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


1

On the Sensitivity of Thermocline Depth and Meridional Heat Transport to Vertical Diffusivity in OGCMS  

Science Conference Proceedings (OSTI)

Aimed at a further understanding of the role of vertical diffusivity in determining the vertical structure of the thermocline circulation and meridional heat transport in ocean general circulation models (OGCMS), sensitivity of a box-basin ...

Dingming Hu

1996-08-01T23:59:59.000Z

2

Active probing of cloud multiple scattering, optical depth, vertical thickness, and liquid water content using wide-angle imaging LIDAR.  

SciTech Connect

At most optical wavelengths, laser light in a cloud lidar experiment is not absorbed but merely scattered out of the beam, eventually escaping the cloud via multiple scattering. There is much information available in this light scattered far from the input beam, information ignored by traditional 'on-beam' lidar. Monitoring these off-beam returns in a fully space- and time-resolved manner is the essence of our unique instrument, Wide Angle Imaging Lidar (WAIL). In effect, WAIL produces wide-field (60-degree full-angle) 'movies' of the scattering process and records the cloud's radiative Green functions. A direct data product of WAIL is the distribution of photon path lengths resulting from multiple scattering in the cloud. Following insights from diffusion theory, we can use the measured Green functions to infer the physical thickness and optical depth of the cloud layer, and, from there, estimate the volume-averaged liquid water content. WAIL is notable in that it is applicable to optically thick clouds, a regime in which traditional lidar is reduced to ceilometry. Here we present recent WAIL data oti various clouds and discuss the extension of WAIL to full diurnal monitoring by means of an ultra-narrow magneto-optic atomic line filter for daytime measurements.

Love, Steven P.; Davis, A. B. (Anthony B.); Rohde, C. A. (Charles A.); Tellier, L. L. (Larry L.); Ho, Cheng,

2002-01-01T23:59:59.000Z

3

GGomorphologieomorphologie True /False  

E-Print Network (OSTI)

working on them. #12;Relevance of geomorphology People live on landforms and their lives are affectedGGééomorphologieomorphologie #12;True /False 1. Geomorphology is the study of process working for thousands of years People dam rivers, drain groundwater, engineer coast- lines People plant or burn

Demouchy, Sylvie

4

Revisiting the Thermocline Depth in the Equatorial Pacific  

Science Conference Proceedings (OSTI)

The thermocline depth is defined as the depth of the maximum vertical temperature gradient. In the equatorial Pacific, the depth of 20C isotherm is widely used to represent the thermocline depth. This work proposes that under the circumstance of ...

Haijun Yang; Fuyao Wang

2009-07-01T23:59:59.000Z

5

Establishing More Truth in True Winds  

Science Conference Proceedings (OSTI)

Techniques are presented for the computation and quality control of true winds from vessels at sea. Correct computation of true winds and quality-control methods are demonstrated for complete data. Additional methods are presented for estimating ...

Shawn R. Smith; Mark A. Bourassa; Ryan J. Sharp

1999-07-01T23:59:59.000Z

6

VERTICAL GARDEN DIY CHECKLIST  

E-Print Network (OSTI)

VERTICAL GARDEN DIY CHECKLIST Vertical greenery is not a new concept; it dates back thousands-growingvarietiesbecome established. Theneedforpermissionfromcouncil, strataetc. #12;VERTICAL GARDEN DIY CHECKLIST THE PLAN

Peters, Richard

7

True Electric LLC | Open Energy Information  

Open Energy Info (EERE)

search Name True Electric LLC Place Texas Utility Id 56298 Utility Location Yes Ownership R NERC ERCOT Yes ISO Ercot Yes Activity Retail Marketing Yes References EIA Form EIA-861...

8

TrueWind Solutions | Open Energy Information  

Open Energy Info (EERE)

Center Partnership Year 2003 LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now TrueWind Solutions is a company located in Albany, NY. References...

9

Radar ReflectivityBased Estimates of Mixed Layer Depth  

Science Conference Proceedings (OSTI)

This study investigates the potential for estimating mixed layer depth by taking advantage of the radial gradients in the radar reflectivity field produced by the large vertical gradients in water vapor mixing ratio that are characteristic of the ...

P. L. Heinselman; P. L. Spencer; K. L. Elmore; D. J. Stensrud; R. M. Hluchan; P. C. Burke

2009-02-01T23:59:59.000Z

10

On the Vertical Scale of Gravity Waves Excited by Localized Thermal Forcing  

Science Conference Proceedings (OSTI)

Gravity waves generated by convective heating are widely believed to have vertical wavelengths approximately twice the depth of the heating. The frequency, horizontal, and vertical wavelengths of gravity waves are, however, mutually related ...

J. R. Holton; J. H. Beres; X. Zhou

2002-06-01T23:59:59.000Z

11

Vertical Structure of Dissipation in the Nearshore  

Science Conference Proceedings (OSTI)

The vertical structure of the dissipation of turbulence kinetic energy was observed in the nearshore region (3.2-m mean water depth) with a tripod of three acoustic Doppler current meters off a sandy ocean beach. Surface and bottom boundary layer ...

Falk Feddersen; J. H. Trowbridge; A. J. Williams III

2007-07-01T23:59:59.000Z

12

Vertical Distribution of Bacterivorous Nematodes under Different Wenju Liang,1  

E-Print Network (OSTI)

Vertical Distribution of Bacterivorous Nematodes under Different Land Uses Wenju Liang,1 Xiaoke Zhang,1,3 Qi Li,1,3 Yong Jiang,1 Wei Ou,1,3 and Deborah A. Neher2 Abstract: The vertical distribution. In contrast, Chiloplacus and Prismatolaimus spp. were distributed down to 100-cm depth in the AC and CM

Neher, Deborah A.

13

Vertical axis wind turbines  

DOE Patents (OSTI)

A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.

Krivcov, Vladimir (Miass, RU); Krivospitski, Vladimir (Miass, RU); Maksimov, Vasili (Miass, RU); Halstead, Richard (Rohnert Park, CA); Grahov, Jurij (Miass, RU)

2011-03-08T23:59:59.000Z

14

Definition: Vertical Electrical Sounding Configurations | Open Energy  

Open Energy Info (EERE)

Sounding Configurations Sounding Configurations Jump to: navigation, search Dictionary.png Vertical Electrical Sounding Configurations A vertical electrical sounding (VES) is a DC resistivity survey which provides information regarding the change in apparent resistivity with depth. A quantitative interpretation of the results from VES measurements enable determination of the parameters for the geoelectric section.[1] Also Known As VES; Schlumberger Sounding References ↑ http://www.nga.com/Flyers_PDF/NGA_DC_Resistivity.pdf http://www.amazon.com/Principles-Electric-Borehole-Geophysics-Geochemistry/dp/0444529942 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Vertical_Electrical_Sounding_Configurations&oldid=596183

15

ARM - Measurement - Vertical velocity  

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

govMeasurementsVertical velocity govMeasurementsVertical velocity ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Vertical velocity The component of the velocity vector, along the local vertical. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System KAZR : Ka ARM Zenith Radar MMCR : Millimeter Wavelength Cloud Radar SODAR : Mini Sound Detection and Ranging

16

Vertically Rising Microstructure Profiler  

Science Conference Proceedings (OSTI)

The vertically rising microstructure profiler was designed to measure temperature gradient and conductivity gradient microstructure in lakes, reservoirs and coastal seas. The instrument is totally independent of surface craft while collecting ...

G. D. Carter; J. Imberger

1986-09-01T23:59:59.000Z

17

Bottom Stress in Wind-Driven Depth-Averaged Coastal Flows  

Science Conference Proceedings (OSTI)

The relationship between depth-averaged velocity and bottom stress for purely wind-driven flows in unstratified coastal waters is examined using a one-dimensional (vertically resolving) current model. Results indicate that conventional drag laws ...

Harry L. Jenter; Ole Secher Madsen

1989-07-01T23:59:59.000Z

18

Evaluations of Mesoscale Models' Simulations of Near-Surface Winds, Temperature Gradients, and Mixing Depths  

Science Conference Proceedings (OSTI)

Mesoscale meteorological models are being used to provide inputs of winds, vertical temperature and stability structure, mixing depths, and other parameters to atmospheric transport and dispersion models. An evaluation methodology is suggested ...

Steven R. Hanna; Ruixin Yang

2001-06-01T23:59:59.000Z

19

Commissioning and dosimetric characteristics of TrueBeam system: Composite data of three TrueBeam machines  

Science Conference Proceedings (OSTI)

Purpose: A TrueBeam linear accelerator (TB-LINAC) is designed to deliver traditionally flattened and flattening-filter-free (FFF) beams. Although it has been widely adopted in many clinics for patient treatment, limited information is available related to commissioning of this type of machine. In this work, commissioning data of three units were measured, and multiunit comparison was presented to provide valuable insights and reliable evaluations on the characteristics of the new treatment system. Methods: The TB-LINAC is equipped with newly designed waveguide, carousel assembly, monitoring control, and integrated imaging systems. Each machine in this study has 4, 6, 8, 10, 15 MV flattened photon beams, and 6 MV and 10 MV FFF photon beams as well as 6, 9, 12, 16, 20, and 22 MeV electron beams. Dosimetric characteristics of the three new TB-LINAC treatment units are systematically measured for commissioning. High-resolution diode detectors and ion chambers were used to measure dosimetric data for a range of field sizes from 10 Multiplication-Sign 10 to 400 Multiplication-Sign 400 mm{sup 2}. The composite dosimetric data of the three units are presented in this work. The commissioning of intensity modulated radiotherapy (IMRT), volumetric modulated arc therapy (VMAT), image-guided radiation therapy, and gating systems are also illustrated. Critical considerations of P{sub ion} of FFF photon beams and small field dosimetric measurements were investigated. Results: The authors found all PDDs and profiles matched well among the three machines. Beam data were quantitatively compared and combined through average to yield composite beam data. The discrepancies among the machines were quantified using standard deviation (SD). The mean SD of the PDDs among the three units is 0.12%, and the mean SD of the profiles is 0.40% for 10 MV FFF open fields. The variations of P{sub ion} of the chamber CC13 is 1.2 {+-} 0.1% under 6 MV FFF and 2.0 {+-} 0.5% under 10 MV FFF from dmax to the 18 cm-off-axis point at 35 cm depth under 40 Multiplication-Sign 40 cm{sup 2}. The mean penumbra of crossplane flattened photon beams at collimator angle of 0 Degree-Sign is measured from 5.88 {+-} 0.09 to 5.99 {+-} 0.13 mm from 4 to 15 MV at 10 cm depth of 100 Multiplication-Sign 100 mm{sup 2}. The mean penumbra of crossplane beams at collimator angle of 0 Degree-Sign is measured as 3.70 {+-} 0.21 and 4.83 {+-} 0.04 mm for 6 MV FFF and 10 MV FFF, respectively, at 10 cm depth with a field size of 5 Multiplication-Sign 5 cm{sup 2}. The end-to-end test procedures of both IMRT and VMAT were performed for various energy modes. The mean ion chamber measurements of three units showed less than 2% between measurement and calculation; the mean MultiCube ICA measurements demonstrated over 90% pixels passing gamma analysis (3%, 3 mm, 5% threshold). The imaging dosimetric data of KV planar imaging and CBCT demonstrated improved consistency with vendor specifications and dose reduction for certain imaging protocols. The gated output verification showed a discrepancy of 0.05% or less between gating radiation delivery and nongating radiation delivery. Conclusions: The commissioning data indicated good consistency among the three TB-LINAC units. The commissioning data provided us valuable insights and reliable evaluations on the characteristics of the new treatment system. The systematically measured data might be useful for future reference.

Chang Zheng; Wu Qiuwen; Adamson, Justus; Ren Lei; Bowsher, James; Yan Hui; Thomas, Andrew; Yin Fangfang [Department of Radiation Oncology, Duke University, Durham, North Carolina 27710 (United States)

2012-11-15T23:59:59.000Z

20

Performance analysis of compositional and modified black-oil models for rich gas condensate reservoirs with vertical and horizontal wells  

E-Print Network (OSTI)

It has been known that volatile oil and gas condensate reservoirs cannot be modeled accurately with conventional black-oil models. One variation to the black-oil approach is the modified black-oil (MBO) model that allows the use of a simple, and less expensive computational algorithm than a fully compositional model that can result in significant timesaving in full field studies. The MBO model was tested against the fully compositional model and performances of both models were compared using various production and injection scenarios for a rich gas condensate reservoir. The software used to perform the compositional and MBO runs were Eclipse 300 and Eclipse 100 versions 2002A. The effects of black-oil PVT table generation methods, uniform composition and compositional gradient with depth, initialization methods, location of the completions, production and injection rates, kv/kh ratios on the performance of the MBO model were investigated. Vertical wells and horizontal wells with different drain hole lengths were used. Contrary to the common belief that oil-gas ratio versus depth initialization gives better representation of original fluids in place, initializations with saturation pressure versus depth gave closer original fluids in place considering the true initial fluids in place are given by the fully compositional model initialized with compositional gradient. Compared to the compositional model, results showed that initially there was a discrepancy in saturation pressures with depth in the MBO model whether it was initialized with solution gas-oil ratio (GOR) and oil-gas ratio (OGR) or dew point pressure versus depth tables. In the MBO model this discrepancy resulted in earlier condensation and lower oil production rates than compositional model at the beginning of the simulation. Unrealistic vaporization in the MBO model was encountered in both natural depletion and cycling cases. Oil saturation profiles illustrated the differences in condensate saturation distribution for the near wellbore area and the entire reservoir even though the production performance of the models was in good agreement. The MBO model representation of compositional phenomena for a gas condensate reservoir proved to be successful in the following cases: full pressure maintenance, reduced vertical communication, vertical well with upper completions, and producer set as a horizontal well.

Izgec, Bulent

2003-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Vertical Velocity Focus Group  

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

Velocity Focus Group Velocity Focus Group ARM 2008 Science Team Meeting Norfolk, VA March 10-14 Background Vertical velocity measurements have been at the top of the priority list of the cloud modeling community for some time. Doppler measurements from ARM profiling radars operating at 915-MHz, 35-GHz and 94-GHz have been largely unexploited. The purpose of this new focus group is to develop vertical velocity ARM products suitable for modelers. ARM response to their request has been slow. Most ARM instruments are suitable for cloud observations and have limited capabilities in precipitation Using ARM datasets for evaluating and improving cloud parameterization in global climate models (GCMs) is not straightforward, due to gigantic scale mismatches. Consider this... Looking only vertically drastically limits opportunities

22

True grit: Brock is climbing her way to success  

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

True grit: Brock is climbing her way to success True grit: Brock is climbing her way to success True grit: Brock is climbing her way to success Biology student and radiation physics intern Burgandy Brock tackles challenges with gusto, in the field, in the classroom and in life. August 27, 2013 True grit: Brock is climbing her way to success Biology student and radiation physics intern Burgandy Brock tackles challenges with gusto, in the field, in the classroom and in life. An avid outdoorswoman who loves adrenaline sports such as rock climbing, the Los Alamos native respects the Lab and the foundation it provides. » Return to homepage Undeterred by life's challenges, student pursues complex science Los Alamos Environmental Stewardship intern Burgandy Brock has a lot on her plate, but that hasn't diminished her drive to learn more about all types

23

The truth about 'The truth about true blue'  

E-Print Network (OSTI)

chardin1@twcny.rr.com Brian P. McLaughlin Rutgers UniversityHardin, C. L. , and McLaughlin, B. P. (2006). True colors.L. Hardin, and Brian P. McLaughlin ? Color, Variation, and

Cohen, Jonathan; Hardin, C. L.; McLaughlin, Brian P.

2007-01-01T23:59:59.000Z

24

Composite Vertical Structure of Vertical Velocity in Nonprecipitating Cumulus Clouds  

Science Conference Proceedings (OSTI)

Vertical transects of Doppler vertical velocity data, obtained from an airborne profiling millimeter-wave cloud radar, are composited for a large number of cumulus clouds (Cu) at various stages of their life cycle, to examine typical circulations ...

Yonggang Wang; Bart Geerts

2013-05-01T23:59:59.000Z

25

Vertical Heat Transport by Ocean Circulation and the Role of Mechanical and Haline Forcing  

Science Conference Proceedings (OSTI)

Vertical transport of heat by ocean circulation is investigated using a coupled climate model and novel thermodynamic methods. Using a streamfunction in temperaturedepth coordinates, cells are identified by whether they are thermally direct (flux ...

Jan D. Zika; Willem P. Sijp; Matthew H. England

2013-10-01T23:59:59.000Z

26

Vertical Heat Transport by the Ocean Circulation and the Role of Mechanical and Haline Forcing  

Science Conference Proceedings (OSTI)

Vertical transport of heat by the ocean circulation is investigated using a coupled-climate model and novel thermodynamic methods. Using a streamfunction in temperature-depth coordinates, cells are identified by whether they are thermally direct (...

Jan D. Zika; Willem P. Sijp; Matthew H. England

27

Gulf of Mexico Proved Reserves By Water Depth, 2009  

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

Gulf of Mexico Proved Reserves and Production by Water Depth, 2009 Gulf of Mexico Proved Reserves and Production by Water Depth, 2009 1 Gulf of Mexico Proved Reserves and Production by Water Depth The Gulf of Mexico Federal Offshore region (GOM Fed) has long been one of the Nation's principal sources of proved reserves. At the end of 2009, the GOM Fed accounted for close to one-fifth of oil proved reserves (second only to Texas) and just over four percent of natural gas proved reserves (the country's seventh largest reporting region). 1 Natural gas proved reserves from the GOM Fed have gradually diminished, both volumetrically and as a percentage of overall U.S. proved reserves. The latter is especially true in recent years as onshore additions (particularly those associated with shale gas activity) have increased considerably. Proved oil reserves from

28

True-Temperature Determination Of Geothermal Reservoirs | 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 » True-Temperature Determination Of Geothermal Reservoirs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: True-Temperature Determination Of Geothermal Reservoirs Details Activities (0) Areas (0) Regions (0) Abstract: Parameters governing the resistivity in geothermal areas are analyzed. A method for the calculation of the true temperature of geothermal reservoirs is explained, and the effectiveness of the method is evidenced. Author(s): Jin Doo Jung Published: Geoexploration, 1977 Document Number: Unavailable DOI: 10.1016/0016-7142(77)90002-3 Source: View Original Journal Article

29

Crayola's True Color Shines Through: Green | Department of Energy  

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

Crayola's True Color Shines Through: Green Crayola's True Color Shines Through: Green Crayola's True Color Shines Through: Green August 13, 2010 - 10:00am Addthis The Crayola solar farm became fully operational this week. Ten children from around the country, known as the "Crayola Green Team," helped dedicate the newest addition to the Easton, Pa.-plant. Photos courtesy of Crayola. | Photo Courtesy of Crayola The Crayola solar farm became fully operational this week. Ten children from around the country, known as the "Crayola Green Team," helped dedicate the newest addition to the Easton, Pa.-plant. Photos courtesy of Crayola. | Photo Courtesy of Crayola Stephen Graff Former Writer & editor for Energy Empowers, EERE What does this project do? The solar panels produce enough energy to produce 1 billion crayons

30

On Rayleigh Optical Depth Calculations  

Science Conference Proceedings (OSTI)

Many different techniques are used for the calculation of Rayleigh optical depth in the atmosphere. In some cases differences among these techniques can be important, especially in the UV region of the spectrum and under clean atmospheric ...

Barry A. Bodhaine; Norman B. Wood; Ellsworth G. Dutton; James R. Slusser

1999-11-01T23:59:59.000Z

31

A Model Comparison: Numerical Simulations of the North and Equatorial Atlantic Oceanic Circulation in Depth and Isopycnic Coordinates  

Science Conference Proceedings (OSTI)

A series of medium-resolution (1) numerical simulations for the equatorial and North Atlantic basin have been performed with two primitive equation models, one employing depth and the other density as the vertical coordinate. The models have ...

Eric P. Chassignet; Linda T. Smith; Rainer Bleck; Frank O. Bryan

1996-09-01T23:59:59.000Z

32

Aerosol Optical Depth over Oceans: High Space- and Time-Resolution Retrieval and Error Budget from Satellite Radiometry  

Science Conference Proceedings (OSTI)

A method to retrieve aerosol vertical optical depth at 0.64 ?m from satellite observations of cloud-free scenes over oceans with high spatial resolution (1) and instantaneous temporal resolution is described and evaluated. The observed radiance ...

Richard Wagener; Seth Nemesure; Stephen E. Schwartz

1997-06-01T23:59:59.000Z

33

Engines - Particulate Studies - Revealing the True Nature of Diesel  

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

Engine Nanoparticle Research: Revealing the True Nature of Diesel Particulates Engine Nanoparticle Research: Revealing the True Nature of Diesel Particulates Thermophoretic sampling device Argonne's test engine with the thermophoretic sampling device attached. Nanostructure of graphitic diesel soot under high engine load A transmission electron microscope reveals the nanostructures of graphitic diesel soot sampled under high engine loads. Morphology of particles collected from diesel combustion with iso-paraffin-enriched fuel. Morphology of particles collected from diesel combution with iso-paraffin-enriched fuel. Amorphous soot particle collected from biodiesel combustion undera low-temperature condition. Amorphous soot particle collected from biodiesel combustion under low temperature conditions. Researchers have many ideas about how to reduce the soot produced by diesel

34

ON THE TRUE SHAPE OF X-RAY SPECTRA  

SciTech Connect

A method for obtaining the true shape of x-ray spectra was developed for the particular case of dispersive distortions. The method is of value in the correction of the shape of the spectrum for the distortion introduced by the outside level of the atom and in showing the correct shape of the energy dependence of the density of states n(E)p(E) where p(E) is the probability of the corresponding transition. (J.S.R.)

Blokhin, M.A.

1956-03-01T23:59:59.000Z

35

Two-photon interference with true thermal light  

E-Print Network (OSTI)

Two-photon interference and "ghost" imaging with entangled light have attracted much attention since the last century because of the novel features such as non-locality and sub-wavelength effect. Recently, it has been found that pseudo-thermal light can mimic certain effects of entangled light. We report here the first observation of two-photon interference with true thermal light.

Yan-Hua Zhai; Xi-Hao Chen; Da Zhang; Ling-An Wu

2005-06-07T23:59:59.000Z

36

ARM - Measurement - Cloud optical depth  

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

optical depth optical depth ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud optical depth Amount of light cloud droplets or ice particles prevent from passing through a column of atmosphere. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments GOES : Geostationary Operational Environmental Satellites Field Campaign Instruments EC-CONVAIR580-BULK : Environment Canada Convair 580 Bulk Parameters GOES : Geostationary Operational Environmental Satellites

37

ARM - Measurement - Aerosol optical depth  

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

depth depth ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol optical depth A measure of how much light aerosols prevent from passing through a column of atmosphere. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments HSRL : High Spectral Resolution Lidar MPL : Micropulse Lidar MFRSR : Multifilter Rotating Shadowband Radiometer NIMFR : Normal Incidence Multifilter Radiometer Field Campaign Instruments AOS-PMFOV : Acoustical Optical Spectrometer-Photometer with Multiple

38

Correlated two-photon imaging with true thermal light  

E-Print Network (OSTI)

We report the first experimental demonstration of two-photon correlated imaging with true thermal light from a hollow cathode lamp. The coherence time of the source is much shorter than that of previous experiments using random scattered light from a laser. A two-pinhole mask was used as object, and the corresponding thin lens equation was well satisfied. Since thermal light sources are easier to obtain and measure than entangled light it is conceivable that they may be used in special imaging applications.

Da Zhang; Xi-Hao Chen; Yan-Hua Zhai; Ling-An Wu

2005-03-14T23:59:59.000Z

39

Vertical Coordinate Transformation of Vertically-Discretized Atmospheric Fields  

Science Conference Proceedings (OSTI)

The problem of transforming fields of atmospheric variables from one vertical coordinate system to another without altering their dynamic balance is discussed. A curve fitting scheme applied to the data points in each grid column is proposed ...

Rainer Bleck

1984-12-01T23:59:59.000Z

40

Magnetic depth profile in GaMnAs layers with vertically graded ...  

Science Conference Proceedings (OSTI)

... of the sample, so we must orient the magnetization to the in-plane direction using a saturating magnetic field (in the case of this sample, 100 mT) . ...

2012-08-06T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Vertical axis wind turbine airfoil  

DOE Patents (OSTI)

A vertical axis wind turbine airfoil is described. The wind turbine airfoil can include a leading edge, a trailing edge, an upper curved surface, a lower curved surface, and a centerline running between the upper surface and the lower surface and from the leading edge to the trailing edge. The airfoil can be configured so that the distance between the centerline and the upper surface is the same as the distance between the centerline and the lower surface at all points along the length of the airfoil. A plurality of such airfoils can be included in a vertical axis wind turbine. These airfoils can be vertically disposed and can rotate about a vertical axis.

Krivcov, Vladimir; Krivospitski, Vladimir; Maksimov, Vasili; Halstead, Richard; Grahov, Jurij Vasiljevich

2012-12-18T23:59:59.000Z

42

Influence of a local change of depth on the behavior of bouncing oil drops  

E-Print Network (OSTI)

The work of Couder \\textit{et al} (see also Bush \\textit{et al}) inspired consideration of the impact of a submerged obstacle, providing a local change of depth, on the behavior of oil drops in the bouncing regime. In the linked videos, we recreate some of their results for a drop bouncing on a uniform depth bath of the same liquid undergoing vertical oscillations just below the conditions for Faraday instability, and show a range of new behaviors associated with change of depth. This article accompanies a fluid dynamics video entered into the Gallery of Fluid Motion of the 66th Annual Meeting of the APS Division of Fluid Dynamics.

Carmigniani, Remi; Symon, Sean; McKeon, Beverley J

2013-01-01T23:59:59.000Z

43

Numerical modeling of a true in situ oil shale retort  

DOE Green Energy (OSTI)

A numerical model has been developed to simulate the true in situ retorting process. The retort is assumed to be a low-porosity fractured bed composed of large seams of competent shale separated at intervals by open fractures. Kerogen and carbonate decomposition and char, oil, and gas combustion, as well as other reactions, are considered. In contrast to the results of rubbled-bed models, the retorting of seams thicker than one meter is characterized by incomplete retorting and significant oil combustion (10 to 40% of that retorted). The amount of shale retorted can, however, be maximized by proper control of air and steam injection rates, with the injected gas being optimally 40 to 50% steam. The oil available for recovery from a two meter seam can then be, for example, as high as 50% of Fischer Assay.

Tyner, C.E.; Hommert, P.J.

1979-01-01T23:59:59.000Z

44

Stable Boundary Layer Depth from High-Resolution Measurements of the Mean Wind Profile  

Science Conference Proceedings (OSTI)

The depth h of the stable boundary layer (SBL) has long been an elusive measurement. In this diagnostic study the use of high-quality, high-resolution (?z = 10 m) vertical profile data of the mean wind U(z) and streamwise variance ?u2(z) is ...

Yelena L. Pichugina; Robert M. Banta

2010-01-01T23:59:59.000Z

45

Definition: Vertical Flowmeter Test | Open Energy Information  

Open Energy Info (EERE)

Edit with form History Facebook icon Twitter icon Definition: Vertical Flowmeter Test Jump to: navigation, search Dictionary.png Vertical Flowmeter Test A well testing...

46

Vertical Flowmeter Logging | Open Energy Information  

Open Energy Info (EERE)

2013 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Vertical Flowmeter Logging Citation U.S. Geological Survey. Vertical...

47

Depth enhancement techniques for the in situ vitrification process  

SciTech Connect

In-situ vitrification (ISV) is a process by which electrical energy is supplied to a soil/waste matrix. The resulting Joule heat raises the temperature of the soil/waste matrix, producing a pool of molten soil. Since its inception, there have been many successful applications of the technology to both staged and actual waste sites. However, there has been some difficulty in extending the attainable treatment melt depth to levels greater than 5 m. Results obtained from application of two novel approaches for extending the ultimate treatment depth attainable with in-situ vitrification (ISV) are presented. In the first, the electrode design is modified to concentrate the Joule heat energy delivered to the soil/waste matrix in the lower region of the target melt zone. This electrode design has been dubbed the hot-tip electrode. Results obtained from both computational and experimental investigations of this design concept indicate that some benefit toward ISV depth enhancement was realized with these hot-tip electrodes. A second, alternative approach to extending process depth with ISV involves initiating the melt at depth and propagating it in either vertical direction (e.g., downward, upward, or both) to treat the target waste zone. A series of engineering-scale experiments have been conducted to assess the benefits of this approach. The results from these tests indicate that ISV may be effectively initiated and sustained using this subsurface start-up technique. A survey of these experiments and the associated results are presented herein, together with brief discussion of some considerations regarding setup and implementation of this subsurface start-up technique.

Lowery, P.S.; Luey, J.; Seiler, D.K.; Tixier, J.S. [Pacific Northwest Lab., Richland, WA (United States); Timmerman, C.L. [Geosafe Corp., Richland, WA (United States)

1994-11-01T23:59:59.000Z

48

Human activities recognition using depth images  

Science Conference Proceedings (OSTI)

We present a new method to classify human activities by leveraging on the cues available from depth images alone. Towards this end, we propose a descriptor which couples depth and spatial information of the segmented body to describe a human pose. Unique ... Keywords: depth image segmentation, human activity detection

Raj Gupta; Alex Yong-Sang Chia; Deepu Rajan

2013-10-01T23:59:59.000Z

49

Uterine caliper and depth gauge  

DOE Patents (OSTI)

A uterine caliper and sound consisting of an elongated body having outwardly biased resilient caliper wings and a spring-loaded slidable cervical stop. A slide on the body is operatively connected to the wings by a monofilament and operates with respect to a first scale on the body as a width indicator. A rod extending longitudinally on the body is connected to the cervical stop and cooperates with a second scale on the body as a depth indicator. The instrument can be positioned to measure the distance from the outer cervical ostium to the fundus, as read on said second scale. The wings may be allowed to open by moving the slide, and when the wings engage the utero-tubal junctions, the width may be read on said first scale. By adjustment of the caliper wings the instrument may be retracted until the resistance of the inner ostium of the cervix is felt, enabling the length of the cervical canal to be read directly by the position of the longitudinal indicator rod with respect to said second scale. The instrument may be employed to measure the width of the uterine cavity at any position between the inner ostium of the cervix and the fundus.

King, Loyd L. (Benton City, WA); Wheeler, Robert G. (Richland, WA); Fish, Thomas M. (Kennewick, WA)

1977-01-01T23:59:59.000Z

50

True solar analogues in the open cluster M67  

E-Print Network (OSTI)

The solar analogues are fundamental targets for a better understanding of our Sun and Solar System. Notwithstanding the efforts, this research is usually limited to field stars. The open cluster M67 offers a unique opportunity to search for solar analogues because its chemical composition and age are very similar to those of our star. In this work, we analyze FLAMES@VLT spectra of about one hundred of M67 main sequence stars with the aim to identify solar analogues. We first determine cluster members which are likely not binaries, by combining both proper motions and radial velocity measurements. Then, we concentrate our analysis on the determination of stellar effective temperature, using the analyzes of line-depth ratios and Halpha wings. Finally, we also compute lithium abundance for all the stars. Thanks to the our analysis, we find ten solar analogues, which allow us to derive a solar color (B-V)=0.649+/-0.016 and a cluster distance modulus of 9.63+/-0.08, very close to values found by previous authors. Among them, five are the best solar twins with temperature determinations within 60 K from the solar values. Our results lead us to do further spectroscopic investigations because the solar analogues candidates are suitable for planet search.

K. Biazzo; L. Pasquini; P. Bonifacio; S. Randich; L. R. Bedin

2008-07-07T23:59:59.000Z

51

Vertical niche partitioning between cryptic sibling species of a cosmopolitan marine planktonic protist  

E-Print Network (OSTI)

Vertical niche partitioning between cryptic sibling species of a cosmopolitan marine planktonic the cryptic genetic diversity within morphological species, many genetic types are cosmopolitan, lending. By depth-stratified sampling, we present evidence that sibling genetic types in a cosmopolitan species

Miller, Thomas E.

52

Test plan for the 34 meter vertical axis wind turbine test bed located at Bushland, Texas  

DOE Green Energy (OSTI)

A plan is presented for the testing and evaluation of a new 500 kw vertical axis wind turbine test bed. The plan starts with the initial measurements made during construction, proceeds through evaluation of the design, the development of control methods, and finally to the test bed phase where new concepts are evaluated and in-depth studies are performed.

Stephenson, W.A.

1986-12-01T23:59:59.000Z

53

Kinematic Fitting of Detached Vertices  

SciTech Connect

The eg3 experiment at the Jefferson Lab CLAS detector aims to determine the existence of the $\\Xi_{5}$ pentaquarks and investigate the excited $\\Xi$ states. Specifically, the exotic $\\Xi_{5}^{--}$ pentaquark will be sought by first reconstructing the $\\Xi^{-}$ particle through its weak decays, $\\Xi^{-}\\to\\pi^{-}\\Lambda$ and $\\Lambda\\to\\pi^{-}$. A kinematic fitting routine was developed to reconstruct the detached vertices of these decays, where confidence level cuts on the fits are used to remove background events. Prior to fitting these decays, the exclusive reaction $\\gamma D\\rightarrow pp\\pi^{-}$ was studied in order to correct the track measurements and covariance matrices of the charged particles. The $\\Lambda\\rightarrow p\\pi^{-}$ and $\\Xi^{-}\\to\\pi^{-}\\Lambda$ decays were then investigated to demonstrate that the kinematic fitting routine reconstructs the decaying particles and their detached vertices correctly.

Paul Mattione

2007-05-01T23:59:59.000Z

54

Methods for the Reconstruction of Vertical Profiles from Surface Data: Multivariate Analyses, Residual GEM, and Variable Temporal Signals in the North Pacific Ocean  

Science Conference Proceedings (OSTI)

Different methods for the extrapolation of vertical profiles from sea surface measurements have been tested on 14 yr of conductivitytemperaturedepth (CTD) data collected within the Hawaii Ocean Time-series (HOT) program at A Long-Term ...

Bruno Buongiorno Nardelli; Rosalia Santoleri

2005-11-01T23:59:59.000Z

55

Vertical Flow Wetland Pilot Study  

Science Conference Proceedings (OSTI)

This is an interim report to present the preliminary results of a study conducted by Duke Energy to test the potential effectiveness of vertical flow wetlands (VFWs) for the removal of selenium, mercury, and other related compounds from a flue gas desulfurization (FGD) discharge. These compounds commonly are found in and regulated for coal-fired utility water discharges. There is a widespread need for a cost-effective alternative to physiochemical treatment to maintain compliance for these parameters, on...

2008-12-08T23:59:59.000Z

56

Mapping the Interior of Nanocrystals in Depth  

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

of Nanocrystals in Depth Complex, three-dimensional images of the interior of a nanocrystal have, for the first time, been obtained by researchers employing a new technique:...

57

Extending Depth of Field via Multifocus Fusion.  

E-Print Network (OSTI)

??In digital imaging systems, due to the nature of the optics involved, the depth of field is constricted in the field of view. Parts of (more)

Hariharan, Harishwaran

2011-01-01T23:59:59.000Z

58

Review and analysis of oil shale technologies. Volume II. True in situ technology  

SciTech Connect

This volume is a technical review and economic analysis of current true in-situ shale technology. Three techniques involving different fracturing methods are compared. Key variables include air compression, drilling depth, drill hole diameter and pattern geometry, shale grade, shale bed thickness, and explosives requirements. Variables, process systems, and process steps defined for each fracturing technique are scaled up to a 64,000-bbl/day facility and costed to provide a basis for evaluating relative economic feasibility. Capital investment, capital depreciation, annual operating, and crude shale oil costs are estimated and compared. The economic evaluation reveals that the choice of fracturing technique does not have any significant effect on the crude oil shale prices estimated for the scaled-up facilities. The costs per barrel vary only about 10%, with the lowest being the facility using the wellbore springing-explosive technique at $19 and the highest being the facility using the underreaming-explosive technique at $21. From a technical standpoint, the combination of hydraulic fracturing and explosive rubblization has the best potential for improvement. A major finding in this evaluation is that high costs associated with compression of the injection gas and drilling strongly influence process economics and, subsequently, crude oil selling prices for all techniques. The actual amount of oil recovered or extracted from the shale is also a major economic factor. The study concludes that the logistics of a commercial operation and the inability to create adequate permeability and surface area by any of the three fracturing techniques evaluated appear to be limiting factors, and that current technology has little potential for technical or economic success. 25 tables, 17 figures.

Jee, C.K.; White, J.D.; Bhatia, S.K.; Nicholson, D.

1977-08-01T23:59:59.000Z

59

Vertically Aligned Nanocomposite Thin Films  

E-Print Network (OSTI)

Vertically aligned nanocomposite (VAN) thin films have recently stimulated significant research interest to achieve better material functionality or multifunctionalities. In VAN thin films, both phases grow epitaxially in parallel on given substrates and form a unique nano-checkerboard structure. Multiple strains, including the vertical strain which along the vertical interface and the substrate induced strain which along the film and substrate interface, exist in VAN thin films. The competition of these strains gives a promise to tune the material lattice structure and future more the nanocomposite film physical properties. Those two phases in the VAN thin films are selected based on their growth kinetics, thermodynamic stability and epitaxial growth ability on given substrates. In the present work, we investigated unique epitaxial two-phase VAN (BiFeO3)x:(Sm2O3)1-x and (La0.7Sr0.3MnO3)x:(Mn3O4)1-x thin film systems by pulsed laser deposition. These VAN thin films exhibit a highly ordered vertical columnar structure with good epitaxial quality. The strain of the two phases can be tuned by deposition parameters, e.g. deposition frequency and film composition. Their strain tunability is found to be related directly to the systematic variation of the column widths and domain structures. Their physical properties, such as dielectric loss and ferromagnetisms can be tuned systematically by this variation. The growth morphology, microstructure and material functionalities of VAN thin films can be varied by modifying the phase ratio, substrate orientation or deposition conditions. Systematic study has been done on growing (SrTiO3)0.5:(MgO)0.5 VAN thin films on SrTiO3 and MgO substrates, respectively. The variation of column width demonstrates the substrate induced strain plays another important role in the VAN thin film growth. The VAN thin films also hold promise in achieving porous thin films with ordered nanopores by thermal treatment. We selected (BiFeO3)0.5:(Sm2O3)0.5 VAN thin films as a template and get uniformly distributed bi-layered nanopores. Controllable porosity can be achieved by adjusting the microstructure of VAN (BiFeO3):(Sm2O3) thin films and the annealing parameters. In situ heating experiments within a transmission electron microscope column provide direct observations into the phases transformation, evaporation and structure reconstruction during the annealing. Systematic study in this dissertation demonstrate that the vertically aligned nanocomposite microstructure is a brand new architecture in thin films and an exciting approach that promises tunable material functionalities as well as novel nanostructures.

Bi, Zhenxing

2011-05-01T23:59:59.000Z

60

Determining Vertical Water Velocities from Seaglider  

Science Conference Proceedings (OSTI)

Vertical velocities in the worlds oceans are typically small, less than 1 cm s?1, posing a significant challenge for observational techniques. Seaglider, an autonomous profiling instrument, can be used to estimate vertical water velocity in the ...

Eleanor Frajka-Williams; Charles C. Eriksen; Peter B. Rhines; Ramsey R. Harcourt

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Vertical Motion of Neutrally Buoyant Floats  

Science Conference Proceedings (OSTI)

The vertical motion of a neutrally buoyant float is determined from the solution to the nonlinear forced harmonic oscillator equation originally set forth by Voorhis. Float response to forced vertical oscillations is characterized by the response ...

Louis Goodman; Edward R. Levine

1990-02-01T23:59:59.000Z

62

Vertical Normal Mode Transforms: Theory and Application  

Science Conference Proceedings (OSTI)

The separation of the vertical structure of the, solutions of the primitive (hydrostatic) meteorological equations is formalized as a vertical normal-mode transform. The transform is implemented for arbitrary static stability profiles by the ...

Scott R. Fulton; Wayne H. Schubert

1985-04-01T23:59:59.000Z

63

Vertically Aligned and Periodically Distributed Carbon Nanotube  

Science Conference Proceedings (OSTI)

Presentation Title, Vertically Aligned and Periodically Distributed Carbon Nanotube (CNT) ... Application of Carbon Nanotubes Energy to Bioelectronic Sensor.

64

Recommended Practice: Defense-in-Depth  

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

Report # INL/EXT-06-11478 Report # INL/EXT-06-11478 Control Systems Cyber Security: Defense in Depth Strategies May 2006 Prepared by Idaho National Laboratory Recommended Best Practice: Defense in Depth 2 Table of Contents Keywords............................................................................................................................. 3 Introduction......................................................................................................................... 3 Background ......................................................................................................................... 3 Overview of Contemporary Control System Architectures................................................. 4 Security Challenges in Control Systems .............................................................................

65

Vertical Circuits Inc | Open Energy Information  

Open Energy Info (EERE)

Circuits Inc Circuits Inc Jump to: navigation, search Name Vertical Circuits, Inc. Place Scotts Valley, California Zip 95066 Sector Services Product Vertical Circuits Inc. is a global supplier of advanced die level vertical interconnect packaging technology, products, services and intellectual property for the manufacture of low cost ultra high-speed/high-density semiconductor components. References Vertical Circuits, Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Vertical Circuits, Inc. is a company located in Scotts Valley, California . References ↑ "Vertical Circuits, Inc." Retrieved from "http://en.openei.org/w/index.php?title=Vertical_Circuits_Inc&oldid=352802"

66

Measuring the true managerial efficiency of bank branches in Taiwan: A three-stage DEA analysis  

Science Conference Proceedings (OSTI)

This paper aims to explore the true managerial efficiencies of the branches of a case bank in Taiwan. With 123 branches of the case bank comprising the sample, the study finds that, after the adjustment of environmental factors and statistical noise, ... Keywords: Bank branches, Environmental variables, Malmquist productivity index, Stochastic frontier approach, Three-stage data envelopment analysis, True managerial efficiency

Jonchi Shyu; Terri Chiang

2012-10-01T23:59:59.000Z

67

Vertical movement along the Cerro Prieto transform fault, Baja California, Mexico - a mechanism for geothermal energy renewal  

DOE Green Energy (OSTI)

Data from 53 geothermal wells to depths of 1 to 3 km on either side of the right-lateral Cerro Prieto fault, as well as geophysical data, indicate vertical displacements of this fault of 400 to 600 m. This episoidic vertical movement has offset deltaic sandstone reservoirs that are primarily at 1200 m and 1800 m depth and contain 250{sup 0} to 345{sup 0}C water. A major fracture system for convective fluid movement has been thus maintained, with production at 150 MW.

Vonder Haar, S.; Noble, J.E.; Puente Cruz, I.

1979-03-01T23:59:59.000Z

68

Practical Conversion of Pressure to Depth  

Science Conference Proceedings (OSTI)

A conversion formula between pressure and depth is obtained employing the recently adopted equation of state for seawater (Millero et al., 1980). Assuming the ocean of uniform salinity 35 NSU and temperature 0C the following equation is proposed,...

Peter M. Saunders

1981-04-01T23:59:59.000Z

69

The Underway ConductivityTemperatureDepth Instrument  

Science Conference Proceedings (OSTI)

The development of the Underway ConductivityTemperatureDepth (UCTD) instrument is motivated by the desire for inexpensive profiles of temperature and salinity from underway vessels, including volunteer observing ships (VOSs) and research ...

Daniel L. Rudnick; Jochen Klinke

2007-11-01T23:59:59.000Z

70

The Vertical Turn: Topographies of Metropolitan Modernism  

E-Print Network (OSTI)

Its Discontents: Essays on the New Mobility of People and214 Although this new vertical mobility was largely embracedhave produced new possibilities for mobility, simultaneity,

Haacke, Paul

2011-01-01T23:59:59.000Z

71

Conventional Energy Forum & Associated Vertical Business Development...  

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

The Office of Indian Energy Tribal Leader Energy Forum on "Conventional Energy (Oil, Gas, and Coal) Forum & Associated Vertical Business Development: Best Practices in Indian...

72

True imposters  

Science Conference Proceedings (OSTI)

Imposters are a powerful technique which has been widely used for many years in the graphics community. An imposter is a two dimensional image rendered onto a billboard which represents highly detailed geometry. Imposters can be created on the fly or ...

Eric Risser

2006-07-01T23:59:59.000Z

73

U-028: Microsoft Windows win32k.sys TrueType Font Parsing Vulnerability |  

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

28: Microsoft Windows win32k.sys TrueType Font Parsing 28: Microsoft Windows win32k.sys TrueType Font Parsing Vulnerability U-028: Microsoft Windows win32k.sys TrueType Font Parsing Vulnerability November 7, 2011 - 8:15am Addthis PROBLEM: Microsoft Windows win32k.sys TrueType Font Parsing Vulnerability. PLATFORM: Microsoft Windows 7 Microsoft Windows Server 2003 Datacenter Edition Microsoft Windows Server 2003 Enterprise Edition Microsoft Windows Server 2003 Standard Edition Microsoft Windows Server 2003 Web Edition Microsoft Windows Server 2008 Microsoft Windows Storage Server 2003 Microsoft Windows Vista Microsoft Windows XP Home Edition Microsoft Windows XP Professional ABSTRACT: A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious people to compromise a user's system. reference LINKS:

74

Ingan Based True Green Laser Diodes on Novel Semi-Polar {20-21}  

Science Conference Proceedings (OSTI)

In this paper, we present the high crystal quality and homogeneity in InGaN quantum wells (QWs) on {20-21} planes with the 531 nm true green pulsed lasing ...

75

Choice of a Vertical Grid in Incorporating Condensation Heating into an Isentropic Vertical Coordinate Model  

Science Conference Proceedings (OSTI)

Advantages of using an isentropic vertical coordinate in atmospheric models are well recognized. In particular, the use of an isentropic coordinate virtually eliminates discretization errors for vertical advection since isentropic surfaces are ...

Celal S. Konor; Akio Arakawa

2000-11-01T23:59:59.000Z

76

Vertical two chamber reaction furnace  

DOE Patents (OSTI)

A vertical two chamber reaction furnace is disclosed. The furnace comprises a lower chamber having an independently operable first heating means for heating the lower chamber and a gas inlet means for admitting a gas to create an ambient atmosphere, and an upper chamber disposed above the lower chamber and having an independently operable second heating means for heating the upper chamber. Disposed between the lower chamber and the upper chamber is a vapor permeable diffusion partition. The upper chamber has a conveyor means for conveying a reactant there through. Of particular importance is the thallinating of long-length thallium-barium-calcium copper oxide (TBCCO) or barium-calcium-copper oxide (BCCO) precursor tapes or wires conveyed through the upper chamber to thereby effectuate the deposition of vaporized thallium (being so vaporized as the first reactant in the lower chamber at a temperature between about 700 and 800 C) on TBCCO or BCCO tape or wire (the second reactant) at its simultaneous annealing temperature in the upper chamber of about 800 to 950 C to thereby replace thallium oxide lost from TBCCO tape or wire because of the high annealing temperature or to deposit thallium on BCCO tape or wire. Continuously moving the tape or wire provides a single-step process that effectuates production of long-length TBCCO superconducting product. 2 figs.

Blaugher, R.D.

1999-03-16T23:59:59.000Z

77

Vertical Contracts and Mandatory Universal Distribution  

E-Print Network (OSTI)

Vertical Contracts and Mandatory Universal Distribution Larry S. Karp Jeffrey M. Perloff July 2012 vendor. If a monopoly uses a single vendor, the government may impose a mandatory universal distribution consumer welfare. Keywords: vertical restrictions, mandatory universal distribution, new product oligopoly

Kammen, Daniel M.

78

ARM - Evaluation Product - Convective Vertical Velocity  

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

ProductsConvective Vertical Velocity ProductsConvective Vertical Velocity Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Convective Vertical Velocity 2011.04.25 - 2011.05.23 Site(s) SGP General Description Convective processes play an important role in Earth's energy balance by distributing heat and moisture throughout the atmosphere. In particular, vertical air motions associated with these processes are inherently linked to the life cycle of these convective systems and are therefore directly tied to their energy budget. However, direct measurements of vertical air motions (e.g., in situ aircraft observations) are sparse, making it difficult to compare them with numerical model output, which relies on convective parameterization schemes that have yet to be extensively

79

Vertical Flowmeter Test | Open Energy Information  

Open Energy Info (EERE)

Vertical Flowmeter Test Vertical Flowmeter Test Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Flowmeter Test Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Well Testing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Define permeable zones within a well Thermal: Dictionary.png Vertical Flowmeter Test: A well testing technique done upon completion of a well to identify locations of permeable zones within the well and to quantify the relative permeability of each zone. Other definitions:Wikipedia Reegle Introduction A vertical flowmeter test is also known as a spinner test and is preformed

80

Campbell penetration depth in Fe-based superconductors  

Science Conference Proceedings (OSTI)

A 'true' critical current density, j{sub c}, as opposite to commonly measured relaxed persistent (Bean) current, j{sub B}, was extracted from the Campbell penetration depth, {lambda}{sub c}(T,H) measured in single crystals of LiFeAs, and optimally electron-doped Ba(Fe{sub 0.954}Ni{sub 0.046}){sub 2}As{sub 2} (FeNi122). In LiFeAs, the effective pinning potential is nonparabolic, which follows from the magnetic field - dependent Labusch parameter {alpha}. At the equilibrium (upon field - cooling), {alpha}(H) is non-monotonic, but it is monotonic at a finite gradient of the vortex density. This behavior leads to a faster magnetic relaxation at the lower fields and provides a natural dynamic explanation for the fishtail (second peak) effect. We also find the evidence for strong pinning at the lower fields.The inferred field dependence of the pinning potential is consistent with the evolution from strong pinning, through collective pinning, and eventually to a disordered vortex lattice. The value of j{sub c}(2 K) {approx_equal} 1.22 x 10{sup 6} A/cm{sup 2} provide an upper estimate of the current carrying capability of LiFeAs. Overall, vortex behavior of almost isotropic, fully-gapped LiFeAs is very similar to highly anisotropic d-wave cuprate superconductors, the similarity that requires further studies in order to understand unconventional superconductivity in cuprates and pnictides. In addition to LiFeAs, we also report the magnetic penetration depth in BaFe{sub 2}As{sub 2} based superconductors including irradiation of FeNi122. In unirradiated FeNi122, the maximum critical current value is, j{sub c}(2K) {approx_equal} 3.3 x 10{sup 6} A/cm{sup 2}. The magnetic-dependent feature was observed near the transition temperature in FeTe{sub 0.53}Se{sub 0.47} and irradiated FeNi122. Because of this feature, further studies are required in order to properly calibrate the Campbell penetration depth. Finally, we detected the crossing between the magnetic penetration depth and London penetration depth in optimally hold-doped Ba{sub 0.6}K{sub 0.4}Fe{sub 2}As{sub 2} (BaK122) and isovalent doped BaFe{sub 2}(As{sub 0.7}P{sub 0.3}){sub 2} (BaP122). These phenomena probably coincide with anomalous Meissner effect reported in pnicitde superconductors [Prozorov et al. (2010b)] however more studies are needed in order to clarify this.

Prommapan, Plegchart

2011-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Snow Depth on Arctic Sea Ice  

Science Conference Proceedings (OSTI)

Snow depth and density were measured at Soviet drifting stations on multiyear Arctic sea ice. Measurements were made daily at fixed stakes at the weather station and once- or thrice-monthly at 10-m intervals on a line beginning about 500 m from ...

Stephen G. Warren; Ignatius G. Rigor; Norbert Untersteiner; Vladimir F. Radionov; Nikolay N. Bryazgin; Yevgeniy I. Aleksandrov; Roger Colony

1999-06-01T23:59:59.000Z

82

Depth estimation for ranking query optimization  

Science Conference Proceedings (OSTI)

A relational ranking query uses a scoring function to limit the results of a conventional query to a small number of the most relevant answers. The increasing popularity of this query paradigm has led to the introduction of specialized rank join operators ... Keywords: DEEP, Data statistics, Depth estimation, Query optimization, Relational ranking query, Top-k

Karl Schnaitter; Joshua Spiegel; Neoklis Polyzotis

2009-04-01T23:59:59.000Z

83

Photon Bubbles and the Vertical Structure of Accretion Disks  

E-Print Network (OSTI)

We consider the effects of "photon bubble" shock trains on the vertical structure of radiation pressure-dominated accretion disks. These density inhomogeneities are expected to develop spontaneously in radiation-dominated accretion disks where magnetic pressure exceeds gas pressure, even in the presence of magnetorotational instability. They increase the rate at which radiation escapes from the disk, and may allow disks to exceed the Eddington limit by a substantial factor. We first generalize the theory of photon bubbles to include the effects of finite optical depths and radiation damping. Modifications to the diffusion law at low optical depth tend to fill in the low-density regions of photon bubbles, while radiation damping inhibits the formation of photon bubbles at large radii, small accretion rates, and small heights above the equatorial plane. Accretion disks dominated by photon bubble transport may reach luminosities of 10 to >100 times the Eddington limit (L_E), depending on the mass of the central object, while remaining geometrically thin. However, photon bubble-dominated disks with alpha-viscosity are subject to the same thermal and viscous instabilities that plague standard radiation pressure-dominated disks, suggesting that they may be intrinsically unsteady. Photon bubbles can lead to a "core-halo" vertical disk structure. In super-Eddington disks the halo forms the base of a wind, which carries away substantial energy and mass, but not enough to prevent the luminosity from exceeding L_E. Photon bubble-dominated disks may have smaller color corrections than standard accretion disks of the same luminosity. They remain viable contenders for some ultraluminous X-ray sources and may play a role in the rapid growth of supermassive black holes at high redshift.

Mitchell C. Begelman

2006-02-01T23:59:59.000Z

84

Gulf of Mexico Proved Reserves By Water Depth, 2008  

U.S. Energy Information Administration (EIA)

Gulf of Mexico Proved Reserves and Production by Water Depth 1 Gulf of Mexico Proved Reserves and Production by Water Depth, 2008 . The Gulf of Mexico Federal ...

85

Microsoft Word - defense_in_depth_fanning.doc  

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

Energy Engineering and Systems Analysis What is Defense in Depth? Defense in Depth is a safety philosophy that guides the design, construction, inspection, operation, and...

86

Vertical Electrical Sounding Configurations | Open Energy Information  

Open Energy Info (EERE)

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

87

Coexistence of Strategic Vertical Separation and Integration  

E-Print Network (OSTI)

This paper gives conditions under which vertical separation is chosen by some upstream firms, while vertical integration is chosen by others in the equilibrium of a symmetric model. A vertically separating firm trades off fixed contracting costs against the strategic benefit of writing a (two-part tariff, exclusive dealership) contract with its retailer. Equilibrium coexistence emerges when observable and non-renegotiable contracts are offered to downstream Cournot oligopolists that supply close substitutes. The scope for equilibrium coexistence diminishes when assumptions on contract observability and commitment are relaxed.

Jos Jansen; Jos Jansen; Coexistence Strategic; Vertical Separation; Jos Jansen

2003-01-01T23:59:59.000Z

88

Vertical Seismic Profiling | Open Energy Information  

Open Energy Info (EERE)

Vertical Seismic Profiling Vertical Seismic Profiling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Seismic Profiling Details Activities (4) Areas (3) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Borehole Seismic Techniques Parent Exploration Technique: Borehole Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

89

Simulation of anisotropic wave propagation in Vertical Seismic Profiles  

E-Print Network (OSTI)

The influence of elastic anisotropy on seismic wave propagation is often neglected for the sake of simplicity. However, ignoring anisotropy may lead to significant errors in the processing of seismic data and ultimately in a poor image of the subsurface. This is especially true in wide-aperture Vertical Seismic Profiles where waves travel both vertically and horizontally. Anisotropy has been neglected in wavefront construction methods of seismic ray-tracing until Gibson (2000), who showed they are powerful tools to simulate seismic wave propagation in three-dimensional anisotropic subsurface models. The code is currently under development using a C++ object oriented programming approach because it provides high flexibility in the design of new components and facilitates debugging and maintenance of a complex algorithm. So far, the code was used to simulate propagation in homogeneous or simple heterogeneous anisotropic velocity models mainly designed for testing purposes. In particular, it has never been applied to simulate a field dataset. We propose here an analytical method involving little algebra and that allows the design of realistic heterogeneous anisotropic models using the C++ object oriented programming approach. The new model class can model smooth multi-layered subsurface with gradients or models with many dip variations. It has been used to model first arrival times of a wide-aperture VSP dataset from the Gulf of Mexico to estimate the amount of anisotropy. The proposed velocity model is transversely isotropic. The anisotropy is constant throughout the model and is defined via Thomsen's parameters. Values in the final model are epsilon = 0.055 and delta = -0.115. The model is compatible with the a priori knowledge of the local geology and reduces the RMS average time difference between measured and computed travel times by 51% in comparison to the initial isotropic model. These values are realistic and are similar to other measurements of anisotropy in the Gulf of Mexico.

Durussel, Vincent Bernard

2002-08-01T23:59:59.000Z

90

Mobile Variable Depth Sampling System Design Study  

Science Conference Proceedings (OSTI)

A design study is presented for a mobile, variable depth sampling system (MVDSS) that will support the treatment and immobilization of Hanford LAW and HLW. The sampler can be deployed in a 4-inch tank riser and has a design that is based on requirements identified in the Level 2 Specification (latest revision). The waste feed sequence for the MVDSS is based on Phase 1, Case 3S6 waste feed sequence. Technical information is also presented that supports the design study.

BOGER, R.M.

2000-08-25T23:59:59.000Z

91

Hydraulic frac sets Rockies depth record  

SciTech Connect

A depth record for massive hydraulic fracture in the Rocky Mt. region was set April 22 with the treatment of a central Wyoming gas well. The No. 1-29 Moneta Hills Well was treated through perforations at 19,838 to 19,874 ft and 20,064 to 20,100 ft. Soon after, another well in the Madden Deep Field was subject to hydraulic fracture through perforations a

Not Available

1980-06-01T23:59:59.000Z

92

Vertically stabilized elongated cross-section tokamak  

SciTech Connect

This invention provides a vertically stabilized, non-circular (minor) cross-section, toroidal plasma column characterized by an external separatrix. To this end, a specific poloidal coil means is added outside a toroidal plasma column containing an endless plasma current in a tokamak to produce a rectangular cross-section plasma column along the equilibrium axis of the plasma column. By elongating the spacing between the poloidal coil means the plasma cross-section is vertically elongated, while maintaining vertical stability, efficiently to increase the poloidal flux in linear proportion to the plasma cross-section height to achieve a much greater plasma volume than could be achieved with the heretofore known round cross-section plasma columns. Also, vertical stability is enhanced over an elliptical cross-section plasma column, and poloidal magnetic divertors are achieved.

Sheffield, George V. (Hopewell, NJ)

1977-01-01T23:59:59.000Z

93

Statistics on Vertical Wind Shear over Oceans  

Science Conference Proceedings (OSTI)

Statistics on boundary layer vertical wind shear were gathered from rawinsonde soundings taken from three small islands and one weather ship. These soundings show a high correlation between surface and 1829 m altitude wind directions. Wind speeds ...

Donald P. Wylie; Barry B. Hinton; Kellie M. Millett

1984-06-01T23:59:59.000Z

94

Relating River Plume Structure to Vertical Mixing  

Science Conference Proceedings (OSTI)

The structure of a river plume is related to the vertical mixing using an isohaline-based coordinate system. Salinity coordinates offer the advantage of translating with the plume as it moves or expanding as the plume grows. This coordinate ...

Robert D. Hetland

2005-09-01T23:59:59.000Z

95

Vertical Axis Wind Turbine Foundation parameter study  

DOE Green Energy (OSTI)

The dynamic failure criterion governing the dimensions of prototype Vertical Axis Wind Turbine Foundations is treated as a variable parameter. The resulting change in foundation dimensions and costs is examined.

Lodde, P.F.

1980-07-01T23:59:59.000Z

96

The Vertical Turn: Topographies of Metropolitan Modernism  

E-Print Network (OSTI)

superpower of the atomic age, these vertical structures andPan-Romanticism in the Atomic Age before turning to myand the emergence of the atomic age. 228 Dos Passos, John.

Haacke, Paul

2011-01-01T23:59:59.000Z

97

Vertical Glider Robots for Subsea Equipment Delivery  

E-Print Network (OSTI)

We have developed an underwater vehicle that offers significant performance improvements over existing sub sea elevators. Our Vertical Glider Robot falls under its own weight to a precise location on the seafloor, employing ...

Reed, Brooks L.

2011-01-01T23:59:59.000Z

98

Property:Depth(m) | Open Energy Information  

Open Energy Info (EERE)

Depth(m) Depth(m) Jump to: navigation, search This is a property of type String. Pages using the property "Depth(m)" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + 0.9 + 10-ft Wave Flume Facility + 1.5 + 11-ft Wave Flume Facility + 1.8 + 2 2-ft Flume Facility + 1.8 + 3 3-ft Wave Flume Facility + 0.9 + 5 5-ft Wave Flume Facility + 1.5 + 6 6-ft Wave Flume Facility + 1.8 + A Alden Large Flume + 3.0 + Alden Small Flume + 1.8 + Alden Tow Tank + 1.2 + Alden Wave Basin + 1.2 + B Breakwater Research Facility + 0.8 + Bucknell Hydraulic Flume + 0.6 + C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + 0.6 + Carderock 3-ft Variable Pressure Cavitation Water Tunnel + 0.7 + Carderock Circulating Water Channel + 2.7 +

99

The Accuracy of Vertical Air Velocities from Doppler Radar Data  

Science Conference Proceedings (OSTI)

Eight methods of calculating vertical air velocity in a column are compared. Each method requires some or all of the following data: horizontal divergence, vertical precipitation velocity, hydrometeor terminal fall speed, and vertical air ...

Thomas Matejka; Diana L. Bartels

1998-01-01T23:59:59.000Z

100

Contactless electromagnetic active attack on ring oscillator based true random number generator  

Science Conference Proceedings (OSTI)

True random number generators (TRNGs) are ubiquitous in data security as one of basic cryptographic primitives. They are primarily used as generators of confidential keys, to initialize vectors, to pad values, but also as random masks generators in some ... Keywords: EM injections, IEMI, TRNGs, active attacks, ring oscillators

Pierre Bayon; Lilian Bossuet; Alain Aubert; Viktor Fischer; Franois Poucheret; Bruno Robisson; Philippe Maurine

2012-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Vertical Distribution of Contamination in Ground Water at the...  

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

Vertical Distribution of Contamination in Ground Water at the Tuba City, Arizona, Site Vertical Distribution of Contamination in Ground Water at the Tuba City, Arizona, Site...

102

Variability at Intermediate Depths at the Equator in the Atlantic Ocean in 200006: Annual Cycle, Equatorial Deep Jets, and Intraseasonal Meridional Velocity Fluctuations  

Science Conference Proceedings (OSTI)

Time series of high vertical resolution current meter measurements between 600-m and 1800-m depths on the equator in the Atlantic were obtained at two locations, 10 and 23W. The measurements have a time span of almost 7 years (200006) and ...

Lucia Bunge; Christine Provost; Bach Lien Hua; Annie Kartavtseff

2008-08-01T23:59:59.000Z

103

An Energy and Angular-Momentum Conserving Vertical Finite-Difference Scheme and Hybrid Vertical Coordinates  

Science Conference Proceedings (OSTI)

An energy and angular-momentum conserving vertical finite-difference scheme is introduced for a general terrain-following vertical coordinate which is a function of pressure and its surface value. A corresponding semi-implicit time scheme is also ...

A. J. Simmons; D. M. Burridge

1981-04-01T23:59:59.000Z

104

Vertical Water Velocities from Underwater Gliders  

Science Conference Proceedings (OSTI)

The underwater glider is set to become an important platform for oceanographers to gather data within oceans. Gliders are usually equipped with a conductivitytemperaturedepth (CTD) sensor, but a wide range of other sensors have been fitted to ...

Lucas Merckelbach; David Smeed; Gwyn Griffiths

2010-03-01T23:59:59.000Z

105

Fundamental and effective Yang-Mills vertices  

SciTech Connect

Calorons and plane waves within and in between them collectively give rise to a thermal ground state. The latter provides a homgeneous energy density and a negative pressure, and it induces quasiparticle masses to part of the propagating spectrum of deconfining SU(2) Yang-Mills thermodynamics (dynamical gauge-symmetry breaking). In the present talk we discuss the role of a single caloron in inducing effective local vertices, characterized by powers of h, mediating the interaction of plane waves which propagate over large distances. The constraints on momentum transfers through effective 4-vertices are revisited.

Hofmann, Ralf [ITP, Universitaet Heidelberg, Philosophenweg 16, 69120 Heidelberg (Germany)

2012-09-26T23:59:59.000Z

106

Accurate hydrogen depth profiling by reflection elastic recoil detection analysis  

DOE Green Energy (OSTI)

A technique to convert reflection elastic recoil detection analysis spectra to depth profiles, the channel-depth conversion, was introduced by Verda, et al [1]. But the channel-depth conversion does not correct for energy spread, the unwanted broadening in the energy of the spectra, which can lead to errors in depth profiling. A work in progress introduces a technique that corrects for energy spread in elastic recoil detection analysis spectra, the energy spread correction [2]. Together, the energy spread correction and the channel-depth conversion comprise an accurate and convenient hydrogen depth profiling method.

Verda, R. D. (Raymond D.); Tesmer, Joseph R.; Nastasi, Michael Anthony,; Bower, R. W. (Robert W.)

2001-01-01T23:59:59.000Z

107

A low order model for vertical axis wind turbines  

E-Print Network (OSTI)

A new computational model for initial sizing and performance prediction of vertical axis wind turbines

Drela, Mark

108

Defence-In-Depth: Application firewalls in a defence-in-depth design  

Science Conference Proceedings (OSTI)

It is well known and accepted by most security professionals that defence-in-depth is an important security principle: the age-old saying of ''don't put all your eggs in one basket'' applies just as much here as elsewhere. The wise assume that any part ...

Paul Byrne

2006-09-01T23:59:59.000Z

109

Optimal Location of Vertical Wells: Decomposition Approach  

E-Print Network (OSTI)

Optimal Location of Vertical Wells: Decomposition Approach M. G. Ierapetritou and C. A. Floudas®elopment plan with well locations, gi®en a reser®oir property map and a set of infrastructure constraints, represents a ®ery challenging prob- lem. The problem of selecting the optimal ®ertical well locations

110

Hedging and Vertical Integration in Electricity Markets  

Science Conference Proceedings (OSTI)

This paper analyzes the interactions between competitive (wholesale) spot, retail, and forward markets and vertical integration in electricity markets. We develop an equilibrium model with producers, retailers, and traders to study and quantify the impact ... Keywords: asset pricing, corporate finance, electric--electronic, financial institutions, industries, markets

Ren Ad; Gilles Chemla; Arnaud Porchet; Nizar Touzi

2011-08-01T23:59:59.000Z

111

Vertical pump with free floating check valve  

DOE Patents (OSTI)

A vertical pump with a bottom discharge having a free floating check valve isposed in the outlet plenum thereof. The free floating check valve comprises a spherical member with a hemispherical cage-like member attached thereto which is capable of allowing forward or reverse flow under appropriate conditions while preventing reverse flow under inappropriate conditions.

Lindsay, Malcolm (O' Hara Township, Allegheny County, PA)

1980-01-01T23:59:59.000Z

112

Gulf of Mexico Proved Reserves By Water Depth, 2009  

Gasoline and Diesel Fuel Update (EIA)

Gulf of Mexico Proved Reserves and Production by Water Depth, 2009 1 Gulf of Mexico Proved Reserves and Production by Water Depth The Gulf of Mexico Federal Offshore region (GOM...

113

Distillate in Depth The Supply, Demand, and Price Picture  

U.S. Energy Information Administration (EIA)

Distillate in Depth The Supply, Demand, and Price Picture John Hackworth Joanne Shore Energy Information Administration ... In Response to Price, ...

114

The vertical-mill stage : design of a vertical movement stage for surface machining  

E-Print Network (OSTI)

To allow the widespread use of three dimensional patterns on walls, the manufacturing cost must be reduced. The goal of this project is to design a machine for vertical axis movement which can be measured and controlled. ...

Herrera, Juan, Jr

2007-01-01T23:59:59.000Z

115

Vertical muon intensity measured with MACRO at the Gran Sasso laboratory  

Science Conference Proceedings (OSTI)

The vertical underground muon intensity has been measured in the slant depth range 3200--7000 hg cm{sup {minus}2} (standard rock) with the completed lower part of the MACRO detector at the Gran Sasso laboratory, using a large sample of data. These observations are used to compute the surface muon flux and the primary ``all-nucleon`` spectrum. An analysis of systematic uncertainties introduced by the interaction models in the atmosphere and the underground propagation of muons is presented. A comparison of our results with published data is also presented.

Ambrosio, M.; Antolini, R.; Auriemma, G.; Baker, R.; Baldini, A.; Barbarino, G.C.; Barish, B.C.; Battistoni, G.; Bellotti, R.; Bemporad, C.; Bernardini, P.; Bilokon, H.; Bisi, V.; Bloise, C.; Bower, C.; Bussino, S.; Cafagna, F.; Calicchio, M.; Campana, D.; Carboni, M.; Castellano, M.; Cecchini, S.; Cei, F.; Celio, P.; Chiarella, V.; Corona, A.; Coutu, S.; De Cataldo, G.; Dekhissi, H.; De Marzo, C.; De Mitri, I.; De Vincenzi, M.; Di Credico, A.; Erriquez, O.; Favuzzi, C.; Forti, C.; Fusco, P.; Giacomelli, G.; Giannini, G.; Giglietto, N.; Grassi, M.; Grillo, A.; Guarino, F.; Guarnaccia, P.; Gustavino, C.; Habig, A.; Hanson, K.; Hawthorne, A.; Heinz, R.; Hong, J.T.; Iarocci, E.; Katsavounidis, E.; Kearns, E.; Kyriazopoulou, S.; Lamanna, E.; Lane, C.; Levin, D.S.; Lipari, P.; Liu, R.; Longley, N.P.; Longo, M.J.; Lu, Y.; Ludlam, G.; Mancarella, G.; Mandrioli, G.; Margiotta-Neri, A.; Marini, A.; Martello, D.; Marzari-Chiesa, A.; Mazziotta, M.N.; Michael, D.G.; Mikheyev, S.; Miller, L.; Mittelbrunn, M.; Monacelli, P.; Montaruli, T.; Monteno, M.; Mufson, S.; Musser, J.; Nicolo, D.; Nolty, R.; Okada, C.; Orth, C.; Osteria, G.; Palamara, O.; Parlati, S.; Patera, V.; Patrizii, L.; Pazzi, R.; Peck, C.W.; Petrera, S.; Pignatano, N.D.; Pistilli, P.; Popa, V.; Raino, A.; Reynoldson, J.; Ronga, F.; Sanzgiri, A.; Sartogo, F.; Satriano, C.; Satta, L.; Scapparone, E.; Scholberg, K.; Sciubba, A.; Serra-Lugaresi, P.; Severi, M.; Sitta, M.; Spinelli, P.; Spinetti, M.; Spurio, M.; Steinberg, R.; Stone, J.L.; Sulak, L.R.; Surdo, A.; Tarle, G.; Tassoni, F.; Togo, V.; Valente, V.; Walter, C.W.; Webb, R. [Dipartimento di Fisica dell`Universita di Bari and Istituto Nazionale di Fisica Nucleare, 70126 Bari (Italy)]|[Dipartimento di Fisica dell`Universita di Bologna and Istituto Nazionale di Fisica Nucleare, 40126 Bologna (Italy)]|[Physics Department, Boston University, Boston, Massachusetts 02215 (United States)]|[California Institute of Technology, Pasadena, California 91125 (United States)...

1995-10-01T23:59:59.000Z

116

The True-Twin microcalorimeter: a proof-of-concept experiment  

E-Print Network (OSTI)

We present a proof-of-concept experiment to realize microwave primary power standard with a true-twin microcalorimeter. Double feeding line microcalorimeters are widely used by National Metrology Institutes. A drawback concerns the system calibration: traditional processes changes measurement conditions between system characterization and the measurement stage. Nevertheless, if the feeding lines are made twin, a measurement scheme that avoids separate characterization can be applied, equations simplify and time consumption is halved. Here we demonstrates the feasibility of the idea. The result of an effective efficiency spectroscopy of a thermoelectric power sensor is compared with figures obtained with well established methods.

Luca Oberto; Luciano Brunetti; Marco Sellone

2011-05-02T23:59:59.000Z

117

Category:Vertical Electrical Sounding Configurations | 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 Category Edit History Facebook icon Twitter icon » Category:Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Vertical Electrical Sounding Configurations page? For detailed information on Vertical Electrical Sounding Configurations as exploration techniques, click here. Category:Vertical Electrical Sounding Configurations Add.png Add a new Vertical Electrical Sounding Configurations Technique Pages in category "Vertical Electrical Sounding Configurations" The following 2 pages are in this category, out of 2 total.

118

Dynamics of a vertical water bridge  

E-Print Network (OSTI)

A vertical connection of water is formed when a high voltage electrode is dipped in and pulled out of a container of deionized water. We considered the formation and dynamical characteristics of this vertical water bridge. For the first time in this field, instabilities were observed in the bridge that led to an oscillatory behaviour which we categorized them into three dynamical regimes. some explanations were supplied on the physics behind these dynamics. We report the formation of macroscopic droplets during our experiments, which their dynamics revealed that they are electrically charged. In some cases the droplets levitated in the air due to the equality of gravity and electrical force (acting in the opposite direction). Our results shed light on the physics behind this phenomenon and the horizontal water bridge, which explanations regarding its underlying physics have led to controversial theories and discussions before.

Reza Montazeri Namin; Zahra Karimi

2013-09-09T23:59:59.000Z

119

Definition: Vertical Seismic Profiling | Open Energy Information  

Open Energy Info (EERE)

Profiling Profiling Jump to: navigation, search Dictionary.png Vertical Seismic Profiling Vertical Seismic Profile (VSP) is a technique of seismic measurements used for high resolution seismic imaging. It can also be used for correlation with surface seismic data providing velocity information and information for processing such as deconvolution parameters. The defining characteristic of a VSP is that the detectors are in a borehole.[1][2][3] View on Wikipedia Wikipedia Definition Also Known As Advanced Borehole Seismology (ABS), Related Terms Seismic Techniques, High Resolution Imaging and Monitoring References ↑ Bob Hardage VSP Principles ↑ High resolution 3D seismic imaging using 3C data from large downhole seismic arrays Paulsson et al. (2004) ↑ Mueller Soroka Paulsson (2010)

120

Description of true and delayed ternary nuclear fission accompanied by the emission of various third particles  

Science Conference Proceedings (OSTI)

The mechanisms and the features of the main types of nuclear ternary fission (that is, true ternary fission, in which a third particle is emitted before the rupture of the fissioning nucleus into fragments, and delayed ternary fission, in which a third particle is emitted from fission fragments going apart) are investigated within quantum-mechanical fission theory. The features of T-odd asymmetry in true ternary nuclear fission induced by cold polarized neutrons are investigated for the cases where alpha particles, prescission neutrons, and photons appear as third particles emitted by fissioning nuclei, the Coriolis interaction of the spin of the polarized fissioning nucleus with the spin of the third particle and the interference between the fission amplitudes for neutron resonances excited in the fissioning nucleus in the case of projectile-neutron capture being taken into account. For the cases where third particles emitted by fission fragments are evaporated neutrons or photons, T-odd asymmetries in delayed ternary nuclear fission induced by cold polarized neutrons are analyzed with allowance for the mechanism of pumping of large fission-fragment spins oriented orthogonally to the fragment-emission direction and with allowance for the interference between the fission amplitudes for neutron resonances.

Kadmensky, S. G., E-mail: kadmensky@vsu.ru; Kadmensky, S. S.; Lyubashevsky, D. E. [Voronezh State University (Russian Federation)

2010-08-15T23:59:59.000Z

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


121

Impact of Dynamics and Atmospheric State on Cloud Vertical Overlap  

Science Conference Proceedings (OSTI)

The observation and representation in general circulation models (GCMs) of cloud vertical overlap are the objects of active research due to their impacts on the earths radiative budget. Previous studies have found that vertically contiguous ...

Catherine M. Naud; Anthony Del Genio; Gerald G. Mace; Sally Benson; Eugene E. Clothiaux; Pavlos Kollias

2008-04-01T23:59:59.000Z

122

Herrenknecht Vertical GmbH | Open Energy Information  

Open Energy Info (EERE)

Herrenknecht Vertical GmbH Herrenknecht Vertical GmbH Jump to: navigation, search Name Herrenknecht Vertical GmbH Place Schwanau, Baden-Württemberg, Germany Zip 77961 Sector Geothermal energy Product Specialized company that builds vertical drilling equipment for the development of geothermal resources. References Herrenknecht Vertical GmbH[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Herrenknecht Vertical GmbH is a company located in Schwanau, Baden-Württemberg, Germany . References ↑ "Herrenknecht Vertical GmbH" Retrieved from "http://en.openei.org/w/index.php?title=Herrenknecht_Vertical_GmbH&oldid=346498" Categories: Clean Energy Organizations Companies

123

On Deriving Vertical Air Motions from Cloud Radar Doppler Spectra  

Science Conference Proceedings (OSTI)

A method for deriving vertical air motions from cloud radar Doppler spectrum measurements is introduced. The method is applicable to cloud volumes containing small particles, in this case liquid droplets, which are assumed to trace vertical air ...

Matthew D. Shupe; Pavlos Kollias; Michael Poellot; Edwin Eloranta

2008-04-01T23:59:59.000Z

124

Numerical Modeling of the Atmosphere with an Isentropic Vertical Coordinate  

Science Conference Proceedings (OSTI)

In constructing a numerical model of the atmosphere, we must choose an appropriate vertical coordinate. Among the various possibilities, isentropic vertical coordinates such as the ?-coordinate seem to have the greatest potential, in spite of the ...

Yueh-Jiuan G. Hsu; Akio Arakawa

1990-10-01T23:59:59.000Z

125

Moisture Vertical Structure, Column Water Vapor, and Tropical Deep Convection  

Science Conference Proceedings (OSTI)

The vertical structure of the relationship between water vapor and precipitation is analyzed in 5 yr of radiosonde and precipitation gauge data from the Nauru Atmospheric Radiation Measurement (ARM) site. The first vertical principal component of ...

Christopher E. Holloway; J. David Neelin

2009-06-01T23:59:59.000Z

126

Vertical axis wind turbine with continuous blade angle adjustment  

E-Print Network (OSTI)

The author presents a concept for a vertical axis wind turbine that utilizes each blade's entire rotational cycle for power generation. Each blade has its own vertical axis of rotation and is constrained to rotate at the ...

Weiss, Samuel Bruce

2010-01-01T23:59:59.000Z

127

Movement and Vertical Coupling of Adiabatic Baroclinic Tropical Cyclones  

Science Conference Proceedings (OSTI)

The vertical coupling and movement of an adiabatic baroclinic tropical cyclone (TC) are investigated through two numerical experiments in which the TC is affected by either a vertical environmental shear or a differential beta drift. In both ...

Liguang Wu; Bin Wang

2001-07-01T23:59:59.000Z

128

Vertical Velocities in a Thunderstorm Gust Front and Outflow  

Science Conference Proceedings (OSTI)

Continuous vertically pointing measurements of a thunderstorm outflow, including its gust front, were obtained with a Doppler radar near New Salem, North Dakota. The measurements provide a high-resolution depiction of the vertical structure of ...

Brooks E. Martner

1997-05-01T23:59:59.000Z

129

Mean Vertical Motions Seen by Radar Wind Profilers  

Science Conference Proceedings (OSTI)

Radar wind profilers have been used to measure directly the vertical motion above the radar site. Mean values of vertical motions in the troposphere and lower stratosphere reported at sites in and near mountains are often several centimeters per ...

G. D. Nastrom; T. E. VanZandt

1994-08-01T23:59:59.000Z

130

Evaluation of Vertical Motion: Past, Present, and Future  

Science Conference Proceedings (OSTI)

The potential impact of gridded output from numerical models on operational forecasting of vertical motion is examined. A review of historical techniques for operational vertical motion evaluation is presented. An attempt is made to relate ...

Lawrence B. Dunn

1991-03-01T23:59:59.000Z

131

A Statistical Model of Vertical Shear from Moored Current Meters  

Science Conference Proceedings (OSTI)

We derive a statistical model or shear to predict how measurement of mean-square shear vary with stratification and with vertical separation ?z between moored current meters. Our model is based on a simplified version of the vertical wavenumber-...

David Rubenstein; Fred Newman; Walt Grabowski

1983-06-01T23:59:59.000Z

132

Environmental Vertical Wind Shear with Hurricane Bertha (1996)  

Science Conference Proceedings (OSTI)

Hurricane Bertha (1996) was influenced by vertical wind shear with highly variable direction and magnitude. The paper describes a unique method for determining the vertical tilt of a tropical cyclone vortex using satellite and aircraft data. ...

Raymond M. Zehr

2003-04-01T23:59:59.000Z

133

Vertical Structure of the Anomalous 2002 Antarctic Ozone Hole  

Science Conference Proceedings (OSTI)

Ozone estimates from observations by the NOAA-16 Solar Backscattered Ultraviolet (SBUV/2) instrument and Television Infrared Observation Satellite (TIROS-N) Operational Vertical Sounder (TOVS) are used to describe the vertical structure of ozone ...

S. Kondragunta; L. E. Flynn; A. Neuendorffer; A. J. Miller; C. Long; R. Nagatani; S. Zhou; T. Beck; E. Beach; R. McPeters; R. Stolarski; P. K. Bhartia; M. T. DeLand; L.-K. Huang

2005-03-01T23:59:59.000Z

134

300-Area VOC Program Slug Test Characterization Results for Selected Test/Depth Intervals Conducted During the Drilling of Well 399-3-21  

SciTech Connect

This report presents brief test descriptions and analysis results for multiple, stress-level slug tests that were performed at selected test/depth intervals within well 399-3-21 as part of the 300-Area volatile organic compound characterization program. The test intervals were characterized as the borehole was advanced to its final drill depth (45.7 m) and before its completion as a monitor-well facility. The primary objective of the slug tests was to provide information pertaining to the vertical distribution of hydraulic conductivity with depth at this location and to select the final screen-depth interval for the monitor well. This type of characterization information is important for predicting/simulating contaminant migration (i.e., numerical flow/transport modeling) and designing proper monitor-well strategies within this area.

Spane, Frank A.

2007-07-19T23:59:59.000Z

135

Particle swarm optimization applied to vertical traffic scheduling in buildings  

Science Conference Proceedings (OSTI)

Vertical traffic scheduling is significant in evaluating the quality of property management. An excellent vertical traffic scheduling approach aims at enhancing the system handling capacity and reducing the waiting time, journey time and energy consumption, ... Keywords: dynamic zoning, elevator group control system, particle swarm optimization, round-trip time, vertical traffic scheduling

Zhonghua Li; Hong-Zhou Tan; Yunong Zhang

2007-09-01T23:59:59.000Z

136

Average Depth of Crude Oil and Natural Gas Wells  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: Average depth may ...

137

Flexible finite-element modeling of global geomagnetic depth sounding  

E-Print Network (OSTI)

Modeling in 2D and 3D for Geomagnetic Depth Sounding (31, 16610. Banks, R. , 1969: Geomagnetic variations and the1997: Introduction to geomagnetic fields. Cambridge Univ Pr.

Ribaudo, Joseph Thomas

2011-01-01T23:59:59.000Z

138

Control Systems Cyber Security: Defense in Depth Strategies ...  

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

and direction for developing 'defense-in-depth' strategies for organizations that use control system networks while maintaining a multi-tier information architecture. Control...

139

True in-situ bed preparation: oil shale and tar sand  

SciTech Connect

In 1978, a detailed study was conducted to evaluate the status of the bed preparation technology that had been developed for true in-situ processing of oil shale. It was concluded that the two techniques which had received the bulk of the attention in prior field experimentation, namely the wellbore springing and hydraulic/explosive fracturing concepts, both had inherent traits which would prevent them from being useful in practical applications. In the current paper, the previous results are reviewed to determine whether or not they are also applicable to tar sand. The conclusion reached is that neither technique would be practical for preparing a tar sands deposit for in-situ processing.

Boade, R. R.

1980-01-01T23:59:59.000Z

140

Material balance calculations for true in-situ oil shale retorting  

DOE Green Energy (OSTI)

In an effort to further understand the characteristics of true in situ oil shale retorting, a comprehensive material balance procedure has been developed for this application. In addition to the normal elemental balances, laboratory data for the stoichiometry of oil coking and kerogen decomposition are used. This additional information allows estimates to be made as to the extent of the product loss mechanisms of oil coking and oil combustion. Assumptions are necessary in order to close the balance; thus sensitivity of the results to these assumptions is examined. The procedure has been applied to both the Site 9 and, on a preliminary basis, Site 12 oil shale retorts conducted by the Laramie Energy Technology Center. Results indicate that oil combustion and oil coking are significant loss mechanisms, i.e., on the order of 40 to 60% of oil retorted.

Hommert, P.J.

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

The Insulation Energy Appraisal Assessing the True Value of Insulated System  

E-Print Network (OSTI)

Insulation remains a seriously under-utilized technology in the manufacturing and industrial sectors of the economy even though its role in energy efficiency and environmental preservation is clear. The objective of the presentation is to educate the audience about the enormous savings potential of insulation in terms of reduced energy costs, improved process control, reduced greenhouse gas emissions, noise control and personnel protection. In addition, the presentation will introduce the audience to a new energy management tool designed to help facility/energy managers understand the true dollar and performance value of insulation- the Insulation Energy Appraisal Program. The program has achieved tremendous success with all classes sold out to date. The presentation will highlight various components of the intensive 2-day training program which teaches an appraiser how to: evaluate the thermal performance of insulated versus uninsulated piping and equipment; translate Btu losses into actual dollars; and calculate greenhouse gas emissions.

Schell, S.

2002-04-01T23:59:59.000Z

142

Empirical vertical structure of density anomaly in the Gulf of Mexico  

E-Print Network (OSTI)

Climatological vertical structure of density anomaly in the Gulf of Mexico is realistically characterized in a form useful for calibration and/or verification of numerical circulation models, employing a new method that allows variable depth and thermocline ventilation. We do this by local flat bottom dynamic analysis based on the primitive equations referred to an isopycnic coordinate system, so that potential density is treated as a conservative property. A global reference column is constructed for use in a dynamic modal decomposition in terms of local vertical structure functions that integrates seafloor depth and station data in a common spectral representation. The dynamic procedure is followed by joint and simple indirect EOF (empirical orthogonal function) analysis of modal coefficients for the complete data set and for binned subsets of the data. The dominant EOFs resemble dynamic modes, but combinations of dynamic modes are observed in EOFs having small contribution to the total variance. Indirect EOF representation of the data appears to have its greatest implications in the physical interpretation of the dynamic system, specifically in the coupling of dynamic modes.

Current, Carole Louise

1993-01-01T23:59:59.000Z

143

Control system for a vertical axis windmill  

DOE Patents (OSTI)

A vertical axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure, when wind speed is sufficient. A microprocessor controller is used to process information on wind speed, wind direction and RPM of the rotating structure to develop an electrical signal for establishing blade position. The preferred embodiment of the invention, when connected to a utility grid, is designed to generate 40 kilowatts of power when exposed to a 20 mile per hour wind. The control system for the windmill includes electrical blade actuators that modulate the blades of the rotating structure. Blade modulation controls the blade angle of attack, which in turn controls the RPM of the rotor. In the preferred embodiment, the microprocessor controller provides the operation logic and control functions. A wind speed sensor provides inputs to start or stop the windmill, and a wind direction sensor is used to keep the blade flip region at 90.degree. and 270.degree. to the wind. The control system is designed to maintain constant rotor RPM when wind speed is between 10 and 40 miles per hour.

Brulle, Robert V. (St. Louis County, MO)

1983-10-18T23:59:59.000Z

144

Effective Higgs vertices in the generic MSSM  

Science Conference Proceedings (OSTI)

In this article we consider chirally enhanced corrections to Higgs vertices in the most general MSSM. We include the contributions stemming from bilinear terms, from the trilinear A terms, and from their nonholomorphic analogues, the A{sup '} terms, which couple squarks to the ''wrong'' Higgs field. We perform a consistent renormalization of the Higgs vertices beyond the decoupling limit (M{sub SUSY{yields}{infinity}}), using a purely diagrammatic approach. The cancellation of the different contributions in and beyond the decoupling limit is discussed and the possible size of decoupling effects which occur if the supersymmetry particles are not much heavier than the electroweak scale are examined. In the decoupling limit we recover the results obtained in the effective-field-theory approach. For the nonholomorphic A{sup '} terms we find the well known tan{beta} enhancement in the down sector similar to the one for terms proportional to {mu}. Because of the a priori generic flavor structure of these trilinear terms large flavor-changing neutral Higgs couplings can be induced. We also discover new tan{beta} enhanced contributions involving the usual holomorphic A terms, which were not discussed before in the literature. These corrections occur only if also flavor-diagonal nonholomorphic corrections to the Higgs couplings are present. This reflects the fact that the A terms, and also the chirality-changing self-energies, are physical quantities and cannot be absorbed into renormalization constants.

Crivellin, Andreas [Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern, CH-3012 Bern (Switzerland)

2011-03-01T23:59:59.000Z

145

Seismic Behaviour of Vertical Mass Isolated Structures  

SciTech Connect

In this paper, the seismic behaviour of vertical mass isolated structures against the earthquake is studied. These structures are assumed to be consisted of two subsystems. Mass subsystem possesses low lateral stiffness but carries the major part of mass of the system. Stiffness subsystem, however, controls the deformation of the mass subsystem and attributes with much higher stiffness. The isolator layer is, therefore, located in between the mass and the stiffness subsystems and assumed to be a viscous damper layer. The analytical model used for this investigation is a dual mass-spring model which is an extended form of the three element Maxwell model. In this study, the ability of mass isolation techniques in reducing earthquake effects on buildings with two approaches, parametric and numerical approaches, is shown. In the parametric approach, by definition an isolation factor for structure and determination the dynamic characteristics of system, the relative optimum value of the isolator damping coefficient is obtained. The results provide an insight on role of relative stiffness and mass ratio of the two subsystems. Finally, in the numerical approach, the spectral responses of these structures due to the earthquake are investigated. The results show a noticeable decrease in earthquake input force to vertical mass isolated structures in comparison with non-isolated structures.

Nekooei, M.; Ziyaeifar, M. [Structural Engineering Research Centre, International Institute of Earthquake Engineering and Seismology (IIEES), P.O. Box 19395-3913, Tehran (Iran, Islamic Republic of)

2008-07-08T23:59:59.000Z

146

The role of vertical buoyancy distributions in simulated low-topped supercells  

E-Print Network (OSTI)

Tornadic potential in low-topped convection is difficult to forecast and to detect on radar. Observations of tornadic low-topped supercell environments allude to low-to-moderate CAPE and at least moderate low-level lapse rates in temperature. This study examines the role of low-level vertical buoyancy distributions in influencing supercell updraft intensity and persistence, and on mid-level and low-level mesocyclone development. The emphasis is to examine wind, temperature, and moisture profiles that are conducive to the development of low-topped supercells with tornadic potential. COMMAS, a non-hydrostatic 3-dimensional numerical cloud model, was used to simulate supercell development for nine idealized environments having a range of wind shears and total CAPE predictive of supercell type storms, and all having moderate vertical lapse rates in temperature. Supercell updraft forcing characteristics and low-level mesocyclone development in the models were similar for environments with adequate shear and buoyancy distributions in the low levels regardless of the environment's total CAPE. Model results suggest the vertical distribution of buoyancy over the sheared depth of the environment is a better indicator of an environment's potential to produce tornadic supercells than total CAPE.

Cantrell, Louis Edward

1995-01-01T23:59:59.000Z

147

Electrode immersion depth determination and control in electroslag remelting furnace  

DOE Patents (OSTI)

An apparatus and method for controlling an electroslag remelting furnace comprising adjusting electrode drive speed by an amount proportional to a difference between a metric of electrode immersion and a set point, monitoring impedance or voltage, and calculating the metric of electrode immersion depth based upon a predetermined characterization of electrode immersion depth as a function of impedance or voltage.

Melgaard, David K. (Albuquerque, NM); Beaman, Joseph J. (Austin, TX); Shelmidine, Gregory J. (Tijeras, NM)

2007-02-20T23:59:59.000Z

148

Property:AvgReservoirDepth | Open Energy Information  

Open Energy Info (EERE)

AvgReservoirDepth AvgReservoirDepth Jump to: navigation, search Property Name AvgReservoirDepth Property Type Quantity Description Average depth to reservoir Use this type to express a quantity of length. The default unit is the meter (m). Acceptable units (and their conversions) are: Meters - 1 m, meter, meters Meter, Meters, METER, METERS Kilometers - 0.001 km, kilometer, kilometers, Kilometer, Kilometers, KILOMETERS, KILOMETERS Miles - 0.000621371 mi, mile, miles, Mile, Miles, MILE, MILES Feet - 3.28084 ft, foot, feet, Foot, Feet, FOOT, FEET Yards - 1.09361 yd, yard, yards, Yard, Yards, YARD, YARDS Pages using the property "AvgReservoirDepth" Showing 24 pages using this property. A Amedee Geothermal Area + 213 m0.213 km 0.132 mi 698.819 ft 232.939 yd + B Beowawe Hot Springs Geothermal Area + 850 m0.85 km

149

Vertical axis wind turbine control strategy  

DOE Green Energy (OSTI)

Early expensive in automatic operation of the Sandia 17-m vertical axis research wind turbine (VAWT) has demonstrated the need for a systematic study of control algorithms. To this end, a computer model has been developed that uses actual wind time series and turbine performance data to calculate the power produced by the Sandia 17-m VAWT operating in automatic control. The model has been used to investigate the influence of starting algorithms on annual energy production. The results indicate that, depending on turbine and local wind characteristics, a bad choice of a control algorithm can significantly reduce overall energy production. The model can be used to select control algorithms and threshold parameters that maximize long-term energy production. An attempt has been made to generalize these results from local site and turbine characteristics to obtain general guidelines for control algorithm design.

McNerney, G.M.

1981-08-01T23:59:59.000Z

150

Microphysical and Dynamical Influences on Cirrus Cloud Optical Depth Distributions  

SciTech Connect

Cirrus cloud inhomogeneity occurs at scales greater than the cirrus radiative smoothing scale ({approx}100 m), but less than typical global climate model (GCM) resolutions ({approx}300 km). Therefore, calculating cirrus radiative impacts in GCMs requires an optical depth distribution parameterization. Radiative transfer calculations are sensitive to optical depth distribution assumptions (Fu et al. 2000; Carlin et al. 2002). Using raman lidar observations, we quantify cirrus timescales and optical depth distributions at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site in Lamont, OK (USA). We demonstrate the sensitivity of outgoing longwave radiation (OLR) calculations to assumed optical depth distributions and to the temporal resolution of optical depth measurements. Recent work has highlighted the importance of dynamics and nucleation for cirrus evolution (Haag and Karcher 2004; Karcher and Strom 2003). We need to understand the main controls on cirrus optical depth distributions to incorporate cirrus variability into model radiative transfer calculations. With an explicit ice microphysics parcel model, we aim to understand the influence of ice nucleation mechanism and imposed dynamics on cirrus optical depth distributions.

Kay, J.; Baker, M.; Hegg, D.

2005-03-18T23:59:59.000Z

151

A New Hypothesis for the Vertical Distribution of Atmospheric Aerosols  

E-Print Network (OSTI)

A simple model which can explain the observed vertical distribution and size spectrum of atmospheric aerosol has been proposed. The model is based on a new physical hypothesis for the vertical mass exchange between the troposphere and the stratosphere. The vertical mass excange takes place through a gravity wave feedback mechanism. There is a close agreement between the model predicted aerosol distribution and size spectrum and the observed distributions.

A. Mary Selvam; A. S. Ramachandra Murty; Bh. V. Ramanamurty

1999-12-05T23:59:59.000Z

152

New Insights Into Deep Convective Core Vertical Velocities Using...  

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

Insights Into Deep Convective Core Vertical Velocities Using ARM UHF Wind Profilers For original submission and image(s), see ARM Research Highlights http:www.arm.govscience...

153

The Comparison between Vertical Shaft Furnace and Rotary Kiln for ...  

Science Conference Proceedings (OSTI)

Therefore, calcination of coke used for aluminum reduction by vertical shaft furnace is more competitive based on the existing quality of the green petroleum ...

154

Vertical stratified turbulent transport mechanism indicated by remote sensing  

E-Print Network (OSTI)

Satellite and shipboard data reveal the intermittent vertical information transport mechanism of turbulence and internal waves that mixes the ocean, atmosphere, planets and stars.

Gibson, Carl H; Bondur, Valery G

2007-01-01T23:59:59.000Z

155

Vertical stratified turbulent transport mechanism indicated by remote sensing  

E-Print Network (OSTI)

Satellite and shipboard data reveal the intermittent vertical information transport mechanism of turbulence and internal waves that mixes the ocean, atmosphere, planets and stars.

Carl H. Gibson; R. Norris Keeler; Valery G. Bondur

2007-12-02T23:59:59.000Z

156

Commissioning of a Vertical Direct Chill Caster for Producti  

Science Conference Proceedings (OSTI)

Aug 1, 2003 ... Commissioning of a Vertical Direct Chill Caster for Producti by J. Grandfield, C-C. Young, K. Oswald, and P. Baker...

157

Remote Sensing of Cirrus Particle Size Vertical Profile Using...  

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

and shapes. The vertical variation of ice crystal size can alter the radiative heatingcooling profiles in cirrus cloudy atmospheres and hence is an important component in the...

158

Lawrence Livermore study finds human activity affects vertical...  

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

human activity affects vertical structure of atmospheric temperature Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Human influences have directly impacted the latitude...

159

Assessing Cloud Spatial and Vertical Distribution with Infrared...  

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

Cloud Spatial and Vertical Distribution with Infrared Cloud Analyzer I. Genkova and C. N. Long Pacific Northwest National Laboratory Richland, Washington T. Besnard ATMOS SARL Le...

160

Understanding Fault Characteristics And Sediment Depth For Geothermal  

Open Energy Info (EERE)

Understanding Fault Characteristics And Sediment Depth For Geothermal Understanding Fault Characteristics And Sediment Depth For Geothermal Exploration Using 3D Gravity Inversion In Walker Valley, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Understanding Fault Characteristics And Sediment Depth For Geothermal Exploration Using 3D Gravity Inversion In Walker Valley, Nevada Details Activities (2) Areas (1) Regions (0) Abstract: The Southern Walker Lake Basin, situated in the Walker Lake structural domain, consists of primarily E-W directed extension along N-NNW striking normal faults. Water well drilling on the eastern slopes of the Wassuk Range, west of the city of Hawthorne, Nevada showed elevated temperatures. Two recent drill holes reaching downhole depths of more than 4000 ft give some insight to the geologic picture, but more information

Note: This page contains sample records for the topic "true vertical depth" 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

Ensemble-Based Data Assimilation for Estimation of River Depths  

Science Conference Proceedings (OSTI)

A method is presented for estimating bathymetry in a river, based on observations of depth-averaged velocity during steady flow. The estimator minimizes a cost function that combines known information in the form of a prior estimate and measured ...

Greg Wilson; H. Tuba zkan-Haller

2012-10-01T23:59:59.000Z

162

Global Datasets of Rooting Zone Depth Inferred from Inverse Methods  

Science Conference Proceedings (OSTI)

Two inverse methods are applied to a land surface model to infer global patterns of the hydrologically active depth of the vegetation's rooting zone. The first method is based on the assumption that vegetation is optimally adapted to its ...

Axel Kleidon

2004-07-01T23:59:59.000Z

163

Non-contact system for measuring tillage depth  

Science Conference Proceedings (OSTI)

A microprocessor-based non-contact ultrasonic sensor for tillage depth was evaluated. The sensor was tested on concrete, grass, wheat stubble, lightly disked wheat stubble (semi-stubble) and disked surfaces. The grass surface gave a higher variation ...

M. Yasin; R. D. Grisso; G. M. Lackas

1992-07-01T23:59:59.000Z

164

Method and apparatus to measure the depth of skin burns  

DOE Patents (OSTI)

A new device for measuring the depth of surface tissue burns based on the rate at which the skin temperature responds to a sudden differential temperature stimulus. This technique can be performed without physical contact with the burned tissue. In one implementation, time-dependent surface temperature data is taken from subsequent frames of a video signal from an infrared-sensitive video camera. When a thermal transient is created, e.g., by turning off a heat lamp directed at the skin surface, the following time-dependent surface temperature data can be used to determine the skin burn depth. Imaging and non-imaging versions of this device can be implemented, thereby enabling laboratory-quality skin burn depth imagers for hospitals as well as hand-held skin burn depth sensors the size of a small pocket flashlight for field use and triage.

Dickey, Fred M. (Albuquerque, NM); Holswade, Scott C. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

165

Estimating Mixed Layer Depth from Oceanic Profile Data  

Science Conference Proceedings (OSTI)

Estimates of mixed layer depth are important to a wide variety of oceanic investigations including upper-ocean productivity, airsea exchange processes, and long-term climate change. In the absence of direct turbulent dissipation measurements, ...

Richard E. Thomson; Isaac V. Fine

2003-02-01T23:59:59.000Z

166

Evaluation of Boundary Layer Depth Estimates at Summit Station, Greenland  

Science Conference Proceedings (OSTI)

Boundary layer conditions in polar regions have been shown to have a significant impact on the levels of trace gases in the lower atmosphere. The ability to properly describe boundary layer characteristics (e.g., stability, depth, and variations ...

B. Van Dam; D. Helmig; W. Neff; L. Kramer

2013-10-01T23:59:59.000Z

167

Depth-resolved cathodoluminescence spectroscopy of silicon supersaturated with sulfur  

E-Print Network (OSTI)

We investigate the luminescence of Si supersaturated with S (Si:S) using depth-resolved cathodoluminescence spectroscopy and secondary ion mass spectroscopy as the S concentration is varied over 2 orders of magnitude ...

Fabbri, Filippo

168

Instrumentation and Technique for Deducing Cloud Optical Depth  

Science Conference Proceedings (OSTI)

The feasibility of using a photodiode radiometer to infer optical depth of thin clouds from solar intensity measurements is examined. Data were collected by a photodiode radiometer which measured incident radiation at angular fields of view of 2, ...

R. A. Raschke; S. K. Cox

1983-11-01T23:59:59.000Z

169

Autonomous Depth Adjustment for Underwater Sensor Networks: Design and Applications  

E-Print Network (OSTI)

To fully understand the ocean environment requires sensing the full water column. Utilizing a depth adjustment system on an underwater sensor network provides this while also improving global sensing and communications. ...

Detweiler, Carrick

170

Property:FirstWellDepth | Open Energy Information  

Open Energy Info (EERE)

FirstWellDepth FirstWellDepth Jump to: navigation, search Property Name FirstWellDepth Property Type Quantity Use this type to express a quantity of length. The default unit is the meter (m). Acceptable units (and their conversions) are: Meters - 1 m, meter, meters Meter, Meters, METER, METERS Kilometers - 0.001 km, kilometer, kilometers, Kilometer, Kilometers, KILOMETERS, KILOMETERS Miles - 0.000621371 mi, mile, miles, Mile, Miles, MILE, MILES Feet - 3.28084 ft, foot, feet, Foot, Feet, FOOT, FEET Yards - 1.09361 yd, yard, yards, Yard, Yards, YARD, YARDS Pages using the property "FirstWellDepth" Showing 5 pages using this property. B Blue Mountain Geothermal Area + 672 m0.672 km 0.418 mi 2,204.724 ft 734.906 yd + K Kilauea East Rift Geothermal Area + 1,968 m1.968 km

171

True ternary fission, the collinear cluster tripartition (CCT) of {sup 252}Cf  

Science Conference Proceedings (OSTI)

In systematic work over the last decade (see Pyatkov et al. [12] and refs therein), the ternary fission decay of heavy nuclei, in {sup 235}U(n,fff) and {sup 252}Cf(sf) has been studied in a collinear geometry. The name used for this process is (CCT), with three fragments of similar size in a collinear decay, it is the true ternary fission. This decay has been observed in spontaneous fission as well as in a neutron induced reaction. The measurements are based on different experimental set-ups, with binary coincidences containing TOF and energy determinations. With two detector telescopes placed at 180 Degree-Sign , the measurements of masses and energies of each of the registered two fragments, give complete kinematic solutions. Thus the missing mass events in binary coincidences can be determined, these events are obtained by blocking one of the lighter fragments on a structure in front of the detectors. The relatively high yield of CCT (more than 10{sup -3} per binary fission) is explained. It is due to the favourable Q-values (more positive than for binary) and the large phase space of the ternary CCT-decay, dominated by three (magic) clusters: e.g. isotopes of Sn, Ca and Ni, {sup 132}Sn+{sup 50}Ca+{sup 70}Ni. It is shown that the collinear (prolate) geometry has the favoured potential energy relative to the oblate shapes. The ternary fission is considered to be a sequential process. With this assumption the kinetic energies of the fragments have been calculated by Vijay et al.. The third fragments have very low kinetic energies (below 20 MeV) and have thus escaped their detection in previous work on 'ternary fission', where in addition an oblate shape and a triangle for the momentum vectors have been assumed.

Oertzen, W. von; Pyatkov, Y. V.; Kamanin, D. [Helmholtz Zentrum, D14109 Berlin (Germany); Flerov Laboratory of Nuclear Reactions, JINR, Dubna, Moscow region (Russian Federation); Flerov Laboratory of Nuclear Reactions, JINR, Dubna, Moscow region (Russian Federation) and Helmholtz Zentrum, D14109 Berlin (Germany)

2012-10-20T23:59:59.000Z

172

Colour videos with depth : acquisition, processing and evaluation  

E-Print Network (OSTI)

. Declaration This dissertation is the result of my own work and includes nothing which is the outcome of work done in collaboration except where specifically indicated in the text. This dissertation does not exceed the regulation length of 60 000 words... -step pipeline that aligns the video streams, efficiently removes and fills invalid and noisy geometry, and finally uses a spatiotemporal filter to increase the spatial resolution of the depth data and strongly reduce depth measurement noise. I show...

Richardt, Christian

2012-03-06T23:59:59.000Z

173

A Comparison of VHF Radar Vertical-Velocity Measurements by a Direct Vertical-Beam Method and by a VAD Technique  

Science Conference Proceedings (OSTI)

Vertical-velocity measurements made by a direct vertical-beam method are compared to vertical velocities derived from VAD (velocity-azimuth display) measurements over a 27-h period. The results indicate that the two types of measurements in ...

M. F. Larsen; S. Fukao; O. Aruga; M. D. Yamanaka; T. Tsuda; S. Kato

1991-12-01T23:59:59.000Z

174

Airfoil treatments for vertical axis wind turbines  

SciTech Connect

Sandia National Laboratories (SNL) has taken three airfoil related approaches to decreasing the cost of energy of vertical axis wind turbine (VAWT) systems; airfoil sections designed specifically for VAWTs, vortex generators (VGs), and ''pumped spoiling.'' SNL's blade element airfoil section design effort has led to three promising natural laminar flow (NLF) sections. One section is presently being run on the SNL 17-m turbine. Increases in peak efficiency and more desirable dynamic stall regulation characteristics have been observed. Vane-type VGs were fitted on one DOE/Alcoa 100 kW VAWT. With approximately 12% of span having VGs, annual energy production increased by 5%. Pumped spoiling utilizes the centrifugal pumping capabilities of hollow blades. With the addition of small perforations in the surface of the blades and valves controlled by windspeed at the ends of each blade, lift spoiling jets may be generated inducing premature stall and permitting lower capacity, lower cost drivetrain components. SNL has demonstrated this concept on its 5-m turbine and has wind tunnel tested perforation geometries on one NLF section.

Klimas, P.C.

1985-01-01T23:59:59.000Z

175

Condensation of refrigerants on vertical fluted tubes  

DOE Green Energy (OSTI)

Experiments were run to determine heat transfer performance of single vertical fluted tubes with selected fluids condensing on the outside. Working fluids included six fluorocarbons (Refrigerants 11, 21, 22, 113, 114, and 115) and a hydrocarbon (Refrigerant 600a or isobutane). The nine test tubes were of 2.54-cm (1-in.) nominal outside diameter and 1.2 m (4 ft) in length with from 0 (smooth) to 60 axial flutes. Condensing heat transfer coefficients ranged from 620 to 7900 W/m/sup 2/ . K (110 to 1400 Btu/hr . ft/sup 2/ . /sup 0/F) over the heat flux range of 2000 to 43,000 W/m/sup 2/ (920 to 13,600 Btu/hr . ft/sup 2/). All parameters are based on total condensing surface area. The data show that, for a given heat flux, a fluted tube can increase condensing coefficients up to 6.0 times smooth tube values. Further heat transfer enhancement was achieved by the use of drainage skirts on fluted tubes; these skirts effectively divided the 1.2-m (4-ft) tubes into two, four, and eight equal condensing lengths.

Combs, S.K.; Mailen, G.S.; Murphy, R.W.

1978-08-01T23:59:59.000Z

176

Engineering design of vertical test stand cryostat  

SciTech Connect

Under Indian Institutions and Fermilab collaboration, Raja Ramanna Centre for Advanced Technology and Fermi National Accelerator Laboratory are jointly developing 2K Vertical Test Stand (VTS) cryostats for testing SCRF cavities at 2K. The VTS cryostat has been designed for a large testing aperture of 86.36 cm for testing of 325 MHz Spoke resonators, 650 MHz and 1.3 GHz multi-cell SCRF cavities for Fermilab's Project-X. Units will be installed at Fermilab and RRCAT and used to test cavities for Project-X. A VTS cryostat comprises of liquid helium (LHe) vessel with internal magnetic shield, top insert plate equipped with cavity support stand and radiation shield, liquid nitrogen (LN{sub 2}) shield and vacuum vessel with external magnetic shield. The engineering design and analysis of VTS cryostat has been carried out using ASME B&PV Code and Finite Element Analysis. Design of internal and external magnetic shields was performed to limit the magnetic field inside LHe vessel at the cavity surface <1 {micro}T. Thermal analysis for LN{sub 2} shield has been performed to check the effectiveness of LN{sub 2} cooling and for compliance with ASME piping code allowable stresses.

Suhane, S.K.; Sharma, N.K.; Raghavendra, S.; Joshi, S.C.; Das, S.; Kush, P.K.; Sahni, V.C.; Gupta, P.D.; /Indore, Ctr. for Advanced Tech.; Sylvester, C.; Rabehl, R.; Ozelis, J.; /Fermilab

2011-03-01T23:59:59.000Z

177

Optimal Location of Vertical Wells: A Decomposition Approach  

E-Print Network (OSTI)

Optimal Location of Vertical Wells: A Decomposition Approach M.G. Ierapetritou and C.A. Floudas 1 correspondence should be addressed 1 #12; Abstract The generation of a reservoir development plan with well the optimal vertical well locations is formulated as a MILP problem where the binary variables correspond

178

Vertical Motion in the Gulf Stream Near 68W  

Science Conference Proceedings (OSTI)

The authors compute and compare vertical motions from three different data sources within a 300-km square domain centered in the Gulf Stream near 38N, 68W, and show that vertical motions inferred from all three independent data sources and ...

Scott S. Lindstrom; D. Pandolph Watts

1994-11-01T23:59:59.000Z

179

ARM - Evaluation Product - Vertical Air Motion during Large-Scale  

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

ProductsVertical Air Motion during Large-Scale ProductsVertical Air Motion during Large-Scale Stratiform Rain Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Vertical Air Motion during Large-Scale Stratiform Rain Site(s) NIM SGP General Description The Vertical Air Motion during Large-Scale Stratiform Rain (VERVELSR) value-added product (VAP) uses the unique properties of a 95-GHz radar Doppler velocity spectra to produce vertical profiles of air motion during low-to-moderate (1-20 mm/hr) rainfall events It is designed to run at ARM sites that include a W-band ARM cloud radar (WACR) radar with spectra data processing. The VERVELSR VAP, based on the work of Giangrande et al. (2010), operates by exploiting a resonance effect that occurs in

180

Steerable vertical to horizontal energy transducer for mobile robots  

DOE Patents (OSTI)

The present invention provides a steerable vertical to horizontal energy transducer for mobile robots that less complex and requires less power than two degree of freedom tilt mechanisms. The present invention comprises an end effector that, when mounted with a hopping actuator, translates along axis (typically vertical) actuation into combined vertical and horizontal motion. The end effector, or foot, mounts with an end of the actuator that moves toward the support surface (typically a floor or the earth). The foot is shaped so that the first contact with the support surface is off the axis of the actuator. Off-axis contact with the support surface generates an on-axis force (typically resulting in vertical motion) and a moment orthogonal to the axis. The moment initiates a horizontal tumbling motion, and tilts the actuator so that its axis is oriented with a horizontal component and continued actuation generates both vertical and horizontal force.

Spletzer, Barry L. (Albuquerque, NM); Fischer, Gary J. (Albuquerque, NM); Feddema, John T. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Depth profiling of tritium by neutron time-of-flight  

SciTech Connect

A method was developed to measure the depth profile of tritium implanted or absorbed in materials. The sample to be analyzed is bombarded with a pulsed proton beam and the energy of neutrons produced by the T(p,n) reaction is measured by the time-of-flight technique. From the neutron energy the depth in the target of the T atoms may be inferred. A sensitivity of 0.1 at. percent T or greater is possible. The technique is non-destructive and may be used with thick or radioactive host materials. Samples up to 20 $mu$m in thickness may be profiled with resolution limited by straggling of the proton beam for depths greater than 1 $mu$m. Deuterium depth profiling has been demonstrated using the D(d,n) reaction. The technique has been used to observe the behavior of an implantation spike of T produced by a 400 keV T$sup +$ beam stopping at a depth of 3 $mu$m in 11 $mu$m thick layers of Ti and TiH. The presence of H in the Ti lattice is observed to inhibit the diffusion of T through the lattice. Effects of the total hydrogen concentration (H + T) being forced above stoichiometry at the implantation site are suggested by the shapes of the implanation spikes. (auth)

Davis, J.C.; Anderson, J.D.; Lefevre, H.W.

1975-01-01T23:59:59.000Z

182

Hydrodynamics of a vertical hydraulic fracture  

DOE Green Energy (OSTI)

We have developed a numerical algorithm, HUBBERT, to simulate the hydrodynamics of a propagating vertical, rectangular fracture in an elastic porous medium. Based on the IFD method, this algorithm assumes fracture geometry to be prescribed. The breakdown and the creation of the incipient fracture is carried out according to the Hubbert-Willis theory. The propagation of the fracture is based on the criterion provided by Griffith, based on energy considerations. The deformation properties of the open fracture are based on simple elasticity solutions. The fracture is assumed to have an elliptical shape to a distance equal to the fracture height, beyond which the shape is assumed to be parallel plate. A consequence of Griffith's criterion is that the fracture must propagate in discrete steps. The parametric studies carried out suggest that for a clear understanding of the hydrodynamics of the hydraulic fracture many hitherto unrecognized parameters must be better understood. Among these parameters one might mention, efficiency, aperture of the newly formed fracture, stiffness of the newly formed fracture, relation between fracture aperture and permeability, and well bore compliance. The results of the studies indicate that the patterns of pressure transients and the magnitudes of fracture length appear to conform to field observations. In particular, the discrete nature of fracture propagation as well as the relevant time scales of interest inferred from the present work seem to be corroborated by seismic monitoring in the field. The results suggest that the estimation of least principal stress can be reliably made either with shut in data or with reinjection data provided that injection rates are very small.

Narasimhan, T.N.

1987-03-24T23:59:59.000Z

183

Heat Flow At Standard Depth | 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 » Heat Flow At Standard Depth Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Heat Flow At Standard Depth Details Activities (2) Areas (1) Regions (0) Abstract: Secular and long-term periodic changes in surface temperature cause perturbations to the geothermal gradient which may be significant to depths of at least 1000 m, and major corrections are required to determine absolute values of heat flow from the Earth's interior. However, detailed climatic models remain contentious and estimates of error in geothermal gradients differ widely. Consequently, regions of anomalous heat flow which

184

ARM - Evaluation Product - Aerosol Optical Depths from SASHE  

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

ProductsAerosol Optical Depths from SASHE ProductsAerosol Optical Depths from SASHE Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Aerosol Optical Depths from SASHE Site(s) PVC SGP General Description The Shortwave Array Spectroradiometer Hemispheric (SASHE) is a ground-based instrument that measures both direct and diffuse shortwave irradiance. In this regard, the instrument is similar to the multifilter rotating shadowband radiometer (MFRSR)-an instrument that has been in the ARM Facility stable for more than 15 years. However, the two instruments differ significantly in wavelength resolution and range. In particular, the SASHE provides hyperspectral measurements from about 350 nm to 1700 nm at a wavelength resolution from 1 to several nanometers, while the MFRSR only

185

Depth recovery using an adaptive color-guided auto-regressive model  

Science Conference Proceedings (OSTI)

This paper proposes an adaptive color-guided auto-regressive (AR) model for high quality depth recovery from low quality measurements captured by depth cameras. We formulate the depth recovery task into a minimization of AR prediction errors subject ... Keywords: AR model, depth camera, depth recovery, nonlocal filtering

Jingyu Yang; Xinchen Ye; Kun Li; Chunping Hou

2012-10-01T23:59:59.000Z

186

The Ocean general circulation near 1000 m depth  

Science Conference Proceedings (OSTI)

The mean Ocean circulation near 1000 m depth is estimated with a 100 km resolution from the Argo float displacements collected before January 1 2010. After a thorough validation, the 400 000 or so displacements found in the [950, 1150] dbar layer ...

Michel Ollitrault; Alain Colin de Verdire

187

Trap-depth determination from residual gas collisions  

SciTech Connect

We present a method for determining the depth of an atomic or molecular trap of any type. This method relies on a measurement of the trap loss rate induced by collisions with background gas particles. Given a fixed gas composition, the loss rate uniquely determines the trap depth. Because of the ''soft'' long-range nature of the van der Waals interaction, these collisions transfer kinetic energy to trapped particles across a broad range of energy scales, from room temperature to the microkelvin energy scale. The resulting loss rate therefore exhibits a significant variation over an enormous range of trap depths, making this technique a powerful diagnostic with a large dynamic range. We present trap depth measurements of a Rb magneto-optical trap using this method and a different technique that relies on measurements of loss rates during optical excitation of colliding atoms to a repulsive molecular state. The main advantage of the method presented here is its large dynamic range and applicability to traps of any type requiring only knowledge of the background gas density and the interaction potential between the trapped and background gas particles.

Van Dongen, J.; Zhu, C.; Clement, D.; Dufour, G.; Madison, K. W. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, V6T 1Z1 (Canada); Booth, J. L. [Physics Department, British Columbia Institute of Technology, 3700 Willingdon Avenue, Burnaby, British Columbia, V5G 3H2 (Canada)

2011-08-15T23:59:59.000Z

188

Computational depth complexity of measurement-based quantum computation  

E-Print Network (OSTI)

We prove that one-way quantum computations have the same computational power as quantum circuits with unbounded fan-out. It demonstrates that the one-way model is not only one of the most promising models of physical realisation, but also a very powerful model of quantum computation. It confirms and completes previous results which have pointed out, for some specific problems, a depth separation between the one-way model and the quantum circuit model. Since one-way model has the same computational power as unbounded quantum fan-out circuits, the quantum Fourier transform can be approximated in constant depth in the one-way model, and thus the factorisation can be done by a polytime probabilistic classical algorithm which has access to a constant-depth one-way quantum computer. The extra power of the one-way model, comparing with the quantum circuit model, comes from its classical-quantum hybrid nature. We show that this extra power is reduced to the capability to perform unbounded classical parity gates in constant depth.

Dan E. Browne; Elham Kashefi; Simon Perdrix

2009-09-25T23:59:59.000Z

189

Inferring Optical Depth of Broken Clouds from Landsat Data  

Science Conference Proceedings (OSTI)

Optical depths ?pp for broken, shallow clouds over ocean were inferred from Landsat cloud reflectances Rcld (0.83 ?m) with horizontal resolution of 28.5 m. The values ?pp were obtained by applying an inverse, homogeneous, plane-parallel radiance ...

Howard W. Barker; Damin Liu

1995-11-01T23:59:59.000Z

190

Interactions in the air: adding further depth to interactive tabletops  

Science Conference Proceedings (OSTI)

Although interactive surfaces have many unique and compelling qualities, the interactions they support are by their very nature bound to the display surface. In this paper we present a technique for users to seamlessly switch between interacting on the ... Keywords: 3D, 3D graphics, computer vision, depth-sensing cameras, holoscreen, interactive surfaces, surfaces, switchable diffusers, tabletop

Otmar Hilliges; Shahram Izadi; Andrew D. Wilson; Steve Hodges; Armando Garcia-Mendoza; Andreas Butz

2009-10-01T23:59:59.000Z

191

VERTICAL MIGRATION OF RADIONUCLIDES IN THE VICINITY OF THE CHERNOBYL CONFINEMENT SHELTER  

SciTech Connect

Studies on vertical migration of Chernobyl-origin radionuclides in the 5-km zone of the Chernobyl Nuclear Power Plant (ChNPP) in the area of the Red Forest experimental site were completed. Measurements were made by gamma spectrometric methods using high purity germanium (HPGe) detectors with beryllium windows. Alpha-emitting isotopes of plutonium were determined by the measurement of the x-rays from their uranium progeny. The presence of {sup 60}Co, {sup 134,137}Cs, {sup 154,155}Eu, and {sup 241}Am in all soil layers down to a depth of 30 cm was observed. The presence of {sup 137}Cs and {sup 241}Am were noted in the area containing automorphous soils to a depth of 60 cm. In addition, the upper soil layers at the test site were found to contain {sup 243}Am and {sup 243}Cm. Over the past ten years, the {sup 241}Am/{sup 137}Cs ratio in soil at the experimental site has increased by a factor of 3.4, nearly twice as much as would be predicted based solely on radioactive decay. This may be due to 'fresh' fallout emanating from the ChNPP Confinement Shelter.

Farfan, E.; Jannik, T.; Marra, J.

2011-10-01T23:59:59.000Z

192

P-odd, P-even, and T-odd asymmetries in true quaternary fission of nuclei  

Science Conference Proceedings (OSTI)

The coefficients of P-odd, P-even, and T -odd asymmetries for a third and a fourth prescission particle emitted in the true quaternary fission of nuclei that was induced by polarized cold neutrons were studied on the basis of quantum-mechanical fission theory. By using non-evaporation (nonadiabatic) mechanisms of light-particle emission, these coefficients were compared with the analogous coefficients for prescission third particles emitted in the ternary fission of nuclei.

Kadmensky, S. G., E-mail: kadmensky@phys.vsu.ru; Titova, L. V. [Voronezh State University (Russian Federation)] [Voronezh State University (Russian Federation)

2013-04-15T23:59:59.000Z

193

Reveal the True Biology: Exploiting Single-Molecule Real-Time DNA Sequencing for Improved Microbial Assembly and Methylome Analysis ( 7th Annual SFAF Meeting, 2012)  

Science Conference Proceedings (OSTI)

Steve Turner's talk "Reveal the True Biology" at the 2012 Sequencing, Finishing, Analysis in the Future Meeting held June 5-7, 2012 in Santa Fe, New Mexico.

Turner, Steve [Pacific Biosciences

2012-06-01T23:59:59.000Z

194

Estimating Snow Water Equivalent Using Snow Depth Data and Climate Classes  

Science Conference Proceedings (OSTI)

In many practical applications snow depth is known, but snow water equivalent (SWE) is needed as well. Measuring SWE takes 20 times as long as measuring depth, which in part is why depth measurements outnumber SWE measurements worldwide. Here a ...

Matthew Sturm; Brian Taras; Glen E. Liston; Chris Derksen; Tobias Jonas; Jon Lea

2010-12-01T23:59:59.000Z

195

Conventional Energy Forum & Associated Vertical Business Development: Best  

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

Conventional Energy Forum & Associated Vertical Business Conventional Energy Forum & Associated Vertical Business Development: Best Practices in Indian Country Conventional Energy Forum & Associated Vertical Business Development: Best Practices in Indian Country March 1, 2012 Las Vegas, Nevada Mandalay Bay Resort & Casino The Office of Indian Energy Tribal Leader Energy Forum on "Conventional Energy (Oil, Gas, and Coal) Forum & Associated Vertical Business Development: Best Practices in Indian Country" was held March 1, 2012, in Las Vegas, Nevada. The forum focused on recent trends, existing successful partnerships, and perspectives on the future of conventional energy and how tribal business interests are evolving to meet the interests and needs of new tribal energy economies. The forucm provided an opportunity for tribal

196

Horizontal and Vertical Structure of the Lake Turkana Jet  

Science Conference Proceedings (OSTI)

An observational study was undertaken at selected sites in north Kenya (Turkana channel) in February 1983 and in JuneJuly 1984 to investigate the horizontal and vertical extent of the Turkana low-level jet. Observations indicate that strong ...

Joseph Hiri Kinuthia

1992-11-01T23:59:59.000Z

197

Vertical Pretreatment Reactor System (Poster), NREL (National Renewable Energy Laboratory)  

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

Vertical Pretreatment Reactor System Vertical Pretreatment Reactor System Two-vessel system for primary and secondary pretreatment at diff erent temperatures * Biomass is heated by steam injection to temperatures of 120°C to 210°C in the pressurized mixing tube * Preheated, premixed biomass is retained for specified residence time in vertical holding vessel; material continuously moves by gravity from top to bottom of reactor in plug-fl ow fashion * Residence time is adjusted by changing amount of material held in vertical vessel relative to continuous fl ow of material entering and exiting vessel * Optional additional reactor vessel allows for secondary pretreatment at lower temperatures-120°C to 180°C-with potential to add other chemical catalysts * First vessel can operate at residence

198

Vertical Velocity Structures in an Axisymmetric, Nonhydrostatic Tropical Cyclone Model  

Science Conference Proceedings (OSTI)

A statistical analysis of several experiments with different microphysical parameterizations in an axisymmetric, nonhydrostatic tropical cyclone model illustrates the impact of icc-phase microphysics on model vertical velocity structure. The ...

Stephen J. Lord; Jacqueline M. Lord

1988-05-01T23:59:59.000Z

199

Turbulent Vertical Kinetic Energy in the Ocean Mixed Layer  

Science Conference Proceedings (OSTI)

Vertical velocities in the ocean boundary layer were measured for two weeks at an open ocean, wintertime site using neutrally buoyant floats. Simultaneous measurements of the surface meteorology and surface waves showed a large variability in ...

Eric A. D'Asaro

2001-12-01T23:59:59.000Z

200

The Tropical Convective Spectrum. Part I: Archetypal Vertical Structures  

Science Conference Proceedings (OSTI)

A taxonomy of tropical convective and stratiform vertical structures is constructed through cluster analysis of 3 yr of Tropical Rainfall Measuring Mission (TRMM) warm-season (surface temperature greater than 10C) precipitation radar (PR) ...

Dennis J. Boccippio; Walter A. Petersen; Daniel J. Cecil

2005-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Effects of Vertical Wind Shear on Tropical Cyclone Precipitation  

Science Conference Proceedings (OSTI)

The response of the precipitation field for tropical cyclones in relation to the surrounding environmental vertical wind shear has been investigated using 20 000 snapshots of passive-microwave satellite rain rates. Composites of mean rain rates, ...

Matthew T. Wingo; Daniel J. Cecil

2010-03-01T23:59:59.000Z

202

The Vertical Structure of New England Coastal Fronts  

Science Conference Proceedings (OSTI)

Aircraft data from the New England Winter Storms Experiment (NEWSEX) are used to examine the vertical structure of four New England coastal fronts. The aircraft made multiple passes at varying elevations through the coastal fronts. The ...

John W. Nielsen; Peter P. Neilley

1990-09-01T23:59:59.000Z

203

Assessment of Vertically Integrated Liquid (VIL) Water Content Radar Measurement  

Science Conference Proceedings (OSTI)

Vertically integrated liquid (VIL) water content is a parameter obtained from a radar performing voluminal scanning. This parameter has proven useful in the detection of severe storms and may be a worthwhile indicator for very short-term rainfall ...

Brice Boudevillain; Herv Andrieu

2003-06-01T23:59:59.000Z

204

Parameterization of Vertical Mixing in Numerical Models of Tropical Oceans  

Science Conference Proceedings (OSTI)

Measurements indicate that mixing processes are intense in the surface layers of the ocean but weak below the thermocline, except for the region below the core of the Equatorial Undercurrent where vertical temperature gradients are small and the ...

R. C. Pacanowski; S. G. H. Philander

1981-11-01T23:59:59.000Z

205

Reexamining the Vertical Development of Tornadic Vortex Signatures in Supercells  

Science Conference Proceedings (OSTI)

Observations from a hybrid phased-array Doppler radar, the Mobile Weather Radar, 2005 X-band, Phased-Array (MWR-05XP), were used to investigate the vertical development of tornadic vortex signatures (TVSs) during supercell tornadogenesis. Data ...

Michael M. French; Howard B. Bluestein; Ivan PopStefanija; Chad A. Baldi; Robert T. Bluth

206

A Vertical Wind Tunnel for Snow Process Studies  

Science Conference Proceedings (OSTI)

A vertical wind tunnel using an artificially generated supercooled cloud was constructed to study snowfall processes. It is 18 m high and operates to a temperature as low as ?25C. Ultrasonic atomizers supply the supercooled water droplets, and ...

Tsuneya Takahashi; Chikara Inoue; Yoshinori Furukawa; Tatsuo Endoh; Renji Naruse

1986-03-01T23:59:59.000Z

207

Diagnosing Mesoscale Vertical Motion from Horizontal Velocity and Density Data  

Science Conference Proceedings (OSTI)

The mesoscale vertical velocity is obtained by solving a generalized omega equation (? equation) using density and horizontal velocity data from three consecutive quasi-synoptic high-resolution surveys in the Alboran Sea. The Atlantic Jet (AJ) ...

Enric Palls Sanz; lvaro Videz

2005-10-01T23:59:59.000Z

208

What Controls the Vertical Extent of Continental Shallow Cumulus...  

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

what controls the vertical extent of shallow cumulus. Higher boundary-layer relative humidity is found on thick-cloud days, associated with large-scale moisture advection before...

209

Deduction of Vertical Motion in the Atmosphere from Aircraft Measurements  

Science Conference Proceedings (OSTI)

Equations for deducing the vertical motion of air based on aircraft measurements are presented along with derivations. The equations are based on the aircraft equations of motion, but due to different assumptions, the resulting equations are ...

Fred J. Kopp

1985-12-01T23:59:59.000Z

210

Stable Schemes for Nonlinear Vertical Diffusion in Atmospheric Circulation Models  

Science Conference Proceedings (OSTI)

The intensity of vertical mixing in atmospheric models generally depends on wind shear and static stability, making the diffusion process nonlinear. Traditional implicit numerical schemes, which treat the variables to be diffused implicitly but ...

Claude Girard; Yves Delage

1990-03-01T23:59:59.000Z

211

An ecological perceptual aid for precision vertical landings  

E-Print Network (OSTI)

Pilots of vertical landing vehicles face numerous control challenges which often involve the loss of outside visual perceptual cues or the control of flight parameters within tight constraints. These challenges are often ...

Smith, Cristin Anne

2006-01-01T23:59:59.000Z

212

Vertical Motions in Arctic Mixed-Phase Stratiform Clouds  

Science Conference Proceedings (OSTI)

The characteristics of Arctic mixed-phase stratiform clouds and their relation to vertical air motions are examined using ground-based observations during the Mixed-Phase Arctic Cloud Experiment (MPACE) in Barrow, Alaska, during fall 2004. The ...

Matthew D. Shupe; Pavlos Kollias; P. Ola G. Persson; Greg M. McFarquhar

2008-04-01T23:59:59.000Z

213

Observations of Vertical Wind Shear Heterogeneity in Convective Boundary Layers  

Science Conference Proceedings (OSTI)

Dual-Doppler wind syntheses from mobile radar observations obtained during the International H2O Project document some of the spatial variability of vertical wind profiles in convective boundary layers. Much of the variability of popular ...

Paul Markowski; Yvette Richardson

2007-03-01T23:59:59.000Z

214

Wirewalker: An Autonomous Wave-Powered Vertical Profiler  

Science Conference Proceedings (OSTI)

An inexpensive vertically profiling float that draws its energy from the ocean surface wavefield is described. Termed the Wirewalker, it is a generalized platform capable of supporting a variety of self-contained instruments. The motion of the ...

Luc Rainville; Robert Pinkel

2001-06-01T23:59:59.000Z

215

Varieties of Fully Resolved Spectra of Vertical Shear  

Science Conference Proceedings (OSTI)

The Multi-Scale profiler (MSP) resolves shear between vertical wavenumbers of 0.01 cpm and the viscous cutoff of small-scale turbulence. Observations from five sites reveal varied spectral shapes and amplitudes. Spectral amplitudes measured at ...

M. C. Gregg; D. P. Winkel; T. B. Sanford

1993-01-01T23:59:59.000Z

216

Solar Radiative Transfer in Clouds with Vertical Internal Inhomogeneity  

Science Conference Proceedings (OSTI)

To investigate the photon transport in inhomogeneous clouds, a Monte Carlo cloud model with internal variation of optical properties is developed. The data for cloud vertical internal inhomogeneity are chosen from published observations. ...

J. Li; D. J. W. Geldart; Petr Chlek

1994-09-01T23:59:59.000Z

217

A Parameterization of Vertical Dispersion of Ground-Level Releases  

Science Conference Proceedings (OSTI)

The authors propose a simple parameterization for estimating vertical dispersion in the surface boundary layer. It improves upon methods proposed earlier (e.g., by van Ulden, Briggs, and Pasquill and Smith) in that it is based on simulation ...

Shuming Du; Akula Venkatram

1997-08-01T23:59:59.000Z

218

Vertical Resolution and Accuracy of Atmospheric Infrared Sounding Spectrometers  

Science Conference Proceedings (OSTI)

A theoretical analysis is performed to evaluate the accuracy and vertical resolution of atmospheric profiles obtained with the HIRS/2, GOES I/M, and HIS instruments. In addition, a linear simultaneous retrieval algorithm is used with aircraft ...

Hung-Lung Huang; William L. Smith; Harold M. Woolf

1992-03-01T23:59:59.000Z

219

Unusually Strong Vertical Motions in a Caribbean Hurricane  

Science Conference Proceedings (OSTI)

Unusually strong updrafts and downdrafts in the eyewall of Hurricane Emily (1987) during its rapidly deepening phase are documented by both in situ aircraft measurements and a vertically pointing Doppler radar. Updrafts and downdrafts as strong ...

Robert A. Black; Howard B. Bluestein; Michael L. Black

1994-12-01T23:59:59.000Z

220

The Vertical Partition of Oceanic Horizontal Kinetic Energy  

Science Conference Proceedings (OSTI)

To produce an interpretation of the surface kinetic energy as measured by altimeters, a survey is made of the vertical structure of kinetic energy profiles in a large number of globally distributed long current meter records. Although the data ...

Carl Wunsch

1997-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Vertical Mode Initialization in a Limited Area Data Assimilation Experiment  

Science Conference Proceedings (OSTI)

A previously reported 9-day limited area data assimilation experiment has been reported, incorporating a recently developed nonlinear vertical mode initialization scheme. It is shown that the initialization scheme significantly reduces surfaces ...

G. A. Mills; J. L. McGregor

1983-10-01T23:59:59.000Z

222

Solitary Rossby Waves in the Presence of Vertical Shear  

Science Conference Proceedings (OSTI)

An investigation is made to determine the effects of vertical shear on regular neutral mode Rossby solitons for application to planetary atmospheres. The basic zonal flow consists of two fluid layers on a ?plane, each with different mean ...

P. D. Weidman; L. G. Redekopp

1980-10-01T23:59:59.000Z

223

Profiler Measurements of Vertical Velocity Fluctuations in the Ocean  

Science Conference Proceedings (OSTI)

A method is described for measuring the vertical component of velocity fluctuations due to three-dimensional turbulence in the ocean from a freely falling microstructure profiler. The dynamic pressure measurement relies on a commercially ...

J. N. Moum

1990-04-01T23:59:59.000Z

224

How Much Energy Propagates Vertically in the Equatorial Oceans?  

Science Conference Proceedings (OSTI)

Vertically propagating linear wave calculations using realistic equatorial buoyancy profiles are presented which show the percentage of the downward surface energy flux that reaches the deep equatorial oceans. The percentages vary widely ...

Peter R. Gent; James R. Luyten

1985-07-01T23:59:59.000Z

225

The Rapid-Sampling Vertical Profiler: An Evaluation  

Science Conference Proceedings (OSTI)

Evaluation of the Rapid-Sampling Vertical Profiler, which was developed for sampling the hydrophysical fields in the upper ocean from a moving vessel, shows that the instrument is useful for near-microscale measurements of temperature and ...

D. R. Caldwell; T. M. Dillon; J. N. Moum

1985-12-01T23:59:59.000Z

226

Generation Maintenance Applications Center: Conventional Vertical Pump Maintenance Guide  

Science Conference Proceedings (OSTI)

Vertical pumps are used in several applications in power plants, such as condensate, heater drain, circulating water, and service water/river water applications.BackgroundThe Maintenance Issue Surveys of the Electric Power Research Institute (EPRI) Generation Maintenance Applications Center (GenMAC) indicate that members are experiencing difficulties with various maintenance issues associated with vertical pumps. Some of the problems identified a need for ...

2013-12-19T23:59:59.000Z

227

Alignment and operability analysis of a vertical sodium pump  

SciTech Connect

With the objective of identifying important alignment features of pumps such as FFTF, HALLAM, EBR II, PNC, PHENIX, and CRBR, alignment of the vertical sodium pump for the Clinch River Breeder Reactor Plant (CRBRP) is investigated. The CRBRP pump includes a flexibly coupled pump shaft and motor shaft, two oil-film tilting-pad hydrodynamic radial bearings in the motor plus a vertical thrust bearing, and two sodium hydrostatic bearings straddling the double-suction centrifugal impeller in the pump.

Gupta, V.K.; Fair, C.E.

1981-01-01T23:59:59.000Z

228

A Comparison of Techniques to Estimate Vertical Air Motions and Raindrop Size Distributions  

Science Conference Proceedings (OSTI)

Doppler velocity spectra collected at vertical incidence contain information on vertical air motions and drop-size distributions with high spatial and temporal resolution. In the past, the computational interdependence between vertical air ...

Karen L. Sangren; Peter S. Ray; Gene B. Walker

1984-06-01T23:59:59.000Z

229

The External Scale of Clear Air Turbulence Derived from the Vertical Ozone Profile: Application to Vertical Transport Measurement  

Science Conference Proceedings (OSTI)

Using a high-resolution stratospheric ozonometer it has been possible to obtain vertical ozone profiles in which microfluctuations may be interpreted as the consequence of eddy diffusion. Applying Kolmogoroff's theory to the signal, one can ...

J. Barat; P. Aimedieu

1981-03-01T23:59:59.000Z

230

Vertical Velocity and Vertical Heat Flux Observed within Loop Current Eddies in the Central Gulf of Mexico  

Science Conference Proceedings (OSTI)

Sixteen months of observations from a surface-to-bottom mooring in the central Gulf of Mexico show that acoustic Doppler current profilers (ADCPs) are useful for directly measuring the vertical velocity within mesoscale anticyclonic eddies, such ...

David Rivas; Antoine Badan; Julio Sheinbaum; Jos Ochoa; Julio Candela

2008-11-01T23:59:59.000Z

231

Assessing the Radiative Impact of Clouds of Low Optical Depth  

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

the Radiative Impact of Clouds of the Radiative Impact of Clouds of Low Optical Depth W. O'Hirok and P. Ricchiazzi Institute for Computational Earth System Science University of California Santa Barbara, California C. Gautier Department of Geography and Institute for Computational Earth System Science University of California Santa Barbara, California Introduction Analysis from the International Satellite Cloud Climatology Project (ISCCP) reveals that the global mean cloud optical depth is surprisingly low (i.e., τ = 3.8). While this value is probably dominated by extensive fields of cirrus, the average for liquid water clouds is also likely smaller than expected. It is in this regime (τ <10) where remote measurements of cloud optical thickness or liquid water path (LWP)

232

The Vertical Ball Mill for the Grinding of Calcined Petroleum Coke to ...  

Science Conference Proceedings (OSTI)

A new vertical ball ring mill concept has been developed based on the results of research on the grinding of calcined petroleum coke. Industrial vertical mills are...

233

DUCTED FAN INLET/EXIT AND ROTOR TIP FLOWIMPROVEMENTS FOR VERTICAL LIFT SYSTEMS.  

E-Print Network (OSTI)

??Ducted fan based vertical lift systems are excellent candidates to be in the group of the next generation vertical lift vehicles, with many potential applications (more)

Akturk, Ali

2010-01-01T23:59:59.000Z

234

Euler:=proc(f,y_true,a,b,N,alpha) local w,h,i, ptlist; w:=alpha; h:=evalf ...  

E-Print Network (OSTI)

5.2.6. > Euler:=proc(f,y_true,a,b,N,alpha) local w,h,i, ptlist; w:=alpha; h:=evalf((b-a )/N); ptlist:=[a,w]; print(a,w,y_true(a)); for i from 0 to N-1 do w:=evalf(w+h*f(a+i*h...

235

Using depth-normalized coordinates to examine mass transport residual circulation in estuaries with large tidal amplitude relative to the mean depth  

Science Conference Proceedings (OSTI)

Residual (subtidal) circulation profiles in estuaries with a large tidal amplitude to depth ratio often are quite complex and do not resemble the traditional estuarine gravitational circulation profile. In this paper we show how a depth-normalized,...

Sarah N. Giddings; Stephen G. Monismith; Derek A. Fong; Dr. Mark T. Stacey

236

Climatology of aerosol optical depth in north?central Oklahoma: 19922008  

SciTech Connect

Aerosol optical depth (AOD) has been measured at the Atmospheric Radiation Measurement Program central facility near Lamont, Oklahoma, since the fall of 1992. Most of the data presented are from the multifilter rotating shadowband radiometer, a narrow?band, interference?filter Sun radiometer with five aerosol bands in the visible and near infrared; however, AOD measurements have been made simultaneously and routinely at the site by as many as three different types of instruments, including two pointing Sun radiometers. Scatterplots indicate high correlations and small biases consistent with earlier comparisons. The early part of this 16 year record had a disturbed stratosphere with residual Mt. Pinatubo aerosols, followed by the cleanest stratosphere in decades. As such, the last 13 years of the record reflect changes that have occurred predominantly in the troposphere. The field calibration technique is briefly described and compared to Langley calibrations from Mauna Loa Observatory. A modified cloudscreening technique is introduced that increases the number of daily averaged AODs retrieved annually to about 250 days compared with 175 days when a more conservative method was employed in earlier studies. AODs are calculated when the air mass is less than six; that is, when the Suns elevation is greater than 9.25. The more inclusive cloud screen and the use of most of the daylight hours yield a data set that can be used to more faithfully represent the true aerosol climate for this site. The diurnal aerosol cycle is examined month?by?month to assess the effects of an aerosol climatology on the basis of infrequent sampling such as that from satellites.

Michalsky, Joseph J.; Denn, Frederick; Flynn, Connor J.; Hodges, G. B.; Kiedron, Piotr; Koontz, Annette S.; Schlemmer, James; Schwartz, Stephen E.

2010-04-13T23:59:59.000Z

237

Climatology of aerosol optical depth in North-Central Oklahoma: 1992-2008  

SciTech Connect

Aerosol optical depth (AOD) has been measured at the Atmospheric Radiation Measurement Program central facility near Lamont, Oklahoma, since the fall of 1992. Most of the data presented are from the multifilter rotating shadowband radiometer, a narrow-band, interference-filter Sun radiometer with five aerosol bands in the visible and near infrared; however, AOD measurements have been made simultaneously and routinely at the site by as many as three different types of instruments, including two pointing Sun radiometers. Scatterplots indicate high correlations and small biases consistent with earlier comparisons. The early part of this 16 year record had a disturbed stratosphere with residual Mt. Pinatubo aerosols, followed by the cleanest stratosphere in decades. As such, the last 13 years of the record reflect changes that have occurred predominantly in the troposphere. The field calibration technique is briefly described and compared to Langley calibrations from Mauna Loa Observatory. A modified cloud-screening technique is introduced that increases the number of daily averaged AODs retrieved annually to about 250 days compared with 175 days when a more conservative method was employed in earlier studies. AODs are calculated when the air mass is less than six; that is, when the Sun's elevation is greater than 9.25{sup o}. The more inclusive cloud screen and the use of most of the daylight hours yield a data set that can be used to more faithfully represent the true aerosol climate for this site. The diurnal aerosol cycle is examined month-by-month to assess the effects of an aerosol climatology on the basis of infrequent sampling such as that from satellites.

Michalsky, J.; Schwartz, S.; Denn, F.; Flynn, C.; Hodges, G.; Kiedron, P.; Koontz, A.; Schlemmer, J., and Schwartz, S. E

2010-04-01T23:59:59.000Z

238

Determination of vertical profiles of aerosol extinction, single scatter  

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

Determination of vertical profiles of aerosol extinction, single scatter Determination of vertical profiles of aerosol extinction, single scatter albedo and asymmetry parameter at Barrow. Sivaraman, Chitra Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Turner, David University of Wisconsin-Madison Category: Aerosols Efforts are currently underway to run and evaluate the Broadband Heating Rate Profile project at the ARM North Slope of Alaska (NSA) Barrow site for the time period March 2004 - February 2005. The Aerosol Best-Estimate (ABE) Value-Added Procedure (VAP) is to provide continuous estimates of vertical profiles of aerosol extinction, single-scatter albedo, and asymmetry parameter above the Northern Slopes of Alaska (NSA) facility. In the interest of temporal continuity, we have developed an algorithm that

239

Analytical modeling of pulse-pileup distortion using the true pulse shape; applications to Fermi-GBM  

E-Print Network (OSTI)

Pulse-pileup affects most photon counting systems and occurs when photon detections occur faster than the detector's registration and recovery time. At high input rates, shaped pulses interfere and the source spectrum, as well as intensity information, get distorted. For instruments using bipolar pulse shaping there are two aspects to consider: `peak' and `tail' pileup effects, which raise and lower the measured energy, respectively. Peak effects have been extensively modeled in the past. Tail effects have garnered less attention due to the increased complexity: bipolar tails mean the tail pulse-height measurement depends on events in more than one time interval. We leverage previous work to derive an accurate, semi-analytical prediction for peak and tail pileup, up to high orders. We use the true pulse shape from the detectors of the Fermi Gamma-ray Burst Monitor. The measured spectrum is calculated by writing exposure time as a state-space expansion of overlapping pileup states and is valid up to very high rates. This expansion models losses due to fixed and extendable deadtime by averaging overlap configurations. Additionally, the model correctly predicts energy-dependent losses due to tail subtraction (sub-threshold) effects. We discuss pileup losses in terms of the true rate of photon detections versus the recorded count rate.

Vandiver Chaplin; Narayana Bhat; Michael Briggs; Valerie Connaughton

2012-11-28T23:59:59.000Z

240

Campbell penetration depth of a superconductor in the critical state.  

SciTech Connect

The magnetic penetration depth {lambda}(T,H{sub J}) was measured in the presence of a slowly relaxing supercurrent j. In single crystal Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} below approximately 25 K, {lambda}(T,H{sub J}) is strongly hysteretic. We propose that the irreversibility arises from a shift of the vortex position within its pinning well as j changes. The Campbell length depends upon the ratio j/j{sub c} where j{sub c} is the critical current defined through the Labusch parameter. Similar effects were observed in other cuprates and in an organic superconductor.

Prozorov, R.; Giannetta, R. W.; Tamegai, T.; Schlueter, J.; Kini, A. M.; Fournier, P.; Greene, R. L.; Materials Science Division; Univ. of Illinois; Univ. of South Carolina; Univ. of Tokyo; Univ. of Sherbrooke; Univ. of Maryland

2003-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

IntroductionIntroduction The use of small scale vertical axis wind turbinesThe use of small scale vertical axis wind turbines  

E-Print Network (OSTI)

IntroductionIntroduction The use of small scale vertical axis wind turbinesThe use of small scale vertical axis wind turbines (VAWT) is being studied at McMaster University using(VAWT) is being studied

Tullis, Stephen

242

On the Initial Development of Asymmetric Vertical Motion and Horizontal Relative Flow in a Mature Tropical Cyclone Embedded in Environmental Vertical Shear  

Science Conference Proceedings (OSTI)

In this paper, we focus on the initial development of asymmetric vertical motion and horizontal relative flow in a mature tropical cyclone (TC) embedded in an environmental vertical shear. The fully compressible, non-hydrostatic TC model was used ...

Yamei Xu; Yuqing Wang

243

On the Vertical Distribution of Mean Vertical Velocities in the Convective Regions during the Wet and Dry Spells of the Monsoon over Gadanki  

Science Conference Proceedings (OSTI)

The Indian MesosphereStratosphereTroposphere (MST) radar observations of vertical distribution of mean vertical velocities w in convective regions during the wet and dry spells of the Indian summer monsoon over a tropical station at Gadanki, ...

K. N. Uma; K. Kishore Kumar; Siddarth Shankar Das; T. N. Rao; T. M. Satyanarayana

2012-02-01T23:59:59.000Z

244

The effect of aerosol vertical profiles on satellite-estimated surface particle sulfate concentrations  

SciTech Connect

The aerosol vertical distribution is an important factor in determining the relationship between satellite retrieved aerosol optical depth (AOD) and ground-level fine particle pollution concentrations. We evaluate how aerosol profiles measured by ground-based lidar and simulated by models can help improve the association between AOD retrieved by the Multi-angle Imaging Spectroradiometer (MISR) and fine particle sulfate (SO4) concentrations using matched data at two lidar sites. At the Goddard Space Flight Center (GSFC) site, both lidar and model aerosol profiles marginally improve the association between SO4 concentrations and MISR fractional AODs, as the correlation coefficient between cross-validation (CV) and observed SO4 concentrations changes from 0.87 for the no-scaling model to 0.88 for models scaled with aerosol vertical profiles. At the GSFC site, a large amount of urban aerosols resides in the well-mixed boundary layer so the column fractional AODs are already excellent indicators of ground-level particle pollution. In contrast, at the Atmospheric Radiation Measurement Program (ARM) site with relatively low aerosol loadings, scaling substantially improves model performance. The correlation coefficient between CV and observed SO4 concentrations is increased from 0.58 for the no-scaling model to 0.76 in the GEOS-Chem scaling model, and the model bias is reduced from 17% to 9%. In summary, despite the inaccuracy due to the coarse horizontal resolution and the challenges of simulating turbulent mixing in the boundary layer, GEOS-Chem simulated aerosol profiles can still improve methods for estimating surface aerosol (SO4) mass from satellite-based AODs, particularly in rural areas where aerosols in the free troposphere and any long-range transport of aerosols can significantly contribute to the column AOD.

Liu, Yang; Wang, Zifeng; Wang, Jun; Ferrare, Richard A.; Newsom, Rob K.; Welton, Ellsworth J.

2011-02-15T23:59:59.000Z

245

Average Depth of Crude Oil and Natural Gas Wells  

Gasoline and Diesel Fuel Update (EIA)

Depth of Crude Oil and Natural Gas Wells Depth of Crude Oil and Natural Gas Wells (Feet per Well) Period: Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes 2003 2004 2005 2006 2007 2008 View History Exploratory and Development Wells 5,426 5,547 5,508 5,613 6,064 5,964 1949-2008 Crude Oil 4,783 4,829 4,836 4,846 5,111 5,094 1949-2008 Natural Gas 5,616 5,757 5,777 5,961 6,522 6,500 1949-2008 Dry Holes 5,744 5,848 5,405 5,382 5,578 5,540 1949-2008 Exploratory Wells 6,744 6,579 6,272 6,187 6,247 6,322 1949-2008 Crude Oil 6,950 8,136 8,011 7,448 7,537 7,778 1949-2008 Natural Gas 6,589 5,948 5,732 5,770 5,901 5,899 1949-2008 Dry Holes 6,809 6,924 6,437 6,340 6,307 6,232 1949-2008

246

Identification Of Rippability And Bedrock Depth Using Seismic Refraction  

SciTech Connect

Spatial variability of the bedrock with reference to the ground surface is vital for many applications in geotechnical engineering to decide the type of foundation of a structure. A study was done within the development area of Mutiara Damansara utilising the seismic refraction method using ABEM MK8 24 channel seismograph. The geological features of the subsurface were investigated and velocities, depth to the underlying layers were determined. The seismic velocities were correlated with rippability characteristics and borehole records. Seismic sections generally show a three layer case. The first layer with velocity 400-600 m/s predominantly consists of soil mix with gravel. The second layer with velocity 1600-2000 m/s is suggested to be saturated and weathered area. Both layers forms an overburden and generally rippable. The third layer represents granite bedrock with average depth and velocity 10-30 m and >3000 m/s respectively and it is non-rippable. Steep slope on the bedrock are probably the results of shear zones.

Ismail, Nur Azwin; Saad, Rosli; Nawawi, M. N. M; Muztaza, Nordiana Mohd; El Hidayah Ismail, Noer [Geophysics Section, School of Physics, 11800 Universiti Sains Malaysia, Pulau Pinang (Malaysia); Mohamad, Edy Tonizam [Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor (Malaysia)

2010-12-23T23:59:59.000Z

247

Verification of dosimetric accuracy on the TrueBeam STx: Rounded leaf effect of the high definition MLC  

Science Conference Proceedings (OSTI)

Purpose: The dosimetric leaf gap (DLG) in the Varian Eclipse treatment planning system is determined during commissioning and is used to model the effect of the rounded leaf-end of the multileaf collimator (MLC). This parameter attempts to model the physical difference between the radiation and light field and account for inherent leakage between leaf tips. With the increased use of single fraction high dose treatments requiring larger monitor units comes an enhanced concern in the accuracy of leakage calculations, as it accounts for much of the patient dose. This study serves to verify the dosimetric accuracy of the algorithm used to model the rounded leaf effect for the TrueBeam STx, and describes a methodology for determining best-practice parameter values, given the novel capabilities of the linear accelerator such as flattening filter free (FFF) treatments and a high definition MLC (HDMLC). Methods: During commissioning, the nominal MLC position was verified and the DLG parameter was determined using MLC-defined field sizes and moving gap tests, as is common in clinical testing. Treatment plans were created, and the DLG was optimized to achieve less than 1% difference between measured and calculated dose. The DLG value found was tested on treatment plans for all energies (6 MV, 10 MV, 15 MV, 6 MV FFF, 10 MV FFF) and modalities (3D conventional, IMRT, conformal arc, VMAT) available on the TrueBeam STx. Results: The DLG parameter found during the initial MLC testing did not match the leaf gap modeling parameter that provided the most accurate dose delivery in clinical treatment plans. Using the physical leaf gap size as the DLG for the HDMLC can lead to 5% differences in measured and calculated doses. Conclusions: Separate optimization of the DLG parameter using end-to-end tests must be performed to ensure dosimetric accuracy in the modeling of the rounded leaf ends for the Eclipse treatment planning system. The difference in leaf gap modeling versus physical leaf gap dimensions is more pronounced in the more recent versions of Eclipse for both the HDMLC and the Millennium MLC. Once properly commissioned and tested using a methodology based on treatment plan verification, Eclipse is able to accurately model radiation dose delivered for SBRT treatments using the TrueBeam STx.

Kielar, Kayla N.; Mok, Ed; Hsu, Annie; Wang Lei; Luxton, Gary [Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California 94305 (United States)

2012-10-15T23:59:59.000Z

248

Development of Vertically Integrated Circuits for ILC Vertex Detectors  

E-Print Network (OSTI)

We report on studies of vertically interconnected electronics (3D) performed by the Fermilab pixel group over the past two years. These studies include exploration of interconnect technology, backside thinning and laser annealing, the production of the first 3D chip for particle physics, the VIP, and plans for a commercial two-tier 3D fabrication run.

Ronald Lipton; for the Fermilab Pixel R&D Group

2009-01-29T23:59:59.000Z

249

Development of Vertically Integrated Circuits for ILC Vertex Detectors  

E-Print Network (OSTI)

We report on studies of vertically interconnected electronics (3D) performed by the Fermilab pixel group over the past two years. These studies include exploration of interconnect technology, backside thinning and laser annealing, the production of the first 3D chip for particle physics, the VIP, and plans for a commercial two-tier 3D fabrication run.

Lipton, Ronald

2009-01-01T23:59:59.000Z

250

Seeding Tests on Supercooled Stratus Using Vertical Fall Pyrotechnics  

Science Conference Proceedings (OSTI)

In Michigan in early 1977, an experiment was conducted to test the ability of silver iodide (AgI) ice nucleus curtains generated by vertical-fall pyrotechnics to produce clearings in supercooled stratus. A second objective of the experiment was ...

Joe L. Sutherland; John R. Thompson; Don A. Griffith; Bruce Kunkel

1982-02-01T23:59:59.000Z

251

Vertically Integrated Budgets of Mass and Energy for the Globe  

Science Conference Proceedings (OSTI)

Large-scale vertically integrated fluxes of mass and energy for the global atmosphere are calculated and displayed from FGGE III-b data. Until recently the global nature of these basic climatological terms could not be obtained because of lack of ...

G. J. Boer; Neil E. Sargent

1985-08-01T23:59:59.000Z

252

Analysis and correction of vertical dispersion in RHIC  

SciTech Connect

In the context of preserving the polarization of proton beams, the source of vertical dispersion in RHIC is analyzed. Contributions to dispersion from non-coupling sources and coupling sources are compared. Based on the analysis of sources for dispersion, the right actuator for correcting dispersion is determined and a corresponding algorithm is developed.

Liu, C.; Minty, M.

2011-09-14T23:59:59.000Z

253

Vertical Wind Shear Associated with Left-Moving Supercells  

Science Conference Proceedings (OSTI)

Vertical wind shear parameters are presented for 60 left-moving supercells across the United States, 53 of which produced severe hail (?1.9 cm). Hodographs corresponding to environments of left-moving supercells have a tendency to be more linear ...

Matthew J. Bunkers

2002-08-01T23:59:59.000Z

254

Cryogenic vertical test facility for the SRF cavities at BNL  

SciTech Connect

A vertical test facility has been constructed to test SRF cavities and can be utilized for other applications. The liquid helium volume for the large vertical dewar is approximate 2.1m tall by 1m diameter with a clearance inner diameter of 0.95m after the inner cold magnetic shield installed. For radiation enclosure, the test dewar is located inside a concrete block structure. The structure is above ground, accessible from the top, and equipped with a retractable concrete roof. A second radiation concrete facility, with ground level access via a labyrinth, is also available for testing smaller cavities in 2 smaller dewars. The cryogenic transfer lines installation between the large vertical test dewar and the cryo plant's sub components is currently near completion. Controls and instrumentations wiring are also nearing completion. The Vertical Test Facility will allow onsite testing of SRF cavities with a maximum overall envelope of 0.9 m diameter and 2.1 m height in the large dewar and smaller SRF cavities and assemblies with a maximum overall envelope of 0.66 m diameter and 1.6 m height.

Than, R.; Liaw, CJ; Porqueddu, R.; Grau, M.; Tuozzolo, J.; Tallerico, T.; McIntyre, G.; Lederle, D.; Ben-Zvi, I.; Burrill, A.; Pate, D.

2011-03-28T23:59:59.000Z

255

Diurnal Variation of Pressure-Heights: A Vertical Phase Shift  

Science Conference Proceedings (OSTI)

A vertical phase shift of the diurnal harmonic of geopotential height S1(Z) in the lower troposphere of low latitudes is shown by a comparison of diurnal harmonic of surface pressure at two surface stations that have an elevation difference close ...

Tsing-Chang Chen; Ming-Cheng Yen; Siegfried Schubert

2001-09-01T23:59:59.000Z

256

Scaling Hard Vertical Surfaces with Compliant Microspine Arrays  

Science Conference Proceedings (OSTI)

A new approach for climbing hard vertical surfaces has been developed that allows a robot to scale concrete, stucco, brick and masonry walls without using suction or adhesives.The approach is inspired by the mechanisms observed in some climbing insects ... Keywords: bio-inspired, climbing, legged locomation, spines

Alan T. Asbeck; Sangbae Kim; M. R. Cutkosky; William R. Provancher; Michele Lanzetta

2006-12-01T23:59:59.000Z

257

Optimal dynamic vertical ray shooting in rectilinear planar subdivisions  

Science Conference Proceedings (OSTI)

In this paper we consider the dynamic vertical ray shooting problem, that is the task of maintaining a dynamic set S of n non intersecting horizontal line segments in the plane subject to a query that reports the first segment in S ...

Yoav Giyora; Haim Kaplan

2007-01-01T23:59:59.000Z

258

On the Vertical Structure of Wind-Driven Sea Currents  

Science Conference Proceedings (OSTI)

The vertical structure of wind-driven sea surface currents and the role of wind-wave breaking in its formation are investigated by means of both field experiments and modeling. Analysis of drifter measurements of surface currents in the uppermost ...

Vladimir Kudryavtsev; Victor Shrira; Vladimir Dulov; Vladimir Malinovsky

2008-10-01T23:59:59.000Z

259

Vertical Heat-Flux Measurements from a Neutrally Buoyant Float  

Science Conference Proceedings (OSTI)

A neutrally buoyant float instrumented to measure 15 m shear and stratification was deployed for ten days in a near-inertial critical layer at the base of a warm-core ring. Vertical velocity and temperature data, from which large-scale (>5 m) ...

Haili Sun; Eric Kunze; A. J. Williams III

1996-06-01T23:59:59.000Z

260

The Free Kelvin Wave with Lateral and Vertical Viscosity  

Science Conference Proceedings (OSTI)

Free Kelvin wave solutions of the linear shallow-water equations are described, for an f-plane. Lateral and vertical viscous effects are represented by terms ?2u and du, respectively, where (u,v) is the (onshore, longshore) velocity. Both no-...

Michael K. Davey; William W. Hsieh; Roxana C. Wajsowicz

1983-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

A Lightweight NO2 Instrument for Vertical Height Profiles  

Science Conference Proceedings (OSTI)

A new lightweight NO2 instrument that can be flown from a tethered balloon to give vertical NO2 profiles is described. The detection principle is the chemiluminescent reaction between NO2 and a solution of luminol. The instrument is integrated ...

J. T. Pisano; J. W. Drummond; D. R. Hastie

1996-04-01T23:59:59.000Z

262

A Vertically Averaged Circulation Model Using Boundary-Fitted Coordinates  

Science Conference Proceedings (OSTI)

A two-dimensional vertically averaged circulation model using boundary-fitted coordinates has been developed for predicting sea level and currants in estuarine and shelf waters. The basic idea of the approach is to use a set of coupled quasi-...

Malcolm L. Spaulding

1984-05-01T23:59:59.000Z

263

Two phase pressure drop in inclined and vertical pipes  

E-Print Network (OSTI)

A method of calculating the pressure drop in inclined and vertical oil-gas wells is proposed. The data used to establish the method is from a variety of sources but is largely from air and water flowing in systems close ...

Griffith, P.

1973-01-01T23:59:59.000Z

264

True colours (Tye)  

E-Print Network (OSTI)

chardin1@twcny.rr.com Brian P. McLaughlin Rutgers University2005): 21542168. McLaughlin, Brian. Color, Consciousness,Hardin, and Brian P. McLaughlin ? Multiple Choice Pop Quiz (

Cohen, J; Hardin, C L; McLaughlin, B P

2006-01-01T23:59:59.000Z

265

A true virtual window  

E-Print Network (OSTI)

Previous research from environmental psychology shows that human well-being suffers in windowless environments in many ways and a window view of nature is psychologically and physiologically beneficial to humans. Current window substitutes, still images and video, lack three dimensional properties necessary for a realistic viewing experience ? primarily motion parallax. We present a new system using a head-coupled display and image-based rendering to simulate a photorealistic artificial window view of nature with motion parallax. Evaluation data obtained from human subjects suggest that the system prototype is a better window substitute than a static image and has significantly more positive effects on observers? moods. The test subjects judged the system prototype as a good simulation of, and acceptable replacement for, a real window, and accorded it much higher ratings for realism and preference than a static image.

Radikovic, Adrijan Silvester

2004-12-01T23:59:59.000Z

266

Electrical Resistivity Imaging for Unknown Bridge Foundation Depth Determination  

E-Print Network (OSTI)

Unknown bridge foundations pose a significant safety risk due to stream scour and erosion. Records from older structures may be non-existent, incomplete, or incorrect. Nondestructive and inexpensive geophysical methods have been identified as suitable to investigate unknown bridge foundations. The objective of the present study is to apply advanced 2D electrical resistivity imaging (ERI) in order to identify depth of unknown bridge foundations. A survey procedure is carried out in mixed terrain water and land environments with rough topography. A conventional resistivity survey procedure is used with the electrodes installed on the stream banks. However, some electrodes must be adapted for underwater use. Tests were conducted in one laboratory experimentation and at five field experimentations located at three roadway bridges, a geotechnical test site, and a railway bridge. The first experimentation was at the bridges with the smallest foundations, later working up in size to larger drilled shafts and spread footings. Both known to unknown foundations were investigated. The geotechnical test site is used as an experimental site for 2D and 3D ERI. The data acquisition is carried out along 2D profile with a linear array in the dipole-dipole configuration. The data collections have been carried out using electrodes deployed directly across smaller foundations. Electrodes are deployed in proximity to larger foundations to image them from the side. The 2D ERI can detect the presence of a bridge foundation but is unable to resolve its precise shape and depth. Increasing the spatial extent of the foundation permits better image of its shape and depth. Using electrode < 1 m to detect a slender foundation < 1 m in diameter is not feasible. The 2D ERI method that has been widely used for land surface surveys presently can be adapted effectively in water-covered environments. The method is the most appropriate geophysical method for determination of unknown bridge foundations. Fully 3D ERI method at bridge sites is labor intensive, time consuming, and does not add enough value over 2D ERI to make it worthwhile.

Arjwech, Rungroj

2011-12-01T23:59:59.000Z

267

Slug Test Characterization Results for Multi-Test/Depth Intervals Conducted During the Drilling of CERCLA Operable Unit OU ZP-1 Wells 299-W11-43, 299-W15-50, and 299-W18-16  

SciTech Connect

The following report presents test descriptions and analysis results for multiple, stress level slug tests that were performed at selected test/depth intervals within three Operable Unit (OU) ZP-1 wells: 299-W11-43 (C4694/Well H), 299-W15-50 (C4302/Well E), and 299-W18-16 (C4303/Well D). These wells are located within south-central region of the Hanford Site 200-West Area (Figure 1.1). The test intervals were characterized as the individual boreholes were advanced to their final drill depths. The primary objective of the hydrologic tests was to provide information pertaining to the areal variability and vertical distribution of hydraulic conductivity with depth at these locations within the OU ZP-1 area. This type of characterization information is important for predicting/simulating contaminant migration (i.e., numerical flow/transport modeling) and designing proper monitor well strategies for OU and Waste Management Area locations.

Spane, Frank A.; Newcomer, Darrell R.

2010-06-21T23:59:59.000Z

268

Shared Communications: Volume 2. In-Depth Systems Research  

Science Conference Proceedings (OSTI)

This report is the second of two documents that examine the literature for actual examples of organizations and agencies that share communications resources. While the primary emphasis is on rural, intelligent transportation system (ITS) communications involving transit, examples will not be limited to rural activities, nor to ITS implementation, nor even to transit. In addition, the term ''communication'' will be broadly applied to include all information resources. The first document of this series, ''Shared Communications: Volume I. A Summary and Literature Review'', defines the meaning of the term ''shared communication resources'' and provides many examples of agencies that share resources. This document, ''Shared Communications: Volume II. In-Depth Systems Research'', reviews attributes that contributed to successful applications of the sharing communication resources concept. A few examples of each type of communication sharing are provided. Based on the issues and best practice realworld examples, recommendations for potential usage and recommended approaches for field operational tests are provided.

Truett, LF

2004-09-22T23:59:59.000Z

269

Measurement of Vertical Kinetic Energy and Vertical Velocity Skewness in Oceanic Boundary Layers by Imperfectly Lagrangian Floats  

Science Conference Proceedings (OSTI)

The effects of upward buoyancy on the accuracy with which Lagrangian floats can measure the Eulerian mean variance wwE and skewness SwE of vertical fluid velocity w in the wind-driven upper-ocean boundary layer is investigated using both ...

Ramsey R. Harcourt; Eric A. DAsaro

2010-11-01T23:59:59.000Z

270

Vertical Differencing of the Primitive Equations Based on the CharneyPhillips Grid in Hybrid &sigmap Vertical Coordinates  

Science Conference Proceedings (OSTI)

Two types of vertical grids are used for atmospheric models: the Lorenz grid (L grid) and the CharneyPhillips grid (CP grid). Although the CP grid is the standard grid for quasigenstrophic models, it is not widely used in the primitive equation ...

Akio Arakawa; Celal S. Konor

1996-03-01T23:59:59.000Z

271

Performance of a well with lateral and vertical wellbores  

E-Print Network (OSTI)

This thesis presents three major topics: analysis of pressure transient behavior of horizontal wells, analysis of pressure transient behavior of slanted wells, and performance analysis of wells with lateral and vertical wellbores. Additional analysis of actual well test data is also provided. For horizontal wells, we focus on analysis pressure solution for pseudoradial flow. Limited entry slanted wells are considered in this work by comparing wells with different angles and evaluating the performance. Modeling and performance analysis of a well with lateral and vertical wellbores is the last topic. The specific tasks achieved in this work include the following: We have compared four methods for analyzing pseudoradial flow found in the literature (Odeh and Babu, Joshi, Kuchuk et al., and Lichtenberger) and verified their methods using reservoir simulation. We found that the methods by Kuchuk et al. and Joshi are the most accurate while the method by Lichtenberger has the biggest error. We have modeled and examined the performance of slanted wells with different angles. The well length is equal to formation thickness and is kept constant. It has proven that the performance of slanted wells is proportional to the increase of the well angles only up to 60. Further increasing the well angle will not make the well performance better than a vertical well. We have modeled and analyzed performance of combination wells. We compared the performance of vertical, slanted, and combination wells. Based on that comparison, the combination well has the best performance compared to other well geometries. By having a lateral section beside the vertical section, the performance of the well changes significantly. We have performed an analysis of actual injectivity test data from a well with lateral and vertical wellbores. The proper analysis obtained by correcting the pressure changes confirmed that the semilog straight line shows infinite acting radial flow. The permeability is 62.3 md, obtained by taking a correct slope of 260 psi/cycle. As of now, the radius of investigation is 8287 ft. It needs 7.9 years of injection to reach 850 psig of wellhead pressure.

Abdat, Toriq

2002-01-01T23:59:59.000Z

272

Interpolation Scheme for Standard Depth Data Applicable for Areas with a Complex Hydrographical Structure  

Science Conference Proceedings (OSTI)

Oceanographic datasets, which are arranged for standard depths, have many applications for various users. However, oceanic observations are not always conducted exactly at standard depths, especially in the case of historical bottle observations. ...

Sachiko Oguma; Toru Suzuki; Yutaka Nagata; Hidetoshi Watanabe; Hatsuyo Yamaguchi; Kimio Hanawa

2004-04-01T23:59:59.000Z

273

Nonlinear Energy Transfer through the Spectrum of Gravity Waves for the Finite Depth Case  

Science Conference Proceedings (OSTI)

An algorithm for calculation of the nonlinear kinetic integral is described for the case of finite depth. The use of an effective approximation of the exact dispersion relationship for gravity waves in finite depth permits modification of the ...

V. G. Polnikov

1997-08-01T23:59:59.000Z

274

A Finite-Depth Wind-Wave Model. Part I: Model Description  

Science Conference Proceedings (OSTI)

A parametric windsea model for arbitrary water depths is presented. The model is derived from a conservation of energy flux formulation and includes shoaling, refraction, dissipation by bottom friction, as well as finite-depth modifications of ...

Hans C. Graber; Ole S. Madsen

1988-11-01T23:59:59.000Z

275

Photon-limited time of flight depth acquisition : new parametric model and its analysis  

E-Print Network (OSTI)

As 3-D imaging systems become more popular, the depth estimation which is their core component should be made as accurate as possible at low power levels. In this thesis, we consider the time of flight depth acquisition ...

Montazerhodjat, Vahid

2013-01-01T23:59:59.000Z

276

Interannual Consistency in Fractal Snow Depth Patterns at Two Colorado Mountain Sites  

Science Conference Proceedings (OSTI)

Fractal dimensions derived from loglog variograms are useful for characterizing spatial structure and scaling behavior in snow depth distributions. This study examines the temporal consistency of snow depth scaling features at two sites using ...

Jeffrey S. Deems; Steven R. Fassnacht; Kelly J. Elder

2008-10-01T23:59:59.000Z

277

Influence of Linear Depth Variation on Poincar, Kelvin, and Rossby Waves  

Science Conference Proceedings (OSTI)

Exact solutions to the linearized shallow-water equations in a channel with linear depth variation and a mean flow are obtained in terms of confluent hypergeometric functions. These solutions are the generalization to finite s (depth variation ...

A. N. Staniforth; R. T. Williams; B. Neta

1993-04-01T23:59:59.000Z

278

Seasonal variations of aerosol optical properties, vertical distribution and associated radiative effects in the Yangtze Delta Region of China  

Science Conference Proceedings (OSTI)

Four years of columnar aerosol particle optical properties (2006 to 2009) and one year database worth of aerosol particle vertical profile of 527 nm extinction coefficient (June 2008 to May 2009) are analyzed at Taihu in the central Yangtze Delta region in eastern China. Seasonal variations of aerosol optical properties, vertical distribution, and influence on shortwave radiation and heating rates were investigated. Multiyear variations of aerosol optical depths (AOD), Angstrom exponents, single scattering albedo (SSA) and asymmetry factor (ASY) are analyzed, together with the vertical profile of aerosol extinction. AOD is largest in summer and smallest in winter. SSAs exhibit weak seasonal variation with the smallest values occurring during winter and the largest during summer. The vast majority of aerosol particles are below 2 km, and about 62%, 67%, 67% and 83% are confined to below 1 km in spring, summer, autumn and winter, respectively. Five-day back trajectory analyses show that the some aerosols aloft are traced back to northern/northwestern China, as far as Mongolia and Siberia, in spring, autumn and winter. The presence of dust aerosols were identified based on the linear depolarization measurements together with other information (i.e., back trajectory, precipitation, aerosol index). Dust strongly impacts the vertical particle distribution in spring and autumn, with much smaller effects in winter. The annual mean aerosol direct shortwave radiative forcing (efficiency) at the bottom, top and within the atmosphere are -34.8 {+-} 9.1 (-54.4 {+-} 5.3), -8.2 {+-} 4.8 (-13.1 {+-} 1.5) and 26.7 {+-} 9.4 (41.3 {+-} 4.6) W/m{sup 2} (Wm{sup -2} T{sup -1}), respectively. The mean reduction in direct and diffuse radiation reaching surface amount to 109.2 {+-} 49.4 and 66.8 {+-} 33.3 W/m{sup 2}, respectively. Aerosols significantly alter the vertical profile of solar heating, with great implications for atmospheric stability and dynamics within the lower troposphere.

Liu, Jianjun; Zheng, Youfei; Li, Zhanqing; Flynn, Connor J.; Cribb, Maureen

2012-02-09T23:59:59.000Z

279

MHK Technologies/Vertical Axis Venturi System | Open Energy Information  

Open Energy Info (EERE)

Axis Venturi System Axis Venturi System < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage 275px Technology Profile Primary Organization Warrior Girl Corporation Technology Resource Click here Current Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The proprietary venturi system uses two venturies one on the upstream side of the vertical axis turbine to force the water flow into the turbine and one at the downstream side of the turbine which creates a lower pressure region that pulls the water through the turbine The vertical axis orientation of the turbine is believed by the company to allow for efficiency gains

280

The Effect of Vertical Upward Flow on Thermal Plumes  

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

The Effect of Vertical Upward Flow on Thermal Plumes The Effect of Vertical Upward Flow on Thermal Plumes Speaker(s): Pierre S. Farrugia Date: November 18, 2010 - 12:05pm Location: 90-3122 Seminar Host/Point of Contact: David Lorenzetti Thermal plumes have been widely investigated in a variety of scenarios, including natural convection and stratified environments. The resulting theory may be used to predict ventilation flow rates in, for example, natural and displacement ventilation, and under-floor air distribution (UFAD) systems. However, there has been little effort in investigating how uniform upward flows affect the plume velocity, rate of growth, and thermal profile. Such situations can arise if, for example, the diffusers of a UFAD system are evenly distributed. In order to study such situations, analytical expressions for the velocity and temperature profiles of a plume

Note: This page contains sample records for the topic "true vertical depth" 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

Vertical Seismic Profiling (Majer, 2003) | Open Energy Information  

Open Energy Info (EERE)

(Majer, 2003) (Majer, 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Vertical Seismic Profiling (Majer, 2003) Exploration Activity Details Location Unspecified Exploration Technique Vertical Seismic Profiling Activity Date Usefulness not indicated DOE-funding Unknown Notes The goal of this work is to evaluate the most promising methods and approaches that may be used for improved geothermal exploration and reservoir assessment. It is not a comprehensive review of all seismic methods used to date in geothermal environments. This work was motivated by a need to assess current and developing seismic technology that if applied in geothermal cases may greatly improve the chances for locating new geothermal resources and/or improve assessment of current ones.

282

Contrast between the vertical and horizontal mercury discharge lamps  

SciTech Connect

This paper discusses the thermal behavior of a high pressure mercury lamp in a horizontal position, compared with that of a vertical lamp. The model adopted is three-dimensional, steady, and powered DC. After the model validation, we analyzed temperature fields and velocities for the case of the lamp in a horizontal position by comparing it with those of a lamp in vertical position. This setting initially fixed the wall temperature equal to 1000 K. However, the morphology of the temperature profile in the case of the horizontal lamp indicates that the temperature of the wall cannot be uniform. Thus, we have, in a second time, performed an energy balance at the wall to calculate its temperature. This aims to understand the influence of convection on the thermal properties of the source.

Ben Hamida, M. B.; Helali, H.; Araoud, Z.; Charrada, K. [Unite d'Etude des Milieux Ionises et Reactifs, IPEIM, 5019 route de Kairouan Monastir (Tunisia)

2011-06-15T23:59:59.000Z

283

4D frequency analysis of computational cameras for depth of field extension  

Science Conference Proceedings (OSTI)

Depth of field (DOF), the range of scene depths that appear sharp in a photograph, poses a fundamental tradeoff in photography---wide apertures are important to reduce imaging noise, but they also increase defocus blur. Recent advances in computational ... Keywords: Fourier analysis, computational camera, depth of field, light field

Anat Levin; Samuel W. Hasinoff; Paul Green; Frdo Durand; William T. Freeman

2009-07-01T23:59:59.000Z

284

A 2D nearest-neighbor quantum architecture for factoring in polylogarithmic depth  

Science Conference Proceedings (OSTI)

We contribute a 2D nearest-neighbor quantum architecture for Shor's algorithm to factor an n-bit number in O(log3 n) depth. Our implementation uses parallel phase estimation, constant-depth fanout and teleportation, and constant-depth ... Keywords: Shor's algorithm, carry-save addition, nearest-neighbor, prime factorization, quantum architecture

Paul Pham, Krysta M. Svore

2013-11-01T23:59:59.000Z

285

Multirate depth control of an AUV by neurocontroller for enhanced situational awareness  

Science Conference Proceedings (OSTI)

This paper focuses on a critical component of the situational awareness (SA), the neural control of depth flight of an autonomous underwater vehicle (AUV). Constant depth flight is a challenging but important task for AUVs to achieve high level of autonomy ... Keywords: autonomous underwater vehicle, depth flight, multirate system, neurocontroller, simulation, situational awareness

Igor Astrov; Andrus Pedai

2010-12-01T23:59:59.000Z

286

True Recurrence Versus New Primary: An Analysis of Ipsilateral Breast Tumor Recurrences After Breast-Conserving Therapy  

Science Conference Proceedings (OSTI)

Purpose: Ipsilateral breast tumor recurrence (IBTR) can occur in 5-20% of women with early-stage breast cancer treated with breast-conserving therapy. Two entities of IBTR have been described: true recurrence (TR), suggested to be regrowth of disease at the tumor bed, and new primary (NP), distinct from the index lesion in histology and location. This study compared survival outcomes between two patient cohorts classified clinically as having either TR or NP. Methods and Materials: Between 1989 and 1999, 6,020 women were referred to the BC Cancer Agency with newly diagnosed pT1-2, N0-1, M0 invasive breast cancer, treated with breast-conserving surgery. Of these, 289 patients had pathologically confirmed IBTR. Retrospective analysis was performed, and a set of decision rules was applied to classify cases as TR or NP based on change in histology, grade, hormone receptor status, and tumor location. Of 289 patients, 129 (45%) were classified as having TR and 139 (48%) as having NP; 21 (7%) were unclassified. Results: The distributions of age at diagnosis, age at recurrence, and histopathologic factors were similar in the TR and NP cohorts (all p > 0.05). The mean time to recurrence was shorter in TR patients than in NP patients (4.8 years vs. 6.3 years, p = 0.001). Treatment of the IBTR did not differ between the two groups. In the TR and NP cohorts, breast cancer-specific survival was 55.7% vs. 61.3% (p = 0.93), and overall survival was 43.7% vs. 54.8% (p = 0.53). Conclusions: Time to recurrence is significantly shorter in patients with IBTR classified as true recurrence compared to new primary. Non-statistically significant trends for less favorable survival were observed for patients with TR. Further investigation of the hypothesis that TR and NP tumors are distinct entities with different survival prognoses will require standardized pathology review and molecular analyses.

Panet-Raymond, Valerie [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); Population Outcomes Unit, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); Truong, Pauline T., E-mail: ptruong@bccancer.bc.ca [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); Population Outcomes Unit, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); University of British Columbia, BC (Canada); McDonald, Rachel E.; Alexander, Cheryl [Population Outcomes Unit, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); Ross, Louetta [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); Ryhorchuk, Aleata [Population Outcomes Unit, British Columbia Cancer Agency, Vancouver Island Centre, BC (Canada); Tumor Tissue Repository, Deeley Research Centre and Vancouver Island Centre, British Columbia Cancer Agency, BC (Canada); Watson, Peter H. [Tumor Tissue Repository, Deeley Research Centre and Vancouver Island Centre, British Columbia Cancer Agency, BC (Canada); University of British Columbia, BC (Canada)

2011-10-01T23:59:59.000Z

287

Electrically injected visible vertical cavity surface emitting laser diodes  

DOE Patents (OSTI)

Visible laser light output from an electrically injected vertical cavity surface emitting laser (VSCEL) diode is enabled by the addition of phase-matching spacer layers on either side of the active region to form the optical cavity. The spacer layers comprise InAlP which act as charge carrier confinement means. Distributed Bragg reflector layers are formed on either side of the optical cavity to act as mirrors. 5 figs.

Schneider, R.P.; Lott, J.A.

1994-09-27T23:59:59.000Z

288

Vertical feed stick wood fuel burning furnace system  

DOE Patents (OSTI)

A new and improved stove or furnace for efficient combustion of wood fuel including a vertical feed combustion chamber for receiving and supporting wood fuel in a vertical attitude or stack, a major upper portion of the combustion chamber column comprising a water jacket for coupling to a source of water or heat transfer fluid and for convection circulation of the fluid for confining the locus of wood fuel combustion to the bottom of the vertical gravity feed combustion chamber. A flue gas propagation delay channel extending from the laterally directed draft outlet affords delayed travel time in a high temperature environment to assure substantially complete combustion of the gaseous products of wood burning with forced air as an actively induced draft draws the fuel gas and air mixture laterally through the combustion and high temperature zone. Active sources of forced air and induced draft are included, multiple use and circuit couplings for the recovered heat, and construction features in the refractory material substructure and metal component superstructure.

Hill, Richard C. (Orono, ME)

1984-01-01T23:59:59.000Z

289

Low profile, high load vertical rolling positioning stage  

DOE Patents (OSTI)

A stage or support platform assembly for use in a synchrotron accurately positions equipment to be used in the beam line of the synchrotron. The support platform assembly includes an outer housing in which is disposed a lifting mechanism having a lifting platform or stage at its upper extremity on which the equipment is mounted. A worm gear assembly is located in the housing and is adapted to raise and lower a lifting shaft that is fixed to the lifting platform by an anti-binding connection. The lifting platform is moved vertically as the lifting shaft is moved vertically. The anti-binding connection prevents the shaft from rotating with respect to the platform, but does permit slight canting of the shaft with respect to the lifting platform so as to eliminate binding and wear due to possible tolerance mismatches. In order to ensure that the lifting mechanism does not move in a horizontal direction as it is moved vertically, at least three linear roller bearing assemblies are arranged around the outer-periphery of the lifting mechanism. One of the linear roller bearing assemblies can be adjusted so that the roller bearings apply a loading force against the lifting mechanism. Alternatively, a cam mechanism can be used to provide such a loading force.

Shu, Deming (Darien, IL); Barraza, Juan (Aurora, IL)

1996-01-01T23:59:59.000Z

290

DEVELOPMENT OF TECHNOLOGY TO REMOTELY NAVIGATE VERTICAL PIPE ARRAYS  

Science Conference Proceedings (OSTI)

Situations exist around the Savannah River Site (SRS) and the Department of Energy (DOE) complex where it is advantageous to remotely navigate vertical pipe arrays. Specific examples are waste tanks in the SRS Tank Farms, which contain horizontal cooling coils at the tank bottom, vertical cooling coils throughout and a limited number of access points or ''risers''. These factors limit accessibility to many parts of these tanks by conventional means. Pipe Traveler technology has been developed to address these issues. The Pipe Traveler addresses these issues by using the vertical cooling coils as its medium of travel. The unit operates by grabbing a pipe using dual grippers located on either side of the equipment. Once securely attached to the pipe a drive wheel is extended to come in contact with the pipe. Rotation of the drive wheel causes the unit to rotate around the pipe. This action is continued until the second set of grippers is aligned with the next pipe. Extension pistons are actuated to extend the second set of grippers in contact with a second pipe. The second set of grippers is then actuated to grasp the pipe. The first set of grippers releases the original pipe and the process is repeated until the unit reaches its desired location. Once at the tool deployment location the desired tool may be used. The current design has proven the concept of pipe-to-pipe navigation. Testing of the Pipe Traveler has proven its ability to transfer itself from one pipe to another.

Krementz, D.; Immel, D.; Vrettos, N.; Nance, T.; Marzolf, A.

2011-07-01T23:59:59.000Z

291

Vertical Mixing and Transports through a Stratified Shear Layer  

Science Conference Proceedings (OSTI)

A stratified shear layer was generated in the laboratory by driving a turbulent mixed layer of depth D over a quiescent, deep dense layer. As a result, a density interface of thickness ?b across which the buoyancy jump is ?b was formed between ...

E. J. Strang; H. J. S. Fernando

2001-08-01T23:59:59.000Z

292

Modelling the vertical heat exchanger in thermal basin  

Science Conference Proceedings (OSTI)

In geographical area characterize by specific geological conformations such as the Viterbo area which comprehend active volcanic basins, it is difficult to use conventional geothermal plants. In fact the area presents at shallow depths thermal falde ... Keywords: heat, thermal aquifer, thermal energy

Maurizio Carlini; Sonia Castellucci

2007-06-01T23:59:59.000Z

293

Chemical stratification in the atmosphere of Ap star HD 133792. Regularized solution of the vertical inversion problem  

E-Print Network (OSTI)

High spectral resolution studies of cool Ap stars reveal conspicuous anomalies of the shape and strength of many absorption lines. This is a signature of large atmospheric chemical gradients produced by the selective radiative levitation and gravitational settling of chemical species. Here we present a new approach to mapping the vertical chemical structures in stellar atmospheres. We have developed a regularized chemical inversion procedure that uses all information available in high-resolution stellar spectra. The new technique for the first time allowed us to recover chemical profiles without making a priori assumptions about the shape of chemical distributions. We have derived average abundances and applied the vertical inversion procedure to the high-resolution VLT UVES spectra of the weakly magnetic, cool Ap star HD 133792. Our analysis yielded improved estimates of the atmospheric parameters of HD 133792. We show that this star has negligible vsini and the mean magnetic field modulus =1.1+/-0.1 kG. We have derived average abundances for 43 ions and obtained vertical distributions of Ca, Si, Mg, Fe, Cr, and Sr. All these elements except Mg show high overabundance in the deep layers and solar or sub-solar composition in the upper atmosphere of HD 133792. In contrast, the Mg abundance increases with height. We find that transition from the metal-enhanced to metal-depleted zones typically occurs in a rather narrow range of depths in the atmosphere of HD 133792. Based on the derived photospheric abundances, we conclude that HD 133792 belongs to the rare group of evolved cool Ap stars, which possesses very large Fe-peak enhancement, but lacks a prominent overabundance of the rare-earth elements.

O. Kochukhov; V. Tsymbal; T. Ryabchikova; V. Makaganyk; S. Bagnulo

2006-09-12T23:59:59.000Z

294

Summary of the environmental monitoring at the Rock Springs, Wyoming Site No. 9, true in situ oil shale retorting experiment  

SciTech Connect

The environmental effects and needed control technology associated with the potential in-situ retorting of oil shale in the Green River Basin (near Rock Springs, Wyoming) has been studied for over four years. This environmental monitoring program has included previous and existing in-situ oil-shale retorting field experiments and baseline data collection for potential future retorting experiments. The most extensive environmetal monitoring effort is at Rock Springs Site No. 9, a true in-situ oil-shale retorting field experiment which was ignited April 5, 1976. The purpose of this monitoring program was to identify any significant changes in the hydrology, air quality, and soils. Data have been collected during the pre-operational (baseline) and operational phases and continues to be collected during the post-operational phase. This report presents the results of the environmental monitoring conducted in support of the LETC Rock Springs No. 9 field experiment and the entire DOE oil shale program. 18 figures, 8 tables.

Virgona, J.E.; Poulson, R.E.; Spedding, T.J.

1979-06-01T23:59:59.000Z

295

Probabilities for the emission of light particles and their energy and angular distributions for true quaternary nuclear fission  

SciTech Connect

On the basis of quantum-mechanical fission theory, the features of true quaternary nuclear fission are studied by treating this fission process as a sequence of three processes following one another in the course of time. The first two processes are the escape of the first and then the second of the two light particles emitted from the neck of a fissioning nucleus because of a nonadiabatic character of the collective deformation motion of this nucleus. Finally, the third process is the separation of the fissioning nucleus into two rather heavy fission fragments. The differences that arise in the emission probabilities and in the angular and energy distributions upon going over from the first emitted to the second emitted prescission third and fourth particles are analyzed by invoking experimental data on the spontaneous and thermalneutron-induced fission of nuclei, and it is shown that these differences are caused by the changes both in the geometric configuration of the fissioning nucleus and in the shell structure of its neck after the first prescission particle is emitted from it.

Kadmensky, S. G., E-mail: kadmensky@phys.vsu.ru; Titova, L. V. [Voronezh State University (Russian Federation)] [Voronezh State University (Russian Federation)

2013-01-15T23:59:59.000Z

296

Calculation of the Effect of Random Superfluid Density on the Temperature Dependence of the Penetration Depth  

SciTech Connect

Microscopic variations in composition or structure can lead to nanoscale inhomogeneity in superconducting properties such as the magnetic penetration depth, but measurements of these properties are usually made on longer length scales. We solve a generalized London equation with a non-uniform penetration depth {lambda}(r), obtaining an approximate solution for the disorder-averaged Meissner screening. We find that the effective penetration depth is different from the average penetration depth and is sensitive to the details of the disorder. These results indicate the need for caution when interpreting measurements of the penetration depth and its temperature dependence in systems which may be inhomogeneous.

Lippman, Thomas; Moler, Kathryn A.

2012-07-20T23:59:59.000Z

297

Scattering of Sound by Internal Wave Currents: The Relation to Vertical Momentum Flux  

Science Conference Proceedings (OSTI)

Internal waves scatter sound by two related perturbations: 1) those associated with vertical particle displacements ?(x, y, z, t) in the presence of a vertical gradient of (potential) sound speed (?c = ??zcp); and 2) those associated with ...

W. Munk; P. Worcester; F. Zachariasen

1981-04-01T23:59:59.000Z

298

A Comparison of Vertical Velocity in Cirrus Obtained from Aircraft and Lidar Divergence Measurements during FIRE  

Science Conference Proceedings (OSTI)

Techniques are presented to obtain vertical velocity in cirrus clouds from in situ aircraft lateral wind measurements and from ground-based remote Doppler lidar measurements. In general, direct measurements of absolute vertical velocity w from ...

I. Gultepe; A. J. Heymsfield; D. H. Lenschow

1990-02-01T23:59:59.000Z

299

An Investigation of an Arctic Front with a Vertically Nested Mesoscale Model  

Science Conference Proceedings (OSTI)

A vertically mesoscale regional numerical weather prediction model is used to simulate an arctic front. The front was observed during the Arctic Cyclone Expedition of 1984. The regional model employs a unique vertical nesting scheme in which the ...

William T. Thompson; Stephen D. Burk

1991-02-01T23:59:59.000Z

300

The Mean Meridional Circulation of the Atmosphere Using the Mass above Isentropes as the Vertical Coordinate  

Science Conference Proceedings (OSTI)

The mean meridional circulation of the atmosphere is presented using the mass (more specifically, the pressure corresponding to the mass) above the isentrope of interest as the vertical coordinate. In this vertical coordinate, the mass-weighted ...

Gang Chen

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

The Dependence of Numerically Simulated Convective Storms on Vertical Wind Shear and Buoyancy  

Science Conference Proceedings (OSTI)

The effects of vertical wind shear and buoyancy on convective storm structure and evolution are investigated with the use of a three-dimensional numerical cloud model. By varying the magnitude of buoyant energy and one-directional vertical shear ...

M. L. Weisman; J. B. Klemp

1982-06-01T23:59:59.000Z

302

Computation of Vertical Profiles of Longwave Radiative Cooling over the Equatorial Pacific  

Science Conference Proceedings (OSTI)

An important quantity whose magnitude has not been thoroughly examined is the vertical distribution of heating in the Tropics. The details of the vertical distribution of heating have a significant impact on a number of phenomena, including the ...

Perry G. Ramsey; Dayton G. Vincent

1995-05-01T23:59:59.000Z

303

Effects of Small-Scale Vertical Motion on Radar Measurements of Wind and Temperature Profiles  

Science Conference Proceedings (OSTI)

Vertical velocities were observed during the month of June 1990 with two side-by-side wind profilers at Platteville, Colorado. Many of the observations reveal strong wave motion, probably mountain lee waves, that sometimes caused vertical ...

B. L. Weber; D. B. Wuertz; D. C. Law; A. S. Frisch; J. M. Brown

1992-06-01T23:59:59.000Z

304

The Vertical Resolution of the Kennedy Space Center 50-MHz Wind Profiler  

Science Conference Proceedings (OSTI)

The effective vertical resolution of the Kennedy Space Center 50-MHz Doppler radar wind profiler is determined using vertical wavenumber spectra and temporal coherence. The resolution ranges from being Nyquist limited at 300 m to as coarse as 900 ...

Francis J. Merceret

1999-09-01T23:59:59.000Z

305

A Theoretical Method for Computing Vertical Distributions of Acidity and Sulfate Production within Cumulus Clouds  

Science Conference Proceedings (OSTI)

An aqueous chemistry model has been combined with an entraining cumulus cloud model to predict vertical distributions of pH (=?log10[H+]) within a cloud. The cloud model predicts vertical variations of temperature, pressure, entrainment and ...

Chris J. Walcek; Gregory R. Taylor

1986-02-01T23:59:59.000Z

306

Determining Turbulent Vertical Velocity, and Fluxes of Heat and Salt with an Autonomous Underwater Vehicle  

Science Conference Proceedings (OSTI)

The authors show that vertical turbulent fluxes in the upper ocean can be measured directly with an autonomous underwater vehicle (AUV). A horizontal profile of vertical water velocity is obtained by applying a Kalman smoother to AUV motion data. ...

Daniel R. Hayes; James H. Morison

2002-05-01T23:59:59.000Z

307

A Vertical Finite-Difference Scheme Based on a Hybrid ?-?-p Coordinate  

Science Conference Proceedings (OSTI)

A vertical discretization of the primitive equations in a general vertical coordinate is described that enables a primitive equation model to use terrain-following sigma levels near the ground and isentropic levels higher up, with a smooth ...

Zhengxin Zhu; John Thuburn; Brian J. Hoskins; Peter H. Haynes

1992-05-01T23:59:59.000Z

308

The Role of Shearwise and Transverse Quasigeostrophic Vertical Motions in the Midlatitude Cyclone Life Cycle  

Science Conference Proceedings (OSTI)

The total quasigeostrophic (QG) vertical motion field is partitioned into transverse and shearwise couplets oriented parallel to, and along, the geostrophic vertical shear, respectively. The physical role played by each of these components of ...

Jonathan E. Martin

2006-04-01T23:59:59.000Z

309

Equatorial Inertial Instability: Effects of Vertical Finite Differencing and Radiative Transfer  

Science Conference Proceedings (OSTI)

The effect of vertical differencing on equatorial inertial instability is studied and explicit results obtained for growth rates as a function of the vertical resolution. It is found that for a basic state independent of height, the form of the ...

P. D. Clark; P. H. Haynes

1994-07-01T23:59:59.000Z

310

Bifurcation and Stability of Low-Order Steady Flows in Horizontally and Vertically Forced Convection  

Science Conference Proceedings (OSTI)

The response of a convecting fluid to externally imposed horizontal and vertical temperature gradients is fundamentally different from that obtained when only vertical forcing is present. Using a three-component spectral model of two-dimensional ...

David A. Yost; Hampton N. Shirer

1982-01-01T23:59:59.000Z

311

Vertical Structure of Tropical Cyclones with Concentric Eyewalls as Seen by the TRMM Precipitation Radar  

Science Conference Proceedings (OSTI)

Ten years of data from the Tropical Rainfall Measurement Mission satellites Precipitation Radar are analyzed to determine the typical vertical structure of the concentric eyewalls of tropical cyclones undergoing eyewall replacement. The vertical ...

Deanna A. Hence; Robert A. Houze Jr.

2012-03-01T23:59:59.000Z

312

Vertical Diffusion in the Lower Atmosphere Using Aircraft Measurements of 222Rn  

Science Conference Proceedings (OSTI)

Vertical profiles of 222Rn concentrations measured from 3 to 6 September 1995 in the northeastern United States, using a new radon instrument designed for aircraft measurements, are presented. A vertical diffusion model was employed to simulate ...

H. N. Lee; R. J. Larsen

1997-09-01T23:59:59.000Z

313

Kinematic Vertical Motion and Relative Vorticity Profiles in a Long-Lived Midlatitude Convective System  

Science Conference Proceedings (OSTI)

Average kinematic vertical motion and relative vorticity profiles are presented for a long-lived midlatitude convective complex. A breakdown into active convective and stratiform precipitation regions shows very good agreement in the vertical ...

Lance F. Bosart

1986-06-01T23:59:59.000Z

314

The Design of Smooth, Conservative Vertical Grids for Interactive Grid Nesting with Stretching  

Science Conference Proceedings (OSTI)

This note describes how to generate vertically stretched grids within the context of vertical nesting that are consistent with the conservative interpolation formula used by Clark and Farley. It is shown that all nested grids derive their ...

Terry L. Clark; William D. Hall

1996-06-01T23:59:59.000Z

315

Wind Profiler Observations of Vertical Motion and Precipitation Microphysics of a Tropical Squall Line  

Science Conference Proceedings (OSTI)

Data from a wind profiler located at Darwin, Australia, have been used to examine the vertical motions and precipitation microphysics in a well-developed squall line. Both a mature and developing convective cell are well sampled. The vertical ...

Peter T. May; Deepak K. Rajopadhyaya

1996-04-01T23:59:59.000Z

316

Vertical Wind Variability Observed by VHF Radar in the Lee of the Colorado Rockies  

Science Conference Proceedings (OSTI)

During March 1981 the Sunset and Platteville VHF clear-air radars located in Colorado to the east of the continental divide observed vertical winds continuously over a three-week period. The vertical winds at these locations contain fluctuations ...

W. L. Ecklund; K. S. Gage; B. B. Balsley; R. G. Strauch; J. L. Green

1982-10-01T23:59:59.000Z

317

The Deep-Atmosphere Euler Equations in a Generalized Vertical Coordinate  

Science Conference Proceedings (OSTI)

Previous analysis of the hydrostatic primitive equations using a generalized vertical coordinate is extended to the deep-atmosphere nonhydrostatic Euler equations, and some special vertical coordinates of interest are noted. Energy and axial ...

Andrew Staniforth; Nigel Wood

2003-08-01T23:59:59.000Z

318

Spatiotemporal Variation of the Vertical Gradient of Rainfall Rate Observed by the TRMM Precipitation Radar  

Science Conference Proceedings (OSTI)

Seasonal and spatial variation of the vertical gradient of rainfall rate was investigated using global precipitation data observed by the Precipitation Radar (PR) on the Tropical Rainfall Measuring Mission (TRMM) satellite. The vertical gradient ...

Masafumi Hirose; Kenji Nakamura

2004-09-01T23:59:59.000Z

319

The Diagnosis of Synoptic-Scale Vertical Motion in an Operational Environment  

Science Conference Proceedings (OSTI)

The physical reason for quasi-geostrophic vertical motion is reviewed. Various techniques for estimating synoptic-scale vertical motion are examined, and their utility (or lack thereof) is illustrated by a case study. The Q-vector approach ...

Dale R. Durran; Leonard W. Snellman

1987-03-01T23:59:59.000Z

320

The Vertical Structure of Temperature in the Tropics: Different Flavors of El Nio  

Science Conference Proceedings (OSTI)

To explore the vertical coherence of the vertical temperature structure in the atmosphere, an analysis is performed of the full three-dimensional spatial structure of the temperature field monthly mean anomalies from the 40-yr ECMWF Re-Analysis (...

Kevin E. Trenberth; Lesley Smith

2006-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

A Vertically Nested Regional Numerical Weather Prediction Model with Second-Order Closure Physics  

Science Conference Proceedings (OSTI)

The model we describe involves a unique strategy in which a high vertical resolution grid is nested within the coarse vertical resolution grid of a regional numerical weather prediction (NWP) model. Physics computations performed on the high ...

Stephen D. Burk; William T. Thompson

1989-11-01T23:59:59.000Z

322

Lidar Observations of the Vertical Aerosol Flux in the Planetary Boundary Layer  

Science Conference Proceedings (OSTI)

The vertical aerosol transport in the planetary boundary layer (PBL) is investigated with lidars. Profiles of the vertical wind velocity are measured with a 2-?m Doppler wind lidar. Aerosol parameters are derived from observations with an aerosol ...

Ronny Engelmann; Ulla Wandinger; Albert Ansmann; Detlef Mller; Egidijus eromskis; Dietrich Althausen; Birgit Wehner

2008-08-01T23:59:59.000Z

323

H(t,n)/sup 3/He reaction for depth profiling of hydrogen by neutron time-of-flight  

DOE Green Energy (OSTI)

The cross section for the H(t,n) reaction is large (200 to 700 mb/sr at 0/sup 0/) and smoothly varying. The usefulness of this reaction for depth profiling hydrogen in solids was investigated using the pulsed T/sup +/ beam from the Los Alamos vertical Van de Graaff. Neutron spectra from targets of Ti and TiH/sub 2/ with a nominal thickness of ten microns were compared with targets of SiO/sub 2/, C and Au to assess the importance of neutron backgrounds from triton reactions with the constituents of those targets. A 2.54-cm-diameter by 2.54-cm-thick stilbene neutron detector was placed at 0/sup 0/ 5.35 meters from the target. Pulse shape discrimination virtually eliminated gamma-ray background. When the neutron spectra were transformed into profiles, the background corrected TiH/sub 2/ spectrum showed a uniform hydrogen concentration over ten microns. In the experimental geometry used, a measurement of the neutron spectrum produced when bombarding an Au target (on which (t,n) reactions are strongly inhibited by the Coulomb barrier) yields a background equivalent to a concentration of 3 at.% of hydrogen in Ti. This background is due to reactions on hydrogen, hydrocarbons, or other light nuclei on or in beam line components. Equivalent hydrogen atomic concentrations (in Ti) calculated from neutron spectra measured on the other targets were: SiO/sub 2/-11 at.%, Si-7 at.%, C-22 at.%, Ti-5 at.%. Development of high sensitivity for depth profiling hydrogen with this technique appears possible only for high Z host materials and will require careful attention to beam line and vacuum system design.

Davis, J.C.; Lefevre, H.W.; Poppe, C.H.; Drake, D.M.; Veeser, L.R.

1977-06-01T23:59:59.000Z

324

Vertical-axis wind turbines -- The current status of an old technology  

DOE Green Energy (OSTI)

Vertical-axis wind turbine technology is not well understood, even though the earliest wind machines rotated about a vertical axis. The operating environment of a vertical-axis wind turbine is quite complex, but detailed analysis capabilities have been developed and verified over the last 30 years. Although vertical-axis technology has not been widely commercialized, it exhibits both advantages and disadvantages compared to horizontal-axis technology, and in some applications, it appears to offer significant advantages.

Berg, D.E.

1996-12-31T23:59:59.000Z

325

Aerosol optical depth increase in partly cloudy conditions  

Science Conference Proceedings (OSTI)

Remote sensing observations of aerosol from surface and satellite instruments are extensively used for atmospheric and climate research. From passive sensors, the apparent cloud-free atmosphere in the vicinity of clouds often appears to be brighter then further away from the clouds, leading to an enhancement in the retrieved aerosol optical depth. Mechanisms contributing to this enhancement, including contamination by undetected clouds, hygroscopic growth of aerosol particles, and meteorological conditions, have been debated in recent literature, but an extent to which each of these factors influence the observed enhancement is poorly known. Here we used 11 years of daily global observations at 10x10 km2 resolution from the MODIS on the NASA Terra satellite to quantify as a function of cloud fraction (CF). Our analysis reveals that, averaged over the globe, the clear sky is enhanced by ? = 0.05 which corresponds to relative enhancements of 25% in cloudy conditions (CF=0.8-0.9) compared with relatively clear conditions (CF=0.1-0.2). Unlike the absolute enhancement ?, the relative increase in ? is rather consistent in all seasons and is 25-35% in the subtropics and 15-25% at mid and higher latitudes. Using a simple Gaussian probability density function model to connect cloud cover and the distribution of relative humidity, we argue that much of the enhancement is consistent with aerosol hygroscopic growth in the humid environment surrounding clouds. Consideration of these cloud-dependent effects will facilitate understanding aerosol-cloud interactions and reduce the uncertainty in estimates of aerosol radiative forcing by global climate models.

Chand, Duli; Wood, R.; Ghan, Steven J.; Wang, Minghuai; Ovchinnikov, Mikhail; Rasch, Philip J.; Miller, Steven D.; Schichtel, Bret; Moore, Tom

2012-09-14T23:59:59.000Z

326

Blade Offset and Pitch Effects on a High Solidity Vertical Axis Wind Turbine  

E-Print Network (OSTI)

ABSTRACT A high solidity, small scale, 2.5m diameter by 3m high Vertical Axis Wind Turbine (VAWT, performance 1. INTRODUCTION Small scale vertical axis wind turbines (VAWTs) show potential for urban rooftop turbines. Keywords: Vertical Axis Wind Turbine, VAWT, airfoil, pitch, blade, mount, offset, high solidity

Tullis, Stephen

327

Well Posedness of the Initial Value Problem for Vertically Discretized Hydrostatic Equations  

Science Conference Proceedings (OSTI)

Vertically discretized linearized hydrostatic equations in hybrid coordinates are considered. The matrix of vertical structure, which depends on vertical discretization and determines the classification of the obtained system of time-dependent partial ... Keywords: initial value problems, numerical weather prediction, oscillatory matrices, well posedness

Andrei Bourchtein; Vladimir Kadychnikov

2003-01-01T23:59:59.000Z

328

An Examination of the Efficiency, Foreclosure, and Collusion Rationales for Vertical Takeovers  

Science Conference Proceedings (OSTI)

We investigate the efficiency, foreclosure, and collusion rationales for vertical integration in a large sample of vertically related takeovers. The efficiency rationale, as discussed under the transaction cost economics and property rights theories, ... Keywords: acquisitions, antitrust, collusion, corporate finance, corporate restructuring, efficiency, finance, firm boundaries, foreclosure, market power, mergers, product markets, vertical integration

Jaideep Shenoy

2012-08-01T23:59:59.000Z

329

Tall concrete buildings subject to vertically moving fires: A case study approach.  

E-Print Network (OSTI)

??Fire in buildings can have a severe impact in terms of both human safety and potential economic loss. This is especially true in the case (more)

Fletcher, Ian A

2009-01-01T23:59:59.000Z

330

Identification of Vertical Profiles of Radar Reflectivity for Hydrological Applications Using an Inverse Method. Part I: Formulation  

Science Conference Proceedings (OSTI)

The vertical variability of reflectivity in the radar beam is one of the main sources of error in estimating rainfall intensity. This vertical variability, which has several origins, is characterized globally by a function called "vertical ...

Herv Andrieu; Jean Dominique Creutin

1995-01-01T23:59:59.000Z

331

Simultaneous global coupling and vertical dispersion correction in RHIC  

SciTech Connect

Residual vertical dispersion on the order of +/-0.2 m (peak to peak) has been measured at store energies for both polarized protons and heavy ion beams in RHIC. The hypothesis is that this may have impact on the polarization transmission efficiency during the energy ramp, the polarization lifetime at store and, for heavy ions, the dynamic aperture. An algorithm to correct global coupling and dispersion simultaneously using existing skew quadrupoles was developed. Measured coupling and dispersion functions acquired before and after correction are presented.

Liu C.; Luo, Y.; Marusic, A.; Minty, M.

2012-05-20T23:59:59.000Z

332

The space of stability conditions for quivers with two vertices.  

E-Print Network (OSTI)

The purpose of this article is to study the space of stability conditions $\\stab(P_n)$ on the bounded derived category $\\D^b(P_n)$ of finite dimensional representations of a quiver $P_n$ with two vertices and $n$ parallel arrows. There is a local homeomorphism $\\z:\\stab(P_n)\\rightarrow\\C^2$. We show that, when the number of arrows is one or two, the map is a covering map if we restrict it to the complement of a line arrangement. When the number of arrows is greater than two we need to remove uncountably many lines to obtain a covering map.

Takahisa Shiina

333

Torque ripple in a Darrieus, vertical axis wind turbine  

DOE Green Energy (OSTI)

Interaction between a steady wind and a rotating, Darrieus, vertical axis wind turbine produces time periodic aerodynamic loads which cause time dependent torque variations, referred to as torque ripple, to occur in the mechanical link between the turbine and the electrical generator. There is concern for the effect of torque ripple upon fatigue life of drive train components and upon power quality. An analytical solution characterizing the phenomenon of torque ripple has been obtained which is based upon a Fourier expansion of the time dependent features of the problem. Numerical results for torque ripple, some experimental data, determination of acceptable levels and methods of controlling it, are presented and discussed.

Reuter, R.C. Jr.

1980-01-01T23:59:59.000Z

334

ARM - Evaluation Product - MicroPulse LIDAR Cloud Optical Depth (MPLCOD)  

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

ProductsMicroPulse LIDAR Cloud Optical Depth ProductsMicroPulse LIDAR Cloud Optical Depth (MPLCOD) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : MicroPulse LIDAR Cloud Optical Depth (MPLCOD) 1999.05.01 - 2004.05.14 Site(s) SGP General Description The MPLCOD VAP retrieves the column cloud visible optical depth using LIDAR derived backscatter from the MPLNOR (Micro Pulse Lidar Normalized Backscatter) and radiosonde thermodynamic profiles. The optical depth retrieval is derived following Comstock et al. (2001), which retrieves visible optical depth and layer average backscatter-to-extinction ratio (k) at the lidar wavelength for each backscatter profile. Data Information Data Directory Contacts Principal Investigator Jennifer Comstock (509) 372-424

335

Control system for a vertical-axis windmill  

DOE Patents (OSTI)

A vertical-axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure, when wind speed is sufficient. A microprocessor controller is used to process information on wind speed, wind direction and RPM of the rotating structure to develop an electrical signal for establishing blade position. The preferred embodiment of the invention, when connected to a utility grid, is designed to generate 40 kilowatts of power when exposed to a 20 mile per hour wind. The control system for the windmill includes electrical blade actuators that modulate the blades of the rotating structure. Blade modulation controls the blade angle of attack, which in turn controls the RPM of the rotor. In the preferred embodiment, the microprocessor controller provides the operation logic and control functions. A wind speed sensor provides inputs to start or stop the windmill, and a wind direction sensor is used to keep the blade flip region at 90 and 270/sup 0/ to the wind. The control system is designed to maintain constant rotor RPM when wind speed is between 10 and 40 miles per hour.

Brulle, R.V.

1981-09-03T23:59:59.000Z

336

Vertical feed stick wood fuel burning furnace system  

DOE Patents (OSTI)

A stove or furnace for efficient combustion of wood fuel includes a vertical feed combustion chamber (15) for receiving and supporting wood fuel in a vertical attitude or stack. A major upper portion of the combustion chamber column comprises a water jacket (14) for coupling to a source of water or heat transfer fluid for convection circulation of the fluid. The locus (31) of wood fuel combustion is thereby confined to the refractory base of the combustion chamber. A flue gas propagation delay channel (34) extending laterally from the base of the chamber affords delayed travel time in a high temperature refractory environment sufficient to assure substantially complete combustion of the gaseous products of wood burning with forced air prior to extraction of heat in heat exchanger (16). Induced draft draws the fuel gas and air mixture laterally through the combustion chamber and refractory high temperature zone to the heat exchanger and flue. Also included are active sources of forced air and induced draft, multiple circuit couplings for the recovered heat, and construction features in the refractory material substructure and metal component superstructure.

Hill, Richard C. (Orono, ME)

1982-01-01T23:59:59.000Z

337

Thrust stand for vertically oriented electric propulsion performance evaluation  

Science Conference Proceedings (OSTI)

A variation of a hanging pendulum thrust stand capable of measuring the performance of an electric thruster operating in the vertical orientation is presented. The vertical orientation of the thruster dictates that the thruster must be horizontally offset from the pendulum pivot arm, necessitating the use of a counterweight system to provide a neutrally stable system. Motion of the pendulum arm is transferred through a balance mechanism to a secondary arm on which deflection is measured. A noncontact light-based transducer is used to measure displacement of the secondary beam. The members experience very little friction, rotating on twisting torsional pivots with oscillatory motion attenuated by a passive, eddy-current damper. Displacement is calibrated using an in situ thrust calibration system. Thermal management and self-leveling systems are incorporated to mitigate thermal and mechanical drifts. Gravitational force and torsional spring constants associated with flexure pivots provide restoring moments. An analysis of the design indicates that the thrust measurement range spans roughly four decades, with the stand capable of measuring thrust up to 12 N for a 200 kg thruster and up to approximately 800 mN for a 10 kg thruster. Data obtained from calibration tests performed using a 26.8 lbm simulated thruster indicated a resolution of 1 mN on 100 mN level thrusts, while those tests conducted on a 200 lbm thruster yielded a resolution of roughly 2.5 mN at thrust levels of 0.5 N and greater.

Moeller, Trevor [University of Tennessee Space Institute, Tullahoma, Tennessee 37388 (United States); Polzin, Kurt A. [NASA, Marshall Space Flight Center, Huntsville, Alabama 35812 (United States)

2010-11-15T23:59:59.000Z

338

The Weapons of the "True Warfaring Christian": Right Reason and Free Will in Seventeenth-Century Literature  

E-Print Network (OSTI)

Milton writes in Areopagitica of the "true warfaring Christian" who can "apprehend and consider vice with all her baits and seeming pleasures, and yet abstain, and yet distinguish, and yet prefer that which is truly better." Though many reformers saw both human nature and the faculty of reason as depraved after the fall, Milton and other radical writers in the period emphasized the role that reason can and should play in the experience of spiritual warfare. The dissertation therefore begins by considering the theological contexts within which writers of the English Reformation understood evil and human encounters with evil, especially in the form of temptations, but also in the form of disturbing dreams and satanic presences. It then considers some epistemological problems as related to the experience of such conflicts: reason, especially right reason; knowledge, conscience and memory; and free will. Focusing on the texts of John Milton, Aemilia Lanyer, Richard Norwood, and John Bunyan, this study shows that these radical religious writers refuse to conform to the general tendency in Reformation theology to discount the use of reason. Eve's dream in Milton's Paradise Lost reveals the proper use of right reason in spiritual warfare, while the actual temptation scenes in Paradise Lost and Lanyer's Salve Deus Rex Judaeorum point to a fundamental failure of reason in the fall. Norwood's Confessions, Milton's Comus, and Milton's Samson Agonistes portray the triumphs of human reason over evil and temptation, though there remains an awareness of the constraints placed upon reason by their fallen nature such that reason needs the aid of divine grace to function as right reason. Milton's Paradise Regained and Bunyan's Pilgrim's Progress point to the extraordinary victories gained by Christ and Christian through the use of right reason and memory to direct the will toward the highest goods. These texts offer a counter-voice to those who would dismiss the possibilities of the powers of right reason. Despite the awareness of the inherent limits of fallen reason, these radical reformists generally find reason an indispensable tool in spiritual battles that helps direct their wills to the highest good.

Bradley, Nancy R.

2009-08-01T23:59:59.000Z

339

Precipitation Identification from Radar Wind Profiler Spectral Moment Data: Vertical Velocity Histograms, Velocity Variance, and Signal PowerVertical Velocity Correlations  

Science Conference Proceedings (OSTI)

Correlations between range-corrected signal power Src and radial vertical velocity Vr, from the vertical beam of a UHF wind profiler can be used to distinguish between air- and precipitation-dominated echoes using an SrcVr correlation diagram. ...

F. Martin Ralph; Paul J. Neiman; Dominique Ruffieux

1996-06-01T23:59:59.000Z

340

Total instantaneous energy transport in polychromatic fluid gravity waves at finite depth  

Science Conference Proceedings (OSTI)

The total instantaneous energy transport can be found for polychromatic waves when using the deep water approximation. Expanding this theory to waves in waters of finite depth

J. Engstrm; J. Isberg; M. Eriksson; M. Leijon

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Weighted exponential regression for characterizing radionuclide concentrations in soil depth profiles  

Science Conference Proceedings (OSTI)

Characterization of radionuclide concentrations in soil profiles requires accurate evaluation of the depth distribution of the concentrations as measured by gamma emissions. An ongoing study based on 137Cs activity has shown that such concentration data generally follow an exponential trend when the fraction of radioactivity below depth is plotted against the depth. The slope of the exponential regression fit is defined as alpha/rho, the depth profile parameter. A weighted exponential regression procedure has been developed to compute a mean ??? for a group of related soil samples. Regression results from different areas or from different time periods can be used to compare representative radionuclide concentrations for the specified groupings.

C.P.Oertel; J.R.Giles

2009-11-01T23:59:59.000Z

342

Angle of crack propagation for a vertical hydraulic fracture  

DOE Green Energy (OSTI)

Using the strain-energy-density-factor (S) theory, the positive fracture angle +theta/sub o/ (the initial fracture angle of crack propagation) of a near-vertical crack is predicted by using the opening- and sliding-mode stress-intensity factors in the presence of the overburden pressure, the least in situ horizontal principal stress, and the borehole fluid pressure. The crack spreads in the positive theta/sub o/ direction (counter-clockwise) in the plane for which S is a minimum, S/sub min/. It was verified that S/sub min/ is greater than or equal to S/sub c/. The quantity S/sub c/ is defined as the critical value of S, and remains essentially constant. Of interest is the numerical example for calculating fracture angle and the critical uniform borehole fluid pressure required to initiate fracture at such an angle for the present LASL Dry Hot Rock Geothermal Energy Program. (auth)

Sarda, J.P.; Hsu, Y.C.

1975-12-01T23:59:59.000Z

343

Instrument Development Tethered Balloon Sounding System for Vertical Radiation Profiles  

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

Tethered Balloon Sounding System Tethered Balloon Sounding System for Vertical Radiation Profiles C. D. Whiteman J. M. Alzheimer G. A. Anderson M. R. Garnich W. J. Shaw Pacific Northwest Laboratory Richland, WA 99352 platform is built on a triangular frame identical to the one on the Sky Platform, but the MSP carries no radiometric sensors, control loop, or leveling motors. Rather. the MSP is instrumented to measure the motions to which the Sky Platform will be subjected; the data provide engineering information to be used in the final design of the control loop and structural elements of the Sky Platform. An array of six miniature solid state accelerometers provides the raw data from which balloon motions are determined. Future plans call for the installation of a small attitude gyroscope on the

344

Natural convection in a vertical enclosure with internal permeable screen  

SciTech Connect

This paper documents the thermal insulation effect of a screen installed inside a vertical rectangular enclosure (e.g., double-glazed window). The screen is a venetian blind system made out of horizontal strips that can be rotated. The focus is on the closed position, where the strips almost touch. The effect of this permeable screen on the temperature field, the flow field, and the overall heat transfer rate is determined numerically. The study shows that there exists a ceiling (critical) conductance for the air leakage through the screen, above which the screen does not cause a significant drop in the overall heat transfer rate. A numerical example shows how this critical conductance can be used to calculate the critical spacing that can be tolerated between two consecutive strips in the screen.

Zhang, Z.; Bejan, A.; Lage, J.L. (Duke Univ., Durham, NC (USA))

1991-05-01T23:59:59.000Z

345

The ATLAS Muon Trigger vertical slice at LHC startup  

E-Print Network (OSTI)

The ATLAS trigger system has a three-levels structure, implemented to retain interesting physics events, here described for the muon case ("Muon Vertical Slice"). The first level, implemented in a custom hardware, uses measurements from the trigger chambers of the Muon Spectrometer to select muons with high transverse momentum and defines a Region of Interest (RoI) in the detector. RoIs are then processed by a second trigger level, in which fast algorithms run on an online software architecture. Full granularity information from precision chambers is accessed inside RoIs. A third trigger level (Event Filter), using offline-like algorithms and accessing the full event, provide the best possible muon reconstruction/identification and finally confirm or discard the trigger hypothesis formed at earlier levels. Implementation and performance of the full muon trigger slice, together with first events triggered with LHC beams on, are presented.

Grancagnolo, Sergio

2009-01-01T23:59:59.000Z

346

Vertical arrays for fracture mapping in geothermal systems  

DOE Green Energy (OSTI)

In collaboration with UNOCAL Geothermal Operations, Los Alamos National Laboratory assessed the feasibility of using vertical arrays of borehole seismic sensors for mapping of microseismicity in The Geysers geothermal field. Seismicity which arises from minute displacements along fracture or fault surfaces has been shown in studies of seismically active oil reservoirs to be useful in identifying fractures affected by and possibly contributing to production. Use of retrievable borehole seismic packages at The Geysers was found to reduce the threshold for detection of microearthquakes by an estimated 2--3 orders of magnitude in comparison to surface-based sensors. These studies led to the design, materials selection, fabrication, and installation of a permanent array of geophones intended for long term seismic monitoring and mapping of fractures in the vicinity of the array at The Geysers.

Albright, J.N. [Los Alamos National Lab., NM (United States); Rutledge, J.T.; Fairbanks, T.D. [Nambe Geophysics, Inc. (United States); Thomson, J.C. [Lithos Inc. (United States); Stevenson, M.A. [Petroleum Geo-Services (United States)

1998-12-01T23:59:59.000Z

347

CSAMT method for determining depth and shape of a sub-surface conductive object  

SciTech Connect

The depth to and size of an underground object may be determined by sweeping a CSAMT signal and locating a peak response when the receiver spans the edge of the object. The depth of the object is one quarter wavelength in the subsurface media of the frequency of the peak.

Lee, David O. (Albuquerque, NM); Montoya, Paul C. (Albuquerque, NM); Wayland, Jr., J. Robert (Albuquerque, NM)

1986-01-01T23:59:59.000Z

348

Non-photorealistic camera: depth edge detection and stylized rendering using multi-flash imaging  

Science Conference Proceedings (OSTI)

We present a non-photorealistic rendering approach to capture and convey shape features of real-world scenes. We use a camera with multiple flashes that are strategically positioned to cast shadows along depth discontinuities in the scene. The projective-geometric ... Keywords: depth edges, image enhancement, non-photorealistic rendering

Ramesh Raskar; Kar-Han Tan; Rogerio Feris; Jingyi Yu; Matthew Turk

2005-07-01T23:59:59.000Z

349

Hurricane-Generated Depth-Averaged Currents and Sea Surface Elevation  

Science Conference Proceedings (OSTI)

A theory of the depth-averaged currents and sea surface elevation generated by a moving hurricane in a stratified ocean with flat bottom is presented. Using a scale analysis of the depth-integrated momentum and continuity equations, it is found ...

Isaac Ginis; Georgi Sutyrin

1995-06-01T23:59:59.000Z

350

Non-photorealistic camera: depth edge detection and stylized rendering using multi-flash imaging  

Science Conference Proceedings (OSTI)

We present a non-photorealistic rendering approach to capture and convey shape features of real-world scenes. We use a camera with multiple flashes that are strategically positioned to cast shadows along depth discontinuities in the scene. The projective-geometric ... Keywords: depth edges, image enhancement, non-photorealistic rendering

Ramesh Raskar; Kar-Han Tan; Rogerio Feris; Jingyi Yu; Matthew Turk

2004-08-01T23:59:59.000Z

351

From PD to Nonlinear Adaptive Depth-Control of a Tethered Autonomous Underwater Vehicle  

E-Print Network (OSTI)

From PD to Nonlinear Adaptive Depth-Control of a Tethered Autonomous Underwater Vehicle D and an adaptive nonlinear state feedback one, both applied on a tethered autonomous underwater vehicle. The aim performed using each of the above mentioned control laws. Keywords: Underwater robotics, Depth control

Paris-Sud XI, Université de

352

Combining multiple depth cameras and projectors for interactions on, above and between surfaces  

Science Conference Proceedings (OSTI)

Instrumented with multiple depth cameras and projectors, LightSpace is a small room installation designed to explore a variety of interactions and computational strategies related to interactive displays and the space that they inhabit. LightSpace cameras ... Keywords: augmented reality, depth cameras, interactive spaces, surface computing, ubiquitous computing

Andrew D. Wilson; Hrvoje Benko

2010-10-01T23:59:59.000Z

353

Method for determining depth and shape of a sub-surface conductive object  

DOE Patents (OSTI)

The depth to and size of an underground object may be determined by sweeping a controlled source audio magnetotelluric (CSAMT) signal and locating a peak response when the receiver spans the edge of the object. The depth of the object is one quarter wavelength in the subsurface media of the frequency of the peak. 3 figures.

Lee, D.O.; Montoya, P.C.; Wayland, Jr.

1984-06-27T23:59:59.000Z

354

Model for hydrogen isotope backscattering, trapping and depth profiles in C and a-Si  

DOE Green Energy (OSTI)

A model of low energy hydrogen trapping and backscattering in carbon and a-silicon is described. Depth profiles are calculated and numerical results presented for various incident angular and energy distributions. The calculations yield a relation between depth profiles and the incident ion energy distribution. The use of this model for tokamak plasma diagnosis is discussed.

Cohen, S.A.; McCracken, G.M.

1979-03-01T23:59:59.000Z

355

Modeling risk and simulation-based optimization of channel depths at Cam Pha Coal Port  

Science Conference Proceedings (OSTI)

This paper presents a simulation-based method and a risk model of ship grounding for a long-term optimization of channel depths. The long-term optimization of channel depths should be considered a two-stage process: Firstly, establishing a ship entrance ... Keywords: entrance channel, risk modeling, ship grounding, simulation

N. M. Quy; J. K. Vrijling; P. H. A. J. M Gelder; R. Groenveld

2007-10-01T23:59:59.000Z

356

Kinect in the kitchen: testing depth camera interactions in practical home environments  

Science Conference Proceedings (OSTI)

Depth cameras have become a fixture of millions of living rooms thanks to the Microsoft Kinect. Yet to be seen is whether they can succeed as widely in other areas of the home. This research takes the Kinect into real-life kitchens, where touchless gestural ... Keywords: cooking, depth camera, gestures, home, joint selection, kinect, kitchen, push gesture, recipes

Galen Panger

2012-05-01T23:59:59.000Z

357

A comparison of carbide fracture during fixed depth and fixed load scratch tests  

SciTech Connect

In order to simulate abrasion of dual-phase materials containing large carbides under fixed depth conditions an apparatus has been designed and used to perform scratch tests at a fixed depth of cut on such materials. The scratch test consists of two support arms tipped with small steel balls held in contact with surface by /sup 700/ g, while the scratch tool is mounted on the tip of a central arm whose adjustable length allow control of the depth of cut. The scratch tool does not deflect significant when it encounters a large carbide. Scratch tests with the new apparatus have been performed on Co-base Stellite alloys containing large Cr-rich carbides, using individual particles of alumina as scratch tools to generate fixed depth scratches. A in situ SEM scratch test apparatus has also been used to genrate fixed load scratches. Comparison of the scratches shows that for comparable average scratch depths, under fixed load conditions the scratch tool deflects over the carbides without causing fracture, but that since it cannot deflect under fixed depth conditions it induces gross carbide fracture. Results suggest that the fixed depth scratch test can be successfully employed to simulate fixed depth abrasion, which has been previously shown to generate gross carbide fracture in these alloys. The in situ SEM scratch test simulates fixed load abrasion conditions such as those which occur in rubber wheel abrasion tests. 12 refs., 9 figs

Prasad, S.V.; Kosel, T.H.

1985-01-01T23:59:59.000Z

358

A Comparison of Cirrus Cloud Visible Optical Depth Derived from Lidar  

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

Comparison of Cirrus Cloud Visible Optical Depth Derived from Lidar Comparison of Cirrus Cloud Visible Optical Depth Derived from Lidar Lo, Chaomei Pacific Northwest National Laboratory Comstock, Jennifer Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Category: Cloud Properties Optically thin clouds (e.g. optical depth < 3) can have a significant impact on radiative heating in the atmosphere, particularly in the cold upper troposphere. Currently, there is no value-added product (VAP) in the Atmospheric Radiation Measurement (ARM) program archive that produces thin cloud optical depth, particularly at the Tropical Western Pacific and North Slope of Alaska sites. A VAP is under development to obtain the cirrus cloud visible optical depth from the MPLNOR (Micro Pulse Lidar Normalized

359

The canonical transformation and massive CSW vertices for MHV-SQCD  

E-Print Network (OSTI)

The similarity of massive CSW scalar vertices and quark vertices can be understood using a kind of light-cone SUSY transformation presented in this paper. We also show that the canonical transformation generating the MHV-SQCD lagrangian, can be fixed by applying this light-cone SUSY transformation to the canonical transformation for MHV-QCD obtained in paper arxiv:0805.0239. Most of the massive CSW vertices for SQCD can also be pinned down in this way.

Tim R. Morris; Zhiguang Xiao

2008-10-21T23:59:59.000Z

360

The Influence of Aerodynamic Stall on the Performance of Vertical Axis Wind Turbines.  

E-Print Network (OSTI)

??There is currently an increasing desire for local small-scale sustainable energy generation. This has lead to increased interest in the concept of the vertical axis (more)

Edwards, Jonathan

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Mesh Requirement Investigation for 2D and 3D Aerodynamic Simulation of Vertical Axis Wind Turbines.  

E-Print Network (OSTI)

??The accuracy of a Computational Fluid Dynamics (CFD) model to capture the complex flow around a small vertical axis wind turbine (VAWT) on 2D and (more)

Naghib Zadeh, Saman

2013-01-01T23:59:59.000Z

362

Characterization of the Ground Thermal Response to Heating by a Deep Vertical Borehole Heat Exchanger.  

E-Print Network (OSTI)

??This thesis presents an experiment and an analysis that evaluates some of the long-standing assumptions in deep vertical borehole ground heat exchanger (GHX) theory. These (more)

Olfman, Maeir Zalman

2012-01-01T23:59:59.000Z

363

Power in the Vertical: Using Wind Profiler Data to Study Precipitation  

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

in the Vertical: Using Wind Profiler Data to Study Precipitation For original submission and image(s), see ARM Research Highlights http:www.arm.govsciencehighlights Research...

364

Flow of fracturing foams in vertical, horizontal and inclined pipes  

E-Print Network (OSTI)

Foams are complex mixtures of a gas and a liquid, with the latter being the continuous phase. The rheological properties of foams are strongly influenced by parameters like temperature, absolute pressure, foam quality, texture, foam-channel wall effects, liquid phase properties, and type and concentration of surfactant. The high solids carrying capacity, the minimum amount of fluid placed in the formation, and the excellent fluid recovery after treatment are some of the advantages that foam fluids present when used during fracturing operations. This thesis is a study of foam flow in pipes, the pressure calculations, the study of rheological properties and their evaluation. The objectives of this research are to: 1. Compare various rheological models representing foams. 2. Develop an algorithm that finds the rheological parameters for the different models at different pressures in the pipe. 3. Provide an engineer with a method that predicts pressure at one end, if pressure at the other end is known, given the rheological parameters of the fluid, the diameter of the pipe and the inlet stream properties. 4. Provide a spreadsheet program for different fluid models that calculates pressures in an inclined, vertical or horizontal pipe. 5. Validate the programs. General curve fitting techniques are used to fit different models: namely, power law, Bingham plastic and Herschel Bulkley models to shear stress vs. shear rate data. The trend of the power law and Bingham plastic rheological parameters with respect to quality is observed. A method to estimate the rheological parameters at different pressures along the pipe using regression methods is developed. Spreadsheet programs for power law Bingham plastic and volume equalized power law model have been developed, which calculate pressures in inclined, horizontal and vertical pipes. The methods for the power law and Bingham plastic fluids are iterative methods. The volume equalized power law program adopts the volume equalized principle, which uses mechanical energy balance with frictional losses calculated from a rheological model. The mechanical energy balance is integrated to obtain a non-linear equation containing the unknown pressure.

Krindinti, Kshipraprasad H

2002-01-01T23:59:59.000Z

365

Visible light emitting vertical cavity surface emitting lasers  

DOE Patents (OSTI)

A vertical cavity surface emitting laser that emits visible radiation is built upon a substrate, then having mirrors, the first mirror on top of the substrate; both sets of mirrors being a distributed Bragg reflector of either dielectrics or other materials which affect the resistivity or of semiconductors, such that the structure within the mirror comprises a plurality of sets, each having a thickness of {lambda}/2n where n is the index of refraction of each of the sets; each of the mirrors adjacent to spacers which are on either side of an optically active bulk or quantum well layer; and the spacers and the optically active layer are from one of the following material systems: In{sub z}(Al{sub y}Ga{sub 1{minus}y}){sub 1{minus}z}P, InAlGaAs, AlGaAs, InGaAs, or AlGaP/GaP, wherein the optically active region having a length equal to m {lambda}/2n{sub eff} where m is an integer and n{sub eff} is the effective index of refraction of the laser cavity, and the spacer layer and one of the mirrors being transmissive to radiation having a wavelength of {lambda}/n, typically within the green to red portion of the visible spectrum. 10 figs.

Bryan, R.P.; Olbright, G.R.; Lott, J.A.; Schneider, R.P. Jr.

1995-06-27T23:59:59.000Z

366

A new concept of vertically integrated pattern recognition associative memory  

SciTech Connect

Hardware-based pattern recognition for fast triggering on particle tracks has been successfully used in high-energy physics experiments for some time. The CDF Silicon Vertex Trigger (SVT) at the Fermilab Tevatron is an excellent example. The method used there, developed in the 1990's, is based on algorithms that use a massively parallel associative memory architecture to identify patterns efficiently at high speed. However, due to much higher occupancy and event rates at the LHC, and the fact that the LHC detectors have a much larger number of channels in their tracking detectors, there is an enormous challenge in implementing fast pattern recognition for a track trigger, requiring about three orders of magnitude more associative memory patterns than what was used in the original CDF SVT. Scaling of current technologies is unlikely to satisfy the scientific needs of the future, and investments in transformational new technologies need to be made. In this paper, we will discuss a new concept of using the emerging 3D vertical integration technology to significantly advance the state-of-the-art for fast pattern recognition within and outside HEP. A generic R and D proposal based on this new concept, with a few institutions involved, has recently been submitted to DOE with the goal to design and perform the ASIC engineering necessary to realize a prototype device. The progress of this R and D project will be reported in the future. Here we will only focus on the concept of this new approach.

Liu, Ted; Hoff, Jim; Deptuch, Grzegorz; Yarema, Ray; /Fermilab

2011-11-01T23:59:59.000Z

367

Advance in Vertical Buffered Electropolishing on Niobium for Particle Accelerators*  

Science Conference Proceedings (OSTI)

Niobium (Nb) is the most popular material that has been employed for making superconducting radio frequency (SRF) cavities to be used in various particle accelerators over the last couple of decades. One of the most important steps in fabricating Nb SRF cavities is the final chemical removal of 150 {mu}m of Nb from the inner surfaces of the SRF cavities. This is usually done by either buffered chemical polishing (BCP) or electropolishing (EP). Recently a new Nb surface treatment technique called buffered electropolishing (BEP) has been developed at Jefferson Lab. It has been demonstrated that BEP can produce the smoothest surface finish on Nb ever reported in the literature while realizing a Nb removal rate as high as 10 {mu}m/min that is more than 25 and 5 times quicker than those of EP and BCP(112) respectively. In this contribution, recent advance in optimizing and understanding BEP treatment technique is reviewed. Latest results from RF measurements on BEP treated Nb single cell cavities by our unique vertical polishing system will be reported.

A.T. Wu, S. Jin, J.D. Mammosser, C.E. Reece, R.A. Rimmer,L. Lin, X.Y. Lu, K. Zhao

2011-09-01T23:59:59.000Z

368

Axisymmetric Simulations of the ITER Vertical Stability Coil  

SciTech Connect

The ITER in-vessel coil system includes Vertical Stability (VS) coils and Edge Localized Mode (ELM) coils. There are two large VS ring coils, one upper and one lower. Each has four turns which are independently connected. The VS coils are needed for successful operation of ITER for most all of its operating modes. The VS coils must be highly reliable and fault tolerant. The operating environment includes normal and disruption Lorentz forces. To parametrically address all these design conditions in a tractable analysis requires a simplified model. The VS coils are predominately axisymmetric, and this suggests that an axisymmetric model can be meaningfully used to address the variations in mechanical design, loading, material properties, and time dependency. The axisymmetric finite element analysis described in this paper includes simulations of the bolted frictional connections used for the mounting details. Radiation and elastic-plastic response are modeled particularly for the extreme faulted conditions. Thermal connectivity is varied to study the effects of partial thermal connection of the actively cooled conductor to the remaining structure.

Titus, Peter H.

2013-07-09T23:59:59.000Z

369

Characterization of secondary phases in modified vertical bridgman growth czt  

Science Conference Proceedings (OSTI)

CdZnTe or 'CZT' crystals are highly suitable for use as a room temperature based spectrometer for the detection and characterization of gamma radiation. Over the last decade, the methods for growing high quality CZT have improved the quality of the produced crystals however there are material features that can influence the performance of these materials as radiation detectors. For example, various structural heterogeneities within the CZT crystals, such as twinning, pipes, grain boundaries (polycrystallinity), and secondary phases (SP) can have a negative impact on the detector performance. In this study, a CZT material was grown by the modified vertical Bridgman growth (MVB) method with zone leveled growth without excess Te in the melt. Visual observations of material from the growth of this material revealed significant voids and SP. Three samples from this material was analyzed using various analytical techniques to evaluate its electrical properties, purity and detector performance as radiation spectrometers and to determine the morphology, dimension and elemental/structural composition of one of the SP in this material. This material was found to have a high resistivity but poor radiation spectrometer performance. It had SP that were rich in polycrystalline aluminum oxide (Al{sub 2}O{sub 3}), metallic Te and polycrystalline CdZnTe and 15 to 50 {micro}m in diameter. Bulk elemental analyses of sister material from elsewhere in the boule did not contain high levels of Al so there is considerable elemental impurity heterogeneity within the boule from this growth.

Duff, Martine

2009-07-10T23:59:59.000Z

370

24-CHANNEL GEOPHONE ARRAY FOR HORIZONTAL OR VERTICAL BOREHOLES  

SciTech Connect

Improved ground-imaging capabilities have enormous potential to increase energy, environmental, and economic benefits by improving exploration accuracy and reducing energy consumption during the mining cycle. Seismic tomography has been used successfully to monitor and evaluate geologic conditions ahead of a mining face. A primary limitation to existing seismic tomography, however, is the placement of sensors. The goal of this project is to develop an array of 24 seismic sensors capable of being mounted in either a vertical or horizontal borehole. Development of this technology reduces energy usage in excavation, transportation, ventilation, and processing phases of the mining operation because less waste is mined and the mining cycle suffers fewer interruptions. This new technology benefits all types of mines, including metal/nonmetal, coal, and quarrying. The primary research tasks focused on sensor placement method, sensor housing and clamping design, and cabling and connector selection. An initial design is described in the report. Following assembly, a prototype was tested in the laboratory as well as at a surface stone quarry. Data analysis and tool performance were used for subsequent design modifications. A final design is described, of which several components are available for patent application. Industry partners have shown clear support for this research and demonstrated an interest in commercialization following project completion.

Erik C. Westman

2003-10-24T23:59:59.000Z

371

ANN and ANFIS models for performance evaluation of a vertical ground source heat pump system  

Science Conference Proceedings (OSTI)

The aim of this study is to demonstrate the comparison of an artificial neural network (ANN) and an adaptive neuro-fuzzy inference system (ANFIS) for the prediction performance of a vertical ground source heat pump (VGSHP) system. The VGSHP system using ... Keywords: Adaptive neuro-fuzzy inference system, Coefficient of performance, Ground source heat pump, Membership functions, Vertical heat exchanger

Hikmet Esen; Mustafa Inalli

2010-12-01T23:59:59.000Z

372

Blade shape for a tropskien type of vertical-axis wind turbine  

SciTech Connect

The equations derived to define a troposkien (the shape a completely flexible cable assumes when it is spun at a constant angular velocity about a vertical axis to which its two ends are attached) are described. The implications of the solutions on the design of a vertical-axis wind turbine are discussed for cases where gravity is neglected.

Blackwell, B.F.; Reis, G.E.

1977-03-01T23:59:59.000Z

373

Response of a Vertical Axis Wind Turbine to Time Varying Wind Conditions found within the Urban  

E-Print Network (OSTI)

Response of a Vertical Axis Wind Turbine to Time Varying Wind Conditions found within the Urban, 2010 PP 389­401 389 ABSTRACT Experimental testing of a vertical axis wind turbine within the urban of the turbine. Temporal variation of the wind with respect to the direction and velocity fluctuations

Tullis, Stephen

374

Performance Testing of a Small Vertical-Axis Wind Turbine , S. Tullis2  

E-Print Network (OSTI)

Performance Testing of a Small Vertical-Axis Wind Turbine R. Bravo1 , S. Tullis2 , S. Ziada3 of electric production [1]. Although most performance testing for small-scale wind turbines is conducted vertical-axis wind turbines (VAWT) in urban settings, full-scale wind tunnel testing of a prototype 3.5 k

Tullis, Stephen

375

Visualization of Transient Natural Convection Heat Transfer from a Vertical Rectangular Fin  

Science Conference Proceedings (OSTI)

Experiments on thermal visualization of transient natural convection from short vertical rectangular fins were conducted using the technique of laser holographic interferometry. A sequence of infinite-fringe interferograms recorded for the heating regime ... Keywords: interferograms, laser holographic interferometry, thermal visualization, transient natural convection, vertical rectangular fins

K. C. Leong; T. C. Kooi

1998-12-01T23:59:59.000Z

376

Analysis of wellbore instability in vertical, directional, and horizontal wells using field data  

E-Print Network (OSTI)

Analysis of wellbore instability in vertical, directional, and horizontal wells using field data M and directional wells is being redeveloped by drilling horizontal wells. The experience gained while drilling vertical and directional wells is not useful for drilling horizontal wells, as the failure rate is 1 in 3

Al-Majed, Abdulaziz Abdullah

377

Sustainability of Vertical Standards Consortia as Communities of Practice: A Multilevel Framework  

Science Conference Proceedings (OSTI)

It is challenging for vertical standards consortia (VSCs) to succeed and thrive, since they need to serve heterogeneous members, their operations depend on members' voluntary contributions, and the social interactions within them can be complex to manage. ... Keywords: Community Of Practice, Resource-Based Model, Standards, Sustainability, Vertical Standards Consortia

Kexin Zhao; Sarah Khan; Mu Xia

2011-10-01T23:59:59.000Z

378

Design and Analysis of a Tool for Planning and Simulating Dynamic Vertical Transport  

Science Conference Proceedings (OSTI)

Nowadays, most of the main companies in the vertical transport industry are researching tools capable of providing support for the design process of elevator systems. Numerous decisions have to be taken to obtain an accurate, comfortable, and high-quality ... Keywords: Vertical transport, elevator, lift, simulation

Pablo Corts; Jess Muuzuri; Luis Onieva

2006-04-01T23:59:59.000Z

379

Carbon nanotube vertical membranes for electrostatically actuated micro-electro-mechanical devices  

Science Conference Proceedings (OSTI)

In this work, we investigate vertically aligned carbon nanotube (CNT) membranes as building blocks to realize electrostatically actuated micro-electro-mechanical-systems (MEMS). The fabricated CNT dense arrays are grown on adjacent metal electrodes and ... Keywords: Capacitors, Carbon nanotube, MEMS, Membrane, NEMS, Vertically aligned

A. Arun; D. Acquaviva; M. Fernndez-Bolaos; P. Salet; H. Le-Poche; P. Pantigny; T. Idda; A. M. Ionescu

2010-05-01T23:59:59.000Z

380

A survey of vertical handover decision algorithms in Fourth Generation heterogeneous wireless networks  

Science Conference Proceedings (OSTI)

Vertical handover decision (VHD) algorithms are essential components of the architecture of the forthcoming Fourth Generation (4G) heterogeneous wireless networks. These algorithms need to be designed to provide the required Quality of Service (QoS) ... Keywords: 4G, Fourth Generation, Vertical handover, Wireless networks

Xiaohuan Yan; Y. Ahmet ?ekercio?lu; Sathya Narayanan

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

A Simple Technique for Simultaneous Suspension of Multiple Drops in a Small Vertical Wind Tunnel  

Science Conference Proceedings (OSTI)

A simple technique is described by which multiple millimeter-size water drops can be simultaneously suspended in an air stream above the test section of a 12 12 cm cross section of a vertical wind tunnel. Horizontal profiles of the vertical air ...

A. K. Kamra; D. V. Ahire

1985-09-01T23:59:59.000Z

382

An Integral Closure Model for the Vertical Turbulent Flux of a Scalar in a Mixed Layer  

Science Conference Proceedings (OSTI)

An integral closure model is proposed for the vertical turbulent transport of a scalar in a mixed layer. The flux divergences at a given level is related to a vertical integral of a weighting function multiplied by the difference between the ...

Brian H. Fiedler

1984-02-01T23:59:59.000Z

383

Using vertical aerial photography to estimate mass balance at a point  

E-Print Network (OSTI)

Using vertical aerial photography to estimate mass balance at a point L. A. RASMUSSEN 1 and R. M. KRIMMEL2 1 Geophysics Program, University of Washington, Seattle WA 98195, U.S.A. 2 US Geological Survey-94. Vertical aerial photography from late summer 1992, 1993, and 1994 is analyzed photogrammetrically to get

Rasmussen, L.A.

384

FITOVERT: A dynamic numerical model of subsurface vertical flow constructed wetlands  

Science Conference Proceedings (OSTI)

This paper introduces a mathematical model (FITOVERT) specifically developed to simulate the behaviour of vertical subsurface flow constructed wetlands (VSSF-CWs). One of the main goals of the development of FITOVERT was to keep the complexity of the ... Keywords: Constructed wetlands, Hydrodynamics, Modelling, Reactive transport, Unsaturated flow, Vertical subsurface flow

D. Giraldi; M. de Michieli Vitturi; R. Iannelli

2010-05-01T23:59:59.000Z

385

Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment Deeper  

Open Energy Info (EERE)

Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment Deeper Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment Deeper Temperature Gradient Drilling Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment Deeper Temperature Gradient Drilling Abstract Temperature gradient drilling has historically been a key tool in the exploration for geothermal resources in the Great Basin, USA, but regulatory, environmental, and accessibility issues, as well as the expense of drilling, are increasingly limiting its use. In cases where thermal groundwater is not overlain by near-surface cold aquifers, it is possible to augment temperature gradient drilling with temperatures measured from a 2-meter depth. We discuss the development of a rapid, efficient, and

386

Depth Profile of Uncompensated Spins in an Exchange-Bias System  

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

Depth Profile of Uncompensated Depth Profile of Uncompensated Spins in an Exchange-Bias System Depth Profile of Uncompensated Spins in an Exchange-Bias System Print Wednesday, 25 January 2006 00:00 The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is currently a subject of intense research because of its applications in the magnetic recording and read-head industries. An international collaboration headed by researchers from the University of California, San Diego, has used resonant x-ray scattering and polarized-neutron reflectometry to determine the depth-dependent magnetization in an exchange-biased sample. These results provide atomic-level insights into the mechanism of exchange bias, specifically the involvement of mutual interactions between two kinds of uncompensated spins in the antiferromagnet and spins in the ferromagnet.

387

Analysis of Langley optical depth data, with aerosol and gas retrievals,  

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

Analysis of Langley optical depth data, with aerosol and gas retrievals, Analysis of Langley optical depth data, with aerosol and gas retrievals, for the RSS 103 instrument in Barrow, Alaska Gianelli, Scott Columbia University - NASA/GISS Lacis, Andrew NASA/Goddard Institute for Space Studies Carlson, Barbara NASA/Goddard Institute for Space Studies Category: Aerosols Bimodal aerosol retrievals, and high-resolution retrevals of nitrogen dioxide, are performed on the Langley optical depth data from the RSS 103 device that was situated in Barrow, Alaska between March and August in 1999. The results show a higher fine mode aerosol optical depth on average than was retrieved by the RSS 102 at the SGP site. The seasonal cycle is also reversed with high values at Barrow occurring in the spring and low values in the summer. The fine mode effective radius also appears to

388

U.S. Average Depth of Dry Holes Developmental Wells Drilled ...  

Gasoline and Diesel Fuel Update (EIA)

Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Dry Holes Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6...

389

U.S. Average Depth of Natural Gas Exploratory Wells Drilled ...  

Annual Energy Outlook 2012 (EIA)

Wells Drilled (Feet per Well) U.S. Average Depth of Natural Gas Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8...

390

Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model  

Science Conference Proceedings (OSTI)

An analysis of the depth-integrated vorticity budget of the U.K. Fine Resolution Antarctic Model is used to investigate the mechanisms that maintain and dissipate vorticity in the Antarctic Circumpolar Current (ACC) and adjacent circulations of ...

N. C. Wells; B. A. De Cuevas

1995-11-01T23:59:59.000Z

391

U.S. Average Depth of Natural Gas Developmental Wells Drilled...  

Annual Energy Outlook 2012 (EIA)

Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Natural Gas Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6...

392

U.S. Average Depth of Natural Gas Exploratory and Developmental...  

Gasoline and Diesel Fuel Update (EIA)

and Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Natural Gas Exploratory and Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3...

393

U.S. Average Depth of Dry Exploratory and Developmental Wells...  

Annual Energy Outlook 2012 (EIA)

Exploratory and Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Dry Exploratory and Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3...

394

U.S. Average Depth of Dry Holes Exploratory Wells Drilled (Feet...  

Annual Energy Outlook 2012 (EIA)

Exploratory Wells Drilled (Feet per Well) U.S. Average Depth of Dry Holes Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

395

Influence of Filter Band Function on Retrieval of Aerosol Optical Depth from Sunphotometer Data  

Science Conference Proceedings (OSTI)

Beers attenuation law is the basis for the retrieval of aerosol optical depth (AOD) from sunphotometer data. However, the filter band function causes uncertainty during the retrieval of AOD from sunphotometer data, particularly for channels ...

Hao Zhang; Bing Zhang; Dongmei Chen; Junsheng Li; Guangning Zhao

2013-05-01T23:59:59.000Z

396

A Comparison of Mixing Depths Observed by Ground-Based Wind Profilers and an Airborne Lidar  

Science Conference Proceedings (OSTI)

The authors compare the mixing depths in the daytime convective boundary layers that were observed remotely by wind profilers and an airborne lidar during the 1995 Southern Oxidants Study. The comparison is used to determine whether the mixing ...

A. B. White; C. J. Senff; R. M. Banta

1999-05-01T23:59:59.000Z

397

Inference of Cloud Optical Depth from Aircraft-Based Solar Radiometric Measurements  

Science Conference Proceedings (OSTI)

A method is introduced for inferring cloud optical depth ? from solar radiometric measurements made on an aircraft at altitude z. It is assessed using simulated radiometric measurements produced by a 3D Monte Carlo algorithm acting on fields of ...

H. W. Barker; A. Marshak; W. Szyrmer; J-P. Blanchet; A. Trishchenko; Z. Li

2002-07-01T23:59:59.000Z

398

A Methodology for Measuring Cirrus Cloud Visible-to-Infrared Spectral Optical Depth Ratios  

Science Conference Proceedings (OSTI)

Knowledge of cirrus cloud optical depths is necessary to understand the earths current climate and to model the cloud radiation impact on future climate. Cirrus clouds, depending on the ratio of their shortwave visible to longwave infrared ...

Daniel H. DeSlover; William L. Smith; Paivi K. Piironen; Edwin W. Eloranta

1999-02-01T23:59:59.000Z

399

Inferring Optical Depth of Broken Clouds above Green Vegetation Using Surface Solar Radiometric Measurements  

Science Conference Proceedings (OSTI)

A method for inferring cloud optical depth ? is introduced and assessed using simulated surface radiometric measurements produced by a Monte Carlo algorithm acting on fields of broken, single-layer, boundary layer clouds derived from Landsat ...

Howard W. Barker; Alexander Marshak

2001-10-01T23:59:59.000Z

400

Interannual Variations of Aerosol Optical Depth over Coastal India: Relation to Synoptic Meteorology  

Science Conference Proceedings (OSTI)

Interannual variations in spectral aerosol optical depths (AOD) were examined using the data obtained from a chain of ground-based multiwavelength solar radiometers from various locations of the Indian peninsula during the dry winter season (...

Auromeet Saha; K. Krishna Moorthy; K. Niranjan

2005-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Estimating Cloud Field Albedo Using One-Dimensional Series Of Optical Depth  

Science Conference Proceedings (OSTI)

This study examines the ability to estimate regional cloud albedo using 1D series of cloud optical depth ? similar to those inferred from ground-based microwave radiometers. The investigation has two facets: use of appropriate radiative transfer ...

Howard W. Barker

1996-10-01T23:59:59.000Z

402

Intermediate-Depth Circulation of the Indian and South Pacific Oceans Measured by Autonomous Floats  

Science Conference Proceedings (OSTI)

As part of the World Ocean Circulation Experiment, 306 autonomous floats were deployed in the tropical and South Pacific Ocean and 228 were deployed in the Indian Ocean to observe the basinwide circulation near 900-m depth. Mean velocities, ...

Russ E. Davis

2005-05-01T23:59:59.000Z

403

Analysis of a Method to Estimate Chlorophyll-a Concentration from Irradiance Measurements at Varying Depths  

Science Conference Proceedings (OSTI)

A model to estimate chlorophyll-a concentration and yellow substance absorption at 440 nm from irradiance measurements made at varying depths is examined. The derivation of the model, requiring irradiance measurements at three wavebands, is ...

Jasmine S. Nahorniak; Mark R. Abbott; Ricardo M. Letelier; W. Scott Pegau

2001-12-01T23:59:59.000Z

404

Impact of Precipitation on Aerosol Spectral Optical Depth and Retrieved Size Distributions: A Case Study  

Science Conference Proceedings (OSTI)

A case study is presented on the impact of two isolated, strong thundershowers during a prevailing dry, sunny season on the spectral optical depths and inferred columnar size characteristics of atmospheric aerosols at a tropical station. Results ...

Auromeet Saha; K. Krishna Moorthy

2004-06-01T23:59:59.000Z

405

Depth-Dependent Studies of Tidally Induced Residual Currents on the Sides of Georges Bank  

Science Conference Proceedings (OSTI)

Using a depth-dependent tidal model, the tidally induced residual currents on the northern and southern sections of Georges Bank are computed and the effects of various physical parameters on the current are examined. Because of significant on-...

Kim-Tai Tee

1985-12-01T23:59:59.000Z

406

Impacts of Shortwave Penetration Depth on Large-Scale Ocean Circulation and Heat Transport  

Science Conference Proceedings (OSTI)

The impact of changes in shortwave radiation penetration depth on the global ocean circulation and heat transport is studied using the GFDL Modular Ocean Model (MOM4) with two independent parameterizations that use ocean color to estimate the ...

Colm Sweeney; Anand Gnanadesikan; Stephen M. Griffies; Matthew J. Harrison; Anthony J. Rosati; Bonita L. Samuels

2005-06-01T23:59:59.000Z

407

An Evaluation of Depth Resolution Requirements for Optical Profiling in Coastal Waters  

Science Conference Proceedings (OSTI)

Wave perturbations induce uncertainties in subsurface quantities determined from the extrapolation of optical measurements taken at different depths. An analysis of these uncertainties was made using data collected in the northern Adriatic Sea ...

Giuseppe Zibordi; Davide D'Alimonte; Jean-Franois Berthon

2004-07-01T23:59:59.000Z

408

Comparison of Cirrus Height and Optical Depth Derived from Satellite and Aircraft Measurements  

Science Conference Proceedings (OSTI)

During the International Cirrus Experiment (ICE'89) simultaneous measurements of Cirrus cloud-top height and optical depth by satellite and aircraft have been taken. Data from the Advanced Very High Resolution Radiometer (AVHRR) onboard the NOAA ...

M. Kstner; K. T. Kriebel; R. Meerktter; W. Renger; G. H. Ruppersberg; P. Wendling

1993-10-01T23:59:59.000Z

409

The Intrusion Depth of Density Currents Flowing into Stratified Water Bodies  

Science Conference Proceedings (OSTI)

Theory and laboratory experiments are presented describing the depth at which a density current intrudes into a linearly stratified water column, as a function of the entrainment ratio E, the buoyancy flux in the dense current B, and the ...

Mathew Wells; Parthiban Nadarajah

2009-08-01T23:59:59.000Z

410

Variations in Mixed-Layer Depths Arising from Inhomogeneous Surface Conditions  

Science Conference Proceedings (OSTI)

Current approaches to parameterizations of sub-grid-scale variability in surface sensible heat fluxes in general circulation models normally neglect the associated variability in mixed-layer depths. Observations and a numerical mesoscale model ...

J. C. Doran; S. Zhong

1995-08-01T23:59:59.000Z

411

A Laboratory Model of Thermocline Depth and Exchange Fluxes across Circumpolar Fronts  

Science Conference Proceedings (OSTI)

A laboratory experiment has been constructed to investigate the possibility that the equilibrium depth of a circumpolar front is set by a balance between the rate at which potential energy is created by mechanical and buoyancy forcing and the ...

Claudia Cenedese; John Marshall; J. A. Whitehead

2004-03-01T23:59:59.000Z

412

Comparison and Uncertainty of Aerosol Optical Depth Estimates Derived from Spectral and Broadband Measurements  

Science Conference Proceedings (OSTI)

An experimental comparison of spectral aerosol optical depth ?a,? derived from measurements by two spectral radiometers [a LI-COR, Inc., LI-1800 spectroradiometer and a Centre Suisse d'Electronique et de Microtechnique (CSEM) SPM2000 sun ...

Thomas Carlund; Tomas Landelius; Weine Josefsson

2003-11-01T23:59:59.000Z

413

Broadband Extinction Method to Determine Aerosol Optical Depth from Accumulated Direct Solar Radiation  

Science Conference Proceedings (OSTI)

There are two important problems in the aerosol optical depth (AOD) retrievals from hourly/daily/monthly accumulated pyrheliometer data, that is, how to select a suitable cosine of the solar zenith angle (?0) and how to eliminate or minimize ...

Jinhuan Qiu

2003-11-01T23:59:59.000Z

414

Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment...  

Open Energy Info (EERE)

Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment Deeper Temperature Gradient Drilling Jump to: navigation, search OpenEI Reference LibraryAdd to library...

415

Retrieval of Optical Depth for Heavy Smoke Aerosol Plumes: Uncertainties and Sensitivities to the Optical Properties  

Science Conference Proceedings (OSTI)

This paper is concerned with uncertainties in the Advanced Very High Resolution Radiometer (AVHRR)-based retrieval of optical depth for heavy smoke aerosol plumes generated from forest fires that occurred in Canada due to a lack of knowledge on ...

Jeff Wong; Zhanqing Li

2002-02-01T23:59:59.000Z

416

The Potential for Improved Boundary Layer Cloud Optical Depth Retrievals from the Multiple Directions of MISR  

Science Conference Proceedings (OSTI)

The Multiangle Imaging Spectroradiometer (MISR) views the earth with nine cameras, ranging from a 70 zenith angle viewing forward through nadir to 70 viewing aft. MISR does not have an operational cloud optical depth retrieval algorithm, but ...

K. Franklin Evans; Alexander Marshak; Tams Vrnai

2008-10-01T23:59:59.000Z

417

Remote Sensing of Cirrus Cloud Particle Size and Optical Depth Using Polarimetric Sensor Measurements  

Science Conference Proceedings (OSTI)

This paper presents a conceptual approach toward the remote sensing of cirrus cloud particle size and optical depth using the degree of polarization and polarized reflectance associated with the first three Stokes parameters, I, Q, and U, for the ...

S. C. Ou; K. N. Liou; Y. Takano; R. L. Slonaker

2005-12-01T23:59:59.000Z

418

Instrumentation to Measure the Depth/Time Fluctuations in Acoustic Pulses Propagated through Arctic Internal Waves  

Science Conference Proceedings (OSTI)

Instrumentation for measuring the evolution of volume-scattered acoustic signals in both depth and time is described. Measurements were taken for 12 days during the spring of 1985 with transmitters and receivers suspended beneath arctic pack ice ...

Terry E. Ewart; Stephen A. Reynolds

1990-02-01T23:59:59.000Z

419

A Case Study of the Morning Evolution of the Convective Boundary Layer Depth  

Science Conference Proceedings (OSTI)

Because of the importance of the convective boundary layer depth (CBLD) in determining pollutant concentrations near the surface, a study of the morning evolution of the convective boundary layer was carried out at the Central Nuclear de Almaraz, ...

Jos A. Garc; Mar L. Cancillo; Jos L. Cano

2002-10-01T23:59:59.000Z

420

Application of Sun/star photometry to derive the aerosol optical depth  

Science Conference Proceedings (OSTI)

Atmospheric aerosols play a crucial role in the radiative transfer and chemical processes that control the Earth's climate. Aerosol optical depth and other related aerosol characteristics are widely known during daytime through Sun photometers, and so ...

D. Perez-Ramirez; B. Ruiz; J. Aceituno; F. J. Olmo; L. Alados-Arboledas

2008-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "true vertical depth" 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

Wave- and Wind-Driven Flow in Water of Finite Depth  

Science Conference Proceedings (OSTI)

The authors first derive both Coriolis-induced and viscosity-induced stresses for arbitrary water depth and arbitrary wave direction. Opportunity is taken here to succinctly and rigorously derive the Longuet-Higgins virtual tangential stress due ...

Zhigang Xu; A. J. Bowen

1994-09-01T23:59:59.000Z

422

Spatial Inhomogeneities and the Spectral Behavior of Atmospheric Aerosol Optical Depth over the Atlantic Ocean  

Science Conference Proceedings (OSTI)

In this paper the results of investigations into atmospheric aerosol optical depth (AOD) over the Atlantic Ocean are discussed. The data were collected during five shipboard expeditions that took place between 1989 and 1996. Measurements were ...

Sergey M. Sakerin; Dmitry M. Kabanov

2002-02-01T23:59:59.000Z

423

Optical Depth of Overcast Cloud across Canada: Estimates Based on Surface Pyranometer and Satellite Measurements  

Science Conference Proceedings (OSTI)

Overcast cloud optical depths ? are inferred from hourly, broadband surface pyranometer measurements of global irradiance for 21 Canadian stations. A radiative transfer model that treats the atmosphere as plane-parallel and horizontally ...

H. W. Barker; T. J. Curtis; E. Leontieva; K. Stamnes

1998-11-01T23:59:59.000Z

424

U.S. Average Depth of Crude Oil, Natural Gas, and Dry Exploratory...  

Annual Energy Outlook 2012 (EIA)

Wells Drilled (Feet per Well) U.S. Average Depth of Crude Oil, Natural Gas, and Dry Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

425

U.S. Average Depth of Crude Oil, Natural Gas, and Dry Exploratory...  

Gasoline and Diesel Fuel Update (EIA)

and Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Crude Oil, Natural Gas, and Dry Exploratory and Developmental Wells Drilled (Feet per Well) Decade Year-0...

426

U.S. Average Depth of Crude Oil Exploratory and Developmental...  

Annual Energy Outlook 2012 (EIA)

and Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Crude Oil Exploratory and Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3...

427

U.S. Average Depth of Crude Oil, Natural Gas, and Dry Developmental...  

Gasoline and Diesel Fuel Update (EIA)

Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Crude Oil, Natural Gas, and Dry Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3...

428

U.S. Average Depth of Crude Oil Exploratory Wells Drilled (Feet ...  

U.S. Energy Information Administration (EIA)

U.S. Average Depth of Crude Oil Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9; 1940's: 4,232 ...

429

U.S. Average Depth of Crude Oil Developmental Wells Drilled ...  

Gasoline and Diesel Fuel Update (EIA)

Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Crude Oil Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6...

430

Efficient Depth of Field Rasterization Using a Tile Test Based on Half-Space Culling  

Science Conference Proceedings (OSTI)

For depth of field (DOF) rasterization, it is often desired to have an efficient tile versus triangle test, which can conservatively compute which samples on the lens that need to execute the sample-in-triangle test. We present a novel test for this, ... Keywords: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and RealismVisible line/surface algorithms, culling, depth of field, rasterization

Tomas Akenine-Mller; Robert Toth; Jacob Munkberg; Jon Hasselgren

2012-02-01T23:59:59.000Z

431

ARM - PI Product - Cloud-Scale Vertical Velocity and Turbulent Dissipation  

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

ProductsCloud-Scale Vertical Velocity and Turbulent ProductsCloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Cloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals Site(s) NSA General Description Time-height fields of retrieved in-cloud vertical wind velocity and turbulent dissipation rate, both retrieved primarily from vertically-pointing, Ka-band cloud radar measurements. Files are available for manually-selected, stratiform, mixed-phase cloud cases observed at the North Slope of Alaska (NSA) site during periods covering the Mixed-Phase Arctic Cloud Experiment (MPACE, late September through early November 2004) and the Indirect and Semi-Direct Aerosol Campaign (ISDAC, April-early May

432

VERTIGO (VERtical Transport In the Global Ocean): A study of particle sources and flux attenuation in the North Pacific  

SciTech Connect

The VERtical Transport In the Global Ocean (VERTIGO) study examined particle sources and fluxes through the ocean's 'twilight zone' (defined here as depths below the euphotic zone to 1000 m). Interdisciplinary process studies were conducted at contrasting sites off Hawaii (ALOHA) and in the NW Pacific (K2) during 3 week occupations in 2004 and 2005, respectively. We examine in this overview paper the contrasting physical, chemical and biological settings and how these conditions impact the source characteristics of the sinking material and the transport efficiency through the twilight zone. A major finding in VERTIGO is the considerably lower transfer efficiency (T{sub eff}) of particulate organic carbon (POC), POC flux 500/150 m, at ALOHA (20%) vs. K2 (50%). This efficiency is higher in the diatom-dominated setting at K2 where silica-rich particles dominate the flux at the end of a diatom bloom, and where zooplankton and their pellets are larger. At K2, the drawdown of macronutrients is used to assess export and suggests that shallow remineralization above our 150 m trap is significant, especially for N relative to Si. We explore here also surface export ratios (POC flux/primary production) and possible reasons why this ratio is higher at K2, especially during the first trap deployment. When we compare the 500 m fluxes to deep moored traps, both sites lose about half of the sinking POC by >4000 m, but this comparison is limited in that fluxes at depth may have both a local and distant component. Certainly, the greatest difference in particle flux attenuation is in the mesopelagic, and we highlight other VERTIGO papers that provide a more detailed examination of the particle sources, flux and processes that attenuate the flux of sinking particles. Ultimately, we contend that at least three types of processes need to be considered: heterotrophic degradation of sinking particles, zooplankton migration and surface feeding, and lateral sources of suspended and sinking materials. We have evidence that all of these processes impacted the net attenuation of particle flux vs. depth measured in VERTIGO and would therefore need to be considered and quantified in order to understand the magnitude and efficiency of the ocean's biological pump.

Buesseler, K.O.; Trull, T.W.; Steinberg, D.K.; Silver, M.W.; Siegel, D.A.; Saitoh, S.-I.; Lamborg, C.H.; Lam, P.J.; Karl, D.M.; Jiao, N.Z.; Honda, M.C.; Elskens, M.; Dehairs, F.; Brown, S.L.; Boyd, P.W.; Bishop, J.K.B.; Bidigare, R.R.

2008-06-10T23:59:59.000Z

433

Non-destructive in-situ method and apparatus for determining radionuclide depth in media  

DOE Patents (OSTI)

A non-destructive method and apparatus which is based on in-situ gamma spectroscopy is used to determine the depth of radiological contamination in media such as concrete. An algorithm, Gamma Penetration Depth Unfolding Algorithm (GPDUA), uses point kernel techniques to predict the depth of contamination based on the results of uncollided peak information from the in-situ gamma spectroscopy. The invention is better, faster, safer, and/cheaper than the current practice in decontamination and decommissioning of facilities that are slow, rough and unsafe. The invention uses a priori knowledge of the contaminant source distribution. The applicable radiological contaminants of interest are any isotopes that emit two or more gamma rays per disintegration or isotopes that emit a single gamma ray but have gamma-emitting progeny in secular equilibrium with its parent (e.g., .sup.60 Co, .sup.235 U, and .sup.137 Cs to name a few). The predicted depths from the GPDUA algorithm using Monte Carlo N-Particle Transport Code (MCNP) simulations and laboratory experiments using .sup.60 Co have consistently produced predicted depths within 20% of the actual or known depth.

Xu, X. George (Clifton Park, NY); Naessens, Edward P. (West Point, NY)

2003-01-01T23:59:59.000Z

434

Experimental investigation on heat transfer and frictional characteristics of vertical upward rifled tube in supercritical CFB boiler  

SciTech Connect

Water wall design is a key issue for supercritical Circulating Fluidized Bed (CFB) boiler. On account of the good heat transfer performance, rifled tube is applied in the water wall design of a 600 MW supercritical CFB boiler in China. In order to investigate the heat transfer and frictional characteristics of the rifled tube with vertical upward flow, an in-depth experiment was conducted in the range of pressure from 12 to 30 MPa, mass flux from 230 to 1200 kg/(m{sup 2} s), and inner wall heat flux from 130 to 720 kW/m{sup 2}. The wall temperature distribution and pressure drop in the rifled tube were obtained in the experiment. The normal, enhanced and deteriorated heat transfer characteristics were also captured. In this paper, the effects of pressure, inner wall heat flux and mass flux on heat transfer characteristics are analyzed, the heat transfer mechanism and the frictional resistance performance are discussed, and the corresponding empirical correlations are presented. The experimental results show that the rifled tube can effectively prevent the occurrence of departure from nucleate boiling (DNB) and keep the tube wall temperature in a permissible range under the operating condition of supercritical CFB boiler. (author)

Yang, Dong; Pan, Jie; Zhu, Xiaojing; Bi, Qincheng; Chen, Tingkuan [State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049 (China); Zhou, Chenn Q. [Department of Mechanical Engineering, Purdue University Calumet, Hammond, IN 46323 (United States)

2011-02-15T23:59:59.000Z

435

A General Method for Fatigue Analysis of Vertical Axis  

E-Print Network (OSTI)

The fatigue life of wind turbine blades that are exposed to the random loading environment of atmospheric winds is described with random data analysis procedures. The incident wind speed and the stresses caused by these winds are expressed in terms of probability density functions, while the fatigue life vs stress level relationship is treated deterministically. This approach uses a "damage density function" to express fatigue damage as a function of wind speed. By examining the constraints on the variables in the damage density expression, some generalizations of the wind turbine fatigue problem are obtained. The area under the damage density function is inversely related to total fatigue life. Therefore, an increase in fatigue life caused by restricted operation in certain wind regimes is readily visualized. An "on parameter", which is the percentage of total time at each wind speed that the turbine actually operates, is introduced for this purpose. An example calculation is presented using data acquired from the DOE 100-kW turbine program. *This work was performed at Sandia National Laboratories and was supported by the US Department of Energy under Contract Number DE-AC04-76DP00789. Acknowledgments The calculations required to produce the figures in this paper would not have been possible without the work of Jerry McNerney and Tim Leonard in developing the AUTOSYM computer simulation, The efforts of Nolan Clark and Ron Davis in collecting data for the DOE 100-kW turbine at the USDA station in Bushland, TX are greatly appreciated. of Vertical Axis Wind Turbine Blades

Paul S. Veers

1983-01-01T23:59:59.000Z

436

Procedures to predict vertical differential soil movement for expansive soils  

E-Print Network (OSTI)

Damage to lightly loaded structures, paving and service piping in areas of expansive clay soils has occurred throughout the world. The cause of this damage has been the inability to accurately model expansive soil movement so that foundations are adequately designed to withstand the movement. The amount and rate of differential soil movement for expansive soils is due to a combination of soil characteristics, namely: suction compression index, unsaturated permeability, and diffusivity. Currently, geotechnical engineers run tests to measure the soil properties required to estimate differential soil movements. However, there seems to be apprehension toward attempting these soil movement calculations due to the perceived complexity of the calculations or a simple lack of understanding of the theory. The procedures delineating the step by step process used to calculate suction profiles and volume strains of expansive soils is presented. These procedures include the methodology to predict soil heave and shrink underneath shallow foundations which generate maximum center lift and maximum edge lift slab distortion modes. The main contributions of this research are: equations and procedures to calculate the equilibrium suction profile and depth to constant suction for a particular soil profile and location, equations to calculate the horizontal velocity flow of water in unsaturated soils, the methodology to predict differential soil movement shortly after a slab has been constructed and before the soil under the slab has reached an equilibrium moisture content, and the procedures to apply differential soil movement theory to soil profiles with shallow foundation design.

Naiser, Donald David

1997-01-01T23:59:59.000Z

437

Depth profiling the optical absorption and thermal reflection coefficient via an analysis based on the method of images (abstract)  

Science Conference Proceedings (OSTI)

The problem of depth profiling optical absorption in a thermally depth variable solid is a problem of direct interest for the analysis of complex structured materials. In this work

J. F. Power

2003-01-01T23:59:59.000Z

438

Importance of Using Observations of Mixing Depths in order to Avoid Large Prediction Errors by a Transport and Dispersion Model  

Science Conference Proceedings (OSTI)

The mixing depth of the boundary layer is an input to most atmospheric transport and dispersion (ATD) models, which obtain mixing depths in one of four ways: 1) observations by radiosondes, sodars, or other devices; 2) simulations by regional or ...

J. M. White; J. F. Bowers; S. R. Hanna; J. K. Lundquist

2009-01-01T23:59:59.000Z

439

Simulation of Mixed Layer Depth in the Northeast Pacific Utilizing Spectral Nudging  

Science Conference Proceedings (OSTI)

A numerical model, the Parallel Ocean Program (POP), is used to run a 46-yr simulation of the North Pacific Ocean beginning in January 1960. The model has 0.25 horizontal resolution and 28 vertical levels, and it employs spectral nudging, which, ...

Shawn M. Donohue; Michael W. Stacey

2011-03-01T23:59:59.000Z

440

ARM: 10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm  

DOE Data Explorer (OSTI)

10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

Rob Newsom; John Goldsmith

Note: This page contains sample records for the topic "true vertical depth" 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

Depth Profiles of Radionuclides Induced in Shielding Concrete of the 12 GeV Proton Accelerator Facility at KEK  

E-Print Network (OSTI)

Depth Profiles of Radionuclides Induced in Shielding Concrete of the 12 GeV Proton Accelerator Facility at KEK

Miura, T; Ishihama, S; Ohotsuka, N; Kunifuda, T

2000-01-01T23:59:59.000Z

442

Design and Analysis of the ITER Vertical Stability Coils  

SciTech Connect

The ITER vertical stability (VS) coils have been developed through the preliminary design phase by Princeton Plasma Physics Laboratory (PPPL). Final design, prototyping and construction will be carried out by the Chinese Participant Team contributing lab, Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). The VS coils are a part of the in-vessel coil systems which include edge localized mode (ELM) coils as well as the VS coils. An overview of the ELM coils is provided in another paper at this conference. 15 The VS design employs four turns of stainless steel jacketed mineral insulated copper (SSMIC) conductors The mineral insulation is Magnesium Oxide (MgO). Joule and nuclear heat is removed by water flowing at 3 m/s through the hollow copper conductor. A key element in the design is that slightly elevated temperatures in the conductor and its support spine during operation impose compressive stresses that mitigate fatigue damage. Away from joints, and break-outs, conductor thermal stresses are low because of the axisymmetry of the winding (there are no corner bends as in the ELM coils).The 120 degree segment joint, and break-out or terminal regions are designed with similar but imperfect constraint compared with the ring coil portion of the VS. The support for the break-out region is made from a high strength copper alloy, CuCrZr. This is needed to conduct nuclear heat to the actively cooled conductor and to the vessel wall. The support "spine" for the ring coil portion of the VS is 316 stainless steel, held to the vessel with preloaded 718 bolts. Lorentz loads resulting from normal operating loads, disruption loads and loads from disruption currents in the support spine shared with vessel, are applied to the VS coil. The transmission of the Lorentz and thermal expansion loads from the "spine" to the vessel rails is via friction augmented with a restraining "lip" to ensure the coil frictional slip is minimal and acceptable. Stresses in the coil, joints, and break-outs are presented. These are compared with static and fatigue allowables. Design for fatigue is much less demanding than for the ELM coils. A total of 30,000 cycles is required for VS design. Loads on the vessel due to the thermal expansion of the coil and spine are significant. Efforts to reduce these by reducing the cross section of the spine have been made but the vessel still must support loads resulting from restraint of thermal expansion.

Peter H. Titus, et. al.

2012-09-06T23:59:59.000Z

443

Daily snow depth measurements from 195 stations in the United States  

SciTech Connect

This document describes a database containing daily measurements of snow depth at 195 National Weather Service (NWS) first-order climatological stations in the United States. The data have been assembled and made available by the National Climatic Data Center (NCDC) in Asheville, North Carolina. The 195 stations encompass 388 unique sampling locations in 48 of the 50 states; no observations from Delaware or Hawaii are included in the database. Station selection criteria emphasized the quality and length of station records while seeking to provide a network with good geographic coverage. Snow depth at the 388 locations was measured once per day on ground open to the sky. The daily snow depth is the total depth of the snow on the ground at measurement time. The time period covered by the database is 1893--1992; however, not all station records encompass the complete period. While a station record ideally should contain daily data for at least the seven winter months (January through April and October through December), not all stations have complete records. Each logical record in the snow depth database contains one station`s daily data values for a period of one month, including data source, measurement, and quality flags.

Allison, L.J. [ed.] [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center; Easterling, D.R.; Jamason, P.; Bowman, D.P.; Hughes, P.Y.; Mason, E.H. [National Oceanic and Atmospheric Administration, Asheville, NC (United States). National Climatic Data Center

1997-02-01T23:59:59.000Z

444

The depth of the oil/brine interface and crude oil leaks in SPR caverns  

Science Conference Proceedings (OSTI)

Monitoring wellhead pressure evolution is the best method of detecting crude oil leaks in SPR caverns while oil/brine interface depth measurements provide additional insight. However, to fully utilize the information provided by these interface depth measurements, a thorough understanding of how the interface movement corresponds to cavern phenomena, such as salt creep, crude oil leakage, and temperature equilibration, as well as to wellhead pressure, is required. The time evolution of the oil/brine interface depth is a function of several opposing factors. Cavern closure due to salt creep and crude oil leakage, if present, move the interface upward. Brine removal and temperature equilibration of the oil/brine system move the interface downward. Therefore, the relative magnitudes of these factors determine the net direction of interface movement. Using a mass balance on the cavern fluids, coupled with a simplified salt creep model for closure in SPR caverns, the movement of the oil/brine interface has been predicted for varying cavern configurations, including both right-cylindrical and carrot-shaped caverns. Three different cavern depths and operating pressures have been investigated. In addition, the caverns were investigated at four different points in time, allowing for varying extents of temperature equilibration. Time dependent interface depth changes of a few inches to a few feet were found to be characteristic of the range of cases studied. 5 refs, 19 figs., 1 tab.

Heffelfinger, G.S.

1991-06-01T23:59:59.000Z

445

Extraction of depth-dependent perturbation factors for silicon diodes using a plastic scintillation detector  

SciTech Connect

Purpose: This work presents the experimental extraction of the perturbation factor in megavoltage electron beams for three models of silicon diodes (IBA Dosimetry, EFD and SFD, and the PTW 60012 unshielded) using a plastic scintillation detector (PSD). Methods: The authors used a single scanning PSD mounted on a high-precision scanning tank to measure depth-dose curves in 6-, 12-, and 18-MeV clinical electron beams. They also measured depth-dose curves using the IBA Dosimetry, EFD and SFD, and the PTW 60012 unshielded diodes. The authors used the depth-dose curves measured with the PSD as a perturbation-free reference to extract the perturbation factors of the diodes. Results: The authors found that the perturbation factors for the diodes increased substantially with depth, especially for low-energy electron beams. The experimental results show the same trend as published Monte Carlo simulation results for the EFD diode; however, the perturbations measured experimentally were greater. They found that using an effective point of measurement (EPOM) placed slightly away from the source reduced the variation of perturbation factors with depth and that the optimal EPOM appears to be energy dependent. Conclusions: The manufacturer recommended EPOM appears to be incorrect at low electron energy (6 MeV). In addition, the perturbation factors for diodes may be greater than predicted by Monte Carlo simulations.

Lacroix, Frederic; Guillot, Mathieu; McEwen, Malcolm; Gingras, Luc; Beaulieu, Luc [Departement de Radio-Oncologie, Centre hospitalier de l'Universite de Montreal (CHUM), 1560 Sherbrooke est, Montreal, Quebec H2L 4M1, Canada and Departement de Physique, Universite de Montreal, Pavillon Roger-Gaudry (D-428), 2900 Boul. Edouard-Montpetit, Montreal, Quebec H3T 1J4 (Canada); Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec G1K 7P4, Quebec, Canada and Departement de Radio-Oncologie, Hotel-Dieu de Quebec, Centre hospitalier universitaire de Quebec (CHUQ), Quebec, Quebec G1R 2J6 (Canada); Ionizing Radiation Standards, Institute for National Measurement Standards, National Research Council (NRC), Ottawa, Ontario K1A 0R6 (Canada); Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec G1K 7P4, Quebec, Canada and Departement de Radio-Oncologie, Hotel-Dieu de Quebec, Centre hospitalier universitaire de Quebec (CHUQ), Quebec, Quebec G1R 2J6 (Canada)

2011-10-15T23:59:59.000Z

446

Vertical Wavenumber Spectra of Gravity Waves in the Martian Atmosphere Obtained from Mars Global Surveyor Radio Occultation Data  

Science Conference Proceedings (OSTI)

Vertical wavenumber spectra of Martian gravity waves were obtained for the altitude range 332 km from temperature profiles acquired by the Mars Global Surveyor (MGS) radio occultation experiments. The spectra, which cover vertical wavelengths ...

Hiroki Ando; Takeshi Imamura; Toshitaka Tsuda

2012-09-01T23:59:59.000Z

447

LEP Center-of-Mass Energies in Presence of Opposite Sign Vertical Dispersion in Bunch-Train Operation  

E-Print Network (OSTI)

LEP Center-of-Mass Energies in Presence of Opposite Sign Vertical Dispersion in Bunch-Train Operation

CERN. Geneva

1995-01-01T23:59:59.000Z

448

In-Depth: Cleantech at the National Labs | Department of Energy  

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

In-Depth: Cleantech at the National Labs In-Depth: Cleantech at the National Labs In-Depth: Cleantech at the National Labs January 7, 2014 - 5:30pm Addthis These solar power collection dishes at Sandia National Labs' National Solar Thermal Test Facility are capable of some of the highest solar to electricity conversion. In January 2008, this technology set a new solar-to-grid system conversion efficiency record of 31.25 percent net efficiency rate; the technology is still available to benefit the U.S. by delivering power at all hours of the day by implementing thermal energy storage. CSP with storage provides important benefits to integrate more renewable energy to our electric power supply by mitigating resource variability and satisfying peak demand after sunset. | Photo courtesy of Sandia National Laboratories.

449

Depth Profile of Uncompensated Spins in an Exchange-Bias System  

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

Depth Profile of Uncompensated Spins in an Exchange-Bias System Print Depth Profile of Uncompensated Spins in an Exchange-Bias System Print The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is currently a subject of intense research because of its applications in the magnetic recording and read-head industries. An international collaboration headed by researchers from the University of California, San Diego, has used resonant x-ray scattering and polarized-neutron reflectometry to determine the depth-dependent magnetization in an exchange-biased sample. These results provide atomic-level insights into the mechanism of exchange bias, specifically the involvement of mutual interactions between two kinds of uncompensated spins in the antiferromagnet and spins in the ferromagnet.

450

Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP,  

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

Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP, Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP, MISR, and MODIS Marchand, Roger Pacific Northwest National Laboratory Ackerman, Thomas Pacific Northwest National Laboratory Category: Cloud Properties Joint histograms of Cloud Top Height (CTH) and Optical Depth (OD) derived by the International Satellite Cloud Climatology Project (ISCCP) are being widely used by the climate modeling community in evaluating global climate models. Similar joint histograms of CTH-OD are now being produced by the NASA Multi-angle Imaging Spectro-Radiometer (MISR) and Moderate Resolution Imaging Spectroradiometer (MODIS) instruments. There are notable differences in the histograms being produced by these three projects. In this poster we analyze some of the differences and discuss how the

451

Depth Profile of Uncompensated Spins in an Exchange-Bias System  

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

Depth Profile of Uncompensated Spins in an Exchange-Bias System Print Depth Profile of Uncompensated Spins in an Exchange-Bias System Print The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is currently a subject of intense research because of its applications in the magnetic recording and read-head industries. An international collaboration headed by researchers from the University of California, San Diego, has used resonant x-ray scattering and polarized-neutron reflectometry to determine the depth-dependent magnetization in an exchange-biased sample. These results provide atomic-level insights into the mechanism of exchange bias, specifically the involvement of mutual interactions between two kinds of uncompensated spins in the antiferromagnet and spins in the ferromagnet.

452

An Exploratory Analysis of the Relationship Between Organizational and Institutional Factors Shaping the Assimilation of Vertical Standards  

Science Conference Proceedings (OSTI)

Vertical standards describe products and services, define data formats and structures, and formalize and encode business processes for specific industries. Vertical standards enable end-to-end computing, provide greater visibility of the organization's ... Keywords: Standards, Standards Assimilation, Standards Diffusion, Vertical Standards, XML

T. Ravichandran; Rubn A. Mendoza

2011-01-01T23:59:59.000Z

453

Vertical Dispersion from Surface and Elevated Releases: An Investigation of a Non-Gaussian Plume Model  

Science Conference Proceedings (OSTI)

The vertical diffusion of a passive tracer released from surface and elevated sources in a neutrally stratified boundary layer has been studied by comparing field and laboratory experiments with a non-Gaussian K-theory model that assumes power-...

Michael J. Brown; S. Pal Arya; William H. Snyder

1993-03-01T23:59:59.000Z

454

Sensitivity of Simulated Climate to Horizontal and Vertical Resolution in the ECHAM5 Atmosphere Model  

Science Conference Proceedings (OSTI)

The most recent version of the Max Planck Institute for Meteorology atmospheric general circulation model, ECHAM5, is used to study the impact of changes in horizontal and vertical resolution on seasonal mean climate. In a series of Atmospheric ...

E. Roeckner; R. Brokopf; M. Esch; M. Giorgetta; S. Hagemann; L. Kornblueh; E. Manzini; U. Schlese; U. Schulzweida

2006-08-01T23:59:59.000Z

455

Principal Component Analysis of Vertical Profiles of Q1 and Q2 in the Tropics  

Science Conference Proceedings (OSTI)

Rotated Principal component analysis (PCA) is applied to the combined vertical profiles of apparent heat source Q1 and apparent moisture sink Q2 from both disturbed and undisturbed periods of the Australian summer monsoon season. The data ...

G. David Alexander; George S. Young; David V. Ledvina

1993-02-01T23:59:59.000Z

456

Use of vertical slip flow and flooding models in LOCA analysis  

SciTech Connect

Vertical slip flow and flooding models, which have been incorporated in a version of the RELAP4 computer code by Aerojet Nuclear Company have led to significant improvements in modeling nuclear reactor coolant system phenomena during postulated large and small break loss-of-coolant accidents. The vertical slip flow model computes the separated fluid component velocities and directions at vertical flow junctions. Use of the slip model allows the energy transfer between volumes to be based on individual liquid and vapor component flows rather than on the net junction flow. Continuity and momentum equations are unaffected by the addition of slip. The vertical flow slip model logic is based on the assumption that gravity forces dominate causing slip between phases. 7 references (auth)

Fischer, S.R.

1975-01-01T23:59:59.000Z

457

Comparison of Radiosonde and GCM Vertical Temperature Trend Profiles: Effects of Dataset Choice and Data Homogenization  

Science Conference Proceedings (OSTI)

In comparisons of radiosonde vertical temperature trend profiles with comparable profiles derived from selected Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) general circulation models (GCMs) driven by major ...

John R. Lanzante; Melissa Free

2008-10-01T23:59:59.000Z

458

External Influences on Hurricane Intensity. Part II: Vertical Structure and Response of the Hurricane Vortex  

Science Conference Proceedings (OSTI)

The vertical structure of the interaction of Hurricane Elena (1985) with a baroclinic wave was evaluated using analyses from the European Centre for Medium Range Weather Forecasting. During the period of interaction, azimuthal eddies produced a ...

John Molinari; David Vollaro

1990-08-01T23:59:59.000Z

459

Particle Image Velocimetry Study on the Stripe Formation in Vertically Vibrated Granules  

E-Print Network (OSTI)

Recently, granules under vertical vibrations receive many attentions due to their importance in theoretical research and engineering application. In this paper, a two-dimensional Particle Image Velocimetry (PIV) system was ...

Deng, Rensheng

460

The Downwind Spread of an Initially Vertical Column of Particles in a Sheared Environment  

Science Conference Proceedings (OSTI)

The effects of particle fallspeeds on the downwind spread of initially vertical columns or curtains are examined in environments with wind shear. Sets of equations describing the column width as a function of time and distance below column top ...

Ronald E. Stewart; John D. Marwitz

1982-08-01T23:59:59.000Z

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


461

Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow  

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

Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow Control Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow Control Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow Control PI Name: Kenneth Jansen PI Email: jansenke@colorado.edu Institution: University of Colorado Allocation Program: INCITE Allocation Hours at ALCF: 40 Million Year: 2012 Research Domain: Engineering The use of fuel-and its accompanying costs-has become an increasing concern in many industries. Researchers are examining the issue of fuel reduction in commercial jet aircraft from the perspective of redesign. By redesigning the vertical tail of a commercial jet, they hope to reduce jet fuel use by 0.5%, resulting in annual savings of $300 million. Using -synthetic commercial jet aircraft, the team will perform a series

462

ARM - PI Product - SGP and TWP (Manus) Ice Cloud Vertical Velocities  

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

ProductsSGP and TWP (Manus) Ice Cloud Vertical ProductsSGP and TWP (Manus) Ice Cloud Vertical Velocities Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : SGP and TWP (Manus) Ice Cloud Vertical Velocities 1997.01.01 - 2010.12.31 Site(s) SGP TWP General Description Daily netcdf-files of ice-cloud dynamics observed at the ARM sites at SGP (Jan1997-Dec2010) and Manus (Jul1999-Dec2010). The files include variables at different time resolution (10s, 20min, 1hr). Profiles of radar reflectivity factor (dbz), Doppler velocity (vel) as well as retrieved vertical air motion (V_air) and reflectivity-weighted particle terminal fall velocity (V_ter) are given at 10s, 20min and 1hr resolution. Lower level clouds are removed, however a multi-layer flag is included.

463

Numerical Solution of the Vertical Structure Equation in the Normal Mode Method  

Science Conference Proceedings (OSTI)

In a diagnostic study by expanding global data in normal mode functions, Kasahara and Puri found that for zonal wavenumber one, even the seventh vertical mode (the highest mode they presented) contains about 50% of the energy of the external ...

Y. K. Sasaki; L. P. Chang

1985-05-01T23:59:59.000Z

464

Organization of Tropical Convection in Low Vertical Wind Shears: The Role of Water Vapor  

Science Conference Proceedings (OSTI)

A modeling study is conducted to gain insight into the factors that control the intensity and organization of tropical convection, and in particular to examine if organization occurs in the absence of factors such as vertical wind shear or ...

Adrian M. Tompkins

2001-03-01T23:59:59.000Z

465

Vertical Air Motion from T-REX Radiosonde and Dropsonde Data  

Science Conference Proceedings (OSTI)

The primary goal of this study is to explore the potential for estimating the vertical velocity (VV) of air from the surface to the stratosphere, using widely available radiosonde and dropsonde data. The rise and fall rates of radiosondes and ...

Junhong Wang; Jianchun Bian; William O. Brown; Harold Cole; Vanda Grubii?; Kate Young

2009-05-01T23:59:59.000Z

466

A Surface Flux Parameterization Based on the Vertically Averaged Turbulence Kinetic Energy  

Science Conference Proceedings (OSTI)

A new bulk transfer formulation for the surface turbulent fluxes of momentum, heat, and moisture has been developed by using the square root of the vertically averaged turbulent kinetic energy (TKE) in the atmospheric boundary layer as a velocity ...

Changan Zhang; David A. Randall; Chin-Hoh Moeng; Mark Branson; Kerry A. Moyer; Qing Wang

1996-11-01T23:59:59.000Z

467

Effect of Vertical Wind Shear on Numerically Simulated Multicell Storm Structure  

Science Conference Proceedings (OSTI)

A strictly two-dimensional cloud model was used to gauge the effect of vertical wind shear on the mature phase behavior of model-simulated multicellular storms, extending the previous work of the authors. We specifically examined the propagation ...

Robert G. Fovell; Yoshi Ogura

1989-10-01T23:59:59.000Z

468

Characterization of Vertical Velocity and Drop Size Distribution Parameters in Widespread Precipitation at ARM Facilities  

Science Conference Proceedings (OSTI)

Extended, high-resolution measurements of vertical air motion and median volume drop diameter D0 in widespread precipitation from three diverse Atmospheric Radiation Measurement Program (ARM) locations [Lamont, Oklahoma, Southern Great Plains site ...

Scott E. Giangrande; Edward P. Luke; Pavlos Kollias

2012-02-01T23:59:59.000Z

469

Vertical Temperature Profiles at Maximum Entropy Production with a Net Exchange Radiative Formulation  

Science Conference Proceedings (OSTI)

Like any fluid heated from below, the atmosphere is subject to vertical instability which triggers convection. Convection occurs on small time and space scales, which makes it a challenging feature to include in climate models. Usually sub-grid ...

Corentin Herbert; Didier Paillard; Brengre Dubrulle

470

Cloud and Water Vapor Feedbacks in a Vertical Energy-Balance Model with Maximum Entropy Production  

Science Conference Proceedings (OSTI)

A vertically one-dimensional model is developed with cloud fraction constrained by the maximum entropy production (MEP) principle. The model reasonably reproduces the global mean climate with its surface temperature, radiation and heat fluxes, ...

Biao Wang; Teruyuki Nakajima; Guangyu Shi

2008-12-01T23:59:59.000Z

471

Correlation Coefficients between Horizontally and Vertically Polarized Returns from Ground Clutter  

Science Conference Proceedings (OSTI)

Characteristics of the magnitude and phase of correlation coefficients between horizontally and vertically polarized returns from ground clutter echoes are quantified by analyzing histograms obtained with an 11-cm wavelength weather surveillance ...

Dusan S. Zrni?; Valery M. Melnikov; Alexander V. Ryzhkov

2006-03-01T23:59:59.000Z

472

Seasonality of Vertical Structure in Radar-Observed Precipitation over Southern Switzerland  

Science Conference Proceedings (OSTI)

Operational radar data reveal that precipitation systems occurring on the southern side of the Alps near Locarno, Switzerland, follow seasonal patterns of vertical reflectivity structure. Storms occurring in summer are more convective than winter ...

James V. Rudolph; Katja Friedrich

2013-02-01T23:59:59.000Z

473

Quadratic Galerkin Finite Element Schemes for the Vertical Discretization of Numerical Forecast Models  

Science Conference Proceedings (OSTI)

A finite element scheme with second-order basis functions is introduced for vertical discretization using a spectral model for horizontal discretization. The basis functions are required to be continuous, and no assumption is made concerning the ...

J. Steppeler

1987-08-01T23:59:59.000Z

474

The Influence of Whitecapping Waves on the Vertical Structure of Turbulence in a Shallow Estuarine Embayment  

Science Conference Proceedings (OSTI)

The vertical distribution of the turbulent kinetic energy dissipation rate was measured using an array of four acoustic Doppler velocimeters in the shallow embayment of Grizzly Bay, San Francisco Bay, California. Owing to the combination of wind ...

Nicole L. Jones; Stephen G. Monismith

2008-07-01T23:59:59.000Z

475

A Simple Model of Climatological Rainfall and Vertical Motion Patterns over the Tropical Oceans  

Science Conference Proceedings (OSTI)

A simple model is developed that predicts climatological rainfall, vertical motion, and diabatic heating profiles over the tropical oceans given the sea surface temperature (SST), using statistical relationships deduced from the 40-yr ECMWF Re-...

Larissa E. Back; Christopher S. Bretherton

2009-12-01T23:59:59.000Z

476

Entropy in Climate Models. Part I: Vertical Structure of Atmospheric Entropy Production  

Science Conference Proceedings (OSTI)

The vertical atmospheric entropy structure has been investigated using one-dimensional radiativeconvective models. A method for evaluating radiation entropy is proposed. In the models, the entropy radiation is dealt with in a way parallel to the ...

J. Li; Petr Chlek; G. B. Lesins

1994-06-01T23:59:59.000Z

477

Optimization planning systems and their implementation and application in vertically integrated oil companies  

Science Conference Proceedings (OSTI)

The approaches to planning of activities of a vertically integrated oil company by using optimization systems are considered. Development, implementation, and support of such systems are discussed. These problems fall under the APS (Advanced Planning ...

A. S. Khokhlov; A. I. Konnov; A. E. Zel'Din

2012-04-01T23:59:59.000Z

478

Horizontal Wavenumber Spectra of Vertical Vorticity and Horizontal Divergence in the Upper Troposphere and Lower Stratosphere  

Science Conference Proceedings (OSTI)

The author shows that the horizontal two-point correlations of vertical vorticity and the associated vorticity wavenumber spectrum can be constructed from previously measured velocity structure functions in the upper troposphere and lower ...

Erik Lindborg

2007-03-01T23:59:59.000Z

479

The Vertical Structure of TOGA COARE Convection. Part II: Modulating Influences and Implications for Diabatic Heating  

Science Conference Proceedings (OSTI)

The temporal variability of western Pacific warm pool convection, especially its vertical structure, is examined in this study. Distributions of convective echo top heights and 30-dBZ contour heights have been produced from shipboard radar data ...

Charlotte A. DeMott; Steven A. Rutledge

1998-09-01T23:59:59.000Z

480

Horizontal Divergence and Vertical Velocity Retrievals from Doppler Radar and Wind Profiler Observations  

Science Conference Proceedings (OSTI)

Vertical motion profiles can be diagnosed with the mass continuity equation using horizontal divergence fields derived from various single-Doppler radar techniques such as EVAD (extended velocity-azimuth display), CEVAD (concurrent extended ...

Robert Cifelli; Steven A. Rutledge; Dennis J. Boccippio; Thomas Matejka

1996-10-01T23:59:59.000Z

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


481

The Coupling of Vertical Velocity and Signal Power Observed with the SOUSY VHF Radar  

Science Conference Proceedings (OSTI)

The perturbations to the static stability (and hence to the radar reflectivity) and to the velocity in a vertically propagating gravity wave are correlated, and the sign of the correlation depends on whether the wave is propagating upward or ...

G. D. Nastrom; R. Rster; G. Schmidt

1998-01-01T23:59:59.000Z

482

HIRS-AMTS Satellite Sounding System TestTheoretical and Empirical Vertical Resolving Power  

Science Conference Proceedings (OSTI)

Theoretical and empirical analyses of the vertical resolving power of the High resolution Infrared Radiation Sounder (HIRS) and the Advanced Moisture and Temperature Sounder (AMTS) is carried out. First, the infrared transmittance weighting ...

Owen E. Thompson

1982-10-01T23:59:59.000Z

483

Estimation of Mesoscale Vertical Derivatives of Potential Temperature and Density from Hydrographic Data  

Science Conference Proceedings (OSTI)

This study was motivated by the need to combine vertical derivative estimates of either potential density or temperature with SOFAR float data for estimating vortex stretching in the main (700 m) and lower thermocline (1300 m) of the Local ...

Arthur J. Mariano

1989-12-01T23:59:59.000Z

484

Vertical Mixing and the Temperature and Wind Structure of the Tropical Tropopause Layer  

Science Conference Proceedings (OSTI)

We show that vertical mixing can lead to significant momentum and heat fluxes in the tropical tropopause layer (TTL) and that these momentum and heat fluxes can force large climatological temperature and zonal wind changes in the TTL. We present ...

Thomas J. Flannaghan; Stephan Fueglistaler

485

Empirical Models of the Eddy Heat Flux and Vertical Shear on Short Time Scales  

Science Conference Proceedings (OSTI)

The relationship between the eddy heat flux and vertical shear in the extratropical atmosphere is studied by developing various linear stochastic models fitted to the observed January and July Northern Hemispheric data. Models are univariate or ...

Steven J. Ghan

1984-02-01T23:59:59.000Z

486

The Vertical Structure and Development of the ENSO Anomaly Mode during 19791989  

Science Conference Proceedings (OSTI)

The latest two Pacific basinwide warm episodes (198283 and 198687) exhibit some common features in their development and vertical structure. These features are examined by multivariate empirical orthogonal function analysis of the interannual ...

Bin Wang

1992-04-01T23:59:59.000Z

487

A Simple Model of Climatological Rainfall and Vertical Motion Patterns over the Tropical Oceans  

E-Print Network (OSTI)

A simple model is developed that predicts climatological rainfall, vertical motion, and diabatic heating profiles over the tropical oceans given the sea surface temperature (SST), using statistical relationships deduced ...

Back, Larissa E.

488

The Vertical Structure of the Eddy Diffusivity and the Equilibration of the Extratropical Atmosphere  

Science Conference Proceedings (OSTI)

Observations suggest that the time- and zonal-mean state of the extratropical atmosphere adjusts itself such that the so-called criticality parameter (which relates the vertical stratification to the horizontal temperature gradient) is close to ...

Malte Jansen; Raffaele Ferrari

2013-05-01T23:59:59.000Z

489

Estimates of the Seasonal Mean Vertical Velocity Fields of the Extratropical Northern Hemisphere  

Science Conference Proceedings (OSTI)

Wintertime and summertime mean 500 mb vertical velocity fields for the extratropical Northern Hemisphere are calculated by several methods from general circulation statistics compiled from National Meteorological Center (NMC) operational analyses ...

Glenn H. White

1983-07-01T23:59:59.000Z

490

Asymmetric Hurricane Boundary Layer Structure from Dropsonde Composites in Relation to the Environmental Vertical Wind Shear  

Science Conference Proceedings (OSTI)

This study investigates the asymmetric structure of the hurricane boundary layer in relation to the environmental vertical wind shear in the inner core region. Data from 1878 GPS dropsondes deployed by research aircraft in 19 hurricanes are ...

Jun A. Zhang; Robert F. Rogers; Paul D. Reasor; Eric W. Uhlhorn; Frank D. Marks Jr.

2013-11-01T23:59:59.000Z

491

The Vertical Structure of the Eddy Diffusivity and the Equilibration of the Extratropical Atmosphere  

E-Print Network (OSTI)

Observations suggest that the time- and zonal-mean state of the extratropical atmosphere adjusts itself such that the so-called criticality parameter (which relates the vertical stratification to the horizontal temperature ...

Jansen, Malte

492

Vertical Motions Estimated Using Data from a Single Station and a Form of the Adiabatic Method  

Science Conference Proceedings (OSTI)

The so-called adiabatic method for estimating vertical air motions under isentropic flow conditions can be used with wind and temperature data from a single station. With the advent of radio acoustic sounding systems, wind and temperature ...

G. D. Nastrom; J. M. Warnock

1994-01-01T23:59:59.000Z

493

Vertical Wind Shear Influences on Tropical Cyclone Formation and Intensification during TCM-92 and TCM-93  

Science Conference Proceedings (OSTI)

Vertical wind shears between 200 and 850 mb are calculated from operational analyses and special interactive analyses for Tropical Storm Steve during the Tropical Cyclone Motion (TCM-93) field experiment and for Typhoon Omar at the end of the TCM-...

Russell L. Elsberry; Richard A. Jeffries

1996-07-01T23:59:59.000Z

494

A Field Study of Reflectivity and ZR Relations Using Vertically Pointing Radars and Disdrometers  

Science Conference Proceedings (OSTI)

Observations from a 16-month field study using two vertically pointing radars and a disdrometer at Wallops Island are analyzed to examine the consistency of the multi-instrument observations with respect to reflectivity and ZR relations. The ...

Ali Tokay; Peter Hartmann; Alessandro Battaglia; Kenneth S. Gage; Wallace L. Clark; Christopher R. Williams

2009-06-01T23:59:59.000Z

495

Vertical Velocity and Microphysical Distributions Related to Rapid Intensification in a Simulation of Hurricane Dennis (2005)  

Science Conference Proceedings (OSTI)

A 1-km Weather Research and Forecasting model simulation of Hurricane Dennis was used to identify precursors in vertical velocity and latent heating distributions to rapid intensification (RI). Although the observed structure qualitatively ...

Greg M. McFarquhar; Brian F. Jewett; Matthew S. Gilmore; Stephen W. Nesbitt; Tsung-Lin Hsieh

2012-12-01T23:59:59.000Z

496

Estimating the Vertical Component of Water Velocity from Measurements Collected with a Free-fall Vehicle  

Science Conference Proceedings (OSTI)

Estimated of the vertical component of water velocity are made with measurements of the pressure-change rate and rotation rate recorded by the free-fall vehicle Cartesian diver (CD). Using buoyancy control, this device moves alternately up and ...

David C. Jacobs; Charles S. Cox

1992-02-01T23:59:59.000Z

497

Characteristics of Vertical Velocity Cores in Different Convective Systems Observed over Gadanki, India  

Science Conference Proceedings (OSTI)

The Indian mesospherestratospheretroposphere (MST) radar measurements during the passage of 60 convective systems are used to study the vertical air velocity (w) characteristics of tropical convection. The up- and downdraft cores and various ...

K. N. Uma; T. Narayana Rao

2009-03-01T23:59:59.000Z

498

Effects of Vertical Wind Shear and Storm Motion on Tropical Cyclone Rainfall Asymmetries Deduced from TRMM  

Science Conference Proceedings (OSTI)

Vertical wind shear and storm motion are two of the most important factors contributing to rainfall asymmetries in tropical cyclones (TCs). Global TC rainfall structure, in terms of azimuthal distribution and asymmetries relative to storm motion, ...

Shuyi S. Chen; John A. Knaff; Frank D. Marks Jr.

2006-11-01T23:59:59.000Z

499

Design of a Nonhydrostatic Atmospheric Model Based on a Generalized Vertical Coordinate  

Science Conference Proceedings (OSTI)

The isentropic system of equations has particular advantages in the numerical modeling of weather and climate. These include the elimination of the vertical velocity in adiabatic flow, which simplifies the motion to a two-dimensional problem and ...

Michael D. Toy; David A. Randall

2009-07-01T23:59:59.000Z

500

Numerical Experiments on Consistent Horizontal and Vertical Resolution for Atmospheric Models and Observing Systems  

Science Conference Proceedings (OSTI)

Simple numerical experiments are performed in order to determine the effects of inconsistent combinations of horizontal and vertical resolution in both atmospheric models and observing systems. In both cases, we find that inconsistent spatial ...

Michael S. Fox-Rabinovitz; Richard S. Lindzen

1993-01-01T23:59:59.000Z