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Note: This page contains sample records for the topic "tracer interpretation verification" from the National Library of EnergyBeta (NLEBeta).
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1

Tracers and Tracer Testing: Design, Implementation, Tracer Selection, and Interpretation Methods  

SciTech Connect (OSTI)

Conducting a successful tracer test requires adhering to a set of steps. The steps include identifying appropriate and achievable test goals, identifying tracers with the appropriate properties, and implementing the test as designed. When these steps are taken correctly, a host of tracer test analysis methods are available to the practitioner. This report discusses the individual steps required for a successful tracer test and presents methods for analysis. The report is an overview of tracer technology; the Suggested Reading section offers references to the specifics of test design and interpretation.

G. Michael Shook; Shannon L.; Allan Wylie

2004-01-01T23:59:59.000Z

2

Tracer Interpretation Using Temporal Moments on a Spreadsheet  

SciTech Connect (OSTI)

This report presents a method for interpreting geothermal tracer tests. The method is based on the first temporal moment (mean residence time) of the tracer in the subsurface. The individual steps required to interpret a tracer test are reviewed and discussed. And an example tracer test directs the user through the interpretation method. An Excel spreadsheet application of the interpretation method is a companion document to this report.

G. Michael Shook; J. Hope Forsmann

2005-06-01T23:59:59.000Z

3

Verification of flow processes in soils with combined sprinkling and dye tracer experiments  

E-Print Network [OSTI]

1 Verification of flow processes in soils with combined sprinkling and dye tracer experiments with sprinkling experiments and dye tracing under different rainfall intensities and soil moisture conditions. The dye tracer was continuously applied with the sprinkling water on 1 m2 plots. After the sprinkling

Weiler, Markus

4

Verification of Geothermal Tracer Methods in Highly Constrained...  

Open Energy Info (EERE)

tracers of varying rates of molecular diffusion. Exchange of heat energy between fracture and bulk rock (matrix) behaves in the same manner as the exchange of dissolved mass....

5

Quantitative interpretation of tracer test data | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: EnergyPotentialUrbanUtilityScalePVCapacityPulaski County, Kentucky:County, Georgia: Energy79.tracer test data

6

USING PERFLUOROCARBON TRACERS FOR VERIFICATION OF CAP AND COVER SYSTEMS PERFORMANCE.  

SciTech Connect (OSTI)

The Department of Energy (DOE) Environmental Management (EM) office has committed itself to an accelerated cleanup of its national facilities. The goal is to have much of the DOE legacy waste sites remediated by 2006. This includes closure of several sites (e.g., Rocky Flats and Fernald). With the increased focus on accelerated cleanup, there has been considerable concern about long-term stewardship issues in general, and verification and long-term monitoring (LTM) of caps and covers, in particular. Cap and cover systems (covers) are vital remedial options that will be extensively used in meeting these 2006 cleanup goals. Every buried waste site within the DOE complex will require some form of cover system. These covers are expected to last from 100 to 1000 years or more. The stakeholders can be expected to focus on system durability and sustained performance. DOE EM has set up a national committee of experts to develop a long-term capping (LTC) guidance document. Covers are subject to subsidence, erosion, desiccation, animal intrusion, plant root infiltration, etc., all of which will affect the overall performance of the cover. Very little is available in terms of long-term monitoring other than downstream groundwater or surface water monitoring. By its very nature, this can only indicate that failure of the cover system has already occurred and contaminants have been transported away from the site. This is unacceptable. Methods that indicate early cover failure (prior to contaminant release) or predict approaching cover failure are needed. The LTC committee has identified predictive monitoring technologies as a high priority need for DOE, both for new covers as well as existing covers. The same committee identified a Brookhaven National Laboratory (BNL) technology as one approach that may be capable of meeting the requirements for LTM. The Environmental Research and Technology Division (ERTD) at BNL developed a novel methodology for verifying and monitoring subsurface barriers (1,2). The technology uses perfluorocarbon tracers (PFTs) to determine flaws (e.g., holes or cracks) and high permeability areas in subsurface barriers. Gaseous tracers are injected on one side of the barrier and searched for on the opposite side of the barrier. The sampling grid, concentration, and time of arrival of the tracer(s) on the opposite side are used to determine the size and location of flaws and relative permeability of the barrier. In addition, there are multiple tracers available, which allows different tracers to be injected in different quadrants of the barrier. This yields additional information on transport phenomena of the barrier.

HEISER,J.; SULLIVAN,T.

2001-11-01T23:59:59.000Z

7

Interpretations of Tracer Tests Performed in the Culebra Dolomite at the Waste Isolation Pilot Plant Site  

SciTech Connect (OSTI)

This report provides (1) an overview of all tracer testing conducted in the Culebra Dolomite Member of the Rustler Formation at the Waste Isolation Pilot Plant (WPP) site, (2) a detailed description of the important information about the 1995-96 tracer tests and the current interpretations of the data, and (3) a summary of the knowledge gained to date through tracer testing in the Culebra. Tracer tests have been used to identify transport processes occurring within the Culebra and quantify relevant parameters for use in performance assessment of the WIPP. The data, especially those from the tests performed in 1995-96, provide valuable insight into transport processes within the Culebra. Interpretations of the tracer tests in combination with geologic information, hydraulic-test information, and laboratory studies have resulted in a greatly improved conceptual model of transport processes within the Culebra. At locations where the transmissivity of the Culebra is low (< 4 x 10{sup -6} m{sup 2}/s), we conceptualize the Culebra as a single-porosity medium in which advection occurs largely through the primary porosity of the dolomite matrix. At locations where the transmissivity of the Culebra is high (> 4 x 10{sup -6} m{sup 2}/s), we conceptualize the Culebra as a heterogeneous, layered, fractured medium in which advection occurs largely through fractures and solutes diffuse between fractures and matrix at multiple rates. The variations in diffusion rate can be attributed to both variations in fracture spacing (or the spacing of advective pathways) and matrix heterogeneity. Flow and transport appear to be concentrated in the lower Culebra. At all locations, diffusion is the dominant transport process in the portions of the matrix that tracer does not access by flow.

MEIGS,LUCY C.; BEAUHEIM,RICHARD L.; JONES,TOYA L.

2000-08-01T23:59:59.000Z

8

Formal verification of a static analyzer: abstract interpretation in type theory  

E-Print Network [OSTI]

Formal verification of a static analyzer: abstract interpretation in type theory Xavier Leroy Inria Paris-Rocquencourt xavier.leroy@inria.fr (Joint work with David Pichardie, Sandrine Blazy, Jacques-Henri Jourdan, and Vincent Laporte.) Abstract Static analysis is the automatic inference and checking of simple

Paris-Sud XI, Université de

9

Interpretation of Colloid-Homologue Tracer Test 10-03, Including Comparisons to Test 10-01  

SciTech Connect (OSTI)

This presentation covers the interpretations of colloid-homologue tracer test 10-03 conducted at the Grimsel Test Site, Switzerland, in 2010. It also provides a comparison of the interpreted test results with those of tracer test 10-01, which was conducted in the same fracture flow system and using the same tracers than test 10-03, but at a higher extraction flow rate. A method of correcting for apparent uranine degradation in test 10-03 is presented. Conclusions are: (1) Uranine degradation occurred in test 10-03, but not in 10-01; (2) Uranine correction based on apparent degradation rate in injection loop in test 11-02 seems reasonable when applied to data from test 10-03; (3) Colloid breakthrough curves quite similar in the two tests with similar recoveries relative to uranine (after correction); and (4) Much slower apparent desorption of homologues in test 10-03 than in 10-01 (any effect of residual homologues from test 10-01 in test 10-03?).

Reimus, Paul W. [Los Alamos National Laboratory

2012-06-26T23:59:59.000Z

10

Preliminary Interpretation of a Radionuclide and Colloid Tracer Test in a Granodiorite Shear Zone at the Grimsel Test Site, Switzerland  

SciTech Connect (OSTI)

In February and March 2012, a tracer test involving the injection of a radionuclide-colloid cocktail was conducted in the MI shear zone at the Grimsel Test Site, Switzerland, as part of the Colloids Formation and Migration (CFM) project. The colloids were derived from FEBEX bentonite, which is mined in Spain and is being considered as a potential waste package backfill in a Spanish nuclear waste repository. The tracer test, designated test 12-02 (second test in 2012), involved the injection of the tracer cocktail into borehole CFM 06.002i2 and extraction from the Pinkel surface packer at the main access tunnel wall approximately 6.1 m from the injection interval. The test configuration is depicted in Figure 1. This configuration has been used in several conservative tracer tests and two colloid-homologue tracer tests since 2007, and it is will be employed in an upcoming test involving the emplacement of a radionuclide-doped bentonite plug into CFM 06.002i2 to evaluate the swelling and erosion of the bentonite and the transport of bentonite colloids and radionuclides from the source to the extraction point at the tunnel wall. Interpretive analyses of several of the previous tracer tests, from 09-01 through 12-02 were provided in two previous Used Fuel Disposition Program milestone reports (Arnold et al., 2011; Kersting et al., 2012). However, only the data for the conservative tracer Amino-G Acid was previously analyzed from test 12-02 because the other tracer data from this test were not available at the time. This report documents the first attempt to quantitatively analyze the radionuclide and colloid breakthrough curves from CFM test 12-02. This report was originally intended to also include an experimental assessment of colloid-facilitated transport of uranium by bentonite colloids in the Grimsel system, but this assessment was not conducted because it was reported by German collaborators at the Karlsruhe Institute of Technology (KIT) that neither uranium nor neptunium adsorbed appreciably to FEBEX bentonite colloids in Grimsel groundwater (Huber et al., 2011). The Grimsel groundwater has a relatively high pH of {approx}9, so the lack of uranium and neptunium adsorption to clay is not surprising given the tendency for these actinides to form very stable negative or neutrally-charged uranyl- or calcium-uranyl-carbonate complexes at these pH, particularly in a water that is effectively saturated with respect to calcite. It was also observed in testing conducted at LANL earlier in 2012 that uranium did not adsorb measurably to Grimsel granodiorite in a synthetic Grimsel groundwater at pH {approx}8.5 (Kersting et al., 2012). Thus, the planned experimental work was not pursued because all the available information clearly pointed to an expected result that uranium transport would not be facilitated by clay colloids in the Grimsel system.

Reimus, Paul W. [Los Alamos National Laboratory

2012-08-30T23:59:59.000Z

11

Interpreting Energy and Tracer Spectra of Upper-Ocean Turbulence in the Submesoscale Range (1Ė200 km)  

E-Print Network [OSTI]

Submesoscale (1Ė200 km) wavenumber spectra of kinetic and potential energy and tracer variance are obtained from in situ observations in the Gulf Stream region and in the eastern subtropical North Pacific. In the Gulf ...

Ferrari, Raffaele

12

Core follow calculation with the nTRACER numerical reactor and verification using power reactor measurement data  

SciTech Connect (OSTI)

The nTRACER direct whole core transport code employing the planar MOC solution based 3-D calculation method, the subgroup method for resonance treatment, the Krylov matrix exponential method for depletion, and a subchannel thermal/hydraulic calculation solver was developed for practical high-fidelity simulation of power reactors. Its accuracy and performance is verified by comparing with the measurement data obtained for three pressurized water reactor cores. It is demonstrated that accurate and detailed multi-physic simulation of power reactors is practically realizable without any prior calculations or adjustments. (authors)

Jung, Y. S.; Joo, H. G. [Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul (Korea, Republic of); Yoon, J. I. [KEPCO Nuclear Fuel, 1047 Daedukdae-ro, Yuseong-gu, Daejeon (Korea, Republic of)

2013-07-01T23:59:59.000Z

13

Tracers and Tracer Interpretation | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,LtdInformation Dixie Valley Geothermal Area (Reed, 2007)testing

14

PROOF OF CONCEPT TEST OF A UNIQUE GASEOUS PERFLUROCARBON TRACER SYSTEM FOR VERIFICATION AND LONG TERM MONITORING OF CAPS AND COVER SYSTEMS CONDUCTED AT THE SAVANNAH RIVER SITE BENTONITE MAT TEST FACILITY.  

SciTech Connect (OSTI)

Engineered covers have been placed on top of buried/subsurface wastes to minimize water infiltration and therefore, release of hazardous contaminants. In order for the cover to protect the environment it must remain free of holes and breaches throughout its service life. Covers are subject to subsidence, erosion, animal intrusion, plant root infiltration, etc., all of which will affect the overall performance of the cover. The U.S. Department of Energy Environmental Management (DOE-EM) Program 2006 Accelerated Cleanup Plan is pushing for rapid closure of many of the DOE facilities. This will require a great number of new cover systems. Some of these new covers are expected to maintain their performance for periods of up to 1000 years. Long-term stewardship will require monitoring/verification of cover performance over the course of the designed lifetime. In addition, many existing covers are approaching the end of their design life and will need validation of current performance (if continued use is desired) or replacement (if degraded). The need for a reliable method of verification and long-term monitoring is readily apparent. Currently, failure is detected through monitoring wells downstream of the waste site. This is too late as the contaminants have already left the disposal area. The proposed approach is the use of gaseous Perfluorocarbon tracers (PFT) to verify and monitor cover performance. It is believed that PFTs will provide a technology that can verify a cover meets all performance objectives upon installation, be capable of predicting changes in cover performance and failure (defined as contaminants leaving the site) before it happens, and be cost-effective in supporting stewardship needs. The PFTs are injected beneath the cover and air samples taken above (either air samples or soil gas samples) at the top of the cover. The location, concentrations, and time of arrival of the tracer(s) provide a direct measure of cover performance. PFT technology can be used as a non-invasive method (if injection ports are emplaced prior to cover emplacement) on new covers or a minimally invasive method on existing covers. PFT verification will be useful at all buried waste sites using a cover system (e.g., treated or untreated chemical waste landfills) including DOE, commercial, and private sector sites. This paper discusses the initial field trial of the PFT cover monitoring system performed at the Savannah River Site (SRS) in FY01. The experiments provided a successful proof-of-principle test of the PFT technology in monitoring caps and covers. An injection and sampling array was installed in the Bentomat test cap at the SRS Caps Test Facility. This system contained 6 feet of sandy soil beneath a 1/2 inch geosynthetic clay liner covered by an HDPE liner which was covered by 2 feet of clayey top soil. PFTs were injected into the sandy soil though a pre-existing system of access pipes below the cap and soil gas samples were taken on top of the cap. Mid-way into the injection period a series of 1 1/2 inch holes were punched into the cap (through the geomembrane) to provide a positive breach in the cap. Data will be presented that shows the initial cap was fairly tight and leak free and that the artificially induced leaks were detectable within two hours of occurrence.

HEISER,J.; SULLIVAN,T.; SERRATO,M.

2002-02-24T23:59:59.000Z

15

Time-scales of passive tracers in the ocean with paleoapplications  

E-Print Network [OSTI]

Quantifying time-responses of the ocean to passive and active tracers is critical when interpreting paleodata from sediment cores. Surface-injected tracers are not spreading instantaneously or uniformly throughout the ...

Siberlin, Charlotte

2010-01-01T23:59:59.000Z

16

Novel Multi-dimensional Tracers for Geothermal Inter-wall Diagnostics  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. The objective of this project is to develop a matrix of the smart geothermal tracer and its interpretation tools.

17

Biological tracer method  

DOE Patents [OSTI]

The present invention is a biological tracer method for characterizing the movement of a material through a medium, comprising the steps of: introducing a biological tracer comprising a microorganism having ice nucleating activity into a medium; collecting at least one sample of the medium from a point removed from the introduction point; and analyzing the sample for the presence of the biological tracer. The present invention is also a method for using a biological tracer as a label for material identification by introducing a biological tracer having ice nucleating activity into a material, collecting a sample of a portion of the labelled material and analyzing the sample for the presence of the biological tracer. 2 figs.

Strong-Gunderson, J.M.; Palumbo, A.V.

1998-09-15T23:59:59.000Z

18

Biological tracer method  

DOE Patents [OSTI]

The present invention is a biological tracer method for characterizing the movement of a material through a medium, comprising the steps of: introducing a biological tracer comprising a microorganism having ice nucleating activity into a medium; collecting at least one sample of the medium from a point removed from the introduction point; and analyzing the sample for the presence of the biological tracer. The present invention is also a method for using a biological tracer as a label for material identification by introducing a biological tracer having ice nucleating activity into a material, collecting a sample of a portion of the labelled material and analyzing the sample for the presence of the biological tracer.

Strong-Gunderson, Janet M. (Ten Mile, TN); Palumbo, Anthony V. (Oak Ridge, TN)

1998-01-01T23:59:59.000Z

19

Using Thermally-Degrading, Partitioning, and Nonreactive Tracers to Determine Temperature Distribution and Fracture/Heat Transfer Surface Area in Geothermal Reservoirs  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Project Summary. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate quantitative characterization of temperature distributions and surface area available for heat transfer in EGS.

20

Development of Models to Simulate Tracer Tests for Characterization of Enhanced Geothermal Systems  

SciTech Connect (OSTI)

A recent report found that power and heat produced from enhanced (or engineered) geothermal systems (EGSs) could have a major impact on the U.S energy production capability while having a minimal impact on the environment. EGS resources differ from high-grade hydrothermal resources in that they lack sufficient temperature distribution, permeability/porosity, fluid saturation, or recharge of reservoir fluids. Therefore, quantitative characterization of temperature distributions and the surface area available for heat transfer in EGS is necessary for the design and commercial development of the geothermal energy of a potential EGS site. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate this characterization. This project was initially focused on tracer development with the application of perfluorinated tracer (PFT) compounds, non-reactive tracers used in numerous applications from atmospheric transport to underground leak detection, to geothermal systems, and evaluation of encapsulated PFTs that would release tracers at targeted reservoir temperatures. After the 2011 midyear review and subsequent discussions with the U.S. Department of Energy Geothermal Technology Program (GTP), emphasis was shifted to interpretive tool development, testing, and validation. Subsurface modeling capabilities are an important component of this project for both the design of suitable tracers and the interpretation of data from in situ tracer tests, be they single- or multi-well tests. The purpose of this report is to describe the results of the tracer and model development for simulating and conducting tracer tests for characterizing EGS parameters.

Williams, Mark D.; Reimus, Paul; Vermeul, Vincent R.; Rose, Peter; Dean, Cynthia A.; Watson, Tom B.; Newell, D.; Leecaster, Kevin; Brauser, Eric

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Verification of Geothermal Tracer Methods in Highly Constrained Field  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov PtyInformation UCOpen EnergyVelankani Group JumpVerdiem Jump

22

ANALYSIS OF TRACER AND THERMAL TRANSIENTS DURING REINJECTION  

E-Print Network [OSTI]

and developed a new technique which combines the results from in- terwell tracer tests and thermal injection variables of the injection and backflow periods. Finally we suggested thermal injection-backflow tests for interpreting thermal injection-backflow tests. In fact, the MD model was first developed by Lauwerier to study

Stanford University

23

AN INTEGRATED APPROACH TO CHARACTERIZING BYPASSED OIL IN HETEROGENEOUS AND FRACTURED RESERVOIRS USING PARTITIONING TRACERS  

SciTech Connect (OSTI)

We explore the use of efficient streamline-based simulation approaches for modeling partitioning interwell tracer tests in hydrocarbon reservoirs. Specifically, we utilize the unique features of streamline models to develop an efficient approach for interpretation and history matching of field tracer response. A critical aspect here is the underdetermined and highly ill-posed nature of the associated inverse problems. We have adopted an integrated approach whereby we combine data from multiple sources to minimize the uncertainty and non-uniqueness in the interpreted results. For partitioning interwell tracer tests, these are primarily the distribution of reservoir permeability and oil saturation distribution. A novel approach to multiscale data integration using Markov Random Fields (MRF) has been developed to integrate static data sources from the reservoir such as core, well log and 3-D seismic data. We have also explored the use of a finite difference reservoir simulator, UTCHEM, for field-scale design and optimization of partitioning interwell tracer tests. The finite-difference model allows us to include detailed physics associated with reactive tracer transport, particularly those related with transverse and cross-streamline mechanisms. We have investigated the potential use of downhole tracer samplers and also the use of natural tracers for the design of partitioning tracer tests. Finally, the behavior of partitioning tracer tests in fractured reservoirs is investigated using a dual-porosity finite-difference model.

Akhil Datta-Gupta

2003-08-01T23:59:59.000Z

24

Innovative techniques for the description of reservoir heterogeneity using tracers. Second technical annual progress report, October 1991--September 1992  

SciTech Connect (OSTI)

This second annual report on innovative uses of tracers for reservoir characterization contains four sections each describing a novel use of oilfield tracers. The first section describes and illustrates the use of a new single-well tracer test to estimate wettability. This test consists of the injection of brine containing tracers followed by oil containing tracers, a shut-in period to allow some of the tracers to react, and then production of the tracers. The inclusion of the oil injection slug with tracers is unique to this test, and this is what makes the test work. We adapted our chemical simulator, UTCHEM, to enable us to study this tracer method and made an extensive simulation study to evaluate the effects of wettability based upon characteristic curves for relative permeability and capillary pressure for differing wetting states typical of oil reservoirs. The second section of this report describes a new method for analyzing interwell tracer data based upon a type-curve approach. Theoretical frequency response functions were used to build type curves of ``transfer function`` and ``phase spectrum`` that have dimensionless heterogeneity index as a parameter to characterize a stochastic permeability field. We illustrate this method by analyzing field tracer data. The third section of this report describes a new theory for interpreting interwell tracer data in terms of channeling and dispersive behavior for reservoirs. Once again, a stochastic approach to reservoir description is taken. The fourth section of this report describes our simulation of perfluorocarbon gas tracers. This new tracer technology developed at Brookhaven National Laboratory is being tested at the Elk Hills Naval Petroleum Reserve No. 1 in California. We report preliminary simulations made of these tracers in one of the oil reservoirs under evaluation with these tracers in this field. Our compostional simulator (UTCOMP) was used for this simulation study.

Pope, G.A.; Sepehrnoori, K.

1992-12-31T23:59:59.000Z

25

Tracer airflow measurement system (TRAMS)  

DOE Patents [OSTI]

A method and apparatus for measuring fluid flow in a duct is disclosed. The invention uses a novel high velocity tracer injector system, an optional insertable folding mixing fan for homogenizing the tracer within the duct bulk fluid flow, and a perforated hose sampling system. A preferred embodiment uses CO.sub.2 as a tracer gas for measuring air flow in commercial and/or residential ducts. In extant commercial buildings, ducts not readily accessible by hanging ceilings may be drilled with readily plugged small diameter holes to allow for injection, optional mixing where desired using a novel insertable foldable mixing fan, and sampling hose.

Wang, Duo (Albany, CA)

2007-04-24T23:59:59.000Z

26

Verification and Validation  

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

include modeling simulation (which is a form of Test, Demonstration, and Analysis). INL system engineers specialize in helping projects through the Verification and Validation...

27

Integrated Approach to Use Natural Chemical and Isotopic Tracers to Estimate Fracture Spacing and Surface Area in EGS Systems  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. This objective of this project is to develop an innovative approach to estimate fracture surface area and spacing through interpretation of signals of natural chemical and isotopic tracers.

28

Treaty Verification | ornl.gov  

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

Verification SHARE Treaty Verification ORNL is a strong contributor to future nonproliferation and arms control initiatives through research and development of radiation...

29

Orc Verification Jayadev Misra  

E-Print Network [OSTI]

Orc Verification Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu WG 2.3, St. Petersburg June 5, 2013 #12;Orc Verification has been a disaster · Concurrency everywhere events but temporal ordering · Basic orc has no mutable variables, but sites do · Full functional

Misra, Jayadev

30

Verification Testing Test Driven Development Testing with JUnit Verification  

E-Print Network [OSTI]

Verification Testing Test Driven Development Testing with JUnit Verification Any activity should be verified. #12;Verification Testing Test Driven Development Testing with JUnit Approaches to verification 1 Testing 2 Static Analysis · Peer review · Insepction/Walk-through/Structured review · Formal

Peters, Dennis

31

Diagnostic Implications of the Reactivity of Fluorescence Tracers  

SciTech Connect (OSTI)

Measurements of fuel concentration distributions with planar laser induced fluorescence of tracer molecules that are added to a base fuel are commonly used in combustion research and development. It usually is assumed that the tracer concentration follows the parent fuel concentration if physical properties such as those determining evaporation are matched. As an example to address this general issue a computational study of combustion of biacetyl/iso-octane mixtures was performed to investigate how well the concentration of biacetyl represents the concentration of iso-octane. For premixed mixture conditions with flame propagation the spatial concentration profiles of the two species in the flame front are separated by 110 {micro}m at 1 bar and by 11 {micro}m at 10 bar. For practical applications this spatial separation is insignificantly small. However, for conditions that mimic ignition and combustion in diesel and HCCI-like operation the differences in tracer and fuel concentration can be significant, exceeding hundreds of percent. At low initial temperature biacetyl was found to be more stable whereas at higher temperature (>1000K) iso-octane is more stable. Similar findings were obtained for a multi-component fuel comprised of iso-octane, n-heptane, methylcyclohexane, and toluene. It may be assumed that similar differences can exist for other tracer/fuel combinations. Caution has therefore to be applied when interpreting PLIF measurements in homogeneous reaction conditions such as in HCCI engine studies.

Sick, V; Westbrook, C

2008-07-14T23:59:59.000Z

32

University of Massachusetts Amherst Measurement & Verification Guidelines  

E-Print Network [OSTI]

University of Massachusetts Amherst Measurement & Verification Guidelines & Template Plan 11 ..............................................................................................................1 UMASS AMHERST MEASUREMENT & VERIFICATION (M&V) GUIDELINES ..........3 PREFACE ....................................................................................................................................................................3 BENEFITS OF MEASUREMENT & VERIFICATION

Massachusetts at Amherst, University of

33

Carbon Storage Monitoring, Verification and Accounting Research...  

Energy Savers [EERE]

Monitoring, Verification and Accounting Research Carbon Storage Monitoring, Verification and Accounting Research Reliable and cost-effective monitoring, verification and accounting...

34

Verification and Validation of Simulation Model  

E-Print Network [OSTI]

Verification and Validation of Simulation Model 1 Verification and Validation 2 #12;Verification · Examples ­ simulation model: open networks with exponential interarrival time distribution and uniform

Shihada, Basem

35

Voltage verification unit  

DOE Patents [OSTI]

A voltage verification unit and method for determining the absence of potentially dangerous potentials within a power supply enclosure without Mode 2 work is disclosed. With this device and method, a qualified worker, following a relatively simple protocol that involves a function test (hot, cold, hot) of the voltage verification unit before Lock Out/Tag Out and, and once the Lock Out/Tag Out is completed, testing or "trying" by simply reading a display on the voltage verification unit can be accomplished without exposure of the operator to the interior of the voltage supply enclosure. According to a preferred embodiment, the voltage verification unit includes test leads to allow diagnostics with other meters, without the necessity of accessing potentially dangerous bus bars or the like.

Martin, Edward J. (Virginia Beach, VA)

2008-01-15T23:59:59.000Z

36

Tracer Methods for Characterizing Fracture Stimulation in Engineered...  

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

Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal Systems (EGS) Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal...

37

Development of Models to Simulate Tracer Behavior in Enhanced Geothermal Systems  

SciTech Connect (OSTI)

A recent report found that power and heat produced from engineered (or enhanced) geothermal systems (EGSs) could have a major impact on the United States while incurring minimal environmental impacts. EGS resources differ from high-grade hydrothermal resources in that they lack sufficient temperature distributions, permeability/porosity, fluid saturation, or recharge of reservoir fluids. Therefore, quantitative characterization of temperature distributions and the surface area available for heat transfer in EGS is necessary for commercial development of geothermal energy. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate this characterization. Modeling capabilities are being developed as part of this project to support laboratory and field testing to characterize engineered geothermal systems in single- and multi-well tests using tracers. The objective of this report is to describe the simulation plan and the status of model development for simulating tracer tests for characterizing EGS.

Williams, Mark D.; Vermeul, Vincent R.; Reimus, P. W.; Newell, D.; Watson, Tom B.

2010-06-01T23:59:59.000Z

38

Environmental Technology Verification of Mobile Sources Control...  

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

Environmental Technology Verification of Mobile Sources Control Technologies Environmental Technology Verification of Mobile Sources Control Technologies 2005 Diesel Engine...

39

SOFTWARE TESTING, VERIFICATION AND RELIABILITY Softw. Test. Verif. Reliab. (2014)  

E-Print Network [OSTI]

. An industrial case study using reactor protection system software shows that the automatically generated test defined by the International Electrotechnical Commission (IEC). Industrial FBD testing relies mostlySOFTWARE TESTING, VERIFICATION AND RELIABILITY Softw. Test. Verif. Reliab. (2014) Published online

40

Multiple-tracer gas analyzer  

SciTech Connect (OSTI)

A multi-gas tracer system has been designed, built, and used on an explosively fractured oil shale rubble bed. This paper deals exclusively with the hardware, software, and overall operation of the tracer system. This system is a field portable, self-contained unit, which utilizes a mass spectrometer for gas analysis. The unit has a 20 channel sample port capability and is controlled by a desk top computer. The system is configured to provide a dynamic sensitivity range of up to six orders of magnitude. A roots blower is manifolded to the unit to provide continuous flow in all sample lines. The continuous flow process allows representative samples as well as decreasing the time between each measurement. Typical multiplex cycle time to evaluate four unique gases is approximately 12 seconds.

Uhl, J.E.

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Electric Utility Measurement & Verification Program  

E-Print Network [OSTI]

Electric Utility Measurement & Verification Program Ken Lau, P.Eng., CMVP Graham Henderson, P.Eng., CMVP Dan Hebert, P.Eng.,CMVP Mgr, Measurement & Verification Engineering Team Leader Senior Engineer BC Hydro Burnaby, BC Canada...

Lau, K.; Henderson, G.; Hebert, D.

42

Quantum Money with Classical Verification  

E-Print Network [OSTI]

We construct a quantum money scheme that allows verification through classical communication with bank. This is the first demonstration that a secure quantum money scheme exists that does not require quantum communication for coin verification.

Gavinsky, Dmitry

2011-01-01T23:59:59.000Z

43

Nuclear disarmament verification  

SciTech Connect (OSTI)

Arms control treaties, unilateral actions, and cooperative activities -- reflecting the defusing of East-West tensions -- are causing nuclear weapons to be disarmed and dismantled worldwide. In order to provide for future reductions and to build confidence in the permanency of this disarmament, verification procedures and technologies would play an important role. This paper outlines arms-control objectives, treaty organization, and actions that could be undertaken. For the purposes of this Workshop on Verification, nuclear disarmament has been divided into five topical subareas: Converting nuclear-weapons production complexes, Eliminating and monitoring nuclear-weapons delivery systems, Disabling and destroying nuclear warheads, Demilitarizing or non-military utilization of special nuclear materials, and Inhibiting nuclear arms in non-nuclear-weapons states. This paper concludes with an overview of potential methods for verification.

DeVolpi, A.

1993-12-31T23:59:59.000Z

44

Verification and validation benchmarks.  

SciTech Connect (OSTI)

Verification and validation (V&V) are the primary means to assess the accuracy and reliability of computational simulations. V&V methods and procedures have fundamentally improved the credibility of simulations in several high-consequence fields, such as nuclear reactor safety, underground nuclear waste storage, and nuclear weapon safety. Although the terminology is not uniform across engineering disciplines, code verification deals with assessing the reliability of the software coding, and solution verification deals with assessing the numerical accuracy of the solution to a computational model. Validation addresses the physics modeling accuracy of a computational simulation by comparing the computational results with experimental data. Code verification benchmarks and validation benchmarks have been constructed for a number of years in every field of computational simulation. However, no comprehensive guidelines have been proposed for the construction and use of V&V benchmarks. For example, the field of nuclear reactor safety has not focused on code verification benchmarks, but it has placed great emphasis on developing validation benchmarks. Many of these validation benchmarks are closely related to the operations of actual reactors at near-safety-critical conditions, as opposed to being more fundamental-physics benchmarks. This paper presents recommendations for the effective design and use of code verification benchmarks based on manufactured solutions, classical analytical solutions, and highly accurate numerical solutions. In addition, this paper presents recommendations for the design and use of validation benchmarks, highlighting the careful design of building-block experiments, the estimation of experimental measurement uncertainty for both inputs and outputs to the code, validation metrics, and the role of model calibration in validation. It is argued that the understanding of predictive capability of a computational model is built on the level of achievement in V&V activities, how closely related the V&V benchmarks are to the actual application of interest, and the quantification of uncertainties related to the application of interest.

Oberkampf, William Louis; Trucano, Timothy Guy

2007-02-01T23:59:59.000Z

45

A Tracer Test Using Ethanol as a Two-Phase Tracer and 2-Naphthalene...  

Open Energy Info (EERE)

Test Using Ethanol as a Two-Phase Tracer and 2-Naphthalene Sulfonate as a Liquid-Phase Tracer at the Coso Geothermal Field Jump to: navigation, search OpenEI Reference LibraryAdd...

46

Environmental Technology Verification Program  

E-Print Network [OSTI]

Environmental Technology Verification Program Quality Management Plan (QMP) for the ETV Materials Management and Remediation Center Version 1.0 #12;QUALITY MANAGEMENT PLAN (QMP) for the ETV MATERIALS MANAGEMENT AND REMEDIATION CENTER Version 1.0 (SIGNATURE ON FILE) Teri Richardson 3-13-09 EPA MMR CENTER

47

Transforming Abstract Interpretations by Abstract Interpretation  

E-Print Network [OSTI]

an instance of the same abstract interpretation frame- work lifted to higher types, i.e. where the objectsTransforming Abstract Interpretations by Abstract Interpretation New Challenges in Language - Verona, Italy (roberto.giacobazzi|isabella.mastroeni)@univr.it Abstract. In this paper we exploit

Giacobazzi, Roberto

48

Visual inspection for CTBT verification  

SciTech Connect (OSTI)

On-site visual inspection will play an essential role in future Comprehensive Test Ban Treaty (CTBT) verification. Although seismic and remote sensing techniques are the best understood and most developed methods for detection of evasive testing of nuclear weapons, visual inspection can greatly augment the certainty and detail of understanding provided by these more traditional methods. Not only can visual inspection offer ``ground truth`` in cases of suspected nuclear testing, but it also can provide accurate source location and testing media properties necessary for detailed analysis of seismic records. For testing in violation of the CTBT, an offending party may attempt to conceal the test, which most likely will be achieved by underground burial. While such concealment may not prevent seismic detection, evidence of test deployment, location, and yield can be disguised. In this light, if a suspicious event is detected by seismic or other remote methods, visual inspection of the event area is necessary to document any evidence that might support a claim of nuclear testing and provide data needed to further interpret seismic records and guide further investigations. However, the methods for visual inspection are not widely known nor appreciated, and experience is presently limited. Visual inspection can be achieved by simple, non-intrusive means, primarily geological in nature, and it is the purpose of this report to describe the considerations, procedures, and equipment required to field such an inspection.

Hawkins, W.; Wohletz, K.

1997-03-01T23:59:59.000Z

49

Quantum Money with Classical Verification  

E-Print Network [OSTI]

We propose and construct a quantum money scheme that allows verification through classical communication with a bank. This is the first demonstration that a secure quantum money scheme exists that does not require quantum communication for coin verification. Our scheme is secure against adaptive adversaries - this property is not directly related to the possibility of classical verification, nevertheless none of the earlier quantum money constructions is known to possess it.

Dmitry Gavinsky

2012-03-15T23:59:59.000Z

50

Tracer Methods for Characterizing Fracture Creation in Enhanced...  

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

Tracer Methods for Characterizing Fracture Creation in Enhanced Geothermal Systems; 2010 Geothermal Technology Program Peer Review Report Tracer Methods for Characterizing Fracture...

51

Tracer Methods for Characterizing Fracture Stimulation in Enhanced...  

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

Tracer Methods for Characterizing Fracture Stimulation in Enhanced Geothermal Systems (EGS); 2010 Geothermal Technology Program Peer Review Report Tracer Methods for Characterizing...

52

Validation of Geothermal Tracer Methods in Highly Constrained...  

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

of Research Hypothesis: Smart tracers can measure potential heat exchange between fracture and rock mass Hypothesis Test: A tracer test proving ground System must be simple...

53

Advancing reactive tracer methods for measuring thermal evolution...  

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

Partitioning, and Nonreactive Tracers to Determine Temperature Distribution and FractureHeat Transfer Surface Area in Geothermal Reservoirs Quantum Dot Tracers for Use in...

54

Assessment of Evaluation, Measurement, and Verification Methods...  

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

Assessment of Evaluation, Measurement, and Verification Methods - 2014 BTO Peer Review Assessment of Evaluation, Measurement, and Verification Methods - 2014 BTO Peer Review...

55

Benefits of Evaluation, Measurement, and Verification | Department...  

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

Benefits of Evaluation, Measurement, and Verification Benefits of Evaluation, Measurement, and Verification This document provides information about the benefits of performing...

56

Evaluation, Measurement, and Verification Overview | Department...  

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

Evaluation, Measurement, and Verification Overview Evaluation, Measurement, and Verification Overview This document provides an overview and definition of EM&V. What is EMV? More...

57

Using Biofuel Tracers to Study Alternative Combustion Regimes  

E-Print Network [OSTI]

Section B (NIMB) Using Biofuel Tracers to Study Alternativeinjection. We investigate biofuel HCCI combustion, and use

Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W.

2006-01-01T23:59:59.000Z

58

TFE Verification Program  

SciTech Connect (OSTI)

The objective of the semiannual progress report is to summarize the technical results obtained during the latest reporting period. The information presented herein will include evaluated test data, design evaluations, the results of analyses and the significance of results. The program objective is to demonstrate the technology readiness of a TFE (thermionic fuel element) suitable for use as the basic element in a thermionic reactor with electric power output in the 0.5 to 5.0 MW(e) range, and a full-power life of 7 years. The TFE Verification Program builds directly on the technology and data base developed in the 1960s and early 1970s in an AEC/NASA program, and in the SP-100 program conducted in 1983, 1984 and 1985. In the SP-100 program, the attractive features of thermionic power conversion technology were recognized but concern was expressed over the lack of fast reactor irradiation data. The TFE Verification Program addresses this concern.

Not Available

1993-05-01T23:59:59.000Z

59

Learning Minimal Separating DFA's for Compositional Verification  

E-Print Network [OSTI]

version is evaluated on the LTSA benchmarks and compared with other automated com- positional verification

Clarke, Edmund M.

60

Data Acquisition Interpretation  

E-Print Network [OSTI]

Data Acquisition Inversion Interpretation Discussion Virgin River DCIP Report Justin Granek1 1 Report #12;Data Acquisition Inversion Interpretation Discussion Outline 1 Data Acquisition Location Survey Specications 2 Inversion Data Errors DCIP2D DCIP3D 3 Interpretation Correlations Snowbird Tectonic

Oldenburg, Douglas W.

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Thermal Stability of Chelated Indium Activable Tracers  

SciTech Connect (OSTI)

The thermal stability of indium tracer chelated with organic ligands ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) was measured for reservoir temperatures of 150, 200, and 240 C. Measurements of the soluble indium concentration was made as a function of time by neutron activation analysis. From the data, approximate thermal decomposition rates were estimated. At 150 C, both chelated tracers were stable over the experimental period of 20 days. At 200 C, the InEDTA concentration remained constant for 16 days, after which the thermal decomposition occurred at a measured rate constant of k = 0.09 d{sup -1}. The thermal decomposition of InNTA at 200 C showed a first order reaction with a measured rate constant of k = 0.16 d{sup -1}. At 240 C, both indium chelated tracers showed rapid decomposition with rate constants greater than 1.8 d{sup -1}. The data indicate that for geothermal reservoir with temperatures up to about 200 C, indium chelated tracers can be used effectively for transit times of at least 20 days. These experiments were run without reservoir rock media, and do not account for concomitant loss of indium tracer by adsorption processes.

Chrysikopoulos, Costas; Kruger, Paul

1986-01-21T23:59:59.000Z

62

Software Modeling and Verification Professors  

E-Print Network [OSTI]

Software Modeling and Verification Staff · Professors Prof. Dr. Ir. Joost-Pieter Katoen Prof. em) Mark Timmer (Uni Twente, NL) Dr. Olga Tveretina (Karlsruhe University, D) Ralf Wimmer (Universität

√Ābrah√°m, Erika

63

Enhanced Oil Recovery: Aqueous Flow Tracer Measurement  

SciTech Connect (OSTI)

A low detection limit analytical method was developed to measure a suite of benzoic acid and fluorinated benzoic acid compounds intended for use as tracers for enhanced oil recovery operations. Although the new high performance liquid chromatography separation successfully measured the tracers in an aqueous matrix at low part per billion levels, the low detection limits could not be achieved in oil field water due to interference problems with the hydrocarbon-saturated water using the system's UV detector. Commercial instrument vendors were contacted in an effort to determine if mass spectrometry could be used as an alternate detection technique. The results of their work demonstrate that low part per billion analysis of the tracer compounds in oil field water could be achieved using ultra performance liquid chromatography mass spectrometry.

Joseph Rovani; John Schabron

2009-02-01T23:59:59.000Z

64

E-Print Network 3.0 - atmospheric tracer experiments Sample Search...  

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

Collection: Geosciences 11 The University of Reading Helen Dacre Evaluating pollution transport in Summary: study Tracer experiments NAME tracer analysis UM tracer...

65

Method of dispersing particulate aerosol tracer  

DOE Patents [OSTI]

A particulate aerosol tracer which comprises a particulate carrier of sheet silicate composition having a particle size up to one micron, and a cationic dopant chemically absorbed in solid solution in the carrier. The carrier is preferably selected from the group consisting of natural mineral clays such as bentonite, and the dopant is selected from the group consisting of rare earth elements and transition elements. The tracers are dispersed by forming an aqueous salt solution with the dopant present as cations, dispersing the carriers in the solution, and then atomizing the solution under heat sufficient to superheat the solution droplets at a level sufficient to prevent reagglomeration of the carrier particles.

O'Holleran, Thomas P. (Belleville, MI)

1988-01-01T23:59:59.000Z

66

Geologic flow characterization using tracer techniques  

SciTech Connect (OSTI)

A new tracer flow-test system has been developed for in situ characterization of geologic formations. This report describes two sets of test equipment: one portable and one for testing in deep formations. Equations are derived for in situ detector calibration, raw data reduction, and flow logging. Data analysis techniques are presented for computing porosity and permeability in unconfined isotropic media, and porosity, permeability and fracture characteristics in media with confined or unconfined two-dimensional flow. The effects of tracer pulse spreading due to divergence, dispersion, and porous formations are also included.

Klett, R. D.; Tyner, C. E.; Hertel, Jr., E. S.

1981-04-01T23:59:59.000Z

67

An Integrated Approach to Characterizing Bypassed Oil in Heterogeneous and Fractured Reservoirs Using Partitioning Tracers  

SciTech Connect (OSTI)

We explore the use of efficient streamline-based simulation approaches for modeling partitioning interwell tracer tests in hydrocarbon reservoirs. Specifically, we utilize the unique features of streamline models to develop an efficient approach for interpretation and history matching of field tracer response. A critical aspect here is the underdetermined and highly ill-posed nature of the associated inverse problems. We have investigated the relative merits of the traditional history matching ('amplitude inversion') and a novel travel time inversion in terms of robustness of the method and convergence behavior of the solution. We show that the traditional amplitude inversion is orders of magnitude more non-linear and the solution here is likely to get trapped in local minimum, leading to inadequate history match. The proposed travel time inversion is shown to be extremely efficient and robust for practical field applications. The streamline approach is generalized to model water injection in naturally fractured reservoirs through the use of a dual media approach. The fractures and matrix are treated as separate continua that are connected through a transfer function, as in conventional finite difference simulators for modeling fractured systems. A detailed comparison with a commercial finite difference simulator shows very good agreement. Furthermore, an examination of the scaling behavior of the computation time indicates that the streamline approach is likely to result in significant savings for large-scale field applications. We also propose a novel approach to history matching finite-difference models that combines the advantage of the streamline models with the versatility of finite-difference simulation. In our approach, we utilize the streamline-derived sensitivities to facilitate history matching during finite-difference simulation. The use of finite-difference model allows us to account for detailed process physics and compressibility effects. The approach is very fast and avoids much of the subjective judgments and time-consuming trial-and-errors associated with manual history matching. We demonstrate the power and utility of our approach using a synthetic example and two field examples. We have also explored the use of a finite difference reservoir simulator, UTCHEM, for field-scale design and optimization of partitioning interwell tracer tests. The finite-difference model allows us to include detailed physics associated with reactive tracer transport, particularly those related with transverse and cross-streamline mechanisms. We have investigated the potential use of downhole tracer samplers and also the use of natural tracers for the design of partitioning tracer tests. Finally, we discuss several alternative ways of using partitioning interwell tracer tests (PITTs) in oil fields for the calculation of oil saturation, swept pore volume and sweep efficiency, and assess the accuracy of such tests under a variety of reservoir conditions.

Akhil Datta-Gupta

2006-12-31T23:59:59.000Z

68

Chelated Indium Activable Tracers for Geothermal Reservoirs  

E-Print Network [OSTI]

Center (SLAC), for providing the califclmiurh-252 neutron source. Appreciation is extended to Lew, rock size, and temperature on the tracer adsoqjtion and ther- mal degradation. The rock employed for these measurements was gragwacke, a prek valent rock type at The Geysers, California geothermal field. The re

Stanford University

69

Validation of Geothermal Tracer Methods in Highly Constrained Field Experiments  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Project Summary. This project will test smartdiffusive tracers for measuring heat exchange.

70

Generation of RTL verification input stimulus  

E-Print Network [OSTI]

This thesis presents an approach for generating input stimulus for verification of register-transfer level (RTL) design of VLSI circuits. RTL design is often subjected to a significant verification effort due to errors introduced during manual...

Selvarathinam, Anand Manivannan

2001-01-01T23:59:59.000Z

71

Interpretation, Analysis and Design of Inter-well Tracer Tests in Naturally Fractured Reservoirs  

E-Print Network [OSTI]

of normalized net swept volumes (Sherrod 1012) ............... 69 Figure 4.8 Distribution of normalized net swept volumes (Sherrod 2118) ............... 69 Figure 4.9 Distribution of normalized net swept volumes (Sherrod 2325) ............... 70 Figure 4... for ?Sherrod 701? ................................ 74 Figure 4.19 Normalized swept volume map for ?Sherrod 1301? ............................... 75 Figure 4.20 Normalized swept volume map for ?Sherrod 1012? .............................. 75 Figure 4...

Alramadhan, Aymen Abduljalil

2013-08-19T23:59:59.000Z

72

Advancing Reactive Tracer Methods for Measurement of Thermal Evolution in Geothermal Reservoirs: Final Report  

SciTech Connect (OSTI)

The injection of cold fluids into engineered geothermal system (EGS) and conventional geothermal reservoirs may be done to help extract heat from the subsurface or to maintain pressures within the reservoir (e.g., Rose et al., 2001). As these injected fluids move along fractures, they acquire heat from the rock matrix and remove it from the reservoir as they are extracted to the surface. A consequence of such injection is the migration of a cold-fluid front through the reservoir (Figure 1) that could eventually reach the production well and result in the lowering of the temperature of the produced fluids (thermal breakthrough). Efficient operation of an EGS as well as conventional geothermal systems involving cold-fluid injection requires accurate and timely information about thermal depletion of the reservoir in response to operation. In particular, accurate predictions of the time to thermal breakthrough and subsequent rate of thermal drawdown are necessary for reservoir management, design of fracture stimulation and well drilling programs, and forecasting of economic return. A potential method for estimating migration of a cold front between an injection well and a production well is through application of reactive tracer tests, using chemical whose rate of degradation is dependent on the reservoir temperature between the two wells (e.g., Robinson 1985). With repeated tests, the rate of migration of the thermal front can be determined, and the time to thermal breakthrough calculated. While the basic theory behind the concept of thermal tracers has been understood for some time, effective application of the method has yet to be demonstrated. This report describes results of a study that used several methods to investigate application of reactive tracers to monitoring the thermal evolution of a geothermal reservoir. These methods included (1) mathematical investigation of the sensitivity of known and hypothetical reactive tracers, (2) laboratory testing of novel tracers that would improve method sensitivity, (3) development of a software tool for design and interpretation of reactive tracer tests and (4) field testing of the reactive tracer temperature monitoring concept.

Mitchell A. Plummer; Carl D. Palmer; Earl D. Mattson; Laurence C. Hull; George D. Redden

2011-07-01T23:59:59.000Z

73

Design for manufacturability Design verification  

E-Print Network [OSTI]

ITRS Design #12;Design · Design for manufacturability · Design verification #12;Design for Manufacturability · Architecture challenges · Logic and circuit challenges · Layout and physical design challenges · Expected to be the source of multiple DFM challenges · Invest in variability reduction or design

Patel, Chintan

74

Asian Tracer Experiment and Atmospheric Modeling (TEAM) Project: Draft Field Work Plan for the Asian Long-Range Tracer Experiment  

SciTech Connect (OSTI)

This report provides an experimental plan for a proposed Asian long-range tracer study as part of the international Tracer Experiment and Atmospheric Modeling (TEAM) Project. The TEAM partners are China, Japan, South Korea and the United States. Optimal times of year to conduct the study, meteorological measurements needed, proposed tracer release locations, proposed tracer sampling locations and the proposed durations of tracer releases and subsequent sampling are given. Also given are the activities necessary to prepare for the study and the schedule for completing the preparation activities leading to conducting the actual field operations. This report is intended to provide the TEAM members with the information necessary for planning and conducting the Asian long-range tracer study. The experimental plan is proposed, at this time, to describe the efforts necessary to conduct the Asian long-range tracer study, and the plan will undoubtedly be revised and refined as the planning goes forward over the next year.

Allwine, K Jerry; Flaherty, Julia E.

2007-08-01T23:59:59.000Z

75

Monitoring and Commissioning Verification Algorithms for CHP Systems  

SciTech Connect (OSTI)

This document provides the algorithms for CHP system performance monitoring and commissioning verification (CxV). It starts by presenting system-level and component-level performance metrics, followed by descriptions of algorithms for performance monitoring and commissioning verification, using the metric presented earlier. Verification of commissioning is accomplished essentially by comparing actual measured performance to benchmarks for performance provided by the system integrator and/or component manufacturers. The results of these comparisons are then automatically interpreted to provide conclusions regarding whether the CHP system and its components have been properly commissioned and where problems are found, guidance is provided for corrections. A discussion of uncertainty handling is then provided, which is followed by a description of how simulations models can be used to generate data for testing the algorithms. A model is described for simulating a CHP system consisting of a micro-turbine, an exhaust-gas heat recovery unit that produces hot water, a absorption chiller and a cooling tower. The process for using this model for generating data for testing the algorithms for a selected set of faults is described. The next section applies the algorithms developed to CHP laboratory and field data to illustrate their use. The report then concludes with a discussion of the need for laboratory testing of the algorithms on a physical CHP systems and identification of the recommended next steps.

Brambley, Michael R.; Katipamula, Srinivas; Jiang, Wei

2008-03-31T23:59:59.000Z

76

Software Verification and Testing Lecture Notes: Testing I  

E-Print Network [OSTI]

Software Verification and Testing Lecture Notes: Testing I #12;Motivation verification: · powerful · automated techniques rather limited testing: (as "poor man's verification") · can only detect presence mathematical skills 1 #12;Motivation verification vs testing: · verification used often in early stages

Struth, Georg

77

Advancing Reactive Tracer Methods for Measuring Thermal Evolution...  

Open Energy Info (EERE)

Advancing Reactive Tracer Methods for Measuring Thermal Evolution in CO2- and Water-Based Geothermal Reservoirs Geothermal Lab Call Project Jump to: navigation, search Last...

78

Using Thermally-Degrading, Partitioning, and Nonreactive Tracers...  

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

Partitioning, and Nonreactive Tracers to Determine Temperature Distribution and FractureHeat Transfer Surface Area in Geothermal Reservoirs Using Thermally-Degrading,...

79

Integrated Approach to Use Natural Chemical and Isotopic Tracers...  

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

Integrated Approach to Use Natural Chemical and Isotopic Tracers to Estimate Fracture Spacing and Surface Area in EGS Systems Integrated Approach to Use Natural Chemical and...

80

Using Thermally-Degrading, Partitioning, and Nonreactive Tracers...  

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

Partitioning, and Nonreactive Tracers to Determine Temperature Distribution and FractureHeat Transfer Surface Area in Geothermal Reservoirs Track Name May 19, 2010 This...

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Use of Tracers to Characterize Fractures in Engineered Geothermal...  

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

Fractures in Engineered Geothermal Systems Project Objectives: Measure interwell fracture surface area and fracture spacing using sorbing tracers; measure fracture surface...

82

Quantum Dot Tracers for Use in Engineered Geothermal  

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

tracers, colloidal quantum dots, that offer great promise for use in characterizing fracture networks in EGS reservoirs. Since the wavelength of fluorescence (color) of these...

83

Tracer Methods for Characterizing Fracture Stimulation in Enhanced...  

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

80 4.6.7 Tracer Methods for Characterizing Fracture Stimulation in Enhanced Geothermal Systems (EGS) Presentation Number: 034 Investigator: Pruess, Karsten (Lawrence Berkeley...

84

Integrated Approach to Use Natural Chemical and Isotopic Tracers...  

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

Approach to Use Natural Chemical and Isotopic Tracers to Estimate Fracture Spacing and Surface Area in EGS Systems B. Mack Kennedy (Presenter) and H. H. Liu Lawrence Berkeley...

85

Tracer Methods for Characterizing Fracture Stimulation in Engineered...  

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

Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal Systems (EGS) Karsten Pruess Lawrence Berkeley National Lab. May 19, 2010 This presentation does not...

86

Nuclear Data Verification and Standardization  

SciTech Connect (OSTI)

The objective of this interagency program is to provide accurate neutron interaction verification and standardization data for the U.S. Department of Energy Division of Nuclear Physics programs which include astrophysics, radioactive beam studies, and heavy-ion reactions. The measurements made in this program are also useful to other programs that indirectly use the unique properties of the neutron for diagnostic and analytical purposes. These include homeland security, personnel health and safety, nuclear waste disposal, treaty verification, national defense, and nuclear based energy production. The work includes the verification of reference standard cross sections and related neutron data employing the unique facilities and capabilities at NIST and other laboratories as required; leadership and participation in international intercomparisons and collaborations; and the preservation of standard reference deposits. An essential element of the program is critical evaluation of neutron interaction data standards including international coordinations. Data testing of critical data for important applications is included. The program is jointly supported by the Department of Energy and the National Institute of Standards and Technology.

Karam, Lisa R.; Arif, Muhammad; Thompson, Alan K.

2011-10-01T23:59:59.000Z

87

Verification Challenges at Low Numbers  

SciTech Connect (OSTI)

Many papers have dealt with the political difficulties and ramifications of deep nuclear arms reductions, and the issues of ďGoing to ZeroĒ. Political issues include extended deterrence, conventional weapons, ballistic missile defense, and regional and geo-political security issues. At each step on the road to low numbers, the verification required to ensure compliance of all parties will increase significantly. Looking post New START, the next step will likely include warhead limits in the neighborhood of 1000 . Further reductions will include stepping stones at1000 warheads, 100ís of warheads, and then 10ís of warheads before final elimination could be considered of the last few remaining warheads and weapons. This paper will focus on these three threshold reduction levels, 1000, 100ís, 10ís. For each, the issues and challenges will be discussed, potential solutions will be identified, and the verification technologies and chain of custody measures that address these solutions will be surveyed. It is important to note that many of the issues that need to be addressed have no current solution. In these cases, the paper will explore new or novel technologies that could be applied. These technologies will draw from the research and development that is ongoing throughout the national laboratory complex, and will look at technologies utilized in other areas of industry for their application to arms control verification.

Benz, Jacob M.; Booker, Paul M.; McDonald, Benjamin S.

2013-06-01T23:59:59.000Z

88

The ATLAS DDM Tracer monitoring framework  

E-Print Network [OSTI]

The DDM Tracer Service is aimed to trace and monitor the atlas file operations on the Worldwide LHC Computing Grid. The volume of traces has increased significantly since the service started in 2009. Now there are about ~5 million trace messages every day and peaks of greater than 250Hz, with peak rates continuing to climb, which gives the current service structure a big challenge. Analysis of large datasets based on on-demand queries to the relational database management system (RDBMS), i.e. Oracle, can be problematic, and have a significant effect on the database's performance. Consequently, We have investigated some new high availability technologies like messaging infrastructure, specifically ActiveMQ, and key-value stores. The advantages of key value store technology are that they are distributed and have high scalability; also their write performances are usually much better than RDBMS, all of which are very useful for the Tracer service. Indexes and distributed counters have been also tested to improve...

ZANG, D; The ATLAS collaboration; BARISITS, M; LASSNIG, M; Andrew STEWART, G; MOLFETAS, A; BEERMANN, T

2012-01-01T23:59:59.000Z

89

Guide to good practices for independent verification  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Independent Verification, Chapter X of Department of Energy (DOE) Order 5480.19, ``Conduct of Operations Requirements for DOE Facilities.`` The practices in this guide should be considered when planning or reviewing independent verification activities. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19. ``Independent Verification`` is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for coordinated independent verification activities to promote safe and efficient operations.

Not Available

1993-06-01T23:59:59.000Z

90

Guide to good practices for independent verification  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Independent Verification, Chapter X of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements for DOE Facilities.'' The practices in this guide should be considered when planning or reviewing independent verification activities. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19. Independent Verification'' is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for coordinated independent verification activities to promote safe and efficient operations.

Not Available

1993-06-01T23:59:59.000Z

91

Guide to good practices for independent verification  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Independent Verification, Chapter X of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements for DOE Facilities. The practices in this guide should be considered when planning or reviewing independent verification activities. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19. Independent Verification is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for coordinated independent verification activities to promote safe and efficient operations.

NONE

1998-12-01T23:59:59.000Z

92

Superior Energy Performance Measurement and Verification Protocol...  

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

and Verification Protocol for Industry (November 2012) More Documents & Publications Energy Intensity Baselining and Tracking Guidance EnPI V4.0 Tool Algorithm Superior Energy...

93

Interpreting Deer Harvest Records.  

E-Print Network [OSTI]

I Texas A&M versity System Agricultural Extension Service Zerle L. Carpenter. Director College Station B-1486 People Helping People Interpreting Deer Harvest Records LIB ARY Dwight f. Guynn* JUN 11 1985 Deer harvest records... and adequacy of the har vest . The minimum data to collect from deer harvests are: ages, weights, body conditions and measurements of antler size. The data should be grouped according to age categories and ana lyzed separately for bucks and does . This pub...

Guynn, Dwight E.

1984-01-01T23:59:59.000Z

94

ENERGY STAR Test Procedures and Verification | Department of...  

Energy Savers [EERE]

ENERGY STAR ENERGY STAR Test Procedures and Verification ENERGY STAR Test Procedures and Verification The Department of Energy (DOE) is the lead agency in the development and...

95

DOE Verification Testing in Support of ENERGY STAR, April 22...  

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

the Energy Star Verification Testing Program Comment submitted by the Association of Home Appliance Manufacturers (AHAM) regarding the Energy Star Verification Testing Program...

96

ORO Verification of Employment Tracking System(VETS) PIA, Oak...  

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

Verification of Employment Tracking System(VETS) PIA, Oak ridge Operations Office ORO Verification of Employment Tracking System(VETS) PIA, Oak ridge Operations Office ORO...

97

Developing an Evaluation Measurement and Verification Plan for...  

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

and Verification Plan for Your Energy Efficiency ProjectProgram Developing an Evaluation Measurement and Verification Plan for Your Energy Efficiency ProjectProgram...

98

CARB Verification of Catalyzed Diesel Particulate Filters for...  

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

CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets 2005...

99

ADDRESSING PROCESS PLANNING AND VERIFICATION ISSUES WITH MTCONNECT  

E-Print Network [OSTI]

Surfaces in the Cybercut Process Planning PipelineĒ, Trans.ADDRESSING PROCESS PLANNING AND VERIFICATION ISSUES WITHInc. Big Lake, MN KEYWORDS Process planning verification,

Vijayaraghavan, Athulan; Dornfeld, David; Artisanal Software; Remmele Engineering Inc.

2009-01-01T23:59:59.000Z

100

Use of Tracers to Characterize Fractures in Engineered Geothermal Systems  

Broader source: Energy.gov [DOE]

Project Objectives: Measure interwell fracture surface area and fracture spacing using sorbing tracers; measure fracture surface areas adjacent to a single geothermal well using tracers and injection/backflow techniques; design, fabricate and test a downhole instrument for measuring fracture flow following a hydraulic stimulation experiment.

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Preliminary Investigation of Tracer Gas Reaeration Method for Shallow Bays  

E-Print Network [OSTI]

was used with propane for the tracer gas and Rhodamine-WT, a fluorescent dye, for the "conservative" tracer. The propane was injected through porous tile diffusers, and the dye was released simultaneously. The propane acts as a model for the surface...

Baker, Sarah H.; Holley, Edward R.

102

Parallel Finite Element Simulation of Tracer Injection in Oil Reservoirs  

E-Print Network [OSTI]

Parallel Finite Element Simulation of Tracer Injection in Oil Reservoirs Alvaro L.G.A. Coutinho In this work, parallel finite element techniques for the simulation of tracer injection in oil reservoirs. Supercomputers have made it possible to consider global reservoir effects which can not be represented using

Coutinho, Alvaro L. G. A.

103

MIPAS observations of organic tracers for biomass burning and intercontinental transport  

E-Print Network [OSTI]

MIPAS observations of organic tracers for biomass burning and intercontinental transport observations of organic tracers for biomass burning and intercontinental transport Introduction Suite - Oxford - September 2009 #12;MIPAS observations of organic tracers for biomass burning

104

Methods and systems using encapsulated tracers and chemicals for reservoir interrogation and manipulation  

DOE Patents [OSTI]

An apparatus, method, and system of reservoir interrogation. A tracer is encapsulating in a receptacle. The receptacle containing the tracer is injected into the reservoir. The tracer is analyzed for reservoir interrogation.

Roberts, Jeffery; Aines, Roger D; Duoss, Eric B; Spadaccini, Christopher M

2014-11-04T23:59:59.000Z

105

When do tracer particles dominate the Lyapunov spectrum?  

E-Print Network [OSTI]

Dynamical instability is studied in a deterministic dynamical system of Hamiltonian type composed of a tracer particle in a fluid of many particles. The tracer and fluid particles are hard balls (disks, in two dimensions, or spheres, in three dimensions) undergoing elastic collisions. The dynamical instability is characterized by the spectrum of Lyapunov exponents. The tracer particle is shown to dominate the Lyapunov spectrum in the neighborhoods of two limiting cases: the Lorentz-gas limit in which the tracer particle is much lighter than the fluid particles and the Rayleigh-flight limit in which the fluid particles have a vanishing radius and form an ideal gas. In both limits, a gap appears in the Lyapunov spectrum between the few largest Lyapunov exponents associated with the tracer and the rest of the Lyapunov spectrum.

Pierre Gaspard; Henk van Beijeren

2002-02-22T23:59:59.000Z

106

National Biomedical Tracer Facility. Project definition study  

SciTech Connect (OSTI)

We request a $25 million government-guaranteed, interest-free loan to be repaid over a 30-year period for construction and initial operations of a cyclotron-based National Biomedical Tracer Facility (NBTF) in North Central Texas. The NBTF will be co-located with a linear accelerator-based commercial radioisotope production facility, funded by the private sector at approximately $28 million. In addition, research radioisotope production by the NBTF will be coordinated through an association with an existing U.S. nuclear reactor center that will produce research and commercial radioisotopes through neutron reactions. The combined facilities will provide the full range of technology for radioisotope production and research: fast neutrons, thermal neutrons, and particle beams (H{sup -}, H{sup +}, and D{sup +}). The proposed NBTF facility includes an 80 MeV, 1 mA H{sup -} cyclotron that will produce proton-induced (neutron deficient) research isotopes.

Schafer, R.

1995-02-14T23:59:59.000Z

107

The monitoring and verification of nuclear weapons  

SciTech Connect (OSTI)

This paper partially reviews and updates the potential for monitoring and verification of nuclear weapons, including verification of their destruction. Cooperative monitoring with templates of the gamma-ray spectrum are an important tool, dependent on the use of information barriers.

Garwin, Richard L., E-mail: RLG2@us.ibm.com [IBM Fellow Emeritus, IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, NY 10598 (United States)

2014-05-09T23:59:59.000Z

108

Verification after Synthesis Alan Mishchenko Robert Brayton  

E-Print Network [OSTI]

in verification based on BDDs, SAT, and AIGs (And-Inverter Graphs), these results do not readily transfer to large are necessary to advance both synthesis and verification. We propose a methodology for scalable sequential it by a functionally equivalent one (up to complementation of outputs). (2) Retiming changes the positions of one

Brayton, Robert K.

109

Quantum Money with Classical Verification Dmitry Gavinsky  

E-Print Network [OSTI]

Quantum Money with Classical Verification Dmitry Gavinsky NEC Laboratories America, Inc. Princeton, NJ, U.S.A. Abstract We propose and construct a quantum money scheme that allows verification through classical communication with a bank. This is the first demonstration that a secure quantum money scheme

Gavinsky, Dmitry

110

Technical Documentation and Verification for the  

E-Print Network [OSTI]

PNNL-15202 Technical Documentation and Verification for the Buildings Module in the Visual Sample://www.ntis.gov/ordering.htm This document was printed on recycled paper. (9/2003) #12;PNNL-15202 Technical Documentation and Verification ...................................................................... 1 2.0 Documentation of Statistical Methods and Computations

111

Introduction of the Development ofIntroduction of the Development of New PET TracersNew PET Tracers  

E-Print Network [OSTI]

Introduction of the Development ofIntroduction of the Development of New PET TracersNew PET Tracers The Center for Translational Neuroimaging KunKun--EekEek KilKil #12;Principles of PET-1 PET: Positron Emission Tomography #12;Principles of PET-2 Cyclotron Scanner #12;Principles of PET-3 0 0.01 0.02 0.03 0

112

Novel Multi-dimensional Tracers for Geothermal Inter-wall Diagnostics...  

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

Partitioning, and Nonreactive Tracers to Determine Temperature Distribution and FractureHeat Transfer Surface Area in Geothermal Reservoirs Use of Tracers to Characterize...

113

verification  

National Nuclear Security Administration (NNSA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartmentNationalRestart of the Review of theOFFICE OF8/%2A ennike6/%2A en NGSI Safeguards by

114

Primordial black holes as biased tracers  

E-Print Network [OSTI]

Primordial black holes (PBHs) are theoretical black holes which may be formed during the radiation dominant era and, basically, caused by the gravitational collapse of radiational overdensities. It has been well known that in the context of the structure formation in our Universe such collapsed objects, e.g., halos/galaxies, could be considered as bias tracers of underlying matter fluctuations and the halo/galaxy bias has been studied well. Employing a peak-background split picture which is known to be a useful tool to discuss the halo bias, we consider the large scale clustering behavior of the PBH and propose an almost mass-independent constraint to the scenario that dark matters (DMs) consist of PBHs. We consider the case where the statistics of the primordial curvature perturbations is almost Gaussian, but with small local-type non-Gaussianity. If PBHs account for the DM abundance, such a large scale clustering of PBHs behaves as nothing but the matter isocurvature perturbation and constrained strictly by...

Tada, Yuichiro

2015-01-01T23:59:59.000Z

115

Tracking thermal fronts with temperature-sensitive, chemically reactive tracers  

SciTech Connect (OSTI)

Los Alamos is developing tracer techniques using reactive chemicals to track thermal fronts in fractured geothermal reservoirs. If a nonadsorbing tracer flowing from the injection to production well chemically reacts, its reaction rate will be a strong function of temperature. Thus the extent of chemical reaction will be greatest early in the lifetime of the system, and less as the thermal front progresses from the injection to production well. Early laboratory experiments identified tracers with chemical kinetics suitable for reservoirs in the temperature range of 75 to 100/sup 0/C. Recent kinetics studies have focused on the kinetics of hydrolysis of derivatives of bromobenzene. This class of reactions can be used in reservoirs ranging in temperature from 150 to 275/sup 0/C, which is of greater interest to the geothermal industry. Future studies will include laboratory adsorption experiments to identify possibly unwanted adsorption on granite, development of sensitive analytical techniques, and a field demonstration of the reactive tracer concept.

Robinson, B.A.; Birdsell, S.A.

1987-01-01T23:59:59.000Z

116

Mass spectral characterization of petroleum dyes, tracers, and additives  

SciTech Connect (OSTI)

Petroleum dyes, additives, and tracers are important for identifying gasolines in spill and contamination problems. High-resolution mass spectrometry (HRMS) was used for the characterization of 21 commercial petroleum dyes. Many contained common chromophores, typically azo or anthraquinone groups, and often differed only in their degree of alkyl substitution. Few dyes were pure and typically contained several chromogens with homologous series of substituents. A separation method was developed to concentrate the polar fractions containing the additives. Subsequent characterization of the polar fraction by GC/MS showed distinct differences between different gasolines. Various colorless tracers were evaluated in terms of detectability, soil adsorption, and cost. Many tracers exhibited soil adsorption and interferences which limited their detectability. Alcohols in the C8-C10 range were found to be the most suitable tracers with GC/MS detection limits of 1 ppm. 22 references, 4 figures, 3 tables.

Youngless, T.L.; Swansiger, J.T.; Danner, D.A.; Greco, M.

1985-08-01T23:59:59.000Z

117

Inverse modeling of partitioning interwell tracer tests: A streamline approach  

E-Print Network [OSTI]

computations, inverse modeling 1. Introduction [2] It is recognized that the presence of nonaqueous phaseInverse modeling of partitioning interwell tracer tests: A streamline approach Akhil Datta orders of magnitude. INDEX TERMS: 1832 Hydrology: Groundwater transport; 1829 Hydrology: Groundwater

Datta-Gupta, Akhil

118

RENEWABLES PORTFOLIO STANDARD 2005 PROCUREMENT VERIFICATION  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION RENEWABLES PORTFOLIO STANDARD 2005 PROCUREMENT VERIFICATION RENEWABLES COMMITTEE John L. Geesman Presiding Member Jackalyne Pfannenstiel Associate Member B.B. Blevins Executive Director Jason Orta Heather Raitt Principal Authors Mark Hutchison Manager RENEWABLE ENERGY OFFICE

119

Runtime verification of object lifetime specifications  

E-Print Network [OSTI]

This thesis reports on the implementation of a runtime verification system for object lifetime specifications. This system is used to explore and evaluate the expressiveness object lifetime specifications. Object lifetime ...

Benjamin, Zev (Zev A.)

2009-01-01T23:59:59.000Z

120

The Mechanized Verification of Garbage Collector Implementations  

E-Print Network [OSTI]

Abstract The Mechanized Verification of Garbage Collector Implementations Andrew Evan Mc complex, requiring a garbage collector. Garbage collectors are becoming increasingly sophis- ticated to adapt them to high-performance, concurrent and real-time applications, making internal collector

Note: This page contains sample records for the topic "tracer interpretation verification" 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

HYDROGEL TRACER BEADS: THE DEVELOPMENT, MODIFICATION, AND TESTING OF AN INNOVATIVE TRACER FOR BETTER UNDERSTANDING LNAPL TRANSPORT IN KARST AQUIFERS  

SciTech Connect (OSTI)

The goal of this specific research task is to develop proxy tracers that mimic contaminant movement to better understand and predict contaminant fate and transport in karst aquifers. Hydrogel tracer beads are transported as a separate phase than water and can used as a proxy tracer to mimic the transport of non-aqueous phase liquids (NAPL). They can be constructed with different densities, sizes & chemical attributes. This poster describes the creation and optimization of the beads and the field testing of buoyant beads, including sampling, tracer analysis, and quantitative analysis. The buoyant beads are transported ahead of the dissolved solutes, suggesting that light NAPL (LNAPL) transport in karst may occur faster than predicted from traditional tracing techniques. The hydrogel beads were successful in illustrating this enhanced transport.

Amanda Laskoskie, Harry M. Edenborn, and Dorothy J. Vesper

2012-01-01T23:59:59.000Z

122

Building Interpreters with Rewriting Strategies  

E-Print Network [OSTI]

Building Interpreters with Rewriting Strategies Eelco Dolstra Eelco Visser www #12;This technical report is a preprint of: E. Dolstra and E. Visser. Building Interpreters with Rewriting Strategies. To appear in M. G. J. van den Brand and R. L¨ammel (editors) Language Descriptions

Utrecht, Universiteit

123

Monitoring and verification R&D  

SciTech Connect (OSTI)

The 2010 Nuclear Posture Review (NPR) report outlined the Administration's approach to promoting the agenda put forward by President Obama in Prague on April 5, 2009. The NPR calls for a national monitoring and verification R&D program to meet future challenges arising from the Administration's nonproliferation, arms control and disarmament agenda. Verification of a follow-on to New START could have to address warheads and possibly components along with delivery capabilities. Deeper cuts and disarmament would need to address all of these elements along with nuclear weapon testing, nuclear material and weapon production facilities, virtual capabilities from old weapon and existing energy programs and undeclared capabilities. We only know how to address some elements of these challenges today, and the requirements may be more rigorous in the context of deeper cuts as well as disarmament. Moreover, there is a critical need for multiple options to sensitive problems and to address other challenges. There will be other verification challenges in a world of deeper cuts and disarmament, some of which we are already facing. At some point, if the reductions process is progressing, uncertainties about past nuclear materials and weapons production will have to be addressed. IAEA safeguards will need to continue to evolve to meet current and future challenges, and to take advantage of new technologies and approaches. Transparency/verification of nuclear and dual-use exports will also have to be addressed, and there will be a need to make nonproliferation measures more watertight and transparent. In this context, and recognizing we will face all of these challenges even if disarmament is not achieved, this paper will explore possible agreements and arrangements; verification challenges; gaps in monitoring and verification technologies and approaches; and the R&D required to address these gaps and other monitoring and verification challenges.

Pilat, Joseph F [Los Alamos National Laboratory; Budlong - Sylvester, Kory W [Los Alamos National Laboratory; Fearey, Bryan L [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

124

Spectral analysis for evaluation of myocardial tracers for medical imaging  

SciTech Connect (OSTI)

Kinetic analysis of dynamic tracer data is performed with the goal of evaluating myocardial radiotracers for cardiac nuclear medicine imaging. Data from experiments utilizing the isolated rabbit heart model are acquired by sampling the venous blood after introduction of a tracer of interest and a reference tracer. We have taken the approach that the kinetics are properly characterized by an impulse response function which describes the difference between the reference molecule (which does not leave the vasculature) and the molecule of interest which is transported across the capillary boundary and is made available to the cell. Using this formalism we can model the appearance of the tracer of interest in the venous output of the heart as a convolution of the appearance of the reference tracer with the impulse response. In this work we parameterize the impulse response function as the sum of a large number of exponential functions whose predetermined decay constants form a spectrum, and each is required only to have a nonnegative coefficient. This approach, called spectral analysis, has the advantage that it allows conventional compartmental analysis without prior knowledge of the number of compartments which the physiology may require or which the data will support.

Huesman, Ronald H.; Reutter, Bryan W.; Marshall, Robert C.

2000-10-11T23:59:59.000Z

125

Feasibility of a Perfluorocarbon tracer based network to support Monitoring, Verification, and Accounting of Sequestered CO2  

E-Print Network [OSTI]

, and Accounting of Sequestered CO2 Thomas B. Watson* and Terrence Sullivan Brookhaven National Laboratory, Upton% of total sequestered CO2 over the lifetime of the reservoir. This is 0.001% per year for a 1000 year lifetime of a storage reservoir. Effective detection of CO2 leaks at the surface may require incorporation

Johnson, Peter D.

126

A Tutorial on Text-Independent Speaker Verification  

E-Print Network [OSTI]

This paper presents an overview of a state-of-the-art text-independent speaker verification system. First, an introduction proposes a modular scheme of the training and test phases of a speaker verification system. Then, ...

Bimbot, Frederic

127

MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP  

E-Print Network [OSTI]

MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS Thesis Approved by: Dr.................................................................................................................... 16 MODELING OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS

128

Measurement and Verification for Commissioning Projects: Challenges and Opportunities  

E-Print Network [OSTI]

ESL-IC-10/05-49 1 Measurement and Verification for Commissioning Projects: Challenges and Opportunities Kristin Heinemeier, Ph.D., P.E. Portland Energy Conservation, Inc., Sacramento CA Measurement and Verification (M&V) is a key...

Heinemeier, K.

2005-01-01T23:59:59.000Z

129

Plug-and-Play Architectural Design and Verification  

E-Print Network [OSTI]

uses finite-state verification techniques (e.g., SPIN [17], SMV [19], LTSA [22], FLAVERS [10]) to check

Massachusetts at Amherst, University of

130

SOIL TEST INTERPRETATIONS RECOMMENDATIONS HANDBOOK  

E-Print Network [OSTI]

1 SOIL TEST INTERPRETATIONS AND RECOMMENDATIONS HANDBOOK Originally written 1983 By Daryl D..................................................20 SOIL ACIDITY AND LIMESTONE...............................................27 EXCHANGEABLE MAGNESIUM No. Page No. I. Nitrogen rate adjustments based upon soil texture, organic matter, and time of major

Noble, James S.

131

Picture interpretation and Jungian typology  

E-Print Network [OSTI]

This study examines a Jungian picture interpretation schema, which can be used to analyze artistic creations in a therapeutic format. This proposed schema attaches significance to specific areas of a drawing. The upper left of a drawing...

Benson, Derek Paul

2013-02-22T23:59:59.000Z

132

Active alignment/contact verification system  

DOE Patents [OSTI]

A system involving an active (i.e. electrical) technique for the verification of: 1) close tolerance mechanical alignment between two component, and 2) electrical contact between mating through an elastomeric interface. For example, the two components may be an alumina carrier and a printed circuit board, two mating parts that are extremely small, high density parts and require alignment within a fraction of a mil, as well as a specified interface point of engagement between the parts. The system comprises pairs of conductive structures defined in the surfaces layers of the alumina carrier and the printed circuit board, for example. The first pair of conductive structures relate to item (1) above and permit alignment verification between mating parts. The second pair of conductive structures relate to item (2) above and permit verification of electrical contact between mating parts.

Greenbaum, William M. (Modesto, CA)

2000-01-01T23:59:59.000Z

133

Preliminary assessment of halogenated alkanes as vapor-phase tracers  

SciTech Connect (OSTI)

New tracers are needed to evaluate the efficiency of injection strategies in vapor-dominated environments. One group of compounds that seems to meet the requirements for vapor-phase tracing are the halogenated alkanes (HCFCs). HCFCs are generally nontoxic, and extrapolation of tabulated thermodynamic data indicate that they will be thermally stable and nonreactive in a geothermal environment. The solubilities and stabilities of these compounds, which form several homologous series, vary according to the substituent ratios of fluorine, chlorine, and hydrogen. Laboratory and field tests that will further define the suitability of HCFCs as vapor-phase tracers are under way.

Adams, Michael C.; Moore, Joseph N.; Hirtz, Paul

1991-01-01T23:59:59.000Z

134

STATE OF CALIFORNIA CERTIFICATE OF FIELD VERIFICATION AND DIAGNOSTIC TESTING  

E-Print Network [OSTI]

-MECH-25 Refrigerant Charge Verification ­ Standard Measurement Procedure (Page 1 of 6) Site Address of a Charge Indicator Display (CID) is utilized as an alternative to refrigerant charge verification compliance with the refrigerant charge verification requirement. TMAH and STMS are not required

135

Measurement and Verification (M&V)  

E-Print Network [OSTI]

5. Continuous Commissioning Measures 6. Measurement and Verification 2 ESL-KT-14-11-39 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Measurement and Verification (M&V) Joseph T. Martinez, PCC Carlos Yagua, PE Hiroko...Workshop on the Continuous Commissioningģ Process Joseph T. Martinez, PCC Carlos Yagua, PE Hiroko Masuda, Juan-Carlos Baltazar, PhD, PE Ahmet Ugursal, PhD Clean Air Through Energy Efficiency (CATEE) Conference, Dallas, Texas. November 18, 2014...

Masuda, H

2014-01-01T23:59:59.000Z

136

Fuel Retrieval System Design Verification Report  

SciTech Connect (OSTI)

The Fuel Retrieval Subproject was established as part of the Spent Nuclear Fuel Project (SNF Project) to retrieve and repackage the SNF located in the K Basins. The Fuel Retrieval System (FRS) construction work is complete in the KW Basin, and start-up testing is underway. Design modifications and construction planning are also underway for the KE Basin. An independent review of the design verification process as applied to the K Basin projects was initiated in support of preparation for the SNF Project operational readiness review (ORR). A Design Verification Status Questionnaire, Table 1, is included which addresses Corrective Action SNF-EG-MA-EG-20000060, Item No.9 (Miller 2000).

GROTH, B.D.

2000-04-11T23:59:59.000Z

137

36Cl as a tracer in geothermal systems- Example from Valles Caldera...  

Open Energy Info (EERE)

Cl as a tracer in geothermal systems- Example from Valles Caldera, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: 36Cl as a tracer...

138

RADIOGENIC ISOTOPES: TRACERS OF PAST OCEAN CIRCULATION AND EROSIONAL INPUT  

E-Print Network [OSTI]

in the ocean has varied as a function of changes in paleocircu- lation, source provenances, style and intensity-established paleoceano- graphic tracers such as carbon isotopes. INDEX TERMS: 1040 Geochemistry: Isotopic composition Atlantic Deep Water (NADW) according to latest estimates based on results of the World Ocean Circulation

Jellinek, Mark

139

DIVISION S-3-NOTES HYDROLOGIC TRACER EFFECTS ON SOIL  

E-Print Network [OSTI]

and denitrification (the conversion of NOf to N gas)can be important to the fate of NOf and organic pollutants on microbial activity. These effects could be important whentracers areused instudies of the fate and transport of pollutants in the environment. In such studies, it is important to determine if tracer compounds affect

Gold, Art

140

The feasibility of ethyl iodide as an atmospheric tracer  

E-Print Network [OSTI]

. The CCl? was dissolved in toluene and measured with an electron-capture detector. The differences between the two tracers appeared in the lateral distribution measurements where the CC1, showed higher values than the HTO. The HTO results were described...

Everett, Joe Vincent

1976-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Diss. ETH Nr. 10714 Helium und Tritium als Tracer fr  

E-Print Network [OSTI]

Diss. ETH Nr. 10714 Helium und Tritium als Tracer fŁr physikalische Prozesse in Seen ABHANDLUNG zur ZŁrich 1994 #12;Kurzfassung ix Kurzfassung Der radioaktive Zerfall von 3H (Tritium) zu 3He mit einer Fluide aus dem Erdinnern. Helium und Tritium werden massenspektrometrisch analysiert. Im Rahmen dieser Ar

Aeschbach-Hertig, Werner

142

Calibration of hydraulic and tracer tests in fractured media  

E-Print Network [OSTI]

Calibration of hydraulic and tracer tests in fractured media represented by a DFN Model L. D. Donado, X. Sanchez-Vila, E. Ruiz* & F. J. Elorza** * Enviros Spain S.L. ** UPM #12;Fractured Media Water flows through fractures (matrix basically impervious ­ though relevant to transport) Fractures at all

Politècnica de Catalunya, Universitat

143

Formal Verification of SpecC Programs  

E-Print Network [OSTI]

;Outline 1. Old work: Bounded Model Checking for ANSI-C 2. Verification of concurrent ANSI-C programs using Predicate Abstraction SpecC Overview Abstraction Refinement 3. Current work: Hybrid Models #12;ANSI into equation Check equation using SAT Advantages: Completely automated Allows full set of ANSI-C, including

Saranl√Ĺ, Ulu√ß

144

RELAP-7 SOFTWARE VERIFICATION AND VALIDATION PLAN  

SciTech Connect (OSTI)

This INL plan comprehensively describes the software for RELAP-7 and documents the software, interface, and software design requirements for the application. The plan also describes the testing-based software verification and validation (SV&V) processóa set of specially designed software models used to test RELAP-7.

Smith, Curtis L [Idaho National Laboratory; Choi, Yong-Joon [Idaho National Laboratory; Zou, Ling [Idaho National Laboratory

2014-09-01T23:59:59.000Z

145

EMERGING RENEWABLES PROGRAM SYSTEMS VERIFICATION REPORT  

E-Print Network [OSTI]

survey that measured customer experience in applying to the ERP, receiving utility interconnection that instantaneous measurements showed most PV systems were operating in-line with expectations with modest, renewable energy, shading, solar, system performance, system verification, utility interconnection, wind #12

146

EXPERIMENTAL VERIFICATION OF DYNAMIC OPERATION OF  

E-Print Network [OSTI]

- ponent mixtures can be separated into a number of product fractions, whereas in continuous distillationEXPERIMENTAL VERIFICATION OF DYNAMIC OPERATION OF CONTINUOUS AND MULTIVESSEL BATCH DISTILLATION to the paper "Evaluation of Dynamic Models of Distillation Columns with Emphasis on the Initial Response

Skogestad, Sigurd

147

Hybrid Systems: From Verification to Falsification  

E-Print Network [OSTI]

Hybrid Systems: From Verification to Falsification Erion Plaku, Lydia E. Kavraki, and Moshe Y}@cs.rice.edu Abstract. We propose HyDICE, Hybrid DIscrete Continuous Exploration, a multi­layered approach for hybrid. The discrete search uses the discrete transitions of the hybrid system and coarse­grained decompositions

Vardi, Moshe Y.

148

Hybrid Systems: From Verification to Falsification  

E-Print Network [OSTI]

Hybrid Systems: From Verification to Falsification Erion Plaku, Lydia E. Kavraki, and Moshe Y}@cs.rice.edu Abstract. We propose HyDICE, Hybrid DIscrete Continuous Exploration, a multi-layered approach for hybrid. The discrete search uses the discrete transitions of the hybrid system and coarse-grained decompositions

Kavraki, Lydia E.

149

SAVCBS 2003 Specification and Verification of  

E-Print Network [OSTI]

://www.cs.iastate.edu/SAVCBS/ September 1-2, 2003 Helsinki, Finland Workshop at ESEC/FSE 2003 9th European Software Engineering ConferenceSAVCBS 2003 Specification and Verification of Component-Based Systems ESEC/FSE 2003 9th European Software Engineering Conference and 11th ACM SIGSOFT Symposium on the Foundations of Software Engineering

Leavens, Gary T.

150

Compositional Algorithmic Verification of Software Product Lines  

E-Print Network [OSTI]

, and Siavash Soleimanifard2 1 Technische Universit¨at Braunschweig, Germany i.schaefer@tu-braunschweig.de 2 Royal Institute of Technology, Stockholm, Sweden {dilian,siavashs}@csc.kth.se Abstract. Software product expressiveness and a clean and simple model suitable for compositional verification. We generalize a previously

Gurov, Dilian

151

DYES AS TRACERS FOR VADOSE ZONE HYDROLOGY Markus Flury and Nu Nu Wai  

E-Print Network [OSTI]

DYES AS TRACERS FOR VADOSE ZONE HYDROLOGY Markus Flury and Nu Nu Wai Department of Crop and Soil tracers have provided clues about the hydrological cycle as well as flow and transport processes information on dyes used as hydrological tracers, with particular emphasis on vadose zone hydrol- ogy. We

Flury, Markus

152

Aeromagnetic Survey And Interpretation, Ascention Island, South...  

Open Energy Info (EERE)

Interpretation, Ascention Island, South Atlantic Ocean Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Aeromagnetic Survey And Interpretation,...

153

Evolutionary Test Program Induction for Microprocessor Design Verification Fulvio Corno, Gianluca Cumani, Matteo Sonza Reorda, Giovanni Squillero  

E-Print Network [OSTI]

Evolutionary Test Program Induction for Microprocessor Design Verification Fulvio Corno, Gianluca is an assembly program able to maximize a predefined verification metric. Design verification of on-chip

Fernandez, Thomas

154

Command Language Interpreters February 1993  

E-Print Network [OSTI]

MDS Command Language Interpreters Reference Manual February 1993 Software Version: MDS 5.2 VAX.S.A. The following are trademarks of Digitial Equipment Corporation: CDD DECnet VAX DATATRIEVE DECUS VAXcluster DEC MicroVAX VAX Information Architecture DEC/CMS MicroVMS VMS DEC/MMS Rdb/VMS VT IDL (Interactive Data

California at San Diego, University of

155

Modular Interpreted Systems: A Preliminary Report  

E-Print Network [OSTI]

Zachmann (Computer Graphics) #12;Modular Interpreted Systems: A Preliminary Report Wojciech Jamroga1

Zachmann, Gabriel

156

NGSI: IAEA Verification of UF6 Cylinders  

SciTech Connect (OSTI)

The International Atomic Energy Agency (IAEA) is often ignorant of the location of declared, uranium hexafluoride (UF6) cylinders following verification, because cylinders are not typically tracked onsite or off. This paper will assess various methods the IAEA uses to verify cylinder gross defects, and how the task could be ameliorated through the use of improved identification and monitoring. The assessment will be restricted to current verification methods together with one that has been applied on a trial basisóshort-notice random inspections coupled with mailbox declarations. This paper is part of the NNSA Office of Nonproliferation and International Securityís Next Generation Safeguards Initiative (NGSI) program to investigate the concept of a global monitoring scheme that uniquely identifies and tracks UF6 cylinders.

Curtis, Michael M.

2012-06-05T23:59:59.000Z

157

Conceptual design. Final report: TFE Verification Program  

SciTech Connect (OSTI)

This report documents the TFE Conceptual Design, which provided the design guidance for the TFE Verification program. The primary goals of this design effort were: (1) establish the conceptual design of an in-core thermionic reactor for a 2 Mw(e) space nuclear power system with a 7-year operating lifetime; (2) demonstrate scalability of the above concept over the output power range of 500 kW(e) to 5 MW(e); and (3) define the TFE which is the basis for the 2 MW (e) reactor design. This TFE specification provided the basis for the test program. These primary goals were achieved. The technical approach taking in the conceptual design effort is discussed in Section 2, and the results are discussed in Section 3. The remainder of this introduction draws a perspective on the role that this conceptual design task played in the TFE Verification Program.

Not Available

1994-03-01T23:59:59.000Z

158

GRIMHX verification and validation action matrix summary  

SciTech Connect (OSTI)

WSRC-RP-90-026, Certification Plan for Reactor Analysis Computer Codes, describes a series of action items to be completed for certification of reactor analysis computer codes used in Technical Specifications development and for other safety and production support calculations. Validation and verification of the code is an integral part of this process. This document identifies the work performed and documentation generated to satisfy these action items for the Reactor Physics computer code GRIMHX. Each action item is discussed with the justification for its completion. Specific details of the work performed are not included in this document but are found in the references. The publication of this document signals the validation and verification effort for the GRIMHX code is completed.

Trumble, E.F.

1991-12-01T23:59:59.000Z

159

Survey of Existing Tools for Formal Verification.  

SciTech Connect (OSTI)

Formal methods have come into wide use because of their effectiveness in verifying %22safety and security%22 requirements of digital systems; a set of requirements for which testing is mostly ineffective. Formal methods are routinely used in the design and verification of high-consequence digital systems in industry. This report outlines our work in assessing the capabilities of commercial and open source formal tools and the ways in which they can be leveraged in digital design workflows.

Punnoose, Ratish J.; Armstrong, Robert C.; Wong, Matthew H.; Jackson, Mayo

2014-12-01T23:59:59.000Z

160

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, What is the skill of ocean tracers in reducing uncertainties  

E-Print Network [OSTI]

in current Earth system models and (ii) imperfect knowledge of model parameters. Ocean tracers observa- tions

Haran, Murali

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Logic verification using recursive learning, ATPG and transformations  

E-Print Network [OSTI]

17 Example Circuits for Verification Showing an Existing Condi- tional Don't Care Condition. 33 18 Justification of the Conditional Don't Care Condition in the Ex- ample Circuits. FIGURE Page Transformation Using Conditional Don't Care Condition... of the Implementation Verification phase, sometimes it is termed Design Verification as in [17j. In this case the specification and design are both at logic level. Logic circuits can be combinational or sequential. If the circuits being compared are combinational, i...

Paul, Debjyoti

1996-01-01T23:59:59.000Z

162

SAT-based Verification for Analog and Mixed-signal Circuits  

E-Print Network [OSTI]

The wide application of analog and mixed-signal (AMS) designs makes the verification of AMS circuits an important task. However, verification of AMS circuits remains as a significant challenge even though verification techniques for digital circuits...

Deng, Yue

2012-07-16T23:59:59.000Z

163

Optimization Online - Termination and Verification for Ill-Posed ...  

E-Print Network [OSTI]

Jun 17, 2005 ... Termination and Verification for Ill-Posed Semidefinite Programming Problems. Christian Jansson (jansson ***at*** tu-harburg.de). Abstract:†...

Christian Jansson

2005-06-17T23:59:59.000Z

164

assertions based verification: Topics by E-print Network  

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

A possible explanation is given. 1 SCIAMACHY'S PMD CHANNELS Graaf, Martin de 418 LTSA-WS: a tool for modelbased verification of web service compositions and choreography...

165

Thermal Hydraulic Modeling: Cross-Verification, Validation and...  

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

Aleks Obabko, Paul Fischer, and Tim Tautges, Argonne National Laboratory Thermal Hydraulic Modeling: Cross-Verification, Validation and Co-design PI Name: Paul F. Fischer PI...

166

Measurement and Verification of Low Income Energy Efficiency...  

Open Energy Info (EERE)

Low Income Energy Efficiency Programs in Brazil: Methodological Challenges Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Measurement and Verification of Low Income...

167

addressing verification challenges: Topics by E-print Network  

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

Kulyukin Computer Technologies and Information Sciences Websites Summary: A Cartesian Robot for RFID Signal Distribution Model Verification Aliasgar Kutiyanawala Vladimir (PRF)...

168

automated verification process: Topics by E-print Network  

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

Kulyukin Computer Technologies and Information Sciences Websites Summary: A Cartesian Robot for RFID Signal Distribution Model Verification Aliasgar Kutiyanawala Vladimir (PRF)...

169

Measurement and Verification, Best Practices in Design and Implementation  

E-Print Network [OSTI]

. Measurement?and? Verification,?Best?Practices? in?Design?and? Implementation Tom?Martin? CMVP,?LEED?AP Homay?Khatami? CEM,?LEED?AP PMP,?CMC? 1. Definition?of?Measurement?and?Verification?(M&V) 2. Applications?of?M&V 3. Specific.... Analyze?? Reporting M&V,?Best?Practices?in?Design?and?Implementation ?Measurement?and?Verification?is?the?process? of?using?measurements?to?reliably?determine? actual?savings? International?Performance?Measurement?and? Verification?Protocol?? Vol I...

Martin, T.; Khatami, H.

2013-01-01T23:59:59.000Z

170

Advanced Waste Management Now Available as Accredited SEP Verification...  

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

"Our auditing teams provide robust, independent confirmation that a facility conforms to ISO 50001 and has really improved its energy performance." SEP Verification Bodies...

171

NEMVP: North American energy measurement and verification protocol  

SciTech Connect (OSTI)

This measurement and verification protocol discusses procedures that,when implemented, allow buyers, sellers, and financiers of energy projects to quantify energy conservation measure performance and savings.

NONE

1996-03-01T23:59:59.000Z

172

A golden anniversary for space-based treaty verification  

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

enabled serendipitous discoveries of remarkable natural phenomena such as cosmic gamma-ray bursts, X-ray novae and solar wind composition. Modern space-based verification systems...

173

Reservoir characterization based on tracer response and rank analysis of production and injection rates  

SciTech Connect (OSTI)

Quantification of the spatial distribution of properties is important for many reservoir-engineering applications. But, before applying any reservoir-characterization technique, the type of problem to be tackled and the information available should be analyzed. This is important because difficulties arise in reservoirs where production records are the only information for analysis. This paper presents the results of a practical technique to determine preferential flow trends in a reservoir. The technique is a combination of reservoir geology, tracer data, and Spearman rank correlation coefficient analysis. The Spearman analysis, in particular, will prove to be important because it appears to be insightful and uses injection/production data that are prevalent in circumstances where other data are nonexistent. The technique is applied to the North Buck Draw field, Campbell County, Wyoming. This work provides guidelines to assess information about reservoir continuity in interwell regions from widely available measurements of production and injection rates at existing wells. The information gained from the application of this technique can contribute to both the daily reservoir management and the future design, control, and interpretation of subsequent projects in the reservoir, without the need for additional data.

Refunjol, B.T. [Lagoven, S.A., Pdvsa (Venezuela); Lake, L.W. [Univ. of Texas, Austin, TX (United States)

1997-08-01T23:59:59.000Z

174

COMPARISON OF THREE TRACER TESTS AT THE RAFT RIVER GEOTHERMAL SITE  

SciTech Connect (OSTI)

Three conservative tracer tests have been conducted through the Bridge Fault fracture zone at the Raft River Geothermal (RRG) site. All three tests were conducted between injection well RRG-5 and production wells RRG-1 (790 m distance) and RRG-4 (740 m distance). The injection well is used during the summer months to provide pressure support to the production wells. The first test was conducted in 2008 using 136 kg of fluorescein tracer. Two additional tracers were injected in 2010. The first 2010 tracer injected was 100 kg fluorescein disodium hydrate salt on June, 21. The second tracer (100 kg 2,6-naphthalene disulfonic acid sodium salt) was injected one month later on July 21. Sampling of the two productions wells is still being performed to obtain the tail end of the second 2010 tracer test. Tracer concentrations were measured using HPLC with a fluorescence detector. Results for the 2008 test, suggest 80% tracer recover at the two production wells. Of the tracer recovered, 85% of tracer mass was recovered in well RRG-4 indicating a greater flow pathway connection between injection well and RRG-4 than RRG-1. Fluorescein tracer results appear to be similar between the 2008 and 2010 tests for well RRG-4 with peak concentrations arriving approximately 20 days after injection despite the differences between the injection rates for the two tests (~950 gpm to 475 gpm) between the 2008 and 2010. The two 2010 tracer tests will be compared to determine if the results support the hypothesis that rock contraction along the flow pathway due to the 55 oC cooler water injection alters the flow through the ~140 oC reservoir.

Earl D Mattson; Mitchell Plummer; Carl Palmer; Larry Hull; Samantha Miller; Randy Nye

2011-02-01T23:59:59.000Z

175

Use of tracers in materials-holdup study  

SciTech Connect (OSTI)

Holdup measurements of special nuclear materials in large processing facilities offer considerable challenges to conventional nondestructive-assay techniques. The use of judiciously chosen radioactive tracers offer a unique method of overcoming this difficulty. Three examples involving the use of /sup 46/Sc and fission products from activated uranium in large-scale experimental studies of uranium holdup are discussed. A justification for the method and its advantages along with examples of successful applications of this technique for large-sale experimental studies are presented.

Pillay, K.K.S.

1983-01-01T23:59:59.000Z

176

Determination of water saturation using gas phase partitioning tracers and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesData FilesShape, Density,TiO2(110). |Gas-phase Tracer

177

Sandia National Laboratories: tracer studies integrated with geophysical  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational SolartSSLPV materialsmethods tracer

178

Verification of Probabilistic Real-time Systems Marta Kwiatkowska1  

E-Print Network [OSTI]

widely taken up (downloaded more than 20,000 times) and used for quan- titative verification in a broad of (priced) probabilistic timed automata. These model systems exhibiting probabilistic, nondeterministic-time characteristics, through support for verification of (priced) probabilistic timed automata. PRISM already provides

Oxford, University of

179

Modular Verification of Timed Circuits Using Automatic Abstraction  

E-Print Network [OSTI]

Modular Verification of Timed Circuits Using Automatic Abstraction Hao Zheng, Eric Mercer, Member for verification of timed circuits using automatic abstraction. This approach partitions the design into modules by the RAPPID instruction length decoder designed at Intel [2]. This design was 3 times faster while using only

Zheng, Hao

180

VIS Analyzer: A Visual Assistant for VIS Verification and Analysis  

E-Print Network [OSTI]

in demonstrating the quality of safety-critical [1] systems such as nuclear power plants. We have used the VIS necessary to understand the full verification scenario accurately. Many nuclear engineers and verification and analysis, which can help nuclear engineers take full benefits of VIS without being overwhelmed

Note: This page contains sample records for the topic "tracer interpretation verification" 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

History Effects and Verification Christian Skalka and Scott Smith  

E-Print Network [OSTI]

. Verification consists of checking to make sure that histories are well-formed, i.e. the sequence of eventsHistory Effects and Verification Christian Skalka and Scott Smith The University of Vermont skalka@cs.uvm.edu The Johns Hopkins University, scott@cs.jhu.edu Abstract. This paper shows how type effect systems can

Smith, Scott F.

182

First Eye Movement Verification and Identification Competition at BTAS 2012  

E-Print Network [OSTI]

First Eye Movement Verification and Identification Competition at BTAS 2012 Pawel Kasprowski11,ak26}@txstate.edu Abstract--This paper presents the results of the first eye movement verification and methods used in the competition. The results highlight the importance of very careful eye positional data

Oleg, Komogortsev - Department of Computer Science, Texas State University

183

LUNAR SEISMIC PROFILING EXPERIMENT DESIGN VERIFICATION THERMAL PAGI OF  

E-Print Network [OSTI]

of the Analytical Model with Test Data 50 1. 1 5. 1. 2 5. 1. 3 5. I. 4 Lunar Surface and Cold Wall to ExperimentATM 1109 LUNAR SEISMIC PROFILING EXPERIMENT DESIGN VERIFICATION THERMAL PAGI OF VACUUM TEST DATE 9 /1 5I 72 This ATM summarizes the LSPE Design Verification Thermal Vacuum Test of the prototype model

Rathbun, Julie A.

184

Fast 3D Scanning for Biometric Identification and Verification  

E-Print Network [OSTI]

Fast 3D Scanning for Biometric Identification and Verification June 2011 Authors Anselmo., & Chen, A. (2011). Fast 3D Scanning for Biometric Identification and Verification. (Prepared by RTI..................................................10 Summary and Findings for Integration of Imperceptible Structured Lighting and SIS's 3D Snapshot

McShea, Daniel W.

185

Power Grid Voltage Integrity Verification Department of ECE  

E-Print Network [OSTI]

Power Grid Voltage Integrity Verification Maha Nizam Department of ECE University of Toronto devgan@magma-da.com ABSTRACT Full-chip verification requires one to check if the power grid is safe, i.e., if the voltage drop on the grid does not exceed a cer- tain threshold. The traditional simulation-based solution

Najm, Farid N.

186

Software Verification in the Google App-Engine Cloud  

E-Print Network [OSTI]

resources. In the last years, cloud services emerged as an inexpensive, flexible, and energy for verification. We chose the platform-as-a-service offer Google App Engine and ported the open are available on demand. This enables a verification process that is less expensive (only actual usage is paid

Beyer, Dirk

187

Optimal combination of data verification and materials accountancy  

SciTech Connect (OSTI)

Materials accountancy accompanied by data verification is one of the main elements in international safeguards of nuclear material. In this paper statistical combinations of materials accountancy and data verification are discussed with the boundary condition of a fixed total false-alarm probability.

Beedgen, R.; Hafer, J.F.

1982-01-01T23:59:59.000Z

188

FORECAST VERIFICATION OF EXTREMES: USE OF EXTREME VALUE THEORY  

E-Print Network [OSTI]

1 FORECAST VERIFICATION OF EXTREMES: USE OF EXTREME VALUE THEORY Rick Katz Institute for Study ON EXTREMES · Emil Gumbel (1891 ­ 1966) -- Pioneer in application of statistics of extremes (Germany, France) Conventional Methods (3) Extreme Value Theory (EVT) (4) Application of EVT to Verification (5) Frost

Katz, Richard

189

Core analysis workstation development and verification  

SciTech Connect (OSTI)

An engineering workstation utilizing a three-dimensional reactor simulator along with a series of auxiliary programs has been developed for use in predicting core reactivity and power distributions. This workstation can be used by both core analysis and core operations personnel. Expected applications are power distribution analyses, technical specification limit verification, and various types of reactivity analyses. Reactor operations personnel can quickly simulate load follow or other reactor maneuvers and, through the interactive graphics capability of the personal computer, the reactor responses, such as power distribution and control rod position, can be displayed and understood by operations personnel.

Mays, C.W.; Kochendarfer, R.A.; Mays, B.E.

1987-01-01T23:59:59.000Z

190

PUC's New Evaluation, Measurement and Verification Framework  

E-Print Network [OSTI]

Clean Air Through Energy Efficiency Conference December 16-18, 2013 San Antonio, Texas ESL-KT-13-12-11 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Evaluation, Measurement & Verification in Texas... Pam Osterloh, Senior EE/DR Coordinator AEP Texas December 17, 2013 ESL-KT-13-12-11 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 ? A few simple wordsÖÖ ? 82nd Texas Legislative Session in 2011 ? PURA 39...

Osterloh, P.

2013-01-01T23:59:59.000Z

191

NREL: Wind Research - Field Verification Project  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andData andFleet Test andField Verification Project The mission of the

192

Determination of Water Saturation in Relatively Dry Porous Media Using Gas-phase Tracer Tests  

SciTech Connect (OSTI)

Soil desiccation (drying), involving water evaporation induced by dry air injection and extraction, is a potentially robust remediation process to slow migration of inorganic or radionuclide contaminants through the vadose zone. The application of gas-phase partitioning tracer tests has been proposed as a means to estimate initial water volumes and to monitor the progress of the desiccation process at pilot-test and field sites. In this paper, tracer tests have been conducted in porous medium columns with various water saturations using sulfur hexafluoride as the conservative tracer and tricholorofluoromethane and difluoromethane as the water-partitioning tracers. For porous media with minimal silt and/or organic matter fractions, tracer tests provided reasonable saturation estimates for saturations close to zero. However, for sediments with significant silt and/or organic matter fractions, tracer tests only provided satisfactory results when the water saturation was at least 0.1 - 0.2. For dryer conditions, the apparent tracer retardation increases due to air Ė soil sorption, which is not included in traditional retardation coefficients derived from advection-dispersion equations accounting only for air Ė water partitioning and water Ė soil sorption. Based on these results, gas-phase partitioning tracer tests may be used to determine initial water volumes in sediments, provided the initial water saturations are sufficiently large. However, tracer tests are not suitable for quantifying moisture content in desiccated sediments.

Oostrom, Martinus; Tartakovsky, Guzel D.; Wietsma, Thomas W.; Truex, Michael J.; Dane, Jacob H.

2011-04-15T23:59:59.000Z

193

Calcium translocation and whole plant transpiration: spatial and temporal measurements using radio-Strontium as tracer  

E-Print Network [OSTI]

comparison with zinc, strontium and rubidium. Annals of783- Wasserman RH. 1998. Strontium as a tracer for calciumor inapplicable. As Strontium (Sr) was found to behave in

Seligmann, Ron; Wengrowicz, Udi; Tirosh, Danny; Yermiyahu, Uri; Bar-Tal, Asher; Schwartz, Amnon

2009-01-01T23:59:59.000Z

194

E-Print Network 3.0 - activity optimal tracers Sample Search...  

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

AND AMOC Abstract Current projections of the oceanic response... in current Earth system models and (ii) imperfect knowledge of model parameters. Ocean tracers observa- tions...

195

Steam tracer experiment at the Hoe Creek No. 3 underground coal gasification field test  

SciTech Connect (OSTI)

Water plays an important role in in-situ coal gasification. To better understand this role, we conducted a steam tracer test during the later stages of the Hoe Creek No. 3 underground coal gasification field test. Deuterium oxide was used as the tracer. This report describes the tracer test and the analysis of the data obtained. The analysis indicates that at Hoe Creek the injected steam interacts with a large volume of water as it passes through the underground system. We hypothesize that this water is undergoing continual reflux in the underground system, resulting in a tracer response typical of a well-stirred tank.

Thorsness, C.B.

1980-11-26T23:59:59.000Z

196

Estimation of tracer diffusion coefficients of ions in aqueous solution  

SciTech Connect (OSTI)

Equations are given for estimating tracer diffusion coefficients D/sub i//sup 0/ of ions at infinite dilution in terms of limiting ionic conductances ..lambda../sub i//sup 0/. Also given are generalized Nernst-Hartley equations for binary and multicomponent diffusion coefficients D/sup 0/ and D/sub ij//sup 0/, respectively, at infinite dilution. Data, estimates, and correlations for ..lambda../sub i//sup 0/ at 25/sup 0/C and other temperatures are discussed. Estimated values of ..lambda../sub i//sup 0/ are tabulated from 0-300/sup 0/C for ions of waste isolation interest and for ions of economic interest in geothermal brines. Estimates of their tracer diffusion coefficients at infinite dilution are tabulated. A rule of thumb, good to a factor of 2, is presented. Very limited data (available only at 25/sup 0/C) indicate that D/sub i//D/sub i//sup 0/ generally declines as the concentration of salt or supporting electrolyte increases. 6 figures, 2 tables.

Miller, D.G.

1982-09-07T23:59:59.000Z

197

Monitoring/Verification Using DMS: TATP Example  

SciTech Connect (OSTI)

Field-rugged and field-programmable differential mobility spectrometry (DMS) networks provide highly selective, universal monitoring of vapors and aerosols at detectable levels from persons or areas involved with illicit chemical/biological/explosives (CBE) production. CBE sensor motes used in conjunction with automated fast gas chromatography with DMS detection (GC/DMS) verification instrumentation integrated into situational operationsmanagement systems can be readily deployed and optimized for changing application scenarios. The feasibility of developing selective DMS motes for a ďsmart dustĒ sampling approach with guided, highly selective, fast GC/DMS verification analysis is a compelling approach to minimize or prevent the illegal use of explosives or chemical and biological materials. DMS is currently one of the foremost emerging technologies for field separation and detection of gas-phase chemical species. This is due to trace-level detection limits, high selectivity, and small size. GC is the leading analytical method for the separation of chemical species in complex mixtures. Low-thermal-mass GC columns have led to compact, low-power field systems capable of complete analyses in 15Ė300 seconds. A collaborative effort optimized a handheld, fast GC/DMS, equipped with a non-rad ionization source, for peroxide-based explosive measurements.

Kevin Kyle; Stephan Weeks

2008-03-01T23:59:59.000Z

198

Comment submitted by Traulsen regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by Traulsen regarding the Energy Star Verification Testing Program

199

Comment submitted by Consumers Union regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by Consumers Union regarding the Energy Star Verification Testing Program

200

Comment submitted by Whirlpool Corporation regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by Whirlpool Corporation regarding the Energy Star Verification Testing Program

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Energy Savings Performance Contracting-Savings Measurement and Verification Transcript 2-24-2011.doc  

Broader source: Energy.gov [DOE]

Energy Savings Performance Contracting-Savings Measurement and Verification Transcript 2-24-2011.doc

202

State and Local Energy Savings Performance Contracting: Savings Measurement and Verification (M&V)  

Broader source: Energy.gov [DOE]

State and Local Energy Savings Performance Contracting: Savings Measurement and Verification (M&V) Webinar.

203

Developing an Evaluation Measurement and Verification Plan for Your Energy Efficiency Project/Program  

Broader source: Energy.gov [DOE]

Developing an Evaluation Measurement and Verification Plan for Your Energy Efficiency Project/Program

204

Identification and characterization of conservative organic tracers for use as hydrologic tracers for the Yucca Mountain Site Characterization Study; Progress report, January 1, 1991--June 30, 1991  

SciTech Connect (OSTI)

Studies continue on the use of organic acids as tracers in hydrology studies of Yucca Mountain. Work performed during this time period has been concentrated in three main areas: the familiarization with, and optimization of, the LC-MS hardware and data system; the initial development of soil column test procedures, which are used for evaluation of both the columns themselves and the tracer compounds; and continuation of the batch sorption and degradation studies for the potential tracers. All three of these tasks will continue, as the addition of new tracer compounds, analytical information, and equipment will necessitate further evaluation of existing methods and procedures. Also included in this report is the final report on an information system.

Stetzenbach, K.J.

1991-12-31T23:59:59.000Z

205

Numerical study of the diapycnal flow through a tidal front with passive tracers  

E-Print Network [OSTI]

. This qualitatively agrees with a recent field experiment using a dye tracer on Georges Bank. Additional experiments are performed to investigate the sensitivity of the tracer dispersion to the tidal phase and the location, the previous studies indicated Eulerian cross-front mean circu- lation maybe is in a multiple-cell structure

Dong, Changming "Charles"

206

SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER  

E-Print Network [OSTI]

SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER, and Architectural Engineering 2006 #12;ii This thesis entitled: Sources and Effects of Mining-Related and Natural Acid Rock Drainage Quantified Using Tracer Dilution, Coal Creek Watershed, Gunnison County, Colorado

Ryan, Joe

207

A dye tracer reveals cross-shelf dispersion and interleaving on the Oregon shelf  

E-Print Network [OSTI]

A dye tracer reveals cross-shelf dispersion and interleaving on the Oregon shelf A. C. Dale,1 M. D December 2005; published 3 February 2006. [1] A fluorescent dye tracer was injected into the pycnocline the other in the water column, split by interleaving dye-free water. The vertical scale of these layers

Kurapov, Alexander

208

Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period  

E-Print Network [OSTI]

Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period R (2006), Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period histories from ice coring of Greenland and Antarctica over the period 2 to 45 ka, using SO4 anomalies

Price, P. Buford

209

First Tracer Test After Circulation in Desert Peak 27-15  

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

Following the successful stimulation of Desert Peak target EGS well 27-15, a circulation test was initiated by injecting a conservative tracer (1,5-nds) in combination with a reactive tracer (7-amino-1,3-naphthalene disulfonate). The closest production well 74-21 was monitored over the subsequent several months.

Rose, Peter

210

First Tracer Test After Circulation in Desert Peak 27-15  

SciTech Connect (OSTI)

Following the successful stimulation of Desert Peak target EGS well 27-15, a circulation test was initiated by injecting a conservative tracer (1,5-nds) in combination with a reactive tracer (7-amino-1,3-naphthalene disulfonate). The closest production well 74-21 was monitored over the subsequent several months.

Rose, Peter

2013-11-16T23:59:59.000Z

211

Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal Systems (EGS)  

Broader source: Energy.gov [DOE]

Project objectives: identify tracers with sorption properties favorable for EGS applications; apply reversibly sorbing tracers to determine the fracture-matrix interface area available for heat transfer; and; explore the feasibility of obtaining fracture-matrix interface area from non-isothermal; single-well injection-withdrawal (SWIW) tests.

212

Slew-rate dependence of tracer magnetization response in magnetic particle imaging  

SciTech Connect (OSTI)

Magnetic Particle Imaging (MPI) is a new biomedical imaging technique that produces real-time, high-resolution tomographic images of superparamagnetic iron oxide nanoparticle tracers. Currently, 25?kHz and 20?mT/?{sub 0} excitation fields are common in MPI, but lower field amplitudes may be necessary for patient safety in future designs. Here, we address fundamental questions about MPI tracer magnetization dynamics and predict tracer performance in future scanners that employ new combinations of excitation field amplitude (H{sub o}) and frequency (?). Using an optimized, monodisperse MPI tracer, we studied how several combinations of drive field frequencies and amplitudes affect the tracer's response, using Magnetic Particle Spectrometry and AC hysteresis, for drive field conditions at 15.5, 26, and 40.2?kHz, with field amplitudes ranging from 7 to 52?mT/?{sub 0}. For both fluid and immobilized nanoparticle samples, we determined that magnetic response was dominated by Nťel reversal. Furthermore, we observed that the peak slew-rate (?H{sub o}) determined the tracer magnetic response. Smaller amplitudes provided correspondingly smaller field of view, sometimes resulting in excitation of minor hysteresis loops. Changing the drive field conditions but keeping the peak slew-rate constant kept the tracer response almost the same. Higher peak slew-rates led to reduced maximum signal intensity and greater coercivity in the tracer response. Our experimental results were in reasonable agreement with Stoner-Wohlfarth model based theories.

Shah, Saqlain A.; Krishnan, K. M., E-mail: kannanmk@uw.edu [Materials Science and Engineering, University of Washington, Seattle, Washington 98195 (United States); Ferguson, R. M. [LodeSpin Labs, P.O. Box 95632, Seattle, Washington 98145 (United States)

2014-10-28T23:59:59.000Z

213

Heat as a tracer to determine streambed water exchanges Jim Constantz1  

E-Print Network [OSTI]

Heat as a tracer to determine streambed water exchanges Jim Constantz1 Received 13 March 2008 of heat as a tracer of shallow groundwater movement and describes current temperature-based approaches relying on traditional observation wells, and remote sensing and other large-scale advanced temperature

214

SAND TRACER MOVEMENT MEASURED IN A STRONG RIP CURRENT Nicholas C. Kraus  

E-Print Network [OSTI]

exceeding 50 cm/sec in areas where instruments could be placed. Three colors of sand tracer were injected the diver's signal, a float tied to the diver's wrist was released and allowed to flow with the current because of the cold water, placed instruments, injected the tracer, and sampled the bottom with ropes tied

US Army Corps of Engineers

215

Curvature Induced Activation of a Passive Tracer in an Active Bath  

E-Print Network [OSTI]

We use numerical simulations to study the motion of a large asymmetric tracer immersed in a low density suspension of self-propelled nanoparticles in two dimensions. Specifically, we analyze how the curvature of the tracer affects its translational and rotational motion in an active environment. We find that even very small amounts of curvature are sufficient for the active bath to impart directed motion to the tracer which results in its effective activation. We propose simple scaling arguments to characterize this induced activity in terms of the curvature of the tracer and the strength of the self-propelling force. Our results suggest new ways of controlling the transport properties of passive tracers in an active medium by carefully tailoring their geometry.

S. A. Mallory; C. Valeriani; A. Cacciuto

2014-09-25T23:59:59.000Z

216

L\\'evy Fluctuations and Tracer Diffusion in Dilute Suspensions of Algae and Bacteria  

E-Print Network [OSTI]

Swimming microorganisms rely on effective mixing strategies to achieve efficient nutrient influx. Recent experiments, probing the mixing capability of unicellular biflagellates, revealed that passive tracer particles exhibit anomalous non-Gaussian diffusion when immersed in a dilute suspension of self-motile Chlamydomonas reinhardtii algae. Qualitatively, this observation can be explained by the fact that the algae induce a fluid flow that may occasionally accelerate the colloidal tracers to relatively large velocities. A satisfactory quantitative theory of enhanced mixing in dilute active suspensions, however, is lacking at present. In particular, it is unclear how non-Gaussian signatures in the tracers' position distribution are linked to the self-propulsion mechanism of a microorganism. Here, we develop a systematic theoretical description of anomalous tracer diffusion in active suspensions, based on a simplified tracer-swimmer interaction model that captures the typical distance scaling of a microswimmer'...

Zaid, Irwin M; Yeomans, Julia M

2010-01-01T23:59:59.000Z

217

Automated Verification of Practical Garbage Collectors  

E-Print Network [OSTI]

Garbage collectors are notoriously hard to verify, due to their low-level interaction with the underlying system and the general difficulty in reasoning about reachability in graphs. Several papers have presented verified collectors, but either the proofs were hand-written or the collectors were too simplistic to use on practical applications. In this work, we present two mechanically verified garbage collectors, both practical enough to use for real-world C# benchmarks. The collectors and their associated allocators consist of x86 assembly language instructions and macro instructions, annotated with preconditions, postconditions, invariants, and assertions. We used the Boogie verification generator and the Z3 automated theorem prover to verify this assembly language code mechanically. We provide measurements comparing the performance of the verified collector with that of the standard Bartok collectors on off-the-shelf C# benchmarks, demonstrating their competitiveness.

Hawblitzel, Chris

2010-01-01T23:59:59.000Z

218

Using Biofuel Tracers to Study Alternative Combustion Regimes  

SciTech Connect (OSTI)

Interest in the use of alternative fuels and combustion regimes is increasing as the price of petroleum climbs. The inherently higher efficiency of Diesel engines has led to increased adoption of Diesels in Europe, capturing approximately 40% of the new passenger car market. Unfortunately, lower CO{sub 2} emissions are countered with higher nitrogen oxides (NOx) and particulate matter (PM) emissions, and higher noise. Noise and PM have traditionally been the obstacles toward consumer acceptance of Diesel passenger cars in North America, while NOx (a key component in photochemical smog) has been more of an engineering challenge. Diesels are lean burning (combustion with excess oxygen) and reducing NOx to N2 in an oxygen rich environment is difficult. Adding oxygenated compounds to the fuel helps reduce PM emissions, but relying on fuel alone to reduce PM is unrealistic. Keeping peak combustion temperature below 1700 K prevents NOx formation. Altering the combustion regime to burn at temperatures below the NOx threshold and accept a wide variety of fuels seems like a promising alternative for future engines. Homogeneous Charge Compression Ignition (HCCI) is a possible solution. Fuel and air are well mixed prior to intake into a cylinder (homogeneous charge) and ignition occurs by compression of the fuel-air mixture by the piston. HCCI is rapid and relatively cool, producing little NOx and PM. Unfortunately, it is hard to control since HCCI is initiated by temperature and pressure instead of a spark or direct fuel injection. We investigate biofuel HCCI combustion, and use intrinsically labeled biofuels as tracers of HCCI combustion. Data from tracer experiments are used to validate combustion modeling.

Mack, J H; Flowers, D L; Buchholz, B A; Dibble, R W

2006-02-14T23:59:59.000Z

219

AERIAL PHOTO INTERPRETATION NATIONAL INVENTORY OF LANDSCAPES  

E-Print Network [OSTI]

MANUAL FOR AERIAL PHOTO INTERPRETATION IN THE NATIONAL INVENTORY OF LANDSCAPES IN SWEDEN NILS YEAR.................................................................................................. 10 2.1.4 Information for directed field inventories

220

IT Licentiate theses Practical Verification of Real-Time Systems  

E-Print Network [OSTI]

IT Licentiate theses 2001-013 Practical Verification of Real-Time Systems ALEXANDRE DAVID UPPSALA UPPSALA SWEDEN Dissertation for the degree of Licentiate of Philosophy in Computer Science at Uppsala

David, Alexandre

Note: This page contains sample records for the topic "tracer interpretation verification" 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

IT Licentiate theses Practical Verification of RealTime Systems  

E-Print Network [OSTI]

IT Licentiate theses 2001≠013 Practical Verification of Real≠Time Systems ALEXANDRE DAVID UPPSALA UPPSALA SWEDEN Dissertation for the degree of Licentiate of Philosophy in Computer Science at Uppsala

David, Alexandre

222

INL/EXT-14-33201 RELAP-7 Software Verification  

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

01 RELAP-7 Software Verification and Validation Plan Curtis L. Smith Yong-Joon Choi Ling Zou September 25, 2014 NOTICE This report was prepared as an account of work sponsored by...

223

M&V Guidelines: Measurement and Verification for Federal Energy...  

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

M&V Guidelines: Measurement and Verifi cation for Federal Energy Projects Version 3.0 M&V Guidelines: Measurement and Verification for Federal Energy Projects Version 3.0 Prepared...

224

A Methodology for Automated Verification of Rosetta Specification Transformations  

E-Print Network [OSTI]

particular semantic vocabulary and modeling style. The following dissertation proposes a framework, semantics and methodology for automated verification of safety preservation over specification transformations between domains. Utilizing the ideas of lattice...

Lohoefener, Jennifer Lee

2011-04-11T23:59:59.000Z

225

Process Abstraction in the Verification of Temporal Properties†  

E-Print Network [OSTI]

as abstraction operations. We show that an abstract process satisfies a property expressed as a temporal logic formula just if the original process satisfies a transformed formula. We define various abstraction operators and illustrate their use in verification...

Bruns, Glen R

226

Estimates of Tracer-Based Piston-Flow Ages of Groundwater From Selected Sites: National Water-Quality Assessment  

E-Print Network [OSTI]

Estimates of Tracer-Based Piston-Flow Ages of Groundwater From Selected Sites: National Water;Estimates of Tracer-Based Piston-Flow Ages of Groundwater from Selected Sites: National Water.N., Busenberg, Eurybiades, Widman, P.K., Casile, G.C., and Wayland, J.E., 2010, Estimates of tracer-based piston

227

Verification and Validation of RADTRAN 5.5.  

SciTech Connect (OSTI)

This document contains a description of the verification and validation process used for the RADTRAN 5.5 code. The verification and validation process ensured the proper calculational models and mathematical and numerical methods were used in the RADTRAN 5.5 code for the determination of risk and consequence assessments. The differences between RADTRAN 5 and RADTRAN 5.5 are the addition of tables, an expanded isotope library, and the additional User-Defined meteorological option for accident dispersion. 3

Osborn, Douglas.; Weiner, Ruth F.; Mills, George Scott; Hamp, Steve C.

2005-02-01T23:59:59.000Z

228

Enhanced verification test suite for physics simulation codes  

SciTech Connect (OSTI)

This document discusses problems with which to augment, in quantity and in quality, the existing tri-laboratory suite of verification problems used by Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL), and Sandia National Laboratories (SNL). The purpose of verification analysis is demonstrate whether the numerical results of the discretization algorithms in physics and engineering simulation codes provide correct solutions of the corresponding continuum equations.

Kamm, James R.; Brock, Jerry S.; Brandon, Scott T.; Cotrell, David L.; Johnson, Bryan; Knupp, Patrick; Rider, William J.; Trucano, Timothy G.; Weirs, V. Gregory

2008-09-01T23:59:59.000Z

229

THE NEW YORK CITY URBAN DISPERSION PROGRAM MARCH 2005 FIELD STUDY: TRACER METHODS AND RESULTS.  

SciTech Connect (OSTI)

The Urban Dispersion Program March 2005 Field Study tracer releases, sampling, and analytical methods are described in detail. There were two days where tracer releases and sampling were conducted. A total of 16.0 g of six tracers were released during the first test day or Intensive Observation Period (IOP) 1 and 15.7 g during IOP 2. Three types of sampling instruments were used in this study. Sequential air samplers, or SAS, collected six-minute samples, while Brookhaven atmospheric tracer samplers (BATS) and personal air samplers (PAS) collected thirty-minute samples. There were a total of 1300 samples resulting from the two IOPs. Confidence limits in the sampling and analysis method were 20% as determined from 100 duplicate samples. The sample recovery rate was 84%. The integrally averaged 6-minute samples were compared to the 30-minute samples. The agreement was found to be good in most cases. The validity of using a background tracer to calculate sample volumes was examined and also found to have a confidence level of 20%. Methods for improving sampling and analysis are discussed. The data described in this report are available as Excel files. An additional Excel file of quality assured tracer data for use in model validation efforts is also available. The file consists of extensively quality assured BATS tracer data with background concentrations subtracted.

WATSON, T.B.; HEISER, J.; KALB, P.; DIETZ, R.N.; WILKE, R.; WIESER, R.; VIGNATO, G.

2005-10-01T23:59:59.000Z

230

Analysis of Injection-Backflow Tracer Tests in Fractured Geothermal Reservoirs  

SciTech Connect (OSTI)

Tracer tests have been an important technique for determining the flow and reservoir characteristics in various rock matrix systems. While the interwell tracer tests are aimed at the characterization of the regions between the wells, single-well injection-backflow tracer tests may be useful tools of preliminary evaluation, before implementing long term interwell tracer tests. This work is concerned with the quantitative evaluation of the tracer return profiles obtained from single well injection-backflow tracer tests. First, two mathematical models of tracer transport through fractures, have been reviewed. These two models are based on two different principles: Taylor Dispersion along the fracture and simultaneous diffusion in and out of the adjacent matrix. Then the governing equations for the transport during the injection-backflow tests have been solved. Finally the results were applied to field data obtained from Raft River and East Mesa geothermal fields. In order to determine the values of the parameters of the models that define the transport mechanisms through fractures a non-linear optimization technique was employed. 26 refs., 10 figs.

Kocabas, I.; Horne, R.N.

1987-01-20T23:59:59.000Z

231

Final report of the second dye-tracer test at the Chesnut Ridge Security Pits, Y-12 Plant, Oak Ridge, Tennessee  

SciTech Connect (OSTI)

Martin Marietta Energy Systems, Inc. (Energy Systems) manages a closed hazardous waste disposal unit, Chestnut Ridge Security Pits (CRSP), in the form of two trenches and several auger-holes, located on top of the eastern portion of Chestnut Ridge at the Department of Energy (DOE) Oak Ridge Y-12 Plant in Tennessee. The groundwater monitoring system for the unit presently consists of a network of upgradient and downgradient monitor wells. To investigate the discharge of groundwater to springs and streams, Energy Systems, through Geraghty and Miller, Inc., conducted an initial dye-tracer study during the driest part of 1990. The dye was detected at some of the monitoring sites, but verification was necessary due to the proximity of some sites to extraneous dye sources. Based on the results of the initial study, Energy Systems recommended to the Tennessee Department of Environment and Conservation (TDEC) in the 1990 Groundwater Quality Assessment Report (GWQAR) (HSW 1991) for the CRSP that a second dye-tracer study be conducted during the wet weather season. The procedures and materials were reviewed, and a field inspection of the monitoring sites was performed in the fall of 1991. The actual test commenced during the first week of February 1992 with a 4-week baseline monitoring period to determine the inherent variability of the emission spectra within the wavelength range characteristic of Rhodamine WT (RWT) and Fluorescent Brightener 28 (FB28) or similar naturally occuring compounds within in the aquifer. This is commonly referred as background in discussion of minimum detectable levels of dyes. On March 13, RWT and FB28 were injected; weekly monitoring began with the collection of the first set of detectors on March 19. The test was originally scheduled to conclude after 12 weeks but was extended to 18 weeks when no definitive results were obtained.

NONE

1992-11-01T23:59:59.000Z

232

THE BROOKHAVEN NATIONAL LABORATORY PERFLUOROCARBON TRACER TECHNOLOGY: A PROVEN AND COST EFFECTIVE METHOD TO VERIFY INTEGRITY AND MONITOR LONG TERM PERFORMANCE OF WALLS, FLOORS, CAPS, AND COVER SYSTEMS.  

SciTech Connect (OSTI)

Currently, containment system failures are detected by monitoring wells downstream of the waste site. Clearly this approach is inefficient, as the contaminants will have migrated from the disposal area before they are detected. Methods that indicate early cover failure (prior to contaminant release) or predict impending cover failure are needed. The Brookhaven National Laboratory (BNL) Perfluorocarbon Tracer (PFT) technology can measure performance changes and integrity losses as the cover ages. This allows early detection of cover failure or pending failure so that repair or replacement can be made before contaminants leave the disposal cell. The PFT technology has been successfully applied to four subsurface barrier problems, one leak detection problem from underground ducts, and one surface cover problem. Testing has demonstrated that the PFTs are capable of accurately detecting and locating leaks down to fractions of an inch. The PFT technology has several advantages over competing approaches. The ability to simultaneously use multiple PFTs separates it from other gas tracer technologies. Using multiple tracers provides independent confirmation of flaw location, helps to clearly define transport pathways, and can be used for confirmatory testing (e.g., repeat the test using a new tracer). The PFT tests provide a direct measure of flaws in a barrier, whereas other measurements (pressure, moisture content, temperature, subsidence) provide indirect measures that need interpretation. The focus of the six PFT demonstrations has been on engineering aspects of the technology with the intent of finding if a flaw existed in the barrier. Work remains to be done on the scientific basis for this technology. This includes determining PFT diffusion rates through various materials (soils and barrier) as a function of moisture content, determining the effects of barometric pumping on PFT flow for cover systems, and determining wind effects on side slopes of cover systems and their impact on PFT performance. It also includes application of models to assist in the design of the monitoring system and the interpretation of the data. The set of demonstrations was performed on small sites (< 1/4 acre). Future work also needs to consider scaling issues to develop and design optimal techniques for delivery and monitoring of the PFTs.

HEISER, J.; SULLIVAN, T.

2002-03-11T23:59:59.000Z

233

Tracers for monitoring the activity of sodium/glucose cotransporters in health and disease  

DOE Patents [OSTI]

Radiolabeled tracers for sodium/glucose cotransporters (SGLTs), their synthesis, and their use are provided. The tracers are methyl or ethyl pyranosides having an equatorial hydroxyl group at carbon-2 and a C 1 preferred conformation, radiolabeled with .sup.18F, .sup.123I, or .sup.124I, or free hexoses radiolabeled with .sup.18F, .sup.123I, or .sup.124. Also provided are in vivo and in vitro techniques for using these and other tracers as analytical and diagnostic tools to study glucose transport, in health and disease, and to evaluate therapeutic interventions.

Wright, Ernest M; Barrio, Jorge R; Hirayama, Bruce A; Kepe, Vladimir

2014-09-30T23:59:59.000Z

234

Environmental Tracers for Determining Water Resource Vulnerability to Climate Change  

SciTech Connect (OSTI)

Predicted changes in the climate will have profound impacts on water availability in the Western US, but large uncertainties exist in our ability to predict how natural and engineered hydrological systems will respond. Most predictions suggest that the impacts of climate change on California water resources are likely to include a decrease in the percentage of precipitation that falls as snow, earlier onset of snow-pack melting, and an increase in the number of rain on snow events. These processes will require changes in infrastructure for water storage and flood control, since much of our current water supply system is built around the storage of winter precipitation as mountain snow pack. Alpine aquifers play a critical role by storing and releasing snowmelt as baseflow to streams long after seasonal precipitation and the disappearance of the snow pack, and in this manner significantly impact the stream flow that drives our water distribution systems. Mountain groundwater recharge and, in particular, the contribution of snowmelt to recharge and baseflow, has been identified as a potentially significant effect missing from current climate change impact studies. The goal of this work is to understand the behavior of critical hydrologic systems, with an emphasis on providing ground truth for next generation models of climate-water system interactions by implementing LLNL capabilities in environmental tracer and isotopic science. We are using noble gas concentrations and multiple isotopic tracers ({sup 3}H/{sup 3}He, {sup 35}S, {sup 222}Rn, {sup 2}H/{sup 1}H, {sup 18}O/{sup 16}O, and {sup 13}C/{sup 12}C) in groundwater and stream water in a small alpine catchment to (1) provide a snapshot of temperature, altitude, and physical processes at the time of recharge, (2) determine subsurface residence times (over time scales ranging from months to decades) of different groundwater age components, and (3) deconvolve the contribution of these different groundwater components to alpine stream baseflow. This research is showing that groundwater in alpine areas spends between a few years to several decades in the saturated zone below the surface, before feeding into streams or being pumped for use. This lag time may act to reduce the impact on water resources from extreme wet or dry years. Furthermore, our measurements show that the temperature of water when it reaches the water table during recharge is 4 to 9 degrees higher than would be expected for direct influx of snowmelt, and that recharge likely occurs over diffuse vegetated areas, rather than along exposed rock faces and fractures. These discoveries have implications for how alpine basins will respond to climate effects that lead to more rain than snow and earlier snow pack melting.

Singleton, M

2009-07-08T23:59:59.000Z

235

Atmospheric and soil-gas monitoring for surface leakage at the San Juan Basin CO{sub 2} pilot test site at Pump Canyon New Mexico, using perfluorocarbon tracers, CO{sub 2} soil-gas flux and soil-gas hydrocarbons  

SciTech Connect (OSTI)

Near-surface monitoring and subsurface characterization activities were undertaken in collaboration with the Southwest Regional Carbon Sequestration Partnership on their San Juan Basin coal-bed methane pilot test site near Navajo City, New Mexico. Nearly 18,407 short tons (1.670 ◊ 107 kg) of CO{sub 2} were injected into 3 seams of the Fruitland coal between July 2008 and April 2009. Between September 18 and October 30, 2008, two additions of approximately 20 L each of perfluorocarbon (PFC) tracers were mixed with the CO{sub 2} at the injection wellhead. PFC tracers in soil-gas and in the atmosphere were monitored over a period of 2 years using a rectangular array of permanent installations. Additional monitors were placed near existing well bores and at other locations of potential leakage identified during the pre-injection site survey. Monitoring was conducted using sorbent containing tubes to collect any released PFC tracer from soil-gas or the atmosphere. Near-surface monitoring activities also included CO{sub 2} surface flux and carbon isotopes, soil-gas hydrocarbon levels, and electrical conductivity in the soil. The value of the PFC tracers was demonstrated when a significant leakage event was detected near an offset production well. Subsurface characterization activities, including 3D seismic interpretation and attribute analysis, were conducted to evaluate reservoir integrity and the potential that leakage of injected CO{sub 2} might occur. Leakage from the injection reservoir was not detected. PFC tracers made breakthroughs at 2 of 3 offset wells which were not otherwise directly observable in produced gases containing 20Ė30% CO{sub 2}. These results have aided reservoir geophysical and simulation investigations to track the underground movement of CO{sub 2}. 3D seismic analysis provided a possible interpretation for the order of appearance of tracers at production wells.

Wells, Arthur W.; Diehl, J. Rodney; Strazisar, Brian R.; Wilson, Thomas; H Stanko, Dennis C.

2012-05-01T23:59:59.000Z

236

Interim Letter Report - Verification Survey of Partial Grid E9, David Witherspoon, Inc. 1630 Site Knoxville, Tennessee  

SciTech Connect (OSTI)

Conduct verification surveys of available grids at the DWI 1630 in Knoxville, Tennessee. A representative with the Independent Environmental Assessment and Verification (IEAV) team from ORISE conducted a verification survey of a partial area within Grid E9.

P.C. Weaver

2008-06-12T23:59:59.000Z

237

Chemical tracers of episodic accretion in low-mass protostars  

E-Print Network [OSTI]

Aims: Accretion rates in low-mass protostars can be highly variable in time. Each accretion burst is accompanied by a temporary increase in luminosity, heating up the circumstellar envelope and altering the chemical composition of the gas and dust. This paper aims to study such chemical effects and discusses the feasibility of using molecular spectroscopy as a tracer of episodic accretion rates and timescales. Methods: We simulate a strong accretion burst in a diverse sample of 25 spherical envelope models by increasing the luminosity to 100 times the observed value. Using a comprehensive gas-grain network, we follow the chemical evolution during the burst and for up to 10^5 yr after the system returns to quiescence. The resulting abundance profiles are fed into a line radiative transfer code to simulate rotational spectra of C18O, HCO+, H13CO+, and N2H+ at a series of time steps. We compare these spectra to observations taken from the literature and to previously unpublished data of HCO+ and N2H+ 6-5 from th...

Visser, Ruud; Jorgensen, Jes K

2015-01-01T23:59:59.000Z

238

Tracer diffusion in compacted, water-saturated bentonite  

SciTech Connect (OSTI)

Compacted Na-bentonite clay barriers, widely used in theisolation of solid-waste landfills and other contaminated sites, havebeen proposed for a similar use in the disposal of high-level radioactivewaste. Molecular diffusion through the pore space in these barriers playsa key role in their performance, thus motivating recent measurements ofthe apparent diffusion coefficient tensor of water tracers in compacted,water-saturated Na-bentonites. In the present study, we introduce aconceptual model in which the pore space of water-saturated bentonite isdivided into 'macropore' and 'interlayer nanopore' compartments. Withthis model we determine quantitatively the relative contributions ofpore-network geometry (expressed as a geometric factor) and of thediffusive behavior of water molecules near montmorillonite basal surfaces(expressed as a contristivity factor) to the apparent diffusioncoefficient tensor. Our model predicts, in agreement with experiment,that the mean principal value of the apparent diffusion coefficienttensor follows a single relationship when plotted against the partialmontmorillonite dry density (mass of montmorillonite per combined volumeof montmorillonite and pore space). Using a single fitted parameter, themean principal geometric factor, our model successfully describes thisrelationship for a broad range of bentonite-water system, from dilute gelto highly-compacted bentonite with 80 percent of its pore water ininterlayer nanopores.

Bourg, Ian C.; Sposito, Garrison; Bourg, Alain C.M.

2005-08-04T23:59:59.000Z

239

CTBT Integrated Verification System Evaluation Model  

SciTech Connect (OSTI)

Sandia National Laboratories has developed a computer based model called IVSEM (Integrated Verification System Evaluation Model) to estimate the performance of a nuclear detonation monitoring system. The IVSEM project was initiated in June 1994, by Sandia`s Monitoring Systems and Technology Center and has been funded by the US Department of Energy`s Office of Nonproliferation and National Security (DOE/NN). IVSEM is a simple, top-level, modeling tool which estimates the performance of a Comprehensive Nuclear Test Ban Treaty (CTBT) monitoring system and can help explore the impact of various sensor system concepts and technology advancements on CTBT monitoring. One of IVSEM`s unique features is that it integrates results from the various CTBT sensor technologies (seismic, infrasound, radionuclide, and hydroacoustic) and allows the user to investigate synergy among the technologies. Specifically, IVSEM estimates the detection effectiveness (probability of detection) and location accuracy of the integrated system and of each technology subsystem individually. The model attempts to accurately estimate the monitoring system`s performance at medium interfaces (air-land, air-water) and for some evasive testing methods such as seismic decoupling. This report describes version 1.2 of IVSEM.

Edenburn, M.W.; Bunting, M.L.; Payne, A.C. Jr.

1997-10-01T23:59:59.000Z

240

Organics Verification Study for Sinclair and Dyes Inlets, Washington  

SciTech Connect (OSTI)

Sinclair and Dyes Inlets near Bremerton, Washington, are on the State of Washington 1998 303(d) list of impaired waters because of fecal coliform contamination in marine water, metals in sediment and fish tissue, and organics in sediment and fish tissue. Because significant cleanup and source control activities have been conducted in the inlets since the data supporting the 1998 303(d) listings were collected, two verification studies were performed to address the 303(d) segments that were listed for metal and organic contaminants in marine sediment. The Metals Verification Study (MVS) was conducted in 2003; the final report, Metals Verification Study for Sinclair and Dyes Inlets, Washington, was published in March 2004 (Kohn et al. 2004). This report describes the Organics Verification Study that was conducted in 2005. The study approach was similar to the MVS in that many surface sediment samples were screened for the major classes of organic contaminants, and then the screening results and other available data were used to select a subset of samples for quantitative chemical analysis. Because the MVS was designed to obtain representative data on concentrations of contaminants in surface sediment throughout Sinclair Inlet, Dyes Inlet, Port Orchard Passage, and Rich Passage, aliquots of the 160 MVS sediment samples were used in the analysis for the Organics Verification Study. However, unlike metals screening methods, organics screening methods are not specific to individual organic compounds, and are not available for some target organics. Therefore, only the quantitative analytical results were used in the organics verification evaluation. The results of the Organics Verification Study showed that sediment quality outside of Sinclair Inlet is unlikely to be impaired because of organic contaminants. Similar to the results for metals, in Sinclair Inlet, the distribution of residual organic contaminants is generally limited to nearshore areas already within the actively managed Puget Sound Naval Shipyard and Intermediate Maintenance Facility Superfund Site, where further source-control actions and monitoring are under way.

Kohn, Nancy P.; Brandenberger, Jill M.; Niewolny, Laurie A.; Johnston, Robert K.

2006-09-28T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Radium isotopes as tracers of coastal circulation pathways in the Mid-Atlantic Blight  

E-Print Network [OSTI]

Pathways of exchange between the shelf and slope in the Mid-Atlantic Bight were investigated using a combination of radiochemical tracer and hydrographic measurements. The motivation was to provide evidence of transport ...

Rasmussen, Linda L

2003-01-01T23:59:59.000Z

242

The use of tracers to analyze the effects of reinjection into fractured geothermal reservoirs  

SciTech Connect (OSTI)

This paper discusses the use of tracers as a reservoir engineering tool in fractured geothermal reservoirs. The principle concern in injecting cooler spent fluids into a fractured reservoir is that the fluids may move through high permeability channels and return to the production wells after contacting a relatively small volume of rock. As a consequence of this rapid transport, the fluids will be only partially reheated and after a short period time will effectively mine the heat from the limited volume of rock. The production wells will then experience a rapid and premature reduction in thermal output. Tracers can be used to infer the existence of high mobility conduits between injection and production wells and to monitor chemical changes of an injected fluid. Since tracer arrival precedes thermal breakthrough, tracer tests are a very useful forecasting tool.

Horne, R.N.; Johns, R.A.; Adams, M.C.; Moore, J.N.; Stiger, S.G.

1987-01-01T23:59:59.000Z

243

Dynamic Reservoir Characterization Of Naturally Fractured Reservoirs From An Inter-Well Tracer Test  

E-Print Network [OSTI]

After field redevelopment in the Sherrod Unit of the Spraberry Trend Area, an inter-well tracer test was conducted at the field scale in order to understand the fracture system, which forms preferential flow paths for better management...

Kilicaslan, Ufuk

2013-12-03T23:59:59.000Z

244

Author's personal copy Thorium-234 as a tracer of spatial, temporal and vertical variability  

E-Print Network [OSTI]

Author's personal copy Thorium-234 as a tracer of spatial, temporal and vertical variability 2009 Accepted 6 April 2009 Available online 16 April 2009 Keywords: Thorium-234 Particle flux Sediment

Buesseler, Ken

245

CHEMICAL TRACER RETENTION IN POROUS MEDIA Submitted to the Department of Petroleum Engineering  

E-Print Network [OSTI]

* CHEMICAL TRACER RETENTION IN POROUS MEDIA A Report Submitted to the Department of Petroleum Engineering of Stanford University in Fulfillment of the Requirement for the Degree of Master of Science

Stanford University

246

Mobile Pit verification system design based on passive special nuclear material verification in weapons storage facilities  

SciTech Connect (OSTI)

A mobile 'drive by' passive radiation detection system to be applied in special nuclear materials (SNM) storage facilities for validation and compliance purposes has been designed through the use of computational modeling and new radiation detection methods. This project was the result of work over a 1 year period to create optimal design specifications to include creation of 3D models using both Monte Carlo and deterministic codes to characterize the gamma and neutron leakage out each surface of SNM-bearing canisters. Results were compared and agreement was demonstrated between both models. Container leakages were then used to determine the expected reaction rates using transport theory in the detectors when placed at varying distances from the can. A 'typical' background signature was incorporated to determine the minimum signatures versus the probability of detection to evaluate moving source protocols with collimation. This established the criteria for verification of source presence and time gating at a given vehicle speed. New methods for the passive detection of SNM were employed and shown to give reliable identification of age and material for highly enriched uranium (HEU) and weapons grade plutonium (WGPu). The finalized 'Mobile Pit Verification System' (MPVS) design demonstrated that a 'drive-by' detection system, collimated and operating at nominally 2 mph, is capable of rapidly verifying each and every weapon pit stored in regularly spaced, shelved storage containers, using completely passive gamma and neutron signatures for HEU and WGPu. This system is ready for real evaluation to demonstrate passive total material accountability in storage facilities. (authors)

Paul, J. N.; Chin, M. R.; Sjoden, G. E. [Nuclear and Radiological Engineering Program, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 770 State St, Atlanta, GA 30332-0745 (United States)

2013-07-01T23:59:59.000Z

247

Glass mixing theory and tracer study results from the SF-10 run  

SciTech Connect (OSTI)

A general, partial differential equation governing glass mixing in the Slurry Fed Ceramic Melter (SFCM) was derived and a solution obtained based upon certain simplifying assumptions. Tracer studies were then conducted in the SFCM during the SF-10 run to test the theory and characterize glass mixing in this melter. Analysis of the tracer data shows that glass mixing in the SFCM can be explained by use of a model of two, well-mixed tanks in series.

Bowman, B.W.; Routt, K.R.

1988-08-01T23:59:59.000Z

248

Structure and Interpretation of Computer Programs  

E-Print Network [OSTI]

"The Structure and Interpretation of Computer Programs" is the entry-level subject in Computer Science at the Massachusetts Institute of Technology. It is required of all students at MIT who major in Electrical ...

Abelson, Harold

1983-07-01T23:59:59.000Z

249

Bernard Williams's Internalism: A New Interpretation  

E-Print Network [OSTI]

There has been significant and continued debate over the nature and truth of Bernard Williamsís internalism. My aim is to resolve much of the dispute over both of those issues by providing a new interpretation of his ...

Baize, Micah J.

2012-05-31T23:59:59.000Z

250

Generating and interpreting referring expressions in context  

E-Print Network [OSTI]

Referring expressions with vague and ambiguous modifiers, such as "a quick visit" and "the big meeting," are difficult for computers to interpret because their meanings are defined in part by context. For the hearer to ...

Smith, Dustin Arthur

2013-01-01T23:59:59.000Z

251

Recreation/Tourism/Interpretation Graduate Schools  

E-Print Network [OSTI]

Recreation/Tourism/Interpretation Graduate Schools Brigham Young University Provo, Utah, Recreation and Tourism Management http://www.hehd.clemson.edu/PRTM/mprtm.htm Colorado State University Programs: Natural Resource Recreation Tourism and Commercial Recreation Campus Recreation, Programming

252

Lťvy Fluctuations and Tracer Diffusion in Dilute Suspensions of Algae and Bacteria  

E-Print Network [OSTI]

Swimming microorganisms rely on effective mixing strategies to achieve efficient nutrient influx. Recent experiments, probing the mixing capability of unicellular biflagellates, revealed that passive tracer particles exhibit anomalous non-Gaussian diffusion when immersed in a dilute suspension of self-motile Chlamydomonas reinhardtii algae. Qualitatively, this observation can be explained by the fact that the algae induce a fluid flow that may occasionally accelerate the colloidal tracers to relatively large velocities. A satisfactory quantitative theory of enhanced mixing in dilute active suspensions, however, is lacking at present. In particular, it is unclear how non-Gaussian signatures in the tracers' position distribution are linked to the self-propulsion mechanism of a microorganism. Here, we develop a systematic theoretical description of anomalous tracer diffusion in active suspensions, based on a simplified tracer-swimmer interaction model that captures the typical distance scaling of a microswimmer's flow field. We show that the experimentally observed non-Gaussian tails are generic and arise due to a combination of truncated L\\'evy statistics for the velocity field and algebraically decaying time correlations in the fluid. Our analytical considerations are illustrated through extensive simulations, implemented on graphics processing units to achieve the large sample sizes required for analyzing the tails of the tracer distributions.

Irwin M. Zaid; JŲrn Dunkel; Julia M. Yeomans

2010-09-20T23:59:59.000Z

253

Temporal Dependency based Checkpoint Selection for Dynamic Verification of Fixed-time Constraints  

E-Print Network [OSTI]

.4 [Software Engineering]: Software/Program Verification. General Term Algorithms, Design, Reliability, Theory strategy, the corresponding unnecessary verification can be avoided. The comparison and experimental simulation further demonstrate that our new strategy can improve the efficiency of overall temporal

Yang, Yun

254

VERIFICATION BASED ECG BIOMETRICS WITH CARDIAC IRREGULAR CONDITIONS USING HEARTBEAT LEVEL AND SEGMENT LEVEL INFORMATION FUSION  

E-Print Network [OSTI]

VERIFICATION BASED ECG BIOMETRICS WITH CARDIAC IRREGULAR CONDITIONS USING HEARTBEAT LEVEL propose an ECG based robust human verification system for both healthy and cardiac irregular conditions% relatively on the PTB database. Index Terms-- ECG biometrics, beat normalization, outlier re- moval

Li, Xin

255

A semi-analytical model for heat and mass transfer in geothermal reservoirs to estimate fracture surface-are-to-volume ratios and thermal breakthrough using thermally-decaying and diffusing tracers  

SciTech Connect (OSTI)

A semi-analytical model was developed to conduct rapid scoping calculations of responses of thermally degrading and diffusing tracers in multi-well tracer tests in enhanced geothermal systems (EGS). The model is based on an existing Laplace transform inversion model for solute transport in dual-porosity media. The heat- and mass-transfer calculations are decoupled and conducted sequentially, taking advantage of the fact that heat transfer between fractures and the rock matrix is much more rapid than mass transfer and therefore mass transfer will effectively occur in a locally isothermal system (although the system will be nonisothermal along fracture flow pathways, which is accounted for by discretizing the flow pathways into multiple segments that have different temperature histories). The model takes advantage of the analogies between heat and mass transfer, solving the same governing equations with k{sub m}/({rho}C{sub p}){sub w} being substituted for {phi}D{sub m} in the equation for fracture transport and k{sub m}/({rho}C{sub p}){sub m} being subsituted for D{sub m} in the equation for matrix transport; where k = thermal conductivity (cal/cm-s-K), {rho} = density (g/cm{sup 3}), C{sub p} = heat capacity (at constant pressure) (cal/g-K), {phi} = matrix porosity, and D = tracer diffusion coefficient (cm{sup 2}/s), with the subscripts w and m referring to water and matrix, respectively. A significant advantage of the model is that it executes in a fraction of second on a single-CPU personal computer, making it very amenable for parameter estimation algorithms that involve repeated runs to find global minima. The combined thermal-mass transport model was used to evaluate the ability to estimate when thermal breakthrough would occur in a multi-well EGS configuration using thermally degrading tracers. Calculations were conducted to evaluate the range of values of Arrhenius parameters, A and E{sub {alpha}} (pre-exponential factor, 1/s, and activation energy, cal/mol) required to obtain interpretable responses of thermally-degrading tracers that decay according to the rate constant k{sub d} = Ae{sup -E{sub {alpha}}/RT}, where k{sub d} = decay rate constant (1/s), R = ideal gas constant (1.987 cal/mol-K), and T = absolute temperature (K). It is shown that there are relatively narrow ranges of A and E{sub {alpha}} that will result in readily interpretable tracer responses for any given combination of ambient reservoir temperature and working fluid residence time in a reservoir. The combined model was also used to simulate the responses of conservative tracers with different diffusion coefficients as a way of estimating fracture surface-area-to-volume ratios (SA/V) in multi-well EGS systems. This method takes advantage of the fact that the differences in breakthrough curves of tracers with different matrix diffusion coefficients are a function of SA/V. The model accounts for differences in diffusion coefficients as a function of temperature so that tracer responses obtained at different times can be used to obtain consistent estimates of SA/V as the reservoir cools down. Some single-well applications of this approach are simulated with a numerical model to demonstrate the potential to evaluate the effectiveness of EGS stimulations before a second well is drilled.

Reimus, Paul W [Los Alamos National Laboratory

2010-12-08T23:59:59.000Z

256

Comment submitted by Hobart/ITW Food Equipment Group regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by Hobart/ITW Food Equipment Group regarding the Energy Star Verification Testing Program

257

Comment submitted by BSH Home Appliances Corporation regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by BSH Home Appliances Corporation regarding the Energy Star Verification Testing Program

258

Comment submitted by CertainTeed Corporation regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by CertainTeed Corporation regarding the Energy Star Verification Testing Program

259

Comment submitted by the Natural Resources Defense Council (NRDC) regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by the Natural Resources Defense Council (NRDC) regarding the Energy Star Verification Testing Program

260

Efficient Methods for Practical Fully-Homomorphic Symmetric-key Encryption, Randomization, and Verification  

E-Print Network [OSTI]

, and Verification Aviad Kipnis akipnis@nds.com; Eli Hibshoosh ehibshoo@nds.com Abstract We present high performance

Note: This page contains sample records for the topic "tracer interpretation verification" 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

E-Print Network 3.0 - attribute verification system Sample Search...  

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

systems for generation "attributes": those characteristics of a power plant's production... , electricity markets are devising accounting and verification systems for...

262

Comment submitted by Hoshizaki America, Inc. regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by Hoshizaki America, Inc. regarding the Energy Star Verification Testing Program

263

EECLP Webinar #2: Quality Assurance and Evaluation Monitoring Verification-- Text Version  

Broader source: Energy.gov [DOE]

Below is the text version of the EECLP Webinar #2: Quality Assurance and Evaluation Monitoring Verification, presented in December 2014.

264

Comment submitted by Energizer Battery Manufacturing, Inc. regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by Energizer Battery Manufacturing, Inc. regarding the Energy Star Verification Testing Program

265

Comment submitted by United Lighting, Inc. regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by United Lighting, Inc. regarding the Energy Star Verification Testing Program

266

Comment submitted by A. O. Smith Corporation regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by A. O. Smith Corporation regarding the Energy Star Verification Testing Program

267

Comment submitted by the Alliance for Water Efficiency (AWE) regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by the Alliance for Water Efficiency (AWE) regarding the Energy Star Verification Testing Program

268

INDEPENDENT VERIFICATION REVIEW AND SURVEY of the Argonne National Laboratory Building 301 Footprint  

SciTech Connect (OSTI)

INDEPENDENT VERIFICATION REVIEW AND SURVEY of the Argonne National Laboratory Building 301 Footprint, Argonne Illinois 5061-SR-01-0

E.N. Bailey

2010-05-26T23:59:59.000Z

269

Independent Verification Survey Report for the Long Island Solar Farm, Brookhaven National Laboratory, Upton, New York  

SciTech Connect (OSTI)

5119-SR-01-0 INDEPENDENT VERIFICATION SURVEY REPORT FOR THE LONG ISLAND SOLAR FARM, BROOKHAVEN NATIONAL LABORATORY

E.M. Harpenau

2010-11-15T23:59:59.000Z

270

Verification and validation of RADMODL Version 1.0  

SciTech Connect (OSTI)

RADMODL is a system of linked computer codes designed to calculate the radiation environment following an accident in which nuclear materials are released. The RADMODL code and the corresponding Verification and Validation (V&V) calculations (Appendix A), were developed for Westinghouse Savannah River Company (WSRC) by EGS Corporation (EGS). Each module of RADMODL is an independent code and was verified separately. The full system was validated by comparing the output of the various modules with the corresponding output of a previously verified version of the modules. The results of the verification and validation tests show that RADMODL correctly calculates the transport of radionuclides and radiation doses. As a result of this verification and validation effort, RADMODL Version 1.0 is certified for use in calculating the radiation environment following an accident.

Kimball, K.D.

1993-03-01T23:59:59.000Z

271

A Zero Knowledge Protocol For Nuclear Warhead Verification  

SciTech Connect (OSTI)

The verification of nuclear warheads for arms control faces a paradox: International inspectors must gain high confidence in the authenticity of submitted items while learning nothing about them. Conventional inspection systems featuring ''information barriers'', designed to hide measurments stored in electronic systems, are at risk of tampering and snooping. Here we show the viability of fundamentally new approach to nuclear warhead verification that incorporates a zero-knowledge protocol, designed such that sensitive information is never measured so does not need to be hidden. We interrogate submitted items with energetic neutrons, making in effect, differential measurements of neutron transmission and emission. Calculations of diversion scenarios show that a high degree of discrimination can be achieved while revealing zero information. Timely demonstration of the viability of such an approach could be critical for the nexxt round of arms-control negotiations, which will likely require verification of individual warheads, rather than whole delivery systems.

Glaser, Alexander [Princeton, Univ., NJ (United States). Program on Science and Global Security] [Princeton, Univ., NJ (United States). Program on Science and Global Security; Goldston, Robert J. [Princeton Plasma Physics Lab., Princeton, NJ (United States)] [Princeton Plasma Physics Lab., Princeton, NJ (United States)

2014-03-14T23:59:59.000Z

272

Converter performance TFE Verification Program. Final test report  

SciTech Connect (OSTI)

This report details TFE Verification Program, the objective, of which is to demonstrate the technology readiness of a TFE suitable for use as the basic element in a thermionic reactor with electric power output in the 0.5 to 5.0 MW(e) range, and a full-power life of 7 years. The TFE Verification Program built directly on the technology and data base developed in the 1960s and early 1970s in an AEC/NASA program, and in the SP-100 program conducted in 1983, 1984 and 1985. In the SP-100 program, the attractive features of thermionic power conversion technology were recognized but concern was expressed over the lack of fast reactor irradiation data. The TFE Verification Program addressed that concern.

Not Available

1994-03-01T23:59:59.000Z

273

Bibliography for Verification and Validation in Computational Simulations  

SciTech Connect (OSTI)

A bibliography has been compiled dealing with the verification and validation of computational simulations. The references listed in this bibliography are concentrated in the field of computational fluid dynamics (CFD). However, references from the following fields are also included: operations research, heat transfer, solid dynamics, software quality assurance, software accreditation, military systems, and nuclear reactor safety. This bibliography, containing 221 references, is not meant to be comprehensive. It was compiled during the last ten years in response to the author's interest and research in the methodology for verification and validation. The emphasis in the bibliography is in the following areas: philosophy of science underpinnings, development of terminology and methodology, high accuracy solutions for CFD verification, experimental datasets for CFD validation, and the statistical quantification of model validation. This bibliography should provide a starting point for individual researchers in many fields of computational simulation in science and engineering.

Oberkampf, W.L.

1998-10-01T23:59:59.000Z

274

Formal verification of complex properties on PLC programs  

E-Print Network [OSTI]

Formal verification has become a recommended practice in the safety-critical application areas. However, due to the complexity of practical control and safety systems, the state space explosion often prevents the use of formal analysis. In this paper we extend our former verification methodology with effective property preserving reduction techniques. For this purpose we developed general rule-based reductions and a customized version of the Cone of Influence (COI) reduction. Using these methods, the verification of complex requirements formalised with temporal logics (e.g. CTL, LTL) can be orders of magnitude faster. We use the NuSMV model checker on a real-life PLC program from CERN to demonstrate the performance of our reduction techniques.

Darvas, D; Voros, A; Bartha, T; Blanco Vinuela, E; Gonzalez Suarez, V M

2014-01-01T23:59:59.000Z

275

Under consideration for publication in Formal Aspects of Computing Specification and verification challenges for  

E-Print Network [OSTI]

and verification challenges as we see them today. We draw on our experience with specifying and verifying code], and static checking and verification tools for these [BCD+ 06, FLL+ 02, CK05]. While we do not claim in ESC/Java [FLL+ 02, LSS99, CK05] and other tools geared to the verification of Java-like programs [BCD

Leino, K. Rustan M.

276

Verification for measurement-only blind quantum computing  

E-Print Network [OSTI]

Blind quantum computing is a new secure quantum computing protocol where a client who does not have any sophisticated quantum technlogy can delegate her quantum computing to a server without leaking any privacy. It is known that a client who has only a measurement device can perform blind quantum computing [T. Morimae and K. Fujii, Phys. Rev. A {\\bf87}, 050301(R) (2013)]. It has been an open problem whether the protocol can enjoy the verification, i.e., the ability of client to check the correctness of the computing. In this paper, we propose a protocol of verification for the measurement-only blind quantum computing.

Tomoyuki Morimae

2014-06-19T23:59:59.000Z

277

MACCS2 development and verification efforts  

SciTech Connect (OSTI)

MACCS2 represents a major enhancement of the capabilities of its predecessor MACCS, the MELCOR Accident Consequence Code System. MACCS, released in 1987, was developed to estimate the potential impacts to the surrounding public of severe accidents at nuclear power plants. The principal phenomena considered in MACCS/MACCS2 are atmospheric transport and deposition under time-variant meteorology, short-term and long-term mitigative actions and exposure pathways, deterministic and stochastic health effects, and economic costs. MACCS2 was developed as a general-purpose analytical tool applicable to diverse reactor and nonreactor facilities. The MACCS2 package includes three primary enhancements: (1) a more flexible emergency response model, (2) an expanded library of radionuclides, and (3) a semidynamic food-chain model. In addition, errors that had been identified in MACCS version1.5.11.1 were corrected, including an error that prevented the code from providing intermediate-phase results. MACCS2 version 1.10 beta test was released to the beta-test group in May, 1995. In addition, the University of New Mexico (UNM) has completed an independent verification study of the code package. Since the beta-test release of MACCS2 version 1.10, a number of minor errors have been identified and corrected, and a number of enhancements have been added to the code package. The code enhancements added since the beta-test release of version 1.10 include: (1) an option to allow the user to input the {sigma}{sub y} and {sigma}{sub z} plume expansion parameters in a table-lookup form for incremental downwind distances, (2) an option to define different initial dimensions for up to four segments of a release, (3) an enhancement to the COMIDA2 food-chain model preprocessor to allow the user to supply externally calculated tables of tritium food-chain dose per unit deposition on farmland to support analyses of tritium releases, and (4) the capability to calculate direction-dependent doses.

Young, M.; Chanin, D.

1997-03-01T23:59:59.000Z

278

Laboratory testing and modeling to evaluate perfluorocarbon compounds as tracers in geothermal systems  

SciTech Connect (OSTI)

The thermal stability and adsorption characteristics of three perfluorinated hydrocarbon compounds were evaluated under geothermal conditions to determine the potential to use these compounds as conservative or thermally-degrading tracers in Engineered (or Enhanced) Geothermal Systems (EGS). The three compounds tested were perfluorodimethyl-cyclobutane (PDCB), perfluoromethylcyclohexane (PMCH), and perfluorotrimethylcyclohexane (PTCH), which are collectively referred to as perfluorinated tracers, or PFTs. Two sets of duplicate tests were conducted in batch mode in gold-bag reactors, with one pair of reactors charged with a synthetic geothermal brine containing the PFTs and a second pair was charged with the brine-PFT mixture plus a mineral assemblage chosen to be representative of activated fractures in an EGS reservoir. A fifth reactor was charged with deionized water containing the three PFTs. The experiments were conducted at {approx}100 bar, with temperatures ranging from 230 C to 300 C. Semi-analytical and numerical modeling was also conducted to show how the PFTs could be used in conjunction with other tracers to interrogate surface area to volume ratios and temperature profiles in EGS reservoirs. Both single-well and cross-hole tracer tests are simulated to illustrate how different suites of tracers could be used to accomplish these objectives. The single-well tests are especially attractive for EGS applications because they allow the effectiveness of a stimulation to be evaluated without drilling a second well.

Reimus, Paul W [Los Alamos National Laboratory

2011-01-21T23:59:59.000Z

279

Results of injection and tracer tests in Olkaria north east field in Kenya  

SciTech Connect (OSTI)

Tracer and injection tests were performed in the Olkaria North East Field with the objective to reduce uncertainty in the engineering design and to determine the suitability of well OW-704 as a re-injection well for the waste brine from the steam field during production. An organic dye (sodium fluorescein) was injected into well OW-704 as a slug. The tracer returns were observed in well OW-M2 which is 580 m deep, 620 m from well OW-704 and well OW-716 which is 900 m from well OW-704. The other wells on discharge, OW-714, and OW-725 did not show any tracer returns. However, other chemical constituents suggested., that well OW-716 experienced a chemical breakthrough earlier than OW-M2. Tracer return velocities of 0.31 m/hr and 1.3 m/hr were observed. Results of the tracer and injection tests indicate that OW-704 may be used as a re-injection well provided a close monitoring program is put in place.

Karingithi, C.W. [Kenya Power Company Ltd., Naivasha (Kenya)

1995-12-31T23:59:59.000Z

280

Advancing reactive tracer methods for measuring thermal evolution in CO2-and water-based geothermal reservoirs  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. This project aims to develop reactive tracer method for monitoring thermal drawdown in enhanced geothermal systems.

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Precise Dynamic Verification of Noninterference Gurvan Le Guernic  

E-Print Network [OSTI]

Precise Dynamic Verification of Noninterference Gurvan Le Guernic INRIA-MSR - Parc Orsay Universit analysis is used to analyze some un- executed pieces of code in order to take into account all types is that nowadays it is nearly impossible for consumers to prevent the execution of "bad" code on their devices

Paris-Sud XI, Université de

282

A STROKE BASED ALGORITHM FOR DYNAMIC SIGNATURE VERIFICATION  

E-Print Network [OSTI]

A STROKE BASED ALGORITHM FOR DYNAMIC SIGNATURE VERIFICATION Tong Qu, Abdulmotaleb El Saddik, Andy a novel stroke-based algorithm for DSV. An algorithm is developed to convert sample signatures of individual strokes. Individual strokes are identified by finding the points where there is a 1) decrease

Adler, Andy

283

Exploring Reliability for Automatic Identity Verification with Statistical Shape Models  

E-Print Network [OSTI]

Exploring Reliability for Automatic Identity Verification with Statistical Shape Models Federico M reliability measure of the result. In fact, the segmentation process is One ofthe drawbacks ofstatistical to a wrong result [4]. generic reliability measure for statistical shape models. It This problem

Frangi, Alejandro

284

Cleanup Verification Package for the 118-F-6 Burial Ground  

SciTech Connect (OSTI)

This cleanup verification package documents completion of remedial action for the 118-F-6 Burial Ground located in the 100-FR-2 Operable Unit of the 100-F Area on the Hanford Site. The trenches received waste from the 100-F Experimental Animal Farm, including animal manure, animal carcasses, laboratory waste, plastic, cardboard, metal, and concrete debris as well as a railroad tank car.

H. M. Sulloway

2008-10-02T23:59:59.000Z

285

Contracts for Model Execution Verification Eric Cariou1  

E-Print Network [OSTI]

Contracts for Model Execution Verification Eric Cariou1 , Cyril Ballagny2 , Alexandre Feugas3 a contract-based approach to specify an execution semantics for a meta-model. We show that an execution model transformation contracts for controlling the dynamic con- sistent evolution of a model during its

Paris-Sud XI, Université de

286

Getting Out of the Way Safety Verification without Compromise  

E-Print Network [OSTI]

verification of adaptive cruise control algorithms require both discrete braking modes and overly conservative conditions for adaptive cruise control algorithms that do not require discontinuous braking and also allow ∑ Assume global upper and lower braking bounds ∑ Assume worst-case scenario (WCS) ≠ Leader uses strongest

Sivilotti, Paul

287

STATE OF CALIFORNIA LOW LEAKAGE AIR HANDLER VERIFICATION  

E-Print Network [OSTI]

or heat pump fan and inside coil) must be certified to the Commission to leak 2 percent or less of its in the dwelling as applicable. System Name or Identification/Tag System Location or Area Served LLAH Unit Make LLAH Unit Model The LLAH must be connected to a New Duct System that meets the HERS verification

288

Self-adaptive software needs quantitative verification at Radu Calinescu  

E-Print Network [OSTI]

, performance and operating cost (e.g., energy consumption) of software. These techniques include model checkingSelf-adaptive software needs quantitative verification at runtime Radu Calinescu Department 1: The world and the machine. [19, 30]. In contrast, several mathematically-based modelling

Oxford, University of

289

Self-adaptive software needs quantitative verification at Radu Calinescu  

E-Print Network [OSTI]

, performance and operating cost (e.g., energy consumption) of software. These techniques include model checkingSelf-adaptive software needs quantitative verification at runtime Radu Calinescu Department"#.&*#.+$ Figure 1: The world and the machine. [19, 30]. In contrast, several mathematically-based modelling

Paris-Sud XI, Université de

290

Verification of Network Management System Configurations David L. Cohrs  

E-Print Network [OSTI]

, with the use of simple, ad hoc tools. However in a large network, managing the net- work management system the amount of sharing and coordination possible in configuring the net- work management system. EachVerification of Network Management System Configurations David L. Cohrs (608) 262-6617 dave

Miller, Barton P.

291

3D Scanning for Biometric Identification and Verification  

E-Print Network [OSTI]

June 2010 3D Scanning for Biometric Identification and Verification Project Leads Anselmo Lastra visibility, cannot be controlled. A relatively new biometric, 3D facial recognition, holds great promise performance using 3D shape and texture matched that of the much more mature technologies of high

McShea, Daniel W.

292

Automated Verification of Practical Garbage Collectors Chris Hawblitzel  

E-Print Network [OSTI]

Automated Verification of Practical Garbage Collectors Chris Hawblitzel Microsoft Research One Technion Haifa 32000 Israel erez@cs.technion.ac.il Abstract Garbage collectors are notoriously hard in reasoning about reachability in graphs. Several papers have presented verified collectors, but either

Petrank, Erez

293

Verification of Data-Aware Commitment-Based Multiagent System  

E-Print Network [OSTI]

on the dynamics of such systems, and on the evolution of their commitments. This requires to lift the commitment I.2.11 [Artificial Intelligence]: Distributed Artificial Intelligence--Multiagent Systems; D.2Verification of Data-Aware Commitment-Based Multiagent System Marco Montali Diego Calvanese KRDB

De Giacomo, Giuseppe

294

Neptunium flow-sheet verification at reprocessing plants  

SciTech Connect (OSTI)

Due to their fissile nature, neptunium and americium have at least a theoretical potential application as nuclear explosives and their proliferation potential was considered by the IAEA in studies in the late 1990's. This work was motivated by an increased awareness of the proliferation potential of americium and neptunium and a number of emerging projects in peaceful nuclear programmes which could result in an increase in the available quantities of these minor actinides. The studies culminated in proposals for various voluntary measures including the reporting of international transfers of separated americium and neptunium, declarations concerning the amount of separated neptunium and americium held by states and the application of flow-sheet verification to ensure that facilities capable of separating americium or neptunium are operated in a manner consistent with that declared. This paper discusses the issue of neptunium flowsheet verification in reprocessing plants. The proliferation potential of neptunium is first briefly discussed and then the chemistry of neptunium relevant to reprocessing plants described with a view to indicating a number of issues relevant to the verification of neptunium flow-sheets. Finally, the scope of verification activities is discussed including analysis of process and engineering design information, plant monitoring and sampling and the potential application of containment and surveillance measures. (authors)

Rance, P.; Chesnay, B.; Killeen, T.; Murray, M.; Nikkinen, M.; Petoe, A.; Plumb, J.; Saukkonen, H. [International Atomic Energy Agency, Wagramer Strasse 5, P.O. Box 100, A-1400 Vienna (Austria)

2007-07-01T23:59:59.000Z

295

Verification of Parallel Garbage Collection by Abstract Model Checking  

E-Print Network [OSTI]

have a finite state space provided that the abstraction mapping is powerful. M¨uller and Nipkow's work working on abstract model checking. In Section 4, the abstractions we defined on garbage #12; collectionVerification of Parallel Garbage Collection by Abstract Model Checking (Extended Abstract) Masami

Hagiya, Masami

296

Fast Verification of Wind Turbine Power Summary of Project Results  

E-Print Network [OSTI]

Fast Verification of Wind Turbine Power Curves: Summary of Project Results by: Cameron Brown ¬≠ s equation on high frequency wind turbine measurement data sampled at one sample per second or more. The aim's Nordtank wind turbine at the Ris√ł site, the practical application of this new method was tested

297

Department of Computing CSP||B modelling for railway verification  

E-Print Network [OSTI]

University of Surrey Department of Computing Computing Sciences Report CS-12-03 CSP||B modelling Schneider Helen Treharne March 30th 2012 #12;CSP||B modelling for railway verification: the double junction work in verifying railway systems through CSP k B modelling and analysis. In particular we consider

Doran, Simon J.

298

Combining Tools for the Verification of FaultTolerant Systems  

E-Print Network [OSTI]

and verification of fault≠tolerant systems according to the invent&verify paradigm. Our method is based on the CSP specifications (CSP process terms), refinement relations or combinations of these three description formalisms specification paradigms ac≠ cording to the specific needs of each development step is essential to cope

Peleska, Jan - Fachbereich 3

299

2012 -2013 BIRTH DATE VERIFICATION STUDENT NAME: SPU ID  

E-Print Network [OSTI]

an official copy of your Birth Certificate, Passport, or Driver's License with this form and we will update2012 - 2013 BIRTH DATE VERIFICATION STUDENT NAME: SPU ID: The date of birth reported on your Free Application for Federal Student Aid (FAFSA) does not match the date of birth reported in one of the following

Nelson, Tim

300

2013 -2014 BIRTH DATE VERIFICATION STUDENT NAME: SPU ID  

E-Print Network [OSTI]

an official copy of your Birth Certificate, Passport, or Driver's License with this form and we will update2013 - 2014 BIRTH DATE VERIFICATION STUDENT NAME: SPU ID: The date of birth reported on your Free Application for Federal Student Aid (FAFSA) does not match the date of birth reported in one of the following

Nelson, Tim

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Parameterized Specification and Verification of PLC Systems in Coq  

E-Print Network [OSTI]

Parameterized Specification and Verification of PLC Systems in Coq Hai Wan D.CST, Tsinghua and verify PLC software systems with the theorem proving system Coq. Dependent inductive data types are har to cope with this situation, modular development of PLC software is adopted. During the modular

Boyer, Edmond

302

Improving large-sized PLC programs verification using abstractions  

E-Print Network [OSTI]

Improving large-sized PLC programs verification using abstractions V. Gourcuff O. de Smet J [2005]) models of PLC programs, which can be verified with well- known model-checkers, like UPPAAL the development of industrial PLC programs up to now (John- son [2007]). Several reasons can explain

Paris-Sud XI, Université de

303

Venus: Verification for Untrusted Cloud Storage Alexander Shraer  

E-Print Network [OSTI]

Venus: Verification for Untrusted Cloud Storage Alexander Shraer Dept. of Electrical Engineering, Switzerland cca@zurich.ibm.com Asaf Cidon Dept. of Electrical Engineering Technion, Haifa, Israel asaf@cidon.com Idit Keidar Dept. of Electrical Engineering Technion, Haifa, Israel idish@ee.technion.ac.il Yan

Keidar, Idit

304

HEALTH AND ACCIDENT INSURANCE VERIFICATION ******************** TO BE COMPLETED BY STUDENT ********************  

E-Print Network [OSTI]

HEALTH AND ACCIDENT INSURANCE VERIFICATION ******************** TO BE COMPLETED BY STUDENT Services Office of the university of Florida requires that s/he has health and accident insurance with your participating in study abroad activate hold health and accident insurance with a minimum coverage of $200

Jawitz, James W.

305

FORECAST VERIFICATION OF EXTREMES: USE OF EXTREME VALUE THEORY  

E-Print Network [OSTI]

1 FORECAST VERIFICATION OF EXTREMES: USE OF EXTREME VALUE THEORY Rick Katz Institute for Study on Extremes · Emil Gumbel (1891 ­ 1966) -- Pioneer in application of statistics of extremes "Il est impossible que l'improbable n'arrive jamais." #12;3 OUTLINE (1) Motivation (2) Conventional Methods (3) Extreme

Katz, Richard

306

FORECAST VERIFICATION OF EXTREMES: USE OF EXTREME VALUE THEORY  

E-Print Network [OSTI]

1 FORECAST VERIFICATION OF EXTREMES: USE OF EXTREME VALUE THEORY Rick Katz Institute for Study ON EXTREMES · Emil Gumbel (1891 ­ 1966) -- Pioneer in application of statistics of extremes "Il est impossible que l'improbable n'arrive jamais." #12;3 OUTLINE (1) Motivation (2) Conventional Methods (3) Extreme

Katz, Richard

307

INTERPRETATION OF A HYDRAULIC FRACTURING EXPERIMENT, MONTICELLO, SOUTH CAROLINA  

E-Print Network [OSTI]

Letters INTERPRETATION OF A HYDRAULIC FRACTURING EXPERIMENT,12091 INTERPRETATION OF A HYDRAULIC FRACTURING EXPERIMENT,transient data from a hydraulic fracturing experiment have

Narasimhan, T.N.

2014-01-01T23:59:59.000Z

308

Geologic interpretation of gravity and magnetic data in the Salida...  

Open Energy Info (EERE)

interpretation of gravity and magnetic data in the Salida region, Colorado Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geologic interpretation of...

309

Multi-canister overpack project -- verification and validation, MCNP 4A  

SciTech Connect (OSTI)

This supporting document contains the software verification and validation (V and V) package used for Phase 2 design of the Spent Nuclear Fuel Multi-Canister Overpack. V and V packages for both ANSYS and MCNP are included. Description of Verification Run(s): This software requires that it be compiled specifically for the machine it is to be used on. Therefore to facilitate ease in the verification process the software automatically runs 25 sample problems to ensure proper installation and compilation. Once the runs are completed the software checks for verification by performing a file comparison on the new output file and the old output file. Any differences between any of the files will cause a verification error. Due to the manner in which the verification is completed a verification error does not necessarily indicate a problem. This indicates that a closer look at the output files is needed to determine the cause of the error.

Goldmann, L.H.

1997-11-10T23:59:59.000Z

310

Verification and Uncertainty Reduction of Amchitka Underground Nuclear Testing Models  

SciTech Connect (OSTI)

The modeling of Amchitka underground nuclear tests conducted in 2002 is verified and uncertainty in model input parameters, as well as predictions, has been reduced using newly collected data obtained by the summer 2004 field expedition of CRESP. Newly collected data that pertain to the groundwater model include magnetotelluric (MT) surveys conducted on the island to determine the subsurface salinity and porosity structure of the subsurface, and bathymetric surveys to determine the bathymetric maps of the areas offshore from the Long Shot and Cannikin Sites. Analysis and interpretation of the MT data yielded information on the location of the transition zone, and porosity profiles showing porosity values decaying with depth. These new data sets are used to verify the original model in terms of model parameters, model structure, and model output verification. In addition, by using the new data along with the existing data (chemistry and head data), the uncertainty in model input and output is decreased by conditioning on all the available data. A Markov Chain Monte Carlo (MCMC) approach is adapted for developing new input parameter distributions conditioned on prior knowledge and new data. The MCMC approach is a form of Bayesian conditioning that is constructed in such a way that it produces samples of the model parameters that eventually converge to a stationary posterior distribution. The Bayesian MCMC approach enhances probabilistic assessment. Instead of simply propagating uncertainty forward from input parameters into model predictions (i.e., traditional Monte Carlo approach), MCMC propagates uncertainty backward from data onto parameters, and then forward from parameters into predictions. Comparisons between new data and the original model, and conditioning on all available data using MCMC method, yield the following results and conclusions: (1) Model structure is verified at Long Shot and Cannikin where the high-resolution bathymetric data collected by CRESP yield profiles matching those used to construct the Long Shot and Cannikin model cross sections in 2002. (2) Distributions of model input parameters (recharge, conductivity, and recharge-conductivity ratio) used in 2002 for the three sites are verified where the new data indicate distributions with narrower ranges (smaller uncertainty) but within the range employed in the 2002 model. (3) As a conservative approach, distribution of fracture porosity used in 2002 was deliberately skewed toward lower values. New CRESP data indicate that the selected porosity range was overly conservative. In addition, the range of porosity values obtained from the analysis of the MT data is found to generally be about three orders of magnitude lower than range of values used in the 2002 model, though the values themselves are much larger from the MT data. (4) Distributions of the flow model output (head distribution, salinity distribution, groundwater fluxes) resulting from the 2002 model for the three sites are verified where the new model output after conditioning on the data lie within the range of the 2002 model output. (5) Cannikin model output at location of well UAe-1 is not fully verified where the new model results for small salinity values are not fully enclosed by the uncertainty bounds of the original model output. (6) With the new porosities developed from the analysis of MT data, radionuclides require thousands of years to reach the seafloor. No breakthrough resulted for any of the three sites within the 2000 year model timeframe, despite ignoring all retardation mechanisms (sorption, radionuclide trapping in glass, matrix diffusion, and radioactive decay). (7) The no-breakthrough results verify the original model in the sense that this result lies within the uncertainty bounds of the 2002 model expressed as + 2 {sigma}{sub Q} and - 2 {sigma}{sub Q}. The lower bound, - 2 {sigma}{sub Q}, in the 2002 model gave negative values implying that the bound is essentially zero. The current results of no-breakthrough match this lower bound. (8) Si

Ahmed Hassan; Jenny Chapman

2006-02-01T23:59:59.000Z

311

A comprehensive study of the analysis and economic benefits of radioactive tracer engineered simulation procedures  

SciTech Connect (OSTI)

Hydraulic Fracturing is an important technology to enhance production from tight gas reservoirs. Several techniques have been utilized to attempt to evaluate the effectiveness of hydraulic fracturing treatments. One technique, radioactive tracers, is currently used on over 15 % of the stimulation treatments performed in the U.S. With proper materials, design, and execution, tracers can be used to locate the presence and concentration of proppant at the wellbore in order to evaluate vertical and radial proppant distribution. A comprehensive study of over 100 fracture treatments has been completed in which radioactive tracers were used along with production logs, stress logs, post-fracturing completion reports, and production history to analyze completion effectiveness in four different reservoirs. Additionally, an economic benefit model was constructed to evaluate the benefit/cost ratio of applying the technology.

Fisher, K.; Robinson, B.M.; Voneiff, G.W.

1995-12-31T23:59:59.000Z

312

Enthalpy and mass flowrate measurements for two-phase geothermal production by Tracer dilution techniques  

SciTech Connect (OSTI)

A new technique has been developed for the measurement of steam mass flowrate, water mass flowrate and total enthalpy of two-phase fluids produced from geothermal wells. The method involves precisely metered injection of liquid and vapor phase tracers into the two-phase production pipeline and concurrent sampling of each phase downstream of the injection point. Subsequent chemical analysis of the steam and water samples for tracer content enables the calculation of mass flowrate for each phase given the known mass injection rates of tracer. This technique has now been used extensively at the Coso geothermal project, owned and operated by California Energy Company. Initial validation of the method was performed at the Roosevelt Hot Springs geothermal project on wells producing to individual production separators equipped with orificeplate flowmeters for each phase.

Hirtz, Paul; Lovekin, Jim; Copp, John; Buck, Cliff; Adams, Mike

1993-01-28T23:59:59.000Z

313

Estimation of Fracture Porosity in an Unsaturated Fractured Welded Tuff Using Gas Tracer Testing  

SciTech Connect (OSTI)

Kinematic fracture porosity is an important hydrologic transport parameter for predicting the potential of rapid contaminant migration through fractured rock. The transport velocity of a solute moving within a fracture network is inversely related to the fracture porosity. Since fracture porosity is often one or two orders of magnitude smaller than matrix porosity, and fracture permeability is often orders of magnitude greater than matrix permeability, solutes may travel significantly faster in the fracture network than in the surrounding matrix. This dissertation introduces a new methodology for conducting gas tracer tests using a field portable mass spectrometer along with analytical tools for estimating fracture porosity using the measured tracer concentration breakthrough curves. Field experiments were conducted at Yucca Mountain, Nevada, consisting of air-permeability transient testing and gas-tracer-transport tests. The experiments were conducted from boreholes drilled within an underground tunnel as part of an investigation of rock mass hydrological behavior. Air-permeability pressure transients, recorded during constant mass flux injections, have been analyzed using a numerical inversion procedure to identify fracture permeability and porosity. Dipole gas tracer tests have also been conducted from the same boreholes used for air-permeability testing. Mass breakthrough data has been analyzed using a random walk particle-tracking model, with a dispersivity that is a function of the advective velocity. The estimated fracture porosity using the tracer test and air-injection test data ranges from .001 to .015. These values are an order of magnitude greater than the values estimated by others using hydraulically estimated fracture apertures. The estimates of porosity made using air-permeability test data are shown to be highly sensitive to formation heterogeneity. Uncertainty analyses performed on the gas tracer test results show high confidence in the parameter estimates made.

B.M. Freifeild

2001-10-18T23:59:59.000Z

314

Measuring and interpreting charge dependent anisotropic flow  

E-Print Network [OSTI]

The Chiral Magnetic Wave (CMW) [1] predicts a dependence of the positive and negative particle elliptic flow on the event charge asymmetry. Such a dependence has been observed by the STAR Collaboration [2]. However, it is rather difficult to interpret the results of this measurement, as well as to perform cross-experiment comparisons, due to the dependence of the observable on experimental inefficiencies and the kinematic acceptance used to determine the net asymmetry. We propose another observable that is free from these deficiencies. It also provides possibilities for differential measurements clarifying the interpretation of the results. We use this new observable to study the effect of the local charge conservation that can mimic the effect of the CMW in charge dependent flow measurements.

Sergei A. Voloshin; Ronald Belmont

2014-08-04T23:59:59.000Z

315

Seismic interpretation of the Wind River Mountains  

E-Print Network [OSTI]

SEISMIC INTERPBETATICN OF THE BIND RIVER MOUNTAINS A Thesis DAVID VAN VOORHIS Submitted to the Graduate College of Texas ACM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE Auqust 'l982 Majcr Subject...: Geophysics SEISNIC INTERFRETATION OF THE HIND RIVER NOUNTAINS A Thes is by DAVID VAN VOORBIS Approved as to style and content by: (Chairman cf. Committee) (N em ber } m (Head of Department) August l 982 ABSTRACT Seismic Interpretation of the Wind...

Van Voorhis, David

1982-01-01T23:59:59.000Z

316

Fracture Model, Ground Displacements and Tracer Observations: Fruitland Coals, San Juan Basin, New Mexico,  

E-Print Network [OSTI]

that the coal reservoirs consist of six separate coal beds rather than three. Perfluorocarbon tracer monitoring the site consist of two coal beds, each separated by a shale parting. This observation indicates will improve our understanding of Fruitland coal reservoirs; help develop more effective strategies to enhance

Wilson, Thomas H.

317

Physical causes and modeling challenges of anomalous diffusion of sediment tracers  

E-Print Network [OSTI]

Physical causes and modeling challenges of anomalous diffusion of sediment tracers Douglas Jerolmack Earth & Environmental Science, UPenn [sediment@sas.upenn.edu] "Bridging the Gap", Princeton U., 2" describable by: 1. Particle volume, v [L3 ]. 2.Average velocity, us , of bed load sediment [L/T]. 3. Surface

318

BOREHOLE RADAR ATTENUATION-DIFFERENCE TOMOGRAPHY DURING THE TRACER/TIME-LAPSE TEST AT THE BOISE  

E-Print Network [OSTI]

to those suggested by radar level run attenuation differences, shot-receiver attenuation difference be explained by the difference in support volumes for the radar and chemistry measurements, and alsoBOREHOLE RADAR ATTENUATION-DIFFERENCE TOMOGRAPHY DURING THE TRACER/TIME-LAPSE TEST AT THE BOISE

Barrash, Warren

319

Project EARTH-14-SHELLDP1: Developing Metal Isotope Tracers for Understanding Sediment Depositional Environments  

E-Print Network [OSTI]

Project EARTH-14-SHELLDP1: Developing Metal Isotope Tracers for Understanding Sediment Depositional and the mechanisms behind temporal and spatial variations in organic matter quantity and quality. The project work will involve becoming proficient in clean room procedures, chemical separation techniques

Henderson, Gideon

320

Ca and 87/86 Sr isotopes as tracers of silicate weathering in small  

E-Print Network [OSTI]

44/40 Ca and 87/86 Sr isotopes as tracers of silicate weathering in small catchments of the Massif, Laboratory Division, Orléans, France 2 U.S. Geological Survey, Water Resources Division, Menlo Park, CA 94025).Measurements of 44/40 Ca isotope ratios (44/40 Ca measured by the double spike method on TIMS and normalized

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "tracer interpretation verification" 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

TRACER: A Trace Replay Tool to Evaluate Energy-Efficiency of Mass Storage Systems  

E-Print Network [OSTI]

TRACER: A Trace Replay Tool to Evaluate Energy-Efficiency of Mass Storage Systems Zhuo Liu1 , Fei of accurately evaluating energy-efficient storage systems and objectively comparing a wide range of energy RAID5 enterprise disk array. Our experiments demonstrate that energy-efficient mass storage systems can

Qin, Xiao

322

ADVANCING REACTIVE TRACER METHODS FOR MONITORING THERMAL DRAWDOWN IN GEOTHERMAL ENHANCED GEOTHERMAL RESERVOIRS  

SciTech Connect (OSTI)

Reactive tracers have long been considered a possible means of measuring thermal drawdown in a geothermal system, before significant cooling occurs at the extraction well. Here, we examine the sensitivity of the proposed method to evaluate reservoir cooling and demonstrate that while the sensitivity of the method as generally proposed is low, it may be practical under certain conditions.

Mitchell A. Plummer; Carl D. Palmer; Earl D. Mattson; George D. Redden; Laurence C. Hull

2010-10-01T23:59:59.000Z

323

Near-Infrared Gold Nanocages as a New Class of Tracers for Photoacoustic  

E-Print Network [OSTI]

radiation damage to the connective tissues of the skin. Therefore, noninvasive, nonionizing, and highNear-Infrared Gold Nanocages as a New Class of Tracers for Photoacoustic Sentinel Lymph Node based on Au nanocages shows a number of attractive features: noninvasiveness, strong optical absorption

Wang, Lihong

324

Evaluating the ability of a numerical weather prediction model to forecast tracer concentrations during ETEX 2  

E-Print Network [OSTI]

Evaluating the ability of a numerical weather prediction model to forecast tracer concentrations an operational numerical weather prediction model to forecast air quality are also investigated. These potential a numerical weather prediction (NWP) model independently of the CTM. The NWP output is typically archived

Dacre, Helen

325

Ammonium transport and reaction in contaminated groundwater: Application of isotope tracers and isotope fractionation studies  

E-Print Network [OSTI]

Ammonium transport and reaction in contaminated groundwater: Application of isotope tracers the groundwater velocity. Retardation factors and groundwater ages indicate that much of the NH4 + in the plume was recharged early in the history of the wastewater disposal. NO3 √? and excess N2 gas, which were related

326

Tracer studies of pathways and rates of meltwater transport through Arctic summer sea ice  

E-Print Network [OSTI]

Tracer studies of pathways and rates of meltwater transport through Arctic summer sea ice H. Eicken) program's field site in the northern Chukchi Sea, snow and ice meltwater flow was found to have a strong impact on the heat and mass balance of sea ice during the summer of 1998. Pathways and rates of meltwater

Eicken, Hajo

327

Seasonal Variation in Monthly Average Air Change Rates Using Passive Tracer Gas Measurements  

E-Print Network [OSTI]

of indoor air pollution sources. Concurrently, great efforts are made to make buildings energy efficient 1970s, while less attention has been paid to IAQ. Insufficient venting of indoor air pollutantsSeasonal Variation in Monthly Average Air Change Rates Using Passive Tracer Gas Measurements Marie

Hansen, René Rydhof

328

Using chemical tracers in hillslope soils to estimate the importance of chemical denudation under  

E-Print Network [OSTI]

also examine relationships between transient mechanical and chemical denudation rates. Soil particle, burrowing by mammals, or freeze-thaw mechanisms [e.g., see Birkeland, 1999]. Once created, mobile soilUsing chemical tracers in hillslope soils to estimate the importance of chemical denudation under

329

Controls on soil methane fluxes: Tests of biophysical mechanisms using stable isotope tracers  

E-Print Network [OSTI]

Controls on soil methane fluxes: Tests of biophysical mechanisms using stable isotope tracers November 2006; published 4 May 2007. [1] Understanding factors that control methane exchange between soils-based technique to investigate the relative importance of three mechanisms for explaining landscape

330

Tracer Gas as a Practical Field Diagnostic Tool for Assessing Duct System Leaks  

E-Print Network [OSTI]

diagnostic tools for detecting and locating leaks in the air distribution system. The tracer gas tests described are a good complement to these tools in the detection, location, and measurement of duct leakage. Testing for house infiltration once with the air...

Cummings, J. B.

1989-01-01T23:59:59.000Z

331

Lignin biomarkers as tracers of mercury sources in lakes water column  

E-Print Network [OSTI]

Lignin biomarkers as tracers of mercury sources in lakes water column Jean-Franc¬łois Ouellet √? Marc the autochthonous from the allochthonous organic matter (OM), lignin derived biomarker signa- tures [Lambda, S/V, C/V, P/(V ? S), 3,5-Bd/V and (Ad/Al)v] were used. Since lignin is exclusively produced by terrigenous

Long, Bernard

332

ADVANCES IN ATMOSPHERIC SCIENCES, VOL. 25, NO. 5, 2008, 805814 Diagnosing Ocean Tracer Transport from Sellafield  

E-Print Network [OSTI]

DRANGE1,2,3,4 , and Eric DELEERSNIJDER5 1 Nansen Environmental and Remote Sensing Center, Bergen, Norway applications thereof, idealized releases of passive tracers from the nuclear fuel reprocessing plants­814, doi: 10.1007/s00376-008-0805-y. 1. Introduction Estimating the integrated effect of processes acting

Drange, Helge

333

Isotopic Tracer Studies of Reaction Pathways for Propane Oxidative Dehydrogenation on Molybdenum Oxide Catalysts  

E-Print Network [OSTI]

Isotopic Tracer Studies of Reaction Pathways for Propane Oxidative Dehydrogenation on Molybdenum of propane over ZrO2-supported MoOx catalysts. Competitive reactions of C3H6 and CH3 13 CH2CH3 showed combustion of propene, or by direct combustion of propane. A mixture of C3H8 and C3D8 undergoes oxidative

Iglesia, Enrique

334

New Tracers Identify Hydraulic Fracturing Fluids and Accidental Releases from Oil and Gas Operations  

E-Print Network [OSTI]

New Tracers Identify Hydraulic Fracturing Fluids and Accidental Releases from Oil and Gas produced waters sampled from conventional oil and gas wells. We posit that boron isotope geochemistry can tool is validated by examining the composition of effluent discharge from an oil and gas brine

Jackson, Robert B.

335

Supporting BioMedical Information Retrieval: The BioTracer Approach  

E-Print Network [OSTI]

Supporting BioMedical Information Retrieval: The BioTracer Approach Heri Ramampiaro1 and Chen Li2 1 biomedical in- formation has put a high demand on existing search systems. Such a tool should be able the relevant ones the highest rank- ing. Focusing on biomedical information, this work investigates how

Li, Chen

336

Experimental device-independent verification of quantum steering  

E-Print Network [OSTI]

Bell nonlocality between distant quantum systems---i.e., joint correlations which violate a Bell inequality---can be verified without trusting the measurement devices used, nor those performing the measurements. This leads to unconditionally secure protocols for quantum information tasks such as cryptographic key distribution. However, complete verification of Bell nonlocality requires high detection efficiencies, and is not robust to the typical transmission losses that occur in long distance applications. In contrast, quantum steering, a weaker form of quantum correlation, can be verified for arbitrarily low detection efficiencies and high losses. The cost is that current steering-verification protocols require complete trust in one of the measurement devices and its operator, allowing only one-sided secure key distribution. We present device-independent steering protocols that remove this need for trust, even when Bell nonlocality is not present. We experimentally demonstrate this principle for singlet states and states that do not violate a Bell inequality.

Sacha Kocsis; Michael J. W. Hall; Adam J. Bennet; Dylan J. Saunders; G. J. Pryde

2014-08-07T23:59:59.000Z

337

Specification and Verification of Context-dependent Services  

E-Print Network [OSTI]

Current approaches for the discovery, specification, and provision of services ignore the relationship between the service contract and the conditions in which the service can guarantee its contract. Moreover, they do not use formal methods for specifying services, contracts, and compositions. Without a formal basis it is not possible to justify through formal verification the correctness conditions for service compositions and the satisfaction of contractual obligations in service provisions. We remedy this situation in this paper. We present a formal definition of services with context-dependent contracts. We define a composition theory of services with context-dependent contracts taking into consideration functional, nonfunctional, legal and contextual information. Finally, we present a formal verification approach that transforms the formal specification of service composition into extended timed automata that can be verified using the model checking tool UPPAAL.

Ibrahim, Naseem; Mohammad, Mubarak; 10.4204/EPTCS.61.2

2011-01-01T23:59:59.000Z

338

Assignment 5 Verification of ANSI-C with PVS  

E-Print Network [OSTI]

15-820-a Assignment 5 Verification of ANSI-C with PVS Due Apr. 30, 2003 1 Find the Minimum 1. Write a function in ANSI­C that finds the minumum number in an array. The size of the array is passed as a parameter. 2. Translate your ANSI­C code into PVS language, as described in the class. You may assume

Clarke, Edmund M.

339

Direct experimental verification of quantum commutation relations for Pauli operators  

E-Print Network [OSTI]

We propose and demonstrate scheme for direct experimental testing of quantum commutation relations for Pauli operators. The implemented device is an advanced quantum processor that involves two programmable quantum gates. Depending on a state of two-qubit program register, we can test either commutation or anti-commutation relations. Very good agreement between theory and experiment is observed, indicating high-quality performance of the implemented quantum processor and reliable verification of commutation relations for Pauli operators.

Xing-Can Yao; Jaromir Fiurasek; He Lu; Wei-Bo Gao; Yu-Ao Chen; Zeng-Bing Chen; Jian-Wei Pan

2010-02-08T23:59:59.000Z

340

Cleanup Verification Package for the 618-8 Burial Ground  

SciTech Connect (OSTI)

This cleanup verification package documents completion of remedial action for the 618-8 Burial Ground, also referred to as the Solid Waste Burial Ground No. 8, 318-8, and the Early Solid Waste Burial Ground. During its period of operation, the 618-8 site is speculated to have been used to bury uranium-contaminated waste derived from fuel manufacturing, and construction debris from the remodeling of the 313 Building.

M. J. Appel

2006-08-10T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Code Verification of the HIGRAD Computational Fluid Dynamics Solver  

SciTech Connect (OSTI)

The purpose of this report is to outline code and solution verification activities applied to HIGRAD, a Computational Fluid Dynamics (CFD) solver of the compressible Navier-Stokes equations developed at the Los Alamos National Laboratory, and used to simulate various phenomena such as the propagation of wildfires and atmospheric hydrodynamics. Code verification efforts, as described in this report, are an important first step to establish the credibility of numerical simulations. They provide evidence that the mathematical formulation is properly implemented without significant mistakes that would adversely impact the application of interest. Highly accurate analytical solutions are derived for four code verification test problems that exercise different aspects of the code. These test problems are referred to as: (i) the quiet start, (ii) the passive advection, (iii) the passive diffusion, and (iv) the piston-like problem. These problems are simulated using HIGRAD with different levels of mesh discretization and the numerical solutions are compared to their analytical counterparts. In addition, the rates of convergence are estimated to verify the numerical performance of the solver. The first three test problems produce numerical approximations as expected. The fourth test problem (piston-like) indicates the extent to which the code is able to simulate a 'mild' discontinuity, which is a condition that would typically be better handled by a Lagrangian formulation. The current investigation concludes that the numerical implementation of the solver performs as expected. The quality of solutions is sufficient to provide credible simulations of fluid flows around wind turbines. The main caveat associated to these findings is the low coverage provided by these four problems, and somewhat limited verification activities. A more comprehensive evaluation of HIGRAD may be beneficial for future studies.

Van Buren, Kendra L. [Los Alamos National Laboratory; Canfield, Jesse M. [Los Alamos National Laboratory; Hemez, Francois M. [Los Alamos National Laboratory; Sauer, Jeremy A. [Los Alamos National Laboratory

2012-05-04T23:59:59.000Z

342

Cost Effective Measurement and Verification at Fairchild AFB  

E-Print Network [OSTI]

Cost Effective Measurement and Verification at Fairchild AFB Authors: Charles Culp, Ph.D., P.E., Associate Director, Energy Systems Laboratory Quinn Hart, P.E., Director, Air Force Civil Engineering Support Agency Bill Turner, Energy Manager... 13,600 monitored points through the facilities. The USAF has numerous projects underway focused on achieving their goal of a 35% energy use reduction by the year 2010, per the requirements of Executive Order 13123. An ESPC (Energy Saving...

Culp, C.; Hart, Q.; Turner, B.; Berry-Lewis, S.

2003-01-01T23:59:59.000Z

343

Shared Signals: Using Existing Facility Meters for Energy Savings Verification  

E-Print Network [OSTI]

energy conservation projects. (2) These guidelines provide monitoring and verification options that have different levels of accuracy and cost. They are specifically designed for energy savings performance contracts and are designed to provide... with a fair degree of accuracy. The costs of using existing meters are often not as clear. Obviously, if an existing meter is used, the costs of purchasing new metering equipment is avoided. However, using an existing meter is not free of costs...

McBride, J. R.; Bohmer, C. J.; Price, S. D.; Carlson, K.; Lopez, J.

344

AHAM DOE Verification Test Agreement | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement3 Beryllium-Associated Worker2014DepartmentI325DOE Verification Test Agreement AHAM

345

AHAM Letter Acknowledging DOE Letter on Verification Program | Department  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement3 Beryllium-Associated Worker2014DepartmentI325DOE Verification Test Agreementof

346

A comparison of adjoint and data-centric verification techniques.  

SciTech Connect (OSTI)

This document summarizes the results from a level 3 milestone study within the CASL VUQ effort. We compare the adjoint-based a posteriori error estimation approach with a recent variant of a data-centric verification technique. We provide a brief overview of each technique and then we discuss their relative advantages and disadvantages. We use Drekar::CFD to produce numerical results for steady-state Navier Stokes and SARANS approximations. 3

Wildey, Timothy Michael; Cyr, Eric Christopher; Shadid, John Nicolas; Pawlowski, Roger Patrick; Smith, Thomas Michael

2013-03-01T23:59:59.000Z

347

Verification and validation of COBRA-SFS transient analysis capability  

SciTech Connect (OSTI)

This report provides documentation of the verification and validation testing of the transient capability in the COBRA-SFS code, and is organized into three main sections. The primary documentation of the code was published in September 1995, with the release of COBRA-SFS, Cycle 2. The validation and verification supporting the release and licensing of COBRA-SFS was based solely on steady-state applications, even though the appropriate transient terms have been included in the conservation equations from the first cycle. Section 2.0, COBRA-SFS Code Description, presents a capsule description of the code, and a summary of the conservation equations solved to obtain the flow and temperature fields within a cask or assembly model. This section repeats in abbreviated form the code description presented in the primary documentation (Michener et al. 1995), and is meant to serve as a quick reference, rather than independent documentation of all code features and capabilities. Section 3.0, Transient Capability Verification, presents a set of comparisons between code calculations and analytical solutions for selected heat transfer and fluid flow problems. Section 4.0, Transient Capability Validation, presents comparisons between code calculations and experimental data obtained in spent fuel storage cask tests. Based on the comparisons presented in Sections 2.0 and 3.0, conclusions and recommendations for application of COBRA-SFS to transient analysis are presented in Section 5.0.

Rector, D.R.; Michener, T.E.; Cuta, J.M.

1998-05-01T23:59:59.000Z

348

Enrichment Assay Methods Development for the Integrated Cylinder Verification System  

SciTech Connect (OSTI)

International Atomic Energy Agency (IAEA) inspectors currently perform periodic inspections at uranium enrichment plants to verify UF6 cylinder enrichment declarations. Measurements are typically performed with handheld high-resolution sensors on a sampling of cylinders taken to be representative of the facility's entire product-cylinder inventory. Pacific Northwest National Laboratory (PNNL) is developing a concept to automate the verification of enrichment plant cylinders to enable 100 percent product-cylinder verification and potentially, mass-balance calculations on the facility as a whole (by also measuring feed and tails cylinders). The Integrated Cylinder Verification System (ICVS) could be located at key measurement points to positively identify each cylinder, measure its mass and enrichment, store the collected data in a secure database, and maintain continuity of knowledge on measured cylinders until IAEA inspector arrival. The three main objectives of this FY09 project are summarized here and described in more detail in the report: (1) Develop a preliminary design for a prototype NDA system, (2) Refine PNNL's MCNP models of the NDA system, and (3) Procure and test key pulse-processing components. Progress against these tasks to date, and next steps, are discussed.

Smith, Leon E.; Misner, Alex C.; Hatchell, Brian K.; Curtis, Michael M.

2009-10-22T23:59:59.000Z

349

AUTOMATED, HIGHLY ACCURATE VERIFICATION OF RELAP5-3D  

SciTech Connect (OSTI)

Computer programs that analyze light water reactor safety solve complex systems of governing, closure and special process equations to model the underlying physics. In addition, these programs incorporate many other features and are quite large. RELAP5-3D[1] has over 300,000 lines of coding for physics, input, output, data management, user-interaction, and post-processing. For software quality assurance, the code must be verified and validated before being released to users. Verification ensures that a program is built right by checking that it meets its design specifications. Recently, there has been an increased importance on the development of automated verification processes that compare coding against its documented algorithms and equations and compares its calculations against analytical solutions and the method of manufactured solutions[2]. For the first time, the ability exists to ensure that the data transfer operations associated with timestep advancement/repeating and writing/reading a solution to a file have no unintended consequences. To ensure that the code performs as intended over its extensive list of applications, an automated and highly accurate verification method has been modified and applied to RELAP5-3D. Furthermore, mathematical analysis of the adequacy of the checks used in the comparisons is provided.

George L Mesina; David Aumiller; Francis Buschman

2014-07-01T23:59:59.000Z

350

Evidence of Multi-Process Matrix Diffusion in a Single Fracturefrom a Field Tracer Test  

SciTech Connect (OSTI)

Compared to values inferred from laboratory tests on matrix cores, many field tracer tests in fractured rock have shown enhanced matrix diffusion coefficient values (obtained using a single-process matrix-diffusion model with a homogeneous matrix diffusion coefficient). To investigate this phenomenon, a conceptual model of multi-process matrix diffusion in a single-fracture system was developed. In this model, three matrix diffusion processes of different diffusion rates were assumed to coexist: (1) diffusion into stagnant water and infilling materials within fractures, (2) diffusion into a degraded matrix zone, and (3) further diffusion into an intact matrix zone. The validity of the conceptual model was then demonstrated by analyzing a unique tracer test conducted using a long-time constant-concentration injection. The tracer-test analysis was conducted using a numerical model capable of tracking the multiple matrix-diffusion processes. The analysis showed that in the degraded zone, a diffusion process with an enhanced diffusion rate controlled the steep rising limb and decay-like falling limb in the observed breakthrough curve, whereas in the intact matrix zone, a process involving a lower diffusion rate affected the long-term middle platform of slowly increasing tracer concentration. The different matrix-diffusion-coefficient values revealed from the field tracer test are consistent with the variability of matrix diffusion coefficient measured for rock cores with different degrees of fracture coating at the same site. By comparing to the matrix diffusion coefficient calibrated using single-process matrix diffusion, we demonstrated that this multi-process matrix diffusion may contribute to the enhanced matrix-diffusion-coefficient values for single-fracture systems at the field scale.

Zhou, Quanlin; Liu, Hui-Hai; Bodvarsson, Gudmundur; Molz, Fred J.

2005-06-11T23:59:59.000Z

351

2003 Idaho National Engineering and Environmental Laboratory Shallow Injection Well Verification and Status Report  

SciTech Connect (OSTI)

A detailed verification of the shallow injection well inventory for Bechtel BWXT Idaho, LLC and Argonne National Laboratory-West-operated facilities was performed in 2003. Fourteen wells, or 20%, were randomly selected for the verification. This report provides updated information on the 14 shallow injection wells that were randomly selected for the 2003 verification. Where applicable, additional information is provided for shallow injection wells that were not selected for the 2003 verification. This updated information was incorporated into the 2003 Shallow Injection Wells Inventory, Sixty-eight wells were removed from the 2003 Shallow Injection Well Inventory.

Lewis, M.G.

2003-08-21T23:59:59.000Z

352

2003 Idaho National Engineering and Environmental Laboratory Shallow Injection Well Verification and Status Report  

SciTech Connect (OSTI)

A detailed verification of the shallow injection well inventory for Bechtel BWXT Idaho, LLC and Argonne National Laboratory-West-operated facilities was performed in 2003. Fourteen wells, or 20%, were randomly selected for the verification. This report provides updated information on the 14 shallow injection wells that were randomly selected for the 2003 verification. Where applicable, additional information is provided for shallow injection wells that were not selected for the 2003 verification. This updated information was incorporated into the 2003 Shallow Injection Wells Inventory. Sixty-eight wells were removed from the 2003 Shallow Injection Well Inventory.

Mike Lewis

2003-08-01T23:59:59.000Z

353

Finite-State Verification for High Performance Computing George S. Avrunin  

E-Print Network [OSTI]

Finite-State Verification for High Performance Computing George S. Avrunin Department (top500.org) reveals that high performance computing has become practically synonymous with parallel

Avrunin, George S.

354

INDEPENDENT VERIFICATION SURVEY REPORT FOR THE OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT  

SciTech Connect (OSTI)

INDEPENDENT VERIFICATION SURVEY REPORT FOR THE OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT, MIAMISBURG, OHIO DCN: 0468-SR-02-0

W.C. Adams

2010-05-24T23:59:59.000Z

355

REVISED INDEPENDENT VERIFICATION SURVEY OF A AND B RADIOACTIVE WASTE TRANSFER LINES TRENCH BROOKHAVEN NATIONAL LABORATORY  

SciTech Connect (OSTI)

REVISED INDEPENDENT VERIFICATION SURVEY OF THE A AND B RADIOACTIVE WASTE TRANSFER LINES TRENCH, BROOKHAVEN NATIONAL LABORATORY 5062-SR-01-1

P.C. Weaver

2010-02-10T23:59:59.000Z

356

INDEPENDENT VERIFICATION SURVEY REPORT OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT  

SciTech Connect (OSTI)

INDEPENDENT VERIFICATION SURVEY REPORT FOR THE OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT, MIAMISBURG, OHIO DCN: 0468-SR-03-0

W.C. Adams

2010-07-21T23:59:59.000Z

357

Overview of SIMS-Based Experimental Studies of Tracer Diffusion in Solids and Application to Mg Self-Diffusion  

SciTech Connect (OSTI)

Tracer diffusivities provide the most fundamental information on diffusion in materials and are the foundation of robust diffusion databases. Compared to traditional radiotracer techniques that utilize radioactive isotopes, the secondary ion mass spectrometry (SIMS) based thin-film technique for tracer diffusion is based on the use of enriched stable isotopes that can be accurately profiled using SIMS. Experimental procedures & techniques that are utilized for the measurement of tracer diffusion coefficients are presented for pure magnesium, which presents some unique challenges due to the ease of oxidation. The development of a modified Shewmon-Rhines diffusion capsule for annealing Mg and an ultra-high vacuum (UHV) system for sputter deposition of Mg isotopes are discussed. Optimized conditions for accurate SIMS depth profiling in polycrystalline Mg are provided. An automated procedure for the correction of heat-up and cool-down times during tracer diffusion annealing is discussed. The non-linear fitting of a SIMS depth profile data using the thin film Gaussian solution to obtain the tracer diffusivity along with the background tracer concentration and tracer film thickness is discussed. An Arrhenius fit of the Mg self-diffusion data obtained using the low-temperature SIMS measurements from this study and the high-temperature radiotracer measurements of Shewmon and Rhines (1954) was found to be a good representation of both types of diffusion data that cover a broad range of temperatures between 250 - 627 C (523 900 K).

Kulkarni, Nagraj S [ORNL; Warmack, Robert J Bruce [ORNL; Radhakrishnan, Balasubramaniam [ORNL; HunterJr., Jerry [Virginia Polytechnic Institute and State University; Sohn, Yong Ho [University of Central Florida; Coffey, Kevin [University of Central Florida; Murch, Prof. Graeme [University of Newcastle, NSW, Australia; Belova, Irina [University of Newcastle, NSW, Australia

2014-01-01T23:59:59.000Z

358

Formalizing Multimedia Interpretation based on Abduction over Description Logic Aboxes  

E-Print Network [OSTI]

Formalizing Multimedia Interpretation based on Abduction over Description Logic Aboxes Sofia be formally derived using abduction over domain knowledge represented in an ontology. The approach uses rules, and formalizes the multimedia interpretation process using a combined abduction and deduction

Moeller, Ralf

359

Report on workshop A1: Exact solutions and their interpretation  

E-Print Network [OSTI]

I report on the communications and posters presented on exact solutions and their interpretation at the GRG18 Conference, Sydney.

Josť M. M. Senovilla

2007-11-29T23:59:59.000Z

360

Logic Based Approaches to Workflow Modeling and Verification 1 Saikat Mukherjee, Hasan Davulcu, Michael Kifer, Pinar Senkul,  

E-Print Network [OSTI]

Contents Logic Based Approaches to Workflow Modeling and Verification 1 Saikat Mukherjee, Hasan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 #12;#12;Logic-Based Approaches to Workflow Modeling and Verification Saikat Mukherjee,1 Hasan

Yang, Guizhen

Note: This page contains sample records for the topic "tracer interpretation verification" 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

DEVELOPMENT OF A PORTAL MONITOR FOR UF6 CYLINDER VERIFICATION  

SciTech Connect (OSTI)

International Atomic Energy Agency (IAEA) inspectors currently perform periodic inspections at uranium enrichment plants to verify UF6 cylinder enrichment declarations. Measurements are performed with handheld high-resolution sensors on a sampling of cylinders taken to be representative of the facilityís operations. As additional enrichment plans come online to support the expansion of nuclear power, reducing person-days of inspection will take on greater importance. Pacific Northwest National Laboratory (PNNL) is developing a concept to automate the verification of enrichment plant cylinders to enable 100% product-cylinder verification and potentially, mass-balance calculations on the facility as a whole (by also measuring feed and tails cylinders). The Automated Cylinder Enrichment Verification System (ACEVS) would be located at key measurement points and will positively identify each cylinder, measure its mass and enrichment, store the data along with operator inputs in a secure database, and maintain continuity of knowledge on measured cylinders until IAEA inspector arrival. Given the potential for reduced inspector presence, the operational and manpower-reduction benefits of the portal concept are clear. However, it is necessary to assess whether the cylinder portal concept can meet, or potentially improve upon, todayís U-235 enrichment assay performance. PNNLís ACEVS concept utilizes sensors that could be operated in an unattended mode: moderated He-3 neutron detectors and large NaI(Tl) scintillators for gamma-ray spectroscopy. The medium-resolution NaI(Tl) scintillators are a sacrifice in energy resolution but do provide high collection efficiency for signatures above 1 MeV. The He-3/NaI sensor combination allows the exploitation of additional, more-penetrating signatures than those currently utilized: Neutrons produced from F-19(?,n) reactions (spawned primarily from U-234 alpha emission) and high-energy gamma rays (extending up to 10 MeV) induced by neutrons interacting in the steel cylinder. These signatures are indirect measures of U-235 that require a relatively stable U-234/U-235 ratio in the product material in order to be useful. The hypothesis of this work is that the U-234/U-235 ratio is sufficiently constant, for the specific facility where the automated system is installed, to rely on neutron and high-energy gamma-ray signatures for indirect measurement of U-235. Further, these highly penetrating signatures can be combined with a modified form of NaI-based 185-keV enrichment measurements to meet target uncertainties for the verification of product cylinders, with the additional benefits of full-volume assay of the cylinder and 100% product-cylinder verification (as opposed to todayís sampling-based approach). This paper focuses on the enrichment measurement aspects of the ACEVS concept: neutron and high-energy gamma-ray signatures, the radiation sensors designed to collect those signatures, and proof-of-principle cylinder measurements and analysis. Preliminary analysis indicates that an automated cylinder verification approach has the potential to meet target uncertainty values for 30B products cylinders (5%), assuming ore-based enrichment feed and a facility-specific calibration. Also described is the additional work needed to more definitively assess the conceptís viability, particularly through a better understanding of the U-234/U-235 ratio variability in modern enrichment plants.

Smith, Leon E.; Curtis, Michael M.; Shaver, Mark W.; Benz, Jacob M.; Misner, Alex C.; Mace, Emily K.; Jordan, David V.; Noss, Daniel; Ford, Herbert

2009-10-06T23:59:59.000Z

362

Hillslope Hydrological Processes in a Costa Rican Rainforest: Water Supply Partitioning Using Isotope Tracers  

E-Print Network [OSTI]

Blancas Hydroelectric Project, and for improved predictions in similar, ungauged watersheds (ICE 2002). Study Watershed The study watershed is located in San Juan de PeŮas Blancas, east of the Cordillera de TilarŠn mountain range backing up... peaks. These goals were accomplished by supplementing hydraulic and physical data already available at the site with use of isotope tracers. Methods Study Site The 2.2 ha watershed used in this research is located in PeŮas Blancas, Costa Rica...

DuMont, Andrea Lyn

2014-04-24T23:59:59.000Z

363

Inversion of field-scale partitioning tracer response for characterizing oil saturation distribution: a streamline approach  

E-Print Network [OSTI]

INVERSION OF FIELD-SCALE PARTITIONING TRACER RESPONSE FOR CHARACTERIZING OIL SATURATION DISTRIBUTION: A STREAMLINE APPROACH A Thesis by PAVEL ALEXANDROVICH ILIASSOV Submitted to the Office of Graduate Studies of Texas A&M University... A Thesis by PAVEL ALEXANDROVICH ILIASSOV Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: c 4- Akhil Datta-Gupta (Chair of Committee...

Iliassov, Pavel Alexandrovich

2000-01-01T23:59:59.000Z

364

A Runtime Verification Framework for Control System Simulation  

SciTech Connect (OSTI)

n a standard workflow for the validation of a control system, the control system is implemented as an extension to a simulator. Such simulators are complex software systems, and engineers may unknowingly violate constraints a simulator places on extensions. As such, errors may be introduced in the implementation of either the control system or the simulator leading to invalid simulation results. This paper presents a novel runtime verification approach for verifying control system implementations within simulators. The major contribution of the approach is the two-tier specification process. In the first tier, engineers model constraints using a domain-specific language tailored to modeling a controllerís response to changes in its input. The language is high-level and effectively hides the implementation details of the simulator, allowing engineers to specify design-level constraints independent of low-level simulator interfaces. In the second tier, simulator developers provide mapping rules for mapping design-level constraints to the implementation of the simulator. Using the rules, an automated tool transforms the design-level specifications into simulator-specific runtime verification specifications and generates monitoring code which is injected into the implementation of the simulator. During simulation, these monitors observe the input and output variables of the control system and report changes to the verifier. The verifier checks whether these changes follow the constraints of the control system. We describe application of this approach to the verification of the constraints of an HVAC control system implemented with the power grid simulator GridLAB-D.

Ciraci, Selim; Fuller, Jason C.; Daily, Jeffrey A.; Makhmalbaf, Atefe; Callahan, Charles D.

2014-08-02T23:59:59.000Z

365

Verification of hourly forecasts of wind turbine power output  

SciTech Connect (OSTI)

A verification of hourly average wind speed forecasts in terms of hourly average power output of a MOD-2 was performed for four sites. Site-specific probabilistic transformation models were developed to transform the forecast and observed hourly average speeds to the percent probability of exceedance of an hourly average power output. (This transformation model also appears to have value in predicting annual energy production for use in wind energy feasibility studies.) The transformed forecasts were verified in a deterministic sense (i.e., as continuous values) and in a probabilistic sense (based upon the probability of power output falling in a specified category). Since the smoothing effects of time averaging are very pronounced, the 90% probability of exceedance was built into the transformation models. Semiobjective and objective (model output statistics) forecasts were made compared for the four sites. The verification results indicate that the correct category can be forecast an average of 75% of the time over a 24-hour period. Accuracy generally decreases with projection time out to approx. 18 hours and then may increase due to the fairly regular diurnal wind patterns that occur at many sites. The ability to forecast the correct power output category increases with increasing power output because occurrences of high hourly average power output (near rated) are relatively rare and are generally not forecast. The semiobjective forecasts proved superior to model output statistics in forecasting high values of power output and in the shorter time frames (1 to 6 hours). However, model output statistics were slightly more accurate at other power output levels and times. Noticeable differences were observed between deterministic and probabilistic (categorical) forecast verification results.

Wegley, H.L.

1984-08-01T23:59:59.000Z

366

VERIFICATION TESTING AND DESIGN PROCEDURE FOR FRP GRID REINFORCED CONCRETE SLABS  

E-Print Network [OSTI]

1 VERIFICATION TESTING AND DESIGN PROCEDURE FOR FRP GRID REINFORCED CONCRETE SLABS by Jeffrey J (Civil Engineering) at the UNIVERSITY OF WISCONSIN-MADISON 2009 #12;2 VERIFICATION TESTING AND DESIGN that can be positioned quickly. Initial testing on three dimensional fiber reinforced polymer grids has led

Bank, Lawrence C.

367

Comparative Application of Real-Time Verification Methods to an Automotive Architecture  

E-Print Network [OSTI]

Comparative Application of Real-Time Verification Methods to an Automotive Architecture Steffen especially to distributed automotive architectures. The high connectivity of different control units forms approaches for the verification of real-time behavior of an automotive architecture are compared. Two tools

Ulm, Universität

368

Discovery and Verification of Neighbor Positions in Mobile Ad Hoc Networks  

E-Print Network [OSTI]

1 Discovery and Verification of Neighbor Positions in Mobile Ad Hoc Networks Marco Fiore, Member Papadimitratos, Member, IEEE Abstract--A growing number of ad hoc networking protocols and location verification, mobile ad hoc networks, vehicular networks. I. INTRODUCTION Location awareness has become

Paris-Sud XI, Université de

369

HARVARD UNIVERSITY VENDOR JUSTIFICATION/PRICE VERIFICATION FORM TUB AND ORG NAME: ___________________________ACCT.CODE:________________________________________________________DATE:_______  

E-Print Network [OSTI]

HARVARD UNIVERSITY VENDOR JUSTIFICATION/PRICE VERIFICATION FORM TUB AND ORG NAME/Org/Object/Fund/Activity/Sub-Activity/Root WEB VOUCHER NO:____________VENDOR:____________________! Grant !!!! Contract !!!!Cooperative Agreement (please check one) The Federal Government requires vendor selection justification and price verification

Heller, Eric

370

Comments for A Conference on Verification in the 21st Century  

SciTech Connect (OSTI)

The author offers 5 points for the discussion of Verification and Technology: (1) Experience with the implementation of arms limitation and arms reduction agreements confirms that technology alone has never been relied upon to provide effective verification. (2) The historical practice of verification of arms control treaties between Cold War rivals may constrain the cooperative and innovative use of technology for transparency, veification and confidence building in the future. (3) An area that has been identified by many, including the US State Department and NNSA as being rich for exploration for potential uses of technology for transparency and verification is information and communications technology (ICT). This includes social media, crowd-sourcing, the internet of things, and the concept of societal verification, but there are issues. (4) On the issue of the extent to which verification technologies are keeping pace with the demands of future protocols and agrements I think the more direct question is ''are they effective in supporting the objectives of the treaty or agreement?'' In this regard it is important to acknowledge that there is a verification grand challenge at our doorstep. That is ''how does one verify limitations on nuclear warheads in national stockpiles?'' (5) Finally, while recognizing the daunting political and security challenges of such an approach, multilateral engagement and cooperation at the conceptual and technical levels provides benefits for addressing future verification challenges.

Doyle, James E. [Los Alamos National Laboratory

2012-06-12T23:59:59.000Z

371

Guidelines for Participation in the ETV ESTE Verification Test of Lead Paint Test Kits  

E-Print Network [OSTI]

Guidelines for Participation in the ETV ESTE Verification Test of Lead Paint Test Kits Revised 09/24/2009 The following guidelines have been set to establish the eligibility of individual test kits for participation in the ETV ESTE verification test of lead paint test kits. Test kits must conform to the following guidelines

372

Formal Verification of a Superscalar Execution Unit1 Kyle L. Nelson Alok Jain Randal E. Bryant  

E-Print Network [OSTI]

of the entire system. Our verifica- tion methodology, based on Symbolic Trajectory Evaluation, is able to bridge not provide a rigorous methodology for subsystem verification. Our verification methodology is able to bridge funded by Semiconductor Research Corporation #96-DC- 068 Permission to make digital/hard copy of all

Bryant, Randal E.

373

Formal Verification of a Superscalar Execution Unit 1 Kyle L. Nelson Alok Jain Randal E. Bryant  

E-Print Network [OSTI]

of the entire system. Our verifica≠ tion methodology, based on Symbolic Trajectory Evaluation, is able to bridge not provide a rigorous methodology for subsystem verification. Our verification methodology is able to bridge funded by Semiconductor Research Corporation #96≠DC≠ 068 Permission to make digital/hard copy of all

Bryant, Randal E.

374

Formal Verification of CHP Specifications with CADP, Illustration on an Asynchronous Network-on-Chip  

E-Print Network [OSTI]

Formal Verification of CHP Specifications with CADP, Illustration on an Asynchronous Network of the Presentation · Introduction · Translation from CHP to LOTOS · CADP toolbox overview · Verification of ANOC Context & Objective process calculus CHP Petri nets process calculus LOTOS (CEA/Leti) translation

Joseph Fourier Grenoble-I, Université

375

Biometric classifier update using online learning: A case study in near infrared face verification  

E-Print Network [OSTI]

Biometric classifier update using online learning: A case study in near infrared face verification 2010 Accepted 26 January 2010 Keywords: Biometrics Online learning Support vector machine Near infrared of the proposed online learning strategy is validated in a near infrared face verification application involving

Ross, Arun Abraham

376

Using Sparse Representation for Fish Recognition and Verification in Real World Observation  

E-Print Network [OSTI]

Using Sparse Representation for Fish Recognition and Verification in Real World Observation Yi, Hsinchu, Taiwan Abstract - The purpose of this paper is to present an innovated fish recognition and verification method suited for the real world automatic underwater fish observation. Based on the fish

Chen, Chaur-Chin

377

A Verification Framework for FBD based Software in Nuclear Power Plants Junbeom Yoo  

E-Print Network [OSTI]

A Verification Framework for FBD based Software in Nuclear Power Plants Junbeom Yoo Div, conducted using a nuclear power plant shutdown system being developed in Korea, demonstrated in nuclear power plant's reactor protection systems. The software verification framework uses two different

378

An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration  

E-Print Network [OSTI]

An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration J. L the success of geologic carbon sequestration projects. To detect subtle CO2 leakage signals, we present), An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration, Geophys. Res

Hilley, George

379

Flux Measurements of Volatile Organic Compounds from an Urban Tower Platform in Houston, Texas: Trends and Tracers  

E-Print Network [OSTI]

and traffic counts except during variable working hours. To assign measured fluxes to local sources, we tested a bulk flux footprint model (Kormann and Meixner model) designed for uniform emission surface areas in this urban, heterogeneous landscape. Tracer...

Hale, Martin C

2014-05-08T23:59:59.000Z

380

Thorium-234 as a tracer of spatial, temporal and vertical variability in particle flux in the North Pacific  

E-Print Network [OSTI]

Thorium-234 as a tracer of spatial, temporal and vertical variability in particle flux in the North Available online 16 April 2009 Keywords: Thorium-234 Particle flux Sediment trap Scavenging North Pacific

Siegel, David A.

Note: This page contains sample records for the topic "tracer interpretation verification" 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

ELIXYS - a fully automated, three-reactor high-pressure radiosynthesizer for development and routine production of diverse PET tracers.  

E-Print Network [OSTI]

cancer treatment with PET/CT: does it make a difference? Jfor decentralized production of PET tracers. In Positronprobes FMAU, FHBG, and FHPG as PET imaging agents for HSV1-

2013-01-01T23:59:59.000Z

382

ICDF Complex Waste Profile and Verification Sample Guidance  

SciTech Connect (OSTI)

This guidance document will assist waste generators who characterize waste streams destined for disposal at the Idaho Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Disposal Facility (ICDF) Complex. The purpose of this document is to develop a conservative but appropriate way to (1) characterize waste for entry into the ICDF; (2) ensure compliance with the waste acceptance criteria; and (3) facilitate disposal at the ICDF landfill or evaporation pond. In addition, this document will establish the waste verification process used by ICDF personnel to ensure that untreated waste meets applicable ICDF acceptance limits

W. M. Heileson

2006-10-01T23:59:59.000Z

383

Cleanup Verification Package for the 118-F-1 Burial Ground  

SciTech Connect (OSTI)

This cleanup verification package documents completion of remedial action for the 118-F-1 Burial Ground on the Hanford Site. This burial ground is a combination of two locations formerly called Minor Construction Burial Ground No. 2 and Solid Waste Burial Ground No. 2. This waste site received radioactive equipment and other miscellaneous waste from 105-F Reactor operations, including dummy elements and irradiated process tubing; gun barrel tips, steel sleeves, and metal chips removed from the reactor; filter boxes containing reactor graphite chips; and miscellaneous construction solid waste.

E. J. Farris and H. M. Sulloway

2008-01-10T23:59:59.000Z

384

Digital data storage systems, computers, and data verification methods  

DOE Patents [OSTI]

Digital data storage systems, computers, and data verification methods are provided. According to a first aspect of the invention, a computer includes an interface adapted to couple with a dynamic database; and processing circuitry configured to provide a first hash from digital data stored within a portion of the dynamic database at an initial moment in time, to provide a second hash from digital data stored within the portion of the dynamic database at a subsequent moment in time, and to compare the first hash and the second hash.

Groeneveld, Bennett J.; Austad, Wayne E.; Walsh, Stuart C.; Herring, Catherine A.

2005-12-27T23:59:59.000Z

385

Cleanup Verification Package for the 116-K-2 Effluent Trench  

SciTech Connect (OSTI)

This cleanup verification package documents completion of remedial action for the 116-K-2 effluent trench, also referred to as the 116-K-2 mile-long trench and the 116-K-2 site. During its period of operation, the 116-K-2 site was used to dispose of cooling water effluent from the 105-KE and 105-KW Reactors by percolation into the soil. This site also received mixed liquid wastes from the 105-KW and 105-KE fuel storage basins, reactor floor drains, and miscellaneous decontamination activities.

J. M. Capron

2006-04-04T23:59:59.000Z

386

Design verification and cold-flow modeling test report  

SciTech Connect (OSTI)

This report presents a compilation of the following three test reports prepared by TRW for Alaska Industrial Development and Export Authority (AIDEA) as part of the Healy Clean Coal Project, Phase 1 Design of the TRW Combustor and Auxiliary Systems, which is co-sponsored by the Department of Energy under the Clean Coal Technology 3 Program: (1) Design Verification Test Report, dated April 1993, (2) Combustor Cold Flow Model Report, dated August 28, 1992, (3) Coal Feed System Cold Flow Model Report, October 28, 1992. In this compilation, these three reports are included in one volume consisting of three parts, and TRW proprietary information has been excluded.

Not Available

1993-07-01T23:59:59.000Z

387

Become an SEP Verification Body | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsBSCmemo.pdf BSCmemo.pdf BSCmemo.pdf More DocumentsEnergy ManagementVerification

388

Transforming PLC Programs into Formal Models for Verification Purposes  

E-Print Network [OSTI]

Most of CERNís industrial installations rely on PLC-based (Programmable Logic Controller) control systems developed using the UNICOS framework. This framework contains common, reusable program modules and their correctness is a high priority. Testing is already applied to find errors, but this method has limitations. In this work an approach is proposed to transform automatically PLC programs into formal models, with the goal of applying formal verification to ensure their correctness. We target model checking which is a precise, mathematical-based method to check formalized requirements automatically against the system.

Darvas, D; Blanco, E

2013-01-01T23:59:59.000Z

389

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

SciTech Connect (OSTI)

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

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

1994-10-01T23:59:59.000Z

390

Uncertainties in Air Exchange using Continuous-Injection, Long-Term Sampling Tracer-Gas Methods  

SciTech Connect (OSTI)

The PerFluorocarbon Tracer (PFT) method is a low-cost approach commonly used for measuring air exchange in buildings using tracer gases. It is a specific application of the more general Continuous-Injection, Long-Term Sampling (CILTS) method. The technique is widely used but there has been little work on understanding the uncertainties (both precision and bias) associated with its use, particularly given that it is typically deployed by untrained or lightly trained people to minimize experimental costs. In this article we will conduct a first-principles error analysis to estimate the uncertainties and then compare that analysis to CILTS measurements that were over-sampled, through the use of multiple tracers and emitter and sampler distribution patterns, in three houses. We find that the CILTS method can have an overall uncertainty of 10-15percent in ideal circumstances, but that even in highly controlled field experiments done by trained experimenters expected uncertainties are about 20percent. In addition, there are many field conditions (such as open windows) where CILTS is not likely to provide any quantitative data. Even avoiding the worst situations of assumption violations CILTS should be considered as having a something like a ?factor of two? uncertainty for the broad field trials that it is typically used in. We provide guidance on how to deploy CILTS and design the experiment to minimize uncertainties.

Sherman, Max H.; Walker, Iain S.; Lunden, Melissa M.

2013-12-01T23:59:59.000Z

391

Field studies of streamflow generation using natural and injected tracers on Bickford and Walker Branch Watersheds  

SciTech Connect (OSTI)

Field studies of streamflow generation were undertaken on two forested watersheds, the West Road subcatchment of Bickford Watershed in central Massachusetts and the West Fork of Walker Branch Watershed in eastern Tennessee. A major component of the research was development of a two-stage methodology for the use of naturally-occurring {sup 222}Rn as a tracer. The first of the two stages was solving a mass-balance equation for {sup 222}Rn around a stream reach of interest in order to calculate Rn{sub q}, the {sup 222}Rn content of the lateral inflow to the reach; a conservative tracer (chloride) and a volatile tracer (propane) were injected into the study stream to account for lateral inflow to, and volatilization from, the study reach. The second stage involved quantitative comparison of Rn{sub q} to the measured {sup 222}Rn concentrations of different subsurface waters in order to assess how important these waters were in contributing lateral inflow to the stream reach.

Genereux, D.; Hemond, H. (Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Civil Engineering); Mulholland, P. (Oak Ridge National Lab., TN (United States))

1992-05-01T23:59:59.000Z

392

Comparison of observed and predicted short-term tracer gas concentrations in the atmosphere  

SciTech Connect (OSTI)

The Savannah River Laboratory is in the process of conducting a series of atmospheric tracer studies. The inert gas sulfurhexafluoride is released from a height of 62 m for 15 min and concentrations in air are measured on sampling arcs up to 30 km downwind of the release point. Maximum 15 min. air concentrations from 14 of these tracer tests have been compared with the ground-level, centerline air concentration predicted with a Gaussian plume atmospheric transport model using eight different sets of atmospheric dispersion parameters. Preliminary analysis of the results from these comparisons indicates that the dispersion parameters developed at Juelich, West Germany, based on tracers released from a height of 50 m, give the best overall agreement between the predicted and observed values. The median value of the ratio of predicted to observed air concentrations for this set of parameters is 1.3, and the correlation coefficient between the log of the predictions and the log of the observations is 0.72. For the commonly used Pasquill-Gifford dispersion parameters, the values of these same statistics are 4.4 and 0.68, respectively. The Gaussian plume model is widely used to predict air concentrations resulting from short-term radionuclide release to the atmosphere. The results of comparisons such as these must be considered whenever the Gaussian model is used for such purposes. 22 references, 3 tables.

Cotter, S.J.; Miller, C.W.; Lin, W.C.T.

1985-01-01T23:59:59.000Z

393

Semianalytical Solutions of Radioactive or Reactive Tracer Transport in Layered Fractured Media  

SciTech Connect (OSTI)

In this paper, semianalytical solutions are developed for the problem of transport of radioactive or reactive tracers (solutes or colloids) through a layered system of heterogeneous fractured media with misaligned fractures. The tracer transport equations in the matrix account for (a) diffusion, (b) surface diffusion (for solutes only), (c) mass transfer between the mobile and immobile water fractions, (d) linear kinetic or equilibrium physical, chemical, or combined solute sorption or colloid filtration, and (e) radioactive decay or first order chemical reactions. Any number of radioactive decay daughter products (or products of a linear, first-order reaction chain) can be tracked. The tracer-transport equations in the fractures account for the same processes, in addition to advection and hydrodynamic dispersion. Additionally, the colloid transport equations account for straining and velocity adjustments related to the colloidal size. The solutions, which are analytical in the Laplace space, are numerically inverted to provide the solution in time and can accommodate any number of fractured and/or porous layers. The solutions are verified using analytical solutions for limiting cases of solute and colloid transport through fractured and porous media. The effect of important parameters on the transport of {sup 3}H, {sup 237}Np and {sup 239}Pu (and its daughters) is investigated in several test problems involving layered geological systems of varying complexity. {sup 239}Pu colloid transport problems in multilayered systems indicate significant colloid accumulations at straining interfaces but much faster transport of the colloid than the corresponding strongly sorbing solute species.

G.J. Moridis; G. S. Bodvarsson

2001-10-01T23:59:59.000Z

394

Tracer measurements during long-term circulation of the Rosemanowes HDR geothermal system  

SciTech Connect (OSTI)

Circulation experiments have been in operation for over two years in the artificially stimulated hot dry rock (HDR) doublet of the Camborne School of Mines (CSM) research facility in Cornwall, England. During that period tracer tests have been run at intervals using inert and reactive compounds. Initially, the results of the inert tracer investigations showed that the active volume (indicated by modal and median volumes) of the circulating system was dormant. Then, after a period of sustained oscillation, notable increases in active volume were observed which depended on both the subsequent flow rate changes and circulation time. these dynamic changes had almost reached optimum values when a downhole pump was introduced in the production well. The drawdown in the production well caused a reduction of the modal volume, whilst the median volume remained almost the same. Since then, the active volume has remained unchanged and irresponsive to circulation time and flow rate. The results of the reactive tracer tests confirm increasing chemical reaction with increasing circulation time and correlate qualitatively with the opening of newer and hotter pathways within the reservoir. However, repeated production logs throughout the circulation have identified flow paths that have depleted thermally; a discrepancy that can be explained by the geometry of the system and the preferential downward reservoir growth.

Kwakwa, K.A.

1988-01-01T23:59:59.000Z

395

FINAL REPORT ĖINDEPENDENT VERIFICATION SURVEY SUMMARY AND RESULTS FOR THE ARGONNE NATIONAL LABORATORY BUILDING 330 PROJECT FOOTPRINT, ARGONNE, ILLINOIS  

SciTech Connect (OSTI)

ORISE conducted onsite verification activities of the Building 330 project footprint during the period of June 6 through June 7, 2011. The verification activities included technical reviews of project documents, visual inspections, radiation surface scans, and sampling and analysis. The draft verification report was issued in July 2011 with findings and recommendations. The contractor performed additional evaluations and remediation.

ERIKA N. BAILEY

2012-02-29T23:59:59.000Z

396

INSTALLATION CERTIFICATE CF-6R-MECH-26-HERS Refrigerant Charge Verification -Alternate Measurement Procedure (Page 1 of 2)  

E-Print Network [OSTI]

INSTALLATION CERTIFICATE CF-6R-MECH-26-HERS Refrigerant Charge Verification - Alternate Measurement are specified in Reference Residential Appendix RA3.2. If refrigerant charge verification is required-MECH-26-HERS Refrigerant Charge Verification - Alternate Measurement Procedure (Page 2 of 2) Site Address

397

TRU waste certification and TRUPACT-2 payload verification  

SciTech Connect (OSTI)

The Waste Isolation Pilot Plant (WIPP) established a policy that requires each waste shipper to verify that all waste shipments meet the requirements of the Waste Acceptance Criteria (WAC) prior to being shipped. This verification provides assurance that transuranic (TRU) wastes meet the criteria while still retained in a facility where discrepancies can be immediately corrected. Each Department of Energy (DOE) TRU waste facility planning to ship waste to the Waste Isolation Pilot Plant (WIPP) is required to develop and implement a specific program including Quality Assurance (QA) provisions to verify that waste is in full compliance with WIPP's WAC. This program is audited by a composite DOE and contractor audit team prior to granting the facility permission to certify waste. During interaction with the Nuclear Regulatory Commission (NRC) on payload verification for shipping in TRUPACT-II, a similar system was established by DOE. The TRUPACT-II Safety Analysis Report (SAR) contains the technical requirements and physical and chemical limits that payloads must meet (like the WAC). All shippers must plan and implement a payload control program including independent QA provisions. A similar composite audit team will conduct preshipment audits, frequent subsequent audits, and operations inspections to verify that all TRU waste shipments in TRUPACT-II meet the requirements of the Certificate of Compliance issued by the NRC which invokes the SAR requirements. 1 fig.

Hunter, E.K. (USDOE Albuquerque Operations Office, Carlsbad, NM (USA). Waste Isolation Pilot Plant Project Office); Johnson, J.E. (Westinghouse Electric Corp., Carlsbad, NM (USA). Waste Isolation Div.)

1990-01-01T23:59:59.000Z

398

An evaluation of the management system verification pilot at Hanford  

SciTech Connect (OSTI)

The Chemical Management System (CMS), currently under development at Hanford, was used as the ''test program'' for pilot testing the value added aspects of the Chemical Manufacturers Association's (CMA) Management Systems Verification (MSV) process. The MSV process, which was developed by CMA's member chemical companies specifically as a tool to assist in the continuous improvement of environment, safety and health (ESH) performance, represents a commercial sector ''best practice'' for evaluating ESH management systems. The primary purpose of Hanford's MSV Pilot was to evaluate the applicability and utility of the MSV process in the Department of Energy (DOE) environment. However, because the Integrated Safety Management System (ISMS) is the framework for ESH management at Hanford and at all DOE sites, the pilot specifically considered the MSV process in the context of a possible future adjunct to Integrated Safety Management System Verification (ISMSV) efforts at Hanford and elsewhere within the DOE complex. The pilot involved the conduct of two-hour interviews with four separate panels of individuals with functional responsibilities related to the CMS including the Department of Energy Richland Operations (DOE-RL), Fluor Daniel Hanford (FDH) and FDH's major subcontractors (MSCS). A semi-structured interview process was employed by the team of three ''verifiers'' who directed open-ended questions to the panels regarding the development, integration and effectiveness of management systems necessary to ensure the sustainability of the CMS effort. An ''MSV Pilot Effectiveness Survey'' also was completed by each panel participant immediately following the interview.

BRIGGS, C.R.

1998-11-12T23:59:59.000Z

399

Exploring the Possible Use of Information Barriers for future Biological Weapons Verification Regimes  

SciTech Connect (OSTI)

This report describes a path forward for implementing information barriers in a future generic biological arms-control verification regime. Information barriers have become a staple of discussion in the area of arms control verification approaches for nuclear weapons and components. Information barriers when used with a measurement system allow for the determination that an item has sensitive characteristics without releasing any of the sensitive information. Over the last 15 years the United States (with the Russian Federation) has led on the development of information barriers in the area of the verification of nuclear weapons and nuclear components. The work of the US and the Russian Federation has prompted other states (e.g., UK and Norway) to consider the merits of information barriers for possible verification regimes. In the context of a biological weapons control verification regime, the dual-use nature of the biotechnology will require protection of sensitive information while allowing for the verification of treaty commitments. A major question that has arisen is whether - in a biological weapons verification regime - the presence or absence of a weapon pathogen can be determined without revealing any information about possible sensitive or proprietary information contained in the genetic materials being declared under a verification regime. This study indicates that a verification regime could be constructed using a small number of pathogens that spans the range of known biological weapons agents. Since the number of possible pathogens is small it is possible and prudent to treat these pathogens as analogies to attributes in a nuclear verification regime. This study has determined that there may be some information that needs to be protected in a biological weapons control verification regime. To protect this information, the study concludes that the Lawrence Livermore Microbial Detection Array may be a suitable technology for the detection of the genetic information associated with the various pathogens. In addition, it has been determined that a suitable information barrier could be applied to this technology when the verification regime has been defined. Finally, the report posits a path forward for additional development of information barriers in a biological weapons verification regime. This path forward has shown that a new analysis approach coined as Information Loss Analysis might need to be pursued so that a numerical understanding of how information can be lost in specific measurement systems can be achieved.

Luke, S J

2011-12-20T23:59:59.000Z

400

EPA Air Docket A-98-49, Item II-B1-31; July 2014 Verification and Validation of WIPP Data Packages  

E-Print Network [OSTI]

Laboratories on May 13, 2014, and performed verification and validation of the americium and plutonium analysis

Note: This page contains sample records for the topic "tracer interpretation verification" 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

The Top Mass: Interpretation and Theoretical Uncertainties  

E-Print Network [OSTI]

Currently the most precise LHC measurements of the top quark mass are determinations of the top quark mass parameter of Monte-Carlo (MC) event generators reaching uncertainties of well below $1$ GeV. However, there is an additional theoretical problem when using the MC top mass $m_t^{\\rm MC}$ as an input for theoretical predictions, because a rigorous relation of $m_t^{\\rm MC}$ to a renormalized field theory mass is, at the very strict level, absent. In this talk I show how - nevertheless - some concrete statements on $m_t^{\\rm MC}$ can be deduced assuming that the MC generator behaves like a rigorous first principles QCD calculator for the observables that are used for the analyses. I give simple conceptual arguments showing that in this context $m_t^{\\rm MC}$ can be interpreted like the mass of a heavy-light top meson, and that there is a conversion relation to field theory top quark masses that requires a non-perturbative input. The situation is in analogy to B physics where a similar relation exists between experimental B meson masses and field theory bottom masses. The relation gives a prescription how to use $m_t^{\\rm MC}$ as an input for theoretical predictions in perturbative QCD. The outcome is that at this time an additional uncertainty of about $1$ GeV has to be accounted for. I discuss limitations of the arguments I give and possible ways to test them, or even to improve the current situation.

Andrť H. Hoang

2014-12-11T23:59:59.000Z

402

Kinetic analysis of 18F-fluorodihydrorotenone as a deposited myocardial flow tracer: Comparison to thallium-201.  

SciTech Connect (OSTI)

The goal of this investigation was to assess the accuracy of 18F-fluorodihydrorotenone (18F-FDHR) as a new deposited myocardial flow tracer and compare the results to those for 201Tl. Methods. The kinetics of these flow tracers were evaluated in 22 isolated, erythrocyte- and albumin-perfused rabbit hearts over a flow range encountered in patients. The two flow tracers plus a vascular reference tracer (131I-albumin) were introduced as a bolus through a port just above the aortic cannula. Myocardial extraction, retention, washout, and uptake parameters were computed from the venous outflow curves using the multiple indicator dilution technique and spectral analysis. Results. The mean initial extraction fractions of 18F-FDHR (0.85 +- 0.07) and 201Tl (0.87 +- 0.05) were not significantly different, although the initial extraction fraction for 18F-FDHR declined with flow (P < 0.0001), whereas the initial extraction fraction of 201Tl did not. Washout of 201Tl was faster (P < 0.001) and more affected by flow (P < 0.05) than 18F-FDHR washout. Except for initial extraction fraction, 18F-FDHR retention was greater (P < 0.001) and less affected by flow (P < 0.05) than 201Tl retention. Reflecting its superior retention, net uptake of 18F-FDHR was better correlated with flow than 201Tl uptake at both one and fifteen minutes after tracer introduction (P < 0.0001 for both comparisons). Conclusion. The superior correlation of 18F-FDHR uptake with flow indicates that it is a better flow tracer than 201Tl in the isolated rabbit heart. Compared to the other currently available positron-emitting flow tracers (82Rb, 13N-ammonia, and 15O-water), 18F-FDHR has the potential of providing excellent image resolution without the need for an on-site cyclotron.

Marshall, Robert C.; Powers-Risius, Patricia; Reutter, Bryan W.; O'Neil, James P.; La Belle, Michael; Huesman, Ronald H.; VanBrocklin, Henry F.

2004-03-01T23:59:59.000Z

403

3-D Interpretation Of Magnetotelluric Data At The Bajawa Geothermal...  

Open Energy Info (EERE)

Interpretation Of Magnetotelluric Data At The Bajawa Geothermal Field, Indonesia Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: 3-D...

404

Structural interpretation of the Coso geothermal field. Summary...  

Open Energy Info (EERE)

field. Summary report, October 1986-August 1987 Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Structural interpretation of the Coso geothermal field....

405

NREL: Community - NREL Handbook Helps Industry Collect and Interpret...  

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

Handbook Helps Industry Collect and Interpret Solar Resource Data for Solar Energy Applications Comprehensive handbook is a valuable resource for the solar industry on the...

406

Fluid Inclusion Stratigraphy: Interpretation of New Wells in...  

Open Energy Info (EERE)

Coso Geothermal Field Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Fluid Inclusion Stratigraphy: Interpretation of New Wells in the...

407

Interpretation of Water Sample Analysis, Waunita Hot Spring Project...  

Open Energy Info (EERE)

R. H. Carpenter (Colorado Geological Survey in Cooperation with the U.S. Department of Energy). 1981. Interpretation of Water Sample Analysis, Waunita Hot Spring Project,...

408

A New Interpretation of the Scanning Tunneling Microscope Image...  

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

of Graphite. A New Interpretation of the Scanning Tunneling Microscope Image of Graphite. Abstract: In this work, highly-resolved scanning tunneling microscopy images of graphite...

409

DOE Withdraws Interpretive Rule and Provides Enforcement Guidance...  

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

unwarranted the draft interpretative rule setting out the Department's views on the definition of a "showerhead" for purposes of the water conservation standard enacted by...

410

Physical Interpretation of the 26 Dimensions of Bosonic String Theory  

E-Print Network [OSTI]

The 26 dimensions of Closed Unoriented Bosonic String Theory are interpreted as the 26 dimensions of the traceless Jordan algebra J3(O)o of 3x3 Octonionic matrices, with each of the 3 Octonionic dimenisons of J3(O)o having the following physical interpretation: 4-dimensional physical spacetime plus 4-dimensional internal symmetry space; 8 first-generation fermion particles; 8 first-generation fermion anti-particles. This interpretation is consistent with interpreting the strings as World Lines of the Worlds of Many-Worlds Quantum Theory and the 26 dimensions as the degrees of freedom of the Worlds of the Many-Worlds.

Frank D. Smith Jr

2002-07-15T23:59:59.000Z

411

INDEPENDENT VERIFICATION OF THE BUILDING 3550 SLAB AT OAK RIDGE NATIONAL LABORATORY OAK RIDGE, TENNESSEE  

SciTech Connect (OSTI)

The Oak Ridge Institute for Science and Education (ORISE) has completed the independent verification survey of the Building 3550 Slab. The results of this effort are provided. The objective of this verification survey is to provide independent review and field assessment of remediation actions conducted by Safety and Ecology Corporation (SEC) to document that the final radiological condition of the slab meets the release guidelines. Verification survey activities on the Building 3550 Slab that included scans, measurements, and the collection of smears. Scans for alpha, alpha plus beta, and gamma activity identified several areas that were investigated.

Weaver, Phyllis C.

2012-05-08T23:59:59.000Z

412

Independent Verification Final Summary Report for the David Witherspoon, Inc. 1630 Site Knoxville, Tennessee  

SciTech Connect (OSTI)

The primary objective of the independent verification was to determine if BJC performed the appropriate actions to meet the specified ďhot spotĒ cleanup criteria of 500 picocuries per gram (pCi/g) uranium-238 (U-238) in surface soil. Specific tasks performed by the independent verification team (IVT) to satisfy this objective included: 1) performing radiological walkover surveys, and 2) collecting soil samples for independent analyses. The independent verification (IV) efforts were designed to evaluate radioactive contaminants (specifically U-238) in the exposed surfaces below one foot of the original site grade, given that the top one foot layer of soil on the site was removed in its entirety.

P.C. Weaver

2009-04-29T23:59:59.000Z

413

Letter Report - Verification Survey of Final Grids at the David Witherspoon, Inc. 1630 Site Knoxville, Tennessee  

SciTech Connect (OSTI)

Conduct verification surveys of grids at the DWI 1630 Site in Knoxville, Tennessee. The independent verification team (IVT) from ORISE, conducted verification activities in whole and partial grids, as completed by BJC. ORISE site activities included gamma surface scans and soil sampling within 33 grids; G11 through G14; H11 through H15; X14, X15, X19, and X21; J13 through J15 and J17 through J21; K7 through K9 and K13 through K15; L13 through L15; and M14 through M16

P.C. Weaver

2009-02-17T23:59:59.000Z

414

A new statistical dispersion model for tracer tests and contaminant spread in porous media  

SciTech Connect (OSTI)

Dispersion of solutes moving in permeable media is an essential control to describe fluid flow in permeable media. Dispersion can be thought of as a spreading of a solute caused by the presence of microscopic inhomogeneities. An accurate model for dispersion is needed for accurate estimation of oil recovery efficiencies and clean up costs of subsurface contaminants. Current approaches utilizing the fickian assumption fall short in describing the real physics of spreading during a solute transport process. Numerous field investigations have shown that dispersivities measured in the field are much larger than those measured in the lab for the same type of porous material. Moreover, field measured dispersivities have been shown to be scale dependent, that is, a tracer test conducted over a longer travel path will yield a larger dispersivity value than a tracer test conducted in the same geologic formation over a shorter travel path. Numerous approaches to address this problem have been developed yet none attempted to go beyond the Fickian dispersion assumption. In this study, a convective dispersivity is introduced. New model assumes that dispersion is dimensionless and mainly determined by pore size distribution. The new model results in a spread that increases linearly with time contrary to conventional model, which predicts a mixing zone length that increases with square root of time. Therefore, new model explains the field test results that indicate increasing dispersivity with distance. The model validations are in perfect agreement with experimental results, which include; Ganapathy et al.`s slug experiment on Antolini sandstone, Handy`s radioactive tracer experiment on Alhambra sandstone, and CT experiment conducted at BDM-OK/NIPER facilities on Tallant sandstone.

Ates, H.; Kasap, E. [Univ. of Tulsa, OK (United States)

1995-12-31T23:59:59.000Z

415

Results of injection and tracer tests in Olkaria East Geothermal Field  

SciTech Connect (OSTI)

This paper presents results of a six month Injection and Tracer test done in Olkaria East Geothermal Field The Injection tests show that commencement of injection prior to onset of large drawdown in the reservoir leads to greater sustenance of well production and can reduce well cycling which is a common feature of wells in Olkaria East Field. For cases where injection is started after some drawdown has occurred in the reservoir, injection while leading to improvement of well output can also lead to increase in well cycling which is a non desirable side effect. Tracer tests reveal slow rate of fluid migration (< 5 m/hr). However estimates of the cumulative tracer returns over the period of injection is at least 31% which is large and reveals the danger of late time thermal drawdown and possible loss of production. It is shown in the discussion that the two sets of results are consistent with a reservoir where high permeability occurs along contact surfaces which act as horizontal "fractures" while the formations between the "fractures" have low permeability. This type of fracture system will lead to channeled flow of injected fluid and therefore greater thermal depletion along the fractures while formations further from the fracture would still be at higher temperature. In an attempt to try and achieve a more uniform thermal depletion in the reservoir, it is proposed that continuous injection be done for short periods (~2 years) and this be followed by recovery periods of the nearly the same length of time before resumption of injection again.

Ambusso, Willis J.

1994-01-20T23:59:59.000Z

416

Battery Technology Life Verification Test Manual Revision 1  

SciTech Connect (OSTI)

The purpose of this Technology Life Verification Test (TLVT) Manual is to help guide developers in their effort to successfully commercialize advanced energy storage devices such as battery and ultracapacitor technologies. The experimental design and data analysis discussed herein are focused on automotive applications based on the United States Advanced Battery Consortium (USABC) electric vehicle, hybrid electric vehicle, and plug-in hybrid electric vehicle (EV, HEV, and PHEV, respectively) performance targets. However, the methodology can be equally applied to other applications as well. This manual supersedes the February 2005 version of the TLVT Manual (Reference 1). It includes criteria for statistically-based life test matrix designs as well as requirements for test data analysis and reporting. Calendar life modeling and estimation techniques, including a userís guide to the corresponding software tool is now provided in the Battery Life Estimator (BLE) Manual (Reference 2).

Jon P. Christophersen

2012-12-01T23:59:59.000Z

417

The new geospatial tools: global transparency enhancing safeguards verification  

SciTech Connect (OSTI)

This paper focuses on the importance and potential role of the new, freely available, geospatial tools for enhancing IAEA safeguards and how, together with commercial satellite imagery, they can be used to promote 'all-source synergy'. As additional 'open sources', these new geospatial tools have heralded a new era of 'global transparency' and they can be used to substantially augment existing information-driven safeguards gathering techniques, procedures, and analyses in the remote detection of undeclared facilities, as well as support ongoing monitoring and verification of various treaty (e.g., NPT, FMCT) relevant activities and programs. As an illustration of how these new geospatial tools may be applied, an original exemplar case study provides how it is possible to derive value-added follow-up information on some recent public media reporting of a former clandestine underground plutonium production complex (now being converted to a 'Tourist Attraction' given the site's abandonment by China in the early 1980s). That open source media reporting, when combined with subsequent commentary found in various Internet-based Blogs and Wikis, led to independent verification of the reporting with additional ground truth via 'crowdsourcing' (tourist photos as found on 'social networking' venues like Google Earth's Panoramio layer and Twitter). Confirmation of the precise geospatial location of the site (along with a more complete facility characterization incorporating 3-D Modeling and visualization) was only made possible following the acquisition of higher resolution commercial satellite imagery that could be correlated with the reporting, ground photos, and an interior diagram, through original imagery analysis of the overhead imagery.

Pabian, Frank Vincent [Los Alamos National Laboratory

2010-09-16T23:59:59.000Z

418

VAMOS: The verification and monitoring options study: Current research options for in-situ monitoring and verification of contaminant remediation and containment within the vadose zone  

SciTech Connect (OSTI)

The Verification and Monitoring Options Study Project (VAMOS) was established to identify high-priority options for future vadose-zone environmental research in the areas of in-situ remediation monitoring, post-closure monitoring, and containment emplacement and verification monitoring. VAMOS examined projected needs not currently being met with applied technology in order to develop viable monitoring and verification research options. The study emphasized a compatible systems approach to reinforce the need for utilizing compatible components to provide user friendly site monitoring systems. To identify the needs and research options related to vadose-zone environmental monitoring and verification, a literature search and expert panel forums were conducted. The search included present drivers for environmental monitoring technology, technology applications, and research efforts. The forums included scientific, academic, industry, and regulatory environmental professionals as well as end users of environmental technology. The experts evaluated current and future monitoring and verification needs, methods for meeting these needs, and viable research options and directions. A variety of high-priority technology development, user facility, and technology guidance research options were developed and presented as an outcome of the literature search and expert panel forums.

Betsill, J.D. [Sandia National Labs., Albuquerque, NM (United States); Gruebel, R.D. [Tech Reps., Inc., Albuquerque, NM (United States)

1995-09-01T23:59:59.000Z

419

Generating and Interpreting Referring Expressions in Dustin Arthur Smith  

E-Print Network [OSTI]

Generating and Interpreting Referring Expressions in Context by Dustin Arthur Smith B.S., Wake Referring Expressions in Context by Dustin Arthur Smith Submitted to the Program of Media Arts and Sciences, MIT Media Lab #12;Generating and Interpreting Referring Expressions in Context by Dustin Arthur Smith

420

Transformation of Meta-Information by Abstract Co-Interpretation  

E-Print Network [OSTI]

Transformation of Meta-Information by Abstract Co-Interpretation Raimund Kirner and Peter Puschner based on abstract interpretation to transform meta-information in parallel with the transformation. The construction of a correct transformation function for the meta-information can be quite complicated in case

Note: This page contains sample records for the topic "tracer interpretation verification" 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

FORMAL SEMANTICS AND VERIFICATION OF DYNAMIC RELIABILITY BLOCK DIAGRAMS FOR SYSTEM RELIABILITY MODELING  

E-Print Network [OSTI]

FORMAL SEMANTICS AND VERIFICATION OF DYNAMIC RELIABILITY BLOCK DIAGRAMS FOR SYSTEM RELIABILITY captured by existing reliability modeling tools. In this paper, we introduce a new reliability modeling tool, called dynamic reliability block diagrams (DRBD), for modeling dynamic relationships between

Xu, Haiping

422

Energy Efficiency and Conservation Loan Program Webinar Series: Evaluation, Monitoring, & Verification  

Broader source: Energy.gov [DOE]

This webinar will cover the basics of Evaluation, Monitoring, & Verification (EM&V). Attendees will learn key concepts, an overview of the full process, and EM&V framework.

423

Controllable needle-free injection : development and verification of a novel device  

E-Print Network [OSTI]

Current needle-free injection technology is based on actuation via compressed springs or gas. These devices are not easy to modify for different depths of injections. This thesis describes the design and verification of a ...

Wendell, Dawn M. (Dawn Marie), 1983-

2006-01-01T23:59:59.000Z

424

SciTech Connect: Verification of the New FAST v8 Capabilities...  

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

of the New FAST v8 Capabilities for the Modeling of Fixed-Bottom Offshore Wind Turbines: Preprint Citation Details In-Document Search Title: Verification of the New FAST...

425

Method and computer product to increase accuracy of time-based software verification for sensor networks  

DOE Patents [OSTI]

A recursive verification protocol to reduce the time variance due to delays in the network by putting the subject node at most one hop from the verifier node provides for an efficient manner to test wireless sensor nodes. Since the software signatures are time based, recursive testing will give a much cleaner signal for positive verification of the software running on any one node in the sensor network. In this protocol, the main verifier checks its neighbor, who in turn checks its neighbor, and continuing this process until all nodes have been verified. This ensures minimum time delays for the software verification. Should a node fail the test, the software verification downstream is halted until an alternative path (one not including the failed node) is found. Utilizing techniques well known in the art, having a node tested twice, or not at all, can be avoided.

Foo Kune, Denis (Saint Paul, MN); Mahadevan, Karthikeyan (Mountain View, CA)

2011-01-25T23:59:59.000Z

426

Computer-Aided Verification: How to Trust a Machine with Your Life  

E-Print Network [OSTI]

are used to control all sorts of devices -- from washing machines and microwave ovens to braking systems is formidable. The formal verification of a five-line algorithm can easily run into pages of dense mathematical

Pace, Gordon J.

427

Formal Verification of an ARM processor Vishnu A. Patankar Alok Jain Randal E. Bryant  

E-Print Network [OSTI]

1 Formal Verification of an ARM processor Vishnu A. Patankar Alok Jain Randal E. Bryant Department Email: vishnup@ece.cmu.edu Email: alokj@cadence.com Email: randy.bryant@cs.cmu.edu Abstract This paper

Bryant, Randal E.

428

Verification of Floating-Point Adders Yirng-An Chen and Randal E. Bryant  

E-Print Network [OSTI]

Verification of Floating-Point Adders ° Yirng-An Chen and Randal E. Bryant yachen+@cs.cmu.edu, bryant+@cs.cmu.edu Computer Science Dept., Carnegie Mellon Univ., Pittsburgh, PA 15213 Abstract

Bryant, Randal E.

429

Formal Verification of Infinite State Systems Using Boolean Methods Randal E. Bryant  

E-Print Network [OSTI]

Formal Verification of Infinite State Systems Using Boolean Methods Randal E. Bryant Carnegie Mellon University School of Computer Science Pittsburgh, PA 15213 USA Randy.Bryant@cs.cmu.edu Abstract

Bryant, Randal E.

430

Formal Verification of Infinite State Systems Using Boolean Methods # Randal E. Bryant  

E-Print Network [OSTI]

Formal Verification of Infinite State Systems Using Boolean Methods # Randal E. Bryant Carnegie Mellon University School of Computer Science Pittsburgh, PA 15213 USA Randy.Bryant@cs.cmu.edu Abstract

Bryant, Randal E.

431

Analysis of Path Planning Algorithms : a Formal Verification-based Approach Arash Khabbaz Saberi1  

E-Print Network [OSTI]

Analysis of Path Planning Algorithms : a Formal Verification-based Approach Arash Khabbaz Saberi1, The Netherlands a.khabbaz.saberi@student.tue.nl, j.f.groote@tue.nl, s.keshishzadeh@tue.nl Abstract

Groote, Jan Friso

432

Robust audio-visual person verification using Web-camera video  

E-Print Network [OSTI]

This thesis examines the challenge of robust audio-visual person verification using data recorded in multiple environments with various lighting conditions, irregular visual backgrounds, and diverse background noise. ...

Schultz, Daniel (Daniel T.)

2006-01-01T23:59:59.000Z

433

CCP-TP-001, Rev. 11 CCP Project level Data Validation and Verification  

E-Print Network [OSTI]

-Line Headspace Gas Analysis (HSG) Visual Examination (VE) X Nondestructive Examination (NDE) Nondestructive Assay-10b(2) Verification Source: Drum Data Form 12. NDE data are complete and acceptable Container based

434

Development and experimental verification of a parametric model of an automotive damper  

E-Print Network [OSTI]

. displacement plots for examination. A shock dynamometer was used to correlate the model to real damper data for verification of accuracy. With a working model, components including the bleed orifice, piston orifice, and compression and rebound shims which were...

Rhoades, Kirk Shawn

2006-10-30T23:59:59.000Z

435

Better Buildings Alliance, Advanced Rooftop Unit Campaign: Rooftop Unit Measurement and Verification (Fact Sheet)  

SciTech Connect (OSTI)

This document provides facility managers and building owners an introduction to measurement and verification (M&V) methods to estimate energy and cost savings of rooftop units replacement or retrofit projects to estimate paybacks or to justify future projects.

Not Available

2014-09-01T23:59:59.000Z

436

Independent Verification Survey Report for the Operable Unit-1 Miamisburg Closure Project, Miamisburg, OH  

SciTech Connect (OSTI)

The objectives of the independent verification survey were to confirm that remedial actions have been effective in meeting established release criteria and that documentation accurately and adequately describes the current radiological and chemical conditions of the MCP site.

Weaver, P.

2008-03-17T23:59:59.000Z

437

High accuracy verification of a correlated-photon-based method for determining photon-  

E-Print Network [OSTI]

with Correlated Visible Photons: Technique Verification and Measurement Uncertainty," Metrologia 32, 479­483 (1995," Metrologia 37, 625­628 (2000). #77187 - $15.00 USD Received 22 November 2006; revised 26 January 2007

Migdall, Alan

438

Potential method for measurement of CO2 leakage from underground sequestration fields using radioactive tracers  

SciTech Connect (OSTI)

Reduction of anthropogenic carbon dioxide (CO2) release to the environment is a pressing challenge that should be addressed to avert the potential devastating effects of global warming. Within the United States, the most abundant sources of CO2 emissions are those generate from coal- or gas-fired power plants; one method to control CO2 emissions is to sequester it in deep underground geological formations. From integrated assessment models the overall leakage rates from these storage locations must be less than 0.1% of stored volume per year for long-term control. The ability to detect and characterize nascent leaks, in conjunction with subsequent remediation efforts, will significantly decrease the amount of CO2 released back into the environment. Because potential leakage pathways are not necessarily known a priori, onsite monitoring must be performed; the monitoring region in the vicinity of a CO2 injection well may be as large as 100 km2, which represents the estimated size of a supercritical CO2 bubble that would form under typical injection scenarios. By spiking the injected CO2 with a radiological or stable isotope tracer, it will be possible to detect ground leaks from the sequestered CO2 using fewer sampling stations, with greater accuracy than would be possible using simple CO2 sensors. The relative merits of various sorbent materials, radiological and stable isotope tracers, detection methods and potential interferences will be discussed.

Bachelor, Paula P.; McIntyre, Justin I.; Amonette, James E.; Hayes, James C.; Milbrath, Brian D.; Saripalli, Prasad

2008-07-01T23:59:59.000Z

439

The Lagrangian dynamics of thermal tracer particles in Navier-Stokes fluids  

E-Print Network [OSTI]

A basic issue for Navier-Stokes (NS) fluids is their characterization in terms of the so-called NS phase-space classical dynamical system, which provides a mathematical model for the description of the dynamics of infinitesimal (or i\\textit{deal}) tracer particles in these fluids. The goal of this paper is to analyze the properties of a particular subset of solutions of the NS dynamical system, denoted as \\textit{thermal tracer particles} (TTPs), whose states are determined uniquely by the NS fluid fields. Applications concerning both deterministic and stochastic NS fluids are pointed out. In particular, in both cases it is shown that in terms of the ensemble of TTPs a statistical description of NS fluids can be formulated. In the case of stochastic fluids this feature permits to uniquely establish the corresponding Langevin and Fokker-Planck dynamics. Finally, the relationship with the customary statistical treatment of hydrodynamic turbulence (HT) is analyzed and a solution to the closure problem for the statistical description of HT is proposed.

Massimo Tessarotto; Claudio Asci; Claudio Cremaschini; Alessandro Soranzo; Marco Tessarotto; Gino Tironi

2012-03-17T23:59:59.000Z

440

A Really Good Hammer: Quantification of Mass Transfer Using Perfluorocarbon Tracers (475th Brookhaven Lecture)  

SciTech Connect (OSTI)

Brookhaven Labís perfluorocarbon tracer (PFT) technology can be viewed as a hammer looking for nails. But, according to Tom Watson, leader of the Labís Tracer Technology Group in the Environmental Research and Technology Division (ERTD), ďItís a really good hammer!Ē The colorless, odorless and safe gases have a number of research uses, from modeling how airborne contaminants might move through urban canyons to help first responders plan their response to potential terrorist attacks and accidents to locating leaks in underground gas pipes. Their extremely low background level ó detectable at one part per quadrillion ó allows their transport to be easily tracked. Lab researchers used PFTs during the 2005 Urban Dispersion Program field studies in New York City, gathering data to help improve models of how a gas or chemical release might move around Manhattanís tall buildings and canyons. Closer to home, scientists also used PFTs to make ventilation measurements in Bldg. 400 on the Lab site to provide data to test air flow models used in determining the effects of passive and active air exchange on the levels of indoor and outdoor air pollution, and to determine the effects of an accidental or intentional release of hazardous substances in or around buildings.

Watson, Tom [BNL Environmental Sciences, Tracer Technology Group

2012-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

REAL-TIME TRACER MONITORING OF RESERVOIR STIMULATION PROCEDURES VIA ELECTRONIC WIRELINE AND TELEMETRY DATA TRANSMISSION  

SciTech Connect (OSTI)

Finalized Phase 2-3 project work has field-proven two separate real-time reservoir processes that were co-developed via funding by the National Energy Technology Laboratory (NETL). Both technologies are presently patented in the United States and select foreign markets; a downhole-commingled reservoir stimulation procedure and a real-time tracer-logged fracturing diagnostic system. Phase 2 and early Phase 3 project work included the research, development and well testing of a U.S. patented gamma tracer fracturing diagnostic system. This stimulation logging process was successfully field-demonstrated; real-time tracer measurement of fracture height while fracturing was accomplished and proven technically possible. However, after the initial well tests, there were several licensing issues that developed between service providers that restricted and minimized Realtimezone's (RTZ) ability to field-test the real-time gamma diagnostic system as was originally outlined for this project. Said restrictions were encountered after when one major provider agreed to license their gamma logging tools to another. Both of these companies previously promised contributory support toward Realtimezone's DE-FC26-99FT40129 project work, however, actual support was less than desired when newly-licensed wireline gamma logging tools from one company were converted by the other from electric wireline into slickline, batter-powered ''memory'' tools for post-stimulation logging purposes. Unfortunately, the converted post-fracture measurement memory tools have no applications in experimentally monitoring real-time movement of tracers in the reservoir concurrent with the fracturing treatment. RTZ subsequently worked with other tracer gamma-logging tool companies for basic gamma logging services, but with lessened results due to lack of multiple-isotope detection capability. In addition to real-time logging system development and well testing, final Phase 2 and Phase 3 project work included the development of a real-time reservoir stimulation procedure, which was successfully field-demonstrated and is presently patented in the U.S. and select foreign countries, including Venezuela, Brazil and Canada. Said patents are co-owned by RTZ and the National Energy Technology Lab (NETL). In 2002, Realtimezone and the NETL licensed said patents to Halliburton Energy Services (HES). Additional licensing agreements (LA) are anticipated with other service industry companies in 2005. Final Phase 3 work has led to commercial applications of the real-time reservoir stimulation procedure. Four successfully downhole-mixed well tests were conducted with commercially expected production results. The most recent, fourth field test was a downhole-mixed stimulated well completed in June, 2004, which currently produces 11 BOPD with 90 barrels of water per day. Conducted Phase 2 and Phase 3 field-test work to date has resulted in the fine-tuning of a real-time enhanced stimulation system that will significantly increase future petroleum well recoveries in the United States and foreign petroleum fields, both onshore and offshore, and in vertical and horizontal wells.

George L. Scott III

2005-01-01T23:59:59.000Z

442

A Systematic Approach to the Interpretation of Magnetotelluric Data in  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 SouthWater Rights, Substantive(Sichuan,FinancialTracerTheVolcanic

443

Addition of tracers into the polypropylene in view of automatic sorting of plastic wastes using X-ray fluorescence spectrometry  

SciTech Connect (OSTI)

This study focused on the detection of rare earth oxides, used as tracers for the identification of polymer materials, using XRF (X-ray fluorescence) spectrometry. The tests were carried out in a test system device which allows the collection of static measurements of the samples' spectrum through the use of energy dispersive X-ray fluorescence technology. A sorting process based on tracers added into the polymer matrix is proposed in order to increase sorting selectivity of polypropylene during end-of-life recycling. Tracers consist of systems formed by one or by several substances dispersed into a material, to add a selective property to it, with the aim of improving the efficiency of sorting and high speed identification. Several samples containing rare earth oxides (Y{sub 2}O{sub 3}, CeO{sub 2}, Nd{sub 2}O{sub 3}, Gd{sub 2}O{sub 3}, Dy{sub 2}O{sub 3}, Er{sub 2}O{sub 3} and Yb{sub 2}O{sub 3}) in different concentrations were prepared in order to analyse some of the parameters which can influence the detection, such as the concentration of tracers, the acquisition time and the possible overlapping among the tracers. This work shows that by using the XRF test system device, it was possible to detect 5 of the 7 tracers tested for 1 min exposure time and at a concentration level of 1000 ppm. These two parameters will play an important role in the development of an industrial device, which indicates the necessity of further works that needs to be conducted in order to reduce them.

Bezati, F., E-mail: feliks.bezati@ensam.e [MAPIE-Laboratoire de Modelisation, Analyse et Prevention des Impacts Environnementaux, Institut ENSAM Savoie Technolac, 4 Rue du Lac Majeur, F-73375 Le Bourget du Lac Cedex (France); IMP/LMM-Ingenierie des Materiaux Polymeres - Laboratoire des Materiaux Macromoleculaires UMR 5223, INSA de Lyon Bat. Jules VERNE, 17, rue Jean Capelle F-69621 Villeurbanne Cedex (France); Froelich, D. [MAPIE-Laboratoire de Modelisation, Analyse et Prevention des Impacts Environnementaux, Institut ENSAM Savoie Technolac, 4 Rue du Lac Majeur, F-73375 Le Bourget du Lac Cedex (France); Massardier, V. [IMP/LMM-Ingenierie des Materiaux Polymeres - Laboratoire des Materiaux Macromoleculaires UMR 5223, INSA de Lyon Bat. Jules VERNE, 17, rue Jean Capelle F-69621 Villeurbanne Cedex (France); Maris, E. [MAPIE-Laboratoire de Modelisation, Analyse et Prevention des Impacts Environnementaux, Institut ENSAM Savoie Technolac, 4 Rue du Lac Majeur, F-73375 Le Bourget du Lac Cedex (France)

2010-04-15T23:59:59.000Z

444

Code verification by static analysis: a mathematical programming ...  

E-Print Network [OSTI]

Thus some X ? L is invariant with respect to the program action if it obeys the .... interpretation [6, 7] allows many types of code analyses (flow analysis, performance analysis ..... In the former case zL = ?L by (50); in the latter case zL = rL by.

2009-09-24T23:59:59.000Z

445

Geothermal well log interpretation state of the art. Final report  

SciTech Connect (OSTI)

An in-depth study of the state of the art in Geothermal Well Log Interpretation has been made encompassing case histories, technical papers, computerized literature searches, and actual processing of geothermal wells from New Mexico, Idaho, and California. A classification scheme of geothermal reservoir types was defined which distinguishes fluid phase and temperature, lithology, geologic province, pore geometry, salinity, and fluid chemistry. Major deficiencies of Geothermal Well Log Interpretation are defined and discussed with recommendations of possible solutions or research for solutions. The Geothermal Well Log Interpretation study and report has concentrated primarily on Western US reservoirs. Geopressured geothermal reservoirs are not considered.

Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

1980-01-01T23:59:59.000Z

446

Can a wormhole be interpreted as an EPR pair?  

E-Print Network [OSTI]

Recently, Maldacena and Susskind arXiv:1306.0533 and Jensen and Karch arXiv:1307.1132 argued that a wormhole can be interpreted as an EPR pair. We point out that a convincing justification of such an interpretation would require a quantitative evidence that correlations between two ends of the wormhole are equal to those between the members of the EPR pair. As long as the existing results do not contain such evidence, the interpretation of wormhole as an EPR pair does not seem justified.

Nikolic, H

2013-01-01T23:59:59.000Z

447

TomoTherapy MLC verification using exit detector data  

SciTech Connect (OSTI)

Purpose: Treatment delivery verification (DV) is important in the field of intensity modulated radiation therapy (IMRT). While IMRT and image guided radiation therapy (IGRT), allow us to create more conformal plans and enables the use of tighter margins, an erroneously executed plan can have detrimental effects on the treatment outcome. The purpose of this study is to develop a DV technique to verify TomoTherapy's multileaf collimator (MLC) using the onboard mega-voltage CT detectors. Methods: The proposed DV method uses temporal changes in the MVCT detector signal to predict actual leaf open times delivered on the treatment machine. Penumbra and scattered radiation effects may produce confounding results when determining leaf open times from the raw detector data. To reduce the impact of the effects, an iterative, Richardson-Lucy (R-L) deconvolution algorithm is applied. Optical sensors installed on each MLC leaf are used to verify the accuracy of the DV technique. The robustness of the DV technique is examined by introducing different attenuation materials in the beam. Additionally, the DV technique has been used to investigate several clinical plans which failed to pass delivery quality assurance (DQA) and was successful in identifying MLC timing discrepancies as the root cause. Results: The leaf open time extracted from the exit detector showed good agreement with the optical sensors under a variety of conditions. Detector-measured leaf open times agreed with optical sensor data to within 0.2 ms, and 99% of the results agreed within 8.5 ms. These results changed little when attenuation was added in the beam. For the clinical plans failing DQA, the dose calculated from reconstructed leaf open times played an instrumental role in discovering the root-cause of the problem. Throughout the retrospective study, it is found that the reconstructed dose always agrees with measured doses to within 1%. Conclusions: The exit detectors in the TomoTherapy treatment systems can provide valuable information about MLC behavior during delivery. A technique to estimate the TomoTherapy binary MLC leaf open time from exit detector signals is described. This technique is shown to be both robust and accurate for delivery verification.

Chen Quan; Westerly, David; Fang Zhenyu; Sheng, Ke; Chen Yu [TomoTherapy Inc., 1240 Deming Way, Madison, Wisconsin 53717 (United States); Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado 80045 (United States); Xinghua Cancer Hospital, Xinghua, Jiangsu 225700 (China); Department of Radiation Oncology, University of California-Los Angeles, Los Angeles, California 90095 (United States); TomoTherapy Inc., 1240 Deming Way, Madison, Wisconsin 53717 (United States)

2012-01-15T23:59:59.000Z

448

INDEPENDENT VERIFICATION SURVEY REPORT FOR ZONE 1 OF THE EAST TENNESSEE TECHNOLOGY PARK IN OAK RIDGE, TENNESSEE  

SciTech Connect (OSTI)

Oak Ridge Associated Universities (ORAU) conducted in-process inspections and independent verification (IV) surveys in support of DOE's remedial efforts in Zone 1 of East Tennessee Technology Park (ETTP) in Oak Ridge, Tennessee. Inspections concluded that the remediation contractor's soil removal and survey objectives were satisfied and the dynamic verification strategy (DVS) was implemented as designed. Independent verification (IV) activities included gamma walkover surveys and soil sample collection/analysis over multiple exposure units (EUs).

King, David A.

2012-08-16T23:59:59.000Z

449

Geochemical fluid characteristics and main achievements about tracer tests at Soultz-sous-Forts (France) 1 EC Contract SES6-CT-2003-502706  

E-Print Network [OSTI]

Geochemical fluid characteristics and main achievements about tracer tests at Soultz Related with Work Package WP1a (Short term fluid circulation tests) and WP1c (Data acquisition) GEOCHEMICAL FLUID CHARACTERISTICS AND MAIN ACHIEVEMENTS ABOUT TRACER TESTS AT SOULTZ-SOUS-FOR√?TS (FRANCE

Boyer, Edmond

450

QUANTIFICATION OF FUGITIVE REACTIVE ALKENE EMISSIONS FROM PETROCHEMICAL PLANTS WITH PERFLUOROCARBON TRACERS.  

SciTech Connect (OSTI)

Recent studies demonstrate the impact of fugitive emissions of reactive alkenes on the atmospheric chemistry of the Houston Texas metropolitan area (1). Petrochemical plants located in and around the Houston area emit atmospheric alkenes, such as ethene, propene and 1,3-butadiene. The magnitude of emissions is a major uncertainty in assessing their effects. Even though the petrochemical industry reports that fugitive emissions of alkenes have been reduced to less than 0.1% of daily production, recent measurement data, obtained during the TexAQS 2000 experiment indicates that emissions are perhaps a factor of ten larger than estimated values. Industry figures for fugitive emissions are based on adding up estimated emission factors for every component in the plant to give a total estimated emission from the entire facility. The dramatic difference between estimated and measured rates indicates either that calculating emission fluxes by summing estimates for individual components is seriously flawed, possibly due to individual components leaking well beyond their estimated tolerances, that not all sources of emissions for a facility are being considered in emissions estimates, or that there are known sources of emissions that are not being reported. This experiment was designed to confirm estimates of reactive alkene emissions derived from analysis of the TexAQS 2000 data by releasing perfluorocarbon tracers (PFTs) at a known flux from a petrochemical plant and sampling both the perfluorocarbon tracer and reactive alkenes downwind using the Piper-Aztec research aircraft operated by Baylor University. PFTs have been extensively used to determine leaks in pipelines, air infiltration in buildings, and to characterize the transport and dispersion of air parcels in the atmosphere. Over 20 years of development by the Tracer Technology Center (TTC) has produced a range of analysis instruments, field samplers and PFT release equipment that have been successfully deployed in a large variety of experiments. PFTs are inert, nontoxic, noncombustible and nonreactive. Up to seven unique PFTs can be simultaneously released, sampled and analyzed and the technology is well suited for determining emission fluxes from large petrochemical facilities. The PFT experiment described here was designed to quantitate alkene emissions from a single petrochemical facility, but such experiments could be applied to other industrial sources or groups of sources in the Houston area.

SENUM,G.I.; DIETZ,R.N.

2004-06-30T23:59:59.000Z

451

Comment submitted by the Air Conditioning, Heating and Refrigeration Institute (AHRI) regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by the Air Conditioning, Heating and Refrigeration Institute (AHRI) regarding the Energy Star Verification Testing Program

452

Comment submitted by the Association of Home Appliance Manufacturers (AHAM) regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by the Association of Home Appliance Manufacturers (AHAM) regarding the Energy Star Verification Testing Program

453

Comment submitted by the North American Association of Food Equipment Manufacturers (NAFEM) regarding the Energy Star Verification Testing Program  

Broader source: Energy.gov [DOE]

This document is a comment submitted by the North American Association of Food Equipment Manufacturers (NAFEM) regarding the Energy Star Verification Testing Program

454

Modeling and Verification of Distributed Generation and Voltage Regulation Equipment for Unbalanced Distribution Power Systems; Annual Subcontract Report, June 2007  

SciTech Connect (OSTI)

This report summarizes the development of models for distributed generation and distribution circuit voltage regulation equipment for unbalanced power systems and their verification through actual field measurements.

Davis, M. W.; Broadwater, R.; Hambrick, J.

2007-07-01T23:59:59.000Z

455

INDEPENDENT VERIFICATION SURVEY OF THE HIGH FLUX BEAM REACTOR DECOMMISSIONING PROJECT OUTSIDE AREAS BROOKHAVEN NATIONAL LABORATORY UPTON, NEW YORK  

SciTech Connect (OSTI)

5098-SR-03-0 FINAL REPORT- INDEPENDENT VERIFICATION SURVEY OF THE HIGH FLUX BEAM REACTOR DECOMMISSIONING PROJECT OUTSIDE AREAS, BROOKHAVEN NATIONAL LABORATORY

P.C. Weaver

2010-12-15T23:59:59.000Z

456

LETTER REPORT INDEPENDENT VERIFICATION OF THE HIGH FLUX BEAM REACTOR DECOMMISSIONING PROJECT FAN HOUSE, BUILDING 704 BNL  

SciTech Connect (OSTI)

5098-LR-01-0 -LETTER REPORT INDEPENDENT VERIFICATION OF THE HIGH FLUX BEAM REACTOR DECOMMISSIONING PROJECT FAN HOUSE, BUILDING 704 BROOKHAVEN NATIONAL LABORATORY

P.C. Weaver

2010-10-22T23:59:59.000Z

457

INTERPRETATION OF AC IMPEDANCE MEASUREMENTS IN SOLIDS* J. Ross Macdonald  

E-Print Network [OSTI]

= INTERPRETATION OF AC IMPEDANCE MEASUREMENTS IN SOLIDS* J. Ross Macdonald Department of Physics Foundation (Grant No. DMR 75-10739). 81 #12;82 PERTINENT PARAMETERS J.R. MACDONALD Figure 1 shows

Macdonald, James Ross

458

DOE interpretations Guide to OSH standards. Update to the Guide  

SciTech Connect (OSTI)

Reflecting Secretary O`Leary`s focus on occupational safety and health, the Office of Occupational Safety is pleased to provide you with the latest update to the DOE Interpretations Guide to OSH Standards. This Guide was developed in cooperation with the Occupational Safety and Health Administration, which continued its support during this last revision by facilitating access to the interpretations found on the OSHA Computerized Information System (OCIS). This March 31, 1994 update contains 123 formal interpretation letters written by OSHA. As a result of the unique requests received by the 1-800 Response Line, this update also contains 38 interpretations developed by DOE. This new occupational safety and health information adds still more important guidance to the four volume reference set that you presently have in your possession.

Not Available

1994-03-31T23:59:59.000Z

459

Bťla Bartůk and the Natural Interpretation of Music  

E-Print Network [OSTI]

Bartůk's fascination with Nature was religious in its devotion. This paper relates Bartůk's love of Nature and folksong with musical interpretation. I explore Bartůk's folk music arrangements for piano with extant recordings ...

Bruggeman, Daniel Jared

2013-05-31T23:59:59.000Z

460

DOE interpretations Guide to OSH standards. Update to the Guide  

SciTech Connect (OSTI)

Reflecting Secretary O`Leary`s focus on occupational safety and health, the Office of Occupational Safety is pleased to provide you with the latest update to the DOE Interpretations Guide to OSH Standards. This Guide was developed in cooperation with the Occupational Safety and Health Administration, which continued its support during this last revision by facilitating access to the interpretations found on the OSHA Computerized Information System (OCIS). This March 31, 1994 update contains 123 formal interpretation letters written OSHA. As a result of the unique requests received by the 1-800 Response Line, this update also contains 38 interpretations developed by DOE. This new occupational safety and health information adds still more important guidance to the four volume reference set that you presently have in your possession.

Not Available

1994-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

APS Tcl/Tk library and interpreter extensions  

SciTech Connect (OSTI)

This document serves as a User`s Manual and Reference for the library of Tcl and Tk procedures produced by the Operations Analysis Group. Also covered are compiled interpreter extensions.

Saunders, C.; Borland, M.

1995-11-27T23:59:59.000Z

462

An Analyst's Assistant for the Interpretation of Vehicle Track Data  

E-Print Network [OSTI]

This report describes the Analyst's Assistant, a software system for language-interactive, collaborative user-system interpretation of events, specifically targeting vehicle events that can be recognized on the basis of ...

Borchardt, Gary

2014-10-08T23:59:59.000Z

463

Bounds Analysis by Abstract Interpretation Xiaolei Qian Allen Goldberg  

E-Print Network [OSTI]

representations fo* *r these abstract types. In this work an abstract context, i.e. model, consists * Bounds Analysis by Abstract@csl.sri.com goldberg@kestrel.edu Abstract Abstract interpretation

Goldberg, Allen

464

Interpreting slavery at plantation museums and historic sites  

E-Print Network [OSTI]

Interpreting slavery can be a difficult and controversial task. Recent literature has shown that the majority of plantation museums and historic sites, which historically enslaved African-Americans, are currently ignoring the institution of slavery...

Durden, Amber K

2003-01-01T23:59:59.000Z

465

90Sr liquid scintillation urine analysis utilizing different approaches for tracer recovery.  

SciTech Connect (OSTI)

90Sr is one of the isotopes most commonly produced by nuclear fission. This medium lived isotope presents serious challenges to radiation workers, the environment, and following a nuclear event, the general public. Methods of identifying this nuclide have been in existence for a number of years (e.g. Horwitz, E.P. [1], Maxwell, S.L.[2], EPA 905.0 [3]) which are time consuming, requiring a month or more for full analysis. This time frame is unacceptable in the present security environment. It is therefore important to have a dependable and rapid method for the determination of Sr. The purposes of this study are to reduce analysis time to less than half a day by utilizing a single method of radiation measurement while continuing to yield precise results. This paper presents findings on three methods that can meet this criteria; (1) stable Sr carrier, (2) 85Sr by gamma spectroscopy, and (3) 85Sr by LSC. Two methods of analyzing and calculating the 85Sr tracer recovery were investigated (gamma spectroscopy and a low energy window-Sr85LEBAB by LSC) as well as the use of two different types of Sr tracer (85Sr and stable Sr carrier). Three separate stock blank urine samples were spiked with various activity levels of 239Pu, 137Cs, 90Sr /90Y to determine the effectiveness of the Eichrome Sr-spec%C2%AE resin 2mL extractive columns. The objective was to compare the recoveries of 85Sr versus a stable strontium carrier, attempt to compare the rate at which samples can be processed by evaluating evaporation, neutralization, and removing the use of another instrument (gamma spectrometer) by using the LSC spectrometer to obtain 85Sr recovery. It was found that when using a calibration curve comprised of a different cocktail and a non-optimum discriminator setting reasonable results (bias of %C2%B1 25%) were achieved. The results from spiked samples containing 85Sr demonstrated that a higher recovery is obtained when using gamma spectroscopy (89-95%) than when using the LEB window from LSC (120-470%). The high recovery for 85Sr by LSC analysis may be due to the interference/cross talk from the alpha region since alpha counts were observed in all sample sets. After further investigation it was determined that the alpha counts were due to 239Pu breakthrough on the Sr-spec%C2%AE column. This requires further development to purify the Sr before an accurate tracer recovery determination can be made. Sample preparation times varied and ranged from 4-6 hours depending on the specific sample preparation process. The results from the spiked samples containing stable strontium nitrate Sr(NO3)2 carrier demonstrate that gravimetric analysis yields the most consistent high recoveries (97-101%) when evaporation is carefully performed. Since this method did not have a variation on the tracer recovery method, the samples were counted in 1) LEB/Alpha/Beta mode optimized for Sr-90, 2) DPM for Sr-90, and 3) general LEB/Alpha/Beta mode. The results (from the known) ranged from 79-104%, 107-177%, and 85-89% for 1, 2, and 3 respectively. Counting the prepared samples in a generic low energy beta/alpha/beta protocol yielded more accurate and consistent results and also yielded the shortest sample preparation turn-around-time of 3.5 hours.

Piraner, Olga [Centers for Disease Control and Prevention, Atlanta, GA; Preston, Rose T. [Sandia Staffing Alliance, LLC, Albuquerque, NM; Shanks, Sonoya Toyoko; Jones, Robert [Centers for Disease Control and Prevention, Atlanta, GA

2010-08-01T23:59:59.000Z

466

Mixing properties in the advection of passive tracers via recurrences and extreme value theory  

E-Print Network [OSTI]

In this paper we characterize the mixing properties in the advection of passive tracers by exploiting the extreme value theory for dynamical systems. With respect to classical techniques directly related to the Poincar\\'e recurrences analysis, our method provides reliable estimations of the characteristic mixing times and distinguishes between barriers and unstable fixed points. The method is based on a check of convergence for extreme value laws on finite datasets. We define the mixing times in terms of the shortest time intervals such that extremes converge to the asymptotic (known) parameters of the Generalized Extreme Value distribution. Our technique is suitable for applications in the analysis of other systems where mixing time scales need to be determined and limited datasets are available.

Davide Faranda; Xavier Leoncini; Sandro Vaienti

2014-02-16T23:59:59.000Z

467

John Stuart Mill's Sanction Utilitarianism: A Philosophical and Historical Interpretation  

E-Print Network [OSTI]

..................................................................................................... 271 1 CHAPTER I INTRODUCTION This dissertation will argue that John Stuart Mill (hereafter Mill) is best interpreted as a sanction utilitarian. To support this claim, I will provide arguments that that are both philosophical... Utilitarianism. Third, I will outline the dissertation as a whole in order to describe how each chapter supports the claim that Mill is best interpreted as a sanction utilitarian. Basic terminology and the varieties of utilitarianism As is common...

Wright, David

2014-04-24T23:59:59.000Z

468

Visitor response to interpretation at selected historic sites  

E-Print Network [OSTI]

VISITOR RESPONSE TO INTERPRETATION AT SELECTED HISTORIC SITES A Thesis by LUCINDA LOU IRWIN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1978... Major Subject: Recreation and Resources Development VISITOR RESPONSE TO INTERPRETATION AT SELECTED HISTORIC SITES A Thesis by LUCINDA LOU IRWIN Approved as to style and content by: Chairman ommittee He of Department Membe Mem May 1978 I g Bii1...

Irwin, Lucinda Lou

1978-01-01T23:59:59.000Z

469

Automating Elementary Interpretations Harald Zankl, Sarah Winkler, and Aart Middeldorp  

E-Print Network [OSTI]

-base elementary interpretation function (FBI) of depth 0 is a linear function f(x) = 1 i n xifi + f0 and an FBI) is an FBI of depth d, and b 2 is a fixed natural number. We use the abbreviations f(x) = 1 i n xifi + f0 and ^f(x) = 1 i n xi ^fi + ^f0. An FBI algebra has N 1 as carrier and FBIs as interpretation functions

Middeldorp, Aart

470

Methodology for computational fluid dynamics code verification/validation  

SciTech Connect (OSTI)

The issues of verification, calibration, and validation of computational fluid dynamics (CFD) codes has been receiving increasing levels of attention in the research literature and in engineering technology. Both CFD researchers and users of CFD codes are asking more critical and detailed questions concerning the accuracy, range of applicability, reliability and robustness of CFD codes and their predictions. This is a welcomed trend because it demonstrates that CFD is maturing from a research tool to the world of impacting engineering hardware and system design. In this environment, the broad issue of code quality assurance becomes paramount. However, the philosophy and methodology of building confidence in CFD code predictions has proven to be more difficult than many expected. A wide variety of physical modeling errors and discretization errors are discussed. Here, discretization errors refer to all errors caused by conversion of the original partial differential equations to algebraic equations, and their solution. Boundary conditions for both the partial differential equations and the discretized equations will be discussed. Contrasts are drawn between the assumptions and actual use of numerical method consistency and stability. Comments are also made concerning the existence and uniqueness of solutions for both the partial differential equations and the discrete equations. Various techniques are suggested for the detection and estimation of errors caused by physical modeling and discretization of the partial differential equations.

Oberkampf, W.L.; Blottner, F.G.; Aeschliman, D.P.

1995-07-01T23:59:59.000Z

471

Uncertainty Estimation Improves Energy Measurement and Verification Procedures  

SciTech Connect (OSTI)

Implementing energy conservation measures in buildings can reduce energy costs and environmental impacts, but such measures cost money to implement so intelligent investment strategies require the ability to quantify the energy savings by comparing actual energy used to how much energy would have been used in absence of the conservation measures (known as the baseline energy use). Methods exist for predicting baseline energy use, but a limitation of most statistical methods reported in the literature is inadequate quantification of the uncertainty in baseline energy use predictions. However, estimation of uncertainty is essential for weighing the risks of investing in retrofits. Most commercial buildings have, or soon will have, electricity meters capable of providing data at short time intervals. These data provide new opportunities to quantify uncertainty in baseline predictions, and to do so after shorter measurement durations than are traditionally used. In this paper, we show that uncertainty estimation provides greater measurement and verification (M&V) information and helps to overcome some of the difficulties with deciding how much data is needed to develop baseline models and to confirm energy savings. We also show that cross-validation is an effective method for computing uncertainty. In so doing, we extend a simple regression-based method of predicting energy use using short-interval meter data. We demonstrate the methods by predicting energy use in 17 real commercial buildings. We discuss the benefits of uncertainty estimates which can provide actionable decision making information for investing in energy conservation measures.

Walter, Travis; Price, Phillip N.; Sohn, Michael D.

2014-05-14T23:59:59.000Z

472

Enrichment Assay Methods for a UF6 Cylinder Verification Station  

SciTech Connect (OSTI)

International Atomic Energy Agency (IAEA) inspectors currently perform periodic inspections at uranium enrichment plants to verify UF6 cylinder enrichment declarations. Measurements are typically performed with handheld high-resolution sensors on a sampling of cylinders taken to be representative of the facilityís entire cylinder inventory. These enrichment assay methods interrogate only a small fraction of the total cylinder volume, and are time-consuming and expensive to execute for inspectors. Pacific Northwest National Laboratory (PNNL) is developing an unattended measurement system capable of automated enrichment measurements over the full volume of Type 30B and Type 48 cylinders. This Integrated Cylinder Verification System (ICVS) could be located at key measurement points to positively identify each cylinder, measure its mass and enrichment, store the collected data in a secure database, and maintain continuity of knowledge on measured cylinders until IAEA inspector arrival. The focus of this paper is the development of nondestructive assay (NDA) methods that combine ďtraditionalĒ enrichment signatures (e.g. 185-keV emission from U-235) and more-penetrating ďnon-traditionalĒ signatures (e.g. high-energy neutron-induced gamma rays spawned primarily from U-234 alpha emission) collected by medium-resolution gamma-ray spectrometers (i.e. sodium iodide or lanthanum bromide). The potential of these NDA methods for the automated assay of feed, tail and product cylinders is explored through MCNP modeling and with field measurements on a cylinder population ranging from 0.2% to 5% in U-235 enrichment.

Smith, Leon E.; Jordan, David V.; Misner, Alex C.; Mace, Emily K.; Orton, Christopher R.

2010-11-30T23:59:59.000Z

473

Cold fusion verification. Final report for period ending 1989  

SciTech Connect (OSTI)

The objective of this work to verify and reproduce experimental observations of Cold Nuclear Fusion (CNF), as originally reported in 1989. The method was to start with the original report and add such additional information as became available to build a set of operational electrolytic CNF cells. Verification was to be achieved by first observing cells for neutron production, and for those cells that demonstrated a nuclear effect, careful calorimetric measurements were planned. The authors concluded, after laboratory experience, reading published work, talking with others in the field, and attending conferences, that CNF probably is chimera and will go the way of N-rays and polywater. The neutron detector used for these tests was a completely packaged unit built into a metal suitcase that afforded electrostatic shielding for the detectors and self-contained electronics. It was battery-powered, although it was on charge for most of the long tests. The sensor element consists of He detectors arranged in three independent layers in a solid moderating block. The count from each of the three layers as well as the sum of all the detectors were brought out and recorded separately. The neutron measurements were made with both the neutron detector and the sample tested in a cave made of thick moderating material that surrounded the two units on the sides and bottom.

North, M.H.; Mastny, G.F.; Wesley, E.J.

1991-03-01T23:59:59.000Z

474

Technology verification phase. Dynamic isotope power system. Final report  

SciTech Connect (OSTI)

The Phase I requirements of the Kilowatt Isotope Power System (KIPS) program were to make a detailed Flight System Conceptual Design (FSCD) for an isotope fueled organic Rankine cycle power system and to build and test a Ground Demonstration System (GDS) which simulated as closely as possible the operational characteristics of the FSCD. The activities and results of Phase II, the Technology Verification Phase, of the program are reported. The objectives of this phase were to increase system efficiency to 18.1% by component development, to demonstrate system reliability by a 5000 h endurance test and to update the flight system design. During Phase II, system performance was improved from 15.1% to 16.6%, an endurance test of 2000 h was performed while the flight design analysis was limited to a study of the General Purpose Heat Source, a study of the regenerator manufacturing technique and analysis of the hardness of the system to a laser threat. It was concluded from these tests that the GDS is basically prototypic of a flight design; all components necessary for satisfactory operation were demonstrated successfully at the system level; over 11,000 total h of operation without any component failure attested to the inherent reliability of this type of system; and some further development is required, specifically in the area of performance. (LCL)

Halsey, D.G.

1982-03-10T23:59:59.000Z

475

Using conversions of chemically reacting tracers for numerical determination of temperature profiles in flowing systems and temperature histories in batch systems  

SciTech Connect (OSTI)

This report presents the mathematical bases for measuring internal temperatures within batch and flowing systems using chemically reacting tracers. This approach can obtain temperature profiles of plug-flow systems and temperature histories within batch systems. The differential equations for reactant conversion can be converted into Fredholm integral equations of the first kind. The experimental variable is the tracer-reaction activation energy. When more than one tracer is used, the reactions must have different activation energies to gain information. In systems with temperature extrema, multiple solutions for the temperature profiles or histories can exist, When a single parameter in the temperature distribution is needed, a single-tracer test may furnish this information. For multi-reaction tracer tests, three Fredholm equations are developed. Effects of tracer-reaction activation energy, number of tracers used, and error in the data are evaluated. The methods can determine temperature histories and profiles for many existing systems, and can be a basis for analysis of the more complicated dispersed-flow systems. An alternative to using the Fredholm-equation approach is the use of an assumed temperature- distribution function and incorporation of this function into the basic integral equation describing tracer behavior. The function contains adjustable parameters which are optimized to give the temperature distribution. The iterative Fredholm equation method is tested to see what is required to discriminate between two models of the temperature behavior of Hot Dry Rock (HDR) geothermal reservoirs. Experimentally, ester and amide hydrolyses are valid HDR tracer reactions for measuring temperatures in the range 75-100{degrees}C. Hydrolyses of bromobenzene derivatives are valid HDR tracer reactions for measuring temperatures in the range 150-275{degrees}C.

Brown, L.F.; Chemburkar, R.M.; Robinson, B.A.; Travis, B.J.

1996-04-01T23:59:59.000Z

476

AN INTEGRATED APPROACH TO CHARACTERIZING BYPASSED OIL IN HETEROGENEOUS AND FRACTURED RESERVOIRS USING PARTITIONING TRACERS  

SciTech Connect (OSTI)

We explore the use of efficient streamline-based simulation approaches for modeling and analysis partitioning interwell tracer tests in heterogeneous and fractured hydrocarbon reservoirs. The streamline approach is generalized to model water injection in naturally fractured reservoirs through the use of a dual media approach. The fractures and matrix are treated as separate continua that are connected through a transfer function, as in conventional finite difference simulators for modeling fractured systems. A detailed comparison with a commercial finite difference simulator shows very good agreement. Furthermore, an examination of the scaling behavior of the computation time indicates that the streamline approach is likely to result in significant savings for large-scale field applications. We also propose a novel approach to history matching finite-difference models that combines the advantage of the streamline models with the versatility of finite-difference simulation. In our approach, we utilize the streamline-derived sensitivities to facilitate history matching during finite-difference simulation. The use of finite-difference model allows us to account for detailed process physics and compressibility effects. The approach is very fast and avoids much of the subjective judgments and time-consuming trial-and-errors associated with manual history matching. We demonstrate the power and utility of our approach using a synthetic example and two field examples. Finally, we discuss several alternative ways of using partitioning interwell tracer tests (PITTs) in oil fields for the calculation of oil saturation, swept pore volume and sweep efficiency, and assess the accuracy of such tests under a variety of reservoir conditions.

Akhil Datta-Gupta

2004-08-01T23:59:59.000Z

477

{sup 41}Ca as a tracer for calcium uptake and deposition in heart tissue during ischemia and reperfusion  

SciTech Connect (OSTI)

We have developed techniques and are commencing experiments using enriched {sup 41}Ca as a tracer in isolated rabbit heart preparations. The aims of the study are to measure calcium uptake and deposition in response to cardiac ischemia and reperfusion, and to investigate events and mechanism leading to irreversible myocyte injury.

Southon, J.R. [Lawrence Livermore National Lab., CA (United States); Bishop, M.S.; Kost, G.J. [California Univ., Davis, CA (United States). Dept. of Medical Pathology and Biomedical Engineering

1993-09-17T23:59:59.000Z

478

Self-consistent magnetic properties of magnetite tracers optimized for magnetic particle imaging measured by ac susceptometry,  

E-Print Network [OSTI]

Self-consistent magnetic properties of magnetite tracers optimized for magnetic particle imaging measured by ac susceptometry, magnetorelaxometry and magnetic particle spectroscopy Frank Ludwig a , Hilke. Krishnan b,n a Institute of Electrical Measurement and Fundamental Electrical Engineering, TU Braunschweig

Krishnan, Kannan M.

479

Thorium isotopes as tracers of particles dynamics and deep water circulation in the Indian sector of the  

E-Print Network [OSTI]

Thorium isotopes as tracers of particles dynamics and deep water circulation in the Indian sector to study the distribution of thorium isotopes (234 Th, 232 Th and 230 Th) in the water column of the Indian in surface water (0­100 m) and a model was applied to estimate a residence time relative to the thorium

Coppola, Laurent

480

Effects from influent boundary conditions on tracer migration and spatial variability features in intermediate-scale experiments  

SciTech Connect (OSTI)

In previous unsaturated transport studies at Los Alamos dispersion coefficients were estimated to be higher close to the tracer source than at greater distances from the source. Injection of tracers through discrete influent outlets could have accounted for those higher dispersions. Also, a lack of conservation of mass of the tracers was observed and suspected to be due to spatial variability in transport. In the present study experiments were performed under uniform influent (ponded) conditions in which breakthrough of tracers was monitored at four locations at each of four depths. All other conditions were similar to those of the unsaturated transport experiments. A comparison of results from these two sets of experiments indicates differences in the parameter estimates. Estimates were made for the dispersion coefficient and the retardation factor by the one-dimensional steady flow computer code, CFITIM. Estimates were also made for mass and for velocity and the dispersion coefficient by the method of moments. The dispersion coefficient decreased with depth under discrete influent application and increased with depth under ponded influent application. Retardation was predicted better under the discrete influent application than under ponded influent application. Differences in breakthroughs and in estimated parameters among locations at the same depth were observed under ponded influent application. Those differences indicate that there is a lack of conservation of mass as well as significant spatial variability across the experimental domain. 14 refs., 9 figs., 8 tabs.

Fuentes, H.R.; Polzer, W.L.; Springer, E.P.

1987-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "tracer interpretation verification" 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

Isotopic Tracer Studies of Propane Reactions on H-ZSM5 Zeolite Joseph A. Biscardi and Enrique Iglesia*  

E-Print Network [OSTI]

Isotopic Tracer Studies of Propane Reactions on H-ZSM5 Zeolite Joseph A. Biscardi and Enrique unlabeled products from mixtures of propene and propane-2-13C reactants. Aromatic products of propane-2-13C-Parmer) that allowed differential reactor operation (propane reactions were

Iglesia, Enrique

482

Verification of the integrity of barriers using gas diffusion  

SciTech Connect (OSTI)

In-situ barrier materials and designs are being developed for containment of high risk contamination as an alternative to immediate removal or remediation. The intent of these designs is to prevent the movement of contaminants in either the liquid or vapor phase by long-term containment, essentially buying time until the contaminant depletes naturally or a remediation can be implemented. The integrity of the resultant soil-binder mixture is typically assessed by a number of destructive laboratory tests (leaching, compressive strength, mechanical stability with respect to wetting and freeze-thaw cycles) which as a group are used to infer the likelihood of favorable long-term performance of the barrier. The need exists for a minimally intrusive yet quantifiable methods for assessment of a barrier`s integrity after emplacement, and monitoring of the barrier`s performance over its lifetime. Here, the authors evaluate non-destructive measurements of inert-gas diffusion (specifically, SF{sub 6}) as an indicator of waste-form integrity. The goals of this project are to show that diffusivity can be measured in core samples of soil jet-grouted with Portland cement, validate the experimental method through measurements on samples, and to calculate aqueous diffusivities from a series of diffusion measurements. This study shows that it is practical to measure SF{sub 6} diffusion rates in the laboratory on samples of grout (Portland cement and soil) typical of what might be used in a barrier. Diffusion of SF{sub 6} through grout (Portland cement and soil) is at least an order of magnitude slower than through air. The use of this tracer should be sensitive to the presence of fractures, voids, or other discontinuities in the grout/soil structure. Field-scale measurements should be practical on time-scales of a few days.

Ward, D.B. [SPECTRA Research Inst., Albuquerque, NM (United States); Williams, C.V. [Sandia National Labs., Albuquerque, NM (United States). Environmental Restoration Technologies Dept.

1997-06-01T23:59:59.000Z

483

Interim Letter Report - Verification Survey of Partial Grids H19, J21, J22, X20, and X21 at the David Witherspoon, Inc. 1630 Site, Knoxville Tennessee  

SciTech Connect (OSTI)

Conduct verification surveys of available grids at the David Witherspoon Incorporated 1630 Site (DWI 1630) in Knoxville, Tennessee. The IVT conducted verification activities of partial grids H19, J21, J22, X20, and X21.

P.C. Weaver

2008-03-19T23:59:59.000Z

484

The thermionic fuel element verification program: Technical accomplishments and goals  

SciTech Connect (OSTI)

The goal of the Thermionic Fuel Element Verification Program (TFEVP) is to demonstrate the technological readiness of a thermionic fuel element in a thermionic reactor having an electric power output in the 0.5- to 5-MW(electric) range and a full-power life of 7 yr. The TFEVP has made significant progress in developing components capable of withstanding the required neutron fluence (4 x 10[sup 22] n/cm[sup 2], E > 0. 1 MeV) and the required burnup (5.3%) of a 2-MW(electric) system. Technology developed under the TFEVP also supports the 5- to 40-kW(electric) thermionic systems currently of interest to the Strategic Defense Initiative Organization and the US Air Force. The fast-neutron flux in certain 5- to 40-kW(electric) systems is up to a factor of 7 less than that in 0.5- to 5-MW(electric) systems. Component technology that has been developed for 0.5- to 5-MW(electric) systems will thus be suitable for use in long-life, high-performance, 5- to 40-kW(electric) systems. Components that are being developed by the TFEVP include insulator seals, sheath insulators, fueled emitters, cesium reservoirs, and inter- connective TFE components. In addition, the TFEVP has created a preliminary 2-MW(electric) system design and is currently evaluating converter performance under various conditions. Prototypical TFEs are also being tested. The TFEVP is developing accurate converter-performance models that are correlated to observed test data.

Houts, M.G. (Los Alamos National Lab., NM (United States)); Wharton, W.R. Jr. (Department of Energy, Germantown, MD (United States)); Begg, L.L. (General Atomics, San Diego, CA (United States)); Lawrence, L.A. (Westinghouse Hanford Company, Richland, WA (United States))

1993-01-01T23:59:59.000Z

485

The Joint Owners' Group Program on MOV Periodic Verification  

SciTech Connect (OSTI)

To address long-term motor operated valve (MOV) performance, the Babcock and Wilcox, Boiling Water Reactor, Combustion Engineering and Westinghouse Groups (B and WOG, BWROG, CEOG and WOG) teamed in 1997 to form the Joint Group (JOG) MOV Periodic Verification (PV) Program. This program is nearing completion, with 98 of the 103 operating U.S. reactor units participating. The goal of the program is to provide a justified approach for periodically testing MOVs, that addresses potential degradation. The program defines an interim approach that specifies periodic tests without flow and differential pressure (DP), at a frequency determined by the s risk significance and margin. To justify this approach, each participating plant is also DP testing 2 valves per unit. Each valve is tested three times over five years, with at least one year between tests. The data are evaluated jointly to confirm or adjust the initial guidance. The majority of the tests are complete and conclusions are coming into focus. For gate valves, when the valve factor is initially low, increases can occur between one test and a later test. One common way that the valve factor becomes low is disassembling and reassembling the valve. The data show that, following valve disassembly and re-assembly, the valve factor tends to be reduced, and it tends to increase in subsequent service. Outside of the valves disassembled and reassembled, some gate valves have low valve factors apparently because the valves are not stroked under DP conditions in service. For butterfly valves, there have been no observations of degradation in bearing friction coefficient. A few valves with bronze bearings in raw (untreated) water service have shown significant variations in friction, but they tend to be a mixture of increases and decreases with no pattern of degradation. Globe valves, both unbalanced and balanced, tend to show a constant valve factor with no indication of degradation. (authors)

Damerell, Paul S.; Spears, Todd A. [MPR Associates Inc., 140 Mustang Circle, Simpsonville, SC 29681 (United States)

2002-07-01T23:59:59.000Z

486

The EPRI/DOE Utility Wind Turbine Performance Verification Program  

SciTech Connect (OSTI)

In 1992, the Electric Power Research Institute (EPRI) and the US Department of Energy (DOE) initiated the Utility Wind Turbine Performance Verification Program (TVP). This paper provides an overview of the TVP, its purpose and goals, and the participating utility projects. Improved technology has significantly reduced the cost of energy from wind turbines since the early 1980s. In 1992, turbines were producing electricity for about $0.07--$0.09/kilowatt-hour (kWh) (at 7 m/s [16 mph sites]), compared with more than $0.30/kWh in 1980. Further technology improvements were expected to lower the cost of energy from wind turbines to $0.05/kWh. More than 17,000 wind turbines, totaling more than 1,500 MW capacity, were installed in the US, primarily in California and Hawaii. The better wind plants had availabilities above 95%, capacity factors exceeding 30%, and operation and maintenance costs of $0.01/kWh. However, despite improving technology, EPRI and DOE recognized that utility use of wind turbines was still largely limited to turbines installed in California and Hawaii during the 1980s. Wind resource assessments showed that other regions of the US, particularly the Midwest, had abundant wind resources. EPRI and DOE sought to provide a bridge from utility-grade turbine development programs under way to commercial purchases of the wind turbines. The TVP was developed to allow utilities to build and operate enough candidate turbines to gain statistically significant operating and maintenance data.

Calvert, S.; Goldman, P. [Department of Energy, Washington, DC (United States); DeMeo, E.; McGowin, C. [Electric Power Research Inst., Palo Alto, CA (United States); Smith, B.; Tromly, K. [National Renewable Energy Lab., Golden, CO (United States)

1997-01-01T23:59:59.000Z

487

A "Lorentz-Poincare"-Type Interpretation of Relativistic Gravitation  

E-Print Network [OSTI]

The nature of 'time', 'space' and 'reality' are to large extent dependent on our interpretation of Special (SRT) and General Relativity Theory (GRT). In SRT essentially two distinct interpretations exist; the "geometrical" interpretation by Einstein based on the Principle of Relativity and the Invariance of the velocity of light and, the "physical" Lorentz-Poincar\\'e interpretation with underpinning by rod contractions, clock slowing and light synchronization, see e.g. (Bohm 1965, Bell 1987). It can be questioned whether the "Lorentz-Poincar\\'e"-interpretation of SRT can be continued into GRT. We have shown that till first Post-Newtonian order this is indeed possible (Broekaert 2004). This requires the introduction of gravitationally modified Lorentz transformations, with an intrinsical spatially-variable speed of light $c(r)$, a scalar scaling field $\\Phi$ and induced velocity field $w$. Still the invariance of the locally observed velocity of light is maintained (Broekaert 2005). The Hamiltonian description of particles and photons recovers the 1-PN approximation of GRT. At present we show the model does obey the Weak Equivalence Principle from a fixed perspective, and that the implied acceleration transformations are equivalent with those of GRT.

Jan; Broekaert

2005-10-05T23:59:59.000Z

488

A Bottom-Up Approach to Verification of Hybrid Model-Based Hierarchical Controllers with application to Underwater Vehicles  

E-Print Network [OSTI]

A Bottom-Up Approach to Verification of Hybrid Model-Based Hierarchical Controllers with application to Underwater Vehicles M. O'Connor, S. Tangirala, R. Kumar, S. Bhattacharyya, M. Sznaier and L.E. Holloway Abstract -- We present a systematic method of verification for a hierarchical hybrid system

Kumar, Ratnesh

489

Requirements Verification Report AN Farm to 200E Waste Transfer System for Project W-314 Tank Farm Restoration and Safe Operations  

SciTech Connect (OSTI)

This Requirements Verification Report (RVR) for Project W-314 ''AN Farm to 200E Waste Transfer System'' package provides documented verification of design compliance to all the applicable Project Development Specification (PDS) requirements. Additional PDS requirements verification will be performed during the project's procurement, construction, and testing phases, and the RVR will be updated to reflect this information as appropriate.

MCGREW, D.L.

1999-09-28T23:59:59.000Z

490

DOE interpretations Guide to OSH standards. Update to the Guide  

SciTech Connect (OSTI)

Reflecting Secretary O`Leary`s focus on occupational safety and health, the Office of Occupational Safety is pleased to provide you with the latest update to the DOE Interpretations Guide to OSH Standards. This Guide was developed in cooperation with the Occupational Safety and Health Administration, which continued it`s support during this last revision by facilitating access to the interpretations found on the OSHA Computerized Information System (OCIS). This March 31, 1994 update contains 123 formal in letter written by OSHA. As a result of the unique requests received by the 1-800 Response Line, this update also contains 38 interpretations developed by DOE. This new occupational safety and health information adds still more important guidance to the four volume reference set that you presently have in your possession.

Not Available

1994-03-31T23:59:59.000Z

491

Measurement of HVAC system performance and local ventilation using passive perfluorocarbon tracer technology  

SciTech Connect (OSTI)

In April of 1993, two (2) perfluorocarbon tracer (PFT) ventilation/indoor air quality assessment tests were performed in the Gleeson Hall building of the SUNY Farmingdale campus. The building was being modified, in part, as a result of significant occupant complaints of perceived poor air quality. The four story building had a basement first floor with air supplied normally by an HVAC system labelled as AC1. During this study, AC1 was inoperational and the basement interior rooms (walls) were primarily gone; the other three floors were still being used for classes. It is possible that a sense of poor air quality may have been perceived by first-floor occupants because they were working in the basement, but this issue could not be addressed. The second floor had two (2) lecture halls--Rm 202 (handled by AC4) and Rm 204 (handled by AC5); the balance of the second floor interior rooms and corridors was split between two other air handling systems, AC2 for the west side of the building and AC3 for the east side. The remaining 3rd and 4th floors were also split about evenly between AC2 and AC3. The perimeter rooms, equipped with wall units having their own outside air (OA) source plus centralized return air (RA) bypasses, were not included in this testing which was restricted to the basement floor (1st floor) and the four operating air handling systems, AC2 to AC5, during Test 1 and only AC2 to AC5 during Test 2. Two types of tests were performed using the full suite of 5 PFT types available. The first test was designed to measure the infiltration, exfiltration, and air exchange between the 5 AC zones above and the second test used the 5th tracer, which had been in the basement, as a distributed source throughout the four other zones to act as a surrogate pollutant source. This report provides final conclusions of both tests and suggestions regarding its usefulness in similar building ventilation and indoor air quality assessments.

Dietz, R.N.; Goodrich, R.W.

1995-06-01T23:59:59.000Z

492

Logic and transistor circuit verification using regression testing and hierarchical recursive learning  

E-Print Network [OSTI]

2670 c3540, opt c3540 c5315, opt c5315 c6288, opt c6288 c7552, opt c7552 RLI 10 73 48 148 30 20 144 Re@. Test 14 26 RL ATPG 14 385 12 22 0 190 6 154 2 572 17 2787 0 other Total 16 28 473 87 376 12 14 168 646 2819 205... Algorithm of Verifast C. Learning at Level One D. Potential Equivalent Node Identification E. Potential Equivalent Node Checking F. Final Verification 10 12 14 15 17 20 22 IV LOGIC TO TRANSISTOR CIRCUIT VERIFICATION vu CHAPTER Page A. Review...

Shao, Li

1996-01-01T23:59:59.000Z

493

Point-to-Point Verification of Monitored Sensors at Reynolds Army Clinic and Hospital Final Report  

E-Print Network [OSTI]

to approximately 1.0 in. H 2 O. Supply fan speeds began decreasing once their static pressure setpoints were satisfied. Two static pressure sensors did not pass verification. ESL recommended that the sensors be cleaned in the same manner as the air flow... which were identified during the verification process be given immediate attention. 1. Replace return air humidity sensors for AHU-155, AHU-245, AHU-345, and AHU-355. 2. Replace supply air humidity sensors for AHU-225 and AHU-226. 3. Clean and...

Martinez, J.; Linenschmidt, S.; Turner, D.

494

Educational Technology Improves ECG Interpretation of Acute Myocardial Infarction among Medical Students and Emergency Medicine Residents  

E-Print Network [OSTI]

Technology Improves ECG Interpretation Education. AAMCheartdisease. 2. Ripa, MS. The ECG as decision support inEducational Technology Improves ECG Interpretation of Acute

Pourmand, Ali; Tanski, Mary; Davis, Steven; Shokoohi, Hamid; Lucas, Raymond; Zaver, Fareen

2015-01-01T23:59:59.000Z

495

Radionuclide Inventory Distribution Project Data Evaluation and Verification White Paper  

SciTech Connect (OSTI)

Testing of nuclear explosives caused widespread contamination of surface soils on the Nevada Test Site (NTS). Atmospheric tests produced the majority of this contamination. The Radionuclide Inventory and Distribution Program (RIDP) was developed to determine distribution and total inventory of radionuclides in surface soils at the NTS to evaluate areas that may present long-term health hazards. The RIDP achieved this objective with aerial radiological surveys, soil sample results, and in situ gamma spectroscopy. This white paper presents the justification to support the use of RIDP data as a guide for future evaluation and to support closure of Soils Sub-Project sites under the purview of the Federal Facility Agreement and Consent Order. Use of the RIDP data as part of the Data Quality Objective process is expected to provide considerable cost savings and accelerate site closures. The following steps were completed: - Summarize the RIDP data set and evaluate the quality of the data. - Determine the current uses of the RIDP data and cautions associated with its use. - Provide recommendations for enhancing data use through field verification or other methods. The data quality is sufficient to utilize RIDP data during the planning process for site investigation and closure. Project planning activities may include estimating 25-millirem per industrial access year dose rate boundaries, optimizing characterization efforts, projecting final end states, and planning remedial actions. In addition, RIDP data may be used to identify specific radionuclide distributions, and augment other non-radionuclide dose rate data. Finally, the RIDP data can be used to estimate internal and external dose rates. The data quality is sufficient to utilize RIDP data during the planning process for site investigation and closure. Project planning activities may include estimating 25-millirem per industrial access year dose rate boundaries, optimizing characterization efforts, projecting final end states, and planning remedial actions. In addition, RIDP data may be used to identify specific radionuclide distributions, and augment other non-radionuclide dose rate data. Finally, the RIDP data can be used to estimate internal and external dose rates.

NSTec Environmental Restoration

2010-05-17T23:59:59.000Z

496

Efficient speaker verification using Gaussian mixture model component clustering.  

SciTech Connect (OSTI)

In speaker verification (SV) systems that employ a support vector machine (SVM) classifier to make decisions on a supervector derived from Gaussian mixture model (GMM) component mean vectors, a significant portion of the computational load is involved in the calculation of the a posteriori probability of the feature vectors of the speaker under test with respect to the individual component densities of the universal background model (UBM). Further, the calculation of the sufficient statistics for the weight, mean, and covariance parameters derived from these same feature vectors also contribute a substantial amount of processing load to the SV system. In this paper, we propose a method that utilizes clusters of GMM-UBM mixture component densities in order to reduce the computational load required. In the adaptation step we score the feature vectors against the clusters and calculate the a posteriori probabilities and update the statistics exclusively for mixture components belonging to appropriate clusters. Each cluster is a grouping of multivariate normal distributions and is modeled by a single multivariate distribution. As such, the set of multivariate normal distributions representing the different clusters also form a GMM. This GMM is referred to as a hash GMM which can be considered to a lower resolution representation of the GMM-UBM. The mapping that associates the components of the hash GMM with components of the original GMM-UBM is referred to as a shortlist. This research investigates various methods of clustering the components of the GMM-UBM and forming hash GMMs. Of five different methods that are presented one method, Gaussian mixture reduction as proposed by Runnall's, easily outperformed the other methods. This method of Gaussian reduction iteratively reduces the size of a GMM by successively merging pairs of component densities. Pairs are selected for merger by using a Kullback-Leibler based metric. Using Runnal's method of reduction, we were able to achieve a factor of 2.77 reduction in a posteriori probability calculations with no loss in accuracy when the original UBM consisted of 256 component densities. When clustering was implemented with a 1024 component UBM, we achieved a computation reduction of 5 with no loss in accuracy and a reduction by a factor of 10 with less than 2.4% relative loss in accuracy.

De Leon, Phillip L. (New Mexico State University, Las Cruces, NM); McClanahan, Richard D.

2012-04-01T23:59:59.000Z

497

Monitoring of saline tracer movement with vertically distributed self-potential measurements at the HOBE agricultural test site, Voulund, Denmark  

E-Print Network [OSTI]

The self-potential (SP) method is sensitive to water fluxes in saturated and partially saturated porous media, such as those associated with rainwater infiltration and groundwater recharge. We present a field-based study at the Voulund agricultural test site, Denmark, that is, to the best of our knowledge, the first to focus on the vertical self-potential distribution prior to and during a saline tracer test. A coupled hydrogeophysical modeling framework is used to simulate the SP response to precipitation and saline tracer infiltration. A layered hydrological model is first obtained by inverting dielectric and matric potential data. The resulting model that compares favorably with electrical resistance tomography models is subsequently used to predict the SP response. The electrokinetic contribution (caused by water fluxes in a charged porous soil) is modeled by an effective excess charge approach that considers both water saturation and pore water salinity. Our results suggest that the effective excess char...

Jougnot, Damien; Haarder, Eline B; Looms, Majken C

2015-01-01T23:59:59.000Z

498

Transport of tracers and pollutants from the Geysers Geothermal Resource Area  

SciTech Connect (OSTI)

An initial analysis of both surface and aerial SF/sub 6/ tracer data from the Geysers illustrates the importance that terrain, vertical wind shear, time-varying winds and stability have on the downwind distribution of cooling tower effluents during the daytime. Atmospheric stability and near surface winds above 3 m/s results in fumigation and surface impaction of a portion of cooling tower plumes on downwind surfaces and terrain. Vertical wind shear and possible gravity waves in upper-levels (approx. 1800 to 2000 m m.s.l), in addition, to terrain influences assist in distributing plumes horizontally and in the vertical at relative short (approx. 10 to 20 km) distances from the source. Small quantities of gaseous sulfur, primarily H/sub 2/S, are transported up to 20 km or more from the Geysers area. A variety of trace materials such as sulfate, copper, zinc, arsenic, bromine, lead, antimony, selenium and barium appear to be enriched over background levels and transported downwind from the Geysers Area at times.

Orgill, M.M.; Lee, R.N.; Schreck, R.I.

1983-08-01T23:59:59.000Z

499

A New Multi-wavelength Solar Telescope: Optical and Near-infrared Solar Eruption Tracer (ONSET)  

E-Print Network [OSTI]

A new multi-wavelength solar telescope, Optical and Near-infrared Solar Eruption Tracer (ONSET) of Nanjing University, was constructed, being fabricated by Nanjing Institute of Astronomical Optics & Technology and run in cooperation with Yunnan Astronomical Observatory. ONSET is able to observe the Sun in three wavelength windows: He {\\small I} 10830 \\AA, H$\\alpha$, and white-light at 3600 \\AA and 4250 \\AA, which are selected in order to obtain the dynamics in the corona, chromosphere, and the photosphere simultaneously. Full-disk or partial-disk solar images with a field of 10 arcmin at three wavelengths can be obtained nearly simultaneously. It is designed to trace solar eruptions with high spatial and temporal resolutions. This telescope was installed at a new solar observing site near Fuxian Lake in Yunnan Province, southwest China. The site is located at E102N24, with an altitude of 1722 m. The seeing is stable and of high quality. We give a brief description of the scientific objectives and the basi...

Fang, C; Li, Z; Ding, M D; Dai, Y; Zhang, X Y; Mao, W J; Zhang, J P; Li, T; Liang, Y J; Lu, H T

2013-01-01T23:59:59.000Z

500

Reading Tea Leaves: How Humans Interpret Topic Models  

E-Print Network [OSTI]

Reading Tea Leaves: How Humans Interpret Topic Models Jonathan Chang Jordan Boyd-Graber Sean, Blei Reading Tea Leaves #12;Topic Models in a Nutshell From an input corpus words to topics Forget Red Light, Green Light: A 2-Tone L.E.D. to Simplify Screens Corpus Chang, Boyd-Graber, Wang, Gerrish

Boyd-Graber, Jordan