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Note: This page contains sample records for the topic "global direct diffuse" from the National Library of EnergyBeta (NLEBeta).
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1

Human Impact on Direct and Diffuse Solar Radiation during the Industrial Era  

Science Journals Connector (OSTI)

In this study the direct and diffuse solar radiation changes are estimated, and they contribute to the understanding of the observed global dimming and the more recent global brightening during the industrial era. Using a multistream radiative ...

Maria M. Kvalevåg; Gunnar Myhre

2007-10-01T23:59:59.000Z

2

GLOBAL WELL-POSEDNESS FOR THE 2D BOUSSINESQ SYSTEM WITHOUT HEAT DIFFUSION AND WITH EITHER  

E-Print Network [OSTI]

GLOBAL WELL-POSEDNESS FOR THE 2D BOUSSINESQ SYSTEM WITHOUT HEAT DIFFUSION AND WITH EITHER: 612/626-7370 URL: http://www.ima.umn.edu #12;GLOBAL WELL-POSEDNESS FOR THE 2D BOUSSINESQ SYSTEM for the two-dimensional non-diffusive Boussinesq system with viscosity only in the horizontal direction, which

3

GLOBAL WELL-POSEDNESS FOR THE 2D BOUSSINESQ SYSTEM WITHOUT HEAT DIFFUSION AND WITH EITHER  

E-Print Network [OSTI]

GLOBAL WELL-POSEDNESS FOR THE 2D BOUSSINESQ SYSTEM WITHOUT HEAT DIFFUSION AND WITH EITHER-diffusive Boussinesq system with viscosity only in the horizontal direction, which arises in Ocean dynamics. This work for the Boussinesq system with anisotropic viscosity and zero diffusion. Al- though we follow some of their ideas

Larios, Adam

4

Direct Sampling Method for Diffusive Optical Tomography  

E-Print Network [OSTI]

In this work, we are concerned with the diffusive optical tomography (DOT) problem in the case when only one or two pairs of Cauchy data is available. We propose a simple and efficient direct sampling method (DSM) to locate inhomogeneities inside a homogeneous background and solve the DOT problem in both full and limited aperture cases. This new method is easy to implement and less expensive computationally. Numerical experiments demonstrate its effectiveness and robustness against noise in the data. This provides a new promising numerical strategy for the DOT problem.

Yat Tin Chow; Kazufumi Ito; Keji Liu; Jun Zou

2014-10-06T23:59:59.000Z

5

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Honduras from SUNY Honduras from SUNY Dataset Summary Description (Abstract): Zip file contains year-site specific files including time series of global, direct and diffuse irradiance (Purpose): The time series are useful for performing site specific simulation of customized solar energy systems (Supplemental Information): Each file's name identifies year and location, by listing Country_City_latitude-longitude_year, e.g., EL_SALVADOR_San_Salvador_13.75-89.15_98.out is for the city of San Salvador, in El Salvador, latitude 13.75 degrees, longitude -89.15 degrees, year 1998. The content of each file includes A one line header, listing latitude, longitude and ground elevation in meters,Hourly records including, year, month, day, time (GMT), global irradiance, direct irradiance and

6

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Nicaragua from SUNY Nicaragua from SUNY Dataset Summary Description (Abstract): Zip file contains year-site specific files including time series of global, direct and diffuse irradiance (Purpose): The time series are useful for performing site specific simulation of customized solar energy systems (Supplemental Information): Each file's name identifies year and location, by listing Country_City_latitude-longitude_year, e.g., EL_SALVADOR_San_Salvador_13.75-89.15_98.out is for the city of San Salvador, in El Salvador, latitude 13.75 degrees, longitude -89.15 degrees, year 1998. The content of each file includes A one line header, listing latitude, longitude and ground elevation in meters,Hourly records including, year, month, day, time (GMT), global irradiance, direct irradiance and

7

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Guatemala from SUNY Guatemala from SUNY Dataset Summary Description (Abstract): Zip file contains year-site specific files including time series of global, direct and diffuse irradiance (Purpose): The time series are useful for performing site specific simulation of customized solar energy systems (Supplemental Information): Each file's name identifies year and location, by listing Country_City_latitude-longitude_year, e.g., EL_SALVADOR_San_Salvador_13.75-89.15_98.out is for the city of San Salvador, in El Salvador, latitude 13.75 degrees, longitude -89.15 degrees, year 1998. The content of each file includes A one line header, listing latitude, longitude and ground elevation in meters,Hourly records including, year, month, day, time (GMT), global irradiance, direct irradiance and

8

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Cuba sites from SUNY Cuba sites from SUNY Dataset Summary Description (Abstract): Zip file contains year-site specific files including time series of global, direct and diffuse irradiance (Purpose): The time series are useful for performing site specific simulation of customized solar energy systems (Supplemental Information): Each file's name identifies year and location, by listing Country_City_latitude-longitude_year, e.g., EL_SALVADOR_San_Salvador_13.75-89.15_98.out is for the city of San Salvador, in El Salvador, latitude 13.75 degrees, longitude -89.15 degrees, year 1998. The content of each file includes A one line header, listing latitude, longitude and ground elevation in meters,Hourly records including, year, month, day, time (GMT), global irradiance, direct irradiance and

9

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

El Salvador sites from SUNY El Salvador sites from SUNY Dataset Summary Description (Abstract): Zip file contains year-site specific files including time series of global, direct and diffuse irradiance (Purpose): The time series are useful for performing site specific simulation of customized solar energy systems (Supplemental Information): Each file's name identifies year and location, by listing Country_City_latitude-longitude_year, e.g., EL_SALVADOR_San_Salvador_13.75-89.15_98.out is for the city of San Salvador, in El Salvador, latitude 13.75 degrees, longitude -89.15 degrees, year 1998. The content of each file includes A one line header, listing latitude, longitude and ground elevation in meters,Hourly records including, year, month, day, time (GMT), global irradiance, direct irradiance and

10

What drives global ICT adoption? Analysis and research directions  

Science Journals Connector (OSTI)

Information and communication technology (ICT) adoption is increasing globally and offers unique opportunities for information systems (IS) and electronic commerce researchers to undertake research that will have an impact. The purpose of this article ... Keywords: Adoption, Behavioral explanations, Diffusion, Economic explanations, Global perspective, ICT, Policy issues, Technology adoption

David M. Weber; Robert J. Kauffman

2011-11-01T23:59:59.000Z

11

Sensitivity of Climate to Diapycnal Diffusivity: Part I. Equilibrium State; Part II. Global Warming Scenario  

E-Print Network [OSTI]

Part I: The diapycnal diffusivity in the ocean is one of the least known parameters in current climate models. Measurements of this diffusivity are sparse and insufficient for compiling a global map. Inferences from inverse ...

Dalan, Fabio.

12

Implementation of a Stochastic Eddy-Diffusivity/Mass-Flux Parameterization into the Navy Global Environmental Model  

Science Journals Connector (OSTI)

A unified boundary layer and shallow convection parameterization based on a stochastic eddy-diffusivity/mass-flux (EDMF) approach is implemented and tested in the Navy Global Environmental Model (NAVGEM). The primary goals of this work are to ...

Kay Sušelj; Timothy F. Hogan; João Teixeira

2014-12-01T23:59:59.000Z

13

The Enemy is Still Below: The Global Diffusion of Submarines and Related Technology  

SciTech Connect (OSTI)

The spread of submarines and related technology is an end product of globalization. Globalization is not a new story. By one estimate, our ancestors first crossed out of Africa roughly 80,000 years ago, and began the process that they now call globalization. With the dispersion of people around the world came the development of culture and civilization as well as the spread of ideas, goods, and technology. The process of globalization then is a long-standing one, not an innovation of the late 20th and early 21st centuries. Over the millennia, this process has been an uneven one. Globalization has often cuased great disruptions even to the societies that initiated various innovations in culture and civilization, including science and technology. Indeed, many cultures and civilizations have disappeared while some regions failed to advance as rapidly as others, so the process of globalization is not just one of continuing progress. Globalization in the current era seems to be penetrating the most remote corners of the world at a remarkable rate as a result of advances in science and technology, particularly information technology. The diffusion of science and technology is not necessarily a benign development. It could increase the potential for a global military industrial base that may have an adverse affect on world stability in the future. For example, the spread of key military capabilities, like submarines, could still have an impact, especially over the longer term, on the US capability to project power overseas.

Weiss, K G

2012-06-05T23:59:59.000Z

14

Replacement of chlorofluorocarbons (CFCs) at the DOE gaseous diffusion plants: An assessment of global impacts  

SciTech Connect (OSTI)

The US Department of Energy (DOE) formerly operated two gaseous diffusion plants (GDPs) for enriching uranium and maintained a third shutdown GDP. These plants maintain a large inventory of dichlorotetrafluorethane (CFC-114), a cholorofluorocarbon (CFC), as a coolant. The paper evaluates the global impacts of four alternatives to modify GDP coolant system operations for a three-year period beginning in 1996. Interim modification of GDP coolant system operations has the potential to reduce stratospheric ozone depletion from GDP coolant releases while a permanent solution is studied.

Socolof, M.L.; Saylor, R.E.; McCold, L.N.

1994-06-01T23:59:59.000Z

15

Estimation of hourly global and diffuse solar radiation from hourly sunshine duration  

SciTech Connect (OSTI)

A statistical procedure has been employed to develop correlations of monthly-mean-hourly global and diffuse solar radiation on a horizontal surface to hourly sunshine duration. Several years of measured data on solar radiation and sunshine duration, reported in the literature for two stations in the southern African region, is employed for this purpose. The applicability of the developed correlations is tested by estimating solar radiation for a new location. The excellent agreement between the measured and estimated data for that station the wide applicability of the method.

Gopinathan, K.K (National Univ. of Lesotho, Roma (South Africa))

1992-01-01T23:59:59.000Z

16

Comparing local vs. global visible and near-infrared (VisNIR) diffuse reflectance spectroscopy (DRS) calibrations for the prediction of soil clay, organic C  

E-Print Network [OSTI]

Comparing local vs. global visible and near-infrared (VisNIR) diffuse reflectance spectroscopy (DRS Elsevier B.V. All rights reserved. 1. Introduction Visible and near-infrared (VisNIR) diffuse reflectance

Lawrence, Rick L.

17

The transnational diffusion of global environmental concerns via INGOs in China : a new framework for understanding diffusion in authoritarian contexts  

E-Print Network [OSTI]

as coals, is an important contributor to global warming.coal, and the world’s second largest carbon emitter (The World Bank 1997), China is viewed as a major contributor to global warming.

Matsuzawa, Setsuko

2007-01-01T23:59:59.000Z

18

The dynamics of technology diffusion and the impacts of climate policy instruments in the decarbonisation of the global electricity sector  

E-Print Network [OSTI]

This paper presents an analysis of possible uses of climate policy instruments for the decarbonisation of the global electricity sector in a non-equilibrium economic and technology innovation-diffusion perspective. Emissions reductions occur through changes in technology and energy consumption; in this context, investment decision-making opportunities occur periodically, which energy policy can incentivise in order to transform energy systems and meet reductions targets. Energy markets are driven by innovation, dynamic costs and technology diffusion; yet, the incumbent systems optimisation methodology in energy modelling does not address these aspects nor the effectiveness of policy onto decision-making since the dynamics modelled take their source from the top-down `social-planner' assumption. This leads to an underestimation of strong technology lock-ins in cost-optimal scenarios of technology. Our approach explores the global diffusion of low carbon technology in connection to a highly disaggregated sector...

Mercure, J -F; Foley, A M; Chewpreecha, U; Pollitt, H

2013-01-01T23:59:59.000Z

19

On the effect of gas diffusion layers hydrophobicity on direct methanol fuel cell performance and degradation  

Science Journals Connector (OSTI)

Abstract Degradation and mass transport phenomena management are two of the main issues hindering direct methanol fuel cell commercialization. Water and methanol crossover through the membrane, regulated by both anode and cathode gas diffusion layers hydrophobic properties, is widely studied in the literature, while the effect of mass transport phenomena evolution on the direct methanol fuel cell degradation has not been investigated yet. This work aims to present a combined experimental and modeling analysis on the effect of the gas diffusion layers hydrophobicity on DMFC degradation, through the comparison of performance characterization and degradation tests of two different fuel cells. In one of them, the lower diffusion layer hydrophobicity and the absence of anode microporous layer determines the onset of cathode flooding, negatively affecting performance and degradation. However, the cathode surface area loss is similar between the two fuel cells, meaning that flooding does not involve modifications in cathode permanent degradation mechanisms, but it mainly determines the amplification of the cathode surface area loss effects.

F. Bresciani; C. Rabissi; M. Zago; R. Marchesi; A. Casalegno

2015-01-01T23:59:59.000Z

20

DIPOLE COLLAPSE AND DYNAMO WAVES IN GLOBAL DIRECT NUMERICAL SIMULATIONS  

SciTech Connect (OSTI)

Magnetic fields of low-mass stars and planets are thought to originate from self-excited dynamo action in their convective interiors. Observations reveal a variety of field topologies ranging from large-scale, axial dipoles to more structured magnetic fields. In this article, we investigate more than 70 three-dimensional, self-consistent dynamo models in the Boussinesq approximation obtained by direct numerical simulations. The control parameters, the aspect ratio, and the mechanical boundary conditions have been varied to build up this sample of models. Both strongly dipolar and multipolar models have been obtained. We show that these dynamo regimes in general can be distinguished by the ratio of a typical convective length scale to the Rossby radius. Models with a predominantly dipolar magnetic field were obtained, if the convective length scale is at least an order of magnitude larger than the Rossby radius. Moreover, we highlight the role of the strong shear associated with the geostrophic zonal flow for models with stress-free boundary conditions. In this case the above transition disappears and is replaced by a region of bistability for which dipolar and multipolar dynamos coexist. We interpret our results in terms of dynamo eigenmodes using the so-called test-field method. We can thus show that models in the dipolar regime are characterized by an isolated 'single mode'. Competing overtones become significant as the boundary to multipolar dynamos is approached. We discuss how these findings relate to previous models and to observations.

Schrinner, Martin; Dormy, Emmanuel [MAG (ENS/IPGP), LRA, Ecole Normale Superieure, 24 Rue Lhomond, 75252 Paris Cedex 05 (France); Petitdemange, Ludovic, E-mail: martin@schrinner.eu [Previously at Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, 69117 Heidelberg, Germany. (Germany)

2012-06-20T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

The Enemy Below - The Global Diffusion of Submarines and Related Technology  

SciTech Connect (OSTI)

The end of the Cold War seemed to create a more peaceful international environment. September 11 reminded us of the dangers of complacency. Indeed, even before September 11 US forces had intervened in a number of wars and crises, including Panama, the Persian Gulf War, Somalia, Rwanda, Bosnia, Kosovo, several Taiwan Straits crises, the North Korea nuclear weapons crisis, and most recently Afghanistan. US ability to intervene in remote areas of the world is often dependent on the Navy's ability to project power ashore. As a result, US ability to influence events in crisis situations, especially between or among nuclear powers, may become more difficult along with our ability to conduct littoral warfare. Although the numbers of potentially hostile submarines have declined with the end of the Cold War, US anti-submarine warfare capabilities have also declined. Moreover, foreign submarines and related technologies are likely to diffuse globally. New technologies like Air Independent Propulsion (AIP), improved weapons and sensors will make conventional submarines more dangerous, and the spread of nuclear submarines even to a few more countries raise political, military, environmental, and safety concerns. Submarines are one of the key weapon systems used alone or in combination with other weapon systems such as coastal defense missiles, aircraft, and other sea-based missile platforms to deny US ability to project power ashore, Thus, other countries who wish to deny the US the ability to interfere with their regional or even global ambitions may emphasize the acquisition and/or development of submarines. As the world become more multipolar over the longer term, as the Chinese believe it will, countries such as Russia, China. etc., may be able to acquire the submarine capabilities to challenge us not just regionally, but in blue waters. To the extent that our alliance relationships require US naval access or superiority to sustain them, then our erstwhile friendly allies such as Japan, South Korea, ASEAN states, Taiwan, etc., may seek their own arrangements with other powers for their protection or seek WMD capabilities to offset the former reliance on the US. In addition to a loss of unchallenged regional access, the US may have to devote greater resources for protecting its homeland, and perhaps its sea-based deterrent, from hostile submarine forces.

Weiss, K G

2002-09-05T23:59:59.000Z

22

The dynamics of technology diffusion and the impacts of climate policy instruments in the decarbonisation of the global electricity sector  

Science Journals Connector (OSTI)

Abstract This paper presents an analysis of climate policy instruments for the decarbonisation of the global electricity sector in a non-equilibrium economic and technology diffusion perspective. Energy markets are driven by innovation, path-dependent technology choices and diffusion. However, conventional optimisation models lack detail on these aspects and have limited ability to address the effectiveness of policy interventions because they do not represent decision-making. As a result, known effects of technology lock-ins are liable to be underestimated. In contrast, our approach places investor decision-making at the core of the analysis and investigates how it drives the diffusion of low-carbon technology in a highly disaggregated, hybrid, global macroeconometric model, FTT:Power-E3MG. Ten scenarios to 2050 of the electricity sector in 21 regions exploring combinations of electricity policy instruments are analysed, including their climate impacts. We show that in a diffusion and path-dependent perspective, the impact of combinations of policies does not correspond to the sum of impacts of individual instruments: synergies exist between policy tools. We argue that the carbon price required to break the current fossil technology lock-in can be much lower when combined with other policies, and that a 90% decarbonisation of the electricity sector by 2050 is affordable without early scrapping.

J.-F. Mercure; H. Pollitt; U. Chewpreecha; P. Salas; A.M. Foley; P.B. Holden; N.R. Edwards

2014-01-01T23:59:59.000Z

23

Impact of mesophyll diffusion on estimated global land CO2 fertilization  

E-Print Network [OSTI]

by Earth system models. Without this correction, the CFE for global GPP is underestimated by 0.05 Pg

Hoffman, Forrest M.

24

Solar UV-B in tropical forest gaps: Analysis using direct and diffuse radiation  

SciTech Connect (OSTI)

Experiments with natural levels of solar ultraviolet-B radiation (UV-B) have recently shown inhibition of the growth of some tropical forest tree seedlings. A knowledge of forest radiation environments is needed to help assess UV-B effects in natural situations. Although forest canopies strongly attenuate solar radiation, treefall gaps provide a very different radiation environment. We simultaneously measured both UV-B and photosynthetically active radiation (PAR) in forest gaps on Barro Colorado Island, Panama. Outside the forest, UV-B is predominately diffuse even under clear sky conditions. In sunflecks of small forest gaps, most of the UV-B was in the direct beam component. Compared to conditions outside the forest, the UV-B in these sunflecks was low relative to PAR. Shaded portions of the gap, in contrast, had proportionately high levels of UV-B relative to PAR. There are indications in the literature that relatively low UV-B levels may be effective under low PFD. Seasonal trends of PAR and UV-B in different locations in gaps can be inferred from hemispherical canopy photographs.

Flint, S.D.; Caldwell, M.M. [Utah State Univ., Logan, UT (United States)

1995-06-01T23:59:59.000Z

25

Light beams with general direction and polarization: global description and geometric phase  

E-Print Network [OSTI]

We construct the manifold describing the family of plane monochromatic light waves with all directions, polarizations, phases and intensities. A smooth description of polarization, valid over the entire sphere S^2 of directions, is given through the construction of an orthogonal basis pair of complex polarization vectors for each direction; any light beam is then uniquely and smoothly specified by giving its direction and two complex amplitudes. This implies that the space of all light beams is the six dimensional manifold S^2 X C^2, the Cartesian product of a sphere and a two dimensional complex vector space. A Hopf map (i.e mapping the two complex amplitudes to the Stokes parameters) then leads to the four dimensional manifold S^2 X S^2 which describes beams with all directions and polarization states. This product of two spheres can be viewed as an ordered pair of two points on a single sphere, in contrast to earlier work in which the same system was represented using Majorana's mapping of the states of a spin one quantum system to an unordered pair of points on a sphere. This is a different manifold, CP^2, two dimensional complex projective space, which does not faithfully represent the full space of all directions and polarizations. Following the now-standard framework, we exhibit the fibre bundle whose total space is the set of all light beams of non-zero intensity, and base space S^2 X S^2. We give the U(1) connection which determines the geometric phase as the line integral of a one-form along a closed curve in the total space. Bases are classified as globally smooth, global but singular, and local, with the last type of basis being defined only when the curve traversed by the system is given. Existing as well as new formulae for the geometric phase are presented in this overall framework.

R. Nityananda; S. Sridhar

2012-12-05T23:59:59.000Z

26

Steady-state directional diffuse reflectance and fluorescence of human skin  

E-Print Network [OSTI]

or tissue of interest to excitation light (typically UV) and measuring the flu- orescence emission spectrum or diffuse according to whether a laser or a diffuse light source is used. These measurements can be carried by a high- speed detection system. The advantage of time- resolved over steady-state measurements

Pilon, Laurent

27

Communications of the Association for Information Systems (Volume 15, 2005)371-392 371 Global Diffusion of the Internet VI: The Internet in Togo by A. Bernstein and S. Goodman  

E-Print Network [OSTI]

Georgia Institute of Technology ABSTRACT The Global Diffusion of the Internet (GDI) framework is used companies to utilize Togo Telecom's network. Keywords: Internet diffusion, Togo, ISP, Togo Telecom, GDI

Bieber, Michael

28

Direct constraints on diffusion models from cosmic-ray positron data: Excluding the minimal model for dark matter searches  

Science Journals Connector (OSTI)

Galactic cosmic-ray (CR) transport parameters are usually constrained by the boron-to-carbon ratio. This procedure is generically plagued with degeneracies between the diffusion coefficient and the vertical extent of the Galactic magnetic halo. The latter is of paramount importance for indirect dark matter (DM) searches because it fixes the amount of DM annihilation or decay that contributes to the local antimatter CR flux. These degeneracies could be broken by using secondary radioactive species, but the current data still have large error bars, and this method is extremely sensitive to the very local interstellar medium properties. Here, we propose to use the low-energy CR positrons in the GeV range as another direct constraint on diffusion models. We show that the PAMELA data disfavor small diffusion halo (L?3??kpc) and large diffusion slope models and exclude the minimal configuration [Maurin et al. Astrophys. J. 555, 585 (2001); Donato et al. Phys. Rev. D 69, 063501 (2004)] widely used in the literature to bracket the uncertainties in the DM signal predictions. This is complementary to indirect constraints (diffuse radio and gamma-ray emissions) and has a strong impact on DM searches. Indeed, this makes the antiproton constraints more robust while enhancing the discovery/exclusion potential of current and future experiments, like AMS-02 and GAPS, especially in the antiproton and antideuteron channels.

Julien Lavalle; David Maurin; Antje Putze

2014-10-15T23:59:59.000Z

29

Direct constraints on diffusion models from cosmic-ray positron data: Excluding the Minimal model for dark matter searches  

E-Print Network [OSTI]

Galactic Cosmic-ray (CR) transport parameters are usually constrained by the boron-to-carbon ratio. This procedure is generically plagued with degeneracies between the diffusion coefficient and the vertical extent of the Galactic magnetic halo. The latter is of paramount importance for indirect dark matter (DM) searches, because it fixes the amount of DM annihilation or decay that contributes to the local antimatter CR flux. These degeneracies could be broken by using secondary radioactive species, but the current data still have large error bars, and this method is extremely sensitive to the very local interstellar medium (ISM) properties. Here, we propose to use the low-energy CR positrons in the GeV range as another direct constraint on diffusion models. We show that the PAMELA data disfavor small diffusion halo ($L\\lesssim 3$ kpc) and large diffusion slope models, and exclude the minimal ({\\em min}) configuration (Maurin et al. 2001, Donato et al. 2004) widely used in the literature to bracket the uncertainties in the DM signal predictions. This is complementary to indirect constraints (diffuse radio and gamma-ray emissions) and has strong impact on DM searches. Indeed this makes the antiproton constraints more robust while enhancing the discovery/exclusion potential of current and future experiments, like AMS-02 and GAPS, especially in the antiproton and antideuteron channels.

Julien Lavalle; David Maurin; Antje Putze

2015-01-22T23:59:59.000Z

30

Global interpretation of direct Dark Matter searches after CDMS-II results  

SciTech Connect (OSTI)

We perform a global fit to data from Dark Matter (DM) direct detection experiments, including the recent CDMS-II results. We discuss possible interpretations of the DAMA annual modulation signal in terms of spin-independent and spin-dependent DM-nucleus interactions, both for elastic and inelastic scattering. We find that for the spin-dependent inelastic scattering off protons a good fit to all data is obtained. We present a simple toy model realizing such a scenario. In all the remaining cases the DAMA allowed regions are disfavored by other experiments or suffer from severe fine tuning of DM parameters with respect to the galactic escape velocity. Finally, we also entertain the possibility that the two events observed in CDMS-II are an actual signal of elastic DM scattering, and we compare the resulting CDMS-II allowed regions to the exclusion limits from other experiments.

Kopp, Joachim; Schwetz, Thomas; Zupan, Jure

2009-12-01T23:59:59.000Z

31

An Improved Multipyranometer Array for the Measurement of Direct and Diffuse Solar Radiation  

E-Print Network [OSTI]

array (MPA). The earliest work on an MPA related device for measuring diffuse sky radiation was performed in Finland by M. H2milllien et al. (1985). Further development on the MPA was performed in several countries including the United States where...

Munger, B.; Haberl, J. S.

1994-01-01T23:59:59.000Z

32

Assessment of SUNY Version 3 Global Horizontal and Direct Normal Solar Irradiance in Canada  

Science Journals Connector (OSTI)

In this paper, hourly, daily and annual solar resource data derived form the latest SUNY solar model (version 3) using visible and infrared satellite data is analysed and compared with ground measured solar data from eighteen northern- latitude locations distributed all across Canada. The statistics of spatial and temporal differences between the two datasets obtained from the two versions of SUNY model, i.e., V1 and V3, are analysed for both global horizontal irradiance (GHI) and direct normal irradiance (DNI). SUNY V3 GHI and DNI data set is also compared to a dataset produced by the MAC3 cloud layer model for ten northern-latitude locations across Canada. The MAC3 model, using ground-based data, is the basis of the weather design input data files referred to in the current Canadian Model National Energy Code. It is also the model used for generating the CWEEDS (Canadian Weather Energy and Engineering Data Sets) long term hourly dataset, which is in turn used to derive the CWEC files (Canadian Weather year for Energy Calculations) also called typical meteorological years. CWEC files are used for design and analysis in various applications, including buildings heating and cooling as well as solar systems. Overall, results show that SUNY V3 has improved slightly compared to SUNY V1 in terms of estimating global and beam irradiance. Comparison of the SUNY V3 beta model with the MAC3 model seems to indicate that SUNY V3 model is resulting in better DNI estimates than those derived by the MAC3 model. Both SUNY V3 and MAC 3 models give similar estimates for GHI.

Reda Djebbar; Robert Morris; Didier Thevenard; Richard Perez; James Schlemmer

2012-01-01T23:59:59.000Z

33

Exploiting simultaneous observational constraints on mass and absorption to estimate the global direct radiative forcing of black carbon and brown carbon  

E-Print Network [OSTI]

Atmospheric black carbon (BC) is a leading climate warming agent, yet uncertainties on the global direct radiative forcing (DRF) remain large. Here we expand a global model simulation (GEOS-Chem) of BC to include the ...

Schwarz, J. P.

34

Skill of Direct Solar Radiation Predicted by the ECMWF Global Atmospheric Model over Australia  

Science Journals Connector (OSTI)

Prediction of direct solar radiation is key in sectors such as solar power and agriculture; for instance, it can enable more efficient production of energy from concentrating solar power plants. An assessment of the quality of the direct solar ...

Alberto Troccoli; Jean-Jacques Morcrette

2014-11-01T23:59:59.000Z

35

Recent oppositely directed trends in solar climate forcings and the global mean surface air temperature  

Science Journals Connector (OSTI)

...102 and 108 years. Recently, solar effects on climate on time scales...becoming feasible to detect genuine solar forcing in climate records (Haigh 2003). The thermal capacity of the Earth's oceans is large...decadal-scale (and hence solar cycle) variations in global...

2007-01-01T23:59:59.000Z

36

GLOBAL WELL-POSEDNESS OF THE 3D PRIMITIVE EQUATIONS WITH PARTIAL VERTICAL TURBULENCE MIXING HEAT DIFFUSION  

E-Print Network [OSTI]

the assumption of hydro- static balance, govern the large scale dynamics of atmospheric and oceanic motion heat diffusivity is usually added as a leading order approximation to the effect of micro

37

Strategic sourcing in a direct import supply chain with increasing globalization trends while mitigating risk  

E-Print Network [OSTI]

This thesis explores how a retailer should determine whether to source goods domestically vs. directly by imports through international sourcing. Through the research a landed cost model was developed and designed to ...

Scipio, Sophia E. (Sophia Elyssia)

2013-01-01T23:59:59.000Z

38

Heterogeneous mixtures of elliptical particles: Directly resolving local and global properties and responses  

Science Journals Connector (OSTI)

In our earlier papers, Prosperetti's seminal Physalis method for fluid flows was extended to directly resolve electric fields in finite-sized particles and to investigate accurately the mutual fluid-particle, particle-particle, and particle-boundary ... Keywords: Directly resolving particles, Discontinuous interface condition, Elliptical particles, Elongated rod-like particle, Force and torque on particles, Heterogeneous functional materials, Interactions, Local charge distribution, Orientation and anisotropy, Singularity in elliptic coordinates

Qianlong Liu; Kenneth L. Reifsnider

2013-02-01T23:59:59.000Z

39

Maskless direct laser writing with visible light: Breaking through the optical resolving limit with cooperative manipulations of nonlinear reverse saturation absorption and thermal diffusion  

SciTech Connect (OSTI)

In this work, the resolving limit of maskless direct laser writing is overcome by cooperative manipulation from nonlinear reverse saturation absorption and thermal diffusion, where the nonlinear reverse saturation absorption can induce the formation of below diffraction-limited energy absorption spot, and the thermal diffusion manipulation can make the heat quantity at the central region of energy absorption spot propagate along the thin film thickness direction. The temperature at the central region of energy absorption spot transiently reaches up to melting point and realizes nanolithography. The sample “glass substrate/AgInSbTe” is prepared, where AgInSbTe is taken as nonlinear reverse saturation absorption thin film. The below diffraction-limited energy absorption spot is simulated theoretically and verified experimentally by near-field spot scanning method. The “glass substrate/Al/AgInSbTe” sample is prepared, where the Al is used as thermal conductive layer to manipulate the thermal diffusion channel because the thermal diffusivity coefficient of Al is much larger than that of AgInSbTe. The direct laser writing is conducted by a setup with a laser wavelength of 650?nm and a converging lens of NA=0.85, the lithographic marks with a size of about 100?nm are obtained, and the size is only about 1/10 the incident focused spot. The experimental results indicate that the cooperative manipulation from nonlinear reverse saturation absorption and thermal diffusion is a good method to realize nanolithography in maskless direct laser writing with visible light.

Wei, Jingsong, E-mail: weijingsong@siom.ac.cn [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China); Wang, Rui [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China); University of Chinese Academy of Sciences, Beijing 100049 (China)

2014-03-28T23:59:59.000Z

40

A NEW HIGH FREQUENCY GLOBAL-TO-DIRECT IRRADIANCE CONVERSION METHODOLOGY  

E-Print Network [OSTI]

, Navarra (Spain) Abstract In order to accurately simulate the behavior of a solar thermal power plant will improve results of solar thermal power plants simulations. Keywords: Direct Normal Irradiance (DNI by knowing this information with accuracy, it will be possible to predict the solar thermal power plant

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "global direct diffuse" 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

Direct Insertion of MODIS Radiances in a Global Aerosol Transport Model CLARK WEAVER,* ARLINDO DA SILVA, MIAN CHIN,# PAUL GINOUX,@ OLEG DUBOVIK,&,@@  

E-Print Network [OSTI]

is directly inserted into the Goddard Chemistry and Aerosol Radiation Transport model (GOCART), which aerosol radiative forcing in the thermody- namic equation of GCMs, 3) to account for the reduc- tionDirect Insertion of MODIS Radiances in a Global Aerosol Transport Model CLARK WEAVER,* ARLINDO DA

Chin, Mian

42

Direct  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

interactions, and the pollutant emission is hence directly proportional to the bulk neutral density. Simultaneously monitoring the total emission at 1040 nm and the...

43

Simple solar spectral model for direct and diffuse irradiance on horizontal and tilted planes at the earth's surface for cloudless atmospheres  

SciTech Connect (OSTI)

A new, simple model for calculating clear-sky direct and diffuse spectral irradiance on horizontal and tilted surfaces is presented. The model is based on previously reported simple algorithms and on comparisons with rigorous radiative transfer calculations and limited outdoor measurements. Equations for direct normal irradiance are outlined; and include: Raleigh scattering; aerosol scattering and absorption; water vapor absorption; and ozone and uniformly mixed gas absorption. Inputs to the model include solar zenith angle, collector tilt angle, atmospheric turbidity, amount of ozone and precipitable water vapor, surface pressure, and ground albedo. The model calculates terrestrial spectra from 0.3 to 4.0 ..mu..m with approximately 10 nm resolution. A major goal of this work is to provide researchers with the capability to calculate spectral irradiance for different atmospheric conditions and different collector geometries using microcomputers. A listing of the computer program is provided.

Bird, R.; Riordan, C.

1984-12-01T23:59:59.000Z

44

Testing WIMS-D4M cross sections and the ANL ENDF/B-V 69 group library. Results from global diffusion and Monte Carlo calculations compared with measurements in the Romanian 14-MW TRIGA reactor  

SciTech Connect (OSTI)

The WIMS-D4 code has been modified (WIMS-D4M) to produce microscopic isotopic cross sections in ISOTXS format for use in diffusion and transport calculations. Beginning with 69-group libraries based on ENDF/B-V data, numerous cell calculations have been made to prepare a set of broad group cross sections for use in diffusion calculations. Global calculations have been made for two control rod states of the Romanian steady state TRIGA reactor with 29 fresh HEU fuel clusters. Detailed Monte Carlo calculations also have been performed for the same reactor configurations using data based on ENDF/B-V. Results from these global calculations are compared with each other and with the measured excess reactivities. Although region-averaged macroscopic principal cross sections obtained from WIMS-D4M are in good agreement with the corresponding Monte Carlo values, problems exist with the high energy (E > 10 keV) microscopic hydrogen transport cross sections.

Bretscher, M.M.

1993-12-31T23:59:59.000Z

45

Global Climate Data  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Data Data The climate data at the ORNL DAAC are used primarily as driving variables in terrestrial biogeochemistry models. These models typically use data on temperature (min,max), precipitation, humidity (relative humidity, vapor pressure deficit, dew point), radiation (PFD in PAR, shortwave, direct/diffuse, and UV radiation, daylength), and wind velocity. Climate / meteorology data are required at hourly to monthly time scales, either point or gridded, at spatial scales ranging from regional to continental to global. The ORNL DAAC currently distributes climate data from several related projects: VEMAP-1 Hydroclimatology, and Global Historical Climatology Network. We are also now distributing climate data developed at the East Anglia Climate Research Unit and the Potsdam Institute for Climate Research.

46

Nonnegative Diffusion Orientation Distribution Function  

Science Journals Connector (OSTI)

Because of the well-known limitations of diffusion tensor imaging (DTI) in regions of low anisotropy and multiple fiber crossing, high angular resolution diffusion imaging (HARDI) and Q-Ball Imaging (QBI) are used to estimate the probability density ... Keywords: High angular resolution diffusion imaging (HARDI), Higher order diffusion tensor, Nonnegativity, Orientation distribution function (ODF), Principal direction

Liqun Qi; Gaohang Yu; Yi Xu

2013-02-01T23:59:59.000Z

47

Mapping the global digital divide  

Science Journals Connector (OSTI)

The global digital divide as a concept is intuitively understood by most academicians, politicians and public policy makers. However, to date little empirical work exists to explain differences in per country access to information and communication technologies (ICTs). The research that does exist places heavy influence on the impact of country wealth, as measured by gross domestic product (GDP) per capita, on the diffusion of ICTs. While GDP per capita certainly influences the diffusion of ICTs within a country, it is not the sole determinant of a country's location versus other countries vis-a-vis the global digital divide. To investigate and map the global digital divide, as it currently exists, the authors utilise model-based cluster analysis to determine cohorts of countries based on three variables: personal computers per 100 population, internet users per 100 population and internet bandwidth per person. The results indicate that the global digital divide consists of four tiers. And although all of the developed countries are included in the first tier, some surprising results are obtained. Implications of the results are discussed and directions for future research are provided.

D. Steven White; Angappa Gunasekaran; Timothy P. Shea; Godwin C. Ariguzo

2011-01-01T23:59:59.000Z

48

Light diffusing fiber optic chamber  

DOE Patents [OSTI]

A light diffusion system for transmitting light to a target area. The light is transmitted in a direction from a proximal end to a distal end by an optical fiber. A diffusing chamber is operatively connected to the optical fiber for transmitting the light from the proximal end to the distal end and transmitting said light to said target area. A plug is operatively connected to the diffusing chamber for increasing the light that is transmitted to the target area.

Maitland, Duncan J. (Lafayette, CA)

2002-01-01T23:59:59.000Z

49

Global Structure of a Three-Way Junction in a Phi29 Packaging RNA Dimer Determined Using Site-Directed Spin Labeling  

SciTech Connect (OSTI)

The condensation of bacteriophage phi29 genomic DNA into its preformed procapsid requires the DNA packaging motor, which is the strongest known biological motor. The packaging motor is an intricate ring-shaped protein/RNA complex, and its function requires an RNA component called packaging RNA (pRNA). Current structural information on pRNA is limited, which hinders studies of motor function. Here, we used site-directed spin labeling to map the conformation of a pRNA three-way junction that bridges binding sites for the motor ATPase and the procapsid. The studies were carried out on a pRNA dimer, which is the simplest ring-shaped pRNA complex and serves as a functional intermediate during motor assembly. Using a nucleotide-independent labeling scheme, stable nitroxide radicals were attached to eight specific pRNA sites without perturbing RNA folding and dimer formation, and a total of 17 internitroxide distances spanning the three-way junction were measured using Double Electron-Electron Resonance spectroscopy. The measured distances, together with steric chemical constraints, were used to select 3662 viable three-way junction models from a pool of 65 billion. The results reveal a similar conformation among the viable models, with two of the helices (HT and HL) adopting an acute bend. This is in contrast to a recently reported pRNA tetramer crystal structure, in which HT and HL stack onto each other linearly. The studies establish a new method for mapping global structures of complex RNA molecules, and provide information on pRNA conformation that aids investigations of phi29 packaging motor and developments of pRNA-based nanomedicine and nanomaterial.

Zhang, Xiaojun; Tung, Chang-Shung; Sowa, Glenna; Hatmal, Ma'mon M.; Haworth, Ian S.; Qin, Peter Z.

2012-02-08T23:59:59.000Z

50

Sensitivity of climate change to diapycnal diffusivity in the ocean  

E-Print Network [OSTI]

The diapycnal diffusivity of the ocean is one of the least known parameters in cur- rent climate models. Measurements of this diffusivity are sparse and insufficient for compiling a global map. Inferences from inverse ...

Dalan, Fabio, 1975-

2003-01-01T23:59:59.000Z

51

Diffuse Irradiance Study Planned for October  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

installed at the SGP CART site near Lamont, Oklahoma. The instruments measuring diffuse solar radiation have black sphere-shaped shades to keep direct sunlight from reaching the...

52

Diffuse Scattering  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diffuse Scattering Diffuse Scattering * Anticipatory (trick) question: If you have an x-ray or neutron detector looking at a small sample volume, which will scatter more x- rays or neutrons into the detector 1 atom 100 atoms or 1000 atoms? X-ray or neutron beam Answer: Depends! Diffuse Scattering Gene E. Ice Materials Science and Technology Division Oak Ridge National Laboratory, USA National School on Neutron and X-ray Scattering ORNL/SNS June 2011 Presentation concentrates year graduate-level course into 1 hour * Skip mathematical complexities * Expose to range of applications * Develop intuition for length scales * Talk like x-ray/neutron scattering guru - Reciprocal space - Debye Temperature - Laue monotonic - Krivoglaz defects of 1st/2nd kinds! Great for cocktail parties or impressing attractive strangers-

53

Optical imaging of phantoms from real data by an approximately globally convergent inverse algorithm  

E-Print Network [OSTI]

A numerical method for an inverse problem for an elliptic equation with the running source at multiple positions is presented. This algorithm does not rely on a good first guess for the solution. The so-called "approximate global convergence" property of this method is shown here. The performance of the algorithm is verified on real data for Diffusion Optical Tomography. Direct applications are in near-infrared laser imaging technology for stroke detection in brains of small animals.

Jianzhong Su; Michael V. Klibanov; Yueming Liu; Zhijin Lin; Natee Pantong; Hanli Liu

2012-08-25T23:59:59.000Z

54

Global Security  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Applications Global Security science-innovationassetsimagesicon-science.jpg Global Security National security depends on science and technology. The United States relies on...

55

Diffusion of Ca and Mg in Calcite  

SciTech Connect (OSTI)

The self-diffusion of Ca and the tracer diffusion of Mg in calcite have been experimentally measured using isotopic tracers of {sup 25}Mg and {sup 44}Ca. Natural single crystals of calcite were coated with a thermally-sputtered oxide thin film and then annealed in a CO{sub 2} gas at one atmosphere total pressure and temperatures from 550 to 800 C. Diffusion coefficient values were derived from the depth profiles obtained by ion microprobe analysis. The resultant activation energies for Mg tracer diffusion and Ca self-diffusion are respectively: E{sub a}(Mg) = 284 {+-} 74 kJ/mol and E{sub a}(Ca) = 271 {+-} 80 kJ/mol. For the temperature ranges in these experiments, the diffusion of Mg is faster than Ca. The results are generally consistent in magnitude with divalent cation diffusion rates obtained in previous studies and provide a means of interpreting the thermal histories of carbonate minerals, the mechanism of dolomitization, and other diffusion-controlled processes. The results indicate that cation diffusion in calcite is relatively slow and cations are the rate-limiting diffusing species for the deformation of calcite and carbonate rocks. Application of the calcite-dolomite geothermometer to metamorphic assemblages will be constrained by cation diffusion and cooling rates. The direct measurement of Mg tracer diffusion in calcite indicates that dolomitization is unlikely to be accomplished by Mg diffusion in the solid state but by a recrystallization process.

Cygan, R.T.; Fisler, D.K.

1999-02-10T23:59:59.000Z

56

An asixymmetric diffusion experiment for the determination of diffusion and sorption coefficients of rock samples  

SciTech Connect (OSTI)

Diffusion anisotropy is a critical property in predicting migration of substances in sedimentary formations with very low permeability. The diffusion anisotropy of sedimentary rocks has been evaluated mainly from laboratory diffusion experiments, in which the directional diffusivities are separately estimated by through-diffusion experiments using different rock samples, or concurrently by in-diffusion experiments in which only the tracer profile in a rock block is measured. To estimate the diffusion anisotropy from a single rock sample, this study proposes an axisymmetric diffusion test, in which tracer diffuses between a cylindrical rock sample and a surrounding solution reservoir. The tracer diffusion between the sample and reservoir can be monitored from the reservoir tracer concentrations, and the tracer profile could also be obtained after dismantling the sample. Semi-analytical solutions are derived for tracer concentrations in both the reservoir and sample, accounting for an anisotropic diffusion tensor of rank two as well as the dilution effects from sampling and replacement of reservoir solution. The transient and steady-state analyses were examined experimentally and numerically for different experimental configurations, but without the need for tracer profiling. These experimental configurations are tested for in- and out-diffusion experiments using Koetoi and Wakkanai mudstones and Shirahama sandstone, and are scrutinized by a numerical approach to identify favorable conditions for parameter estimation. The analysis reveals the difficulty in estimating diffusion anisotropy; test configurations are proposed for enhanced identifiability of diffusion anisotropy. Moreover, it is demonstrated that the axisymmetric diffusion test is efficient in obtaining the sorption parameter from both steady-state and transient data, and in determining the effective diffusion coefficient if isotropic diffusion is assumed. Moreover, measuring reservoir concentrations in an axisymmetric diffusion experiment coupled with tracer profiling may be a promising approach to estimate of diffusion anisotropy of sedimentary rocks.

Takeda, M.; Hiratsuka, T.; Ito, K.; Finsterle, S.

2011-02-01T23:59:59.000Z

57

Copper diffusion in single-crystal ?-Zr  

Science Journals Connector (OSTI)

Tracer diffusion of Cu64 in ?-Zr single crystals has been measured in the temperature range (615-860)°C. The temperature dependences of the Cu64 diffusion coefficients in directions parallel to and perpendicular to the c axis are given by D?=0.40e-1.54 eVkT and D?=0.25e-1.60 eVkT cm2/sec, respectively. The results are discussed in terms of an interstitial diffusion mechanism.

G. M. Hood and R. J. Schultz

1975-05-15T23:59:59.000Z

58

Reflected Knowledge and Trust in Global Collaboration  

Science Journals Connector (OSTI)

Scholars argue that direct knowledge about distant colleagues is crucial for fostering trust in global collaboration. However, their arguments focus mainly on how trust accrues from knowledge about distant collaborators' personal characteristics, relationships, ... Keywords: behavior, global work, organizational studies, trust

Mark Mortensen; Tsedal B. Neeley

2012-12-01T23:59:59.000Z

59

Patterns in Global Hydrothermal  

E-Print Network [OSTI]

Patterns in Global Hydrothermal Activity noaa ocean exploration Presenter: Edward T. Baker #12) High-T vents High = hydrothermal discharge Low = active or inactive discharge sites B. Davy, GNS NZ #12 Lc(km) #12;Future Directions Quantify processes: ·Employ or develop new technologies (AUVs, solid

60

Global Security  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

nonpartisan organization with a mission to strengthen global security by reducing the risk of use and preventing the spread of nuclear, biological, and chemical weapons and to...

Note: This page contains sample records for the topic "global direct diffuse" 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

Handbook on atmospheric diffusion  

SciTech Connect (OSTI)

Basic meteorological concepts are covered as well as plume rise, source effects, and diffusion models. Chapters are included on cooling tower plumes and urban diffusion. Suggestions are given for calculating diffusion in special situations, such as for instantaneous releases over complex terrain, over long distances, and during times when chemical reactions or dry or wet deposition are important. (PSB)

Hanna, S.R.; Briggs, G.A.; Hosker, R.P. Jr.

1982-01-01T23:59:59.000Z

62

ASYMMETRIC DIFFUSION OF MAGNETIC FIELD LINES  

SciTech Connect (OSTI)

Stochasticity of magnetic field lines is important for particle transport properties. Magnetic field lines separate faster than diffusively in turbulent plasma, which is called superdiffusion. We discovered that this superdiffusion is pronouncedly asymmetric, so that the separation of field lines along the magnetic field direction is different from the separation in the opposite direction. While the symmetry of the flow is broken by the so-called imbalance or cross-helicity, the difference between forward and backward diffusion is not directly due to imbalance, but a non-trivial consequence of both imbalance and non-reversibility of turbulence. The asymmetric diffusion perpendicular to the mean magnetic field entails a variety of new physical phenomena, such as the production of parallel particle streaming in the presence of perpendicular particle gradients. Such streaming and associated instabilities could be significant for particle transport in laboratory, space, and astrophysical plasmas.

Beresnyak, Andrey [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2013-04-20T23:59:59.000Z

63

Lattice Boltzmann modeling of multicomponent diffusion in narrow channels  

Science Journals Connector (OSTI)

We investigate lattice Boltzmann (LB) modeling of multicomponent diffusion for finite Knudsen numbers. Analytic solutions for binary diffusion in narrow channels, where both molecular and Knudsen diffusion are of importance, are obtained for the standard and higher-order LB methods and validated against the results from the direct simulation Monte Carlo (DSMC) method. The LB methods are shown to reproduce the diffusion slip phenomena. In the DSMC method, while fluid particles are diffusely reflected on a wall, significant component slip and a kinetic boundary layer are observed. It is shown that a higher-order LB method accurately captures the characteristics observed in the DSMC method.

Seung Hyun Kim; Heinz Pitsch; Iain D. Boyd

2009-01-08T23:59:59.000Z

64

Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...  

Broader source: Energy.gov (indexed) [DOE]

in Gasoline Turbocharged Direct Injection (GTDI) engine technology in the near term as a cost effective, high volume, fuel economy solution, marketed globally as EcoBoost...

65

Global Paradox  

Science Journals Connector (OSTI)

From the Publisher:In the tradition of his bestselling Megatrends books, John Naisbitt explores the new wave of global economic change predicted as a result of the breaking apart of the Soviet empire--and the opportunities and challenges for nations, ...

John Naisbitt

1994-12-01T23:59:59.000Z

66

Integrated global background monitoring network  

SciTech Connect (OSTI)

This paper describes the background and elucidates the need for an integrated global background monitoring network. This network should: establish reference levels for pollutants that have potential for global contaminatin, serve as an early warning site for detecting global spread of pollutants, and establish baseline levels for selected ecosystem parameters against which data from more impacted areas can be compared. This paper proposes the following: (1) establish an integrated global background monitoring network for pollutants and ecosystem parameters; (2) pollutant measurements be multi-media; (3) carry out ecosystem parameter studies in conjunction with pollutant measurements; (4) the network be maintained for an indefinite period of time; (5) the network be established using the international biosphere reserve system as the universe from which a subset of monitoring sites are drawn; and (6) that the project be under the overall direction of the Global Environmental Monitoring System. 43 references, 1 figure, 1 table.

Wiersma, G.B.

1984-08-01T23:59:59.000Z

67

Global Health Research | 2 Global Health Research  

E-Print Network [OSTI]

Global Health Research | 2 Global Health Research Supporting researchers in low- and middle-income countries to carry out health- related research within their own countries. Gl bal Health #12;3 | Global Health Research #12;Global Health Research | 4 We are a global charitable foundation dedicated

Rambaut, Andrew

68

Global Predictions  

E-Print Network [OSTI]

created every day by the lab and used by the forest service, county commissioners and others. Using computer technology and satellites, the lab currently focuses on three core spatial technologies? GIS, global positioning systems (GPS) and remote...,? said Srinivasan. The lab also uses GPS, a satellite navigation system useful for surveying property boundaries and fields. GPS uses satellites to locate and track any feature on Earth at any given time. The lab is using GPS in identifying the Corps...

Swyden, Courtney

2006-01-01T23:59:59.000Z

69

ARM - Field Campaign - Diffuse Shortwave IOP  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsDiffuse Shortwave IOP govCampaignsDiffuse Shortwave IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Diffuse Shortwave IOP 2001.09.24 - 2001.10.22 Lead Scientist : Joseph Michalsky Data Availability Data will not be available for public viewing until April 8, 2002. All data will be archived at the diffuse IOP web site by that date. For data sets, see below. Summary Almost 4 weeks of data were acquired under mostly sunny skies. Ninety-two percent of the daylight hours had measureable direct beam radiation. Much of the sunny data included completely cloud free conditions. The trackers functioned perfectly. Clear-sky data included low to moderate aerosol cases with no high aerosol conditions sampled. Data recovery from the

70

Review: Global Climate Change  

E-Print Network [OSTI]

introduction to global climate change, the greenhouseReview: Global Climate Change: A Primer By Orrin H PilkeyPilkey, Keith C. Global Climate Change: a primer. Durham,

Smith, Jennifer

2013-01-01T23:59:59.000Z

71

ARM - Measurement - Shortwave broadband diffuse downwelling irradiance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

diffuse downwelling irradiance diffuse downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband diffuse downwelling irradiance All of the solar radiation, across the wavelength range of 0.4 and 4 {mu}m, coming directly from the sky except for solar radiation coming directly from the sun and the circumsolar irradiance within approximately three degrees of the sun. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments

72

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.

73

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

74

Ambipolar Diffusion in a Magnetic Field  

Science Journals Connector (OSTI)

Diffusion of ions in a plasma across a magnetic field is shown to be not ambipolar in character in most arc experiments. Owing to the highly anisotropic conductivity of the medium, the ions diffuse across the field at their own intrinsic rate. Space-charge neutralization is maintained by slight adjustments of the currents in the direction of the magnetic field lines. The discrepancy between theory and experiment noted by Bohm is thus resolved and no additional mechanisms, such as plasma oscillations, need be postulated.

Albert Simon

1955-04-15T23:59:59.000Z

75

Narrow groove welding gas diffuser assembly and welding torch  

DOE Patents [OSTI]

A diffuser assembly is provided for narrow groove welding using an automatic gas tungsten arc welding torch. The diffuser assembly includes a manifold adapted for adjustable mounting on the welding torch which is received in a central opening in the manifold. Laterally extending manifold sections communicate with a shield gas inlet such that shield gas supplied to the inlet passes to gas passages of the manifold sections. First and second tapered diffusers are respectively connected to the manifold sections in fluid communication with the gas passages thereof. The diffusers extend downwardly along the torch electrode on opposite sides thereof so as to release shield gas along the length of the electrode and at the distal tip of the electrode. The diffusers are of a transverse width which is on the order of the thickness of the electrode so that the diffusers can, in use, be inserted into a narrow welding groove before and after the electrode in the direction of the weld operation.

Rooney, Stephen J. (East Berne, NY)

2001-01-01T23:59:59.000Z

76

Technology Diffusion and Development  

Science Journals Connector (OSTI)

This chapter discusses the technology diffusion and development that play a key role in climate change mitigation. Most of the authors are engineers with long business experience in this field. In Sect. 9.1, t...

Teruo Okazaki; Mitsutsune Yamaguchi; Hiroyuki Watanabe…

2012-01-01T23:59:59.000Z

77

Zero-flux planes, flux reversals and diffusion paths in ternary and quaternary diffusion  

SciTech Connect (OSTI)

During isothermal multicomponent diffusion, interdiffusion fluxes of individual components can go to zero at zero-flux planes (ZFP) and exhibit flux reversals from one side to the other of such planes. Interdiffusion fluxes as well as the locations and compositions of ZFPs for components are determined directly from the concentration profiles of diffusion couples without the need for prior knowledge of interdiffusion coefficients. The development and identification of ZFPs is reviewed with the aid of single phase and two-phase diffusion couples investigated in the Cu-Ni-Zn system at 775/sup 0/C. ZFP locations in the diffusion zone nearly correspond to sections where the activity of a component is the same as its activity in either of the terminal alloys of a couple. Path slopes at ZFPs are uniquely dictated by the atomic mobility and thermodynamic data for the components. Discontinuous flux reversals for the components can also occur at interfaces in multiphase couples. Identification of ZFPs is also presented for diffusion in the Cu-Ni-Zn-Mn quaternary system. Analytical representation of diffusion paths for both ternary and quaternary diffusion couples is presented with the aid of characteristic path parameters.

Dayananda, M.A.

1986-05-23T23:59:59.000Z

78

Glass diffusion source for constraining BSF region of a solar cell  

DOE Patents [OSTI]

The present invention is directed to a method of fabricating a solar cell comprising simultaneous diffusion of the p and n dopant materials into the solar cell substrate. The simultaneous diffusion process is preceded by deposition of a capping layer impervious to doping by thermal diffusion processes.

Lesk, I.A.; Pryor, R.A.; Coleman, M.G.

1982-08-27T23:59:59.000Z

79

Experimental investigation of the performance of a diffuser-augmented vertical axis wind turbine  

E-Print Network [OSTI]

Experimental investigation of the performance of a diffuser- augmented vertical axis wind turbine Experimental investigation of the performance of a diffuser-augmented vertical axis wind turbine by Arash The performance of a vertical axis wind turbine with and without a diffuser was studied using direct force

Victoria, University of

80

hal-00159728,version1-3Jul2007 Filtering the Wright-Fisher diffusion.  

E-Print Network [OSTI]

hal-00159728,version1-3Jul2007 Filtering the Wright-Fisher diffusion. MIREILLE CHALEYAT-MAUREL1 Abstract We consider a Wright-Fisher diffusion (x(t)) whose current state cannot be observed directly. Running title: Wright-Fisher diffusion. #12;1 Introduction Consider a large population composed of two

Boyer, Edmond

Note: This page contains sample records for the topic "global direct diffuse" 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

Global existence of reaction-diffusion equations over multiple domains  

E-Print Network [OSTI]

)=(uk(t, x))mk=1 is an unknown vector valued function and each u0k is zero outside ??(k), D = diag(dk)is an m Ã? m positive de?nite diagonal matrix, f : R Ã? RnÃ? Rm ? Rm, u0 is a componentwise nonnegative function, and each ?i...

Ryan, John Maurice-Car

2006-04-12T23:59:59.000Z

82

Diffusion Maps for Changing Data Diffusion Maps for Changing Data  

E-Print Network [OSTI]

Diffusion Maps for Changing Data Diffusion Maps for Changing Data Matthew J. Hirn Department;Diffusion Maps for Changing Data Collaborators Ronald Coifman (Yale University) Roy Lederman (Yale University) #12;Diffusion Maps for Changing Data How to compare images across sensors? Figure: Sokolov Mine

Hirn, Matthew

83

Diffusion Maps for Changing Data Diffusion Maps for Changing Data  

E-Print Network [OSTI]

Diffusion Maps for Changing Data Diffusion Maps for Changing Data Matthew J. Hirn Department of Mathematics Yale University July 26, 2012 Bell Labs #12;Diffusion Maps for Changing Data Collaborators Joint work with Ronald Coifman and Roy Lederman. #12;Diffusion Maps for Changing Data Overview 1 High

Hirn, Matthew

84

Diffusion Maps for Changing Data Diffusion Maps for Changing Data  

E-Print Network [OSTI]

Diffusion Maps for Changing Data Diffusion Maps for Changing Data Matthew J. Hirn Department of Mathematics Yale University November 29, 2012 Kansas State University Colloquium #12;Diffusion Maps;Diffusion Maps for Changing Data How to compare images across sensors? Figure: Sokolov Mine in 2009 and 2010

Hirn, Matthew

85

Diffusion Maps for Changing Data Diffusion Maps for Changing Data  

E-Print Network [OSTI]

Diffusion Maps for Changing Data Diffusion Maps for Changing Data Matthew J. Hirn Department in Honor of the 70th Birthday of David R. Larson #12;Diffusion Maps for Changing Data Collaborators Joint work with Ronald Coifman and Roy Lederman. #12;Diffusion Maps for Changing Data High Dimensional Data

Hirn, Matthew

86

Diffusion Maps for Changing Data Diffusion Maps for Changing Data  

E-Print Network [OSTI]

Diffusion Maps for Changing Data Diffusion Maps for Changing Data Matthew J. Hirn September 3, 2013 #12;Diffusion Maps for Changing Data Collaborators Simon Adar, Tel Aviv University Eyal Ben Dor, Tel, Clarkson University Yoel Shkolnisky, Tel Aviv University #12;Diffusion Maps for Changing Data Heat equation

Hirn, Matthew

87

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

88

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

89

ARM - Measurement - Shortwave spectral diffuse downwelling irradiance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

diffuse downwelling irradiance diffuse downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave spectral diffuse downwelling irradiance The rate at which spectrally resolved radiant energy at wavelengths shorter than approximately 4 {mu}m, that has been scattered in the atmosphere at least once, passes through a horizontal unit area in a downward direction. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments RSS : Rotating Shadowband Spectroradiometer

90

Anomalous diffusion modifies solar neutrino fluxes  

E-Print Network [OSTI]

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: diffusion and friction coefficients are energy dependent, collisions are not two-body processes and retain memory beyond the single scattering event. A direct consequence of nonstandard diffusion is that the equilibrium energy distribution of particles departs from the Maxwellian one (tails goes to zero more slowly or faster than exponentially) modifying the reaction rates. This effect is qualitatively different from temperature and/or composition modification: small changes in the number of particles in the distribution tails can strongly modify the rates without affecting bulk properties, such as the sound speed or hydrostatic equilibrium, which depend on the mean values from the distribution. This mechanism can considerably increase the range of predictions for the neutrino fluxes allowed by the current experimental values (cross sections and solar properties) and can be u...

Kaniadakis, G; Lissia, M; Quarati, P

1998-01-01T23:59:59.000Z

91

Single molecule tracking of heterogeneous diffusion  

Science Journals Connector (OSTI)

The mean square displacement of heterogeneous diffusion obeys the Einstein relation, thereby showing no sign of heterogeneities in the ensemble measurement of the diffusion constant. The signature of spatial heterogeneities appears in the time evolution of the non-Gaussian distribution and in the cross correlation between the square displacements at different times, both available from single molecule diffusional trajectories. As a quantitative measure, the non-Gaussian indicator g(t) decays asymptotically to zero according to 1/t for finite time correlation, but saturates at a plateau value for power-law correlation. In addition, the joint moment correlation function f(t,?) provides a direct probe of the memory effect of the fluctuating rate constant. A two-state diffusion model and a stochastic Gaussian model are constructed to evaluate these quantities and are shown to yield the same result within the second cumulant expansion.

Jianshu Cao

2001-03-16T23:59:59.000Z

92

Diffusive magnetic images of upwelling patterns in the core Peter Olson, Ikuro Sumita,1  

E-Print Network [OSTI]

the magnetic field, including stretching of the field lines by the fluid and magnetic diffusion. [3] Since field electrodynamics. The method assumes a frozen magnetic flux balance for the global-scale part of the fluid velocity. The diffusive flux balance implies that local highs and lows in the magnetic field

93

Global Health Leadership and Management  

Science Journals Connector (OSTI)

...obvious and do not build particularly well on Foege's excellent foundation — perhaps understandably, because this book charts truly new territory. It must have been difficult to organize such an army of prominent explorers and to keep them marching in the same direction. Editing the book must have been... It is a welcome breath of fresh air to read William H. Foege's preface to Global Health Leadership and Management. He zeroes in on the looming crisis in global public health with a tiger's instinct for the jugular vein. Bridging the huge gap between the ...

MacWilliams K.E.

2005-12-29T23:59:59.000Z

94

Oxygen diffusion in titanite: Lattice diffusion and fast-path diffusion in single crystals  

E-Print Network [OSTI]

Oxygen diffusion in titanite: Lattice diffusion and fast-path diffusion in single crystals X June 2006 Editor: P. Deines Abstract Oxygen diffusion in natural and synthetic single-crystal titanite was characterized under both dry and water-present conditions. For the dry experiments, pre-polished titanite

Watson, E. Bruce

95

Building | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Scientists at GE Global Research get into the holiday spirit by bringing high-tech additive manufacturing techniques to Christmas... Read More Global Research and GE...

96

Timeline | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Research Over Time From our earliest days, we've been changing the landscape in commercial science and technology. Explore our inventions' evolution. Home > Global Research...

97

PNNL: Atmospheric Sciences & Global Change - Frontiers in Global Change  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Frontiers in Global Change Frontiers in Global Change Dr. Thanos Nenes Dr. Thanos Nenes Aerosol-Cloud Interactions: The Elusive Component of Climate Change Dr. Thanos Nenes Professor & Georgia Power Faculty Scholar, School of Earth & Atmospheric Sciences, School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA Thursday, August 1, 2013 EMSL Auditorium 10:00AM The effect of human activities on climate is one of the most important issues facing society. Humans influence climate in many ways. Emissions of greenhouse gases (GHGs) tend to warm climate, by reducing the amount of infrared radiation that is emitted to space. Increased levels of suspended atmospheric particles ("aerosols") exert a net cooling effect by directly scattering and absorption of solar radiation (the "aerosol direct climatic

98

Constraining global isoprene emissions with Global Ozone Monitoring Experiment (GOME) formaldehyde column measurements  

E-Print Network [OSTI]

Constraining global isoprene emissions with Global Ozone Monitoring Experiment (GOME) formaldehyde emission estimates are highly uncertain because of a lack of direct observations. Formaldehyde (HCHO the observation of this trace gas to help constrain isoprene emissions. We use HCHO column observations from

Chance, Kelly

99

Self- and zinc diffusion in gallium antimonide  

SciTech Connect (OSTI)

The technological age has in large part been driven by the applications of semiconductors, and most notably by silicon. Our lives have been thoroughly changed by devices using the broad range of semiconductor technology developed over the past forty years. Much of the technological development has its foundation in research carried out on the different semiconductors whose properties can be exploited to make transistors, lasers, and many other devices. While the technological focus has largely been on silicon, many other semiconductor systems have applications in industry and offer formidable academic challenges. Diffusion studies belong to the most basic studies in semiconductors, important from both an application as well as research standpoint. Diffusion processes govern the junctions formed for device applications. As the device dimensions are decreased and the dopant concentrations increased, keeping pace with Moore's Law, a deeper understanding of diffusion is necessary to establish and maintain the sharp dopant profiles engineered for optimal device performance. From an academic viewpoint, diffusion in semiconductors allows for the study of point defects. Very few techniques exist which allow for the extraction of as much information of their properties. This study focuses on diffusion in the semiconductor gallium antimonide (GaSb). As will become clear, this compound semiconductor proves to be a powerful one for investigating both self- and foreign atom diffusion. While the results have direct applications for work on GaSb devices, the results should also be taken in the broader context of III-V semiconductors. Results here can be compared and contrasted to results in systems such as GaAs and even GaN, indicating trends within this common group of semiconductors. The results also have direct importance for ternary and quaternary semiconductor systems used in devices such as high speed InP/GaAsSb/InP double heterojunction bipolar transistors (DHBT) [Dvorak, (2001)]. Many of the findings which will be reported here were previously published in three journal articles. Hartmut Bracht was the lead author on two articles on self-diffusion studies in GaSb [Bracht, (2001), (2000)], while this report's author was the lead author on Zn diffusion results [Nicols, (2001)]. Much of the information contained herein can be found in those articles, but a more detailed treatment is presented here.

Nicols, Samuel Piers

2002-03-26T23:59:59.000Z

100

Making Global Illumination User Friendly  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Making Global Illumination User Friendly Making Global Illumination User Friendly Title Making Global Illumination User Friendly Publication Type Conference Paper LBNL Report Number LBL-37860 Year of Publication 1995 Authors Ward, Gregory J. Conference Name 6th Eurographics Workshop on Rendering Date Published 06/1995 Conference Location Dublin, Ireland Call Number LBL-37860 Abstract Global illumination researchers tend to think in terms of mesh density and sampling frequency, and their software reflects this in its user interface. Advanced rendering systems are rife with long command lines and parameters for tuning the sample densities, thresholds and other algorithm-specific variables, and the novice user is quickly lost in a sea of possibilities. This paper details a successful effort of making one such global illumination system usable by people who understand their problems, even if they do not understand the methods needed to solve them, through an assisted oracle approach. A single program is introduced to map a small set of intuitive control variables to the rendering commands and parameter settings needed to produce the desired output in a reasonable time. This new executive program then serves as the basis for a graphical user interface that is both friendly in its appearance and reliable in its performance. Finally, we conclude with some future directions for improving this interface.

Note: This page contains sample records for the topic "global direct diffuse" 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

Global Health Seminar Series  

E-Print Network [OSTI]

Bay Area Global Health Seminar Series Moving beyond millennium targets in global health: The challenges of investing in health and universal health coverage Although targets can help to focus global health efforts, they can also detract attention from deeper underlying challenges in global health

Klein, Ophir

102

Enabling Green Energy and Propulsion Systems via Direct Noise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Umesh Paliath, GE Global Research; Joe Insley, Argonne National Laboratory Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI...

103

Enabling Green Energy and Propulsion Systems via Direct Noise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GE propulsion systems Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI Email: paliath@ge.com Institution: GE Global Research...

104

Anisotropic Diffusion of Polyelectrolyte Chains within Multi-layer Films  

SciTech Connect (OSTI)

We found diffusion of polyelectrolyte chains within multilayer films to be highly anisotropic, with the preferential chain motion parallel to the substrate. The degree of anisotropy was quantified by a combination of fluorescence recovery after photobleaching and neutron reflectometry, probing chain diffusion in directions parallel and perpendicular to the substrate, respectively. Chain mobility was controlled by ionic strength of annealing solutions and steric hindrance to ionic pairing of interacting polyelectrolytes.

Xu, Li [Stevens Institute of Technology, Hoboken, New Jersey; Kozlovskaya, Veronika [University of Alabama, Birmingham; Kharlampieva, Eugenia [University of Alabama, Birmingham; Ankner, John Francis [ORNL; Sukhishvili, Prof. Svetlana A. [Stevens Institute of Technology, Hoboken, New Jersey

2012-01-01T23:59:59.000Z

105

OXYGEN DIFFUSION IN HYPOSTOICHIOMETRIC URANIUM DIOXIDE  

E-Print Network [OSTI]

Research Division OXYGEN DIFFUSION IN HYPOSTOICHIOMETRIC11905 -DISCLAIMER - OXYGEN DIFFUSION IN HYPOSTOICHIOMETRICc o n e e n i g woroxygen self-diffusion coefficient

Kim, Kee Chul

2010-01-01T23:59:59.000Z

106

Direct numerical simulation of turbulent reacting flows  

SciTech Connect (OSTI)

The development of turbulent combustion models that reflect some of the most important characteristics of turbulent reacting flows requires knowledge about the behavior of key quantities in well defined combustion regimes. In turbulent flames, the coupling between the turbulence and the chemistry is so strong in certain regimes that is is very difficult to isolate the role played by one individual phenomenon. Direct numerical simulation (DNS) is an extremely useful tool to study in detail the turbulence-chemistry interactions in certain well defined regimes. Globally, non-premixed flames are controlled by two limiting cases: the fast chemistry limit, where the turbulent fluctuations. In between these two limits, finite-rate chemical effects are important and the turbulence interacts strongly with the chemical processes. This regime is important because industrial burners operate in regimes in which, locally the flame undergoes extinction, or is at least in some nonequilibrium condition. Furthermore, these nonequilibrium conditions strongly influence the production of pollutants. To quantify the finite-rate chemistry effect, direct numerical simulations are performed to study the interaction between an initially laminar non-premixed flame and a three-dimensional field of homogeneous isotropic decaying turbulence. Emphasis is placed on the dynamics of extinction and on transient effects on the fine scale mixing process. Differential molecular diffusion among species is also examined with this approach, both for nonreacting and reacting situations. To address the problem of large-scale mixing and to examine the effects of mean shear, efforts are underway to perform large eddy simulations of round three-dimensional jets.

Chen, J.H. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

107

Directives Help  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

All DOE directives are available through this site. While it may seem overwhelming, given the number of documents, we have provided a number of ways in which you may get to the information you need.

108

Interactive Volume Rendering of Diffusion Tensor Data  

SciTech Connect (OSTI)

As 3D volumetric images of the human body become an increasingly crucial source of information for the diagnosis and treatment of a broad variety of medical conditions, advanced techniques that allow clinicians to efficiently and clearly visualize volumetric images become increasingly important. Interaction has proven to be a key concept in analysis of medical images because static images of 3D data are prone to artifacts and misunderstanding of depth. Furthermore, fading out clinically irrelevant aspects of the image while preserving contextual anatomical landmarks helps medical doctors to focus on important parts of the images without becoming disoriented. Our goal was to develop a tool that unifies interactive manipulation and context preserving visualization of medical images with a special focus on diffusion tensor imaging (DTI) data. At each image voxel, DTI provides a 3 x 3 tensor whose entries represent the 3D statistical properties of water diffusion locally. Water motion that is preferential to specific spatial directions suggests structural organization of the underlying biological tissue; in particular, in the human brain, the naturally occuring diffusion of water in the axon portion of neurons is predominantly anisotropic along the longitudinal direction of the elongated, fiber-like axons [MMM+02]. This property has made DTI an emerging source of information about the structural integrity of axons and axonal connectivity between brain regions, both of which are thought to be disrupted in a broad range of medical disorders including multiple sclerosis, cerebrovascular disease, and autism [Mos02, FCI+01, JLH+99, BGKM+04, BJB+03].

Hlawitschka, Mario; Weber, Gunther; Anwander, Alfred; Carmichael, Owen; Hamann, Bernd; Scheuermann, Gerik

2007-03-30T23:59:59.000Z

109

Particle diffusion in a spheromak  

Science Journals Connector (OSTI)

The local carbon particle diffusion coefficient was measured in the Proto S-1/C spheromak with use of a test-particle injection scheme. When the plasma was not in a force-free Taylor state, and when there were pressure gradients in the plasma, the particle diffusion was 5 times that predicted by Bohm and was consistent with collisional drift-wave diffusion. The diffusion appears to be driven by correlations of the fluctuating electric field and density. During the decay of the discharge when the plasma was in the Taylor state, the diffusion coefficient of the carbon was classical.

D. D. Meyerhofer; F. M. Levinton; M. Yamada

1988-03-07T23:59:59.000Z

110

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

111

Curing | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

this paper-based instrument, the size of a deck of playing cards, enables... Read More Additive Manufacturing Demonstration at GE Global Research See how GE Global Research is...

112

Global Environmental Course Title  

E-Print Network [OSTI]

Department Global Environmental Studies Room Course Title Frontier of Sustainability Science Instructor Akihisa MORI, Global Environmental Studies Satoshi KONISHI, Institute of Advanced consisting from a variety of academic field, including philosophy, politics, economics, energy, architecture

Takada, Shoji

113

Accelerator modes and their effect in the diffusion properties in the kicked rotator  

E-Print Network [OSTI]

We highlight a few recent results on the effect of the diffusion process in deterministic area preserving maps with noncompact phase space, namely the standard map. In more detail, we focus on the anomalous diffusion arising due to the accelerator modes, i.e. resonant-like features of the phase space which are transported in a super-diffusive (ballistic) manner. Their presence affects also the trajectories lying in the immediate neighborhood resulting in anomalous (non-Gaussian) diffusion. We aim to shed some light on these special properties of the phase space by utilizing the diffusion exponent (rate of diffusion) and the momentum distribution in terms of the L\\'evy stable distributions, with the goal to reach an understanding of the global behaviour. To this end we consider a rather large interval for the kick parameter ($0\\le K \\le 70$) of the standard map where accelerator modes of different periodicity exist.

T. Manos; M. Robnik

2015-01-08T23:59:59.000Z

114

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

115

global horizontal | OpenEI  

Open Energy Info (EERE)

87 87 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142278787 Varnish cache server global horizontal Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ghana provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country)

116

Global existence and uniqueness for a non linear Boussinesq system in dimension two  

E-Print Network [OSTI]

We study the global well-posedness of a two-dimensional Boussinesq system which couples the incompressible Euler equation for the velocity and a transport equation with fractional diffusion of type $|\\DD|^{\\alpha}$ for the temperature. We prove that for $\\alpha>1,$ there exists a unique global solution for initial data with critical regularities.

Sulaiman, Samira

2012-01-01T23:59:59.000Z

117

How Do Patents Shape Global Value Chains? International and Domestic Patenting and Value-Added Trade  

E-Print Network [OSTI]

an important role in the global economy through its impact on technology diffusion, knowledge transfer they critically shape technology transfer. Coe and Helpman (1995) demonstrate the important effects of foreign R1 How Do Patents Shape Global Value Chains? International and Domestic Patenting and Value

Sekhon, Jasjeet S.

118

Commercial Building Partnerships Replication and Diffusion  

SciTech Connect (OSTI)

This study presents findings from survey and interview data investigating replication efforts of Commercial Building Partnership (CBP) partners that worked directly with the Pacific Northwest National Laboratory (PNNL). PNNL partnered directly with 12 organizations on new and retrofit construction projects, which represented approximately 28 percent of the entire U.S. Department of Energy (DOE) CBP program. Through a feedback survey mechanism, along with personal interviews, PNNL gathered quantitative and qualitative data relating to replication efforts by each organization. These data were analyzed to provide insight into two primary research areas: 1) CBP partners’ replication efforts of technologies and approaches used in the CBP project to the rest of the organization’s building portfolio (including replication verification), and, 2) the market potential for technology diffusion into the total U.S. commercial building stock, as a direct result of the CBP program. The first area of this research focused specifically on replication efforts underway or planned by each CBP program participant. Factors that impact replication include motivation, organizational structure and objectives firms have for implementation of energy efficient technologies. Comparing these factors between different CBP partners revealed patterns in motivation for constructing energy efficient buildings, along with better insight into market trends for green building practices. The second area of this research develops a diffusion of innovations model to analyze potential broad market impacts of the CBP program on the commercial building industry in the United States.

Antonopoulos, Chrissi A.; Dillon, Heather E.; Baechler, Michael C.

2013-09-16T23:59:59.000Z

119

Global Climate Change Links  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Climate Change Links Global Climate Change Links This page provides links to web pages that we at CDIAC feel do a responsible job of presenting information and discussion pertinent to the science behind the global climate change ("global warming") debate. These sites include those on both sides of the debate; some asserting that global warming is a clear and present danger, and others that might be labeled global warming "skeptics." Some of these sites don't take a position per se; they exist to offer the public objective scientific information and results on our present understanding of the climate system. The list is not intended to be comprehensive, by any means. We hope it will be especially helpful for those who may be just beginning their research into global

120

Manhattan Project: The Navy and Thermal Diffusion, 1944  

Office of Scientific and Technical Information (OSTI)

Diffusion columns, S-50 Thermal Diffusion Plant, Oak Ridge, 1945. THE NAVY AND THERMAL DIFFUSION Diffusion columns, S-50 Thermal Diffusion Plant, Oak Ridge, 1945. THE NAVY AND THERMAL DIFFUSION (Oak Ridge: Clinton, 1944) Events > The Uranium Path to the Bomb, 1942-1944 Y-12: Design, 1942-1943 Y-12: Construction, 1943 Y-12: Operation, 1943-1944 Working K-25 into the Mix, 1943-1944 The Navy and Thermal Diffusion, 1944 As problems with both Y-12 and K-25 reached crisis proportions in spring and summer 1944, the Manhattan Project received help from an unexpected source: the United States Navy. President Roosevelt had instructed that the atomic bomb effort be an Army program and that the Navy be excluded from deliberations. Navy research on atomic power, conducted primarily for submarines, received no direct aid from Leslie Groves, who, in fact, was not up-to-date on the state of Navy efforts when he received a letter on the subject from Robert Oppenheimer late in April 1944.

Note: This page contains sample records for the topic "global direct diffuse" 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

Ultrasonic NDT of titanium diffusion bonding with guided waves  

SciTech Connect (OSTI)

An ultrasonic guided wave technique is developed for the NDT of diffusion bonded titanium-to-titanium structures. A three-layer model based on the normal beam experimental results has been proposed. Dispersion curves and wave structure are analyzed to direct the experimental study. Two features related to Lamb waves propagating in diffusion bonded titanium plates, the spectral peak to peak ratios and the wave mode frequency shift, are extracted from the guided wave experimental results for both 2 mm (0.08 in.) and 4 mm (0.16 in.) diffusion bond panels. It is found for some specific modes and frequencies that these two features are sensitive to the diffusion bonding states and, therefore, could be used to distinguish good bond panels from poor bond ones.

Rose, J.L.; Zhu, W. [Pennsylvania State Univ., University Park, PA (United States). Dept. of Engineering Science and Mechanics; Zaidi, M. [Boeing Co., Long Beach, CA (United States)

1998-04-01T23:59:59.000Z

122

Thermodynamics of Diffusion  

Science Journals Connector (OSTI)

... IN his review of “Thermodynamics” (NATURE, July 25) and again in the Philosophical Magazine for July, Mr. ... I direct attention to the,context in connection with Which this result is stated in "Thermodynamics"(§§ I24"126, 156)?

G. H. BRYAN

1907-10-24T23:59:59.000Z

123

Enthalpy Diffusion in Multicomponent Flows  

SciTech Connect (OSTI)

The conclusions of this paper are: (1) Enthalpy diffusion preserves the second law. (2) Euler solvers will not produce correct temperatures in mixing regions. (3) Navier-Stokes solvers will only produce correct temperatures if q{sub d} is included. (4) Errors from neglecting enthalpy diffusion are most severe when differences in molecular weights are large. (5) In addition to temperature, enthalpy diffusion affects density, dilatation and other fields in subtle ways. (6) Reacting flow simulations that neglect the term are a dubious proposition. (7) Turbulence models for RANS and LES closures should preserve consistency between energy and species diffusion.

Cook, A W

2009-01-20T23:59:59.000Z

124

Turing instability in reaction-diffusion systems with nonlinear diffusion  

SciTech Connect (OSTI)

The Turing instability is studied in two-component reaction-diffusion systems with nonlinear diffusion terms, and the regions in parametric space where Turing patterns can form are determined. The boundaries between super- and subcritical bifurcations are found. Calculations are performed for one-dimensional brusselator and oregonator models.

Zemskov, E. P., E-mail: zemskov@ccas.ru [Russian Academy of Sciences, Dorodnicyn Computing Center (Russian Federation)

2013-10-15T23:59:59.000Z

125

Direct costing  

E-Print Network [OSTI]

oau 5e reduced. Under the same oonOitions, even ~Me on a bread scale entails not mere1y the conduct of the direct oyeraticns cf yrccessing the materials into finished products, but also the performance of auxiliary functions. these may 'ba power y... purposes have been advanced as folkway le Most of a o03RyaxO' 8 products Grc usual13r sold at prices which oovex' full product costs y plus 861ling a%el administrative expenses, plus normal profit. The inventoi~ valuate. on should be consistent...

Browning, Donald Bullock

2012-06-07T23:59:59.000Z

126

Anomalous diffusion modifies solar neutrino fluxes  

E-Print Network [OSTI]

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: Diffusion and friction coefficients are energy dependent, collisions are not two-body processes and retain memory beyond the single scattering event. A direct consequence of nonstandard diffusion is that the equilibrium energy distribution of particles departs from the Maxwellian one (tails goes to zero more slowly or faster than exponentially) modifying the reaction rates. This effect is qualitatively different from temperature and/or composition modification: Small changes in the number of particles in the distribution tails can strongly modify the rates without affecting bulk properties, such as the sound speed or hydrostatic equilibrium, which depend on the mean values from the distribution. This mechanism can considerably increase the range of predictions for the neutrino fluxes allowed by the current experimental values (cross sections and solar properties) and can be used to reduce the discrepancy between these predictions and the solar neutrino experiments.

G. Kaniadakis; A. Lavagno; M. Lissia; P. Quarati

1997-10-16T23:59:59.000Z

127

LLNL scientists find precipitation, global warming link  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

128

Geometry-induced asymmetric diffusion Robert S. Shaw*  

E-Print Network [OSTI]

channels Asymmetric diffusion appears in studies of ion transport across membranes (1 that ions can pass through a membrane more readily in one direction than the other. We demonstrate here constraints may play a role in common biological contexts such as membrane ion channels. asymmetric pores

Texas at Austin. University of

129

Numerical study on the validity of the diffusion approximation  

E-Print Network [OSTI]

of photons can be accurately modeled by the radiative transport equation (RTE).9,10 Because and the radiative transport as implemented by Monte Carlo simulation in the cases of point and ball sources. Our of the difficulties in handling the RTE directly, the diffusion approximation to the transport equation has been

Virginia Tech

130

DIFFUSION INELASTIQUE DES AIEUTRONS ET ONDES DE SPIN  

E-Print Network [OSTI]

measured in the three principal symmetry directions by neutron inelastic scattering.The spin wave of neutrons C(Eogo)scattered by a spin wave of energy Eo and wave vector qo satisfies the following diffusion inklastiquedes neutrons. On a trouvB que les relations de dispersion des ondes de spin

Boyer, Edmond

131

2013 Global Carbon Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2013 Global Carbon Project 2013 Global Carbon Project DOI: 10.3334/CDIAC/GCP_2013_V1.1 image 2013 Budget v1.1 (November 2013) image 2013 Budget v1.3 (December 2013, contains typographical corrections to 2011 Australia emissions from v1.1 and corrections to the 2011 Australia transfer and consumption emissions from v1.2) image image image image Global Carbon Dioxide Emissions to Reach 36 Billion Tonnes in 2013 Global emissions of carbon dioxide from the combustion of fossil fuels will reach 36 billion tonnes for the year 2013. "This is a level unprecedented in human history," says CSIRO's Dr Pep Canadell, Executive-Director of the Global Carbon Project (GCP) and co-author of a new report. Global emissions due to fossil fuel alone are set to grow this year at a slightly lower pace of 2.1% than the average 3.1% since 2000, reaching 36

132

Cleantech Professional Resource Global Limited CPR Global | Open Energy  

Open Energy Info (EERE)

Professional Resource Global Limited CPR Global Professional Resource Global Limited CPR Global Jump to: navigation, search Name Cleantech Professional Resource Global Limited (CPR Global) Place London, United Kingdom Zip EC4M 9DN Product Cleantech Professional Resource is a resource management consultancy focusing on the cleantech sector in the UK and Europe. References Cleantech Professional Resource Global Limited (CPR Global)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Cleantech Professional Resource Global Limited (CPR Global) is a company located in London, United Kingdom . References ↑ "Cleantech Professional Resource Global Limited (CPR Global)" Retrieved from "http://en.openei.org/w/index.php?title=Cleantech_Professional_Resource_Global_Limited_CPR_Global&oldid=343687

133

Powering | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Trials GE Global Research is advancing technology that will make the inspection of wind turbines faster and more reliable for customers.... Read More Brilliant(tm) Wind...

134

Subsidizing Global Solar Power.  

E-Print Network [OSTI]

?? With national cuts on solar PV subsidies and the current “oversupply” of panels, the global solar market is clearly threatened by a contraction. Yet,… (more)

Arnesson, Daniel

2013-01-01T23:59:59.000Z

135

BDP: BrainSuite Diffusion Pipeline  

E-Print Network [OSTI]

BDP: BrainSuite Diffusion Pipeline Chitresh Bhushan #12; Quantify microstructural tissue ROI Connectivity ROI Statistics MPRAGE Diffusion #12;Diffusion Pipeline Dicom to NIfTI Co ROIs Custom ROIs #12;Diffusion Pipeline Dicom to NIfTI Co-registration Diffusion Modeling Tractography

Leahy, Richard M.

136

Global Calculation of Tidal Energy Conversion into Vertical Normal Modes  

Science Journals Connector (OSTI)

A direct calculation of the tidal generation of internal waves over the global ocean is presented. The calculation is based on a semianalytical model, assuming that the internal tide characteristic slope exceeds the bathymetric slope (subcritical ...

Saeed Falahat; Jonas Nycander; Fabien Roquet; Moundheur Zarroug

2014-12-01T23:59:59.000Z

137

Double-Diffusive Intrusions in a Stable Salinity Gradient “Heated from Below”  

Science Journals Connector (OSTI)

Two-dimensional direct numerical simulations (DNS) are used to investigate the growth and nonlinear equilibration of spatially periodic double-diffusive intrusion for negative vertical temperature Tz salinity Sz gradients, which are ...

Julian Simeonov; Melvin E. Stern

2008-10-01T23:59:59.000Z

138

ALS Global Agroecosystems -Draft 1 Global Agroecosystems  

E-Print Network [OSTI]

following class or by appointment PREREQUISITES Introduction to Soils (SWS 3022), Soils for Environmental. This course will emphasize greater understanding of this triple bottom line in agricultural production and timely global issue in agroecology and effectively communicate in video format. CLASS FORMAT Three 50

Ma, Lena

139

Molecular imaging of water binding state and diffusion in breast cancer using diffuse optical spectroscopy and diffusion weighted MRI  

E-Print Network [OSTI]

Molecular imaging of water binding state and diffusion inChung et al. , “In vivo water state measurements in breastby measuring tis- sue water state using diffuse optical

Chung, So Hyun; Yu, Hon; Su, Min-Ying; Cerussi, Albert E.; Tromberg, Bruce J.

2012-01-01T23:59:59.000Z

140

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Brazil from NREL Brazil from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a

Note: This page contains sample records for the topic "global direct diffuse" 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

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

South America from NREL South America from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate influences. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

142

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

Central America and the Carribean from NREL Central America and the Carribean from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate influences. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

143

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Central America from NREL Central America from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a

144

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Cuba from NREL Cuba from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a location, if enough years of data are present. The TMY consists of months selected from individual years and concatenated to form a complete year.. Because of the selection criteria, these TMYs are not appropriate for simulations of wind energy conversion systems. A TMY provides a standard for hourly data for solar radiation and other meteorological elements that permit performance comparisons of system types and configurations for one or more locations. A TMY is not necessarily a good indicator of conditions over the next year, or even the next 5 years. Rather, it represents conditions judged to be typical over a long period of time, such as 30 years.

145

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Nepal from NREL Nepal from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a location, if enough years of data are present. The TMY consists of months selected from individual years and concatenated to form a complete year.. Because of the selection criteria, these TMYs are not appropriate for simulations of wind energy conversion systems. A TMY provides a standard for hourly data for solar radiation and other meteorological elements that permit performance comparisons of system types and configurations for one or more locations. A TMY is not necessarily a good indicator of conditions over the next year, or even the next 5 years. Rather, it represents conditions judged to be typical over a long period of time, such as 30 years.

146

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Ghana from NREL Ghana from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a

147

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

East Asia from NREL East Asia from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

148

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Sri Lanka from NREL Sri Lanka from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a

149

Current drivers and future directions of global livestock disease dynamics  

Science Journals Connector (OSTI)

...demand models other than...and HPAI outbreaks or threats...ability to predict changes is...Endemic disease outbreaks Greater private...and other models Livestock Revolution...2005 ) Models of foot-and-mouth...Web data predict flu . Nature...

Brian D. Perry; Delia Grace; Keith Sones

2013-01-01T23:59:59.000Z

150

Radionuclide Concentrations in Surface Air: Direct Relationship to Global Fallout  

Science Journals Connector (OSTI)

...Centuries of Climatic Record from Camp Century on the Greenland Ice Sheet Abstract...the entire Greenland ice sheet at Camp Century (6). Certain physical and chemical...stable isotope dating method on the Camp Century core (see 10). The appr-oximiiate...

Michael T. Kleinman; Herbert L. Volchok

1969-10-17T23:59:59.000Z

151

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Kenya from NREL Kenya from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a location, if enough years of data are present. The TMY consists of months selected from individual years and concatenated to form a complete year.. Because of the selection criteria, these TMYs are not appropriate for simulations of wind energy conversion systems. A TMY provides a standard for hourly data for solar radiation and other meteorological elements that permit performance comparisons of system types and configurations for one or more locations. A TMY is not necessarily a good indicator of conditions over the next year, or even the next 5 years. Rather, it represents conditions judged to be typical over a long period of time, such as 30 years.

152

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

Africa from NREL Africa from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

153

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

China from NREL China from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a location, if enough years of data are present. The TMY consists of months selected from individual years and concatenated to form a complete year. Because of the selection criteria, these TMYs are not appropriate for simulations of wind energy conversion systems. A TMY provides a standard for hourly data for solar radiation and other meteorological elements that permit performance comparisons of system types and configurations for one or more locations. A TMY is not necessarily a good indicator of conditions over the next year, or even the next 5 years. Rather, it represents conditions judged to be typical over a long period of time, such as 30 years.

154

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Ethiopia from NREL Ethiopia from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a

155

Solar: hourly solar (direct normal (DNI), global horizontal (GHI), and  

Open Energy Info (EERE)

Bangladesh stations from NREL Bangladesh stations from NREL Dataset Summary Description (Abstract): Each data file is a set of hourly values of solar radiation and meteorological elements for a 1-year period. Solar radiation is modeled using the NREL METSTAT model, with surface observed cloud cover being the principal model input. Each container file contains up to 30 yearly files for one station, plus the Typical Meteorological Year (TMY) file for the selected station, plus documentation files and a TMY data reader file for use with Microsoft Excel. (Purpose): Simulations (Supplemental Information): The intended use of these data files is for computer simulations of solar energy conversion systems and building systems. The yearly data may be suitable for designing systems and their components to meet the worst-case conditions occurring at a location, if enough years of data are present. The TMY consists of months selected from individual years and concatenated to form a complete year.. Because of the selection criteria, these TMYs are not appropriate for simulations of wind energy conversion systems. A TMY provides a standard for hourly data for solar radiation and other meteorological elements that permit performance comparisons of system types and configurations for one or more locations. A TMY is not necessarily a good indicator of conditions over the next year, or even the next 5 years. Rather, it represents conditions judged to be typical over a long period of time, such as 30 years.

156

Global Development Our Responsibility  

E-Print Network [OSTI]

of expertise cover urgent global issues such as food production, energy supply, climate change, biodiversity e ort to address urgent global issues particularly a ecting developing countries e.g. climate change of Communication, 2012 · Project Leader: Karin Nilsson · Graphic Design: Viktor Wrange & Michael Kvick Cover Photo

157

Active Diffusion of Motor Particles  

Science Journals Connector (OSTI)

The movement of motor particles consisting of one or several molecular motors bound to a cargo particle is studied theoretically. The particles move on patterns of immobilized filaments. Several patterns are described for which the motor particles undergo nondirected but enhanced diffusion. Depending on the walking distance of the particles and the mesh size of the patterns, the active diffusion coefficient exhibits three different regimes. For micrometer-sized motor particles in water, e.g., this diffusion coefficient can be enhanced by 2 orders of magnitude.

Stefan Klumpp and Reinhard Lipowsky

2005-12-23T23:59:59.000Z

158

Theory of Grain Boundary Diffusion  

Science Journals Connector (OSTI)

The previously proposed dependence of the structure of grain boundaries upon the angle of disorientation of the two grains is used as a basis of a quantitative consideration of diffusion along grain boundaries and in particular of the apparent activation energies. At small angles in the dislocation range the diffusion is controlled by volume diffusion mechanism. At high angles near 45° the model of a uniform grain boundary is applicable. In the intermediate range an array of rod-like areas of distorted lattice leads to low or even negative apparent activation energies. The theory is in good agreement with experiment.

R. Smoluchowski

1952-08-01T23:59:59.000Z

159

Prediction of Room Air Diffusion for Reduced Diffuser Flow Rates  

E-Print Network [OSTI]

modeling at the air supply device (ASHRAE Research Project RP -1009, ?Simplified Diffuser Boundary Conditions for Numerical Room Airflow Models, 2001) 2.2.4 Box model Nielsen (1989, 1992) proposed the box method with an imaginary box near.... Nielsen (1989, 13 1992). Results obtained from the box method are in good agreement with the measured data. Figure 5 Methods for momentum modeling in front of an air supply device (ASHRAE RP -1009, ?Simplified Diffuser Boundary Conditions...

Gangisetti, Kavita

2011-02-22T23:59:59.000Z

160

Climate change diffusion: While the world tips, business schools lag  

Science Journals Connector (OSTI)

The influence of business schools on business practitioners is considerable. An important proportion of corporate leaders hold a degree in business administration or an MBA, if not both. In the context of climate change, this influence matters: greenhouse gas (GHG) emissions from a selection of global 500 companies approximate that of the USA and the EU15 combined. Not only do corporations have a significant climate footprint, but the impact of climate change on the business landscape is already noticeable. Yet, meeting the managerial challenges that climate change brings requires knowledge only moderately addressed in business education and scholarship today. Climate change tends to be discussed in electives – hence reaching only a fraction of students – and tends to be treated alongside a myriad of other corporate social responsibility issues. Moreover, from 1992 to 2008, only seven articles with titles containing climate change or global warming were published in the top-30 peer-reviewed management journals (this paper, see also Goodall, 2008). In this paper, by mapping the diffusion of climate change within press media and academic peer-reviewed publications, I argue that understanding the existing lag in business scholarship engagement requires a fundamental understanding of processes that either hinder or lead to the diffusion of new ideas. To do so, I present a simple yet novel approach for the quantification of climate change or global warming (CCorGW) coverage relative to population size. My results on the diffusion of the climate change idea over time show: (a) an overall increase in proportional coverage in all databases (b) tipping points around the late 1980s and circa 2005 and (c) delays in adoption between press categories. I explicate the occurrence of these tipping points as well as the existence of delays by theoretically unifying my analyses with results from previous studies under the umbrella of the diffusion of innovation paradigm. I suggest that the following key factors have contributed in slowing the diffusion within business scholarship: (a) corporate values, beliefs and operational modes (b) social structures and incentives prevailing within academia and finally (b) academia's valued research communication channels. I conclude by elaborating key recommendations to facilitate the diffusion of this idea to business scholars and other influential audiences.

Genevieve Patenaude

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

R&D100 Winners * Impacts on Global Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

R&D100 Winners * Impacts on Global Technology R&D100 Winners * Impacts on Global Technology OUTSIDE FRONT COVER 2 SANDIA NATIONAL LABOR ATORIES 3 R&D100 Winners * Impacts on Global Technology For further information, contact: Henry R. Westrich LDRD Program Manager hrwestr@sandia.gov 505-844-9092 ABOUT THE COVER: Representative images from the R&D100- winning technologies in this brochure, all with their roots in Sandia Laboratory Directed Research and Development (LDRD). 4 SANDIA NATIONAL LABOR ATORIES 5 R&D100 Winners * Impacts on Global Technology Contents More-sophisticated Silicon Br ains

162

The Global Grid  

Science Journals Connector (OSTI)

This paper puts forward the vision that a natural future stage of the electricity network could be a grid spanning the whole planet and connecting most of the large power plants in the world: this is the “Global Grid”. The main driving force behind the Global Grid will be the harvesting of remote renewable sources, and its key infrastructure element will be the high capacity long transmission lines. Wind farms and solar power plants will supply load centers with green power over long distances. This paper focuses on the introduction of the concept, showing that a globally interconnected network can be technologically feasible and economically competitive. We further highlight the multiple opportunities emerging from a global electricity network such as smoothing the renewable energy supply and electricity demand, reducing the need for bulk storage, and reducing the volatility of the energy prices. We also discuss possible investment mechanisms and operating schemes. Among others, we envision in such a system a global power market and the establishment of two new coordinating bodies, the “Global Regulator” and the “Global System Operator”.

Spyros Chatzivasileiadis; Damien Ernst; Göran Andersson

2013-01-01T23:59:59.000Z

163

Hot carrier diffusion in graphene  

E-Print Network [OSTI]

We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal...

Ruzicka, Brian Andrew; Wang, Shuai; Werake, Lalani Kumari; Weintrub, Ben; Loh, Kian Ping; Zhao, Hui

2010-11-01T23:59:59.000Z

164

Accelerating and Retarding Anomalous Diffusion  

E-Print Network [OSTI]

In this paper Gaussian models of retarded and accelerated anomalous diffusion are considered. Stochastic differential equations of fractional order driven by single or multiple fractional Gaussian noise terms are introduced to describe retarding and accelerating subdiffusion and superdiffusion. Short and long time asymptotic limits of the mean squared displacement of the stochastic processes associated with the solutions of these equations are studied. Specific cases of these equations are shown to provide possible descriptions of retarding or accelerating anomalous diffusion.

Chai Hok Eab; S. C. Lim

2012-01-14T23:59:59.000Z

165

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

166

Regional and Global Data  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Products > Regional/Global Products > Regional/Global Regional and Global Data Biogeochemical Dynamics Data Regional and global biogeochemical dynamics data can be used to improve our understanding of the structure and function of various ecosystems; to enable prediction across spatial and temporal scales; and to parameterize and validate terrestrial ecosystem models. The ORNL DAAC compiles, archives, and distributes more than 150 products from the following projects: Climate Collections Hydroclimatology Collections ISLSCP II Project Net Primary Productivity (NPP) River Discharge (RIVDIS) Russian Land Cover (RLC) Soil Collections Vegetation Collections Vegetation-Ecosystem Modeling (VEMAP) Climate Collections Climate collections include measured and modeled values for variables such as temperature, precipitation, humidity, radiation, wind velocity, and

167

Pax Global, Inc.,  

Broader source: Energy.gov (indexed) [DOE]

Pax Global, Inc., Pax Global, Inc., (freezers) Issued: April 2, 2013 BEFORE THE U.S. DEPARTMENT OF ENERGY Washington, D.C. 20585 ) ) ) ) ) Case Number: 2013-SE-L413 NOTICE OF NONCOMPLIANCE DETERMINATION Manufacturers and private labelers are prohibited from distributing covered products in the United States that do not comply with applicable federal energy conservation standards. 10 C.F.R. § 429.102; 42 U.S.C. § 6302. Pax Global, Inc. ("Pax Global") is a private labeler and uses the "Crosley" and "Daewoo" brands to distribute freezers in the United States. TESTING l. The U.S. Department of Energy ("DOE") tested four privately labeled units o basic model numbe , manufactured , 1 that had been distributed in the United States by a third-pa1iy private labeler.

168

KRFTWRK – Global Human Electricity  

E-Print Network [OSTI]

Power Network 2.1.1 Virtual Power Plants The Global Powernetwork, based on "Virtual Power Plants", called "VPP". A "participant runs a virtual human power plant. Per every "

Prohaska, Rainer

2009-01-01T23:59:59.000Z

169

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

170

Global New Product Development  

Science Journals Connector (OSTI)

In the age of ubiquitous internet bandwidth, the development of a global market, coupled with rapid development of what once were underdeveloped countries and regions has led to many companies thinking and act...

Russell Watt

2014-01-01T23:59:59.000Z

171

Mobile Means Global  

Science Journals Connector (OSTI)

mHealth is rapidly expanding globally, in both volume ... questions developers and users must ask is whether mHealth can be scaled and sustained for the ... governments, foundations, entrepreneurs, and businesses...

Donna Malvey; Donna J. Slovensky

2014-01-01T23:59:59.000Z

172

Global Biomass Energy Potential  

Science Journals Connector (OSTI)

The intensive use of renewable energy is one of the options to stabilize...2...atmospheric concentration at levels of 350 to 550ppm. A recent evaluation of the global potential of primary renewable energy carried...

Jos#X00C9; Roberto Moreira

2006-03-01T23:59:59.000Z

173

Earth's Global Energy Budget  

Science Journals Connector (OSTI)

An update is provided on the Earth's global annual mean energy budget in the light of new observations and analyses. In 1997, Kiehl and Trenberth provided a review of past estimates and performed a number of radiative computations to better ...

Kevin E. Trenberth; John T. Fasullo; Jeffrey Kiehl

2009-03-01T23:59:59.000Z

174

The diffusive ocean conveyor Mark Holzer1,2,3,4  

E-Print Network [OSTI]

in water parcels transported on the conveyor's lower limb [Williams and Follows, 2003]. The GOC schematicThe diffusive ocean conveyor Mark Holzer1,2,3,4 and Franc¸ois W. Primeau5 Received 7 March 2006-density transport diagnostic to trace out the deep branch of the ocean conveyor in a global circulation model. Our

175

ARM - Lesson Plans: Global Warming  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

176

Enhanced self-diffusion of adsorbed methanol in silica aerogel  

Science Journals Connector (OSTI)

Molecular transport of a two-component system of liquid and vapor in a porous medium can be anomalously increased owing to fast exchange between the two phases [Phys. Rev. Lett. 63, 43 (1989)]. We have investigated this phenomenon measuring the self-diffusion coefficient of methanol adsorbed in a 98% porosity aerogel using nuclear magnetic resonance field gradient techniques. We found enhancement of several orders of magnitude from which we determined the ballistic mean-free path in the vapor phase. We have grown globally uniform anisotropic aerogels and applied the diffusion measurements to characterize the anisotropy. Our results are important for understanding the novel properties of superfluid He3 confined within an aerogel framework and for application to other physical systems.

Jeongseop A. Lee; A. M. Mounce; Sangwon Oh; A. M. Zimmerman; W. P. Halperin

2014-11-03T23:59:59.000Z

177

GLOBAL GOVERNANCE FIGHTING POVERTY 26 GLOBAL AGENDA 2003  

E-Print Network [OSTI]

, they would discover a nearly total disparity between global commitments and domestic politics. Bush hasGLOBAL GOVERNANCE FIGHTING POVERTY 26 GLOBAL AGENDA 2003 the world promised to put real resources credible document spelling out the US role in a global war against AIDS. The planned US financial

178

Chapter 1 - Introduction to Diffusion MR  

Science Journals Connector (OSTI)

Abstracts Developments in the last century have led to a better understanding of diffusion—the perpetual mixing of molecules caused by thermal motion. In this chapter, the basic principles governing the diffusion phenomenon and its measurement using magnetic resonance (MR) are reviewed. The concepts of the apparent diffusion coefficient and of the diffusion propagator as well as their MR measurements are introduced from basic principles. Finally, the influence of neural tissue microstructure on the diffusion-weighted MR signal is briefly discussed.

Peter J. Basser; Evren Özarslan

2014-01-01T23:59:59.000Z

179

ARM - Measurement - Shortwave narrowband diffuse upwelling irradiance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

upwelling irradiance upwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave narrowband diffuse upwelling irradiance The rate at which radiant energy in narrow bands of wavelengths shorter than approximately 4 {mu}m, that has been scattered in the atmosphere at least once, passes through a horizontal unit area in an upward direction. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MFR : Multifilter Radiometer

180

Turbulent diffusion with rotation or magnetic fields  

E-Print Network [OSTI]

The turbulent diffusion tensor describing the evolution of the mean concentration of a passive scalar is investigated for forced turbulence either in the presence of rotation or a magnetic field. With rotation the Coriolis force causes a sideways deflection of the flux of mean concentration. Within the magnetohydrodynamics approximation there is no analogous effect from the magnetic field because the effects on the flow do not depend on the sign of the field. Both rotation and magnetic fields tend to suppress turbulent transport, but this suppression is weaker in the direction along the magnetic field. Turbulent transport along the rotation axis is not strongly affected by rotation, except on shorter length scales, i.e. when the scale of the variation of the mean field becomes comparable with the scale of the energy-carrying eddied.

Brandenburg, Axel; Vasil, Geoffrey M

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

NETL: Global Environmental Benefits  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Environmental Benefits Global Environmental Benefits Gasification Systems Global Environmental Benefits Environmental performance for future energy production systems is a much greater factor as emission standards tighten in the United States and worldwide. The outstanding environmental performance of gasification systems makes it an excellent technology for the clean production of electricity and other products. In addition, the reduction of CO2 emissions is one of the major challenges facing industry in response to global climate change. Other countries with coal reserves might potentially import technologies developed in the United States to enable low-cost gasification with carbon capture and EOR or sequestration. Not only will this benefit the U.S. gasification technology industry, but it will also result in a global environmental benefit through more affordable control of greenhouse gases (GHGs). See the U.S. Environmental Protection Agency (EPA) link below for a summary of the impact of fossil fuels without carbon capture on CO2 emissions, on the GHG contributions of different countries, and of the projected impact of developing countries to 2030:

182

The Tourism Global Value Chain  

E-Print Network [OSTI]

The Tourism Global Value Chain ECONOMIC UPGRADING AND WORKFORCE DEVELOPMENT Michelle Christian 2011 CENTER on GLOBALIZATION, GOVERNANCE & COMPETITIVENESS #12;The Tourism Global Value Chain: Economic: November 17, 2011 #12;The Tourism Global Value Chain: Economic Upgrading and Workforce Development i Table

Richardson, David

183

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

184

Principal Associate Director - Global Security  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Principal Associate Director - Global Security Principal Associate Director - Global Security As Principal Associate Director for Global Security, Wallace leads Laboratory programs with special focus on developing and applying the scientific and engineering capabilities to address complex national and global security threats. Contact Operator Los Alamos National Laboratory (505 667-5061 Wallace's expertise is forensic seismology, a highly specialized discipline focusing on detection and quantification of nuclear tests. Terry C. Wallace, Jr. Principal Associate Director for Global Security Terry C. Wallace, Jr., Principal Associate Director for Global Security As Principal Associate Director for Global Security, Wallace leads Laboratory programs with a focus on applying scientific and engineering capabilities

185

Hot carrier diffusion in graphene  

Science Journals Connector (OSTI)

We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene-oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal dynamics of hot carriers after a pointlike excitation are monitored. Carrier-diffusion coefficients of 11?000 and 5500?cm2?s?1 are measured in epitaxial graphene and reduced graphene-oxide samples, respectively, with a carrier temperature on the order of 3600 K. The demonstrated optical techniques can be used for noncontact and noninvasive in situ detection of transport properties of graphene.

Brian A. Ruzicka; Shuai Wang; Lalani K. Werake; Ben Weintrub; Kian Ping Loh; Hui Zhao

2010-11-08T23:59:59.000Z

186

Chapter 10 - Cross-Subject Comparison of Local Diffusion MRI Parameters  

Science Journals Connector (OSTI)

Abstract There has been much interest in using magnetic resonance diffusion imaging to provide information about anatomical connectivity in the brain by measuring the anisotropic diffusion of water in white matter tracts. One of the measures most commonly derived from diffusion data is fractional anisotropy (FA), which quantifies how strongly directional the local tract structure is. Many imaging studies are starting to use FA images (and other diffusion-derived parameters) in voxelwise statistical analyses, in order to localize brain changes related to development, degeneration, and disease. However, in order to compare such local changes in diffusion parameters across subjects, it is necessary to solve the “correspondence problem,” to determine which location in each subject’s diffusion images corresponds to the equivalent anatomical location in the other subjects. Some researchers have used generic registration methods to try to achieve correspondence, some have used region-of-interest approaches, some have used tractography to parameterize diffusion parameters according to anatomical location, and some have combined different aspects of all of these approaches to attempt to achieve robust and accurate correspondence. This chapter describes many such approaches in the literature, discusses the potential richness available when using more diffusion-derived information than purely the FA, and also illustrates some of the dangers that the researcher should be aware of when interpreting the analysis of multi-subject diffusion MRI studies.

Stephen M. Smith; Gordon Kindlmann; Saad Jbabdi

2014-01-01T23:59:59.000Z

187

Anisotropic diffusion of hydrogen atoms on the Si(100)-2×1 surface  

Science Journals Connector (OSTI)

This paper presents first-principles total-energy calculations of hydrogen-adatom diffusion on a Si(100)-2×1 reconstructed surface. The transition states for hydrogen-atom-diffusion pathways were established by mapping out the potential energy of a hydrogen atom jumping between the dangling bonds of a Si(100)-2×1 surface modeled by embedded finite silicon clusters. The diffusion barriers are high (2–3 eV) and wide (?3–4 Å), suggesting that H-atom diffusion on Si(100) proceeds via mostly a classical hopping mechanism instead of tunneling. Furthermore, diffusion of hydrogen atoms is predicted to be anisotropic, being preferentially directed parallel to the silicon-dimer rows, with an activation energy of 2.0 eV. Higher activation energies of 2.5 and 2.7 eV are predicted for diffusion perpendicular to dimer rows, for the cases of hydrogen atoms hopping from one dangling bond to a neighboring dangling bond on the same dimer and on an adjacent dimer, respectively. The mechanism for H-atom diffusion along dimer rows is markedly different from that previously proposed for Si-adatom diffusion on Si(100): H atoms are predicted to diffuse along edges of the dimer rows rather than down the middle.

Christine J. Wu and Emily A. Carter

1992-08-15T23:59:59.000Z

188

global | OpenEI  

Open Energy Info (EERE)

global global Dataset Summary Description GIS data for offshore wind speed (meters/second). Specified to Exclusive Economic Zones (EEZ).Wind resource based on NOAA blended sea winds and monthly wind speed at 30km resolution, using a 0.11 wind sheer to extrapolate 10m - 90m. Annual average >= 10 months of data, no nulls. Source National Renewable Energy Laboratory (NREL) Date Released Unknown Date Updated Unknown Keywords GIS global NOAA NREL offshore wind wind speed Data application/zip icon Download Shapefile (zip, 18.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Other or unspecified, see optional comment below Comment Please cite NREL and NOAA Rate this dataset Usefulness of the metadata

189

Finite-rate chemistry and transient effects in direct numerical simulations of turbulent nonpremixed flames  

SciTech Connect (OSTI)

Three-dimensional direct numerical simulations (DNS) of turbulent nonpremixed flames including finite-rate chemistry and heat release effects were performed. Two chemical reaction models were considered: (1) a single-step global reaction model in which the heat release and activation energy parameters are typical combustion applications, and (2) a two-step reaction model to stimulate radical production and consumption and to compare against the single-step model. The model problem consists of the interaction between an initially unstained laminar diffusion flame and a three-dimensional field of homogeneous turbulence. Conditions ranging from fast chemistry to the pure mixing limit were studied by varying a global Damkoehler number. Results suggest that turbulence-induced mixing acting along the stoichiometric line leads to a strong modification of the inner structure of the turbulent flame compared with a laminar strained flame, resulting in intermediate species concentrations well above the laminar prediction. This result is consistent the experimental observations. Comparison of the response of the turbulent flame structure due to changes in the scalar dissipation rate with a steady strained laminar flame reveals that unsteady strain rates experienced by the turbulent flame may be responsible for h3e observed high concentrations of reaction intermediates.

Mahalingam, S. [Univ. of Colorado, Boulder, CO (United States). Center for Combustion Research] [Univ. of Colorado, Boulder, CO (United States). Center for Combustion Research; Chen, J.H. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility] [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility; Vervisch, L. [CORIA, Rouen (France). Laboratoire de Mechanique des Fluides Numeriques] [CORIA, Rouen (France). Laboratoire de Mechanique des Fluides Numeriques

1995-08-01T23:59:59.000Z

190

Explicit global integrators  

E-Print Network [OSTI]

be advantageous. For this purpose, forward interpolation utilizing Radau Quadrature will be employed. An explicit method of global integration has been developed to estimate a solution to a differential equation. A set of functions P (x), P (x), , P (x) and a... set of points n+1 x , x , , x can be found such that n+1 r x n+1 f(u)du = g P. (x)i'(x. ) 0 i=1 for all x when f(u) is a polynomial of degree n or less. The above process is described by Axelsson as global integration. In . th the cases...

Merriam, Robert Stevens

2012-06-07T23:59:59.000Z

191

carbon sequestration via direct injection  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SEQUESTRATION VIA DIRECT INJECTION SEQUESTRATION VIA DIRECT INJECTION Howard J. Herzog, Ken Caldeira, and Eric Adams INTRODUCTION The build-up of carbon dioxide (CO 2 ) and other greenhouse gases in the Earth's atmosphere has caused concern about possible global climate change. As a result, international negotiations have produced the Framework Convention on Climate Change (FCCC), completed during the 1992 Earth Summit in Rio de Janeiro. The treaty, which the United States has ratified, calls for the "stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system." The primary greenhouse gas is CO 2 , which is estimated to contribute to over two-thirds of any climate change. The primary source of CO

192

Global Information Management Research: What have we Learned in the Past Decade?  

Science Journals Connector (OSTI)

This study assesses the past decade in the GIM domain, based on Journal of Global Information Management JGIM research findings. Based on the issues addressed by these articles, the authors develop 11 topical categories and discuss each in terms of the ... Keywords: Culture, Diffusion and Adoption, E-Commerce, E-Government, Global Information Management, International Business, Knowledge Management, MIS in Developing Countries, MIS in the Multinational Company MNC, National Infrastructure and Virtual Teams, Offshoring and Outsourcing

Fred Niederman; Hadi Alhorr; Yung-Hwal Park; Carri R. Tolmie

2012-01-01T23:59:59.000Z

193

Acetone-Assisted Oxygen Vacancy Diffusion on TiO2(110)  

SciTech Connect (OSTI)

We have studied the dynamic relationship between acetone and bridge-bonded oxygen (Ob) vacancy (VO) defect sites on the TiO2(110)-1 × 1 surface using scanning tunneling microscopy (STM) and density function theory (DFT) calculations. We report an adsorbate-assisted VO diffusion mechanism. The STM images taken at 300 K show that acetone preferably adsorbs on the VO site and is mobile. The sequential isothermal STM images directly show that the mobile acetone effectively migrates the position of VO by a combination of two acetone diffusion channels: one is the diffusion along the Ob row and moving as an alkyl group, which heals the initial VO; another is the diffusion from the Ob row to the fivecoordinated Ti4+ row and then moving along the Ti4+ row as an acetone, which leaves a VO behind. The calculated acetone diffusion barriers for the two channels are comparable and agree with experimental results.

Xia, Yaobiao; Zhang, Bo; Ye, Jingyun; Ge, Qingfeng; Zhang, Zhenrong

2012-10-18T23:59:59.000Z

194

Detachment of Liquid-Water Droplets from Gas-Diffusion Layers  

SciTech Connect (OSTI)

A critical issue for optimal water management in proton-exchange-membrane fuel cells at lower temperatures is the removal of liquid water from the cell. This pathway is intimately linked with the phenomena of liquid-water droplet removal from surface of the gas-diffusion layer and into the flow channel. Thus, a good understanding of liquid-water transport and droplet growth and detachment from the gas-diffusion layer is critical. In this study, liquid-water droplet growth and detachment on the gas-diffusion layer surfaces are investigated experimentally to improve the understating of water transport through and removal from gas-diffusion layers. An experiment using a sliding-angle measurement is designed and used to quantify and directly measure the adhesion force for liquid-water droplets, and to understand the droplets? growth and detachment from the gas-diffusion layers.

Das, Prodip K.; Grippin, Adam; Weber, Adam Z.

2011-07-01T23:59:59.000Z

195

Nitrogen Diffusion in Amorphous Silicon Nitride Isotope Multilayers Probed by Neutron Reflectometry  

Science Journals Connector (OSTI)

Amorphous silicon nitride is a model system for a covalently bound amorphous solid with a low atomic mobility where reasonable values of self-diffusivities are still lacking. We used neutron reflectometry on isotope enriched Si3?N414/Si3?N415 multilayers to determine nitrogen self-diffusivities ranging from 10-24 to 10-21??m2/s between 950 and 1250?°C. Time dependent diffusivities observed at 1150?°C indicate the presence of structural relaxation. For long annealing times (relaxed state) the diffusivities follow an Arrhenius law with an activation enthalpy of (3.6±0.4)??eV. The results are indicative of a direct diffusion mechanism without the involvement of thermal point defects.

H. Schmidt; M. Gupta; M. Bruns

2006-02-07T23:59:59.000Z

196

Nitrogen Diffusion in Amorphous Silicon Nitride Isotope Multilayers Probed by Neutron Reflectometry  

SciTech Connect (OSTI)

Amorphous silicon nitride is a model system for a covalently bound amorphous solid with a low atomic mobility where reasonable values of self-diffusivities are still lacking. We used neutron reflectometry on isotope enriched Si{sub 3} {sup 14}N{sub 4}/Si{sub 3} {sup 15}N{sub 4} multilayers to determine nitrogen self-diffusivities ranging from 10{sup -24} to 10{sup -21} m{sup 2}/s between 950 and 1250 deg. C. Time dependent diffusivities observed at 1150 deg. C indicate the presence of structural relaxation. For long annealing times (relaxed state) the diffusivities follow an Arrhenius law with an activation enthalpy of (3.6{+-}0.4) eV. The results are indicative of a direct diffusion mechanism without the involvement of thermal point defects.

Schmidt, H.; Gupta, M.; Bruns, M. [AG Thermochemie und Mikrokinetik, Fakultaet fuer Natur-und Materialwissenschaften, TU Clausthal, D-38678 Clausthal-Zellerfeld (Germany); Laboratory for Neutron Scattering, ETH Zuerich and PSI, Paul Scherrer Institute, Villigen, CH-5232 (Switzerland); Institut fuer Instrumentelle Analytik, Forschungszentrum Karlsruhe GmbH, D-76021 Karlsruhe (Germany)

2006-02-10T23:59:59.000Z

197

Global Biodiversity Conservation Priorities  

E-Print Network [OSTI]

Global Biodiversity Conservation Priorities T. M. Brooks,1,2,3 * R. A. Mittermeier,1 G. A. B. da is essential to minimize biodiversity loss. To address this need, biodiversity conservation organizations have conservation funding. H uman actions are causing a biodiversity crisis, with species extinction rates up

Wilmers, Chris

198

Global Lightning Observations  

E-Print Network [OSTI]

Flash Rate Global distribution of lightning from a combined nine years of observations of the NASA OTDGlobal Lightning Observations #12;Optical Transient Detector ( launched April, 1995 ) Lightning Imaging Sensor ( launched November, 1997 ) Lightning Detection from Low Earth Orbit #12;LIS on TRMM #12

California at Berkeley, University of

199

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.

200

Vaccines and global health  

Science Journals Connector (OSTI)

...been an appropriate, rational process for global priority setting...recs/acip/downloads/mtg-slides-oct10/02-3-mening-CostEffect...comparing choices is found, the process of new vaccine introduction...antigen through the complicated process from first identification to...

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Global Health Seminar Series  

E-Print Network [OSTI]

Bay Area Global Health Seminar Series Monday, January 27, 2014 2:30pm ­ 4:00pm (Reception to follow at the Center for Health Policy and the Woods Institute for the Environment. He studies how economic, political, and natural environments affect population health in developing countries using a mix of experimental

Klein, Ophir

202

A Global Portfolio Strategy for Climate Change Technology Development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Global Portfolio Strategy for Climate Change Technology Development A Global Portfolio Strategy for Climate Change Technology Development Speaker(s): Geoffrey J. Blanford Date: July 21, 2005 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Afzal Siddiqui John Stoops In this study we propose a novel formulation of a decision problem in R&D strategy. The problem is motivated by and applied to the context of technologies relevant to global climate change, but is characterized in general by an aggregate R&D decision-maker with a social welfare objective, technology diffusion markets subject to externalities in which private costs are minimized, and uncertainty in both technological and environmental factors. A technology strategy is defined as the allocation of R&D investment across several broad research programs, and the

203

Regional and Global Data in Mercury, December 2000  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Regional and Global Data in Mercury Regional and Global Data in Mercury Regional and global biogeochemical dynamics data can now be located and acquired through a metadata search system at the ORNL DAAC. Climate, hydroclimatology, soil, and vegetation data held by data centers around the world are available through a Web-based system called "Mercury." Mercury allows users to search metadata files to identify data sets of interest, and it directs the users to the data. The data sets indexed in Mercury were chosen by the ORNL DAAC's User Working Group as important to the global change research community for understanding the function of terrestrial ecosystems and for examining patterns across temporal and spatial scales. The following types of regional and global data are currently indexed in

204

The Global Historical Climatology Network: Long-Term Monthly Temperature,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The Global Historical Climatology Network: Long-Term Monthly Temperature, The Global Historical Climatology Network: Long-Term Monthly Temperature, Precipitation, Sea Level Pressure, and Station Pressure Data (1992) (NDP-041) DOI: 10.3334/CDIAC/cli.ndp041 data Data PDF PDF File graphics NDP-041 Temperature Stations graphics NDP-041 Precipitation Stations Please note: the latest version of the Global Historical Climatology Network (GHCN) is available directly from NOAA's National Climatic Data Center. Investigators R. S. Vose, R. L. Schmoyer, P. M. Steurer, T. C. Peterson, R. Heim, T. R. Karl, and J. K. Eischeid This NDP contains monthly temperature, precipitation, sea-level pressure, and station-pressure data for thousands of meteorological stations worldwide. The database was compiled from pre-existing national, regional, and global collections of data as part of the Global Historical Climatology

205

Global Atlas for Solar and Wind Energy | 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 » Global Atlas for Solar and Wind Energy Jump to: navigation, search Tool Summary Name: Global Atlas for Solar and Wind Energy Agency/Company /Organization: International Renewable Energy Agency (IRENA) Sector: Energy Focus Area: Renewable Energy References: IRENA - Global Atlas[1] Overview "The Global Atlas for Solar and Wind Energy project aims to create a collaborative internet-based Geographic Information System (GIS) of these renewable resources that can direct and enhance cooperation on global scenarios and strategies and support decision-making, especially in areas

206

Estimation variationnelle robuste de mod`eles complexes de diffusion en IRM `a  

E-Print Network [OSTI]

internes c:Signal = diffusion macroscopique locale [LeBihan86] Fibres nerveuses [LeBihan95, Beaulieu98'ODF dans la direction u est d´efinie comme la projection radiale de la PDF de diffusion (u) = o P(u)d = P, 2007 9 / 26 #12;la Transform´e de Funk-Radon (FRT) La FRT (2) est une approximation de la vraie ODF (1

Brun, Chez Luc

207

Hierarchical 3D diffusion wavelet shape priors  

E-Print Network [OSTI]

In this paper, we propose a novel representation of prior knowledge for image segmentation, using diffusion wavelets that can reflect arbitrary continuous interdependencies in shape data. The application of diffusion ...

Langs, Georg

208

Efficient Stochastic Galerkin Methods For Random Diffusion ...  

E-Print Network [OSTI]

We discuss in this paper simulations of diffusion problems ... With PC/gPC serving as a complete basis to represent random processes, a stochastic Galerkin ... coupled diffusion equations, which can be readily written in a vector/

2008-09-16T23:59:59.000Z

209

MICROFLUIDIC CONTROL OF STEM CELL DIFFUSIBLE SIGNALING  

E-Print Network [OSTI]

MICROFLUIDIC CONTROL OF STEM CELL DIFFUSIBLE SIGNALING Katarina Blagovi, Lily Y. Kim, Alison M cell differentiation. KEYWORDS: Embryonic stem cells, microfluidic perfusion, diffusible signaling; they secrete molecules to which they respond. Microfluidics offers a potential solution to this challenge

Voldman, Joel

210

Diffusion stability of bubbles in a cluster  

Science Journals Connector (OSTI)

The diffusion stability of gas bubbles in one-fraction and two-fraction clusters ... gas concentrations in the liquid at which the bubble tends to one of two equilibrium states because of diffusion processes betw...

É. Sh. Nasibullaeva; I. Sh. Akhatov

2007-07-01T23:59:59.000Z

211

OXYGEN DIFFUSION IN UO2-x  

E-Print Network [OSTI]

~ K.C. K:i.m, "Oxygen Diffusion in Hypostoichiometricsystem for enriching uo 2 in oxygen-18 or for stoichiometry+nal of Nuclear Materials OXYGEN DIFFUSION IN U0 2 _:x K.C.

Kim, K.C.

2013-01-01T23:59:59.000Z

212

Relating chaos to deterministic diffusion of a molecule adsorbed on a surface  

E-Print Network [OSTI]

Chaotic internal degrees of freedom of a molecule can act as noise and affect the diffusion of the molecule on a substrate. A separation of time scales between the fast internal dynamics and the slow motion of the centre of mass on the substrate makes it possible to directly link chaos to diffusion. We discuss the conditions under which this is possible, and show that in simple atomistic models with pair-wise harmonic potentials, strong chaos can arise through the geometry. Using molecular-dynamics simulations, we demonstrate that a realistic model of benzene is indeed chaotic, and that the internal chaos affects the diffusion on a graphite substrate.

Astrid S. de Wijn; Annalisa Fasolino

2011-07-13T23:59:59.000Z

213

The transnational diffusion of global environmental concerns via INGOs in China : a new framework for understanding diffusion in authoritarian contexts  

E-Print Network [OSTI]

over the Nujiang hydropower dam project in Yunnan broughtare highly concentrated on hydropower development and waterRiver are the two major hydropower projects. Hydropower

Matsuzawa, Setsuko

2007-01-01T23:59:59.000Z

214

Heat Hyperbolic Diffusion in Planck Gas  

E-Print Network [OSTI]

In this paper we investigate the diffusion of the thermal pulse in Planck Gas. We show that the Fourier diffusion equation gives the speed of diffusion, v > c and breaks the causality of the thermal processes in Planck gas .For hyperbolic heat transport v

Miroslaw Kozlowski; Janina Marciak-Kozlowska

2006-07-06T23:59:59.000Z

215

Global nuclear material flow/control model  

SciTech Connect (OSTI)

This is the final report of a two-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The nuclear danger can be reduced by a system for global management, protection, control, and accounting as part of an international regime for nuclear materials. The development of an international fissile material management and control regime requires conceptual research supported by an analytical and modeling tool which treats the nuclear fuel cycle as a complete system. The prototype model developed visually represents the fundamental data, information, and capabilities related to the nuclear fuel cycle in a framework supportive of national or an international perspective. This includes an assessment of the global distribution of military and civilian fissile material inventories, a representation of the proliferation pertinent physical processes, facility specific geographic identification, and the capability to estimate resource requirements for the management and control of nuclear material. The model establishes the foundation for evaluating the global production, disposition, and safeguards and security requirements for fissile nuclear material and supports the development of other pertinent algorithmic capabilities necessary to undertake further global nuclear material related studies.

Dreicer, J.S.; Rutherford, D.S.; Fasel, P.K.; Riese, J.M.

1997-10-01T23:59:59.000Z

216

Advective diffusive/dispersive transport in geochemical processes  

SciTech Connect (OSTI)

Comprehensive understanding of chemical transport in response to fluid flow and diffusion in geologic processes requires thermodynamic and transport properties of a wide variety of aqueous species at the temperature and pressure of interest, as well as mass transfer computer codes that provide simultaneously for fluid flow, diffusion, dispersion, homogeneous chemical reactions, and mineral solubilities. As a result of research carried out with support from DOE in prior years of this grant, considerable progress has been made in developing computer codes to calculate advective-dispersive-diffusional transport at both high and low pressures and temperatures. These codes have become highly sophisticated, but their application to geochemical processes is limited by the availability of thermodynamic and transport data for the major solute species in the aqueous phase. Over the past three years, research has been directed primarily toward characterizing the thermodynamic behavior of concentrated supercritical aqueous electrolyte solutions and predicting the diffusion coefficients of organic species in oil field brines. Related research has been concerned with characterizing the growth rate of hydrothermal alteration zones and assessing the relative importance of aqueous diffusion and heterogeneous reactions at mineral surfaces in geochemical processes. 103 refs., 12 figs.

Helgeson, H.C.

1991-05-28T23:59:59.000Z

217

Global Insight Energy Group  

U.S. Energy Information Administration (EIA) Indexed Site

Outlook Outlook Mary Novak Managing Director IHS Global Insight Copyright © 2010 IHS Global Insight, Inc. Overview: Energy Sector Transformation Underway * The recession has hit energy demand hard, and aggregate energy demand is not expected to return to 2007 levels until 2018. * Oil and natural gas prices will both rise over the long-term, but the price trends will diverge with natural gas prices rising slowly due to the development of shale gas. * This forecast does not include a GHG cap-and-trade program. However, it is assumed that there will be continued improvement in equipment, appliance and building efficiencies that will reduce carbon emissions relative to past projections. * The forecast also includes the more than 30 state- level programs to increase efficiency and reduce

218

International Health Global Health Policy--------------------------------------------------------------------------------------  

E-Print Network [OSTI]

50 International Health Global Health Policy-------------------------------------------------------------------------------------- http://www.ghp.m.u-tokyo.ac.jp Our mission is to improve population health by enhancing accountability and improving evidence base of global (both domestic and international) health programmes through the provision

Miyashita, Yasushi

219

Gravitational waves, diffusion and decoherence  

E-Print Network [OSTI]

The quite different behaviors exhibited by microscopic and macroscopic systems with respect to quantum interferences suggest that there may exist a naturally frontier between quantum and classical worlds. The value of the Planck mass (22$\\mu$g) may lead to the idea of a connection between this borderline and intrinsic fluctuations of spacetime. We show that it is possible to obtain quantitative answers to these questions by studying the diffusion and decoherence mechanisms induced on quantum systems by gravitational waves generated at the galactic or cosmic scales. We prove that this universal fluctuating environment strongly affects quantum interferences on macroscopic systems, while leaving essentially untouched those on microscopic systems. We obtain the relevant parameters which, besides the ratio of the system's mass to Planck mass, characterize the diffusion constant and decoherence time. We discuss the feasibility of experiments aiming at observing these effects in the context of ongoing progress towar...

Reynaud, Serge; Jaekel, Marc-Thierry

2008-01-01T23:59:59.000Z

220

Nanoparticle Diffusion in Polymer Nanocomposites  

Science Journals Connector (OSTI)

Large-scale molecular dynamics simulations show that nanoparticle (NP) diffusivity in weakly interacting mixtures of NPs and polymer melts has two very different classes of behavior depending on their size. NP relaxation times and their diffusivities are completely described by the local, Rouse dynamics of the polymer chains for NPs smaller than the polymer entanglement mesh size. The motion of larger NPs, which are comparable to the entanglement mesh size, is significantly slowed by chain entanglements, and is not describable by the Stokes-Einstein relationship. Our results are in essentially quantitative agreement with a force-level generalized Langevin equation theory for all the NP sizes and chain lengths explored, and imply that for these lightly entangled systems, activated NP hopping is not important.

Jagannathan T. Kalathi; Umi Yamamoto; Kenneth S. Schweizer; Gary S. Grest; Sanat K. Kumar

2014-03-12T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Determination of effective water vapor diffusion coefficient in pemfc gas diffusion layers  

E-Print Network [OSTI]

route from the cathode catalyst layer to the cathode flow channels. Water can be removed from the cellDetermination of effective water vapor diffusion coefficient in pemfc gas diffusion layers Jacob M: Water vapor diffusion PEMFC Water management GDL Diffusivity MPL a b s t r a c t The primary removal

Kandlikar, Satish

222

Global Health: Disease Eradication  

Science Journals Connector (OSTI)

...have been considered as potential candidates for eradication, but the World Health Organization (WHO) has targeted only two other diseases for global eradication after smallpox. In 1986, WHO's policymaking body, the World Health Assembly, adopted the elimination of dracunculiasis (guinea worm disease)... The most cost-effective intervention for certain infectious diseases is to eliminate them entirely. This article reviews the characteristics of potentially eradicable diseases and surveys current eradication methods.

Hopkins D.R.

2013-01-03T23:59:59.000Z

223

Global climate feedbacks  

SciTech Connect (OSTI)

The important physical, chemical, and biological events that affect global climate change occur on a mesoscale -- requiring high spatial resolution for their analysis. The Department of Energy has formulated two major initiatives under the US Global Change Program: ARM (Atmospheric Radiation Measurements), and CHAMMP (Computer Hardware Advanced Mathematics and Model Physics). ARM is designed to use ground and air-craft based observations to document profiles of atmospheric composition, clouds, and radiative fluxes. With research and models of important physical processes, ARM will delineate the relationships between trace gases, aerosol and cloud structure, and radiative transfer in the atmosphere, and will improve the parameterization of global circulation models. The present GCMs do not model important feedbacks, including those from clouds, oceans, and land processes. The purpose of this workshop is to identify such potential feedbacks, to evaluate the uncertainties in the feedback processes (and, if possible, to parameterize the feedback processes so that they can be treated in a GCM), and to recommend research programs that will reduce the uncertainties in important feedback processes. Individual reports are processed separately for the data bases.

Manowitz, B.

1990-10-01T23:59:59.000Z

224

Is an Alternative Globalization Possible?  

E-Print Network [OSTI]

Global Democracy. 94. Amartya Sen, Development as Freedom (trump card. Recently, Amartya Sen’s “capability approach” 94

Evans, Peter

2009-01-01T23:59:59.000Z

225

2, 183201, 2005 Global terrestrial  

E-Print Network [OSTI]

, 1997). According to Watts (2000) and Kettle et al. (2002) total global sources and sinks are balancedBGD 2, 183­201, 2005 Global terrestrial COS sink strength L. Sandoval-Soto et al. Title Page Discussions is the access reviewed discussion forum of Biogeosciences Global uptake of carbonyl sulfide (COS

Paris-Sud XI, Université de

226

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

227

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.

228

Thinking about global climate change  

SciTech Connect (OSTI)

Opinions regarding issues related to global climate change are presented. The focus is on socioeconomic and historical aspects. World War II is discussed as an intellectual and emotional turning point in global issues, and global climate change is identified as a possible turning point of similar significance. Political, scientific, and public points of view regarding the issue are discussed.

Russell, M. [Univ. of Tennessee, Knoxville, TN (United States); [Oak Ridge National Lab., TN (United States)

1992-12-31T23:59:59.000Z

229

Electrochimica Acta 53 (2008) 55175522 Contents lists available at ScienceDirect  

E-Print Network [OSTI]

methanol fuel cells--Effect of anode diffusion media Fuqiang Liu1 , Chao-Yang Wang Departments of Materials March 2008 Keywords: Direct methanol fuel cell Anode microporous layer Water crossover Methanol crossover a b s t r a c t Various anode diffusion media have been experimentally studied to reduce water

Liu, Fuqiang

230

Independent Oversight Inspection, Portsmouth Gaseous Diffusion Plant -  

Broader source: Energy.gov (indexed) [DOE]

Portsmouth Gaseous Diffusion Portsmouth Gaseous Diffusion Plant - November 2006 Independent Oversight Inspection, Portsmouth Gaseous Diffusion Plant - November 2006 November 2006 Inspection of Emergency Management at the Portsmouth Gaseous Diffusion Plant The Secretary of Energy's Office of Independent Oversight, within the Office of Security and Safety Performance Assurance, conducted an inspection of the emergency management program at the Portsmouth Gaseous Diffusion Plant (PORTS) in August and September 2006. The coordination of emergency plans and procedures among USEC and DOE contractor organizations has successfully integrated the emergency management programs into a single cohesive program for the PORTS site. Other strengths include accurate hazards surveys that identify applicable

231

Directives Quarterly Updates  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Listings of new Justification Memoranda and new or revised Directives that have been posted to the DOE Directives, Delegations, and Requirements Portal. Updated quarterly.

232

Another face of DIRECT  

E-Print Network [OSTI]

authors, see for example, tree-Direct [5]. This paper ..... [4] J.M. Gablonsky, Modifications of the DIRECT Algorithm, Ph.D. Thesis, North Carolina State. University ...

chiter

2007-08-01T23:59:59.000Z

233

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

234

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

235

Global Climate Data, Sept. 18, 2000  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Climate Data Climate Data The ORNL DAAC announces the addition of "Global Monthly Climatology for the Twentieth Century (New et al.)" to its collection of climate data. The newest addition contains gridded data related to monthly surface climate over global land areas at 0.5-degree resolution. Precipitation, mean temperature, and diurnal temperature range are interpolated directly from station time-series. Wet-day frequency, vapor pressure, cloud cover, and ground-frost frequency are interpolated where data are available and estimated for regions with no data. Data can be accessed through an on-line interface that allows users to select the data by parameter and years. By agreement with the data provider, users who wish to request the complete 400-megabyte data set on a

236

Study Climate and Global Change  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

What We Study How We Study Prepare The Nation For Change Assess the U.S. Climate Make Our Science Accessible Link Climate Change & Health Provide Data and Tools Coordinate Internationally Study Climate and Global Change Print E-mail Deforestation What is global change? "Global change" refers to changes in the global environment that may alter the capacity of the Earth to sustain life. This includes alterations in: Climate Land productivity Oceans or other water resources Atmospheric chemistry Ecological systems Demographic and socioeconomic trends What is global change research? According to the Global Change Research Act of 1990, "Global change research" refers to the study, monitoring, assessment, prediction, and information management activities used to describe and understand the:

237

Global Scratch Upgrade in Progress  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Scratch Gets Global Scratch Gets an Upgrade Global Scratch Gets an Upgrade Improvements Will Include Higher Data Output Rates, Connection to PDSF October 29, 2013 The most used file system at the National Energy Research Scientific Computing Center (NERSC)-global scratch-just got an upgrade. As a result, some users may see their data output to global scratch reach up to 80 gigabytes per second. Although users will probably not see their 20-terabyte storage quotas increase, the upgrade ensures that global scratch remains flexible and paves the way for PDSF to eventually use the file system Because of the upgrade, users will also be able to better access their temporary data files or "scratch data" from any NERSC system, not just the one that generated it. Prior to the upgrade, Global scratch typically

238

Nonsnaking doubly diffusive convectons and the twist instability  

SciTech Connect (OSTI)

Doubly diffusive convection in a three-dimensional horizontally extended domain with a square cross section in the vertical is considered. The fluid motion is driven by horizontal temperature and concentration differences in the transverse direction. When the buoyancy ratio N = ?1 and the Rayleigh number is increased the conduction state loses stability to a subcritical, almost two-dimensional roll structure localized in the longitudinal direction. This structure exhibits abrupt growth in length near a particular value of the Rayleigh number but does not snake. Prior to this filling transition the structure becomes unstable to a secondary twist instability generating a pair of stationary, spatially localized zigzag states. In contrast to the primary branch these states snake as they grow in extent and eventually fill the whole domain. The origin of the twist instability and the properties of the resulting localized structures are investigated for both periodic and no-slip boundary conditions in the extended direction.

Beaume, Cédric, E-mail: ced.beaume@gmail.com; Knobloch, Edgar, E-mail: knobloch@berkeley.edu [Department of Physics, University of California, Berkeley, California 94720 (United States)] [Department of Physics, University of California, Berkeley, California 94720 (United States); Bergeon, Alain, E-mail: alain.bergeon@imft.fr [Université de Toulouse, INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse), Allée Camille Soula, F-31400 Toulouse, France and CNRS, IMFT, F-31400 Toulouse (France)] [Université de Toulouse, INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse), Allée Camille Soula, F-31400 Toulouse, France and CNRS, IMFT, F-31400 Toulouse (France)

2013-11-15T23:59:59.000Z

239

The Global Energy Challenge  

ScienceCinema (OSTI)

The expected doubling of global energy demand by 2050 challenges our traditional patterns of energy production, distribution and use.   The continued use of fossil fuels raises concerns about supply, security, environment and climate.  New routes are needed for the efficient conversion of energy from chemical fuel, sunlight, and heat to electricity or hydrogen as an energy carrier and finally to end uses like transportation, lighting, and heating. Opportunities for efficient new energy conversion routes based on nanoscale materials will be presented, with emphasis on the sustainable energy technologies they enable.

George Crabtree

2010-01-08T23:59:59.000Z

240

The Global Energy Challenge  

SciTech Connect (OSTI)

The expected doubling of global energy demand by 2050 challenges our traditional patterns of energy production, distribution and use.   The continued use of fossil fuels raises concerns about supply, security, environment and climate.  New routes are needed for the efficient conversion of energy from chemical fuel, sunlight, and heat to electricity or hydrogen as an energy carrier and finally to end uses like transportation, lighting, and heating. Opportunities for efficient new energy conversion routes based on nanoscale materials will be presented, with emphasis on the sustainable energy technologies they enable.

George Crabtree

2007-09-12T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Towards efficient interface conditions for a Schwarz domain decomposition algorithm for an advection equation with biharmonic diffusion  

Science Journals Connector (OSTI)

This paper addresses the problem of deriving efficient interface conditions for solving biharmonic diffusion-advection equations using a Schwarz global-in-time domain decomposition algorithm. General interface conditions are proposed, which lead to well-posed ... Keywords: Biharmonic operator, Domain decomposition methods, Optimized conditions

Elise Nourtier-Mazauric; Eric Blayo

2010-01-01T23:59:59.000Z

242

Diffusion of low-carbon technologies and the feasibility of long-term climate targets  

Science Journals Connector (OSTI)

Abstract Stabilizing the global climate will require large-scale global deployment of low-carbon technologies. Even in the presence of aggressive climate policies, however, the diffusion of such technologies may be limited by several institutional, behavioral, and social factors. In this paper, we review the literature on the sources of such diffusion constraints, and explore the potential implications of such constraints based on the GCAM integrated assessment model. Our analysis highlights that factors that limit technology deployment may have sizeable impacts on the feasibility and mitigation costs of achieving stringent stabilization targets. And such impacts are greatly amplified with major delays in serious climate policies. The results generally indicate that constraints on the expansions of CCS and renewables are more costly than those on nuclear or bioenergy, and jointly constraining these technologies leaves some scenarios infeasible.

Gokul Iyer; Nathan Hultman; Jiyong Eom; Haewon McJeon; Pralit Patel; Leon Clarke

2013-01-01T23:59:59.000Z

243

Comparative study of methods used to estimate ionic diffusion coefficients using migration tests  

SciTech Connect (OSTI)

Ionic diffusion coefficients are estimated rapidly using electromigration tests. In this paper, electromigration tests are accurately simulated by numerically solving the Nernst-Planck (NP) equation (coupled with the electroneutrality condition (EN)) using the finite element method. Numerical simulations are validated against experimental data obtained elsewhere [E. Samson, J. Marchand, K.A. Snyder, Calculation of ionic diffusion coefficients on the basis of migration test results, Materials and Structures/Materiaux et Constructions 36 (257) (2003) 156-165., H. Friedmann, O. Amiri, A. Ait-Mokhtar, A direct method for determining chloride diffusion coefficient by using migration test, Cement and Concrete Research 34 (11) (2004) 1967-1973.]. It is shown that migration due to the non-linear electric potential completely overwhelms diffusion due to concentration gradients. The effects of different applied voltage differences and chloride source concentrations on estimations of chloride diffusion coefficients are explored. We show that the pore fluid within concrete and mortar specimens generally differs from the curing solution, lowering the apparent diffusion coefficient, primarily due to interactions of chloride ions with other ions in the pore fluid. We show that the variation of source chloride concentration strongly affects the estimation of diffusion coefficients in non-steady-state tests; however this effect vanishes under steady-state conditions. Most importantly, a comparison of diffusion coefficients obtained from sophisticated analyses (i.e., NP-EN) and a variety of commonly used simplifying methods to estimate chloride diffusion coefficients allows us to identify those methods and experimental conditions where both approaches deliver good estimates for chloride diffusion coefficients. Finally, we demonstrate why simultaneous use and monitoring of current density and fluxes are recommended for both the non-steady and steady-state migration tests.

Narsilio, G.A. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia)], E-mail: narsilio@unimelb.edu.au; Li, R. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia); Institute of Geotechnical Engineering, Southeast University (SEU), Nanjing, Jiangsu (China)], E-mail: lirenmin@seu.edu.cn; Pivonka, P. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia)], E-mail: ppivonka@unimelb.edu.au; Smith, D.W. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia)], E-mail: david.smith@unimelb.edu.au

2007-08-15T23:59:59.000Z

244

Foreign Direct Investment  

Gasoline and Diesel Fuel Update (EIA)

Investment Investment Foreign Direct Investment Foreign Direct Investment Foreign Direct Investment in U.S. Energy in U.S. Energy in U.S. Energy in U.S. Energy in 1999 in 1999 in 1999 in 1999 June 2001 ii iii Contents Foreign Affiliates' Role in U.S. Energy Industry Operations ..............................................................................1 Foreign Direct Investment: The International Transactions Accounts ..............................................................8 U.S. Companies' Direct Investment Abroad in Energy ......................................................................................14 Conclusion...............................................................................................................................................................19

245

Scaled Brownian motion: a paradoxical process with a time dependent diffusivity for the description of anomalous diffusion  

E-Print Network [OSTI]

Anomalous diffusion is frequently described by scaled Brownian motion (SBM), a Gaussian process with a power-law time dependent diffusion coefficient. Its mean squared displacement is $\\langle x^2(t)\\rangle\\simeq\\mathscr{K}(t)t$ with $\\mathscr{K}(t)\\simeq t^{\\alpha-1}$ for $0does not exhibit a significant amplitude scatter of the time averaged mean squared displacement. More severely, we demonstrate that under confinement, the dynamics encoded by SBM is fundamentally different from both fractional Brownian motion and continuous time random walks. SBM is highly non-stationary and cannot provide a physical description for particles in a thermalised stationary system. Our findings have direct impact on the modelling of single particle tracking experiments, in particu...

Jeon, J -H; Metzler, R

2014-01-01T23:59:59.000Z

246

Directional solvent extraction desalination  

E-Print Network [OSTI]

World water supply is struggling to meet demand. Production of fresh water from the oceans could supply this demand almost indefinitely. As global energy consumption continues to increase, water and energy resources are ...

Bajpayee, Anurag

2012-01-01T23:59:59.000Z

247

Lattice Boltzmann model for the bimolecular autocatalytic reaction–diffusion equation  

Science Journals Connector (OSTI)

Abstract A lattice Boltzmann model for the bimolecular autocatalytic reaction–diffusion equation is proposed. By using multi-scale technique and the Chapman–Enskog expansion on complex lattice Boltzmann equation, we obtain a series of complex partial differential equations, complex equilibrium distribution function and its complex moments. Then, the complex reaction–diffusion equation is recovered with higher-order accuracy of the truncation error. This equation can be used to describe the bimolecular autocatalytic reaction–diffusion systems, in which a rich variety of behaviors have been observed. Based on this model, the Fitzhugh–Nagumo model and the Gray–Scott model are simulated. The comparisons between the LBM results and the Alternative Direction Implicit results are given in detail. The numerical examples show that assumptions of source term can be used to raise the accuracy of the truncation error of the lattice Boltzmann scheme for the complex reaction–diffusion equation.

Jianying Zhang; Guangwu Yan

2014-01-01T23:59:59.000Z

248

Characterizing unsaturated diffusion in porous tuff gravel  

SciTech Connect (OSTI)

Evaluation of solute diffusion in unsaturated porous gravel is very important for investigations of contaminant transport and remediation, risk assessment, and waste disposal (for example, the potential high-level nuclear waste repository at Yucca Mountain, Nevada). For a porous aggregate medium such as granular tuff, the total water content is comprised of surface water and interior water. The surface water component (water film around grains and pendular water between the grain contacts) could serve as a predominant diffusion pathway. To investigate the extent to which surface water films and contact points affect solute diffusion in unsaturated gravel, we examined the configuration of water using x-ray computed tomography in partially saturated gravel, and made quantitative measurements of diffusion at multiple water contents using two different techniques. In the first, diffusion coefficients of potassium chloride in 2-4 mm granular tuff at multiple water contents were calculated from electrical conductivity measurements using the Nernst-Einstein equation. In the second, we used laser ablation with inductively coupled plasma-mass spectrometry to perform micro-scale mapping, allowing the measurement of diffusion coefficients for a mixture of chemical tracers for tuff cubes and tetrahedrons having two contact geometries (cube-cube and cube-tetrahedron). The x-ray computed tomography images show limited contact between grains, and this could hinder the pathways for diffusive transport. Experimental results show the critical role of surface water in controlling transport pathways and hence the magnitude of diffusion. Even with a bulk volumetric water content of 1.5%, the measured solute diffusion coefficient is as low as 1.5 x 10{sup -14} m{sup 2}/s for tuff gravel. Currently used diffusion models relating diffusion coefficients to total volumetric water content inadequately describe unsaturated diffusion behavior in porous gravel at very low water contents.

Hu, Qinhong; Kneafsey, Timothy J.; Roberts, Jeffery J.; Tomutsa, Liviu; Wang, Joseph, S.Y.

2003-11-12T23:59:59.000Z

249

Space sensors for global change  

SciTech Connect (OSTI)

Satellite measurements should contribute to a fuller understanding of the physical processes behind the radiation budget, exchange processes, and global change. Climate engineering requires global observation for early indications of predicted effects, which puts a premium on affordable, distributed constellations of satellites with effective, affordable sensors. Defense has a requirement for continuous global surveillance for warning of aggression, which could evolve from advanced sensors and satellites in development. Many climate engineering needs match those of defense technologies.

Canavan, G.H.

1994-02-15T23:59:59.000Z

250

Global Threat Reduction Initiative  

Broader source: Energy.gov (indexed) [DOE]

Nonproliferation Nonproliferation U.S. DEPARTMENT OF ENERGY 1 The Current Status of Gap and U.S.-Origin Nuclear Fuel Removals 2011 Jeff Galan, Deputy Project Manager U.S.-Origin Nuclear Remove Program National Nuclear Security Administration Global Threat Reduction Initiative Defense Nuclear Nonproliferation U.S. DEPARTMENT OF ENERGY 2 GTRI Mission and Goals GTRI is: A part of President Obama's comprehensive strategy to prevent nuclear terrorism; and The key organization responsible for implementing the U.S. HEU minimization policy. GTRI MISSION Reduce and protect vulnerable nuclear and radiological material located at civilian sites worldwide. DOE STRATEGIC GOAL 2.2 Prevent the acquisition of nuclear and radiological materials for use in weapons of mass destruction and other

251

Diffusion in Porous Catalysts and Adsorbents  

Science Journals Connector (OSTI)

Diffusion in Porous Catalysts and Adsorbents ... Single industrial adsorbent pellets of zeolites 5A and 13X were mounted with a polymer capable of withstanding high temperatures. ...

Jan Hoogschagen

1955-01-01T23:59:59.000Z

252

Self-Similar Modes of Coherent Diffusion  

E-Print Network [OSTI]

Self-similar solutions of the coherent diffusion equation are derived and measured. The set of real similarity solutions is generalized by the introduction of a nonuniform phase surface, based on the elegant Gaussian modes of optical diffraction. In an experiment of light storage in a gas of diffusing atoms, a complex initial condition is imprinted, and its diffusion dynamics is monitored. The self-similarity of both the amplitude and the phase pattern is demonstrated, and an algebraic decay associated with the mode order is measured. Notably, as opposed to a regular diffusion spreading, a self-similar contraction of a special subset of the solutions is predicted and observed.

O. Firstenberg; P. London; D. Yankelev; R. Pugatch; M. Shuker; N. Davidson

2010-08-16T23:59:59.000Z

253

Pipe diffusion at dislocations in UO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the fuel grain. Dislo- cations may also provide pathways for enhanced diffusion of fis- sion products, in particular, dislocations pinned to fission product precipitates may...

254

The Diffusion of GIS in Journalism.  

E-Print Network [OSTI]

??The purposes of this study were to determine the likelihood of reporters to adopt Geographical Information Systems and to predict the future of the diffusion… (more)

Wasike, Ben S.

2005-01-01T23:59:59.000Z

255

ARM - Measurement - Shortwave narrowband diffuse downwelling...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

: Shortwave narrowband diffuse downwelling irradiance The rate at which radiant energy in narrow bands of wavelengths shorter than approximately 4 mum, that has been...

256

Portsmouth Gaseous Diffusion Plant | Department of Energy  

Energy Savers [EERE]

Gaseous Diffusion Plant. March 26, 2010 Enforcement Letter, Geiger Brothers Mechanical Contractors, INC - March 26, 2010 Issued to Geiger Brothers Mechanical Contractors,...

257

Enforcement Documents - Portsmouth Gaseous Diffusion Plant |...  

Broader source: Energy.gov (indexed) [DOE]

Gaseous Diffusion Plant March 26, 2010 Enforcement Letter, Geiger Brothers Mechanical Contractors, INC - March 26, 2010 Issued to Geiger Brothers Mechanical Contractors,...

258

Independent Activity Report, Portsmouth Gaseous Diffusion Plant...  

Broader source: Energy.gov (indexed) [DOE]

2011 August 2011 Orientation Visit to the Portsmouth Gaseous Diffusion Plant HIAR-PORTS-2011-08-03 This Independent Activity Report documents an operational awareness...

259

Fully nonlinear equations for nonlocal diffusions  

E-Print Network [OSTI]

in collaboration with Luis Silvestre, we developed the parallel theory in the case of discontinuous (Levy type) diffusion. I plan to present the main steps.

2009-05-25T23:59:59.000Z

260

Video STM Studies of Adsorbate Diffusion at Electrochemical Interfaces  

Science Journals Connector (OSTI)

Direct in situ studies of the surface diffusion of isolated adsorbates at an electrochemical interface by high-speed scanning tunneling microscopy (video STM) are presented for sulfide adsorbates on Cu(100) in HCl solution. As revealed by a quantitative statistical analysis, the adsorbate motion can be described by thermally activated hopping between neighboring adsorption sites with an activation energy that increases linearly with electrode potential by 0.50 eV per V. This can be explained by changes in the adsorbate dipole moment during the hopping process and contributions from coadsorbates.

T. Tansel and O. M. Magnussen

2006-01-19T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Perihelion Global | Open Energy Information  

Open Energy Info (EERE)

focused on the acquisition, development and management of technologies and assets in the energy, natural resource and communications markets. References: Perihelion Global1 This...

262

Global Scratch Upgrade in Progress  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the facility is now positioned to meet the performance demands of all its clusters. By upgrading the consolidated Global Scratch, users will be able to continue taking advantage...

263

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

264

Direct/Indirect Costs  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This chapter provides recommended categories for direct and indirect elements developed by the Committee for Cost Methods Development (CCMD) and describes various estimating techniques for direct and indirect costs.

1997-03-28T23:59:59.000Z

265

Global tracking control of underactuated ships with nonzero off-diagonal terms in their system matrices  

Science Journals Connector (OSTI)

A methodology is proposed to design a controller that forces position and orientation of underactuated ships to globally track a reference trajectory. The ships under consideration are not actuated in the sway direction, and the mass and damping matrices ... Keywords: Global tracking control, Nonzero off-diagonal terms, System matrices, Underactuated ships

K. D. Do; J. Pan

2005-01-01T23:59:59.000Z

266

The geodesic rule for higher codimensional global defects  

E-Print Network [OSTI]

We generalize the geodesic rule to the case of formation of higher codimensional global defects. Relying on energetic arguments, we argue that, for such defects, the geometric structures of interest are the totally geodesic submanifolds. On the other hand, stochastic arguments lead to a diffusion equation approach, from which the geodesic rule is deduced. It turns out that the most appropriate geometric structure that one should consider is the convex hull of the values of the order parameter on the causal volumes whose collision gives rise to the defect. We explain why these two approaches lead to similar results when calculating the density of global defects by using a theorem of Cheeger and Gromoll. We present a computation of the probability of formation of strings/vortices in the case of a system, such as nematic liquid crystals, whose vacuum is $\\mathbb{R}P^2$.

Anthony J. Creaco; Nikos Kalogeropoulos

2008-05-15T23:59:59.000Z

267

A radially resolved kinetic model for nonlocal electron ripple diffusion losses in tokamaks  

SciTech Connect (OSTI)

A relatively simple radially resolved kinetic model is applied to the ripple diffusion problem for electrons in tokamaks. The distribution function f(r,v) is defined on a two-dimensional grid, where r is the radial coordinate and v is the velocity coordinate. Particle transport in the radial direction is from ripple and banana diffusion and transport in the velocity direction is described by the Fokker-Planck equation. Particles and energy are replaced by source functions that are adjusted to maintain a constant central density and temperature. The relaxed profiles of f(r,v) show that the electron distribution function at the wall contains suprathermal electrons that have diffused from the interior that enhance ripple transport. The transport at the periphery is therefore nonlocal. The energy replacement times from the computational model are near to the experimental replacement times for tokamak discharges in the compilation by Pfeiffer and Waltz [Nucl. Fusion 19, 51 (1979)].

Robertson, Scott [Department of Physics and Center for Integrated Plasma Studies, University of Colorado, Boulder, Colorado 80309-0390 (United States)

2006-09-15T23:59:59.000Z

268

Turbine exhaust diffuser with a gas jet producing a coanda effect flow control  

DOE Patents [OSTI]

An exhaust diffuser system and method for a turbine engine includes an inner boundary and an outer boundary with a flow path defined therebetween. The inner boundary is defined at least in part by a hub structure that has an upstream end and a downstream end. The outer boundary may include a region in which the outer boundary extends radially inward toward the hub structure and may direct at least a portion of an exhaust flow in the diffuser toward the hub structure. The hub structure includes at least one jet exit located on the hub structure adjacent to the upstream end of the tail cone. The jet exit discharges a flow of gas substantially tangential to an outer surface of the tail cone to produce a Coanda effect and direct a portion of the exhaust flow in the diffuser toward the inner boundary.

Orosa, John; Montgomery, Matthew

2014-02-11T23:59:59.000Z

269

Turbine exhaust diffuser with region of reduced flow area and outer boundary gas flow  

DOE Patents [OSTI]

An exhaust diffuser system and method for a turbine engine. The outer boundary may include a region in which the outer boundary extends radially inwardly toward the hub structure and may direct at least a portion of an exhaust flow in the diffuser toward the hub structure. At least one gas jet is provided including a jet exit located on the outer boundary. The jet exit may discharge a flow of gas downstream substantially parallel to an inner surface of the outer boundary to direct a portion of the exhaust flow in the diffuser toward the outer boundary to effect a radially outward flow of at least a portion of the exhaust gas flow toward the outer boundary to balance an aerodynamic load between the outer and inner boundaries.

Orosa, John

2014-03-11T23:59:59.000Z

270

Directives System Manual  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Manual provides detailed requirements to supplement DOE O 251.1A, Directives System, dated 1-30-98.

1998-01-30T23:59:59.000Z

271

IUTAM symposium on hydrodynamic diffusion of suspended particles  

SciTech Connect (OSTI)

Hydrodynamic diffusion refers to the fluctuating motion of nonBrownian particles (or droplets or bubbles) which occurs in a dispersion due to multiparticle interactions. For example, in a concentrated sheared suspension, particles do not move along streamlines but instead exhibit fluctuating motions as they tumble around each other. This leads to a net migration of particles down gradients in particle concentration and in shear rate, due to the higher frequency of encounters of a test particle with other particles on the side of the test particle which has higher concentration or shear rate. As another example, suspended particles subject to sedimentation, centrifugation, or fluidization, do not generally move relative to the fluid with a constant velocity, but instead experience diffusion-like fluctuations in velocity due to interactions with neighboring particles and the resulting variation in the microstructure or configuration of the suspended particles. In flowing granular materials, the particles interact through direct collisions or contacts (rather than through the surrounding fluid); these collisions also cause the particles to undergo fluctuating motions characteristic of diffusion processes. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

Davis, R.H. [ed.

1995-12-31T23:59:59.000Z

272

Modelling international wind energy diffusion: Are the patterns of induced diffusion `S'  

E-Print Network [OSTI]

Modelling international wind energy diffusion: Are the patterns of induced diffusion `S' shaped datasets, the paper explores the patterns of international wind energy diffusion in OECD countries. The model employed in the paper predicted that wind energy, as a complex and expensive innovation, would

Feigon, Brooke

273

On molecular transport effects in real gas laminar diffusion flames at large pressure  

Science Journals Connector (OSTI)

Direct numerical simulations are conducted of unsteady exothermic and one-dimensional laminar diffusionflames at large pressures. The simulations are used to assess the impact of molecular diffusion and real gas effects under high pressure conditions with simplified chemical kinetics. The formulation includes the fully compressible form of the governing equations real gas effects modeled by the cubic Peng–Robinson equation of state and a generalized form of the Soret and Dufour mass and heat diffusion vectors derived from nonequilibrium thermodynamics and fluctuation theory. The cross diffusion fluxes are derived for a ternary species system and include the effects of both heat and mass diffusion in the presence of temperature concentration and pressure gradients (i.e. Soret and Dufour diffusion). The ternary species formulation is applied to a simplified single step reaction elucidating molecular and thermodynamic effects apparent in general combustion. Realistic models for pressure temperature and species dependent heat capacities viscosities thermal conductivities and mass diffusivities are also included. Three different model reactions are simulated both including and neglecting Soret and Dufour cross diffusion. The simulation results show that Soret and Dufour effects are negligible for reactions comprised of species with equal or near equal molecular weights. However Soret diffusion effects are apparent when species with nonequal molecular weights are involved in the reaction and result in reductions of the peak flame temperature. In addition it is shown that neglect of cross diffusion leads to deviations in the predicted flame thicknesses with under predictions for a hydrogen-oxygen system and over predictions for a heavy hydrocarbon reaction. These effects are explained in detail through examinations of the individual heat and mass flux vectors as well as through associated thermodynamic properties. A parametric study addresses the effects of the ambient pressure the initial “flame Reynolds number ” the Damkohler number and the heat release parameter.

Sridhar Palle; Christopher Nolan; Richard S. Miller

2005-01-01T23:59:59.000Z

274

Unsynchronized Translational and Rotational Diffusion of Nanocargo on a Living Cell Membrane  

SciTech Connect (OSTI)

A robust high-speed and high-precision single nanoparticle translational and rotational tracking method has been developed to directly monitor the interactions between transferrin-modified nanocargos (gold nanorods) and the membrane proteins prior to endocytosis. This approach shows that the translational and rotational diffusions of nanocargos on living cell membranes are unsynchronized in space and in time.

Xiao, Lehui; Wei, Lin; Liu, Chang; He, Yan; Yeung, Edward

2012-03-16T23:59:59.000Z

275

CHILLING CONSIDERATIONS ABOUT GLOBAL WARMING  

E-Print Network [OSTI]

.time.com #12;NEW ORLEANS www.time.com #12;ALASKA www.time.com #12;UPSALA GLACIER, ANDES, ARGENTINA 1928 2004;ATMOSPHERIC RADIATION Energy per area per time Power per area Unit: Watt per square meter W m-2 #12;GLOBAL ENERGY BALANCE Global and annual average energy fluxes in watts per square meter 343 237 237 254K 390

Schwartz, Stephen E.

276

GLOBAL IMPACT FROM THE HEART  

E-Print Network [OSTI]

GLOBAL IMPACT FROM THE HEART OF NORTHERN IRELAND #12;A first-class student experience in world-CLASS 18 CONTACT 26 CONTENTS 3GLOBAL IMPACT FROM THE HEART OF NORTHERN IRELAND #12;Queen's is a powerhouse THE HEART OF NORTHERN IRELANDGLOBAL IMPACT FROM THE HEART OF NORTHERN IRELAND CHANCELLOR'S WELCOME

Paxton, Anthony T.

277

GLOBAL IMPACT FROM THE HEART  

E-Print Network [OSTI]

GLOBAL IMPACT FROM THE HEART OF NORTHERN IRELAND #12;#12;CHANCELLOR'S WELCOME 4 VICE: INNOVATIVE AND WORLD-CLASS 18 CONTACT 26 CONTENTS 3GLOBAL IMPACT FROM THE HEART OF NORTHERN IRELAND #12;Queen THE HEART OF NORTHERN IRELANDGLOBAL IMPACT FROM THE HEART OF NORTHERN IRELAND CHANCELLOR'S WELCOME

Müller, Jens-Dominik

278

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.

279

Neoclassical diffusion in a turbulent plasma  

SciTech Connect (OSTI)

This work describes a new approach to plasma transport where the toroidal drift motion is considered as a perturbation to the fluctuating velocity. Percolation theory is used to determine the scaling of the diffusion coefficient. Several neoclassical phenomena should persist even when diffusion is enhanced from neoclassical predictions. Numerical simulation results support the theoretical scaling arguments.

Yushmanov, P. [Gosudarstvennyj Komitet po Ispol`zovaniyu Atomnoj Ehnergii SSSR, Moscow (USSR). Inst. Atomnoj Ehnergii]|[Texas Univ., Austin, TX (United States). Inst. for Fusion Studies

1991-11-01T23:59:59.000Z

280

ANISOTROPIC DIFFUSION USING POWER WATERSHEDS Camille Couprie  

E-Print Network [OSTI]

optimal methods such as graph cuts have received a lot of attention. However not all problems in com are able to optimize this energy quickly and effectively. This study paves the way for using the power and the diffusion time. Practical usage of anisotropic diffusion requires a choice between long compu- tation times

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "global direct diffuse" 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
to obtain the most current and comprehensive results.


281

Diffusive limit for the random Lorentz gas  

E-Print Network [OSTI]

We review some recent results concerning the derivation of the diffusion equation and the validation of Fick's law for the microscopic model given by the random Lorentz Gas. These results are achieved by using a linear kinetic equation as an intermediate level of description between our original mechanical system and the diffusion equation.

Alessia Nota

2014-10-14T23:59:59.000Z

282

Educational Global Climate Change Links  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Educational Global Climate Change Links Educational Global Climate Change Links Evidence of the importance of global climate change to the future generation is reflected in the increasing number of queries CDIAC receives from students and educators, from a range of educational levels. We have compiled a listing of some sites that we hope will be of interest and of use to those looking for information, fun, ideas, and ways that they can make a difference. These links were chosen because we have found them useful in responding to those with inquiring minds. These links will take the user outside of CDIAC, and are by no means comprehensive. We are not responsible for the content or intent of these outside links. Tools you can use! NOAA's Global Climate Dashboard - The Global Climate Dashboard is

283

Frequently Asked Global Change Questions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Asked Global Change Questions Asked Global Change Questions This page lists global change questions that have been received at CDIAC and the answers that were provided to a diverse audience. If you have a question relating to carbon dioxide and global change and cannot find the answer you need here, you can "Ask Us a Question", and we will be glad to try to help you. Questions Should we grow trees to remove carbon in the atmosphere? What are the present tropospheric concentrations, global warming potentials (100 year time horizon), and atmospheric lifetimes of CO2, CH4, N2O, CFC-11, CFC-12, CFC-113, CCl4, methyl chloroform, HCFC-22, sulphur hexafluoride, trifluoromethyl sulphur pentafluoride, perfluoroethane, and surface ozone? Where can I find information on the naming of halocarbons?

284

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant -  

Broader source: Energy.gov (indexed) [DOE]

Portsmouth Gaseous Diffusion Plant Portsmouth Gaseous Diffusion Plant - November 2013 Independent Oversight Review, Portsmouth Gaseous Diffusion Plant - November 2013 November 5, 2013 Review of Preparedness for Severe Natural Phenomena Events at the Portsmouth Gaseous Diffusion Plant This report documents the results of an independent oversight review of the preparedness of the DOE Portsmouth/Paducah Project Office, contractors at the DOE Portsmouth Gaseous Diffusion Plant, and selected non-leased facilities to respond to a severe natural phenomena event (NPE). The review was conducted in July and August 2013 by the U.S. Department of Energy's (DOE) Office of Safety and Emergency Management Evaluations, which is within the DOE Office of Health, Safety and Security (HSS). The HSS Office of Safety and Emergency Management Evaluations performed this

285

Nuclear diffuseness as a degree of freedom  

Science Journals Connector (OSTI)

The response of the nuclear energy to changes in neutron and proton surface diffusenesses is investigated using the Thomas-Fermi model. Algebraic expressions are provided for the energy cost of changing the two diffusenesses away from their equilibrium values. This will make it possible to generalize the macroscopic-microscopic calculations of nuclear masses and deformation energies by the inclusion of the neutron and proton diffusenesses as degrees of freedom (to be varied along with the shape degrees of freedom). One result, which is suggested by the relatively low cost in macroscopic energy of increasing the diffuseness of a heavy nucleus by 10% (about 4 MeV), is that superheavy nuclei near Z=126,?N=184 may have a fair chance of becoming stabilized by shell effects. An appendix introduces an improved measure of surface diffuseness, with certain advantages over the conventional Süssmann width b.

W. D. Myers and W. J. ?wia?tecki

1998-12-01T23:59:59.000Z

286

Definition: Direct normal irradiance | Open Energy Information  

Open Energy Info (EERE)

normal irradiance normal irradiance (Redirected from Definition:DNI) Jump to: navigation, search Dictionary.png Direct normal irradiance the amount of solar radiation received per unit area by a surface perpendicular (normal) to the rays that come in a straight line from the direction of the sun at its current position in the sky.[1] Also Known As DNI Related Terms Solar radiation, Irradiance, Concentrating solar power, Global horizontal irradiance References ↑ http://www.3tier.com/en/support/glossary/#dni Retrie LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ved from "http://en.openei.org/w/index.php?title=Definition:Direct_normal_irradiance&oldid=423379" Category: Definitions What links here Related changes Special pages Printable version Permanent link

287

Globally Collaborative Environmental Peach Gaming with Global University Systems Globally Collaborative Environmental Peace  

E-Print Network [OSTI]

and figures." To realize this, I worked on the proliferations of data telecom infrastructure and email to various countries, and demonstration and testing of hybrid technologies with "Global Lecture Hall (GLH will supply game players from around the world. With global GRID computer networking technology and Beowulf

Paris-Sud XI, Université de

288

Cancellation of Directives  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Effective immediately SEN-17-90, Coordination of Global Climate Change Activities, dated 2-20-90; and SEN-19A-92, Department of Energy Executive Committee, dated 7-7-92 are canceled. Cancels SEN-17-90, SEN-19A-92.

2009-08-26T23:59:59.000Z

289

Global production through 2005  

SciTech Connect (OSTI)

Two companion studies released recently should provide great food for thought among geo-political strategists and various national governments. If predictions contained in these Petroconsultants studies of oil and gas production trends for the next 10 years are realized, there will be great repercussions for net exporters and importers, alike. After analyzing and predicting trends within each of the world`s significant producing nations for the 1996--2005 period, the crude oil and condensate report concludes tat global production will jump nearly 24%. By contrast, worldwide gas output will leap 40%. The cast of characters among producers and exporters that will benefit from these increases varies considerably for each fuel. On the oil side, Russia and the OPEC members, particularly the Persian Gulf nations, will be back in the driver`s seat in terms of affecting export and pricing patterns. On the gas side, the leading producers will be an interesting mix of mostly non-OPEC countries. The reemergence of Persian Gulf oil producers, coupled with an anticipated long-term decline among top non-OPEC producing nations should present a sobering picture to government planners within large net importers, such as the US. They are likely to find themselves in much the same supply trap as was experienced in the 1970s, only this time the dependence on foreign oil supplies will be much worse. Gas supplies will not be similarly constrained, and some substitution for oil is probable. Here, two articles, ``World oil industry is set for transition`` and ``Worldwide gas surges forward in next decade,`` present a summary of the findings detailed in Petroconsultants` recent studies.

Foreman, N.E. [Petroconsultants, Inc., Houston, TX (United States)

1996-12-01T23:59:59.000Z

290

Departmental Directives Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To define requirements and responsibilities for implementing the Department of Energy (DOE) Directives Program in support of the Secretary's memorandum of September 10, 2007, Principles Governing Departmental Directives. See also the current list of Directives Requiring Further Documentation, as required by Appendix D of this Order. Cancels DOE P 251.1A, DOE O 251.1B, DOE M 251.1-1B.

2007-09-10T23:59:59.000Z

291

GE Global Research in San Ramon, California | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and the world. Visit the Careers page to search and apply for Global Research jobs in San Ramon. We also welcome robust participation in our work from a range of science...

292

Optoelectronic switches based on diffusive conduction Hilmi Volkan Demira  

E-Print Network [OSTI]

Optoelectronic switches based on diffusive conduction Hilmi Volkan Demira and Fatih Hakan Koklu the process of diffusive conduction that we use in our optoelectronic switches to achieve rapid optical. We demonstrate the feasibility of using such diffusive conductive optoelectronic switches

Miller, David A. B.

293

Directives System Manual  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Manual provides detailed requirements to supplement DOE O 251.1, which establishes requirements for the development, coordination, and sunset review of DOE directives.

1995-10-16T23:59:59.000Z

294

Departmental Directives Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish directives as the primary means to set, communicate, and institutionalize policies, requirements, responsibilities, and procedures for Departmental elements and contractors.

2014-10-16T23:59:59.000Z

295

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

296

Resisting globalization- ATTAC in France: local discourses, global terrain  

E-Print Network [OSTI]

, social movements in France appeared to run out of raison d??tre, as enthusiasm for collective action gave away to a new individualism and, the Left, which was in power, along with the country itself started to confront the effects of a deregulated... RESISTING GLOBALIZATION ATTAC IN FRANCE: LOCAL DISCOURSES, GLOBAL TERRAIN A Dissertation by MARIE DES NEIGES LEONARD Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

Leonard, Marie des Neiges

2007-04-25T23:59:59.000Z

297

Impact of mesophyll diffusion on estimated global land CO2 fertilization  

Science Journals Connector (OSTI)

...historical atmospheric CO2 by Earth system models. Without this correction...limitation. Our results imply that Earth system models (ESMs) will overpredict the long-term...atmospheric carbon dioxide biases in Earth System Models . J Geophys Res Biogeosci 119 ( 2 ): 141...

Ying Sun; Lianhong Gu; Robert E. Dickinson; Richard J. Norby; Stephen G. Pallardy; Forrest M. Hoffman

2014-01-01T23:59:59.000Z

298

Metal MEMS Devices | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MEMS: Inside the Global Research Cleanroom MEMS: Inside the Global Research Cleanroom This follow-up to our introduction to MEMS takes you inside the GE Global Research cleanroom...

299

The China-in-Global Energy Model  

E-Print Network [OSTI]

The China-in-Global Energy Model (C-GEM) is a global Computable General Equilibrium (CGE) model that captures the interaction of production, consumption and trade among multiple global regions and sectors – including five ...

Qi, T.

300

Hot Topics: Globalization and Climate Change  

E-Print Network [OSTI]

global sense of the world, is bound up in both its analysis and its policy proposals with the same issues that confront globalization theorists. The proliferation of theories and analyses in globalization and climate change reflects the emerging nature...

Malone, Elizabeth L.

2002-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Heavy quark diffusion from the lattice  

SciTech Connect (OSTI)

We study the diffusion of heavy quarks in the quark gluon plasma using the Langevin equations of motion and estimate the contribution of the transport peak to the Euclidean current-current correlator. We show that the Euclidean correlator is remarkably insensitive to the heavy quark diffusion coefficient and give a physical interpretation of this result using the free streaming Boltzmann equation. However if the diffusion coefficient is smaller than {approx}1/({pi}T), as favored by RHIC phenomenology, the transport contribution should be visible in the Euclidean correlator. We outline a procedure to isolate this contribution.

Petreczky, Peter; Teaney, Derek [Nuclear Theory Group, Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States); Department of Physics and Astronomy, SUNY at Stony Brook, Stony Brook, New York 11764 (United States)

2006-01-01T23:59:59.000Z

302

Determinants of intranet diffusion and infusion  

Science Journals Connector (OSTI)

Commercial interest in Internet technology has grown tremendously in the last decade. Until now, little research has been devoted to examining the internal deployment of Internet technology. The present study focuses on the implementation process of intranets by examining factors associated with its diffusion and infusion in organizations. Findings suggest that earliness of adoption, top management support, and organizational size are positively associated with intranet diffusion. Intranet infusion is positively associated with earliness of adoption, top management support, and IT infrastructure flexibility, and these effects are mediated by intranet diffusion. Implications for management and suggestions for further research are discussed.

Lauren B. Eder; Magid Igbaria

2001-01-01T23:59:59.000Z

303

Diffusive Accumulation of Methane Bubbles in Seabed  

E-Print Network [OSTI]

We consider seabed bearing methane bubbles. In the absence of fractures the bubbles are immovably trapped in a porous matrix by surface tension forces; therefore the dominant mechanism of transfer of gas mass becomes the diffusion of gas molecules through the liquid. The adequate description of this process requires accounting "other-than-normal" (non-Fickian) diffusion effects, thermodiffusion and gravity action. We evaluate the diffusive flux of aqueous methane and predict the possibility of existence of bubble mass accumulation zones (which can appear independently from the presence/absence of hydrate stability zone) and effect of non-Fickian drift on the capacity of shallow and deep methane-hydrate deposits.

Goldobin, D S; Levesley, J; Lovell, M A; Rochelle, C A; Jackson, P; Haywood, A; Hunter, S; Rees, J

2010-01-01T23:59:59.000Z

304

PARTNERSHIP PROFILE: THE GLOBAL FUND | 1 About the Global Fund to Fight AIDS,  

E-Print Network [OSTI]

grants worth a total of US$29 billion in more than 140 countries. The Global Fund provided 22% of allPARTNERSHIP PROFILE: THE GLOBAL FUND | 1 MARCH 2014 About the Global Fund to Fight AIDS, Tuberculosis and Malaria The Global Fund to Fight AIDS, Tuberculosis and Malaria (Global Fund) is a global

Klein, Ophir

305

Mixing it up - Measuring diffusion in supercooled liquid solutions...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mixing it up - Measuring diffusion in supercooled liquid solutions of methanol and ethanol at temperatures near the glass Mixing it up - Measuring diffusion in supercooled liquid...

306

DOE - Office of Legacy Management -- Oak Ridge Gaseous Diffusion...  

Office of Legacy Management (LM)

Oak Ridge Gaseous Diffusion Plant - TN 02 FUSRAP Considered Sites Site: Oak Ridge Gaseous Diffusion Plant (TN.02 ) Designated Name: Alternate Name: Location: Evaluation Year: Site...

307

DOE - Office of Legacy Management -- Paducah Gaseous Diffusion...  

Office of Legacy Management (LM)

Paducah Gaseous Diffusion Plant - KY 01 FUSRAP Considered Sites Site: Paducah Gaseous Diffusion Plant (KY.01 ) Designated Name: Alternate Name: Location: Evaluation Year: Site...

308

Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

diffusion in Lead Zirconate Titanate and Barium Titanate. Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate. Abstract: Hydrogen is a potential clean-burning,...

309

Non-Destructive Analysis Calibration Standards for Gaseous Diffusion...  

Broader source: Energy.gov (indexed) [DOE]

Non-Destructive Analysis Calibration Standards for Gaseous Diffusion Plant (GDP) Decommissioning Non-Destructive Analysis Calibration Standards for Gaseous Diffusion Plant (GDP)...

310

Oxygen Diffusion (OD) Dramatically Improves Wear-Resistance of...  

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

Oxygen Diffusion (OD) Dramatically Improves Wear-Resistance of Titanium Oxygen Diffusion (OD) Dramatically Improves Wear-Resistance of Titanium 2007 Diesel Engine-Efficiency &...

311

Using Rare Gas Permeation to Probe Methanol Diffusion near the...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Rare Gas Permeation to Probe Methanol Diffusion near the Glass Transition Temperature. Using Rare Gas Permeation to Probe Methanol Diffusion near the Glass Transition Temperature....

312

HILO: Quasi Diffusion Accelerated Monte Carlo on Hybrid Architectures  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

HILO: Quasi Diffusion Accelerated Monte Carlo on Hybrid Architectures HILO: Quasi Diffusion Accelerated Monte Carlo on Hybrid Architectures The Boltzmann transport equation...

313

Ripping Graphene: Preferred Directions  

Science Journals Connector (OSTI)

Ripping Graphene: Preferred Directions ... Here we present experimental and theoretical studies on cracks or tears in suspended monolayer graphene membranes. ... Edges from mechanically induced ripping exhibit straight lines and are predominantly aligned in the armchair or zigzag directions of the graphene lattice. ...

Kwanpyo Kim; Vasilii I. Artyukhov; William Regan; Yuanyue Liu; M. F. Crommie; Boris I. Yakobson; A. Zettl

2011-12-12T23:59:59.000Z

314

Departmental Directives System  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order establishes the directives system to be used for publishing permanent and temporary directives issued by DOE Headquarters and addressed to Headquarters and/or field elements. Chg 1 dated 3-14-85. Cancels DOE 1321.1A.

1983-04-07T23:59:59.000Z

315

Effects of vaned diffuser pressure recovery on centrifugal compressor stage performance  

E-Print Network [OSTI]

Orientation of Channel Taps and Sealed Holes ? ? ? ? ? 28 11 Control Rxan 12 Inlet and Exit Velocity Triangles 13 Impeller Meridional Profile- 14 Prescribed Flow Functians 30 35 36 15 Vened Diffuser Geanetry 41 16 Leading Edge Circumf erentia1 Static... the mixture onto the power tur- bine. After the power turbine extracts the energy frcm the ~e, it is diffused and directed to the rear half of the regenerators to pre- heat the air exiting the canpressor. The cooled gases are then exhausted outside...

Eason, Robyn Monique

2012-06-07T23:59:59.000Z

316

Endeavor Global | Open Energy Information  

Open Energy Info (EERE)

Endeavor Global Endeavor Global Jump to: navigation, search Logo: Endeavor Global Name Endeavor Global Address 900 Broadway Place New York, New York Zip 10003 Coordinates 40.7391824°, -73.9897252° 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":40.7391824,"lon":-73.9897252,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

317

Global Warming and Extreme Weather  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

318

BPL Global | Open Energy Information  

Open Energy Info (EERE)

BPL Global BPL Global Jump to: navigation, search Name BPL Global Place Pittsburgh, Pennsylvania Zip 15222 Product BPL Global is a Pittburgh based company that uses broadband over powerline (BPL) to intergrate offerings of advanced metering infrastructure and broadband internet. Coordinates 40.438335°, -79.997459° 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":40.438335,"lon":-79.997459,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

319

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

320

MEMS Relays | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MEMS Technology 2-1-7-v-metal-mems-devices MEMS: Inside the Global Research Cleanroom 2-3-11-v Carousolar Uses Solar Power for Fun 2-2-6-v GE Scientists Demonstrate...

Note: This page contains sample records for the topic "global direct diffuse" 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

Tropospheric chemistry: A global perspective  

E-Print Network [OSTI]

a global Openshaw, K. , Wood fuels the developing world, Newbetween 6 and 40% of wood fuel is converted to charcoalsimilar to that for wood fuel. The source for CO given in

Logan, Jennifer A; Prather, Michael J; Wofsy, Steven C; McElroy, Michael B

1981-01-01T23:59:59.000Z

322

The Sun's global magnetic field  

Science Journals Connector (OSTI)

...the plasma in the Sun's atmosphere...representation of the Sun's large-scale...high density and temperature contrast between...the density and temperature distributions found in the global...magnetic fields on the Sun and other stars...

2012-01-01T23:59:59.000Z

323

Global energy demand to 2060  

SciTech Connect (OSTI)

The projection of global energy demand to the year 2060 is of particular interest because of its relevance to the current greenhouse concerns. The long-term growth of global energy demand in the time scale of climatic change has received relatively little attention in the public discussion of national policy alternatives. The sociological, political, and economic issues have rarely been mentioned in this context. This study emphasizes that the two major driving forces are global population growth and economic growth (gross national product per capita), as would be expected. The modest annual increases assumed in this study result in a year 2060 annual energy use of >4 times the total global current use (year 1986) if present trends continue, and >2 times with extreme efficiency improvements in energy use. Even assuming a zero per capita growth for energy and economics, the population increase by the year 2060 results in a 1.5 times increase in total annual energy use.

Starr, C. (Electric Power Research Institute, Palo Alto, CA (USA))

1989-01-01T23:59:59.000Z

324

Global Consequences of Land Use  

Science Journals Connector (OSTI)

...purposes of illustration, we compare three hypothetical landscapes: a natural ecosystem...Russia, 1998 ). 28 S. L. Postel , Pillar of Sand: Can the Miracle...services in the long term. | Center for Sustainability and the Global Environment (SAGE...

Jonathan A. Foley; Ruth DeFries; Gregory P. Asner; Carol Barford; Gordon Bonan; Stephen R. Carpenter; F. Stuart Chapin; Michael T. Coe; Gretchen C. Daily; Holly K. Gibbs; Joseph H. Helkowski; Tracey Holloway; Erica A. Howard; Christopher J. Kucharik; Chad Monfreda; Jonathan A. Patz; I. Colin Prentice; Navin Ramankutty; Peter K. Snyder

2005-07-22T23:59:59.000Z

325

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

326

Global air quality and climate  

E-Print Network [OSTI]

CRITICAL REVIEW Global air quality and climatewz Arlene M.determine regional air quality and can alter climate.to-continental scale air quality. Reducing the O 3 precursor

2012-01-01T23:59:59.000Z

327

THE GLOBAL NUCLEAR ENERGY PARTNERSHIP:  

Broader source: Energy.gov (indexed) [DOE]

GLOBAL NUCLEAR ENERGY PARTNERSHIP: GLOBAL NUCLEAR ENERGY PARTNERSHIP: Greater Energy Security in a Cleaner, Safer World The Global Nuclear Energy Partnership (GNEP) is a comprehensive strategy to increase U.S. and global energy security, encourage clean development around the world, reduce the risk of nuclear proliferation, and improve the environment. A plentiful, reliable supply of energy is the cornerstone of sustained economic growth and prosperity. Nuclear power is the only proven technology that can provide abundant supplies of base load electricity reliably and without air pollution or emissions of greenhouse gasses. In order to help meet growing demand for energy at home and encourage the growth of prosperity around the globe, GNEP provides for the safe, extensive expansion of clean nuclear power.

328

direct_deposit_111609  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PROTECT YOUR BANKING INFORMATION: PROTECT YOUR BANKING INFORMATION: DO NOT complete this form until you are ready to submit it to the Payroll Department. DIRECT DEPOSIT REQUEST Directions: 1. Provide required information neatly, legibly; 2. If Checking Account Direct Deposit, include a voided check. a. DO NOT submit a deposit slip! 3. If Savings Account Direct Deposit, include a copy of savings card. 4. Sign this form; 5. Inter-office mail it to Craft Payroll at "P238." DIRECT DEPOSITION AUTHORIZATION I hereby authorize Los Alamos National Laboratory, hereinafter called The Laboratory, to initiate credit entries and, if necessary, debit entries and adjustments for any credit entries in error to my account listed on this form. If deposit is for:

329

Directions and Maps  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Directions & Maps Directions & Maps Plan Your Visit Visit About the Museum Museum Hours Directions & Maps When to Visit Arrange for a Visit Around Los Alamos Contact Us invisible utility element Directions and Maps Aerial View of Los Alamos Aerial approach to the Los Alamos airport Where we're located Los Alamos (elevation 7,355 feet) is perched high atop the Pajarito Plateau in the Jemez Mountains, 35 miles northwest of Santa Fe. The Bradbury Science Museum is located in downtown Los Alamos at the corner of Central Avenue and 15th Street. If you're driving here and using GPS navigation, our address is 1350 Central Avenue, Los Alamos, NM 87544. How to get here From Albuquerque take I-25 north to Santa Fe (take NM 599 for most direct route), then US 84/285 north to Pojoaque. At Pojoaque take the NM 502 exit

330

Building Technologies Office: Global Superior Energy Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Superior Energy Global Superior Energy Performance Partnership to someone by E-mail Share Building Technologies Office: Global Superior Energy Performance Partnership on Facebook Tweet about Building Technologies Office: Global Superior Energy Performance Partnership on Twitter Bookmark Building Technologies Office: Global Superior Energy Performance Partnership on Google Bookmark Building Technologies Office: Global Superior Energy Performance Partnership on Delicious Rank Building Technologies Office: Global Superior Energy Performance Partnership on Digg Find More places to share Building Technologies Office: Global Superior Energy Performance Partnership on AddThis.com... About Take Action to Save Energy Activities 179d Tax Calculator Advanced Energy Design Guides Advanced Energy Retrofit Guides

331

Sunrise Global Solar Energy | Open Energy Information  

Open Energy Info (EERE)

Sunrise Global Solar Energy Place: Taoyuan County, Taiwan Zip: 330 Sector: Solar Product: Engaged in solar monocrystalline cell design and production. References: Sunrise Global...

332

Carbon Markets Global Ltd | Open Energy Information  

Open Energy Info (EERE)

Markets Global Ltd Place: London, United Kingdom Zip: NW4 2HT Product: Assist project originators develop and finance clean development projects. References: Carbon Markets Global...

333

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

334

New Medical Technology | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of care and expanding medical treatment boundaries. Home > Innovation > Healthcare Additive Manufacturing Demonstration at GE Global Research See how GE Global Research is...

335

Global Threat Reduction Initiative | Department of Energy  

Office of Environmental Management (EM)

Reduction Initiative An overview of the Global Threat Reduction Initiative, U.S.-Origin Nuclear Fuel Removals. Global Threat Reduction Initiative More Documents &...

336

Global Threat Reduction Initiative | Department of Energy  

Office of Environmental Management (EM)

Initiative Global Threat Reduction Initiative The Current Status of Gap and U.S.-Origin Nuclear Fuel Removals 2011. Global Threat Reduction Initiative More Documents &...

337

GLOBAL CONVERGENCE OF AN ELASTIC MODE APPROACH ...  

E-Print Network [OSTI]

Definition (Global Convergence Safeguard). We say that a nonlinear pro- gramming algorithm has a global convergence safeguard if any accumulation point of.

338

Oil & Gas Technology Center | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Research Oil & Gas Technology Center GE Global Research Oil & Gas Technology Center Mark Little, SVP and chief technology officer for GE, and Eric Gebhardt, vice president...

339

Diffuser Augmented Wind Turbine Analysis Code  

E-Print Network [OSTI]

, it is necessary to develop innovative wind capturing devices that can produce energy in the locations where large conventional horizontal axis wind turbines (HAWTs) are too impractical to install and operate. A diffuser augmented wind turbine (DAWT) is one...

Carroll, Jonathan

2014-05-31T23:59:59.000Z

340

Diffusion of Innovations over Multiplex Social Networks  

E-Print Network [OSTI]

The ways in which an innovation (e.g., new behaviour, idea, technology, product) diffuses among people can determine its success or failure. In this paper, we address the problem of diffusion of innovations over multiplex social networks where the neighbours of a person belong to one or multiple networks (or layers) such as friends, families, or colleagues. To this end, we generalise one of the basic game-theoretic diffusion models, called networked coordination game, for multiplex networks. We present analytical results for this extended model and validate them through a simulation study, finding among other properties a lower bound for the success of an innovation.While simple and leading to intuitively understandable results, to the best of our knowledge this is the first extension of a game-theoretic innovation diffusion model for multiplex networks and as such it provides a basic framework to study more sophisticated innovation dynamics.

Ramezanian, Rasoul; Magnani, Matteo; Montesi, Danilo

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Diffusion of innovations in social networks  

E-Print Network [OSTI]

While social networks do affect diffusion of innovations, the exact nature of these effects are far from clear, and, in many cases, there exist conflicting hypotheses among researchers. In this paper, we focus on the linear ...

Acemoglu, Daron

342

Diffusion of carbon dioxide (1); propane (2)  

Science Journals Connector (OSTI)

This document is part of Subvolume A ‘Gases in Gases, Liquids and their Mixtures’ of Volume 15 ‘Diffusion in Gases, Liquids and Electrolytes’ of Landolt-Börnstein Group IV ‘Physical Chemistry’. It is part of the ...

J. Winkelmann

2007-01-01T23:59:59.000Z

343

Diffusion of hydrogen (1); propane (2)  

Science Journals Connector (OSTI)

This document is part of Subvolume A ‘Gases in Gases, Liquids and their Mixtures’ of Volume 15 ‘Diffusion in Gases, Liquids and Electrolytes’ of Landolt-Börnstein Group IV ‘Physical Chemistry’. It is part of the ...

J. Winkelmann

2007-01-01T23:59:59.000Z

344

Diffusion Preconditioner for Discontinuous Galerkin Transport Problems  

E-Print Network [OSTI]

limits; however, it degrades for high-aspect ratio cells. These properties are typical for partially consistent diffusion synthetic acceleration (DSA) schemes, and in particular they are exactly the properties of the method that was previously developed...

Barbu, Anthony Petru

2011-08-08T23:59:59.000Z

345

Diffusion Databases for ICME | Department of Energy  

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

ICME Diffusion Databases for ICME 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation lm036warren2011o.pdf More...

346

Time-space fabric underlying anomalous diffusion  

E-Print Network [OSTI]

This study unveils the time-space transforms underlying anomalous diffusion process. Based on this finding, we present the two hypotheses concerning the effect of fractal time-space fabric on physical behaviors and accordingly derive fractional quantum relationships between energy and frequency, momentum and wavenumber which further give rise to fractional Schrodinger equation. As an alternative modeling approach to the standard fractional derivatives, we introduce the concept of the Hausdorff derivative underlying the Hausdorff dimensions of metric spacetime. And in terms of the proposed hypotheses, the Hausdorff derivative is used to derive a linear anomalous transport-diffusion equation underlying anomalous diffusion process. Its Green's function solution turns out to be a new type of stretched Gaussian distribution and is compared with that from the Richardson's diffusion equation.

W Chen

2005-05-08T23:59:59.000Z

347

Electrospray emitters For diffusion vacuum pumps  

E-Print Network [OSTI]

Following similar principles as regular diffusion vacuum pumps, an electrospray emitter is set to produce a jet of charged particles that will drag air molecules out of a volume. To be a feasible concept, the emitted ...

Diaz Gómez Maqueo, Pablo (Pablo Ly)

2011-01-01T23:59:59.000Z

348

The drivers of foreign direct investment in telecommunications among developing countries : the role of government  

E-Print Network [OSTI]

During the late 1980s, globalization of the world's economies and technological development created the conditions for the expansion of Foreign Direct Investment (FDI) in telecommunications. This tendency has been further ...

Cruz Alemán, Guillermo Alberto

2009-01-01T23:59:59.000Z

349

FY 2011 Third Quarter Report Estimate of Historical Aerosol Direct and Indirect Effects  

SciTech Connect (OSTI)

The global and annual mean aerosol direct and indirect effects estimated from Community Earth System Model (CESM) simulations are -0.06 W m-2 and -1.39 W m-2, respectively.

Koch, D

2011-06-22T23:59:59.000Z

350

Ising Model of Diffusion in Molecular Sieves  

Science Journals Connector (OSTI)

We have developed a new analytical theory for activated diffusion in zeolites at finite loadings, including the effect of adsorbate-adsorbate interactions. Excellent qualitative agreement is obtained comparing our new theory to kinetic Monte Carlo simulations. We have applied this theory to benzene diffusion in faujasite, to help resolve discrepancies among different experiments. Our results are in qualitative agreement with pulsed field gradient NMR, and in qualitative disagreement with tracer zero-length column data.

Chandra Saravanan; Fabien Jousse; Scott M. Auerbach

1998-06-29T23:59:59.000Z

351

Diffusive shielding stabilizes bulk nanobubble clusters  

E-Print Network [OSTI]

Using molecular dynamics, we study the nucleation and stability of bulk nanobubble clusters. We study the formation, growth, and final size of bulk nanobubbles. We find that, as long as the bubble-bubble interspacing is small enough, bulk nanobubbles are stable against dissolution. Simple diffusion calculations provide an excellent match with the simulation results, giving insight into the reason for the stability: nanobubbles in a cluster of bulk nanobubbles "protect" each other from diffusion by a shielding effect.

Weijs, Joost H; Lohse, D

2011-01-01T23:59:59.000Z

352

ORNL DAAC, global climate data, GIS formats  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Data in GIS Formats Data in GIS Formats ORNL DAAC has re-released a key climatology data set in two additional formats especially suitable for geographic information system (GIS) users. Version 2.1 of "Global 30-Year Mean Monthly Climatology, 1930-1960 (Cramer and Leemans)" now offers the data in ASCII GRID format and binary format. These formats can be read directly into software packages such as ESRI's ARC/INFO and ERDAS' IMAGINE. The Cramer and Leemans climatology data set contains monthly averages of mean temperature, temperature range, precipitation, rain days, and sunshine hours for the terrestrial surface of the globe. It is gridded at a 0.5-degree longitude/latitude resolution. The Cramer and Leemans data are also available in the original ASCII format, which can be read in FORTRAN or with programs such as SAS.

353

Fighting Fire with Fire: Superlattice Cooling of Silicon Hotspots to Reduce Global Cooling Requirements  

SciTech Connect (OSTI)

The running costs of data centers are dominated by the need to dissipate heat generated by thousands of server machines. Higher temperatures are undesirable as they lead to premature silicon wear-out; in fact, mean time to failure has been shown to decrease exponentially with temperature (Black's law). Although other server components also generate heat, microprocessors still dominate in most server configurations and are also the most vulnerable to wearout as the feature sizes shrink. Even as processor complexity and technology scaling have increased the average energy density inside a processor to maximally tolerable levels, modern microprocessors make extensive use of hardware structures such as the load-store queue and other CAM-based units, and the peak temperatures on chip can be much worse than even the average temperature of the chip. In recent studies, it has been shown that hot-spots inside a processor can generate {approx} 800W/cm{sup 2} heat flux whereas the average heat flux is only 10-50W/cm{sup 2}, and due to this disparity in heat generation, the temperature in hot spots may be up to 30 C more than average chip temperature. The key problem processor hot-spots create is that in order to prevent some critical hardware structures from wearing out faster, the air conditioners in a data center have to be provisioned for worst case requirements. Worse yet, air conditioner efficiencies decrease exponentially as the desired ambient temperature decreases relative to the air outside. As a result, the global cooling costs in data centers, which nearly equals the IT equipment power consumption, are directly correlated with the maximum hot spot temperatures of processors, and there is a distinct requirement for a cooling technique to mitigate hot-spots selectively so that the global air conditioners can operate at higher, more efficient, temperatures. We observe that localized cooling via superlattice microrefrigeration presents exactly this opportunity whereby hot-spots can be cooled selectively and allow global coolers to operate at much more efficient temperatures. Recent advances in processor cooling technologies have demonstrated that thermoelectric coolers (TEC), which use a Peltier effect to form heat pumps, can be used to reduce the temperature of hot spots. By applying a thermoelectric cooler between the heat spreader and the processor die and applying current selectively at the hot spots, heat from the hot-spots can be spread much more efficiently. The ability to implement such thermoelectric coolers on a real silicon device has been demonstrated recently, albeit for small prototype chips. The key question then, that needs to be answered before such thermoelectric coolers can be integrated in commodity server processors, is 'What is the potential for superlattice microrefrigeration to reduce global cooling costs in data centers?'. In order to answer this question, we present a comprehensive analysis of the impact of thermoelectric coolers on global cooling costs. Our thermal analysis covers all aspects of cooling a server in a data center, and integrates on-chip dynamic and leakage power sources with a detailed heat diffusion model of a processor (that models the silicon to the thermoelectric cooler to the heat spreader and the heat sink) and finally the computer room air conditioner (CRAC) efficiency, as shown in Figure 1. In Section II, we present the components of the system model.

Biswas, S; Tiwari, M; Sherwood, T; Theogarajan, L; Chong, F T

2010-10-05T23:59:59.000Z

354

Direct Discharge Permit (Vermont)  

Broader source: Energy.gov [DOE]

A direct discharge permit is required if a project involves the discharge of pollutants to state waters. For generation purposes, this involves the withdrawal of surface water for cooling purposes...

355

Directed transport in equilibrium  

E-Print Network [OSTI]

We investigate how a microscopic system, which can move only in one direction, comes to equilibrium with a heat-bath. To understand this problem, we investigate a symmetry broken dimer constrained to move in a particular direction when in contact with a uniform heat-bath at a constant temperature. The dimer is not driven by any external force. The system gains kinetic energy from the heat-bath and that the system can only use in directed transport. At the hard core collision limit between the particles of the dimer, we show by exact analytic calculations and complementary numerical results that the dimer undergoes steady directed transport by attaining a stationary distribution for a relevant degree of freedom. Our observation, being perfectly consistent with the {\\it second law of thermodynamics}, leads to a generalization of the existing {\\it Brownian ratchet} paradigm and points out some important limitations of {\\it Fokker-Planck} dynamics.

Bhattacharyay, A

2010-01-01T23:59:59.000Z

356

Surface Wind Direction Variability  

Science Journals Connector (OSTI)

Common large shifts of wind direction in the weak-wind nocturnal boundary layer are poorly understood and are not adequately captured by numerical models and statistical parameterizations. The current study examines 15 datasets representing a ...

Larry Mahrt

2011-01-01T23:59:59.000Z

357

Art Directable Tornadoes  

E-Print Network [OSTI]

......................................................................... 25 2. Directional Force ........................................................... 26 3. Vortex Force .................................................................. 26 4. Lattice... ................................................................... 7 7 Tornado in its rope stage before disappearing ........................................... 9 8 Fire vortex and Waterspout ........................................................................ 10 9 Landspout and Gustnado...

Dwivedi, Ravindra

2011-08-08T23:59:59.000Z

358

Determination of the Pt spin diffusion length by spin-pumping and spin Hall effect  

SciTech Connect (OSTI)

The spin diffusion length of Pt at room temperature and at 8 K is experimentally determined via spin pumping and spin Hall effect in permalloy/Pt bilayers. Voltages generated during excitation of ferromagnetic resonance from the inverse spin Hall effect and anisotropic magnetoresistance effect were investigated with a broadband approach. Varying the Pt layer thickness gives rise to an evolution of the voltage line shape due to the superposition of the above two effects. By studying the ratio of the two voltage components with the Pt layer thickness, the spin diffusion length of Pt can be directly extracted. We obtain a spin diffusion length of ?1.2 nm at room temperature and ?1.6 nm at 8 K.

Zhang, Wei; Pearson, John E.; Hoffmann, Axel [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)] [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Vlaminck, Vincent [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Colegio de Ciencias e Ingenería, Universidad San Fransciso de Quito, Quito (Ecuador); Divan, Ralu [Center for Nanoscale Materials, Argonne National Laboratory, Illinois 60439 (United States)] [Center for Nanoscale Materials, Argonne National Laboratory, Illinois 60439 (United States); Bader, Samuel D. [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Center for Nanoscale Materials, Argonne National Laboratory, Illinois 60439 (United States)

2013-12-09T23:59:59.000Z

359

Lattice Boltzmann method for heat diffusion in axis-symmetric geometries  

Science Journals Connector (OSTI)

Lattice Boltzmann Methods (LBM) have been used to solve momentum, heat and mass transport equations mainly in Cartesian coordinate system. In the present work, the LBM is extended to solve transports in axis-symmetric geometries, such as pipes and spheres. Heat diffusion and conduction in solids without and with heat generation were tested. The heat diffusion equation for axis-symmetric problem is reduced to diffusion equation as in Cartesian coordinate with an extra term due to the surface area variation along the radial direction. The extra term is treated as a source term (forcing term) in LBM. The extra term can be approximated by using finite difference or more accurately as a flux term. The results predicted by LBM are well compared with analytical solutions and finite volume method.

A.A. Mohamad

2009-01-01T23:59:59.000Z

360

Measurement of diffusion coefficients of francium and rubidium in yttrium based on laser spectroscopy  

Science Journals Connector (OSTI)

We report the measurement of the diffusion coefficients of francium and rubidium ions implanted in a yttrium foil. We developed a methodology, based on laser spectroscopy, which can be applied to radioactive and stable species, and allows us to directly take record of the diffusion time. Francium isotopes are produced via fusion-evaporation nuclear reaction of a O18 beam on a Au target at the Tandem XTU accelerator facility in Legnaro, Italy. Francium is ionized at the gold-vacuum interface and Fr+ ions are then transported with an electrostatic beamline to a cell for neutralization and capture in a magneto-optical trap (MOT). A Rb+ beam is also available, which follows the same path as Fr+ ions. The accelerated ions are focused and implanted in an yttrium foil for neutralization. The time evolution of the MOT and the vapor fluorescence signals are used to determine diffusion times of Fr and Rb in Y as a function of temperature.

C. de Mauro; R. Calabrese; L. Corradi; A. Dainelli; A. Khanbekyan; E. Mariotti; P. Minguzzi; L. Moi; S. Sanguinetti; G. Stancari; L. Tomassetti; S. Veronesi

2008-12-18T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Refrigerant directly cooled capacitors  

DOE Patents [OSTI]

The invention is a direct contact refrigerant cooling system using a refrigerant floating loop having a refrigerant and refrigeration devices. The cooling system has at least one hermetic container disposed in the refrigerant floating loop. The hermetic container has at least one electronic component selected from the group consisting of capacitors, power electronic switches and gating signal module. The refrigerant is in direct contact with the electronic component.

Hsu, John S. (Oak Ridge, TN); Seiber, Larry E. (Oak Ridge, TN); Marlino, Laura D. (Oak Ridge, TN); Ayers, Curtis W. (Kingston, TN)

2007-09-11T23:59:59.000Z

362

New Directions in Direct Dark Matter Searches  

E-Print Network [OSTI]

I present the status of direct dark matter detection with specific attention to the experimental results and their phenomenological interpretation in terms of dark matter interactions. In particular I review a new and more general approach to study signals in this field based on non-relativistic operators which parametrize more efficiently the dark matter-nucleus interactions in terms of a very limited number of relevant degrees of freedom. Then I list the major experimental results, pointing out the main uncertainties that affect the theoretical interpretation of the data. Finally, since the underlying theory that describes both the dark matter and the standard model fields is unknown, I address the uncertainties coming from the nature of the interaction. In particular, the phenomenology of a class of models in which the interaction between dark matter particles and target nuclei is of a long-range type is discussed.

Paolo Panci

2014-02-06T23:59:59.000Z

363

Advances and new directions in direct liquefaction  

SciTech Connect (OSTI)

With advance in single stage processes such as H-Coal, EDS and SRC, and refining and upgrading of coal liquids by Chevron and UOP, the direct liquefaction process has continuously evolved to the present two-stage catalytic configuration, which produces the highest liquid yield and product quality of any process worldwide. The Two Stage Liquefaction (TSL) process has been successfully applied to bituminous and subbituminous coals, overcoming problems associated with earlier processes. But, potential for additional improvement is recognized in several areas: cleaning coal prior to liquefaction; low temperature and pressure preconditioning of feed coal; novel catalysts development to arrest regressive reactions and improve hydrotreatment and cracking reactions; improvement in hydrocarbon value recovery and reduced energy rejection by alternate bottoms processing techniques. In this paper, after discussing briefly the history of liquefaction and development of the TSL process, present potential areas for research and development are presented.

Rao, S.N.; Schindler, H.D.; McGurl, G.V.

1988-01-01T23:59:59.000Z

364

Thermal diffusion of Boussinesq solitons  

Science Journals Connector (OSTI)

We consider the problem of the soliton dynamics in the presence of an external noisy force for the Boussinesq type equations. A set of ordinary differential equations (ODEs) of the relevant coordinates of the system is derived. We show that for the improved Boussinesq (IBq) equation the set of ODEs has limiting cases leading to a set of ODEs which can be directly derived either from the ill-posed Boussinesq equation or from the Korteweg-de Vries (KdV) equation. The case of a soliton propagating in the presence of damping and thermal noise is considered for the IBq equation. A good agreement between theory and simulations is observed showing the strong robustness of these excitations. The results obtained here generalize previous results obtained in the frame of the KdV equation for lattice solitons in the monatomic chain of atoms.

Edward Arévalo and Franz G. Mertens

2007-10-18T23:59:59.000Z

365

Shrinking Global Population: A futuristic scenario  

E-Print Network [OSTI]

global population it will not be a game-changer. #12;Measures for changes in total births 1. TotalShrinking Global Population: A futuristic scenario or a current challenge. Hillel Bar of RSAI - Atlanta November 15, 2013 #12;The evolution of global population Year Global Population

Nagurney, Anna

366

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.

367

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.

368

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant – November 2013  

Broader source: Energy.gov [DOE]

Review of Preparedness for Severe Natural Phenomena Events at the Portsmouth Gaseous Diffusion Plant.

369

The diffusion of mobile telephones: An empirical analysis for Peru  

Science Journals Connector (OSTI)

This paper models the diffusion of mobile telephone subscriptions in Peru. Peru's mobile telephone diffusion has occurred in a concentrated market with relatively high prices and as such it features consumer behaviors such as call management, multiple ... Keywords: Diffusion forecasting, Gompertz curve, Mobile telephones, Peru, Technology diffusion

Peter Yamakawa; Gareth H. Rees; José Manuel Salas; Nikolai Alva

2013-07-01T23:59:59.000Z

370

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant- January 2013  

Broader source: Energy.gov [DOE]

Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution

371

ANOVA-HDMR structure of the higher order nodal diffusion solution  

SciTech Connect (OSTI)

Nodal diffusion methods still represent a standard in global reactor calculations, but employ some ad-hoc approximations (such as the quadratic leakage approximation) which limit their accuracy in cases where reference quality solutions are sought. In this work we solve the nodal diffusion equations utilizing the so-called higher-order nodal methods to generate reference quality solutions and to decompose the obtained solutions via a technique known as High Dimensional Model Representation (HDMR). This representation and associated decomposition of the solution provides a new formulation of the transverse leakage term. The HDMR structure is investigated via the technique of Analysis of Variance (ANOVA), which indicates why the existing class of transversely-integrated nodal methods prove to be so successful. Furthermore, the analysis leads to a potential solution method for generating reference quality solutions at a much reduced calculational cost, by applying the ANOVA technique to the full higher order solution. (authors)

Bokov, P. M.; Prinsloo, R. H.; Tomasevic, D. I. [South African Nuclear Energy Corporation - Necsa, Building 1900, P.O. Box 582, 0001 Pretoria (South Africa)

2013-07-01T23:59:59.000Z

372

Global Scratch File System at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Scratch Scratch Global Scratch File System Overview The global scratch file system (or "global scratch") can be accessed by multiple NERSC systems. Its default quota is much larger than the Global Home quota, so it can be used to temporarily store large amounts of data. This file system is periodically purged. Platforms Using Global Scratch The global scratch file system is available on all NERSC systems except PDSF. Quotas Default global scratch quotas are 20 TB and 2,000,000 inodes. If you need more than that, fill out the Disk Quota Change Request Form. Purging Yes, files in global scratch file system are subject to purging. Backup No, Files in global scratch file system are not backed up. Environment Variable You can reference your personal scratch directory in global scratch as

373

Thermal Diffusivity and Viscosity of Suspensions of Disc Shaped Nanoparticles  

E-Print Network [OSTI]

In this work we conduct a transient heat conduction experiment with an aqueous suspension of nanoparticle disks of Laponite JS, a sol forming grade, using laser light interferometry. The image sequence in time is used to measure thermal diffusivity and thermal conductivity of the suspension. Imaging of the temperature distribution is facilitated by the dependence of refractive index of the suspension on temperature itself. We observe that with the addition of 4 volume % of nano-disks in water, thermal conductivity of the suspension increases by around 30%. A theoretical model for thermal conductivity of the suspension of anisotropic particles by Fricke as well as by Hamilton and Crosser explains the trend of data well. In turn, it estimates thermal conductivity of the Laponite nanoparticle itself, which is otherwise difficult to measure in a direct manner. We also measure viscosity of the nanoparticle suspension using a concentric cylinder rheometer. Measurements are seen to follow quite well, the theoretical relation for viscosity of suspensions of oblate particles that includes up to two particle interaction. This result rules out the presence of clusters of particles in the suspension. The effective viscosity and thermal diffusivity data show that the shape of the particle has a role in determining enhancement of thermophysical properties of the suspension.

Susheel S. Bhandari; K. Muralidhar; Yogesh M Joshi

2014-03-05T23:59:59.000Z

374

Globalization: Ecological Consequences of Global-Scale Connectivity in People,  

E-Print Network [OSTI]

, 2005; Rial et al., 2004). For example, increasing atmospheric CO2 and other greenhouse gases of Agriculture ­ Agricultural Research Service, Las Cruces, New Mexico USA 1. Introduction Globalization). Movement of humans through improved transportation is leading to spread of pests and pathogens

375

Perpendicular fibre tracking for neural fibre bundle analysis using diffusion MRI  

Science Journals Connector (OSTI)

Information on the directionality and structure of axonal fibres in neural tissue can be obtained by analysing diffusion-weighted MRI data sets. Several fibre tracking algorithms have been presented in the literature that trace the underlying field of principal orientations of water diffusion, which correspond to the local primary eigenvectors of the diffusion tensor field. However, the majority of the existing techniques ignore the secondary and tertiary orientations of diffusion, which contain significant information on the local patterns of diffusion. In this paper, we introduce the idea of perpendicular fibre tracking and present a novel dynamic programming method that traces surfaces, which are locally perpendicular to the axonal fibres. This is achieved by using a cost function, with geometric and fibre orientation constraints, that is evaluated dynamically for every voxel in the image domain starting from a given seed point. The proposed method is tested using synthetic and real DW-MRI data sets. The results conclusively demonstrate the accuracy and effectiveness of our method.

S. Ray; W. O'Dell; Angelos Barmpoutis

2014-01-01T23:59:59.000Z

376

Global change: Acronyms and abbreviations  

SciTech Connect (OSTI)

This list of acronyms and abbreviations is compiled to provide the user with a ready reference to dicipher the linguistic initialisms and abridgements for the study of global change. The terms included in this first edition were selected from a wide variety of sources: technical reports, policy documents, global change program announcements, newsletters, and other periodicals. The disciplinary interests covered by this document include agriculture, atmospheric science, ecology, environmental science, oceanography, policy science, and other fields. In addition to its availability in hard copy, the list of acronyms and abbreviations is available in DOS-formatted diskettes and through CDIAC`s anonymous File Transfer Protocol (FTP) area on the Internet.

Woodard, C.T. [Oak Ridge National Lab., TN (United States); Stoss, F.W. [Univ. of Tennessee, Knoxville, TN (United States). Energy, Environment and Resources Center

1995-05-01T23:59:59.000Z

377

Global warming: A Northwest perspective  

SciTech Connect (OSTI)

The Northwest Power Planning Council convened a symposium in Olympia, Washington, on the subject of global climate change ( the greenhouse effect'') and its potential for affecting the Pacific Northwest. The symposium was organized in response to a need by the Power Council to understand global climate change and its potential impacts on resource planning and fish and wildlife planning for the region, as well as a need to understand national policy developing toward climate change and the Pacific Northwest's role in it. 40 figs., 15 tabs.

Scott, M.J.; Counts, C.A. (eds.)

1990-02-01T23:59:59.000Z

378

Strategies for Direct Volume Rendering of Diffusion Tensor Fields Gordon Kindlmann, David Weinstein, David Hart  

E-Print Network [OSTI]

, David Hart Scientific Computing and Imaging Department of Computer Science, University of Utah {gk|dmw

Utah, University of

379

Hue-Balls and Lit-Tensors for Direct Volume Rendering of Diffusion Tensor Fields  

E-Print Network [OSTI]

and David Weinstein Scientific Computing and Imaging Department of Computer Science, University of Utah {gk|dmw

Utah, University of

380

HueBalls and LitTensors for Direct Volume Rendering of Diffusion Tensor Fields  

E-Print Network [OSTI]

and David Weinstein Scientific Computing and Imaging Department of Computer Science, University of Utah {gk|dmw

Utah, University of

Note: This page contains sample records for the topic "global direct diffuse" 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

An improved multipyranometer array for the measurement of direct and diffuse solar radiation  

E-Print Network [OSTI]

Corrected and Switched MPA Solution. . . . . 66 Table 5. 2: Hourly RMSE & R2 . 67 Table 5. 3: Curtiss Ib, T/C & Uniform Albedo Results (from Curtiss (1990)). . . . . . . . . . 67 Table D. I: Geometric Shade Factors for the Eppley Shadow Band (Eppley Labs...

Munger, Bryce Kirtley

1997-01-01T23:59:59.000Z

382

Double-diffusive interfaces in Lake Kivu reproduced by direct numerical simulations  

E-Print Network [OSTI]

for Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany, 5 Physics of Aquatic Systems

Wehrli, Bernhard

383

Direct visualization of the perforant pathway in the human brain with ex vivo diffusion tensor imaging  

E-Print Network [OSTI]

Ex vivo magnetic resonance imaging yields high resolution images that reveal detailed cerebral anatomy and explicit cytoarchitecture in the cerebral cortex, subcortical structures, and white matter in the human brain. Our ...

Augustinack, Jean C.

384

Magnetoplasticity and diffusion in silicon single crystals  

SciTech Connect (OSTI)

The effect of static magnetic fields on the dynamics of surface dislocation segments, as well as the diffusion mobility of a dopant in silicon single crystals, has been analyzed. It has been experimentally found that the preliminary treatment of p-type silicon plates (the dopant is boron with a concentration of 10{sup 16} cm{sup -3}) in the static magnetic field (B = 1 T, a treatment time of 30 min) leads to an increase in the mobility of surface dislocation segments. The characteristic times of observed changes (about 80 h) and the threshold dopant concentration (10{sub 15} cm{sup -3}) below which the magneto-optical effect in silicon is not fixed have been determined. It has been found that diffusion processes in dislocation-free silicon are magnetically sensitive: the phosphorus diffusion depth in p-type silicon that is preliminarily aged in the static magnetic field increases (by approximately 20%) compared to the reference samples.

Skvortsov, A. A., E-mail: SkvortsovAA2009@yandex.ru; Karizin, A. V. [Moscow State Technical University 'MAMI' (Russian Federation)

2012-01-15T23:59:59.000Z

385

Directional Sensor Control: Heuristic Approaches  

E-Print Network [OSTI]

sensors are fused to form global estimates of target locations. ... We assume that there is a notional fusion center, which ...... a string-submodular type property.

2014-05-03T23:59:59.000Z

386

A molecular dynamics investigation of the diffusion characteristics of cavity-type zeolites with 8-ring windows  

SciTech Connect (OSTI)

Molecular dynamics (MD) simulations are used to investigate the diffusion characteristics in DDR, CHA, LTA, ITQ-29, and TSC zeolites that have cavities separated by 8-member ring windows of dimensions in the 3.4–4.6 Å range. These zeolites have potential usage for separation of a variety of mixtures, such as CO{sub 2}/CH{sub 4}, CO{sub 2}/H{sub 2}, H{sub 2}/CH{sub 4}, and propane/propene, relying on a combination of adsorption and diffusion selectivities. The magnitude of self-diffusivities, D{sub i,self}, of the CH{sub 4} is found to have a direct correlation with the size of the window opening, increasing by about two orders of magnitude for a 0.5 Å increase in the window aperture. The diffusion selectivities of CO{sub 2}/CH{sub 4}, and H{sub 2}/CH{sub 4} mixtures were also found to have direct, and strong, correlation, with the window aperture. This opens up the possibility of tuning diffusion selectivities by appropriate choice of the framework structure. Framework flexibility dynamics have also been investigated with the aid of two published force fields for all-silica zeolites. Due to the lattice vibrations there is a distribution of window sizes that varies with time. The diffusivity of CH4 for a flexible lattice was found to correlate with aperture size of the time-averaged window, in precisely the same manner as for fixed framework lattices. This leads to the conclusion that lattice flexibility, per se, has no influence on the magnitude of the diffusivity or diffusion selectivity.

Krishna, Rajamani; van Baten, Jasper M.

2011-01-01T23:59:59.000Z

387

Conservation and Global Climate Change  

E-Print Network [OSTI]

V.6 Conservation and Global Climate Change Diane M. Debinski and Molly S. Cross OUTLINE 1. Introduction 2. How climate is changing 3. Environmental responses to climate change 4. Consequences of climate the coming decades will be preserving biodiversity in the face of climate change. It has become increasingly

Landweber, Laura

388

On globally Symmetric Finsler spaces  

E-Print Network [OSTI]

The paper consider the symmetric of Finsler spaces. We give some conditions about globally symmetric Finsler spaces. Then we prove that these spaces can be written as a coset space of Lie group with an invariant Finsler metric. Finally, we prove that such a space must be Berwaldian

Khatamy, R Chavosh

2011-01-01T23:59:59.000Z

389

Workshop report Impact of Global  

E-Print Network [OSTI]

with an emphasis on low-to-middle-income countries 21­23 March 2012 Wellcome Trust, London #12;IMPACT OF GLOBALWorkshop report Impact of Global Environmental Change on Food/Nutrition and Water in Relation ENVIRONMENTAL CHANGE ON FOOD/NUTRITION AND WATER IN RELATION TO HUMAN HEALTH 21­23 March 2012 Wellcome Trust

Rambaut, Andrew

390

Cambio global y polucin atmosfrica  

E-Print Network [OSTI]

pollution and forest ecosystems Atmospheric pollution is referred as a component of global change. The role on the interaction between pollution and climate change. Key words: atmospheric pollution, acidic rain, anatomical anatómicos y fisiológicos, micorrizas, recursos ge- néticos, masas forestales españolas. Abstract Atmospheric

Espigares, Tíscar

391

Comparison of Diffuse Shortwave Irradiance Measurements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diffuse Shortwave Diffuse Shortwave Irradiance Measurements J. J. Michalsky and J. Schlemmer Atmospheric Sciences Research Center State University of New York Albany, New York B. C. Bush, S. Leitner, D. Marsden, and F. P. J. Valero Scripps Institution of Oceanography University of California, San Diego La Jolla, California R. Dolce and A. Los Kipp & Zonen, Inc. Bohemia, New York and Delft The Netherlands E. G. Dutton Climate Monitoring and Diagnostics Laboratory National Oceanic and Atmospheric Administration Boulder, Colorado M. P. Haeffelin Virginia Polytechnic Institute and State University Blackburg, Virginia G. Major Budapest University of Economic Sciences and Public Administration Budapest, Hungry J. Hickey The Eppley Laboratory, Inc. Newport, Rhode Island

392

Establishing the Clear-Sky Diffuse Reference for BORCAL Using EPLAB Model 8-48 Pyranometers at the National Renewable Energ...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Establishing the Clear-Sky Diffuse Reference for BORCAL Establishing the Clear-Sky Diffuse Reference for BORCAL Using EPLAB Model 8-48 Pyranometers at the National Renewable Energy Laboratory I. Reda, T. L. Stoffel, and D. Myers National Renewable Energy Laboratory Golden, Colorado Abstract Precision pyranometer calibrations are important to the quality of Atmospheric Radiation Measurement's (ARM's) shortwave solar irradiance measurements. Calibrations at the National Renewable Energy Laboratory (NREL) and Southern Great Plains (SGP) are under clear-sky conditions. G = I * COS(2) + D, is used to establish the reference global during the calibration. The references for the beam irradiance, I, and the solar zenith angle, 2, are internationally recognized. There is no recognized reference for the diffuse irradiance, D. Our research goal is to establish a consistent diffuse

393

Directional gamma detector  

DOE Patents [OSTI]

An improved directional gamma radiation detector has a collector sandwiched etween two layers of insulation of varying thicknesses. The collector and insulation layers are contained within an evacuated casing, or emitter, which releases electrons upon exposure to gamma radiation. Delayed electrons and electrons entering the collector at oblique angles are attenuated as they pass through the insulation layers on route to the collector.

LeVert, Francis E. (Downers Grove, Knoxville, TN); Cox, Samson A. (Downers Grove, IL)

1981-01-01T23:59:59.000Z

394

Extension of DOE Directives  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Notice extends the following directives until 2/16/04: DOE N 205.2, Foreign National Access to DOE Cyber Systems, and DOE N 205.3, Password Generation, Protection, and Use, dated 11/23/99-7/1/00.

2003-02-24T23:59:59.000Z

395

Climate-Weather Modeling Studies Using a Prototype Global Cloud-System  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Climate-Weather Modeling Studies Using a Prototype Global Cloud-System Resolving Model Climate-Weather Modeling Studies Using a Prototype Global Cloud-System Resolving Model Climate-Weather Modeling Studies Using a Prototype Global Cloud-System Resolving Model PI Name: Venkatramani Balaji PI Email: balaji@princeton.edu Institution: Geophysical Fluid Dynamics Laboratory Allocation Program: ESP Allocation Hours at ALCF: 150 Million Year: 2010 to 2013 Research Domain: Earth Science We expect our understanding of the role of clouds in climate to undergo a qualitative change as the resolutions of global models begin to encompass clouds. At these resolutions, non-hydrostatic dynamics become significant and deep convective processes are resolved. We are poised at the threshold of being able to run global scale simulations that include direct, non-parameterized, simulations of deep convective clouds. The goal of this

396

Global Health: Mental Health and the Global Agenda  

Science Journals Connector (OSTI)

When the World Health Organization (WHO) European Ministerial Conference on Mental Health endorsed the statement "No health without mental health" in 2005, it spoke to the intrinsic — and indispensable — role of mental health care in health care writ large. Yet mental health has long been treated... This article reviews the impact of mental health on overall health on a global level. The authors suggest changes that could lead to improved identification and treatment of mental illness in countries with limited resources.

Becker A.E.; Kleinman A.

2013-07-04T23:59:59.000Z

397

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

398

ARCS FOUNDATION GLOBAL IMPACT AWARD Global Health, Public Good and Graduate Education  

E-Print Network [OSTI]

ARCS FOUNDATION GLOBAL IMPACT AWARD Global Health, Public Good and Graduate Education Case Foundation Awards Luncheon in Atlanta on November 20, 2014. #12;Application Materials: 1) A letter

Arnold, Jonathan

399

Letter: Direction and Guidance for Implementing Direct DOE Relationship &  

Broader source: Energy.gov (indexed) [DOE]

Letter: Direction and Guidance for Implementing Direct DOE Letter: Direction and Guidance for Implementing Direct DOE Relationship & Funding for EMSSABs Letter: Direction and Guidance for Implementing Direct DOE Relationship & Funding for EMSSABs From: Assistant Secretary, Jessie Hill Roberson (EM-11) To: Mr. Monte Wilson, Chair, INEEL Citizens Advisory Board This letter is in response to a November 21, 2003 letter regarding direction and guidance for implementing direct DOE relationship and funding for Environmental Management Site Specific Advisory Boards. Roberson Letter - December 12, 2003 More Documents & Publications Letter: Progress in Implementing a Direct DOE Relationship & Funding for the EMSSABs Letter: Mission, Objectives & Scope of the Site Specific Advisory Board Memorandum: Direction and Guidance for Implementing Direct DOE Relationship

400

Letter: Direction and Guidance for Implementing Direct DOE Relationship &  

Broader source: Energy.gov (indexed) [DOE]

Letter: Direction and Guidance for Implementing Direct DOE Letter: Direction and Guidance for Implementing Direct DOE Relationship & Funding for EMSSABs Letter: Direction and Guidance for Implementing Direct DOE Relationship & Funding for EMSSABs From: Assistant Secretary, Jessie Hill Roberson (EM-11) To: Mr. Monte Wilson, Chair, INEEL Citizens Advisory Board This letter is in response to a November 21, 2003 letter regarding direction and guidance for implementing direct DOE relationship and funding for Environmental Management Site Specific Advisory Boards. Roberson Letter - December 12, 2003 More Documents & Publications Letter: Progress in Implementing a Direct DOE Relationship & Funding for the EMSSABs Letter: Mission, Objectives & Scope of the Site Specific Advisory Board Memorandum: Direction and Guidance for Implementing Direct DOE Relationship

Note: This page contains sample records for the topic "global direct diffuse" 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

Independent Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011  

Broader source: Energy.gov (indexed) [DOE]

Activity Report, Portsmouth Gaseous Diffusion Plant - Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011 Independent Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011 July 2011 Orientation Visit to the Portsmouth Gaseous Diffusion Plant [HIAR-PAD-2011-07-27] The purpose of the visit was to discuss the nuclear safety oversight strategy, describe the site lead program, increase HSS personnel's operational awareness of the site's activities, and to determine how HSS can carry out its independent oversight and mission support responsibilities. Independent Activity Report, Portsmouth Gaseous Diffusion Plant - July 2011 More Documents & Publications Independent Activity Report, Portsmouth Gaseous Diffusion Plant - August 2011 Independent Activity Report, Argonne National Laboratory - August 2011

402

Open Source Software: Management, Diffusion and Competition  

E-Print Network [OSTI]

and competitive environment such as the ICT market. 1 Introduction OSS is an alternative model of software has introduced an innovative model of software development, based on self-organized communitiesOpen Source Software: Management, Diffusion and Competition Spyridoula Lakkaé National

Kouroupetroglou, Georgios

403

Correcting the diffusion approximation at the boundary  

E-Print Network [OSTI]

, 2011 The diffusion approximation to the radiative transport equation applies for light that has solutions of the radiative transport equation to evaluate each of their accuracy. Nonetheless, nearly all transport equation · I þ aI þ sLI ¼ 0; ð1:1� governs continuous light propagation in tissues [1

Kim, Arnold D.

404

Original article Mannitol enhances intracellular calcium diffusion  

E-Print Network [OSTI]

concentration-dependent increase in the amount of calcium absor- bed in 1 h from 8 cm long ileal loops prepared-enhanced movement of calcium out of the loop cannot have utilized the paracellular pathway, inasmuch as the luminalOriginal article Mannitol enhances intracellular calcium diffusion in the rat ileum ­ a hypothesis

Paris-Sud XI, Université de

405

Diffusive Acceleration of Ions at Interplanetary Shocks  

Science Journals Connector (OSTI)

Heliospheric shocks are excellent systems for testing theories of particle acceleration in their environs. These generally fall into two classes: (1) interplanetary shocks that are linear in their ion acceleration characteristics with the non?thermal ions serving as test particles and (2) non?linear systems such as the Earth’s bow shock and the solar wind termination shock where the accelerated ions strongly influence the magnetohydrodynamic structure of the shock. This paper explores the modelling of diffusive acceleration at a particular interplanetary shock with an emphasis on explaining in situ measurements of ion distribution functions. The observational data for this event was acquired on day 292 of 1991 by the Ulysses mission. The modeling is performed using a well?known kinetic Monte Carlo simulation which has yielded good agreement with observations at several heliospheric shocks as have other theoretical techniques namely hybrid plasma simulations and numerical solution of the diffusion?convection equation. In this theory/data comparison it is demonstrated that diffusive acceleration theory can to first order successfully account for both the proton distribution data near the shock and the observation of energetic protons farther upstream of this interplanetary shock than lower energy pick?up protons using a single turbulence parameter. The principal conclusion is that diffusive acceleration of inflowing upstream ions can model this pick?up ion?rich event without the invoking any seed pre?acceleration mechanism though this investigation does not rule out the action of such pre?acceleration.

Matthew G. Baring; Errol J. Summerlin

2005-01-01T23:59:59.000Z

406

Diffusive Acceleration of Ions at Interplanetary Shocks  

E-Print Network [OSTI]

Heliospheric shocks are excellent systems for testing theories of particle acceleration in their environs. These generally fall into two classes: (1) interplanetary shocks that are linear in their ion acceleration characteristics, with the non-thermal ions serving as test particles, and (2) non-linear systems such as the Earth's bow shock and the solar wind termination shock, where the accelerated ions strongly influence the magnetohydrodynamic structure of the shock. This paper explores the modelling of diffusive acceleration at a particular interplanetary shock, with an emphasis on explaining in situ measurements of ion distribution functions. The observational data for this event was acquired on day 292 of 1991 by the Ulysses mission. The modeling is performed using a well-known kinetic Monte Carlo simulation, which has yielded good agreement with observations at several heliospheric shocks, as have other theoretical techniques, namely hybrid plasma simulations, and numerical solution of the diffusion-convection equation. In this theory/data comparison, it is demonstrated that diffusive acceleration theory can, to first order, successfully account for both the proton distribution data near the shock, and the observation of energetic protons farther upstream of this interplanetary shock than lower energy pick-up protons, using a single turbulence parameter. The principal conclusion is that diffusive acceleration of inflowing upstream ions can model this pick-up ion-rich event without the invoking any seed pre-acceleration mechanism, though this investigation does not rule out the action of such pre-acceleration.

Matthew G. Baring; Errol J. Summerlin

2005-06-08T23:59:59.000Z

407

Global  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

complimentary copy. Redistribution subject to AIP license or copyright, see http:php.aip.orgphpcopyright.jsp rent sheet, 22 and a study of the formation, stability, and...

408

Global nuclear-structure calculations  

SciTech Connect (OSTI)

The revival of interest in nuclear ground-state octupole deformations that occurred in the 1980's was stimulated by observations in 1980 of particularly large deviations between calculated and experimental masses in the Ra region, in a global calculation of nuclear ground-state masses. By minimizing the total potential energy with respect to octupole shape degrees of freedom in addition to {epsilon}{sub 2} and {epsilon}{sub 4} used originally, a vastly improved agreement between calculated and experimental masses was obtained. To study the global behavior and interrelationships between other nuclear properties, we calculate nuclear ground-state masses, spins, pairing gaps and {Beta}-decay and half-lives and compare the results to experimental qualities. The calculations are based on the macroscopic-microscopic approach, with the microscopic contributions calculated in a folded-Yukawa single-particle potential.

Moeller, P.; Nix, J.R.

1990-04-20T23:59:59.000Z

409

Global Change Research Act of 1990  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Change Research Act of 1990 Print E-mail Global Change Research Act of 1990 Print E-mail The U.S. Global Change Research Program (USGCRP) was established by Presidential initiative in 1989 and mandated by Congress in the Global Change Research Act (GCRA) of 1990 in order to "assist the nation and the world to understand, assess, predict, and respond to human-induced and natural processes of global change." In consultation with White House officials and the Subcommittee on Global Change Research (SGCR), USGCRP's Executive Director ensures that the Program meets all mandated requirements which are summarized in the table below. Global Change Research Act of 1990 Requirements Please click on the buttons below for further details about the Global Change Research Act of 1990. Public Law 101-606(11/16/90) 104 Stat. 3096-3104

410

Ireland's Global University MSc World Heritage Conservation  

E-Print Network [OSTI]

for conservation · Cultural heritage, sustainable development and diversity · Global biodiversity and heritageIreland's Global University MSc World Heritage Conservation (Three Years Part Time) (Online facing conservation challenges, there is a growing need for professionals who understand how

411

Re-embedding the global soul  

E-Print Network [OSTI]

This thesis proposes to "re-embed" the "global nomad" into the context of an increasingly globalized world at the room scale. I define re-embedding as the "plugging in" of social relationships to local contexts and their ...

Wang, Joy (Joy Yuk-Hwa), 1975-

2001-01-01T23:59:59.000Z

412

Notes on global climate and ocean currents  

Science Journals Connector (OSTI)

The problems related to the role of both natural and anthropogenic factors in global climate change are considered. The role of ocean circulation in the Earth’s global thermodynamic processes is qualitatively ...

R. I. Nigmatulin

2012-02-01T23:59:59.000Z

413

Terra Solar Global Inc | Open Energy Information  

Open Energy Info (EERE)

Global Inc Jump to: navigation, search Name: Terra Solar Global Inc Place: New York, New York Zip: 10111-2000 Product: US-based manufacturer of amorphous silicon (a-Si) thin-film...

414

"How Can the WTO Help Harness Globalization?"  

E-Print Network [OSTI]

"How Can the WTO Help Harness Globalization?" "How Can the WTO Help Harness Globalization?" Public ForumPublic Forum WTOWTO20072007 4-5 October 20074-5 October 2007 #12;"How Can the WTO Help Harness

415

Merck Global Energy Management Program  

E-Print Network [OSTI]

MERCK GLOBAL ENERGY MANAGEMENT PROGRAM Keith Williams, Merck & Co., Inc. Company: Merck & Co., Inc. Category: Energy Efficiency Program ? Corporate In April 2000, Merck & Co., Inc. launched its comprehensive program to reduce energy... automation system (BAS) management, insulation programs, employee awareness, and implementation of best practices. MERIT set an aggressive target of 3.5% savings over 2003 consumption and expects to achieve a 4.37 percent savings in 2004. The major...

Williams, K.

2005-01-01T23:59:59.000Z

416

Integrated Global Background Monitoring Network  

SciTech Connect (OSTI)

One of the more significant problems when trying to determine what impact is having on global cycles is not knowing what ''natural'' levels should be for both abiotic (gases, trace elements) and biotic (ecosystem functions) processes. The authors believe that a well designed, coordinated network of baseline stations in remote areas around the world can provide a data base will allow best current estimates to be made of biotic and abiotic baseline conditions. These baseline conditions will then help us make better comparisons with more impacted areas, and thus help us more fully understand the impact man is having on his world. This paper examines the history of background pollution monitoring at the international level, describes current activities in the field of ''integrated'' background monitoring, and proposes criteria for the development of a global network of baseline stations to coordinate background monitoring for the presence, accumulation and behavior of pollutants in remote ecosystems. In this paper, this network is called the Integrated Global Background Monitoring Network.

Wiersma, G.B.; Franklin, J.F.; Kohler, A.; Croze, H.; Boelcke, C.

1986-12-01T23:59:59.000Z

417

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

418

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

419

Bayesian method for global optimization  

Science Journals Connector (OSTI)

We introduce a Bayesian approach for obtaining the global optimum of multimodal functions. The set of observed minima of a multimodal function is viewed as a sample from a multinomial distribution, whose cells correspond to the basins of attraction of the local optima. We then derive the posterior distribution of the number of local optima. This posterior information is obtained from a Bayesian analysis and is used to construct a stopping criterion for a sequential random search method which finds the optimal tradeoff between reliability and computational effort. The computational complexity of this global optimization method is a strong function of the total number of local optima and a weak function of the dimensions of the configuration space. Application to four classical problems from the global optimization literature, a bifunctional catalytic reactor problem, and the conformation problem of Lennard-Jones microclusters is demonstrated. Comparisons with the Bayesian method of Boender and Rinooy Kan [Math. Program. 37, 59 (1987)] and the simulated annealing method of Dekkers and Aarts [Math. Program. 50, 367 (1991)] are provided and, in each case, the computational complexity of our method is shown to be smaller than that of these methods.

Prasana K. Venkatesh; Morrel H. Cohen; Robert W. Carr; Anthony M. Dean

1997-05-01T23:59:59.000Z

420

Enabling Green Energy and Propulsion Systems via Direct Noise Computation |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

High-fidelity simulation of exhaust nozzle under installed configuration High-fidelity simulation of exhaust nozzle under installed configuration Umesh Paliath, GE Global Research; Joe Insley, Argonne National Laboratory Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI Email: paliath@ge.com Institution: GE Global Research Allocation Program: INCITE Allocation Hours at ALCF: 105 Million Year: 2013 Research Domain: Engineering GE Global Research is using the Argonne Leadership Computing Facility (ALCF) to deliver significant improvements in efficiency, (renewable's) yield and lower emissions (noise) for advanced energy and propulsion systems. Understanding the fundamental physics of turbulent mixing has the potential to transform product design for components such as airfoils and

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While these samples are representative of the content of NLEBeta,
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421

Increasing Global Renewable Energy Market Share  

E-Print Network [OSTI]

Increasing Global Renewable Energy Market Share: Recent Trends and Perspectives Final Report..............................................................................................................................12 2.2 Bioenergy

Peinke, Joachim

422

Promoting Sustainability on a Global Scale  

Broader source: Energy.gov [DOE]

Promoting Sustainability on a Global Scale Martina Otto, Head of the Policy Unit, United Nations Environment Programme

423

Global Partnership and Alliance Opportunities | Department of...  

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

Partnership and Alliance Opportunities Global Partnership and Alliance Opportunities Many challenges and uncertainty facing the automotive industry, creating partnering...

424

4, 40694124, 2007 Global-scale  

E-Print Network [OSTI]

into evapotranspiration and total runoff. We estimate that global groundwater recharge was 12 666 km3 /yr for the climateHESSD 4, 4069­4124, 2007 Global-scale modeling of groundwater recharge P. D¨oll and K. Fiedler System Sciences Global-scale modeling of groundwater recharge P. D¨oll and K. Fiedler Institute

Boyer, Edmond

425

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

426

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

427

The Offshore Services Global Value Chain  

E-Print Network [OSTI]

The Offshore Services Global Value Chain ECONOMIC UPGRADING AND WORKFORCE DEVELOPMENT Karina & COMPETITIVENESS #12;The Offshore Services Global Value Chain: Economic Upgrading and Workforce Development "Skills & Competitiveness, Duke University Posted: November 17, 2011 #12;The Offshore Services Global Value Chain: Economic

Richardson, David

428

Global optimization in inverse problem of scatterometry  

E-Print Network [OSTI]

Global optimization in inverse problem of scatterometry Lekbir Afraites1,2 Jerome Hazard3 Patrick as a parametric optimization problem using the Least Square criterion. In this work, a design procedure for global robust optimization is developed using Kriging and global optimization approaches. Robustness

Paris-Sud XI, Université de

429

Global Optimization in Generalized Geometric Programming  

E-Print Network [OSTI]

exchangernetwork design 5], chemical reactor design 2, 6], optimal condenser design 7], oxygen production 8Global Optimization in Generalized Geometric Programming Costas D. Maranas1 and Christodoulos A Abstract A deterministic global optimization algorithm is proposed for locating the global minimum

Maranas, Costas

430

Comments on Diffusion of Kr Isotopes in Solid Ar  

Science Journals Connector (OSTI)

Recently, the isotope effect for Kr diffusion in Ar was found to be f?K?0. 48. The results are consistent with a divacancy diffusion mechanism with ?K?1.

J. J. Burton

1970-10-15T23:59:59.000Z

431

Quantitative analysis of cerebral white matter anatomy from diffusion MRI  

E-Print Network [OSTI]

In this thesis we develop algorithms for quantitative analysis of white matter fiber tracts from diffusion MRI. The presented methods enable us to look at the variation of a diffusion measure along a fiber tract in a single ...

Maddah, Mahnaz

2008-01-01T23:59:59.000Z

432

Pattern formation in reaction diffusion systems: a Galerkin model  

Science Journals Connector (OSTI)

Reaction diffusion systems are extremely useful for studying pattern formation in biological systems. We carry out a Lorenz like few mode truncation of a reaction diffusion system and show that it not only giv...

A. Bhattacharyay; J.K. Bhattacharjee

2001-06-01T23:59:59.000Z

433

A Multiscale Framework for Markov Decision Processes using Diffusion Wavelets  

E-Print Network [OSTI]

A Multiscale Framework for Markov Decision Processes using Diffusion Wavelets Mauro Maggioni Program in Applied Mathematics Department of Mathematics Yale University New Haven, CT 06511 mauro Diffusion Wavelets Mauro Maggioni mauro.maggioni@yale.edu Program in Applied Mathematics Department

Mahadevan, Sridhar

434

On the Principle of Smooth Fit for Killed Diffusions  

E-Print Network [OSTI]

On the Principle of Smooth Fit for Killed Diffusions Farman Samee To appear in Electron. Commun of Smooth Fit for Killed Diffusions Farman Samee Research Report No. 16, 2006, Probab. Statist. Group

Sidorov, Nikita

435

CODED SPECTROSCOPY FOR ETHANOL DETECTION IN DIFFUSE, FLUORESCENT MEDIA  

E-Print Network [OSTI]

ABSTRACT CODED SPECTROSCOPY FOR ETHANOL DETECTION IN DIFFUSE, FLUORESCENT MEDIA by Scott Thomas Mc FOR ETHANOL DETECTION IN DIFFUSE, FLUORESCENT MEDIA by Scott Thomas McCain Department of Electrical

436

Diffusion Multilayer Sampling of Ground Water in Five Wells at...  

Office of Environmental Management (EM)

Diffusion Multilayer Sampling of Ground Water in Five Wells at the Tuba City, Arizona, Site Diffusion Multilayer Sampling of Ground Water in Five Wells at the Tuba City, Arizona,...

437

Shell Model for Atomistic Simulation of Lithium Diffusion in...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shell Model for Atomistic Simulation of Lithium Diffusion in Mixed MnTi Oxides. Shell Model for Atomistic Simulation of Lithium Diffusion in Mixed MnTi Oxides. Abstract: Mixed...

438

Moisture Diffusion in Asphalt Binders and Fine Aggregate Mixtures  

E-Print Network [OSTI]

cost in highway maintenance and vehicle operations. One key mechanism of how moisture reaches the asphalt-aggregate interface is by its permeation or diffusion through the asphalt binder or mastic. Different techniques are available for diffusion...

Vasconcelos, Kamilla L.

2011-08-08T23:59:59.000Z

439

A piecewise linear finite element discretization of the diffusion equation  

E-Print Network [OSTI]

it discretizes the diffusion equation on an arbitrary polyhedral mesh. We implemented our method in the KULL software package being developed at Lawrence Livermore National Laboratory. This code previously utilized Palmer's method as its diffusion solver, which...

Bailey, Teresa S

2006-10-30T23:59:59.000Z

440

Solar Energy Evolution and Diffusion Studies | Department of...  

Broader source: Energy.gov (indexed) [DOE]

Evolution and Diffusion Studies Solar Energy Evolution and Diffusion Studies Graphic of a map with pinpoints and a photo of a house with solar panels on the roof. Through the Solar...

Note: This page contains sample records for the topic "global direct diffuse" 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

Imaging Intrinsic Diffusion of Bridge-Bonded Oxygen Vacancies...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Intrinsic Diffusion of Bridge-Bonded Oxygen Vacancies on TiO2(110). Imaging Intrinsic Diffusion of Bridge-Bonded Oxygen Vacancies on TiO2(110). Abstract: Since oxygen atom...

442

E-Print Network 3.0 - altered water diffusivity Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emory University Collection: Materials Science ; Physics 47 Oxygen diffusion in titanite: Lattice diffusion and fast-path diffusion in single crystals Summary: , with little...

443

The Global Nuclear Energy Partnership | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

The Global Nuclear Energy Partnership The Global Nuclear Energy Partnership An article describing the small scale reactors in the GNEP. The Global Nuclear Energy Partnership More...

444

A Model of Success: The Carnegie Institute for Global Ecology  

E-Print Network [OSTI]

Carnegie Institute for Global Ecology Kirstin Weeks, DavidInstitute for Global Ecology, the answer is an unquali? edremarkable about the Global Ecology building is not only how

Weeks, Kirstin; Lehrer, David; Bean, Jonathan

2007-01-01T23:59:59.000Z

445

A Local Incident Flux Response Expansion Transport Method for Coupling to the Diffusion Method in Cylindrical Geometry  

SciTech Connect (OSTI)

A local incident flux response expansion transport method is developed to generate transport solutions for coupling to diffusion theory codes regardless of their solution method (e.g., fine mesh, nodal, response based, finite element, etc.) for reactor core calculations in both two-dimensional (2-D) and three-dimensional (3-D) cylindrical geometries. In this approach, a Monte Carlo method is first used to precompute the local transport solution (i.e., response function library) for each unique transport coarse node, in which diffusion theory is not valid due to strong transport effects. The response function library is then used to iteratively determine the albedo coefficients on the diffusion-transport interfaces, which are then used as the coupling parameters within the diffusion code. This interface coupling technique allows a seamless integration of the transport and diffusion methods. The new method retains the detailed heterogeneity of the transport nodes and naturally constructs any local solution within them by a simple superposition of local responses to all incoming fluxes from the contiguous coarse nodes. A new technique is also developed for coupling to fine-mesh diffusion methods/codes. The local transport method/module is tested in 2-D and 3-D pebble-bed reactor benchmark problems consisting of an inner reflector, an annular fuel region, and a controlled outer reflector. It is found that the results predicted by the transport module agree very well with the reference fluxes calculated directly by MCNP in both benchmark problems.

Dingkang Zhang; Farzad Rahnema; Abderrafi M. Ougouag

2013-09-01T23:59:59.000Z

446

Breakout Session -- TEC Direction  

Broader source: Energy.gov (indexed) [DOE]

III: TEC III: TEC Direction and Priorities Presented to: Transportation External Coordination Working Group Presented by: Alex Thrower Office of Logistics Management February 7, 2008 San Antonio, Texas 2 Topics of Discussion * Transportation External Coordination Working Group (TEC) charter and membership * Topic group functions * Meeting format 3 TEC Charter and Membership * Mission - TEC was formed in 1992 to improve coordination among the Department of Energy (DOE) and external groups interested in the Department's transportation activities The Office of Civilian Radioactive Waste Management (OCRWM) co-chairs TEC with DOE's Environmental Management Program Provides an opportunity for broad based input and information exchange from varied organizations - Members meet semi-annually to participate in

447

Independent Oversight Review, Portsmouth Gaseous Diffusion Plant- April 2013  

Broader source: Energy.gov [DOE]

Review of the Integrated Safety Management System Phase I Verification Review at the Portsmouth Gaseous Diffusion Plant

448

Global Simulation of Plasma Microturbulence at the Petascale & Beyond |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fully kinetic 3-D plasma microturbulence simulation in a tokamak fusion Fully kinetic 3-D plasma microturbulence simulation in a tokamak fusion device of the self-consistent electrostatic potential. The red and blue represent regions of positive and negative potential respectively. Elongated structures in the toroidal direction follow the magnetic field lines and is characteristic of the large anisotropy between the dynamics parallel and perpendicular to the magnetic field observed in tokamak experiments. Global Simulation of Plasma Microturbulence at the Petascale & Beyond PI Name: William Tang PI Email: wtang@princeton.edu Institution: PPPL Allocation Program: ESP Allocation Hours at ALCF: 50 Million Year: 2010 to 2013 Research Domain: Physics As the current global energy economy focuses on alternatives to fossil fuels, there is increasing interest in nuclear fusion, the power source of

449

Home: Directives, Delegations, and Requirements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages

content. | Skip to navigation content. | Skip to navigation Site Map Contact Us Current Documents Archived Documents Entire Site only in current section Advanced Search... U.S. Department of Energy Office of Management Directives, Delegations, and Requirements Sections Home Directives Current Directives Draft Directives Archives Delegations Current Delegations Current Designations Rescinded Organizations' Assignment of Responsibility Development & Review RevCom Writers' Tools DPC Corner References News and Updates Help Personal tools You are here: Office of Management » Directives, Delegations, and Requirements Info Home Directives are the Department of Energy's primary means of establishing policies, requirements, responsibilities, and procedures for Departmental elements and contractors. Directive

450

Increase of global monsoon area and precipitation under global warming: A robust signal?  

E-Print Network [OSTI]

) and the global monsoon total precipitation (GMP) have increased during 1979­2008 [Hsu et al., 2011; Wang et alIncrease of global monsoon area and precipitation under global warming: A robust signal? Pang of people around the world. The global monsoon precipitation had an increasing trend over the past three

Li, Tim

451

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

452

Direct Aerosol Forcing in the Infrared at the SGP Site?  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Direct Aerosol Forcing in the Infrared at the SGP Site? Direct Aerosol Forcing in the Infrared at the SGP Site? D. D. Turner and C. N. Long Pacific Northwest National Laboratory Richland, Washington Introduction Low level haze is often observed during the night and early morning hours in many locations. This haze is typically formed during quiescent conditions by radiative cooling of the surface, which lowers the ambient temperature and consequently increases the near-surface relative humidity (RH). Many aerosols start to deliquesce around 75% relative humidity (RH) (depending on their chemical composition), and thus if the near surface RH increases above this level, haze will form. The Atmospheric Radiation Measurement (ARM) Program's ultimate goal, stated simply, is to improve the treatment of radiative transfer in global climate models. Global climate models typically do not

453

Nonlinear analysis of a reaction-diffusion system: Amplitude equations  

SciTech Connect (OSTI)

A reaction-diffusion system with a nonlinear diffusion term is considered. Based on nonlinear analysis, the amplitude equations are obtained in the cases of the Hopf and Turing instabilities in the system. Turing pattern-forming regions in the parameter space are determined for supercritical and subcritical instabilities in a two-component reaction-diffusion system.

Zemskov, E. P., E-mail: zemskov@ccas.ru [Russian Academy of Sciences, Dorodnicyn Computing Center (Russian Federation)

2012-10-15T23:59:59.000Z

454

ORIGINAL PAPER Assimilation and diffusion during xenolith-magma  

E-Print Network [OSTI]

(responsible for the linear mixing trends) and (2) diffusion-controlled redistribution of elements between bothORIGINAL PAPER Assimilation and diffusion during xenolith-magma interaction: a case study the assimilation of granitic melt. Linear mixing trends on Harker diagrams for most network-forming and mainly slow-diffusing

Podladchikov, Yuri

455

Volume exclusion and elasticity driven directional transport: an alternative model for bacterium motility  

E-Print Network [OSTI]

On the basis of a model we capture the role of strong attractive interaction in suppressing the rotational degrees of freedom of the system and volume exclusion in keeping microscopic symmetry-breaking intact to result in super-diffusive transport of small systems in a thermal atmosphere over a large time scale. Our results, characterize such systems on the basis of having a super-diffusive intermediate regime in between a very small and large time scales of diffusive regimes. Although, the Brownian ratchet model fails to account for the origin of motility in actin polymerization propelled directional motion of bacterium like Listeria Monocytogene (LM) and similar bio-mimetic systems due to the presence of strong attractive forces, our model can account for the origin of directional transport in such systems on the basis of the same interactions.

A. Bhattacharyay

2009-05-14T23:59:59.000Z

456

Volume exclusion and elasticity driven directional transport: an alternative model for bacterium motility  

E-Print Network [OSTI]

On the basis of a model we capture the role of strong attractive interaction in suppressing the rotational degrees of freedom of the system and volume exclusion in keeping microscopic symmetry-breaking intact to result in super-diffusive transport of small systems in a thermal atmosphere over a large time scale. Our results, characterize such systems on the basis of having a super-diffusive intermediate regime in between a very small and large time scales of diffusive regimes. Although, the Brownian ratchet model fails to account for the origin of motility in actin polymerization propelled directional motion of bacterium like Listeria Monocytogene (LM) and similar bio-mimetic systems due to the presence of strong attractive forces, our model can account for the origin of directional transport in such systems on the basis of the same interactions.

Bhattacharyay, A

2009-01-01T23:59:59.000Z

457

Energy Crossroads: Global Climate Change | Environmental Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Climate Change Global Climate Change Suggest a Listing Best Global Warming Articles Global Warming Articles provides facts about the causes, effects and answers to global warming; the environment; energy conservation, climate change and more. Ecolytics As emissions requirements, climate change, financial markets, and risk management become increasingly interconnected, organizations are left with critical choices regarding greenhouse gas (GHG) emissions management. Ecolytics(tm), a comprehensive web-based software tool, can help organizations in the navigation of this complex area by providing an effective cataloging, strategic planning, economic analysis, and risk management solution. Enviro$en$e Funded by the Environmental Protection Agency and the Strategic

458

Economic Globalization and a Nuclear Renaissance  

SciTech Connect (OSTI)

The phenomenon of globalization has become increasingly well recognized, documented, and analyzed in the last several years. Globalization, the integration of markets and intra-firm competition on a worldwide basis, involves complex behavioral and mindset changes within a firm that facilitate global competition. The changes revolve around efficient information flow and rapid deployment of technology. The objective of this report is to examine the probable characteristics of a global nuclear renaissance and its broad implications for industry structure and export control relative to nuclear technology. The question of how a modern renaissance would affect the trend toward globalization of the nuclear industry is addressed.

Wood, Thomas W.; Johnson, Wayne L.; Parker, Brian M.

2001-10-22T23:59:59.000Z

459

Direct Aerosol Forcing Uncertainty  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Understanding sources of uncertainty in aerosol direct radiative forcing (DRF), the difference in a given radiative flux component with and without aerosol, is essential to quantifying changes in Earth's radiation budget. We examine the uncertainty in DRF due to measurement uncertainty in the quantities on which it depends: aerosol optical depth, single scattering albedo, asymmetry parameter, solar geometry, and surface albedo. Direct radiative forcing at the top of the atmosphere and at the surface as well as sensitivities, the changes in DRF in response to unit changes in individual aerosol or surface properties, are calculated at three locations representing distinct aerosol types and radiative environments. The uncertainty in DRF associated with a given property is computed as the product of the sensitivity and typical measurement uncertainty in the respective aerosol or surface property. Sensitivity and uncertainty values permit estimation of total uncertainty in calculated DRF and identification of properties that most limit accuracy in estimating forcing. Total uncertainties in modeled local diurnally averaged forcing range from 0.2 to 1.3 W m-2 (42 to 20%) depending on location (from tropical to polar sites), solar zenith angle, surface reflectance, aerosol type, and aerosol optical depth. The largest contributor to total uncertainty in DRF is usually single scattering albedo; however decreasing measurement uncertainties for any property would increase accuracy in DRF. Comparison of two radiative transfer models suggests the contribution of modeling error is small compared to the total uncertainty although comparable to uncertainty arising from some individual properties.

Mccomiskey, Allison

460

High Speed, Low Cost Fabrication of Gas Diffusion Electrodes for Membrane Electrode Assemblies  

SciTech Connect (OSTI)

Fabrication of membrane electrode assemblies (MEAs) depends on creating inks or pastes of catalyst and binder, and applying this suspension to either the membrane (catalyst coated membrane) or gas diffusion media (gas diffusion electrode) and respectively laminating either gas diffusion media or gas diffusion electrodes (GDEs) to the membrane. One barrier to cost effective fabrication for either of these approaches is the development of stable and consistent suspensions. This program investigated the fundamental forces that destabilize the suspensions and developed innovative approaches to create new, highly stable formulations. These more concentrated formulations needed fewer application passes, could be coated over longer and wider substrates, and resulted in significantly lower coating defects. In March of 2012 BASF Fuel Cell released a new high temperature product based on these advances, whereby our customers received higher performing, more uniform MEAs resulting in higher stack build yields. Furthermore, these new materials resulted in an “instant” increase in capacity due to higher product yields and material throughput. Although not part of the original scope of this program, these new formulations have also led us to materials that demonstrate equivalent performance with 30% less precious metal in the anode. This program has achieved two key milestones in DOE’s Manufacturing R&D program: demonstration of processes for direct coating of electrodes and continuous in-line measurement for component fabrication.

DeCastro, Emory S.; Tsou, Yu-Min; Liu, Zhenyu

2013-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "global direct diffuse" 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

Gaseous Diffusion Plant Production Workers Needs Assessment  

Broader source: Energy.gov (indexed) [DOE]

Department of Energy Gaseous Diffusion Plants Department of Energy Gaseous Diffusion Plants Phase I: Needs Assessment Robert Wages Oil, Chemical and Atomic Inte national Union Steven Markowitz Mount Sinai School of Medicine Sylvia Kieding Oil, Chemical and Atomic International Union Mark Griffon University of Massachusetts Lowell Elizabeth Averill Samaras Alice Hamilton College October 1, 1997 TABLE OF CONTENTS Page Number Executive Summary 1 J: OVERVIEW 1. Introduction 2-3 2. Methods 3-8 3. Principal Findings 9-16 4. Need for Medical Surveillance and Risk Communication 16-17 PART II: METHODOLOGY AND RESULTS 4. Exposure Assessment Appendix A Appendix B Appendix C 5. Focus Group Results Appendix A Appendix B Appendix C 6. Epidemiology and Other Health Studies EXECUTIVE SUMMARY Purpose We report the results and analysis of a one year needs assessment study evaluating

462

Diffusion barriers in modified air brazes  

DOE Patents [OSTI]

A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.

Weil, Kenneth Scott; Hardy, John S; Kim, Jin Yong; Choi, Jung-Pyung

2013-04-23T23:59:59.000Z

463

Diffusion barriers in modified air brazes  

DOE Patents [OSTI]

A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.

Weil, Kenneth Scott (Richland, WA); Hardy, John S. (Richland, WA); Kim, Jin Yong (Richland, WA); Choi, Jung-Pyung (Richland, WA)

2010-04-06T23:59:59.000Z

464

Diffusive Acceleration of Ions at Interplanetary Shocks  

E-Print Network [OSTI]

Heliospheric shocks are excellent systems for testing theories of particle acceleration in their environs. These generally fall into two classes: (1) interplanetary shocks that are linear in their ion acceleration characteristics, with the non-thermal ions serving as test particles, and (2) non-linear systems such as the Earth's bow shock and the solar wind termination shock, where the accelerated ions strongly influence the magnetohydrodynamic structure of the shock. This paper explores the modelling of diffusive acceleration at a particular interplanetary shock, with an emphasis on explaining in situ measurements of ion distribution functions. The observational data for this event was acquired on day 292 of 1991 by the Ulysses mission. The modeling is performed using a well-known kinetic Monte Carlo simulation, which has yielded good agreement with observations at several heliospheric shocks, as have other theoretical techniques, namely hybrid plasma simulations, and numerical solution of the diffusion-conv...

Baring, M G; Baring, Matthew G.; Summerlin, Errol J.

2005-01-01T23:59:59.000Z

465

Globally competitive variable-speed wind turbines  

SciTech Connect (OSTI)

This paper focuses on the design issues which must be addressed if variable-speed wind turbines are to compete in the global marketplace. The paper examines how component-specific design decisions must be made on a system level if an optimized system is to be the result. The relationships among the blades, the generator and the utility interface are considered in detail, using the conceptual design of a 12 kW variable-speed wind turbine (the AOC 8/12) as a running example. The turbine is based on a direct-drive variable-reluctance generator (VRG), a single- or three-phase utility interface as appropriate, and a three-bladed rotor with fixed pitch. A preliminary turbine specification is provided, along with candidate power-speed curves and annual energy output. This paper documents the continuing development and commercialization of this technology which is being taken from the proof-of-concept stage and is now headed for field testing.

Torrey, D.A. [Rensselaer Polytechnic Institute, Troy, NY (United States); Childs, S.E.; Johnson, B.; Carter, J. [Atlantic Orient Corp., Norwich, VT (United States)

1995-12-31T23:59:59.000Z

466

White House Conference on Global Climate Change  

SciTech Connect (OSTI)

President Clinton has directed the White House office on Environmental Policy to coordinate an interagency process to develop a plan to fulfill the commitment he made in his Earth Day address on April 21, 1993. This plan will become the cornerstone of the Climate Change Plan that will be completed shortly after the Rio Accord enters into force. The Office on Environmental Policy established the Interagency Climate Change Mitigation Group to draw on the expertise of federal agencies including the National Economic Council; the Council of Economic Advisors; the Office of Science and Technology Policy; the Office of Management and Budget; the National Security Council; the Domestic Policy Council; the Environmental Protection Agency; and the Departments of Energy, Transportation, Agriculture, Interior, Treasury, Commerce, and State. Working groups have been established to examine six key policy areas: energy demand, energy supply, joint implementation, methane and other gases, sinks, and transportation. The purpose of the White House Conference on Global Climate Change was to ``tap the real-world experiences`` of diverse participants and seek ideas and information for meeting the President`s goals. During the opening session, senior administration officials defined the challenge ahead and encouraged open and frank conversation about the best possible ways to meet it.

Not Available

1993-11-01T23:59:59.000Z

467

Global Forest Resource Assessment | Open Energy Information  

Open Energy Info (EERE)

Global Forest Resource Assessment Global Forest Resource Assessment Jump to: navigation, search Tool Summary Name: Global Forest Resource Assessment Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Land Focus Area: Forestry Topics: Resource assessment Resource Type: Publications Website: www.fao.org/forestry/fra/fra2010/en/ Global Forest Resource Assessment Screenshot References: Global Forest Research Assessment[1] Overview "FAO, in cooperation with its member countries, has monitored the world's forests at 5 to 10 year intervals since 1946. These global assessments provide valuable information to policy-makers in countries, to international negotiations, arrangements and organizations related to forests and to the general public. The Global Forest Resources Assessment

468

Think Green Global Inc | Open Energy Information  

Open Energy Info (EERE)

Think Green Global Inc Think Green Global Inc Jump to: navigation, search Name Think Green Global, Inc. Place New York, New York Zip 10010 Sector Renewable Energy Product New York-based investment bank and strategic development firm that is dedicated to enhancing the growth of renewable energy and clean technology companies. References Think Green Global, Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Think Green Global, Inc. is a company located in New York, New York . References ↑ "Think Green Global, Inc." Retrieved from "http://en.openei.org/w/index.php?title=Think_Green_Global_Inc&oldid=352225" Categories: Clean Energy Organizations Companies Organizations

469

Global Industry Analysts | Open Energy Information  

Open Energy Info (EERE)

Global Industry Analysts Global Industry Analysts Jump to: navigation, search Name Global Industry Analysts Address 6150 Hellyer Avenue Place San Jose, California Zip 95138 Product Market research services Year founded 1987 Number of employees 501-1000 Phone number (408) 528-9966 Website http://www.strategyr.com/ Region Bay Area References Global Industry Analysts[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! Global Industry Analysts Global Industry Analysts, Inc., (GIA) offers one of the world's largest portfolios of research reports in terms of topics covered, geographic regions analyzed, companies profiled, and pages published. The company's current portfolio consists of more than 900 Global Strategic Business Reports (large multi-client research programs); 45,000+ Market Trend

470

Waste acid recycling via diffusion dialysis  

SciTech Connect (OSTI)

Inorganic acids are commonly used for surface cleaning and finishing of metals. The acids become unuseable due to contamination with metals or diluted and weakened. Diffusion dialysis has become a way to recover the useable acid and allow separation of the metals for recovery and sale to refineries. This technique is made possible by the use of membranes that are strong enough to withstand low ph and have long service life.

Steffani, C.

1995-05-26T23:59:59.000Z

471

Diffuse-dynamic multiparameter diffractometry: A review  

SciTech Connect (OSTI)

The results reported at the Conference on Application of X-Rays, Synchrotron Radiation, Neutrons, and Electrons in Nano-, Bio-, Information-, and Cognitive Technologies (RSNE-NBIC 2009) are briefly reviewed. This review is based on a cycle of studies [1-6] where a new method for studying the structure of real crystals-diffuse-dynamic multiparameter diffractometry (DDMD)-was proposed and substantiated.

Molodkin, V. B., E-mail: molodkn@imp.kiev.ua; Shpak, A. P. [National Academy of Sciences of Ukraine, Institute of Metal Physics (Ukraine); Kovalchuk, M. V.; Nosik, V. L. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Machulin, V. F. [National Academy of Sciences of Ukraine, Institute of Semiconductor Physics (Ukraine)

2010-12-15T23:59:59.000Z

472

Distributed Energy Resources Market Diffusion Model  

SciTech Connect (OSTI)

Distributed generation (DG) technologies, such as gas-fired reciprocating engines and microturbines, have been found to be economically beneficial in meeting commercial-sector electrical, heating, and cooling loads. Even though the electric-only efficiency of DG is lower than that offered by traditional central stations, combined heat and power (CHP) applications using recovered heat can make the overall system energy efficiency of distributed energy resources (DER) greater. From a policy perspective, however, it would be useful to have good estimates of penetration rates of DER under various economic and regulatory scenarios. In order to examine the extent to which DER systems may be adopted at a national level, we model the diffusion of DER in the US commercial building sector under different technical research and technology outreach scenarios. In this context, technology market diffusion is assumed to depend on the system's economic attractiveness and the developer's knowledge about the technology. The latter can be spread both by word-of-mouth and by public outreach programs. To account for regional differences in energy markets and climates, as well as the economic potential for different building types, optimal DER systems are found for several building types and regions. Technology diffusion is then predicted via two scenarios: a baseline scenario and a program scenario, in which more research improves DER performance and stronger technology outreach programs increase DER knowledge. The results depict a large and diverse market where both optimal installed capacity and profitability vary significantly across regions and building types. According to the technology diffusion model, the West region will take the lead in DER installations mainly due to high electricity prices, followed by a later adoption in the Northeast and Midwest regions. Since the DER market is in an early stage, both technology research and outreach programs have the potential to increase DER adoption, and thus, shift building energy consumption to a more efficient alternative.

Maribu, Karl Magnus; Firestone, Ryan; Marnay, Chris; Siddiqui,Afzal S.

2006-06-16T23:59:59.000Z

473

Gas mixture for diffuse-discharge switch  

DOE Patents [OSTI]

Gaseous medium in a diffuse-discharge switch of a high-energy pulse generator is formed of argon combined with a compound selected from the group consisting of CF/sub 4/, C/sub 2/F/sub 6/, C/sub 3/F/sub 8/, n-C/sub 4/F/sub 10/, WF/sub 6/, (CF/sub 3/)/sub 2/S and (CF/sub 3/)/sub 2/O.

Christophorou, L.G.; Carter, J.G.; Hunter, S.R.

1982-08-31T23:59:59.000Z

474

direct normal irradiance | OpenEI  

Open Energy Info (EERE)

normal irradiance normal irradiance Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. Source NREL Date Released July 31st, 2006 (8 years ago) Date Updated October 30th, 2007 (7 years ago) Keywords direct normal irradiance DNI GEF GHI GIS global horizontal irradiance insolation latitutde tilt irradiance NASA NREL South America SWERA TILT UNEP Data application/zip icon Download Shapefile and Cell Maps (zip, 13.9 MiB) text/csv icon Download Data (csv, 3.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage

475

Comparison of flat cleaved and cylindrical diffusing fibers as treatment sources for interstitial photodynamic therapy  

SciTech Connect (OSTI)

Purpose: For interstitial photodynamic therapy (iPDT) of bulky tumors, careful treatment planning is required in order to ensure that a therapeutic dose is delivered to the tumor, while minimizing damage to surrounding normal tissue. In clinical contexts, iPDT has typically been performed with either flat cleaved or cylindrical diffusing optical fibers as light sources. Here, the authors directly compare these two source geometries in terms of the number of fibers and duration of treatment required to deliver a prescribed light dose to a tumor volume. Methods: Treatment planning software for iPDT was developed based on graphics processing unit enhanced Monte Carlo simulations. This software was used to optimize the number of fibers, total energy delivered by each fiber, and the position of individual fibers in order to deliver a target light dose (D{sub 90}) to 90% of the tumor volume. Treatment plans were developed using both flat cleaved and cylindrical diffusing fibers, based on tissue volumes derived from CT data from a head and neck cancer patient. Plans were created for four cases: fixed energy per fiber, fixed number of fibers, and in cases where both or neither of these factors were fixed. Results: When the number of source fibers was fixed at eight, treatment plans based on flat cleaved fibers required each to deliver 7180–8080 J in order to deposit 90 J/cm{sup 2} in 90% of the tumor volume. For diffusers, each fiber was required to deliver 2270–2350 J (333–1178 J/cm) in order to achieve this same result. For the case of fibers delivering a fixed 900 J, 13 diffusers or 19 flat cleaved fibers at a spacing of 1 cm were required to deliver the desired dose. With energy per fiber fixed at 2400 J and the number of fibers fixed at eight, diffuser fibers delivered the desired dose to 93% of the tumor volume, while flat cleaved fibers delivered this dose to 79%. With both energy and number of fibers allowed to vary, six diffusers delivering 3485–3600 J were required, compared to ten flat cleaved fibers delivering 2780–3600 J. Conclusions: For the same number of fibers, cylindrical diffusers allow for a shorter treatment duration compared to flat cleaved fibers. For the same energy delivered per fiber, diffusers allow for the insertion of fewer fibers in order to deliver the same light dose to a target volume.

Baran, Timothy M., E-mail: timothy.baran@rochester.edu; Foster, Thomas H. [Department of Imaging Sciences, University of Rochester, Rochester, New York 14642 (United States)] [Department of Imaging Sciences, University of Rochester, Rochester, New York 14642 (United States)

2014-02-15T23:59:59.000Z

476

Diffuse-Charge Dynamics in Electrochemical Systems  

E-Print Network [OSTI]

The response of a model micro-electrochemical system to a time-dependent applied voltage is analyzed. The article begins with a fresh historical review including electrochemistry, colloidal science, and microfluidics. The model problem consists of a symmetric binary electrolyte between parallel-plate, blocking electrodes which suddenly apply a voltage. Compact Stern layers on the electrodes are also taken into account. The Nernst-Planck-Poisson equations are first linearized and solved by Laplace transforms for small voltages, and numerical solutions are obtained for large voltages. The ``weakly nonlinear'' limit of thin double layers is then analyzed by matched asymptotic expansions in the small parameter $\\epsilon = \\lambda_D/L$, where $\\lambda_D$ is the screening length and $L$ the electrode separation. At leading order, the system initially behaves like an RC circuit with a response time of $\\lambda_D L / D$ (not $\\lambda_D^2/D$), where $D$ is the ionic diffusivity, but nonlinearity violates this common picture and introduce multiple time scales. The charging process slows down, and neutral-salt adsorption by the diffuse part of the double layer couples to bulk diffusion at the time scale, $L^2/D$. In the ``strongly nonlinear'' regime (controlled by a dimensionless parameter resembling the Dukhin number), this effect produces bulk concentration gradients, and, at very large voltages, transient space charge. The article concludes with an overview of more general situations involving surface conduction, multi-component electrolytes, and Faradaic processes.

Martin Z. Bazant; Katsuyo Thornton; Armand Ajdari

2004-01-08T23:59:59.000Z

477

A diffuse interface model with immiscibility preservation  

SciTech Connect (OSTI)

A new, simple, and computationally efficient interface capturing scheme based on a diffuse interface approach is presented for simulation of compressible multiphase flows. Multi-fluid interfaces are represented using field variables (interface functions) with associated transport equations that are augmented, with respect to an established formulation, to enforce a selected interface thickness. The resulting interface region can be set just thick enough to be resolved by the underlying mesh and numerical method, yet thin enough to provide an efficient model for dynamics of well-resolved scales. A key advance in the present method is that the interface regularization is asymptotically compatible with the thermodynamic mixture laws of the mixture model upon which it is constructed. It incorporates first-order pressure and velocity non-equilibrium effects while preserving interface conditions for equilibrium flows, even within the thin diffused mixture region. We first quantify the improved convergence of this formulation in some widely used one-dimensional configurations, then show that it enables fundamentally better simulations of bubble dynamics. Demonstrations include both a spherical-bubble collapse, which is shown to maintain excellent symmetry despite the Cartesian mesh, and a jetting bubble collapse adjacent a wall. Comparisons show that without the new formulation the jet is suppressed by numerical diffusion leading to qualitatively incorrect results.

Tiwari, Arpit, E-mail: atiwari2@illinois.edu [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States)] [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States); Freund, Jonathan B., E-mail: jbfreund@illinois.edu [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States); Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States); Pantano, Carlos [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States)] [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States)

2013-11-01T23:59:59.000Z

478

Multicomponent Gas Diffusion in Porous Electrodes  

E-Print Network [OSTI]

Multicomponent gas transport is investigated with unprecedented precision by AC impedance analysis of porous YSZ anode-supported solid oxide fuel cells. A fuel gas mixture of H2-H2O-N2 is fed to the anode, and impedance data are measured across the range of hydrogen partial pressure (10-100%) for open circuit conditions at three temperatures (800C, 850C and 900C) and for 300mA applied current at 800C. For the first time, analytical formulae for the diffusion resistance (Rb) of three standard models of multicomponent gas transport (Fick, Stefan-Maxwell, and Dusty Gas) are derived and tested against the impedance data. The tortuosity is the only fitting parameter since all the diffusion coefficients are known. Only the Dusty Gas model leads to a remarkable data collapse for over twenty experimental conditions, using a constant tortuosity consistent with permeability measurements and the Bruggeman relation. These results establish the accuracy of the Dusty Gas model for multicomponent gas diffusion in porous med...

Fu, Yeqing; Dutta, Abhijit; Mohanram, Aravind; Pietras, John D; Bazant, Martin Z

2014-01-01T23:59:59.000Z

479

Non-Abelian Global Vortices  

E-Print Network [OSTI]

We study topologically stable non-Abelian global vortices in the U(N) linear sigma model. The profile functions of the solutions are numerically obtained. We investigate the behaviour of vortices in two limits in which masses of traceless or trace parts of massive bosons are much larger than the others. In the limit that the traceless parts are much heavier, we find a somewhat bizarre vortex solution carrying a non-integer U(1) winding number 1/\\sqrt{N} which is irrational in general.

Minoru Eto; Eiji Nakano; Muneto Nitta

2009-03-09T23:59:59.000Z

480

Global searches at the Tevatron  

SciTech Connect (OSTI)

We present a review of global searches at the Tevatron with D0 and CDF detectors. The strategy involves splitting the data from the Tevatron into many final states and looking for signs of new physics in the high p{sub T} tails of various distributions using SLEUTH algorithm. CDF also utilizes Bump Hunter to search for narrow resonances in mass distributions. We analyzed 180 D0 final states, 9335 D0 distributions; 399 CDF final states and 19650 CDF distributions. No evidence of new physics is found.

Renkel, Peter; /Southern Methodist U.

2009-01-01T23:59:59.000Z

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481

Morphologies resulting from the directional propagation of fractures L. Pauchard,1,  

E-Print Network [OSTI]

February 2003 When growing in a stress gradient, cracks have a directional growth. We investigate here the crack nucleation is difficult, a subcritical process is observed with the retarded formation of isolated diffusion field is created in a material, a regime of direc- tional growth of cracks can be observed

Adda-Bedia, Mokhtar

482

Foreign Direct Investment in U  

Gasoline and Diesel Fuel Update (EIA)

Foreign Direct Investment in U.S. Energy in 1998 Foreign Direct Investment in U.S. Energy in 1998 Foreign Direct Investment Foreign Direct Investment Foreign Direct Investment Foreign Direct Investment in U.S. Energy in U.S. Energy in U.S. Energy in U.S. Energy in 1998 in 1998 in 1998 in 1998 November 2000 Energy Information Administration/Foreign Direct Investment in U.S. Energy in 1998 Contacts This report was prepared in the Office of Energy Markets and End Use of the Energy Information Administration, U.S. Department of Energy, under the general direction of W. Calvin Kilgore. The project was directed by Mark E. Rodekohr, Director of the Energy Markets and Contingency Information Division (202) 586-1441, and Mary E. Northup, the Team Leader for Financial Analysis (202) 586-1383. Specific technical information concerning this

483

SRNL - Directions and Maps  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Map of SRS, with Georgia and South Carolina Map of SRS, with Georgia and South Carolina Directions and Maps The Savannah River National Laboratory is located at the Savannah River Site , a 310 square mile site located in the southeastern coastal area of the United States in the state of South Carolina. It is bordered to the west by the Savannah River and Georgia, and is close to several major cities, including Augusta and Savannah (Ga.), Columbia, Greenville, and Charleston (S.C.). It is in an area residents refer to as the Central Savannah River Area, or CSRA. The Aiken County Technology Laboratory (which houses SRNL's biotechnology laboratories and certain waste treatment technology laboratories) and the Center for Hydrogen Research are located at Aiken County's Savannah River Research Campus, located adjacent to SRS.

484

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.

485

Memorandum: Direction and Guidance for Implementing Direct DOE Relationship  

Broader source: Energy.gov (indexed) [DOE]

Direction and Guidance for Implementing Direct DOE Direction and Guidance for Implementing Direct DOE Relationship & Funding for the EMSSAB Memorandum: Direction and Guidance for Implementing Direct DOE Relationship & Funding for the EMSSAB From: Designated Federal Officer, Sandra L. Waisley (EM-11) To: SSAB Members (G. Stegner, J. Reising, G. Bowman, T. Taylor, C. Gertz, B. Murphie, S. McCracken, M. Marvin, J. Rampe, A. Doswell, C. Anderson, B. Wethington, S. Brennan, K. Kozeliski, D. Dollins, P. Halsey, Y. Sherman, L. Bratcher, R. Warther, K. Klein, R. Schepens, F. Lockhart, J. Allison, R. Erickson, E. Sellers, K. Carlson, G. Boyd, R. Butler) The memorandum informs of Assistant Secrectary Roberson's direction and guidance for implementing a DOE direct relationship and funding approach for EM's Site-Specific Advisory Board (EMSSAB).

486

Global existence and $L^{p}$ convergence rates of planar waves for three-dimensional bipolar Euler-Poisson systems  

E-Print Network [OSTI]

In the paper, we consider a multi-dimensional bipolar hydrodynamic model from semiconductor devices and plasmas. This system takes the form of Euler-Poisson with electric field and frictional damping added to the momentum equations. We show the global existence and $L^{p}$ convergence rates of planar diffusion waves for multi-dimensional bipolar Euler-Poisson systems when the initial data are near the planar diffusive waves. A frequency decomposition and approximate Green function based on delicate energy method are used to get the optimal decay rates of the planar diffusion waves. To our knowledge, the $L^p(p\\in[2,+\\infty])$-convergence rate of planar waves improves the previous results about the $L^2$-convergence rates.

Jie Liao; Yeping Li

2015-01-24T23:59:59.000Z

487

Mutual diffusion in binary Ar-Kr mixtures and empirical diffusion models  

Science Journals Connector (OSTI)

Molecular dynamics simulations of four binary Ar-Kr mixtures are used to compute self- and mutual-diffusion coefficients. Results using mean squared displacements and using velocity correlation functions are presented. The diffusivity coefficients are also presented in the time and frequency domains where a comparatively low frequency structure is evident in some simulations. The computed diffusivities are dependent on the maximum time over which the velocity correlation functions are integrated and the time at which the Einstein relationships are evaluated. This dependence explains in part the small systematic differences between our results (20–80 ps) and earlier molecular dynamics results (<4 ps) in the system Ar-Kr. We compare the computed mutual diffusion coefficients to two empirical models, Darken’s model and the common force model. Darken’s model is consistent with our results over the entire frequency range we resolve. At frequencies lower than about 5 ps-1 Darken’s model and the common force model converge and we cannot discriminate between them. At higher frequencies the common force model prediction is significantly different from the computed mutual diffusion coefficient. Assumptions regarding the contribution of cross correlations that are implicit in the empirical models are discussed and tested against our simulation results. The net contribution of velocity cross correlations is found to be negligible, as is often assumed in deriving Darken’s model, but the individual cross-correlation terms are substantial and negative—a finding contrary to common assumptions. © 1996 The American Physical Society.

Yanhua Zhou and Gregory H. Miller

1996-02-01T23:59:59.000Z

488

Global warming and end-use efficiency implications of replacing CFCs  

SciTech Connect (OSTI)

The direct contribution of CFCs to calculated global warming has been recognized for some time. As a result of the international agreement to phase out CFCs due to stratospheric ozone and the ensuing search for suitable alternatives, there has recently been increased attention on the DIRECT global warming potential (GWP) of the fluorocarbon alternatives as greenhouse gases. However, to date there has been little focus on the INDIRECT global warming effect arising from end-use efficiency changes and associated CO{sub 2} emissions. A study being conducted at Oak Ridge National Laboratory (ORNL) addresses this combined or total global warming impact of viable options to replace CFCs in their major energy-related applications. This paper reviews selected results for air-conditioning, refrigeration, and heat pump applications. The analysis indicates that the CFC user industries have made substantial progress in approaching near-equal energy efficiency with the HCFC/HFC alternative refrigerants. The findings also bring into question the relative importance of the DIRECT (chemical-related) effect in many applications. Replacing CFCs is an important step in reducing the total global warming impact, and at present the HCFC and HFCS appear to offer the best efficiency and lowest total impact of options available in the relatively short time period required for the transition away from CFCs.

Fairchild, P.D.; Fischer, S.K.

1991-12-31T23:59:59.000Z

489

Diffusion in single crystals of melilite: 2. Cations  

SciTech Connect (OSTI)

Diffusion coefficients of divalent cations, Ni, Co, Fe, Mn, Ca, Sr, and Ba, in synthetic akermanite were determined by tracer-diffusion experiments. Diffusion coefficients of cation paris, Al + Al-Mg + Si, Al + Al-Co + Si, and Mg-Co in melilite solid-solution systems, were determined by coupled annealing of synthetic melilites of endmember compositions. Cobalt tracer diffuses slower along the c-crystallographic axis than along the a-axis by a factor of about three, possibly due to the anisotropic sheet-like arrangement of oxygen ions parallel to the (001) plane which is perpendicular to the c-axis in the crystal structure of melilite. In the coupled diffusion experiments, the cation pairs interdiffuse complementary, as expected for conservation of material and ionic charge balance in the substitution. The observed trend in the inter-diffusion coefficient vs. melting temperature relations is similar to those observed for alloys and consistent with an empirical rule for self-diffusion coefficient-melting temperature relation. In the diffusion coefficient vs. ionic radius diagram for divalent cation diffusion in akermanite, smooth curves were observed as in the case of olivine systems. However, the shapes of the curves were significantly different from those observed in olivine systems. The observed trend of diffusion coefficients with ionic radius can be explained on the basis of crystal structure-controlled diffusion in akermanite.

Morioka, Masana (Univ. of Tokyo Yayoi (Japan)); Nagasawa, Hiroshi (Gakushiun Univ. Mejiro, Tokyo (Japan))

1991-03-01T23:59:59.000Z

490

DOE Initiates Environmental Impact Statement for Global Nuclear...  

Office of Environmental Management (EM)

Environmental Impact Statement for Global Nuclear Energy Partnership Technology Demonstrations DOE Initiates Environmental Impact Statement for Global Nuclear Energy Partnership...

491

Rank and directional entropy Rank and directional entropy  

E-Print Network [OSTI]

Rank and directional entropy Rank and directional entropy E. Arthur (Robbie) Robinson (Joint work with Ayse Sahin) The George Washington University Talk at KIAS, Seoul, Korea. September 27, 2010 #12;Rank and directional entropy Outline 1 Introduction 2 Finite rank, Z case 3 The formal definition 4 The Z2 case 5

Robinson Jr., E. Arthur (Robbie)

492

The Impact of Thermal Conductivity and Diffusion Rates on Water Vapor Transport through Gas Diffusion Layers  

E-Print Network [OSTI]

Water management in a hydrogen polymer electrolyte membrane (PEM) fuel cell is critical for performance. The impact of thermal conductivity and water vapor diffusion coefficients in a gas diffusion layer (GDL) has been studied by a mathematical model. The fraction of product water that is removed in the vapour phase through the GDL as a function of GDL properties and operating conditions has been calculated and discussed. Furthermore, the current model enables identification of conditions when condensation occurs in each GDL component and calculation of temperature gradient across the interface between different layers, providing insight into the overall mechanism of water transport in a given cell design. Water transport mode and condensation conditions in the GDL components depend on the combination of water vapor diffusion coefficients and thermal conductivities of the GDL components. Different types of GDL and water removal scenarios have been identified and related to experimentally-determined GDL proper...

Burlatsky, S F; Gummallaa, M; Condita, D; Liua, F

2013-01-01T23:59:59.000Z

493

Iterative methods for solving space-time one dimensional multigroup diffusion equations  

Science Journals Connector (OSTI)

The numerical methods of Successive Overrelaxation (SOR), Successive-Line Overrelaxation (SLOR) and Alternating Direction Implicit (ADI) are used in this research to solve space-time one-dimensional diffusion equations. The results of this research have been compared with the ANL-Benchmark Problem BSS-6-A2. In general, the results are in agreement with the Argonne National Laboratory Benchmark Source Situation (BSS-6-A2). However, there is very little difference between SOR and ANL-BSS-6-A2 because of inner iterations in the SOR method. This research shows that the SLOR and ADI methods are more accurate and more efficient than the SOR method in solving space-time diffusion equations. SLOR is the most efficient in the case of a big number of mesh elements; however, the ADI method is the most efficient in the case of a small number of mesh elements.

Y. Yulianti; Z. Su'ud; A. Waris; S.N. Khotimah

2010-01-01T23:59:59.000Z

494

Intrauterine device for laser light diffusion and method of using the same  

DOE Patents [OSTI]

An improved device for delivery of photoenergy from a light source, such as a laser, into a uterine cavity for photodynamic therapy is comprised of a plurality of optic fibers, which are bundled together and inserted into the uterine cavity by means of a uterine cannula. The cannula is positioned within the uterine cavity at a preferred location and then withdrawn thereby allowing the plurality of optic fibers to splay or diverge one from the other within the cavity. Different portions of the distal tip of the optic fiber is provided with a light diffusing tip, the remainder being provided with a nondiffusing tip portion. The fiber optic shape, as well as the segment which is permitted to actively diffuse light through the tip, is selected in order to provide a more uniform exposure intensity of the photo energy or at least sufficient radiation directed to each segment of the uterine walls. 5 figs.

Tadir, Y.; Berns, M.W.; Svaasand, L.O.; Tromberg, B.J.

1995-12-26T23:59:59.000Z

495

Germanium diffusion during HfO{sub 2} growth on Ge by molecular beam epitaxy  

SciTech Connect (OSTI)

The authors study the Ge diffusion during HfO{sub 2} growth by molecular beam epitaxy on differently in situ prepared germanium substrates and at different growth temperatures. While HfO{sub 2} layers grown directly on Ge do not show any germanium contamination, oxygen rich interfacial layers such as GeO{sub x} or GeO{sub x}N{sub y} partly dissolve into the HfO{sub 2} layer, giving rise to high Ge contamination (from 1% to 10%). The use of nitridated interfacial layers does not prevent Ge diffusion into the HfO{sub 2} during the growth process because of the high oxygen content present in the nitridated germanium layer.

Ferrari, S.; Spiga, S.; Wiemer, C.; Fanciulli, M.; Dimoulas, A. [Laboratorio MDM-INFM-CNR, Via Olivetti, 2 Agrate Brianza, Milano 20041 (Italy); MBE Laboratory, Institute of Materials Science, DEMOKRITOS National Center for Scientific Research, 153 10 Athens (Greece)

2006-09-18T23:59:59.000Z

496

Effect of exposure environment on surface decomposition of SiC–silver ion implantation diffusion couples  

Science Journals Connector (OSTI)

Abstract SiC is a promising material for nuclear applications and is a critical component in the construction of tristructural isotropic (TRISO) fuel. A primary issue with TRISO fuel operation is the observed release of 110mAg from intact fuel particles. The release of Ag has prompted research efforts to directly measure the transport mechanism of Ag in bulk SiC. Recent experimental efforts have focused primarily on Ag ion implantation designs. The effect of the thermal exposure system on the ion implantation surface has been investigated. Results indicate the utilization of a mated sample geometry and the establishment of a static thermal exposure environment is critical to maintaining an intact surface for diffusion analysis. The nature of the implantation surface and its potential role in Ag diffusion analysis are discussed.

Tyler J. Gerczak; Guiqiu Zheng; Kevin G. Field; Todd R. Allen

2015-01-01T23:59:59.000Z

497

Intrauterine device for laser light diffusion and method of using the same  

DOE Patents [OSTI]

An improved device for delivery of photoenergy from a light source, such as a laser, into a uterine cavity for photodynamic therapy is comprised of a plurality of optic fibers, which are bundled together and inserted into the uterine cavity by means of a uterine cannula. The cannula is positioned within the uterine cavity at a preferred location and then withdrawn thereby allowing the plurality of optic fibers to splay or diverge one from the other within the cavity. Different portions of the distal tip of the optic fiber is provided with a light diffusing tip, the remainder being provided with a nondiffusing tip portion. The fiber optic shape, as well as the segment which is permitted to actively diffuse light through the tip, is selected in order to provide a more uniform exposure intensity of the photo energy or at least sufficient radiation directed to each segment of the uterine walls.

Tadir, Yona (Irvine, CA); Berns, Michael W. (Trabuco Canyon, CA); Svaasand, Lars O. (Trondheim, NO); Tromberg, Bruce J. (Irvine, CA)

1995-01-01T23:59:59.000Z

498

Bioenergy Technologies Office New Directions  

Broader source: Energy.gov [DOE]

New Directions and New Business Opportunities for BETO Valerie Reed, Acting Director, BETO, U.S. Department of Energy

499

Multiple direction vibration fixture  

DOE Patents [OSTI]

An apparatus for simulating a rocket launch environment on a test item undergoing centrifuge testing by subjecting the item simultaneously or separately to vibration along an axis of centripetal force and along an axis perpendicular to the centripetal force axis. The apparatus includes a shaker motor supported by centrifuge arms and a right angle fixture pivotally connected to one of the shaker motor mounts. When the shaker motor vibrates along the centripetal force axis, the vibrations are imparted to a first side of the right angle fixture. The vibrations are transmitted 90 degrees around the pivot and are directed to a second side of the right angle fixture which imparts vibrations perpendicular to the centripetal force axis. The test item is in contact with a third side of the right angle fixture and receives both centripetal-force-axis vibrations and perpendicular axis vibrations simultaneously. A test item can be attached to the third side near the flexible coupling or near the air bag to obtain vibrations along the centripetal force axis or transverse to the centripetal force axis.

Cericola, Fred (Albuquerque, NM); Doggett, James W. (Albuquerque, NM); Ernest, Terry L. (Albuquerque, NM); Priddy, Tommy G. (Rockville, MD)

1991-01-01T23:59:59.000Z

500

Developing A Laser Shockwave Model For Characterizing Diffusion Bonded Interfaces  

SciTech Connect (OSTI)

12. Other advances in QNDE and related topics: Preferred Session Laser-ultrasonics Developing A Laser Shockwave Model For Characterizing Diffusion Bonded Interfaces 41st Annual Review of Progress in Quantitative Nondestructive Evaluation Conference QNDE Conference July 20-25, 2014 Boise Centre 850 West Front Street Boise, Idaho 83702 James A. Smith, Jeffrey M. Lacy, Barry H. Rabin, Idaho National Laboratory, Idaho Falls, ID ABSTRACT: The US National Nuclear Security Agency has a Global Threat Reduction Initiative (GTRI) which is assigned with reducing the worldwide use of high-enriched uranium (HEU). A salient component of that initiative is the conversion of research reactors from HEU to low enriched uranium (LEU) fuels. An innovative fuel is being developed to replace HEU. The new LEU fuel is based on a monolithic fuel made from a U-Mo alloy foil encapsulated in Al-6061 cladding. In order to complete the fuel qualification process, the laser shock technique is being developed to characterize the clad-clad and fuel-clad interface strengths in fresh and irradiated fuel plates. The Laser Shockwave Technique (LST) is being investigated to characterize interface strength in fuel plates. LST is a non-contact method that uses lasers for the generation and detection of large amplitude acoustic waves to characterize interfaces in nuclear fuel plates. However the deposition of laser energy into the containment layer on specimen’s surface is intractably complex. The shock wave energy is inferred from the velocity on the backside and the depth of the impression left on the surface from the high pressure plasma pulse created by the shock laser. To help quantify the stresses and strengths at the interface, a finite element model is being developed and validated by comparing numerical and experimental results for back face velocities and front face depressions with experimental results. This paper will report on initial efforts to develop a finite element model for laser shock.

James A. Smith; Jeffrey M. Lacy; Barry H. Rabin

2014-07-01T23:59:59.000Z