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1

Definition: Frequency-Domain Electromagnetics Survey | Open Energy  

Open Energy Info (EERE)

Frequency-Domain Electromagnetics Survey Frequency-Domain Electromagnetics Survey Jump to: navigation, search Dictionary.png Frequency-Domain Electromagnetics Survey Frequency-domain electromagnetic techniques are continuous wave field methods which enable the mapping of the electrical conductivity of the subsurface through electromagnetic induction.[1] View on Wikipedia Wikipedia Definition Electromagnetic induction is the production of a potential difference (voltage) across a conductor when it is exposed to a varying magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831 though it may have been anticipated by the work of Francesco Zantedeschi in 1829. Around 1830 to 1832, Joseph Henry made a similar discovery, but did not publish his findings until later. Faraday's

2

Definition: Frequency-Domain Electromagnetic Survey | Open Energy  

Open Energy Info (EERE)

Electromagnetic Survey Electromagnetic Survey Jump to: navigation, search Dictionary.png Frequency-Domain Electromagnetic Survey Frequency-domain electromagnetic techniques are continuous wave field methods which enable the mapping of the electrical conductivity of the subsurface through electromagnetic induction.[1] Also Known As Controlled-Source EM References ↑ http://library.seg.org/doi/pdf/10.1190/1.1441531 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Frequency-Domain_Electromagnetic_Survey&oldid=591411" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services

3

Frequency-Domain Electromagnetic Survey | Open Energy Information  

Open Energy Info (EERE)

Frequency-Domain Electromagnetic Survey Frequency-Domain Electromagnetic Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Frequency-Domain Electromagnetic Survey Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Profiling Techniques Information Provided by Technique Lithology: Detection of high-conductivity bodies in the subsurface. Stratigraphic/Structural: Hydrological: Thermal: Detection of the presence of a thermal anomaly through its resistivity signature. Cost Information Low-End Estimate (USD): 2,928.38292,838 centUSD 2.928 kUSD 0.00293 MUSD 2.92838e-6 TUSD / mile Median Estimate (USD): 4,505.20450,520 centUSD

4

Airborne electromagnetic surveys as a reconnaissance technique...  

Open Energy Info (EERE)

electromagnetic surveys as a reconnaissance technique for geothermal exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Airborne...

5

Airborne Electromagnetic Survey | Open Energy Information  

Open Energy Info (EERE)

Airborne Electromagnetic Survey Airborne Electromagnetic Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Airborne Electromagnetic Survey Details Activities (2) Areas (2) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: provide data on rock type and mineral content Stratigraphic/Structural: Hydrological: can be used to detect changes in density of fluids and indicate if there is salt water intrusion Thermal: Cost Information Low-End Estimate (USD): 48.274,827 centUSD 0.0483 kUSD 4.827e-5 MUSD 4.827e-8 TUSD / mile Median Estimate (USD): 317.3831,738 centUSD 0.317 kUSD

6

TESTING GROUND BASED GEOPHYSICAL TECHNIQUES TO REFINE ELECTROMAGNETIC SURVEYS NORTH OF THE 300 AREA HANFORD WASHINGTON  

SciTech Connect

Airborne electromagnetic (AEM) surveys were flown during fiscal year (FY) 2008 within the 600 Area in an attempt to characterize the underlying subsurface and to aid in the closure and remediation design study goals for the 200-PO-1 Groundwater Operable Unit (OU). The rationale for using the AEM surveys was that airborne surveys can cover large areas rapidly at relatively low costs with minimal cultural impact, and observed geo-electrical anomalies could be correlated with important subsurface geologic and hydrogeologic features. Initial interpretation of the AEM surveys indicated a tenuous correlation with the underlying geology, from which several anomalous zones likely associated with channels/erosional features incised into the Ringold units were identified near the River Corridor. Preliminary modeling resulted in a slightly improved correlation but revealed that more information was required to constrain the modeling (SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site). Both time-and frequency domain AEM surveys were collected with the densest coverage occurring adjacent to the Columbia River Corridor. Time domain surveys targeted deeper subsurface features (e.g., top-of-basalt) and were acquired using the HeliGEOTEM{reg_sign} system along north-south flight lines with a nominal 400 m (1,312 ft) spacing. The frequency domain RESOLVE system acquired electromagnetic (EM) data along tighter spaced (100 m [328 ft] and 200 m [656 ft]) north-south profiles in the eastern fifth of the 200-PO-1 Groundwater OU (immediately adjacent to the River Corridor). The overall goal of this study is to provide further quantification of the AEM survey results, using ground based geophysical methods, and to link results to the underlying geology and/or hydrogeology. Specific goals of this project are as follows: (1) Test ground based geophysical techniques for the efficacy in delineating underlying geology; (2) Use ground measurements to refine interpretations of AEM data; and (3) Improve the calibration and correlation of AEM information. The potential benefits of this project are as follows: (1) Develop a tool to map subsurface units at the Hanford Site in a rapid and cost effective manner; (2) Map groundwater pathways within the River Corridor; and (3) Aid development of the conceptual site model. If anomalies observed in the AEM data can be correlated with subsurface geology, then the rapid scanning and non-intrusive capabilities provided by the airborne surveys can be used at the Hanford Site to screen for areas that warrant further investigation.

PETERSEN SW

2010-12-02T23:59:59.000Z

7

Electromagnetic (EM-69) survey of the McCoy geothermal prospect, Nevada  

DOE Green Energy (OSTI)

A frequency-domain electromagnetic survey was conducted at 19 stations over a 200 km/sup 2/ area encompassing the McCoy geothermal prospect, Churchill County, central Nevada. The McCoy area is characterized by high heat flow, mercury mineralization, and recent volcanics. Three horizontal-loop transmitters were used with receivers from 0.5 to more than 4.0 km from the loops. Receiver stations were arranged along a pair of crossing north-south and east-west lines. Data were interpreted first with a simple apparent resistivity formula and then with a least-squares lumped-model inversion program. The rough terrain and complex geology introduce an element of uncertainty to the interpretations.

Wilt, M.; Haught, R.; Goldstein, N.E.

1980-12-01T23:59:59.000Z

8

Airborne Electromagnetic Survey At Raft River Geothermal Area (1979) | Open  

Open Energy Info (EERE)

Electromagnetic Survey At Raft River Electromagnetic Survey At Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Airborne Electromagnetic Survey Activity Date 1979 Usefulness not indicated DOE-funding Unknown Exploration Basis To show that AEM methods can be useful in exploration for and defining geothermal systems Notes Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. References Christopherson, K.R.; Long, C.L.; Hoover, D.B. (1 September 1980) Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Retrieved from "http://en.openei.org/w/index.php?title=Airborne_Electromagnetic_Survey_At_Raft_River_Geothermal_Area_(1979)&oldid=510231

9

Airborne electromagnetic surveys as a reconnaissance technique for  

Open Energy Info (EERE)

electromagnetic surveys as a reconnaissance technique for electromagnetic surveys as a reconnaissance technique for geothermal exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Details Activities (1) Areas (1) Regions (0) Abstract: INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five Known Geothermal Resource Areas (KGRA's). AEM work has not been significantly utilized in the past for geothermal purposes because it was thought that a shallow exploration technique would not be effective. Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. INPUT responses in the form of

10

Controlled-source electromagnetic survey at Soda Lakes geothermal area, Nevada  

DOE Green Energy (OSTI)

The EM-60 system, a large-moment frequency-domain electromagnetic loop prospecting system, was operated in the Soda Lakes geothermal area, Nevada. Thirteen stations were occupied at distances ranging from 0.5-3.0 km from two transmitter sites. These yielded four sounding curves--the normalized amplitudes and phases of the vertical and radial magnetic fields as a function of frequency--at each station. In addition, two polarization ellipse parameters, ellipticity and tilt angle, were calculated at each frequency. The data were interpreted by means of a least-squares inversion procedure which fits a layered resistivity model to the data. A three-layer structure is indicated, with a near-surface 20 ohm-m layer of 100-400 m thickness, a middle 2 ohm-m layer of approximately 1 km thickness, and a basement of greater than 10 ohm-m. The models indicate a northwesterly structural strike; the top and middle layers seem to thicken from northeast to southwest. The results agree quite well with previous results of dipole-dipole and magnetotelluric (MT) surveys. The EM-60 survey provided greater depth penetration (1 to 1.5 km) than dipole-dipole, but MT far surpassed both in its depth of exploration. One advantage of EM in this area is its ease and speed of operation. Another advantage, its relative insensitivity to lateral inhomogeneities, is not as pronounced here as it would be in areas of more complex geology.

Stark, M.; Wilt, M.; Haught, J.R.; Goldstein, N.

1980-07-01T23:59:59.000Z

11

Communicating oscillatory networks: Frequency Domain Analysis  

E-Print Network (OSTI)

-deterministic models and used the presented techni- que of frequency domain analysis to investigate the differ- ences. The quasi-deterministic models are constructed from exactly the same reaction scheme and kinetic para- meters, however the kinetic functions... significant role in our findings. Note in particular from Additional file 1 Table S4 that the two species that directly perturb the cell cycle (namely p53a and NF-#1;Bn) have low stochasticity, so any noise inherent in their respective net- works does...

Ihekwaba, Adaoha E C; Sedwards, Sean

2011-12-22T23:59:59.000Z

12

Survey of nucleon electromagnetic form factors  

Science Conference Proceedings (OSTI)

There has been much activity in the measurement of the elastic electromagnetic proton and neutron form factors in the last decade, and the quality of the data has been greatly improved by performing double polarization experiments, in compar- ison with previous unpolarized data. Here we review the experimental data base in view of the new results for the proton, and neutron, obtained at MIT-Bates, MAMI, and JLab. The rapid evolution of phenomenological models triggered by these high-precision experiments will be discussed.

Perdrisat, Charles F. [William and Mary College; Punjabi, Vina A. [Norfolk State U.

2011-09-20T23:59:59.000Z

13

Frequency-domain constructed redundant bases for denoising  

Science Conference Proceedings (OSTI)

In this paper, redundant bases for denoising are constructed completely in the frequency-domain. The advantage of the frequency-domain bases construction approach is that it provides much more flexibility. As a result, the filterbank (basis) can be constructed ... Keywords: denoising, redundant basis, wavelet frames, wavelets

Jianyu Lin; Graham C. Goodwin

2007-04-01T23:59:59.000Z

14

Controlled Source Frequency-Domain Magnetics At Salt Wells Area  

Open Energy Info (EERE)

Controlled Source Frequency-Domain Magnetics At Salt Wells Area Controlled Source Frequency-Domain Magnetics At Salt Wells Area (Montgomery, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Controlled Source Frequency-Domain Magnetics At Salt Wells Area (Montgomery, Et Al., 2005) Exploration Activity Details Location Salt Wells Area Exploration Technique Controlled Source Frequency-Domain Magnetics Activity Date 2004 - 2004 Usefulness useful DOE-funding Unknown Exploration Basis AMP Resource contracted Willowstick Technologies, LLC to conduct a Controlled Source-Frequency Domain Magnetics (CS-FDM) geophysical investigation at Salt Wells in order to characterize and delineate areas showing the greatest concentrations and highest temperatures of geothermal groundwater. The investigation also sought to map blind faults beneath the

15

Definition: Controlled Source Frequency-Domain Magnetics | Open Energy  

Open Energy Info (EERE)

Frequency-Domain Magnetics Frequency-Domain Magnetics Jump to: navigation, search Dictionary.png Controlled Source Frequency-Domain Magnetics AquaTrackTM, a controlled-source frequency domain magnetics tool (CS-FDM), is a patented invention by Willowstick Technologies. This technique is meant to characterize groundwater conditions and flow patterns up to 1,000 m depth.[1] References ↑ http://pangea.stanford.edu/ERE/pdf/IGAstandard/SGW/2006/kofoed.pdf Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Controlled_Source_Frequency-Domain_Magnetics&oldid=590084" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load)

16

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,  

Open Energy Info (EERE)

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library == A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, HawaiiThesis/Dissertation == Author Catherine King Skokan Organization Colorado School of Mines Published Publisher Not Provided, 1974 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii Citation [[Citation::Catherine King Skokan. 1974. A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii []. [ (!) ]: Colorado School of Mines.]] Retrieved from "http://en.openei.org/w/index.php?title=A_Time-Domain_Electromagnetic_Survey_of_the_East_Rift_Zone_Kilauea_Volcano,_Hawaii&oldid=682585"

17

Observed and Simulated Energy Cycles in the Frequency Domain  

Science Conference Proceedings (OSTI)

The analysis of spectral energetics in the frequency domain has been applied to several observed datasets and those simulated by a GFDL general circulation model. There exists good agreement on the directions of energy flows between the observed ...

Jian Sheng; Yoshikazu Hayashi

1990-05-01T23:59:59.000Z

18

Category:Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Electromagnetic Profiling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electromagnetic Profiling Techniques page? For detailed information on Electromagnetic Profiling Techniques, click here. Category:Electromagnetic Profiling Techniques Add.png Add a new Electromagnetic Profiling Techniques Technique Pages in category "Electromagnetic Profiling Techniques" This category contains only the following page. F Frequency-Domain Electromagnetic Survey Retrieved from "http://en.openei.org/w/index.php?title=Category:Electromagnetic_Profiling_Techniques&oldid=689835"

19

Controlled Source Frequency-Domain Magnetics | Open Energy Information  

Open Energy Info (EERE)

Controlled Source Frequency-Domain Magnetics Controlled Source Frequency-Domain Magnetics Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Controlled Source Frequency-Domain Magnetics Details Activities (2) Areas (2) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Magnetic Techniques Parent Exploration Technique: Magnetic Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Locate geothermal groundwater and flow patterns. Thermal: Cost Information Low-End Estimate (USD): 12,000.001,200,000 centUSD 12 kUSD 0.012 MUSD 1.2e-5 TUSD / mile Median Estimate (USD): 18,000.001,800,000 centUSD 18 kUSD 0.018 MUSD 1.8e-5 TUSD / mile High-End Estimate (USD): 25,000.002,500,000 centUSD

20

Face images feature extraction analysis for recognition in frequency domain  

Science Conference Proceedings (OSTI)

In this paper a novel technique to extract facial features for recognition in frequency domain using Discrete Fourier Transform (DFT) is presented. In pre processing phase facial tilt and varying image background challenges have been addressed to improve ... Keywords: DFT, dimension reduction, face recognition, facial tilt, image background, image decimation

M. Almas Anjum; M. Younus Javed

2006-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) | Open  

Open Energy Info (EERE)

Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Exploration Activity Details Location Chena Geothermal Area Exploration Technique Airborne Electromagnetic Survey Activity Date 2008 Usefulness not indicated DOE-funding Unknown Notes The airborne resistivity (Fig. 2; panel c) shows high values in most of the areas including the Chena pluton, with the exception of the very northern and southern portion of the map where the Paleozoic metamorphic unit is located. Lineations of low resistivity at the west end of the area are generally associated with the location of the valley fill. However, some

22

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea...  

Open Energy Info (EERE)

1974 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,...

23

Helicopter Electromagnetic Survey of the Model Land Area, Southeastern Miami-Dade County, Florida  

E-Print Network (OSTI)

Helicopter Electromagnetic Survey of the Model Land Area, Southeastern Miami-Dade County, Florida, Southeastern Miami-Dade County, Florida: U.S. Geological Survey Open-File Report 2012­1176, 77 p. Any use of Environmental Resources Management (Miami-Dade County, Florida) DOI depth of investigation DRG digital raster

24

Using Helicopter Electromagnetic Surveys to Identify Potential Hazards at Mine Waste Impoundments  

Science Conference Proceedings (OSTI)

In July 2003, helicopter electromagnetic surveys were conducted at 14 coal waste impoundments in southern West Virginia. The purpose of the surveys was to detect conditions that could lead to impoundment failure either by structural failure of the embankment or by the flooding of adjacent or underlying mine works. Specifically, the surveys attempted to: 1) identify saturated zones within the mine waste, 2) delineate filtrate flow paths through the embankment or into adjacent strata and receiving streams, and 3) identify flooded mine workings underlying or adjacent to the waste impoundment. Data from the helicopter surveys were processed to generate conductivity/depth images. Conductivity/depth images were then spatially linked to georeferenced air photos or topographic maps for interpretation. Conductivity/depth images were found to provide a snapshot of the hydrologic conditions that exist within the impoundment. This information can be used to predict potential areas of failure within the embankment because of its ability to image the phreatic zone. Also, the electromagnetic survey can identify areas of unconsolidated slurry in the decant basin and beneath the embankment. Although shallow, flooded mineworks beneath the impoundment were identified by this survey, it cannot be assumed that electromagnetic surveys can detect all underlying mines. A preliminary evaluation of the data implies that helicopter electromagnetic surveys can provide a better understanding of the phreatic zone than the piezometer arrays that are typically used.

Hammack, R.W.

2008-01-01T23:59:59.000Z

25

Temperature-profile determination using frequency-domain reflectometry  

DOE Green Energy (OSTI)

The temperature distribution along a coaxial electrical cable can be determined by means of frequency-domain reflectometry if the cable has an inner sheath of a suitable temperature-sensitive dielectric material. Such a technique would have advantages in cost and convenience over the conventional method of placing a separate thermocouple at each point where the temperature is to be measured. It would be especially useful for underground applications in assessing geothermal reservoirs and in instrumenting in situ coal-gasification and oil-shale-retorting experiments.

Lytle, R.J.; Myers, G.K.

1976-04-02T23:59:59.000Z

26

Electromagnetic (EM-60) survey in the Panther Canyon Area, Grass Valley, Nevada  

DOE Green Energy (OSTI)

Eight frequency domain electromagnetic soundings were measured over the Panther Canyon thermal anomaly in Grass Valley, Nevada. The data were collected with Lawrence Berkeley Laboratory's large moment horizontal loop system (EM-60). At the transmitter site located near the center of the thermal anomaly, square wave currents of up to 70 A were impressed into a fourturn 50 m radius coil at frequencies from 0.033 to 500 Hz. At the eight receiver sites, 0.5 to 1.5 km from the loop, magnetic fields were detected with a three-component SQUID magnetometer and vertical and radial magnetic field spectra were calculated. Data were interpreted with a computer program which fit filled spectra and associated ellipse polarization data to one-dimensional resistivity models and results were compared to interpretations from earlier dipole-dipole resistivity measurements. Comparison of these interpretations indicates fairly close agreement between the two, with both models clearly indicating the presence and dimensions of the conductivity anomaly associated with the thermal zone. Although the dc data was better able to resolve the high resistivity bedrock, the EM-data were able to resolve all major features without distortion at shorter transmitter receiver separations and in about one-third of the field time.

Wilt, M.; Goldstein, N.; Stark, M.; Haught, R.

1980-05-01T23:59:59.000Z

27

Ion mobility spectrometer using frequency-domain separation  

DOE Patents (OSTI)

An apparatus and method are provided for separating and analyzing chemical species in an ion mobility spectrometer using a frequency-domain technique wherein the ions generated from the chemical species are selectively transported through an ion flow channel having a moving electrical potential therein. The moving electrical potential allows the ions to be selected according to ion mobility, with certain of the ions being transported to an ion detector and other of the ions being effectively discriminated against. The apparatus and method have applications for sensitive chemical detection and analysis for monitoring of exhaust gases, hazardous waste sites, industrial processes, aerospace systems, non-proliferation, and treaty verification. The apparatus can be formed as a microelectromechanical device (i.e. a micromachine). 6 figs.

Martin, S.J.; Butler, M.A.; Frye, G.C.; Schubert, W.K.

1998-08-04T23:59:59.000Z

28

Ion mobility spectrometer using frequency-domain separation  

DOE Patents (OSTI)

An apparatus and method is provided for separating and analyzing chemical species in an ion mobility spectrometer using a frequency-domain technique wherein the ions generated from the chemical species are selectively transported through an ion flow channel having a moving electrical potential therein. The moving electrical potential allows the ions to be selected according to ion mobility, with certain of the ions being transported to an ion detector and other of the ions being effectively discriminated against. The apparatus and method have applications for sensitive chemical detection and analysis for monitoring of exhaust gases, hazardous waste sites, industrial processes, aerospace systems, non-proliferation, and treaty verification. The apparatus can be formed as a microelectromechanical device (i.e. a micromachine).

Martin, Stephen J. (Albuquerque, NM); Butler, Michael A. (Albuquerque, NM); Frye, Gregory C. (Cedar Crest, NM); Schubert, W. Kent (Albuquerque, NM)

1998-01-01T23:59:59.000Z

29

Estimation of Atmospheric Energetics in the Frequency Domain during the FGGE Year  

Science Conference Proceedings (OSTI)

The energetics of atmospheric motions are studied in the frequency domain using the two versions of the FGGE IIIb dataset, processed at GFDL and ECMWF. It is demonstrated that the frequency spectra of kinetic energy (KE) and available potential ...

Jian Sheng; Yoshikazu Hayashi

1990-05-01T23:59:59.000Z

30

Nonlinear Cascades of Surface Oceanic Geostrophic Kinetic Energy in the Frequency Domain  

Science Conference Proceedings (OSTI)

Motivated by the ubiquity of time series in oceanic data, the relative lack of studies of geostrophic turbulence in the frequency domain, and the interest in quantifying the contributions of intrinsic nonlinearities to oceanic frequency spectra, ...

Brian K. Arbic; Robert B. Scott; Glenn R. Flierl; Andrew J. Morten; James G. Richman; Jay F. Shriver

2012-09-01T23:59:59.000Z

31

An Improved High-Resolution Processing Method for a Frequency Domain Interferometric Imaging (FII) Technique  

Science Conference Proceedings (OSTI)

Frequency hopping [also recently called range imaging (RIM) or frequency domain interferometric imaging (FII)] is a pulse compression technique used to improve the range resolution ?r of Doppler radars limited by their minimum transmitted pulse ...

Lydi Sma; Hubert Luce; Michel Crochet; Shoichiro Fukao

2002-06-01T23:59:59.000Z

32

TEA - a linear frequency domain finite element model for tidal embayment analysis  

E-Print Network (OSTI)

A frequency domain (harmonic) finite element model is developed for the numerical prediction of depth average circulation within small embayments. Such embayments are often characterized by irregular boundaries and bottom ...

Westerink, Joannes J.

1984-01-01T23:59:59.000Z

33

User`s guide for the frequency domain algorithms in the LIFE2 fatigue analysis code  

DOE Green Energy (OSTI)

The LIFE2 computer code is a fatigue/fracture analysis code that is specialized to the analysis of wind turbine components. The numerical formulation of the code uses a series of cycle count matrices to describe the cyclic stress states imposed upon the turbine. However, many structural analysis techniques yield frequency-domain stress spectra and a large body of experimental loads (stress) data is reported in the frequency domain. To permit the analysis of this class of data, a Fourier analysis is used to transform a frequency-domain spectrum to an equivalent time series suitable for rainflow counting by other modules in the code. This paper describes the algorithms incorporated into the code and their numerical implementation. Example problems are used to illustrate typical inputs and outputs.

Sutherland, H.J. [Sandia National Labs., Albuquerque, NM (United States); Linker, R.L. [New Mexico Engineering Research Inst., Albuquerque, NM (United States)

1993-10-01T23:59:59.000Z

34

Frequency-domain stress prediction algorithm for the LIFE2 fatigue analysis code  

SciTech Connect

The LIFE2 computer code is a fatigue/fracture analysis code that is specialized to the analysis of wind turbine components. The numerical formulation of the code uses a series of cycle mount matrices to describe the cyclic stress states imposed upon the turbine. However, many structural analysis techniques yield frequency-domain stress spectra and a large body of experimental loads (stress) data is reported in the frequency domain. To permit the analysis of this class of data, a Fourier analysis module has been added to the code. The module transforms the frequency spectrum to an equivalent time series suitable for rainflow counting by other modules in the code. This paper describes the algorithms incorporated into the code and uses experimental data to illustrate their use. 10 refs., 11 figs.

Sutherland, H.J.

1992-01-01T23:59:59.000Z

35

Quantitative broadband absorption and scattering spectroscopy in turbid media by combined frequency-domain and steady state methodologies  

DOE Patents (OSTI)

A technique for measuring broadband near-infrared absorption spectra of turbid media that uses a combination of frequency-domain and steady-state reflectance methods. Most of the wavelength coverage is provided by a white-light steady-state measurement, whereas the frequency-domain data are acquired at a few selected wavelengths. Coefficients of absorption and reduced scattering derived from the frequency-domain data are used to calibrate the intensity of the steady-state measurements and to determine the reduced scattering coefficient at all wavelengths in the spectral window of interest. The absorption coefficient spectrum is determined by comparing the steady-state reflectance values with the predictions of diffusion theory, wavelength by wavelength. Absorption spectra of a turbid phantom and of human breast tissue in vivo, derived with the combined frequency-domain and steady-state technique, agree well with expected reference values.

Tromberg, Bruce J. (Irvine, CA); Berger, Andrew J. (Rochester, NY); Cerussi, Albert E. (Lake Forest, CA); Bevilacqua, Frederic (Costa Mesa, CA); Jakubowski, Dorota (Irvine, CA)

2008-09-23T23:59:59.000Z

36

Frequency-Domain Synthesis Of The Fatigue Load Spectrum For The Nps 100-Kw Wind Turbine  

E-Print Network (OSTI)

* The LIFE2 code is a fatigue/fracture mechanics code that is specialized to the analysis of wind turbine components. Two frequency-domain stress spectra techniques contained in this code are used to analyze the measured frequency loads spectra from the Northern Power Systems 100-kW turbine. Results of the two techniques are compared to cycle counts obtained directly from time series data. These results provide the wind turbine designer with two techniques for determining the cycle-counts from frequency data and illustrate the accuracy that the designer can expect from various cycle-counting techniques. INTRODUCTION The LIFE2 code is a fatigue/fracture mechanics code that is specialized to the analysis of wind turbine components. 1 This code permits the analysis of both time series 2 and frequency domain data. 3 In the case of the former, a "rainflow counting" algorithm is used to convert time series data into a cycle count matrix suitable for fatigue analysis. For the latter,...

Herbert J. Sutherland; Richard M. Osgood

1992-01-01T23:59:59.000Z

37

Experience with the EM-60 electromagnetic system for geothermal exploration in Nevada  

DOE Green Energy (OSTI)

Lawrence Berkeley Laboratory (LBL) conducted controlled-source electromagnetic (EM) surveys at three geothermal prospects in northern Nevada. Over 40 soundings were made in Panther Canyon (Grass Valley), near Winnemucca; Soda Lakes, near Fallon; and McCoy, west of Austin, to test and demonstrate the applicability of LBL's EM-60 system to geothermal exploration. The EM-60 is a frequency-domain system using three-component magnetic detection. Typically, +-65 A is applied to an 100-m-diameter four-turn horizontal loop, generating a dipole moment >10/sup 6/ MKS over the frequency range 10/sup -3/ to 10/sup -3/ Hz. With such a source loop, soundings were made, at transmitter-receiver separations of up to 4 km, providing a maximum depth of penetration of 4 km.

Wilt, M.; Goldstein, N.E.; Stark, M.; Haught, J.R.; Morrison, H.F.

1981-09-01T23:59:59.000Z

38

Literature Survey on Transformer Models for the Simulation of Electromagnetic Transients with Emphasis on Geomagnetic-Inducted Curre nt (GIC) Applications  

Science Conference Proceedings (OSTI)

Previous studies have demonstrated that geomagnetically induced currents (GICs) caused by geomagnetic disturbances (GMDs) can cause half-cycle saturation in power transformers. To better understand transformer vulnerability to GMDs, transformer models need to be developed that can accurately model the impact of very low frequency GICs on the transformers. This report presents the results of a literature survey of transformer models for the simulation and analysis of electromagnetic transients for ...

2012-11-14T23:59:59.000Z

39

Application and modeling of frequency-domain lifetime spectroscopy for microsphere-based optical glucose sensors  

E-Print Network (OSTI)

A new glucose affinity sensor based on a homogeneous fluorescence resonance energy transfer (FRET) assay system was developed to monitor the competitive binding between concanavalin A (ConA) and dextran. The FRET quenching kinetics of the donor were analyzed from frequency-domain (FD) measurements as functions of both glucose and acceptor-protein concentrations using a Frster-type decay kinetics model. The results showed that the FD measurements and donor decay kinetics can indicate quantitative changes in the presence of glucose at concentrations ranging from 0 to 224 mg/dL. The second set of experiments proved the feasibility of performing analyte sensing with FD lifetime spectroscopy using microsphere-based sensors in multiple scattering solutions. A well characterized pH-sensitive fluorophore was entrapped in poly(ethylene glycol) microspheres. The particles were then immersed in a buffered polystyrene solution of various pH. Measurements of phase shift and modulation of the generated and multiply scattered fluorescent light were acquired as the modulation frequency of the incident excitation light varied from 10 to 120 MHz. After the measured data were analyzed with the coupled diffusion equations, the obtained lifetimes from the scattering measurements matched values from non-scattering measurements. Lastly, a new two-speed Monte Carlo (MC) simulation was developed to predict light propagation through the sensors and thus was used to evaluate these sensors and to design these sensors for implantation. The model used random packing structure and considered geometric optics and two light propagation speeds. Experimental measurements of phase-shift and modulation of excitation light were made on a cubic phantom with non-fluorescent resin microspheres of 74 m diameter, and compared to those computed from the MC simulation. The results showed that the mean phase shift (PS) deviation was 0.736 and the mean amplitude deviation was 42%. Quantitative changes in detected fluorescence phase-shift and modulation were investigated for microsphere diameter, volume fraction, refractive index, and fluorophore lifetime. We also found that even though the sensitivity of PS change in the presence of scattering was the same as the value without scattering, the values of PS were magnified due to the scattering effects.

Liang, Feng

2006-12-01T23:59:59.000Z

40

Electromagnetic soundings for geothermal resources in Dixie Valley, Nevada  

DOE Green Energy (OSTI)

An electromagnetic (EM) sounding survey was performed over a region encompassing the Dixie Valley geothermal field to map the subsurface resistivity in the geothermal field and the surrounding area. The EM survey, consisting of 19 frequency-domain depth soundings made with the LBL EM-60 system, was undertaken to explore a narrow region adjacent to the Stillwater Range to a depth of 2 to 3 km. Lithologic and well log resistivity information from well 66-21 show that for EM interpretation the section can be reduced to a three-layer model consisting of moderately resistive alluvial sediments, low resistivity lacustrine sediments, and high resistivity Tertiary volcanics and older rocks. This three layer model was used as a starting point in interpreting EM sounding data. Variations in resistivity and thickness provided structural information and clues to the accumulation of geothermal fluids. The interpreted soundings reveal a 1 to 1.5-km-deep low-resistivity zone spatially associated with the geothermal field. The shallow depth suggests that the zone detected is either fluid leakage or hydrothermal alteration, rather than high-temperature reservoir fluids. The position of the low-resistivity zone also conforms to changes in depth to the high resistivity basal layer, suggesting that faulting is a control on the location of productive intervals. 10 refs., 7 figs.

Wilt, M.J.; Goldstein, N.E.

1985-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Calculation of HVDC-converter harmonics in frequency domain with regard to asymmetries and comparison with time domain simulations  

SciTech Connect

In order to study the effects of large HVDC converters to the feeding ac networks, it is of importance to explain and to calculate harmonic phenomena which are a result of converter operation. During commissioning of real HVDC converters it could be seen, that harmonics resulting from unsymmetries in the system voltages or from unsymmetries in converter operation led to significant difficulties concerning the system design. For this reason, not only the effects of characteristic but also the effects of noncharacteristic converter harmonics must be taken into account. The aim is to describe the steady state harmonic behavior of the converter. The harmonic spectra are not determined by time domain analysis but instead the solution is found by frequency domain calculations. This can result in reduced calculation time in comparison to conventional fourier analysis of the time functions. The converter is interpreted as an amplitude modulator with voltage and current converter functions which describe the coupling of the dc circuit and the ac network through the converter. To verify the theory, comparison of frequency domain with time domain calculations were carried out.

Rittiger, J. [Siemens AG, Erlangen (Germany); Kulicke, B. [Technische Univ. Berlin (Germany)

1995-10-01T23:59:59.000Z

42

Enhanced Interpretation of Electromagnetic Signature Analysis for Large Machines  

Science Conference Proceedings (OSTI)

This project developed and applied frequency domain models to enhance interpretation of electromagnetic signature analysis (EMSA) for large electrical generators. The project's rationale was to provide a prediction of the native frequency response of the winding calculated from machine dimensions and design data so that the positions of the resonances would be known a priore. This procedure allowed augmentation of an EMSA spectrum at the characteristic resonant frequencies of the machine in the interpret...

2010-11-16T23:59:59.000Z

43

Wavelet-like bases for thin-wire integral equations in electromagnetics  

Science Conference Proceedings (OSTI)

In this paper, wavelets are used in solving, by the method of moments, a modified version of the thin-wire electric field integral equation, in frequency domain. The time domain electromagnetic quantities, are obtained by using the inverse discrete fast ... Keywords: 02.30.Rz, 02.60.Cb, 02.70.-c, 41.20.-q, 41.20.Jb, M-band wavelet transform, Method of moments, Preconditioning, Thin-wire integral equations in electromagnetics

E. Francomano; A. Tortorici; E. Toscano; G. Ala; F. Viola

2005-03-01T23:59:59.000Z

44

Electromagnetic Compatibility & Telecommunications  

Science Conference Proceedings (OSTI)

Directory of Accredited Laboratories. Electromagnetic Compatibility & Telecommunications. The Electromagnetic Compatability ...

2013-11-08T23:59:59.000Z

45

> REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < 1 Abstract--In this letter, a novel linear frequency-domain  

E-Print Network (OSTI)

--In this letter, a novel linear frequency-domain compensation (FDC) of the resonant cavity light emitting diode emitting diodes (RC-LED) have been largely adopted in POF communications with on-off-keying modulation insensitivity, which are extremely suitable for optical home networking [2]. The low-cost resonant cavity light

Recanati, Catherine

46

INTERPRETATION OF AIRBORNE ELECTROMAGNETIC AND MAGNETIC DATA IN THE 600 AREA  

SciTech Connect

As part of the 200-PO-1 Phase I geophysical surveys, Fugro Airborne Surveys was contracted to collect airborne electromagnetic (EM) and magnetic surveys of the Hanford Site 600 Area. Two helicopter survey systems were used with the HeliGEOTEM{reg_sign} time domain portion flown between June 19th and June 20th, 2008, and the RESOLVE{reg_sign} frequency domain portion was flown from June 29th to July 1st, 2008. Magnetic data were acquired contemporaneously with the electromagnetic surveys using a total-field cesium vapor magnetometer. Approximately 925 line kilometers (km) were flown using the HeliGEOTEM{reg_sign} II system and 412 line kilometers were flown using the RESOLVE{reg_sign} system. The HeliGEOTEM system has an effective penetration of roughly 250 meters into the ground and the RESOLVE system has an effective penetration of roughly 60 meters. Acquisition parameters and preliminary results are provided in SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site. Airborne data are interpreted in this report in an attempt to identify areas of likely preferential groundwater flow within the aquifer system based on the presence of paleochannels or fault zones. The premise for the interpretation is that coarser-grained intervals have filled in scour channels created by episodic catastrophic flood events during the late Pleistocene. The interpretation strategy used the magnetic field anomaly data and existing bedrock maps to identify likely fault or lineament zones. Combined analysis of the magnetic, 60-Hz noise monitor, and flight-altitude (radar) data were used to identify zones where EM response is more likely due to cultural interference and or bedrock structures. Cross-sectional and map view presentations of the EM data were used to identify more electrically resistive zones that likely correlate with coarser-grained intervals. The resulting interpretation identifies one major northwest-southeast trending preferential flowpath with several minor units running along a similar trend. This presumed path of preferential flow is compared with the tritium concentration levels observed for the 600 Area. Analysis of the magnetic field data shows the location of potential bedrock faults and lineaments which may influence the horizontal and vertical flow of water. Faults lying within, or in the vicinity of preferential groundwater flow paths may allow flow into or out of the otherwise confined basalt layers.

CUMMINS GD

2010-11-11T23:59:59.000Z

47

Electromagnetic soundings over a geothermal reservoir in Dixie Valley, Nevada  

DOE Green Energy (OSTI)

An electromagnetic (EM) sounding survey was performed over a region encompassing the Dixie Valley geothermal field with the purpose of mapping the subsurface resistivity in the geothermal field and its surroundings. The EM survey consisted of 19 frequency-domain depth soundings made with the EM-60 system using three separate horizontal-loop transmitters, and was designed to explore a narrow region adjacent to the Stillwater Range to a depth of 2 to 3 k. Most sounding curves could be fitted to three-layer resistivity models. The surface layer is moderately conductive (10 to 15 ohm-m), has a maximum thickness of 500 m, and consists mainly of alluvial fan and lake sediments. More conductive zones are associated with hydrothermally altered rocks; a resistivity high may be associated with siliceous hot spring deposits. The conductive second layer (2 to 5 ohm-m) varies in thickness from 400 to 800 m and thickens toward the center of the valley. This layer probably consists of lacustrine sediments saturated with saline waters. Local resistivity lows observed in the second layer may be related to elevated subsurface temperatures. This layer may act as a cap rock for the geothermal system. Resistivities of the third layer are high (50 to 100 ohm-m) except in a narrow 5-km band paralleling the range front. This low-resistivity zone, within volcanic rocks, correlates well in depth and location with reported zones of geothermal fluid production. It also seems to correlate with the western margin of a concealed graben structure previously inferred from other geophysical data.

Wilt, M.J.; Goldstein, N.E.

1983-04-01T23:59:59.000Z

48

Three-dimensional transient electromagnetic modeling in the Laplace Domain  

Science Conference Proceedings (OSTI)

In modeling electromagnetic responses, Maxwell's equations in the frequency domain are popular and have been widely used (Nabighian, 1994; Newman and Alumbaugh, 1995; Smith, 1996, to list a few). Recently, electromagnetic modeling in the time domain using the finite difference (FDTD) method (Wang and Hohmann, 1993) has also been used to study transient electromagnetic interactions in the conductive medium. This paper presents a new technique to compute the electromagnetic response of three-dimensional (3-D) structures. The proposed new method is based on transforming Maxwell's equations to the Laplace domain. For each discrete Laplace variable, Maxwell's equations are discretized in 3-D using the staggered grid and the finite difference method (FDM). The resulting system of equations is then solved for the fields using the incomplete Cholesky conjugate gradient (ICCG) method. The new method is particularly effective in saving computer memory since all the operations are carried out in real numbers. For the same reason, the computing speed is faster than frequency domain modeling. The proposed approach can be an extremely useful tool in developing an inversion algorithm using the time domain data.

Mizunaga, H.; Lee, Ki Ha; Kim, H.J.

1998-09-01T23:59:59.000Z

49

ELECTROMAGNETIC PUMP  

DOE Patents (OSTI)

This patent reiates to electromagnetic pumps for electricity-conducting fluids and, in particular, describes several modifications for a linear conduction type electromagnetic interaction pump. The invention resides in passing the return conductor for the current traversing the fiuid in the duct back through the gap in the iron circuit of the pump. Both the maximum allowable pressure and the efficiency of a linear conduction electromagnetic pump are increased by incorporation of the present invention.

Pulley, O.O.

1954-08-17T23:59:59.000Z

50

Estimating damping effectiveness of BPA`s thyristor controlled series capacitor by applying time and frequency domain methods to measured response  

Science Conference Proceedings (OSTI)

Recently, a 500-kV thyristor controlled series capacitor (TCSC) was installed in the Bonneville Power Administration system in the northwestern US. Extensive field testing has included modulation experiments to determine the effect of the TCSC on low-frequency oscillations. This paper discusses modulation procedures, analysis methods, and results for estimating the damping effectiveness of the TCSC. Modulation methods include driving the TCSC with step and random noise, and analysis techniques include time (Prony analysis) and frequency-domain identification. Results indicate that: (1) the TCSC can have significant impact on system dynamics; and (2) under a very small feedback gain, the TCSC provides measurable added damping.

Trudnowski, D.J.; Donnelly, M.K.; Hauer, J.F. [Pacific Northwest Lab., Richland, WA (United States)

1996-05-01T23:59:59.000Z

51

Tunable resonant sensing means to sense a particular frequency in a high energy charged particle beam and generate a frequency-domain signal in response  

DOE Patents (OSTI)

A frequency domain sensing system is disclosed for sensing the position of a high energy beam of charged particles traveling within a housing which comprises a plurality of sensing means positioned in the wall of the housing radially around the axis of the beam. Each of the sensing means further comprising a first electrode means of predetermined shape received in a bore in the housing to define a fixed capacitance and inductance means attached to the electrode to provide an inductance for the sensing means which will provide an LC circuit which will resonate at a predetermined frequency known to exist in the beam of charged particles. The sensing means are further provided with tuning means to vary the amount of said inductance to tune the sensing means to the predetermined frequency prior to transmission of the signal to signal detection circuitry.

Nakamura, Michiyuki; Nolan, M.L.

1986-09-22T23:59:59.000Z

52

Evaluation of airborne geophysical surveys for large-scale mapping of contaminated mine pools: draft final report  

SciTech Connect

Decades of underground coal mining has left about 5,000 square miles of abandoned mine workings that are rapidly filling with water. The water quality of mine pools is often poor; environmental regulatory agencies are concerned because water from mine pools could contaminate diminishing surface and groundwater supplies. Mine pools are also a threat to the safety of current mining operations. Conversely, mine pools are a large, untapped water resource that, with treatment, could be used for a variety of industrial purposes. Others have proposed using mine pools in conjunction with heat pumps as a source of heating and cooling for large industrial facilities. The management or use of mine pool water requires accurate maps of mine pools. West Virginia University has predicted the likely location and volume of mine pools in the Pittsburgh Coalbed using existing mine maps, structure contour maps, and measured mine pool elevations. Unfortunately, mine maps only reflect conditions at the time of mining, are not available for all mines, and do not always denote the maximum extent of mining. Since 1999, the National Energy Technology Laboratory (NETL) has been evaluating helicopter-borne, electromagnetic sensing technologies for the detection and mapping of mine pools. Frequency domain electromagnetic sensors are able to detect shallow mine pools (depth < 50 m) if there is sufficient contrast between the conductance of the mine pool and the conductance of the overburden. The mine pools (conductors) most confidently detected by this technology are overlain by thick, resistive sandstone layers. In 2003, a helicopter time domain electromagnetic sensor was applied to mined areas in southwestern Virginia in an attempt to increase the depth of mine pool detection. This study failed because the mine pool targets were thin and not very conductive. Also, large areas of the surveys were degraded or made unusable by excessive amounts of cultural electromagnetic noise that obscured the subtle mine pool anomalies. However, post-survey modeling suggested that thicker, more conductive mine pools might be detected at a more suitable location. The current study sought to identify the best time domain electromagnetic sensor for detecting mine pools and to test it in an area where the mine pools are thicker and more conductive that those in southwestern Virginia. After a careful comparison of all airborne time domain electromagnetic sensors (including both helicopter and fixed-wing systems), the SkyTEM system from Denmark was determined to be the best technology for this application. Whereas most airborne time domain electromagnetic systems were developed to find large, deep, highly conductive mineral deposits, the SkyTEM system is designed for groundwater exploration studies, an application similar to mine pool detection.

Geosciences Division, National Energy Technology Laboratory, US Department of Energy, Pittsburgh, PA; Hammack, R.W.

2006-12-28T23:59:59.000Z

53

Electromagnetic Leptogenesis  

E-Print Network (OSTI)

We present a new leptogenesis scenario, where the lepton asymmetry is generated by CP violating decays of heavy electroweak singlet neutrinos via electromagnetic dipole moment couplings to the ordinary light neutrinos. Akin to the usual scenario where the decays are mediated through Yukawa interactions, we have shown, by explicit calculations, that the desired asymmetry can be produced through the interference of the corresponding tree-level and one-loop decay amplitudes involving the effective dipole moment operators. We also find that the relationship of the leptogenesis scale to the light neutrino masses is similar to that for the standard Yukawa-mediated mechanism.

Bell, Nicole F; Law, Sandy S C

2008-01-01T23:59:59.000Z

54

Electromagnetic Leptogenesis  

E-Print Network (OSTI)

We present a new leptogenesis scenario, where the lepton asymmetry is generated by CP violating decays of heavy electroweak singlet neutrinos via electromagnetic dipole moment couplings to the ordinary light neutrinos. Akin to the usual scenario where the decays are mediated through Yukawa interactions, we have shown, by explicit calculations, that the desired asymmetry can be produced through the interference of the corresponding tree-level and one-loop decay amplitudes involving the effective dipole moment operators. We also find that the relationship of the leptogenesis scale to the light neutrino masses is similar to that for the standard Yukawa-mediated mechanism.

Nicole F. Bell; Boris J. Kayser; Sandy S. C. Law

2008-06-20T23:59:59.000Z

55

Cerenkov radio pulses from electromagnetic showers in the time domain  

Science Conference Proceedings (OSTI)

The electric field of the Cerenkov radio pulse produced by a single charged particle track in a dielectric medium is derived from first principles. An algorithm is developed to obtain the pulse in the time domain for numerical calculations. The algorithm is implemented in a Monte Carlo simulation of electromagnetic showers in dense media (specifically designed for coherent radio emission applications) as might be induced by interactions of ultrahigh energy neutrinos. The coherent Cerenkov radio emission produced by such showers is obtained simultaneously both in the time and frequency domains. A consistency check performed by Fourier transforming the pulse in time and comparing it to the frequency spectrum obtained directly in the simulations yields, as expected, fully consistent results. The reversal of the time structure inside the Cerenkov cone and the signs of the corresponding pulses are addressed in detail. The results, besides testing algorithms used for reference calculations in the frequency domain, shed new light into the properties of the radio pulse in the time domain. The shape of the pulse in the time domain is directly related to the depth development of the excess charge in the shower and its width to the observation angle with respect to the Cerenkov direction. This information can be of great practical importance for interpreting actual data.

Alvarez-Muniz, Jaime; Romero-Wolf, Andres; Zas, Enrique [Depto. de Fisica de Particulas and Instituto Galego de Fisica de Altas Enerxias, Universidade de Santiago de Compostela, 15782 Santiago de Compostela (Spain); Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States); Depto. de Fisica de Particulas and Instituto Galego de Fisica de Altas Enerxias, Universidad de Santiago de Compostela, 15782 Santiago de Compostela (Spain)

2010-06-15T23:59:59.000Z

56

Definition: Time-Domain Electromagnetics | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Time-Domain Electromagnetics Jump to: navigation, search Dictionary.png Time-Domain Electromagnetics Time-domain electromagnetic (TDEM) surveys are active-source soundings which provide information about the electrical structure of the shallow subsurface.[1] View on Wikipedia Wikipedia Definition Transient electromagnetics, (also time-domain electromagnetics / TDEM), is a geophysical exploration technique in which electric and magnetic fields are induced by transient pulses of electric current and the subsequent decay response measured. TEM / TDEM methods are generally able to determine subsurface electrical properties, but are also sensitive to subsurface magnetic properties in applications like UXO detection and

57

NVLAP Electromagnetic Compatibility & Telecommunications ...  

Science Conference Proceedings (OSTI)

Electromagnetic Compatibility & Telecommunications LAP. Welcome. This site has been established for new applicants ...

2013-07-30T23:59:59.000Z

58

Computer simulation of low-frequency electromagnetic data acquisition  

DOE Green Energy (OSTI)

Computer simulation of low frequency electromagnetic (LFEM) digital data acquisition in the presence of natural field noise demonstrates several important limitations and considerations. Without the use of a remote reference noise removal scheme it is difficult to obtain an adequate ratio of signal to noise below 0.1 Hz for frequency domain processing and below 0.3 Hz base frequency for time domain processing for a typical source-receiver configuration. A digital high-pass filter substantially facilitates rejection of natural field noise above these frequencies but, at lower frequencies where much longer stacking times are required, it becomes ineffective. Use of a remote reference to subtract natural field noise extends these low-frequency limits a decade, but this technique is limited by the resolution and dynamic range of the instrumentation. Gathering data in short segments so that natural field drift can be offset for each segment allows a higher gain setting to minimize dynamic range problems.

SanFilipo, W.A.; Hohmann, G.W.

1982-02-01T23:59:59.000Z

59

Investigation of electromagnetic welding  

E-Print Network (OSTI)

We propose several methodologies to study and optimize the electromagnetic process for Electromagnetic Forming (EMF) and Welding (EMW), thereby lowering the necessary process energy up to a factor of three and lengthening ...

Pressl, Daniel G. (Daniel Gerd)

2009-01-01T23:59:59.000Z

60

Interpretation of electromagnetic soundings in the Raft River geothermal  

Open Energy Info (EERE)

Interpretation of electromagnetic soundings in the Raft River geothermal Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: An electromagnetic (EM) controlled source survey was conducted in the Raft River Valley, near Malta, Idaho. The purpose of the survey was: to field test U.S. Geological Survey extra-low-frequency (ELF) equipment using a grounded wire source and receiver loop configuration (which is designed to measure the vertical magnetic field (Hz) at the loop center for various frequencies); to present an example of the EM sounding data and interpretations using a previously developed inversion program; and (3) to

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


61

Property:References | Open Energy Information  

Open Energy Info (EERE)

References References Jump to: navigation, search This is a property of type Text. Subproperties This property has the following 43 subproperties: A Active Seismic Techniques Aeromagnetic Survey Airborne Gravity Survey Audio-Magnetotellurics C Chemical Logging Compound and Elemental Analysis Controlled Source Audio MT Controlled Source Frequency-Domain Magnetics D DC Resistivity Survey (Dipole-Dipole Array) DC Resistivity Survey (Mise-Á-La-Masse) DC Resistivity Survey (Pole-Dipole Array) DC Resistivity Survey (Schlumberger Array) DC Resistivity Survey (Wenner Array) Direct-Current Resistivity Survey D cont. Downhole Techniques E Electrical Profiling Configurations Electrical Techniques Electromagnetic Techniques F Frequency-Domain Electromagnetic Survey G Geodetic Survey Geophysical Techniques

62

Power System Electromagnetic Compatibility  

Science Conference Proceedings (OSTI)

The potential for man-made electromagnetic interference has existed since the construction of the first electric power system. As the use of electricity expanded during the first few decades of the twentieth century, the number of sources of electromagnetic interference, as well as the number of receptors, burgeoned. With the proliferation of sources and receptors, the engineering study of electromagnetic interference--sometimes called radio noise, electrical noise, or radio-frequency interference--becam...

2000-12-19T23:59:59.000Z

63

Tunability enhanced electromagnetic wiggler  

DOE Patents (OSTI)

The invention discloses a wiggler used in synchrotron radiation sources and free electron lasers, where each pole is surrounded by at least two electromagnetic coils. The electromagnetic coils are energized with different amounts of current to provide a wide tunable range of the on-axis magnetic flux density, while preventing magnetic saturation of the poles. 14 figs.

Schlueter, R.D.; Deis, G.A.

1992-03-24T23:59:59.000Z

64

Electromagnetic Soundings At Raft River Geothermal Area (1977) | Open  

Open Energy Info (EERE)

Electromagnetic Soundings At Raft River Geothermal Area (1977) Electromagnetic Soundings At Raft River Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Electromagnetic Soundings At Raft River Geothermal Area (1977) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Electromagnetic Sounding Techniques Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis The purpose of the survey was: (1) to field test U.S. Geological Survey extra-low-frequency (ELF) equipment using a grounded wire source and receiver loop configuration (which is designed to measure the vertical magnetic field (Hz) at the loop center for various frequencies); (2) to present an example of the EM sounding data and interpretations using a

65

Microslots : scalable electromagnetic instrumentation  

E-Print Network (OSTI)

This thesis explores spin manipulation, fabrication techniques and boundary conditions of electromagnetism to bridge the macroscopic and microscopic worlds of biology, chemistry and electronics. This work is centered around ...

Maguire, Yael G., 1975-

2004-01-01T23:59:59.000Z

66

A Frequency-Domain Silence Noise Model  

E-Print Network (OSTI)

Abstract. This paper proposes a simple, computationally efficient 2-mixture model approach to discrimination between speech and background noise. It is directly derived from observations on real data, and can be used in a fully unsupervised manner, with the EM algorithm. A first application to sector-based, joint audio source localization and detection, using multiple microphones, confirms that the model can provide major enhancement. A second application to the single channel speech recognition task in a noisy environment yields major improvement on stationary noise and promising results on non-stationary noise. 2 IDIAPRR 05-13 1

Guillaume Lathoud A B; Guillaume Lathoud; Mathew Magimai. -doss; Bertrand Mesot

2005-01-01T23:59:59.000Z

67

Electromagnetic Compatibility from a Time-Frequency Perspective  

E-Print Network (OSTI)

Abstract In wireless communication, interference between two radio systems may occur when they operate at close frequency bands, sharing the same environment at the same time. Such systems coexist if both of them perform correctly in the presence of the other. To ensure their coexistence, Electromagnetic Compatibility (EMC) is used to specify rules within standardization bodies. According to current EMC standards, the radio spectrum has been divided into non-overlapping bands often with exclusive access. However, nowadays there is a proliferation of new digital systems sharing common frequency bands because the spectrum is a limited resource. Many of them are operating in unlicensed bands regulated by The International Telecommunications Union (ITU), for example the 2.45 GHz Industrial, Scientific and Medical (ISM) band. The frequency allocation is also changing with the emergence of digital systems and this is the case for white spaces in the broadcast television (TV) spectrum. To avoid high interference levels, it is necessary to consider some parameters related to signal variations, representing more accurately the environment. Some techniques have been proposed in the literature to reduce interference levels but they are applied to specific sharing studies. Hence, we evaluate in this paper the impact of time-frequency considerations for radio coexistence. We show that EMC studies are more precise and more representative of the reality when additional parameters relevant to the time domain are taken into account in the analysis framework. We illustrate these concepts through a specific study case. We evaluate the results for different system parameters, first considering that both of them occupy the same band and then assuming that they use overlapping but non-equal frequency bands. Index Terms Radio coexistence, electromagnetic compatibility, frequency-domain analysis, time-domain analysis.

Najett Neji; Raul De Lacerda; Alain Azoulay; Thierry Letertre

2013-01-01T23:59:59.000Z

68

Superconducting dipole electromagnet  

DOE Patents (OSTI)

A dipole electromagnet of especial use for bending beams in particle accelerators is wound to have high uniformity of magnetic field across a cross section and to decrease evenly to zero as the ends of the electromagnet are approached by disposing the superconducting filaments of the coil in the crescent-shaped nonoverlapping portions of two intersecting circles. Uniform decrease at the ends is achieved by causing the circles to overlap increasingly in the direction of the ends of the coil until the overlap is complete and the coil is terminated.

Purcell, John R. (San Diego, CA)

1977-07-26T23:59:59.000Z

69

Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of  

Open Energy Info (EERE)

Of Electromagnetic Methods Applied In Active Volcanic Areas Of Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States Details Activities (7) Areas (2) Regions (0) Abstract: A better understanding of active volcanic areas in the United States through electromagnetic geophysical studies received foundation from the many surveys done for geothermal exploration in the 1970's. Investigations by governmental, industrial, and academic agencies include (but are not limited to) mapping of the Cascades. Long Valley/Mono area, the Jemez volcanic field, Yellowstone Park, and an area in Colorado. For one example - Mt. Konocti in the Mayacamas Mountains, California - gravity,

70

Electromagnetic radiation detector  

DOE Patents (OSTI)

An electromagnetic radiation detector including a collimating window, a cathode member having a photoelectric emissive material surface angularly disposed to said window whereby radiation is impinged thereon at acute angles, an anode, separated from the cathode member by an evacuated space, for collecting photoelectrons emitted from the emissive cathode surface, and a negatively biased, high transmissive grid disposed between the cathode member and anode.

Benson, Jay L. (Albuquerque, NM); Hansen, Gordon J. (Albuquerque, NM)

1976-01-01T23:59:59.000Z

71

ELECTROMAGNETIC PROPERTIES OF SUPERCONDUCTORS  

SciTech Connect

A method of calculating the response of superconductors to weak electromagnetic fields is formulated. The response is generated from a single- particle Green's function, defined in the presence of an electromagnetic perturbation, that satisfies the conditions imposed by guauge invariance and charge conservation. The response function is thus itself explicitly gauge invariant and charge conserving. The single-particle Green-s function is obtained by making Gorkov's factorizatation of the tiio-partiele Green's funetion in the presence oi the external field. The sy'mmetry' properties of the approximation are used to simplify the calculatioa. This is trivially' carried out in the London limit. An economieal derivation is thus obtaiaed of Anderson's result thai the Bardeen, Cooper, and Sehrieffer quasi particle excitations must be supplemented by collective excitation in order to satisfy the conservation laws. (auth)

Ambegaokar, V.; Kadanoff, L.P.

1961-12-01T23:59:59.000Z

72

Banded electromagnetic stator core  

DOE Patents (OSTI)

A stator core for an electromagnetic pump includes a plurality of circumferentially adjoining groups of flat laminations disposed about a common centerline axis and collectively defining a central bore and a discontinuous outer perimeter, with adjacent groups diverging radially outwardly to form V-shaped gaps. An annular band surrounds the groups and is predeterminedly tensioned to clamp together the laminations, and has a predetermined flexibility in a radial direction to form substantially straight bridge sections between the adjacent groups. 5 figures.

Fanning, A.W.; Gonzales, A.A.; Patel, M.R.; Olich, E.E.

1994-04-05T23:59:59.000Z

73

Telluric Survey | Open Energy Information  

Open Energy Info (EERE)

Telluric Survey Telluric Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Telluric Survey Details Activities (3) Areas (3) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Sounding Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Cost Information Low-End Estimate (USD): 522.2252,222 centUSD

74

Electromagnetic Transients Program (EMTP) Workbook  

Science Conference Proceedings (OSTI)

High-speed electromagnetic transients are often the controlling factor in transmission system design and operation. This workbook provides case studies for introducing the basics of electromagnetic transient analysis. Sample problems demonstrate analyses of such transients with the EMTP computer code.BackgroundThe electromagnetic transients program (EMTP) is a versatile and efficient computer program that utilities worldwide use for analyzing high-speed power ...

1986-09-30T23:59:59.000Z

75

Physics Out Loud - Electromagnetic Force  

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

Detector Previous Video (Detector) Physics Out Loud Main Index Next Video (Electron Scattering) Electron Scattering Electromagnetic Force Cynthia Keppel, a nuclear physicist,...

76

Dangerous electromagnetic fields?  

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

Dangerous electromagnetic fields? Dangerous electromagnetic fields? Name: Tommy T Joseph Location: N/A Country: N/A Date: N/A Question: Why are electromagnetic fields supposedly dangerous? Replies: I assume you are asking about power line frequency (60 Hz) fields, since they have been in the news lately. No one knows for sure that they are dangerous. There have been a few studies which seem to show an association between how close homes are to power lines, and the incidence of childhood cancer (mostly leukemia) in children living (or who have lived) in those homes. Other similar studies have not found such an association. In all the studies which have found an association, none has actually measured the fields. Studies which actually have measured the fields find no association. There is no known mechanism for 60 Hz fields to cause cancer. Furthermore, the classic "dose-response relationship," that is, the greater the dose, the greater the response, does not seem to work here. Many laboratory studies have found that 60 Hz fields have an effect on organisms under certain conditions, but none of the observed effects can be convincingly related to a hazard. The bottom line is, no one knows for sure. It is important to realize that it is impossible to prove that anything is completely safe. My personal opinion is that, if there is a risk, it must be very small, or it wouldn't be so hard to prove. I can supply some good unbiased references if you are interested.

77

ON THE PHYSICS OF GALVANIC SOURCE ELECTROMAGNETIC GEOPHYSICAL METHODS FOR TERRESTRIAL AND MARINE EXPLORATION  

SciTech Connect

A numerical study was conducted to investigate the governing physics of galvanic source electromagnetic (EM) methods for terrestrial and marine exploration scenarios. The terrestrial exploration scenario involves the grounded electric dipole source EM (GESTEM) method and the examination of how the GESTEM method can resolve a thin resistive layer representing underground gas and/or hydrocarbon storage. Numerical modeling studies demonstrate that the loop transient EM (TEM) and magnetotelluric (MT) methods are insensitive to a thin horizontal resistor at depth because they utilize horizontal currents. In contrast to these standard EM methods, the GESTEM method generates both vertical and horizontal transient currents. The vertical transient current interacts with a thin horizontal resistor and causes charge buildup on its surface. These charges produce a measurable perturbation in the surface electric field at early time. The degree of perturbation depends on source waveform. When the GESTEM method is energized with step-off waveform, the perturbation due to a thin horizontal resistor is small. This is because the step-off waveform mainly consists of low frequency signals. An alternative is taking the time-derivative of the step-off responses to approximate the impulse response which includes higher frequency signals. In order to improve degree of perturbation especially due to a localized small 3-D resistor, the diffusion angle of the vertical transient current, 45 should be considered to make vertical currents coupled to a resistive target efficiently. The major drawback of the GESTEM method lies in the fact that GESTEM sounding can not be interpreted using 1-D inversion schemes if there is near-surface inhomogeneity. The marine exploration scenario investigates the physics of marine frequency-domain controlled source EM (FDCSEM) and time-domain controlled source EM (TDCSEM) methods to explore resistive hydrocarbon reservoirs in marine environments. Unlike the marine MT (MMT) method, these two methods are very sensitive to a thin hydrocarbon reservoir at depth because their sources generate vertical as well as horizontal currents. As for the FDCSEM method, the normalized EM peak response occurs where the airwave starts to dominate the seafloor EM response in the background model. This point is a function of source frequency, seawater depth and seafloor resistivity. The peak magnitude of the normalized EM response depends on whether the high concentration of vertical currents can reach and interact with the reservoir effectively. Noise levels of the EM receivers are important factors for successful FDCSEM and TDCSEM survey design. The major benefit of using magnetic field responses over electric ones is that the noise level of magnetic receiver theoretically allows for greater surface coverage compared to that of the electric receiver. Like the GESTEM method, the TDCSEM method also requires the use of a proper transient EM pulse such that the relatively high frequencies are produced. The impulse response of the TDCSEM method is characterized by two-path diffusion of the EM signal. The initial response is caused by faster signal diffusion through the less conductive seafloor, while the later arrivals result from slower diffusion through the more conductive seawater. Therefore, at larger separations, the effects of the seafloor and seawater are separable. This can be useful in reducing the airwave problem associated with the FDCSEM method in shallow marine environments.

David Alumbaugh and Evan Um

2007-06-27T23:59:59.000Z

78

Sandia National Laboratories: Electromagnetics: Main Page  

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

Brochure Adobe Logo Related Links Pulsed Power ELECTROMAGNETIC TECHNOLOGY AT SANDIA NATIONAL LABORATORIES Electromagnetics (EM) is the study of the nature and interaction of...

79

Superconductors Programs/Projects in Electromagnetics  

Science Conference Proceedings (OSTI)

Superconductors Programs/Projects in Electromagnetics. Superconductor Electromechanics. Contact. General Information ...

2010-10-05T23:59:59.000Z

80

Guidelines for Electromagnetic Interference Testing  

Science Conference Proceedings (OSTI)

One issue that has been problematic for new plant equipment and especially for digital instrumentation and control (I&C) systems in recent years is electromagnetic compatibility (EMC). Guidance from the Nuclear Regulatory Commission (NRC), EPRI, and various standards organizations has been evolving for many years and generally converging. However, the NRC's most recent guidance, Regulatory Guide 1.180 Revision 1, and EPRI's most recent EMI Guideline (Guidelines for Electromagnetic Interference Testing in...

2008-02-21T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Black Hole Thermodynamics and Electromagnetism  

E-Print Network (OSTI)

We show a strong parallel between the Hawking, Beckenstein black hole Thermodynamics and electromagnetism: When the gravitational coupling constant transform into the electromagnetic coupling constant, the Schwarzchild radius, the Beckenstein temperature, the Beckenstein decay time and the Planck mass transform to respectively the Compton wavelength, the Hagedorn temperature, the Compton time and a typical elementary particle mass. The reasons underlying this parallalism are then discussed in detail.

Burra G. Sidharth

2005-07-15T23:59:59.000Z

82

SOLAR NANTENNA ELECTROMAGNETIC COLLECTORS  

DOE Green Energy (OSTI)

This research explores a new efficient approach for producing electricity from the abundant energy of the sun. A nanoantenna electromagnetic collector (NEC) has been designed, prototyped, and tested. Proof of concept has been validated. The device targets mid-infrared wavelengths where conventional photovoltaic (PV) solar cells do not respond but is abundant in solar energy. The initial concept of designing NEC antennas was based on scaling of radio frequency antenna theory. This approach has proven unsuccessful by many due to not fully understanding and accounting for the optical behavior of materials in the THz region. Also until recent years the nanofabrication methods were not available to fabricate the optical antenna elements. We have addressed and overcome both technology barriers. Several factors were critical in successful implementation of NEC including: 1) frequency-dependent modeling of antenna elements, 2) selection of materials with proper THz properties and 3) novel manufacturing methods that enable economical large-scale manufacturing. The work represents an important step toward the ultimate realization of a low-cost device that will collect as well as convert this radiation into electricity, which will lead to a wide spectrum, high conversion efficiency, and low cost solution to complement conventional PVs.

Steven D. Novack; Dale K. Kotter; Dennis Slafer; Patrick Pinhero

2008-08-01T23:59:59.000Z

83

Definition: Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Ground Electromagnetic Techniques Jump to: navigation, search Dictionary.png Ground Electromagnetic Techniques Ground electromagnetic techniques measure electromagnetic fields in order to determine subsurface electrical resistivity with the earth surface as the observation point.[1] View on Wikipedia Wikipedia Definition The electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction, and gravitation. This force is described by electromagnetic fields, and has innumerable physical instances including the interaction of electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. The word

84

Visualisation of Tensor Time Domain Electromagnetic Data  

DOE Green Energy (OSTI)

Long Offset Time Domain Electromagnetic (LOTEM) measurements traditionally use a single current source. By using a second source, a tensor analysis technique analogous to that used in DC resistivity multiple-source bipole-dipole surveying, is possible. An instantaneous apparent resistivity tensor is defined as the relationship between the time varying (total) electric field and the DC half space current density vectors due to each source. If the sources are dipoles the three coordinate invariant apparent resistivities of the tensor are independent of source orientation. For a uniform half space, one of the invariants is virtually constant in time, deviating from the half space resistivity by a maximum of 6%. This method provides a way in which the complicated data set obtained during a tensor LOTEM survey can be presented in a compact and intelligible form, and has many advantages over conventional methods of analyzing LOTEM data particularly where the resistivity distribution is three dimensional (3D). Results from a 3D resistivity model of an idealized geothermal reservoir and outflow structure are used to illustrate the power of this analysis.

Caldwell, T.G.; Bibby, H.M.

1995-01-01T23:59:59.000Z

85

Iron Mountain Electromagnetic Results  

SciTech Connect

Iron Mountain Mine is located seventeen miles northwest of Redding, CA. After the completion of mining in early 1960s, the mine workings have been exposed to environmental elements which have resulted in degradation in water quality in the surrounding water sheds. In 1985, the EPA plugged ore stoops in many of the accessible mine drifts in an attempt to restrict water flow through the mine workings. During this process little data was gathered on the orientation of the stoops and construction of the plugs. During the last 25 years, plugs have begun to deteriorate and allow acidic waters from the upper workings to flow out of the mine. A team from Idaho National Laboratory (INL) performed geophysical surveys on a single mine drift and 3 concrete plugs. The project goal was to evaluate several geophysical methods to determine competence of the concrete plugs and orientation of the stopes.

Gail Heath

2012-07-01T23:59:59.000Z

86

Vlf Electromagnetic Investigations Of The Crater And Central Dome Of Mount  

Open Energy Info (EERE)

Vlf Electromagnetic Investigations Of The Crater And Central Dome Of Mount Vlf Electromagnetic Investigations Of The Crater And Central Dome Of Mount St Helens, Washington Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Vlf Electromagnetic Investigations Of The Crater And Central Dome Of Mount St Helens, Washington Details Activities (1) Areas (1) Regions (0) Abstract: A very low frequency (VLF) electromagnetic induction survey in the crater of Mount St. Helens has identified several electrically conductive structures that appear to be associated with thermal anomalies and ground water within the crater. The most interesting of these conductive structures lies beneath the central dome. It is probably a partial melt of dacite similar to that comprising the June 1981 lobe of the central dome. Author(s): James N. Towle

87

Survey Expectations  

E-Print Network (OSTI)

of Michigan and is known as the Michigan survey, with many other similar surveys conducted across OECD countries so as to provide up to date information on consumer expectations. Questions on expectations are also sometimes included in panel surveys... be formed, do of course make it possible to assess whether, or how far, such expectations are well-founded by comparing the experiences of individual households with their prior expectations. A key aspect of the Michigan survey, and of many other more recent...

Pesaran, M Hashem; Weale, Martin

2006-03-14T23:59:59.000Z

88

The ??? Amplitude in an External Homogeneous Electromagnetic  

E-Print Network (OSTI)

Neutrino-photon interactions in the presence of an external homogeneous constant electromagnetic field are studied. The ??? amplitude is calculated in an electromagnetic field of the general type, when the two field invariants are nonzero.

R. Shaisultanov

2000-01-01T23:59:59.000Z

89

Sympathetic Electromagnetically-Induced-Transparency Laser ...  

Science Conference Proceedings (OSTI)

Page 1. Sympathetic Electromagnetically-Induced-Transparency Laser Cooling of Motional Modes in an Ion Chain Y. Lin ...

2013-04-22T23:59:59.000Z

90

Unification of Gravity and Electromagnetism Revisited  

E-Print Network (OSTI)

Unification of gravity and electromagnetism based on a theory with an affine non-symmetric connection $\\Gamma^\\lambda_{\\mu\

Partha Ghose

2013-02-14T23:59:59.000Z

91

Current Sheet Canting in Pulsed Electromagnetic Accelerators  

E-Print Network (OSTI)

Current Sheet Canting in Pulsed Electromagnetic Accelerators Thomas Edward Markusic A DISSERTATION #12;Current Sheet Canting in Pulsed Electromagnetic Accelerators Prepared by: Thomas Edward Markusic of current sheet canting in pulsed electromagnetic accelerators is the de- parture of the plasma sheet

Choueiri, Edgar

92

The courts and electromagnetic fields  

Science Conference Proceedings (OSTI)

This article examines the recent development in eminent domain cases involving power transmission line rights of way, the issue of fear of the mythical buyer. The author feels that the fear of electrocution or of the possible cancer-inducing effects of electromagnetic fields is greatly influencing court decisions in these cases. The results could be more expensive rights of way acquisition by utilities.

Freeman, M. (Univ. of Pennsylvania, Philadelphia (United States))

1990-07-19T23:59:59.000Z

93

A current concern. [Electromagnetic fields  

SciTech Connect

This article examines the risk to homeowners of exposure to electromagnetic fields (EMF). Studies that link EMF to cancer are described and recommendations are given for prudent avoidance. Appliance manufacturers claim to have found no economically feasible way to shield emissions. Meanwhile the EPA's health effects research in this area has been suspended because of budgetary constraints.

Brinckerhoff, S.

1990-09-01T23:59:59.000Z

94

Survey Statisticians  

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

Survey Statisticians Survey Statisticians The U.S.Energy Information Administration (EIA) within the Department of Energy has forged a world-class information program that stresses quality, teamwork, and employee growth. In support of our program, we offer a variety of profes- sional positions, including the Survey Statistician, who measures the amounts of energy produced and consumed in the United States. Responsibilities: Survey Statisticians perform or participate in one or more of the following important functions: * Design energy surveys by writing questions, creating layouts and testing questions for clarity and accuracy. * Conduct energy surveys to include sending out and tracking survey responses, editing and analyzing data submis- sions and communicating with respondents to verify data.

95

Electromagnetic field of the large power cables and impact on the human health  

Science Conference Proceedings (OSTI)

In this work we survey our research on domain decomposition and related algorithms for large power electric cables and the impact on the human health. The equations that describe the behaviour of the fields in electromagnetic devices are coupled because ... Keywords: bioheat equation, coupled fields, electrical cables, finite element method

Daniela Crstea

2012-01-01T23:59:59.000Z

96

Electromagnetic field of the large power cables and interaction with the human body  

Science Conference Proceedings (OSTI)

In this work we survey our research on domain decomposition and related algorithms for large power electric cables and the impact on the human health. The equations that describe the behaviour of the fields in electromagnetic devices are coupled because ... Keywords: bioheat equation, coupled fields, electrical cables, finite element method

Daniela Crstea

2010-07-01T23:59:59.000Z

97

Digital Surveying Directional Surveying Specialists | Open Energy  

Open Energy Info (EERE)

Digital Surveying Directional Surveying Specialists Digital Surveying Directional Surveying Specialists Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Digital Surveying Directional Surveying Specialists Author Directional Surveying Specialists Published Publisher Not Provided, 2012 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Digital Surveying Directional Surveying Specialists Citation Directional Surveying Specialists. Digital Surveying Directional Surveying Specialists [Internet]. 2012. [cited 2013/10/08]. Available from: http://www.digitalsurveying.co.za/services/geophysical-borehole-surveying/overview/optical-televiewer/ Retrieved from "http://en.openei.org/w/index.php?title=Digital_Surveying_Directional_Surveying_Specialists&oldid=690244"

98

Definition: Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Profiling Techniques Electromagnetic Profiling Techniques Jump to: navigation, search Dictionary.png Electromagnetic Profiling Techniques Electromagnetic profiling techniques map lateral variations in subsurface resistivity.[1] View on Wikipedia Wikipedia Definition Exploration geophysics is the applied branch of geophysics which uses surface methods to measure the physical properties of the subsurface Earth, along with the anomalies in these properties, in order to detect or infer the presence and position of ore minerals, hydrocarbons, geothermal reservoirs, groundwater reservoirs, and other geological structures. Exploration geophysics is the practical application of physical methods (such as seismic, gravitational, magnetic, electrical and electromagnetic) to measure the physical properties of rocks, and in particular, to detect

99

Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques (Redirected from Electromagnetic Sounding Methods) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Sounding Techniques Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

100

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques (Redirected from Ground Electromagnetic Methods) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Ground Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Definition: Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Techniques Electromagnetic Techniques The objective of electromagnetic (EM) techniques is to image the electrical resistivity structure of the subsurface through the measurement of naturally- or artificially-generated electromagnetic fields.[1] View on Wikipedia Wikipedia Definition The electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction, and gravitation. This force is described by electromagnetic fields, and has innumerable physical instances including the interaction of electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. The word electromagnetism is a compound form of two Greek terms, ἢλεκτρον, ēlektron, "amber", and μαγνήτης, magnētēs, "magnet". The science

102

Questions and Answers - Which jobs use electromagnets?  

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

does adding coils to anelectromagnet make it stronger? does adding coils to an<br>electromagnet make it stronger? Previous Question (Why does adding coils to an electromagnet make it stronger?) Questions and Answers Main Index Next Question (Why is a non-permanent, but long lasting, magnet called a permanent magnet?) Why is a non-permanent, but long lasting,magnet called a permanent magnet? Which jobs use electromagnets? In today's world almost all jobs other than a goat herder use some type of electromagnet. They are everywhere. Electric motors are a type of electromagnet. Cars have dozens of electromagnets that move things or generate electricity. There are all sorts of interesting applications for larger electromagnets. The most obvious and biggest example is electricity. There are some interesting applications like dumping shredded garbage

103

SCO Survey  

Science Conference Proceedings (OSTI)

Survey on Future of NIST's Standards Information Services. June 5, 2013. *. Bookmark and Share. Contact: Clare Allocca 301-975-4359. ...

2013-06-05T23:59:59.000Z

104

Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(5) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electrical Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

105

Deep electromagnetic sounding in central Nevada  

DOE Green Energy (OSTI)

Sixteen shallow and deep controlled source electromagnetic soundings were performed in Buena Vista Valley, near Winnemucca, Nevada, to investigate an intra-basement conductor previously detected with magnetotellurics. The survey was carried out with the LBL EM-60 system using a remote magnetic reference for low-frequency geomagnetic noise cancellation, 100-m- and 2.8-km-diameter transmitter loops, and a minicomputer for in-field processing. EM soundings were made at distances from 0.5 to 30 km from three loops over the frequency range 0.02 to 500 Hz. Data were interpreted by means of 1-D inversions and the resulting layered models were pieced together to yield an approximate 2-D geoelectric model along the N-S axis of the valley. The EM soundings and one MT sounding show a 3 to 7 ohm-m zone at a depth of four to seven km. The conductor appears to be deepest at the northern end of the valley and shallowest beneath a basement ridge that seems to divide Buena Vista Valley into two basinal structures. Similar intra-basement conductors are also reported 50 to 75 miles south in the Carson Sink-Fallon areas, suggesting a common source, probably related to an anomalously hot, thin crust.

Wilt, M.; Goldstein, N.E.; Haught, J.R.; Morrison, H.F.

1982-04-01T23:59:59.000Z

106

Survey Consumption  

Gasoline and Diesel Fuel Update (EIA)

fsidentoi fsidentoi Survey Consumption and 'Expenditures, April 1981 March 1982 Energy Information Administration Wasningtoa D '" N """"*"""*"Nlwr. . *'.;***** -. Mik>. I This publication is available from ihe your COr : 20585 Residential Energy Consumption Survey: Consum ption and Expendi tures, April 1981 Through March 1982 Part 2: Regional Data Prepared by: Bruce Egan This report was prepared by the Energy Information Administra tion, the independent statistical

107

Category:Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electromagnetic Sounding Techniques page? For detailed information on Electromagnetic Sounding Techniques, click here. Category:Electromagnetic Sounding Techniques Add.png Add a new Electromagnetic Sounding Techniques Technique Subcategories This category has only the following subcategory. M [×] Magnetotelluric Techniques‎ 1 pages Pages in category "Electromagnetic Sounding Techniques" The following 2 pages are in this category, out of 2 total. M Magnetotelluric Techniques T Time-Domain Electromagnetics Retrieved from "http://en.openei.org/w/index.php?title=Category:Electromagnetic_Sounding_Techniques&oldid=689837"

108

Electromagnetic Transients Program (EMTP) Application Guide  

Science Conference Proceedings (OSTI)

The electromagnetic transients program is a versatile computer program that utilities worldwide use to analyze high-speed power system transients. This application guide provides procedures and data to assist engineers experienced in electromagnetic transient analysis based on EMTP.BackgroundThe electromagnetic transients program (EMTP), developed in the early 1970s by the Bonneville Power Administration (BPA), has been widely used for transient analysis. To ...

1986-12-08T23:59:59.000Z

109

Climate Survey  

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

Operations Employee Operations Employee Climate Survey March 2009 Acknowledgements The Berkeley Lab Survey Team consisted of the following: Jim Krupnick, Sponsor Vera Potapenko, Project Lead Karen Ramorino, Project Manager Chris Paquette, MOR Associates Alexis Bywater, MOR Associates MOR Associates, an external consulting firm, acted as project manager for this effort, analyzing the data and preparing this report. MOR Associates specializes in continuous improve- ment, strategic thinking and leadership development. MOR Associates has conducted a number of large-scale surveys for organizations in higher education, including MIT, Stanford, the University of Chicago, and others. MOR Associates, Inc. 462 Main Street, Suite 300 Watertown, MA 02472 tel: 617.924.4501

110

EM_GroundwaterSurveyRport_formatted.doc  

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

81006 81006 WILLOWSTICK TECHNOLOGIES LLC.: ELECTROMAGNETIC GROUNDWATER SURVEY: A demonstration of an Electromagnetic Groundwater Survey to Identify Flowpaths of Injected Water in the Shannon Sandstone, Naval Petroleum Reserve No. 3, Teapot Dome Field, Wyoming Final Report for the Period of July 26 - November 1, 2005 Date Completed: May 19, 2006 By Brian Black Prepared for the United States Department of Energy Office of Fossil Energy Work performed under Rocky Mountain Oilfield Testing Center (RMOTC) CRADA 2005-060 This document may contain protected CRADA information produced under CRADA no. 2005-060 and is not to be further disclosed for a period of 5 years from the date it was produced except as expressly provided for in the CRADA

111

Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Profiling Techniques Electromagnetic Profiling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Profiling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

112

Detection of electromagnetic waves using MEMS antennas  

SciTech Connect

We describe the design, fabrication and characterization of simple micromechanical structures that are capable of sensing static electric time varying electromagnetic fields. Time varying electric field sensing is usually achieved using an electromagnetic antenna and a receiver. However, these antenna-based approaches do not exhibit high sensitivity over a broad frequency (or wavelength) range. An important aspect of the present work is that, in contrast to traditional antennas, the dimensions of these micromechanical oscillators can be much smaller than the wavelength of the electromagnetic wave. We characterized the fabricated micromechanical oscillators by measuring their responses to time varying electric and electromagnetic fields.

Lavrik, Nickolay V [ORNL; Tobin, [Oak Ridge National Laboratory (ORNL); Bowland, Landon T [ORNL

2011-01-01T23:59:59.000Z

113

Crosswell Electromagnetic Resistivity Imaging: Illuminating the Reservior |  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Crosswell Electromagnetic Resistivity Imaging: Illuminating the Reservior Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Crosswell Electromagnetic Resistivity Imaging: Illuminating the Reservior Published Middle East Asia Reservior Reviiew, 2006 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Crosswell Electromagnetic Resistivity Imaging: Illuminating the Reservior Citation Crosswell Electromagnetic Resistivity Imaging: Illuminating the Reservior [Internet]. 2006. Middle East Asia Reservior Reviiew. [cited 2013/10/22]. Available from: http://www.slb.com/~/media/Files/resources/mearr/num7/illuminating_reservoir.pdf Retrieved from

114

Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Sounding Techniques Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

115

Time-Domain Electromagnetics | Open Energy Information  

Open Energy Info (EERE)

Time-Domain Electromagnetics Time-Domain Electromagnetics Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Time-Domain Electromagnetics Details Activities (10) Areas (10) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Sounding Techniques Information Provided by Technique Lithology: Detection of rock units or geological features with contrasting apparent resistivity. Stratigraphic/Structural: Structural information may be inferred from TDEM data. Hydrological: Hydrological information such as depth to groundwater table may be determined. Thermal: Extent of hydrothermal alteration mineralogy may be inferred. Cost Information

116

Definition: Electromagnetic Sounding Techniques | Open Energy...  

Open Energy Info (EERE)

Sounding Techniques Electromagnetic soundings aim to map the distribution of electrical resistivity as a function of depth.1 References http:www.amazon.com...

117

22.105 Electromagnetic Interactions, Fall 1998  

E-Print Network (OSTI)

Principles and applications of electromagnetism, starting from Maxwell's equations, with emphasis on phenomena important to nuclear engineering and radiation sciences. Solution methods for electrostatic and magnetostatic ...

Hutchinson, I. H. (Ian H.)

118

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Ground Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png

119

Algebraic sub-structuring for electromagnetic applications  

E-Print Network (OSTI)

Li, I. Malik, W. M i , C. Ng, and M . Wolf. ElectromagneticP. Husbands, and E. G. Ng. An Alge- braic Sub-structuring

2004-01-01T23:59:59.000Z

120

Property:DataAcquisition | Open Energy Information  

Open Energy Info (EERE)

DataAcquisition DataAcquisition Jump to: navigation, search Property Name DataAcquisition Property Type Text Description Information on acquisition, including both collection and lists of data repositories. Subproperties This property has the following 27 subproperties: A Active Seismic Techniques Aeromagnetic Survey C Controlled Source Frequency-Domain Magnetics Core Analysis D Direct-Current Resistivity Survey E Electrical Techniques F FLIR FMI Log Frequency-Domain Electromagnetic Survey G Ground Gravity Survey Ground Magnetics H Hand-held X-Ray Fluorescence (XRF) I Isotopic Analysis- Fluid Isotopic Analysis- Rock M Magnetotellurics Mud Logging P PSInSAR R Radar Reflection Survey R cont. Refraction Survey S SRT Self Potential Step-out Well Stereo Satellite Imagery T Telluric Survey Time-Domain Electromagnetics

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

VLBI surveys  

E-Print Network (OSTI)

Systematic surveys of astronomical objects often lead to discoveries, but always provide invaluable information for statistical studies of well-defined samples. They also promote follow-up investigations of individual objects or classes. Surveys using a yet unexplored observing wavelength, a novel technique or a new instrument are of special importance. Significantly improved observing parameters (e.g. sensitivity, angular resolution, monitoring capability) provide new insight into the morphological and physical properties of the objects studied. I give a brief overview of the important Very Long Baseline Interferometry (VLBI) imaging surveys conducted in the past. A list of surveys guides us through the developments up until the present days. I also attempt to show directions for the near future.

S. Frey

2006-11-08T23:59:59.000Z

122

Electromagnetic weak turbulence theory revisited  

SciTech Connect

The statistical mechanical reformulation of weak turbulence theory for unmagnetized plasmas including fully electromagnetic effects was carried out by Yoon [Phys. Plasmas 13, 022302 (2006)]. However, the wave kinetic equation for the transverse wave ignores the nonlinear three-wave interaction that involves two transverse waves and a Langmuir wave, the incoherent analogue of the so-called Raman scattering process, which may account for the third and higher-harmonic plasma emissions. The present paper extends the previous formalism by including such a term.

Yoon, P. H. [IPST, University of Maryland, College Park, Maryland 20742 (United States); Ziebell, L. F. [Instituto de Fisica, UFRGS, Porto Alegre, RS (Brazil); Gaelzer, R.; Pavan, J. [Instituto de Fisica e Matematica, UFPel, Pelotas, RS (Brazil)

2012-10-15T23:59:59.000Z

123

Frequency domain model-based intracranial pressure estimation  

E-Print Network (OSTI)

Elevation of intracranial pressure (ICP), the pressure of the fluid surrounding the brain, can require urgent medical attention. Current methods for determining ICP are invasive, require neurosurgical expertise, and can ...

Hwang, Irena T. (Irena Tammy)

2012-01-01T23:59:59.000Z

124

Controlled Source Frequency-Domain Magnetics At Salt Wells Area...  

Open Energy Info (EERE)

geothermal fluid flow at the site. Details of the antennaelectrode configuration and magnetic field sensor station spacing are reported by Montgomery et al. (2005). After raw data...

125

A frequency domain finite element model for tidal circulation  

E-Print Network (OSTI)

A highly efficient finite element model has been developed for the numerical prediction of depth average circulation within small scale embayments which are often characterized by irregular boundaries and bottom topography.

Westerink, Joannes J.

1985-01-01T23:59:59.000Z

126

Optical frequency domain imaging of human retina and choroid  

E-Print Network (OSTI)

Optical coherence tomography (OCT) has emerged as a practical noninvasive technology for imaging the microstructure of the human eye in vivo. Using optical interferometry to spatially-resolve backreflections from within ...

Lee, Edward Chin Wang

2006-01-01T23:59:59.000Z

127

Reduced bandwidth frequency domain equalization for underwater acoustic communications  

E-Print Network (OSTI)

Two challenges facing adaptive decision feedback equalizers (DFEs) in the underwater acoustic channel are those of the channel changing too rapidly to allow for the stable adaptation of the number of coefficients required ...

Wornell, Gregory W.

128

Journal of Computational Acoustics, FREQUENCY DOMAIN WAVE PROPAGATION MODELLING  

E-Print Network (OSTI)

#11;ect de gas, brine or oil and gas-brine or gas-oil pore uids on seismic velocities. Numerical IN EXPLORATION SEISMOLOGY PATRICIA M. GAUZELLINO, JUAN E. SANTOS #3; Departamento de Geof#16;sica Aplicada

Sheen, Dongwoo

129

Category:Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Ground Electromagnetic Techniques page? For detailed information on Ground Electromagnetic Techniques, click here. Category:Ground Electromagnetic Techniques Add.png Add a new Ground Electromagnetic Techniques Technique Subcategories This category has the following 2 subcategories, out of 2 total. E [×] Electromagnetic Profiling Techniques‎ 1 pages [+] Electromagnetic Sounding Techniques‎ (1 categories) 2 pages Pages in category "Ground Electromagnetic Techniques" The following 2 pages are in this category, out of 2 total. E Electromagnetic Profiling Techniques Electromagnetic Sounding Techniques Retrieved from "http://en.openei.org/w/index.php?title=Category:Ground_Electromagnetic_Techniques&oldid=689834"

130

Electromagnetic energy within magnetic spheres  

E-Print Network (OSTI)

Consider that an incident plane wave is scattered by a homogeneous and isotropic magnetic sphere of finite radius. We determine, by means of the rigorous Mie theory, an exact expression for the time-averaged electromagnetic energy within this particle. For magnetic scatterers, we find that the value of the average internal energy in the resonance picks is much larger than the one associated with a scatterer with the same nonmagnetic medium properties. This result is valid even, and specially, for low size parameter values. Expressions for the contributions of the radial and angular field components to the internal energy are determined. For the analytical study of the weak absorption regime, we derive an exact expression for the absorption cross section in terms of the magnetic Mie internal coefficients. We stress that although the electromagnetic scattering by particles is a well-documented topic, almost no attention has been devoted to magnetic scatterers. Our aim is to provide some new analytical results, which can be used for magnetic particles, and empha- size the unusual properties of the magnetic scatters, which could be important in some applications.

Tiago Jose Arruda; Alexandre Souto Martinez

2010-10-14T23:59:59.000Z

131

Electromagnetic form factors of hadrons  

SciTech Connect

A vector meson dominance model of the electromagnetic form factors of hadrons is developed which is based on the use of unstable particle propagators. Least-square fits are made to the proton, neutron, pion and kaon form factor data in both the space and time-like regions. A good fit to the low-energy nucleon form factor data is obtained using only rho, $omega$, and phi dominance, and leads to a determination of the vector meson resonance parameters in good agreement with experiment. The nucleon-vector meson coupling constants obey simple sum rules indicating that there exists no hard core contribution to the form factors within theoretical uncertainties. The prediction for the electromagnetic radii of the proton is in reasonable agreement with recent experiments. The pion and kaon charge form factors as deduced from the nucleon form factors assuming vector meson universality are compared to the data. The pion form factor agrees with the data in both the space and time-like regions. The pion charge radius is in agreement with the recent Dubna result, but the isovector P-wave pion-pion phase shift calculated from the theory disagrees with experiment. A possible contribution to the form factors from a heavy rho meson is also evaluated. (auth)

Zidell, V.S.

1976-01-01T23:59:59.000Z

132

Definition: Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys Jump to: navigation, search Dictionary.png Near Infrared Surveys Near infrared surveys refer to multi- and hyperspectral data collected in the region just outside wavelengths detectable by the human eye. Near infrared wavelengths are generally considered to be between approximately 0.75-1.4 micrometers. View on Wikipedia Wikipedia Definition Infrared (IR) light is electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometres (nm) to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz, and includes most of the thermal radiation emitted by objects near room temperature. Infrared light is emitted or absorbed by molecules

133

Electromagnetic Transients Program (EMTP) Workbook II  

Science Conference Proceedings (OSTI)

The complex and versatile EMTP computer program can help utilities analyze electromagnetic transients, which affect the design and operation of power systems. A workbook published in 1986 introduced basic EMTP concepts.To guide advanced users, EPRI and the EMTP Development Coordination Group cosponsored the preparation of three workbooks on complicated program applications.BackgroundStudies of electromagnetic transients were traditionally performed with special ...

1989-07-18T23:59:59.000Z

134

Electromagnetic Transients Program (EMTP) Workbook IV  

Science Conference Proceedings (OSTI)

The complex and versatile EMTP computer program can help utilities analyze electromagnetic transients, which affect the design and operation of power systems. A workbook published in 1986 introduced basic EMTP concepts. To guide advanced users, EPRI and the EMTP Development Coordination Group cosponsored the preparation of three workbooks on complicated program applications.BackgroundStudies of electromagnetic transients were traditionally performed with special ...

1989-07-18T23:59:59.000Z

135

Electromagnetic Transients Program (EMTP) Workbook III  

Science Conference Proceedings (OSTI)

The complex and versatile EMTP computer program can help utilities analyze electromagnetic transients, which affect the design and operation of power systems. A workbook published in 1986 introduced basic EMTP concepts.To guide advanced users, EPRI and the EMTP Development Coordination Group cosponsored the preparation of three workbooks on complicated program applications.BackgroundStudies of electromagnetic transients were traditionally performed with special ...

1989-07-06T23:59:59.000Z

136

Narrow field electromagnetic sensor system and method  

DOE Patents (OSTI)

A narrow field electromagnetic sensor system and method of sensing a characteristic of an object provide the capability to realize a characteristic of an object such as density, thickness, or presence, for any desired coordinate position on the object. One application is imaging. The sensor can also be used as an obstruction detector or an electronic trip wire with a narrow field without the disadvantages of impaired performance when exposed to dirt, snow, rain, or sunlight. The sensor employs a transmitter for transmitting a sequence of electromagnetic signals in response to a transmit timing signal, a receiver for sampling only the initial direct RF path of the electromagnetic signal while excluding all other electromagnetic signals in response to a receive timing signal, and a signal processor for processing the sampled direct RF path electromagnetic signal and providing an indication of the characteristic of an object. Usually, the electromagnetic signal is a short RF burst and the obstruction must provide a substantially complete eclipse of the direct RF path. By employing time-of-flight techniques, a timing circuit controls the receiver to sample only the initial direct RF path of the electromagnetic signal while not sampling indirect path electromagnetic signals. The sensor system also incorporates circuitry for ultra-wideband spread spectrum operation that reduces interference to and from other RF services while allowing co-location of multiple electronic sensors without the need for frequency assignments. 12 figs.

McEwan, T.E.

1996-11-19T23:59:59.000Z

137

Noninvasive valve monitor using alternating electromagnetic field  

SciTech Connect

One or more electrical coils are carefully located on the outside of a valve body. An alternating current passing through the coil(s) results in an alternating electromagnetic field being transmitted into the valve body and valve internals. The electromagnetic field varies in intensity and polarity in the valve. As the position of a valve internal part is changed, the electromagnetic field throughout the valve body and its internals is altered. A passive receiver coil carefully located on the outside of the valve body detects the intensity of the electromagnetic field at that location as an induced electrical voltage in the coil. With the change in position of the valve internal part, there is a corresponding change in the induced voltage as a result of the alteration in the alternating electromagnetic field at that location. Changes in the voltage provide an indication of the position and motion of valve internals.

Eissenberg, David M. (Oak Ridge, TN); Haynes, Howard D. (Knoxville, TN); Casada, Donald A. (Knoxville, TN)

1993-01-01T23:59:59.000Z

138

Property:StratInfo | Open Energy Information  

Open Energy Info (EERE)

StratInfo StratInfo Jump to: navigation, search Property Name StratInfo Property Type Text Subproperties This property has the following 82 subproperties: 2 2-M Probe Survey A Active Seismic Methods Airborne Electromagnetic Survey Analytical Modeling C Caliper Log Cation Geothermometers Cement Bond Log Chemical Logging Compound and Elemental Analysis Conceptual Model Controlled Source Frequency-Domain Magnetics Cuttings Analysis D Data Acquisition-Manipulation Data Techniques Data and Modeling Techniques Drilling Methods E Earth Tidal Analysis Electric Micro Imager Log Electromagnetic Sounding Methods Elemental Analysis with Fluid Inclusion F FLIR Flow Test Fluid Inclusion Analysis Fluid Lab Analysis Formation Testing Techniques Frequency-Domain Electromagnetic Survey G Gas Geothermometry

139

Low frequency electromagnetic prospecting system. [Grass Valley, KGRA  

DOE Green Energy (OSTI)

A prototype portable electromagnetic sounding system was assembled and depth sounding survey was conducted in Grass Valley, Nevada, as a part of a program to evaluate geophysical techniques in geothermal exploration. A horizontal loop transmitter of radius 50 meters operating between .01 Hz and 100 Hz was used in conjunction with a SQUID magnetometer. A digital synchronous detector was used for on site processing of magnetometer output. This detector allowed useful data acquisition with transmitter-receiver separation of up to 2 km with power requirements of less than 72 watts. Conductive sediments (1 to 10 ohm-m) of thicknesses of up to 1.5 km were well resolved with this system, and the interpreted sections compared very well with dc resistivity measurements made with much heavier equipment and larger arrays in the same area.

Jain, B.K.

1978-04-01T23:59:59.000Z

140

JOM Salary Survey - TMS  

Science Conference Proceedings (OSTI)

JOM Salary Survey. This survey is currently closed. Please contact the author of this survey for further assistance. Javascript is required for this site to function,...

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Nonlocal theory of electromagnetic wave decay into two electromagnetic waves in a rippled density plasma channel  

SciTech Connect

Parametric decay of a large amplitude electromagnetic wave into two electromagnetic modes in a rippled density plasma channel is investigated. The channel is taken to possess step density profile besides a density ripple of axial wave vector. The density ripple accounts for the momentum mismatch between the interacting waves and facilitates nonlinear coupling. For a given pump wave frequency, the requisite ripple wave number varies only a little w.r.t. the frequency of the low frequency decay wave. The radial localization of electromagnetic wave reduces the growth rate of the parametric instability. The growth rate decreases with the frequency of low frequency electromagnetic wave.

Sati, Priti; Tripathi, V. K. [Indian Institute of Technology, Hauz Khas, Delhi 110054 (India)

2012-12-15T23:59:59.000Z

142

Magnesium Metal Matrix Nanocomposites By Electromagnetic ...  

Science Conference Proceedings (OSTI)

EMAT transforms electromagnetic energy into high intensity sonication to induce ... In the current work, the physics of acoustic production, the initial conditions of ... Department of Energy's Energy Efficiency and Renewable Energy Industrial...

143

Do you know what an electromagnet is?  

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

Do you know what an electromagnet is? Boy did you come to the right place and ask the right question. Jefferson Lab is magnet central to the world. Several of the world's most...

144

An Acoustic Doppler and Electromagnetic Velocity Profiler  

Science Conference Proceedings (OSTI)

A freely failing current meter called the Absolute Velocity Profiler (AVP) is described. This profiler is an expansion of a previously developed instrument, the Electro-Magnetic Velocity Profiler (EMVP), with the additional capability of acoustic ...

Thomas B. Sanford; Robert G. Driver; John H. Dunlap

1985-06-01T23:59:59.000Z

145

SP-100 thermoelectric-electromagnetic pump review  

DOE Green Energy (OSTI)

This report contains vugraphs of a presentation on thermoelectric-electromagnetic pumps. It contains: engineering drawings; summary of rectangular TEMP results and comparison with GE predictions; and results of optimization study.

NONE

1988-12-31T23:59:59.000Z

146

Advances in non-planar electromagnetic prototyping  

E-Print Network (OSTI)

The advent of metamaterials has introduced new ways to manipulate how electromagnetic waves reflect, refract and radiate in systems where the range of available material properties now includes negative permittivity, ...

Ehrenberg, Isaac M

2013-01-01T23:59:59.000Z

147

Electromagnetic Pulse (EMP) and the Power Grid  

Science Conference Proceedings (OSTI)

Thisdocument provides background and an introduction to the topic of electromagnetic pulse (EMP, including high-altitude EMP or HEMP) for stakeholders concerned about potential damage to power grid infrastructures.

2013-08-21T23:59:59.000Z

148

Dynamic programming applied to electromagnetic satellite actuation  

E-Print Network (OSTI)

Electromagnetic formation flight (EMFF) is an enabling technology for a number of space mission architectures. While much work has been done for EMFF control for large separation distances, little work has been done for ...

Eslinger, Gregory John

2013-01-01T23:59:59.000Z

149

Electrical wire insulation and electromagnetic coil  

DOE Patents (OSTI)

An electromagnetic coil for high temperature and high radiation application in which glass is used to insulate the electrical wire. A process for applying the insulation to the wire is disclosed which results in improved insulation properties.

Bich, George J. (Penn Hills, PA); Gupta, Tapan K. (Monroeville, PA)

1984-01-01T23:59:59.000Z

150

Electrical, electromagnetic, and magnetotelluric methods | Open Energy  

Open Energy Info (EERE)

Electrical, electromagnetic, and magnetotelluric methods Electrical, electromagnetic, and magnetotelluric methods Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Electrical, electromagnetic, and magnetotelluric methods Abstract Application of electrical methods began with Robert W. Fox's 1830 observation of self potentials associated with copper vein deposits in Cornwall. Conrad Schlumberger introduced the direct current equal potential line resistivity method in 1912. Harry W. Conklin received the first patents on the electromagnetic (EM) method in 1917. From these beginnings, the history of the development of the resistivity induced-polarization (IP), magnetotelluric and EM methods are traced to the present time. It is of interest to note that application of electrical methods flourished from

151

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set.

Crow, James T. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

152

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set.

Crow, James Terry (Albuquerque, NM)

1998-01-01T23:59:59.000Z

153

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially cancelling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set.

Crow, James T. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

154

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method are disclosed for generating homogeneous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set. 26 figs.

Crow, J.T.

1997-06-24T23:59:59.000Z

155

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method for generating homogeneous electromagnetic fields within a volume is disclosed. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented mirror symmetrically about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set. 39 figs.

Crow, J.T.

1998-02-10T23:59:59.000Z

156

Generating highly uniform electromagnetic field characteristics  

DOE Patents (OSTI)

An apparatus and method are disclosed for generating homogeneous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial gradient, or higher order radial derivative. The invention comprises conductive pathways oriented about a desired region of homogeneity. A corresponding apparatus and method is provided for substantially canceling the electromagnetic field outside of the apparatus, comprising a second set of conductive pathways placed outside the first set. 55 figs.

Crow, J.T.

1998-05-05T23:59:59.000Z

157

Definition: Telluric Survey | Open Energy Information  

Open Energy Info (EERE)

Telluric Survey Telluric Survey Jump to: navigation, search Dictionary.png Telluric Survey Telluric currents, or earth currents, are generated through electromagnetic induction processes due to natural, passive geomagnetic micropulsations. The measurement of telluric currents enables determination of the strata thickness and resistivity profile with depth.[1] View on Wikipedia Wikipedia Definition A telluric current (from Latin tellūs, "earth"), or Earth current, is an electric current which moves underground or through the sea. Telluric currents result from both natural causes and human activity, and the discrete currents interact in a complex pattern. The currents are extremely low frequency and travel over large areas at or near the surface of Earth. References

158

Electromagnetic fields in cased borehole  

DOE Green Energy (OSTI)

Borehole electromagnetic (EM) measurements, using fiberglass-cased boreholes, have proven useful in oil field reservoir characterization and process monitoring (Wilt et al., 1995). It has been presumed that these measurements would be impossible in steel-cased wells due to the very large EM attenuation and phase shifts. Recent laboratory and field studies have indicated that detection of EM signals through steel casing should be possible at low frequencies, and that these data provide a reasonable conductivity image at a useful scale. Thus, we see an increased application of this technique to mature oilfields, and an immediate extension to geothermal industry as well. Along with the field experiments numerical model studies have been carried out for analyzing the effect of steel casing to the EM fields. The model used to be an infinitely long uniform casing embedded in a homogeneous whole space. Nevertheless, the results indicated that the formation signal could be accurately recovered if the casing characteristics were independently known (Becker et al., 1998; Lee el al., 1998). Real steel-cased wells are much more complex than the simple laboratory models used in work to date. The purpose of this study is to develop efficient numerical methods for analyzing EM fields in realistic settings, and to evaluate the potential application of EM technologies to cross-borehole and single-hole environment for reservoir characterization and monitoring.

Lee, Ki Ha; Kim, Hee Joon; Uchida, Toshihiro

2001-07-20T23:59:59.000Z

159

Combined Borehole Seismic and Electromagnetic Inversion For High-Resolution Petrophysical Assessment Of Hydocarbon Reservoirs  

Science Conference Proceedings (OSTI)

This report summarizes the work performed between January 2005 and December 2007, under DOE research contract DE-FC26-04NT15507. The project is was performed by the Center for Petroleum and Geosystems Engineering of The University of Texas at Austin and Lawrence Berkeley National Laboratory under the auspices of the National Energy Technology Office (NETL) and the Strategic Center for Natural Gas and Oil (SCNGO). During the three-year project, we developed new methods to combine borehole sonic and electromagnetic (EM) measurements for the improved assessment of elastic and petrophysical properties of rock formations penetrated by a well. Sonic measurements consisted of full waveform acoustic amplitudes acquired with monopole and dipole sources, whereas EM measurements consisted of frequency-domain voltages acquired with multi-coil induction systems. The combination of sonic and EM measurements permitted the joint estimation of elastic and petrophysical properties in the presence of mud-filtrate invasion. It was conclusively shown that the combined interpretation of sonic and EM measurements reduced non-uniqueness in the estimation of elastic and petrophysical properties and improved the spatial resolution of the estimations compared to estimations yielded separately from the two types of measurements. Moreover, this approach enabled the assessment of dynamic petrophysical properties such as permeability, as it incorporated the physics of mud-filtrate invasion in the interpretation of the measurements. The first part of the project considered the development of fast and reliable numerical algorithms to simulate borehole sonic waveforms in 2D, 3D, and radial 1D media. Such algorithms were subsequently used in the quantitative estimation of elastic properties jointly from borehole sonic and EM measurements. In the second part of the project we developed a new algorithm to estimate water saturation, porosity, and dry-rock elastic moduli jointly from borehole sonic and EM measurements. This algorithm assumed radial 1D variations of fluid saturation due to mud-filtrate invasion. Subsequently, we adapted the estimation method to interpret borehole field measurements acquired in both a shaly-sand sedimentary sequence and a tight-gas sandstone formation. In the two cases, we simulated the process of mud-filtrate invasion and concomitantly honored sonic and EM measurements. We produced reliable estimates of permeability and dry-rock moduli that were successfully validated with rock-core measurements. Finally, we introduced a new stochastic inversion procedure to estimate elastic, electrical, and petrophysical properties of layered media jointly from waveform sonic and frequency-domain EM measurements. The procedure was based on Bayesian statistical inversion and delivered estimates of uncertainty under various forms of a-priori information about the unknown properties. Tests on realistic synthetic models confirmed the reliability of this procedure to estimate elastic and petrophysical properties jointly from sonic and EM measurements. Several extended abstracts and conference presentations stemmed from this project, including 2 SEG extended abstracts, 1 SPE extended abstract, and 2 SPWLA extended abstracts. Some of these extended abstracts have been submitted for publication in peer-reviewed journals.

Carlos Torres-Verdin; G. Michael Hoversten; Ki Ha Lee; Gregory Newman; Kurt Nihei

2008-12-31T23:59:59.000Z

160

2012 NERSC User Survey  

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

Results 2012 User Survey Text 2012 NERSC User Survey Text The 2012 NERSC User Survey is closed. The following is the text of the survey. Section 1: Overall Satisfaction with...

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


161

Electrical, electromagnetic and structural characteristics of carbon nanotube-polymer nanocomposites  

E-Print Network (OSTI)

Composites for Electromagnetic Interference Shielding. NanoY. Ma, et al. Electromagnetic Interference (EMI) Shieldingof Bonn). Chung DDL. Electromagnetic interference shielding

Park, Sung-Hoon

2009-01-01T23:59:59.000Z

162

Electromagnetic Isotope Separation Lab (EMIS) | ORNL  

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

Electromagnetic Isotope Separation Lab Electromagnetic Isotope Separation Lab May 30, 2013 ORNL established the Stable Isotope Enrichment Laboratory (SIEL) as part of a project funded by the DOE Office of Science, Nuclear Physics Program to develop a modernized electromagnetic isotope separator (EMIS), optimized for separation of a wide range of stable isotopes. The SIEL is located in the Building 6010 Shield Test Station, space formerly allocated to the Oak Ridge Electron Linear Accelerator, on the main campus of ORNL. ORNL staff have designed and built a nominal 10 mA ion current EMIS (sum of all isotopes at the collector) in the SIEL. This EMIS is currently being tested to determine basic performance metrics such as throughput and enrichment factor per pass. This EMIS unit and space will be used to

163

Topology optimization for the design of periodic microstructures composed of electromagnetic materials  

Science Conference Proceedings (OSTI)

Electromagnetic structures that incorporate certain structural periodicities are known to display special behavior when subjected to electromagnetic waves, and can be designed to have specific functions such as inhibiting the intrusion of electromagnetic ... Keywords: Electromagnetic field, Periodic boundary, Topology optimization

Tsuyoshi Nomura; Shinji Nishiwaki; Kazuo Sato; Koichi Hirayama

2009-02-01T23:59:59.000Z

164

Phenomenological Model of Current Sheet Canting in Pulsed Electromagnetic Accelerators  

E-Print Network (OSTI)

Phenomenological Model of Current Sheet Canting in Pulsed Electromagnetic Accelerators T of current sheet canting in pulsed electromagnetic accelerators is the departure of the plasma sheet (that - canting angle [degrees] 5 - plasma frequency [rad/s] 1 Introduction Pulsed electromagnetic accelerators

Choueiri, Edgar

165

Measurements of current sheet canting in a pulsed electromagnetic accelerator  

E-Print Network (OSTI)

Measurements of current sheet canting in a pulsed electromagnetic accelerator T. E. Markusic, E. Y canting in pulsed electromagnetic accelerators is the departure of the plasma sheet (that carries in an experimental pulsed electromagnetic accelerator, using a variety of propellants and pressure levels

Choueiri, Edgar

166

Information Leakage via Electromagnetic Emanation and Effectiveness of Averaging Technique  

Science Conference Proceedings (OSTI)

It is well known that there is relationship between electromagnetic emanation and processing information in IT devices such as personal computers and smart cards. In this paper, we show how to estimate amount of information that is leaked as electromagnetic ... Keywords: Tempest, Channel capacity, electromagnetic emanation, averaging technique

Hidema Tanaka

2008-04-01T23:59:59.000Z

167

Electromagnetic Wellbore Heating Ibrahim Agyemang1  

E-Print Network (OSTI)

. temperature from the heat sources in any EMIT regions. Parts i) and ii) result in a second order ODE is inversely proportional to the velocity. Fluid that moves slowly past an EMIT region will absorb more heatChapter 5 Electromagnetic Wellbore Heating Ibrahim Agyemang1 , Matthew Bolton2 , Lloyd Bridge2

Bohun, C. Sean

168

A Simple Method for Generating Electromagnetic Oscillations  

E-Print Network (OSTI)

We propose a novel approach to the generation of electromagnetic oscillations by means of a low-frequency pumping of two coupled linear oscillators. A theory of such generation mechanism is proposed, and its feasibility is demonstrated by using coupled RLC oscillators. A comparison of the theoretical results and the experimental data is presented.

Vyacheslav Buts; Dmitriy Vavriv; Oleg Nechayev; Dmitriy Tarasov

2013-08-23T23:59:59.000Z

169

Electromagnetic Composites at the Compton Scale  

E-Print Network (OSTI)

A new class of electromagnetic composite particles is proposed. The composites are very small (the Compton scale), potentially long-lived, would have unique interactions with atomic and nuclear systems, and, if they exist, could explain a number of otherwise anomalous and conflicting observations in diverse research areas.

Frederick J. Mayer; John R. Reitz

2011-09-10T23:59:59.000Z

170

Build A Stronger Electromagnet Project Overview  

E-Print Network (OSTI)

this activity? 5. How did various sub-populations of students perform? Consider factors such as gender, race Electromagnet Sunshine State Standards Middle School: · The student recognizes that energy may be changed: · The student recognizes that energy may be changed in form with varying efficiency. (SC.B.1.4) · The student

Weston, Ken

171

Problems in electromagnetic mass-difference calculations  

SciTech Connect

A brief discussion is given on the progress made thus far in calculating the electromagnetic mass differences of elementary particles. Some of the methods discussed include Feynman's method, Cottinghams method, the methods involving Bjorken scaling iunctions, and the formalism of Dashen and Frautschi. (LBS)

Majumdar, D.P.

1972-01-01T23:59:59.000Z

172

Televisions, video privacy, and powerline electromagnetic interference  

Science Conference Proceedings (OSTI)

We conduct an extensive study of information leakage over the powerline infrastructure from eight televisions (TVs) spanning multiple makes, models, and underlying technologies. In addition to being of scientific interest, our findings contribute to ... Keywords: electromagnetic interference, information leakage, powerline security

Miro Enev; Sidhant Gupta; Tadayoshi Kohno; Shwetak N. Patel

2011-10-01T23:59:59.000Z

173

1998 NERSC User Survey Results  

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

8 User Survey Results 1998 User Survey Results Respondent Summary NERSC has completed its first user survey since its move to Lawrence Berkeley National Laboratory. The survey is...

174

Property:ThermalInfo | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:ThermalInfo Jump to: navigation, search Property Name ThermalInfo Property Type Text Subproperties This property has the following 93 subproperties: A Acoustic Logs Active Seismic Methods Active Sensors Aeromagnetic Survey Airborne Electromagnetic Survey Analytical Modeling C Caliper Log Cation Geothermometers Cement Bond Log Conceptual Model Controlled Source Frequency-Domain Magnetics Cross-Dipole Acoustic Log Cuttings Analysis D Data Acquisition-Manipulation Data Collection and Mapping Data Techniques Data and Modeling Techniques Density Log Direct-Current Resistivity Survey Drilling Methods E Earth Tidal Analysis Electric Micro Imager Log Electromagnetic Sounding Methods Elemental Analysis with Fluid Inclusion

175

Robotic Surveying  

SciTech Connect

ZAPATA ENGINEERING challenged our engineers and scientists, which included robotics expertise from Carnegie Mellon University, to design a solution to meet our client's requirements for rapid digital geophysical and radiological data collection of a munitions test range with no down-range personnel. A prime concern of the project was to minimize exposure of personnel to unexploded ordnance and radiation. The field season was limited by extreme heat, cold and snow. Geographical Information System (GIS) tools were used throughout this project to accurately define the limits of mapped areas, build a common mapping platform from various client products, track production progress, allocate resources and relate subsurface geophysical information to geographical features for use in rapidly reacquiring targets for investigation. We were hopeful that our platform could meet the proposed 35 acres per day, towing both a geophysical package and a radiological monitoring trailer. We held our breath and crossed our fingers as the autonomous Speedrower began to crawl across the playa lakebed. We met our proposed production rate, and we averaged just less than 50 acres per 12-hour day using the autonomous platform with a path tracking error of less than +/- 4 inches. Our project team mapped over 1,800 acres in an 8-week (4 days per week) timeframe. The expertise of our partner, Carnegie Mellon University, was recently demonstrated when their two autonomous vehicle entries finished second and third at the 2005 Defense Advanced Research Projects Agency (DARPA) Grand Challenge. 'The Grand Challenge program was established to help foster the development of autonomous vehicle technology that will some day help save the lives of Americans who are protecting our country on the battlefield', said DARPA Grand Challenge Program Manager, Ron Kurjanowicz. Our autonomous remote-controlled vehicle (ARCV) was a modified New Holland 2550 Speedrower retrofitted to allow the machine-actuated functions to be controlled by an onboard computer. The computer-controlled Speedrower was developed at Carnegie Mellon University to automate agricultural harvesting. Harvesting tasks require the vehicle to cover a field using minimally overlapping rows at slow speeds in a similar manner to geophysical data acquisition. The Speedrower had demonstrated its ability to perform as it had already logged hundreds of acres of autonomous harvesting. This project is the first use of autonomous robotic technology on a large-scale for geophysical surveying.

Suzy Cantor-McKinney; Michael Kruzic

2007-03-01T23:59:59.000Z

176

Electromagnetic field radiation model for lightning strokes to tall structures  

SciTech Connect

This paper describes observation and analysis of electromagnetic field radiation from lightning strokes to tall structures. Electromagnetic field waveforms and current waveforms of lightning strokes to the CN Tower have been simultaneously measured since 1991. A new calculation model of electromagnetic field radiation is proposed. The proposed model consists of the lightning current propagation and distribution model and the electromagnetic field radiation model. Electromagnetic fields calculated by the proposed model, based on the observed lightning current at the CN Tower, agree well with the observed fields at 2km north of the tower.

Motoyama, H. [CRIEPI, Tokyo (Japan); Janischewskyj, W.; Hussein, A.M. [Univ. of Toronto, Ontario (Canada); Chisholm, W.A. [Ontario Hydro Technologies, Toronto, Ontario (Canada); Chang, J.S. [McMaster Univ., Hamilton, Ontario (Canada); Rusan, R.

1996-07-01T23:59:59.000Z

177

Analysis Of Factors Affecting Natural Source Slf Electromagnetic  

Open Energy Info (EERE)

Factors Affecting Natural Source Slf Electromagnetic Factors Affecting Natural Source Slf Electromagnetic Exploration At Geothermal Wells Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analysis Of Factors Affecting Natural Source Slf Electromagnetic Exploration At Geothermal Wells Details Activities (0) Areas (0) Regions (0) Abstract: The Super Low Frequency (SLF) electromagnetic exploration was performed by using a nature source SLF electromagnetic detector at two geothermal wells in Peking University. The data of the SLF electromagnetic exploration at well JR-119 and JR-168 were obtained with the observation of continued five days and four times per day at well JR-119 and of one day at well JR-168. Based on these data, the influencing factors of the SI-F electromagnetic exploration were analyzed, which included the relationship

178

Coherent spin control by electromagnetic vacuum fluctuations  

SciTech Connect

In coherent control, electromagnetic vacuum fluctuations usually cause coherence loss through irreversible spontaneous emission. However, since the dissipation via emission is essentially due to correlation of the fluctuations, when emission ends in a superposition of multiple final states, correlation between different pathways may build up if the 'which way' information is not fully resolved (i.e., the emission spectrum is broader than the transition energy range). Such correlation can be exploited for spin-flip control in a {Lambda}-type three-level system, which manifests itself as an all-optical spin echo in nonlinear optics with two orders of optical fields saved as compared with stimulated Raman processes. This finding represents a class of optical nonlinearity induced by electromagnetic vacuum fluctuations.

Wang Jing [Department of Physics, Chinese University of Hong Kong, Shatin, N.T. (Hong Kong); Department of Physics, Tsinghua University, Beijing 100084 (China); Liu Renbao [Department of Physics, Chinese University of Hong Kong, Shatin, N.T. (Hong Kong); Zhu Bangfen [Department of Physics, Tsinghua University, Beijing 100084 (China); Institute of Advanced Study, Tsinghua University, Beijing 100084 (China); Sham, L. J. [Department of Physics, University of California-San Diego, La Jolla, California 92093-0319 (United States); Steel, D. G. [H. M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2011-05-15T23:59:59.000Z

179

Electromagnetic radiation absorbers and modulators comprising polyaniline  

DOE Patents (OSTI)

A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero, and R.sup.1 and R.sup.2 are independently selected from the group containing of H, --OCH.sub.3, --CH.sub.3, --F, --Cl, --Br, --I, NR.sup.3 .sub.2, --NHCOR.sup.3, --OH, --O.sup.-, SR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.8 alkyl, aryl or aralkyl group.

Epstein, Arthur J. (Bexley, OH); Ginder, John M. (Columbus, OH); Roe, Mitchell G. (Columbus, OH); Hajiseyedjavadi, Hamid (Columbus, OH)

1992-01-01T23:59:59.000Z

180

Electromagnetically induced interference at superconducting qubits  

E-Print Network (OSTI)

We study electromagnetically induced interference at superconducting qubits. The interaction between qubits and electromagnetic fields can provide additional coupling channels to qubit states, leading to quantum interference in a microwave driven qubit. In particular, the interwell relaxation or Rabi oscillation, resulting respectively from the multi- or single-mode interaction, can induce effective crossovers. The environment is modeled by a multi-mode thermal bath, generating the interwell relaxation. Relaxation induced interference, independent of the tunnel coupling, provides deeper understanding to the interaction between the qubits and their environment. It also supplies a useful tool to characterize the relaxation strength as well as the characteristic frequency of the bath. In addition, we demonstrate the relaxation can generate population inversion in a strongly driving two-level system. On the other hand, different from Rabi oscillation, Rabi oscillation induced interference involves more complicate...

Du, Lingjie

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Fluidic electrodynamics: Approach to electromagnetic propulsion  

Science Conference Proceedings (OSTI)

We report on a new methodological approach to electrodynamics based on a fluidic viewpoint. We develop a systematic approach establishing analogies between physical magnitudes and isomorphism (structure-preserving mappings) between systems of equations. This methodological approach allows us to give a general expression for the hydromotive force, thus re-obtaining the Navier-Stokes equation departing from the appropriate electromotive force. From this ground we offer a fluidic approach to different kinds of issues with interest in propulsion, e.g., the force exerted by a charged particle on a body carrying current; the magnetic force between two parallel currents; the Magnus's force. It is shown how the intermingle between the fluid vector fields and electromagnetic fields leads to new insights on their dynamics. The new concepts introduced in this work suggest possible applications to electromagnetic (EM) propulsion devices and the mastery of the principles of producing electric fields of required configuration in plasma medium.

Martins, Alexandre A.; Pinheiro, Mario J. [Institute for Plasmas and Nuclear Fusion and Instituto Superior Tecnico Lisboa, Portugal 351.1.21.841.92.43 (Portugal); Department of Physics and Institute for Plasmas and Nuclear Fusion and Instituto Superior Tecnico Lisboa, Portugal 351.1.21.841.93.22 (Portugal)

2009-03-16T23:59:59.000Z

182

Electromagnetic Casimir Forces in Elliptic Cylinder Geometries  

E-Print Network (OSTI)

The scattering theory approach makes it possible to carry out exact calculations of Casimir energies in any geometry for which the scattering T-matrix and a partial wave expansion of the free Green's function are available. We implement this program for the case of a perfectly conducting elliptic cylinder, thereby completing the set of geometries where electromagnetic scattering is separable. Particular emphasis is placed on the case of zero radius, where the elliptic cylinder reduces to a strip.

Noah Graham

2013-03-26T23:59:59.000Z

183

Electromagnetic Interference Emission Measurements Near FACTS Devices  

Science Conference Proceedings (OSTI)

The expanded application of flexible AC transmission system (FACTS) technology to electric transmission and distribution systems frequently provides the best means of ensuring the needed levels of capacity and reliability. This final report provides a detailed look at the electromagnetic emissions from three tested FACTS systems. The report provides equipment immunity requirements from several potentially applicable standards, along with immunity data for nationwide differential global positioning system...

2003-03-11T23:59:59.000Z

184

Electromagnetic Interference Emission Measurements Near FACTS Devices  

Science Conference Proceedings (OSTI)

The expanded application of flexible AC transmission system (FACTS) technology to the electric transmission and distribution systems frequently provides the best means of insuring the needed levels of capacity and reliability. This interim report provides a detailed look at the electromagnetic emissions from the first two FACTS systems tested. Equipment immunity requirements from several potentially applicable standards are provided along with immunity data for nationwide differential global positioning ...

2002-12-13T23:59:59.000Z

185

Electromagnetic Modelling of Superconducting Sensor Designs  

E-Print Network (OSTI)

DEPARTMENT OF MATERIALS SCIENCE AND METALLURGY Electromagnetic Modelling of Superconducting Sensor Designs Guido Gerra Clare Hall, University of Cambridge 1 Preface The present dissertation has been submitted... and for all the moments they have shared with me. 4 Abstract The problem of design optimisation of thin film direct current Superconducting QUantum Interference Device (SQUID) magnetometers made of YBCO (YBa2Cu3O7-x) was considered. The inductances...

Gerra, Guido

186

Power System and Railroad Electromagnetic Compatibility Handbook  

Science Conference Proceedings (OSTI)

This book is a source of technology and data for preventing and mitigating ac electrical interference problems on railroads. All aspects of electromagnetic compatibility (EMC) where railroad systems are the receptors are examined. This includes well-understood areas such as magnetic induction from transmission lines as well as less understood areas such as conducted interference from distribution systems and effects of harmonics. Chapters examine all known effects of ac interference, including personnel ...

2006-11-29T23:59:59.000Z

187

Nonlinear fan instability of electromagnetic waves  

Science Conference Proceedings (OSTI)

This paper studies the linear and nonlinear stages of the fan instability, considering electromagnetic waves of the whistler frequency range interacting resonantly with energetic electron fluxes in magnetized plasmas. The main attention is paid to determine the wave-particle interaction processes that can lead to the excitation of intense electromagnetic waves by nonequilibrium particle distributions involving suprathermal tails, and to explain under what conditions and through what mechanisms they can occur, develop, and saturate. This paper presents and discusses two main processes: (i) the linear fan instability and (ii) the nonlinear process of dynamical resonance merging, which can significantly amplify the energy carried by linearly destabilized waves after they saturate due to particle trapping. This study consists of (i) determining analytically and numerically, for parameters typical of space and laboratory plasmas, the linear growth rates of whistlers excited by suprathermal particle fluxes through the fan instability, as well as the corresponding thresholds and the physical conditions at which the instability can appear, (ii) building a theoretical self-consistent 3D model and a related numerical code for describing the nonlinear evolution of the wave-particle system, and (iii) performing numerical simulations to reveal and characterize the nonlinear amplification process at work, its conditions of development, and its consequences, notably in terms of electromagnetic wave radiation. The simulations show that when the waves have reached sufficient energy levels owing to the linear fan instability, they saturate by trapping particles and due to the complex dynamics of these particles in the electromagnetic fields, the resonant velocities' domains of the waves overlap and merge, meanwhile a strong increase of the wave energy occurs.

Krafft, C. [Laboratoire de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau Cedex (France) and University Paris Sud, 91405 Orsay Cedex (France); Volokitin, A. [Space Research Institute (IKI), 117997, 84/32 Profsoyuznaya Str., Moscow (Russian Federation)

2010-10-15T23:59:59.000Z

188

Velocity damper for electromagnetically levitated materials  

DOE Patents (OSTI)

A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation.

Fox, R.J.

1992-12-31T23:59:59.000Z

189

Velocity damper for electromagnetically levitated materials  

DOE Patents (OSTI)

A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material is disclosed. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation. 1 fig.

Fox, R.J.

1994-06-07T23:59:59.000Z

190

Monitoring of thermal enhanced oil recovery processes with electromagnetic methods  

SciTech Connect

Research in applying electromagnetic methods for imaging thermal enhanced oil recovery has progressed significantly during the past eighteen months. Working together with researchers at Lawrence Berkeley Laboratory (LBL) and supported by a group of industrial sponsors we have focused our effort on field system development and doing field surveys connected with EOR operations. Field surveys were recently completed at the Lost Hills No.3 oil field and at UC Richmond Field station. At Lost Hills, crosshole EM data sets were collected before a new phase of steam injection for EOR and again four months after the onset of steaming. The two data sets were nearly identical suggesting that very little steam had been injected into this borehole. This is in accord with the operators records which indicate injectivity problems with this particular well. At Richmond we conducted a salt water injection monitoring experiment where 50,000 gallons of salt water were injected in a shallow aquifer and crosshole EM data were collected using the injection well and several observation wells. We applied the imaging code to some of the collected data and produced an image showing that the salt water slug has propagated 8--10 m from the injector into the aquifer. This result is partially confirmed by prior calculations and well logging data. Applying the EM methods to the problem of oil field characterization essentially means extending the borehole resistivity log into the region between wells. Since the resistivity of a sedimentary environment is often directly dependent on the fluids in the rock the knowledge of the resistivity distribution within an oil field can be invaluable for finding missed or bypassed oil or for mapping the overall structure. With small modification the same methods used for mapping EOR process can be readily applied to determining the insitu resistivity structure.

Wilt, M.

1992-09-01T23:59:59.000Z

191

Electromagnetic Compatibility in Nuclear Power Plants  

SciTech Connect

Electromagnetic compatibility (EMC) has long been a key element of qualification for mission critical instrumentation and control (I&C) systems used by the U.S. military. The potential for disruption of safety-related I&C systems by electromagnetic interference (EMI), radio-frequency interference (RFI), or power surges is also an issue of concern for the nuclear industry. Experimental investigations of the potential vulnerability of advanced safety systems to EMI/RFI, coupled with studies of reported events at nuclear power plants (NPPs) that are attributed to EMI/RFI, confirm the safety significance of EMC for both analog and digital technology. As a result, Oak Ridge National Laboratory has been engaged in the development of the technical basis for guidance that addresses EMC for safety-related I&C systems in NPPs. This research has involved the identification of engineering practices to minimize the potential impact of EMI/RFI and power surges and an evaluation of the ambient electromagnetic environment at NPPs to tailor those practices for use by the nuclear industry. Recommendations for EMC guidance have been derived from these research findings and are summarized in this paper.

Ewing, P.D.; Kercel, S.W.; Korsah, K.; Wood, R.T.

1999-08-29T23:59:59.000Z

192

User_LaunchSurvey  

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

and Completing Assigned Survey and Completing Assigned Survey © 2011 SuccessFactors, Inc. - 1 - SuccessFactors Learning Confidential. All rights reserved. Job Aid: Launching and Completing Assigned Survey Purpose The purpose of this job aid is to guide users through the step-by-step process of launching and completing assigned surveys. Task A. Launch and Complete Assigned Survey From the Home page, filter the To-Do List to show only Surveys. Hover over the course evaluation title. Click Open. 1 2 3 3 2 1 Launch and Complete Assigned Survey 6 Steps Task A SuccessFactors Learning v 6.4 User Job Aid Launching and Completing Assigned Survey © 2011 SuccessFactors, Inc. - 2 - SuccessFactors Learning Complete the survey by selecting the radio button for the appropriate rating

193

ORISE: Characterization surveys  

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

Characterization surveys Characterization surveys An ORISE technicians performs a characterization survey The Oak Ridge Institute for Science and Education (ORISE) performs independent, objective characterization surveys to define the extent of radiological contamination at sites scheduled for decontamination and decommissioning (D&D). A fundamental aspect of all D&D projects, characterization surveys provide guidance to determine the best remediation procedures and are a cost-effective method of ensuring a site meets preliminary regulatory standards. ORISE designs characterization surveys using the data quality objectives process. This approach focuses on the particular objective of characterization, and ensures that only the data needed to address the characterization decisions are collected. Data collection efforts are

194

Electromagnetic gearing applications in hybrid-electric vehicles  

E-Print Network (OSTI)

In this thesis, the operation of electric machines as three port devices is studied in detail. Electric machines used in this manner are referred to as electromagnetic gears in this research. All possible steady-state operating modes of these three-port devices have been explained in this thesis. Mathematical models for operating a switched reluctance machine and a separately excited dc machine as electromagnetic gears have been derived. These models have been used for simulating the performance of electromagnetic gears under various operating conditions. Electromagnetic gears can be used in hybrid electric propulsion systems as power sharing devices. This thesis explains the detailed operation of a new hybrid propulsion system utilizing electromagnetic gears. This propulsion system was proposed by Dr. M. Ehsani and has been named the "Transmotor Hybrid". The limitation of this propulsion system has also been explained in this thesis. The application of electromagnetic gears in hybrid propulsion systems has been described in detail in this research.

Sodhi, Sameer

1994-01-01T23:59:59.000Z

195

The Study of Electromagnetic Field Response Using Very Low Frequency Methods in Geothermal Area, Sabang  

SciTech Connect

Electromagnetic field measurements have been performed using the method of Very Low Frequency tilt angle pattern in Jaboi, Sabang. A site survey was conducted and carried out to identify the anomalies of location, depth and geometry of hydrothermal based on tilt angle measurement and ellipse. Objective of this study is to see the response of the magnetic and electric field in relation to location, depth and hydrothermal geometry. The devices of T-VLF-R IRIS was used in this study, while the (NWC) station was selected as main station and (JJF4) station was selected as comparison station. The electromagnetic field survey was recorded for a line spanned as long as 900 meters at the interval of 10 meter depth. The results of this study show the greatest anomaly occurred at line interval between 400-600 meters with a depth of 10-140 meters. Anomaly pattern of each depth shows that the propagation pattern of hydrothermal is in the form of vertical pipe flow.

Isa, M. [Departement of Physics Syiah Kuala University Banda Aceh, 23111 (Indonesia); School of Physics, Universiti Sains Malaysia 11800, Penang (Malaysia); Lim, H. S.; Jafri, M. Z. Mat [School of Physics, Universiti Sains Malaysia 11800, Penang (Malaysia)

2011-03-30T23:59:59.000Z

196

Generation of electro-magnetic oscillation in surface multijunction MOMOM  

Science Conference Proceedings (OSTI)

An intergrated surface multijunction MOMOM (metal-oxide-metal-oxide-metal) is reported and coherent electromagnetic oscillation is observed in the low frequency range.

Liao Shiqiang; Wang Yuzhu

1986-04-01T23:59:59.000Z

197

Analysis Of Factors Affecting Natural Source Slf Electromagnetic...  

Open Energy Info (EERE)

sensor orientation and the received artificial electromagnetic interference, influence of weather conditions on the data quality and so on. The results showed that (1) There is an...

198

Novel resonance-assisted electromagnetic-transport phenomena  

E-Print Network (OSTI)

We first demonstrate theoretically and experimentally that electromagnetic resonators with high quality factors (Q) can be used to transfer power efficiently over distances substantially larger than the characteristic ...

Kurs, Andr B

2011-01-01T23:59:59.000Z

199

Overview Of Electromagnetic Methods Applied In Active Volcanic...  

Open Energy Info (EERE)

in Colorado. For one example - Mt. Konocti in the Mayacamas Mountains, California - gravity, magnetic, and seismic, as well as electromagnetic methods have all been used in an...

200

Time-Domain Electromagnetics At Long Valley Caldera Area (Sorey...  

Open Energy Info (EERE)

released results from 158 time-domain electromagnetic (TDEM) soundings and, with Chevron Resources, a total of 77 magnetotelluric (MT) stations. Reinterpretations of the...

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


201

Numerical Simulation of Electro-magnetic Turbulent Inhibitor ...  

Science Conference Proceedings (OSTI)

Numerical Modeling of Centrifugally Cast HSS Rolls Numerical Simulation of Electro-magnetic Turbulent Inhibitor Technology in a Tundish Optimizing the...

202

Effect of Electromagnetic Fields on the Filtration of Aluminium ...  

Science Conference Proceedings (OSTI)

Numerical Modeling of Centrifugally Cast HSS Rolls Numerical Simulation of Electro-magnetic Turbulent Inhibitor Technology in a Tundish Optimizing the...

203

Electromagnetic radiation from lightning return strokes to tall structures.  

E-Print Network (OSTI)

??The study of the interaction of lightning electromagnetic fields with electrical systems and the design of appropriate protection strategies are generally based on statistical distributions (more)

Pavanello, Davide

2007-01-01T23:59:59.000Z

204

Current Sheet Permeability in Electromagnetic Pulsed Plasma Thrusters  

E-Print Network (OSTI)

in Pulsed Electromagnetic Accelerators. PhD thesis, Princeton University, 2002. [6] R.G. Jahn and K.E. Clark

Choueiri, Edgar

205

Magnetohydrodynamic power generation, electromagnetic pumps, heat pipes, and thermionic convertors  

DOE Green Energy (OSTI)

The basic principles of operation, components, and design of MHD generators, electromagnetic pumps, heat pipes and thermionic converters are described. 66 references. (WHK)

Pierson, E.S.; Bonyhady, K.A.; Dunn, P.F.; Nathenson, R.D.; Uherka, K.L.

1984-01-01T23:59:59.000Z

206

A Numerical Evaluation Of Electromagnetic Methods In Geothermal...  

Open Energy Info (EERE)

GEOTHERMAL ENERGYGeothermal Home Journal Article: A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration Details Activities (0) Areas (0) Regions (0) Abstract:...

207

6.013 Electromagnetics and Applications, Fall 2002  

E-Print Network (OSTI)

Electromagnetic phenomena are explored in modern applications including wireless communications, circuits, computer interconnects and peripherals, optical fiber links and components, microwave communications and radar, ...

Staelin, David H.

208

INFRASTRUCTURE SURVEY 2011  

E-Print Network (OSTI)

10 Appendices Appendix 1. Glossary of Terminology and Definitions 11 Appendix 2. Survey Definitions. There is a Glossary of Terminology and Definitions (Appendix 1). The survey form is Appendix 3 of this Report

209

Why Study Electromagnetics: The First Unit in an Undergraduate Electromagnetics Course  

E-Print Network (OSTI)

integrate optical-fiber interconnects and optical microchips into systems of unimaginable information. Or could it? In fact, a simple Fourier analysis argument shows that recent optical systems that generate electromagnetic waves. For a foe determined to press an attack despite the operation of a radar system

Taflove, Allen

210

From Electromagnetic Duality to Extended Electrodynamics  

E-Print Network (OSTI)

This paper presents the transition from Classical Electrodynamics (CED) to Extended Electrodynamics (EED) from the electromagnetic duality point of view, and emphasizes the role of the canonical complex structure in ${\\cal R}^2$ in, both, nonrelativistic and relativistic formulations of CED and EED. We begin with summarizing the motivations for passing to EED, as well as we motivate and outline the way to be followed in pursuing the right extension of Maxwell equations. Further we give the nonrelativistic and relativistic approaches to the extension and give explicitly the new equations as well as some properties of the nonlinear vacuum solutions.

Donev, S

2001-01-01T23:59:59.000Z

211

From Electromagnetic Duality to Extended Electrodynamics  

E-Print Network (OSTI)

This paper presents the transition from Classical Electrodynamics (CED) to Extended Electrodynamics (EED) from the electromagnetic duality point of view, and emphasizes the role of the canonical complex structure in ${\\cal R}^2$ in, both, nonrelativistic and relativistic formulations of CED and EED. We begin with summarizing the motivations for passing to EED, as well as we motivate and outline the way to be followed in pursuing the right extension of Maxwell equations. Further we give the nonrelativistic and relativistic approaches to the extension and give explicitly the new equations as well as some properties of the nonlinear vacuum solutions.

Stoil Donev

2001-01-20T23:59:59.000Z

212

Physics with the ALICE Electromagnetic Calorimeter  

E-Print Network (OSTI)

I will present physics measurements which are achievable in the ALICE experiment at the LHC through the inclusion of a new electromagnetic calorimeter. I will focus on jet measurements in proton proton and heavy ion collisions. Detailed simulations have been performed on jet reconstruction, jet triggering, heavy flavor jet reconstruction through electron identification, gamma-jet reconstruction and the measurements of identified hadrons and resonances in jets. I will show the physics capabilities which are made possible through the combination of calorimeter information with the other detector components in ALICE.

Rene Bellwied; for the ALICE Collaboration

2009-07-17T23:59:59.000Z

213

Electromagnetic wave scattering by many small particles  

E-Print Network (OSTI)

Scattering of electromagnetic waves by many small particles of arbitrary shapes is reduced rigorously to solving linear algebraic system of equations bypassing the usual usage of integral equations. The matrix elements of this linear algebraic system have physical meaning. They are expressed in terms of the electric and magnetic polarizability tensors. Analytical formulas are given for calculation of these tensors with any desired accuracy for homogeneous bodies of arbitrary shapes. An idea to create a "smart" material by embedding many small particles in a given region is formulated.

A. G. Ramm

2006-08-11T23:59:59.000Z

214

Direct-Current Resistivity Survey At Haleakala Volcano Area (Thomas, 1986)  

Open Energy Info (EERE)

Direct-Current Resistivity Survey At Haleakala Direct-Current Resistivity Survey At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one self-potential profile and one controlled-source electromagnetic sounding. The geochemical data collected included a reconnaissance soil mercury and

215

Environmental Survey preliminary report  

SciTech Connect

This report presents the preliminary findings from the first phase of the Environmental Survey of the United States Department of Energy (DOE) Sandia National Laboratories conducted August 17 through September 4, 1987. The objective of the Survey is to identify environmental problems and areas of environmental risk associated with Sandia National Laboratories-Albuquerque (SNLA). The Survey covers all environmental media and all areas of environmental regulation. It is being performed in accordance with the DOE Environmental Survey Manual. This phase of the Survey involves the review of existing site environmental data, observations of the operations carried on at SNLA, and interviews with site personnel. 85 refs., 49 figs., 48 tabs.

Not Available

1988-04-01T23:59:59.000Z

216

Photographic, magnetic, and interferometric measurements of current sheet canting in a pulsed electromagnetic accelerator  

E-Print Network (OSTI)

in a pulsed electromagnetic accelerator were measured using three different techniques: high- speed at higher pressures. 1 Introduction Pulsed electromagnetic accelerators are devices which use intense bursts Apparatus An experimental pulsed electromagnetic accelerator has been constructed. The accelerator

Choueiri, Edgar

217

Steven Weinberg, Weak Interactions, and Electromagnetic Interactions  

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

Steven Weinberg and Steven Weinberg and Weak and Electromagnetic Interactions Resources with Additional Information Steven Weinberg Courtesy Dr. Steven Weinberg Steven "Weinberg is a professor of physics and astronomy at UT [The University of Texas] Austin and is founding director of the Theory Group in the College of Natural Sciences. [He is] well known for his development of a field theory that unifies the electromagnetic and weak nuclear forces, and for other major contributions to physics and cosmology ... Weinberg's work has been honored with numerous prizes, including the Nobel Prize in Physics in 1979 and the National Medal of Science in 1991. Weinberg is the author of the prize-winning book The First Three Minutes: A Modern View of the Origin of the Universe (which has been translated into 22 foreign languages) as well as Gravitation and Cosmology, The Discovery of Subatomic Particles, Dreams of a Final Theory and The Quantum Theory of Fields. ... Weinberg was the recipient of the Scientist as Poet prize from Rockefeller University for "extraordinary achievements in conveying - with passionate clarity - the ideas, history, explanatory power and aesthetic dimensions of fundamental physics." The citation mentioned two of Weinberg's books.

218

Electromagnetically induced interference at superconducting qubits  

E-Print Network (OSTI)

We study electromagnetically induced interference at superconducting qubits. The interaction between qubits and electromagnetic fields can provide additional coupling channels to qubit states, leading to quantum interference in a microwave driven qubit. In particular, the interwell relaxation or Rabi oscillation, resulting respectively from the multi- or single-mode interaction, can induce effective crossovers. The environment is modeled by a multi-mode thermal bath, generating the interwell relaxation. Relaxation induced interference, independent of the tunnel coupling, provides deeper understanding to the interaction between the qubits and their environment. It also supplies a useful tool to characterize the relaxation strength as well as the characteristic frequency of the bath. In addition, we demonstrate the relaxation can generate population inversion in a strongly driving two-level system. On the other hand, different from Rabi oscillation, Rabi oscillation induced interference involves more complicated and modulated photon exchange thus offers an alternative means to manipulate the qubit, with more controllable parameters including the strength and position of the tunnel coupling. It also provides a testing ground for exploring nonlinear quantum phenomena and quantum state manipulation, in not only the flux qubit but also the systems with no crossover structure, e.g. phase qubits.

Lingjie Du; Yang Yu

2010-12-14T23:59:59.000Z

219

Electromagnetic fields: Biological and clinical aspects  

SciTech Connect

Our entire biosphere is immersed in a sea of man-made electromagnetic fields (EMF). Occupational and public health data suggest that these fields may be a health hazard, possibly involving cancer and fetal loss. This paper reviews the history and pertinent physics of electromagnetic fields and presents evidence from the authors' work, and that of others, of biological interaction with living systems. Epidemiological data suggesting EMF hazards are reviewed including a discussion of possible risks associated with Hawaii's Lualualei transmitter site, TV and FM antennas in high-density population areas, fields surrounding electric power transmission and computer terminals, and the plan to route a major highway through the near-field of an operating Omega signal-source. In the face of current public fear and controversial research reports about long-term EMF exposure, suggestions are presented for public policy about these local sources of concern, as well as for the EMF risks common to any similarly developed areas. 30 refs.

Tabrah, F.L.; Batkin, S. (Department of Physiology, University of Hawaii School of Medicine, Honolulu (USA))

1991-03-01T23:59:59.000Z

220

Infrared Surveys for AGN  

E-Print Network (OSTI)

From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for AGN surveys in the infrared and results from previous IR surveys. The Luminous Infrared Galaxies, which in some cases house dust-enshrouded AGN, submillimeter surveys, and recent studies of the cosmic x-ray and infrared backgrounds suggest that there is a population of highly-obscured AGN at high redshift. ISO Surveys have begun to resolve the infrared background and may have detected this obscured AGN population. New infrared surveys, particularly the SIRTF Wide-area Infrared Extragalactic Legacy Survey (SWIRE), will detect this population and provide a platform for understanding the evolution of AGN, Starbursts and passively evolving galaxies in the context of large-scale structure and environment.

Smith, H E

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Infrared Surveys for AGN  

E-Print Network (OSTI)

From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for AGN surveys in the infrared and results from previous IR surveys. The Luminous Infrared Galaxies, which in some cases house dust-enshrouded AGN, submillimeter surveys, and recent studies of the cosmic x-ray and infrared backgrounds suggest that there is a population of highly-obscured AGN at high redshift. ISO Surveys have begun to resolve the infrared background and may have detected this obscured AGN population. New infrared surveys, particularly the SIRTF Wide-area Infrared Extragalactic Legacy Survey (SWIRE), will detect this population and provide a platform for understanding the evolution of AGN, Starbursts and passively evolving galaxies in the context of large-scale structure and environment.

Harding E. Smith

2002-03-06T23:59:59.000Z

222

Property:FieldProcedures | Open Energy Information  

Open Energy Info (EERE)

FieldProcedures FieldProcedures Jump to: navigation, search Property Name FieldProcedures Property Type Text Description Description of actions, equipment and footprint of the exploration activity Subproperties This property has the following 39 subproperties: A Active Seismic Techniques Airborne Gravity Survey Audio-Magnetotellurics C Controlled Source Audio MT Cross-Dipole Acoustic Log D DC Resistivity Survey (Dipole-Dipole Array) DC Resistivity Survey (Mise-Á-La-Masse) DC Resistivity Survey (Pole-Dipole Array) DC Resistivity Survey (Schlumberger Array) DC Resistivity Survey (Wenner Array) Development Drilling Direct-Current Resistivity Survey Drilling Techniques E Earth Tidal Analysis Electrical Profiling Configurations Electromagnetic Techniques Exploration Drilling F FMI Log Frequency-Domain Electromagnetic Survey

223

Electromagnetic Wellbore Heating C. Sean Bohun, The Pennsylvania State University,  

E-Print Network (OSTI)

the heat sources in any EMIT regions and how this couples to part i) and ii). Parts i) and ii) resultElectromagnetic Wellbore Heating C. Sean Bohun, The Pennsylvania State University, Bruce McGee, Mc of petroleum fluids from an oil reservoir by the method of electromagnetic heating. By its very nature

Bohun, C. Sean

224

An electromagnetism metaheuristic for solving the Maximum Betweenness Problem  

Science Conference Proceedings (OSTI)

In this paper we present an electromagnetism (EM) metaheuristic for solving NP hard Maximum Betweenness Problem (MBP). A new encoding scheme with appropriate objective functions is implemented. Specific representation of the individuals enables the EM ... Keywords: Betweenness problem, Combinatorial optimization, Electromagnetism-like mechanism

Vladimir Filipovi?; Aleksandar Kartelj; Dragan Mati?

2013-02-01T23:59:59.000Z

225

Electromagnetic Buckled Beam Oscillator for Enhanced Vibration Energy Harvesting  

Science Conference Proceedings (OSTI)

In this work, a nonlinear vibration energy harvester consisting of a buckled beam and an electromagnetic transducer is proposed. An advantage of this device is that there is no need of permanent magnets to create the bistable potential. Theoretical modeling ... Keywords: Vibration energy harvester (VEH), non linear system, bistability, Duffing oscillator, electromagnetic generators (EMG)

F. Cottone, P. Basset, H. Vocca, L. Gammaitoni

2012-11-01T23:59:59.000Z

226

Electromagnetic torque analysis of a DFIG for wind turbines  

Science Conference Proceedings (OSTI)

Electromagnetic torque of doubly fed induction generator (DFIG) is a consequence of the rotor and stator supply. The stator voltage has a fixed amount and frequency. The rotor voltage of the DFIG as a part of a wind turbine has a variable amount and ... Keywords: DFIG, electromagnetic torque, renewable energy, wind turbine

Jurica Smajo; Dinko Vukadinovic

2008-05-01T23:59:59.000Z

227

Schlieren Techniques for the Visualization of Current Sheets in Pulsed Electromagnetic Accelerators  

E-Print Network (OSTI)

Schlieren Techniques for the Visualization of Current Sheets in Pulsed Electromagnetic Accelerators in the initi- ation, propagation, and ejection of current sheets in pulsed electromagnetic accelerators

Choueiri, Edgar

228

A quaternionic unification of electromagnetism and hydrodynamics  

E-Print Network (OSTI)

We have derived energy conservation equations from the quaternionic Newton's law that is compatible with Lorentz transformation. This Newton's law yields directly the Euler equation and other relations governing the fluid motion. With this formalism, the pressure contributes positively to the dynamics of the system in the same way mass does. Hydrodynamic equations are derived from Maxwell's equations by adopting an electromagnetohydrodynamics analogy. In this analogy the hydroelectric field is related to the local acceleration of the fluid and the Lorentz gauge is related to the incompressible fluid condition. An analogous Lorentz gauge in hydrodynamics is proposed. We have shown that the vorticity of the fluid is developed whenever the particle local acceleration of the fluid deviates from the velocity direction. We have shown that Lorentz force in electromagnetism corresponds to Euler force for fluids. Moreover, we have obtained a Faraday-like law and Ampere's -like law in Hydrodynamics.

Arbab, Arbab I

2010-01-01T23:59:59.000Z

229

Concerning Measurement of Gravitomagnetism in Electromagnetic Systems  

E-Print Network (OSTI)

Measurement of gravitomagnetic field is of fundamental importance as a test of general relativity. Here we present a new theoretical project for performing such a measurement based on detection of the electric field arising from the interplay between the gravitomagnetic and magnetic fields in the stationary axial-symmetric gravitational field of a slowly rotating massive body. Finally it is shown that precise magnetometers based on superconducting quantum interferometers could not be designed for measurement of the gravitomagnetically induced magnetic field in the cavity of a charged capacitor since they measure the circulation of a vector potential of electromagnetic field, i.e., an invariant quantity including the sum of electric and magnetic fields, and the general-relativistic magnetic part will be totally cancelled by the electric one which is in good agreement with the experimental results.

B. J. Ahmedov; N. I. Rakhmatov

2006-08-07T23:59:59.000Z

230

A quaternionic unification of electromagnetism and hydrodynamics  

E-Print Network (OSTI)

We have derived energy conservation equations from the quaternionic Newton's law that is compatible with Lorentz transformation. This Newton's law yields directly the Euler equation and other equations governing the fluid motion. With this formalism, the pressure contributes positively to the dynamics of the system in the same way mass does. Hydrodynamic equations are derived from Maxwell's equations by adopting an electromagnetohydrodynamics (EMH) analogy. In this analogy the hydroelectric field is related to the local acceleration of the fluid and the Lorentz gauge is related to the incompressible fluid condition. An analogous Lorentz gauge in hydrodynamics is proposed. We have shown that the vorticity of the fluid is developed whenever the particle local acceleration of the fluid deviates from the velocity direction. We have also shown that Lorentz force in electromagnetism corresponds to Euler force in fluids. Moreover, we have obtained Gauss's, Faraday's and Ampere's -like laws in Hydrodynamics.

Arbab I. Arbab

2010-02-27T23:59:59.000Z

231

Berkeley Lab Postdoc Survey  

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

Founded in 1983, MOR Associates has led dozens of major survey efforts on behalf of higher education, such as UC Berkeley, MIT, Stanford University, University of Washington,...

232

ORISE: Characterization surveys  

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

extent of radiological contamination at sites scheduled for decontamination and decommissioning (D&D). A fundamental aspect of all D&D projects, characterization surveys provide...

233

The Dark Energy Survey  

Science Conference Proceedings (OSTI)

A new proposed optical?near infrared survey of 5000 square degrees of the South Galactic Cap is presented. To perform it

E. Snchez; Dark Energy Survey Collaboration

2006-01-01T23:59:59.000Z

234

Detection of electromagnetic waves using charged MEMS structures  

SciTech Connect

We describe micromechanical structures that are capable of sensing both electrostatic fields and electromagnetic fields over a wide frequency range. Typically, sensing of electromagnetic waves is achieved with electrically conducting antennas, which despite the many advantages do not exhibit high sensitivity over a broad frequency range. An important aspect of our present work is that, in contrast to traditional antennas, the dimensions of micromechanical oscillators sensitive to electromagnetic waves can be much smaller than the wavelength. We characterized the micromechanical oscillators and measured responses to electric fields and estimated the performance limits by evaluating the signal-to-noise ratio theoretically and experimentally.

Datskos, Panos G [ORNL; Lavrik, Nickolay V [ORNL; Tobin, Jacob D [ORNL; Bowland, Landon T [ORNL

2012-01-01T23:59:59.000Z

235

Nonlinear Landau damping of transverse electromagnetic waves in dusty plasmas  

SciTech Connect

High-frequency transverse electromagnetic waves in a collisionless isotropic dusty plasma damp via nonlinear Landau damping. Taking into account the latter we have obtained a generalized set of Zakharov equations with local and nonlocal terms. Then from this coupled set of Zakharov equations a kinetic nonlinear Schroedinger equation with local and nonlocal nonlinearities is derived for special cases. It is shown that the modulation of the amplitude of the electromagnetic waves leads to the modulation instability through the nonlinear Landau damping term. The maximum growth rate is obtained for the special case when the group velocity of electromagnetic waves is close to the dust acoustic velocity.

Tsintsadze, N. L. [E. Andronikashvili Institute of Physics, Tbilisi 0171 (Georgia); Department of Physics, Government College University, Lahore 54000 (Pakistan); Salam Chair in Physics, Government College University, Lahore 54000 (Pakistan); Chaudhary, Rozina [Department of Physics, Government College University, Lahore 54000 (Pakistan); Salam Chair in Physics, Government College University, Lahore 54000 (Pakistan); Shah, H. A. [Department of Physics, Government College University, Lahore 54000 (Pakistan); Murtaza, G. [Salam Chair in Physics, Government College University, Lahore 54000 (Pakistan)

2009-04-15T23:59:59.000Z

236

The electromagnetic calorimeter for the STAR experiment at RHIC  

SciTech Connect

The STAR detector at RHIC can be used both for searches for quark-gluon plasma and for high energy pp spin physics. An electromagnetic calorimeter is being planned which will be used for triggering on High pt direct gammas, e{sup {plus_minus}}, and the electromagnetic component of jets. Jets will be measured for both kinds of physics by using the electro-magnetic calorimeter and central TPC tracking. We describe some features of the fiber-tile calorimeter as it is presently being designed.

Underwood, D.G.

1992-11-01T23:59:59.000Z

237

REMOTE SENSING GEOLOGICAL SURVEY  

E-Print Network (OSTI)

REMOTE SENSING IN GEOLOGICAL SURVEY OF BRAZIL August/2010 Mônica Mazzini Perrotta Remote Sensing Division Head #12;SUMMARY The Geological Survey of Brazil mission The Remote Sensing Division Main remote, Paleontology, Remote Sensing Director of Hydrology and Land Management But Remote Sensing Division gives

238

Utility Baghouse Survey 2009  

Science Conference Proceedings (OSTI)

EPRI conducted comprehensive surveys of utility baghouse installations in 1981, 1991, and 2005 to summarize the state of the technology. The current survey focuses on nine selected pulse-jet baghouses to provide a better understanding of the design, performance, and operation of recent installations.

2009-12-14T23:59:59.000Z

239

NASA Customer Satisfaction Survey  

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

Customer Satisfaction Survey Customer Satisfaction Survey NASA's Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC) would like to encourage you to participate in the NASA ESDIS 2013 American Customer Satisfaction Survey. The ORNL DAAC is one of twelve data centers sponsored by NASA's Earth Science Data and Information System (ESDIS) project. The ESDIS project uses the results of this survey to evaluate our success and to determine where improvements are needed. Invitations will be sent to you, our users, from CFI Group [CFI Group on behalf of NASA (NASA@jangomail.com)] during the week of August 20, 2013. Each invitation will reference us as "ORNL DAAC / FLUXNET", and contain a unique secure link to this Web-based anonymous survey. We encourage you to participate!

240

Building Technologies Residential Survey  

SciTech Connect

Introduction A telephone survey of 1,025 residential occupants was administered in late October for the Building Technologies Program (BT) to gather information on residential occupant attitudes, behaviors, knowledge, and perceptions. The next section, Survey Results, provides an overview of the responses, with major implications and caveats. Additional information is provided in three appendices as follows: - Appendix A -- Summary Response: Provides summary tabular data for the 13 questions that, with subparts, comprise a total of 25 questions. - Appendix B -- Benchmark Data: Provides a benchmark by six categories to the 2001 Residential Energy Consumption Survey administered by EIA. These were ownership, heating fuel, geographic location, race, household size and income. - Appendix C -- Background on Survey Method: Provides the reader with an understanding of the survey process and interpretation of the results.

Secrest, Thomas J.

2005-11-07T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

3DEMIII Workshop, February 2003, Adelaide. Efficient 3-D Electromagnetic Modeling in the Presence of  

E-Print Network (OSTI)

;Electromagnetic Laboratory, Department of Eletrical and Computer Engineering, University of Illinois, Urbana, IL

Torres-Verdín, Carlos

242

Electromagnetic Interference Between Different Model Wireless Communications Devices and Electronic Medical Equipment  

Science Conference Proceedings (OSTI)

This case study describes instances of incompatibility between sensitive electronic medical equipment and its electromagnetic environment.

2003-12-31T23:59:59.000Z

243

Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy-Current) Method  

E-Print Network (OSTI)

Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy-Current) Method

American Society for Testing and Materials. Philadelphia

2009-01-01T23:59:59.000Z

244

Standard Practice for Electromagnetic (Eddy-Current) Examination of Copper Redraw Rod for Electrical Purposes  

E-Print Network (OSTI)

Standard Practice for Electromagnetic (Eddy-Current) Examination of Copper Redraw Rod for Electrical Purposes

American Society for Testing and Materials. Philadelphia

2009-01-01T23:59:59.000Z

245

Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) |  

Open Energy Info (EERE)

Time-Domain Electromagnetics At Haleakala Volcano Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Time-Domain Electromagnetics Activity Date Usefulness useful DOE-funding Unknown Notes Controlled-source electromagnetic soundings were found to be substantially more successful in the southwest rift than either the Schlumberger or the self-potential studies. This was largely due to the ability of time-domain methods to penetrate high-resistivity surface layers and thus to define lower-resistivity sections at depth. The results of this sounding study, which was conducted at elevations ranging from 75 to 497 m a.s.l., generally indicated moderate- to lowresistivity (6 - 7 ohm.m) sections to depths of 1 km on the lower rift zone and higher resistivities (12-16

246

Dispersion relation of electromagnetic ion cyclotron waves using Cluster observations  

E-Print Network (OSTI)

Multi-point wave observations on Cluster spacecraft are used to infer the dispersion relation of electromagnetic ion cyclotron (EMIC) waves. In this study we use a phase differencing method and observations from STAFF and ...

Pakhotin, I. P.

247

Design and parametric simulation of radially oriented electromagnetic actuators  

E-Print Network (OSTI)

This thesis presents the design and simulation of an electromagnetic actuator system capable of delivering large pulses of radial force onto a cylindrical surface. Due to its robust design, simple control scheme, and large ...

Bosworth, William R., S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

248

Low-cost electromagnetic tagging : design and implementation  

E-Print Network (OSTI)

Several implementations of chipless RFID (Radio Frequency Identification) tags are presented and discussed as low-cost alternatives to chip-based RFID tags and sensors. An overview of present-day near-field electromagnetic ...

Fletcher, Richard R. (Richard Ribon)

2002-01-01T23:59:59.000Z

249

Compromising electromagnetic emanations of wired and wireless keyboards  

Science Conference Proceedings (OSTI)

Computer keyboards are often used to transmit confidential data such as passwords. Since they contain electronic components, keyboards eventually emit electromagnetic waves. These emanations could reveal sensitive information such as keystrokes. The ...

Martin Vuagnoux; Sylvain Pasini

2009-08-01T23:59:59.000Z

250

A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration  

Open Energy Info (EERE)

Evaluation Of Electromagnetic Methods In Geothermal Exploration Evaluation Of Electromagnetic Methods In Geothermal Exploration - L Pellerin, J M Johnston & G W Hohmann, Geophysics, 61(1), 1996, Pp 121-130 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration - L Pellerin, J M Johnston & G W Hohmann, Geophysics, 61(1), 1996, Pp 121-130 Details Activities (0) Areas (0) Regions (0) Abstract: Unavailable Author(s): Unknown Published: International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1996 Document Number: Unavailable DOI: 10.1016/S0148-9062(97)87449-9 Source: View Original Journal Article Retrieved from "http://en.openei.org/w/index.php?title=A_Numerical_Evaluation_Of_Electromagnetic_Methods_In_Geothermal_Exploration_-_L_Pellerin,_J_M_Johnston_%26_G_W_Hohmann,_Geophysics,_61(1),_1996,_Pp_121-130&oldid=3883

251

Electromagnetic Transients in Substations, Volumes 5: Test Data Tapes  

Science Conference Proceedings (OSTI)

EPRI has investigated high-frequency electromagnetic interference (EMI) resulting from high-voltage switching, lightning, and faults in substations. This report provides information about EMI levels to which equipment is exposed.

1993-08-19T23:59:59.000Z

252

Review: Digital image steganography: Survey and analysis of current methods  

Science Conference Proceedings (OSTI)

Steganography is the science that involves communicating secret data in an appropriate multimedia carrier, e.g., image, audio, and video files. It comes under the assumption that if the feature is visible, the point of attack is evident, thus the goal ... Keywords: Adaptive steganography, Digital image steganography, Frequency domain, Security, Spatial domain

Abbas Cheddad; Joan Condell; Kevin Curran; Paul Mc Kevitt

2010-03-01T23:59:59.000Z

253

Boundary effects of electromagnetic vacuum fluctuations on charged particles  

E-Print Network (OSTI)

The effects of electromagnetic vacuum fluctuations with the boundary on charged particles is investigated. They may be observed via an electron interference experiment near the conducting plate, where boundary effects of vacuum fluctuations are found significant on coherence reduction of the electrons. The dynamics of the charge under the influence of quantized electromagnetic fields with a conducting plate is also studied. The corresponding stochastic equation of motion is derived in the semiclassical approximation, and the behavior of the charge's velocity fluctuations is discussed.

Tai-Hung Wu; Jen-Tsung Hsiang; Da-Shin Lee

2007-11-19T23:59:59.000Z

254

Guidelines for Electromagnetic Interference Testing in Power Plants: Revision 1  

Science Conference Proceedings (OSTI)

Concern about the effect of electromagnetic emissions on the safe, reliable operation of digital equipment has resulted in requirements for utilities to create detailed emissions maps. This guide identifies emissions sources in nuclear power plants, recommends susceptibility and emissions standards, and details design and layout practices for minimizing susceptibility to electromagnetic interference (EMI). Revision 1 reflects modifications to the original document, which received NRC approval in a Safety...

1997-04-16T23:59:59.000Z

255

Boundary effects of electromagnetic vacuum fluctuations on charged particles  

E-Print Network (OSTI)

The effects of electromagnetic vacuum fluctuations with the boundary on charged particles is investigated. They may be observed via an electron interference experiment near the conducting plate, where boundary effects of vacuum fluctuations are found significant on coherence reduction of the electrons. The dynamics of the charge under the influence of quantized electromagnetic fields with a conducting plate is also studied. The corresponding stochastic equation of motion is derived in the semiclassical approximation, and the behavior of the charge's velocity fluctuations is discussed.

Wu, Tai-Hung; Lee, Da-Shin

2007-01-01T23:59:59.000Z

256

The Covariant Electromagnetic Casimir Effect for Real Conducting Cylindrical Shells  

E-Print Network (OSTI)

Using covariant quantization of the electromagnetic field, the Casimir force per unit area experienced by a long conducting cylindrical shell, under both Dirichlet and Neumann boundary conditions, is calculated. The renormalization procedure is based on the plasma cut-off frequency for real conductors. The real case of a gold (silver) cylindrical shell is considered and the corresponding electromagnetic Casimir pressure is computed. It is discussed that the Dirichlet and Neumann problems should be considered separately without adding their corresponding results.

H. Razmi; N. Fadaei

2013-07-31T23:59:59.000Z

257

Guidelines for Electromagnetic Compatibility Testing of Power Plant Equipment  

Science Conference Proceedings (OSTI)

To continue meeting safety and reliability requirements while controlling costs, operators of nuclear power plants must be able to replace and upgrade equipment in a cost-effective manner. One issue that has been problematic for new plant equipment and especially for digital instrumentation and control (I&C) systems in recent years is electromagnetic compatibility (EMC). The EMC issue usually involves testing to show that critical equipment will not be adversely affected by electromagnetic ...

2013-12-08T23:59:59.000Z

258

Effects of Electromagnetic Fields on Fish and Invertebrates  

Science Conference Proceedings (OSTI)

In this progress report, we describe the preliminary experiments conducted with three fish and one invertebrate species to determine the effects of exposure to electromagnetic fields. During fiscal year 2010, experiments were conducted with coho salmon (Onchrohychus kisutch), California halibut (Paralicthys californicus), Atlantic halibut (Hippoglossus hippoglossus), and Dungeness crab (Cancer magister). The work described supports Task 2.1.3: Effects on Aquatic Organisms, Subtask 2.1.3.1: Electromagnetic Fields.

Schultz, Irvin R.; Woodruff, Dana L.; Marshall, Kathryn E.; Pratt, William J.; Roesijadi, Guritno

2010-10-13T23:59:59.000Z

259

Potential field and electromagnetic studies: Introduction  

DOE Green Energy (OSTI)

Several aeromagnetic surveys have been flown over Long Valley at different altitudes and line spacings. The one most often referred to was a high level (4 km or 13,200 feet above sea level barometric survey) flown by the USGS in 1973 along E-W lines spaced 1.7 km apart. Investigators attempted a quantitative interpretation of the data, and suggested that extensive post-caldera hydrothermal activity may have drastically altered the composition of the titanomagnetites in the Bishop Tuff, causing the magnetic low in the area of the resurgent dome. Others have reported in informal conversations, as is now supported by holes M-1 and 44-016, that the low in the western part of the caldera is the result of lower magnetization of the post-caldera volcanics and a large wedge of Paleozoic metasediments that floor the caldera. The true nature of the magnetic high on the eastern flank of the resurgent dome has been revealed by recent paleomagnetic work and from a detailed aeromagnetic survey flown 400 feet above terrain for the USGS in 1979. 6 refs., 2 figs.

Goldstein, N.E.

1987-03-01T23:59:59.000Z

260

Solar energy industry survey  

SciTech Connect

This report describes the results of a survey of companies in the solar energy industry. The general objective of the survey was to provide information to help evaluate the effectiveness of technology transfer mechanisms for the development of the solar industry. The specific objectives of the survey included: (1) determination of the needs of the solar industry; (2) identification of special concerns of the solar industry; and (3) determination of the types of technology transfer mechanisms that would be most helpful to the solar industry in addressing these needs and concerns. The major focus was on technical problems and developments, but institutional and marketing considerations were also treated. The majority of the sample was devoted to the solar heating and cooling (SHAC) component of the industry. However, a small number of photovoltaic (PV), wind, and power generation system manufacturers were also surveyed. Part I discusses the methodology used in the selection, performance, and data reduction stages of the survey, comments on the nature of the responses, and describes the conclusions drawn from the survey. The latter include both general conclusions concerning the entire solar industry, and specific conclusions concerning component groups, such as manufacturers, architects, installers, or dealers. Part II consists of tabulated responses and non-attributed verbatim comments that summarize and illustrate the survey results.

1979-08-06T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

The underground electromagnetic pulse: Four representative models  

Science Conference Proceedings (OSTI)

I describe four phenomenological models by which an underground nuclear explosion may generate electromagnetic pulses: Compton current asymmetry (or ''Compton dipole''); Uphole conductor currents (or ''casing currents''); Diamagnetic cavity plasma (or ''magnetic bubble''); and Large-scale ground motion (or ''magneto-acoustic wave''). I outline the corresponding analytic exercises and summarize the principal results of the computations. I used a 10-kt contained explosion as the fiducial case. Each analytic sequence developed an equivalent source dipole and calculated signal waveforms at representative ground-surface locations. As a comparative summary, the Compton dipole generates a peak source current moment of about 12,000 A/center dot/m in the submicrosecond time domain. The casing-current source model obtains an equivalent peak moment of about 2 /times/ 10/sup 5/ A/center dot/m in the 10- to 30-/mu/s domain. The magnetic bubble produces a magnetic dipole moment of about 7 /times/ 10/sup 6/ A/center dot/m/sup 2/, characterized by a 30-ms time structure. Finally, the magneto-acoustic wave corresponds to a magnetic dipole moment of about 600 A/center dot/m/sup 2/, with a waveform showing 0.5-s periodicities. 8 refs., 35 figs., 7 tabs.

Wouters, L.F.

1989-06-01T23:59:59.000Z

262

Binary power multiplier for electromagnetic energy  

DOE Patents (OSTI)

A technique for converting electromagnetic pulses to higher power amplitude and shorter duration, in binary multiples, splits an input pulse into two channels, and subjects the pulses in the two channels to a number of binary pulse compression operations. Each pulse compression operation entails combining the pulses in both input channels and selectively steering the combined power to one output channel during the leading half of the pulses and to the other output channel during the trailing half of the pulses, and then delaying the pulse in the first output channel by an amount equal to half the initial pulse duration. Apparatus for carrying out each of the binary multiplication operation preferably includes a four-port coupler (such as a 3 dB hybrid), which operates on power inputs at a pair of input ports by directing the combined power to either of a pair of output ports, depending on the relative phase of the inputs. Therefore, by appropriately phase coding the pulses prior to any of the pulse compression stages, the entire pulse compression (with associated binary power multiplication) can be carried out solely with passive elements.

Farkas, Zoltan D. (203 Leland Ave., Menlo Park, CA 94025)

1988-01-01T23:59:59.000Z

263

Pulsed electromagnetic acceleration of exploded wire plasmas  

Science Conference Proceedings (OSTI)

A simple analysis of the dynamic state of a current-conducting high-density plasma column, resulting from an exploded wire between the conductors of a rail-gun accelerator or one or more wires strung between the anode and cathode conductors in a pulsed-power generator diode, is given on the basis of a one-dimensional magnetohydrodynamics model. Spatial distributions of the current density, magnetic field, temperature, and particle density are calculated as well as the temporal current, voltage, and impedance histories. The model self-consistently treats the accelerator load transition through its solid, melt, vapor, and plasma states in the presence of its supply source and feed network. Once formed and accelerated, the plasma state calculations show expansion cooling across the self-induced magnetic field if the Bennett condition is not satisfied. The model predictions are compared to two experimental situations. The first involves the delivery of some hundreds of Joules of stored energy to the wire load. For this case, good agreement between the calculated and observed plasma state is obtained. The second situation involves the delivery of many thousands of Joules to the wire load. For this case and dependent upon the wire mass, diameter, number of wires exploded, their separation, and the pulsed energy electrical wave shapes, the magnetohydrodynamic results can be qualitatively incorrect. The necessity of an electromagnetic particle simulation approach is indicated in order to resolve the magnetic rope-like structure and filamentation observed in the very energetic plasmas.

Peratt, A.L.; Koert, P.

1983-11-01T23:59:59.000Z

264

Nucleon Structure Studies with Electromagnetic Probes  

Science Conference Proceedings (OSTI)

Summarized in this report is the progress achieved during the period from March 1, 2008 to June 14, 2009 under contract number DE-FG02-03ER41252. This is the final technical report under this contract. The experimental work described here is part of the electromagnetic nuclear physics program of the CEBAF Large Acceptance Spectrometer (CLAS) Collaboration at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) that published 17 journal articles during the period of this report. One of these journal articles reported on the results of precise measurements of the neutron magnetic form factor. I was a spokesperson on this experiment and the publication of these results is the culmination of years of effort by a small subset of the CLAS Collaboration. As usual, undergraduate students were involved in all aspects of this work. Three Union College students participated in this program during the window of this report and one presented a paper on his work at the 2009 National Conference on Undergraduate Research (NCUR22). In this report, I discuss recent progress on the measurements of the neutron magnetic form factor and describe my service work for the CLAS Collaboration.

Vineyard, Michael F.

2011-03-31T23:59:59.000Z

265

Electromagnetic anti-jam telemetry tool  

DOE Patents (OSTI)

A mud-pulse telemetry tool includes a tool housing, a motor disposed in the tool housing, and a magnetic coupling coupled to the motor and having an inner shaft and an outer shaft. The tool may also include a stator coupled to the tool housing, a restrictor disposed proximate the stator and coupled to the magnetic coupling, so that the restrictor and the stator adapted to generate selected pulses in a drilling fluid when the restrictor is selectively rotated. The tool may also include a first anti-jam magnet coupled to the too housing, and an second anti-jam magnet disposed proximate the first anti-jam magnet and coupled to the inner shaft and/or the outer shaft, wherein at least one of the first anti-jam magnet and the second anti-jam magnet is an electromagnet, and wherein the first anti-jam magnet and the second anti-jam magnet are positioned with adjacent like poles.

Ganesan, Harini (Sugar Land, TX); Mayzenberg, Nataliya (Missouri City, TX)

2008-02-12T23:59:59.000Z

266

Electromagnetic polarizabilities: Lattice QCD in background fields  

Science Conference Proceedings (OSTI)

Chiral perturbation theory makes definitive predictions for the extrinsic behavior of hadrons in external electric and magnetic fields. Near the chiral limit, the electric and magnetic polarizabilities of pions, kaons, and nucleons are determined in terms of a few well-known parameters. In this limit, hadrons become quantum mechanically diffuse as polarizabilities scale with the inverse square-root of the quark mass. In some cases, however, such predictions from chiral perturbation theory have not compared well with experimental data. Ultimately we must turn to first principles numerical simulations of QCD to determine properties of hadrons, and confront the predictions of chiral perturbation theory. To address the electromagnetic polarizabilities, we utilize the background field technique. Restricting our attention to calculations in background electric fields, we demonstrate new techniques to determine electric polarizabilities and baryon magnetic moments for both charged and neutral states. As we can study the quark mass dependence of observables with lattice QCD, the lattice will provide a crucial test of our understanding of low-energy QCD, which will be timely in light of ongoing experiments, such as at COMPASS and HI gamma S.

W. Detmold, B.C. Tiburzi, A. Walker-Loud

2012-04-01T23:59:59.000Z

267

The ALICE electromagnetic calorimeter high level triggers  

E-Print Network (OSTI)

The ALICE (A Large Ion Collider Experiment) detector yields a huge sample of data from different sub-detectors. On-line data processing is applied to select and reduce the volume of the stored data. ALICE applies a multi-level hardware trigger scheme where fast detectors are used to feed a three-level (L0, L1, and L2) deep chain. The High-Level Trigger (HLT) is a fourth filtering stage sitting logically between the L2 trigger and the data acquisition event building. The EMCal detector comprises a large area electromagnetic calorimeter that extends the momentum measurement of photons and neutral mesons up to $p_T=250$ GeV/c, which improves the ALICE capability to perform jet reconstruction with measurement of the neutral energy component of jets. An online reconstruction and trigger chain has been developed within the HLT framework to sharpen the EMCal hardware triggers, by combining the central barrel tracking information with the shower reconstruction (clusters) in the calorimeter. In the present report the status and the functionality of the software components developed for the EMCal HLT online reconstruction and trigger chain will be discussed, as well as preliminary results from their commissioning performed during the 2011 LHC running period.

F. Ronchetti; F. Blanco; M. Figueredo; A. G. Knospe; L. Xaplanteris for the ALICE HLT Collaboration

2012-09-17T23:59:59.000Z

268

Calibrating Accelerometers Using an Electromagnetic Launcher  

SciTech Connect

A Pulse Forming Network (PFN), Helical Electromagnetic Launcher (HEML), Command Module (CM), and Calibration Table (CT) were built and evaluated for the combined ability to calibrate an accelerometer. The PFN has a maximum stored energy of 19.25 kJ bank and is fired by a silicon controlled rectifier (SCR), with appropriate safety precautions. The HEML is constructed out of G-10 fiberglass and is designed to accelerate 600 grams to 10 meters per second. The CM is microcontroller based running Arduino Software. The CM has a keypad input and 7 segment outputs of the bank voltage and desired voltage. After entering a desired bank voltage, the CM controls the charge of the PFN. When the two voltages are equal it allows the fire button to send a pulse to the SCR to fire the PFN and in turn, the HEML. The HEML projectile's tip hits a target that is held by the CT. The CT consists of a table to hold the PFN and HEML, a vacuum chuck, air bearing, velocity meter and catch pot. The Target is held with the vacuum chuck awaiting impact. After impact, the air bearing allows the target to fall freely for the velocity meter to get an accurate reading. A known acceleration is determined from the known change in velocity of the target. Thus, if an accelerometer was attached to the target, the measured value can be compared to the known value.

Erik Timpson

2012-05-13T23:59:59.000Z

269

Horizontal electromagnetic casting of thin metal sheets  

DOE Patents (OSTI)

Thin metal sheets are cast by magnetically suspending molten metal deposited within a ferromagnetic yoke and between AC conducting coils and linearly displacing the magnetically levitated liquid metal while it is being cooled to form a solid metal sheet. Magnetic flux increases as the molten metal sheet moves downward and decreases as the molten metal sheet moves upward to stabilize the sheet and maintain it in equilibrium as it is linearly displaced and solidified by cooling gases. A conducting shield is electrically coupled to the molten metal sheet by means of either metal sheet engaging rollers or brushes on the solidified metal, and by means of an electrode in the vessel containing the molten metal thereby providing a return path for the eddy currents induced in the metal sheet by the AC coil generated magnetic flux. Variation in the geometry of the conducting shield allows the magnetic flux between the metal sheet and the conducting shield to be varied and the thickness in surface quality of the metal sheet to be controlled. Side guards provide lateral containment for the molten metal sheet and stabilize and shape the magnetic field while a leader sheet having electromagnetic characteristics similar to those of the metal sheet is used to start the casting process and precedes the molten metal sheet through the magnet and forms a continuous sheet therewith. The magnet may be either U-shaped with a single racetrack coil or may be rectangular with a pair of facing bedstead coils.

Hull, John R. (Hinsdale, IL); Lari, Robert J. (Aurora, IL); Praeg, Walter F. (Palos Park, IL); Turner, Larry R. (Naperville, IL)

1987-01-01T23:59:59.000Z

270

Horizontal electromagnetic casting of thin metal sheets  

DOE Patents (OSTI)

Thin metal sheets are cast by magnetically suspending molten metal deposited within a ferromagnetic yoke and between AC conducting coils and linearly displacing the magnetically levitated liquid metal while it is being cooled to form a solid metal sheet. Magnetic flux increases as the molten metal sheet moves downward and decreases as the molten metal sheet moves upward to stabilize the sheet and maintain it in equilibrium as it is linearly displaced and solidified by cooling gases. A conducting shield is electrically coupled to the molten metal sheet by means of either metal sheet engaging rollers or brushes on the solidified metal, and by means of an electrode in the vessel containing the molten metal thereby providing a return path for the eddy currents induced in the metal sheet by the AC coil generated magnetic flux. Variation in the geometry of the conducting shield allows the magnetic flux between the metal sheet and the conducting shield to be varied and the thickness in surface quality of the metal sheet to be controlled. Side guards provide lateral containment for the molten metal sheet and stabilize and shape the magnetic field while a leader sheet having electromagnetic characteristics similar to those of the metal sheet is used to start the casting process and precedes the molten metal sheet through the magnet and forms a continuous sheet therewith. The magnet may be either U-shaped with a single racetrack coil or may be rectangular with a pair of facing bedstead coils.

Hull, John R. (Hinsdale, IL); Lari, Robert J. (Aurora, IL); Praeg, Walter F. (Palos Park, IL); Turner, Larry R. (Naperville, IL)

1988-01-01T23:59:59.000Z

271

Aeromagnetic Survey At Mt St Helens Area (Towle, 1983) | Open Energy  

Open Energy Info (EERE)

Towle, 1983) Towle, 1983) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aeromagnetic Survey At Mt St Helens Area (Towle, 1983) Exploration Activity Details Location Mt St Helens Area Exploration Technique Aeromagnetic Survey Activity Date Usefulness useful DOE-funding Unknown Notes The VLF method has proved useful in mapping the crater and central dome of Mount St. Helens. More detailed and extensive VLF investigations as well as other electrical and electromagnetic studies will be useful in determining the electrical structure of Mount St. Helens in more detail. Electrical and electromagnetic methods would be especially useful in determining the actual electrical conductivity of partial melt beneath the dome. The ability of these methods to determine the correlation of surface features

272

Generalized survey propagation  

Science Conference Proceedings (OSTI)

Survey propagation (SP) has recently been discovered as an efficient algorithm in solving classes of hard constraint-satisfaction problems (CSP). Powerful as it is, SP is still a heuristic algorithm, and further understanding its algorithmic nature, ...

Ronghui Tu / Yongyi Mao, Jiying Zhao

2011-01-01T23:59:59.000Z

273

NEPA COMPLIANCE SURVEY  

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

n tal Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope oc:c:urs, Project Lead must submit a new NEPA Compliance Survey and contact the Technical...

274

Site Energy Surveys  

E-Print Network (OSTI)

Operating improvements and selected investments have already improved US refining and petrochemical energy utilization efficiency by about 20%, compared to 1972 operating efficiencies. This is equivalent to saving well over 250,000 B/D of crude; which is equal to the output of several major synthetic fuels projects! Site Energy Surveys can be an important technique for achieving the next major increment (1520%) in energy savings, even when using existing technology. These surveys encompass the total site, all associated plants, and investigate all aspects of energy requirements, heat integration configurations, steam/power cogeneration possibilities and inefficient practices. After potential energy conservation opportunities have been identified, screening is conducted to develop their economic attractiveness. This presentation reviews factors leading to the need for Site Energy Surveys, the objectives for conducting surveys, the approach utilized, considerations given to values of energy and concludes with overall improvements achieved.

Lockett, W., Jr.; Guide, J. J.

1981-01-01T23:59:59.000Z

275

Evaluating Our Instruction: Surveys  

E-Print Network (OSTI)

you put in; and as the grandest mill in the world will not extract wheat flour from peascod, so pagesEvaluating Our Instruction: Surveys Mathematics may be compared to a mill of exquisite workmanship

Maryland at College Park, University of

276

INNOVATIVE ELECTROMAGNETIC SENSORS FOR PIPELINE CRAWLERS  

Science Conference Proceedings (OSTI)

Internal inspection of pipelines is an important tool for ensuring safe and reliable delivery of fossil energy products. Current inspection systems that are propelled through the pipeline by the product flow cannot be used to inspect all pipelines because of the various physical barriers they encounter. Recent development efforts include a new generation of powered inspection platforms that crawl slowly inside a pipeline and are able to maneuver past the physical barriers that can limit inspection. At Battelle, innovative electromagnetic sensors are being designed and tested for these new pipeline crawlers. The various sensor types can be used to assess a wide range of pipeline anomalies including corrosion, mechanical damage, and cracks. Battelle has completed the second year of work on a projected three-year development effort. In the first year, two innovative electromagnetic inspection technologies were designed and tested. Both were based on moving high-strength permanent magnets to generate inspection energy. One system involved translating permanent magnets towards the pipe. A pulse of electric current would be induced in the pipe to oppose the magnetization according to Lenz's Law. The decay of this pulse would indicate the presence of defects in the pipe wall. This inspection method is similar to pulsed eddy current inspection methods, with the fundamental difference being the manner in which the current is generated. Details of this development effort were reported in the first semiannual report on this project. The second inspection methodology is based on rotating permanent magnets. The rotating exciter unit produces strong eddy currents in the pipe wall. At distances of a pipe diameter or more from the rotating exciter, the currents flow circumferentially. These circumferential currents are deflected by pipeline defects such as corrosion and axially aligned cracks. Simple sensors are used to detect the change in current densities in the pipe wall. The second semiannual report on this project reported on experimental and modeling results. The results showed that the rotating system was more adaptable to pipeline inspection and therefore only this system will be carried into the second year of the sensor development. In the third reporting period, the rotating system inspection was further developed. Since this is a new inspection modality without published fundamentals to build upon, basic analytical and experimental investigations were performed. A closed form equation for designing rotating exciters and positioning sensors was derived from fundamental principles. Also signal processing methods were investigated for detection and assessment of pipeline anomalies. A lock in amplifier approach was chosen as the method for detecting the signals. Finally, mechanical implementations for passing tight restrictions such as plug valves were investigated. This inspection concept is new and unique; a United States patent application has been submitted. In this fourth reporting period, the rotating system inspection was further developed. A multichannel real-time data recorder system was implemented and fundamental experiments were conducted to provide data to aid in the design of the rotating magnetizer system. An unexpected but beneficial result was achieved when examining the separation between the rotating magnet and the pipe wall; separations of over an inch could be tolerated. Essentially no change in signal from corrosion anomalies could be detected for separations up to 1.35 inches. The results presented in this report will be used to achieve the next deliverable, designs of components of the rotating inspection system that will function with inspection crawlers in a pipeline environment.

J. Bruce Nestleroth

2005-11-30T23:59:59.000Z

277

On electromagnetic induction in electric conductors  

E-Print Network (OSTI)

Experimental validation of the Faraday's law of electromagnetic induction (EMI) is performed when an electromotive force is generated in thin copper turns, located inside a large magnetic coil. It has been established that the electromotive force (emf) value should be dependent not only on changes of the magnetic induction flux through a turn and on symmetry of its crossing by magnetic power lines also. The law of EMI is applicable in sufficient approximation in case of the changes of the magnetic field near the turn are symmetrical. Experimental study of the induced emf in arcs and a direct section of the conductor placed into the variable field has been carried out. Linear dependence of the induced emf on the length of the arc has been ascertained in case of the magnetic field distribution symmetry about it. Influence of the magnetic field symmetry on the induced emf in the arc has been observed. The curve of the induced emf in the direct section over period of current pulse is similar to this one for the turns and arcs. The general law of EMI for a curvilinear conductor has been deduced. Calculation of the induced emf in the turns wrapped over it and comparison with the experimental data has been made. The proportionality factor has been ascertained for the law. Special conditions have been described, when the induced emf may not exist in the presence of inductive current. Theoretical estimation of the inductive current has been made at a induced low voltage in the turn. It has been noted the necessity to take into account the concentration of current carriers in calculation of the induced emf in semiconductors and ionized conductors.

Alexander I. Korolev

2013-02-22T23:59:59.000Z

278

The crosswell electromagnetic response of layered media  

SciTech Connect

Crosswell electromagnetic measurements are a promising new geophysical technique for mapping subsurface electrical conductivity which can provide information about the subsurface distribution of water, oil or steam. In this work the fields from a low frequency vertical magnetic dipole have been examined from the specific point of view of their application to the determination of the conductivity of a layered medium. The source and the receiver were placed inside two separate boreholes. The range of penetration of such a crosswell system for typical earth resistivities and for currently available transmitter and receiver technologies was found to be up to 1,000 meters so problems in ground water and petroleum reservoir characteristics can be practically examined. An analysis of the behavior of the magnetic fields at the boundary between two half-spaces showed that the horizontal magnetic field component, H{rho}, and the vertical derivative of a vertical component, {delta}H{sub z}/{delta}z, are more sensitive to conductivity variations than H{sub z}. The analysis of derivatives led to the concept of measuring the conductivity directly using a second vertical derivative of H{sub z}. Conductivity profiles interpreted from field data using this technique reproduced accurately the electrical logs for a test site near Devine, Texas. It was found in this study that the inversion techniques are more stable when the first vertical derivative of H{sub z} is used rather than H{sub z} itself. Using data from a salt water injection experiment at the Richmond Field test site in Berkeley it was also found that these robust layer inversions were successful in identifying the preferential flow direction of the injected brine to four boreholes surrounding the injection well.

Deszcz-Pan, M. [Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering]|[Lawrence Berkeley Lab., CA (United States). Earth Sciences Div.

1994-04-01T23:59:59.000Z

279

Direct-Current Resistivity Survey At Valles Caldera - Redondo Area (Wilt &  

Open Energy Info (EERE)

Wilt & Wilt & Haar, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity Survey At Valles Caldera - Redondo Area (Wilt & Haar, 1986) Exploration Activity Details Location Valles Caldera - Redondo Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes Telluric profiles, magnetotelluric sounding, dc resistivity, and electromagnetic sounding surveys were all performed over the caldera in hopes of outlining deep drilling targets (Group 7 Inc., 1972; McPhar, 1973; Geonomics Inc., 1976). These data are used to help define the electrical structure in the reservoir region. Some of the data were reinterpreted using computer models, and interpretations from the various surveys were

280

Direct-Current Resistivity Survey At Valles Caldera - Sulphur Springs Area  

Open Energy Info (EERE)

Wilt & Haar, 1986) Wilt & Haar, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity Survey At Valles Caldera - Sulphur Springs Area (Wilt & Haar, 1986) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes Telluric profiles, magnetotelluric sounding, dc resistivity, and electromagnetic sounding surveys were all performed over the caldera in hopes of outlining deep drilling targets (Group 7 Inc., 1972; McPhar, 1973; Geonomics Inc., 1976). These data are used to help define the electrical structure in the reservoir region. Some of the data were reinterpreted using computer models, and interpretations from the various surveys were

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Telluric Survey At Clear Lake Area (Skokan, 1993) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Telluric Survey At Clear Lake Area (Skokan, 1993) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Telluric Survey At Clear Lake Area (Skokan, 1993) Exploration Activity Details Location Clear Lake Area Exploration Technique Telluric Survey Activity Date Usefulness useful DOE-funding Unknown Notes By far, the greatest effort in the area of Mount Konocti to understand the deep structure and hydrology was accomplished through use of a controlled source transient electromagnetic survey (Keller and Jacobson, 1983 ). A grounded-wire source of 1.1 km in length was energized with a current of

282

Direct-Current Resistivity Survey At Kilauea Summit Area (Keller, Et Al.,  

Open Energy Info (EERE)

1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity Survey At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes An electromagnetic sounding survey by Jackson and Keller (1972) defined a strong resistivity anomaly above the center of inflation associated with volcanic activity during the early 1960's. References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Direct-Current_Resistivity_Survey_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=510532

283

Control and monitoring method and system for electromagnetic forming processes  

DOE Patents (OSTI)

A process, system, and improvement for a process for electromagnetic forming of a workpiece in which characteristics of the workpiece such as its geometry, electrical conductivity, quality, and magnetic permeability can be determined by monitoring the current and voltage in the workcoil. In an electromagnet forming process in which a power supply provides current to a workcoil and the electromagnetic field produced by the workcoil acts to form the workpiece, the dynamic interaction of the electromagnetic fields produced by the workcoil with the geometry, electrical conductivity, and magnetic permeability of the workpiece, provides information pertinent to the physical condition of the workpiece that is available for determination of quality and process control. This information can be obtained by deriving in real time the first several time derivatives of the current and voltage in the workcoil. In addition, the process can be extended by injecting test signals into the workcoil during the electromagnetic forming and monitoring the response to the test signals in the workcoil. 3 figs.

Kunerth, D.C.; Lassahn, G.D.

1989-06-30T23:59:59.000Z

284

NEPA COMPLIANCE SURVEY  

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

Range Management Survey Date: Range Management Survey Date: 12/6/10 DOE Code: 6730.020.0000 Contractor 8067-788 Code: Project Lead: I Anthony Bowler Project Overview We will use a backhoe to get samples for our range management survey. At each site. one or 1. Brief project descnptlon [include anything that two holes will be excavated, and the samples will be taken from 0-1' and 1-2' deep. After could 1mpad the environment] excavating and the samples taken. the remaining soli Will be replaced and tamped back into 2. Legal location place. 3. Duratfon of tile project See attached NPR-3 Maps for preliminary locations : N~ area well 6-A-2\ NVV SW Section 21 . 4. Major equipment to be used f Township 39N, Range 78E) Middle area well 48-1 -Sh (SE SW 34 Township 39N, Range 4 WU-LSIT£5

285

Operations Improvement Surveys  

E-Print Network (OSTI)

Exxon Chemical Company developed unique site-wide energy optimization technology in the mid1970's. This technology was applied by means of site energy surveys which were carried out at every major Exxon facility throughout the world during the 1976-1981 timeframe. The first 20% of energy savings, versus the 1972 reference, had already been captured or was in progress via conventional energy conservation methods. The site energy surveys identified attractive investments to save a second 20% of energy use. In early 1982, Exxon Corp. started to apply this same technology to its major facilities to define attractive NO INVESTMENT and LOW INVESTMENT operational improvement savings which could be implemented quickly. This presentation covers Exxon's approach to site energy optimization and the Operations Improvement Survey Program. The Program has identified at many sites, an average of 5% reduction in today's energy costs at No/Low investment plus additional savings in the feedstock and energy supply areas.

Guide, J. J.; O'Brien, W. J.

1984-01-01T23:59:59.000Z

286

AERIAL RADIOLOGICAL SURVEYS  

SciTech Connect

Measuring terrestrial gamma radiation from airborne platforms has proved to be a useful method for characterizing radiation levels over large areas. Over 300 aerial radiological surveys have been carried out over the past 25 years including U.S. Department of Energy (DOE) sites, commercial nuclear power plants, Formerly Utilized Sites Remedial Action Program/Uranium Mine Tailing Remedial Action Program (FUSRAP/UMTRAP) sites, nuclear weapons test sites, contaminated industrial areas, and nuclear accident sites. This paper describes the aerial measurement technology currently in use by the Remote Sensing Laboratory (RSL) for routine environmental surveys and emergency response activities. Equipment, data-collection and -analysis methods, and examples of survey results are described.

Proctor, A.E.

1997-06-09T23:59:59.000Z

287

Method for imaging with low frequency electromagnetic fields  

DOE Patents (OSTI)

A method for imaging with low frequency electromagnetic fields, and for interpreting the electromagnetic data using ray tomography, in order to determine the earth conductivity with high accuracy and resolution. The imaging method includes the steps of placing one or more transmitters, at various positions in a plurality of transmitter holes, and placing a plurality of receivers in a plurality of receiver holes. The transmitters generate electromagnetic signals which diffuse through a medium, such as earth, toward the receivers. The measured diffusion field data H is then transformed into wavefield data U. The traveltimes corresponding to the wavefield data U, are then obtained, by charting the wavefield data U, using a different regularization parameter .alpha. for each transform. The desired property of the medium, such as conductivity, is then derived from the velocity, which in turn is constructed from the wavefield data U using ray tomography.

Lee, Ki H. (Lafayette, CA); Xie, Gan Q. (Berkeley, CA)

1994-01-01T23:59:59.000Z

288

Through-Barrier Electromagnetic Communication and Sensing: Advances in  

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

Through-Barrier Electromagnetic Communication and Sensing: Advances in Through-Barrier Electromagnetic Communication and Sensing: Advances in Wideband Radio-Wave Communications and ..... Speaker(s): Farid Dowla Date: June 1, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Mary Ann Piette (Complete seminar title is: Through-Barrier Electromagnetic Communication and Sensing: Advances in Wideband Radio-Wave Communications and Radar Imaging, Radio-Frequency (RF) Tags and Tera-Hertz (THz) Standoff Detection Spectroscopy) In many remote sensing problems there is a critical need to detect and image objects through barriers, such as buildings, with high reliability and resolution and at long ranges. A related problem is the wireless communication and geolocation of transceivers in harsh RF environments, such as in urban areas and underground caves, where

289

Z-Axis Tipper Electromagnetics | Open Energy Information  

Open Energy Info (EERE)

Z-Axis Tipper Electromagnetics Z-Axis Tipper Electromagnetics Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Z-Axis Tipper Electromagnetics Details Activities (2) Areas (2) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Magnetotelluric Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 4,827.00482,700 centUSD 4.827 kUSD 0.00483 MUSD 4.827e-6 TUSD / mile Median Estimate (USD): 6,206.14620,614 centUSD 6.206 kUSD 0.00621 MUSD 6.20614e-6 TUSD / mile High-End Estimate (USD): 17,239.291,723,929 centUSD 17.239 kUSD 0.0172 MUSD 1.723929e-5 TUSD / mile Dictionary.png

290

Electromagnetic Transition in Waveguide with Application to Lasers  

E-Print Network (OSTI)

The electromagnetic transition of two-level atomic systems in a waveguide is calculated. Compared with the result in free space, the spontaneous emission rate decrease because the phase space is smaller, and meanwhile, some resonance appears in some cases. Moreover, the influence of non-uniform electromagnetic field in a waveguide on absorption and stimulated emission is considered. Applying the results to lasers, a method to enhance the laser power is proposed. PACS codes: 42.50.ct, 42.55.Ah 1

unknown authors

2002-01-01T23:59:59.000Z

291

Improved Magnetic Fusion Energy Economics via Massive Resistive Electromagnets  

SciTech Connect

Abandoning superconductors for magnetic fusion reactors and instead using resistive magnet designs based on cheap copper or aluminum conductor material operating at "room temperature" (300 K) can reduce the capital cost per unit fusion power and simplify plant operations. By increasing unit size well beyond that of present magnetic fusion energy conceptual designs using superconducting electromagnets, the recirculating power fraction needed to operate resistive electromagnets can be made as close to zero as needed for economy without requiring superconductors. Other advantages of larger fusion plant size, such as very long inductively driven pulses, may also help reduce the cost per unit fusion power.

Woolley, R.D.

1998-08-19T23:59:59.000Z

292

Wireless sensor network survey  

Science Conference Proceedings (OSTI)

A wireless sensor network (WSN) has important applications such as remote environmental monitoring and target tracking. This has been enabled by the availability, particularly in recent years, of sensors that are smaller, cheaper, and intelligent. These ... Keywords: Protocols, Sensor network deployment, Sensor network services, Survey, Wireless sensor network

Jennifer Yick; Biswanath Mukherjee; Dipak Ghosal

2008-08-01T23:59:59.000Z

293

Recoil polarization measurements of the proton electromagnetic form factor ratio to high momentum transfer  

E-Print Network (OSTI)

The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electronnucleon scattering. These form factors are functions ...

Puckett, Andrew James Ruehe

2010-01-01T23:59:59.000Z

294

In-Flight Characterization of the Electromagnetic Environment Inside an Airliner  

Science Conference Proceedings (OSTI)

In 1995, the NASA Langley Research Center conducted a series of experimental measurements that characterized the electromagnetic environment (EME) inside a Boeing 757 airliner while in flight. Measurements were made of the electromagnetic energy coupled ...

Moeller Karl J.; Dudley Kenneth L.; Quach Cuong C.; Koppen Sandra V.

2001-03-01T23:59:59.000Z

295

Rayleigh-Taylor-Induced electromagnetic fields in laser-produced plasmas  

E-Print Network (OSTI)

Spontaneous electromagnetic fields can be important to the dynamic evolution of a plasma by directing heat flow as well as providing additional pressures on the conducting fluids through the Lorentz force. Electromagnetic ...

Manuel, Mario John-Errol

2013-01-01T23:59:59.000Z

296

Electromagnetic analysis of forces and torques on the ITER shield modules due to plasma disruption.  

SciTech Connect

An electromagnetic analysis is performed on the ITER shield modules under different plasma disruption scenarios using the OPERA-3d software. The modeling procedure is explained, electromagnetic torques are presented, and results of the modeling are discussed.

Kotulski, Joseph Daniel; Coats, Rebecca Sue; Pasik, Michael Francis; Ulrickson, Michael Andrew

2009-06-01T23:59:59.000Z

297

Cryogenic heat pipe for cooling high temperature superconductors with application to Electromagnetic Formation Flight Satellites  

E-Print Network (OSTI)

An emerging method of propellant-less formation flight propulsion is the use of electromagnets coupled with reaction wheels. This technique is called Electromagnetic Formation Flight (EMFF). In order to create a large ...

Kwon, Daniel W., 1980-

2009-01-01T23:59:59.000Z

298

2010 Federal Employee Viewpoint Survey  

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

Federal Employee Viewpoint Survey Federal Employee Viewpoint Survey Page 1 of 20 ________________________________________________________________________________________________________________________________________________________________________________________________________________ Department of Energy 2010 Federal Employee Viewpoint Survey: Trend Report (2006 and 2008 results have been recalculated to exclude Do Not Know/No Basis to Judge responses) Response Summary Surveys Completed 2010 Governmentwide 263,475 2010 Department of Energy 6,648 2008 Department of Energy 6,093 2006 Department of Energy 7,742 This 2010 Federal Employee Viewpoint Survey Report provides summary results for your department or agency. The results include Positive, Neutral, and Negative response percentages for each survey item. For each of the

299

FACILITY SURVEY & TRANSFER Facility Survey & Transfer Overview  

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

SURVEY & TRANSFER SURVEY & TRANSFER Facility Survey & Transfer Overview Transfer Activities Checklist Pre-Survey Information Request Survey Report Content Detailed Walkdown Checklist Walkdown Checklist Clipboard Aids S & M Checklist Survey Report Example - Hot Storage Garden Survey Report Example - Tritium System Test Assembly Survey Report Example - Calutron Overview As DOE facilities become excess, many that are radioactively and/or chemically contaminated will become candidate for transfer to DOE-EM for deactivation and decommissioning. Requirements and guidance for such transfers are contained in:  DOE Order 430.1B Chg. 2, REAL PROPERTY & ASSET MANAGEMENT  DOE Guide 430.1-5, TRANSITION IMPLEMENTATION GUIDE The transfer process is illustrated in the Transfer Process figure. The purpose here is to provide examples of methods and

300

Power allocation for irregularly modulated MIMO signaling with iterative frequency domain detector  

Science Conference Proceedings (OSTI)

A new power allocation method for irregularly modulated signaling in single carrier point-to-point multiple input multiple output (MIMO) systems with an iterative frequencydomain (FD) soft cancellation (SC) minimum mean squared error (MMSE) equalization ...

Juha Karjalainen; Antti Tlli; Marian Codreanu; Markku Juntti; Tad Matsumoto

2009-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

A Frequency-Domain Description of a Lock-in Amplifier John H. Scofield  

E-Print Network (OSTI)

parameter, arctan [kd /(nd 1)] I Radiation intensity Ib Blackbody radiation intensity I0 Incident intensity

Scofield, John H.

302

A Multivariate Frequency-Domain Approach to Long-Lead Climatic Forecasting  

Science Conference Proceedings (OSTI)

Guided by the increasing awareness and detectability of spatiotemporally organized climatic variability at interannual and longer timescales, the authors motivate the paradigm of a climate system that exhibits excitations of quasi-oscillatory ...

Balaji Rajagopalan; Michael E. Mann; Upmanu Lall

1998-03-01T23:59:59.000Z

303

Quantized Gravitational Radiation from Black Holes and other Macro Holeums in the Low Frequency Domain  

E-Print Network (OSTI)

A gravitational bound state, called a Macro Holeum, is created from a very large number of microscopic black holes of primordial or a non-primordial origin. All of them undergo orbital motion, under the action of gravity, around their common center of mass. Four classes of Macro Holeum emerge: H, BH, HH and LH. The latter is a massless bundle of gravitational energy moving at the speed of light. The others are Dark Matter objects. BH emits Hawking radiation but the others do not. The presently existing black holes are identified with BH. All, except LH, emit gravitational radiation due to internal quantum transitions. Simple analytic formulae are derived for the energy eigenvalues, mass, radius, density and the frequency of the gravitational radiation emitted by Macro Holeums in terms of just two parameters which can be determined from the gravitational spectra. We predict that black holes have internal structure and that they and other Macro Holeums, having masses in the range 57 solar masses to 870 solar masses, would emit hydrogen-like gravitational radiation in the LIGO frequency range in the form of band or line spectra with a considerable overlapping of the bands. This will be superposed on a uniform background radiation coming from Macro Holeums at large distances greater than 100 Mpc. 04.60.-m, 04.60.Bc, 04.30.-w, 04.30.Tv, 95.35.+d, 95.36.+x

A. L. Chavda; L. K. Chavda

2009-03-04T23:59:59.000Z

304

A frequency domain model for 3 kV dc traction dc-side resonance identification  

SciTech Connect

Frequency-dependent effects in railway traction power systems arise from the impedance of substation and locomotive line filters and the traction line. Harmonic noise from traction drives and substations can excite resonances and produce overcurrent or overvoltage conditions at critical points in the network. In this paper, the harmonic feeding impedances of a 3 kV DC traction system seen from the rectifier substation, locomotive drive converter and pantograph terminals are presented. Several substation and locomotive filters are considered with a frequency-dependent traction line. Resonances attributed to the substation filter, locomotive filter and traction line are separate and distinct, the line introducing poles and zeros in the audio frequency (AF) range which vary in frequency and magnitude with locomotive position.

Hill, R.J. [Univ. of Bath (United Kingdom). School of Electronic and Electrical Engineering; Fracchia, M.; Pozzobon, P.; Sciutto, G. [Univ. degli Studi di Genova (Italy). Dipt. di Ingegneria Elettrica

1995-08-01T23:59:59.000Z

305

Abstract --The harmonic balance method is a frequency domain analysis technique for simulating the large signal  

E-Print Network (OSTI)

of the LO and RF, depending on the application. VCC VRF VLO VDC RL C Vout f LO f RF f IF f RF f LO­= f RF f

Dutton, Robert W.

306

Spectral discrimination of breast pathologies in situ using spatial frequency domain imaging  

E-Print Network (OSTI)

domain imaging. Breast Cancer Research 2013 15:R61. Page 13Laughney et al. Breast Cancer Research 2013, 15:R61 http://Laughney et al. Breast Cancer Research 2013, 15:R61 http://

2013-01-01T23:59:59.000Z

307

Underdetermined blind separation of speech signals with delays in different time-frequency domains  

Science Conference Proceedings (OSTI)

This paper is devoted to the problem of speech signal separation from a set of observables, when the mixing system is underdetermined and static with unknown delays. The approaches appeared in the literature so far have shown that algorithms based on ...

Alessandro Bastari; Stefano Squartini; Francesco Piazza

2005-01-01T23:59:59.000Z

308

Stability Multipliers and Upper Bounds: Connections and Implications for Numerical Veri cation of Frequency Domain  

E-Print Network (OSTI)

is continuous, with F(z) = F(z) o ; 3 #12;and Hfir := ( NX i=0 aizi + biz?i : N 2 N;ai;bi 2 R ) : The next Hfir, i = 1;:::;`, such that (2) holds for all z 2 @D. A similar result can be proved with D replaced possibilities, Hfir can be replaced with Hudr de ned by Hudr := ( NX i=0 ai (1 ?z)i + bi (1 + z)i : N 2 N; ai

Tits, André L.

309

Time and Frequency Domain CCD-Based Thermoreflectance Techniques for High-Resolution Transient Thermal Imaging  

E-Print Network (OSTI)

is in the order of 10-4/K. A blue or green light emitting diode (LED) uniformly illuminates the DUT under

310

Fusion of state space and frequency-domain features for improved microsleep detection  

Science Conference Proceedings (OSTI)

A novel approach for Microsleep Event detection is presented. This is achieved based on multisensor electroencephalogram (EEG) and electrooculogram (EOG) measurements recorded during an overnight driving simulation task. First, using video clips of the ...

David Sommer; Mo Chen; Martin Golz; Udo Trutschel; Danilo Mandic

2005-09-01T23:59:59.000Z

311

Parallel Magnetic Flow Electromagnet for Movable Coil Control-rod Driving Mechanism  

SciTech Connect

The parallel magnetic flow electromagnet can effectively relax the saturation, which easily takes place in the single magnetic flow electromagnet, and accordingly can improve the drive capacity of the movable coil electromagnet drive mechanism for a mobile reactor control rod. (authors)

Jige, Zhang [School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, P.R.China, 1954 Huashan road, Shanghai (China)

2006-07-01T23:59:59.000Z

312

Electromagnetic pump stator frame having power crossover struts  

DOE Patents (OSTI)

A stator frame for an electromagnetic pump includes a casing joined to a hub by a plurality of circumferentially spaced apart struts. At least one electrically insulated power crossover lead extends through the hub, through a crossover one of the struts, and through the casing for carrying electrical current therethrough.

Fanning, Alan W. (San Jose, CA); Olich, Eugene E. (Aptos, CA)

1995-01-01T23:59:59.000Z

313

Electromagnetically induced vorticity control in a quantum fluid velocity field  

E-Print Network (OSTI)

A new method is reported by which it is possible to induce certain flux configurations of desired characteristics via electromagnetic means into the overall quantum probability current of a many-body system in the Madelung hydrodynamic picture. Some indicative applications are also considered with emphasis in HTC and gravitational wave research.

T. E. Raptis

2013-06-19T23:59:59.000Z

314

Gravitational Waves versus Electromagnetic Emission in Gamma-Ray Bursts  

E-Print Network (OSTI)

The recent progress in the understanding the physical nature of neutron star equilibrium configurations and the first observational evidence of a genuinely Short Gamma-Ray Burst, GRB 090227B, allows to give an estimate of the gravitational waves versus electromagnetic emission in a Gamma-Ray Burst.

Jorge A. Rueda; Remo Ruffini

2012-05-31T23:59:59.000Z

315

Electromagnetic fields and transport coefficients in a hot pion gas  

E-Print Network (OSTI)

We present recent results on finite temperature electromagnetic form factors and the electrical conductivity in a pion gas. The standard Chiral Perturbation Theory power counting needs to be modified for transport coefficients. We pay special attention to unitarity and to possible applications for dilepton and photon production.

A. Gomez Nicola; D. Fernandez-Fraile

2006-08-24T23:59:59.000Z

316

A characterization of the electromagnetic stress-energy tensor  

E-Print Network (OSTI)

In a previous paper, we pointed out how a dimensional analysis of the stress-energy tensor of the gravitational field allows to derive the field equation of General Relativity. In this note, we comment an analogous reasoning in presence of a 2-form, that allows to characterize the so called electromagnetic stress-energy tensor.

J. Navarro; J. B. Sancho

2011-01-13T23:59:59.000Z

317

On Scattering of Electromagnetic Waves by a Wormhole  

E-Print Network (OSTI)

We consider scattering of a plane electromagnetic wave by a wormhole. It is found that the scattered wave is partially depolarized and has a specific interference picture depending on parameters of the wormhole and the distance to the observer. It is proposed that such features can be important in the direct search of wormholes.

A. A. Kirillov; E. P. Savelova

2011-03-06T23:59:59.000Z

318

On Scattering of Electromagnetic Waves by a Wormhole  

E-Print Network (OSTI)

We consider scattering of a plane electromagnetic wave by a wormhole. It is found that the scattered wave is partially depolarized and has a specific interference picture depending on parameters of the wormhole and the distance to the observer. It is proposed that such features can be important in the direct search of wormholes.

Kirillov, A A

2011-01-01T23:59:59.000Z

319

Electromagnetic interferences from plasmas generated in meteoroids impacts  

E-Print Network (OSTI)

Submitted to Europhysics Letters. It is shown that the plasma, generated during an impact of a meteoroid with an artificial satellite, can produce electromagnetic radiations below the microwave frequency range. These interferences can disturb the regular satellite operations. Pacs 96.50.Kr: Meteors and meteoroids. Pacs 52.50.Lp: Plasma production and heating by shock waves and compression.

Luigi Foschini

1998-01-01T23:59:59.000Z

320

Metallic Mesh Filter Used for Electromagnetic Shielding of Infrared Window  

Science Conference Proceedings (OSTI)

In order to meet anti-electromagnetism interference performance requirements of infrared window, a metallic mesh coating must be used on the infrared window. From the diffraction theory of grating and the equivalent circuit method, simplified expressions ... Keywords: stealth technology, electro-optical countermeasure, transparent conductive coating, metallic mesh filter, infrared window

Jia-Li Song, Xiao-Guo Feng

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Electromagnetic energy flow lines as possible paths of photons  

E-Print Network (OSTI)

Motivated by recent experiments where interference patterns behind a grating are obtained by accumulating single photon events, here we provide an electromagnetic energy flow-line description to explain the emergence of such patterns. We find and discuss an analogy between the equation describing these energy flow lines and the equation of Bohmian trajectories used to describe the motion of massive particles.

M. Davidovic; A. S. Sanz; D. Arsenovic; M. Bozic; S. Miret-Artes

2008-05-21T23:59:59.000Z

322

Electromagnetic interferences from plasmas generated in meteoroids impacts  

E-Print Network (OSTI)

It is shown that the plasma, generated during an impact of a meteoroid with an artificial satellite, can produce electromagnetic radiation below the microwave frequency range. This interference is shown to exceed local noise sources and might disturb regular satellite operations.

Luigi Foschini

1998-04-23T23:59:59.000Z

323

Remote Sensing Ayman F. Habib Electro-Magnetic Radiation  

E-Print Network (OSTI)

Remote Sensing Ayman F. Habib 1 Chapter 2 Electro-Magnetic Radiation #12;Remote Sensing Ayman F. Habib 2 Elements of Remote Sensing #12;Remote Sensing Ayman F. Habib 3 Chapter 2 Radiation: nature & source #12;Remote Sensing Ayman F. Habib 4 Chapter 2 Interaction with the atmosphere #12;Remote Sensing

Habib, Ayman

324

Remote Sensing Ayman F. Habib Electro-Magnetic Radiation  

E-Print Network (OSTI)

Remote Sensing Ayman F. Habib 1 Chapter 2 Electro-Magnetic Radiation Remote Sensing Ayman F. Habib 2 Elements of Remote Sensing #12;Remote Sensing Ayman F. Habib 3 Chapter 2 Radiation: nature & source Remote Sensing Ayman F. Habib 4 Chapter 2 Interaction with the atmosphere #12;Remote Sensing Ayman

Habib, Ayman

325

Monitoring Electromagnetic Pollution: A GIS-Based Visual Approach  

Science Conference Proceedings (OSTI)

In the last years, the attention of the public community on electro-magnetic pollution has continuously grown. In this paper we argue that the use of Geographic Information Systems in this domain should be encouraged as a valid support to the monitoring ...

Luca Paolino; Monica Sebillo; Genoveffa Tortora; Giuliana Vitiello

2001-09-01T23:59:59.000Z

326

Measurement and characterization of substation electromagnetic transients. Final report  

SciTech Connect

Little quantitative data exists on radiated electromagnetic interference in substations arising from substation transients. The electromagnetic transient noise produced by normal substation activity such as opening switches and breakers can be significant. Additionally, abnormal events such as faults cause similar electromagnetic noise. The lack of data is in part because suitable measurement equipment techniques have not been generally available to utilities. A new approach to the measurement and characterization of electromagnetic interference caused by substation transients has been developed. A data acquisition system for measurements has been designed and constructed for field use with a bandwidth capability exceeding 100 MHz. Measurements have been taken from staged operations in substations and the resulting data analyzed using specialized computer programs developed for this project. The measurement techniques are presented and the analysis procedures explained in detail. The transients caused by equipment operations in several substations have been studied resulting in an understanding of the expected or typical amplitudes and frequencies of the resulting noise. Suggestions as to equipment tests and withstand levels have been made. An appendix includes raw and analyzed data for research use.

Russell, B.D.

1983-03-01T23:59:59.000Z

327

The electromagnetic calorimeter for the STAR experiment at RHIC  

SciTech Connect

The STAR detector at RHIC can be used both for searches for quark-gluon plasma and for high energy pp spin physics. An electromagnetic calorimeter is being planned which will be used for triggering on High pt direct gammas, e[sup [plus minus

Underwood, D.G.

1992-01-01T23:59:59.000Z

328

Electromagnetically induced transparency over spectral hole-burning  

E-Print Network (OSTI)

Electromagnetically induced transparency over spectral hole-burning temperature in a rare the spectral hole-burning temperature. The transmission of the probe laser beam is increased by a factor of exp over the spectral hole-burning temperature in a rare-earth­doped solid represents important progress

Shahriar, Selim

329

Mapping clay content variation using electromagnetic induction techniques  

Science Conference Proceedings (OSTI)

Effective management of the soil resource requires basic information about the spatial distribution of various attributes. A method widely used for providing spatial information is a combination of sampling strategies and geostatistics. However, geostatistical ... Keywords: EM34, EM38, Electromagnetic induction, Fuzzy k-means and extragrades classification, Spatial response surface sampling

J. Triantafilis; S. M. Lesch

2005-03-01T23:59:59.000Z

330

2006 NERSC User Survey Results  

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

6 User Survey Results 6 User Survey Results Show All | 1 2 3 4 5 ... 15 | Next » 2006 User Survey Results Table of Contents Survey Results Users are invited to provide overall comments about NERSC: Here are the survey results: Respondent Demographics Overall Satisfaction and Importance All Satisfaction, Importance and Usefulness Ratings All Usefulness Topics Hardware Resources Software Visualization and Data Analysis HPC Consulting Services and Communications Web Interfaces Training Comments about NERSC Survey Results Many thanks to the 256 users who responded to this year's User Survey. This represents a response rate of about 13 percent of the active NERSC users. The respondents represent all six DOE Science Offices and a variety of home institutions: see Respondent Demographics. The survey responses provide feedback about every aspect of NERSC's

331

Electromagnetic dissociation of relativistic {sup 28}Si by nucleon emission  

SciTech Connect

A detailed study of the electromagnetic dissociation of {sup 28}Si by nucleon emission at E{sub lab}/A = 14.6 (GeV/nucleon was carried out with {sup 28}Si beams interacting on {sup 208}Pb). {sup 120}Sn. {sup 64}C targets. The measurements apparatus consists of detectors in the target area which measure the energy and charged multiplicity, and a forward spectrometer which measures the position, momentum and energy of the reaction fragments. The exclusive electromagnetic dissociation cross sections for decay channels having multiple nucleons in the final state have been measured which enables the selection of events produced in pure electromagnetic interactions. The measured cross sections agree well with previous measurements obtained for the removal of a few nucleons as well as with measurements on total charge removal cross sections from other experiments. The dependence of the integrated cross sections on the target charge Z{sub T} and the target mass AT confirms that for higher Z targets the excitation is largely electromagnetic. Direct measurements of the excitation energy for the electromagnetic dissociation of {sup 28}Si {yields} p+{sup 27}Al and {sup 28}Si {yields} n+{sup 27}Si have been obtained through a calculation of the invariant mass in kinematically, reconstructed events. The excitation energy spectrum for all targets peak near the isovector giant dipole resonance in {sup 28}Si. These distributions are well reproduced by combining the photon spectrum calculated using the Weizsaecker-Williams approximation with the experimental data on the photonuclear {sup 28}Si({sub {gamma},p}){sup 27}Al and {sup 28}Si({sub {gamma},n}){sup 27}Si. The possibilities of observing double giant dipole resonance excitations in {sup 28}Si have been investigated with cross section measurements as well as with excitation energy reconstruction.

Sonnadara, U.J.

1992-12-01T23:59:59.000Z

332

Electromagnetic dissociation of relativistic [sup 28]Si by nucleon emission  

SciTech Connect

A detailed study of the electromagnetic dissociation of [sup 28]Si by nucleon emission at E[sub lab]/A = 14.6 (GeV/nucleon was carried out with [sup 28]Si beams interacting on [sup 208]Pb). [sup 120]Sn. [sup 64]C targets. The measurements apparatus consists of detectors in the target area which measure the energy and charged multiplicity, and a forward spectrometer which measures the position, momentum and energy of the reaction fragments. The exclusive electromagnetic dissociation cross sections for decay channels having multiple nucleons in the final state have been measured which enables the selection of events produced in pure electromagnetic interactions. The measured cross sections agree well with previous measurements obtained for the removal of a few nucleons as well as with measurements on total charge removal cross sections from other experiments. The dependence of the integrated cross sections on the target charge Z[sub T] and the target mass AT confirms that for higher Z targets the excitation is largely electromagnetic. Direct measurements of the excitation energy for the electromagnetic dissociation of [sup 28]Si [yields] p+[sup 27]Al and [sup 28]Si [yields] n+[sup 27]Si have been obtained through a calculation of the invariant mass in kinematically, reconstructed events. The excitation energy spectrum for all targets peak near the isovector giant dipole resonance in [sup 28]Si. These distributions are well reproduced by combining the photon spectrum calculated using the Weizsaecker-Williams approximation with the experimental data on the photonuclear [sup 28]Si([sub [gamma],p])[sup 27]Al and [sup 28]Si([sub [gamma],n])[sup 27]Si. The possibilities of observing double giant dipole resonance excitations in [sup 28]Si have been investigated with cross section measurements as well as with excitation energy reconstruction.

Sonnadara, U.J.

1992-12-01T23:59:59.000Z

333

Sloan digital sky survey  

SciTech Connect

The Sloan Digital Sky Survey will produce a detailed digital photometric map of half the northern sky to about 23 magnitude using a special purpose wide field 2.5 meter telescope. From this map we will select {approximately} 10{sup 6} galaxies and 10{sup 5} quasars, and obtain high resolution spectra using the same telescope. The imaging catalog will contain 10{sup 8} galaxies, a similar number of stars, and 10{sup 6} quasar candidates.

Kent, S.M.; Stoughton, C.; Newberg, H.; Loveday, J.; Petravick, D.; Gurbani, V.; Berman, E.; Sergey, G. [Fermi National Accelerator Lab., Batavia, IL (United States); Lupton, R. [Princeton Univ., NJ (United States)

1994-04-01T23:59:59.000Z

334

Magma Source Location Survey  

DOE Green Energy (OSTI)

A survey of Industry/University geophysicists was conducted to obtain their opinions on the existence of shallow (less than 10 km from surface) magma bodies in the western conterminous United States and methods for locating and defining them. Inputs from 35 individuals were received and are included. Responses were that shallow magma bodies exist and that existing geophysical sensing systems are adequate to locate them.

Hardee, H.C.; Dunn, J.C.; Colp, J.L.

1982-03-01T23:59:59.000Z

335

Survey of solar homeowners  

SciTech Connect

Some key results are presented of a national mail survey of 3800 solar homeowners. The solar owners expressed their perceptions about performance, cost, problem areas, and their own motivations and degree of satisfaction. Various types of residential solar installations are represented, including active and passive water heating, space heating, and wind energy systems. After each question put to the respondents, the breakdown of answers is listed and a brief interpretation of the findings is presented. (LEW)

1981-09-01T23:59:59.000Z

336

Electromagnetic Pulse and Intentional Electromagnetic Interference (EMI) Threats to the Power Grid: Characterization of the Threat, Available Countermeasures, and Opportunities for Technology Research  

Science Conference Proceedings (OSTI)

In 2012, the Electric Power Research Institute (EPRI) researched and published a white paper that provided background and an introduction to the topic of electromagnetic attacks of various forms, including electromagnetic pulse (EMP), high altitude EMP (HEMP), and intentional electromagnetic interference (IEMI). That white paper was the first in a series of EPRI papers and reports that address the potential impacts ofand mitigation strategies forvarious types of high-impact, ...

2013-12-22T23:59:59.000Z

337

Property:HydroInfo | Open Energy Information  

Open Energy Info (EERE)

HydroInfo HydroInfo Jump to: navigation, search Property Name HydroInfo Property Type Text Subproperties This property has the following 77 subproperties: 2 2-M Probe Survey A Acoustic Logs Active Seismic Methods Aeromagnetic Survey Analytical Modeling C Caliper Log Cation Geothermometers Cement Bond Log Conceptual Model Core Analysis Core Holes Cuttings Analysis D Data Acquisition-Manipulation Data Techniques Data and Modeling Techniques Drilling Methods E Electric Micro Imager Log Electromagnetic Sounding Methods Elemental Analysis with Fluid Inclusion F FLIR Formation Testing Techniques Frequency-Domain Electromagnetic Survey G Gamma Log Gas Flux Sampling Gas Geothermometry Geochemical Data Analysis G cont. Geochemical Techniques Geodetic Survey Geophysical Methods Geothermal Literature Review

338

Definition: Airborne Gravity Survey | Open Energy Information  

Open Energy Info (EERE)

Survey Jump to: navigation, search Dictionary.png Airborne Gravity Survey Airborne gravity gradiometry (AGG) surveys provide information regarding the mass distribution of the...

339

2010 State Laboratory Program Workload Survey  

Science Conference Proceedings (OSTI)

Page 1. 2010 State Laboratory Program Workload Survey 2010 SLP Survey v.1.00 August 17, 2011 Page 2. SLP Survey 2010 - Page 2 of 122 ...

2011-08-24T23:59:59.000Z

340

2002 Manufacturing Energy Consumption Survey - User Needs Survey  

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

2002 Manufacturing Energy Consumption Survey: User-Needs Survey 2002 Manufacturing Energy Consumption Survey: User-Needs Survey View current results. We need your help in designing the next “ Energy Consumption Survey” (MECS)! As our valued customer, you are in an important position to tell us what kinds of data are most useful in helping you understand energy consumption in the U.S. manufacturing sector. Below is a short electronic survey with just a few questions. We will stop collecting responses for user feedback on May 17, 2002. This deadline serves to meet our intended release date of April/May 2003 for fielding MECS2002. The MECS is designed to produce estimates of energy consumption and other energy-related activities in manufacturing. The survey also collects information on energy expenditures, average prices, onsite generation of

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

ENERGY CONSUMPTION SURVEY  

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

5 RESIDENTIAL TRANSPORTATION 5 RESIDENTIAL TRANSPORTATION ENERGY CONSUMPTION SURVEY Prepared for: UNITED STATES DEPARTMENT OF ENERGY ENERGY INFORMATION ADMINISTRATION OFFICE OF ENERGY MARKETS AND END USE ENERGY END USE DIVISION RESIDENTIAL AND COMMERCIAL BRANCH WASHINGTON, DC 20585 Prepared by: THE ORKAND CORPORATION 8484 GEORGIA AVENUE SILVER SPRING, MD 20910 October 1986 Contract Number DE-AC01-84EI19658 TABLE OF CONTENTS FRONT MATTER Index to Program Descriptions........................................... vi List of Exhibits ....................................................... viii Acronyms and Abbreviations ............................................. ix SECTION 1: GENERAL INFORMATION ........................................ 1-1 1.1. Summary ....................................................... 1-1

342

Laundered protective clothing survey  

SciTech Connect

It is considered appropriate occasionally to make independent checks on the effectiveness of the plant laundry in removing radioactive contamination from plant-issue protective clothing. Previous surveys have offered constructive criticism resulting in improved handling of high level and soft beta contaminated clothing and incorporation in new designs of ventilating and air sampling recommendations. Recurrently the adequacy of laundry reject limits is questioned, and only recently an accurate, special study resulted in relaxed limits for Metal Preparation area clothing. A current question concerns the advisability of determining the reject level on the beta-gamma monitor more frequently than once a day. 2 tabs.

Clukey, H.V.

1952-10-15T23:59:59.000Z

343

A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration  

Open Energy Info (EERE)

GEOTHERMAL ENERGYGeothermal Home GEOTHERMAL ENERGYGeothermal Home Journal Article: A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration Details Activities (0) Areas (0) Regions (0) Abstract: The size and low resistivity of the clay cap associated with a geothermal system create a target well suited for electromagnetic (EM) methods and also make electrical detection of the underlying geothermal reservoir a challenge. Using 3-D numerical models, we evaluate four EM techniques for use in geothermal exploration: magnetotellurics (MT), controlled-source audio magnetotellurics (CSAMT), long-offset time-domain EM (LOTEM), and short-offset time-domain EM (TEM). Our results show that all of these techniques can delineate the clay cap, but none can be said to unequivocally detect the reservoir. We do find, however, that the EM

344

Evidence for new nucleon resonances from electromagnetic meson production  

Science Conference Proceedings (OSTI)

The study of nucleon resonances in electromagnetic meson production with the CLAS detector is discussed. The electromagnetic interaction is complementary to pion scattering in the exploration of the nucleon excitation spectrum. Higher mass states often decouple from the N{pi} channel and are not seen in {pi} N --> {pi} N. Photoproduction of mesons, such as K {Lambda}, {omega} p and {eta}' p may be more sensitive to many of these states. The CLAS detector, combined with the use of energy-tagged polarized photons and polarized electrons, as well as po- larized targets and the measurement of recoil polarization, are the tools needed for a comprehensive nucleon resonance program. Some of the recently published high statistics data sets had significant impact on further clarifying the nucleon excitation spectrum.

Volker Burkert

2012-12-01T23:59:59.000Z

345

On kinetic description of electromagnetic processes in a quantum plasma  

E-Print Network (OSTI)

A nonlinear kinetic equation for nonrelativistic quantum plasma with electromagnetic interaction of particles is obtained in the Hartree's mean-field approximation. It is cast in a convenient form of Vlasov-Boltzmann-type equation with "quantum interference integral", that allows for relatively straightforward modification of existing classical Vlasov codes to incorporate quantum effects (quantum statistics and quantum interference of overlapping particles wave functions), without changing the bulk of the codes. Such modification (upgrade) of existing Vlasov codes may provide a direct and effective path to numerical simulations of nonlinear electrostatic and electromagnetic phenomena in quantum plasmas, especially of processes where kinetic effects are important (e.g., modulational interactions and stimulated scattering phenomena involving plasma modes at short wavelengths or high-order kinetic modes, dynamical screening and interaction of charges in quantum plasma, etc.) Moreover, numerical approaches involv...

Tyshetskiy, Y O; Kompaneets, R

2011-01-01T23:59:59.000Z

346

Geometric and Electromagnetic Aspects of Fusion Pore Making  

E-Print Network (OSTI)

For regulated exocytosis, we model the morphology and dynamics of the making of the fusion pore or porosome as a cup-shaped lipoprotein structure (a dimple or pit) on the cytosol side of the plasma membrane. We describe the forming of the dimple by a free boundary problem. We discuss the various forces acting and analyze the magnetic character of the wandering electromagnetic field wave produced by intracellular spatially distributed pulsating (and well observed) release and binding of calcium ions anteceding the bilayer membrane vesicle fusion of exocytosis. Our approach explains the energy efficiency of the observed dimple forming prior to hemifusion and fusion pore, and the observed flickering in secretion. It provides a frame to relate characteristic time length of exocytosis to the frequency, amplitude and direction of propagation of the underlying electromagnetic field wave.

Darya Apushkinskaya; Evgeny Apushkinsky; Bernhelm Booss-Bavnbek; Martin Koch

2009-12-18T23:59:59.000Z

347

Structures, systems and methods for harvesting energy from electromagnetic radiation  

DOE Patents (OSTI)

Methods, devices and systems for harvesting energy from electromagnetic radiation are provided including harvesting energy from electromagnetic radiation. In one embodiment, a device includes a substrate and one or more resonance elements disposed in or on the substrate. The resonance elements are configured to have a resonant frequency, for example, in at least one of the infrared, near-infrared and visible light spectra. A layer of conductive material may be disposed over a portion of the substrate to form a ground plane. An optical resonance gap or stand-off layer may be formed between the resonance elements and the ground plane. The optical resonance gap extends a distance between the resonance elements and the layer of conductive material approximately one-quarter wavelength of a wavelength of the at least one resonance element's resonant frequency. At least one energy transfer element may be associated with the at least one resonance element.

Novack, Steven D. (Idaho Falls, ID); Kotter, Dale K. (Shelley, ID); Pinhero, Patrick J. (Columbia, MO)

2011-12-06T23:59:59.000Z

348

Energy harvesting devices for harvesting energy from terahertz electromagnetic radiation  

DOE Patents (OSTI)

Methods, devices and systems for harvesting energy from electromagnetic radiation are provided including harvesting energy from electromagnetic radiation. In one embodiment, a device includes a substrate and one or more resonance elements disposed in or on the substrate. The resonance elements are configured to have a resonant frequency, for example, in at least one of the infrared, near-infrared and visible light spectra. A layer of conductive material may be disposed over a portion of the substrate to form a ground plane. An optical resonance gap or stand-off layer may be formed between the resonance elements and the ground plane. The optical resonance gap extends a distance between the resonance elements and the layer of conductive material approximately one-quarter wavelength of a wavelength of the at least one resonance element's resonant frequency. At least one energy transfer element may be associated with the at least one resonance element.

Novack, Steven D.; Kotter, Dale K.; Pinhero, Patrick J.

2012-10-09T23:59:59.000Z

349

Structures, systems and methods for harvesting energy from electromagnetic radiation  

Science Conference Proceedings (OSTI)

Methods, devices and systems for harvesting energy from electromagnetic radiation are provided including harvesting energy from electromagnetic radiation. In one embodiment, a device includes a substrate and one or more resonance elements disposed in or on the substrate. The resonance elements are configured to have a resonant frequency, for example, in at least one of the infrared, near-infrared and visible light spectra. A layer of conductive material may be disposed over a portion of the substrate to form a ground plane. An optical resonance gap or stand-off layer may be formed between the resonance elements and the ground plane. The optical resonance gap extends a distance between the resonance elements and the layer of conductive material approximately one-quarter wavelength of a wavelength of the at least one resonance element's resonant frequency. At least one energy transfer element may be associated with the at least one resonance element.

Novack, Steven D. (Idaho Falls, ID); Kotter, Dale K. (Shelley, ID); Pinhero, Patrick J. (Columbia, MO)

2011-12-06T23:59:59.000Z

350

Coupled Electromagnetic and Thermal Modeling of Microwave Tissue Processing  

E-Print Network (OSTI)

This study deals with 3D finite element modeling of microwave tissue processing using Comsol software 4.0. Maxwells equations are coupled with heat conduction equation to determine electromagnetic field distribution and temperature profile within tissue sample in a reagent inside a domestic microwave oven. The microwave power generation term is calculated. Also, temperature distribution obtained is compared with experimental point measurements recorded in the centre of the tissue using a shielded K type thermocouple. Good agreement is found between numerical and experimental data. The effect of size of both reagent and tissue as well as tissue type on microwave heating patterns within tissue sample is investigated. Studies shows that the reagent volume has greater effect than other factors. The results of the study is considered as a basic foundation for development of coupled electromagnetic thermal models of microwave heating of tissue specimens. The model assists in choosing appropriate process parameters for achieving uniform temperature distribution within tissue specimen.

Osama A Hassan; Ahmed H K; Il Ences; Ahmed M El Bialy

2013-01-01T23:59:59.000Z

351

Electromagnetic and nuclear radiation detector using micromechanical sensors  

DOE Patents (OSTI)

Electromagnetic and nuclear radiation is detected by micromechanical sensors that can be coated with various interactive materials. As the micromechanical sensors absorb radiation, the sensors bend and/or undergo a shift in resonance characteristics. The bending and resonance changes are detected with high sensitivity by any of several detection methods including optical, capacitive, and piezoresistive methods. Wide bands of the electromagnetic spectrum can be imaged with picoJoule sensitivity, and specific absorptive coatings can be used for selective sensitivity in specific wavelength bands. Microcantilevers coated with optical cross-linking polymers are useful as integrating optical radiation dosimeters. Nuclear radiation dosimetry is possible by fabricating cantilevers from materials that are sensitive to various nuclear particles or radiation. Upon exposure to radiation, the cantilever bends due to stress and its resonance frequency shifts due to changes in elastic properties, based on cantilever shape and properties of the coating.

Thundat, Thomas G. (Knoxville, TN); Warmack, Robert J. (Knoxville, TN); Wachter, Eric A. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

352

Electromagnetic Casimir Energies of Semi-Infinite Planes  

E-Print Network (OSTI)

Using recently developed techniques based on scattering theory, we find the electromagnetic Casimir energy for geometries involving semi-infinite planes, a case that is of particular interest in the design of microelectromechanical devices. We obtain both approximate analytic formulae and exact results requiring only modest numerical computation. Using these results, we analyze the effects of edges and orientation on the Casimir energy. We also demonstrate the accuracy, simplicity, and utility of our approximation scheme, which is based on a multiple reflection expansion.

Mohammad F. Maghrebi; Noah Graham

2011-02-08T23:59:59.000Z

353

Experimental studies of electromagnetic properties of few body systems  

DOE Green Energy (OSTI)

An overview is given of some recent and planned experiments which have or will substantially increase our knowledge of the electromagnetic properties of few body systems. Specific examples include the proton and neutron elastic form factors, the deuteron elastic form factors, deuteron threshold electrodisintegration and quasi-elastic scattering, deuteron photodisintegration, and finally measurements of cross sections in deep inelastic scattering from hydrogen, deuterium, and iron. 47 refs., 13 figs. (DWL)

Bosted, P.E.

1987-08-01T23:59:59.000Z

354

Gradient instabilities of electromagnetic waves in Hall thruster plasma  

SciTech Connect

This paper presents a linear analysis of gradient plasma instabilities in Hall thrusters. The study obtains and analyzes the dispersion equation of high-frequency electromagnetic waves based on the two-fluid model of a cold plasma. The regions of parameters corresponding to unstable high frequency modes are determined and the dependence of the increments and intrinsic frequencies on plasma parameters is obtained. The obtained results agree with those of previously published studies.

Tomilin, Dmitry [Department of Electrophysics, Keldysh Research Centre, Moscow 125438 (Russian Federation)

2013-04-15T23:59:59.000Z

355

Medical Devices: Electromagnetic Interference Status and the Role of Standards  

Science Conference Proceedings (OSTI)

This technical update discusses the role of voluntary and regulatory standards in determining the risks of interference from electric and magnetic fields (EMF) with the functioning of implantable and wearable medical devices. The update covers frequencies from the extremely low frequency (ELF) range through the radio-frequency (RF) range. It augments a 2008 EPRI technical update on electromagnetic interference (EMI) with newer types of implanted medical devices (1016815) and previous EPRI publications th...

2009-12-22T23:59:59.000Z

356

Electromagnetic Interference with Implanted Medical Devices: An Update  

Science Conference Proceedings (OSTI)

Electric and magnetic fields (EMF) and contact currents at both power and radio frequencies can interfere with the functioning of implanted medical electronic devices. In both public and occupational environments, electromagnetic interference issues are now exacerbated by the exponential increase in sources of interference over the last decade, an increasing variety of types of susceptible devices, and greater potential for unintended consequences that can be serious. This technical update discusses pote...

2008-09-18T23:59:59.000Z

357

Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)  

E-Print Network (OSTI)

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface.

2008-01-01T23:59:59.000Z

358

Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)  

E-Print Network (OSTI)

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface.

PANDA Collaboration; W. Erni; I. Keshelashvili; B. Krusche; M. Steinacher; Y. Heng; Z. Liu; H. Liu; X. Shen; O. Wang; H. Xu; J. Becker; F. Feldbauer; F. -H. Heinsius; T. Held; H. Koch; B. Kopf; M. Pelizaeus; T. Schroeder; M. Steinke; U. Wiedner; J. Zhong; A. Bianconi; M. Bragadireanu; D. Pantea; A. Tudorache; V. Tudorache; M. De Napoli; F. Giacoppo; G. Raciti; E. Rapisarda; C. Sfienti; E. Bialkowski; A. Budzanowski; B. Czech; M. Kistryn; S. Kliczewski; A. Kozela; P. Kulessa; K. Pysz; W. Schaefer; R. Siudak; A. Szczurek; W. Czy. zycki; M. Domagala; M. Hawryluk; E. Lisowski; F. Lisowski; L. Wojnar; D. Gil; P. Hawranek; B. Kamys; St. Kistryn; K. Korcyl; W. Krzemien; A. Magiera; P. Moskal; Z. Rudy; P. Salabura; J. Smyrski; A. Wronska; M. Al-Turany; I. Augustin; H. Deppe; H. Flemming; J. Gerl; K. Goetzen; R. Hohler; D. Lehmann; B. Lewandowski; J. Luehning; F. Maas; D. Mishra; H. Orth; K. Peters; T. Saito; G. Schepers; C. J. Schmidt; L. Schmitt; C. Schwarz; B. Voss; P. Wieczorek; A. Wilms; K. -T. Brinkmann; H. Freiesleben; R. Jaekel; R. Kliemt; T. Wuerschig; H. -G. Zaunick; V. M. Abazov; G. Alexeev; A. Arefiev; V. I. Astakhov; M. Yu. Barabanov; B. V. Batyunya; Yu. I. Davydov; V. Kh. Dodokhov; A. A. Efremov; A. G. Fedunov; A. A. Feshchenko; A. S. Galoyan; S. Grigoryan; A. Karmokov; E. K. Koshurnikov; V. Ch. Kudaev; V. I. Lobanov; Yu. Yu. Lobanov; A. F. Makarov; L. V. Malinina; V. L. Malyshev; G. A. Mustafaev; A. Olshevski; M. A. . Pasyuk; E. A. Perevalova; A. A. Piskun; T. A. Pocheptsov; G. Pontecorvo; V. K. Rodionov; Yu. N. Rogov; R. A. Salmin; A. G. Samartsev; M. G. Sapozhnikov; A. Shabratova; G. S. Shabratova; A. N. Skachkova; N. B. Skachkov; E. A. Strokovsky; M. K. Suleimanov; R. Sh. Teshev; V. V. Tokmenin; V. V. Uzhinsky; A. S. Vodopianov; S. A. Zaporozhets; N. I. Zhuravlev; A. G. Zorin; D. Branford; K. Foehl; D. Glazier; D. Watts; P. Woods; W. Eyrich; A. Lehmann; A. Teufel; S. Dobbs; Z. Metreveli; K. Seth; B. Tann; A. Tomaradze; D. Bettoni; V. Carassiti; A. Cecchi; P. Dalpiaz; E. Fioravanti; I. Garzia; M. Negrini; M. Savri`e; G. Stancari; B. Dulach; P. Gianotti; C. Guaraldo; V. Lucherini; E. Pace; A. Bersani; M. Macri; M. Marinelli; R. F. Parodi; I. Brodski; W. Doering; P. Drexler; M. Dueren; Z. Gagyi-Palffy; A. Hayrapetyan; M. Kotulla; W. Kuehn; S. Lange; M. Liu; V. Metag; M. Nanova; R. Novotny; C. Salz; J. Schneider; P. Schoenmeier; R. Schubert; S. Spataro; H. Stenzel; C. Strackbein; M. Thiel; U. Thoering; S. Yang; T. Clarkson; E. Cowie; E. Downie; G. Hill; M. Hoek; D. Ireland; R. Kaiser; T. Keri; I. Lehmann; K. Livingston; S. Lumsden; D. MacGregor; B. McKinnon; M. Murray; D. Protopopescu; G. Rosner; B. Seitz; G. Yang; M. Babai; A. K. Biegun; A. Bubak; E. Guliyev; V. S. Jothi; M. Kavatsyuk; H. Loehner; J. Messchendorp; H. Smit; J. C. van der Weele; F. Garcia; D. -O. Riska; M. Buescher; R. Dosdall; R. Dzhygadlo; A. Gillitzer; D. Grunwald; V. Jha; G. Kemmerling; H. Kleines; A. Lehrach; R. Maier; M. Mertens; H. Ohm; D. Prasuhn; T. Randriamalala; J. Ritman; M. Roeder; T. Stockmanns; P. Wintz; P. Wuestner; J. Kisiel; S. Li; Z. Li; Z. Sun; H. Xu; S. Fissum; K. Hansen; L. Isaksson; M. Lundin; B. Schroeder; P. Achenbach; M. C. Mora Espi; J. Pochodzalla; S. Sanchez; A. Sanchez-Lorente; V. I. Dormenev; A. A. Fedorov; M. V. Korzhik; O. V. Missevitch; V. Balanutsa; V. Chernetsky; A. Demekhin; A. Dolgolenko; P. Fedorets; A. Gerasimov; V. Goryachev; A. Boukharov; O. Malyshev; I. Marishev; A. Semenov; C. Hoeppner; B. Ketzer; I. Konorov; A. Mann; S. Neubert; S. Paul; Q. Weitzel; A. Khoukaz; T. Rausmann; A. Taeschner; J. Wessels; R. Varma; E. Baldin; K. Kotov; S. Peleganchuk; Yu. Tikhonov; J. Boucher; T. Hennino; R. Kunne; S. Ong; J. Pouthas; B. Ramstein; P. Rosier; M. Sudol; J. Van de Wiele; T. Zerguerras; K. Dmowski; R. Korzeniewski; D. Przemyslaw; B. Slowinski; G. Boca; A. Braghieri; S. Costanza; A. Fontana; P. Genova; L. Lavezzi; P. Montagna; A. Rotondi; N. I. Belikov; A. M. Davidenko; A. A. Derevschikov; Y. M. Goncharenko; V. N. Grishin; V. A. Kachanov; D. A. Konstantinov; V. A. Kormilitsin; V. I. Kravtsov; Y. A. Matulenko; Y. M. Melnik; A. P. Meschanin; N. G. Minaev; V. V. Mochalov; D. A. Morozov; L. V. Nogach; S. B. Nurushev; A. V. Ryazantsev; P. A. Semenov; L. F. Soloviev; A. V. Uzunian; A. N. Vasiliev; A. E. Yakutin; T. Baeck; B. Cederwall; C. Bargholtz; L. Geren; P. E. Tegner; S. Belostotski; G. Gavrilov; A. Itzotov; A. Kisselev; P. Kravchenko; S. Manaenkov; O. Miklukho; Y. Naryshkin; D. Veretennikov; V. Vikhrov; A. Zhadanov; L. Fava; D. Panzieri; D. Alberto; A. Amoroso; E. Botta; T. Bressani; S. Bufalino; M. P. Bussa; L. Busso; F. De Mori; M. Destefanis; L. Ferrero; A. Grasso; M. Greco; T. Kugathasan; M. Maggiora; S. Marcello; G. Serbanut; S. Sosio; R. Bertini; D. Calvo; S. Coli; P. De Remigis; A. Feliciello; A. Filippi; G. Giraudo; G. Mazza; A. Rivetti

2008-10-07T23:59:59.000Z

359

Assessment of Electromagnetic Interference Events in Nuclear Power Plants  

Science Conference Proceedings (OSTI)

This report presents a study and analysis of reported electromagnetic interference (EMI-) related incidents in nuclear power plants. These incidents were gathered primarily from the total body of incidents reported to the Institute of Nuclear Power Operations (INPO) database, with a few incidents coming from U.S. Nuclear Regulatory Commission (NRC) reports. This report analyzes trends and common factors in these events. The analysis is intended to inform the estimation of risk from EMI and offer suggesti...

2011-12-23T23:59:59.000Z

360

Device for conversion of electromagnetic radiation into electrical current  

DOE Patents (OSTI)

Electromagnetic energy may be converted directly into electrical energy by a device comprising a sandwich of at least two semiconductor portions, each portion having a p-n junction with a characteristic energy gap, and the portions lattice matched to one another by an intervening superlattice structure. This superlattice acts to block propagation into the next deposited portion of those dislocation defects which can form due to lattice mismatch between adjacent portions.

Blakeslee, A.E.; Mitchell, K.W.

1980-03-25T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Device for conversion of electromagnetic radiation into electrical current  

DOE Patents (OSTI)

Electromagnetic energy may be converted directly into electrical energy by a device comprising a sandwich of at least two semiconductor portions, each portion having a p-n junction with a characteristic energy gap, and the portions lattice matched to one another by an intervening superlattice structure. This superlattice acts to block propagation into the next deposited portion of those dislocation defects which can form due to lattice mismatch between adjacent portions.

Blakeslee, A. Eugene (Golden, CO); Mitchell, Kim W. (Indian Hill, CO)

1981-01-01T23:59:59.000Z

362

CRC handbook of biological effects of electromagnetic fields  

Science Conference Proceedings (OSTI)

This book presents the current knowledge about the effects of electromagnetic fields on living matter. The three-part format covers dielectric permittivity and electrical conductivity of biological materials; effects of direct current and low frequency fields; and effects of radio frequency (including microwave) fields. The parts are designed to be consulted independently or in sequence, depending upon the needs of the reader. Useful appendixes on measurement units and safety standards are also included.

Polk, C.; Postow, E.

1986-01-01T23:59:59.000Z

363

CRC handbook of biological effects of electromagnetic fields  

Science Conference Proceedings (OSTI)

This book presents current knowledge about the effects of electromagnetic fields on living matter. The three-part format covers: dielectric permittivity and electrical conductivity of biological materials; effects of direct current and low frequency fields; and effects of radio frequency (including microwave) fields. The parts are designed to be consulted independently or in sequence, depending upon the needs of the reader. Useful appendixes on measurement units and safety standards are also included.

Polk, C. (Rhode Island Univ., Kingston, RI (United States). Dept. of Electrical Engineering); Postow, E. (National Naval Medical Center, Bethesda, MD (United States))

1986-01-01T23:59:59.000Z

364

Correlated Quantum Memory: Manipulating Atomic Entanglement via Electromagnetically Induced Transparency  

E-Print Network (OSTI)

We propose a feasible scheme of quantum state storage and manipulation via electromagnetically induced transparency (EIT) in flexibly $united$ multi-ensembles of three-level atoms. For different atomic array configurations, one can properly steer the signal and the control lights to generate different forms of atomic entanglement within the framework of linear optics. These results shed new light on designing the versatile quantum memory devices by using, e.g., an atomic grid.

H. Jing; X. -J. Liu; M. -L. Ge; M. -S. Zhan

2004-10-05T23:59:59.000Z

365

NEPA COMPLIANCE SURVEY  

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

NEPA COMPLIANCE SURVEY NEPA COMPLIANCE SURVEY # 350 8 Revised 8/2/10 mjt Attachment 1 Written by Dan Smallwood Production Enhancement Project-5 T-2-34 to T-1-33 MIT all wells in this area to determine which are producing wells. There are 15 wells shut in this area because of no tank or shipping line. According to the old test sheet these wells make 24bbls oil and 120bbls of water. Two of these wells have leaks in the flow lines that will be fixed. One is 33-S-34 which could be run to 34-AX-34, about 400' .6 bbl/pd and the other is 35 shx 34 which could be run to 35-AX-34 which is about 200'.5bbl/pd. 42-AX-34 could be ran to 32-AX-34 and then to 33-SX-34 to 34-AX-34. There are two manifolds at T-2-34, one with 10 wells and the other with 12. None of the flow lines have valves or checks in the lines. I propose we flush, disconnect, and plug all wells that

366

NEPA COMPLIANCE SURVEY  

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

4 4 Project Information Project Title: Survey Centralizer Design Date: 2-10-2010 DOE Code: 6730.020.71091 Contractor Code: 8067-762 Project Lead: Frank Ingham Project Overview 1. What are the environmental No environmental impacts. impacts? Run a logging tool through existing wells at : 2. What is the /ega/location? 67-LBT-3, SW SE sec 3, T38N , R78W 86-1 -X-10 , NE SE Sec 10, T38N , R78W 3. What is the duration of the project? 22-2-X-10H , NW NW Sec 10, T38N , R78W 4. What major equipment will be used if any (work over rig , drilling rig, 4 Days etc.)? Stinger truck or crane . The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

367

2005 NERSC User Survey Results  

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

5 User Survey Results 5 User Survey Results Show All | 1 2 3 4 5 ... 10 | Next » 2005 User Survey Results Table of Contents Response Summary Respondent Demographics All Satisfaction, Importance and Usefulness Ratings Hardware Resources Software Visualization and Data Analysis Services and Communications Web Interfaces Training Comments about NERSC Response Summary Many thanks to the 201 users who responded to this year's User Survey. The respondents represent all six DOE Science Offices and a variety of home institutions: see Respondent Demographics. The survey responses provide feedback about every aspect of NERSC's operation, help us judge the quality of our services, give DOE information on how well NERSC is doing, and point us to areas we can improve. The survey results are listed below.

368

2000 NERSC User Survey Results  

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

0 User Survey Results 0 User Survey Results Show All | 1 2 3 4 5 ... 10 | Next » 2000 User Survey Results Table of Contents Response Summary User Information Overall Satisfaction and Importance All Satisfaction Questions and FY 1999 to FY 2000 Changes Consulting and Account Support Web and Communications Hardware Resources Software Resources Training User Comments Response Summary NERSC extends its thanks to all the users who participated in this year's survey. Your responses provide feedback about every aspect of NERSC's operation, help us judge the quality of our services, give DOE information on how well NERSC is doing, and point us to areas we can improve. Every year we institute changes based on the survey; the FY 1999 survey resulted in the following changes: We created a long-running queue (12 hours maximum) for jobs using up

369

2002 NERSC User Survey Results  

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

2 User Survey Results 2 User Survey Results Show All | 1 2 3 4 5 ... 11 | Next » 2002 User Survey Results Table of Contents Response Summary User Information Overall Satisfaction and Importance All Satisfaction Questions and Changes from Previous Years Visualization and Grid Computing Web, NIM, and Communications Hardware Resources Software Training User Services Comments about NERSC Response Summary Many thanks to the 300 users who responded to this year's User Survey -- this represents the highest response level in the five years we have conducted the survey. The respondents represent all five DOE Science Offices and a variety of home institutions: see User Information. You can see the FY 2002 User Survey text, in which users rated us on a 7-point satisfaction scale. Some areas were also rated on a 3-point

370

RESIDENTIAL ENERGY CONSUMPTION SURVEY 1997  

U.S. Energy Information Administration (EIA)

RESIDENTIAL ENERGY CONSUMPTION SURVEY 1997. OVERVIEW: MOST POPULOUS STATES ... Homes with air-conditioning: 95%... with a central air-conditioning system: 83%

371

2001 Residential Energy Consumption Survey  

U.S. Energy Information Administration (EIA)

Residential Energy Consumption Survey ... Office of Management and Budget, Washington, DC 20503. Form EIA-457A (2001) Form Approval: OMB No. 1905-0092 ...

372

NEPA COMPLIANCE SURVEY  

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

6 6 Project lnfonnation Project Title: C-EAG. Maintenance I grading of existing roads Date: 8/4/2011 and road drainages (barrow ditches): ex 81.3 DOE Code: Contractor Code: Project Lead: Michael J. Taylor [NCO] Project Overview 1. Brief project description [include C-EA 6. Maintenance I grading of existing roads and road drai nages anything that could impact the (barrow ditches) : ex 81.3 environment] Existing roads defined as per May 2010 Aerial Photos. (Changing out culverts, grading I modifying embankments, etc., that has potential to impact wetlands, requires a NCS.) The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

373

NEPA COMPLIANCE SURVEY  

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

8 8 Project lnfonnation Project Title: Change out down guy on power pole Date: 2-8-10 DOE Code : Contractor Code: Project Lead: Mike Preston Project Overview 1 What are the environmental No impact to the environment impacts? Power pole east of B-1 -33 2. What is the legal location? 3. What is the duration of the project? 3Hr 4. What major equipment will be used if any (worl< over rig, drilling rig, Backhoe and operator for equ1 pment etc.)? The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE; If ChiingSurvey alld contact Ut TlrCh.,lcal Assunlnce DepartmenL Impacts If YES, then complete below

374

Fermilab Prairie Plant Survey  

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

Crack the Quadrat* Code! Crack the Quadrat* Code! compass plasnt * What is a Quadrat? It's a one-meter square plot. Plants in the quadrat are identified and counted. Fermilab quadrat specialists can! Attention Citizen Scientists Are you a prairie enthusiast? Learn scientific plant monitoring techniques while enjoying our beautiful prairie. Join a unique science program open to the public, adult groups, families, scouts and more …. Become a prairie quadrat specialist and do real science at Fermilab! In the Fermilab Prairie Plant Survey you will learn how to identify prairie plants, map a prairie plot and track restoration progress along with our experts. Use our Website to contribute data you collect. Come once or come back two or three times to see how the prairie changes. Keep an eye on this prairie for years to come!

375

NEPA COMPLIANCE SURVEY  

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

8 8 Project lnfonnation Project Title: New Drilling Location in Section 29 Date: 12-10-2009 DOE Code: 6730.020.78002 Contractor Code: 8067-371 Project Lead: Mark Duletsky Project Overview The project will involve excavating 3-4 backhoe pits to a depth of about 8 feet to observe soil characteristics 1. What are the environmental impacts? in the vicinity of our planned reserve pit excavation area. 2. What is the legal location? NE 1/4, SE 1/4, Sec. 29. T39N. R78W. Natrona County, Wyoming 3. What is the duration of the project? 4. What major equipment will be used 1 day if any (work over rig, drilling rig, etc.)? Backhoe The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

376

NEPA COMPLIANCE SURVEY  

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

1 1 Project l nfonnation Project Title: Reclamation ofT-2-14 Date: 11/2412009 DOE Code: Contractor Code: Project Lead: Jeff Jones Project Overview We will be removing old piping from the treater@ T-2-14. We will also remove the berm and grade and 1. What are the environmental impacts? reclamate location. The duration of this project will be approx. 2 days. Equipment that will be used is as follows backhoe. dumptruck, blade,and a tiller so we can seed with native grasses. 2. What is the legal location? 3. What is the duration of the project? 4. What major equipment will be used if any (woO< over rig, drilling rig, etc.)? The table below Is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

377

NEPA COMPLIANCE SURVEY  

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

0 0 Project lnfonnation Project Title: Replace electrical line from well to power pole Date: 3/10/2010 DOE Code: Contractor Code: Project Lead: Mike Preston Project Overview No impact to the environment. 1. What are the environmental impacts? Dig up old electrical line from pumping unit on 61-S-34 to power pole east of well , {approximately 75 feet 2. What is the legal location? from unit) and replace with new line. 3. What is the duration of the project? 4. What major equipment will be used 1 day if any (work over rig , drilling rig , etc.)? Electrician, ditch witch and operator for equipment The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

378

SURVEY OF FALLOUT OPERATIONS  

SciTech Connect

A survey was made of fall-out operations in the various countries of the world, These operations are outlined by country. The source of information has largely been the reports submitted to UNSCEAR forwarding data for their consideration. In addition, some material has been received directly in exchange for HASL Quarterlies and other publications of the Laboratory. In many cases, responsible scientists from the country concerned have reviewed the sheets and have made corrections. All of the programs that are shown have been and are subject to modification as time goes on, thus, the data indicate the status of the program as of 1961. No attempt has been made to list re search projects or special fall-out measurements and only programs of a continuing nature have been covered. (auth)

1962-07-01T23:59:59.000Z

379

NEPA COMPLIANCE SURVEY  

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

2 2 Project lnfonnation Project Title: Restoration of 77 -13-SX-3 Date: 2-8-1 0 DOE Code: Contractor Code: Project Lead: Jeff Jones Project Overview We will be restoring 77-SX-3 per procedure. 1. What are the environmental impacts? The duration of this project will be 3-4 days. 2. What is the leg al location? 3. What is the duration of the project? The equipment to be used will be Backhoe, welder, tiller dump truck. 4. What major equipment will be used if any (work over rig , drilling rig , We will take oil contaminated dirt to the Eastside landfarm and backfill with d ean fill dirt from sec. 20. etc.)? The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

380

NEPA COMPLIANCE SURVEY  

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

4 4 Project lnfonnation Project Title: e-EA5. Reclamation of well sites Date: 8/4/2011 DOE Code: Contractor Code: Project Lead: Michael J. Taylor [NCO] Project Overview e-EA 5. Reclamation of wellsites : ex 81.3 and ex 86.1 1. Brief project description [include anything that could impact the Small-scale, short-term cleanup actions including excavation and environment] consolidation of contaminated soils, removal of underground piping, removal of rig anchors or T-bars, drainage control , transport and backfilling of clean soil I fill dirt, and reseeding . The table below is to be completed by the Project Lead and reviewed by the Environmental Specialist and the DOE NEPA Compliance Officer. NOTE: If Change of Scope occurs, Project Lead must submit a new NEPA Compliance Survey and

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


381

DEVELOPMENT OF A FAST-RELEASE ELECTRO-MAGNET FOR POOL-TYPE RESEARCH REACTORS  

SciTech Connect

Experimental data and observations of the design parameters and physical configurations which lead to faster-release cylindrical flat-faced electromagnets are given. Detailed drawings and operating characteristics are presented for an electromagnet suited to the requirements of a pool-type research reactor using either gravity drop or additional accelerating force. This electromagnet embodies the experimentally developed techniques for attaining fast release. (auth)

Michelson, C.

1958-02-14T23:59:59.000Z

382

Radiological Habits Survey: Bradwell, 2007  

E-Print Network (OSTI)

.2 Comparisons with previous surveys 55 Table A Comparison between 1999 and 2007 aquatic internal exposure 56 3. METHODS FOR DATA ANALYSIS 19 3.1 Data recording 19 3.2 Data analysis 21 4. AQUATIC RADIATION RADIATION PATHWAYS 41 5.1 Terrestrial survey area 41 5.2 Unusual pathways 42 5.3 Retailers 43 5.4 Food

383

Radiological Habits Survey: Wylfa, 2004  

E-Print Network (OSTI)

.7 Internal exposure 28 4.8 External exposure 31 4.9 Water based activities 33 5. TERRESTRIAL RADIATION PATHWAYS 34 5.1 Terrestrial survey area 34 5.2 Wholesalers and retailers 36 5.3 Internal exposure 36 6 analysis 21 4. AQUATIC RADIATION PATHWAYS 23 4.1 Aquatic survey area 23 4.2 Commercial fisheries 25 4

384

Radiological Habits Survey: Winfrith, 2003  

E-Print Network (OSTI)

.7 Internal exposure 26 4.8 External exposure 30 4.9 Water based activities 31 5 TERRESTRIAL RADIATION exposure 37 6 DIRECT RADIATION PATHWAYS 40 6.1 Direct radiation survey area 40 6.2 Residential activities analysis 19 4 AQUATIC RADIATION PATHWAYS 21 4.1 Aquatic survey area 21 4.2 Commercial fisheries 23 4

385

Multidimensional Pattern Matching: A Survey  

E-Print Network (OSTI)

for this survey is the problem of searching aerial photographs. The (ambitious) practical goal of this applicationMultidimensional Pattern Matching: A Survey Amihood Amir \\Lambda GIT--CC--92/29 July 1992 Abstract is that of searching an aerial photograph for all ap­ pearances of some object. The issues we discuss are local errors

Amir, Amihood

386

Three dimensional interpretations of single-well electromagnetic data for geothermal applications  

E-Print Network (OSTI)

Energy, Office of Wind and Geothermal Technologies of theTwenty-Ninth Workshop on Geothermal Reservoir EngineeringELECTROMAGNETIC DATA FOR GEOTHERMAL APPLICATIONS Hung-Wen

Tseng, Hung-Wen; Lee, Ki Ha

2004-01-01T23:59:59.000Z

387

Comment on Pion-nucleon bremsstrahlung and. Delta. electromagnetic moments''  

SciTech Connect

We analyze the definition of the electromagnetic moments of the dressed'' {Delta} introduced by Heller, Kumano, Martinez, and Moniz with respect to gauge invariance.

Weyrauch, M. (Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, South Australia 5001 (AU))

1989-11-01T23:59:59.000Z

388

Effect of Electromagnetic Stirring on the Structure of Cast Al-4.5%Cu ...  

Science Conference Proceedings (OSTI)

Numerical Modeling of Centrifugally Cast HSS Rolls Numerical Simulation of Electro-magnetic Turbulent Inhibitor Technology in a Tundish Optimizing the...

389

Dyadic Green Function for an Electromagnetic Medium Inspired by General Relativity  

E-Print Network (OSTI)

The dyadic Green function for a homogeneous electromagnetic medium inspired by the spatiotemporally nonhomogeneous constitutive equations of gravitationally affected vacuum is derived.

Akhlesh Lakhtakia; Tom G. Mackay

2005-11-08T23:59:59.000Z

390

Experimental and Analytical Characterization of a Transducer for Energy Harvesting Through Electromagnetic Induction.  

E-Print Network (OSTI)

??Advances in mechatronics have renewed interest in the harvesting and storage of ambient vibration energy. This work documents recent efforts to model a novel electromagnetic (more)

Domme, Daniel Joseph

2008-01-01T23:59:59.000Z

391

Full-wave algorithms for model order reduction and electromagnet analysis of impedance and scattering  

E-Print Network (OSTI)

As technology advances and sophisticated electronic systems achieve ubiquity, the demand for thorough, efficient Electromagnetic (EM) analysis continues to rise. The prohibitive costs of constructing and maintaining ...

Klemas, Thomas J. (Thomas Jonas)

2005-01-01T23:59:59.000Z

392

On inverse scattering at high energies for the multidimensional Newton equation in electromagnetic field  

E-Print Network (OSTI)

We consider the multidimensional (nonrelativistic) Newton equation in a static electromagnetic field $$\\ddot x = F(x,\\dot x), F(x,\\dot x)=-\

Alexandre Jollivet

2007-09-29T23:59:59.000Z

393

1999 NERSC User Survey Results  

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

9 User Survey Results 9 User Survey Results Show All | 1 2 3 4 5 ... 11 | Next » 1999 User Survey Results Table of Contents Respondent Summary Overall Satisfaction User Information Visualization Consulting and Account Support Information Technology and Communication Hardware Resources Software Training Comments about NERSC All Satisfaction Questions and FY 1998 to FY 1999 Changes Respondent Summary NERSC would like to thank all the users who participated in this year's survey. Your responses provide feedback about every aspect of NERSC's operation, help us judge the quality of our services, give DOE information on how well NERSC is doing, point us to areas we can improve, and show how we compare to similar facilities. This year 177 users responded to our survey, compared with 138 last year.

394

BOREAS Survey On-Line  

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

FF33"> FF33"> BOREAS Survey On-Line To improve the BOREAS and BOREAS Follow-On data sets and to meet users' needs, we are conducting a survey. The BOREAS and BOREAS Follow-On data sets continue to be important products at the ORNL DAAC. To date we have provided over 8,000 data products from these projects to nearly 1,500 users. We invite you to fill out this survey, identifying any problems you had with the data and documentation or any difficulties you experienced in finding and acquiring the data sets. Information you provide will enable us to address problems that need attention. It will also help us determine which aspects of the BOREAS and BOREAS Follow-On information need to be expanded. You can complete the survey at the BOREAS Home Page. After you complete the on-line survey, submit your answers to the ORNL

395

2004 NERSC User Survey Results  

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

4 User Survey Results 4 User Survey Results Show All | 1 2 3 4 5 ... 13 | Next » 2004 User Survey Results Table of Contents Response Summary Respondent Demographics Overall Satisfaction and Importance All Satisfaction, Importance and Usefulness Ratings Hardware Resources Software Security and One Time Passwords Visualization and Data Analysis HPC Consulting Services and Communications Web Interfaces Training Comments about NERSC Response Summary Many thanks to the 209 users who responded to this year's User Survey. The respondents represent all six DOE Science Offices and a variety of home institutions: see Respondent Demographics. The survey responses provide feedback about every aspect of NERSC's operation, help us judge the quality of our services, give DOE information on how well NERSC is doing, and point us to areas we can improve. The

396

Residential Energy Consumption Survey:  

Gasoline and Diesel Fuel Update (EIA)

E/EIA-0262/2 E/EIA-0262/2 Residential Energy Consumption Survey: 1978-1980 Consumption and Expenditures Part II: Regional Data May 1981 U.S. Department of Energy Energy Information Administration Assistant Administrator for Program Development Office of the Consumption Data System Residential and Commercial Data Systems Division -T8-aa * N uojssaooy 'SOS^-m (£03) ao£ 5925 'uofSfAfQ s^onpojj aa^ndmoo - aojAaag T BU T3gN am rcoj? aig^IT^^ '(adBx Q-naugBH) TOO/T8-JQ/30Q 30^703 OQ ' d jo :moaj ajqBfT^A^ 3J^ sjaodaa aAoqe aqa jo 's-TZTOO-eoo-Tgo 'ON ^ois odo 'g^zo-via/aoQ 'TBST Sujpjjng rXaAang uojidmnsuoo XSaaug sSu-ppjprig ON ^oo^s OdO '^/ZOZO-Via/aOQ *086T aunr '6L6I ?sn§ny og aunf ' jo suja^Bd uoj^dmnsuoo :XaAjng uo^^dmnsuoQ XSaaug OS '9$ '6-ieTOO- 00-T90 OdD 'S/ZOZO-Via/aOa C

397

NEPA COMPLIANCE SURVEY  

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

. NEPA COMPLIANCE SURVEY Project lnfonnation Project Title: Reclamation of Pits and Boxes Date: Nov. 3, 2010 DOE Code: 6740.010.00000 Contractor Code: 8067-451 Project Lead: Anthony Bowler Project Overview Reclamation of QD.]y the following Pits and Boxes : 1. Brief project description [include 1. B-2-1 0 Skim Box anything that could impact the 2. B-1-14 Skim Box environment 3. Near66-1-STX-14 Pit 2. Legal location 4. T-5-10 Skim Box 3. Duration of the project 5. WDFUpperPit 6. WDFLowerPit 4. Major equipment to be used 7. WDFSkimBox 8. B-1-3 Pit 9. B-1 -3 Skim Box 10. T-2-34 Pit 11 . B-1-10 Pit 12. B-1 -10 Skim Box 13. SE of SG3 & Welding Shop Skim Box 14. 58.Q4-1-SX-3 Skim Box 15. Near Tank 126 Skim Box 16. 77-1-SX-3 NW of Well Pit 17. T-5-3 Pit

398

Modified definition of group velocity and electromagnetic energy conservation equation  

E-Print Network (OSTI)

The classical definition of group velocity has two flaws: (a) the group velocity can be greater than the phase velocity in a non-dispersive medium; (b) the definition is not consistent with the principle of relativity. To remove the flaws, a modified definition is proposed. A criterion is set up to identify the justification of group velocity definition. A "superluminal power flow" is constructed to show that the electromagnetic energy conservation equation cannot uniquely define the power flow if the principle of Fermat is not taken into account.

Changbiao Wang

2013-06-13T23:59:59.000Z

399

Surface moisture measurement system electromagnetic induction probe calibration technique  

SciTech Connect

The Surface Moisture Measurement System (SMMS) is designed to measure the moisture concentration near the surfaces of the wastes located in the Hanford Site tank farms. This document describes a calibration methodology to demonstrate that the Electromagnetic Induction (EMI) moisture probe meets relevant requirements in the `Design Requirements Document (DRD) for the Surface Moisture Measurement System.` The primary purpose of the experimental tests described in this methodology is to make possible interpretation of EMI in-tank surface probe data to estimate the surface moisture.

Crowe, R.D., Westinghouse Hanford

1996-07-08T23:59:59.000Z

400

Unusual formations of the free electromagnetic field in vacuum  

E-Print Network (OSTI)

It is shown that there are exact solutions of the free Maxwell equations (FME) in vacuum allowing an existence of stable spherical formations of the free magnetic field and ring-like formations of the free electric field. It is detected that a form of these spheres and rings does not change with time in vacuum. It is shown that these convergent solutions are the result of an interference of some divergent solutions of FME. One can surmise that these electromagnetic formations correspond to Kapitsa's hypothesis about interference origin and a structure of fireball.

Andrew E. Chubykalo; Augusto Espinoza

2005-03-25T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Interference effects in the reradiation of ultrashort electromagnetic pulses  

E-Print Network (OSTI)

Reradiation of a spatially non-uniform ultrashort electromagnetic pulse interacting with the linear chain of multielectron atoms is studied in the framework of sudden perturbation approximation. Angular distributions of the reradiation spectrum for arbitrary number of atoms are obtained. It is shown that interference effects for the photon radiation amplitudes lead to appearing of "diffraction" maximums. The obtained results can be extended to the case of two- and three-dimensional crystal lattices and atomic chains. The approach developed allows also to take into account thermal vibrations of the lattice atoms.

Matveev, V I

2012-01-01T23:59:59.000Z

402

Customer Electromagnetic Compatibility: A Study on Interference Issues  

Science Conference Proceedings (OSTI)

Electromagnetic compatibility (EMC) has been a problem since before the invention of radio. The proliferation of ever-more sensitive electronic devices has made EMC and RFI into quite pervasive problems. When confronted with an interference problem, it is easy and tempting to automatically blame the electric power company or the radio amateur next door, but in fact the source may be right in the interference recipient's own home. Or, because of the long-distance propagation of radio waves, it may turn ou...

2004-12-20T23:59:59.000Z

403

Interference effects in the reradiation of ultrashort electromagnetic pulses  

E-Print Network (OSTI)

Reradiation of a spatially non-uniform ultrashort electromagnetic pulse interacting with the linear chain of multielectron atoms is studied in the framework of sudden perturbation approximation. Angular distributions of the reradiation spectrum for arbitrary number of atoms are obtained. It is shown that interference effects for the photon radiation amplitudes lead to appearing of "diffraction" maximums. The obtained results can be extended to the case of two- and three-dimensional crystal lattices and atomic chains. The approach developed allows also to take into account thermal vibrations of the lattice atoms.

V. I. Matveev; D. U. Matrasulov

2012-05-20T23:59:59.000Z

404

Electromagnetic wave method for mapping subterranean earth formations  

SciTech Connect

The present invention is directed to a method for remotely mapping subterranean coal beds prior to and during in situ gasification operations. This method is achieved by emplacing highly directional electromagnetic wave transmitters and receivers in bore holes penetrating the coal beds and then mapping the anomalies surrounding each bore hole by selectively rotating and vertically displacing the directional transmitter in a transmitting mode within the bore hole, and thereafter, initiating the gasification of the coal at bore holes separate from those containing the transmitters and receivers and then utilizing the latter for monitoring the burn front as it progresses toward the transmitters and receivers.

Shuck, Lowell Z. (Morgantown, WV); Fasching, George E. (Morgantown, WV); Balanis, Constantine A. (Morgantown, WV)

1977-01-01T23:59:59.000Z

405

Super-light electromagnetic wave with longitudinal and transversal modes  

E-Print Network (OSTI)

The transformation converting equations invariant under Lorentz into the equations invariant under Galileo is obtained. On this basis: (1) the super-light electromagnetic wave with longitudinal and transversal modes is found out; (2) it is shown the wave velocity coincides with that of de Broglie's wave; (3) the connection between Maxwell's electrodynamics and Shredinger's equation is established; (4) structural elements of space are discovered and "a horizon of visibility" is found. It is shown Bell's inequalities and the principle of the light speed constancy are based on the SRT artifact and "Einstein's local realism" is determined by the wave referred above. Objectivity of results for quantum and classical objects is discussed

M. M. Kononenko

2007-08-20T23:59:59.000Z

406

Low-Frequency Electromagnetic Backscatter from Buried Tunnels  

Science Conference Proceedings (OSTI)

This progress report is submitted under a contract between the Special Project Office of DARPA and Lawrence Livermore National Laboratory. The Project Manager at DARPA is Dr. Michael Zatman. Our purpose under this contract is to investigate interactions between electromagnetic waves and a class of buried targets located in multilayered media with rough interfaces. In this report, we investigate three preliminary problems. In each case our specific goal is to understand various aspects of the electromagnetic wave interaction mechanisms with targets in layered media. The first problem, discussed in Section 2, is that of low-frequency electromagnetic backscattering from a tunnel that is cut into a lossy dielectric half-space. In this problem, the interface between the upper (free space) region and the lower (ground) region is smooth. The tunnel is assumed to be a cylindrical free-space region of infinite extent in its axial direction and with a diameter that is small in comparison to the free-space wavelength. Because its diameter is small, the tunnel can be modeled as a buried ''wire'' described by an equivalent impedance per unit length. In Section 3 we extend the analysis to include a statistically rough interface between the air and ground regions. The interface is modeled as a random-phase screen. Such a screen reduces the coherent power in a plane wave that is transmitted through it, scattering some of the total power into an incoherent field. Our analysis of this second problem quantifies the reduction in the coherent power backscattered from the buried tunnel that is caused by the roughness of the air-ground interface. The problem of low-frequency electromagnetic backscattering from two buried tunnels, parallel to each other but at different locations in the ground, is considered in Section 4. In this analysis, we wish to determine the conditions under which the presence of more than one tunnel can be detected via backscattering. Section 5 concludes the report with a summary of the investigations discussed herein and recommendations for future work on problems of this class.

Casey, K; Pao, H

2006-06-21T23:59:59.000Z

407

Detection of electromagnetic radiation using micromechanical multiple quantum wells structures  

DOE Patents (OSTI)

An apparatus and method for detecting electromagnetic radiation employs a deflectable micromechanical apparatus incorporating multiple quantum wells structures. When photons strike the quantum-well structure, physical stresses are created within the sensor, similar to a "bimetallic effect." The stresses cause the sensor to bend. The extent of deflection of the sensor can be measured through any of a variety of conventional means to provide a measurement of the photons striking the sensor. A large number of such sensors can be arranged in a two-dimensional array to provide imaging capability.

Datskos, Panagiotis G [Knoxville, TN; Rajic, Slobodan [Knoxville, TN; Datskou, Irene [Knoxville, TN

2007-07-17T23:59:59.000Z

408

Electromagnetic Interference and the Pacemaker Patient T1-Electromagnetic Interference and the Pacemaker Patient 10/03/03  

E-Print Network (OSTI)

While clinically significant problems with electromagnetic interference (EMI) are rare, a pacemakers response to EMI becomes more diverse as technology advances. Pacemaker manufacturers continue to develop interference protection circuitry to keep up with these vast sources of EMI. The pacemakers response to EMI is dependent on the characteristics of the EMI, proximity to the interference, available shielding, and the sensing characteristics and polarity of the pacemaker. The pacemaker circuitry is designed to attenuate any interference outside the normal intracardiac range (10 Hz 100 Hz). This is achieved by using bandpass filters. EMI sources can be broadly classified as galvanic, electromagnetic or magnetic. Galvanic interference requires direct contact with electrical current. This is most often seen in defibrillation/cardioversion, cautery, TENS units and diathermy. Electromagnetic or electrically coupled interference does not require direct body contact. This interference is most often seen with arc welders, ham radios, electrical appliances, metal detectors, therapeutic ultrasound and high voltage power lines. Magnetic interference occurs when a patient comes in close proximity with an intense magnetic field. This is often seen in nuclear magnetic resonance imaging (NMR/MRI) and steel mill induction furnaces. EMI with signal modulation can mimic normal intracardiac signals. When detected, the response to EMI may present itself as a single beat inhibition, total inhibition, noise reversion/asynchronous pacing, rate increase, erratic pacing, or no output. These responses are usually temporary, but can be permanent if the pulse generator circuitry is damaged. A pacemakers response to EMI is highly dependent on the specific EMI source, the pacemakers mode, and sensing polarity. Included is a list that details the interaction of commonly encountered pacemaker EMI sources. Accompanying this list is a summary table of these sources and reported associated pacemaker responses.

Rev A

1998-01-01T23:59:59.000Z

409

Building Energy Codes Survey Tool  

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

Codes Program Codes Program Building Energy Codes Survey Tool The following surveys are available: No available surveys Please contact ( webmaster@energycode.pnl.gov ) for further assistance. English Albanian Arabic Basque Belarusian Bosnian Bulgarian Catalan Chinese (Simplified) Chinese (Traditional; Hong Kong) Chinese (Traditional; Taiwan) Croatian Czech Danish Dutch Dutch Informal English Estonian Finnish French Galician German German informal Greek Hebrew Hindi Hungarian Icelandic Indonesian Irish Italian Italian (formal) Japanese Korean Latvian Lithuanian Macedonian Malay Maltese Norwegian (Bokmal) Norwegian (Nynorsk) Persian Polish Portuguese Portuguese (Brazilian) Punjabi Romanian Russian Serbian Sinhala Slovak Slovenian Spanish Spanish (Mexico) Swedish Thai Turkish Urdu Vietnamese Welsh

410

Testing Loop Quantum Gravity and Electromagnetic Dark Energy in Superconductors  

E-Print Network (OSTI)

In 1989 Cabrera and Tate reported an anomalous excess of mass of the Cooper pairs in rotating thin Niobium rings. So far, this experimental result never received a proper theoretical explanation in the context of superconductor's physics. In the present work we argue that what Cabrera and Tate interpreted as an anomalous excess of mass can also be associated with a deviation from the classical gravitomagnetic Larmor theorem due to the presence of dark energy in the superconductor, as well as with the discrete structure of the area of the superconducting Niobium ring as predicted by Loop Quantum Gravity. From Cabrera and Tate measurements we deduce that the quantization of spacetime in superconducting circular rings occurs at the Planck-Einstein scale $l_{PE} = (\\hbar G/c^3 \\Lambda)^{1/4}\\sim 3.77\\times 10 ^{-5} m$, instead of the Planck scale $l_{P} =(\\hbar G / c^3)^{1/2}=1.61 \\times 10 ^{-35} m$, with an Immirzi parameter which depends on the specific critical temperature of the superconducting material and on the area of the ring. The stephan-Boltzmann law for quantized areas delimited by superconducting rings is predicted, and an experimental concept based on the electromagnetic black-body radiation emitted by this surfaces, is proposed to test loop quantum gravity and electromagnetic dark energy in superconductors.

Clovis Jacinto de Matos

2008-12-30T23:59:59.000Z

411

On the Time Reversal Invariance of Classical Electromagnetic Theory  

E-Print Network (OSTI)

David Albert claims that classical electromagnetic theory is not time reversal invariant. He acknowledges that all physics books say that it is, but claims they are "simply wrong" because they rely on an incorrect account of how the time reversal operator acts on magnetic fields. On that account, electric fields are left intact by the operator, but magnetic fields are inverted. Albert sees no reason for the asymmetric treatment, and insists that neither field should be inverted. I argue, to the contrary, that the inversion of magnetic fields makes good sense and is, in fact, forced by elementary geometric considerations. I also suggest a way of thinking about the time reversal invariance of classical electromagnetic theory -- one that makes use of the invariant four-dimensional formulation of the theory -- that makes no reference to magnetic fields at all. It is my hope that it will be of interest in its own right, Albert aside. It has the advantage that it allows for arbitrary curvature in the background spacetime structure, and is therefore suitable for the framework of general relativity. The only assumption one needs is temporal orientability.

David B. Malament

2003-12-18T23:59:59.000Z

412

Intense Electromagnetic Outbursts from Collapsing Hypermassive Neutron Stars  

E-Print Network (OSTI)

We study the gravitational collapse of a magnetized neutron star using a novel numerical approach able to capture both the dynamics of the star and the behavior of the surrounding plasma. In this approach, a fully general relativistic magnetohydrodynamics implementation models the collapse of the star and provides appropriate boundary conditions to a force-free model which describes the stellar exterior. We validate this strategy by comparing with known results for the rotating monopole and aligned rotator solutions and then apply it to study both rotating and non-rotating stellar collapse scenarios, and contrast the behavior with what is obtained when employing the electrovacuum approximation outside the star. The non-rotating electrovacuum collapse is shown to agree qualitatively with a Newtonian model of the electromagnetic field outside a collapsing star. We illustrate and discuss a fundamental difference between the force-free and electrovacuum solutions, involving the appearance of large zones of electric-dominated field in the vacuum case. This provides a clear demonstration of how dissipative singularities appear generically in the non-linear time-evolution of force-free fluids. In both the rotating and non-rotating cases, our simulations indicate that the collapse induces a strong electromagnetic transient. In the case of sub-millisecond rotation, the magnetic field experiences strong winding and the transient carries much more energy. This result has important implications for models of gamma-ray bursts.

Luis Lehner; Carlos Palenzuela; Steven L. Liebling; Christopher Thompson; Chad Hanna

2011-12-12T23:59:59.000Z

413

2008/2009 NERSC User Survey Results  

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

13.4%. The MPP hours used by the survey respondents represents 70.2 percent of total NERSC MPP usage as of the end of the survey period. The PDSF hours used by the PDSF survey...

414

2011 NERSC User Survey (Read Only)  

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

Results Survey Text 2011 NERSC User Survey (Read Only) The survey is closed. Section 1: Overall Satisfaction with NERSC When you are finished with this page click "Save & Go to...

415

Property:BestPractices | Open Energy Information  

Open Energy Info (EERE)

BestPractices BestPractices Jump to: navigation, search Property Name BestPractices Property Type Text Description List of best practices that could be applied while using this technique. Subproperties This property has the following 22 subproperties: A Active Seismic Techniques Aeromagnetic Survey Airborne Gravity Survey B Borehole Seismic Techniques C Compound and Elemental Analysis E Exploration Drilling F FLIR F cont. Frequency-Domain Electromagnetic Survey G Geophysical Techniques I Injectivity Test Isotopic Analysis- Fluid Isotopic Analysis- Rock M Microgravity-Hybrid Microgravity O Optical Televiewer P PSInSAR R Radar Refraction Survey S Single-Well And Cross-Well Seismic Spontaneous Potential Well Log SqueeSAR Static Temperature Survey X X-Ray Fluorescence (XRF) Pages using the property "BestPractices"

416

Magnetic resonance as a channel of directed transmission of electromagnetic energy in animate nature  

E-Print Network (OSTI)

The phenomenon of magnetic resonance (either NMR or ESR) is a responce of atomic (molecular) system to the external electromagnetic effect. Electrons and nuclei, which possess magnetic moment, are the "magnetic antennas" in the biosystem "human being". They are able to receive (radiate) electromagnetic energy selectively in coordinates $H$ (magnetic field), $\

E. Ya. Fursa

2002-12-09T23:59:59.000Z

417

ccsd00001714, Nonlinear dynamics of electromagnetic pulses in cold relativistic plasmas  

E-Print Network (OSTI)

ccsd­00001714, version 2 ­ 19 Oct 2004 Nonlinear dynamics of electromagnetic pulses in cold particle and photon accel- eration, nonlinear optics, laser fusion, and others [1{6]. Intense of coupled electromagnetic and electrostatic modes in cold relativistic electron-ion plas- mas to conclude

418

Brief paper: Controlling the motion of charged particles in a vacuum electromagnetic field from the boundary  

Science Conference Proceedings (OSTI)

We consider the problem of driving two non-relativistic charged particles in a bounded vacuum electromagnetic field to the same location by applying electromagnetic forces through the boundary of the domain. The dynamics of the particles is modeled by ... Keywords: Boundary feedback, Charged particle, Maxwell-Lorentz system, Nuclear fusion, Perturbed energy

Luis R. Suazo; Weijiu Liu

2009-04-01T23:59:59.000Z

419

Handbook for Electromagnetic Compatibility of Digital Equipment in Power Plants, Volume 1  

Science Conference Proceedings (OSTI)

The two volumes of this handbook explain the fundamentals of electromagnetic compatibility and provides guidelines for ensuring the electromagnetic compatibility of digital equipment in power plants. The handbook is applicable to digital equipment being installed in all types of power plants.

1994-10-01T23:59:59.000Z

420

Handbook for Electromagnetic Compatibility of Digital Equipment in Power Plants, Volume 2  

Science Conference Proceedings (OSTI)

The two volumes of this handbook explain the fundamentals of electromagnetic compatibility and provides guidelines for ensuring the electromagnetic compatibility of digital equipment in power plants. The handbook is applicable to digital equipment being installed in all types of power plants.

1994-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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.


421

A revised electromagnetism-like mechanism for layout design of reconfigurable manufacturing system  

Science Conference Proceedings (OSTI)

The layout design problem is one of the most important issues for manufacturing system design and control. A revised electromagnetism-like mechanism (REM) is proposed in this paper for the layout design of reconfigurable manufacturing systems utilizing ... Keywords: Automated guided vehicle, Electromagnetism-like mechanism, Layout design, Variable neighbourhood search

Xianping Guan; Xianzhong Dai; Baijing Qiu; Jun Li

2012-08-01T23:59:59.000Z

422

Automatic collecting technique of low frequency electromagnetic signals and its application in earthquake study  

Science Conference Proceedings (OSTI)

Two methods to automatically collect disturbed ultra low frequency electromagnetic signals before strong earthquakes were developed in this paper, in which one is only related to the spectrum intensity of electric field, and another is additionally combined ... Keywords: Chile earthquake, DEMETER, fractal property, multi parameters, ultra low frequency electromagnetic emission

Xuemin Zhang; Roberto Battiston; Xuhui Shen; Zhima Zeren; Xinyan Ouyang; Jiadong Qian; Jing Liu; Jianping Huang; Yuanqing Miao

2010-09-01T23:59:59.000Z

423

Model reference adaptive temperature control of the electromagnetic oven process in manufacturing process  

Science Conference Proceedings (OSTI)

Nowadays, the electromagnetic ovens are used for heating the component assembly of electronic manufacturing. The control systems of the electromagnetic ovens are feedback control system and PID controller are used to control their temperature. This process ... Keywords: control theory, response optimization and model reference adaptive system

Jiraphon Srisertpol; Supot Phungphimai

2010-02-01T23:59:59.000Z

424

A fast multigrid-based electromagnetic eigensolver for curved metal boundaries on the Yee mesh  

Science Conference Proceedings (OSTI)

For embedded boundary electromagnetics using the Dey-Mittra (Dey and Mittra, 1997) [1] algorithm, a special grad-div matrix constructed in this work allows use of multigrid methods for efficient inversion of Maxwell's curl-curl matrix. Efficient curl-curl ... Keywords: Accelerator, Algorithm, Cavity, Dey, Eigensolver, Electromagnetics, Finite difference, Maxwell, Mittra, Multigrid, Yee

Carl A. Bauer, Gregory R. Werner, John R. Cary

2013-10-01T23:59:59.000Z

425

Coal Survey Frequently Asked Questions  

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

Survey FAQ Survey FAQ Available FAQ: Q. Whom do I contact if I need assistance completing a survey form? Q. Whom do I contact if I require assistance with the registration process, log-in process, instructions pertaining to JavaScript or cookies? Q. What unit of measurement should be used to calculate Btu? Q. How do I update the information that appears under Item I on IDC? Q. Under "Item II: Coal Receipts, Consumption and Stocks," can a value be negative? Q. How do I convert between short tons and metric tons? Vice Versa. Q. How do I convert between pounds to short tons? Vice Versa. Q. How do I correct a mistake on the Survey Form once I have submitted the data? Q. How do I log in if forgot my password? Q. If I accidently deleted the registration letters, how can I get my Mail ID and Code?

426

Federal Buildings Supplemental Survey -- Overview  

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

Survey > Overview Survey > Overview Overview Percent of FBSS Buildings and Floorspace by Selected Agencies, FY 1993 Percent of FBSS Buildings and Floorspace by Selected Agencies, FY 1993 Sources: Energy Information Administration, Energy Markets and End Use, 1993 Federal Buildings Supplemental Survey. Divider Line Highlights on Federal Buildings The Federal Buildings Supplemental Survey 1993 provides building-level energy-related characteristics for a special sample of commercial buildings owned by the Government. Extensive analysis of the data was not conducted because this report represents the 881 responding buildings (buildings for which interviews were completed) and cannot be used to generalize about Federal buildings in each region. Crosstabulations of the data from the 881 buildings are provided in the Detailed Tables section.

427

2001 NERSC User Survey Results  

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

1 User Survey Results 1 User Survey Results Show All | 1 2 3 4 5 ... 11 | Next » 2001 User Survey Results Table of Contents Response Summary User Information Overall Satisfaction and Importance All Satisfaction Questions and Changes from Previous Years NERSC Information Management (NIM) System Web and Communications Hardware Resources Software Training User Services Comments about NERSC Response Summary NERSC extends its thanks to the 237 users who participated in this year's survey; this compares with 134 respondents last year. The respondents represent all five DOE Science Offices and a variety of home institutions: see User Information. Your responses provide feedback about every aspect of NERSC's operation, help us judge the quality of our services, give DOE information on how well

428

2012 NERSC User Survey Results  

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

operation, help us judge the quality of our services, give DOE information on how well NERSC is doing, and point us to areas we can improve. The survey strives to be...

429

Path planning and position control and of an underactued [sic] electromagnetic formation flight satellite system in the near field  

E-Print Network (OSTI)

Electromagnetic formation flight is the process of using electromagnetic actuators (coils) on multiple spacecraft to produce relative (internal) forces in order to control the relative position and orientation of the ...

Buck, Alexander J. (Alexander James), 1989-

2013-01-01T23:59:59.000Z

430

Radiological Habits Survey: Amersham, 2004  

E-Print Network (OSTI)

.4 Wholesalers and retailers 29 4.5 Internal exposure 29 4.6 External exposure 30 4.7 Water based activities 32 5. TERRESTRIAL RADIATION PATHWAYS 35 5.1 Terrestrial survey area 35 5.2 Wholesalers and retailers 39 5.3 Internal exposure 39 6. DIRECT RADIATION PATHWAYS 43 6.1 Direct radiation survey area 43 6.2 Residential activities

431

Radiological Habits Survey, Dounreay, 2003  

E-Print Network (OSTI)

.5 Internal exposure 25 4.6 External exposure 28 5. TERRESTRIAL RADIATION PATHWAYS 32 5.1 Terrestrial survey area and local produce 32 5.2 Novel radiation pathways 33 5.3 Land cover 33 5.4 Internal exposure 34 5 conversion 14 3.2 Determination of critical groups 14 4. AQUATIC RADIATION PATHWAYS 18 4.1 Aquatic survey

432

Time-Domain Electromagnetics At Soda Lake Area (Combs 2006) | Open Energy  

Open Energy Info (EERE)

Time-Domain Electromagnetics At Soda Lake Area (Combs 2006) Time-Domain Electromagnetics At Soda Lake Area (Combs 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Time-Domain Electromagnetics At Soda Lake Area (Combs 2006) Exploration Activity Details Location Soda Lake Area Exploration Technique Time-Domain Electromagnetics Activity Date Usefulness not indicated DOE-funding Unknown Notes "EM sounding, MT, CSAMT, dipole-dipole resistivity; reservoir model?" References Jim Combs (1 January 2006) Historical Exploration And Drilling Data From Geothermal Prospects And Power Generation Projects In The Western United States Retrieved from "http://en.openei.org/w/index.php?title=Time-Domain_Electromagnetics_At_Soda_Lake_Area_(Combs_2006)&oldid=388133" Category:

433

Questions and Answers - I am creating an electromagnet for my school's  

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

Do you know whatan electromagnet is? Do you know what<br>an electromagnet is? Previous Question (Do you know what an electromagnet is?) Questions and Answers Main Index Next Question (Why does adding coils to an electromagnet make it stronger?) Why does adding coils to anelectromagnet make it stronger? I am creating an electromagnet for my school's science fair project. Does the shape of the iron core make a difference? Is solid copper wire better than stranded wire? Is copper wire best, or is another wire better? Should the wire be insulated or bare? What can I do to get the most current out of a battery? Yes, the shape of the iron core does matter. The more complete the circuit formed by the iron, the more field that you will get for a given coil and current. The best way to do a simple magnet is to have an iron core shaped

434

Correspondence between Electro-Magnetic Field and other Dark Energies in Non-linear Electrodynamics  

E-Print Network (OSTI)

In this work, we have considered the flat FRW model of the universe filled with electro-magnetic field. First, the Maxwell's electro-magnetic field in linear form has been discussed and after that the modified Lagrangian in non-linear form for accelerated universe has been considered. The corresponding energy density and pressure for non-linear electro-magnetic field have been calculated. We have found the condition such that the electro-magnetic field generates dark energy. The correspondence between the electro-magnetic field and the other dark energy candidates namely tachyonic field, DBI-essence, Chaplygin gas, hessence dark energy, k-essenece and dilaton dark energy have been investigated. We have also reconstructed the potential functions and the scalar fields in this scenario.

Maity, Sayani; Debnath, Ujjal

2011-01-01T23:59:59.000Z

435

Correspondence between Electro-Magnetic Field and other Dark Energies in Non-linear Electrodynamics  

E-Print Network (OSTI)

In this work, we have considered the flat FRW model of the universe filled with electro-magnetic field. First, the Maxwell's electro-magnetic field in linear form has been discussed and after that the modified Lagrangian in non-linear form for accelerated universe has been considered. The corresponding energy density and pressure for non-linear electro-magnetic field have been calculated. We have found the condition such that the electro-magnetic field generates dark energy. The correspondence between the electro-magnetic field and the other dark energy candidates namely tachyonic field, DBI-essence, Chaplygin gas, hessence dark energy, k-essenece and dilaton dark energy have been investigated. We have also reconstructed the potential functions and the scalar fields in this scenario.

Sayani Maity; Shuvendu Chakraborty; Ujjal Debnath

2011-04-12T23:59:59.000Z

436

Is it possible to create a quantum electromagnetic "black hole" at the Large Hadron Collider?  

E-Print Network (OSTI)

As demonstrated by Chernodub, strong magnetic field forces vacuum to develop real condensates of electrically charged rho mesons, which form an anisotropic inhomogeneous superconducting state similar to Abrikosov vortex lattice. As far as electromagnetic field behaviour is concerned, this state of vacuum constitutes a hyperbolic metamaterial [1]. Here we demonstrate that spatial variations of magnetic field may lead to formation of electromagnetic "black holes" inside this metamaterial. Similar to real black holes, horizon area of the electromagnetic "black holes" is quantized in units of the effective "Planck scale" squared. The magnetic fields of the required strength and geometrical configuration may be created on Earth in heavy-ion collisions at the Large Hadron Collider. We evaluate electromagnetic field distribution around an electromagnetic "black hole" which may be created as a result of such collision.

Igor I. Smolyaninov

2012-04-04T23:59:59.000Z

437

Evidences of regulatory and signalling role of electromagnetic fields in biological objects: review of literature and own studies  

Science Conference Proceedings (OSTI)

There are growing evidence supporting the role of electromagnetic fields and interactions in biological processes. In this paper we're trying to theoretically substantiate the feasibility and necessity of the "Theory of Electromagnetic Biological Regulation ... Keywords: antibodies, biological regulation, cell, electromagnetic field, signalling, viruses

Valeriy Zaporozhan; Andriy Ponomarenko

2008-12-01T23:59:59.000Z

438

A New Look on the Electromagnetic Duality. Suggestions and Developments  

E-Print Network (OSTI)

In this paper a new look on the electro-magnetic duality is presented and appropriately exploited. The duality analysis in the nonrelativistic and relativistic formulations is shown to lead to the idea the mathematical model field to be a differential form valued in the 2-dimensional vector space ${\\cal R}^2$. A full ${\\cal R}^2$ covariance is achieved through introducing explicitly the canonical complex structure ${\\cal I}$ of ${\\cal R}^2$ in the nonrelativistic equations. The connection of the relativistic Hodge * with ${\\cal I}$ is shown and a complete coordinate free relativistic form of the equations and the conservative quantities is obtained. The duality symmetry is interpreted as invariance of the conservative quantities and conservation equations.

Donev, S

2000-01-01T23:59:59.000Z

439

A New Look on the Electromagnetic Duality. Suggestions and Developments  

E-Print Network (OSTI)

In this paper a new look on the electro-magnetic duality is presented and appropriately exploited. The duality analysis in the nonrelativistic and relativistic formulations is shown to lead to the idea the mathematical model field to be a differential form valued in the 2-dimensional vector space ${\\cal R}^2$. A full ${\\cal R}^2$ covariance is achieved through introducing explicitly the canonical complex structure ${\\cal I}$ of ${\\cal R}^2$ in the nonrelativistic equations. The connection of the relativistic Hodge * with ${\\cal I}$ is shown and a complete coordinate free relativistic form of the equations and the conservative quantities is obtained. The duality symmetry is interpreted as invariance of the conservative quantities and conservation equations.

Stoil Donev

2000-06-27T23:59:59.000Z

440

On Digital Radio Receiver Performance in Electromagnetic Interference Environments  

E-Print Network (OSTI)

adiated emission from electronic equipment, co-located to a digital radio receiver, can affect receiving performance. It is therefore of great importance that this undesired emission be considered in the early design phase of a system containing radio equipment. For this purpose, methods to estimate the performance degradation on digital radio receivers in such environment must be available. From a military point of view, such methods are necessary for at least two important situations; 1) The communication system is not subject to interference from hostile jammers. In this case, undesired electromagnetic interference will decrease the operating range of the radio link. 2) The communication system is subject to interference from hostile jammers. In this case, the ability to withstand jamming is degraded by the undesired interference, as the latter degrades the signal protection devices in the communication system. A tactical consequence of this is that the jammer can obtain the same ...

Peter Stenumgaard; Peter Stenumgaard; Isrn Kth/rst/r--/ --se

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Strong-field spatial interference in a tailored electromagnetic bath  

E-Print Network (OSTI)

Light scattered by a regular structure of atoms can exhibit interference signatures, similar to the classical double-slit. These first-order interferences, however, vanish for strong light intensities, restricting potential applications. Here, we show how to overcome these limitations to quantum interference in strong fields. First, we recover the first-order interference in strong fields via a tailored electromagnetic bath with a suitable frequency dependence. At strong driving, the optical properties for different spectral bands are distinct, thus extending the set of observables. We further show that for a two-photon detector as, e.g., in lithography, increasing the field intensity leads to twice the spatial resolution of the second-order interference pattern compared to the weak-field case.

M. Macovei; J. Evers; G. -x. Li; C. H. Keitel

2006-06-19T23:59:59.000Z

442

Electromagnetic Forces and Fields in a Rotating Reference Frame  

E-Print Network (OSTI)

Maxwells equations and the equations governing charged particle dynamics are presented for a rotating coordinate system with the global time coordinate of an observer on the rotational axis. Special care is taken in defining the relevant entities in these equations. Ambiguities in the definitions of the electromagnetic fields are pointed out, and in fact are shown to be essential in such a system of coordinates. The Lorentz force is found to have an extra term in this frame, which has its origins in relativistic mass. A related term in the energy equation, which allows inertia to be gained even during strict corotation, suggests ways existing pulsar magnetosphere models may be modified to match observed braking indices more closely. Subject headings: magnetic fields relativity pulsars: general 3

Paul N. Arendt

1998-01-01T23:59:59.000Z

443

Electromagnetic and Hadron Calorimeters in the MIPP Experiment  

E-Print Network (OSTI)

The purpose of the MIPP experiment is to study the inclusive production of photons, pions, kaons and nucleons in pi, K and p interactions on various targets using beams from the Main Injector at Fermilab. The function of the calorimeters is to measure the production of forward-going neutrons and photons. The electromagnetic calorimeter consist of 10 lead plates interspersed with proportional chambers. It was followed by the hadron calorimeter with 64 steel plates interspersed with scintillator. The data presented were collected with a variety of targets and beam momenta from 5 GeV/c to 120 GeV/c. The energy calibration of both calorimeters with electrons, pions, kaons, and protons is discussed. The resolution for electrons was found to be 0.27/sqrt(E), and for hadrons the resolution was 0.554/sqrt(E) with a constant term of 2.6%. The performance of the calorimeters was tested on a neutron sample.

T. S. Nigmanov; H. R. Gustafson; M. J. Longo; H. K. Park; D. Rajaram; C. Dukes; L. C. Lu; C. Materniak; K. Nelson; A. Norman; H. Meyer; A. Lebedev; S. Seun; N. Graf; J. M. Paley; G. Aydin; Y. Gunaydin; D. E. Miller

2009-03-13T23:59:59.000Z

444

Relativistic electromagnetic flat top solitons and their stability  

Science Conference Proceedings (OSTI)

The inclusion of ion response in the study of relativistically intense electromagnetic laser pulse propagation in plasma yields certain distinct varieties of single peak solitonic structures. A flat top slow moving structure (for which the various fields have a flat profile over a wide spatial range) is one such solution. A detailed characterization of these solutions along with the eigen spectrum of their formation in the parameter space has been presented. The evolution of this particular solution is studied in detail with the help of a coupled fluid Maxwell set of equations. The study shows that the flat top solution is unstable. The instability is characterized as the backward Brillouin instability for which the electron quiver velocity plays the role of the effective temperature.

Sundar, Sita; Das, Amita; Saxena, Vikrant; Kaw, Predhiman; Sen, Abhijit [Institute for Plasma Research, Bhat, Gandhinagar-382428 (India)

2011-11-15T23:59:59.000Z

445

Electromagnetic valve for controlling the flow of molten, magnetic material  

DOE Patents (OSTI)

An electromagnetic valve for controlling the flow of molten, magnetic material is provided, which comprises an induction coil for generating a magnetic field in response to an applied alternating electrical current, a housing, and a refractory composite nozzle. The nozzle is comprised of an inner sleeve composed of an erosion resistant refractory material (e.g., a zirconia ceramic) through which molten, magnetic metal flows, a refractory outer shell, and an intermediate compressible refractory material, e.g., unset, high alumina, thermosetting mortar. The compressible refractory material is sandwiched between the inner sleeve and outer shell, and absorbs differential expansion stresses that develop within the nozzle due to extreme thermal gradients. The sandwiched layer of compressible refractory material prevents destructive cracks from developing in the refractory outer shell.

Richter, Tomas (State College, PA)

1998-01-01T23:59:59.000Z

446

Electromagnetic valve for controlling the flow of molten, magnetic material  

DOE Patents (OSTI)

An electromagnetic valve for controlling the flow of molten, magnetic material is provided, which comprises an induction coil for generating a magnetic field in response to an applied alternating electrical current, a housing, and a refractory composite nozzle. The nozzle is comprised of an inner sleeve composed of an erosion resistant refractory material (e.g., a zirconia ceramic) through which molten, magnetic metal flows, a refractory outer shell, and an intermediate compressible refractory material, e.g., unset, high alumina, thermosetting mortar. The compressible refractory material is sandwiched between the inner sleeve and outer shell, and absorbs differential expansion stresses that develop within the nozzle due to extreme thermal gradients. The sandwiched layer of compressible refractory material prevents destructive cracks from developing in the refractory outer shell. 5 figs.

Richter, T.

1998-06-16T23:59:59.000Z

447

Searching for electromagnetic counterparts of gravitational wave transients  

E-Print Network (OSTI)

A pioneering electromagnetic (EM) observation follow-up program of candidate gravitational wave (GW) triggers has been performed, Dec 17 2009 to Jan 8 2010 and Sep 4 to Oct 20 2010, during the recent LIGO/Virgo run. The follow-up program involved ground-based and space EM facilities observing the sky at optical, X-ray and radio wavelengths. The joint GW/EM observation study requires the development of specific image analysis procedures able to discriminate the possible EM counterpart of GW trigger from background events. The paper shows an overview of the EM follow-up program and the developing image analysis procedures as they are applied to data collected with TAROT and Zadko.

M. Branchesi; on behalf of the LIGO Scientific Collaboration; the Virgo Collaboration; A. Klotz; M. Laas-Bourez

2011-10-14T23:59:59.000Z

448

Performance of the PrimEx Electromagnetic Calorimeter  

SciTech Connect

We report the design and performance of the hybrid electromagnetic calorimeter consisting of 1152 PbWO{sub 4} crystals and 576 lead glass blocks for the PrimEx experiment at the Jefferson Laboratory. The detector was built for high precision measurement of the neutral pion lifetime via the Primakoff effect. Calorimeter installation and commissioning was completed with the first physics run in fall of 2004. We present the energy and position resolution of the calorimeter. Obtained {pi}{sup 0} mass resolution of 1.3 MeV/c{sup 2} and its production angle resolution of 0.34 mrad demonstrate the ability of the experiment to extract the {pi}{sup 0} lifetime on one percent level.

M. Kubantsev; I. Larin; A. Gasparian

2006-06-05T23:59:59.000Z

449

Electromagnetic compatibility, tropospheric and ionospheric aspects of SPS MPTS operations  

DOE Green Energy (OSTI)

The results of a preliminary study of the effects of operation of a Solar Power Satellite (SPS) on the general performance of terrestrial and space based electromagnetic systems are given. In addition, the effects of a passing high energy Microwave Power Transmission System (MPTS) through the troposphere and through the ionosphere are also considered. The SPS as envisioned will be a satellite system in geosynchronous orbit with a solar array of about 144 square kilometers. The purpose of the SPS is to capture solar energy, convert the radiant energy to microwave energy and transmit it to the earth as a beam by means of a phased array antenna one kilometer in diameter at a frequency of 2.45 GHz. At the surface of the earth, the energy beam will be captured by an antenna about 100 square kilometers which will convert the microwave energy to high voltage ac power for injection into an electrical power network. The impact of SPS operation on the lower atmosphere, the ionosphere, and on operational telecommunication systems, is addressed in a preliminary manner. Topics include (a) further study on the susceptibility of electronic equipment to SPS emissions; (b) further study on the interference potential of SPS emissions and harmonics to electromagnetic systems; (c) study of the impact of tropospheric attenuation and scattering associated with SPS operation on microwave terrestrial, air/ground and satellite/ground telecommunication systems; (d) further theoretical study on the production of ionospheric irregularities resulting from microwave heating; and (e) further experimental evidence of the impact of SPS operation on the telecommunication system performance collected in conjunction with a Platteville microwave heating experiment.

Not Available

1978-03-01T23:59:59.000Z

450

The Bolocam Galactic Plane Survey: Survey Description and Data Reduction  

E-Print Network (OSTI)

We present the Bolocam Galactic Plane Survey (BGPS), a 1.1 mm continuum survey at 33" effective resolution of 170 square degrees of the Galactic Plane visible from the northern hemisphere. The survey is contiguous over the range -10.5 90%) and the linear scale at which the attenuation re aches 50% is 3.8'. Comparison with other millimeter-wave data sets implies a possible systematic offset in flux calibration, for which no cause has been discovered. This presentation serves as a companion and guide to the public data release through NASA's Infrared Processing and Analysis Center (IPAC) Infrared Science Archive (IRSA). New data releases will be provided through IPAC IRSA with any future improvements in the reduction.

Aguirre, James E; Dunham, Miranda K; Drosback, Meredith M; Bally, John; Battersby, Cara; Bradley, Eric Todd; Cyganowski, Claudia; Dowell, Darren; Evans, Neal J; Glenn, Jason; Harvey, Paul; Rosolowsky, Erik; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan P

2010-01-01T23:59:59.000Z

451

RESIDENTIAL ENERGY CONSUMPTION SURVEY 1997 CONSUMPTION AND ...  

U.S. Energy Information Administration (EIA)

Residential Sector energy Intensities for 1978-1997 using data from EIA Residential Energy Consumption Survey.

452

Zigzag Survey Designs in Line Transect Sampling  

E-Print Network (OSTI)

survey lines are frequently used in shipboard and aerial line transect surveys of animal populations; Systematic designs; Zigzag designs. 1. INTRODUCTION Shipboard and aerial line transect surveys are widelyZigzag Survey Designs in Line Transect Sampling Samantha STRINDBERG and Stephen T. BUCKLAND Zigzag

Buckland, Steve

453

Residential Energy Consumption Survey: Quality Profile  

SciTech Connect

The Residential Energy Consumption Survey (RECS) is a periodic national survey that provides timely information about energy consumption and expenditures of U.S. households and about energy-related characteristics of housing units. The survey was first conducted in 1978 as the National Interim Energy Consumption Survey (NIECS), and the 1979 survey was called the Household Screener Survey. From 1980 through 1982 RECS was conducted annually. The next RECS was fielded in 1984, and since then, the survey has been undertaken at 3-year intervals. The most recent RECS was conducted in 1993.

NONE

1996-03-01T23:59:59.000Z

454

A Survey of Department of Energy-Sponsored Geophysical Research for Shallow Waste Site Characterization  

Science Conference Proceedings (OSTI)

Subsurface contamination plagues many U.S. Department of Energy (DOE) sites and threatens groundwater supplies. This survey discusses research sponsored by the DOE Environmental Management Science Program (EMSP) for geophysical characterization of the vadose zone at the Idaho National Engineering and Environmental Laboratory (INEEL) and other contaminated sites. Various types of geophysical imaging techniques are used to characterize the shallow subsurfaceelectromagnetic, ground-penetrating radar, electrical, seismic, and nuclear magnetic resonance. Three common themes appear in the research surveyed in this article: (1) the development of high-resolution imaging capabilities to capture important details of the heterogeneous nature of subsurface properties and processes, (2) the coupling of non-intrusive survey geophysical measurements (e.g., electrical surveys) with detailed quantitative precise point-sensor measurements (e.g., lysimeters and vapor-port systems) or borehole (e.g., nuclear magnetic resonance, neutron-based moisture, and geochemical tools) measurements to extend high-precision knowledge away from the borehole, and finally (3) the application of multiple geophysical methods to constrain the uncertainty in determining critical subsurface physical properties. Laboratory, field, theoretical, and computational studies are necessary to develop our understanding of the manner in which contaminants travel through the vadose zone. Applications of geophysical methods to various contaminated areas at the INEEL are given.

Donna Post Guillen

2004-01-01T23:59:59.000Z

455

Department of Energy: 2011 Federal Employee Viewpoint Survey...  

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

Department of Energy 2011 Federal Employee Viewpoint Survey: Trend Report Response Summary Surveys...

456

Refraction Survey | Open Energy Information  

Open Energy Info (EERE)

Refraction Survey Refraction Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Refraction Survey Details Activities (16) Areas (13) Regions (5) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Active Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Can provide information on crustal thickness, depth to basement. Hydrological: Thermal: Cost Information Low-End Estimate (USD): 6,206.80620,680 centUSD 6.207 kUSD 0.00621 MUSD 6.2068e-6 TUSD / mile Median Estimate (USD): 10,877.331,087,733 centUSD 10.877 kUSD 0.0109 MUSD 1.087733e-5 TUSD / mile

457

The UKIDSS Galactic Plane Survey  

E-Print Network (OSTI)

The UKIDSS Galactic Plane Survey (GPS) is one of the five near infrared Public Legacy Surveys that are being undertaken by the UKIDSS consortium, using the Wide Field Camera on the United Kingdom Infrared Telescope. It is surveying 1868 sq.deg. of the northern and equatorial Galactic plane at Galactic latitudes -5Science results from DR2 and from the Science Verification programme. These results illustrate how GPS data will frequently be combined with data taken in other wavebands to produce scientific results. The Demonstration Science includes studies of: (i) the star formation region G28.983-0.603, cross matching with Spitzer-GLIMPSE data to identify YSOs; (ii) the M17 nebula; (iii) H_2 emission in the rho Ophiuchi dark cloud; (iv) X-ray sources in the Galactic Centre; (v) external galaxies in the Zone of Avoidance; (vi) IPHAS-GPS optical-infrared spectrophotometric typing. (abridged).

P. W. Lucas; M. G. Hoare; A. Longmore; A. C. Schroder; C. J. Davis; A. Adamson; R. M. Bandyopadhyay; R. de Grijs; M. Smith; A. Gosling; S. Mitchison; A. Gaspar; M. Coe; M. Tamura; Q. Parker; M. Irwin; N. Hambly; J. Bryant; R. S. Collins; N. Cross; D. W. Evans; E. Gonzalez-Solares; S. Hodgkin; J. Lewis; M. Read; M. Riello; E. T. W. Sutorius; A. Lawrence; J. E. Drew; S. Dye; M. A. Thompson

2007-12-01T23:59:59.000Z

458

Geodetic Survey | Open Energy Information  

Open Energy Info (EERE)

Geodetic Survey Geodetic Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Geodetic Survey Details Activities (17) Areas (10) Regions (5) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: Map regional strain rates Hydrological: Thermal: Cost Information Low-End Estimate (USD): 250.0025,000 centUSD 0.25 kUSD 2.5e-4 MUSD 2.5e-7 TUSD / point Median Estimate (USD): 600.0060,000 centUSD 0.6 kUSD 6.0e-4 MUSD 6.0e-7 TUSD / point High-End Estimate (USD): 1,500.00150,000 centUSD 1.5 kUSD 0.0015 MUSD 1.5e-6 TUSD / point Time Required Low-End Estimate: 5 days0.0137 years

459

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

460

Effects of Detuning on Control of Intersubband Quantum Well Transitions with Chirped Electromagnetic Pulses  

Science Conference Proceedings (OSTI)

We study the interaction of a chirped electromagnetic pulse with intersubband transitions of a double semiconductor quantum well. We specifically consider the interaction of the ground and first excited subbands with the electromagnetic field and use the nonlinear density matrix equations for the description of the system dynamics. These equations are solved numerically for various values of the electron sheet density for a realistic double GaAs/AlGaAs quantum well, and the efficiency of population transfer is discussed with emphasis given to the effects of the detuning of the central frequency of the electromagnetic field from resonance.

Blekos, Konstantinos; Terzis, Andreas F. [Physics Department, School of Natural Sciences, University of Patras, Patras 265 04 (Greece); Simserides, Constantinos [Institute of Materials Science, National Center of Scientific Research Demokritos, 153 10 Athens (Greece); Paspalakis, Emmanuel [Materials Science Department, School of Natural Sciences, University of Patras, Patras 265 04 (Greece)

2010-11-10T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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

Reflection Survey | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Reflection Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Reflection Survey Details Activities (35) Areas (22) Regions (2) NEPA(3) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Active Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

462

Aeromagnetic Survey | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Aeromagnetic Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Aeromagnetic Survey Details Activities (26) Areas (19) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Magnetic Techniques Parent Exploration Technique: Magnetic Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: map structure, basin fill thickness, and magnetic mineral concentrations in ore bodies Hydrological: Thermal: Cost Information Low-End Estimate (USD): 22.532,253 centUSD

463

Biomedical question answering: A survey  

Science Conference Proceedings (OSTI)

Objectives: In this survey, we reviewed the current state of the art in biomedical QA (Question Answering), within a broader framework of semantic knowledge-based QA approaches, and projected directions for the future research development in this critical ... Keywords: Answer/reason extraction, Biomedical question answering, Semantic information extraction

Sofia J. Athenikos; Hyoil Han

2010-07-01T23:59:59.000Z

464

Automotive Powertrain Control - A Survey  

E-Print Network (OSTI)

This paper surveys recent and historical publications on automotive powertrain control. Controloriented models of gasoline and diesel engines and their aftertreatment systems are reviewed, and challenging control problems for conventional engines, hybrid vehicles and fuel cell powertrains are discussed. Fundamentals are revisited and advancements are highlighted. A comprehensive list of references is provided. 1

Jeffrey A. Cook; Jing Sun; Julia H. Buckl; Ilya V. Kolmanovsky; Huei Peng; Jessy W. Grizzle

2006-01-01T23:59:59.000Z

465

Quantum Gravity An introductory survey  

E-Print Network (OSTI)

Quantum Gravity An introductory survey Hermann Nicolai Max-Planck-Institut f¨ur Gravitationsphysik (Albert­Einstein­Institut, Potsdam) . ­ p.1/25 #12;Why Quantum Gravity? . ­ p.2/25 #12;Why Quantum Gravity theories: . ­ p.2/25 #12;Why Quantum Gravity? General Relativity and Quantum Theory: not only very

Rossak, Wilhelm R.

466

The NRC planetary decadal survey  

Science Conference Proceedings (OSTI)

Once every ten years, the National Research Council carries out a "decadal survey" in planetary science. The objective is to recommend a decade-long national strategy for solar system exploration for NASA and the NSF. The most recent planetary decadal ...

Steven W. Squyres

2011-03-01T23:59:59.000Z

467

Body Area Networks: A Survey  

Science Conference Proceedings (OSTI)

Advances in wireless communication technologies, such as wearable and implantable biosensors, along with recent developments in the embedded computing area are enabling the design, development, and implementation of body area networks. This class of ... Keywords: body area networks, survey, wireless sensor networks

Min Chen; Sergio Gonzalez; Athanasios Vasilakos; Huasong Cao; Victor C. Leung

2011-04-01T23:59:59.000Z

468

Time-Domain Electromagnetics At Hualalai Northwest Rift Area (Thomas, 1986)  

Open Energy Info (EERE)

Time-Domain Electromagnetics At Hualalai Northwest Time-Domain Electromagnetics At Hualalai Northwest Rift Area (Thomas, 1986) Exploration Activity Details Location Hualalai Northwest Rift Area Exploration Technique Time-Domain Electromagnetics Activity Date Usefulness useful DOE-funding Unknown Notes Three time-domain electromagnetic soundings were conducted on the middle northwest rift at elevations of 280-320 m (Fig. 40) (Kauahikaua and Mattice, 1981). These soundings penetrated to a greater depth than the Schlumberger soundings and two of them were able to resolve basement resistivities ranging from 9 to 12 ohm-m at depths of 1500 to 1800 m. One sounding detected a 9 ohm.m layer at 600 m depth that was underlain by a more resistive basement. These results suggest that thermal fluids may be responsible for the low-resistivity basement, whereas the high-resistivity

469

Electromagnetic Casimir forces of parabolic cylinder and knife-edge geometries  

E-Print Network (OSTI)

An exact calculation of electromagnetic scattering from a perfectly conducting parabolic cylinder is employed to compute Casimir forces in several configurations. These include interactions between a parabolic cylinder and ...

Graham, Noah

470

Time-Domain Electromagnetics At Kilauea East Rift Area (Thomas, 1986) |  

Open Energy Info (EERE)

Time-Domain Electromagnetics At Kilauea East Rift Time-Domain Electromagnetics At Kilauea East Rift Area (Thomas, 1986) Exploration Activity Details Location Kilauea East Rift Area Exploration Technique Time-Domain Electromagnetics Activity Date Usefulness useful DOE-funding Unknown Notes A series of time-domain electromagnetic (TDEM) soundings were also performed in the lower East Rift Zone as part of the HGP exploration program (Klein and Kauahikaua, 1975; Kauahikaua and Klein, 1977); this work was recently expanded to include additional TDEM and vertical electrical soundings, and the entire data set was reinterpreted (Kauahikaua, 1981b; Kauahikaua and Mattice, 1981). The resistivity model presented by Kauahikaua (1981b) suggests that moderate to high basement resistivities, corresponding to cold freshwater saturated basalts, are present north of

471

Three-Dimensional Electromagnetic Particle-in-Cell Code Using High Performance Fortran on PC Cluster  

Science Conference Proceedings (OSTI)

A three-dimensional full electromagnetic particle-in-cell (PIC) code, TRISTAN (Tridimensional Stanford) code, has been parallelized using High Performance Fortran (HPF) as a RPM (Real Parallel Machine). In the simulation, the simulation domains are decomposed ...

DongSheng Cai; Yaoting Li; Ken-ichi Nishikawa; Chiejie Xiao; Xiaoyan Yan

2002-05-01T23:59:59.000Z

472

Electromagnetic wave scattering by discrete random media with remote sensing applications  

E-Print Network (OSTI)

The scattering of electromagnetic waves in medium with randomly distributed discrete scatterers is studied. Analytical and numerical solutions to several problems with implications for the active and passive remote sensing ...

Ao, Chi On, 1970-

2001-01-01T23:59:59.000Z

473

Design of a high-speed, meso-scale nanopositioners driven by electromagnetic actuators  

E-Print Network (OSTI)

The purpose of this thesis is to generate the design and fabrication knowledge that is required to engineer high-speed, six-axis, meso-scale nanopositioners that are driven by electromagnetic actuators. When compared to ...

Golda, Dariusz, 1979-

2008-01-01T23:59:59.000Z

474

Understanding quantum polarized-light interference experiments through electromagnetic energy flow lines  

E-Print Network (OSTI)

General expressions to obtain the electromagnetic energy flow lines behind interference gratings are derived in the case where the incident light consists of a polarized monochromatic plane wave. These flow lines show how the electromagnetic energy redistributes in space (behind the grating) until the Fraunhofer regime is reached, thus providing an interpretation based on photon paths for the physics underlying interference phenomena with light. Within this interpretation, one finds that the outcome from a Young's experiment is related in a simple manner to how the electromagnetic energy flux is influenced by the experimental setup, specifically, how the presence of polarizers on each slit and the boundaries imposed by having one or both slits open affect at each time the electromagnetic energy flow, which is directly linked to the Arago-Fresnel laws.

Sanz, A S; Bozic, M; Miret-Arts, S

2009-01-01T23:59:59.000Z

475

Electromagnetically-driven ultra-fast tool servos for diamond turning  

E-Print Network (OSTI)

This thesis presents the design, implementation, and control of a new class of fast tool servos (FTS). The primary thesis contributions include the design and experimental demonstration of: novel ultra-fast electromagnetic ...

Lu, Xiaodong, Ph. D. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

476

Plenary lecture I: electromagnetic low frequency radiation from natural phenomena - data analysis and modelling  

Science Conference Proceedings (OSTI)

Can severe weather conditions, volcanic eruptions or even earthquakes be predicted from monitoring and analyzing electromagnetic radiation especially in very and ultra low frequency ranges? What signatures in this frequency range leave solar wind, solar ...

Ernst D. Schmitter

2008-07-01T23:59:59.000Z

477

Improper Rotations'Symmetry of Electromagnetic Field and New Conserved Quantity of Complex Fields  

E-Print Network (OSTI)

It is established the partition of linear space $$ over the field of genuine scalars and pseudoscalars, the vectors in which are sets of contravariant and covariant electromagnetic field tensors and pseudotensors $F^{\\mu\

Yearchuck, D

2009-01-01T23:59:59.000Z

478

An Intercomparison Study Using Electromagnetic Three-Component Turbulent Velocity Probes  

Science Conference Proceedings (OSTI)

An intercomparison study was performed with four Russian-made, electromagnetic probes capable of measuring three components of oceanic turbulent velocities and two single-axis velocity sensors familiar to western scientists, namely, a hot-film ...

David Y. Lai; Vadim T. Paka; Donald P. Delisi; Anatoli V. Arjannikov; Sergei A. Khanaev

2000-07-01T23:59:59.000Z

479

Phenomenon of parametric trapping of electromagnetic waves in an inhomogeneous plasma  

SciTech Connect

A theory is developed of absolute parametric aperiodic instability in a spatially inhomogeneous plasma, when the electromagnetic waves generated in the plasma are trapped by the plasma near the peaks of the pumping-wave field.

Silin, V.P.; Starodub, A.N.

1977-10-01T23:59:59.000Z

480

Numerical methods for electromagnetic wave propagation and scattering in complex media  

E-Print Network (OSTI)

Numerical methods are developed to study various applications in electromagnetic wave propagation and scattering. Analytical methods are used where possible to enhance the efficiency, accuracy, and applicability of the ...

Moss, Christopher D. Q. (Christopher Doniert Q.), 1973-

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency-domain electromagnetic survey" 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.


481

Visualizing electromagnetic field and particle simulations in accelerators with ParaView  

Science Conference Proceedings (OSTI)

SLAC performs large-scale simulations of Electromagnetic fields and particles for accelerator applications. These simulations run on intricate high order finite element meshes and produce field strengths spanning tens of orders of magnitudes. Such simulations ...

Greg L. Schussman

2009-11-01T23:59:59.000Z

482

An Electromagnetic Vorticity and Velocity Sensor for Observing Finescale Kinetic Fluctuations in the Ocean  

Science Conference Proceedings (OSTI)

An instrument has been developed that measures finescale velocity and vorticity in seawater based on the principles of motional induction. This instrument, the electromagnetic vorticity meter (EMVM), measures components of the gradient and ...

Thomas B. Sanford; James A. Carlson; John H. Dunlap; Mark D. Prater; Ren-Chieh Lien

1999-11-01T23:59:59.000Z

483

Electrically insulating phosphate coatings for iron powder based electromagnetic core applications  

E-Print Network (OSTI)

Powdered metals, such as iron, are a common building block for electromagnetic cores. An iron powder was reacted with phosphoric acid to create a layer of iron phosphate on each particle. This electrically insulating ...

Nolan, William Rane

2009-01-01T23:59:59.000Z

484

Gustav Mie and the Evolving Discipline of Electromagnetic Scattering by Particles  

Science Conference Proceedings (OSTI)

The year 2008 marks the centenary of the seminal paper by Gustav Mie on electromagnetic scattering by homogeneous spherical particles. Having been cited in almost 4,000 journal articles since 1955 (according to the Science Citation Index Expanded ...

Michael I. Mishchenko; Larry D. Travis

2008-12-01T23:59:59.000Z

485

Mechanical and electromagnetic transverse load effects on superconducting niobium-tin performance  

E-Print Network (OSTI)

Cable-in-Conduit Conductor is the typical geometry for the conductor employed in superconducting magnets for fusion applications. Once energized, the magnets produce an enormous electromagnetic force and very large transverse ...

Chiesa, Luisa

2009-01-01T23:59:59.000Z

486

High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator  

E-Print Network (OSTI)

This thesis describes the development of two high bandwidth short-stroke rotary fast tool servos and the hybrid rotary/linear electromagnetic actuator developed for one of them. Design insights, trade-off methodologies, ...

Montesanti, Richard Clement

2005-01-01T23:59:59.000Z

487

RF Loading Effects of Aircraft Seats in an Electromagnetic Reverberating Environment  

Science Conference Proceedings (OSTI)

Loading effects of aircraft seats in an electromagnetic reverberating environment are investigated. The effects are determined by comparing the reverberation chamber''s insertion losses with and without the seats. The average per-seat absorption cross-sections ...

Nguyen Truong X.

2000-12-01T23:59:59.000Z

488

Guidelines for Electromagnetic Interference Testing of Power Plant Equipment: Revision 3 to TR-102323  

Science Conference Proceedings (OSTI)

To continue meeting safety and reliability requirements while controlling costs, operators of nuclear power plants must be able to replace and upgrade equipment in a cost-effective manner. One issue that has been problematic for new plant equipment and especially for digital instrumentation and control (I&C) systems in recent years is electromagnetic compatibility (EMC). The EMC issue usually involves testing to show that critical equipment will not be adversely affected by electromagnetic interference (...

2004-11-30T23:59:59.000Z

489

Turbine-Generator Topics for Power Plant Engineers: Fundamentals of Electromagnetic Signature Analysis  

Science Conference Proceedings (OSTI)

Electromagnetic signature analysis (EMSA) is the process used to evaluate the electromagnetic interference (EMI) generated by abnormalities in almost any energized power plant equipmentfrom cable connections to broken rotor bars in a motor to the isolated phase bus and generator step-up transformer. EMSA will detect any defect that involves EMI, noise, arcing, corona, partial discharge, gap discharge, sparking or microsparking, or any combination of these.With EMSA, every signal ...

2013-02-15T23:59:59.000Z

490

Review of High Frequency Conducted Susceptibility Limits for Electromagnetic Compatibility Testing  

Science Conference Proceedings (OSTI)

To continue meeting safety and reliability requirements while controlling costs, operators of nuclear power plants must be able to replace and upgrade equipment in a cost-effective manner. One issue that has been problematic for new plant equipment and especially for digital instrumentation and control (I&C) systems in recent years is electromagnetic compatibility (EMC). The EMC issue usually involves testing to show that critical equipment will not be adversely affected by electromagnetic interference (...

2007-12-14T23:59:59.000Z

491

Technical Guidance for Achieving Higher Levels of Electromagnetic Compatibility for Advanced Nuclear Power Plants  

Science Conference Proceedings (OSTI)

This report presents guidance for enhancing electromagnetic compatibility (EMC) for advanced nuclear power plants (NPPs). Included is a summary of EMC challenges facing these plants and the threats that utilities, equipment designers, and plant designers must be aware of. The following requested areas are covered: 1) programmatically addressing EMC through the development of an EMC protection system, 2) minimizing the use of exclusion zones through the demonstration of electromagnetic energy (EM) calcula...

2010-12-22T23:59:59.000Z

492

Interaction of High Intensity Electromagnetic Waves with Plasmas  

SciTech Connect

The focus of our work during the duration of this grant was on the following areas: (a) the fundamental plasma physics of intense laser-plasma interactions, including the nonlinear excitation of plasma waves for accelerator applications, as well as the recently discovered by us phenomenon of the relativistic bi-stability of relativistic plasma waves driven by a laser beatwave; (b) interaction of high power microwave beams with magnetized plasma, including some of the recently discovered by us phenomena such as the Undulator Induced Transparency (UIT) as well as the new approaches to dynamic manipulation of microwave pulses; (c) investigations of the multi-color laser pulse interactions in the plasma, including the recently discovered by us phenomenon of Electromagnetic Cascading (EC) and the effect of the EC of three-dimensional dynamics of laser pulses (enhanced/suppressed selffocusing etc.); (d) interaction of high-current electron beams with the ambient plasma in the context of Fast Ignitor (FI) physics, with the emphasis on the nonlinear dynamics of the Weibel instability and beam filamentation.

G. Shvets

2008-10-03T23:59:59.000Z

493

Electromagnetic effects of neutrinos in an electron gas  

E-Print Network (OSTI)

We study the electromagnetic properties of a system that consists of an electron background and a neutrino gas that may be moving or at rest, as a whole, relative to the background. The photon self-energy for this system is characterized by the usual transverse and longitudinal polarization functions, and two additional ones which are the focus of our calculations, that give rise to birefringence and anisotropic effects in the photon dispersion relations. Expressions for them are obtained, which depend on the neutrino number densities and involve momentum integrals over the electron distribution functions, and are valid for any value of the photon momentum and general conditions of the electron gas. Those expressions are evaluated explicitly for several special cases and approximations which are generally useful in astrophysical and cosmological settings. Besides studying the photon dispersion relations, we consider the macroscopic electrodynamic equations for this system, which involve the standard dielectric and permeability constants plus two additional ones related to the photon self-energy functions. As an illustration, the equations are used to discuss the evolution of a magnetic field perturbation in such a medium. This particular phenomena has also been considered in a recent work by Semikoz and Sokoloff as a mechanism for the generation of large-scale magnetic fields in the Early Universe as a consequence of the neutrino-plasma interactions, and allows us to est