Powered by Deep Web Technologies
Note: This page contains sample records for the topic "tomography rock density" 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.


1

Rock Density | 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 » Rock Density Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Density Details Activities (2) Areas (2) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Rock Lab Analysis Information Provided by Technique Lithology: Density of different lithologic units. Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 10.001,000 centUSD 0.01 kUSD 1.0e-5 MUSD 1.0e-8 TUSD / sample

2

Rock Density At Alum Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Rock Density At Alum Area (DOE GTP) Rock Density At Alum Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Density At Alum Geothermal Area (DOE GTP) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Rock Density Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Rock_Density_At_Alum_Area_(DOE_GTP)&oldid=402985" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services OpenEI partners with a broad range of international organizations to grow

3

The effect of rock density in synthesizing seismic reflection records  

E-Print Network (OSTI)

was gained on the relative significance of rock densities in determining the reflection coefficient. The error which would be expected in the reflection coefficient at an interface when computed from the velocity inforsmtion only can be estimated from... was gained on the relative significance of rock densities in determining the reflection coefficient. The error which would be expected in the reflection coefficient at an interface when computed from the velocity inforsmtion only can be estimated from...

Morris, Gerald Brooks

2012-06-07T23:59:59.000Z

4

Hydraulic conductivity imaging from 3-D transient hydraulic tomography at several pumping/observation densities  

E-Print Network (OSTI)

of transport and design and operation of ground- water remediation systems, are crucially dependent transient hydraulic tomography at several pumping/observation densities, Water Resour. Res., 49, 7311

Barrash, Warren

5

Accounting for spatially variable resolution in electrical resistivity tomography through field-scale rock-physics relations  

E-Print Network (OSTI)

Accounting for spatially variable resolution in electrical resistivity tomography through field of the voltages measured in an electrical resistivity tomography ERT survey produces maps of electrical resistivity, which can be used to infer changes in electrical properties, such as those caused

Singha, Kamini

6

Pseudolocal tomography  

DOE Patents (OSTI)

Local tomographic data is used to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. The relative attenuation data is input to a pseudo-local tomography function, where the difference between the internal density and the pseudo-local tomography function is computed across the discontinuity. The pseudo-local tomography function outputs the location of the discontinuity and the difference in density between the first density and the second density. 7 figs.

Katsevich, A.J.; Ramm, A.G.

1996-07-23T23:59:59.000Z

7

Pseudolocal tomography  

DOE Patents (OSTI)

Local tomographic data is used to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. The relative attenuation data is input to a pseudo-local tomography function, where the difference between the internal density and the pseudo-local tomography function is computed across the discontinuity. The pseudo-local tomography function outputs the location of the discontinuity and the difference in density between the first density and the second density.

Katsevich, Alexander J. (Los Alamos, NM); Ramm, Alexander G. (Manhattan, KS)

1996-01-01T23:59:59.000Z

8

Half-metallicity and stability of the rock salt BaC and SrC (111) surfaces: A density functional study  

SciTech Connect

The electronic structure and magnetic properties of relaxed (111) surfaces of the alkaline-earth monocarbides BaC and SrC in the stable rock salt structure, are calculated on the basis of first principle density functional theory within the framework of self-consistent field plane wave pseudo-potential method, using the generalized gradient approximation for the exchange-correlation functional. The results of this study reveal that the C-terminated (111) surfaces retain the bulk half-metallic property in both BaC and SrC. The half-metallicity of the C-terminated BaC surface is found to be more robust compared to the bulk BaC due to the larger half-metallic energy gap. In contrast, the half-metallic energy gap of the C-terminated SrC surface is found to be smaller than that of the bulk. The Ba-terminated surface of BaC and the Sr-terminated surface of SrC, however, lose their bulk half-metallicity due to the formation of surface states in the majority spin band gap. The calculations also show that the atomic magnetic moments at the half-metallic C-terminated surfaces in both BaC and SrC increase considerably with respect to the corresponding bulk values, which is explained in terms of an increase in the number of unpaired 2p electrons of the carbon atom at the surface. We also discuss the stability of the surfaces via the calculated bulk formation energies. The bulk formation energies for both BaC and SrC in the rock salt structure are found to be positive, which indicate that the surfaces are not stable at normal pressure and temperature conditions, and non-equilibrium growth techniques may be required for the realization of BaC and SrC thin films.

Tabatabaeifar, A. H.; Davatolhagh, S., E-mail: davatolhagh@susc.ac.ir; Foroughpour, M. [Department of Physics, College of Sciences, Shiraz University, Shiraz 71454 (Iran, Islamic Republic of)

2013-12-07T23:59:59.000Z

9

Rock Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

Rock Lab Analysis Rock Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Lab Analysis Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Lab Analysis Techniques Information Provided by Technique Lithology: Core and cuttings analysis is done to define lithology. Water rock interaction. Can determine detailed information about rock composition and morphology. Density of different lithologic units. Rapid and unambiguous identification of unknown minerals.[1] Stratigraphic/Structural: Core analysis can locate faults or fracture networks. Oriented core can give additional important information on anisotropy. Historic structure and deformation of land.

10

White Rock  

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

Furnished house for rent in rural White Rock Bright and sunny Ideal for a young family Safe neighborhood 10 min drive to LANL 1300 per month, basic utilities included 1180 sq ft....

11

Rock magnetism  

Science Journals Connector (OSTI)

The past three decades have witnessed a new paradigm, the plate tectonics paradigm, in Earth sciences. The record of the Earth's magnetic field stored in rocks played a major role in the establishment of this par...

Ronald T. Merrill

1989-01-01T23:59:59.000Z

12

Enhanced local tomography  

DOE Patents (OSTI)

Local tomography is enhanced to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. In a first method for evaluating the value of the discontinuity, the relative attenuation data is inputted to a local tomography function .function..sub..LAMBDA. to define the location S of the density discontinuity. The asymptotic behavior of .function..sub..LAMBDA. is determined in a neighborhood of S, and the value for the discontinuity is estimated from the asymptotic behavior of .function..sub..LAMBDA.. In a second method for evaluating the value of the discontinuity, a gradient value for a mollified local tomography function .gradient..function..sub..LAMBDA..epsilon. (x.sub.ij) is determined along the discontinuity; and the value of the jump of the density across the discontinuity curve (or surface) S is estimated from the gradient values.

Katsevich, Alexander J. (Los Alamos, NM); Ramm, Alexander G. (Manhattan, KS)

1996-01-01T23:59:59.000Z

13

Computed Tomography Status  

DOE R&D Accomplishments (OSTI)

Computed tomography (CT) is a relatively new radiographic technique which has become widely used in the medical field, where it is better known as computerized axial tomographic (CAT) scanning. This technique is also being adopted by the industrial radiographic community, although the greater range of densities, variation in samples sizes, plus possible requirement for finer resolution make it difficult to duplicate the excellent results that the medical scanners have achieved.

Hansche, B. D.

1983-00-00T23:59:59.000Z

14

Neutron Tomography and Space  

E-Print Network (OSTI)

Kevin Shields, “Optimization of neutron tomography for rapidNEUTRON TOMOGRAPHY AND SPACE Hal Egbert, Ronald Walker, R.industrial applications[1]. Neutron Computed Tomography was

Egbert, Hal; Walker, Ronald; Flocchini, R.

2007-01-01T23:59:59.000Z

15

Atom Probe Tomography | EMSL  

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

Atom Probe Tomography Atom Probe Tomography The LEAP 4000 XHR local electrode atom probe tomography instrument enabled the first-ever comprehensive and accurate 3-D chemical...

16

Generalized local emission tomography  

DOE Patents (OSTI)

Emission tomography enables locations and values of internal isotope density distributions to be determined from radiation emitted from the whole object. In the method for locating the values of discontinuities, the intensities of radiation emitted from either the whole object or a region of the object containing the discontinuities are inputted to a local tomography function .function..sub..LAMBDA..sup.(.PHI.) to define the location S of the isotope density discontinuity. The asymptotic behavior of .function..sub..LAMBDA..sup.(.PHI.) is determined in a neighborhood of S, and the value for the discontinuity is estimated from the asymptotic behavior of .function..sub..LAMBDA..sup.(.PHI.) knowing pointwise values of the attenuation coefficient within the object. In the method for determining the location of the discontinuity, the intensities of radiation emitted from an object are inputted to a local tomography function .function..sub..LAMBDA..sup.(.PHI.) to define the location S of the density discontinuity and the location .GAMMA. of the attenuation coefficient discontinuity. Pointwise values of the attenuation coefficient within the object need not be known in this case.

Katsevich, Alexander J. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

17

Doppler Tomography  

E-Print Network (OSTI)

I review the method of Doppler tomography which translates binary-star line profiles taken at a series of orbital phases into a distribution of emission over the binary. I begin with a discussion of the basic principles behind Doppler tomography, including a comparison of the relative merits of maximum entropy regularisation versus filtered back-projection for implementing the inversion. Following this I discuss the issue of noise in Doppler images and possible methods for coping with it. Then I move on to look at the results of Doppler Tomography applied to cataclysmic variable stars. Outstanding successes to date are the discovery of two-arm spiral shocks in cataclysmic variable accretion discs and the probing of the stream/magnetospheric interaction in magnetic cataclysmic variable stars. Doppler tomography has also told us much about the stream/disc interaction in non-magnetic systems and the irradiation of the secondary star in all systems. The latter indirectly reveals such effects as shadowing by the accretion disc or stream. I discuss all of these and finish with some musings on possible future directions for the method. At the end I include a tabulation of Doppler maps published in refereed journals.

T. R. Marsh

2000-11-01T23:59:59.000Z

18

Computed tomography:the details.  

SciTech Connect

Computed Tomography (CT) is a well established technique, particularly in medical imaging, but also applied in Synthetic Aperture Radar (SAR) imaging. Basic CT imaging via back-projection is treated in many texts, but often with insufficient detail to appreciate subtleties such as the role of non-uniform sampling densities. Herein are given some details often neglected in many texts.

Doerry, Armin Walter

2007-07-01T23:59:59.000Z

19

Rock Properties Model  

SciTech Connect

The purpose of this model report is to document the Rock Properties Model version 3.1 with regard to input data, model methods, assumptions, uncertainties and limitations of model results, and qualification status of the model. The report also documents the differences between the current and previous versions and validation of the model. The rock properties model provides mean matrix and lithophysae porosity, and the cross-correlated mean bulk density as direct input to the ''Saturated Zone Flow and Transport Model Abstraction'', MDL-NBS-HS-000021, REV 02 (BSC 2004 [DIRS 170042]). The constraints, caveats, and limitations associated with this model are discussed in Section 6.6 and 8.2. Model validation accomplished by corroboration with data not cited as direct input is discussed in Section 7. The revision of this model report was performed as part of activities being conducted under the ''Technical Work Plan for: The Integrated Site Model, Revision 05'' (BSC 2004 [DIRS 169635]). The purpose of this revision is to bring the report up to current procedural requirements and address the Regulatory Integration Team evaluation comments. The work plan describes the scope, objectives, tasks, methodology, and procedures for this process.

C. Lum

2004-09-16T23:59:59.000Z

20

Rock magnetism of remagnetized carbonate rocks: another look  

E-Print Network (OSTI)

and significance of magnetism in sedimentary rocks. Journal1997. Rock Magnetism. ¨ zdemir, O Dunlop, D. J. & Oon July 30, 2013 ROCK MAGNETISM: REMAGNETIZED CARBONATES

Jackson, M.; Swanson-Hysell, N. L

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Inversion of Scattered Waves for Material Properties in Fractured Rock  

SciTech Connect

The authors apply a recently developed low-frequency, non-linear inversion method which includes near and far field terms to a crosshole data set to determine the bulk and shear modulus, as well as the density for a fractured zone in a granitic rock mass. The method uses the scattered elastic wavefield which is extracted from the recorded data before the inversion is performed. The inversion result is appraised by investigating the resolution and standard deviation of the model estimates. The sensitivity of the three parameters to different features of the medium is revealed. While the bulk modulus appears to be sensitive to voids and welded contacts, the density is mostly affected by fractured zones. The shear modulus is least constrained due to the absence of S wave anisotropy information. It is shown that the three medium parameters are generally sensitive to other medium features than those determined by velocity inversions. Thus this method is viewed as a complimentary approach to travel time tomography which provides more insight into the material properties of inhomogeneous media.

Gritto, Roland; Korneev, Valeri A.; Johnson, Lane R.

1999-07-01T23:59:59.000Z

22

Imaging the Soultz Enhanced Geothermal Reservoir using double-difference tomography and microseismic data  

E-Print Network (OSTI)

We applied the double-difference tomography method to image the P and S-wave velocity structure of the European Hot Dry Rock geothermal reservoir (also known as the Soultz Enhanced Geothermal System) at Soultz-sous-Forets, ...

Piñeros Concha, Diego Alvaro

2010-01-01T23:59:59.000Z

23

Category:Rock Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Rock Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Rock Lab Analysis page? For detailed information on exploration techniques, click here. Category:Rock Lab Analysis Add.png Add a new Rock Lab Analysis Technique Pages in category "Rock Lab Analysis" The following 9 pages are in this category, out of 9 total. C Core Analysis Cuttings Analysis I Isotopic Analysis- Rock O Over Core Stress P Paleomagnetic Measurements Petrography Analysis R Rock Density X X-Ray Diffraction (XRD) X-Ray Fluorescence (XRF)

24

Waste Inspection Tomography (WIT)  

SciTech Connect

Waste Inspection Tomography (WIT) provides mobile semi-trailer mounted nondestructive examination (NDE) and assay (NDA) for nuclear waste drum characterization. WIT uses various computed tomography (CT) methods for both NDE and NDA of nuclear waste drums. Low level waste (LLW), transuranic (TRU), and mixed radioactive waste can be inspected and characterized without opening the drums. With externally transmitted x-ray NDE techniques, WIT has the ability to identify high density waste materials like heavy metals, define drum contents in two- and three-dimensional space, quantify free liquid volumes through density and x-ray attenuation coefficient discrimination, and measure drum wall thickness. With waste emitting gamma-ray NDA techniques, WIT can locate gamma emitting radioactive sources in two- and three-dimensional space, identify gamma emitting isotopic species, identify the external activity levels of emitting gamma-ray sources, correct for waste matrix attenuation, provide internal activity approximations, and provide the data needed for waste classification as LLW or TRU. The mobile feature of WIT allows inspection technologies to be brought to the nuclear waste drum storage site without the need to relocate drums for safe, rapid, and cost-effective characterization of regulated nuclear waste. The combination of these WIT characterization modalities provides the inspector with an unprecedented ability to non-invasively characterize the regulated contents of waste drums as large as 110 gallons, weighing up to 1,600 pounds. Any objects that fit within these size and weight restrictions can also be inspected on WIT, such as smaller waste bags and drums that are five and thirty-five gallons.

Bernardi, R.T.

1995-12-01T23:59:59.000Z

25

Thermophysical properties of the Po Basin rocks  

Science Journals Connector (OSTI)

......W.E., AAPG, Memoir 1. Hadgu T. , Clinton C.L., Bean J.E., 2007. Determination of heat capacity of Yucca Mountain stratigraphic layer, Int. J. Rock Mech. Min. Sci., 44, 1022-1034. Hamilton E. , 1976. Variations of density......

V. Pasquale; G. Gola; P. Chiozzi; M. Verdoya

2011-07-01T23:59:59.000Z

26

Rock Magnetism To-Day  

Science Journals Connector (OSTI)

... ROCK magnetism is that branch of geophysics that deals with the origin of magnetization in rocks and ... that deals with the origin of magnetization in rocks and its stability. Workers in rock magnetism are also interested in the phenomenon of self-reversal, that is, a rock acquiring ...

SUBIR K. BANERJEE

1966-02-12T23:59:59.000Z

27

Session: Hard Rock Penetration  

SciTech Connect

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Hard Rock Penetration - Summary'' by George P. Tennyson, Jr.; ''Overview - Hard Rock Penetration'' by James C. Dunn; ''An Overview of Acoustic Telemetry'' by Douglas S. Drumheller; ''Lost Circulation Technology Development Status'' by David A. Glowka; ''Downhole Memory-Logging Tools'' by Peter Lysne.

Tennyson, George P. Jr.; Dunn, James C.; Drumheller, Douglas S.; Glowka, David A.; Lysne, Peter

1992-01-01T23:59:59.000Z

28

A Comprehensive Study Of Fracture Patterns And Densities In The...  

Open Energy Info (EERE)

Study Of Fracture Patterns And Densities In The Geysers Geothermal Reservoir Using Microearthquake Shear-Wave Splitting Tomography Jump to: navigation, search OpenEI Reference...

29

Mapping higher-order brain function and resting-state networks with diffuse optical tomography  

Science Journals Connector (OSTI)

We present integrative advances in high-density diffuse optical tomography imaging arrays, large field-of-view instrumentation, and anatomical head modeling. The system was tested by...

Eggebrecht, Adam T; Ferradal, Silvina L; Robichaux-Viehoever, Amy; Hassanpour, Mahlega S; Dehghani, Hamid; Snyder, Abraham; Hershey, Tamara; Culver, Joseph P

30

ELECTRICAL IMPEDANCE TOMOGRAPHY ON A RESISTIVE NETWORK WITH INTERNAL CURRENTS  

E-Print Network (OSTI)

ELECTRICAL IMPEDANCE TOMOGRAPHY ON A RESISTIVE NETWORK WITH INTERNAL CURRENTS YONG JUNG KIM AND MIN resonance image, electrical density image, electrical impedance tomog- raphy, resistive network, anisotropic from internal currents and the boundary conductivity. An electrically conducting body is discretized

Kim, Yong Jung

31

Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators  

Open Energy Info (EERE)

Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators In The Western Great Basin Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators In The Western Great Basin Details Activities (8) Areas (4) Regions (0) Abstract: Body and surface wave tomography are two of the primary methods for estimation of regional scale seismic velocity variations. Seismic velocity is affected by temperature and rock composition in complex ways, but when combined with geologic and structural maps, relative temperature can in some cases be estimated. We present preliminary tomographic models for compressional and shear-wave velocity using local and regional earthquakes recorded by Earthscope Transportable Array stations, network

32

Turbocharging Quantum Tomography.  

SciTech Connect

Quantum tomography is used to characterize quantum operations implemented in quantum information processing (QIP) hardware. Traditionally, state tomography has been used to characterize the quantum state prepared in an initialization procedure, while quantum process tomography is used to characterize dynamical operations on a QIP system. As such, tomography is critical to the development of QIP hardware (since it is necessary both for debugging and validating as-built devices, and its results are used to influence the next generation of devices). But tomography su %7C ers from several critical drawbacks. In this report, we present new research that resolves several of these flaws. We describe a new form of tomography called gate set tomography (GST), which unifies state and process tomography, avoids prior methods critical reliance on precalibrated operations that are not generally available, and can achieve unprecedented accuracies. We report on theory and experimental development of adaptive tomography protocols that achieve far higher fidelity in state reconstruction than non-adaptive methods. Finally, we present a new theoretical and experimental analysis of process tomography on multispin systems, and demonstrate how to more e %7C ectively detect and characterize quantum noise using carefully tailored ensembles of input states.

Blume-Kohout, Robin J; Gamble, John King,; Nielsen, Erik; Maunz, Peter Lukas Wilhelm; Scholten, Travis L.; Rudinger, Kenneth Michael

2015-01-01T23:59:59.000Z

33

Definition: Density Log | Open Energy Information  

Open Energy Info (EERE)

Density Log Density Log Jump to: navigation, search Dictionary.png Density Log Density logging is a well logging tool that can provide a continuous record of a formation's bulk density along the length of a borehole. In geology, bulk density is a function of the density of the minerals forming a rock (i.e. matrix) and the fluid enclosed in the pore spaces.[1] View on Wikipedia Wikipedia Definition Density logging is a well logging tool that can provide a continuous record of a formation's bulk density along the length of a borehole. In geology, bulk density is a function of the density of the minerals forming a rock and the fluid enclosed in the pore spaces. This is one of three well logging tools that are commonly used to calculate porosity, the other two being sonic logging and neutron porosity logging

34

Modulated Luminescent Tomography  

E-Print Network (OSTI)

Two such techniques, X-ray luminescence computed tomography (XLCT), [9] and X-ray micro- ..... Optical-Thermal Response of Laser-Irradiated Tissue.

2014-09-10T23:59:59.000Z

35

Internal Structure of the Green Lake 5 Rock Glacier, Colorado Front Range, USA M. Leopold ,1* M.W. Williams ,2  

E-Print Network (OSTI)

Internal Structure of the Green Lake 5 Rock Glacier, Colorado Front Range, USA M. Leopold ,1* M tomography--were used to develop a detailed subsurface model of the Green Lake 5 rock glacier in the Colorado (Corte, 1976; Clow et al., 2003). Recently, Azo´car and Brenning (2010) and Brenning and Azo´car (2010

Williams, Mark W.

36

Microwave assisted hard rock cutting  

DOE Patents (OSTI)

An apparatus for the sequential fracturing and cutting of subsurface volume of hard rock (102) in the strata (101) of a mining environment (100) by subjecting the volume of rock to a beam (25) of microwave energy to fracture the subsurface volume of rock by differential expansion; and , then bringing the cutting edge (52) of a piece of conventional mining machinery (50) into contact with the fractured rock (102).

Lindroth, David P. (Apple Valley, MN); Morrell, Roger J. (Bloomington, MN); Blair, James R. (Inver Grove Heights, MN)

1991-01-01T23:59:59.000Z

37

Tomography and reliable information  

Science Journals Connector (OSTI)

Principles of tomography are developed and applied to the problem of two-view interferometry on a tokamak plasma. It is shown that M equispaced views, or projections, of a...

Howard, John

1988-01-01T23:59:59.000Z

38

Multi-Scale Optical Coherence Tomography Imaging  

E-Print Network (OSTI)

Fourier domain optical coherence tomography and methods forspeed spectral-domain optical coherence tomography at 1.3umJ. G. (1991). Optical coherence tomography. Science, 254(

Oliveira, Michael

2014-01-01T23:59:59.000Z

39

Lower crustal density estimation using the density-slowness relationship: a preliminary study  

E-Print Network (OSTI)

-facies metamorphic rocks. Velocity-density data was compiled from the literature for pressures greater than 600 MPa and linear fits of density on slowness were made. No correction was made for the effect of temperature. Densities were then estimated for a number...

Jones, Gary Wayne

2012-06-07T23:59:59.000Z

40

Rock Sampling | Open Energy Information  

Open Energy Info (EERE)

Rock Sampling Rock Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Sampling Details Activities (13) Areas (13) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Sampling Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting. Hydrological: Isotope geochemistry can reveal fluid circulation of a geothermal system.

Note: This page contains sample records for the topic "tomography rock density" 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

Overview - Hard Rock Penetration  

SciTech Connect

The Hard Rock Penetration program is developing technology to reduce the costs of drilling and completing geothermal wells. Current projects include: lost circulation control, rock penetration mechanics, instrumentation, and industry/DOE cost shared projects of the Geothermal Drilling Organization. Last year, a number of accomplishments were achieved in each of these areas. A new flow meter being developed to accurately measure drilling fluid outflow was tested extensively during Long Valley drilling. Results show that this meter is rugged, reliable, and can provide useful measurements of small differences in fluid inflow and outflow rates. By providing early indications of fluid gain or loss, improved control of blow-out and lost circulation problems during geothermal drilling can be expected. In the area of downhole tools for lost circulation control, the concept of a downhole injector for injecting a two-component, fast-setting cementitious mud was developed. DOE filed a patent application for this concept during FY 91. The design criteria for a high-temperature potassium, uranium, thorium logging tool featuring a downhole data storage computer were established, and a request for proposals was submitted to tool development companies. The fundamental theory of acoustic telemetry in drill strings was significantly advanced through field experimentation and analysis. A new understanding of energy loss mechanisms was developed.

Dunn, James C.

1992-03-24T23:59:59.000Z

42

Overview: Hard Rock Penetration  

SciTech Connect

The Hard Rock Penetration program is developing technology to reduce the costs of drilling and completing geothermal wells. Current projects include: lost circulation control, rock penetration mechanics, instrumentation, and industry/DOE cost shared projects of the Geothermal Drilling organization. Last year, a number of accomplishments were achieved in each of these areas. A new flow meter being developed to accurately measure drilling fluid outflow was tested extensively during Long Valley drilling. Results show that this meter is rugged, reliable, and can provide useful measurements of small differences in fluid inflow and outflow rates. By providing early indications of fluid gain or loss, improved control of blow-out and lost circulation problems during geothermal drilling can be expected. In the area of downhole tools for lost circulation control, the concept of a downhole injector for injecting a two-component, fast-setting cementitious mud was developed. DOE filed a patent application for this concept during FY 91. The design criteria for a high-temperature potassium, uranium, thorium logging tool featuring a downhole data storage computer were established, and a request for proposals was submitted to tool development companies. The fundamental theory of acoustic telemetry in drill strings was significantly advanced through field experimentation and analysis. A new understanding of energy loss mechanisms was developed.

Dunn, J.C.

1992-08-01T23:59:59.000Z

43

Geometric Tomography: A Limited-View Approach for Computed Tomography  

E-Print Network (OSTI)

Geometric Tomography: A Limited-View Approach for Computed Tomography Peter B. Noël, Jinhui Xu Keywords Computed Tomography; Geometric Compressed Sensing; Topo- logical Peeling. ABSTRACT Computed to generate 3D data, denoted f, directly from projec- tions, denoted g. Thus, the projection relationship can

Corso, Jason J.

44

IntroductIon The range-restricted Rock Firefinch Lagonosticta sangui  

E-Print Network (OSTI)

conservation importance within the Jos Plateau Forest-Grassland Mosaic eco-region, Nigeria. Typical of the Jos Plateau landscape are rocky outcrops and isolated, sparsely vegetated granitic hills of rounded bare rock of the habitat associations and population density of the Rock Firefinch have centered on the Amurum Forest

de Villiers, Marienne

45

Waste inspection tomography (WIT)  

SciTech Connect

The WIT program will provide an inspection system that offers the nuclear waste evaluator a unique combination of tools for regulatory-driven characterization of low-level waste (LLW), transuranic waste (TRU), and mixed waste drums. WIT provides nondestructive, noninvasive, and environmentally safe inspections using X-ray and gamma ray technologies, with reasonable cost and throughput. Two emission imaging techniques will be employed for characterizing materials in waste containers. The first of these is gamma emission tomography, commonly called single-photon emission computed tomography (SPECT). Rather than using an external radiation source, SPECT uses the emission of radioactive materials within the object of interest for imaging. In this case, emission from actual nuclear waste within a container will provide a three-dimensional image of the radioactive substances in the container. The second emission technique will use high-purity germanium detectors for gamma ray spectroscopy. This technique, called nondestructive assay (NDA), can identify the emitting isotopic species and strength. Work in emission tomography and assay of nuclear waste has been undertaken at Lawrence Livermore National Laboratory using a technique called Passive Tomography. Results from a process development unit are presented.

Bernardi, R.T.; Han, K.S.

1994-12-31T23:59:59.000Z

46

An integrated experimental and numerical study: Developing a reaction transport model that couples chemical reactions of mineral dissolution/precipitation with spatial and temporal flow variations in CO2/brine/rock systems  

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

Project objectives: Generate and characterize mineral dissolution/precipitation reactions in supercritical CO2/brine/rock systems under pressure-temperature-chemistry conditions resembling CO2injection into EGS. Characterize three-dimensional spatial and temporal distributions of rock structures subject to mineral dissolution/precipitation processes by X-ray tomography, SEM imaging, and Microprobe analysis.

47

Life Under Rocks Grade Level: First  

E-Print Network (OSTI)

. Procedure: Find a small and large rock (rock should be on a solid surface and not sunk in sand or muck

48

Neutrino tomography: Tevatron mapping versus the neutrino sky  

Science Journals Connector (OSTI)

... adequate reconstruction for noninvasive imaging in medicine. Geophysical densities follow from the mapping of the Radon or Fourier transform of certain neutrino projections, and not from the Volkova-Zatsepin scheme, ... problem was first addressed by Radon24 who derived what has now become known as the Radon transform. Tomography10'19'20'25 can be defined as reconstructive imaging by means of ...

Thomas L. Wilson

1984-05-03T23:59:59.000Z

49

Shotgun cartridge rock breaker  

DOE Patents (OSTI)

A rock breaker uses shotgun cartridges or other firearm ammunition as the explosive charge at the bottom of a drilled borehole. The breaker includes a heavy steel rod or bar, a gun with a firing chamber for the ammunition which screws onto the rod, a long firing pin running through a central passage in the rod, and a firing trigger mechanism at the external end of the bar which strikes the firing pin to fire the cartridge within the borehole. A tubular sleeve surround the main body of the rod and includes slits the end to allow it to expand. The rod has a conical taper at the internal end against which the end of the sleeve expands when the sleeve is forced along the rod toward the taper by a nut threaded onto the external end of the rod. As the sleeve end expands, it pushes against the borehole and holds the explosive gasses within, and also prevents the breaker from flying out of the borehole. The trigger mechanism includes a hammer with a slot and a hole for accepting a drawbar or drawpin which, when pulled by a long cord, allows the cartridge to be fired from a remote location.

Ruzzi, Peter L. (Eagan, NM); Morrell, Roger J. (Bloomington, MN)

1995-01-01T23:59:59.000Z

50

Density Log | Open Energy Information  

Open Energy Info (EERE)

Density Log Density Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Density Log Details Activities (6) Areas (6) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: provides data on the bulk density of the rock surrounding the well Stratigraphic/Structural: Stratigraphic correlation between well bores. Hydrological: Porosity of the formations loggesd can be calculated for the Density log andprovide an indication potential aquifers. Thermal: Cost Information Low-End Estimate (USD): 0.4040 centUSD 4.0e-4 kUSD 4.0e-7 MUSD 4.0e-10 TUSD / foot Median Estimate (USD): 0.6868 centUSD

51

Neutron computed tomography  

E-Print Network (OSTI)

to make the Donner Algorithms run. TABLE OF CONTEliiTS CHAPTF. . R I NEI. TRON RADIOGRAPHY . I. 1 Background . I. 2 Theory . l. 3 Neutron Beam Characterization I. 4 Image Detectors . COMPI'TED TOMOGRAPHY . Il I Background . II. 2 Notation II. 3... data which is generated by rays traveling (and being attenuated) in straight lines. However in neutron radiography, what is measured is, to most extents, the levels of neutrons which are not attenuated. Neutrons are particles. They scatter...

Russell, Clifford Marlow

2012-06-07T23:59:59.000Z

52

Post Rock | Open Energy Information  

Open Energy Info (EERE)

Rock Rock Jump to: navigation, search Name Post Rock Facility Post Rock Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Wind Capital Group Developer Wind Capital Group Energy Purchaser Westar Energy Location Ellsworth KS Coordinates 38.87269233°, -98.33059788° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.87269233,"lon":-98.33059788,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

53

GEOL 103 Writing Assignment 3. Sedimentary Rocks Name _______________________  

E-Print Network (OSTI)

.g., kaolinite), halite (rock salt), gypsum, occasionally micas (muscovite, biotite). Sed rocks can also contain

Kirby, Carl S.

54

Isotopic Analysis- Rock | Open Energy Information  

Open Energy Info (EERE)

Isotopic Analysis- Rock Isotopic Analysis- Rock Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Isotopic Analysis- Rock Details Activities (13) Areas (11) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Rock Lab Analysis Information Provided by Technique Lithology: Water rock interaction Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Isotopic Analysis- Rock: Isotopes are atoms of the same element that have different numbers of neutrons. An isotopic analysis looks at a particular isotopic element(s) in a given system, while the conditions which increase/decrease the number of neutrons are well understood and measurable.

55

Positron Emission Tomography (PET)  

DOE R&D Accomplishments (OSTI)

Positron emission tomography (PET) assesses biochemical processes in the living subject, producing images of function rather than form. Using PET, physicians are able to obtain not the anatomical information provided by other medical imaging techniques, but pictures of physiological activity. In metaphoric terms, traditional imaging methods supply a map of the body's roadways, its, anatomy; PET shows the traffic along those paths, its biochemistry. This document discusses the principles of PET, the radiopharmaceuticals in PET, PET research, clinical applications of PET, the cost of PET, training of individuals for PET, the role of the United States Department of Energy in PET, and the futures of PET.

Welch, M. J.

1990-01-00T23:59:59.000Z

56

Radial reflection diffraction tomography  

DOE Patents (OSTI)

A wave-based tomographic imaging method and apparatus based upon one or more rotating radially outward oriented transmitting and receiving elements have been developed for non-destructive evaluation. At successive angular locations at a fixed radius, a predetermined transmitting element can launch a primary field and one or more predetermined receiving elements can collect the backscattered field in a "pitch/catch" operation. A Hilbert space inverse wave (HSIW) algorithm can construct images of the received scattered energy waves using operating modes chosen for a particular application. Applications include, improved intravascular imaging, bore hole tomography, and non-destructive evaluation (NDE) of parts having existing access holes.

Lehman, Sean K.

2012-12-18T23:59:59.000Z

57

High energy neutron Computed Tomography developed  

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

objects. May 9, 2014 Neutron tomography horizontal "slice" of a tungsten and polyethylene test object containing tungsten carbide BBs. Neutron tomography horizontal "slice"...

58

Electrical Impedance Tomography Liliana Borcea  

E-Print Network (OSTI)

Electrical Impedance Tomography Liliana Borcea #3; September 3, 2002 Abstract We review theoretical and numerical studies of the inverse problem of electrical impedance tomography which seeks the electrical conductivity and permittivity inside a body, given simul- taneous measurements of electrical currents

Borcea, Liliana

59

PARKER-HEADGATE ROCK & PARKER-GILA  

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

PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas Figure 1. Project Location Project Location j PARKER-HEADGATE ROCK &...

60

Rock magnetism of remagnetized carbonate rocks: another look MIKE JACKSON* & NICHOLAS L. SWANSON-HYSELL  

E-Print Network (OSTI)

Rock magnetism of remagnetized carbonate rocks: another look MIKE JACKSON* & NICHOLAS L. SWANSON-HYSELL Institute for Rock Magnetism, Winchell School of Earth Sciences, University of Minnesota, Minnesota, US, dominantly in the super- paramagnetic and stable single-domain size range, also give rise to distinctive rock-magnetic

Swanson-Hysell, Nicholas

Note: This page contains sample records for the topic "tomography rock density" 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

Teleseismic transmission and reflection tomography  

E-Print Network (OSTI)

The aim of seismic tomography is to determine a model of Earth properties that best explain observed seismic data. In practice, the limitations placed on our observations and computational capabilities force us to make a ...

Burdick, Scott A. (Scott Anthony)

2014-01-01T23:59:59.000Z

62

Dispersivity as an oil reservoir rock characteristic  

SciTech Connect

The main objective of this research project is to establish dispersivity, {alpha}{sub d}, as an oil reservoir rock characteristic and to use this reservoir rock property to enhance crude oil recovery. A second objective is to compare the dispersion coefficient and the dispersivity of various reservoir rocks with other rock characteristics such as: porosity, permeability, capillary pressure, and relative permeability. The dispersivity of a rock was identified by measuring the physical mixing of two miscible fluids, one displacing the other in a porous medium. 119 refs., 27 figs., 12 tabs.

Menzie, D.E.; Dutta, S.

1989-12-01T23:59:59.000Z

63

Influence of rock mass fracturing on the net penetration rates of hard rock \\{TBMs\\}  

Science Journals Connector (OSTI)

Abstract Penetration rates during excavation using hard rock tunnel boring machines (TBMs) are significantly influenced by the degree of fracturing of the rock mass. In the NTNU prediction model for hard rock TBM performance and costs, the rock mass fracturing factor (ks) is used to include the influence of rock mass fractures. The rock mass fracturing factor depends on the degree of fracturing, fracture type, fracture spacing, and the angle between fracture systems and the tunnel axis. In order to validate the relationship between the degree of fracturing and the net penetration rate of hard rock TBMs, field work has been carried out, consisting of geological back-mapping and analysis of performance data from a TBM tunnel. The rock mass influence on hard rock TBM performance prediction is taken into account in the NTNU model. Different correlations between net penetration rate and the fracturing factor (ks) have been identified for a variety of ks values.

F.J. Macias; P.D. Jakobsen; Y. Seo; A. Bruland

2014-01-01T23:59:59.000Z

64

Big Bang Day : Physics Rocks  

ScienceCinema (OSTI)

Is particle physics the new rock 'n' roll? The fundamental questions about the nature of the universe that particle physics hopes to answer have attracted the attention of some very high profile and unusual fans. Alan Alda, Ben Miller, Eddie Izzard, Dara O'Briain and John Barrowman all have interests in this branch of physics. Brian Cox - CERN physicist, and former member of 90's band D:Ream, tracks down some very well known celebrity enthusiasts and takes a light-hearted look at why this subject can appeal to all of us.

None

2011-04-25T23:59:59.000Z

65

Resistivity Tomography | Open Energy Information  

Open Energy Info (EERE)

Resistivity Tomography Resistivity Tomography Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Resistivity Tomography Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Resistivity Log Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 60.986,098 centUSD 0.061 kUSD 6.098e-5 MUSD 6.098e-8 TUSD / foot Median Estimate (USD): 76.227,622 centUSD 0.0762 kUSD 7.622e-5 MUSD 7.622e-8 TUSD / foot High-End Estimate (USD): 106.7110,671 centUSD 0.107 kUSD 1.0671e-4 MUSD 1.0671e-7 TUSD / foot Time Required Low-End Estimate: 1 days0.00274 years

66

TE Connectivity Finds Answers in Tomography  

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

TE Connectivity Finds Answers in Tomography TE Connectivity Finds Answers in Tomography Print Thursday, 22 August 2013 10:50 TE Connectivity is a world leader in connectivity-the...

67

Self-Guided Quantum Tomography  

Science Journals Connector (OSTI)

We introduce a self-learning tomographic technique in which the experiment guides itself to an estimate of its own state. Self-guided quantum tomography uses measurements to directly test hypotheses in an iterative algorithm which converges to the true state. We demonstrate through simulation on many qubits that Self-guided quantum tomography is a more efficient and robust alternative to the usual paradigm of taking a large amount of informationally complete data and solving the inverse problem of postprocessed state estimation.

Christopher Ferrie

2014-11-07T23:59:59.000Z

68

Rock Energy Cooperative (Illinois) | Open Energy Information  

Open Energy Info (EERE)

Energy Cooperative (Illinois) Jump to: navigation, search Name: Rock Energy Cooperative Place: Illinois References: EIA Form EIA-861 Final Data File for 2010 - File220101 EIA...

69

Discrete Tomography: A Neural Network Approach  

E-Print Network (OSTI)

Abstract Tomography tries to reconstruct an object from a number of projections in multiple directions quality reconstructions from a limited set of projections, while avoiding image artifacts that are often present in traditional approaches. 1 Introduction Tomography, or more especially computed tomography

Kosters, Walter

70

Measurements of water vapor adsorption on the Geysers rocks  

SciTech Connect

The ORNL high temperature isopiestic apparatus was adapted for adsorption measurements. The quantity of water retained by rock samples taken from three different wells of The Geysers was measured at 150 °C and at 200 °C as a function of pressure in the range 0.00 ? p/p0 ? 0.98, where p0 is the saturated water vapor pressure. The rocks were crushed and sieved into three fractions of different grain sizes (with different specific surface areas). Both adsorption (increasing pressure) and desorption (decreasing pressure) runs were made in order to investigate the nature and extent of the hysteresis. Additionally, BET surface area analyses were performed by Porous Materials Inc. on the same rock samples using nitrogen or krypton adsorption measurements at 77 K. Specific surface areas and pore volumes were determined. These parameters are important in estimating water retention capability of a porous material. The same laboratory also determined the densities of the samples by helium pycnometry. Their results were then compared with our own density values obtained by measuring the effect of buoyancy in compressed argon. One of the goals of this project is to determine the dependence of the water retention capacity of the rocks as a function of temperature. The results show a significant dependence of the adsorption and desorption isotherms on the grain size of the sample. The increase in the amount of water retained with temperature observed previously (Shang et al., 1994a, 1994b, 1995) between 90 and 130°C for various reservoir rocks from The Geysers may be due to the contribution of slow chemical adsorption and may be dependent on the time allowed for equilibration. In contrast with the results of Shang et al. (1994a, 1994b, 1995), some closed and nearly closed hysteresis loops on the water adsorption/desorption isotherms (with closing points at p/p0 ? 0.6) were obtained in this study. In these cases the effects of activated processes were not present, and no increase in water adsorption with temperature was observed

Gruszkiewicz, Miroslaw S.; Horita, Juske; Simonson, John M.; Mesmer, Robert E.

1996-01-24T23:59:59.000Z

71

Computed tomography on small explosive parts  

SciTech Connect

We have investigated three small explosive parts for the Pantex Plant in Amarillo, Texas using computed tomography (CT). A medium resolution, fan beam system was used to test imaging capabilities for small holes drilled into one of the parts, and to identify any inhomogeneities, cracks, voids, and inclusions if present in the other two parts. This system provides volumetric imaging. Its information is qualitative in that is allows us to see interior features but it cannot provide quantitative attenuation data. A second part of the investigation was to perform effective atomic number computed tomography on the parts using energy dispersive spectroscopy methods. We wanted to experimentally identify the {open_quotes}average{close_quotes} chemical composition of the materials in the explosive and its shell and to detect any possible inhomogeneities in composition. A single beam, nuclear spectroscopy based system was used for this work. The radiation source was a silver anode x-ray tube. By measuring x-ray attenuation at specific energies (characteristic lines and narrow bands of continuum) we are able to quantitatively determine linear attenuation coefficients. By using ratios of such measurements, density cancels out and we effectively have ratios of mass attenuation coefficients. Through a look-up scheme of mass attenuation coefficients for different elements, we can determine the weighted average chemical composition, as averaged by x-ray attenuation. We call this averaged composition the effective atomic number ({open_quotes}Z{sub eff}{close_quotes}). We thereby obtain cross sectional images of a parameter related to the averaged chemistry of the object. Such images and the underlying data can reveal, for instance, segregation of explosive and binder.

Ryon, R.W.

1994-05-01T23:59:59.000Z

72

Eagle Rock Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

Eagle Rock Geothermal Facility Eagle Rock Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Eagle Rock Geothermal Facility General Information Name Eagle Rock Geothermal Facility Facility Eagle Rock Sector Geothermal energy Location Information Location The Geysers, California Coordinates 38.826770222484°, -122.80002593994° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.826770222484,"lon":-122.80002593994,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

73

Definition: Rock Sampling | Open Energy Information  

Open Energy Info (EERE)

Sampling Sampling Jump to: navigation, search Dictionary.png Rock Sampling Systematic rock sampling can be used to characterize a geothermal reservoir. The physical and chemical properties of rock samples provide important information for determining whether a power generation or heat utilization facility can be developed. Some general rock properties can be measured by visual inspection, but detailed properties require laboratory techniques. View on Wikipedia Wikipedia Definition A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the substance, for example sediment or rock, with a hollow steel tube called a core drill. The hole made for the core sample is called the "core hole". A variety of core samplers exist to sample

74

Transport-and diffusion-based optical tomography in small domains: a comparative study  

E-Print Network (OSTI)

reconstructions based on the radiative transport and diffusion equations in optical tomography for media of small that the propaga- tion of near-infrared light in tissues is best modeled by the radiative transport equation (RTE the transport equation by its diffusion approximation, which models the spa- tial density of photons

Bal, Guillaume

75

Degradation of Li/S Battery Electrodes Studied Using X-ray Phase Contrast Tomography  

E-Print Network (OSTI)

the Li-ion battery market. This can be explained by their high energy density, high operating voltage1 Degradation of Li/S Battery Electrodes Studied Using X-ray Phase Contrast Tomography L. Zielkea. Zengerlea,f and S. Thielea,g Lithium/sulphur batteries are promising candidates for future energy storage

Schmidt, Volker

76

Slick Rock Archived Soil & Groundwater Master Reports | Department...  

Office of Environmental Management (EM)

Soil & Groundwater Master Reports Slick Rock - Old North Continent Slick Rock - Union Carbide More Documents & Publications South Valley Archived Soil & Groundwater Master Reports...

77

Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Details Activities (5) Areas (2) Regions (0) Abstract: Two hot dry rock (HDR) geothermal energy reservoirs have been created by hydraulic fracturing of Precambrian granitic rock between two wells on the west flank of the Valles Caldera in the Jemez Mountains of northern New Mexico. Heat is extracted by injecting water into one well,

78

Rock of Ages | Open Energy Information  

Open Energy Info (EERE)

of Ages of Ages Jump to: navigation, search Name Rock of Ages Facility Rock of Ages Sector Wind energy Facility Type Small Scale Wind Facility Status In Service Owner Rock of Ages Energy Purchaser Rock of Ages Location Graniteville VT Coordinates 44.14668574°, -72.48180896° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.14668574,"lon":-72.48180896,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

79

Definition: Isotopic Analysis- Rock | Open Energy Information  

Open Energy Info (EERE)

Isotopic Analysis- Rock Isotopic Analysis- Rock Jump to: navigation, search Dictionary.png Isotopic Analysis- Rock Isotopes are atoms of the same element that have different numbers of neutrons. An isotopic analysis looks at a particular isotopic element(s) in a given system, while the conditions which increase/decrease the number of neutrons are well understood and measurable.[1] View on Wikipedia Wikipedia Definition References ↑ http://wwwrcamnl.wr.usgs.gov/isoig/isopubs/itchch2.html Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Isotopic_Analysis-_Rock&oldid=687702" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties

80

Thermophysical properties of the Po Basin rocks  

Science Journals Connector (OSTI)

......7 per cent. 4.2.2 Anisotropic rocks Anisotropy of shales, silty shales and siltstones...dolomites). Horizons of shales, silty shales and siltstones are present...the presence of thermally anisotropic sheet silicates, note that......

V. Pasquale; G. Gola; P. Chiozzi; M. Verdoya

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Winner: Hot Rocks | Department of Energy  

Energy Savers (EERE)

a catch. Only a couple of EGS projects have ever produced power, and those are in Germany and France, where the rock is considerably more pliant than Australia's granite...

82

Imaging and sensing based on muon tomography  

DOE Patents (OSTI)

Techniques, apparatus and systems for detecting particles such as muons for imaging applications. Subtraction techniques are described to enhance the processing of the muon tomography data.

Morris, Christopher L; Saunders, Alexander; Sossong, Michael James; Schultz, Larry Joe; Green, J. Andrew; Borozdin, Konstantin N; Hengartner, Nicolas W; Smith, Richard A; Colthart, James M; Klugh, David C; Scoggins, Gary E; Vineyard, David C

2012-10-16T23:59:59.000Z

83

Software-defined Radio based Wireless Tomography: Experimental Demonstration and  

E-Print Network (OSTI)

1 Software-defined Radio based Wireless Tomography: Experimental Demonstration and Verification presents an experimental demonstration of Software-Defined Radio (SDR) based wireless tomography us- ing follows our vision and previous theoretical study of wireless tomography which combines wireless

Qiu, Robert Caiming

84

Phenotyping transgenic embryonic murine hearts using optical coherence tomography  

E-Print Network (OSTI)

Phenotyping transgenic embryonic murine hearts using optical coherence tomography Michael W optical coherence tomography (OCT) to characterize the morphological phenotype of embryonic murine hearts the etiology of heart defects. Optical coherence tomography (OCT)6,7 measures coherently gated backreflected

85

Properties of Some Integral Transforms Arising in Tomography  

E-Print Network (OSTI)

This dissertation deals with several types of imaging: radio tomography, single scattering optical tomography, photoacoustic tomography, and Compton camera imaging. Each of these tomographic techniques leads to a Radon-type transform...

Moon, Sunghwan

2013-10-11T23:59:59.000Z

86

Computed Tomography software and standards  

SciTech Connect

This document establishes the software design, nomenclature, and conventions for industrial Computed Tomography (CT) used in the Nondestructive Evaluation Section at Lawrence Livermore National Laboratory. It is mainly a users guide to the technical use of the CT computer codes, but also presents a proposed standard for describing CT experiments and reconstructions. Each part of this document specifies different aspects of the CT software organization. A set of tables at the end describes the CT parameters of interest in our project. 4 refs., 6 figs., 1 tab.

Azevedo, S.G.; Martz, H.E.; Skeate, M.F.; Schneberk, D.J.; Roberson, G.P.

1990-02-20T23:59:59.000Z

87

Contribution of atom-probe tomography to a better understanding...  

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

atom-probe tomography to a better understanding of glass alteration mechanisms: application to a nuclear glass Contribution of atom-probe tomography to a better understanding of...

88

Resistivity Tomography At Crump's Hot Springs Area (DOE GTP)...  

Open Energy Info (EERE)

Tomography At Crump's Hot Springs Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Resistivity Tomography At Crump's Hot Springs...

89

Understanding Atom Probe Tomography of Oxide-Supported Metal...  

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

Atom Probe Tomography of Oxide-Supported Metal Nanoparticles by Correlation with Atomic Resolution Electron Understanding Atom Probe Tomography of Oxide-Supported Metal...

90

Using X-Ray Computed Tomography in Pore Structure Characterization...  

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

Using X-Ray Computed Tomography in Pore Structure Characterization for a Berea Sandstone: Resolution Effect. Using X-Ray Computed Tomography in Pore Structure Characterization for...

91

ALGEBRAIC ASPECTS OF EMISSION TOMOGRAPHY WITH ABSORPTION  

E-Print Network (OSTI)

ALGEBRAIC ASPECTS OF EMISSION TOMOGRAPHY WITH ABSORPTION L. Hajdu and R. Tijdeman Abstract of emission tomography with absorption, con- sider a ray (such as light or X-ray) transmitting through #1; e #22;x ; where #22; #21; 0 denotes the absorption coeÃ?cient of the material, and x is the length

Tijdeman, Robert

92

Fast Globally Convergent Reconstruction in Emission Tomography  

E-Print Network (OSTI)

considerable speedup by using only a subset of the projection data per sub- iteration. However, OSEM1 Fast Globally Convergent Reconstruction in Emission Tomography Using COSEM, an Incremental EM globally convergent incremental EM algorithms for reconstruction in emission tomography, COSEM- ML

Rangarajan, Anand

93

Improving Electrical Resistivity Tomography for Characterization of  

E-Print Network (OSTI)

Improving Electrical Resistivity Tomography for Characterization of Non-point Source Contaminants runoff on Arizona's potable water. Electrical resistivity tomography (ERT) shows promise as a noninvasive on the environment. Urban and agricultural runoff are often associated with an increase in water electrical

Fay, Noah

94

Seismic-Scale Rock Physics of Methane Hydrate  

SciTech Connect

We quantify natural methane hydrate reservoirs by generating synthetic seismic traces and comparing them to real seismic data: if the synthetic matches the observed data, then the reservoir properties and conditions used in synthetic modeling might be the same as the actual, in-situ reservoir conditions. This approach is model-based: it uses rock physics equations that link the porosity and mineralogy of the host sediment, pressure, and hydrate saturation, and the resulting elastic-wave velocity and density. One result of such seismic forward modeling is a catalogue of seismic reflections of methane hydrate which can serve as a field guide to hydrate identification from real seismic data. We verify this approach using field data from known hydrate deposits.

Amos Nur

2009-01-08T23:59:59.000Z

95

Using seismic tomography to characterize fracture systems induced by hydraulic fracturing  

SciTech Connect

Microearthquakes induced by hydraulic fracturing have been studied by many investigators to characterize fracture systems created by the fracturing process and to better understand the locations of energy resources in the earth`s subsurface. The pattern of the locations often contains a great deal of information about the fracture system stimulated during the hydraulic fracturing. Seismic tomography has found applications in many areas for characterizing the subsurface of the earth. It is well known that fractures in rock influence both the P and S velocities of the rock. The influence of the fractures is a function of the geometry of the fractures, the apertures and number of fractures, and the presence of fluids in the fractures. In addition, the temporal evolution of the created fracture system can be inferred from the temporal changes in seismic velocity and the pattern of microearthquake locations. Seismic tomography has been used to infer the spatial location of a fracture system in a reservoir that was created by hydraulic fracturing.

Fehler, M.; Rutledge, J.

1995-01-01T23:59:59.000Z

96

Rock-brine chemical interactions. Final report  

SciTech Connect

The results of experimental interaction of powdered volcanic rock with aqueous solutions are presented at temperatures from 200 to 400/sup 0/C, 500 to 1000 bars fluid pressure, with reaction durations of approximately 30 days under controlled laboratory conditions. The aim of this research is to develop data on the kinetics and equilibria of rock solution interactions that will provide insight into the complex geochemical processes attending geothermal reservoir development, stimulation, and reinjection. The research was done in the Stanford Hydrothermal Lab using gold cell equipment of the Dickson design. This equipment inverts the solution rock mixture several times a minute to ensure thorough mixing. Solution samples were periodically withdrawn without interruption of the experimental conditions. The data from these experiments suggests a path dependent series of reactions by which geothermal fluids might evolve from meteoric or magmatic sources.

Not Available

1982-02-01T23:59:59.000Z

97

Category:Little Rock, AR | Open Energy Information  

Open Energy Info (EERE)

AR AR Jump to: navigation, search Go Back to PV Economics By Location Media in category "Little Rock, AR" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Little Rock AR Entergy Arkansas Inc.png SVFullServiceRestauran... 71 KB SVHospital Little Rock AR Entergy Arkansas Inc.png SVHospital Little Rock... 69 KB SVLargeHotel Little Rock AR Entergy Arkansas Inc.png SVLargeHotel Little Ro... 70 KB SVLargeOffice Little Rock AR Entergy Arkansas Inc.png SVLargeOffice Little R... 71 KB SVMediumOffice Little Rock AR Entergy Arkansas Inc.png SVMediumOffice Little ... 68 KB SVMidriseApartment Little Rock AR Entergy Arkansas Inc.png SVMidriseApartment Lit... 70 KB SVOutPatient Little Rock AR Entergy Arkansas Inc.png SVOutPatient Little Ro...

98

Lorentz Force Electrical Impedance Tomography  

E-Print Network (OSTI)

This article describes a method called Lorentz Force Electrical Impedance Tomography. The electrical conductivity of biological tissues can be measured through their sonication in a magnetic field: the vibration of the tissues inside the field induces an electrical current by Lorentz force. This current, detected by electrodes placed around the sample, is proportional to the ultrasonic pressure, to the strength of the magnetic field and to the electrical conductivity gradient along the acoustic axis. By focusing at different places inside the sample, a map of the electrical conductivity gradient can be established. In this study experiments were conducted on a gelatin phantom and on a beef sample, successively placed in a 300 mT magnetic field and sonicated with an ultrasonic transducer focused at 21 cm emitting 500 kHz bursts. Although all interfaces are not visible, in this exploratory study a good correlation is observed between the electrical conductivity image and the ultrasonic image. This method offers...

Grasland-Mongrain, Pol; Chapelon, Jean-Yves; Lafon, Cyril

2014-01-01T23:59:59.000Z

99

Positron emission tomography wrist detector  

DOE Patents (OSTI)

A method of serially transferring annihilation information in a compact positron emission tomography (PET) scanner includes generating a time signal representing a time-of-occurrence of an annihilation event, generating an address signal representing a channel detecting the annihilation event, and generating a channel signal including the time and address signals. The method also includes generating a composite signal including the channel signal and another similarly generated channel signal concerning another annihilation event. An apparatus that serially transfers annihilation information includes a time signal generator, address signal generator, channel signal generator, and composite signal generator. The time signal is asynchronous and the address signal is synchronous to a clock signal. A PET scanner includes a scintillation array, detection array, front-end array, and a serial encoder. The serial encoders include the time signal generator, address signal generator, channel signal generator, and composite signal generator.

Schlyer, David J. (Bellport, NY); O'Connor, Paul (Bellport, NY); Woody, Craig (Setauket, NY); Junnarkar, Sachin Shrirang (Sound Beach, NY); Radeka, Veljko (Bellport, NY); Vaska, Paul (Sound Beach, NY); Pratte, Jean-Francois (Stony Brook, NY)

2006-08-15T23:59:59.000Z

100

Collimator-free photon tomography  

DOE Patents (OSTI)

A method of uncollimated single photon emission computed tomography includes administering a radioisotope to a patient for producing gamma ray photons from a source inside the patient. Emissivity of the photons is measured externally of the patient with an uncollimated gamma camera at a plurality of measurement positions surrounding the patient for obtaining corresponding energy spectrums thereat. Photon emissivity at the plurality of measurement positions is predicted using an initial prediction of an image of the source. The predicted and measured photon emissivities are compared to obtain differences therebetween. Prediction and comparison is iterated by updating the image prediction until the differences are below a threshold for obtaining a final prediction of the source image. 6 figs.

Dilmanian, F.A.; Barbour, R.L.

1998-10-06T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Collimator-free photon tomography  

DOE Patents (OSTI)

A method of uncollimated single photon emission computed tomography includes administering a radioisotope to a patient for producing gamma ray photons from a source inside the patient. Emissivity of the photons is measured externally of the patient with an uncollimated gamma camera at a plurality of measurement positions surrounding the patient for obtaining corresponding energy spectrums thereat. Photon emissivity at the plurality of measurement positions is predicted using an initial prediction of an image of the source. The predicted and measured photon emissivities are compared to obtain differences therebetween. Prediction and comparison is iterated by updating the image prediction until the differences are below a threshold for obtaining a final prediction of the source image.

Dilmanian, F. Avraham (Yaphank, NY); Barbour, Randall L. (Westbury, NY)

1998-10-06T23:59:59.000Z

102

Axial Tomography from Digitized Real Time Radiography  

DOE R&D Accomplishments (OSTI)

Axial tomography from digitized real time radiographs provides a useful tool for industrial radiography and tomography. The components of this system are: x-ray source, image intensifier, video camera, video line extractor and digitizer, data storage and reconstruction computers. With this system it is possible to view a two dimensional x-ray image in real time at each angle of rotation and select the tomography plane of interest by choosing which video line to digitize. The digitization of a video line requires less than a second making data acquisition relatively short. Further improvements on this system are planned and initial results are reported.

Zolnay, A. S.; McDonald, W. M.; Doupont, P. A.; McKinney, R. L.; Lee, M. M.

1985-01-18T23:59:59.000Z

103

Hysteresis, Discrete Memory, and Nonlinear Wave Propagation in Rock: A New Paradigm  

Science Journals Connector (OSTI)

The structural elements in a rock are characterized by their density in Preisach-Mayergoyz space (PM space). This density is found for a Berea sandstone from stress-strain data and used to study the response of the sandstone to elaborate pressure protocols. Hysteresis with discrete memory, in agreement with experiment, is found. The relationship between strain, quasistatic modulus, and dynamic modulus is established. Nonlinear wave propagation, the production of copious harmonics, and nonlinear attenuation are demonstrated. PM space is shown to be the central construct in a new paradigm for the description of the elastic behavior of consolidated materials.

R. A. Guyer; K. R. McCall; G. N. Boitnott

1995-04-24T23:59:59.000Z

104

Laboratory Density Functionals  

E-Print Network (OSTI)

We compare several definitions of the density of a self-bound system, such as a nucleus, in relation with its center-of-mass zero-point motion. A trivial deconvolution relates the internal density to the density defined in the laboratory frame. This result is useful for the practical definition of density functionals.

B. G. Giraud

2007-07-26T23:59:59.000Z

105

Rim Rock Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Rim Rock Wind Farm Rim Rock Wind Farm Jump to: navigation, search Name Rim Rock Wind Farm Facility Rim Rock Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NaturEner Developer NaturEner Energy Purchaser San Diego Gas & Electric Location Glacier and Toole Counties MT Coordinates 48.779564°, -112.061291° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.779564,"lon":-112.061291,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

106

Storage capacity in hot dry rock reservoirs  

DOE Patents (OSTI)

A method of extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid

Brown, Donald W. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

107

Hot-dry-rock geothermal resource 1980  

SciTech Connect

The work performed on hot dry rock (HDR) geothermal resource evaluation, site characterization, and geophysical exploration techniques is summarized. The work was done by region (Far West, Pacific Northwest, Southwest, Rocky Mountain States, Midcontinent, and Eastern) and limited to the conterminous US.

Heiken, G.; Goff, F.; Cremer, G. (ed.)

1982-04-01T23:59:59.000Z

108

E-Print Network 3.0 - archean metavolcanic rocks Sample Search...  

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

(Krner, 1985). However, the tectonic setting and age of metavolcanic rocks in Egypt are poorly... metavolcanic rocks. Metavolcanic rocks in Egypt were described by...

109

Practical Characterization of Quantum Devices without Tomography  

Science Journals Connector (OSTI)

Quantum tomography is the main method used to assess the quality of quantum information processing devices. However, the amount of resources needed for quantum tomography is exponential in the device size. Part of the problem is that tomography generates much more information than is usually sought. Taking a more targeted approach, we develop schemes that enable (i) estimating the fidelity of an experiment to a theoretical ideal description, (ii) learning which description within a reduced subset best matches the experimental data. Both these approaches yield a significant reduction in resources compared to tomography. In particular, we demonstrate that fidelity can be estimated from a number of simple experiments that is independent of the system size, removing an important roadblock for the experimental study of larger quantum information processing units.

Marcus P. da Silva; Olivier Landon-Cardinal; David Poulin

2011-11-16T23:59:59.000Z

110

Phase-Conjugate Optical Coherence Tomography  

E-Print Network (OSTI)

We demonstrate a new type of optical coherence tomography using only classical resources to achieve results that are typically associated with quantum-enhanced metrology: factor-of-two axial resolution enhancement and ...

Shapiro, Jeffrey H.

111

Positron Emission Tomography Physics, Instrumentation, Data Analysis  

E-Print Network (OSTI)

1 Positron Emission Tomography Physics, Instrumentation, Data Analysis Carl K. Hoh, MD Department fast computer Filtered Back Projection Iterative Reconstruction PET Image Reconstruction #12 PET Scanner Design · Smaller individual crystal size = better spatial resolution · Physical limit

Liu, Thomas T.

112

Does roughening of rock-fluid-rock interfaces emerge from a stress-induced instability?  

Science Journals Connector (OSTI)

Non-planar solid-fluid-solid interfaces under stress are very common in many industrial and natural materials. For example, in the Earth’s crust, many rough and wavy interfaces can be observed in rocks in a wi...

E. Bonnetier; C. Misbah; F. Renard; R. Toussaint…

2009-01-01T23:59:59.000Z

113

A Comprehensive Study Of Fracture Patterns And Densities In The Geysers  

Open Energy Info (EERE)

Study Of Fracture Patterns And Densities In The Geysers Study Of Fracture Patterns And Densities In The Geysers Geothermal Reservoir Using Microearthquake Shear-Wave Splitting Tomography Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: A Comprehensive Study Of Fracture Patterns And Densities In The Geysers Geothermal Reservoir Using Microearthquake Shear-Wave Splitting Tomography Details Activities (1) Areas (1) Regions (0) Abstract: In this project we developed a method for using seismic S-wave data to map the patterns and densities of sub-surface fractures in the NW Geysers Geothermal Field/ (1) This project adds to both the general methods needed to characterize the geothermal production fractures that supply steam for power generation and to the specific knowledge of these in the Geysers area. (2)By locating zones of high fracture density it will be

114

3D Imaging with Holographic Tomography  

Science Journals Connector (OSTI)

There are two main types of tomography that enable the 3D internal structures of objects to be reconstructed from scattered data. The commonly known computerized tomography (CT) give good results in the x?ray wavelength range where the filtered back?projection theorem and Radon transform can be used. These techniques rely on the Fourier projection?slice theorem where rays are considered to propagate straight through the object. Another type of tomography called ‘diffraction tomography’ applies in applications in optics and acoustics where diffraction and scattering effects must be taken into account. The latter proves to be a more difficult problem as light no longer travels straight through the sample. Holographic tomography is a popular way of performing diffraction tomography and there has been active experimental research on reconstructing complex refractive index data using this approach recently. However there are two distinct ways of doing tomography: either by rotation of the object or by rotation of the illumination while fixing the detector. The difference between these two setups is intuitive but needs to be quantified. From Fourier optics and information transformation point of view we use 3D transfer function analysis to quantitatively describe how spatial frequencies of the object are mapped to the Fourier domain. We first employ a paraxial treatment by calculating the Fourier transform of the defocused OTF. The shape of the calculated 3D CTF for tomography by scanning the illumination in one direction only takes on a form that we might call a ’peanut ’ compared to the case of object rotation where a diablo is formed the peanut exhibiting significant differences and non?isotropy. In particular there is a line singularity along one transverse direction. Under high numerical aperture conditions the paraxial treatment is not accurate and so we make use of 3D analytical geometry to calculate the behaviour in the non?paraxial case. This time we obtain a similar peanut but without the line singularity.

Colin J. R. Sheppard; Shan Shan Kou

2010-01-01T23:59:59.000Z

115

Modeling of crack initiation, propagation and coalescence in rocks  

E-Print Network (OSTI)

Natural or artificial fracturing of rock plays a very important role in geologic processes and for engineered structures in and on rock. Fracturing is associated with crack initiation, propagation and coalescence, which ...

Gonçalves da Silva, Bruno Miguel

2009-01-01T23:59:59.000Z

116

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

117

Reference spectrum extraction and fixed-pattern noise removal in optical coherence tomography  

E-Print Network (OSTI)

OCIS codes: (110.4500) Optical coherence tomography; (170.4500) Optical coherence tomography; (100.2000) Digitalvs. time domain optical coherence tomography,” Opt. Express

Moon, Sucbei; Lee, Sang-Won; Chen, Zhongping

2010-01-01T23:59:59.000Z

118

In vivo three-dimensional microelectromechanical endoscopic swept source optical coherence tomography  

E-Print Network (OSTI)

with endoscopic optical coherence tomography”, Opt. Express,G. Fujimoto, "Optical coherence tomography," Science, 254,endoscope for optical coherence tomography”,Opt. Lett. 21,

Su, Jianping; Zhang, Jun; Yu, Linfeng; Chen, Zhongping

2007-01-01T23:59:59.000Z

119

VancouverParksville White RockNew Westminster  

E-Print Network (OSTI)

Courtenay VancouverParksville Abbotsford White RockNew Westminster Squamish Chilliwack Port McNeill Powell

120

Rock mechanics activities at the Waste Isolation Pilot Plant  

SciTech Connect

The application of rock mechanics at nuclear waste repositories is a true multidisciplinary effort. A description and historical summary of the Waste Isolation Pilot Plant (WIPP) is presented. Rock mechanics programs at the WIPP are outlined, and the current rock mechanics modeling philosophy of the Westinghouse Waste Isolation Division is discussed.

Francke, C. [Westinghouse Electric Corp., Carlsbad, NM (United States); Saeb, S. [International Technology Corp., Albuquerque, NM (United States)

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Understanding Through-Composition in Post-Rock, Math-Metal, and other Post-Millennial Rock Genres  

E-Print Network (OSTI)

Since the dawn of experimental rock’s second coming in the new millennium, experimental artists have begun distancing themselves from Top-40 artists through formal structures that eschew recapitulatory verse/chorus ...

Osborn, Brad

2011-01-01T23:59:59.000Z

122

3-D Density Model Of Mt Etna Volcano (Southern Italy) | Open Energy  

Open Energy Info (EERE)

3-D Density Model Of Mt Etna Volcano (Southern Italy) 3-D Density Model Of Mt Etna Volcano (Southern Italy) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 3-D Density Model Of Mt Etna Volcano (Southern Italy) Details Activities (0) Areas (0) Regions (0) Abstract: A detailed density model of Mt. Etna and its surrounding areas has been evaluated using a 3-D inversion of the gravimetric data acquired in the 1980's. Several high-density and low-density bodies are found, penetrating from shallow depths as far down as 12 km bsl. A positive correlation (in terms of location, extent, density, and velocity) is established between several anomalies of the density model and features identified in previously published seismic tomographies. A prominent high-density body extending down to 7 km bsl is recognized in the southern

123

Economical standard quantum process tomography  

E-Print Network (OSTI)

Recently, Bendersky \\emph{et al.} developed a method to complete the task of characterizing an arbitrary $\\chi$ matrix element in a scalable way, Phys. Rev. Lett. Vol. \\textbf{100}, 190403(2008), where an auxiliary system was needed. In present work, we shall show that the same task can also be completed within the scheme of standard quantum process tomography (SQPT) where there is no requirement for ancilla. Our method depends on two observations: With the elaborately chosen operators basis, the SQPT may have an economical form where a single run of experiment, in which we measure the expectation value of a chosen operator in the outport of the quantum channel with a known input, is sufficient to characterize a selected $\\chi$ matrix element; With the progress recently achieved in quantum entanglement detection, we also find that the number of the experimental settings to realize the experiment for the selected $\\chi$ matrix element does not exceed 2N for the N-qubits system. For practice, our scheme can be applied for the cases where the controlled two-body interaction is neither available nor desirable.

Xiaohua Wu; Ke Xu

2010-11-30T23:59:59.000Z

124

Symmetric Density Functionals  

E-Print Network (OSTI)

Variations in distinct restricted spaces of wave functions generate distinct density functionals. In particular, angular momentum projected Slater determinants define a new density functional, compatible simultaneously with angular momentum quantum number and mean field descriptions.

B. G. Giraud

2005-07-13T23:59:59.000Z

125

Density measurements Viscosity measurements  

E-Print Network (OSTI)

Density measurements Viscosity measurements Temperature measurements Pressure measurements Flow rate measurements Velocity measurements Sensors How to measure fluid flow properties ? Am´elie Danlos Ravelet Experimental methods for fluid flows: an introduction #12;Density measurements Viscosity

Ravelet, Florent

126

Dark energy and matter evolution from lensing tomography  

Science Journals Connector (OSTI)

Reconstructed from lensing tomography, the evolution of the dark matter density field in the well-understood linear regime can provide model-independent constraints on the growth function of structure and the evolution of the dark energy density. We examine this potential in the context that high-redshift cosmology has in the future been fixed by cosmic microwave background measurements. We construct sharp tests for the existence of multiple dark matter components or a dark energy component that is not a cosmological constant. These functional constraints can be transformed into physically motivated model parameters. From the growth function, the fraction of the dark matter in a smooth component, such as a light neutrino, may be constrained to a statistical precision of ?(f)?0.0006fsky-1/2 by a survey covering a fraction of sky fsky with a redshift resolution ?z=0.1. For the dark energy, a parametrization in terms of the present energy density ?DE, equation of state w, and its redshift derivative w?, the constraints correspond to ?(w)=0.009fsky-1/2 and a degenerate combination of the other two parameters. For a fixed ?DE, ?(w?)=0.046fsky-1/2.

Wayne Hu

2002-10-30T23:59:59.000Z

127

Rock River Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Wind Farm Wind Farm Jump to: navigation, search Name Rock River Wind Farm Facility Rock River Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Shell Wind Energy Developer SeaWest Energy Purchaser PacifiCorp Location Arlington and Carbon Counties WY Coordinates 41.6996°, -107.003° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.6996,"lon":-107.003,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

128

A Phased Array Approach to Rock Blasting  

SciTech Connect

A series of laboratory-scale simultaneous two-hole shots was performed in a rock simulant (mortar) to record the shock wave interference patterns produced in the material. The purpose of the project as a whole was to evaluate the usefulness of phased array techniques of blast design, using new high-precision delay technology. Despite high-speed photography, however, we were unable to detect the passage of the shock waves through the samples to determine how well they matched the expected interaction geometry. The follow-up mine-scale tests were therefore not conducted. Nevertheless, pattern analysis of the vectors that would be formed by positive interference of the shockwaves from multiple charges in an ideal continuous, homogeneous, isotropic medium indicate the potential for powerful control of blast design, given precise characterization of the target rock mass.

Leslie Gertsch; Jason Baird

2006-07-01T23:59:59.000Z

129

Gage for measuring displacements in rock samples  

DOE Patents (OSTI)

A gage for measuring diametral displacement within a rock sample for use in a rock mechanics laboratory and in the field, comprises a support ring housing a linear variable differential transformer, a mounting screw, and a leaf spring. The mounting screw is adjustable and defines a first point of contact with the rock sample. The leaf spring has opposite ends fixed to the inner periphery of the mounting ring. An intermediate portion of the leaf spring projecting radially inward from the ring is formed with a dimple defining a second point of contact with the sample. The first and second points of contact are diametrically opposed to each other. The LVDT is mounted in the ring with its axis parallel to the line of measurement and its core rod received in the dimple of the leaf spring. Any change in the length of the line between the first and second support points is directly communicated to the LVDT. The leaf spring is rigid to completely support lateral forces so that the LVDT is free of all load for improved precision.

Holcomb, David J. (Albuquerque, NM); McNamee, Michael J. (Albuquerque, NM)

1986-01-01T23:59:59.000Z

130

TWO-DIMENSIONAL MODELING OF LASER SPALLATION DRILLING OF ROCKS  

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

DIMENSIONAL MODELING OF LASER SPALLATION DRILLING OF ROCKS DIMENSIONAL MODELING OF LASER SPALLATION DRILLING OF ROCKS P532 Zhiyue Xu, Yuichiro Yamashita 1 , and Claude B. Reed Argonne National Laboratory, Argonne, IL 60439, USA 1 Now with Kyushu University, Japan Abstract High power lasers can weaken, spall, melt and vaporize natural earth materials with thermal spallation being the most energy efficient rock removal mechanism. Laser rock spallation is a very complex phenomenon that depends on many factors. Computer numerical modeling would provides great tool to understand the fundamental of this complex phenomenon, which is crucial to the success of its applications. Complexity of modeling laser rock spallation is due to: 1) rock is a porous media, to which traditional theories of heat transfer and rock mechanics can not be directly

131

Positron Emission Tomography (PET) and Positron Scanning  

Office of Scientific and Technical Information (OSTI)

DOE R&D Accomplishments DOE R&D Accomplishments Search All Database Web Pages for Go The Basics Home About What's New FAQ Contact Us Laureates Nobel Laureates Fermi Laureates Nobel Physicists Nobel Chemists Medicine Nobels Explore Insights SC Stories Snapshots R&D Nuggets Database Search Browse Reports Database Help Finding Aids Site Map A - Z Index Menu Synopsis Blog Archive QR Code RSS Archive Tag Cloud Videos Widget XML Bookmark and Share Positron Emission Tomography (PET) and Positron Scanning Resources with Additional Information Positron Emission Tomography (PET) Scanner Courtesy Lawrence Berkeley National Laboratory 'Positron Emission Tomography ... [is a medical imaging technique that] can track chemical reactions in living tissues and merges chemistry with biological imaging. Its strength has been in studies of the brain where there has been significant progress in investigations of drug addiction, aging, mental illness, and neurogenic disorders. Positron Emission Tomography (PET) had its genesis in hot-atom chemical research supported by the Chemical Sciences Division of the Office of Basic Energy Sciences. Through this research it was learned, over many years, how to prepare short-lived positron emitters such as 18F whose half-life is 110 minutes. In 1975, the molecule [18F]fluorodeoxyglucose was successfully synthesized at Brookhaven National Laboratory (BNL) and set the stage for Positron Emission Tomography of the human brain.'

132

ROCK PROPERTIES MODEL ANALYSIS MODEL REPORT  

SciTech Connect

The purpose of this Analysis and Model Report (AMR) is to document Rock Properties Model (RPM) 3.1 with regard to input data, model methods, assumptions, uncertainties and limitations of model results, and qualification status of the model. The report also documents the differences between the current and previous versions and validation of the model. The rock properties models are intended principally for use as input to numerical physical-process modeling, such as of ground-water flow and/or radionuclide transport. The constraints, caveats, and limitations associated with this model are discussed in the appropriate text sections that follow. This work was conducted in accordance with the following planning documents: WA-0344, ''3-D Rock Properties Modeling for FY 1998'' (SNL 1997, WA-0358), ''3-D Rock Properties Modeling for FY 1999'' (SNL 1999), and the technical development plan, Rock Properties Model Version 3.1, (CRWMS M&O 1999c). The Interim Change Notice (ICNs), ICN 02 and ICN 03, of this AMR were prepared as part of activities being conducted under the Technical Work Plan, TWP-NBS-GS-000003, ''Technical Work Plan for the Integrated Site Model, Process Model Report, Revision 01'' (CRWMS M&O 2000b). The purpose of ICN 03 is to record changes in data input status due to data qualification and verification activities. These work plans describe the scope, objectives, tasks, methodology, and implementing procedures for model construction. The constraints, caveats, and limitations associated with this model are discussed in the appropriate text sections that follow. The work scope for this activity consists of the following: (1) Conversion of the input data (laboratory measured porosity data, x-ray diffraction mineralogy, petrophysical calculations of bound water, and petrophysical calculations of porosity) for each borehole into stratigraphic coordinates; (2) Re-sampling and merging of data sets; (3) Development of geostatistical simulations of porosity; (4) Generation of derivative property models via linear coregionalization with porosity; (5) Post-processing of the simulated models to impart desired secondary geologic attributes and to create summary and uncertainty models; and (6) Conversion of the models into real-world coordinates. The conversion to real world coordinates is performed as part of the integration of the RPM into the Integrated Site Model (ISM) 3.1; this activity is not part of the current analysis. The ISM provides a consistent volumetric portrayal of the rock layers, rock properties, and mineralogy of the Yucca Mountain site and consists of three components: (1) Geologic Framework Model (GFM); (2) RPM, which is the subject of this AMR; and (3) Mineralogic Model. The interrelationship of the three components of the ISM and their interface with downstream uses are illustrated in Figure 1. Figure 2 shows the geographic boundaries of the RPM and other component models of the ISM.

Clinton Lum

2002-02-04T23:59:59.000Z

133

TE Connectivity Finds Answers in Tomography  

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

TE Connectivity Finds Answers in TE Connectivity Finds Answers in Tomography TE Connectivity Finds Answers in Tomography Print Thursday, 22 August 2013 10:50 TE Connectivity is a world leader in connectivity-the $13 billion global company designs and manufactures more than 500,000 different electronic connectivity products for the automotive, energy, industrial, broadband communications, consumer device, healthcare, aerospace, and defense industries. TE Connectivity has a long-standing commitment to innovation and engineering excellence. Their products help address challenges arising from companies' need for energy efficiency, always-on communications, and ever-increasing productivity. Recently, a team led by TE's senior manager of materials development, Dr. Jerzy Gazda (at left), has been investigating how ALS tomography capabilities can help the company develop more efficient connectors.

134

Multilevel bioluminescence tomography based on radiative transfer equation  

E-Print Network (OSTI)

, "A fast forward solver of radiative transfer equation," Transport Theory and Statistical Physics 38Multilevel bioluminescence tomography based on radiative transfer equation Part 1: l1 approach for bioluminescence tomography based on radiative transfer equation with the emphasis on improving

Soatto, Stefano

135

Positron Computed Tomography: Current State, Clinical Results and Future Trends  

DOE R&D Accomplishments (OSTI)

An overview is presented of positron computed tomography: its advantages over single photon emission tomography, its use in metabolic studies of the heart and chemical investigation of the brain, and future trends. (ACR)

Schelbert, H. R.; Phelps, M. E.; Kuhl, D. E.

1980-09-00T23:59:59.000Z

136

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

NLE Websites -- All DOE Office Websites (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...

137

Size distribution functions for rock fragments  

Science Journals Connector (OSTI)

Abstract The capacity of 17 functions to represent the size distribution of fragmented rock is assessed on 1234 data sets of screened fragments from blasted and crushed rock of different origins, of sizes ranging from 0.002 to 2000 mm. The functions evaluated are Weibull, Grady, log-normal, log-logistic and Gilvarry, in their plain, re-scaled and bi-component forms, and also the Swebrec distribution and its bi-component extension. In terms of determination coefficient, the Weibull is the best two-parameter function for describing rock fragments, with a median R2 of 0.9886. Among re-scaled, three-parameter distributions, Swebrec and Weibull lead with median R2 values of 0.9976 and 0.9975, respectively. Weibull and Swebrec distributions tie again as best bi-component, with median R2 of 0.9993. Re-scaling generally reduces the unexplained variance by a factor of about four with respect to the plain function; bi-components further reduce this unexplained variance by a factor of about two to three. Size-prediction errors are calculated in four zones: coarse, central, fines and very fines. Expected and maximum errors in the different ranges are discussed. The extended Swebrec is the best fitting function across the whole passing range for most types of data. Bimodal Weibull and Grady distributions follow, except for the coarse range, where re-scaled forms are preferable. Considering the extra difficulty in fitting a five-parameter function with respect to a three-parameter one, re-scaled functions are the best choice if data do not extend far below 20% passing. If the focus is on the fine range, some re-scaled distributions may still do (Weibull, Swebrec and Grady, with maximum errors of 15–20% at 8% passing), but serious consideration should be given to bi-component distributions, especially extended Swebrec, bimodal Weibull and bimodal Grady.

José A. Sanchidrián; Finn Ouchterlony; Pablo Segarra; Peter Moser

2014-01-01T23:59:59.000Z

138

Wavelength-dependent scattering in spectroscopic optical coherence tomography  

E-Print Network (OSTI)

Wavelength-dependent scattering in spectroscopic optical coherence tomography Chenyang Xu, P. Scott of light scattering spectroscopy (LSS) and the spatial localization of optical coherence tomography (OCT.4500) Optical coherence tomography; (290.0290) Scattering; (300.0300) Spectroscopy References and links 1. A

Bhargava, Rohit

139

Inverse scattering for rotationally scanned optical coherence tomography  

E-Print Network (OSTI)

Inverse scattering for rotationally scanned optical coherence tomography Daniel L. Marks, Tyler S May 16, 2006; posted May 26, 2006 (Doc. ID 67358) Optical coherence tomography of luminal structures coherence tomography1,2 (OCT), is determined in large part by the degree to which the images provide

Bhargava, Rohit

140

Cone Beam Tomography using MPI on Heterogeneous Workstation Clusters  

E-Print Network (OSTI)

tomography is a computed tomography method which efficiently acquires projectional data through a single. Introduction Tomographic reconstruction from projections using computed tomography (CT) provides a noninvasive, the projectional data is projected back onto an image buffer with each de- tected ray backprojected in it

Chaudhary, Vipin

Note: This page contains sample records for the topic "tomography rock density" 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

GPC behavior of metalloporphyrins from rock extract  

SciTech Connect

Nickel and vanadyl porphyrins present in rock extract from the vicinity of petroleum deposit in the Persian Gulf area were isolated by the combination of adsurption chromatography on silica gel and GPC on styrene-divinylbenzene copolymer. In order to study the GPC behavior of these metalloporphyrins, chromatographic fractions were collected and analyzed by UV/VIS absorption spectroscopy and mass spectrometry. The number of carbon atoms present in the porphine substituents and the different geometry of nickel and vanadyl ions in the molecule of metalloporphyrins were found to be the main factors influencing the GPC separation of these complexes. This chromatographic technique provided an effective separation of nickel from vanadylporphyrins.

Sebor, G.

1986-04-01T23:59:59.000Z

142

Study of Acid Response of Qatar Carbonate Rocks  

E-Print Network (OSTI)

STUDY OF ACID RESPONSE OF QATAR CARBONATE ROCKS A Thesis by ZHAOHONG WANG 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 2011 Major Subject: Petroleum Engineering Study of Acid Response of Qatar Carbonate Rocks Copyright 2011 Zhaohong Wang STUDY OF ACID RESPONSE OF QATAR CARBONATE ROCKS A Thesis...

Wang, Zhaohong

2012-02-14T23:59:59.000Z

143

United States National Waste Terminal Storage argillaceous rock studies  

SciTech Connect

The past and present argillaceous rock studies for the US National Waste Terminal Storage Program consist of: (1) evaluation of the geological characteristics of several widespread argillaceous formations in the United States; (2) laboratory studies of the physical and chemical properties of selected argillaceous rock samples; and (3) two full-scale in situ surface heater experiments that simulate the emplacement of heat-generating radioactive waste in argillaceous rock.

Brunton, G.D.

1981-01-01T23:59:59.000Z

144

Reconstruction in tomography with diffracting sources  

E-Print Network (OSTI)

Homogeneous Model . . . . . . . . . . . . . . . . . . . 22 III LIMITED-VIEW THERMOACOUSTIC TOMOGRAPHY1 . . . 24 A. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . 24 1. Analysis of Singularities in Circular Radon Trans- form and Limited-view TAT... . . . . . . . . . . . . . . 26 a. Circular Radon Transform . . . . . . . . . . . . . 26 b. TAT . . . . . . . . . . . . . . . . . . . . . . . . . 27 c. Reconstruction Methods . . . . . . . . . . . . . . 30 2. Numerical Implementation . . . . . . . . . . . . . . . 35 viii CHAPTER...

Xu, Yuan

2005-02-17T23:59:59.000Z

145

Advanced Instrumentation for Positron Emission Tomography [PET  

DOE R&D Accomplishments (OSTI)

This paper summarizes the physical processes and medical science goals that underlay modern instrumentation design for Positron Emission Tomography. The paper discusses design factors such as detector material, crystalphototube coupling, shielding geometry, sampling motion, electronics design, time-of-flight, and the interrelationships with quantitative accuracy, spatial resolution, temporal resolution, maximum data rates, and cost.

Derenzo, S. E.; Budinger, T. F.

1985-04-00T23:59:59.000Z

146

Binary Tomography with Deblurring Stefan Weber1  

E-Print Network (OSTI)

two scenarios of limited-angle binary tomography with data distorted with an unknown convolution: Either the projec- tion data are taken from a blurred object, or the projection data them- selves the projection data before reconstruction (let us call them preprocessing) and then the reconstruction

Schnörr, Christoph

147

Rock mechanics contributions from defense programs  

SciTech Connect

An attempt is made at illustrating the many contributions to rock mechanics from US defense programs, over the past 30-plus years. Large advances have been achieved in the technology-base area covering instrumentation, material properties, physical modeling, constitutive relations and numerical simulations. In the applications field, much progress has been made in understanding and being able to predict rock mass behavior related to underground explosions, cratering, projectile penetration, and defense nuclear waste storage. All these activities stand on their own merit as benefits to national security. But their impact is even broader, because they have found widespread applications in the non-defense sector; to name a few: the prediction of the response of underground structures to major earthquakes, the physics of the earth`s interior at great depths, instrumentation for monitoring mine blasting, thermo-mechanical instrumentation useful for civilian nuclear waste repositories, dynamic properties of earthquake faults, and transient large-strain numerical modeling of geological processes, such as diapirism. There is not pretense that this summary is exhaustive. It is meant to highlight success stories representative of DOE and DOD geotechnical activities, and to point to remaining challenges.

Heuze, F.E.

1992-02-01T23:59:59.000Z

148

Rock types, pore types, and hydrocarbon exploration  

SciTech Connect

A proposed exploration-oriented method of classifying porosity in sedimentary rocks is based on microscopic examination cores or cuttings. Factors include geometry, size, abundance, and connectivity of the pores. The porosity classification is predictive of key petrophysical characteristics: porosity-permeability relationships, capillary pressures, and (less certainly) relative permeabilities. For instance, intercrystalline macroporosity typically is associated with high permeability for a given porosity, low capillarity, and favorable relative permeabilities. This is found to be true whether this porosity type occurs in a sucrosic dolomite or in a sandstone with pervasive quartz overgrowths. This predictive method was applied in three Rocky Mountain oil plays. Subtle pore throat traps could be recognized in the J sandstone (Cretaceous) in the Denver basin of Colorado by means of porosity permeability plotting. Variations in hydrocarbon productivity from a Teapot Formation (Cretaceous) field in the Powder River basin of Wyoming were related to porosity types and microfacies; the relationships were applied to exploration. Rock and porosity typing in the Red River Formation (Ordovician) reconciled apparent inconsistencies between drill-stem test, log, and mud-log data from a Williston basin wildcat. The well was reevaluated and completed successfully, resulting in a new field discovery. In each of these three examples, petrophysics was fundamental for proper evaluation of wildcat wells and exploration plays.

Coalson, E.B.; Hartmann, D.J.; Thomas, J.B.

1985-05-01T23:59:59.000Z

149

Seepage into drifts in unsaturated fractured rock at Yucca Mountain  

E-Print Network (OSTI)

Fractured Rock at Yucca Mountain Jens Birkholzer, Guomin Lrepository site at Yucca Mountain, Nevada, as it is locatedclimate conditions at Yucca Mountain. The numerical study is

Birkholzer, Jens; Li, Guomin; Tsang, Chin-Fu; Tsang, Yvonne

1998-01-01T23:59:59.000Z

150

Active control of underground stresses through rock pressurization  

SciTech Connect

To significantly increase the stability of underground excavations while exploiting the full advantages of confined rock strength, methods must be developed to actively control the distribution of stresses near the excavation. This US Bureau of Mines study examines theoretical and practical aspects of rock pressurization, an active stress control concept that induces compressive stress in the wall rock through repeated hydraulic fracturing with a settable fluid. Numerical analyses performed by incorporating the rock pressurization concept into a variety of boundary-element models indicate that rock pressurization has the potential to improve underground excavation stability in three ways: (1) by relocating stress concentrations away from the weak opening surface to stronger, confined wall rock; (2) by inducing additional stresses in a biaxial stress field to reduce the difference between the principal stress components near the surface of the opening, and (3) by counteracting the tensile stresses induced in the rock around internally loaded openings. Practical aspects of the rock pressurization concept were investigated through a series of hydraulic fracturing experiments. The use of sulfur as a settable fluid for hydraulic fracturing was demonstrated, although problems related to sulfur viscosity suggest that other molten materials, such as wax, may be better suited to practical field application of the rock pressurization concept.

Vandergrift, T.L.

1995-06-01T23:59:59.000Z

151

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon...  

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

the carbonation reaction mechanisms between supercritical carbon dioxide (scCO2) and reservoir rocks consisting of different mineralogical compositions in aqueous and...

152

Scientists Pass Solid Particles Through Rock in DOE-Sponsored...  

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

rock fractures in the laboratory. This technology has the potential for mapping fracture systems in detail and aid in determining reservoir characteristics. This research was...

153

Reconstruction of Sedimentary Rock Based on Mechanical Properties  

E-Print Network (OSTI)

Diagenesis transforms an unconsolidated loose sed- imentOur emphasis is on unconsolidated sand and sandstone. Thesedi- mentary rock: unconsolidated sand and sandstone. The

Jin, Guodong; Patzek, Tad W.; Silin, Dmitry B.

2008-01-01T23:59:59.000Z

154

Rock Sampling At San Francisco Volcanic Field Area (Warpinski...  

Open Energy Info (EERE)

geologically mapped the target area, obtained rock samples for age dating and mineral chemistry, performed gravity and magnetic surveys, and integrated these results to identify...

155

Evaluation Of Used Fuel Disposition In Clay-Bearing Rock  

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

Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties, e.g., low permeability, potential geochemically reduced conditions...

156

Inner magnetosphere plasma densities  

E-Print Network (OSTI)

The radio plasma imager (RPI) on the IMAGE satellite performs radio sounding in the magnetosphere, transmitting coded signals stepping through the frequency range of interest and receiving the returned echoes. The measurements provide the echo amplitude as a function of frequency and echo delay time on a so-called plasmagram. A newly developed algorithm inverts THE echo traces on a plasmagram to electron density spatial distributions. Based on these observed density distributions, an empirical model is constructed to describe the two-dimensional density distribution in the inner magnetosphere.

Reinisch, B W

2002-01-01T23:59:59.000Z

157

Rock Rapids Municipal Utility | Open Energy Information  

Open Energy Info (EERE)

Rapids Municipal Utility Rapids Municipal Utility Jump to: navigation, search Name Rock Rapids Municipal Utility Place Iowa Utility Id 16206 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Power (Single-Phase) Commercial Commercial Power (Three-Phase) Commercial Residential Power Residential Average Rates Residential: $0.0807/kWh Commercial: $0.0633/kWh Industrial: $0.0899/kWh

158

international journal of rock mechanics and mining sciences  

E-Print Network (OSTI)

Original Research, New Developments and Case Studies in Rock Mechanics and Rock .... Prior to submitting your paper, please follow the instructions given below. ... Permission of the Publisher is required for resale or distribution ..... The Digital Object Identifier (DOI) may be used to cite and link to electronic documents.

159

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide  

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

Project Objectives: Elucidate comprehensively the carbonation reaction mechanisms between supercritical carbon dioxide (scCO2) and reservoir rocks consisting of different mineralogical compositions in aqueous and non-aqueous environments at temperatures of up to 250ºC, and to develop chemical modeling of CO2-reservior rock interactions.

160

SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES  

SciTech Connect

As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Effects of pore texture on porosity, permeability, and sonic velocity. We show how a relation can be found between porosity, permeability, and velocity by separating the formations of rocks with similar pore textures.

Gary Mavko

2003-06-30T23:59:59.000Z

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


161

GEOS898 History on the Rocks Assignment 2  

E-Print Network (OSTI)

can be broken down into four major rock groups (i.e. Clastic, biogenic, organic, chemical Flow chart for identifying sedimentary rocks (most text books have this or can be found on line) Acid, distribution of layers and chemistry. It is worthwhile for the teacher to spend about 10 minutes reviewing

Frank, Tracy D.

162

Determining inert content in coal dust/rock dust mixture  

DOE Patents (OSTI)

A method and apparatus for determining the inert content of a coal dust and rock dust mixture uses a transparent window pressed against the mixture. An infrared light beam is directed through the window such that a portion of the infrared light beam is reflected from the mixture. The concentration of the reflected light is detected and a signal indicative of the reflected light is generated. A normalized value for the generated signal is determined according to the relationship .phi.=(log i.sub.c `log i.sub.co) / (log i.sub.c100 -log i.sub.co) where i.sub.co =measured signal at 0% rock dust i.sub.c100 =measured signal at 100% rock dust i.sub.c =measured signal of the mixture. This normalized value is then correlated to a predetermined relationship of .phi. to rock dust percentage to determine the rock dust content of the mixture. The rock dust content is displayed where the percentage is between 30 and 100%, and an indication of out-of-range is displayed where the rock dust percent is less than 30%. Preferably, the rock dust percentage (RD%) is calculated from the predetermined relationship RD%=100+30 log .phi.. where the dust mixture initially includes moisture, the dust mixture is dried before measuring by use of 8 to 12 mesh molecular-sieves which are shaken with the dust mixture and subsequently screened from the dust mixture.

Sapko, Michael J. (Finleyville, PA); Ward, Jr., Jack A. (Oakmont, PA)

1989-01-01T23:59:59.000Z

163

Fluid Migration During Ice/Rock Planetesimal Differentiation  

E-Print Network (OSTI)

/water reaction, which will depend on the rate at which water can be segregated from a melting ice/rock core. For the liquid water phase to migrate toward the surface, the denser rock phase must compact. The primary question that this thesis will answer is how...

Raney, Robert 1987-

2012-12-12T23:59:59.000Z

164

Engineering assessment of inactive uranium mill tailings: Slick Rock sites, Slick Rock, Colorado  

SciTech Connect

Ford, Bacon and Davis Utah, Inc., has reevaluated the Slick Rock sites in order to revise the October 1977 engineering radioactive uranium mill tailings at Slick Rock, Colorado. This engineering assessment has included the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and radiation exposures of individuals and nearby populations, the investigations of site hydrology and meteorology, and the evaluation and costing of alternative corrective actions. Radon gas released from the 387,000 tons of tailings at the Slick Rock sites constitutes the most significant environmental impact, although windblown tailings and external gamma radiation also are factors. The five alternative actions presented in this engineering assessment include millsite decontamination with the addition of 3 m of stabilization cover material, consolidation of the piles, and removal of the tailings to remote disposal sites and decontamination of the tailings sites. Cost estimates for the five options range from about $6,800,000 for stabilization in-place, to about $11,000,000 for disposal at a distance of about 6.5 mi. Three principal alternatives for the reprocessing of the Slick Rock tailings were examined: heap leaching; treatment at an existing mill; and reprocessing at a new conventional mill constructed for tailings reprocessing. The cost of the uranium recovered would be over $800/lb of U/sub 3/O/sub 8/ whether by conventional or heap leach plant processes. The spot market price for uranium was $25/lb early in 1981. Therefore, reprocessing the tailings for uranium recovery is not economically attractive at present, nor for the foreseeable future.

none,

1981-09-01T23:59:59.000Z

165

Property:HostRockLithology | Open Energy Information  

Open Energy Info (EERE)

HostRockLithology HostRockLithology Jump to: navigation, search Property Name HostRockLithology Property Type String Description Condensed description of the lithology of the reservoir rock. This is a property of type Page. Subproperties This property has the following 14 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area C Chena Geothermal Area D Desert Peak Geothermal Area G Geysers Geothermal Area H Heber Geothermal Area L Lightning Dock Geothermal Area R Raft River Geothermal Area Roosevelt Hot Springs Geothermal Area S Salton Sea Geothermal Area Steamboat Springs Geothermal Area S cont. Stillwater Geothermal Area V Valles Caldera - Sulphur Springs Geothermal Area W Wabuska Hot Springs Geothermal Area Pages using the property "HostRockLithology"

166

Drilling Large Diameter Holes in Rocks Using Multiple Laser Beams  

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

Drilling Large Diameter Holes in Rocks Using Multiple Laser Beams (504) Drilling Large Diameter Holes in Rocks Using Multiple Laser Beams (504) Richard Parker,. Parker Geoscience Consulting, LLC, Arvada, Colorado, USA; Zhiyue Xu and Claude Reed, Argonne National Laboratory, Argonne, Illinois, USA; Ramona Graves, Department of Petroleum Engineering, Colorado School of Mines, Golden, Colorado, USA; Brian Gahan and Samih Batarseh, Gas Technology Institute, Des Plaines, Illinois, USA ABSTRACT Studies on drilling petroleum reservoir rocks with lasers show that modern infrared lasers have the capability to spall (thermally fragment), melt and vaporize natural earth materials with the thermal spallation being the most efficient rock removal mechanism. Although laser irradiance as low as 1000 W/cm 2 is sufficient to spall rock, firing the

167

Property:HostRockAge | Open Energy Information  

Open Energy Info (EERE)

HostRockAge HostRockAge Jump to: navigation, search Property Name HostRockAge Property Type String Description Describes the age of the reservoir rock by epoch, era, or period per available data. This is a property of type Page. Subproperties This property has the following 10 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area C Chena Geothermal Area D Desert Peak Geothermal Area G Geysers Geothermal Area R Raft River Geothermal Area Roosevelt Hot Springs Geothermal Area S Salton Sea Geothermal Area Steamboat Springs Geothermal Area W Wabuska Hot Springs Geothermal Area Pages using the property "HostRockAge" Showing 11 pages using this property. A Amedee Geothermal Area + Mesozoic + B Blue Mountain Geothermal Area + Triassic + C Coso Geothermal Area + Mesozoic +

168

Electrical Conductivity of Soils and Rocks | 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 » Electrical Conductivity of Soils and Rocks Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Electrical Conductivity of Soils and Rocks Author J.D. McNeill Organization Geonics Limited Published Geonics Limited, 1980 Report Number TN-5 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Electrical Conductivity of Soils and Rocks Citation J.D. McNeill (Geonics Limited). 1980. Electrical Conductivity of Soils and Rocks. TN-5 Edition. ?: Geonics Limited. Report No.: TN-5. Retrieved from "http://en.openei.org/w/index.php?title=Electrical_Conductivity_of_Soils_and_Rocks&oldid=695344"

169

Rock Sampling At Coso Geothermal Area (1995) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock Sampling At Coso Geothermal Area (1995) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Coso Geothermal Area (1995) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Rock Sampling Activity Date 1995 Usefulness not indicated DOE-funding Unknown Notes Geologic controls on the geometry of the upwelling plume were investigated using petrographic and analytical analyses of reservoir rock and vein material. References Lutz, S.J.; Moore, J.N. ; Copp, J.F. (1 June 1995) Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Area,

170

Property:CapRockLithology | Open Energy Information  

Open Energy Info (EERE)

CapRockLithology CapRockLithology Jump to: navigation, search Property Name CapRockLithology Property Type String Description Condensed description of the lithology of the cap rock. Subproperties This property has the following 6 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area D Desert Peak Geothermal Area E East Mesa Geothermal Area H Heber Geothermal Area S Salton Sea Geothermal Area Pages using the property "CapRockLithology" Showing 6 pages using this property. A Amedee Geothermal Area + volcanic; lacustrine sediments + B Blue Mountain Geothermal Area + Hydrothermal alteration layer + G Geysers Geothermal Area + Hydrothermal alteration layer + K Kilauea East Rift Geothermal Area + Overlapping a'a' and pahoehoe flows + L Long Valley Caldera Geothermal Area + Metasedimentary Landslide Block; Hydrothermal Alteration Layer +

171

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program |  

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

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Program Info State South Carolina Program Type Utility Rebate Program Rebate Amount Water Heater: up to $275 Heat Pump Replacement: $400 Provider Rock Hill Utilities Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed above. If both the water heater and heat pump are purchased then the customer may qualify for the Great Rate program. The Great Rate program will add a 25% discount to a

172

Longwave thermal infrared spectral variability in individual rocks  

SciTech Connect

A hyperspectral imaging spectrometer measuring in the longwave thermal infrared (7.6-11.6 {micro}m) with a spatial resolution less than 4 mm was used in the field to observe the variability of emissivity spectra within individual rocks. The rocks were obtained commercially, were on the order of 20 cm in size and were selected to have distinct spectral features: they include alabaster (gypsum), soapstone (steatite with talc), obsidian (volcanic glass), norite (plagioclase and orthopyroxene), and 'jasper' (silica with iron oxides). The advantages of using an imaging spectrometer to spectrally characterize these rocks are apparent. Large spectral variations were observed within individual rocks that may be attributed to roughness, surface geometry, and compositional variation. Non-imaging spectrometers would normally miss these variations as would small samples used in laboratory measurements, spatially averaged spectra can miss the optimum spectra for identification materials and spatially localized components of the rock can be obscured.

Balick, Lee K [Los Alamos National Laboratory; Gillespie, Alan [UN. WASHINGTON; French, Andrew [USDA-ARS; Danilina, Iryna [UN. WASHINGTON

2008-01-01T23:59:59.000Z

173

Isotopic Analysis- Rock At Coso Geothermal Area (1984) | Open Energy  

Open Energy Info (EERE)

Analysis- Rock At Coso Geothermal Area (1984) Analysis- Rock At Coso Geothermal Area (1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Coso Geothermal Area (1984) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Rock Activity Date 1984 Usefulness not indicated DOE-funding Unknown Exploration Basis To analyze evidence for crustal interaction and compositional zonation in the source regions of Pleistocene basaltic and rhyolitic magmas of the Coso volcanic field Notes The isotopic compositions of Pb and Sr in Pleistocene basalt, high-silica rhyolite, and andesitic inclusions in rhyolite of the Coso volcanic field indicate that these rocks were derived from different levels of compositionally zoned magmatic systems. The two earliest rhyolites probably

174

Seismic tomography of the Excavation Damaged Zone of the Gallery 04 in the Mont Terri Rock Laboratory  

Science Journals Connector (OSTI)

......velocity is homogeneous but anisotropic with a minimum value of 2490...was created in a Mesozoic shale formation constituted by the...with the highest value of the anisotropic attenuation close to the principal...tracing modelling was done for anisotropic seismic velocity, and we......

F. Nicollin; D. Gibert; P. Bossart; Ch. Nussbaum; C. Guervilly

2008-01-01T23:59:59.000Z

175

Ground-based Microwave Cloud Tomography  

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

Microwave Cloud Tomography Microwave Cloud Tomography Experiment, SGP, May 15-June 15, 2009 Lead Scientist Dong Huang, BNL Co-Investigators Al Gasiewski, UC Boulder Maria Cadeddu, ANL Warren Wiscombe, BNL Radiation Processes Working Group March 30, 2009 multiple radiometers All good cloud radiation modelers should close their airplane window shades so as not to be corrupted by the spectacle of real 3D clouds. - Roger Davies In case you forget to do this, you see 3/30/2009 ARM RPWG 2 Effects of cloud structure on radiation 3/30/2009 ARM RPWG 3 Typical climate model - Cloud fraction & mean water content - Horizontally uniform clouds, no side radiation - Assumption on overlap Courtesy of Bernhard Mayer Cloud structure important to radiation - Cumulus (Benner & Evans 2001, Pincus et al. 2005), deep convection (DiGiuseppe &

176

Constitutive relationships for elastic deformation of clay rock: Data Analysis  

SciTech Connect

Geological repositories have been considered a feasible option worldwide for storing high-level nuclear waste. Clay rock is one of the rock types under consideration for such purposes, because of its favorable features to prevent radionuclide transport from the repository. Coupled hydromechanical processes have an important impact on the performance of a clay repository, and establishing constitutive relationships for modeling such processes are essential. In this study, we propose several constitutive relationships for elastic deformation in indurated clay rocks based on three recently developed concepts. First, when applying Hooke's law in clay rocks, true strain (rock volume change divided by the current rock volume), rather than engineering strain (rock volume change divided by unstressed rock volume), should be used, except when the degree of deformation is very small. In the latter case, the two strains will be practically identical. Second, because of its inherent heterogeneity, clay rock can be divided into two parts, a hard part and a soft part, with the hard part subject to a relatively small degree of deformation compared with the soft part. Third, for swelling rock like clay, effective stress needs to be generalized to include an additional term resulting from the swelling process. To evaluate our theoretical development, we analyze uniaxial test data for core samples of Opalinus clay and laboratory measurements of single fractures within macro-cracked Callovo-Oxfordian argillite samples subject to both confinement and water reduced swelling. The results from this evaluation indicate that our constitutive relationships can adequately represent the data and explain the related observations.

Liu, H.H.; Rutqvist, J.; Birkholzer, J.T.

2011-04-15T23:59:59.000Z

177

Efficient and facile delivery of gold nanoparticles in vivo using dissolvable microneedles for contrast-enhanced optical coherence tomography  

E-Print Network (OSTI)

J. G. Fujimoto, “Optical coherence tomography,” Science 254(and imaging using optical coherence tomography,” Nat. Med.J. G. Fujimoto, “Optical coherence tomography for optical

Kim, Chang Soo; Ahn, Yeh-Chan; Wilder-Smith, Petra; Oh, Seajin; Chen, Zhongping; Kwon, Young Jik

2010-01-01T23:59:59.000Z

178

Spectral-domain optical coherence tomography of conjunctival mucosa-associated lymphoid tissue lymphoma with presumed choroidal involvement  

E-Print Network (OSTI)

lymphoid tissue . MALT . Optical coherence tomography . OCTdo not include ocular coherence tomography (OCT). We presentSpectral-domain optical coherence tomography of conjunctival

Williams, Basil K.; Tsui, Irena; McCannel, Tara A.

2010-01-01T23:59:59.000Z

179

AFIP-7 Tomography – 2013 Status Report  

SciTech Connect

This project seeks to assess the geometric stability of the U-Mo monolithic fuel system by evaluating the radiation-induced changes in the AFIP-7 experiment device. Neutron radiography and computed tomography (CT) provide valuable information about the post-irradiation condition of the fuel specimen. Tomographic reconstructions of the AFIP-7 fuel element will be analyzed to assess the geometric condition of the element after irradiation and provide information regarding the condition of the fuel, including gross geometric defects, bowing, twist, plate buckling, cracks, and other defects. The INL, in collaboration with Oregon State University (OSU), Missouri University of Science and Technology (Missouri S&T), and Real Time Tomography, is developing advanced neutron detector systems and tomographic reconstruction techniques to evaluate the AFIP-7 fuel element. Neutron computed tomography using the current neutron radiography technique available at the Neutron Radiography reactor (NRAD) is impractical due to the long time and high cost to produce a set of images for tomographic reconstruction. Advanced neutron radiography systems such as the micro-channel plate (MCP) detector and neutron computed radiography (CR) may reduce the time and cost of acquiring images for neutron CT.

A.E. Craft; W.J. Williams; M.I.K. Abir; D.M. Wachs

2013-10-01T23:59:59.000Z

180

VECTOR TOMOGRAPHY FOR THE CORONAL MAGNETIC FIELD. II. HANLE EFFECT MEASUREMENTS  

SciTech Connect

In this paper, we investigate the feasibility of saturated coronal Hanle effect vector tomography or the application of vector tomographic inversion techniques to reconstruct the three-dimensional magnetic field configuration of the solar corona using linear polarization measurements of coronal emission lines. We applied Hanle effect vector tomographic inversion to artificial data produced from analytical coronal magnetic field models with equatorial and meridional currents and global coronal magnetic field models constructed by extrapolation of real photospheric magnetic field measurements. We tested tomographic inversion with only Stokes Q, U, electron density, and temperature inputs to simulate observations over large limb distances where the Stokes I parameters are difficult to obtain with ground-based coronagraphs. We synthesized the coronal linear polarization maps by inputting realistic noise appropriate for ground-based observations over a period of two weeks into the inversion algorithm. We found that our Hanle effect vector tomographic inversion can partially recover the coronal field with a poloidal field configuration, but that it is insensitive to a corona with a toroidal field. This result demonstrates that Hanle effect vector tomography is an effective tool for studying the solar corona and that it is complementary to Zeeman effect vector tomography for the reconstruction of the coronal magnetic field.

Kramar, M. [Physics Department, The Catholic University of America, 620 Michigan Avenue NE, Washington, DC 20064 (United States); Inhester, B. [Max-Planck-Institut fuer Sonnensystemforschung, Max-Plank-Str. 2, D-37191 Katlenburg-Lindau (Germany); Lin, H. [Institute for Astronomy, University of Hawaii at Manoa, 34 Ohia Ku Street, Pukalani, Maui, HI 96768 (United States); Davila, J., E-mail: maxim.i.kramar@nasa.gov, E-mail: Joseph.M.Davila@nasa.gov, E-mail: inhester@mps.mpg.de, E-mail: lin@ifa.hawaii.edu [NASA-GSFC, Code 671, Greenbelt, MD 20771 (United States)

2013-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Density | OpenEI  

Open Energy Info (EERE)

Density Density Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (5 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

182

Single-Nucleon Densities  

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

Densities Densities This web page presents single-nucleon densities calculated for a variety of nuclei in the range A=2-10 with some preliminary results for A=11,12. These are from variational Monte Carlo calculations (VMC) using the Argonne v18 two-nucleon and Urbana X three-nucleon potentials (AV18+UX). (Urbana X is intermediate between the Urbana IX and Illinois-7 models; it has the form of UIX supplemented with a two-pion S-wave piece, while the strengths of its terms are taken from the IL7 model. It does NOT have the three-pion-ring term of IL7.) These VMC wave functions are the starting trial functions for a number of recent Green's function Monte Carlo (GFMC) calculations: Brida, et al., Phys. Rev. C 84, 024319 (2011); McCutchan, et al., Phys. Rev. C 86, 024315 (2012);

183

Evaluation of Five Sedimentary Rocks Other Than Salt for Geologic Repository Siting Purposes  

SciTech Connect

The US Department of Energy (DOE), in order to increase the diversity of rock types under consideration by the geologic disposal program, initiated the Sedimary ROck Program (SERP), whose immediate objectiv eis to evaluate five types of secimdnary rock - sandstone, chalk, carbonate rocks (limestone and dolostone), anhydrock, and shale - to determine the potential for siting a geologic repository. The evaluation of these five rock types, together with the ongoing salt studies, effectively results in the consideration of all types of relatively impermeable sedimentary rock for repository purposes. The results of this evaluation are expressed in terms of a ranking of the five rock types with respect to their potential to serve as a geologic repository host rock. This comparative evaluation was conducted on a non-site-specific basis, by use of generic information together with rock evaluation criteria (RECs) derived from the DOE siting guidelines for geologic repositories (CFR 1984). An information base relevant to rock evaluation using these RECs was developed in hydrology, geochemistry, rock characteristics (rock occurrences, thermal response, rock mechanics), natural resources, and rock dissolution. Evaluation against postclosure and preclosure RECs yielded a ranking of the five subject rocks with respect to their potential as repository host rocks. Shale was determined to be the most preferred of the five rock types, with sandstone a distant second, the carbonate rocks and anhydrock a more distant third, and chalk a relatively close fourth.

Croff, A.G.; Lomenick, T.F.; Lowrie, R.S.; Stow, S.H.

2003-11-15T23:59:59.000Z

184

E-Print Network 3.0 - aspo hard rock Sample Search Results  

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

60 Merguerian, Charles; and Ozdemir, Levent, 2003, Rock Mass Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel 3, Stage 2: p....

185

A STATISTICAL FRACTURE MECHANICS APPROACH TO THE STRENGTH OF BRITTLE ROCK  

E-Print Network (OSTI)

to evaluate subcritical crack growth, many of the rubberoccurred indicating negligible subcritical crack growth.Subcritical crack growth can occur in many rocks and rock-

Ratigan, J.L.

2010-01-01T23:59:59.000Z

186

Density Functional Theory for Superconductors  

E-Print Network (OSTI)

Density Functional Theory for Superconductors LATHIOTAKIS, A. MARQUES, 1,2,3 LU DERS, L. FAST, 2004 words: theory superconductors; density functional theory; critical temperature; exchange matter physics theoretical chemistry is density functional theory (DFT). foundations were established mid

Gross, E.K.U.

187

Relativistic Nuclear Energy Density Functionals  

Science Journals Connector (OSTI)

......research-article Articles Relativistic Nuclear Energy Density Functionals Dario Vretenar...196, 2012 137 Relativistic Nuclear Energy Density Functionals Dario Vretenar...and P. Ring 2. Relativistic nuclear energy density functionals Even though......

Dario Vretenar; Tamara Niksic; Peter Ring

2012-10-01T23:59:59.000Z

188

angiographic computed tomography: Topics by E-print Network  

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

the development and application of a 4-Dimensional Computed Tomography (4D CT) simulation program. The simulation is used to understand and quantify the sources of image...

189

Time-dependent seismic tomography and its application to the...  

Open Energy Info (EERE)

to the Coso geothermal area, 1996-2006 Abstract Measurements of temporal changes in Earth structure are commonly determined using local earthquake tomography computer programs...

190

Emerging trends in cone-beam computed tomography utilization.  

E-Print Network (OSTI)

?? Utilization of cone-beam computed tomography (CBCT) provides precise and interactive images, which facilitate the diagnosis of dental disease and guided therapy. As with any… (more)

Boyle, Elizabeth M.

2010-01-01T23:59:59.000Z

191

White-Etching Crack Failure Overview, Tomography Analysis, and...  

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

White-Etching Crack Failure Overview, Tomography Analysis, and Test Development Presented by Aaron Greco of Argonne National Laboratory at the Wind Turbine Tribology Seminar 2014....

192

Three-Dimensional Thermal Tomography Advances Cancer Treatment...  

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

Three-Dimensional Thermal Tomography Advances Cancer Treatment Technology available for licensing: A 3D technique to detect early skin changes due to radiation treatment in breast...

193

Excavation Damaged Zones In Rock Salt Formations  

SciTech Connect

Salt formations have long been proposed as potential host rocks for nuclear waste disposal. After the operational phase of a repository the openings, e.g., boreholes, galleries, and chambers, have to be sealed in order to avoid the release of radionuclides into the biosphere. For optimising the sealing techniques knowledge about the excavation damaged zones (EDZ) around these openings is essential. In the frame of a project performed between 2004 and 2007, investigations of the EDZ evolution were performed in the Stassfurt halite of the Asse salt mine in northern Germany. Three test locations were prepared in the floor of an almost 20 year old gallery on the 800-m level of the Asse mine: (1) the drift floor as existing, (2) the new drift floor shortly after removing of a layer of about 1 m thickness of the floor with a continuous miner, (3) the new drift floor 2 years after cutting off the 1-m layer. Subject of investigation were the diffusive and advective gas transport and the advective brine transport very close to the opening. Spreading of the brine was tracked by geo-electric monitoring in order to gain information about permeability anisotropy. Results obtained showed that EDZ cut-off is a useful method to improve sealing effectiveness when constructing technical barriers. (authors)

Jockwer, N.; Wieczorek, K. [Gesellschaft fur Anlagen- und Reaktorsicherheit (GRS) mbH, Braunschweig (Germany)

2008-07-01T23:59:59.000Z

196

Temperature Tomography of the Soft X-Ray Corona: Measurements  

Science Journals Connector (OSTI)

We analyze long-exposure and off-pointing Yohkoh/SXT data of the solar corona observed on 1992 August 26. We develop a new (temperature) tomography method that is based on a forward-fitting method of a four-parameter model to the observed soft X-ray fluxes F1(h) and F2(h) of two SXT wavelength filters as a function of height h. The model is defined in terms of a differential emission measure (DEM) distribution dEM(h, T)/dT, which includes also a temperature dependence of density scale heights ?n(T) = q??T and allows us to quantify deviations (q? ? 1) from hydrostatic equilibrium (q? = 1). This parametrization facilitates a proper line-of-sight integration and relates the widely used filter ratio temperature TFR to the peak of the DEM distribution. A direct consequence of the multi-scale height atmosphere is that the filter ratio temperature TFR(h) is predicted to increase with height, even if all magnetic field lines are isothermal. Our model fitting reveals that coronal holes and quiet-Sun regions are in perfect hydrostatic equilibrium but that coronal streamers have a scale height that exceeds the hydrostatic scale height by a factor of up to q? 2.3, which underscores the dynamic nature of coronal streamers. Our density measurements in coronal holes are slightly lower than most of the white-light polarized brightness inversions and seem to come closer to the requirements of solar wind models. Our DEM model provides also a physical framework for the semiempirical Baumbach-Allen formula and quantifies the temperature ranges and degree of hydrostaticity of the K, L, and F coronae.

Markus J. Aschwanden; Loren W. Acton

2001-01-01T23:59:59.000Z

197

Energy in density gradient  

E-Print Network (OSTI)

Inhomogeneous plasmas and fluids contain energy stored in inhomogeneity and they naturally tend to relax into lower energy states by developing instabilities or by diffusion. But the actual amount of energy in such inhomogeneities has remained unknown. In the present work the amount of energy stored in a density gradient is calculated for several specific density profiles in a cylindric configuration. This is of practical importance for drift wave instability in various plasmas, and in particular in its application in models dealing with the heating of solar corona because the instability is accompanied with stochastic heating, so the energy contained in inhomogeneity is effectively transformed into heat. It is shown that even for a rather moderate increase of the density at the axis in magnetic structures in the corona by a factor 1.5 or 3, the amount of excess energy per unit volume stored in such a density gradient becomes several orders of magnitude greater than the amount of total energy losses per unit ...

Vranjes, J

2015-01-01T23:59:59.000Z

198

Multiple density layered insulator  

DOE Patents (OSTI)

A multiple density layered insulator for use with a laser is disclosed wh provides at least two different insulation materials for a laser discharge tube, where the two insulation materials have different thermoconductivities. The multiple layer insulation materials provide for improved thermoconductivity capability for improved laser operation.

Alger, Terry W. (Tracy, CA)

1994-01-01T23:59:59.000Z

199

DOE - Office of Legacy Management -- Rock Island Arsenal - IL 09  

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

Rock Island Arsenal - IL 09 Rock Island Arsenal - IL 09 FUSRAP Considered Sites Site: ROCK ISLAND ARSENAL ( IL.09 ) Eliminated from consideration under FUSRAP - Referred to DOD Designated Name: Not Designated Alternate Name: None Location: Rock Island , Illinois IL.09-1 Evaluation Year: 1987 IL.09-2 Site Operations: Site located on a DOD facility and operated under AEC control. Exact nature or time period of operations not clear. No indication that radioactive materials were involved. Contract work with Albuquerque Operations office performed. IL.09-1 IL.09-2 Site Disposition: Eliminated - No Authority - Referred to DOD IL.09-2 Radioactive Materials Handled: None Indicated IL.09-2 Primary Radioactive Materials Handled: None Indicated Radiological Survey(s): None Indicated

200

DOE - Office of Legacy Management -- WNI Split Rock Site - 043  

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

Split Rock Site - 043 Split Rock Site - 043 FUSRAP Considered Sites Site: WNI Split Rock Site (043) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: The Western Nuclear, Inc. (WNI) Split Rock site is a Uranium Mill Tailings Remedial Action (UMTRA) Title II site located in Jeffrey City, Wyoming. UMTRA Title II sites are privately owned and operated sites that were active when the Uranium Mill Tailings Control Act was passed in 1978. The majority of the milling conducted at these sites was for private sale, but a portion was sold to the U.S. Government. After the owner completes U.S. Nuclear Regulatory Commission license termination, the Department of

Note: This page contains sample records for the topic "tomography rock density" 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

Photo of the Week: Laser Beats Rock | Department of Energy  

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

Laser Beats Rock Laser Beats Rock Photo of the Week: Laser Beats Rock April 8, 2013 - 5:28pm Addthis On August 5, 2012, the Curiosity rover touched down on the surface of Mars. The ChemCam instrument package, developed at Los Alamos National Laboratory, is a device mounted on the Mars Curiosity rover that uses two remote sensing instruments: the Laser-Induced Breakdown Spectrometer (LIBS) and a Remote Micro-Imager (RMI). The LIBS fires a powerful laser that determines chemical compositions of rock and soil samples, while the RMI takes photos of the samples within the rover's vicinity. In this photo, the ChemCam is being prepared in the clean room prior to the launch of NASA's Mars Science Laboratory mission. Learn more about the ChemCam. | Photo courtesy of Los Alamos National Laboratory.

202

Isotopic Analysis- Rock At Coso Geothermal Area (1997) | Open Energy  

Open Energy Info (EERE)

Rock At Coso Geothermal Area (1997) Rock At Coso Geothermal Area (1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Coso Geothermal Area (1997) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Rock Activity Date 1997 Usefulness useful DOE-funding Unknown Exploration Basis Determine a major lithospheric boundary Notes Sr and Nd isotope ratios of Miocene-Recent basalts in eastern California, when screened for crustal contamination, vary dramatically and indicate the presence of a major lithospheric boundary that is not obvious from surface geology. Isotope ratios from the Coso field form a bull's-eye pattern with very low 87Sr/86Sr (0.7033) centered just south of the geothermal area. The

203

Rock Sampling At Florida Mountains Area (Brookins, 1982) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock Sampling At Florida Mountains Area (Brookins, 1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Florida Mountains Area (Brookins, 1982) Exploration Activity Details Location Florida Mountains Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Radiogenic heat production analysis from U,Th,K concentrations. References D. G. Brookins (1982) Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In The Precambrian And Younger Silicic Rocks Of The Zuni And Florida Mountains, New Mexico (Usa)

204

On the energy range relation for fast muons in rock  

Science Journals Connector (OSTI)

A discussion is given of the best estimate of various types of energy loss; the energy-range relation for muons in rock and water is then evaluated....?6 g?1 cm2 fractional «nuclear» energy losses respectively; w...

M. Mandò; L. Ronchi

1952-01-01T23:59:59.000Z

205

Upscaling of elastic properties of anisotropic sedimentary rocks  

Science Journals Connector (OSTI)

......Data 2.1 Physical model of shale Shales are anisotropic rocks whose anisotropy is generally...Hudson J.A., 1994. Anisotropic effective-medium modeling of the elastic properties of shales, Geophysics, 59, 1570-1583......

Irina O. Bayuk; Mike Ammerman; Evgeni M. Chesnokov

2008-02-01T23:59:59.000Z

206

Mimbres rock art: a graphic legacy of cultural expression  

E-Print Network (OSTI)

Rock art abounds along the Mimbres River banks and drainage tributaries reflecting the rich cultural remains of the ancient Mimbres people. The Mimbres are a well established cultural group who lived in southwest New Mexico and northern Mexico from...

Tidemann, Kathryn

2012-06-07T23:59:59.000Z

207

Experimental Study on Rock Deformation and Permeability Variation  

E-Print Network (OSTI)

The development of a petroleum reservoir would inevitably induce a rearrangement of the in-situ stress field. The rearrangement of the stress field would then bring about a deformation of the reservoir rock and a change of the permeability...

Ding, Jihui

2013-08-01T23:59:59.000Z

208

Acid Fracture and Fracture Conductivity Study of Field Rock Samples  

E-Print Network (OSTI)

Acid fracturing is a well stimulation strategy designed to increase the productivity of a producing well. The parameters of acid fracturing and the effects of acid interaction on specific rock samples can be studied experimentally. Acid injection...

Underwood, Jarrod

2013-11-15T23:59:59.000Z

209

Modeling of Seismic Signatures of Carbonate Rock Types  

E-Print Network (OSTI)

Carbonate reservoirs of different rock types have wide ranges of porosity and permeability, creating zones with different reservoir quality and flow properties. This research addresses how seismic technology can be used to identify different...

Jan, Badr H.

2011-02-22T23:59:59.000Z

210

Rock Sampling At Long Valley Caldera Geothermal Area (Goff, Et...  

Open Energy Info (EERE)

pre-intrusive metavolcanic and metasedimentary rocks can have considerably higher Sr-isotope ratios (0.7061-0.7246 and 0.7090-0.7250, respectively). Hydrothermally altered...

211

Microsoft Word - CX_HatRockEquipmentDisposition.docx  

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

station taps PacifiCorp's McNary-Wallula 230-kilovolt (kV) line to serve BPA's Hat Rock Substation. PacifiCorp is in the process of rebuilding the switching station, including...

212

Mathematical model of a Hot Dry Rock system  

Science Journals Connector (OSTI)

......efficiency calculations, geothermal energy, Hot Dry Rock, multiple crack...is to estimate the amount of energy which may be produced by a geothermic power station. Heat capacity...provides a large resource of energy. To obtain the energy cold......

Norbert Heuer; Tassilo Küpper; Dirk Windelberg

1991-06-01T23:59:59.000Z

213

Hot rocks could help meet US energy needs  

Science Journals Connector (OSTI)

... -4 Hot rocks could help meet US energy needs LucyOdling-Smee Get more out of geothermal, experts advise. ... , experts advise.Geothermal energy takes advantage of heat naturally generated within the earth. Punchstock Nature energy focus ...

Lucy Odling-Smee

2007-01-23T23:59:59.000Z

214

Asphaltene Deposition in Carbonate Rocks: Experimental Investigation and Numerical Simulation  

Science Journals Connector (OSTI)

Asphaltene Deposition in Carbonate Rocks: Experimental Investigation and Numerical Simulation ... Interfacial tension (IFT) as one of the main properties for efficient CO2 flooding planning in oil reservoirs depends strongly on pressure, temperature, and composition of the reservoir fluids. ...

Shahin Kord; Rohaldin Miri; Shahab Ayatollahi; Mehdi Escrochi

2012-06-20T23:59:59.000Z

215

Reservoir Investigations on the Hot Dry Rock Geothermal System...  

Open Energy Info (EERE)

Investigations on the Hot Dry Rock Geothermal System, Fenton Hill, New Mexico- Tracer Test Results Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

216

Fluid-Rock Interaction in Geothermal Energy Recovery  

Science Journals Connector (OSTI)

Reaction of aqueous fluids with minerals of geothermal energy reservoir rocks produces both secondary solid phases ... for these effects. Heat production from chemical energy is possible in relevant amounts, but ...

E. Althaus

1980-01-01T23:59:59.000Z

217

Hot Dry Rock Reservoir Engineering | Open Energy Information  

Open Energy Info (EERE)

hydraulically connect the wells. Water pumped down the injection well and through the fracture system is heated by contact with the hot rock and rises to the production well. This...

218

FREQUENCY DEPENDENT ELASTIC AND ANELASTIC PROPERTIES OF CLASTIC ROCKS  

E-Print Network (OSTI)

was sequestered in a shallow saline aquifer where the vertical migration of the CO2 is controlled by shale changes in the compressibility of rocks. A large difference between the seismic and ultrasonic frequencies

219

The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks  

E-Print Network (OSTI)

In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore pressure and fracture...

Keys, Ryan S.

2010-07-14T23:59:59.000Z

220

Gamma-ray absorption and chemical composition of neovolcanic rocks  

Science Journals Connector (OSTI)

Gamma-ray absorption coefficients ? Cs 137 for a set of 49 neovolcanic rocks from the Bohemian Massif were measured; their values varied in the range from 0.2092 cm?1 to 0.2464 c...

V?ra Va?ková; Vladimír Kropá?ek; Reviewer J. Buben

1974-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal  

Open Energy Info (EERE)

Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Area, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Area, California Details Activities (1) Areas (1) Regions (0) Abstract: Coso is one of several high-temperature geothermal systems associated with recent volcanic activity in the Basin and Range province. Chemical and fluid inclusion data demonstrate that production is from a narrow, asymmetric plume of thermal water that originates from a deep reservoir to the south and then flows laterally to the north. Geologic controls on the geometry of the upwelling plume were investigated using petrographic and analytical analyses of reservoir rock and vein material.

222

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...  

Open Energy Info (EERE)

Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, Usa Abstract Quantitative X-ray diffraction analysis of about 80 rhyolite and associated...

223

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...  

Open Energy Info (EERE)

Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

224

NMR tomography of the three-qubit Deutsch-Jozsa algorithm  

SciTech Connect

The optimized version of the Deutsch-Jozsa algorithm proposed by Collins et al. was implemented using the three {sup 19}F nuclear spins of 2,3,4-trifluoroaniline as qubits. To emulate the behavior of pure quantum-mechanical states pseudopure states of the ensemble were prepared prior to execution of the algorithm. Full tomography of the density matrix was employed to obtain detailed information about initial, intermediate, and final states. Information, thus obtained, was applied to optimize the pulse sequences used. It is shown that substantial improvement of the fidelity of the preparation may be achieved by compensating the effects caused by the different relaxation behavior of the different substates of the density matrix. All manipulations of the quantum states were performed under the conditions of unresolved spin-spin interactions.

Mangold, Oliver; Heidebrecht, Andreas; Mehring, Michael [2. Physikalisches Institut, University of Stuttgart, Stuttgart (Germany)

2004-10-01T23:59:59.000Z

225

Direct Sampling Method for Diffusive Optical Tomography  

E-Print Network (OSTI)

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

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

2014-10-06T23:59:59.000Z

226

Double common-path interferometer for flexible optical probe of optical coherence tomography  

E-Print Network (OSTI)

J. Fujimoto, “Optical coherence tomography,” Science 254(D. E. N. Davies, “Optical coherence-domain reflectometry: afiber common-path optical coherence tomography: sensitivity

Park, Jae Seok; Chen, Zhongping; Jeong, Myung Yung; Kim, Chang-Seok

2012-01-01T23:59:59.000Z

227

High-speed upper-airway imaging using full-range optical coherence tomography  

E-Print Network (OSTI)

Huang et al. , “Optical coherence tomography,” Science 254(endoscopic long-range optical coherence tomogra- phy,” Opt.tracking with optical coherence tomography: proof-of-

Jing, Joseph; Zhang, Jun; Loy, Anthony Chin; Wong, Brian F.; Chen, Zhongping

2012-01-01T23:59:59.000Z

228

E-Print Network 3.0 - angiography computed tomography Sample...  

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

Solutions Computed Tomography (CTCAT) 3D volume is reconstructed... ) Computer Tomography (CT): Radon-Transformation reconstructs images from projection data-profiles ...

229

XEDS STEM Tomography For 3D Chemical CharacterizationOf Nanoscale...  

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

XEDS STEM Tomography For 3D Chemical CharacterizationOf Nanoscale Particles. XEDS STEM Tomography For 3D Chemical CharacterizationOf Nanoscale Particles. Abstract: We present a...

230

E-Print Network 3.0 - artery computed tomography Sample Search...  

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

computed tomography Search Powered by Explorit Topic List Advanced Search Sample search results for: artery computed tomography Page: << < 1 2 3 4 5 > >> 1 Abstract Computed...

231

Rock climbing sub-worlds: a segmentation study  

E-Print Network (OSTI)

ROCK CLIMBING SUB-WORLDS: A SEGMENTATION STUDY A Thesis by BRANDON WAYNE RAPELJE 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 August 2004 Major Subject: Recreation, Park & Tourism Sciences ROCK CLIMBING SUB-WORLDS: A SEGMENTATION STUDY A Thesis by BRANDON WAYNE RAPELJE Submitted to Texas A&M University in partial fulfillment...

Rapelje, Brandon Wayne

2004-11-15T23:59:59.000Z

232

Comparison of linear and nonlinear acoustic probing of rock salt  

E-Print Network (OSTI)

COMPARISON OF LINEAR AND NONLINEAR ACOUSTIC PROBING OF ROCK SALT A Thesis by ALBERT MIN-HAO WANG Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August... 1980 Major Subject: Geophysics COMPARISON OF LINEAR AND NONLINEAR ACOUSTIC PROBING OF ROCK SALT A Thesis by ALBERT MIN-HAO 'RANG Approved as to style and content by: l('-/c~k~&(. Chairman o Comm ' ee Member) Member / I Member Head...

Wang, Albert Min-Hao

2012-06-07T23:59:59.000Z

233

Rock glacier monitoring with low-cost GPS  

E-Print Network (OSTI)

moving stations on rock glacier Low-cost L1 GPS receivers (blox) Power source: solar panels Local data Rock glacier GPS antennaGPS antenna Solar panelSolar panel Box incl.Box incl. -GPS receiverData logger Instruments Solar panelSolar panel (24W, 12V, 50x50cm)(24W, 12V, 50x50cm) Costs per station: 2

234

Gedanken densities and exact constraints in density functional theory  

SciTech Connect

Approximations to the exact density functional for the exchange-correlation energy of a many-electron ground state can be constructed by satisfying constraints that are universal, i.e., valid for all electron densities. Gedanken densities are designed for the purpose of this construction, but need not be realistic. The uniform electron gas is an old gedanken density. Here, we propose a spherical two-electron gedanken density in which the dimensionless density gradient can be an arbitrary positive constant wherever the density is non-zero. The Lieb-Oxford lower bound on the exchange energy can be satisfied within a generalized gradient approximation (GGA) by bounding its enhancement factor or simplest GGA exchange-energy density. This enhancement-factor bound is well known to be sufficient, but our gedanken density shows that it is also necessary. The conventional exact exchange-energy density satisfies no such local bound, but energy densities are not unique, and the simplest GGA exchange-energy density is not an approximation to it. We further derive a strongly and optimally tightened bound on the exchange enhancement factor of a two-electron density, which is satisfied by the local density approximation but is violated by all published GGA's or meta-GGA’s. Finally, some consequences of the non-uniform density-scaling behavior for the asymptotics of the exchange enhancement factor of a GGA or meta-GGA are given.

Perdew, John P. [Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States) [Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States); Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122 (United States); Ruzsinszky, Adrienn; Sun, Jianwei [Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States)] [Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States); Burke, Kieron [Department of Chemistry and Department of Physics, University of California, Irvine, California 92697 (United States)] [Department of Chemistry and Department of Physics, University of California, Irvine, California 92697 (United States)

2014-05-14T23:59:59.000Z

235

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide  

Open Energy Info (EERE)

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Project Description Supercritical CO2 is currently becoming a more common fluid for extracting volatile oil and fragrance compounds from various raw materials that are used in perfumery. Furthermore, its use as a heat transmission fluid is very attractive because of the greater uptake capability of heat from hot reservoir rock, compared with that of water. However, one concern was the reactivity of CO2 with clay and rock minerals in aqueous and non-aqueous environments. So if this reaction leads to the formation of water-soluble carbonates, such formation could be detrimental to the integrity of wellbore infrastructure.

236

Scattered Neutron Tomography Based on A Neutron Transport Inverse Problem  

SciTech Connect

Neutron radiography and computed tomography are commonly used techniques to non-destructively examine materials. Tomography refers to the cross-sectional imaging of an object from either transmission or reflection data collected by illuminating the object from many different directions.

William Charlton

2007-07-01T23:59:59.000Z

237

Neutron Stimulated Emission Computed Tomography of Stable Isotopes  

E-Print Network (OSTI)

Neutron Stimulated Emission Computed Tomography of Stable Isotopes Carey E. Floyd Jr.*ab , Calvin North Carolina Keywords: imaging, neutrons, tomography, spectroscopy ABSTRACT Here we report on the development of a new molecular imaging technique using inelastic scattering of fast neutrons. Earlier studies

238

Measuring the Kuroshio Current with ocean acoustic tomography Naokazu Taniguchia)  

E-Print Network (OSTI)

Measuring the Kuroshio Current with ocean acoustic tomography Naokazu Taniguchia) Graduate School 29 April 2013) Ocean current profiling using ocean acoustic tomography (OAT) was conducted proportional to temperature) and current in the ocean (Munk et al., 1995). Other than coastal sea studies (e

Frandsen, Jannette B.

239

Multilevel bioluminescence tomography based on radiative transfer equation  

E-Print Network (OSTI)

Multilevel bioluminescence tomography based on radiative transfer equation Part 2: total variation with both l1 and total- variation norm for bioluminescence tomography based on radiative transfer equation, Radiative Transfer (Dover Publications, 1960). 14. K. M. Case and P. F. PF Zweifel, Linear Transport Theory

Soatto, Stefano

240

Dynamic Computed Tomography, an algebraic reconstruction method with  

E-Print Network (OSTI)

in Grenoble. Finally, I wish to thank the people from the department of International Relations of University whilst improving accuracy. Some of its cur- rect research projects are about dynamic tomography . . . . . . . . . . . . . . . . . . . . . 9 2 Basic tools for Computed Tomography 10 2.1 The Radon Transform

Promayon, Emmanuel

Note: This page contains sample records for the topic "tomography rock density" 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

Total variation based Fourier reconstruction and regularization for computer tomography  

E-Print Network (OSTI)

of the reconstruted image. Insufficiency of data may be caused by the undersampling of projections, by the limitedTotal variation based Fourier reconstruction and regularization for computer tomography Xiao. Index Terms-- Computer tomography, reconstruction, regular- ization, iterative method, Fourier method

Zhang, Xiaoqun

242

Full-wavelet approach for fluorescence diffuse optical tomography  

E-Print Network (OSTI)

Full-wavelet approach for fluorescence diffuse optical tomography with structured illumination Leonardo da Vinci 32, I-20133 Milan, Italy 3 Centre for Medical Image Computing, University College London); published October 28, 2010 We present a fast reconstruction method for fluorescence optical tomography

Boyer, Edmond

243

Raw Data Compression in Computed Tomography: Noise Shaping  

E-Print Network (OSTI)

Raw Data Compression in Computed Tomography: Noise Shaping Yao Xie (team member: Adam Wang) Project.1 Background X-ray computed tomography (CT) builds on the physical principles of radiography. It uses multiple ring that has a limited data transfer rate. Compression can be used to reduce the data rate through

Xie, Yao

244

Propagation Beam Consideration for 3D THz Computed Tomography  

E-Print Network (OSTI)

Propagation Beam Consideration for 3D THz Computed Tomography B. Recur, 1, J.P. Guillet, 2 I. Manek, "Refraction losses in terahertz computed tomography," Opt. Commun. 283, 2050­2055 (2010). 8. S. Nadar, H, "Accelerated image reconstruction using ordered subsets of projection data," IEEE Trans. Med. Imaging 13, 601

Boyer, Edmond

245

Registration of Planar Film Radiographs with Computed Tomography  

E-Print Network (OSTI)

Registration of Planar Film Radiographs with Computed Tomography Lisa M. Gottesfeld Brown lisabHigh University Bethlehem, PA 18015 Abstract In this paper we describe a method to register Computed Tomography, high resolution, three dimensional, structural med- ical images, such as data from X-ray computed

Boult, Terrance E.

246

Cone-based electrical resistivity tomography Adam Pidlisecky1  

E-Print Network (OSTI)

Cone-based electrical resistivity tomography Adam Pidlisecky1 , Rosemary Knight1 , and Eldad Haber2 and transport of the contaminants. Borehole- based electrical resistivity tomography ERT is a geophysical meth. The measurements yield values of resistance that can be inverted to determine the subsurface electrical

Knight, Rosemary

247

Geotechnical Features of the Volcanic Rocks Related to the Arteara Rock Avalanche in Gran Canaria (Canary Islands, Spain)  

Science Journals Connector (OSTI)

The Arteara rock avalanche is developed in the Fataga Group which is related to the first volcanic stage in the Gran Canaria Island (8.6–13.3 Ma)....

Martín Jesús Rodríguez-Peces; Jorge Yepes Temiño…

2013-01-01T23:59:59.000Z

248

On Two-Phase Relative Permeability and Capillary Pressure of Rough-Walled Rock Fractures  

E-Print Network (OSTI)

in Single Rock Joints", Licentiate Thesis, Lulea Universityof Technology, Lulea, Sweden. Heiba, A. A. , Sahimi, M. ,

Pruess ed, K.; Tsang, Y.W.

1989-01-01T23:59:59.000Z

249

MECHANICAL DEGRADATION OF EMPLACEMENT DRIFTS AT YUCCA MOUNTAIN - A CASE STUDY IN ROCK MECHANICS, PART 1: NONLITHOPHYSAL ROCK, PART 2: LITHOPHYSAL ROCK  

SciTech Connect

This paper outlines rock mechanics investigations associated with mechanical degradation of planned emplacement drifts at Yucca Mountain, which is the designated site for a US high-level nuclear waste repository. The factors leading to drift degradation include stresses from the overburden, stresses induced by the heat released from the emplaced waste, stresses due to seismically related ground motions, and time-dependent strength degradation. The welded tuff emplacement horizon consists of two groups of rock with distinct engineering properties: nonlithophysal units and lithophysal units, based on the relative proportion of lithophysal cavities. Part I of the paper concentrates on the generally hard, strong, and fractured nonlithophysal rock. The degradation behavior of the tunnels in the nonlithophysal rock is controlled by the occurrence of keyblocks. A statistically equivalent fracture model was generated based on extensive underground fracture mapping data from the Exploratory Studies Facility at Yucca Mountain. Three-dimensional distinct block analyses, generated with the fracture patterns randomly selected from the fracture model, were developed with the consideration of in situ, thermal, seismic loads. In this study, field data, laboratory data, and numerical analyses are well integrated to provide a solution for the unique problem of modeling drift degradation throughout the regulatory period for repository performance.

M. Lin, D. Kicker, B. Damjanac, M. Board, and M. Karakouzian

2006-02-27T23:59:59.000Z

250

High Energy Density Capacitors  

SciTech Connect

BEEST Project: Recapping is developing a capacitor that could rival the energy storage potential and price of today’s best EV batteries. When power is needed, the capacitor rapidly releases its stored energy, similar to lightning being discharged from a cloud. Capacitors are an ideal substitute for batteries if their energy storage capacity can be improved. Recapping is addressing storage capacity by experimenting with the material that separates the positive and negative electrodes of its capacitors. These separators could significantly improve the energy density of electrochemical devices.

None

2010-07-01T23:59:59.000Z

251

2 INVESTIGATION OF CRUDE OIL/BRINE/ROCK INTERACTION 2.1 EXPERIMENTAL STUDY OF CRUDE/BRINE/ROCK INTERACTION AT  

E-Print Network (OSTI)

INTERACTION AT RESERVOIR CONDITIONS 2.1.1 Introduction In the previous section, the fluid/rock interactions in this section and expand the understanding of the interactions of the Spraberry reservoir rock, oil and brine, brine displacement and rock wettability using low permeability Spraberry cores. A schematic

Schechter, David S.

252

1.4 PETROPHYSICS: Combined Rock and Fluid Character Integration of geological and petrophysical data allows development of a rock-fluid model for  

E-Print Network (OSTI)

the different rock types that comprise the subject reservoirs, marginal reservoirs and non-reservoir rocks). Analytical techniques used to develop this model include porosity-permeability analysis of core plug samples.4.2.2.1 Permeability determination with Nitrogen Flow Through Rock Type: Core plug samples of 1 in. and 1.5-in

Schechter, David S.

253

Potential for tunneling based on rock and soil melting. Abstracts  

SciTech Connect

The rock-melting drill was invented at Los Alamos Scientific Laboratory in 1960. Electrically heated, laboratory-scale drills were subsequently shown to penetrate igneous rocks at usefully high rates, with moderate power consumptions. The development of compact nuclear reactors and of heat pipes now makes possible the extension of this technology to much larger melting penetrators, potentially capable of producing holes up to several meters in diameter and several tens of kilometers long or deep. Development of a rapid, versatile, economical method of boring large, long shafts and tunnels offers solutions to many of man's most urgent ecological, scientific, raw-materials, and energy-supply problems. A melting method appears to be the most promising and flexible means of producing such holes. It is relatively insensitive to the composition, hardness, structure, and temperature of the rock, and offers the possibilities of producing self-supporting, glass-lined holes in almost any formation and (using a technique called lithofracturing) of eliminating the debris-removal problem by forcing molten rock into cracks created in the bore wall. Large rock-melting penetrators, called Electric Subterrenes or Nuclear Subterrenes according to the energy source used, are discussed in this report, together with problems anticipated in their development. It is concluded that this development is within the grasp of present technology.

Rowley, J.C.

1985-01-01T23:59:59.000Z

254

Proceedings of the scientific visit on crystalline rock repository development.  

SciTech Connect

A scientific visit on Crystalline Rock Repository Development was held in the Czech Republic on September 24-27, 2012. The visit was hosted by the Czech Radioactive Waste Repository Authority (RAWRA), co-hosted by Sandia National Laboratories (SNL), and supported by the International Atomic Energy Agency (IAEA). The purpose of the visit was to promote technical information exchange between participants from countries engaged in the investigation and exploration of crystalline rock for the eventual construction of nuclear waste repositories. The visit was designed especially for participants of countries that have recently commenced (or recommenced) national repository programmes in crystalline host rock formations. Discussion topics included repository programme development, site screening and selection, site characterization, disposal concepts in crystalline host rock, regulatory frameworks, and safety assessment methodology. Interest was surveyed in establishing a %E2%80%9Cclub,%E2%80%9D the mission of which would be to identify and address the various technical challenges that confront the disposal of radioactive waste in crystalline rock environments. The idea of a second scientific visit to be held one year later in another host country received popular support. The visit concluded with a trip to the countryside south of Prague where participants were treated to a tour of the laboratory and underground facilities of the Josef Regional Underground Research Centre.

Mariner, Paul E.; Hardin, Ernest L.; Miksova, Jitka [RAWRA, Czech Republic

2013-02-01T23:59:59.000Z

255

A-type granites and related rocks: Petrogenesis and classification  

Science Journals Connector (OSTI)

Abstract The problems of identification of A-type granitoids are analyzed. These rocks occur in different geodynamic settings. Owing to their mantle nature, they show distinct REE specialization. These are acid intrusive rocks, whose volcanic products are of crucial scientific and practical significance. However, neither the great number of proposed classification schemes and diagrams, including those based on expensive analytical data, nor hot scientific discussions of their identification and the ambiguity of the term A-granitoids helped to determine their classification features in full measure. A principally new discriminant diagram is proposed for the classification of igneous A-type rocks, based on the analysis of earlier obtained results and the petrochemical composition of these rocks. A comparative analysis of subdivision of granites and related felsic volcanic rocks (SiO2 > 67 wt.%), based on the ternary (Na2O + K2O)–Fe2O3* × 5–(CaO + MgO) × 5 and other widely applied diagrams, has shown the advantage of the proposed discriminant diagram for the classification of A-type granitoids from different geodynamic settings.

A.V. Grebennikov

2014-01-01T23:59:59.000Z

256

PARKER-HEADGATE ROCK & PARKER-GILA  

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

PARKER-HEADGATE ROCK & PARKER-GILA PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas Figure 1. Project Location Project Location j PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas Figure 2a. Project Area (North) Staging Area #4 Structure 3/5 Structure 3/6 Structure 3/4 Structure 3/7 Structure 3/5 Structure 3/6 PARKER-HEADGATE ROCK 161-kV TRANSMISSION LINE PARKER-GILA 161-kV TRANSMISSION LINE Structure 4/6 Legal Description N N 1:24000 scale 1:24000 scale Section Township Range 17 20 2 N 27 E 31 11 N 18 W 6 10 N USGS TOPO MAP: Cross Roads, Arizona-California USGS TOPO MAP: Cross Roads, Arizona-California PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas

257

Performance dependence of hybrid x-ray computed tomography/fluorescence molecular  

E-Print Network (OSTI)

Performance dependence of hybrid x-ray computed tomography/fluorescence molecular tomography imaging systems combining x-ray computed tomography (CT) and fluorescence tomography can im- prove Ntziachristos2 1 Department of Electrical and Computer Engineering, Northeastern University, 360 Huntington Ave

Miller, Eric

258

Compact conscious animal positron emission tomography scanner  

DOE Patents (OSTI)

A method of serially transferring annihilation information in a compact positron emission tomography (PET) scanner includes generating a time signal for an event, generating an address signal representing a detecting channel, generating a detector channel signal including the time and address signals, and generating a composite signal including the channel signal and similarly generated signals. The composite signal includes events from detectors in a block and is serially output. An apparatus that serially transfers annihilation information from a block includes time signal generators for detectors in a block and an address and channel signal generator. The PET scanner includes a ring tomograph that mounts onto a portion of an animal, which includes opposing block pairs. Each of the blocks in a block pair includes a scintillator layer, detection array, front-end array, and a serial encoder. The serial encoder includes time signal generators and an address signal and channel signal generator.

Schyler, David J. (Bellport, NY); O'Connor, Paul (Bellport, NY); Woody, Craig (Setauket, NY); Junnarkar, Sachin Shrirang (Sound Beach, NY); Radeka, Veljko (Bellport, NY); Vaska, Paul (Sound Beach, NY); Pratte, Jean-Francois (Stony Brook, NY); Volkow, Nora (Chevy Chase, MD)

2006-10-24T23:59:59.000Z

259

Measuring momentum for charged particle tomography  

DOE Patents (OSTI)

Methods, apparatus and systems for detecting charged particles and obtaining tomography of a volume by measuring charged particles including measuring the momentum of a charged particle passing through a charged particle detector. Sets of position sensitive detectors measure scattering of the charged particle. The position sensitive detectors having sufficient mass to cause the charged particle passing through the position sensitive detectors to scatter in the position sensitive detectors. A controller can be adapted and arranged to receive scattering measurements of the charged particle from the charged particle detector, determine at least one trajectory of the charged particle from the measured scattering; and determine at least one momentum measurement of the charged particle from the at least one trajectory. The charged particle can be a cosmic ray-produced charged particle, such as a cosmic ray-produced muon. The position sensitive detectors can be drift cells, such as gas-filled drift tubes.

Morris, Christopher (Los Alamos, NM); Fraser, Andrew Mcleod (Los Alamos, NM); Schultz, Larry Joe (Los Alamos, NM); Borozdin, Konstantin N. (Los Alamos, NM); Klimenko, Alexei Vasilievich (Maynard, MA); Sossong, Michael James (Los Alamos, NM); Blanpied, Gary (Lexington, SC)

2010-11-23T23:59:59.000Z

260

High energy neutron Computed Tomography developed  

E-Print Network (OSTI)

be observed behind high-density materials, such as depleted uranium or tungsten. Comparison of the high (bottom half) and foam (center teeth) phantom could be viewed through 76 mm of depleted uranium. Some ~ 3

Note: This page contains sample records for the topic "tomography rock density" 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

Robust statistical reconstruction for charged particle tomography  

DOE Patents (OSTI)

Systems and methods for charged particle detection including statistical reconstruction of object volume scattering density profiles from charged particle tomographic data to determine the probability distribution of charged particle scattering using a statistical multiple scattering model and determine a substantially maximum likelihood estimate of object volume scattering density using expectation maximization (ML/EM) algorithm to reconstruct the object volume scattering density. The presence of and/or type of object occupying the volume of interest can be identified from the reconstructed volume scattering density profile. The charged particle tomographic data can be cosmic ray muon tomographic data from a muon tracker for scanning packages, containers, vehicles or cargo. The method can be implemented using a computer program which is executable on a computer.

2013-10-08T23:59:59.000Z

262

Magnified Weak Lensing Cross Correlation Tomography  

SciTech Connect

This project carried out a weak lensing tomography (WLT) measurement around rich clusters of galaxies. This project used ground based photometric redshift data combined with HST archived cluster images that provide the WLT and cluster mass modeling. The technique has already produced interesting results (Guennou et al, 2010,Astronomy & Astrophysics Vol 523, page 21, and Clowe et al, 2011 to be submitted). Guennou et al have validated that the necessary accuracy can be achieved with photometric redshifts for our purposes. Clowe et al titled "The DAFT/FADA survey. II. Tomographic weak lensing signal from 10 high redshift clusters," have shown that for the **first time** via this purely geometrical technique, which does not assume a standard rod or candle, that a cosmological constant is **required** for flat cosmologies. The intent of this project is not to produce the best constraint on the value of the dark energy equation of state, w. Rather, this project is to carry out a sustained effort of weak lensing tomography that will naturally feed into the near term Dark Energy Survey (DES) and to provide invaluable mass calibration for that project. These results will greatly advance a key cosmological method which will be applied to the top-rated ground-based project in the Astro2020 decadal survey, LSST. Weak lensing tomography is one of the key science drivers behind LSST. CO-I Clowe is on the weak lensing LSST committee, and senior scientist on this project, at FNAL James Annis, plays a leading role in the DES. This project has built on successful proposals to obtain ground-based imaging for the cluster sample. By 1 Jan, it is anticipated the project will have accumulated complete 5-color photometry on 30 (or about 1/3) of the targeted cluster sample (public webpage for the survey is available at http://cencos.oamp.fr/DAFT/ and has a current summary of the observational status of various clusters). In all, the project has now been awarded the equivalent of over 60 nights on 4-m class telescopes, which gives concrete evidence of strong community support for this project. The WLT technique is based on the dependence of the gravitational shear signal on the angular diameter distances between the observer, the lens, and the lensed galaxy to measure cosmological parameters. By taking the ratio of measured shears of galaxies with different redshifts around the same lens, one obtains a measurement of the ratios of the angular diameter distances involved. Making these observations over a large range of lenses and background galaxy redshifts will measure the history of the expansion rate of the universe. Because this is a purely geometric measurement, it is insensitive to any form of evolution of objects or the necessity to understand the physics in the early universe. Thus, WLT was identified by the Dark Energy Task Force as perhaps the best method to measure the evolution of DE. To date, however, the conjecture of the DETF has not been experimentally verified, but will be by the proposed project. The primary reason for the lack of tomography measurements is that one must have an exceptional data-set to attempt the measurement. One needs both extremely good seeing (or space observations) in order to minimize the point spread function smearing corrections on weak lensing shear measurements and deep, multi-color data, from B to z, to measure reliable photometric redshifts of the background galaxies being lensed (which are typically too faint to obtain spectroscopic redshifts). Because the entire process from multi-drizzling the HST images, and then creating shear maps, to gathering the necessary ground based observations, to generating photo-zs and then carrying out the tomography is a complicated task, until the creation of our team, nobody has taken the time to connect all the levels of expertise necessary to carry out this project based on HST archival data. Our data are being used in 2 Ph.D. theses. Kellen Murphy, at Ohio University, is using the tomography data along with simulations in a thesis expected to be completed in Jun

Ulmer, Melville P., Clowe, Douglas I.

2010-11-30T23:59:59.000Z

263

Charge Density Wave Compounds  

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

Fisher Research Group Fisher Research Group Layered Chalcogenides 29 February 2008 Controlling the Wave by Brad Plummer, SLAC Communications Stanford University researchers working in part at SSRL have discovered a novel set of properties pertaining to a compound of materials called tritellurides. These compounds, composed of three atoms of tellurium and a single atom of one of the rare earth elements, demonstrate unique electronic properties that can be controlled by altering the temperature of the material. The tritellurides display phenomena known as charge density waves (CDW). In a normal conductive metal, electrons persist in a "sea" wherein they are evenly distributed and equally available, or conductive. A CDW occurs under certain circumstances and causes the electrons to clump together, lowering their availability, and thereby lowering the compound's conductivity. Tellurium, when crystallized into quasi-two-dimensional planes and combined with rare earth elements, produces a material with CDWs that can be manipulated and controlled.

264

Nuclear energy density optimization  

Science Journals Connector (OSTI)

We carry out state-of-the-art optimization of a nuclear energy density of Skyrme type in the framework of the Hartree-Fock-Bogoliubov theory. The particle-hole and particle-particle channels are optimized simultaneously, and the experimental data set includes both spherical and deformed nuclei. The new model-based, derivative-free optimization algorithm used in this work has been found to be significantly better than standard optimization methods in terms of reliability, speed, accuracy, and precision. The resulting parameter set unedf0 results in good agreement with experimental masses, radii, and deformations and seems to be free of finite-size instabilities. An estimate of the reliability of the obtained parameterization is given, based on standard statistical methods. We discuss new physics insights offered by the advanced covariance analysis.

M. Kortelainen; T. Lesinski; J. Moré; W. Nazarewicz; J. Sarich; N. Schunck; M. V. Stoitsov; S. Wild

2010-08-13T23:59:59.000Z

265

Black Rock III Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Black Rock III Geothermal Project Black Rock III Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Black Rock III Geothermal Project Project Location Information Coordinates The following coordinate was not recognized: 33°19'59" N, 115°50'3 W.The following coordinate was not recognized: 33°19'59" N, 115°50'3 W. Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

266

Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Woldegabriel & Goff, 1992) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Woldegabriel & Goff, 1992) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown Notes Useful for age determinations - not indicated is useful for exploration. References Giday WoldeGabriel, Fraser Goff (1992) K-Ar Dates Of Hydrothermal

267

3rd Rock Systems and Technologies | Open Energy Information  

Open Energy Info (EERE)

Rock Systems and Technologies Rock Systems and Technologies Jump to: navigation, search Name 3rd Rock Systems and Technologies Place Burlingame, California Zip 94010 Sector Renewable Energy, Services Product Provides proven renewable energy technologies and consulting services to residential, commercial, and industrial clients. Coordinates 38.753055°, -95.834619° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.753055,"lon":-95.834619,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

268

AltaRock Energy Inc | Open Energy Information  

Open Energy Info (EERE)

AltaRock Energy Inc AltaRock Energy Inc Jump to: navigation, search Name AltaRock Energy Address 7900 E Green Lake Drive N Place Seattle, Washington Zip 98103 Sector Geothermal energy Product Creates geothermal energy reservoirs, develops geothermal facilities Website http://www.altarockenergy.com/ Coordinates 47.6855466°, -122.3364827° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.6855466,"lon":-122.3364827,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

269

Chimney Rock Public Power Dist | Open Energy Information  

Open Energy Info (EERE)

Chimney Rock Public Power Dist Chimney Rock Public Power Dist Jump to: navigation, search Name Chimney Rock Public Power Dist Place Nebraska Utility Id 3495 Utility Location Yes Ownership P NERC Location MRO NERC MRO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png ELECTRIC THERMAL STORAGE Commercial GENERAL SEASONAL Commercial IRRIGATION SERVICE Single Phase Commercial IRRIGATION SERVICE Three Phase Commercial IRRIGATION STANDBY RATE, Single Phase Commercial IRRIGATION STANDBY RATE, Three Phase Commercial LARGE POWER SERVICE Commercial RESIDENTIAL SERVICE AND SEASONAL SERVICE Residential

270

City of Rock Hill, South Carolina (Utility Company) | Open Energy  

Open Energy Info (EERE)

Rock Hill, South Carolina (Utility Company) Rock Hill, South Carolina (Utility Company) Jump to: navigation, search Name City of Rock Hill Place South Carolina Utility Id 16195 Utility Location Yes Ownership M NERC Location SERC Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png 175 Watt HPS lighting Lighting Economic Development Rate (Schedule EDR -1) Commercial Economic Development Rate (Schedule EDR -2) Industrial Flood Lighting Rate 1000 Watt HPS Lighting Flood Lighting Rate 400 Watt HPS Lighting General Service/ Non Demand (Schedule GS) Commercial General Service/Demand (Schedule GD) Industrial

271

Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions | Open  

Open Energy Info (EERE)

Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Jump to: navigation, search Geothermal Lab Call Projects for Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":200,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026 further results","default":"","geoservice":"google","zoom":false,"width":"600px","height":"350px","centre":false,"layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","icon":"","visitedicon":"","forceshow":true,"showtitle":true,"hidenamespace":false,"template":false,"title":"","label":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"locations":[{"text":"

272

Density Functional Theory for Superconductors  

E-Print Network (OSTI)

Density Functional Theory for Superconductors N. N. LATHIOTAKIS,1,2 M. A. L. MARQUES,1,2,3 M. LU; density functional theory; critical temperature; exchange and correlation; phonon and theoretical chemistry is density functional theory (DFT). Its foundations were established in the mid-1960s

Gross, E.K.U.

273

Predicting the transport properties of sedimentary rocks from microstructure  

SciTech Connect

Understanding transport properties of sedimentary rocks, including permeability, relative permeability, and electrical conductivity, is of great importance for petroleum engineering, waste isolation, environmental restoration, and other applications. These transport properties axe controlled to a great extent by the pore structure. How pore geometry, topology, and the physics and chemistry of mineral-fluid and fluid-fluid interactions affect the flow of fluids through consolidated/partially consolidated porous media are investigated analytically and experimentally. Hydraulic and electrical conductivity of sedimentary rocks are predicted from the microscopic geometry of the pore space. Cross-sectional areas and perimeters of individual pores are estimated from two-dimensional scanning electron microscope (SEM) photomicrographs of rock sections. Results, using Berea, Boise, Massilon, and Saint-Gilles sandstones show close agreement between the predicted and measured permeabilities. Good to fair agreement is found in the case of electrical conductivity. In particular, good agreement is found for a poorly cemented rock such as Saint-Gilles sandstone, whereas the agreement is not very good for well-cemented rocks. The possible reasons for this are investigated. The surface conductance contribution of clay minerals to the overall electrical conductivity is assessed. The effect of partial hydrocarbon saturation on overall rock conductivity, and on the Archie saturation exponent, is discussed. The region of validity of the well-known Kozeny-Carman permeability formulae for consolidated porous media and their relationship to the microscopic spatial variations of channel dimensions are established. It is found that the permeabilities predicted by the Kozeny-Carman equations are valid within a factor of three of the observed values methods.

Schlueter, E.M.

1995-01-01T23:59:59.000Z

274

SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES  

SciTech Connect

As part of our study on ''Relationships between seismic properties and rock microstructure'', we have (1) Studied relationships between velocity and permeability. (2) Used independent experimental methods to measure the elastic moduli of clay minerals as functions of pressure and saturation. (3) Applied different statistical methods for characterizing heterogeneity and textures from scanning acoustic microscope (SAM) images of shale microstructures. (4) Analyzed the directional dependence of velocity and attenuation in different reservoir rocks (5) Compared Vp measured under hydrostatic and non-hydrostatic stress conditions in sands. (6) Studied stratification as a source of intrinsic anisotropy in sediments using Vp and statistical methods for characterizing textures in sands.

Gary Mavko

2003-10-01T23:59:59.000Z

275

Ozone generation by rock fracture: Earthquake early warning?  

SciTech Connect

We report the production of up to 10 ppm ozone during crushing and grinding of typical terrestrial crust rocks in air, O{sub 2} and CO{sub 2} at atmospheric pressure, but not in helium or nitrogen. Ozone is formed by exoelectrons emitted by high electric fields, resulting from charge separation during fracture. The results suggest that ground level ozone produced by rock fracture, besides its potential health hazard, can be used for early warning in earthquakes and other catastrophes, such as landslides or land shifts in excavation tunnels and underground mines.

Baragiola, Raul A.; Dukes, Catherine A.; Hedges, Dawn [Engineering Physics, University of Virginia, Charlottesville, Virginia 22904 (United States)

2011-11-14T23:59:59.000Z

276

Microfractures in rocks from two geothermal areas | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Microfractures in rocks from two geothermal areas Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Microfractures in rocks from two geothermal areas Details Activities (2) Areas (2) Regions (0) Abstract: Core samples from the Dunes, California, and Raft River, Idaho, geothermal areas show diagenesis superimposed on episodic fracturing and fracture sealing. The minerals that fill fractures show significant temporal variations. Sealed fractures can act as barriers to fluid flow. Sealed fractures often mark boundaries between regions of significantly

277

Three-Dimensional Thermal Tomography Advances Cancer Treatment...  

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

Three-Dimensional Thermal Tomography Advances Cancer Treatment (ANL-IN-07-170) Argonne National Laboratory Contact ANL About This Technology

Change in temperature over time...

278

Traveltime tomography in anisotropic media—I. Theory  

Science Journals Connector (OSTI)

......Traveltime tomography in anisotropic media-II. Application...technique for weakly anisotropic velocity, Geophysics...Velocity anisotropy in shale determined from crosshole...technique for weakly anisotropic velocity, Geophysics...Velocity anisotropy in shale determined from crosshole......

C. H. Chapman; R. G. Pratt

1992-04-01T23:59:59.000Z

279

Functional lung imaging in humans using Positron Emission Tomography  

E-Print Network (OSTI)

This thesis deals with a method of functional lung imaging using Positron Emission Tomography (PET). In this technique, a radioactive tracer, nitrogen-13, is dissolved in saline solution, and injected into a peripheral ...

Layfield, Dominick, 1971-

2003-01-01T23:59:59.000Z

280

Electrical capacitance volume tomography (ECVT) applied to bubbling fluid beds  

SciTech Connect

These presentation visuals illustrate the apparatus and method for applying Electrical Capacitance Volume Tomography (ECVT) to bubbling fluid beds to their solid fraction and bubble properties. Results are compared to estimated values.

Weber, J., Mei, J.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Scattered neutron tomography based on a neutron transport problem  

E-Print Network (OSTI)

scattering objects because it does not adequately account for the scattering component of the neutron beam intensity exiting the sample. We proposed a new method of computed tomography which employs an inverse problem analysis of both the transmitted...

Scipolo, Vittorio

2005-11-01T23:59:59.000Z

282

NEURAL NETWORKS FOR DISCRETE TOMOGRAPHY K.J. Batenburg a  

E-Print Network (OSTI)

NEURAL NETWORKS FOR DISCRETE TOMOGRAPHY K.J. Batenburg a W.A. Kosters b a Mathematical Institute of crystalline solids at atomic resolution from electron microscopic images can be considered the "holy grail

Kosters, Walter

283

Thickness Estimation with Optical Coherence Tomography and Statistical Decision Theory  

Science Journals Connector (OSTI)

We implement a maximum-likelihood (ML) estimator to interpret Optical Coherence Tomography (OCT) data, based on a Fourier-Domain OCT and a two-interface tear film model. We use the...

Huang, Jinxin; Clarkson, Eric; Kupinski, Matthew; Rolland, Jannick P

284

Frequency comb swept lasers for optical coherence tomography  

E-Print Network (OSTI)

We demonstrate a frequency comb (FC) swept laser and a frequency comb Fourier domain mode locked (FC-FDML) laser for applications in optical coherence tomography (OCT). The fiber-based FC swept lasers operate at a sweep ...

Tsai, Tsung-Han

285

Ultrahigh speed optical coherence tomography for ophthalmic imaging applications  

E-Print Network (OSTI)

Optical coherence tomography (OCT) is a non-contact, non-invasive, micron-scale optical imaging technology that has become a standard clinical tool in ophthalmology. Fourier domain OCT detection methods have enabled higher ...

Liu, Jonathan Jaoshin

2014-01-01T23:59:59.000Z

286

Breast ultrasound tomography with total-variation regularization  

SciTech Connect

Breast ultrasound tomography is a rapidly developing imaging modality that has the potential to impact breast cancer screening and diagnosis. A new ultrasound breast imaging device (CURE) with a ring array of transducers has been designed and built at Karmanos Cancer Institute, which acquires both reflection and transmission ultrasound signals. To extract the sound-speed information from the breast data acquired by CURE, we have developed an iterative sound-speed image reconstruction algorithm for breast ultrasound transmission tomography based on total-variation (TV) minimization. We investigate applicability of the TV tomography algorithm using in vivo ultrasound breast data from 61 patients, and compare the results with those obtained using the Tikhonov regularization method. We demonstrate that, compared to the Tikhonov regularization scheme, the TV regularization method significantly improves image quality, resulting in sound-speed tomography images with sharp (preserved) edges of abnormalities and few artifacts.

Huang, Lianjie [Los Alamos National Laboratory; Li, Cuiping [KARMANOS CANCER INSTIT.; Duric, Neb [KARMANOS CANCER INSTIT

2009-01-01T23:59:59.000Z

287

Computational Inversion of Electron Tomography Images -Gradient Flows  

E-Print Network (OSTI)

Computational Inversion of Electron Tomography Images Using L2 -Gradient Flows Guoliang Xu 1) Ming Computing Institute of Computational Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100190, China 2) Department of Computer Sciences and Institute

Texas at Austin, University of

288

Geohydromechanical Processes in the Excavation Damaged Zone in Crystalline Rock, Rock Salt, and Indurated and Plastic Clays  

SciTech Connect

The creation of an excavation disturbed zone or excavation damaged zone is expected around all man-made openings in geologic formations. Macro- and micro-fracturing, and in general a redistribution of in situ stresses and rearrangement of rock structures, will occur in this zone, resulting in drastic changes of permeability to flow, mainly through the fractures and cracks induced by excavation. Such an EDZ may have significant implications for the operation and long-term performance of an underground nuclear waste repository. Various issues of concern need to be evaluated, such as processes creating fractures in the excavation damaged zone, the degree of permeability increase, and the potential for sealing or healing (with permeability reduction) in the zone. In recent years, efforts along these lines have been made for a potential repository in four rock types-crystalline rock, salt, indurated clay, and plastic clay-and these efforts have involved field, laboratory, and theoretical studies. The present work involves a synthesis of the ideas and issues that emerged from presentations and discussions on EDZ in these four rock types at a CLUSTER Conference and Workshop held in Luxembourg in November, 2003. First, definitions of excavation disturbed and excavation damaged zones are proposed. Then, an approach is suggested for the synthesis and intercomparison of geohydromechanical processes in the EDZ for the four rock types (crystalline rock, salt, indurated clay, and plastic clay). Comparison tables of relevant processes, associated factors, and modeling and testing techniques are developed. A discussion of the general state-of-the-art and outstanding issues are also presented. A substantial bibliography of relevant papers on the subject is supplied at the end of the paper.

Tsang, Chin-Fu; Bernier, Frederic; Davies, Christophe

2004-06-20T23:59:59.000Z

289

Quantification of airway thickness changes in smoke-inhalation injury using in-vivo 3-D endoscopic frequency-domain optical coherence tomography  

E-Print Network (OSTI)

J. G. Fujimoto, “Optical coherence tomography,” Science 254(endomicroscopy using optical coherence tomography,” Nat.Fourier domain optical coherence tomography,” Opt. Express

2011-01-01T23:59:59.000Z

290

Roth Rock Wind Power Project | Open Energy Information  

Open Energy Info (EERE)

Rock Wind Power Project Rock Wind Power Project Jump to: navigation, search Name Roth Rock Wind Power Project Facility Roth Rock Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Gestamp Wind North America Developer Synergics Energy Purchaser Delmarva Power Location South of Red House MD Coordinates 39.30105°, -79.458032° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.30105,"lon":-79.458032,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

291

Lithostratigraphic Classification of Basement Rocks of the Wichita Province, Oklahoma  

Science Journals Connector (OSTI)

...Scale .bar = 5 nun; crossed nicols. (Sample WM-142 near Panther Creek, Wichita Mountains Wildlife Refuge.) 1-- t o be s...l i t i c rocks i n t h e Wichita province. f Q - The name Car.lton Rhyolite was f i r s t used by . Schoonover (19481...

Benjamin N. Powell; M. Charles Gilbert; Joseph F. Fischer

292

SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES  

SciTech Connect

As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Methods for detection of stress-induced velocity anisotropy in sands. (2) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

Gary Mavko

2003-06-30T23:59:59.000Z

293

Ion beam analyses of radionuclide migration in heterogeneous rocks  

Science Journals Connector (OSTI)

The migration of radionuclides (RN) in the environment is a topic of general interest for its implications on public health and it is an issue for the long-term safety studies of deep geological repositories (DGR) for high-level radioactive waste. The role played by colloids on RN migration is also of great concern. Diffusion and sorption are fundamental mechanisms controlling RN migration in rocks and many experimental approaches are applied to determine transport parameters for low sorbing RN in homogeneous rocks. However it is difficult to obtain relevant data for high sorbing RN or colloids for which diffusion lengths are extremely short or within heterogeneous rocks where transport might be different in different minerals. The ion beam techniques Rutherford Backscattering Spectrometry (RBS) and micro-Particle Induced X-Ray Emission (?PIXE) rarely applied in the field were selected for their micro-analytical potential to study RN diffusion and surface retention within heterogeneous rocks. Main achievements obtained during last 12 years are highlighted.

Valentino Rigato

2013-01-01T23:59:59.000Z

294

A NEW MODEL FOR PERFORMANCE PREDICTION OF HARD ROCK TBMS.  

E-Print Network (OSTI)

methods to accu- rately predict the penetration rate of a TBM in a given geology. These models are mainly, and the penetration rate. A good example of this is the Norwegian (NTH) hard rock diagnostic system and predictor penetration rate. This group of models 1.ResearchAssociakandGraduacStudentinMiningErrg.Dept. 2.Directorof

295

Dating and Context of Rock Engravings in Southern Africa  

Science Journals Connector (OSTI)

...we have recorded in the Orange-Vaal Basin (9.7 percent hu-man and 64 percent...andesite (or Dwyka tillites And shales of Permian age) are three distinct bodies of alluvium...Riet Lowe, The Distribution of Pre-historic Rock Engravings and Paintings in 1212...

Karl W. Butzer; Gerhai J. Fock; Louis Scott; Robert Stuckenrath

1979-03-23T23:59:59.000Z

296

Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan  

SciTech Connect

This document provides a monitoring plan to evaluate take as outlined in the National Marine Fisheries Service 2002 Biological Opinion for underwater blasting to remove rock from the navigation channel for the Columbia River Channel Improvement Project. The plan was prepared by the Pacific Northwest National Laboratory (PNNL) for the U.S. Army Corps of Engineers (USACE), Portland District.

Carlson, Thomas J.; Johnson, Gary E.

2010-01-29T23:59:59.000Z

297

A rock engraving made by Neanderthals in Gibraltar  

Science Journals Connector (OSTI)

...u-bordeaux.fr/TIVMI/). The 3D video was created using Autodesk 3ds Max and Adobe Premiere Pro CC. A rock engraving made by...u-bordeaux.fr/TIVMI/). The 3D video was created using Autodesk 3ds Max and Adobe Premiere Pro CC. Movie S1 Other Supporting...

Joaquín Rodríguez-Vidal; Francesco d’Errico; Francisco Giles Pacheco; Ruth Blasco; Jordi Rosell; Richard P. Jennings; Alain Queffelec; Geraldine Finlayson; Darren A. Fa; José María Gutiérrez López; José S. Carrión; Juan José Negro; Stewart Finlayson; Luís M. Cáceres; Marco A. Bernal; Santiago Fernández Jiménez; Clive Finlayson

2014-01-01T23:59:59.000Z

298

Aspects of rock physics in 4-D seismology  

SciTech Connect

In recent years, time-lapse 3-13 or 4-D seismology has been used to identify bypassed oil, to monitor steam and CO[sub 2] injection processes, and even to track the movement of the injected water. However, the feasibility of applying seismic technology to monitoring oil recovery processes and the ability to interpret the seismic results depend to a large extent on the understanding of the physics or seismic properties of the reservoir rocks and fluids. We have carried out several laboratory rock physics investigations on seismic properties of reservoir rocks in relation to oil recovery processes. Particularly, we found that seismic properties were dramatically affected by he injected steam in heavy oil sands, by the injected CO[sub 2] in carbonate rocks, and in some cases, by the injected water in light oil reservoir sands. In this paper, we present laboratory results of seismic properties of oil lands from several places in the world, including Indonesia, Canada, and of West Texas carbonates undergoing CO[sub 2] injection. We discuss the effects of reservoir geology, fluid properties, and recovery process on the seismic properties and how the laboratory results can be used in the feasibility studies and seismic interpretations. We also show examples of 4-D and cross-well seismic results from the Duri field, Indonesia, and from a West Texas carbonate field undergoing CO[sub 2] flooding.

Wang, Zhijing; Langan, R. (Chevron Petroleum Technology Co., La Habra, CA (United States)); Jenkins, S.; Bee, M.; Waite, M. (Caltex Pacific Indonesia, Rumbai (Indonesia))

1996-01-01T23:59:59.000Z

299

Aspects of rock physics in 4-D seismology  

SciTech Connect

In recent years, time-lapse 3-13 or 4-D seismology has been used to identify bypassed oil, to monitor steam and CO{sub 2} injection processes, and even to track the movement of the injected water. However, the feasibility of applying seismic technology to monitoring oil recovery processes and the ability to interpret the seismic results depend to a large extent on the understanding of the physics or seismic properties of the reservoir rocks and fluids. We have carried out several laboratory rock physics investigations on seismic properties of reservoir rocks in relation to oil recovery processes. Particularly, we found that seismic properties were dramatically affected by he injected steam in heavy oil sands, by the injected CO{sub 2} in carbonate rocks, and in some cases, by the injected water in light oil reservoir sands. In this paper, we present laboratory results of seismic properties of oil lands from several places in the world, including Indonesia, Canada, and of West Texas carbonates undergoing CO{sub 2} injection. We discuss the effects of reservoir geology, fluid properties, and recovery process on the seismic properties and how the laboratory results can be used in the feasibility studies and seismic interpretations. We also show examples of 4-D and cross-well seismic results from the Duri field, Indonesia, and from a West Texas carbonate field undergoing CO{sub 2} flooding.

Wang, Zhijing; Langan, R. [Chevron Petroleum Technology Co., La Habra, CA (United States); Jenkins, S.; Bee, M.; Waite, M. [Caltex Pacific Indonesia, Rumbai (Indonesia)

1996-12-31T23:59:59.000Z

300

Investigation of a hydraulic impact a technology in rock breaking  

E-Print Network (OSTI)

on the environment such as fly rocks, air blast, noise pollution and toxic fumes. When blasting occurs close in mining industry. The impact process of a high speed piston on liquid water, previously introduced mining practice. From the technical point of view, although explosive method is powerful, it does

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


301

Process of breaking and rendering permeable a subterranean rock mass  

DOE Patents (OSTI)

The process of the present invention involves the following steps: producing, as by hydrofracing, a substantially horizontal fracture in the subterranean rock mass to be processed; emplacing an explosive charge in the mass in spaced juxtaposed position to the fracture; enlarging the fracture to create a void space thereat, an initial lifting of the overburden, and to provide a free face juxtaposed to and arranged to cooperate with the emplaced explosive charge; and exploding the charge against the free face for fragmenting the rock and to distribute the space, thus providing fractured, pervious, rubble-ized rock in an enclosed subterranean chamber. Firing of the charge provides a further lifting of the overburden, an enlargement of the chamber and a larger void space to distribute throughout the rubble-ized rock within the chamber. In some forms of the invention an explosive charge is used to produce a transitory enlargement of the fracture, and the juxtaposed emplaced charge is fired during the critical period of enlargement of the fracture.

Lekas, Mitchell A. (Concord, CA)

1980-01-01T23:59:59.000Z

302

Fluid-Rock Interaction: A Reactive Transport Approach  

Science Journals Connector (OSTI)

...fluid-rock interaction systems as well-mixed reactors was challenged and it was shown how an...Q, Lichtner PC, Zhang D (2007) An improved lattice Boltzmann model for multicomponent...Eric H. editor CNRS-Universite Paul Sabatier, Laboratoire de Mecanisme de Transfert...

Carl I. Steefel; Kate Maher

303

Rock-physics Models for Gas-hydrate Systems Associated  

E-Print Network (OSTI)

Rock-physics Models for Gas-hydrate Systems Associated with Unconsolidated Marine Sediments Diana associated with unconsolidated marine sediments. The goals are to predict gas-hydrate concentration from intercalated with unconsolidated sediments. We show that the geometrical details of how gas hy- drates

Texas at Austin, University of

304

Characterization of Geomechanical Poroelastic Parameters in Tight Rocks  

E-Print Network (OSTI)

In petroleum engineering and geophysics, it is often assumed that the rocks are completely rigid bodies with a totally interconnected pore space and that the fluid within the pores does not affect and are independent of the strains in the porous...

Chen Valdes, Clotilde Raquel

2013-08-15T23:59:59.000Z

305

ROCK: A Robust Clustering Algorithm for Categorical Attributes  

E-Print Network (OSTI)

. For data with categorical attributes, our findings indicate that ROCK not only generates better quality The problem of data mining or knowledge discovery has become increasingly important in recent years the author was visiting Bell Laboratories. 1 #12;and Italian wine, Swiss cheese and Belgian chocolate

Pennsylvania, University of

306

1 INTRODUCTION Stressing brittle rocks leads to the development of  

E-Print Network (OSTI)

-dependent creep driven by stress corrosion and subcritical crack growth (Lockner, 1998). This creep strongly of fa- tigue and crack growth velocity function. The present experimental work was conducted at the Rock- uniform distributions of microfractures are related to fault nucleation and growth (Reches & Lockner, 1994

Ze'ev, Reches

307

MATLOC. Transient Non Lin Deformation in Fractured Rock  

SciTech Connect

MATLOC is a nonlinear, transient, two-dimensional (planer and axisymmetric), thermal stress, finite-element code designed to determine the deformation within a fractured rock mass. The mass is modeled as a nonlinear anistropic elastic material which can exhibit stress-dependent bi-linear locking behavior.

Boonlualohr, P.; Mustoe, G.; Williams, J.R.; Lester, B.H.; Huyakorn, P.S. [Geotrans Inc., (United States)

1983-04-01T23:59:59.000Z

308

Wave Generation from Explosions in Rock Cavities CANGLI LIU1  

E-Print Network (OSTI)

Wave Generation from Explosions in Rock Cavities CANGLI LIU1 and THOMAS J. AHRENS1 Abstract Ð We have developed a measurement method to monitor P- and S-waves generated from laboratory diameter cavities. Stress waves generated by the explosions were recorded within a radius of 25 cm

Stewart, Sarah T.

309

Amorphous silicon detectors in positron emission tomography  

SciTech Connect

The physics of the detection process is studied and the performances of different Positron Emission Tomography (PET) system are evaluated by theoretical calculation and/or Monte Carlo Simulation (using the EGS code) in this paper, whose table of contents can be summarized as follows: a brief introduction to amorphous silicon detectors and some useful equation is presented; a Tantalum/Amorphous Silicon PET project is studied and the efficiency of the systems is studied by Monte Carlo Simulation; two similar CsI/Amorphous Silicon PET projects are presented and their efficiency and spatial resolution are studied by Monte Carlo Simulation, light yield and time characteristics of the scintillation light are discussed for different scintillators; some experimental result on light yield measurements are presented; a Xenon/Amorphous Silicon PET is presented, the physical mechanism of scintillation in Xenon is explained, a theoretical estimation of total light yield in Xenon and the resulting efficiency is discussed altogether with some consideration of the time resolution of the system; the amorphous silicon integrated electronics is presented, total noise and time resolution are evaluated in each of our applications; the merit parameters {epsilon}{sup 2}{tau}'s are evaluated and compared with other PET systems and conclusions are drawn; and a complete reference list for Xenon scintillation light physics and its applications is presented altogether with the listing of the developed simulation programs.

Conti, M. (Istituto Nazionale di Fisica Nucleare, Pisa (Italy) Lawrence Berkeley Lab., CA (USA)); Perez-Mendez, V. (Lawrence Berkeley Lab., CA (USA))

1989-12-01T23:59:59.000Z

310

Portable Digital Radiography and Computed Tomography Manual  

SciTech Connect

This user manual describes the function and use of the portable digital radiography and computed tomography (DRCT) scanner. The manual gives a general overview of x-ray imaging systems along with a description of the DRCT system. An inventory of the all the system components, organized by shipping container, is also included. In addition, detailed, step-by-step procedures are provided for all of the exercises necessary for a novice user to successfully collect digital radiographs and tomographic images of an object, including instructions on system assembly and detector calibration and system alignment. There is also a short section covering the limited system care and maintenance needs. Descriptions of the included software packages, the DRCT Digital Imager used for system operation, and the DRCT Image Processing Interface used for image viewing and tomographic data reconstruction are given in the appendixes. The appendixes also include a cheat sheet for more experienced users, a listing of known system problems and how to mitigate them, and an inventory check-off sheet suitable for copying and including with the machine for shipment purposes.

Not Available

2007-11-01T23:59:59.000Z

311

Investigating Jet Mixing Using Electrical Resistance Tomography  

Science Journals Connector (OSTI)

Coaxial jet and side entry mixers are used in a wide range of industries for a variety of processes including precipitation polymerization and neutralization duties. Jet mixers are characterized by short contact times between the fluids and can be operated continuously or semi?batch. Coaxial and side entry jets can be designed in order to deliver rapid turbulent mixing using short sections of pipeline. As the energy required for mixing is provided by the addition stream the process?side pressure drop required for homogeneity is very low. A key design parameter for jet mixers is the mixing length the length of pipe downstream of the injection point required to achieve a given degree of homogeneity. The mixing length can be affected by the addition geometry (for example coaxial or side entry) orifice size and shape operating conditions and material properties. This paper presents the use of Electrical Resistance Tomography (ERT) to monitor jet mixing via the addition of a conductivity tracer through coaxial and side entry jets. Multiple ERT sensors are fitted along the pipe downstream of the jet addition point. The ERT sensors enable real time non?invasive measurement of conductivity within the pipe furnishing approximately 2500 conductivity measurements per ERT sensor when modeled independently in 3D. The effect of secondary (main pipe) flow rate and jet configuration on the nature of the tracer plume evolution and axial mixing is determined using this technique.

D. R. Stephenson; M. Cooke; A. Kowalski; T. A. York

2007-01-01T23:59:59.000Z

312

A Detector for Proton Computed Tomography  

SciTech Connect

Radiation therapy is a widely recognized treatment for cancer. Energetic protons have distinct features that set them apart from photons and make them desirable for cancer therapy as well as medical imaging. The clinical interest in heavy ion therapy is due to the fact that ions deposit almost all of their energy in a sharp peak – the Bragg peak- at the very end of their path. Proton beams can be used to precisely localize a tumor and deliver an exact dose to the tumor with small doses to the surrounding tissue. Proton computed tomography (pCT) provides direct information on the location on the target tumor, and avoids position uncertainty caused by treatment planning based on imaging with X-ray CT. The pCT project goal is to measure and reconstruct the proton relative stopping power distribution directly in situ. To ensure the full advantage of cancer treatment with 200 MeV proton beams, pCT must be realized.

Blazey, G.; et al.,

2013-12-06T23:59:59.000Z

313

Palaeomagnetism and Potassium-Argon Ages of Volcanic Rocks of Ngorongoro Caldera, Tanzania  

Science Journals Connector (OSTI)

......Volcanic Rocks of Ngorongoro Caldera, Tanzania* * Publication authorized by the Director...south-west wall of Ngorongoro caldera, Tanzania. The lowest three lavas are normally...Volcanic Rocks of Ngorongoro Caldera, Tanzania* C. S. Gromme, T. A. Reilly, A......

C. S. Grommé; T. A. Reilly; A. E. Mussett; R. L. Hay

1971-01-01T23:59:59.000Z

314

New techniques in rock mass classification: application to welded tuffs at the Nevada Yucca Mountain  

Science Journals Connector (OSTI)

Many rock mass classification systems exist to assist the engineer in assessing the rock support requirements for underground design. On-going research in this area is directed at attempting to utilize the fracta...

R. J. Watters; J. R. Carr; D. M. Chuck

1990-10-01T23:59:59.000Z

315

Transport and seismoelectric properties of porous permeable rock : numerical modeling and laboratory measurements  

E-Print Network (OSTI)

The objective of this thesis is to better understand the transport and seismoelectric (SE) properties of porous permeable rock. Accurate information of rock transport properties, together with pore geometry, can aid us to ...

Zhan, Xin, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

316

E-Print Network 3.0 - acid volcano-plutonic rocks Sample Search...  

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

the first of a long string of bad jokes, and start looking at rocks. Get yer hiking boots ready. Purpose... will be placed on the field relationships of the various rock units...

317

Measurement of thermal properties of select intact and weathered granulites and their relationship to rock properties  

Science Journals Connector (OSTI)

...in hard rock: Renewable Energy, 28 , no.-14...basalt samples in Egypt: Journal of Thermal...in hard rock: Renewable Energy, 28, no. 14...basalt samples in Egypt: Journal of Thermal...parameterization on surface energy fluxes and temperatures...

D. Ramakrishnan; Rishikesh Bharti; M. Nithya; K. N. Kusuma; K. D. Singh

318

Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns  

E-Print Network (OSTI)

Excavated Hard Rock Caverns. Pacific Northwest Laboratory,Lux, K.H. Design of salt caverns for the storage of naturalgas storage in unlined rock caverns. Int J Rock Mech Min Sc

Rutqvist, J.

2013-01-01T23:59:59.000Z

319

Generation of Gaussian Density Fields  

E-Print Network (OSTI)

This document describes analytical and numerical techniques for the generation of Gaussian density fields, which represent cosmological density perturbations. The mathematical techniques involved in the generation of density harmonics in k-space, the filtering of the density fields, and the normalization of the power spectrum to the measured temperature fluctuations of the Cosmic Microwave Background, are presented in details. These techniques are well-known amongst experts, but the current literature lacks a formal description. I hope that this technical report will prove useful to new researchers moving into this field, sparing them the task of reinventing the wheel.

Hugo Martel

2005-06-22T23:59:59.000Z

320

Density Functional Theory (DFT) Simulated Annealing (SA)  

E-Print Network (OSTI)

. . . . . . . . 9 2009 #12;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory) % Lattice-Boltzmann (LBM) #12;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory (DFT;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory (DFT) Simulated Annealing (SA) Monte Carlo &$ ' ' (GCMC

Note: This page contains sample records for the topic "tomography rock density" 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

Parametric Investigation of the Performance of Solar Heating Systems with Rock Bed Storage  

Science Journals Connector (OSTI)

The performance of solar air collector domestic heating systems with rock bed storage, as obtained from theoretical analysis, is...

W. L. Dutre; J. Vanheelen

1981-01-01T23:59:59.000Z

322

Esimation of field-scale thermal conductivities of unsaturated rocks from in-situ temperature data  

E-Print Network (OSTI)

Properties in Hard Rock, Ph.D. Thesis, Lulea Universityof Technology, Lulea, Sweden. Kolditz, O. and C. Clauser, (

Mukhopadhyay, Sumit; Tsang, Yvonne W.; Birkholzer, Jens T.

2008-01-01T23:59:59.000Z

323

Method of predicting the characteristics of a rock mass in hydrotechnical construction  

Science Journals Connector (OSTI)

1. The proposed method makes it possible to predict the characteristics of a rock mass when designing rockfill a...

O. A. Pakhomov

1987-10-01T23:59:59.000Z

324

We present two systems, reliable sockets (rocks) and reliable packets (racks), that provide transparent network connection  

E-Print Network (OSTI)

Abstract We present two systems, reliable sockets (rocks) and reliable packets (racks of the connection changes IP address, with correct recovery of in-flight data. To allow rocks and racks Protocol that enables the remote detection of rocks and racks, or any other socket enhancement system

Miller, Barton P.

325

Fluid substitution in carbonate rocks based on the Gassmann equation and Eshelby–Walsh theory  

Science Journals Connector (OSTI)

Abstract Fluid substitution in carbonate rocks is more difficult than it is in clastic rocks for two reasons. Firstly, the rock physics modeling uncertainties in carbonate rocks, this is due to the difficulty of accurately acquiring the moduli of carbonate rocks' solid matrix because the experimental data on carbonate rocks have not been as thoroughly studied as silici-clastic sedimentary rocks. Secondly, due to the complex pore systems of carbonate rocks, it is very difficult to model pore geometry of carbonates, and hence hard to assess how the elastic properties change as fluid saturation changes based on the traditional Biot and Gassmann theories. In order to solve these problems, we present a new fluid substitution equation of carbonate rocks using the Gassmann equation and Eshelby–Walsh theory (GEW) in this paper. Then, the specific procedures of how to calculate the moduli of carbonate rocks' solid matrix and how to measure the effect of pore geometry in fluid substitution based on the new fluid substation equation were illustrated by experimental testing about 12 carbonate rock samples in different fluid saturation scenarios and logging data. Finally, we further compared the new fluid substitution method with the conventional Gassmann fluid substitution based on the experimental data. The results verified that the new method is more accurate and reliable in the fluid substitution of complex carbonate rocks.

Quanxiong Feng; Lian Jiang; Mingquan Liu; Huan Wan; Li Chen; Wei Xiao

2014-01-01T23:59:59.000Z

326

RoBOT: "Rocks Beneath Our Toes" An experiential learning opportunity in mineralogy and geochemistry  

E-Print Network (OSTI)

RoBOT: "Rocks Beneath Our Toes" An experiential learning opportunity in mineralogy Foundation What is RoBOT? The "Rocks Beneath Our Toes" or RoBOT Program began in 2006 with funding from high school RoBOT participants on a weekend field trip to collect and document rock samples

Baxter, Ethan F.

327

Compressional and shear velocities of dry and saturated jointed rock: a laboratory study  

Science Journals Connector (OSTI)

......classification of rock mass qualities, Geophys...shallow jointed rock, Int. J...a jointed sandstone, in Mechanical...fracture permeability, Int. J...microcrack porosity. By modelling...and steam reservoirs require...hot-dry-rock method are...evaluating the quality of large...and fluid permeability. Seismic...aperture or porosity. Moos...velocity in a sandstone is independent......

R. M. Stesky

1985-10-01T23:59:59.000Z

328

The milky way tomography with sdss  

SciTech Connect

Using the photometric parallax method, we estimate the distances to {approx}48 million stars detected by the Sloan Digital Sky Survey (SDSS), and map their three-dimensional number density distribution in the Galaxy. The currently available data sample the distance range from 100 pc to 15 kpc and cover 6,500 deg{sup 2} of sky, mostly at high galactic latitudes (|b| > 25). These stellar number density maps allow an investigation of the Galactic structure without any a priori assumptions about its components. The data show strong evidence for a Galaxy consisting of an oblate halo, disk components, and a number of localized overdensities. The number density distribution of stars in the Solar neighborhood (D < 1.5kpc) favors a model having a ''thin'' and a ''thick'' exponential disk, with scale heights and lengths of H{sub 1} {approx} 280 pc and L{sub 1} {approx} 2400pc, and H{sub 2} {approx} 1200pc and L{sub 2} {approx} 3500pc, respectively, and local thick-to-thin disk normalization {rho}{sub thick} (R{sub {circle_dot}})/{rho}{sub thin}(R{sub {circle_dot}}) = 4%. Fits applied to the entire dataset are significantly more uncertain due to the presence of clumps and overdensities. The halo power law index is very poorly constrained, but we find an oblate halo with c/a {approx} 0.5 to be strongly preferred. While roughly consistent with this simple model, the measured density distribution shows a number of statistically significant deviations from the model predictions. In addition to known features, such as the Monoceros stream, a remarkable density enhancement covering over a thousand square degrees of sky is detected towards the constellation of Virgo, at distances of {approx} 5-15 kpc. Compared to counts in a region symmetric with respect to the l = 0 line and with the same Galactic latitude, it is responsible for a factor of 2 number density excess, and may be a nearby tidal stream or a low-surface brightness dwarf galaxy merging with the Milky Way. The u - g color distribution of these stars implies metallicities lower than those of the thick disk, and consistent with the halo metallicity distribution.

Juric, Mario; Ivezic, Zeljko; Brooks, Alyson; Lupton, Robert H.; Schlegel, David; Finkbeiner, Douglas; Padmanabhan, Nikhil; Bond, Nicholas; Rockosi, Constance M.; Knapp,; Gunn, James E.; Sumi, Takahiro; Schneider, Donald; Barentine, J.C.; Brewington, Howard J.; Brinkmann, J.; Fukugita, Masataka; Harvanek, Michael; Kleinman, S.J.; Krzesinski, Jurek; Long, Dan; /Princeton U. Observ. /Washington U., Seattle, Astron. Dept. /Princeton U. /Penn State U., Astron. Astrophys. /Apache Point Observ. /Tokyo U., ICRR

2005-10-01T23:59:59.000Z

329

Multi-Resolution Seismic Tomography Based on Recursive Tessellation Hierarchy  

SciTech Connect

A 3-D global tomographic model that reconstructs velocity structure at multiple scales and incorporates laterally variable seismic discontinuities is currently being developed. The model parameterization is node-based where nodes are placed along vertices defined by triangular tessellations of a spheroidal surface. The triangular tessellation framework is hierarchical. Starting with a tetrahexahedron representing the whole globe (1st level of the hierarchy, 24 faces), they divide each triangle of the tessellation into daughter triangles. The collection of all daughter triangles comprises the 2nd level of the tessellation hierarchy and further recursion produces an arbitrary number of tessellation levels and arbitrarily fine node-spacing. They have developed an inversion procedure that takes advantage of the recursive properties of the tessellation hierarchies by progressively solving for shorter wavelength heterogeneities. In this procedure, we first perform the tomographic inversion using a tessellation level with coarse node spacing. They find that a coarse node spacing of approximately 8{sup o} is adequate to capture bulk regional properties. They then conduct the tomographic inversion on a 4{sup o} tessellation level using the residuals and inversion results from the 8{sup o} run. In practice they find that the progressive tomography approach is robust, providing an intrinsic regularization for inversion stability and avoids the issue of predefining resolution levels. Further, determining average regional properties with coarser tessellation levels enables long-wavelength heterogeneities to account for sparsely sampled regions (or regions of the mantle where longer wavelength patterns of heterogeneity suffice) while allowing shorter length-scale heterogeneities to emerge where necessary. They demonstrate the inversion approach with a set of synthetic test cases that mimic the complex nature of data arrangements (mixed-determined inversion) common to most tomographic problems. They also apply the progressive inversion approach with Pn waves traveling within the Middle East region and compare the results to simple tomographic inversions. As expected from synthetic testing, the progressive approach results in detailed structure where there is high data density and broader regional anomalies where seismic information is sparse. The ultimate goal is to use these methods to produce a seamless, multi-resolution global tomographic model with local model resolution determined by the constraints afforded by available data. They envisage this new technique as the general approach to be employed for future multi-resolution model development with complex arrangements of regional and teleseismic information.

Simmons, N A; Myers, S C; Ramirez, A

2009-07-01T23:59:59.000Z

330

Microsoft Word - CX-Wautoma-Rock Creek_WEB.doc  

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

3, 2010 3, 2010 REPLY TO ATTN OF: KEP-4 SUBJECT: Environmental Clearance Memorandum Corinn Castro Project Manager - TELM-TPP-3 Proposed Action: Replace spacer dampers along the Wautoma-Rock Creek No. 1 500-kV Transmission Line. Budget Information: Work Order # 00234527 PP&A Project No.: PP&A 1507 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.3, Routine maintenance activities...for structures, rights-of-way, infrastructures such as roads, equipment...routine maintenance activities, corrective....are required to maintain... infrastructures...in a condition suitable for a facility to be used for its designed purpose. Location: Wautoma-Rock Creek No. 1 500-kV Transmission Line. The proposed project is

331

Picture Rocks, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Picture Rocks, Arizona: Energy Resources Picture Rocks, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.3459069°, -111.2462146° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.3459069,"lon":-111.2462146,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

332

MHK Projects/Race Rocks Demonstration | Open Energy Information  

Open Energy Info (EERE)

Race Rocks Demonstration Race Rocks Demonstration < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.2844,"lon":-123.531,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

333

Rock County, Minnesota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock County, Minnesota: Energy Resources Rock County, Minnesota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 43.6927003°, -96.3226072° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.6927003,"lon":-96.3226072,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

334

Microsoft Word - CX-Hat_Rock_Switch_14June2013  

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

7, 2013 7, 2013 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Glenn Russell Project Manager -TPCV-TPP-4 Proposed Action: Hat Rock Switching Station Replacement Project Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Umatilla County, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to fund PacifiCorp's rebuild of BPA's Hat Rock Tap Switching Station, which is located within PacifiCorp's McNary-Wallula 230-kilovolt (kV) transmission line right-of-way (ROW). Rebuilding the switching station would include the replacement of sectionalizing switches, the grounding grid, and all signage. The approximately 0.5-acre yard would

335

Round Rock, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Round Rock, Texas: Energy Resources Round Rock, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 30.5082551°, -97.678896° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":30.5082551,"lon":-97.678896,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

336

Rock River LLC Wind Farm | Open Energy Information  

Open Energy Info (EERE)

River LLC Wind Farm River LLC Wind Farm Jump to: navigation, search The Rock River LLC Wind Farm is in Carbon County, Wyoming. It consists of 50 turbines and has a total capacity of 50 MW. It is owned by Shell Wind Energy.[1] Based on assertions that the site is near Arlington, its approximate coordinates are 41.5946899°, -106.2083459°.[2] References ↑ http://www.wsgs.uwyo.edu/Topics/EnergyResources/wind.aspx ↑ http://www.thefreelibrary.com/Shell+WindEnergy+Acquires+Second+Wind+Farm+in+the+U.S.,+in+an...-a082345438 Retrieved from "http://en.openei.org/w/index.php?title=Rock_River_LLC_Wind_Farm&oldid=132230" Category: Wind Farms What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

337

Big Rock, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock, Illinois: Energy Resources Rock, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.7639181°, -88.5470219° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.7639181,"lon":-88.5470219,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

338

East Flat Rock, North Carolina: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Flat Rock, North Carolina: Energy Resources Flat Rock, North Carolina: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.2801166°, -82.4220631° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.2801166,"lon":-82.4220631,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

339

West Valley Demonstration Project 10282 Rock Springs Road  

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

West Valley Demonstration Project West Valley Demonstration Project 10282 Rock Springs Road West Valley, NY 141 71 -9799 Mr. Daniel W. Coyne President & General Manager CH2M HILL B&W West Valley, LLC West Valley Demonstration Project 10282 Rock Springs Road West Valley, NY 141 71 -9799 ATTENTION: J. D. Rendall, Regulatory Strategy, AC-EA SUBJECT: Environmental Checklist WVDP-20 12-0 1, " WVDP Reservoir Interconnecting Canal Maintenance Activities" REFERENCE: Letter WD:2012:0409 (357953), D. W. Coyne to R. W. Reffner, "CONTRACT NO. DE-EM000 1529, Section 5-3, Item 105, NEPA Documentation (Transmittal of Environmental Checklist WVDP-20 12-0 1, WVDP Reservoir Interconnecting Canal Maintenance Activities), Revision 1 ," dated July 24, 20 12 Dear Mr. Coyne:

340

A wellbore stability model for formations with anisotropic rock strengths  

Science Journals Connector (OSTI)

Shale formations, due to the presence of laminations and weak planes, exhibit directional strength characteristics. In most conventional wellbore stability analyses, rock formations are typically assumed to have isotropic strength. This may cause erroneous results in anisotropic formations such as shales which show strength variations with changing loading directions with respect to the plane of weakness. Therefore a more complex wellbore stability model is required. We have developed such a model in which the anisotropic rock strength characteristic is incorporated. Applying this model to two case studies shows that shear failures occur either along or across the bedding planes depending on the relative orientation between the wellbore trajectories and the bedding planes. Additionally, the extent of failure region around the wellbore and the safe mud weights are significantly affected by the wellbore orientation with respect to the directions of bedding plane and in-situ stress field.

Hikweon Lee; See Hong Ong; Mohammed Azeemuddin; Harvey Goodman

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

WIPP air-intake shaft disturbed-rock zone study  

SciTech Connect

The disturbed-rock zone surrounding the air-intake shaft at the Waste Isolation Pilot Plant (WIPP) site was investigated to determine the extent and the permeability of the disturbed-rock zone as a function of radial distance from the 6.1 m diameter shaft, at different elevations within the Salado. Gas- and brine-permeability tests were performed in the bedded halite of the Salado formation at two levels within the air-intake shaft. The gas- and brine-permeability test results demonstrated that the radial distance to an undisturbed formation permeability of 1 {times} 10{sup {minus}21} m{sup 2} was less than 3.0 m.

Dale, T. [INTERA Inc., Austin, TX (United States); Hurtado, L.D. [Sandia National Labs., Albuquerque, NM (United States). Repository Isolation Systems Dept.

1996-12-01T23:59:59.000Z

342

Thermal stress on bottom hole rock of gas drilling  

Science Journals Connector (OSTI)

Gas drilling has higher penetration than mud drilling. The greatest reason for this phenomenon with gas is that the gas is greatly cooled by expansion as it passes through the bit and thereby cools the bottom of the hole. The thermal stress at bottom-hole occurs during this process. The concept of thermal crushing of rocks is analysed in this study. The theoretical methods are developed to analyse thermal stresses and fragmentation induced by cooling of rock. Then, the numerical computation is conducted for the thermal stress equations with the numerical result simulated for the temperature field at the bottom hole to explain the reason of high drilling rates in gas drilling. Furthermore, an experiment was conducted to verify the theory. Therefore, the theories and simulated results in this paper have a guiding signification for best understand the technique and possibly to extend its economic advantage still further. [Received: September 23, 2011; Accepted: November 20, 2011

Shunji Yang; Gonghui Liu; Jun Li

2012-01-01T23:59:59.000Z

343

North Little Rock, Arkansas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Little Rock, Arkansas: Energy Resources Little Rock, Arkansas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.769536°, -92.2670941° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.769536,"lon":-92.2670941,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

344

City of North Little Rock, Arkansas (Utility Company) | Open Energy  

Open Energy Info (EERE)

North Little Rock North Little Rock Place Arkansas Utility Id 13718 Utility Location Yes Ownership M NERC Location SERC NERC SERC Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png HPS- 100 Watt Lighting HPS- 1000 Watt (Floodlights) Lighting HPS- 150 Watt Lighting HPS- 250 Watt Lighting HPS- 250 Watt (Floodlights) Lighting HPS- 400 Watt (Floodlights) Lighting LCTOU Industrial LGS Industrial LPS Industrial MH- 1000 Watt (Floodlights) Lighting

345

Window Rock, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock, Arizona: Energy Resources Rock, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.680573°, -109.0525929° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.680573,"lon":-109.0525929,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

346

Ocean Bluff-Brant Rock, Massachusetts: Energy Resources | Open Energy  

Open Energy Info (EERE)

Bluff-Brant Rock, Massachusetts: Energy Resources Bluff-Brant Rock, Massachusetts: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.1080418°, -70.6633175° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.1080418,"lon":-70.6633175,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

347

McKees Rocks, Pennsylvania: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

McKees Rocks, Pennsylvania: Energy Resources McKees Rocks, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.4656244°, -80.0656106° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.4656244,"lon":-80.0656106,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

348

Rough Rock, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock, Arizona: Energy Resources Rock, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 36.4072229°, -109.8728929° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.4072229,"lon":-109.8728929,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

349

DENSITY AND ECCENTRICITY OF KEPLER PLANETS  

SciTech Connect

We analyze the transit timing variations (TTV) obtained by the Kepler mission for 22 sub-Jovian planet pairs (19 published, 3 new) that lie close to mean motion resonances. We find that the TTV phases for most of these pairs lie close to zero, consistent with an eccentricity distribution that has a very low root-mean-squared value of e {approx} 0.01; but about a quarter of the pairs possess much higher eccentricities, up to e {approx} 0.1-0.4. For the low-eccentricity pairs, we are able to statistically remove the effect of eccentricity to obtain planet masses from TTV data. These masses, together with those measured by radial velocity, yield a best-fit mass-radius relation M {approx} 3 M{sub Circled-Plus }(R/R{sub Circled-Plus }). This corresponds to a constant surface escape velocity of {approx}20 km s{sup -1}. We separate the planets into two distinct groups: ''mid-sized'' (those greater than 3 R{sub Circled-Plus }) and 'compact' (those smaller). All mid-sized planets are found to be less dense than water and therefore must contain extensive H/He envelopes that are comparable in mass to that of their cores. We argue that these planets have been significantly sculpted by photoevaporation. Surprisingly, mid-sized planets, a minority among Kepler candidates, are discovered exclusively around stars more massive than 0.8 M{sub Sun }. The compact planets, on the other hand, are often denser than water. Combining our density measurements with those from radial velocity studies, we find that hotter compact planets tend to be denser, with the hottest ones reaching rock density. Moreover, hotter planets tend to be smaller in size. These results can be explained if the compact planets are made of rocky cores overlaid with a small amount of hydrogen, {<=}1% in mass, with water contributing little to their masses or sizes. Photoevaporation has exposed bare rocky cores in cases of the hottest planets. Our conclusion that these planets are likely not water worlds contrasts with some previous studies. While mid-sized planets most likely accreted their hydrogen envelope from the proto-planetary disks, compact planets could have obtained theirs via either accretion or outgassing. The presence of the two distinct classes suggests that 3 R{sub Circled-Plus} could be identified as the dividing line between 'hot Neptunes' and 'super-Earths'.

Wu Yanqin [Department of Astronomy and Astrophysics, University of Toronto, ON M5S 3H4 (Canada); Lithwick, Yoram [Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 (United States)

2013-07-20T23:59:59.000Z

350

Neutron Production from the Fracture of Piezoelectric Rocks  

E-Print Network (OSTI)

A theoretical explanation is provided for the experimental evidence that fracturing piezoelectric rocks produces neutrons. The elastic energy micro-crack production ultimately yields the macroscopic fracture. The mechanical energy is converted by the piezoelectric effect into electric field energy. The electric field energy decays via radio frequency (microwave) electric field oscillations. The radio frequency electric fields accelerate the condensed matter electrons which then collide with protons producing neutrons and neutrinos.

A. Widom; J. Swain; Y. N. Srivastava

2011-09-22T23:59:59.000Z

351

Comparison and analysis of reservoir rocks and related clays  

SciTech Connect

A series of instrumental and chemical analyses was made on sedimentary rocks to determine the surface chemical properties of sedimentry rocks and the physical characteristic of the pores. A scanning electron microscope (SEM) with energy dispersive X-ray analytic capability was used to study the morphology of the samples, surface mineral composition and type and location of clays, and to obtain a qualitative estimate of the pore sizes. A centrifuge was used to determine the pore size distributions which are correlated with SEM observations. An atomic absorption spectrophotometer equipped with an inductively coupled plasma for complete spectral analysis was used to obtain analyses of the rocks, clays, and effluents from ion exchange tests. Two of the results are as follows: (1) Sweetwater gas sands have a bimodal pore size distribution composed of pores with a mean diameter of 0.2 microns which is attributed to intergranular spaces and cracks in the expanded laborboratory sample but which will be close under the pressure of the overburden formations, and these Sweetwater sands have a distribution of pores at 2 microns which are solution vugs rather than intergranular porosity since the sand grains are completely packed together with the cementing material due to the high overburden pressures; and (2) Ion-exchange capacities of two rocks were 5.3 meq/kg and 18.0 meq/kg, and the surface areas were 0.9 m/sup 2//g and 2.30 m/sup 2//g, respectively, even though each had almost identical mineral composition, clay type and quantity, and permeability. 7 references, 12 figures, 3 tables.

Crocker, M.E.; Donaldson, E.C.; Marchin, L.M.

1983-10-01T23:59:59.000Z

352

Water-Rock interaction in the Long Valley Caldera (USA)  

Science Journals Connector (OSTI)

Water-rock interactions within the main thermal aquifer in the Long Valley Caldera are evaluated using water chemistry data from a new suite of samples. The results reflect the impact of increased geothermal production and major CO2 loss, which appears to drive calcite precipitation in the aquifer. The study provides qualitative information on the rates of mineral reactions and the response times of chemical geothermometers to declining temperatures.

W.C. Evans; S. Hurwitz; D. Bergfeld; J. Lewicki; M.A. Huebner; C.F. Williams; S.T. Brown

2013-01-01T23:59:59.000Z

353

Fluid-Rock Characterization and Interactions in NMR Well Logging  

SciTech Connect

The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

Hirasaki, George J.; Mohanty, Kishore K.

2003-02-10T23:59:59.000Z

354

Deformation of underground deep cavities in rock salts at their long-term operations  

SciTech Connect

The underground deep cavities are created in rock salts of various morphological types with the purpose of storage of petroleum, gas and nuclear wastes. It is well known that the rock salt has rheological properties, which can result in closure of caverns and loss of their stability. In the evaporitic rocks, especially those containing halite, time-dependent deformation is pronounced even at comparatively low stress levels. At high stress levels this creep becomes a dominant feature of the mechanical behavior of salt rocks. So the knowledge of creep behavior of rock salt is of paramount importance in underground storage application of gas, petroleum products and nuclear wastes.

Zhuravleva, T.; Shafarenko, E. [Podzemgasprom, STC, Moscow (Russian Federation)

1995-12-01T23:59:59.000Z

355

Rock Sampling At Socorro Mountain Area (Armstrong, Et Al., 1995) | Open  

Open Energy Info (EERE)

Armstrong, Et Al., 1995) Armstrong, Et Al., 1995) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Socorro Mountain Area (Armstrong, Et Al., 1995) Exploration Activity Details Location Socorro Mountain Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Corresponding Socorro caldera Carboniferous rocks were studied in the field in 1988-1992-Renault later completed geochemistry and silica-crystallite geothermometry, Armstrong petrographic analysis and cathodoluminescence, Oscarson SEM studies, and John Repetski (USGS, Reston, Virgina) conodont stratigraphy and color and textural alteration as guides to the carbonate rocks' thermal history. The carbonate-rock classification used in this

356

Stability of nanoclusters in 14YWT oxide dispersion strengthened steel under heavy ion-irradiation by atom probe tomography  

SciTech Connect

14YWT oxide dispersion strengthened (ODS) ferritic steel was irradiated with of 5 MeV Ni2+ ions, at 300 C, 450 C, and 600 C to a damage level of 100 dpa. The stability of Ti–Y–O nanoclusters was investigated by applying atom probe tomography (APT) in voltage mode, of the samples before and after irradiations. The average size and number density of the nanoclusters was determined using the maximum separation method. These techniques allowed for the imaging of nanoclusters to sizes well below the resolution limit of conventional transmission electron microscopy techniques. The most significant changes were observed for samples irradiated at 300 C where the size (average Guinier radius) and number density of nanoclusters were observed to decrease from 1.1 nm to 0.8 nm and 12 1023 to 3.6 1023, respectively. In this study, the nanoclusters are more stable at higher temperature.

Jianchao He; Farong Wan; Kumar Sridharan; Todd R. Allen; A. Certain; V. Shutthanandan; Y.Q. Wu

2014-12-01T23:59:59.000Z

357

Density and pair-density scaling for deriving the Euler equation in density-functional and pair-density-functional theory  

SciTech Connect

A link between density and pair density functional theories is presented. Density and pair density scaling are used to derive the Euler equation in both theories. Density scaling provides a constructive way of obtaining approximations for the Pauli potential. The Pauli potential (energy) of the density functional theory is expressed as the difference of the scaled and original exchange-correlation potentials (energies).

Nagy, A. [Department of Theoretical Physics, University of Debrecen, H-4010 Debrecen (Hungary)

2011-09-15T23:59:59.000Z

358

RockPort Capital Partners (California) | Open Energy Information  

Open Energy Info (EERE)

RockPort Capital Partners (California) RockPort Capital Partners (California) Name RockPort Capital Partners (California) Address 3000 Sand Hill Road, Building 2, Suite 110 Place Menlo Park, California Zip 94025 Region Bay Area Product Venture capital firm that partners with cleantech entrepreneurs around the world Phone number (650) 854-9300 Website http://www.rockportcap.com/ Coordinates 37.4244767°, -122.1942422° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.4244767,"lon":-122.1942422,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

359

RockPort Capital Partners (Massachusetts) | Open Energy Information  

Open Energy Info (EERE)

RockPort Capital Partners (Massachusetts) RockPort Capital Partners (Massachusetts) Name RockPort Capital Partners (Massachusetts) Address 160 Federal Street, 18th Floor Place Boston, Massachusetts Zip 02110 Region Greater Boston Area Product Venture capital firm that partners with cleantech entrepreneurs around the world Phone number (617) 912-1420 Website http://www.rockportcap.com/ Coordinates 42.3537726°, -71.0562094° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.3537726,"lon":-71.0562094,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

360

Diagenesis in halite-cemented source rocks, Middle Devonian, Saskatchewan  

SciTech Connect

Porosity in Dawson Bay carbonates is halite plugged and the formation is sandwiched between thick units of bedded halite. The presence of displacive halite crystals within fine-grained carbonates (implying sediment plasticity during halite emplacement) and uncompacted organic-rich, carbonate-poor stromatolites indicate halite cementation occurred at an early stage. Also, halite cementation must have been completed prior to porosity loss in overlying bedded halites. By comparison with Holocene/Pleistocene bedded halites, this cementation occurred with only tens of meters of overburden. Early complete halite cementation should have converted Dawson Bay carbonates into virtually a closed system and greatly curtailed or inhibited organic-matter maturation within them Organic-rich carbonates occur immediately below Dawson Bay evaporites as rocks containing an anomalously abundant benthos (stromatoporoids, brachiopods) or as a more restricted facies, lacking megafossils or containing gastropods. Some restricted carbonates contain more than 2% extractable organic carbon. The n-alkane, pentacyclic triterpane, nonrearranged sterane and disterane distributions suggest two distinct populations of samples are present. Biomarker distributions are difficult to interpret in terms of estimating organic maturity because of source rock environmental factors (hypersalinity), but appear to be inconsistent with the geological prognosis that these source rocks would have been isolated early in their diagenesis. The problem of how kerogens can be altered in an apparently closed system has yet to be resolved.

Kendall, A.C. (Univ. of East Anglia, Norwich (England)); Abbott, G.D.; D'Elia, V.A.A. (Univ. of Newcastle upon Tyne (England))

1990-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Black Rock Point Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Black Rock Point Geothermal Area Black Rock Point Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Black Rock Point Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.9553,"lon":-119.1141,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

362

Allan Cormack, Computerized Axial Tomography (CAT), and Magnetic Resonance  

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

Allan M. Cormack, Computerized Axial Tomography (CAT) Allan M. Cormack, Computerized Axial Tomography (CAT) and Magnetic Resonance Imaging (MRI) Resources with Additional Information magnetic resonance imaging system Computed axial tomography, commonly known as CAT scanning, was introduced in 1972. During a CAT scan, a large coil of x-ray tubes rotates around the patient's body, taking x-rays from all angles. A computer integrates all of these x-rays into a single, three-dimensional image on a television screen. The data can be saved on the computer. Allan M. Cormack, a high energy physicist at Tufts University, shared the 1979 Nobel Prize in Physiology and Medicine for his key work in developing the methods for CAT scanners. At the time of development, these methods were widely regarded as the most significant advance in medical radiography since the 1895 discovery of x-rays.

363

Dictionary-Learning-Based Reconstruction Method for Electron Tomography  

E-Print Network (OSTI)

Electron tomography usually suffers from so called missing wedge artifacts caused by limited tilt angle range. An equally sloped tomography (EST) acquisition scheme (which should be called the linogram sampling scheme) was recently applied to achieve 2.4-angstrom resolution. On the other hand, a compressive sensing-inspired reconstruction algorithm, known as adaptive dictionary based statistical iterative reconstruction (ADSIR), has been reported for x-ray computed tomography. In this paper, we evaluate the EST, ADSIR and an ordered-subset simultaneous algebraic reconstruction technique (OS-SART), and compare the ES and equally angled (EA) data acquisition modes. Our results show that OS-SART is comparable to EST, and the ADSIR outperforms EST and OS-SART. Furthermore, the equally sloped projection data acquisition mode has no advantage over the conventional equally angled mode in the context.

Liu, Baodong; Verbridge, Scott S; Sun, Lizhi; Wang, Ge

2013-01-01T23:59:59.000Z

364

Microwave-induced thermoacoustic tomography: applications and corrections for the effects of acoustic heterogeneities  

E-Print Network (OSTI)

This research is primarily focused on developing potential applications for microwaveinduced thermoacoustic tomography and correcting for image degradations caused by acoustic heterogeneities. Microwave-induced thermoacoustic tomography was first...

Jin, Xing

2009-05-15T23:59:59.000Z

365

E-Print Network 3.0 - agent-enhanced computed tomography Sample...  

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

computed tomography Page: << < 1 2 3 4 5 > >> 1 CAT scan and RadonX-ray transform Relations with the Fourier transform. Dual Radon Summary: problems X-ray tomography...

366

E-Print Network 3.0 - advanced computed tomography Sample Search...  

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

advanced computed tomography Page: << < 1 2 3 4 5 > >> 1 CAT scan and RadonX-ray transform Relations with the Fourier transform. Dual Radon Summary: problems X-ray tomography...

367

Comparing Time Domain Reflectometry and Electrical Resistivity Tomography Measurements for Estimating Soil Water Distribution  

E-Print Network (OSTI)

511 Comparing Time Domain Reflectometry and Electrical Resistivity Tomography Measurements compared with electrical resistivity tomography (ERT) measurements along the same cross's interior for the measurements. However, determining the soil water content from the resulting electrical

Sailhac, Pascal

368

Development of a rock mass characteristics model for TBM penetration rate prediction  

Science Journals Connector (OSTI)

The TBM tunneling process in hard rock is actually a rock or rock mass breakage process, which determines the efficiency of tunnel boring machine (TBM). On the basis of the rock breakage process, a rock mass conceptual model that identifies the effect of rock mass properties on TBM penetration rate is proposed. During the construction of T05 and T06 tunnels of DTSS project in Singapore, a comprehensive program was performed to obtain the relevant rock mass properties and TBM performance data. A database, including rock mass properties, TBM specifications and the corresponding TBM performance, was established. Combining the rock mass conceptual model for evaluating rock mass boreability with the established database, a statistical prediction model of TBM penetration rate is set up by performing a nonlinear regression analysis. The parametric studies of the new model showed that the rock uniaxial compressive strength and the volumetric joint count have predominantly effects on the penetration rate. These results showed good agreement with the numerical simulations. The model limitations were also discussed.

Q.M. Gong; J. Zhao

2009-01-01T23:59:59.000Z

369

DOE - Office of Legacy Management -- Slick Rock Mill Site - CO 08  

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

Slick Rock Mill Site - CO 08 Slick Rock Mill Site - CO 08 FUSRAP Considered Sites Site: Slick Rock Mill Site (CO.08) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: Also see Slick Rock, Colorado, Processing Site Documents Related to Slick Rock Mill Site 2012 Annual Site Inspection and Monitoring Report for Uranium Mill Tailings Radiation Control Act Title I Disposal Sites-Slick Rock, Colorado, Disposal Site. LMS/S09461. February 2013 Verification Monitoring Report for the Slick Rock, Colorado, Processing Sites, 2007 Update June 2008 Office of Legacy Management DOE M/1577 2008 - -L Work Performed Under DOE Contract No. for the U.S.

370

Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites Slick Rock, Colorado. Draft  

SciTech Connect

The Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA) authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the sites and on vicinity properties (VP) associated with the sites. The US Environmental Protection Agency (EPA) promulgated standards for the UMTRCA that contained measures to control the contaminated materials and to protect the groundwater from further degradation. Remedial actions at the Slick Rock sites must be performed in accordance with these standards and with the concurrence of the US Nuclear Regulatory Commission (NRC).

NONE

1993-06-01T23:59:59.000Z

371

Multiplexed absorption tomography with calibration-free wavelength modulation spectroscopy  

SciTech Connect

We propose a multiplexed absorption tomography technique, which uses calibration-free wavelength modulation spectroscopy with tunable semiconductor lasers for the simultaneous imaging of temperature and species concentration in harsh combustion environments. Compared with the commonly used direct absorption spectroscopy (DAS) counterpart, the present variant enjoys better signal-to-noise ratios and requires no baseline fitting, a particularly desirable feature for high-pressure applications, where adjacent absorption features overlap and interfere severely. We present proof-of-concept numerical demonstrations of the technique using realistic phantom models of harsh combustion environments and prove that the proposed techniques outperform currently available tomography techniques based on DAS.

Cai, Weiwei; Kaminski, Clemens F., E-mail: cfk23@cam.ac.uk [Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB2 3RA (United Kingdom)

2014-04-14T23:59:59.000Z

372

Inverse scattering for frequency-scanned full-field optical coherence tomography  

E-Print Network (OSTI)

Inverse scattering for frequency-scanned full-field optical coherence tomography Daniel L. Marks-field optical coherence tomography (OCT) is able to image an entire en face plane of scatterers simulta- neously: 100.3010, 110.4500. 1. INTRODUCTION The capabilities of optical coherence tomography1,2 (OCT

Bhargava, Rohit

373

LimitedAngle Computed Tomography for Sandwich Structures using Data Fusion  

E-Print Network (OSTI)

1 Limited­Angle Computed Tomography for Sandwich Structures using Data Fusion Jeffrey E. Boyd and limited­angle computed­tomography (CT) are ill­posed problems, but where conventional CT has a small null. #12; 2 1. INTRODUCTION This paper presents a novel method for limited­angle computed tomography (CT

Boyd, Jeffrey E.

374

Reduction of Metal Artifacts in Computed Tomographies for the Planning and Simulation of Radiation Therapy  

E-Print Network (OSTI)

tomographies (CT). Compared to simulated CT projection data, real measurements allowed less improvementsReduction of Metal Artifacts in Computed Tomographies for the Planning and Simulation of Radiation and numerical stability. 1. INTRODUCTION In radiation therapy, computed tomographies are used for patient

Zerfowski, Detlef

375

Stress and fault rock controls on fault zone hydrology, Coso...  

Open Energy Info (EERE)

regions of distinct fluid inclusion chemistry and temperature gradient. Distributed fracture networks play only a minor role in fluid flow despite locally high fracture density...

376

0022-3530/93 $3.00 Long-Term Evolution of Fluid-Rock Interactions in  

E-Print Network (OSTI)

in the evolving Sierra Nevada magmatic arc is preserved in metavolcanic rocks of the Ritter Range pendant oxygen isotopic values of the rocks of the lower section indicate that these rocks interacted extensively with coeval volcanic centers. Metavolcanic rocks of the upper section evidently interacted with meteoris

Barton, Mark D.

377

Dynamic Inversion for Hydrological Process Monitoring with Electrical Resistance Tomography Under Model Uncertainty  

SciTech Connect

We propose an approach for imaging the dynamics of complex hydrological processes. The evolution of electrically conductive fluids in porous media is imaged using time-lapse electrical resistance tomography. The related dynamic inversion problem is solved using Bayesian filtering techniques, that is, it is formulated as a sequential state estimation problem in which the target is an evolving posterior probability density of the system state. The dynamical inversion framework is based on the state space representation of the system, which involves the construction of a stochastic evolution model and an observation model. The observation model used in this paper consists of the complete electrode model for ERT, with Archie's law relating saturations to electrical conductivity. The evolution model is an approximate model for simulating flow through partially saturated porous media. Unavoidable modeling and approximation errors in both the observation and evolution models are considered by computing approximate statistics for these errors. These models are then included in the construction of the posterior probability density of the estimated system state. This approximation error method allows the use of approximate - and therefore computationally efficient - observation and evolution models in the Bayesian filtering. We consider a synthetic example and show that the incorporation of an explicit model for the model uncertainties in the state space representation can yield better estimates than a frame-by-frame imaging approach.

Lehikoinen, A.; Huttunen, J.M.J.; Finsterle, S.; Kowalsky, M.B.; Kaipio, J.P.

2009-08-01T23:59:59.000Z

378

Source rock screening studies of Ordovician Maquoketa shale in western Illinois  

SciTech Connect

Rock-Eval (pyrolysis) studies of Ordovician Maquoketa Shale samples (cuttings and cores) from the shallow subsurface (500-800 ft deep) in western Illinois indicate that facies within the Maquoketa have potential as hydrocarbon source rocks. Dark, presumably organic-rich zones within the Maquoketa Shale were selected and analyzed for total organic carbon (TOC), Rock-Eval (pyrolysis), and bulk and clay mineralogy using x-ray diffraction. Preliminary results from six samples from Schuyler, McDonough, and Fulton Counties show TOC values ranging from 4.70% to as high as 12.90%. Rock-Eval parameters, measured by heating organic matter in an inert atmosphere, indicate source rock maturity and petroleum-generative potential. Screening studies, using the Rock-Eval process, describe very good source rock potential in facies of the Maquoketa Shale. Further studies at the Illinois State Geological Survey will expand on these preliminary results. This study complements a proposed exploration model in western Illinois and further suggests the possibility of source rocks on the flanks of the Illinois basin. Long-distance migration from more deeply buried effective source rocks in southern Illinois has been the traditional mechanism proposed for petroleum in basin-flank reservoirs. Localized source rocks can be an alternative to long-distance migration, and can expand the possibilities of basin-flank reservoirs, encouraging further exploration in these areas.

Autrey, A.; Crockett, J.E.; Dickerson, D.R.; Oltz, D.F.; Seyler, B.J.; Warren, R.

1987-09-01T23:59:59.000Z

379

Magnetospheric Constellation and Tomography Mission Concept R. E. Ergun1*  

E-Print Network (OSTI)

Magnetospheric Constellation and Tomography Mission Concept R. E. Ergun1* , D. E. Larson1 , T. Phan]. The interaction between the solar wind and mag- netosphere results with energy and mass transfer across magnetic and stored in the magnetotail. A plasma sheet appears between the two lobes of the magnetotail where energy

California at Berkeley, University of

380

ADVANCES IN IMAGING AND ELECTRON PHYSICS, VOL. 128 Quantum Tomography  

E-Print Network (OSTI)

ADVANCES IN IMAGING AND ELECTRON PHYSICS, VOL. 128 Quantum Tomography G. MAURO D'ARIANO, MATTEO G .............. 277 205 Copyright 9 2003 Elsevier Inc. All r~crhte r~r~r~ #12;206 MAURO D'ARIANO ET AL. VII

D'Ariano, Giacomo Mauro

Note: This page contains sample records for the topic "tomography rock density" 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

Roadmap: Radiologic Imaging Sciences -Computed Tomography (with AAS Radiologic Technology) -  

E-Print Network (OSTI)

Roadmap: Radiologic Imaging Sciences - Computed Tomography (with AAS Radiologic Technology) - Bachelor of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-CTRT] Regional College Catalog Year: 2013-2014 Page 1 of 2 | Last Updated: 30-Apr-13/LNHD This roadmap is a recommended semester

Sheridan, Scott

382

Roadmap: Radiologic Imaging Sciences -Computed Tomography (with AAS Radiologic Technology) -  

E-Print Network (OSTI)

Roadmap: Radiologic Imaging Sciences - Computed Tomography (with AAS Radiologic Technology) - Bachelor of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-CTRT] Regional College Catalog Year: 2012-2013 Page 1 of 2 | Last Updated: 25-Oct-12/LNHD This roadmap is a recommended semester

Sheridan, Scott

383

Constraints on mantle convection from seismic tomography and flow modeling  

E-Print Network (OSTI)

In this thesis I combine high resolution seismic tomography and realistic flow modeling to constrain mantle convection. The bulk of the data used in the tomographic imaging are millions of P, pP and pwP travel time residuals, ...

Kárason, Hrafnkell, 1970-

2002-01-01T23:59:59.000Z

384

A SIGNAL SYNTHESIS PROCEDURE DESIGNED FOR DISCREET OCEAN ACOUSTIC TOMOGRAPHY  

E-Print Network (OSTI)

the detection probability of active emis- sions by a nearby unknown interceptor. Finally, this procedure is ap in ship noise with the constraint to have an accurate estimation of the channel parameters. Results tomography, parameter estimation, sig- nal detection, optimization, performance analysis 1. INTRODUCTION

Boyer, Edmond

385

A new concept of ocean acoustic tomography Lionel CROS(1)  

E-Print Network (OSTI)

a synthetic signal in ship noise with the con- straint to have an accurate estimation of the channel: discreet acoustic tomography, estimation, detection, optimization, performance analysis. R´ESUM´E COURT: La disc`ete, estimation, d´etection, optimisation, analyse de perfor- mance. 1 INTRODUCTION Ocean acoustic

Boyer, Edmond

386

Adaptive optics enhanced simultaneous en-face optical coherence tomography  

E-Print Network (OSTI)

Adaptive optics enhanced simultaneous en-face optical coherence tomography and scanning laser ophthalmoscopy David Merino and Chris Dainty Applied Optics Group, Department of Experimental Physics, National and Adrian Gh. Podoleanu Applied Optics Group, School of Physical Sciences, University of Kent at Canterbury

Dainty, Chris

387

Spherical radon transforms and mathematical problems of thermoacoustic tomography  

E-Print Network (OSTI)

The spherical Radon transform (SRT) integrates a function over the set of all spheres with a given set of centers. Such transforms play an important role in some newly developing types of tomography as well as in several areas of mathematics...

Ambartsoumian, Gaik

2009-06-02T23:59:59.000Z

388

3-D seismic tomography of the Adelaide fold belt  

Science Journals Connector (OSTI)

......the major factor. Temperature-induced P-wave...which smoothes the temperature contrast, resulting...structure of the eastern Snake River Plain and its...1996. Upper mantle temperatures from teleseismic tomography...implications for regolith development, 3rd Australian Regolith......

Peter Clifford; Stewart Greenhalgh; Greg Houseman; Frank Graeber

2008-01-01T23:59:59.000Z

389

3D Tomography from Few Projections in Experimental Fluid Dynamics  

E-Print Network (OSTI)

3D Tomography from Few Projections in Experimental Fluid Dynamics Stefania Petra, Andreas Schr projections due to both limited optical access to wind and water tunnels and cost S. Petra, C. Schn projection data. The latter are the pixel entries in the recorded 2D images that represent the integration

Schnörr, Christoph

390

Volumetric Reconstruction in the MicroCAT Tomography System  

E-Print Network (OSTI)

of projection data . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.2 Illustration of Feldkamp filteredVolumetric Reconstruction in the MicroCAT Tomography System A Thesis Presented for the Master essential data and an intimate knowledge of the MicroCAT system. Dr. Sam Jordan of the University

Cates, Josh

391

Bayesian Image Reconstruction for Transmission Tomography Using Deterministic Annealing  

E-Print Network (OSTI)

and non-medical applications, however, the measured projection data are photon limited and the imaging;1 INTRODUCTION Transmission tomography is perhaps most familiar in its medical guise as CT (computed tomogra- phy procedure. Because of the relatively high dose in conventional CT, the measured projection data contain

Rangarajan, Anand

392

Strength and static elastic moduli of Mesaverde rocks  

SciTech Connect

This report discusses the mechanical properties of Mesaverde rocks (shale and sandstone) from various depths in five wells in Colorado and Wyoming. The properties studied were tensile strength, compressive strength, hydrostatic compressibility, shear stress under strain-controlled compression, and static elastic moduli. With respect to these properties, the sandstones are virtually isotropic. The shales, on the other hand, are definitely anisotropic. The nature and degree of anisotropy of the shales vary with the depth of sample origin. The relative values of mechanical properties between the shale and the sandstone also vary with depth. 7 references, 17 figures, 8 tables.

Lin, W.

1985-03-01T23:59:59.000Z

393

Exergy analysis of a rock bed thermal storage system  

Science Journals Connector (OSTI)

In this paper, a thermodynamic procedure is presented to analyse energy and exergy balances of a rock bed thermal storage system. The thermal behaviour is described by means of a control volume that includes three subsystems: the solar collectors, the fluid distribution system and the storage chamber. Solar-to-thermal energy conversion was obtained by means of a solar collector at a fixed airflow rate. The final purpose of the method is to determine how well the thermodynamic modelling fits the real data obtained experimentally from the prototype under normal operating conditions.

J.J. Navarrete-Gonzalez; J.G. Cervantes-de Gortari; E. Torres-Reyes

2008-01-01T23:59:59.000Z

394

Energy Efficiency Upgrades for Little Rock Air Force Base  

SciTech Connect

Little Rock Air Force Base (LRAFB), in partnership with the local utility, Entergy Services, Inc., has reduced energy costs and used savings from investments in high-efficiency equipment to maintain and improve the condition of base housing and other facilities. Three projects were completed, with over $10 million invested. Major accomplishments include replacing air-to-air heat pumps with high-efficiency ground-source heat pumps (GSHPs) in more than 1,500 base housing units, lighting modifications to 10 buildings, upgrade of HVAC equipment in the base's enlisted club, and energy-efficient lighting retrofits for LRAFB's flight simulator.

Goldman, C.; Dunlap, M.A.

2000-11-13T23:59:59.000Z

395

Sulfur oxidation influence on rock phosphate solubilization in soil  

E-Print Network (OSTI)

The desirability of using rock phosphate (RP) as a phosphorus (P ) fertilizer in Brazil, as well in other parts of the world, has increased in recent years. This is due to increased prices of the energy required to transform ground RP into more soluble sources... of S on the solubilization of RP, 13X greater residual phosphorus availability when S was added to RP. Bromfield (1975) found that S mixed wi th togolese RP increased yield and that this mixture was as good as superphosphate for groundnuts. The use of elemental...

Correa de Souza, Osni

2012-06-07T23:59:59.000Z

396

Chapter 7 - Horizontally Integrated Remote Measurements of Ocean Currents Using Acoustic Tomography Techniques  

Science Journals Connector (OSTI)

Abstract This chapter begins with a discussion of the comparative difficulty of measuring horizontally integrated subsurface oceanic current and vorticity measurements. This is followed by a discussion of computer-assisted tomography techniques used in the medical, geophysical, and seismic branches of science and their adaptation and extension to acoustic tomography for subsurface oceanographic investigations. In particular, the following aspects pertaining to the application of acoustic methods for probing the oceans’ interior water temperature and current structure, as well as their adaptations for measuring horizontally averaged water currents from straits, coastal water bodies, estuaries, and rivers, are addressed: (1) one-way tomography, (2) two-way tomography (reciprocal tomography), (3) acoustic tomographic measurements from straits, (4) coastal acoustic tomography (CAT), (5) river acoustic tomography (RAT), (6) acoustic tomographic measurements of vorticity, and (7) horizontally integrated current measurements using space-time acoustic scintillation analysis technique.

Antony Joseph

2014-01-01T23:59:59.000Z

397

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma  

Open Energy Info (EERE)

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, USA Details Activities (0) Areas (0) Regions (0) Abstract: Quantitative X-ray diffraction analysis of about 80 rhyolite and associated lacustrine rocks has characterized previously unrecognized zeolitic alteration throughout the Valles caldera resurgent dome. The alteration assemblage consists primarily of smectite-clinoptilolite-mordenite-silica, which replaces groundmass and fills voids, especially in the tuffs and lacustrine rocks. Original rock textures are routinely preserved. Mineralization typically extends to

398

Method and apparatus for determining two-phase flow in rock fracture  

DOE Patents (OSTI)

An improved method and apparatus as disclosed for measuring the permeability of multiple phases through a rock fracture. The improvement in the method comprises delivering the respective phases through manifolds to uniformly deliver and collect the respective phases to and from opposite edges of the rock fracture in a distributed manner across the edge of the fracture. The improved apparatus comprises first and second manifolds comprising bores extending within porous blocks parallel to the rock fracture for distributing and collecting the wetting phase to and from surfaces of the porous blocks, which respectively face the opposite edges of the rock fracture. The improved apparatus further comprises other manifolds in the form of plenums located adjacent the respective porous blocks for uniform delivery of the non-wetting phase to parallel grooves disposed on the respective surfaces of the porous blocks facing the opposite edges of the rock fracture and generally perpendicular to the rock fracture.

Persoff, Peter (Oakland, CA); Pruess, Karsten (Berkeley, CA); Myer, Larry (Benicia, CA)

1994-01-01T23:59:59.000Z

399

DENSITY LIMITS IN TOROIDAL PLASMAS MARTIN GREENWALD  

E-Print Network (OSTI)

(RFP) ---- Spheromaks and FRCs · Physics basis for density limit ---- Neutrals ---- Radiation models as fast terminations · Spheromak and FRC don't have density limit data operation at "optimized" density

Greenwald, Martin

400

Uranium occurrence in igneous rocks of the central Davis Mountains, west Texas  

E-Print Network (OSTI)

is local? sv ized in fewer sites with higher concentrations than in fine-grained rocks. In glasses, uranium is homogeneously dis tributed. Crystalline rocks are uranium-depleted by as much as 30 percent in comparison to glasses of similar composition.... This suggests that uranium is lost during alteration because it is concentrated at grain boundaries in crystalline rocks, where it is accessible to altering solutions. Uranium depletion also occurs in air-fall tuffs because of their permeability. Alteration...

Schaftenaar, Wendy Elizabeth

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Black Rock I Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Rock I Geothermal Project Rock I Geothermal Project Project Location Information Coordinates The following coordinate was not recognized: 33°19'59" N, 115°50'3 W.The following coordinate was not recognized: 33°19'59" N, 115°50'3 W. Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.3705792,"lon":-115.77401,"alt":0,"address":"33\u00b019'59\" N, 115\u00b050'3 W","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

402

Black Rock II Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Black Rock II Geothermal Project Black Rock II Geothermal Project Project Location Information Coordinates The following coordinate was not recognized: 33°19'59" N, 115°50'3 W.The following coordinate was not recognized: 33°19'59" N, 115°50'3 W. Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.3705792,"lon":-115.77401,"alt":0,"address":"33\u00b019'59\" N, 115\u00b050'3 W","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

403

Micromachined low frequency rocking accelerometer with capacitive pickoff  

DOE Patents (OSTI)

A micro electro mechanical sensor that uses capacitive readout electronics. The sensor involves a micromachined low frequency rocking accelerometer with capacitive pickoff fabricated by deep reactive ion etching. The accelerometer includes a central silicon proof mass, is suspended by a thin polysilicon tether, and has a moving electrode (capacitor plate or interdigitated fingers) located at each end the proof mass. During movement (acceleration), the tethered mass moves relative to the surrounding packaging, for example, and this defection is measured capacitively by a plate capacitor or interdigitated finger capacitor, having the cooperating fixed electrode (capacitor plate or interdigitated fingers) positioned on the packaging, for example. The micromachined rocking accelerometer has a low frequency (<500 Hz), high sensitivity (.mu.G), with minimal power usage. The capacitors are connected to a power supply (battery) and to sensor interface electronics, which may include an analog to digital (A/D) converter, logic, RF communication link, antenna, etc. The sensor (accelerometer) may be, for example, packaged along with the interface electronics and a communication system in a 2".times.2".times.2" cube. The proof mass may be asymmetric or symmetric. Additional actuating capacitive plates may be used for feedback control which gives a greater dynamic range.

Lee, Abraham P. (Arlington, VA); Simon, Jonathon N. (San Leandro, CA); McConaghy, Charles F. (Livermore, CA)

2001-01-01T23:59:59.000Z

404

Fluid-Rock Characterization and Interactions in NMR Well Logging  

SciTech Connect

The objective of this report is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity. Oil based drilling fluids can have an adverse effect on NMR well logging if it alters the wettability of the formation. The effect of various surfactants on wettability and surface relaxivity are evaluated for silica sand. The relation between the relaxation time and diffusivity distinguishes the response of brine, oil, and gas in a NMR well log. A new NMR pulse sequence in the presence of a field gradient and a new inversion technique enables the T{sub 2} and diffusivity distributions to be displayed as a two-dimensional map. The objectives of pore morphology and rock characterization are to identify vug connectivity by using X-ray CT scan, and to improve NMR permeability correlation. Improved estimation of permeability from NMR response is possible by using estimated tortuosity as a parameter to interpolate between two existing permeability models.

George J. Hirasaki; Kishore K. Mohanty

2005-09-05T23:59:59.000Z

405

ChemCam rock laser for Mars Science Laboratory "Curiosity"  

ScienceCinema (OSTI)

Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. The Flight Model was shipped in August, 2010 for installation on the rover at JPL. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components were concurrently assembled at Los Alamos and in Toulouse, France. The Mars Science Laboratory is scheduled to launch in 2011. Animations courtesy of JPL/NASA.

Wiens, Roger

2014-08-12T23:59:59.000Z

406

Open problems in nuclear density functional theory  

E-Print Network (OSTI)

This note describes five subjects of some interest for the density functional theory in nuclear physics. These are, respectively, i) the need for concave functionals, ii) the nature of the Kohn-Sham potential for the radial density theory, iii) a proper implementation of a density functional for an "intrinsic" rotational density, iv) the possible existence of a potential driving the square root of the density, and v) the existence of many models where a density functional can be explicitly constructed.

B. G. Giraud

2009-11-30T23:59:59.000Z

407

Dose calculation errors due to inaccurate representation of heterogeneity correction obtained from computerized tomography  

SciTech Connect

Computerized tomography (CT) is used routinely in evaluating radiation therapy isodose plans. With the introduction of 3D algorithms such as the voxel raytrace, which determines inhomogeneity corrections from actual CT Hounsfield numbers, caution must be used when evaluating isodose calculations. Artifacts from contrast media and dental work, radiopaque markers placed by the treatment planner, and changing bowel and rectal air patterns all have the potential to introduce error into the calculation due to inaccurate assessment of high or low density. Radiopaque makers such as x-spot BB's or solder wire are placed externally on the patient. Barium contrast media introduced at the time of simulation may be necessary to visualize specific anatomical structures on the CT images. While these localization and visualization tools may be necessary, it is important to understand the effects they may introduce in the planning process. Other problems encountered are patient specific and out of the control of the treatment planner. These include high- and low-density streaking caused by dental work, which produce computational errors due to overestimation, and small bowel and rectal air, the patterns of which change on a daily basis and may result in underestimation of structure density. It is important for each treatment planner to have an understanding of how this potentially tainted CT information may be applied in dose calculations and the possible effects they may have. At our institution, the voxel raytrace calculation is automatically forced any time couch angle is introduced. Errors in the calculation from the above mentioned situations may be introduced if a heterogeneity correction is applied. Examples of potential calculation errors and the magnitude of each will be discussed. The methods used to minimize these errors and the possible solutions will also be evaluated.

Williams, Greg; Tobler, Matthew; Gaffney, David; Moeller, John; Leavitt, Dennis

2002-12-31T23:59:59.000Z

408

Magnetic Anisotropy as an Aid to Identifying CRM and DRM in Red Sedimentary Rocks  

Science Journals Connector (OSTI)

To further evaluate the potential of magnetic anisotropy techniques for determining the origin of the natural remanent magnetization (NRM) in sedimentary rocks, several new remanence anisotropy measurement tec...

K.P. Kodama; M.J. Dekkers

2004-10-01T23:59:59.000Z

409

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor...  

Open Energy Info (EERE)

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Hydrothermal System At The Geysers, Sonoma County, California Jump to: navigation, search GEOTHERMAL...

410

E-Print Network 3.0 - archaean sedimentary rocks Sample Search...  

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

the Archaean," the rocks are ... Source: Hamilton, Warren B. - Department of Geophysics, Colorado School of Mines Collection: Geosciences 87 Geologic Time Name...

411

E-Print Network 3.0 - assisted three-dimensional rock Sample...  

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

are economically extractable tend to be concentrated in places where hot or even molten rock (magma) ... Source: Stanford University - Department of Energy Resources Engineering,...

412

Rock, Mineral, Coal, Oil, and Gas Resources on State Lands (Montana)  

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

This chapter authorizes and regulates prospecting permits and mining leases for the exploration and development of rock, mineral, oil, coal, and gas resources on state lands.

413

A Coupled Model for Natural Convection and Condensation in Heated Subsurface Enclosures Embedded in Fractured Rock  

E-Print Network (OSTI)

and Mass Transfer in Yucca Mountain Drifts,” Proceedings ofMD- 000001 REV 00, Yucca Mountain Project Report, Bechtelthe fractured rock at Yucca Mountain have been investigated

Halecky, N.; Birkholzer, J.T.; Webb, S.W.; Peterson, P.F.; Bodvarsson, G.S.

2006-01-01T23:59:59.000Z

414

E-Print Network 3.0 - altered granitic rock Sample Search Results  

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

whereas Turgutlu rocks can be considered ... Source: UCLA, Ion Microprobe Facility Collection: Geosciences Page: << < 1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 41...

415

Experiment-Based Model for the Chemical Interactions between Geothermal Rocks, Supercritical Carbon Dioxide and Water  

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

Experiment-Based Model for the Chemical Interactions between Geothermal Rocks, Supercritical Carbon Dioxide and Water presentation at the April 2013 peer review meeting held in Denver, Colorado.

416

EA-1987: Parker-Headgate Rock and Parker-Bouse Rebuild Project...  

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

the existing Parker Dam-Headgate Rock and Parker Dam-Bouse 161-kilovolt transmission lines along the Colorado River in western Arizona and eastern California. The project...

417

DESCRIPTION OF THE BAKKEN FORMATION’S ROCK PROPERTIES OF THE WILLISTON BASIN, NORTH DAKOTA.  

E-Print Network (OSTI)

??It is possible to determine rock properties by utilizing seismic inversion techniques. The inversion technique is the most frequently used, by which the seismic interpreters… (more)

Kocoglu, Sebnem 1983-

2013-01-01T23:59:59.000Z

418

ROCK THIN SECTIONING AND CUTTING PROTOCOLS FOR 3RD MAPPING PROJECTS (2012)  

E-Print Network (OSTI)

difficult lithologies (e.g. evaporates, clays, or unconsolidated sediments), as consolidated rocks are significantly easier to prepare. Unconsolidated samples may require resin impregnation, and are liable

Henderson, Gideon

419

E-Print Network 3.0 - acid rock discharges Sample Search Results  

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

dioxide from acidic brine. For a brine-rock ... Source: Heller, Paul - Department of Geology and Geophysics, University of Wyoming Collection: Geosciences 55 Chapter 1....

420

Bibliography of the geological and geophysical aspects of hot dry rock geothermal resources  

SciTech Connect

This is the first issue of an annual compilation of references that are useful to the exploration, understanding and development of the hot dry rock geothermal resource.

Heiken, G.; Sayer, S.

1980-02-01T23:59:59.000Z

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


421

Site Release Reports for C-Well Pipeline, UE-25 Large Rocks Test Site, and 29 GSF Test Pits  

SciTech Connect

The U.S. Department of Energy has implemented a program to reclaim lands disturbed by site characterization at Yucca Mountain. Long term goals of the program are to re-establish processes on disturbed sites that will lead to self-sustaining plant communities. The Biological Opinion for Yucca Mountain Site Characterization Studies required that the U.S. Department of Energy develop a Reclamation Standards and Monitoring Plan to evaluate the success of reclamation efforts. According to the Reclamation Standards and Monitoring Plan, reclaimed sites will be monitored periodically, remediated if necessary, and eventually compared to an appropriate reference area to determine whether reclamation goals have been achieved and the site can be released from further monitoring. Plant cover, density, and species richness (success parameters) on reclaimed sites are compared to 60 percent of the values (success criteria) for the same parameters on the reference area. Small sites (less than 0.1 ha) are evaluated for release using qualitative methods while large sites (greater than 0.1 ha) are evaluated using quantitative methods. In the summer of 2000, 31 small sites reclaimed in 1993 and 1994 were evaluated for reclamation success and potential release from further monitoring. Plant density, cover, and species richness were estimated on the C-Well Pipeline, UE-25 Large Rocks test site, and 29 ground surface facility test pits. Evidence of erosion, reproduction and natural recruitment, exotic species abundance, and animal use (key attributes) also were recorded for each site and used in success evaluations. The C-Well Pipeline and ground surface facility test pits were located in a ''Larrea tridentata - Ephedra nevadensis'' vegetation association while the UE-25 Large Rocks test site was located in an area dominated by ''Coleogyne ramosissima and Ephedra nevadensis''. Reference areas in the same vegetation associations with similar slope and aspect were chosen for comparison to the reclaimed sites. Sixty percent of the reference area means for density, cover, and species richness were compared to the estimated means for the reclaimed sites. Plant density, cover, and species richness at the C-Well Pipeline and UE-25 Large Rocks test site were greater than the success criteria and all key attributes indicated the sites were in acceptable condition. Therefore, these two sites were recommended for release from further monitoring. Of the 29 ground surface facility test pits, 26 met the criterion for density, 21 for cover, and 23 for species richness. When key attributes and conditions of the plant community near each pit were taken into account, 27 of these pits were recommended for release. Success parameters and key attributes at ground surface facility test pits 19 and 20 were inadequate for site release. Transplants of native species were added to these two sites in 2001 to improve density, cover, and species richness.

K.E. Rasmuson

2002-04-02T23:59:59.000Z

422

Nuclear energy density optimization: Shell structure  

Science Journals Connector (OSTI)

Background: Nuclear density functional theory is the only microscopical theory that can be applied throughout the entire nuclear landscape. Its key ingredient is the energy density functional.

M. Kortelainen; J. McDonnell; W. Nazarewicz; E. Olsen; P.-G. Reinhard; J. Sarich; N. Schunck; S. M. Wild; D. Davesne; J. Erler; A. Pastore

2014-05-15T23:59:59.000Z

423

Transformations for densities Linear transformations  

E-Print Network (OSTI)

' & $ % Lecture 28 Transformations for densities Linear transformations 1-1 differentiable functions General transformations Expectation of a function 1 #12;' & $ % Transformations for discrete transformation of a U[0, 1] · Take X U[0, 1], so that fX(x) = 1 0 0 and set Y

Adler, Robert J.

424

Paradox of Peroxy Defects and Positive Holes in Rocks Part II: Outflow of Electric Currents from Stressed Rocks  

E-Print Network (OSTI)

Understanding the electrical properties of rocks is of fundamental interest. We report on currents generated when stresses are applied. Loading the center of gabbro tiles, 30x30x0.9 cm$^3$, across a 5 cm diameter piston, leads to positive currents flowing from the center to the unstressed edges. Changing the constant rate of loading over 5 orders of magnitude from 0.2 kPa/s to 20 MPa/s produces positive currents, which start to flow already at low stress levels, <5 MPa. The currents increase as long as stresses increase. At constant load they flow for hours, days, even weeks and months, slowly decreasing with time. When stresses are removed, they rapidly disappear but can be made to reappear upon reloading. These currents are consistent with the stress-activation of peroxy defects, such as O$_3$Si-OO-SiO$_3$, in the matrix of rock-forming minerals. The peroxy break-up leads to positive holes h$^{\\bullet}$, i.e. electronic states associated with O$^-$ in a matrix of O$^{2-}$, plus electrons, e'. Propagating...

Scoville, John; Freund, Friedemann

2015-01-01T23:59:59.000Z

425

Resistivity Tomography At Silver Peak Area (DOE GTP) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Resistivity Tomography At Silver Peak Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Silver Peak Area (DOE GTP) Exploration Activity Details Location Silver Peak Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Resistivity_Tomography_At_Silver_Peak_Area_(DOE_GTP)&oldid=689883" Categories:

426

Using electrical impedance tomography to map subsurface hydraulic conductivity  

DOE Patents (OSTI)

The use of Electrical Impedance Tomography (EIT) to map subsurface hydraulic conductivity. EIT can be used to map hydraulic conductivity in the subsurface where measurements of both amplitude and phase are made. Hydraulic conductivity depends on at least two parameters: porosity and a length scale parameter. Electrical Resistance Tomography (ERT) measures and maps electrical conductivity (which can be related to porosity) in three dimensions. By introducing phase measurements along with amplitude, the desired additional measurement of a pertinent length scale can be achieved. Hydraulic conductivity controls the ability to flush unwanted fluid contaminants from the surface. Thus inexpensive maps of hydraulic conductivity would improve planning strategies for subsequent remediation efforts. Fluid permeability is also of importance for oil field exploitation and thus detailed knowledge of fluid permeability distribution in three-dimension (3-D) would be a great boon to petroleum reservoir analysts.

Berryman, James G. (Danville, CA); Daily, William D. (Livermore, CA); Ramirez, Abelardo L. (Pleasanton, CA); Roberts, Jeffery J. (Livermore, CA)

2000-01-01T23:59:59.000Z

427

Low-cost diffuse optical tomography for the classroom  

Science Journals Connector (OSTI)

Diffuse optical tomography (DOT) is an emerging imaging modality with potential applications in oncology neurology and other clinical areas. It allows the non-invasive probing of the tissue function using relatively inexpensive and safe instrumentation. An educational laboratory setup of a DOT system could be used to demonstrate how photons propagate through tissues basics of medical tomography and the concepts of multiple scattering and absorption. Here we report a DOT setup that could be introduced to the advanced undergraduate or early graduate curriculum using inexpensive and readily available tools. The basis of the system is the LEGO Mindstorms NXT platform which controls the light sources the detectors (photo-diodes) a mechanical 2D scanning platform and the data acquisition. A basic tomographic reconstruction is implemented in standard numerical software and 3D images are reconstructed. The concept was tested and developed in an educational environment that involved a high-school student and a group of post-doctoral fellows.

Taisuke Minagawa; Peyman Zirak; Udo M. Weigel; Anna K. Kristoffersen; Nicolas Mateos; Alejandra Valencia; Turgut Durduran

2012-01-01T23:59:59.000Z

428

Quantum tomography meets dynamical systems and bifurcations theory  

SciTech Connect

A powerful tool for studying geometrical problems in Hilbert spaces is developed. We demonstrate the convergence and robustness of our method in every dimension by considering dynamical systems theory. This method provides numerical solutions to hard problems involving many coupled nonlinear equations in low and high dimensions (e.g., quantum tomography problem, existence and classification of Pauli partners, mutually unbiased bases, complex Hadamard matrices, equiangular tight frames, etc.). Additionally, this tool can be used to find analytical solutions and also to implicitly prove the existence of solutions. Here, we develop the theory for the quantum pure state tomography problem in finite dimensions but this approach is straightforwardly extended to the rest of the problems. We prove that solutions are always attractive fixed points of a nonlinear operator explicitly given. As an application, we show that the statistics collected from three random orthonormal bases is enough to reconstruct pure states from experimental (noisy) data in every dimension d ? 32.

Goyeneche, D., E-mail: dardo.goyeneche@cefop.udec.cl [Departamento de Fisíca, Universidad de Concepción, Casilla 160-C, Concepción, Chile and Center for Optics and Photonics, Universidad de Concepción, Casilla 4012, Concepción (Chile); Torre, A. C. de la [Departamento de Física, Universidad Nacional de Mar del Plata, IFIMAR-CONICET, Dean Funes 3350, 7600 Mar del Plata (Argentina)

2014-06-15T23:59:59.000Z

429

Magnetic susceptibility of volcanic rocks in geothermal areas: application potential in geothermal exploration studies for identification of rocks and zones of hydrothermal alteration  

Science Journals Connector (OSTI)

Magnetic susceptibility and petrographic studies of drilled rock cuttings from two geothermal wells (Az-26 and Az-49) of the important electricity-generating geothermal system, Los Azufres, Mexico, were carried o...

Kailasa Pandarinath; Rajasekhariah Shankar…

2014-07-01T23:59:59.000Z

430

Coral Extension Rate Analysis Using Computed Axial Tomography  

E-Print Network (OSTI)

CORAL EXTENSION RATE ANALYSIS USING COMPUTED AXIAL TOMOGRAPHY A Thesis by ELEANOR ANN YUDELMAN Submitted to the Office of Graduate and Professional Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE Chair of Committee, Niall Slowey Committee Members, Deborah Thomas Benjamin Giese George P. Schmahl Head of Department, Deborah Thomas May 2014 Major Subject: Oceanography Copyright 2014 Eleanor Ann Yudelman ii ABSTRACT...

Yudelman, Eleanor Ann

2014-01-10T23:59:59.000Z

431

Energy density of variational states  

Science Journals Connector (OSTI)

We show, in several important and general cases, that a low variational energy density of a trial state is possible even when the trial state represents a different phase from the ground state. Specifically, we ask whether the ground-state energy density of a Hamiltonian whose ground state is in phase A can be approximated to arbitrary accuracy by a wave function, which represents a different phase B. We show this is indeed the case when A has discrete symmetry breaking order in one dimension or topological order in two dimensions, while B is disordered. We argue that, if reasonable conditions of physicality are imposed upon the trial wave function, then this is not possible when A has discrete symmetry breaking in dimensions greater than one and B is symmetric. Some other situations are also discussed.

Leon Balents

2014-12-08T23:59:59.000Z

432

Jacek Dobaczewski Density functional theory and energy  

E-Print Network (OSTI)

Jacek Dobaczewski Density functional theory and energy density functionals in nuclear physics Jacek Functional #12;Jacek Dobaczewski Mean-Field Theory Density Functional Theory · mean-field one? Density Functional Theory: A variational method that uses observables as variational parameters. #12;Jacek

Dobaczewski, Jacek

433

City of Rock Falls, Illinois (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Illinois (Utility Company) Illinois (Utility Company) Jump to: navigation, search Name City of Rock Falls Place Illinois Utility Id 16198 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Economic Development Rate Rider Irrigation System: Off-Peak Rider Commercial Rate C (Commercial) Commercial Rate GS: municipal and governmental entities Commercial Rate GS: other than municipal or governmental entities Commercial Rate R (Residential) Residential

434

Hydrologic test system for fracture flow studies in crystalline rock  

SciTech Connect

A hydrologic test system has been designed to measure the intrinsic permeabilities of individual fractures in crystalline rock. This system is used to conduct constant pressure-declining flow rate and pressure pulse hydraulic tests. The system is composed of four distinct units: (1) the Packer System, (2) Injection system, (3) Collection System, and (4) Electronic Data Acquisition System. The apparatus is built in modules so it can be easily transported and re-assembled. It is also designed to operate over a wide range of pressures (0 to 300 psig) and flow rates (0.2 to 1.0 gal/min). This system has proved extremely effective and versatile in its use at the Climax Facility, Nevada Test Site.

Raber, E; Lord, D.; Burklund, P.

1982-05-05T23:59:59.000Z

435

Saturated Zone Plumes in Volcanic Rock: Implications for Yucca Mountain  

SciTech Connect

This paper presents a literature survey of the occurrences of radionuclide plumes in saturated, fractured rocks. Three sites, Idaho National laboratory, Hanford, and Oak Ridge are discussed in detail. Results of a modeling study are also presented showing that the length to width ratio of a plume starting within the repository footprint at the Yucca Mountain Project site, decreases from about 20:1 for the base case to about 4:1 for a higher value of transverse dispersivity, indicating enhanced lateral spreading of the plume. Due to the definition of regulatory requirements, this lateral spreading does not directly impact breakthrough curves at the 18 km compliance boundary, however it increases the potential that a plume will encounter reducing conditions, thus significantly retarding the transport of sorbing radionuclides.

S. Kelkar; R. Roback; B. Robinson; G. Srinivasan; C. Jones; P. Reimus

2006-02-14T23:59:59.000Z

436

Predicting the transport properties of sedimentary rocks from microgeometry  

SciTech Connect

We investigate through analysis and experiment how pore geometry, topology, and the physics and chemistry of mineral-fluid and fluid-fluid interactions affect the flow of fluids through consolidated/partially consolidated porous media. Our approach is to measure fluid permeability and electrical conductivity of rock samples using single and multiple fluid phases that can be frozen in place (wetting and nonwetting) over a range of pore pressures. These experiments are analyzed in terms of the microphysics and microchemistry of the processes involved to provide a theoretical basis for the macroscopic constitutive relationships between fluid-flow and geophysical properties that we develop. The purpose of these experiments and their analyses is to advance the understanding of the mechanisms and factors that control fluid transport in porous media. This understanding is important in characterizing porous media properties and heterogeneities before simulating and monitoring the progress of complex flow processes at the field scale in permeable media.

Schlueter, E.M.

1993-01-01T23:59:59.000Z

437

Predicting the transport properties of sedimentary rocks from microgeometry  

SciTech Connect

The author investigates through analysis and experiment how pore geometry, topology, and the physics and chemistry of mineral-fluid and fluid-fluid interactions affect the flow of fluids through consolidated/partially consolidated porous media. The approach is to measure fluid permeability and electrical conductivity of rock samples using single and multiple fluid phases that can be frozen in place (wetting and nonwetting) over a range of pore pressures. These experiments are analyzed in terms of the microphysics and microchemistry of the processes involved to provide a theoretical basis for the macroscopic constitutive relationships between fluid-flow and geophysical properties that the authors develop. The purpose of these experiments and their analyses is to advance the understanding of the mechanisms and factors that control fluid transport in porous media. This understanding is important in characterizing porous media properties and heterogeneities before simulating and monitoring the progress of complex flow processes at the field scale in permeable media.

Schlueter, E.M.

1995-02-01T23:59:59.000Z

438

Sedimentary basin geochemistry and fluid/rock interactions workshop  

SciTech Connect

Fundamental research related to organic geochemistry, fluid-rock interactions, and the processes by which fluids migrate through basins has long been a part of the U.S. Department of Energy Geosciences program. Objectives of this program were to emphasize those principles and processes which would be applicable to a wide range of problems associated with petroleum discovery, occurrence and extraction, waste disposal of all kinds, and environmental management. To gain a better understanding of the progress being made in understanding basinal fluids, their geochemistry and movement, and related research, and to enhance communication and interaction between principal investigators and DOE and other Federal program managers interested in this topic, this workshop was organized by the School of Geology and Geophysics and held in Norman, Oklahoma in November, 1991.

NONE

1991-12-31T23:59:59.000Z

439

Recent developments in guided wave travel time tomography  

SciTech Connect

The concept of predictive maintenance using permanent sensors that monitor the integrity of an installation is an interesting addition to the current method of periodic inspections. Guided wave tomography had been developed to create a map of the wall thickness using the travel times of guided waves. It can be used for both monitoring and for inspection of pipe-segments that are difficult to access, for instance at the location of pipe-supports. An important outcome of the tomography is the minimum remaining wall thickness, as this is critical in the scheduling of a replacement of the pipe-segment. In order to improve the sizing accuracy we have improved the tomography scheme. A number of major improvements have been realized allowing to extend the application envelope to pipes with a larger wall thickness and to larger distances between the transducer rings. Simulation results indicate that the sizing accuracy has improved and that is now possible to have a spacing of 8 meter between the source-ring and the receiver-ring. Additionally a reduction of the number of sensors required might be possible as well.

Zon, Tim van; Volker, Arno [TNO, Stieltjesweg 1, P.O. box 155 2600 AD Delft (Netherlands)

2014-02-18T23:59:59.000Z

440

Real Time Tomography at the Swiss Light Source  

SciTech Connect

The penetrating power of X-rays coupled with the high flux of 3rd generation synchrotron sources makes X-ray tomography to excel among fast imaging methods . To exploit this asset of synchrotron sources is the motivation for setting up an ultra-fast tomography endstation at the TOMCAT beamline. The state of the art instruments at synchrotron sources offer routinely a temporal resolution of tens of seconds in tomography. For a number of applications, for example biomedical studies, the relevant time scales (breathing, heartbeat) are rather in the range of 0.5-2 seconds. To overcome motion artifacts when imaging such systems a new ultra-fast tomographic data acquisition scheme is being developed at the TOMCAT beamline. We can acquire a full set of projections at sub-second timescale in monochromatic or white-beam configuration. We present a feasibility study with the ultimate aim to achieve sub-second temporal resolution in 3D without significant deterioration of the spatial resolution. For the first time, the 3D dynamics of the very early stages of a quickly aging liquid foam can be visualised with high quality and sufficiently large field of view.

Mokso, R.; Marone, F. [Swiss Light Source, Paul Scherrer Institut, 5232 Villigen (Switzerland); Stampanoni, M. [Swiss Light Source, Paul Scherrer Institut, 5232 Villigen (Switzerland); Institute for Biomedical Engineering, University and ETH Zurich, Zurich (Switzerland)

2010-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "tomography rock density" 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

Parton Densities at the LHC  

E-Print Network (OSTI)

This contribution to the Italian "Workshop sui Monte Carlo, la Fisica e le Simulazioni a LHC", held at LNF, Frascati, in February, May and October 2006, summarises the status of parton density functions (PDF's) and the impact of their uncertainties on the LHC physics. Emphasis is given to methods of contraining PDF's using LHC data. Moreover, the advantages of the so-called PDF reweighting technique, which enables to quickly estimate PDF uncertainties with Monte Carlo events, are also presented.

A. Tricoli; for the ATLAS Collaboration

2008-08-19T23:59:59.000Z

442

/sup 10/Be profiles in lunar surface rock 68815  

SciTech Connect

Cosmic ray produced /sup 10/Be (t/sub 1/2/ = 1.6 x 10/sup 6/ years) activities have been measured in fourteen carefully ground samples of lunar surface rock 68815. The /sup 10/Be profiles from 0 to 4 mm are nearly flat for all three surface angles measured and show a very slight increase with depth from the surface to a depth of 1.5 cm. These depth profiles are in contrast to the SCR (solar cosmic ray) produced /sup 26/Al and /sup 53/Mn profiles measured from these same samples. There is no sign of SCR produced /sup 10/Be in this rock. The discrepancy between the data and the Reedy-Arnold theoretical calculation (about 2 dpm /sup 10/Be/kg at the surface) can be explained in two ways: (1) the low energy proton induced cross sections for /sup 10/Be production from oxygen are really lower than those used in the calculations or, (2) compared to the reported fits for /sup 26/Al and /sup 53/Mn, the solar proton spectral shape is actually softer (exponential rigidity parameter Ro less than 100 MV), the omnidirectional flux above 10 MeV is higher (more than 70 protons/cm/sup 2/ s), and the erosion rate is higher (greater than 1.3 mm/My). /sup 10/Be, as a high energy product, is a very useful nuclide for helping to obtain the SCR spectral shape in the past. 23 refs., 3 figs., 1 tab.

Nishiizumi, K.; Imamura, M.; Kohl, C.P.; Nagai, H.; Kobayashi, K.; Yoshida, K.; Yamashita, H.; Reedy, R.C.; Honda, M.; Arnold, J.R.

1987-01-01T23:59:59.000Z

443

The UK geothermal hot dry rock R&D programme  

SciTech Connect

The UK hot dry rock research and development programme is funded by the Department of Energy and aims to demonstrate the feasibility of commercial exploitation of HDR in the UK. The philosophy of the UK programme has been to proceed to a full-scale prototype HDR power station via a number of stages: Phase 1--Experiments at shallow depth (300 m) to assess the feasibility of enhancing the permeability of the rock. Phase 2--Studies at intermediate depth (2500 m) to determine the feasibility of creating a viable HDR subsurface heat exchanger. Phase 3--Establishment of an HDR prototype at commercial depth. The programme has run over a 15 year period, and has been formally reviewed at stages throughout its progress. The 1987 review towards the end of Phase 2 identified a number of technical objectives for continuing research and proposed that the initial design stage of the deep HDR prototype should start. Phase 3A is now complete. It addressed: the feasibility of creating an underground HDR heat exchanger suitable for commercial operation; techniques for improving hydraulic performance and correcting short circuits in HDR systems; modeling of the performance, resource size and economic aspects of HDR systems. The work has been conducted by a number of contractors, including Cambome School of Mines, Sunderland and Sheffield City Polytechnics and RTZ Consultants Limited. This paper focuses upon the experimental work at Rosemanowes in Cornwall and the recently completed conceptual design of a prototype HDR power station. The economics of HDR-generated electricity are also discussed and the conclusions of a 1990 program review are presented. Details of the HDR program to 1994, as announced by the UK Department of Energy in February 1991, are included.

MacDonald, Paul; Stedman, Ann; Symons, Geoff

1992-01-01T23:59:59.000Z

444

Hot Dry Rock energy annual report fiscal year 1992  

SciTech Connect

Hot Dry Rock technology took a giant leap forward this year as the long-awaited long-term flow test (LTFT) of the Phase II HDR reservoir at Fenton Hill got underway. Energy was produced on a twenty-four hour a day basis for a continuous period of nearly four months of steady-state testing. Hot water was brought to the surface at 90-100 gallons per minute (gpm) with temperatures of 180[degrees]C (356[degrees]F) and higher. During that time, the HDR plant achieved an on-line record of 98.8%. Surface temperature measurements and temperature logging deep within the wellbore confirmed that no decline in the average temperature of fluid produced from the reservoir occurred. Tracer experiments indicated that flow paths within the reservoir were undergoing continuous change during the test. Remarkably, it appeared that longer flow paths carried a larger proportion of the flow as the test proceeded, while more direct fluid pathways disappeared or carried a significantly reduced flow. In sum, access to hot rock appeared to improve over the span of the test. Water losses during the test averaged 10-12% and showed a slow long-term decline. These results confirmed what had been previously discovered in static pressurization testing: Water consumption declines significantly during extended operation of an HDR reservoir. In combination with a recent demonstration by the Japanese that water losses can be greatly reduced by the proper placement of multiple production wells, the recent results at Fenton Hill have effectively demonstrated that excessive water consumption should not be an issue for a properly engineered HDR facility at a well chosen site.

Duchane, D.V.; Winchester, W.W.

1993-04-01T23:59:59.000Z

445

Next stages in HDR technology development. [Hot Dry Rock (HDR)  

SciTech Connect

Twenty years of research and development have brought HDR heat mining technology from the purely conceptual stage to the establishment of an engineering-scale heat mine at Fenton Hill, NM. In April 1992, a long-term flow test (LTFT) of the HDR reservoir at Fenton Hill was begun. The test was carried out under steady-state conditions on a continuous basis for four months, but a major equipment failure in late July forced a temporary suspension of operations. Even this short test provided valuable information and extremely encouraging results as summarized below: There was no indication of thermal drawdown of the reservoir. There was evidence of increasing access to hot rock with time. Water consumption was in the rangki of 10--12%. Measured pumping costs were $0.003 per kilowatt of energy produced. Temperature logs conducted in the reservoir production zone during and after the flow test confirmed the fact that there was no decline in the average temperature of the fluid being produced from the reservoir. In fact, tracer testing showed that the fluid was taking more indirect pathways and thus contacting a greater amount of hot rock as the test progressed. Water usage quickly dropped to a level of 10--15 gallons per minute, an amount equivalent to about 10--12% of the injected fluid volume. At a conversion rate of 10--15%, these would translate to effective fuel costs'' of 2--3[cents] per kilowatt hour of electricity production potential. The completion of the LTFT will set the stage for commercialization of HDR but will not bring HDR technology to maturity. Relatively samples extensions of the current technology may bring significant improvements in efficiency, and these should be rapidly investigated. In the longer run, advanced operational concepts could further improve the efficiency of HDR energy extraction and may even offer the possibility of cogeneration schemes which solve both energy and water problems throughout the world.

Duchane, D.V.

1993-01-01T23:59:59.000Z

446

The Palaeomagnetism of Late Cenozoic Volcanic Rocks from Kenya and Tanzania  

Science Journals Connector (OSTI)

......Cenozoic Volcanic Rocks from Kenya and Tanzania T. A. Reilly P. K. S. Raja A. E...from the volcanic province of northern Tanzania, Nature Phys. Sci., 229, 19-20...Cenozoic Volcanic Rocks from Kenya and Tanzania T .A. Reilly Geological Survey of Ireland......

T. A. Reilly; P. K. S. Raja; A. E. Mussett; A. Brock

1976-06-01T23:59:59.000Z

447

The Palaeomagnetism of Late Cenozoic Volcanic Rocks from Kenya and Tanzania  

Science Journals Connector (OSTI)

......Cenozoic Volcanic Rocks from Kenya and Tanzania T. A. Reilly P. K. S. Raja A. E...from the volcanic province of northern Tanzania, Nature Phys. Sci., 229, 19-20...Cenozoic Volcanic Rocks from Kenya and Tanzania T. A. Reilly Geological Survey of Ireland......

T. A. Reilly; P. K. S. Raja; A. E. Mussett; A. Brock

1958-12-01T23:59:59.000Z

448

Petford, N. and McCaffrey, K.J.W. (Eds). Hydrocarbons in Crystalline Rocks.:  

Science Journals Connector (OSTI)

...igneous or crystalline basement rocks. Nick Petfords excellent paper examines the controls...igneous or crystalline basement rocks. Nick Petford's excellent paper examines the...can be properly understood. G. M. GADD Merritt, J.W., Auton, C.A., Connell...

C. D. Clerk

449

Episodic Rifting of Phanerozoic Rocks in the Victoria Land Basin, Western Ross Sea, Antarctica  

Science Journals Connector (OSTI)

...Geological Survey multichannel seismic-reflection tracklines, and location of seismic line 407 (Fig. 2). 1085 the axis tow art iions of naginatic rocks. The faultsap-pear to cut sedimentary rocks near the seafloor and to show an increasing dis-Olacement...

ALAN K. COOPER; F. J. DAVEY

1985-09-13T23:59:59.000Z

450

URTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic  

E-Print Network (OSTI)

by 20%. Introduction: Thermal fracturing Injection of cold fluids into reservoir rock, induces thermalURTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic Fracturing of Gas Shales Saeid of any part of this paper without the written consent of URTeC is prohibited. Summary Thermal shock

Patzek, Tadeusz W.

451

NITROGEN REMOVAL FOR ON-SITE SEWAGE DISPOSAL: A RECIRCULATING SAND FILTER/ROCK TANK DESIGN  

E-Print Network (OSTI)

NITROGEN REMOVAL FOR ON-SITE SEWAGE DISPOSAL: A RECIRCULATING SAND FILTER/ROCK TANK DESIGN, C. G. McKiel ABSTRACT: The nitrogen removal abilities of recirculating sand filter/rock tank (RSF) systems and conventional septic tank/soil absorption trench systems were compared in a field laboratory

Gold, Art

452

Documenting Visual Quality Controls on the Evaluation of Petroleum Reservoir-rocks through  

E-Print Network (OSTI)

) processes control the distribution of porosity and permeability within petroleum reservoir rocks section in a time unit. The values and distribution of porosity and permeability within reservoir rocks and prediction of the quality (porosity, permeability) of petroleum reservoirs during their exploration

Oliveira, Manuel M.

453

Quantification and Prediction of the 3D Pore Network Evolution in Carbonate Reservoir Rocks  

E-Print Network (OSTI)

Quantification and Prediction of the 3D Pore Network Evolution in Carbonate Reservoir Rocks E. DeD Pore Network Evolution in Carbonate Reservoir Rocks -- This study presents an integrated approach that allows the reconstruction and prediction of 3D pore structure modifications and porosity/permeability

Boyer, Edmond

454

Eric Moulton, Ferri Hassani, Pejman Nekoovaght Microwave-Assisted Heating in Rock  

E-Print Network (OSTI)

Eric Moulton, Ferri Hassani, Pejman Nekoovaght Microwave-Assisted Heating in Rock INTRODUCTION to expensive replacements. Expansive heating through microwaves breaks up the rock, which reduces the stress the mechanisms and parameters governing the heating rate of a material. Department of Mining and Materials

Barthelat, Francois

455

Making sense of Chalk: a total-rock approach to its Engineering Geology  

Science Journals Connector (OSTI)

...drive (330). In the north portal area the fracturing is more...post-construction rock fall at the north portal in 1994 smashed the brick...when little traffic and no pedestrians were around. A smaller rock fall at the southern portal resulted in chalk blocks...

R. N. Mortimore

456

Can Rock-Eval pyrolysis assess the biogeochemical composition of organic matter during peatification?  

E-Print Network (OSTI)

as a screening tool to investigate soil organic matter (SOM) chemistry and vulnerability. In order to test the validity of Rock-Eval as an indicator of SOM chemistry and of OM transformations, we compared classical Rock-Eval-derived parameters (Total Organic Carbon - TOC, Hydrogen Index - HI and Oxygen Index - OI

Boyer, Edmond

457

Final Report: Geothermal Dual Acoustic Tool for Measurement of Rock Stress  

SciTech Connect

This paper outlines the technology need for a rock formation stress measurement in future EGS wells. This paper reports on the results of work undertaken under a Phase I, DOE/SBIR on the feasibility to build an acoustic well logging tool for measuring rock formation stress.

Normann, Randy A.

2014-12-01T23:59:59.000Z

458

Using LIDAR in Highway Rock Cuts Norbert H. Maerz, Ph. D., P. Eng,  

E-Print Network (OSTI)

the data needed to begin the process of modeling the rock raveling process. INTRODUCTION LIDAR damage, injury, and even death. Highways impeded by even small spills of rock material by blasting techniques to facilitate the highway construction. A constant danger to the motoring public

Maerz, Norbert H.

459

Who are Climbing the Walls? An Exploration of the Social World of Indoor Rock Climbing  

E-Print Network (OSTI)

and attention has been focused on completing my study. I would like to thank the rock climbing community at Texas A&M for being so welcoming and for being willing to open up their community and share themselves with the leisure studies world. They have... ................................................................................. 39 Serious Leisure .................................................................... 44 Indoor Rock Climbing Social World ? The Climbing Community...

Kurten, Jason Henry

2011-02-22T23:59:59.000Z

460

Rock glacier surface motion in Beacon Valley, Antarctica, from synthetic-aperture radar interferometry  

E-Print Network (OSTI)

al., 1998]. [5] Although subsurface ice in Beacon Valley has long been known [Linkletter et al., 1973Rock glacier surface motion in Beacon Valley, Antarctica, from synthetic-aperture radar of rock glaciers in the Beacon Valley sector of the McMurdo Dry Valleys, in East Antarctica, as part

Fountain, Andrew G.

Note: This page contains sample records for the topic "tomography rock density" 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

IMA Preprints Series (2002) Micro-and macro-scopic models of rock fracture  

E-Print Network (OSTI)

IMA Preprints Series (2002) Micro- and macro-scopic models of rock fracture Donald L. Turcotte to some earthquakes. Key words: rock mechanics, damage, fracture, critical point, power-law scaling, self involve a sin- gle fracture propagating through an homogeneous solid. However, this is an idealized case

462

IMA Preprints Series (2002) Micro and macroscopic models of rock fracture  

E-Print Network (OSTI)

IMA Preprints Series (2002) Micro­ and macro­scopic models of rock fracture Donald L. Turcotte to some earthquakes. Key words: rock mechanics, damage, fracture, critical point, power­law scaling, self involve a sin­ gle fracture propagating through an homogeneous solid. However, this is an idealized case

463

THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK  

E-Print Network (OSTI)

97505 THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK between a hot dry rock (HDR) geothermal energy source and the power requirements for the conversion of biomass to fuel ethanol is considerable. In addition, combining these two renewable energy resources

464

Scale dependence of sorption coefficients for contaminant transport in saturated fractured rock  

E-Print Network (OSTI)

Scale dependence of sorption coefficients for contaminant transport in saturated fractured rock. In this paper, we have developed a scaling methodology to upscale matrix sorption coefficients for fractured for upscaling the sorption coefficients in a saturated, fractured rock system. The derived upscaling equations

Lu, Zhiming

465

RIS-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT  

E-Print Network (OSTI)

;#12;- 5 - 1. INTRODUCTION The storage of heat producing radioactive waste in rock salt, will produce of the brine migration under influence of the decreasing heat production in the waste. A general expressionRISÃ?-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT Mathematical treatment

466

EXPERIMENTAL VERIFICATION OF THE LOAD-FOLLOWING POTENTIAL OF A HOT DRY ROCK GEOTHERMAL RESERVOIR  

E-Print Network (OSTI)

was about 2 minutes. INTRODUCTION The Hot Dry Rock (HDR) geothermal reservoir at Fenton Hill, New MexicoEXPERIMENTAL VERIFICATION OF THE LOAD-FOLLOWING POTENTIAL OF A HOT DRY ROCK GEOTHERMAL RESERVOIR Mexico 87545 ABSTRACT A recent 6-day flow experiment conducted at the Los Alamos National Laboratory

467

Geochemical characteristics and correlation of oil and nonmarine source rocks from Mongolia  

Science Journals Connector (OSTI)

...rocks and petroleum systems of...northwest China: AAPG Bulletin...All-Union Export and Import, 291-p...Marine and Petroleum Geol-ogy...rocks and petroleum systems of...northwest China: AAPG Bulletin...All-Union Export and Import, 291 p...

Cari L. Johnson; Todd J. Greene; David A. Zinniker; J. Michael Moldowan; Marc S. Hendrix; Alan R. Carroll

468

BENEFITS OF LIVING IN A BUILDING: BIG BROWN BATS (EPTESICUS FUSCUS) IN ROCKS VERSUS BUILDINGS  

E-Print Network (OSTI)

BENEFITS OF LIVING IN A BUILDING: BIG BROWN BATS (EPTESICUS FUSCUS) IN ROCKS VERSUS BUILDINGS CORI) roosting in natural and building roosts in the prairies of southeastern Alberta. During pregnancy, bats roosting in buildings used torpor less frequently than did rock- roosting bats, but achieved lower body

Barclay, Robert

469

New Method of Assessing Absolute Permeability of Natural Methane Hydrate Sediments by Microfocus X-ray Computed Tomography  

Science Journals Connector (OSTI)

The structure of natural-gas hydrate sediments was studied using a microfocus X-ray computed-tomography (CT) system. The free-gas spaces, sand particles, and hydrates or ices were identified from the obtained three-dimensional (3-D) images. We used CT data to analyze a continuous pore, which allows gas and water flow. The absolute permeability of sediment samples correlated well with horizontal-channel density in terms of direction. The grain-size distribution in sediment samples depended on the spread of flow channels. The average area and length of a channel evidently have little effect on absolute permeability. We determined that absolute permeability increased with the ratio of horizontal- to vertical-channel numbers. It was clear that the number ratio of the horizontal to vertical channels is a predominant factor that determines absolute permeability in similar porosity ranges. These results indicate that the pore network in sediments can be useful for assessing permeability.

Yusuke Jin; Junko Hayashi; Jiro Nagao; Kiyofumi Suzuki; Hideki Minagawa; Takao Ebinuma; Hideo Narita

2007-01-01T23:59:59.000Z

470

2010 DOE National Science Bowl® Photos - Little Rock Central High School  

Office of Science (SC) Website

Little Rock Central High School Little Rock Central High School National Science Bowl® (NSB) NSB Home About National Science Bowl Contacts Regional Science Bowl Coordinators National Science Bowl FAQ's Alumni Past National Science Bowl Winners Past National Science Bowl Photos National Science Bowl Logos High School Middle School Attending National Event Volunteers 2013 Competition Results News Media WDTS Home Contact Information National Science Bowl® U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: 202-586-6702 E: National.Science.Bowl@science.doe.gov 2010 National Science Bowl Photos 2010 DOE National Science Bowl® Photos - Little Rock Central High School Print Text Size: A A A RSS Feeds FeedbackShare Page Little Rock Central High School students from Little Rock, AR tour the

471

Candidate Sites For Future Hot Dry Rock Development In The United States |  

Open Energy Info (EERE)

Candidate Sites For Future Hot Dry Rock Development In The United States Candidate Sites For Future Hot Dry Rock Development In The United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Candidate Sites For Future Hot Dry Rock Development In The United States Details Activities (8) Areas (4) Regions (0) Abstract: Generalized geologic and other data are tabulated for 24 potential hot dry rock (HDR) sites in the contiguous United States. The data show that HDR resources occur in many geologic and tectonic settings. Potential reservoir rocks at each prospect are described and each system is categorized according to inferred heat sources. The Fenton Hill area in New Mexico is discussed in detail because this region may be considered ideal for HDR development. Three other prospectively valuable localities are

472

An estimation of the penetration rate of rotary drills using the Specific Rock Mass Drillability index  

Science Journals Connector (OSTI)

The main purpose of the present study was to provide a practical, convenient drillability prediction model based on rock mass characteristics, geological sampling from blast holes, and drill operational factors. Empirical equations that predict drill penetration rate have been developed using statistical analyses of data from the Sarcheshmeh Copper Mine. Seven parameters of the rock or rock mass, including uniaxial compressive strength (UCS) of the rock, Schmidt hammer hardness value, quartz content, fragment size (d80), alteration, and joint dip, are included in the model along with two operational parameters of the rotary drill, bit rotational speed and thrust. These parameters were used to predict values of the newly developed Specific Rock Mass Drillability (SRMD) index. Comparing measured SRMD values to those predicted by the multi-parameter linear, or nonlinear, regression models showed good agreement. The correlation coefficients were 0.82 and 0.81, respectively.

Alireza Cheniany; Khoshrou Seyed Hasan; Kourosh Shahriar; Jafar Khademi Hamidi

2012-01-01T23:59:59.000Z

473

Organic solvent alteration of hydraulic properties of sedimentary rocks of low permeability: a review  

SciTech Connect

A review of the current literature on hydrophysical interactions of organic solutes with sedimentary rocks of low permeability is presented. The motivation was the premise that low permeability rocks may act as secondary (aquifer) barriers for the containment of hazardous organic wastes, thus preventing these wastes from contaminating the groundwater. However, this premise may be incorrect if organic wastes can affect the hydraulic conductivity of these rocks. The results indicate that very little work has been done concerning interactions of organics with consolidated subsurface materials. Available information on three related topics was summarized: the effect of organic compounds on the hydrophysical properties of clays, case studies concerning the interactions of organic compounds with clays and sedimentary rocks, and the effect of shales on inorganic transport. These studies give an indication of some research areas that need to be explored with regard to the effect of organic compounds on the hydrophysical properties of sedimentary rocks; these research needs are briefly summarized. 42 refs.

Sklarew, D.S.

1985-05-01T23:59:59.000Z

474

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated  

Open Energy Info (EERE)

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Hydrothermal System At The Geysers, Sonoma County, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Hydrothermal System At The Geysers, Sonoma County, California Details Activities (5) Areas (1) Regions (0) Abstract: The Geysers, a vapor-dominated hydrothermal system, is developed in host rock of the Franciscan Formation, which contains veins of quartz and calcite whose Δ18O values record the temperatures and isotopic compositions of fluids prevailing during at least two different episodes of rock-fluid interaction. The first episode took place at about 200°C, during which marine silica and carbonate apparently interacted with ocean

475

Software-defined Radio Based Wireless Tomography: Experimental Demonstration and Verification  

SciTech Connect

This letter presents an experimental demonstration of software-defined-radio-based wireless tomography using computer-hosted radio devices called Universal Software Radio Peripheral (USRP). This experimental brief follows our vision and previous theoretical study of wireless tomography that combines wireless communication and RF tomography to provide a novel approach to remote sensing. Automatic data acquisition is performed inside an RF anechoic chamber. Semidefinite relaxation is used for phase retrieval, and the Born iterative method is utilized for imaging the target. Experimental results are presented, validating our vision of wireless tomography.

Bonior, Jason D [ORNL; Hu, Zhen [Tennessee Technological University; Guo, Terry N. [Tennessee Technological University; Qiu, Robert C. [Tennessee Technological University; Browning, James P. [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Wicks, Michael C. [University of Dayton Research Institute

2015-01-01T23:59:59.000Z

476

E-Print Network 3.0 - aids computed tomography Sample Search...  

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

of Mathematics, Tufts University Collection: Mathematics 2 CAT scan and RadonX-ray transform Relations with the Fourier transform. Dual Radon Summary: problems X-ray tomography...

477

E-Print Network 3.0 - attenuated vector tomography Sample Search...  

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

Kansas State University Collection: Mathematics 2 CAT scan and RadonX-ray transform Relations with the Fourier transform. Dual Radon Summary: Optical Tomography Novel...

478

Video-rate fluorescence diffuse optical tomography for in vivo sentinel lymph node imaging  

Science Journals Connector (OSTI)

We have developed a fiber-based, video-rate fluorescence diffuse optical tomography (DOT) system for noninvasive in vivo sentinel lymph node (SLN) mapping. Concurrent acquisition of...

Solomon, Metasebya; White, Brian R; Nothdruft, Ralph E; Akers, Walter; Sudlow, Gail; Eggebrecht, Adam T; Achilefu, Samuel; Culver, Joseph P

2011-01-01T23:59:59.000Z

479

Quantitative and dynamic measurements of biological fresh samples with X-ray phase contrast tomography  

Science Journals Connector (OSTI)

Quantitative measurements of biological fresh samples based on three-dimensional densitometry using X-ray phase contrast tomography are presented.

Hoshino, M.

2014-10-08T23:59:59.000Z

480

Velocity Variation Assessment of Red Blood Cell Aggregation with Spectral Domain Doppler Optical Coherence Tomography  

E-Print Network (OSTI)

J. G. Fujimoto. Optical coherence tomog- raphy. Science 254:spectral domain low coherence interferometry and retinalsedimentation on optical coherence tomography signals from

Xu, Xiangqun; Yu, Lingfeng; Chen, Zhongping

2010-01-01T23:59:59.000Z

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


481

Four-dimensional optical coherence tomography imaging of total liquid ventilated rats  

Science Journals Connector (OSTI)

Optical coherence tomography (OCT) can be utilized for the spatially and temporally resolved visualization of alveolar tissue and its dynamics in rodent models, which allows the...

Kirsten, Lars; Schnabel, Christian; Gaertner, Maria; Koch, Edmund

482

Quantitative measurements of strain and birefringence with common-path polarization-sensitive optical coherence tomography  

Science Journals Connector (OSTI)

We demonstrate the first system for optical coherence tomography (OCT) that enables simultaneous measurement of quantitative birefringence and strain in biological samples using a...

Marvdashti, Tahereh; Duan, Lian; Lurie, Kristen L; Smith, Gennifer T; Ellerbee, Audrey K

2014-01-01T23:59:59.000Z

483

Molecular architecture of axonemal microtubule doublets revealedby cryo-electron tomography  

SciTech Connect

The axoneme, which forms the core of eukaryotic flagella and cilia, is one of the largest macromolecular machines with a structure that is largely conserved from protists to mammals. Microtubule doublets are structural components of axonemes containing a number of proteins besides tubulin, and are usually found in arrays of nine doublets arranged around two singlet microtubules. Coordinated sliding of adjacent doublets, which involves a host of other proteins in the axoneme, produces periodic beating movements of the axoneme. We have obtained a 3D density map of intact microtubule doublets using cryo-electron tomography and image averaging. Our map, with a resolution of about 3 nm, provides insights into locations of particular proteins within the doublets and the structural features of the doublets that define their mechanical properties. We identify likely candidates for several of these non-tubulin components of the doublets. This work offers novel insight on how tubulin protofilaments and accessory proteins attach together to form the doublets and provides a structural basis for understanding doublet function in axonemes.

Sui, Haixin; Downing, Kenneth H.

2006-05-22T23:59:59.000Z

484

3D Jet Tomography of Twisted Strongly Coupled Quark Gluon Plasmas  

E-Print Network (OSTI)

The triangular enhancement of the rapidity distribution of hadrons produced in p+A reactions relative to p+p is a leading order in A^{1/3}/log(s) violation of longitudinal boost invariance at high energies. In A+A reactions this leads to a trapezoidal enhancement of the local rapidity density of produced gluons. The local rapidity gradient is proportional to the local participant number asymmetry, and leads to an effective rotation in the reaction plane. We propose that three dimensional jet tomography, correlating the long range rapidity and azimuthal dependences of the nuclear modification factor, R_{AA}(\\eta,\\phi,p_\\perp; b>0), can be used to look for this intrinsic longitudinal boost violating structure of $A+A$ collisions to image the produced twisted strongly coupled quark gluon plasma (sQGP). In addition to dipole and elliptic azimuthal moments of R_{AA}, a significant high p_\\perp octupole moment is predicted away from midrapidity. The azimuthal angles of maximal opacity and hence minima of R_{AA} are rotated away from the normal to the reaction plane by an `Octupole Twist' angle, \\theta_3(\\eta), at forward rapidities.

A. Adil; M. Gyulassy

2005-05-01T23:59:59.000Z

485

Combining weak lensing tomography with halo clustering to probe dark energy  

Science Journals Connector (OSTI)

Two methods of constraining the properties of dark energy are weak lensing tomography and cluster counting. Uncertainties in mass calibration of clusters can be reduced by using the properties of halo clustering (the clustering of clusters). However, within a single survey, weak lensing and halo clustering probe the same density fluctuations. We explore the question of whether this information can be used twice—once in weak lensing and then again in halo clustering to calibrate cluster masses—or whether the combined dark energy constraints are weaker than the sum of the individual constraints. For a survey like the Dark Energy Survey (DES), we find that the cosmic shearing of source galaxies at high redshifts is indeed highly correlated with halo clustering at lower redshifts. Surprisingly, this correlation does not degrade cosmological constraints for a DES-like survey, and in fact, constraints are marginally improved since the correlations themselves act as additional observables. This considerably simplifies the analysis for a DES-like survey: when weak lensing and halo clustering are treated as independent experiments, the combined dark energy constraints (cluster counts included) are accurate if not slightly conservative. Our findings mirror those of Takada and Bridle, who investigated correlations between the cosmic shear and cluster counts.

Charles Shapiro and Scott Dodelson

2007-10-18T23:59:59.000Z

486

Definition: Power density | Open Energy Information  

Open Energy Info (EERE)

density density Jump to: navigation, search Dictionary.png Power density The rate of energy flow (power) per unit volume, area or mass. Common metrics include: horsepower per cubic inch, watts per square meter and watts per kilogram.[1][2] View on Wikipedia Wikipedia Definition Power density (or volume power density or volume specific power) is the amount of power (time rate of energy transfer) per unit volume. In energy transformers like batteries, fuel cells, motors, etc. but also power supply units or similar, power density refers to a volume. It is then also called volume power density which is expressed as W/m. Volume power density is sometimes an important consideration where space is constrained. In reciprocated internal combustion engines, power density- power per swept

487

Influence of Penetration Rate and Indenter Diameter in Strength Measurement by Indentation Testing on Small Rock Specimens  

Science Journals Connector (OSTI)

...Indentation testing has been developed as an unconventional method to determine intact rock strength using small rock specimens within the size of drill cuttings. In previous investigations involving indentati...

Mohammad Haftani; Bahman Bohloli; Alireza Nouri…

2014-03-01T23:59:59.000Z

488

Mitochondrial Phylogeography of Rock-Dwelling Cichlid Fishes Reveals Evolutionary Influence of Historical Lake Level Fluctuations of Lake Tanganyika, Africa  

Science Journals Connector (OSTI)

...of Rock-Dwelling Cichlid Fishes Reveals Evolutionary Influence...intermittent lake basins. Seismic data indicate that extreme...of rock-dwelling cichlid fishes reveals evolutionary influence...intermittent lake basins. Seismic data indicate that extreme...

1996-01-01T23:59:59.000Z

489

Density functional theory of electrowetting  

E-Print Network (OSTI)

The phenomenon of electrowetting, i.e., the dependence of the macroscopic contact angle of a fluid on the electrostatic potential of the substrate, is analyzed in terms of the density functional theory of wetting. It is shown that electrowetting is not an electrocapillarity effect, i.e., it cannot be consistently understood in terms of the variation of the substrate-fluid interfacial tension with the electrostatic substrate potential, but it is related to the depth of the effective interface potential. The key feature, which has been overlooked so far and which occurs naturally in the density functional approach is the structural change of a fluid if it is brought into contact with another fluid. These structural changes occur in the present context as the formation of finite films of one fluid phase in between the substrate and the bulk of the other fluid phase. The non-vanishing Donnan potentials (Galvani potential differences) across such film-bulk fluid interfaces, which generically occur due to an unequal partitioning of ions as a result of differences of solubility contrasts, lead to correction terms in the electrowetting equation, which become relevant for sufficiently small substrate potentials. Whereas the present density functional approach confirms the commonly used electrocapillarity-based electrowetting equation as a good approximation for the cases of metallic electrodes or electrodes coated with a hydrophobic dielectric in contact with an electrolyte solution and an ion-free oil, a significantly reduced tendency for electrowetting is predicted for electrodes coated with a dielectric which is hydrophilic or which is in contact with two immiscible electrolyte solutions.

Markus Bier; Ingrid Ibagon

2014-02-10T23:59:59.000Z

490

Estimation of Density of Biodiesel  

Science Journals Connector (OSTI)

In addition, the numeric value for coefficient e is very small (?0.00001) and the nd(ave) of most biodiesels are not greater than 2. Therefore, the product of e × nd(ave) can be neglected without affecting the accuracy of the calculation and eq 30 is good for estimation of density of biodiesel. ... Interestingly, the %AAD for mixed biodiesel (0.38) is lower than those of pure (0.41%) and total biodiesels. ... (21) The model cannot differentiate a mixed biodiesel from pure biodiesels. ...

Suriya Phankosol; Kaokanya Sudaprasert; Supathra Lilitchan; Kornkanok Aryusuk; Kanit Krisnangkura

2014-06-16T23:59:59.000Z

491

Design of Mega-Voltage X-ray Digital Radiography and Computed Tomography Performance Phantoms  

SciTech Connect

A number of fundamental scientific questions have arisen concerning the operation of high-energy DR and CT systems. Some of these questions include: (1) How deeply can such systems penetrate thickly shielded objects? (2) How well can such systems distinguish between dense and relatively high Z materials such as lead, tungsten and depleted uranium and lower Z materials such as steel, copper and tin? (3) How well will such systems operate for a uranium material which is an intermediate case between low density yellowcake and high density depleted uranium metal? These questions have led us to develop a set of phantoms to help answer these questions, but do not have any direct bearing on any smuggling concern. These new phantoms are designed to allow a systemic exploration of these questions by gradually varying their compositions and thicknesses. These phantoms are also good probes of the blurring behavior of radiography and tomography systems. These phantoms are composed of steel ({rho} assumed to be 7.8 g/cc), lead ({rho} assumed to be 11.4 g/cc), tungsten ({rho} assumed to be 19.25 g/cc), uranium oxide (UO{sub 3}) ({rho} assumed to be 4.6 g/cc), and depleted uranium (DU) ({rho} assumed to be 18.9 g/cc). There are five designed phantoms described in this report: (1) Cylindrical shells of Tungsten and Steel; (2) Depleted Uranium Inside Tungsten Hemi-cube Shells; (3) Nested Spherical Shells; (4) UO{sub 3} Cylinder; and (5) Shielded DU Sphere.

Aufderheide, M B; Martz, H E; Curtin, M

2009-06-22T23:59:59.000Z

492

Combining Density Functional Theory and Density Matrix Functional Theory Daniel R. Rohr1  

E-Print Network (OSTI)

Combining Density Functional Theory and Density Matrix Functional Theory Daniel R. Rohr1 , Julien and CNRS, 4 place Jussieu, 75252 Paris, France We combine density-functional theory with density cleavage is an ubiquitous process for chemistry. Density-matrix functional theory (DMFT) (see, e.g., Refs

Paris-Sud XI, Université de

493

Statistical model for source rock maturity and organic richness using well-log data, Bakken Formation, Williston basin, United States  

SciTech Connect

A study of the Bakken Formation, the proposed source rock for much of the hydrocarbons generated in the Williston basin, was done using bulk density, neutron porosity, and resistivity logs, and formation temperatures. Principal components, cluster, and discriminant analyses indicate that the present-day distribution of organic matter controls much of the variability in the log values. Present-day total organic carbon values are high in the central part of the basin near northeastern Montana and along the east edge of the basin, and low in the area of the Nesson anticline and along the southwest edge of the basin. Using a regression of density on temperature and the analysis of residuals from this regression, hydrocarbon maturity effects were partially separated from depositional effects. These analyses suggest that original concentrations of organic matter were low near the limits of the Bakken and increased to a high in northeastern Montana. The pre-maturation distribution of total organic carbon and the present-day total organic carbon distribution, as determined by statistical analyses of well-log data, agree with the results of geochemical analyses. The distributions can be explained by a relatively simple depositional pattern and thermal history for the Bakken. 6 figures, 3 tables.

Krystinik, K.B.; Charpentier, R.R.

1987-01-01T23:59:59.000Z

494

RADIOACTIVE WASTE STORAGE IN MINED CAVERNS IN CRYSTALLINE ROCK-RESULTS OF FIELD INVESTIGATIONS AT STRIPA, SWEDEN  

E-Print Network (OSTI)

Waste Storage in Mined Caverns—Program Summary. LawrenceWASTE STORAGE IN MINED CAVERNS IN CRYSTALLINE ROCK- BESULTS

Witherspoon, P.A.

2010-01-01T23:59:59.000Z

495

Numerical studies of fluid-rock interactions in Enhanced Geothermal Systems (EGS) with CO2 as working fluid  

E-Print Network (OSTI)

2006), “The Future of Geothermal Energy Impact of Enhanced2000), “A Hot Dry Rock Geothermal Energy Concept Utilizing

Xu, Tianfu; Pruess, Karsten; Apps, John

2008-01-01T23:59:59.000Z

496

3D Reconstruction of Intricate Archean Microbial Structures Using Neutron Computed Tomography and Serial SectioningIN43B-0331 Abstract Project Goals  

E-Print Network (OSTI)

Tomography and Serial SectioningIN43B-0331 Abstract Project Goals Background Methods Neutron Computed using both serial sectioning and neutron computed tomography (NCT). Reconstruction techniques vary mechanisms for ancient microbial communities Neutron Computed Tomography Serial Sectioning Samples were

Hamann, Bernd

497

Evaluation of Used Fuel Disposition in Clay-Bearing Rock  

SciTech Connect

Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties (low permeability), geochemically reduced conditions, anomalous groundwater pressures, and widespread geologic occurrence. Clay/shale rock formations are characterized by their high content of clay minerals such as smectites and illites where diffusive transport and chemisorption phenomena predominate. These, in addition to low permeability, are key attributes of shale to impede radionuclide mobility. Shale host-media has been comprehensively studied in international nuclear waste repository programs as part of underground research laboratories (URLs) programs in Switzerland, France, Belgium, and Japan. These investigations, in some cases a decade or more long, have produced a large but fundamental body of information spanning from site characterization data (geological, hydrogeological, geochemical, geomechanical) to controlled experiments on the engineered barrier system (EBS) (barrier clay and seals materials). Evaluation of nuclear waste disposal in shale formations in the USA was conducted in the late 70’s and mid 80’s. Most of these studies evaluated the potential for shale to host a nuclear waste repository but not at the programmatic level of URLs in international repository programs. This report covers various R&D work and capabilities relevant to disposal of heat-generating nuclear waste in shale/argillite media. Integration and cross-fertilization of these capabilities will be utilized in the development and implementation of the shale/argillite reference case planned for FY15. Disposal R&D activities under the UFDC in the past few years have produced state-of-the-art modeling capabilities for coupled Thermal-Hydrological-Mechanical-Chemical (THMC), used fuel degradation (source term), and thermodynamic modeling and database development to evaluate generic disposal concepts. The THMC models have been developed for shale repository leveraging in large part on the information garnered in URLs and laboratory data to test and demonstrate model prediction capability and to accurately represent behavior of the EBS and the natural (barrier) system (NS). In addition, experimental work to improve our understanding of clay barrier interactions and TM couplings at high temperatures are key to evaluate thermal effects as a result of relatively high heat loads from waste and the extent of sacrificial zones in the EBS. To assess the latter, experiments and modeling approaches have provided important information on the stability and fate of barrier materials under high heat loads. This information is central to the assessment of thermal limits and the implementation of the reference case when constraining EBS properties and the repository layout (e.g., waste package and drift spacing). This report is comprised of various parts, each one describing various R&D activities applicable to shale/argillite media. For example, progress made on modeling and experimental approaches to analyze physical and chemical interactions affecting clay in the EBS, NS, and used nuclear fuel (source term) in support of R&D objectives. It also describes the development of a reference case for shale/argillite media. The accomplishments of these activities are summarized as follows: ? Development of a reference case for shale/argillite; ? Investigation of Reactive Transport and Coupled THM Processes in EBS: FY14; ? Update on Experimental Activities on Buffer/Backfill Interactions at elevated Pressure and Temperature; ? Thermodynamic Database Development: Evaluation Strategy, Modeling Tools, First-Principles Modeling of Clay, and Sorption Database Assessment; ? ANL Mixed Potential Model For Used Fuel Degradation: Application to Argillite and Crystalline Rock Environments.

Carlos F. Jové Colón; Philippe F. Weck; David H. Sassani; Liange Zheng; Jonny Rutqvist; Carl I. Steefel; Kunhwi Kim; Seiji Nakagawa; James Houseworth; Jens Birkholzer; Florie A. Caporuscio; Michael Cheshire; Michael S. Rearick; Mary K. McCarney; Mavrik Zavarin; Ana Benedicto; Annie B. Kersting; Mark Sutton; James Jerden; Kurt E. Frey; Jacqueline M. Copple; William Ebert

2014-08-29T23:59:59.000Z

498

Small-Angle Neutron Scattering and the Microstructure of Rocks  

Science Journals Connector (OSTI)

...formulation of Equation (19) for a macroscopic sample of aerogels containing mass fractal particles of known density is given...Courtens E (1988) Structure and self-similarity of silica aerogels. Phys Rev B 37:6500-6503 Vogel SC, Priesmeyer H-G...

Andrzej P. Radlinski

499

Fracture and Healing of Rock Salt Related to Salt Caverns  

SciTech Connect

In recent years, serious investigations of potential extension of the useful life of older caverns or of the use of abandoned caverns for waste disposal have been of interest to the technical community. All of the potential applications depend upon understanding the reamer in which older caverns and sealing systems can fail. Such an understanding will require a more detailed knowledge of the fracture of salt than has been necessary to date. Fortunately, the knowledge of the fracture and healing of salt has made significant advances in the last decade, and is in a position to yield meaningful insights to older cavern behavior. In particular, micromechanical mechanisms of fracture and the concept of a fracture mechanism map have been essential guides, as has the utilization of continuum damage mechanics. The Multimechanism Deformation Coupled Fracture (MDCF) model, which is summarized extensively in this work was developed specifically to treat both the creep and fracture of salt, and was later extended to incorporate the fracture healing process known to occur in rock salt. Fracture in salt is based on the formation and evolution of microfractures, which may take the form of wing tip cracks, either in the body or the boundary of the grain. This type of crack deforms under shear to produce a strain, and furthermore, the opening of the wing cracks produce volume strain or dilatancy. In the presence of a confining pressure, microcrack formation may be suppressed, as is often the case for triaxial compression tests or natural underground stress situations. However, if the confining pressure is insufficient to suppress fracture, then the fractures will evolve with time to give the characteristic tertiary creep response. Two first order kinetics processes, closure of cracks and healing of cracks, control the healing process. Significantly, volume strain produced by microfractures may lead to changes in the permeability of the salt, which can become a major concern in cavern sealing and operation. The MDCF model is used in three simulations of field experiments in which indirect measures were obtained of the generation of damage. The results of the simulations help to verify the model and suggest that the model captures the correct fracture behavior of rock salt. The model is used in this work to estimate the generation and location of damage around a cylindrical storage cavern. The results are interesting because stress conditions around the cylindrical cavern do not lead to large amounts of damage. Moreover, the damage is such that general failure can not readily occur, nor does the extent of the damage suggest possible increased permeation when the surrounding salt is impermeable.

Chan, K.S.; Fossum, A.F.; Munson, D.E.

1999-03-01T23:59:59.000Z

500

A model for the development of a lobate alpine rock glacier in southwest Colorado, USA: implications for water on Mars  

E-Print Network (OSTI)

...................................................................................... 56 Water Discharge Characteristics ..................................................... 61 Closing Remarks ............................................................................ 64 III GPR SURVEY OF A LOBATE ROCK GLACIER IN YANKEE BOY BASIN, CO..................................................................................... 160 Engineering Aspects: Rock Glacier Geomorphology .................... 160 Model Based on Yankee Boy Rock Glacier .................................. 162 A Surrogate for Landforms on Mars ............................................. 162 Convergence...

Degenhardt, John Jerome

2004-09-30T23:59:59.000Z