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Note: This page contains sample records for the topic "diagnostic analyses ecmwf" from the National Library of EnergyBeta (NLEBeta).
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1

Climate Diagnostics from Global Analyses: Conservation of Mass in ECMWF Analyses  

Science Conference Proceedings (OSTI)

The extent to which mass is conserved in European Centre for Medium Range Weather Forecasts (ECMWF) analyses archived on pressure surfaces is examined from two perspectives and with two different datasets. The data used come from the WMO archive ...

Kevin E. Trenberth

1991-07-01T23:59:59.000Z

2

Validation of ECMWF Sea Level Pressure Analyses over the Bellingshausen Sea, Antarctica  

Science Conference Proceedings (OSTI)

Surface pressure measurements from instruments deployed on ice floes in the southern Bellingshausen Sea were used to assess the accuracy of European Centre for Medium-Range Weather Forecasts (ECMWF) analyses in this region during February–May ...

J. C. King

2003-06-01T23:59:59.000Z

3

Explosive East Coast Cyclogenesis over the West-Central North Atlantic Ocean: A Composite Study Derived from ECMWF Operational Analyses  

Science Conference Proceedings (OSTI)

This paper describes the observational aspects of explosive East Coast cyclogenesis using composites constructed from the daily global analyses generated and archived by the European Center for Medium Range Weather Forecasts (ECMWF). An ...

John Manobianco

1989-11-01T23:59:59.000Z

4

Soil Moisture Analyses at ECMWF: Evaluation Using Global Ground-Based In Situ Observations  

Science Conference Proceedings (OSTI)

In situ soil moisture from 117 stations across the world and under different biome and climate conditions are used to evaluate two soil moisture products from the European Centre for Medium-Range Weather Forecasts (ECMWF)—namely, the operational ...

C. Albergel; P. de Rosnay; G. Balsamo; L. Isaksen; J. Muñoz-Sabater

2012-10-01T23:59:59.000Z

5

Diagnostic Comparison of Meteorological Analyses during the 2002 Antarctic Winter  

Science Conference Proceedings (OSTI)

Several meteorological datasets, including U.K. Met Office (MetO), European Centre for Medium-Range Weather Forecasts (ECMWF), National Centers for Environmental Prediction (NCEP), and NASA’s Goddard Earth Observation System (GEOS-4) analyses, ...

Gloria L. Manney; Douglas R. Allen; Kirstin Krüger; Barbara Naujokat; Michelle L. Santee; Joseph L. Sabutis; Steven Pawson; Richard Swinbank; Cora E. Randall; Adrian J. Simmons; Craig Long

2005-05-01T23:59:59.000Z

6

Comparison between Nimbus-7 SMMR and ECMWF Model Analyses: The Problem of the Surface Latent Heat Flux  

Science Conference Proceedings (OSTI)

Nimbus-7 SMMR data of sea surface temperature, surface wind and precipitable water are compared to the ECMWF model daily analyzes for the first Special Observing Period of the FGGE Period (January-February 1979). The comparison of these fields ...

L. Eymard; C. Klapisz; R. Bernard

1989-12-01T23:59:59.000Z

7

The Troposphere-to-Stratosphere Transition in Kinetic Energy Spectra and Nonlinear Spectral Fluxes as Seen in ECMWF Analyses  

Science Conference Proceedings (OSTI)

Global horizontal wavenumber kinetic energy spectra and spectral fluxes of rotational kinetic energy and enstrophy are computed for a range of vertical levels using a T799 ECMWF operational analysis. Above 250 hPa, the kinetic energy spectra ...

B. H. Burgess; Andre R. Erler; Theodore G. Shepherd

2013-02-01T23:59:59.000Z

8

Verification of TMI-Adjusted Rainfall Analyses of Tropical Cyclones at ECMWF Using TRMM Precipitation Radar  

Science Conference Proceedings (OSTI)

A validation of passive microwave–adjusted rainfall analyses of tropical cyclones using spaceborne radar data is presented. This effort is part of the one-dimensional plus four-dimensional variational (1D+4D-Var) rain assimilation project that is ...

A. Benedetti; P. Lopez; E. Moreau; P. Bauer; V. Venugopal

2005-11-01T23:59:59.000Z

9

ECMWF Analyses and Forecasts of Stratospheric Winter Polar Vortex Breakup: September 2002 in the Southern Hemisphere and Related Events  

Science Conference Proceedings (OSTI)

Breakup of the polar stratospheric vortex in the Northern Hemisphere is an event that is known to be predictable for up to a week or so ahead. This is illustrated using data from the 45-yr ECMWF Re-Analysis (ERA-40) for the sudden warmings of ...

Adrian Simmons; Mariano Hortal; Graeme Kelly; Anthony McNally; Agathe Untch; Sakari Uppala

2005-03-01T23:59:59.000Z

10

A Two?Week Evaluation of Available Potential Energy and Kinetic Energy from NMC and ECMWF Analyses  

Science Conference Proceedings (OSTI)

Available potential energy and kinetic energy distributions for the Northern Hemisphere computed from the FGGE Level IIIa analyses produced at the National Meteorological Center (NMC) and the Level IIIb analyses prepared at the European Centre ...

Thomas L. Koehler; Linda M. Whittaker

1985-05-01T23:59:59.000Z

11

A Comparison of Winds Observed at Christmas Island using a Wind-Profiling Doppler Radar with NMC and ECMWF Analyses  

Science Conference Proceedings (OSTI)

Wind profilers can provide useful wind data from remote regions of the globe, and incorporation of upper-level wind profiler data into analysis products can significantly improve the quality of analyses in data sparse regions.

Kenneth S. Gage; John R. McAfee; Ben Balsley; William G. Collins; Daniel Söderman; Horst Böttger; Alan Radford

1988-09-01T23:59:59.000Z

12

ARM - Campaign Instrument - ecmwf  

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

1-888-ARM-DATA. Send Campaign Instrument : European Centre for Medium Range Weather Forecasts Model Data (ECMWF) Instrument Categories Derived Quantities and Models Campaigns...

13

ARM - Instrument - ecmwf  

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

call us at 1-888-ARM-DATA. Send Instrument : European Centre for Medium Range Weather Forecasts Model Data (ECMWF) Instrument Categories Derived Quantities and Models General...

14

ECMWF Seminar on Diagnosis of Forecasting and Data Assimilation Systems, 7-10 September 2009 205 The Use of Tracers as Diagnostics for Model Development  

E-Print Network (OSTI)

emissions of CFCs and SF6 are often related to the `electrical power grid distributions); tropospheric #12ECMWF Seminar on Diagnosis of Forecasting and Data Assimilation Systems, 7-10 September 2009 205/sinks and incomplete observational data sets. In addition, the importance of models' transport capabilities vis

15

Maike Ahlgrimm, Martin Köhler, Anton Beljaars, ECMWF  

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

shallow convective cloudiness across ECMWF model cycles Maike Ahlgrimm, Martin Khler, Anton Beljaars, ECMWF 1 The improvement of boundary layer processes (including shallow...

16

A Test of the ECMWF Model in Tropical Synoptic-Scale Diagnosis  

Science Conference Proceedings (OSTI)

The originally disseminated ECMWF-FGGE analyses for January and February 1979 are used to study the model performance in the deep tropics. Vertical velocities representing both the normal-mode initialized and uninitialized synoptic-scale flow are ...

Ray-qing Lin; Donald R. Mock

1986-08-01T23:59:59.000Z

17

Upper-Tropospheric Humidity from MLS and ECMWF Reanalyses  

Science Conference Proceedings (OSTI)

This paper compares upper-tropospheric humidity from the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite with European Centre for Medium-Range Weather Forecasts (ECMWF) data. MLS measurements are not included in the ECMWF ...

H. L. Clark; R. S. Harwood

2003-03-01T23:59:59.000Z

18

RAMI Analyses of Heating Neutral Beam and Diagnostic Neutral Beam Systems for ITER  

SciTech Connect

A RAMI (Reliability, Availability, Maintainability, Inspectability) analysis has been performed for the heating (and current drive) neutral beam (HNB) and diagnostic neutral beam (DNB) systems of the ITER device. The objective of these analyses is to implement RAMI engineering requirements for design and testing to prepare a reliability-centred plan for commissioning, operation, and maintenance of the system in the framework of technical risk control to support the overall ITER Project. These RAMI requirements will correspond to the RAMI targets for the ITER project and the compensating provisions to reach them as deduced from the necessary actions to decrease the risk level of the function failure modes. The RAMI analyses results have to match with the procurement plan of the systems.

Chang, D. H. [Korea Atomic Energy Research Institute(KAERI), Daejeon 305-353 (Korea, Republic of); Lee, S. [ITER-Korea Domestic Agency, National Fusion Research Institute(NFRI), Daejeon 305-333 (Korea, Republic of); Hemsworth, R.; Houtte, D. van; Okayama, K.; Sagot, F.; Schunke, B.; Svensson, L. [ITER Organization, 13067 St. Paul-lez-Durance Cedex (France)

2011-09-26T23:59:59.000Z

19

Convergence and Disposal of Energy and Moisture on the Antarctic Polar Cap from ECMWF Reanalyses and Forecasts  

Science Conference Proceedings (OSTI)

Diagnostics of energy and moisture transport and disposal over the Antarctic polar cap (70°S to the pole) and ice sheet are extracted from the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis archive over the 1979–93 period. ...

Christophe Genthon; Gerhard Krinner

1998-07-01T23:59:59.000Z

20

A Comparison of Divergent Winds from the National Meteorological Center and the European Centre for Medium Range Weather Forecasts Global Analyses for 1980–1986  

Science Conference Proceedings (OSTI)

A comparison is made of the divergent wind analyses of the National Meteorological Center (NMC) and those of the ECMWF/WMO dataset produced by the European Centre for Medium Range Weather Forecasts (ECMWF). Using a reliability criterion based on ...

Steven J. Lambert

1989-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Assimilation of MODIS Cloud Optical Depths in the ECMWF Model  

Science Conference Proceedings (OSTI)

At the European Centre for Medium-Range Weather Forecasts (ECMWF), a large effort has recently been devoted to define and implement moist physics schemes for variational assimilation of rain- and cloud-affected brightness temperatures. This study ...

Angela Benedetti; Marta Janisková

2008-05-01T23:59:59.000Z

22

A Reduced Radiation Grid for the ECMWF Integrated Forecasting System  

Science Conference Proceedings (OSTI)

A specific interface between the radiation transfer calculations and the rest of the ECMWF model was introduced in 2003, potentially providing substantial economy in computer time by reducing the spatial resolution at which radiation transfer is ...

Jean-Jacques Morcrette; George Mozdzynski; Martin Leutbecher

2008-12-01T23:59:59.000Z

23

Factors Influencing Skill Improvements in the ECMWF Forecasting System  

Science Conference Proceedings (OSTI)

During the past 30 years the skill in ECMWF numerical forecasts has steadily improved. There are three major contributing factors: 1) improvements in the forecast model, 2) improvements in the data assimilation, and 3) the increased number of ...

Linus Magnusson; Erland Källén

2013-09-01T23:59:59.000Z

24

Impact of Changes to the Radiation Transfer Parameterizations Plus Cloud Optical. Properties in the ECMWF Model  

Science Conference Proceedings (OSTI)

A new radiation package, shown to correct most of the systematic errors of the operational ECMWF radiation scheme, has been extensively tested in the ECMWF forecast model. Improvements in the clear-sky fluxes and radiative heating/cooling rate ...

Jean-Jacques Morcrette

1990-04-01T23:59:59.000Z

25

Diagnostic Study of Explosive Cyclogenesis during FGGE  

Science Conference Proceedings (OSTI)

Two rapidly developing extratropical maritime cyclones are studied using the European Centre for Medium-range Weather Forecasting (ECMWF) level III-b analyses from the First GARP Global Experiment (FGGE). The first cyclone forms over the western ...

Carlyle H. Wash; James E. Peak; Wynn E. Calland; William A. Cook

1988-02-01T23:59:59.000Z

26

Evaluation of Forecasted Southeast Pacific Stratocumulus in the NCAR, GFDL and ECMWF Models  

SciTech Connect

We examine forecasts of Southeast Pacific stratocumulus at 20S and 85W during the East Pacific Investigation of Climate (EPIC) cruise of October 2001 with the ECMWF model, the Atmospheric Model (AM) from GFDL, the Community Atmosphere Model (CAM) from NCAR, and the CAM with a revised atmospheric boundary layer formulation from the University of Washington (CAM-UW). The forecasts are initialized from ECMWF analyses and each model is run for 3 days to determine the differences with the EPIC field data. Observations during the EPIC cruise show a stable and well-mixed boundary layer under a sharp inversion. The inversion height and the cloud layer have a strong and regular diurnal cycle. A key problem common to the four models is that the forecasted planetary boundary layer (PBL) height is too low when compared to EPIC observations. All the models produce a strong diurnal cycle in the Liquid Water Path (LWP) but there are large differences in the amplitude and the phase compared to the EPIC observations. This, in turn, affects the radiative fluxes at the surface. There is a large spread in the surface energy budget terms amongst the models and large discrepancies with observational estimates. Single Column Model (SCM) experiments with the CAM show that the vertical pressure velocity has a large impact on the PBL height and LWP. Both the amplitude of the vertical pressure velocity field and its vertical structure play a significant role in the collapse or the maintenance of the PBL.

Hannay, C; Williamson, D L; Hack, J J; Kiehl, J T; Olson, J G; Klein, S A; Bretherton, C S; K?hler, M

2008-01-24T23:59:59.000Z

27

ARM - Publications: Science Team Meeting Documents: Comparison of ECMWF  

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

Comparison of ECMWF Model and ARSCL Cloudiness at the ARM SGP site Comparison of ECMWF Model and ARSCL Cloudiness at the ARM SGP site Kollias, Pavlos RSMAS/University of Miami Albrecht, Bruce University of Miami The Department of Energy (DOE) Atmospheric Radiation Measurements (ARM) Program operates a comprehensive suite of active remote sensors at Southern Great Plains (SGP) in Oklahoma since 1996 to detect all hydrometeors in the atmospheric column above. Due to its location, the ARM SGP site cloud and precipitation climatology it is believed to be representative of mid-latitudes. Long-term (6.5 years) observations from this ARM site are used to provide a cloud and precipitation climatology. A cloud classification scheme based on cloud base height, fractional coverage, cloud thickness, cloud reflectivity and precipitation detection at the

28

Case Studies of African Wave Disturbances in Gridded Analyses  

Science Conference Proceedings (OSTI)

African wave disturbances (AWDs), an important trigger of Sahel summer rainfall, are studied using ECMWF gridded datasets for July and August 1987 and 1988. Power spectra of time series of 700-mb meridional winds near Niamey taken from analyses ...

Leonard M. Druyan; Patrick Lonergan; Judah Cohen

1997-10-01T23:59:59.000Z

29

A PGAS Implementation by Co-design of the ECMWF Integrated Forecasting System (IFS)  

Science Conference Proceedings (OSTI)

Today the European Centre for Medium-Range Weather Forecasts (ECMWF) runs a 16 km global T1279 operational weather forecast model using 1,536 cores of an IBM Power7. Following the historical evolution in resolution upgrades, ECMWF could expect to be ... Keywords: PGAS, COARRAYS, FORTRAN2008, CRESTA,

George Mozdzynski, Mats Hamrud, Nils Wedi, Jens Doleschal, Harvey Richardson

2012-11-01T23:59:59.000Z

30

Probabilistic Forecast Calibration Using ECMWF and GFS Ensemble Reforecasts. Part I: Two-Meter Temperatures  

E-Print Network (OSTI)

Probabilistic Forecast Calibration Using ECMWF and GFS Ensemble Reforecasts. Part I: Two-Meter Temperatures RENATE HAGEDORN European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom THOMAS for Medium-Range Weather Forecasts (ECMWF) produced a reforecast dataset for a 2005 version of their ensemble

Hamill, Tom

31

Error Estimates for Ocean Surface Winds: Applying Desroziers Diagnostics to the Cross-Calibrated, Multiplatform Analysis of Wind Speed  

Science Conference Proceedings (OSTI)

The Desroziers diagnostics (DD) are applied to the cross-calibrated, multi-platform (CCMP) ocean surface wind data sets to estimate wind speed errors of the ECMWF background, the microwave satellite observations and the resulting CCMP analysis. ...

Ross N. Hoffman; Joseph V. Ardizzone; S. Mark Leidner; Deborah K. Smith; Robert Atlas

32

A Study of Eddy-induced Fluctuations of the Zonal-Mean Wind Using Conventional and Transformed Eulerian Diagnostics  

Science Conference Proceedings (OSTI)

The dynamics of eddy-induced fluctuations of the zonal-mean current in the troposphere and lower stratosphere is examined from the perspective of conventional and transformed Eulerian diagnostics using ECMWF FGGE IIIb data. Spatial correlations ...

Richard L. Pfeffer

1992-06-01T23:59:59.000Z

33

Experimental 4D-Var Assimilation of SYNOP Rain Gauge Data at ECMWF  

Science Conference Proceedings (OSTI)

Four-dimensional variational data assimilation (4D-Var) experiments with 6-hourly rain gauge accumulations observed at synoptic stations (SYNOP) around the globe have been run over several months, both at high resolution in an ECMWF operations-...

Philippe Lopez

2013-05-01T23:59:59.000Z

34

Dynamical Properties of MOS Forecasts: Analysis of the ECMWF Operational Forecasting System  

Science Conference Proceedings (OSTI)

The dynamical properties of ECMWF operational forecasts corrected by a (linear) model output statistics (MOS) technique are investigated, in light of the analysis performed in the context of low-order chaotic systems. Based on the latter work, ...

S. Vannitsem

2008-10-01T23:59:59.000Z

35

Comparison of the ECMWF Reanalysis with FIRE I Observations: Diurnal Variation of Marine Stratocumulus  

Science Conference Proceedings (OSTI)

The European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA) results for July 1987 are compared with stratocumulus observations for the same period made during the First International Satellite Cloud Climatology Project (ISCCP) ...

Peter G. Duynkerke; João Teixeira

2001-04-01T23:59:59.000Z

36

An Improved Snow Scheme for the ECMWF Land Surface Model: Description and Offline Validation  

Science Conference Proceedings (OSTI)

A new snow scheme for the European Centre for Medium-Range Weather Forecasts (ECMWF) land surface model has been tested and validated. The scheme includes a new parameterization of snow density, incorporating a liquid water reservoir, and revised ...

Emanuel Dutra; Gianpaolo Balsamo; Pedro Viterbo; Pedro M. A. Miranda; Anton Beljaars; Christoph Schär; Kelly Elder

2010-08-01T23:59:59.000Z

37

A Planetary Boundary Layer Height Climatology Derived from ECMWF Reanalysis Data  

Science Conference Proceedings (OSTI)

A planetary boundary layer (PBL) height climatology from ECMWF reanalysis data is generated and analyzed. Different methods are first compared to derive PBL heights from atmospheric temperature, pressure, and relative humidity (RH), which mostly ...

Axel von Engeln; João Teixeira

2013-09-01T23:59:59.000Z

38

Poleward Atmospheric Energy Transports and Their Variability as Evaluated from ECMWF Reanalysis Data  

Science Conference Proceedings (OSTI)

The vertically integrated global energy budget is evaluated with a direct and an indirect method (both corrected for mass inconsistencies of the forecast model), mainly using the European Centre for Medium-Range Weather Forecasts (ECMWF) Re-...

Michael Mayer; Leopold Haimberger

2012-01-01T23:59:59.000Z

39

Evaluation of Forecasted Southeast Pacific Stratocumulus in the NCAR, GFDL, and ECMWF Models  

Science Conference Proceedings (OSTI)

Forecasts of southeast Pacific stratocumulus at 20°S and 85°W during the East Pacific Investigation of Climate (EPIC) cruise of October 2001 are examined with the ECMWF model, the Atmospheric Model (AM) from GFDL, the Community Atmosphere Model (...

Cécile Hannay; David L. Williamson; James J. Hack; Jeffrey T. Kiehl; Jerry G. Olson; Stephen A. Klein; Christopher S. Bretherton; Martin Köhler

2009-06-01T23:59:59.000Z

40

Probabilistic Forecast Calibration Using ECMWF and GFS Ensemble Reforecasts. Part I: Two-Meter Temperatures  

Science Conference Proceedings (OSTI)

Recently, the European Centre for Medium-Range Weather Forecasts (ECMWF) produced a reforecast dataset for a 2005 version of their ensemble forecast system. The dataset consisted of 15-member reforecasts conducted for the 20-yr period 1982–2001, ...

Renate Hagedorn; Thomas M. Hamill; Jeffrey S. Whitaker

2008-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Regional Differences in the Prediction of Extratropical Cyclones by the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

A regional study of the prediction of extratropical cyclones by the European Centre for Medium-Range Weather Forecasts (ECMWF) Ensemble Prediction System (EPS) has been performed. An objective feature-tracking method has been used to identify and ...

Lizzie S. R. Froude

2009-03-01T23:59:59.000Z

42

Surface Energy and Water Balance for the Arkansas–Red River Basin from the ECMWF Reanalysis  

Science Conference Proceedings (OSTI)

Average surface energy and water budgets, subsurface variables, and atmospheric profiles were computed online with an hourly timescale from the ECMWF reanalysis for five subbasins of the Mississippi River from 1985–93. The results for the ...

Alan K. Betts; Pedro Viterbo; Eric Wood

1998-11-01T23:59:59.000Z

43

The Sensitivity of the ECMWF Model to the Parameterization of Evaporation from the Tropical Oceans  

Science Conference Proceedings (OSTI)

Stimulated by the results of a simple SST anomaly experiment with the ECMWF forecast model, a study was carried out to examine the model parameterization of evaporation from the tropica] oceans. In earlier versions of the model, these fluxes were ...

M. J. Miller; A. C. M. Beljaars; T. N. Palmer

1992-05-01T23:59:59.000Z

44

Clear-Sky Window Channel Radiances: A Comparison between Observations and the ECMWF Model  

Science Conference Proceedings (OSTI)

A comparison of clear-sky radiances of the Meteosat window channel with the European Centre for Medium-Range Weather Forecasts (ECMWF) model results is presented, aiming to assess both the model's performance and the quality of the observations. ...

Isabel F. Trigo; Pedro Viterbo

2003-10-01T23:59:59.000Z

45

Assessment of the ECMWF Model Cloudiness and Surface Radiation Fields at the ARM SGP Site  

Science Conference Proceedings (OSTI)

The cloud and radiation fields produced by the operational ECMWF forecasts are assessed using observations from the Atmospheric Radiation Measurement Program (ARM) Southern Great Plains (SGP) site over the April–May 1999 period. Over the first 36 ...

Jean-Jacques Morcrette

2002-02-01T23:59:59.000Z

46

An Evaluation of Monthly Mean MSU and ECMWF Global Atmospheric Temperatures for Monitoring Climate  

Science Conference Proceedings (OSTI)

Monthly mean brightness temperature anomalies derived from channel 2 of the microwave sounding units (M5Us) on board NOAA satellites over the past decade are examined and compared with both weighted and pressure-level ECMWF monthly mean ...

James W. Hurrell; Kevin E. Trenberth

1992-12-01T23:59:59.000Z

47

The Atmospheric Hydrologic Cycle over the Southern Ocean and Antarctica from Operational Numerical Analyses  

Science Conference Proceedings (OSTI)

Moisture budget calculations for Antarctica and the Southern Ocean (40°–72deg;S) are performed using operational numerical analyses from the European Centre for Medium-Range Weather Forecasts (ECMWF), the National Meteorological Center (NMC), and ...

David H. Bromwich; Frank M. Robasky; Richard I. Cullather; Michael L. Van Woert

1995-12-01T23:59:59.000Z

48

Underestimation of Latent and Sensible Heat Fluxes above the Agulhas Current in NCEP and ECMWF Analyses  

Science Conference Proceedings (OSTI)

The Agulhas Current is the major western boundary current of the Southern Hemisphere. South of Africa it retroflects back into the southwest Indian Ocean, transporting relatively warm water into the midlatitudes. Large sensible and latent heat ...

M. Rouault; C. J. C. Reason; J. R. E. Lutjeharms; A. C. M. Beljaars

2003-02-01T23:59:59.000Z

49

Comparison of Water Vapor Measurements with Data Retrieved from ECMWF Analyses during the POLINAT Experiment  

Science Conference Proceedings (OSTI)

During the POLINAT (Pollution from Aircraft Emissions in the North Atlantic Flight Corridor) experiment, water vapor content was measured with a frost-point hygrometer on board the DLR (Deutsche Forschungsanstalt für Luft-und-Raumfahrt) Falcon ...

Joëlle Ovarlez; Peter van Velthoven

1997-10-01T23:59:59.000Z

50

Wind Forcing over the Southwest Atlantic: Comparison between Observations and ECMWF Analyses  

Science Conference Proceedings (OSTI)

Oceanic variability in the southwest Atlantic is dominated by temporal scales at the annual, semiannual, and few-month periods. It is now examined if the timescales present in the local wind forcing (wind vector and wind stress curl) match the ...

Christelle Escoffier; Christine Provost

1995-05-01T23:59:59.000Z

51

Direct 4D-Var Assimilation of NCEP Stage IV Radar and Gauge Precipitation Data at ECMWF  

Science Conference Proceedings (OSTI)

Direct four-dimensional variational data assimilation (4D-Var) of NCEP stage IV radar and gauge precipitation observations over the eastern United States has been developed and tested in ECMWF’s global Integrated Forecasting System. This is the ...

Philippe Lopez

2011-07-01T23:59:59.000Z

52

Implementation of the Semi-Lagrangian Method in a High-Resolution Version of the ECMWF Forecast Model  

Science Conference Proceedings (OSTI)

In this article the implementation of the semi-Lagrangian method in a high-resolution version of the ECMWF forecast model is examined. Novel aspects include the application of the semi-Lagrangian scheme to a global model using the ECMWF hybrid ...

Harold Ritchie; Clive Temperton; Adrian Simmons; Mariano Hortal; Terry Davies; David Dent; Mats Hamrud

1995-02-01T23:59:59.000Z

53

Evaluation of Atmospheric Fields from the ECMWF Seasonal Forecasts over a 15-Year Period  

Science Conference Proceedings (OSTI)

Since 1997, the European Centre for Medium-Range Weather Forecasts (ECMWF) has made seasonal forecasts with ensembles of a coupled ocean–atmosphere model, System-1 (S1). In January 2002, a new version, System-2 (S2), was introduced. For the ...

Geert Jan van Oldenborgh; Magdalena A. Balmaseda; Laura Ferranti; Timothy N. Stockdale; David L. T. Anderson

2005-08-01T23:59:59.000Z

54

The Skill of ECMWF Medium-Range Forecasts during the Year of Tropical Convection 2008  

Science Conference Proceedings (OSTI)

This study uses the European Centre for Medium-Range Weather Forecasts (ECMWF) model-generated high-resolution 10-day-long predictions for the Year of Tropical Convection (YOTC) 2008. Precipitation forecast skills of the model over the tropics ...

Arindam Chakraborty

2010-10-01T23:59:59.000Z

55

Analysis of the Spread–Skill Relations Using the ECMWF Ensemble Prediction System over Europe  

Science Conference Proceedings (OSTI)

The Ensemble Prediction System (EPS) of the European Centre for Medium-Range Weather Forecasts (ECMWF) was used to analyze various aspects of the ensemble-spread forecast-skill relation. It was shown that synoptic-scale upper-air spread measures ...

Simon C. Scherrer; Christof Appenzeller; Pierre Eckert; Daniel Cattani

2004-06-01T23:59:59.000Z

56

Asian summer monsoon prediction in ECMWF System 4 and NCEP CFSv2 retrospective seasonal forecasts  

E-Print Network (OSTI)

Asian summer monsoon prediction in ECMWF System 4 and NCEP CFSv2 retrospective seasonal forecasts.com Abstract The seasonal prediction skill of the Asian summer monsoon is assessed using retrospective predic and the maritime continent. The southwest monsoon flow and the Somali Jet are stronger in SYS4, while the south

Webster, Peter J.

57

ECMWF and ERS-1 Surface Winds over the Arabian Sea during July 1995  

Science Conference Proceedings (OSTI)

The European Centre for Medium-Range Weather Forecasts (ECMWF) and Institut Francais Pour la Recherche et l’Exploitation de la Mer European Remote-Sensing Satellite, named IFR2, surface wind velocity data products are compared during July 1995 ...

David Halpern; Michael H. Freilich; Robert A. Weller

1999-07-01T23:59:59.000Z

58

Impact of a New Radiation Package, McRad, in the ECMWF Integrated Forecasting System  

Science Conference Proceedings (OSTI)

A new radiation package, “McRad,” has become operational with cycle 32R2 of the Integrated Forecasting System (IFS) of the European Centre for Medium-Range Weather Forecasts (ECMWF). McRad includes an improved description of the land surface ...

J-J. Morcrette; H. W. Barker; J. N. S. Cole; M. J. Iacono; R. Pincus

2008-12-01T23:59:59.000Z

59

An Improved Land Surface Parameterization Scheme in the ECMWF Model and Its Validation  

Science Conference Proceedings (OSTI)

A new version of the ECMWF land surface parameterization scheme is described. It has four prognostic layers in the soil for temperature and soil moisture, with a free drainage and a zero heat flux condition at the bottom as a boundary condition. ...

Pedro Viterbo; Anton C. M. Beljaars

1995-11-01T23:59:59.000Z

60

Probabilistic Forecast Calibration Using ECMWF and GFS Ensemble Reforecasts. Part II: Precipitation  

E-Print Network (OSTI)

Probabilistic Forecast Calibration Using ECMWF and GFS Ensemble Reforecasts. Part II: Precipitation for Medium-Range Weather Forecasts, Reading, United Kingdom JEFFREY S. WHITAKER NOAA/Earth System Research As a companion to Part I, which discussed the calibration of probabilistic 2-m temperature forecasts using large

Hamill, Tom

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


61

An Evaluation and Intercomparison of Global Analyses from the National Meteorological Center and the European Centre for Medium Range Weather Forecasts  

Science Conference Proceedings (OSTI)

In order to help establish a global climate record data sets of global analyses from the U.S. National Meteorological Center (NMC) and the European Centre for Medium Range Weather Forecasts (ECMWF) have been comprehensively evaluated.

Kevin E. Trenberth; Jerry G. Olson

1988-09-01T23:59:59.000Z

62

The Mean Evolution and Variability of the Asian Summer Monsoon: Comparison of ECMWF and NCEP–NCAR Reanalyses  

Science Conference Proceedings (OSTI)

The behavior of the Asian summer monsoon is documented and compared using the European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis (ERA) and the National Centers for Environmental Prediction–National Center for Atmospheric ...

H. Annamalai; J. M. Slingo; K. R. Sperber; K. Hodges

1999-06-01T23:59:59.000Z

63

Potential Forecast Skill of Ensemble Prediction and Spread and Skill Distributions of the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

Ensemble forecasting is a feasible method to integrate a deterministic forecast with an estimate of the probability distribution of atmospheric states. At the European Centre for Medium-Range Weather Forecasts (ECMWF), the Ensemble Prediction ...

Roberto Buizza

1997-01-01T23:59:59.000Z

64

Improving the representation of low clouds and drizzle in the ECMWF model based on ARM observations from the Azores.  

Science Conference Proceedings (OSTI)

In this study, the representation of marine boundary layer cloud is investigated in the ECMWF model using observations from the Atmospheric Radiation Measurement (ARM) mobile facility deployment to Graciosa Island in the North Atlantic. Systematic ...

Maike Ahlgrimm; Richard Forbes

65

Comparison of the Land-Surface Interaction in the ECMWF Reanalysis Model with the 1987 FIFE Data  

Science Conference Proceedings (OSTI)

Data from the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment for the summer season of 1987 are used to assess the land-surface interaction of the ECMWF reanalysis. In comparison with an earlier study, ...

Alan K. Betts; Pedro Viterbo; Anton C. M. Beljaars

1998-01-01T23:59:59.000Z

66

Improved Middle Atmosphere Climate and Forecasts in the ECMWF Model through a Nonorographic Gravity Wave Drag Parameterization  

Science Conference Proceedings (OSTI)

In model cycle 35r3 (Cy35r3) of the ECMWF Integrated Forecast System (IFS), the momentum deposition from small-scale nonorographic gravity waves is parameterized by the Scinocca scheme, which uses hydrostatic nonrotational wave dynamics to ...

Andrew Orr; Peter Bechtold; John Scinocca; Manfred Ern; Marta Janiskova

2010-11-01T23:59:59.000Z

67

Potential Benefits of Using Probabilistic Forecasts for Waves and Marine Winds Based on the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

The potential benefits of using the ECMWF Ensemble Prediction System (EPS) for waves and marine surface winds are demonstrated using buoy and platform data as well as altimeter data.

Øyvind Saetra; Jean-Raymond Bidlot

2004-08-01T23:59:59.000Z

68

Westerly Wind Events and the 1997/98 El Niño Event in the ECMWF Seasonal Forecasting System: A Case Study  

Science Conference Proceedings (OSTI)

The 1997/98 El Niño was one of the strongest on record. Its onset was predicted by several numerical models, though none fully captured its intensity. This was the case for the ECMWF seasonal forecasting system that underestimated the ...

Frédéric Vitart; Magdalena Alonso Balmaseda; Laura Ferranti; David Anderson

2003-10-01T23:59:59.000Z

69

The Impact of Horizontal Resolution and Ensemble Size on Probabilistic Forecasts of Precipitation by the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

The effect of horizontal resolution and ensemble size on the ECMWF Ensemble Prediction System (EPS) is assessed for probabilistic forecasts of 24-h accumulated precipitation. Two sets of experiments are analyzed. The primary experiment compares ...

Steven L. Mullen; Roberto Buizza

2002-04-01T23:59:59.000Z

70

A Comparison between Raw Ensemble Output, (Modified) Bayesian Model Averaging, and Extended Logistic Regression Using ECMWF Ensemble Precipitation Reforecasts  

Science Conference Proceedings (OSTI)

Using a 20-yr ECMWF ensemble reforecast dataset of total precipitation and a 20-yr dataset of a dense precipitation observation network in the Netherlands, a comparison is made between the raw ensemble output, Bayesian model averaging (BMA), and ...

Maurice J. Schmeits; Kees J. Kok

2010-11-01T23:59:59.000Z

71

Use of a Lidar Forward Model for Global Comparisons of Cloud Fraction between the ICESat Lidar and the ECMWF Model  

Science Conference Proceedings (OSTI)

The performance of the European Centre for Medium-Range Weather Forecasts (ECMWF) model in simulating clouds is evaluated using observations by the Geoscience Laser Altimeter System lidar on the Ice, Cloud, and Land Elevation Satellite (ICESat). ...

Jonathan M. Wilkinson; Robin J. Hogan; Anthony J. Illingworth; Angela Benedetti

2008-10-01T23:59:59.000Z

72

Analysis and Diagnosis of the Composition of Ageostrophic Circulations in Jet-Front Systems  

Science Conference Proceedings (OSTI)

Diagnostic case studies of ageostrophic circulations in upper-tropospheric jet-front systems are presented, using the numerical analyses of the ECMWF model as data sources. The impact of the ECMWF analysis procedure on the retrieved ageostrophic ...

Jean-Pierre Cammas; Daniel Ramond

1989-11-01T23:59:59.000Z

73

Boundary Layer and Cloud Structure Controls on Tropical Low Cloud Cover Using A-Train Satellite Data and ECMWF Analyses  

Science Conference Proceedings (OSTI)

The Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO), CloudSat radar, and the Moderate Resolution Imaging Spectroradiometer (MODIS) cloud data on the A-Train constellation complemented with the European Centre for ...

Terence L. Kubar; Duane E. Waliser; J-L. Li

2011-01-01T23:59:59.000Z

74

Evaluation of the Global Atmospheric Moisture Budget as Seen from Analyses  

Science Conference Proceedings (OSTI)

For the period 1987 to 1993, quantities central to the global moisture budget from the global analyses of the European Centre for Medium-Range Weather Forecasts (ECMWF), the U.S. National Meteorological Center (NMC), and NASA/Goddard have been ...

Kevin E. Trenberth; Christian J. Guillemot

1995-09-01T23:59:59.000Z

75

Prediction of the U.S. Storm of 24–26 January 2000 with the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

Between 24 and 26 January 2000 explosive cyclogenesis along the U.S. east coast caused serious economic disruption and loss of lives. The performance of the European Centre for Medium-Range Weather Forecasts (ECMWF) high-resolution TL319 model ...

Roberto Buizza; Piero Chessa

2002-06-01T23:59:59.000Z

76

Cloudy Sky RRTM Shortwave Radiative Transfer and Comparison to the Revised ECMWF Shortwave Model  

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

Cloudy Sky RRTM Shortwave Radiative Transfer and Cloudy Sky RRTM Shortwave Radiative Transfer and Comparison to the Revised ECMWF Shortwave Model M. J. Iacono, J. S. Delamere, E. J. Mlawer, and S. A. Clough Atmospheric and Environmental Research, Inc. Lexington, Massachusetts J.-J. Morcrette European Centre for Medium-Range Weather Forecasts Reading, United Kingdom Introduction An important step toward improving radiative transfer codes in general circulation models (GCMs) is their thorough evaluation by comparison to measurements directly, or to other data-validated radiation models. This work extends the clear-sky shortwave (SW) GCM evaluation presented by Iacono et al. (2001) to computations including clouds. The rapid radiative transfer model (RRTM) SW radiation model accurately reproduces clear-sky direct beam fluxes from the Line-By-Line Radiative Transfer

77

Comparison of the Structure of the ITCZ in the West Pacific during the Boreal Summers of 1989–93 Using AMIP Simulations and ECMWF Reanalysis  

Science Conference Proceedings (OSTI)

The dynamic structure and interannual variability of the ITCZ in the western North Pacific and east Asia during the boreal summers of 1989–93 are investigated. European Centre for Medium-Range Weather Forecasts (ECMWF) reanalyses are used to ...

S. C. Chan; J. L. Evans

2002-12-01T23:59:59.000Z

78

A Revised Hydrology for the ECMWF Model: Verification from Field Site to Terrestrial Water Storage and Impact in the Integrated Forecast System  

Science Conference Proceedings (OSTI)

The Tiled ECMWF Scheme for Surface Exchanges over Land (TESSEL) is used operationally in the Integrated Forecast System (IFS) for describing the evolution of soil, vegetation, and snow over the continents at diverse spatial resolutions. A revised ...

Gianpaolo Balsamo; Anton Beljaars; Klaus Scipal; Pedro Viterbo; Bart van den Hurk; Martin Hirschi; Alan K. Betts

2009-06-01T23:59:59.000Z

79

An Assessment of ECMWF and NCEP–NCAR Reanalyses in the Southern Hemisphere at the End of the Presatellite Era: Results from the EOLE Experiment (1971–72)  

Science Conference Proceedings (OSTI)

This article estimates the biases and standard deviations of the 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) and the 50-yr National Centers for Environmental Prediction–National Center for Atmospheric ...

Albert Hertzog; Claude Basdevant; François Vial

2006-11-01T23:59:59.000Z

80

A Comparison of ECMWF, NCEP–NCAR, and SOC Surface Heat Fluxes with Moored Buoy Measurements in the Subduction Region of the Northeast Atlantic  

Science Conference Proceedings (OSTI)

The accuracy of surface heat flux estimates from the NCEP–NCAR and ECMWF atmospheric model reanalyses is assessed by comparison with Woods Hole Oceanographic Institute research buoy measurements made during the Subduction Experiment in the ...

S. A. Josey

2001-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

ARM - Measurement - Shortwave broadband total net irradiance  

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

Systems External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model...

82

ARM - Measurement - Liquid water content  

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

Instruments ETA : Eta Model Runs ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model...

83

ARM - Measurement - Longwave broadband net irradiance  

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

purposes. External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model...

84

ARM - Measurement - Cloud fraction  

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

Instruments ETA : Eta Model Runs ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model...

85

Simulation of the northern summer monsoon in the ECMWF model: Sensitivity to horizontal resolution  

SciTech Connect

The ability of the ECMWF model (cycle 33) to simulate the Indian and East Asian summer monsoons is evaluated at four different horizontal resolutions: T21, T42, T63, and T106. Generally, with respect to the large-scale features of the circulation, the largest differences among the simulations occur at T42 relative to T21. However, on regional scales, important differences among the high-frequency temporal variability serve as a further critical test of the model`s ability to simulate the monsoon. T106 best captures both the spatial and temporal characteristics of the Indian and East Asian monsoons, whereas T42 fails to correctly simulate the sequence and development of synoptic-scale milestones that characterize the monsoon flow. In particular, T106 is superior at simulating the development and migration of the monsoon trough over the Bay of Bengal. In the T42 simulation, the development of the monsoon occurs one month earlier than typically observed. At this time the trough is incorrectly located adjacent to the east coast of India, which results in an underestimate of precipitation over the Burma-Thailand region. This early establishment of the monsoon trough affects the evolution of the East Asian monsoon and yields excessive preseason rainfall over the Mei-yu-region. EOF analysis of precipitation over China indicates that T106 best simulates the Mei-yu mode of variability, which is associated with an oscillation of the rainband that gives rise to periods of Mei-yu mode of variability, which is associated with an oscillation of the rainband that gives rise to periods of enhanced rainfall over the Yangtze River valley. The coarse resolution of T21 precludes simulation of the aforementioned regional-scale monsoon flows. 43 refs., 14 figs.

Sperber, K.R.; Potter, G.L.; Boyle, J.S. [Lawrence Livermore National Lab., Livermore, CA (United States); Hameed, S. [State Univ. of New York, Stony Brook, NY (United States)

1994-11-01T23:59:59.000Z

86

The effect of horizontal resolution on cloud radiative forcing in the ECMWF model. PCMDI report No. 22  

SciTech Connect

With expanding computer capability and capacity there has been considerable interest in increasing the resolution in GCMs. The primary driving force behind this are two fold: (1) increased resolution may reduce the systematic errors inherent in parameterization of sub-grid scale processes, and (2) higher resolution may improve confidence in regional scale studies of climatic features that are orographically influenced -- such as the effect of the Tibetan Plateau on the East Asian Monsoon. This study focuses on the effect of horizontal resolution on the spatial and temporal systematic errors of cloud radiative forcing and its components. In this paper, the top-of-the-atmosphere radiation fields are taken from a series of simulations using the European Centre for Medium Range Forecasts (ECMWF) general circulation model (cycle 33), run at four different horizontal resolutions. Section 2 discusses the concept of cloud radiative forcing and describes the simulations from the ECMWF model. The observed global field of cloud forcing from ERBE is presented in section 3 along with the model-produced fields of the net solar and longwave cloud forcing. The seasonal effect of forcing is described in section 4, and the results are summarized in section 5.

Potter, G.L.

1995-05-01T23:59:59.000Z

87

Vorticity Budget for AMEX. Part I: Diagnostics  

Science Conference Proceedings (OSTI)

Six-hourly analyses based on the special observational dataset from the Australian Monsoon Experiment are used to derive vorticity budget diagnostics for a number of tropical weather situations. The quality of the analyses is demonstrated by ...

Noel E. Davidson

1995-06-01T23:59:59.000Z

88

Temperature–Moisture Biases in ECMWF Analyses Based on Clear Sky Longwave Simulations Constrained by SSMI and MSU Measurements and Comparisons to ERBE Estimates  

Science Conference Proceedings (OSTI)

Clear sky longwave radiation fluxes for the summer of 1988 and winter of 1989 have been simulated with a radiative transfer model that includes detailed treatment of atmospheric gas absorption. The input data to the model are humidity and ...

Byung-Ju Sohn

1994-11-01T23:59:59.000Z

89

The Role of Low-Level Moisture Convergence and Ocean Latent Heat Fluxes in the Madden and Julian Oscillation: An Observational Analysis Using ISCCP Data and ECMWF Analyses  

Science Conference Proceedings (OSTI)

This paper examines whether or not low-level moisture convergence and surface latent heat flux act as forcing mechanisms of the Madden and Julian oscillation (MJO), as it is proposed by the theories of wave-CISK (conditional instability of the ...

Charles Jones; Bryan C. Weare

1996-12-01T23:59:59.000Z

90

Simulation of the Indian and East-Asian summer monsoon in the ECMWF model: Sensitivity to horizontal resolution  

SciTech Connect

The ability of the ECMWF model (Cycle 33) to simulate the Indian and East Asian summer monsoon is evaluated at four different horizontal resolutions: T21, T42, T63, and T106. Generally, with respect to the large scale features of the circulation, the largest differences among the simulations occur at T42 relative to T21. However, on regional scales, important differences among the high frequency temporal variabilitY serve as a further critical test of the model`s ability to simulate the monsoon. More generally, the results indicate the importance of evaluating high frequency time scales as a component of the climate system. T106 best captures both the spatial and temporal characteristics of the Indian and East Asian Monsoon, while T42 fails to correctly simulate the sequence and development of synoptic scale milestones that characterize the monsoon flow. In particular, T106 is superior at simulating the development and migration of the monsoon trough over the Bay of Bengal. In the T42 simulation, the development of the monsoon occurs one month earlier than typically observed. At this time the trough is incorrectly located adjacent to the east coast of India which results in an underestimate of precipitation over the Burma/Thailand region. This early establishment of the monsoon trough affects the evolution of the East-Asian monsoon and yields excessive preseason rainfall over the Mei-yu region. EOF analysis of precipitation over China indicates that T106 best simulates the Mei-yu mode of variability associated with an oscillation of the rainband that gives rise to periods of enhanced rainfall over the Yangize River Valley. The coarse resolution of T21 precludes simulation of the aforementioned regional scale monsoon flows.

Sperber, K.R.; Potter, G.L.; Boyle, J.S. [Lawrence Livermore National Lab., CA (United States); Hameed, S. [State Univ. of New York, Stony Brook, NY (United States). Inst. for Terrestrial and Planetary Atmospheres

1993-11-01T23:59:59.000Z

91

NETL: Gasification - Systems Analyses  

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

System Analyses Gasification Systems Systems Analyses Go to the NETL Gasification Systems Program's Systems and Industry Analyses Studies Technology & CostPerformance Studies NETL...

92

NSLS Controls & Diagnostics  

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

Controls & Diagnostics Systems Other Projects and Responsibilities WebDAQs Presentations Papers Tech Notes...

93

Comparison of Cloud Fraction and Liquid Water Path between ECMWF simulations and ARM long-term Observations at the NSA Site  

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

this poster, seasonal and annual variations of this poster, seasonal and annual variations of cloudiness and liquid water path (LWP) from European Center for Medium-Range Weather Forecasts (ECMWF) model were compared with surface measurement from the ARM Climate Research Facility (ARCF) North Slope of Alaska ( N S A ) s i t e b e t we e n J a n u a r y 1 9 9 9 and December 2004. ● Model simulated large scale features match well with observations. ● There are significant differences in cloud vertical and temporal distributions and in the magnitude. FIG. 1: Time-height display of cloud fraction from model simulations and observations in September 1999. ● Model overestimates high clouds, especially in warm seasons. ● Model makes close estimation for middle clouds. ● Model underestimates low clouds in warm seasons, especially in

94

Lifecycle Analyses of Biofuels  

E-Print Network (OSTI)

08 Lifecycle Analyses of Biofuels Draft Report (May be citedLIFECYCLE ANALYSES OF BIOFUELS Draft manuscript (may belifecycle analysis (LCA) of biofuels for transportation has

Delucchi, Mark

2006-01-01T23:59:59.000Z

95

Diagnostic Imaging Emergency Medicine  

E-Print Network (OSTI)

UC Davis Veterinary Diagnostic Imaging Symposium Emergency Medicine May 15, 2011 Gladys Valley Hall devoted to triage, assessment, and imaging diagnostics in emergency medicine. Speakers in this year's symposium include specialists in diagnostic imaging, and emergency and critical care. Sunday May 15, 2011 8

Hammock, Bruce D.

96

Gas turbine diagnostic system  

E-Print Network (OSTI)

In the given article the methods of parametric diagnostics of gas turbine based on fuzzy logic is proposed. The diagnostic map of interconnection between some parts of turbine and changes of corresponding parameters has been developed. Also we have created model to define the efficiency of the compressor using fuzzy logic algorithms.

Talgat, Shuvatov

2011-01-01T23:59:59.000Z

97

ORISE: Radiochemical analyses  

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

Radiochemical analyses Radiochemical analyses ORISE techinican performs a radiochemical analysis To complement our environmental assessment and health physics capabilities, the Oak Ridge Institute for Science and Education (ORISE) maintains a radiochemistry laboratory that facilitates the analysis of environmental samples and unique matrices. ORISE performs radiochemical analyses exclusively for the U.S. Nuclear Regulatory Commission (NRC), as well as provides support to the U.S. Department of Energy, the U.S. Department of Homeland Security, and other federal agencies and state governments. Key laboratory capabilities include: Alpha spectroscopy Gamma spectroscopy Liquid scintillation spectroscopy Low-background gross alpha and beta assays Radiochemical analyses for alpha and beta emitters

98

Cable Diagnostic Focused Initiative  

SciTech Connect

This report summarizes an extensive effort made to understand how to effectively use the various diagnostic technologies to establish the condition of medium voltage underground cable circuits. These circuits make up an extensive portion of the electric delivery infrastructure in the United States. Much of this infrastructure is old and experiencing unacceptable failure rates. By deploying efficient diagnostic testing programs, electric utilities can replace or repair circuits that are about to fail, providing an optimal approach to improving electric system reliability. This is an intrinsically complex topic. Underground cable systems are not homogeneous. Cable circuits often contain multiple branches with different cable designs and a range of insulation materials. In addition, each insulation material ages differently as a function of time, temperature and operating environment. To complicate matters further, there are a wide variety of diagnostic technologies available for assessing the condition of cable circuits with a diversity of claims about the effectiveness of each approach. As a result, the benefits of deploying cable diagnostic testing programs have been difficult to establish, leading many utilities to avoid the their use altogether. This project was designed to help address these issues. The information provided is the result of a collaborative effort between Georgia Tech NEETRAC staff, Georgia Tech academic faculty, electric utility industry participants, as well as cable system diagnostic testing service providers and test equipment providers. Report topics include: •How cable systems age and fail, •The various technologies available for detecting potential failure sites, •The advantages and disadvantages of different diagnostic technologies, •Different approaches for utilities to employ cable system diagnostics. The primary deliverables of this project are this report, a Cable Diagnostic Handbook (a subset of this report) and an online knowledge based system (KBS) that helps utilities select the most effective diagnostic technologies for a given cable circuit and circuit conditions.

Hartlein, R.A.; Hampton, R.N.

2010-12-30T23:59:59.000Z

99

1  

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

3). Observations and ECMWF Model Comparison The ECMWF model output diagnostic data files are used to provide a comparison between model output and observations. The model...

100

Diagnostics for the Combustion Science Workbench  

SciTech Connect

As the cost of computers declines relative to outfitting andmaintaining laser spectroscopy laboratories, computers will account foran increasing proportion of the research conducted in fundamentalcombustion science. W.C. Gardiner foresaw that progress will be limitedby the ability to understand the implications of what has been computedand to draw inferences about the elementary components of the combustionmodels. Yet the diagnostics that are routinely applied to computerexperiments have changed little from the sensitivity analyses includedwith the original chemkin software distribution. This paper describessome diagnostics capabilities that may be found on the virtual combustionscience workbench of the future. These diagnostics are illustrated bysome new results concerning which of the hydrogen/oxygen chain branchingreactions actually occur in flames, the increased formation of NOx inwrinkled flames versus flat flames, and the adequacy oftheoreticalpredictions of the effects of stretch. Several areas are identified wherework is needed, including the areas of combustion chemistry and laserdiagnostics, to make the virtual laboratory a reality.

Grcar, J.F.; Day, M.S.; Bell, J.B.

2007-02-21T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Substation equipment diagnostics  

SciTech Connect

Recent advances in signal processing techniques have paved the way for utilities to effectively meet the challenge of using existing assets more fully while maintaining traditional service reliability. Over the last 10 years, the author's institute has been applying these technological advances in the area of transmission substations to develop substation diagnostic devices and systems. Their involvement with transformer diagnostic is discussed in this paper.

Nilsson, S. (Electrical Equipment Div., Electric Power Research Inst. (US))

1990-09-01T23:59:59.000Z

102

ORION laser target diagnostics  

SciTech Connect

The ORION laser facility is one of the UK's premier laser facilities which became operational at AWE in 2010. Its primary mission is one of stockpile stewardship, ORION will extend the UK's experimental plasma physics capability to the high temperature, high density regime relevant to Atomic Weapons Establishment's (AWE) program. The ORION laser combines ten laser beams operating in the ns regime with two sub ps short pulse chirped pulse amplification beams. This gives the UK a unique combined long pulse/short pulse laser capability which is not only available to AWE personnel but also gives access to our international partners and visiting UK academia. The ORION laser facility is equipped with a comprehensive suite of some 45 diagnostics covering optical, particle, and x-ray diagnostics all able to image the laser target interaction point. This paper focuses on a small selection of these diagnostics.

Bentley, C. D.; Edwards, R. D.; Andrew, J. E.; James, S. F.; Gardner, M. D.; Comley, A. J.; Vaughan, K.; Horsfield, C. J.; Rubery, M. S.; Rothman, S. D.; Daykin, S.; Masoero, S. J.; Palmer, J. B.; Meadowcroft, A. L.; Williams, B. M.; Gumbrell, E. T.; Fyrth, J. D.; Brown, C. R. D.; Hill, M. P.; Oades, K. [Plasma Physics Department, Atomic Weapons Establishment, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom); and others

2012-10-15T23:59:59.000Z

103

BEAM SIMULATIONS USING VIRTUAL DIAGNOSTICS FOR THE DRIVER LINAC  

Science Conference Proceedings (OSTI)

End-to-end beam simulations for the driver linac have shown that the design meets the necessary performance requirements including having adequate transverse and longitudinal acceptances. However, to achieve reliable operational performance, the development of appropriate beam diagnostic systems and control room procedures are crucial. With limited R&D funding, beam simulations provide a cost effective tool to evaluate candidate beam diagnostic systems and to provide a critical basis for developing early commissioning and later operational activities. We propose to perform beam dynamic studies and engineering analyses to define the requisite diagnostic systems of the driver linac and through simulation to develop and test commissioning and operational procedures.

R. C. York; X. Wu; Q. Zhao

2011-12-21T23:59:59.000Z

104

Beam Diagnostics for FACET  

SciTech Connect

FACET, the Facility for Advanced Accelerator and Experimental Tests, is a new facility being constructed in sector 20 of the SLAC linac primarily to study beam driven plasma wakefield acceleration beginning in summer 2011. The nominal FACET parameters are 23GeV, 3nC electron bunches compressed to about 20 {micro}m long and focussed to about 10 {micro}m wide. Characterization of the beam-plasma interaction requires complete knowledge of the incoming beam parameters on a pulse-to-pulse basis. FACET diagnostics include Beam Position Monitors, Toroidal current monitors, X-ray and Cerenkov based energy spectrometers, optical transition radiation (OTR) profile monitors and coherent transition radiation (CTR) bunch length measurement systems. The compliment of beam diagnostics and their expected performance are reviewed. Beam diagnostic measurements not only provide valuable insights to the running and tuning of the accelerator but also are crucial for the PWFA experiments in particular. Beam diagnostic devices are being set up at FACET and will be ready for beam commissioning in summer 2011.

Li, S.Z.; Hogan, M.J.; /SLAC

2011-08-19T23:59:59.000Z

105

Heterodyne laser diagnostic system  

DOE Patents (OSTI)

The heterodyne laser diagnostic system includes, in one embodiment, an average power pulsed laser optical spectrum analyzer for determining the average power of the pulsed laser. In another embodiment, the system includes a pulsed laser instantaneous optical frequency measurement for determining the instantaneous optical frequency of the pulsed laser.

Globig, Michael A. (Antioch, CA); Johnson, Michael A. (Pleasanton, CA); Wyeth, Richard W. (Livermore, CA)

1990-01-01T23:59:59.000Z

106

DIAGNOSTICS OF BNL ERL  

SciTech Connect

The ERL Prototype project is currently under development at the Brookhaven National Laboratory. The ERL is expected to demonstrate energy recovery of high-intensity beams with a current of up to a few hundred milliamps, while preserving the emittance of bunches with a charge of a few nanocoulombs produced by a high-current SRF gun. To successfully accomplish this task the machine will include beam diagnostics that will be used for accurate characterization of the three dimensional beam phase space at the injection and recirculation energies, transverse and longitudinal beam matching, orbit alignment, beam current measurement, and machine protection. This paper outlines requirements on the ERL diagnostics and describes its setup and modes of operation.

POZDEYEV,E.; BEN-ZVI, I.; CAMERON, P.; GASSNER, D.; KAYRAN, D.; ET AL.

2007-06-25T23:59:59.000Z

107

Diagnostics Techniques of Power Transformer  

Science Conference Proceedings (OSTI)

This paper provides the information on the diagnostics techniques for condition monitoring of power transformer (PT). This paper deals with the practical importance of the transformer diagnostic in the Electrical Engineering field. A review has been ... Keywords: temperature, condition monitoring, diagnostics methods, paper analysis techniques, oil analysis techniques

Piush Verma; Y. R. Sood; Jashandeep Singh

2009-12-01T23:59:59.000Z

108

ITER Diagnostic First Wal  

Science Conference Proceedings (OSTI)

The ITER Diagnostic Division is responsible for designing and procuring the First Wall Blankets that are mounted on the vacuum vessel port plugs at both the upper and equatorial levels This paper will discuss the effects of the diagnostic aperture shape and configuration on the coolant circuit design. The DFW design is driven in large part by the need to conform the coolant arrangement to a wide variety of diagnostic apertures combined with the more severe heating conditions at the surface facing the plasma, the first wall. At the first wall, a radiant heat flux of 35W/cm2 combines with approximate peak volumetric heating rates of 8W/cm3 (equatorial ports) and 5W/cm3 (upper ports). Here at the FW, a fast thermal response is desirable and leads to a thin element between the heat flux and coolant. This requirement is opposed by the wish for a thicker FW element to accommodate surface erosion and other off-normal plasma events.

G. Douglas Loesser, et. al.

2012-09-21T23:59:59.000Z

109

EEG analyses with SOBI.  

SciTech Connect

The motivating vision behind Sandia's MENTOR/PAL LDRD project has been that of systems which use real-time psychophysiological data to support and enhance human performance, both individually and of groups. Relevant and significant psychophysiological data being a necessary prerequisite to such systems, this LDRD has focused on identifying and refining such signals. The project has focused in particular on EEG (electroencephalogram) data as a promising candidate signal because it (potentially) provides a broad window on brain activity with relatively low cost and logistical constraints. We report here on two analyses performed on EEG data collected in this project using the SOBI (Second Order Blind Identification) algorithm to identify two independent sources of brain activity: one in the frontal lobe and one in the occipital. The first study looks at directional influences between the two components, while the second study looks at inferring gender based upon the frontal component.

Glickman, Matthew R.; Tang, Akaysha (University of New Mexico, Albuquerque, NM)

2009-02-01T23:59:59.000Z

110

Building Technologies Office: Diagnostic Measurement and Performance...  

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

Diagnostic Measurement and Performance Feedback for Residential Space Conditioning Equipment Expert Meeting Building America hosted the "Diagnostic Measurement and Performance...

111

Diagnostics for hybrid reactors  

SciTech Connect

The Hybrid Reactor(HR) can be considered an attractive actinide-burner or a fusion assisted transmutation for destruction of transuranic(TRU) nuclear waste. The hybrid reactor has two important subsystems: the tokamak neutron source and the blanket which includes a fuel zone where the TRU are placed and a tritium breeding zone. The diagnostic system for a HR must be as simple and robust as possible to monitor and control the plasma scenario, guarantee the protection of the machine and monitor the transmutation.

Orsitto, Francesco Paolo [ENEA Unita' Tecnica Fusione , Associazione ENEA-EURATOM sulla Fusione C R Frascati v E Fermi 45 00044 Frascati (Italy)

2012-06-19T23:59:59.000Z

112

Instrumentation and diagnostics  

SciTech Connect

This Technology Status Report describes research and accomplishments for the Instrumentation and Diagnostics (I D) Projects within the Advanced Research and Technology Development (AR TD) Program of the United States Department of Energy (DOE) Office of Fossil Energy (FE). Process understanding and control can be improved through the development of advanced instrumentation and diagnostics. The thrust of the I D Projects is to further develop existing measurement and control techniques for application to advanced coal-based technologies. Project highlights are: an inductively coupled plasma (ICP) instrument has been developed to analyze trace elements in gasification and combustion process streams. An in situ two-color Mie scattering technique with LSS can simultaneously measure the size, velocity, and elemental composition of coal particles during combustion. A high-temperature, fluorescence thermometry technique has accurately measured gas temperatures during field testing in combustion and gasification environments. Expert systems have been developed to improve the control of advanced coal-based processes. Capacitance flowmeters were developed to determine the mass flowrate, solid volume fraction, and particle velocities of coal slurries. 32 refs., 9 figs.

Nakaishi, C.V.; Bedick, R.C.

1990-12-01T23:59:59.000Z

113

Laser fusion diagnostics  

SciTech Connect

The current status of the capability of laser fusion diagnostics is reviewed. Optical and infrared streak cameras provide one time resolution measurement capability of less than 10 ps, while x-ray streak cameras provide 15 ps time resolution in the range of about 1--30 keV presently. Time integrated spatial resolutions of 1 ..mu..m are provided with a variety of optical techniques. Ultraviolet holographic interferometry has measured electron densities above 10/sup 21/ cm/sup -3/ with 1 ..mu..m spatial resolution and 15 ps temporal resolution. X-ray microscopes provide 3 ..mu..m time integrated resolution and the x-ray streak pinhole camera has 6 ..mu..m spatial resolution. Development of the framing camera has thus far provided 50 ..mu..m spatial resolution with 125 ps frame duration and the third order reconstruction of zone plate images has provided 3 ..mu..m resolutions for alpha particles. Time integrated measurements of x-rays span the range shown. Finally, the new Shiva neutron spectrometer increases the energy resolution capability of that technique to 25 keV for 14-MeV neutrons. These combined capabilities provide a unique set of diagnostics for the detailed measurement of the interaction of laser light with targets and a subsequent performance of those targets.

Coleman, L.W.

1978-05-09T23:59:59.000Z

114

The influence of frequency shifts in microwave sounder channels on NWP analyses and forecasts  

Science Conference Proceedings (OSTI)

The sensitivity of Numerical Weather Prediction (NWP) analysis and forecast accuracies with respect to frequency shift in microwave passbands is quantified through a series of observing system experiments using the ECMWF integrated assimilation ...

Carole Peubey; William Bell

115

ARM XDC Datastreams  

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

Diagnostic Analyses Diagnostic Analyses Documentation ECMWFDIAG Instrument External Datastream Descriptions 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 European Centre for Medium Range Weather Forecasts Diagnostic Analyses (ECMWFDIAG) Information updated on July 3, 2013, 6:19 pm GMT General Data Description Diagnostic Analyses data are derived from ECMWF model runs in simulated vertical profiles of diagnostic variables at specific locations or for area averages. The Physical Parametrization Group at ECMWF generates these data as a courtesy to ARM for all the ACRF sites including the changing location of the mobile facility. These data can only be distributed to ARM scientists. ARM scientists who obtain these data must agree to acknowledge use of the data in their

116

On-board Diagnostics  

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

On-board On-board Diagnostics for Big Data J. Zurawski ⇤ , S. Balasubramanian ⇤ , A. Brown ‡ , E. Kissel † , A. Lake ⇤ , M. Swany † , B. Tierney ⇤ and M. Zekauskas ‡ ⇤ Energy Sciences Network (ESnet) Lawrence Berkeley National Laboratory, Berkeley, CA, USA Email: {zurawski, sowmya, andy, bltierney}@es.net † Indiana University School of Informatics and Computing, Bloomington, IN, USA Email: {ezkissel, swany}@indiana.edu ‡ Internet2 Ann Arbor, MI, USA Email: {aaron, matt}@internet2.edu Abstract-Big science data necessitates the requirement to incorporate state-of-the-art technologies and processes into science workflows. When transferring "big data", the network infrastructure connects sites for storage, analysis and data transfer. A component that is often overlooked within the network is a robust measurement and testing infrastructure that

117

Energy Analyses | Department of Energy  

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

Science & Innovation » Clean Coal » Crosscutting Research » Science & Innovation » Clean Coal » Crosscutting Research » Energy Analyses Energy Analyses The Office of Fossil Energy conducts energy analyses to assess the economics of advanced process concepts in support of near-zero emissions power plants. Environmental Activities. These analyses include the potential impact on health and climate change of particulates and linkages to fossil fuel use, barriers to and environmental impacts of large-scale deployment of carbon capture, utilization and storage (CCUS) technologies, and life cycle environmental emissions analysis for existing and advanced fossil fuel technologies. Technical and Economic Analyses. Analyses in this area crosscuts all Fossil Energy programs and supports multi-year program and strategic planning

118

Building Technologies Office: Diagnostic Measurement and Performance...  

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

Diagnostic Measurement and Performance Feedback for Residential Space Conditioning Equipment Expert Meeting to someone by E-mail Share Building Technologies Office: Diagnostic...

119

FEL-accelerator related diagnostics  

SciTech Connect

Free Electron Lasers (FEL) present a unique set of beam parameters to the diagnostics suite. The FEL requires characterization of the full six dimensional phase space of the electron beam at the wiggler and accurate alignment of the electron beam to the optical mode of the laser. In addition to the FEL requirements on the diagnostics suite, the Jefferson Lab FEL is operated as an Energy Recovered Linac (ERL) which imposes additional requirements on the diagnostics. The ERL aspect of the Jefferson Lab FEL requires that diagnostics operate over a unique dynamic range and operate with simultaneous transport of the accelerated and energy recovered beams. This talk will present how these challenges are addressed at the Jefferson Lab FEL.

Kevin Jordan; David Douglas; Stephen V. Benson; Pavel Evtuschenko

2007-08-02T23:59:59.000Z

120

Market Analyses | Department of Energy  

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

Market Analyses Market Analyses Market Analyses November 1, 2013 - 11:40am Addthis Need information on the market potential for combined heat and power (CHP) in the U.S.? These assessments and analyses cover a wide range of markets including commercial and institutional buildings and facilities, district energy, and industrial sites. The market potential for CHP at federal sites and in selected states/regions is also examined. Commercial CHP and Bioenergy Systems for Landfills and Wastewater Treatment Plants Part I, 17 pp and Part II, 28 pp, Nov. 2007 Cooling, Heating, and Power for Commercial Buildings: Benefits Analysis, 310 pp, April 2002 Engine Driven Combined Heat and Power: Arrow Linen Supply, 21 pp, Dec. 2008 Integrated Energy Systems for Buildings: A Market Assessment, 77 pp,

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Diagnostics for neutral-beam-heated tokamaks  

SciTech Connect

Diagnostic techniques for neutral-beam-heated tokamak plasmas fall into three categories: (1) magnetic diagnostics for measurements of gross stored energy, (2) profile diagnostics for measurements of stored thermal and beam energy, impurity content and plasma rotation, and (3) fast time resolution diagnostics to study MHD fluctuations and micro-turbulence.

Goldston, R.J.

1982-12-01T23:59:59.000Z

122

Forecast Advisory for the Late Fall Heavy Rainfall/Flood Event in Central Vietnam Developed from Diagnostic Analysis  

Science Conference Proceedings (OSTI)

The formations of heavy rainfall/flood (HRF) events in Vietnam are studied from diagnostic analyses of 31 events during the period 1979–2009. HRF events develop from the cold surge vortices formed around the Philippines. These vortices’ speed, ...

Tsing-Chang Chen; Ming-Cheng Yen; Jenq-Dar Tsay; Jordan Alpert; Nguyen Thi Tan Thanh

2012-10-01T23:59:59.000Z

123

Comparison of emerging diagnostic tools for large commercial HVAC systems  

E-Print Network (OSTI)

Manual Diagnostic Tools • ENFORMA ® Portable Diagnostic Solutions (ENFORMA software), Architectural Energy Corporation (AEC) (

Friedman, Hannah; Piette, Mary Ann

2001-01-01T23:59:59.000Z

124

Verification of NWP Model Analyses and Radiosonde Humidity Data with GPS Precipitable Water Vapor Estimates during AMMA  

Science Conference Proceedings (OSTI)

This paper assesses the performance of the European Centre for Medium-Range Weather Forecasts-Integrated Forecast System (ECMWF-IFS) operational analysis and NCEP–NCAR reanalyses I and II over West Africa, using precipitable water vapor (PWV) ...

O. Bock; M. Nuret

2009-08-01T23:59:59.000Z

125

DICE Diagnostic Service Joe Metzger  

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

DICE Diagnostic Service DICE Diagnostic Service Joe Metzger metzger@es.net Joint Techs Measurement Working Group January 27 2011 Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science Background Each of the DICE collaborators are defining and delivering services to their users. A subset of these services will be a lot more useful for everyone if all of the DICE participants deploy them in an interoperable fashion. A decision was made last winter to add more rigor or structure to our collaborative efforts and focus on a small set of services. * Network Diagnostic Service * Dynamic Circuit Provisioning Service * End user performance portal service Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science

126

First Wall and Operational Diagnostics  

SciTech Connect

In this chapter we review numerous diagnostics capable of measurements at or near the first wall, many of which contribute information useful for safe operation of a tokamak. There are sections discussing infrared cameras, visible and VUV cameras, pressure gauges and RGAs, Langmuir probes, thermocouples, and erosion and deposition measurements by insertable probes and quartz microbalance. Also discussed are dust measurements by electrostatic detectors, laser scattering, visible and IR cameras, and manual collection of samples after machine opening. In each case the diagnostic is discussed with a view toward application to a burning plasma machine such as ITER.

Lasnier, C; Allen, S; Boedo, J; Groth, M; Brooks, N; McLean, A; LaBombard, B; Sharpe, J; Skinner, C; Whyte, D; Rudakov, D; West, W; Wong, C

2006-06-19T23:59:59.000Z

127

Cathodic protection diagnostic expert system  

Science Conference Proceedings (OSTI)

A knowledge-based diagnostic system has been developed for troubleshooting cathodic protection systems. The expert system is designed to work in conjunction with a database that stores inventory and field measurement information and flags problem areas. The system is described, and examples of troubleshooting using the system are presented.

Van Blaricum, V.L.; Kumar, A. (Army Construction Engineering Research Labs., Champaign, IL (United States)); Park, Y.T. (Soong Sil Univ., Seoul (Korea, Republic of). Dept. of Computer Science)

1994-12-01T23:59:59.000Z

128

Detection & Diagnostic Systems Multimedia - Argonne National...  

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

Multimedia Multimedia Nuclear Systems Analysis Engineering Analysis Nonproliferation and National Security Detection & Diagnostic Systems Engineering Development & Applications...

129

Diagnostic and Advisory Systems - Nuclear Engineering Division...  

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

Diagnostic and Advisory Systems Capabilities Nuclear Systems Technologies Nuclear Criticality Safety Research Reactor Analysis Decontamination and Decommissioning SystemsProcess...

130

Companion Diagnostics for Personalized Medicine A Critical ...  

Science Conference Proceedings (OSTI)

... in diagnostics began to increase slightly in 2007 6 Bloomberg News, Nov. 14, 2008 7 Kurtzman, “A Business Model for ...

2011-08-02T23:59:59.000Z

131

Proceedings: Tenth EPRI Substation Equipment Diagnostics Conference  

SciTech Connect

Advanced monitoring and diagnostic sensors and systems are needed to provide reliable and accurate information for determining the condition of major transmission substation equipment. The tenth EPRI Substation Equipment Diagnostics Conference highlighted the work of researchers, universities, manufacturers, and utilities in producing advanced monitoring and diagnostic equipment for substations.

None

2002-06-01T23:59:59.000Z

132

Proceedings: Substation Equipment Diagnostics Conference IX  

SciTech Connect

Advanced monitoring and diagnostic sensors and systems are needed to provide reliable and accurate information for determining the condition of major transmission substation equipment. The ninth EPRI Substation Equipment Diagnostics Conference highlighted the work of researchers, universities, manufacturers, and utilities in producing advanced monitoring and diagnostic equipment for substations.

None

2001-09-01T23:59:59.000Z

133

Proceedings: Substation Equipment Diagnostics Conference VIII  

SciTech Connect

Advanced monitoring and diagnostic sensors and systems are needed to provide reliable and accurate information for determining the condition of major transmission substation equipment. The eighth EPRI Substation Equipment Diagnostics Conference highlighted the work of researchers, universities, manufacturers, and utilities in producing advanced monitoring and diagnostic equipment for substations.

None

2000-06-01T23:59:59.000Z

134

Proceedings: Tenth EPRI Substation Equipment Diagnostics Conference  

Science Conference Proceedings (OSTI)

Advanced monitoring and diagnostic sensors and systems are needed to provide reliable and accurate information for determining the condition of major transmission substation equipment. The tenth EPRI Substation Equipment Diagnostics Conference highlighted the work of researchers, universities, manufacturers, and utilities in producing advanced monitoring and diagnostic equipment for substations.

2002-06-27T23:59:59.000Z

135

High Energy Laser Diagnostic Sensors  

Science Conference Proceedings (OSTI)

Recent advancements in high energy laser (HEL) sources have outpaced diagnostic tools capable of accurately quantifying system performance. Diagnostic tools are needed that allow system developers to measure the parameters that define HEL effectiveness. The two critical parameters for quantifying HEL effectiveness are the irradiance on target and resultant rise in target temperature. Off-board sensing has its limitations, including unpredictable changes in the reflectivity of the target, smoke and outgassing, and atmospheric distortion. On-board sensors overcome the limitations of off-board techniques but must survive high irradiance levels and extreme temperatures.We have developed sensors for on-target diagnostics of high energy laser beams and for the measurement of the thermal response of the target. The conformal sensors consist of an array of quantum dot photodetectors and resistive temperature detectors. The sensor arrays are lithographically fabricated on flexible substrates and can be attached to a variety of laser targets. We have developed a nanoparticle adhesive process that provides good thermal contact with the target and that ensures the sensor remains attached to the target for as long as the target survives. We have calibrated the temperature and irradiance sensors and demonstrated them in a HEL environment.

Luke, James R.; Goddard, Douglas N.; Thomas, David [AEgis Technologies Group, 10501 Research Rd SE, Suite D, Albuquerque, NM 87123, 505-938-9221 (United States); Lewis, Jay [RTI International, Research Triangle Park, NC (United States)

2010-10-08T23:59:59.000Z

136

Examples of Analyses [Engineering and Structural Mechanics] ...  

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

Analyses Capabilities Engineering Computation and Design Engineering and Structural Mechanics Overview Areas of Application Examples of Analyses SystemsComponent Design,...

137

Atomic Models for Motional Stark Effects Diagnostics  

DOE Green Energy (OSTI)

We present detailed atomic physics models for motional Stark effects (MSE) diagnostic on magnetic fusion devices. Excitation and ionization cross sections of the hydrogen or deuterium beam traveling in a magnetic field in collisions with electrons, ions, and neutral gas are calculated in the first Born approximation. The density matrices and polarization states of individual Stark-Zeeman components of the Balmer {alpha} line are obtained for both beam into plasma and beam into gas models. A detailed comparison of the model calculations and the MSE polarimetry and spectral intensity measurements obtained at the DIII-D tokamak is carried out. Although our beam into gas models provide a qualitative explanation for the larger {pi}/{sigma} intensity ratios and represent significant improvements over the statistical population models, empirical adjustment factors ranging from 1.0-2.0 must still be applied to individual line intensities to bring the calculations into full agreement with the observations. Nevertheless, we demonstrate that beam into gas measurements can be used successfully as calibration procedures for measuring the magnetic pitch angle through {pi}/{sigma} intensity ratios. The analyses of the filter-scan polarization spectra from the DIII-D MSE polarimetry system indicate unknown channel and time dependent light contaminations in the beam into gas measurements. Such contaminations may be the main reason for the failure of beam into gas calibration on MSE polarimetry systems.

Gu, M F; Holcomb, C; Jayakuma, J; Allen, S; Pablant, N A; Burrell, K

2007-07-26T23:59:59.000Z

138

Support for Cost Analyses on  

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

5 Hartwell Ave 5 Hartwell Ave Lexington, MA 02421 Support for Cost Analyses on Solar-Driven High Temperature Thermochemical Water-Splitting Cycles Final Report to: Department of Energy Order DE-DT0000951 Report prepared by TIAX LLC Reference D0535 February 22, 2011 Matt Kromer (Principal Investigator) Kurt Roth Rosalind Takata Paul Chin Copyright 2011, TIAX LLC Notice: This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents

139

Tropical Cyclone Environments over the Northeastern and Northwestern Pacific Based on ERA-15 Analyses  

Science Conference Proceedings (OSTI)

This study uses a 1° × 1° lat–long dataset, extracted from ECMWF reanalyses for the 15-yr period 1979–93 (ERA-15), to composite environmental characteristics and flow features in the vicinity of named tropical cyclones (TCs) in the eastern and ...

Dayton G. Vincent; Andreas H. Fink

2001-08-01T23:59:59.000Z

140

Emergency Tests Focus on Lab Radioactivity Analyses  

Science Conference Proceedings (OSTI)

Emergency Tests Focus on Lab Radioactivity Analyses. For Immediate ... Berne. Radioanalytical emergency response exercise. Journal ...

2013-09-05T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Tokamak x ray diagnostic instrumentation  

SciTech Connect

Three classes of x-ray diagnostic instruments enable measurement of a variety of tokamak physics parameters from different features of the x-ray emission spectrum. (1) The soft x-ray (1 to 50 keV) pulse-height-analysis (PHA) diagnostic measures impurity concentrations from characteristic line intensities and the continuum enhancement, and measures the electron temperature from the continuum slope. (2) The Bragg x-ray crystal spectrometer (XCS) measures the ion temperature and neutral-beam-induced toroidal rotation velocity from the Doppler broadening and wavelength shift, respectively, of spectral lines of medium-Z impurity ions. Impurity charge state distributions, precise wavelengths, and inner-shell excitation and recombination rates can also be studied. X rays are diffracted and focused by a bent crystal onto a position-sensitive detector. The spectral resolving power E/..delta..E is greater than 10/sup 4/ and time resolution is 10 ms. (3) The x-ray imaging system (XIS) measures the spatial structure of rapid fluctuations (0.1 to 100 kHZ) providing information on MHD phenomena, impurity transport rates, toroidal rotation velocity, plasma position, and the electron temperature profile. It uses an array of silicon surface-barrier diodes which view different chords of the plasma through a common slot aperture and operate in current (as opposed to counting) mode. The effectiveness of shields to protect detectors from fusion-neutron radiation effects has been studied both theoretically and experimentally.

Hill, K.W.; Beiersdorfer, P.; Bitter, M.; Fredrickson, E.; Von Goeler, S.; Hsuan, H.; Johnson, L.C.; Liew, S.L.; McGuire, K.; Pare, V.

1987-01-01T23:59:59.000Z

142

Neutron diagnostics for mirror hybrids  

SciTech Connect

Fusion-fission (FuFi) hybrids will need instrumentation to diagnose the deuteriumtritium plasma, whose 14-MeV neutron emission is the driver of the sub-critical fission core. While the fission neutron yield rate (Y{sub fi} and hence power P{sub fi}) can be monitored with standard instrumentation, fusion plasmas in hybrids require special diagnostics where the determination of Y{sub th} ({proportional_to}P{sub fu}) is a challenge. Information on Y{sub fu} is essential for assessing the fusion plasma performance which together with Y{sub fi} allows for the validation of the neutron multiplication factor (k) of the subcritical fission core. Diagnostics for hybrid plasmas are heuristically discussed with special reference to straight field line mirror (SFLM). Relevant DT plasma experience from JET and plans for ITER in the main line of fusion research were used as input. It is shown that essential SFLM plasma information can potentially be obtained with proposed instrumentation, but the state of the hybrid plasma must be predictably robust as derived from fully diagnosed dedicated experiments without interface restrictions of the hybrid application.

Kaellne, Jan; Noack, Klaus; Agren, Olov; Gorini, Giuseppe; Tardocchi, Marco; Grosso, Giovanni [Department of Engineering Sciences, Uppsala University, Box 256, SE-751 21 Uppsala (Sweden); Universita degli Studi di Milano - Bicocca, Dip. di Fisica 'G. Occhialini', Piazza della Scienza 3, 20126, Milan (Italy)

2012-06-19T23:59:59.000Z

143

Photovoltaics: Life-cycle Analyses  

DOE Green Energy (OSTI)

Life-cycle analysis is an invaluable tool for investigating the environmental profile of a product or technology from cradle to grave. Such life-cycle analyses of energy technologies are essential, especially as material and energy flows are often interwoven, and divergent emissions into the environment may occur at different life-cycle-stages. This approach is well exemplified by our description of material and energy flows in four commercial PV technologies, i.e., mono-crystalline silicon, multi-crystalline silicon, ribbon-silicon, and cadmium telluride. The same life-cycle approach is applied to the balance of system that supports flat, fixed PV modules during operation. We also discuss the life-cycle environmental metrics for a concentration PV system with a tracker and lenses to capture more sunlight per cell area than the flat, fixed system but requires large auxiliary components. Select life-cycle risk indicators for PV, i.e., fatalities, injures, and maximum consequences are evaluated in a comparative context with other electricity-generation pathways.

Fthenakis V. M.; Kim, H.C.

2009-10-02T23:59:59.000Z

144

NSTX Diagnostics and Operation: Status and Plans  

SciTech Connect

The low aspect ratio and low magnetic field of the National Spherical Torus Experiment (NSTX) create many challenges for plasma diagnostics and control, as well as opportunities for studying new plasma phenomena. This paper describes the diagnostics now installed for studies of confinement, stability and edge plasma phenomena, and some of the diagnostic developments planned for the near future. The design of the plasma control system and plans for its development are also presented.

M.G. Bell; R.E. Bell; B.P. LeBlanc; S.S. Medley; and the NSTX Research Team

2001-08-30T23:59:59.000Z

145

Proceedings from EPRI's XV Substation Diagnostic Conference  

Science Conference Proceedings (OSTI)

The EPRI Substation Equipment Diagnostics Conference XV convened in Orlando, Florida, from March 2 5, 2008, to assemble, assess, and communicate information on the latest diagnostic techniques, monitoring devices, and systems for substation equipment. This conference was the fifteenth in a series that began in 1992. It focused on the latest monitoring and diagnostic techniques being developed by EPRI and others in research programs, as well as equipment and programs now available and in service by electr...

2008-04-28T23:59:59.000Z

146

Diagnostic Measurement and Performance Feedback for Residential...  

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

Performance Feedback for Residential Space Conditioning Equipment Building America Expert Meeting 26-April-2010 Held at NIST, Gaithersburg, MD Diagnostic Measurement and...

147

PEVELOPMENT OF FLUORESCENCE LIFETIME DIAGNOSTIC  

Office of Scientific and Technical Information (OSTI)

4 4 PEVELOPMENT OF FLUORESCENCE LIFETIME DIAGNOSTIC w I Project Accomplishments Summary (Attachment I) CRADA NO. TSB-1449-97 Date: U 1 8 1 9 8 Revision: 1 A . Parties The project is a relationship between the Lawrence Livennore National Laboratoq (LLNL) and Optiphase, Inc. University of California Lawrence Livermore National Laboratory 7000 East Avenue, L-399 Livermore, CA 94550 Optiphase, h c 7652 Haskell Ave. Van Nuys, CA 91406 Technical Contact - D r . Pepe Davis (8 18)782-0997ext 1 12 B . Background Fiber-optic-based sensors are excellent candidates for detecting the presence and monitoring the levels of degradation products in stockpiled weapons. Specifically, fl uorescence-based sensors are extremely sensitive, can have high specificity for compounds of interest, and are "e~ectrically

148

Target Diagnostics Supports NIF's Path to Ignition  

SciTech Connect

The physics requirements derived from the National Ignition Facility (NIF) experimental campaigns are leading to a wide variety of target diagnostics. Software development for the control and analysis of these diagnostics is included in the NIF Integrated Computer Control System, Diagnostic Control System and Data Visualization. These projects implement the configuration, controls, data analysis and visual representation of most of these diagnostics. To date, over 40 target diagnostics have been developed to support NIF experiments. In 2011 diagnostics were developed or enhanced to measure Ignition performance in a high neutron yield environment. Performance is optimized around four key variables: Adiabat (a) which is the strength and timing of four shocks delivered to the target, Velocity (V) of the imploding target, Mix (M) is the uniformity of the burn, and the Shape (S) of the imploding Deuterium Tritium (DT) hot spot. The diagnostics used to measure each of these parameters is shown in figure 1. Adiabat is measured using the Velocity Interferometer System for Any Reflector (VISAR) diagnostic consisting of three streak cameras. To provide for more accurate adiabat measurements the VISAR streak cameras were enhanced in FY11 with a ten comb fiducial signal controller to allow for post shot correction of the streak camera sweep non-linearity. Mix is measured by the Neutron Time of Flight (NTOF) and Radiochemical Analysis of Gaseous Samples (RAGS) diagnostics. To accommodate high neutron yield shots, NTOF diagnostic controls are being modified to use Mach Zehnder interferometer signals to allow the digitizers to be moved from near the target chamber to the neutron shielded diagnostic mezzanine. In December 2011 the first phase of RAGS diagnostic commissioning will be completed. This diagnostic will analyze the tracers that are added to NIF target capsules that undergo nuclear reactions during the shot. These gases are collected and purified for nuclear counting by the RAGS system. Three new instrument controllers were developed and commissioned to support this diagnostic. A residual-gas analyzer (RGA) instrument measures the gas content at various points in the system. The Digital Gamma Spectrometer instrument measures the radiological spectrum of the decaying gas isotopes. A final instrument controller was developed to interface to a PLC based Gas collection system. In order to support the implosion velocity measurements an additional Gated X-ray Detector (GXD) diagnostic was tested and commissioned. This third GXD views the target through a slit contained in its snout and allows the other GXD diagnostics to be used for measuring the shape on the same shot. In order to measure the implosion shape in a high neutron environment, Actide Readout In A Neutron Environment (ARIANE) and Neutron Imaging (NI) diagnostics were commissioned. The controls for ARIANE, a fixed port gated x-ray imager, contain a neutron shielded camera and micro channel plate pulser with its neutron sensitive electronics located in the diagnostic mezzanine. The NI diagnostic is composed of two Spectral Instruments SI-1000 cameras located 20M from the target and provides neutron images of the DT hot spot for high yield shots. The development and commissioning of these new or enhanced diagnostics in FY11 have provided meaningful insight that facilitates the optimization of the four key Ignition variables. In FY12 they will be adding three new diagnostics and enhancing four existing diagnostics in support of the continuing optimization series of campaigns.

Shelton, R

2011-12-07T23:59:59.000Z

149

Enriched Analyses with Assimilation of SALLJEX Data  

Science Conference Proceedings (OSTI)

This paper aims at generating a set of enriched analyses by assimilating the data collected during the South American Low-Level Jet Experiment (SALLJEX) in southeastern South America during the summer season 2002/03. The analyses are generated ...

Yanina García Skabar; Matilde Nicolini

2009-12-01T23:59:59.000Z

150

Pawnee Nation Energy Option Analyses  

SciTech Connect

Pawnee Nation of Oklahoma Energy Option Analyses In 2003, the Pawnee Nation leadership identified the need for the tribe to comprehensively address its energy issues. During a strategic energy planning workshop a general framework was laid out and the Pawnee Nation Energy Task Force was created to work toward further development of the tribe’s energy vision. The overarching goals of the “first steps” project were to identify the most appropriate focus for its strategic energy initiatives going forward, and to provide information necessary to take the next steps in pursuit of the “best fit” energy options. Description of Activities Performed The research team reviewed existing data pertaining to the availability of biomass (focusing on woody biomass, agricultural biomass/bio-energy crops, and methane capture), solar, wind and hydropower resources on the Pawnee-owned lands. Using these data, combined with assumptions about costs and revenue streams, the research team performed preliminary feasibility assessments for each resource category. The research team also reviewed available funding resources and made recommendations to Pawnee Nation highlighting those resources with the greatest potential for financially-viable development, both in the near-term and over a longer time horizon. Findings and Recommendations Due to a lack of financial incentives for renewable energy, particularly at the state level, combined mediocre renewable energy resources, renewable energy development opportunities are limited for Pawnee Nation. However, near-term potential exists for development of solar hot water at the gym, and an exterior wood-fired boiler system at the tribe’s main administrative building. Pawnee Nation should also explore options for developing LFGTE resources in collaboration with the City of Pawnee. Significant potential may also exist for development of bio-energy resources within the next decade. Pawnee Nation representatives should closely monitor market developments in the bio-energy industry, establish contacts with research institutions with which the tribe could potentially partner in grant-funded research initiatives. In addition, a substantial effort by the Kaw and Cherokee tribes is underway to pursue wind development at the Chilocco School Site in northern Oklahoma where Pawnee is a joint landowner. Pawnee Nation representatives should become actively involved in these development discussions and should explore the potential for joint investment in wind development at the Chilocco site. Financial incentives for project development are generally structured to provide tribes with access to conventional financing mechanisms. Grant funding for project construction is currently difficult to obtain. Substantial new opportunities for bio-fuel development may exist in the next few years with passage of the 2007 Farm Bill, and through opportunities made available through Oklahoma’s new Bio-energy Center. A review of potential alternatives to Pawnee Nation’s current electricity supply scenario revealed that a range of options could be viable. These include the following scenarios: business as usual, alternative supply, negotiate lower rates with City of Pawnee, focus on reducing energy usage, develop electric utility organization. Under any circumstances, Pawnee Nation should purse strategies to reduce energy usage, as this is the simplest means of reducing electric costs and environmental impacts. The research team also recommends that Pawnee Nation initiate some focused discussions with the City of Pawnee, with GRDA, and with IEC to discuss its wholesale supply purchase options. These discussions will better inform the Pawnee Energy Team of the specific pros and cons of its wholesale power supply options, and will assist the Team’s broader decision-making on utility-related issues. The ultimate path chosen by Pawnee Nation will depend on further consideration of priorities and potential barriers by Pawnee Nation’s Energy Team.

Matlock, M.; Kersey, K.; Riding In, C.

2009-07-21T23:59:59.000Z

151

Diagnostic Medical Sonography Clinical Technical Standards  

E-Print Network (OSTI)

Diagnostic Medical Sonography Clinical Technical Standards Listed below are the technical standards identified for students in the Diagnostic Medical Sonography (DMS) clinical program. Review each standard and communicate effectively. Smell Be able to detect electrical hazards inherent in medical equipment Speech

Barrash, Warren

152

Deposition Diagnostics for Next-step Devices  

DOE Green Energy (OSTI)

The scale-up of deposition in next-step devices such as ITER will pose new diagnostic challenges. Codeposition of hydrogen with carbon needs to be characterized and understood in the initial hydrogen phase in order to mitigate tritium retention and qualify carbon plasma facing components for DT operations. Plasma facing diagnostic mirrors will experience deposition that is expected to rapidly degrade their reflectivity, posing a new challenge to diagnostic design. Some eroded particles will collect as dust on interior surfaces and the quantity of dust will be strictly regulated for safety reasons - however diagnostics of in-vessel dust are lacking. We report results from two diagnostics that relate to these issues. Measurements of deposition on NSTX with 4 Hz time resolution have been made using a quartz microbalance in a configuration that mimics that of a typical diagnostic mirror. Often deposition was observed immediately following the discharge suggesting that diagnostic shutters should be closed as soon as possible after the time period of interest. Material loss was observed following a few discharges. A novel diagnostic to detect surface particles on remote surfaces was commissioned on NSTX.

C.H. Skinner; A.L. Roquemore; the NSTX team; A. Bader; W.R. Wampler

2004-06-15T23:59:59.000Z

153

Soft Computing for diagnostics in equipment service  

Science Conference Proceedings (OSTI)

We present methods and tools from the Soft Computing (SC) domain, which is used within the diagnostics and prognostics framework to accommodate imprecision of real systems. SC is an association of computing methodologies that includes as its principal ... Keywords: Diagnosis, Diagnostics, Hybrid Systems, Soft Computing

Piero Bonissone; Kai Goebel

2001-09-01T23:59:59.000Z

154

Collected abstracts on particle beam diagnostic systems  

SciTech Connect

This report contains a compilation of abstracts on work related to particle beam diagnostics for high temperature plasmas. The abstracts were gathered in early 1978 and represent the status of the various programs as of that date. It is not suggested that this is a comprehensive list of all the work that is going on in the development of particle beam diagnostics, but it does provide a representative view of the work in this field. For example, no abstracts were received from the U.S.S.R. even though they have considerable activity in particle beam diagnostics.

Hickok, R.L.

1979-01-01T23:59:59.000Z

155

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems  

E-Print Network (OSTI)

in Fault Diagnostics for HVAC Systems Massieh Najafi 1 ,tools for determining HVAC diagnostics, methods todetect faults in HVAC systems are still generally

Najafi, Massieh

2010-01-01T23:59:59.000Z

156

Modeling and Measurement Constraints in Fault Diagnostics for...  

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

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Title Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Publication Type Journal...

157

A Statistical Pattern Analysis Framework for Rooftop Unit Diagnostics  

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

A Statistical Pattern Analysis Framework for Rooftop Unit Diagnostics Title A Statistical Pattern Analysis Framework for Rooftop Unit Diagnostics Publication Type Journal Article...

158

Fuel-motion diagnostics and cineradiography  

SciTech Connect

Nuclear and non-nuclear applications of cineradiography are reviewed, with emphasis on diagnostic instrumentation for in-pile transient-reactor safety testing of nuclear fuel motion. The primary instrument for this purpose has been the fast-neutron hodoscope, which has achieved quantitative monitoring of time, location, mass, and velocity of fuel movement under the difficult conditions associated with transient-reactor experiments. Alternative diagnostic devices that have been developed have not matched the capabilities of the hodoscope. Other applications for the fuel-motion diagnostic apparatus are also evolving, including time-integrated radiography and direct time- and space-resolved fuel-pin power monitoring. Although only two reactors are now actively equipped with high-resolution fuel-motion diagnostic systems, studies and tests have been carried out in and for many other reactors.

DeVolpi, A.

1982-09-01T23:59:59.000Z

159

On the Accuracy of Omega Diagnostic Computations  

Science Conference Proceedings (OSTI)

The accuracies of algorithms used to compute quasi-geostrophic diagnostic parameters such as Hoskins' Q-vector and its divergence are evaluated. Analytically-determined height values are invoked at grid points representing three pressure surfaces,...

Stanley L. Barnes

1986-09-01T23:59:59.000Z

160

Bolometer diagnostics on Alcator C-mod  

E-Print Network (OSTI)

Bolometry is a diagnostic technique common to most tokamak fusion experiments. Bolometers are so widespread because they provide an important measure of the energy lost from confined plasmas as radiation, as well as being ...

Youngblood, Brian Joaquin

2004-01-01T23:59:59.000Z

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161

Practical Diagnostics for Evaluating Residential Commissioning Metrics  

SciTech Connect

In this report, we identify and describe 24 practical diagnostics that are ready now to evaluate residential commissioning metrics, and that we expect to include in the commissioning guide. Our discussion in the main body of this report is limited to existing diagnostics in areas of particular concern with significant interactions: envelope and HVAC systems. These areas include insulation quality, windows, airtightness, envelope moisture, fan and duct system airflows, duct leakage, cooling equipment charge, and combustion appliance backdrafting with spillage. Appendix C describes the 83 other diagnostics that we have examined in the course of this project, but that are not ready or are inappropriate for residential commissioning. Combined with Appendix B, Table 1 in the main body of the report summarizes the advantages and disadvantages of all 107 diagnostics. We first describe what residential commissioning is, its characteristic elements, and how one might structure its process. Our intent in this discussion is to formulate and clarify these issues, but is largely preliminary because such a practice does not yet exist. Subsequent sections of the report describe metrics one can use in residential commissioning, along with the consolidated set of 24 practical diagnostics that the building industry can use now to evaluate them. Where possible, we also discuss the accuracy and usability of diagnostics, based on recent laboratory work and field studies by LBNL staff and others in more than 100 houses. These studies concentrate on evaluating diagnostics in the following four areas: the DeltaQ duct leakage test, air-handler airflow tests, supply and return grille airflow tests, and refrigerant charge tests. Appendix A describes those efforts in detail. In addition, where possible, we identify the costs to purchase diagnostic equipment and the amount of time required to conduct the diagnostics. Table 1 summarizes these data. Individual equipment costs for the 24 practical diagnostics range from a few hundred dollars to many thousands of dollars. The higher costs are associated with infrared thermography and state-of-the-art automated diagnostic systems. Most tests can be performed in one hour or less, using equipment priced toward the lower end of the cost spectrum.

Wray, Craig; Walker, Iain; Siegel, Jeff; Sherman, Max

2002-06-11T23:59:59.000Z

162

Fault Tree Based Diagnostics Using Fuzzy Logic  

Science Conference Proceedings (OSTI)

Fuzzy set theory is investigated as a tool for the diagnostics of systems described by means of a fault tree. The objective is to diagnose component failures from the observation of fuzzy symptoms using the information contained in a fault tree. A two-step ... Keywords: causal reasoning, component failures, failure analysis, failure modes, fault tree based diagnostics, fuzzy logic, fuzzy symptoms, minimal cut-sets, triggered gates, two-step procedure

P. Gmytrasiewicz; J. A. Hassberger; J. C. Lee

1990-11-01T23:59:59.000Z

163

FAQS Job Task Analyses- Chemical Processing  

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

FAQS Job Task Analyses are performed on the Function Area Qualification Standards. The FAQS Job Task Analyses consists of: Developing a comprehensive list of tasks that define the job such as the duties and responsibilities which include determining their levels of importance and frequency. Identifying and evaluating competencies. Last step is evaluating linkage between job tasks and competencies.

164

Condition Monitoring and Diagnostics of Bushings, Current Transformers, and Voltage Transformers by Oil Analysis  

Science Conference Proceedings (OSTI)

This study was undertaken to determine the merits of oil analysis for condition monitoring and diagnostics of bushings, current, potential and voltage transformers. Oil test results and equipment information from 193 bushings, 830 current transformers, 194 potential transformers and 268 voltage transformers were analyzed. Statistical analyses was used to assigns equipment condition codes from 1 (Normal Operation) to 4 (Extreme) based on threshold limits for dissolved gas in oil results. A more recent set...

2006-12-12T23:59:59.000Z

165

Building Technologies Office: Integrated Whole-Building Energy Diagnostics  

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

Integrated Integrated Whole-Building Energy Diagnostics Research Project to someone by E-mail Share Building Technologies Office: Integrated Whole-Building Energy Diagnostics Research Project on Facebook Tweet about Building Technologies Office: Integrated Whole-Building Energy Diagnostics Research Project on Twitter Bookmark Building Technologies Office: Integrated Whole-Building Energy Diagnostics Research Project on Google Bookmark Building Technologies Office: Integrated Whole-Building Energy Diagnostics Research Project on Delicious Rank Building Technologies Office: Integrated Whole-Building Energy Diagnostics Research Project on Digg Find More places to share Building Technologies Office: Integrated Whole-Building Energy Diagnostics Research Project on AddThis.com...

166

Comparative guide to emerging diagnostic tools for large commercial HVAC systems  

E-Print Network (OSTI)

Manual Diagnostic Tools ENFORMA ® Portable Diagnostic Solutions (ENFORMA software), Architectural Energy Corporation (AEC) (

Friedman, Hannah; Piette, Mary Ann

2001-01-01T23:59:59.000Z

167

Experiments Concerning Variability among Subjective Analyses  

Science Conference Proceedings (OSTI)

The variability of subjective (hand) analyses is explored by examining the results of two synoptic laboratory experiments. Two groups of analysts participated in the first experiment, one consisting of 13 senior meteorology students (1977), the ...

Dayton G. Vincent; Herbert Borenstein

1980-10-01T23:59:59.000Z

168

NETL: Gasification Systems and Industry Analyses Studies  

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

Analyses Studies Analyses Studies Gasification Systems Reference Shelf – Systems and Industry Analyses Studies Table of Contents Cost and Performance Baseline for Fossil Energy Power Plants Studies Gasification Systems Program's Systems and Industry Analyses Studies DOE/NETL possesses strong systems analysis and policy-support capabilities. Systems analysis in support of the Gasification Systems Program consists of conducting various energy analyses that provide input to decisions on issues such as national plans and programs, resource use, environmental and energy security policies, technology options for research and development programs, and paths to deployment of energy technology. Cost and Performance Baseline for Fossil Energy Power Plants Studies The Cost and Performance Baseline for Fossil Energy Power Plants studies establish up-to-date estimates for the cost and performance of combustion and gasification based power plants as well as options for co-generating synthetic natural gas and fuels, all with and without carbon dioxide capture and storage. Several ranks of coal are being assessed in process configurations that are based on technology that could be constructed today such that the plant could be operational in the 2010 - 2015 timeframe. The analyses were performed on a consistent technical and economic basis that accurately reflects current market conditions.

169

Princeton Plasma Physics Lab - Laser diagnostics  

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

laser-diagnostics The Multi-Point laser-diagnostics The Multi-Point Thomson Scattering (MPTS) diagnostic system has been providing time dependent Te and ne profile measurements on NSTX for ten years. en Premiere issue of "Quest" magazine details PPPL's strides toward fusion energy and advances in plasma science http://www.pppl.gov/news/2013/09/premiere-issue-quest-magazine-details-pppls-strides-toward-fusion-energy-and-advances-0

170

Nuclear diagnostics in support of ICF experiments  

SciTech Connect

As the yields of Inertial Confinement Fusion (ICF) experiments increase to NIF levels new diagnostic techniques for studying details of fusion burn behavior will become feasible. The new techniques will provide improved measurements of fusion burn temperature and history. Improved temperature measurements might be achieved with magnetic spectroscopy of fusion neutrons. High-bandwidth fusion reaction history will be measured with fusion-specific {gamma}-ray diagnostics. Additional energy-resolved {gamma}-ray might be able to study a selection of specific behaviors during fusion burn. Present ICF yields greater than 10{sup 13} neutrons are sufficient to demonstrate the basic methods that underlie the new techniques. As ICF yields increase, the diagnostics designs adjusted accordingly in order to provide clear and specific data on fusion burn performance.

Moran, M.J.; Hall, J.

1996-06-05T23:59:59.000Z

171

Tokamak physics experiment: Diagnostic windows study  

SciTech Connect

We detail the study of diagnostic windows and window thermal stress remediation in the long-pulse, high-power Tokamak Physics Experiment (TPX) operation. The operating environment of the TPX diagnostic windows is reviewed, thermal loads on the windows estimated, and cooling requirements for the windows considered. Applicable window-cooling technology from other fields is reviewed and its application to the TPX windows considered. Methods for TPX window thermal conditioning are recommended, with some discussion of potential implementation problems provided. Recommendations for further research and development work to ensure performance of windows in the TPX system are presented.

Merrigan, M.; Wurden, G.A.

1995-11-01T23:59:59.000Z

172

Dichroic beamsplitter for high energy laser diagnostics  

DOE Patents (OSTI)

Wavefront control techniques are provided for the alignment and performance optimization of optical devices. A Shack-Hartmann wavefront sensor can be used to measure the wavefront distortion and a control system generates feedback error signal to optics inside the device to correct the wavefront. The system can be calibrated with a low-average-power probe laser. An optical element is provided to couple the optical device to a diagnostic/control package in a way that optimizes both the output power of the optical device and the coupling of the probe light into the diagnostics.

LaFortune, Kai N (Livermore, CA); Hurd, Randall (Tracy, CA); Fochs, Scott N (Livermore, CA); Rotter, Mark D (San Ramon, CA); Hackel, Lloyd (Livermore, CA)

2011-08-30T23:59:59.000Z

173

Mthodologie d'analyse et de dveloppement d'un applicatif de test des fins de diagnostic  

E-Print Network (OSTI)

, ELECTRONIC Reliability design handbook", MIL-HDBK- 338B, 1er octobre 1998. [3] Ministry of Defence (UK

Paris-Sud XI, Université de

174

Supplement Analyses (SA) | Department of Energy  

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

Services » NEPA Documents » Supplement Analyses (SA) Services » NEPA Documents » Supplement Analyses (SA) Supplement Analyses (SA) A document that DOE prepares in accordance with DOE NEPA regulations (10 CFR 1021.314(c)) to determine whether a supplemental or new EIS should be prepared pursuant to CEQ NEPA regulations (40 CFR 1502.9(c). If you have any trouble finding a specific document, please contact AskNEPA@hq.doe.gov for assistance. Documents Available for Download October 10, 2013 EA-1812: Final Supplement Analysis Haxtun Wind Energy Project, Logan and Phillips Counties, CO September 10, 2013 EIS-0310-SA-02: Supplement Analysis Nuclear Infrastructure Programmatic Environmental Impact Statement Supplement Analysis Determination for Plutonium-238 Production for Radioisotope Power Systems June 14, 2013 EA-1562-SA-1: Supplement Analysis

175

IntellIgence Added downsized diagnostics  

E-Print Network (OSTI)

IntellIgence Added FA L L 10 InsIde: downsized diagnostics Instant Messenger solar panel windmill plug-in vehicle smart meter smart appliance utility substation transformer a/c How Systems Engineers systems, and nanotechnologies, to name a few, and link these promising research efforts with the resources

Goldberg, Bennett

176

The Neutron Imaging Diagnostic at NIF  

SciTech Connect

A neutron imaging diagnostic has recently been commissioned at the National Ignition Facility (NIF). This new system is an important diagnostic tool for inertial fusion studies at the NIF for measuring the size and shape of the burning DT plasma during the ignition stage of ICF implosions. The imaging technique utilizes a pinhole neutron aperture, placed between the neutron source and a neutron detector. The detection system measures the two dimensional distribution of neutrons passing through the pinhole. This diagnostic has been designed to collect two images at two times. The long flight path for this diagnostic, 28 m, results in a chromatic separation of the neutrons, allowing the independently timed images to measure the source distribution for two neutron energies. Typically the first image measures the distribution of the 14 MeV neutrons and the second image of the 6-12 MeV neutrons. The combination of these two images has provided data on the size and shape of the burning plasma within the compressed capsule, as well as a measure of the quantity and spatial distribution of the cold fuel surrounding this core.

Merrill, F E; Buckles, R; Clark, D; Danly, C R; Drury, O B; Dzenitis, J M; Fatherly, V E; Fittinghoff, D N; Gallegos, R; Grim, G P; Guler, N; Loomis, E N; Lutz, S; Malone, R M; Martinson, D D; Mares, D; Morley, D J; Morgan, G L; Oertel, J A; Tregillis, I L; Volegov, P L; Weiss, P B; Wilde, C H

2012-10-01T23:59:59.000Z

177

The neutron imaging diagnostic at NIF (invited)  

SciTech Connect

A neutron imaging diagnostic has recently been commissioned at the National Ignition Facility (NIF). This new system is an important diagnostic tool for inertial fusion studies at the NIF for measuring the size and shape of the burning DT plasma during the ignition stage of Inertial Confinement Fusion (ICF) implosions. The imaging technique utilizes a pinhole neutron aperture, placed between the neutron source and a neutron detector. The detection system measures the two dimensional distribution of neutrons passing through the pinhole. This diagnostic has been designed to collect two images at two times. The long flight path for this diagnostic, 28 m, results in a chromatic separation of the neutrons, allowing the independently timed images to measure the source distribution for two neutron energies. Typically the first image measures the distribution of the 14 MeV neutrons and the second image of the 6-12 MeV neutrons. The combination of these two images has provided data on the size and shape of the burning plasma within the compressed capsule, as well as a measure of the quantity and spatial distribution of the cold fuel surrounding this core.

Merrill, F. E.; Clark, D. D.; Danly, C. R.; Drury, O. B.; Fatherley, V. E.; Gallegos, R.; Grim, G. P.; Guler, N.; Loomis, E. N.; Martinson, D. D.; Mares, D.; Morley, D. J.; Morgan, G. L.; Oertel, J. A.; Tregillis, I. L.; Volegov, P. L.; Wilde, C. H.; Wilson, D. C. [Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States); Bower, D.; Dzenitis, J. M. [Livermore National Laboratory, Livermore, California 94550 (United States); and others

2012-10-15T23:59:59.000Z

178

Substation evaluation using Diagnostic Logic System (DIALOG)  

Science Conference Proceedings (OSTI)

This project investigated the feasibility of applying a Diagnostic Logic System (DIAGLOG) to evaluate substation operation. The purpose was to see if a determination can be made as to whether the equipment in a substation operated correctly or not when an operating event occurred. The work was directed toward modifying an already proven diagnostic system to create a simplified procedure for describing the operation of substation equipment. Special operating tables or modules of logic were identified for describing relay and breaker operations. The resulting model composed of all the modules connected together is used to evaluate the actual observations available at the substation, and to compare them with what the substation should have produced. The report covers the diagnostic approach used, information on how to construct the modules and examples of diagnosis. Also covered are discussions on the special features of substations that offer a challenge to performing diagnostics. Included in the report are the results of modeling a typical substation and several notes are provided along with an initial library of typical modules which were developed in modeling one of the substations belonging to the Pacific Gas and Electric Company. This substation served as a feasibility demonstrator. 15 figs.

Andre, W.L.

1989-08-01T23:59:59.000Z

179

INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS  

E-Print Network (OSTI)

INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS by Aderiano M. da Silva, B.S. A Thesis;i Abstract Induction motors are used worldwide as the "workhorse" in industrial applications material. However, induction motor faults can be detected in an initial stage in order to prevent

Povinelli, Richard J.

180

Diagnostics for FIRE Kenneth M. Young  

E-Print Network (OSTI)

&D and Integration Facility h ardware integration, mock-ups & in stallation Shielding/Remote Handling Integration. · Running fibers hot only affects the long-term absorption. · Great disparity in radiation effects in an -diagnostic Plasma 90° 60° 45° 20° Vacuum Vessel Test Cell Floor Quartz coherent fiber optic bundles Radiation

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Systems/Process Monitoring, Diagnostics and Control - Nuclear Engineering  

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

Capabilities > Nuclear Systems Capabilities > Nuclear Systems Technologies > Systems/Process Monitoring, Diagnostics and Control Capabilities Nuclear Systems Technologies Nuclear Criticality Safety Research Reactor Analysis Decontamination and Decommissioning Systems/Process Monitoring, Diagnostics and Control Overview Process Monitoring & Signal Validation Diagnostic & Advisory Systems Advanced (AI-based) Nonlinear Controllers for Industrial Processes Artificial intelligence Other Capabilities Work with Argonne Contact us For Employees Site Map Help Systems/Process Monitoring, Diagnostics and Control Bookmark and Share Systems/Process Monitoring, Diagnostics and Control Systems/Process Monitoring, Diagnostics and Control. Click on image to view larger image. The goal of the Nuclear Engineering Division's research on advanced

182

Analysing sequences of TV-frames  

Science Conference Proceedings (OSTI)

A system is being implemented to analyse sequences of TV-frames from real world scenes like a street intersection with cars. A monocular black/white TV-camera will record - without changing its position or viewing direction - a scene in realtime on an ...

H.-H. Nagel

1977-08-01T23:59:59.000Z

183

Chemical Analyses of Silicon Aerogel Samples  

E-Print Network (OSTI)

After five years of operating, two Aerogel counters: A1 and A2, taking data in Hall A at Jefferson Lab, suffered a loss of performance. In this note possible causes of degradation have been studied. In particular, various chemical and physical analyses have been carried out on several Aerogel tiles and on adhesive tape in order to reveal the presence of contaminants.

I. van der Werf; F. Palmisano; R. De Leo; S. Marrone

2008-04-22T23:59:59.000Z

184

Modular Pluggable Analyses for Data Structure Consistency  

Science Conference Proceedings (OSTI)

Hob is a program analysis system that enables the focused application of multiple analyses to different modules in the same program. In our approach, each module encapsulates one or more data structures and uses membership in abstract sets to characterize ... Keywords: Typestate, data structure, invariant, program analysis, program verification, shape analysis, formal methods, programming language design.

Viktor Kuncak; Patrick Lam; Karen Zee; Martin C. Rinard

2006-12-01T23:59:59.000Z

185

Chemical Analyses of Silicon Aerogel Samples  

E-Print Network (OSTI)

After five years of operating, two Aerogel counters: A1 and A2, taking data in Hall A at Jefferson Lab, suffered a loss of performance. In this note possible causes of degradation have been studied. In particular, various chemical and physical analyses have been carried out on several Aerogel tiles and on adhesive tape in order to reveal the presence of contaminants.

van der Werf, I; De Leo, R; Marrone, S

2008-01-01T23:59:59.000Z

186

Uncertainty quantification approaches for advanced reactor analyses.  

SciTech Connect

The original approach to nuclear reactor design or safety analyses was to make very conservative modeling assumptions so as to ensure meeting the required safety margins. Traditional regulation, as established by the U. S. Nuclear Regulatory Commission required conservatisms which have subsequently been shown to be excessive. The commission has therefore moved away from excessively conservative evaluations and has determined best-estimate calculations to be an acceptable alternative to conservative models, provided the best-estimate results are accompanied by an uncertainty evaluation which can demonstrate that, when a set of analysis cases which statistically account for uncertainties of all types are generated, there is a 95% probability that at least 95% of the cases meet the safety margins. To date, nearly all published work addressing uncertainty evaluations of nuclear power plant calculations has focused on light water reactors and on large-break loss-of-coolant accident (LBLOCA) analyses. However, there is nothing in the uncertainty evaluation methodologies that is limited to a specific type of reactor or to specific types of plant scenarios. These same methodologies can be equally well applied to analyses for high-temperature gas-cooled reactors and to liquid metal reactors, and they can be applied to steady-state calculations, operational transients, or severe accident scenarios. This report reviews and compares both statistical and deterministic uncertainty evaluation approaches. Recommendations are given for selection of an uncertainty methodology and for considerations to be factored into the process of evaluating uncertainties for advanced reactor best-estimate analyses.

Briggs, L. L.; Nuclear Engineering Division

2009-03-24T23:59:59.000Z

187

Development of a synthetic phase contrast imaging diagnostic  

E-Print Network (OSTI)

A “synthetic diagnostic” has been developed to calculate the expected experimental response of phase contrast imaging (PCI), a scattering diagnostic used to measure density fluctuations in laboratory plasmas, to a tokamak ...

Rost, Jon C.

188

2010-12-1-DICE-Diagnostic-Service-Description  

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

Editor: Joe Metzger Status: DRAFT (v1.0) Date: 2010-12-1 1 General Service Description for DICE Network Diagnostic Services The DICE collaboration network diagnostic service will...

189

Diagnostic examination of Generation 2 lithium-ion cells and assessment ofperformance degradation mechanisms.  

DOE Green Energy (OSTI)

The Advanced Technology Development (ATD) Program is a multilaboratory effort to assist industrial developers of high-power lithium-ion batteries overcome the barriers of cost, calendar life, abuse tolerance, and low-temperature performance so that this technology may be rendered practical for use in hybrid electric vehicles (HEVs). Included in the ATD Program is a comprehensive diagnostics effort conducted by researchers at Argonne National Laboratory (ANL), Brookhaven National Laboratory (BNL), and Lawrence Berkeley National Laboratory (LBNL). The goals of this effort are to identify and characterize processes that limit lithium-ion battery performance and calendar life, and ultimately to describe the specific mechanisms that cause performance degradation. This report is a compilation of the diagnostics effort conducted since spring 2001 to characterize Generation 2 ATD cells and cell components. The report is divided into a main body and appendices. Information on the diagnostic approach, details from individual diagnostic techniques, and details on the phenomenological model used to link the diagnostic data to the loss of 18650-cell electrochemical performance are included in the appendices. The main body of the report includes an overview of the 18650-cell test data, summarizes diagnostic data and modeling information contained in the appendices, and provides an assessment of the various mechanisms that have been postulated to explain performance degradation of the 18650 cells during accelerated aging. This report is intended to serve as a ready reference on ATD Generation 2 18650-cell performance and provide information on the tools for diagnostic examination and relevance of the acquired data. A comprehensive account of our experimental procedures and resulting data may be obtained by consulting the various references listed in the text. We hope that this report will serve as a roadmap for the diagnostic analyses of other lithium-ion technologies being evaluated for HEV applications. It is our hope that the information contained in this report will lead to the development of new lithium-ion cell chemistries and designs that will meet the 15-year cell calendar-life goal established by DOE's FreedomCar and Fuel Partnership.

Abraham, D. P.; Dees, D. W.; Knuth, J.; Reynolds, E.; Gerald, R.; Hyung,Y.-E.; Belharouak, I.; Stoll, M.; Sammann, E.; MacLaren, S.; Haasch, R.; Twesten,R.; Sardela, M.; Battaglia, V.; Cairns, E.; Kerr, J.; Kerlau, M.; Kostecki, R.; Lei,J.; McCarthy, K.; McLarnon, F.; Reimer, J.; Richardson, T.; Ross, P.; Sloop,S.; Song, X.; Zhuang, V.; Balasubramanian, M.; McBreen, J.; Chung, K.-Y.; Yang, X.Q.; Yoon, W.-S.; Norin, L.

2005-07-15T23:59:59.000Z

190

Renewable Energy Development: Databases, Tools, and Analyses  

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

Renewable Energy Development: Databases, Tools, and Analyses Renewable Energy Development: Databases, Tools, and Analyses For over 20 years, EVS has used geospatial databases and technologies for environmental analysis of energy technologies and programs, with a focus on renewable energy. EVS has developed extensive geospatial libraries of energy and environmental data to support our work, partnered with a multi-disciplinary team of scientists and engineers to analyze impacts of potential projects and programs, created models to simulate energy and environmental processes, and produced web-based and desktop tools to help stakeholders understand issues and participate in decision making. The geographic context of energy and environmental issues is so fundamental to decision making that many of our projects routinely involve geospatial

191

Sensitivity in risk analyses with uncertain numbers.  

SciTech Connect

Sensitivity analysis is a study of how changes in the inputs to a model influence the results of the model. Many techniques have recently been proposed for use when the model is probabilistic. This report considers the related problem of sensitivity analysis when the model includes uncertain numbers that can involve both aleatory and epistemic uncertainty and the method of calculation is Dempster-Shafer evidence theory or probability bounds analysis. Some traditional methods for sensitivity analysis generalize directly for use with uncertain numbers, but, in some respects, sensitivity analysis for these analyses differs from traditional deterministic or probabilistic sensitivity analyses. A case study of a dike reliability assessment illustrates several methods of sensitivity analysis, including traditional probabilistic assessment, local derivatives, and a ''pinching'' strategy that hypothetically reduces the epistemic uncertainty or aleatory uncertainty, or both, in an input variable to estimate the reduction of uncertainty in the outputs. The prospects for applying the methods to black box models are also considered.

Tucker, W. Troy; Ferson, Scott

2006-06-01T23:59:59.000Z

192

Overview of SNS accelerator shielding analyses  

Science Conference Proceedings (OSTI)

The Spallation Neutron Source is an accelerator driven neutron scattering facility for materials research. During all phases of SNS development, including design, construction, commissioning and operation, extensive neutronics work was performed in order to provide adequate shielding, to assure safe facility operation from radiation protection point of view, and to optimize performance of the accelerator and target facility. Presently, most of the shielding work is concentrated on the beam lines and instrument enclosures to prepare for commissioning, safe operation and adequate radiation background in the future. Although the accelerator is built and in operation mode, there is extensive demand for shielding and activation analyses. It includes redesigning some parts of the facility, facility upgrades, designing additional structures, storage and transport containers for accelerator structures taken out of service, and performing radiation protection analyses and studies on residual dose rates inside the accelerator. (authors)

Popova, I.; Gallmeier, F. X.; Ferguson, P.; Iverson, E.; Lu, W. [ORNL/SNS, MS6475, PO Box 2008, Oak Ridge, TN 37831-6471 (United States)

2012-07-01T23:59:59.000Z

193

Analyses and characterization of double shell tank  

Science Conference Proceedings (OSTI)

Evaporator candidate feed from tank 241-AP-108 (108-AP) was sampled under prescribed protocol. Physical, inorganic, and radiochemical analyses were performed on tank 108-AP. Characterization of evaporator feed tank waste is needed primarily for an evaluation of its suitability to be safely processed through the evaporator. Such analyses should provide sufficient information regarding the waste composition to confidently determine whether constituent concentrations are within not only safe operating limits, but should also be relevant to functional limits for operation of the evaporator. Characterization of tank constituent concentrations should provide data which enable a prediction of where the types and amounts of environmentally hazardous waste are likely to occur in the evaporator product streams.

Not Available

1994-10-04T23:59:59.000Z

194

The EMMA Accelerator, a Diagnostic Systems Overview  

Science Conference Proceedings (OSTI)

The 'EMMA' Non-Scaling Fixed Field Alternating Gradient (ns-FFAG) international project is currently being commissioned at Daresbury Laboratory, UK. This accelerator has been equipped with a number of diagnostic systems to facilitate this. These systems include a novel time-domain-multiplexing BPM system, moveable screen systems, a time-of-flight instrument, Faraday cups, and injection/extraction tomography sections to analyze the single bunch beams. An upgrade still to implement includes the installation of wall current monitors. This paper gives an overview of these systems and shows some data and results from the diagnostics that have contributed to the successful demonstration of a serpentine acceleration by this novel accelerator.

Kalinin, A.; Berg, J.; Bliss, N. Cox, G.; Dufau, M.; Gallagher, A.; Hill, C.; Jones, J.; Ma, L.; McIntosh, P.; Muratori, B.; Oates, A.; Shepherd B.; Smith, R.; Hock, K.; Holder, D.; Ibison, M., Kirkman I.; Borrell, R.; Crisp, J.; Fellenz, B.; Wendt, M.

2011-09-04T23:59:59.000Z

195

Charge Diagnostics for Laser Plasma Accelerators  

SciTech Connect

The electron energy dependence of a scintillating screen (Lanex Fast) was studied with sub-nanosecond electron beams ranging from 106 MeV to 1522 MeV at the Lawrence Berkeley National Laboratory Advanced Light Source (ALS) synchrotron booster accelerator. The sensitivity of the Lanex Fast decreased by 1percent per 100 MeV increase of the energy. The linear response of the screen against the charge was verified with charge density and intensity up to 160 pC/mm2 and 0.4 pC/ps/mm2, respectively. For electron beams from the laser plasma accelerator, a comprehensive study of charge diagnostics has been performed using a Lanex screen, an integrating current transformer, and an activation based measurement. The charge measured by each diagnostic was found to be within +/-10 percent.

Nakamura, K.; Gonsalves, A. J.; Lin, C.; Sokollik, T.; Smith, A.; Rodgers, D.; Donahue, R.; Bryne, W.; Leemans, W. P.

2010-06-01T23:59:59.000Z

196

Time resolved side scatter diagnostics at NOVA  

Science Conference Proceedings (OSTI)

Side scattering of the radiation during the interaction of a laser beam with the long scale length plasma in hohlraum is a difficult problem of relevance to the viability of ICF. It is important to measure the absolute amount of the laser side scatter as well as the angular distribution of that scatter. The OSA diagnostics has been implemented on NOVA to measure these quantities. We have implemented a fiber-optically coupled streak camera to measure the temporally and angularly resolved side scatter radiation at 351 nm at 9 different angles. Filtered PIN diodes were positioned at 31 various angles in the E-field planed and B-field plane of the incident probe beam to sample and measure the scattered radiation at the 351 nm wavelength of the probe. The diode data was used to calibrate the Brillouin power received by the 9 strategically located fiber optic channels. This presentation will describe the OSA and associated diagnostics.

Kyrala, G.A.; Evans, S.C.; Jimerson, J.R.; Fernandez, J.C.

1996-06-01T23:59:59.000Z

197

Beam Diagnostics of the Small Isochronous Ring  

DOE Green Energy (OSTI)

The purpose of this paper is to describe the beam diagnostic systems in the Small Isochronous Ring (SIR) developed and built at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU). SIR is a small-scale experiment that simulates the dynamics of intense beams in large accelerators. A 20 to 30 keV hydrogen or deuterium ion bunch is injected in the ring, extracted after a variable number of turns and its longitudinal profile is studied. Some of the diagnostic tools available in SIR include an emittance measurement system in the injection line, scanning wires in different sections of the ring, phosphor screens at the injection and extraction points and a fast Faraday cup in the extraction line. The design of these systems and the kind of beam information they provide are discussed in detail.

Felix Marti; Eduard Pozdeyev

2004-07-01T23:59:59.000Z

198

Charge Diagnostics for Laser Plasma Accelerators  

Science Conference Proceedings (OSTI)

The electron energy dependence of a scintillating screen (Lanex Fast) was studied with sub-nanosecond electron beams ranging from 106 MeV to 1522 MeV at the Lawrence Berkeley National Laboratory Advanced Light Source (ALS) synchrotron booster accelerator. The sensitivity of the Lanex Fast decreased by 1% per 100 MeV increase of the energy. The linear response of the screen against the charge was verified with charge density and intensity up to 160 pC/mm{sup 2} and 0.4 pC/ps/mm{sup 2}, respectively. For electron beams from the laser plasma accelerator, a comprehensive study of charge diagnostics has been performed using a Lanex screen, an integrating current transformer, and an activation based measurement. The charge measured by each diagnostic was found to be within {+-}10%.

Nakamura, K.; Gonsalves, A. J.; Lin, C.; Sokollik, T.; Smith, A.; Rodgers, D.; Donahue, R.; Bryne, W.; Leemans, W. P. [Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720 (United States)

2010-11-04T23:59:59.000Z

199

Building Diagnostic Market Deployment - Final Report  

SciTech Connect

The work described in this report was done as part of a Cooperative Research and Development Agreement (CRADA) between the U.S. Department of Energy’s Pacific Northwest National Laboratory (PNNL) and KGS Building LLC (KGS). PNNL and KGS both believe that the widespread adoption of automated fault de4tection and diagnostic (AFDD) tools will result in significant reduction to energy and peak energy consumption. The report provides an introduction, and summary of the various tasks performed under the CRADA. The CRADA project had three major focus areas: 1) Technical Assistance for Whole Building Energy Diagnostician (WBE) Commercialization, 2) Market Transfer of the Outdoor Air/Economizer Diagnostician (OAE), and 3) Development and Deployment of Automated Diagnostics to Improve Large Commercial Building Operations.

Katipamula, Srinivas; Gayeski, N.

2012-04-01T23:59:59.000Z

200

Wavelet analysis for gas turbine fault diagnostics  

SciTech Connect

The application of wavelet analysis to diagnosing faults in gas turbines is examined in the present paper. Applying the wavelet transform to time signals obtained from sensors placed on an engine gives information in correspondence to their Fourier transform. Diagnostic techniques based on Fourier analysis of signals can therefore be transposed to the wavelet analysis. In the paper the basic properties of wavelets, in relation to the nature of turbomachinery signals, are discussed. The possibilities for extracting diagnostic information by means of wavelets are examined, by studying the applicability to existing data from vibration, unsteady pressure, and acoustic measurements. Advantages offered, with respect to existing methods based on harmonic analysis, are discussed as well as particular requirements related to practical application.

Aretakis, N.; Mathioudakis, K. [National Technical Univ. of Athens (Greece). Lab. of Thermal Turbomachines

1997-10-01T23:59:59.000Z

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201

SUPPLEMENTARY METHODS Deep-time phylogeographic analyses  

E-Print Network (OSTI)

and S are sisters, and Clade B is early-branching (Fig. 3 in the main text; also supported by DIY-ABC analyses dispersal event was assumed to be associated with a bottleneck. DIY-ABC v1.0.4.46b (Cornuet et al. 2010 statistics given in the main text Methods was also used here. DIY-ABC runs consisted of 3.0x106 simulations

Garrick, Ryan

202

NSLS-II Beam Diagnostics Overview  

SciTech Connect

A new 3rd generation light source (NSLS-II) is in the early stages of construction at Brookhaven National Laboratory. The NSLS-II facility will provide ultra high brightness and flux with exceptional beam stability. It presents several challenges for diagnostics and instrumentation, related to the extremely small emittance. In this paper, we present an overview of all planned instrumentation systems, results from research and development activities; and then focus on other challenging aspects.

Singh,O.; Alforque, R.; Bacha, B.; Blednykh, A.; Cameron, P.; Cheng, W.; Dalesio, L. B.; Della Penna, A. J.; doom, L.; Fliller, R. P.; Ganetis, G.; Heese, R.; Hseuh, H-C.; Johnson, E. D.; Kosciuk, b. N.; Kramer, S. L.; Krinsky, S.; Mead, J.; Ozaki, S.; Padrazo, D.; Pinayev, I.; Ravindranath, R. V.; Rose, J.; Shaftan, T.; Sharma, S.; Skaritka, J.; Tanabe, T.; Tian, Y.; Willeke, F. J.; Yu, L-H.

2009-05-04T23:59:59.000Z

203

Circuit Breaker Diagnostic Tests: Effectiveness Assessment  

Science Conference Proceedings (OSTI)

This report presents preliminary findings from a multiyear research initiative to improve the maintenance of high-voltage circuit breakers and maintain reliable performance with reduced costs through better selection and application of nonintrusive diagnostic tests and techniques. The initiative’s focus is to catalog available tests and techniques and to develop and apply assessment metrics to determine which provide the most useful information.The project team developed a set of ...

2013-12-22T23:59:59.000Z

204

Neutral Particle Analyzer Diagnostic on NSTX  

DOE Green Energy (OSTI)

The Neutral Particle Analyzer (NPA) diagnostic on the National Spherical Torus Experiment (NSTX) utilizes a PPPL-designed E||B spectrometer that measures the energy spectra of minority hydrogen and bulk deuterium species simultaneously with 39 energy channels per mass specie and a time resolution of 1 ms. The calibrated energy range is E = 0.5-150 keV and the energy resolution varies from AE/E = 3-7% over the surface of the microchannel plate detector.

S.S. Medley; A.L. Roquemore

2004-03-16T23:59:59.000Z

205

Building Systems Diagnostics and Predictive Maintenance  

Science Conference Proceedings (OSTI)

There has been an increasing interest in the development of methods and tools for automated fault detection and diagnostics (FDD) of building systems and components in the 1990s. This chapter, written for the CRC Handbook for HVAC&R Engineering, will describe the status of these methods and and methodologies as applied to HVAC&R and building systems and present certain illustrative case studies.

Katipamula, Srinivas; Pratt, Robert G.; Braun, J.

2001-01-01T23:59:59.000Z

206

Edge diagnostics for tandem mirror machines  

SciTech Connect

The edge plasma in a tandem mirror machine shields the plasma core from cold neutral gas and impurities. A variety of diagnostics are used to measure the fueling, shielding, and confinement of the edge plasma in both the end plug and central cell regions. Fast ion gauges and residual gas analyzers measure the gas pressure and composition outside of the plasma. An array of Langmuir probes is used to measure the electron density and temperature. Extreme ultraviolet (euv) and visible spectroscopy are used to measure both the impurity and deuterium densities and to estimate the shielding factor for the core plasma. The linear geometry of a tandem mirror also allows direct measurements of the edge plasma by sampling the ions and electrons lost but the ends of the machine. Representative data obtained by these diagnostics during operation of the Tandem Mirror Experiment (TMX) and Tandem Mirror Experiment-Upgrade (TMX-U) experiments are presented. Diagnostics that are currently being developed to diagnose the edge plasma are also discussed.

Allen, S.L.

1984-09-14T23:59:59.000Z

207

Department of Energy's team's analyses of Soviet designed VVERs  

Science Conference Proceedings (OSTI)

This document provides Appendices A thru K of this report. The topics discussed respectively are: radiation induced embrittlement and annealing of reactor pressure vessel steels; loss of coolant accident blowdown analyses; LOCA blowdown response analyses; non-seismic structural response analyses; seismic analyses; S'' seal integrity; reactor transient analyses; fire protection; aircraft impacts; and boric acid induced corrosion. (FI).

Not Available

1989-09-01T23:59:59.000Z

208

Combination of fluorescence imaging and local spectrophotometry in fluorescence diagnostics of early cancer of larynx and bronchi  

SciTech Connect

The results of comparative studies of autofluorescence and 5-ALA-induced fluorescence of protoporphyrin IX, used in the diagnostics of early cancer of larynx and bronchi, are presented. The autofluorescence and 5-ALA-induced fluorescence images of larynx and bronchial tissues are analysed during the endoscopic study. The method of local spectrophotometry is used to verify findings obtained from fluorescence images. It is shown that such a combined approach can be efficiently used to improve the diagnostics of precancer and early cancer, to detect a primary multiple tumours, as well as for the diagnostics of a residual tumour or an early recurrence after the endoscopic, surgery or X-ray treatment. The developed approach allows one to minimise the number of false-positive results and to reduce the number of biopsies, which are commonly used in the white-light bronchoscopy search for occult cancerous loci. (laser biology and medicine)

Sokolov, Vladimir V; Filonenko, E V; Telegina, L V [P.A. Hertsen Moscow Research Oncological Institute, Moscow (Russian Federation); Boulgakova, N N; Smirnov, V V [A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2002-11-30T23:59:59.000Z

209

Detection & Diagnostic Systems - Nuclear Engineering Division (Argonne)  

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

Departments > Detection & Diagnostic Departments > Detection & Diagnostic Systems DEPARTMENTS Engineering Analysis Nuclear Systems Analysis Research & Test Reactor Nonproliferation and National Security Detection & Diagnostic Systems Engineering Development & Applications Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Detection & Diagnostic Systems Bookmark and Share The Detection & Diagnostic Systems Department conducts research and development related to instruments and non-destructive evaluation (NDE) techniques for characterization of materials and determination of system parameters related to different energy systems (including fossil,

210

Prof. Dr. Sophie Sarre Vakgroep Farmaceutische Chemie, Analyse van  

E-Print Network (OSTI)

Promotor Prof. Dr. Sophie Sarre Vakgroep Farmaceutische Chemie, Analyse van Geneesmiddelen en Michotte Vakgroep Farmaceutische Chemie, Analyse van Geneesmiddelen en Geneesmiddelenkennis Onderzoeksgroep

Glineur, François

211

DOE - Fossil Energy: Reports and Analyses on Natural Gas Imports...  

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

Subscribe to our RSS Feeds You are here: Natural Gas Regulation > Analyses Natural Gas Import & Export Regulation - Analyses & Reports UPDATE: 2012 4th Quarter Report on...

212

ATA diagnostic beam dump conceptual design  

Science Conference Proceedings (OSTI)

A diagnostic beam dump, able to withstand 72,000 pulses (10 kA, 50 MeV/pulse) per shift was designed and analyzed. The analysis shows that the conceptual beam dump design consisting of 80 vitreous carbon plate-foam elements is able to withstand the thermal and mechanical stresses generated. X-rays produced by bremsstrahlung are absorbed by a three element copper plate-foam x-ray absorber. Cooling between bursts of electron pulses is provided by pressurized helium.

Not Available

1981-09-01T23:59:59.000Z

213

Statefinder Diagnostic for Dilaton Dark Energy  

E-Print Network (OSTI)

Statefinder diagnostic is a useful method which can differ one dark energy model from the others. The Statefinder pair $\\{r, s\\}$ is algebraically related to the equation of state of dark energy and its first time derivative. We apply in this paper this method to the dilaton dark energy model based on Weyl-Scaled induced gravitational theory. We investigate the effect of the coupling between matter and dilaton when the potential of dilaton field is taken as the Mexican hat form. We find that the evolving trajectory of our model in the $r-s$ diagram is quite different from those of other dark energy models.

Z. G. Huang; X. M. Song; H. Q. Lu; W. Fang

2008-02-16T23:59:59.000Z

214

2009 Laser Diagnostics in Combustion GRC  

Science Conference Proceedings (OSTI)

Non-intrusive laser diagnostics for the spatially and temporally resolved measurement of temperature, chemical composition, and flow parameters have emerged over the last few decades as major tools for the study of both fundamental and applied combustion science. Many of the important advances in the field can be attributed to the discussions and ideas emanating from this meeting. This conference, originating in 1981 and held biennially, focuses on laser-based methods for measurement of both macroscopic parameters and the underlying microscale physical and chemical processes. Applications are discussed primarily to elucidate new chemical and physical issues and/or interferences that need to be addressed to improve the accuracy and precision of the various diagnostic approaches or to challenge the community of diagnosticians to invent new measurement techniques. Combustion environments present special challenges to the optical diagnostics community as they address measurements relevant to turbulence, spray and mixture formation, or turbulence/chemistry interactions important in practical combustion systems as well as fundamental chemical reactions in stationary laminar flames. The diagnostics considered may be generally classed as being incoherent, where the signals are radiated isotropically, or coherent, where the signals are generated in a directed, beam-like fashion. Both of the foregoing may employ either electronic or Raman resonance enhancement or a combination of both. Prominent incoherent approaches include laser induced fluorescence (LIF), spontaneous Raman scattering, Rayleigh scattering, laser induced incandescence, molecular flow tagging, and Mie scattering and their two- and three-dimensional imaging variants. Coherent approaches include coherent anti-Stokes Raman scattering (CARS), degenerate four wave mixing (DFWM), polarization spectroscopy (PS), laser induced grating spectroscopy (LIGS) and laser-based absorption spectroscopy. Spectroscopic modelling and validation are key elements to extract accurate parameter measurements and discussions focusing on key energy transfer processes, collisional models, and lineshapes. The properties and behaviour of lasers, optical arrangements and techniques, spectrally-selective and dispersive instruments and detectors are also important determinants of successful measurements and are discussed in detail. Recent developments in the conference have highlighted the application of techniques developed for combustion research that find application in other areas such as biological, atmospheric, chemical engineering or plasma processes.

Volker Sick

2009-08-16T23:59:59.000Z

215

Spectroscopic diagnostics for bacteria in biologic sample  

DOE Patents (OSTI)

A method to analyze and diagnose specific bacteria in a biologic sample using spectroscopy is disclosed. The method includes obtaining the spectra of a biologic sample of a non-infected patient for use as a reference, subtracting the reference from the spectra of an infected sample, and comparing the fingerprint regions of the resulting differential spectrum with reference spectra of bacteria in saline. Using this diagnostic technique, specific bacteria can be identified sooner and without culturing, bacteria-specific antibiotics can be prescribed sooner, resulting in decreased likelihood of antibiotic resistance and an overall reduction of medical costs.

El-Sayed, Mostafa A. (Atlanta, GA); El-Sayed, Ivan H. (Somerville, MA)

2002-01-01T23:59:59.000Z

216

Atmospheric Dispersion Modeling in Safety Analyses; GENII  

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

Workshop to Discuss Issues Regarding Deposition Workshop to Discuss Issues Regarding Deposition Velocity June 5-6, 2012 Jeremy Rishel Bruce Napier Atmospheric Dispersion Modeling in Safety Analyses: GENII Today's Presentation.... Will provide a high-level overview of the GENII codes. Will cover basic aspects of GENII's acute atmospheric transport model. Will review the GENII deposition model that is used to estimate the deposition velocity used in plume depletion. 2 GENII Development History 1988 - GENII V1 released ICRP-26/30/48 dosimetry 1990 - GENII V1.485 stabilized Current DOE Toolbox Version 1992 - GENII-S stochastic version 2004 - GENII V2 ICRP-72 age-dependent dosimetry Federal Guidance Report 13 risk factors

217

Planning analyses for geothermal district heating  

DOE Green Energy (OSTI)

Methodology and data bases are described which can provide a comprehensive planning assessment of the potential for geothermal district heating in any US market. This economic systems model encompasses life-cycle costing over a period of rising competitive fuel prices, it addresses the expansion and financing of a district system over time, and it includes an overall optimization of system design. The elemental area for all analyses is the census tract, for which published data allow estimation of residential and commercial heating demands, building retrofit requirements, and competitive fuel consumption and cost. A system type design, an appropriate hot water district piping system, and costing of heat supply is performed for groups of contiguous tracts in any urban market. Groups are aggregated, in decreasing benefit to cost order, to achieve optimal systems. A specific application for Salt Lake City, Utah, is also described.

Tessmer, R.G. Jr.; Karkheck, J.

1979-12-01T23:59:59.000Z

218

FAQS Job Task Analyses - Fire Protection Engineering  

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

Job Task Analysis and Competency Review Job Task Analysis and Competency Review for All Level Competencies Fire Protection Engineering FAQS Initially conducted (expert competencies): August 2010 Updated (includes ALL Competencies): April 2011 Updated (includes ALL Competencies): October 2012 STEP 1: Job Task Analysis for Tasks Task (and Number) Source Importance Frequency Serve as the subject matter expert in the area of fire protection, life safety, and fire department emergency related services. FAQS Duties and Responsibilities Paragraph A 5 4 Review fire hazard analyses, assessments, and other fire safety documentation for compliance with applicable requirements. FAQS Duties and Responsibilities Paragraph B 5 3 Evaluate the adequacy of site emergency services. This includes all facets of the fire

219

Evolutionary analyses of nonfamily genes in plants  

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

73 73 © 2012 The Authors. The Plant Journal © 2012 Blackwell Publishing Ltd Received Date : 11-May-2012 Revised Date : 16-Oct-2012 Accepted Date : 07-Nov-2012 Article type : Original Article Evolutionary analyses of non-family genes in plants Chu-Yu Ye 1,2,3,4 , Ting Li 1,3,4 , Hengfu Yin 1 , David J. Weston 1 , Gerald A. Tuskan 1,2 , Timothy J. Tschaplinski 1,2 , Xiaohan Yang 1,2,* 1 Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA 2 BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA 3 Present addresses: Beijing Forestry University, Beijing 100083, China (C.-Y.Y.); Pioneer Hi- Bred International, Johnston, IA 50131, USA (T.L.) 4 These authors contributed equally to this work. * Corresponding author:

220

TRACE ELEMENT ANALYSES OF URANIUM MATERIALS  

SciTech Connect

The Savannah River National Laboratory (SRNL) has developed an analytical method to measure many trace elements in a variety of uranium materials at the high part-per-billion (ppb) to low part-per-million (ppm) levels using matrix removal and analysis by quadrapole ICP-MS. Over 35 elements were measured in uranium oxides, acetate, ore and metal. Replicate analyses of samples did provide precise results however none of the materials was certified for trace element content thus no measure of the accuracy could be made. The DOE New Brunswick Laboratory (NBL) does provide a Certified Reference Material (CRM) that has provisional values for a series of trace elements. The NBL CRM were purchased and analyzed to determine the accuracy of the method for the analysis of trace elements in uranium oxide. These results are presented and discussed in the following paper.

Beals, D; Charles Shick, C

2008-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Laser Wakefield diagnostic using holographic longitudinal interferometry  

DOE Green Energy (OSTI)

We propose a diagnostic technique for wakefield measurement in plasma channels. A new technique for plasma channel creation, the Ignitor Heater scheme was proposed and experimentally tested in hydrogen and nitrogen previously. It makes use of two laser pulses. The Ignitor, an ultrashort (sub 100 fs) laser pulse, is brought to a line focus using a cylindrical lens to ionize the gas. The Heater pulse (160 ps long) is used to heat the existing spark via in-verse Bremsstrahlung. The hydrodynamic shock expansion creates a partially evacuated plasma channel with a density minimum on axis. Such a channel has properties of an optical waveguide. This technique allows creation of plasma channels in low atomic number gases, such as hydrogen, which is of importance for guiding of highly intense laser pulses. Laser pulses injected into such plasma channels produce a plasma wake that has a phase velocity close to the speed of light. A discussion of plasma wake measurements, using a Longitudinal Interferometry Wakefield Diagnostic Based on Time Domain Rayleigh Refractometry with Holographic Inversion, will be presented.

Volfbeyn, P.; Esarey, E.; Leemans, W.P.

1999-03-26T23:59:59.000Z

222

Diagnostics Beamline for the SRF Gun Project  

Science Conference Proceedings (OSTI)

A superconducting radio-frequency photo electron injector (SRF gun) is currently under construction by a collaboration of BESSY, DESY, FZR and MBI. The project aims at the design and setup of a CW SRF gun including a diagnostics beamline for the ELBE FEL and to address R&D issues on low emittance injectors for future light sources such as the BESSY FEL. Of critical importance for the injector performance is the control of the electron beam parameters. For this reason a compact diagnostics beamline is under development serving a multitude of operation settings ranging from low-charge (77pC), low-emittance (1 mm mrad) mode to high-charge (2.5nC) operation of the gun. For these operation modes beam dynamics simulations are resulting in boundary conditions for the beam instrumentation. Proven and mature technology is projected wherever possible, for example for current and beam position monitoring. The layout of the beam profile and emittance measurement systems is described. For the bunch length, which varies between 5 ps and 50 ps, two schemes using electro-optical sampling and Cherenkov radiation are detailed. The beam energy and energy spread is measured with a 180-degree spectrometer.

T. Kamps; V. Durr; K. Goldammer; D. Kramer; P. Kuske; J. Kuszynski; D. Lipka; F. Marhauser; T. Quast; D. Richter; U. Lehnert; P. Michel; J. Teichert; P. Evtushenko; I. Will

2005-08-22T23:59:59.000Z

223

Diagnostics on the COBRA pulsed power generator  

Science Conference Proceedings (OSTI)

The COBRA pulsed power generator has a variable current pulse wave form and amplitude (95-180 ns rise time, up to 1 MA peak current). It was designed to study wire array Z pinches and X pinches, including plasma formation, pinch implosion dynamics, and pinch plasma parameters as a function of current rise time. These loads have been studied using an extensive set of diagnostics with spatial and/or temporal resolution. The set of electrical diagnostics on the COBRA generator includes Rogowski coils to monitor the total load current and the current through individual return current posts, and there is also an inductive voltage monitor. A set of extreme ultraviolet and x-ray detectors is used to study the load radiation. Wire array and X pinch plasma formation and dynamics are studied using two-frame, point projection X-pinch x-ray imaging as well as with multiframe laser probing. Flat potassium acid phtalate crystal (KAP), convex, extreme luminosity imaging conical spectrograph, and focusing spectrograph with spatial resolution with mica crystal, pinhole cameras, and a camera with a slit and a step filter set (slip step-wedge camera) can be used in each pulse to monitor the x-ray emission from the X pinch(es) and arrays in several spectral bands.

Shelkovenko, T. A.; Chalenski, D. A.; Chandler, K. M.; Douglass, J. D.; Greenly, J. B.; Hammer, D. A.; Kusse, B. R.; McBride, R. D.; Pikuz, S. A. [Laboratory of Plasma Studies, Cornell University, Rhodes Hall, Ithaca, New York 14853 (United States)

2006-10-15T23:59:59.000Z

224

Building Diagnostic Market Deployment - Final Report  

Science Conference Proceedings (OSTI)

Operational faults are pervasive across the commercial buildings sector, wasting energy and increasing energy costs by up to about 30% (Mills 2009, Liu et al. 2003, Claridge et al. 2000, Katipamula and Brambley 2008, and Brambley and Katipamula 2009). Automated fault detection and diagnostic (AFDD) tools provide capabilities essential for detecting and correcting these problems and eliminating the associated energy waste and costs. The U.S. Department of Energy's (DOE) Building Technology Program (BTP) has previously invested in developing and testing of such diagnostic tools for whole-building (and major system) energy use, air handlers, chillers, cooling towers, chilled-water distribution systems, and boilers. These diagnostic processes can be used to make the commercial buildings more energy efficient. The work described in this report was done as part of a Cooperative Research and Development Agreement (CRADA) between the U.S. Department of Energy's Pacific Northwest National Laboratory (PNNL) and KGS Building LLC (KGS). PNNL and KGS both believe that the widespread adoption of AFDD tools will result in significant reduction to energy and peak energy consumption. The report provides an introduction and summary of the various tasks performed under the CRADA. The CRADA project had three major focus areas: (1) Technical Assistance for Whole Building Energy Diagnostician (WBE) Commercialization, (2) Market Transfer of the Outdoor Air/Economizer Diagnostician (OAE), and (3) Development and Deployment of Automated Diagnostics to Improve Large Commercial Building Operations. PNNL has previously developed two diagnostic tools: (1) whole building energy (WBE) diagnostician and (2) outdoor air/economizer (OAE) diagnostician. WBE diagnostician is currently licensed non-exclusively to one company. As part of this CRADA, PNNL developed implementation documentation and provided technical support to KGS to implement the tool into their software suite, Clockworks. PNNL also provided validation data sets and the WBE software tool to validate the KGS implementation. OAE diagnostician automatically detects and diagnoses problems with outdoor air ventilation and economizer operation for air handling units (AHUs) in commercial buildings using data available from building automation systems (BASs). As part of this CRADA, PNNL developed implementation documentation and provided technical support to KGS to implement the tool into their software suite. PNNL also provided validation data sets and the OAE software tool to validate the KGS implementation. Finally, as part of this CRADA project, PNNL developed new processes to automate parts of the re-tuning process and transfer those process to KGS for integration into their software product. The transfer of DOE-funded technologies will transform the commercial buildings sector by making buildings more energy efficient and also reducing the carbon footprint from the buildings. As part of the CRADA with PNNL, KGS implemented the whole building energy diagnostician, a portion of outdoor air economizer diagnostician and a number of measures that automate the identification of re-tuning measures.

Katipamula, S.; Gayeski, N.

2012-04-30T23:59:59.000Z

225

Godiva and Juliet Diagnostics CED-1 (IER-176)  

SciTech Connect

A suite of diagnostics are being proposed for use in the Juliet experiment (IER-128). In order to calibrate and test the diagnostics prior to use, the LLNL calibration facility and Godiva pulsed reactor will be used to provide intense sources of neutrons and gammas. Due to the similarities of the Godiva and Juliet radiation fields, the diagnostics being developed and tested for Juliet can also play an on-going role in diagnostics for Godiva as well as, perhaps, other critical assembly experiments. Similar work is also being conducted for IER-147 for the purpose of characterizing the Godiva radiation field in support of an upcoming international nuclear accident dosimetry exercise. Diagnostics developed and fielded under IER-147 can provide valuable data with respect to the neutron and gamma energy spectrums in the vicinity of Godiva which is relevant to the calibration of Juliet diagnostics.

Scorby, J C

2011-12-21T23:59:59.000Z

226

Fudge: a high-bandwidth fusion diagnostic of the NIF  

SciTech Connect

Diagnostics for the National Ignition Facility (NIF)/Inertial Confinement Fusion (ICF) program must include good characterization of the fusion source. Ideally, diagnostics would measure the spatially-resolved history of the fusion reaction rate and temperature. Existing diagnostics can satisfy this goal only partially. One class of new techniques that could play a major role in high-yield diagnostics is measurements based on fusion {gamma} rays. The Fusion Diagnostic Gamma Experiment (FUDGE) can be used to perform energy-resolved measurements of (D,T) fusion reaction rates This diagnostic is based on the 16 7-MeV {gamma} rays that are produced by (D,T) fusion. The {gamma} rays are free of spectral dispersion and can be detected with a high bandwidth Cherenkov detector. A simple magnetic monochromator selects signals from the 16 7-MeV {gamma} rays and reduces background signals from non-fusion {gamma} rays.

Moran, M. J., LLNL

1998-06-02T23:59:59.000Z

227

Photon Beamlines and Diagnostics at LCLS  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source (LCLS) is the first hard-x-ray free electron laser in operation. The turn-on of LCLS was rapid and operation has been reliable. Performance has exceeded the design parameters in several areas. The photon energy output covers a range from 480 eV to over 9 keV; the pulse energy is typically 2-3 mJ, with a maximum of 4 mJ at 2 keV. Electron pulse lengths can be varied from 500 fs to shorter than 10 fs. A low-charge option at 20 pC is being explored, which delivers pulses shorter than 10 fs with a reduced pulse energy, typically around 0.2 mJ. On-demand, single-shot and multi-shot modes up to 60 Hz (planned is 120 Hz) can be made available. The photon diagnostics built for LCLS have been commissioned and provide measurements of various properties of the FEL beam, such as pulse energy, beam size and position, wavelength, and allows for intensity attenuation over the entire wavelength range. The two soft x-ray instruments, the Atomic Molecular and Optics (AMO) and Soft X-ray Material Science (SXR) stations, are fully operational and completed their second user run in mid September 2010. The third user run is scheduled from October to December 2010, and will include the first hard x-ray instrument X-ray Pump-and-Probe (XPP). Three additional hard x-ray stations will follow: CXI (Coherent X-ray Imaging) is planned to start commissioning in December 2010, the XCS (X-ray correlation spectroscopy) instrument will start in June 2011, and the station for Matter in Extreme Conditions (MEC) in 2012. A list of past and future milestones for LCLS commission and operations is shown in table 1. The LCLS hard x-ray Free Electron Laser at SLAC reported first lasing in April of 2009. Since then two successful user runs have been completed at the two soft x-ray stations. The first hard x-ray station has started commissioning in July of 2010. Beam diagnostics play an essential role for tuning the machine and delivering the requested beam properties to the users. An overview of the LCLS photon diagnostics will be presented including some selected commissioning results. Plans for future improvements and upgrades will be briefly discussed.

Moeller, Stefan

2011-02-07T23:59:59.000Z

228

Application of Optical Diagnostics for Fuel Spray Characterization  

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

Optical Diagnostics for Fuel Spray Characterization Scott Parrish General Motors Global Research, 30500 Mound Road, Warren, MI 48090-9055 USA It is well known that fuel spray...

229

Developing in situ Diagnostic Tools for UHTC Materials in Extreme ...  

Science Conference Proceedings (OSTI)

In this presentation we will discuss the role of optical diagnostics in characterizing these challenging test environments, as well as their ability to provide in situ ...

230

Fiberoptics-Based Instrumentation for Storage Ring Beam Diagnostics  

E-Print Network (OSTI)

FIBEROPTICS-BASED INSTRUMENTATION FOR STORAGE RING BEAMbeam diagnostic instrumentation that measures longitudinalet al. , “Fiberoptics-based Instrumentation for Storage Ring

Byrd, John M.; De Santis, Stefano; Yin, Yan

2008-01-01T23:59:59.000Z

231

Radioisotopes for Medical Diagnostics and Cancer Therapy at BNL...  

Office of Science (SC) Website

Radioisotopes for Medical Diagnostics and Cancer Therapy at BNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications...

232

PRECLOSURE CONSEQUENCE ANALYSES FOR LICENSE APPLICATION  

Science Conference Proceedings (OSTI)

Radiological consequence analyses are performed for potential releases from normal operations in surface and subsurface facilities and from Category 1 and Category 2 event sequences during the preclosure period. Surface releases from normal repository operations are primarily from radionuclides released from opening a transportation cask during dry transfer operations of spent nuclear fuel (SNF) in Dry Transfer Facility 1 (DTF 1), Dry Transfer Facility 2 (DTF 2), the Canister Handling facility (CHF), or the Fuel Handling Facility (FHF). Subsurface releases from normal repository operations are from resuspension of waste package surface contamination and neutron activation of ventilated air and silica dust from host rock in the emplacement drifts. The purpose of this calculation is to demonstrate that the preclosure performance objectives, specified in 10 CFR 63.111(a) and 10 CFR 63.111(b), have been met for the proposed design and operations in the geologic repository operations area. Preclosure performance objectives are discussed in Section 6.2.3 and are summarized in Tables 1 and 2.

S. Tsai

2005-01-12T23:59:59.000Z

233

3D Diagnostic Of Complex Plasma  

SciTech Connect

This paper reports the development of a three-dimensional(3D) dust particle position diagnostic for complex plasmas. A beam produce by Light Emitting Diodes(LEDs) is formed into horizontal sheet, for the illumination of the particles. The light sheet has a vertical colour gradient across its width, from two opposing colours. The light scattered from the particles is imaged with the camera from above. The horizontal coordinates are measured from the positions on the image. The third coordinate is determined from the colour which represents a position on the gradient of the light sheet. The use of LEDs as a light source reduces a variation in Mie scattered intensity from the particles due to the particle size distribution. The variation would induce a large vertical positional error.

Hall, Edward; Samsonov, Dmitry [Department of Electrical Engineering and Electronics, University of Liverpool, L69 3BX (United Kingdom)

2011-11-29T23:59:59.000Z

234

RHIC electron lens test bench diagnostics  

SciTech Connect

An Electron Lens (E-Lens) system will be installed in RHIC to increase luminosity by counteracting the head-on beam-beam interaction. The proton beam collisions at the RHIC experimental locations will introduce a tune spread due to a difference of tune shifts between small and large amplitude particles. A low energy electron beam will be used to improve luminosity and lifetime of the colliding beams by reducing the betatron tune shift and spread. In preparation for the Electron Lens installation next year, a test bench facility will be used to gain experience with many sub-systems. This paper will discuss the diagnostics related to measuring the electron beam parameters.

Gassner, D.; Beebe, E.; Fischer, W.; Gu, X.; Hamdi, K.; Hock, J.; Liu, C.; Miller, T.; Pikin, A.; Thieberger, P.

2011-05-16T23:59:59.000Z

235

Probabilistic Predictions of Precipitation Using the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

The forecast skill of the European Centre for Medium-Range Weather Forecasts Ensemble Prediction System (EPS) in predicting precipitation probabilities is discussed. Four seasons are analyzed in detail using signal detection theory and ...

R. Buizza; A. Hollingsworth; F. Lalaurette; A. Ghelli

1999-04-01T23:59:59.000Z

236

El Paso Electric photovoltaic-system analyses  

DOE Green Energy (OSTI)

Four analyses were performed on the Newman Power Station PV system. Two were performed using the Photovoltaic Transient Analysis Program (PV-TAP) and two with the SOLCEL II code. The first was to determine the optimum tilt angle for the array and the sensitivity of the annual energy production to variation in tilt angle. The optimum tilt angle was found to be 28/sup 0/, and variations of 2/sup 0/ produce losses of only 0.06% in the annual energy production. The second analysis assesses the power loss due to cell-to-cell variations in short circuit current and the degree of improvement attainable by sorting cells and matching modules. Typical distributions on short circuit current can cause losses of about 9.5 to 11 percent in peak array power, and sorting cells into 4 bins prior to module assembly can reduce the losses to about 6 to 8 percent. Using modules from the same cell bins in building series strings can reduce the losses to about 4.5 to 6 percent. Results are nearly the same if the array is operated at a fixed votage. The third study quantifies the magnitude and frequency of occurrence of high cell temperatures due to reverse bias caused by shadowing, and it demonstrates that cell temperatures achieved in reverse bias are higher for cells with larger shunt resistance. The last study assesses the adequacy of transient protection devices on the dc power lines to transients produced by array switching and lightning. Large surge capacitors on the dc power line effectively limit voltage excursions at the array and at the control room due to lightning. Without insertion of series resistors, the current may be limited only by cable and switch impedances, and all elements could be severely stressed. (LEW)

Not Available

1982-05-01T23:59:59.000Z

237

Combustion Turbine Diagnostic Health Monitoring: Combustion Turbine Performance and Fault Diagnostic Module (CTPFDM)  

Science Conference Proceedings (OSTI)

The industry-wide transition to condition-based maintenance strategies has prompted development of sophisticated, automated condition assessment tools. The Combustion Turbine Performance and Fault Diagnostic Module (CTPFDM) presented in this report is the second of a suite of intelligent software tools being developed by EPRI and the U.S. Department of Energy (DOE) National Energy Technology Laboratory as part of the Combustion Turbine Health Management (CTHM) System. The CTHM System will offer a signifi...

2004-03-17T23:59:59.000Z

238

Combustion Turbine Diagnostic Health Monitoring: Combined Cycle Performance and Fault Diagnostic Module (CCPFDM)  

Science Conference Proceedings (OSTI)

The industry-wide transition to condition-based maintenance strategies has prompted development of sophisticated, automated condition assessment tools. The Combined Cycle Performance and Fault Diagnostic Module (CCPFDM) presented in this report is the third of a suite of intelligent software tools being developed by EPRI and the U.S. Department of Energy (DOE) National Energy Technology Laboratory as part of the Combustion Turbine Health Management (CTHM) System. The CTHM System will offer a significant ...

2004-03-22T23:59:59.000Z

239

Development of nuclear diagnostics for the National Ignition Facility ,,invited...  

E-Print Network (OSTI)

July 2006; published online 5 October 2006 The National Ignition Facility NIF will provide up to 1.8 MJ of laser energy for imploding inertial confinement fusion ICF targets. Ignited NIF targets are expected of nuclear diagnostics in ICF experiments. In 2005, the suite of nuclear-ignition diagnostics for the NIF

240

Target Diagnostic Control System Implementation for the National Ignition Facility  

Science Conference Proceedings (OSTI)

The extreme physics of targets shocked by NIF's 192-beam laser are observed by a diverse suite of diagnostics. Many diagnostics are being developed by collaborators at other sites, but ad hoc controls could lead to unreliable and costly operations. A Diagnostic Control System (DCS) framework for both hardware and software facilitates development and eases integration. Each complex diagnostic typically uses an ensemble of electronic instruments attached to sensors, digitizers, cameras, and other devices. In the DCS architecture each instrument is interfaced to a low-cost Windows XP processor and Java application. Each instrument is aggregated with others as needed in the supervisory system to form an integrated diagnostic. The Java framework provides data management, control services and operator GUI generation. DCS instruments are reusable by replication with reconfiguration for specific diagnostics in XML. Advantages include minimal application code, easy testing, and high reliability. Collaborators save costs by assembling diagnostics with existing DCS instruments. This talk discusses target diagnostic instrumentation used on NIF and presents the DCS architecture and framework.

Shelton, R T; Kamperschroer, J H; Lagin, L J; Nelson, J R; O'Brien, D W

2010-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Integrating reliability analysis and diagnostics for complex technical systems  

E-Print Network (OSTI)

ignored or repeated by engineers creating diagnostics. The current paper explains the basic concepts (with the consequence that a device would be powered when it should not be). 3. Failure. For a complexIntegrating reliability analysis and diagnostics for complex technical systems N A Snooke and C J

Snooke, Neal

242

Development of heavy ion beam probe diagnostics (abstract)  

Science Conference Proceedings (OSTI)

The results of the activity of Kharkov and Moscow joint HIBP group during recent years are presented in this report. The mathematical aspects of the diagnostics are discussed more specifically. The HIBP diagnostics need the preliminary trajectory calculations to find the probing pattern

A. V. Melnikov

1995-01-01T23:59:59.000Z

243

Note: Statistical errors estimation for Thomson scattering diagnostics  

SciTech Connect

A practical way of estimating statistical errors of a Thomson scattering diagnostic measuring plasma electron temperature and density is described. Analytically derived expressions are successfully tested with Monte Carlo simulations and implemented in an automatic data processing code of the JET LIDAR diagnostic.

Maslov, M.; Beurskens, M. N. A.; Flanagan, J.; Kempenaars, M. [EURATOM-CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Collaboration: JET-EFDA Contributors

2012-09-15T23:59:59.000Z

244

Genome-Facilitated Analyses of Geomicrobial Processes  

SciTech Connect

This project had the goal(s) of understanding the mechanism(s) of extracellular electron transport (EET) in the microbe Shewanella oneidensis MR-1, and a number of other strains and species in the genus Shewanella. The major accomplishments included sequencing, annotation, and analysis of more than 20 Shewanella genomes. The comparative genomics enabled the beginning of a systems biology approach to this genus. Another major contribution involved the study of gene regulation, primarily in the model organism, MR-1. As part of this work, we took advantage of special facilities at the DOE: e.g., the synchrotron radiation facility at ANL, where we successfully used this system for elemental characterization of single cells in different metabolic states (1). We began work with purified enzymes, and identification of partially purified enzymes, leading to initial characterization of several of the 42 c-type cytochromes from MR-1 (2). As the genome became annotated, we began experiments on transcriptome analysis under different conditions of growth, the first step towards systems biology (3,4). Conductive appendages of Shewanella, called bacterial nanowires were identified and characterized during this work (5, 11, 20,21). For the first time, it was possible to measure the electron transfer rate between single cells and a solid substrate (20), a rate that has been confirmed by several other laboratories. We also showed that MR-1 cells preferentially attach to cells at a given charge, and are not attracted, or even repelled by other charges. The interaction with the charged surfaces begins with a stimulation of motility (called electrokinesis), and eventually leads to attachment and growth. One of the things that genomics allows is the comparative analysis of the various Shewanella strains, which led to several important insights. First, while the genomes predicted that none of the strains looked like they should be able to degrade N-acetyl glucosamine (NAG), the monomer that makes up chitin, virtually all of the strains were in fact capable. This led to the discovery of a great many new genes involved with chitin and NAG metabolism (7). In a similar vein, a detailed study of the sugar utilization pathway revealed a major new insight into the regulation of sugar metabolism in this genus (19). Systems Biology and Comparative Genomics of the shewanellae: Several publications were put together describing the use of comparative genomics for analyses of the group Shewanella, and these were a logical culmination of our genomic-driven research (10,15,18). Eight graduate students received their Ph.D. degrees doing part of the work described here, and four postdoctoral fellows were supported. In addition, approximately 20 undergraduates took part in projects during the grant period.

Kenneth H. Nealson

2012-05-02T23:59:59.000Z

245

Clean Energy Policy Analyses: Analysis of the Status and Impact...  

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

Clean Energy Policy Analyses: Analysis of the Status and Impact of Clean Energy Policies at the Local Level Clean Energy Policy Analyses: Analysis of the Status and Impact of Clean...

246

ChemCam laser first analyses yield beautiful results  

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

laser first analyses ChemCam laser first analyses yield beautiful results The laser instrument has fired nearly 500 shots so far that have produced strong, clear data about the...

247

mather-99.PDF  

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

Cloud Properties Derived from the Manus Micropulse Lidar with ECMWF Analyses J. H. Mather and T. P. Ackerman Department of Meteorology The Pennsylvania State University University...

248

Ultrasensitive microanalytical diagnostic methods for rickettsial pathogens  

SciTech Connect

A strategic CRADA was established between Sandia National Laboratories (SNL) and the University of Texas Medical Branch (UTMB) at Galveston to address pressing needs for US protection against biological weapons of mass destruction (WMD) and emerging infectious diseases. The combination of unique expertise and facilities at UTMB and SNL enabled interdisciplinary research efforts in the development of rapid and accurate diagnostic methods for early detection of trace priority pathogen levels. Outstanding postdoctoral students were also trained at both institutions to help enable the next generation of scientists to tackle the challenging interdisciplinary problems in the area of biodefense and emerging infectious diseases. Novel approaches to diagnostics were developed and the both the speed of assays as well as the detection sensitivity were improved by over an order of magnitude compared to traditional methods. This is a significant step toward more timely and specific detection of dangerous infections. We developed in situ polymerized porous polymer monoliths that can be used as (1) size exclusion elements for capture and processing of rickettsial infected cells from a sample, (2) photopatternable framework for grafting high densities of functionalized antibodies/fluorescent particles using novel monolith chemistry. Grafting affinity reagents specific to rickettsial particles enables rapid, ultra-sensitive assays by overcoming transport limitations of traditional planar assay approaches. We have selectively trapped particles and bacteria at the cell trap and have also detected picomolar mouse IL-6 captured with only 20 minutes total incubation times using the densely patterned monolith framework. As predicted, the monolith exhibits >10x improvements in both capture speed and capture density compared to traditional planar approaches. The most significant advancements as part of this CRADA is the optimization of techniques allowing the detection of <10 rickettsial cells in a whole blood sample. This detection limit is over 2 orders of magnitude more sensitive that previously reported methods and overcomes a key hurdle in ability to sense dangerous infections before they are too late to treat and contain. We also showed that in the new format, cross-reactivity with interfering species is reduced thereby increasing the specificity of such tests. Promising options to treat whole blood and avoid clogging and non-specific fouling of sensors were also developed.

Hatch, A. V.

2012-03-01T23:59:59.000Z

249

Range of Neutronic Parameters for Repository Criticality Analyses  

SciTech Connect

The ''Range of Neutronic Parameters for Repository Criticality Analyses'' technical report contains a summary of the benchmark criticality analyses (including the laboratory critical experiment [LCEs] and the commercial reactor criticals [CRCs]) used to support the validation of the criticality evaluation methods. This report also documents the development of the Critical Limits (CLs) for the repository criticality analyses.

W.J. Anderson

1999-09-28T23:59:59.000Z

250

Cytogenomic Analyses of the genus Sorghum  

E-Print Network (OSTI)

A phylogenetic tree based on ITS1, Adh1 and ndhF grouped the species of the genus Sorghum into one distinct monophyletic group, but including two sister lineages, one with x=5, the other with x=10 as basic chromosome numbers. The goal of this study was to elucidate major patterns in Sorghum genome evolution, particularly n=5 vs. n=10 genomes. A very recent molecular cytogenetic study in our laboratory revealed striking structural karyotypic rearrangements between S. bicolor (x=10) and an x=5 Sorghum species, S. angustum; so an immediate objective here was to determine if identical or similar rearrangements exist in other wild Sorghum species. Our approach was [1] to extend similar methods to additional species, i.e., fluorescent in situ hybridization (FISH) analyses of sorghum genomic bacterial artificial chromosome clones and multi-BAC cocktail probes to mitotic chromosomes of S. angustum, S. versicolor, S. brachypodum and S. intrans; and [2] to augment the BAC-FISH findings by comparing telomeric and ribosomal DNA FISH signal distributions to x=5 and x=10 Sorghum species. Signals from in situ hybridizations of BAC-based probes were insufficiently robust and insufficiently localized to delineate FISH signal patterns akin to those discovered previously in S. angustum. Southern blots of the same BACs to restricted DNA of these species revealed relatively moderate affinity to smeared DNA, suggesting homology to non-tandemized sequences. FISH of the A-type TRS (Arabidopsis-like telomeric repeat sequence) revealed its presence is limited to terminal chromosomal regions of the Sorghum species tested, except S. brachypodum, which displayed intercalary signal on one chromosome and no detachable signal at its termini region. The hybridization of 45S and 5S rDNA revealed that the respective sites of tandemized clusters differ among species in terms of size, number and location, except S. angustum versus S. versicolor. Well localized BAC-FISH signals normally occur when signals from low-copy sequences discernibly exceed background signal, including those from hybridization of dispersed repetitive elements. The low level of signal intensity from BAC low-copy sequences relative to the background signal "noise" seems most likely due to low homology and(or) technical constraints. Extensive dispersal of low-copy sequences that are syntenic in S. bicolor seems unlikely, but possible. In conclusion, the result was a lack of clear experimental success with BAC-FISH and an inability to effectively screen for S. angustum-like rearrangements using BAC-FISH. The telomeric and rDNA FISH indicated that the x=5 genomes vary extensively. One can surmise that although the arrangements seen in S. angustum might extend to S. versicolor, they certainly do not extend to S. versicolor, they certainly do not extend to S. intrans or S. brachypodum. It is clear that S. brachypodum has telomeric repeats that are either very short or rely on some sequence other than the A-type TRS.

Anderson, Jason C.

2010-05-01T23:59:59.000Z

251

Lansce Wire Scanning Diagnostics Device Mechanical Design  

SciTech Connect

The Accelerator Operations & Technology Division at Los Alamos National Laboratory operates a linear particle accelerator which utilizes 110 wire scanning diagnostics devices to gain position and intensity information of the proton beam. In the upcoming LANSCE improvements, 51 of these wire scanners are to be replaced with a new design, up-to-date technology and off-the-shelf components. This document outlines the requirements for the mechanical design of the LANSCE wire scanner and presents the recently developed linac wire scanner prototype. Additionally, this document presents the design modifications that have been implemented into the fabrication and assembly of this first linac wire scanner prototype. Also, this document will present the design for the second, third, and fourth wire scanner prototypes being developed. Prototypes 2 and 3 belong to a different section of the particle accelerator and therefore have slightly different design specifications. Prototype 4 is a modification of a previously used wire scanner in our facility. Lastly, the paper concludes with a plan for future work on the wire scanner development.

Rodriguez Esparza, Sergio [Los Alamos National Laboratory; Batygin, Yuri K. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Gruchalla, Michael E. [Los Alamos National Laboratory; Maestas, Alfred J. [Los Alamos National Laboratory; Pillai, Chandra [Los Alamos National Laboratory; Raybun, Joseph L. [Los Alamos National Laboratory; Sattler, F. D. [Los Alamos National Laboratory; Sedillo, James Daniel [Los Alamos National Laboratory; Smith, Brian G. [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

252

NSLS-II INJECTION STRAIGHT DIAGNOSTICS  

Science Conference Proceedings (OSTI)

The ultra-bright light source being developed by the NSLS-II project will utilize top-up injection and fine tuning of the injection process is mandatory. In this paper we present the diagnostics installed in the injection straight. Its use for commissioning and tuning of the injection cycle is also described. The NSLS-II storage ring will utilize a 9.3 meter long injection straight section shown in Fig. 1. Injection will be preformed with two septa (one pulsed, one DC) and four kickers. The stored beam will be shifted towards the pulsed septum up to IS mm and the nominal distance between centers of the injected and the bumped beam is 9.5mm. The NSLS-II beam position monitors will have turn-by-turn and first-turn capabilities and will be used for the commissioning and tuning the injection process. However, there are three additional BPMs and two beam intercepting OTR screens (flags) installed in the injection straight.

Pinayev, I.; Blednykh, A.; Ferreira, M.; Fliller, R.; Kosciuk, B.; Shaftan, T.V.; Wang, G.

2011-03-28T23:59:59.000Z

253

Lifecycle Assessments and Sustainability Analyses | Open Energy Information  

Open Energy Info (EERE)

Lifecycle Assessments and Sustainability Analyses Lifecycle Assessments and Sustainability Analyses Jump to: navigation, search The National Renewable Energy Laboratory performs lifecycle and technoeconomic analyses to promote sustainable energy development. Conducting full life-cycle assessments for biomass products, including electricity, biodiesel, and ethanol, is important for determining environmental benefits. NREL analysts use a life-cycle inventory modeling package and supporting databases to conduct life-cycle assessments. These tools can be applied on a global, regional, local, or project basis. Integrated system analyses, technoeconomic analyses, life-cycle assessments (LCAs), and other analysis tools are essential to our research and development efforts. They provide an understanding of the economic,

254

Diagnostics for the DIII-D radiative divertor  

SciTech Connect

This paper reviews the design of new diagnostics and the modifications to existing diagnostics needed to carry out radiative divertor experiments in DIII-D following installation in late 1996 of a set of baffle structures that will restrict the backflow to the core plasma of neutral deuterium atoms and impurity gases. The divertor slots formed by the new baffle structures will inhibit the easy view of the divertor legs and target plates that the open divertor geometry in DIII-D currently affords. We review a basic set of diagnostics that are needed to demonstrate the reduction of divertor heat loading and radiative dissipation of energy within the divertor. This will include IR cameras, bolometry, foil bolometers, and Langmuir probes. Within the limits of available funding, we will implement a supplemental set of instruments which provide a more detailed understanding of the underlying physical processes. Many existing diagnostics require only re-aiming to provide proper coverage of the initial 23 cm long divertor plasma configuration (X- point to floor distance). Other diagnostics need extensive reconfiguration using in-vessel fiber-optic bundles or high power laser mirrors. The new divertor baffle panels provide a protective shelf for diagnostic hardware mounted underneath them, but the water cooling channels in the panels limit the permissible size of through holes and, thereby, restrict the available views of under-the- baffle diagnostics. The successful resolution of the design and implementation of these diagnostic modifications is dependent on a strong coordination between GA and its many diagnostic collaborators.

Nilson, D.G. [Lawrence Livermore National Lab., CA (United States); Brooks, N.H.; Smith, J.P.; Snider, R.T.

1995-10-01T23:59:59.000Z

255

Development plan for an advanced drilling system with real-time diagnostics (Diagnostics-While-Drilling)  

Science Conference Proceedings (OSTI)

This proposal provides the rationale for an advanced system called Diagnostics-while-drilling (DWD) and describes its benefits, preliminary configuration, and essential characteristics. The central concept is a closed data circuit in which downhole sensors collect information and send it to the surface via a high-speed data link, where it is combined with surface measurements and processed through drilling advisory software. The driller then uses this information to adjust the drilling process, sending control signals back downhole with real-time knowledge of their effects on performance. The report presents background of related previous work, and defines a Program Plan for US Department of Energy (DOE), university, and industry cooperation.

FINGER,JOHN T.; MANSURE,ARTHUR J.; PRAIRIE,MICHAEL R.; GLOWKA,D.A.

2000-02-01T23:59:59.000Z

256

A Proposal for an Advanced Drilling System with Real-Time Diagnostics (Diagnostics-While-Drilling)  

DOE Green Energy (OSTI)

In this paper, we summarize the rationale for an advanced system called Diagnostics-While-Drilling (DWD) and describe its benefits, preliminary configuration, and essential characteristics. The central concept is a closed data circuit in which downhole sensors collect information and send it to the surface via a high-speed data link, where it is combined with surface measurements and processed through drilling advisory software. The driller then uses this information to adjust the drilling process, sending control signals back downhole with real-time knowledge of their effects on performance. We outline a Program Plan for DOE, university, and industry to cooperate in the development of DWD technology.

Finger, J.T.; Mansure, A.J.; Prairie, M.R.

1999-07-12T23:59:59.000Z

257

A Magnetic Diagnostic Code for 3D Fusion Equilibria  

SciTech Connect

A synthetic magnetic diagnostics code for fusion equilibria is presented. This code calculates the response of various magnetic diagnostics to the equilibria produced by the VMEC and PIES codes. This allows for treatment of equilibria with both good nested flux surfaces and those with stochastic regions. DIAGNO v2.0 builds upon previous codes through the implementation of a virtual casing principle. The code is validated against a vacuum shot on the Large Helical Device (LHD) where the vertical field was ramped. As an exercise of the code, the diagnostic response for various equilibria are calculated on the LHD.

Samuel A. Lazerson, S. Sakakibara and Y. Suzuki

2013-03-12T23:59:59.000Z

258

High-Intensity Laser Diagnostics for OMEGA EP  

Science Conference Proceedings (OSTI)

OMEGA EP is a new high-energy petawatt laser system under construction at the University of Rochester’s Laboratory for Laser Energetics. This paper describes our designs for two diagnostics critical to OMEGA EP’s mission. The focal-spot diagnostic (FSD) is responsible for characterizing the focal spot of OMEGA EP’s off-axis parabolic mirror at full energy. The ultrafast temporal diagnostic (UTD) is responsible for characterizing pulse shapes of full-energy target shots ranging in width from petawatt laser at full energy.

Bromage, J.; Zuegel, J.D.; Bahk, S.-W.; Vickery, D.S.; Waxer, L.J.; Irwin, D.; Bagnoud, V.; Boni, R.; Moore, M.D.; Junquist, R.; Stoeckl, C.

2006-07-13T23:59:59.000Z

259

Applications of laser diagnostics in energy conservation research  

Science Conference Proceedings (OSTI)

During the past decade, intensive research and development has demonstrated the feasibility, checked the accuracy, and extended the sensitivity of laser diagnostics for combustion systems. Combinations of diagnostics can now provide in-situ, time-, and space-resolved measurements of temperature, velocity, and species concentration. Although these tools are powerful, they also can be exceedingly difficult to use, and their application remains largely in the hands of specialized instrument developers rather than problem-oriented researchers. This report outlines a variety of applications for existing diagnostics that may interest both instrument developers and researchers in particular fields.

Hutchinson, R.A.

1985-02-01T23:59:59.000Z

260

LASER BASED DIAGNOSTICS FOR MEASURING H- BEAM PARAMETERS  

Science Conference Proceedings (OSTI)

In recent years, a number of laser based H- beam diagnostics systems have been developed in the Spallation Neutron Source (SNS). This talk reviews three types of laser-based diagnostics at SNS: the laser wire profile monitors at superconducting linac (SCL), the laser based transverse emittance measurement system at high energy beam transport (HEBT), and the laser bunch shape monitor at medium energy beam transport (MEBT). Measurement performance will be reported and major technical challenges in the design, implementation, and operation of the laser based diagnostics at accelerator facilities will be addressed.

Liu, Yun [ORNL; Aleksandrov, Alexander V [ORNL; Blokland, Willem [ORNL; Deibele, Craig Edmond [ORNL; Hardin, Robert A [ORNL; Huang, Chunning [ORNL; Long, Cary D [ORNL; Menshov, Alexander A [ORNL; Pogge, James R [ORNL; Webster, Anthony W [ORNL; Zhukov, Alexander P [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Generating analyses for detecting faults in path segments  

Science Conference Proceedings (OSTI)

Although static bug detectors are extensively applied, there is a cost in using them. One challenge is that static analysis often reports a large number of false positives but little diagnostic information. Also, individual bug detectors need to be built ... Keywords: demand-driven, generate analysis, path segment, specification

Wei Le; Mary Lou Soffa

2011-07-01T23:59:59.000Z

262

Integrated Whole Building Energy Diagnostics | Department of Energy  

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

Whole Building Energy Whole Building Energy Diagnostics Integrated Whole Building Energy Diagnostics The U.S. Department of Energy (DOE) is currently conducting research into integrated whole-building energy diagnostics. Energy and operational fault detection and diagnostics (FDD) systems are currently not broadly understood and deployed in buildings. An integrated whole-building energy FDD system that is applicable to the systems in big-box retail stores and supermarkets does not exist at present. Major building subsystems are independently controlled with limited, add-on FDD capability. Neither controls nor FDD systems now available adequately capture the functional and behavioral interactions between subsystems that result in wasted energy and increased false alarm rates.

263

Diagnostic development and support of MHD test facilities  

DOE Green Energy (OSTI)

The Diagnostic Instrumentation and Analysis Laboratory (DIAL) at Mississippi State University (MSU) is developing diagnostic instruments for Magnetohydrodynamics (MHD) power train data acquisition and for support of MHD component development test facilities. Microprocessor-controlled optical instruments, initially developed for Heat Recovery/Seed Recovery support, are being refined, and new systems to measure temperatures and gas-seed-slag stream characteristics are being developed. To further data acquisition and analysis capabilities, the diagnostic systems are being interfaced with DIAL's computers. Technical support for the diagnostic needs of the national MHD research effort is being provided. DIAL personnel will also cooperate with government agencies and private industries to improve the transformation of research and development results into processes, products and services applicable to their needs. 9 figs., 1 tab.

Not Available

1990-01-01T23:59:59.000Z

264

Operation of Target Diagnostics in a Petawatt Laser Environment (invited)  

Science Conference Proceedings (OSTI)

The operation of target diagnostics in a high-energy petawatt laser environment is made challenging by the large number of energetic electrons, hard x rays, and energetic particles produced in laser–target interactions.

Stoeckl, C.; Glebov, V.Yu.; Jaanimagi, P.A.; Knauer, J.P.; Meyerhofer, D.D.; Sangster, T.C.; Storm, M.; Sublett, S.; Theoblad, W.; Key, M.H.; MacKinnon, A.J.; Patel, P.; Neely, D.; Norreys, P.A.

2006-09-28T23:59:59.000Z

265

Computational/Analytical Diagnostic Tools for Electromagnetic Scattering  

Science Conference Proceedings (OSTI)

This paper presents three techniques and the graphics implementations which can be used as diagnostic aides in the design and understanding of scattering structures: Imaging, near fileds, and surface current displays. The imaging analysis is a new bistatic ...

Hom Kam W.; Jr Noel A. Talcott; Shaeffer John F.

1997-03-01T23:59:59.000Z

266

Commissioning and Performance Diagnostics for HVAC Control Systems  

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

Commissioning and Performance Diagnostics for HVAC Control Systems Speaker(s): Ashish Singhal Date: December 20, 2006 - 12:00pm Location: 90-3122 Seminar HostPoint of Contact:...

267

Development of novel diagnostics and therapeutics for amyotrophic lateral sclerosis  

E-Print Network (OSTI)

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease with diagnostics and treatments that are ineffective at stopping the progression. This thesis examines new ways of both diagnosing and treating ALS, including ...

Townsend, Seth A. (Seth Alan)

2008-01-01T23:59:59.000Z

268

An Evaluation of a Diagnostic Wind Model (CALMET)  

Science Conference Proceedings (OSTI)

A U.S. Environmental Protection Agency (EPA)-approved diagnostic wind model [California Meteorological Model (CALMET)] was evaluated during a typical lake-breeze event under fair weather conditions in the Chicago region. The authors focused on ...

Weiguo Wang; William J. Shaw; Timothy E. Seiple; Jeremy P. Rishel; Yulong Xie

2008-06-01T23:59:59.000Z

269

Energy Diagnostics in a 1½-Layer, Nonisopycnic Model  

Science Conference Proceedings (OSTI)

The development of a pointwise (in the horizontal) energy diagnostic scheme applicable to a 1½-layer, nonisopycnic, primitive equation model is presented. The scheme utilizes the concept of available gravitational energy to replace the ...

Lars Petter Røed

1997-07-01T23:59:59.000Z

270

A malaria diagnostic system based on electric impedance spectroscopy  

E-Print Network (OSTI)

Malaria caused by Plasmodium falciparum infection is one of the major threats to world health and especially to the community without proper medical care. New approach to cost-efficient, portable, miniaturized diagnostic ...

Ha, Sungjae

2011-01-01T23:59:59.000Z

271

Tracer Equivalent Latitude: A Diagnostic Tool for Isentropic Transport Studies  

Science Conference Proceedings (OSTI)

Area equivalent latitude based on potential vorticity (PV) is a widely used diagnostic for isentropic transport in the stratosphere and upper troposphere. Here, an alternate method for calculating equivalent latitude is explored, namely, a ...

Douglas R. Allen; Noboru Nakamura

2003-01-01T23:59:59.000Z

272

The Motional Stark Effect diagnostic on Alcator C-Mod  

E-Print Network (OSTI)

A ten channel Motional Stark Effect diagnostic has been installed on Alcator C-Mod to measure the plasma internal magnetic pitch angle profile. The C-Mod MSE measures the local electric field direction by measuring the ...

Yuh, Howard Yung-Hao

2005-01-01T23:59:59.000Z

273

Application of MJO Simulation Diagnostics to Climate Models  

Science Conference Proceedings (OSTI)

The ability of eight climate models to simulate the Madden–Julian oscillation (MJO) is examined using diagnostics developed by the U.S. Climate Variability and Predictability (CLIVAR) MJO Working Group. Although the MJO signal has been extracted ...

D. Kim; K. Sperber; W. Stern; D. Waliser; I.-S. Kang; E. Maloney; W. Wang; K. Weickmann; J. Benedict; M. Khairoutdinov; M.-I. Lee; R. Neale; M. Suarez; K. Thayer-Calder; G. Zhang

2009-12-01T23:59:59.000Z

274

Surface Temperature Gradients as Diagnostic Indicators of Midlatitude Circulation Dynamics  

Science Conference Proceedings (OSTI)

Zonal and meridional surface temperature gradients are considered to be determinants of large-scale atmospheric circulation patterns. However, there has been limited investigation of these gradients as diagnostic aids. Here, the twentieth-century ...

Christina Karamperidou; Francesco Cioffi; Upmanu Lall

2012-06-01T23:59:59.000Z

275

Hydroxyalkyl phosphine compounds for use as diagnostic and therapeutic pharmaceuticals  

DOE Patents (OSTI)

This research discloses a compound and method of making a compound for use as a diagnostic or therapeutic pharmaceutical comprises a functionalized hydroxyalkyl phosphine ligand and a metal combined with the ligand. 16 figs.

Katti, K.V.; Singh, P.R.; Reddy, V.S.; Katti, K.K.; Volkert, W.A.; Ketring, A.R.

1999-03-02T23:59:59.000Z

276

Mach-Zehnder Fiber-Optic Links for ICF Diagnostics  

Science Conference Proceedings (OSTI)

This article describes the operation and evolution of Mach-Zehnder links for single-point detectors in inertial confinement fusion experimental facilities, based on the Gamma Reaction History (GRH) diagnostic at the National Ignition Facility.

Miller, E. K., Hermann, H. W.

2012-11-01T23:59:59.000Z

277

Spontaneous brillouin scattering quench diagnostics for large superconducting magnets  

E-Print Network (OSTI)

Large superconducting magnets used in fusion reactors, as well as other applications, need a diagnostic that can non-invasively measure the temperature and strain throughout the magnet in real-time. A new fiber optic sensor ...

Mahar, Scott B

2008-01-01T23:59:59.000Z

278

Diagnostic development and support of MHD test facilities  

DOE Green Energy (OSTI)

The Diagnostic Instrumentation and Analysis Laboratory (DIAL) at Mississippi State University (MSU) is developing diagnostic instruments for MHD power train data acquisition and for support of MHD component development test facilities. Microprocessor-controlled optical instruments, initially developed for Heat Recovery/Seed Recovery support, are being refined, and new systems to measure temperatures and gas-seed-slag stream characteristics are being developed. To further data acquisition and analysis capabilities, the diagnostic systems are being interfaced with DIAL's computers. Technical support for the diagnostic needs of the national MHD research effort is being provided. DIAL personnel will also cooperate with government agencies and private industries to improve the transformation of research and development results into processes, products and services applicable to their needs. 25 figs., 6 tabs.

Not Available

1990-01-01T23:59:59.000Z

279

Development of the ITER magnetic diagnostic set and specification  

SciTech Connect

ITER magnetic diagnostics are now in their detailed design and R and D phase. They have passed their conceptual design reviews and a working diagnostic specification has been prepared aimed at the ITER project requirements. This paper highlights specific design progress, in particular, for the in-vessel coils, steady state sensors, saddle loops and divertor sensors. Key changes in the measurement specifications, and a working concept of software and electronics are also outlined.

Vayakis, G.; Delhom, D.; Encheva, A.; Giacomin, T.; Jones, L.; Patel, K. M.; Portales, M.; Prieto, D.; Simrock, S.; Snipes, J. A.; Udintsev, V. S.; Watts, C.; Winter, A.; Zabeo, L. [ITER Organization, Route de Vinon, F-13115 St Paul lez Durance (France); Arshad, S.; Perez-Lasala, M.; Sartori, F. [Fusion for Energy, Barcelona (Spain)

2012-10-15T23:59:59.000Z

280

Recent improvements of the JET lithium beam diagnostic  

SciTech Connect

A 60 kV neutral lithium diagnostic beam probes the edge plasma of JET for the measurement of electron density profiles. This paper describes recent enhancements of the diagnostic setup, new procedures for calibration and protection measures for the lithium ion gun during massive gas puffs for disruption mitigation. New light splitting optics allow in parallel beam emission measurements with a new double entrance slit CCD spectrometer (spectrally resolved) and a new interference filter avalanche photodiode camera (fast density and fluctuation studies).

Brix, M.; Morgan, P.; Stamp, M.; Zastrow, K.-D. [EURATOM/CCFE Fusion Association, Culham Science Centre, OX14 3DB Abingdon (United Kingdom); Dodt, D. [Max-Planck-Institut fuer Plasmaphysik, EURATOM-Assoziation, Garching (Germany); Dunai, D.; Meszaros, B.; Petravich, G.; Refy, D. I.; Szabolics, T.; Zoletnik, S. [Wigner RCP, Association EURATOM, Pf. 49, H-1525 Budapest (Hungary); Lupelli, I. [Associazione EURATOM-ENEA - University of Rome 'Tor Vergata', Roma (Italy); Marsen, S. [Max-Planck-Institut fuer Plasmaphysik, EURATOM-Ass., D-17491 Greifswald (Germany); Melson, T. F. [Max-Planck-Institut fuer Astrophysik, Garching (Germany); Silva, C. [EURATOM/IST, Inst. de Plasma e Fusao Nuclear, Inst. Superior Tecnico, Lisboa (Portugal); Collaboration: JET-EFDA Contributors

2012-10-15T23:59:59.000Z

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


281

The Foreseer Tool - Analysing Energy, Land and Water Resource...  

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

The Foreseer Tool - Analysing Energy, Land and Water Resource Futures through Sankey Diagrams Speaker(s): Bojana Bajzelj Grant Kopec Julian Allwood Liz Curmi Date: November 10,...

282

FAQS Job Task Analyses - Safeguards and Security General Technical Base |  

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

Safeguards and Security General Technical Safeguards and Security General Technical Base FAQS Job Task Analyses - Safeguards and Security General Technical Base FAQS Job Task Analyses are performed on the Function Area Qualification Standards. The FAQS Job Task Analyses consists of: Developing a comprehensive list of tasks that define the job such as the duties and responsibilities which include determining their levels of importance and frequency. Identifying and evaluating competencies. Last step is evaluating linkage between job tasks and competencies. FAQS JTA - Safeguards and Security General Technical Base More Documents & Publications FAQS Qualification Card - Safeguards and Security General Technical Base FAQS Qualification Card - Safeguards and Security FAQS Job Task Analyses - Safeguards and Security

283

NETL: Energy Analyses - Cost and Performance Baseline for Fossil...  

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

Energy Analyses Cost and Performance Baselines for Fossil Energy Plants Overview The studies listed on this page establish estimates for the cost and performance of combustion and...

284

Geothermal: Sponsored by OSTI -- Analyses of operational times...  

Office of Scientific and Technical Information (OSTI)

Analyses of operational times and technical aspects of the Salton Sea scientific drilling project: (Final report) Geothermal Technologies Legacy Collection HelpFAQ | Site Map |...

285

Interpretation of chemical analyses of waters collected from...  

Open Energy Info (EERE)

Interpretation of chemical analyses of waters collected from two geothermal wells at Coso, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article:...

286

Chemical analyses and preliminary interpretation of waters collected...  

Open Energy Info (EERE)

Coso, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Chemical analyses and preliminary interpretation of waters collected from the CGEH No. 1...

287

Advanced Drilling through Diagnostics-White-Drilling  

DOE Green Energy (OSTI)

A high-speed data link that would provide dramatically faster communication from downhole instruments to the surface and back again has the potential to revolutionize deep drilling for geothermal resources through Diagnostics-While-Drilling (DWD). Many aspects of the drilling process would significantly improve if downhole and surface data were acquired and processed in real-time at the surface, and used to guide the drilling operation. Such a closed-loop, driller-in-the-loop DWD system, would complete the loop between information and control, and greatly improve the performance of drilling systems. The main focus of this program is to demonstrate the value of real-time data for improving drilling. While high-rate transfer of down-hole data to the surface has been accomplished before, insufficient emphasis has been placed on utilization of the data to tune the drilling process to demonstrate the true merit of the concept. Consequently, there has been a lack of incentive on the part of industry to develop a simple, low-cost, effective high-speed data link. Demonstration of the benefits of DWD based on a high-speed data link will convince the drilling industry and stimulate the flow of private resources into the development of an economical high-speed data link for geothermal drilling applications. Such a downhole communication system would then make possible the development of surface data acquisition and expert systems that would greatly enhance drilling operations. Further, it would foster the development of downhole equipment that could be controlled from the surface to improve hole trajectory and drilling performance. Real-time data that would benefit drilling performance include: bit accelerations for use in controlling bit bounce and improving rock penetration rates and bit life; downhole fluid pressures for use in the management of drilling hydraulics and improved diagnosis of lost circulation and gas kicks; hole trajectory for use in reducing directional drilling costs; and downhole weight-on-bit and drilling torque for diagnosing drill bit performance. In general, any measurement that could shed light on the downhole environment would give us a better understanding of the drilling process and reduce drilling costs.

FINGER,JOHN T.; GLOWKA,DAVID ANTHONY; LIVESAY,BILLY JOE; MANSURE,ARTHUR J.; PRAIRIE,MICHAEL R.

1999-10-07T23:59:59.000Z

288

Diagnostic X-Multi-Axis Beamline  

SciTech Connect

Tomographic reconstruction of explosive events require time resolved multipal lines of sight. Considered here is a four (or eight) line of sight beam layout for a nominal 20 MeV 2000 Ampere 2 microsecond electron beam for generation of x-rays 0.9 to 5 meters from a given point, the ''firing point''. The requirement of a millimeter spatial x-ray source requires that the electron beam be delivered to the converter targets with sub-millimeter precision independent of small variations in beam energy and initial conditions. The 2 usec electron beam pulse allows for four bursts in each line, separated in time by about 500 microseconds. Each burst is divided by a electro-magnetic kicker into four (or eight) pulses, one for each beamline. The arrival time of the four (or eight) beam pulses at the x-ray target can be adjusted by the kicker timing and the sequence that the beams of each burst are switched into the different beamlines. There exists a simple conceptual path from a four beamline to a eight beamline upgrade. The eight line beamline is built up from seven unique types of sub-systems or ''blocks''. The beamline consists of 22 of these functional blocks and contains a total of 455 individual magnets, figure 1. The 22 blocks are inter-connected by a total of 30 straight line inter-block sections (IBS). Beamlines 1-4 are built from 12 blocks with conceptual layout structure shown in figure 2. Beamlines 5-8 are built with an additional 10 blocks with conceptual layout structure shown in figure 3. This beamline can be thought of as looking like a lollipop consisting of a 42 meter long stick leading to a 60 by 70 meter rectangular candy blob consisting of the eight lines of sight. The accelerator providing the electron beam is at the end of the stick and the firing point is at the center of the blob. The design allows for a two stage implementation. Beamlines 1-3 can be installed to provide a tomographic azimuthal resolution of 45 degrees. An upgrade can later be made by adding beamlines 5-8 azimuthally indexed so as to provide an azimuthal resolution of 22.5 degrees. All eight beamlines point down by 10 degrees (pitch). The x-ray converter target can be located along each beamline anywhere between 0 to 5 meters from the firing point. An example of inter-facing the Diagnostic X facility with the Darht II accelerator located at LANL will be given.

Paul, A C

2000-04-05T23:59:59.000Z

289

Improved Global Sea Surface Temperature Analyses Using Optimum Interpolation  

Science Conference Proceedings (OSTI)

The new NOAA operational global sea surface temperature (SST) analysis is described. The analyses use 7 days of in situ (ship and buoy) and satellite SST. These analyses are produced weekly and daily using optimum interpolation (OI) on a 1° grid. ...

Richard W. Reynolds; Thomas M. Smith

1994-06-01T23:59:59.000Z

290

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG  

Open Energy Info (EERE)

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG GRAPHS Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG GRAPHS Details Activities (1) Areas (1) Regions (0) Abstract: This is the fourth paper in a series on developing fluid inclusion stratigraphy (FIS) as a logging tool for geothermal bore holes. Here we address methods of displaying analyses and plotting gas ratios used for data interpretation on mudlog plots. The goal is to develop a rapid method of data display and interpretation for the up to 10,000 analyses returned by a geothermal well FIS analysis. Author(s): Norman, D.I.; Dilley, L.M.; McCulloch, J. Published: PROCEEDINGS, Thirtieth Workshop on Geothermal Reservoir

291

Radiochemistry: A versatile diagnostic for the NIF ignition campaign  

Science Conference Proceedings (OSTI)

The purpose of this paper is to provide quick, clear, concise information about radiochemical diagnostics for the NIF program. Radiochemistry is perhaps the most versatile, flexible and dynamic of all nuclear diagnostics because it provides quantitative data on multiple capsule performance parameters such as mix, asymmetry of implosion, shell and fuel {rho}R, yield, neutron spectral information, high energy neutron information, fill tube jets, charged particle stopping, and the fission yield of the hohlraum by employing a variety of nuclear reactions on materials either present naturally in the capsule or specifically doped into the capsule. The choice and location of the doped material, together with the specific nuclear reaction used to produce a measurable product nuclide or ratio of nuclides, provides significant diagnostic information on the performance of the capsule during the experiment. The nature of the experiment, design of the capsule including fuel(s), and desired diagnostic information would dictate the radiochemical dopants used on any given shot--not all reactions would be possible nor monitored on any given experiment. Some of this diagnostic information is obtainable with other diagnostics, for example, the neutron yield is measured using Cu-activation pucks or nTOF. The unique niche of radiochemistry, for which few other measurements are currently planned, is the quantification of ablator/fuel mix. This diagnostic can supply complementary information on ablator {rho}R, asymmetry and unique information on mix--three of the four important concerns of the ignition campaign. This paper will not discuss the additional nuclear chemistry and physics possible by utilizing radiochemistry collection and similar nuclear reactions.

Stoyer, M A; Cerjan, C J; Moody, K J; Hoffman, R D; Bernstein, L A; Shaughnessy, D A

2008-06-17T23:59:59.000Z

292

Impact of Thermo-Oxidative Wall Conditioning on the Performance of Diagnostic Mirrors for ITER  

Science Conference Proceedings (OSTI)

Diagnostics / Proceedings of the Fifteenth International Conference on Fusion Reactor Materials, Part A: Fusion Technology

A. Litnovsky; M. Matveeva; D. L. Rudakov; C. P. Chrobak; S. L. Allen; A. W. Leonard; P. L. Taylor; C. P. C. Wong; B. W. N. Fitzpatrick; J. W. Davis; A. A. Haasz; P. C. Stangeby; U. Breuer; V. Philipps; S. Möller

293

RF and Beam Diagnostic Instrumentation at the Advanced Photon Source (APS) Linear Accelerator (Linac)  

E-Print Network (OSTI)

RF and Beam Diagnostic Instrumentation at the Advanced Photon Source (APS) Linear Accelerator (Linac)

Grelick, A E; Arnold, N; White, M

1996-01-01T23:59:59.000Z

294

Electromagnetic Analysis of ITER Diagnostic Equatorial Port Plugs During Plasma Disruptions  

Science Conference Proceedings (OSTI)

ITER diagnostic port plugs perform many functionsincluding structural support of diagnostic systems under high electromagnetic loads while allowing for diagnostic access to the plasma. The design of diagnostic equatorial port plugs (EPP) are largely driven by electromagnetic loads and associate responses of EPP structure during plasma disruptions and VDEs. This paper summarizes results of transient electromagnetic analysis using Opera 3d in support of the design activities for ITER diagnostic EPP. A complete distribution of disruption loads on the Diagnostic First Walls (DFWs), Diagnostic Shield Modules (DSMs) and the EPP structure, as well as impact on the system design integration due to electrical contact among various EPP structural components are discussed.

Y. Zhai, R. Feder, A. Brooks, M. Ulrickson, C.S. Pitcher and G.D. Loesser

2012-08-27T23:59:59.000Z

295

Comparison of emerging diagnostic tools for large commercial HVAC systems  

SciTech Connect

Diagnostic software tools for large commercial buildings are being developed to help detect and diagnose energy and other performance problems with building operations. These software applications utilize energy management control system (EMCS) trend log data. Due to the recent development of diagnostic tools, there has been little detailed comparison among the tools and a limited awareness of tool capabilities by potential users. Today, these diagnostic tools focus mainly on air handlers, but the opportunity exists for broadening the scope of the tools to include all major parts of heating, cooling, and ventilation systems in more detail. This paper compares several tools in the following areas: (1) Scope, intent, and background; (2) Data acquisition, pre-processing, and management; (3) Problems detected; (4) Raw data visualization; (5) Manual and automated diagnostic methods and (6) Level of automation. This comparison is intended to provide practitioners and researchers with a picture of the current state of diagnostic tools. There is tremendous potential for these tools to help improve commercial building energy and non-energy performance.

Friedman, Hannah; Piette, Mary Ann

2001-04-06T23:59:59.000Z

296

Capabilities of laser diagnostics for combustion and flowfields  

Science Conference Proceedings (OSTI)

This report outlines the capabilities and introduces some of the complications of several laser diagnostic techniques that utilize a variety of optical phenomena. Originally developed for aeronautics and analytical chemistry, and more recently for combustion work, these techniques are potentially applicable to a wide variety of in-situ measurements. The goal of this report is to provide a nonexpert, whether student or researcher, with basic information about the better-established diagnostics. This introduction may lead, after further study, to application of diagnostic techniques to new and important problem areas, particularly those involved in energy conversion. In the report, considerable emphasis is placed on general concerns in choosing and using a diagnostic and on outlining the limitations of specific diagnostics. These factors, and the decisions and compromises they force, are critical elements in the selection of what to measure and the best tool with which to measure it. They are not generally reported in broad terms in the literature, however. The simple discussion here provides a preliminary, user-oriented view of lasers, data acquisition and reduction requirements, generic sources of error, and the difficulties of making good measurements, as well as the required conditions and difficulties of using particular tools.

Hutchinson, R.A.; Bomelburg, H.J.

1984-11-01T23:59:59.000Z

297

Commissioning and Performance Diagnostics for HVAC Control Systems  

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

Commissioning and Performance Diagnostics for HVAC Control Systems Commissioning and Performance Diagnostics for HVAC Control Systems Speaker(s): Ashish Singhal Date: December 20, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Philip Haves The presentation will focus on practical aspects of commissioning control loops in commercial HVAC systems and evaluating their routine performance. Simple and theoretically sound methods for diagnosing control performance will be presented that detect serious performance issues associated with control loops in modern buildings. The discussion will center on a new control loop commissioning tool that helps field personnel to quickly test, tune and troubleshoot control loops. In addition to the active tests for commissioning control loops, a suite of diagnostic algorithms are used in a

298

Operation Diagnostics: Use of Visualization Techniques and Operation  

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

Operation Diagnostics: Use of Visualization Techniques and Operation Operation Diagnostics: Use of Visualization Techniques and Operation Patterns to Verify and Optimize Dynamic Building and System Operation Speaker(s): Oliver Baumann Date: December 7, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Peng Xu Building automation systems (BAS) and building energy management systems (BEMS) have been used in modern edifices for the last 2 decades. These systems measure, process, and monitor a huge amount of data to operate the building and systems more or less properly. Often, the data is only used to signal failures or break-downs of systems or components. Further information of the data to analyze and diagnose the building operation is not used due to the lack of analysis methods and tools. Within the Operation Diagnostics, different visualization techniques are applied to

299

Passive Spectroscopic Diagnostics for Magnetically-confined Fusion Plasmas  

SciTech Connect

Spectroscopy of radiation emitted by impurities and hydrogen isotopes plays an important role in the study of magnetically-confined fusion plasmas, both in determining the effects of impurities on plasma behavior and in measurements of plasma parameters such as electron and ion temperatures and densities, particle transport, and particle influx rates. This paper reviews spectroscopic diagnostics of plasma radiation that are excited by collisional processes in the plasma, which are termed 'passive' spectroscopic diagnostics to distinguish them from 'active' spectroscopic diagnostics involving injected particle and laser beams. A brief overview of the ionization balance in hot plasmas and the relevant line and continuum radiation excitation mechanisms is given. Instrumentation in the soft X-ray, vacuum ultraviolet, ultraviolet, visible, and near-infrared regions of the spectrum is described and examples of measurements are given. Paths for further development of these measurements and issues for their implementation in a burning plasma environment are discussed.

B.C. Stratton, M. Bitter, K.W. Hill, D.L. Hillis, and J.T. Hogan

2007-07-18T23:59:59.000Z

300

Tuning the beam: a physics perspective on beam diagnostic instrumentation  

SciTech Connect

In a nutshell, the role of a beam diagnostic measurement is to provide information needed to get a particle beam from Point A (injection point) to Point B (a target) in a useable condition, with 'useable' meaning the right energy and size and with acceptable losses. Specifications and performance requirements of diagnostics are based on the physics of the particle beam to be measured, with typical customers of beam parameter measurements being the accelerator operators and accelerator physicists. This tutorial will be a physics-oriented discussion of the interplay between tuning evolutions and the beam diagnostics systems that support the machine tune. This will include the differences between developing a tune and maintaining a tune, among other things. Practical longitudinal and transverse tuning issues and techniques from a variety of proton and electron machines will also be discussed.

Gulley, Mark S [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Diagnostic development and support of MHD (magnetohydrodynamics) test facilities  

DOE Green Energy (OSTI)

Mississippi State University (MSU) is developing diagnostic instruments for Magnetohydrodynamics (MHD) power train data acquisition and for support of MHD component development test facilities. Microprocessor-controlled optical instruments, initially developed for HRSR support, are being refined, and new systems to measure temperatures and gas-seed-slag stream characteristics are being developed. To further data acquisition and analysis capabilities, the diagnostic systems are being interfaced with MHD Energy Center computers. Technical support for the diagnostic needs of the national MHD research effort is being provided. MSU personnel will also cooperate with government agencies and private industries to improve the transformation of research and development results into processes, products and services applicable to their needs.

Not Available

1989-07-01T23:59:59.000Z

302

NETL: Energy Analyses -Quality Guidelines for Energy System Studies...  

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

Energy Analyses Quality Guidelines for Energy System Studies for Fossil Energy Plants OVERVIEW Each year the U.S. Department of Energy (DOE) Office of Fossil Energy (FE) and the...

303

Chemical Analyses of Soils and other Surficial Materials of the...  

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

Chemical Analyses of Soils and other Surficial Materials of the Coterminous US Research Menu DataTools Apps Resources Let's Talk Research Alpha You are here Data.gov ...

304

Windspeed Analyses of Tornadoes Based on Structural Damage  

Science Conference Proceedings (OSTI)

Documentation is presented for the tornadoes of 28 June 1979 in the Iowa towns of Manson and Algona. Analyses of failed engineered and nonengineered structures are presented with an emphasis on those studies of observed damage that can form the ...

Amde M. Wolde-Tinsae; Max L. Porter; Donald I. McKeown

1985-07-01T23:59:59.000Z

305

Jet Stream Winds: Comparisons of Aircraft Observations with Analyses  

Science Conference Proceedings (OSTI)

Wind measurements have been obtained from commercial aircraft crossing the 1992 winter subtropical jet streams over southwest and east Asia. Comparisons of these data with new, high-resolution analyses from four of the major operational centers ...

J. Tenenbaum

1996-06-01T23:59:59.000Z

306

Summary of Failure Analyses Activities at Brookhaven National ...  

Science Conference Proceedings (OSTI)

... cause analyses have included radioactive and non-radioactive components from ... An Analysis of a Premature Fatigue Failure of an Acid Bath Mixer's Shaft under ... Stress Concentrators and Corrosion Fatigue : Root Causes and Solutions.

307

The Stratosphere–Troposphere Analyses of Regional Transport 2008 Experiment  

Science Conference Proceedings (OSTI)

The Stratosphere–Troposphere Analyses of Regional Transport 2008 (START08) experiment investigated a number of important processes in the extratropical upper troposphere and lower stratosphere (UTLS) using the National Science Foundation (NSF)–...

Laura L. Pan; Kenneth P. Bowman; Elliot L. Atlas; Steve C. Wofsy; Fuqing Zhang; James F. Bresch; Brian A. Ridley; Jasna V. Pittman; Cameron R. Homeyer; Pavel Romashkin; William A. Cooper

2010-03-01T23:59:59.000Z

308

NETL: Energy Analyses - Cost and Performance Baseline for Fossil...  

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

Energy Analyses Life Cycle Analysis USA.GOV | U.S. DEPARTMENT OF ENERGY | DOE OFFICE OF FOSSIL ENERGY DOE OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY | OFFICE OF...

309

Conservation of Mass in Three Dimensions in Global Analyses  

Science Conference Proceedings (OSTI)

For a number of reasons, conservation of mass in the global analyses on pressure coordinates is violated, yet this constraint is required for budget studies of all kinds. The imbalances arise from postprocessing the variables onto pressure ...

Kevin E. Trenberth; James W. Hurrell; Amy Solomon

1995-04-01T23:59:59.000Z

310

Material Analyses and Modification on the Tandetron Accelerator  

SciTech Connect

The Tandetron 4130MC accelerator of the Nuclear Physics Institute offers new possibilities of analyses and modification of materials by ion beams. The RBS, ERDA-TOF, RBS-channeling and PIXE methods are briefly described. Examples of analyses of materials for photonics and spintronics are presented. Also the results of investigation of polymers modified by ion implantation, which may find application in medicine, are presented.

Mackova, A.; Malinsky, P. [Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 250 68 Rez (Czech Republic); Department of Physics, Faculty of Science, J. E. Purkinje-University, Ceske mladeze 8, 400 96 Usti nad Labem (Czech Republic); Svorcik, V. [Department of Solid State Engineering, Institute of Chemical Technology, Technicka 5, 166 28 Prague (Czech Republic); Hnatowicz, V. [Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 250 68 Rez (Czech Republic); Bocan, J. [Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 250 68 Rez (Czech Republic); Department of Physics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 7, 115 19 Praha 1 (Czech Republic); Khaibullin, R.I. [Kazan Physical-Technical Institute of RAS, Sibirski Trakt 10/7, 420029 Kazan, (Russian Federation); Nekvindova, P. [Department of Inorganic Chemistry, Institute of Chemical Technology, Technickd 5, 166 28 Prague (Czech Republic)

2007-11-26T23:59:59.000Z

311

Analyses of Magnetic-Field Peak-Exposure Summary Measures  

Science Conference Proceedings (OSTI)

Past emphasis on exposure characterization and analyses for magnetic fields has been on measures of central tendency, such as long-term time-weighted average (TWA) exposure. Past emphasis on exposure characterization and analyses for magnetic fields has been on measures of central tendency such as long-term time-weighted average (TWA) exposure. This report examines peak exposure measures such as the maximum and 99th percentile of measurements during a day. EPRI sponsored this study to enhance industry kn...

2003-11-19T23:59:59.000Z

312

Diagnostics of the ITER neutral beam test facility  

SciTech Connect

The ITER heating neutral beam (HNB) injector, based on negative ions accelerated at 1 MV, will be tested and optimized in the SPIDER source and MITICA full injector prototypes, using a set of diagnostics not available on the ITER HNB. The RF source, where the H{sup -}/D{sup -} production is enhanced by cesium evaporation, will be monitored with thermocouples, electrostatic probes, optical emission spectroscopy, cavity ring down, and laser absorption spectroscopy. The beam is analyzed by cooling water calorimetry, a short pulse instrumented calorimeter, beam emission spectroscopy, visible tomography, and neutron imaging. Design of the diagnostic systems is presented.

Pasqualotto, R.; Serianni, G.; Agostini, M.; Brombin, M.; Dalla Palma, M.; Gazza, E.; Pomaro, N.; Rizzolo, A.; Spolaore, M.; Zaniol, B. [Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, Corso Stati Uniti 4, I-35127 Padova (Italy); Sonato, P.; De Muri, M. [Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, Corso Stati Uniti 4, I-35127 Padova (Italy); Dipartimento di Ingegneria Elettrica, Padova University (Italy); Croci, G. [Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Milano (Italy); Gorini, G. [Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Milano (Italy); CNISM, Dipartimento di Fisica, Universita degli Studi di Milano-Bicocca, Milano (Italy)

2012-02-15T23:59:59.000Z

313

High density harp or wire scanner for particle beam diagnostics  

DOE Patents (OSTI)

A diagnostic detector head harp (23) used to detect and characterize high energy particle beams using an array of closely spaced detector wires (21), typically carbon wires, spaced less than 0.1 cm (0.040 inch) connected to a hybrid microcircuit (25) formed on a ceramic substrate (26). A method to fabricate harps (23) to obtain carbon wire spacing and density not previously available utilizing hybrid microcircuit technology. The hybrid microcircuit (25) disposed on the ceramic substrate (26) connects electrically between the detector wires (21) and diagnostic equipment (37) which analyzes pulses generated in the detector wires (21) by the high energy particle beams.

Fritsche, Craig T. (Overland Park, KS); Krogh, Michael L. (Lee' s Summit, MO)

1996-05-21T23:59:59.000Z

314

Solar Spectroscopy and (Pseudo-)Diagnostics of the Solar Chromosphere  

E-Print Network (OSTI)

I first review trends in current solar spectrometry and then concentrate on comparing various spectroscopic diagnostics of the solar chromosphere. Some are actually not at all chromospheric but just photospheric or clapotispheric and do not convey information on chromospheric heating, even though this is often assumed. Balmer Halpha is the principal displayer of the closed-field chromosphere, but it is unclear how chromospheric fibrils gain their large Halpha opacity. The open-field chromosphere seems to harbor most if not all coronal heating and solar wind driving, but is hardly seen in optical diagnostics.

Rutten, Robert J

2009-01-01T23:59:59.000Z

315

STELLOPT Modeling of the 3D Diagnostic Response in ITER  

SciTech Connect

The ITER three dimensional diagnostic response to an n=3 resonant magnetic perturbation is modeled using the STELLOPT code. The in-vessel coils apply a resonant magnetic perturbation (RMP) fi eld which generates a 4 cm edge displacement from axisymmetry as modeled by the VMEC 3D equilibrium code. Forward modeling of flux loop and magnetic probe response with the DIAGNO code indicates up to 20 % changes in measured plasma signals. Simulated LIDAR measurements of electron temperature indicate 2 cm shifts on the low field side of the plasma. This suggests that the ITER diagnostic will be able to diagnose the 3D structure of the equilibria.

Lazerson, Samuel A

2013-05-07T23:59:59.000Z

316

Steady-State Diagnostic Model of the New York Bight  

Science Conference Proceedings (OSTI)

A qualitative evaluation is made of the output from a finite-element, steady-state diagnostic model to observed time-averaged currents. The model uses a vorticity balance equation with linear bottom friction and inputs observations of near-bottom ...

Gregory Han; Donald V. Hansen; Jerry A. Galt

1980-12-01T23:59:59.000Z

317

A Diagnostic Study of Two Intense Oceanic Cyclones  

Science Conference Proceedings (OSTI)

A diagnostic study of two intense oceanic cyclones (16–18 November 1972 and 9–11 January 1982) along the east coast of North America is presented. Both cyclones formed along a strong low-level baroclinic zone and deepened in response to an ...

Eric Rogers; Lance F. Bosart

1991-04-01T23:59:59.000Z

318

2008 Special Issue: Toyota Prius HEV neurocontrol and diagnostics  

Science Conference Proceedings (OSTI)

A neural network controller for improved fuel efficiency of the Toyota Prius hybrid electric vehicle is proposed. A new method to detect and mitigate a battery fault is also presented. The approach is based on recurrent neural networks and includes the ... Keywords: Battery diagnostics, Control, EKF, Fault mitigation, HEV, NN controller, NN model, Neurocontrol, RNN

Danil V. Prokhorov

2008-03-01T23:59:59.000Z

319

Imaging VISAR diagnostic for the National Ignition Facility (NIF)  

Science Conference Proceedings (OSTI)

The National Ignition Facility (NIF) requires diagnostics to analyze high-energy density physics experiments. A VISAR (Velocity Interferometry System for Any Reflector) diagnostic has been designed to measure shock velocities, shock breakout times, and shock emission of targets with sizes from 1 to 5 mm. An 8-inch-diameter fused silica triplet lens collects light at f/3 inside the 30-foot-diameter vacuum chamber. The optical relay sends the image out an equatorial port, through a 2-inch-thick vacuum window, and into two interferometers. A 60-kW VISAR probe laser operates at 659.5 nm with variable pulse width. Special coatings on the mirrors and cutoff filters are used to reject the NIF drive laser wavelengths and to pass a band of wavelengths for VISAR, passive shock breakout light, or thermal imaging light (bypassing the interferometers). The first triplet can be no closer than 500 mm from the target chamber center and is protected from debris by a blast window that is replaced after every event. The front end of the optical relay can be temporarily removed from the equatorial port, allowing other experimenters to use that port. A unique resolution pattern has been designed to validate the VISAR diagnostic before each use. All optical lenses are on kinematic mounts so that the pointing accuracy of the optical axis can be checked. Seven CCD cameras monitor the diagnostic alignment.

Malone, R M; Bower, J R; Bradley, D K; Capelle, G A; Celeste, J R; Celliers, P M; Collins, G W; Eckart, M J; Eggert, J H; Frogget, B C; Guyton, R L; Hicks, D G; Kaufman, M I; MacGowan, B J; Montelongo, S; Ng, E W; Robinson, R B; Tunnell, T W; Watts, P W; Zapata, P G

2004-08-30T23:59:59.000Z

320

Wave Activity Diagnostics Applied to Baroclinic Wave Life Cycles  

Science Conference Proceedings (OSTI)

Wave activity diagnostics are calculated for four different baroclinic wave life cycles, including the LC1 and LC2 cases studied by Thorncroft, Hoskins, and McIntyre. The wave activity is a measure of the disturbance relative to some zonally ...

Gudrun Magnusdottir; Peter H. Haynes

1996-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Thermal imaging diagnostics of high-current electron beams  

SciTech Connect

The thermal imaging diagnostics of measuring pulsed electron beam energy density is presented. It provides control of the electron energy spectrum and a measure of the density distribution of the electron beam cross section, the spatial distribution of electrons with energies in the selected range, and the total energy of the electron beam. The diagnostics is based on the thermal imager registration of the imaging electron beam thermal print in a material with low bulk density and low thermal conductivity. Testing of the thermal imaging diagnostics has been conducted on a pulsed electron accelerator TEU-500. The energy of the electrons was 300-500 keV, the density of the electron current was 0.1-0.4 kA/cm{sup 2}, the duration of the pulse (at half-height) was 60 ns, and the energy in the pulse was up to 100 J. To register the thermal print, a thermal imager Fluke-Ti10 was used. Testing showed that the sensitivity of a typical thermal imager provides the registration of a pulsed electron beam heat pattern within one pulse with energy density over 0.1 J/cm{sup 2} (or with current density over 10 A/cm{sup 2}, pulse duration of 60 ns and electron energy of 400 keV) with the spatial resolution of 0.9-1 mm. In contrast to the method of using radiosensitive (dosimetric) materials, thermal imaging diagnostics does not require either expensive consumables, or plenty of processing time.

Pushkarev, A.; Kholodnaya, G.; Sazonov, R.; Ponomarev, D. [Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050 (Russian Federation)

2012-10-15T23:59:59.000Z

322

Molecular Lines as Diagnostics of Solar and Stellar Magnetic Fields  

E-Print Network (OSTI)

Molecular Lines as Diagnostics of Solar and Stellar Magnetic Fields S.V. Berdyugina1, S.K. Solanki2 (Berdyugina et al. 2000; Berdyugina & Solanki 2001a). The synthetic Stokes profiles of various molecular and sunspot temperature. Introducing molecular lines into the inversion of sunspot spectra leads

Berdyugina, Svetlana

323

Electrically heated particulate filter diagnostic systems and methods  

DOE Patents (OSTI)

A system that diagnoses regeneration of an electrically heated particulate filter is provided. The system generally includes a grid module that diagnoses a fault of the grid based on at least one of a current signal and a voltage signal. A diagnostic module at least one of sets a fault status and generates a warning signal based on the fault of the grid.

Gonze, Eugene V [Pinckney, MI

2009-09-29T23:59:59.000Z

324

Examinations of electron temperature calculation methods in Thomson scattering diagnostics  

Science Conference Proceedings (OSTI)

Electron temperature from Thomson scattering diagnostic is derived through indirect calculation based on theoretical model. {chi}-square test is commonly used in the calculation, and the reliability of the calculation method highly depends on the noise level of input signals. In the simulations, noise effects of the {chi}-square test are examined and scale factor test is proposed as an alternative method.

Oh, Seungtae; Lee, Jong Ha; Wi, Hanmin [National Fusion Research Institute, 113 Gwahangno, Yuseong-gu, Daejeon 305-333 (Korea, Republic of)

2012-10-15T23:59:59.000Z

325

Undulator A diagnostics at the Advanced Photon Source  

SciTech Connect

Diagnostics of Undulator A{number_sign}2 (UA2) radiation was performed during the October 1997 mn at the Advanced Photon Source (APS). The UA2 undulator is a standard 3.3-cm-period APS Undulator A, which was positioned downstream from the center of the straight section at Sector 8. The diagnostics included the angular-spectral measurements of the undulator radiation to determine the undulator radiation absolute spectral flux and the particle beam divergence. The results of the absolute spectral flux measurements are compared to the undulator spectrum calculated from measured undulator magnetic field. The particle`s energy spread was determined from spectra comparison. Previously, the authors reported the first measurements made on Undulator A at the APS. The purpose of the present report is to summarize the results of the diagnostics performed on the Sector 8 undulator at the request of the IMM-CAT staff, and to present a more general discussion of undulator radiation sources at the APS and details of their diagnostics.

Ilinski, P.

1998-01-01T23:59:59.000Z

326

Recent Advances in Laser-based Diagnostics for Gaseous Flows  

Science Conference Proceedings (OSTI)

Laser-based diagnostic techniques offer unique capabilities for experimentation on gaseous flows. In this paper, we overview recent progress of two concepts: spectrally resolved absorption and planar laser-induced fluorescence (PLIF) imaging. The absorption ... Keywords: PLIF, absorption spectroscopy, acetone, combustion control, diode laser, hypersonic, supersonic

R. Hanson; D. Baer; C. Morris; M. Thurber; E. Furlong; S. Wehe

1999-12-01T23:59:59.000Z

327

Soft x-ray diagnostics for pulsed power machines  

SciTech Connect

A variety of soft x-ray diagnostics are being fielded on the Los Alamos National Laboratory Pegasus and Procyon pulsed power systems and also being fielded on joint US/Russian magnetized target fusion experiments known as MAGO (Magnitoye Obzhatiye). The authors have designed a low-cost modular photoemissive detector designated the XRD-96 that uses commercial 1100 series aluminum for the photocathode. In addition to photocathode detectors a number of designs using solid state silicon photodiodes have been designed and fielded. They also present a soft x-ray time-integrated pinhole camera system that uses standard type TMAX-400 photographic film that obviates the need for expensive and no longer produced zero-overcoat soft x-ray emulsion film. In a typical experiment the desired spectral energy cuts, signal intensity levels, and desired field of view will determine diagnostic geometry and x-ray filters selected. The authors have developed several computer codes to assist in the diagnostic design process and data deconvolution. Examples of the diagnostic design process and data analysis for a typical pulsed power experiment are presented.

Idzorek, G.C.; Coulter, W.L.; Walsh, P.J.; Montoya, R.R.

1995-08-01T23:59:59.000Z

328

Key issues in ITER diagnostics: Problems and solutions (invited)  

Science Conference Proceedings (OSTI)

The key problems associated with designing diagnostic systems for the International Thermonuclear Experimental Reactor (ITER) are identified and representative solutions are described. The plans for dealing with some outstanding issues are briefly presented. The detailed work is specific to the ITER

A. E. Costley; Members of the ITER Joint Central Team and Home Teams

1999-01-01T23:59:59.000Z

329

Multifunctional ligand for use as a diagnostic or therapeutic pharmaceutical  

DOE Patents (OSTI)

A compound and method of making a compound for use as a diagnostic or therapeutic pharmaceutical are revealed. The ligand comprises either a phosphorous or germanium core and at least two hydrazine groups forming a ligand for bonding to a metal extending from the phosphorous or germanium core.

Katti, K.V.; Volkert, W.A.; Ketring, A.R.; Singh, P.R.

1996-05-14T23:59:59.000Z

330

Baselining Studies and Analyses Brett Amidan Pacific Northwest National Laboratory  

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

Analyses Analyses Brett Amidan Pacific Northwest National Laboratory b.amidan@pnnl.gov 27 June 2013 Washington, DC DOE/OE Transmission Reliability Program Project Objectives  Investigate power grid data (Eastern Interconnect State Estimator Data at this time), including phase angle differences between site pairs (both within an ISO and between ISOs), current, voltage, frequency, and possibly derived variables, like mode meter and oscillation.  Identify atypical events and characterize typical patterns.  Recommend upper and lower limits for "normal" operation. 2 Major Technical Accomplishments to be Completed this Year  Receive a new list of phase angle pairs from PJM and implement them into the process / analysis.  Run updated analyses including the new pairs, and other

331

NREL: State and Local Activities - Clean Energy Policy Analyses  

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

Clean Energy Policy Analyses Clean Energy Policy Analyses Want notifications of new reports and data? Subscribe to E-mail Updates NREL's Clean Energy Policy Analyses (CEPA) project seeks to quantify the connection between state and local policies and clean energy market development, and analyze the impacts of state policy on decision makers. The project brings together U.S. state and local policy stakeholders to consider all of the factors that make up effective state and local energy policies and to identify barriers that impede them. Learn more about clean energy policy basics and CEPA's activities to analyze: State policies Region-specific policies Local policies Innovative policies. This NREL-managed project is funded by the U.S. Department of Energy Weatherization and Intergovernmental Program. A voluntary technical

332

The Foreseer Tool - Analysing Energy, Land and Water Resource Futures  

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

The Foreseer Tool - Analysing Energy, Land and Water Resource Futures The Foreseer Tool - Analysing Energy, Land and Water Resource Futures through Sankey Diagrams Speaker(s): Bojana Bajzelj Grant Kopec Julian Allwood Liz Curmi Date: November 10, 2011 - 1:30pm Location: 90-3122 Seminar Host/Point of Contact: Anita Estner Larry Dale The BP funded Foreseer project at the University of Cambridge is creating a tool to visualise the influence of future demand and policy choices on the coupled physical requirements for energy, water and land resources in a region of interest. The basis of the tool is a set of linked physical descriptions of energy, water and land, plus the technologies that transform those resources into final services - e.g. housing, food, transport and goods. The tool has a modular structure, with the potential to incorporate specialised analyses or models to calculate future demand,

333

Interpretation of chemical analyses of waters collected from two geothermal  

Open Energy Info (EERE)

Interpretation of chemical analyses of waters collected from two geothermal Interpretation of chemical analyses of waters collected from two geothermal wells at Coso, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Interpretation of chemical analyses of waters collected from two geothermal wells at Coso, California Details Activities (1) Areas (1) Regions (0) Abstract: Wellhead and downhole water samples were collected and analyzed from a 114.3-m well at Coso Hot Springs (Coso No. 1) and a 1477-m well (CGEH No. 1) 3.2 km to the west. The same chloride concentration is present in hot waters entering both wells (about 2350 mg/kg), indicating that a hot-water-dominated geothermal system is present. The maximum measured temperatures are 142 degrees C in the Coso No. 1 well and 195 degrees C in the CGEH No. 1 well. Cation and sulfate isotope geothermometers indicate

334

Department of Energy's team's analyses of Soviet designed VVERs  

DOE Green Energy (OSTI)

The purpose of this report is to summarize the results of the US Department of Energy (DOE) Analysis Team's analyses of Soviet designed VVERs (Water-cooled, Water-moderated Energy Reactor). The principle objective of this undertaking is to provide a basis to better understand the safety related features of the Soviet designed VVERs to be better prepared to respond domestically in the event of an accident at such a unit. The USDOE Team's analyses are presented together with supporting and background information. The report is structured to allow the reader to develop an understanding of safety related features of Soviet designed VVERs (as well as the probable behavior of these units under a variety of off normal conditions), to understand the USDOE Team's analyses of Soviet designed VVERs, and to formulate informed opinions.

Not Available

1989-09-01T23:59:59.000Z

335

Chemical analyses and preliminary interpretation of waters collected from  

Open Energy Info (EERE)

analyses and preliminary interpretation of waters collected from analyses and preliminary interpretation of waters collected from the CGEH No. 1 geothermal well at Coso, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Chemical analyses and preliminary interpretation of waters collected from the CGEH No. 1 geothermal well at Coso, California Details Activities (2) Areas (2) Regions (0) Abstract: The chloride-rich water obtained in 1967 from the shallow (114.3 m) Coso Hot Springs well No. 1 comes from a deep aquifer with a temperature at least as high as about 240 C and possibly higher than 275 C. Similar, but slightly diluted and cooled chloride-rich water enters the 1477-meter deep CGEH No. 1 well drilled in 1977 about 3.2 km to the west of the 1967 well. From the data in hand the Coso geothermal system appears to be a hot

336

Functional Area Qualification Standard Job Task Analyses | Department of  

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

Services » Assistance » Federal Technical Capability Program » Services » Assistance » Federal Technical Capability Program » Functional Area Qualification Standard Job Task Analyses Functional Area Qualification Standard Job Task Analyses DOE Aviation Manager DOE Aviation Safety Officer Chemical Processing Civil/Structural Engineering Confinement Ventilation and Process Gas Treatment Construction Management Deactivation and Decommissioning Electrical Systems and Safety Oversight Emergency Management Environmental Compliance Environmental Restoration Facility Representative Fire Protection Engineering General Technical Base Industrial Hygiene Instrument and Controls NNSA Package Certification Engineer Nuclear Explosive Safety Study Nuclear Safety Specialist Quality Assurance Radiation Protection Safeguards and Security Safeguards and Security General Technical Base

337

Numerical analyses of the G-tunnel mining evaluations experiment  

SciTech Connect

The displacements resulting from excavation of a drift in layered tuffs at Rainier Mesa, Nevada, have been analyzed. Also, a series of two-dimensional finite-element analyses of the excavation sequence using linear elastic and nonlinear compliant joint material models has been made. Measured displacements were on the order of millimeters and show vertical and horizontal closure. Calculated displacements are also on the order of millimeters; vertical and horizontal closure is predicted in some of the analyses performed. 5 refs., 3 figs., 3 tabs.

Bauer, S.J.; Costin, L.S. [Sandia National Labs., Albuquerque, NM (USA); Johnson, R.L. [New Mexico Univ., Albuquerque, NM (USA)

1990-05-01T23:59:59.000Z

338

Evaluating a Hybrid Prognostic–Diagnostic Model That Improves Wind Forecast Resolution in Complex Coastal Topography  

Science Conference Proceedings (OSTI)

The results from a hybrid approach that combines the forecasts of a mesoscale model with a diagnostic wind model to produce high-resolution wind forecasts in complex coastal orography are evaluated. The simple diagnostic wind model [Winds on ...

Francis L. Ludwig; Douglas K. Miller; Shawn G. Gallaher

2006-01-01T23:59:59.000Z

339

On simplifying allometric analyses of forest biomass Dimitris Zianis*  

E-Print Network (OSTI)

On simplifying allometric analyses of forest biomass Dimitris Zianis* , Maurizio Mencuccini biomass plays a key role in sustainable management and in estimating forest carbon stocks. The most common mathematical model in biomass studies takes the form of the power function M ¼ aDb where a and b

Mencuccini, Maurizio

340

2010 oil spill: trajectory projections based on ensemble drifter analyses  

E-Print Network (OSTI)

2010 oil spill: trajectory projections based on ensemble drifter analyses Yu-Lin Chang & Leo Oey # Springer-Verlag 2011 Abstract An accurate method for long-term (weeks to months) projections of oil spill released at the northern Gulf of Mexico spill site is demonstrated during the 2010 oil spill

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Analysing Superimposed Oriented Patterns Ingo Stuke, Til Aach  

E-Print Network (OSTI)

Analysing Superimposed Oriented Patterns Ingo Stuke, Til Aach Institute for Signal Processing orientation in images is often posed as the task of finding the minimum variance axis in a lo- cal eigenvalue signals the presence of more than one local orientation. We describe a framework for estimating

Lübeck, Universität zu

342

Analyses of Selected Provisions of Proposed Energy Legislation: 2003  

Reports and Publications (EIA)

This study responds to a July 31, 2003 request from Senator Byron L. Dorgan. The study is based primarily on analyses EIA has previously done for studies requested by Congress. It includes analysis of the Renewable Portfolio Standard, Renewable Fuels Standard, production in the Alaskan National Wildlife Refuge, the construction of an Alaskan Natural Gas pipeline, and various tax provisions.

Paul Holtberg

2003-09-01T23:59:59.000Z

343

Comparative guide to emerging diagnostic tools for large commercial HVAC systems  

Science Conference Proceedings (OSTI)

This guide compares emerging diagnostic software tools that aid detection and diagnosis of operational problems for large HVAC systems. We have evaluated six tools for use with energy management control system (EMCS) or other monitoring data. The diagnostic tools summarize relevant performance metrics, display plots for manual analysis, and perform automated diagnostic procedures. Our comparative analysis presents nine summary tables with supporting explanatory text and includes sample diagnostic screens for each tool.

Friedman, Hannah; Piette, Mary Ann

2001-05-01T23:59:59.000Z

344

Development of a Compact Diagnostic System for Monitoring Hard X-Rays  

Science Conference Proceedings (OSTI)

Plasma Engineering - Fueling and Diagnostics / Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 2)

Y. S. Lee; U. W. Nam; A. C. England; Z. Y. Chen; J. W. Yoo; W. C. Kim; Y. K. Oh

345

Architecture Plan of the Real-Time Diagnostic Signals Acquisition System Toward JT-60SA Project  

Science Conference Proceedings (OSTI)

Plasma Engineering - Fueling and Diagnostics / Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 2)

Shinya Sakata et al.

346

A New Diagnostic for Duct Leakage: DeltaQ  

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

A New Diagnostic for Duct Leakage: DeltaQ A New Diagnostic for Duct Leakage: DeltaQ Speaker(s): Iain Walker Date: February 21, 2002 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Cynthia Tast Duct leakage has been identified as a major contributor to HVAC energy use and building infiltration, particularly in residences. In order to make good estimates of HVAC system energy performance, we need to know how much air leaks between the ducts and outside the building during system operation. Existing methods for determining duct leakage do not perform well due to experimental procedures that produce imprecise results or they require many assumptions to convert measurements into the desired leakage flows. The DeltaQ duct leakage test has been developed by the Energy Performance of Buildings Group at LBNL to determine duct leakage flows by

347

Advanced Sensor Diagnostics in Nuclear Power Plant Applications  

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

Sensor Diagnostics in Nuclear Power Plant Applications Sensor Diagnostics in Nuclear Power Plant Applications R.B. Vilim Argonne National Laboratory Sensor degradation occurs routinely during nuclear power plant operation and can contribute to reduced power production and less efficient plant operation. Mechanisms include drift of sensor electronics and mechanical components, fouling and erosion of flow meter orifice plates, and general degradation of thermocouples. One solution to this problem is the use of higher quality instrumentation and of physical redundancy. This, however, increases plant cost and does not address the degradation problem in a fundamental way. An alternative approach is to use signal processing algorithms to detect a degraded sensor and to construct a replacement value using an

348

Performance of Advanced Light Source particle beam diagnostics  

SciTech Connect

The Advanced Light Source (ALS), a third-generation synchrotron radiation facility, is complete. The particle beam diagnostics have been installed and tested. The beam injection systems have been running for two years. We have performance data on beam position monitors, beam intensity monitors, scintillators, beam collimators, a 50 {Omega} Faraday cup, and broad-band striplines and kickers used in the linac, transport lines, and the booster synchrotron. The single-turn monitoring capability of the booster beam position monitoring system has been particularly useful for studying beam dynamics. Beam diagnostics for the storage ring are being commissioned. In this paper we describe each instrument, show its performance, and outline how the instruments are controlled and their output data displayed.

Hinkson, J.

1993-05-01T23:59:59.000Z

349

Diagnostics systems developments and applications for laser fusion experiments  

SciTech Connect

A variety of systems are required for adequate diagnostics of laser fusion experiments. Picosecond scale temporal measurements are typically made with ultrafast streak cameras. Visible and x-ray sensitive streak cameras with resolutions of 6 psec and 15 psec, respectively, and dynamic recording range in excess of 10/sup 3/ are in regular use on experiments at Livermore. The characteristics of these cameras and their applications to target experiment diagnostics are described. The development and testing of a prototype ultrafast framing system is discussed. Because of the need for ''real time'' data acquisition, analysis, and control systems, techniques for providing directly computer interfaced image data from streak and framing cameras and optical imaging systems are being developed. The status of these developments and the characteristics of the computer interfaced data and control systems on Argus and Shiva are summarized.

Coleman, L.W.

1977-09-08T23:59:59.000Z

350

Cracked shaft detection and diagnostics: A literature review  

E-Print Network (OSTI)

ABSTRACT—Cracks in shafts have long been identified as factors limiting the safe and reliable operation of turbomachines. They can sometimes result in catastrophic failure of equipment (rotor bursts) and, more often, in costly process upsets, repairs and premature scrapping and replacement of equipment. Cracked shafts still pose a significant and real threat to equipment in spite of the great advances made in the areas of metallurgy, manufacturing and design. In the past two decades, much research and many resources have gone into developing various on-line and off-line diagnostic techniques to effectively detect cracks before they cause serious damage. Because of the enormous amount of ongoing research in this area (more than 500 technical papers have been published in English alone in the past 30 years), there is a real need to periodically condense and summarize the information. This paper reviews literature on cracked shaft detection and diagnostics published after 1990.

Giridhar Sabnavis; R. Gordon Kirk; Mary Kasarda; Dane Quinn; Giridhar Sabnavis; R. Gordon Kirk; Mary Kasarda; Dane Quinn

2004-01-01T23:59:59.000Z

351

Optical diagnostics integrated with laser spark delivery system  

DOE Patents (OSTI)

A spark delivery system for generating a spark using a laser beam is provided, and includes a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. The laser delivery assembly further includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. Other embodiments use a fiber laser to generate a spark. Embodiments of the present invention may be used to create a spark in an engine. Yet other embodiments include collecting light from the spark or a flame resulting from the spark and conveying the light for diagnostics. Methods of using the spark delivery systems and diagnostic systems are provided.

Yalin, Azer (Fort Collins, CO); Willson, Bryan (Fort Collins, CO); Defoort, Morgan (Fort Collins, CO); Joshi, Sachin (Fort Collins, CO); Reynolds, Adam (Fort Collins, CO)

2008-09-02T23:59:59.000Z

352

TRIDENT high-energy-density facility experimental capabilities and diagnostics  

Science Conference Proceedings (OSTI)

The newly upgraded TRIDENT high-energy-density (HED) facility provides high-energy short-pulse laser-matter interactions with powers in excess of 200 TW and energies greater than 120 J. In addition, TRIDENT retains two long-pulse (nanoseconds to microseconds) beams that are available for simultaneous use in either the same experiment or a separate one. The facility's flexibility is enhanced by the presence of two separate target chambers with a third undergoing commissioning. This capability allows the experimental configuration to be optimized by choosing the chamber with the most advantageous geometry and features. The TRIDENT facility also provides a wide range of standard instruments including optical, x-ray, and particle diagnostics. In addition, one chamber has a 10 in. manipulator allowing OMEGA and National Ignition Facility (NIF) diagnostics to be prototyped and calibrated.

Batha, S. H.; Aragonez, R.; Archuleta, F. L.; Archuleta, T. N.; Benage, J. F.; Cobble, J. A.; Cowan, J. S.; Fatherley, V. E.; Flippo, K. A.; Gautier, D. C.; Gonzales, R. P.; Greenfield, S. R.; Hegelich, B. M.; Hurry, T. R.; Johnson, R. P.; Kline, J. L.; Letzring, S. A.; Loomis, E. N.; Lopez, F. E.; Luo, S. N. [Los Alamos National Laboratory, P.O. Box 1663, MS E526, Los Alamos, New Mexico 87545 (United States)] (and others)

2008-10-15T23:59:59.000Z

353

A Fuzzy Diagnostic Model and Its Application in Automotive Engineering Diagnosis  

Science Conference Proceedings (OSTI)

This paper describes a fuzzy diagnostic model that contains a fast fuzzy rule generation algorithm and a priority rule based inference engine. The fuzzy diagnostic model has been implemented in a fuzzy diagnostic system for the End-of-Line test at ... Keywords: fault diagnosis, fuzzy logic, machine learning

Yi Lu; Tie Qi Chen; Brennan Hamilton

1998-11-01T23:59:59.000Z

354

Global hypothesis test to simultaneously compare the predictive values of two binary diagnostic tests  

Science Conference Proceedings (OSTI)

The positive and negative predictive values of a binary diagnostic test are measures of the clinical accuracy of the diagnostic test, which depend on the sensitivity and specificity of the diagnostic test and the disease prevalence, and therefore they ... Keywords: Global hypothesis test, Multiple comparisons, Positive and negative predictive values

José Antonio Roldán Nofuentes; Juan de Dios Luna del Castillo; Miguel Ángel Montero Alonso

2012-05-01T23:59:59.000Z

355

Nuclear Maintenance Applications Center: Air-Operated Valve Diagnostic Testing Guide  

Science Conference Proceedings (OSTI)

This report provides information for personnel involved in the performance of air-operated valve (AOV) diagnostic testing, including the benefits of using diagnostics to understand valve health and to tie information into preventive maintenance programs. It provides insights for experienced personnel as well as basic information, guidance, and instructions for personnel assigned to perform, analyze, or purchase diagnostic test equipment.

2011-12-23T23:59:59.000Z

356

LASER APPLICATIONS: H- BEAM PHOTO-DETACHMENT AND PUSH BUTTON DIAGNOSTICS  

Science Conference Proceedings (OSTI)

The laser based nonintrusive H- beam diagnostics and laser assisted H- beam stripping technologies have been developed at the Spallation Neutron Source (SNS). This paper reviews the present status of the SNS laser based diagnostics and the recent R&D progress on the fiber transmission of laser pulses and power enhancement optical cavity which will be used in diagnostics and laser stripping.

Liu, Yun [ORNL

2012-01-01T23:59:59.000Z

357

Nuclear diagnostics for the National Ignition Facility ,,invited... Thomas J. Murphy,a)  

E-Print Network (OSTI)

Nuclear diagnostics for the National Ignition Facility ,,invited... Thomas J. Murphy,a) Cris W unprecedented opportunities for the use of nuclear diagnostics in inertial confinement fusion experiments to produce up to 1019 DT neutrons. In addition to a basic set of nuclear diagnostics based on previous

358

High-frequency Probing Diagnostic for Hall Current Plasma Thrusters  

DOE Green Energy (OSTI)

High-frequency oscillations (1-100 MHz) in Hall thrusters have apparently eluded significant experimental scrutiny. A diagnostic setup, consisting of a single Langmuir probe, a special shielded probe connector-positioner, and an electronic impedance-matching circuit, was successfully built and calibrated. Through simultaneous high-frequency probing of the Hall thruster plasma at multiple locations, high-frequency plasma waves have been identified and characterized for various thruster operating conditions.

A.A. Litvak; Y. Raitses; N.J. Fisch

2001-10-25T23:59:59.000Z

359

Electron cyclotron resonant heating (ECRH) diagnostic system on TMX  

SciTech Connect

The ECRH diagnostics system monitors the net power delivered to the plasma by four 200-kW gyrotron oscillators, the frequency of each gyrotron, and some operating parameters of the gyrotron power supply system. The combination CAMAC- and GPIB-based data acquisition system is under desktop computer control that provides the capability for data conversion and display. The data acquisition system is also interfaced to the main computer system that acquires and archives the data.

Coffield, F.E.; Griffin, D.H.

1981-10-20T23:59:59.000Z

360

The Inverse Problem of Remote Neutrino Diagnostics of Intrareactor Processes  

E-Print Network (OSTI)

Using the well-known experimental data the inverse problem of neutrino diagnostics of reactor core is considered. The solution of this problem makes it possible to determine distantly the current value of nuclear density of each nuclear fuel components with known accuracy and also opens up the possibility for the development of neutrino online technology of temporal evolution of nuclear fuel isotopic structure and reactor power.

V. D. Rusov; T. N. Zelentsova; V. A. Tarasov; D. A. Litvinov

2004-03-19T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Method to directly radiolabel antibodies for diagnostic imaging and therapy  

DOE Patents (OSTI)

The invention is a novel method and kit for directly radiolabeling proteins such as antibodies or antibody fragments for diagnostic and therapeutic purposes. The method comprises incubating a protein-containing solution with a solution of sodium ascorbate; adding a required quantity of reduced radionuclide to the incubated protein. A kit is also provided wherein the protein and/or reducing agents may be in lyophilized form.

Thakur, Mathew L. (Cherry Hill, NJ)

1994-01-01T23:59:59.000Z

362

Method to directly radiolabel antibodies for diagnostic imaging and therapy  

DOE Patents (OSTI)

The invention is a novel method and kit for directly radiolabeling proteins such as antibodies or antibody fragments for diagnostic and therapeutic purposes. The method comprises incubating a protein-containing solution with a solution of sodium ascorbate; adding a required quantity of reduced radionuclide to the incubated protein. A kit is also provided wherein the protein and/or reducing agents may be in lyophilized form.

Thakur, Mathew L. (Cherry Hill, NJ)

1991-01-01T23:59:59.000Z

363

Spectral Line Shapes as a Diagnostic Tool in Magnetic Fusion  

DOE Green Energy (OSTI)

Spectral line shapes and intensities are used for obtaining information on the various regions of magnetic fusion devices. Emission from low principal quantum numbers of hydrogen isotopes is analyzed for understanding the complex recycling mechanism. Lines emitted from high principal quantum numbers of hydrogen and helium are dominated by Stark effect, allowing an electronic density diagnostic in the divertor. Intensities of lines emitted by impurities are fitted for a better knowledge of ion transport in the confined plasma.

Stamm, R; Capes, H; Demura, A; Godbert-Mouret, L; Koubiti, M; Marandet, Y; Mattioli, M; Rosato, J; Rosmej, F; Fournier, K B

2006-07-22T23:59:59.000Z

364

Measure Guideline: Air Conditioner Diagnostics, Maintenance, and Replacement  

SciTech Connect

This guideline responds to the need for an efficient means of identifying, diagnosing, and repairing faults in air conditioning systems in existing homes that are undergoing energy upgrades. Inadequate airflow due to constricted ducts or undersized filters, improper refrigerant charge, and other system defects can be corrected at a fraction of the cost of equipment replacement and can yield significant savings. The guideline presents a two-step approach to diagnostics and repair.

Springer, D.; Dakin, B.

2013-03-01T23:59:59.000Z

365

Charge exchange spectroscopy as a fast ion diagnostic on TEXTOR  

SciTech Connect

An upgraded charge exchange spectroscopy diagnostic has been taken into operation at the TEXTOR tokamak. The angles of the viewing lines with the toroidal magnetic field are close to the pitch angles at birth of fast ions injected by one of the neutral beam injectors. Using another neutral beam for active spectroscopy, injected counter the direction in which fast ions injected by the first beam are circulating, we can simultaneously measure a fast ion tail on the blue wing of the D{sub {alpha}} spectrum while the beam emission spectrum is Doppler shifted to the red wing. An analysis combining the two parts of the spectrum offers possibilities to improve the accuracy of the absolute (fast) ion density profiles. Fast beam modulation or passive viewing lines cannot be used for background subtraction on this diagnostic setup and therefore the background has to be modeled and fitted to the data together with a spectral model for the slowing down feature. The analysis of the fast ion D{sub {alpha}} spectrum obtained with the new diagnostic is discussed.

Delabie, E.; Jaspers, R. J. E.; Hellermann, M. G. von [FOM-Rijnhuizen, EURATOM-FOM, NL-3430 BE Nieuwegein (Netherlands); Nielsen, S. K. [Association EURATOM-Risoe National Laboratory for Sustainable Energy, Technical University of Denmark, DK-4000 Roskilde (Denmark); Marchuk, O. [Forschungszentrum Juelich, EURATOM-FZJ, D-52424 Juelich (Germany)

2008-10-15T23:59:59.000Z

366

SNS/BNL Diagnostics System Group, Spallation Neutron Source, SNS  

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

SNS/BNL Diagnostics System Group SNS/BNL Diagnostics System Group Homepage The Spallation Neutron Source project is a collaboration between six national laboratories of the United states to build a Mega Watt neutrons source driven by a proton accelerator. The complex is going to be build in Oak Ridge (Tennessee) and consists of a full energy (1 Gev) linac, an accumulator ring and a mercury target with several instruments for neutron scattering. Information on the project can be found at http://www.sns.gov. At Brookhaven National Laboratory we work mainly on the accumulator ring and transfer lines diagnostics (HEBT, Ring, RTBT). Some of the systems are SNS-wide ie: the Beam Loss Monitor system and Beam Current Monitor system. In addition our group provides parts of other systems to our partner laboratories. Our group is part or the Collider Accelerator Division that is also in charge of RHIC and the AGS complex. If you are looking for information on a particular topic you can contact the persons working on it.

367

PERFORMANCE OF THE DIAGNOSTICS FOR NSLS-II LINAC COMMISSIONING  

Science Conference Proceedings (OSTI)

The National Synchrotron Light Source II (NSLS-II) is a state of the art 3-GeV third generation light source currently under construction at Brookhaven National Laboratory. The NSLS-II injection system consists of a 200 MeV linac, a 3-GeV booster synchrotron and associated transfer lines. The transfer lines not only provide a means to deliver the beam from one machine to another, they also provide a suite of diagnostics and utilities to measure the properties of the beam to be delivered. In this paper we discuss the suite of diagnostics that will be used to commission the NSLS-II linac and measure the beam properties. The linac to booster transfer line can measure the linac emittance with a three screens measurement or a quadrupole scan. Energy and energy spread are measured in a dispersive section. Total charge and charge uniformity are measured with wall current monitors in the linac and transformers in the transfer line. We show that the performance of the diagnostics in the transfer line will be sufficient to ensure the linac meets its specifications and provides a means of trouble shooting and studying the linac in future operation.

Fliller III, R.; Padrazo, D.; Wang, G.M.; Heese, R.; Hseuh H.-C.; Johanson, M.; Kosciuk, B.N.; Pinayev, I.; Rose, J.; Shaftan, T.; Singh, O.

2011-03-28T23:59:59.000Z

368

Mid-Infrared Spectral Diagnostics of Nearby Galaxies  

E-Print Network (OSTI)

The Spitzer Space Telescope is pushing into new frontiers in high redshift astronomy. Closer to home, Spitzer is making an equally large impact on our understanding of galaxy formation and evolution. In this contribution we present mid-infrared diagnostics based largely on data from the Spitzer Infrared Nearby Galaxies Survey (SINGS). Our main result is that these mid-infrared diagnostics effectively constrain a target's dominant power source. The combination of a high ionization line index and PAH strength serves as an efficient discriminant between AGN and star-forming nuclei, confirming progress made with ISO spectroscopy on starbursting and ultraluminous infrared galaxies. The sensitivity of Spitzer allows us to probe fainter nuclei and star-forming regions within galaxy disks. We find that both star-forming nuclei and extranuclear regions stand apart from nuclei that are powered by Seyfert or LINER activity. In fact, we identify areas within three diagnostic diagrams containing >90% Seyfert/LINER nuclei or >90% HII regions/HII nuclei. We also find that, compared to starbursting nuclei, extranuclear regions typically separate even further from AGN, especially for low-metallicity extranuclear environments. In addition, instead of the traditional mid-infrared approach to differentiating between AGN and star-forming sources that utilizes relatively weak high-ionization lines, we show that strong low-ionization cooling lines of X-ray dominated regions like [SiII] 34.82 micron can alternatively be used as excellent discrimants.

Daniel A. Dale; the SINGS Team

2006-04-01T23:59:59.000Z

369

Enhancing Building Operations Through Automated Diagnostics: Field Test Results  

E-Print Network (OSTI)

The Whole Building Diagnostician (WBD) is a modular diagnostic software system that provides detection and diagnosis of problems with the operation of heating, ventilation, and air-conditioning (HVAC) systems and major energy end-uses. It has been extensively field tested and demonstrated in buildings over the past several years. WBD found problems with many air-handling units at all sites. The problems ranged from a simple set point deviation to improper implementation of controls. The results from these demonstrations, along with the feedback from building operators and managers on the use of diagnostic tools, are presented in the paper. Experience from field tests indicates that providing diagnostic tools to building operators can increase their awareness of equipment faults, but it will not by itself solve the problems of inefficient operations. Changes in operation and maintenance practices and behavior are needed. We discuss how these new technologies might be delivered and used more effectively to better manage facilities, improving their condition and increasing their energy efficiency.

Katipamula, S.; Brambley, M. R.; Bauman, N.; Pratt, R. G.

2003-01-01T23:59:59.000Z

370

International Energy Agency Building Energy Simulation Test and Diagnostic Method (IEA BESTEST) Multi-Zone Non-Airflow In-Depth Diagnostic Cases: MZ320 -- MZ360  

SciTech Connect

This report documents a set of diagnostic test cases for multi-zone heat transfer models. The methodology combines empirical validation, analytical verification, and comparative analysis techniques.

Neymark, J.; Judkoff, R.; Alexander, D.; Felsmann, C.; Strachan, P.; Wijsman, A.

2008-09-01T23:59:59.000Z

371

I I Hydrological/Geological Studies Radiochemical Analyses of Water  

Office of Legacy Management (LM)

' ' Hydrological/Geological Studies Radiochemical Analyses of Water Samples from Selected Streams, Wells, Springs and Precipitation Collected Prior to Re-Entry . , Drilling, Project Rulison-6, 197 1 HGS 7 ' DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. Prepared Under Agreement No. AT(29-2)-474 f o r the Nevada Operations Office U.S. Atomic Energy Commission PROPERTY OF U. S. GOVERNMENT -UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY - F e d e r a l . C e n t e r , D e n v e r , C o l o r a d o 80225 RADIOCHEMICAL ANALYSES OF WATER FROM SELECTED STREAMS, WELLS, SPRINGS, AND PRECIPITATION COLLECTED PRIOR TO REENTRY DRILLING, PROJECT RULISON I , BY Paul T. - V o e g e l i

372

Analyses of Hydrogen Storage Materials and On-Board Systems  

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

Hydrogen Analyses of Hydrogen Hydrogen Analyses of Hydrogen Storage Materials and On Storage Materials and On - - Board Systems Board Systems TIAX LLC 15 Acorn Park Cambridge, MA 02140-2390 Tel. 617- 498-6108 Fax 617-498-7054 www.TIAXLLC.com Reference: D0268 © 2007 TIAX LLC Hydrogen Delivery Analysis Meeting May 8, 2007 Stephen Lasher Kurtis McKenney Yong Yang Bob Rancatore Stefan Unnasch Matt Hooks This presentation does not contain any proprietary or confidential information Overview 1 SL/042007/D0268 ST32_Lasher_H2 Storage_v1.ppt Start date: June 2004 End date: Sept 2009 41% Complete Timeline Barriers addressed B. Cost C. Efficiency K. System Life Cycle Assessments Barriers Total project funding DOE share = $1.5M No cost share FY06 = $275k FY07 = $300k (plan) Budget Argonne and other National

373

Overview of DOE-Supported Infrastructure Analyses Webinar  

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

Overview of DOE-Supported Overview of DOE-Supported Infrastructure Analyses Webinar U.S. Department of Energy Fuel Cell Technologies Office July 24, 2013 2 | Fuel Cell Technologies Office eere.energy.gov * Introduction and webinar objectives * Analyses and Models * Examples * Component-level Models * Market Penetration * Transition Scenarios * Financial Models * Impact of Policies * Regional Models * Model enhancements * Next steps Agenda 3 | Fuel Cell Technologies Office eere.energy.gov H 2 USA is being formed as a public/private partnership among DOE and other Federal Agencies, automakers, hydrogen and industrial gas suppliers, state governments, academic institutions, and additional stakeholders to promote the widespread adoption of fuel cell electric vehicles (FCEVs).

374

Hydrogen-combustion analyses of large-scale tests  

DOE Green Energy (OSTI)

This report uses results of the large-scale tests with turbulence performed by the Electric Power Research Institute at the Nevada Test Site to evaluate hydrogen burn-analysis procedures based on lumped-parameter codes like COMPARE-H2 and associated burn-parameter models. The test results: (1) confirmed, in a general way, the procedures for application to pulsed burning, (2) increased significantly our understanding of the burn phenomenon by demonstrating that continuous burning can occur, and (3) indicated that steam can terminate continuous burning. Future actions recommended include: (1) modification of the code to perform continuous-burn analyses, which is demonstrated, (2) analyses to determine the type of burning (pulsed or continuous) that will exist in nuclear containments and the stable location if the burning is continuous, and (3) changes to the models for estimating burn parameters.

Gido, R.G.; Koestel, A.

1986-01-01T23:59:59.000Z

375

Combining a thermal-imaging diagnostic with an existing imaging VISAR diagnostic at the National Ignition Facility (NIF)  

Science Conference Proceedings (OSTI)

Optical diagnostics are currently being designed to analyze high-energy density physics experiments at the National Ignition Facility (NIF). Two independent line-imaging Velocity Interferometer System for Any Reflector (VISAR) interferometers have been fielded to measure shock velocities, breakout times, and emission of targets having sizes of 1-5 mm. An 8-inch-diameter, fused silica triplet lens collects light at f/3 inside the 30-foot-diameter NIF vacuum chamber. VISAR recordings use a 659.5-nm probe laser. By adding a specially coated beam splitter to the interferometer table, light at wavelengths from 540 to 645 nm is spilt into a thermal-imaging diagnostic. Because fused silica lenses are used in the first triplet relay, the intermediate image planes for different wavelengths separate by considerable distances. A corrector lens on the interferometer table reunites these separated wavelength planes to provide a good image. Thermal imaging collects light at f/5 from a 2-mm object placed at Target Chamber Center (TCC). Streak cameras perform VISAR and thermal-imaging recording. All optical lenses are on kinematic mounts so that pointing accuracy of the optical axis may be checked. Counter-propagating laser beams (orange and red) are used to align both diagnostics. The red alignment laser is selected to be at the 50 percent reflection point of the beam splitter. This alignment laser is introduced at the recording streak cameras for both diagnostics and passes through this special beam splitter on its way into the NIF vacuum chamber.

Malone, R; Celeste, J; Celliers, P; Frogget, B; Guyton, R L; Kaufman, M; Lee, T; MacGowan, B; Ng, E W; Reinbachs, I P; Robinson, R B; Seppala, L; Tunnell, T W; Watts, P

2005-07-07T23:59:59.000Z

376

Combining a thermal-imaging diagnostic with an existing imaging VISAR diagnostic at the National Ignition Facility (NIF)  

Science Conference Proceedings (OSTI)

Optical diagnostics are currently being designed to analyze high-energy density physics experiments at the National Ignition Facility (NIF). Two independent line-imaging Velocity Interferometer System for Any Reflector (VISAR) interferometers have been fielded to measure shock velocities, breakout times, and emission of targets having sizes of 1–5 mm. An 8-inch-diameter, fused silica triplet lens collects light at f/3 inside the 30-foot-diameter NIF vacuum chamber. VISAR recordings use a 659.5-nm probe laser. By adding a specially coated beam splitter to the interferometer table, light at wavelengths from 540 to 645 nm is spilt into a thermal-imaging diagnostic. Because fused silica lenses are used in the first triplet relay, the intermediate image planes for different wavelengths separate by considerable distances. A corrector lens on the interferometer table reunites these separated wavelength planes to provide a good image. Thermal imaging collects light at f/5 from a 2-mm object placed at Target Chamber Center (TCC). Streak cameras perform VISAR and thermal-imaging recording. All optical lenses are on kinematic mounts so that pointing accuracy of the optical axis may be checked. Counter-propagating laser beams (orange and red) are used to align both diagnostics. The red alignment laser is selected to be at the 50 percent reflection point of the beam splitter. This alignment laser is introduced at the recording streak cameras for both diagnostics and passes through this special beam splitter on its way into the NIF vacuum chamber.

Robert M. Malone; John R. Celesteb; Peter M. Celliers; Brent C. Froggeta; Robert L. Guyton; Morris I. Kaufman; Tony L. Lee; Brian J. MacGowan; Edmund W. Ng; Imants P. Reinbachs; Ronald B. Robinson; Lynn G. Seppala; Tom W. Tunnell; Phillip W. Watts

2005-01-01T23:59:59.000Z

377

Computer program for conducting acoustical analyses of HVAC systems.  

Science Conference Proceedings (OSTI)

An interactive Windows?based computer program has been developed that can be used to conduct complete acoustical analyses of HVAC systems. The program can be used to track sound from a HVACsound source such as a fan to a room. Both sound from a single path between a sound source and room or from multiple paths between a sound source and room can be investigated. The program has a full set of editing features that include change

Douglas D. Reynolds; Scott C. Mitchell

1996-01-01T23:59:59.000Z

378

Template for Performing Human Reliability Analyses: Lesson Plans  

Science Conference Proceedings (OSTI)

Probabilistic safety analyses (PSA) incorporate human reliability assessment (HRA) to account for possible errors by a nuclear power plant operating crew both prior to and during postulated accidents. Studies have shown that human errors are a large contributor to the likelihood of such accidents; today, the nuclear industry is acutely aware of its importance. A cadre of experts has developed HRA technology by applying it in many risk studies. Examples are reported in the literature. These lesson plans p...

2002-06-07T23:59:59.000Z

379

Analyses of hypothetical FCI's in a fast reactor  

Science Conference Proceedings (OSTI)

Parametric analyses using the SIMMER code were performed to evaluate the potential for a severe recriticality from a pressure-driven recompaction caused by an energetic FCI during the transition phase of a hypothetical accident in a fast reactor. For realistic and reasonable estimates for the assumed accident conditions, a severe recriticality was not predicted. The conditions under which a severe recriticality would be obtained or averted were identified. 10 figures, 2 tables.

Padilla, A. Jr.; Martin, F.J.; Niccoli, L.G.

1981-01-01T23:59:59.000Z

380

REVIEW OF CHARM DALITZ-PLOT ANALYSES Written November  

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

CHARM CHARM DALITZ-PLOT ANALYSES Written November 2003 by D. Asner (University of Pittsburgh) Weak nonleptonic decays of charm mesons are expected to proceed dominantly through resonant two-body decays in several theoretical models [1]. The Dalitz-plot analysis tech- nique [2,3] has been applied to the decays D → rc, r → ab where the decay products a, b, and c are K or π and the intermediate state r is a scalar, vector, or tensor meson. Ta- ble 1 lists published analyses of D → Kππ, → πππ, → KKπ, and → KKK decays. The analyses include studies of dou- bly Cabibbo-suppressed decays [4,5], searches for CP violation [5-8], properties of established light mesons [9-11], and prop- erties of ππ [4,11,12] and Kπ [13] S-wave states. Future studies could improve sensitivity to D 0 -D 0 mixing [14]. The amplitude of the process, D → rc, r → ab, is given by the product of three factors:

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381

Wintertime Supercell Thunderstorms in a Subtropical Environment: A Diagnostic Study  

Science Conference Proceedings (OSTI)

The present study documents the environment, initiation, and evolution of three isolated supercell storms on 19 December 2002, as the first case near Taiwan reported in the literature, mainly using radar data and manual and gridded analyses. In a ...

Chung-Chieh Wang; George Tai-Jen Chen; Shan-Chien Yang; Hung-Chi Chou

2009-01-01T23:59:59.000Z

382

A Diagnostic Study of Baroclinic Disturbances in Polar Air Streams  

Science Conference Proceedings (OSTI)

Quasi-Lagmngian budgets of mass, vorticity and heat are calculated following disturbances that form within polar air streams. Observed cases are extracted from the European Centre for Medium-range Weather Forecasts analyses during the First GARP ...

Mark R. Sinclair; Russell L. Elsberry

1986-11-01T23:59:59.000Z

383

A Diagnostic Comparison of Alaskan and Siberian Strong Anticyclones  

Science Conference Proceedings (OSTI)

Strong anticyclones have a significant impact on the cool season climate over mid- and high-latitude landmasses as they are typically accompanied by arctic air masses that can eventually move into populated midlatitude regions. Composite analyses ...

Justin E. Jones; Judah Cohen

2011-05-01T23:59:59.000Z

384

T-590: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting  

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

0: HP Diagnostics Input Validation Hole Permits Cross-Site 0: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting Attacks T-590: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting Attacks March 29, 2011 - 3:05pm Addthis PROBLEM: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting Attacks in ActiveSync Lets Remote Users Execute Arbitrary Code. PLATFORM: HP Diagnostics software: version(s) 7.5, 8.0 prior to 8.05.54.225 ABSTRACT: A potential security vulnerability has been identified in HP Diagnostics. The vulnerability could be exploited remotely resulting in cross site scripting (XSS). reference LINKS: HP Document ID: c02770512 SecurityTracker Alert ID: 1025255 CVE-2011-0892 Security Focus Document ID: c02770512 IMPACT ASSESSMENT: High Discussion: A vulnerability was reported in HP Diagnostics. A remote user can conduct

385

T-590: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting  

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

0: HP Diagnostics Input Validation Hole Permits Cross-Site 0: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting Attacks T-590: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting Attacks March 29, 2011 - 3:05pm Addthis PROBLEM: HP Diagnostics Input Validation Hole Permits Cross-Site Scripting Attacks in ActiveSync Lets Remote Users Execute Arbitrary Code. PLATFORM: HP Diagnostics software: version(s) 7.5, 8.0 prior to 8.05.54.225 ABSTRACT: A potential security vulnerability has been identified in HP Diagnostics. The vulnerability could be exploited remotely resulting in cross site scripting (XSS). reference LINKS: HP Document ID: c02770512 SecurityTracker Alert ID: 1025255 CVE-2011-0892 Security Focus Document ID: c02770512 IMPACT ASSESSMENT: High Discussion: A vulnerability was reported in HP Diagnostics. A remote user can conduct

386

Electrical signature analysis applications for non-intrusive automotive alternator diagnostics  

DOE Green Energy (OSTI)

Automotive alternators are designed to supply power for automobile engine ignition systems as well as charge the storage battery. This product is used in a large market where consumers are concerned with acoustic noise and vibration that comes from the unit. as well as overall quality and dependability. Alternators and generators in general are used in industries other than automotive, such as transportation and airline industries and in military applications. Their manufacturers are interested in pursuing state-of-the-art methods to achieve higher quality and reduced costs. Preliminary investigations of non-intrusive diagnostic techniques utilizing the inherent voltage signals of alternators have been performed with promising results. These techniques are based on time and frequency domain analyses of specially conditioned signals taken from several alternators under various test conditions. This paper discusses investigations that show correlations of the alternator output voltage to airborne noise production. In addition these signals provide insight into internal magnetic characteristics that relate to design and/or assembly problems.

Ayers, C.W.

1996-03-01T23:59:59.000Z

387

Application of microseismic technology to hydraulic fracture diagnostics: GRI/DOE Field Fracturing Multi-Sites Project  

SciTech Connect

The objective of the Field Fracturing Multi-Sites Project (M-Site) is to conduct field experiments and analyze data that will result in definitive determinations of hydraulic fracture dimensions using remote well and treatment well diagnostic techniques. In addition, experiments will be conducted to provide data that will resolve significant unknowns with regard to hydraulic fracture modeling, fracture fluid rheology and fracture treatment design. These experiments will be supported by a well-characterized subsurface environment as well as surface facilities and equipment conducive to acquiring high-quality data. It is anticipated that the project`s research advancements will provide a foundation for a fracture diagnostic service industry and hydraulic fracture optimization based on measured fracture response. The M-Site Project is jointly sponsored by the Gas Research Institute (GRI) and the US Department of Energy (DOE). The site developed for M-Site hydraulic fracture experimentation is the former DOE Multiwell Experiment (MWX) site located near Rifle, Colorado. The MWX project drilled three closely-spaced wells (MWX-1, MWX-2 and MWX-3) which were the basis for extensive reservoir analyses and tight gas sand characterizations in the blanket and lenticular sandstone bodies of the Mesaverde Group. The research results and background knowledge gained from the MWX project are directly applicable to research in the current M-Site Project.

Wilmer, R. [CER Corp., Las Vegas, NV (United States); Warpinski, N.R. [Sandia National Laboratories (United States); Wright, T.B. [Resources Engineering Systems (United States); Branagan, P.T. [Branagan & Associates (United States); Fix, J.E. [Fix & Associates (United States)

1995-06-01T23:59:59.000Z

388

STATISTICAL ANALYSES ON THERMAL ASPECTS OF SOLAR FLARES  

SciTech Connect

The frequency distribution of flare energies provides a crucial diagnostic to calculate the overall energy residing in flares and to estimate the role of flares in coronal heating. It often takes a power law as its functional form. We have analyzed various variables, including the thermal energies E{sub th} of 1843 flares at their peak time. They were recorded by both Geostationary Operational Environmental Satellites and Reuven Ramaty High-Energy Solar Spectroscopic Imager during the time period from 2002 to 2009 and are classified as flares greater than C 1.0. The relationship between different flare parameters is investigated. It is found that fitting the frequency distribution of E{sub th} to a power law results in an index of -2.38. We also investigate the corrected thermal energy E{sub cth}, which represents the flare total thermal energy including the energy loss in the rising phase. Its corresponding power-law slope is -2.35. Compilation of the frequency distributions of the thermal energies from nanoflares, microflares, and flares in the present work and from other authors shows that power-law indices below -2.0 have covered the range from 10{sup 24} to 10{sup 32} erg. Whether this frequency distribution can provide sufficient energy to coronal heatings in active regions and the quiet Sun is discussed.

Li, Y. P.; Gan, W. Q.; Feng, L., E-mail: wqgan@pmo.ac.cn [Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing (China)

2012-03-10T23:59:59.000Z

389

Effects of photon escape on diagnostic diagrams for HII regions  

E-Print Network (OSTI)

In this article we first outline the mounting evidence that a significant fraction of the ionizing photons emitted by OB stars within HII regions escape from their immediate surroundings and explain how an HII region structure containing high density contrast in homogeneities facilitates this escape. Next we describe sets of models containing inhomogeneities which are used to predict tracks in the commonly used diagnostic diagrams (based on ratios of emission lines) whose only independent variable is the photon escape fraction, xi. We show that the tracks produced by the models in two of the most cited of these diagrams conform well to the distribution of observed data points, with the models containing optically thick inhomogeneities ("CLUMPY" models) yielding somewhat better agreement than those with optically thin inhomogeneities ("FF" models). We show how variations in the ionization parameter U, derived from emission line ratios, could be due to photon escape. Using a rather wide range of assumptions about the filling factor of dense clumps we find, for a selected set of regions observed in M51 photon escape fraction ranging between 30% and 50%. We show, using oxygen as the test element, that models with different assumptions about the gas inhomogeneity will give variations in the abundance values derived from diagnostic diagrams, but do not claim here to have a fully developed set of diagnostic tools to improve abundance determinations made in this way. We finally propose a combination of line ratios with the absolute Halpha luminosity of a given HII region, which allows us to determine the photon escape fraction, and hence resolve the degeneracy between U and xi.

C. Giammanco; J. E. Beckman; B. Cedres

2005-04-11T23:59:59.000Z

390

Continuous-Estimator Representation for Monte Carlo Criticality Diagnostics  

Science Conference Proceedings (OSTI)

An alternate means of computing diagnostics for Monte Carlo criticality calculations is proposed. Overlapping spherical regions or estimators are placed covering the fissile material with a minimum center-to-center separation of the 'fission distance', which is defined herein, and a radius that is some multiple thereof. Fission neutron production is recorded based upon a weighted average of proximities to centers for all the spherical estimators. These scores are used to compute the Shannon entropy, and shown to reproduce the value, to within an additive constant, determined from a well-placed mesh by a user. The spherical estimators are also used to assess statistical coverage.

Kiedrowski, Brian C. [Los Alamos National Laboratory; Brown, Forrest B. [Los Alamos National Laboratory

2012-06-18T23:59:59.000Z

391

A Simple, Low Cost Longitudinal Phase Space Diagnostic  

Science Conference Proceedings (OSTI)

For proper operation of the LCLS [1] x-ray free-electron laser (FEL), and other similar machines, measurement and control of the electron bunch longitudinal phase space is critical. The LCLS accelerator includes two bunch compressor chicanes to magnify the peak current. These magnetic chicanes can generate significant coherent synchrotron radiation (CSR), which can distort the phase space distribution. We propose a diagnostic scheme by exciting a weak skew quadrupole at an energy-chirped, high dispersion point in the first LCLS bunch compressor (BC1) to reconstruct longitudinal phase space on an OTR screen after BC1, allowing a time-resolved characterization of CSR effects.

Bertsche, Kirk; Emma, Paul; /SLAC; Shevchenko, Oleg; /Novosibirsk, IYF

2009-05-15T23:59:59.000Z

392

Initial diagnostics commissioning results for the Advanced Photon Source (APS)  

Science Conference Proceedings (OSTI)

Principal diagnostics systems have been installed and nearly all have been commissioned on the subsystems of the Advanced Photon Source (APS) facility. Data have been obtained on beam position, beam profile, current, beam loss rate, and synchrotron radiation monitors on both injector rings and most recently the main 7-GeV storage ring. Results for the 150- to 450-MeV electron beams in the accumulator ring, up to 7 GeV in the injector synchrotron, and 4.5 to 7 GeV in the SR will be presented.

Lumpkin, A.; Patterson, D.; Wang, X. [and others

1995-07-01T23:59:59.000Z

393

Upgrade of the JET far infrared interferometer diagnostic  

Science Conference Proceedings (OSTI)

In recent years there has been a major upgrade of the JET far infrared diagnostic system consisting of a new laser system with the wavelength at 118.8 {mu}m at and more advanced processing electronics for phase counting. This provides a second colour measurement of the electron plasma density on the vertical system. Due to the shorter wavelength, the plasma induced laser beam refraction is reduced by a factor of three alleviating density errors caused by loss of signal (so-called 'fringe jumps'[A. Murari et al., Rev. Sci. Instrum. 77, 073505 (2006)]), in particular during high performance plasmas experiments in JET.

Boboc, A.; Edlington, T.; Dorling, S. [EURATOM/CCFE Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Gil, C.; Pastor, P.; Spuig, P. [CEA, IRFM, Cadarache F-13108 Saint-Paul-Lez-Durance (France); Collaboration: JET-EFDA Contributors

2012-10-15T23:59:59.000Z

394

Electrical Safety - Monthly Analyses of Electrical Safety Occurrences  

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

Office of Analysis Office of Analysis Operating Experience Committee Safety Alerts Safety Bulletins Annual Reports Special Operations Reports Safety Advisories Special Reports Causal Analysis Reviews Contact Us HSS Logo Electrical Safety Monthly Analyses of Electrical Safety Occurrences 2013 September 2013 Electrical Safety Occurrences August 2013 Electrical Safety Occurrences July 2013 Electrical Safety Occurrences June 2013 Electrical Safety Occurrences May 2013 Electrical Safety Occurrences April 2013 Electrical Safety Occurrences March Electrical Safety Occurrence February Electrical Safety Occurrence January Electrical Safety Occurrence 2012 December Electrical Safety Occurrence November Electrical Safety Occurrence October Electrical Safety Occurrence September Electrical Safety Occurrence

395

Radiochemical Analyses of Water Samples from Selected Streams  

Office of Legacy Management (LM)

> > : , - ' and Precipitation Collected in - Connection with Calibration-Test Flaring of Gas From Test Well, - I August 15-October 13, 197,0,, Project Rulison-8, 197 1 HGS 9 DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Federal center, Denver, Colorado 80225 RADIOCHEMICAL ANALYSES OF WATER SAMPLES FROM SELECTED STREAMS AND PRECIPITATION COLLECTED IN CONNECTION WITH CALIBRATION-TEST FLARING OF GAS FROM TEST WELL, AUGUST.15-OCTDBER 13, 1970 PROJECT RULISON Hans C. Claassen and Paul T. Voegeli, Sr. CONTENTS Page Introduction..................... ................................... 1 Results.

396

Reclamation and reuse of Freon in total petroleum hydrocarbon analyses  

Science Conference Proceedings (OSTI)

At the Savannah River Technology Center (SRTC), we have successfully demonstrated the use of a solvent recycling system to reclaim spent Freon solvent in total petroleum hydrocarbon (TPH) analyses of radioactive samples. A wide variety of sample types including ground water, organics, laboratory waste, process control, sludge, soils, and others are received by our lab for total petroleum hydrocarbon analysis. This paper demonstrates the successful use of a commercially available carbon bed recycle system which we modified to enable the recovery of 95-98 percent of the radioactive contaminated Freon. This system has been used successfully in our lab for the past three years.

Ekechukwu, A.A.; Young, J.E.

1997-12-31T23:59:59.000Z

397

Review of recent ORNL specific-plant analyses  

Science Conference Proceedings (OSTI)

The Oak Ridge National Laboratory (ORNL) has been helping the Nuclear Regulatory Commission (NRC) develop the pressurized thermal shock (PTS) evaluation methodology since the mid-1970s. During the early 1980s, ORNL developed the integrated PTS (IPTS) methodology, which is a probabilistic approach that includes postulation of PTS transients, estimation of their frequencies, thermal/hydraulic analyses to obtain the corresponding thermal and pressure loadings on the reactor pressure vessel, and probabilistic fracture mechanics analyses. The scope of the IPTS program included development of the probabilistic fracture mechanics code OCA-P and application of the IPTS methodology to three nuclear plants in the US (Oconee I, Calvert Cliffs I, and H. B. Robinson II). The results of this effort were used to help establish the PTS Rule (10CFR50.61) and Regulatory Guide 1.154, which pertains to the PTS issue. The IPTS Program was completed in 1985, and since that time the ORNL related effort has been associated with long-term programs aimed at improving/updating the probabilistic fracture mechanics methodology and input data. In 1990, the NRC requested that ORNL review a vessel-integrity evaluation report submitted to the NRC by the Yankee Atomic Electric Co. for the Yankee Rowe reactor and that ORNL also perform an independent probabilistic fracture mechanics analysis. Details of the methodology and preliminary results are the subject of this paper/presentation.

Cheverton, R.D.; Dickson, T.L.

1991-12-31T23:59:59.000Z

398

Review of recent ORNL specific-plant analyses  

SciTech Connect

The Oak Ridge National Laboratory (ORNL) has been helping the Nuclear Regulatory Commission (NRC) develop the pressurized thermal shock (PTS) evaluation methodology since the mid-1970s. During the early 1980s, ORNL developed the integrated PTS (IPTS) methodology, which is a probabilistic approach that includes postulation of PTS transients, estimation of their frequencies, thermal/hydraulic analyses to obtain the corresponding thermal and pressure loadings on the reactor pressure vessel, and probabilistic fracture mechanics analyses. The scope of the IPTS program included development of the probabilistic fracture mechanics code OCA-P and application of the IPTS methodology to three nuclear plants in the US (Oconee I, Calvert Cliffs I, and H. B. Robinson II). The results of this effort were used to help establish the PTS Rule (10CFR50.61) and Regulatory Guide 1.154, which pertains to the PTS issue. The IPTS Program was completed in 1985, and since that time the ORNL related effort has been associated with long-term programs aimed at improving/updating the probabilistic fracture mechanics methodology and input data. In 1990, the NRC requested that ORNL review a vessel-integrity evaluation report submitted to the NRC by the Yankee Atomic Electric Co. for the Yankee Rowe reactor and that ORNL also perform an independent probabilistic fracture mechanics analysis. Details of the methodology and preliminary results are the subject of this paper/presentation.

Cheverton, R.D.; Dickson, T.L.

1991-01-01T23:59:59.000Z

399

Project W-320 SAR and process control thermal analyses  

SciTech Connect

This report summarizes the results of thermal hydraulic computer modeling supporting Project W-320 for process control and SAR documentation. Parametric analyses were performed for the maximum steady state waste temperature. The parameters included heat load distribution, tank heat load, fluffing factor and thermal conductivity. Uncertainties in the fluffing factor and heat load distribution had the largest effect on maximum waste temperature. Safety analyses were performed for off normal events including loss of ventilation, loss of evaporation and loss of secondary chiller. The loss of both the primary and secondary ventilation was found to be the most limiting event with saturation temperature in the bottom waste reaching in just over 30 days. An evaluation was performed for the potential lowering of the supernatant level in tank 241-AY-102. The evaluation included a loss of ventilation and steam bump analysis. The reduced supernatant level decreased the time to reach saturation temperature in the waste for the loss of ventilation by about one week. However, the consequence of a steam bump were dramatically reduced.

Sathyanarayana, K.

1997-06-19T23:59:59.000Z

400

Seismic response analyses for reactor facilities at Savannah River  

Science Conference Proceedings (OSTI)

The reactor facilities at the Savannah River Plant (SRP) were designed during the 1950's. The original seismic criteria defining the input ground motion was 0.1 G with UBC (uniform building code) provisions used to evaluate structural seismic loads. Later ground motion criteria have defined the free field seismic motion with a 0.2 G ZPA (free field acceleration) and various spectral shapes. The spectral shapes have included the Housner spectra, a site specific spectra, and the US NRC (Nuclear Regulatory Commission) Reg. Guide 1.60 shape. The development of these free field seismic criteria are discussed in the paper. The more recent seismic analyses have been of the following type: fixed base response spectra, frequency independent lumped parameter soil/structure interaction (SSI), frequency dependent lumped parameter SSI, and current state of the art analyses using computer codes such as SASSI. The results from these computations consist of structural loads and floor response spectra (used for piping and equipment qualification). These results are compared in the paper and the methods used to validate the results are discussed. 14 refs., 11 figs.

Miller, C.A. Costantino, C.J. (City Univ. of New York, NY (USA)); Xu, J. (Brookhaven National Lab., Upton, NY (USA))

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Preparation of environmental analyses for synfuel and unconventional gas technologies  

DOE Green Energy (OSTI)

Government agencies that offer financial incentives to stimulate the commercialization of synfuel and unconventional gas technologies usually require an analysis of environmental impacts resulting from proposed projects. This report reviews potentially significant environmental issues associated with a selection of these technologies and presents guidance for developing information and preparing analyses to address these issues. The technologies considered are western oil shale, tar sand, coal liquefaction and gasification, peat, unconventional gas (western tight gas sands, eastern Devonian gas shales, methane from coal seams, and methane from geopressured aquifers), and fuel ethanol. Potentially significant issues are discussed under the general categories of land use, air quality, water use, water quality, biota, solid waste disposal, socioeconomics, and health and safety. The guidance provided in this report can be applied to preparation and/or review of proposals, environmental reports, environmental assessments, environmental impact statements, and other types of environmental analyses. The amount of detail required for any issue discussed must, by necessity, be determined on a case-by-case basis.

Reed, R.M. (ed.)

1982-09-01T23:59:59.000Z

402

Monte Carlo parameter studies and uncertainty analyses with MCNP5  

SciTech Connect

A software tool called mcnp-pstudy has been developed to automate the setup, execution, and collection of results from a series of MCNPS Monte Carlo calculations. This tool provides a convenient means of performing parameter studies, total uncertainty analyses, parallel job execution on clusters, stochastic geometry modeling, and other types of calculations where a series of MCNPS jobs must be performed with varying problem input specifications. Monte Carlo codes are being used for a wide variety of applications today due to their accurate physical modeling and the speed of today's computers. In most applications for design work, experiment analysis, and benchmark calculations, it is common to run many calculations, not just one, to examine the effects of design tolerances, experimental uncertainties, or variations in modeling features. We have developed a software tool for use with MCNP5 to automate this process. The tool, mcnp-pstudy, is used to automate the operations of preparing a series of MCNP5 input files, running the calculations, and collecting the results. Using this tool, parameter studies, total uncertainty analyses, or repeated (possibly parallel) calculations with MCNP5 can be performed easily. Essentially no extra user setup time is required beyond that of preparing a single MCNP5 input file.

Brown, F. B. (Forrest B.); Sweezy, J. E. (Jeremy E.); Hayes, R. B. (Robert B.)

2004-01-01T23:59:59.000Z

403

Reproducibility of chemical analyses of raw Colorado oil shales  

DOE Green Energy (OSTI)

This study was undertaken to establish the real magnitudes of the errors of the determinations of total carbon, acid-evolved carbon dioxide, organic carbon, total nitrogen, total hydrogen, and total sulfur in oil shales ranging the natural gamut of kerogen richness. Four shales, one low in kerogen, two of medium kerogen content, and one very rich shale, were divided into twelve samples each. These were submitted for analysis, randomly and under blind labels, over a 15-month period. The results show that the true errors of the carbon and sulfur analyses are much larger than replicate differences would indicate, while intersample variance was comparable to between-replicate variance for nitrogen and hydrogen. Still, the errors for total carbon, nitrogen and hydrogen, as determined with the Perkin-Elmer elemental analyzer, are comparable to or smaller than those expected for fully combustible compounds by Perkin-Elmer experts. Historical plots of within-group variations show definite biases which may be correctable but whose causes have not been found. Samples about ten times larger than the 2-mg samples recommended for pure combustible compounds are probably appropriate for oil shale. A regular quality-control program should be instituted for these analyses.

Carley, J.F.

1983-08-29T23:59:59.000Z

404

Active spectroscopic measurements using the ITER diagnostic system  

SciTech Connect

Active (beam-based) spectroscopic measurements are intended to provide a number of crucial parameters for the ITER device being built in Cadarache, France. These measurements include the determination of impurity ion temperatures, absolute densities, and velocity profiles, as well as the determination of the plasma current density profile. Because ITER will be the first experiment to study long timescale ({approx}1 h) fusion burn plasmas, of particular interest is the ability to study the profile of the thermalized helium ash resulting from the slowing down and confinement of the fusion alphas. These measurements will utilize both the 1 MeV heating neutral beams and a dedicated 100 keV hydrogen diagnostic neutral beam. A number of separate instruments are being designed and built by several of the ITER partners to meet the different spectroscopic measurement needs and to provide the maximum physics information. In this paper, we describe the planned measurements, the intended diagnostic ensemble, and we will discuss specific physics and engineering challenges for these measurements in ITER.

Thomas, D. M. [ITER Organization, 13067 St. Paul-lez-Durance Cedex (France); Counsell, G. [Fusion for Energy, 08019 Barcelona (Spain); Johnson, D. [US ITER Project Office, Oak Ridge, Tennessee 37830 (United States); Vasu, P. [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India); Zvonkov, A. [Russian Research Center ''Kurchatov Institute'', Moscow 123182 (Russian Federation)

2010-10-15T23:59:59.000Z

405

Electron Beam Charge Diagnostics for Laser Plasma Accelerators  

SciTech Connect

A comprehensive study of charge diagnostics is conducted to verify their validity for measuring electron beams produced by laser plasma accelerators (LPAs). First, a scintillating screen (Lanex) was extensively studied using subnanosecond electron beams from the Advanced Light Source booster synchrotron, at the Lawrence Berkeley National Laboratory. The Lanex was cross calibrated with an integrating current transformer (ICT) for up to the electron energy of 1.5 GeV, and the linear response of the screen was confirmed for charge density and intensity up to 160 pC/mm{sup 2} and 0.4 pC/(ps mm{sup 2}), respectively. After the radio-frequency accelerator based cross calibration, a series of measurements was conducted using electron beams from an LPA. Cross calibrations were carried out using an activation-based measurement that is immune to electromagnetic pulse noise, ICT, and Lanex. The diagnostics agreed within {+-}8%, showing that they all can provide accurate charge measurements for LPAs.

Nakamura, Kei; Gonsalves, Anthony; Lin, Chen; Smith, Alan; Rodgers, David; Donahue, Rich; Byrne, Warren; Leemans, Wim

2011-06-27T23:59:59.000Z

406

Operation of target diagnostics in a petawatt laser environment (invited)  

Science Conference Proceedings (OSTI)

The operation of target diagnostics in a high-energy petawatt laser environment is made challenging by the large number of energetic electrons, hard x rays, and energetic particles produced in laser-target interactions. The charged particles and x rays from the target create secondary radiation and a large electromagnetic pulse (EMP) when they hit structures inside the target chamber. The primary particles create secondary particles and radiation that can create excessive background in sensitive detectors. The large EMP can impair or damage electronic equipment and detectors, especially inside the target chamber. Shielding and EMP mitigation strategies developed during experiments at the Rutherford Appleton Vulcan petawatt laser facility will be presented for a variety of detection systems, such as single-photon-counting x-ray charge-coupled device cameras, multiple diamond x-ray detectors, and scintillator-photomultiplier detectors. These strategies will be applied to the development of diagnostic systems for the OMEGA EP, high-energy petawatt laser facility, currently under construction at the Laboratory for Laser Energetics.

Stoeckl, C.; Glebov, V. Yu.; Jaanimagi, P. A.; Knauer, J. P.; Meyerhofer, D. D.; Sangster, T. C.; Storm, M.; Sublett, S.; Theobald, W.; Key, M. H.; MacKinnon, A. J.; Patel, P.; Neely, D.; Norreys, P. A. [Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States); Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Rutherford Appleton Laboratory, Didcot OX11 0QX, Oxon (United Kingdom)

2006-10-15T23:59:59.000Z

407

ORNL/IAT ARMATURE DIAGNOSTICS DEMONSTRATION TEST REPORT  

SciTech Connect

This test established feasibility for 'on the fly' temperature measurements of rail gun projectiles. In addition, an approach for projectile velocity measurement was also demonstrated. Insight was gained into other useful optical and fiberoptic diagnostic approaches. Instantaneous diagnostics could be critical for achieving further improvements in rail gun operation. They have the potential to enable design enhancements by providing information on the state of the armature and its relationship to the rail as it proceeds down the bore. To that end, the following was accomplished: (1) Optical fibers successfully delivered optical excitation and returned reflective and fluorescence signals as desired. (2) Luminescent coatings survived multiple firings--approximately 40 shots. (3) Optical triggering effectively synchronized an ultraviolet laser pulse to strike the moving armature. (4) Velocity measurements were successfully accomplished by either triggering on the armature front edge using two red diode lasers or by using a single laser and grooved marks a known distance apart on the armature surface. (5) Velocities ranged from 19 to 88 m/s. (6) Temperatures of 30 to 92 C were measured with a precision of about 2 C-: (a) This precision was achieved with a single laser shot and (b) Motion effect was observed but a methodology adequately corrected the result. The correction was only about 2 C. (7) Adequate signal-to-noise and measurement precision was achieved with a single laser shot.

Allison, Stephen W [ORNL; Cates, Michael R [ORNL; Goedeke, Shawn [ORNL; Crawford, M. T. [Institute for Advanced Technology, Austin, TX; Ferraro, S. B. [Institute for Advanced Technology, Austin, TX; Akerman, A. [Diditco, Inc., Knoxville

2005-03-01T23:59:59.000Z

408

Diagnostic resonant cavity for a charged particle accelerator  

DOE Patents (OSTI)

Disclosed is a diagnostic resonant cavity for determining characteristics of a charged particle beam, such as an electron beam, produced in a charged particle accelerator. The cavity is based on resonant quadrupole-mode and higher order cavities. Enhanced shunt impedance in such cavities is obtained by the incorporation of a set of four or more electrically conductive rods extending inwardly from either one or both of the end walls of the cavity, so as to form capacitive gaps near the outer radius of the beam tube. For typical diagnostic cavity applications, a five-fold increase in shunt impedance can be obtained. In alternative embodiments the cavity may include either four or more opposing pairs of rods which extend coaxially toward one another from the opposite end walls of the cavity and are spaced from one another to form capacitative gaps; or the cavity may include a single set of individual rods that extend from one end wall to a point adjacent the opposing end wall.

Barov, Nikolai (San Diego, CA)

2007-10-02T23:59:59.000Z

409

Ultrafast x-ray diagnostics for laser fusion experiments  

SciTech Connect

Temporally, spectrally, and spatially resolved x-ray emission diagnostics are important tools in the study of the heating and compression of laser fusion targets by sub-nanosecond laser pulses. The use of the Livermore 15 psec resolution x-ray streak camera to make such measurements is reviewed. Temporal histories of spectrally resolved x-ray emission in the 1 to 10 keV range have been obtained. These data have served to further define the x-ray streak camera as a quantative diagnostic tool and have also provided data relating to the absorption and compression phases of laser heating. The x-ray streak camera has been used in conjunction with a specially designed pinhole imaging system to temporally record images of laser compressed targets with a spatial resolution of approximately 6 ..mu..m. Implosion characteristics are presented for experiments with glass microshell targets. The concept, development, and testing of an ultrafast framing camera for full two-dimensional time resolved imaging is discussed. A prototype camera, based on the image dissection-restoration concept, has achieved an approximately 200 psec frame period with a resolution of 50 ..mu..m.

Coleman, L.W.

1976-08-16T23:59:59.000Z

410

DRIVEN WAVES AS A DIAGNOSTICS TOOL IN THE SOLAR CORONA  

SciTech Connect

Detecting the signature of Alfven waves in the solar atmosphere remains an observational challenge. At the same time, it could also be an important key to gaining critical understanding of the solar wind and especially of the near-Earth space weather formation. Here, we investigate the plausibility of using inhomogeneous flow-driven compressional fluctuations as a diagnostics tool for Alfven waves in the solar corona. The nature of the fluctuations driven by transverse Alfven waves in inhomogeneous flows was recently investigated by Kaghashvili et al., and analytical solutions that accurately link driven waves to the Alfvenic driver were found. The novelty of this mechanism is that the analysis of the detected compressional fluctuations can provide a clue about the Alfven waves that are otherwise difficult to detect. We review this physical process in a low-beta approximation relevant to solar coronal conditions and outline basic reasons why it can be one of the major processes that comes about as outflowing plasma emerges from divergent coronal holes. After establishing a quantitative link, we consider an example with coronal hole plasma parameters similar to the ones reported recently where evidence for Alfven waves in solar X-ray jets was discussed. We show how this diagnostics tool can be used to analyze the detected intensity fluctuations.

Kaghashvili, Edisher Kh.; Quinn, Richard A. [Atmospheric and Environmental Research, Inc., 131 Hartwell Avenue, Lexington, MA 02421 (United States); Hollweg, Joseph V., E-mail: ekaghash@aer.co [Space Science Center, University of New Hampshire, Durham, NH 03824 (United States)

2009-10-01T23:59:59.000Z

411

Polarimetry and Schlieren diagnostics of underwater exploding wires  

SciTech Connect

Nondisturbing laser-probing polarimetry (based on the Faraday and Kerr effects) and Schlieren diagnostics were used in the investigation of underwater electrical wire explosion. Measuring the polarization plane rotation angle of a probing laser beam due to the Faraday effect allows one to determine an axially resolved current flowing through the exploding wire, unlike commonly used current probes. This optical method of measuring current yields results that match those obtained using a current viewing resistor within an accuracy of 10%. The same optical setup allows simultaneous space-resolved measurement of the electric field using the Kerr effect. It was shown that the maximal amplitude of the electric field in the vicinity of the high-voltage electrode is approx80 kV/cm and that the radial electric field is <1 MV/cm during the wire explosion. Finally, it was shown that the use of Schlieren diagnostics allows one to obtain qualitatively the density distribution behind the shock wave front, which is important for the determination of the energy transfer from the discharge channel to the generated water flow.

Fedotov-Gefen, A. V.; Krasik, Ya. E. [Physics Department, Technion, 32000 Haifa (Israel)

2009-11-01T23:59:59.000Z

412

Index of /research/alcator/facility/Procedures/DIAGNOSTICS  

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

DIAGNOSTICS DIAGNOSTICS [ICO] Name Last modified Size Description [DIR] Parent Directory - [ ] DNB Emergency Off Procedures42208.pdf 22-Apr-2008 15:58 73K [ ] DNB Emergency Off Procedures reva.pdf 04-Dec-2008 07:02 74K [ ] DNB Interim Safety Procedures050608.pdf 06-May-2008 14:11 1.2M [ ] FIR Laser Pumpout Procedure Rev 1.00.pdf 23-Apr-2008 16:05 22K [ ] FIR Laser Startup Procedure Rev 1.00.pdf 23-Apr-2008 16:05 29K [ ] FIR Laser Venting Procedure Rev 1.00.pdf 23-Apr-2008 16:05 22K [ ] Safety procedure for deuterium DNB operation.pdf 09-Jul-2003 13:01 8.2K [TXT] Safety procedure for deuterium DNB operation.txt 09-Jul-2003 13:01 4.5K [ ] TCI Window Cleaning.pdf 07-May-2003 14:32 62K [TXT] TCI Window Cleaning.txt 06-May-2003 14:38 3.2K

413

Summary of On-Board Storage Models and Analyses  

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

On-Board Storage On-Board Storage Models and Analyses R.K. Ahluwalia, T. Q. Hua and J-K Peng Hydrogen Delivery Analysis Meeting FreedomCAR and Fuels Partnership Delivery, Storage and Hydrogen Pathways Tech Teams May 8-9, 2007 Columbia, MD 2 Objective: To determine the performance of the on-board system relative to the storage targets (capacity, efficiency, etc) 1. On-Board System Configuration 2. Dehydrogenation Reactor Dehydrogenation kinetics Trickle bed hydrodynamics Dehydrogenation reactor model Reactor performance with pelletized and supported catalysts 3. System Performance Storage efficiency Storage capacity On-Board Hydrogen Storage System with a Liquid Carrier 3 Fuel Cell System with H 2 Stored in a Liquid Carrier Enthalpy Wheel Spent H 2 Fuel cell Stack Stack Coolant

414

Airbags to Martian Landers: Analyses at Sandia National Laboratories  

SciTech Connect

A new direction for the national laboratories is to assist US business with research and development, primarily through cooperative research and development agreements (CRADAs). Technology transfer to the private sector has been very successful as over 200 CRADAs are in place at Sandia. Because of these cooperative efforts, technology has evolved into some new areas not commonly associated with the former mission of the national laboratories. An example of this is the analysis of fabric structures. Explicit analyses and expertise in constructing parachutes led to the development of a next generation automobile airbag; which led to the construction, testing, and analysis of the Jet Propulsion Laboratory Mars Environmental Survey Lander; and finally led to the development of CAD based custom garment designs using 3D scanned images of the human body. The structural analysis of these fabric structures is described as well as a more traditional example Sandia with the test/analysis correlation of the impact of a weapon container.

Gwinn, K.W.

1994-03-01T23:59:59.000Z

415

Large-Scale Analyses of Glycosylation in Cellulases  

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

Article Article Large-Scale Analyses of Glycosylation in Cellulases Fengfeng Zhou 1,2 , Victor Olman 1,2 , and Ying Xu 1,2 * 1 Computational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology / Institute of Bioinformatics, University of Georgia, Athens, GA 30602-7229, USA; 2 BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37830-8050, USA. *Corresponding author. E-mail: xyn@bmb.uga.edu DOI: 10.1016/S1672-0229(08)60049-2 Cellulases are important glycosyl hydrolases (GHs) that hydrolyze cellulose poly- mers into smaller oligosaccharides by breaking the cellulose β (1→4) bonds, and they are widely used to produce cellulosic ethanol from the plant biomass. N-linked and O-linked glycosylations were proposed to impact the catalytic ef f iciency, cel- lulose binding af f inity and the stability of cellulases based on observations

416

H2A Delivery Scenario Model and Analyses  

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

H2A Delivery Scenario Model H2A Delivery Scenario Model and Analyses Marianne Mintz and Jerry Gillette DOE Hydrogen Delivery Analysis and High Pressure Tanks R&D Project Review Meeting February 8, 2005 2 Pioneering Science and Technology Office of Science U.S. Department of Energy Topics * Delivery Scenarios - Current status - Future scenarios * Delivery Scenarios model - Approach - Structure - Current status - Results * Pipeline modeling - Approach - Key assumptions - Results * Next Steps 3 Pioneering Science and Technology Office of Science U.S. Department of Energy Delivery Scenarios 4 Pioneering Science and Technology Office of Science U.S. Department of Energy Three-Quarters of the US Population Reside in Urbanized Areas East of the Mississippi there are many large, proximate urban areas. In the West

417

RAPID RADIOCHEMICAL ANALYSES IN SUPPORT OF FUKUSHIMA NUCLEAR ACCIDENT  

Science Conference Proceedings (OSTI)

There is an increasing need to develop faster analytical methods for emergency response, including emergency soil and air filter samples. The Savannah River National Laboratory (SRNL) performed analyses on samples received from Japan in April, 2011 as part of a U.S. Department of Energy effort to provide assistance to the government of Japan, following the nuclear event at Fukushima Daiichi, resulting from the earthquake and tsunami on March 11, 2011. Of particular concern was whether it was safe to plant rice in certain areas (prefectures) near Fukushima. The primary objectives of the sample collection, sample analysis, and data assessment teams were to evaluate personnel exposure hazards, identify the nuclear power plant radiological source term and plume deposition, and assist the government of Japan in assessing any environmental and agricultural impacts associated with the nuclear event. SRNL analyzed approximately 250 samples and reported approximately 500 analytical method determinations. Samples included soil from farmland surrounding the Fukushima reactors and air monitoring samples of national interest, including those collected at the U.S. Embassy and American military bases. Samples were analyzed for a wide range of radionuclides, including strontium-89, strontium-90, gamma-emitting radionuclides, and plutonium, uranium, americium and curium isotopes. Technical aspects of the rapid soil and air filter analyses will be described. The extent of radiostrontium contamination was a significant concern. For {sup 89,90}Sr analyses on soil samples, a rapid fusion technique using 1.5 gram soil aliquots to enable a Minimum Detectable Activity (MDA) of calcium fluoride precipitations, followed by Sr-Resin separation and gas flow proportional counting. To achieve a lower detection limit for analysis of some of the Japanese soil samples, a 10 gram aliquot of soil was taken, acid-leached and processed with similar preconcentration chemistry. The MDA using this approach was ~0.03 pCi/g (1.1 mBq/g)/, which is less than the 0.05-0.10 pCi/g {sup 90}Sr levels found in soil as a result of global fallout. The chemical yields observed for the Japanese soil samples was typically 75-80% and the laboratory control sample (LCS) and matrix spike (MS) results looked very good for this work Individual QC results were well within the ± 25% acceptable range and the average of these results does not show significant bias. Additional data for a radiostrontium in soil method for 50 gram samples will also be presented, which appears to be a significant step forward based on looking at the current literature, with higher chemical yields for even larger sample aliquots and lower MDA. Hou et al surveyed a wide range of separation methods for Pu in waters and environmental solid samples. While there are many actinide methods in the scientific literature, few would be considered rapid due to the tedious and time-consuming steps involved. For actinide analyses in soil, a new rapid method for the determination of actinide isotopes in soil samples using both alpha spectrometry and inductively-coupled plasma mass spectrometry was employed. The new rapid soil method utilizes an acid leaching method, iron/titanium hydroxide precipitation, a lanthanum fluoride soil matrix removal step, and a rapid column separation process with TEVA Resin. The large soil matrix is removed easily and rapidly using these two simple precipitations with high chemical recoveries and effective removal of interferences. Vacuum box technology and rapid flow rates were used to reduce analytical time. Challenges associated with the mineral content in the volcanic soil will be discussed. Air filter samples were reported within twenty-four (24) hours of receipt using rapid techniques published previously. The r

Maxwell, S.

2012-11-07T23:59:59.000Z

418

Uncertainty quantification and validation of combined hydrological and macroeconomic analyses.  

SciTech Connect

Changes in climate can lead to instabilities in physical and economic systems, particularly in regions with marginal resources. Global climate models indicate increasing global mean temperatures over the decades to come and uncertainty in the local to national impacts means perceived risks will drive planning decisions. Agent-based models provide one of the few ways to evaluate the potential changes in behavior in coupled social-physical systems and to quantify and compare risks. The current generation of climate impact analyses provides estimates of the economic cost of climate change for a limited set of climate scenarios that account for a small subset of the dynamics and uncertainties. To better understand the risk to national security, the next generation of risk assessment models must represent global stresses, population vulnerability to those stresses, and the uncertainty in population responses and outcomes that could have a significant impact on U.S. national security.

Hernandez, Jacquelynne; Parks, Mancel Jordan; Jennings, Barbara Joan; Kaplan, Paul Garry; Brown, Theresa Jean; Conrad, Stephen Hamilton

2010-09-01T23:59:59.000Z

419

Indirect detections and analyses of GRBs by ionospheric response  

SciTech Connect

We report on the independent and indirect detection of GRBs by their ionospheric response (SID--Sudden Ionospheric Disturbance) observed at VLF (Very Low Frequency), and discus its possible impact on GRB science and investigations in general. Although few such detections have been already reported in the past, the capability of such alternative and indirect investigations of GRBs still remains to be investigated in more details. We present and discuss examples of such VLF/SID detection of GRBs 060124A, GRB080319D a GRB080320A. A network of SID monitors has been created and is operated to detect more GRBs. The importance of these detections for GRB analyses and GRB science in general is still to be further and in full detail exploited. Some possible outcomes in this direction will be outlined and discussed.

Slosiar, R. [Partizanske Observatory, Amateur Astronomer, Bojnice (Slovakia); Hudec, R. [Astronomical Institute, Academy of Sciences of the Czech Republic, 251 65 Ondrejov, Czech Republic and Czech Technical University in Prague, Faculty of Elctrical Engineering, Prague (Czech Republic)

2009-05-25T23:59:59.000Z

420

Indirect detections and analyses of GRBs by ionospheric response  

SciTech Connect

We present and discuss the independent and indirect detection of GRBs by their ionospheric response (SID--Sudden Ionospheric Disturbance) observed at VLF (Very Low Frequency), and evaluate its possible impact on GRB science and investigations in general. Although few such detections have been already reported in the past, the capability of such alternative and indirect investigations of GRBs still remains to be investigated in more details. We present and discuss examples of such VLF/SID detection of GRBs 060124A, GRB080319D a GRB080320A. A network of SID monitors has been created and is operated to detect more GRBs. The importance of these detections for GRB analyses and GRB science in general is still to be further and in full detail exploited.

Hudec, Rene [Astronomical Institute, AS CR, 25165 Ondrejov (Czech Republic); Czech Technical University in Prague, Faculty of Electrical Engineering, Prague (Czech Republic); Slosiar, Rudolf [Bojnice and Partizanske Observatory (Slovakia)

2010-07-15T23:59:59.000Z

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421

EIA- Energy Efficiency Related Links: EIA Reports and Analyses  

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

Reports Reports Energy-Efficiency Related: EIA Reports and Analyses Released Release Date: October 1999 Last Updated: August 2010 End Users: Commercial Buildings / Manufacturing / Residential / Transportation Energy Source: Coal / Electricity / Natural Gas / Nuclear / Petroleum / Renewable / All Sectors Commercial Buildings 2003 CBECS Detailed Tables, most recent data on building characteristics and consumption expenditures 2003 Building Characteristics Overview, the Commercial Buildings Energy Consumption Survey (CBECS) estimates that there were nearly 4.9 million commercial buildings and more than 71.6 billion square feet of commercial floorspace in the U. S. in 2003 1999 Building Characteristics Overview, the 1999 CBECS collected information about HVAC (heating, ventilation, and air-conditioning) system, building shell, and lighting conservation features and practices plus information on off-hour reduction of end-use equipment. In general, commercial buildings that were larger than average were more likely to have used these conservation features or measures (May 2002)

422

Guide to good practices for teamwork training and diagnostic skills development  

SciTech Connect

This guide provides assistance in the development, implementation, and improvement of training on teamwork and diagnostics. DOE and contractor representatives identified the need for teamwork and diagnostics training guidance. This need was based on the increasing emphasis of properly applying knowledge and skills to complete assigned tasks. Teamwork and diagnostic skills have become a focal point because of the impact they have on effective facility operation and safety.

NONE

1997-06-01T23:59:59.000Z

423

TERMOD 2; an interactive code for analysing intake of radionuclides by man through terrestrial pathways  

E-Print Network (OSTI)

TERMOD 2; an interactive code for analysing intake of radionuclides by man through terrestrial pathways

Zach, R

1978-01-01T23:59:59.000Z

424

Real-time Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor  

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

Combustion Control and Diagnostics Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing its patented "Real-Time Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor" technology. Disclosed is NETL's sensor system and process for monitoring and controlling the amplitude and/or frequencies of dynamic pressure oscillations in combustion systems during active combustion processes. The combustion control and diagnostics sensor (CCADS) is designed for gas turbine combustors that are operated near the fuel-lean flame extinction limit to minimize production of the atmospheric pollutant NOx. CCADS eliminates the problems of flashback,

425

A Non-Invasive Energy/Angle Diagnostic for Charged Particle Beams  

Science Conference Proceedings (OSTI)

A diagnostic for charged particle beams based on Compton scattering is presented. The particular case of an electron beam is treated in detail relativistically.

Christensen, C. R.

2012-03-16T23:59:59.000Z

426

Study on the feasibility of using electromagnetic methods for fracture diagnostics.  

E-Print Network (OSTI)

??This thesis explores two ways of developing a fracture diagnostics tool capable of estimating hydraulic fracture propped length and orientation. Both approaches make use of… (more)

Saliés, Natália Gastão

2012-01-01T23:59:59.000Z

427

IN SITU INFRARED DIAGNOSTICS FOR A MICRO-SCALE COMBUSTION REACTOR.  

E-Print Network (OSTI)

??The development of centimeter to millimeter scale engines and power supplies have created a need for micro-scale combustion diagnostics. Fuel concentrations, product concentrations, and temperature… (more)

Heatwole, Scott

2004-01-01T23:59:59.000Z

428

Methodology for fault detection and diagnostics in an ocean turbine using vibration analysis and modeling.  

E-Print Network (OSTI)

??This thesis describes a methodology for mechanical fault detection and diagnostics in an ocean turbine using vibration analysis and modeling. This methodology relies on the… (more)

Mjit, Mustapha.

2009-01-01T23:59:59.000Z

429

Guidelines on Airflow and Refrigerant Charge Verification and Diagnostics  

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

GUIDELINES ON AIRFLOW AND GUIDELINES ON AIRFLOW AND REFRIGERANT CHARGE VERIFICATION AND DIAGNOSTICS Alliance for Residential Building Innovation David Springer, Davis Energy Group Context  Airflow and refrigerant charge defects in existing air conditioning systems are well documented  Failure to address these problems represents a missed opportunity for home performance contractors  To ensure cost-effective solutions, a systematic approach is needed to quickly and accurately diagnose and resolve problems  Target:  Home performance contractors  HVAC contractors & technicians The Impact of Defects Non-TXV TXV 15% duct leakage 1 -18.10% 23% low airflow -4.70% 50% condenser coil blockage -5.80% 50% evaporator coil blockage 2 -4.60% -4.20% 20% overcharge -3.50% -7.90%

430

Encoding expert knowledge: A Bayesian diagnostic system for diesel generators  

Science Conference Proceedings (OSTI)

Developing computer systems to capture the knowledge of human experts offers new opportunities to electric utilities. Such systems become particularly attractive when technical expertise resides within a single individual, possibly nearing retirement, who has not otherwise passed along his important knowledge and though processes. An expert system model called the Bayesian diagnostic module (BMD) has been developed to aid plant personnel in diagnosing the causes of equipment failure. The BDM deals with uncertainty in a mathematically logical and rigorous way. If sufficient observables are provided as input, it can identify a single cause of failure with very high confidence. Given less complete information, the method degrades gracefully by advising operators about alternative causes of failure, including as estimate of the likelihood that each cause is the correct one. The complete theoretical foundation of the BDM is briefly summarized in this paper.

Bley, D.C.

1991-01-01T23:59:59.000Z

431

LANL spinoff receives NIH grant for respiratory disease diagnostic device  

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

LANL spinoff receives NIH grant LANL spinoff receives NIH grant LANL spinoff receives NIH grant for respiratory disease diagnostic device Mesa Tech has been awarded a grant to develop an inexpensive, instrument-free, nucleic-acid testing device to diagnose various respiratory diseases in record time. October 19, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy

432

An interference wiggler for precise diagnostics of electron beam energy  

SciTech Connect

Relativistic electrons passing through two identical magnetic sections generate synchrotron radiation whose spectrum is strongly modulated as the photon energy varies. The modulation is caused by the interference of radiation from each section, and has been observed in the spectrum of spontaneous radiation from transverse optical klystron which utilizes two undulators. In this paper, another device based on two simple wigglers is analyzed. The device, which will be called the interference wiggler, can be used for precise diagnostics of electron beam energy; by analyzing the modulated spectrum with a monochromator, the electron energy can be determined up to an accuracy of 10/sup -3/ or 10/sup -4/. General design criteria for interference wigglers are developed. Several example designs are given for measurement of the electron energy for the planned electron beam facility at CEBAF for the 1 to 2 GeV Light Source at Berkeley.

Kim, Kwang-Je

1987-03-01T23:59:59.000Z

433

Mach-Zehnder Recording Systems for Pulsed Power Diagnostics  

Science Conference Proceedings (OSTI)

Fiber-optic transmission and recording systems, based on Mach-Zehnder modulators, have been developed and installed at the National Ignition Facility (NIF), and are being developed for other pulsed-power facilities such as Z-R at Sandia, with different requirements. We present the design and performance characteristics for the mature analog links, based on the system developed for the Gamma Reaction History (GRH) diagnostic at OMEGA and NIF. For a single detector channel, two Mach-Zehnders are used to provide high dynamic range at the full recording bandwidth with no gaps in the coverage. We present laboratory and shot data to estimate upper limits on the radiation effects as they impact recorded data quality. Finally, we will assess the technology readiness level for mature and developing implementations of Mach-Zehnder links for these environments.

Miller, E K; McKenna, I; Macrum, G; Baker, D; Tran, V; Rodriguez, E; Kaufman, M I; Tibbits, A; Silbernagel, C T; Waltman, T B; Herrmann, H W; Kim, Y H; Mack, J M; Young, C S; Caldwell, S E; Evans, S C; Sedillo, T J; Stoeffl, W; Grafil, E; Liebman, J; Beeman, B; Watts, P; Carpenter, A; Horsfied, C J; Rubery, M S; Chandler, G A; Torres, J A

2012-10-01T23:59:59.000Z

434

Mach-Zehnder recording systems for pulsed power diagnostics  

Science Conference Proceedings (OSTI)

Fiber-optic transmission and recording systems, based on Mach-Zehnder modulators, have been developed and installed at the National Ignition Facility (NIF), and are being developed for other pulsed-power facilities such as the Z accelerator at Sandia, with different requirements. We present the design and performance characteristics for the mature analog links, based on the system developed for the Gamma Reaction History diagnostic at the OMEGA laser and at NIF. For a single detector channel, two Mach-Zehnders are used to provide high dynamic range at the full recording bandwidth with no gaps in the coverage. We present laboratory and shot data to estimate upper limits on the radiation effects as they impact recorded data quality. Finally, we will assess the technology readiness level for mature and developing implementations of Mach-Zehnder links for these environments.

Miller, E. K.; Abbott, R. Q.; McKenna, I.; Macrum, G.; Baker, D.; Tran, V.; Rodriguez, E.; Kaufman, M. I.; Tibbits, A.; Silbernagel, C. T.; Waltman, T. B. [National Security Technologies, LLC, Santa Barbara and Livermore, California 93111 (United States); National Security Technologies, LLC, Los Alamos, New Mexico 87544 (United States); and National Security Technologies, LLC, North Las Vegas, Nevada 89193 (United States); Herrmann, H. W.; Kim, Y. H.; Mack, J. M.; Young, C. S.; Caldwell, S. E.; Evans, S. C.; Sedillo, T. J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Stoeffl, W.; Grafil, E. [Lawrence Livermore National Laboratory, Livermore, California (United States); and others

2012-10-15T23:59:59.000Z

435

Effects of photon escape on diagnostic diagrams for HII regions  

E-Print Network (OSTI)

In this article we first outline the mounting evidence that a significant fraction of the ionizing photons emitted by OB stars within HII regions escape from their immediate surroundings and explain how an HII region structure containing high density contrast in homogeneities facilitates this escape. Next we describe sets of models containing inhomogeneities which are used to predict tracks in the commonly used diagnostic diagrams (based on ratios of emission lines) whose only independent variable is the photon escape fraction, xi. We show that the tracks produced by the models in two of the most cited of these diagrams conform well to the distribution of observed data points, with the models containing optically thick inhomogeneities ("CLUMPY" models) yielding somewhat better agreement than those with optically thin inhomogeneities ("FF" models). We show how variations in the ionization parameter U, derived from emission line ratios, could be due to photon escape. Using a rather wide range of assumptions abo...

Giammanco, C; Cedres, B

2005-01-01T23:59:59.000Z

436

Statefinder Diagnostic for Born-Infeld Type Dark Energy Model  

E-Print Network (OSTI)

Using a new method--statefinder diagnostic which can differ one dark energy model from the others, we investigate in this letter the dynamics of Born-Infeld(B-I) type dark energy model. The evolutive trajectory of B-I type dark energy with Mexican hat potential model with respect to $e-folding$ time $N$ is shown in the $r(s)$ diagram. When the parameter of noncanonical kinetic energy term $\\eta\\to0$ or kinetic energy $\\dot{\\phi}^2\\to0$, B-I type dark energy(K-essence) model reduces to Quintessence model or $\\Lambda$CDM model corresponding to the statefinder pair $\\{r, s\\}$=$\\{1, 0\\}$ respectively. As a result, the the evolutive trajectory of our model in the $r(s)$ diagram in Mexican hat potential is quite different from those of other dark energy models.

Z. G. Huang; H. Q. Lu

2008-02-16T23:59:59.000Z

437

Broadband notch filter design for millimeter-wave plasma diagnostics  

Science Conference Proceedings (OSTI)

Notch filters are integrated in plasma diagnostic systems to protect millimeter-wave receivers from intensive stray radiation. Here we present a design of a notch filter with a center frequency of 140 GHz, a rejection bandwidth of {approx}900 MHz, and a typical insertion loss below 2 dB in the passband of {+-}9 GHz. The design is based on a fundamental rectangular waveguide with eight cylindrical cavities coupled by T-junction apertures formed as thin slits. Parameters that affect the notch performance such as physical lengths and conductor materials are discussed. The excited resonance mode in the cylindrical cavities is the fundamental TE{sub 11}. The performance of the constructed filter is measured using a vector network analyzer monitoring a total bandwidth of 30 GHz. We compare the measurements with numerical simulations.

Furtula, V.; Michelsen, P. K.; Leipold, F.; Salewski, M.; Korsholm, S. B.; Meo, F.; Nielsen, S. K.; Stejner, M.; Moseev, D. [Association Euratom-Risoe National Laboratory for Sustainable Energy, Technical University of Denmark, DK-4000 Roskilde (Denmark); Johansen, T. [DTU Elektro, Technical University of Denmark, DK-2800 Lyngby (Denmark)

2010-10-15T23:59:59.000Z

438

Low-noise photodiode detector for optical fluctuation diagnostics  

SciTech Connect

The beam emission spectroscopy optical fluctuation diagnostic requires the highest possible quantum efficiency detector at 656 nm to minimize the photon statistical baseline limit to the detectable fluctuation level. A photoconductive photodiode detector with an extremely low-noise preamplifier and a reactive feedback circuit provides quantum efficiencies up to 70%--80% for a useful frequency range of at least 0--150 kHz with incident powers of {similar to}10 nW. The diodes are chosen for negligible leakage current and hence do not require active cooling. These detectors have provided increase in the sensitivity to plasma fluctuation amplitude by a factor of {similar to}14 over photomultipliers and a factor of 4 over large area avalanche photodiodes.

Fonck, R.J.; Ashley, R.; Durst, R. (Department of Nuclear Engineering and Engineering Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)); Paul, S.F.; Renda, G. (Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States))

1992-10-01T23:59:59.000Z

439

Optimization of plasma diagnostics using Bayesian probability theory  

SciTech Connect

The diagnostic set-up for Wendelstein 7-X, a magnetic fusion device presently under construction, is currently in the design process to optimize the outcome under given technical constraints. Compared to traditional design approaches, Bayesian Experimental Design (BED) allows to optimize with respect to physical motivated design criterions. It aims to find the optimal design by maximizing an expected utility function that quantifies the goals of the experiment. The expectation marginalizes over the uncertain physical parameters and the possible values of future data. The approach presented here bases on maximization of an information measure (Kullback-Leibler entropy). As an example, the optimization of an infrared multichannel interferometer is shown in detail. Design aspects like the impact of technical restrictions are discussed.

Dreier, H.; Dinklage, A.; Hirsch, M.; Kornejew, P. [Max-Planck-Institut fuer Plasmaphysik, EURATOM-Association, Wendelsteinstr. 1, 17491 Greifswald (Germany); Fischer, R. [Boltzmannstr. 2, 85748 Garching (Germany)

2006-11-29T23:59:59.000Z

440

DESIGN OF VISIBLE DIAGNOSTIC BEAMLINE FOR NSLS2 STORAGE RING  

SciTech Connect

A visible synchrotron light monitor (SLM) beam line has been designed at the NSLS2 storage ring, using the bending magnet radiation. A retractable thin absorber will be placed in front of the first mirror to block the central x-rays. The first mirror will reflect the visible light through a vacuum window. The light is guided by three 6-inch diameter mirrors into the experiment hutch. In this paper, we will describe design work on various optical components in the beamline. The ultra high brightness NSLS-II storage ring is under construction at Brookhaven National Laboratory. It will have 3GeV, 500mA electron beam circulating in the 792m ring, with very low emittance (0.9nm.rad horizontal and 8pm.rad vertical). The ring is composed of 30 DBA cells with 15 fold symmetry. Three damping wigglers will be installed in long straight sections 8, 18 and 28 to lower the emittance. While electrons pass through the bending magnet, synchrotron radiation will be generated covering a wide spectrum. There are other insertion devices in the storage ring which will generate shorter wavelength radiation as well. Synchrotron radiation has been widely used as diagnostic tool to measure the transverse and longitudinal profile. Three synchrotron light beam lines dedicated for diagnostics are under design and construction for the NSLS-II storage ring: two x-ray beam lines (pinhole and CRL) with the source points from Cell 22 BM{_}A (first bending in the DBA cell) and Cell22 three-pole wiggler; the third beam line is using visible part of radiation from Cell 30 BM{_}B (second bending magnet from the cell). Our paper focuses on the design of the visible beam line - SLM.

Cheng, W.; Fernandes, H.; Hseuh, H.; Kosciuk, B.; Krinsky, S.; Singh, O.

2011-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Summary of Fast Pyrolysis and Upgrading GHG Analyses  

SciTech Connect

The Energy Independence and Security Act (EISA) of 2007 established new renewable fuel categories and eligibility requirements (EPA 2010). A significant aspect of the National Renewable Fuel Standard 2 (RFS2) program is the requirement that the life cycle greenhouse gas (GHG) emissions of a qualifying renewable fuel be less than the life cycle GHG emissions of the 2005 baseline average gasoline or diesel fuel that it replaces. Four levels of reduction are required for the four renewable fuel standards. Table 1 lists these life cycle performance improvement thresholds. Table 1. Life Cycle GHG Thresholds Specified in EISA Fuel Type Percent Reduction from 2005 Baseline Renewable fuel 20% Advanced biofuel 50% Biomass-based diesel 50% Cellulosic biofuel 60% Notably, there is a specialized subset of advanced biofuels that are the cellulosic biofuels. The cellulosic biofuels are incentivized by the Cellulosic Biofuel Producer Tax Credit (26 USC 40) to stimulate market adoption of these fuels. EISA defines a cellulosic biofuel as follows (42 USC 7545(o)(1)(E)): The term “cellulosic biofuel” means renewable fuel derived from any cellulose, hemicellulose, or lignin that is derived from renewable biomass and that has lifecycle greenhouse gas emissions, as determined by the Administrator, that are at least 60 percent less than the baseline lifecycle greenhouse gas emissions. As indicated, the Environmental Protection Agency (EPA) has sole responsibility for conducting the life cycle analysis (LCA) and making the final determination of whether a given fuel qualifies under these biofuel definitions. However, there appears to be a need within the LCA community to discuss and eventually reach consensus on discerning a 50–59 % GHG reduction from a ? 60% GHG reduction for policy, market, and technology development. The level of specificity and agreement will require additional development of capabilities and time for the sustainability and analysis community, as illustrated by the rich dialogue and convergence around the energy content and GHG reduction of cellulosic ethanol (an example of these discussions can be found in Wang 2011). GHG analyses of fast pyrolysis technology routes are being developed and will require significant work to reach the levels of development and maturity of cellulosic ethanol models. This summary provides some of the first fast pyrolysis analyses and clarifies some of the reasons for differing results in an effort to begin the convergence on assumptions, discussion of quality of models, and harmonization.

Snowden-Swan, Lesley J.; Male, Jonathan L.

2012-12-07T23:59:59.000Z

442

ARM - Measurement - Advective tendency  

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

govMeasurementsAdvective tendency govMeasurementsAdvective tendency 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 : Advective tendency The large-scale advective tendency of temperature and moisture used to force SCMs and CSRMs, derived from constrained variational analysis. Categories Atmospheric State 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. External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model

443

ARM - Measurement - Surface albedo  

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

albedo albedo 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 : Surface albedo The fraction of incoming solar radiation at a surface (i.e. land, cloud top) that is effectively reflected by that surface. Categories Surface Properties 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 External Instruments ETA : Eta Model Runs ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model

444

Assimilation of Screen-Level Variables in ECMWF’s Integrated Forecast System: A Study on the Impact on the Forecast Quality and Analyzed Soil Moisture  

Science Conference Proceedings (OSTI)

In many operational numerical weather prediction applications, the soil moisture analysis is based on the modeled first-guess and screen-level variables; that is, 2-m temperature and 2-m relative humidity. A set of two global 61-day analysis/...

Matthias Drusch; Pedro Viterbo

2007-02-01T23:59:59.000Z

445

RAPID RADIOCHEMICAL ANALYSES IN SUPPORT OF FUKUSHIMA NUCLEAR ACCIDENT  

SciTech Connect

There is an increasing need to develop faster analytical methods for emergency response, including emergency soil and air filter samples. The Savannah River National Laboratory (SRNL) performed analyses on samples received from Japan in April, 2011 as part of a U.S. Department of Energy effort to provide assistance to the government of Japan, following the nuclear event at Fukushima Daiichi, resulting from the earthquake and tsunami on March 11, 2011. Of particular concern was whether it was safe to plant rice in certain areas (prefectures) near Fukushima. The primary objectives of the sample collection, sample analysis, and data assessment teams were to evaluate personnel exposure hazards, identify the nuclear power plant radiological source term and plume deposition, and assist the government of Japan in assessing any environmental and agricultural impacts associated with the nuclear event. SRNL analyzed approximately 250 samples and reported approximately 500 analytical method determinations. Samples included soil from farmland surrounding the Fukushima reactors and air monitoring samples of national interest, including those collected at the U.S. Embassy and American military bases. Samples were analyzed for a wide range of radionuclides, including strontium-89, strontium-90, gamma-emitting radionuclides, and plutonium, uranium, americium and curium isotopes. Technical aspects of the rapid soil and air filter analyses will be described. The extent of radiostrontium contamination was a significant concern. For {sup 89,90}Sr analyses on soil samples, a rapid fusion technique using 1.5 gram soil aliquots to enable a Minimum Detectable Activity (MDA) of <1 pCi {sup 89,90} Sr /g of soil was employed. This sequential technique has been published recently by this laboratory for actinides and radiostrontium in soil and vegetation. It consists of a rapid sodium hydroxide fusion, pre-concentration steps using iron hydroxide and calcium fluoride precipitations, followed by Sr-Resin separation and gas flow proportional counting. To achieve a lower detection limit for analysis of some of the Japanese soil samples, a 10 gram aliquot of soil was taken, acid-leached and processed with similar preconcentration chemistry. The MDA using this approach was ~0.03 pCi/g (1.1 mBq/g)/, which is less than the 0.05-0.10 pCi/g {sup 90}Sr levels found in soil as a result of global fallout. The chemical yields observed for the Japanese soil samples was typically 75-80% and the laboratory control sample (LCS) and matrix spike (MS) results looked very good for this work Individual QC results were well within the ± 25% acceptable range and the average of these results does not show significant bias. Additional data for a radiostrontium in soil method for 50 gram samples will also be presented, which appears to be a significant step forward based on looking at the current literature, with higher chemical yields for even larger sample aliquots and lower MDA. Hou et al surveyed a wide range of separation methods for Pu in waters and environmental solid samples. While there are many actinide methods in the scientific literature, few would be considered rapid due to the tedious and time-consuming steps involved. For actinide analyses in soil, a new rapid method for the determination of actinide isotopes in soil samples using both alpha spectrometry and inductively-coupled plasma mass spectrometry was employed. The new rapid soil method utilizes an acid leaching method, iron/titanium hydroxide precipitation, a lanthanum fluoride soil matrix removal step, and a rapid column separation process with TEVA Resin. The large soil matrix is removed easily and rapidly using these two simple precipitations with high chemical recoveries and effective removal of interferences. Vacuum box technology and rapid flow rates were used to reduce analytical time. Challenges associated with the mineral content in the volcanic soil will be discussed. Air filter samples were reported within twenty-four (24) hours of receipt using rapid techniques published previously. The r

Maxwell, S.

2012-11-07T23:59:59.000Z

446

Energy Efficiency and Environmental Impact Analyses of Supermarket Refrigeration Systems  

SciTech Connect

This paper presents energy and life cycle climate performance (LCCP) analyses of a variety of supermarket refrigeration systems to identify designs that exhibit low environmental impact and high energy efficiency. EnergyPlus was used to model refrigeration systems in a variety of climate zones across the United States. The refrigeration systems that were modeled include the traditional multiplex DX system, cascade systems with secondary loops and the transcritical CO2 system. Furthermore, a variety of refrigerants were investigated, including R-32, R-134a, R-404A, R-1234yf, R-717, and R-744. LCCP analysis was used to determine the direct and indirect carbon dioxide emissions resulting from the operation of the various refrigeration systems over their lifetimes. Our analysis revealed that high-efficiency supermarket refrigeration systems may result in up to 44% less energy consumption and 78% reduced carbon dioxide emissions compared to the baseline multiplex DX system. This is an encouraging result for legislators, policy makers and supermarket owners to select low emission, high-efficiency commercial refrigeration system designs for future retrofit and new projects.

Fricke, Brian A [ORNL; Bansal, Pradeep [ORNL; Zha, Shitong [Hillphoenix

2013-01-01T23:59:59.000Z

447

Event group importance measures for top event frequency analyses  

SciTech Connect

Three traditional importance measures, risk reduction, partial derivative, nd variance reduction, have been extended to permit analyses of the relative importance of groups of underlying failure rates to the frequencies of resulting top events. The partial derivative importance measure was extended by assessing the contribution of a group of events to the gradient of the top event frequency. Given the moments of the distributions that characterize the uncertainties in the underlying failure rates, the expectation values of the top event frequency, its variance, and all of the new group importance measures can be quantified exactly for two familiar cases: (1) when all underlying failure rates are presumed independent, and (2) when pairs of failure rates based on common data are treated as being equal (totally correlated). In these cases, the new importance measures, which can also be applied to assess the importance of individual events, obviate the need for Monte Carlo sampling. The event group importance measures are illustrated using a small example problem and demonstrated by applications made as part of a major reactor facility risk assessment. These illustrations and applications indicate both the utility and the versatility of the event group importance measures.

NONE

1995-07-31T23:59:59.000Z

448

Integrated model-based control and diagnostic monitoring for automotive catalyst systems  

Science Conference Proceedings (OSTI)

An integrated model-based automotive catalyst control and diagnostic monitoring system is presented. This system incorporates a simplified dynamic catalyst model that describes oxygen storage and release in the catalyst and predicts the post-catalyst ... Keywords: automotive catalyst, model predictive control, on-board diagnostic monitoring

Kenneth R. Muske; James C. Peyton Jones

2007-11-01T23:59:59.000Z

449

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Massieh Najafi1  

E-Print Network (OSTI)

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Massieh Najafi1 , David for determining HVAC diagnostics, methods to detect faults in HVAC systems are still generally undeveloped. Most in a substantial increase in energy use. For example, failure of an HVAC fan may prevent cool air from one

450

Use of the target diagnostic control system in the National Ignition Facility  

SciTech Connect

The extreme physics of targets shocked by NIF's 192-beam laser are observed by a diverse suite of diagnostics including optical backscatter, time-integrated, time resolved and gated X-ray sensors, laser velocity interferometry, and neutron time of flight. Diagnostics to diagnose fusion ignition implosion and neutron emissions have been developed. A Diagnostic Control System (DCS) for both hardware and software facilitates development and eases integration. Each complex diagnostic typically uses an ensemble of electronic instruments attached to sensors, digitizers, cameras, and other devices. In the DCS architecture each instrument is interfaced to a low-cost Window XP processor and Java application. Instruments are aggregated as needed in the supervisory system to form an integrated diagnostic. The Java framework provides data management, control services and operator GUI generation. During the past several years, over thirty-six diagnostics have been deployed using this architecture in support of the National Ignition Campaign (NIC). The DCS architecture facilitates the expected additions and upgrades to diagnostics as more experiments are performed. This paper presents the DCS architecture, framework and our experiences in using it during the NIC to operate, upgrade and maintain a large set of diagnostic instruments.

Shelton, R; Lagin, L; Nelson, J

2011-07-25T23:59:59.000Z

451

Target diagnostic control system implementation for the National Ignition Facility (invited)  

Science Conference Proceedings (OSTI)

The extreme physics of targets shocked by NIF's 192-beam laser is observed by a diverse suite of diagnostics. Many diagnostics are being developed by collaborators at other sites, but ad hoc controls could lead to unreliable and costly operations. A diagnostic control system (DCS) framework for both hardware and software facilitates development and eases integration. Each complex diagnostic typically uses an ensemble of electronic instruments attached to sensors, digitizers, cameras, and other devices. In the DCS architecture each instrument is interfaced to a low-cost WINDOWS XP processor and JAVA application. Each instrument is aggregated with others as needed in the supervisory system to form an integrated diagnostic. The JAVA framework provides data management, control services, and operator graphical user interface generation. DCS instruments are reusable by replication with reconfiguration for specific diagnostics in extensible markup language. Advantages include minimal application code, easy testing, and high reliability. Collaborators save costs by assembling diagnostics with existing DCS instruments. This talk discusses target diagnostic instrumentation used on NIF and presents the DCS architecture and framework.

Shelton, R. T.; Kamperschroer, J. H.; Lagin, L. J.; Nelson, J. R.; O'Brien, D. W. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2010-10-15T23:59:59.000Z

452

Target Diagnostic Instrument-Based Controls Framework for the National Ignition Facility (NIF)  

Science Conference Proceedings (OSTI)

The extreme physics of targets shocked by NIF's 192-beam laser are observed by a diverse suite of diagnostics including optical backscatter, time-integrated and gated X-ray sensors, and laser velocity interferometry. Diagnostics to diagnose fusion ignition implosion and neutron emissions are being planned. Many diagnostics will be developed by collaborators at other sites, but ad hoc controls could lead to unreliable and costly operations. An instrument-based controls (I-BC) framework for both hardware and software facilitates development and eases integration. Each complex diagnostic typically uses an ensemble of electronic instruments attached to sensors, digitizers, cameras, and other devices. In the I-BC architecture each instrument is interfaced to a low-cost Windows XP processor and Java application. Each instrument is aggregated with others as needed in the supervisory system to form an integrated diagnostic. The Java framework provides data management, control services and operator GUI generation. I-BCs are reusable by replication and reconfiguration for specific diagnostics in XML. Advantages include minimal application code, easy testing, and better reliability. Collaborators save costs by assembling diagnostics with existing I-BCs. This paper discusses target diagnostic instrumentation used on NIF and presents the I-BC architecture and framework.

Shelton, R T; O'Brien, D W; Kamperschroer, J H; Nelson, J R

2007-10-03T23:59:59.000Z

453

Description of Transmutation Library for Fuel Cycle System Analyses  

SciTech Connect

This report documents the Transmutation Library that is used in Fuel Cycle System Analyses. This version replaces the 2008 version.[Piet2008] The Transmutation Library has the following objectives: • Assemble past and future transmutation cases for system analyses. • For each case, assemble descriptive information such as where the case was documented, the purpose of the calculation, the codes used, source of feed material, transmutation parameters, and the name of files that contain raw or source data. • Group chemical elements so that masses in separation and waste processes as calculated in dynamic simulations or spreadsheets reflect current thinking of those processes. For example, the CsSr waste form option actually includes all Group 1A and 2A elements. • Provide mass fractions at input (charge) and output (discharge) for each case. • Eliminate the need for either “fission product other” or “actinide other” while conserving mass. Assessments of waste and separation cannot use “fission product other” or “actinide other” as their chemical behavior is undefined. • Catalog other isotope-specific information in one place, e.g., heat and dose conversion factors for individual isotopes. • Describe the correlations for how input and output compositions change as a function of UOX burnup (for LWR UOX fuel) or fast reactor (FR) transuranic (TRU) conversion ratio (CR) for either FR-metal or FR-oxide. This document therefore includes the following sections: • Explanation of the data set information, i.e., the data that describes each case. In no case are all of the data presented in the Library included in previous documents. In assembling the Library, we return to raw data files to extract the case and isotopic data, into the specified format. • Explanation of which isotopes and elements are tracked. For example, the transition metals are tracked via the following: two Zr isotopes, Zr-other, Tc99, Tc-other, two Mo-Ru-Rh-Pd isotopes, Mo-Ru-Rh-Pd-other, four other specific TM isotopes, and TM-other. Mo-Ru-Rh-Pd are separated because their content constrains the loading of waste in glass, so we have to know the mass of those elements independent of others. • Rules for collapsing long lists of isotopes (~1000) to the 81 items in the library. For each tracked isotope, we define which short-lived isotopes’ mass (at t=0) is included with the mass of the tracked isotope at t=0, which short-lived radioactive progeny must be accounted for when the tracked isotope decays, and to which of the other 80 items the mass of the tracked isotope goes when it decays. • Explanation of where raw data files can be found on the fuel cycle data portal. • Explanation of generic cross section sets • Explanation of isotope-specific parameters such as heat and dose conversion factors • Explanation of the LWR UOX burnup and FR TRU CR correlations.

Steven J. Piet; Samuel E. Bays; Edward A. Hoffman

2010-08-01T23:59:59.000Z

454

Design of a correlation electron cyclotron emission diagnostic for Alcator C-Mod  

SciTech Connect

A correlation electron cyclotron emission (CECE) diagnostic has been installed in Alcator C-Mod. In order to measure electron temperature fluctuations, this diagnostic uses a spectral decorrelation technique. Constraints obtained with nonlinear gyrokinetic simulations guided the design of the optical system and receiver. The CECE diagnostic is designed to measure temperature fluctuations which have k{sub {theta}}{<=} 4.8 cm{sup -1} (k{sub {theta}}{rho}{sub s} < 0.5) using a well-focused beam pattern. Because the CECE diagnostic is a dedicated turbulence diagnostic, the optical system is also flexible, which allows for various collimating lenses and antenna to be used. The system overview and the demonstration of its operability as designed are presented in this paper.

Sung, C.; White, A. E.; Irby, J. H.; Leccacorvi, R.; Vieira, R.; Oi, C. Y. [Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139 (United States); Peebles, W. A.; Nguyen, X. [University of California, Los Angeles, California 90098 (United States)

2012-10-15T23:59:59.000Z

455

Expert system applications in support of system diagnostics and prognostics at EBR-II  

Science Conference Proceedings (OSTI)

Expert systems have been developed to aid in the monitoring and diagnostics of the Experimental Breeder Reactor-II (EBR-II) at the Idaho National Engineering Laboratory (INEL) in Idaho Falls, Idaho. Systems have been developed for failed fuel surveillance and diagnostics and reactor coolant pump monitoring and diagnostics. A third project is being done jointly by ANL-W and EG G Idaho to develop a transient analysis system to enhance overall plant diagnostic and prognostic capability. The failed fuel surveillance and diagnosis system monitors, processes, and interprets information from nine key plant sensors. It displays to the reactor operator diagnostic information needed to make proper decisions regarding technical specification conformance during reactor operation with failed fuel. 8 refs., 9 figs., 2 tabs.

Lehto, W.K.; Gross, K.C. (Argonne National Lab., Idaho Falls, ID (USA); Argonne National Lab., IL (USA))

1989-01-01T23:59:59.000Z

456

Target diagnostics for intense lithium ion hohlraum experiments on PBFA II  

SciTech Connect

A review of the diagnostics used at Sandia National Laboratories to measure the parameters of intense lithium ion-beam hohlraum target experiments on PBFA II will be presented. This diagnostic package contains an extensive suite of x-ray spectral and imaging diagnostics that enable measurements of target temperature and x-ray output. The x-ray diagnostics include time-integrated and time-resolved pinhole cameras, energy-resolved I-D streaked imaging, diagnostics, time-integrated and time-resolved grazing, incidence spectrographs, a transmission grating spectrograph, an elliptical crystal spectrograph, a bolometer array, an eleven-element x-ray diode (XRD) array, and an eleven-element PIN diode detector array. The incident Li beam symmetry and an estimate of incident Li beam power density can be measured from ion beam-induced characteristic x-ray line emission and neutron emission.

Leeper, R.J.; Bailey, J.E.; Carlson, A.L. [and others

1994-12-31T23:59:59.000Z

457

Godiva IV and Juliet Diagnostics CED-1, Rev. 1 (IER-176)  

SciTech Connect

The Juliet experiment is currently in preliminary design (IER-128). This experiment will utilize a suite of diagnostics to measure the physical state of the device (temperature, surface motion, stress, etc.) and the total and time rate of change of neutron and gamma fluxes. A variety of potential diagnostics has been proposed in this CED-1 report. Based on schedule and funding, a subset of diagnostics will be selected for testing using the Godiva IV pulsed reactor as a source of neutrons and gammas. The diagnostics development and testing will occur over a two year period (FY12-13) culminating in a final set of diagnostics to be fielded for he Juliet experiment currently proposed for execution in FY15.

Scorby, J C; Myers, W L

2012-04-11T23:59:59.000Z

458

Reclamation and reuse of freon in total petroleum hydrocarbon analyses  

SciTech Connect

ADS is using a commercially available solvent reclamation system to recycle 95-97 percent of the Freon used in total petroleum hydrocarbon analyses. ADS has further developed the commercially available solvent reclamation system to accommodate radioactive contaminated Freon. This report establishes the following: validity of the method; success of recycling; and effect of radionuclides in recycling radioactive contaminated Freon. The standard analysis method for determining total petroleum hydrocarbons (commonly known as oil and grease determination) involves solvent extraction of the hydrocarbons using Freon followed by quantitation using infrared detection. This has been the method of choice because it is simple, rugged, inexpensive, and applicable to both solid and liquid samples and to radioactive samples. Due to its deleterious effect on the ozone layer, the use of Freon and other chloro-fluorocarbons (CFCs) has been greatly restricted. Freon has become very expensive (800$/liter) and will soon be unavailable entirely. Several methods have been proposed to replace the Freon extraction method. These methods include solid-phase extraction, solvent extraction, and supercritical fluid extraction all of which use gravimetric determination or infrared analysis of the extracted hydrocarbons. These methods are not as precise or as sensitive as the Freon extraction method, and a larger amount of sample is therefore required due to the decreased sensitivity. The solid phase extraction method cannot accommodate solid samples. Supercritical fluid extraction requires expensive instrumentation. ADS opted to keep the existing Freon method and recycle the solvent. An inexpensive solvent reclamation system was procured to reclaim the spent Freon. This reclaimer removes hydrocarbons from the Freon solvent by passage through an activated carbon bed.

Ekechukwu, A.A.; Peterson, S.F.

1996-04-01T23:59:59.000Z

459

Exergetic, thermal, and externalities analyses of a cogeneration plant  

SciTech Connect

A thermodynamic study of an 88.4 MW cogeneration plant located in the United States is presented in this paper. The feedstock for this actual plant is culm, the waste left from anthracite coal mining. Before combustion in circulating fluidized bed boilers, the usable carbon within the culm is separated from the indigenous rock. The rock and ash waste from the combustion process fill adjacent land previously scared by strip mining. Trees and grass are planted in these areas as part of a land reclamation program. Analyses based on the first and second laws of thermodynamics using actual operating data are first presented to acquaint the reader with the plant's components and operation. Using emission and other relevant environmental data from the plant, all externalities study is outlined that estimates the plant's effect on the local population. The results show that the plant's cycle performs with a coefficient of utilization of 29% and all approximate exergetic efficiency of 34.5%. In order to increase these values, recommended improvements to the plant are noted. In addition, the externality costs associated with the estimated SO{sub 2} and NOx discharge from the culm fed plant are lower (85-95%) than those associated with a similarly sized coal fed plant. The plant's cycle efficiencies are lower than those associated with more modern technologies; such as all integrated gas turbine combined cycle. However, given the abundant, inexpensive supply of feedstock located adjacent to the plant and the environmental benefit of removing culm banks, the plant's existing operation is unique from an economical and environmental viewpoint.

Bailey, M.B.; Curtiss, P.; Blanton, P.H.; McBrayer, T.B. [Rochester Institute of Technology, Rochester, NY (United States). Dept. of Mechanical Engineering

2006-02-15T23:59:59.000Z

460

Econometric Analyses of Public Water Demand in the United States  

E-Print Network (OSTI)

Two broad surveys of community- level water consumption and pricing behavior are used to answer questions about water demand in a more flexible and dynamic context than is provided in the literature. Central themes of price representation, aggregation, and dynamic adjustment tie together three econometric demand analyses. The centerpiece of each analysis is an exogenous weighted price representation. A model in first-differences is estimated by ordinary least squares using data from a personally-conducted survey of Texas urban water suppliers. Annual price elasticity is found to vary with weather and income, with a value of -0.127 at the data mean. The dynamic model becomes a periodic error correction model when the residuals of 12 static monthly models are inserted into the difference model. Distinct residential, commercial, and industrial variables and historical climatic conditions are added to the integrated model, using new national data. Quantity demanded is found to be periodically integrated with a common stochastic root. Because of this, the structural monthly models must be cointegrated to be consistent, which they appear to be. The error correction coefficient is estimated at -0.187. Demand is found to be seasonal and slow to adjust to shocks, with little or no adjustment in a single year and 90% adjustment taking a decade or more. Residential and commercial demand parameters are found to be indistinguishable. The sources of price endogeneity and historical fixes are reviewed. Ideal properties of a weighted price index are identified. For schedules containing exactly two rates, weighting is equivalent to a distribution function in consumption. This property is exploited to derive empirical weights from the national data, using values from a nonparametric generalization of the structural demand model and a nonparametric cumulative density function. The result is a generalization of the price difference metric to a weighted level-price index. The validity of a uniform weighting is not rejected. The weighted price index is data intensive, but the payoff is increased depth and precision for the economist and accessibility for the practitioner.

Bell, David

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "diagnostic analyses ecmwf" 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

Comparisons of Daily Sea Surface Temperature Analyses for 2007–08  

Science Conference Proceedings (OSTI)

Six different SST analyses are compared with each other and with buoy data for the period 2007–08. All analyses used different combinations of satellite data [for example, infrared Advanced Very High Resolution Radiometer (AVHRR) and microwave ...

Richard W. Reynolds; Dudley B. Chelton

2010-07-01T23:59:59.000Z

462

NREL's Clean Energy Policy Analyses Project: 2009 U.S. State...  

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

NREL's Clean Energy Policy Analyses Project: 2009 U.S. State Clean Energy Data Book NREL's Clean Energy Policy Analyses Project: 2009 U.S. State Clean Energy Data Book This data...

463

Evaluation of NMC Upper-Stratospheric Temperature Analyses Using Rocketsonde and Lidar Data  

Science Conference Proceedings (OSTI)

Daily NMC analyses, constructed from operational TOVS data since 1978, are used to monitor behavior of middle atmospheric temperature. Capability of the upper-stratospheric analyses (5, 2, 1, and 0.4 mb) to provide temporally consistent ...

F. G. Finger; M. E. Gelman; A. J. Miller; J. D. Wild; M. L. Chanin; A. Hauchecorne

1993-05-01T23:59:59.000Z

464

Development of advanced strain diagnostic techniques for reactor environments.  

SciTech Connect

The following research is operated as a Laboratory Directed Research and Development (LDRD) initiative at Sandia National Laboratories. The long-term goals of the program include sophisticated diagnostics of advanced fuels testing for nuclear reactors for the Department of Energy (DOE) Gen IV program, with the future capability to provide real-time measurement of strain in fuel rod cladding during operation in situ at any research or power reactor in the United States. By quantifying the stress and strain in fuel rods, it is possible to significantly improve fuel rod design, and consequently, to improve the performance and lifetime of the cladding. During the past year of this program, two sets of experiments were performed: small-scale tests to ensure reliability of the gages, and reactor pulse experiments involving the most viable samples in the Annulated Core Research Reactor (ACRR), located onsite at Sandia. Strain measurement techniques that can provide useful data in the extreme environment of a nuclear reactor core are needed to characterize nuclear fuel rods. This report documents the progression of solutions to this issue that were explored for feasibility in FY12 at Sandia National Laboratories, Albuquerque, NM.

Fleming, Darryn D.; Holschuh, Thomas Vernon,; Miller, Timothy J.; Hall, Aaron Christopher; Urrea, David Anthony,; Parma, Edward J.,

2013-02-01T23:59:59.000Z

465

PROMINENCE PLASMA DIAGNOSTICS THROUGH EXTREME-ULTRAVIOLET ABSORPTION  

SciTech Connect

In this paper, we introduce a new diagnostic technique that uses EUV and UV absorption to determine the electron temperature and column emission measure, as well as the He/H relative abundance of the absorbing plasma. If a realistic assumption on the geometry of the latter can be made and a spectral code such as CHIANTI is used, then this technique can also yield the absorbing plasma hydrogen and electron density. This technique capitalizes on the absorption properties of hydrogen and helium at different wavelength ranges and temperature regimes. Several cases where this technique can be successfully applied are described. This technique works best when the absorbing plasma is hotter than 15,000 K. We demonstrate this technique on AIA observations of plasma absorption during a coronal mass ejection eruption. This technique can be easily applied to existing observations of prominences and cold plasmas in the Sun from almost all space missions devoted to the study of the solar atmosphere, which we list.

Landi, E. [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109 (United States); Reale, F. [Dipartimento di Fisica e Chimica, Universita di Palermo, Piazza del Parlamento 1, I-90134 Palermo (Italy)

2013-07-20T23:59:59.000Z

466

System diagnostics using qualitative analysis and component functional classification  

DOE Patents (OSTI)

A method for detecting and identifying faulty component candidates during off-normal operations of nuclear power plants involves the qualitative analysis of macroscopic imbalances in the conservation equations of mass, energy and momentum in thermal-hydraulic control volumes associated with one or more plant components and the functional classification of components. The qualitative analysis of mass and energy is performed through the associated equations of state, while imbalances in momentum are obtained by tracking mass flow rates which are incorporated into a first knowledge base. The plant components are functionally classified, according to their type, as sources or sinks of mass, energy and momentum, depending upon which of the three balance equations is most strongly affected by a faulty component which is incorporated into a second knowledge base. Information describing the connections among the components of the system forms a third knowledge base. The method is particularly adapted for use in a diagnostic expert system to detect and identify faulty component candidates in the presence of component failures and is not limited to use in a nuclear power plant, but may be used with virtually any type of thermal-hydraulic operating system.

Reifman, Jaques (Lisle, IL); Wei, Thomas Y. C. (Downers Grove, IL)

1993-01-01T23:59:59.000Z

467

System diagnostics using qualitative analysis and component functional classification  

DOE Patents (OSTI)

A method for detecting and identifying faulty component candidates during off-normal operations of nuclear power plants involves the qualitative analysis of macroscopic imbalances in the conservation equations of mass, energy and momentum in thermal-hydraulic control volumes associated with one or more plant components and the functional classification of components. The qualitative analysis of mass and energy is performed through the associated equations of state, while imbalances in momentum are obtained by tracking mass flow rates which are incorporated into a first knowledge base. The plant components are functionally classified, according to their type, as sources or sinks of mass, energy and momentum, depending upon which of the three balance equations is most strongly affected by a faulty component which is incorporated into a second knowledge base. Information describing the connections among the components of the system forms a third knowledge base. The method is particularly adapted for use in a diagnostic expert system to detect and identify faulty component candidates in the presence of component failures and is not limited to use in a nuclear power plant, but may be used with virtually any type of thermal-hydraulic operating system. 5 figures.

Reifman, J.; Wei, T.Y.C.

1993-11-23T23:59:59.000Z

468

Current profile reconstruction using electron temperature imaging diagnostics  

Science Conference Proceedings (OSTI)

Flux surface shape information can be used to constrain the current profile for reconstruction of the plasma equilibrium. One method of inferring flux surface shape relies on plasma x-ray emission; however, deviations from the flux surfaces due to impurity and density asymmetries complicate the interpretation. Electron isotherm surfaces should correspond well to the plasma flux surfaces, and equilibrium constraint modeling using this isotherm information constrains the current profile. The KFIT code is used to assess the profile uncertainty and to optimize the number, location and SNR required for the Te detectors. As Te imaging detectors we consider tangentially viewing, vertically spaced, linear gas electron multiplier arrays operated in pulse height analysis (PHA) mode and multifoil soft x-ray arrays. Isoflux coordinate sets provided by T{sub e} measurements offer a strong constraint on the equilibrium reconstruction in both a stacked horizontal array configuration and a crossed horizontal and vertical beam system, with q{sub 0} determined to within {+-}4%. The required SNR can be provided with either PHA or multicolor diagnostic techniques, though the multicolor system requires {approx}x4 better statistics for comparable final errors.

Tritz, K.; Stutman, D.; Delgado-Aparicio, L.F.; Finkenthal, M.; Pacella, D.; Kaita, R.; Stratton, B.; Sabbagh, S. [Johns Hopkins University, Department of Physics and Astronomy, Plasma Spectroscopy Group, Bloomberg Center, 3400 N. Charles Street, Baltimore, Maryland 21218 (United States); Associazione ENEA-EURATOM sulla Fusione, ENEA, Frascati (Italy); Princeton University Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Columbia University, New York, New York 10027 (United States)

2004-10-01T23:59:59.000Z

469

Target Diagnostic Instrument-Based Controls Framework for the National Ignition Facility  

Science Conference Proceedings (OSTI)

NIF target diagnostics are being developed to observe and measure the extreme physics of targets irradiated by the 192-beam laser. The response time of target materials can be on the order of 100ps--the time it takes light to travel 3 cm--temperatures more than 100 times hotter than the surface of the sun, and pressures that exceed 109 atmospheres. Optical and x-ray diagnostics were developed and fielded to observe and record the results of the first 4-beam experiments at NIF. Hard and soft x-ray spectra were measured, and time-integrated and gated x-ray images of hydrodynamics experiments were recorded. Optical diagnostics recorded backscatter from the target, and VISAR laser velocimetry measurements were taken of laser-shocked target surfaces. Additional diagnostics are being developed and commissioned to observe and diagnose ignition implosions, including various neutron and activation diagnostics. NIF's diagnostics are being developed at LLNL and with collaborators at other sites. To accommodate the growing number of target diagnostics, an Instrument-Based Controls hardware-software framework has been developed to facilitate development and ease integration into the NIF Integrated Computer Control System (ICCS). Individual WindowsXP PC controllers for each digitizer, power supply and camera (i.e., instruments) execute controls software unique to each instrument model. Each hardware-software controller manages a single instrument, in contrast to the complexity of combining all the controls software needed for a diagnostic into a single controller. Because of this simplification, controllers can be more easily tested on the actual hardware, evaluating all normal and off-normal conditions. Each target diagnostic is then supported by a number of instruments, each with its own hardware-software instrument-based controller. Advantages of the instrument-based control architecture and framework include reusability, testability, and improved reliability of the deployed hardware and software. Since the same instruments are commonly used on many different diagnostics, the controllers are reusable by replicating the hardware and software as a unit and reconfiguring the controller using configuration files for the specific diagnostic. Diagnostics are fully integrated and interoperable with ICCS supervisory and shot controls using these configuration files to drive the diagnostics' instrument-based controllers.

Shelton, R; O'Brien, D; Nelson, J; Kamperschroer, J

2007-05-07T23:59:59.000Z

470

Atlas chamber, power flow channel, and diagnostic interface design  

DOE Green Energy (OSTI)

The Atlas pulsed-power machine, presently being designed at Los Alamos, will deliver a pulse of {approximately} 45 MA, in 4--5 {micro}sec, with energies of up to 6 MJ (from a bank of 36 MJ maximum) to a load assembly, located in vacuum. Design considerations for the vacuum vessel, power flow channel from the vessel inward, are presented. In contrast to Sandia`s PBFA II-Z, where 20 MA currents and 2--2.5 MJ of energy are delivered to ({approximately} 15 mg) loads in {approximately} 100 nsec, the Atlas structures will have to be designed for longer timescales and higher energies to drive heavy lines ({approximately} 70 g). Design issues for the chamber include materials stresses, formation of (and protection from) debris and molten jets, impulse loading, and survivability and ease of replacement of internal structures. For the power flow channel designs, issues are minimizing inductance, preventing movement of conductors during and after firing, damage mitigation, reducing the cost of materials and installation, and electrical insulation. A key issue for damage mitigation is the radius within which total destruction of material objects occurs. Choices of vessel size, insulator materials, cost and ease of manufacturing, and mechanical stability issues are presently in the conceptual design phase. Typical access requirements for diagnostics (including radial and axial X-ray backlighting, flux loops, spectroscopy, interferometry, bolometry, etc.) are provided for in the design.

Wurden, G.A.; Davis, H.A.; Taylor, A.; Bowman, D.; Ballard, E.; Ney, S.; Scudder, D.; Trainor, J.

1997-09-01T23:59:59.000Z

471

Enumeration Conservation Law and Natural Parallelism of the D-algorithms for Test Generation and Modeling in Engineering Diagnostics  

Science Conference Proceedings (OSTI)

In Part I, typical and minimum diagnostic labyrinths that graphically model generation and modeling of tests were introduced using the D-algorithms. Notions of the value of diagnostic enumeration and the minimum value Prmin of this ...

P. A. Pravil'shchikov

2004-07-01T23:59:59.000Z

472

New Plasma Measurements With a Multichannel Milllimeter-wave Fluctuation Diagnostic System in the DIII-D Tokamak (A26734)  

E-Print Network (OSTI)

Proc. 18th Topical Conf. On High Temperature Plasma Diagnostics, May 16-20, 2010, Wildwood, New Jersey And To Be Published In Rev. Sci18th Topical Conference on High Temperature Plasma Diagnostics Wildwood New Jersey, US, 2010999617350

Hillesheim, J.C.

2010-06-10T23:59:59.000Z

473

Integration of the Optical Replica Ultrashort Electron Bunch Diagnostics with the Current-Enhanced SASE in the LCLS  

E-Print Network (OSTI)

Integration of the Optical Replica Ultrashort Electron Bunch Diagnostics with the Current-Enhanced SASE in the LCLS

Ding, Y; Emma, P

2007-01-01T23:59:59.000Z

474

Investigating the Association of Eye Gaze Pattern and Diagnostic Error in Mammography  

SciTech Connect

The objective of this study was to investigate the association between eye-gaze patterns and the diagnostic accuracy of radiologists for the task of assessing the likelihood of malignancy of mammographic masses. Six radiologists (2 expert breast imagers and 4 Radiology residents of variable training) assessed the likelihood of malignancy of 40 biopsy-proven mammographic masses (20 malignant and 20 benign) on a computer monitor. Eye-gaze data were collected using a commercial remote eye-tracker. Upon reviewing each mass, the radiologists were also asked to provide their assessment regarding the probability of malignancy of the depicted mass as well as a rating regarding the perceived difficulty of the diagnostic task. The collected data were analyzed using established algorithms and various quantitative metrics were extracted to characterize the recorded gaze patterns. The extracted metrics were correlated with the radiologists diagnostic decisions and perceived complexity scores. Results showed that the visual gaze pattern of radiologists varies substantially, not only depending on their experience level but also among individuals. However, some eye gaze metrics appear to correlate with diagnostic error and perceived complexity more consistently. These results suggest that although gaze patterns are generally associated with diagnostic error and the human perceived difficulty of the diagnostic task, there are substantially individual differences that are not explained simply by the experience level of the individual performing the diagnostic task.

Voisin, Sophie [ORNL; Pinto, Frank M [ORNL; Xu, Songhua [ORNL; Morin-Ducote, Garnetta [University of Tennessee, Knoxville (UTK); Hudson, Kathy [University of Tennessee, Knoxville (UTK); Tourassi, Georgia [ORNL

2013-01-01T23:59:59.000Z

475

Study of Explosive and Nonexplosive Cyclogenesis during FGGE  

Science Conference Proceedings (OSTI)

Explosive cyclogenesis during the winter of the First Global GARP Experiment (January–February 1979) is analyzed using the revised European Centre for Medium Range Weather Forecasts (ECMWF) analyses. Explosive cyclogenesis is defined as a ...

Carlyle H. Wash; Robert A. Hale; Paul H. Dobos; Eric J. Wright

1992-01-01T23:59:59.000Z

476

Impact of Targeted Winter Storm Reconnaissance Dropwindsonde Data on Midlatitude Numerical Weather Predictions  

Science Conference Proceedings (OSTI)

The impact of assimilating data from the 2011 Winter Storm Reconnaissance (WSR) program on numerical weather forecasts was assessed. Parallel sets of analyses and deterministic 120-h numerical forecasts were generated using the ECMWF four-...

Thomas M. Hamill; Fanglin Yang; Carla Cardinali; Sharanya J. Majumdar

2013-06-01T23:59:59.000Z

477

A Case Study of Heavy Rainfall Associated with Weak Cyclogenesis in the Northwest Gulf of Mexico  

Science Conference Proceedings (OSTI)

This paper describes a case of unexpected weak cyclogenesis over the northwestern Gulf of Mexico from 16 to 19 September 1984 based upon manually prepared and European Centre for Medium-Range Weather Forecasts (ECMWF) gridded analyses. Noteworthy ...

Lance F. Bosart; Chung-Chieng Lai; Robert A. Weisman

1992-11-01T23:59:59.000Z

478

Western North Pacific Monsoon Depression Formation  

Science Conference Proceedings (OSTI)

Relatively few studies have been carried out as to the conditions leading to the formation of monsoon depressions in the western North Pacific. Two monsoon depression formations during July 2007 were analyzed using ECMWF analyses and satellite ...

Jodi C. Beattie; Russell L. Elsberry

2012-12-01T23:59:59.000Z

479

Climate Simulations of African Easterly Waves  

Science Conference Proceedings (OSTI)

The three-dimensional structure and propagation characteristics of African easterly waves for the 1986–94 period are studied with June–August European Centre for Medium-Range Weather Forecasts (ECMWF) operational analyses, National Centers for ...

John C. Fyfe

1999-06-01T23:59:59.000Z

480

Life Cycle Study of a Diabatic Rossby Wave as a Precursor to Rapid Cyclogenesis in the North Atlantic—Dynamics and Forecast Performance  

Science Conference Proceedings (OSTI)

The life cycle of a North Atlantic cyclone in December 2005 that included a rapid propagation phase as a diabatic Rossby wave (DRW) is investigated by means of operational analyses and deterministic forecasts from the ECMWF. A quasigeostrophic ...

Maxi Boettcher; Heini Wernli

2011-06-01T23:59:59.000Z

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