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1

Acoustic Logs | Open Energy Information  

Open Energy Info (EERE)

Acoustic Logs Acoustic Logs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Acoustic Logs Details Activities (7) Areas (6) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: determine porosity of layers Stratigraphic/Structural: map discontinuities to determine their orientation. Hydrological: Thermal: Cost Information Low-End Estimate (USD): 1.00100 centUSD 1.0e-3 kUSD 1.0e-6 MUSD 1.0e-9 TUSD / foot Median Estimate (USD): 4.62462 centUSD 0.00462 kUSD 4.62e-6 MUSD 4.62e-9 TUSD / foot High-End Estimate (USD): 16.001,600 centUSD 0.016 kUSD 1.6e-5 MUSD 1.6e-8 TUSD / foot

2

Acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth3 s magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation . The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores.

Vail, III, William B. (Bothell, WA)

1988-01-01T23:59:59.000Z

3

Cross-Dipole Acoustic Log | Open Energy Information  

Open Energy Info (EERE)

Cross-Dipole Acoustic Log Cross-Dipole Acoustic Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Cross-Dipole Acoustic Log Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Acoustic Logs Information Provided by Technique Lithology: Stratigraphic/Structural: Rock stress and fracture analysis Hydrological: Use for fracture identification in open and cased holes. Also used for evaluating hydro fracturing/well stimulation effectiveness. Thermal: Dictionary.png Cross-Dipole Acoustic Log: An acoustic logging technique where the acoustic transmitter and receivers are lowered down hole and waveforms that travel through the well mud,

4

Category:Well Log Techniques | Open Energy Information  

Open Energy Info (EERE)

Category Category Edit History Facebook icon Twitter icon » Category:Well Log Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Well Log Techniques page? For detailed information on Well Log Techniques as exploration techniques, click here. Category:Well Log Techniques Add.png Add a new Well Log Techniques Technique Pages in category "Well Log Techniques" The following 17 pages are in this category, out of 17 total. A Acoustic Logs C Caliper Log Cement Bond Log Chemical Logging Cross-Dipole Acoustic Log D Density Log F FMI Log G Gamma Log I Image Logs M Mud Logging N Neutron Log P Pressure Temperature Log R Resistivity Log Resistivity Tomography S Single-Well and Cross-Well Resistivity Spontaneous Potential Well Log Stoneley Analysis

5

Acoustic Logs At Coso Geothermal Area (2005) | Open Energy Information  

Open Energy Info (EERE)

Coso Geothermal Area (2005) Coso Geothermal Area (2005) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Acoustic Logs Activity Date 2005 Usefulness not indicated DOE-funding Unknown Exploration Basis Well bore fracture analysis Notes Electrical and acoustic image logs have been collected from well 58A-10 in crystalline rock on the eastern margin. Electrical image logs appear to be sensitive to variations in mineralogy, porosity, and fluid content that highlight both natural fractures and rock fabrics. These fabric elements account for about 50% of the total population of planar structures seen in the electrical image log, but locally approach 100%. Acoustic image logs reveal a similar natural fracture population, but generally image slightly fewer fractures, and do not reveal rock fabric. Both logs also record

6

Acoustic Logs At Coso Geothermal Area (1977) | Open Energy Information  

Open Energy Info (EERE)

Coso Geothermal Area (1977) Coso Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Acoustic Logs At Coso Geothermal Area (1977) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Acoustic Logs Activity Date 1977 Usefulness not indicated DOE-funding Unknown Notes Acoustic logs indicate fractured rock and potentially permeable zones. References Galbraith, R. M. (1 May 1978) Geological and geophysical analysis of Coso Geothermal Exploration Hole No. 1 (CGEH-1), Coso Hot Springs KGRA, California Goranson, C.; Schroeder, R. (1 June 1978) Static downhole characteristics of well CGEH-1 at Coso Hot Springs, China Lake, California Retrieved from "http://en.openei.org/w/index.php?title=Acoustic_Logs_At_Coso_Geothermal_Area_(1977)&oldid=510216"

7

Dual excitation acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be performed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described. 6 figs.

Vail, W.B. III.

1989-02-14T23:59:59.000Z

8

Dual excitation acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in gelogical formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleous present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described.

Vail, III, William B. (Bothell, WA)

1989-01-01T23:59:59.000Z

9

Acoustic Logs At Raft River Geothermal Area (1979) | Open Energy  

Open Energy Info (EERE)

Raft River Geothermal Area (1979) Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Acoustic Logs Activity Date 1979 Usefulness useful DOE-funding Unknown Exploration Basis To permit the lateral and vertical extrapolation of core and test data and bridged the gap between surface geophysical data and core analyses. Notes Televiewer logs permitted the location and orientation of numerous fractures and several features that may be faults. References Keys, W. S.; Sullivan, J. K. (1 June 1979) Role of borehole geophysics in defining the physical characteristics of the Raft River geothermal reservoir, Idaho Retrieved from "http://en.openei.org/w/index.php?title=Acoustic_Logs_At_Raft_River_Geothermal_Area_(1979)&oldid=473816"

10

Well Log Techniques | Open Energy Information  

Open Energy Info (EERE)

Well Log Techniques Well Log Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Well Log Techniques Details Activities (4) Areas (4) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: depth and thickness of formations; lithology and porosity can be inferred Stratigraphic/Structural: reservoir thickness, reservoir geometry, borehole geometry Hydrological: permeability and fluid composition can be inferred Thermal: direct temperature measurements; thermal conductivity and heat capacity Dictionary.png Well Log Techniques: Well logging is the measurement of formation properties versus depth in a

11

Acoustic Waveform Logging - Advances In Theory And Application  

E-Print Network (OSTI)

Full-waveform acoustic logging has made significant advances in both theory and application in recent years, and these advances have greatly increased the capability of log analysts to measure the physical properties of ...

Cheng, C. H.

12

COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO...  

Open Energy Info (EERE)

to permeability in the reservoir. Acoustic image logs reveal a similar natural fracture population, but generally image slightly fewer fractures, and do not reveal rock...

13

Acoustic Logs At Alum Area (Moos & Ronne, 2010) | Open Energy Information  

Open Energy Info (EERE)

Acoustic Logs At Alum Geothermal Area (Moos & Ronne, Acoustic Logs At Alum Geothermal Area (Moos & Ronne, 2010) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Acoustic Logs Activity Date Usefulness useful DOE-funding Unknown Notes The results revealed that acoustic images are superior to electrical images to detect structurally important natural fractures and stress-induced wellbore breakouts and tensile wall fractures, and were adequate to detect stratigraphic features. References Daniel Moos, Joel Ronne (2010) Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Retrieved from "http://en.openei.org/w/index.php?title=Acoustic_Logs_At_Alum_Area_(Moos_%26_Ronne,_2010)&oldid=510215" Categories: Exploration Activities

14

Cross-Dipole Acoustic Log At Alum Area (Moos & Ronne, 2010) | Open Energy  

Open Energy Info (EERE)

Dipole Acoustic Log At Alum Area (Moos & Ronne, 2010) Dipole Acoustic Log At Alum Area (Moos & Ronne, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Cross-Dipole Acoustic Log At Alum Geothermal Area (Moos & Ronne, 2010) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Cross-Dipole Acoustic Log Activity Date Usefulness useful DOE-funding Unknown Notes A crossed-dipole acoustic log detected stress induced anisotropy in the sediments, and also appeared to be able to identify and orient steeply dipping, compliant and therefore possibly conductive fractures in basement rocks. Because the shear-wave velocity was extremely low throughout most of the sedimentary section dipole data was required for its determination. The analysis results, which included a stress determination based on an

15

Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) Exploration Activity Details Location Newberry Caldera Area Exploration Technique Acoustic Logs Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes The acoustic borehole televiewer (BHTV) was run twice in the wellbore with limited success. There were several problems with the tool's fimctions, but images were successfully obtained over the interval from 2748' to 3635'. References Jim Combs, John T. Finger, Colin Goranson, Charles E. Hockox Jr., Ronald D. Jacobsen, Gene Polik (1999) Slimhole Handbook- Procedures And Recommendations For Slimhole Drilling And Testing In Geothermal Exploration

16

Well Log Techniques At Raft River Geothermal Area (1977) | Open Energy  

Open Energy Info (EERE)

Well Log Techniques At Raft River Geothermal Area Well Log Techniques At Raft River Geothermal Area (1977) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Well Log Techniques Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Characterize the rock using well log data. Notes Information is given on the following logs: dual-induction focused log, including resistivity, sp, and conductivity; acoustic log; compensated neutron; compensated densilog; and caliper. Lithologic breaks for a drill core to a depth of 2840 ft are illustrated. References Covington, H.R. (1 January 1978) Deep drilling data, Raft River geothermal area, Idaho Raft River geothermal exploration well No. 4 Retrieved from "http://en.openei.org/w/index.php?title=Well_Log_Techniques_At_Raft_River_Geothermal_Area_(1977)&oldid=6004

17

Processing dipole acoustic logging data to image fracture network in shale gas reservoirs  

Science Journals Connector (OSTI)

A recent advance in borehole remote acoustic reflection imaging is the utilization of a dipole acoustic system in a borehole to emit and receive elastic waves to and from a remote geologic reflector in formation. An important application of this new technique is the delineation of fracture network in shale gas reservoirs as interest and activities in shale gas exploration increase in China. We develop a data processing procedure and implement it to handle routine processing of dipole acoustic logging data. The procedure takes into account the characteristics of the dipole data such as frequency dispersion attenuation recording length and dipole source orientation etc. to obtain an image of reflectors within 20~30 meters around the borehole. We have applied the technique to process dipole acoustic data from several wells drilled into gas reservoirs in China. The obtained images clearly identify major fracture network in the gas producing intervals of the reservoir demonstrating the effectiveness of the imaging technique.

Zhuang Chunxi; Su Yuanda; Tang Xiaoming

2012-01-01T23:59:59.000Z

18

Acoustic Logs At Steamboat Springs Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Steamboat Springs Area (Combs, Et Al., 1999) Steamboat Springs Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Acoustic Logs At Steamboat Springs Area (Combs, Et Al., 1999) Exploration Activity Details Location Steamboat Springs Area Exploration Technique Acoustic Logs Activity Date Usefulness useful DOE-funding Unknown Notes Two other Sandia instruments were used briefly: the acoustic borehole televiewer (BHTV) yielded wellbore images down to 520';and a Sandia memory tool gave pressuretemperature data for a shut-in test at the end of the project. Because no oriented core has been collected in this field, the televiewer images giving fracture direction were extremely M.ormative, but the BHTV could not be used at greater depths because of its temperature

19

Synthesis of Multipole Acoustic Logging Measurements Using the Generalized Reflection/Transmission Matrices Method  

E-Print Network (OSTI)

Synthesis of Multipole Acoustic Logging Measurements Using the Generalized Reflection analytical method that has been used in multipole waveform synthesis for radially multilayered formations

Torres-Verdín, Carlos

20

Numerical simulation of borehole acoustic logging in the frequency and time domains with hp-adaptive finite elements  

E-Print Network (OSTI)

Numerical simulation of borehole acoustic logging in the frequency and time domains with hp elasticity Coupled problems hp-adaptive finite elements a b s t r a c t Accurate numerical simulation physical modeling combined with accurate and efficient numerical dis- cretization and solution techniques

Torres-Verdín, Carlos

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Chemical logging- a geothermal technique | Open Energy Information  

Open Energy Info (EERE)

logging- a geothermal technique logging- a geothermal technique Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Chemical logging- a geothermal technique Details Activities (1) Areas (1) Regions (0) Abstract: Chemical logging studies conducted at the Department of Energy's Raft River Geothermal Test Site in south central Idaho resulted in the development of a technique to assist in geothermal well drilling and resource development. Calcium-alkalinity ratios plotted versus drill depth assisted in defining warm and hot water aquifers. Correlations between the calcium-alkalinity log and lithologic logs were used to determine aquifer types and detection of hot water zones 15 to 120 m before drill penetration. INEL-1 at the Idaho National Engineering Laboratory site in

22

Approximate Effects of Off-Center Acoustic Sondes and Elliptic Boreholes Upon Full Waveform Logs  

E-Print Network (OSTI)

Full waveform acoustic well logging has become instrumental to hydrocarbon exploration because of its ability to determine in situ velocity information for P and S waves as well as the attenuation (or absorption) of seismic ...

Willis, M. E.

1983-01-01T23:59:59.000Z

23

COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO GEOTHERMAL  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO GEOTHERMAL FIELD, CA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO GEOTHERMAL FIELD, CA Details Activities (1) Areas (1) Regions (0) Abstract: Electrical and acoustic image logs collected from well 58A-10 in crystalline rock on the eastern margin of the Coso Geothermal Field, CA, reveal different populations of planar structures intersecting the borehole. Electrical image logs appear to be sensitive to variations in

24

Well Log Techniques At Coso Geothermal Area (1985) | Open Energy  

Open Energy Info (EERE)

Coso Geothermal Area (1985) Coso Geothermal Area (1985) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Well Log Techniques Activity Date 1985 Usefulness not indicated DOE-funding Unknown Exploration Basis Impact of long term testing on the well pressure Notes The downhole pressure monitoring equipment for each well included a stainless steel pressure chamber attached to a 0.25 inch stainless steel capillary tubing. The surface end of the capillary tubing was connected to a Paroscientific quartz pressure trandsducer. References Sanyal, S.; Menzies, A.; Granados, E.; Sugine, S.; Gentner, R. (20 January 1987) Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA Retrieved from "http://en.openei.org/w/index.php?title=Well_Log_Techniques_At_Coso_Geothermal_Area_(1985)&oldid=600462

25

Stability of finite difference numerical simulations of acoustic logging-while-drilling with different perfectly matched layer schemes  

Science Journals Connector (OSTI)

In acoustic logging-while-drilling (ALWD) finite difference in time domain (FDTD) simulations, large drill collar occupies, most of the fluid-filled borehole and divides the borehole fluid into two thin fluid col...

Hua Wang; Guo Tao; Xue-Feng Shang; Xin-Ding Fang; Daniel R. Burns

2013-12-01T23:59:59.000Z

26

Nuclear Magnetic Resonance (NMR) is the only logging technique available to estimate pore-size  

E-Print Network (OSTI)

1 ABSTRACT Nuclear Magnetic Resonance (NMR) is the only logging technique available to estimate, Nuclear Magnetic Resonance (NMR) logging has been used to assess a handful of key petrophysical parameters

Torres-Verdín, Carlos

27

A case study of multipole acoustic logging in heavy oil sand reservoirs  

Science Journals Connector (OSTI)

The multipole acoustic logging tool (MPAL) was tested in the heavy oil sand reservoirs of Canada. Compared with near shales the P-wave slowness of heavy oil sands does not change obviously with the value of about 125?s/ft; the dipole shear slowness decreases significantly to 275?s/ft. The heavy oil sands have a Vp/Vs value of less than 2.4. The slowness and amplitude of dipole shear wave are good lithology discriminators that have great differences between heavy oil sands and shales. The heavy oil sand reservoirs are anisotropic. The crossover phenomenon in the fast and slow dipole shear wave dispersion curves indicates that the anisotropy is induced by unbalanced horizontal stress in the region.

Xiaohua Che

2014-01-01T23:59:59.000Z

28

Well Log Techniques At Snake River Plain Region (DOE GTP) | Open Energy  

Open Energy Info (EERE)

Well Log Techniques At Snake River Plain Region (DOE GTP) Well Log Techniques At Snake River Plain Region (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Well Log Techniques At Snake River Plain Region (DOE GTP) Exploration Activity Details Location Snake River Plain Geothermal Region Exploration Technique Well Log Techniques Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Well_Log_Techniques_At_Snake_River_Plain_Region_(DOE_GTP)&oldid=600470" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

29

Estimation of Dry-Rock Elastic Moduli Based on the Simulation of Mud-Filtrate Invasion Effects on Borehole Acoustic Logs  

E-Print Network (OSTI)

Effects on Borehole Acoustic Logs Tobiloluwa Odumosu, SPE, Carlos Torres-Verdín, SPE, Jesús M Salazar, SPE. Jun Ma, Ben Voss, and Gong Li Wang, SPE, The University of Texas at Austin Copyright 2007, Society

Torres-Verdín, Carlos

30

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

Science Journals Connector (OSTI)

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

Antony Joseph

2014-01-01T23:59:59.000Z

31

An acoustic technique for measurement of bubble solids mass loading (a) Fundamental study of single bubble  

E-Print Network (OSTI)

An acoustic technique for measurement of bubble solids mass loading ­ (a) Fundamental study of single bubble Wen Zhang , Steven J. Spencer, Peter Coghill Lucas Heights Research Laboratory, CSIRO i n f o Article history: Available online 6 March 2012 Keywords: Flotation bubbles On-line analysis

Zhang, Wen

32

Quantification of Wellbore Leakage Risk Using Non?destructive Borehole Logging Techniques  

SciTech Connect

Well integrity is important at all potential CCS locations and may play a crucial role establishing leakage risk in areas where there is a high density of existing wells that could be impacted by the storage operations including depleted petroleum fields where EOR or CCS will occur. To address a need for risk quantification methods that can be directly applied to individual wells using borehole logging tools a study was conducted using data from five wells in Wyoming. The objectives of the study were: Objective 1 Develop methods to establish the baseline flow parameters (porosity and permeability or mobility) from individual measurements of the material properties and defects in a well. Objective 2 Develop a correlation between field flow?property data and cement logs that can be used to establish the flow?properties of well materials and well features using cement mapping tools. Objective 3 Establish a method that uses the flow?property model (Objective 2) to analyze the statistical uncertainties associated with individual well leakage that can provide basis for uncertainty in risk calculations. The project objectives were met through the logging of five wells in Carbon and Natrona County Wyoming to collect data that was used to estimate individual and average well flow properties and model the results using ultrasonic data collected during the logging. Three of the five wells provided data on point and average flow properties for well annuli. Data from the other two wells were used to create models of cement permeability and test whether information collected in one well could be used to characterize another well. The results of the in?situ point measurements were confirmed by the lab measurements sidewall cores collected near the same depths Objective 1 was met using the data collected through logging, testing, and sampling. The methods were developed that can establish baseline flow parameters of wells by both point and average test methods. The methods to estimate the flow properties modeling of point pressure tests, modeling of vertical interference tests, and laboratory measurement of cased?hole sidewall cores The wells were in sufficiently good shape to allow the development of the characterization methods while still having enough defects to study differences in results as they relate to well integrity. Samples and tests analyzed from three of five wells studied in showed the cements were largely intact and had not degraded from exposure native brines. Log results taken in conjunction with the core measurements indicate that interfaces and/or problems with cement placement due to eccentering provide preferential flow paths for fluids, which can increase the effective permeability of the barrier several orders of magnitude above the permeability of intact cement. The results of the maps created using logging tools indicating that the cement condition and bond are generally good identify a need for more research to understand how logs can be used to predict effective well permeabilities such as those measured by the VITs in this study.

Duguid, Andrew; Butsch, Robert; Cary, J.; Celia, Michael; Chugunov, Nikita; Gasda, Sarah; Hovorka, Susan; Ramakrishnan, T. S.; Stamp, Vicki; Thingelstad, Rebecca; Wang, James

2014-05-31T23:59:59.000Z

33

Category:Neutron Log | Open Energy Information  

Open Energy Info (EERE)

Neutron Log page? For detailed information on Neutron Log, click here. Category:Neutron Log Add.png Add a new Neutron Log Technique Pages in category "Neutron Log" This category...

34

Acoustic Character Of Hydraulic Fractures In Granite  

E-Print Network (OSTI)

Hydraulic fractures in homogeneous granitic rocks were logged with conventional acoustic-transit-time, acoustic-waveform, and acoustic-televiewer logging systems. Fractured intervals ranged in depth from 45 to 570m. and ...

Paillet, Frederick I.

1983-01-01T23:59:59.000Z

35

Chemical Logging | Open Energy Information  

Open Energy Info (EERE)

Chemical Logging Chemical Logging Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Chemical Logging Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Presence and geochemical composition of fluid producing zones Thermal: Calcium-alkalinity ratios versus depth assist in defining warm and hot water aquifers Dictionary.png Chemical Logging: Chemical logging produces a chemical profile of the formation fluid within a well based on the measurement of changes in the chemical composition of the drilling fluid during drilling operations.

36

Cement Bond Log | Open Energy Information  

Open Energy Info (EERE)

Cement Bond Log Cement Bond Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Cement Bond Log Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Acoustic Logs Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 0.8585 centUSD 8.5e-4 kUSD 8.5e-7 MUSD 8.5e-10 TUSD / foot Median Estimate (USD): 1.25125 centUSD 0.00125 kUSD 1.25e-6 MUSD 1.25e-9 TUSD / foot High-End Estimate (USD): 3.00300 centUSD 0.003 kUSD 3.0e-6 MUSD 3.0e-9 TUSD / foot Time Required Low-End Estimate: 0.35 days9.582478e-4 years 8.4 hours 0.05 weeks 0.0115 months / job

37

Matched Asymptotic Expansion (MAE) technique applied to acoustic radiation from vibrating surfaces  

Science Journals Connector (OSTI)

The MAE technique has been used in the field of fluid mechanics for many years. Only recently has this technique been applied to acoustic problems where it has been found to be an excellent and powerful tool in analyzing either scattering and diffraction or radiation from moving rigid objects (propellers). In this paper it is shown how the MAE technique can be utilized to solve acoustic radiation problems from flexible surfaces. The technique is then applied to the following force driven systems: (1) circular piston in infinite rigid baffle (2) two concentric pistons in infinite modes. For each of problem analyzed the structural wavelength a is assumed to be small compared to the fluid wavelength (i.e. ka ? 1). The inner region close to the vibrating structure (acoustic boundary layer) is governed by the Laplace's equation while the outer solution is governed by the Helmholtz equation. The inner and outer solution is governed by the Helmholtz equation. The inner and outer solutions are solved independently and are then joined together by the MAE matching procedure. A composite solution is then obtained from a combination of the inner and the outer solution. Agreements with the exact theory for the radiated pressure surface resistance and reactance are shown to be excellent.

Mauro Pierucci

1977-01-01T23:59:59.000Z

38

Analysis and evaluation of interwell seismic logging techniques for reservoir characterization. [Quarterly report], April 1--June 30, 1993  

SciTech Connect

The objective of this three-year research program is to investigate interwell seismic logging techniques for indirectly interpreting oil and gas reservoir geology and rock physical properties. This work involves a balanced study of advanced theoretical and numerical modeling of seismic waves transmitted between pairs of reservoir wells combined with experimental dam acquisition and processing of measurements at controlled sites as well as in full-scale reservoirs. This reservoir probing concept is aimed at demonstrating high-resolution measurements and detailed interpretation of heterogeneous hydrocarbon-bearing formations. In this quarterly report technical progress is summarized for Task 3, data processing and analysis of: preliminary interpretation of interwell seismic data from wells 5-7 and 7-7 at the Gypsy Test Site; and the response of a thin layer in an anistropic shale.

Parra, J.O.

1993-12-31T23:59:59.000Z

39

Neutron Log | Open Energy Information  

Open Energy Info (EERE)

Neutron Log Neutron Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Neutron Log Details Activities (4) Areas (4) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: if used in conjunction with other logs, this technique can provide information on the rock type and the porosity Stratigraphic/Structural: Corelation of rock units Hydrological: Estimate of formation porosity Thermal: Dictionary.png Neutron Log: The neutron log responds primarily to the amount of hydrogen in the formation which is contained in oil, natural gas, and water. The amount of hydrogen can be used to identify zones of higher porosity.

40

Image Logs | Open Energy Information  

Open Energy Info (EERE)

Image Logs Image Logs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Image Logs Details Activities (2) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Identify different lithological layers, rock composition, grain size, mineral, and clay content Stratigraphic/Structural: -Fault and fracture identification -Rock texture, porosity, and stress analysis -determine dip, thickness, and geometry of rock strata in vicinity of borehole -Detection of permeable pathways, fracture zones, faults Hydrological: Locate zones of aquifer inflow/outflow Thermal:

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Optimal Suturing Technique and Number of Sutures for Surgical Implantation of Acoustic Transmitters in Juvenile Salmonids  

SciTech Connect

The size reduction of acoustic transmitters has led to a reduction in the length of incision needed to implant a transmitter. Smaller suture knot profiles and fewer sutures may be adequate for closing an incision used to surgically implant an acoustic microtransmitter. As a result, faster surgery times and reduced tissue trauma could lead to increased survival and decreased infection for implanted fish. The objective of this study was to assess the effects of five suturing techniques on mortality, tag and suture retention, incision openness, ulceration, and redness in juvenile Chinook salmon Oncorhynchus tshawytscha implanted with acoustic microtransmitters. Suturing was performed by three surgeons, and study fish were held at two water temperatures (12C and 17C). Mortality was low and tag retention was high for all treatments on all examination days (7, 14, 21, and 28 days post-surgery). Because there was surgeon variation in suture retention among treatments, further analyses included only the one surgeon who received feedback training in all suturing techniques. Incision openness and tissue redness did not differ among treatments. The only difference observed among treatments was in tissue ulceration. Incisions closed with a horizontal mattress pattern had more ulceration than other treatments among fish held for 28 days at 17C. Results from this study suggest that one simple interrupted 1 1 1 1 suture is adequate for closing incisions on fish under most circumstances. However, in dynamic environments, two simple interrupted 1 1 1 1 sutures should provide adequate incision closure. Reducing bias in survival and behavior tagging studies is important when making comparisons to the migrating salmon population. Therefore, by minimizing the effects of tagging on juvenile salmon (reduced tissue trauma and reduced surgery time), researchers can more accurately estimate survival and behavior.

Deters, Katherine A.; Brown, Richard S.; Boyd, James W.; Eppard, M. B.; Seaburg, Adam

2012-01-02T23:59:59.000Z

42

A stability verification technique using acoustic emission for an HTS monofilar component  

Science Journals Connector (OSTI)

This paper reports an acoustic emission (AE) technique that was developed for detecting the quenching and stability characteristics of high-temperature superconductors (HTSs), particularly a BSCCO-2212 monofilar component for a resistive superconducting fault current limiter (SFCL) system. The 24kV class SFCL, which was recently developed by the KEPRI-LSIS collaboration group in Korea, requires almost 150 BSCCO-2212 monofilar components. A BSCCO-2212 monofilar HTS undergoes thermal and mechanical stress creating microcracks during and after quenching or reaching a fault state such as during a short-circuit test. The AE technique is a useful tool for detecting the presence of transient heating and the existence of hot spots within the superconducting fault current component.

H M Kim; K B Park; B W Lee; I S Oh; J W Sim; O B Hyun; Y Iwasa; H G Lee

2007-01-01T23:59:59.000Z

43

Novel sample preparation technique for protein crystal X-ray crystallographic analysis combining microfluidics and acoustic manipulation  

Science Journals Connector (OSTI)

A technique for sample preparation prior to X-ray crystallographic analysis of protein crystals involving the use of acoustic radiation forces and a micro-machined fluidic device is introduced. Crystals can be positioned in a sequence along a channel and then individually removed with a loop, which is then mounted onto a goniometer.

Oberti, S.

2009-06-13T23:59:59.000Z

44

Stellar acoustic radii, mean densities and ages from seismic inversion techniques  

E-Print Network (OSTI)

Context. Determining stellar characteristics such as the radius, the mass or the age is crucial when studying stellar evolution, exoplanetary systems or characterising stellar populations in the Galaxy. Asteroseismology is the golden path to accurately obtain these characteristics. In this context, a key question is how to make these methods less model-dependant. Aims. Building on the work of Reese et al. (2012), we wish to extend the SOLA inversion technique to new stellar global characteristics in addition to the mean density. The goal is to provide a general framework in which to estimate these characteristics as accurately as possible in low mass main sequence stars. Methods. First, we describe our framework and discuss the reliability of the inversion technique and the possible sources of error.We then apply this methodology to the acoustic radius, an age indicator based on the sound speed derivative and the mean density and compare it to estimates based on the average large and small frequency separatio...

Buldgen, Gal; Dupret, Marc-Antoine; Samadi, Rza

2014-01-01T23:59:59.000Z

45

Gamma Log | Open Energy Information  

Open Energy Info (EERE)

Gamma Log Gamma Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gamma Log Details Activities (6) Areas (6) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: provides information on changes in rock type near the wellbore from changes in measured gamma radiation Stratigraphic/Structural: using multiple gamma logs over an area, the depth to the sandstone and shale layers can be correlated over larger areas Hydrological: Thermal: Cost Information Low-End Estimate (USD): 0.2525 centUSD 2.5e-4 kUSD 2.5e-7 MUSD 2.5e-10 TUSD / foot Median Estimate (USD): 0.3838 centUSD

46

Density Log | Open Energy Information  

Open Energy Info (EERE)

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

47

Spontaneous Potential Well Log | Open Energy Information  

Open Energy Info (EERE)

Spontaneous Potential Well Log Spontaneous Potential Well Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Spontaneous Potential Well Log Details Activities (2) Areas (2) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: SP technique originally applied to locating sulfide ore-bodies. Stratigraphic/Structural: -Formation bed thickness and boundaries -Detection and tracing of faults -Permeability and porosity Hydrological: Determination of fluid flow patterns: electrochemical coupling processes due to variations in ionic concentrations, and electrokinetic coupling processes due to fluid flow in the subsurface.

48

Mud Logging | Open Energy Information  

Open Energy Info (EERE)

Mud Logging Mud Logging Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Mud Logging Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Lithological layers are identified from drill cuttings Stratigraphic/Structural: Porosity of rocks Hydrological: Fluid content of the borehole while drilling can be determined Thermal: Cost Information Low-End Estimate (USD): 1,300.00130,000 centUSD 1.3 kUSD 0.0013 MUSD 1.3e-6 TUSD / day Median Estimate (USD): 1,450.00145,000 centUSD 1.45 kUSD 0.00145 MUSD 1.45e-6 TUSD / day High-End Estimate (USD): 2,000.00200,000 centUSD

49

Change Log  

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

Change Log Change Log Change Log NERSC-8 / Trinity Benchmarks Change Log 09/03/2013 Correction applied to MiniDFT web-page (to remove inconsistency with MiniDFT README). Capability Improvement measurements do not require 10,000 MPI ranks per k-point. 08/06/2013 Various pages have changed to remove "draft" status 08/02/2013 Correction added to FLOP Counts for "Small" Single-Node Miniapplication Tests page 07/12/2013 README files updated for IOR benchmark to correct an error in wording (no code changes); README file updated for osu-micro-benchmarks (OMB) changing the tests required and conditions including reinserting some tests that had been deleted earlier 07/05/2013 README updated for mpimemu benchmark; Revised version of benchmark results spreadsheet (linked on SSP web page);

50

Rotting Logs  

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

55 March 2, 1946 55 March 2, 1946 Forest Preserve District of Cook County Clayton F. Smith, President Roberts Mann, Superintendent of Conservation ROTTING LOGS There is drama in a rotting log. Apparently lifeless and useless there on the ground, it harbors thousands of living things within and beneath it. Feeding on the wood of the log, living and dying, generation after generation of them, they convert it back into minerals which a fertile healthy forest soil must have. They also add the humus which not only helps the soil to hold its moisture but also aids in making the soil minerals usable as food by plants, including trees. Finally there is nothing left but crumbling punk shot through and through with the hyphae, or roots, of molds and mushrooms. Some of the common lower plant and animal forms found in a rotting log in our forest preserves are these.

51

Acoustic emission non-destructive testing of structures using source location techniques.  

SciTech Connect

The technology of acoustic emission (AE) testing has been advanced and used at Sandia for the past 40 years. AE has been used on structures including pressure vessels, fire bottles, wind turbines, gas wells, nuclear weapons, and solar collectors. This monograph begins with background topics in acoustics and instrumentation and then focuses on current acoustic emission technology. It covers the overall design and system setups for a test, with a wind turbine blade as the object. Test analysis is discussed with an emphasis on source location. Three test examples are presented, two on experimental wind turbine blades and one on aircraft fire extinguisher bottles. Finally, the code for a FORTRAN source location program is given as an example of a working analysis program. Throughout the document, the stress is on actual testing of real structures, not on laboratory experiments.

Beattie, Alan G.

2013-09-01T23:59:59.000Z

52

AVO and anisotropy from logs and walkaways  

SciTech Connect

AVO (amplitude versus offset) is the seismic technique used for mapping lithology, and modeling is an important step for successful AVO interpretations. Shear velocity measurements are essential, since AVO attempts to exploit the elastic (as opposed to acoustic) nature of seismic wave propagation. A property of seismic wave propagation not often considered is anisotropy. This is probably because the magnitude of the anisotropy has been difficult to measure, and its effect on AVO is not widely known. New technology is helping to improve AVO modeling. Dipole source shear logging tools can now measure very slow shear velocities, increasing the range of applicability of AVO, and new borehole seismic techniques can measure anisotropy. When integrated, these new measurements provide more detailed information about the elastic moduli that govern wave propagation, and bring the possibility for greater reliability in AVO interpretation. Two examples of ray-trace AVO synthetics are shown to illustrate typical AVO responses and the importance of shear velocity information. An overview of anisotropy is given and a new technique to estimate anisotropy from walkaway surveys (multi-offset VSPs) is described. The log and walkaway measurements are then integrated to study the impact of anisotropy on AVO. First, the effect of anisotropy on Ostrander's shale-sand model is investigated, and second, isotropic and anisotropic ray-trace synthetics are compared. The effect of anisotropy on AVO is found to be significant and may be lead to misinterpretations of AVO anomalies.

Leaney, S.W.; Borland, W.E. (Schlumberger Geophysics Nusantara, Jakarta (Indonesia))

1994-07-01T23:59:59.000Z

53

Definition: Image Logs | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Image Logs Jump to: navigation, search Dictionary.png Image Logs Well logging techniques which create images of the inside of a borehole. A 360° view camera is used that can be lowered into a borehole via logging cable. The camera's purpose is to provide live images of the borehole walls. View on Wikipedia Wikipedia Definition Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs). Well logging can

54

FMI Log | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » FMI Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: FMI Log Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Image Logs Information Provided by Technique Lithology: Identify different lithological layers, rock composition, mineral, and clay content Stratigraphic/Structural: -Fault and fracture identification -Rock texture, porosity, and stress analysis -determine dip and structural features in vicinity of borehole -Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

55

Log Summarization  

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

Log Log Summarization and Anomaly Detection for Troubleshooting Distributed Systems Dan Gunter #1 , Brian L. Tierney #2 , Aaron Brown ∗3 , Martin Swany ∗4 , John Bresnahan !5 , Jennifer M. Schopf !6 # Lawrence Berkeley National Laboratory, Berkeley, CA, USA 1 dkgunter@lbl.gov 2 bltierney@lbl.gov ∗ University of Delaware, Newark, DE, USA 3 brown@cis.udel.edu 4 swany@cis.udel.edu ! Argonne National Laboratory, Argonne, IL, USA 5 bresnaha@mcs.anl.gov 6 jms@mcs.anl.gov Abstract- Today's system monitoring tools are capable of detecting system failures such as host failures, OS errors, and network partitions in near-real time. Unfortunately, the same cannot yet be said of the end-to-end distributed software stack. Any given action, for example, reliably transferring a directory of files, can involve a wide range of complex and interrelated actions across multiple pieces

56

Architectural acoustics  

Science Journals Connector (OSTI)

This tutorial will familiarize people with basic concepts in architectural acoustics. Many slides of actual buildings and a brief audio tape will be used to illustrate connections between the visual appearance of buildings and the qualities of their sonic environment. The presentation will provide examples and explanations of common acoustic experiences in buildings with the under?lying reasons for their occurrence. Architectural acoustics can be characterized as an evolving empirical exploration of basic principles from many areas of acoustics through creative testing in the design and subsequent evaluation of buildings. A historical review of applied acoustical principles translated into the medium of architecture will be presented in four primary areas: (1) subjective impressions including qualities of music speech intelligibility and annoyance which are the basis for current design criteria; (2) room acoustics design with an emphasis on auditoria schools restaurants and other public buildings; (3) providing privacy from unwanted sounds and vibrations through discussion of standard measurement techniques such as sound transmission class (STC); and (4) management of noise from HVAC systems and other equipment and processes in buildings. Interesting case studies will demonstrate how complex the practical application of even relatively simple acoustical principles can be in many buildings. In recent years a significant community of laboratory and applied researchers dedicated to this field has emerged to question and quantify the empirical knowledge base that has been accumulated over time. Recent topics of interest such as new measurement modeling and simulation techniques will be briefly introduced.

Gary W. Siebein

1994-01-01T23:59:59.000Z

57

Acoustic Based Sketch Recognition  

E-Print Network (OSTI)

investigate this new area, which we call acoustic based sketch recognition, and evaluate the possibilities of using it as a new interaction technique. We focus specifically on building a recognition engine for acoustic sketch recognition. We first propose a...

Li, Wenzhe

2012-10-19T23:59:59.000Z

58

Well Log Data At Valles Caldera - Redondo Geothermal Area (Shevenell...  

Open Energy Info (EERE)

Area Exploration Technique Well Log Data Activity Date - 1988 Usefulness useful DOE-funding Unknown Exploration Basis The study reports well log data from five wells...

59

Caliper Log | Open Energy Information  

Open Energy Info (EERE)

Caliper Log Caliper Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Caliper Log Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 0.4040 centUSD 4.0e-4 kUSD 4.0e-7 MUSD 4.0e-10 TUSD / foot Median Estimate (USD): 0.7878 centUSD 7.8e-4 kUSD 7.8e-7 MUSD 7.8e-10 TUSD / foot High-End Estimate (USD): 3.00300 centUSD 0.003 kUSD 3.0e-6 MUSD 3.0e-9 TUSD / foot Time Required Low-End Estimate: 0.35 days9.582478e-4 years 8.4 hours 0.05 weeks 0.0115 months / job

60

Rotting Logs  

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

441-A January 22, 1972 441-A January 22, 1972 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation ROTTING LOGS Trees are like people. They die from diseases, infections, injuries, burns, drowning, malnutrition, and sometimes just plain old age. Walking through the woods we see, here and there, dead or dying trees of various kinds. For example: a big white oak, with its bark ripped from crown to root, was literally cooked by a bolt of lightning during a summer thunderstorm. In a grove of black oaks, many are dying lingering deaths from infected wounds started years ago when an autumn fire swept through the fallen leaves and scorched the living wood. In a dense forest there are many that have lost the battle for space and sunlight. In some places we see trees that are slowly starving because dashing rains have carried away the fertile topsoil and the trampling feet of picnickers have injured the shallow roots that bring them food.

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Definition: Cement Bond Log | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Cement Bond Log Jump to: navigation, search Dictionary.png Cement Bond Log A representation of the integrity of the cement job, especially whether the cement is adhering solidly to the outside of the casing. The log is typically obtained from one of a variety of sonic-type tools. The newer versions, called cement evaluation logs, along with their processing software, can give detailed, 360-degree representations of the integrity of the cement job, whereas older versions may display a single line representing the integrated integrity around the casing.[1] Related Terms Acoustic Logs References ↑ Schlumberger Oilfield Glossary Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

62

Acoustic Emission Signal Processing Technique to Characterize Reactor In-Pile Phenomena  

SciTech Connect

Existing and developing advanced sensor technologies and instrumentation will allow non-intrusive in-pile measurement of temperature, extension, and fission gases when coupled with advanced signal processing algorithms. The transmitted measured sensor signals from inside to the outside of containment structure are corrupted by noise and are attenuated, thereby reducing the signal strength and signal-to-noise ratio. Identification and extraction of actual signal (representative of an in-pile phenomenon) is a challenging and complicated process. In this paper, empirical mode decomposition technique is proposed to reconstruct actual sensor signal by partially combining intrinsic mode functions. Reconstructed signal corresponds to phenomena and/or failure modes occurring inside the reactor. In addition, it allows accurate non-intrusive monitoring and trending of in-pile phenomena.

Vivek Agarwal; Magdy Samy Tawfik; James A Smith

2014-07-01T23:59:59.000Z

63

Pressure Temperature Log | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Pressure Temperature Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Pressure Temperature Log Details Activities (13) Areas (13) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Perturbations in temperature or pressure can be indicative of faults or other structural features Hydrological: fluid cirulation, over-pressured zones, and under-pressured zones. Thermal: Temperature profile with depth Cost Information Low-End Estimate (USD): 0.6060 centUSD 6.0e-4 kUSD

64

Geothermal Well Logging: Geological Wireline Logs and Fracture...  

Open Energy Info (EERE)

Logging: Geological Wireline Logs and Fracture Imaging Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal Well Logging: Geological...

65

Logs / Meeting Minutes Index  

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

Logs / Meeting Minutes Logs / Meeting Minutes This page supplies links to the various logs and meeting minutes that are pertinent to the UES Group. FC Shift Log An ORACLE database tool used by the Floor Coordinators to record events that occur on the Experiment Hall Floor. FC Shift Log (Pubic View) Members of the APS Computer Network can use this link to view the FC Shift Log. MCR Shift Log An ORACLE database tool used by the MCR Operators to record events that occur relating to the operation of the Accelerating Systems. MCR Operator Message History The MCR Operator message for the past 72 hours are recorded for reference. UES Meeting Minutes The weekly User ESH Support group meeting minutes are recorded for reference. Also included are AOD-EOS and AOD-EFO meeting minutes. APS Radiation Safety PnP Committee Minutes

66

Process Deviation Log  

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

Process Deviation Log 09_0730 Process Deviation Log 09_0730 EOTA - Business Form Document Title: P-010, Process Deviation Process Document Number: Process Deviation Log EOTA Employees Melissa Otero N/A Referenced Documents: Parent Document: F-014 Rev. 11_0316 Approvers: Melissa Otero Document Owner: Elizabeth Sousa Backup Owner: Notify of Changes: A 09_0730 11_0316 Revision History: Rev. Description of Change Intitial Release. Revised log to reflect date/date range that PD is in effect. Removed drop-down menu items. Added ECD, Extension Date and Closed Column. F-014 Process Deviation Log 09_0730 Process Deviation # Date Requestor Departme nt Process # Has PD Occurred ? (Y/N) CAR/PAR # Distributio n Date Estimated Closure Date Extension Date Closed Date Comment PD-001 PD-002 PD-003 PD-004 PD-005 PD-006 PD-007 PD-008 PD-009

67

Application of acoustic noise and self-potential localization techniques to a buried hydrothermal vent (Waimangu Old Geyser site, New Zealand)  

Science Journals Connector (OSTI)

......in volcanic and geothermal areas (Zablocki...nor high acoustic energy. Two major mechanisms...minimization of a cost function defined...a high acoustic energy compared to this...location and acoustic energy produced, seismic...Waikite and Reporoa geothermal areas, New Zealand......

J. Vandemeulebrouck; P. Roux; P. Goudard; A. Legaz; A. Revil; A.W. Hurst; A. Bolve; A. Jardani

2010-02-01T23:59:59.000Z

68

openhole_logging.indd  

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

OPENHOLE LOGGING WELL OPENHOLE LOGGING WELL Objective R MOTC has drilled a mostly vertical well that is specifi cally designat- ed for openhole logging tests. It was drilled to 5,400 feet and has approximately 2,350 feet of open hole to test a variety of openhole logging tools. The wellbore is drilled with an 8-1/2" drill bit. The well was originally drilled with a 3% KCL Polymer mud system that seems to work well for stabilizing sensitive shale zones. The lower formations are very compact and should be able to stay open without signifi - cant caving. RMOTC has the capability to recondition this wellbore with a variety of mud types if needed. The openhole section will pass through a variety of ages, formations, and lithologies common to the Rocky Mountain geologic province. The rocks encoun-

69

Logging in to Franklin  

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

Logging in Logging in Logging in to Franklin Interactive Access You can log in to Franklin using SSH (Secure Shell) with the following command from any UNIX, Linux, FreeBSD, etc. command shell or terminal: % ssh -l username franklin.nersc.gov There are a number of SSH-capable clients available for Windows, Mac, and UNIX/Linux machines. NERSC does not support or recommend any particular client. Franklin has 10 login nodes; you will be randomly connected to one of those 10 when you ssh to franklin.nersc.gov. In all cases it will appear to you as if you are on "franklin.nersc.gov." The login nodes are where you compile codes, submit jobs, and view data. The login nodes on Franklin are directly connected to the internal high-speed "Seastar" network. Because of this you cannot login and work

70

Logging in to Hopper  

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

Logging in Logging in Logging in to Hopper Interactive Access You can log in to Hopper using SSH (Secure Shell) with the following command from any UNIX, Mac OS X, Linux, FreeBSD, etc. command shell or terminal: ssh -l username hopper.nersc.gov There are several SSH-capable clients available for Windows, Mac, and UNIX/Linux machines. NERSC does not support or recommend any particular client. Hopper has 12 login nodes. You will be randomly connected to one of those 12 when you ssh to hopper.nersc.gov. In all cases it will appear to you as if you are on "hopper.nersc.gov." The login nodes are where you compile codes, submit jobs, and view data. The login nodes on Hopper are "external," meaning they are not directly connected to Hopper's internal high-speed "Gemini" network. Because the

71

Chemical Logging At Raft River Geothermal Area (1979) | Open Energy  

Open Energy Info (EERE)

Logging At Raft River Geothermal Area (1979) Logging At Raft River Geothermal Area (1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Chemical Logging At Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Chemical Logging Activity Date 1979 Usefulness useful DOE-funding Unknown Exploration Basis To use new methods to assist geothermal well drilling. Notes Chemical logging resulted in the development of a technique to assist in geothermal well drilling and resource development. Calcium-alkalinity ratios plotted versus drill depth assisted in defining warm and hot water aquifers. Correlations between the calcium-alkalinity log and lithologic logs were used to determine aquifer types and detection of hot water zones

72

NMR logging apparatus  

DOE Patents (OSTI)

Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.

Walsh, David O; Turner, Peter

2014-05-27T23:59:59.000Z

73

Gamma Log At Coso Geothermal Area (1977) | Open Energy Information  

Open Energy Info (EERE)

Gamma Log At Coso Geothermal Area (1977) Gamma Log At Coso Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gamma Log At Coso Geothermal Area (1977) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Gamma Log Activity Date 1977 Usefulness not indicated DOE-funding Unknown Notes extensive geophysical logging surveys were conducted: natural gamma and neutron porosity logs indicate gross rock type References Galbraith, R. M. (1 May 1978) Geological and geophysical analysis of Coso Geothermal Exploration Hole No. 1 (CGEH-1), Coso Hot Springs KGRA, California Goranson, C.; Schroeder, R. (1 June 1978) Static downhole characteristics of well CGEH-1 at Coso Hot Springs, China Lake, California Retrieved from "http://en.openei.org/w/index.php?title=Gamma_Log_At_Coso_Geothermal_Area_(1977)&oldid=510780"

74

E-Print Network 3.0 - acoustic cardiographic assessment Sample...  

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ACOUSTICS: RESULTS OF AN EXPERIMENTAL LABORATORY INVESTIGATION Summary: wrightii. A one-dimensional acoustic resonator technique was used to assess the biomass and effective......

75

Grid Logging: Best Practices Guide  

SciTech Connect

The purpose of this document is to help developers of Grid middleware and application software generate log files that will be useful to Grid administrators, users, developers and Grid middleware itself. Currently, most of the currently generated log files are only useful to the author of the program. Good logging practices are instrumental to performance analysis, problem diagnosis, and security auditing tasks such as incident tracing and damage assessment. This document does not discuss the issue of a logging API. It is assumed that a standard log API such as syslog (C), log4j (Java), or logger (Python) is being used. Other custom logging API or even printf could be used. The key point is that the logs must contain the required information in the required format. At a high level of abstraction, the best practices for Grid logging are: (1) Consistently structured, typed, log events; (2) A standard high-resolution timestamp; (3) Use of logging levels and categories to separate logs by detail and purpose; (4) Consistent use of global and local identifiers; and (5) Use of some regular, newline-delimited ASCII text format. The rest of this document describes each of these recommendations in detail.

Tierney, Brian L; Tierney, Brian L; Gunter, Dan

2008-04-01T23:59:59.000Z

76

Acoustic repair: Recent experience with the acoustic control system (ACS) for improving acoustic conditions in two existing venues  

Science Journals Connector (OSTI)

Active acoustics systems are becoming more prevalent in architectural acoustics practice particularly in the context of repairing or improving acoustics in existing venues. Governmental policies to reduce funds and subsidies put into new facilities for the performing arts are another reason for designers to consider the use of active acoustics. This paper highlights two recent examples of such installations of ACS systems one at the Sydney Opera House Concert Hall and the other at MBCCH Winnepeg Canada. Collaboration between the system designer the musicians and the acoustics consultant will be emphasized along with techniques used to evaluate the systems' performance in the halls.

Timothy E. Gulsrud; Arthur van Maurik

2011-01-01T23:59:59.000Z

77

Image Logs At Coso Geothermal Area (2011) | Open Energy Information  

Open Energy Info (EERE)

Image Logs At Coso Geothermal Area (2011) Image Logs At Coso Geothermal Area (2011) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Image Logs At Coso Geothermal Area (2011) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Image Logs Activity Date 2011 Usefulness useful DOE-funding Unknown Exploration Basis Determine crustul stress heterogeneity Notes Borehole induced structures in image logs of wells from the Coso Geothermal Field (CGF) record variation in the azimuth of principal stress. Image logs of these structures from five wells were analyzed to quantify the stress heterogeneity for three geologically distinct locations: two wells within the CGF (one in an actively produced volume), two on the margin of the CGF and outside the production area, and a control well several tens of km

78

Geotech Logging Services | Open Energy Information  

Open Energy Info (EERE)

Logging Services Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Geotech Logging Services Author Geotech Logging Servces LLC Published Publisher...

79

Definition: Acoustic Televiewer | Open Energy Information  

Open Energy Info (EERE)

Televiewer Televiewer Jump to: navigation, search Dictionary.png Acoustic Televiewer The Acoustic Televiewer (ATV) log provides a very-high resolution, sonic image of the borehole wall. The tool consists of an ultrasonic transducer coupled with a downhole inclinometer. These devices are used to generate an oriented image of seismic velocity variation and wave amplitude. These images are then examined and highlighted to reveal fractures, bedding planes and orientation of those features. The log is useful for strata and fracture delineation, and can also be used to evaluate compressional-wave velocity, borehole deviation and eccentricity.[1] References ↑ http://www.dot.ca.gov/hq/esc/geotech/gg/atv_log.htm Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

80

Laser-excited acoustic oscillations in silver and bismuth nanowires  

E-Print Network (OSTI)

Coherent acoustic oscillations in Bi and Ag nanowire samples were studied with a femtosecond pump-probe technique and detection of the scattered light. The observed optical and acoustic properties reflect the nanostructure of these materials...

Jerebtsov, Sergey N.; Kolomenskii, Alexandre A.; Liu, Haidong; Zhang, Hong; Ye, Zuxin; Luo, Zhiping; Wu, Wenhao; Paulus, Gerhard G.; Schuessler, Hans A.

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Acoustics education in Ukraine  

Science Journals Connector (OSTI)

Acoustics education in Ukraine is considered. In more than 40 universities students learn acoustics: in the acoustics department of the National Technical University in Ukraine (only one department in Ukraine) and many related departments such as Nondestructive Testing Physics Electrical Engineering etc. Acoustical specializations of departments are presented. The most promising and developing acoustical specialization is biomedical acoustics.

Stanislav M. Mayevskyy; Leonid M. Gelman

1999-01-01T23:59:59.000Z

82

Image Logs At Coso Geothermal Area (2004) | Open Energy Information  

Open Energy Info (EERE)

Logs At Coso Geothermal Area (2004) Logs At Coso Geothermal Area (2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Image Logs At Coso Geothermal Area (2004) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Image Logs Activity Date 2004 Usefulness not indicated DOE-funding Unknown Exploration Basis EGS potential of Coso Geothermal Region Notes During the second year of this project, wellbore logs and stress data were acquired in a new production well drilled in the Coso Geothermal Field, 38C-9. The image analysis results include the discrimination of natural from drilling induced fractures in wellbore image data, natural fracture characterization, and wellbore failure analysis References Sheridan, J.; Hickman, S.H. (1 January 2004) IN SITU STRESS,

83

LOG HAZARD REGRESSION Huiying Sun  

E-Print Network (OSTI)

LOG HAZARD REGRESSION by Huiying Sun Ph.D, Harbin Institute of Technology, Harbin, CHINA, 1991 .................................................................... .................................................................... .................................................................... .................................................................... THE UNIVERSITY OF BRITISH COLUMBIA September, 1999 c flHuiying Sun, 1999 #12; Abstract We propose using

Heckman, Nancy E.

84

Gamma Log At Alum Area (Moos & Ronne, 2010) | Open Energy Information  

Open Energy Info (EERE)

Gamma Log At Alum Area (Moos & Ronne, 2010) Gamma Log At Alum Area (Moos & Ronne, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gamma Log At Alum Geothermal Area (Moos & Ronne, 2010) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Gamma Log Activity Date Usefulness useful DOE-funding Unknown Notes Density, photo-electric factor (PEF), neutron, and gamma ray (GR) logs provided sufficient information to clearly delineate basement lithologic variations, suggesting that pulsed neutron logs may not in many cases be needed, References Daniel Moos, Joel Ronne (2010) Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Retrieved from "http://en.openei.org/w/index.php?title=Gamma_Log_At_Alum_Area_(Moos_%26_Ronne,_2010)&oldid=510779"

85

Neutron Log At Alum Area (Moos & Ronne, 2010) | Open Energy Information  

Open Energy Info (EERE)

Neutron Log At Alum Area (Moos & Ronne, 2010) Neutron Log At Alum Area (Moos & Ronne, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Neutron Log At Alum Geothermal Area (Moos & Ronne, 2010) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Neutron Log Activity Date Usefulness useful DOE-funding Unknown Notes Density, photo-electric factor (PEF), neutron, and gamma ray (GR) logs provided sufficient information to clearly delineate basement lithologic variations, suggesting that pulsed neutron logs may not in many cases be needed, References Daniel Moos, Joel Ronne (2010) Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Retrieved from "http://en.openei.org/w/index.php?title=Neutron_Log_At_Alum_Area_(Moos_%26_Ronne,_2010)&oldid=511025"

86

Acoustic plug release indicator  

SciTech Connect

The present invention comprises an acoustic plug release indicator system. The acoustic plug release indicatior system comprises a microphone, recording system and operator listening device.

Carter, E.E. Jr.

1984-09-04T23:59:59.000Z

87

Two-level expert system for well-log correlation  

SciTech Connect

One limitation of conventional (either manual or machine) well-log correlation is that correlation loops do not close; that is, different correlations result depending on the order in which logs are matched. The authors have devised a two-level expert system for a well-log correlation which addresses this nonclosure problem. The first level of the expert system uses heuristic rules to determine zone attributes and degree of matching. The zones or segments of logs are predetermined either by eye or by any zonation algorithm. The second level of the system deals with machine learning and dynamic programming (an optimization technique that uses recursion to find best matches). A set of optimal weights is obtained through machine learning. These weights subsequently will be used in a dynamic programming technique. Training sets for machine learning are selected to reflect geologic settings of the region. Dynamic programming is then used to match the individual zones of logs, which may exhibit gaps, repetitions, and/or thickening-thinning. Five examples having the following features will be illustrated in the poster session: anticline, unconformity, reverse fault, normal fault with an anticline, and growth fault. The first four are made up of synthetic logs, and the fifth is a real-world example of a Gulf Coast growth fault having an extra layer on the downthrown side.

Mahmoud, W.; Chen, H.C.; Shultz, A.W.; Fang, J.H.

1989-03-01T23:59:59.000Z

88

Writing magnetic patterns with surface acoustic waves  

SciTech Connect

A novel patterning technique that creates magnetization patterns in a continuous magnetostrictive film with surface acoustic waves is demonstrated. Patterns of 10??m wide stripes of alternating magnetization and a 3??m dot of reversed magnetization are written using standing and focusing acoustic waves, respectively. The magnetization pattern is size-tunable, erasable, and rewritable by changing the magnetic field and acoustic power. This versatility, along with its solid-state implementation (no moving parts) and electronic control, renders it as a promising technique for application in magnetic recording, magnonic signal processing, magnetic particle manipulation, and spatial magneto-optical modulation.

Li, Weiyang; Buford, Benjamin; Jander, Albrecht; Dhagat, Pallavi, E-mail: dhagat@eecs.oregonstate.edu [School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, Oregon 97331 (United States)

2014-05-07T23:59:59.000Z

89

Acoustic resonance for nonmetallic mine detection  

SciTech Connect

The feasibility of acoustic resonance for detection of plastic mines was investigated by researchers at the Oak Ridge National Laboratory`s Instrumentation and Controls Division under an internally funded program. The data reported in this paper suggest that acoustic resonance is not a practical method for mine detection. Representative small plastic anti-personnel mines were tested, and were found to not exhibit detectable acoustic resonances. Also, non-metal objects known to have strong acoustic resonances were tested with a variety of excitation techniques, and no practical non-contact method of exciting a consistently detectable resonance in a buried object was discovered. Some of the experimental data developed in this work may be useful to other researchers seeking a method to detect buried plastic mines. A number of excitation methods and their pitfalls are discussed. Excitation methods that were investigated include swept acoustic, chopped acoustic, wavelet acoustic, and mechanical shaking. Under very contrived conditions, a weak response that could be attributed to acoustic resonance was observed, but it does not appear to be practical as a mine detection feature. Transfer properties of soil were investigated. Impulse responses of several representative plastic mines were investigated. Acoustic leakage coupling, and its implications as a disruptive mechanism were investigated.

Kercel, S.W.

1998-04-01T23:59:59.000Z

90

Acoustic transducer  

DOE Patents (OSTI)

An acoustic transducer is described comprising a one-piece hollow mandrel into the outer surface of which is formed a recess with sides perpendicular to the central axis of the mandrel and separated by a first distance and with a bottom parallel to the central axis and within which recess are a plurality of washer-shaped discs of a piezoelectric material and at least one disc of a temperature-compensating material with the discs being captured between the sides of the recess in a pre-stressed interference fit, typically at 2,000 psi of compressive stress. The transducer also includes a power supply and means to connect to a measurement device. The transducer is intended to be used for telemetry between a measurement device located downhole in an oil or gas well and the surface. The transducer is of an construction that is stronger with fewer joints that could leak fluids into the recess holding the piezoelectric elements than is found in previous acoustic transducers. 4 figs.

Drumheller, D.S.

1997-12-30T23:59:59.000Z

91

Acoustic transducer  

DOE Patents (OSTI)

An acoustic transducer comprising a one-piece hollow mandrel into the outer surface of which is formed a recess with sides perpendicular to the central axis of the mandrel and separated by a first distance and with a bottom parallel to the central axis and within which recess are a plurality of washer-shaped discs of a piezoelectric material and at least one disc of a temperature-compensating material with the discs being captured between the sides of the recess in a pre-stressed interference fit, typically at 2000 psi of compressive stress. The transducer also includes a power supply and means to connect to a measurement device. The transducer is intended to be used for telemetry between a measurement device located downhole in an oil or gas well and the surface. The transducer is of an construction that is stronger with fewer joints that could leak fluids into the recess holding the piezoelectric elements than is found in previous acoustic transducers.

Drumheller, Douglas S. (Cedar Crest, NM)

1997-01-01T23:59:59.000Z

92

Definition: Density Log | Open Energy Information  

Open Energy Info (EERE)

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

93

Acoustic cryocooler  

DOE Patents (OSTI)

An acoustic cryocooler with no moving parts is formed from a thermoacoustic driver (TAD) driving a pulse tube refrigerator (PTR) through a standing wave tube. Thermoacoustic elements in the TAD are spaced apart a distance effective to accommodate the increased thermal penetration length arising from the relatively low TAD operating frequency in the range of 15-60 Hz. At these low operating frequencies, a long tube is required to support the standing wave. The tube may be coiled to reduce the overall length of the cryocooler. One or two PTR's are located on the standing wave tube adjacent antinodes in the standing wave to be driven by the standing wave pressure oscillations. It is predicted that a heat input of 1000 W at 1000 K will maintian a cooling load of 5 W at 80 K.

Swift, Gregory W. (Santa Fe, NM); Martin, Richard A. (Los Alamos, NM); Radenbaugh, Ray (Louisville, CO)

1990-01-01T23:59:59.000Z

94

Internet Data logging and Display  

E-Print Network (OSTI)

. The solution presented here is to accomplish these goals is to include a miniature web server in a remote-logging module, which we designed as part of our device. Thus allowing data to be accessed more frequently, via the Internet. As it currently stands...

Sweeney, J., Jr.; Culp, C.; Haberl, J. S.

2001-01-01T23:59:59.000Z

95

The Impact of the Russian Log Export Tariff on the Global Market for Logs and Lumber  

E-Print Network (OSTI)

in Russia, estimated at 808,790,000 hectares, represents 20.5% of total global forest area and almost halfSharfofLogExports(%) Figure 1. Russian softwood log exports represent over a quarter of total global log exports. SourceThe Impact of the Russian Log Export Tariff on the Global Market for Logs and Lumber CINTRAFOR News

96

Definition: Resistivity Log | Open Energy Information  

Open Energy Info (EERE)

Resistivity Log Resistivity Log Jump to: navigation, search Dictionary.png Resistivity Log Electrical resistivity logging is the measurement of potential (voltage) differences resulting from electrical current flow in the vicinity of a borehole in order to determine formation resistivity.[1] View on Wikipedia Wikipedia Definition Resistivity logging is a method of well logging that works by characterizing the rock or sediment in a borehole by measuring its electrical resistivity. Resistivity is a fundamental material property which represents how strongly a material opposes the flow of electric current. In these logs, resistivity is measured using 4 electrical probes to eliminate the resistance of the contact leads. The log must run in holes containing electrically conductive mud or water. Resistivity logging is

97

Applying multiwell normalization in open hole log analysis  

E-Print Network (OSTI)

A major problem when analyzing open hole well logging data in large fields is the fact that the logs were run using different logging service companies, using different logging tools over a long time span. To obtain correct log interpretations...

Sinanan, Haydn Brent

2012-06-07T23:59:59.000Z

98

Simultaneous acoustic and microwave backscattering from the sea surface  

Science Journals Connector (OSTI)

Simultaneous and coincident measurements of acoustic and microwavebackscatter from the air/sea interface were obtained during Phase II of the SAXON-FPN experiment in December 1992 and again in March 1993. The acoustic and microwave grazing angles were both set to 17 and the wavelengths were matched being set to 2.14 3.00 and 5.66 cm corresponding to respectively acoustic frequencies of 26.5 50 and 70 kHz and microwave frequencies of 5.3 10 and 14 GHz. Backscattering cross sections normalized by ensonified area for the acoustic (? 0 a ) and microwave (? 0 m ) returns were determined and their dependence on wind speed was investigated. The acoustic scattering strength is defined as 10? log 10 (? 0 a ) and the microwavescattering strength is defined as 10? log 10 (? 0 m )?10? log 10 (4?). The results of these experiments show that the two scattering strengths are comparable at wind speeds below about 3 m/s but that the acoustic scattering strength increases much faster than the microwavescattering strength with increasing wind speed until reaching saturation. If these wind-speed dependencies are represented by a power law U n then n is 56 for ? 0 a and 24 for ? 0 m for wind speeds between 2 and 7 m/s. This difference is ascribed to the effect of bubbles on the acoustic backscatter. The more rapid increase of ? 0 a compared to ? 0 m implies that for our 17 grazing angle acoustic scattering from the surface is negligible at all but the lowest wind speeds. Therefore a simple model is used for bubble scattering to fit the acoustic data as a function of wind speed for all three acoustic frequencies. The bubble densities required to fit the data agree well with previous measurements of near-surface bubble distributions. The model predicts an overshoot of the acoustic scattering strength (above the saturation level) at moderate wind speeds which is clearly seen in the data at 26.5 and 70 kHz. Finally a composite surface scatteringmodel is utilized for the pure surface scattering component along with the bubble model to predict the wind-speed dependence of the acoustic scattering strength at a 45 grazing angle and compare the results with earlier measurements.

Peter H. Dahl; William J. Plant; Bernd Ntzel; Anke Schmidt; Heinz Herwig; Eugene A. Terray

1997-01-01T23:59:59.000Z

99

Energy Citations Database (ECD) - Alerts Log On  

Office of Scientific and Technical Information (OSTI)

Log On You must Log On to use the ECD Alerts. Alerts provide users with e-mail notification of updates to the ECD in specific areas of interest. If you wish to receive an Alert and...

100

Vertical Flowmeter Logging | Open Energy Information  

Open Energy Info (EERE)

Flowmeter Logging Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Vertical Flowmeter Logging Author U.S. Geological Survey Published USGS Groundwater...

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Geological well log analysis. Third ed  

SciTech Connect

Until recently, well logs have mainly been used for correlation, structural mapping, and quantitive evaluation of hydrocarbon bearing formations. This third edition of Geologic Well Log Analysis, however, describes how well logs can be used for geological studies and mineral exploration. This is done by analyzing well logs for numerous parameters and indices of significant mineral accumulation, primarily in sediments. Contents are: SP and Eh curves as redoxomorphic logs; sedimentalogical studies by log curve shapes; exploration for stratigraphic traps; continuous dipmeter as a structural tool; continuous dipmeter as a sedimentation tool; Paleo-facies logging and mapping; hydrogeology 1--hydrodynamics of compaction; hydrogeology 2--geostatic equilibrium; and hydrogeology 3--hydrodynamics of infiltration. Appendixes cover: Computer program for calculating the dip magnitude, azimuth, and the degree and orientation of the resistivity anisotrophy; a lithology computer program for calculating the curvature of a structure; and basic log analysis package for HP-41CV programmable calculator.

Pirson, S.J.

1983-01-01T23:59:59.000Z

102

Definition: Mud Logging | Open Energy Information  

Open Energy Info (EERE)

Mud Logging Mud Logging Jump to: navigation, search Dictionary.png Mud Logging Mud logs enable the geological description and analysis of rock cuttings suspended within the returned drilling mud and can provide a variety of useful information regarding reservoir parameters.[1] View on Wikipedia Wikipedia Definition Mud logging is the creation of a detailed record of a borehole by examining the cuttings of rock or brought to the surface by the circulating drilling medium (most commonly mud). Mud logging is usually performed by a third-party mud logging company. This provides well owners and producers with information about the lithology and fluid content of the borehole while drilling. Historically it is the earliest type of well log. Under some circumstances compressed air is employed as a circulating fluid,

103

Cognition Based Collaboration Log for CSCW Datong Chen & Hans-Werner Gellersen  

E-Print Network (OSTI)

Cognition Based Collaboration Log for CSCW Datong Chen & Hans-Werner Gellersen Tec collaborative work. Analysis and recognition techniques are applied to the collected information and to obtain and stored in a special designed content-based multimedia database called collaboration log

Chen, Datong

104

Pressure Temperature Log At Silver Peak Area (DOE GTP) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Pressure Temperature Log At Silver Peak Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Silver Peak Area (DOE GTP) Exploration Activity Details Location Silver Peak Area Exploration Technique Pressure Temperature Log Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Pressure_Temperature_Log_At_Silver_Peak_Area_(DOE_GTP)&oldid=511053" Categories: Exploration Activities

105

University of Florida Cell Phone Usage Log  

E-Print Network (OSTI)

University of Florida Cell Phone Usage Log Information below must be compared to the monthly statement provided by the cell phone service provider. It is required that this log be completed when of the last page of the usage log. Employee's Name:Business Device - Cell Phone Number: Printed Name

Sin, Peter

106

LogOS: an Automatic Logging Framework for Service-Oriented Architectures  

E-Print Network (OSTI)

LogOS: an Automatic Logging Framework for Service-Oriented Architectures Stéphane Frénot Université architecture focuses on service oriented log- ging for component based architecture. It focuses on two providers in cases of failures. We motivate the need for an automatic logging framework in service-oriented

Paris-Sud XI, Université de

107

15 Acoustic Daylight Imaging in the Michael J. Buckingham  

E-Print Network (OSTI)

of radiation, including light. Acoustic techniques are thus a pre- ferred choice for probing the ocean depths. Two types of acoustic sys- tems, passive sonar and active sonar, are commonly used as detection devices in the ocean [1]. A passive sonar simply listens for the sound radiated by a target

Buckingham, Michael

108

Definition: Gamma Log | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Gamma Log Jump to: navigation, search Dictionary.png Gamma Log Gamma logging is a method of measuring naturally occurring gamma radiation to characterize the rock or sediment in a borehole or drill hole. It is a wireline logging method used in mining, mineral exploration, water-well drilling, for formation evaluation in oil and gas well drilling and for other related purposes. Different types of rock emit different amounts and different spectra of natural gamma radiation.[1] View on Wikipedia Wikipedia Definition Gamma ray logging is a method of measuring naturally occurring gamma radiation to characterize the rock or sediment in a borehole or drill hole. It is a wireline logging method used in mining, mineral exploration,

109

Borehole logging for uranium by measurement of natural ?-radiation  

Science Journals Connector (OSTI)

?-Ray measurements have been made in boreholes since 1939, for the purpose of detecting the radiation from naturally occuring radioelements in rocks. Logs of the ?-radiation in boreholes have evolved to their present acceptance as a quantitative measurement of uranium concentration for uranium exploration and mining development projects. Many factors influence these ?-ray measurements and consequently new methods of overcoming previous problems have had to be developed. Calibration facilities with model holes have been established in several countries to support quantitative borehole measurements. New high density detector materials have been evaluated and have shown to yield considerable improvements for operation in the restricted environment of the borehole. ?-Ray spectral logging has become available partially as a result of spin-off from parallel developments in surface and airborne ?-ray spectrometric survey equipment. The use of the high resolution solid state detector has proceeded through a series of developments to its present availability as a commercial borehole logging service in spite of the inherent detector cooling problems. Digital measurements are replacing the earlier analog measurements, and minicomputer- or micro processor-based logging systems have enabled new data processing techniques such as inverse filtering, to be implemented in real time at the site of the borehole.

P.G. Killeen

1983-01-01T23:59:59.000Z

110

Fluid-Rock Characterization and Interactions in NMR Well Logging  

SciTech Connect

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

George J. Hirasaki; Kishore K. Mohanty

2005-09-05T23:59:59.000Z

111

Acoustics by additive manufacturing:.  

E-Print Network (OSTI)

??This study focuses on exploring the merging field of additive manufacturing and acoustics and introduces a new type of sound absorber which is regulating performance (more)

Setaki, F.

2012-01-01T23:59:59.000Z

112

Density Log at Alum Area (Moos & Ronne, 2010) | Open Energy Information  

Open Energy Info (EERE)

Moos & Ronne, 2010) Moos & Ronne, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Density Log at Alum Geothermal Area (Moos & Ronne, 2010) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Density Log Activity Date Usefulness useful DOE-funding Unknown Notes Density, photo-electric factor (PEF), neutron, and gamma ray (GR) logs provided sufficient information to clearly delineate basement lithologic variations, suggesting that pulsed neutron logs may not in many cases be needed, and density and electrical resistivity data were important to calibrate structural models based on surface surveys. References Daniel Moos, Joel Ronne (2010) Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well,

113

Pressure Temperature Log At Vale Hot Springs Area (Combs, Et Al., 1999) |  

Open Energy Info (EERE)

Vale Hot Springs Area (Combs, Et Al., 1999) Vale Hot Springs Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Vale Hot Springs Area (Combs, Et Al., 1999) Exploration Activity Details Location Vale Hot Springs Area Exploration Technique Pressure Temperature Log Activity Date Usefulness not indicated DOE-funding Unknown Notes Numerous temperature logs were taken with Sandia's platinum-resistance-thermometer (PRT) tool which along with a Sandia logging truck remained on-site for the entire project. Static temperature logs (no flow in hole) were done with this tool when coring operations were suspended for bit trips, rig maintenance, or other time intervals that would permit the hole to warm up near its static temperature K580gradient.

114

Resistivity Log At Long Valley Caldera Area (Sorey, Et Al., 1991) | Open  

Open Energy Info (EERE)

Resistivity Log At Long Valley Caldera Area (Sorey, Resistivity Log At Long Valley Caldera Area (Sorey, Et Al., 1991) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Resistivity Log Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Lithologic and resistivity logs from wells drilled into areas of less than 20 ohm-m resistivity show clay mineralization resulting from hydrothermal alteration within the volcanic fill (Nordquist, 1987). Low resistivity in the vicinity of well 44-16, identified in wellbore geophysical logs and two dimensional MT modeling is restricted to the thermal-fluid reservoirs in the early rhyolite and Bishop Tuff (Nordquist, 1987; Suemnicht, 1987). The MT data suggest that the resistivity structure near Mammoth Mountain is

115

Pressure Temperature Log At Mccoy Geothermal Area (DOE GTP) | Open Energy  

Open Energy Info (EERE)

Pressure Temperature Log At Mccoy Geothermal Area (DOE GTP) Pressure Temperature Log At Mccoy Geothermal Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Mccoy Geothermal Area (DOE GTP) Exploration Activity Details Location Mccoy Geothermal Area Exploration Technique Pressure Temperature Log Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Pressure_Temperature_Log_At_Mccoy_Geothermal_Area_(DOE_GTP)&oldid=511052" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

116

Request Log Closedl Date Yes  

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

6 FOIA 6 FOIA - Request Log Closedl Date Yes 01 127106 Yes 02/23/06 Yes 04/05/06 Yes 04/03/06 Yes 04/03/06 Yes 05/22/06 Yes 35/30/06 - No. - 00 1 - 002 - 003 - 004 005 006 - 307 - Dated 01 125106 0211 6106 03/29/06 03/31 106 14/03/06 1511 8/06 )5/22/06 Date Rec'd 0 I I2 5/06 02/23/06 03130/06 0313 1 106 04/03/06 05/22/06 05/22/06 HQ or Dir. Direct Transfer from HQ Direct Trans from HQ Direct Direct Transfer 'rom HQ Subject Requesting a list of all your Procurement card holders Requesting copies of any and all Freedom of Information Act (FOIA) requests submitted to the Department of Energy (DOE) by Donna Wright, the Bradenton Herald, or any other individual that requested documentation or information pertaining to the Loral American Beryllium Corporation (also known as the

117

The Measurement of Bubble-Size Distributions by Acoustical Backscatter  

Science Journals Connector (OSTI)

A multifrequency acoustical-backscatter technique is described for determining the size distribution of bubbles with radii between 8 and 130 m. The method makes use of the resonance in the microbubbles and operates at six frequencies ranging ...

Svein Vagle; David M. Farmer

1992-10-01T23:59:59.000Z

118

Research and Methodological Foundations of Transaction Log  

E-Print Network (OSTI)

approach to data collection and a research method for both system performance and user behavior analysis and users of that system. These log files can come from a variety of computers and systems (Websites interactions. Transaction log analysis is the methodological approach to studying online systems and users

Jansen, James

119

CORRUPTION AND ILLEGAL LOGGING IN THE WOOD  

E-Print Network (OSTI)

CORRUPTION AND ILLEGAL LOGGING IN THE WOOD PRODUCTS MARKET: the Italian experience in controlling% of wood international trade is based on illegal logging; a total value of 150 Billion $/year (OECD Environmental Outlook, 2001) · At least 50% of wood removals in the Amazon basin, Central Africa and South

Pettenella, Davide

120

SOME RESULTS ON SCATTERING FOR LOG-SUBCRITICAL AND LOG-SUPERCRITICAL  

E-Print Network (OSTI)

SOME RESULTS ON SCATTERING FOR LOG-SUBCRITICAL AND LOG-SUPERCRITICAL NONLINEAR WAVE EQUATIONS HSI equations. First, we consider the H1 x ? L2 x scattering theory for the energy log- subcritical wave regularity) Sobolev space. We include also some observation about scattering in the energy subcritical case

Weinberger, Hans

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While these samples are representative of the content of NLEBeta,
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121

Definition: Chemical Logging | Open Energy Information  

Open Energy Info (EERE)

Logging Logging Jump to: navigation, search Dictionary.png Chemical Logging Chemical logging produces a chemical profile of the formation fluid within a well based on the measurement of changes in the chemical composition of the drilling fluid during drilling operations.[1] References ↑ http://www.osti.gov/bridge/servlets/purl/6076582-xtVTIk/6076582.pdf Ret Like Like You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Chemical_Logging&oldid=600357" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services OpenEI partners with a broad range of international organizations to grow

122

Acoustic Heating Peter Ulmschneider  

E-Print Network (OSTI)

Acoustic Heating Peter Ulmschneider lnstitut fiir Theoretische Astrophysik der Universitat waves are a viable and prevalent heating mechanism both in early- and in late-type stars. Acoustic heating appears to be a dominant mechanism for situations where magnetic fields are weak or absent

Ulmschneider, Peter

123

Distributed Acoustic and Seismic Sensing  

Science Journals Connector (OSTI)

An overview of fiber optic distributed acoustic and seismic sensor system architectures is presented.

Kirkendall, Clay

124

Acoustic cooling engine  

DOE Patents (OSTI)

An acoustic cooling engine with improved thermal performance and reduced internal losses comprises a compressible fluid contained in a resonant pressure vessel. The fluid has a substantial thermal expansion coefficient and is capable of supporting an acoustic standing wave. A thermodynamic element has first and second ends and is located in the resonant pressure vessel in thermal communication with the fluid. The thermal response of the thermodynamic element to the acoustic standing wave pumps heat from the second end to the first end. The thermodynamic element permits substantial flow of the fluid through the thermodynamic element. An acoustic driver cyclically drives the fluid with an acoustic standing wave. The driver is at a location of maximum acoustic impedance in the resonant pressure vessel and proximate the first end of the thermodynamic element. A hot heat exchanger is adjacent to and in thermal communication with the first end of the thermodynamic element. The hot heat exchanger conducts heat from the first end to portions of the resonant pressure vessel proximate the hot heat exchanger. The hot heat exchanger permits substantial flow of the fluid through the hot heat exchanger. The resonant pressure vessel can include a housing less than one quarter wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir. The frequency of the acoustic driver can be continuously controlled so as to maintain resonance.

Hofler, Thomas J. (Los Alamos, NM); Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Santa Fe, NM); Migliori, Albert (Santa Fe, NM)

1988-01-01T23:59:59.000Z

125

OpLog: a library for scaling update-heavy data structures  

E-Print Network (OSTI)

Existing techniques (e.g., RCU) can achieve good multi-core scaling for read-mostly data, but for update-heavy data structures only special-purpose techniques exist. This paper presents OpLog, a general-purpose library ...

Boyd-Wickizer, Silas

2014-09-16T23:59:59.000Z

126

Acoustic well cleaner  

DOE Patents (OSTI)

A method and apparatus are disclosed for cleaning the wellbore and the near wellbore region. A sonde is provided which is adapted to be lowered into a borehole and which includes a plurality of acoustic transducers arranged around the sonde. Electrical power provided by a cable is converted to acoustic energy. The high intensity acoustic energy directed to the borehole wall and into the near wellbore region, redissolves or resuspends the material which is reducing the permeability of the formation and/or restricting flow in the wellbore.

Maki, Jr., Voldi E. (11904 Bell Ave., Austin, TX 78759-2415); Sharma, Mukul M. (Dept. of Petroleum Engr. Univ. of Texas, Austin, TX 78712)

1997-01-21T23:59:59.000Z

127

Acoustical heat pumping engine  

DOE Patents (OSTI)

The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium. 2 figs.

Wheatley, J.C.; Swift, G.W.; Migliori, A.

1983-08-16T23:59:59.000Z

128

Energy Citations Database (ECD) - Alerts Log On  

Office of Scientific and Technical Information (OSTI)

ECD Alerts Log On Alerts provide users with e-mail notification of updates to the ECD in specific areas of interest. If you wish to receive an Alert and are not registered, please...

129

Logs Wood Chips Straw Corn Switchgrass  

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

Clean energy can come from the sun. The energy in wind can make electricity. Bioenergy comes from plants we can turn into fuel. Logs Wood Chips Straw Corn Switchgrass We can use...

130

Logging-while-coring method and apparatus  

DOE Patents (OSTI)

A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wireline and latching tool The core collar includes logging-while-drilling tools for the simultaneous measurement of formation properties during the core excavation process. Examples of logging-while-drilling tools include nuclear sensors, resistivity sensors, gamma ray sensors, and bit resistivity sensors. The disclosed method allows for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique scientific advantages.

Goldberg, David S. (New York, NY); Myers, Gregory J. (Cornwall, NY)

2007-11-13T23:59:59.000Z

131

CMLOG: A common message logging system  

SciTech Connect

The Common Message Logging (CMLOG) system is an object-oriented and distributed system that not only allows applications and systems to log data (messages) of any type into a centralized database but also lets applications view incoming messages in real-time or retrieve stored data from the database according to selection rules. It consists of a concurrent Unix server that handles incoming logging or searching messages, a Motif browser that can view incoming messages in real-time or display stored data in the database, a client daemon that buffers and sends logging messages to the server, and libraries that can be used by applications to send data to or retrieve data from the database via the server. This paper presents the design and implementation of the CMLOG system meanwhile it will also address the issue of integration of CMLOG into existing control systems.

Chen, J.; Akers, W.; Bickley, M.; Wu, D.; Watson, W. III [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Control Software Group

1997-12-01T23:59:59.000Z

132

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

SciTech Connect

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

Normann, Randy A.

2014-12-01T23:59:59.000Z

133

Investigations of stage acoustics at the Sydney Opera House Concert Hall  

Science Journals Connector (OSTI)

Improvements to onstage hearing conditions were made at the Sydney Opera House Concert Hall during a series of acoustics trials conducted during September 2009. During the acoustic trials physical changes were made to reflective surfaces around the platform and an active acoustics system was demonstrated. Taken together the temporary changes had a positive influence on hearing conditions during both rehearsals and performances by the Sydney Symphony Orchestra and Sydney Philharmonia. This paper reviews the strategies used to implement the improvements to stage acoustics and discusses the unique techniques used to evaluate the stage acoustics both subjectively and objectively.

Timothy E. Gulsrud

2011-01-01T23:59:59.000Z

134

Exponential coefficient plots for identifying cement channels from temperature logs  

SciTech Connect

One technique for identifying a cement channel in such a well is to inject cold water or diesel fuel for a period of time, followed by recording shut-in temperature profiles after the injection ceases. Qualitative judgements are made from the appearance of these profiles in order to confirm the existence of a channel. Alternatively, by processing the temperature logs mathematically, an exponential coefficient may be calculated and plotted against depth. This exponential coefficient plot is very responsive to the presence of cold fluid in a cement channel, and confirms a channel's existence quantitatively and conclusively. This paper discusses use of such a mathematical relationship in a predictive fashion for identifying injection zones. Methods are given for deriving and plotting the exponential coefficients from temperature logs of a well placed on cold fluid injection. Three examples are presented on the application of exponential coefficient plots to actual field logs for confirmation of suspected channels and for assessment of the uniformity of cement bonding.

Barnette, J.C.; Lanuke, E.W.; Carlson, N.R.

1984-01-01T23:59:59.000Z

135

VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase ____________________________ Week Ended (Sunday) _________________  

E-Print Network (OSTI)

VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase (rev. 10/2005-ecb) #12;Vehicle Usage Log Instructions General instructions: The details of the use

Yang, Zong-Liang

136

Manager's Signature Log Privacy Impact Assessment, Office of...  

Energy Savers (EERE)

Manager's Signature Log Privacy Impact Assessment, Office of Science Chicago Office Manager's Signature Log Privacy Impact Assessment, Office of Science Chicago Office Manager's...

137

Green Energy Resources Inc formerly New York International Log...  

Open Energy Info (EERE)

International Log Lumber Company Jump to: navigation, search Name: Green Energy Resources Inc (formerly New York International Log & Lumber Company) Place: San Antonio, Texas...

138

Pressure Temperature Log At Glass Buttes Area (DOE GTP) | Open...  

Open Energy Info (EERE)

Pressure Temperature Log At Glass Buttes Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Glass Buttes...

139

History of engineering acoustics  

Science Journals Connector (OSTI)

At the Providence RI meeting in December 1955 it was proposed to add three new technical committees to the original seven established about a year earlier. Two of the new ones Audio Engineering and Electroacoustics and Sonic and Ultrasonic Engineering are precursors of the present Engineering Acoustics Technical Committee. In 1961 the name of the former committee was shortened to Electroacoustics and I began to attend their meetings. In 1964 the scope of the committee was broadened and its present name of Engineering Acoustics adopted. Early repeatable experiments in engineering acoustics have been attributed to Benjamin Franklin and mostly anecdotal evidence exists before that. Modern developments involve interdisciplinary involvements with all acoustics and specifically with the discovery of new materials applications of their properties and inventions of a wide variety of devices for producing receiving and using acoustics. Henry Joule Bell Berliner Edison the Curie brothers DeForest and Fessenden will be among those noted with some related recognition of them by the Engineering Acoustics TC.

Stanley L. Ehrlich

2000-01-01T23:59:59.000Z

140

Neutron Log At Fort Bliss Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Area (Combs, Et Al., 1999) Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Neutron Log At Fort Bliss Area (Combs, Et Al., 1999) Exploration Activity Details Location Fort Bliss Area Exploration Technique Neutron Log Activity Date Usefulness not indicated DOE-funding Unknown Notes Three principal types of data were obtained from this drilling project: core samples of the lithology penetrated by the holes, records of drilling behavior (such as water level in the hole, changes in rate of penetration etc.), and multiple temperature logs (both during and after drilling) in each well. A suite of geophysical logs (gamma ray, neutron, sonic, and resistivity) was also run after completion of drilling. References Jim Combs, John T. Finger, Colin Goranson, Charles E. Hockox Jr.,

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Gamma Log At Raft River Geothermal Area (1979) | Open Energy Information  

Open Energy Info (EERE)

Gamma Log At Raft River Geothermal Area (1979) Gamma Log At Raft River Geothermal Area (1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gamma Log At Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Gamma Log Activity Date 1979 Usefulness useful DOE-funding Unknown Exploration Basis To allow for the lateral and vertical extrapolation of core and test data and bridged the gap between surface geophysical data and core analyses. Notes Borehole gamma spectrometry can be used to identify anomalous concentration of uranium, thorium, and potassium which are probably due to transportation by hydrothermal solutions. Computer crossplotting was used as an aid to the identification of such rock types as quartzite, quartz monzonite, and

142

Gamma Log At Fort Bliss Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Fort Bliss Area (Combs, Et Al., 1999) Fort Bliss Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gamma Log At Fort Bliss Area (Combs, Et Al., 1999) Exploration Activity Details Location Fort Bliss Area Exploration Technique Gamma Log Activity Date Usefulness not indicated DOE-funding Unknown Notes Three principal types of data were obtained from this drilling project: core samples of the lithology penetrated by the holes, records of drilling behavior (such as water level in the hole, changes in rate of penetration etc.), and multiple temperature logs (both during and after drilling) in each well. A suite of geophysical logs (gamma ray, neutron, sonic, and resistivity) was also run after completion of drilling. References Jim Combs, John T. Finger, Colin Goranson, Charles E. Hockox Jr.,

143

Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia  

E-Print Network (OSTI)

Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia: Case study ofCase study of PrimorskyPrimorsky RegionRegion AlexeyAlexey MorozovMorozov Greenpeace RussiaGreenpeace Russia http://www region: 2000 #12;RUSSIA Official Responses 7 of July 2000 Head of Nature Resource Committee

144

Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia  

E-Print Network (OSTI)

Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia: Case study ofCase study of PrimorskyPrimorsky RegionRegion AlexeyAlexey MorozovMorozov Greenpeace RussiaGreenpeace Russia #12;Primorsky #12;RUSSIA Official Responses 7 of July 2000 Head of Nature Resource Committee of the Primorsky

145

Acoustic Building Infiltration Measurement System (ABIMS)  

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

The Acoustic Building Infilitration Measurement System project is developing an acoustic method of measuring the infiltration of a building envelope.

146

Spacetime transformation acoustics  

E-Print Network (OSTI)

A recently proposed analogue transformation method has allowed the extension of transformation acoustics to general spacetime transformations. We analyze here in detail the differences between this new analogue transformation acoustics (ATA) method and the standard one (STA). We show explicitly that STA is not suitable for transformations that mix space and time. ATA takes as starting point the acoustic equation for the velocity potential, instead of that for the pressure as in STA. This velocity-potential equation by itself already allows for some transformations mixing space and time, but not all of them. We explicitly obtain the entire set of transformations that do not leave its form invariant. It is in these cases that ATA shows its true potential, allowing for building a transformation acoustics method that enables the full range of spacetime transformations. We provide an example of an important transformation which cannot be achieved with STA. Using this transformation, we design and simulate an acoustic frequency converter via the ATA approach. Furthermore, in those cases in which one can apply both the STA and ATA approaches, we study the different transformational properties of the corresponding physical quantities.

C. Garca-Meca; S. Carloni; C. Barcel; G. Jannes; J. Snchez-Dehesa; A. Martnez

2014-07-08T23:59:59.000Z

147

Autonomous adaptive acoustic relay positioning  

E-Print Network (OSTI)

We consider the problem of maximizing underwater acoustic data transmission by adaptively positioning an autonomous mobile relay so as to learn and exploit spatial variations in channel performance. The acoustic channel ...

Cheung, Mei Yi, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

148

2011 Daily Log Report #: 2011-00168  

E-Print Network (OSTI)

2011 Daily Log March 2011 Report #: 2011-00168 Reported: 03/31/2011 1237 Occurred: 03/31/2011 1235 Incident: Medical Emergency Location: Outside of Student Union Disposition: Report--Closed Comments: Female transported to hospital by ambulance for medical treatment. Report #: 2011-00167 Reported: 03/31/2011 1116

Boyce, Richard L.

149

2009 Daily Log Report #: 2009-00202  

E-Print Network (OSTI)

2009 Daily Log March 2009 Report #: 2009-00202 Reported: 03/31/09 2045 Occurred: 03/29/09 1400 to 03/30/09 2000 Incident: Theft Location: Lot Q Disposition: Report--Open Comments: GPS System stolen from unlocked vehicle. Report #: 2009-00201 Reported: 03/31/09 1833 Occurred: Same Incident: Fire

Boyce, Richard L.

150

2009 Daily Log Report #: 2009-00269  

E-Print Network (OSTI)

2009 Daily Log April 2009 Report #: 2009-00269 Reported: 04/30/09 1508 Occurred: Same Incident: Traffic Crash Location: Johns Hill Road and Kenton Drive Disposition: Report--Closed Comments: Two vehicle accident; no injuries. Report #: 2009-00268 Reported: 04/30/09 1049 Occurred: Same Incident: Traffic Crash

Boyce, Richard L.

151

2011 Daily Log Report #: 2011-00229  

E-Print Network (OSTI)

2011 Daily Log April 2011 Report #: 2011-00229 Reported: 04/29/2011 2327 Occurred: 04/29/2011 2325 Incident: Medical Emergency Location: University Center Disposition: Report--Closed Comments: Female transported by ambulance to hospital for medical treatment. Report #: 2011-00228 Reported: 04/29/2011 1702

Boyce, Richard L.

152

2010 Daily Log Report #: 2010-00262  

E-Print Network (OSTI)

2010 Daily Log June 2010 Report #: 2010-00262 Reported: 06/30/10 0957 Occurred: 06/24/10 1630 to 0957 Incident: Theft Location: Founders Hall Disposition: Report--Open Comments: Several textbooks stolen from office. No Reportable Activity on 06/29/10 Report #: 2010-00261 Reported: 06/28/10 1720

Boyce, Richard L.

153

2009 Daily Log Report #: 2009-00327  

E-Print Network (OSTI)

2009 Daily Log June 2009 Report #: 2009-00327 Reported: 06/30/09 1118 Occurred: Same Incident: Fire/Smoke Alarm Location: Dorm--Kentucky Hall Disposition: Report--Closed Comments: Alarm activation caused by drywall dust from contractors; fire department responded and cleared the scene. No Reportable Activity

Boyce, Richard L.

154

2011 Daily Log Report #: 2011-00261  

E-Print Network (OSTI)

2011 Daily Log May 2011 Report #: 2011-00261 Reported: 05/31/2011 1300 Occurred: Same Incident: Medical Emergency Location: University Center Disposition: Report--Closed Comments: Male transported to hospital by ambulance for evaluation and treatment. No Reportable Activity on 05/30/2011 No Reportable

Boyce, Richard L.

155

2011 Daily Log Report #: 2011-00295  

E-Print Network (OSTI)

2011 Daily Log June 2011 Report #: 2011-00295 Reported: 6/30/2011 0813 Occurred: 6/29/2011 1430 Incident: Traffic Crash Location: Sidewalk on Plaza Level Disposition: Report--Closed Comments: Single vehicle accident; no injuries. Report #: 2011-00294 Reported: 06/29/2011 1909 Occurred: Same Incident

Boyce, Richard L.

156

2010 Daily Log Report #: 2010-00221  

E-Print Network (OSTI)

2010 Daily Log April 2010 Report #: 2010-00221 Reported: 04/30/10 1034 Occurred: Same Incident: Found/Recovered Property Location: Founders Hall Disposition: Report--Closed Comments: Small purse was found in classroom. Report #: 2010-00220 Reported: 04/30/10 1347 Occurred: 04/30/10 0820 to 0900

Boyce, Richard L.

157

2011 Daily Log Report #: 2011-00317  

E-Print Network (OSTI)

2011 Daily Log July 2011 Report #: 2011-00317 Reported: 07/30/2011 1446 Occurred: 07/30/2011 1435 Incident: Odor Related Complaint Location: Power Plant Disposition: Report--Closed Comments: Subject reported a strange odor emanating from somewhere in the vicinity; fire department responded and cleared

Boyce, Richard L.

158

Navjot's nightmare revisited: logging, agriculture, and biodiversity  

E-Print Network (OSTI)

forests. Conversely, conversion of primary or logged forests to plantation crops, such as oil palm, causes the biodiversity of this region. Our analysis also suggests that, because South- east Asian forests are tightly and replaced with a nonforest landcover (e.g., agriculture including oil palm and rubber, timber plantations

Vermont, University of

159

Monthly Tank Inspection Log Name of Campus  

E-Print Network (OSTI)

Monthly Tank Inspection Log Name of Campus Street Address of Campus City, State, and Zip Code of Campus 1 of 2 1. Facility PBS Registration Number 6. DISTRIBUTE TO : 2. Tank Number 3. Tank Registered(S) Satisfactory Repair or Adjustment Required Not Applicable Additional Comments Attached ABOVEGROUND STORAGE TANK

Rosen, Jay

160

Gamma-Ray Logging Workshop (February 1981)  

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

Borehole logging methods for exploration Borehole logging methods for exploration and evaluation o f uranium deposits . Philip H. O d d , Robert F. Bmullad and Carl P. Lathan rej~rinkttl fnlm Mining and Groundwater Geophysiall967 Borehole logging methods for exploration and evaluation of uranium deposits Philip H. Dodd, Robert F. Droullard and Carl P. Lathan US. Atomic Energy Commhwn GmrPd Jtinct&n, Colorado Abstract, M o l e 1 - i s thc geophysical methad mast exten&@ w r t i n the Udtrrd States for exploratio~ md edwtim of wanhi &pod&. dammow lop, C o r n r n d j suppkrnentd with a singbz-pobt msfstailee log, m t l y supply about 80 percent of the bask data for om regerve c W t i o R a d mu& of the w ~ k r 6 . p ~ &ngk inf~nnatio~ Tmck-mounted 'rotmy eqnipmcnt i s EMhmody emphy&& holes usually hwre a nominai b

Note: This page contains sample records for the topic "techniques acoustic logs" 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

3D acoustic imaging applied to the Baikal Neutrino Telescope  

E-Print Network (OSTI)

A hydro-acoustic imaging system was tested in a pilot study on distant localization of elements of the Baikal underwater neutrino telescope. For this innovative approach, based on broad band acoustic echo signals and strictly avoiding any active acoustic elements on the telescope, the imaging system was temporarily installed just below the ice surface, while the telescope stayed in its standard position at 1100 m depth. The system comprised an antenna with four acoustic projectors positioned at the corners of a 50 meter square; acoustic pulses were "linear sweep-spread signals" - multiple-modulated wide-band signals (10-22 kHz) of 51.2 s duration. Three large objects (two string buoys and the central electronics module) were localized by the 3D acoustic imaging, with a accuracy of ~0.2 m (along the beam) and ~1.0 m (transverse). We discuss signal forms and parameters necessary for improved 3D acoustic imaging of the telescope, and suggest a layout of a possible stationary bottom based 3D imaging setup. The presented technique may be of interest for neutrino telescopes of km3-scale and beyond, as a flexible temporary or as a stationary tool to localize basic telescope elements, while these are completely passive.

K. G. Kebkal; R. Bannasch; O. G. Kebkal; A. I. Panfilov; R. Wischnewski

2008-11-07T23:59:59.000Z

162

Energy Efficiency in Log Homes | Department of Energy  

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

Energy Efficiency in Log Homes Energy Efficiency in Log Homes Energy Efficiency in Log Homes April 13, 2012 - 11:29am Addthis Consider energy efficiency when designing or purchasing a log home. | Photo courtesy of ©iStockphoto.com/tinabelle Consider energy efficiency when designing or purchasing a log home. | Photo courtesy of ©iStockphoto.com/tinabelle What does this mean for me? Before designing or purchasing a log home, you should consider several factors related to energy efficiency. Log homes may be site-built or pre-cut in a factory for delivery to the site. Some log home manufacturers can also customize their designs. Before designing or purchasing a manufactured log home, you should consider several factors related to energy efficiency. The R-Value of Wood A material's thermal resistance or resistance to heat flow is measured by

163

Energy Efficiency in Log Homes | Department of Energy  

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

Energy Efficiency in Log Homes Energy Efficiency in Log Homes Energy Efficiency in Log Homes April 13, 2012 - 11:29am Addthis Consider energy efficiency when designing or purchasing a log home. | Photo courtesy of ©iStockphoto.com/tinabelle Consider energy efficiency when designing or purchasing a log home. | Photo courtesy of ©iStockphoto.com/tinabelle What does this mean for me? Before designing or purchasing a log home, you should consider several factors related to energy efficiency. Log homes may be site-built or pre-cut in a factory for delivery to the site. Some log home manufacturers can also customize their designs. Before designing or purchasing a manufactured log home, you should consider several factors related to energy efficiency. The R-Value of Wood A material's thermal resistance or resistance to heat flow is measured by

164

Measurement of the Q value of an acoustic resonator  

Science Journals Connector (OSTI)

A cylindrical acoustic resonator was externally driven at the first resonance frequency by a compression driver. The acoustic energy stored in the resonator and the power dissipated per unit time were evaluated through the simultaneous measurements of acoustic pressure and velocity, in order to determine the Q value of the resonator. The resulting Q value, being employed as a measure of the damping in a resonator, was obtained as 36. However, the Q value determined from a frequency response curve known as a conventional technique turned out to be 25, which is 30% less than that obtained in the present method. By further applying these two methods in the case of a resonator having an acoustic load inside, we present an accurate measurement of the Q value of the resonator by making full use of its definition.

Tetsushi Biwa; Yuki Ueda; Hiroshi Nomura; Uichiro Mizutani; Taichi Yazaki

2005-08-01T23:59:59.000Z

165

E-Print Network 3.0 - acoustic drillhole logging Sample Search...  

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

at Berkeley Collection: Geosciences 7 CANADIAN GEOTECHNICAL CONFERENCE JOINT IAH-CNCCGS CONFERENCE Summary: , 1993). The stratigraphic correlations available at drillholes...

166

Velocity determination from multireceiver full-waveform acoustic-logging data  

E-Print Network (OSTI)

shown that the MLM estimator behaves such that for each value ol' S, the spatial window is designed to suppress optimally (in a least squares sense) all arrivals with a moveout other than the window moveout (S). It has been shown by Cox (1973...) that the MLM method provides better resolution than the conventional beamformer. However, under conditions of mismatch, where the moveout of the signals is different from the moveout of the windows, its performance can degrade to below...

Ramanlal, Kirti Kumar

2012-06-07T23:59:59.000Z

167

The importance of a small wall deformation in the three-dimensional acoustic logging results  

Science Journals Connector (OSTI)

......needs to be sufficiently large to avoid spatial contamination...cylindrical fluid-filled borehole subjected to spatially...circular borehole to a borehole with a small localized...when the fluid-filled borehole is excited at higher...formations altered by drilling, Geophysics, 53......

Lus Godinho; Antnio Tadeu

2002-11-01T23:59:59.000Z

168

Microsoft Word - FOIA Log FY 2001.doc  

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

1 FOIA - Request Log 1 FOIA - Request Log 1 Closed/ Date No. Dated Date Rec'd HQ or Dir. Subject Yes/ 3/29/01 001 02/01/01 02/01/01 01-0021C Transfer AL Copies of all documents including studies and memoranda, which may identify or consider WIPP site in Carlsbad, NM as a potential site for storage or disposal of spent reactor fuel or high-level radioactive wastes 2. All documents including studies, memoranda, hypothesizing, considering, recommending, or suggesting the WIPP site in NM as an alternative site to the Yucca Mountain site in NV. 3. All documents or lists setting forth the alternative sites that may potential be considered by DOE if the Yucca Mountain site is for any reason not selected to be the DOE site receiving high level radioactive waste or spent reactor fuel. If alternative potential sites have

169

Microsoft Word - FOIA Log FY 2002.doc  

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

FOIA - Request Log FOIA - Request Log 1 Closed/ Date No. Dated Date Rec'd HQ or Dir. Subject Yes/ 1/30/02 001 12/3/02 12/21/02 Richland Transfer Richland Operation Office search for records they located documents originated by the DOE Carlsbad Field Office that may be responsive to Mr. Hongs request. By transfer of this letter they forwarded Mr. Hong request, along with the documents located at Richland to the Carlsbad FOIA Office. CBFO will respond directly to Mr. Hong with a release determination Yes/ 2/13/02 002 1/30/02 1/30/02 Direct Description of request: answers to 1) What is the makeup of the additional 2 MT now bound for WIPP? What sites will come from, in what quantities, and in what form? 2) What type of NEPA documentation will DOE conduct on this additional 2 MT? (Note: Disposal of this material

170

Microsoft Word - FOIA Log FY 2003.doc  

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

3 FOIA - Request Log 3 FOIA - Request Log 1 Closed/ Date No. Dated Date Rec'd HQ or Dir. Subject Yes/ 11/03/03 001 12/16/02 1/7/03 Transfer from HQ Documentation provided identifying all Waste Isolation Pilot Plant contractors and their sub- contractors, as well as the principals for those entities. Yes 2/20/04 002 12/16/02 1/7/03 Transfer from HQ Documentation provided concerning the following Waste Isolation Pilot Plant related items: 1) Notify as to whether any portion of Westinghouse TRU Solutions work has been outsourced or privatized, and identify the outsource contact affected employees, 2) Notify as to whether environmental work done by Westinghouse TRU Solutions has undergone any changes involving position within company structure, management personnel, addition or deletions to scope of

171

Sensitivity of an underwater acoustic array to ultra-high energy neutrinos  

E-Print Network (OSTI)

the maximum energy of protons of cos- mological origin somewhere below 1020 eV, be- cause of the finite (%50Sensitivity of an underwater acoustic array to ultra-high energy neutrinos Nikolai G. Lehtinen the possibility of searching for ultra high energy neutrinos in cosmic rays using acoustic techniques in ocean

Buckingham, Michael

172

Determination of capillary displacement pressure and representative average capillary pressure vs. depth in shally sandstones from well logs  

SciTech Connect

This research presents a method whereby the capillary displacement pressure Pcd and the representative average capillary pressure in shaly sandstone reservoirs exhibits continuous information vs. depth from well logs. By the aid of special core analysis, correlation functions were obtained that relate the capillary characteristics of the reservoir rock to its lithologic development. Since the lithologic influence factor is a well log-derived parameter the correlations then were used to determine by means of well logs the capillary displacement and average capillary pressures for borehole sections where special core analysis is not available. This technique has been developed and applied to the shaly sandstone reservoir of the Sarir oil field in Libya.

Barlai, Z.; Berruin, N.A.; Mawla, R.A.

1981-01-01T23:59:59.000Z

173

Well Log Data At Blue Mountain Geothermal Area (Fairbank & Niggemann...  

Open Energy Info (EERE)

well Deep Blue No. 1. Notes Well log data was collected in Deep Blue No. 1 upon its completion. The logging was conducted by Welaco Well Analysis Corporation. Temperature,...

174

Modern Schoolroom Acoustics  

Science Journals Connector (OSTI)

Many teachers are faced with conducting classes in buildings that were obsolete thirty years ago. Others are or soon will be teaching in new schools which are in no way modern in some of their basic construction details. A classroom laboratory or auditorium is fundamentally a shelter in which the basic functions are seeing and hearing. Daylight provides satisfactory seeing a large part of the time. In spite of this about $1.50 per square foot is the average investment for auxiliary lighting while satisfactory acoustics is often completely overlooked or is the target of severe economy measures. Architects today are often eliminating or seriously compromising on the acoustical treatment expenditure while spending lavishly for less important materials. Eighty?five percent articulation will usually result in satisfactory hearing for adults because the context supplies the transitional ties. For children however especially the very young each word and every syllable is important. Excessive reverberation time or poor sound distribution may create conditions which seriously handicap the students and teachers alike. Modern medical methods have shown that poor eyes and poor hearing are often responsible for backward children who are really average or above average in mental ability. It is inexcusable to add to their natural handicaps those of poor architecture and poor engineering. Good acoustics is as fundamental as lighting and ventilation and much more attention should be paid to this phase of school design.

L. F. Yerges; M. A. Smith

1949-01-01T23:59:59.000Z

175

Cylindrical Acoustic Levitator/Concentrator  

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

Cylindrical Acoustic Levitator/Concentrator Cylindrical Acoustic Levitator/Concentrator Cylindrical Acoustic Levitator/Concentrator A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. Available for thumbnail of Feynman Center (505) 665-9090 Email Cylindrical Acoustic Levitator/Concentrator A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially available, hollow cylindrical piezoelectric crystal which has been modified to tune the resonance frequency of the breathing mode resonance of the crystal to that

176

Resistivity Log At Alum Area (Moos & Ronne, 2010) | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Resistivity Log At Alum Area (Moos & Ronne, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Alum Geothermal Area (Moos & Ronne, 2010) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness useful DOE-funding Unknown Notes Density and electrical resistivity data were important to calibrate structural models based on surface surveys. Fluid flow appeared to be concentrated beneath the detachment within an interval in which some mud losses occurred while drilling, and shallow-reading resistivity logs recorded much lower values than deeper-reading logs suggesting that

177

Upland Log Volumes and Conifer Establishment Patterns in Two Northern,  

E-Print Network (OSTI)

conifer recruit densities on these logs and on the surrounding forest floor. We report significantly greater conifer recruit densities on log substrates as compared to the forest floor. Log substrate, height class and substrate for each established individual. Conifer recruit densities on the forest floor

Standiford, Richard B.

178

Using search logs to recommend images to new users  

Science Journals Connector (OSTI)

We make use of search logs provided by the Belga News Agency to recommend images downloaded by previous users to new users. Each search session in the logs consists of a session ID number, the ID of the images which were downloaded at the conclusion ... Keywords: TF.IDF, cosine similarity coefficient, recommendation, relevance feedback, search engines, search logs, still images

Yan Xu; Michael Oakes

2009-09-01T23:59:59.000Z

179

Acoustic emission during polymer crystallization  

Science Journals Connector (OSTI)

... .G.; part support to L.K.) Acoustic Emission, Special Technical Publication 505, ASTM, Philadelphia, 1971; Grabec, I. & Peterlin, A. J. Polymer Sci. ...

A. Galeski; L. Koenczoel; E. Piorkowska; E. Baer

1987-01-01T23:59:59.000Z

180

An overview of acoustic?structural interactions: Vibration and acoustic radiation  

Science Journals Connector (OSTI)

The structural vibration and the resulting acoustic radiation is a fully decoupled problem in a gas and a fully coupled problem in a fluid. The fluid?structure interaction problem encompasses a broad spectrum of areas of interest in engineering applications. This ranges from mechanically existed structures (acoustic radiation) to acoustically induced vibrations (elasticscattering) to hydrodynamically applied forces (flow noise). The coupled fluid?structure interaction for each of these problems is essentially the same; the difference lies in the manner utilized in applying the prescribed forcing function to the structure in satisfying the interfaceboundary condition and in analyzing the radiated acoustic field. The common link relating these problems is the fact that the same governing equations for the fluid and the structure are applicable in each of these areas. This commonality between the diverse fluid?structure interactions will be stressed. The different techniques being used to solve the problems for each of the three types of problems will be presented and a brief review of the state of the art will be given.

Mauro Pierucci

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Well log evaluation of natural gas hydrates  

SciTech Connect

Gas hydrates are crystalline substances composed of water and gas, in which a solid-water-lattice accommodates gas molecules in a cage-like structure. Gas hydrates are globally widespread in permafrost regions and beneath the sea in sediment of outer continental margins. While methane, propane, and other gases can be included in the clathrate structure, methane hydrates appear to be the most common in nature. The amount of methane sequestered in gas hydrates is probably enormous, but estimates are speculative and range over three orders of magnitude from about 100,000 to 270,000,000 trillion cubic feet. The amount of gas in the hydrate reservoirs of the world greedy exceeds the volume of known conventional gas reserves. Gas hydrates also represent a significant drilling and production hazard. A fundamental question linking gas hydrate resource and hazard issues is: What is the volume of gas hydrates and included gas within a given gas hydrate occurrence? Most published gas hydrate resource estimates have, of necessity, been made by broad extrapolation of only general knowledge of local geologic conditions. Gas volumes that may be attributed to gas hydrates are dependent on a number of reservoir parameters, including the areal extent ofthe gas-hydrate occurrence, reservoir thickness, hydrate number, reservoir porosity, and the degree of gas-hydrate saturation. Two of the most difficult reservoir parameters to determine are porosity and degreeof gas hydrate saturation. Well logs often serve as a source of porosity and hydrocarbon saturation data; however, well-log calculations within gas-hydrate-bearing intervals are subject to error. The primary reason for this difficulty is the lack of quantitative laboratory and field studies. The primary purpose of this paper is to review the response of well logs to the presence of gas hydrates.

Collett, T.S.

1992-10-01T23:59:59.000Z

182

Well log evaluation of natural gas hydrates  

SciTech Connect

Gas hydrates are crystalline substances composed of water and gas, in which a solid-water-lattice accommodates gas molecules in a cage-like structure. Gas hydrates are globally widespread in permafrost regions and beneath the sea in sediment of outer continental margins. While methane, propane, and other gases can be included in the clathrate structure, methane hydrates appear to be the most common in nature. The amount of methane sequestered in gas hydrates is probably enormous, but estimates are speculative and range over three orders of magnitude from about 100,000 to 270,000,000 trillion cubic feet. The amount of gas in the hydrate reservoirs of the world greedy exceeds the volume of known conventional gas reserves. Gas hydrates also represent a significant drilling and production hazard. A fundamental question linking gas hydrate resource and hazard issues is: What is the volume of gas hydrates and included gas within a given gas hydrate occurrence Most published gas hydrate resource estimates have, of necessity, been made by broad extrapolation of only general knowledge of local geologic conditions. Gas volumes that may be attributed to gas hydrates are dependent on a number of reservoir parameters, including the areal extent ofthe gas-hydrate occurrence, reservoir thickness, hydrate number, reservoir porosity, and the degree of gas-hydrate saturation. Two of the most difficult reservoir parameters to determine are porosity and degreeof gas hydrate saturation. Well logs often serve as a source of porosity and hydrocarbon saturation data; however, well-log calculations within gas-hydrate-bearing intervals are subject to error. The primary reason for this difficulty is the lack of quantitative laboratory and field studies. The primary purpose of this paper is to review the response of well logs to the presence of gas hydrates.

Collett, T.S.

1992-10-01T23:59:59.000Z

183

A Full Field Inversion Method for Acoustic Tomography of Ocean Currents  

Science Journals Connector (OSTI)

An extension of the matched field inversion technique to include oceanic current tomography is considered. Matching of the non-reciprocity of acoustic fields propagated in opposite directions (instead of match...

O. A. Godin; D. Yu. Mikhin; A. V. Mokhov

1995-01-01T23:59:59.000Z

184

K-distribution fading models for Bayesian estimation of an underwater acoustic channel  

E-Print Network (OSTI)

Current underwater acoustic channel estimation techniques generally apply linear MMSE estimation. This approach is optimal in a mean square error sense under the assumption that the impulse response fluctuations are well ...

Laferriere, Alison Beth

2011-01-01T23:59:59.000Z

185

Frequency Response of Acoustic-Assisted NiMnGa Ferromagnetic- Shape-Memory-Alloy Actuator  

E-Print Network (OSTI)

A prototype of NiMnGa based ferromagnetic-shape-memory-alloy (FSMA) actuator was designed and built; an acoustic-assist technique was applied to the actuator to enhance its performance. A piezoelectric stack actuator was ...

Techapiesancharoenkij, Ratchatee

186

Formation Micro-Imager Logs (FMI) | Open Energy Information  

Open Energy Info (EERE)

Formation Micro-Imager Logs (FMI) Formation Micro-Imager Logs (FMI) Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Formation Micro-Imager Logs (FMI) Author Shakeel Ahmed Published Publisher Not Provided, 2013 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Formation Micro-Imager Logs (FMI) Citation Shakeel Ahmed. Formation Micro-Imager Logs (FMI) [Internet]. 2013. [cited 2013/10/09]. Available from: http://petphy.blogspot.com/2011/12/formation-micro-imager-logs-fmi.html Retrieved from "http://en.openei.org/w/index.php?title=Formation_Micro-Imager_Logs_(FMI)&oldid=687994" Categories: References Geothermal References Uncited References What links here Related changes Special pages Printable version Permanent link Browse properties

187

NONLINEAR ACOUSTIC IMAGING OF STRUCTURAL DAMAGES IN LAMINATED COMPOSITES  

E-Print Network (OSTI)

NONLINEAR ACOUSTIC IMAGING OF STRUCTURAL DAMAGES IN LAMINATED COMPOSITES L. Pieczonka1 , A. Klepka1 for imaging of structural damage in a laminated composite plate. The techniques that have been considered are performed on a carbon fiber/epoxy laminated composite plate with barely visible impact damage

Boyer, Edmond

188

Microsoft Word - FOIA Log FY 2007.doc  

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

7 FOIA - Request Log 7 FOIA - Request Log 1 Closed/ Date No. Dated Date Rec'd HQ or Dir. Subject Finalized 02/08/07 001 10/05/06 01/08/07 Transfer from DOE- EM-CBC Copies of contract modifications, performance evaluations, task orders and task order proposals related to contract AT30-05EW03000 with Navarro Research and Engineering, Inc. Finalized 01/31/07 002 01/11/07 01/11/07 Direct For a copy of contract DE-AC04-95AL89446 for the period of September 1995 through the end of the contract. Also, if not included in the above, a copy of the special provisions for the contract specifying the role of the CTAC Program Manager as the single point of contact with DOE. Finalized 02/06/07 003 01/31/07 02/05/07 Transfer from DOE/HQ Copies of the U.S. Department of Energy's ten oldest open or pending Freedom of

189

Microsoft Word - FOIA Log FY 2005.doc  

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

5 FOIA - Request Log 5 FOIA - Request Log 1 Closed/ Date No. Dated Date Rec'd HQ or Dir. Subject Yes 02/23/05 001 02/16/05 02/16/05 Direct Copies of the 2004 Modifications to the Westinghouse TRU Solutions contract (No. DE-AC- 04-01AL66444) for the management and operation of the Waste Isolation Pilot Plant. Yes 04/12/05 002 04/11/05 04/11/05 Direct Copies of the scope of work statement for the EE&G Oversight contract for the Waste Isolation Pilot Plant, dated 1999 or 2000 Yes 04/29/05 003 04/20/05 04/20/05 Direct (1) A copy of the Winning Proposal for RFP No. DE-AC04-89AL58309 (A036), entitled Environmental Evaluation Group (EEG) Oversight Contract for the Waste Isolation Pilot Plant. Subject RFO was issued in FY 2001, and we believe the initials contract was awarded to a company named EG&G.

190

Dewarless Logging Tool - 1st Generation  

SciTech Connect

This report focuses on Sandia National Laboratories' effort to create high-temperature logging tools for geothermal applications without the need for heat shielding. One of the mechanisms for failure in conventional downhole tools is temperature. They can only survive a limited number of hours in high temperature environments. For the first time since the evolution of integrated circuits, components are now commercially available that are qualified to 225 C with many continuing to work up to 300 C. These components are primarily based on Silicon-On-Insulator (SOI) technology. Sandia has developed and tested a simple data logger based on this technology that operates up to 300 C with a few limiting components operating to only 250 C without thermal protection. An actual well log to 240 C without shielding is discussed. The first prototype high-temperature tool measures pressure and temperature using a wire-line for power and communication. The tool is based around the HT83C51 microcontroller. A brief discussion of the background and status of the High Temperature Instrumentation program at Sandia, objectives, data logger development, and future project plans are given.

HENFLING,JOSEPH A.; NORMANN,RANDY A.

2000-08-01T23:59:59.000Z

191

Raising Photoemission Efficiency with Surface Acoustic Waves  

SciTech Connect

We are developing a novel technique that may help increase the efficiency and reduce costs of photoelectron sources used at electron accelerators. The technique is based on the use of Surface Acoustic Waves (SAW) in piezoelectric materials, such as GaAs, that are commonly used as photocathodes. Piezoelectric fields produced by the traveling SAW spatially separate electrons and holes, reducing their probability of recombination, thereby enhancing the photoemission quantum efficiency of the photocathode. Additional advantages could be increased polarization provided by the enhanced mobility of charge carriers that can be controlled by the SAW and the ionization of optically-generated excitons resulting in the creation of additional electron-hole pairs. It is expected that these novel features will reduce the cost of accelerator operation. A theoretical model for photoemission in the presence of SAW has been developed, and experimental tests of the technique are underway.

A. Afanasev, F. Hassani, C.E. Korman, V.G. Dudnikov, R.P. Johnson, M. Poelker, K.E.L. Surles-Law

2012-07-01T23:59:59.000Z

192

Acoustically invisible feeding blue whales in Northern Icelandic waters  

Science Journals Connector (OSTI)

Fixed passive acoustic monitoring can be used for long-term recording of vocalizing cetaceans. Both presence monitoring and animal density estimation requires the call rates and sound source levels of vocalizations produced by single animals. In this study blue whale calls were recorded using acoustic bio-logging systems in Skjlfandi Bay off Hsavk Northeast Iceland in June 2012. An accelerometer was attached to individual whales to monitor diving behavior. During 21?h recording two individuals 8?h 45?min and 13?h 2?min respectively 105 and 104 lunge feeding events and four calls were recorded. All recorded calls were down-sweep calls ranging from 105 to 48?Hz. The sound duration was 12?s. The source level was estimated to be between 158 and 169?dB re 1?Pa rms assuming spherical sound propagation from the possible sound source location to the tag. The observed sound production rates and source levels of individual blue whales during feeding were extremely small compared with those observed previously in breeding grounds. The feeding whales were nearly acoustically invisible. The function of calls during feeding remains unknown.

Tomonari Akamatsu

2014-01-01T23:59:59.000Z

193

Acoustic imaging in a water filled metallic pipe  

SciTech Connect

A method is described for the imaging of the interior of a water filled metallic pipe using acoustical techniques. The apparatus consists of an array of 20 acoustic transducers mounted circumferentially around the pipe. Each transducer is pulsed in sequence, and the echos resulting from bubbles in the interior are digitized and processed by a computer to generate an image. The electronic control and digitizing system and the software processing of the echo signals are described. The performance of the apparatus is illustrated by the imaging of simulated bubbles consisting of thin walled glass spheres suspended in the pipe.

Kolbe, W.F.; Turko, B.T.; Leskovar, B.

1984-04-01T23:59:59.000Z

194

Green Energy Resources Inc formerly New York International Log Lumber  

Open Energy Info (EERE)

New York International Log Lumber New York International Log Lumber Company Jump to: navigation, search Name Green Energy Resources Inc (formerly New York International Log & Lumber Company) Place San Antonio, Texas Product GRGR aims to export wood fiber fuel, that is environmentally certified, to overseas power generation utilities. References Green Energy Resources Inc (formerly New York International Log & Lumber Company)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Green Energy Resources Inc (formerly New York International Log & Lumber Company) is a company located in San Antonio, Texas . References ↑ "Green Energy Resources Inc (formerly New York International Log & Lumber Company)"

195

Micro-Conductivity Imager Logging Tool | Open Energy Information  

Open Energy Info (EERE)

Micro-Conductivity Imager Logging Tool Micro-Conductivity Imager Logging Tool Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Micro-Conductivity Imager Logging Tool Author Hemisphere Technologies Published Publisher Not Provided, 2011 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Micro-Conductivity Imager Logging Tool Citation Hemisphere Technologies. Micro-Conductivity Imager Logging Tool [Internet]. 2011. [cited 2013/10/09]. Available from: http://www.hemisphereoil.com/mcit.html Retrieved from "http://en.openei.org/w/index.php?title=Micro-Conductivity_Imager_Logging_Tool&oldid=687995" Categories: References Geothermal References Uncited References What links here Related changes Special pages Printable version Permanent link

196

Western tight gas sands advanced logging workshop proceedings  

SciTech Connect

An advanced logging research program is one major aspect of the Western Tight Sands Program. Purpose of this workshop is to help BETC define critical logging needs for tight gas sands and to allow free interchange of ideas on all aspects of the current logging research program. Sixteen papers and abstracts are included together with discussions. Separate abstracts have been prepared for the 12 papers. (DLC)

Jennings, J B; Carroll, Jr, H B [eds.

1982-04-01T23:59:59.000Z

197

Microsoft Word - Acoustic Sensor for Pipeline Monitoring_Revised.do  

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

LA-UR-05-6025 LA-UR-05-6025 Approved for public release; distribution is unlimited. Title: Acoustic Sensor for Pipeline Monitoring: Technology Report Author(s): Dipen N. Sinha Submitted to: Gas Technology Management Division Strategic Center for Natural Gas and Oil National Energy Technology Laboratory 2 Acoustic Sensor for Pipeline Monitoring: Technology Report Dipen Sinha Los Alamos National Laboratory July 20, 2005 Executive Summary This report presents detailed information on the effort to develop acoustic sensing technologies for natural gas pipe line monitoring. It starts with a historical evolution of the project and ends with the current status. The various technical accomplishments during this effort are pointed out. The latest technique involves the use of Lamb wave propagation in the wall of a pipe generated in a stand-off manner for defect detection. The report presents

198

Applications of photoacoustic sensing techniques  

Science Journals Connector (OSTI)

This paper reviews the theory and applications of photoacoustic (also called optoacoustic) methods belonging to the more general area of photothermal measurement techniques. The theory covers excitation of gaseous or condensed samples with modulated continuous light beams or pulsed light beams. The applications of photoacoustic methods include spectroscopy, monitoring deexcitation processes, probing physical properties of materials, and generating mechanical motions. Several other related photothermal methods, as well as particle-acoustics and wave-acoustics methods are also described. This review complements an earlier and narrower review [Rev. Mod. Phys. 53, 517 (1981)] that is mainly concerned with sensitive detection by pulsed photoacoustic spectroscopy in condensed matter.

Andrew C. Tam

1986-04-01T23:59:59.000Z

199

Induction log analysis of thinly laminated sand/shale formation  

SciTech Connect

The author examines induction log responses to a thinly laminated sand/shale sequence in a deviated borehole for arbitrary deviation (or dip) angle and sand/shale composition. He found that the induction log responses in a thinly laminated sand/shale sequence are the same as they would be if the tool is placed in a homogeneous but anisotropic formation with the horizontal and vertical conductivities given respectively by the parallel and the series conductivities of the sequence. Conversely, a thinly laminated sand/shale sequence can be identified as an anisotropic formation by induction logs. He discusses three methods to identify an anisotropic formation using induction-type logs alone.

Hagiwara, T. [Shell Development Co., Houston, TX (United States)

1995-06-01T23:59:59.000Z

200

Pressure Temperature Log At Fish Lake Valley Area (DOE GTP) ...  

Open Energy Info (EERE)

Fish Lake Valley Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Fish Lake Valley Area (DOE GTP)...

Note: This page contains sample records for the topic "techniques acoustic logs" 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

NMOCD - Form G-105 - Geothermal Resources Well Log | Open Energy...  

Open Energy Info (EERE)

Well Log Author State of New Mexico Energy and Minerals Department Published New Mexico Oil Conservation Division, 1978 DOI Not Provided Check for DOI availability: http:...

202

Evaluation of Emerging Technology for Geothermal Drilling and Logging Applications  

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

Evaluation of Emerging Technology for Geothermal Drilling and Logging Applications presentation at the April 2013 peer review meeting held in Denver, Colorado.

203

Geophysical logs from water wells in the Yakima area, Washington  

SciTech Connect

The logs include: natural gamma, gamma gamma, neutron neutron, neutron gamma, caliper, fluid temperature, fluid resistivity, wall resistivity, spontaneous potential, and flow meter.

Biggane, J.H.

1983-01-01T23:59:59.000Z

204

Well Log Data At North Brawley Geothermal Area (Matlick & Jayne...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Well Log Data At North Brawley Geothermal Area (Matlick & Jayne, 2008) Exploration Activity Details...

205

Pressure Temperature Log At Fort Bliss Area (DOE GTP) | Open...  

Open Energy Info (EERE)

Fort Bliss Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Fort Bliss Area (DOE GTP) Exploration...

206

Wireless technology and library acoustics  

Science Journals Connector (OSTI)

The modern library cannot function without modern technology. Printers copiers wireless computers and espresso machines all contribute to the soundscape of the typical municipal library (and many academic libraries too). While some of these noise sources are stationary and can be isolated acoustically wireless computing has transformed the acoustic experience for the typical library patron. Study carrels and desks used to define the boundaries of study and work areas in libraries and architects could design spaces accordingly. With wireless technology every space is a study space. This paper will discuss the implications of wireless technology on library acoustics. Measurement results at a variety of case study libraries will be presented.

2006-01-01T23:59:59.000Z

207

Measurement of Acoustic Impedance  

Science Journals Connector (OSTI)

The acoustic impedance of a sample of material forming one boundary of a shallow cylindrical cavity can be determined by measuring the sound pressure produced when a known volume current is injected into the cavity from a high impedance source. The volume current is effectively determined by observing the pressure when the cavity is terminated rigidly. An impedance determination is thus reduced to measurement of the complex ratio of two observed voltages. By designing a ring source to suppress the first radial mode of the cavity the upper frequency limit set by uniformity of pressure distribution is extended by at least an octave. By avoiding leaks measurements can also be extended to very low frequencies. Secondary effects due to finite source impedance viscosity and heat losses at the walls have been evaluated. The method appears to be simple rapid and precise.

O. K. El?Mawardi

1948-01-01T23:59:59.000Z

208

Acoustic detection of neutrinos  

Science Journals Connector (OSTI)

When high energy neutrinosinteract with nucleons in the ocean a jet of hadrons is produced which deposits thermal energy. This thermal energy is expected to produce a sonic pulse which hopefully will be sufficiently intense and directional to enable the energy and direction of incidence of the primary neutrino to be determined [Antares Parvulescu J. Acoust. Soc. Am. 61 580(A) (1977)]. This paper discusses the physical mechanism whereby the energy of the neutrino is converted into a sound pulse. A simple model will be exploited to account for the signature expected from such an event. [Work supported in part by the U. S. Naval Ocean Research and Development Activity and by the U. S. Department of Energy.

Peter J. Westervelt

1978-01-01T23:59:59.000Z

209

Acoustically invisible cylinder  

Science Journals Connector (OSTI)

Coatings of new type recently proposed by the author (Acoustical Physics 2007 vol. 53 N5 pp. 535?545) are applied to bodies of cylindrical geometry to reduce reflection or scattering of sound and thus to make them undetectable by imaging systems. Such a coating called as a coating with extended reaction represents a periodic set of small elements with coupling between the neighboring elements. Appropriate choice of the coupling parameters makes its efficiency much higher than that of commonly used coatings. In the present paper it is shown by computer simulation that a rather simple coating of this type can reduce the back?scattered pressure amplitude more than 40 dB (with respect to the rigid cylinder) practically at all frequencies. Considerable reduction of the scattered power can also be achieved in a low frequency range. The width of this range and the reduction index depend on the number of couplings introduced into the coating.

Yuri Bobrovnitskii

2008-01-01T23:59:59.000Z

210

Helioseismology in a bottle: modal acoustic velocimetry  

E-Print Network (OSTI)

Measurement of the differential rotation of the Sun's interior is one of the great achievements of helioseismology, providing important constraints for stellar physics. The technique relies on observing and analyzing rotationally-induced splittings of p-modes in the star. Here we demonstrate the first use of the technique in a laboratory setting. We apply it in a spherical cavity with a spinning central core (spherical-Couette flow) to determine the mean azimuthal velocity of the air filling the cavity. We excite a number of acoustic resonances (analogous to p-modes in the Sun) using a speaker and record the response with an array of small microphones on the outer sphere. Many observed acoustic modes show rotationally-induced splittings, which allow us to perform an inversion to determine the air's azimuthal velocity as a function of both radius and latitude. We validate the method by comparing the velocity field obtained through inversion against the velocity profile measured with a calibrated hot film anemo...

Triana, Santiago Andrs; Nataf, Henri-Claude; Thorette, Aurlien; Lekic, Vedran; Lathrop, Daniel P

2014-01-01T23:59:59.000Z

211

Experimental quiescent drifting dusty plasmas and temporal dust acoustic wave growth  

SciTech Connect

We report on dust acoustic wave growth rate measurements taken in a dc (anode glow) discharge plasma device. By introducing a mesh with a variable bias 12-17 cm from the anode, we developed a technique to produce a drifting dusty plasma. A secondary dust cloud, free of dust acoustic waves, was trapped adjacent to the anode side of the mesh. When the mesh was returned to its floating potential, the secondary cloud was released and streamed towards the anode and primary dust cloud, spontaneously exciting dust acoustic waves. The amplitude growth of the excited dust acoustic waves was measured directly along with the wavelength and Doppler shifted frequency. These measurements were compared to fluid and kinetic dust acoustic wave theories. As the wave growth saturated a transition from linear to nonlinear waves was observed. The merging of the secondary and primary dust clouds was also observed.

Heinrich, J. R.; Kim, S.-H.; Meyer, J. K.; Merlino, R. L. [Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 (United States)

2011-11-15T23:59:59.000Z

212

Acoustic Correlates of Information Structure.  

E-Print Network (OSTI)

This paper reports three studies aimed at addressing three questions about the acoustic correlates of information structure in English: (1) do speakers mark information structure prosodically, and, to the extent they do; ...

Breen, Mara

213

Drag reduction in coal log pipelines  

SciTech Connect

It is well-known that solutions of dissolved long-chain macromolecules produce lower friction or drag losses than with the solvent alone. In coal log pipeline (CLP), water is the conveying medium. Synthetic polymers such as poly(ethylene oxide) have been dissolved in water and tested for their extent of drag reduction as a function of concentration and other variables. Lab-scale experimental results for CLP indicate substantial drag reduction at low concentration levels of polymer. But, the macromolecules exhibit degradation under mechanical shear stresses. The large molecules break into smaller units. This degradation effect causes a loss of drag reduction. However, high levels of drag reduction can be maintained as follows: (1) by injecting polymer into the CLP at several locations along the pipeline, (2) by injecting polymer of different particle sizes, (3) by using more robust types of polymers, or (4) by using polymer-fiber mixtures. This report presents the value of drag-reducing agents in terms of pumping power net cost savings. In addition, this report outlines the environmental impact of drag reduction polymers, and end-of-pipeline water treatment processes. For an operating CLP, hundreds of miles in length, the use of poly(ethylene oxide) as a drag reducing agent provides significant pumping power cost savings at a minimal materials cost.

Marrero, T.R.; Liu, H. [Univ. of Missouri, Columbia, MO (United States). Capsule Pipeline Research Center

1996-12-31T23:59:59.000Z

214

Film Badge Application Radioactive Material Package Receipt Log  

E-Print Network (OSTI)

;RADIOACTIVE MATERIAL PACKAGE RECEIPT LOG DATE: DELIVERED BY: AUTHORIZED BY: Contamination Check DPM/100 cm2APPENDIX A Film Badge Application Radioactive Material Package Receipt Log Radioactive Material Package Receipt Form (Off-Campus Locations) Radiation / Contamination Survey Form #12;PERSONNEL MONITORING

Slatton, Clint

215

Synthetic logs generator for fraud detection in mobile transfer services  

E-Print Network (OSTI)

Synthetic logs generator for fraud detection in mobile transfer services Chrystel Gaber, Baptiste to commit crimes and avoid detection, research in the field of fraud is always evolving. However, trans synthetic logs with real ones. I. INTRODUCTION Frauds in the field of electronic payment evolve contin

Paris-Sud XI, Université de

216

High-voltage supply for neutron tubes in well-logging applications  

DOE Patents (OSTI)

A high voltage supply is provided for a neutron tube used in well logging. The biased pulse supply of the invention combines DC and full pulse techniques and produces a target voltage comprising a substantial negative DC bias component on which is superimposed a pulse whose negative peak provides the desired negative voltage level for the neutron tube. The target voltage is preferably generated using voltage doubling techniques and employing a voltage source which generates bipolar pulse pairs having an amplitude corresponding to the DC bias level.

Humphreys, D.R.

1982-09-15T23:59:59.000Z

217

Advanced research in instrumentation and control technology: Acoustic parameter studies  

SciTech Connect

In the process of developing acoustic/ultrasonic instruments for coal conversion and combustion processes, there is a need to understand various complex relations between acoustic parameters and physical properties of coal/gas and coal/liquid media so that the instrument readings and measurement accuracy can be evaluated and new sensing techniques can be developed. The primary objective of this project is to examine the theory and perform measurements of acoustic/ultrasonic parameters in such coal media. The acoustic parameters of interest are sound speed, attenuation, scattering pattern, and resonance scattering, which relate directly or indirectly to coal concentration, particle size and distribution, and rheological and thermal properties. In summary, we have developed a laboratory technique for accurate attenuation measurement in highly viscous liquids and coal slurries. For pure liquids, the attenuation in low frequency (0.8 to 2 MHz) provides a direct measurement of fluid shear viscosity. For coal slurries of low concentration (<10% by weight) attenuation in the same frequency range still follows the variation of fluid viscosity. But, for slurries of higher coal concentration, anomalous attenuation may be measured, depending on the fluid structure, which is believed to be a micor-inhomogeneous medium. 8 refs., 5 figs., 1 tab.

Sheen, S.H.; Bobis, J.P.; Raptis, A.C.

1986-01-01T23:59:59.000Z

218

Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation-  

Open Energy Info (EERE)

Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Details Activities (6) Areas (1) Regions (0) Abstract: This paper presents the results of analysis of a state of the art set of wireline petrophysical and wellbore image logs recorded in the Alum 25-29 well, southwestern Nevada. The Alum well penetrated nearly 2000 ft (610 m) of volcano-clastic rocks and more than 1000 ft of basement, separated from the sediments by a shallowly dipping detachment fault. The logs were acquired both to characterize the site and also to select the

219

Log Homes in REScheck | Building Energy Codes Program  

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

Log Homes in REScheck Log Homes in REScheck This training includes an introduction to how log homes are handled in the REScheck(tm) software and demonstrates how to show compliance for log homes using REScheck. Estimated Length: 56 minutes Presenters: Rob Picket, Log Homes Council Heather Dillon and Pam Cole, Pacific Northwest National Laboratory Original Webcast Date: Thursday, February 16, 2006 - 13:00 CEUs Offered: 1.0 AIA/CES LU (HSW); .10 CEUs towards ICC renewal certification. Course Type: Video Downloads: Presentation Slides Video Watch on YouTube Visit the BECP Online Training Center for instructions on how to obtain a certificate of completion. Building Type: Residential Focus: Compliance Code Version: International Energy Conservation Code (IECC) Software: REScheck Target Audience:

220

Reflective echo tomographic imaging using acoustic beams  

DOE Patents (OSTI)

An inspection system includes a plurality of acoustic beamformers, where each of the plurality of acoustic beamformers including a plurality of acoustic transmitter elements. The system also includes at least one controller configured for causing each of the plurality of acoustic beamformers to generate an acoustic beam directed to a point in a volume of interest during a first time. Based on a reflected wave intensity detected at a plurality of acoustic receiver elements, an image of the volume of interest can be generated.

Kisner, Roger; Santos-Villalobos, Hector J

2014-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Acoustic hemostasis: Underlying mechanisms  

Science Journals Connector (OSTI)

Cessation of hemorrhage using extrinsic interventional methods is possible with delivery of energy to bleeding tissues i.e. cauterization. High intensity focused ultrasound (HIFU) is one such method with significant advantages of delivering high levels of energy to well?defined regions of deep?seated tissues even during profuse bleeding. The physical mechanisms involved in this process include thermal and mechanical effects of HIFU leading to various biological effects. Our results using HIFU devices of 15 MHz and focal derated intensities of 1 00010 000 W/cm2 in solid organs such as liver spleen and kidneys and major and minor blood vessels show that temperature of targeted tissues reaches 70100C within seconds with formation of microbubbles approximately 5??200 ? in size and concentration of 100 bubbles/mm3. It appears that boiling of interstitial fluids and blood and acoustic cavitation are both involved. The biological effects include coagulative necrosis mechanical disruption of tissue structure potentially leading to release of tissue factors enhancing the coagulation coagulum and thrombus formation at a wound site tissue fusion via collagen and elastin remodeling and fibrin plug formation with minimal damage of the surrounding tissues. These mechanisms appear to provide an effective and safe method of hemorrhage control. [Work supported by NIH DoD NSBRI.

Shahram Vaezy; Lawrence Crum; Steve Carter; Grant OKeefe; Vesna Zderic; Roy Martin; Riyad Karmy?Jones

2007-01-01T23:59:59.000Z

222

Modeling acoustic backscatter from the seafloor by long-range side-scan sonar  

E-Print Network (OSTI)

of the various scattering mechanisms in seafloor sediment are not well understood. Such an understanding is essential for developing acoustic remote sensing techniques and for constructing predictive models for bottom backscattering. Backscatter measurements... [1989]). These efforts have included several theoretical approaches. There are two well-known theoretical methods for calculating acoustic scattering from rough surfaces. One is based on the small roughness perturbation approximation [ Thorsos...

Lyons, Anthony Patrick

2012-06-07T23:59:59.000Z

223

In-process acoustic emission monitoring of dissimilar metal welding: Final report  

SciTech Connect

A system to provide real-time, in-process acoustic emission monitoring to detect and locate flaws in bimetallic welds has been demonstrated. This system could provide reliable inspection of critical welds in cases where conventional NDE would be costly or impossible to apply. Tests were completed on four sample welds to determine the sensitivity of the system. Artificial flaws were introduced into two test samples and the acoustic emission results were verified by radiography and visual inspection techniques.

Not Available

1989-08-01T23:59:59.000Z

224

Nonplanar ion-acoustic solitary waves with superthermal electrons in warm plasma  

SciTech Connect

In this paper, we consider an unmagnetized plasma consisting of warm adiabatic ions, superthermal electrons, and thermal positrons. Nonlinear cylindrical and spherical modified Korteweg-de Vries (KdV) equations are derived for ion acoustic waves by using reductive perturbation technique. It is observed that an increasing positron concentration decreases the amplitude of the waves. Furthermore, the effects of the superthermal parameter (k) on the ion acoustic waves are found.

Eslami, Parvin [Department of Physics, Ferdowsi University of Mashhad (Iran, Islamic Republic of); Mottaghizadeh, Marzieh [Department of Physics, Mashhad Branch, Islamic Azad University, Mashhad (Iran, Islamic Republic of); Pakzad, Hamid Reza [Department of Physics, Bojnourd Branch, Islamic Azad University, Bojnourd (Iran, Islamic Republic of)

2011-07-15T23:59:59.000Z

225

Pressure Temperature Log At Steamboat Springs Area (Combs, Et Al., 1999) |  

Open Energy Info (EERE)

Steamboat Springs Area (Combs, Et Al., 1999) Steamboat Springs Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Steamboat Springs Area (Combs, Et Al., 1999) Exploration Activity Details Location Steamboat Springs Area Exploration Technique Pressure Temperature Log Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Downhole data during production and injection tests were acquired using pressure/temperature/spinner (PTS) tools from two dtierent service companies. Although details differed, all the commercial downhole instruments were designed to take data and to transmit that data uphole in real time, using a singleconductor wireline. All the instruments (each company used more than one) employed a dewar, or thermal flasIq to protect

226

Resistivity Log At The Needles Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Resistivity Log At The Needles Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At The Needles Area (DOE GTP) Exploration Activity Details Location The Needles Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Resistivity_Log_At_The_Needles_Area_(DOE_GTP)&oldid=689880" Categories: Exploration Activities

227

Resistivity Log At Fort Bliss Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Resistivity Log At Fort Bliss Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Fort Bliss Area (DOE GTP) Exploration Activity Details Location Fort Bliss Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Resistivity_Log_At_Fort_Bliss_Area_(DOE_GTP)&oldid=689878" Categories: Exploration Activities

228

Resistivity Log At Fish Lake Valley Area (DOE GTP) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Resistivity Log At Fish Lake Valley Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Fish Lake Valley Area (DOE GTP) Exploration Activity Details Location Fish Lake Valley Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Resistivity_Log_At_Fish_Lake_Valley_Area_(DOE_GTP)&oldid=689876" Categories:

229

Density Log at Valles Caldera - Redondo Area (Wilt & Haar, 1986) | Open  

Open Energy Info (EERE)

Valles Caldera - Redondo Area (Wilt & Haar, 1986) Valles Caldera - Redondo Area (Wilt & Haar, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Density at Valles Caldera - Redondo Area (Wilt & Haar, 1986) Exploration Activity Details Location Valles Caldera - Redondo Area Exploration Technique Density Log Activity Date Usefulness not indicated DOE-funding Unknown Notes The density log indicates three major density units within the well section : a surface layer of caldera fill, lake deposits, and other recent alluvium (2.12 g/cm3); the Bandelier Tuff and underlying volcanic and sedimentary units (2.3--2.5 g/cm3); and the basement unit, consisting of the lower Paleozoic and the upper Precambrian (2.65 g/cm3). There are, of course, significant density variations within each unit, but for modeling

230

Ecological & Environmental Acoustic Remote Sensor (EcoEARS) Application for Long-Term Monitoring and Assessment of Wildlife  

E-Print Network (OSTI)

and Assessment of Wildlife Gonzalo Sanchez; President, Sanchez Industrial Design, Inc., 3510 Beltline Hwy due to water, wind, geologic activity (the Geophony), acoustic signals can provide information about. Signal analysis techniques to identify wildlife and simultaneous collection of environmental parameters

Maher, Robert C.

231

Artificial neural network modeling and cluster analysis for organic facies and burial history estimation using well log data: A case study of the South Pars Gas Field, Persian Gulf, Iran  

Science Journals Connector (OSTI)

Intelligent and statistical techniques were used to extract the hidden organic facies from well log responses in the Giant South Pars Gas Field, Persian Gulf, Iran. Kazhdomi Formation of Mid-Cretaceous and Kangan-Dalan Formations of Permo-Triassic Data ... Keywords: Artificial neural network, Burial history, Cluster analysis, Organic facies, Rock-Eval pyrolysis, Well log data

Bahram Alizadeh; Saeid Najjari; Ali Kadkhodaie-Ilkhchi

2012-08-01T23:59:59.000Z

232

Geothermal well log interpretation state of the art. Final report  

SciTech Connect

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

233

Spring 2011 ME706 Acoustics and Aerodynamic Sound ME706 Acoustics and Aerodynamic Sound  

E-Print Network (OSTI)

Spring 2011 ME706 Acoustics and Aerodynamic Sound ME706 Acoustics and Aerodynamic Sound Instructor-surface interaction. Spring 2011 1 ME706 Acoustics and Aerodynamic Sound #12;Spring 2011 ME706 Acoustics and Aerodynamic Sound Students are expected to: · Exhibit a level of mathematical maturity roughly equivalent

234

Lattice Boltzmann method for adiabatic acoustics  

Science Journals Connector (OSTI)

...Sauro Succi and Stefano Ubertini Lattice Boltzmann method for adiabatic acoustics...Burlington, MA 01803, USA The lattice Boltzmann method (LBM) has been proved...recovery of the full NS equations. lattice Boltzmann method|computational aero-acoustics...

2011-01-01T23:59:59.000Z

235

IN ACOUSTICS UndergraduateCourses2015  

E-Print Network (OSTI)

APPLYING SOUND KNOWLEDGE IN ACOUSTICS Acoustics UndergraduateCourses2015 #12;SOUTHA 2 #12;Reach-leadingacademicsoncoursesthataredesignedaroundyou. Wegetyoureadyfortheglobaljobsmarket,whilegivingyouagreat studentexperience. Acousticalcountriestoreducenoise REDUCING AIRCRAFT NOISE OurRollsRoyceUniversity TechnologyCentreforGas Turbine

Sóbester, András

236

Acoustic data transmission through a drill string  

DOE Patents (OSTI)

Acoustical signals are transmitted through a drill string by canceling upward moving acoustical noise and by preconditioning the data in recognition of the comb filter impedance characteristics of the drill string. 5 figs.

Drumheller, D.S.

1988-04-21T23:59:59.000Z

237

Acoustic privacy and health care.  

Science Journals Connector (OSTI)

Acoustic privacy can be differentiated into two categories: freedom from intrusive noise such as a person snoring or wheezing in the next bed traffic outside the windows carts in the hallways and footsteps on the floor above; and speech privacythe freedom from being overheard and of overhearing others. Providing the proper acoustical environment and the protecting privacy must be a joint effort between the facility designers and hospital staff. A brief discussion of the basic requirements for speech privacy and HIPAA privacy and a quality background sound will be presented.

Neil Moiseev

2010-01-01T23:59:59.000Z

238

Well Logging Security Initiatives | Y-12 National Security Complex  

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

by this browser. Download video Captions: On Watch as GTRI demonstrates the threat to the security of (oil) well logging systems and outlines the initiatives that are enhancing the...

239

Lightweight Indexing of Observational Data in Log-Structured Storage  

E-Print Network (OSTI)

with similar properties, such as process monitoring in manufacturing. 1. INTRODUCTION Humankind has a rapidly-store) is amenable to han- dling such write-intensive scenarios. A log-store appends newly arrived data to the end

Ooi, Beng Chin

240

TRUTH & CONSEQUENCES... LOG 437/537: MODEL-THEORETIC SEMANTICS  

E-Print Network (OSTI)

TRUTH & CONSEQUENCES... LOG 437/537: MODEL-THEORETIC SEMANTICS Spring 2013, TT 11:45am-1:00pm Dr and compactness of first-order logic and introduce along the way the basic notions of structure, truth

Liu, Paul

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Determination of lithology from well logs using a neural network  

SciTech Connect

The authors have developed a computer program to automatically determine lithologies from well logs using a back-propagation neural network. Unlike a conventional serial computer, a neural network is a computational system composed of nodes (sometimes called neurons, neurodes, or units) and the connections between these nodes. Neural computing attempts to emulate the functions of the mammalian brain, thus mimicking thought processes. The neural network approach differs from previous pattern recognition methods in its ability to learn from examples. Unlike conventional statistical methods, this new approach does not require sophisticated mathematics and a large amount of statistical data. This paper discusses the application of neural networks to a pattern recognition problem in geology: the determination of lithology from well logs. The neural network determined the lithologies (limestone, dolomite, sandstone, shale, sandy and dolomitic limestones, sandy dolomite, and shale sandstone) from selected well logs in a fraction of the time required by an experienced human log analyst.

Rogers, S.J.; Fang, J.H. (Univ. of Alabama, Tuscaloosa (United States)); Karr, C.L.; Stanley, D.A. (Bureau of Mines, Tuscaloosa, AL (United States))

1992-05-01T23:59:59.000Z

242

Heuristic search method for optimal zonation of well logs  

SciTech Connect

Optimal zonation of well-log data, that is, determining an optimal number of major segments such as waveforms in a log, may be achieved by employing a criterion of minimum variance (within a segment) and a heuristic search of potential boundary (link) points of digitized log data. This new method is based on an algorithm originally devised by D.M. Hawkins and D.F. Merriam in 1973. Their method can be improved by introducing a heuristic search procedure, thereby decreasing computer time by 7- to 50-fold, depending on the number of data points and configuration of the logs. Time saving is proportional to the size of the data set. Three examples - one hypothetical and two real-are used to illustrate the modification of the Hawkins and Merriam algorithm.

Chen, H.C.; Fang, J.H.

1986-07-01T23:59:59.000Z

243

Logging, Testing and Monitoring Geothermal Wells | Open Energy Information  

Open Energy Info (EERE)

Logging, Testing and Monitoring Geothermal Wells Logging, Testing and Monitoring Geothermal Wells Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Logging, Testing and Monitoring Geothermal Wells Abstract Wells or boreholes are essential components in both geothermal research and utilization as they enable a drastic increase in geothermal energy production beyond natural out-flow as well as providing access deep into the systems, not otherwise possible. Wells also play a vital role in all geothermal reservoir physics (also called reservoir engineering) research, which would be particularly ineffec-tive without the access into geothermal systems provided by wells. During drilling the main reservoir physics research is performed through logging of different parameters as functions

244

The acoustics of the outdoor Shakespeare theaterRutland, UK  

Science Journals Connector (OSTI)

The outdoor Shakespeare Amphitheatre at Tolethorpe (Rutland UK) is an unusual form of theater in that the actors perform in the open air while the audience is enclosed in a lightweight Teflon fabric auditorium. This unique format produces some unusual acoustic properties and problems. The early reflection patterns from and around the stage are quite different from a normal enclosed proscenium theater. The Teflon walls and roof while effectively acoustically transparent at low and lower midfrequencies become highly reflective at high frequencies. This not only impacts the transmission of sound through the structure but also speech transmission and intelligibility within the auditorium. The hyperbolic curved?roof surfaces and flat parallel walls were found to cause undesirable sound focusing and reflections detrimental to speech intelligibility. The acoustics of the space was investigated by means of both directional and binaural time?domain spectrometry techniques as well as more traditional acoustic measures. The paper presents the results of these measurements and outlines the remedial treatments adopted.

2000-01-01T23:59:59.000Z

245

ACOUSTIC DETECTING AND LOCATING GAS PIPE LINE INFRINGEMENT  

SciTech Connect

The extensive network of high-pressure natural gas transmission pipelines covering the United States provides an important infrastructure for our energy independence. Early detection of pipeline leaks and infringements by construction equipment, resulting in corrosion fractures, presents an important aspect of our national security policy. The National Energy Technology Laboratory Strategic Center for Natural Gas (SCVG) is and has been funding research on various applicable techniques. The WVU research team has focused on monitoring pipeline background acoustic signals generated and transmitted by gas flowing through the gas inside the pipeline. In case of a pipeline infringement, any mechanical impact on the pipe wall, or escape of high-pressure gas, generates acoustic signals traveling both up and down stream through the gas. Sudden changes in flow noise are detectable with a Portable Acoustic Monitoring Package (PAMP), developed under this contract. It incorporates a pressure compensating microphone and a signal- recording device. Direct access to the gas inside the line is obtained by mounting such a PAMP, with a 1/2 inch NPT connection, to a pipeline pressure port found near most shut-off valves. An FFT of the recorded signal subtracted by that of the background noise recorded one-second earlier appears to sufficiently isolate the infringement signal to allow source interpretation. Using cell phones for data downloading might allow a network of such 1000-psi rated PAMP's to acoustically monitor a pipeline system and be trained by neural network software to positively identify and locate any pipeline infringement.

John L. Loth; Gary J. Morris; George M. Palmer; Richard Guiler; Patrick Browning

2004-12-01T23:59:59.000Z

246

ACOUSTIC DETECTING AND LOCATING GAS PIPE LINE INFRINGEMENT  

SciTech Connect

The extensive network of high-pressure natural gas transmission pipelines covering the United States provides an important infrastructure for our energy independence. Early detection of pipeline leaks and infringements by construction equipment, resulting in corrosion fractures, presents an important aspect of our national security policy. The National Energy Technology Laboratory Strategic Center for Natural Gas (SCVG) is and has been funding research on various applicable techniques. The WVU research team has focused on monitoring pipeline background acoustic signals generated and transmitted by gas flowing through the gas inside the pipeline. In case of a pipeline infringement, any mechanical impact on the pipe wall, or escape of high-pressure gas, generates acoustic signals traveling both up and down stream through the gas. Sudden changes in flow noise are detectable with a Portable Acoustic Monitoring Package (PAMP), developed under this contract. It incorporates a pressure compensating microphone and a signal- recording device. Direct access to the gas inside the line is obtained by mounting such a PAMP, with a 1/2 inch NPT connection, to a pipeline pressure port found near most shut-off valves. An FFT of the recorded signal subtracted by that of the background noise recorded one-second earlier appears to sufficiently isolate the infringement signal to allow source interpretation. Using cell phones for data downloading might allow a network of such 1000-psi rated PAMP's to acoustically monitor a pipeline system and be trained by neural network software to positively identify and locate any pipeline infringement.

John L. Loth; Gary J. Morris; George M. Palmer; Richard Guiler; Patrick Browning

2004-10-31T23:59:59.000Z

247

Fluid-Rock Characterization and Interactions in NMR Well Logging  

SciTech Connect

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

Hirasaki, George J.; Mohanty, Kishore K.

2003-02-10T23:59:59.000Z

248

XLOGS: An expert system for environmental interpretation of wireline logs  

SciTech Connect

Wireline logs provide information on vertical sequences that can be useful for preliminary interpretation of depositional environments. Although the specific causes of any log response are related to many factors, including lithology, density, and pore fluid, geologists often can gain a general impression of vertical heterogeneity, cyclicity, and gradation without performing a rigorous petrophysical analysis of log responses. The authors have attempted to model these heuristics of well logs in a computer program - XLOGS - that emphasizes pattern recognition and fuzzy logic. XLOGS begins with segmentation of a given digitized log in interactive graphical mode. Next, the log shape is characterized by comparison with a set of type motifs, such as straight, serrated, funnel, and bell shapes. Shapes are described in terms of numerical attributes such as amplitude and slope. By using fuzzy values to express membership, any shape can be described. Related subenvironments can be recognized from characteristic vertical sequences, such as the upward-coarsening prograding delta lobe that produces a funnel-shaped mouth-bar segment above a straight to serrated prodelta segment. Variability in the depth scale is accommodated by iterative segmentation; trials with coarser or finer segmentation can be evaluated as alternative interpretations for distinguishing sequence and parasequence boundaries.

Shultz, A.W.; Fang, J.H.; Chen, H.C. (Univ. of Alabama, Tuscaloosa (United States))

1991-03-01T23:59:59.000Z

249

Graduate studies in acoustics and noise control in the School of Mechanical Engineering at Purdue University  

Science Journals Connector (OSTI)

The acoustics community at Purdue University will be described with special emphasis on the graduate program in Mechanical Engineering (ME). Purdue is home to around 30 faculty who study various aspects of acoustics and related disciplines and so there are many classes to choose from as graduate students structure their plans of study to complement their research activities and to broaden their understanding of the various aspects of acoustics. In Mechanical Engineering the primary emphasis is on understanding noise generation noise propagation and the impact of noise on people as well as development of noise control strategies experimental techniques and noise and noise impact prediction tools. The ME acoustics research is conducted at the Ray W. Herrick Laboratories which houses several large acoustics chambers that are designed to facilitate testing of a wide array mechanical systems reflecting the Laboratories long history of industry-relevant research. Complementing the acoustics research Purdue has vibrations dynamics and electromechanical systems research programs and is home to a collaborative group of engineering and psychology professors who study human perception and its integration into engineering design. There are also very strong ties between ME acoustics faculty and faculty in Biomedical Engineering and Speech Language and Hearing Sciences.

2014-01-01T23:59:59.000Z

250

Role of acoustical technology in the development of new energy sources  

Science Journals Connector (OSTI)

During the past five years considerable progress has been made in the control and abatement of excessive and/or harmful noise as well as vibration associated with the transportation construction and industrial activities and systems. This has been a definite contribution of acoustics towards improving the quality of our environment and community life alike. A similar kind of concerted effort is required whereby the know1edge of acoustics can be advantageously utilized in the development of much?needed new energy sources. Among the more challenging acoustical technologies available during exploration detection and identification of new conventional and non?conventional energy sources are those utilizing ultrasonic electroacoustics underwater acoustics and geoacoustics principles and/or disciplines. For example echo?sounding has been effectively used in the detection and assessment of marine resources. In the same way acousti?coring and seismic reflection techniques have been successfully employed during the exploration and detection phases associated with mining geology and marine sediments. However the most attractive area of new energy source development where acoustical technology can best be utilized appears to be in the exploration of active "geothermal" sites. The ground noise(seismic)measurements utilizing sensitive and precision acoustical instrumentation can tremendously accelerate development of this important untapped and nonpolluting form of natural energy. This paper reviews the interaction of acoustics with new energy resource development programs.

A. G. Jhaveri

1975-01-01T23:59:59.000Z

251

Lithology determination from well logs with fuzzy associative memory neural network  

SciTech Connect

An artificial intelligence technique of fuzzy associative memory is used to determine rock types from well-log signatures. Fuzzy associative memory (FAM) is a hybrid of neutral network and fuzzy expert system. This new approach combines the learning ability of neural network and the strengths of fuzzy linguistic modeling to adaptively infer lithologies from well-log signatures based on (1) the relationships between the lithology and log signature that the neural network have learned during the training and/or (2) geologist`s knowledge about the rocks. The method is applied to a sequence of the Ordovician rock units in northern Kansas. This paper also compares the performances of two different methods, using the same data set for meaningful comparison. The advantages of FAM are (1) expert knowledge acquired by geologists is fully utilized; (2) this knowledge is augmented by the neural network learning from the data, when available; and (3) FAM is transparent in that the knowledge is explicitly stated in the fuzzy rules.

Chang, H.C.; Chen, H.C.; Fang, J.H. [Univ. of Alabama, Tuscaloosa, AL (United States)

1997-05-01T23:59:59.000Z

252

Data Compendium for the Logging Test Pits at the ERDA Grand Junction...  

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

Data Compendium for the Logging Test Pits at the ERDA Grand Junction Compound (December 1975) Data Compendium for the Logging Test Pits at the ERDA Grand Junction Compound...

253

Keyboard Acoustic Emanations Scott Leishman  

E-Print Network (OSTI)

of this step is the matrix. After that, the Viterbi algorithm [11] is used to infer qi, i.e. the best sequenceKeyboard Acoustic Emanations Scott Leishman ML Tea Talk - May 3rd, 2006 1 (or why you shouldn

Roweis, Sam

254

Acoustic Energy and Stellar Models  

Science Journals Connector (OSTI)

... the thermodynamic limitations of the generation of acoustic energy in stars. Quite recently, M. Schwarzschild and R. S. Richardson suggested that the transfer of energy in stars may, ... a heat engine, and this consideration does not support the views expressed by Richardson and Schwarzschild in dealing with the stellar model of red giants. In this model they suggest ...

1949-08-20T23:59:59.000Z

255

E-Print Network 3.0 - acoustic oscillation signature Sample Search...  

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

47 ACOUSTICAL EFFECTS OF INTERNAL TIDES ACOUSTICAL EFFECTS OF INTERNAL TIDES ON SHALLOW WATER Summary: ACOUSTICAL EFFECTS OF INTERNAL TIDES ACOUSTICAL EFFECTS OF INTERNAL TIDES...

256

Non-radial instabilities of isothermal Bondi accretion with a shock: vortical-acoustic cycle vs post-shock acceleration  

E-Print Network (OSTI)

The linear stability of isothermal Bondi accretion with a shock is studied analytically in the asymptotic limit of high incident Mach number M_1. The flow is unstable with respect to radial perturbations as expected by Nakayama (1993), due to post-shock acceleration. Its growth time scales like the advection time from the shock r_sh to the sonic point r_son. The growth rate of non-radial perturbations l=1 is higher by a factor M_1^{2/3}, and is therefore intermediate between the advection and acoustic frequencies. Besides these instabilities based on post-shock acceleration, our study revealed another generic mechanism based on the cycle of acoustic and vortical perturbations between the shock and the sonic radius, independently of the sign of post-shock acceleration. The vortical-acoustic instability is fundamentally non-radial. It is fed by the efficient excitation of vorticity waves by the isothermal shock perturbed by acoustic waves. The growth rate exceeds the advection rate by a factor log M_1. Unstable modes cover a wide range of frequencies from the fundamental acoustic frequency ~c/r_sh up to a cut-off ~c/r_son associated with the sonic radius. The highest growth rate is reached for l=1 modes near the cut-off. The additional cycle of acoustic waves between the shock and the sonic radius is responsible for variations of the growth rate by a factor up to 3 depending on its phase relative to the vortical-acoustic cycle. The instability also exists, with a similar growth rate, below the fundamental acoustic frequency down to the advection frequency, as vorticity waves are efficiently coupled to the region of pseudosound. These results open new perspectives to address the stability of shocked accretion flows.

T. Foglizzo

2002-06-17T23:59:59.000Z

257

Acoustic studies for alpha background rejection in dark matter bubble chamber detectors  

SciTech Connect

COUPP (Chicagoland Observatory for Underground Particle Physics) is an experiment with bubble chambers able to detect dark matter directly either with Spin-Dependent or with Spin-Independent interactions. The target material is a superheated liquid (usually CF3I) that can be bubble nucleated due to nuclear recoils produced by elastic collisions of dark matter particles. The bubble growth inside the chamber is accompanied with an acoustic signature. The acoustic technique has been successfully used to have a good alpha discrimination (about 99%). In this paper, we present different studies and results related with the characterization of the acoustic properties of the detector and the different phenomena involved in the acoustic measurements of the bubble growth, such as sound generation, sound transmission and optimization of piezoelectric transducers.

Bou-Cabo, M.; Felis, I.; Ardid, M.; Collaboration: COUPP Collaboration

2013-08-08T23:59:59.000Z

258

A Methodology to Integrate Magnetic Resonance and Acoustic Measurements for Reservoir Characterization  

SciTech Connect

This report contains eight sections. Some individual subsections contain lists of references as well as figures and conclusions when appropriate. The first section includes the introduction and summary of the first-year project efforts. The next section describes the results of the project tasks: (1) implementation of theoretical relations between effect dispersion and the stochastic medium, (2) imaging analyses using core and well log data, (3) construction of dispersion and attenuation models at the core and borehole scales in poroelastic media, (4) petrophysics and a catalog of core and well log data from Siberia Ridge field, (5) acoustic/geotechnical measurements and CT imaging of core samples from Florida carbonates, and (6) development of an algorithm to predict pore size distribution from NMR core data. The last section includes a summary of accomplishments, technology transfer activities and follow-on work for Phase II.

Parra, Jorge O.; Hackert, Chris L.; Ni, Qingwen; Collier, Hughbert A.

2000-09-22T23:59:59.000Z

259

A Methodology to Integrate Magnetic Resonance and Acoustic Measurements for Reservoir Characterization  

SciTech Connect

The objective of this project was to develop an advanced imaging method, including pore scale imaging, to integrate NMR techniques and acoustic measurements to improve predictability of the pay zone in hydrocarbon reservoirs. This is accomplished by extracting the fluid property parameters using NMR laboratory measurements and the elastic parameters of the rock matrix from acoustic measurements to create poroelastic models of different parts of the reservoir. Laboratory measurement techniques and core imaging are being linked with a balanced petrographical analysis of the core and theoretical model.

Parra, Jorge O.; Hackert, Chris L.; Collier, Hughbert A.; Bennett, Michael

2002-01-29T23:59:59.000Z

260

Connect & Log In | Argonne Leadership Computing Facility  

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

Account Information Accounts and Access FAQ Connect & Log In Using CRYPTOCards SSH Keys on Surveyor Disk Space Quota Management Allocations Decommissioning of BG/P Systems and Resources Blue Gene/Q Versus Blue Gene/P Mira/Cetus/Vesta Intrepid/Challenger/Surveyor Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] Connect & Log In Users log into ALCF resources via ssh. ssh mira.alcf.anl.gov -l Resources that are accessible via ssh are vesta.alcf.anl.gov, mira.alcf.anl.gov, surveyor.alcf.anl.gov, intrepid.alcf.anl.gov, cetus.alcf.anl.gov, challenger.alcf.anl.gov, tukey.alcf.anl.gov, eureka.alcf.anl.gov, and gadzooks.alcf.anl.gov.

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Ultrasonic logging in cased boreholes for corrosion evaluation  

SciTech Connect

The UltraSonic Imager (USI) is a wireline tool used for cement and casing evaluation. The USI tool uses a rotating ultrasonic transducer to give full coverage of the casing at high resolution. Each measurement made by the tool is presented with its associated color image. For corrosion applications, the most important of these measurements are casing internal radius and thickness. The color image format can be used to determine metal loss percentage, but also plays a key role in quality control to validate the characteristics of the log. The Bureau of Land Management has recently instructed operators in the Imperial Valley to perform casing integrity testing on geothermal injection wells sufficiently past the zones of fresh water to prevent contamination. Wireline logging with the USI tool is currently being used to perform the casing evaluations. Field examples illustrate results of the corrosion, mechanical wear, and internal scale deposits detected from the logs. Recovered casing is shown to validate the tool response.

Woods, T. [Schlumberger Well Services, Signal Hill, CA (United States)

1995-12-31T23:59:59.000Z

262

Multi-rate flowing Wellbore electric conductivity logging method  

SciTech Connect

The flowing wellbore electric conductivity logging method involves the replacement of wellbore water by de-ionized or constant-salinity water, followed by constant pumping with rate Q, during which a series of fluid electric conductivity logs are taken. The logs can be analyzed to identify depth locations of inflow, and evaluate the transmissivity and electric conductivity (salinity) of the fluid at each inflow point. The present paper proposes the use of the method with two or more pumping rates. In particular it is recommended that the method be applied three times with pumping rates Q, Q /2, and 2Q. Then a combined analysis of the multi-rate data allows an efficient means of determining transmissivity and salinity values of all inflow points along a well with a confidence measure, as well as their inherent or far-field pressure heads. The method is illustrated by a practical example.

Tsang, Chin-Fu; Doughty, Christine

2003-04-22T23:59:59.000Z

263

VerSum: Verifiable Computations over Large Public Logs Jelle van den Hooff  

E-Print Network (OSTI)

blockchains, or a Certificate Transparency log. VERSUM clients ensure that the output is correct by comparing

Gummadi, Ramakrishna

264

Cylindrical acoustic levitator/concentrator  

DOE Patents (OSTI)

A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially available, hollow cylindrical piezoelectric crystal which has been modified to tune the resonance frequency of the breathing mode resonance of the crystal to that of the interior cavity of the cylinder. When the resonance frequency of the interior cylindrical cavity is matched to the breathing mode resonance of the cylindrical piezoelectric transducer, the acoustic efficiency for establishing a standing wave pattern in the cavity is high. The cylinder does not require accurate alignment of a resonant cavity. Water droplets having diameters greater than 1 mm have been levitated against the force of gravity using; less than 1 W of input electrical power. Concentration of aerosol particles in air is also demonstrated.

Kaduchak, Gregory (Los Alamos, NM); Sinha, Dipen N. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

265

Acoustic behavior of triple glazings  

Science Journals Connector (OSTI)

Making of triple glazings is the only way to still improve thermal performances of Insulating Glass Units. Possible ways with double glazings are already in use: increase the space between glasses use low emissivity coatings and special gas with lower thermal conductivity as argon or krypton. Specific acoustic weak point of double glazings is the resonance between the two panes which works as a mass spring mass system and coupling of eigenmodes of panes through the air (gas) cavity. These phenomena are of course still more important with triple glazings as there are two resonances. The paper will give all comparative data concerning thermal and acoustic performances and describe a way to achieve the same single number values of sound transmission loss with triple glazing that with double glazing by adding absorption in the gas cavities.

Marc Rehfeld; David Fournier

2008-01-01T23:59:59.000Z

266

Acoustic characteristics of English fricatives  

E-Print Network (OSTI)

of noise spectrum, while there are some data suggesting that /f,v/ may be distin- guished from /Y,Z/ on the basis of transition information.a!Electronic mail: jongman@ukans.edu 1252 1252J. Acoust. Soc. Am. 108 (3), Pt. 1, Sep 2000 0001...! Variance ~MHz! Skewness Kurtosis /f,v/ 5108 6.37 0.077 2.11 /T,D/ 5137 6.19 20.083 1.27 /s,z/ 6133 2.92 20.229 2.36 /S,Z/ 4229 3.38 0.693 0.421257 J. Acoust. Soc. Am., Vol. 108, No. 3, Pt. 1, Sep 2000with h2 ranging from 0.001 for skewness to 0.004 for spec...

Jongman, Allard; Wayland, Ratree; Wong, Serena

2000-09-01T23:59:59.000Z

267

Log-periodic oscillations of transverse momentum distributions  

E-Print Network (OSTI)

Large p_T transverse momentum distributions exhibit apparently a power-like behavior. We argue that, under closer inspection, this behavior is in fact decorated with some log-periodic oscillations. Assuming that this is genuine effect and not experimental artefact, it suggests that either the exponent of the power-like behavior is in reality complex number or that there is a scale parameter which exhibits specific log-eriodic oscillations. This problem is discussed using Tsallis distributions with scale parameter being a temperature T. At this stage we consider both possibilities on equal footing.

Grzegorz Wilk; Zbigniew Wlodarczyk

2014-03-14T23:59:59.000Z

268

Vertical axis wind turbine acoustics  

E-Print Network (OSTI)

Vertical Axis Wind Turbine Acoustics Charlie Pearson Corpus Christi College Cambridge University Engineering Department A thesis submitted for the degree of Doctor of Philosophy September 2013 Declaration Described in this dissertation is work... quickly to changing wind conditions, small- scale vertical axis wind turbines (VAWTs) have been proposed as an efficient solution for deployment in built up areas, where the wind is more gusty in nature. If VAWTs are erected in built up areas...

Pearson, Charlie

2014-04-08T23:59:59.000Z

269

Frustrated total internal reflection acoustic field sensor  

DOE Patents (OSTI)

A frustrated total internal reflection acoustic field sensor which allows the acquisition of the acoustic field over an entire plane, all at once. The sensor finds use in acoustic holography and acoustic diffraction tomography. For example, the sensor may be produced by a transparent plate with transparent support members tall enough to support one or more flexible membranes at an appropriate height for frustrated total internal reflection to occur. An acoustic wave causes the membrane to deflect away from its quiescent position and thus changes the amount of light that tunnels through the gap formed by the support members and into the membrane, and so changes the amount of light reflected by the membrane. The sensor(s) is illuminated by a uniform tight field, and the reflection from the sensor yields acoustic wave amplitude and phase information which can be picked up electronically or otherwise.

Kallman, Jeffrey S. (Pleasanton, CA)

2000-01-01T23:59:59.000Z

270

A new effective Monte Carlo Midway coupling method in MCNP applied to a well logging problem  

Science Journals Connector (OSTI)

The background of the Midway forwardadjoint coupling method including the black absorber technique for efficient Monte Carlo determination of radiation detector responses is described. The method is implemented in the general purpose MCNP Monte Carlo code. The utilization of the method is fairly straightforward and does not require any substantial extra expertise. The method was applied to a standard neutron well logging porosity tool problem. The results exhibit reliability and high efficiency of the Midway method. For the studied problem the efficiency gain is considerably higher than for a normal forward calculation, which is already strongly optimized by weight-windows. No additional effort is required to adjust the Midway model if the position of the detector or the porosity of the formation is changed. Additionally, the Midway method can be used with other variance reduction techniques if extra gain in efficiency is desired.

I.V. Serov; T.M. John; J.E. Hoogenboom

1998-01-01T23:59:59.000Z

271

Laboratory measurements of acoustic scattering from a temperature and salinity gradient  

Science Journals Connector (OSTI)

Recently developed theoretical scattering models predict that acoustic scattering from temperature and salinity microstructure at high frequencies (10 kHz1 MHz) can be significant under certain oceanographic conditions. The results of this theoretical work suggest that it may be possible to use acoustic scattering techniques in combination with the scattering models to estimate oceanographic parameters such as the dissipation rate of turbulent kinetic energy. In addition quantification of the scattering contributions from temperature and salinity microstructure can play an important role in correctly interpreting acoustic surveys of marine life since recent field data indicate that the acoustic returns from zooplankton and microstructure can be of similar strength. Acoustic backscatter from a sharp temperature and salinity gradient was measured in a tank capable of generating and sustaining a thin double?diffusive layer (12 cm thick) between two water masses (cold fresh residing above warm salty water). Vertical shear temperature and salinity profiles were measured during the experiment to provide input to the acoustic scattering models. Backscatter was measured at frequencies between 24 kHz and 500 kHz and as a function of range from the sharp interface as part of a program to measure the backscattering from microstructure. a)Currently at Southwest Fisheries Science Center La Jolla CA 92037.

2001-01-01T23:59:59.000Z

272

Successfully merging architectural and electronic acoustical treatments  

Science Journals Connector (OSTI)

In enclosed volumes the integration of electronic acoustical components with architectural surface treatments forms a hybrid system that produces the perceived acoustical conditions. Since the underlying operating principles for electro-acoustic enhancement systems differs considerably between manufacturers the requirements for system infrastructure are not germane nor is the optimum integration of architectural treatments. As a result the nature of the work performed by the acoustical consultant changes to accommodate optimum performance of the specific hybrid system which may also include other forms of variable treatments.

Steve Barbar

2011-01-01T23:59:59.000Z

273

Surface acoustic wave for microfluidic applications.  

E-Print Network (OSTI)

??Surface acoustic wave-based (SAW) microfluidics attracts attention from microfluidic research community due to its simple fabrication, large force and fast, yet efficient operation. The scope (more)

Luong, Trung Dung.

2012-01-01T23:59:59.000Z

274

Acoustic concentration of particles in fluid flow  

SciTech Connect

An apparatus for acoustic concentration of particles in a fluid flow includes a substantially acoustically transparent membrane and a vibration generator that define a fluid flow path therebetween. The fluid flow path is in fluid communication with a fluid source and a fluid outlet and the vibration generator is disposed adjacent the fluid flow path and is capable of producing an acoustic field in the fluid flow path. The acoustic field produces at least one pressure minima in the fluid flow path at a predetermined location within the fluid flow path and forces predetermined particles in the fluid flow path to the at least one pressure minima.

Ward, Michael D. (Los Alamos, NM); Kaduchak, Gregory (Los Alamos, NM)

2010-11-23T23:59:59.000Z

275

Acoustic Concentration Of Particles In Fluid Flow  

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

in a fluid flow includes a substantially acoustically transparent membrane and a vibration generator that define a fluid flow path therebetween. Available for thumbnail of...

276

Numerical Modeling of Acoustic Timescale Detonation Initiation Using the Adaptive  

E-Print Network (OSTI)

Numerical Modeling of Acoustic Timescale Detonation Initiation Using the Adaptive Wavelet 2008 #12;This thesis entitled: Numerical Modeling of Acoustic Timescale Detonation Initiation Using. (Ph.D.) Numerical Modeling of Acoustic Timescale Detonation Initiation Using the Adaptive Wavelet

Vasilyev, Oleg V.

277

Physiological Bases of Acoustic LRT in Nonstutterers, Mild  

E-Print Network (OSTI)

Physiological Bases of Acoustic LRT in Nonstutterers, Mild Stutterers, and Severe Stutterers* Ben C stutterers' prolonged acoustic laryngeal reaction time (LRT) values. Prephonatory kinematic data were foreperiods. Acoustic data replicated a previously observed composite stuttering severity and foreperiod

278

Synthetic logs generator for fraud detection in mobile transfer services  

E-Print Network (OSTI)

Synthetic logs generator for fraud detection in mobile transfer services C. Gaber12 , B. Hemery2.gaber,mohammed.achemlal}@orange.com Abstract. This article presents a simulator which generates synthetic data for fraud detection. It models fraudsters and legitimate users. Keywords: synthetic data, simulation, fraud detection Mobile payments become

Boyer, Edmond

279

Ethics, Logs and Videotape: Ethics in Large Scale User Trials  

E-Print Network (OSTI)

Ethics, Logs and Videotape: Ethics in Large Scale User Trials and User Generated Content Abstract ethical responsibilities we have towards participants. This workshop brings together researchers to discuss the ethical issues of running large-scale user trials, and to provide guidance for future research

Paris-Sud XI, Université de

280

Subsistence Halibut Community Harvest Log Page 1 of 4  

E-Print Network (OSTI)

-0512, Expiration date: 07/31/2014 Subsistence Halibut Community Harvest Permit (CHP) Log U.S. Dept of Commerce-1668 Telephone: 1-800-304-4846 FAX: 907-586-7354 BLOCK A ­ CHP COORDINATOR 1. Name of CHP Coordinator 2. Signature of CHP Coordinator BLOCK B -- SUBSISTENCE FISHER IDENTIFICATION 1. Name of Fisher (First, Middle

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Dataset Descriptions and Results Various StatLog partners  

E-Print Network (OSTI)

9 Dataset Descriptions and Results Various StatLog partners See Appendix C for a full list 1 9.1 INTRODUCTION We group the dataset results according to domain type, although this distinction is perhaps arbitrary at times. There are three credit datasets, of which two follow in the next section; the third

Taylor, Charles C.

282

Signal Processing in Acoustics: Science or Science Fiction?  

Science Journals Connector (OSTI)

Signal processing in acoustics is based on one fundamental conceptextracting critical information from noisy uncertain measurement data. Acoustical processing problems can lead to some complex and intricate paradigms to perform this extraction especially from noisy sometimes inadequate measurements. Whether the data are created using a seismic geophone sensor from a monitoring network or an array of hydrophone transducers located on the hull of an ocean?going vessel the basic processing problem remains the sameextract the useful information. Techniques in signal processing (e.g. filtering Fourier transforms time?frequency and wavelet transforms) are effective; however as the underlying acoustical process generating the measurements becomes more complex the resulting processor may require more and more information about the process phenomenology to extract the desired information. The challenge is to formulate a meaningful strategy that is aimed at performing the processing required even in the face of these high uncertainties. In this article we briefly discuss this underlying signal processing philosophy from a bottoms?up perspective enabling the problem to dictate the solution rather than visa?versa. Once accomplished we ask ourselves the final and telling question Did it work or are we kidding ourselves? Are the results science or are they science fiction?

James V. Candy

2008-01-01T23:59:59.000Z

283

Preprint Collection of Charles J. Wilson Measurement of acoustic startle response in mice*  

E-Print Network (OSTI)

for measurement of acoustic startle response in mice is described. The technique utilizes a spring suspended lever of a postage stamp scale or similar spring suspension system, to which a small animal cham- ber is attached include the induction of a current in a coil by movement of a magnet attached to the animal chamber (e

Wilson, Charles J.

284

Identification of circumferential acoustic waves propagating around the tube by multiresolution analysis  

E-Print Network (OSTI)

. The backscattering complex pressure in far filled of the cylindrical shell immersed in water (Fig. 1) is given (MRA) of the wavelet transform. This technique is applied for decomposition of the original acoustic is specially concerned with the application of the Multiresolution analysis of the wavelet transform

Boyer, Edmond

285

Submitted to Physics of Fluids, 2013 Scaling and dimensional analysis of acoustic streaming jets.  

E-Print Network (OSTI)

'Instrumentation et d'Expérimentationen Mécanique des Fluides et Thermohydraulique, DEN/DANS/DM2S/STMF/LIEFT, CEA ultrasounds are used to measure velocities in a liquid. This technique has been widely used since the late, 2013 2 generate significant acoustic streaming flows so that a bias is observed in the measurement

Boyer, Edmond

286

Statistical energy analysis limits for acoustic radiation car: an alternative approach  

Science Journals Connector (OSTI)

Due to a new pass?by noise regulation Vehicle exterior noise will have to be reduced in the coming years. This may be achieved by optimizing underbody and underhood absorption and screening apertures. There is then a need for numerical techniques able to predict sound reduction related to acoustic absorption and transmission loss changes. Through a work supported by ADEME and headed by PSA energy?based predictive techniques such as Analytical Statistical Energy Analysis (ASEA) and discretized Energy Flow Analysis (DEFA) were tested against the actual physical problem to be solved through a series of benchmarks. Both theories are compared across several simple acoustic problems. It is concluded that both methods do not fit to the initial acoustic optimization requirement due to their intrinsic assumptions that restrict their applicative range. More fitted numerical techniques are now investigated: among new candidates the Virtual SEA (VSEA) technique that allows the creation of a numerical model of coupled acoustic cavities from the finite element global modes without the serious limitations of ASEA and a matrix approach based on Craigh?Bampton substructuration of the cavities.

Grard Borello; Alex Borello; Julien Primus; Laurent Gagliardini

2008-01-01T23:59:59.000Z

287

ACOUSTIC REMOTE SENSING OF THE NORTH PACIFIC ON GYRE AND REGIONAL SCALES  

E-Print Network (OSTI)

ACOUSTIC REMOTE SENSING OF THE NORTH PACIFIC ON GYRE AND REGIONAL SCALES B. DUSHAW Applied Physics has evolved into a multipurpose remote sensing measurement technique that has been employed in a wide for observing regions of active convection, for measuring changes in integrated heat content, for observing

Dushaw, Brian

288

[open quotes]2-Step[close quotes] log analysis of the Spellacy reservoir in the giant Midway-Sunset Field, Kern County, California  

SciTech Connect

A technique is presented for simple, effective log analysis of (Miocene) [open quotes]Spellacy[close quotes] sands and conglomerates of the Santa Margarita Formation at Midway-Sunset Field in Kern County, California. Results are shown graphically on the log display and are quantified for mapping. Requirements are digital wireline data -- in this simple case, just resistivity and porosities - and flexible log analysis software such as QLA2[trademark]. The first step of this technique discriminates between reservoir-quality and non-reservoir-quality intervals yielding three color-coded categories. A narrow color-filled column is added to the well log display to graphically communicate the vertical distribution of reservoir-quality and barrier intervals. The second step performs a fluid analysis on the reservoir-quality category (intervals) yielding three more color-coded categories. The results of the fluid analysis are graphically displayed in a second narrow color-filled column on the well log. Analysis results are captured from a tabular report for mapping. Quantifiable products include (1) thicknesses: original net pay, current net pay, reservoir quality, total sand, total porosity, phi-H, etc.; (2) averages: original net pay porosity; current net pay porosity, current net pay saturation, current net pay bulk volume oil, etc.; and (3) ratios: thickness of reservoir quality to total sand and thickness of current net pay to total interval.

Sturm, D.H. (Santa Fe Energy Resources, Bakersfield, CA (United States))

1996-01-01T23:59:59.000Z

289

{open_quotes}2-Step{close_quotes} log analysis of the Spellacy reservoir in the giant Midway-Sunset Field, Kern County, California  

SciTech Connect

A technique is presented for simple, effective log analysis of (Miocene) {open_quotes}Spellacy{close_quotes} sands and conglomerates of the Santa Margarita Formation at Midway-Sunset Field in Kern County, California. Results are shown graphically on the log display and are quantified for mapping. Requirements are digital wireline data -- in this simple case, just resistivity and porosities - and flexible log analysis software such as QLA2{trademark}. The first step of this technique discriminates between reservoir-quality and non-reservoir-quality intervals yielding three color-coded categories. A narrow color-filled column is added to the well log display to graphically communicate the vertical distribution of reservoir-quality and barrier intervals. The second step performs a fluid analysis on the reservoir-quality category (intervals) yielding three more color-coded categories. The results of the fluid analysis are graphically displayed in a second narrow color-filled column on the well log. Analysis results are captured from a tabular report for mapping. Quantifiable products include (1) thicknesses: original net pay, current net pay, reservoir quality, total sand, total porosity, phi-H, etc.; (2) averages: original net pay porosity; current net pay porosity, current net pay saturation, current net pay bulk volume oil, etc.; and (3) ratios: thickness of reservoir quality to total sand and thickness of current net pay to total interval.

Sturm, D.H. [Santa Fe Energy Resources, Bakersfield, CA (United States)

1996-12-31T23:59:59.000Z

290

Acoustics as a Human Science  

Science Journals Connector (OSTI)

There was a time when acoustics was only a human science but this changed as philosophers learned to use mathematical and other measurement tools for ordering and validating their thought processes. This century has seen many changes in the description of the field as a whole and the human aspects continue to be among the most perplexing. The highlights of accomplishments to date some observations on our current status of knowledge and some projections into the future are presented for your entertainmentif not for your information.

S. S. Stevens

1972-01-01T23:59:59.000Z

291

Distributed acoustical assimilation in the equatorial Pacific Ocean  

Science Journals Connector (OSTI)

The possibility of using a dynamical?model?based equatorial oceandata assimilation technique as the basis for tomographic inversion is explored. In the equatorial Pacific relatively few ray paths come near the surface causing difficulty for most inversion techniques. A data assimilation technique being developed at the Physical Oceanography Division of AOML/NOAA [Thacker and Long in preparation] uses a dynamical approach that can provide coupling between the deep conditions that are directly sensed by the acoustics and the near surface events that are of direct climatic significance. The model decomposes temperature variability into dynamical modes identifiable with Kelvin and Rossby waves; the sensitivity of individual ray?path travel times to the modes is used as the basis for the inversion. The acoustic data is assimilated with other oceanmeasurements by using a LaGrange multiplier approach constrained by the dynamics. Ray tracing results using equatorial Pacific temperature data are presented which show the promise of dynamical?model assimilation based tomographic inversion as a means of detecting near surface temperature anomalies in the equatorial Pacific.

Thomas L. Clarke; John R. Proni

1986-01-01T23:59:59.000Z

292

Guided wave acoustic monitoring of corrosion in recovery boiler tubing  

SciTech Connect

Corrosion of tubing used in black-liquor recovery boilers is a major concern in all pulp and paper mills. Extensive corrosion in recovery boiler tubes can result in a significant safety and environmental hazard. Considerable plant resources are expended to inspect recovery boiler tubing. Currently, visual and ultrasonic inspections are primarily used during the annual maintenance shutdown to monitor corrosion rates and cracking of tubing. This Department of Energy, Office of Industrial Technologies project is developing guided acoustic waves for use on recovery boiler tubing. The feature of this acoustic technique is its cost-effectiveness in inspecting long lengths of tubes from a single inspection point. A piezoelectric or electromagnetic transducer induces guided waves into the tubes. The transducer detects fireside defects from the coldside or fireside of the tube. Cracking and thinning on recovery boiler tubes have been detected with this technique in both laboratory and field applications. This technique appears very promising for recovery boiler tube application, potentially expediting annual inspection of tube integrity.

Quarry, M J; Chinn, D J

2004-02-19T23:59:59.000Z

293

Acoustical Communications for Wireless Downhole Telemetry Systems  

E-Print Network (OSTI)

on this testbed in order to characterize the channel behavior are explained as well. Moreover, the large scale statistics of the acoustic waves along the pipe string are described. Results of this work indicate that acoustic waves experience a frequency- dependent...

Farraj, Abdallah

2012-08-22T23:59:59.000Z

294

ACOUSTIC FORMING FOR ENHANCED DEWATERING AND FORMATION  

SciTech Connect

The next generation of forming elements based on acoustic excitation to increase drainage and enhances formation both with on-line control and profiling capabilities has been investigated in this project. The system can be designed and optimized based on the fundamental experimental and computational analysis and investigation of acoustic waves in a fiber suspension flow and interaction with the forming wire.

Cyrus K Aidun

2007-11-30T23:59:59.000Z

295

Multiresolution Reproducing Kernel Particle Methods in Acoustics  

E-Print Network (OSTI)

, and reliability of dynamic analysis. This is of great importance because the noise prediction of a complexMultiresolution Reproducing Kernel Particle Methods in Acoustics R. A. Uras Reactor Engineering In the analysis of complex phenomena of acoustic systems, the computational model­ ing requires special attention

Liu, Wing Kam

296

R. White, Comsol Acoustics Introduction, 2012  

E-Print Network (OSTI)

R. White, Comsol Acoustics Introduction, © 2012 Tutorial Created in Comsol 4.3 (2012) #12;R. White Variables ­ space and time (x,y,z,t) Dependent Variables ­ unknown field (such as u) #12;R. White, Comsol (such as u) #12;R. White, Comsol Acoustics Introduction, © 2012 Finite Element Analysis (FEA / FEM) ­ 1

White, Robert D.

297

Acoustics of technology enabled collaborative learning environments.  

Science Journals Connector (OSTI)

Collaborative classrooms and workstations are increasingly common in higher education buildings. These spaces present unique acoustical challenges that force designers to rethink traditional concepts and solutions. In student?centered classrooms the lecturer is removed as the visual and acoustical center of attention. Instead students are seated in groups around technology enabled workstations often facing away from the lecturer and other students. Acoustical conditions must support small?group interaction classroom discussion and learning via multimedia content. Outside the classroom collaborative workstations vary greatly but typically facilitate small?group interaction around a multimedia display and/or work surface. To promote impromptu use by students these spaces are often open to highly public areas of learning commons classroom buildings and digital libraries. Traditional noise control solutions fail to isolate these spaces without compromising their spontaneous feel and function. Despite obvious acoustical challenges both space types will continue to proliferate and new acoustical solutions must be developed.

Gregory A. Coudriet; Jeffery E. Babich

2010-01-01T23:59:59.000Z

298

Slimhole Drilling, Logging, and Completion Technology - An Update  

SciTech Connect

Using slim holes (diameter < 15 cm) for geothermal exploration and small-scale power production can produce significant cost savings compared to conventional rotary-drilling methods. In addition, data obtained from slim holes can be used to lower the risks and costs associated with the drilling and completion of large-diameter geothermal wells. As a prime contractor to the U.S. Department of Energy (DOE), Sandia National Laboratories has worked with industry since 1992 to develop and promote drilling, testing, and logging technology for slim holes. This paper describes the current status of work done both in-house and contracted to industry. It focuses on drilling technology, case histories of slimhole drilling projects, data collection and rig instrumentation, and high-temperature logging tools.

FINGER,JOHN T.; JACOBSON,RONALD D.

1999-10-07T23:59:59.000Z

299

Use of dipmeter logs to refine structural mapping of Teapot Dome, Wyoming  

SciTech Connect

Teapot field, now Naval Petroleum Reserve 3, is an elongated, asymmetric structural dome with a north-northeast axial trend located on the southwest edge of the Powder River basin. Currently, more than 800 wells of various depths penetrate multiple reservoirs; over 30 dipmeter logs have been run during the past 34 years. Although structure contour maps of individual stratigraphic horizons have been drawn simply from conventional well data, more subtle features of deformation are interpreted from the use of dipmeter logs. Because dips are generally less than 15/sup 0/, careful computation of transverse and longitudinal dip directions was required for detailed structural analysis. All depth, dip, and azimuth data were entered into computer files, and a flow chart of steps for computer processing and structural interpretation was devised and followed. As designed by C.A. Bengston, SCAT (Statistical Curvature Analysis Technique) plots were drawn by computer. Interpretation of SCAT plots yielded quantitative descriptions of the asymmetry of Teapot dome, curvature of the anticlinal axial plane, vertical discontinuity of beds, location and orientation of normal faults, and curvature of beds in drag zones adjacent to faults. Structural definition was necessary to outline boundaries of reservoirs with tilted fluid contacts on the flanks of the dome and along fault planes. Location of such faults would be particularly important for the discovery of deeper pools, for instance, in the Tensleep Formation.

Beinkafner, K.J.

1986-08-01T23:59:59.000Z

300

A Methodology to Integrate Magnetic Resonance and Acoustic Measurements for Reservoir Characterization  

SciTech Connect

The objective of this project was to develop an advanced imaging method, including pore scale imaging, to integrate magnetic resonance (MR) techniques and acoustic measurements to improve predictability of the pay zone in two hydrocarbon reservoirs. This was accomplished by extracting the fluid property parameters using MR laboratory measurements and the elastic parameters of the rock matrix from acoustic measurements to create poroelastic models of different parts of the reservoir. Laboratory measurements were compared with petrographic analysis results to determine the relative roles of petrographic elements such as porosity type, mineralogy, texture, and distribution of clay and cement in creating permeability heterogeneity.

Parra, J.O.

2001-01-26T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Stratigraphic correlation of well logs using relational tree  

SciTech Connect

A heuristic waveform correlation scheme of well logs is based on a relational tree matching. Waveforms (well logs) are represented in a data structure known as a relational tree. A relational tree provides a complete description of the contextural relationships, as defined by peaks and valleys of the waveforms. The correlational scheme consists of a distance-measuring process using all possible peak attributes. First, a distance function is defined for any two nodes in terms of peak attributes. To find the best match for a given node of a given waveform, the authors measure the distance between the given node and each node from a predefined subset of the second waveform. The closest one is considered to be the matched node. The process is repeated for every node in the waveform. This quantitative correlation method has been implemented and tested with well logs from the Black Warrior basin, north Alabama. Results showed that the procedure has the capability of handling the thickening and thinning strata, as well as missing intervals.

Fang, J.H.; Tsay, F.; Lai, P.F.

1986-05-01T23:59:59.000Z

302

R. White, Comsol Acoustics Introduction, 2/25/08  

E-Print Network (OSTI)

R. White, Comsol Acoustics Introduction, 2/25/08 #12;R. White, Comsol Acoustics Introduction, 2,y,z,t) Dependent Variables ­ unknown field (such as u) #12;R. White, Comsol Acoustics Introduction, 2/25/08 Finite ­ space and time (x,y,z,t) Dependent Variables ­ unknown field (such as u) #12;R. White, Comsol Acoustics

White, Robert D.

303

V-068: Citrix CloudPlatform Logs Potentially Sensitive Information in the  

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

8: Citrix CloudPlatform Logs Potentially Sensitive Information 8: Citrix CloudPlatform Logs Potentially Sensitive Information in the Log File V-068: Citrix CloudPlatform Logs Potentially Sensitive Information in the Log File January 14, 2013 - 12:15am Addthis PROBLEM: Citrix CloudPlatform Logs Potentially Sensitive Information in the Log File PLATFORM: Citrix CloudStack and CloudPlatform up to and including 3.0.5. ABSTRACT: A vulnerability was reported in Citrix CloudPlatform. REFERENCE LINKS: Document ID: CTX136163 SecurityTracker Alert ID: 1027978 CVE-2012-5616 IMPACT ASSESSMENT: Medium DISCUSSION: A vulnerability has been identified in Citrix CloudPlatform, formerly known as Citrix CloudStack, that could result in security-sensitive information being logged during the normal operation of the CloudPlatform server. IMPACT:

304

Boise State University Automobile Use Mileage Log (Documentation for Business Miles)  

E-Print Network (OSTI)

Boise State University Automobile Use Mileage Log (Documentation for Business Miles) Rev. 03 University Automobile Use Mileage Log (Documentation for Business Miles) Rev. 03/10 PAGE ____ (IF YOU NEED

Barrash, Warren

305

MATHEMATICS AND SCIENCE CENTERS STUDENT SERVICES ACTIVITY LOG/EVENT RECORD  

E-Print Network (OSTI)

MATHEMATICS AND SCIENCE CENTERS STUDENT SERVICES ACTIVITY LOG/EVENT RECORD Use this log for all. ENROLLEES BY TYPE: (Check one) ______ GENDER: ETHNICITY: ___ Mathematics ____ Female ___ African ___ No ___ Mathematics ___ Science ___ Technology ___ Other Describe: ____________________ 12. DESCRIPTION: (Purpose

306

Vote Selling, Voter Anonymity, and Forensic Logging of Electronic Voting Machines  

E-Print Network (OSTI)

iVotronic 8.0.1.2 Voting Machine Firmware: Final Report ForLogging of Electronic Voting Machines Sean Peisert and Mattment of electronic voting machinesforensic log- ging and

Peisert, Sean; Bishop, Matt; Yasinsac, Alec

2009-01-01T23:59:59.000Z

307

A Model for Water Factor Measurements With Fission-Neutron Logging...  

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

A Model for Water Factor Measurements With Fission-Neutron Logging Tools (May 1983) A Model for Water Factor Measurements With Fission-Neutron Logging Tools (May 1983) A Model for...

308

Dismantling techniques  

SciTech Connect

Most of the dismantling techniques used in a Decontamination and Dismantlement (D and D) project are taken from conventional demolition practices. Some modifications to the techniques are made to limit exposure to the workers or to lessen the spread of contamination to the work area. When working on a D and D project, it is best to keep the dismantling techniques and tools as simple as possible. The workers will be more efficient and safer using techniques that are familiar to them. Prior experience with the technique or use of mock-ups is the best way to keep workers safe and to keep the project on schedule.

Wiese, E.

1998-03-13T23:59:59.000Z

309

Ion acoustic solitons/double layers in two-ion plasma revisited  

SciTech Connect

Ion acoustic solitons and double layers are studied in a collisionless plasma consisting of cold heavier ion species, a warm lighter ion species, and hot electrons having Boltzmann distributions by Sagdeev pseudo-potential technique. In contrast to the previous results, no double layers and super-solitons are found when both the heavy and lighter ion species are treated as cold. Only the positive potential solitons are found in this case. When the thermal effects of the lighter ion species are included, in addition to the usual ion-acoustic solitons occurring at M?>?1 (where the Mach number, M, is defined as the ratio of the speed of the solitary wave and the ion-acoustic speed considering temperature of hot electrons and mass of the heavier ion species), slow ion-acoustic solitons/double layers are found to occur at low Mach number (M?acoustic mode is actually a new ion-ion hybrid acoustic mode which disappears when the normalized number density of lighter ion species tends to 1 (i.e., no heavier species). An interesting property of the new slow ion-acoustic mode is that at low number density of the lighter ion species, only negative potential solitons/double layers are found whereas for increasing densities there is a transition first to positive solitons/double layers, and then only positive solitons. The model can be easily applicable to the dusty plasmas having positively charged dust grains by replacing the heavier ion species by the dust mass and doing a simple normalization to take account of the dust charge.

Lakhina, G. S., E-mail: gslakhina@gmail.com; Singh, S. V., E-mail: satyavir@iigs.iigm.res.in; Kakad, A. P., E-mail: amar@iigs.iigm.res.in [Indian Institute of Geomagnetism, New Panvel (W), Navi Mumbai 410218 (India)

2014-06-15T23:59:59.000Z

310

Resistivity Log At Fort Bliss Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Resistivity Log At Fort Bliss Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Fort Bliss Area (Combs, Et Al., 1999) Exploration Activity Details Location Fort Bliss Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness not indicated DOE-funding Unknown Notes Three principal types of data were obtained from this drilling project: core samples of the lithology penetrated by the holes, records of drilling behavior (such as water level in the hole, changes in rate of penetration

311

Resistivity Log At Valles Caldera - Sulphur Springs Area (Wilt & Haar,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Resistivity Log At Valles Caldera - Sulphur Springs Area (Wilt & Haar, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Valles Caldera - Sulphur Springs Area (Wilt & Haar, 1986) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date Usefulness useful DOE-funding Unknown Notes The generalized resistivity tog (Fig. 8) indicates a multilayer section with considerable resistivity contrast between the layers. The near-surface

312

Electric Micro Imager Log At Coso Geothermal Area (2003) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Electric Micro Imager Log At Coso Geothermal Area (2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Single-Well and Cross-Well Resistivity At Coso Geothermal Area (2003) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Single-Well and Cross-Well Resistivity Activity Date 2003 Usefulness not indicated DOE-funding Unknown Exploration Basis Fracture/stress analysis Notes A preliminary fracture/stress analysis was conducted for the recently drilled well 38C-9 as part of a continuing effort to characterize the

313

22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 1 Kinetic theory of Geodesic Acoustic  

E-Print Network (OSTI)

22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 1 Kinetic theory of Geodesic Acoustic Zonca, Liu Chen and Zhiyong Qiu #12;22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 2 Chen and Zhiyong Qiu #12;22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 3 2 Linear

Zonca, Fulvio

314

Acoustic probing of salt using sonar  

E-Print Network (OSTI)

ACOUSTIC PROBING OF SALT USING SONAR A Thesis by KENNETH BRYAN BUTLER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE Oecember 1977 Major Subject...: Geophysics ACOUSTIC PROBING OF SALT USING SONAR A Thesis by KENNETH BRYAN BUTLER Approved as to style and content by: C airman of Com ttee ea of e r nt em er ember December 1977 ABSTRACT Acoustic Probing of Salt Using Sonar. (December 1977...

Butler, Kenneth Bryan

2012-06-07T23:59:59.000Z

315

Category:Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Downhole Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Downhole Techniques page? For detailed information on Downhole Techniques as exploration techniques, click here. Category:Downhole Techniques Add.png Add a new Downhole Techniques Technique Subcategories This category has the following 5 subcategories, out of 5 total. B [×] Borehole Seismic Techniques‎ 2 pages F [×] Formation Testing Techniques‎ O [×] Open-Hole Techniques‎ W [×] Well Log Techniques‎ 17 pages [×] Well Testing Techniques‎ 8 pages

316

A model of forensic analysis using goal-oriented logging  

E-Print Network (OSTI)

A Toward Forensic Models . . . . . . . . . . . . . . . .of Forensic Analysis . . . . . . . . . . . . . . . .150 3. Applying Forensic Techniques to Intrusion

Peisert, Sean Philip

2007-01-01T23:59:59.000Z

317

Study on acoustics for SSC measurements Using the acoustic Doppler current profiler (ADCP) to  

E-Print Network (OSTI)

................................................................................................................................. 1 2. Background of higher- frequency, acoustic backscatterance sensors (ABS, for a review see Thorne and Hanes, 2002), and optical backscatterance sensors (OBS), whose sample ranges ar

Voulgaris, George

318

E-Print Network 3.0 - acoustic environments prediction Sample...  

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

Introduction The Acoustic Oceanographic Buoy... (AOB) is a light acoustic receiving device that incorporates acoustic and ... Source: Jesus, Srgio M. - Departamento de...

319

E-Print Network 3.0 - acoustic energy-driven fluid Sample Search...  

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

search results for: acoustic energy-driven fluid Page: << < 1 2 3 4 5 > >> 1 Acoustic Identification of Unknown Fluids Summary: Acoustic Identification of Unknown Fluids...

320

E-Print Network 3.0 - acoustic field evaluation Sample Search...  

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

nanoparticles using bulk acoustic waves Bart Raeymaekers,a Summary: nanoparticles a one dimensional acoustic field and b two-dimensional acoustic field. 014317-2 Raeymaekers......

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Building Energy Software Tools Directory: Acoustics Program  

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

Acoustics Program Acoustics Program Developed to help designers accurately model the sound level reaching building tenant's ears, the Trane Acoustics Program (TAP) "projects" equipment sound power data through the surroundings (e.g., floors, ductwork, walls), to estimate the sound level that will be heard. Industry-standard calculations published by ASHRAE's 1991 Algorithms for HVAC Acoustics handbook are the basis for this estimate. In TAP, you can model the conditions of an HVAC system by choosing specific equipment and building component criteria. TAP will analyze the sound path and calculate the total effect for the enclosed space. You can continuously adjust the data and system design criteria to compare the results effortlessly. TAP will even plot presentation quality graphs of

322

Surface acoustic wave dust deposition monitor  

DOE Patents (OSTI)

A system is disclosed for using the attenuation of surface acoustic waves to monitor real time dust deposition rates on surfaces. The system includes a signal generator, a tone-burst generator/amplifier connected to a transmitting transducer for converting electrical signals into acoustic waves. These waves are transmitted through a path defining means adjacent to a layer of dust and then, in turn, transmitted to a receiving transducer for changing the attenuated acoustic wave to electrical signals. The signals representing the attenuated acoustic waves may be amplified and used in a means for analyzing the output signals to produce an output indicative of the dust deposition rates and/or values of dust in the layer. 8 figs.

Fasching, G.E.; Smith, N.S. Jr.

1988-02-12T23:59:59.000Z

323

Tiltrotor Acoustic Flight Test: Terminal Area Operations  

Science Journals Connector (OSTI)

This paper provides a comprehensive description of an acoustic flight test of the XV-15 Tiltrotor Aircraft with Advanced Technology Blades (ATB) conducted in August and September 1991 at Crows Landing, California. The purpose of this cooperative research ...

Maria O. L. Santa; Wellman J. B.; Conner D. A.; Rutledge C. K.

1992-06-01T23:59:59.000Z

324

Three-Dimensional Nonlinear Acoustical Holography  

E-Print Network (OSTI)

is validated by conducting an experiment with a compression driver and four numerical simulations. The numerical and experimental results show that holographically-projected acoustic fields match well with directly-calculated and directly-measured fields....

Niu, Yaying

2013-05-06T23:59:59.000Z

325

On observing acoustic backscattering from salinity turbulence  

Science Journals Connector (OSTI)

It has been hypothesized that at sufficiently high levels of oceanic salinity turbulence it should be possible to observe acoustic backscattering. However there have been limited in situmeasurements to confirm this hypothesis. Using an autonomous underwater vehicle equipped with upward and downward looking 1.2 MHz acoustic Doppler current profilers and with turbulence and fine scale sensors measurements were performed in a region of intense turbulence and a strong salinity gradient. The approach taken was to correlate variations in the backscattered acoustic intensity I with a theoretical acoustic backscattering cross section per volume for salinity turbulence ? s to obtain an estimated scattering cross section per volume ? e . Results indicated that of order 50% of the observed region was characterized by salinity turbulence induced backscattering.

Louis Goodman; Marcos M. Sastre-Crdova

2011-01-01T23:59:59.000Z

326

Multipurpose Acoustic Sensor for Downhole Fluid Monitoring  

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

Novel sensor design based on acoustics. Determine in real-timeand in a single sensor packagemultiple parameters: temperature, pressure, fluid flow; and fluid properties, such as density, viscosity, fluid composition.

327

Subsurface Glider Localization Using Broadband Acoustic Sources  

E-Print Network (OSTI)

Researcher, ORE Abstract Ocean gliders are low-power, buoyancy-driven, autonomous underwater vehicles inherent in broadband ocean acoustic tomography signals, this uncertainty can be reduced by 1-2 orders

Frandsen, Jannette B.

328

Method and apparatus for logging short radius horizontal drainholes  

SciTech Connect

This patent describes an apparatus for use in logging a short radius horizontal drainhole. It comprises: a tubing string having a low portion; the lower portion of the tubing string including sensor support means therein; the lower portion of the tubing string containing openings communicating with the interior thereof in the vicinity of the sensor support means to thereby exposed the interior to the pressure and temperature conditions of the horizontal drainhole; and the lower portion of the tubing string including an end portion extending transversely of the tubing sting.

Taylor, D.E.

1991-04-30T23:59:59.000Z

329

Tsallis Distribution Decorated With Log-Periodic Oscillation  

E-Print Network (OSTI)

In many situations, in all branches of physics, one encounters power-like behavior of some variables which are best described by a Tsallis distribution characterized by a nonextensivity parameter $q$ and scale parameter $T$. However, there exist experimental results which can be described only by a Tsallis distributions which are additionally decorated by some log-periodic oscillating factor. We argue that such a factor can originate from allowing for a complex nonextensivity parameter $q$. The possible information conveyed by such an approach (like the occurrence of complex heat capacity, the notion of complex probability or complex multiplicative noise) will also be discussed.

Wilk, Grzegorz

2015-01-01T23:59:59.000Z

330

Tsallis Distribution Decorated With Log-Periodic Oscillation  

E-Print Network (OSTI)

In many situations, in all branches of physics, one encounters power-like behavior of some variables which are best described by a Tsallis distribution characterized by a nonextensivity parameter $q$ and scale parameter $T$. However, there exist experimental results which can be described only by a Tsallis distributions which are additionally decorated by some log-periodic oscillating factor. We argue that such a factor can originate from allowing for a complex nonextensivity parameter $q$. The possible information conveyed by such an approach (like the occurrence of complex heat capacity, the notion of complex probability or complex multiplicative noise) will also be discussed.

Grzegorz Wilk; Zbigniew Wlodarczyk

2015-01-12T23:59:59.000Z

331

Borehole Calibration Facilities to Support Gamma Logging for Hanford Subsurface Investigation and Contaminant Monitoring - 13516  

SciTech Connect

Repeated gamma logging in cased holes represents a cost-effective means to monitor gamma-emitting contamination in the deep vadose zone over time. Careful calibration and standardization of gamma log results are required to track changes and to compare results over time from different detectors and logging systems. This paper provides a summary description of Hanford facilities currently available for calibration of logging equipment. Ideally, all logging organizations conducting borehole gamma measurements at the Hanford Site will take advantage of these facilities to produce standardized and comparable results. (authors)

McCain, R.G.; Henwood, P.D.; Pope, A.D.; Pearson, A.W. [S M Stoller Corporation, 2439 Robertson Drive, Richland, WA 99354 (United States)] [S M Stoller Corporation, 2439 Robertson Drive, Richland, WA 99354 (United States)

2013-07-01T23:59:59.000Z

332

Magneto?Acoustic Interaction in Mercury  

Science Journals Connector (OSTI)

The magnetically induced acoustic absorption coefficient in liquidmercury has been measured around its inverse relaxation frequency using an on?line computer and magnetic fields of up to 10 kg. The hybrid computer?operated differential measuring system took between 2560 and 25 600 experiments per run. The results agree with Anderson's predictions [J. Acoust. Soc. Amer. 25 529 (1953)]. [Work supported in part by the National Science Foundation.

Thomas D. Sachs; Gregory P. Hughes

1969-01-01T23:59:59.000Z

333

Acoustic Energy Storage in Single Bubble Sonoluminescence  

E-Print Network (OSTI)

Single bubble sonoluminescence is understood in terms of a shock focusing towards the bubble center. We present a mechanism for significantly enhancing the effect of shock focusing, arising from the storage of energy in the acoustic modes of the gas. The modes with strongest coupling are not spherically symmetric. The storage of acoustic energy gives a framework for understanding how light intensities depend so strongly on ambient gases and liquids and suggests that the light intensities of successive flashes are highly correlated.

Michael P. Brenner; Sascha Hilgenfeldt; Detlef Lohse; Rodolfo R. Rosales

1996-05-07T23:59:59.000Z

334

Parametric acoustic arrays: A Bergen view.  

Science Journals Connector (OSTI)

At the University of Bergen (UoB) Norway research activity in physical acoustics started in the mid?1960s with investigations on the parametric acoustic array (PAA). The newly appointed professor in applied mathematics Sigve Tjo/tta had some years earlier been at Brown University and was inspired by the concept at a fundamental level but also wanted experimental confirmation. No previous acoustical activity existed at UoB. The PAA project was started as a master project at Department of Physics where the main activity was in nuclear high?energy and ionospheric physics. Bellin and Beyers experiment served as a model. The results provided new information on the axial and directional properties of the difference frequency wave field. Inspired by this theoretical modeling continued along with further measurements. Other nonlinear effects like acoustic streaming (boundary layer density gradient) were also investigated. In 1975 a project together with SIMRAD and Norwegian Technical University resulted in a bottom penetrating PAA later commercialized as TOPAS. Numerical modeling based on the KZK equation resulted in the Bergen Code still in use for computing nonlinear acoustic propagation problems. In later years activity at UoB has expanded to encompass linear physical acoustics of various sorts occasionally using PAA as a tool.

2009-01-01T23:59:59.000Z

335

Tunable damper for an acoustic wave guide  

DOE Patents (OSTI)

A damper for tunably damping acoustic waves in an ultrasonic waveguide is provided which may be used in a hostile environment such as a nuclear reactor. The area of the waveguide, which may be a selected size metal rod in which acoustic waves are to be damped, is wrapped, or surrounded, by a mass of stainless steel wool. The wool wrapped portion is then sandwiched between tuning plates, which may also be stainless steel, by means of clamping screws which may be adjusted to change the clamping force of the sandwiched assembly along the waveguide section. The plates are preformed along their length in a sinusoidally bent pattern with a period approximately equal to the acoustic wavelength which is to be damped. The bent pattern of the opposing plates are in phase along their length relative to their sinusoidal patterns so that as the clamping screws are tightened a bending stress is applied to the waveguide at 180/sup 0/ intervals along the damping section to oppose the acoustic wave motions in the waveguide and provide good coupling of the wool to the guide. The damper is tuned by selectively tightening the clamping screws while monitoring the amplitude of the acoustic waves launched in the waveguide. It may be selectively tuned to damp particular acoustic wave modes (torsional or extensional, for example) and/or frequencies while allowing others to pass unattenuated.

Rogers, S.C.

1982-10-21T23:59:59.000Z

336

Coal log pipeline research at the University of Missouri. Second quarterly report, April 1, 1994--June 30, 1994  

SciTech Connect

Coal log pipeline research continued. Progress is discussed in the following areas: fabrication, compaction, pipe abrasion, and machine design for the manufacture of the logs.

Liu, H.

1994-12-31T23:59:59.000Z

337

Apparatus for separating particles utilizing engineered acoustic contrast capture particles  

DOE Patents (OSTI)

An apparatus for separating particles from a medium includes a capillary defining a flow path therein that is in fluid communication with a medium source. The medium source includes engineered acoustic contrast capture particle having a predetermined acoustic contrast. The apparatus includes a vibration generator that is operable to produce at least one acoustic field within the flow path. The acoustic field produces a force potential minima for positive acoustic contrast particles and a force potential minima for negative acoustic contrast particles in the flow path and drives the engineered acoustic contrast capture particles to either the force potential minima for positive acoustic contrast particles or the force potential minima for negative acoustic contrast particles.

Kaduchak, Gregory (Los Alamos, NM); Ward, Michael D. (Los Alamos, NM)

2011-12-27T23:59:59.000Z

338

Apparatus for separating particles utilizing engineered acoustic contrast capture particles  

DOE Patents (OSTI)

An apparatus for separating particles from a medium includes a capillary defining a flow path therein that is in fluid communication with a medium source. The medium source includes engineered acoustic contrast capture particle having a predetermined acoustic contrast. The apparatus includes a vibration generator that is operable to produce at least one acoustic field within the flow path. The acoustic field produces a force potential minima for positive acoustic contrast particles and a force potential minima for negative acoustic contrast particles in the flow path and drives the engineered acoustic contrast capture particles to either the force potential minima for positive acoustic contrast particles or the force potential minima for negative acoustic contrast particles.

Kaduchak, Gregory; Ward, Michael D

2014-10-21T23:59:59.000Z

339

Appendix A Lithologic and Monitor Well Completion Logs  

Office of Legacy Management (LM)

A A Lithologic and Monitor Well Completion Logs This page intentionally left blank WELL INSTALLATION BLANK CASING: 1.25 in. Stainless Steel 0.0 to 0.35 METHOD WELL SCREEN: 1.25 in. Stainless Steel 0.35 to 3.27 DATE DEVELOPED SUMPIEND CAP: 1.25 in. Stainless Steel 3.27 to 3.58 WATER LEVEL (FT BGS) SURFACE SEAL: LOGGED BY P. McKenzie REMARKS Drillers hit water at 5 fl: well point removed. LITHOLOGIC DESCRIPTION LOCATION SHIPROCK, NM SURFACE ELEV. ( FT NGVD) 4890.00 SITE SHIPROCK TOP OF CASING (FT) 4890.00 WELL NUMBER 0602 MEAS. PT. ELEV. (FT) 4890.00 SLOT SIZE (IN) 0.125 WELL INSTALLATION INTERVAL (FT) DRILLING METHOD BLANK CASING: 1.25 in. Stainless Steel 0.0 to 0.35 METHOD WELL SCREEN: 1.25 in. Stainless Steel 0.35 to 3.27 DATE DEVELOPED SUMPIEND CAP: 1.25 in. Stainless Steel 3.27 to 3.58

340

Relationships between objective acoustic indices and acoustic comfort evaluation in nonacoustic spaces  

Science Journals Connector (OSTI)

Much attention has been paid to acoustic spaces such as concert halls and recording studios whereas research on nonacoustic buildings/spaces has been rather limited especially from the viewpoint of acoustic comfort. In this research a series of case studies has been carried out on this topic considering various spaces including shopping mall atrium spaces library reading rooms football stadia swimming spaces churches dining spaces as well as urban open public spaces. The studies focus on the relationships between objective acoustic indices such as sound pressure level and reverberation time and perceptions of acoustic comfort. The results show that the acoustic atmosphere is an important consideration in such spaces and the evaluation of acoustic comfort may vary considerably even if the objective acoustic indices are the same. It is suggested that current guidelines and technical regulations are insufficient in terms of acoustic design of these spaces and the relationships established from the case studies between objective and subjective aspects would be useful for developing further design guidelines. [Work supported partly by the British Academy.

Jian Kang

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Acoustics at University of Texas: History and current introductory course in physical acoustics.  

Science Journals Connector (OSTI)

As an academic discipline at the University of Texas acoustics began in the 1930s under C. Paul Boner in Physics and Lloyd A. Jeffress in Psychology. World War II saw Boner and many physicsgraduate students go to Harvard for war work largely in underwater acoustics. When the war ended Boner returned and founded the Defense Research Laboratory later named Applied Research Laboratories. Interest in acoustics grew in Physics during the postwar years but eventually waned in the 1950s and 1960s. Acoustical activity developed in the 1960s in the College of Engineering chiefly Electrical Engineering and Mechanical Engineering. Today physical and engineering acoustics is a strong interdisciplinary program at Texas with faculty in several departments in Engineering and still a vestige in Physics. In addition much work on speech hearing and music is done in other parts of the University. Engineering features two basic courses in physical acoustics Acoustics I and II and five specialty courses which are described in an accompanying paper. Here we concentrate on Acoustics I and II which provide an introduction to propagation reflection and transmission refraction normal modes horn theory propagation in stratified fluids absorption and dispersion waveguides directional radiation diffraction and arrays.

David T. Blackstock

2010-01-01T23:59:59.000Z

342

Inference of strata separation and gas emission paths in longwall overburden using continuous wavelet transform of well logs and geostatistical simulation  

Science Journals Connector (OSTI)

Abstract Prediction of potential methane emission pathways from various sources into active mine workings or sealed gobs from longwall overburden is important for controlling methane and for improving mining safety. The aim of this paper is to infer strata separation intervals and thus gas emission pathways from standard well log data. The proposed technique was applied to well logs acquired through the Mary Lee/Blue Creek coal seam of the Upper Pottsville Formation in the Black Warrior Basin, Alabama, using well logs from a series of boreholes aligned along a nearly linear profile. For this purpose, continuous wavelet transform (CWT) of digitized gamma well logs was performed by using Mexican hat and Morlet, as the mother wavelets, to identify potential discontinuities in the signal. Pointwise Hlder exponents (PHE) of gamma logs were also computed using the generalized quadratic variations (GQV) method to identify the location and strength of singularities of well log signals as a complementary analysis. \\{PHEs\\} and wavelet coefficients were analyzed to find the locations of singularities along the logs. Using the well logs in this study, locations of predicted singularities were used as indicators in single normal equation simulation (SNESIM) to generate equi-probable realizations of potential strata separation intervals. Horizontal and vertical variograms of realizations were then analyzed and compared with those of indicator data and training image (TI) data using the KruskalWallis test. A sum of squared differences was employed to select the most probable realization representing the locations of potential strata separations and methane flow paths. Results indicated that singularities located in well log signals reliably correlated with strata transitions or discontinuities within the strata. Geostatistical simulation of these discontinuities provided information about the location and extents of the continuous channels that may form during mining. If there is a gas source within their zone of influence, paths may develop and allow methane movement towards sealed or active gobs under pressure differentials. Knowledge gained from this research will better prepare mine operations for potential methane inflows, thus improving mine safety.

C. zgen Karacan; Ricardo A. Olea

2014-01-01T23:59:59.000Z

343

Toward a global observation and modeling system for studying the ecology of the open ocean using acoustics.  

Science Journals Connector (OSTI)

The CLIOTOP (mid?trophic automatic acoustic sampling) project and the EurOcean consortium are organizing a workshop in May 2011 in Bergen Norway. The presentation will summarize the discussions and conclusions from the workshop. The workshop will deal with the technological and modeling issues related to the mass deployment of acoustic sensors in the open ocean environment. The technological challenges that will be addressed are plans and concepts for novel platforms carrying acoustics and complementary techniques energy supply and consumption and data transfer technology. Presently acoustics cannot provide measures of the species?specific biomass of all taxa and complementary technologies and ecosystemmodels need to be tailored to the available data. The modeling part of the workshop will focus mainly on the model?data links. It will cover the topics required to design a large scale observational system and to improve the combination of models and observations through data assimilation. The use of acoustic data in marine ecosystemmodels is indeed often done in a fairly naive way typically by assuming that acoustic measurements can provide acute and precise estimates of biomass. This leads to underestimated uncertainty and potentially biased results which need to be rigorously addressed in appropriate state?space frameworks.

Nils Olav Handegard; Geir Huse; Olivier Maury; Nils Christian Stenseth

2011-01-01T23:59:59.000Z

344

Viscosity Effects in Acoustic Inductances  

Science Journals Connector (OSTI)

The linear acousticinductance and resistance of narrow circular tubes short compared to a wavelength have usually been represented by limiting formulas valid either for very low frequencies (viscous flow) or for relatively high frequencies (pistonlike displacement). Crandall's text gives a general mathematical development with particular stress on resistance but variation of inductance with frequency and viscosity has not been discussed generally nor has numerical reduction of mathematical results been generally available. The present paper describes quantitatively the dependence of inductance and resistance upon the general parameter radius times square root of the quantity density times frequency divided by viscosity. With increase of this parameter resistance increases while inductance diminishes from the static value to the limiting high frequency value. Experimental checks are made to ascertain whether resistance values are strongly affected by flow?transition end?effects found in hydraulics. Impedance?tube studies are made of five tube diameters from 0.0187 to 0.750 in. at 50 to 167 c/sec. Length/diameter is approximately 10 to render inductance end?corrections relatively small. Acoustic pressures are reduced until linear behavior appears. Measured resistance is generally within five percent of calculation as resistance increases to twice the static value. Measured inductance generally agrees with calculation within limits of the end?correction over the range of significant variation.

A. W. Nolle

1951-01-01T23:59:59.000Z

345

Method and apparatus of spectro-acoustically enhanced ultrasonic detection for diagnostics  

DOE Patents (OSTI)

An apparatus for detecting a discontinuity in a material includes a source of electromagnetic radiation has a wavelength and an intensity sufficient to induce an enhancement in contrast between a manifestation of an acoustic property in the material and of the acoustic property in the discontinuity, as compared to when the material is not irradiated by the electromagnetic radiation. An acoustic emitter directs acoustic waves to the discontinuity in the material. The acoustic waves have a sensitivity to the acoustic property. An acoustic receiver receives the acoustic waves generated by the acoustic emitter after the acoustic waves have interacted with the material and the discontinuity. The acoustic receiver also generates a signal representative of the acoustic waves received by the acoustic receiver. A processor, in communication with the acoustic receiver and responsive to the signal generated by the acoustic receiver, is programmed to generate informational output about the discontinuity based on the signal generated by the acoustic receiver.

Vo-Dinh, Tuan (Knoxville, TN); Norton, Stephen J. (Raleigh, NC)

2001-01-01T23:59:59.000Z

346

E-Print Network 3.0 - acoustically coupled oscillations Sample...  

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

Department of Mechanical Engineering PENNPENNSSTATETATE Acoustic Analysis of Gas Turbine Combustion... InstabilityAcoustic Analysis of Gas Turbine Combustion Instability ...

347

E-Print Network 3.0 - acoustically enhanced remediation Sample...  

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

PENNPENNSSTATETATE Summary: Department of Mechanical Engineering PENNPENNSSTATETATE Acoustic Analysis of Gas Turbine Combustion... InstabilityAcoustic Analysis of Gas Turbine...

348

E-Print Network 3.0 - acoustic properties Sample Search Results  

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

Department of Mechanical Engineering PENNPENNSSTATETATE Acoustic Analysis of Gas Turbine Combustion... InstabilityAcoustic Analysis of Gas Turbine Combustion Instability ...

349

E-Print Network 3.0 - acoustic wave chemical Sample Search Results  

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

Lyle N.- Department of Aerospace Engineering, Pennsylvania State University Collection: Engineering 8 Acoustic Identification of Unknown Fluids Summary: Acoustic Identification...

350

Acoustic condition monitoring of wind turbines: Tip faults  

Science Journals Connector (OSTI)

As a significant and growing source of the worlds energy wind turbine reliability is becoming a major concern. At least two fault detection techniques for condition monitoring of wind turbine blades have been reported in early literature i.e. acoustic emissions and optical strain sensors. These require off-site measurement. The work presented here offers an alternative non-contact fault detection method based on the noise emission from the turbine during operation. An investigation has been carried out on a micro wind turbine under laboratory conditions. 4 severity levels for a fault have been planted in the form of added weight at the tip of one blade to simulate inhomogeneous debris or ice build up. Acoustic data is obtained at a single microphone placed in front of the rotor. Two prediction methods have been developed and tested on real data: one based on a single feature - rotational frequency spectral magnitude; and another based on a fuzzy logic interference using two inputs - spectral peak and rotational peak variation with time. Results show that the single spectral peak feature can be used to determine fault severity in ranges. The implementation of the fuzzy logic using a further input feature is shown to significantly improve the detection accuracy.

Daniel J. Comboni; Bruno Fazenda

2012-01-01T23:59:59.000Z

351

Tests show production logging problems in horizontal gas wells  

SciTech Connect

A study has concluded that production logging tools employed to evaluate multiphase horizontal well production behavior should be carefully screened as to their response characteristics in fully-segregated, two-phase flow. The study, performed at Marathon Oil Co.'s petroleum technology center in Littleton, Colo., indicated that gas in highly deviated well bores segregates rapidly in the presence of water, creating a downhole environment that produces sporadic responses from full bore and diverter spinners as well as density and holdup tools. Gas Research Institute (GRI), as part of its horizontal gas well completion technology program, initiated the full-scale laboratory study to determine the severity and consequences of multiphase flow on tool response from horizontal well production. The paper discusses background of the problem, the test objectives, test facility, experimental procedures, single-phase flow, two-phase flow, and recommendations.

Branagan, P. (Branagan and Associates, Las Vegas, NV (United States)); Knight, B.L. (Marathon Oil Co., Littleton, CO (United States)); Aslakson, J. (Gas Research Inst., Chicago, IL (United States)); Middlebrook, M.L. (CER Corp., Las Vegas, NV (United States))

1994-01-10T23:59:59.000Z

352

Acoustic demonstrations for education in speech science  

Science Journals Connector (OSTI)

Acoustic demonstrations are highly effective for education in speech science. We recently developed two educational tools for acoustics. The first educational tool is a set of physical models of the human vocal tract and related models. It contains cylinder and plate?type models [T. Arai J. Phonetic Soc. Jpn. 5(2) 3138 (2001)] a sliding three?tube model [T. Arai Acoust. Sci. Technol. to be published] lungmodels an artificial larynx and head?shaped models [T. Arai Acoust. Sci. Technol. 27(2) 111113 (2006)]. Each model has its own advantages and if combined effectively can produce a systematic and comprehensive education in speech production from the lungs to the head. The second educational tool is Digital Pattern Playback (DPP) [T. Arai et al. Acoust. Sci. Tech. to be published] which converts a spectrographic image of a speech signal back to sound by digital signal processing. A printed spectrogram on a sheet of paper can also be converted immediately after capturing the image from a camera and we confirmed that this is more intuitive for learners than converting from an electronic image. [Work partially supported by JSPS.KAKENHI (17500603).

2006-01-01T23:59:59.000Z

353

History of American acousticsIntroductory comments  

Science Journals Connector (OSTI)

The history of acoustics has been illuminated by the efforts in recent years of R. Bruce Lindsay and so this Bicentennial Session is being held in his honor. In addition certain numerological factors spurred our efforts in this Bicentennial Year 1976. It was just one hundred years ago that A. G. Bell's inventionthe first practical telephonewas exhibited at the 1876 Centennial Exposition in Philadelphia. A year later in 1877 the first edition of Rayleigh's Theory of Sound appeared. The conjunction of these two events eventually had a powerful influence on the development of acoustics. The invited speakers will in the papers which follow endeavor to describe all of the significant advances made by Americans to technical acoustics. Apparently it all began with Joseph Henry's efforts to solve a problem in auditorium acoustics. At the brink of World War II acoustics was invaded by a host of scientists and engineers. During the period 194145 and in the post war years frontiers were breached in almost every direction at such a rate that description of the advances made cannot be done here. And so most of our speakers will bring their histories up only to about the year 1940.

Richard K. Cook

1976-01-01T23:59:59.000Z

354

Synthetic aperture focusing techniques for ultrasonic imaging of solid objects.  

E-Print Network (OSTI)

technique (SAFT) has been used in non-destructive testing mainly in its simplest form that mimics acoustic a review of SAFT algorithms applied for post-processing of ultrasonic data acquired in non-destructive inspection of metals. The performance of SAFT in terms of its spatial resolution and suppression

355

Coal log pipeline research at the University of Missouri. 2nd quarterly report, April 4, 1995--June 30, 1995  

SciTech Connect

This report describes the accomplishments in coal log pipeline research and manufacturing. Flow results are included.

Liu, H.

1995-12-01T23:59:59.000Z

356

Acoustic measurement of the Deepwater Horizon Macondo well flow rate  

E-Print Network (OSTI)

On May 31, 2010, a direct acoustic measurement method was used to quantify fluid leakage rate from the Deepwater Horizon Macondo well prior to removal of its broken riser. This method utilized an acoustic imaging sonar and ...

Camilli, Richard

357

Spatiotemporal processing and time-reversal for underwater acoustic communications  

E-Print Network (OSTI)

High-rate underwater acoustic communication can be achieved using transmitter/receiver arrays. Underwater acoustic channels can be characterized as rapidly time-varying systems that suffer severe Inter Symbol Interferences ...

Wang, Daniel Y

2005-01-01T23:59:59.000Z

358

13.853 Computational Ocean Acoustics, Spring 2003  

E-Print Network (OSTI)

Wave equations for fluid and visco-elastic media. Wave-theory formulations of acoustic source radiation and seismo-acoustic propagation in stratified ocean waveguides. Wavenumber Integration and Normal Mode methods for ...

Schmidt, Henrik

359

Achieving acoustical satisfaction in a green building  

Science Journals Connector (OSTI)

The Carnegie Institutions Global Ecology Research Center at Stanford University has garnered many accolades including the AIAs Excellence in SustainabilityAward. This building incorporates many green and energy?saving design features mechanical systems and materials. The occupants of this facility have given it high marks in U.C. Berkeleys Center for the Built Environments (CBE) survey of buildings. Staff at the Global Ecology Research Center are shown to be more satisfied with their acoustical environment than occupants of other green buildings surveyed by CBE. Measured acoustical data for speech privacy in open plan and enclosed conference rooms will be presented along with descriptions of acoustical design attributes for the building.

2006-01-01T23:59:59.000Z

360

Acoustical design issues for library facility planners  

Science Journals Connector (OSTI)

Acting under the provisions of the Library Services and Technology Act the U.S. Institute of Museum and Library Services retained Charles M. Salter Associates Inc. to provide a document explaining acoustical and audio/visual requirements for libraries to library planners architects and lay people. Acoustical design issues for libraries discussed on the website include site noise considerations noise standards for each use space room acoustics considerations sound isolation between various use spaces vibration control for mechanical equipment and audio/visual system considerations. The completed document forms a part of the Libris Design library facility planning information system which includes a website with recent information on facility planning topics and a database of recently constructed California public libraries.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Developing criteria for identifying acoustical defects  

Science Journals Connector (OSTI)

In a construction defect lawsuit of a multifamily residential project the determination of whether a defect exists often hinges on the criteria applied. For many acoustical items such as plumbing and HVAC noise there are no code requirements but a number of guidelines and recommendations. For items such as noise from traffic or airborne and impact sound isolation between units minimum code requirements exist but often a more stringent standard is applied. How does an expert decide when it is appropriate to apply an acoustical standard that is beyond that required by building codes? Project drawings marketing materials homeowner regulations and other documents can provide indications of the intent and promise of the project as it relates to acoustical issues. The process is discussed with examples from recent cases.

John LoVerde; David W. Dong

2013-01-01T23:59:59.000Z

362

Active micromixer using surface acoustic wave streaming  

DOE Patents (OSTI)

An active micromixer uses a surface acoustic wave, preferably a Rayleigh wave, propagating on a piezoelectric substrate to induce acoustic streaming in a fluid in a microfluidic channel. The surface acoustic wave can be generated by applying an RF excitation signal to at least one interdigital transducer on the piezoelectric substrate. The active micromixer can rapidly mix quiescent fluids or laminar streams in low Reynolds number flows. The active micromixer has no moving parts (other than the SAW transducer) and is, therefore, more reliable, less damaging to sensitive fluids, and less susceptible to fouling and channel clogging than other types of active and passive micromixers. The active micromixer is adaptable to a wide range of geometries, can be easily fabricated, and can be integrated in a microfluidic system, reducing dead volume. Finally, the active micromixer has on-demand on/off mixing capability and can be operated at low power.

Branch; Darren W. (Albuquerque, NM), Meyer; Grant D. (Ithaca, NY), Craighead; Harold G. (Ithaca, NY)

2011-05-17T23:59:59.000Z

363

Forward Modeling of the Induction Log Response of a Fractured Geologic Formation  

E-Print Network (OSTI)

3.1 Layered Earth Model The environment used for the induction log simulations is a layered Earth model. The model consists of six layers that are assigned different thicknesses and conductivities based on the desired induction log... Tx-Rx pair has a fixed separation and is moved along a vertical profile through the subsurface taking measurements at predetermined logging points. 20 The second change to the original Seatem code involves the surrounding environment. The code...

Bray, Steven Hunter

2013-05-02T23:59:59.000Z

364

Density Log at Fish Lake Valley Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

Fish Lake Valley Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Density Log at Fish Lake Valley Area (DOE GTP) Exploration...

365

E-Print Network 3.0 - advanced logging workshop Sample Search...  

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

ability to corrupt the log 12;les. We describe a ... Source: Schneier, Bruce - BT Group plc Collection: Computer Technologies and Information Sciences 22 Summary Workshop Report...

366

Neutron Log At Silver Peak Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Neutron Log Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Additional References Retrieved from "http:en.openei.org...

367

Temperatures and Natural Gamma-Ray Logs Obtained in 1986 from...  

Open Energy Info (EERE)

Changes in temperature logs run in July and September appear to result from fluid loss to the formation during and following drilling and possibly to ground shaking...

368

Density Log at Fort Bliss Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Fort Bliss Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Density Log at Fort Bliss Area (DOE GTP) Exploration Activity Details...

369

Numerical Modeling of Acoustic Timescale Detonation J.D. Regele  

E-Print Network (OSTI)

Numerical Modeling of Acoustic Timescale Detonation Initiation J.D. Regele , D.R. Kassoy and O to perform one and two-dimensional simulations of acoustic timescale detonation initiation using thermal overdriven detonation wave that decays to a steady-state CJ wave. A 1-D parametric study of acoustic

Vasilyev, Oleg V.

370

Support minimized inversion of acoustic and elastic wave scattering  

SciTech Connect

This report discusses the following topics on support minimized inversion of acoustic and elastic wave scattering: Minimum support inversion; forward modelling of elastodynamic wave scattering; minimum support linearized acoustic inversion; support minimized nonlinear acoustic inversion without absolute phase; and support minimized nonlinear elastic inversion.

Safaeinili, A.

1994-04-24T23:59:59.000Z

371

The Impact of Civil Rights Legislation on Classroom Acoustics  

E-Print Network (OSTI)

.................................................................................................................... 30 v Abbreviations ADA American with Disabilities Act ADAAG Americans With Disabilities Act Accessibility Guidelines ANSI American National Standards Institute ARI Air-Conditioning and Refrigeration Institute ASA Acoustical... classroom acoustics standards for subsequent inclusion in the Americans With Disabilities Act Access Guidelines (ADAAG), and to reference classroom acoustics in the International Building Code (IBC). However, opposition from the modular classroom and HVAC...

Teel, Jeffrey

2005-12-16T23:59:59.000Z

372

Measuring baryon acoustic oscillations with future SKA surveys  

E-Print Network (OSTI)

The imprint of baryon acoustic oscillations (BAO) in large-scale structure can be used as a standard ruler for mapping out the cosmic expansion history, and hence for testing cosmological models. In this article we briefly describe the scientific background to the BAO technique, and forecast the potential of the Phase 1 and 2 SKA telescopes to perform BAO surveys using both galaxy catalogues and intensity mapping, assessing their competitiveness with current and future optical galaxy surveys. We find that a 25,000 sq. deg. intensity mapping survey on a Phase 1 array will preferentially constrain the radial BAO, providing a highly competitive 2% constraint on the expansion rate at z ~ 2. A 30,000 sq. deg. galaxy redshift survey on SKA2 will outperform all other planned experiments for z < 1.4.

Bull, Philip; Raccanelli, Alvise; Blake, Chris; Ferreira, Pedro G; Santos, Mario G; Schwarz, Dominik J

2015-01-01T23:59:59.000Z

373

Acoustic characteristics of clearly spoken English fricatives  

E-Print Network (OSTI)

Acoustic characteristics of clearly spoken English fricatives renc n Fr cept em exam s to aref fric ed b gram wn effe e co h w by effo y an and 21/1 Deliberately clarified speech has been seen to yield intelligi- 2003; Krause and Braida, 2004... situations.3962 J. Acoust. Soc. Am. 125 #2;6#1;, June 2009 0001-4966/2009/12 ution subject to ASA license or copyright; see http://acousticalsociety.org/ce, Kansas 66044 ancisco, California 94104 ed 1 September 2008#2; to be understood more easily...

Maniwa, Kazumi; Jongman, Allard

2009-06-01T23:59:59.000Z

374

Numerical prediction of interaction between combustion, acoustics and vibration in gas turbines  

Science Journals Connector (OSTI)

The turbulent flame in the lean combustion regime in a gas turbine combustor generates significant thermo?acoustic instabilities. The flame can amplify fluctuations in the released heat and thus in the acoustic field as well. The induced pressure oscillations will drive vibrations of the combustor walls and burner parts. Stronger fluctuating pressure results in stronger fluctuations in the wall structure. Due to fatigue the remaining life time of the hard ware will be reduced significantly. This paper investigates modeling of acoustic oscillations and mechanical vibrations induced by lean premixed natural gascombustion. The mutual interaction of the combustion processes induced oscillating pressure field in the combustion chamber and induced vibration of the liner walls are investigated with numerical techniques. A partitioned procedure is used here: CFX?10 for the CFD analysis and Ansys?10 for the CSD analysis are coupled to give insight into a correlation between acoustic pressure oscillations and liner vibrations. These results will be compared with the available experimental data. The data are gathered in a purpose built 500 kW/5 bar premixed natural gas test rig.

Artur Pozarlik; Jim B. Kok

2008-01-01T23:59:59.000Z

375

Experimental observation of acoustic sub-harmonic diffraction by a grating  

SciTech Connect

A diffraction grating is a spatial filter causing sound waves or optical waves to reflect in directions determined by the frequency of the waves and the period of the grating. The classical grating equation is the governing principle that has successfully described the diffraction phenomena caused by gratings. However, in this work, we show experimental observation of the so-called sub-harmonic diffraction in acoustics that cannot be explained by the classical grating equation. Experiments indicate two physical phenomena causing the effect: internal scattering effects within the corrugation causing a phase shift and nonlinear acoustic effects generating new frequencies. This discovery expands our current understanding of the diffraction phenomenon, and it also makes it possible to better design spatial diffraction spectra, such as a rainbow effect in optics with a more complicated color spectrum than a traditional rainbow. The discovery reveals also a possibly new technique to study nonlinear acoustics by exploitation of the natural spatial filtering effect inherent to an acoustic diffraction grating.

Liu, Jingfei, E-mail: benjamin.jf.liu@gatech.edu; Declercq, Nico F., E-mail: declercqdepatin@gatech.edu [Laboratory for Ultrasonic Nondestructive Evaluation LUNE, Georgia Tech Lorraine, Georgia Tech-CNRS UMI2958, Georgia Institute of Technology, 2, rue Marconi, Metz 57070 (France)

2014-06-28T23:59:59.000Z

376

Definition: Active Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Seismic Techniques Seismic Techniques Jump to: navigation, search Dictionary.png Active Seismic Techniques Active seismic techniques study the behavior of artificially-generated elastic waves in the subsurface. A seismic wave or pulse is generated at the surface by an active seismic source which can be a vibration, mechanical impact, or near-surface explosion.[1] View on Wikipedia Wikipedia Definition Seismic waves are waves of energy that travel through the Earth's layers, and are a result of an earthquake, explosion, or a volcano that imparts low-frequency acoustic energy. Many other natural and anthropogenic sources create low amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seismologists. Seismic wave fields are recorded by a seismometer,

377

Acoustically enhanced remediation, Phase 2: Technology scaling  

SciTech Connect

Weiss Associates is conducting the following three phase program investigating the in-situ application of acoustically enhanced remediation (AER) of contaminated unconsolidated soil and ground water under both saturated and unsaturated conditions: Phase I-- laboratory scale parametric investigation; Phase II--technology Scaling; and Phase III--large scale field tests. AER addresses the need for NAPL (either lighter or denser than water: LNAPL or DNAPL, respectively) in high and low permeability sediments, and the remediation of other types of subsurface contaminants (e.g., metals, radionuclides) in low permeability soils. This program has been placed in the U.S. Department of Energy`s (DOE`s) DNAPL product. Phase I indicated that AER could be used to effectively remediate NAPL in high permeability soil, and that removal of NAPL from low permeability soil could be increased since the water flux through these soils was significantly increased. Phase II, Technology Scaling, the subject of this paper, focused on (1) evaluating the characteristics of an AER field deployment system, (2) developing DNAPL flow and transport performance data under acoustic excitation, (3) predicting the effect of acoustic remediation in three-dimensional unconsolidated hydrogeologic conditions, (4) conducting an engineering analysis of acoustical sources, and (5) identifying candidate field site(s) for large-scale field testing of the technology.

Iovenitti, J.L.; Hill, D.G. [Weiss Associates, Emeryville, CA (United States); Rynne, T.M.; Spadaro, J.F.; Hutchinson, W. [Scientific Applications and Research Associates, Inc., Huntington Beach, CA (United States); Illangasakere, T. [Colorado Univ., Boulder, CO (United States). Dept. of Civil, Environmental, and Architectural Engineering

1996-12-31T23:59:59.000Z

378

Thermoacoustic Stirling Engine --An acoustic amplifier  

E-Print Network (OSTI)

National Laboratory Condensed Matter and Thermal Physics Group MS K764, Los Alamos, NM 87545 backhaus) efficiencies 6" 24 " 72 " Acoustic power: 100 W 1 kW 50 kW T.A. efficiency: 23% 30% 25% All-metal bonded PZT stacks Metal joints, rather than epoxy joints, between PZT elements allow stacks to generate high power

Lee, Dongwon

379

New acoustic devices for breathing investigations  

Science Journals Connector (OSTI)

The problem of spirometry control in medicine and medical engineering still remains urgent. The necessity of getting more and more information from spirometry investigations imposes more and more stringent requirements for spirometers, volumeters and ... Keywords: acoustic waves propagation, air-gas velocity, breathing, flow rate, measurement, moving in channel media, spiroanalyser

Semyon Shkundin

2009-08-01T23:59:59.000Z

380

Acoustics of modular constructionIndustry overview  

Science Journals Connector (OSTI)

This session will provide an overview of the issues and efforts impacting the commercial modular construction industry throughout North America with particular focus on acoustics in relocatable classrooms. The Modular Building Institute is the international nonprofit trade association representing manufacturers and dealers of commercial modular facilites both temporary and permanent serving educational health care retail industrial military and multi?family markets.

Thomas E. Hardiman

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Ocean Climate Change: Comparison of Acoustic  

E-Print Network (OSTI)

Ocean Climate Change: Comparison of Acoustic Tomography, Satellite Altimetry, and Modeling The ATOC to thermal expansion. Interpreting climate change signals from fluctuations in sea level is therefore in the advective heat flux. Changes in oceanic heat storage are a major expected element of future climate shifts

Frandsen, Jannette B.

382

Acoustic-emission monitoring during hydraulic fracturing  

SciTech Connect

This paper reports that microseismic events or acoustic emissions associated with hydraulic fracturing are recorded with a borehole seismic tool in a deviated well during multirate injection, shut-in, and flowback. The event locations indicate that fracture orientation, length, and height are compatible with regional stress directions and estimates of the fracture size that are based on pressure decline.

Stewart, L. (Schlumberger-Doll Research (US)); Cassell, B.R. (Schlumberger Wireline Services (US)); Bol, G.M. (Nederlanse Aardolie Mij. B.V. (NL))

1992-06-01T23:59:59.000Z

383

Research equipment: Surface Acoustic Wave (SAW) devices  

E-Print Network (OSTI)

of the acoustic wave. More specifically, the equipment consists of: i. HP 4195A (10Hz-500MHz) ii. HP 8753ES (30kHz measurements on many SAW devices iii. Agilent E5061A (300kHz-1.5GHz) http Scientific Corp.): Atmospheric plasma etching, for surface cleaning, surface treatment and activation

Gizeli, Electra

384

Title Slide "The broadband acoustic output of  

E-Print Network (OSTI)

Title Slide "The broadband acoustic output of marine seismic airgun sources" Les Hatton CISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . #12;Seismic sources ­ marine airguns Introduction Modelling Marine Life Impact Where next Overview #12 Normal speed surface movie of airgun firing Courtesy IO limited #12;Seismic sources ­ marine airguns

Hatton, Les

385

Condition Monitoring and Management from Acoustic  

E-Print Network (OSTI)

is about condition monitoring of large diesel engines from acoustic emission signals. The experiments have been focused on a specific and severe fault called scuffing. The fault is generally assumed to arise of this work is the analysis of the angular position changes of the engine related events such as fuel

386

Acoustic Lexemes for Organizing Internet Audio  

E-Print Network (OSTI)

Acoustic Lexemes for Organizing Internet Audio Michael A. Casey In this article, a method is proposed for automatic fine-scale audio description that draws inspiration from ontological sound automation of audio description at the level of sound objects for indexing and retrieving sound segments

Casey, Michael

387

ElectroAcoustical HansGerd Berns  

E-Print Network (OSTI)

. DUMAND will be deployed at 4800 m depth in the Pacific Ocean approximately 25 km off the west coast at DUMAND Site : : : : : : : : : : : : : : : : : : : : 46 6.4 First Acoustical Survey Operations at DUMAND : : : : : : : : : : : : : : : 50 7.2 Transducer: ITC­3217 Modified : : : : : : : : : : : : : : : : : : : : 51 7.3 Power Amplifier

Berns, Hans-Gerd

388

Upgrading secret military facilitiesWhat is more important, acoustic design standards or acoustical performance?  

Science Journals Connector (OSTI)

The U.S. Department of Defense has developed acoustical performance standards that are to be achieved in the design and construction of meeting and conference rooms where sensitive and secret information will be discussed. These performance standards rely on published acoustical industry design data which are readily available. The intention of these standards is to prevent sensitive and secret information from being heard understood or otherwise obtained by persons or devices that are not authorized to have access to such information. This paper presents design and field performance test results for new and renovated secret rooms that initially passed the acoustical design criteria and acoustical standard field tests but failed to provide the desired secret level acoustical performance. Further investigations and research into partition component and building composite performance indicated that floors walls ceilings doors windows and perimeter penetrations by conduit and HVAC ducting which individually met the design standards and when installed meet the design standards but as a composite did not provide the intended acoustical performance that would prevent unauthorized access to sensitive and secret information by persons or devices outside the designated perimeter. Reasons for certain performance failures are discussed and specific successful remedies are presented.

2013-01-01T23:59:59.000Z

389

History of proposed Acoustical Society standard on Underwater Passive Acoustic Monitoring for Bioacoustic Applications.  

Science Journals Connector (OSTI)

In 2005 an ASA working group was formed to examine whether a standard should exist for Passive Acoustic Monitoring for Marine Mammal Mitigation for Seismic Surveys. Public discussions at subsequent meetings quickly showed that no consensus existed for specifying hardware requirements for passive acoustic measurements but consensus did seem possible for specifying minimum requirements for recording and reporting bioacoustic data. The proposed standard was renamed Underwater Passive Acoustic Monitoring for Bioacoustic Applications with three defined goals: (1) providing a set of requirements for information to be documented while recording acoustic data at sea (metadata requirements); (2) detailing the minimum information about acoustic hardware and software to be included when reporting results in gray or peer?reviewed literature; and (3) specifying metrics to be used when summarizing the features of an acoustic signal such as signal?to?noise ratio. A set of recommended best?practice procedures and equipment capabilities would also be included as an informative annex. After languishing for several years an attempt is being made to develop the standard further. This presentation describes the ASA standard outlines the development process and sketches the current thinking on the standard with an emphasis on the metrics portion.

Aaron Thode; David K. Mellinger

2010-01-01T23:59:59.000Z

390

Social Network Discovery from Multiple Log Data through a Behavior Model  

Science Journals Connector (OSTI)

This paper proposes a new framework for inferring social networks of smart phone users from log data on web browsing and mobile application execution. In the framework, a behavior model is built by taking into account the effects of homophily, other ... Keywords: social network, log analysis, behavior model

Tomonobu Ozaki; Minoru Etoh

2012-03-01T23:59:59.000Z

391

Department of Industrial & Manufacturing Engineering Spring 2011 Log Splitter Tank Quality Improvement  

E-Print Network (OSTI)

PENNSTATE Department of Industrial & Manufacturing Engineering Spring 2011 Log Splitter Tank around a central hydraulic tank which acts as the base of the log splitter. The tanks can leak due to poor weld integrity, further aggravated by stresses on the tank during towing. Also, internal rust

Demirel, Melik C.

392

Synthesis of class-AB log-domain filters based on nonlinear transconductance  

Science Journals Connector (OSTI)

In this paper a new generalized method for synthesis of class-AB current-mode log-domain filters, using nonlinear transconductance cell, is presented. The proposed nonlinear transconductance cell is designed by employing floating-gate MOS (FG-MOS) transistors ... Keywords: Class-AB, Current splitter, Current-mode, Filter, Log-domain, Transconductance

E. Farshidi

2010-05-01T23:59:59.000Z

393

Integration of Geology, Rock-Physics, Logs, and Pre-stack Seismic for Reservoir Porosity Estimation  

E-Print Network (OSTI)

The main objective of this paper is to obtain reservoir properties, such as porosity, both at the well locations and in the inter-well regions from seismic data and well logs. The seismic and well-log datasets are from an ...

Al Muhaidib, Abdulaziz

2011-01-01T23:59:59.000Z

394

SIMULATION OF RESISTIVITY LOGGING-WHILE-DRILLING (LWD) MEASUREMENTS USING A SELF-ADAPTIVE  

E-Print Network (OSTI)

the electromagnetic response of geophysical resistivity logging instruments in a borehole environment in a borehole environment. The measurements are used to assess electrical properties of rock formations. Logging (see, for example, [7, 18] and references therein) to accurately solve a large class of engineering

Torres-Verdín, Carlos

395

The broad-band fractal nature of heterogeneity in the upper crust from petrophysical logs  

Science Journals Connector (OSTI)

......1991. Deep borehole log evidence for...heterogeneity and large-scale velocity...Continental Deep-Drilling (KTB) Holes...results, for the borehole data, show broad-band...spectral scaling in borehole logs, Geophys...23, 31193122. large-scale velocity......

Sean S. Dolan; Christopher J. Bean; Bruno Riollet

1998-03-01T23:59:59.000Z

396

Impact of assumption of log-normal distribution on monthly rainfall estimation from TMI  

E-Print Network (OSTI)

The log-normal assumption for the distribution of the rain rates used for the estimation of monthly rain totals proposed in Wilheit et al 1991 was examined. Since the log-normal assumption was originally used for the SSM/I, it is now necessary to re...

Lee, Dong Heon

2012-06-07T23:59:59.000Z

397

Weekly Security Incident Log Period of Nov 27 -Dec 2, 2012  

E-Print Network (OSTI)

was obtained. 11/28/2012 01:41 PM Suspicious Person 2012-002119 ROSS BUILDING - NORTH TOWER Private PropertyWeekly Security Incident Log Period of Nov 27 - Dec 2, 2012 Incident No. Reported Date Building:41 AM Theft, Under Weekly Security Incident Log Printed: 12/3/2012 3:18:11 PM 1 Period of Nov 27 - Dec 2

398

Vote Selling, Voter Anonymity, and Forensic Logging of Electronic Voting Machines  

E-Print Network (OSTI)

Vote Selling, Voter Anonymity, and Forensic Logging of Electronic Voting Machines Sean Peisert,bishop}@cs.ucdavis.edu Alec Yasinsac School of Computer and Information Sciences University of South Alabama yasinsac of electronic voting machines---forensic log­ ging and auditing---that, in concert with other el­ ements

Bishop, Matt

399

Vote Selling, Voter Anonymity, and Forensic Logging of Electronic Voting Machines  

E-Print Network (OSTI)

Vote Selling, Voter Anonymity, and Forensic Logging of Electronic Voting Machines Sean Peisert,bishop}@cs.ucdavis.edu Alec Yasinsac School of Computer and Information Sciences University of South Alabama yasinsac voting machines--forensic log- ging and auditing--that, in concert with other el- ements of the VVSG2007

Peisert, Sean

400

Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels  

E-Print Network (OSTI)

Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels Fabian provide exact expressions for both i) the joint distribution of the MLM symbol reliabilities, and ii--detection, intersymbol inteference, max-log- map, probability distribution, reliability I. INTRODUCTION The max

Kavcic, Aleksandar

Note: This page contains sample records for the topic "techniques acoustic logs" 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

A method for the frequency control in time-resolved two-dimensional gigahertz surface acoustic wave imaging  

SciTech Connect

We describe an extension of the time-resolved two-dimensional gigahertz surface acoustic wave imaging based on the optical pump-probe technique with periodic light source at a fixed repetition frequency. Usually such imaging measurement may generate and detect acoustic waves with their frequencies only at or near the integer multiples of the repetition frequency. Here we propose a method which utilizes the amplitude modulation of the excitation pulse train to modify the generation frequency free from the mentioned limitation, and allows for the first time the discrimination of the resulted upper- and lower-side-band frequency components in the detection. The validity of the method is demonstrated in a simple measurement on an isotropic glass plate covered by a metal thin film to extract the dispersion curves of the surface acoustic waves.

Kaneko, Shogo; Tomoda, Motonobu; Matsuda, Osamu, E-mail: omatsuda@eng.hokudai.ac.jp [Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628 (Japan)] [Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628 (Japan)

2014-01-15T23:59:59.000Z

402

Geophysical logging case history of the Raft River geothermal system, Idaho  

Open Energy Info (EERE)

Geophysical logging case history of the Raft River geothermal system, Idaho Geophysical logging case history of the Raft River geothermal system, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Geophysical logging case history of the Raft River geothermal system, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Drilling to evaluate the geothermal resource in the Raft River Valley began in 1974 and resulted in the discovery of a geothermal reservoir at a depth of approximately 1523 m (500 ft). Several organizations and companies have been involved in the geophysical logging program. There is no comprehensive report on the geophysical logging, nor has there been a complete interpretation. The objectives of this study are to make an integrated interpretation of the available data and compile a case history. Emphasis has been on developing a simple interpretation

403

U-039: ISC Update: BIND 9 Resolver crashes after logging an error in  

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

9: ISC Update: BIND 9 Resolver crashes after logging an error 9: ISC Update: BIND 9 Resolver crashes after logging an error in query.c U-039: ISC Update: BIND 9 Resolver crashes after logging an error in query.c November 16, 2011 - 2:30pm Addthis PROBLEM: ISC Update: BIND 9 Resolver crashes after logging an error in query.c. PLATFORM: Versions of BIND, 9.4-ESV, 9.6-ESV, 9.7.x, 9.8.x ABSTRACT: A remote server can cause the target connected client to crash. Organizations across the Internet are reporting crashes interrupting service on BIND 9 nameservers performing recursive queries. Affected servers crash after logging an error in query.c with the following message: "INSIST(! dns_rdataset_isassociated(sigrdataset))" Multiple versions are reported as being affected, including all currently supported release versions of ISC BIND 9. ISC is actively investigating the root cause and

404

Well log interpretation of certain geothermal fields in the Imperial Valley, California  

SciTech Connect

This study reviews the wireline log responses of some geothermal fields in the Imperial Valley, California. The fields under study include the Heber, the East Mesa, the Brawley, and the Westmoreland. The well logs used in the study did not include all the wireline surveys obtained by the operators. The selected well logs obtained under special arrangements with the operators were chosen to maintain the anonymity of specific well locations but are only representative of each area. Analysis of the well logs indicates that on an individual field basis, the well logs are excellent for correlation purposes. The presence of extremely saline fluids in some fields precludes the monitoring of Q/sub v/ (cation exchange capacity per unit volume) profile for detection of hydrothermally altered zones. The producing sections in all the fields are characterized by low porosity and high resistivity.

Ershaghi, I.; Abdassah, D.

1984-03-01T23:59:59.000Z

405

U-038: BIND 9 Resolver crashes after logging an error in query.c |  

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

8: BIND 9 Resolver crashes after logging an error in query.c 8: BIND 9 Resolver crashes after logging an error in query.c U-038: BIND 9 Resolver crashes after logging an error in query.c November 16, 2011 - 8:37am Addthis PROBLEM: BIND 9 Resolver crashes after logging an error in query.c. PLATFORM: Multiple version of BIND 9. Specific versions under investigation ABSTRACT: A remote server can cause the target connected client to crash. Organizations across the Internet are reporting crashes interrupting service on BIND 9 nameservers performing recursive queries. Affected servers crash after logging an error in query.c with the following message: "INSIST(! dns_rdataset_isassociated(sigrdataset))" Multiple versions are reported as being affected, including all currently supported release versions of ISC BIND 9. ISC is actively investigating the root cause and

406

MONITORING POWER PLANT EFFICIENCY USING THE MICROWAVE-EXCITED THERMAL-ACOUSTIC EFFECT TO MEASURE UNBURNED CARBON  

SciTech Connect

The objective of this project is to explore microwave-excited thermal-acoustic (META) phenomena for quantitative analysis of granular and powdered materials, with the culmination of the research to be an on-line carbon-in-ash monitor for coal-fired power plants. This technique of analyzing unburned carbon in fly ash could be a less tedious and time consuming method as compared to the traditional LOI manual procedure. Phase 1 of the research focused on off-line single-frequency thermal-acoustic measurements where an off-line fly ash monitor was constructed that could operate as analytical tool to explore instrument and methodology parameters for quantifying the microwave-excited thermal-acoustic effect of carbon in fly ash, and it was determined that the off-line thermal-acoustic technique could predict the carbon content of a random collection of fly ashes with a linear correlation constant of R{sup 2} = 0.778. Much higher correlations are expected for fly ashes generated from a single boiler. Phase 2 of the research developing a methodology to generate microwave spectra of various powders, including fly ash, coal, and inorganic minerals, and to determine if these microwave spectra could be used for chemical analyses. Although different minerals produced different responses, higher resolution microwave spectra would be required to be able to distinguish among minerals. Phase 3 of the research focused on the development of an on-line fly ash monitor that could be adapted to measure either a thermal-acoustic or thermal-elastic response to due microwave excitation of fly ash. The thermal-acoustic response was successfully employed for this purpose but the thermal-elastic response was too weak to yield a useful on-line device.

Robert C. Brown; Robert J. Weber; Jeffrey J. Swetelitsch

2005-01-01T23:59:59.000Z

407

Petrophysical properties and geology of selected intervals in the Frio Formation, Stratton field, South Texas for modeling interwell seismic logging response  

SciTech Connect

Seismic or continuity logging consists of locating a seismic source in one borehole near or in a low-velocity layer and deploying a detector array in a second borehole. Detection of guided waves transmitted between the two wells indicates bed connectivity. The guided wave signatures are either leaky modes or normal modes (or both). The technique has numerous applications in various types of heterogeneous geological environments, including many Gulf Coast gas reservoirs. It can be used to determine the continuity of beds between wells, estimate and locate variations in the thickness of beds, and estimate the average rock physical properties of the beds. Stratton field was selected as the Gulf-Coast-gas-play type field for a project to model interwell seismic logging responses. Stratton is a mature gas field located in the south Texas Gulf Coast, about 30 miles southwest of Corpus Christi. It encompasses over 120,000 acres in portions of Kleberg, Nueces, and Jim Wells counties. Stratton is one of 29 fields in the Frio Formation fluvial-deltaic lay associated with the Vicksburg fault zone along the Texas Gulf Coast Basin. This poster presentation explains the technique of interwell seismic logging, documents the petrophysical properties and geology of intervals in the upper and middle Frio, and presents the results of the forward modeling tests.

Collier, H.A. [Tarleton State Univ., Stephenville, TX (United States); Parra, J.O. [Southwest Research Inst., San Antonio, TX (United States)

1996-09-01T23:59:59.000Z

408

Note: Laser-induced acoustic desorption/synchrotron vacuum ultraviolet photoionization mass spectrometry for analysis of fragile compounds and heavy oils  

Science Journals Connector (OSTI)

In this work we coupled synchrotron vacuum ultraviolet photoionization (SVUV PI) method with the laser-induced acoustic desorption (LIAD) technique for mass spectrometric analysis. The LIAD technique is a soft desorption method which could avoid the degradation of analytes during desorption process. Meanwhile SVUV PI is an efficient soft ionization source. The new combination of the soft desorption technique and soft photoionization method is well suitable to reduce the difficulty for interpreting the mass spectra of the fragile compounds and heavy oils.

Liangyuan Jia; Junjie Weng; Zhongyue Zhou; Fei Qi; Wenyue Guo; Lianming Zhao; Juan Chen

2012-01-01T23:59:59.000Z

409

Acoustically determined linear piezoelectric response of lithium niobate up to 1100?V  

SciTech Connect

We present a method to measure high voltages using the piezoelectric crystal lithium niobate without using voltage dividers. A 36 Y-X cut lithium niobate crystal was coupled to two acoustic transducers, where direct current voltages were applied from 1281100?V. The time-of-flight through the crystal was determined to be linearly dependent on the applied voltage. A model was developed to predict the time-delay in response to the applied voltage. The results show a sensitivity of 17 fs/V with a measurement error of 1 fs/V was achievable using this method. The sensitivity of this method can be increased by measuring the acoustic wave after multiple passes through the crystal. This method has many advantages over traditional techniques such as: favorable scalability for larger voltages, ease of use, cost effectiveness, and compactness.

Patel, N. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106 (United States); Branch, D. W.; Cular, S. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Schamiloglu, E. [Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106 (United States)

2014-04-21T23:59:59.000Z

410

Chapter 6 - Seismic Inversion Techniques  

Science Journals Connector (OSTI)

Abstract Seismic inversion techniques were developed as a discipline at the same time that seismic technologies were widely applied in oil exploration and development starting in the 1980s. Except for basic theories and principles, seismic inversion techniques are different from traditional seismic exploration methods in geological tasks, involving basic information as well as study approaches. In the early stages of exploration, the geological task of seismic exploration was to find structures and identify traps, and seismic exploration techniques always focused on the ups and downs of reflection interfaces. They mainly relied on the travel time for structural interpretation. The main work of reservoir geophysics is to study the heterogeneity of a reservoir, and the main geological task is to make predictions on the reservoir parameters. Scientists focus on the lateral variation of reservoir characteristics and conduct seismic interpretation based on the information extracted from the results of reservoir seismic inversion. Seismic inversion has developed rapidly in recent years, including recursive inversion, log-constrained inversion, and multiparameter lithological seismic inversion. We choose different methods according to the geological characteristics and specific problems of the study area.

Ming Li; Yimin Zhao

2014-01-01T23:59:59.000Z

411

Systems theory in musical acoustics  

Science Journals Connector (OSTI)

Recent digital synthesis techniques for woodwind bores and strings (bowed plucked and the like) have been devised using long delay lines and sparsely distributed filter elements to efficiently simulate solutions to the one?dimensional wave equation. In the simplest case a string or bore can be modeled using a single delay line and a single low?order digital filter. This presentation describes techniques used to simulate specific physical phenomena in the context of these models. As is well known in the lossless case solutions to the 1?D wave equation can be expressed in terms of left?going and right?going traveling waves and these are efficiently simulated using pure delay lines plus perhaps a sign inversion at a termination. Abutting two waveguides of differing characteristic impedance gives rise to a scattering junction at the interface leading to the ladder and lattice digital filter structures used extensively in the field of signal processing. When there are losses or when string stiffness is important there is linear filtering along the waveguide. Because linear time?invariant filters commute the distributed losses and dispersion can be lumped at convenient places in the waveguide network without changing an input?output transfer function. Once they are thus consolidated it is usually possible especially in audio applications to find a very accurate approximation using a low?order lumped digital filter in place of the distributed filtering. On top of this physically accurate yet efficient model it is straightforward to introduce nonlinear extensions such as (1) bow?string slippage due to absolute string displacement (2) pitch decay due to the gradual decline of the average string tension (3) wave?front sharpening due to increased speed of sound at higher air pressures (4) closure forces on double reeds and vocal folds due to the Bernoulli effect (5) heat conduction losses and (6) spontaneous generation of turbulence due to high volume velocity through a narrow aperture.

Julius O. Smith III

1990-01-01T23:59:59.000Z

412

Coal log pipeline research at the University of Missouri. 1st Quarterly report for 1995, January 1, 1995--March 31, 1995  

SciTech Connect

Work continued on the study of coal log pipeline research. Individual projects described include fast compaction of coal logs; effect of cooling on coal log quality; coal log capping; effectiveness of adding fiber to enhance coal log quality; fabrication using hydrophobic binders; cost estimation of different lubricants; automatic control of coal log pipeline system; CLP design; coal log train transport; economics of coal log pipeline; legal aspects; heating, cooling, and drying of logs; vacuum systems to enhance production; design; and effect of piston modification on capping.

Liu, H.

1995-08-01T23:59:59.000Z

413

Acoustic boundary layer and acoustic radiation from a ribbed flat plate  

Science Journals Connector (OSTI)

The acoustic boundary?layer theory(patterned after the viscous boundary?layer theory) is derived by noting that for low frequencies where the structural wavelength is much less than the fluid acoustic wavelength there is a region about the vibrating structure which behaves as if the fluid was incompressible. The dimension of this region depends upon the particular conditions of the problem. In a paper presented by the author [J. Acoust. Soc. Am. 62 S32(A) (1977)] the theory behind the acoustic boundary layer was developed and applied to simple unit problems. In this paper the near and the far field of a force driven plate is obtained by the use of the acoustic boundary?layer theory. Two different problems are addressed. In the first instance the structure is assumed to be homogeneous while in the second problem presented a rib is attached to the flat plate. In both instances the fully coupled fluid structure problem is solved and comparisons between the exact classical approach and the proposed theory are discussed.

Mauro Pierucci

1978-01-01T23:59:59.000Z

414

Argonne Acoustic Levitation Video Goes Viral  

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

"Inside the Advanced Photon Source" Inside the latest Argonne Now "Inside the Advanced Photon Source" Inside the latest Argonne Now APS Director Stephenson Named Argonne Distinguished Fellow Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Technology and Research Rose of APS and CNM One of Four DOE Early Career Award Winners Scientists Close-In on Artificial Spider Silk APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Argonne Acoustic Levitation Video Goes Viral SEPTEMBER 25, 2012 Bookmark and Share Drops of solution being suspended for a long period of time, thanks to the vibrational force of sound waves that keep them stationary in an air column. More than 41,000 Google hits for "acoustic levitation Argonne" as of

415

Development of a geothermal acoustic borehole televiewer  

SciTech Connect

Most geothermal wells are drilled in hard rock formations where fluid flow is through systems of open fractures. Productivity of these wells is usually determined by the extent of intersection of the wellbore with the fracture system. A need exists for fracture mapping methods and tools which can operate in a geothermal environment. In less hostile environments, the acoustic borehole televiewer has been shown to be a useful tool for determining location, orientation, and characterization of fractures as they intersect the borehole and for general wellbore and casing inspection. The development conducted at Sandia National Laboratories to adapt an acoustic borehole televiewer for operation in a geothermal environment is described. The modified instrument has been successfully tested at temperatures as high as 280/sup 0/C and pressures up to 5000 psi, and used successfully to map fractures and casing damage in geothermal wells.

Heard, F.E.; Bauman, T.J.

1983-08-01T23:59:59.000Z

416

Acoustical performance testing of duct silencers  

Science Journals Connector (OSTI)

The test method used in North America to evaluate the acoustical performance of duct silencers is ASTM E477. The ASTM standard provides an approved method for measuring the aerodynamic pressure drop dynamic insertion loss and self?generated noise of duct silencers. Unfortunately restrictions on the construction of the test duct in the current standard cause erroneous results in the measurement of insertion loss at low frequencies. These errors are due to acoustic resonances that occur naturally in the empty test duct. It is recommended that the standard be modified to require anechoic terminations at both ends of the test duct. It is also recommended that more specific design criteria for the source chamber be established and that a new section be added to provide for the measurement of the radiated noise from the casing of the test specimen. Specific recommendations relating to all of these issues will be provided.

2002-01-01T23:59:59.000Z

417

Broadband acoustic imaging of breaking waves  

Science Journals Connector (OSTI)

An acoustic array was deployed in the near?surface layer in Saanich Inlet BC to image breaking waves using only the naturally occurring acoustical radiation in the band (160 and 2000 Hz) from the breaking region. The 15?element array was configured as a horizontal cross with an 8?m aperture bottom?moored and positioned nominally 3 m beneath the surface. A novel broadband scheme combined information at six independent frequencies above about 400 Hz to yield unambiguous resolved images. A parametric image analysis shows that the images align closely with the wind and can be observed moving downwind with a speed roughly equal to the dominant phase speed of the wind waves. Absolute power levels are found to be consistent with previously published results. The data also provide inferences regarding the sound generation mechanism at collective oscillation frequencies below about 400 Hz. [Work supported by ONR.

Rex K. Andrew; David M. Farmer; R. Lynn Kirlin

1997-01-01T23:59:59.000Z

418

Powerful, efficient, robust, electro?acoustic transducers  

Science Journals Connector (OSTI)

The STAR resonant reciprocating transducer began as a lightweight linear alternator design for a space?power free?piston Stirling engine in the early 1990's. It has since been developed into a range of commercially available motors and alternators with rated powers from 100 to over 10 000 watts (acoustic). As motors these are acoustic pressure drivers with unlimited operating life and typical transduction efficiencies of 80?90 percent. This paper explains the electrodynamics and operation of these moving? magnet Lorentz?force devices and the unique geometric configuration that has allowed scaling over such a wide range. We discuss the design and function of the unique single?degree?of?freedom flexure suspension that enables both the compact geometry and unlimited service life without wear. Data is presented from a large sample of units placed in service during the last decade demonstrating the durability and performance of these remarkable devices.

John Corey

2008-01-01T23:59:59.000Z

419

An overview of time?reversal acoustics  

Science Journals Connector (OSTI)

Time?reversal invariance is a very powerful concept in physics. In the field of acoustics where time reversal invariance occurs time?reversal experiments may be achieved simply with arrays of transmit?receive transducers allowing an incident wave field to be sampled recorded time?reversed and re?emitted. Time reversal mirrors (TRMs) may be used to study random media and chaotic reverberating structures. Common to these complex media is a remarkable robustness exemplified by observations that the more complex the medium between the probe source and the TRM the sharper the focus. TRMs open the way to new signal processings that interest imaging detection telecommunications and therapy. Time reversal mirrors have plenty of applications including ultrasonic therapy and medical imaging non destructive testing telecommunications underwater acoustics seismology sound control home automation. An overview of these fields will be presented.

Mathias Fink

2008-01-01T23:59:59.000Z

420

NW-MILO Acoustic Data Collection  

SciTech Connect

There is an enduring requirement to improve our ability to detect potential threats and discriminate these from the legitimate commercial and recreational activity ongoing in the nearshore/littoral portion of the maritime domain. The Northwest Maritime Information and Littoral Operations (NW-MILO) Program at PNNLs Coastal Security Institute in Sequim, Washington is establishing a methodology to detect and classify these threats - in part through developing a better understanding of acoustic signatures in a near-shore environment. The purpose of the acoustic data collection described here is to investigate the acoustic signatures of small vessels. The data is being recorded continuously, 24 hours a day, along with radar track data and imagery. The recording began in August 2008, and to date the data contains tens of thousands of signals from small vessels recorded in a variety of environmental conditions. The quantity and variety of this data collection, with the supporting imagery and radar track data, makes it particularly useful for the development of robust acoustic signature models and advanced algorithms for signal classification and information extraction. The underwater acoustic sensing system is part of a multi-modal sensing system that is operating near the mouth of Sequim Bay. Sequim Bay opens onto the Straight of Juan de Fuca, which contains part of the border between the U.S. and Canada. Table 1 lists the specific components used for the NW-MILO system. The acoustic sensor is a hydrophone permanently deployed at a mean depth of about 3 meters. In addition to a hydrophone, the other sensors in the system are a marine radar, an electro-optical (EO) camera and an infra-red (IR) camera. The radar is integrated with a vessel tracking system (VTS) that provides position, speed and heading information. The data from all the sensors is recorded and saved to a central server. The data has been validated in terms of its usability for characterizing the signatures of small vessels. The sampling rate of 8 kHz and low pass filtering to 2 kHz results in an alias-free signal in the frequency band that is appropriate for small vessels. Calibration was performed using a Lubell underwater speaker so that the raw data signal levels can be converted to sound pressure. Background noise is present due to a nearby pump and as a result of tidal currents. More study is needed to fully characterize the noise, but it does not pose an obstacle to using the acoustic data for the purposes of vessel detection and signature analysis. The detection range for a small vessel was estimated using the calibrated voltage response of the system and a cylindrical spreading model for transmission loss. The sound pressure of a typical vessel with an outboard motor was found to be around 140 dB mPa, and could theoretically be detected from 10 km away. In practical terms, a small vessel could reliably be detected from 3 - 5 km away. The data is archived in netCDF files, a standard scientific file format that is "self describing". This means that each data file contains the metadata - timestamps, units, origin, etc. - needed to make the data meaningful and portable. Other file formats, such as XML, are also supported. A visualization tool has been developed to view the acoustic data in the form of spectrograms, along with the coincident radar track data and camera images.

Matzner, Shari; Myers, Joshua R.; Maxwell, Adam R.; Jones, Mark E.

2010-02-17T23:59:59.000Z

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Pulse combusted acoustic agglomeration apparatus and process  

DOE Patents (OSTI)

An improved apparatus and process for removal of particulates entrained in a gas stream are provided. The removal process employs a pulse combustor to provide an acoustic pressure wave to acoustically enhance agglomeration of particulates which may be collected and removed using a conventional separation apparatus. The apparatus may be employed as a direct fired system for improved operation of gas-operated equipment such as a gas turbine, or may, alternatively, be employed as an add-on subsystem for combustion exhaust clean-up. Additionally, added particulates may include a sorbent for effecting sorption of other contaminants such as sulfur. Various other particulates for contaminant removal may also be introduced into the system as exemplified by alkali-gettering agents.

Mansour, Momtaz N. (Columbia, MD); Chandran, Ravi (Ellicott City, MD)

1994-01-01T23:59:59.000Z

422

Pulse combusted acoustic agglomeration apparatus and process  

DOE Patents (OSTI)

An improved apparatus and process for removal of particulates entrained in a gas stream are provided. The removal process employs a pulse combustor to provide an acoustic pressure wave to acoustically enhance bimodal agglomeration of particulates which may be collected and removed using a conventional separation apparatus. A particulate having a size different from the size of the particulate in the gas stream to be cleaned is introduced into the system to effectuate the bimodal process. The apparatus may be employed as a direct fired system for improved operation of gas-operated equipment such as a gas turbine, or may, alternatively, be employed as an add-on subsystem for combustion exhaust clean-up. Additionally, the added particulate may be a sorbent for effecting sorption of other contaminants such as sulfur. Various other particulates for contaminant removal may also be introduced into the system as exemplified by alkali-gettering agents.

Mansour, Momtaz N. (Columbia, MD)

1993-01-01T23:59:59.000Z

423

Property:ThermalInfo | Open Energy Information  

Open Energy Info (EERE)

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

424

Ongoing developments in classroom acoustic theory and practice in 2012, and reports on efforts to implement good classroom acoustics  

Science Journals Connector (OSTI)

We live in a time of increasingly loud competing sounds and hearing loss is the number one disability in the world. Diverse populations of school children are especially vulnerable. The result is a degradation of the childs academic achievement. New classrooms built everyday often incorporate acoustical barriers which limit students achievements. Overcoming these barriers involves funding constraints construction timelines and lack of support which requires advocacy from parents school boards and design teams. This advocacy should include the ANSI Classroom Acoustics standards and an acoustical assessment of existing classrooms. Complex classroom acoustics challenges may include reduction of noise radiated by HVAC systems improved acoustic treatment of external walls to minimize exterior noise and acoustic design of walls between adjacent noisy classrooms. Next steps for schools should be to retain an architect and/or an acoustical engineer for remodels and new school construction who are well versed in acoustics for educational settings and noise control. A booklet covering these issues and designed as a practical guide for educators not versed in acoustics is in preparation by the Acoustical Society of America.

Pamela Brown; Mary Crouse

2012-01-01T23:59:59.000Z

425

Acoustic enhancement for photo detecting devices  

DOE Patents (OSTI)

Provided are improvements to photo detecting devices and methods for enhancing the sensitivity of photo detecting devices. A photo detecting device generates an electronic signal in response to a received light pulse. An electro-mechanical acoustic resonator, electrically coupled to the photo detecting device, damps the electronic signal and increases the signal noise ratio (SNR) of the electronic signal. Increased photo detector standoff distances and sensitivities will result.

Thundat, Thomas G; Senesac, Lawrence R; Van Neste, Charles W

2013-02-19T23:59:59.000Z

426

Acoustic measurement of potato cannon velocity  

E-Print Network (OSTI)

This article describes measurement of potato cannon velocity with a digitized microphone signal. A microphone is attached to the potato cannon muzzle and a potato is fired at an aluminum target about 10 m away. The potato's flight time can be determined from the acoustic waveform by subtracting the time in the barrel and time for sound to return from the target. The potato velocity is simply the flight distance divided by the flight time.

Courtney, M; Courtney, Amy; Courtney, Michael

2006-01-01T23:59:59.000Z

427

Acoustic radiation due to surface wave breaking.  

Science Journals Connector (OSTI)

While wave breaking is continually occurring at the sea surface its transient and sporadic nature makes it difficult to measure. Experimental results are presented that show how acoustic methods can be used as a remote sensor of this fundamental process. Sea surface?generated acoustic radiation (40 to 4000 Hz) is directly related to a quantitative measure of the boundary dynamics; i.e. the Toba variable. The frequency spectrum of the radiation remains remarkably unchanged over a wide range of environmental conditions but the correlation between the sound pressure level and the Toba variable undergoes an abrupt change when spilling breakers start to occur. Results support the use of acoustics to remotely measure the rate of energy being dissipated by wave breaking and the wavelength of the dominant gravity wave component. Theoretical studies have related the field measurements to analytical and laboratory results cited in the literature indicating that remote monitoring of the rate of occurrence and size distribution of infant (freshly entrained) bubbles may be possible if splashes on the surface do not radiate significant sound. Signal processing algorithms for the remote measurements discussed above are enhanced by eigenstructure analysis of the measured cross?spectral density matrix. [Work sponsored by ONR and NUSC.

Robert M. Kennedy; Stewart A. L. Glegg

1992-01-01T23:59:59.000Z

428

Air transducers with high acoustic impedance  

Science Journals Connector (OSTI)

High?Z air transducers evolved from several industrial transducers. These predecessors include (a) acoustic emission and angle?beam NDT contact transducers; (b) flowmeter transducers for high?pressure methane hot refinery gases and corrosive flare gases; and (c) transducer arrays for monitoring hot corrosive gases flowing at Mach 0.1 in smokestacks of ?313 m. This peculiar ancestry accounts for their unusual high?acoustic?impedance construction. By not employing low?Z air?backed radiating membranes transducer bandwidth response time and sensitivity are sacrificed. The solid robust construction however offers some compensating features: tolerance to wide ranges in pressure and temperature including rapid rates of change (thermal shock depressurization); corrosion resistance; operable with standard lab equipment without bias voltage; mounting options where the transducer forms part of the pressure boundary or where it is outside the pressure boundary. Clamp?on air flow applications at one bar include small wind tunnels and plastic pipes. Acoustically isolated pairs measure secondary flow components (crossflow circulation) in a plane perpendicular to the pipe axis. Flow applications include gases such as air mild steam (pending) or other hot pressurized or corrosive fluids. Air?coupled measurements of transmission characteristics of wood or other low?density solids and air?ranging are readily demonstrated with the low?Z transducers.

Lawrence C. Lynnworth

1998-01-01T23:59:59.000Z

429

Acoustical renovation of portable classrooms for cochlear implanted pupils  

Science Journals Connector (OSTI)

Anticipating increased enrollment of children with cochlear implants the Riverside County Office of Education undertook the acoustical renovation of two portable classrooms in Californias Riverside County: Wildomar Elementary School in Wildomar and Katherine Finchy Elementary School in Palm Springs. The aim was to improve the acoustical environment to make the classrooms suitable for pupils with severe hearing disabilities (reduce noise and reverberation). Lacking an acoustical standard specific for cochlear implanted pupils the acoustical goals chosen were those of the ANSI acoustical standard S12.60?2002. Key changes were intended to reduce interior noise from HVAC and improve the facade insulation to reduce exterior noise intrusion. The resulting acoustical improvements are documented. Costs and lessons learned are discussed.

2004-01-01T23:59:59.000Z

430

Grade Assignments for Models Used for Calibration of Gross-Count Gamma-Ray Logging Systems (December 1983)  

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

Grade Assignments for Models Used for Calibration of Gross-Count Gamma-Ray Logging Systems (December 1983)

431

Log Summarization and Anomaly Detection for TroubleshootingDistributed Systems  

SciTech Connect

Today's system monitoring tools are capable of detectingsystem failures such as host failures, OS errors, and network partitionsin near-real time. Unfortunately, the same cannot yet be said of theend-to-end distributed softwarestack. Any given action, for example,reliably transferring a directory of files, can involve a wide range ofcomplex and interrelated actions across multiple pieces of software:checking user certificates and permissions, getting details for allfiles, performing third-party transfers, understanding re-try policydecisions, etc. We present an infrastructure for troubleshooting complexmiddleware, a general purpose technique for configurable logsummarization, and an anomaly detection technique that works in near-realtime on running Grid middleware. We present results gathered using thisinfrastructure from instrumented Grid middleware and applications runningon the Emulab testbed. From these results, we analyze the effectivenessof several algorithms at accurately detecting a variety of performanceanomalies.

Gunter, Dan; Tierney, Brian L.; Brown, Aaron; Swany, Martin; Bresnahan, John; Schopf, Jennifer M.

2007-08-01T23:59:59.000Z

432

Electret Acoustic Transducer Array For Computerized Ultrasound Risk Evaluation System  

DOE Patents (OSTI)

An electret-based acoustic transducer array is provided and may be used in a system for examining tissue. The acoustic transducer array is formed with a substrate that has a multiple distinct cells formed therein. Within each of the distinct cells is positioned an acoustic transducing element formed of an electret material. A conductive membrane is formed over the distinct cells and may be flexible.

Moore, Thomas L. (Livermore, CA); Fisher, Karl A. (Brentwood, CA)

2005-08-09T23:59:59.000Z

433

Penn State's graduate program in acoustics  

Science Journals Connector (OSTI)

The posters will present a comprehensive overview of the graduate program in acoustics at Penn State. In part the posters will contain the following: (1) descriptions of the acoustics and related courses offered; (2) examples of the facilities available and the research being conducted; (3) listings of graduate theses completed and in progress; (4) information on special extended education programstelecommunication and summerleading to a master's degree in acoustics.

Alan D. Stuart

1988-01-01T23:59:59.000Z

434

Geologic flow characterization using tracer techniques  

SciTech Connect

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

435

Nondestructive Technique Survey for Assessing Integrity of Composite Firing Vessel  

SciTech Connect

The repeated use and limited lifetime of a composite tiring vessel compel a need to survey techniques for monitoring the structural integrity of the vessel in order to determine when it should be retired. Various nondestructive techniques were researched and evaluated based on their applicability to the vessel. The methods were visual inspection, liquid penetrant testing, magnetic particle testing, surface mounted strain gauges, thermal inspection, acoustic emission, ultrasonic testing, radiography, eddy current testing, and embedded fiber optic sensors. It was determined that embedded fiber optic sensor is the most promising technique due to their ability to be embedded within layers of composites and their immunity to electromagnetic interference.

Tran, A.

2000-08-01T23:59:59.000Z

436

Spectral-element numerical modeling for acoustic and elastic  

E-Print Network (OSTI)

problems: many oil fields are located offshore (deep offshore, or shallower). · Anisotropic rocks dispersive surface waves. Oil industry applications Offshore In foothill regions #12;Ocean acoustics

437

A new method to measure the acoustic surface impedance outdoors  

Science Journals Connector (OSTI)

......Comparative Study Evaluation Studies Journal Article Validation Studies | Acoustics Algorithms Automobiles Construction Materials analysis Electric Impedance Materials Testing methods Models, Theoretical Noise, Transportation Radiation Monitoring......

S. Carpinello; Ph. L'Hermite; M. Brengier; G. Licitra

2004-11-01T23:59:59.000Z

438

Acoustic scattering by axisymmertic finite-length bodies with application to fish : measurement and modeling  

E-Print Network (OSTI)

This thesis investigates the complexities of acoustic scattering by finite bodies in general and by fish in particular through the development of an advanced acoustic scattering model and detailed laboratory acoustic ...

Reeder, D. Benjamin (Davis Benjamin), 1966-

2002-01-01T23:59:59.000Z

439

E-Print Network 3.0 - acoustic measurements Sample Search Results  

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

2008 NOAA-TM-NMFS-SWFSC-429 Summary: by the acoustics team (Table 9, Fig. 19). Acoustic detection distances were not measured for this group. P. electra... NMFS ACOUSTIC STUDIES...

440

E-Print Network 3.0 - acoustical measurements Sample Search Results  

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

2008 NOAA-TM-NMFS-SWFSC-429 Summary: by the acoustics team (Table 9, Fig. 19). Acoustic detection distances were not measured for this group. P. electra... NMFS ACOUSTIC STUDIES...

Note: This page contains sample records for the topic "techniques acoustic logs" 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

Acoustic energy radiated by nonlinear spherical oscillations of strongly driven bubbles  

Science Journals Connector (OSTI)

...considerations of surface stability. With the quasi-acoustic...acoustic energies of bubbles driven at 23.5kHz...universal boundary of bubble stability at the upper threshold...harmonic modes on bubble levitation, stability and SLJ. Acoust...

2010-01-01T23:59:59.000Z

442

Nonprofit Organizations: Have Your Los Alamos Employees/Retirees Log Hours  

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

Nonprofit Organizations: Have Your Los Alamos Employees/Retirees Log Nonprofit Organizations: Have Your Los Alamos Employees/Retirees Log Hours in VolunteerMatch Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit Nonprofit Organizations: Have Your Los Alamos Employees/Retirees Log Hours in VolunteerMatch Lab employees and retirees should log their VolunteerMatch hours to benefit local nonprofits. March 1, 2013 Volunteers help fill sandbags during flood season Volunteers help in many different roles including in healthcare. Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email So far, employees and retirees have volunteered more than 1.2 million volunteer hours. If you are a nonprofit organization that has Lab employees or retirees as

443

"Tier","PRIORITY","Total Tickets Logged","Tickets Closed","Currently...  

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

"TOTAL",,255,261,0 "SCR",,255,255,0 ,,0.9843137255,0.9616858238 "Total Issues Report - ESS",,,,"20120101 - 20120418" "Tier","PRIORITY","Total Tickets Logged","Tickets...

444

UMD WebAssign -General Information Logging into the WebAssign system  

E-Print Network (OSTI)

UMD WebAssign - General Information · Logging into the WebAssign system o If you registered for the course later than the day before classes started you will not yet be enrolled in the course on Web

Johnson, Raymond L.

445

Characterization of the Germania Spraberry unit from analog studies and cased-hole neutron log data  

E-Print Network (OSTI)

a dependent variable (permeability) from multiple independent variables (rock type, shale volume and porosity) will also be investigated in this study. A log data base includes digitized formats of gamma ray, cased hole neutron, limited resistivity...

Olumide, Babajide Adelekan

2005-11-01T23:59:59.000Z

446

Interpretation of some wireline logs in geothermal fields of the Imperial Valley, California  

SciTech Connect

This study reviews the wireline log responses of some geothermal fields in the Imperial Valley, California. The fields under study include the Heber, the East Mesa, the Brawley and the Westmoreland. The selected well logs obtained under special arrangements with the operators were chosen to maintain the anonymity of specific well locations but are only representative of each area. Analysis of the well logs indicate that on an individual field basis, the well logs are excellent for correlation purposes. The presence of extremely saline fluids in some fields precludes the monitoring of Q /SUB V/ profile for detection of hydrothermally altered zones. The producing sections in all the fields are characterized by low porosity and high resistivity.

Ershaghi, I.; Abdassah, D.

1983-03-01T23:59:59.000Z

447

In cooperation with the University of Waterloo, Canada Application of Advanced Geophysical Logging Methods  

E-Print Network (OSTI)

.S. Geological Survey #12;2 Figure 1. Location of Rocketdyne Santa Susana Field Laboratory and logged boreholes sandstone and mudstone at the Rocketdyne Santa Susana Field ,, in southern Ventura County, California (fig

Singha, Kamini

448

Characteristic fuel consumption and exhaust emissions in fully mechanized logging operations  

Science Journals Connector (OSTI)

A study was done using eight different logging machines (harvesters and forwarders) in clear-felling operations to quantify the associated fuel consumption, and to define the inherent relationship between engine ...

Radomir Klvac; Alois Skoupy

2009-12-01T23:59:59.000Z

449

Lithology and well log study of Campbell E-2 geothermal test...  

Open Energy Info (EERE)

well log study of Campbell E-2 geothermal test well, Humboldt House geothermal prospect, Pershing County, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library...

450

Formation evaluation using wavelet analysis on logs of the Chinji and Nagri Formations, northern Pakistan  

E-Print Network (OSTI)

The relatively new method of using wavelets in well log analysis is a powerful tool for defining multiple superimposed scales of lithic trends and contacts. Interpreting depositional processes associated with different scales of vertical variation...

Tanyel, Emre Doruk

2006-10-30T23:59:59.000Z

451

Correction of non-equilibrated temperature logs and implications for geothermal investigations  

Science Journals Connector (OSTI)

Optimum data for any geothermal investigation are densely sampled, high precision temperature logs from boreholes. They should represent the formation temperature as accurately as possible. Often, temperature measurements influenced by the drilling process and the circulation do not have the quality which is required for geothermal methods. Horner's method is a widely used correction method that is based on analysis of a time series of temperature observations. Mostly, these data are not available and a correction is therefore not possible. The approach presented here enables us to correct entire temperature logs even if no repeat measurements were carried out. This is achieved by combination of the theory of Horner's method with estimates for radial heat flow. Given a large number of technically perturbed logs this new approach enlarges considerably the potential database suitable for geothermal methods. The implications for two important fields of application are also discussed. These are fluid flow analysis and analysis of the ground surface temperature history on temperature logs.

Andrei Zschocke

2005-01-01T23:59:59.000Z

452

Using Domain Models for Context-Rich User Logging Stephen Dignum  

E-Print Network (OSTI)

Traversal, User Logging 1. INTRODUCTION Searches within document collections like intranets differ from amount of time is spent by users trying to learn the domain characteristics even before they are able

Kruschwitz, Udo

453

Station location map and audio-magnetotelluric data log for Rye...  

Open Energy Info (EERE)

location map and audio-magnetotelluric data log for Rye Patch known geothermal resource area Jump to: navigation, search OpenEI Reference LibraryAdd to library Map: Station...

454

E-print Network Web Log News: Research Communications for Scientists...  

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

Website Policies and Important Links E-print Web Log E-print Network News E-print Network About Search Browse by Discipline Find Scientific Societies Receive E-print Alerts Contact...

455

ITTF-016 Website Development-Maintenance Log 09_0909 EOTA - Business Form  

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

6 Website Development-Maintenance Log 09_0909 6 Website Development-Maintenance Log 09_0909 EOTA - Business Form Document Title: ITTP-015 Web Site Development / Maintenance Document Number: Website Development and Maintenance log ITT Melissa Otero N/A Referenced Documents: Parent Document: ITTF-016 Rev. 11_0419 Approvers: Melissa Otero Document Owner: Ben Aragon Backup Owner: Notify of Changes: A B 08_0818 Revision History: Rev. Description of Change Intitial Release. Added headings to address to include: Performance Requirements, Statutory and Regulatory Requirements, Information from Previous Similar Designs, and Other Requirements. Added additional column to indicate "Estimated Completion Date" of WSD projects. "Design Verification Complete" and "Design Validation Complete" columns removed from log.

456

Emission formation during wood log combustion in fireplaces ?? part I: volatile combustion stage  

Science Journals Connector (OSTI)

A CFD-based tool for the analysis of combustion and emissions in batch-fired wood log combustion is introduced. It consists of submodels for drying and pyrolysis of a wood log, for combustion of volatilised fuel and char, for radiative heat transfer, and for NO formation implemented in a commercial CFD-programme (Fluent) for turbulent flows. Comparing model predictions to experimental data in a test oven shows the applicability of the different submodels and combination of them.

M. Huttunen; J. Saastamoinen; P. Kilpinen; L. Kjaldman; H. Oravainen; S. Bostrom

2006-01-01T23:59:59.000Z

457

Results of investigations at the Zunil geothermal field, Guatemala: Well logging and brine geochemistry  

SciTech Connect

The well logging team from Los Alamos and its counterpart from Central America were tasked to investigate the condition of four producing geothermal wells in the Zunil Geothermal Field. The information obtained would be used to help evaluate the Zunil geothermal reservoir in terms of possible additional drilling and future power plant design. The field activities focused on downhole measurements in four production wells (ZCQ-3, ZCQ-4, ZCQ-5, and ZCQ-6). The teams took measurements of the wells in both static (shut-in) and flowing conditions, using the high-temperature well logging tools developed at Los Alamos National Laboratory. Two well logging missions were conducted in the Zunil field. In October 1988 measurements were made in well ZCQ-3, ZCQ-5, and ZCQ-6. In December 1989 the second field operation logged ZCQ-4 and repeated logs in ZCQ-3. Both field operations included not only well logging but the collecting of numerous fluid samples from both thermal and nonthermal waters. 18 refs., 22 figs., 7 tabs.

Adams, A.; Dennis, B.; Van Eeckhout, E.; Goff, F.; Lawton, R.; Trujillo, P.E.; Counce, D.; Archuleta, J. (Los Alamos National Lab., NM (USA)); Medina, V. (Instituto Nacional de Electrificacion, Guatemala City (Guatemala). Unidad de Desarollo Geotermico)

1991-07-01T23:59:59.000Z

458

(Teff,log g,[Fe/H]) Classification of Low-Resolution Stellar Spectra using Artificial Neural Networks  

E-Print Network (OSTI)

New generation large-aperture telescopes, multi-object spectrographs, and large format detectors are making it possible to acquire very large samples of stellar spectra rapidly. In this context, traditional star-by-star spectroscopic analysis are no longer practical. New tools are required that are capable of extracting quickly and with reasonable accuracy important basic stellar parameters coded in the spectra. Recent analyses of Artificial Neural Networks (ANNs) applied to the classification of astronomical spectra have demonstrated the ability of this concept to derive estimates of temperature and luminosity. We have adapted the back-propagation ANN technique developed by von Hippel et al. (1994) to predict effective temperatures, gravities and overall metallicities from spectra with resolving power ~ 2000 and low signal-to-noise ratio. We show that ANN techniques are very effective in executing a three-parameter (Teff,log g,[Fe/H]) stellar classification. The preliminary results show that the technique is even capable of identifying outliers from the training sample.

Shawn Snider; Yuan Qu; Carlos Allende Prieto; Ted von Hippel; Timothy C. Beers; Chistopher Sneden; David L. Lambert

1999-12-19T23:59:59.000Z

459

E-Print Network 3.0 - amplitude acoustic wave Sample Search Results  

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Geosciences 15 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

460

E-Print Network 3.0 - acoustic waves moving Sample Search Results  

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

Engineering 14 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

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461

E-Print Network 3.0 - acoustic wave gas Sample Search Results  

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Physics 19 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

462

E-Print Network 3.0 - acoustic wave induced Sample Search Results  

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Mathematics 9 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

463

E-Print Network 3.0 - acoustic waves generated Sample Search...  

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Sciences 17 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

464

E-Print Network 3.0 - acoustic wave detector Sample Search Results  

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Physics 3 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

465

E-Print Network 3.0 - acoustic wave actuated Sample Search Results  

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Plasma actuator, flow control, acoustic control, airframe noise 1. INTRODUCTION 1.1. Background... applications. Section 3 reviews some applications related to aero-acoustics,...

466

E-Print Network 3.0 - acoustic cavitation bubble Sample Search...  

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Collection: Physics 62 Acoustic saturation in bubbly cavitating flow adjacent to an oscillating wall T. Colonius,a) Summary: Acoustic saturation in bubbly cavitating flow...

467

E-Print Network 3.0 - acoustic measuring instruments Sample Search...  

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text... III Center for Computer Research in Music and Acoustics (CCRMA) ... Source: Smith III, Julius Orion - Center for Computer Research in Music and Acoustics, Stanford...

468

E-Print Network 3.0 - alternative proposal acoustic Sample Search...  

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'acoustique 1990 APPLICATION OF FAST HARTLEY TRANSFORM TO ACOUSTIC INTENSITY MEASUREMENT W.S. GAN Acoustical... Services (1989)Pte Ltd, 29 Telok Ayer Street, Singapore 0104....

469

E-Print Network 3.0 - acoustic resonance determination Sample...  

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Collection: Mathematics 31 Acoustic Identification of Unknown Fluids Summary: Acoustic Identification of Unknown Fluids Executive Overview: Scientists at Los Alamos National......

470

E-Print Network 3.0 - anisotropic linear acoustics Sample Search...  

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the Shallow Water '06 experiment are analyzed. Acoustic, environmental, and on-board ship radar... packet passed through the acoustic track. Preliminary analysis of the ......

471

Acoustical and Noise Control Criteria and Guidelines for Building Design and Operations  

E-Print Network (OSTI)

Noise, vibration and acoustical design, construction, commissioning and operation practices influence building cost, efficiency, performance and effectiveness. Parameters for structural vibration, building systems noise, acoustics and environmental...

Evans, J. B.; Himmel, C. N.

472

E-Print Network 3.0 - acoustic heating Sample Search Results  

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

Collection: Engineering 46 Ocean Climate Change: Comparison of Acoustic Summary: Consortium Comparisons of gyre-scale acoustic and direct thermal measurements of heat...

473

E-Print Network 3.0 - acoustic testing Sample Search Results  

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

OCEAN Summary: A COMPARISON OF ACOUSTIC THERMOMETRY, XBT, TOPEX, AND HOT OBSERVATIONS OF OCEAN TEMPERATURE... @apl.washington.edu) Abstract - Acoustic thermometry offers naturally...

474

E-Print Network 3.0 - acoustical testing laboratory Sample Search...  

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Engineering 10 A COMPARISON OF ACOUSTIC THERMOMETRY, XBT, TOPEX, AND HOT OBSERVATIONS OF OCEAN TEMPERATURE IN THE NORTHEAST PACIFIC OCEAN Summary: A COMPARISON OF ACOUSTIC...

475

E-Print Network 3.0 - acoustic wave integrated Sample Search...  

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93 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

476

E-Print Network 3.0 - acoustic wave total Sample Search Results  

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98 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

477

E-Print Network 3.0 - acoustic gravity waves Sample Search Results  

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45 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

478

E-Print Network 3.0 - acoustic wave sensing Sample Search Results  

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62 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

479

E-Print Network 3.0 - acoustic tiltedti media Sample Search Results  

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Follow geometry and physical properties of a desired acoustic system Efficient Source: Smith III, Julius Orion - Center for Computer Research in Music and Acoustics, Stanford...

480

E-Print Network 3.0 - acoustic propagation experiment Sample...  

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of perceptual measurements Statistics for acoustics experiments Acoustics of porous media . The second... of Waveguides: Wave propagation in a guide Mode matching ...

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481

E-Print Network 3.0 - acoustic neurinoma presenting Sample Search...  

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Grant Collection: Engineering 20 Wave Gliders for Acoustic Applications Asst. Prof. Brian Bingham Summary: the design of a vehicle with integrated acoustic communication and...

482

E-Print Network 3.0 - acoustics Sample Search Results  

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Collection: Geosciences 24 Wave Gliders for Acoustic Applications Asst. Prof. Brian Bingham Summary: Wave Gliders for Acoustic Applications Asst. Prof. Brian Bingham...

483

E-Print Network 3.0 - acoustic transfer functions Sample Search...  

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Computer Technologies and Information Sciences 3 The Acoustic Oceanographic Buoy A Light Acoustic Data Acquisition System Summary: : The AOB functionality allows for the...

484

Distributed three-dimensional finite-difference modeling of wave propagation in acoustic media  

Science Journals Connector (OSTI)

Finite-difference modeling of wave propagation in heterogeneous media is a useful technique in a number of disciplines including earthquake and oil exploration seismology laboratory ultrasonics ocean acoustics radar imaging nondestructive evaluation and others. However the size of the models that can be treated by finite-difference methods in three spatial dimensions has limited their application to supercomputers. We describe a finite-difference domain-decomposition method for the three-dimensional acoustic wave equation which is well suited to distributed parallelization. We have implemented this algorithm using the PVM message-passing library and show here benchmarks on two different distributed memory architectures the IBM SP2 and a network of low-cost PCs running the Linux operating system. We present performance measurements of this algorithm on both the low-bandwidth PC network (10-Mbits/s Ethernet) and the high-bandwidth SP2 cluster (40-Mbits/s switch). These results demonstrate the feasibility of doing distributed finite-difference acoustic modeling on networks of workstations but point to the substantial efficiencies that can be expected as higher bandwidth networks become available. 1997 American Institute of Physics.

Alberto Villarreal

1997-01-01T23:59:59.000Z

485

Experimental study of acoustic radiation from a boundary layer transition region  

Science Journals Connector (OSTI)

Wall pressurefluctuations were measured on a rigid axisymmetric body in the CEPRA 19 low?noise anechoic wind tunnel using flush?mounted microphones placed from the laminar region to the fully turbulent boundary layer. Microphones placed in the laminar flow region are used to detect noise radiated from the transition region which occurs naturally without separation under a slightly positive pressure gradient. Cross?spectral analyses show upstream acoustic propagation in a very wide frequency band 430 kHz detected in the laminar region. A method of conditional analysis is then used to establish the sequence of events from the onset of near?harmonic instability wave packets to the generation about 10 ms later of turbulent spots leading to the acoustic emission. This intermittent acoustic radiation is detected in the nearfield for wind velocities ranging from 2070 ms. Farfield detection was not achieved probably because of instrument limitations and propagation effects. [Work supported by DRET Direction des Recherches et Etudes Techniques.

J. C. Perraud; A. Julienne

1986-01-01T23:59:59.000Z

486

Dust acoustic solitary and shock excitations in a Thomas-Fermi magnetoplasma  

SciTech Connect

The linear and nonlinear properties of dust-acoustic waves are investigated in a collisionless Thomas-Fermi magnetoplasma, whose constituents are electrons, ions, and negatively charged dust particles. At dust time scale, the electron and ion number densities follow the Thomas-Fermi distribution, whereas the dust component is described by the classical fluid equations. A linear dispersion relation is analyzed to show that the wave frequencies associated with the upper and lower modes are enhanced with the variation of dust concentration. The effect of the latter is seen more strongly on the upper mode as compared to the lower mode. For nonlinear analysis, we obtain magnetized Korteweg-de Vries (KdV) and Zakharov-Kuznetsov (ZK) equations involving the dust-acoustic solitary waves in the framework of reductive perturbation technique. Furthermore, the shock wave excitations are also studied by allowing dissipation effects in the model, leading to the Korteweg-de Vries-Burgers (KdVB) and ZKB equations. The analysis reveals that the dust-acoustic solitary and shock excitations in a Thomas-Fermi plasma are strongly influenced by the plasma parameters, e.g., dust concentration, dust temperature, obliqueness, magnetic field strength, and dust fluid viscosity. The present results should be important for understanding the solitary and shock excitations in the environments of white dwarfs or supernova, where dust particles can exist.

Rahim, Z.; Qamar, A. [Institute of Physics and Electronics, University of Peshawar, Peshawar 25000 (Pakistan); National Center for Physics (NCP) at QAU Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan); Ali, S. [National Center for Physics (NCP) at QAU Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan)

2014-07-15T23:59:59.000Z

487

Argonoxygen dc magnetron discharge plasma probed with ion acoustic waves  

SciTech Connect

The precise determination of the relative concentration of negative ions is very important for the optimization of magnetron sputtering processes, especially for those undertaken in a multicomponent background produced by adding electronegative gases, such as oxygen, to the discharge. The temporal behavior of an ion acoustic wave excited from a stainless steel grid inside the plasma chamber is used to determine the relative negative ion concentration in the magnetron discharge plasma. The phase velocity of the ion acoustic wave in the presence of negative ions is found to be faster than in a pure argon plasma, and the phase velocity increases with the oxygen partial pressure. Optical emission spectroscopy further confirms the increase in the oxygen negative ion density, along with a decrease in the argon positive ion density under the same discharge conditions. The relative negative ion concentration values measured by ion acoustic waves are compared with those measured by a single Langmuir probe, and a similarity in the results obtained by both techniques is observed.

Saikia, Partha, E-mail: partha.008@gmail.com; Saikia, Bipul Kumar; Goswami, Kalyan Sindhu [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur, Kamrup, Assam 782 402 (India); Phukan, Arindam [Madhabdev College, Narayanpur, Lakhimpur, Assam 784164 (India)

2014-05-15T23:59:59.000Z

488

MEASURING BARYON ACOUSTIC OSCILLATIONS ON 21 cm INTENSITY FLUCTUATIONS AT MODERATE REDSHIFTS  

SciTech Connect

After reionization, emission in the 21 cm hyperfine transition provides a direct probe of neutral hydrogen distributed in galaxies. Different from galaxy redshift surveys, observation of baryon acoustic oscillations in the cumulative 21 cm emission may offer an attractive method for constraining dark energy properties at moderate redshifts. Keys to this program are techniques to extract the faint cosmological signal from various contaminants, such as detector noise and continuum foregrounds. In this paper, we investigate the possible systematic and statistical errors in the acoustic scale estimates using ground-based radio interferometers. Based on the simulated 21 cm interferometric measurements, we analyze the performance of a Fourier-space, light-of-sight algorithm in subtracting foregrounds, and further study the observing strategy as a function of instrumental configurations. Measurement uncertainties are presented from a suite of simulations with a variety of parameters, in order to have an estimate of what behaviors will be accessible in the future generation of hydrogen surveys. We find that 10 separate interferometers, each of which contains {approx}300 dishes, observing an independent patch of the sky and producing an instantaneous field of view (FOV) of {approx}100 deg{sup 2}, can be used to make a significant detection of acoustic features over a period of a few years. Compared to optical surveys, the broad bandwidth, wide FOV, and multi-beam observation are all unprecedented capabilities of low-frequency radio experiments.

Mao Xiaochun, E-mail: xcmao@bao.ac.cn [National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2012-06-20T23:59:59.000Z

489

History of structural acoustics and vibrations in the Acoustical Society of America  

Science Journals Connector (OSTI)

Structural acoustics refers to the interaction of sound and structuresthe response of structures to sound the radiation of sound from vibrating structures and the effect of the acoustic medium on the structural vibrations. Interest in these subjects increased greatly during the 1930s and 40s because of practical applications in the design of microphones and loud speakers used in telephones radios and electronic phonographs. The combination of electrical and mechanical systems lead to the use of electrical engineering concepts such as impedance circuits and electrical analogies in the analysis of mechanical systems. In later years much of the work dealt with various aspects of underwater structures prompted by U.S. Navy interests. The field which began with classical analytical mechanics applications has progressed to new approaches including statistical energy analysis near?field acoustical holography fuzzy structures active control of vibrations and smart materials. In recognition of these new developments the name of the technical committee was changed in 1987 from Shock and Vibration to Structural Acoustics and Vibration.

2002-01-01T23:59:59.000Z

490

Acoustics of Buildings: including Acoustics of Auditoriums and Sound-proofing of Rooms  

Science Journals Connector (OSTI)

... THE acoustics of buildings is a subject which has always possessed importance, but with the increasing size of ... is a subject which has always possessed importance, but with the increasing size of public buildings and the congestion of our urban populations, it has assumed much greater importance in ...

1924-07-19T23:59:59.000Z

491

COMPARISON OF DETECTION CAPABILITY FOR ACOUSTIC THERMOGRAPHY, VISUAL INSPECTION AND FLUORESCENT PENETRANT INSPECTION ON GAS TURBINE COMPONENTS  

Science Journals Connector (OSTI)

The innovative NDE inspection system Acoustic Thermography is developed with Sonic Infrared (Sonic IR) technology. Since the probability of detection is sensitive to the flaw characteristics the fabricated flaws could not simulated the nature flaws with accuracy. The study is focus on gas turbine blades with service induced fatigue cracks. The detection capability of this innovative NDE inspection system is compared with two traditional NDE methods: Visual Inspection and Fluorescent Penetrant Inspection. POD curves for each technique were generated and compared.

Y. Guo; F. R. Ruhge

2009-01-01T23:59:59.000Z

492

Sound Science: Taking Action with Acoustics  

ScienceCinema (OSTI)

From tin whistles to sonic booms, sound waves interact with each other and with the medium through which they travel. By observing these interactions, we can identify substances that are hidden in sealed containers and obtain images of buried objects. By manipulating the ability of sound to push matter around, we can create novel structures and unique materials. Join the Lab's own sound hound, Dipen Sinha, as he describes how he uses fundamental research in acoustics for solving problems in industry, security and health.

Sinha, Dipen

2014-07-21T23:59:59.000Z

493

Acoustic identification of nine delphinid species in the eastern tropical Pacific Ocean  

Science Journals Connector (OSTI)

Acoustic techniques have the potential to increase the reliability of cetacean species identification during shipboard surveys. The whistles of nine odontocete species were compared using data collected from a towed array and sonobuoys deployed during dolphin abundance surveys in the eastern tropical Pacific. Twelve variables were measured manually from spectrographic displays of each whistle (n=912). Multivariate discriminant function analysis (DFA) resulted in 49.9% of whistles being classified to the correct species. It was hypothesized that some whistles carry less species?specific information than others therefore groups of five whistles were averaged to reduce the effect of these ambiguous whistles. Correct classification increased to 65.4% when DFA was run on the averaged data set. A species identification decision tree that used 7 of the 12 whistle variables was constructed using nonparametric techniques (classification and regression trees) and resulted in 53.1% correct classification when applied to the original data set. Prior probabilities were added to the decision tree based on sighting rates for each species in the study area resulting in 56.7% correct classification. The species identification decision tree provides a relatively simple acoustic method that can be used to augment conventional visual techniques.

2000-01-01T23:59:59.000Z

494

Montana State University Proprietary 1 Summary of Gun Shot Acoustics  

E-Print Network (OSTI)

Montana State University Proprietary 1 Summary of Gun Shot Acoustics Robert C. Maher, Montana State University 4 April 2006 Audio recordings of gun shots can provide information about the gun location interpreting such recordings arises from reverberation (overlapping acoustic signal reflections) due to the gun

Maher, Robert C.

495

Quantitative Photo-Acoustic Imaging of Small Absorbers Habib Ammari  

E-Print Network (OSTI)

Quantitative Photo-Acoustic Imaging of Small Absorbers Habib Ammari Emmanuel Bossy Vincent Jugnon Hyeonbae Kang§ December 1, 2009 Abstract In photo-acoustic imaging, energy absorption causes thermo absorber from the absorbed density. AMS subject classifications. 31B20, 35B37,35L05 Key words. photo

Kang, Hyeonbae

496

Acoustic emission monitoring of HFIR vessel during hydrostatic testing  

SciTech Connect

This report discusses the results and conclusions reached from applying acoustic emission monitoring to surveillance of the High Flux Isotope Reactor vessel during pressure testing. The objective of the monitoring was to detect crack growth and/or fluid leakage should it occur during the pressure test. The report addresses the approach, acoustic emission instrumentation, installation, calibration, and test results.

Friesel, M.A.; Dawson, J.F.

1992-08-01T23:59:59.000Z

497

Measuring the Kuroshio Current with ocean acoustic tomography Naokazu Taniguchia)  

E-Print Network (OSTI)

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

Frandsen, Jannette B.

498

Characterizing Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data  

E-Print Network (OSTI)

. TurbSim models statistics at the height of a turbine hub (5m) well, but do not model coherent eventsCharacterizing Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data Katherine Mc Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data written by Katherine McCaffrey has

Fox-Kemper, Baylor

499

Acoustic radiation force-based elasticity imaging methods  

Science Journals Connector (OSTI)

...Wells Acoustic radiation force-based elasticity imaging...lesions. Acoustic radiation force-based elasticity imaging...properties of soft tissue. In Handbook of elastic properties of solids...W. , Trahey, G. 1995 A fundamental limit on delay estimation using...

2011-01-01T23:59:59.000Z

500

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

E-Print Network (OSTI)

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

Boyer, Edmond