental Science · Reference Chemical compound· Semiconductor· Gallium at the University of Illinois, the future of solar energy just got brighter. Although silicon is the industry

Rogers, John A.

443

Dark matter, not magnetism  

Science Journals Connector (OSTI)

......Astronomical Society. Provided by the NASA Astrophysics Data System 1 March 1993 research-article Letters Dark matter, not magnetism Massimo Persic 1 2 Paolo Salucci 1 1 Notice that most optical rotation curves, coming from the gas-emitted H alpha line......

Massimo Persic; Paolo Salucci

1993-03-01T23:59:59.000Z

444

Processes for making dense, spherical active materials for lithium-ion cells  

DOE Patents (OSTI)

Processes are provided for making dense, spherical mixed-metal carbonate or phosphate precursors that are particularly well suited for the production of active materials for electrochemical devices such as lithium ion secondary batteries. Exemplified methods include precipitating dense, spherical particles of metal carbonates or metal phosphates from a combined aqueous solution using a precipitating agent such as ammonium hydrogen carbonate, sodium hydrogen carbonate, or a mixture that includes sodium hydrogen carbonate. Other exemplified methods include precipitating dense, spherical particles of metal phosphates using a precipitating agent such as ammonium hydrogen phosphate, ammonium dihydrogen phosphate, sodium phosphate, sodium hydrogen phosphate, sodium dihydrogen phosphate, or a mixture of any two or more thereof. Further provided are compositions of and methods of making dense, spherical metal oxides and metal phosphates using the dense, spherical metal precursors. Still further provided are electrodes and batteries using the same.

Kang, Sun-Ho (Naperville, IL); Amine, Khalil (Downers Grove, IL)

2011-11-22T23:59:59.000Z

445

Performance of the SLD Warm Iron Calorimeter prototype  

SciTech Connect

A prototype hadron calorimeter, of similar design to the Warm Iron Calorimeter (WIC) planned for the SLD experiment, has been built and its performance has been studied in a test beam. The WIC is an iron sampling calorimeter whose active elements are plastic streamer tubes similar to those used for the Mont-Blanc proton decay experiment. The construction and operation of the tubes will be briefly described together with their use in an iron calorimeter - muon tracker. Efficiency, resolution and linearity have been measured in a hadron/muon beam up to 11 GeV. The measured values correspond to the SLD design goals.

Callegari, G.; Piemontese, L.; De Sangro, R.; Peruzzi, I., Piccolo, M.; Busza, W.; Friedman, J.; Johnson, A.; Kendall, H.; Kistiakowsky, V.

1986-03-01T23:59:59.000Z

446

Sheet metal stamping die design for warm forming  

DOE Patents (OSTI)

In metal stamping dies, by taking advantage of improved material flow by selectively warming the die, flat sections of the die can contribute to the flow of material throughout the workpiece. Local surface heating can be accomplished by placing a heating block in the die. Distribution of heating at the flat lower train central regions outside of the bend region allows a softer flow at a lower stress to enable material flow into the thinner, higher strain areas at the bend/s. The heating block is inserted into the die and is powered by a power supply.

Ghosh, Amit K. (Ann Arbor, MI)

2003-04-22T23:59:59.000Z

447

Energy Matters in Washington State Page 1 Energy Matters  

E-Print Network (OSTI)

Energy Matters in Washington State ­ Page 1 Energy Matters in Washington State June 2008 Updated November 2009 Updated and Revised October 2013 Grand Coulee Dam #12;Energy Matters in Washington State ­ Page 2 Copyright © 2013 Washington State University Energy Program. 905 Plum Street SE, P.O. Box 43169

Collins, Gary S.

448

Dynamical mechanism for non-locality in dense granular flows  

E-Print Network (OSTI)

The dynamical mechanism at the origin of the non-local rheology of dense granular flows is investigated trough discrete element simulations. We show that the influence of a shear band on the mechanical behavior of a distant zone is contained in the spatial variations observed in the network of granular contacts. Using a micro-rheology technique, we establish that the exponential responses hence obtained, do not proof the validity of a mechanical activation process as previously suggested, but stem from the spatial relaxation of the shear rate as a direct consequence of a macroscopic non-local constitutive relation. Finally, by direct visualization of the local relaxation processes, we dismiss the kinetic elasto-plastic picture, where a flow is conceived as a quasi-static sequence of localized plastic events interacting through the stress field. We therefore conclude in favor of the jamming scenario, where geometrical constrains lead to coherent non-affine displacements along floppy modes, inherently non-local.

M. Bouzid; M. Trulsson; P. Claudin; E. Clement; B. Andreotti

2014-05-09T23:59:59.000Z

449

Observations of strong ion-ion correlations in dense plasmas  

SciTech Connect

Using simultaneous spectrally, angularly, and temporally resolved x-ray scattering, we measure the pronounced ion-ion correlation peak in a strongly coupled plasma. Laser-driven shock-compressed aluminum at ?3× solid density is probed with high-energy photons at 17.9?keV created by molybdenum He-? emission in a laser-driven plasma source. The measured elastic scattering feature shows a well-pronounced correlation peak at a wave vector of k=4Å{sup ?1}. The magnitude of this correlation peak cannot be described by standard plasma theories employing a linear screened Coulomb potential. Advanced models, including a strong short-range repulsion due to the inner structure of the aluminum ions are however in good agreement with the scattering data. These studies have demonstrated a new highly accurate diagnostic technique to directly measure the state of compression and the ion-ion correlations. We have since applied this new method in single-shot wave-number resolved S(k) measurements to characterize the physical properties of dense plasmas.

Ma, T., E-mail: ma8@llnl.gov; Pak, A.; Landen, O. L.; Le Pape, S.; Turnbull, D.; Döppner, T. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Fletcher, L.; Galtier, E.; Hastings, J.; Lee, H. J.; Nagler, B.; Glenzer, S. H. [SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)] [SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States); Chapman, D. A. [Plasma Physics Group, AWE plc, Reading RG7 4PR (United Kingdom) [Plasma Physics Group, AWE plc, Reading RG7 4PR (United Kingdom); Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Falcone, R. W. [Physics Department, University of California, Berkeley, California 94720 (United States)] [Physics Department, University of California, Berkeley, California 94720 (United States); Fortmann, C. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States) [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States); Gericke, D. O. [Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom)] [Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Gregori, G.; White, T. G. [University of Oxford, Clarendon Laboratory, Oxford OX1 3PU (United Kingdom)] [University of Oxford, Clarendon Laboratory, Oxford OX1 3PU (United Kingdom); Neumayer, P. [Extreme Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany)] [Extreme Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany); Vorberger, J. [Max Planck Institut für Physik komplexer Systeme, Nötthnizer Straße 38, 01187 Dresden (Germany)] [Max Planck Institut für Physik komplexer Systeme, Nötthnizer Straße 38, 01187 Dresden (Germany); and others

2014-05-15T23:59:59.000Z

450

Free energy landscape of a dense hard-sphere system  

Science Journals Connector (OSTI)

The topography of the free energy landscape in phase space of a dense hard-sphere system characterized by a discretized free energy functional of the Ramakrishnan-Yussouff form is investigated numerically using a specially devised Monte Carlo procedure. We locate a considerable number of glassy local minima of the free energy and analyze the distributions of the free energy at a minimum and an appropriately defined phase-space “distance” between different minima. We find evidence for the existence of pairs of closely related glassy minima (“two-level systems”). We also investigate the way the system makes transitions as it moves from the basin of attraction of a minimum to that of another one after a start under nonequilibrium conditions. This allows us to determine the effective height of free energy barriers that separate a glassy minimum from the others. The dependence of the height of free energy barriers on the density is investigated in detail. The general appearance of the free energy landscape resembles that of a putting green: relatively deep minima separated by a fairly flat structure. We discuss the connection of our results with the Vogel-Fulcher law and relate our observations to other work on the glass transition.

Chandan Dasgupta and Oriol T. Valls

1999-03-01T23:59:59.000Z

451

The Search for Dark Matter  

ScienceCinema (OSTI)

More than 25 years ago, PNNL scientists began the first underground measurements searching for dark matter using specialized radiation detector technology. Dark matter is yet to be discovered says Physicist John L. Orrell.

Orrell, John

2014-07-24T23:59:59.000Z

452

The Search for Dark Matter  

SciTech Connect

More than 25 years ago, PNNL scientists began the first underground measurements searching for dark matter using specialized radiation detector technology. Dark matter is yet to be discovered says Physicist John L. Orrell.

Orrell, John

2013-11-20T23:59:59.000Z

453

Quantum Condensed Matter | More Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Quantum Condensed Matter SHARE Quantum Condensed Matter Neutron scattering is a uniquely powerful probe for measuring the structure and dynamics of condensed matter. As such it is...

454

Quantum Condensed Matter | Neutron Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Quantum Condensed Matter SHARE Quantum Condensed Matter Neutron scattering is a uniquely powerful probe for measuring the structure and dynamics of condensed matter. As such it is...

455

Ashton Warm Springs Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Ashton Warm Springs Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Ashton Warm Springs Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.095,"lon":-111.4583,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

456

Global warming and oil spills could cool shoaling reefs  

SciTech Connect

High water temperature generated on reef flats have been implicated as one of the factors determining the ecological patterns and structural morphologies peculiar to shoaling reefs. In approximately ten years of water temperature and water level data from a shoaling reef flat at Punta Galeta (Caribbean Panama), water temperatures were dependent on water levels. Water temperatures ranged up to 38[degrees]C when daily minimum water depths over the reef crest were < 12 cm, but never exceeded 30[degrees]C when the minimum water levels were > 12 cm. If conservative predictions of sea level rise caused by global warming are correct, normal vertical accretion rates of the reef flat could keep pace with rising sea level until the middle of the next century; after that the occurrence of high water temperatures would be rapidly reduced. However, damage from an oil spill at Punta Galeta in 1986 was concentrated at the seaward margin of the reef flat, where biogenic processes control the overall vertical accretion of the reef platform. By slowing rates of vertical accretion, oil impact could potentially accelerate the effects of global warming on the ecology and morphology of the reef.

Cubit, J.D. (Smithsonian Tropical Research Inst., Apdo (Panama))

1990-01-09T23:59:59.000Z

457

The British coal global warming R&D programme  

Science Journals Connector (OSTI)

The threat of possible global warming is sufficient to warrant ‘least regrets’ measures to reduce emissions of greenhouse gases and investigation of fallback options, such as carbon dioxide removal from coal-fired power plants. The Global Warming R&D Programme is investigating carbon dioxide removal options, sometimes called ‘Low CO2 Power Generation’. An assessment programme has estimated the thermal efficiency of a number of process schemes and concluded that gasification based systems, with the addition of a CO shift reactor and CO2 scrubbers or a membrane gas separator, provide promising approaches. A clean hydrogen fuel would be fired in a gas turbine and 90% of the CO2 removed and exported as a liquid stream for storage in exhausted oil or gas fields. Costs of such power plants are now being explored and a collaborative programme is commencing with membrane developers, with the aim of developing and testing membranes for this duty. The paper outlines the background and describes preparation for experimental work using CO2/H2 separating membranes.

J.M. Topper; C.J. Bower; I.R. Summerfield; I.S.C. Hughes

1992-01-01T23:59:59.000Z

458

Combating global warming via non-fossil fuel energy options  

Science Journals Connector (OSTI)

Non-fossil fuel energy options can help reduce or eliminate the emissions of greenhouse gases and are needed to combat climate change. Three distinct ways in which non-fossil fuel options can be used in society are examined here: the capture/production of non-fossil fuel energy sources, their conversion into appropriate energy carriers and increased efficiency throughout the life cycle. Non-fossil fuel energy sources are insufficient to avoid global warming in that they are not necessarily readily utilisable in their natural forms. Hydrogen energy systems are needed to facilitate the use of non-fossil fuels by converting them to two main classes of energy carriers: hydrogen (and hydrogen-derived fuels) and electricity. High efficiency is needed to allow the greatest benefits to be attained from energy options in terms of climate change and other factors. A case study is considered involving the production of hydrogen from non-fossil energy sources via thermochemical water decomposition. Thermochemical water decomposition provides a realistic future non-fossil fuel energy option, which can be driven by non-fossil energy sources (particularly nuclear or solar energy) and help combat global warming.

Marc A. Rosen

2009-01-01T23:59:59.000Z

459

Instabilities of Non-Abelian Vortices in Dense QCD  

SciTech Connect

We construct a low-energy effective theory describing non-Abelian vortices in the color superconducting quark matter under stress. We demonstrate that all the vortices are radically unstable against decay into the only one type of vortices due to the potential term induced by the explicit flavor symmetry breaking by the strange quark mass. A simple analytical estimate for the lifetime of unstable vortices is provided under the controlled weak-coupling calculations. We briefly discuss the (non)existence of magnetic monopoles at high density.

Eto, Minoru [Theoretical Physics Laboratory, RIKEN, Saitama 351-0198 (Japan); Nitta, Muneto [Department of Physics, and Research and Education Center for Natural Sciences, Keio University, 4-1-1 Hiyoshi, Yokohama, Kanagawa 223-8521 (Japan); Yamamoto, Naoki [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)

2010-04-23T23:59:59.000Z

460

Instabilities of Non-Abelian Vortices in Dense QCD  

E-Print Network (OSTI)

We construct a low-energy effective theory describing non-Abelian vortices in the color superconducting quark matter under stress. We demonstrate that all the vortices are radically unstable against decay into the only one type of vortices due to the potential term induced by the explicit flavor symmetry breaking by the strange quark mass. A simple analytical estimate for the lifetime of unstable vortices is provided under the controlled weak-coupling calculations. We briefly discuss the (non)existence of magnetic monopoles at high density.

Minoru Eto; Muneto Nitta; Naoki Yamamoto

2009-12-08T23:59:59.000Z

Note: This page contains sample records for the topic "warm dense matter" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Direct search for dark matter  

SciTech Connect

Dark matter is hypothetical matter which does not interact with electromagnetic radiation. The existence of dark matter is only inferred from gravitational effects of astrophysical observations to explain the missing mass component of the Universe. Weakly Interacting Massive Particles are currently the most popular candidate to explain the missing mass component. I review the current status of experimental searches of dark matter through direct detection using terrestrial detectors.

Yoo, Jonghee; /Fermilab

2009-12-01T23:59:59.000Z

462

Relationships between global warming and tropical cyclone activity in the Western North Pacific .  

E-Print Network (OSTI)

??In this work, we investigate the relationships between global warming and tropical cyclone activity in the Western North Pacific (WNP). Our hypothesis is that global… (more)

Meyer, David W.

2007-01-01T23:59:59.000Z

463

The right thing to do: Global warming and the conservative press.  

E-Print Network (OSTI)

??Deemed an issue of the ideological left, global warming is a contentious issue in today’s political landscape. In 2006, environmental documentary An Inconvenient Truth, narrated… (more)

Poff, Michele

2010-01-01T23:59:59.000Z

464

Global warming coverage in the media: trends in a Mexico City newspaper.  

E-Print Network (OSTI)

??Global warming and its implications have astounding consequences for the global community. Although some research has been done on the trends within environmental reporting, few… (more)

Deines, Tina

2007-01-01T23:59:59.000Z

465

Den globala uppvärmningen i skolans läromedel; How do schoolbooks discuss the global warming?.  

E-Print Network (OSTI)

?? Today the talk about global warming and climate change are on top of the public agenda. There for schools and schoolbooks also debate the… (more)

Björkman, Andreas

2010-01-01T23:59:59.000Z

466

THE HUMAN-NATURE RELATIONSHIP AS PORTRAYED IN NEWSPAPER COVERAGE OF GLOBAL WARMING .  

E-Print Network (OSTI)

??After more than 20 years of mass mediated discussion, with no United States legislative action on global warming, the discourse used in the debate about… (more)

[No author

2012-01-01T23:59:59.000Z

467

Asymmetric effects of daytime and night-time warming on Northern Hemisphere vegetation  

Science Journals Connector (OSTI)

... higher night temperature from global warming. Proc. Natl Acad. Sci. USA 101, 9971–9975 (2004) Prasad, P. V. V., Pisipati, S. R., Ristic, ...

Shushi Peng; Shilong Piao; Philippe Ciais; Ranga B. Myneni; Anping Chen; Frédéric Chevallier; Albertus J. Dolman; Ivan A. Janssens; Josep Peñuelas; Gengxin Zhang; Sara Vicca; Shiqiang Wan; Shiping Wang; Hui Zeng

2013-09-04T23:59:59.000Z

468

Surface reflectance and conversion efficiency dependence of technologies for mitigating global warming  

Science Journals Connector (OSTI)

A means of assessing the relative impact of different renewable energy technologies on global warming has been developed. All power plants emit thermal energy to the atmosphere. Fossil fuel power plants also emit CO2 which accumulates in the atmosphere and provides an indirect increase in global warming via the greenhouse effect. A fossil fuel power plant may operate for some time before the global warming due to its CO2 emission exceeds the warming due to its direct heat emission. When a renewable energy power plant is deployed instead of a fossil fuel power plant there may be a significant time delay before the direct global warming effect is less than the combined direct and indirect global warming effect from an equivalent output coal fired plant – the “business as usual” case. Simple expressions are derived to calculate global temperature change as a function of ground reflectance and conversion efficiency for various types of fossil fuelled and renewable energy power plants. These expressions are used to assess the global warming mitigation potential of some proposed Australian renewable energy projects. The application of the expressions is extended to evaluate the deployment in Australia of current and new geo-engineering and carbon sequestration solutions to mitigate global warming. Principal findings are that warming mitigation depends strongly on the solar to electric conversion efficiency of renewable technologies, geo-engineering projects may offer more economic mitigation than renewable energy projects and the mitigation potential of reforestation projects depends strongly on the location of the projects.

Ian Edmonds; Geoff Smith

2011-01-01T23:59:59.000Z

469

The physics of the warming of Lake Tanganyika by climate change  

Science Journals Connector (OSTI)

... increased the density stratification and stability of Lake Tanganyika, a deep rift valley lake. ... Lakes warm through increased incoming long-wave radiation.

470

E-Print Network 3.0 - air warming system Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

inside. Analogously... , but through a different physical process, the Earth's greenhouse effect warms the surface of the planet... intensified the natural greenhouse effect,...

471

Particulate matter dynamics  

E-Print Network (OSTI)

A substantial fraction of the particulate matter released into the atmosphere by industrial or natural processes corresponds to particles whose aerodynamic diameters are greater than 50 mm. It has been shown that, for these particles, the classical description of Gaussian plume diffusion processes, is inadequate to describe the transport and deposition. In this paper we present new results concerning the dispersion of coarse particulate matter. The simulations are done with our own code that uses the Bulirsch Stoer numerical integrator to calculate threedimensional trajectories of particles released into the environment under very general conditions. Turbulent processes are simulated by the Langevin equation and weather conditions are modeled after stable (Monin-Obukhov length L> 0) and unstable conditions (L <0). We present several case studies based on Monte Carlo simulations and discusses the effect of weather on the final deposition of these particles.

Cionco, Rodolfo G; Caligaris, Marta G

2012-01-01T23:59:59.000Z

472

Impact of strange quark matter nuggets on pycnonuclear reaction rates in the crusts of neutron stars  

SciTech Connect

This article presents an investigation into the pycnonuclear reaction rates in dense crustal matter of neutron stars contaminated with strange quark matter nuggets. The presence of such nuggets in the crustal matter of neutron stars would be a natural consequence if Witten's strange quark matter hypothesis is correct. The methodology presented in this article is a recreation of a recent representation of nuclear force interactions embedded within pycnonuclear reaction processes. The study then extends the methodology to incorporate distinctive theoretical characteristics of strange quark matter nuggets, like their low charge-per-baryon ratio, and then assesses their effects on the pycnonuclear reaction rates. Particular emphasis is put on the impact of color superconductivity on the reaction rates. Depending on whether quark nuggets are in this novel state of matter, their electric charge properties vary drastically, which turns out to have a dramatic effect on the pycnonuclear reaction rates. Future nuclear fusion network calculations may thus have the potential to shed light on the existence of strange quark matter nuggets and on whether they are in a color superconducting state, as suggested by QCD.

Golf, B.; Hellmers, J.; Weber, F. [Department of Physics, San Diego State University, 5500 Campanile Drive, San Diego, California 92182 (United States)

2009-07-15T23:59:59.000Z

473

A new form of strange matter and new hope for finding it  

SciTech Connect

Deep in the dense cores of collapsed stars even atoms don't survive. The force of gravity crushes them into particle mushes weighing megatons per teaspoon. But even these alien forms of matter don't hold a candle to another possible end product of a collapsing star: something physicists justifiably call strange matter. This strangeness comes from an exotic particle not associated with ordinary matter: the strange quark. It belongs to a six-member quark family, along with up, down, charm, top, and bottom, each of which carries a different combination of charge and mass. The only ones that make up matter as we know it are up and down quarks, but in theory, matter could form out of strange quarks as well. In nature, it would turn up most probably in interiors of collapsed stars. Scientists originally imagined strange matter as a sort of disorganized mixed bag of strange quarks, but this summer a group proposed that the quarks could form a sort of mutant atomic nucleus that could conceivably grow to the size of a star. For the moment this is speculation, but it may not be theoretical musing for long. Physicists are preparing to try making strange matter here on Earth, in experiments at Brookhaven National Laboratory in New York and Switzerland's CERN, next summer.

Flam, F.

1993-10-08T23:59:59.000Z

474

Brookhaven Condensed Matter Physics  

NLE Websites -- All DOE Office Websites (Extended Search)

Condensed Matter Physics Condensed Matter Physics Condensed matter physicists study the properties of bulk matter-solids and liquids-as well as the properties exhibited at surfaces and interfaces, with a view to obtaining a fundamental understanding of the unusual properties that materials can exhibit. These problems are some of the most challenging in physics today, but have the huge pay-off in that such an understanding may ultimately lead to improved materials for use in applications as diverse as computing, memory storage, electric motors, and energy storage and transport. At Brookhaven Lab, this work includes both experimental and theoretical studies. Much of the experimental work carried out today uses the National Synchrotron Light Source (NSLS, shown at right)-one of the premiere synchrotron light sources of the last two decades. Commissioned in the 1980s, the NSLS is host to more than 2,200 users per year and produces copious amounts of light, from the infrared to the ultraviolet to the x-ray. By using this light as a probe, scientists can learn about the arrangement of the atoms and electrons in the materials and how they behave under various conditions. Among other projects, BNL scientists have played leading roles in the development and application of resonant and inelastic x-ray scattering techniques to the study of magnetic and other materials, have pioneered the use of photoemission techniques (based on the photoelectric effect that Einstein first understood 100 years ago) for looking at electronic and magnetic materials, and have carried out some of the seminal experiments to understand the atomic and magnetic structure at surfaces.

475

Inverse bremsstrahlung heating rate for dense plasmas in laser fields  

SciTech Connect

We report a theoretical analysis of inverse bremsstrahlung heating rate in the eikonal approximation. The present analysis is performed for a dense plasma using the screened electron-ion interaction potential for the ion charge state Z{sub i} = 1 and for both the weak and strong plasma screening cases. We have also compared the eikonal results with the first Born approximation (FBA) [M. Moll et al., New J. Phys. 14, 065010 (2012)] calculation. We find that the magnitudes of inverse bremsstrahlung heating rate within the eikonal approximation (EA) are larger than the FBA values in the weak screening case (? = 0.03 a.u.) in a wide range of field strength for three different initial electron momenta (2, 3, and 4 a.u.). But for strong screening case (? = 0.3 a.u.), the heating rates predicted by the two approximations do not differ much after reaching their maximum values. Furthermore, the individual contribution of photoemission and photoabsorption processes to heating rate is analysed for both the weak and strong screening cases. We find that the single photoemission and photoabsorption rates are the same throughout the field strength while the multiphoton absorption process dominates over the multiphoton emission process beyond the field strength ? 4×10{sup 8} V/cm. The present study of the dependence of heating rate on the screening parameter ranging from 0.01 to 20 shows that whereas the heating rate predicted by the EA is greater than the FBA up to the screening parameter ? = 0.3 a.u., the two approximation methods yield results which are nearly identical beyond the above value.

Dey, R. [D-203, Samruddhi Residency, Motera, Ahmedabad-380009, Gujarat (India)] [D-203, Samruddhi Residency, Motera, Ahmedabad-380009, Gujarat (India); Roy, A. C. [School of Mathematical Sciences, Ramakrishna Mission Vivekananda University, Belur Math 711202, West Bengal (India)] [School of Mathematical Sciences, Ramakrishna Mission Vivekananda University, Belur Math 711202, West Bengal (India)

2013-07-15T23:59:59.000Z

476

Measurement of the electrical resistivity of a dense strongly coupled plasma  

Science Journals Connector (OSTI)

We present measurements of the electrical resistivity of a dense strongly coupled plasma. This plasma is created in a comprehensively diagnosed capillary discharge that produces uniform well-characterized dense plasmas. Data for polyurethane at densities ?=0.01?0, where ?0=1.265 g/cm3, and temperatures in the 25–30 eV range are compared with several dense plasma theories, and show a significant disagreement. These results are of importance for the modeling of pulsed power experiments and the understanding of transport processes in many astrophysical plasmas.

J. F. Benage, Jr., W. R. Shanahan, E. G. Sherwood, L. A. Jones, and R. J. Trainor

1994-05-01T23:59:59.000Z

477

Search for bosonic superweakly interacting massive dark matter particles with the XMASS-I detector  

E-Print Network (OSTI)

Bosonic superweakly interacting massive particles (super-WIMPs) are a candidate for warm dark matter. With the absorption of such a boson by a xenon atom these dark matter candidates would deposit an energy equivalent to their rest mass in the detector. This is the first direct detection experiment exploring the vector super-WIMPs in the mass range between 40 and 120 keV. Using 165.9 days of data no significant excess above background was observed in the fiducial mass of 41 kg. The present limit for the vector super-WIMPs excludes the possibility that such particles constitute all of dark matter. The absence of a signal also provides the most stringent direct constraint on the coupling constant of pseudoscalar super-WIMPs to electrons. The unprecedented sensitivity was achieved exploiting the low background at a level $10^{-4}$ kg$^{-1}$keV$_{ee}^{-1}$day$^{-1}$ in the detector.

K. Abe; K. Hieda; K. Hiraide; S. Hirano; Y. Kishimoto; K. Ichimura; K. Kobayashi; S. Moriyama; K. Nakagawa; M. Nakahata; H. Ogawa; N. Oka; H. Sekiya; A. Shinozaki; Y. Suzuki; A. Takeda; O. Takachio; D. Umemoto; M. Yamashita; B. S. Yang; S. Tasaka; J. Liu; K. Martens; K. Hosokawa; K. Miuchi; A. Murata; Y. Onishi; Y. Otsuka; Y. Takeuchi; Y. H. Kim; K. B. Lee; M. K. Lee; J. S. Lee; Y. Fukuda; Y. Itow; K. Masuda; H. Takiya; H. Uchida; N. Y. Kim; Y. D. Kim; F. Kusaba; K. Nishijima; K. Fujii; I. Murayama; S. Nakamura

2014-08-21T23:59:59.000Z

478

Future-oriented women will pay to reduce global warming: Mediation via political orientation, environmental values, and belief in global warming  

Science Journals Connector (OSTI)

Abstract The present work addresses calls to clarify the role of gender in climate change mitigation and adaptation by testing a theoretical model linking gender and concern with future and immediate consequences to mitigation actions through political orientation, environmental values, and belief in global warming (gender × time orientation ? liberal political orientation ? environmental values ? belief in global warming ? willingness to pay to reduce global warming). Drawing on a sample of 299 U.S. residents, structural equation modeling and bootstrapped indirect effects testing revealed support for the model. Interaction analyses further revealed that women scored higher than men on model variables among respondents who routinely consider the future consequences of their actions, but the gender difference was reversed among those low in concern with future consequences (on liberal political orientation and willingness to pay to reduce global warming). Practical and theoretical implications are considered.

Jeff Joireman; Richie L. Liu

2014-01-01T23:59:59.000Z

479

The Effect of the Sea Ice Freshwater Flux on Southern Ocean Temperatures in CCSM3: Deep-Ocean Warming and Delayed Surface Warming  

Science Journals Connector (OSTI)

This study explores the role of sea ice freshwater and salt fluxes in modulating twenty-first-century surface warming in the Southern Ocean via analysis of sensitivity experiments in the Community Climate System Model, version 3 (CCSM3). In ...

Clark H. Kirkman IV; Cecilia M. Bitz

2011-05-01T23:59:59.000Z

480

Magnetic moment of hyperons in nuclear matter by using quark-meson coupling models  

E-Print Network (OSTI)

We calculate the magnetic moments of hyperons in dense nuclear matter by using relativistic quark models. Hyperons are treated as MIT bags, and the interactions are considered to be mediated by the exchange of scalar and vector mesons which are approximated as mean fields. Model dependence is investigated by using the quark-meson coupling model and the modified quark-meson coupling model; in the former the bag constant is independent of density and in the latter it depends on density. Both models give us the magnitudes of the magnetic moments increasing with density for most octet baryons. But there is a considerable model dependence in the values of the magnetic moments in dense medium. The magnetic moments at the nuclear saturation density calculated by the quark meson coupling model are only a few percents larger than those in free space, but the magnetic moments from the modified quark meson coupling model increase more than 10% for most hyperons. The correlations between the bag radius of hyperons and the magnetic moments of hyperons in dense matter are discussed.

C. Y. Ryu; C. H. Hyun; T. -S. Park; S. W. Hong

2008-06-06T23:59:59.000Z

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481

Microsoft Word - Warm Rinse Guidance 6 29 2010_FINAL _2_  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The following is a draft U.S. Department of Energy interpretive rule, which sets out the The following is a draft U.S. Department of Energy interpretive rule, which sets out the Department's views on the application of the clothes washer testing procedure described in 10 CFR § 430 Appendix J1. This draft interpretive rule represents the Department's interpretation of its existing regulations and is exempt from the notice and comment requirements of the Administrative Procedure Act. See 5 U.S.C. § 553(b)(A). Nevertheless, we are interested in receiving feedback from the public on the interpretation set forth below. Therefore, the Department is accepting comments from the public until July 30, 2010. Comments should be provided in WordPerfect, Microsoft Word, PDF, or text file format by sending an email to: WarmRinse.FAQ@hq.doe.gov. At the end of the

482

Global warming and transport in Brazil - ethanol alternative  

Science Journals Connector (OSTI)

This paper deals with the risk of global warming as intensified by the carbon dioxide (CO2) emissions of the transport sector, particularly in gasoline-powered vehicles in Brazil. Car ownership and use are increasing rapidly partly because of very poor public transport quality, which, in turn, is causing higher emission levels of CO2. In this connection, the use of ethanol in Brazil for the transport sector may prove to be an important alternative, furthering the efforts to stabilise the actual level of gases in the atmosphere. The energy derived from biomass, and in this case, from a renewable, ''clean'' source, i.e., from sugar-cane, has the unquestionable advantage of permitting the almost complete reabsorption of CO2 emitted through the combustion of fuel alcohol. This closed cycle allows, in principle, the increase of the energy supply, essential for economic development, with fewer hazards to the environment.

Suzana Kahn Ribeiro; Pauline Staib Younes-Ibrahim

2001-01-01T23:59:59.000Z

483

Minimising the global warming potential of clay based geopolymers  

Science Journals Connector (OSTI)

Abstract Production of Portland cement (PC) binders contributes substantially to global CO2 production and various bodies including the Intergovernmental Panel on Climate Change (IPCC) have identified geopolymers as alternative binders with the potential to reduce these emissions. The hypothesis of this research is to investigate whether this is a realistic proposition in the light of limited waste materials such as fly ash and ground granulated blast furnace slag commonly used as geopolymer precursors. The effect of use of natural clay minerals as alternative precursors on global warming potential (GWP) is investigated. Methods of designing mixes with the lowest possible GWP are presented and these are compared to the GWP of PC and currently available metakaolin based geopolymer binders. It is concluded that it is possible to reduce the GWP by approximately 40%, but other impacts may increase.

Andrew Heath; Kevin Paine; Marcelle McManus

2014-01-01T23:59:59.000Z

484

Effective thermal conduction model for estimating global warming  

Science Journals Connector (OSTI)

This paper presents a simple way to approximate the dependence of the global mean air temperature at Earth’s surface on the atmospheric concentration of carbon dioxide. It treats the atmosphere as a blanket the effective thermal conductivity of which is a decreasing function of the amount of CO 2 present and does not involve the details of energy transport. The only data required are the CO 2 concentrations at the middle of the nineteenth and the end of the twentieth centuries and the shift in temperature that has occurred over that time. This elementary phenomenological energy-balance approach is well suited for undergraduate physics courses to illustrate thermal conduction and radiation by way of the very interesting and critically important example of greenhouse warming of Earth.

Anthony B. Wolbarst

1999-01-01T23:59:59.000Z

485

Nuclear energy conversion systems for arresting global warming  

Science Journals Connector (OSTI)

Presently the global warming by CO2 emission from fossil fuel burning is becoming a serious issue. Especially, coal is the worse fossil fuel, because it emits the largest amount of CO2 per unit amount of heat generation. There seem to be two ways of reducing substantial CO2 emission rate of coal; they are, reforming coal to synthesis fuel with less CO2 emission and removing CO2 from flue gas of coal fired power station after burning coal. Present paper proposes two nuclear heat application systems which reform coal to methanol and four systems which produce chemical products or gasoline with CO2 collected from flue gas of coal fired power stations, as future options for reducing CO2 emission from coal. Advantage and disadvantage of the proposed systems are discussed.

M. Hishida; M. Fumizawa; Y. Inaba; M. Aritomi; S. Nomura; S. Kosaka; S. Yamada; K. Ogata

1997-01-01T23:59:59.000Z

486

Ultra-High Intensity Magnetic Field Generation in Dense Plasma  

SciTech Connect

I. Grant Objective The main objective of this grant proposal was to explore the efficient generation of intense currents. Whereasthefficient generation of electric current in low-­?energy-­? density plasma has occupied the attention of the magnetic fusion community for several decades, scant attention has been paid to carrying over to high-­?energy-­? density plasma the ideas for steady-­?state current drive developed for low-­?energy-­? density plasma, or, for that matter, to inventing new methodologies for generating electric current in high-­?energy-­?density plasma. What we proposed to do was to identify new mechanisms to accomplish current generation, and to assess the operation, physics, and engineering basis of new forms of current drive in regimes appropriate for new fusion concepts.

Fisch, Nathaniel J

2014-01-08T23:59:59.000Z

487

Constructing warm inflationary model in brane-antibrane system  

E-Print Network (OSTI)

Recently, various observational data predict a possibility that inflation may naturally occur in a warm region. In this scenario, radiation is produced during the inflation epoch and reheating is avoided. The main question arises that what is the origin of warm inflation in 4D universe? We answer to this question in brane-antibrane system. We propose a model that allows all cosmological parameters like the scale factor a, the Hubble parameter H and phantom energy density depend on the equation of state parameter in transverse dimension between two branes. Thus, an enhancement in these parameters can be a signature of some evolutions in extra dimension. In our model, the expansion of 4D universe is controlled by the separation distance between branes and evolves from non-phantom phase to phantom one. Consequently, phantom-dominated era of the universe accelerates and ends up in big-rip singularity. Also, we show that as the tachyon potential increases, the effect of interaction between branes on the 4D universe expansion becomes systematically more effective, because at higher energies there exists more channels for flowing energy from extra dimension to other four dimensions. Finally, we test our model against WMAP and Planck data and obtain the ripping time. According to experimental data, $N\\simeq 50$ case leads to $n_{s}\\simeq 0.96$, where \\emph{N} and $n_{s}$ are the number e-folds and the spectral index respectively. This standard case may be found in $0.01 occurs is $t_{rip}=33(Gyr)$.

M. R. Setare; A. Sepehri; V. Kamali

2014-05-30T23:59:59.000Z

488

MaGICC-WDM: the effects of warm dark matter in hydrodynamical simulations of disc galaxy formation  

Science Journals Connector (OSTI)

......the smoothed particle hydrodynamics code gasoline (Wadsley, Stadel Quinn 2004). It includes...those properties for the WDM1 case, in runs performed with different stellar feedback...orbits. While the satellite of g1536 falls straight into the centre of the host galaxy the......

Jakob Herpich; Gregory S. Stinson; Andrea V. Macciò; Chris Brook; James Wadsley; Hugh M. P. Couchman; Tom Quinn

2014-01-01T23:59:59.000Z

489

Integrated dense array and transect MT surveying at dixie valley geothermal  

Open Energy Info (EERE)

dense array and transect MT surveying at dixie valley geothermal dense array and transect MT surveying at dixie valley geothermal area, Nevada- structural controls, hydrothermal alteration and deep fluid sources Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Integrated dense array and transect MT surveying at dixie valley geothermal area, Nevada- structural controls, hydrothermal alteration and deep fluid sources Authors Philip E. Wannamaker, William M. Doerner and Derrick P. Hasterok Conference proceedings, 32th workshop on geothermal reservoir Engineering, Stanford University; Stanford University; 2007 Published Publisher Not Provided, 2007 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Integrated dense array and transect MT surveying at dixie valley geothermal area, Nevada- structural controls, hydrothermal

490

Do children acquire dense neighborhoods? An investigation of similarity neighborhoods in lexical acquisition  

E-Print Network (OSTI)

This study tests the claim that children acquire collections of phonologically similar word forms. namely, dense neighborhoods. Age of acquisition (AoA) norms were obtained front two databases: parent report of infant and ...

Storkel, Holly Lynn

2004-04-01T23:59:59.000Z

491

Microwave heating of electrons of a dense plasma column at frequencies higher than electron cyclotron frequency  

Science Journals Connector (OSTI)

In this experimental study the absorption of plasma waves, excited in a dense plasma column, was investigated and the localization of the regions of efficient heating of electrons were determined in a broad...ce/...

J. ?atlov; L. Kryška; V. N. Budnikov

1973-01-01T23:59:59.000Z

492

Unsteady effects in dense, high speed, particle laden flows J.D. Regele a,  

E-Print Network (OSTI)

t Dense high speed non-compacted multiphase flows exist in variable phase turbines, explosions, and ejec multiphase flows can be found in a variety of practical applications such as variable phase turbines

Dabiri, John O.

493

Dense Plasma Focus Fusion Neutron Sources Progress at NSTec, September 2011  

SciTech Connect

A number of dense plasma focus (DPF) sources are introduced, including their operating characteristics and current activities. Neutron resonance spectroscopy is discussed and the feasibility of using DPF for neutron sources is considered.

Hagen, E. C.

2011-07-02T23:59:59.000Z

494

Climate Change: Sources of Warming in the Late 20th Century  

E-Print Network (OSTI)

The role of the North Atlantic Oscillation, the Pacific Decadal Oscillation, volcanic and other aerosols, as well as the extraordinary solar activity of the late 20th century are discussed in the context of the warming since the mid-1970s. Much of that warming is found to be due to natural causes.

Gerald E. Marsh

2009-05-28T23:59:59.000Z

495

Entropy Shows that Global Warming Should Cause Increased Variability in the Weather  

E-Print Network (OSTI)

Elementary physical reasoning seems to leave it inevitable that global warming would increase the variability of the weather. The first two terms in an approximation to the global entropy are used to show that global warming has increased the free energy available to drive the weather, and that the variance of the weather should increase correspondingly.

John Michael Williams

2000-08-28T23:59:59.000Z

496

Upward Shift of the Atmospheric General Circulation under Global Warming: Theory and Simulations  

E-Print Network (OSTI)

, including upward shifts in the ver- tical velocities and distributions of cloud water and ice as the seaUpward Shift of the Atmospheric General Circulation under Global Warming: Theory and Simulations circulation of the atmosphere shift upward in response to warming in simu- lations of climate change with both

O'Gorman, Paul

497

Sea surface height evidence for long-term warming effects of tropical cyclones on the ocean  

Science Journals Connector (OSTI)

...warming effect by 1 y: with . 1 Price JF ( 1981 ) Upper ocean response...Mechanics Series, ed Perrie W (WIT Press, Southampton, UK), Vol...357 – 374 . 5 Sanford TB Price JF Girton JB ( 2011 ) Upper-ocean...135 ( 12 ): 3990 – 4005 . 9 Price JF Morzel J Niiler PP ( 2008 ) Warming of...

Wei Mei; François Primeau; James C. McWilliams; Claudia Pasquero

2013-01-01T23:59:59.000Z

498

The Return of Dr Strangelove The politics of climate engineering as a response to global warming  

E-Print Network (OSTI)

The Return of Dr Strangelove The politics of climate engineering as a response to global warming volcanic eruptions to counter the warming effects of carbon pollution. Engineering the planet's climate the air, where its concentration is 0.04 per cent, than from the exhaust of a coal-fired power plant. Sun

Green, Donna

499

ICE SHEETS, GLOBAL WARMING, AND ARTICLE 2 OF THE UNFCCC An Editorial Essay  

E-Print Network (OSTI)

such rapid-loss mechanisms, models cannot produce a stable ice sheet above some local warming thresholdICE SHEETS, GLOBAL WARMING, AND ARTICLE 2 OF THE UNFCCC An Editorial Essay 1. Introduction Rapid disintegration of the West Antarctic ice sheet (WAIS) was cited decades ago as a potentially severe consequence

Oppenheimer, Michael

500

The surface diurnal warm layer in the Indian Ocean during CINDY/DYNAMO  

Science Journals Connector (OSTI)

A surface diurnal warm layer is diagnosed from Seaglider observations, and develops on half the days in the CINDY/DYNAMO Indian Ocean experiment. The diurnal warm layer occurs on days of high solar radiation flux (> 80 W m?2) and low wind speed (< ...

Adrian J. Matthews; Dariusz B. Baranowski; Karen J. Heywood; Piotr J. Flatau; Sunke Schmidtko