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Note: This page contains sample records for the topic "high-resolution subsurface imaging" from the National Library of EnergyBeta (NLEBeta).
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1

Technologies Provide High-Resolution Subsurface Imaging of Vadose Zone  

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

Technologies Provide High-Resolution Subsurface Imaging of Vadose Technologies Provide High-Resolution Subsurface Imaging of Vadose Zone Contamination at Hanford Site Technologies Provide High-Resolution Subsurface Imaging of Vadose Zone Contamination at Hanford Site May 17, 2012 - 12:00pm Addthis Shown here are high-resolution, three-dimensional ERT images of contaminant distribution Shown here are high-resolution, three-dimensional ERT images of contaminant distribution RICHLAND, Wash. - Cold War waste disposal practices resulted in both planned and unplanned releases of large amounts of radionuclide and heavy metal contamination into the subsurface throughout the DOE complex. Characterizing the distribution of the resulting environmental contamination remains one of the single most significant challenges limiting subsurface remediation and closure, particularly for the

2

High-resolution subsurface water-ice distributions on Mars  

Science Journals Connector (OSTI)

... Theoretical models indicate that water ice is stable in the shallow subsurface (depths of water-ice table that steadily increases in depth with decreasing latitude. More detailed modelling has ...

Joshua L. Bandfield

2007-05-03T23:59:59.000Z

3

Light energy matching method in high-resolution image reconstruction  

Science Journals Connector (OSTI)

Many approaches for high-resolution image reconstruction have been proposed in some literatures. One of the most commonly ways is to reconstruct a high-resolution image from a...

Wang, Ling; Xu, Zhihai; Feng, Huajun; Zhang, Ping

2003-01-01T23:59:59.000Z

4

High-Resolution Crack Imaging Reveals Degradation Processes in...  

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

Crack Imaging Reveals Degradation Processes in Nuclear Reactor Structural Materials. High-Resolution Crack Imaging Reveals Degradation Processes in Nuclear Reactor Structural...

5

Towards high resolution quantitative subsurface models by full waveform inversion  

Science Journals Connector (OSTI)

......Proceedings of the 74th Ann. Internat. Mtg. Eur. Ass. of Geosc. and Eng. Expanded...integral equations. IEEE Trans. Image Process. (1991) 26(1):175-181. Krebs...Proceedings of the 74th Ann. Internat. Mtg. Eur. Ass. of Geosc. and Eng. Expanded......

P. Haffinger; A. Gisolf; P. M. van den Berg

2013-01-01T23:59:59.000Z

6

High-Resolution Aeromagnetic Survey to Image Shallow Faults,...  

Open Energy Info (EERE)

Valley Geothermal Area Regions (0) Retrieved from "http:en.openei.orgwindex.php?titleHigh-ResolutionAeromagneticSurveytoImageShallowFaults,DixieValleyGeothermalField...

7

High Resolution Imaging Science Experiment | 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 » High Resolution Imaging Science Experiment Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: High Resolution Imaging Science Experiment Author University of Arizona Published Publisher Not Provided, 2007 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for High Resolution Imaging Science Experiment Citation University of Arizona. High Resolution Imaging Science Experiment [Internet]. 2007. [cited 2013/09/27]. Available from: http://hirise.lpl.arizona.edu/HiBlog/tag/wavelength/ Retrieved from

8

Thin, Free-Standing Films For High Resolution Neutron Imaging.  

E-Print Network [OSTI]

??Thin, free-standing boro-phosphosilicate glass (BPSG) films were fabricated at PSU Nanofab to serve as prototype neutron converters for a proposed high resolution neutron imaging system… (more)

Trivelpiece, Cory

2010-01-01T23:59:59.000Z

9

Unsupervised Feature Learning for High-Resolution Satellite Image Classification  

SciTech Connect (OSTI)

The rich data provided by high-resolution satellite imagery allow us to directly model geospatial neighborhoods by understanding their spatial and structural patterns. In this paper we explore an unsupervised feature learning approach to model geospatial neighborhoods for classification purposes. While pixel and object based classification approaches are widely used for satellite image analysis, often these approaches exploit the high-fidelity image data in a limited way. In this paper we extract low-level features to characterize the local neighborhood patterns. We exploit the unlabeled feature measurements in a novel way to learn a set of basis functions to derive new features. The derived sparse feature representation obtained by encoding the measured features in terms of the learned basis function set yields superior classification performance. We applied our technique on two challenging image datasets: ORNL dataset representing one-meter spatial resolution satellite imagery representing five land-use categories and, UCMERCED dataset consisting of 21 different categories representing sub-meter resolution overhead imagery. Our results are highly promising and, in the case of UCMERCED dataset we outperform the best results obtained for this dataset. We show that our feature extraction and learning methods are highly effective in developing a detection system that can be used to automatically scan large-scale high-resolution satellite imagery for detecting large-facility.

Cheriyadat, Anil M [ORNL

2013-01-01T23:59:59.000Z

10

Final report: high resolution lensless 3D imaging of nanostructures with coherent x-rays  

SciTech Connect (OSTI)

Final report on the project "High resolution lensless 3D imaging of nanostructures with coherent x-rays"

Jacobsen, Chris

2014-12-07T23:59:59.000Z

11

Deep-towed High Resolution multichannel seismic imaging  

Science Journals Connector (OSTI)

Abstract High Resolution (220–1050 Hz) seismic acquisition performed in deep water using deep-towed systems provides unrivalled lateral resolution when compared to conventional surface seismic. The lateral resolution of these acquisitions is controlled by the width of the first Fresnel zone, taking advantage of their positions close to the sea bottom. No current existing deep towed equipment can benefit from seismic imaging processing techniques to improve this resolution as a consequence of positioning inaccuracies. The technological developments of a digital deep-towed multichannel streamer are presented with a particular attention to positioning: each hydrophone incorporates a pitch, roll and heading sensor in order to monitor the constant deformation of the streamer in operation. The sea trials took place in July 2013 in the Mediterranean Sea. Pre-stack depth migration applied to the deep-towed multichannel data illustrates the potential of this emerging methodology in terms of penetration (12 dB improvement in Signal/Noise) and lateral resolution (mean signal wavelength: 3 m) when compared with deep-towed single-channel acquisition.

B. Marsset; E. Menut; S. Ker; Y. Thomas; J.-P. Regnault; P. Leon; H. Martinossi; L. Artzner; D. Chenot; S. Dentrecolas; B. Spychalski; G. Mellier; N. Sultan

2014-01-01T23:59:59.000Z

12

High-resolution three-dimensional optical coherence tomography imaging of kidney microanatomy ex vivo  

E-Print Network [OSTI]

Optical coherence tomography (OCT) is an emerging medical imaging technology that enables high-resolution, noninvasive, cross-sectional imaging of microstructure in biological tissues in situ and in real time. When combined ...

Chen, Yu

13

Range imaging: a new method for high-resolution topographic measurements in small-and medium-  

E-Print Network [OSTI]

Range imaging: a new method for high-resolution topographic measurements in small- and medium is a useful complement or alternative to existing methods for high-resolution measurements in small- to medium has led to a dramatic increase in terrain information and opened up new opportunities for hydro- logic

Kirchner, James W.

14

High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley  

Open Energy Info (EERE)

Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada Abstract N/A Author V. J. S. Grauch Published U.S. Geological Survey, 2002 Report Number 02-384 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada Citation V. J. S. Grauch. 2002. High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada. (!) : U.S. Geological Survey. Report No.: 02-384. Retrieved from "http://en.openei.org/w/index.php?title=High-Resolution_Aeromagnetic_Survey_to_Image_Shallow_Faults,_Dixie_Valley_Geothermal_Field,_Nevada&oldid=682601"

15

D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for  

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

D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization The characterization of complex and/or hazardous facilities for the purposes of planning D&D projects can be excessively time consuming and present unacceptable hazards for personnel who enter or access the facility. D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization More Documents & Publications D&D Toolbox Project - Technology Demonstration of Fixatives Applied to Hot Cell Facilities via Remote Sprayer Platforms Above on the left is K-25, at Oak Ridge before and after the 844,000 sq-ft demolition. In addition, on the right: K Cooling Tower at Savannah River Site demolition.

16

D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for  

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

Robotic Deployment of High Resolution Laser Imaging for Robotic Deployment of High Resolution Laser Imaging for Characterization D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization The characterization of complex and/or hazardous facilities for the purposes of planning D&D projects can be excessively time consuming and present unacceptable hazards for personnel who enter or access the facility. D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization More Documents & Publications Above on the left is K-25, at Oak Ridge before and after the 844,000 sq-ft demolition. In addition, on the right: K Cooling Tower at Savannah River Site demolition. Deactivation & Decommissioning (D&D) Program Map DOE EM Project Experience & Lessons Learned for In Situ Decommissioning

17

DISLOCATION IMAGES IN HIGH RESOLUTION SCANNING ELECTRON MICROSCOPY  

E-Print Network [OSTI]

. There are several dislocation images in the back scattered mode which are distinctly of excess/defect contrast observed in the dark field : two seperate conditions cars. be found. There is a set of dislocations having

Paris-Sud XI, Université de

18

High resolution resonance ionization imaging detector and method  

DOE Patents [OSTI]

A resonance ionization imaging device (RIID) and method for imaging objects using the RIID are provided, the RIID system including a RIID cell containing an ionizable vapor including monoisotopic atoms or molecules, the cell being positioned to intercept scattered radiation of a resonance wavelength .lambda..sub.1 from the object which is to be detected or imaged, a laser source disposed to illuminate the RIID cell with laser radiation having a wavelength .lambda..sub.2 or wavelengths .lambda..sub.2, .lambda..sub.3 selected to ionize atoms in the cell that are in an excited state by virtue of having absorbed the scattered resonance laser radiation, and a luminescent screen at the back surface of the RIID cell which presents an image of the number and position of charged particles present in the RIID cell as a result of the ionization of the excited state atoms. The method of the invention further includes the step of initially illuminating the object to be detected or imaged with a laser having a wavelength selected such that the object will scatter laser radiation having the resonance wavelength .lambda..sub.1.

Winefordner, James D. (Gainesville, FL); Matveev, Oleg I. (Gainesville, FL); Smith, Benjamin W. (Gainesville, FL)

1999-01-01T23:59:59.000Z

19

Rectangular discrete radon transform for buildings extraction from high resolution satellite images  

Science Journals Connector (OSTI)

This paper presents a new approach titled Rectangular Discrete Radon Transform (RDRT) which is based on the generalization of the classical Radon transform to project the images with rectangular objects instead of straight lines. The RDRT was conceived ... Keywords: high resolution satellite image, rectangular buildings, rectangular discrete radon transform

Elouedi Ines; Hamouda Atef; Rojbani Hmida

2012-06-01T23:59:59.000Z

20

The Potential for Bayesian Compressive Sensing to Significantly Reduce Electron Dose in High Resolution STEM Images  

SciTech Connect (OSTI)

The use of high resolution imaging methods in the scanning transmission electron microscope (STEM) is limited in many cases by the sensitivity of the sample to the beam and the onset of electron beam damage (for example in the study of organic systems, in tomography and during in-situ experiments). To demonstrate that alternative strategies for image acquisition can help alleviate this beam damage issue, here we apply compressive sensing via Bayesian dictionary learning to high resolution STEM images. These experiments successively reduce the number of pixels in the image (thereby reducing the overall dose while maintaining the high resolution information) and show promising results for reconstructing images from this reduced set of randomly collected measurements. We show that this approach is valid for both atomic resolution images and nanometer resolution studies, such as those that might be used in tomography datasets, by applying the method to images of strontium titanate and zeolites. As STEM images are acquired pixel by pixel while the beam is scanned over the surface of the sample, these post acquisition manipulations of the images can, in principle, be directly implemented as a low-dose acquisition method with no change in the electron optics or alignment of the microscope itself.

Stevens, Andrew J.; Yang, Hao; Carin, Lawrence; Arslan, Ilke; Browning, Nigel D.

2014-02-11T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

HIGH-RESOLUTION LAND/ICE IMAGING USING SEASAT SCATTEROMETER MEASUREMENTS  

E-Print Network [OSTI]

scatterometers which would permit the method to produce 1-2 km resolution over land and ice. The highHIGH-RESOLUTION LAND/ICE IMAGING USING SEASAT SCATTEROMETER MEASUREMENTS D. G. Long*, P. T. Whiting by the scatterometer,is expected to significantly enhance the utility of sca.tteroineter data in various land, ice

Long, David G.

22

High resolution neutron imaging of water in the polymer electrolyte fuel cell membrane  

SciTech Connect (OSTI)

Water transport in the ionomeric membrane, typically Nafion{reg_sign}, has profound influence on the performance of the polymer electrolyte fuel cell, in terms of internal resistance and overall water balance. In this work, high resolution neutron imaging of the Nafion{reg_sign} membrane is presented in order to measure water content and through-plane gradients in situ under disparate temperature and humidification conditions.

Mukherjee, Partha P [Los Alamos National Laboratory; Makundan, Rangachary [Los Alamos National Laboratory; Spendelow, Jacob S [Los Alamos National Laboratory; Borup, Rodney L [Los Alamos National Laboratory; Hussey, D S [NIST; Jacobson, D L [NIST; Arif, M [NIST

2009-01-01T23:59:59.000Z

23

High resolution x-ray and gamma ray imaging using diffraction lenses with mechanically bent crystals  

DOE Patents [OSTI]

A method for high spatial resolution imaging of a plurality of sources of x-ray and gamma-ray radiation is provided. High quality mechanically bent diffracting crystals of 0.1 mm radial width are used for focusing the radiation and directing the radiation to an array of detectors which is used for analyzing their addition to collect data as to the location of the source of radiation. A computer is used for converting the data to an image. The invention also provides for the use of a multi-component high resolution detector array and for narrow source and detector apertures.

Smither, Robert K. (Hinsdale, IL)

2008-12-23T23:59:59.000Z

24

D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization  

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

Tech Stage: Demonstration D&D Toolbox: Project OR-071203, OR-071303; Deployed at SRS P Reactor Area Closure Project PBS SR-0040 The robotically deployed laser surveying system was demonstrated in the Purification room of SRS P-Reactor on September 24, 2008. Page 1 of 2 Savannah River Site South Carolina Michigan D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization Challenge The characterization of complex and/or hazardous facilities for the purposes of planning D&D projects can be excessively time consuming and present unacceptable hazards for personnel who enter or access the facility. Planners must know the condition of facilities which may have been abandoned in years past with little or no

25

A Curved Image-Plate Detector System for High-Resolution Synchrotron X-ray Diffraction  

SciTech Connect (OSTI)

The developed curved image plate (CIP) is a one-dimensional detector which simultaneously records high-resolution X-ray diffraction (XRD) patterns over a 38.7 2{theta} range. In addition, an on-site reader enables rapid extraction, transfer and storage of X-ray intensity information in {le}30 s, and further qualifies this detector to study kinetic processes in materials science. The CIP detector can detect and store X-ray intensity information linearly proportional to the incident photon flux over a dynamical range of about five orders of magnitude. The linearity and uniformity of the CIP detector response is not compromised in the unsaturated regions of the image plate, regardless of saturation in another region. The speed of XRD data acquisition together with excellent resolution afforded by the CIP detector is unique and opens up wide possibilities in materials research accessible through X-ray diffraction. This article presents details of the basic features, operation and performance of the CIP detector along with some examples of applications, including high-temperature XRD.

Sarin, P.; Haggerty, R; Yoon, W; Knapp, M; Berghaeuser, A; Zschack, P; Karapetrova, E; Yang, N; Kriven, W

2009-01-01T23:59:59.000Z

26

MAGNETIC RESONANCE ELECTRICAL IMPEDANCE TOMOGRAPHY (MR-EIT): A new technique for high resolution conductivity imaging  

E-Print Network [OSTI]

MAGNETIC RESONANCE ELECTRICAL IMPEDANCE TOMOGRAPHY (MR-EIT): A new technique for high resolution potentials and the magnetic fields produced by the probing current are measured. Surface potentials are measured by using conventional electrical impedance tomography techniques and high resolution magnetic

Eyüboðlu, Murat

27

High-Resolution X-ray Imaging of the Colliding Wind Shock in WR147  

E-Print Network [OSTI]

We analyze new high-resolution Chandra X-ray images of the Wolf-Rayet binary system WR147. This system contains a WN8 star with an early-type companion located 0.6'' to its north, and is the only known early-type binary with a separation on the sky large enough for the wind-wind collision between the stars to currently be resolved at X-ray energies. The 5 ksec Chandra HRC-I image provides the first direct evidence for spatially extended X-ray emission in an early-type binary system. The X-ray emission peaks close to the position of the radio bow shock and north of the WN8 star. A deeper X-ray image is needed to accurately determine the degree of spatial extension, to exactly align the X-ray and optical/radio frames, and to determine whether part of the detected X-ray emission arises in the individual stellar winds. Simulated X-ray images of the wind-wind collision have a FWHM consistent with the data, and maximum likelihood fits suggest that a deeper observation may also constrain the inclination and wind momentum ratio of this system. However, as the WR wind dominates the colliding wind X-ray emission it appears unlikely that the mass-loss rate and the terminal velocity of the companion wind can be separately determined from X-ray observations. We also note an inconsistency between numerical and analytical estimates of the X-ray luminosity ratio of the stronger and weaker wind components, and conclude that the analytical results are in error.

J. M. Pittard; I. R. Stevens; P. M. Williams; A. M. T. Pollock; S. L. Skinner; M. F. Corcoran; A. F. J. Moffat

2002-04-12T23:59:59.000Z

28

High-Resolution Radio Imaging of Gravitational Lensing Candidates in the 1 Jansky BL Lac Sample  

E-Print Network [OSTI]

While BL Lacertae objects are widely believed to be highly beamed, low-luminosity radio galaxies, many radio-selected BL Lacs have extended radio power levels and optical emission lines that are too luminous to be low-luminosity radio galaxies. Also, Stocke & Rector discovered an excess of MgII absorption systems along BL Lac sightlines compared to quasars, suggesting that gravitational lensing may be another means of creating the BL Lac phenomenon in some cases. We present a search for gravitationally-lensed BL Lacs with deep, high-resolution, two-frequency VLA radio maps of seven lensing candidates from the 1 Jansky BL Lac sample. We find that none of these objects are resolved into an Einstein ring like B 0218+357, nor do any show multiple images of the core. All of the lensing candidates that were resolved show a flat-spectrum core and very unusual, steep-spectrum extended morphology that is incompatible with a multiply lensed system. Thus, while these observations do not rule out microlensing, no macrolensing is observed.

T. A. Rector; J. T. Stocke

2003-02-19T23:59:59.000Z

29

The Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI): Wind and Temperature Observations from the Ionospheric Connection Explorer (ICON)  

Science Journals Connector (OSTI)

We describe the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI), an instrument designed to measure thermospheric wind and temperature as part of the...

Englert, Christoph R; Harlander, John Mark; Brown, Charles M; Stephan, Andrew W; Makela, Jonathan J; Marr, Kenneth D; Immel, Thomas J

30

High-resolution shear-wave reflection profiling to image offset in unconsolidated near-surface sediments  

E-Print Network [OSTI]

High-resolution shear-wave reflection profiling to image offset in unconsolidated near-surface sediments By Copyright 2014 Bevin L. Bailey Submitted to the Department of Geology and the Graduate Faculty of the University of Kansas... offset in unconsolidated near-surface sediments ________________________________ Chairperson Richard D. Miller Date approved: April 4th, 2014 iii Abstract S-wave reflection profiling has many theoretical...

Bailey, Bevin

2014-05-31T23:59:59.000Z

31

High-resolution 3-D refractive index imaging and Its biological applications  

E-Print Network [OSTI]

This thesis presents a theory of 3-D imaging in partially coherent light under a non-paraxial condition. The transmission cross-coefficient (TCC) has been used to characterize partially coherent imaging in a 2- D and 3-D ...

Sung, Yongjin

2011-01-01T23:59:59.000Z

32

Accurate model-based high resolution cardiac image reconstruction in dual source CT  

Science Journals Connector (OSTI)

Cardiac imaging represents one of the most challenging imaging problems, requiring high spatial and temporal resolutions along with good tissue contrast. One of the newest clinical cardiac CT scanners incorporates two source-detector pairs in order to ... Keywords: cardiac, dual source CT, iterative method, model-based imaging

Synho Do; Sanghee Cho; W. Clem Karl; Mannudeep K. Kalra; Thomas J. Brady; Homer Pien

2009-06-01T23:59:59.000Z

33

Two-dimensional Detector for High Resolution Soft X-ray Imaging  

SciTech Connect (OSTI)

A new two-dimensional (2D) detector for detecting soft X-ray (SX) images was developed. The detector has a scintillator plate to convert a SX image into a visible (VI) one, and a relay optics to magnify and detect the converted VI image. In advance of the fabrication of the detector, quantum efficiencies of scintillators were investigated. As a result, a Ce:LYSO single crystal on which Zr thin film was deposited was used as an image conversion plate. The spatial resolution of fabricated detector is 3.0 {mu}m, and the wavelength range which the detector has sensitivity is 30-6 nm region.

Ejima, Takeo; Ogasawara, Shodo; Hatano, Tadashi; Yanagihara, Mihiro; Yamamoto, Masaki [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University (Japan)

2010-06-23T23:59:59.000Z

34

High-resolution crosswell imaging of a west Texas carbonate reservoir. Part 1: Project summary and interpretation  

SciTech Connect (OSTI)

A carbon dioxide flood pilot is being conducted in a section of Chevron`s McElroy field in Crane County, west Texas. Prior to CO{sub 2} injection, two high-frequency crosswell seismic profiles were recorded to investigate the use of seismic profiling for high-resolution reservoir delineation and CO{sub 2} monitoring. These preinjection profiles provide the baseline for time-lapse monitoring. Profile {number_sign}1 was recorded between an injector well and an offset observation well at a nominal well-to-well distance of 184 ft (56 m). Profile {number_sign}2 was recorded between a producing well and the observation well at a nominal distance of 600 ft (183 m). The combination of traveltime tomography and stacked CDP reflection amplitudes demonstrates how high-frequency crosswell seismic data can be used to image both large and small scale heterogeneity between wells: transmission traveltime tomography is used to image the large scale velocity variations; CDP reflection imaging is then used to image smaller scale impedance heterogeneities. The results of this integrated study demonstrate (1) the use of crosswell seismic profiling to produce a high-resolution reservoir delineation and (2) the possibility for successful monitoring of CO{sub 2} in carbonate reservoirs. The crosswell data were acquired with a piezoelectric source and a multilevel hydrophone array. Both profiles, nearly 80,000 seismic traces, were recorded in approximately 80 hours using a new acquisition technique of shooting on-the-fly. This paper presents the overall project summary and interpretation of the results from the near-offset profile.

Harris, J.M.; Nolen-Hoeksema, R.C.; Van Schaack, M.; Lazaratos, S.K.; Rector, J.W. [Stanford Univ., CA (United States)] [Stanford Univ., CA (United States); Langan, R.T. [Chevron Petroleum Technology Co., La Habra, CA (United States)] [Chevron Petroleum Technology Co., La Habra, CA (United States); [Stanford Univ., CA (United States). Geophysics Dept.

1995-05-01T23:59:59.000Z

35

Development of a high-resolution gamma-ray imaging system with synthetic collimation.  

E-Print Network [OSTI]

??This work outlines the development of a multi-pinhole single-photon emission computed tomography (SPECT) system designed to produce a synthetic-collimator image of a small field of… (more)

Havelin, Ronan

2013-01-01T23:59:59.000Z

36

High Resolution/High Fidelity Seismic Imaging and Parameter Estimation for Geological Structure and Material Characterization  

SciTech Connect (OSTI)

In this project, we develop new theories and methods for multi-domain one-way wave-equation based propagators, and apply these techniques to seismic modeling, seismic imaging, seismic illumination and model parameter estimation in 3D complex environments. The major progress of this project includes: (1) The development of the dual-domain wave propagators. We continue to improve the one-way wave-equation based propagators. Our target is making propagators capable of handling more realistic velocity models. A wide-angle propagator for transversely isotropic media with vertically symmetric axis (VTI) has been developed for P-wave modeling and imaging. The resulting propagator is accurate for large velocity perturbations and wide propagation angles. The thin-slab propagator for one-way elastic-wave propagation is further improved. With the introduction of complex velocities, the quality factors Qp and Qs have been incorporated into the thin-slab propagator. The resulting viscoelastic thin-slab propagator can handle elastic-wave propagation in models with intrinsic attenuations. We apply this method to complex models for AVO modeling, random media characterization and frequency-dependent reflectivity simulation. (2) Exploring the Information in the Local Angle Domain. Traditionally, the local angle information can only be extracted using the ray-based method. We develop a wave-equation based technique to process the local angle domain information. The approach can avoid the singularity problem usually linked to the high-frequency asymptotic method. We successfully apply this technique to seismic illumination and the resulting method provides a practical tool for three-dimensional full-volume illumination analysis in complex structures. The directional illumination also provides information for angle-domain imaging corrections. (3) Elastic-Wave Imaging. We develop a multicomponent elastic migration method. The application of the multicomponent one-way elastic propagator and the wide-angle correction preserve more dynamic information carried by the elastic waves. The vector imaging condition solves the polarization problem of converted wave imaging. Both P-P and P-S images can be calculated. We also use converted waves to improve the image of steep sub-salt structures. The synthetic data for the SEG/EAGE salt model are migrated with a generalized screen algorithm and for the converted PSS-wave path. All the sub-salt faults are properly imaged.

Ru-Shan Wu, Xiao-Bi Xie, Thorne Lay

2005-06-06T23:59:59.000Z

37

High-resolution imaging of velocity-controlled molecular collisions using counterpropagating beams  

E-Print Network [OSTI]

We present ultrahigh-resolution measurements of state-to-state inelastic differential cross sections for NO-Ne and NO-Ar collisions, obtained by combining the Stark deceleration and velocity map imaging techniques. We show that for counterpropagating crossed beam geometries, the effect of the velocity spreads of the reagent beams on the angular resolution of the images is minimized. Futhermore, the counterpropagating geometry results in images that are symmetric with respect to the relative velocity vector. This allows for the use of inverse Abel transformation methods that enhance the resolution further. State-resolved diffraction oscillations in the differential cross sections are measured with an angular resolution approaching 0.3$^\\circ$. Distinct structures observed in the cross sections gauge the quality of recent \\emph{ab initio} potential energy surfaces for NO-rare gas atom collisions with unprecedented precision.

Vogels, Sjoerd N; von Zastrow, Alexander; Groenenboom, Gerrit C; van der Avoird, Ad; van de Meerakker, Sebastiaan Y T

2014-01-01T23:59:59.000Z

38

Supporting Online Material High resolution electroluminescent imaging of pressure distribution using a  

E-Print Network [OSTI]

modeling of basic mechanics and physics C: Devices fabrication process and hydrothermal growth of nanowires emitting intensity change with image acquisition and processing technologies. Figure S1 | Schematic diagram by hydrothermal methods. (Fig. S4) (3) Spacing is very important for the device, and there is an optimum spacing

Wang, Zhong L.

39

High-resolution chemical imaging of gold nanoparticles using hard x-ray ptychography  

SciTech Connect (OSTI)

We combine resonant scattering with (ptychographic) scanning coherent diffraction microscopy to determine the chemical state of gold nanoparticles with high spatial resolution. Ptychographic images of the sample are recorded for a series of energies around the gold L{sub 3} absorption edge. From these data, chemical information in the form of absorption and resonant scattering spectra is reconstructed at each location in the sample. For gold nanoparticles of about 100 nm diameter, a spatial resolution of about 20-30 nm is obtained. In the future, this microscopy approach will open the way to operando studies of heterogeneous catalysts on the nanometer scale.

Hoppe, R.; Patommel, J.; Schroer, C. G. [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany)] [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany); Reinhardt, J. [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany) [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany); Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg (Germany)] [Germany; Hofmann, G.; Grunwaldt, J.-D. [Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, D-76131 Karlsruhe (Germany)] [Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, D-76131 Karlsruhe (Germany); Damsgaard, C. D. [Center for Electron Nanoscopy and Department of Physics, Technical University of Denmark, DK-2800 Lyngby (Denmark)] [Center for Electron Nanoscopy and Department of Physics, Technical University of Denmark, DK-2800 Lyngby (Denmark); Wellenreuther, G.; Falkenberg, G. [Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg (Germany)] [Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg (Germany)

2013-05-20T23:59:59.000Z

40

A black phosphorus photo-detector for multispectral, high-resolution imaging  

E-Print Network [OSTI]

Among the different 2-dimensional inorganic materials with their unique electronic and optical properties, the layered semiconductor black phosphorus is currently intensely researched for its potential applications in electronics and optoelectronics. The band gap energy of the bulk is 0.3eV, however, it increases with decreasing layer number; to 1.5eV for a single layer. Therefore, a multi-layer black phosphorus device should, in principle, allow photo-detection over a broad spectral range with sufficient sensitivity for practical imaging applications. Here, we map the active area of a multi-layer black phosphorus photo-detector and we characterize responsivity and gain of the device in the visible ({\\lambda}_{VIS}=532nm) as well as the near-infrared ({\\lambda}_{IR}=1550nm) spectral domain. By using the same device as a point-like detector at the two test wavelengths, we acquire diffraction-limited images of structures that exhibit sub-micron feature sizes. The results demonstrate the usefulness of two-dimens...

Engel, Michael; Avouris, Phaedon

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Separating strain from composition in unit cell parameter maps obtained from aberration corrected high resolution transmission electron microscopy imaging  

SciTech Connect (OSTI)

Based on the evaluation of lattice parameter maps in aberration corrected high resolution transmission electron microscopy images, we propose a simple method that allows quantifying the composition and disorder of a semiconductor alloy at the unit cell scale with high accuracy. This is realized by considering, next to the out-of-plane, also the in-plane lattice parameter component allowing to separate the chemical composition from the strain field. Considering only the out-of-plane lattice parameter component not only yields large deviations from the true local alloy content but also carries the risk of identifying false ordering phenomena like formations of chains or platelets. Our method is demonstrated on image simulations of relaxed supercells, as well as on experimental images of an In{sub 0.20}Ga{sub 0.80}N quantum well. Principally, our approach is applicable to all epitaxially strained compounds in the form of quantum wells, free standing islands, quantum dots, or wires.

Schulz, T.; Remmele, T.; Korytov, M.; Markurt, T.; Albrecht, M. [Leibniz-Institut für Kristallzüchtung, Max-Born-Straße 2, 12489 Berlin (Germany); Duff, A.; Lymperakis, L.; Neugebauer, J. [Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, 40237 Düsseldorf (Germany); Chèze, C. [TopGaN Sp. z o.o., Sokolowska 29/37, 01-142 Warsaw (Poland); Skierbiszewski, C. [TopGaN Sp. z o.o., Sokolowska 29/37, 01-142 Warsaw (Poland); Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw (Poland)

2014-01-21T23:59:59.000Z

42

HIGH-RESOLUTION SATELLITE IMAGING OF THE 2004 TRANSIT OF VENUS AND ASYMMETRIES IN THE CYTHEREAN ATMOSPHERE  

SciTech Connect (OSTI)

This paper presents the only space-borne optical-imaging observations of the 2004 June 8 transit of Venus, the first such transit visible from Earth since AD 1882. The high-resolution, high-cadence satellite images we arranged from NASA's Transition Region and Coronal Explorer (TRACE) reveal the onset of visibility of Venus's atmosphere and give further information about the black-drop effect, whose causes we previously demonstrated from TRACE observations of a transit of Mercury. The atmosphere is gradually revealed before second contact and after third contact, resulting from the changing depth of atmospheric layers refracting the photospheric surface into the observer's direction. We use Venus Express observations to relate the atmospheric arcs seen during the transit to the atmospheric structure of Venus. Finally, we relate the transit images to current and future exoplanet observations, providing a sort of ground truth showing an analog in our solar system to effects observable only with light curves in other solar systems with the Kepler and CoRoT missions and ground-based exoplanet-transit observations.

Pasachoff, Jay M. [Williams College-Hopkins Observatory, 33 Lab Campus Drive, Williamstown, MA 01267 (United States); Schneider, Glenn [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Widemann, Thomas [Observatoire de Paris-LESIA, 92190 Meudon (France)

2011-04-15T23:59:59.000Z

43

Upgrades of the high resolution imaging x-ray crystal spectrometers on experimental advanced superconducting tokamak  

SciTech Connect (OSTI)

Two imaging x-ray crystal spectrometers, the so-called 'poloidal' and 'tangential' spectrometers, were recently implemented on experimental advanced superconducting tokamak (EAST) to provide spatially and temporally resolved impurity ion temperature (T{sub i}), electron temperature (T{sub e}) and rotation velocity profiles. They are derived from Doppler width of W line for Ti, the intensity ratio of Li-like satellites to W line for Te, and Doppler shift of W line for rotation. Each spectrometer originally consisted of a spherically curved crystal and a two-dimensional multi-wire proportional counter (MWPC) detector. Both spectrometers have now been upgraded. The layout of the tangential spectrometer was modified, since it had to be moved to a different port, and the spectrometer was equipped with two high count rate Pilatus detectors (Model 100 K) to overcome the count rate limitation of the MWPC and to improve its time resolution. The poloidal spectrometer was equipped with two spherically bent crystals to record the spectra of He-like and H-like argon simultaneously and side by side on the original MWPC. These upgrades are described, and new results from the latest EAST experimental campaign are presented.

Lu, B.; Wang, F.; Fu, J.; Li, Y.; Wan, B. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); Shi, Y. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); National Fusion Research Institute, 52 Eoeun-Dong, Yusung-Gu, Daejeon (Korea, Republic of); Bitter, M.; Hill, K. W. [Princeton Plasma Physics Laboratory, MS37-B332, Princeton, New Jersey 08543-0451 (United States); Lee, S. G. [National Fusion Research Institute, 52 Eoeun-Dong, Yusung-Gu, Daejeon (Korea, Republic of)

2012-10-15T23:59:59.000Z

44

Phys. Med. Biol. 43 (1998) 10011013. Printed in the UK PII: S0031-9155(98)90627-3 High-resolution 3D Bayesian image reconstruction using  

E-Print Network [OSTI]

-resolution 3D Bayesian image reconstruction using the microPET small-animal scanner Jinyi Qi, Richard M Leahy of high-resolution 3D images from the microPET small-animal scanner. Resolution recovery is achieved 2 mm when using an analytic 3D reprojection (3DRP) method with a ramp filter. These results also

Leahy, Richard M.

45

High resolution neutron imaging of water in the polymer electrolyte membrane  

SciTech Connect (OSTI)

To achieve a deeper understanding of water transport and performance issues associated with water management, we have conducted in situ water examinations to help understand the effects of components and operation. High Frequency Resistance (HFR), AC Impedance and neutron radiography were used to measure water content in operating fuel cells under various operating conditions. Variables examined include: sub-freezing conditions, inlet relative humidities, cell temperature, current density and response transients, different flow field orientations and different component materials (membranes, GDLs and MEAs). Quantification of the water within the membrane was made by neutron radiography after equilibration to different humidified gases, during fuel cell operation and in hydrogen pump mode. The water content was evaluated in bare Nafion{reg_sign} membranes as well as in MEAs operated in both fuel cell and H{sub 2} pump mode. These in situ imaging results allow measurement of the water content and gradients in the PEFC membrane and relate the membrane water transport characteristics to the fuel cell operation and performance under disparate materials and operational combinations. Flow geometry makes a large impact on MEA water content. Higher membrane water with counter flow was measured compared with co-flow for sub-saturated inlet RH's. This correlates to lower HFR and higher performance compared with co-flow. Higher anode stoichiometry helps remove water which accumulates in the anode channels and GDL material. Cell orientation was measured to affect both the water content and cell performance. While membrane water content was measured to be similar regardless of orientation, cells with the cathode on top show flooding and loss of performance compared with similarly operated cells with the anode on top. Transient fuel cell current measurements show a large degree of hysteresis in terms of membrane hydration as measured by HFR. Current step transients from 0.01 A cm{sup -2} to 0.68 A cm{sup -2} consistently show PEM wetting occurring within 5 to 20 sec. Whereas the PEM drying response to the reverse step transient of 0.68 A cm{sup -2} to 0.01 A cm{sup -2}, takes several minutes. The observed faster wetting response is due to reaction water being produced in the cathode and back diffusing into the membrane. The slower PEM drying is due to the water slowly being removed out of the wetted GDLs. This rate of removal of water and hence the PEM hydration level was found to be influenced strongly by the PTFE loadings in the GDL substrate and Microporous layer (MPL). The drying of the membrane is influenced by both the anode and cathode GDL PTFE loadings. Lower PTFE loading in the anode GDL leads to better membrane hydration probably due to the easier incorporation of water from the anode GDL into the membrane. Similarly a lower PTFE loading in the cathode GDL also results in better membrane hydration probably due to the better water retention properties (less hydrophobic) of this GDL. Fuel cells operated isothermal at sub-freezing temperatures show gradual cell performance decay over time and eventually drops to zero. AC impedance analysis indicates that losses are initially due to increasing charge transfer resistance. After time, the rate of decay accelerates rapidly due to mass transport limitations. High frequency resistance also increases over time and is a function of the initial membrane water content. These results indicate that catalyst layer ice formation is influenced strongly by the MEA and is responsible for the long-term degradation of fuel cells operated at sub-freezing temperatures. Water distribution measurements indicate that ice may be fonning mainly in the GDLs at -10 C but are concentrated in the catalyst layer at -20 C.

Spernjak, Dusan [Los Alamos National Laboratory; Mukundan, Rangachary [Los Alamos National Laboratory; Borup, Rodney L [Los Alamos National Laboratory; Spendelow, Jacob S [Los Alamos National Laboratory; Davey, John [Los Alamos National Laboratory; Fairweather, Joseph [Los Alamos National Laboratory; Mukherjee, Partha [ORNL

2010-01-01T23:59:59.000Z

46

Subsurface imaging with reverse vertical seismic profiles  

E-Print Network [OSTI]

This thesis presents imaging results from a 3D reverse vertical seismic profile (RVSP) dataset measured at a hydrocarbon bearing pinnacle reef in northern Michigan. The study presented many challenges in seismic data ...

Krasovec, Mary L. (Mary Lee), 1972-

2001-01-01T23:59:59.000Z

47

High-resolution shear-wave reflection profiling to image offset in unconsolidated near-surface sediments.  

E-Print Network [OSTI]

??S-wave reflection profiling has many theoretical advantages, when compared to P-wave profiling, such as high-resolution potential, greater sensitivities to lithologic changes and insensitivity to the… (more)

Bailey, Bevin

2014-01-01T23:59:59.000Z

48

Seeing inside chips and cells: High-resolution subsurface imaging of integrated circuits, quantum dots and subcellular structures  

E-Print Network [OSTI]

, Department of Physics, Boston University, 8 Saint Mary's Street, Boston, MA 02215, goldberg@bu.edu and Y. Leblebici, Swiss Federal Institute of Technology, Lausanne, Switzerland 35-word abstract: In this work we. Standard non-contact optical resolution is limited by diffraction to about half the wavelength of light

49

HIGH-RESOLUTION INFRARED IMAGING AND SPECTROSCOPY OF THE Z CANIS MAJORIS SYSTEM DURING QUIESCENCE AND OUTBURST  

SciTech Connect (OSTI)

We present adaptive optics photometry and spectra in the JHKL bands along with high spectral resolution K-band spectroscopy for each component of the Z Canis Majoris system. Our high angular resolution photometry of this very young ({approx}<1 Myr) binary, comprised of an FU Ori object and a Herbig Ae/Be star, was gathered shortly after the 2008 outburst while our high-resolution spectroscopy was gathered during a quiescent phase. Our photometry conclusively determines that the outburst was due solely to the embedded Herbig Ae/Be member, supporting results from earlier works, and that the optically visible FU Ori component decreased slightly ({approx}30%) in luminosity during the same period, consistent with previous works on the variability of FU Ori type systems. Further, our high-resolution K-band spectra definitively demonstrate that the 2.294 {mu}m CO absorption feature seen in composite spectra of the system is due solely to the FU Ori component, while a prominent CO emission feature at the same wavelength, long suspected to be associated with the innermost regions of a circumstellar accretion disk, can be assigned to the Herbig Ae/Be member. These findings clarify previous analyses of the origin of the CO emission in this complex system.

Hinkley, Sasha; Hillenbrand, Lynne; Crepp, Justin R. [Department of Astronomy, California Institute of Technology, 1200 E. California Blvd, MC 249-17, Pasadena, CA 91125 (United States); Oppenheimer, Ben R.; Zimmerman, Neil; Brenner, Douglas [Astrophysics Department, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024 (United States); Rice, Emily L. [Department of Engineering Science and Physics, College of Staten Island, City University of New York, 2800 Victory Bvld, Staten Island, NY 10314 (United States); Pueyo, Laurent [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Vasisht, Gautam; Roberts, Jennifer E.; Roberts, Lewis C. Jr.; Burruss, Rick; Wallace, J. Kent; Cady, Eric; Zhai, Chengxing [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 (United States); Kraus, Adam L. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138 (United States); Ireland, Michael J. [Department of Physics and Astronomy, Macquarie University, New South Wales, NSW 2109 (Australia); Beichman, Charles [NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA 91125 (United States); Dekany, Richard [Caltech Optical Observatories, California Institute of Technology, Pasadena, CA 91125 (United States); Parry, Ian R. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); and others

2013-01-20T23:59:59.000Z

50

High resolution scintillation detector with semiconductor readout  

DOE Patents [OSTI]

A novel high resolution scintillation detector array for use in radiation imaging such as high resolution Positron Emission Tomography (PET) which comprises one or more parallelepiped crystals with at least one long surface of each crystal being in intimate contact with a semiconductor photodetector such that photons generated within each crystal by gamma radiation passing therethrough is detected by the photodetector paired therewith.

Levin, Craig S. (Santa Monica, CA); Hoffman, Edward J. (Los Angeles, CA)

2000-01-01T23:59:59.000Z

51

Development of a High Resolution X-Ray Imaging Crystal Spectrometer for Measurement of Ion-Temperature and Rotation-Velocity Profiles in Fusion Energy Research Plasmas  

SciTech Connect (OSTI)

A new imaging high resolution x-ray crystal spectrometer (XCS) has been developed to measure continuous profiles of ion temperature and rotation velocity in fusion plasmas. Following proof-of-principle tests on the Alcator C-Mod tokamak and the NSTX spherical tokamak, and successful testing of a new silicon, pixilated detector with 1 MHz count rate capability per pixel, an imaging XCS is being designed to measure full profiles of Ti and v? on C-Mod. The imaging XCS design has also been adopted for ITER. Ion-temperature uncertainty and minimum measurable rotation velocity are calculated for the C-Mod spectrometer. The affects of x-ray and uclear-radiation background on the measurement uncertainties are calculated to predict performance on ITER.

Hill, K W; Broennimann, Ch; Eikenberry, E F; Ince-Cushman, A; Lee, S G; Rice, J E; Scott, S

2008-01-29T23:59:59.000Z

52

Design of a near-field coded aperture cameras for high-resolution medical and industrial gamma-ray imaging  

E-Print Network [OSTI]

Coded Aperture Imaging is a technique originally developed for X-ray astronomy, where typical imaging problems are characterized by far-field geometry and an object made of point sources distributed over a mainly dark ...

Accorsi, Roberto, 1971-

2001-01-01T23:59:59.000Z

53

Applicability of 2-D Time-Lapse High-Resolution Seismic Reflection Approach to Image Natural Salt-Dissolution and Subsidence in Central Kansas and Improved Post-Processed Vibroseis Data Characteristics  

E-Print Network [OSTI]

The effectiveness of 2-D time-lapse imaging for monitoring natural dissolution of the Hutchinson Salt in eastern Reno County, Kansas was shown to be restricted when comparing high-resolution seismic reflection data acquired ...

Rice, Daniel

2009-01-12T23:59:59.000Z

54

High resolution biomedical imaging system with direct detection of x-rays via a charge coupled device  

DOE Patents [OSTI]

An imaging system is provided for direct detection of x-rays from an irradiated biological tissue. The imaging system includes an energy source for emitting x-rays toward the biological tissue and a charge coupled device (CCD) located immediately adjacent the biological tissue and arranged transverse to the direction of irradiation along which the x-rays travel. The CCD directly receives and detects the x-rays after passing through the biological tissue. The CCD is divided into a matrix of cells, each of which individually stores a count of x-rays directly detected by the cell. The imaging system further includes a pattern generator electrically coupled to the CCD for reading a count from each cell. A display device is provided for displaying an image representative of the count read by the pattern generator from the cells of the CCD. 13 figs.

Atac, M.; McKay, T.A.

1998-04-21T23:59:59.000Z

55

High resolution biomedical imaging system with direct detection of x-rays via a charge coupled device  

DOE Patents [OSTI]

An imaging system is provided for direct detection of x-rays from an irradiated biological tissue. The imaging system includes an energy source for emitting x-rays toward the biological tissue and a charge coupled device (CCD) located immediately adjacent the biological tissue and arranged transverse to the direction of irradiation along which the x-rays travel. The CCD directly receives and detects the x-rays after passing through the biological tissue. The CCD is divided into a matrix of cells, each of which individually stores a count of x-rays directly detected by the cell. The imaging system further includes a pattern generator electrically coupled to the CCD for reading a count from each cell. A display device is provided for displaying an image representative of the count read by the pattern generator from the cells of the CCD.

Atac, Muzaffer (Wheaton, IL); McKay, Timothy A. (Ann Arbor, MI)

1998-01-01T23:59:59.000Z

56

Imaging and 3D Elemental Characterization of Intact Bacterial Spores by High-Resolution Secondary Ion Mass Spectrometry  

Science Journals Connector (OSTI)

We present a quantitative, imaging technique based on nanometer-scale secondary ion mass spectrometry for mapping the 3D elemental distribution present in an individual micrometer-sized Bacillus spore. We use depth profile analysis to access the 3D ...

Sutapa Ghosal; Stewart J. Fallon; Terrance J. Leighton; Katherine E. Wheeler; Michael J. Kristo; Ian D. Hutcheon; Peter K. Weber

2008-06-26T23:59:59.000Z

57

High resolution data acquisition  

DOE Patents [OSTI]

A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock (38) pulse train (37) and analog circuitry (44) for generating a triangular wave (46) synchronously with the pulse train (37). The triangular wave (46) has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter (18, 32) forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter (26) counts the clock pulse train (37) during the interval to form a gross event interval time. A computer (52) then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

Thornton, Glenn W. (Los Alamos, NM); Fuller, Kenneth R. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

58

High resolution data acquisition  

DOE Patents [OSTI]

A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock, pulse train, and analog circuitry for generating a triangular wave synchronously with the pulse train (as seen in diagram on patent). The triangular wave has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter counts the clock pulse train during the interval to form a gross event interval time. A computer then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

Thornton, G.W.; Fuller, K.R.

1993-04-06T23:59:59.000Z

59

Simultaneous High-Resolution 2-Dimensional Spatial and 1-Dimensional Picosecond Streaked X-ray Pinhole Imaging  

SciTech Connect (OSTI)

A Kentech x-ray streak camera was run at the LLNL Compact Multipulse Terawatt (COMET) laser to record simultaneous space- and time-resolved measurements of picosecond laser-produced plasmas. Four different x-ray energy channels were monitored using broad-band filters to record the time history of Cu targets heated at irradiances of 10{sup 16} - 10{sup 19} W/cm{sup 2}. Through the Cu filter channel, a time-resolution below 3ps was obtained. Additionally, an array of 10 {micro}m diameter pinholes was placed in front of the camera to produce multiple time-resolved x-ray images on the photocathode and time-integrated images on the phosphor with 10 and 15 times magnification, respectively, with spatial resolution of <13 {micro}m.

Steel, A B; Nagel, S R; Dunn, J; Baldis, H A

2012-05-03T23:59:59.000Z

60

Y High-Resolution  

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

Y Y High-Resolution . __ DO NOT M I C PET COVER for medical science studies Lawrence Berkeley Laboratory University of California September 1989 DlSTRlBUTlGN OF THIS DOCUMENT IS U#LIIY/ITEE Acknowledgments This booklet was prepared under the sponsorship of the U.S. Department of Energy Office of Health Effects Research, the National Institutes of Health, and the Lawrence Berkeley Laboratory's Research Medicine and Radiation Biophysics Division. We thank Sarah Cahn and Douglas Vaughan for coordination of this booklet. esolution PET for Medical Science Studies Thomas F. Budinger Stephen E. Derenzo Ronald H. Huesman William J. Jagust Peter E. Valk CONTENTS A PET Primer Positron Emission Tomography: Evolution of a Technology 7 PET Theory: Emission, Detection, and Reconstruction

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

High resolution vital fluorescence imaging of tumor microanatomy for surgical margin assessment Jenna Mueller1, Nimmi Ramanujam1, Jeff Mito3, Zachary Harmany2, Stephanie Kennedy1, Joseph Geradts4, David Kirsch3, Rebecca Willett2, J. Quincy Brown1  

E-Print Network [OSTI]

in a haystack 10 20 30 40 0 0.05 0.1 0.15 0.2 RelativeFrequency Area (cm2 ) Touch- Frozen section Optical 5% Entire margin Depth Surface > 2 mm 1­ care) Yes Method Touch prep Frozen Section Area Examined 5% EntireHigh resolution vital fluorescence imaging of tumor microanatomy for surgical margin assessment

Ramanujam, Nimmi

62

High-resolution single photon planar and spect imaging of brain and neck employing a system of two co-registered opposed gamma imaging heads  

DOE Patents [OSTI]

A compact, mobile, dedicated SPECT brain imager that can be easily moved to the patient to provide in-situ imaging, especially when the patient cannot be moved to the Nuclear Medicine imaging center. As a result of the widespread availability of single photon labeled biomarkers, the SPECT brain imager can be used in many locations, including remote locations away from medical centers. The SPECT imager improves the detection of gamma emission from the patient's head and neck area with a large field of view. Two identical lightweight gamma imaging detector heads are mounted to a rotating gantry and precisely mechanically co-registered to each other at 180 degrees. A unique imaging algorithm combines the co-registered images from the detector heads and provides several SPECT tomographic reconstructions of the imaged object thereby improving the diagnostic quality especially in the case of imaging requiring higher spatial resolution and sensitivity at the same time.

Majewski, Stanislaw (Yorktown, VA); Proffitt, James (Newport News, VA)

2011-12-06T23:59:59.000Z

63

High resolution time interval meter  

DOE Patents [OSTI]

Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

Martin, A.D.

1986-05-09T23:59:59.000Z

64

BazookaSPECT: A Low-Cost Approach to High-Resolution, Single-Photon Imaging Using Columnar Scintillators and Image Intensifiers  

E-Print Network [OSTI]

-photon counting gamma-ray detector based on an image intensifier optically coupled to a low-cost CCD. Typically and allowing for a customizable imaging system. Operating in photon-counting mode, individual gamma-ray functioning as a gamma-ray microscope, (b) white-light microscope image of four 111 In oxine source beads, (c

Arizona, University of

65

Mapping Subsurface CO2 Migration | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Mapping Subsurface CO2 Migration Mapping Subsurface CO2 Migration Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) News & Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: sc.bes@science.doe.gov More Information » January 2013 Mapping Subsurface CO2 Migration New computational technique creates high resolution maps of subsurface CO2 after geologic sequestration. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Sanjay Srinivasan, UT-Austin High resolution inverted seismic images of CO2 migration at the Cranfield,

66

3-D GPR data analysis for high-resolution imaging of shallow subsurface faults: the Mt Vettore case study (Central Apennines, Italy)  

Science Journals Connector (OSTI)

......2001; Bano et-al. 2002; Liberty et-al. 2003; Slater Niemi...urban areas: the Georisc-NZ project in Wellington, New Zealand...2004) 123:111-125. Liberty L.M. , Hemphill-Haley...Source Geospatial Foundation Project. Electronic document Available......

Maurizio Ercoli; Cristina Pauselli; Alessandro Frigeri; Emanuele Forte; Costanzo Federico

2014-01-01T23:59:59.000Z

67

Using high-resolution displays for high-resolution cardiac data  

Science Journals Connector (OSTI)

...builds on the appreciation that medical interventions need to be tailored...disease. Increasingly detailed medical imaging data require new tools...These tools need to support medical decision-making in real time...operation under normal room lighting. A broad overview of high-resolution...

2009-01-01T23:59:59.000Z

68

Autonomous microexplosives subsurface tracing system final report.  

SciTech Connect (OSTI)

The objective of the autonomous micro-explosive subsurface tracing system is to image the location and geometry of hydraulically induced fractures in subsurface petroleum reservoirs. This system is based on the insertion of a swarm of autonomous micro-explosive packages during the fracturing process, with subsequent triggering of the energetic material to create an array of micro-seismic sources that can be detected and analyzed using existing seismic receiver arrays and analysis software. The project included investigations of energetic mixtures, triggering systems, package size and shape, and seismic output. Given the current absence of any technology capable of such high resolution mapping of subsurface structures, this technology has the potential for major impact on petroleum industry, which spends approximately $1 billion dollar per year on hydraulic fracturing operations in the United States alone.

Engler, Bruce Phillip; Nogan, John; Melof, Brian Matthew; Uhl, James Eugene; Dulleck, George R., Jr.; Ingram, Brian V.; Grubelich, Mark Charles; Rivas, Raul R.; Cooper, Paul W.; Warpinski, Norman Raymond; Kravitz, Stanley H.

2004-04-01T23:59:59.000Z

69

High resolution, high speed ultrahigh vacuum microscopy  

SciTech Connect (OSTI)

The history and future of transmission electron microscopy (TEM) is discussed as it refers to the eventual development of instruments and techniques applicable to the real time in situ investigation of surface processes with high resolution. To reach this objective, it was necessary to transform conventional high resolution instruments so that an ultrahigh vacuum (UHV) environment at the sample site was created, that access to the sample by various in situ sample modification procedures was provided, and that in situ sample exchanges with other integrated surface analytical systems became possible. Furthermore, high resolution image acquisition systems had to be developed to take advantage of the high speed imaging capabilities of projection imaging microscopes. These changes to conventional electron microscopy and its uses were slowly realized in a few international laboratories over a period of almost 40 years by a relatively small number of researchers crucially interested in advancing the state of the art of electron microscopy and its applications to diverse areas of interest; often concentrating on the nucleation, growth, and properties of thin films on well defined material surfaces. A part of this review is dedicated to the recognition of the major contributions to surface and thin film science by these pioneers. Finally, some of the important current developments in aberration corrected electron optics and eventual adaptations to in situ UHV microscopy are discussed. As a result of all the path breaking developments that have led to today's highly sophisticated UHV-TEM systems, integrated fundamental studies are now possible that combine many traditional surface science approaches. Combined investigations to date have involved in situ and ex situ surface microscopies such as scanning tunneling microscopy/atomic force microscopy, scanning Auger microscopy, and photoemission electron microscopy, and area-integrating techniques such as x-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, Auger electron spectroscopy, low-energy electron diffraction, temperature programmed desorption, high-resolution electron energy-loss and Fourier-transform infrared spectroscopies, and others. Material systems ranging from atomic layers of metals and semiconductors to biology related depositions are being investigated. In the case of biological materials, however, strict limitations to high-resolution applications are imposed by electron radiation damage considerations.

Poppa, Helmut [National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2004-09-01T23:59:59.000Z

70

CONSTRUCTING A WISE HIGH RESOLUTION GALAXY ATLAS  

SciTech Connect (OSTI)

After eight months of continuous observations, the Wide-field Infrared Survey Explorer (WISE) mapped the entire sky at 3.4 {mu}m, 4.6 {mu}m, 12 {mu}m, and 22 {mu}m. We have begun a dedicated WISE High Resolution Galaxy Atlas project to fully characterize large, nearby galaxies and produce a legacy image atlas and source catalog. Here we summarize the deconvolution techniques used to significantly improve the spatial resolution of WISE imaging, specifically designed to study the internal anatomy of nearby galaxies. As a case study, we present results for the galaxy NGC 1566, comparing the WISE enhanced-resolution image processing to that of Spitzer, Galaxy Evolution Explorer, and ground-based imaging. This is the first paper in a two-part series; results for a larger sample of nearby galaxies are presented in the second paper.

Jarrett, T. H.; Masci, F.; Tsai, C. W.; Fowler, J. [Infrared Processing and Analysis Center (IPAC), California Institute of Technology, Pasadena, CA 91125 (United States); Petty, S.; Lake, S.; Wright, E. [Physics and Astronomy Department, University of California, Los Angeles, CA 90095 (United States); Cluver, M. [Australian Astronomical Observatory, P.O. Box 296, Epping, NSW 1710 (Australia); Assef, Roberto J.; Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 169-221, Pasadena, CA 91109 (United States); Benford, D. [NASA Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States); Blain, A. [Department of Physics and Astronomy, University of Leicester, LE1 7RH Leicester (United Kingdom); Bridge, C.; Neill, James D. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Donoso, E. [Spitzer Science Center, IPAC, California Institute of Technology, Pasadena, CA 91125 (United States); Koribalski, B. [CSIRO Astronomy and Space Science, Australia Telescope National Facility (ATNF), P.O. Box 76, Epping, NSW 1710 (Australia); Seibert, M. [Observatories of the Carnegie Insititution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Sheth, K. [NASA Postdoctoral Program Fellow. (United States); Stanford, S., E-mail: jarrett@ipac.caltech.edu [Department of Physics, University of California, One Shields Avenue, Davis, CA 95616 (United States)

2012-08-15T23:59:59.000Z

71

Enhancements to and Characterization of the Very Early Time Electromagnetic (VETEM) Prototype Instrument and Applications to Shallow Subsurface Imaging at Sites in the DOE Complex - Final Report  

SciTech Connect (OSTI)

Field tests and deployments of VETEM is a flexible and highly effective new system for electromagnetic imaging that offers significant new 3D electromagnetic imaging capabilities in the shallow subsurface. Important new numerical modeling techniques have been produced, which are applicable to electromagnetic subsurface imaging, and suggest further research and development. In addition, this research has also produced a flexible, fast, and fully functional prototype VETEM system that has produced some remarkable subsurface images, has bridged the gap between pure research and applications, and is now available for use at DOE sites that have shallow subsurface imaging needs.

Wright, D.L.; Chew, W.C.

2000-12-01T23:59:59.000Z

72

Magnetoacoustic tomography with magnetic induction for high-resolution bioimepedance imaging through vector source reconstruction under the static field of MRI magnet  

SciTech Connect (OSTI)

Purpose: Magnetoacoustic tomography with magnetic induction (MAT-MI) is an imaging modality to reconstruct the electrical conductivity of biological tissue based on the acoustic measurements of Lorentz force induced tissue vibration. This study presents the feasibility of the authors' new MAT-MI system and vector source imaging algorithm to perform a complete reconstruction of the conductivity distribution of real biological tissues with ultrasound spatial resolution. Methods: In the present study, using ultrasound beamformation, imaging point spread functions are designed to reconstruct the induced vector source in the object which is used to estimate the object conductivity distribution. Both numerical studies and phantom experiments are performed to demonstrate the merits of the proposed method. Also, through the numerical simulations, the full width half maximum of the imaging point spread function is calculated to estimate of the spatial resolution. The tissue phantom experiments are performed with a MAT-MI imaging system in the static field of a 9.4 T magnetic resonance imaging magnet. Results: The image reconstruction through vector beamformation in the numerical and experimental studies gives a reliable estimate of the conductivity distribution in the object with a ?1.5 mm spatial resolution corresponding to the imaging system frequency of 500 kHz ultrasound. In addition, the experiment results suggest that MAT-MI under high static magnetic field environment is able to reconstruct images of tissue-mimicking gel phantoms and real tissue samples with reliable conductivity contrast. Conclusions: The results demonstrate that MAT-MI is able to image the electrical conductivity properties of biological tissues with better than 2 mm spatial resolution at 500 kHz, and the imaging with MAT-MI under a high static magnetic field environment is able to provide improved imaging contrast for biological tissue conductivity reconstruction.

Mariappan, Leo; Hu, Gang [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 (United States)] [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 (United States); He, Bin, E-mail: binhe@umn.edu [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 and Institute of Engineering in Medicine, University of Minnesota, Minnesota 55455 (United States)] [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 and Institute of Engineering in Medicine, University of Minnesota, Minnesota 55455 (United States)

2014-02-15T23:59:59.000Z

73

Development of a high-frame-rate high-resolution particle image velocimetry system and applications to the characterization of synthetic jet actuators  

E-Print Network [OSTI]

to 3,000 frames per second and a maximum image resolution of 512 by 512 pixels. The performance of these systems was demonstrated by utilizing them to experimentally characterize the flowfield generated by a synthetic jet actuator, operating at a...

Gilarranz, Jose Luis

2012-06-07T23:59:59.000Z

74

Enhanced High Resolution RBS System  

SciTech Connect (OSTI)

Improvements in full spectrum resolution with the second NEC high resolution RBS system are summarized. Results for 50 A ring TiN/HfO films on Si yielding energy resolution on the order of 1 keV are also presented. Detector enhancements include improved pulse processing electronics, upgraded shielding for the MCP/RAE detector, and reduced noise generated from pumping. Energy resolution measurements on spectra front edge coupled with calculations using 0.4mStr solid angle show that beam energy spread at 400 KeV from the Pelletron registered accelerator is less than 100 eV. To improve user throughput, magnet control has been added to the automatic data collection. Depth profiles derived from experimental data are discussed. For the thin films profiled, depth resolutions were on the Angstrom level with the non-linear energy/channel conversions ranging from 100 to 200 eV.

Pollock, Thomas J.; Hass, James A.; Klody, George M. [National Electrostatics Corp., Middleton, Wisconsin, U. S. A. 53562-0310 (United States)

2011-06-01T23:59:59.000Z

75

New Insights to the Sawtooth Oscillation (m/n=1/1 mode) in Hot Plasmas based on High Resolution 2-D Images of Te Fluctuations  

SciTech Connect (OSTI)

Two dimensional (2-D) images of electron temperature fluctuations with high temporal and spatial resolution have been employed to study the sawtooth oscillation (m/n=1/1 mode) in Toroidal EXperiment for Technology Oriented Research (TEXTOR) tokamak plasmas. 2-D imaging data revealed new physics which were not available in previous studies based on the 1-D electron temperature measurement and X-ray tomography. Review of the physics of the sawtooth oscillation is given by comparative studies with prominent theoretical models suggest that a new physics paradigm is needed to describe the reconnection physics of the sawtooth oscillation. The new insights are: A pressure driven instability (not a ballooning mode) leads to the X-point reconnection process. The reconnection process is identified as a random 3-D local reconnection process with a helical structure. The reconnection time scale is similar for different types of sawtooth oscillation ("kink" and tearing type) and is significantly faster than the resistive time scale. Heat flow from the core to the outside of the inversion radius during the reconnection process is highly collective rather than stochastic.

H.K. Park, N.C. Luhmann, Jr, A.J.H. Donné, C.W. Domier, T. Munsat, M.J. Van de Pol, and the TEXTOR Team

2007-11-26T23:59:59.000Z

76

TESTING THE HYPOTHESIS THAT METHANOL MASER RINGS TRACE CIRCUMSTELLAR DISKS: HIGH-RESOLUTION NEAR-INFRARED AND MID-INFRARED IMAGING  

SciTech Connect (OSTI)

Milliarcsecond very long baseline interferometry maps of regions containing 6.7 GHz methanol maser emission have lead to the recent discovery of ring-like distributions of maser spots and the plausible hypothesis that they may be tracing circumstellar disks around forming high-mass stars. We aimed to test this hypothesis by imaging these regions in the near- and mid-infrared at high spatial resolution and compare the observed emission to the expected infrared morphologies as inferred from the geometries of the maser rings. In the near-infrared we used the Gemini North adaptive optics system of ALTAIR/NIRI, while in the mid-infrared we used the combination of the Gemini South instrument T-ReCS and super-resolution techniques. Resultant images had a resolution of {approx}150 mas in both the near-infrared and mid-infrared. We discuss the expected distribution of circumstellar material around young and massive accreting (proto)stars and what infrared emission geometries would be expected for the different maser ring orientations under the assumption that the masers are coming from within circumstellar disks. Based upon the observed infrared emission geometries for the four targets in our sample and the results of spectral energy distribution modeling of the massive young stellar objects associated with the maser rings, we do not find compelling evidence in support of the hypothesis that methanol masers rings reside in circumstellar disks.

De Buizer, James M. [Stratospheric Observatory for Infrared Astronomy-USRA, NASA Ames Research Center, MS N232-12, Moffett Field, CA 94035 (United States); Bartkiewicz, Anna; Szymczak, Marian, E-mail: jdebuizer@sofia.usra.edu [Torun Centre for Astronomy, Nicolaus Copernicus University, Gagarina 11, 87-100 Torun (Poland)

2012-08-01T23:59:59.000Z

77

Application of PILATUS II Detector Modules for High Resolution X-Ray Imaging Crystal Spectrometers on the Alcator C-Mod Tokamak  

SciTech Connect (OSTI)

A new type of X-ray imaging crystal spectrometer for Doppler measurements of the radial profiles of the ion temperature and plasma rotation velocity in tokamak plasmas is presently being developed in a collaboration between various laboratories. The spectrometer will consist of a spherically bent crystal and a two-dimensional position sensitive detector; and it will record temporally and spatially resolved X-ray line spectra from highly-charged ions. The detector must satisfy challenging requirements with respect to count rate and spatial resolution. The paper presents the results from a recent test of a PILATUS II detector module on Alcator C-Mod, which demonstrate that the PILATUS II detector modules will satisfy these requirements.

M.L. Bitter, Ch. Borennimann, E.F. Eikenberry, K.W. Hill, A. Ince-Chushman, S.G. Lee, J.E. Rice, and S. Scott.

2007-07-23T23:59:59.000Z

78

Testing Competing High-Resolution Precipitation Forecasts  

E-Print Network [OSTI]

Testing Competing High-Resolution Precipitation Forecasts Eric Gilleland Research Prediction Comparison Test D1 D2 D = D1 ­ D2 copyright NCAR 2013 Loss Differential Field #12;Spatial Prediction Comparison Test Introduced by Hering and Genton

Gilleland, Eric

79

Ultra-High Resolution Electron Microscopy for Catalyst Characterizatio...  

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

Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-High Resolution Electron Microscopy for Catalyst Characterization 2011 DOE Hydrogen and Fuel Cells...

80

Ultra-high Resolution Electron Microscopy for Catalyst Characterizatio...  

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

high Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst Characterization 2009 DOE Hydrogen Program and Vehicle...

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Ultra-High Resolution Electron Microscopy for Catalyst Characterizatio...  

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

High Resolution Electron Microscopy for Catalyst Characterization Ultra-High Resolution Electron Microscopy for Catalyst Characterization 2010 DOE Vehicle Technologies and Hydrogen...

82

Sandia National Laboratories: High-Resolution Computational Algorithms...  

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

WindHigh-Resolution Computational Algorithms for Simulating Offshore Wind Farms High-Resolution Computational Algorithms for Simulating Offshore Wind Farms This Sandia National...

83

Accelerated High-Resolution Differential Ion Mobility Separations...  

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

High-Resolution Differential Ion Mobility Separations Using Hydrogen. Accelerated High-Resolution Differential Ion Mobility Separations Using Hydrogen. Abstract: The resolving...

84

Applications of High-Resolution Electrospray Ionization Mass...  

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

High-Resolution Electrospray Ionization Mass Spectrometry to Measurements of Average Oxygen to Carbon Ratios in Applications of High-Resolution Electrospray Ionization Mass...

85

High Resolution and Low-Temperature Photoelectron Spectroscopy...  

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

High Resolution and Low-Temperature Photoelectron Spectroscopy of an Oxygen-Linked Fullerene Dimer Dianion: C120O2-. High Resolution and Low-Temperature Photoelectron Spectroscopy...

86

Merging high resolution geophysical and geochemical surveys to...  

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

high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon Merging high resolution geophysical and geochemical surveys to reduce...

87

High resolution collimator system for X-ray detector  

DOE Patents [OSTI]

High resolution in an X-ray computerized tomography (CT) inspection system is achieved by using a collimator/detector combination to limit the beam width of the X-ray beam incident on a detector element to the desired resolution width. In a detector such as a high pressure Xenon detector array, a narrow tapered collimator is provided above a wide detector element. The collimator slits have any desired width, as small as a few mils at the top, the slit width is easily controlled, and they are fabricated on standard machines. The slit length determines the slice thickness of the CT image.

Eberhard, Jeffrey W. (Schenectady, NY); Cain, Dallas E. (Scotia, NY)

1987-01-01T23:59:59.000Z

88

A High Resolution Scale-of-four  

DOE R&D Accomplishments [OSTI]

A high resolution scale-of-four has been developed to be used in conjunction with the nuclear particle detection devices in applications where the counting rate is unusually high. Specifically, it is intended to precede the commercially available medium resolution scaling circuits and so decrease the resolving time of the counting system. The circuit will function reliably on continuously recurring pulses separated by less than 0.1 microseconds. It will resolve two pulses (occurring at a moderate repetition rate) which are spaced at 0.04 microseconds. A five-volt input signal is sufficient to actuate the device.

Fitch, V.

1949-08-25T23:59:59.000Z

89

High-Resolution PET Detector. Final report  

SciTech Connect (OSTI)

The objective of this project was to develop an understanding of the limits of performance for a high resolution PET detector using an approach based on continuous scintillation crystals rather than pixelated crystals. The overall goal was to design a high-resolution detector, which requires both high spatial resolution and high sensitivity for 511 keV gammas. Continuous scintillation detectors (Anger cameras) have been used extensively for both single-photon and PET scanners, however, these instruments were based on NaI(Tl) scintillators using relatively large, individual photo-multipliers. In this project we investigated the potential of this type of detector technology to achieve higher spatial resolution through the use of improved scintillator materials and photo-sensors, and modification of the detector surface to optimize the light response function.We achieved an average spatial resolution of 3-mm for a 25-mm thick, LYSO continuous detector using a maximum likelihood position algorithm and shallow slots cut into the entrance surface.

Karp, Joel

2014-03-26T23:59:59.000Z

90

Non-Destructive Testing of Subsurface Infrastructure using Induced Polarization and Electrical Resistivity Imaging  

E-Print Network [OSTI]

critical component of the assessment. While this issue is not new, current techniques are typically invasive or costly. This research explores the feasibility and effectiveness of induced polarization (IP) and electrical resistivity imaging (ERI), near...

Tucker, Stacey Elizabeth

2013-07-05T23:59:59.000Z

91

Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard...  

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

EPS Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light....

92

Tomography and High-Resolution Electron Microscopy Study of Surfaces...  

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

Tomography and High-Resolution Electron Microscopy Study of Surfaces and Porosity in a Plate-Like ?-Al2O3. Tomography and High-Resolution Electron Microscopy Study of...

93

Computational methods for improving the resolution of subsurface seismic images. Progress report, September 15, 1991--September 14, 1993  

SciTech Connect (OSTI)

Our interactive modeling for Gaussian beam modeling in two-dimensional, triangulated complex geologic structure, has been generalized to include transmission losses at interfaces, and density and Q-characterization of attenuation in layers. Also, multiple reflections and the option to model data from VSP acquisition geometry have been included. Shortcomings when the structure contains first-order discontinuities, however, limit the full geologic complexity that presently can be modeled by the Gaussian beam method. Other studies of wave filtering that arises for waves propagating nearly parallel to bedding reveal the importance of tunneling evanescent filtering on the propagating wavelet. Likewise, for reflections from steep interfaces, we have developed a dip-divergence correction to compensate for shortcomings in the conventional divergence correction for energy spreading. A new direction this past year, which we will be pursuing in the year ahead is analysis of errors in migration and dip-moveout (DMO) that arise when conventional imaging processing, which ignores anisotropy, is applied to data acquired where the subsurface is transversely isotropic. We are also developing approaches for taking anisotropy into account in these important imaging processes. Similarly, we have developed an efficient approach to performing DMO on P-SV-mode-converted data. Our interests in taking anisotropy into account have led us to study the importance of anisotropy in the overburden on reflection amplitude variations with offset (AVO).

Larner, K.; Hale, D.; Bleistein, N.; Cohen, J.

1993-05-01T23:59:59.000Z

94

Current Status of High Resolution Column Technology for Gas Chromatography  

Science Journals Connector (OSTI)

......work in high-resolution gas-solid chromatography...developments in high- resolution gas chromatographic column...illary or high-resolution gas chromatography. Of these...column material is its high cost compared to glass columns...re sulting from column production, and requires deactivation......

Mary A. Kaiser; Matthew S. Klee

1986-09-01T23:59:59.000Z

95

High Resolution BPM for Linear Colliders  

SciTech Connect (OSTI)

A high resolution Beam Position Monitor (BPM) is necessary for the beam-based alignment systems of high energy and low emittance electron linacs. Such a monitor is developed in the framework of the European CARE/SRF programme, in a close collaboration between DESY and CEA/DSM/DAPNIA. This monitor is a radiofrequency re-entrant cavity, which can be used either at room or cryogenic temperature, in an environment where dust particle contamination has to be avoided, such as superconducting cavities in a cryomodule. A first prototype of a re-entrant BPM has already delivered measurements at 2K. inside the first cryomodule (ACC1) on the TESLA Test Facility 2 (TTF2). The performances of this BPM are analyzed both experimentally and theoretically, and the limitations of this existing system clearly identified. A new cavity and new electronics have been designed in order to improve the position resolution down to 1 {mu}m and the damping time down to 10 ns.

Simon, C.; Chel, S.; Luong, M.; Napoly, O.; Novo, J.; Roudier, D. [Centre a l'Energie Atomique/Saclay, DSM/DAPNIA/SACM, F91191 Gif-sur-Yvette Cedex (France); Baboi, N.; Noelle, D.; Mildner, N.; Zapfe, K. [Deutsches Elektronen Synchroton, Notkestasse 85, D-22603 Hamburg (Germany); Rouviere, N. [Centre National de Recherche Scientifique, IN2P3 - IPN/Orsay, F91406 Orsay Cedex (France)

2006-11-20T23:59:59.000Z

96

Exploration And Discovery In Yellowstone Lake- Results From High-Resolution  

Open Energy Info (EERE)

Exploration And Discovery In Yellowstone Lake- Results From High-Resolution Exploration And Discovery In Yellowstone Lake- Results From High-Resolution Sonar Imaging, Seismic Reflection Profiling, And Submersible Studies Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Exploration And Discovery In Yellowstone Lake- Results From High-Resolution Sonar Imaging, Seismic Reflection Profiling, And Submersible Studies Details Activities (1) Areas (1) Regions (0) Abstract: No portion of the American continent is perhaps so rich in wonders as the Yellow Stone' (F.V. Hayden, September 2, 1874) Discoveries from multi-beam sonar mapping and seismic reflection surveys of the northern, central, and West Thumb basins of Yellowstone Lake provide new insight into the extent of post-collapse volcanism and active hydrothermal

97

Potential High Resolution Dosimeters For MRT  

SciTech Connect (OSTI)

Microbeam Radiation Therapy (MRT) uses highly collimated, quasi-parallel arrays of X-ray microbeams of 50-600 keV, produced by 2nd and 3rd generation synchrotron sources, such as the National Synchrotron Light Source (NSLS) in the U.S., and the European Synchrotron Radiation Facility (ESRF) in France, respectively. High dose rates are necessary to deliver therapeutic doses in microscopic volumes, to avoid spreading of the microbeams by cardiosynchronous movement of the tissues. A small beam divergence and a filtered white beam spectrum in the energy range between 30 and 250 keV results in the advantage of steep dose gradients with a sharper penumbra than that produced in conventional radiotherapy. MRT research over the past 20 years has allowed a vast number of results from preclinical trials on different animal models, including mice, rats, piglets and rabbits. Microbeams in the range between 10 and 100 micron width show an unprecedented sparing of normal radiosensitive tissues as well as preferential damage to malignant tumor tissues. Typically, MRT uses arrays of narrow ({approx}25-100 micron-wide) microplanar beams separated by wider (100-400 microns centre-to-centre, c-t-c) microplanar spaces. We note that thicker microbeams of 0.1-0.68 mm used by investigators at the NSLS are still called microbeams, although some invesigators in the community prefer to call them minibeams. This report, however, limits it discussion to 25-100 {mu}m microbeams. Peak entrance doses of several hundreds of Gy are surprisingly well tolerated by normal tissues. High resolution dosimetry has been developed over the last two decades, but typical dose ranges are adapted to dose delivery in conventional Radiation Therapy (RT). Spatial resolution in the sub-millimetric range has been achieved, which is currently required for quality assurance measurements in Gamma-knife RT. Most typical commercially available detectors are not suitable for MRT applications at a dose rate of 16000 Gy/s, micron resolution and a dose range over several orders of magnitude. This paper will give an overview of all dosimeters tested in the past at the ESRF with their advantages and drawbacks. These detectors comprise: Ionization chambers, Alanine Dosimeters, MOSFET detectors, Gafchromic registered films, Radiochromic polymers, TLDs, Polymer gels, Fluorescent Nuclear Track Detectors (Al{sub 2}O{sub 3}:C, Mg single crystal detectors), OSL detectors and Floating Gate-based dosimetry system. The aim of such a comparison shall help with a decision on which of these approaches is most suitable for high resolution dose measurements in MRT. The principle of these detectors will be presented including a comparison for some dosimeters exposed with the same irradiation geometry, namely a 1x1 cm{sup 5} field size with microbeam exposures at the surface, 0.1 cm and 1 cm in depth of a PMMA phantom. For these test exposures, the most relevant irradiation parameters for future clinical trials have been chosen: 50 micron FWHM and 400 micron c-t-c distance. The experimental data are compared with Monte Carlo calculations.

Braeuer-Krisch, E.; Brochard, T.; Prezado, Y.; Bravin, A.; Berkvens, P. [European Synchrotron Radiation Facility (ESRF), 6 rue Horowitz, BP220, F-38043 Grenoble (France); Rosenfeld, A.; Lerch, M.; Petasecca, M. [Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW 2522 (Australia); Akselrod, M.; Sykora, J.; Bartz, J. [Landauer, Inc., Stillwater Crystal Growth Division, Stillwater OK, 74074 (United States); Ptaszkiewicz, M.; Olko, P. [Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Department of Radiation Physics and Dosimetry, ul. Radzikowskiego 152, PL 31-342 Krakow (Poland); Berg, A.; Wieland, M. [Medizinische Universitaet Wien, Zentrum f. Biomedizinische Technik und Physik (Austria); Doran, S. [Department of Physics, University of Surrey, Guildford (United Kingdom); Kamlowski, A. [Bruker Biospin, Rheinstetten (Germany); Cellere, G. [DEI, Department of Information Engineering, via Gradenigo, 6/B, 35131 PADOVA (Italy) and Applied Materials Baccini Via Postumia Ovest, 244, 31050 San Biagio di Callalta, Treviso; Paccagnella, A. [DEI, Department of Information Engineering, via Gradenigo, 6/B, 35131 PADOVA (Italy); Siegbahn, E. A. [Department of Medical Physics, Karolinska Universitetssjukhuset, 17176 Stockholm (Sweden)

2010-07-23T23:59:59.000Z

98

Lynx: A High-Resolution Synthetic Aperture Radar  

SciTech Connect (OSTI)

Lynx is a high resolution, synthetic aperture radar (SAR) that has been designed and built by Sandia National Laboratories in collaboration with General Atomics (GA). Although Lynx may be operated on a wide variety of manned and unmanned platforms, it is primarily intended to be fielded on unmanned aerial vehicles. In particular, it may be operated on the Predator, I-GNAT, or Prowler II platforms manufactured by GA Aeronautical Systems, Inc. The Lynx production weight is less than 120 lb. and has a slant range of 30 km (in 4 mm/hr rain). It has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode. In ground moving target indicator mode, the minimum detectable velocity is 6 knots with a minimum target cross-section of 10 dBsm. In coherent change detection mode, Lynx makes registered, complex image comparisons either of 0.1 m resolution (minimum) spotlight images or of 0.3 m resolution (minimum) strip images. The Lynx user interface features a view manager that allows it to pan and zoom like a video camera. Lynx was developed under corporate finding from GA and will be manufactured by GA for both military and commercial applications. The Lynx system architecture will be presented and some of its unique features will be described. Imagery at the finest resolutions in both spotlight and strip modes have been obtained and will also be presented.

Doerry, A.W.; Hensley, W.H.; Pace, F.; Stence, J.; Tsunoda, S.I.; Walker, B.C.; Woodring, M.

1999-03-08T23:59:59.000Z

99

Source Identification of Underground Fuel Spills by Solid-Phase Microextraction/High-Resolution Gas Chromatography/Genetic Algorithms  

Science Journals Connector (OSTI)

Source Identification of Underground Fuel Spills by Solid-Phase Microextraction/High-Resolution Gas Chromatography/Genetic Algorithms ... Groundwater is the last remaining source of potable water for many households and communities in the southeastern United States.1 Its possible contamination by fuels stored in leaking underground tanks and pipelines has become a serious environmental problem, prompting both federal and state regulatory agencies to fund the development of new methods for the identification of fuel materials recovered from subsurface environments. ...

B. K. Lavine; J. Ritter; A. J. Moores; M. Wilson; A. Faruque; H. T. Mayfield

1999-12-16T23:59:59.000Z

100

Sum Frequency High-Resolution Spectrometer (SFV-VS) | EMSL  

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

generation (SFG) response... Capturing inhomogeneous broadening of the -CN stretch vibration in a Langmuir monolayer with high-resolution spectra and Even though in...

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

High-Resolution Diagrams Now Available | Department of Energy  

Energy Savers [EERE]

28, 2010 - 9:59am Addthis Andrea Spikes Communicator at DOE's National Renewable Energy Laboratory The newest content now available on Energy Savers is high-resolution...

102

High resolution electron microscopic studies on ferrosilite III  

Science Journals Connector (OSTI)

High resolution transmission electron microscopic (HRTEM) studies on ferrosilite (Fs) III confirmed the periodicity nine (p=9) of the tetrahedral chains in this silicate. Various chain periodicit...

M. Czank; B. Simons

1983-05-01T23:59:59.000Z

103

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone...  

Open Energy Info (EERE)

Caldera Geothermal Region Retrieved from "http:en.openei.orgwindex.php?titleHigh-ResolutionAeromagneticMappingOfVolcanicTerrain,YellowstoneNationalPark&oldid...

104

Merging high resolution geophysical and geochemical surveys to...  

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

high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon Patrick Walsh Ormat Nevada Inc. Innovative technologies May 19, 2010...

105

NREL GIS Data: Continental United States Photovoltaic High Resolution |  

Open Energy Info (EERE)

Photovoltaic High Resolution Photovoltaic High Resolution Dataset Summary Description Abstract: Monthly and annual average solar resource potential for 48 Contiguous United States. Purpose: Provide information on the solar resource potential for the 48 contiguous states. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of 0.1 degrees in both latitude and longitude, or about 10 km in size. This data was developed using the State University of New York/Albany satellite radiation model. This model was developed by Dr. Richard Perez and collaborators at the National Renewable Energy Laboratory and other universities for the U.S. Department of Energy. Specific information about this model can be found in Perez, et al. (2002). This model uses hourly radiance images from geostationary weather satellites, daily snow cover data, and monthly averages of atmospheric water vapor, trace gases, and the amount of aerosols in the atmosphere to calculate the hourly total insolation (sun and sky) falling on a horizontal surface. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalable at a 10km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

106

ADVANCES IN ELECTRONICS AND ELECTRON PHYSICS, VOL. 83 LVSEM for High Resolution Topographic and Density  

E-Print Network [OSTI]

ADVANCES IN ELECTRONICS AND ELECTRON PHYSICS, VOL. 83 LVSEM for High Resolution Topographic Surface-Imaging Scanning Electron Microscope 205 C. Electrons as Probes in Scanning Microscopes 205 D. Limitations Associated with the Use of Electrons as the Probing Radiation 206 E. Response to These Limitations

Pawley, James

107

Object Oriented Assessment Of Damage Due To Natural Disaster Using Very High Resolution  

E-Print Network [OSTI]

Object Oriented Assessment Of Damage Due To Natural Disaster Using Very High Resolution Images Anne.wald@ensmp.fr Abstract--A building damage assessment method applied to the case of the earthquake of Bam is proposed assessment is proposed. It allows a classification performance of the buildings among four damage grades up

Paris-Sud XI, Université de

108

HIGH RESOLUTION MOTION ESTIMATION OF SEA ICE USING AN IMPLICIT QUAD-TREE APPROACH  

E-Print Network [OSTI]

and dynamic nature of sea ice is intimately connected with the thermal regulation of planetary heat transferHIGH RESOLUTION MOTION ESTIMATION OF SEA ICE USING AN IMPLICIT QUAD-TREE APPROACH M. Thomas, C. A data products. Since the motion is extracted from the image data iteratively, the estimated field

Geiger, Cathleen

109

High resolution bragg focusing optics for synchrotron monochromators and analyzers  

SciTech Connect (OSTI)

A number of different applications for high resolution Bragg Focusing Optics are reviewed. Applications include Sagittal Focusing, Energy Dispersive optics for x-ray absorption and diffraction, a curved analyzer-multichannel detector method for efficient acquisition of powder and small angle scattering data, the use of Backscattering Analyzers for very high resolution inelastic scattering, and curved crystals for high energy applications.

Knapp, G.S.; Beno, M.A.; Gofron, K.J.

1997-07-01T23:59:59.000Z

110

Detection of Underground Marlpit Quarries Using High Resolution Seismic  

E-Print Network [OSTI]

Detection of Underground Marlpit Quarries Using High Resolution Seismic B. Piwakowski* (Ecole of high resolution reflection seismic for the detection and location of underground marlpit quarries of the geological structure, the results show that the detection of marlpit underground quarries, often considered

Boyer, Edmond

111

Neutrino Telescope Array Letter of Intent: A Large Array of High Resolution Imaging Atmospheric Cherenkov and Fluorescence Detectors for Survey of Air Showers from Cosmic Tau Neutrinos in the PeV-EeV Energy Range  

E-Print Network [OSTI]

This Letter of Intent (LoI) describes the outline and plan for the Neutrino Telescope Array (NTA) project. High-energy neutrinos provide unique and indisputable evidence for hadronic acceleration, as well as a most accurate probe into the hidden sector of traditional astronomy or physics, such as dark matter. However, their extremely low flux and interaction cross section make their detection extraordinarily difficult. Recently, IceCube has reported astronomical neutrino candidates in excess of expectation from atmospheric secondaries, but is limited by the water Cherenkov detection method. A next generation high-energy neutrino telescope should be capable of establishing indisputable evidence for cosmic high-energy neutrinos. It should not only have orders-of-magnitude larger sensitivity, but also enough pointing accuracy to probe known or unknown astronomical objects, without suffering from atmospheric secondaries. The proposed installation is a large array of compound eye stations of imaging atmospheric Ch...

Sasaki, Makoto

2014-01-01T23:59:59.000Z

112

High-resolution scanning transmission electron microscopy  

Science Journals Connector (OSTI)

...where, is the brightness of the source and bs/80 is the ratio of the real image of the...im-age (0.61A/a). The quantity bs/80 can be most easily defined in the source...tube can be ac-quired at a reasonable cost and is com-patible with full-color displays...

AV Crewe

1983-07-22T23:59:59.000Z

113

High-Resolution Estimation of Near-Subsurface Water Content using Surface GPR Ground Wave Information  

E-Print Network [OSTI]

-scarce agricultural areas. Conventional measurements of water content (such as from time domain reflectometry [TDR], neutron probe or gravimetric techniques) are intrusive and provide information at a 'point' scale, which

Rubin, Yoram

114

Subsurface Imaging using Ground-Penetrating Radar Measurements Nathan Goodman, Carl Leuschen, Richard Plumb and Chris Allen  

E-Print Network [OSTI]

of transmitters and receivers in several common configurations, such as the offset VRP, cross-borehole of the subsurface layers. Further- more, the advantages of ground-penetrating radar over drill- ing and digging FACILITY Work has just been completed on a fully automated test facility. A large concrete box

Kansas, University of

115

Small UAV-Acquired, High-resolution, Georeferenced Still Imagery  

SciTech Connect (OSTI)

Currently, small Unmanned Aerial Vehicles (UAVs) are primarily used for capturing and down-linking real-time video. To date, their role as a low-cost airborne platform for capturing high-resolution, georeferenced still imagery has not been fully utilized. On-going work within the Unmanned Vehicle Systems Program at the Idaho National Laboratory (INL) is attempting to exploit this small UAV-acquired, still imagery potential. Initially, a UAV-based still imagery work flow model was developed that includes initial UAV mission planning, sensor selection, UAV/sensor integration, and imagery collection, processing, and analysis. Components to support each stage of the work flow are also being developed. Critical to use of acquired still imagery is the ability to detect changes between images of the same area over time. To enhance the analysts’ change detection ability, a UAV-specific, GIS-based change detection system called SADI or System for Analyzing Differences in Imagery is under development. This paper will discuss the associated challenges and approaches to collecting still imagery with small UAVs. Additionally, specific components of the developed work flow system will be described and graphically illustrated using varied examples of small UAV-acquired still imagery.

Ryan Hruska

2005-09-01T23:59:59.000Z

116

High resolution amorphous silicon radiation detectors  

DOE Patents [OSTI]

A radiation detector employing amorphous Si:H cells in an array with each detector cell having at least three contiguous layers (n type, intrinsic, p type), positioned between two electrodes to which a bias voltage is applied. An energy conversion layer atop the silicon cells intercepts incident radiation and converts radiation energy to light energy of a wavelength to which the silicon cells are responsive. A read-out device, positioned proximate to each detector element in an array allows each such element to be interrogated independently to determine whether radiation has been detected in that cell. The energy conversion material may be a layer of luminescent material having a columnar structure. In one embodiment a column of luminescent material detects the passage therethrough of radiation to be detected and directs a light beam signal to an adjacent a-Si:H film so that detection may be confined to one or more such cells in the array. One or both electrodes may have a comb structure, and the teeth of each electrode comb may be interdigitated for capacitance reduction. The amorphous Si:H film may be replaced by an amorphous Si:Ge:H film in which up to 40 percent of the amorphous material is Ge. Two dimensional arrays may be used in X-ray imaging, CT scanning, crystallography, high energy physics beam tracking, nuclear medicine cameras and autoradiography.

Street, Robert A. (Palo Alto, CA); Kaplan, Selig N. (El Cerrito, CA); Perez-Mendez, Victor (Berkeley, CA)

1992-01-01T23:59:59.000Z

117

High resolution amorphous silicon radiation detectors  

DOE Patents [OSTI]

A radiation detector employing amorphous Si:H cells in an array with each detector cell having at least three contiguous layers (n-type, intrinsic, p-type), positioned between two electrodes to which a bias voltage is applied. An energy conversion layer atop the silicon cells intercepts incident radiation and converts radiation energy to light energy of a wavelength to which the silicon cells are responsive. A read-out device, positioned proximate to each detector element in an array allows each such element to be interrogated independently to determine whether radiation has been detected in that cell. The energy conversion material may be a layer of luminescent material having a columnar structure. In one embodiment a column of luminescent material detects the passage therethrough of radiation to be detected and directs a light beam signal to an adjacent a-Si:H film so that detection may be confined to one or more such cells in the array. One or both electrodes may have a comb structure, and the teeth of each electrode comb may be interdigitated for capacitance reduction. The amorphous Si:H film may be replaced by an amorphous Si:Ge:H film in which up to 40 percent of the amorphous material is Ge. Two dimensional arrays may be used in X-ray imaging, CT scanning, crystallography, high energy physics beam tracking, nuclear medicine cameras and autoradiography. 18 figs.

Street, R.A.; Kaplan, S.N.; Perez-Mendez, V.

1992-05-26T23:59:59.000Z

118

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone  

Open Energy Info (EERE)

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone National Park Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone National Park Details Activities (1) Areas (1) Regions (0) Abstract: High-resolution aeromagnetic data acquired over Yellowstone National Park (YNP) show contrasting patterns reflecting differences in rock composition, types and degree of alteration, and crustal structures that mirror the variable geology of the Yellowstone Plateau. The older, Eocene, Absaroka Volcanic Supergroup, a series of mostly altered, andesitic volcanic and volcaniclastic rocks partially exposed in mountains on the eastern margin of YNP, produces high-amplitude, positive magnetic

119

High resolution linkage and association study of quantitative trait loci  

E-Print Network [OSTI]

As a large number of single nucleotide polymorphisms (SNPs) and microsatellite markers are available, high resolution mapping employing multiple markers or multiple allele markers is an important step to identify quantitative trait locus (QTL...

Jung, Jeesun

2005-11-01T23:59:59.000Z

120

The New England High-Resolution Temperature Program  

Science Journals Connector (OSTI)

The New England High-Resolution Temperature Program seeks to improve the accuracy of summertime 2-m temperature and dewpoint temperature forecasts in the New England region through a collaborative effort between the research and operational ...

David J. Stensrud; Nusrat Yussouf; Michael E. Baldwin; Jeffery T. McQueen; Jun Du; Binbin Zhou; Brad Ferrier; Geoffrey Manikin; F. Martin Ralph; James M. Wilczak; Allen B. White; Irina Djlalova; Jian-Wen Bao; Robert J. Zamora; Stanley G. Benjamin; Patricia A. Miller; Tracy Lorraine Smith; Tanya Smirnova; Michael F. Barth

2006-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard...  

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

Hello Lumens. The new way to shop for light. Energysaver.gov DoEBillboardGoodbyeWatts.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution EPS...

122

High-resolution numerical simulation of the Pacific Ocean  

Science Journals Connector (OSTI)

The present study developed Pacific Ocean models from the Research Institute for Applied Mechanics Ocean Model (RIAMOM) with very high horizontal ... high-resolution models show realistic climatological features ...

Sung Hyup You; Jong Hwan Yoon

2010-02-01T23:59:59.000Z

123

Selecting Representative High Resolution Sample Images for Land Cover Studies.  

E-Print Network [OSTI]

explore the com- tained using the TM map. The performance of samples selected by a combination of cover composition and con-bined use of coarse and fine resolution data in land cover studies. It describes composition at the regional scale. The Purposive Selection Algorithm (PSA) cover studies in which both large

Li, Zhanqing

124

High-resolution imaging with soft x-rays  

Science Journals Connector (OSTI)

...concave surface of the larger mirror, where a second reflection...the surface of the spherical mirrors is the main limitation, and...achievable and will permit a Schwarzschild x-ray microscope to have...be able to test spherical mirrors to within 6 angstroms by next...

AL Robinson

1982-01-08T23:59:59.000Z

125

High resolution image reconstruction with constrained, total-variation minimization  

E-Print Network [OSTI]

in computed tomography (CT), see for example [1], because it is possible to account for noise in the data the resolution is arbitrarily high, because the system resolution is still limited by the discrete data sampling of the volume and ideal conditions of perfect data consistency: g = Xf, (1) where g represents the projection

Kurien, Susan

126

Application Of High-Resolution Thermal Infrared Sensors For Geothermal  

Open Energy Info (EERE)

High-Resolution Thermal Infrared Sensors For Geothermal High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Application Of High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Details Activities (2) Areas (1) Regions (0) Abstract: The Salton Sea geothermal field straddles the southeast margin of the Salton Sea in California, USA. This field includes approximately 20km2 of mud volcanoes and mud pots and centered on the Mullet Island thermal anomaly. The area has been previously exploited for geothermal power; there are currently seven power plants in the area that produce 1000 MW. The field itself is relatively un-vegetated, which provides for unfettered

127

Development of HydroImage, A User Friendly Hydrogeophysical Characterization Software  

SciTech Connect (OSTI)

HydroImage, user friendly software that utilizes high-resolution geophysical data for estimating hydrogeological parameters in subsurface strate, was developed under this grant. HydroImage runs on a personal computer platform to promote broad use by hydrogeologists to further understanding of subsurface processes that govern contaminant fate, transport, and remediation. The unique software provides estimates of hydrogeological properties over continuous volumes of the subsurface, whereas previous approaches only allow estimation of point locations. thus, this unique tool can be used to significantly enhance site conceptual models and improve design and operation of remediation systems. The HydroImage technical approach uses statistical models to integrate geophysical data with borehole geological data and hydrological measurements to produce hydrogeological parameter estimates as 2-D or 3-D images.

Mok, Chin Man [GSI Environmental] [GSI Environmental; Hubbard, Susan [Lawrence Berkeley National Laboratory] [Lawrence Berkeley National Laboratory; Chen, Jinsong [Lawrence Berkeley National Laboratory] [Lawrence Berkeley National Laboratory; Suribhatla, Raghu [AMEC E& I] [AMEC E& I; Kaback, Dawn Samara [AMEC E& I] [AMEC E& I

2014-01-29T23:59:59.000Z

128

High Resolution PET with 250 micrometer LSO Detectors and Adaptive Zoom  

SciTech Connect (OSTI)

There have been impressive improvements in the performance of small-animal positron emission tomography (PET) systems since their first development in the mid 1990s, both in terms of spatial resolution and sensitivity, which have directly contributed to the increasing adoption of this technology for a wide range of biomedical applications. Nonetheless, current systems still are largely dominated by the size of the scintillator elements used in the detector. Our research predicts that developing scintillator arrays with an element size of 250 {micro}m or smaller will lead to an image resolution of 500 {micro}m when using 18F- or 64Cu-labeled radiotracers, giving a factor of 4-8 improvement in volumetric resolution over the highest resolution research systems currently in existence. This proposal had two main objectives: (i) To develop and evaluate much higher resolution and efficiency scintillator arrays that can be used in the future as the basis for detectors in a small-animal PET scanner where the spatial resolution is dominated by decay and interaction physics rather than detector size. (ii) To optimize one such high resolution, high sensitivity detector and adaptively integrate it into the existing microPET II small animal PET scanner as a 'zoom-in' detector that provides higher spatial resolution and sensitivity in a limited region close to the detector face. The knowledge gained from this project will provide valuable information for building future PET systems with a complete ring of very high-resolution detector arrays and also lay the foundations for utilizing high-resolution detectors in combination with existing PET systems for localized high-resolution imaging.

Cherry, Simon R.; Qi, Jinyi

2012-01-08T23:59:59.000Z

129

High Resolution Solar Energy Resource Assessment within the UNEP Project  

Open Energy Info (EERE)

High Resolution Solar Energy Resource Assessment within the UNEP Project High Resolution Solar Energy Resource Assessment within the UNEP Project SWERA Dataset Summary Description (Abstract): To expand the world wide use of renewable energy a consistent, reliable, verifiable, and easily accessible database of solar energy resources is needed. Within the UNEP (United Nations Environment Programme) Project SWERA (Solar and Wind Energy Resource Assessment, http://swera.unep.net), funded by GEF (Global Environment Facility), a global database of solar and wind energy resources will be set up. SWERA will provide, beside the wind products, global horizontal irradiance, which is mostly used to plan photovoltaic systems, and direct normal irradiance, which is needed for solar concentrating systems. For selected countries throughout the world, additionally high resolution data will be produced which is required to plan solar energy systems in detail. Within SWERA, the partners DLR, SUNY and INPE calculate solar irradiance with high temporal resolution of 1 hour and with a spatial resolution of 10km x 10km. By processing data from geostationary satellites we provide solar irradiance data for Cuba, El Salvador, Honduras, Nicaragua, Guatemala, Brazil, Ghana, Ethiopia, Kenya, China, Sri Lanka, Nepal, and Bangladesh. In this paper we describe the ongoing work of developing this high resolution solar irradiance tx_metadatatool and cross-checking of the used solar irradiance algorithms for various satellite data.

130

Merging High Resolution Geophysical and Geochemical Surveys to Reduce  

Open Energy Info (EERE)

Merging High Resolution Geophysical and Geochemical Surveys to Reduce Merging High Resolution Geophysical and Geochemical Surveys to Reduce Exploration Risk at Glass Buttes, Oregon Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Merging High Resolution Geophysical and Geochemical Surveys to Reduce Exploration Risk at Glass Buttes, Oregon Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description This program will combine detailed gravity, high resolution aeromagnetic, and LIDAR data, all of which will be combined for structural modeling, with hyperspectral data, which will identify and map specific minerals and mineral assemblages that may point to upflow zones. The collection of these surveys and analyses of the merged data and model will be used to site deeper slim holes. Slim holes will be flow tested to determine whether or not Ormat can move forward with developing this resource. An innovative combination of geophysical and geochemical tools will significantly reduce risk in exploring this area, and the results will help to evaluate the value of these tools independently and in combination when exploring for blind resources where structure, permeability, and temperature are the most pressing questions. The slim holes will allow testing of models and validation of methods, and the surveys within the wellbores will be used to revise the models and site production wells if their drilling is warranted.

131

A High-resolution Method for Realistic Detonation Structure Simulation  

E-Print Network [OSTI]

A High-resolution Method for Realistic Detonation Structure Simulation R. Deiterding Abstract. Detonation simulation is one of the computationally most challenging hyperbolic problems of practical. Introduction Detonations are shock-induced combustion waves that internally consist of a dis- continuous

Deiterding, Ralf

132

High-Resolution, Parallel Visualization of Turbomachinery Flowelds  

E-Print Network [OSTI]

High-Resolution, Parallel Visualization of Turbomachinery Flowelds Michael G. List , Mark G Turbomachinery post- and co-processing and visualization tools are under development. The result has been in the analysis of turbomachinery. It has always been the way of the CFD analyst to expand and resolve simulations

Cincinnati, University of

133

High-Resolution Simulations of Coal Injection in A Gasifier  

Science Journals Connector (OSTI)

High-Resolution Simulations of Coal Injection in A Gasifier ... The shrinkage of the coal particles because of devolatilization and drying was ignored, and a single mean particle size was used. ... Simulations with three different grid resolutions were conducted (denoted by coarse, medium, and fine). ...

Tingwen Li; Aytekin Gel; Madhava Syamlal; Chris Guenther; Sreekanth Pannala

2010-07-15T23:59:59.000Z

134

Absolute shape measurements using high-resolution optoelectronic holography methods  

E-Print Network [OSTI]

Absolute shape measurements using high- resolution optoelectronic holography methods Cosme Furlong optoelectronic holography (OEH) methodology is described. This description addresses apparatus and analysis-Optical Instrumentation Engineers. [S0091-3286(00)02601-5] Subject terms: CAD/CAE models; fiber optics; optoelectronic

Furlong, Cosme

135

Nanoparticle delivery Nanofountain-Probe-Based High-Resolution Patterning  

E-Print Network [OSTI]

Nanoparticle delivery Nanofountain-Probe-Based High-Resolution Patterning and Single-Cell Injection these nanoparticles will require unrealized spatial control. Furthermore, single-cell in vitro transfection methods of functionalized diamond nanoparticles are demonstrated using a broadly applicable nanofountain probe, a tool

Espinosa, Horacio D.

136

High-resolution terahertz atmospheric water vapor continuum measurements  

E-Print Network [OSTI]

High-resolution terahertz atmospheric water vapor continuum measurements David M. Slocum,* Thomas M such as pollution monitoring and the detection of energetic chemicals using remote sensing over long path lengths through the atmosphere. Although there has been much attention to atmospheric effects over narrow

Massachusetts at Lowell, University of

137

ASTRO-H White Paper - High Resolution Spectroscopy of Interstellar and Circumgalactic Gas in the Milky Way and Other Galaxies  

E-Print Network [OSTI]

We describe the potential of high resolution imaging spectroscopy with the SXS on ASTRO-H to advance our understanding of the interstellar- and circumgalactic media of our own Galaxy, and other galaxies. Topics to be addressed range from absorption spectroscopy of dust in the Galactic interstellar medium, to observations to constrain the total mass-, metal-, and energy flow out of starburst galaxies.

Paerels, F; Anabuki, N; Costantini, E; de Vries, C; Fujimoto, R; Hornschemeier, A; Iizuka, R; Kilbourne, C; Konami, S; LaMassa, S; Loewenstein, M; McCammon, D; Matsushita, K; McNamara, B; Mitsuishi, I; Nagino, R; Nakagawa, T; Porter, S; Sakai, K; Smith, R K; Takei, Y; Tsuru, T; Uchiyama, H; Yamaguchi, H; Yamauchi, S

2014-01-01T23:59:59.000Z

138

Documentation of high resolution solar resource assessment for Sri Lanka  

Open Energy Info (EERE)

Sri Lanka Sri Lanka provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Sri Lanka provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2002 and 2003. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

139

PATTERN: Advantages of High Resolution Weather Radar Networks [EVS Event]  

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

PATTERN: Advantages of High Resolution Weather Radar Networks PATTERN: Advantages of High Resolution Weather Radar Networks September 30, 2013 Speaker: Dr. Katharina Lengfeld Meteorological Institute, University of Hamburg, Germany Date: Monday, September 30, 2013 Time: 11 am - 12 noon Location: Argonne National Laboratory TCS Building 240 Room 4301 Precipitation observations with radars operating in the X-band frequency range are essential for meeting present and future requirements for flood forecasting, water management, and other hydro-meteorological applications. Besides having higher resolution, these systems are cost-effective compared to S- or C-band radars because of smaller antenna size. Disadvantages of single X-band radars are the large influence of attenuation by liquid water and a relatively short range.

140

Documentation of high resolution solar resource assessment (10km) for  

Open Energy Info (EERE)

for for Ethiopia provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ethiopia provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Microsoft Word - 5Lab_High_Resolution.doc  

National Nuclear Security Administration (NNSA)

Proceedings from the Five Lab Confernce 2005 LA-UR-05-3732 Rider, W. J. et al. UNCLASSIFIED Approaches to Improved High-Resolution Methods for Eulerian Hydrodynamics (U) William Rider*, Jeff Greenough ** and Jim Kamm* *LANL, MS F699, Los Alamos, NM 87545 ** LLNL, Livermore, CA 94550 We have extended the usual notions used in high-resolution methods. Rather than applying a single principle such as monotonicity or essentially non-oscillatory stencil selection, we hybridize multiple principles applying them where they are most effective. We define methods that blend high-order accuracy with essentially non-oscillatory methods when monotonicity conditions are violated. The methods can be defined with a number of variants leading to results with differing properties. We also focus on the

142

Documentation of high resolution solar resource assessment for Ghana  

Open Energy Info (EERE)

Ghana Ghana provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ghana provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give projet developer a first impression of the solar resource of the country. For the selected

143

Space to Think: Large, High-Resolution Displays for Sensemaking  

SciTech Connect (OSTI)

Space supports human cognitive abilities in a myriad of ways. The note attached to the side of the monitor, the papers spread out on the desk, diagrams scrawled on a whiteboard, and even the keys left out on the counter are all examples of using space to recall, reveal relationships, and think. Technological advances have made it possible to construct large display environments in which space has real meaning. This paper examines how increased space affects the way displays are regarded and used within the context of the cognitively demanding task of sensemaking. A study was conducted observing analysts using a prototype large, high-resolution display to solve an analytic problem. This paper reports on the results of this study and suggests a number of potential design criteria for future sensemaking tools developed for large, high-resolution displays.

Andrews, Christopher P.; Endert, Alexander; North, Chris

2010-05-05T23:59:59.000Z

144

High resolution reservoir geological modelling using outcrop information  

SciTech Connect (OSTI)

This is China`s first case study of high resolution reservoir geological modelling using outcrop information. The key of the modelling process is to build a prototype model and using the model as a geological knowledge bank. Outcrop information used in geological modelling including seven aspects: (1) Determining the reservoir framework pattern by sedimentary depositional system and facies analysis; (2) Horizontal correlation based on the lower and higher stand duration of the paleo-lake level; (3) Determining the model`s direction based on the paleocurrent statistics; (4) Estimating the sandbody communication by photomosaic and profiles; (6) Estimating reservoir properties distribution within sandbody by lithofacies analysis; and (7) Building the reservoir model in sandbody scale by architectural element analysis and 3-D sampling. A high resolution reservoir geological model of Youshashan oil field has been built by using this method.

Zhang Changmin; Lin Kexiang; Liu Huaibo [Jianghan Petroleum Institute, Hubei (China)] [and others

1997-08-01T23:59:59.000Z

145

Turbine component casting core with high resolution region  

DOE Patents [OSTI]

A hollow turbine engine component with complex internal features can include a first region and a second, high resolution region. The first region can be defined by a first ceramic core piece formed by any conventional process, such as by injection molding or transfer molding. The second region can be defined by a second ceramic core piece formed separately by a method effective to produce high resolution features, such as tomo lithographic molding. The first core piece and the second core piece can be joined by interlocking engagement that once subjected to an intermediate thermal heat treatment process thermally deform to form a three dimensional interlocking joint between the first and second core pieces by allowing thermal creep to irreversibly interlock the first and second core pieces together such that the joint becomes physically locked together providing joint stability through thermal processing.

Kamel, Ahmed; Merrill, Gary B.

2014-08-26T23:59:59.000Z

146

A high resolution cavity BPM for the CLIC Test Facility  

E-Print Network [OSTI]

In frame of the development of a high resolution BPM system for the CLIC Main Linac we present the design of a cavity BPM prototype. It consists of a waveguide loaded dipole mode resonator and a monopole mode reference cavity, both operating at 15 GHz, to be compatible with the bunch frequencies at the CLIC Test Facility. Requirements, design concept, numerical analysis, and practical considerations are discussed.

Chritin, N; Soby, L; Lunin, A; Solyak, N; Wendt, M; Yakovlev, V

2012-01-01T23:59:59.000Z

147

Sapphire analyzers for high-resolution x-ray spectroscopy.  

SciTech Connect (OSTI)

We present a sapphire (Al{sub 2}O{sub 3}) analyzer for high-resolution X-ray spectroscopy with 31-meV energy resolution. The analyzer is designed for resonant inelastic X-ray scattering (RIXS) measurements at the CuK{sub a} absorption edge near 8990 eV. The performance of the analyzer is demonstrated by measuring phonon excitations in beryllium because of its known dynamical structure and high counting rates.

Yavas, H.; Alp, E.; Sinn, H.; Alatas, A.; Said, A.; Shvydko, Y.; Toellner, T.; Khachatryan, R.; Billinge, S.; Hasan, Z.; Sturhahn, W.; Michigan State Univ.; Princeton Univ.; DESY

2007-11-11T23:59:59.000Z

148

Compact high resolution isobar separator for study of exotic decays  

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

Compact high resolution isobar separator for study of Compact high resolution isobar separator for study of exotic decays A. Piechaczek 1 , V. Shchepunov 1 , H. K. Carter 1 J. C. Batchelder 1 , E. F. Zganjar 2 1 UNIRIB, Oak Ridge Associated Universities, Oak Ridge, TN 37830 2 Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA 70803 A compact isobar separator, based on the Multi-Pass-Time-of-Flight (MTOF) principle, is developed [1]. A mass resolving power (MRP) as spectrometer of 110,000 (FWHM) is achieved in Time-of-Flight spectra of N 2 molecules (no physical ion separation) after 300 laps or ToF = 9.7 ms. Operated as a separator [2], molecules of N 2 and CO with ∆M/M = 1/2500 or 10.433 MeV are separated with a Bradbury Nielsen electrostatic ion gate, and the MRP (FWHM) is about 40,000 after 120 laps. In the separator as well as in

149

subsurface science | EMSL  

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

science subsurface science Leads No leads are available at this time. Oxidative Remobilization of Technetium Sequestered by Sulfide-Transformed Nano Zerovalent Iron. Abstract: The...

150

Which Bulb Is Right for You? (High-Resolution EPS Billboard)...  

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

EPS Billboard) Which Bulb Is Right for You? (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Which bulb is right for you? Save energy, save money....

151

Exposure to ambient black carbon derived from a unique inventory and high-resolution model  

Science Journals Connector (OSTI)

...method is applied for 16 combustion processes including coal combustion...High resolution mapping of combustion processes and implications for CO 2 emissions...High resolution mapping of combustion processes and implications for...

Rong Wang; Shu Tao; Yves Balkanski; Philippe Ciais; Olivier Boucher; Junfeng Liu; Shilong Piao; Huizhong Shen; Maria Raffaella Vuolo; Myrto Valari; Han Chen; Yuanchen Chen; Anne Cozic; Ye Huang; Bengang Li; Wei Li; Guofeng Shen; Bin Wang; Yanyan Zhang

2014-01-01T23:59:59.000Z

152

HIGH-RESOLUTION ATMOSPHERIC ENSEMBLE MODELING AT SRNL  

SciTech Connect (OSTI)

The High-Resolution Mid-Atlantic Forecasting Ensemble (HME) is a federated effort to improve operational forecasts related to precipitation, convection and boundary layer evolution, and fire weather utilizing data and computing resources from a diverse group of cooperating institutions in order to create a mesoscale ensemble from independent members. Collaborating organizations involved in the project include universities, National Weather Service offices, and national laboratories, including the Savannah River National Laboratory (SRNL). The ensemble system is produced from an overlapping numerical weather prediction model domain and parameter subsets provided by each contributing member. The coordination, synthesis, and dissemination of the ensemble information are performed by the Renaissance Computing Institute (RENCI) at the University of North Carolina-Chapel Hill. This paper discusses background related to the HME effort, SRNL participation, and example results available from the RENCI website.

Buckley, R.; Werth, D.; Chiswell, S.; Etherton, B.

2011-05-10T23:59:59.000Z

153

CO (3 – 2) HIGH-RESOLUTION SURVEY OF THE GALACTIC PLANE: R1  

SciTech Connect (OSTI)

We present the first release (R1) of data from the CO High-Resolution Survey (COHRS), which maps a strip of the inner Galactic plane in {sup 12}CO (J = 3 ? 2). The data are taken using the Heterodyne Array Receiver Programme on the James Clerk Maxwell Telescope (JCMT) in Hawaii, which has a 14 arcsec angular resolution at this frequency. When complete, this survey will cover |b| ? 0.°5 between 10° < l < 65°. This first release covers |b| ? 0.°5 between 10.°25 < l < 17.°5 and 50.°25 < l < 55.°25, and |b| ? 0.°25 between 17.°5 < l < 50.°25. The data are smoothed to a velocity resolution of 1 km s{sup –1}, a spatial resolution of 16 arcsec and achieve a mean rms of ?1 K. COHRS data are available to the community online at http://dx.doi.org/10.11570/13.0002. In this paper we describe the data acquisition and reduction techniques used and present integrated intensity images and longitude-velocity maps. We also discuss the noise characteristics of the data. The high resolution is a powerful tool for morphological studies of bubbles and filaments while the velocity information shows the spiral arms and outflows. These data are intended to complement both existing and upcoming surveys, e.g., the Bolocam Galactic Plane Survey (BGPS), ATLASGAL, the Herschel Galactic Plane Survey (Hi-GAL) and the JCMT Galactic Plane Survey with SCUBA-2 (JPS)

Dempsey, J. T.; Thomas, H. S.; Currie, M. J., E-mail: j.dempsey@jach.hawaii.edu, E-mail: h.thomas@jach.hawaii.edu, E-mail: m.currie@jach.hawaii.edu [Joint Astronomy Centre, 660 N. Aohoku Place, Hilo, HI 96720 (United States)

2013-11-01T23:59:59.000Z

154

NREL GIS Data: Continental United States High Resolution Concentrating  

Open Energy Info (EERE)

High Resolution Concentrating High Resolution Concentrating Solar Power Dataset Summary Description Abstract: Monthly and annual average solar resource potential for the lower 48 states of the United States of America. Purpose: Provide information on the solar resource potential for the for the lower 48 states of the United States of America. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of approximatley 40 km by 40 km in size. This data was developed from the Climatological Solar Radiation (CSR) Model. The CSR model was developed by the National Renewable Energy Laboratory for the U.S. Department of Energy. Specific information about this model can be found in Maxwell, George and Wilcox (1998) and George and Maxwell (1999). This model uses information on cloud cover, atmostpheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. The cloud cover data used as input to the CSR model are an 7-year histogram (1985-1991) of monthly average cloud fraction provided for grid cells of approximately 40km x 40km in size. Thus, the spatial resolution of the CSR model output is defined by this database. The data are obtained from the National Climatic Data Center in Ashville, North Carolina, and were developed from the U.S. Air Force Real Time Nephanalysis (RTNEPH) program. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalible at a 40km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

155

Wave-Based Subsurface Guide Star  

SciTech Connect (OSTI)

Astronomical or optical guide stars are either natural or artificial point sources located above the Earth's atmosphere. When imaged from ground-based telescopes, they are distorted by atmospheric effects. Knowing the guide star is a point source, the atmospheric distortions may be estimated and, deconvolved or mitigated in subsequent imagery. Extending the guide star concept to wave-based measurement systems to include acoustic, seismo-acoustic, ultrasonic, and radar, a strong artificial scatterer (either acoustic or electromagnetic) may be buried or inserted, or a pre-existing or natural sub-surface point scatterer may be identified, imaged, and used as a guide star to determine properties of the sub-surface volume. That is, a data collection is performed on the guide star and the sub-surface environment reconstructed or imaged using an optimizer assuming the guide star is a point scatterer. The optimization parameters are the transceiver height and bulk sub-surface background refractive index. Once identified, the refractive index may be used in subsequent reconstructions of sub-surface measurements. The wave-base guide star description presented in this document is for a multimonostatic ground penetrating radar (GPR) but is applicable to acoustic, seismo-acoustic, and ultrasonic measurement systems operating in multimonostatic, multistatic, multibistatic, etc., modes.

Lehman, S K

2011-07-26T23:59:59.000Z

156

Probabilistic Change Detection Framework for Analyzing Settlement Dynamics Using Very High-resolution Satellite Imagery  

SciTech Connect (OSTI)

Global human population growth and an increasingly urbanizing world have led to rapid changes in human settlement landscapes and patterns. Timely monitoring and assessment of these changes and dissemination of accurate information is important for policy makers, city planners, and humanitarian relief workers. Satellite imagery provides useful data for the aforementioned applications, and remote sensing can be used to identify and quantify change areas. We explore a probabilistic framework to identify changes in human settlements using very high-resolution satellite imagery. As compared to predominantly pixel-based change detection systems which are highly sensitive to image registration errors, our grid (block) based approach is more robust to registration errors. The presented framework is an automated change detection system applicable to both panchromatic and multi-spectral imagery. The detection system provides comprehensible information about change areas, and minimizes the post-detection thresholding procedure often needed in traditional change detection algorithms.

Vatsavai, Raju [ORNL] [ORNL; Graesser, Jordan B [ORNL] [ORNL

2012-01-01T23:59:59.000Z

157

IN-SITU ASSAY OF TRANSURANIC RADIONUCLIDES IN THE VADOSE ZONE USING HIGH-RESOLUTION SPECTRAL GAMMA LOGGING - A HANFORD CASE STUDY  

SciTech Connect (OSTI)

High-resolution spectral gamma logging in steel-cased boreholes is used to detect and quantify transuranic radionuclides in the subsurface. Pu-239, Pu-241, Am-241, and Np-237 are identified based on characteristic decay gammas. Typical minimum detectable levels are on the order of 20 to 40 nCi/g. In intervals of high transuranic concentrations, gamma rays from other sources may complicate analysis and interpretation. Gamma rays detected in the borehole may originate from three sources: decay of the parent transuranic radionuclide or a daughter; alpha interactions; and interactions with neutrons resulting from either spontaneous fission or alpha particle interactions.

ROHAY VJ; HENWOOD P; MCCAIN R

2009-11-30T23:59:59.000Z

158

4-D High-Resolution Seismic Reflection Monitoring of Miscible CO2 Injected into a Carbonate Reservoir  

SciTech Connect (OSTI)

The objective of this research project was to acquire, process, and interpret multiple high-resolution 3-D compressional wave and 2-D, 2-C shear wave seismic data in the hopes of observing changes in fluid characteristics in an oil field before, during, and after the miscible carbon dioxide (CO{sub 2}) flood that began around December 1, 2003, as part of the DOE-sponsored Class Revisit Project (DOE No.DE-AC26-00BC15124). Unique and key to this imaging activity is the high-resolution nature of the seismic data, minimal deployment design, and the temporal sampling throughout the flood. The 900-m-deep test reservoir is located in central Kansas oomoldic limestones of the Lansing-Kansas City Group, deposited on a shallow marine shelf in Pennsylvanian time. After 30 months of seismic monitoring, one baseline and eight monitor surveys clearly detected changes that appear consistent with movement of CO{sub 2} as modeled with fluid simulators and observed in production data. Attribute analysis was a very useful tool in enhancing changes in seismic character present, but difficult to interpret on time amplitude slices. Lessons learned from and tools/techniques developed during this project will allow high-resolution seismic imaging to be routinely applied to many CO{sub 2} injection programs in a large percentage of shallow carbonate oil fields in the midcontinent.

Richard D. Miller; Abdelmoneam E. Raef; Alan P. Byrnes; William E. Harrison

2007-06-30T23:59:59.000Z

159

High Resolution Atmospheric Modeling for Wind Energy Applications  

SciTech Connect (OSTI)

The ability of the WRF atmospheric model to forecast wind speed over the Nysted wind park was investigated as a function of time. It was found that in the time period we considered (August 1-19, 2008), the model is able to predict wind speeds reasonably accurately for 48 hours ahead, but that its forecast skill deteriorates rapidly after 48 hours. In addition, a preliminary analysis was carried out to investigate the impact of vertical grid resolution on the forecast skill. Our preliminary finding is that increasing vertical grid resolution does not have a significant impact on the forecast skill of the WRF model over Nysted wind park during the period we considered. Additional simulations during this period, as well as during other time periods, will be run in order to validate the results presented here. Wind speed is a difficult parameter to forecast due the interaction of large and small length scale forcing. To accurately forecast the wind speed at a given location, the model must correctly forecast the movement and strength of synoptic systems, as well as the local influence of topography / land use on the wind speed. For example, small deviations in the forecast track or strength of a large-scale low pressure system can result in significant forecast errors for local wind speeds. The purpose of this study is to provide a preliminary baseline of a high-resolution limited area model forecast performance against observations from the Nysted wind park. Validating the numerical weather prediction model performance for past forecasts will give a reasonable measure of expected forecast skill over the Nysted wind park. Also, since the Nysted Wind Park is over water and some distance from the influence of terrain, the impact of high vertical grid spacing for wind speed forecast skill will also be investigated.

Simpson, M; Bulaevskaya, V; Glascoe, L; Singer, M

2010-03-18T23:59:59.000Z

160

Subsurface Contamination Control  

SciTech Connect (OSTI)

There are two objectives of this report, ''Subsurface Contamination Control''. The first is to provide a technical basis for recommending limiting radioactive contamination levels (LRCL) on the external surfaces of waste packages (WP) for acceptance into the subsurface repository. The second is to provide an evaluation of the magnitude of potential releases from a defective WP and the detectability of the released contents. The technical basis for deriving LRCL has been established in ''Retrieval Equipment and Strategy for Wp on Pallet'' (CRWMS M and O 2000g, 6.3.1). This report updates the derivation by incorporating the latest design information of the subsurface repository for site recommendation. The derived LRCL on the external surface of WPs, therefore, supercede that described in CRWMS M and O 2000g. The derived LRCL represent the average concentrations of contamination on the external surfaces of each WP that must not be exceeded before the WP is to be transported to the subsurface facility for emplacement. The evaluation of potential releases is necessary to control the potential contamination of the subsurface repository and to detect prematurely failed WPs. The detection of failed WPs is required in order to provide reasonable assurance that the integrity of each WP is intact prior to MGR closure. An emplaced WP may become breached due to manufacturing defects or improper weld combined with failure to detect the defect, by corrosion, or by mechanical penetration due to accidents or rockfall conditions. The breached WP may release its gaseous and volatile radionuclide content to the subsurface environment and result in contaminating the subsurface facility. The scope of this analysis is limited to radioactive contaminants resulting from breached WPs during the preclosure period of the subsurface repository. This report: (1) documents a method for deriving LRCL on the external surfaces of WP for acceptance into the subsurface repository; (2) provides a table of derived LRCL for nuclides of radiological importance; (3) Provides an as low as is reasonably achievable (ALARA) evaluation of the derived LRCL by comparing potential onsite and offsite doses to documented ALARA requirements; (4) Provides a method for estimating potential releases from a defective WP; (5) Provides an evaluation of potential radioactive releases from a defective WP that may become airborne and result in contamination of the subsurface facility; and (6) Provides a preliminary analysis of the detectability of a potential WP leak to support the design of an airborne release monitoring system.

Y. Yuan

2001-11-16T23:59:59.000Z

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161

Which Bulb Is Right for You? (High-Resolution JPG Billboard)...  

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

More Documents & Publications Which Bulb Is Right for You? (High-Resolution EPS Billboard) Which Bulb Is Right for You? (Low-Resolution JPG Billboard) Goodbye, Watts....

162

Structural Health Monitoring by High-Resolution Brillouin-based Strain Measurements  

Science Journals Connector (OSTI)

The feasibility for high-resolution structural health monitoring based on fiber-optic frequency-domain Brillouin strain sensing is experimentally demonstrated. An iterative...

Bernini, Romeo; Minardo, Aldo; Zeni, Luigi

163

High-resolution lidar observations of mesospheric sodium and implications for adaptive optics  

Science Journals Connector (OSTI)

Observations of sodium density variability in the upper mesosphere/lower thermosphere, obtained using a high-resolution lidar system, show rapid fluctuations in the sodium centroid...

Pfrommer, Thomas; Hickson, Paul

2010-01-01T23:59:59.000Z

164

High-Resolution Fast-Neutron Spectrometry for Arms Control and Treaty Verification  

SciTech Connect (OSTI)

Many nondestructive nuclear analysis techniques have been developed to support the measurement needs of arms control and treaty verification, including gross photon and neutron counting, low- and high-resolution gamma spectrometry, time-correlated neutron measurements, and photon and neutron imaging. One notable measurement technique that has not been extensively studied to date for these applications is high-resolution fast-neutron spectrometry (HRFNS). Applied for arms control and treaty verification, HRFNS has the potential to serve as a complimentary measurement approach to these other techniques by providing a means to either qualitatively or quantitatively determine the composition and thickness of non-nuclear materials surrounding neutron-emitting materials. The technique uses the normally-occurring neutrons present in arms control and treaty verification objects of interest as an internal source of neutrons for performing active-interrogation transmission measurements. Most low-Z nuclei of interest for arms control and treaty verification, including 9Be, 12C, 14N, and 16O, possess fast-neutron resonance features in their absorption cross sections in the 0.5- to 5-MeV energy range. Measuring the selective removal of source neutrons over this energy range, assuming for example a fission-spectrum starting distribution, may be used to estimate the stoichiometric composition of intervening materials between the neutron source and detector. At a simpler level, determination of the emitted fast-neutron spectrum may be used for fingerprinting 'known' assemblies for later use in template-matching tests. As with photon spectrometry, automated analysis of fast-neutron spectra may be performed to support decision making and reporting systems protected behind information barriers. This paper will report recent work at Idaho National Laboratory to explore the feasibility of using HRFNS for arms control and treaty verification applications, including simulations and experiments, using fission-spectrum neutron sources to assess neutron transmission through composite low-Z attenuators.

David L. Chichester; James T. Johnson; Edward H. Seabury

2012-07-01T23:59:59.000Z

165

High-Resolution UV Relay Lens for Particle Size Distribution Measurements Using Holography  

SciTech Connect (OSTI)

Shock waves passing through a metal sample can produce ejecta particulates at a metal-vacuum interface. Holography records particle size distributions by using a high-power, short-pulse laser to freeze particle motion. The sizes of the ejecta particles are recorded using an in-line Fraunhofer holography technique. Because the holographic plate would be destroyed in an energetic environment, a high-resolution lens has been designed to relay the interference fringes to a safe environment. Particle sizes within a 12-mm-diameter, 5-mm-thick volume are recorded onto holographic film. To achieve resolution down to 0.5 ?m, ultraviolet laser (UV) light is needed. The design and assembly of a nine-element lens that achieves >2000 lp/mm resolution and operates at f/0.89 will be described. To set up this lens system, a doublet lens is temporarily attached that enables operation with 532-nm laser light and 1100 lp/mm resolution. Thus, the setup and alignment are performed with green light, but the dynamic recording is done with UV light. During setup, the 532-nm beam provides enough focus shift to accommodate the placement of a resolution target outside the ejecta volume; this resolution target does not interfere with the calibrated wires and pegs surrounding the ejecta volume. A television microscope archives images of resolution patterns that prove that the calibration wires, interference filter, holographic plate, and relay lenses are in their correct positions. Part of this lens is under vacuum, at the point where the laser illumination passes through a focus. Alignment and tolerancing of this high-resolution lens will be presented, and resolution variation through the 5-mm depth of field will be discussed.

Malone, Robert M.; Capelle, Gene A.; Frogget, Brent C.; Grover, Mike; Kaufman, Morris I.; Pazuchanics, Peter; Sorenson, Danny S.; Stevens, Gerald D.; Tibbits, Aric; Turley, William D.

2008-08-29T23:59:59.000Z

166

CHRISTINE Code for High ResolutIon Satellite mapping of optical ThIckness and ÅNgstrom Exponent. Part I: Algorithm and code  

Science Journals Connector (OSTI)

Previously developed DTA (Differential Textural Analysis) and SMA (Satellite Mapping of Aerosols) image processing codes address aerosol optical thickness (AOT) retrieval and mapping over urban areas by applying the contrast reduction principle to single ... Keywords: Ångstrom, Aerosol optical thickness, Air pollution, Contrast reduction, High resolution

Nicolas I. Sifakis; Christos Iossifidis

2014-01-01T23:59:59.000Z

167

Crystal structure of Si3N4·Y2O3 examined by a 1 MV high-resolution electron microscope  

Science Journals Connector (OSTI)

The crystal structure of Si3N4·Y2O3...prepared by a hot-press is examined in a 1 MV high-resolution electron microscope. The image contrast reveals that it is isostructural with one of the layered silicates, Akermanite

S. Horiuchi; M. Mitomo

1979-11-01T23:59:59.000Z

168

Solar Flare Chromospheric Line Emission: Comparison Between IBIS High-resolution Observations and Radiative Hydrodynamic Simulations  

E-Print Network [OSTI]

Solar flares involve impulsive energy release, which results in enhanced radiation in a broad spectral and at a wide height range. In particular, line emission from the chromosphere (lower atmosphere) can provide critical diagnostics of plasma heating processes. Thus, a direct comparison between high-resolution spectroscopic observations and advanced numerical modeling results can be extremely valuable, but has not been attempted so far. We present in this paper such a self-consistent investigation of an M3.0 flare observed by the Dunn Solar Telescope's (DST) Interferometric Bi-dimensional Spectrometer (IBIS) on 2011 September 24 that we have modeled with the radiative hydrodynamic code RADYN (Carlsson & Stein 1992, 1997; Abbett & Hawley 1999; Allred et al. 2005). We obtained images and spectra of the flaring region with IBIS in H$\\alpha$ 6563 \\AA\\ and Ca II 8542 \\AA, and with the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) in X-rays. The latter was used to infer the non-thermal elect...

da Costa, Fatima Rubio; Petrosian, Vahé; Dalda, Alberto Sainz; Liu, Wei

2014-01-01T23:59:59.000Z

169

A multi-purpose modular system for high-resolution microscopy at high hydrostatic pressure  

E-Print Network [OSTI]

We have developed a modular system for high-resolution microscopy at high hydrostatic pressure. The system consists of a pressurised cell of volume ~100 microlitres, a temperature controlled holder, a ram and a piston. We have made each of these components in several versions which can be interchanged to allow a wide range of applications. Here, we report two pressure cells with pressure ranges 0.1-700MPa and 0.1-100MPa, which can be combined with hollow or solid rams and pistons. Our system is designed to work with fluorescent samples (using a confocal or epifluorescence microscope), but also allows for transmitted light microscopy via the hollow ram and piston. The system allows precise control of pressure and temperature [-20-70C], as well as rapid pressure quenching. We demonstrate its performance and versatility with two applications: time-resolved imaging of colloidal phase transitions caused by pressure changes between 0.1MPa and 101MPa, and imaging the growth of Escherichia coli bacteria at 50MPa. We ...

Vass, Hugh; Herzig, Eva M; Ward, F Bruce; Clegg, Paul S; Allen, Rosalind J

2009-01-01T23:59:59.000Z

170

Optimisation of global grids for high-resolution remote sensing data  

Science Journals Connector (OSTI)

Abstract Upcoming remote sensing systems onboard satellites will generate unprecedented volumes of spatial data, hence challenging processing facilities in terms of storage and processing capacities. Thus, an efficient handling of remote sensing data is of vital importance, demanding a well-suited definition of spatial grids for the data?s storage and manipulation. For high-resolution image data, regular grids defined by map projections have been identified as practicable, cognisant of their drawbacks due to geometric distortions. To this end, we defined a new metric named grid oversampling factor (GOF) that estimates local data oversampling appearing during projection of generic satellite images to a regular raster grid. Based on common map projections, we defined sets of spatial grids optimised to minimise data oversampling. Moreover, they ensure that data undersampling cannot occur at any location. From the resulting GOF-values we concluded that equidistant projections are most suitable, with a global mean oversampling of 2% when using a system of seven continental grids (introduced under the name Equi7 Grid). Opposed to previous studies that suggested equal-area projections, we recommend the Plate Carrée, the Equidistant Conic and the Equidistant Azimuthal projection for global, hemispherical and continental grids, respectively.

Bernhard Bauer-Marschallinger; Daniel Sabel; Wolfgang Wagner

2014-01-01T23:59:59.000Z

171

Ultra High-Resolution Global Climate Simulation Project PRINCIPAL INVESTIGATOR: James J. Hack  

E-Print Network [OSTI]

changes in the frequency and intensity of extreme events. This project is developing the scientific a terrestrial carbon modeling capabil- ity. #12;Ultra High-Resolution Global Climate Simulation Project elersUltra High-Resolution Global Climate Simulation Project PRINCIPAL INVESTIGATOR: James J. Hack

172

3 July 2003 HIRES3D -ITC Research Seminar -Robert Hack 1 HIGH RESOLUTION REMOTE SENSING  

E-Print Network [OSTI]

3 July 2003 HIRES3D - ITC Research Seminar - Robert Hack 1 HIRES3D HIGH RESOLUTION REMOTE SENSING FOR 3D GROUND MODELING AND CLASSIFICATION ITC Research Seminar, 3 July 2003 Robert Hack International Seminar - Robert Hack 2 HIRES3D HIGH RESOLUTION REMOTE SENSING FOR 3D GROUND MODELING AND CLASSIFICATION

Hack, Robert

173

Computational performance of ultra-high-resolution capability in the Community Earth System Model  

Science Journals Connector (OSTI)

With the fourth release of the Community Climate System Model, the ability to perform ultra-high-resolution climate simulations is now possible, enabling eddy-resolving ocean and sea-ice models to be coupled to a finite-volume atmosphere model for a ... Keywords: Earth system modeling, Performance engineering, application optimization, climate modeling, high-resolution

John M. Dennis; Mariana Vertenstein; Patrick H. Worley; Arthur A. Mirin; Anthony P. Craig; Robert Jacob; Sheri Mickelson

2012-02-01T23:59:59.000Z

174

Cornelis Zwaan, open principle, and the future of high-resolution solar telescopes  

E-Print Network [OSTI]

Cornelis Zwaan, open principle, and the future of high-resolution solar telescopes Robert H erected up till 30 m height with sensors at several heights for the measurement of temperature; (iii) the design consequences for the new generation of high-resolution solar telescopes. Keywords

Rutten, Rob

175

High-resolution friction force microscopy under electrochemical control Aleksander Labuda,1  

E-Print Network [OSTI]

High-resolution friction force microscopy under electrochemical control Aleksander Labuda,1 William and development of a friction force microscope for high-resolution studies in electrochemical environments in liquids. The noise of the system is analyzed based on a methodology for the quantification of all

Grütter, Peter

176

Single molecule high-resolution colocalization of Cy3 and Cy5 attached to macromolecules measures  

E-Print Network [OSTI]

Single molecule high-resolution colocalization of Cy3 and Cy5 attached to macromolecules measures, 2004 Here we present a technique called single-molecule high-resolution colocalization (SHREC's lower resolution limit lies at the upper resolution limit of single molecule FRET (smFRET) microscopy

Spudich, James A.

177

High Resolution Timing with Low Resolution Clocks A Microsecond Resolution Timer for Sun Workstations  

E-Print Network [OSTI]

High Resolution Timing with Low Resolution Clocks and A Microsecond Resolution Timer for Sun for Sun 3 and Sun 4 workstations1. One can measure average service times without a high resolution clock?" 1. Introduction - Who Needs a Microsecond Clock Beginning with its Sun 3 workstations, Sun

Melvin, Stephen

178

RAIN AND WIND ESTIMATION FROM SEAWINDS IN HURRICANES AT ULTRA HIGH RESOLUTION  

E-Print Network [OSTI]

function (GMF) which relates wind to backscatter (0 ) is not well understood for extremely high wind speedsRAIN AND WIND ESTIMATION FROM SEAWINDS IN HURRICANES AT ULTRA HIGH RESOLUTION Brent A. Williams method for estimating wind and rain in hurricanes from SeaWinds at ultra-high resolution is developed. We

Long, David G.

179

Optical system for high resolution spectrometer/monochromator  

DOE Patents [OSTI]

An optical system for use in a spectrometer or monochromator employing a mirror which reflects electromagnetic radiation from a source to converge with same in a plane is disclosed. A straight grooved, varied-spaced diffraction grating receives the converging electromagnetic radiation from the mirror and produces a spectral image for capture by a detector, target or like receiver. 11 figs.

Hettrick, M.C.; Underwood, J.H.

1988-10-11T23:59:59.000Z

180

PARAMETERISATION OF POINT BARS IN HIGH-RESOLUTION SEISMIC DATA  

E-Print Network [OSTI]

, L.J. van VLIET 2 1 Department of Geotechnology, Delft University of Technology, 2628RX Delft, The Netherlands 2 Quantitative Imaging Group, Delft University of Technology, The Netherlands Introduction We fluvial point bar in a meander loop (Coesewijne River, Suriname); b) The two-circle model whose

van Vliet, Lucas J.

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

A High Resolution Monolithic Crystal, DOI, MR Compatible, PET Detector  

SciTech Connect (OSTI)

The principle objective of this proposal is to develop a positron emission tomography (PET) detector with depth-of-interaction (DOI) positioning capability that will achieve state of the art spatial resolution and sensitivity performance for small animal PET imaging. When arranged in a ring or box detector geometry, the proposed detector module will support <1 mm3 image resolution and >15% absolute detection efficiency. The detector will also be compatible with operation in a MR scanner to support simultaneous multi-modality imaging. The detector design will utilize a thick, monolithic crystal scintillator readout by a two-dimensional array of silicon photomultiplier (SiPM) devices using a novel sensor on the entrance surface (SES) design. Our hypothesis is that our single-ended readout SES design will provide an effective DOI positioning performance equivalent to more expensive dual-ended readout techniques and at a significantly lower cost. Our monolithic crystal design will also lead to a significantly lower cost system. It is our goal to design a detector with state of the art performance but at a price point that is affordable so the technology can be disseminated to many laboratories. A second hypothesis is that using SiPM arrays, the detector will be able to operate in a MR scanner without any degradation in performance to support simultaneous PET/MR imaging. Having a co-registered MR image will assist in radiotracer localization and may also be used for partial volume corrections to improve radiotracer uptake quantitation. The far reaching goal of this research is to develop technology for medical research that will lead to improvements in human health care.

Robert S Miyaoka

2012-03-06T23:59:59.000Z

182

High-resolution spectrometer design using spherically curved crystals  

SciTech Connect (OSTI)

A Bragg crystal spectrometer that has a quartz crystal elastically bent into a segment of a sphere has been successfully constructed and calibrated. The principal advantage of the spherical surface over a cylindrical surface is an increase of almost 3 orders of magnitude in spectral intensity, with no corresponding loss in resolving power. This optical system also possesses good imaging properties. The precision components used in constructing the spectrometer are inexpensive and readily available.

Thoe, R.

1986-09-01T23:59:59.000Z

183

Subsurface connection methods for subsurface heaters  

DOE Patents [OSTI]

A system for heating a subsurface formation is described. The system includes a first elongated heater in a first opening in the formation. The first elongated heater includes an exposed metal section in a portion of the first opening. The portion is below a layer of the formation to be heated. The exposed metal section is exposed to the formation. A second elongated heater is in a second opening in the formation. The second opening connects to the first opening at or near the portion of the first opening below the layer to be heated. At least a portion of an exposed metal section of the second elongated heater is electrically coupled to at least a portion of the exposed metal section of the first elongated heater in the portion of the first opening below the layer to be heated.

Vinegar, Harold J. (Bellaire, TX); Bass, Ronald Marshall (Houston, TX); Kim, Dong Sub (Sugar Land, TX); Mason, Stanley Leroy (Allen, TX); Stegemeier, George Leo (Houston, TX); Keltner, Thomas Joseph (Spring, TX); Carl, Jr., Frederick Gordon (Houston, TX)

2010-12-28T23:59:59.000Z

184

Visualization of High Resolution Spatial Mass Spectrometric Data during Acquisition  

SciTech Connect (OSTI)

Mass Spectrometric Imaging (IMS) allows the generation of 2D ion density maps that help visualize molecules present in sections of tissues and cells. The combination of spatial and mass resolution results in large and complex data sets that require powerful and efficient analysis and interpretation. In this paper, a graphical user interface (GUI) that can visualize the large data during data acquisition itself is presented. The program also has the ability to perform processing and analysis of the dataset. The various functions of the GUI including visualization of mass spectra, generation of 2D maps for selected species, manipulation of the heat maps, and peak identification are also presented.

Thomas, Mathew; Heath, Brandi S.; Laskin, Julia; Li, Dongsheng; Liu, Ellen C.; Hui, Katrina L.; Kuprat, Andrew P.; Kleese van Dam, Kerstin; Carson, James P.

2012-08-28T23:59:59.000Z

185

A High Resolution, Light-Weight, Synthetic Aperture Radar for UAV Application  

SciTech Connect (OSTI)

(U) Sandia National Laboratories in collaboration with General Atomics (GA) has designed and built a high resolution, light-weight, Ku-band Synthetic Aperture Radar (SAR) known as "Lynx". Although Lynx can be operated on a wide variety of manned and unmanned platforms, its design is optimized for use on medium altitude Unmanned Aerial Vehicles (UAVS). In particular, it can be operated on the Predator, I-GNAT, and Prowler II platforms manufactured by GA. (U) The radar production weight is less than 120 lb and operates within a 3 GHz band from 15.2 GHz to 18.2 GHz with a peak output power of 320 W. Operating range is resolution and mode dependent but can exceed 45 km in adverse weather (4 mm/hr rain). Lynx has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode, over substantial depression angles (5 to 60 deg) and squint angles (broadside ±45 deg). Real-time Motion Compensation is implemented to allow high-quality image formation even during vehicle turns and other maneuvers.

Doerry, A.W.; Hensley, W.H.; Stence, J.; Tsunoda, S.I. Pace, F.; Walker, B,C.; Woodring, M.

1999-05-27T23:59:59.000Z

186

Optical analysis of an ultra-high resolution two-mirror soft x-ray microscope  

Science Journals Connector (OSTI)

Promoted by the successful application of multilayer coated optics in soft x-ray imaging experiments in solar physics and projection lithography, several groups have designed, analyzed, fabricated, and are testing Schwarzschild multilayer soft x-ray microscopes. Simulations have indicated that diffraction limited performance of a spherical Schwarzschild microscope operating near 100 Å will be limited to systems with a small numerical aperture of approximately 0.15 and a corresponding resolution, based on the Rayleigh criterion, of 3.3 times the wavelength of the incident radiation. In principle, a two aspherical mirror Head microscope, which satisfies the constant optical path length condition and the Abbé sine condition, should achieve diffraction limited performance for very large numerical apertures. For a practical soft x-ray microscope, surface contour errors, microroughness, reflectance of multilayer coatings, and variation of the angle of incidence over the multilayer substrates become significant factors in degrading system resolution and must be controlled before an ultra-high resolution, two-mirror microscope will be realized. For a 30x reflecting microscope with a numerical aperture ranging from 0.15 to 0.35, the effects on resolution of surface contour errors, tilts, and misalignments of the optics have been studied. Graded spacing of the multilayer coatings on the mirror substrates are required of a fast, two-mirror microscope.

David L. Shealy; Cheng Wang; Richard B. Hoover

1995-01-01T23:59:59.000Z

187

High-resolution observations of active region moss and its dynamics  

E-Print Network [OSTI]

The \\textit{High resolution Coronal Imager (Hi-C)} has provided the sharpest view of the EUV corona to date. In this paper we exploit its impressive resolving power to provide the first analysis of the fine-scale structure of moss in an active region. The data reveal that the moss is made up of a collection of fine threads, that have widths with a mean and standard deviation of $440\\pm190$~km (Full Width Half Maximum). {The brightest moss emission is located at the visible head of the fine-scale structure and the fine structure appears to extend into the lower solar atmosphere.} The emission decreases along the features implying the lower sections are most likely dominated by cooler transition region plasma. These threads appear to be the cool, lower legs of the hot loops. In addition, the increased resolution allows for the first direct observation {of physical displacements of the moss fine-structure in a direction transverse to its central axis. Some of these transverse displacements demonstrate periodic b...

Morton, R J

2014-01-01T23:59:59.000Z

188

Application of spatially resolved high resolution crystal spectrometry to inertial confinement fusion plasmas  

SciTech Connect (OSTI)

High resolution ({lambda}/{Delta}{lambda}{approx} 10 000) 1D imaging x-ray spectroscopy using a spherically bent crystal and a 2D hybrid pixel array detector is used world wide for Doppler measurements of ion-temperature and plasma flow-velocity profiles in magnetic confinement fusion plasmas. Meter sized plasmas are diagnosed with cm spatial resolution and 10 ms time resolution. This concept can also be used as a diagnostic of small sources, such as inertial confinement fusion plasmas and targets on x-ray light source beam lines, with spatial resolution of micrometers, as demonstrated by laboratory experiments using a 250-{mu}m {sup 55}Fe source, and by ray-tracing calculations. Throughput calculations agree with measurements, and predict detector counts in the range 10{sup -8}-10{sup -6} times source x-rays, depending on crystal reflectivity and spectrometer geometry. Results of the lab demonstrations, application of the technique to the National Ignition Facility (NIF), and predictions of performance on NIF will be presented.

Hill, K. W.; Bitter, M.; Delgado-Aparacio, L.; Pablant, N. A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Beiersdorfer, P.; Schneider, M.; Widmann, K. [Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Sanchez del Rio, M. [European Synchrotron Radiation Facility, BP 220, 38043-Grenoble Cedex (France); Zhang, L. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)

2012-10-15T23:59:59.000Z

189

The Portland Hills Fault: uncovering a hidden fault in Portland, Oregon using high-resolution geophysical methods  

Science Journals Connector (OSTI)

The Portland metropolitan area historically is the most seismically active region in Oregon. At least three potentially active faults are located in the immediate vicinity of downtown Portland, with the Portland Hills Fault (PHF) extending directly beneath downtown Portland. The faults are poorly understood, and the surface geologic record does not provide the information required to assess the seismic hazards associated with them. The limited geologic information stems from a surface topography that has not maintained a cumulative geologic record of faulting, in part, due to rapid erosion and deposition from late Pleistocene catastrophic flood events and a possible strike-slip component of the faults. We integrated multiple high-resolution geophysical techniques, including seismic reflection, ground penetrating radar (GPR), and magnetic methods, with regional geological and geophysical surveys to determine that the Portland Hills Fault is presently active with a zone of deformation that extends at least 400 m. The style of deformation is consistent with at least two major earthquakes in the last 12–15 ka, as confirmed by a sidehill excavation trench. High-resolution geophysical methods provide detailed images of the upper 100 m across the active fault zone. The geophysical images are critical to characterizing the structural style within the zone of deformation, and when integrated with a paleoseismic trench, can accurately record the seismic history of a region with little surface geologic exposure.

Lee M. Liberty; Mark A. Hemphill-Haley; Ian P. Madin

2003-01-01T23:59:59.000Z

190

Subsurface contaminants focus area  

SciTech Connect (OSTI)

The US Department of Enregy (DOE) Subsurface Contaminants Focus Area is developing technologies to address environmental problems associated with hazardous and radioactive contaminants in soil and groundwater that exist throughout the DOE complex, including radionuclides, heavy metals; and dense non-aqueous phase liquids (DNAPLs). More than 5,700 known DOE groundwater plumes have contaminated over 600 billion gallons of water and 200 million cubic meters of soil. Migration of these plumes threatens local and regional water sources, and in some cases has already adversely impacted off-site rsources. In addition, the Subsurface Contaminants Focus Area is responsible for supplying technologies for the remediation of numerous landfills at DOE facilities. These landfills are estimated to contain over 3 million cubic meters of radioactive and hazardous buried Technology developed within this specialty area will provide efective methods to contain contaminant plumes and new or alternative technologies for development of in situ technologies to minimize waste disposal costs and potential worker exposure by treating plumes in place. While addressing contaminant plumes emanating from DOE landfills, the Subsurface Contaminants Focus Area is also working to develop new or alternative technologies for the in situ stabilization, and nonintrusive characterization of these disposal sites.

NONE

1996-08-01T23:59:59.000Z

191

High resolution properties of the marine atmospheric boundary layer  

SciTech Connect (OSTI)

Los Alamos National Laboratory (LANL) participated in the Central Equatorial Pacific Experiment (CEPEX) by fielding a water-vapor Raman lidar on board the Research Vessel Vickers. The lidar measured water vapor concentration from the surface to lower tropospheric altitudes in order to support the CEPEX goal of evaluating a hypothesis regarding feedback mechanisms for global circulation models. This report describes some of the features observed within the marine Atmospheric Boundary Layer (ABL) and the lower troposphere. Data was collected continuously 24 hours per day over the equatorial Pacific from March 8th to March 2 1st of 1993 while in route between Guadalcanal and Christmas Island (the transect was at approximately 2{degree} south latitude). The lidar collected vertical transects of water vapor concentration up to 10 km during night operations and 4 km in the day. The vertical lidar profiles of water vapor were produced by summing the data over a period up to 600 seconds. The water-vapor Raman lidar measured the properties of the marine ABL as well as the lower and mid-troposphere. From the lidar water vapor profiles, ``images`` of water vapor concentration versus altitude and date or sea surface temperature will be produced along with other products such as latent heat fluxes. The Raman water vapor lidar data will be used to better understand the role of transport and exchange at the ocean-atmosphere interface and throughout the marine atmosphere.

Cooper, D.; Cottingame, W.; Eichinger, W.; Forman, P.; Lebeda, C.; Poling, D.; Thorton, R.

1994-02-01T23:59:59.000Z

192

Merging high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon  

Broader source: Energy.gov [DOE]

DOE Geothermal Technologies Peer Review - 2010. The primary objective of this project is to combine a suite of high resolution geophysical and geochemical techniques to reduce exploration risk by characterizing hydrothermal alteration, fault geometries and relationships.

193

Time-series analysis of high-resolution ebullition fluxes from a stratified, freshwater lake  

E-Print Network [OSTI]

[1] Freshwater lakes can emit significant quantities of methane to the atmosphere by bubbling. The high spatial and temporal heterogeneity of ebullition, combined with a lack of high-resolution field measurements, has made ...

Varadharajan, Charuleka

194

The North Atlantic Subpolar Gyre in Four High-Resolution Models  

Science Journals Connector (OSTI)

The authors present the first quantitative comparison between new velocity datasets and high-resolution models in the North Atlantic subpolar gyre [1/10° Parallel Ocean Program model (POPNA10), Miami Isopycnic Coordinate Ocean Model (MICOM), ?° ...

A. M. Treguier; S. Theetten; E. P. Chassignet; T. Penduff; R. Smith; L. Talley; J. O. Beismann; C. Böning

2005-05-01T23:59:59.000Z

195

High-Resolution Characterization of Reservoir Heterogeneity and Connectivity in Clastic Environments  

E-Print Network [OSTI]

This study developed new concepts and interpretative methods for mapping reservoir heterogeneity and connectivity of a fault controlled Wilcox clastic reservoir in Texas, USA. The application of high-resolution seismic enhancement in this study...

Hull, Thomas Frederick

2011-10-21T23:59:59.000Z

196

High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy  

E-Print Network [OSTI]

the Photosynthetic Mn 4 Ca Catalyst from X-ray Spectroscopystructure of the Mn 4 Ca catalyst at high-resolution whichthe structure of Mn 4 Ca catalyst as it cycles through the

Yano, Junko

2008-01-01T23:59:59.000Z

197

Methodology and applications of high resolution solid-state NMR to structure determination of proteins  

E-Print Network [OSTI]

A number of methodological developments and applications of solid-state NMR for assignment and high resolution structure determination of microcrystalline proteins and amyloid fibrils are presented. Magic angle spinning ...

Lewandowski, Józef Romuald

2008-01-01T23:59:59.000Z

198

Convective Cells in Altocumulus Observed with a High-Resolution Radar  

Science Journals Connector (OSTI)

Very-high-resolution Doppler radar observations are used together with aircraft measurements to document the dynamic and thermodynamic structure of a dissipating altocumulus cloud system associated with a deep virga layer. The cloud layer ...

Jerome M. Schmidt; Piotr J. Flatau; Robert D. Yates

2014-06-01T23:59:59.000Z

199

Atmospheric Kinetic Energy Spectra from Global High-Resolution Nonhydrostatic Simulations  

Science Journals Connector (OSTI)

Kinetic energy (KE) spectra derived from global high-resolution atmospheric simulations from the Model for Prediction Across Scales (MPAS) are presented. The simulations are produced using quasi-uniform global Voronoi horizontal meshes with 3-, ...

William C. Skamarock; Sang-Hun Park; Joseph B. Klemp; Chris Snyder

2014-11-01T23:59:59.000Z

200

HIGH-RESOLUTION EPR AND PIEZOSPECTROSCOPY STUDIES OF THE LITHIUM-OXYGEN DONOR IN GERMANIUM  

E-Print Network [OSTI]

LCL-8429 HIGH-RESOLUTION EPR AND PIEZOSPECTROSCOPY STUDIESLBL-8429 •^^. -r-i^irjION EPR AND PIEZOSPECTROSCOPY STUDIESBOO X V X. X. X. X x V N The EPR and IR spectra of Li-0 can

Haller, E.E.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

NESTED HIGH RESOLUTION SIMULATION AND LIDAR VALIDATION OF A LAND BREEZE CIRCULATION  

E-Print Network [OSTI]

NESTED HIGH RESOLUTION SIMULATION AND LIDAR VALIDATION OF A LAND BREEZE CIRCULATION by GIJS DE BOER local forcing. A wide range of scales is simulated using the nesting capability of the University

Eloranta, Edwin W.

202

High Resolution X-Ray Scattering at Sector 3, Advanced Photon...  

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

Sector 3 Beamlines Staff Publications Conferences IXN group Sector 3 : High Resolution X-ray Scattering Sector 3 is operated by the Inelastic X-ray Nuclear Resonant Scattering...

203

NREL GIS Data: Hawaii High Resolution Photovoltaic | OpenEI  

Open Energy Info (EERE)

Photovoltaic Photovoltaic Dataset Summary Description Abstract - Monthly and annual average solar resource potential for the State of Hawaii. Purpose - Provide information on the solar resource potential for Hawaii. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. Supplemental Info - This data provides monthly average and annual average daily total solar resource averaged over surface cells of 0.1 degrees in both latitude and longitude, or about 10 km in size. This data was developed using the State University of New York/Albany satellite radiation model. This model was developed by Dr. Richard Perez and collaborators at the National Renewable Energy Laboratory and other universities for the U.S. Department of Energy. Specific information about this model can be found in Perez, et al. (2002). This model uses hourly radiance images from geostationary weather satellites, daily snow cover data, and monthly averages of atmospheric water vapor, trace gases, and the amount of aerosols in the atmosphere to calculate the hourly total insolation (sun and sky) falling on a horizontal surface. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalable at a 10km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

204

Work-function measurement by high-resolution scanning Kelvin nanoprobe  

Science Journals Connector (OSTI)

Nanoscience promises to transform today's world in the same way that integrated semiconductor devices transformed the world of electronics and computation. In the post-genomic era, the greatest challenge is to make connections between the structures and functions of biomolecules at the nanometre-scale level in order to underpin the understanding of larger scale systems in the fields of human biology and physiology. To achieve this, instruments with new capabilities need to be researched and developed, with particular emphasis on new levels of sensitivity, precision and resolution for biomolecular analysis. This paper describes an instrument able to analyse structures that range from tenths of a nanometre (proteins, DNA) to micron-scale structures (living cells), which can be investigated non-destructively in their normal state and subsequently in chemical- or biochemical-modified conditions. The high-resolution scanning Kelvin nanoprobe (SKN) measures the work-function changes at molecular level, instigated by local charge reconfiguration due to translational motion of mobile charges, dipolar relaxation of bound charges, interfacial polarization and structural and conformational modifications. In addition to detecting surface electrical properties, the instrument offers, in parallel, the surface topographic image, with nanometre resolution. The instrument can also be used to investigate subtle work function/topography variations which occur in, for example, corrosion, contamination, adsorption and desorption of molecules, crystallographic studies, mechanical stress studies, surface photovoltaic studies, material science, biocompatibility studies, microelectronic characterization in semiconductor technology, oxide and thin films, surface processing and treatments, surfaces and interfaces characterization. This paper presents the design and development of the instrument, the basic principles of the method and the challenges involved to achieve nanometric resolution and sub-millivolt sensitivity, for both the topographic imaging of surface micromorphology and surface potential and work-function determination.

Larisa-Emilia Cheran; Sherri Johnstone; Saman Sadeghi; Michael Thompson

2007-01-01T23:59:59.000Z

205

Surfactants and subsurface remediation  

SciTech Connect (OSTI)

Because of the limitations of pump-and-treat technology, attention is now focused on the feasibility of surfactant use to increase its efficiency. Surfactants have been studied for use in soil washing and enhanced oil recovery. Although similarities exist between the applications, there are significant differences in the objectives of the technologies and the limitations placed on surfactant use. In this article we review environmental studies concerned with the fate and transport of surface-active compounds in the subsurface environment and discuss key issues related to their successful use for in situ aquifer remediation, particularly with respect to nonaqueous-phase liquids.

West, C.C.; Harwell, J.H.

1992-01-01T23:59:59.000Z

206

EMSL - Subsurface Flow and Transport  

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

carbonate (CaCO3) geochemical reactions exert a fundamental control on the evolution of porosity and permeability in shallow-to-deep subsurface siliciclastic and limestone rock...

207

Subsurface Flow and Transport | EMSL  

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

subsurface related to contaminant transport, carbon cycling, enhanced oil recovery and carbon dioxide sequestration. Resources and Techniques Users have access to all the...

208

Subsurface Flow and Transport | EMSL  

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

and compare experimental and numerical results to address the nation's most challenging problems in the subsurface related to contaminant transport, carbon cycling, enhanced oil...

209

Exploring electronic structure through high-resolution hard x-ray  

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

Exploring electronic structure through high-resolution hard x-ray Exploring electronic structure through high-resolution hard x-ray spectroscopies Tuesday, July 23, 2013 - 11:00am SLAC, Conference Room 137-322 Presented by Dimosthenis Sokaras, Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory Modern high brilliance beamlines coupled with recent advances in hard-x-ray optics are establishing high-resolution hard x-ray spectroscopies as a powerful analytical tool for routine electronic structure investigations. Their advantageous characteristics like the chemical sensitivity or the hard x-rays penetration depth, that permits the implementation of difficult sample environments, expand the applicability of the relevant studies to multidisciplinary scientific fields. Simultaneously, the experimental

210

Production of High Resolution Irradiance Data for Central America and Cuba  

Open Energy Info (EERE)

Production of High Resolution Irradiance Data for Central America and Cuba Production of High Resolution Irradiance Data for Central America and Cuba Dataset Summary Description (Abstract): The main object of the SUNY task for SWERA is to prepare high resolution global irradiance (GHI) and direct irradiance (DNI) data sets for the countries of Cuba, El Salvador, Guatemala, Honduras and Nicaragua.Much of our initial effort focused on building up the satellite data tx_metadatatool, and in strengthening and validating the models capable of converting that data into ground surface irradiances. Three research articles, acknowledging all or partial funding from UNEP & SWERA have been published on this subject. (Purpose): SWERA documentation Source SUNY Albany Date Released July 31st, 2003 (11 years ago) Date Updated August 29th, 2003 (11 years ago)

211

Exoplanet Science with the European Extremely Large Telescope. The Case for Visible and Near-IR Spectroscopy at High Resolution  

E-Print Network [OSTI]

Exoplanet science is booming. In 20 years our knowledge has expanded considerably, from the first discovery of a Hot Jupiter, to the detection of a large population of Neptunes and super-Earths, to the first steps toward the characterization of exoplanet atmospheres. Between today and 2025, the field will evolve at an even faster pace with the advent of several space-based transit search missions, ground-based spectrographs, high-contrast imaging facilities, and the James Webb Space Telescope. Especially the ESA M-class PLATO mission will be a game changer in the field. From 2024 onwards, PLATO will find transiting terrestrial planets orbiting within the habitable zones of nearby, bright stars. These objects will require the power of Extremely Large Telescopes (ELTs) to be characterized further. The technique of ground-based high-resolution spectroscopy is establishing itself as a crucial pathway to measure chemical composition, atmospheric structure and atmospheric circulation in transiting exoplanets. A hig...

Udry, S; Bouchy, F; Cameron, A Collier; Henning, T; Mayor, M; Pepe, F; Piskunov, N; Pollacco, D; Queloz, D; Quirrenbach, A; Rauer, H; Rebolo, R; Santos, N C; Snellen, I; Zerbi, F

2014-01-01T23:59:59.000Z

212

Direct observation of the intergrown {alpha}-phase in {beta}-TmAlB{sub 4} via high-resolution electron microscopy  

SciTech Connect (OSTI)

A TmAlB{sub 4} crystal with a ThMoB{sub 4}-type ({beta}-type) structure phase related to a hexagonal AlB{sub 2}-type structure was studied by electron diffraction and high-resolution electron microscopy. A high-resolution image clearly exhibits an intergrown lamellar structure of a YCrB{sub 4}-type ({alpha}-type) phase in the matrix of the {beta}-type phase in TmAlB{sub 4} crystal. The lamellar structure can be characterized by a tiling of deformed hexagons, which are a common structure unit in the {alpha}-type and {beta}-type structures. The intergrown nanostructure is considered to be attributed to the origin of low temperature anomalies in physical properties.

Yubuta, Kunio, E-mail: yubuta@imr.tohoku.ac.jp [Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Mori, Takao [International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044 (Japan); Leithe-Jasper, Andreas; Grin, Yuri [Max-Plank-Institut fuer Chemische Physik fester Stoeffe, 01187 Dresden (Germany); Okada, Shigeru [Department of Science and Engineering, Kokushikan University, Tokyo 154-8515 (Japan); Shishido, Toetsu [Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan)

2009-08-05T23:59:59.000Z

213

North Brazil Current rings and transport of southern waters in a high resolution numerical  

E-Print Network [OSTI]

North Brazil Current rings and transport of southern waters in a high resolution numerical of the North Brazil Current (NBC) retroflection and North Brazil Current rings. The model mean and seasonal circulation feature near the western boundary is the North Brazil Current (NBC), which has sources

214

FLUX-GRADIENT AND SOURCE TERM BALANCING FOR CERTAIN HIGH RESOLUTION SHOCK-CAPTURING SCHEMES  

E-Print Network [OSTI]

generation. Key Words: shallow water equations, high resolution shock capturing schemes, conservation Introduction Many practical problems involving shallow water flow in oceanography and atmospheric sciences in [8], for the shallow water system. We show that the use of two different Jacobians at cell interfaces

215

A ber-optic based calibration system for the High Resolution Fly's Eye  

E-Print Network [OSTI]

A ber-optic based calibration system for the High Resolution Fly's Eye cosmic ray observatory J, 800 Yale Blvd NE, Albuquerque, NM 87131-1156 Abstract This article describes the ber-optic based: Highest energy cosmic rays Fly's Eye Experiment HiRes YAG Laser Fiber-optics PMT PACS: 95.45.+i 95.85.Ls

216

Spatially-varying SAR models and Bayesian Inference for High-Resolution Lattice Data  

E-Print Network [OSTI]

Spatially-varying SAR models and Bayesian Inference for High-Resolution Lattice Data Chiranjit Inverse problems Lattice data Non-stationary random fields Satellite imagery data Sparse spatial model- lenge our modelling and computational abilities as data volumes increase. Similarly, as spatial scales

West, Mike

217

Rendering glints on high-resolution normal-mapped specular surfaces  

Science Journals Connector (OSTI)

Complex specular surfaces under sharp point lighting show a fascinating glinty appearance, but rendering it is an unsolved problem. Using Monte Carlo pixel sampling for this purpose is impractical: the energy is concentrated in tiny highlights that take ... Keywords: glints, high-resolution normal maps, normal distribution functions, specular highlights

Ling-Qi Yan; Miloš Hašan; Wenzel Jakob; Jason Lawrence; Steve Marschner; Ravi Ramamoorthi

2014-07-01T23:59:59.000Z

218

Generation of high-resolution surface temperature distributions Anton A. Darhuber and Sandra M. Troiana)  

E-Print Network [OSTI]

Generation of high-resolution surface temperature distributions Anton A. Darhuber and Sandra M have performed numerical calculations to study the generation of arbitrary temperature profiles with high spatial resolution on the surface of a solid. The characteristics of steady-state distributions

Troian, Sandra M.

219

High-Resolution In Situ Analysis of Nitrate and Phosphate in the Oligotrophic Ocean  

Science Journals Connector (OSTI)

High-Resolution In Situ Analysis of Nitrate and Phosphate in the Oligotrophic Ocean ... Upon power up, the instrument will sequentially execute all commands in the current method until termination by lack of further commands or power interruption. ... The SEAS instrument was connected to a CTD and a PAR sensor, powered on deck, and lowered to 30 m depth. ...

Lori R. Adornato; Eric A. Kaltenbacher; Danielle R. Greenhow; Robert H. Byrne

2007-05-04T23:59:59.000Z

220

A Novel High-Resolution Alignment Technique for XFEL Using Undulator X-ray Beams  

E-Print Network [OSTI]

1 A Novel High-Resolution Alignment Technique for XFEL Using Undulator X-ray Beams Bingxin Yang Abstract We propose a novel alignment technique utilizing the x-ray beam of an undulator in conjunction a stable and reproducible x-ray beam axis (XBA). Targets are precisely positioned on the XBA using

Kemner, Ken

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Application of High-Temperature High-Resolution Gas Chromatography to the Analysis of ?-Cyclodextrin Derivatives  

Science Journals Connector (OSTI)

......tures such as a lower cost and higher reso lution...using enantioselective gas chromatog raphy with mass...ature high resolution gas chromatography to paraffinic deposits in petroleum production pipelines. J. High Res...Injection in Capillary Gas Chromatography; with......

Alberto dos Santos Pereira; Edson Ferreira da Silva; Francisco Radler de Aquino Neto

1998-02-01T23:59:59.000Z

222

High-resolution fracture aperture mapping using optical profilometry Pasha Ameli,1  

E-Print Network [OSTI]

High-resolution fracture aperture mapping using optical profilometry Pasha Ameli,1 Jean E. Elkhoury] Fractures play an important role in the Earth's crust, often controlling both mechanical and transport of fracture surfaces and the contacts and void spaces between fracture surfaces at high spatial resolution (10

Elkhoury, Jean

223

High-resolution forest carbon stocks and emissions in Gregory P. Asnera,1  

E-Print Network [OSTI]

High-resolution forest carbon stocks and emissions in the Amazon Gregory P. Asnera,1 , George V. N detection and ranging, and field plots, we mapped aboveground carbon stocks and emissions at 0.1-ha re emissions for REDD. We discovered previously unknown variation in carbon storage at multiple scales based

Saleska, Scott

224

Crosscutting Subsurface Initiative: Adaptive Control of Subsurface Fractures  

Broader source: Energy.gov [DOE]

The subsurface provides most of the world’s energy and offers great potential for CO2, nuclear waste, and energy storage.  Despite decades of research and recent successes in new extraction methods...

225

High-resolution seismic array imaging based on an SEM-FK hybrid method  

Science Journals Connector (OSTI)

......defined on a regular grid still presents limitations...2013) proposed a hybrid method that interfaces...studies of an SEM-FK hybrid method and its application...from Computational Infrastructure for Geodynamics...Martin R. A hybrid technique for 3-D...D. , Sen M.K. Grid dispersion and stability......

Ping Tong; Chin-wu Chen; Dimitri Komatitsch; Piero Basini; Qinya Liu

2014-01-01T23:59:59.000Z

226

Learning Scene Categories from High Resolution Satellite Image for Aerial Video Analysis  

SciTech Connect (OSTI)

Automatic scene categorization can benefit various aerial video processing applications. This paper addresses the problem of predicting the scene category from aerial video frames using a prior model learned from satellite imagery. We show that local and global features in the form of line statistics and 2-D power spectrum parameters respectively can characterize the aerial scene well. The line feature statistics and spatial frequency parameters are useful cues to distinguish between different urban scene categories. We learn the scene prediction model from highresolution satellite imagery to test the model on the Columbus Surrogate Unmanned Aerial Vehicle (CSUAV) dataset ollected by high-altitude wide area UAV sensor platform. e compare the proposed features with the popular Scale nvariant Feature Transform (SIFT) features. Our experimental results show that proposed approach outperforms te SIFT model when the training and testing are conducted n disparate data sources.

Cheriyadat, Anil M [ORNL] [ORNL

2011-01-01T23:59:59.000Z

227

High-resolution crosswell imaging of a west Texas carbonate reservoir. Part 5: Core analysis  

SciTech Connect (OSTI)

The authors conducted a core analysis program to provide supporting data to a series of crosswell field experiments being carried out in McElroy Field by Stanford University`s Seismic Tomography Project. The objective of these experiments is to demonstrate the use of crosswell seismic profiling for reservoir characterization and for monitoring CO{sub 2} flooding. For these west Texas carbonates, they estimate that CO{sub 2} saturation causes P-wave velocity to change by {minus}1.9% (pooled average, range = {minus}6.3 to +0.1%), S-wave velocity by +0.6% (range = 0 to 2.7%), and the P-to-S velocity ratio by {minus}2.4% (range = {minus}6.4 to {minus}0.3%). When one compares these results to the precisions they can expect from traveltime tomography (about {+-} 1% for P- and S-wave velocity and about {+-} 2% for the P-to-S velocity ratio), they conclude that time-lapse traveltime tomography is sensitive enough to resolve changes in the P-wave velocity, S-wave velocity, and P-to-S velocity ratio that result from CO{sub 2} saturation. They concentrated here don the potential for CO{sub 2} saturation to affect seismic velocities. The potential for CO{sub 2} saturation to affect other seismic properties, not discussed here, may prove to be more significant (e.g., P-wave and S-wave impedance).

Nolen-Hoeksema, R.C.; Harris, J.M. [Stanford Univ., CA (United States)] [Stanford Univ., CA (United States); Wang, Z. [Chevron Petroleum Technology Co., La Habra, CA (United States)] [Chevron Petroleum Technology Co., La Habra, CA (United States); Langan, R.T. [Chevron Petroleum Technology Co., La Habra, CA (United States)] [Chevron Petroleum Technology Co., La Habra, CA (United States); [Stanford Univ., CA (United States). Geophysics Dept.

1995-05-01T23:59:59.000Z

228

The high resolution X-ray imaging detector planes for the MIRAX mission  

Science Journals Connector (OSTI)

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5–200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-masks telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm2, a large field of view (60° ? 60° FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution ( ~ 2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~ 2.1 keV @ 60 keV and 2.3 @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.

B H G Rodrigues; J E Grindlay; B Allen; J Hong; S Barthelmy; J Braga; F D'Amico; R E Rothschild

2013-01-01T23:59:59.000Z

229

The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission  

E-Print Network [OSTI]

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment ...

Rodrigues, Barbara H G; Allen, Branden; Hong, Jaesub; Barthelmy, Scott; Braga, Joao; D'Amico, Flavio; Rothschild, Richard E

2013-01-01T23:59:59.000Z

230

The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission  

E-Print Network [OSTI]

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~2.1 keV @ 60 keV and ~2.3 keV @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.

Barbara H. G. Rodrigues; Jonathan E. Grindlay; Branden Allen; Jaesub Hong; Scott Barthelmy; Joao Braga; Flavio D'Amico; Richard E. Rothschild

2013-08-14T23:59:59.000Z

231

High-resolution velocity field imaging around a borehole: Excavation Damaged Zone characterization  

E-Print Network [OSTI]

in the laboratory offers a large number of boreholes. These boreholes form linear excavations with a perfectly round to deploy significant resources with a large number of sensors and boreholes (Balland et al, 2009). Instead induced around a borehole drilled for survey purposes. This would involve the installation of several

Boyer, Edmond

232

Graphene Nanopore Support System for Simultaneous High-Resolution AFM Imaging and Conductance Measurements  

Science Journals Connector (OSTI)

Laura S. Connelly †§, Brian Meckes ‡, Joseph Larkin ?, Alan L. Gillman ‡, Meni Wanunu ?, and Ratnesh Lal *†‡§ ...

Laura S. Connelly; Brian Meckes; Joseph Larkin; Alan L. Gillman; Meni Wanunu; Ratnesh Lal

2014-02-28T23:59:59.000Z

233

High-resolution imaging of microvasculature in human skin in-vivo with optical coherence tomography  

E-Print Network [OSTI]

using swept-source optical coherence tomography,” Opt. Lett.J. G. Fujimoto, “Optical coherence tomography,” Science 254(volumes using optical coherence tomography,” Opt. Lett. 22(

Liu, Gangjun; Jia, Wangcun; Sun, Victor; Choi, Bernard; Chen, Zhongping

2012-01-01T23:59:59.000Z

234

High-resolution imaging of latch-up sites in CMOS IC  

E-Print Network [OSTI]

15 16 16 17 17 18 19 20 V A. Process Techniques 1. Retrograde Wells . 2. Minority Carrier Lifetime Reduction 3. Schottky Barrier Source/Drain 4. Trench Isolation B. Layout Techniques 1. Minority and Majority Carrier Guards . . 2... Transistors in CMOS SCR I-V Characteristics Model Development Lumped Element Model Simplified Model P+ Overvoltage Triggered Latchup 14 Avalanche Trigerred Latchup Latchup Triggered by Punchthrough Photocurrents Excitation 15 18 10 Schottky Barrier...

Shah, Mayank

2012-06-07T23:59:59.000Z

235

Cardiac dysfunction in the diabetic rat: quantitative evaluation using high resolution magnetic resonance imaging  

E-Print Network [OSTI]

Background: Diabetes is a major risk factor for cardiovascular disease. In particular, type 1 diabetes compromises the cardiac function of individuals at a relatively early age due to the protracted course of abnormal ...

Loganathan, Rajprasad; Bilgen, Mehmet; Al-Hafez, Baraa; Alenezy, Mohammed D.; Smirnova, Irina V.

2006-04-04T23:59:59.000Z

236

Optimal joule heating of the subsurface  

DOE Patents [OSTI]

A method for simultaneously heating the subsurface and imaging the effects of the heating is disclosed. This method combines the use of tomographic imaging (electrical resistance tomography or ERT) to image electrical resistivity distribution underground, with joule heating by electrical currents injected in the ground. A potential distribution is established on a series of buried electrodes resulting in energy deposition underground which is a function of the resistivity and injection current density. Measurement of the voltages and currents also permits a tomographic reconstruction of the resistivity distribution. Using this tomographic information, the current injection pattern on the driving electrodes can be adjusted to change the current density distribution and thus optimize the heating. As the heating changes conditions, the applied current pattern can be repeatedly adjusted (based on updated resistivity tomographs) to affect real time control of the heating.

Berryman, J.G.; Daily, W.D.

1994-07-05T23:59:59.000Z

237

High-resolution gamma-ray measurement systems using a compact electro- mechanically cooled detector system and intelligent software  

SciTech Connect (OSTI)

Obtaining high-resolution gamma-ray measurements using high-purity germanium (HPGe) detectors in the field has been of limited practicality due to the need to use and maintain a supply of liquid nitrogen (LN{sub 2}). This same constraint limits high-resolution gamma measurements in unattended safeguards or treaty Verification applications. We are developing detectors and software to greatly extend the applicability of high-resolution germanium-based measurements for these situations.

Buckley, W.M.; Carlson, J.B.; Neufeld, K.W.

1995-09-27T23:59:59.000Z

238

Maintaining Subsurface Drip Irrigation Systems  

E-Print Network [OSTI]

A subsurface drip irrigation system should last more than 20 years if properly maintained. Important maintenance procedures include cleaning the filters, flushing the lines, adding chlorine and injecting acids. Details of these procedures...

Enciso, Juan; Porter, Dana; Bordovsky, Jim; Fipps, Guy

2004-09-07T23:59:59.000Z

239

High-resolution crystal structures of two crystal forms of human cyclophilin D in complex with PEG 400 molecules  

Science Journals Connector (OSTI)

High-resolution crystal structures of cyclophilin D in complex with PEG 400 in primitive orthorhombic and primitive tetragonal forms are reported.

Valasani, K.R.

2014-05-24T23:59:59.000Z

240

NREL GIS Data: Illinois High Resolution Wind Resource | OpenEI  

Open Energy Info (EERE)

Illinois High Resolution Wind Resource Illinois High Resolution Wind Resource Dataset Summary Description Abstract: Annual average wind resource potential of Illinois at a 50 meter height. Purpose: Provide information on the wind resource development potential within Illinois. Supplemental_Information: This data set was produced and validated by NREL using their WRAM model. This shapefile was generated from a raster dataset with a 1000 m resolution, in a Transverse Mercator projection with the following parameters: Projection: TRANSVERSE Zunits NO Units METERS Spheroid CLARKE1866 Xshift 0.0000000000 Yshift 0.0000000000 Parameters 1.00000000 /* scale factor at central meridian -89 30 0.000 /* longitude of central meridian 39 45 0.000 /* latitude of origin 0.00000 /* false easting (meters) 0.00000 /* false northing (meters)

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Documentation of high resolution solar resource assessment (10km) for Kenya  

Open Energy Info (EERE)

Kenya Kenya provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Kenya provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

242

NREL GIS Data: U.S. Hawaii Offshore Windspeed 90m Height High Resolution |  

Open Energy Info (EERE)

Hawaii Offshore Windspeed 90m Height High Resolution Hawaii Offshore Windspeed 90m Height High Resolution Dataset Summary Description This dataset is a geographic shapefile generated from the original raster data. The original raster data resolution is a 200-meter cell size. The data provide an estimate of annual average wind speed at 90 meter height above surface for specific offshore regions of the United States. To learn more, please see the Assessment of Offshore Wind Energy Resources for the United States. These data were produced in cooperation with U.S. Department of Energy, and have been validated by NREL. To download state wind resource maps, visit Wind Powering America. In order to ensure the downloadable shapefile is current, please compare the date updated on this page to the last updated date on the NREL GIS Wind Data webpage.

243

Documentation of high resolution solar resource assessment (10km) for Nepal  

Open Energy Info (EERE)

Nepal Nepal provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Nepal provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2002 and 2003. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

244

NREL GIS Data: Minnesota High Resolution Wind Resource | OpenEI  

Open Energy Info (EERE)

Minnesota High Resolution Wind Resource Minnesota High Resolution Wind Resource Dataset Summary Description Abstract: Annual average wind resource potential for Minnesota at a 50 meter height. Purpose: Provide information on the wind resource development potential in Minnesota. Supplemental_Information: This data set has been validated by NREL and wind energy meteorological consultants. However, the data is not suitable for micro-siting potential development projects. Data from http://www.state.mn.us/portal/mn/jsp/content.do?contentid=536887066&contenttype=EDITORIAL&agency=Commerce average the 30 and 80 m wind speed values and then converted it to power density assuming a Weibull K of 2.0 and using elevation to estimate air density. Other_Citation_Details: This map has been validated with available surface data by NREL and wind energy meteorological consultants.

245

NREL GIS Data: Indiana High Resolution Wind Resource | OpenEI  

Open Energy Info (EERE)

Indiana High Resolution Wind Resource Indiana High Resolution Wind Resource Dataset Summary Description Abstract: Annual average wind resource potential for the state of Indiana at a 50 meter height. Purpose: Provide information on the wind resource development potential within the state of Indiana. Supplemental_Information: This data set has been validated by NREL and wind energy meteorological consultants. However, the data is not suitable for micro-siting potential development projects. This shapefile was generated from a raster dataset with a 200 m resolution, in a UTM zone 16 datum WGS 84 projection system. Other_Citation_Details: The wind power resource estimates were produced by AWS TrueWind using their MesoMap system and historical weather data under contract to Wind Powering America/NREL. This map has been validated with available surface data by NREL and wind energy meteorological consultants.

246

Documentation of high resolution solar resource assessment (10km) for China  

Open Energy Info (EERE)

China China provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for China provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2002 and 2003. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

247

NREL GIS Data: New York High Resolution Wind Resource | OpenEI  

Open Energy Info (EERE)

New York High Resolution Wind Resource New York High Resolution Wind Resource Dataset Summary Description Abstract: Annual average wind resource potential for New York at a 50 meter height. Purpose: Provide information on the wind resource development potential in New York. Supplemental_Information: This data set has been validated by NREL and wind energy meteorological consultants. However, the data is not suitable for micro-siting potential development projects. This shapefile was generated from a raster dataset with a 200 m resolution, in a UTM zone 18, datum WGS 84 projection system. Other_Citation_Details: This map has been validated with available surface data by NREL and wind energy meteorological consultants. Source National Renewable Energy Laboratory (NREL) Date Released November 30th, 2003 (10 years ago)

248

High-resolution Soft-RIXS: Scientific Goals and Technical Challenges |  

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

High-resolution Soft-RIXS: Scientific Goals and Technical Challenges High-resolution Soft-RIXS: Scientific Goals and Technical Challenges Tuesday, November 22, 2011 - 3:30pm SSRL Conference Room 137-322 Giacomo Ghiringhelli, CNR/SPIN and Dipartimento di Fisica, Politecnico di Milano, Italy Visiting scholar at SIMES-Department of physics, Stanford University The interest in resonant inelastic soft x-ray scattering has been recently boosted mainly by results on high Tc superconductors and other cuprates, where orbital and magnetic excitations could be studied with unprecedented details. RIXS has thus demonstrated to be a valuable complement to inelastic neutron scattering and optical Raman scattering for the study of magnetic and electronic properties of strongly correlated 3d transition metal systems. Much of this success is due to the improvement of energy

249

Application of high-resolution geophysical methods in submarine pipeline inspection  

Science Journals Connector (OSTI)

High-resolution marine geophysical equipment employed includes single beam echo sounder (SBES), multi-beam echo sounder (MBES), sub-bottom profiler (SBP) and side scan sonar (SSS). By employing SBES, the reflection curve in shallow water reveals the real condition of pipeline; while in deep water, the reflection or diffraction curve can't reveal the real condition. Compared with SBES, MBES is characterised by intuition, efficiency and high resolution. But the same as SBES, the beam angle affects its detecting ability seriously. As for the SBP, system employing Chirp technology can detect the buried conditions of pipelines. Ship speed and water depth can affect the detection. The SSS can detect the plane position, exposed height, spanning state and pipeline trench, but buried pipelines. In order to understand the whole in-situ conditions of submarine pipeline, multiple geophysical methods should be employed.

Lai Xianghua; Ye Yincan; Pan Guofu; Li Dong

2011-01-01T23:59:59.000Z

250

Indoor and Outdoor in Situ High-Resolution Gamma Radiation Measurements in Urban Areas of Cyprus  

E-Print Network [OSTI]

In situ, high-resolution, gamma-ray spectrometry of a total number of 70 outdoor and 20 indoor representative measurements were performed in preselected, common locations of the main urban areas of Cyprus. Specific activities and gamma absorbed dose rates in air due to the naturally occurring radionuclides of Th-232 and U-238 series, and K-40 are determined and discussed. Effective dose rate to the Cyprus population due to terrestrial gamma radiation is derived directly from this work. The results obtained outdoors match very well with those derived previously by high-resolution gamma spectrometry of soil samples, which were collected from the main island bedrock surface. This implies that the construction and building materials in urban areas do not affect the external gamma dose rate; thus they are mostly of local origin. Finally, the indoor/outdoor gamma dose ratio was found to be 1.4 +- 0.5.

E. Svoukis; H. Tsertos

2006-10-02T23:59:59.000Z

251

High Resolution BPM Upgrade for the ATF Damping Ring at KEK  

E-Print Network [OSTI]

A beam position monitor (BPM) upgrade at the KEK Accelerator Test Facility (ATF) damping ring has been accomplished, carried out by a KEK/FNAL/SLAC collaboration under the umbrella of the global ILC R&D effort. The upgrade consists of a high resolution, high reproducibility read-out system, based on analog and processing, and also implements a new automatic gain error correction schema. The technical concept and realization as well as results of beam studies are presented.

Eddy, N; Fellenz, B; Gianfelice-Wendt, E; Prieto, P; Rechenmacher, R; Semenov, A; Voy, D; Wendt, M; Zhang, D; Terunuma, N; Urakawa, J

2012-01-01T23:59:59.000Z

252

Gas-Phase Molecular Dynamics: High Resolution Spectroscopy and Collision Dynamics of Transient Species  

SciTech Connect (OSTI)

This research is carried out as part of the Gas-Phase Molecular Dynamics program in the Chemistry Department at Brookhaven National Laboratory. Chemical intermediates in the elementary gas-phase reactions involved in combustion chemistry are investigated by high resolution spectroscopic tools. Production, reaction, and energy transfer processes are investigated by transient, double resonance, polarization and saturation spectroscopies, with an emphasis on technique development and connection with theory, as well as specific molecular properties.

Hall, G.E.

2011-05-31T23:59:59.000Z

253

Integrated high-resolution physical and comparative gene maps in horses  

E-Print Network [OSTI]

INTEGRATED HIGH-RESOLUTION PHYSICAL AND COMPARATIVE GENE MAPS IN HORSES A Dissertation by CANDICE LEA BRINKMEYER LANGFORD Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Bhanu P. Chowdhary Committee Members, James E. Womack Loren C...

Brinkmeyer Langford, Candice Lea

2007-04-25T23:59:59.000Z

254

Applications of high resolution ICP-AES in the nuclear industry  

SciTech Connect (OSTI)

Application of high resolution ICP-AES to selected problems of importance in the nuclear industry is a growing field. The advantages in sample preparation time, waste minimization and equipment cost are considerable. Two examples of these advantages are presented in this paper, burnup analysis of spent fuel and analysis of major uranium isotopes. The determination of burnup, an indicator of fuel cycle efficiency, has been accomplished by the determination of {sup 139}La by high resolution inductively coupled plasma atomic emission spectroscopy (HR-ICP-AES). Solutions of digested samples of reactor fuel rods were introduced into a shielded glovebox housing an inductively coupled plasma (ICP) and the resulting atomic emission transmitted to a high resolution spectrometer by a 31 meter fiber optic bundle. Total and isotopic U determination by thermal ionization mass spectrometry (TIMS) is presented to allow for the calculation of burnup for the samples. This method of burnup determination reduces the time, material, sample handling and waste generated associated with typical burnup determinations which require separation of lanthanum from the other fission products with high specific activities. Work concerning an alternative burnup indicator, {sup 236}U, is also presented for comparison. The determination of {sup 235}U:{sup 238}U isotope ratios in U-Zr fuel alloys is also presented to demonstrate the versatility of HR-ICP-AES.

Johnson, S.G.; Giglio, J.J.; Goodall, P.S.; Cummings, D.G.

1998-07-01T23:59:59.000Z

255

Recommended isolated-line profile for representing high-resolution spectroscopic transitions (IUPAC Technical Report)  

E-Print Network [OSTI]

The report of an IUPAC Task Group, formed in 2011 on "Intensities and line shapes in high-resolution spectra of water isotopologues from experiment and theory" (Project No. 2011-022-2-100), on line profiles of isolated high-resolution rotational-vibrational transitions perturbed by neutral gas-phase molecules is presented. The well-documented inadequacies of the Voigt profile (VP), used almost universally by databases and radiative-transfer codes, to represent pressure effects and Doppler broadening in isolated vibrational-rotational and pure rotational transitions of the water molecule have resulted in the development of a variety of alternative line-profile models. These models capture more of the physics of the influence of pressure on line shapes but, in general, at the price of greater complexity. The Task Group recommends that the partially Correlated quadratic-Speed-Dependent Hard-Collision profile should be adopted as the appropriate model for high-resolution spectroscopy. For simplicity this should b...

Tennyson, Jonathan; Campargue, Alain; Csaszar, Attila G; Daumont, Ludovic; Gamache, Robert R; Hodges, Joseph T; Lisak, Daniel; Naumenko, Olga V; Rothman, Laurence S; Tran, Ha; Zobov, Nikolai F; Buldyreva, Jeanna; Boone, Chris D; De Vizia, Maria Domenica; Gianfrani, Livio; Hartmann, Jean-Michel; McPheat, Robert; Murray, Jonathan; Ngo, Ngoc Hoa; Polyansky, Oleg L; Weidmann, Damien

2014-01-01T23:59:59.000Z

256

High-resolution Bent-crystal Spectrometer for the Ultra-soft X-ray Region  

DOE R&D Accomplishments [OSTI]

A multichannel vacuum Brag-crystal spectrometer has been developed for high-resolution measurements of the line emission from tokamak plasmas in the wavelength region between 4 and 25 angstrom. The spectrometer employs a bent crystal in Johann geometry and a microchannel-plate intensified photodiode array. The instrument is capable of measuring high-resolution spectra (lambda/..delta..lambda approx. 3000) with fast time resolution (4 msec per spectrum) and good spatial resolution (3 cm). The spectral bandwidth is ..delta..lambda/lambda{sub 0} = 8 angstrom. A simple tilt mechanism allows access to different wavelength intervals. In order to illustrate the utility of the new spectrometer, time- and space-resolved measurements of the n = 3 to n = 2 spectrum of selenium from the Princeton Large Torus tokamak plasmas are presented. The data are used to determine the plasma transport parameters and to infer the radial distribution of fluorinelike, neonlike, and sodiumlike ions of selenium in the plasma. The new ultra-soft x-ray spectrometer has thus enabled us to demonstrate the utility of high-resolution L-shell spectroscopy of neonlike ions as a fusion diagnostic.

Beiersdorfer, P.; von Goeler, S.; Bitter, M.; Hill, K. W.; Hulse, R. A.; Walling, R. S.

1988-10-00T23:59:59.000Z

257

Subsurface Geotechnical Parameters Report  

SciTech Connect (OSTI)

The Yucca Mountain Project is entering a the license application (LA) stage in its mission to develop the nation's first underground nuclear waste repository. After a number of years of gathering data related to site characterization, including activities ranging from laboratory and site investigations, to numerical modeling of processes associated with conditions to be encountered in the future repository, the Project is realigning its activities towards the License Application preparation. At the current stage, the major efforts are directed at translating the results of scientific investigations into sets of data needed to support the design, and to fulfill the licensing requirements and the repository design activities. This document addresses the program need to address specific technical questions so that an assessment can be made about the suitability and adequacy of data to license and construct a repository at the Yucca Mountain Site. In July 2002, the U.S. Nuclear Regulatory Commission (NRC) published an Integrated Issue Resolution Status Report (NRC 2002). Included in this report were the Repository Design and Thermal-Mechanical Effects (RDTME) Key Technical Issues (KTI). Geotechnical agreements were formulated to resolve a number of KTI subissues, in particular, RDTME KTIs 3.04, 3.05, 3.07, and 3.19 relate to the physical, thermal and mechanical properties of the host rock (NRC 2002, pp. 2.1.1-28, 2.1.7-10 to 2.1.7-21, A-17, A-18, and A-20). The purpose of the Subsurface Geotechnical Parameters Report is to present an accounting of current geotechnical information that will help resolve KTI subissues and some other project needs. The report analyzes and summarizes available qualified geotechnical data. It evaluates the sufficiency and quality of existing data to support engineering design and performance assessment. In addition, the corroborative data obtained from tests performed by a number of research organizations is presented to reinforce conclusions derived from the pool of data gathered within a full QA-controlled domain. An evaluation of the completeness of the current data is provided with respect to the requirements for geotechnical data to support design and performance assessment.

D. Rigby; M. Mrugala; G. Shideler; T. Davidsavor; J. Leem; D. Buesch; Y. Sun; D. Potyondy; M. Christianson

2003-12-17T23:59:59.000Z

258

Forecasting a large number of tropical cyclone intensities around Japan using a high-resolution atmosphere-ocean coupled model  

Science Journals Connector (OSTI)

This work quantifies the benefits of using a high-resolution atmosphere-ocean coupled model in the tropical cyclone (TC) intensity forecasts in the vicinity of Japan. To do so, a large number of high-resolution calculations were performed by ...

Kosuke Ito; Tohru Kuroda; Kazuo Saito; Akiyoshi Wada

259

Doped GdCl3 high resolution thermometers for use near to the lambda point , A.W. Harter  

E-Print Network [OSTI]

Doped GdCl3 high resolution thermometers for use near to the lambda point R.A.M. Lee a , A.2 K to 2.185 K. A paramagnetic salt thermometer was constructed using this salt and measurements were made of its sensitivity, noise and drift. 1 INTRODUCTION High-resolution thermometers (HRTs) were

Goodstein, David

260

Forensic palmprint recognition, which mainly deals with high-resolution palmprints and latent-to-full palmprint  

E-Print Network [OSTI]

Abstract Forensic palmprint recognition, which mainly deals with high-resolution palmprints of the evidence of palmprints in forensics. There are some in-depth works on high-resolution palmprint comparison algorithm was proposed as it has been proposed for forensic likelihood ratio computation using

Autonoma de Madrid, Universidad

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Evaluation of a low-cost and accurate ocean temperature logger on subsurface mooring systems  

SciTech Connect (OSTI)

Monitoring seawater temperature is important to understanding evolving ocean processes. To monitor internal waves or ocean mixing, a large number of temperature loggers are typically mounted on subsurface mooring systems to obtain high-resolution temperature data at different water depths. In this study, we redesigned and evaluated a compact, low-cost, self-contained, high-resolution and high-accuracy ocean temperature logger, TC-1121. The newly designed TC-1121 loggers are smaller, more robust, and their sampling intervals can be automatically changed by indicated events. They have been widely used in many mooring systems to study internal wave and ocean mixing. The logger’s fundamental design, noise analysis, calibration, drift test, and a long-term sea trial are discussed in this paper.

Tian, Chuan; Deng, Zhiqun; Lu, Jun; Xu, Xiaoyang; Zhao, Wei; Xu, Ming

2014-06-23T23:59:59.000Z

262

Subsurface Fire Hazards Technical Report  

SciTech Connect (OSTI)

The results from this report are preliminary and cannot be used as input into documents supporting procurement, fabrication, or construction. This technical report identifies fire hazards and proposes their mitigation for the subsurface repository fire protection system. The proposed mitigation establishes the minimum level of fire protection to meet NRC regulations, DOE fire protection orders, that ensure fire containment, adequate life safety provisions, and minimize property loss. Equipment requiring automatic fire suppression systems is identified. The subsurface fire hazards that are identified can be adequately mitigated.

Logan, R.C.

1999-09-27T23:59:59.000Z

263

Biomedical Instrumentation and Imaging at TJNAF | U.S. DOE Office...  

Office of Science (SC) Website

for cancer, including breast (scintimammography, positron emission mammography), brain and heart imaging and 2) high resolution, high sensitivity gamma imaging of small...

264

High-resolution spectroscopic probes of collisions and half-collisions  

SciTech Connect (OSTI)

Research in this program explores the dynamics of gas phase collisions and photodissociation by high-resolution laser spectroscopy. Simultaneous state and velocity detection frequently permits a determination of scalar or vector correlations among products. The correlated product distributions are always more informative, and often easier to interpret than the uncorrelated product state distributions. The authors have recently built an apparatus to record transient absorption spectra with 50 nS time resolution and 20 MHz frequency resolution using a single frequency Ti:sapphire laser. The photodissociation of NCCN and C{sub 2}H{sub 5}SCN at 193 nm is discussed.

Hall, G.E. [Brookhaven National Laboratory, Upton, NY (United States)

1993-12-01T23:59:59.000Z

265

High-resolution inverse Raman and resonant-wave-mixing spectroscopy  

SciTech Connect (OSTI)

These research activities consist of high-resolution inverse Raman spectroscopy (IRS) and resonant wave-mixing spectroscopy to support the development of nonlinear-optical techniques for temperature and concentration measurements in combustion research. Objectives of this work include development of spectral models of important molecular species needed to perform coherent anti-Stokes Raman spectroscopy (CARS) measurements and the investigation of new nonlinear-optical processes as potential diagnostic techniques. Some of the techniques being investigated include frequency-degenerate and nearly frequency-degenerate resonant four-wave-mixing (DFWM and NDFWM), and resonant multi-wave mixing (RMWM).

Rahn, L.A. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

266

Determining pipeline fitness for purpose from high resolution smart pig inspections  

SciTech Connect (OSTI)

To gain a financial benefit, a smart operator views inspection as part of an overall strategy to maintain a safe pipeline. This paper shows how periodic internal inspections, followed by defect assessments using fitness-for-purpose criteria and selective repair, is the most cost beneficial way of maintaining the safety of a pipeline. It is highlighted that it is important to use (1) genuine high resolution pigs for the inspection and (2) expert fitness-for-purpose assessment. The cost savings on the optimized future safe operating strategies for the pipeline offset the costs of the inspection and expert assessment. 48 refs., 8 figs., 2 tabs.

Grimes, K. [British Gas plc, Houston, TX (United States); Jones, D.G. [British Gas plc, Cramlington (United Kingdom). Pipeline Integrity International

1996-08-01T23:59:59.000Z

267

SUBSURFACE VISUAL ALARM SYSTEM ANALYSIS  

SciTech Connect (OSTI)

The ''Subsurface Fire Hazard Analysis'' (CRWMS M&O 1998, page 61), and the document, ''Title III Evaluation Report for the Surface and Subsurface Communication System'', (CRWMS M&O 1999a, pages 21 and 23), both indicate the installed communication system is adequate to support Exploratory Studies Facility (ESF) activities with the exception of the mine phone system for emergency notification purposes. They recommend the installation of a visual alarm system to supplement the page/party phone system The purpose of this analysis is to identify data communication highway design approaches, and provide justification for the selected or recommended alternatives for the data communication of the subsurface visual alarm system. This analysis is being prepared to document a basis for the design selection of the data communication method. This analysis will briefly describe existing data or voice communication or monitoring systems within the ESF, and look at how these may be revised or adapted to support the needed data highway of the subsurface visual alarm. system. The existing PLC communication system installed in subsurface is providing data communication for alcove No.5 ventilation fans, south portal ventilation fans, bulkhead doors and generator monitoring system. It is given that the data communication of the subsurface visual alarm system will be a digital based system. It is also given that it is most feasible to take advantage of existing systems and equipment and not consider an entirely new data communication system design and installation. The scope and primary objectives of this analysis are to: (1) Briefly review and describe existing available data communication highways or systems within the ESF. (2) Examine technical characteristics of an existing system to disqualify a design alternative is paramount in minimizing the number of and depth of a system review. (3) Apply general engineering design practices or criteria such as relative cost, and degree of difficulty and complexity in determining requirements in adapting existing data communication highways to support the subsurface visual alarm system. These requirements would include such things as added or new communication cables, added Programmable Logic Controller (PLC), Inputs and Outputs (I/O), and communication hardware components, and human machine interfaces and their software operating system. (4) Select the best data communication highway system based on this review of adapting or integrating with existing data communication systems.

D.W. Markman

2001-08-06T23:59:59.000Z

268

High Resolution Snapshots for the Complete Reaction Cycle of a Cocaine  

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

High Resolution Snapshots for the High Resolution Snapshots for the Complete Reaction Cycle of a Cocaine Catalytic Antibody Xueyong Zhu1, Tobin J. Dickerson2,3, Claude J. Rogers2,3, Gunnar F. Kaufmann2,3, Jenny M. Mee2,3, Kathleen M. McKenzie2,3, Kim D. Janda2,3,4,* and Ian A. Wilson1,4,* Departments of Molecular Biology1 and Chemistry2 and Immunology3, and The Skaggs Institute for Chemical Biology4, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. Cocaine is a powerful addictive stimulant that affects the brain, and abuse of cocaine has been a substantial social problem. Unfortunately, no FDA-approved treatments exist for cocaine abuse, addiction, and overdose. Development of effective treatment for cocaine abuse has been frustrated by the complex neurochemistry in inhibiting a blocking agent. Nevertheless, within the past decade, immunotherapy for cocaine abuse has been evaluated in pre-clinical and human clinical trials.

269

Baseline correction of high resolution spectral profile data based on exponential smoothing  

Science Journals Connector (OSTI)

Abstract Extraction of qualitative and quantitative information from large amounts of analytical signals is difficult with drifted baselines, especially in multivariate analysis. Baseline drift obscures, “fuzzy” signals, and even deteriorates analytical results. In order to obtain accurate and clear results, some effective methods should be proposed and implemented to perform baseline correction before further data analysis. However, most of the classic methods require user's intervention or are prone to variability, especially with low signal-to-noise signals in large data. In this study, a novel baseline correction algorithm based on two-side exponential smoothing algorithm and iterative fitting strategy is proposed. In addition, the iteratively smoothing strategies were creatively implemented in progressively smoothing the residuals between fitted baseline and original signals. This method, named Automatic Two-side Exponential Baseline correction algorithm (ATEB), does hardly require user intervention and prior information, such as peak detection. It's worth noting that the innovative ATEB algorithm has some obvious advantages, especially, when it comes to the processing speed and corrected accuracy of high resolution spectral data with large scale dataset. After a series of benchmarks with high resolution spectral datasets and comparisons with several other popular methods, using various kinds of analytical signals (including hepatocellular carcinoma, MALDI-TOF mass spectrometry, coronary heart disease serum, NMR spectrum and GC–TOF-MS data), the proposed method is found to be accurate, fast, flexible and easy to use on real datasets.

Xinbo Liu; Zhimin Zhang; Yizeng Liang; Pedro F.M. Sousa; Yonghuan Yun; Ling Yu

2014-01-01T23:59:59.000Z

270

Characterizing probability density distributions for household electricity load profiles from high-resolution electricity use data  

Science Journals Connector (OSTI)

Abstract This paper presents a high-resolution bottom-up model of electricity use in an average household based on fit to probability distributions of a comprehensive high-resolution household electricity use data set for detached houses in Sweden. The distributions used in this paper are the Weibull distribution and the Log-Normal distribution. These fitted distributions are analyzed in terms of relative variation estimates of electricity use and standard deviation. It is concluded that the distributions have a reasonable overall goodness of fit both in terms of electricity use and standard deviation. A Kolmogorov–Smirnov test of goodness of fit is also provided. In addition to this, the model is extended to multiple households via convolution of individual electricity use profiles. With the use of the central limit theorem this is analytically extended to the general case of a large number of households. Finally a brief comparison with other models of probability distributions is made along with a discussion regarding the model and its applicability.

Joakim Munkhammar; Jesper Rydén; Joakim Widén

2014-01-01T23:59:59.000Z

271

High resolution neutron crystallographic studies of the hydration of coenzyme cob(II)alamin  

SciTech Connect (OSTI)

The hydration of coenzyme cob(II)alamin has been studied using high resolution monochromatic neutron crystallographic data collected at room temperature to a resolution of surrounded by flexible side chains with terminal functional groups may be significant for 0.92 on the original diffractometer D19 with a prototype 4o x 64o detector at the high-flux reactor neutron source run by the Institute Laue Langevin. The resulting structure provides H bonding parameters for the hydration of biomacromolecules to unprecedented accuracy. These experimental parameters will be used to define more accurate force-fields for biomacromolecular structure refinement. The presence of a hydrophobic bowl motif efficient scavenging of ligands. The feasibility of extending the resolution of this structure to ultra high resolution was investigated by collecting time-of-flight neutron crystallographic data on diffractometer TOPAZ with a prototype array of 14 modular 21o x 21o detectors at the Spallation Neutron Source run by Oak Ridge National Laboratory.

Jogl, Gerwald [Brown University; Wang, Xiaoping [ORNL; Mason, Sax [Institut Laue-Langevin (ILL); Kovalevsky, Andrey [Los Alamos National Laboratory (LANL); Mustyakimov, Marat [Los Alamos National Laboratory (LANL); Fisher, Zoe [Los Alamos National Laboratory (LANL); Hoffmann, Christina [ORNL; Kratky, Christoph [Institute of Biosciences, University of Graz; Langan, Paul [ORNL

2011-01-01T23:59:59.000Z

272

High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy  

SciTech Connect (OSTI)

The application of high-resolution X-ray spectroscopy methods to study the photosynthetic water oxidizing complex, which contains a unique hetero-nuclear catalytic Mn4Ca cluster, are described. Issues of X-ray damage especially at the metal sites in the Mn4Ca cluster are discussed. The structure of the Mn4Ca catalyst at high-resolution which has so far eluded attempts of determination by X-ray diffraction, EXAFS and other spectroscopic techniques has been addressed using polarized EXAFS techniques applied to oriented PS II membrane preparations and PS II single crystals. A review of how the resolution of traditional EXAFS techniques can be improved, using methods such as range-extended EXAFS is presented, and the changes that occur in the structure of the cluster as it advances through the catalytic cycle are described. X-ray absorption and emission techniques (XANES and K? emission) have been used earlier to determine the oxidation states of the Mn4Ca cluster, and in this report we review the use of X-ray resonant Raman spectroscopy to understand the electronic structure of the Mn4Ca cluster as it cycles through the intermediate S-states.

Yachandra, Vittal; Yano, Junko; Kern, Jan; Pushkar, Yulia; Sauer, Kenneth; Glatzel, Pieter; Bergmann, Uwe; Messinger, Johannes; Zouni, Athina; Yachandra, Vittal K.

2007-08-01T23:59:59.000Z

273

High-resolution stratospheric tracer fields estimated from satellite observations using Lagrangian trajectory calculations  

SciTech Connect (OSTI)

A technique is introduced by which high-resolution tracer fields may be constructed from low-resolution satellite observations. The technique relies upon the continual cascade of tracer variance from large to small scales and makes use of wind fields generated by a data assimilation scheme. To demonstrate its usefulness, the technique has been applied in a study of isentropic distributions of nitrous oxide in the winter midstratosphere, using measurements made by the Improved Stratospheric and Mesospheric Sounder (ISAMS) instrument on the Upper Atmosphere Research Satellite (UARS). The results show that the high-resolution fields significantly increase the amount of information that is available from the satellite observations. The fields give insights into the characteristic structure and evolution of tracer distributions at scales that are normally obscured from view. Two results are particularly noteworthy. First, at the interface between low and middle latitudes there is evidence of active mixing. This mixing occurs on the eastern, equatorward side of air that is being drawn toward high latitudes around the polar vortex. Second, in the anticyclone, a complex pattern of transport is revealed. Air drawn in from low latitudes spirals together with ambient midlatitude air. Small scales are generated relatively slowly in the organized flow, and persistent filamentary structures, with transverse scales of hundreds of kilometers or greater, are seen.

Sutton, R.T.; Maclean, H.; Swinbank, R.; O`Neill, A.; Taylor, F.W. [Oxford Univ., Oxford (United Kingdom)] [Oxford Univ., Oxford (United Kingdom); [Meteorological Office, Bracknell, Berkshire (United Kingdom); [Univ. of Reading, Reading (United Kingdom)

1994-10-01T23:59:59.000Z

274

CeBr3 as a High-Resolution Gamma-Ray Detector  

SciTech Connect (OSTI)

Lanthanum halide (LaBr3:Ce) scintillators have been well-documented as high-resolution gamma-ray detectors that are operated at room temperature. These scintillators have better resolution (<3% at 662 keV) relative to sodium iodide (NaI(Tl)) scintillators (7% at 662 keV), but the naturally occurring radioactive isotope 138La causes self-activity in the crystal that occludes portions of the gamma-ray spectrum. This selfactivity limits the use of LaBr3:Ce in high-sensitivity applications. Cerium, the dopant in the LaBr3:Ce matrix possesses useful scintillation properties, and its selfactivity is on the order of 3750 times less than La; however, Ce has not been fully characterized as the chief component in a scintillation detector. This work investigated Ce as the key scintillation matrix component in a scintillation detector with the hypothesis that CeBr3 promises energy resolution comparable or superior to LaBr3:Ce. The researchers involved with this work believe that CeBr3 may be the answer to obtaining high-temperature, high-resolution spectra with greater sensitivity than LaBr3:Ce.

Michael Reed, Paul Guss, Christopher Contreras

2008-11-13T23:59:59.000Z

275

High-Resolution Infrared and Electron-Diffraction Studies of Trimethylenecyclopropane ([3]-Radialene)  

SciTech Connect (OSTI)

Combined high-resolution spectroscopic, electron-diffraction, and quantum theoretical methods are particularly advantageous for small molecules of high symmetry and can yield accurate structures that reveal subtle effects of electron delocalization on molecular bonds. The smallest of the radialene compounds, trimethylenecyclopropane, [3]-radialene, has been synthesized and examined in the gas phase by these methods. The first high-resolution infrared spectra have been obtained for this molecule of D3h symmetry, leading to an accurate B0 rotational constant value of 0.1378629(8) cm-1, within 0.5% of the value obtained from electronic structure calculations (density functional theory (DFT) B3LYP/cc-pVTZ). This result is employed in an analysis of electron-diffraction data to obtain the rz bond lengths (in Å): C-H = 1.072 (17), C-C = 1.437 (4), and C=C = 1.330 (4). The analysis does not lead to an accurate value of the HCH angle; however, from comparisons of theoretical and experimental angles for similar compounds, the theoretical prediction of 117.5? is believed to be reliable to within 2?. The effect of electron delocalization in radialene is to reduce the single C-C bond length by 0.07 Å compared to that in cyclopropane.

Wright, Corey R.; Holmes, Joshua; Nibler, Joseph W.; Hedberg, Kenneth; White, James D.; Hedberg, Lise; Weber, Alfons; Blake, Thomas A.

2013-05-16T23:59:59.000Z

276

High Resolution Transmission Spectroscopy as a Diagnostic for Jovian Exoplanet Atmospheres: Constraints from Theoretical Models  

E-Print Network [OSTI]

We present high resolution transmission spectra of giant planet atmospheres from a coupled 3-D atmospheric dynamics and transmission spectrum model that includes Doppler shifts which arise from winds and planetary motion. We model jovian planets covering more than two orders of magnitude in incident flux, corresponding to planets with 0.9 to 55 day orbital periods around solar-type stars. The results of our 3-D dynamical models reveal certain aspects of high resolution transmission spectra that are not present in simple 1-D models. We find that the hottest planets experience strong substellar to anti-stellar (SSAS) winds, resulting in transmission spectra with net blue shifts of up to 3 km s$^{-1}$, whereas less irradiated planets show almost no net Doppler shifts. Compared to 1-D models, peak line strengths are significantly reduced for the hottest atmospheres owing to Doppler broadening from a combination of rotation (which is faster for close-in planets under the assumption of tidal locking) and atmospheri...

Kempton, Eliza M -R; Heng, Kevin

2014-01-01T23:59:59.000Z

277

Generating and Calibrating Probabilistic Quantitative Precipitation Forecasts from the High-Resolution NWP Model COSMO-DE  

Science Journals Connector (OSTI)

Statistical postprocessing is an integral part of an ensemble prediction system. This study compares methods used to derive probabilistic quantitative precipitation forecasts based on the high-resolution version of the German-focused Consortium ...

Sabrina Bentzien; Petra Friederichs

2012-08-01T23:59:59.000Z

278

High Resolution Quantitative Auto-Radiography to determine microscopic distributions of B-10 in neutron capture therapy  

E-Print Network [OSTI]

The success of Boron Neutron Capture Therapy (BNCT) is heavily dependent on the microscopic distribution of B-10 in tissue. High Resolution Quantitative Auto-Radiography (HRQAR) is a potentially valuable analytical tool ...

Harris, Thomas C. (Thomas Cameron)

2006-01-01T23:59:59.000Z

279

Periodicity faults in chain silicates: A new type of planar lattice fault observed with high resolution electron microscopy  

Science Journals Connector (OSTI)

The existence of errors in the periodicity of the tetrahedral chains in pyroxenes and pyroxenoids is predicted. With high resolution electron microscopy of rhodonite, (Mn, Ca)5[Si5O15], and pyroxmangite, (Mn,Fe,C...

M. Czank; F. Liebau

1980-07-01T23:59:59.000Z

280

Speed-of-light effects in high-resolution long-cavity fiber Fabry–Perot scanning interferometers  

Science Journals Connector (OSTI)

High-resolution fiber Fabry–Perot scanning interferometers demonstrate bandwidths from 20 MHz to 4 kHz with corresponding cavity lengths from 26 mm to 500 m. Finite speed-of-light...

Hsu, Kevin; Miller, Calvin M; Miller, Jeff W

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

First high-resolution analysis of the 41+3 band of nitrogen dioxide near 1.5 m  

E-Print Network [OSTI]

1 1 First high-resolution analysis of the 41+3 band of nitrogen dioxide near 1.5 µm Agnès Perrin a. Keywords: 14 N16 O2; Nitrogen dioxide; High-resolution infrared spectrum; Electron spin- rotation resonance, CRDS hal-00563141,version1-4Feb2011 #12;3 3 1. Introduction Nitrogen dioxide (14 N16 O2

Boyer, Edmond

282

EMSL: Science: Terrestrial & Subsurface Ecosystems  

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

Terrestrial & Subsurface Ecosystems Terrestrial & Subsurface Ecosystems Terrestrial and Subsurface Ecosystems logo Visualization of CFD-simulated fluid velocities within a single pore space between randomly packed spherical grains Visualization of CFD-simulated fluid velocities within a single pore space between randomly packed spherical grains. The Terrestrial and Subsurface Ecosystems Science Theme focuses on the dynamics of nutrients, metabolites, and contaminants at biogeochemical interfaces in heterogeneous environments across multiple scales. By providing a mechanistic understanding of biogeochemical and microbial processes in soils and the subsurface, and linking those processes via pore-scale hydrological models, EMSL can improve strategies for sustainable solutions to contaminant attenuation, remediation and biogeochemical

283

Subsurface Knowledge Reference Page | Department of Energy  

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

Subsurface Knowledge Reference Page Subsurface Knowledge Reference Page Subsurface Knowledge Reference Page The below listing provides additional references related to Subsurface & Groundwater Remediation. The references are categorized by documents types (e.g., Strategic Plans, Groundwater Plume Map Booklets, etc.) and under each "document type", there is a list of documents and/or hyperlinks to a reference. The Subsurface Knowledge Reference Page will continue to reflect additional information as it is identified. Strategic Plans Scientific Opportunities to Reduce Risk in Groundwater and Soil Remediation Scientific Opportunities for Monitoring at Environmental Remediation Sites (SOMERS) Groundwater Plume Map Booklets Groundwater Contamination and Treatment at Department of Energy Sites -

284

Method of installing subsurface barrier  

DOE Patents [OSTI]

Systems, components, and methods relating to subterranean containment barriers. Laterally adjacent tubular casings having male interlock structures and multiple female interlock structures defining recesses for receiving a male interlock structure are used to create subterranean barriers for containing and treating buried waste and its effluents. The multiple female interlock structures enable the barriers to be varied around subsurface objects and to form barrier sidewalls. The barrier may be used for treating and monitoring a zone of interest.

Nickelson, Reva A. (Shelley, ID); Richardson, John G. (Idaho Falls, ID); Kostelnik, Kevin M. (Idaho Falls, ID); Sloan, Paul A. (Rigby, ID)

2007-10-09T23:59:59.000Z

285

CESM Century-Scale Climate Experiments with a High-Resolution Atmosphere |  

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

A portion of the 1/4 degree grid global grid is shown over the southeast part of the United States. A portion of the 1/4 degree grid global grid is shown over the southeast part of the United States. The Community Earth System Model (CESM) is joint effort between the Department of Energy and National Science Foundation. It couples state-of-art atmosphere, ocean, sea ice, land/vegetation/ ecological/ and major glaciers into a unified system or components can be run independently. (see https://www2.ucar.edu/for-staff/update/community-earth-system-model) CESM Century-Scale Climate Experiments with a High-Resolution Atmosphere PI Name: Warren Washington PI Email: wmw@ucar.edu Institution: University Corporation for Atmospheric Research (UCAR) Allocation Program: INCITE Allocation Hours at ALCF: 102.8 Million Year: 2014 Research Domain: Earth Science Researchers at the University Corporation for Atmospheric Research (UCAR)

286

Atmospheric Methane at Cape Meares, Oregon, U.S.A.: A High-Resolution Data  

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

Atmospheric Trace Gases » Methane » Atmospheric Trace Gases » Methane » Atmospheric Methane, Cape Meares Atmospheric Methane at Cape Meares, Oregon, U.S.A.: A High-Resolution Data Base for the Period 1979-1992 DOI: 10.3334/CDIAC/atg.db1007 data Data (DB1007) Investigators M. A. K. Khalil and R. A. Rasmussen Description This data base presents continuous automated atmospheric methane (CH4) measurements taken at the atmospheric monitoring facility in Cape Meares, Oregon, by the Oregon Graduate Institute of Science and Technology. The Cape Meares data represent some 119,000 individual atmospheric methane measurements carried out during 1979-1992. Analysis of ambient air (collected 12 to 72 times daily) was carried out by means of an automated sampling and measurement system, using the method of gas chromatography and

287

Air Fluorescence Calorimetry with the High Resolution Fly's Eye and Telescope Array Experiments  

SciTech Connect (OSTI)

The air fluorescence technique was first successfully deployed on the Fly's Eye Experiment (1981-1993) by the University of Utah. Its successor, the High Resolution Fly's Eye (HiRes) experiment has further exploited this technique, first in hybrid mode with the MIA muon array (1993-1996), and then in monocular and stereoscopic modes (1997-2006). Results from HiRes will be presented, including evidence for the Greisen-Zatsepin-K'uzmin (GZK) Effect predicted 40 years ago. Most recently, members of the HiRes are collaborating with groups from Japan, led by University of Tokyo, to construct and operate the Telescope Array (TA) experiment, which will deploy a large scintillation-based ground array in combination with fluorescence detectors. Funding for TA in the US has already been approved by NSF. TA will begin operation in 2007.

Jui, Charles C. H. [Department of Physics, University of Utah Salt Lake City, Utah (United States)

2006-10-27T23:59:59.000Z

288

High-Resolution Spectroscopy of G191-B2B in the Extreme Ultraviolet  

E-Print Network [OSTI]

We report a high-resolution (R=3000-4000) spectroscopic observation of the DA white dwarf G191-B2B in the extreme ultraviolet band 220-245 A. A low- density ionised He component is clearly present along the line-of-sight, which if completely interstellar implies a He ionisation fraction considerably higher than is typical of the local interstellar medium. However, some of this material may be associated with circumstellar gas, which has been detected by analysis of the C IV absorption line doublet in an HST STIS spectrum. A stellar atmosphere model assuming a uniform element distribution yields a best fit to the data which includes a significant abundance of photospheric He. The 99-percent confidence contour for the fit parameters excludes solutions in which photospheric He is absent, but this result needs to be tested using models allowing abundance gradients.

R. G. Cruddace; M. P. Kowalski; D. J. Yentis; C. M. Brown; H. Gursky; M. A. Barstow; N. P. Bannister; G. W. Fraser; J. E. Spragg; J. S. Lapington; J. A. Tandy; B. Sanderson; J. L. Culhane; T. W. Barbee; J. F. Kordas; W. Goldstein; G. G. Fritz

2001-12-11T23:59:59.000Z

289

A High-Resolution Aeromagnetic Survey to Identify Buried Faults at Dixie Valley, Nevada  

SciTech Connect (OSTI)

Preliminary results from a high-resolution aeromagnetic survey (200m line spacing) acquired in Dixie Valley early in 2002 provide confirmation of intra-basin faulting based on subtle surface indications. In addition the data allow identification of the locations and trends of many faults that have not been recognized at the surface, and provide a picture of intrabasin faulting patterns not possible using other techniques. The data reveal a suite of northeasterly-trending curving and branching faults that surround a relatively coherent block in the area of Humboldt Salt Marsh, the deepest part of the basin. The producing reservoir occurs at the north end of this coherent block, where rampart faults from the northwest side of the valley merge with anthithetic faults from the central and southeast parts of the valley.

Smith, Richard Paul; Grauch, V. J. S.; Blackwell, David D.

2002-09-01T23:59:59.000Z

290

High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited)  

SciTech Connect (OSTI)

The areal density ({rho}R) of cryogenic DT implosions on Omega is inferred by measuring the spectrum of neutrons that elastically scatter off the dense deuterium (D) and tritium (T) fuel. Neutron time-of-flight (nTOF) techniques are used to measure the energy spectrum with high resolution. High signal-to-background data has been recorded on cryogenic DT implosions using a well-collimated 13.4-m line of sight and an nTOF detector with an advanced liquid scintillator compound. An innovative method to analyze the elastically scattered neutron spectra was developed using well-known cross sections of the DT nuclear reactions. The estimated areal densities are consistent with alternative {rho}R measurements and 1-D simulations.

Forrest, C. J.; Radha, P. B.; Glebov, V. Yu.; Goncharov, V. N.; Knauer, J. P.; Pruyne, A.; Romanofsky, M.; Sangster, T. C.; Shoup, M. J. III; Stoeckl, C. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (United States); Casey, D. T.; Gatu-Johnson, M. [Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States); Gardner, S. [Constellation Energy Nuclear Group, Ontario, New York 14519 (United States)

2012-10-15T23:59:59.000Z

291

High resolution reverse VSP and interwell seismic experiments at the Buckhorn test site in Illinois  

SciTech Connect (OSTI)

Reverse Vertical Seismic Profiling VSP and interwell seismic experiments were conducted at the Western Kentucky Petroleum Buckhorn test site near Quincy, Illinois. The RVSP data were acquired using a 3-component pneumatic probe and the interwell seismic data were acquired using a 24-element hydrophone array. The experiments were conducted to analyze high resolution seismic waveforms and to perform travel time velocity inversion for mapping the Silurian Kankakee formation which is the more prolific oil producer in the Mt. Sterling area. Reverse VSP and interwell seismic measurements together with log data have yielded information on the anisotropic characteristic of the shale formation and in the compressional wave velocity distribution of the limestone formation. These results inferred that reverse VSP (using several 3-component detectors in shallow boreholes) and interwell seismic measurements integrated with log data and seismic modeling can delineate the hydrocarbon reservoir and geological structures at the Buckhorn test site.

Parra, J.O.; Bangs, J.H.

1992-07-01T23:59:59.000Z

292

High resolution reverse VSP and interwell seismic experiments at the Buckhorn test site in Illinois  

SciTech Connect (OSTI)

Reverse Vertical Seismic Profiling VSP and interwell seismic experiments were conducted at the Western Kentucky Petroleum Buckhorn test site near Quincy, Illinois. The RVSP data were acquired using a 3-component pneumatic probe and the interwell seismic data were acquired using a 24-element hydrophone array. The experiments were conducted to analyze high resolution seismic waveforms and to perform travel time velocity inversion for mapping the Silurian Kankakee formation which is the more prolific oil producer in the Mt. Sterling area. Reverse VSP and interwell seismic measurements together with log data have yielded information on the anisotropic characteristic of the shale formation and in the compressional wave velocity distribution of the limestone formation. These results inferred that reverse VSP (using several 3-component detectors in shallow boreholes) and interwell seismic measurements integrated with log data and seismic modeling can delineate the hydrocarbon reservoir and geological structures at the Buckhorn test site.

Parra, J.O.; Bangs, J.H.

1992-01-01T23:59:59.000Z

293

High-resolution multi-heterodyne spectroscopy based on Fabry-Perot quantum cascade lasers  

SciTech Connect (OSTI)

In this Letter, we present a method of performing broadband mid-infrared spectroscopy with conventional, free-running, continuous wave Fabry-Perot quantum cascade lasers (FP-QCLs). The measurement method is based on multi-heterodyne down-conversion of optical signals. The sample transmission spectrum probed by one multi-mode FP-QCL is down-converted to the radio-frequency domain through an optical multi-heterodyne process using a second FP-QCL as the local oscillator. Both a broadband multi-mode spectral measurement as well as high-resolution (?15?MHz) spectroscopy of molecular absorption are demonstrated and show great potential for development of high performance FP-laser-based spectrometers for chemical sensing.

Wang, Yin; Wang, Wen; Wysocki, Gerard, E-mail: gwysocki@princeton.edu [Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08540 (United States); Soskind, Michael G. [Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08540 (United States); Department of Electrical Engineering, Rutgers University, New Brunswick, New Jersy 08901 (United States)

2014-01-20T23:59:59.000Z

294

High resolution laser induced fluorescence Doppler velocimetry utilizing saturated absorption spectroscopy  

SciTech Connect (OSTI)

A high resolution laser induced fluorescence (LIF) system has been developed to measure the flow velocity field of neutral particles in an electron-cyclotron-resonance argon plasma. The flow velocity has been determined by the Doppler shift of the LIF spectrum, which is proportional to the velocity distribution function. Very high accuracy in velocity determination has been achieved by installing a saturated absorption spectroscopy unit into the LIF system, where the absolute value and scale of laser wavelength are determined by using the Lamb dip and the fringes of a Fabry-Perot interferometer. The minimum detectable flow velocity of a newly developed LIF system is {+-}2 m/s, and this performance remains unchanged in a long-time experiment. From the radial measurements of LIF spectra of argon metastable atoms, it is found that there exists an inward flow of neutral particles associated with neutral depletion.

Aramaki, Mitsutoshi [Department of Electrical Engineering and Computer Science, Nagoya University, Nagoya 464-8603 (Japan); Ogiwara, Kohei; Etoh, Shuzo [Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580 (Japan); Yoshimura, Shinji [National Institute for Fusion Science, Toki 509-5292 (Japan); Tanaka, Masayoshi Y. [Department of Advanced Energy Engineering Science, Kyushu University, Kasuga 816-8580 (Japan)

2009-05-15T23:59:59.000Z

295

High-Resolution Solid-State Nuclear Magnetic Resonance Experiments on Highly Radioactive Ceramics  

SciTech Connect (OSTI)

A triple containment magic-angle spinning rotor insert system has been developed and a sample handling procedure formulated for safety analyzing highly radioactive solids by high resolution solid state NMR. The protocol and containment system have been demonstrated for magic angle spinning (MAS) experiments on ceramic samples containing 5-10 wt% 239Pu and 238Pu at rotation speeds of 3500 Hz. The technique has been used to demonstrate that MASNMR experiments can be used to measure amorphous atomic number fractions produced during accelerated internal radioactive decay. This will allow incorporated ?-emitters with short half-lives to be used to model the long-term radiation tolerance of potential ceramic radioactive waste forms. It is believed to be the first example of MASNMR spectroscopy on samples containing fissionable isotopes.

Farnan, Ian E.; Cho, Herman M.; Weber, William J.; Scheele, Randall D.; Johnson, Nigel R.; Kozelisky, Anne E.

2004-12-01T23:59:59.000Z

296

Application of high?resolution interferometry to plasma density measurements on TEXT?Upgrade  

Science Journals Connector (OSTI)

High?resolution interferometry using far?infrared laser radiation is employed on TEXT?Upgrade to measure the spatial and temporal evolution of the electron density profile as well as small?scale perturbations. Perturbations to the electron density induced by naturally occurring sawtooth oscillations or externally imposed gas modulations can be used to ascertain the local particle flux and transport coefficients in the plasma interior. Density islands associated with Mirnov activity can also be resolved providing detailed information on the density profile at island X and O points. Implementation of a second orthogonal view will allow accurate determination of the density profile in the various asymmetric plasma configurations of TEXT?Upgrade.

D. L. Brower; Y. Jiang; W. A. Peebles; S. Burns; N. C. Luhmann Jr.

1992-01-01T23:59:59.000Z

297

Multi-Group Transport Methods for High-Resolution Neutron Activation Analysis  

SciTech Connect (OSTI)

The accurate and efficient simulation of coupled neutron-photon problems is necessary for several important radiation detection applications. Examples include the detection of nuclear threats concealed in cargo containers and prompt gamma neutron activation analysis for nondestructive determination of elemental composition of unknown samples. In these applications, high-resolution gamma-ray spectrometers are used to measure the spectrum of the emitted photon flux, which consists of both continuum and characteristic gamma rays with discrete energies. Monte Carlo transport is the most commonly used simulation tool for this type of problem, but computational times for many problems can be prohibitively long. This work explores the use of multi-group deterministic methods for the simulation of coupled neutron-photon problems.

Burns, Kimberly A.; Smith, Leon E.; Gesh, Christopher J.; Shaver, Mark W.

2009-09-24T23:59:59.000Z

298

High resolution structure of the large ribosomal subunit from a Mesophilic Eubacterium  

SciTech Connect (OSTI)

We describe the high resolution structure of the large ribosomal subunit from Deinococcus radiodurans (D50S), a gram-positive mesophile suitable for binding of antibiotics and functionally relevant ligands. The over-all structure of D50S is similar to that from the archae bacterium Haloarcula marismortui (H50S); however, a detailed comparison revealed significant differences, for example, in the orientation of nucleotides in peptidyl transferase center and in the structures of many ribosomal proteins. Analysis of ribosomal features involved in dynamic aspects of protein biosynthesis that are partially or fully disordered in H50S revealed the conformations of intersubunit bridges in unbound subunits, suggesting how they may change upon subunit association and how movements of the L1-stalk may facilitate the exit of tRNA.

Harms, Joerg; Schluenzen, Frank; Zarivach, Raz; Bashan, Anat; Gat, Sharon; Agmon, Ilana; Bartels, Heike; Franceschi, Francois; Yonath, Ada (Weizmann Inst Israel); (Mac Planck Germany); (Max Planck Germany)

2009-10-07T23:59:59.000Z

299

High resolution optical spectroscopy of IRAS 09425-6040 (=GLMP 260)  

E-Print Network [OSTI]

We present high resolution optical spectroscopic observations of IRAS 09425-6040, a peculiar, extremely red, C-rich AGB star showing prominent O-rich dust features in its ISO infrared spectrum attributed to crystalline silicates. Our analysis shows that IRAS 09425-6040 is indeed a C-rich star slightly enriched in lithium (log (Li/H) + 12 ~ 0.7) with a low 12C/13C = 15+-6 ratio. We also found some evidence that it may be enriched in s-elements. Combining our results with other observational data taken from the literature we conclude that the star is possibly an intermediate-mass TP-AGB star (M > 3 M_sun) close to the end of its AGB evolution which may have only very recently experienced a radical change in its chemistry, turning into a carbon-rich AGB star.

García-Hernandez, D A; Manchado, A; García-Lario, P

2006-01-01T23:59:59.000Z

300

High resolution optical spectroscopy of IRAS 09425-6040 (=GLMP 260)  

E-Print Network [OSTI]

We present high resolution optical spectroscopic observations of IRAS 09425-6040, a peculiar, extremely red, C-rich AGB star showing prominent O-rich dust features in its ISO infrared spectrum attributed to crystalline silicates. Our analysis shows that IRAS 09425-6040 is indeed a C-rich star slightly enriched in lithium (log (Li/H) + 12 ~ 0.7) with a low 12C/13C = 15+-6 ratio. We also found some evidence that it may be enriched in s-elements. Combining our results with other observational data taken from the literature we conclude that the star is possibly an intermediate-mass TP-AGB star (M > 3 M_sun) close to the end of its AGB evolution which may have only very recently experienced a radical change in its chemistry, turning into a carbon-rich AGB star.

D. A. Garcia-Hernandez; C. Abia; A. Manchado; P. Garcia-Lario

2006-03-10T23:59:59.000Z

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301

High-Resolution Aeromagnetic Survey Map of Part of the Southwest Nevada Volcanic Field  

SciTech Connect (OSTI)

A high-resolution aeromagnetic survey was recently flown to collect data for geologic investigations in the Southwest Nevada Volcanic Field. This survey represents a marked improvement over previous (1999) surveys. The survey includes over 860 km{sup 2} covered by nearly 16,000 km of flightline with 60-m spacing and an instrument altitude of 30 m above the ground surface. Features of interest visible in the dataset include magnetic banding in the volcanic tuffs that form the faulted terrain and sharp delineation of Quaternary basalt cinder cones and lava flows. This 1:100,000-scale map includes a shaded-relief map base and a semi-transparent overlay of the aeromagnetic data, with inset maps illustrating (1) comparisons of detail between the 1999 and 2004 datasets, (2) polarity reversal banding in the volcanic tuff ridges, (3) details of the morphology of Quaternary basalt centers enhanced by aeromagnetic data, and (4) use of GIS in planning the survey.

G. Keating; R. Prueitt; A. Cogbill

2004-06-21T23:59:59.000Z

302

Ultra-high-resolution alpha spectrometry for nuclear forensics and safeguards applications  

SciTech Connect (OSTI)

We will present our work on the development of ultra-high-resolution detectors for alpha particle spectrometry. These detectors, based on superconducting transition-edge sensors, offer energy resolution that is five to ten times better than conventional silicon detectors. Using these microcalorimeter detectors, the isotopic composition of mixed-actinide samples can be determined rapidly without the need for actinide separation chemistry to isolate each element, or mass spectrometry to separate isotopic signatures that can not be resolved using traditional alpha spectrometry (e.g. Pu-239/Pu-240, or Pu-238/Am-241). This paper will cover the detector and measurement system, actinide source preparation, and the quantitative isotopic analysis of a number of forensics- and safeguards-relevant radioactive sources.

Bacrania, Minesh K [Los Alamos National Laboratory; Croce, Mark [Los Alamos National Laboratory; Bond, Evelyn [Los Alamos National Laboratory; Dry, Donald [Los Alamos National Laboratory; Moody, W. Allen [Los Alamos National Laboratory; Lamont, Stephen [Los Alamos National Laboratory; Rabin, Michael [Los Alamos National Laboratory; Rim, Jung [Los Alamos National Laboratory; Smith, Audrey [Los Alamos National Laboratory; Beall, James [NIST-BOULDER; Bennett, Douglas [NIST-BOULDER; Kotsubo, Vincent [NIST-BOULDER; Horansky, Robert [NIST-BOULDER; Hilton, Gene [NIST-BOULDER; Schmidt, Daniel [NIST-BOULDER; Ullom, Joel [NIST-BOULDER; Cantor, Robin [STAR CRYOELECTRONICS

2010-01-01T23:59:59.000Z

303

NREL GIS Data: South Carolina High Resolution Wind Resource | OpenEI  

Open Energy Info (EERE)

646 646 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142278646 Varnish cache server NREL GIS Data: South Carolina High Resolution Wind Resource Dataset Summary Description Abstract: Annual average wind resource potential for the state of South Carolina at a 50 meter height. Purpose: Provide information on the wind resource development potential within the state of South Carolina. Supplemental_Information: This data set has been validated by NREL and wind energy meteorological consultants. However, the data is not suitable for micro-siting potential development projects. This shapefile was generated from a raster dataset with a 200 m resolution, in a WGS 84 projection system.

304

High resolution x-ray fluorescence spectroscopy - a new technique for site- and spin-selectivity  

SciTech Connect (OSTI)

X-ray spectroscopy has long been used to elucidate electronic and structural information of molecules. One of the weaknesses of x-ray absorption is its sensitivity to all of the atoms of a particular element in a sample. Through out this thesis, a new technique for enhancing the site- and spin-selectivity of the x-ray absorption has been developed. By high resolution fluorescence detection, the chemical sensitivity of K emission spectra can be used to identify oxidation and spin states; it can also be used to facilitate site-selective X-ray Absorption Near Edge Structure (XANES) and site-selective Extended X-ray Absorption Fine Structure (EXAFS). The spin polarization in K fluorescence could be used to generate spin selective XANES or spin-polarized EXAFS, which provides a new measure of the spin density, or the nature of magnetic neighboring atoms. Finally, dramatic line-sharpening effects by the combination of absorption and emission processes allow observation of structure that is normally unobservable. All these unique characters can enormously simplify a complex x-ray spectrum. Applications of this novel technique have generated information from various transition-metal model compounds to metalloproteins. The absorption and emission spectra by high resolution fluorescence detection are interdependent. The ligand field multiplet model has been used for the analysis of K{alpha} and K{beta} emission spectra. First demonstration on different chemical states of Fe compounds has shown the applicability of site selectivity and spin polarization. Different interatomic distances of the same element in different chemical forms have been detected using site-selective EXAFS.

Wang, Xin [Univ. of California, Davis, CA (United States). Dept. of Applied Science]|[Lawrence Berkeley National Lab., CA (United States)

1996-12-01T23:59:59.000Z

305

High resolution simulations of ignition capsule designs for the National Ignition Facility  

SciTech Connect (OSTI)

Ignition capsule designs for the National Ignition Facility (NIF) [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 443, 2841 (2004)] have continued to evolve in light of improved physical data inputs, improving simulation techniques, and - most recently - experimental data from a growing number of NIF sub-ignition experiments. This paper summarizes a number of recent changes to the cryogenic capsule design and some of our latest techniques in simulating its performance. Specifically, recent experimental results indicated harder x-ray drive spectra in NIF hohlraums than were predicted and used in previous capsule optimization studies. To accommodate this harder drive spectrum, a series of high-resolution 2-D simulations, resolving Legendre mode numbers as high as two thousand, were run and the germanium dopant concentration and ablator shell thicknesses re-optimized accordingly. Simultaneously, the possibility of cooperative or nonlinear interaction between neighboring ablator surface defects has motivated a series of fully 3-D simulations run with the massively parallel HYDRA code. These last simulations include perturbations seeded on all capsule interfaces and can use actual measured shell surfaces as initial conditions. 3-D simulations resolving Legendre modes up to two hundred on large capsule sectors have run through ignition and burn, and higher resolution simulations resolving as high as mode twelve hundred have been run to benchmark high-resolution 2-D runs. Finally, highly resolved 3-D simulations have also been run of the jet-type perturbation caused by the fill tube fitted to the capsule. These 3-D simulations compare well with the more typical 2-D simulations used in assessing the fill tube's impact on ignition. Coupled with the latest experimental inputs from NIF, our improving simulation capability yields a fuller and more accurate picture of NIF ignition capsule performance.

Clark, D S; Haan, S W; Cook, A W; Edwards, M J; Hammel, B A; Koning, J M; Marinak, M M

2011-02-17T23:59:59.000Z

306

Recent progress of avalanche photodiodes in high-resolution X-rays and Gamma-rays detection  

E-Print Network [OSTI]

We have studied the performance of large area avalanche photodiodes (APDs) recently developed by Hamamatsu Photonics K.K, in high-resolution X-rays and Gamma-rays detections. We show that reach-through APD can be an excellent soft X-ray detector operating at room temperature or moderately cooled environment. We obtain the best energy resolution ever achieved with APDs, 6.4 % for 5.9 keV X-rays, and obtain the energy threshold as low as 0.5 keV measured at -20deg. Thanks to its fast timing response, signal carriers in the APD device are collected within a short time interval of 1.9 nsec (FWHM). This type of APDs can therefore be used as a low-energy, high-counting particle monitor onboard the forthcoming Pico-satellite Cute1.7. As a scintillation photon detector, reverse-type APDs have a good advantage of reducing the dark noise significantly. The best FWHM energy resolutions of 9.4+-0.3 % and 4.9+-0.2 % were obtained for 59.5 keV and 662 keV Gamma-rays, respectively, as measured with a CsI(Tl) crystal. Combination of APDs with various other scintillators (BGO, GSO, and YAP) also showed better results than that obtained with a photomultiplier tube (PMT). These results suggest that APD could be a promising device for replacing traditional PMT usage in some applications. In particular 2-dim APD array, which we present in this paper, will be a promising device for a wide-band X-ray and Gamma-ray imaging detector in future space research and nuclear medicine.

J. Kataoka; T. Saito; Y. Kuramoto; T. Ikagawa; Y. Yatsu; J. Kotoku; M. Arimoto; N. Kawai; Y. Ishikawa; N. Kawabata

2006-02-17T23:59:59.000Z

307

Fusion of urban remote image based on multi-characteristics  

Science Journals Connector (OSTI)

A fusion approach is proposed to refine the resolution of urban multi-spectral images using the corresponding high-resolution panchromatic (PAN) images. Firstly, the two images are...

Yang, Xuhong; Jing, Zhongliang; Liu, Gang

2006-01-01T23:59:59.000Z

308

MAINTAINING HIGH RESOLUTION MASS SPECTROMETRY CAPABILITIES FOR NATIONAL NUCLEAR SECURITY ADMINISTRATION APPLICATIONS  

SciTech Connect (OSTI)

The Department of Energy (DOE) National Nuclear Security Administration (NNSA) has a specialized need for analyzing low mass gas species at very high resolutions. The currently preferred analytical method is electromagnetic sector mass spectrometry. This method allows the NNSA Nuclear Security Enterprise (NSE) to resolve species of similar masses down to acceptable minimum detection limits (MDLs). Some examples of these similar masses are helium-4/deuterium and carbon monoxide/nitrogen. Through the 1980s and 1990s, there were two vendors who supplied and supported these instruments. However, with declining procurements and down turns in the economy, the supply of instruments, service and spare parts from these vendors has become less available, and in some cases, nonexistent. The largest NSE user of this capability is the Savannah River Site (SRS), located near Aiken, South Carolina. The Research and Development Engineering (R&DE) Group in the Savannah River National Laboratory (SRNL) investigated the areas of instrument support that were needed to extend the life cycle of these aging instruments. Their conclusions, as to the focus areas of electromagnetic sector mass spectrometers to address, in order of priority, were electronics, software and hardware. Over the past 3-5 years, the R&DE Group has designed state of the art electronics and software that will allow high resolution legacy mass spectrometers, critical to the NNSA mission, to be operated for the foreseeable future. The funding support for this effort has been from several sources, including the SRS Defense Programs, NNSA Readiness Campaign, Pantex Plant and Sandia National Laboratory. To date, electronics systems have been upgraded on one development system at SRNL, two production systems at Pantex and one production system at Sandia National Laboratory. An NSE working group meets periodically to review strategies going forward. The R&DE Group has also applied their work to the electronics for a Thermal Ionization Mass Spectrometer (TIMS) instrument, which applies a similar mass spectrometric technology for resolving high mass isotopes, such as plutonium and uranium. Due to non-compete clauses for DOE, all work has been performed and applied to instruments which are obsolete and are no longer supported by the original vendor.

Wyrick, S.; Cordaro, J.; Reeves, G.; Mcintosh, J.; Mauldin, C.; Tietze, K.; Varble, D.

2011-06-06T23:59:59.000Z

309

Subsurface Synthesis and Characterization of Ag Nanoparticles...  

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

Synthesis and Characterization of Ag Nanoparticles Embedded in MgO. Subsurface Synthesis and Characterization of Ag Nanoparticles Embedded in MgO. Abstract: Metal nanoparticles...

310

Near-electrode imager  

DOE Patents [OSTI]

An apparatus, near-electrode imager, for employing nuclear magnetic resonance imaging to provide in situ measurements of electrochemical properties of a sample as a function of distance from a working electrode. The near-electrode imager uses the radio frequency field gradient within a cylindrical toroid cavity resonator to provide high-resolution nuclear magnetic resonance spectral information on electrolyte materials.

Rathke, Jerome W. (Lockport, IL); Klingler, Robert J. (Westmont, IL); Woelk, Klaus (Wachtberg, DE); Gerald, II, Rex E. (Brookfield, IL)

2000-01-01T23:59:59.000Z

311

High-resolution ab initio three-dimensional X-ray diffraction microscopy (CXIDB ID 15)  

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

The file contains 125 images corresponding to different tilts of the sample around the y axis at 1 degree intervals. Each image is the result of 4 exposures merged together. For more details see the citation.

Chapman, Henry N.

312

Estimation of boron isotope ratios using high resolution continuum source atomic absorption spectrometry  

Science Journals Connector (OSTI)

In the production of 10B enriched steels, the production–recycling process needs to be closely monitored for inadvertent mix-up of materials with different B isotope levels. A quick and simple method for the estimation of boron isotope ratios in high alloyed steels using high resolution continuum source flame AAS (HR-CS-FAAS) was developed. On the 208.9 nm B line the wavelength of the peak absorption of 10B and 11B differs by 2.5 pm. The wavelength of the peak absorption of boron was determined by fitting a Gauss function through spectra simultaneously recorded by HR-CS-FAAS. It was shown that a linear correlation between the wavelength of the peak absorption and the isotope ratio exists and that this correlation is independent of the total boron concentration. Internal spectroscopic standards were used to compensate for monochromator drift and monochromator resolution changes. Accuracy and precision of the analyzed samples were thereby increased by a factor of up to 1.3. Three steel reference materials and one boric acid CRM, each certified for the boron isotope ratio were used to validate the procedure.

Helmar Wiltsche; Karl Prattes; Michael Zischka; Günter Knapp

2009-01-01T23:59:59.000Z

313

HIGH RESOLUTION PREDICTION OF GAS INJECTION PROCESS PERFORMANCE FOR HETEROGENEOUS RESERVOIRS  

SciTech Connect (OSTI)

This report outlines progress in the second 3 months of the first year of the DOE project ''High Resolution Prediction of Gas Injection Process Performance for Heterogeneous Reservoirs.'' The development of an automatic technique for analytical solution of one-dimensional gas flow problems with volume change on mixing is described. The aim of this work is to develop a set of ultra-fast compositional simulation tools that can be used to make field-scale predictions of the performance of gas injection processes. To achieve the necessary accuracy, these tools must satisfy the fundamental physics and chemistry of the displacement from the pore to the reservoir scales. Thus this project focuses on four main research areas: (1) determination of the most appropriate methods of mapping multicomponent solutions to streamlines and streamtubes in 3D; (2) development of techniques for automatic generation of analytical solutions for one-dimensional flow along a streamline; (3) experimental investigations to improve the representation of physical mechanisms that govern displacement efficiency along a streamline; and (4) theoretical and experimental investigations to establish the limitations of the streamline/streamtube approach. In this report they briefly review the status of the research effort in each area. They then give a more in depth discussion of their development of techniques for analytic solutions along a streamline including volume change on mixing for arbitrary numbers of components.

Franklin M. Orr, Jr.

2001-03-31T23:59:59.000Z

314

High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme  

E-Print Network [OSTI]

We present results of a high resolution numerical study of two dimensional (2d) Rayleigh-Taylor turbulence using a recently proposed thermal lattice Boltzmann method (LBT). The goal of our study is both methodological and physical. We assess merits and limitations concerning small- and large-scale resolution/accuracy of the adopted integration scheme. We discuss quantitatively the requirements needed to keep the method stable and precise enough to simulate stratified and unstratified flows driven by thermal active fluctuations at high Rayleigh and high Reynolds numbers. We present data with spatial resolution up to 4096 x 10000 grid points and Rayleigh number up to Ra ~ 10^11 . The statistical quality of the data allows us to investigate velocity and temperature fluctuations, scale-by-scale, over roughly four decades. We present a detailed quantitative analysis of scaling laws in the viscous, inertial and integral range, supporting the existence of a Bolgiano-like inertial scaling, as expected in 2d systems. We also discuss the presence of small/large intermittent deviation to the scaling of velocity/temperature fluctuations and the Rayleigh dependency of gradients flatness.

L. Biferale; F. Mantovani; M. Sbragaglia; A. Scagliarini; F. Toschi; R. Tripiccione

2010-09-28T23:59:59.000Z

315

High Resolution Parameter Space from a Two Level Model on Semi-Insulating GaAs  

E-Print Network [OSTI]

Semi-insulating Gallium Arsenide (SI-GaAs) samples experimentally show, under high electric fields and even at room temperature, negative differential conductivity in N-shaped form (NNDC). Since the most consolidated model for n-GaAs, namely, "the model", proposed by E. Scholl was not capable to generate the NNDC curve for SI-GaAs, in this work we proposed an alternative model. The model proposed, "the two-valley model" is based on the minimal set of generation recombination equations for two valleys inside of the conduction band, and an equation for the drift velocity as a function of the applied electric field, that covers the physical properties of the nonlinear electrical conduction of the SI-GaAs system. The "two valley model" was capable to generate theoretically the NNDC region for the first time, and with that, we were able to build a high resolution parameter-space of the periodicity (PSP) using a Periodicity-Detection (PD) routine. In the parameter space were observed self-organized periodic structu...

da Silva, S L; de Oliveira, A G; Ribeiro, G M; da Silva, R L

2014-01-01T23:59:59.000Z

316

Seismic data obtained using. 50-caliber machine gun as high-resolution seismic source  

SciTech Connect (OSTI)

A seismic line across a shoestring sandstone served as a test of a .50-caliber machine gun as a high-resolution seismic source in exploring for shallow sandstones. The line crosses part of the Bronson-Xenia oil field, which produces from the Bartlesville sandstone of the Cherokee Group (Pennsylvanian) in Bourbon County, Kansas, at a depth of 622 ft (190 m). The reservoir, which has a flat base and an irregular top, may represent a superposition of fluvial sandstones. The seismic line clearly depicts a lenticular sandstone that is up to 56 ft (17 m) thick. Both the lateral extent of the sandstone body and a slight velocity pull-up of the underlying layers are evident. In addition to the target sandstone, two additional sandstone bodies may be present at the east end of the line, where well control is not available. Analysis of the seismic data indicates that the frequency of the .50-caliber sources is from 30 to 170 Hz. The high frequencies are retained deep into the section. Two shots per shotpoint are the minimum number necessary for acquiring high-quality data, and 12-fold is the minimum acceptable common-depth-point (CDP) coverage. 11 figures.

Seeber, M.D.; Steeples, D.

1986-08-01T23:59:59.000Z

317

Assessment of high-resolution methods for numerical simulations of compressible turbulence with shock waves  

SciTech Connect (OSTI)

Flows in which shock waves and turbulence are present and interact dynamically occur in a wide range of applications, including inertial confinement fusion, supernovae explosion, and scramjet propulsion. Accurate simulations of such problems are challenging because of the contradictory requirements of numerical methods used to simulate turbulence, which must minimize any numerical dissipation that would otherwise overwhelm the small scales, and shock-capturing schemes, which introduce numerical dissipation to stabilize the solution. The objective of the present work is to evaluate the performance of several numerical methods capable of simultaneously handling turbulence and shock waves. A comprehensive range of high-resolution methods (WENO, hybrid WENO/central difference, artificial diffusivity, adaptive characteristic-based filter, and shock fitting) and suite of test cases (Taylor-Green vortex, Shu-Osher problem, shock-vorticity/entropy wave interaction, Noh problem, compressible isotropic turbulence) relevant to problems with shocks and turbulence are considered. The results indicate that the WENO methods provide sharp shock profiles, but overwhelm the physical dissipation. The hybrid method is minimally dissipative and leads to sharp shocks and well-resolved broadband turbulence, but relies on an appropriate shock sensor. Artificial diffusivity methods in which the artificial bulk viscosity is based on the magnitude of the strain-rate tensor resolve vortical structures well but damp dilatational modes in compressible turbulence; dilatation-based artificial bulk viscosity methods significantly improve this behavior. For well-defined shocks, the shock fitting approach yields good results.

Johnsen, Eric [Center for Turbulence Research, Stanford University, Stanford, CA 94305 (United States)], E-mail: johnsen@stanford.edu; Larsson, Johan [Center for Turbulence Research, Stanford University, Stanford, CA 94305 (United States)], E-mail: jola@stanford.edu; Bhagatwala, Ankit V. [Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 94305 (United States); Cabot, William H. [Lawrence Livermore National Laboratory, Livermore, CA 94551 (United States); Moin, Parviz [Center for Turbulence Research, Stanford University, Stanford, CA 94305 (United States); Olson, Britton J. [Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 94305 (United States); Rawat, Pradeep S. [Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA 90095 (United States); Shankar, Santhosh K. [Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 94305 (United States); Sjoegreen, Bjoern [Lawrence Livermore National Laboratory, Livermore, CA 94551 (United States); Yee, H.C. [NASA Ames Research Center, Moffett Field, CA 94035 (United States); Zhong Xiaolin [Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA 90095 (United States); Lele, Sanjiva K. [Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 94305 (United States)

2010-02-20T23:59:59.000Z

318

Appending High-Resolution Elevation Data to GPS Speed Traces for Vehicle Energy Modeling and Simulation  

SciTech Connect (OSTI)

Accurate and reliable global positioning system (GPS)-based vehicle use data are highly valuable for many transportation, analysis, and automotive considerations. Model-based design, real-world fuel economy analysis, and the growing field of autonomous and connected technologies (including predictive powertrain control and self-driving cars) all have a vested interest in high-fidelity estimation of powertrain loads and vehicle usage profiles. Unfortunately, road grade can be a difficult property to extract from GPS data with consistency. In this report, we present a methodology for appending high-resolution elevation data to GPS speed traces via a static digital elevation model. Anomalous data points in the digital elevation model are addressed during a filtration/smoothing routine, resulting in an elevation profile that can be used to calculate road grade. This process is evaluated against a large, commercially available height/slope dataset from the Navteq/Nokia/HERE Advanced Driver Assistance Systems product. Results will show good agreement with the Advanced Driver Assistance Systems data in the ability to estimate road grade between any two consecutive points in the contiguous United States.

Wood, E.; Burton, E.; Duran, A.; Gonder, J.

2014-06-01T23:59:59.000Z

319

High-Resolution Mass Spectroscopic Analysis of Secondary Organic Aerosol Generated by Ozonolysis of Isoprene  

SciTech Connect (OSTI)

The chemical composition of secondary organic aerosol (SOA) generated from the ozonolysis of isoprene (C5H8) in the presence of an OH scavenger was examined using high-resolution electrospray ionization mass spectrometry (ESI-MS). The chemical composition of SOA is complex, with more than 1000 assigned peaks observed in the positive and negative ion mode spectra. Only a small fraction of peaks corresponds to known products of isoprene oxidation, such as pyruvic acid, glycolic acid, methylglyoxal, etc. The absolute majority of the detected peaks correspond to highly oxidized oligomeric constituents of SOA, with an average O:C molar ratio of ~0.6. The corresponding organic mass (OM) to organic oxygen (OO) ratio is OM/OO?2.4. Approximately 8% of oxygen atoms in SOA are in the form of peroxides as quantified with an iodide test. Double bond equivalency (DBE) factors, representing the sum of all double bonds and rings, increase by 1 for every 2-3 additional carbon atoms in the molecule. The prevalent oligomer building blocks are therefore carbonyls or carboxylic acids with a C2-C3 skeleton. Kendrick analysis suggests that simple aldehydes, specifically formaldehyde, acetaldehyde, and methylglyoxal can serve as monomeric building blocks in the observed oligomers. The large number of reactive functional groups, especially organic peroxides and carbonyls, suggests that isoprene/O3 SOA should be prone to chemical and photochemical aging.

Nguyen, Tran B.; Bateman, Adam P.; Bones, David L.; Nizkorodov, Serguei; Laskin, Julia; Laskin, Alexander

2010-02-01T23:59:59.000Z

320

HIGH RESOLUTION PREDICTION OF GAS INJECTION PROCESS PERFORMANCE FOR HETEROGENEOUS RESERVOIRS  

SciTech Connect (OSTI)

This report outlines progress in the second quarter of the third year of the DOE project ''High Resolution Prediction of Gas Injection Process Performance for Heterogeneous Reservoirs''. This report presents results of an investigation of the effects of variation in interfacial tension (IFT) on three-phase relative permeability. We report experimental results that demonstrate the effect of low IFT between two of three phases on the three-phase relative permeabilities. In order to create three-phase systems, in which IFT can be controlled systematically, we employed analog liquids composing of hexadecane, n-butanol, isopropanol, and water. Phase composition, phase density and viscosity, and IFT of three-phase system were measured and are reported here. We present three-phase relative permeabilities determined from recovery and pressure drop data using the Johnson-Bossler-Naumann (JBN) method. The phase saturations were obtained from recovery data by the Welge method. The experimental results indicate that the wetting phase relative permeability was not affected by IFT variation whereas the other two-phase relative permeabilities were clearly affected. As IFT decreases the ''oil'' and ''gas'' phases become more mobile at the same phase saturations.

Franklin M. Orr, Jr.

2003-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Experimental Investigation and High Resolution Simulation of In-Situ Combustion Processes  

SciTech Connect (OSTI)

This final technical report describes work performed for the project 'Experimental Investigation and High Resolution Numerical Simulator of In-Situ Combustion Processes', DE-FC26-03NT15405. In summary, this work improved our understanding of in-situ combustion (ISC) process physics and oil recovery. This understanding was translated into improved conceptual models and a suite of software algorithms that extended predictive capabilities. We pursued experimental, theoretical, and numerical tasks during the performance period. The specific project objectives were (i) identification, experimentally, of chemical additives/injectants that improve combustion performance and delineation of the physics of improved performance, (ii) establishment of a benchmark one-dimensional, experimental data set for verification of in-situ combustion dynamics computed by simulators, (iii) develop improved numerical methods that can be used to describe in-situ combustion more accurately, and (iv) to lay the underpinnings of a highly efficient, 3D, in-situ combustion simulator using adaptive mesh refinement techniques and parallelization. We believe that project goals were met and exceeded as discussed.

Margot Gerritsen; Tony Kovscek

2008-04-30T23:59:59.000Z

322

Ethylene adsorption on Si(100)2×1:?A high-resolution photoemission study  

Science Journals Connector (OSTI)

The adsorption of ethylene on Si(100)2×1 has been investigated at room temperature by high-resolution synchrotron radiation photoemission in the exposure range: 1–1000 L. A consistent picture in favor of molecularly di-? bonded ethylene is obtained from the analysis of the photoemission spectral features, which shows the progressive decreasing of the surface states in the valence band and the Si 2p features related to the surface dimers upon adsorption. By careful fitting of the Si 2p complex envelope, the appearance of a component in the Si 2p core-level spectrum is evidenced already after 1 L exposure to ethylene. This component, which grows with exposure, is assigned to the formation of two Si-C bonds per dimer as a result of ethylene adsorption. The line-shape analysis by model functions permits us to follow the symmetrization of Si-Si dimers, which are known to be asymmetric on the clean surface, and the growth of a Si-C related spectral component upon adsorption. Relative quantitative analysis of the various peak components suggests that the intensity increase of the new component almost completely parallels the progressive decrease of the surface dimer components. No evidence for carbide formation has been found from the C 1s spectrum.

M. P. Casaletto; R. Zanoni; M. Carbone; M. N. Piancastelli; L. Aballe; K. Weiss; K. Horn

2000-12-15T23:59:59.000Z

323

A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - I. Observations and measurements  

E-Print Network [OSTI]

This is the first in a series of papers in which we describe and report the analysis of a large survey of Herbig Ae/Be stars in circular spectropolarimetry. Using the ESPaDOnS and Narval high-resolution spectropolarimeters at the Canada-France-Hawaii and Bernard Lyot Telescopes, respectively, we have acquired 132 circularly-polarised spectra of 70 Herbig Ae/Be stars and Herbig candidates. The large majority of these spectra are characterised by a resolving power of about 65,000, and a spectral coverage from about 3700 ang to 1 micron. The peak SNR per CCD pixel ranges from below 100 (for the faintest targets) to over 1000 (for the brightest). The observations were acquired with the primary aim of searching for magnetic fields in these objects. However, our spectra are suitable for a variety of other important measurements, including rotational properties, variability, binarity, chemical abundances, circumstellar environment conditions and structure, etc. In this first paper, we describe the sample selection, ...

Alecian, E; Catala, C; Grunhut, J H; Landstreet, J D; Bagnulo, S; Böhm, T; Folsom, C P; Marsden, S; Waite, I

2012-01-01T23:59:59.000Z

324

A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - II. Rotation  

E-Print Network [OSTI]

We report the analysis of the rotational properties of our sample of Herbig Ae/Be (HAeBe) and related stars for which we have obtained high-resolution spectropolarimetric observations. Using the projected rotational velocities measured at the surface of the stars, we have calculated the angular momentum of the sample and plotted it as a function of age. We have then compared the angular momentum and the vsini distributions of the magnetic to the non-magnetic HAeBe stars. Finally we have predicted the vsini of the non-magnetic, non-binary ("normal") stars in our sample when they reach the ZAMS, and compared them to various catalogues of the vsini of main-sequence stars. First, we observe that magnetic HAeBe stars are much slower rotators than normal stars, indicating that they have been more efficiently braked than the normal stars. In fact, the magnetic stars have already lost most of their angular momentum, despite their young ages (lower than 1 Myr for some of them). Secondly, our analysis suggests that the...

Alecian, E; Catala, C; Grunhut, J H; Landstreet, J D; Böhm, T; Folsom, C P; Marsden, S

2012-01-01T23:59:59.000Z

325

A full range detector for the HIRRBS high resolution RBS magnetic spectrometer  

SciTech Connect (OSTI)

The UAlbany HIRRBS (High Resolution RBS) system has been updated for better use in rapid analysis. The focal plane detector now covers the full range from U down to O using a linear stepper motor to translate the 1-cm detector across the 30-cm range. Input is implemented with zero-back-angle operation in all cases. The chamber has been modified to allow for quick swapping of sample holders, including a channeling goniometer. A fixed standard surface-barrier detector allows for normal RBS simultaneously with use of the magnetic spectrometer. The user can select a region on the standard spectrum or can select an element edge or an energy point for collection of the expanded spectrum portion. The best resolution currently obtained is about 2-to-3 keV, probably representing the energy width of the incoming beam. Calibration is maintained automatically for any spectrum portion and any beam energy from 1.0 to 3.5 MeV. Element resolving power, sensitivity and depth resolution are shown using several examples. Examples also show the value of simultaneous conventional RBS.

Skala, Wayne G.; Haberl, Arthur W. [Ion Beam Laboratory, University at Albany, 1400 Washington Avenue, Albany, New York 12222 (United States); Bakhru, Hassaram [Ion Beam Laboratory, University at Albany, 1400 Washington Avenue, Albany, New York 12222, United States and College of Nanoscale Science and Engineering, University at Albany, 1400 Washington Avenue, Albany, New York 12203 (United States); Lanford, William [Ion Beam Laboratory, University at Albany, 1400 Washington Avenue, Albany, New York 12222, United States and Physics Department, University at Albany, 1400 Washington Avenue, Albany, New York 12222 (United States)

2013-04-19T23:59:59.000Z

326

A Warm Near-Infrared High-Resolution Spectrograph with Very High Throughput (WINERED)  

E-Print Network [OSTI]

WINERED is a newly built high-efficiency (throughput$ > 25-30\\%$) and high-resolution spectrograph customized for short NIR bands at 0.9-1.35 ${\\rm \\mu}$m. WINERED is equipped with ambient temperature optics and a cryogenic camera using a 1.7 ${\\rm \\mu}$m cut-off HgCdTe HAWAII-2RG array detector. WINERED has two grating modes: one with a conventional reflective echelle grating (R$\\sim$28,300), which covers 0.9-1.35 $\\mu$m simultaneously, the other with ZnSe or ZnS immersion grating (R$\\sim$100,000). We have completed the development of WINERED except for the immersion grating, and started engineering and science observations at the Nasmyth platform of the 1.3 m Araki Telescope at Koyama Astronomical Observatory of Kyoto-Sangyo University in Japan. We confirmed that the spectral resolution ($R\\sim$ 28,300) and the throughput ($>$ 40\\% w/o telescope/atmosphere/array QE) meet our specifications. We measured ambient thermal backgrounds (e.g., 0.06 ${\\rm [e^{-}/sec/pixel]}$ at 287 K), which are roughly consistent ...

Kondo, Sohei; Kobayashi, Naoto; Yasui, Chikako; Mito, Hiroyuki; Fukue, Kei; Nakanishi, Kenshi; Kawanishi, Takafumi; Nakaoka, Tetsuya; Otsubo, Shogo; Kinoshita, Masaomi; Kitano, Ayaka; Hamano, Satoshi; Mizumoto, Misaki; Yamamoto, Ryo; Izumi, Natsuko; Matsunaga, Noriyuki; Kawakita, Hideyo

2015-01-01T23:59:59.000Z

327

Effect of Extent of Natural Subsurface Bioreduction on Fe-mineralogy...  

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

Extent of Natural Subsurface Bioreduction on Fe-mineralogy of Subsurface Sediments. Effect of Extent of Natural Subsurface Bioreduction on Fe-mineralogy of Subsurface Sediments....

328

Apparatus and method to achieve high-resolution microscopy with non-diffracting or refracting radiation  

DOE Patents [OSTI]

An imaging system employing a coded aperture mask having multiple pinholes is provided. The coded aperture mask is placed at a radiation source to pass the radiation through. The radiation impinges on, and passes through an object, which alters the radiation by absorption and/or scattering. Upon passing through the object, the radiation is detected at a detector plane to form an encoded image, which includes information on the absorption and/or scattering caused by the material and structural attributes of the object. The encoded image is decoded to provide a reconstructed image of the object. Because the coded aperture mask includes multiple pinholes, the radiation intensity is greater than a comparable system employing a single pinhole, thereby enabling a higher resolution. Further, the decoding of the encoded image can be performed to generate multiple images of the object at different distances from the detector plane. Methods and programs for operating the imaging system are also disclosed.

Tobin, Jr., Kenneth W.; Bingham, Philip R.; Hawari, Ayman I.

2012-11-06T23:59:59.000Z

329

Optical method and apparatus for detection of surface and near-subsurface defects in dense ceramics  

DOE Patents [OSTI]

A laser is used in a non-destructive manner to detect surface and near-subsurface defects in dense ceramics and particularly in ceramic bodies with complex shapes such as ceramic bearings, turbine blades, races, and the like. The laser`s wavelength is selected based upon the composition of the ceramic sample and the laser can be directed on the sample while the sample is static or in dynamic rotate or translate motion. Light is scattered off surface and subsurface defects using a preselected polarization. The change in polarization angle is used to select the depth and characteristics of surface/subsurface defects. The scattered light is detected by an optical train consisting of a charge coupled device (CCD), or vidicon, television camera which, in turn, is coupled to a video monitor and a computer for digitizing the image. An analyzing polarizer in the optical train allows scattered light at a given polarization angle to be observed for enhancing sensitivity to either surface or near-subsurface defects. Application of digital image processing allows subtraction of digitized images in near real-time providing enhanced sensitivity to subsurface defects. Storing known ``feature masks`` of identified defects in the computer and comparing the detected scatter pattern (Fourier images) with the stored feature masks allows for automatic classification of detected defects. 29 figs.

Ellingson, W.A.; Brada, M.P.

1995-06-20T23:59:59.000Z

330

Optical method and apparatus for detection of surface and near-subsurface defects in dense ceramics  

DOE Patents [OSTI]

A laser is used in a non-destructive manner to detect surface and near-subsurface defects in dense ceramics and particularly in ceramic bodies with complex shapes such as ceramic bearings, turbine blades, races, and the like. The laser's wavelength is selected based upon the composition of the ceramic sample and the laser can be directed on the sample while the sample is static or in dynamic rotate or translate motion. Light is scattered off surface and subsurface defects using a preselected polarization. The change in polarization angle is used to select the depth and characteristics of surface/subsurface defects. The scattered light is detected by an optical train consisting of a charge coupled device (CCD), or vidicon, television camera which, in turn, is coupled to a video monitor and a computer for digitizing the image. An analyzing polarizer in the optical train allows scattered light at a given polarization angle to be observed for enhancing sensitivity to either surface or near-subsurface defects. Application of digital image processing allows subtraction of digitized images in near real-time providing enhanced sensitivity to subsurface defects. Storing known "feature masks" of identified defects in the computer and comparing the detected scatter pattern (Fourier images) with the stored feature masks allows for automatic classification of detected defects.

Ellingson, William A. (Naperville, IL); Brada, Mark P. (Goleta, CA)

1995-01-01T23:59:59.000Z

331

Using electrokinetic phenomena and electrical resistance tomography to characterize the movement of subsurface fluids  

DOE Patents [OSTI]

This invention relates generally to the remote detections of subsurface liquid contaminants using in combination a geophysical technique known as ERT and an EKS. Electrokinetic transport is used to enhance the ability of electrical resistance tomography (ERT) to detect position and movement of subsurface contaminant liquids, particles or ions. ERT images alone are difficult to interpret because of natural inhomogeneities in soil composition and electrical properties. By subtracting two or more ERT images obtained before and after field induced movement, a high contrast image of a plume of distinct electrokinetic properties can be seen. The invention is applicable to important subsurface characterization problems including, as examples, (1) detection of liquid-saturated plumes of contaminants such as those associated with leaks from underground storage tanks containing hazardous concentrated electrolytes, (2) detection and characterization of soils contaminated with organic pollutants such as droplets of gasoline; and (3) monitoring the progress of electrokinetic containment or clean up of underground contamination.

Ramirez, Abelardo L. (Pleasanton, CA); Cooper, John F. (Oakland, CA); Daily, William D. (Livermore, CA)

1996-01-01T23:59:59.000Z

332

Using electrokinetic phenomena and electrical resistance tomography to characterize the movement of subsurface fluids  

DOE Patents [OSTI]

This invention relates generally to the remote detections of subsurface liquid contaminants using in combination a geophysical technique known as ERT and an EKS. Electrokinetic transport is used to enhance the ability of electrical resistance tomography (ERT) to detect position and movement of subsurface contaminant liquids, particles or ions. ERT images alone are difficult to interpret because of natural inhomogeneities in soil composition and electrical properties. By subtracting two or more ERT images obtained before and after field induced movement, a high contrast image of a plume of distinct electrokinetic properties can be seen. The invention is applicable to important subsurface characterization problems including, as examples, (1) detection of liquid-saturated plumes of contaminants such as those associated with leaks from underground storage tanks containing hazardous concentrated electrolytes, (2) detection and characterization of soils contaminated with organic pollutants such as droplets of gasoline; and (3) monitoring the progress of electrokinetic containment or clean up of underground contamination. 1 fig.

Ramirez, A.L.; Cooper, J.F.; Daily, W.D.

1996-02-27T23:59:59.000Z

333

SUBARU HIGH-RESOLUTION SPECTROSCOPY OF COMPLEX METAL ABSORPTION LINES OF THE QUASAR HS 1603+38201  

E-Print Network [OSTI]

SUBARU HIGH-RESOLUTION SPECTROSCOPY OF COMPLEX METAL ABSORPTION LINES OF THE QUASAR HS 1603-resolution spectrum of the quasar HS 1603+3820 (zem = 2.542), observed with the High Dispersion Spectrograph -- quasars: individual (HS 1603+3820) 1. INTRODUCTION The bright quasar HS 1603+3820 (zem = 2.542, B = 15

Iye, Masanori

334

COMPARISON OF WIND AND WIND SHEAR CLIMATOLOGIES DERIVED FROM HIGH-RESOLUTION RADIOSONDES AND THE ECMWF MODEL  

E-Print Network [OSTI]

COMPARISON OF WIND AND WIND SHEAR CLIMATOLOGIES DERIVED FROM HIGH-RESOLUTION RADIOSONDES wind and its vertical gradient, i.e. wind-shear, is characterized as a function of climate region. For a better representation of the average atmospheric wind and shear and their variabilities, high

Stoffelen, Ad

335

Central South Pacific thermocline water circulation from a high-resolution ocean model validated against satellite data  

E-Print Network [OSTI]

with satellite data. We focus on the upper 500 m, where ocean current variability has been barely documented due processes. [3] Neither ocean currents nor ocean temperature vari- ability are well described becauseCentral South Pacific thermocline water circulation from a high-resolution ocean model validated

Paris-Sud XI, Université de

336

The WiggleZ Dark Energy Survey: high-resolution kinematics of luminous star-forming galaxies  

Science Journals Connector (OSTI)

......research-article Papers The WiggleZ Dark Energy Survey: high-resolution kinematics...galaxies selected from the WiggleZ Dark Energy Survey. Selected via ultraviolet and...surveys, such as the WiggleZ Dark Energy Survey. The WiggleZ survey contains......

Emily Wisnioski; Karl Glazebrook; Chris Blake; Ted Wyder; Chris Martin; Gregory B. Poole; Rob Sharp; Warrick Couch; Glenn G. Kacprzak; Sarah Brough; Matthew Colless; Carlos Contreras; Scott Croom; Darren Croton; Tamara Davis; Michael J. Drinkwater; Karl Forster; David G. Gilbank; Michael Gladders; Ben Jelliffe; Russell J. Jurek; I-hui Li; Barry Madore; Kevin Pimbblet; Michael Pracy; David Woods; H. K. C. Yee

2011-11-11T23:59:59.000Z

337

High Resolution Simulation and Characterization of Density-Driven Flow in CO2 Storage in Saline Aquifers  

E-Print Network [OSTI]

at which CO2 gas dissolves into a negatively buoyant aqueous phase, will reach a stabilized state the immiscible CO2 gas that forms on top of the brine from leaking to the surface. However, on geological timeHigh Resolution Simulation and Characterization of Density-Driven Flow in CO2 Storage in Saline

338

Ground-controlled flights, the ELDORA radar, and high-resolution modeling document the historic hurricanes of 2005.  

E-Print Network [OSTI]

Ground-controlled flights, the ELDORA radar, and high-resolution modeling document the historic hurricanes of 2005. O ver the last few decades, the forecasts of tropical cyclone tracks have improved error trends are documented online at www.nhc.noaa. gov/verification.) Difficulties are that the maximum

Houze Jr., Robert A.

339

Two-dimensional position-sensitive gaseous detectors for high-resolution neutron and X-ray diffraction  

Science Journals Connector (OSTI)

Two-dimensional position-sensitive gaseous detectors have been developed at the Geesthacht Neutron Facility (GeNF) for high-resolution...2, 3He/CF4 and Xe/CO2, respectively. One neutron detector is used at the AR...

M. Marmotti; M. Haese-Seiller; R. Kampmann

2002-12-01T23:59:59.000Z

340

Cation sorption on the muscovite (001) surface in chloride solutions using high-resolution X-ray reflectivity  

E-Print Network [OSTI]

Cation sorption on the muscovite (001) surface in chloride solutions using high-resolution X of cation sorption at the (001) muscovite-water interface were investigated in 0.01 and 0.5 m KCl, Cs negative charge arising from structural heteroionic substitutions. This charge is balanced by the sorption

Jacobsen, Steven D.

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

High-resolution modeling of the western North American power system demonstrates low-cost and low-carbon futures  

E-Print Network [OSTI]

High-resolution modeling of the western North American power system demonstrates low-cost and low energy Carbon emissions a b s t r a c t Decarbonizing electricity production is central to reducing of resource cost scenarios, most coal power plants would be replaced by solar, wind, gas, and/or nuclear

Kammen, Daniel M.

342

High-resolution modeling of the western North American power system demonstrates low-cost and low-carbon futures  

E-Print Network [OSTI]

High-resolution modeling of the western North American power system demonstrates low-cost and low t Decarbonizing electricity production is central to reducing greenhouse gas emissions. Exploiting intermittent be replaced by solar, wind, gas, and/or nuclear generation, with intermittent renewable sources providing

Kammen, Daniel M.

343

Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben Ticha a,*  

E-Print Network [OSTI]

Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben accurate high spatial and temporal resolutions wind measurements. Offshore, satellite data are an accurate radar, scatterometer, data fusion, offshore wind energy resource assessment. 1. INTRODUCTION Since

Paris-Sud XI, Université de

344

2402 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 20, NO. 6, DECEMBER 2010 Compact Miniature High-Resolution Thermometer  

E-Print Network [OSTI]

Miniature High-Resolution Thermometer Supradeep Narayana and Yuki Sato Abstract--We report a compact available Neodymium (NdFeB) magnets. The thermometer utilizes the temperature dependence of magnetic coil connected to a dc-SQUID. Based on this approach, we have developed a self- contained thermometer

Sato, Yuki

345

A HIGH RESOLUTION VIEW OF THE WARM ABSORBER IN THE QUASAR MR 2251-178  

SciTech Connect (OSTI)

High resolution X-ray spectroscopy of the warm absorber in a nearby quasar, MR 2251-178 (z = 0.06398), is presented. The observations were carried out in 2011 using the Chandra High Energy Transmission Grating (HETG) and the XMM-Newton Reflection Grating Spectrometer, with net exposure times of approximately 400 ks each. A multitude of absorption lines from C to Fe are detected, revealing at least three warm absorbing components ranging in ionization parameter from log (?/erg cm s{sup –1}) = 1-3 with outflow velocities ?< 500 km s{sup –1}. The lowest ionization absorber appears to vary between the Chandra and XMM-Newton observations, which implies a radial distance of between 9 and 17 pc from the black hole. Several broad soft X-ray emission lines are strongly detected, most notably from He-like oxygen, with FWHM velocity widths of up to 10,000 km s{sup –1}, consistent with an origin from broad-line region (BLR) clouds. In addition to the warm absorber, gas partially covering the line of sight to the quasar appears to be present, with a typical column density of N{sub H} = 10{sup 23} cm{sup –2}. We suggest that the partial covering absorber may arise from the same BLR clouds responsible for the broad soft X-ray emission lines. Finally, the presence of a highly ionized outflow in the iron K band from both the 2002 and 2011 Chandra HETG observations appears to be confirmed, which has an outflow velocity of –15600 ± 2400 km s{sup –1}. However, a partial covering origin for the iron K absorption cannot be excluded, resulting from low ionization material with little or no outflow velocity.

Reeves, J. N.; Gofford, J.; Nardini, E. [Astrophysics Group, School of Physical and Geographical Sciences, Keele University, Keele, Staffordshire, ST5 5BG (United Kingdom); Porquet, D. [Observatoire Astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l'Université, F-67000 Strasbourg (France); Braito, V. [INAF - Osservatorio Astronomico di Brera, Via Bianchi 46 I-23807 Merate (Italy); Turner, T. J. [Center for Space Science and Technology, University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250 (United States); Crenshaw, D. M. [Department of Physics and Astronomy, Georgia State University, Astronomy Offices, One Park Place South SE, Suite 700, Atlanta, GA 30303 (United States); Kraemer, S. B., E-mail: j.n.reeves@keele.ac.uk [Institute for Astrophysics and Computational Sciences, Department of Physics, The Catholic University of America, Washington, DC 20064 (United States)

2013-10-20T23:59:59.000Z

346

High resolution fossil fuel combustion CO2 emission fluxes for the United States  

SciTech Connect (OSTI)

Quantification of fossil fuel CO{sub 2} emissions at fine space and time resolution is emerging as a critical need in carbon cycle and climate change research. As atmospheric CO{sub 2} measurements expand with the advent of a dedicated remote sensing platform and denser in situ measurements, the ability to close the carbon budget at spatial scales of {approx}100 km{sup 2} and daily time scales requires fossil fuel CO{sub 2} inventories at commensurate resolution. Additionally, the growing interest in U.S. climate change policy measures are best served by emissions that are tied to the driving processes in space and time. Here we introduce a high resolution data product (the 'Vulcan' inventory: www.purdue.edu/eas/carbon/vulcan/) that has quantified fossil fuel CO{sub 2} emissions for the contiguous U.S. at spatial scales less than 100 km{sup 2} and temporal scales as small as hours. This data product, completed for the year 2002, includes detail on combustion technology and 48 fuel types through all sectors of the U.S. economy. The Vulcan inventory is built from the decades of local/regional air pollution monitoring and complements these data with census, traffic, and digital road data sets. The Vulcan inventory shows excellent agreement with national-level Department of Energy inventories, despite the different approach taken by the DOE to quantify U.S. fossil fuel CO{sub 2} emissions. Comparison to the global 1{sup o} x 1{sup o} fossil fuel CO{sub 2} inventory, used widely by the carbon cycle and climate change community prior to the construction of the Vulcan inventory, highlights the space/time biases inherent in the population-based approach.

Gurney, Kevin R.; Mendoza, Daniel L.; Zhou, Yuyu; Fischer, Marc L.; Miller, Chris C.; Geethakumar, Sarath; de la Rue du Can, Stephane

2009-03-19T23:59:59.000Z

347

High resolution gamma ray spectroscopy of flares on the east and west limbs of the Sun  

E-Print Network [OSTI]

A new generation of Ge-based high-resolution gamma-ray spectrometers has allowed accurate measurements to be made of the profiles, widths and energies of the gamma-ray lines emitted in the impulsive phases of solar flares. Here we present measurements in two flares of the energies of the de-excitation lines of 12C and 16O at 4.4 and 6.1 MeV respectively by the Ge spectrometer SPI on board INTEGRAL, from which Doppler shifts are derived and compared with those expected from the recoil of 12C and 16O nuclei which were excited by the impacts of flare-accelerated ions. An anomalous Doppler measurement (in terms of recoil theory) has been reported by the Ge spectrometer RHESSI in a flare near the east limb, and explained by a tilt of the magnetic field lines at the footpoint of a magnetic loop away from the vertical, and towards the observer. This might be interpreted to imply a significant difference between the Doppler shifts on the east and west limbs, if it is a general phenomenon. SPI observed both east and west limb flares and found no significant difference in Doppler shifts. We also measured the shapes and fluences of these lines, and their fluence ratio to the 2.2 MeV line from the capture of flare-generated neutrons. Analyses of both quantities using thick-target models parametrized by solar physical and geometric quantities suggest that the two flares studied here also have magnetic fields tilted towards the observer, though the significance of the measurements is not high.

M. J. Harris; V. Tatischeff; J. Kiener; M. Gros; G. Weidenspointner

2006-10-29T23:59:59.000Z

348

Simulation of Urban Climate with High-Resolution WRF Model: A Case Study in Nanjing, China  

SciTech Connect (OSTI)

In this study, urban climate in Nanjing of eastern China is simulated using 1-km resolution Weather Research and Forecasting (WRF) model coupled with a single-layer Urban Canopy Model. Based on the 10-summer simulation results from 2000 to 2009 we find that the WRF model is capable of capturing the high-resolution features of urban climate over Nanjing area. Although WRF underestimates the total precipitation amount, the model performs well in simulating the surface air temperature, relative humidity, and precipitation frequency, diurnal cycle and inter-annual variability. We find that extremely hot events occur most frequently in urban area, with daily maximum (minimum) temperature exceeding 36ºC (28ºC) in around 40% (32%) of days. Urban Heat Island (UHI) effect at surface is more evident during nighttime than daytime, with 20% of cases the UHI intensity above 2.5ºC at night. However, The UHI affects the vertical structure of Planet Boundary Layer (PBL) more deeply during daytime than nighttime. Net gain for latent heat and net radiation is larger over urban than rural surface during daytime. Correspondingly, net loss of sensible heat and ground heat are larger over urban surface resulting from warmer urban skin. Because of different diurnal characteristics of urban-rural differences in the latent heat, ground heat and other energy fluxes, the near surface UHI intensity exhibits a very complex diurnal feature. UHI effect is stronger in days with less cloud or lower wind speed. Model results reveal a larger precipitation frequency over urban area, mainly contributed by the light rain events (<10 mm day-1). Consistent with satellite dataset, around 10-20% more precipitation occurs in urban than rural area at afternoon induced by more unstable urban PBL, which induces a strong vertical atmospheric mixing and upward moisture transport. A significant enhancement of precipitation is found in the downwind region of urban in our simulations in the afternoon.

Yang, Ben; Zhang, Yaocun; Qian, Yun

2012-08-05T23:59:59.000Z

349

HIGH-RESOLUTION FOURIER TRANSFORM SPECTROSCOPY OF LANTHANUM IN Ar DISCHARGE IN THE NEAR-INFRARED  

SciTech Connect (OSTI)

A high-resolution spectrum of lanthanum has been recorded by a Fourier Transform spectrometer in the wavelength range from 833 nm to 1666 nm (6000 cm{sup –1} to 12,000 cm{sup –1}) using as light source a hollow cathode lamp operated with argon as the discharge carrier gas. In total, 2386 spectral lines were detected in this region, of which 555 lines could be classified as La I transitions and 10 lines as La II transitions. All La II transitions and 534 of these La I transitions were classified for the first time, and 6 of the La II transitions and 433 of the classified La I transitions appear to be new lines, which could not be found in the literature. The corresponding energy level data of classified lines are given. Additionally, 430 lines are assigned as Ar I lines and 394 as Ar II lines, of which 179 and 77, respectively, were classified for the first time. All 77 classified Ar II transitions as well as 159 of the classified Ar I transitions are new lines. Furthermore, the wavenumbers of 997 unclassified spectral lines were determined, 235 of which could be assigned as La lines, because of their hyperfine pattern. The remaining 762 lines may be either unclassified Ar lines or unresolved and unclassified La lines with only one symmetrical peak with an FWHM in the same order of magnitude as the Ar lines. The accuracy of the wavenumber for the classified lines with signal-to-noise-ratio higher than four is better than 0.006 cm{sup –1} which corresponds to an accuracy of 0.0004 nm at 830 nm and 0.0017 nm at 1660 nm, respectively.

Güzelçimen, F.; Ba?ar, Gö. [Faculty of Science, Physics Department, Istanbul University, Tr-34134 Vezneciler, Istanbul (Turkey); Tamanis, M.; Kruzins, A.; Ferber, R. [Laser Centre, The University of Latvia, Rainis Boulevard 19, LV-1586 Riga (Latvia); Windholz, L. [Institut für Experimentalphysik, Technische Universität Graz, A-8010 Graz, Petersgasse 16 (Austria); Kröger, S., E-mail: gbasar@istanbul.edu.tr, E-mail: sophie.kroeger@htw-berlin.de [Hochschule für Technik und Wirtschaft Berlin, Wilhelminenhofstr. 75A, D-12459 Berlin (Germany)

2013-10-01T23:59:59.000Z

350

HIGH RESOLUTION OBSERVATIONS OF MULTI-WAVELENGTH EMISSIONS DURING TWO X-CLASS  

E-Print Network [OSTI]

, Newark, NJ 07102 2. Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 yx2@njit Doppler Imager (MDI) and hard X-ray (HXR) data of the Ramaty High Energy Solar Spectroscopic Imager- servations. The derived electric fields in the reconnection current sheet Ec are about 23 V cm-1 and 22 V cm

351

Insights into Stress Corrosion Cracking Mechanisms from High-Resolution Measurements of Crack-Tip Structures and Compositions  

SciTech Connect (OSTI)

The fundamental basis for mechanistic understanding and modeling of SCC remains in question for many systems. Specific mechanisms controlling SCC can vary with changes in alloy characteristics, applied/residual stress or environmental conditions. The local crack electrochemistry, crack-tip mechanics and material metallurgy are the main factors controlling crack growth. These localized properties are difficult or impossible to measure in active cracks. Nevertheless, it is essential to quantitatively interrogate these crack-tip conditions if mechanistic understanding is to be obtained. A major recent advance has been the ability to investigate SCC cracks and crack tips using high-resolution ATEM techniques. ATEM enables the characterization of SCC cracks including trapped tip solution chemistries, corrosion product/film compositions and structures, and elemental composition gradients and defect microstructures along the crack walls and at the crack tip. A wide variety of methods for imaging and analyses at resolutions down to the atomic level can be used to examine the crack and corrosion film characteristics. Surface films and reaction layers have been examined by cross-sectional TEM techniques, but little work had been conducted on environmentally induced internal cracks until that of Lewis and co-workers [1-3] and the current authors [4-17]. This capability combined with modern ATEM techniques has enabled exciting new insights into corrosion processes occurring at buried interfaces and is being used to identify mechanisms controlling IGSCC in boiling water reactor (BWR) and pressurized water reactor (PWR) components. The objective of this paper is to summarize certain results focused on IGSCC of Fe- base and Ni-base stainless alloys in high-temperature water environments. Representative crack-tip examples will be shown to illustrate specific aspects that are characteristic of SCC in the material/environment combinations. Differences and similarities in crack-tip structures- chemistries will be highlighted comparing Fe-base 316/304SS to Ni-base alloy 600/182 and for tests in oxidizing versus hydrogenated water environments.

Bruemmer, Stephen M.; Thomas, Larry E.

2010-04-05T23:59:59.000Z

352

E-Print Network 3.0 - angular differential imaging Sample Search...  

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

Sciences 13 Multilevel bioluminescence tomography based on radiative transfer equation Summary: with angular-resolved data has the potential for high-resolution imaging....

353

Diffraction with a coherent X-ray beam: dynamics and imaging  

Science Journals Connector (OSTI)

Techniques for coherent X-ray scattering measurements are detailed. Applications in the study of the dynamics of fluctuations and in lensless high-resolution imaging are described.

Livet, F.

2007-02-15T23:59:59.000Z

354

Subsurface Biogeochemical Research (SBR) Contractor-Grantee Workshop--Abstracts  

E-Print Network [OSTI]

Abiotic Reactions in Hanford 300 Area Subsurface Sedimentsin the subsurface at Hanford’s 300 Area. To initially studycore samples from the Hanford 300 Area IFRC site. Uranium

Hazen, Terry C.

2010-01-01T23:59:59.000Z

355

JSR-14-Task-013 Subsurface Characterization Letter Report_09192014...  

Energy Savers [EERE]

of the state of stress of engineered subsurface systems in order to address major energy and security challenges of the nation. In addition to the engineered subsurface being...

356

High-resolution NMR study of a synthetic DNA-RNA hybrid dodecamer containing the consensus Pribnow promoter sequence: d(CGTTATAATGCG).cntdot.r(CGCAUUAUAACG)  

Science Journals Connector (OSTI)

High-resolution NMR study of a synthetic DNA-RNA hybrid dodecamer containing the consensus Pribnow promoter sequence: d(CGTTATAATGCG).cntdot.r(CGCAUUAUAACG) ...

Shan Ho Chou; Peter Flynn; Brian Reid

1989-03-01T23:59:59.000Z

357

High resolution, low cost, privacy preserving human motion tracking system via passive thermal sensing  

E-Print Network [OSTI]

Thermal imaging is powerful but expensive. This thesis presents an alternative thermal sensing system capable of tracking human motion by using a novel projection mechanism from an array of inexpensive single-bit thermal ...

Browarek, Sharmeen

2010-01-01T23:59:59.000Z

358

A High Resolution Ultrawideband Wall Penetrating Erman Engin, Berkehan iftiolu, Meri zcan and brahim Tekin  

E-Print Network [OSTI]

for underground mine detection [1], [2], through the wall imaging [3], cancerous tissue detection applications [4 respiratory activity of a human behind a 23 cm thick brick wall. Keywords: UWB Radar, Wall penetrating Radar

Yanikoglu, Berrin

359

Tracing superior longitudinal fasciculus connectivity in the human brain using high resolution diffusion tensor tractography  

Science Journals Connector (OSTI)

The major language pathways such as superior longitudinal fasciculus (SLF) pathways have been outlined by experimental and ... diffusion tensor imaging (DTI) studies. The SLF I and some of the superior parietal l...

Arash Kamali; Adam E. Flanders; Joshua Brody…

2014-01-01T23:59:59.000Z

360

Isotropic 3D fast spin-echo imaging versus standard 2D imaging at 3.0 T of the knee—image quality and diagnostic performance  

E-Print Network [OSTI]

SB (2007) High-resolution 3D cartilage imaging with IDEALMa Thomas M. Link Isotropic 3D fast spin-echo imaging versusintermediate-weighted (IM-w) 3D fast spin-echo (FSE) se-

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Measurement method for roll angular displacement with a high resolution by using diffraction gratings and a heterodyne interferometer  

SciTech Connect (OSTI)

The roll angle measurement is difficult to be achieved directly using a typical commercial interferometer due to its low sensitivity in axial direction, where the axial direction is orthogonal to the plane of the roll angular displacement. A roll angle measurement method combined diffraction gratings with a laser heterodyne interferometer is discussed in this paper. The diffraction grating placed in the plane of a roll angular displacement and the interferometer arranged in the plane's orthogonal direction, constitute the measurement pattern for the roll angle with high resolution. The roll angular displacement, considered as the linear, can be tested precisely when the corresponding angle is very small. Using the proposed method, the angle roll measurement obtains the high resolution of 0.002{sup ?}. Experiment has proved its feasibility and practicability.

Tang, Shanzhi, E-mail: shanzhit@gmail.com [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China) [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China); Wang, Zhao [School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China)] [School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China); Gao, Jianmin; Guo, Junjie [State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054 (China)] [State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054 (China)

2014-04-15T23:59:59.000Z

362

High-resolution mapping of quantum efficiency of silicon photodiode via optical-feedback laser microthermography  

SciTech Connect (OSTI)

We map the external quantum efficiency (QE) distribution of a silicon photodiode (PD) sample via a thermographic imaging technique based on optical-feedback laser confocal microscopy. An image pair consisting of the confocal reflectance image and the 2D photocurrent map is simultaneously acquired to delineate the following regions of interest on the sample: the substrate, the n-type region, the pn overlay, and the bonding pad. The 2D QE distribution is derived from the photocurrent map to quantify the optical performance of these sites. The thermal integrity of the sample is then evaluated by deriving the rate of change of QE with temperature T at each point on the silicon PD. These gradient maps function not only as stringent measures of local thermal QE activity but they also expose probable defect locations on the sample at high spatial resolution - a capability that is not feasible with existing bulk measurement techniques.

Cemine, Vernon Julius; Blanca, Carlo Mar; Saloma, Caesar

2006-09-20T23:59:59.000Z

363

High resolution UHV-AFM surface analysis on polymeric materials: Baltic Amber  

Science Journals Connector (OSTI)

In this paper we present, for the first time, the results from Atomic Force Microscopy (AFM) surface studies from freshly fractured Baltic Amber samples, carried out under ultrahigh vacuum (UHV) conditions from micrometer to nanometer resolution. The micrometric AFM images provide a structural clue to the birefringent behavior occasionally observed with amber samples. Two-dimensional pair-distance distributions of the nanometric AFM images prove the completely amorphous structure of the material. This, together with the detection of individual motifs such as aromatic rings, supports the notion of amber being an amorphous polymeric organic network, consistent with the accompanying X-Ray Photoelectron spectroscopy (XPS) data. No nanocrystalline inclusions could be found. The results also show that it is possible to obtain atomically resolved AFM images from amorphous dielectric surfaces.

E. Barletta; K. Wandelt

2011-01-01T23:59:59.000Z

364

Floating insulated conductors for heating subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation includes a conduit located in a first opening in the subsurface formation. Three electrical conductors are located in the conduit. A return conductor is located inside the conduit. The return conductor is electrically coupled to the ends of the electrical conductors distal from the surface of the formation. Insulation is located inside the conduit. The insulation electrically insulates the three electrical conductors, the return conductor, and the conduit from each other.

Burns, David; Goodwin, Charles R.

2014-07-29T23:59:59.000Z

365

Ames Lab 101: Real-Time 3D Imaging  

ScienceCinema (OSTI)

Ames Laboratory scientist Song Zhang explains his real-time 3-D imaging technology. The technique can be used to create high-resolution, real-time, precise, 3-D images for use in healthcare, security, and entertainment applications.

Zhang, Song

2012-08-29T23:59:59.000Z

366

High-resolution storage-ring measurements of the dissociative recombination of H{sub 3}{sup +} using a supersonic expansion ion source  

SciTech Connect (OSTI)

We have performed measurements of the dissociative electron recombination (DR) of H{sub 3}{sup +} at the ion storage ring TSR utilizing a supersonic expansion ion source. The ion source has been characterized by continuous wave cavity ring-down spectroscopy. We present high-resolution DR rate coefficients for different nuclear spin modifications of H{sub 3}{sup +} combined with precise fragment imaging studies of the internal excitation of the H{sub 3}{sup +} ions inside the storage ring. The measurements resolve changes in the energy dependence between the ortho-H{sub 3}{sup +} and para-H{sub 3}{sup +} rate coefficients at low center-of-mass collision energies. Analysis of the imaging data indicates that the stored H{sub 3}{sup +} ions may have higher rotational temperatures than previously assumed, most likely due to collisional heating during the extraction of the ions from the ion source. Simulations of the ion extraction shed light on possible origins of the heating process and how to avoid it in future experiments.

Kreckel, Holger; Crabtree, Kyle N.; Tom, Brian A. [Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Novotny, Oldrich; Lestinsky, Michael [Columbia Astrophysics Laboratory, 550 West 120th Street, New York, New York 10027 (United States); Buhr, Henrik [Faculty of Physics, Weizmann Institute of Science, Rehovot 76100 (Israel); Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Petrignani, Annemieke; Berg, Max H.; Bing, Dennis; Grieser, Manfred; Krantz, Claude; Mendes, Mario B.; Nordhorn, Christian; Repnow, Roland; Stuetzel, Julia; Wolf, Andreas [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Thomas, Richard D. [Department of Physics, Stockholm University, Alba Nova, S-106 91 Stockholm (Sweden); McCall, Benjamin J. [Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Department of Astronomy, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)

2010-10-15T23:59:59.000Z

367

High Resolution Imaging of in situ Root Hair Development to Assess Oilseed Species Responses to Water Stress  

E-Print Network [OSTI]

3: Root hair geometry for canola, camelina, flax, and lentilof four crop species, canola (Brassica napus), camelina (RSA (Pcanola and camelina had the

Hammac, Warren Ashley; Pan, William; Bolton, Ronald; Koenig, Richard

2009-01-01T23:59:59.000Z

368

Two-beam ultrabroadband coherent anti-Stokes Raman spectroscopy for high resolution gas-phase multiplex imaging  

SciTech Connect (OSTI)

We propose and develop a method for wideband coherent anti-Stokes Raman spectroscopy (CARS) in the gas phase and demonstrate the single-shot measurement of N{sub 2}, H{sub 2}, CO{sub 2}, O{sub 2}, and CH{sub 4}. Pure-rotational and vibrational O-, Q-, and S- branch spectra are collected simultaneously, with high spectral and spatial resolution, and within a single-laser-shot. The relative intensity of the rotational and vibrational signals can be tuned arbitrarily using polarization techniques. The ultrashort 7 fs pump and Stokes pulses are automatically overlapped temporally and spatially using a two-beam CARS technique, and the crossed probe beam allows for excellent spatial sectioning of the probed location.

Bohlin, Alexis; Kliewer, Christopher J., E-mail: cjkliew@sandia.gov [Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550 (United States)

2014-01-20T23:59:59.000Z

369

Astron. Nachr./AN 32X (2002) X, XXXXXX Imaging Magnetographs for High-Resolution Solar Observations in  

E-Print Network [OSTI]

Magnetograph (VIM) is basically a twin of IRIM for observations in the wavelength range from 550 nm to 700 nm goals of VIM and IRIM are high temporal and spatial resolution observations while maintaining moderate

370

Single-cell resolution in high-resolution synchrotron X-ray CT imaging with gold nanoparticles  

Science Journals Connector (OSTI)

It is demonstrated that single-cell resolution can be obtained ex vivo in the brain of small animals using gold nanoparticles with the synchrotron-based computed tomography technique.

Sch?ltke, E.

2013-12-11T23:59:59.000Z

371

High-resolution tomographic imaging of a human cerebellum: comparison of absorption and grating-based phase contrast  

Science Journals Connector (OSTI)

...Technische Universitat Munchen, , Garching, Germany 4 Institute for Materials Research, , GKSS Research Centre, , Geesthacht, Germany 5 Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, , Villigen, Switzerland 6 Institute of Microstructure...

2010-01-01T23:59:59.000Z

372

E-Print Network 3.0 - assessment imaging issues Sample Search...  

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

the super-resolution (SR) of images and video... . The term SR is used to describe the process of obtaining a high-resolution (HR) image, or a sequence of HR... images, from a set...

373

Dental CT: imaging technique, anatomy, and pathologic conditions of the jaws  

Science Journals Connector (OSTI)

In addition to conventional imaging methods, dental CT has become an established method for anatomic imaging of the jaws prior to dental implant placement. More recently, this high- ... resolution imaging techni...

André Gahleitner; G. Watzek; H. Imhof

2003-02-01T23:59:59.000Z

374

High Resolution Segmentation with a Time-of-Flight 3D-Camera using the Example  

E-Print Network [OSTI]

to film the blackboard, the drawings can be rendered as a crisp image with the usual video compression arises because we have two ar- eas of the screen competing for the viewer's eye: the video window showing the instructor and the board window (for a detailed explanation of this psychological issue see [18]). In order

Rojas, Raúl

375

Visualization of Three-Dimensional Ultra-High Resolution OCT in Virtual Reality  

E-Print Network [OSTI]

to opaque axis-parallel slices without the ability to map opacity to the data values and see through author e-mail: jschulze@ucsd.edu #12;Glittenberg et al. [7] ray-trace 3D OCT image stacks to create

Schulze, Jürgen P.

376

Photothermal imaging scanning microscopy  

DOE Patents [OSTI]

Photothermal Imaging Scanning Microscopy produces a rapid, thermal-based, non-destructive characterization apparatus. Also, a photothermal characterization method of surface and subsurface features includes micron and nanoscale spatial resolution of meter-sized optical materials.

Chinn, Diane (Pleasanton, CA); Stolz, Christopher J. (Lathrop, CA); Wu, Zhouling (Pleasanton, CA); Huber, Robert (Discovery Bay, CA); Weinzapfel, Carolyn (Tracy, CA)

2006-07-11T23:59:59.000Z

377

Microstructure development in particulate coatings examined with high-resolution cryogenic scanning electron microscopy  

SciTech Connect (OSTI)

The authors used cryogenic scanning electron microscopy to examine the early stages of latex film formation. They visualized the influence of ionic strength and extent of carboxylation in latex-calcium carbonate formulations and in latex-only formulations. Results demonstrated that latex particles deposited on calcium carbonate surfaces creating a suspension of carboxylic acid-stabilized calcium carbonate particles. Images of consolidation fronts showed that variation of ionic strength and extent of carboxylation dramatically changes the way latex particles consolidate and form films.

Sheehan, J.G.; Davis, H.T.; Scriven, L.E. [Univ. of Minnesota, Minneapolis, MN (United States); Takamura, Koichi [BASF Corp., Charlotte, NC (United States)

1993-12-01T23:59:59.000Z

378

High-Resolution Simulation of Pore-Scale Reactive Transport Processes Associated with Carbon Sequestration  

Science Journals Connector (OSTI)

New investigative tools combined with experiments and computational methods are being developed to build a next-generation understanding of molecular-to-pore-scale processes in fluid-rock systems and to demonstrate the ability to control critical aspects of flow and transport in porous rock media in particular as applied to geologic sequestration of CO. Of scientific interest is to establish the rules governing emergent behavior at the porous-continuum macroscale under far from equilibrium conditions by carefully understanding the behavior at the underlying pore microscale. To this end the authors present a direct numerical simulation modeling capability that can resolve flow and transport processes in geometric features obtained from the image data of realistic pore space at unprecedented scale and resolution. Here they focus on scaling a new algorithmic approach based on embedded boundary finite-volume methods and algebraic multigrid. They demonstrate the scalability of this new capability known as Chombo-Crunch to more than 100 000 processor cores and show results from pore-scale flow and transport in the realistic pore space obtained from image data.

2014-01-01T23:59:59.000Z

379

High-Resolution Radio Continuum Measurements of the Nuclear Disks of Arp 220  

E-Print Network [OSTI]

We present new Karl G. Jansky Very Large Array radio continuum images of the nuclei of Arp 220, the nearest ultra-luminous infrared galaxy. These images have both the angular resolution to study detailed morphologies of the two nuclei that power the system and sensitivity to a wide range of spatial scales. At 33 GHz, and with a resolution of 0".081 x 0".063 (29.9 x 23.3 pc), we resolve the emission surrounding both nuclei and conclude that is mostly synchrotron in nature. The spatial distributions of radio emission in both nuclei are well described by exponential profiles. These have deconvolved half-light radii of 51 and 35 pc for the eastern and western nuclei, and they match the number density profile of radio supernovae observed with very long baseline interferometry. This similarity might be due to the fast cooling of cosmic rays electrons caused by the presence of a strong (~ mG) magnetic field in this system. We estimate high luminosity surface densities of $\\mathrm{\\Sigma_{IR} \\sim 4.2^{+1.6}_{-0.7} \\...

Barcos-Muñoz, Loreto; Evans, Aaron S; Privon, George C; Armus, Lee; Condon, Jim; Mazzarella, Joseph M; Meier, David S; Momjian, Emmanuel; Murphy, Eric J; Ott, Juerguen; Reichardt, Ashely; Sakamoto, Kazushi; Sanders, David B; Schinnerer, Eva; Stierwalt, Sabrina; Surace, Jason A; Thompson, Todd A; Walter, Fabian

2014-01-01T23:59:59.000Z

380

High-resolution methods for preserving the sum of mass fractions: improved x-scheme and an alterntive  

SciTech Connect (OSTI)

When high resolution convection schemes are used for discretizing chemical species mass balance equations, the mass fractions are not guaranteed to add to one. We show that a proposed remedy called χ ?scheme (Darwish and Moukalled, Comput. Methods Appl. Mech. Engrg. 192 (2003): 1711) will degrade to a diffusive first-order scheme when a chemical species vanishes from the mixture, for example, because of chemical reactions. We propose an improvement to the χ -scheme to overcome this problem. Furthermore, a computationally efficient alternative scheme is proposed and evaluated with several examples, to quantify the improvements in the accuracy and the computational time.

Syamlal, M.; Benyahia

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Measurement of low radioactivity background in a high voltage cable by high resolution inductively coupled plasma mass spectrometry  

SciTech Connect (OSTI)

The measurement of naturally occurring low level radioactivity background in a high voltage (HV) cable by high resolution inductively coupled plasma mass spectrometry (HR ICP MS) is presented in this work. The measurements were performed at the Chemistry Service of the Gran Sasso National Laboratory. The contributions to the radioactive background coming from the different components of the heterogeneous material were separated. Based on the mass fraction of the cable, the whole contamination was calculated. The HR ICP MS results were cross-checked by gamma ray spectroscopy analysis that was performed at the low background facility STELLA (Sub Terranean Low Level Assay) of the LNGS underground lab using HPGe detectors.

Vacri, M. L. di; Nisi, S.; Balata, M. [Gran Sasso National Laboratory, Chemistry Service, SS 17bis km 18.910, 67100 Assergi (Aq) (Italy)] [Gran Sasso National Laboratory, Chemistry Service, SS 17bis km 18.910, 67100 Assergi (Aq) (Italy)

2013-08-08T23:59:59.000Z

382

High-resolution X-ray spectroscopy of hollow atoms created in plasma heated by subpicosecond laser radiation  

SciTech Connect (OSTI)

The investigations of ultrashort (0.4-0.6 ps) laser pulse radiation interaction with solid targets have been carried out. The Trident subpicosecond laser system was used for plasma creation. The X-ray plasma emission was investigated with the help of high-resolution spectrographs with spherically bent mica crystals. It is shown that when high contrast ultrashort laser pulses were used for plasma heating its emission spectra could not be explained in terms of commonly used theoretical models, and transitions in so called {open_quotes}hollow atoms{close_quotes} must be taken into account for adequate description of plasma radiation.

Faenov, A.Ya.; Magunov, A.I.; Pikuz, T.A. [Multicharged Ions Spectra Data Center of VNIIFTRI, Moscow (Russian Federation)] [and others

1997-10-01T23:59:59.000Z

383

Subsurface Science (The Molecular Environmental Science Group) |  

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

Subsurface Science Subsurface Science BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne arrow Subsurface Science The Molecular Environmental Science Group (MESG) The MESG is part of the Biosciences Division at Argonne National Laboratory. One of the main foci during the creation and growth of the MESG has been the development of an internationally recognized integrated multidisciplinary scientific team focused on the investigation of fundamental biogeochemical questions. Presently, expertise that is represented by members of the MES Group includes x-ray Physics, Environmental Chemistry, Environmental Microbiology, (Bio)geochemistry, and radiolimnology. Additional expertise in electron microscopy, x-ray microscopy, Microbial Ecology, and Bioinformatics often is provided by collaborations with scientists outside of our group.

384

New developments in high resolution borehole seismology and their applications to reservoir development and management  

SciTech Connect (OSTI)

Single-well seismology, Reverse Vertical Seismic Profiles (VSP`s) and Crosswell seismology are three new seismic techniques that we jointly refer to as borehole seismology. Borehole seismic techniques are of great interest because they can obtain much higher resolution images of oil and gas reservoirs than what is obtainable with currently used seismic techniques. The quality of oil and gas reservoir management decisions depend on the knowledge of both the large and the fine scale features in the reservoirs. Borehole seismology is capable of mapping reservoirs with an order of magnitude improvement in resolution compared with currently used technology. In borehole seismology we use a high frequency seismic source in an oil or gas well and record the signal in the same well, in other wells, or on the surface of the earth.

Paulsson, B.N.P. [Chevron Petroleum Technology Company, La Habra, CA (United States)

1997-08-01T23:59:59.000Z

385

Acetylene adsorption on the Si(111)-(7×7) surface: Ultraviolet photoemission and high-resolution electron-energy-loss spectroscopies  

Science Journals Connector (OSTI)

The room temperature adsorption and the thermal reaction of acetylene on the Si(111)-(7×7) surface has been investigated by means of ultraviolet-photoemission spectroscopy and high-resolution electron-energy-loss spectroscopy (HREELS). In the first stage of the adsorption process, the evolution of the restatom- and adatom-related electronic states as a function of acetylene exposure is well described by a modified di-?-bonding model, in which the metallic character of the (7×7) surface plays a fundamental role. For higher exposure, all the restatom dangling bonds are saturated and the adsorption process continues through saturation of the remaining adatoms. In this phase, a molecular tilting is observed, possibly accompanied by a surface atom rearrangement. Upon annealing to 600 °C, acetylene dehydrogenation and partial desorption occur, as demonstrated by the disappearance of the C-H modes in HREELS and the reappearance of the adatom and restatom dangling-bond states in valence-band spectra. At 700 °C the formation of a Si-C compound is observed. Atomic-force-microscopy topographic images taken ex situ after annealing to 800 °C show that the Si-C interface is constituted by islands with lateral dimension of ?300?Å, while the overall surface roughness is 10–20?Å.

V. De Renzi; R. Biagi; U. del Pennino

2001-09-18T23:59:59.000Z

386

Seismic Imaging and Monitoring  

SciTech Connect (OSTI)

I give an overview of LANL's capability in seismic imaging and monitoring. I present some seismic imaging and monitoring results, including imaging of complex structures, subsalt imaging of Gulf of Mexico, fault/fracture zone imaging for geothermal exploration at the Jemez pueblo, time-lapse imaging of a walkway vertical seismic profiling data for monitoring CO{sub 2} inject at SACROC, and microseismic event locations for monitoring CO{sub 2} injection at Aneth. These examples demonstrate LANL's high-resolution and high-fidelity seismic imaging and monitoring capabilities.

Huang, Lianjie [Los Alamos National Laboratory

2012-07-09T23:59:59.000Z

387

Induction heaters used to heat subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation includes an elongated electrical conductor located in the subsurface formation. The electrical conductor extends between at least a first electrical contact and a second electrical contact. A ferromagnetic conductor at least partially surrounds and at least partially extends lengthwise around the electrical conductor. The electrical conductor, when energized with time-varying electrical current, induces sufficient electrical current flow in the ferromagnetic conductor such that the ferromagnetic conductor resistively heats to a temperature of at least about 300.degree. C.

Nguyen, Scott Vinh (Houston, TX); Bass, Ronald M. (Houston, TX)

2012-04-24T23:59:59.000Z

388

Heating systems for heating subsurface formations  

DOE Patents [OSTI]

Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.

Nguyen, Scott Vinh (Houston, TX); Vinegar, Harold J. (Bellaire, TX)

2011-04-26T23:59:59.000Z

389

Climatic change causes abrupt changes in forest composition, inferred from a high-resolution pollen record, southwestern Quebec, Canada  

Science Journals Connector (OSTI)

Abstract A pollen profile from a lake with varved sediments sampled at continuous 10-year intervals and spanning the past 1000 years was analyzed to understand the effects of climate change and anthropogenic activity on forests in southwestern Quebec. Pollen assemblages were dominated by arboreal taxa, primarily Pinus, Tsuga, Betula and Fagus. Between 990 and 1560 AD, pollen accumulation rates and percentages of hardwoods (Betula, Fagus, Acer, Ulmus, Tilia) and Tsuga were relatively high. At 1560 AD, \\{PARs\\} of many hardwood taxa (Fagus, Acer, Betula, Fraxinus, Ulmus) and Tsuga abruptly decreased, some remaining low for the remainder of the record (Tsuga, Fagus, Acer), but others increasing after 50 years (Betula, Fraxinus). An increase in non-arboreal pollen between 1810 and 2010 AD was caused by European settlement of the area. The transition in the pollen assemblages beginning at 1560 AD and a climate reconstruction based on these data shows an abrupt climate cooling had a significant impact on the pollen accumulation rates of the region within a couple of decades. A synthesis of this record with other high-resolution and well-dated pollen data from the conifer-hardwood forest of eastern North America shows consistent results across the whole area, indicating that very-high resolution pollen data can provide insight into multi-decadal climate variability and its impact on forest vegetation.

Nathalie Paquette; Konrad Gajewski

2013-01-01T23:59:59.000Z

390

High resolution reservoir architecture of late Jurassic Haynesville ramp carbonates in the Gladewater field, East Texas Salt Basin  

SciTech Connect (OSTI)

The East Texas Salt Basin contains numerous gas fields within Upper Jurassic Haynesville ramp-complex reservoirs. A sequenced-keyed, high-resolution zonation scheme was developed for the Haynesville Formation in Gladewater field by integrating core description, well-log, seismic, porosity and permeability data. The Haynesville at Gladewater represents a high-energy ramp system, localized on paleotopographic highs induced by diapirism of Callovian Age Salt (Louann). Ramp crest grainstones serve as reservoirs. We have mapped the distribution of reservoir facies within a hierarchy of upward-shallowing parasequences grouped into low-frequency sequences. The vertical stacking patterns of parasequences and sequences reflect the interplay of eustasy, sediment accumulation patterns, and local subsidence (including salt movement and compaction). In this study we draw on regional relations from analogous, Jurassic systems in Mexico to constrain the stratigraphic architecture, age model, and facies model. Additionally, salt-cored Holocene, grain-rich shoals from the Persian Gulf provide excellent facies analogs. The result is a new high-resolution analysis of reservoir architecture at a parasequence scale that links reservoir facies to depositional facies. The new stratigraphy scheme demonstrates that different geographic portions of the field have markedly distinct reservoir intervals, both in terms of total pay and the sequence-stratigraphic interval within which it occurs. Results from this study are used to evaluate infill drill well potential, in well planning, for updating reservoir models, and in refining field reserve estimates.

Goldhammer, R.K. [Texas Bureau of Mines and Geology, Houston, TX (United States)

1996-12-31T23:59:59.000Z

391

Wide-open, high-resolution microwave/millimeter-wave Doppler frequency shift estimation using photonics technology  

E-Print Network [OSTI]

Today, wide-open, high-resolution Doppler frequency shift (DFS) estimation is essential for radar, microwave/millimeter-wave, and communication systems. Using photonics technology, an effective approach is proposed and experimentally demonstrated, providing a high-resolution and frequency-independent solution. In the approach consisting of two cascaded opto-electronic modulators, DFS between the transmitted microwave/ millimeter-wave signal and the received echo signal is mapped into a doubled spacing between two target optical sidebands. Subsequently, the DFS is then estimated through the spectrum analysis of a generated low-frequency electrical signal, with an improved resolution by a factor of 2. In experiments, DFSs from -90 to 90 KHz are successfully estimated for microwave/millimeter-wave signals at 10, 15, and 30 GHz, where estimation errors keep lower than +/- 5e-10 Hz. For radial velocity measurement, these results reveal a range from 0 to 900 m/s (0 to 450 m/s) and a resolution of 1e-11 m/s (5e-12 m...

Zou, Xihua; Lu, Bing; Pan, Wei; Yan, Lianshan; Shao, Liyang

2014-01-01T23:59:59.000Z

392

High resolution 17 keV to 75 keV backlighters for High Energy Density experiments  

SciTech Connect (OSTI)

We have developed 17 keV to 75 keV 1-dimensional and 2-dimensional high-resolution (< 10 {micro}m) radiography using high-intensity short pulse lasers. High energy K-{alpha} sources are created by fluorescence from hot electrons interacting in the target material after irradiation by lasers with intensity I{sub L} > 10{sup 17} W/cm{sup 2}. We have achieved high resolution point projection 1-dimensional and 2-dimensional radiography using micro-foil and micro-wire targets attached to low-Z substrate materials. The micro-wire size was 10 {micro}m x 10 {micro}m x 300 {micro}m on a 300 {micro}m x 300 {micro}m x 5 {micro}m CH substrate. The radiography performance was demonstrated using the Titan laser at LLNL. We observed that the resolution is dominated by the micro-wire target size and there is very little degradation from the plasma plume, implying that the high energy x-ray photons are generated mostly within the micro-wire volume. We also observe that there are enough K{alpha} photons created with a 300 J, 1-{omega}, 40 ps pulse laser from these small volume targets, and that the signal-to-noise ratio is sufficiently high, for single shot radiography experiments. This unique technique will be used on future high energy density (HED) experiments at the new Omega-EP, ZR and NIF facilities.

Park, H; Maddox, B R; Giraldez, E; Hatchett, S P; Hudson, L; Izumi, N; Key, M H; Pape, S L; MacKinnon, A J; MacPhee, A G; Patel, P K; Phillips, T W; Remington, B A; Seely, J F; Tommasini, R; Town, R; Workman, J

2008-02-25T23:59:59.000Z

393

A high-resolution soft x-ray spectrometer on the MAST tokamak  

SciTech Connect (OSTI)

A curved crystal spectrometer in Johann configuration has been implemented on MAST to obtain values for electron temperature, ion temperature and toroidal velocity. The spectrometer is used to examine medium Z impurities in the soft x-ray region by utilising a Silicon (111) crystal, bent using a 4 pin bending jig, and a CCD detector ({delta}t=8 ms). Helium-like Argon emissions from 3.94 to 4.00 A have been examined using a crystal radius of 859.77 mm. The Bragg angle and crystal radius can be adjusted with relative ease. The spectrometer can be scanned toroidally and poloidally to include a radial view which facilitates absolute velocity measurements by assuming radial velocity =0. Doppler shifts of 2.3x10{sup -5} A (1.8 kms{sup -1}) can be measured. The line of sight is shared with a neutral particle analyzer, which enables in situ ion temperature comparisons. Ray tracing has been used for the development of new imaging spectrometers, using spherical/toroidal crystals, planned to be implemented on MAST.

Nelson, M.J.; Barnsley, R.; Keenan, F.; Meyer, H.; Bunting, C.A.; Carolan, P.G.; Conway, N.J.; Cunningham, G.; Lehane, I.; Tournianski, M.R. [Queens University, Belfast, N. Ireland BT7 1NN (United Kingdom); EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)

2004-10-01T23:59:59.000Z

394

Use of High-Resolution 31P-labeled Topical Magnetic Resonance Spectroscopy to Monitor in Vivo Tumor Metabolism in Rats  

Science Journals Connector (OSTI)

...research-article Basic Sciences Use of High-Resolution 31P-labeled Topical Magnetic Resonance Spectroscopy...J. R. 31PNuclear magnetic resonance studies of...detection by nuclear magnetic resonance. Science (Wash. DC), 171...

M. G. Irving; S. J. Simpson; J. Field; and D. M. Doddrell

1985-02-01T23:59:59.000Z

395

NETL: News Release - New, Low-Cost Approach to 4-D Imaging of CO2  

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

7, 2005 7, 2005 New, Low-Cost Approach to 4-D Imaging of CO2 Flood Yields Breakthrough DOE-Funded Kansas Research to Bolster Economics of Marginal EOR Projects TULSA, OK - - U.S. Department of Energy-funded research has yielded a breakthrough in high-resolution subsurface imaging with the first low-cost depiction of CO2 movement through a thin, shallow oil reservoir. The University of Kansas Center for Research project combines the time-lapse approach of 4-D seismic, which is essentially a series of three-dimensional images recorded over time, with a carefully selected application of the higher-resolution imaging of other advanced seismic technologies. The first-of-its-kind project is being implemented for a landmark CO2 flood pilot project underway in the Hall-Gurney oilfield, near Russell, Kan. That pilot-itself the first CO2 flood in Kansas-also is funded by DOE. Both projects are managed by the Office of Fossil Energy's National Energy Technology Laboratory as part of its Enhanced Oil Recovery (EOR) program.

396

Methods for forming long subsurface heaters  

DOE Patents [OSTI]

A method for forming a longitudinal subsurface heater includes longitudinally welding an electrically conductive sheath of an insulated conductor heater along at least one longitudinal strip of metal. The longitudinal strip is formed into a tubular around the insulated conductor heater with the insulated conductor heater welded along the inside surface of the tubular.

Kim, Dong Sub

2013-09-17T23:59:59.000Z

397

Carbon Tetrachloride Flow and Transport in the Subsurface of...  

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

Carbon Tetrachloride Flow and Transport in the Subsurface of the 216-Z-9 Trench at the Hanford Site. Carbon Tetrachloride Flow and Transport in the Subsurface of the 216-Z-9 Trench...

398

NREL GIS Data: Hawaii High Resolution Concentrating Solar Power | OpenEI  

Open Energy Info (EERE)

Concentrating Solar Power Concentrating Solar Power Dataset Summary Description Abstract - Monthly and annual average solar resource potential for the state of Hawaii. Purpose - Provide information on the solar resource potential for the state of Hawaii. The insolation values represent the average solar energy available to a concentrating collector on a 2-axis tracker, such as a dish or a power tower. Supplemental Info - This data provides monthly average and annual average daily total solar resource averaged over surface cells of 0.1 degrees in both latitude and longitude, or about 10 km in size. This data was developed using the State University of New York/Albany satellite radiation model. This model was developed by Dr. Richard Perez and collaborators at the National Renewable Energy Laboratory and other universities for the U.S. Department of Energy. Specific information about this model can be found in Perez, et al. (2002). This model uses hourly radiance images from geostationary weather satellites, daily snow cover data, and monthly averages of atmospheric water vapor, trace gases, and the amount of aerosols in the atmosphere to calculate the hourly total insolation (sun and sky) falling on a horizontal surface. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. A modified Bird model is used to calculate clear sky direct normal (DNI). This is then adjusted as a function of the ratio of clear sky global horizontal (GHI) and the model predicted GHI. Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalable at a 10km resolution. As a result, it is believed that the modeled values are accurate to approximately 15% of a true measured value within the grid cell. Due to terrain effects and other microclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

399

Advanced 3D Geophysical Imaging Technologies for Geothermal Resource Characterization  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. This project aims to develop improved geophysical imaging method for characterizing subsurface structure, identify fluid locations, and characterize fractures.

400

Time-Resolved Molecular Characterization of Limonene/Ozone Aerosol using High-Resolution Electrospray Ionization Mass Spectrometry  

SciTech Connect (OSTI)

Molecular composition of limonene/O3 secondary organic aerosol (SOA) was investigated using high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) as a function of reaction time. SOA was generated by ozonation of D-limonene in a reaction chamber and sampled at different time intervals using a cascade impactor. The SOA samples were extracted into acetonitrile and analyzed using a HR-ESI-MS instrument with a resolving power of 100,000 (m/?m). The resulting mass spectra provided detailed information about the extent of oxidation inferred from the O:C ratios, double bond equivalency (DBE) factors, and aromaticity indexes (AI) in hundreds of identified individual SOA species.

Bateman, Adam P.; Nizkorodov, Serguei; Laskin, Julia; Laskin, Alexander

2009-09-09T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Near-optimum procedure for half-life measurement by high-resolution gamma-ray spectrometry  

SciTech Connect (OSTI)

A near-optimum procedure for using high-resolution /gamma/-ray spectrometry to measure the half-lives of appropriate /gamma/-ray- emitting-nuclides is presented. Among the important points of the procedure are the employment of the reference source method for implicit correction of pileup and deadtime losses; the use of full-energy peak-area ratios as the fundamental measured quantities; and continuous, high-rate data acquisition to obtain good results in a fraction of a half-life if desired. Equations are given for estimating the precision of the computed half-lives in terms of total measurement time, number of spectral acquisitions, and the precision of peak-area ratios. Results of /sup 169/Yb half-life measurements are given as an example of the procedure's application. 3 refs., 2 tabs.

Parker, J.L.

1989-01-01T23:59:59.000Z

402

High speed optical coherence microscopy with autofocus adjustment and a miniaturized endoscopic imaging probe  

E-Print Network [OSTI]

Optical coherence microscopy (OCM) is a promising technique for high resolution cellular imaging in human tissues. An OCM system for high-speed en face cellular resolution imaging was developed at 1060 nm wavelength at ...

Aguirre, Aaron Dominic

403

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

E-Print Network [OSTI]

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

Augustinack, Jean C.

404

High-resolution emissions of CO{sub 2} from power generation in the USA - article no. G04008  

SciTech Connect (OSTI)

Electricity generation accounts for close to 40% of the U.S. CO{sub 2} emissions from fossil fuel burning, making it the economic sector with the largest source of CO{sub 2}. Since the late 1990s, the Environmental Protection Agency Clean Air Markets Division (EPA CAMD) has kept a repository of hourly CO{sub 2} emission data for most power plants in the conterminous United States. In this study, the CAMD CO{sub 2} data are used to derive a high spatiotemporal resolution CO{sub 2} emissions inventory for the electricity generation sector (inventory available on request). Data from 1998 to 2006 have been processed. This unique inventory can be used to improve the understanding of the carbon cycle at fine temporal and spatial scales. The CAMD data set provides the first quantitative estimates of the diurnal and seasonal cycles of the emissions as well as the year to year variability. Emissions peak in the summertime owing to the widespread use of air conditioning. Summertime emissions are in fact highly correlated with the daily average temperature. In conjunction with the EPA Emissions and Generation Resource Integrated Database (eGRID), we have derived high-resolution maps of CO{sub 2} emissions by fossil fuel burned (coal, gas, oil) for the year 2004. The CAMD data set also reflects regional anomalies in power generation such as the August 2003 blackout in the northeastern United States and the 2000-2001 increase in production in California. We recommend that all sectors of the economy report similar high-resolution CO{sub 2} emissions because of their great usefulness both for carbon cycle science and for greenhouse gases emissions mitigation and regulation.

Petron, G.; Tans, P.; Frost, G.; Chao, D.L.; Trainer, M. [NOAA, Boulder, CO (United States). Earth Systems Research Laboratory

2008-10-15T23:59:59.000Z

405

ON THE IMPACT OF SUPER RESOLUTION WSR-88D DOPPLER RADAR DATA ASSIMILATION ON HIGH RESOLUTION NUMERICAL MODEL FORECASTS  

SciTech Connect (OSTI)

Assimilation of radar velocity and precipitation fields into high-resolution model simulations can improve precipitation forecasts with decreased 'spin-up' time and improve short-term simulation of boundary layer winds (Benjamin, 2004 & 2007; Xiao, 2008) which is critical to improving plume transport forecasts. Accurate description of wind and turbulence fields is essential to useful atmospheric transport and dispersion results, and any improvement in the accuracy of these fields will make consequence assessment more valuable during both routine operation as well as potential emergency situations. During 2008, the United States National Weather Service (NWS) radars implemented a significant upgrade which increased the real-time level II data resolution to 8 times their previous 'legacy' resolution, from 1 km range gate and 1.0 degree azimuthal resolution to 'super resolution' 250 m range gate and 0.5 degree azimuthal resolution (Fig 1). These radar observations provide reflectivity, velocity and returned power spectra measurements at a range of up to 300 km (460 km for reflectivity) at a frequency of 4-5 minutes and yield up to 13.5 million point observations per level in super-resolution mode. The migration of National Weather Service (NWS) WSR-88D radars to super resolution is expected to improve warning lead times by detecting small scale features sooner with increased reliability; however, current operational mesoscale model domains utilize grid spacing several times larger than the legacy data resolution, and therefore the added resolution of radar data is not fully exploited. The assimilation of super resolution reflectivity and velocity data into high resolution numerical weather model forecasts where grid spacing is comparable to the radar data resolution is investigated here to determine the impact of the improved data resolution on model predictions.

Chiswell, S

2009-01-11T23:59:59.000Z

406

Use of a Shielded High Resolution Gamma Spectrometry System to Segregate LLW from Contact Handleable ILW Containing Plutonium - 13046  

SciTech Connect (OSTI)

Dounreay Site Restoration Limited (DSRL) have a number of drums of solid waste that may contain Plutonium Contaminated Material. These are currently categorised as Contact Handleable Intermediate Level Waste (CHILW). A significant fraction of these drums potentially contain waste that is in the Low Level Waste (LLW) category. A Canberra Q2 shielded high resolution gamma spectrometry system is being used to quantify the total activity of drums that are potentially in the LLW category in order to segregate those that do contain LLW from CHILW drums and thus to minimise the total volume of waste in the higher category. Am-241 is being used as an indicator of the presence of plutonium in the waste from its strong 59.54 keV gamma-ray; a knowledge of the different waste streams from which the material originates allows a pessimistic waste 'fingerprint' to be used in order to determine an upper limit to the activities of the weak and non-gamma-emitting plutonium and associated radionuclides. This paper describes the main features of the high resolution gamma spectrometry system being used by DSRL to perform the segregation of CHILW and LLW and how it was configured and calibrated using the Canberra In-Situ Object Counting System (ISOCS). It also describes how potential LLW drums are selected for assay and how the system uses the existing waste stream fingerprint information to determine a reliable upper limit for the total activity present in each measured drum. Results from the initial on-site commissioning trials and the first measurements of waste drums using the new monitor are presented. (authors)

Lester, Rosemary; Wilkins, Colin [Canberra UK Ltd, Unit 1 B528.1, Harwell Science Campus, Oxfordshire OX11 0DF (United Kingdom)] [Canberra UK Ltd, Unit 1 B528.1, Harwell Science Campus, Oxfordshire OX11 0DF (United Kingdom); Chard, Patrick [Canberra UK Ltd, Forss Business and Technology park, Thurso, Caithness KW14 7UZ (United Kingdom)] [Canberra UK Ltd, Forss Business and Technology park, Thurso, Caithness KW14 7UZ (United Kingdom); Jaederstroem, Henrik; LeBlanc, Paul; Mowry, Rick [Canberra Industries, Inc., 800 Research Parkway, Meriden, Connecticut, 06450 (United States)] [Canberra Industries, Inc., 800 Research Parkway, Meriden, Connecticut, 06450 (United States); MacDonald, Sanders; Gunn, William [Dounreay Site Restoration Limited, Dounreay, Thurso, Caithness, KW14 7TZ (United Kingdom)] [Dounreay Site Restoration Limited, Dounreay, Thurso, Caithness, KW14 7TZ (United Kingdom)

2013-07-01T23:59:59.000Z

407

Design, assembly, and testing of a high-resolution relay lens used for holography with operation at both doubled and tripled Nd:YAG laser wavelengths  

SciTech Connect (OSTI)

The design and assembly of a nine-element lens that achieves >2000 1p/mm resolution at a 355-nm wavelength (ultraviolet) has been completed. By adding a doublet to this lens system, operation at a 532-nm wavelength (green) with > 1100 1p/mm resolution is achieved. This lens is used with high-power laser light to record holograms of fast-moving ejecta particles from a shocked metal surface located inside a test package. Part of the lens and the entire test package are under vacuum with a 1-cm air gap separation. Holograms have been recorded with both doubled and tripled Nd:YAG laser light. The UV operation is very sensitive to the package window's tilt. If this window is tilted by more than 0.1 degrees, the green operation performs with better resolution than that of the UV operation. The setup and alignment are performed with green light, but the dynamic recording can be done with either UV light or green light. A resolution plate can be temporarily placed inside the test package so that a television microscope located beyond the hologram position can archive images of resolution patterns that prove that the calibration wires., interference filter, holographic plate, and relay lenses are in their correct positions. Part of this lens is under vacuum, at the point where the laser illumination passes through a focus. Alignment and tolerancing of this high-resolution lens are presented. Resolution variation across the 12-mm field of view and throughout the 5-mm depth of field is discussed for both wavelengths.

Sorenson, Danny S [Los Alamos National Laboratory; Pazuchanics, Peter D [Los Alamos National Laboratory; Malone, Robert M [NSTEC; Cox, Brian C [NSTEC; Frogget, Brent C [NSTEC; Kaufman, Morris I [NSTEC; Capelle, Gene A [NSTEC/SB; Grover, M [NSTEC/SB; Stevens, Gerald D [NSTEC/SB; Turley, William D [NSTEC/SB

2009-01-01T23:59:59.000Z

408

Radionuclide Sensors for Subsurface Water Monitoring  

SciTech Connect (OSTI)

Contamination of the subsurface by radionuclides is a persistent and vexing problem for the Department of Energy. These radionuclides must be measured in field studies and monitoed in the long term when they cannot be removed. However, no radionuclide sensors existed for groundwater monitoring prior to this team's research under the EMSP program Detection of a and b decays from radionuclides in water is difficult due to their short ranges in condensed media.

Timothy DeVol

2006-06-30T23:59:59.000Z

409

A first global and spatially explicit emergy database of rivers and streams based on high-resolution GIS-maps  

Science Journals Connector (OSTI)

Abstract In emergy evaluation (EME), water is often identified as the main renewable resource input of a natural or human system. Water flows in EME have been generally examined with a global perspective, i.e. without considering topographical and climatic differences at regional or local scales. Hence, spatial differentiation in water flows characterization is essential to improve the quality of EME results. This paper introduces the first global, spatially explicit emergy dataset of freshwater flows, developed following the rationale found in prior \\{EMEs\\} of rivers. The unit emergy value (UEV) of a stream was calculated as the highest value between rain chemical potential emergy and rain geopotential emergy over the stream's catchment area, divided by the stream flow rate. This approach was applied with a high resolution and a global coverage, using Geographic Information System (GIS) software and, notably, world maps of precipitation, evapotranspiration and elevation, to estimate accumulation patterns of rainfall emergy value and flow rates. Preliminary results are compared with available data on river's \\{UEVs\\} retrieved from previous studies and with the actual stream flow of major rivers in the world and in France. While flow rates modeled in the database show important differences as compared to actual data, the comparison of the modeled emergy value of rivers with prior studies was made difficult by the heterogeneity in calculation details observed previously. Therefore, it is highly recommended for the emergy community to foster the use and improvement of such high-resolution, spatially explicit dataset instead of using regional or global UEV averages, which should only be used when reliable local values are not available. Hence, territorial averages were computed in order to characterize background processes in the hybrid lifecycle-emergy accounting framework, as this approach can complement and enrich the conventional EME with the inclusion of detailed information on supply chain processes. To this aim, data were aggregated over major watersheds and administrative regions, and weighted with a proxy for urban surface water consumption. The next steps identified to enhance our prospective work include: (1) the characterization of water reservoirs (glaciers, lakes, groundwater, soil moisture), (2) the improvement of runoff modeling and stream flows, (3) the spatial assessment of atmospheric processes to refine transformities of rain (chemical potential and geopotential), and (4) the inclusion of additional elements such as sediments, minerals and particulate matter as a flow of emergy in rivers.

Damien Arbault; Benedetto Rugani; Ligia Tiruta-Barna; Enrico Benetto

2014-01-01T23:59:59.000Z

410

High-resolution NMR study of a synthetic DNA-RNA hybrid dodecamer containing the consensus Pribnow promoter sequence  

SciTech Connect (OSTI)

The nonsymmetrical double-helical hybrid dodecamer d(CGTTATAATGCG){center dot}r(CGCAUUAUAACG) was synthesized with solid-phase phosphoramidite methods and studied by high-resolution 2D-NMR. The imino protons were assigned by one-dimensional nuclear Overhauser methods. All the base protons and H1', H2', H2'', H3', and H4' sugar protons of the DNA strand and the base protons, H1', H2', and most of the H3'-H4' protons of the RNA strand were assigned by 2D NMR techniques. The well-resolved spectra allowed a qualitative analysis of relative proton-proton distances in both strands of the dodecamer. The chemical shifts of the hybrid duplex were compared to those of the pure DNA double helix with the same sequence. The intrastrand and cross-strand NOEs from adenine H2 to H1' resonances of neighboring base pairs exhibited characteristic patterns that were very useful for checking the spectral assignments, and their highly nonsymmetric nature reveals that the conformations of the two strands are quite different. Detailed analysis of the NOESY and COSY spectra, as well as the chemical shift data, indicate that the RNA strand assumes a normal A-type conformation (C3'-endo) whereas the DNA strand is in the general S domain but not exactly in the normal C2'-endo conformation.

Chou, S.H.; Flynn, P.; Reid, B. (Univ. of Washington, Seattle (USA))

1989-03-21T23:59:59.000Z

411

Chemical Characterization of Crude Petroleum Using Nanospray Desorption Electrospray Ionization Coupled with High-Resolution Mass Spectrometry  

SciTech Connect (OSTI)

Nanospray desorption electrospray ionization (nano-DESI) combined with high-resolution mass spectrometry was used for the first time for the analysis of liquid petroleum crude oil samples. The analysis was performed in both positive and negative ionization modes using three solvents one of which (acetonitrile/toluene mixture) is commonly used in petroleomics studies while two other polar solvents (acetonitrile/water and methanol/water mixtures) are generally not compatible with petroleum characterization using mass spectrometry. The results demonstrate that nano-DESI analysis efficiently ionizes petroleum constituents soluble in a particular solvent. When acetonitrile/toluene is used as a solvent, nano-DESI generates electrospray-like spectra. In contrast, strikingly different spectra were obtained using acetonitrile/water and methanol/water. Comparison with the literature data indicates that these solvents selectively extract water-soluble constituents of the crude oil. Water-soluble compounds are predominantly observed as sodium adducts in nano-DESI spectra indicating that addition of sodium to the solvent may be a viable approach for efficient ionization of water-soluble crude oil constituents. Nano-DESI enables rapid screening of different classes of compounds in crude oil samples using solvents that are rarely used for petroleum characterization.

Eckert, Peter A.; Roach, Patrick J.; Laskin, Alexander; Laskin, Julia

2012-02-07T23:59:59.000Z

412

Performance of a high-resolution, synchrotron-based, small-angle x-ray scattering instrument  

SciTech Connect (OSTI)

We describe the construction and performance of a small-angle x-ray scattering (SAXS) instrument which we have used on several beam lines at the National Synchrotron Light Source. The analyzer crystal was a channel cut Si(1,1,1) designed for use at {lambda}=1.54 A with a measured efficiency of 60{percent} and an angular resolution full width at half maximum of 0.001{degree}. In the case of strongly scattering samples (i.e., powders), momentum transfer {ital q} between 1{times}10{sup {minus}4} A{lt}{ital q}{lt}0.1 A{sup {minus}1} could be studied with over eight decades of dynamic intensity range. We demonstrate the versatility of this instrument by performing scattering experiments on a variety of spherical latex samples spanning the size range from 50 to 800 nm, liquid crystal samples with sharp, asymmetrical Bragg peaks, and metal clusters with sizes less than 10 nm. Small-angle x-ray scattering data for the larger polystyrene samples is compared with light scattering data and theoretical structure factors, and the relative roles of instrument smearing, sample polydispersity, and interparticle interference are elucidated. In the case of the liquid crystal samples, the high resolution of the instrument allows structural features to be observed that were previously obscured by the instrumental resolution in other small-angle neutron and synchroton-based Kratky camera data taken on the same samples. {copyright} {ital 1996 American Institute of Physics.}

Wilcoxon, J.P.; Craft, S.A. [Nanostructured Materials Division, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)] [Nanostructured Materials Division, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Thurston, T.R. [Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)] [Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

1996-09-01T23:59:59.000Z

413

Land Processes in a High Resolution Community Climate Model with Sub-Grid Scale Parameterizations Final Report  

SciTech Connect (OSTI)

The characteristics of land important for climate are very heterogeneous, as are the key atmospheric inputs to land, i.e. precipitation and radiation. To adequately represent this heterogeneity, state-of-the-art climate models should represent atmospheric inputs to land, land properties, and the dynamical changes of land at the highest resolution accessible by climate models. The research funded under this project focused on the development of an alternative approach to this problem in which a sub-mesh is imposed on each atmospheric model grid square. This allows representation of the land climate dynamics at a higher resolution than that achievable in the global atmospheric models. The high spatial detail of the fine-mesh treatment provides not only a more accurate representation of land processes to the atmospheric model, but also the opportunity for direct downscaling of the surface climate. The proposed project continued the development and refinement of a high-resolution land surface model that is compatible for inclusion into the National Center for Atmospheric Research (NCAR) Community Climate Model (CCM), a state-of-the-art atmospheric general circulation model (GCM) that is used for climate simulation and prediction.

R. E. Dickinson; Andrea N. Hahmann

2002-07-17T23:59:59.000Z

414

Experiments with the High Resolution Kaon Spectrometer at Jlab Hall C and the New Spectroscopy of ^12_Lambda B Hypernuclei  

SciTech Connect (OSTI)

Since the pioneering experiment, E89-009 studying hypernuclear spectroscopy using the $(e,e^{\\prime}K^+)$ reaction was completed, two additional experiments, E01-011 and E05-115, were performed at Jefferson Lab. These later experiments used a modified experimental design, the "Tilt Method", to dramatically suppress the large electromagnetic background, and allowed for a substantial increase in luminosity. Additionally, a new kaon spectrometer, HKS (E01-011), a new electron spectrometer, HES, and a new splitting magnet were added to produce precision, high-resolution hypernuclear spectroscopy. These two experiments, E01-011 and E05-115, resulted in two new data sets, producing sub-MeV energy resolution in the spectra of ${}^{7}_{\\Lambda}\\text{He}$, ${}^{12}_{\\Lambda}\\text{B}$ and ${}^{28}_{\\Lambda} \\text{Al}$ and ${}^{7}_{\\Lambda}\\text{He}$, ${}^{10}_{\\Lambda}\\text{Be}$, ${}^{12}_{\\Lambda}\\text{B}$ and ${}^{52}_{\\Lambda}\\text{V}$. All three experiments obtained a ${}^{12}_{\\Lambda}\\text{B}$, spectrum, which is the most characteristic $p$-shell hypernucleus and is commonly used for calibration. Independent analyses of these different experiments demonstrate excellent consistency and provide the clearest level structure to date of this hypernucleus as produced by the $(e,e^{\\prime}K^+)$ reaction. This paper presents details of these experiments, and the extraction and analysis of the observed ${}^{12}_{\\Lambda}\\text{B}$ spectrum.

Tang, Liguang; Chen, Chunhua; Gogami, Toshiyuki; Kawama, Daisuke; Han, Yuncheng; Yuan, Lulin; Matsumura, Akihiko; Okayasu, Yuichi; Seva, Tomislav; Rodriguez, Victor; Baturin, Pavlo; Acha Quimper, Armando; Achenbach, Carsten; Ahmidouch, Abdellah; Albayrak, Ibrahim; Androic, Darko; Asaturyan, Arshak; Asaturyan, Razmik; Ates, Ozgur; Badui, Rafael; Baker, Oliver; Benmokhtar, Fatiha; Boeglin, Werner; Bono, Jason; Bosted, Peter; Brash, Edward; Carter, Philip; Carlini, Roger; Chiba, Atsushi; Christy, Michael; Cole, Leon; Dalton, Mark; Danagoulian, Samuel; Daniel, Aji; De Leo, Raffaele; Dharmawardane, Kahanawita; Doi, Daisuke; Egiyan, Kim; Elaasar, Mostafa; Ent, Rolf; Fenker, Howard; Fujii, Yu; Furic, Miroslav; Gabrielyan, Marianna; Gan, Liping; Garibaldi, Franco; Gaskell, David; Gasparian, Ashot; Gibson, Edward; Gueye, Paul; Hashimoto, Osamu; Honda, D.; Horn, Tanja; Hu, Bitao; Hungerford, Ed; Jayalath, Chandana; Jones, Mark; Johnston, Kathleen; Kalantarians, Narbe; Kanda, Hiroki; Kaneta, M.; Kato, F.; Kato, Seigo; Kawai, Masaharu; Keppel, Cynthia; Khanal, Hari; Kohl, M.; Kramer, Laird; Lan, Kejian; Li, Ya; Habarakada Liyanage, Anusha; Luo, Wei; Mack, David; Maeda, Kazushige; Malace, Simona; Margaryan, Amur; Marikyan, Gagik; Markowitz, Pete; Maruta, Tomofumi; Maruyama, Nayuta; Maxwell, Victor; Millener, David; Miyoshi, Toshinobu; Mkrtchyan, Arthur; Mkrtchyan, Hamlet; Motoba, Toshio; Nagao, Sho; Nakamura, Satoshi; Narayan, Amrendra; Neville, Casey; Niculescu, Gabriel; Niculescu, Maria; Nunez, Angel; Nuruzzaman, nfn; Nomura, Hiroshi; Nonaka, Kenichi; Ohtani, Atsushi; Oyamada, Masamichi; Perez, Naipy; Petkovic, Tomislav; Pochodzalla, J.; Qiu, Xiyu; Randeniya, Kapugodage; Raue, Brian; Reinhold, Joerg; Rivera, R.; Roche, Julie; Samanta, Chhanda; Sato, Yoshinori; Sawatzky, Bradley; Segbefia, Edwin; Schott, Diane; Shichijo, Ayako; Simicevic, Neven; Smith, Gregory; Song, Yushou; Sumihama, Mizuki; Tadevosyan, Vardan; Takahashi, Toshiyuki; Taniya, Naotaka; Tsukada, Kyo; Tvaskis, Vladas; Veilleux, Micah; Vulcan, William; Wells, Steven; Wesselmann, Frank; Wood, Stephen; Yamamoto, Taku; Yan, Chen; Ye, Z.; Yokota, Kosuke; Zhamkochyan, Simon; Zhu, Lingyan

2014-09-01T23:59:59.000Z

415

A high-resolution and multi-year emissions inventory for biomass burning in Southeast Asia during 2001–2010  

Science Journals Connector (OSTI)

Abstract Biomass burning (BB) emissions from forest fires, agricultural waste burning, and peatland combustion contain large amounts of greenhouse gases (e.g., CO2, CH4, and N2O), which significantly impact ecosystem productivity, global atmospheric chemistry, and climate change. With the help of recently released satellite products, biomass density based on satellite and observation data, and spatiotemporal variable combustion factors, this study developed a new high-resolution and multi-year emissions inventory for BB in Southeast Asia (SEA) during 2001–2010. The 1-km grid was effective for quantifying emissions from small-sized fires that were frequently misinterpreted by coarse grid data due to their large smoothed pixels. The average annual BB emissions in SEA during 2001–2010 were 277 Gg SO2, 1125 Gg NOx, 55,388 Gg CO, 3831 Gg NMVOC, 553 Gg NH3, 324 Gg BC, 2406 Gg OC, 3832 Gg CH4, 817,809 Gg CO2, and 99 Gg N2O. Emissions were high in western Myanmar, Northern Thailand, eastern Cambodia, northern Laos, and South Sumatra and South Kalimantan of Indonesia. Emissions from forest burning were the dominant contributor to the total emissions among all land types. The spatial pattern of BB emissions was consistent with that of the burned areas. In addition, BB emissions exhibited similar temporal trends from 2001 to 2010, with strong interannual and intraannual variability. Interannual and intraannual emission peaks were seen during 2004, 2007, 2010, and January–March and August–October, respectively.

Yusheng Shi; Yasushi Yamaguchi

2014-01-01T23:59:59.000Z

416

An attempt to study LiH and Li{sub 2} molecules by high resolution pulsed laser spectroscopy  

SciTech Connect (OSTI)

As we start a program to study alkali hydrides and dimers, we have developed a two-step photoionisation experiment on Li{sub 2} molecules based on the use of an atomic beam and two pulsed dye lasers. The first resonant step which excites the A {sup 1}{sigma}{sub u}{sup +}-X {sup 1}{sigma}{sub g}{sup +}Li{sub 2} dimer systems is a home-made cw-seeded DCM dye laser with a laser linewidth of 55 MHz (FWHM) and near the Fourier transform limit. The second step is a larger width fixed frequency UV laser which allows the photoionisation of the selectively excited molecules. The three {sup 6}Li{sub 2}, {sup 6}Li {sup 7}Li and {sup 7}Li{sub 2} spectra are recorded simultaneously by the use of a doubly-accelerating time-of-flight ion analyser. Comparison between recorded and calculated absorption spectra using Dunham parameters found in the literature is satisfactory. To develop similar pulsed high-resolution investigations in LiH, we have characterized our molecular beam by using the laser induced fluorescence (LIF) technique with a cw blue dye laser. Two Franck-Condon LiH Doppler-free resonances have been observed.

Bouloufa, Nadia; Cabaret, Louis; Cacciani, Patrice; Camus, Pierre; Pitcheev, Boris; Vetter, Raymond [Laboratoire Aime Cotton, CNRS II, Bat 505, Campus d'Orsay, 91405 Orsay Cedex (France)

1998-12-16T23:59:59.000Z

417

The SEGUE Stellar Parameter Pipeline. III. Comparison with High-Resolution Spectroscopy of SDSS/SEGUE Field Stars  

E-Print Network [OSTI]

We report high-resolution spectroscopy of 125 field stars previously observed as part of the Sloan Digital Sky Survey and its program for Galactic studies, the Sloan Extension for Galactic Understanding and Exploration (SEGUE). These spectra are used to measure radial velocities and to derive atmospheric parameters, which we compare with those reported by the SEGUE Stellar Parameter Pipeline (SSPP). The SSPP obtains estimates of these quantities based on SDSS ugriz photometry and low-resolution (R = 2000) spectroscopy. For F- and G-type stars observed with high signal-to-noise ratios (S/N), we empirically determine the typical random uncertainties in the radial velocities, effective temperatures, surface gravities, and metallicities delivered by the SSPP to be 2.4 km/s, 130 K (2.2%), 0.21 dex, and 0.11 dex, respectively, with systematic uncertainties of a similar magnitude in the effective temperatures and metallicities. We estimate random errors for lower S/N spectra based on numerical simulations.

C. Allende Prieto; T. Sivarani; T. C. Beers; Y. S. Lee; L. Koesterke; M. Shetrone; C. Sneden; D. L. Lambert; R. Wilhelm; C. M. Rockosi; D. Lai; B. Yanny; I. I. Ivans; J. A. Johnson; W. Aoki; C. A. L. Bailer-Jones; P. Re Fiorentin

2007-10-31T23:59:59.000Z

418

Average Conformations Determined from PRE Data Provide High-Resolution Maps of Transient Tertiary Interactions in Disordered Proteins  

Science Journals Connector (OSTI)

In the last decade it has become evident that disordered states of proteins play important physiological and pathological roles and that the transient tertiary interactions often present in these systems can play a role in their biological activity. The structural characterization of such states has so far largely relied on ensemble representations, which in principle account for both their local and global structural features. However, these approaches are inherently of low resolution due to the large number of degrees of freedom of conformational ensembles and to the sparse nature of the experimental data used to determine them. Here, we overcome these limitations by showing that tertiary interactions in disordered states can be mapped at high resolution by fitting paramagnetic relaxation enhancement data to a small number of conformations, which can be as low as one. This result opens up the possibility of determining the topology of cooperatively collapsed and hidden folded states when these are present in the vast conformational landscape accessible to disordered states of proteins. As a first application, we study the long-range tertiary interactions of acid-unfolded apomyoglobin from experimentally measured paramagnetic relaxation enhancement data.

Jordi Silvestre-Ryan; Carlos W. Bertoncini; Robert Bryn Fenwick; Santiago Esteban-Martin; Xavier Salvatella

2013-01-01T23:59:59.000Z

419

Investigation of model parameters for high-resolution wind energy forecasting: Case studies over simple and complex terrain  

Science Journals Connector (OSTI)

Abstract Wind power forecasting, turbine micrositing, and turbine design require high-resolution simulations of atmospheric flow. Case studies at two West Coast North American wind farms, one with simple and one with complex terrain, are explored using the Weather Research and Forecasting (WRF) model. Both synoptically and locally driven events that include some ramping are considered. The performance of the model with different grid nesting configurations, turbulence closures, and grid resolutions is investigated through comparisons with observation data. For the simple terrain site, no significant improvement in the simulation results is found when using higher resolution. In contrast, for the complex terrain site, there is significant improvement when using higher resolution, but only during the locally driven event. This suggests the possibility that computational resources could be spared under certain conditions, for example when the topography is adequately resolved at coarser resolutions. Physical parameters such as soil moisture have a very large effect, but mostly for the locally forced events for both simple and complex terrain. The effect of the PBL scheme choice varies significantly depending on the meteorological forcing and terrain. On average, prognostic TKE equation schemes perform better than non-local eddy viscosity schemes.

Nikola Marjanovic; Sonia Wharton; Fotini K. Chow

2014-01-01T23:59:59.000Z

420

Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities  

DOE Patents [OSTI]

A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. 20 figs.

McEwan, T.E.

1998-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" from the National Library of EnergyBeta (NLEBeta).
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421

Probable hydrologic effects of subsurface mining  

SciTech Connect (OSTI)

This case history provides information on the ground-water system and presents the results of an analysis of present and future hydrologic effects of coal mining in the Appalachian coal basin. Although emphasis is on the probable hydrologic effects due to subsurface mining, examples and discussions are equally applicable to surface mine problems. The case history is based on an ongoing study in Greene County which will be completed in 1983. Cooperators in this project were the Pennsylvania Geologic and Topographic Survey and the Greene County Commissioners. The study stemmed from local interest in the rural water supply of the county which is predominantly groundwater.

Stoner, J.D.

1983-01-01T23:59:59.000Z

422

Parallel heater system for subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation is disclosed. The system includes a plurality of substantially horizontally oriented or inclined heater sections located in a hydrocarbon containing layer in the formation. At least a portion of two of the heater sections are substantially parallel to each other. The ends of at least two of the heater sections in the layer are electrically coupled to a substantially horizontal, or inclined, electrical conductor oriented substantially perpendicular to the ends of the at least two heater sections.

Harris, Christopher Kelvin (Houston, TX); Karanikas, John Michael (Houston, TX); Nguyen, Scott Vinh (Houston, TX)

2011-10-25T23:59:59.000Z

423

Low temperature monitoring system for subsurface barriers  

DOE Patents [OSTI]

A system for monitoring temperature of a subsurface low temperature zone is described. The system includes a plurality of freeze wells configured to form the low temperature zone, one or more lasers, and a fiber optic cable coupled to at least one laser. A portion of the fiber optic cable is positioned in at least one freeze well. At least one laser is configured to transmit light pulses into a first end of the fiber optic cable. An analyzer is coupled to the fiber optic cable. The analyzer is configured to receive return signals from the light pulses.

Vinegar, Harold J. (Bellaire, TX); McKinzie, II. Billy John (Houston, TX)

2009-08-18T23:59:59.000Z

424

Grand Challenges: Request for Information on the Subsurface ...  

Office of Environmental Management (EM)

resources while mitigating impacts of their use constitute major technical and socio-political challenges and opportunities. Next generation advances in subsurface technologies...

425

Characterization of subsurface fracture patterns in the Coso...  

Open Energy Info (EERE)

LibraryAdd to library Conference Proceedings: Characterization of subsurface fracture patterns in the Coso geothermal reservoir by analyzing shear-wave splitting of...

426

Evaluation of subsurface fracture geometry using fluid pressure...  

Open Energy Info (EERE)

subsurface fracture geometry using fluid pressure response to solid earth tidal strain Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Evaluation of...

427

Attenuation-Based Remedies in the Subsurface Applied Field Research...  

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

setting for researchers in both applied and basic science fields. A wealth of subsurface data is available to support research activities and remedial decision making. Led by the...

428

Assimilation of high-resolution tropical cyclone observations with an Ensemble Kalman Filter Using HEDAS: Evaluation of 2008-2011 HWRF forecasts  

Science Journals Connector (OSTI)

NOAA has been gathering high-resolution flight-level, dropwindsonde and airborne Doppler radar data in tropical cyclones for almost three decades; the U.S. Air Force routinely obtained the same type and quality of data, excepting Doppler radar, ...

Sim D. Aberson; Altu? Aksoy; Kathryn J. Sellwood; Tomislava Vukicevic; Xuejin Zhang

429

Profile of Professor of High-Resolution Electron Microscopy for Nanomaterials in the Quantum Nanoscience department (Kavli Institute, faculty of Applied Sciences)  

E-Print Network [OSTI]

Nanoscience department (Kavli Institute, faculty of Applied Sciences) Workload and duration The Quantum Nanoscience department is planning to appoint a permanent full-time professor in the research area of High the High-Resolution Electron Microscopy (HREM) group in the Quantum Nanoscience department at TU Delft

430

Quantification of Fuel Oxygenate Ethers in Human Blood using Solid-Phase Microextraction Coupled with Gas Chromatography-High-Resolution Mass Spectrometry  

Science Journals Connector (OSTI)

......Because ofwater solubility, fuel oxygenate...toluene. When water supplies are contaminated...followed by gas chromatography-high-resolution...helium-sparged distilled water (26) to produce...blanks,and water standardsfor daily...column carrier gas for all analyses...using liquid nitrogen from Air Liq......

Lalith K. Silva; Clayton R. Wilburn; Michael A. Bonin; Mitchell M. Smith; Katherine A. Reese; David L. Ashley; Benjamin C. Blount

2008-05-01T23:59:59.000Z

431

40 K, high-resolution measurements with an energy resolution of several meVare required. The larger value of a (0.460.48) strongly  

E-Print Network [OSTI]

40 K, high-resolution measurements with an energy resolution of several meVare required. The larger role in SWNTs. A Methods Sample preparation In photoemission measurements, a relatively large sampling of the SWNTs were several micrometres. The purity of the SWNTsamples was estimated by electron-energy

Niu, Fenglin

432

High resolution cortical thickness measurement from clinical CT data G.M. Treece, A.H. Gee, P.M. Mayhew and K.E.S. Poole  

E-Print Network [OSTI]

) methods of assessing hip structure, most notably with multi-detector computed tomography, MDCT (Bouxsein and technically limited by thresholding errors caused by relatively low resolution data sets. Ideally, we wouldHigh resolution cortical thickness measurement from clinical CT data G.M. Treece, A.H. Gee, P

Drummond, Tom

433

Coronal Evolution of the Sun in Time: High-Resolution X-Ray Spectroscopy of Solar Analogs with Different Ages  

E-Print Network [OSTI]

(abridged) We investigate the long-term evolution of X-ray coronae of solar analogs based on high-resolution X-ray spectroscopy and photometry with XMM-Newton. Six nearby main-sequence G stars with ages between ~0.1 Gyr and \\~1.6 Gyr and rotation periods between ~1d and 12.4d have been observed. We derive coronal element abundances and the coronal emission measure distribution (EMD). The abundances change from an inverse-First Ionization Potential (FIP) distribution in stars with ages around 0.1 Gyr to a solar-type FIP distribution in stars at ages of 0.3 Gyr and beyond. The coronal EMDs show shapes characterized by power-laws on each side of the EMD peak. The latter shifts from temperatures of about 10 MK in the most rapidly rotating, young stars to temperatures around 4 MK in the oldest target considered here. The power-law index on the cooler side of the EMD exceeds expected slopes for static loops, with typical values being 1.5-3. We interpret this slope with a model in which the coronal emission is due to a superposition of stochastically occurring flares, with an occurrence rate that is distributed in radiated energy E as a power-law, dN/dE ~ E^-a. Our EMDs indicate a ~ 2.2-2.8, in excellent agreement with values previously derived from light curves of magnetically active stars. We derive the range of flare energies required to explain the light-curve modulation. In an overall scenario, we propose that flaring activity plays a larger role in more active stars. In this model, the higher flare rate is responsible both for the higher average coronal temperature and the high coronal X-ray luminosity, two parameters that are indeed found to be correlated.

A. Telleschi; M. Guedel; K. Briggs; M. Audard; J. -U. Ness; S. L. Skinner

2005-03-24T23:59:59.000Z

434

Repository Subsurface Preliminary Fire Hazard Analysis  

SciTech Connect (OSTI)

This fire hazard analysis identifies preliminary design and operations features, fire, and explosion hazards, and provides a reasonable basis to establish the design requirements of fire protection systems during development and emplacement phases of the subsurface repository. This document follows the Technical Work Plan (TWP) (CRWMS M&O 2001c) which was prepared in accordance with AP-2.21Q, ''Quality Determinations and Planning for Scientific, Engineering, and Regulatory Compliance Activities''; Attachment 4 of AP-ESH-008, ''Hazards Analysis System''; and AP-3.11Q, ''Technical Reports''. The objective of this report is to establish the requirements that provide for facility nuclear safety and a proper level of personnel safety and property protection from the effects of fire and the adverse effects of fire-extinguishing agents.

Richard C. Logan

2001-07-30T23:59:59.000Z

435

Poster on Subsurface Technology & Engineering Research, Development, and Demonstration Crosscut (SubTER)  

Broader source: Energy.gov [DOE]

A new DOE Subsurface Crosscut, known as SubTER, coalesces energy technologies that use the subsurface for energy production, storage, and waste management.

436

Evolution of a double-front Rayleigh-Taylor system using a GPU-based high resolution thermal Lattice-Boltzmann model  

E-Print Network [OSTI]

We study the turbulent evolution originated from a system subjected to a Rayleigh-Taylor instability with a double density at high resolution in a 2 dimensional geometry using a highly optimized thermal Lattice Boltzmann code for GPUs. The novelty of our investigation stems from the initial condition, given by the superposition of three layers with three different densities, leading to the development of two Rayleigh-Taylor fronts that expand upward and downward and collide in the middle of the cell. By using high resolution numerical data we highlight the effects induced by the collision of the two turbulent fronts in the long time asymptotic regime. We also provide details on the optimized Lattice-Boltzmann code that we have run on a cluster of GPUs

Ripesi, P; Schifano, S F; Tripiccione, R

2014-01-01T23:59:59.000Z

437

User Science Images  

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

User Science Images User Science Images User Science Images Sort by: Default | Name | Date (low-high) | Date (high-low) | Category NIMROD-1.png FES: NIMROD Simulation February 18, 2010 | Author(s): Dr. Charlson C. Kim (University of Washington) | Category: Fusion Energy | URL: https://nimrodteam.org/ Download Image: NIMROD-1.png | png | 1.5 MB Trajectory of an energetic ion in a Field Reverse Configuration (FRC) magnetic field. Magnetic separatrix denoted by green surface. Spheres are colored by azimuthal velocity. Image courtesy of Charlson Kim, University of Washington; NERSC repos m487, mp21, m1552 Scheibe.png BER: Pore-Scale Fluid Flow for Subsurface Reactive Transport January 1, 2008 | Author(s): Timothy D. Scheibe, PNNL | Category: Environmental Science | URL: http://http://subsurface.pnl.gov/

438

Imaging  

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

Imaging Print Imaging Print The wavelengths of soft x-ray photons (1-15 nm) are very well matched to the creation of "nanoscopes" capable of probing the interior structure of biological cells and inorganic mesoscopic systems.Topics addressed by soft x-ray imaging techniques include cell biology, nanomagnetism, environmental science, and polymers. The tunability of synchrotron radiation is absolutely essential for the creation of contrast mechanisms. Cell biology CAT scans are performed in the "water window" (300-500 eV). Nanomagnetism studies require the energy range characteristic of iron, cobalt, and nickel (600-900 eV). Mid- and far-infrared (energies below 1 eV) microprobes using synchrotron radiation are being used to address problems such as chemistry in biological tissues, chemical identification and molecular conformation, environmental biodegradation, mineral phases in geological and astronomical specimens, and electronic properties of novel materials. Infrared synchrotron radiation is focused through, or reflected from, a small spot on the specimen and then analyzed using a spectrometer. Tuning to characteristic vibrational frequencies serves as a sensitive fingerprint for molecular species. Images of the various species are built up by raster scanning the specimen through the small illuminated spot.

439

Laser hazard analysis for LASIRIS Model MAG-501L-670M-1000-45[degree]-K diode laser associated with high resolution pulsed scanner.  

SciTech Connect (OSTI)

A laser hazard analysis and safety assessment was performed for the LASIRISTM Model MAG-501L-670M-1000-45o-K diode laser associated with the High Resolution Pulse Scanner based on the ANSI Standard Z136.1-2000, American National Standard for the Safe Use of Lasers and the ANSI Standard Z136.6-2000, American National Standard for the Safe Use of Lasers Outdoors. The laser was evaluated for both indoor and outdoor use.

Augustoni, Arnold L.

2004-11-01T23:59:59.000Z

440

Imaging Hydraulic Fractures: Source Location Uncertainty Analysis At The UPRC Carthage Test Site  

E-Print Network [OSTI]

Hydraulic fracturing is a useful tool for enhancing gas and oil production. High-resolution seismic imaging of the fracture geometry and fracture growth process is the key in determining optimal spacing and location of ...

Li, Yingping

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Structural Characterization of the 216-Z-9 Crib Prior to Decontamination and Demolition Using Robot Crawler and High Resolution Photography  

SciTech Connect (OSTI)

The Department of Energy, Richland Operations Office is preparing to conduct a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) removal action for the decontamination and demolition of the above-grade mining structures and equipment at the 216-Z-9 Crib. An investigation of the condition of the mining complex was initiated to determine constraints necessary for safely conducting the removal of the buildings. While crib headspace chemical analysis and nondestructive analysis of the interior of the buildings was completed to address radiological contamination concerns, the primary concern regarding the removal of the above-grade structures located on the crib cover involves determining the loading capacity and structural integrity of the crib cover slab. Additional concerns included headspace gases and radionuclide contamination. Until the structural analysis was completed, loading limits on the crib cover had been restricted. Photographic documentation revealed the loss of protective tiles and acid resistant coating from the underside of the cover raising a question of concrete stability. The investigation relied heavily on the use of high resolution photography with high intensity lighting for photographic documentation of the underside of the crib cover, followed by structural analysis of the documentation by a team of qualified engineers. Deployment of a robot crawler with attached camera and positioning of a fixed camera were integral to this structural characterization effort. Results of the photographic documentation were of sufficient quality to allow for bounding decisions to be made regarding the loading of the crib cover while performing the demolition of the mining structures (glovebox, excavator, bucket) and the associated buildings. The 216-Z-9 Crib, also known as the 216 Z-9 Recuplex CAW (CA column waste) Waste Disposal Cavern, the Z-9 Trench and the Z-9 Crib was constructed as an engineered trench with an open area beneath a concrete slab. The crib is located near the Plutonium Finishing Plant (PFP) facility, at the Hanford Nuclear Reservation in Eastern Washington State. The crib was used as a disposal site for effluent chemical and radiological wastes from the recovery of uranium and plutonium through extraction or RECUPLEX process, a method that recovered uranium and plutonium from liquid and solid wastes and scraps from other PFP processes. During its operating life, from 1955 through 1962, the Z-9 Crib received liquid wastes totaling approximately four million liters, or one million gallons. Analyses of the crib soil in seven locations to a depth of up to two meters (six feet) beneath the crib floor indicated that the plutonium content of the crib soil ranged from 50 to 150 kg (the highest concentration measured was 34.5 g/L of soil). While performing the structural evaluation of the crib cover, additional characterization information was obtained on the radiological and chemical conditions of the crib and structures. (authors)

Hopkins, A.; Sutter, C.; Klos, D.B. [Fluor Hanford, Richland, WA (United States); Teal, J.A. [Fluor Government Group, Operations West, Richland WA (United States); Oates, L. [Environmental Quality Management, Richland, WA (United States); Bond, F.W. [Washington State Department of Ecology, Richland, WA (United States); Mattlin, E.; Clarke, S. [U.S. Department of Energy, Richland Operations Office, Richland WA (United States)

2008-07-01T23:59:59.000Z

442

Coronal Evolution of the Sun in Time: High-Resolution X-Ray Spectroscopy of Solar Analogs with Different Ages  

Science Journals Connector (OSTI)

We investigate the long-term evolution of X-ray coronae of solar analogs based on high-resolution X-ray spectroscopy and photometry with XMM-Newton. Six nearby main-sequence G stars with ages between ?0.1 and ?1.6 Gyr and rotation periods between ?1 and 12.4 days have been observed. We use the X-ray spectra to derive coronal element abundances of C, N, O, Ne, Mg, Si, S, and Fe and the coronal emission measure distribution (EMD). We find that the abundances change from an inverse first ionization potential (FIP) distribution in stars with ages around 0.1 Gyr to a solar-type FIP distribution in stars at ages of 0.3 Gyr and beyond. This transformation is coincident with a steep decline of nonthermal radio emission. The results are in qualitative agreement with a simple model in which the stream of electrons in magnetic fields suppresses diffusion of low-FIP ions from the chromosphere into the corona. The coronal emission measure distributions show shapes characterized by power laws on each side of the EMD peak. The latter shifts from temperatures of about 10 MK in the most rapidly rotating, young stars to temperatures around 4 MK in the oldest target considered here. The power-law index on the cooler side of the EMD exceeds expected slopes for static loops, with typical values being 1.5-3. We interpret this slope with a model in which the coronal emission is due to a superposition of stochastically occurring flares, with an occurrence rate that is distributed in radiated energy E as a power law, dN/dE ? E-?, as previously found for solar and stellar flares. We obtain the relevant power-law index ? from the slope of the high-temperature tail of the EMD. Our EMDs indicate ? ? 2.2-2.8, in excellent agreement with values previously derived from light curves of magnetically active stars. Modulation with timescales reminiscent of flares is found in the light curves of all our targets. Several strong flares are also observed. We use our ?-values to simulate light curves and compare them with the observed light curves. We thus derive the range of flare energies required to explain the light-curve modulation. More active stars require a larger range of flare energies than less active stars within the framework of this simplistic model. In an overall scenario, we propose that flaring activity plays a larger role in more active stars. In this model, the higher flare rate is responsible both for the higher average coronal temperature and the high coronal X-ray luminosity, two parameters that are indeed found to be correlated.

Alessandra Telleschi; Manuel Güdel; Kevin Briggs; Marc Audard; Jan-Uwe Ness; Stephen L. Skinner

2005-01-01T23:59:59.000Z

443

Modification of solid state CdZnTe (CZT) radiation detectors with high sensitivity or high resolution operation  

DOE Patents [OSTI]

An apparatus and process is provided to illustrate the manipulation of the internal electric field of CZT using multiple wavelength light illumination on the crystal surface at RT. The control of the internal electric field is shown through the polarization in the IR transmission image under illumination as a result of the Pockels effect.

Washington, II, Aaron L; Duff, Martine C; Teague, Lucile C; Burger, Arnold; Groza, Michael

2014-11-11T23:59:59.000Z

444

A Pilot Study of Low-Cost, High-Resolution Microendoscopy as a Tool for Identifying Women with Cervical Precancer  

Science Journals Connector (OSTI)

...microscope, coupled to a flexible fiber optic imaging probe, 1 mm in diameter (Fig. 2A). Blue light provided by a light-emitting diode (LED) at a wavelength of 455 nm is delivered from the HRME unit, through the fiber optic probe, to the tissue...

Mark C. Pierce; YaoYao Guan; Mary Kate Quinn; Xun Zhang; Wen-Hua Zhang; You-Lin Qiao; Philip Castle; Rebecca Richards-Kortum

2012-11-01T23:59:59.000Z

445

Seismic Survey Report for Central Nevada Test Area, Subsurface, Correction Action Unit 443, Revision 1  

SciTech Connect (OSTI)

The seismic survey was successful in imaging the water table and underlying structures at the site. The configuration of the water table reflector confirms the general southeast horizontal flow direction in the alluvial aquifer. Offsets in the water table reflector, both at known faults that reach the surface and at subsurface faults not previously recognized, indicate that both extension and blast-related faults are barriers to lateral groundwater flow. The results from this study have been used to optimally locate two new wells designed to monitor head levels and possible contaminant migration in the alluvial aquifer at CTNA.

None

2008-12-19T23:59:59.000Z

446

Probing the Excited State Properties of the Highly Phosphorescent Pt(dpyb)Cl Compound by High-Resolution Optical Spectroscopy  

Science Journals Connector (OSTI)

The results provide new insight into strategies for optimizing the performance of platinum-based emitters for applications such as organic light-emitting diode (OLED) technology and imaging. ... (19, 20) Such systems also offer promise as efficient growth lights in horticulture, owing to the close match of the bimodal-like emission profile with the absorption spectra of green plants. ... OLEDs have promise to make a marked impact in full color displays and lighting applications. ...

Andreas F. Rausch; Lisa Murphy; J. A. Gareth Williams; Hartmut Yersin

2009-10-30T23:59:59.000Z

447

EA-1331: Remediation of Subsurface and Groundwater Contamination at the  

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

331: Remediation of Subsurface and Groundwater Contamination at 331: Remediation of Subsurface and Groundwater Contamination at the Rock Springs in situ Oil Shale Retort Site, Sweetwater County, Wyoming EA-1331: Remediation of Subsurface and Groundwater Contamination at the Rock Springs in situ Oil Shale Retort Site, Sweetwater County, Wyoming SUMMARY This EA evaluates the environmental impacts for the proposal for the Rock Springs In-Situ Oil Shale Retort Test Site remediation that would be performed at the Rock Springs site in Sweetwater County, Wyoming. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD July 31, 2000 EA-1331: Finding of No Significant Impact Remediation of Subsurface and Groundwater Contamination at the Rock Springs in situ Oil Shale Retort Site July 31, 2000 EA-1331: Final Environmental Assessment

448

PNNL: Biological Sciences - A Subsurface Science Scientific Focus Area -  

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

Role of Microenvironments and Transition Zones in Subsurface Reactive Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport Subsurface Science Scientific Focus Area (SFA) The Subsurface Science Scientific Focus Area (SFA) is funded by the U.S. Department of Energy's Office of Biological and Environmental Research. The SFA team is performing integrated, multidisciplinary, science-theme-focused research on the role of microenvironments and transition zones in the reactive transport of technetium (Tc), uranium (U), and plutonium (Pu). The primary environmental system being studied is the groundwater-river interaction zone in the 300 area of the Hanford Site in southeastern Washington State. Ringold Sediments Redox boundary in Ringold sediments about 2.5 m below the Hanford-Ringold contact. The boundary is the point where oxygen and other terminal electron

449

Subsurface Electrical Measurements at Dixie Valley, Nevada, Using  

Open Energy Info (EERE)

Subsurface Electrical Measurements at Dixie Valley, Nevada, Using Subsurface Electrical Measurements at Dixie Valley, Nevada, Using Single-Well and Surface-to-Well Induction Logging Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Subsurface Electrical Measurements at Dixie Valley, Nevada, Using Single-Well and Surface-to-Well Induction Logging Abstract Extended logging and surface-to-borehole electromagnetic induction measurements were performed at the Dixie Valley Geothermal Field as part of an ongoing effort to employ electromagnetic induction logging to geothermal reservoir characterization. The principal goal of this effort is to discern subsurface features useful in geothermal production, such as larger scale mapping of geothermal reservoirs and smaller scale mapping of producing

450

2014 JASON Report: State of Stress in Engineered Subsurface Systems  

Broader source: Energy.gov [DOE]

A new report by an independent panel recommends that the Energy Department take a leading role in understanding subsurface systems to better address the nation’s energy and security issues. JASON –...

451

DOE Solicits Feedback on Subsurface Characterization to Commercialize Viable EGS  

Broader source: Energy.gov [DOE]

To better engineer commercially viable EGS technologies, the Energy Department is soliciting information to more accurately measure and quantify vital subsurface parameters in EGS settings and how they change throughout EGS development phases.

452

Neutron and Gamma Ray Scattering Measurements for Subsurface Geochemistry  

Science Journals Connector (OSTI)

...subsurface porous rocks that covers...definition ofa reservoir is made more...extent, porosity, hydrocarbon...possibility for the reservoir to be profitable...assessment of rock formation...reservoir quality. The selection...ofporosity, permeability, and hydrocarbon...

Darwin V. Ellis

1990-10-05T23:59:59.000Z

453

On the use of drogues for measuring subsurface ocean currents  

Science Journals Connector (OSTI)

Drogues are frequently used to measure ocean currents. Wind drag and subsurface drag on the ... , as well as non-linear effects of current velocity gradients, can cause slippage past the ... must be considered wh...

Dr. David A. Booth

1981-01-01T23:59:59.000Z

454

Installing a Subsurface Drip Irrigation System for Row Crops  

E-Print Network [OSTI]

This publication describes the components of a subsurface drip irrigation system and the procedure for installing such a system. Each step is outlined and illustrated. Steps include tape injection, trenching, connecting drip lines, back-filling...

Enciso, Juan

2004-09-07T23:59:59.000Z

455

Channel erosion due to subsurface flow Braunen Smith,1  

E-Print Network [OSTI]

Channel erosion due to subsurface flow Braunen Smith,1 Arshad Kudrolli,1 Alexander E. Lobkovsky,2, and D. H. Rothman, J. Fluid Mech. 503, 357 2004 . 2 A. E. Lobkovsky, B. Smith, A. Kudrolli, D. C. Mohrig

Kudrolli, Arshad

456

BOD5 removal in subsurface flow constructed wetlands  

E-Print Network [OSTI]

The frequency of on-site systems for treatment of domestic wastewater is increasing with new residential development in both rural and low-density suburban areas. Subsurface flow constructed wetlands (SFCW) have emerged as a viable option to achieve...

Melton, Rebecca Hobbs

2005-08-29T23:59:59.000Z

457

Laboratory simulation of subsurface airflow beneath a building  

E-Print Network [OSTI]

Vapor intrusion is the vapor-phase migration of volatile organic compounds (VOCs) into buildings due to subsurface soil or groundwater contamination. Oxygen replenishment rates beneath a building are significant for ...

Corsello, Joseph William

2014-01-01T23:59:59.000Z

458

Long-term hydraulic properties of subsurface flow constructed wetlands  

E-Print Network [OSTI]

LONG-TERM HYDRAULIC PROPERTIES OF SUBSURFACE FLOW CONSTRUCTED WETLANDS A Thesis by GLENN ALLEN TURNER Submitted to the Office of Graduate studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1994 Major Subject: Agricultural Engineering LONG-TERM HYDRAULIC PROPERTIES OF SUBSURFACE FLOW CONSTRUCTED WETLANDS by GLENN ALLEN TURNER Submitted to Texas A&M University in partial fulfdlment of the requirements for the degree...

Turner, Glenn Allen

2012-06-07T23:59:59.000Z

459

Subsurface distributions of petroleum from an offshore well blowout. The Ixtoc I blowout, Bay of Campeche  

Science Journals Connector (OSTI)

Subsurface distributions of petroleum from an offshore well blowout. ... Photochemistry of Deepwater Horizon Oil ...

Paul D. Boehm; David L. Fiest

1982-02-01T23:59:59.000Z

460

Secondary Ion Mass Spectrometry Imaging of Dictyostelium discoideum Aggregation Streams  

SciTech Connect (OSTI)

High resolution imaging mass spectrometry could become a valuable tool for cell and developmental biology, but both, high spatial and mass spectral resolution are needed to enable this. In this report, we employed Bi3 bombardment time-of-flight (Bi3 ToF-SIMS) and C60 bombardment Fourier transform ion cyclotron resonance secondary ion mass spectrometry (C60 FTICR-SIMS) to image Dictyostelium discoideum aggregation streams. Nearly 300 lipid species were identified from the aggregation streams. High resolution mass spectrometry imaging (FTICR-SIMS) enabled the generation of multiple molecular ion maps at the nominal mass level and provided good coverage for fatty acyls, prenol lipids, and sterol lipids. The comparison of Bi3 ToF-SIMS and C60 FTICR-SIMS suggested that while the first provides fast, high spatial resolution molecular ion images, the chemical complexity of biological samples warrants the use of high resolution analyzers for accurate ion identification.

Debord, J. Daniel; Smith, Donald F.; Anderton, Christopher R.; Heeren, Ronald M.; Pasa-Tolic, Ljiljana; Gomer, Richard H.; Fernandez-Lima, Francisco A.

2014-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "high-resolution subsurface imaging" 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

Video Toroid Cavity Imager  

DOE Patents [OSTI]

A video toroid cavity imager for in situ measurement of electrochemical properties of an electrolytic material sample includes a cylindrical toroid cavity resonator containing the sample and employs NMR and video imaging for providing high-resolution spectral and visual information of molecular characteristics of the sample on a real-time basis. A large magnetic field is applied to the sample under controlled temperature and pressure conditions to simultaneously provide NMR spectroscopy and video imaging capabilities for investigating electrochemical transformations of materials or the evolution of long-range molecular aggregation during cooling of hydrocarbon melts. The video toroid cavity imager includes a miniature commercial video camera with an adjustable lens, a modified compression coin cell imager with a fiat circular principal detector element, and a sample mounted on a transparent circular glass disk, and provides NMR information as well as a video image of a sample, such as a polymer film, with micrometer resolution.

Gerald, Rex E. II; Sanchez, Jairo; Rathke, Jerome W.

2004-08-10T23:59:59.000Z

462

Preliminary Results from the Cosmic Background Imager  

E-Print Network [OSTI]

The Cosmic Background Imager (CBI) is a 13-element interferometer designed to image intrinsic anisotropies in the cosmic microwave background (CMB) on arcminute scales. A review of the capabilities of the instrument is presented, together with a discussion of observations which have been taken over the past 9 months from the Atacama desert of Chile. We present preliminary high-resolution mosaiced images of the CMB obtained from recent CBI data and discuss topics which the CBI will address in the near future.

B. S. Mason; J. K. Cartwright; S. Padin; T. J. Pearson; A. C. S. Readhead; M. Shepherd; J. Sievers; P. Udomprasert

2001-01-11T23:59:59.000Z

463

Synthetic aperture integration (SAI) algorithm for SAR imaging  

DOE Patents [OSTI]

A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes the return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.

Chambers, David H; Mast, Jeffrey E; Paglieroni, David W; Beer, N. Reginald

2013-07-09T23:59:59.000Z

464

Spatially adaptive migration tomography for multistatic GPR imaging  

DOE Patents [OSTI]

A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes the return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.

Paglieroni, David W; Beer, N. Reginald

2013-08-13T23:59:59.000Z

465

A digital map of the high center (HC) and low center (LC) polygon boundaries delineated from high resolution LiDAR data for Barrow, Alaska  

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

This dataset represent a map of the high center (HC) and low center (LC) polygon boundaries delineated from high resolution LiDAR data for the arctic coastal plain at Barrow, Alaska. The polygon troughs are considered as the surface expression of the ice-wedges. The troughs are in lower elevations than the interior polygon. The trough widths were initially identified from LiDAR data, and the boundary between two polygons assumed to be located along the lowest elevations on trough widths between them.

Gangodagamage, Chandana; Wullschleger, Stan

466

CARMENES: Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph  

E-Print Network [OSTI]

CARMENES, Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph, is a study for a next-generation instrument for the 3.5m Calar Alto Telescope to be designed, built, integrated, and operated by a consortium of nine German and Spanish institutions. Our main objective is finding habitable exoplanets around M dwarfs, which will be achieved by radial velocity measurements on the m/s level in the near-infrared, where low-mass stars emit the bulk of their radiation.

Quirrenbach, A; Mandel, H; Caballero, J A; Ribas, I; Reiners, A; Mundt, R; Abril, M; Afonso, C; Bean, J L; Bejar, V J S; Becerril, S; Boehm, A; Cardenas, C; Claret, A; Colome, J; Costillo, L P; Dreizler, S; Fernandez, M; Francisco, X; Garrido, R; Hernandez, J I Gonzalez; Guenther, E W; Gutierrez-Soto, J; Joergens, V; Hatzes, A P; Henning, T; Herrero, E; Kurster, M; Laun, W; Lenzen, R; Mall, U; Martin, E L; Martin-Ruiz, S; Montes, D; Morales, J C; Munoz, R Morales; Moya, A; Naranjo, V; Rabaza, O; Ramon, A; Rebolo, R; Reffert, S; Rodler, F; Rodriguez, E; Trinidad, A Rodriguez; Rohloff, R -R; Carrasco, M A Sanchez; Schmidt, C; Seifert, W; Setiawan, J; Stahl, O; Suarez, J C; Wiedemann, G; del Burgo, C; Galadi, D; Sanchez-Blanco, E; Xu, W

2009-01-01T23:59:59.000Z

467

The link between a negative high resolution resist contrast/developer performance and the Flory-Huggins parameter estimated from the Hansen solubility sphere  

SciTech Connect (OSTI)

We have implemented a technique to identify candidate polymer solvents for spinning, developing, and rinsing for a high resolution, negative electron beam resist hexa-methyl acetoxy calix(6)arene to elicit the optimum pattern development performance. Using the three dimensional Hansen solubility parameters for over 40 solvents, we have constructed a Hansen solubility sphere. From this sphere, we have estimated the Flory Huggins interaction parameter for solvents with hexa-methyl acetoxy calix(6)arene and found a correlation between resist development contrast and the Flory-Huggins parameter. This provides new insights into the development behavior of resist materials which are necessary for obtaining the ultimate lithographic resolution.

StCaire, Lorri; Olynick, Deirdre L.; Chao, Weilun L.; Lewis, Mark D.; Lu, Haoren; Dhuey, Scott D.; Liddle, J. Alexander

2008-07-01T23:59:59.000Z

468

High-resolution X-ray characterization of mid-IR Al0.45Ga0.55As/GaAs Quantum Cascade Laser structures  

Science Journals Connector (OSTI)

Abstract In this paper, the X-ray diffraction profiles of Quantum Cascade Laser (QCL) structures have been investigated. The examined structures were grown by molecular beam epitaxy. The crystallographic characterization was carried out using high resolution X-ray diffractometer. The information about thickness of individual layers and periodicity of the structures was derived from simulation of diffraction profiles calculated using dynamical diffraction theory. The influence of interface roughness on the shape of satellite peaks was studied. The particular attention has been paid to the analysis of the broadening of satellite peaks. The presented results show that broadening is due to the variation of thickness of individual layers.

J. Kubacka-Traczyk; I. Sankowska; O.H. Seeck; K. Kosiel; M. Bugajski

2014-01-01T23:59:59.000Z

469

New approach to high-resolution electron-energy-loss spectroscopy of polar materials: Studies of water and methanol adsorption on ultrathin MgO(100) films  

Science Journals Connector (OSTI)

A novel approach to the application of high-resolution electron-energy-loss spectroscopy to polar materials is demonstrated in this Letter. By using a high-impact-energy beam and an off-specular scattering geometry, losses due to excitation of the adsorbates are observed in the 1000–4000-cm-1 range with little interference from the intense losses due to multiple surface optical phonons (Fuchs-Kliewer modes). Adsorption of water and methanol on ultrathin MgO(100) films on Mo(100) have been studied using this new approach.

Ming-Cheng Wu; Cesar A. Estrada; D. Wayne Goodman

1991-11-11T23:59:59.000Z

470

A digital map of the high center (HC) and low center (LC) polygon boundaries delineated from high resolution LiDAR data for Barrow, Alaska  

SciTech Connect (OSTI)

This dataset represent a map of the high center (HC) and low center (LC) polygon boundaries delineated from high resolution LiDAR data for the arctic coastal plain at Barrow, Alaska. The polygon troughs are considered as the surface expression of the ice-wedges. The troughs are in lower elevations than the interior polygon. The trough widths were initially identified from LiDAR data, and the boundary between two polygons assumed to be located along the lowest elevations on trough widths between them.

Gangodagamage, Chandana; Wullschleger, Stan

2014-07-03T23:59:59.000Z

471

High-Resolution Soft X-Ray Spectral Analysis in the CK Region of Titanium Carbide (TiC) using the DV-X alpha Molecular Orbital Method  

SciTech Connect (OSTI)

We used the DV-X alpha method to analyze the high-resolution soft X-ray emission and absorption spectra in the CK region of titanium carbide (TiC). The spectral profiles of the X-ray emission and absorption can be ssuscfucelly reproduced by the occupied and unoccupied density of states (DOS ), respectively, in the C2p orbitals of the center carbon atoms in a Ti62C63 cluster model, suggesting that the center carbon atom in a large cluster model expanded to the cubic-structured 53 (= 125) atoms provides sufficient DOS for the X-ray spectral analysis of rock-salt structured metal carbides.

Shimomura, Kenta; Muramatsu, Yasuji; Denlinger, Jonathan D.; Gullikson, Eric M.

2008-10-31T23:59:59.000Z

472

Mapping DNAPL transport contamination in sedimentary and fractured rock aquifers with high resolution borehole seismic imaging Project No. SF11SS13 FY01 Annual Report  

E-Print Network [OSTI]

During operation, the heat of combustion of the contaminantstoluene, which has a heat of combustion seven times greater

Geller, J.T.; Majer, E.L.; Peterson, J.E.; Williams, K.H.; Flexser, S.

2001-01-01T23:59:59.000Z

473

Mapping DNAPL transport contamination in sedimentary and fractured rock aquifers with high resolution borehole seismic imaging Project No. SF11SS13 FY01 Annual Report  

E-Print Network [OSTI]

rig-installed boreholes have been successful at other sedimentary sites, additional boreholes at the Northeast site should be installed with rotary

Geller, J.T.; Majer, E.L.; Peterson, J.E.; Williams, K.H.; Flexser, S.

2001-01-01T23:59:59.000Z