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1

Wide band stepped frequency ground penetrating radar  

DOE Patents [OSTI]

A wide band ground penetrating radar system (10) embodying a method wherein a series of radio frequency signals (60) is produced by a single radio frequency source (16) and provided to a transmit antenna (26) for transmission to a target (54) and reflection therefrom to a receive antenna (28). A phase modulator (18) modulates those portion of the radio frequency signals (62) to be transmitted and the reflected modulated signal (62) is combined in a mixer (34) with the original radio frequency signal (60) to produce a resultant signal (53) which is demodulated to produce a series of direct current voltage signals (66) the envelope of which forms a cosine wave shaped plot (68) which is processed by a Fast Fourier Transform unit 44 into frequency domain data (70) wherein the position of a preponderant frequency is indicative of distance to the target (54) and magnitude is indicative of the signature of the target (54).

Bashforth, Michael B. (Buellton, CA); Gardner, Duane (Santa Maria, CA); Patrick, Douglas (Santa Maria, CA); Lewallen, Tricia A. (Ventura, CA); Nammath, Sharyn R. (Santa Barbara, CA); Painter, Kelly D. (Goleta, CA); Vadnais, Kenneth G. (Alexandria, VA)

1996-01-01T23:59:59.000Z

2

Comparison of M46 broad-band visible data with ELF data from the Sprites `96 campaign  

SciTech Connect (OSTI)

Lightning data, recorded with satellite optical sensors, are compared with extremely low frequency (ELF) and Schumann resonance (SR) data from the Sprites `96 Campaign. The satellite data are broad-band visible events recorded by the M46 satellite payload. Full width at half maximum and optical tail durations from the satellite data are compared with ELF slow tail features and Schumann resonance spectral color. In addition, continuing current estimates were computed for several positive cloud-to-ground (PCG) strokes. These estimates were derived using relative optical intensities from the satellite data and a peak current measurement from National Lightning Detection Network (NLDN) data. This assessment of M46 lightning data supports correlations between visible and ELF signatures. More data must be studied for compelling proof.

Mitchell, E.A.

1997-10-01T23:59:59.000Z

3

Band-engineered SrTiO{sub 3} nanowires for visible light photocatalysis  

SciTech Connect (OSTI)

We have theoretically investigated the structural, electronic, and optical properties of perovskite SrTiO{sub 3} nanowires for use in visible light photocatalytic applications using pseudopotential density-functional theory calculations. The electronic structure calculations show that the band gap is modified in the SrTiO{sub 3} nanowires compared with that of the bulk. For TiO{sub 2}-terminated nanowires, the mid-band states induced by the combination of oxygen and strontium atoms on the surface lead to a shift in the valence band toward the conduction band without interference from the edge of the conduction band, which reduces the band gap. On the contrary, the electronic states induced by the combination of oxygen and strontium atoms on the surface of SrO-terminated nanowires lead to a shift in the conduction band toward the valence band. The calculated optical results indicate that the absorption edge of the nanowires shift towards the red-light region. These theoretical results suggest that perovskite SrTiO{sub 3} nanowires are promising candidates for use in visible light photocatalytic processes such as solar-assisted water splitting reactions.

Fu, Q.; He, T.; Li, J. L.; Yang, G. W. [State Key Laboratory of Optoelectronic Materials and Technologies, Institute of Optoelectronic and Functional Composite Materials, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong (China)

2012-11-15T23:59:59.000Z

4

Oblique Aerial & Ground Visible Band & Thermographic Imaging | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(Utility Company)ReferencesNuiqsut,Place,Oakmont,Obion County, Tennessee:

5

Category:Oblique Aerial & Ground Visible Band & Thermographic Imaging |  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: EnergyBostonFacilityCascadeJump to:Lists Jump to: Jump to:page?NeutronOpen

6

Ultrathin metal-semiconductor-metal resonator for angle invariant visible band transmission filters  

SciTech Connect (OSTI)

We present transmission visible wavelength filters based on strong interference behaviors in an ultrathin semiconductor material between two metal layers. The proposed devices were fabricated on 2?cm?×?2?cm glass substrate, and the transmission characteristics show good agreement with the design. Due to a significantly reduced light propagation phase change associated with the ultrathin semiconductor layer and the compensation in phase shift of light reflecting from the metal surface, the filters show an angle insensitive performance up to ±70°, thus, addressing one of the key challenges facing the previously reported photonic and plasmonic color filters. This principle, described in this paper, can have potential for diverse applications ranging from color display devices to the image sensors.

Lee, Kyu-Tae; Seo, Sungyong; Yong Lee, Jae; Jay Guo, L., E-mail: guo@umich.edu [Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, Michigan 48109 (United States)

2014-06-09T23:59:59.000Z

7

Exploring Visible-Light-Responsive Photocatalysts for Water Splitting Based on Novel Band-gap Engineering Strategies  

E-Print Network [OSTI]

Chapter 4 Boron Carbides as Efficient, Metal-Free, Visible-and transition metals, the boron carbide products werex Chapter Boron Carbides as Efficient, Metal-free, Visible-

Liu, Jikai

2013-01-01T23:59:59.000Z

8

Visible-light absorption and large band-gap bowing of GaN1-xSbx from first principles  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Applicability of the Ga(Sbx)N1-x alloys for practical realization of photoelectrochemical water splitting is investigated using first-principles density functional theory incorporating the local density approximation and generalized gradient approximation plus the Hubbard U parameter formalism. Our calculations reveal that a relatively small concentration of Sb impurities is sufficient to achieve a significant narrowing of the band gap, enabling absorption of visible light. Theoretical results predict that Ga(Sbx)N1-x alloys with 2-eV band gaps straddle the potential window at moderate to low pH values, thus indicating that dilute Ga(Sbx)N1-x alloys could be potential candidates for splitting water under visible light irradiation.

Sheetz, R. Michael; Richter, Ernst; Andriotis, Antonis N.; Lisenkov, Sergey; Pendyala, Chandrashekhar; Sunkara, Mahendra K.; Menon, Madhu

2011-08-01T23:59:59.000Z

9

Ground-based All-sky Mid-infrared and Visible Imagery for Purposes of Characterizing Cloud Properties  

SciTech Connect (OSTI)

This paper describes the All Sky Infrared Visible Analyzer (ASIVA), a multi-purpose visible and infrared sky imaging and analysis instrument whose primary functionality is to provide radiometrically calibrated imagery in the mid-infrared (mid-IR) atmospheric window. This functionality enables the determination of diurnal hemispherical cloud fraction (HCF) and estimates of sky/cloud temperature from which one can derive estimates of cloud emissivity and cloud height. This paper describes the calibration methods and performance of the ASIVA instrument with particular emphasis on data products being developed for the meteorological community. Data presented here were collected during a field campaign conducted at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Climate Research Facility from May 21 to July 27, 2009. The purpose of this campaign was to determine the efficacy of IR technology in providing reliable nighttime HCF data. Significant progress has been made in the analysis of the campaign data over the past several years and the ASIVA has proven to be an excellent instrument for determining HCF as well as several other important cloud properties.

Klebe, Dimitri; Blatherwick, R. D.; Morris, Victor R.

2014-02-24T23:59:59.000Z

10

A dual polarized x-band pulse radar for ground based electromagnetic scattering experiment / by Allen William White  

E-Print Network [OSTI]

) 218 219 221 Table C-7 XMTR/RCVR (T/R) Enclosure Wire List (50 - pin D connector) ~pa e 223 LIST OF FIGURES ~Fi ure X-Band Radar Scatterometer ~pa e I-2 Basic Block Diagram of the X-Band Radar Scatterometer X-Band Radar Block Diagram...) Produced by the SPST PIN diode Switch Modulator: fo' = 10. 000 GHz 77 ~Fi ure IV-15 ~pa e Graph of the Output Power Deviation of the CW Gunn Oscillator (Model No. MA 86130) as a Function of Temperature ~ ~ ~ ~ ~ 79 IV-16 V-1 V-2 V-3 V-4 V-5 V...

White, Allen William

2012-06-07T23:59:59.000Z

11

Exciton Bose condensation : the ground state of an electron-hole gas II. Spin states, screening and band structure effects  

E-Print Network [OSTI]

1083 Exciton Bose condensation : the ground state of an electron-hole gas II. Spin states, incorporant la condensation de Bose des paires électron-trou. Nous étudions en détail la limite diluée, et incorporates Bose condensation of bound electron-hole pairs. We discuss in detail the low density limit

Boyer, Edmond

12

Use Remote Sensing Data (selected visible and infrared spectrums...  

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

Use Remote Sensing Data (selected visible and infrared spectrums) to locate high temperature ground anomalies in Colorado. Confirm heat flow potential with on-site surveys to drill...

13

The visibility complex made visibly simple an introduction to 2D structures of visibility  

E-Print Network [OSTI]

. Then a sweeping algorithm that can build the complex in O(mlog(n)) where n is the size of the visibility graph when a line becomes tangent to three objects. This is shown in the video. The complex is build usingThe visibility complex made visibly simple an introduction to 2D structures of visibility Fr

Durand, Frédo

14

ARM - Measurement - Visibility  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch Relatedcontentcharacteristics ARMgovMeasurementsVisibility ARM

15

Ground Water Ground Sky Sky Water Vegetation Ground Vegetation Water  

E-Print Network [OSTI]

Bear Snow Vegetation RhinoWater Vegetation Ground Water Ground Sky Sky Rhino Water Vegetation Ground Vegetation Water Rhino Water Vegetation Ground Rhino Water Rhino Water Ground Ground Vegetation Water Rhino Vegetation Rhino Vegetation Ground Rhino Vegetation Ground Sky Rhino Vegetation Ground Sky

Chen, Tsuhan

16

Visible light photocatalytic activity in nitrogen-doped TiO{sub 2} nanobelts  

SciTech Connect (OSTI)

We present a comprehensive experimental and theoretical study of the electronic properties and photocatalytic activity of nitrogen-doped anatase TiO{sub 2} nanobelts. UV-visible spectra show enhanced absorption in the visible light range for nitrogen-doped nanobelts compared to the pristine sample. The nitrogen-doped nanobelts exhibit improved photocatalytic activity compared to the pristine sample upon visible light irradiation. Furthermore, the incorporation of nitrogen introduces localized states in the band gap.

De Nyago Tafen; Lewis, James P. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States); Wang Jin; Wu Nianqiang [Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia 26506 (United States)

2009-03-02T23:59:59.000Z

17

A versatile femtosecond stimulated Raman spectroscopy setup with tunable pulses in the visible to near infrared  

SciTech Connect (OSTI)

We demonstrate a versatile and efficient setup to perform femtosecond stimulated Raman spectroscopy (FSRS). Technical innovations are implemented to achieve the wavelength tunability for both the picosecond narrowband Raman pump pulse and femtosecond broadband Raman probe pulse. Using a simplified one-grating scheme in a home-built second harmonic bandwidth compressor followed by a two-stage noncollinear optical parametric amplifier, we tune the Raman pump pulse from ca. 480 to 750?nm. To generate the suitable Raman probe pulse in tandem, we rely on our recently demonstrated broadband up-converted multicolor array technique that readily provides tunable broadband laser sidebands across the visible to near-infrared range. This unique setup has unparalleled flexibility for conducting FSRS. We measure the ground-state Raman spectra of a cyclohexane standard using tunable pump-probe pairs at various wavelengths across the visible region. The best spectral resolution is ?12?cm{sup ?1}. By tuning the pump wavelength closer to the electronic absorption band of a photoacid pyranine in water, we observe the pre-resonantly enhanced Raman signal. The stimulated Raman gain of the 1627?cm{sup ?1} mode is increased by over 15 times.

Zhu, Liangdong [Department of Physics, Oregon State University, Corvallis, Oregon 97331 (United States); Liu, Weimin [Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 (United States); Fang, Chong, E-mail: Chong.Fang@oregonstate.edu [Department of Physics, Oregon State University, Corvallis, Oregon 97331 (United States); Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 (United States)

2014-07-28T23:59:59.000Z

18

Sustained water cleavage by visible light  

SciTech Connect (OSTI)

Sustained cleavage of water by 4 quanta of visible light is achieved in aqueous solutions by using a bifunctional redox catalyst composed of Pt and RuO/sub 2/ cosupported by colloidal TiO/sub 2/ particles. A photochemical model system containing Ru(bpy)/sub 3//sup 2 +/ as a sensitizer and methyl viologen (MV/sup 2 +/) as an electron relay is used to test the effect of catalyst composition, sensitizer concentration, pH, and temperature on the efficiency of light-induced water decomposition. Electron relay free systems also exhibit high photoactivity. Direct band gap irradiation by uv light leads to efficient water cleavage in the absence of sensitizer and relay.

Borgarello, E.; Kiwi, J.; Pelizzetti, E.; Visca, M.; Graetzel, M.

1981-10-21T23:59:59.000Z

19

Rotational bands with identical transition energies in actinide nuclei  

SciTech Connect (OSTI)

We point out the existence of ground-state rotational bands with identical transition energies (up to spin 8{h bar}) in {sup 240}Pu, {sup 244}Cm, {sup 246}Cm, and {sup 250}Cf. The corresponding transitions in the ground-state bands of {sup 236}U and {sup 238}U have identical energies (within {similar to}2 keV) up to spin 24{h bar}. These features are very similar to those recently observed for superdeformed bands in the mass-150 and mass-190 regions and suggest that the phenomenon of identical bands is not restricted to superdeformed bands.

Ahmad, I.; Carpenter, M.P.; Chasman, R.R.; Janssens, R.V.F.; Khoo, T.L. (Argonne National Laboratory, Argonne, Illinois (USA))

1991-09-01T23:59:59.000Z

20

3D Visibility made visibly simple: an introduction to the Visibility Skeleton  

E-Print Network [OSTI]

.g. lighting sim­ ulation), the limits of umbra and penumbra, etc. Previ­ ous approaches have used coarse visible from a vertex of the scene and the limits of umbra and penumbra between two polygons. 1 are the limits of umbra and penumbra together with back­ projections which encode the topological aspect

Durand, Frédo

Note: This page contains sample records for the topic "ground visible band" 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

Smoke and Visible Emissions (New Mexico)  

Broader source: Energy.gov [DOE]

This rule establishes controls on smoke and visible emissions from certain sources.  This rule is not intended to preempt any more stringent controls on smoke and visible emissions provided in any...

22

The Swift-UVOT ultraviolet and visible grism calibration  

E-Print Network [OSTI]

We present the calibration of the Swift UVOT grisms, of which there are two, providing low-resolution field spectroscopy in the ultraviolet and optical bands respectively. The UV grism covers the range 1700-5000 Angstrom with a spectral resolution of 75 at 2600 Angstrom for source magnitudes of u=10-16 mag, while the visible grism covers the range 2850-6600 Angstrom with a spectral resolution of 100 at 4000 Angstrom for source magnitudes of b=12-17 mag. This calibration extends over all detector positions, for all modes used during operations. The wavelength accuracy (1-sigma) is 9 Angstrom in the UV grism clocked mode, 17 Angstrom in the UV grism nominal mode and 22 Angstrom in the visible grism. The range below 2740 Angstrom in the UV grism and 5200 Angstrom in the visible grism never suffers from overlapping by higher spectral orders. The flux calibration of the grisms includes a correction we developed for coincidence loss in the detector. The error in the coincidence loss correction is less than 20%. The...

Kuin, N P M; Breeveld, A A; Page, M J; James, C; Lamoureux, H; Mehdipour, M; Still, M; Yershov, V; Brown, P J; Carter, M; Mason, K O; Kennedy, T; Marshall, F; Roming, P W A; Siegel, M; Oates, S; Smith, P J; De Pasquale, M

2015-01-01T23:59:59.000Z

23

Visibility with Multiple Reflections Boris Aronov 1  

E-Print Network [OSTI]

â?? 1. A lower bound of \\Omega\\Gamma/ n=k \\Gamma \\Theta(1)) 2k ) is also established which matches to geometric optics, so that not only the issue of direct (straight­line) visibility, but also of visibility with reflection naturally occur here. Indeed, there is a large literature on geometric optics (such as [24, 12, 5

Dey, Tamal Krishna

24

Visible Spectrum Incandescent Selective Emitter  

SciTech Connect (OSTI)

The purpose of the work performed was to demonstrate the feasibility of a novel bi-layer selective emitter. Selective emitters are incandescent radiant bodies with emissivities that are substantially larger in a selected part of the radiation spectrum, thereby significantly shifting their radiated spectral distribution from that of a blackbody radiating at the same temperature. The major research objectives involved answering the following questions: (1) What maximum VIS/NIR radiant power and emissivity ratios can be attained at 2650 K? (2) What is the observed emitter body life and how does its performance vary with time? (3) What are the design tradeoffs for a dual heating approach in which both an internally mounted heating coil and electrical resistance self-heating are used? (4) What are the quantitative improvements to be had from utilizing a bi-layer emitter body with a low emissivity inner layer and a partially transmissive outer layer? Two approaches to obtaining selective emissivity were investigated. The first was to utilize large optical scattering within an emitter material with a spectral optical absorption that is much greater within the visible spectrum than that within the NIR. With this approach, an optically thick emitter can radiate almost as if optically thin because essentially, scattering limits the distance below the surface from which significant amounts of internally generated radiation can emerge. The performance of thin emitters was also investigated (for optically thin emitters, spectral emissivity is proportional to spectral absorptivity). These emitters were fabricated from thin mono-layer emitter rods as well as from bi-layer rods with a thin emitter layer mounted on a substrate core. With an initially estimated energy efficiency of almost three times that of standard incandescent bulbs, a number of energy, economic and environmental benefits such as less energy use and cost, reduced CO{sub 2} emissions, and no mercury contamination was initially projected. The work performed provided answers to a number of important questions. The first is that, with the investigated approaches, the maximum sustained emitter efficiencies are about 1.5 times that of a standard incandescent bulb. This was seen to be the case for both thick and thin emitters, and for both mono-layer and bi-layer designs. While observed VIS/NIR ratios represent improvements over standard incandescent bulbs, it does not appear sufficient to overcome higher cost (i.e. up to five times that of the standard bulb) and ensure commercial success. Another result is that high temperatures (i.e. 2650 K) are routinely attainable without platinum electrodes. This is significant for reducing material costs. A novel dual heating arrangement and insulated electrodes were used to attain these temperatures. Another observed characteristic of the emitter was significant grain growth soon after attaining operating temperatures. This is an undesirable characteristic that results in substantially less optical scattering and spectral selectivity, and which significantly limits emitter efficiencies to the values reported. Further work is required to address this problem.

Sonsight Inc.

2004-04-30T23:59:59.000Z

25

Visible spectrometer utilizing organic thin film absorption  

E-Print Network [OSTI]

In this thesis, I modeled and developed a spectrometer for the visible wavelength spectrum, based on absorption characteristics of organic thin films. The device uses fundamental principles of linear algebra to reconstruct ...

Tiefenbruck, Laura C. (Laura Christine)

2004-01-01T23:59:59.000Z

26

VISIBILITY ALGORITHMS 8.1. INTRODUCTION  

E-Print Network [OSTI]

from e if it would be entirely illuminated by a fluorescent light bulb whose extent matched e. Avis(x) is called the point visibility polygon for x; it may be imagined as the region illuminated by a light bulb

O'Rourke, Joseph

27

Emission of Visible Light by Hot Dense Metals  

E-Print Network [OSTI]

HIFAN 1761 EMISSION OF VISIBLE LIGHT BY HOT DENSE METALS ByDE-AC52-07NA27344. HI FAN Emission of Visible Light by HotABSTRACT We consider the emission of visible light by hot

More, R.M.

2010-01-01T23:59:59.000Z

28

The Pennsylvania State University Marching Blue Band Blue Band Office  

E-Print Network [OSTI]

The Pennsylvania State University Marching Blue Band Press Kit Blue Band Office 101 Blue Band Director vcc2@psu.edu orb1@psu.edu gad157@psu.edu (814) 865 - 3982 #12;History of the Blue Band The Marching Blue Band numbers 310 members which includes: 260 instrumentalists, 34 silks, 14 Touch of Blue

Maroncelli, Mark

29

Conservation notes BIRD BANDING  

E-Print Network [OSTI]

--,?1 (' Conservation notes BIRD BANDING The Hows and Whys Three Pintail ducks from North America Stewart L,. Udall, Sectetaty FISH AND WILDLIFE SERVICE #12;#12;'"'^^ ''^ "^ CONSERVATION NOTES BIRD

30

Relating productivity to visibility and lighting  

SciTech Connect (OSTI)

The problem of determining the appropriate light levels for visual tasks is a cost-benefit problem. Existing light level recommendations seriously underweight the importance of economic factors. Furthermore, the relative importance of the visibility factors in determining the optimal light levels appears inconsistent with the importance of these factors in determining visibility and visual performance. It is shown that calculations based on acuities give a lower limit of 100 to 200 lux for cost-effective light levels for office tasks. Upper limits are calculated from correlations of task performance to visibility levels. Visibility levels become progressively insensitive to luminance as luminance increases. Average power densities above 100 watts/m/sup 2/ are cost-effective only when visibility is very low. However, there is a 3-to-10 times larger increase in benefits from improving contrast or contrast sensitivity than from using more than 10 watts/m/sup 2/. Contrast or contrast sensitivity can be improved by using forms with larger print, using xerographic copy instead of carbon or mimeo, making sure office workers have the right eyeglasses, or even by transferring workers with visual problems to less visually demanding tasks. Once these changes are made it is no longer cost-effective to use more than 10 watts/m/sup 2/. This conclusion raises serious questions about recommendations that lead to greater than about 10 watts/m/sup 2/ of installed lighting for general office work.

Clear, R.; Berman, S.

1982-01-01T23:59:59.000Z

31

Predaceous Ground Beetles  

E-Print Network [OSTI]

Predaceous Ground Beetles Caterpillar Hunters and Bombardier Beetles Rick Minzenmayer, Extension Agent-IPM Chris Sansone, Extension Entomologist Texas Cooperative Extension genus Calosoma, a brightly colored ground beetle. Some species are called...

Sansone, Chris; Minzenmayer, Rick

2003-06-30T23:59:59.000Z

32

Ground Turkey Stroganoff Ingredients  

E-Print Network [OSTI]

Ground Turkey Stroganoff Ingredients: 8 ounces egg noodles, uncooked 1 pound ground turkey 1 onion. Meanwhile, brown ground turkey and onions in non stick skillet until meat is no longer pink and onions cup of egg noodles on plate, top with 1/2 cup of turkey mixture. Equipment: Knife Cutting board

Liskiewicz, Maciej

33

Cooking with Ground Pork  

E-Print Network [OSTI]

to thaw. Even when cooked, pork that has been thawed at room temperature can make you sick. Cooking ground pork safely For dishes that contain ground pork, cook the pork before mixing it with other ingredients. How to store cooked ground pork Leftover... dishes made with ground pork should be stored in a covered dish in the refrigerator right away to prevent spoilage. Use it within 3 days. Reheat foods with ground pork until they are steaming hot, bubbling, or at 165 degrees. Other uses Use cooked...

Anding, Jenna

2008-12-09T23:59:59.000Z

34

Ground Water Management Act (Virginia)  

Broader source: Energy.gov [DOE]

Under the Ground Water Management Act of 1992, Virginia manages ground water through a program regulating the withdrawals in certain areas called Ground Water Management Areas (GWMA). Currently,...

35

Broad Band Photon Harvesting Biomolecules for Photovoltaics  

E-Print Network [OSTI]

We discuss the key principles of artificial photosynthesis for photovoltaic energy conversion. We demonstrate these principles by examining the operation of the so-called "dye sensitized solar cell" (DSSC) - a photoelectrochemical device which simulates the charge separation process across a nano-structured membrane that is characteristic of natural systems. These type of devices have great potential to challenge silicon semiconductor technology in the low cost, medium efficiency segment of the PV market. Ruthenium charge transfer complexes are currently used as the photon harvesting components in DSSCs. They produce a relatively broad band UV and visible response, but have long term stability problems and are expensive to manufacture. We suggest that a class of biological macromolecules called the melanins may be suitable replacements for the ruthenium complexes. They have strong, broad band absorption, are chemically and photochemically very stable, can be cheaply and easily synthesized, and are also bio-available and bio-compatible. We demonstrate a melanin-based regenerative solar cell, and discuss the key properties that are necessary for an effective broad band photon harvesting system.

P. Meredith; B. J. Powell; J. Riesz; R. Vogel; D. Blake; I. Kartini; G. Will; S. Subianto

2004-06-04T23:59:59.000Z

36

Nitrogen-sensitized dual phase titanate/titania for visible-light driven phenol degradation  

SciTech Connect (OSTI)

A dual-phase material (DP-160) comprising hydrated titanate (H{sub 2}Ti{sub 3}O{sub 7}{center_dot}xH{sub 2}O) and anatase (TiO{sub 2}) was synthesized in a low-temperature one-pot process in the presence of triethylamine (TEA) as the N-source. The unique structure exhibits strong visible light absorption. The chromophore is linked to Ti-N bonds derived from both surface sensitization and sub-surface (bulk) doping. From transmission electron microscope (TEM) and textural studies by N{sub 2} physisorption, the composite exists as mesoporous particles with a grain size of {approx}20 nm and mean pore diameter of 3.5 nm, responsible for the high surface area ({approx}180 m{sup 2}/g). DP-160 demonstrated photocatalytic activity in the degradation of phenol under visible light ({lambda}>420 nm). The activity of the composite was further enhanced by a small addition (0.001 M) of H{sub 2}O{sub 2}, which also gave rise to some visible light activity in the control samples. This effect is believed to be associated with the surface peroxo-titanate complex. GC-MS analyses showed that the intermediate products of phenol degradation induced by visible light irradiation of DP-160 did not differ from those obtained by UV (band-gap) irradiation of TiO{sub 2}. The overall performance of the composite is attributed to efficient excitation via inter-band states (due to N-doping), surface sensitization, improved adsorptive properties of aromatic compounds due to the N-carbonaceous overlayer, and the presence of heterojunctions that are known to promote directional charge transfer in other mixed-phase titanias like Degussa P25. - graphical abstract: Nitrogen-sensitized dual phase titanate/titania photocatalyst showing extended visible light absorption and efficient photocatalytic degradation of phenol. Highlights: Black-Right-Pointing-Pointer Low temperature one-pot synthesis of visible light active dual phase photocatalyst. Black-Right-Pointing-Pointer The dual phase consists of nanoscale titanate and anatase titania phases. Black-Right-Pointing-Pointer The photocatalyst displays high activity in degrading phenol under visible light. Black-Right-Pointing-Pointer Mechanisms for the sensitization to visible light are considered.

Cheng, Yu Hua; Subramaniam, Vishnu P.; Gong, Dangguo; Tang, Yuxin [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)] [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore); Highfield, James, E-mail: James_Highfield@ices.a-star.edu.sg [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore)] [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore); Pehkonen, Simo O. [Chemical Engineering Program, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi (United Arab Emirates)] [Chemical Engineering Program, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi (United Arab Emirates); Pichat, Pierre [Photocatalyse et Environnement, CNRS/Ecole Centrale de Lyon (STMS), 69134 Ecully Cedex (France)] [Photocatalyse et Environnement, CNRS/Ecole Centrale de Lyon (STMS), 69134 Ecully Cedex (France); Schreyer, Martin K. [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore)] [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore); Chen, Zhong, E-mail: aszchen@ntu.edu.sg [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)] [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

2012-12-15T23:59:59.000Z

37

Properties of the rotational bands in {sup 161}Er  

SciTech Connect (OSTI)

High-spin states in {sup 161}Er have been studied experimentally using the {sup 150}Nd({sup 16}O,5n) reaction at a beam energy of 86 MeV. The 5/2{sup +}[642], 3/2{sup -}[521], and 11/2{sup -}[505] bands are extended up to high-spin states, and particularly the {alpha}=-1/2 branch of the ground state 3/2{sup -}[521] band is revised significantly. The relatively enhanced E1 transitions from the 3/2{sup -}[521] band to the 5/2{sup +}[642] band are observed. The band properties are analyzed within the framework of a triaxial particle-rotor model, and near-prolate shape and triaxial deformation are proposed to the 3/2{sup -}[521] and 5/2{sup +}[642] bands, respectively. Signature inversion occurs in the 3/2{sup -}[521] band after the band crossing in {sup 161}Er, and the systematics of the signature inversion associated with the 3/2{sup -}[521] configuration are discussed. By analyzing the properties of the relatively enhanced E1 transitions, it is found that the R(E1/E2) values show angular momentum dependence before the band crossing, and these enhanced E1 transitions could be attributed to octupole softness.

Chen, L.; Zhou, X. H.; Wang, S. T.; Zhang, N. T.; Zhou, H. B.; Li, G. S.; Wang, H. X.; Ding, B. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Graduate University of Chinese Academy of Sciences, Beijing 100049 (China); Zhang, Y. H.; Zheng, Y.; Liu, M. L.; Ma, F.; Fang, Y. D.; Hua, W.; Guo, S.; Qiang, Y. H.; Lei, X. G.; Guo, Y. X. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Zhu, L. H.; Wu, X. G. [China Institute of Atomic Energy, Beijing 102413 (China)

2011-03-15T23:59:59.000Z

38

Substation grounding programs  

SciTech Connect (OSTI)

This document is a users manual and applications guide for the software package SGA. This package comprises four computer programs, namely SOMIP, SMECC, SGSYS, and TGRND. The first three programs are analysis models which are to be used in the design process of substation grounding systems. The fourth program, TGRND, is an analysis program for determining the transient response of a grounding system. This report, Volume 3, is a users manual and an installation and validation manual for the computer program SGSYS (Substation Grounding SYStem Analysis Program). This program analyzes the substation ground field given the total electric current injected into the ground field and the design of the grounding system. Standard outputs of the program are (1) total ground resistance, (2) step voltage, (3) touch voltage, (4) voltages on a grid of points, (5) voltage profile along straight lines, (6) transfer voltages, (7) ground potential rise, (8) body currents, (9) step voltage profile along straight lines, and (10) touch voltage profile along straight lines. This program can be utilized in an interactive or batch mode. In the interactive mode, the user defines the grounding system geometry, soil parameters, and output requests interactively, with the use of a user friendly conversational program. The users manual describes data requirements and data preparation procedures. An appendix provides forms which facilitate data collection procedures. The installation and validation manual describes the computer files which make up the program SGSYS and provides a test case for validation purposes.

Meliopoulos, A.P.S. (Georgia Inst. of Tech., Atlanta, GA (United States). Electric Power Lab.)

1992-05-01T23:59:59.000Z

39

Cooking with Ground Beef  

E-Print Network [OSTI]

This fact sheet describes the nutritional value and safe storage of ground beef, a commodity food. It also offers food preparation ideas....

Anding, Jenna

2008-12-09T23:59:59.000Z

40

A study of the band envelopes of the 2900 A system of sulphur dioxide  

E-Print Network [OSTI]

Parameters with their Corresponding D(A " B) ~ ~ ~ ~ ~ 0 2) LIST OF FIGURES Figure Page Bands Located a$ 33&340. 7 cm. and 32 ' 879 ' 9 orna ~ & ~ & ~ ~ ~ ~ ~ ~ 8 Bands Near the Origin of the 2900 R System, ~ ~ ~ , 9 Graph of hV vs& Ordinal Numbers... with overlapping bands arising from low-lying excited vibrational levels of the ground state Only two bands~ whose heads are -1 located at 32, 879. 9 and 33, 340. 7 cm. , aze clear enough for a rotational analysis. These bands have sub-heads at 32, 895. 7 -1...

Cesani, Fernando A

1960-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

Human Contrast Threshold and Astronomical Visibility  

E-Print Network [OSTI]

The standard visibility model in light pollution studies is the formula of Hecht (1947), as used e.g. by Schaefer (1990). However it is applicable only to point sources and is shown to be of limited accuracy. A new visibility model is presented for uniform achromatic targets of any size against background luminances ranging from zero to full daylight, produced by a systematic procedure applicable to any appropriate data set (e.g Blackwell (1946)), and based on a simple but previously unrecognized empirical relation between contrast threshold and adaptation luminance. The scotopic luminance correction for variable spectral radiance (colour index) is calculated. For point sources the model is more accurate than Hecht's formula and is verified using telescopic data collected at Mount Wilson by Bowen (1947), enabling the sky brightness at that time to be determined. The result is darker than the calculation by Garstang (2004), implying that light pollution grew more rapidly in subsequent decades than has been sup...

Crumey, Andrew

2014-01-01T23:59:59.000Z

42

State visibility in Q-bit space  

E-Print Network [OSTI]

We study by comparison the structure of singlet type states in Q-bit space in the light of quantum and classical paradigms. It is shown that only the classical paradigm implies a variation in the visibility of correlation coefficients, that has been observed in fact in experiments. We conclude that Q-bit space in not a appropriate venue for an EPR test of quantum completeness.

A. F. Kracklauer

2007-03-04T23:59:59.000Z

43

Ground State Quantum Computation  

E-Print Network [OSTI]

We formulate a novel ground state quantum computation approach that requires no unitary evolution of qubits in time: the qubits are fixed in stationary states of the Hamiltonian. This formulation supplies a completely time-independent approach to realizing quantum computers. We give a concrete suggestion for a ground state quantum computer involving linked quantum dots.

Ari Mizel; M. W. Mitchell; Marvin L. Cohen

1999-08-11T23:59:59.000Z

44

Substation grounding programs  

SciTech Connect (OSTI)

This document is a users manual and applications guide for the software package SGA. This package comprises four computer programs, namely SOMIP, SMECC, SGSYS, and TGRND. The first three programs are analysis models which are to be used in the design process of substation grounding systems. The fourth program, TGRND, is an analysis program for determining the transient response of a grounding system. It can be used to compute transient ground potential rise due to lightning or switching, and the ground impedance (i.e. resistance and reactance) at specified frequencies. This report, Volume 4, is a users manual and an installation and validation manual for the computer program TGRND (Transient GRouNDing System Analysis Program). This program computes transient ground potential rise resulting from lightning, switching, or other transient electric currents injected to a grounding system. The program also computes the impedance (i.e. resistance and reactance) of a grounding system as a function of frequency. This program can be utilized in an interactive or batch mode. The users manual describes data requirements and data preparation procedures. The installation and validation manual describes the computer files which make up the program TGRND and provides a test case for validation purposes.

Meliopoulos, A.P.S. (Georgia Inst. of Tech., Atlanta, GA (United States). Electric Power Lab.)

1992-05-01T23:59:59.000Z

45

Banded electromagnetic stator core  

DOE Patents [OSTI]

A stator core for an electromagnetic pump includes a plurality of circumferentially adjoining groups of flat laminations disposed about a common centerline axis and collectively defining a central bore and a discontinuous outer perimeter, with adjacent groups diverging radially outwardly to form V-shaped gaps. An annular band surrounds the groups and is predeterminedly tensioned to clamp together the laminations, and has a predetermined flexibility in a radial direction to form substantially straight bridge sections between the adjacent groups. 5 figs.

Fanning, A.W.; Gonzales, A.A.; Patel, M.R.; Olich, E.E.

1996-06-11T23:59:59.000Z

46

Banded electromagnetic stator core  

DOE Patents [OSTI]

A stator core for an electromagnetic pump includes a plurality of circumferentially adjoining groups of flat laminations disposed about a common centerline axis and collectively defining a central bore and a discontinuous outer perimeter, with adjacent groups diverging radially outwardly to form V-shaped gaps. An annular band surrounds the groups and is predeterminedly tensioned to clamp together the laminations, and has a predetermined flexibility in a radial direction to form substantially straight bridge sections between the adjacent groups. 5 figures.

Fanning, A.W.; Gonzales, A.A.; Patel, M.R.; Olich, E.E.

1994-04-05T23:59:59.000Z

47

Intrinsic nature of visible-light absorption in amorphous semiconducting oxides  

SciTech Connect (OSTI)

To enlighten microscopic origin of visible-light absorption in transparent amorphous semiconducting oxides, the intrinsic optical property of amorphous InGaZnO{sub 4} is investigated by considering dipole transitions within the quasiparticle band structure. In comparison with the crystalline InGaZnO{sub 4} with the optical gap of 3.6 eV, the amorphous InGaZnO{sub 4} has two distinct features developed in the band structure that contribute to significant visible-light absorption. First, the conduction bands are down-shifted by 0.55 eV mainly due to the undercoordinated In atoms, reducing the optical gap between extended states to 2.8 eV. Second, tail states formed by localized oxygen p orbitals are distributed over ?0.5 eV near the valence edge, which give rise to substantial subgap absorption. The fundamental understanding on the optical property of amorphous semiconducting oxides based on underlying electronic structure will pave the way for resolving instability issues in recent display devices incorporating the semiconducting oxides.

Kang, Youngho; Song, Hochul; Han, Seungwu, E-mail: hansw@snu.ac.kr [Department of Materials Science and Engineering, Seoul National University, Seoul 151-755 (Korea, Republic of); Nahm, Ho-Hyun [Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-747 (Korea, Republic of); Department of Physics and Astronomy, Seoul National University, Seoul 151-747 (Korea, Republic of); Jeon, Sang Ho; Cho, Youngmi [CAE Team, Samsung Display Co., Ltd, 95 Samsung 2-ro, Giheung-gu, Youngin-City, Gyeonggi-Do 446-711 (Korea, Republic of)

2014-03-01T23:59:59.000Z

48

Band crossing in a shears band of {sup 108}Cd  

SciTech Connect (OSTI)

The level lifetimes have been measured for a shears band of {sup 108}Cd that exhibits band crossing. The observed level energies and B(M1) rates have been successfully described by a semiclassical geometric model based on shear mechanism. In this geometric model, the band crossing in the shears band has been described as the reopening of the angle between the blades of a shear.

Roy, Santosh; Datta, Pradip; Pal, S.; Chattopadhyay, S.; Bhattacharya, S.; Goswami, A.; Jain, H. C.; Joshi, P. K.; Bhowmik, R. K.; Kumar, R.; Muralithar, S.; Singh, R. P.; Madhavan, N.; Rao, P. V. Madhusudhana [S. N. Bose National Centre for Basic Sciences. Block JD, Sector III, Saltlake City, Kolkata 700098 (India); iThemba Labs, Post Office Box 722, Somerset West 7129 (South Africa); Saha Institute of Nuclear Physics, 1/AF Bidhannager Kolkata, 700 064 (India); Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005 (India); Inter University Accelerator Center, Aruna Asaf Ali Marg, New Delhi 110 067 (India); Department of Physics, Andra University, Visakhapatnam 530 003 (India)

2010-05-15T23:59:59.000Z

49

Seeing solar on campus : a visible photovoltaic installation on campus  

E-Print Network [OSTI]

This paper presents a methodology for selecting a site on the MIT campus for a visible solar photovoltaic installation. Visibility, solar exposure, advertising potential, aesthetics, interactivity and direct or important ...

Guarda, Daniel Jair Alves

2006-01-01T23:59:59.000Z

50

Visible and near infrared reflectances measured from laboratory ice clouds  

E-Print Network [OSTI]

Visible and near infrared reflectances measured from laboratory ice clouds Brian Barkey* and K. N present laboratory results of the 0:68 m visible (VIS) and 1:617 m near infrared (NIR) reflectances for the remote sensing of thin cirrus clouds on the basis of visible (VIS) and near infrared (NIR) channels

Liou, K. N.

51

A Model of Visible QCD Axion  

E-Print Network [OSTI]

We pursue a class of visible axion models where the axion mass is enhanced by strong dynamics in a mirrored copy of the Standard Model in the line of the idea put forward by Rubakov. In particular, we examine the consistency of the models with laboratory, astrophysical, and cosmological constraints. As a result, viable parameter regions are found, where the mass of the axion is of $O(100)$ MeV or above while the Peccei-Quinn breaking scale is at around $10^{3\\mbox{-}5}$ GeV.

Fukuda, Hajime; Ibe, Masahiro; Yanagida, Tsutomu T

2015-01-01T23:59:59.000Z

52

Qubit transfer between photons at telecom and visible wavelengths in a slow-light atomic medium  

E-Print Network [OSTI]

We propose a method that enables efficient conversion of quantum information frequency between different regions of spectrum of light based on recently demonstrated strong parametric coupling between two narrow-band single-photon pulses propagating in a slow-light atomic medium [1]. We show that an input qubit at telecom wavelength is transformed into another at visible domain in a lossless and shape-conserving manner while keeping the initial quantum coherence and entanglement. These transformations can be realized with a quantum efficiency close to its maximum value.

A. Gogyan

2009-12-08T23:59:59.000Z

53

A visible light-sensitive tungsten carbide/tungsten trioxde composite photocatalyst  

SciTech Connect (OSTI)

A photocatalyst composed of tungsten carbide (WC) and tungsten oxide (WO{sub 3}) has been prepared by the mechanical mixing of each powder. Its photocatalytic activity was evaluated by the gaseous isopropyl alcohol decomposition process. The photocatalyst showed high visible light photocatalytic activity with a quantum efficiency of 3.2% for 400-530 nm light. The photocatalytic mechanism was explained by means of enhanced oxygen reduction reaction due to WC, which may serve as a multielectron reduction catalyst, as well as the photogeneration of holes in the valence band of WO{sub 3}.

Kim, Young-ho [Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904 (Japan); Irie, Hiroshi [Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan); Hashimoto, Kazuhito [Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904 (Japan); Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

2008-05-05T23:59:59.000Z

54

Substation grounding programs  

SciTech Connect (OSTI)

This document is a users manual and applications guide for the software package SGA. This package comprises four computer programs, namely SOMIP, SMECC, SGSYS, and TGRND. The first three programs are analysis models which are to be used in the design process of substation grounding systems. The fourth program, TGRND, is an analysis program for determining the transient response of a grounding system. This report, Volume 2, is a users manual and an installation and validation manual for the computer program SMECC (Substation Maximum Earth Current Computation Program). This program analyzes the electric current distribution among grounded structures inside and outside a substation for different fault conditions. The fault conditions are automatically selected by the program, or they may be specified by the user, or both. The fault condition resulting in maximum substation earth current is identified and reported. Data requirements for this program are: ground impedance, transformer data, transmission line data, transmission line grounding impedances, etc. The program provides four types of standard outputs: (1) a report of voltages and current flow in the unfaulted system, (2) a brief report of the maximum ground potential rise (worst fault condition), (3) a summary report of all fault conditions which have been analyzed by the program, and (4) a detailed report of voltages and current flow for a selected set of fault conditions.

Meliopoulos, A.P.S. (Georgia Inst. of Tech., Atlanta, GA (United States). Electric Power Lab.)

1992-05-01T23:59:59.000Z

55

IMPLEMENTING GROUND SOURCE HEAT PUMP AND GROUND LOOP HEAT EXCHANGER  

E-Print Network [OSTI]

IMPLEMENTING GROUND SOURCE HEAT PUMP AND GROUND LOOP HEAT EXCHANGER MODELS IN THE ENERGYPLUS #12;ii IMPLEMENTING GROUND SOURCE HEAT PUMP AND GROUND LOOP HEAT EXCHANGER MODELS IN THE ENERGYPLUS............................................................... 2 1.3. Overview of the Parameter Estimation Water-to-Water Heat Pump Model ........... 5 1

56

Nanoantennas for visible and infrared radiation  

E-Print Network [OSTI]

Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light with nanoscale matter by their ability to efficiently link propagating and spatially localized optical fields. This ability unlocks an enormous potential for applications ranging from nanoscale optical microscopy and spectroscopy over solar energy conversion, integrated optical nanocircuitry, opto-electronics and density-ofstates engineering to ultra-sensing as well as enhancement of optical nonlinearities. Here we review the current understanding of optical antennas based on the background of both well-developed radiowave antenna engineering and the emerging field of plasmonics. In particular, we address the plasmonic behavior that emerges due to the very high optical frequencies involved and the limitations in the choice of antenna materials and geometrical parameters imposed by nanofabrication. Finally, we give a brief account of the current status of the field and the major established and emerging lines of inves...

Biagioni, Paolo; Hecht, Bert

2011-01-01T23:59:59.000Z

57

Visible light surface emitting semiconductor laser  

DOE Patents [OSTI]

A vertical-cavity surface-emitting laser is disclosed comprising a laser cavity sandwiched between two distributed Bragg reflectors. The laser cavity comprises a pair of spacer layers surrounding one or more active, optically emitting quantum-well layers having a bandgap in the visible which serve as the active optically emitting material of the device. The thickness of the laser cavity is m .lambda./2n.sub.eff where m is an integer, .lambda. is the free-space wavelength of the laser radiation and n.sub.eff is the effective index of refraction of the cavity. Electrical pumping of the laser is achieved by heavily doping the bottom mirror and substrate to one conductivity-type and heavily doping regions of the upper mirror with the opposite conductivity type to form a diode structure and applying a suitable voltage to the diode structure. Specific embodiments of the invention for generating red, green, and blue radiation are described.

Olbright, Gregory R. (Boulder, CO); Jewell, Jack L. (Bridgewater, NJ)

1993-01-01T23:59:59.000Z

58

Resonant Visible Light Modulation with Graphene  

E-Print Network [OSTI]

Fast modulation and switching of light at visible and near-infrared (vis-NIR) frequencies is of utmost importance for optical signal processing and sensing technologies. No fundamental limit appears to prevent us from designing wavelength-sized devices capable of controlling the light phase and intensity at gigaherts (and even terahertz) speeds in those spectral ranges. However, this problem remains largely unsolved, despite recent advances in the use of quantum wells and phase-change materials for that purpose. Here, we explore an alternative solution based upon the remarkable electro-optical properties of graphene. In particular, we predict unity-order changes in the transmission and absorption of vis-NIR light produced upon electrical doping of graphene sheets coupled to realistically engineered optical cavities. The light intensity is enhanced at the graphene plane, and so is its absorption, which can be switched and modulated via Pauli blocking through varying the level of doping. Specifically, we explor...

Yu, Renwen; de Abajo, F Javier Garcia

2015-01-01T23:59:59.000Z

59

A NEW SCHEME FOR ESTIMATING THE DEGREE OF SPACE WEATHERING THROUGH VISIBLE MULTIBAND SPECTROSCOPY USING AN ECAS-TYPE FILTER SYSTEM SUCH AS HAYABUSA  

E-Print Network [OSTI]

-cho, Mizusawa City, Iwate 023-0861, Japan. Introduction: Visible multiband spectroscopy us- ing ground laser at 5 and 15 mJ in energy as a space-weathering simulation [1] at Mizusawa Astrogeodynamics]. Spectral transmittance data of Hayabusa/AMICA filters were taken from [3]. Space-Weathering Indices: It has

Hiroi, Takahiro

60

Substation grounding programs  

SciTech Connect (OSTI)

This document is a users manual and applications guide for the software package SGA. This package comprises four computer programs, namely SOMIP, SMECC, SGSYS, and TGRND. The first three programs are analysis models which are to be used in the design process of substation grounding systems. The fourth program, TGRND, is an analysis program for determining the transient response of a grounding system. This report, Volume 5, is an applications guide of the three computer programs. SOMIP, SMECC, and SGSYS, for the purpose of designing a safe substation grounding system. The applications guide utilizes four example substation grounding systems for the purpose of illustrating the application of the programs, SOMIP, SMECC, and SGSYS. The examples are based on data provided by four contributing utilities, namely, Houston Lighting and Power Company, Southern Company Services, Puget Sound Power and Light Company, and Arizona Public Service Company. For the purpose of illustrating specific capabilities of the computer programs, the data have been modified. As a result, the final designs of the four systems do not necessarily represent actual grounding system designs by these utilities. The example system 1 is a 138 kV/35 kV distribution substation. The example system 2 is a medium size 230 kV/115 kV transmission substation. The third example system is a generation substation while the last is a large 525 kV/345 kV/230 kV transmission substation. The four examples cover most of the practical problems that a user may encounter in the design of substation grounding systems.

Meliopoulos, A.P.S. (Georgia Inst. of Tech., Atlanta, GA (United States). Electric Power Lab.)

1992-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

Composition, Mineralogy, and Porosity of Multiple Asteroid Systems from Visible and Near-infrared Spectral Data  

E-Print Network [OSTI]

We provide a taxonomic and compositional characterization of Multiple Asteroid Systems (MASs) located in the main belt (MB) using visible and near-infrared (0.45-2.5 um) spectral data of 42 MB MASs. The mineralogical analysis is applied to determine meteorite analogs for the MASs, which, in turn, are applied to the MAS density measurements of Marchis et al. (2012) to estimate the system porosity. The macroporosities are used to evaluate the primary MAS formation hypotheses. The visible observing campaign includes 25 MASs obtained using the SOAR telescope with the Goodman High Throughput Spectrometer. The infrared observing campaign includes 34 MASs obtained using the NASA IRTF with the SpeX spectragraph. The MASs are classified using the Bus-DeMeo taxonomic system. We perform a NIR spectral band parameter analysis using a new analysis routine, the Spectral Analysis Routine for Asteroids (SARA). The SARA routine determines band centers, areas, and depths by utilizing the diagnostic absorption features near 1- ...

Lindsay, Sean S; Emery, Joshua P; Enriquez, J Emilio; Assafin, Marcelo

2014-01-01T23:59:59.000Z

62

Substation grounding programs  

SciTech Connect (OSTI)

The five volume report comprises the user manual, installation, and validation manual and an applications guide for the SGA (Substation Grounding Analysis) software package. SGA consists of four computer programs: (1) SOMIP, (2) SMECC, (3) SGSYS, and (4) TGRND. The first three programs provide a comprehensive analysis tool for the design of substation grounding systems to meet safety standards. The fourth program, TGRND, provides a state of the art analysis tool for computing transient ground potential rise and ground system impedance. This part of the report, Volume 1, is a users manual and an installation and validation manual for the computer program SOMIP (SOil Measurement Interpretation Program). This program computes the best estimate of the parameters of a two layer soil model from usual soil resistivity measurements. Four pin or three pin soil measurements can be accommodated. In addition, it provides error bounds on the soil parameters for a given confidence level. The users manual describes data requirements and data preparation procedures. The installation and validation manual describes the computer files which make up the program SOMIP and provides two test cases for validation purposes. 4 refs.

Meliopoulos, A.P.S. (Georgia Inst. of Tech., Atlanta, GA (United States). School of Electrical Engineering)

1992-05-01T23:59:59.000Z

63

Packet loss visibility and packet prioritization in digital videos  

E-Print Network [OSTI]

Performance comparison for videos with apparent compres-Prioritization in Digital Videos A Dissertation submitted inloss visibility,” Packet Video Workshop, Irvine, December

Kanumuri, Sandeep

2006-01-01T23:59:59.000Z

64

GROUND WATER CONTAMINATION  

SciTech Connect (OSTI)

As required by the terms of the above referenced grant, the following summary serves as the Final Report for that grant. The grant relates to work performed at two separate sites, the Hoe Creek Underground Coal Gasification Site south of Gillette, Wyoming, and the Rock Springs In-Situ Oil Shale Retort Site near Rock Springs, Wyoming. The primary concern to the State of Wyoming at each site is ground water contamination (the primary contaminants of concern are benzene and related compounds), and the purpose of the grant has been to provide tiding for a Geohydrologist at the appropriate State agency, specifically the Land Quality Division (LQD) of the Wyoming Department of Environmental Quality. The LQD Geohydrologist has been responsible for providing technical and regulatory support to DOE for ground water remediation and subsequent surface reclamation. Substantial progress has been made toward remediation of the sites, and continuation of LQD involvement in the remediation and reclamation efforts is addressed.

Unknown

1999-09-01T23:59:59.000Z

65

Visibility in Discrete Geometry: an application to discrete geodesic paths  

E-Print Network [OSTI]

Visibility in Discrete Geometry: an application to discrete geodesic paths David Coeurjolly that are visible from a source pixel. Based on these definitions, we define discrete geodesic paths in dis- crete domain with obstacles. This allows us to introduce a new geodesic metric in discrete geometry

Paris-Sud XI, Université de

66

The Lightwave Model 142 CW Visible Ring Laser,  

E-Print Network [OSTI]

, operation temperature was controlled using a diode thermo-electric cooler. The laser specifications [4] were1 The Lightwave Model 142 CW Visible Ring Laser, Beam Splitter, Model ATM- 80A1 Acousto Dr. Andres LaRosa Abstract A Lightwave Electronics Model 142 continuous wave visible (green) laser

La Rosa, Andres H.

67

Visible Inequality, Status Competition and Conspicuous Consumption: Evidence from India  

E-Print Network [OSTI]

Visible Inequality, Status Competition and Conspicuous Consumption: Evidence from India Punarjit representative micro data from India. I ...nd that a decrease in the level of visible inequality, ceteris paribus in one's social status due to parallel action of others. From a policy perspective, my ...ndings

Bandyopadhyay, Antar

68

MODELING OF VERTICAL GROUND LOOP HEAT EXCHANGERS FOR GROUND SOURCE  

E-Print Network [OSTI]

MODELING OF VERTICAL GROUND LOOP HEAT EXCHANGERS FOR GROUND SOURCE HEAT PUMP SYSTEMS By CENK SOURCE HEAT PUMP SYSTEMS Thesis Approved: ___________________________________________ Thesis Adviser scale test data. The short-term behavior of ground-coupled heat pump systems is important for the design

69

Fringe Visibility Estimators for the Palomar Testbed Interferometer  

E-Print Network [OSTI]

Visibility estimators and their performance are presented for use with the Palomar Testbed Interferometer (PTI). One operational mode of PTI is single-baseline visibility measurement using pathlength modulation with synchronous readout by a NICMOS-3 infrared array. Visibility is estimated from the fringe quadratures, either incoherently, or using source phase referencing to provide a longer coherent integration time. The visibility estimators differ those used with photon-counting detectors in order to account for biases attributable to detector offsets and read noise. The performance of these estimators is affected not only by photon noise, but also by the detector read noise and errors in estimating the bias corrections, which affect the incoherent and coherent estimators differently. Corrections for visibility loss in the coherent estimators using the measured tracking jitter are also presented.

M. M. Colavita

1998-10-28T23:59:59.000Z

70

Final LDRD report : enhanced spontaneous emission rate in visible III-nitride LEDs using 3D photonic crystal cavities.  

SciTech Connect (OSTI)

The fundamental spontaneous emission rate for a photon source can be modified by placing the emitter inside a periodic dielectric structure allowing the emission to be dramatically enhanced or suppressed depending on the intended application. We have investigated the relatively unexplored realm of interaction between semiconductor emitters and three dimensional photonic crystals in the visible spectrum. Although this interaction has been investigated at longer wavelengths, very little work has been done in the visible spectrum. During the course of this LDRD, we have fabricated TiO{sub 2} logpile photonic crystal structures with the shortest wavelength band gap ever demonstrated. A variety of different emitters with emission between 365 nm and 700 nm were incorporated into photonic crystal structures. Time-integrated and time-resolved photoluminescence measurements were performed to measure changes to the spontaneous emission rate. Both enhanced and suppressed emission were demonstrated and attributed to changes to the photonic density of states.

Fischer, Arthur Joseph; Subramania, Ganapathi S.; Coley, Anthony J.; Lee, Yun-Ju; Li, Qiming; Wang, George T.; Luk, Ting Shan; Koleske, Daniel David; Fullmer, Kristine Wanta

2009-09-01T23:59:59.000Z

71

The LOFT Ground Segment  

E-Print Network [OSTI]

LOFT, the Large Observatory For X-ray Timing, was one of the ESA M3 mission candidates that completed their assessment phase at the end of 2013. LOFT is equipped with two instruments, the Large Area Detector (LAD) and the Wide Field Monitor (WFM). The LAD performs pointed observations of several targets per orbit (~90 minutes), providing roughly ~80 GB of proprietary data per day (the proprietary period will be 12 months). The WFM continuously monitors about 1/3 of the sky at a time and provides data for about ~100 sources a day, resulting in a total of ~20 GB of additional telemetry. The LOFT Burst alert System additionally identifies on-board bright impulsive events (e.g., Gamma-ray Bursts, GRBs) and broadcasts the corresponding position and trigger time to the ground using a dedicated system of ~15 VHF receivers. All WFM data are planned to be made public immediately. In this contribution we summarize the planned organization of the LOFT ground segment (GS), as established in the mission Yellow Book 1 . We...

Bozzo, E; Argan, A; Barret, D; Binko, P; Brandt, S; Cavazzuti, E; Courvoisier, T; Herder, J W den; Feroci, M; Ferrigno, C; Giommi, P; Götz, D; Guy, L; Hernanz, M; Zand, J J M in't; Klochkov, D; Kuulkers, E; Motch, C; Lumb, D; Papitto, A; Pittori, C; Rohlfs, R; Santangelo, A; Schmid, C; Schwope, A D; Smith, P J; Webb, N A; Wilms, J; Zane, S

2014-01-01T23:59:59.000Z

72

Using satellite radar backscatter to predict above-ground woody biomass: A consistent relationship across four different African  

E-Print Network [OSTI]

Using satellite radar backscatter to predict above-ground woody biomass: A consistent relationship. [1] Regional-scale above-ground biomass (AGB) estimates of tropical savannas and woodlands are highly and L-band backscatter for lower-biomass tropical woody vegetation. This relationship allows regional

73

Secure Programming via Visibly Pushdown Safety Games William Harris  

E-Print Network [OSTI]

Safety Games William R. Harris1 , Somesh Jha1 , and Thomas Reps1,2 1 University of WisconsinComputer Sciences Department Secure Programming via Visibly Pushdown Safety Games William Harris

Reps, Thomas W.

74

Visible spectroscopic imaging on the Alcator C-Mod tokamak  

E-Print Network [OSTI]

This dissertation reports on the development of a diagnostic visible imaging system on the Alcator C-Mod tokamak and the results from that system. The dissertation asserts the value of this system as a qualitative and ...

Boswell, C. J. (Christopher James), 1974-

2003-01-01T23:59:59.000Z

75

Ground potential rise monitor  

DOE Patents [OSTI]

A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.

Allen, Zachery W. (Mandan, ND); Zevenbergen, Gary A. (Arvada, CO)

2012-04-03T23:59:59.000Z

76

Optical assembly of a visible through thermal infrared multispectral imaging system  

SciTech Connect (OSTI)

The Optical Assembly (OA) for the Multispectral Thermal Imager (MTI) program has been fabricated, assembled, and successfully tested for its performance. It represents a major milestone achieved towards completion of this earth observing E-O imaging sensor that is to be operated in low earth orbit. Along with its wide-field-of-view (WFOV), 1.82{degree} along-track and 1.38{degree} cross-track, and comprehensive on-board calibration system, the pushbroom imaging sensor employs a single mechanically cooled focal plane with 15 spectral bands covering a wavelength range from 0.45 to 10.7 {micro}m. The OA has an off-axis three-mirror anastigmatic (TMA) telescope with a 36-cm unobscured clear aperture. The two key performance criteria, 80% enpixeled energy in the visible and radiometric stability of 1% 1{sigma} in the visible/near-infrared (VNIR) and short wavelength infrared (SWIR), of 1.45% 1{sigma} in the medium wavelength infrared (MWIR), and of 0.53% 1{sigma} long wavelength infrared (LWIR), as well as its low weight (less than 49 kg) and volume constraint (89 cm x 44 cm x 127 cm) drive the overall design configuration of the OA and fabrication requirements.

Henson, T. [Sandia National Labs., Albuquerque, NM (United States); Bender, S.; Byrd, D. [Los Alamos National Labs., NM (United States). NIS Div.; Rappoport, W.; Shen, G.Y. [Raytheon Optical Systems, Inc., Danbury, CT (United States)

1998-06-01T23:59:59.000Z

77

Analysis of the Energy Spectra of Ground States of Deformed Nuclei in rare-earth region  

E-Print Network [OSTI]

The 62Sm, 64Gd, 64Dy, 70Y b, 72Hf and 74W nuclei are classified as deformed nuclei. Low-lying bands are one of the most fundamental excitation modes in the energy spectra of deformed nuclei. In this paper a theoretical analysis of the experimental data within the phenomenological model is presented. The energy spectra of ground states are calculated. It is found the low-lying spectra of ground band states are in good agreement with the experimental data.

Abdurahim A. Okhunov; G. I. Turaeva; M. U. Khandaker; Noora B. Rosli

2014-05-28T23:59:59.000Z

78

Broad-band beam buncher  

DOE Patents [OSTI]

A broad-band beam buncher is disclosed, comprising an evacuated housing, an electron gun therein for producing an electron beam, a buncher cavity having entrance and exit openings through which the beam is directed, grids across such openings, a source providing a positive DC voltage between the cavity and the electron gun, a drift tube through which the electron beam travels in passing through such cavity, grids across the ends of such drift tube, gaps being provided between the drift tube grids and the entrance and exit grids, a modulator for supplying an ultrahigh frequency modulating signal to the drift tube for producing velocity modulation of the electrons in the beam, a drift space in the housing through which the velocity modulated electron beam travels and in which the beam is bunched, and a discharge opening from such drift tube and having a grid across such opening through which the bunched electron beam is discharged into an accelerator or the like. The buncher cavity and the drift tube may be arranged to constitute an extension of a coaxial transmission line which is employed to deliver the modulating signal from a signal source. The extended transmission line may be terminated in its characteristic impedance to afford a broad-band response and the device as a whole designed to effect broad-band beam coupling, so as to minimize variations of the output across the response band.

Goldberg, David A. (Walnut Creek, CA); Flood, William S. (Berkeley, CA); Arthur, Allan A. (Martinez, CA); Voelker, Ferdinand (Orinda, CA)

1986-01-01T23:59:59.000Z

79

Engineering integrated pure narrow-band photon sources  

E-Print Network [OSTI]

Engineering and controlling well defined states of light for quantum information applications is of increasing importance as the complexity of quantum systems grows. For example, in quantum networks high multi-photon interference visibility requires properly devised single mode sources. In this paper we propose a spontaneous parametric down conversion source based on an integrated cavity-waveguide, where single narrow-band, possibly distinct, spectral modes for the idler and the signal fields can be generated. This mode selection takes advantage of the clustering effect, due to the intrinsic dispersion of the nonlinear material. In combination with a CW laser and fast detection, our approach provides a means to engineer a source that can efficiently generate pure photons, without filtering, that is compatible with long distance quantum communication. Furthermore, it is extremely flexible and could easily be adapted to a wide variety of wavelengths and applications.

Enrico Pomarico; Bruno Sanguinetti; Clara I. Osorio; Harald Herrmann; Rob Thew

2011-08-29T23:59:59.000Z

80

CHARACTERISTIC SIZE OF FLARE KERNELS IN THE VISIBLE AND NEAR-INFRARED CONTINUA  

SciTech Connect (OSTI)

In this Letter, we present a new approach to estimate the formation height of visible and near-infrared emission of an X10 flare. The sizes of flare emission cores in three wavelengths are accurately measured during the peak of the flare. The source size is the largest in the G band at 4308 A and shrinks toward longer wavelengths, namely the green continuum at 5200 A and NIR at 15600 A, where the emission is believed to originate from the deeper atmosphere. This size-wavelength variation is likely explained by the direct heating model as electrons need to move along converging field lines from the corona to the photosphere. Therefore, one can observe the smallest source, which in our case is 0.''65 {+-} 0.''02 in the bottom layer (represented by NIR), and observe relatively larger kernels in upper layers of 1.''03 {+-} 0.''14 and 1.''96 {+-} 0.''27, using the green continuum and G band, respectively. We then compare the source sizes with a simple magnetic geometry to derive the formation height of the white-light sources and magnetic pressure in different layers inside the flare loop.

Xu, Yan; Jing, Ju; Wang, Haimin [Space Weather Research Lab, Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102-1982 (United States); Cao, Wenda, E-mail: yx2@njit.edu [Big Bear Solar Observatory, Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102-1982 (United States)

2012-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

Ground Turkey Stir Fry Ingredients  

E-Print Network [OSTI]

Ground Turkey Stir Fry Ingredients: 1 1/2 cups brown rice, medium- grain, making 3 cups cooked 1 pound ground turkey 4 zucchini 1 onion 1 green pepper 1/4 teaspoon pepper Directions 1. Cook brown rice turkey in skillet and use a spatula to break beef into small pieces as it browns. Keep on stirring

Liskiewicz, Maciej

82

Regional analysis of ground and above-ground climate  

SciTech Connect (OSTI)

The regional suitability of underground construction as a climate control technique is discussed with reference to (1) a bioclimatic analysis of long-term weather data for 29 locations in the United States to determine appropriate above ground climate control techniques, (2) a data base of synthesized ground temperatures for the coterminous United States, and (3) monthly dew point ground temperature comparisons for identifying the relative likelihood of condensation from one region to another. It is concluded that the suitability of earth tempering as a practice and of specific earth-sheltered design stereotypes varies geographically; while the subsurface almost always provides a thermal advantage on its own terms when compared to above ground climatic data, it can, nonetheless, compromise the effectiveness of other, regionally more important climate control techniques. Also contained in the report are reviews of above and below ground climate mapping schemes related to human comfort and architectural design, and detailed description of a theoretical model of ground temperature, heat flow, and heat storage in the ground. Strategies of passive climate control are presented in a discussion of the building bioclimatic analysis procedure which has been applied in a computer analysis of 30 years of weather data for each of 29 locations in the United States.

Not Available

1981-12-01T23:59:59.000Z

83

Use Remote Sensing Data (selected visible and infrared spectrums...  

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

LLC - Assist in permitting, drill & case Temperature Gradient wells and provide "boots-on-the- ground", as requested. Flint Geothermal LLC Geothermal Peer Review - Crystal...

84

Intermediate-band material based on GaAs quantum rings for solar cells  

SciTech Connect (OSTI)

The intermediate-band concept is invoked to explain the photoresponse spectra obtained for unbiased devices fabricated from GaAs quantum rings grown by a droplet epitaxy technique on lattice-matched Al{sub 0.3}Ga{sub 0.7}As barriers. The photoresponse spectra where measured at room temperature in the visible-near-infrared spectral range. The presence of the intermediate band in the device active region is confirmed by measuring the mid-infrared photoresponse, which is attributed to the intersubband transitions in the conduction band. The photocurrent was measured at room temperature and found to be about four orders of magnitude larger than the dark current in the voltage range of {+-} 4.0 V.

Wu Jiang; Shao Dali [Department of Electrical Engineering, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Li Zhenhua; Kunets, Vasyl P.; Wang Zhiming; Salamo, G. J. [Institute of Nanoscale Materials Science and Engineering, Fayetteville, Arkansas 72701 (United States); Manasreh, M. O. [Department of Electrical Engineering, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Institute of Nanoscale Materials Science and Engineering, Fayetteville, Arkansas 72701 (United States)

2009-08-17T23:59:59.000Z

85

Algorithms for the Automatic Identification of MARFEs and UFOs in JET Database of Visible Camera Videos  

E-Print Network [OSTI]

Algorithms for the Automatic Identification of MARFEs and UFOs in JET Database of Visible Camera Videos

86

Non-Mimetic Simulation Games: Teaching Team Coordination from a Grounding in Practice  

E-Print Network [OSTI]

simulation, the goal is to re-create the world as faithfully as possible, as this has clear value for teaching skills. Non-mimetic simulations capture abstract, human-centered aspects of a work environment from a grounding in practice. They provide.... Design Principles for Engaging Cooperative Play . . . . . . 76 1. Information Distribution [Game Mechanics] . . . . . . 76 2. Modulating Visibility . . . . . . . . . . . . . . . . . . 77 3. Information Timing . . . . . . . . . . . . . . . . . . . 78 4...

Dugas Toups, Zachary Oliver

2011-10-21T23:59:59.000Z

87

Enhanced visible-light absorption of mesoporous TiO2 by co-doping with transition-metal/nitrogen ions  

SciTech Connect (OSTI)

Titanium (IV) oxide, TiO2, has been the object of intense scrutiny for energy applications. TiO2 is inexpensive, non-toxic, and has excellent corrosion resistance when exposed to electrolytes. A major drawback preventing the widespread use TiO2 for photolysis is its relatively large band gap of ~3eV. Only light with wavelengths shorter than 400 nm, which is in the ultraviolet portion of the spectrum, has sufficient energy to be absorbed. Less than 14 percent of the solar irradiation reaching the earth s surface has energy exceeding this band gap. Adding dopants such as transition metals has long been used to reduce the gap and increase photocatalytic activity by accessing the visible part of the solar spectrum. The degree to which the band gap is reduced using transition metals depends in part on the overlap of the d-orbitals of the transition metals with the oxygen p-orbitals. Therefore, doping with anions such as nitrogen to modify the cation-anion orbital overlap is another approach to reduce the gap. Recent studies suggest that using a combination of transition metals and nitrogen as dopants is more effective at introducing intermediate states within the band gap, effectively narrowing it. Here we report the synthesis of mesoporous TiO2 spheres, co-doped with transition metals and nitrogen that exhibit a nearly flat absorbance response across the visible spectrum extending into the near infrared.

Mathis, John [Embry-Riddle Aeronautical University; Bi, Zhonghe [ORNL; Bridges, Craig A [ORNL; Kidder, Michelle [ORNL; Paranthaman, Mariappan Parans [ORNL

2013-01-01T23:59:59.000Z

88

NLS ground states on graphs  

E-Print Network [OSTI]

We investigate the existence of ground states for the subcritical NLS energy on metric graphs. In particular, we find out a topological assumption that guarantees the nonexistence of ground states, and give an example in which the assumption is not fulfilled and ground states actually exist. In order to obtain the result, we introduce a new rearrangement technique, adapted to the graph where it applies. Owing to such a technique, the energy level of the rearranged function is improved by conveniently mixing the symmetric and monotone rearrangement procedures.

Riccardo Adami; Enrico Serra; Paolo Tilli

2014-06-16T23:59:59.000Z

89

Identification of a quasiparticle band in very neutron-rich {sup 104}Zr  

SciTech Connect (OSTI)

The high spin levels of a very neutron-rich {sup 104}Zr nucleus have been reinvestigated by measuring the prompt {gamma} rays in the spontaneous fission of {sup 252}Cf. The ground-state band has been confirmed. A new sideband has been identified with a band-head energy at 1928.7 keV. The projected shell model is employed to investigate the band structure of {sup 104}Zr. The results of calculated levels are in good agreement with the experimental data, and suggest that the new band in {sup 104}Zr may be based on the neutron {nu}5/2{sup -}[532] x {nu}3/2{sup +}[411] configuration.

Yeoh, E. Y.; Wang, J. G.; Ding, H. B.; Gu, L.; Xu, Q.; Xiao, Z. G. [Department of Physics, Tsinghua University, Beijing 100084 (China); Zhu, S. J. [Department of Physics, Tsinghua University, Beijing 100084 (China); Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Hamilton, J. H.; Ramayya, A. V.; Hwang, J. K.; Liu, S. H. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Liu, Y. X. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); School of Science, Huzhou Teachers College, Huzhou 313000 (China); Sun, Y. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Luo, Y. X. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Rasmussen, J. O.; Lee, I. Y. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2010-08-15T23:59:59.000Z

90

Red Band Needle Blight TERMS OF REFERENCE  

E-Print Network [OSTI]

Red Band Needle Blight TERMS OF REFERENCE Purpose 1. The Programme Board has been formed to have an overview of the administration and science of Red Band Needle Blight (RBNB), to underpin decisions made

91

GLAO IN THE VISIBLE: THE SAM EXPERIENCE Andrei Tokovinina  

E-Print Network [OSTI]

-common-path errors were avoided. SAM can feed corrected images to its internal CCD detector, SAMI (4K×4K CCDGLAO IN THE VISIBLE: THE SAM EXPERIENCE Andrei Tokovinina Cerro Tololo Interamerican Observatory, Casilla 603, La Serena, Chile Abstract. The SOAR adaptive module (SAM) is going through science

Tokovinin, Andrei A.

92

Resonator design for a visible wavelength free-electron laser (*)  

SciTech Connect (OSTI)

Design requirements for a visible wavelength free-electron laser being developed at the Accelerator Test Facility at Brookhaven National Laboratory are presented along with predictions of laser performance from 3-D numerical simulations. The design and construction of the optical resonator, its alignment and control systems are also described. 15 refs., 8 figs., 4 tabs.

Bhowmik, A.; Lordi, N. (Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.); Ben-Zvi, I.; Gallardo, J. (Brookhaven National Lab., Upton, NY (United States))

1990-01-01T23:59:59.000Z

93

Visibility Preprocessing with Occluder Fusion for Urban Walkthroughs  

E-Print Network [OSTI]

in the umbra (shadow volume) with respect to a given area light source. In contrast to occlusion from a point: · The umbra with respect to a polygonal area light source is not only bounded by planes, but also by reguli, i. For visibility from a point, the joint umbra of many occluders is the union of the umbrae of the individual

94

The Lightwave Model 142 CW Visible Ring Laser,  

E-Print Network [OSTI]

, operation temperature was controlled using a diode thermo-electric cooler. The laser specifications [4] were1 The Lightwave Model 142 CW Visible Ring Laser, Beam Splitter, Model ATM- 80A1 Acousto Dr. Andres LaRosa March 11th , 2003 #12;2 Abstract A Lightwave Electronics Model 142 continuous wave

La Rosa, Andres H.

95

Dust-Acoustic Waves: Visible Sound Waves Robert L. Merlino  

E-Print Network [OSTI]

Dust-Acoustic Waves: Visible Sound Waves Robert L. Merlino Department of Physics and Astronomy with their announcement that: "We find that a new type of sound wave, namely, the dust-acoustic waves, can appear" [1 and experimental work on dust acoustic waves is given. The basic physics of the dust acoustic wave and some

Merlino, Robert L.

96

Interactive Visibility Culling in Complex Environments using Occlusion-Switches  

E-Print Network [OSTI]

Categories and Subject Descriptors: I.3.5 [Com- puter Graphics]: Computational Geometry and Object ModelingInteractive Visibility Culling in Complex Environments using Occlusion-Switches Naga K. Govindaraju culling in complex 3D environments. An occlusion- switch consists of two GPUs (graphics processing units

North Carolina at Chapel Hill, University of

97

Ground Penetrating Radar, Barrow, Alaska  

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

This is 500 MHz Ground Penetrating Radar collected along the AB Line in Intensive Site 1 beginning in October 2012 and collected along L2 in Intensive Site 0 beginning in September 2011. Both continue to the present.

John Peterson

98

Ground Water Management Regulations (Louisiana)  

Broader source: Energy.gov [DOE]

The rules and regulations apply to the management of the state's ground water resources. In addition, the Commissioner of Conservation has recommended that oil and gas operators with an interest...

99

Calibrating Pesticide Application Ground Equipment  

E-Print Network [OSTI]

This pocket-sized guide gives step-by-step instructions for calibrating ground sprayers. Tables provide instructions, examples and sample formulas for determining speed of application, flow rate and the amount of pesticide to add to the tank....

Shaw, Bryan W.

2000-07-05T23:59:59.000Z

100

Semiconductor-Based Interfacial Electron-Transfer Reactivity: Decoupling Kinetics from pH-Dependent Band Energetics in a Dye-Sensitized Titanium Dioxide/Aqueous Solution  

E-Print Network [OSTI]

H-Dependent Band Energetics in a Dye-Sensitized Titanium Dioxide/Aqueous Solution System Susan G. Yan and Joseph T-bandgap semiconductors via attachment of redox-active dyes offers a means of sensitizing these materials for visible,3 As with other semiconductor/molecular dye assemblies, these work by electron injection from a photoexcited state

Note: This page contains sample records for the topic "ground visible band" 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

Low band gap polymers Organic Photovoltaics  

E-Print Network [OSTI]

Low band gap polymers for Organic Photovoltaics Eva Bundgaard Ph.D. Dissertation Risø National Bundgaard Title: Low band gap polymers for Organic photovoltaics Department: The polymer department Report the area of organic photovoltaics are focusing on low band gap polymers, a type of polymer which absorbs

102

MODELING, SIMULATION AND OPTIMIZATION OF GROUND SOURCE  

E-Print Network [OSTI]

MODELING, SIMULATION AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS By MUHAMMAD HAIDER KHAN AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS Thesis Approved..................................................................................................................... 1 1.1 Overview of Ground Source Heat Pump Systems.............................................. 1 1

103

Questa Baseline and Pre-Mining Ground-Water Quality Investigation. 3. Historical Ground-Water  

E-Print Network [OSTI]

............................................................................................................................................................... 9 Mine history and ground-water development ....................................................................................................................................................... 11 Ground-water quality database.......................................................................................................................................................... 29 Compilation of complete database

104

Red Band Needle Blight Programme Red Band Needle Blight of Pine Programme Group  

E-Print Network [OSTI]

Red Band Needle Blight Programme Group Red Band Needle Blight of Pine Programme Group Minutes Support Welcome and introduction 1. Jim thanked everyone for attending the first meeting of the Red Band and that the private 1 | Paper 1 - Minutes | Debbie Erskine | 23/01/2009 #12;Red Band Needle Blight Programme Group

105

Phase Angle Effects on 3-micron Absorption Band on Ceres: Implications for Dawn Mission  

E-Print Network [OSTI]

Phase angle-induced spectral effects are important to characterize since they affect spectral band parameters such as band depth and band center, and therefore skew mineralogical interpretations of planetary bodies via reflectance spectroscopy. Dwarf planet (1) Ceres is the next target of NASA's Dawn mission, which is expected to arrive in March 2015. The visible and near-infrared mapping spectrometer (VIR) onboard Dawn has the spatial and spectral range to characterize the surface between 0.25-5.0 microns. Ceres has an absorption feature at 3.0 microns due to hydroxyl- and/or water-bearing minerals (e.g. Lebofsky et al. 1981, Rivkin et al. 2003). We analyzed phase angle-induced spectral effects on the 3-micron absorption band on Ceres using spectra measured with the long-wavelength cross-dispersed (LXD: 1.9-4.2 microns) mode of the SpeX spectrograph/imager at the NASA Infrared Telescope Facility (IRTF). Ceres LXD spectra were measured at different phase angles ranging from 0.7o to 22o. We found that the band...

Takir, Driss; Sanchez, Juan A; Corre, Lucille Le; Hardersen, Paul S; Nathues, Andreas

2015-01-01T23:59:59.000Z

106

Reflection beamshifts of visible light due to graphene  

E-Print Network [OSTI]

I present theoretical calculations of reflection beamshifts, Goos-H\\"anchen and Imbert-Fedorov shifts, due to the presence of a monolayer graphene on a dielectric media when using a beam with wavelength in the visible range. Specifically, I look at beamshifts for different polarization states (p, s, $45^0$, $\\sigma^+$). The Goos-H\\"anchen shifts I calculated are in good agreement with results of a recent experiment. I will discuss other possible experimental routes to determine beamshifts in graphene.

Hermosa, N

2015-01-01T23:59:59.000Z

107

Visible light photon counters optimization for quantum information applications  

SciTech Connect (OSTI)

In this paper we describe the studies of the main parameters needed for optimal operation of Visible Light Photon Counters (VLPCs) when used in quantum information systems. The isolation of the single photon signal is analyzed through the definition of a contamination parameter. A compromise in the minimization of this parameter for temperature, bias voltage and dark count variation must be achieved and this depends on the experimental conditions.

Molina, J.; /Rio de Janeiro State U.; Estrada, J.; Bross, A.; /Fermilab; Ginther, G.; /Rochester U.; Buscher, V.; /Freiburg U.

2006-10-01T23:59:59.000Z

108

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

109

Emission of Visible Light by Hot Dense Metals  

SciTech Connect (OSTI)

We consider the emission of visible light by hot metal surfaces having uniform and non-uniform temperature distributions and by small droplets of liquid metal. The calculations employ a nonlocal transport theory for light emission, using the Kubo formula to relate microscopic current fluctuations to the dielectric function of the material. We describe a related algorithm for calculating radiation emission in particle simulation of hot fusion plasmas.

More, R.M.; Goto, M.; Graziani, F.; Ni, P.A.; Yoneda, H.

2009-12-01T23:59:59.000Z

110

Advancing Visibility of Grid Operations to Improve Reliability | Department  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement3-- ------------------------------ChapterJuly 20142Lora Toyof Energy Visibility

111

Visible and Infrared Optical Design for the ITER Upper Ports  

SciTech Connect (OSTI)

This document contains the results of an optical design scoping study of visible-light and infrared optics for the ITER upper ports, performed by LLNL under contract for the US ITER Project Office. ITER is an international collaboration to build a large fusion energy tokamak with a goal of demonstrating net fusion power for pulses much longer than the energy confinement time. At the time of this report, six of the ITER upper ports are planned to each to contain a camera system for recording visible and infrared light, as well as other diagnostics. the performance specifications for the temporal and spatial resolution of this system are shown in the Section II, Functional Specifications. They acknowledge a debt to Y. Corre and co-authors of the CEA Cadarache report ''ITER wide-angle viewing and thermographic and visible system''. Several of the concepts used in this design are derived from that CEA report. The infrared spatial resolution for optics of this design is diffraction-limited by the size of the entrance aperture, at lower resolution than listed in the ITER diagnostic specifications. The size of the entrance aperture is a trade-off between spatial resolution, optics size in the port, and the location of relay optics. The signal-to-noise ratio allows operation at the specified time resolutions.

Lasnier, C; Seppala, L; Morris, K; Groth, M; Fenstermacher, M; Allen, S; Synakowski, E; Ortiz, J

2007-03-01T23:59:59.000Z

112

Nonlinear Dynamics of Longitudinal Ground Vehicle Traction  

E-Print Network [OSTI]

asphalt b) Wet asphalt c) Gravel d) Packed Snow Nonlinear Dynamics of Longitudinal Ground Vehicle Traction

Shaw, Steven W.

113

X-BAND KLYSTRON DEVELOPMENT AT SLAC  

SciTech Connect (OSTI)

The development of X-band klystrons at SLAC originated with the idea of building an X-band Linear Collider in the late 1980's. Since then much effort has been expended in developing a reliable X-band Power source capable of delivering >50 MW RF power in pulse widths >1.5 {micro}s. I will report on some of the technical issues and design strategies which have led to the current SLAC klystron designs.

Vlieks, Arnold E.; /SLAC

2009-08-03T23:59:59.000Z

114

Vibration Stabilization of a Mechanical Model of a X-Band Linear Collider Final Focus Magnet  

SciTech Connect (OSTI)

The small beam sizes at the interaction point of a X-band linear collider require mechanical stabilization of the final focus magnets at the nanometer level. While passive systems provide adequate performance at many potential sites, active mechanical stabilization is useful if the natural or cultural ground vibration is higher than expected. A mechanical model of a room temperature linear collider final focus magnet has been constructed and actively stabilized with an accelerometer based system.

Frisch, Josef; Chang, Allison; Decker, Valentin; Doyle, Eric; Eriksson, Leif; Hendrickson, Linda; Himel, Thomas; Markiewicz, Thomas; Partridge, Richard; Seryi, Andrei; /SLAC

2006-09-28T23:59:59.000Z

115

Possible chiral bands in {sup 194}Tl  

SciTech Connect (OSTI)

High spin states in {sup 194}Tl, excited through the {sup 181}Ta({sup 18}O,5n) fusion evaporation reaction, were studied using the AFRODITE array at iThemba LABS. Candidate chiral bands built on the {pi}h{sub 9/2} x {nu}i{sub 13/2}{sup 1} configuration were found. Furthermore these bands were observed through a band crossing caused by the excitation of a {nu}i{sub 13/2} pair. Above the band crossing the excitation energies remain close, suggesting that chirality may persist for the four quasiparticle configuration too.

Masiteng, P. L.; Ramashidzha, T. M.; Maliage, S. M.; Sharpey-Schafer, J. F.; Vymers, P. A. [iThemba LABS, P.O Box 722, 7129 (South Africa); University of the Western Cape, Private Bag X17, 7535 Bellville (South Africa); Lawrie, E. A.; Lawrie, J. J.; Bark, R. A.; Mullins, S. M.; Murray, S. H. T. [iThemba LABS, P.O Box 722, 7129 (South Africa); Kau, J.; Komati, F. [iThemba LABS, P.O Box 722, 7129 (South Africa); University of the North West, Private Bag X2046, 2735 Mafikeng (South Africa); Lindsay, R. [University of the Western Cape, Private Bag X17, 7535 Bellville (South Africa); Matamba, I. [University of Venda for Science and Technology, Thohoyandou (South Africa); Mutshena, P. [iThemba LABS, P.O Box 722, 7129 (South Africa); University of Venda for Science and Technology, Thohoyandou (South Africa); Zhang, Y. [iThemba LABS, P.O Box 722, 7129 (South Africa); University of Cape Town, Private Bag, 7701 Rondebosch (South Africa)

2011-10-28T23:59:59.000Z

116

Polarimetric Remote Sensing in the Visible to Near Infrared James R. Shell II  

E-Print Network [OSTI]

Polarimetric Remote Sensing in the Visible to Near Infrared by James R. Shell II B.S. Physics Title of Dissertation: Polarimetric Remote Sensing in the Visible to Near Infrared I, James R. Shell II Remote Sensing in the Visible to Near Infrared by James R. Shell II Submitted to the Chester F. Carlson

Salvaggio, Carl

117

Comparison of multivariate methods for inferential modeling of soil carbon using visible/near-infrared spectra  

E-Print Network [OSTI]

Comparison of multivariate methods for inferential modeling of soil carbon using visible/near-infrared Diffuse reflectance spectroscopy Visible/near-infrared spectroscopy Multivariate calibration Pre-processing transformations In order to reduce costs and time in the analysis of soil properties, visible/near-infrared

Grunwald, Sabine

118

Author's personal copy Soil total carbon analysis in Hawaiian soils with visible, near-infrared and  

E-Print Network [OSTI]

Author's personal copy Soil total carbon analysis in Hawaiian soils with visible, near-infrared reflectance spectroscopy Agriculture Hawaii Mid-infrared Soil carbon Visible near-infrared Accurate assessment of DRS for Ct prediction of Hawaiian ag- ricultural soils by creating visible, near-infrared (VNIR

Grunwald, Sabine

119

Comparison of Long-Wave Infrared Imaging and Visible/Near-Infrared Imaging of Vegetation for  

E-Print Network [OSTI]

Comparison of Long-Wave Infrared Imaging and Visible/Near-Infrared Imaging of Vegetation using spectral imaging. This has been accom- plished with both visible/near-infrared (Vis/NIR) sunlight-path laser absorption measurements [14]­[16], in-situ visible and near-infrared (Vis/NIR) spectral

Lawrence, Rick L.

120

ARM - Evaluation Product - Airborne Visible/Infrared Imaging Spectrometer  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcal Documentation(AVIRIS) ProductsAirborne Visible/Infrared Imaging Spectrometer (AVIRIS) ARM Data Discovery

Note: This page contains sample records for the topic "ground visible band" 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

Photometric Trends in the Visible Solar Continuum and Their Sensitivity to the Center-to-Limb Profile  

E-Print Network [OSTI]

Solar irradiance variations over solar rotational time-scales are largely determined by the passage of magnetic structures across the visible solar disk. Variations on solar cycle time scales are thought to be similarly due to changes in surface magnetism with activity. Understanding the contribution of magnetic structures to total solar irradiance and solar spectral irradiance requires assessing their contributions as a function of disk position. Since only relative photometry is possible from the ground, the contrasts of image pixels are measured with respect to a center-to-limb intensity profile. Using nine years of full-disk red and blue continuum images from the Precision Solar Photometric Telescope at the Mauna Loa Solar Observatory (PSPT/MLSO), we examine the sensitivity of continuum contrast measurements to the center-to-limb profile definition. Profiles which differ only by the amount of magnetic activity allowed in the pixels used to determine them yield oppositely signed solar cycle length continuu...

Peck, Courtney

2015-01-01T23:59:59.000Z

122

Apparatus for loading a band saw blade  

DOE Patents [OSTI]

A band saw blade is loaded between pairs of guide wheels upon tensioning the blade by guiding the blade between pairs of spaced guide plates which define converging slots that converge toward the guide wheels. The approach is particularly useful in loading blades on underwater band saw machines used to cut radioactive materials. 2 figs.

Reeves, S.R.

1990-03-20T23:59:59.000Z

123

Narrow band gap amorphous silicon semiconductors  

DOE Patents [OSTI]

Disclosed is a narrow band gap amorphous silicon semiconductor comprising an alloy of amorphous silicon and a band gap narrowing element selected from the group consisting of Sn, Ge, and Pb, with an electron donor dopant selected from the group consisting of P, As, Sb, Bi and N. The process for producing the narrow band gap amorphous silicon semiconductor comprises the steps of forming an alloy comprising amorphous silicon and at least one of the aforesaid band gap narrowing elements in amount sufficient to narrow the band gap of the silicon semiconductor alloy below that of amorphous silicon, and also utilizing sufficient amounts of the aforesaid electron donor dopant to maintain the amorphous silicon alloy as an n-type semiconductor.

Madan, A.; Mahan, A.H.

1985-01-10T23:59:59.000Z

124

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-y).sub.1-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.

Bryan, Robert P. (Boulder, CO); Olbright, Gregory R. (Boulder, CO); Lott, James A. (Albuquerque, NM); Schneider, Jr., Richard P. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

125

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

126

Dual-band infrared capabilities for imaging buried object sites  

SciTech Connect (OSTI)

We discuss dual-band infrared (DBIR) capabilities for imaging buried object sizes. We identify physical features affecting thermal contrast needed to distinguish buried object sites from undisturbed sites or surface clutter. Apart from atmospheric transmission and system performance, these features include: object size, shape, and burial depth; ambient soil, disturbed soil and object site thermal diffusivity differences; surface temperature, emissivity, plant-cover, slope, albedo and roughness variations; weather conditions and measurement times. We use good instrumentation to measure the time-varying temperature differences between buried object sites and undisturbed soil sites. We compare near surface soil temperature differences with radiometric infrared (IR) surface temperature differences recorded at 4.7 {plus_minus} 0.4 {mu}m and at 10.6 {plus_minus} 1.0 {mu}m. By producing selective DBIR image ratio maps, we distinguish temperature-difference patterns from surface emissivity effects. We discuss temperature differences between buried object sites, filled hole site (without buried objects), cleared (undisturbed) soil sites, and grass-covered sites (with and without different types of surface clutter). We compare temperature, emissivity-ratio, visible and near-IR reflectance signatures of surface objects, leafy plants and sod. We discuss the physical aspects of environmental, surface and buried target features affecting interpretation of buried targets, surface objects and natural backgrounds.

Del Grande, N.K.; Durbin, P.F.; Gorvad, M.R.; Perkins, D.E.; Clark, G.A.; Hernandez, J.E.; Sherwood, R.J.

1993-04-02T23:59:59.000Z

127

Montana Ground Water Assessment Act (Montana)  

Broader source: Energy.gov [DOE]

This statute establishes a program to systematically assess and monitor the state's ground water and to disseminate the information to interested persons in order to improve the quality of ground...

128

North Village Ground Source Heat Pumps  

Broader source: Energy.gov [DOE]

Overview: Installation of Ground Source Heat Pumps. Replacement of Aging Heat Pumps. Alignment with Furmans Sustainability Goals.

129

Modeling of Photonic Band Gap Crystals and Applications  

SciTech Connect (OSTI)

In this work, the authors have undertaken a theoretical approach to the complex problem of modeling the flow of electromagnetic waves in photonic crystals. The focus is to address the feasibility of using the exciting phenomena of photonic gaps (PBG) in actual applications. The authors start by providing analytical derivations of the computational electromagnetic methods used in their work. They also present a detailed explanation of the physics underlying each approach, as well as a comparative study of the strengths and weaknesses of each method. The Plane Wave expansion, Transfer Matrix, and Finite Difference time Domain Methods are addressed. They also introduce a new theoretical approach, the Modal Expansion Method. They then shift the attention to actual applications. They begin with a discussion of 2D photonic crystal wave guides. The structure addressed consists of a 2D hexagonal structure of air cylinders in a layered dielectric background. Comparison with the performance of a conventional guide is made, as well as suggestions for enhancing it. The studies provide an upper theoretical limit on the performance of such guides, as they assumed no crystal imperfections and non-absorbing media. Next, they study 3D metallic PBG materials at near infrared and optical wavelengths. The main objective is to study the importance of absorption in the metal and the suitability of observing photonic band gaps in such structures. They study simple cubic structures where the metallic scatters are either cubes or interconnected metallic rods. Several metals are studied (aluminum, gold, copper, and silver). The effect of topology is addressed and isolated metallic cubes are found to be less lossy than the connected rod structures. The results reveal that the best performance is obtained by choosing metals with a large negative real part of the dielectric function, together with a relatively small imaginary part. Finally, they point out a new direction in photonic crystal research that involves the interplay of metallic-PBG rejection and photonic band edge absorption. They propose that an absolute metallic-PBG may be used to suppress the infrared part of the blackbody emission and, emit its energy only through a sharp absorption band. Potential applications of this new PBG mechanism include highly efficient incandescent lamps and enhanced thermophotovoltaic energy conversion. The suggested lamp would be able to recycle the energy that would otherwise go into the unwanted heat associated with usual lamps, into light emitted in the visible spectrum. It is estimated this would increase the efficiency over conventional lamps by about 40%.

Ihab Fathy El-Kady

2002-08-27T23:59:59.000Z

130

Case Study/ Ground Water Sustainability: Methodology and  

E-Print Network [OSTI]

, or the lack thereof, of ground water flow systems driven by similar hydrogeologic and economic conditionsCase Study/ Ground Water Sustainability: Methodology and Application to the North China Plain of a ground water flow system in the North China Plain (NCP) subject to severe overexploitation and rapid

Zheng, Chunmiao

131

Maximum Likelihood Sub-band Weighting for Robust Speech Recognition  

E-Print Network [OSTI]

, bins of log filter-band energy (FBE) in each sub-band are multiplied with a weighting factor depending on the reliability of the sub-band. For each sub-band, zero padding is performed on the log FBE vector lengthening. For the DCT has the size of full-band FBE vector, the feature vector consists of the correlations across

132

Navajo Generating Station and Air Visibility Regulations: Alternatives and Impacts  

SciTech Connect (OSTI)

Pursuant to the Clean Air Act, the U.S. Environmental Protection Agency (EPA) announced in 2009 its intent to issue rules for controlling emissions from Navajo Generating Station that could affect visibility at the Grand Canyon and at several other national parks and wilderness areas. The final rule will conform to what EPA determines is the best available retrofit technology (BART) for the control of haze-causing air pollutants, especially nitrogen oxides. While EPA is ultimately responsible for setting Navajo Generating Station's BART standards in its final rule, it will be the U.S. Department of the Interior's responsibility to manage compliance and the related impacts. This study aims to assist both Interior and EPA by providing an objective assessment of issues relating to the power sector.

Hurlbut, D. J.; Haase, S.; Brinkman, G.; Funk, K.; Gelman, R.; Lantz, E.; Larney, C.; Peterson, D.; Worley, C.; Liebsch, E.

2012-01-01T23:59:59.000Z

133

Atlas SCT/Pixel Grounding and Shielding ATLAS SCT/Pixel Grounding and Shielding Note  

E-Print Network [OSTI]

Atlas SCT/Pixel Grounding and Shielding 1 ATLAS SCT/Pixel Grounding and Shielding Note November 22 mostly connects existing mechanical electrical conductive #12; Atlas SCT/Pixel Grounding and Shielding 2 that equivalent. The barrel outer heat shield (150 aluminum) main element shield. #12; Atlas SCT/Pixel Grounding

California at Santa Cruz, University of

134

Rotational band properties in {sup 165}Er  

SciTech Connect (OSTI)

High-spin states in {sup 165}Er have been studied experimentally using the {sup 160}Gd({sup 9}Be, 4n) reaction at beam energies of 42 and 45 MeV. The previously known bands based on the 5/2{sup +}[642], 5/2{sup -}[523], and 11/2{sup -}[505] configurations are extended to (49/2{sup +}), (45/2{sup -}), and (31/2{sup -}) states, respectively. The rotational bands in {sup 165}Er generally show gradual alignment processes, indicating strong band interactions associated with the i{sub 13/2} neutron alignments. The band properties are compared with those in the neighboring nuclei and discussed within the framework of the cranked shell model.

Wang, S. T. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Graduate University of Chinese Academy of Sciences, Beijing 100049 (China); Zhou, X. H.; Zhang, Y. H.; Zheng, Y.; Liu, M. L.; Chen, L.; Zhang, N. T.; Hua, W.; Guo, S.; Qiang, Y. H.; Li, G. S.; Ding, B. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Shi, Y.; Xu, F. R. [School of Physics, and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)

2011-07-15T23:59:59.000Z

135

Dipole Bands in {sup 196}Hg  

SciTech Connect (OSTI)

High spin states in {sup 196}Hg have been populated in the {sup 198}Pt({alpha},6n) reaction at 65 MeV and the level scheme has been extended. A new dipole band has been observed and a previously observed dipole has been confirmed. Excitation energies, spins and parities of these bands were determined from DCO ratio and linear polarization measurements. Possible quasiparticle excitations responsible for these structures are discussed.

Lawrie, J. J.; Lawrie, E. A.; Newman, R. T.; Sharpey-Schafer, J. F.; Smit, F. D. [iThemba LABS, PO Box 722, Somerset West 7129 (South Africa); Msezane, B. [iThemba LABS, PO Box 722, Somerset West 7129 (South Africa); Physics Department, University of Zululand, Private Bag X1001, Kwadlangezwa 3886 (South Africa); Benatar, M.; Mabala, G. K.; Mutshena, K. P. [iThemba LABS, PO Box 722, Somerset West 7129 (South Africa); Physics Department, University of Cape Town, Rondebosch 7700 (South Africa); Federke, M.; Mullins, S. M. [Physics Department, University of Cape Town, Rondebosch 7700 (South Africa); Ncapayi, N. J.; Vymers, P. [iThemba LABS, PO Box 722, Somerset West 7129 (South Africa); Physics Department, University of the Western Cape, Private Bag X17, Belleville 7535 (South Africa)

2011-10-28T23:59:59.000Z

136

PROSPECTING IN LATE-TYPE DWARFS: A CALIBRATION OF INFRARED AND VISIBLE SPECTROSCOPIC METALLICITIES OF LATE K AND M DWARFS SPANNING 1.5 dex  

SciTech Connect (OSTI)

Knowledge of late K and M dwarf metallicities can be used to guide planet searches and constrain planet formation models. However, the determination of metallicities of late-type stars is difficult because visible wavelength spectra of their cool atmospheres contain many overlapping absorption lines, preventing the measurement of equivalent widths. We present new methods, and improved calibrations of existing methods, to determine metallicities of late K and M dwarfs from moderate resolution (1300 < R < 2000) visible and infrared spectra. We select a sample of 112 wide binary systems that contain a late-type companion to a solar-type primary star. Our sample includes 62 primary stars with previously published metallicities, as well as 50 stars with metallicities determined from our own observations. We use our sample to empirically determine which features in the spectrum of the companion are best correlated with the metallicity of the primary. We find {approx_equal}120 features in K and M dwarf spectra that are useful for predicting metallicity. We derive metallicity calibrations for different wavelength ranges, and show that it is possible to get metallicities reliable to <0.10 dex using either visible, J-, H-, or K-band spectra. We find that the most accurate metallicities derived from visible spectra requires the use of different calibrations for early-type (K5.5-M2) and late-type (M2-M6) dwarfs. Our calibrations are applicable to dwarfs with metallicities of -1.04 < [Fe/H] <+0.56 and spectral types from K7 to M5. Lastly, we use our sample of wide binaries to test and refine existing calibrations to determine M dwarf metallicities. We find that the {zeta} parameter, which measures the ratio of TiO can CaH bands, is correlated with [Fe/H] for super-solar metallicities, and {zeta} does not always correctly identify metal-poor M dwarfs. We also find that existing calibrations in the K and H bands are quite reliable for stars with [Fe/H] >-0.5, but are less useful for more metal-poor stars.

Mann, Andrew W.; Hilton, Eric J. [Institute for Astronomy, University of Hawai'i, 2680 Woodlawn Dr, Honolulu, HI 96822 (United States); Brewer, John M. [Department of Astronomy, Yale University, New Haven, CT 06511 (United States); Gaidos, Eric [Department of Geology and Geophysics, University of Hawai'i, 1680 East-West Road, Honolulu, HI 96822 (United States); Lepine, Sebastien [Department of Astrophysics, American Museum of Natural History, New York, NY 10024 (United States)

2013-02-01T23:59:59.000Z

137

Control Banding and Nanotechnology Synergist  

SciTech Connect (OSTI)

The average Industrial Hygienist (IH) loves a challenge, right? Okay, well here is one with more than a few twists. We start by going through the basics of a risk assessment. You have some chemical agents, a few workers, and the makings of your basic exposure characterization. However, you have no occupational exposure limit (OEL), essentially no toxicological basis, and no epidemiology. Now the real handicap is that you cannot use sampling pumps, cassettes, tubes, or any of the media in your toolbox, and the whole concept of mass-to-dose is out the window, even at high exposure levels. Of course, by the title, you knew we were talking about nanomaterials (NM). However, we wonder how many IHs know that this topic takes everything you know about your profession and turns it upside down. It takes the very foundations that you worked so hard in college and in the field to master and pulls it out from underneath you. It even takes the gold standard of our profession, the quantitative science of exposure assessment, and makes it look pretty darn rusty. Now with NM there is the potential to get some aspect of quantitative measurements, but the instruments are generally very expensive and getting an appropriate workplace personal exposure measurement can be very difficult if not impossible. The potential for workers getting exposures, however, is very real, as evidenced by a recent publication reporting worker exposures to polyacrylate nanoparticles in a Chinese factory (Song et al. 2009). With something this complex and challenging, how does a concept as simple as Control Banding (CB) save the day? Although many IHs have heard of CB, most of their knowledge comes from its application in the COSHH Essentials toolkit. While there is conflicting published research on COSHH Essentials and its value for risk assessments, almost all of the experts agree that it can be useful when no OELs are available (Zalk and Nelson 2008). It is this aspect of CB, its utility with uncertainty, that attracted international NM experts to recommend this qualitative risk assessment approach for NM. However, since their CB recommendation was only in theory, we took on the challenge of developing a working toolkit, the CB Nanotool (see Zalk et al. 2009 and Paik et al. 2008), as a means to perform a risk assessment and protect researchers at the Lawrence Livermore National Laboratory. While it's been acknowledged that engineered NM have potentially endless benefits for society, it became clear to us that the very properties that make nanotechnology so useful to industry could also make them dangerous to humans and the environment. Among the uncertainties and unknowns with NM are: the contribution of their physical structure to their toxicity, significant differences in their deposition and clearance in the lungs when compared to their parent material (PM), a lack of agreement on the appropriate indices for exposure to NM, and very little background information on exposure scenarios or populations at risk. Part of this lack of background information can be traced to the lack of risk assessments historically performed in the industry, with a recent survey indicating that 65% of companies working with NM are not doing any kind of NM-specific risk assessment as they focus on traditional PM methods for IH (Helland et al. 2009). The good news is that the amount of peer-reviewed publications that address environmental, health and safety aspects of NM has been increasing over the last few years; however, the percentage of these that address practical methods to reduce exposure and protect workers is orders of magnitude lower. Our intent in developing the CB Nanotool was to create a simplified approach that would protect workers while unraveling the mysteries of NM for experts and non-experts alike. Since such a large part of the toxicological effects of both the physical and chemical properties of NM were unknown, not to mention changing logarithmically as new NM research continues growing, we needed to account for this lack of information as part of the CB Nano

Zalk, D; Paik, S

2009-12-15T23:59:59.000Z

138

ARM: Shortwave Array Spectroradiometer-Hemispheric, VISible channel, high-sun angles [a0 data is uncalibrated  

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

Shortwave Array Spectroradiometer-Hemispheric, VISible channel, high-sun angles [a0 data is uncalibrated

Flynn, Connor

139

ARM: Shortwave Array Spectroradiometer-Hemispheric, VISible channel, low-sun angles [a0 data is uncalibrated  

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

Shortwave Array Spectroradiometer-Hemispheric, VISible channel, low-sun angles [a0 data is uncalibrated

Flynn, Connor

140

Behavioral/Systems/Cognitive Synchronous, Focally Modulated -Band Oscillations  

E-Print Network [OSTI]

, primarily synchronous -band voltage oscillations occur in the sensorimotor and frontal cortex of humansBehavioral/Systems/Cognitive Synchronous, Focally Modulated -Band Oscillations Characterize Local oscillations in the -frequency band ( 15­30Hz

Graybiel, Ann M.

Note: This page contains sample records for the topic "ground visible band" 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

High Field W-Band (95 GHz) EPR | EMSL  

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

High Field W-Band (95 GHz) EPR High Field W-Band (95 GHz) EPR The W-band pulsed EPR spectrometer, introduced in 2011, is one of only two of its design worldwide. It uses a...

142

ISM band to U-NII band frequency transverter and method of frequency transversion  

DOE Patents [OSTI]

A frequency transverter (10) and method for enabling bi-frequency dual-directional transfer of digitally encoded data on an RF carrier by translating between a crowded or otherwise undesirable first frequency band, such as the 2.4 GHz ISM band, and a less-crowded or otherwise desirable second frequency band, such as the 5.0 GHz-6.0 GHz U-NII band. In a preferred embodiment, the transverter (10) connects between an existing data radio (11) and its existing antenna (30), and comprises a bandswitch (12); an input RF isolating device (14); a transmuter (16); a converter (18); a dual output local oscillator (20); an output RF isolating device (22); and an antenna (24) tuned to the second frequency band. The bandswitch (12) allows for bypassing the transverter (10), thereby facilitating its use with legacy systems. The transmuter (14) and converter (16) are adapted to convert to and from, respectively, the second frequency band.

Stepp, Jeffrey David (Grandview, MO); Hensley, Dale (Grandview, MO)

2006-04-04T23:59:59.000Z

143

Effects of aerosol species on atmospheric visibility in Kaohsiung City, Taiwan  

SciTech Connect (OSTI)

Visibility data collected from Kaohsiung City, Taiwan, for the past two decades indicated that the air pollutants have significantly degraded visibility in recent years. During the study period, the seasonal mean visibilities in spring, summer, fall, and winter were only 5.4, 9.1, 8.2, and 3.4 km, respectively. To ascertain how urban aerosols influence the visibility, we conducted concurrent visibility monitoring and aerosol sampling in 1999 to identify the principal causes of visibility impairments in the region. In this study, ambient aerosols were sampled and analyzed for 11 constituents, including water-soluble ions and carbon materials, to investigate the chemical composition of Kaohsiung aerosols. Stepwise regression method was used to correlate the impact of aerosol species on visibility impairments. Both seasonal and diurnal variation patterns were found from the monitoring of visibility. Results showed that light scattering was attributed primarily to aerosols with sizes that range from 0.26 to 0.90 {mu}m, corresponding with the wavelength region of visible light, which accounted for {approximately} 72% of the light scattering coefficient. Sulfate was a dominant component that affected both the light scattering coefficient and the visibility in the region. On average, (NH{sub 4}){sup 2}SO{sub 4}, NH{sub 4}NO{sub 3}, total carbon, and fine particulate matter (PM2.5)-remainder contributed 53%, 17%, 16%, and 14% to total light scattering, respectively. An empirical regression model of visibility based on sulfate, elemental carbon, and humidity was developed, and the comparison indicated that visibility in an urban area could be properly simulated by the equation derived herein. 35 refs., 10 figs., 4 tabs.

Chang-Gai Lee; Chung-Shin Yuan; Jui-Cheng Chang; Ching Yuan [National Sun Yat-Sen University (Taiwan)

2005-07-01T23:59:59.000Z

144

The Health and Visibility Cost of Air Pollution: A Comparison of Estimation Methods  

E-Print Network [OSTI]

economics, air pollution, health effects, visibility,Cost of Health Effects of Motor Vehicle Air Pollution. UCD-of the health costs of air pollution (because individuals

Delucchi, Mark; Murphy, James; McCubbin, Donald

2002-01-01T23:59:59.000Z

145

Ground Penetrating Radar in Hydrogeophysics  

SciTech Connect (OSTI)

To meet the needs of a growing population and to provide us with a higher quality of life, increasing pressures are being placed on our environment through the development of agriculture, industry, and infrastructures. Soil erosion, groundwater depletion, salinization, and pollution have been recognized for decades as major threats to ecosystems and human health. More recently, the progressive substitution of fossil fuels by biofuels for energy production and climate change have been recognized as potential threats to our water resources and sustained agricultural productivity. The vadose zone mediates many of the processes that govern water resources and quality, such as the partition of precipitation into infiltration and runoff , groundwater recharge, contaminant transport, plant growth, evaporation, and energy exchanges between the Earth's surface and its atmosphere. It also determines soil organic carbon sequestration and carbon-cycle feedbacks, which could substantially impact climate change. The vadose zone's inherent spatial variability and inaccessibility precludes direct observation of the important subsurface processes. In a societal context where the development of sustainable and optimal environmental management strategies has become a priority, there is a strong prerequisite for the development of noninvasive characterization and monitoring techniques of the vadose zone. In particular, hydrogeophysical approaches applied at relevant scales are required to appraise dynamic subsurface phenomena and to develop optimal sustainability, exploitation, and remediation strategies. Among existing geophysical techniques, ground penetrating radar (GPR) technology is of particular interest for providing high-resolution subsurface images and specifically addressing water-related questions. Ground penetrating radar is based on the transmission and reception of VHF-UHF (30-3000 MHz) electromagnetic waves into the ground, whose propagation is determined by the soil electromagnetic properties and their spatial distribution. As the dielectric permittivity of water overwhelms the permittivity of other soil components, the presence of water in the soil principally governs GPR wave propagation. Therefore, GPR-derived dielectric permittivity is usually used as surrogate measure for soil water content. In the areas of unsaturated zone hydrology and water resources, GPR has been used to identify soil stratigraphy, to locate water tables, to follow wetting front movement, to estimate soil water content, to assist in subsurface hydraulic parameter identification, to assess soil salinity, and to support the monitoring of contaminants. The purpose of this special section of the Vadose Zone Journal is to present recent research advances and applications of GPR in hydrogeophysics, with a particular emphasis on vadose zone investigations. This special section includes contributions presented at the European Geosciences Union General Assembly 2006 (EGU 2006, Vienna, Austria) and the 11th International Conference on Ground Penetrating Radar (GPR 2006, Columbus, OH). The studies presented here deal with a wide range of surface and borehole GPR applications, including GPR sensitivity to contaminant plumes, new methods for soil water content determination, three-dimensional imaging of the subsurface, time-lapse monitoring of hydrodynamic events and inversion techniques for soil hydraulic properties estimation, and joint interpretation of GPR and electric resistivity tomography (ERT) data.

Hubbard, Susan; Lambot, S.; Binley, A.; Slob, E.; Hubbard, S.

2008-01-15T23:59:59.000Z

146

Synthesis of ZnO nanorod–nanosheet composite via facile hydrothermal method and their photocatalytic activities under visible-light irradiation  

SciTech Connect (OSTI)

ZnO composite films consisting of ZnO nanorods and nanosheets were prepared by low-temperature hydrothermal processing at 80 °C on seeded glass substrates. The seed layer was coated on glass substrates by sol–gel dip-coating and pre-heated at 300 °C for 10 min prior to hydrothermal growth. The size of the grain formed after pre-heat treatment was ?40 nm. A preferred orientation seed layer at the c-axis was obtained, which promoted vertical growth of the ZnO nanorod arrays and formation of the ZnO nanosheets. X-ray diffraction patterns and high-resolution transmission electron microscope (HR-TEM) images confirmed that the ZnO nanorods and nanosheets consist of single crystalline and polycrystalline structures, respectively. Room temperature photoluminescence spectra of the ZnO nanorod–nanosheet composite films exhibited band-edge ultraviolet (UV) and visible emission (blue and green) indicating the formation of ZnO crystals with good crystallinity and are supported by Raman scattering results. The formation of one-dimensional (1D) ZnO nanorod arrays and two-dimensional (2D) ZnO nanosheet films using seeded substrates in a single low-temperature hydrothermal step would be beneficial for realization of device applications that utilize substrates with limited temperature stability. The ZnO nanorods and nanosheets composite structure demonstrated higher photocatalytic activity during degradation of aqueous methylene blue under visible-light irradiation. -- Graphical abstract: Schematic illustration of ZnO nanorod–nanosheet composite structure formation by hydrothermal at low-temperature of 80 °C against time. Highlights: • Novel simultaneous formation of ZnO nanorods and nanosheets composite structure. • Facile single hydrothermal step formation at low-temperature. • Photoluminescence showed ultraviolet and visible emission. • Feasible application on substrates with low temperature stability. • Improved photocatalytic activity under visible-light irradiation.

Tan, Wai Kian [Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580 (Japan); Abdul Razak, Khairunisak; Lockman, Zainovia [School of Materials and Mineral Resources, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang (Malaysia); Kawamura, Go; Muto, Hiroyuki [Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580 (Japan); Matsuda, Atsunori, E-mail: matsuda@ee.tut.ac.jp [Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580 (Japan)

2014-03-15T23:59:59.000Z

147

The Visible and Near Infrared module of EChO  

E-Print Network [OSTI]

The Visible and Near Infrared (VNIR) is one of the modules of EChO, the Exoplanets Characterization Observatory proposed to ESA for an M-class mission. EChO is aimed to observe planets while transiting by their suns. Then the instrument had to be designed to assure a high efficiency over the whole spectral range. In fact, it has to be able to observe stars with an apparent magnitude Mv= 9-12 and to see contrasts of the order of 10-4 - 10-5 necessary to reveal the characteristics of the atmospheres of the exoplanets under investigation. VNIR is a spectrometer in a cross-dispersed configuration, covering the 0.4-2.5 micron spectral range with a resolving power of about 330 and a field of view of 2 arcsec. It is functionally split into two channels respectively working in the 0.4-1 and 1.0-2.5 micron spectral ranges. Such a solution is imposed by the fact the light at short wavelengths has to be shared with the EChO Fine Guiding System (FGS) devoted to the pointing of the stars under observation. The spectromete...

Adriani, A; Gambicorti, L; Focardi, M; Oliva, E; Farina, M; Di Giorgio, A M; Santoli, F; Pace, E; Piccioni, G; Filacchione, G; Pancrazzi, M; Tozzi, A; Micela, G

2014-01-01T23:59:59.000Z

148

System-level, Unified In-band and Out-of-band Dynamic Thermal Control  

E-Print Network [OSTI]

of the decrease in computation capacity. Less studied are out-of-band techniques (e.g. CPU cooling fans [10]) that operate completely outside the critical performance path of an application. Out-of-band techniques cool system slowdowns or shutdowns. Techniques such as dynamically scaling down the voltage of the CPUs

149

Energy Band Model Based on Effective Mass  

E-Print Network [OSTI]

In this work, we demonstrate an alternative method of deriving an isotropic energy band model using a one-dimensional definition of the effective mass and experimentally observed dependence of mass on energy. We extend the effective mass definition to anti-particles and particles with zero rest mass. We assume an often observed linear dependence of mass on energy and derive a generalized non-parabolic energy-momentum relation. The resulting non-parabolicity leads to velocity saturation at high particle energies. We apply the energy band model to free relativistic particles and carriers in solid state materials and obtain commonly used dispersion relations and experimentally confirmed effective masses. We apply the model to zero rest mass particles in graphene and propose using the effective mass for photons. Therefore, it appears that the new energy band model based on the effective mass can be applied to relativistic particles and carriers in solid state materials.

Viktor Ariel

2012-09-06T23:59:59.000Z

150

Band filling effects on temperature performance of intermediate band quantum wire solar cells  

SciTech Connect (OSTI)

Detailed studies of solar cell efficiency as a function of temperature were performed for quantum wire intermediate band solar cells grown on the (311)A plane. A remotely doped one-dimensional intermediate band made of self-assembled In{sub 0.4}Ga{sub 0.6}As quantum wires was compared to an undoped intermediate band and a reference p-i-n GaAs sample. These studies indicate that the efficiencies of these solar cells depend on the population of the one-dimensional band by equilibrium free carriers. A change in this population by free electrons under various temperatures affects absorption and carrier transport of non-equilibrium carriers generated by incident light. This results in different efficiencies for both the doped and undoped intermediate band solar cells in comparison with the reference GaAs p-i-n solar cell device.

Kunets, Vas. P., E-mail: vkunets@uark.edu; Furrow, C. S.; Ware, M. E.; Souza, L. D. de; Benamara, M.; Salamo, G. J. [Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Mortazavi, M. [Department of Chemistry and Physics, University of Arkansas at Pine Bluff, Pine Bluff, Arkansas 71601 (United States)

2014-08-28T23:59:59.000Z

151

UNIDENTIFIED INFRARED EMISSION BANDS: PAHs or MAONs?  

SciTech Connect (OSTI)

We suggest that the carrier of the unidentified infrared emission (UIE) bands is an amorphous carbonaceous solid with mixed aromatic/aliphatic structures, rather than free-flying polycyclic aromatic hydrocarbon molecules. Through spectral fittings of the astronomical spectra of the UIE bands, we show that a significant amount of the energy is emitted by the aliphatic component, implying that aliphatic groups are an essential part of the chemical structure. Arguments in favor of an amorphous, solid-state structure rather than a gas-phase molecule as a carrier of the UIE are also presented.

Sun Kwok; Yong Zhang, E-mail: sunkwok@hku.hk [Department of Physics, University of Hong Kong, Pokfulam Road, Hong Kong (Hong Kong)

2013-07-01T23:59:59.000Z

152

Visibility-Based Strategies for Tracking and Searching Unpredictable Coherent Targets Among Known Obstacles  

E-Print Network [OSTI]

Visibility-Based Strategies for Tracking and Searching Unpredictable Coherent Targets Among Known Obstacles Christopher Vo Jyh-Ming Lien MASC group, Dept. of Computer Science, George Mason University http that incorporate informed search to regain visibility of targets when they escape the camera's view, with promising

Lien, Jyh-Ming

153

2D and 3D Visibility in Discrete Geometry: an application to discrete geodesic paths  

E-Print Network [OSTI]

1 2D and 3D Visibility in Discrete Geometry: an application to discrete geodesic paths D discrete geodesic paths in discrete domain with obstacles. This allows us to introduce a new geodesic metric in discrete geometry. Keywords: discrete visibility, geodesic path, distance transform, discrete

Boyer, Edmond

154

To appear in Proceedings of ACRA 2004 1 Visible Spectrum Optical Communication and  

E-Print Network [OSTI]

To appear in Proceedings of ACRA 2004 1 Visible Spectrum Optical Communication and Distance Sensing an underwater communication system for a swarm of submersibles, we de- veloped an optical communication, emitting light in the green and blue part of the visible spectrum. This paper presents ex- perimental

Trumpf, Jochen

155

Increased Climate Variability Is More Visible Than Global Warming: A General  

E-Print Network [OSTI]

Increased Climate Variability Is More Visible Than Global Warming: A General System@utep.edu Abstract While global warming is a statistically confirmed long-term phenomenon, its most visible than the global warming itself. 1 Formulation of the Problem What is global warming. The term "global

Kreinovich, Vladik

156

A distributed Approach for Access and Visibility Task under Ergonomic Constraints with a Manikin  

E-Print Network [OSTI]

A distributed Approach for Access and Visibility Task under Ergonomic Constraints with a Manikin, to assess an efficient path planner for a manikin for access and visibility task under ergonomic constraints a way to explore areas such as maintenance or ergonomics of the product that were traditionally ignored

Paris-Sud XI, Université de

157

H-band thermal emission from the 0.79-day period planet WASP-19b  

E-Print Network [OSTI]

We present the first ground-based detection of thermal emission from an exoplanet in the H-band. Using HAWK-I on the VLT, we observed an occultation of WASP-19b by its G8V-type host star. WASP-19b is a Jupiter-mass planet with an orbital period of only 0.79 d, and thus, being highly irradiated, is expected to be hot. We measure an H-band occultation depth of (0.259 +0.046 -0.044) %. A cloud-free model of the planet's atmosphere, with no redistribution of energy from day-side to night-side, under-predicts the planet/star flux density ratio by a factor of two. As the stellar parameters, and thus the level of planetary irradiation, are well-constrained by measurement, it is likely that our model of the planet's atmosphere is too simple.

Anderson, D R; Maxted, P F L; Barman, T S; Cameron, A Collier; Hellier, C; Queloz, D; Smalley, B; Triaud, A H M J

2010-01-01T23:59:59.000Z

158

Triaxial shape coexistence and new aligned band in {sup 178}Os  

SciTech Connect (OSTI)

High spin states in {sup 178}Os were studied by means of {sup 165}Ho({sup 20}Ne,p6n){sup 178}Os fusion evaporation reaction at a beam energy of 150 MeV, using a clover detector array. Several new transitions belonging to {sup 178}Os were placed in a level scheme and a new aligned rotational band was observed in addition to earlier known bands. Spin-parity assignments for most of the proposed levels were made using the deduced directional correlation orientation and polarization measurements for the de-exciting transitions. Experimental results are compared with the projected angular momentum deformed Hartree-Fock model calculations and cranked Woods-Saxon model calculations. This nucleus is predicted to be prolate deformed in the ground state but the {gamma}-softness at higher excitation is revealed by the cranked Woods-Saxon model and the geometrical asymmetric model calculations.

Kumar, Rajesh; Govil, I. M. [Department of Physics, Panjab University, Chandigarh-160014 (India); Dhal, A.; Chaturvedi, L. [Department of Physics, Banaras Hindu University, Varanasi-220115, Uttar Pradesh (India); Praharaj, C. R. [Institute of Physics, Bhubaneshwar-751005 (India); Rath, A. K. [Department of Physics, Sambalpur University, Jyoti Vihar, Burla, Sambalpur-768019, Orissa (India); Kumar, G. Kiran [Department of Physics, Maharaja Sayajirao University, Vadodara, Baroda 390002 (India); Basu, S. K. [Variable Energy Cyclotron Center, Bidhan Nagar, Calcutta-700064 (India); Chakraborty, A.; Krishichayan; Mukhopadhyay, S.; Pattabiraman, N. S.; Ghugre, S. S.; Sinha, A. K. [UGC-DAE Consortium for Scientific Research, Calcutta Centre, Sector III LB-8, Bidhan Nagar, Kolkata-700098 (India)

2009-11-15T23:59:59.000Z

159

Evaluation of analytical methods to interpret ground deformations due to soft ground tunneling  

E-Print Network [OSTI]

An in depth study was undertaken to evaluate the effectiveness of analytical solutions in describing ground movements induced by soft ground tunneling. The analytical solutions that were examined consider both isotropic ...

Zymnis, Despina M

2009-01-01T23:59:59.000Z

160

Special Section on Ground Water Research in China Featured in This Issue of Ground Water  

E-Print Network [OSTI]

of Ground Water by Xun Zhou1, Jiu J. Jiao2, and Mary P. Anderson3 Contained in this issue of Ground Water, Groundwater Resources and the Related Environ- Hydrogeologic Problems in China, Beijing: Seismological Press

Jiao, Jiu Jimmy

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to obtain the most current and comprehensive results.


161

Dirac Coupled Channel Analyses of the 2$^-$ Gamma Vibrational band excitation in $^{20}$Ne  

E-Print Network [OSTI]

Dirac coupled channel analyses are performed using optical potential model for the high-lying excited states that belong to the 2$^-$ gamma vibrational band at the 800 MeV unpolarized proton inelastic scatterings from $^{20}$Ne. The first order vibrational collective models are used to obtain the transition optical potentials to describe the high-lying excited vibrational collective states and Lorentz-covariant scalar and time-like vector potentials are used as direct optical potentials. The complicated Dirac coupled channel equations are solved phenomenologically to reproduce the differential cross sections data by varying the optical potential and deformation parameters using minimum chi-square method. It is found that relativistic Dirac coupled channel calculation could describe the excited states of the 2$^-$ gamma vibrational band in $^{20}$Ne much better than the nonrelativistic coupled channel calculation, especially for the 2$^-$ and 3$^-$ states of the band. It is shown that the multistep excitation process via channel coupling with the $3^-$ state is essential to describe the $2^-$ state excitation and pure direct transition from the ground state is dominant for the 3$^-$ state excitation of the 2$^-$ gamma vibrational band in $^{20}$Ne.

Sugie Shim

2014-07-22T23:59:59.000Z

162

The B$^2\\Pi-$X$^2\\Pi$ electronic origin band of $^{13}$C$_6$H  

E-Print Network [OSTI]

The rotationally resolved spectrum of the B$^2\\Pi-$X$^2\\Pi$ electronic origin band transition of $^{13}$C$_6$H is presented. The spectrum is recorded using cavity ring-down spectroscopy in combination with supersonic plasma jets by discharging a $^{13}$C$_2$H$_2$/He/Ar gas mixture. A detailed analysis of more than a hundred fully-resolved transitions allows for an accurate determination of the spectroscopic parameters for both the ground and electronically excited state of $^{13}$C$_6$H.

Bacalla, Xavier; Salumbides, Edcel J; Haddad, Mohammad Ali; Linnartz, Harold; Ubachs, Wim

2015-01-01T23:59:59.000Z

163

International Borders, Ground Water Flow, and Hydroschizophrenia  

E-Print Network [OSTI]

beginning to be recognized. The hidden nature of ground water and the lack of international law governingInternational Borders, Ground Water Flow, and Hydroschizophrenia by Todd Jarvis1,2, Mark Giordano3 conducted on transboundary water, transboundary water law, and the mitigation of transboundary water

Wolf, Aaron

164

Rotor Blades and Ground Effect Richard Purvis  

E-Print Network [OSTI]

Rotor Blades and Ground Effect Richard Purvis Department of Mathematics University College London to examine various aspects of rotor blade flows and ground effect. It explores two- and three- dimensional flows, generally concentrating upon regimes that have a degree of rel- evance to typical rotor blade

Purvis, Richard

165

Ground Turkey and Potato Plate Ingredients  

E-Print Network [OSTI]

Ground Turkey and Potato Plate Ingredients: 1 onion 1/2 pound ground turkey 1 cup ketchup, low sodium 4 medium potatoes 4 ounces cheddar cheese, low-fat Directions 1. Cut the ends off of the onion. Meanwhile pierce potatoes in several places with fork. Place on baking dish in microwave oven. Microwave

Liskiewicz, Maciej

166

Ground water provides drinking water, irrigation for  

E-Print Network [OSTI]

Ground water provides drinking water, irrigation for crops and water for indus- tries. It is also connected to surface waters, and maintains the flow of rivers and streams and the level of wetlands- tion of those along Lake Michigan, most communi- ties, farms and industries still rely on ground water

Saldin, Dilano

167

Ground Loops for Heat Pumps and Refrigeration  

E-Print Network [OSTI]

Ground loops are used for water source heat pumps. Refrigeration can be put on a ground loop. Water-cooled condensing units are more efficient than air-cooled, and they can be put indoors. Indoor location makes piping for desuperheater hot water...

Braud, H. J.

1986-01-01T23:59:59.000Z

168

Shear banding in soft glassy materials  

E-Print Network [OSTI]

Many soft materials, including foams, dense emulsions, micro gel bead suspensions, star polymers, dense packing of surfactant onion micelles, and textured morphologies of liquid crystals, share the basic "glassy" features of structural disorder and metastability. These in turn give rise to several notable features in the low frequency shear rheology (deformation and flow properties) of these materials: in particular, the existence of a yield stress below which the material behaves like a solid, and above which it flows like a liquid. In the last decade, intense experimental activity has also revealed that these materials often display a phenomenon known as shear banding, in which the flow profile across the shear cell exhibits macroscopic bands of different viscosity. Two distinct classes of yield stress fluid have been identified: those in which the shear bands apparently persist permanently (for as long as the flow remains applied), and those in which banding arises only transiently during a process in which a steady flowing state is established out of an initial rest state (for example, in a shear startup or step stress experiment). After surveying the motivating experimental data, we describe recent progress in addressing it theoretically, using the soft glassy rheology model and a simple fluidity model. We also briefly place these theoretical approaches in the context of others in the literature, including elasto-plastic models, shear transformation zone theories, and molecular dynamics simulations. We discuss finally some challenges that remain open to theory and experiment alike.

Suzanne M. Fielding

2014-08-20T23:59:59.000Z

169

X-Band Photoinjector Beam Dynamics  

SciTech Connect (OSTI)

SLAC is studying the feasibility of using an X-band RF photocathode gun to produce low emittance bunches for applications such as a mono-energetic MeV {gamma} ray source (in collaboration with LLNL) and a photoinjector for a compact FEL. Beam dynamics studies are being done for a configuration consisting of a 5.5-cell X-band gun followed by several 53-cell high-gradient X-band accelerator structures. A fully 3D program, ImpactT, is used to track particles taking into account space charge forces, short-range longitudinal and transverse wakefields, and the 3D rf fields in the structures, including the quadrupole component of the couplers. The effect of misalignments of the various elements, including the drive-laser, gun, solenoid and accelerator structures, are evaluated. This paper presents these results and estimates of the expected bunch emittance vs cathode gradient, and the effects of mixing between the fundamental and off-frequency longitudinal modes. An X-band gun at SLAC has been shown to operate reliably with a 200 MV/m acceleration gradient at the cathode, which is nearly twice the 115 MV/m acceleration gradient in the LCLS gun. The higher gradient should roughly balance the space charge related transverse emittance growth for the same bunch charge but provide a 3-4 times shorter bunch length. The shorter length would make the subsequent bunch compression easier and allow for a more effective use of emittance exchange. Such a gun can also be used with an X-band linac to produce a compact FEL or g ray source that would require rf sources of only one frequency for beam generation and acceleration. The feasibility of using an X-band rf photocathode gun and accelerator structures to generate high quality electron beams for compact FELs and g ray sources is being studied at SLAC. Results from the X-band photoinjector beam dynamics studies are reported in this paper.

Zhou, Feng; /SLAC; Adolphsen, Chris; /SLAC; Ding, Yuantao; /SLAC; Li, Zenghai; /SLAC; Vlieks, Arnold; /SLAC

2011-12-13T23:59:59.000Z

170

Effect of silver incorporation in phase formation and band gap tuning of tungsten oxide thin films  

SciTech Connect (OSTI)

Silver incorporated tungsten oxide thin films are prepared by RF magnetron sputtering technique. The effect of silver incorporation in micro structure evolution, phase enhancement, band gap tuning and other optical properties are investigated using techniques such as x-ray diffraction, micro-Raman spectroscopy, atomic force microscopy, scanning electron microscopy, energy dispersive x-ray spectroscopy, and UV-Visible spectroscopy. Effect of silver addition in phase formation and band gap tuning of tungsten oxide thin films are investigated. It is found that the texturing and phase formation improves with enhancement in silver content. It is also found that as the silver incorporation enhances the thickness of the films increases at the same time the strain in the film decreases. Even without annealing the desired phase can be achieved by doping with silver. A broad band centered at the wavelength 437 nm is observed in the absorption spectra of tungsten oxide films of higher silver incorporation and this can be attributed to surface plasmon resonance of silver atoms present in the tungsten oxide matrix. The transmittance of the films is decreased with increase in silver content which can be due to increase in film thickness, enhancement of scattering, and absorption of light caused by the increase of grain size, surface roughness and porosity of films and enhanced absorption due to surface plasmon resonance of silver. It is found that silver can act as the seed for the growth of tungsten oxide grains and found that the grain size increases with silver content which in turn decreases the band gap of tungsten oxide from 3.14 eV to 2.70 eV.

Jolly Bose, R.; Kumar, R. Vinod; Sudheer, S. K.; Mahadevan Pillai, V. P. [Department of Optoelectronics, University of Kerala, Kariyavattom, Thiruvananthapuram, Kerala 695581 (India); Reddy, V. R.; Ganesan, V. [UGC - DAE Consortium for Scientific Research, Khandwa Road, Indore 452017, Madhyapradesh (India)

2012-12-01T23:59:59.000Z

171

Photosensitivity of the Ni-A state of [NiFe] hydrogenase from Desulfovibrio vulgaris Miyazaki F with visible light  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Ni-A state of [NiFe] hydrogenase showed light sensitivity. Black-Right-Pointing-Pointer New FT-IR bands were observed with light irradiation of the Ni-A state. Black-Right-Pointing-Pointer EPR g-values of the Ni-A state shifted upon light irradiation. Black-Right-Pointing-Pointer The light-induced state converted back to the Ni-A state under the dark condition. -- Abstract: [NiFe] hydrogenase catalyzes reversible oxidation of molecular hydrogen. Its active site is constructed of a hetero dinuclear Ni-Fe complex, and the oxidation state of the Ni ion changes according to the redox state of the enzyme. We found that the Ni-A state (an inactive unready, oxidized state) of [NiFe] hydrogenase from Desulfovibrio vulgaris Miyazaki F (DvMF) is light sensitive and forms a new state (Ni-AL) with irradiation of visible light. The Fourier transform infrared (FT-IR) bands at 1956, 2084 and 2094 cm{sup -1} of the Ni-A state shifted to 1971, 2086 and 2098 cm{sup -1} in the Ni-AL state. The g-values of g{sub x} = 2.30, g{sub y} = 2.23 and g{sub z} = 2.01 for the signals in the electron paramagnetic resonance (EPR) spectrum of the Ni-A state at room temperature varied for -0.009, +0.012 and +0.010, respectively, upon light irradiation. The light-induced Ni-AL state converted back immediately to the Ni-A state under dark condition at room temperature. These results show that the coordination structure of the Fe site of the Ni-A state of [NiFe] hydrogenase is perturbed significantly by light irradiation with relatively small coordination change at the Ni site.

Osuka, Hisao [Graduate School of Life Science, University of Hyogo, 3-2-1, Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan) [Graduate School of Life Science, University of Hyogo, 3-2-1, Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan); Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma-shi, Nara 630-0192 (Japan); Shomura, Yasuhito; Komori, Hirofumi; Shibata, Naoki [Graduate School of Life Science, University of Hyogo, 3-2-1, Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan)] [Graduate School of Life Science, University of Hyogo, 3-2-1, Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan); Nagao, Satoshi [Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma-shi, Nara 630-0192 (Japan)] [Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma-shi, Nara 630-0192 (Japan); Higuchi, Yoshiki, E-mail: hig@sci.u-hyogo.ac.jp [Graduate School of Life Science, University of Hyogo, 3-2-1, Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan) [Graduate School of Life Science, University of Hyogo, 3-2-1, Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan); CREST, JST, Gobancho, Chiyoda-ku, Tokyo 102-0076 (Japan); Hirota, Shun, E-mail: hirota@ms.naist.jp [Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma-shi, Nara 630-0192 (Japan) [Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma-shi, Nara 630-0192 (Japan); CREST, JST, Gobancho, Chiyoda-ku, Tokyo 102-0076 (Japan)

2013-01-04T23:59:59.000Z

172

Quantum Transduction of Telecommunications-band Single Photons from a Quantum Dot by Frequency Upconversion  

E-Print Network [OSTI]

The ability to transduce non-classical states of light from one wavelength to another is a requirement for integrating disparate quantum systems that take advantage of telecommunications-band photons for optical fiber transmission of quantum information and near-visible, stationary systems for manipulation and storage. In addition, transducing a single-photon source at 1.3 {\\mu}m to visible wavelengths for detection would be integral to linear optical quantum computation due to the challenges of detection in the near-infrared. Recently, transduction at single-photon power levels has been accomplished through frequency upconversion, but it has yet to be demonstrated for a true single-photon source. Here, we transduce the triggered single-photon emission of a semiconductor quantum dot at 1.3 {\\mu}m to 710 nm with a total detection (internal conversion) efficiency of 21% (75%). We demonstrate that the 710 nm signal maintains the quantum character of the 1.3 {\\mu}m signal, yielding a photon anti-bunched second-order intensity correlation, g^(2)(t), that shows the optical field is composed of single photons with g^(2)(0) = 0.165 < 0.5.

Matthew T. Rakher; Lijun Ma; Oliver Slattery; Xiao Tang; Kartik Srinivasan

2011-08-19T23:59:59.000Z

173

Quantum-Dot Intermediate-Band Solar Cells with Inverted Band Alignment  

SciTech Connect (OSTI)

The intermediate-band concept was proposed over a decade ago as a possible route to increase the efficiency of single-junction solar cells. Despite a number of experimental attempts to realize this concept, no efficiency improvement over conventional single-junction solar cells has so far been demonstrated. This is likely due to the fact that the intermediate band itself acts to enhance electron-hole recombination. In this work we propose a novel intermediate-band solar-cell architecture based on doped semiconductor nanostructures having an inverted type-I band alignment with the surrounding host. The recombination of carriers in the nanostructures is prevented by ultra-fast charge transfer to the host, thereby removing the main obstacle to achieve high conversion efficiency.

Francheschetti, A.; Lany, S.; Bester, G.

2008-01-01T23:59:59.000Z

174

Band structure engineering of anatase TiO{sub 2} by metal-assisted P-O coupling  

SciTech Connect (OSTI)

In this work, we demonstrate that the metal-assisted P-O coupling is an effective approach to improve the photoelectrochemical properties of TiO{sub 2}. The (Sc + P) and (In + P) codoping effects on electronic structures and photocatalytic activities of anatase TiO{sub 2} are examined by performing hybrid density functional theory calculations. It is found that the coupling of P dopant with the second-nearest neighboring O atom assisted by acceptor metals (Sc/In) leads to the fully occupied and delocalized intermediate bands within the band gap of anatase TiO{sub 2}, which is driven by the P-O antibonding states (?*). This metal-assisted P-O coupling can prevent the recombination of photogenerated electron-hole pairs and effectively reduce the band gap of TiO{sub 2}. Moreover, the band edge alignments in (Sc + P) and (In + P) codoped anatase TiO{sub 2} are desirable for water-splitting. The calculated optical absorption curves indicate that (Sc + P) and (In + P) codoping in anatase TiO{sub 2} can also effectively enhance the visible light absorption.

Wang, Jiajun; Meng, Qiangqiang [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China)] [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); Huang, Jing [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China) [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei, Anhui 230601 (China); Li, Qunxiang, E-mail: liqun@ustc.edu.cn; Yang, Jinlong [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China) [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2014-05-07T23:59:59.000Z

175

Scaling Considerations in Ground State Quantum Computation  

E-Print Network [OSTI]

We study design challenges associated with realizing a ground state quantum computer. In such a computer, the energy gap between the ground state and first excited state must be sufficiently large to prevent disruptive excitations. Here, an estimate is provided of this gap as a function of computer size. We then address the problem of detecting the output of a ground state quantum computer. It is shown that the exponential detection difficulties that appear to be present at first can be overcome in a straightforward manner by small design changes.

Ari Mizel; M. W. Mitchell; Marvin L. Cohen

2000-07-02T23:59:59.000Z

176

Facile preparation of sphere-like copper ferrite nanostructures and their enhanced visible-light-induced photocatalytic conversion of benzene  

SciTech Connect (OSTI)

Graphical abstract: - Highlights: • Spinel CuFe{sub 2}O{sub 4} nanospheres were successfully synthesized via a facile method. • CuFe{sub 2}O{sub 4} nanospheres showed high photocatalytic activity toward benzene. • Ethyl acetate, carboxylic acid and aldehyde were the intermediate products. - Abstract: Spinel copper ferrite nanospheres with diameters of about 116 nm were synthesized in high yield via a facile solvothermal route. The prepared nanospheres had cubic spinel structure and exhibited good size uniformity and regularity. The band-gap energy of CuFe{sub 2}O{sub 4} nanospheres was calculated to be about 1.69 eV, indicating their potential visible-light-induced photocatalytic activity. The dramatically enhanced photocatalytic activity of the CuFe{sub 2}O{sub 4} nanospheres was evaluated via the photocatalytic conversion of benzene under Xe lamp irradiation. By using the in situ FTIR technique, ethyl acetate, carboxylic acid and aldehyde could be regarded as the intermediate products, and CO{sub 2} was produced as the final product during the reaction process. This study provided new insight into the design and preparation of functional nanomaterials with sphere structure in high yield, and the as-grown architectures demonstrated an excellent ability to remove organic pollutants in the atmosphere.

Shen, Yu, E-mail: shenyuqing0322@gmail.com [School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028 (China); Key Laboratory of Industrial Ecology and Environmental Engineering and State Key Laboratory of Fine Chemical, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China); Wu, Yanbo; Xu, Hongfeng; Fu, Jie [School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028 (China); Li, Xinyong; Zhao, Qidong; Hou, Yang [Key Laboratory of Industrial Ecology and Environmental Engineering and State Key Laboratory of Fine Chemical, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China)

2013-10-15T23:59:59.000Z

177

X-Band RF Gun Development  

SciTech Connect (OSTI)

In support of the MEGa-ray program at LLNL and the High Gradient research program at SLAC, a new X-band multi-cell RF gun is being developed. This gun, similar to earlier guns developed at SLAC for Compton X-ray source program, will be a standing wave structure made of 5.5 cells operating in the pi mode with copper cathode. This gun was designed following criteria used to build SLAC X-band high gradient accelerating structures. It is anticipated that this gun will operate with surface electric fields on the cathode of 200 MeV/m with low breakdown rate. RF will be coupled into the structure through a final cell with symmetric duel feeds and with a shape optimized to minimize quadrupole field components. In addition, geometry changes to the original gun, operated with Compton X-ray source, will include a wider RF mode separation, reduced surface electric and magnetic fields.

Vlieks, Arnold; Dolgashev, Valery; Tantawi, Sami; /SLAC; Anderson, Scott; Hartemann, Fred; Marsh, Roark; /LLNL, Livermore

2012-06-22T23:59:59.000Z

178

Fabrication of photonic band gap materials  

DOE Patents [OSTI]

A method for forming a periodic dielectric structure exhibiting photonic band gap effects includes forming a slurry of a nano-crystalline ceramic dielectric or semiconductor material and monodisperse polymer microspheres, depositing a film of the slurry on a substrate, drying the film, and calcining the film to remove the polymer microspheres therefrom. The film may be cold-pressed after drying and prior to calcining. The ceramic dielectric or semiconductor material may be titania, and the polymer microspheres may be polystyrene microspheres.

Constant, Kristen (Ames, IA); Subramania, Ganapathi S. (Ames, IA); Biswas, Rana (Ames, IA); Ho, Kai-Ming (Ames, IA)

2002-01-15T23:59:59.000Z

179

Permanent magnet focused X-band photoinjector  

DOE Patents [OSTI]

A compact high energy photoelectron injector integrates the photocathode directly into a multicell linear accelerator with no drift space between the injection and the linac. High electron beam brightness is achieved by accelerating a tightly focused electron beam in an integrated, multi-cell, X-band rf linear accelerator (linac). The photoelectron linac employs a Plane-Wave-Transformer (PWT) design which provides strong cell-to-cell coupling, easing manufacturing tolerances and costs.

Yu, David U. L. (Rancho Palos Verdes, CA); Rosenzweig, James (Los Angeles, CA)

2002-09-10T23:59:59.000Z

180

The Negative Parity Bands in $^{156}$Gd  

E-Print Network [OSTI]

The high flux reactor of the Institut Laue-Langevin is the world most intense neutron source for research. Using the ultra high-resolution crystal spectrometers GAMS installed at the in-pile target position H6/H7 it is possible to measure nuclear state lifetimes using the Gamma Ray Induced Recoil (GRID) technique. In bent crystal mode, the spectrometers allow to perform spectroscopy with a dynamic range of up to six orders magnitude. At a very well collimated external neutron beam it is possible to install a highly efficient germanium detector array to obtain coincidences and angular correlations. The mentioned techniques were used to study the first two negative parity bands in $^{156}$Gd. These bands have been in the focus of interest since they seem to show signatures of a tetrahedral symmetry. A surprisingly high B(E2) value of about 1000 W.u. for the $4^- \\rightarrow 2^-$ transition was discovered. It indicates that the two first negative parity bands cannot be considered to be signature partners.

Michael Jentschel; Loic Sengele; Dominique Curien; Jerzy Dudek; Florent Haas

2014-04-23T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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.


182

Using the visibility complex for radiosity computation Rachel Orti Fredo Durand Stephane Rivi`ere Claude Puech  

E-Print Network [OSTI]

to be strictly recomputed. In computational geometry, a data structure called the visibility complex has recentlyUsing the visibility complex for radiosity computation Rachel Orti Fr´edo Durand St´ephane Rivi in those calculations. We propose the use of the visibility complex for radiosity calculations

Boyer, Edmond

183

A note on classical ground state energies  

E-Print Network [OSTI]

The pair-specific ground state energy of Newtonian N-body systems grows monotonically in N. This furnishes a whole family of simple new tests for minimality of putative ground state energies obtained through computer experiments. Inspection of several publically available lists of such computer-experimentally obtained putative ground state energies has yielded several dozen instances which failed (at least) one of these tests. Although the correct ground state energy is not revealed by this method, it does yield a better upper bound on it than the experimentally found value whenever the latter fails a monotonicity test. The surveyed N-body systems include in particular N point charges with 2- or 3-dimensional Coulomb pair interactions, placed either on the unit 2-sphere or on a 2-torus (a.k.a. Thomson, Fekete, or Riesz problems).

Michael K. -H. Kiessling

2009-05-28T23:59:59.000Z

184

Commonality of ground systems in launch operations  

E-Print Network [OSTI]

NASA is examining the utility of requiring a certain degree of commonality in both flight and ground systems in the Constellation Program. While the benefits of commonality seem obvious in terms of minimizing upfront ...

Quinn, Shawn M

2008-01-01T23:59:59.000Z

185

Ground Water Protection Act (New Mexico)  

Broader source: Energy.gov [DOE]

The purpose of the Ground Water Protection Act is to provide substantive provisions and funding mechanisms to the extent that funds are available to enable the state to take corrective action at...

186

Building an entanglement measure on physical ground  

E-Print Network [OSTI]

We introduce on physical grounds a new measure of multipartite entanglement for pure states. The function we define is discriminant and monotone under LOCC and moreover can be expressed in terms of observables of the system.

D. Teresi; A. Napoli; A. Messina

2008-05-28T23:59:59.000Z

187

Background-subtraction using contour-based fusion of thermal and visible imagery  

E-Print Network [OSTI]

rights reserved. Keywords: Background-subtraction; Fusion; Thermal imagery; Infrared; FLIR; Contour of the electromagnetic spectrum, long-wave infrared (thermal) and visible light. Thermal (FLIR) and color video cameras

Davis, James W.

188

Shielding and grounding in large detectors  

SciTech Connect (OSTI)

Prevention of electromagnetic interference (EMI), or ``noise pickup,`` is an important design aspect in large detectors in accelerator environments. Shielding effectiveness as a function of shield thickness and conductivity vs the type and frequency of the interference field is described. Noise induced in transmission lines by ground loop driven currents in the shield is evaluated and the importance of low shield resistance is emphasized. Some measures for prevention of ground loops and isolation of detector-readout systems are discussed.

Radeka, V.

1998-09-01T23:59:59.000Z

189

Ground Source Heat Pump System Data Analysis  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Source Heat Pump Subprogram Overview Ground

190

Ground water protection management program plan  

SciTech Connect (OSTI)

U.S. Department of Energy (DOE) Order 5400.1 requires the establishment of a ground water protection management program to ensure compliance with DOE requirements and applicable federal, state, and local laws and regulations. The Uranium Mill Tailings Remedial Action (UMTRA) Project Office was prepared this Ground Water Protection Management Program Plan (ground water protection plan) whose scope and detail reflect the program`s significance and address the seven activities required in DOE Order 5400.1, Chapter III, for special program planning. This ground water protection plan highlights the methods designed to preserve, protect, and monitor ground water resources at UMTRA Project processing and disposal sites. The plan includes an overview of the remedial action status at the 24 designated processing sites and identifies technical guidance documents and site-specific documents for the UMTRA Project ground water protection management program. In addition, the plan addresses the general information required to develop a water resources protection strategy at the permanent disposal sites. Finally, the plan describes ongoing activities that are in various stages of development at UMTRA Project sites.

Not Available

1994-02-01T23:59:59.000Z

191

The effects of air pollution on visibility at Edwards AFB, California  

E-Print Network [OSTI]

THE EFFECTS OF AIR POLLUTION ON VISIBILITY AT EDWARDS AFB, CALIFORNIA A Thesis by JEFFREY SCOTT TONGUE Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... May 1987 Major Subject: Meteorology THE EFFECTS OF AIR POLLUTION ON VISIBILITY AT EDWARDS AFB, CALIFORNIA A Thesis by JEFFREY SCOTT TONGUE Approved as to style and content by: Walter K. Henry (Chairman of Committee) Kenneth C. Brundidge...

Tongue, Jeffrey Scott

2012-06-07T23:59:59.000Z

192

Transformation Optics with Photonic Band Gap Media  

E-Print Network [OSTI]

We introduce a class of optical media based on adiabatically modulated, dielectric-only, and potentially extremely low-loss, photonic crystals. The media we describe represent a generalization of the eikonal limit of transformation optics (TO). The foundation of the concept is the possibility to fit frequency isosurfaces in the k-space of photonic crystals with elliptic surfaces, allowing them to mimic the dispersion relation of light in anisotropic effective media. Photonic crystal cloaks and other TO devices operating at visible wavelengths can be constructed from optically transparent substances like glasses, whose attenuation coefficient can be as small as 10 dB/km, suggesting the TO design methodology can be applied to the development of optical devices not limited by the losses inherent to metal-based, passive metamaterials.

Urzhumov, Yaroslav A

2010-01-01T23:59:59.000Z

193

MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP  

E-Print Network [OSTI]

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

194

Journal of Educational Psychology Applying Grounded Coordination Challenges to Concrete  

E-Print Network [OSTI]

Journal of Educational Psychology Applying Grounded Coordination Challenges to Concrete Learning, M. I. (2013, August 19). Applying Grounded Coordination Challenges to Concrete Learning Materials.1037/a0034098 #12;Applying Grounded Coordination Challenges to Concrete Learning Materials: A Study

195

Exciton Bose condensation : the ground state of an electron-hole gas I. Mean field description of a simplified model  

E-Print Network [OSTI]

1069 Exciton Bose condensation : the ground state of an electron-hole gas I. Mean field description dégénérées. Nous étudions la condensation de Bose de ce système en fonction de la densité, négligeant dans-hole gas in a simple model semiconductor, with direct gap and isotropic, non degenerate bands. We study

Boyer, Edmond

196

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Wednesday, 26 March 2008 00:00 Prospective challengers to...

197

Potential “ways of thinking” about the shear-banding phenomenon  

E-Print Network [OSTI]

Shear-banding is a curious but ubiquitous phenomenon occurring in soft matter. The phenomenological similarities between the shear-banding transition and phase transitions has pushed some researchers to adopt a ‘thermodynamical’ ...

Fardin, M. A.

198

Quebec Recovery of White-Fronted Goose Banded in Greenland  

E-Print Network [OSTI]

O. H. Hewitt Journal:  Bird Banding Volume:  19 Issue:  3 (July) Section:  General Notes Year:  1948 Pages:  124

199

Arctic Tern Banded in Greenland, Recovered in Ontario  

E-Print Network [OSTI]

T. M. Shortt Journal:  Bird Banding Volume:  20 Issue:  1 (January) Section:  General Notes Year:  1949 Pages:  50

200

Ground heat exchanger design for direct geothermal energy systems .  

E-Print Network [OSTI]

??Direct geothermal energy systems use the ground to heat and cool buildings. Ground-source heat pump (GSHP) systems are the most widespread form of direct geothermal… (more)

COLLS, STUART

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

Recovery Act - Geothermal Technologies Program:Ground Source...  

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

Recovery Act - Geothermal Technologies Program:Ground Source Heat Pumps Recovery Act - Geothermal Technologies Program:Ground Source Heat Pumps A detailled description of the...

202

GROUND PLANE INSULATION FAILURE IN THE FIRST TPC SUPERCONDUCTING COIL  

E-Print Network [OSTI]

is WIUUTEO GROUND PLANE INSULATION FAILURE IN THE FIRST TPCOn August 27, 1980, an insulation failure occurred dt-ringby a failure uf ground plane insulation. ACKNOWLEDGMENTS The

Green, M.A.

2010-01-01T23:59:59.000Z

203

Department of Veterans Affairs, FONSI - Ground mounted solar...  

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

Ground mounted solar photovoltaic power at San Joaquin National Cemetery Department of Veterans Affairs, FONSI - Ground mounted solar photovoltaic power at San Joaquin National...

204

Data Analysis from Ground Source Heat Pump Demonstration Projects...  

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

Analysis from Ground Source Heat Pump Demonstration Projects Data Analysis from Ground Source Heat Pump Demonstration Projects Comparison of building energy use before and after...

205

China's Evolving Defense Economy: A PLA Ground Force Perspective  

E-Print Network [OSTI]

s Evolving Defense Economy: A PLA Ground Force PerspectivePeople’s Liberation Army (PLA) doctrinal developments,modernization of the PLA ground forces have incrementally

COOPER, Cortez A.

2013-01-01T23:59:59.000Z

206

A model of ATL ground motion for storage rings  

E-Print Network [OSTI]

A MODEL OF ATL GROUND MOTION FOR STORAGE RINGS A. WolskiMODEL OF ATL GROUND MOTION FOR STORAGE RINGS* A. Wolski # ,

Wolski, Andrzej; Walker, Nicholas J.

2003-01-01T23:59:59.000Z

207

Hybrid Ground Source System Analysis and Tool Development | Department...  

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

Hybrid Ground Source System Analysis and Tool Development Hybrid Ground Source System Analysis and Tool Development Project objectives: 1. Compile filtered hourly data for three...

208

Excitation of Banded Whistler Waves in the Magnetosphere  

SciTech Connect (OSTI)

Banded whistler waves can be generated by the whistler anisotropy instability driven by two bi-Maxwellian electron components with T{sub {perpendicular}}/T{sub {parallel}} > 1 at different T{sub {parallel}} For typical magnetospheric condition of 1 < {omega}{sub e}/{Omega}{sub e} < 5 in regions associated with strong chorus, upper-band waves can be excited by anisotropic electrons below {approx} 1 keV, while lower-band waves are excited by anisotropic electrons above {approx} 10 keV. Lower-band waves are generally field-aligned and substantially electromagnetic, while upper-band waves propagate obliquely and have quasi-electrostatic fluctuating electric fields. The quasi-electrostatic feature of upper-band waves suggests that they may be more easily identified in electric field observations than in magnetic field observations. Upper-band waves are liable to Landau damping and the saturation level of upperband waves is lower than lower-band waves, consistent with observations that lower-band waves are stronger than upper-band waves on average. The oblique propagation, the lower saturation level, and the more severe Landau damping together would make upper-band waves more tightly confined to the geomagnetic equator (|{lambda}{sub m}| < {approx}10{sup o}) than lower-band waves.

Gary, S. Peter [Los Alamos National Laboratory; Liu, Kaijun [Los Alamos National Laboratory; Winske, Dan [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

209

Anisotropy of strong pinning in multi-band superconductors  

E-Print Network [OSTI]

pinning in multi-band superconductors 2 1. Introduction The multi-band nature of superconductivity in iron the anisotropy of superconducting parameters in the iron-based superconductors. In particular, Kidzun et al. [23Anisotropy of strong pinning in multi-band superconductors C.J. van der Beek, M. Konczykowski

Boyer, Edmond

210

614 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 47, NO. 5, MAY 1999 -Band Finite Ground Coplanar  

E-Print Network [OSTI]

-contacted diodes have very low parasitics, but they are difficult to handle, can have problems with thermal cycling. Katehi are with the Department of Electrical Engineering and Computer Science, The University of Michigan at Ann Arbor, Ann Arbor, MI 48109-2122 USA. F. Brauchler was with the Department of Electrical

Papapolymerou, Ioannis "John"

211

W-Band Sheet Beam Klystron Design  

SciTech Connect (OSTI)

Sheet beam devices provide important advantages for very high power, narrow bandwidth RF sources like accelerator klystrons [1]. Reduced current density and increased surface area result in increased power capabi1ity, reduced magnetic fields for focusing and reduced cathode loading. These advantages are offset by increased complexity, beam formation and transport issues and potential for mode competition in the ovennoded cavities and drift tube. This paper will describe the design issues encountered in developing a 100 kW peak and 2 kW average power sheet beam k1ystron at W-band including beam formation, beam transport, circuit design, circuit fabrication and mode competition.

Scheitrum, G.; Caryotakis, G.; Burke, A.; Jensen, A.; Jongewaard, E.a Krasnykh, A.; Neubauer, M.; Phillips, R.; Rauenbuehler, K.; /SLAC

2011-11-11T23:59:59.000Z

212

An X-band overmoded relativistic klystron  

SciTech Connect (OSTI)

An X-band overmoded relativistic klystron is proposed, the operation mode of which is the TM{sub 02} mode. The drift tube could not cut off the TM{sub 01} mode; isolating the buncher cavity from the input cavity is achieved by introducing a sectional RF lossy material. Microwaves are extracted from the modulated electron beam using a cylindrical waveguide, rather than a coaxial waveguide; thereby, the output structure is significantly simplified. Particle-in-cell simulations show that microwaves with power of 1.28?GW and frequency of 9.30?GHz can be obtained, corresponding to an efficiency of 32% and relative bandwidth of about 8%.

Xiao, Renzhen; Chen, Changhua; Li, Jiawei; Bai, Xianchen [Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Deng, Yuqun [Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

2014-11-15T23:59:59.000Z

213

Longevity of Emplacement Drift Ground Support Materials  

SciTech Connect (OSTI)

The purpose of this analysis is to evaluate the factors affecting the longevity of emplacement drift ground support materials and to develop a basis for selection of materials for ground support that will function throughout the preclosure period. The Development Plan (DP) for this analysis is given in CRWMS M&O (Civilian Radioactive Waste Management System Management and Operating Contractor) (1999a). The candidate materials for ground support are steel (carbon steel, ductile cast iron, galvanized steel, and stainless steel, etc.) and cement. Steel will mainly be used for steel sets, lagging, channels, rock bolts, and wire mesh. Cement usage is only considered in the case of grouted rock bolts. The candidate materials for the invert structure are steel and crushed rock ballast. The materials shall be evaluated for the repository emplacement drift environment under a specific thermal loading condition based on the proposed License Application Design Selection (LADS) design. The analysis consists of the following tasks: (1) Identify factors affecting the longevity of ground control materials for use in emplacement drifts. (2) Review existing documents concerning behavior of candidate ground control materials during the preclosure period. The major criteria to be considered for steel are mechanical and thermal properties, and durability, of which corrosion is the most important concern. (3) Evaluate the available results and develop recommendations for material(s) to be used.

D. Tang

2000-01-07T23:59:59.000Z

214

Hybrid Band effects program (Lockheed Martin shared vision CRADA)  

SciTech Connect (OSTI)

Hybrid Band{trademark} (H-band) is a Lockheed Martin Missiles and Fire Control (LMMFC) designation for a specific RF modulation that causes disruption of select electronic components and circuits. H-Band enables conventional high-power microwave (HPM) effects (with a center frequency of 1 to 2 GHz, for example) using a higher frequency carrier signal. The primary technical objective of this project was to understand the fundamental physics of Hybrid Band{trademark} Radio Frequency effects on electronic systems. The follow-on objective was to develop and validate a Hybrid Band{trademark} effects analysis process.

Bacon, L. D.

2012-03-01T23:59:59.000Z

215

Puzzling Phenomenon of Diffuse Interstellar Bands  

E-Print Network [OSTI]

The discovery of the first diffuse interstellar bands (DIBs) dates back to the pioneering years of stellar spectroscopy. Today, we know about 300 absorption structures of this kind. There exists a great variety of the profiles and intensities of DIBs, so they can not be readily described, classified or characterized. To the present day no reliable identification of the DIBs' carriers has been found. Many carriers of DIBs have been proposed over the years. They ranged from dust grains to free molecules of different kinds, and to more exotic specimens, like hydrogen negative ion. Unfortunately, none of them is responsible for observed DIBs. Furthermore, it was shown that a single carrier cannot be responsible for all known DIBs. It is hard to estimate how many carriers can participate in producing these bands. The problem is further complicated by the fact that to this day it is still impossible to find any laboratory spectrum of any substance which would match the astrophysical spectra. Here, a historical outline concerning DIBs is followed by a brief description of their whole population. Then, a special attention is focused on the procedures trying to extract spectroscopic families within the set of all known DIBs.

B. Wszolek

2007-12-10T23:59:59.000Z

216

Mimicking Time Evolution within a Quantum Ground State: Ground-State Quantum Computation, Cloning, and Teleportation  

E-Print Network [OSTI]

Ground-state quantum computers mimic quantum mechanical time evolution within the amplitudes of a time-independent quantum state. We explore the principles that constrain this mimicking. A no-cloning argument is found to impose strong restrictions. It is shown, however, that there is flexibility that can be exploited using quantum teleportation methods to improve ground-state quantum computer design.

Ari Mizel

2003-12-09T23:59:59.000Z

217

The ground state energy at unitarity  

E-Print Network [OSTI]

We consider two-component fermions on the lattice in the unitarity limit. This is an idealized limit of attractive fermions where the range of the interaction is zero and the scattering length is infinite. Using Euclidean time projection, we compute the ground state energy using four computationally different but physically identical auxiliary-field methods. The best performance is obtained using a bounded continuous auxiliary field and a non-local updating algorithm called hybrid Monte Carlo. With this method we calculate results for 10 and 14 fermions at lattice volumes 4^3, 5^3, 6^3, 7^3, 8^3 and extrapolate to the continuum limit. For 10 fermions in a periodic cube, the ground state energy is 0.292(12) times the ground state energy for non-interacting fermions. For 14 fermions the ratio is 0.329(5).

Dean Lee

2008-07-28T23:59:59.000Z

218

Ground Control for Emplacement Drifts for SR  

SciTech Connect (OSTI)

This analysis demonstrates that a satisfactory ground control system can be designed for the Yucca Mountain site, and provides the technical basis for the design of ground support systems to be used in repository emplacement and non-emplacement drifts. The repository ground support design was based on analytical methods using acquired computer codes, and focused on the final support systems. A literature review of case histories, including the lessons learned from the design and construction of the ESF, the studies on the seismic damages of underground openings, and the use of rock mass classification systems in the ground support design, was conducted (Sections 6.3.4 and 6.4). This review provided some basis for determining the inputs and methodologies used in this analysis. Stability of the supported and unsupported emplacement and non-emplacement drifts was evaluated in this analysis. The excavation effects (i.e., state of the stress change due to excavation), thermal effects (i.e., due to heat output from waste packages), and seismic effects (i.e., from potential earthquake events) were evaluated, and stress controlled modes of failure were examined for two in situ stress conditions (k_0=0.3 and 1.0) using rock properties representing rock mass categories of 1 and 5. Variation of rock mass units such as the non-lithophysal (Tptpmn) and lithophysal (Tptpll) was considered in the analysis. The focus was on the non-lithophysal unit because this unit appears to be relatively weaker and has much smaller joint spacing. Therefore, the drift stability and ground support needs were considered to be controlled by the design for this rock unit. The ground support systems for both emplacement and non-emplacement drifts were incorporated into the models to assess their performance under in situ, thermal, and seismic loading conditions. Both continuum and discontinuum modeling approaches were employed in the analyses of the rock mass behavior and in the evaluation of the stability of the openings. No credit or account was given for the initial ground support in modeling the final ground support systems for both emplacement and non-emplacement drifts in this analysis.

Y. Sun

2000-04-07T23:59:59.000Z

219

THE MULTIWAVELENGTH SURVEY BY YALE-CHILE (MUSYC): DEEP MEDIUM-BAND OPTICAL IMAGING AND HIGH-QUALITY 32-BAND PHOTOMETRIC REDSHIFTS IN THE ECDF-S  

SciTech Connect (OSTI)

We present deep optical 18-medium-band photometry from the Subaru telescope over the {approx}30' x 30' Extended Chandra Deep Field-South, as part of the Multiwavelength Survey by Yale-Chile (MUSYC). This field has a wealth of ground- and space-based ancillary data, and contains the GOODS-South field and the Hubble Ultra Deep Field. We combine the Subaru imaging with existing UBVRIzJHK and Spitzer IRAC images to create a uniform catalog. Detecting sources in the MUSYC 'BVR' image we find {approx}40,000 galaxies with R {sub AB} < 25.3, the median 5{sigma} limit of the 18 medium bands. Photometric redshifts are determined using the EAzY code and compared to {approx}2000 spectroscopic redshifts in this field. The medium-band filters provide very accurate redshifts for the (bright) subset of galaxies with spectroscopic redshifts, particularly at 0.1 < z < 1.2 and at z {approx}> 3.5. For 0.1 < z < 1.2, we find a 1{sigma} scatter in {Delta}z/(1 + z) of 0.007, similar to results obtained with a similar filter set in the COSMOS field. As a demonstration of the data quality, we show that the red sequence and blue cloud can be cleanly identified in rest-frame color-magnitude diagrams at 0.1 < z < 1.2. We find that {approx}20% of the red sequence galaxies show evidence of dust emission at longer rest-frame wavelengths. The reduced images, photometric catalog, and photometric redshifts are provided through the public MUSYC Web site.

Cardamone, Carolin N.; Van Dokkum, Pieter G.; Urry, C. Megan; Brammer, Gabriel [Department of Astronomy, Yale University, New Haven, CT 06511 (United States); Taniguchi, Yoshi [Research Center for Space and Cosmic Evolution, Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577 (Japan); Gawiser, Eric; Bond, Nicholas [Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854-8019 (United States); Taylor, Edward; Damen, Maaike [Sterrewacht Leiden, Leiden University, NL-2300 RA Leiden (Netherlands); Treister, Ezequiel [Institute for Astronomy, 2680 Woodlawn Drive, University of Hawaii, Honolulu, HI 96822 (United States); Cobb, Bethany E. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Schawinski, Kevin [Yale Center for Astronomy and Astrophysics, Yale University, P.O. Box 208121, New Haven, CT 06520 (United States); Lira, Paulina [Departamento de Astronoma, Universidad de Chile, Casilla 36-D, Santiago (Chile); Murayama, Takashi [Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578 (Japan); Saito, Tomoki [Institute for Physics and Mathematics of the Universe, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Sumikawa, Kentaro, E-mail: carolin.cardamone@astro.yale.ed [Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577 (Japan)

2010-08-15T23:59:59.000Z

220

Eastern Band of Cherokee Strategic Energy Plan  

SciTech Connect (OSTI)

The Eastern Band of Cherokee Indians was awarded a grant under the U.S. Department of Energy Tribal Energy Program (TEP) to develop a Tribal Strategic Energy Plan (SEP). The grant, awarded under the “First Steps” phase of the TEP, supported the development of a SEP that integrates with the Tribe’s plans for economic development, preservation of natural resources and the environment, and perpetuation of Tribal heritage and culture. The Tribe formed an Energy Committee consisting of members from various departments within the Tribal government. This committee, together with its consultant, the South Carolina Institute for Energy Studies, performed the following activities: • Develop the Tribe’s energy goals and objectives • Establish the Tribe’s current energy usage • Identify available renewable energy and energy efficiency options • Assess the available options versus the goals and objectives • Create an action plan for the selected options

Souther Carolina Institute of energy Studies-Robert Leitner

2009-01-30T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

High angular resolution N-band observation of the silicate carbon star IRAS08002-3803 with the VLTI/MIDI instrument  

E-Print Network [OSTI]

We present the results of N-band spectro-interferometric observations of the silicate carbon star IRAS08002-3803 with the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Interferometer (VLTI) of the European Southern Observatory (ESO). The observations were carried out using two unit telescopes (UT2 and UT3) with projected baseline lengths ranging from 39 to 47 m. Our observations of IRAS08002-3803 have spatially resolved the dusty environment of a silicate carbon star for the first time and revealed an unexpected wavelength dependence of the angular size in the N band: the uniform-disk diameter is found to be constant and ~36 mas (72 Rstar) between 8 and 10 micron, while it steeply increases longward of 10 micron to reach ~53 mas (106 Rstar) at 13 micron. Model calculations with our Monte Carlo radiative transfer code show that neither spherical shell models nor axisymmetric disk models consisting of silicate grains alone can simultaneously explain the observed wavelength dependence of the visibility and the spectral energy distribution (SED). We propose that the circumstellar environment of IRAS08002-3803 may consist of two grain species coexisting in the disk: silicate and a second grain species, for which we consider amorphous carbon, large silicate grains, and metallic iron grains. Comparison of the observed visibilities and SED with our models shows that such disk models can fairly -- though not entirely satisfactorily -- reproduce the observed SED and N-band visibilities. Our MIDI observations and the radiative transfer calculations lend support to the picture where oxygen-rich material around IRAS08002-3803 is stored in a circumbinary disk surrounding the carbon-rich primary star and its putative low-luminosity companion.

Keiichi Ohnaka; T. Driebe; K. -H. Hofmann; Ch. Leinert; S. Morel; F. Paresce; Th. Preibisch; A. Richichi; D. Schertl; M. Schoeller; L. B. F. M. Waters; G. Weigelt; M. Wittkowski

2005-09-26T23:59:59.000Z

222

Selenium in Oklahoma ground water and soil  

SciTech Connect (OSTI)

Selenium with a consumption of 2 liters per day (5). The objectives of this study are: (1) to determine the concentrations of Se in Oklahoma ground water and soil samples. (2) to map the geographical distribution of Se species in Oklahoma. (3) to relate groundwater depth, pH and geology with concentration of Se.

Atalay, A.; Vir Maggon, D.

1991-03-30T23:59:59.000Z

223

Photovoltaic module mounting clip with integral grounding  

DOE Patents [OSTI]

An electrically conductive mounting/grounding clip, usable with a photovoltaic (PV) assembly of the type having an electrically conductive frame, comprises an electrically conductive body. The body has a central portion and first and second spaced-apart arms extending from the central portion. Each arm has first and second outer portions with frame surface-disrupting element at the outer portions.

Lenox, Carl J.

2010-08-24T23:59:59.000Z

224

Unattended ground sensor situation assessment workstation  

SciTech Connect (OSTI)

Effective utilization of unattended ground sensors (UGSs) in a theater reconnaissance, surveillance, target acquisition, and kill assessment environment requires that a human operator be able to interpret, and collectively assess, the significance of real time data obtained from UGS emplacements over large geographical regions of interest. The products of this UGS data interpretation and assessment activity can then be used in the decision support process for command level evaluation of appropriate courses of action. Advancements in both sensor hardware technology and in software systems and processing technology have enabled the development of practical real time situation assessment capabilities based upon information from unattended ground sensors. A decision support workstation that employs rule-based expert system processing of reports from unattended ground sensors is described. The primary goal of this development activity is to produce a suite of software to track vehicles using data from unattended ground sensors. The situational assessment products from this system have stand-alone utility, but are also intended to provide cueing support for overhead sensors and supplementary feeds to all-source fusion centers. The conceptual framework, developmental architecture, and demonstration field tests of the system are described.

Jeppesen, D.; Trellue, R.

1997-04-01T23:59:59.000Z

225

Above Ground Storage Tank (AST) Inspection Form  

E-Print Network [OSTI]

Above Ground Storage Tank (AST) Inspection Form Petroleum Bulk Storage Form Facility Name: ______________________ Tank No:_______________ Date:_____________ Inspection Parameter Result Comments/Corrective Actions 1. Is there leaking in the interstitial space (not DRY)? YES/NO/NA 2. Tank surface shows signs of leakage? YES/NO/NA 3

Pawlowski, Wojtek

226

Longevity of Emplacement Drift Ground Support Materials  

SciTech Connect (OSTI)

The purpose of this analysis is to evaluate the factors affecting the longevity of emplacement drift ground support materials and to develop a basis for the selection of materials for ground support that will function throughout the preclosure period of a potential repository at Yucca Mountain. REV 01 ICN 01 of this analysis is developed in accordance with AP-3.10Q, Analyses and Models, Revision 2, ICN 4, and prepared in accordance with the Technical Work Plan for Subsurface Design Section FY 01 Work Activities (CRWMS M&O 2001a). The objective of this analysis is to update the previous analysis (CRWMS M&O 2000a) to account for related changes in the Ground Control System Description Document (CRWMS M&O 2000b), the Monitored Geologic Repository Project Description Document, which is included in the Requirements and Criteria for Implementing a Repository Design that can be Operated Over a Range of Thermal Modes (BSC 2001), input information, and in environmental conditions, and to provide updated information on candidate ground support materials. Candidate materials for ground support are carbon steel and cement grout. Steel is mainly used for steel sets, lagging, channel, rock bolts, and wire mesh. Cement grout is only considered in the case of grouted rock bolts. Candidate materials for the emplacement drift invert are carbon steel and granular natural material. Materials are evaluated for the repository emplacement drift environment based on the updated thermal loading condition and waste package design. The analysis consists of the following tasks: (1) Identify factors affecting the longevity of ground support materials for use in emplacement drifts. (2) Review existing documents concerning the behavior of candidate ground support materials during the preclosure period. (3) Evaluate impacts of temperature and radiation effects on mechanical and thermal properties of steel. Assess corrosion potential of steel at emplacement drift environment. (4) Evaluate factors affecting longevity of cement grouts for fully grouted rock bolt system. Provide updated information on cement grout mix design for fully grouted rock bolt system. (5) Evaluate longevity of materials for the emplacement drift invert.

D.H.Tang

2001-05-30T23:59:59.000Z

227

INTERFEROMETRIC VISIBILITY OF A SCINTILLATING SOURCE: STATISTICS AT THE NYQUIST LIMIT  

SciTech Connect (OSTI)

We derive the distribution of interferometric visibility for a source exhibiting strong diffractive scintillation, with particular attention to spectral resolution at or near the Nyquist limit. We also account for arbitrary temporal averaging, intrinsic variability within the averaging time, and the possibility of spatially extended source emission. We demonstrate that the interplay between scintillation and self-noise induces several remarkable features, such as a broad ''skirt'' in the visibility distribution. Our results facilitate the interpretation of interferometric observations of pulsars at meter and decimeter wavelengths.

Johnson, M. D.; Gwinn, C. R., E-mail: michaeltdh@physics.ucsb.edu, E-mail: cgwinn@physics.ucsb.edu [Department of Physics, University of California, Santa Barbara, CA 93106 (United States)

2013-05-10T23:59:59.000Z

228

The Intersection of Gay Street and Straight Street: Shopping, Social Class, and the New Gay Visibility  

E-Print Network [OSTI]

, some of whom turned out to be—gasp!— straight. They went on little, romantic dates, and told each other how nice and attractive they were; they frolicked in the pool in their ranch-style house in Palm Springs; James’ best girlfriend Andra grilled.... Making Sense of the New Gay Tele-Visibility Something important and strange is going on when people who just a few years ago reviled you decide instead they want to be you, or at least dress like you. What is going on here? What kind of visibility...

Gamson, Joshua

2005-04-01T23:59:59.000Z

229

Visible line intensities of the triatomic hydrogen ion from experiment and theory  

E-Print Network [OSTI]

The visible spectrum of H3+ is studied using high-sensitivity action spectroscopy in a cryogenic radiofrequency multipole trap. Advances are made to measure the weak ro-vibrational transitions from the lowest rotational states of H3+ up to high excitation energies providing visible line intensities and, after normalisation to an infrared calibration line, the corresponding Einstein $B$ coefficients. {\\it Ab initio} predictions for the Einstein $B$ coefficients are obtained from a highly precise dipole moment surface of H3+ and found to be in excellent agreement, even in the region where states have been classified as chaotic.

Petrignani, Annemieke; Grussie, Florian; Wolf, Andreas; Mizus, Irina I; Polyansky, Oleg L; Tennyson, Jonathan; Zobov, Nikolai F; Pavanello, Michele; Adamowicz, Ludwik

2015-01-01T23:59:59.000Z

230

Atomic Entanglement vs Photonic Visibility for Quantum Criticality of Hybrid System  

E-Print Network [OSTI]

To characterize the novel quantum phase transition for a hybrid system consisting of an array of coupled cavities and two-level atoms doped in each cavity, we study the atomic entanglement and photonic visibility in comparison with the quantum fluctuation of total excitations. Analytical and numerical simulation results show the happen of quantum critical phenomenon similar to the Mott insulator to superfluid transition. Here, the contour lines respectively representing the atomic entanglement, photonic visibility and excitation variance in the phase diagram are consistent in the vicinity of the non-analytic locus of atomic concurrences.

M. X. Huo; Ying Li; Z. Song; C. P. Sun

2007-02-12T23:59:59.000Z

231

Ground-water sample collection and analysis plan for the ground-water surveillance project  

SciTech Connect (OSTI)

The Pacific Northwest Laboratory performs ground-water sampling activities at the US Department of Energy`s (DOE`s) Hanford Site in support of DOE`s environmental surveillance responsibilities. The purpose of this document is to translate DOE`s General Environmental Protection Program (DOE Order 5400.1) into a comprehensive ground-water sample collection and analysis plan for the Hanford Site. This sample collection and analysis plan sets forth the environmental surveillance objectives applicable to ground water, identifies the strategy for selecting sample collection locations, and lists the analyses to be performed to meet those objectives.

Bryce, R.W.; Evans, J.C.; Olsen, K.B.

1991-12-01T23:59:59.000Z

232

Ground-water sample collection and analysis plan for the ground-water surveillance project  

SciTech Connect (OSTI)

The Pacific Northwest Laboratory performs ground-water sampling activities at the US Department of Energy's (DOE's) Hanford Site in support of DOE's environmental surveillance responsibilities. The purpose of this document is to translate DOE's General Environmental Protection Program (DOE Order 5400.1) into a comprehensive ground-water sample collection and analysis plan for the Hanford Site. This sample collection and analysis plan sets forth the environmental surveillance objectives applicable to ground water, identifies the strategy for selecting sample collection locations, and lists the analyses to be performed to meet those objectives.

Bryce, R.W.; Evans, J.C.; Olsen, K.B.

1991-12-01T23:59:59.000Z

233

ETA CARINAE ACROSS THE 2003.5 MINIMUM: ANALYSIS IN THE VISIBLE AND NEAR-INFRARED SPECTRAL REGION  

SciTech Connect (OSTI)

We present an analysis of the visible through near-infrared spectrum of Eta Carinae ({eta} Car) and its ejecta obtained during the '{eta} Car Campaign with the Ultraviolet and Visual Echelle Spectrograph (UVES) at the ESO Very Large Telescope (VLT)'. This is a part of larger effort to present a complete {eta} Car spectrum, and extends the previously presented analyses with the Hubble Space Telescope/Space Telescope Imaging Spectrograph (HST/STIS) in the UV (1240-3159 A) to 10,430 A. The spectrum in the mid- and near-UV is characterized by the ejecta absorption. At longer wavelengths, stellar wind features from the central source and narrow-emission lines from the Weigelt condensations dominate the spectrum. However, narrow absorption lines from the circumstellar shells are present. This paper provides a description of the spectrum between 3060 and 10,430 A, including line identifications of the ejecta absorption spectrum, the emission spectrum from the Weigelt condensations and the P Cygni stellar wind features. The high spectral resolving power of VLT/UVES enables equivalent width measurements of atomic and molecular absorption lines for elements with no transitions at the shorter wavelengths. However, the ground-based seeing and contributions of nebular-scattered radiation prevent direct comparison of measured equivalent widths in the VLT/UVES and HST/STIS spectra. Fortunately, HST/STIS and VLT/UVES have a small overlap in wavelength coverage which allows us to compare and adjust for the difference in scattered radiation entering the instruments' apertures. This paper provides a complete online VLT/UVES spectrum with line identifications and a spectral comparison between HST/STIS and VLT/UVES between 3060 and 3160 A.

Nielsen, K. E.; Kober, G. Vieira [Catholic University of America, Washington, DC 20064 (United States); Weis, K.; Bomans, D. J. [Astronomisches Institut, Ruhr-Universitaet Bochum, Universitaetsstrasse 150, D-44780 Bochum (Germany); Gull, T. R. [Astrophysics Science Division, Code 667, Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Stahl, O. [ZAH, Landessternwarte Heidelberg-Koenigstuhl, D-69117 Heidelberg (Germany)], E-mail: krister.nielsen@nasa.gov

2009-04-15T23:59:59.000Z

234

Simultaneous description of low-lying positive and negative parity bands in heavy even-even nuclei  

E-Print Network [OSTI]

The low-lying spectra including the first few excited positive and negative parity bands of some heavy even-even nuclei from the rare earth and actinide mass regions are investigated within the framework of the symplectic Interacting Vector Boson Model with Sp(12,$R$) dynamical symmetry group. Symplectic dynamical symmetries allow the change of the number of excitation quanta or phonons building the collective states providing for larger representation spaces and richer subalgebraic structures to incorporate more complex nuclear spectra. The theoretical predictions for the energy levels and the electromagnetic transitions between the collective states of the ground state band and $K^{\\pi}=0^{-}$ band are compared with experiment and some other collective models incorporating octupole and/or dipole degrees of freedom. The energy staggering which is a sensitive indicator of the octupole correlations in the even-even nuclei is also calculated and compared with experiment. The results obtained for the energy levels, energy staggering and transition strengths reveal the relevance of the used dynamical symmetry of the model for the simultaneous description of both positive and negative parity low-lying collective bands.

H. G. Ganev

2014-09-05T23:59:59.000Z

235

Method for Creating Photonic Band Gap Materials - Energy Innovation...  

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

a photonic band gap. These microstructures have the potential to change the way optoelectronic devices, such as photodiodes, LEDs, and integrated optical circuit elements, are...

236

acoustic band gaps: Topics by E-print Network  

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

type of phononic crystals manufactured Institute of Physics. DOI: 10.10631.2167794 The propagation of acoustic waves in periodic composite Deymier, Pierre 2 Acoustic band gap...

237

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic...

238

Engineering the Electronic Band Structure for Multiband Solar Cells  

SciTech Connect (OSTI)

Using the unique features of the electronic band structure of GaNxAs1-x alloys, we have designed, fabricated and tested a multiband photovoltaic device. The device demonstrates an optical activity of three energy bands that absorb, and convert into electrical current, the crucial part of the solar spectrum. The performance of the device and measurements of electroluminescence, quantum efficiency and photomodulated reflectivity are analyzed in terms of the Band Anticrossing model of the electronic structure of highly mismatched alloys. The results demonstrate the feasibility of using highly mismatched alloys to engineer the semiconductor energy band structure for specific device applications.

Lopez, N.; Reichertz, L.A.; Yu, K.M.; Campman, K.; Walukiewicz, W.

2010-07-12T23:59:59.000Z

239

Electron spectroscopy study of single and double multiphoton ionization of strontium by visible picosecond laser light  

E-Print Network [OSTI]

795 Electron spectroscopy study of single and double multiphoton ionization of strontium by visible'ionisation multiphotonique simple et double du strontium par des impulsions picosecondes de 1011 à quelque 1012 W cm-2 initial un état excité de l'ion. Abstract. 2014 Multiphoton single and double ionization of strontium

Paris-Sud XI, Université de

240

Remote sensing of Greenland ice sheet using multispectral near-infrared and visible radiances  

E-Print Network [OSTI]

Remote sensing of Greenland ice sheet using multispectral near-infrared and visible radiances Petr microwave methods. The method should be useful for long-term monitoring of the melt area of the Greenland of MODIS retrievals of the western portion of the Greenland ice sheet over the period 2000 to 2006

Dozier, Jeff

Note: This page contains sample records for the topic "ground visible band" 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

Optical properties of metallic (III, Mn)V ferromagnetic semiconductors in the infrared to visible range  

E-Print Network [OSTI]

We report on a study of the ac conductivity and magneto-optical properties of metallic ferromagnetic (III, Mn)V semiconductors in the infrared to visible spectrum at zero temperature. Our analysis is based on the successful kinetic exchange model...

Hankiewicz, EM; Jungwirth, T.; Dietl, T.; Timm, C.; Sinova, Jairo.

2004-01-01T23:59:59.000Z

242

Mapping microphytobenthos biomass by non-linear inversion of visible-infrared hyperspectral images  

E-Print Network [OSTI]

- 1 - Mapping microphytobenthos biomass by non-linear inversion of visible-infrared hyperspectral-Philippe.Combe@chimie.univ-nantes.fr Abstract This study presents an innovative approach to map microphytobenthos biomass and fractional cover to microscale intimate mixtures. This prevents the use of classical linear unmixing models to retrieve biomass

Combe, Jean-Philippe

243

Engineering for Environmental Sustainability http://engineering.tufts.edu/ Energy-efficient Visible Light Communication  

E-Print Network [OSTI]

Engineering for Environmental Sustainability http://engineering.tufts.edu/ Energy-efficient Visible of a new era of energy-efficient lighting bringing revolutionary advances in the use of light technology is key to realizing energy-efficient "smart lighting systems". To extend the bandwidth

Tufts University

244

VISIBLE AND INFRARED RARE-EARTH ACTIVATED ELECTROLUMINESCENCE FROM ERBIUM DOPED GaN  

E-Print Network [OSTI]

. At the same time novel work is being conducted using rare earth elements as sources of light emission. Results. III-V semiconductors doped with rare-earth elements have also been used10VISIBLE AND INFRARED RARE-EARTH ACTIVATED ELECTROLUMINESCENCE FROM ERBIUM DOPED GaN M. Garter*, R

Steckl, Andrew J.

245

The Energy Dashboard: Improving the Visibility of Energy Consumption at a Campus-Wide Scale  

E-Print Network [OSTI]

of Energy (DOE) estimates that 73% of the electricity usage and 39% of the CO2 emissions in the US come from, Experimentation, Measurement, Human Factors Keywords Energy, Power, Buildings 1 Introduction The US DepartmentThe Energy Dashboard: Improving the Visibility of Energy Consumption at a Campus-Wide Scale Yuvraj

Gupta, Rajesh

246

Automatic Skin Enhancement with Visible and Near-Infrared Image Fusion  

E-Print Network [OSTI]

Automatic Skin Enhancement with Visible and Near-Infrared Image Fusion Sabine Süsstrunk School and hemo- globin, the key components of skin color, have little absorp- tion in the near-infrared (NIR to the incident light's wavelength, we show that near-infrared images provide information that can be used

Salvaggio, Carl

247

Distributed Pursuit-Evasion with Limited-Visibility Sensors Via Frontier-based Exploration  

E-Print Network [OSTI]

Distributed Pursuit-Evasion with Limited-Visibility Sensors Via Frontier-based Exploration Joseph W guaranteeing complete coverage of the frontier between cleared and contaminated areas while expanding the cleared area. Our frontier-based algorithm can guarantee detection of evaders in unknown, multiply

Bullo, Francesco

248

Thermal decomposition and flammability of fire-resistant, UV/visible-sensitive polyarylates, copolymers and blends  

E-Print Network [OSTI]

Thermal decomposition and flammability of fire-resistant, UV/visible- sensitive polyarylates temperature, low notch sensitivity, and good electrical properties. Most of all, these materials show a high resistance to ignition and flame spreading without additives [6]. A high-temperature wholly aromatic poly

249

A simplified physical model for assessing solar radiation over Brazil using GOES 8 visible imagery  

E-Print Network [OSTI]

A simplified physical model for assessing solar radiation over Brazil using GOES 8 visible imagery; published 30 January 2004. [1] Solar radiation assessment by satellite is constrained by physical Composition and Structure: Transmission and scattering of radiation; KEYWORDS: solar radiation, satellite

250

Diffuse interstellar bands in M33  

E-Print Network [OSTI]

We present the first sample of diffuse interstellar bands (DIBs) in the nearby galaxy M33. Studying DIBs in other galaxies allows the behaviour of the carriers to be examined under interstellar conditions which can be quite different from those of the Milky Way, and to determine which DIB properties can be used as reliable probes of extragalactic interstellar media. Multi-object spectroscopy of 43 stars in M33 has been performed using Keck/DEIMOS. The stellar spectral types were determined and combined with literature photometry to determine the M33 reddenings E(B-V)_M33. Equivalent widths or upper limits have been measured for the {\\lambda}5780 DIB towards each star. DIBs were detected towards 20 stars, demonstrating that their carriers are abundant in M33. The relationship with reddening is found to be at the upper end of the range observed in the Milky Way. The line of sight towards one star has an unusually strong ratio of DIB equivalent width to E(B-V)_M33, and a total of seven DIBs were detected towards...

Smith, Keith T; Evans, Christopher J; Cox, Nick L J; Sarre, Peter J

2013-01-01T23:59:59.000Z

251

Ground motion data for International Collider models  

SciTech Connect (OSTI)

The proposed location for the International Linear Collider (ILC) in the Americas region is Fermilab in Batavia Illinois. If built at this location the tunnels would be located in the Galena Platteville shale at a depth of 100 or more meters below the surface. Studies using hydro static water levels and seismometers have been conducted in the MINOS hall and the LaFrange Mine in North Aurora Illinois to determine the level of ground motion. Both these locations are in the Galena Platteville shale and indicate the typical ground motion to be expected for the ILC. The data contains both natural and cultural noise. Coefficients for the ALT law are determined. Seismic measurements at the surface and 100 meters below the surface are presented.

Volk, J.T.; LeBrun, P.; Shiltsev, V.; Singatulin, S.; /Fermilab

2007-11-01T23:59:59.000Z

252

SRS Burial Ground Complex: Remediation in Progress  

SciTech Connect (OSTI)

Closure of the various areas in the Burial Ground Complex (BGC) represents a major step in the reduction of risk at the Savannah River Site (SRS) and a significant investment of resources. The Burial Ground Complex occupies approximately 195 acres in the central section of the SRS. Approximately 160 acres of the BGC consists of hazardous and radioactive waste disposal sites that require remediation. Of these source acres, one-third have been remediated while two-thirds are undergoing interim or final action. These restoration activities have been carried out in a safe and cost effective manner while minimizing impact to operating facilities. Successful completion of these activities is in large part due to the teamwork demonstrated by the Department of Energy, contractor/subcontractor personnel, and the regulatory agencies. The experience and knowledge gained from the closure of these large disposal facilities can be used to expedite closure of similar facilities.

Griffin, M. [Westinghouse Savannah River Company, AIKEN, SC (United States); Crapse, B.; Cowan, S.

1998-01-21T23:59:59.000Z

253

Compression of ground-motion data  

SciTech Connect (OSTI)

Ground motion data has been recorded for many years at Nevada Test Site and is now stored on thousands of digital tapes. The recording format is very inefficient in terms of space on tape. This report outlines a method to compress the data onto a few hundred tapes while maintaining the accuracy of the recording and allowing restoration of any file to the original format for future use. For future digitizing a more efficient format is described and suggested.

Long, J.W.

1981-04-01T23:59:59.000Z

254

R/Blkstripe CTB Ground Strap  

E-Print Network [OSTI]

5 5 4 4 3 3 2 2 1 1 D D C C B B A A Orange Black Yellow Blue R/Blkstripe Tan Red CTB Ground Strap Title Size Document Number R ev Date: Sheet o f ? ToFr 2003_S Run 4 L.V Setup Rice. U. Bonner Lab B 1 1, Limited (picoFuse) @ 3.0 A 7x"VNTC"#14awgrated17A Actualoperating=7.7Amax. LOW VOLTAGE SUPPLY SETTINGS

Llope, William J.

255

Ground motion: An introduction for accelerator builders  

SciTech Connect (OSTI)

In this seminar we will review some of the characteristics of the major classes of ground motion in order to determine whether their effects must be considered or place fundamental limits on the sitting and/or design of modern storage rings and linear colliders. The classes discussed range in frequency content from tidal deformation and tectonic motions through earthquakes and microseisms. Countermeasures currently available are briefly discussed.

Fischer, G.E.

1992-02-01T23:59:59.000Z

256

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a county in Oklahoma.Groom Energy SolutionsGround

257

Sprites, elf transients, and positive ground strokes  

SciTech Connect (OSTI)

In two summertime mesoscale convective systems (MCSs), mesospheric optical sprite phenomena were often coincident with both large-amplitude positive cloud-to-ground lightning and transient Schumann resonance excitations of the entire Earth-ionosphere cavity. These observations, together with earlier studies of MCS electrification, suggest that sprites are triggered when the rapid removal of large quantities of positive charge from an areally extensive charge layer stresses the mesosphere to dielectric breakdown. 46 refs., 7 figs., 1 tab.

Boccippio, D.J.; Boldi, R.; Williams, E.R. [Massachusetts Inst. of Technology, Cambridge, MA (United States)] [and others

1995-08-25T23:59:59.000Z

258

Coherence and entanglement in the ground state of a bosonic Josephson junction: From macroscopic Schroedinger cat states to separable Fock states  

SciTech Connect (OSTI)

We consider a bosonic Josephson junction made of N ultracold and dilute atoms confined by a quasi-one-dimensional double-well potential within the two-site Bose-Hubbard model framework. The behavior of the system is investigated at zero temperature by varying the interatomic interaction from the strongly attractive regime to the repulsive one. We show that the ground state exhibits a crossover from a macroscopic Schroedinger-cat state to a separable Fock state through an atomic coherent regime. By diagonalizing the Bose-Hubbard Hamiltonian we characterize the emergence of the macroscopic cat states by calculating the Fisher information F, the coherence by means of the visibility {alpha} of the interference fringes in the momentum distribution, and the quantum correlations by using the entanglement entropy S. Both Fisher information and visibility are shown to be related to the ground-state energy by employing the Hellmann-Feynman theorem. This result, together with a perturbative calculation of the ground-state energy, allows simple analytical formulas for F and {alpha} to be obtained over a range of interactions, in excellent agreement with the exact diagonalization of the Bose-Hubbard Hamiltonian. In the attractive regime the entanglement entropy attains values very close to its upper limit for a specific interaction strength lying in the region where coherence is lost and self-trapping sets in.

Mazzarella, G.; Toigo, F. [Dipartimento di Fisica 'Galileo Galilei' and Consorzio Nazionale Interuniversitario per la Scienze Fisiche della Materia (CNISM), Universita di Padova, Via Marzolo 8, I-35122 Padova (Italy); Salasnich, L. [Dipartimento di Fisica 'Galileo Galilei' and Consorzio Nazionale Interuniversitario per la Scienze Fisiche della Materia (CNISM), Universita di Padova, Via Marzolo 8, I-35122 Padova (Italy); Istituto Nazionale di Ottica (INO) del Consiglio Nazionale delle Ricerche (CNR), via G. Sansone 1, I-50019 Sesto Fiorentino (Italy); Parola, A. [Dipartimento di Fisica e Matematica and CNISM, Universita dell'Insubria, Via Valleggio 11, I-22100 Como (Italy)

2011-05-15T23:59:59.000Z

259

A multi-band phase-locked loop frequency synthesizer  

E-Print Network [OSTI]

A phase-locked loop (PLL) frequency synthesizer suitable for multi-band transceivers is proposed. The multi-band PLL frequency synthesizer uses a switched tuning voltage- controlled oscillator (VCO) that covers a frequency range of 111 to 297MHz...

Palermo, Samuel Michael

1999-01-01T23:59:59.000Z

260

Intermediate Band Properties of Femtosecond-Laser Hyperdoped Silicon  

E-Print Network [OSTI]

. The high concentration of dopants forms an intermediate band (IB), instead of discrete energy levels exhibits broad-band light absorption to wavelengths deep below the corresponding bandgap energy of silicon) using secondary ion mass spectrometry. By varying the pressure of SF6, we find that the surface adsorbed

Mazur, Eric

Note: This page contains sample records for the topic "ground visible band" 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

BAND STRUCTURE AND OPTICAL PROPERTIES OF MAGNESIUM FLUORIDE  

E-Print Network [OSTI]

595 BAND STRUCTURE AND OPTICAL PROPERTIES OF MAGNESIUM FLUORIDE C. JOUANIN, J. P. ALBERT and C'autres transitions expéri- mentales. Abstract. 2014 The electronic band structure of magnesium fluoride is calculated, only some qualitative investigations exist for the calcium and magnesium fluorides [1, 2]. This lack

Paris-Sud XI, Université de

262

absorption band substructure: Topics by E-print Network  

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

absorption band substructure First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 THE ABSORPTION BAND EDGE...

263

THE INVERSE OF A SEMI-INFINITE SYMMETRIC BANDED MATRIX  

E-Print Network [OSTI]

algorithm 3]. The eigen- values and eigen-vectors for the nite symmetric tridiagonal case were obtainedTHE INVERSE OF A SEMI-INFINITE SYMMETRIC BANDED MATRIX D. A. LAVISy , B. W. SOUTHERNz and I. F a method for obtaining an analytic form for a class of sym- metric semi-in nite banded matrices, which are

Lavis, David

264

Visible and Infra-red Light Emission in Boron-Doped Wurtzite Silicon Nanowires  

E-Print Network [OSTI]

Silicon, the mainstay semiconductor in microelectronic circuitry, is considered unsuitable for optoelectronic applications owing to its indirect electronic band gap, which limits its efficiency as a light emitter. Here we ...

Fabbri, Filippo

265

Visible structures  

E-Print Network [OSTI]

All architecture is the interplay between structure, surface and ornament. Traditionally, ornament adorned structure thereby giving it its meaning. A society with its intellectual foundations resting in faith or the abstract ...

Conway, Helene Marie

1991-01-01T23:59:59.000Z

266

Ground-Coupled Heat Pump Applications and Case Studies  

E-Print Network [OSTI]

The paper presents an overview of ground loops for space-conditioning heat pumps, hot water, ice machines, and water-cooled refrigeration in residential and commercial applications. In Louisiana, a chain of hamburger drive-ins uses total ground...

Braud, H. J.

1989-01-01T23:59:59.000Z

267

Factors controlling tungsten concentrations in ground water, Carson Desert, Nevada  

E-Print Network [OSTI]

Factors controlling tungsten concentrations in ground water, Carson Desert, Nevada Ralph L. Seiler sources. Tungsten concentrations in 100 ground water samples from all aquifers used as drinking water indicates that W exhibits Tungsten con- centrations are strongly and positively correlated

268

Talking In Circles: Designing A Spatially-Grounded Audioconferencing Environment  

E-Print Network [OSTI]

to become a popular medium for social interaction. Traditional chat environments, however, are limitedTalking In Circles: Designing A Spatially-Grounded Audioconferencing Environment Roy Rodenstein, a multimodal audioconferencing environment whose novel design emphasizes spatial grounding with the aim

269

The Design of Ground-Coupled Heat Pump Systems  

E-Print Network [OSTI]

Ground-coupled heat pumps are being installed in increasing numbers due to proven performance and economy. The overall thermal resistance between the ground coupling fluid and a given type of surrounding soil is affected by pipe material, wall...

Parker, J. D.

1985-01-01T23:59:59.000Z

270

Highly deformed high-spin band in {sup 125}I  

SciTech Connect (OSTI)

High-spin states in {sup 125}I have been investigated using the reaction {sup 82}Se({sup 48}Ca, p4n) at a beam energy of 200 MeV and {gamma}-ray coincidence events were detected using the Gammasphere spectrometer. A deformed rotational band, extending up to I{sup {pi}=}95/2{sup -}, was observed for the first time in a heavier odd-A iodine nucleus. The characteristics of the band are very similar to those of the highly deformed bands observed recently in neighboring nuclei and it is essentially identical to one of the previously known bands in {sup 126}Xe. The experimental results are compared to cranked Nilsson-Strutinsky calculations and possible configurations for the band are discussed.

Singh, Purnima; Nag, Somnath; Singh, A. K.; Ragnarsson, I.; Huebel, H.; Al-Khatib, A.; Bringel, P.; Engelhardt, C.; Neusser-Neffgen, A.; Hagemann, G. B.; Hansen, C. R.; Herskind, B.; Sletten, G.; Bracco, A.; Benzoni, G.; Camera, F.; Fallon, P.; Clark, R. M.; Carpenter, M. P.; Janssens, R. V. F. [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur, IN-721302 (India); Department of Mathematical Physics, Lund Institute of Technology, Box 118, S-221 Lund (Sweden); Helmholtz-Institut fuer Strahlen- und Kernphysik, Universitaet Bonn, Nussallee 14-16, D-53115 Bonn (Germany); Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen O (Denmark); Dipartimento di Fisica, Universita di Milano and INFN, Sezione di Milano, I-20133 Milano (Italy); Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854 (United States); Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2011-08-15T23:59:59.000Z

271

Comparison and detection of total and available soil carbon fractions using visible/near infrared diffuse reflectance spectroscopy  

E-Print Network [OSTI]

. With the advent of visible/near-infrared-diffuse reflectance spectroscopy (VNIR-DRS) to infer on soil C fractionsComparison and detection of total and available soil carbon fractions using visible/near infrared diffuse reflectance spectroscopy D.V. Sarkhot a,1,2 , S. Grunwald a, , Y. Ge b,3 , C.L.S. Morgan c,4

Grunwald, Sabine

272

Dye Surface Coating Enables Visible Light Activation of TiO2 Nanoparticles Leading to Degradation of  

E-Print Network [OSTI]

Dye Surface Coating Enables Visible Light Activation of TiO2 Nanoparticles Leading to Degradation that an alizarin red S ~ARS! dye coating on TiO2 nanoparticles enables visible light activation of reactive oxygen species. Successful coating of nanoparti- cles with dye is demonstrated through

Brown, Eric

273

Penetration of UV-visible solar radiation in the global oceans: Insights from ocean color remote sensing  

E-Print Network [OSTI]

Penetration of UV-visible solar radiation in the global oceans: Insights from ocean color remote 2013. [1] Penetration of solar radiation in the ocean is determined by the attenuation coefficient (Kd. Lewis, R. Arnone, and R. Brewin (2013), Penetration of UV-visible solar radiation in the global oceans

274

A DUAL-BAND MILLIMETER-WAVE KINETIC INDUCTANCE CAMERA FOR THE IRAM 30 m TELESCOPE  

SciTech Connect (OSTI)

The Neel IRAM KIDs Array (NIKA) is a fully integrated measurement system based on kinetic inductance detectors (KIDs) currently being developed for millimeter wave astronomy. The instrument includes dual-band optics allowing simultaneous imaging at 150 GHz and 220 GHz. The imaging sensors consist of two spatially separated arrays of KIDs. The first array, mounted on the 150 GHz branch, is composed of 144 lumped-element KIDs. The second array (220 GHz) consists of 256 antenna-coupled KIDs. Each of the arrays is sensitive to a single polarization; the band splitting is achieved by using a grid polarizer. The optics and sensors are mounted in a custom dilution cryostat, with an operating temperature of {approx}70 mK. Electronic readout is realized using frequency multiplexing and a transmission line geometry consisting of a coaxial cable connected in series with the sensor array and a low-noise 4 K amplifier. The dual-band NIKA was successfully tested in 2010 October at the Institute for Millimetric Radio Astronomy (IRAM) 30 m telescope at Pico Veleta, Spain, performing in-line with laboratory predictions. An optical NEP was then calculated to be around 2 x 10{sup -16} W Hz{sup -1/2} (at 1 Hz) while under a background loading of approximately 4 pW pixel{sup -1}. This improvement in comparison with a preliminary run (2009) verifies that NIKA is approaching the target sensitivity for photon-noise limited ground-based detectors. Taking advantage of the larger arrays and increased sensitivity, a number of scientifically relevant faint and extended objects were then imaged including the Galactic Center SgrB2 (FIR1), the radio galaxy Cygnus A, and the NGC1068 Seyfert galaxy. These targets were all observed simultaneously in the 150 GHz and 220 GHz atmospheric windows.

Monfardini, A.; Benoit, A.; Bideaud, A.; Swenson, L.; Cruciani, A.; Camus, P.; Hoffmann, C. [Institut Neel, CNRS and Universite Joseph Fourier (UJF), Grenoble F-38042 (France); Desert, F. X. [Institut de Planetologie et d'Astrophysique, UJF and CNRS-INSU, Grenoble F-38041 (France); Doyle, S.; Ade, P.; Mauskopf, P.; Tucker, C. [Cardiff School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA (United Kingdom); Roesch, M.; Leclercq, S.; Schuster, K. F. [Institut de RadioAstronomie Millimetrique (IRAM), Saint Martin d'Heres F-38406 (France); Endo, A. [Kavli Institute of NanoScience, Delft University of Technology, 2628 CJ Delft (Netherlands); Baryshev, A.; Baselmans, J. J. A.; Ferrari, L.; Yates, S. J. C, E-mail: monfardini@grenoble.cnrs.fr [SRON, Netherlands Institute for Space Research, 3584 CA Utrecht and 9700 AV Groningen (Netherlands)

2011-06-01T23:59:59.000Z

275

Recommendation 195: Mitigation of Contamination in Bear Creek Burial Grounds  

Broader source: Energy.gov [DOE]

The ORSSAB requests DOE provide possible remedial actions to mitigate releases of contamination from Bear Creek Burial Grounds.

276

Cooperative heat transfer and ground coupled storage system  

DOE Patents [OSTI]

A cooperative heat transfer and ground coupled storage system wherein collected solar heat energy is ground stored and permitted to radiate into the adjacent ground for storage therein over an extended period of time when such heat energy is seasonally maximally available. Thereafter, when said heat energy is seasonally minimally available and has propagated through the adjacent ground a substantial distance, the stored heat energy may be retrieved by a circumferentially arranged heat transfer means having a high rate of heat transfer.

Metz, Philip D. (Rocky Point, NY)

1982-01-01T23:59:59.000Z

277

Highly Mismatched Alloys for Intermediate Band Solar Cells  

SciTech Connect (OSTI)

It has long been recognized that the introduction of a narrow band of states in a semiconductor band gap could be used to achieve improved power conversion efficiency in semiconductor-based solar cells. The intermediate band would serve as a ''stepping stone'' for photons of different energy to excite electrons from the valence to the conduction band. An important advantage of this design is that it requires formation of only a single p-n junction, which is a crucial simplification in comparison to multijunction solar cells. A detailed balance analysis predicts a limiting efficiency of more than 50% for an optimized, single intermediate band solar cell. This is higher than the efficiency of an optimized two junction solar cell. Using ion beam implantation and pulsed laser melting we have synthesized Zn{sub 1-y}Mn{sub y}O{sub x}Te{sub 1-x} alloys with x<0.03. These highly mismatched alloys have a unique electronic structure with a narrow oxygen-derived intermediate band. The width and the location of the band is described by the Band Anticrossing model and can be varied by controlling the oxygen content. This provides a unique opportunity to optimize the absorption of solar photons for best solar cell performance. We have carried out systematic studies of the effects of the intermediate band on the optical and electrical properties of Zn{sub 1-y}Mn{sub y}O{sub x}Te{sub 1-x} alloys. We observe an extension of the photovoltaic response towards lower photon energies, which is a clear indication of optical transitions from the valence to the intermediate band.

Walukiewicz, W.; Yu, K.M.; Wu, J.; Ager III, J.W.; Shan, W.; Scrapulla, M.A.; Dubon, O.D.; Becla, P.

2005-03-21T23:59:59.000Z

278

Ag/AgBr/g-C{sub 3}N{sub 4}: A highly efficient and stable composite photocatalyst for degradation of organic contaminants under visible light  

SciTech Connect (OSTI)

Graphical abstract: Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed excellent photocatalytic activities on the degradation of methyl orange (MO) under visible light. The improved photocatalytic performance and stability of Ag/AgBr/g-C{sub 3}N{sub 4} originated from the synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. ·O{sub 2}?, one of the reactive species, was responsible for the photodegradation of MO compared to H+ and ·OH. - Highlights: • Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalyst was reported. • Ag/AgBr/g-C{sub 3}N{sub 4} had novel energy band combination between AgBr and g-C{sub 3}N{sub 4}. • Synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. • Electron trapping role of metallic Ag dominated the stability of Ag/AgBr/g-C{sub 3}N{sub 4}. - Abstract: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts were constructed via deposition–precipitation method and extensively characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and UV–vis diffuse reflectance spectroscopy (DRS). Under visible light (? > 420 nm), Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed much higher photocatalytic activities than those of Ag/AgBr and g-C{sub 3}N{sub 4} for degradation of methyl orange (MO). 50% Ag/AgBr/g-C{sub 3}N{sub 4} presented the best photocatalytic performance, which was mainly attributed to the synergistic effects of AgBr/g-C{sub 3}N{sub 4} interface and the in situ metallic Ag nanoparticles for efficiently separating electron–hole pairs. Furthermore, Ag/AgBr/g-C{sub 3}N{sub 4} remained good photocatalytic activity through 5 times of cycle experiments. Additionally, the radical scavengers experiment indicated that ·O{sub 2}{sup ?} was the main reactive species for the MO degradation under visible light.

Cao, Jing, E-mail: caojing@mail.ipc.ac.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China); Zhao, Yijie; Lin, Haili; Xu, Benyan [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); Chen, Shifu, E-mail: chshifu@chnu.edu.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China)

2013-10-15T23:59:59.000Z

279

On Termination and Derivation Lengths for Ground Rewrite Systems  

E-Print Network [OSTI]

On Termination and Derivation Lengths for Ground Rewrite Systems Dieter Hofbauer 1 Universit¨at GH@theory.informatik.uni­kassel.de Abstract. It is shown that for terminating ground term rewrite systems the length of derivations a suitable interpretation into the natural numbers. Terminating ground systems are not necessarily

Giesl, Juergen

280

Overcoming Barriers to Ground Source Heat Pumps in California  

E-Print Network [OSTI]

Overcoming Barriers to Ground Source Heat Pumps in California Geothermal Resources Development Account http://www.energy.ca.gov/geothermal/ grda.html May 2011 The Issue Ground source heat pumps can far made little impact in California. Estimates are that adoption of ground source heat pumps

Note: This page contains sample records for the topic "ground visible band" 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

Basic Ground-Water Hydrology By RALPH C. HEATH  

E-Print Network [OSTI]

#12;Basic Ground-Water Hydrology By RALPH C. HEATH Prepared in cooperation with the North Carolina., 1983, Basic ground-water hydrology: U .S. Geological Survey Water-Supply Paper 2220, 86 p. Library of Congress Cataloging-in-Publications Data Heath, Ralph C . Basic ground-water hydrology (Geological Survey

Sohoni, Milind

282

ADVANCES IN MODELING OF GROUND-SOURCE HEAT  

E-Print Network [OSTI]

ADVANCES IN MODELING OF GROUND-SOURCE HEAT PUMP SYSTEMS By ANDREW D. CHIASSON Bachelor of Applied 1999 #12;ii ADVANCES IN MODELING OF GROUND-SOURCE HEAT PUMP SYSTEMS Thesis Approved: Thesis Adviser..............................................................................................................1 1.1. Overview of Ground-Source Heat Pump Systems ..............................................1 1

283

DESIGN OF AN EXPERIMENTAL FACILITY FOR HYBRID GROUND SOURCE HEAT  

E-Print Network [OSTI]

DESIGN OF AN EXPERIMENTAL FACILITY FOR HYBRID GROUND SOURCE HEAT PUMP SYSTEMS By SHAWN ALEX HERN.1 HYBRID GROUND SOURCE HEAT PUMP SYSTEM DESIGN........................................2-3 2.1.1 Design...............................................................................2-5 2.2 HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION................................2-9 3

284

APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO  

E-Print Network [OSTI]

APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO BUILDINGS AND BRIDGE DECKS. By MAHADEVAN Chapter Page 1. Introduction 1.1. Overview of hybrid ground source heat pump systems 1.2. Literature review 1.3. Thesis objective and scope 2. Optimal sizing of hybrid ground source heat pump system

285

Regional Estimation of Total Recharge to Ground Water in Nebraska  

E-Print Network [OSTI]

)over long periods of time when the potential change in ground water storage becomes negligible compared storage other than discharge to streams. One such loss term is evapotranspiration (ET) from ground waterRegional Estimation of Total Recharge to Ground Water in Nebraska by Jozsef Szilagyi1m2,F. Edwin

Szilagyi, Jozsef

286

Materialized community ground models for large-scale earthquake simulation  

E-Print Network [OSTI]

Materialized community ground models for large-scale earthquake simulation Steven W. Schlosser to ground motion sim- ulations, in which ground model datasets are fully materi- alized into octress stored as a service techniques in which scientific computation and storage services become more tightly intertwined. 1

Shewchuk, Jonathan

287

DEVELOPMENTS IN GROUND WATER HYDROLOGY : AN OVERVIEW C. P. Kumar  

E-Print Network [OSTI]

. Surface water storage and ground water withdrawal are traditional engineering approaches which of storage and circulation as ground water. The large alluvial tract extending over 2000 km in length from which allows ground water storage in the weathered residium and its circulation in the underlying

Kumar, C.P.

288

Quantification of UV-Visible and Laser Spectroscopic Techniques for Materials Accountability and Process Control  

SciTech Connect (OSTI)

Ultraviolet–visible spectroscopy (UV–Visible) and time-resolved laser fluorescence spectroscopy (TRLFS) optical techniques can permit on-line analysis of actinide elements in a solvent extraction process in real time. These techniques have been used for measuring actinide speciation and concentration under laboratory conditions and are easily adaptable to multiple sampling geometries, such as dip probes, fiber-optic sample cells, and flow-through cell geometries. To fully exploit these techniques, researchers must determine the fundamental speciation of target actinides and the resulting influence on spectroscopic properties. Detection limits, process conditions, and speciation of key actinide components can be established and utilized in a range of areas, particularly those related to materials accountability and process control. Through this project, researchers will develop tools and spectroscopic techniques to evaluate solution extraction conditions and concentrations of U, Pu, and Cm in extraction processes, addressing areas of process control and materials accountability. The team will evaluate UV– Visible and TRLFS for use in solvent extraction-based separations. Ongoing research is examining efficacy of UV-Visible spectroscopy to evaluate uranium and plutonium speciation under conditions found in the UREX process and using TRLFS to evaluate Cm speciation and concentration in the TALSPEAK process. A uranyl and plutonium nitrate UV–Visible spectroscopy study met with success, which supports the utility and continued exploration of spectroscopic methods for evaluation of actinide concentrations and solution conditions for other aspects of the UREX+ solvent extraction scheme. This project will ex examine U and Pu absorbance in TRUEX and TALSPEAK, perform detailed examination of Cm in TRUEX and TALSPEAK, study U laser fluorescence, and apply project data to contactors. The team will also determine peak ratios as a function of solution concentrations for the UV-Visible spectroscopy studies. The use of TRLFS to examine Cm and U will provide data to evaluate lifetime, peak location, and peak ratios (mainly for U). The bases for the spectroscopic techniques have been investigated, providing fundamental evidence for the application’s utility.

Czerwinski, Kenneth

2013-09-13T23:59:59.000Z

289

Photovoltaic module mounting clip with integral grounding  

DOE Patents [OSTI]

An electrically conductive mounting/grounding clip, for use with a photovoltaic assembly of the type having an electrically conductive frame, comprises an electrically conductive body. The body has a central portion and first and second spaced-apart arms extending generally perpendicular to the central portion. Each arm has an outer portion with each outer portion having an outer end. At least one frame surface-disrupting element is at each outer end. The central portion defines a plane with the frame surface-disrupting elements pointing towards the plane. In some examples each arm extends from the central portion at an acute angle to the plane.

Lenox, Carl J.

2008-10-14T23:59:59.000Z

290

Coal mine ground control. 3rd ed.  

SciTech Connect (OSTI)

The third edition not only completely revises and updates the original subject areas, but also is broadened to include a number of new topics such as high horizontal stresses, computer modeling, and highwall stability. The subject areas covered in this book define the current field of coal mine ground control, except for the recently emerging topic of mine seals and some conventional subjects such as coal/rock cutting and impoundment dams. It contains 1,134 references from all published sources, and archived since 1876.

Peng, S.S.

2008-09-15T23:59:59.000Z

291

Geometric renormalization below the ground state  

E-Print Network [OSTI]

The caloric gauge was introduced by Tao with studying large data energy critical wave maps mapping from $\\mathbf{R}^{2+1}$ to hyperbolic space $\\mathbf{H}^m$ in view. In \\cite{BIKT} Bejenaru, Ionescu, Kenig, and Tataru adapted the caloric gauge to the setting of Schr\\"odinger maps from $\\mathbf{R}^{d + 1}$ to the standard sphere $S^2 \\hookrightarrow \\mathbf{R}^3$ with initial data small in the critical Sobolev norm. Here we develop the caloric gauge in a bounded geometry setting with a construction valid up to the ground state energy.

Paul Smith

2011-12-06T23:59:59.000Z

292

Best Possible Strategy for Finding Ground States  

SciTech Connect (OSTI)

Finding the ground state of a system with a complex energy landscape is important for many physical problems including protein folding, spin glasses, chemical clusters, and neural networks. Such problems are usually solved by heuristic search methods whose efficacy is judged by empirical performance on selected examples. We present a proof that, within the large class of algorithms that simulate a random walk on the landscape, threshold accepting is the best possible strategy. In particular, it can perform better than simulated annealing and Tsallis statistics. Our proof is the first example of a provably optimal strategy in this area.

Franz, Astrid; Hoffmann, Karl Heinz; Salamon, Peter

2001-06-04T23:59:59.000Z

293

Ground-Based Microwave Radiometer Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Big Sky LearningGetGraphene's 3DRise |EnergyVehicles andGround-Based

294

Ground Gravity Survey | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump to: navigation,2004)EnergyGround Gravity

295

Ground Magnetics (Nannini, 1986) | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump to: navigation,2004)EnergyGround

296

120 Ground Water Monitoring & Remediation 32, no. 1/ Winter 2012/pages 120130 NGWA.org Ground Water Monitoring & Remediation  

E-Print Network [OSTI]

120 Ground Water Monitoring & Remediation 32, no. 1/ Winter 2012/pages 120­130 NGWA.org Ground Water Monitoring & Remediation © 2011, National Ground Water Association. Published 2011. This article known as emerging contaminants (ECs) to surrounding groundwater and surface water. ECs consist

297

Volume-scalable high-brightness three-dimensional visible light source  

DOE Patents [OSTI]

A volume-scalable, high-brightness, electrically driven visible light source comprises a three-dimensional photonic crystal (3DPC) comprising one or more direct bandgap semiconductors. The improved light emission performance of the invention is achieved based on the enhancement of radiative emission of light emitters placed inside a 3DPC due to the strong modification of the photonic density-of-states engendered by the 3DPC.

Subramania, Ganapathi; Fischer, Arthur J; Wang, George T; Li, Qiming

2014-02-18T23:59:59.000Z

298

Visibility of cold atomic gases in optical lattices for finite temperatures  

SciTech Connect (OSTI)

In nearly all experiments with ultracold atoms time-of-flight pictures are the only data available. In this paper we present an analytical strong-coupling calculation for those time-of-flight pictures of bosons in a three-dimensional optical lattice in the Mott phase. This allows us to determine the visibility, which quantifies the contrast of peaks in the time-of-flight pictures, and we suggest how to use it as a thermometer.

Hoffmann, Alexander [Arnold Sommerfeld Center, Ludwig Maximilian Universitaet, Theresienstrasse 37, 80333 Muenchen (Germany); Pelster, Axel [Fachbereich Physik, Universitaet Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg (Germany); Fachbereich Physik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin (Germany)

2009-05-15T23:59:59.000Z

299

Modified Visible and Infrared Optical Design for the ITER Upper Ports  

SciTech Connect (OSTI)

This document reports the results of a follow-on optical design study of visible-light and infrared optics for the ITER upper ports, performed by LLNL under contract for the US ITER Project Office. The major objectives of this work are to move the viewing aperture closer to the plasma so that the optical path does not cut through any adjacent blanket shield module other than the module designated for the port; move optics forward into the port tube to increase the aperture size and therefore improve the spatial resolution; assess the trade-off between spatial resolution and spatial coverage by reducing the field of view; and create a mechanical model with a neutron labyrinth. Here we show an optical design incorporating all these aspects. The new design fits into a 360 mm ID tube, as did the previous design. The entrance aperture is increased from 10 mm to 21 mm, with a corresponding increase in spatial resolution. The Airy disk diameter for 3.8 {micro}m wavelength IR light is 5.1 mm at the most distant target point in the field of view. The field of view is reduced from 60 toroidal degrees (full toroidal coverage with 6 cameras) to 50 toroidal degrees. The 10 degrees eliminated are those nearest the camera, which have the poorest view of the divertor plate and in fact saw little of the plate. The Cassegrain telescope that was outside the vacuum windows in the previous design is now in vacuum, along with lenses for visible light. The Cassegrain for visible light is eliminated. An additional set of optical relay lenses is added for the visible and for the IR.

Lasnier, C; Seppala, L; Morris, K

2008-04-24T23:59:59.000Z

300

On the feasibility of determining slant-range visibility by using measurements of scattered light  

E-Print Network [OSTI]

and scattering was not objectionably unrealistic. Six model atmospheres were deter- mined with the parameters based on measurements of the absorption and scattering coefficients in the atmosphere. The aerosols in urban areas (industrial pollution) were found... of the continuous increase in the polluting material contained in the atmosphere. The degree of increase in pollution can be estimated somewhat by the continual annual decrease in visibility reported in visibil- ity observations (Neiburger, 1955). The procedures...

Newcomb, Fred Richard

1972-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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 role of high-level calculations in the assignment of the Q-band spectra of chlorophyll  

SciTech Connect (OSTI)

We recently established a novel assignment of the visible absorption spectrum of chlorophyll-a that sees the two components Q{sub x} and Q{sub y} of the low-energy Q band as being intrinsically mixed by non-adiabatic coupling. This ended 50 years debate as to the nature of the Q bands, with prior discussion poised only in the language of the Born-Oppenheimer and Condon approximations. The new assignment presents significant ramifications for exciton transport and quantum coherence effects in photosystems. Results from state of the art electronic structure calculations have always been used to justify assignments, but quantitative inaccuracies and systematic failures have historically limited usefulness. We examine the role of CAM-B3LYP time-dependent density-functional theory (TD-DFT) and Symmetry Adapted Cluster-Configuration Interaction (SAC-CI) calculations in first showing that all previous assignments were untenable, in justifying the new assignment, in making some extraordinary predictions that were vindicated by the new assignment, and in then identifying small but significant anomalies in the extensive experimental data record.

Reimers, Jeffrey R. [School of Physics and Materials Science, The University of Technology, Sydney NSW (Australia); Cai, Zheng-Li [School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane QLD4001 (Australia); Kobayashi, Rika [Australian National University Supercomputer Facility, Mills Rd, Canberra, ACT 0200 (Australia); Rätsep, Margus [Institute of Physics, University of Tartu, Riia 142, 51014 Tartu (Estonia); Freiberg, Arvi [Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia and Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu (Estonia); Krausz, Elmars [Research School of Chemistry, The Australian National University, Canberra 2601 (Australia)

2014-10-06T23:59:59.000Z

302

Synchrotron-based far infrared study of the rotation-vibration-inversion spectrum of silacyclobutane below 500 cm{sup ?1}: The ?{sub 29} and ?{sub 30} bands  

SciTech Connect (OSTI)

Fourier transform spectra of the four-membered heterocycle silacyclobutane (c-C{sub 3}H{sub 8}Si) were recorded in the far infrared region from 100 to 500 cm{sup ?1} with a maximum resolution of 0.000959 cm{sup ?1} using synchrotron radiation from the Canadian Light Source. The two fundamental bands observed in this region correspond to motions best described as the out-of-plane modes related to ring puckering (?{sub 30}) at ?158 cm{sup ?1} and SiH{sub 2} rocking (?{sub 29}) at ?410 cm{sup ?1}. Both bands exhibit complex, dense spectral patterns that arise from ring inversion tunneling of the puckered SCB ring through a planar (C{sub 2v}) intermediate configuration. Analysis of these patterns revealed rotation-vibration transitions between states of the same inversion symmetry as well as rotation-vibration-inversion transitions that connect states of different inversion symmetry. Infrared ground state combination differences from 1871 pairs of P and R branch transitions were used to accurately determine the spectroscopic parameters for the tunneling-doubled ground state based on a broad range of quantum levels. With the ground state energy levels well-determined, 8255 infrared transitions were assigned and analyzed to derive the band centers, rotational and centrifugal distortion constants for the inversion split ?{sub 29} and ?{sub 30} vibrational states. Comparison with the band centers predicted via DFT (B3LYP) and MP2 calculations [6-311++G(2d,2p)] suggests that anharmonic corrections found via perturbation theory typically agree within 2% when compared with the observed spectrum of SCB.

Chen, Ziqiu; Wijngaarden, Jennifer van, E-mail: vanwijng@cc.umanitoba.ca [Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

2013-12-28T23:59:59.000Z

303

First principles investigation of scaling trends of zirconium silicate interface band offsets  

E-Print Network [OSTI]

First principles investigation of scaling trends of zirconium silicate interface band offsets out to investigate the scaling trends of band offsets at model silicon/zirconium silicate interfaces. Owing to the d character of zirconium silicate conduction bands, the band gap and band offset are shown

Dutton, Robert W.

304

Ground penetrating radar surveys over an alluvial DNAPL site, Paducah Gaseous Diffusion Plant, Kentucky  

SciTech Connect (OSTI)

Ground penetrating radar (GPR) surveys were used to map shallow sands and gravels which are DNAPL migration pathways at the Paducah Gaseous Diffusion Plant in western Kentucky. The sands and gravels occur as paleochannel deposits, at depths of 17-25 ft, embedded in Pleistocene lacustrine clays. More than 30 GPR profiles were completed over the Drop Test Area (DTA) to map the top and base of the paleochannel deposits, and to assess their lateral continuity. A bistatic radar system was used with antenna frequencies of 25 and 50 MHz. An average velocity of 0.25 ft/ns for silty and clayey materials above the paleochannel deposits was established from radar walkaway tests, profiles over culverts of known depth, and comparison of radar sections with borings. In the south portion of the DTA, strong reflections corresponded to the water table at approximately 9-10 ft, the top of the paleochannel deposits at approximately 18 ft, and to gravel horizons within these deposits. The base of these deposits was not visible on the radar sections. Depth estimates for the top of the paleochannel deposits (from 50 records) were accurate to within 2 ft across the southern portion of the DTA. Continuity of these sands and gravels could not be assessed due to interference from air-wave reflections and lateral changes in signal penetration depth. However, the sands and gravels appear to extend across the entire southern portion of the DTA, at depths as shallow as 17 ft. Ringing, air-wave reflections and diffractions from powerlines, vehicles, well casings, and metal equipment severly degraded GPR profiles in the northern portion of the DTA; depths computed from reflection times (where visible) were accurate to within 4 ft in this area. The paleochannel deposits are deeper to the north and northeast where DNAPL has apparently pooled (DNAPL was not directly imaged by the GPR, however). Existing hydrogeological models of the DTA will be revised.

Carpenter, P.J. [Northern Illinois Univ., DeKalb, IL (United States). Dept. of Geology]|[Oak Ridge National Lab., TN (United States); Doll, W.E. [Oak Ridge National Lab., TN (United States); Phillips, B.E. [Paducah Gaseous Diffusion Plant, KY (United States)

1994-09-01T23:59:59.000Z

305

X-Band Photonic Band-Gap Accelerator Structure Breakdown Experiment  

SciTech Connect (OSTI)

In order to understand the performance of photonic band-gap (PBG) structures under realistic high gradient, high power, high repetition rate operation, a PBG accelerator structure was designed and tested at X band (11.424 GHz). The structure consisted of a single test cell with matching cells before and after the structure. The design followed principles previously established in testing a series of conventional pillbox structures. The PBG structure was tested at an accelerating gradient of 65 MV/m yielding a breakdown rate of two breakdowns per hour at 60 Hz. An accelerating gradient above 110 MV/m was demonstrated at a higher breakdown rate. Significant pulsed heating occurred on the surface of the inner rods of the PBG structure, with a temperature rise of 85 K estimated when operating in 100 ns pulses at a gradient of 100 MV/m and a surface magnetic field of 890 kA/m. A temperature rise of up to 250 K was estimated for some shots. The iris surfaces, the location of peak electric field, surprisingly had no damage, but the inner rods, the location of the peak magnetic fields and a large temperature rise, had significant damage. Breakdown in accelerator structures is generally understood in terms of electric field effects. These PBG structure results highlight the unexpected role of magnetic fields in breakdown. The hypothesis is presented that the moderate level electric field on the inner rods, about 14 MV/m, is enhanced at small tips and projections caused by pulsed heating, leading to breakdown. Future PBG structures should be built to minimize pulsed surface heating and temperature rise.

Marsh, Roark A.; /MIT /MIT /NIFS, Gifu /JAERI, Kyoto /LLNL, Livermore; Shapiro, Michael A.; Temkin, Richard J.; /MIT; Dolgashev, Valery A.; Laurent, Lisa L.; Lewandowski, James R.; Yeremian, A.Dian; Tantawi, Sami G.; /SLAC

2012-06-11T23:59:59.000Z

306

Specific-heat discontinuity in impure two-band superconductors  

E-Print Network [OSTI]

The Ginzburg-Landau coefficients and the jump of the specific heat are calculated for a disordered two-band superconductor. We start with the analysis of a more general case with arbitrary anisotropy. While the specific-heat discontinuity...

Mishonov, TM; Penev, ES; Indekeu, JO; Pokrovsky, Valery L.

2003-01-01T23:59:59.000Z

307

Direct observation of a dispersionless impurity band in hydrogenated graphene  

E-Print Network [OSTI]

We show with angle-resolved photoemission spectroscopy that a new energy band appears in the electronic structure of electron-doped hydrogenated monolayer graphene (H-graphene). Its occupation can be controlled with the ...

Haberer, D.

308

Global estimation of precipitation using opaque microwave bands  

E-Print Network [OSTI]

This thesis describes the use of opaque microwave bands for global estimation of precipitation rate. An algorithm was developed for estimating instantaneous precipitation rate for the Advanced Microwave Sounding Unit (AMSU) ...

Chen, Frederick Wey-Min, 1975-

2004-01-01T23:59:59.000Z

309

Phenomenological band structure model of magnetic coupling in semiconductors  

E-Print Network [OSTI]

Phenomenological band structure model of magnetic coupling in semiconductors Gustavo M. Dalpian a,1­18]. Several models have been proposed to explain the phenomena, including the phenomenological Zener

Gong, Xingao

310

angstrom extinction band: Topics by E-print Network  

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

Galactic extinction curve, which implies that the properties of dust in the extragalactic enviroment are similar to those of the Milky Way. The ratio of the total V band extinction...

311

An X-Band Gun Test Area at SLAC  

SciTech Connect (OSTI)

The X-Band Test Area (XTA) is being assembled in the NLCTA tunnel at SLAC to serve as a test facility for new RF guns. The first gun to be tested will be an upgraded version of the 5.6 cell, 200 MV/m peak field X-band gun designed at SLAC in 2003 for the Compton Scattering experiment run in ASTA. This new version includes some features implemented in 2006 on the LCLS gun such as racetrack couplers, increased mode separation and elliptical irises. These upgrades were developed in collaboration with LLNL since the same gun will be used in an injector for a LLNL Gamma-ray Source. Our beamline includes an X-band acceleration section which takes the electron beam up to 100 MeV and an electron beam measurement station. Other X-Band guns such as the UCLA Hybrid gun will be characterized at our facility.

Limborg-Deprey, C.; Adolphsen, C.; Chu, T.S.; Dunning, M.P.; Jobe, R.K.; Jongewaard, E.N.; Hast, C.; Vlieks, A.E.; Wang, F.; Walz, D.R.; /SLAC; Marsh, R.A.; Anderson, S.G.; Hartemann, F.V.; Houck, T.L.; /LLNL, Livermore

2012-09-07T23:59:59.000Z

312

Substrate-induced band gap opening in epitaxial graphene  

E-Print Network [OSTI]

H.A. Electronic states of graphene nanoribbons studied withS.G. Louie. Energy gaps in graphene nanoribbons. Phys. Rev.band-gap engineering of graphene nanoribbons. Phys. Rev.

2008-01-01T23:59:59.000Z

313

Comparing local vs. global visible and near-infrared (VisNIR) diffuse reflectance spectroscopy (DRS) calibrations for the prediction of soil clay, organic C  

E-Print Network [OSTI]

Comparing local vs. global visible and near-infrared (VisNIR) diffuse reflectance spectroscopy (DRS Elsevier B.V. All rights reserved. 1. Introduction Visible and near-infrared (VisNIR) diffuse reflectance

Lawrence, Rick L.

314

Comparative cytotaxonomy in the tribe Bovini studied by banding techniques  

E-Print Network [OSTI]

Committee: Dr. James E. Womack Chromosomes of eight species of the tribe Bovini were studied by G ? banding, C ? banding and silver staining techniques. The results of this comparative cytogenetic study support the theory that Robertsonian fusion... in the tribe Bovini whose species appear to differ by a series of centromeric fusions. The phylogenetic tree derived from the cytogenetic data of this study is not consistent with morphological and behavioral trees previously described for the tribe Bovini...

Rich, Donna Carol

2012-06-07T23:59:59.000Z

315

Shear band dynamics from a mesoscopic modeling of plasticity  

E-Print Network [OSTI]

The ubiquitous appearance of regions of localized deformation (shear bands) in different kinds of disordered materials under shear is studied in the context of a mesoscopic model of plasticity. The model may or may not include relaxational (aging) effects. In the absence of relaxational effects the model displays a monotonously increasing dependence of stress on strain-rate, and stationary shear bands do not occur. However, in start up experiments transient (although long lived) shear bands occur, that widen without bound in time. I investigate this transient effect in detail, reproducing and explaining a t^1/2 law for the thickness increase of the shear band that has been obtained in atomistic numerical simulations. Relaxation produces a negative sloped region in the stress vs. strain-rate curve that stabilizes the formation of shear bands of a well defined width, which is a function of strain-rate. Simulations at very low strain-rates reveal a non-trivial stick-slip dynamics of very thin shear bands that has relevance in the study of seismic phenomena. In addition, other non-stationary processes, such as stop-and-go, or strain-rate inversion situations display a phenomenology that matches very well the results of recent experimental studies.

E. A. Jagla

2010-06-07T23:59:59.000Z

316

Single-band and Dual-band Beam Switching Systems and Offset-fed Beam Scanning Reflectarray  

E-Print Network [OSTI]

The reflectarray has been considered as a suitable candidate to replace the conventional parabolic reflectors because of its high-gain, low profile, and beam reconfiguration capability. Beam scanning capability and multi-band operation...

Lee, Jungkyu

2012-07-16T23:59:59.000Z

317

Direct comparison of EUV and visible-light interferometries Kenneth A. Goldberg*a, Patrick Naulleaua, SangHun Leea,b, Chang Changa,b, Cynthia Bresloffc,  

E-Print Network [OSTI]

Direct comparison of EUV and visible-light interferometries Kenneth A. Goldberg*a, PatrickÃ? EUV imaging systems provide the first direct comparisons of visible-light and at-wavelength EUV-coated Schwarzschild objectives are discussed. Favorable agreement has been achieved between EUV and visible-light

318

Cleanup Verification Package for the 618-8 Burial Ground  

SciTech Connect (OSTI)

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

M. J. Appel

2006-08-10T23:59:59.000Z

319

Sun--Grounding Social Sciences in Cognitive Sciences I Introduction  

E-Print Network [OSTI]

G Sun--Grounding Social Sciences in Cognitive Sciences I Introduction Sun_8928_001_main.indd 1 1/10/2012 6:35:15 PM #12;G Sun--Grounding Social Sciences in Cognitive Sciences Sun_8928_001_main.indd 2 1/10/2012 6:35:15 PM #12;G Sun--Grounding Social Sciences in Cognitive Sciences 1 Prolegomenato

Sun, Ron

320

Visible Light Photocatalysis with Platinized Rutile TiO2 for Aqueous Organic Oxidation  

E-Print Network [OSTI]

chemicals containing different functional groups (formic acid, salicylic acid, 4-chlorophenol, 2,4,6-trichlorophenol, diethyl phosphoramidate) were selected for photooxidationtestswith 1/2 wt about 4% of the solar spectrum, the need to develop photocatalysts with smaller band gaps is paramount.6

Boolchand, Punit

Note: This page contains sample records for the topic "ground visible band" 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

E-Print Network 3.0 - abnormal protein bands Sample Search Results  

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

protein bands Search Powered by Explorit Topic List Advanced Search Sample search results for: abnormal protein bands Page: << < 1 2 3 4 5 > >> 1 An Introduction to Protein...

322

Scent marking in wild banded mongooses: 2. Intrasexual overmarking and competition between males  

E-Print Network [OSTI]

Scent marking in wild banded mongooses: 2. Intrasexual overmarking and competition between males on wild banded mongooses, Mungos mungo, suggests that overmarking may primarily affect behavioural mating

Rüedi, Peter

323

Concept development for the ITER equatorial port visible/infrared wide angle viewing system  

SciTech Connect (OSTI)

The ITER equatorial port visible/infrared wide angle viewing system concept is developed from the measurement requirements. The proposed solution situates 4 viewing systems in the equatorial ports 3, 9, 12, and 17 with 4 views each (looking at the upper target, the inner divertor, and tangentially left and right). This gives sufficient coverage. The spatial resolution of the divertor system is 2 times higher than the other views. For compensation of vacuum-vessel movements, an optical hinge concept is proposed. Compactness and low neutron streaming is achieved by orienting port plug doglegs horizontally. Calibration methods, risks, and R and D topics are outlined.

Reichle, R.; Beaumont, B.; Boilson, D.; Bouhamou, R.; Direz, M.-F.; Encheva, A.; Henderson, M.; Kazarian, F.; Lamalle, Ph.; Lisgo, S.; Mitteau, R.; Patel, K. M.; Pitcher, C. S.; Pitts, R. A.; Prakash, A.; Raffray, R.; Schunke, B.; Snipes, J.; Diaz, A. Suarez; Udintsev, V. S. [ITER Organization, Route de Vinon-sur-Verdon, 13115 St Paul-lez-Durance (France); and others

2012-10-15T23:59:59.000Z

324

Enhanced visible and near-infrared capabilities of the JET mirror-linked divertor spectroscopy system  

SciTech Connect (OSTI)

The mirror-linked divertor spectroscopy diagnostic on JET has been upgraded with a new visible and near-infrared grating and filtered spectroscopy system. New capabilities include extended near-infrared coverage up to 1875 nm, capturing the hydrogen Paschen series, as well as a 2 kHz frame rate filtered imaging camera system for fast measurements of impurity (Be II) and deuterium D?, D?, D? line emission in the outer divertor. The expanded system provides unique capabilities for studying spatially resolved divertor plasma dynamics at near-ELM resolved timescales as well as a test bed for feasibility assessment of near-infrared spectroscopy.

Lomanowski, B. A., E-mail: b.a.lomanowski@durham.ac.uk; Sharples, R. M. [Centre for Advanced Instrumentation, Department of Physics, Durham University, Durham DH1 3LE (United Kingdom); Meigs, A. G.; Conway, N. J.; Zastrow, K.-D.; Heesterman, P.; Kinna, D. [EURATOM/CCFE Fusion Association, Culham Science Center, Abingdon OX14 3DB (United Kingdom); Collaboration: JET-EFDA Team

2014-11-15T23:59:59.000Z

325

Visible Light Induced Photodesorption of NO from the α-Cr2O3(0001)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500IIVasudhaSurface. | EMSL Visible Light Induced

326

Ground Gravity Survey At Neal Hot Springs Geothermal Area (Colwell...  

Open Energy Info (EERE)

Technique Ground Gravity Survey Activity Date 2011 - 2011 Usefulness not indicated DOE-funding Unknown Exploration Basis Gravity surveys were conducted to gain a better...

327

Ground Magnetics At Neal Hot Springs Geothermal Area (Colwell...  

Open Energy Info (EERE)

Technique Ground Magnetics Activity Date 2011 - 2011 Usefulness not indicated DOE-funding Unknown Exploration Basis Magnetic surveys were conducted to gain a better...

328

Hybrid Ground Source System Analysis and Tool Development  

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

Development Principal Investigator Scott Hackel, Energy Center of Wisconsin Ground Source Heat Pumps Demonstration Projects May 18, 2010 This presentation does not contain any...

329

Monitoring SERC Technologies —Geothermal/Ground Source Heat Pumps  

Broader source: Energy.gov [DOE]

A webinar by National Renewable Energy Laboratory Project Leader Dave Peterson about Geothermal/Ground Source Heat Pumps and how to properly monitor its installation.

330

LANL breaks ground on key sediment control project  

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

Sediment control project LANL breaks ground on key sediment control project Called "grade-control" structures, the approximately 2 million features are up to eight feet high and...

331

Ground Gravity Survey At Dixie Valley Geothermal Area (Allis...  

Open Energy Info (EERE)

Activity Details Location Dixie Valley Geothermal Area Exploration Technique Ground Gravity Survey Activity Date 1999 - 2000 Usefulness not indicated DOE-funding Unknown...

332

Ground Gravity Survey At Kilauea East Rift Geothermal Area (Broyles...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Kilauea East Rift Geothermal Area (Broyles, Et Al., 1979) Exploration...

333

Ground Gravity Survey At Kilauea East Rift Geothermal Area (Leslie...  

Open Energy Info (EERE)

Details Location Kilauea East Rift Geothermal Area Exploration Technique Ground Gravity Survey Activity Date 1998 - 1998 Usefulness useful DOE-funding Unknown Exploration...

334

Ground Gravity Survey At Neal Hot Springs Geothermal Area (U...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Neal Hot Springs Geothermal Area (U.S. Geothermal Inc., 2007) Exploration...

335

Ground Gravity Survey At Kilauea East Rift Geothermal Area (FURUMOTO...  

Open Energy Info (EERE)

Details Location Kilauea East Rift Geothermal Area Exploration Technique Ground Gravity Survey Activity Date 1974 - 1974 Usefulness useful DOE-funding Unknown Exploration...

336

Ground Gravity Survey At Mt Princeton Hot Springs Geothermal...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Mt Princeton Hot Springs Geothermal Area (Case, Et Al., 1984) Exploration...

337

Ground Gravity Survey At Baltazor Hot Springs Area (Isherwood...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Baltazor Hot Springs Area (Isherwood & Mabey, 1978) Exploration Activity...

338

Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area...  

Open Energy Info (EERE)

Details Location Roosevelt Hot Springs Geothermal Area Exploration Technique Ground Gravity Survey Activity Date 1985 - 1985 Usefulness useful DOE-funding Unknown Exploration...

339

Ground Gravity Survey At Blue Mountain Geothermal Area (Fairbank...  

Open Energy Info (EERE)

Fairbank Engineering Ltd, 2003) Exploration Activity Details Location Blue Mountain Geothermal Area Exploration Technique Ground Gravity Survey Activity Date Usefulness not...

340

artificial ground freezing: Topics by E-print Network  

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

Moorman, Brian 6 Ground state lost but degeneracy found: the effective thermodynamics of artificial spin ice Condensed Matter (arXiv) Summary: We analyze the rotational...

Note: This page contains sample records for the topic "ground visible band" 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

Ground Gravity Survey At Under Steamboat Springs Area (Warpinski...  

Open Energy Info (EERE)

Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Under Steamboat Springs Area (Warpinski,...

342

Optimal Ground-Source Heat Pump System Design  

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

Ground-Source Heat Pump System Design May 19, 2010 Geothermal Technologies Program 2010 Peer Review ENVIRON International PI : Metin Ozbek Track : GSHP Demonstration Projects This...

343

Renewable Energy Opportunities at Yuma Proving Ground, Arizona  

SciTech Connect (OSTI)

This document provides an overview of renewable resource potential at Yuma Proving Ground, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations.

Orrell, Alice C.; Kora, Angela R.; Russo, Bryan J.; Williamson, Jennifer L.; Weimar, Mark R.; Gorrissen, Willy J.; Dixon, Douglas R.

2010-06-30T23:59:59.000Z

344

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

SciTech Connect (OSTI)

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

E. J. Farris and H. M. Sulloway

2008-01-10T23:59:59.000Z

345

Ground Electromagnetic Survey At Kilauea East Rift Geothermal...  

Open Energy Info (EERE)

horizontally on the ground. Interpretation of the data was made using an inversion computer program and the primary magnetic field was estimated directly from the data rather...

346

Ground Gravity Survey At Lake City Hot Springs Area (Warpinski...  

Open Energy Info (EERE)

Lake City Hot Springs Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Lake City Hot...

347

Ground Gravity Survey At Long Valley Caldera Geothermal Area...  

Open Energy Info (EERE)

Battaglia, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Long Valley Caldera Geothermal Area (Battaglia,...

348

Critical Evaluation of the ISCCP Simulator Using Ground-Based Remote Sensing Data  

SciTech Connect (OSTI)

Given the known shortcomings in representing clouds in Global Climate Models (GCM) comparisons with observations are critical. The International Satellite Cloud Climatology Project (ISCCP) diagnostic products provide global descriptions of cloud top pressure and column optical depth that extends over multiple decades. The necessary limitations of the ISCCP retrieval algorithm require that before comparisons can be made between model output and ISCCP results the model output must be modified to simulate what ISCCP would diagnose under the simulated circumstances. We evaluate one component of the so-called ISCCP simulator in this study by comparing ISCCP and a similar algorithm with various long-term statistics derived from the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Climate Research Facility ground-based remote sensors. We find that were a model to simulate the cloud radiative profile with the same accuracy as can be derived from the ARM data, then the likelihood of that occurrence being placed in the same cloud top pressure and optical depth bin as ISCCP of the 9 bins that have become standard ranges from 30% to 70% depending on optical depth. While the ISCCP simulator improved the agreement of cloud-top pressure between ground-based remote sensors and satellite observations, we find minor discrepancies due to the parameterization of cloud top pressure in the ISCCP simulator. The primary source of error seems to be related to discrepancies in visible optical depth that are not accounted for in the ISCCP simulator. We show that the optical depth discrepancies are largest when the assumptions necessary for plane parallel radiative transfer optical depths retrievals are violated.

Mace, G G; Houser, S; Benson, S; Klein, S A; Min, Q

2009-11-02T23:59:59.000Z

349

Global-to-local incompatibility, monogamy of entanglement, and ground-state dimerization: Theory and observability of quantum frustration in systems with competing interactions  

E-Print Network [OSTI]

Frustration in quantum many body systems is quantified by the degree of incompatibility between the local and global orders associated, respectively, to the ground states of the local interaction terms and the global ground state of the total many-body Hamiltonian. This universal measure is bounded from below by the ground-state bipartite block entanglement. For many-body Hamiltonians that are sums of two-body interaction terms, a further inequality relates quantum frustration to the pairwise entanglement between the constituents of the local interaction terms. This additional bound is a consequence of the limits imposed by monogamy on entanglement shareability. We investigate the behavior of local pair frustration in quantum spin models with competing interactions on different length scales and show that valence bond solids associated to exact ground-state dimerization correspond to a transition from generic frustration, i.e. geometric, common to classical and quantum systems alike, to genuine quantum frustration, i.e. solely due to the non-commutativity of the different local interaction terms. We discuss how such frustration transitions separating genuinely quantum orders from classical-like ones are detected by observable quantities such as the static structure factor and the interferometric visibility.

S. M. Giampaolo; B. C. Hiesmayr; F. Illuminati

2015-01-25T23:59:59.000Z

350

Landscape of fear visible from space Elizabeth M. P. Madin1  

E-Print Network [OSTI]

Australia's Great Barrier Reef revealed distinct halo patterns within algal beds surrounding patch reefs. Ground truth surveys confirmed that, as predicted, algal canopy height increases with distance from reef, with enlightening results ranging from exposing looting of historical sites to secret prison camp buildups 1 . Here

Madin, Josh

351

Fabric filter versus ESP designs to meet no visible emissions for Brandon shores  

SciTech Connect (OSTI)

This paper investigates the designs of particulate collection equipment to achieve no visible emissions criteria, or a visually clear stack, at the Brandon Shores Station of the Baltimore Gas and Electric Co. The transmissometer opacity corresponding to the ''no visible emissions'' (NVE) criteria for a visually clear plume was established. A stack exit concentration was established to achieve the design instrument opacity. The proposed fabric filter and cold-side electrostatic precipitator (ESP) equipment were evaluated on a technical and economic basis for achieving the design stack exit concentration. The technical evaluation included a comprehensive review of fabric filter and cold-side ESP operating installations and the use of a computer model to predict site-specific ESP performance and expected operating margins. A review of operating installations and use of state-of-the-art computer models demonstrates that conservatively designed fabric filters or cold-side ESP equipment should be capable of achieving an outlet or stack exit concentration of 0.004 gr/acf.

Becker, D.F.; Klopp, A.C.; Kusterer, J.N.; Link, S.A.

1983-01-01T23:59:59.000Z

352

Fabrication and characterization of the source grating for visibility improvement of neutron phase imaging with gratings  

SciTech Connect (OSTI)

The fabrication of gratings including metal deposition processes for highly neutron absorbing lines is a critical issue to achieve a good visibility of the grating-based phase imaging system. The source grating for a neutron Talbot-Lau interferometer is an array of Gadolinium (Gd) structures that are generally made by sputtering, photo-lithography, and chemical wet etching. However, it is very challenging to fabricate a Gd structure with sufficient neutron attenuation of approximately more than 20 {mu}m using a conventional metal deposition method because of the slow Gd deposition rate, film stress, high material cost, and so on. In this article, we fabricated the source gratings for neutron Talbot-Lau interferometers by filling the silicon structure with Gadox particles. The new fabrication method allowed us a very stable and efficient way to achieve a much higher Gadox filled structure than a Gd film structure, and is even more suitable for thermal polychromatic neutrons, which are more difficult to stop than cold neutrons. The newly fabricated source gratings were tested at the polychromatic thermal neutron grating interferometer system of HANARO at the Korea Atomic Energy Research Institute, and the visibilities and images from the neutron phase imaging system with the new source gratings were compared with those fabricated by a Gd deposition method.

Kim, Jongyul [Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of); Nuclear and Quantum Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Lee, Kye Hong; Lim, Chang Hwy; Kim, Taejoo [Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of); Ahn, Chi Won [Nano Fusion Technology Division, National Nanofab Center, Daejeon 305-701 (Korea, Republic of); Cho, Gyuseong [Nuclear and Quantum Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Lee, Seung Wook [School of Mechanical Engineering, Pusan National University, Pusan 609-735 (Korea, Republic of)

2013-06-15T23:59:59.000Z

353

Wide-angle ITER-prototype tangential infrared and visible viewing system for DIII-D  

SciTech Connect (OSTI)

An imaging system with a wide-angle tangential view of the full poloidal cross-section of the tokamak in simultaneous infrared and visible light has been installed on DIII-D. The optical train includes three polished stainless steel mirrors in vacuum, which view the tokamak through an aperture in the first mirror, similar to the design concept proposed for ITER. A dichroic beam splitter outside the vacuum separates visible and infrared (IR) light. Spatial calibration is accomplished by warping a CAD-rendered image to align with landmarks in a data image. The IR camera provides scrape-off layer heat flux profile deposition features in diverted and inner-wall-limited plasmas, such as heat flux reduction in pumped radiative divertor shots. Demonstration of the system to date includes observation of fast-ion losses to the outer wall during neutral beam injection, and shows reduced peak wall heat loading with disruption mitigation by injection of a massive gas puff.

Lasnier, C. J., E-mail: lasnier@LLNL.gov; Allen, S. L.; Ellis, R. E.; Fenstermacher, M. E.; McLean, A. G.; Meyer, W. H.; Morris, K.; Seppala, L. G. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808 (United States); Crabtree, K. [College of Optics, University of Arizona, Tucson, Arizona 85721 (United States); Van Zeeland, M. A. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)

2014-11-15T23:59:59.000Z

354

Robotic end gripper with a band member to engage object  

DOE Patents [OSTI]

An end effector for use with robotic arms and like devices is described that utilizes a flexible band to draw an object against an anvil having a concave surface. One typical convex surface is created by a V-block, with an apex of the V being centrally located. If an object to be grasped is fragile, the contour of the concave surface closely matches the surface of the object. Typically the movement of the band is effected by a linear actuator, with the anvil remaining fixed relative to a support base. Several embodiments are described that utilize variations in drawing the band toward the anvil, with one of these embodiments described in detail in the form of a fabricated unit. One embodiment includes a cover element that can be moved over an object after the grasping thereof, with this cover potentially serving various functions. Movement of the cover can be effected with a second linear actuator. 8 figures.

Pollard, R.E.; Robinson, S.C.; Thompson, W.F.; Couture, S.A.; Sutton, B.J.

1994-05-10T23:59:59.000Z

355

Robotic end gripper with a band member to engage object  

DOE Patents [OSTI]

An end effector for use with robotic arms and like devices that utilizes a flexible band to draw an object against an anvil having a concave surface. One typical convex surface is created by a V-block, with an apex of the V being centrally located. If an object to be grasped is fragile, the contour of the concave surface closely matches the surface of the object. Typically the movement of the band is effected by a linear actuator, with the anvil remaining fixed relative to a support base. Several embodiments are described that utilize variations in drawing the band toward the anvil, with one of these embodiments described in detail in the form of a fabricated unit. One embodiment includes a cover element that can be moved over an object after the grasping thereof, with this cover potentially serving various functions. Movement of the cover can be effected with a second linear actuator.

Pollard, Roy E. (Maryville, TN); Robinson, Samuel C. (Knoxville, TN); Thompson, William F. (Oak Ridge, TN); Couture, Scott A. (Knoxville, TN); Sutton, Bill J. (Powell, TN)

1994-01-01T23:59:59.000Z

356

Numerical method for shear bands in ductile metal with inclusions  

SciTech Connect (OSTI)

A numerical method for mesoscale simulation of high strain-rate loading of ductile metal containing inclusions is described. Because of small-scale inhomogeneities, such a composite material is prone to localized shear deformation (adiabatic shear bands). The modeling framework is the Generalized Method of Cells of Paley and Aboudi [Mech. Materials, vol. 14, pp. /27-139, 1992], which ensures that the micromechanical response of the material is reflected in the behavior of the composite at the mesoscale. To calculate the effective plastic strain rate when shear bands are present, the analytic and numerical analysis of shear bands by Glimm, Plohr, and Sharp [Mech. Materials, vol. 24, pp. 31-41, 1996] is adapted and extended.

Plohr, Jee Yeon N [Los Alamos National Laboratory; Plohr, Bradley J [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

357

Ground-Source Heat Pumps in Cold Climates  

E-Print Network [OSTI]

Ground-Source Heat Pumps in Cold Climates The Current State of the Alaska Industry, a Review-Source Heat Pumps in Cold Climates The Current State of the Alaska Industry, a Review of the Literature and contributions from individuals and organizations involved in ground-source heat pump installation around Alaska

Wagner, Diane

358

Elastic Properties of Jet-Grouted Ground and Applications  

E-Print Network [OSTI]

consists in using injection pressures of the same order of magnitude as in hydro-fracturing. The ground heave resulting from the increase of pore pressure in the cracks is expected to compensate the settlements occurring in the cracked ground. Compaction...-2-4 Compensation Grouting ................................................................................ 9 2-2-5 Compaction Grouting.................................................................................... 9 2-2-6 Permeation Grouting...

Juge, Benjamin

2012-07-16T23:59:59.000Z

359

Train-the-Trainer As ground source heat  

E-Print Network [OSTI]

Train-the-Trainer As ground source heat pumps capture more of the HVAC market, the need will also receive a copy of the Closed-Loop/ Ground- Source Heat Pump Systems Installation Guide · Soils and Rock Identification · Pump and Fluid Selection Registration information You must be an IGSHPA

360

Description of ground motion data processing codes: Volume 3  

SciTech Connect (OSTI)

Data processing codes developed to process ground motion at the Nevada Test Site for the Weapons Test Seismic Investigations Project are used today as part of the program to process ground motion records for the Nevada Nuclear Waste Storage Investigations Project. The work contained in this report documents and lists codes and verifies the ``PSRV`` code. 39 figs.

Sanders, M.L.

1988-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

Introduction Application of numerical models of ground water flow  

E-Print Network [OSTI]

(Portniaguine and Solomon 1998), and ground water temperature (Doussan et al. 1994). Compared to calibration depended on calibration methodology; models calibrated with multiple targets simulated q more accurately of Calibration Methodology on Ground Water Flow Predictions by James E. Saiers1, David P. Genereux2, and Carl H

Saiers, James

362

Fire hazards analysis for solid waste burial grounds  

SciTech Connect (OSTI)

This document comprises the fire hazards analysis for the solid waste burial grounds, including TRU trenches, low-level burial grounds, radioactive mixed waste trenches, etc. It analyzes fire potential, and fire damage potential for these facilities. Fire scenarios may be utilized in future safety analysis work, or for increasing the understanding of where hazards may exist in the present operation.

McDonald, K.M.

1995-09-28T23:59:59.000Z

363

Integrated Water Management Options in the Nebraska Ground Water Management &  

E-Print Network [OSTI]

ag chemical best management practices 7. soil testing 8. voluntary or mandatory educational programs regulate ground water development (well spacing regulations, well drilling prohibitions) and ground water by implementing the above GMA regulations, well drilling may be halted or conditioned. NRD permits are required

Nebraska-Lincoln, University of

364

Ultra high vacuum broad band high power microwave window  

DOE Patents [OSTI]

An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost.

Nguyen-Tuong, Viet (Seaford, VA); Dylla, III, Henry Frederick (Yorktown, VA)

1997-01-01T23:59:59.000Z

365

Ultra high vacuum broad band high power microwave window  

DOE Patents [OSTI]

An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost. 5 figs.

Nguyen-Tuong, V.; Dylla, H.F. III

1997-11-04T23:59:59.000Z

366

Electronic band structure of magnetic bilayer graphene superlattices  

SciTech Connect (OSTI)

Electronic band structure of the bilayer graphene superlattices with ?-function magnetic barriers and zero average magnetic flux is studied within the four-band continuum model, using the transfer matrix method. The periodic magnetic potential effects on the zero-energy touching point between the lowest conduction and the highest valence minibands of pristine bilayer graphene are exactly analyzed. Magnetic potential is shown also to generate the finite-energy touching points between higher minibands at the edges of Brillouin zone. The positions of these points and the related dispersions are determined in the case of symmetric potentials.

Pham, C. Huy; Nguyen, T. Thuong [Theoretical and Computational Physics Department, Institute of Physics, VAST, 10 Dao Tan, Ba Dinh Distr., Hanoi 10000 (Viet Nam); SISSA/International School for Advanced Study, Via Bonomea 265, I-34136 Trieste (Italy); Nguyen, V. Lien, E-mail: nvlien@iop.vast.ac.vn [Theoretical and Computational Physics Department, Institute of Physics, VAST, 10 Dao Tan, Ba Dinh Distr., Hanoi 10000 (Viet Nam); Institute for Bio-Medical Physics, 109A Pasteur, 1st Distr., Hochiminh City (Viet Nam)

2014-09-28T23:59:59.000Z

367

Energy distribution of nonequilibrium electrons and optical phonons in GaAs under band-to-band pumping by intense short pulses of light  

SciTech Connect (OSTI)

Deviation from the Fermi distribution of nonequilibrium electrons and distribution of 'hot' optical phonons in GaAs under band-to-band pumping by picosecond pulses of light are calculated.

Altybaev, G. S.; Kumekov, S. E., E-mail: skumekov@mail.ru; Mahmudov, A. A. [Satpaev Kazakh National Technical University (Kazakhstan)

2009-03-15T23:59:59.000Z

368

Status Report and Proposal Concerning the Supply of Depleted Uranium Metal Bands for a Particle Detector  

E-Print Network [OSTI]

Status Report and Proposal Concerning the Supply of Depleted Uranium Metal Bands for a Particle Detector

1980-01-01T23:59:59.000Z

369

The high-resolution G-banded karyotype of Sus scrofa domestica L  

E-Print Network [OSTI]

and 101 intermediate bands and subbands, according to their relative positions and staining intensities

Boyer, Edmond

370

Ground-source Heat Pumps Applied to Commercial Buildings  

SciTech Connect (OSTI)

Ground-source heat pumps can provide an energy-efficient, cost-effective way to heat and cool commercial facilities. While ground-source heat pumps are well established in the residential sector, their application in larger, commercial-style, facilities is lagging, in part because of a lack of experience with the technology by those in decision-making positions. Through the use of a ground-coupling system, a conventional water-source heat pump design is transformed to a unique means of utilizing thermodynamic properties of earth and groundwater for efficient operation throughout the year in most climates. In essence, the ground (or groundwater) serves as a heat source during winter operation and a heat sink for summer cooling. Many varieties in design are available, so the technology can be adapted to almost any site. Ground-source heat pump systems can be used widely in commercial-building applications and, with proper installation, offer great potential for the commercial sector, where increased efficiency and reduced heating and cooling costs are important. Ground-source heat pump systems require less refrigerant than conventional air-source heat pumps or air-conditioning systems, with the exception of direct-expansion-type ground-source heat pump systems. This chapter provides information and procedures that an energy manager can use to evaluate most ground-source heat pump applications. Ground-source heat pump operation, system types, design variations, energy savings, and other benefits are explained. Guidelines are provided for appropriate application and installation. Two case studies are presented to give the reader a sense of the actual costs and energy savings. A list of manufacturers and references for further reading are included for prospective users who have specific or highly technical questions not fully addressed in this chapter. Sample case spreadsheets are provided in Appendix A. Additional appendixes provide other information on the ground-source heat pump technology.

Parker, Steven A.; Hadley, Donald L.

2009-07-14T23:59:59.000Z

371

Document Number Q0029500 Ground Water Model 3.0 Ground Water Model  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofofOxford SiteToledo SiteTonawanda North SiteD&Dir^0 0 039Ground

372

Atomic layer deposition of photoactive CoO/SrTiO{sub 3} and CoO/TiO{sub 2} on Si(001) for visible light driven photoelectrochemical water oxidation  

SciTech Connect (OSTI)

Cobalt oxide (CoO) films are grown epitaxially on Si(001) by atomic layer deposition (ALD) using a thin (1.6 nm) buffer layer of strontium titanate (STO) grown by molecular beam epitaxy. The ALD growth of CoO films is done at low temperature (170–180 °C), using cobalt bis(diisopropylacetamidinate) and water as co-reactants. Reflection high-energy electron diffraction, X-ray diffraction, and cross-sectional scanning transmission electron microscopy are performed to characterize the crystalline structure of the films. The CoO films are found to be crystalline as-deposited even at the low growth temperature with no evidence of Co diffusion into Si. The STO-buffered Si (001) is used as a template for ALD growth of relatively thicker epitaxial STO and TiO{sub 2} films. Epitaxial and polycrystalline CoO films are then grown by ALD on the STO and TiO{sub 2} layers, respectively, creating thin-film heterostructures for photoelectrochemical testing. Both types of heterostructures, CoO/STO/Si and CoO/TiO{sub 2}/STO/Si, demonstrate water photooxidation activity under visible light illumination. In-situ X-ray photoelectron spectroscopy is used to measure the band alignment of the two heterojunctions, CoO/STO and CoO/TiO{sub 2}. The experimental band alignment is compared to electronic structure calculations using density functional theory.

Ngo, Thong Q.; Hoang, Son; McDaniel, Martin D.; Buddie Mullins, C.; Ekerdt, John G. [Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States)] [Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States); Posadas, Agham; Seo, Hosung; Demkov, Alexander A. [Department of Physics, The University of Texas at Austin, Austin, Texas 78712 (United States)] [Department of Physics, The University of Texas at Austin, Austin, Texas 78712 (United States); Utess, Dirk; Triyoso, Dina H. [GLOBALFOUNDRIES Dresden, Wilschdorfer Landstrasse 101, Dresden DE-01109 (Germany)] [GLOBALFOUNDRIES Dresden, Wilschdorfer Landstrasse 101, Dresden DE-01109 (Germany)

2013-08-28T23:59:59.000Z

373

Atlas SCT/Pixel Grounding and Shielding Note 1 ATLAS SCT/Pixel Grounding and Shielding Note  

E-Print Network [OSTI]

Atlas SCT/Pixel Grounding and Shielding Note 1 ATLAS SCT/Pixel Grounding and Shielding Note for SCT. This proposal mostly connects existing mechanical and electrical conductive #12;Atlas SCT. The barrel outer heat shield (150 µm aluminum) is the main element of the shield. #12;Atlas SCT

California at Santa Cruz, University of

374

Study of valence-band intersublevel transitions in InAs/GaAs quantum dots-in-well infrared photodetectors  

SciTech Connect (OSTI)

The n-type quantum dot (QD) and dots-in-well (DWELL) infrared photodetectors, in general, display bias-dependent multiple-band response as a result of optical transitions between different quantum levels. Here, we present a unique characteristic of the p-type hole response, a well-preserved spectral profile, due to the much reduced tunneling probability of holes compared to electrons. This feature remains in a DWELL detector, with the dominant transition contributing to the response occurring between the QD ground state and the quantum-well states. The bias-independent response will benefit applications where single-color detection is desired and also allows achieving optimum performance by optimizing the bias.

Lao, Yan-Feng; Wolde, Seyoum; Unil Perera, A. G., E-mail: uperera@gsu.edu [Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (United States); Zhang, Y. H.; Wang, T. M. [Key Laboratory of Artificial Structures and Quantum Control, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Kim, J. O.; Schuler-Sandy, Ted; Tian, Zhao-Bing; Krishna, S. S. [Center for High Technology Materials, Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106 (United States)

2014-04-28T23:59:59.000Z

375

Simultaneous confidence bands in curve prediction applied to load curves  

E-Print Network [OSTI]

Simultaneous confidence bands in curve prediction applied to load curves J.M. Aza¨is1, S. Bercu2, J, load curve. 1 Introduction In curve prediction, one is generally interested in deriving simultaneous this technique in the numerical context of load curve pre- diction: power producers like EDF, the electrical

Boyer, Edmond

376

Anisotropy of strong pinning in multi-band superconductors  

E-Print Network [OSTI]

Anisotropy of strong pinning in multi-band superconductors C.J. van der Beek, M. Konczykowski of the critical current density in iron-based superconductors is evaluated using a phenomenological approach collective pinning limit, and the strong pinning limit relevant for iron-based superconductors at low

Paris-Sud XI, Université de

377

Band structure and optical properties of isolated and bundled nanotubes  

E-Print Network [OSTI]

Band structure and optical properties of isolated and bundled nanotubes S. Reich , C. Thomsen , P of isolated and bundled single-walled nanotubes by ab initio calculations. Curvature effects on the electronic states depend on the chirality of the nanotube; the strongest deviations from the zone

Nabben, Reinhard

378

Characterizing the Weather Band Variability of the Texas Coastal Current  

E-Print Network [OSTI]

the weather band frequencies (2-15 days). Currents with longer persistence are found to be relatively slow, generally below 10 cm s^(-1). Fast currents (> 50 cm s^(-1)) tend to be short-lived, typically lasting less than 72 hours. Maximum upcoast transport...

Zimmerle, Heather

2014-07-17T23:59:59.000Z

379

Safety Analysis for Packaging Steel Banded Wooden Shipping Containers  

SciTech Connect (OSTI)

This safety analysis report for packaging describes the steel banded wooden shipping containers, which are certified as Type AF packagings. The authorized payload for these containers is unirradiated, slightly enriched, uranium ingots, billets, extrusions, and scrap materials. The amount of uranium in the containers will not exceed the LSA-II material requirements as defined in 49 CFR 173.403.

FERRELL, P.C.

2000-12-05T23:59:59.000Z

380

Bird Banding Fall 2014 The Arboretum at Penn State  

E-Print Network [OSTI]

-Central Rail Trail in Big Hollow, approximately 0.5 mile NW of the H.O. Smith Botanic Gardens. Banding is forest edge of brush growth, primarily 0 5 10 15 20 25 30 35 40 45 50 9-Sep 11-Sep 13-Sep 15-Sep 17-Sep

Boyer, Elizabeth W.

Note: This page contains sample records for the topic "ground visible band" 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

Structure and evolution of a convective band MCS  

E-Print Network [OSTI]

circulation of the Mesoscale Convective Complex apparently aided in the formation of new lines of convection behind the primary convective line of the system. This process was repeated twice in the storm life cycle and led to multiple bands of convection...

Valdes-Manzanilla, Arturo

1995-01-01T23:59:59.000Z

382

Radiation Characteristics of Tunable Graphennas in the Terahertz Band  

E-Print Network [OSTI]

, KTH Royal Institute of Technology, 16640 Kista, Sweden 5Department of Electrical Engineering in size have been predicted to radiate electromagnetic waves at the terahertz band. In this work frequencies, in the optical range. Due to the expectedly very limited power of nanosystems, the low mobility

Politècnica de Catalunya, Universitat

383

ON THE SIMULATION OF KINK BANDS IN FIBER REINFORCED COMPOSITES  

E-Print Network [OSTI]

ON THE SIMULATION OF KINK BANDS IN FIBER REINFORCED COMPOSITES Kim D. Sørensen , Lars P. Mikkelsen reinforced composites are carried out using the commercial finite element program ABAQUS. A smeared in fiber reinforced composites has been the subject of a number of recent investigations. It has been found

384

On complex perturbations of infinite band Schrodinger operators  

E-Print Network [OSTI]

We study a complex perturbation of a self-adjoint infinite band Schrodinger operator (defined in the form sense), and obtain the Lieb--Thirring type inequalities for the rate of convergence of the discrete spectrum of the perturbed operator to the joint essential spectrum of both operators.

L. Golinskii; S. Kupin

2015-02-20T23:59:59.000Z

385

Deep Intermediate-Band Surface Photometry of NGC 5907  

E-Print Network [OSTI]

We obtained very deep exposures of NGC 5907 with a Schmidt telescope, large-format CCD, and intermediate-band filters centered at 6660A and 8020A. These two filters, part of a 15-filter set, are custom-designed to avoid the brightest (and most variable) night sky lines, with the result that our images go deeper, with lower sky noise, than those taken with broad-band filters. Our errors of observation reach 1 mag/arcsec^2 at 29.00 mag/arcsec-2 in the 6660A image (= 28.7 in R-band), and 27.4 mag/arcsec^ in the 8020A image (same zero point as I-band). Fainter than R = 27 mag arcsec^, the surface brightness around NGC 5907 is strongly asymmetric, being mostly brighter the NW side of the galaxy midplane. This asymmetry rules out a halo for the origin of the faint surface brightness we see. Rather, this asymmetry is likely an artifact due to a combination of light from a faint ring around this galaxy (as described in Shang et al. 1998, ApJL 504, 23) and residual surface brightness at faint levels from stars that ou...

Zheng, Z Y; Su, H J; Burstein, D; Chen, J S

1999-01-01T23:59:59.000Z

386

Vorticity banding in rodlike virus suspensions Kyongok Kang,1  

E-Print Network [OSTI]

Vorticity banding in rodlike virus suspensions Kyongok Kang,1 M. P. Lettinga,1 Z. Dogic,2 and Jan K. G. Dhont1 1 Institute für Festkörper Forschung (IFF), Weiche Materie, Forschungszentrum Jülich, D

Fraden, Seth

387

absorption bands observed: Topics by E-print Network  

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

absorption bands observed First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 AKARI observations of ice...

388

Detection of the secondary eclipse of WASP-10b in the Ks-band  

E-Print Network [OSTI]

WASP-10b, a non-inflated hot Jupiter, was discovered around a K-dwarf in a near circular orbit ($\\sim $$0.06$). Since its discovery in 2009, different published parameters for this system have led to a discussion about the size, density, and eccentricity of this exoplanet. In order to test the hypothesis of a circular orbit for WASP-10b, we have observed its secondary eclipse in the Ks-band, where the contribution of planetary light is high enough to be detected from the ground. Observations were performed with the OMEGA2000 instrument at the 3.5-meter telescope at Calar Alto (Almer\\'ia, Spain), in staring mode during 5.4 continuous hours, with the telescope defocused, monitoring the target during the expected secondary eclipse. A relative light curve was generated and corrected from systematic effects, using the Principal Component Analysis (PCA) technique. The final light curve was fitted using a transit model to find the eclipse depth and a possible phase shift. The best model obtained from the Markov Chai...

Cruz, Patricia; Lillo-Box, Jorge; Diaz, Marcos; Birkby, Jayne; López-Morales, Mercedes; Hodgkin, Simon; Fortney, Jonathan J

2014-01-01T23:59:59.000Z

389

Fractal nature of multiple shear bands in severely deformed metallic glass  

SciTech Connect (OSTI)

We present an analysis of fractal geometry of extensive and complex shear band patterns in a severely deformed metallic glass. We show that the shear band patterns have fractal characteristics, and the fractal dimensions are determined by the stress noise induced by the interaction between shear bands. A theoretical model of the spatial evolution of multiple shear bands is proposed in which the collective shear bands slide is considered as a stochastic process far from thermodynamic equilibrium.

Sun, B. A.; Wang, W. H. [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2011-05-16T23:59:59.000Z

390

Enhancement of the visibility of objects located below the surface of a scattering medium  

DOE Patents [OSTI]

Techniques are provided for enhancing the visibility of objects located below the surface of a scattering medium such as tissue, water and smoke. Examples of such an object include a vein located below the skin, a mine located below the surface of the sea and a human in a location covered by smoke. The enhancement of the image contrast of a subsurface structure is based on the utilization of structured illumination. In the specific application of this invention to image the veins in the arm or other part of the body, the issue of how to control the intensity of the image of a metal object (such as a needle) that must be inserted into the vein is also addressed.

Demos, Stavros

2013-11-19T23:59:59.000Z

391

Response of a SiC Photodiode to Extreme Ultraviolet through Visible Radiation  

SciTech Connect (OSTI)

The responsivity of a type 6H-SiC photodiode in the 1.5-400 nm wavelength range was measured using synchrotron radiation. The responsivity was 0.20 A/W at 270 nm and was less than 0.10 A/W in the extreme ultraviolet (EUV) region. The responsivity was calculated using a proven optical model that accounted for the reflection and absorption of the incident radiation and the variation of the charge collection efficiency (CCE) with depth into the device. The CCE was determined from the responsivity measured in the 200-400 nm wavelength range. By use of this CCE and the effective pair creation energy (7.2 eV) determined from x-ray absorption measurements, the EUV responsivity was accurately modeled with no free parameters. The measured visible-light sensitivity, although low compared with that of a silicon photodiode, was surprisingly high for this wide bandgap semiconductor.

Seely,J.; Kjornrattanawanich, B.; Holland, G.; Korde, R.

2005-01-01T23:59:59.000Z

392

Bright and fast voltage reporters across the visible spectrum via electrochromic FRET (eFRET)  

E-Print Network [OSTI]

We present a palette of brightly fluorescent genetically encoded voltage indicators (GEVIs) with excitation and emission peaks spanning the visible spectrum, sensitivities from 6 - 10% Delta F/F per 100 mV, and half-maximal response times from 1 - 7 ms. A fluorescent protein is fused to an Archaerhodopsin-derived voltage sensor. Voltage-induced shifts in the absorption spectrum of the rhodopsin lead to voltage-dependent nonradiative quenching of the appended fluorescent protein. Through a library screen, we identified linkers and fluorescent protein combinations which reported neuronal action potentials in cultured rat hippocampal neurons with a single-trial signal-to-noise ratio from 6.6 to 11.6 in a 1 kHz imaging bandwidth at modest illumination intensity. The freedom to choose a voltage indicator from an array of colors facilitates multicolor voltage imaging, as well as combination with other optical reporters and optogenetic actuators.

Zou, Peng; Douglass, Adam D; Hochbaum, Daniel R; Brinks, Daan; Werley, Christopher A; Harrison, D Jed; Campbell, Robert E; Cohen, Adam E

2014-01-01T23:59:59.000Z

393

Visible Photoluminescence from Cubic (3C) Silicon Carbide Microdisks Coupled to High Quality Whispering Gallery Modes  

E-Print Network [OSTI]

We present the design, fabrication and characterization of cubic (3C) silicon carbide microdisk resonators with high quality factor modes at visible and near infrared wavelengths (600 - 950 nm). Whispering gallery modes with quality factors as high as 2,300 and corresponding mode volumes V ~ 2 ({\\lambda}/n)^3 are measured using laser scanning confocal microscopy at room temperature. We obtain excellent correspondence between transverse-magnetic (TM) and transverse-electric (TE) polarized resonances simulated using Finite Difference Time Domain (FDTD) method and those observed in experiment. These structures based on ensembles of optically active impurities in 3C-SiC resonators could play an important role in diverse applications of nonlinear and quantum photonics, including low power optical switching and quantum memories.

Radulaski, Marina; Müller, Kai; Lagoudakis, Konstantinos G; Zhang, Jingyuan Linda; Buckley, Sonia; Kelaita, Yousif A; Alassaad, Kassem; Ferro, Gabriel; Vu?kovi?, Jelena

2014-01-01T23:59:59.000Z

394

Visible Photoluminescence from Cubic (3C) Silicon Carbide Microdisks Coupled to High Quality Whispering Gallery Modes  

E-Print Network [OSTI]

We present the design, fabrication and characterization of cubic (3C) silicon carbide microdisk resonators with high quality factor modes at visible and near infrared wavelengths (600 - 950 nm). Whispering gallery modes with quality factors as high as 2,300 and corresponding mode volumes V ~ 2 ({\\lambda}/n)^3 are measured using laser scanning confocal microscopy at room temperature. We obtain excellent correspondence between transverse-magnetic (TM) and transverse-electric (TE) polarized resonances simulated using Finite Difference Time Domain (FDTD) method and those observed in experiment. These structures based on ensembles of optically active impurities in 3C-SiC resonators could play an important role in diverse applications of nonlinear and quantum photonics, including low power optical switching and quantum memories.

Marina Radulaski; Thomas M. Babinec; Kai Müller; Konstantinos G. Lagoudakis; Jingyuan Linda Zhang; Sonia Buckley; Yousif A. Kelaita; Kassem Alassaad; Gabriel Ferro; Jelena Vu?kovi?

2014-12-08T23:59:59.000Z

395

A holographic bound on the total number of computations in the visible Universe  

E-Print Network [OSTI]

Information and encoding are central to holographic imaging of matter and fields within a two-surface. We consider the probability of detection of particles inside star-like holographic screens defined by their propagators. Imaging a point particle of mass m hereby requires I = 2 pi mr in log2 bits on a spherical screen or radius r. Encoding the three hairs of mass, charge, angular momentum and radiation requires a minimum of four bits. This formulation leads directly to Reissner-Nordstrom black holes and extremal Kerr black holes for minimal screens, that envelope event horizons. Applied to the cosmological event horizon, the total number of computations in the visible Universe is found to be bounded by 10e121.

Maurice H. P. M. van Putten

2014-08-12T23:59:59.000Z

396

Solvothermal synthesis of designed nonstoichiometric strontium titanate for efficient visible-light photocatalysis  

SciTech Connect (OSTI)

SrTiO{sub 3} powders with various Sr/Ti atomic ratios were synthesized by microwave-assisted solvothermal reactions of SrCl{sub 2} and Ti(OC{sub 3}H{sub 7}){sub 4} in KOH aqueous solutions. The nanoparticles of perovskite type SrTiO{sub 3} structure with the particle size of 30-40 nm were synthesized. The photocatalytic activity was determined by deNO{sub x} ability using light emitting diode lamps of various wavelengths such as 627 nm (red), 530 nm (green), 445 nm (blue), and 390 nm (UV). The photocatalytic activity significantly changed depending on the Sr/Ti atomic ratio, i.e., the strontium rich sample (Sr/Ti atomic ratio>1) showed excellent visible light responsive photocatalytic activity for the oxidative destruction of NO.

Sulaeman, Uyi; Yin, Shu; Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)

2010-09-06T23:59:59.000Z

397

Broadband visible light source based on AllnGaN light emitting diodes  

DOE Patents [OSTI]

A visible light source device is described based on a light emitting diode and a nanocluster-based film. The light emitting diode utilizes a semiconductor quantum well structure between n-type and p-type semiconductor materials on the top surface a substrate such as sapphire. The nanocluster-based film is deposited on the bottom surface of the substrate and can be derived from a solution of MoS.sub.2, MoSe.sub.2, WS.sub.2, and WSe.sub.2 particles of size greater than approximately 2 nm in diameter and less than approximately 15 nm in diameter, having an absorption wavelength greater than approximately 300 nm and less than approximately 650 nm.

Crawford, Mary H.; Nelson, Jeffrey S.

2003-12-16T23:59:59.000Z

398

Hanford Site ground-water monitoring for 1994  

SciTech Connect (OSTI)

This report presents the results of the Ground-Water Surveillance Project monitoring for calendar year 1994 on the Hanford Site, Washington. Hanford Site operations from 1943 onward produced large quantities of radiologic and chemical waste that have impacted ground-water quality on the Site. Monitoring of water levels and ground-water chemistry is performed to track the extent of contamination and trends in contaminant concentrations. The 1994 monitoring was also designed to identify emerging ground-water quality problems. The information obtained is used to verify compliance with applicable environmental regulations and to evaluate remedial actions. Data from other monitoring and characterization programs were incorporated to provide an integrated assessment of Site ground-water quality. Additional characterization of the Site`s geologic setting and hydrology was performed to support the interpretation of contaminant distributions. Numerical modeling of sitewide ground-water flow also supported the overall project goals. Water-level monitoring was performed to evaluate ground-water flow directions, to track changes in water levels, and to relate such changes to changes in site disposal practices. Water levels over most of the Hanford Site continued to decline between June 1993 and June 1994. These declines are part of the continued response to the cessation of discharge to U Pond and other disposal facilities. The low permeability in this area which enhanced mounding of waste-water discharge has also slowed the response to the reduction of disposal.

Dresel, P.E.; Thorne, P.D.; Luttrell, S.P. [and others

1995-08-01T23:59:59.000Z

399

Ground-water contribution to dose from past Hanford Operations  

SciTech Connect (OSTI)

The Hanford Environmental Dose Reconstruction (HEDR) Project is being conducted to estimate radiation doses that populations and individuals could have received from Hanford Site operations from 1944 to the present. Four possible pathways by which radionuclides migrating in ground water on the Hanford Site could have reached the public have been identified: (1) through contaminated ground water migrating to the Columbia River; (2) through wells on or adjacent to the Hanford Site; (3) through wells next to the Columbia River downstream of Hanford that draw some or all of their water from the river (riparian wells); and (4) through atmospheric deposition resulting in contamination of a small watershed that, in turn, results in contamination of a shallow well or spring by transport in the ground water. These four pathways make up the ground-water pathway,'' which is the subject of this study. Assessment of the ground-water pathway was performed by (1) reviewing the existing extensive literature on ground water and ground-water monitoring at Hanford and (2) performing calculations to estimate radionuclide concentrations where no monitoring data were collected. Radiation doses that would result from exposure to these radionuclides were calculated.

Freshley, M.D.; Thorne, P.D.

1992-08-01T23:59:59.000Z

400

MWCNT/WO{sub 3} nanocomposite photoanode for visible light induced water splitting  

SciTech Connect (OSTI)

The Multi-walled carbon nanotube (MWCNT)/WO{sub 3} nanocomposite thin films with different MWCNT’s weight percentages were prepared by sol–gel method as visible light induced photoanode in water splitting reaction. Weight percentage of MWCNT in the all nanocomposite thin films was confirmed by TGA/DSC analysis. According to XPS analysis, oxygenated groups at the surface of the MWCNT and stoichiometric formation of WO{sub 3} thin films were determined, while the crystalline structure of the nanocomposite samples was studied by XRD indicating (0 0 2) peak of MWCNT in the monoclinic phase of WO{sub 3}. The influence of different weight percentage (wt%) of MWCNT on WO{sub 3} photoactivity showed that the electron conductivity, charge transfer and electron life time had improved as compared with the pure WO{sub 3}. Based on linear sweep voltammetry and chronoamperometry measurements, the (1 wt%) MWCNT/WO{sub 3} nanocomposite thin films photoanode has a maximum photocurrent density of ?4.5 A/m{sup 2} and electron life time of about 57 s. - Graphical abstract: Photocurrent density versus time at constant potential (0.7 V) for the WO{sub 3} films containing different MWCNT weight percentages annealed at 400 °C under 1000 Wm{sup ?2} visible photo-illumination. Display Omitted - Highlights: • MWCNT/ WO{sub 3} nanocomposite thin films were synthesized using sol–gel derived method. • TGA/DSC confirmed the weight percentage of MWCNT in the all nanocomposite thin films. • XPS analysis revealed that WO{sub 3} was attached on the oxygenated group of MWCNT surface. • The Highest Photoelectrochemical activity is achieved for (1 wt%)MWCNT/WO{sub 3} thin film.

Yousefzadeh, Samira [Physics Department, Sharif University of Technology, P.O. Box 11155-9161, Tehran (Iran, Islamic Republic of); Reyhani, Ali [Physics Department, Faculty of Science, Imam Khomeini International University, P.O. Box 34149-16818, Qazvin (Iran, Islamic Republic of); Naseri, Naimeh [Physics Department, Sharif University of Technology, P.O. Box 11155-9161, Tehran (Iran, Islamic Republic of); Moshfegh, Alireza Z., E-mail: moshfegh@sharif.edu [Physics Department, Sharif University of Technology, P.O. Box 11155-9161, Tehran (Iran, Islamic Republic of); Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588-89694, Tehran (Iran, Islamic Republic of)

2013-08-15T23:59:59.000Z

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


401

A new list of thorium and argon spectral lines in the visible  

E-Print Network [OSTI]

Aims. We present a new list of thorium and argon emission lines in the visible obtained by analyzing high-resolution (R=110,000) spectra of a ThAr hollow cathode lamp. The aim of this new line list is to allow significant improvements in the quality of wavelength calibration for medium- to high-resolution astronomical spectrographs. Methods. We use a series of ThAr lamp exposures obtained with the HARPS instrument (High Accuracy Radial-velocity Planet Searcher) to detect previously unknown lines, perform a systematic search for blended lines and correct individual wavelengths by determining the systematic offset of each line relative to the average wavelength solution. Results. We give updated wavelengths for more than 8400 lines over the spectral range 3785-6915 A. The typical internal uncertainty on the line positions is estimated to be ~10 m/s (3.3 parts in 10^8 or 0.18 mA), which is a factor of 2-10 better than the widely used Los Alamos Atlas of the Thorium Spectrum (Palmer & Engleman 1983). The absolute accuracy of the global wavelength scale is the same as in the Los Alamos Atlas. Using this new line list on HARPS ThAr spectra, we are able to obtain a global wavelength calibration which is precise at the 20 cm/s level (6.7 parts in 10^10 or 0.0037 mA). Conclusions. Several research fields in astronomy requiring high-precision wavelength calibration in the visible (e.g. radial velocity planet searches, variability of fundamental constants) should benefit from using the new line list.

C. Lovis; F. Pepe

2007-03-15T23:59:59.000Z

402

Collision-induced infrared spectra of H2-He pairs at temperatures from 18 to 7000 K. II. Overtone and hot bands  

SciTech Connect (OSTI)

The three lowest spectral moments of the collision induced absorption (CIA) spectra of H2-He pairs have been computed from first principles for temperatures T from 18 to 7000 K for a number of hydrogen overtone and hot bands involving vibrational quantum numbers nu = 0, 1, 2, 3 yields nu-prime = 0, 1, 2, 3. The data are given in a form suitable for the computation of CIA spectra of H2-He as function of frequency and temperature, using simple computer codes and model line shapes. The work is of interest for the spectroscopy of the atmospheres of the outer planets and of stars that contain neutral molecular hydrogen and helium (late stars, white dwarfs, and Population II stars) in the infrared and visible region of the spectrum. 13 refs.

Borysow, A.; Frommhold, L. (Joint Institute for Laboratory Astrophysics, Boulder, CO (USA); Texas Univ., Austin (USA))

1989-06-01T23:59:59.000Z

403

Development and Quantification of UV-Visible and Laser Spectroscopic Techniques for Materials Accountability and Process Control  

SciTech Connect (OSTI)

Ultraviolet-Visible Spectroscopy (UV-Visible) and Time Resolved Laser Fluorescence Spectroscopy (TRLFS) optical techniques can permit on-line, real-time analysis of the actinide elements in a solvent extraction process. UV-Visible and TRLFS techniques have been used for measuring the speciation and concentration of the actinides under laboratory conditions. These methods are easily adaptable to multiple sampling geometries, such as dip probes, fiber-optic sample cells, and flow-through cell geometries. To fully exploit these techniques for GNEP applications, the fundamental speciation of the target actinides and the resulting influence on 3 spectroscopic properties must be determined. Through this effort detection limits, process conditions, and speciation of key actinide components can be establish and utilized in a range of areas of interest to GNEP, especially in areas related to materials accountability and process control.

Ken Czerwinski; Phil Weck; Frederic Poineau

2010-12-29T23:59:59.000Z

404

GROUND-WATER CONTRIBUTION TO DOSE FROM PAST HANFORD OPERATIONS  

SciTech Connect (OSTI)

The Hanford Environmental Dose Reconstruction (HEOR) Project is being conducted to estimate radiation doses that populations and individuals could have received from Hanford Site operations from 1944 to the present. Four possible pathways by which radionuclides originating in ground water on the Hanford Site could have reached the public have been identified: 1) through contaminated ground water migrating to the Columbia River; 2) through wells on or adjacent to the Hanford Site; 3) through wells that draw some or all of their water from the Columbia River (riparian wells); and 4) through atmospheric deposition resulting in the contamination of a small watershed that, in turn, results in contamination of a shallow well or spring. These four pathways make up the "ground-water pathway ," which is the subject of this study. The objective of the study was to assess the extent to which the groundwater pathway contributed to radiation doses that populations or individuals may have received from past operations at Hanford. The assessment presented in this report was performed by 1) reviewing the extensive ?literature on ground water and ground-water monitoring at Hanford and 2) performing simple calculations to estimate radionuclide concentrations in ground water and the Columbia River resulting from ground-water discharge. Radiation doses that would result from exposure to this ground water and surface water were calculated. The study conclusion is that the ground-water pathways did not contribute significantly to dose. Compared with background radiation in the TriCities {300 mrem/yr), estimated doses are small: 0.02 mrem/yr effective dose equivalent from discharge of contaminated ground water to the Columbia River; 1 mrem/yr effective dose equivalent from Hanford Site wells; 11 mrem/yr effective dose equivalent from riparian wells; and 1 mrem/yr effective dose equivalent from the watershed. Because the estimated doses are so small, the recommendation is that further work on the ground-water pathway be limited to tracking ongoing ground-water studies at the Hanford Site.

Freshley, M. D.; Thorne, P. D.

1992-01-01T23:59:59.000Z

405

Quasiparticle band structure and density-functional theory: Single-particle excitations and band gaps in lattice models  

E-Print Network [OSTI]

ARTICLES Quasiparticle band structure and density-functional theory: Single-particle excitations-particle eigenvalues. Without rigorous basis even for the exact density-functional theory , these are often taken, eigenvalues obtained from density-functional theory DFT , and those from a corresponding LDA. Notable among

Hess, Daryl W.

406

Near-resonance enhanced O2 detection for dual-broadband pure rotational coherent anti-Stokes Raman scattering with an ultraviolet-visible setup at 266 nm  

SciTech Connect (OSTI)

Broadband and dual-broadband coherent anti-Stokes Raman scattering (CARS) are widely established tools for nonintrusive gas diagnostics. Up to now the investigations have been mainly performed for electronic nonresonant conditions of the gas species of interest. We report on the enhancement of the O2-N2 detection limit of dual-broadband pure rotational CARS by shifting the wavelength of the narrowband pump laser from the commonly used 532-266 nm. This enhancement is caused when the Schumann-Runge absorption band is approached near 176 nm. The principal concept of this experiment, i.e., covering the Raman resonance with a single- or dual-broadband combination of lasers in the visible range and moving only the narrowband probe laser near or directly into electronic resonant conditions in the UV range, should also be applicable to broadband CARS experiments to directly exploit electronic resonance effects for the purpose of single-shot concentration measurements of minority species. To quantify the enhancement in O2 sensitivity, comparative measurements at both a 266 and a 532 nm narrowband pump laser wavelength are presented, employing a 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyram (DCM) dye laser as a broadband laser source at 635 nm. An increase of approximately 13% in the ratio of the rotational CARS cross sections of O2 and N2 was obtained. The broad spectral width of the CARS excitation profile was approximately equal for both setups. Further enhancement should be achievable by shifting the narrowband pump laser closer toward 176 nm, for example, with a frequency-doubled optical parametric oscillator or an excimer laser. The principal concept of this experiment should also be applicable to broadband CARS experiments to directly exploit electronic resonance effects of the narrowband pump laser with electronic transitions of minority species for the purpose of single-shot concentration measurements of those species.

Schenk, Martin; Seeger, Thomas; Leipertz, Alfred

2005-07-01T23:59:59.000Z

407

Observation of high-spin oblate band structures in {sup 141}Pm  

SciTech Connect (OSTI)

The high-spin states of {sup 141}Pm have been investigated through the reaction {sup 126}Te({sup 19}F,4n) at a beam energy of 90 MeV. A previous level scheme has been updated with spins up to 49/2({h_bar}/2{pi}). Six collective bands at high spins are newly observed. Based on the systematic comparison, one band is proposed as a decoupled band; two bands with strong {Delta}I=1 M1 transitions inside the bands are suggested as the oblate bands with {gamma} {approx}-60 deg.; three other bands with large signature splitting have been proposed with the oblate-triaxial deformation with {gamma}{approx} -90 deg. The triaxial n-particle-n-hole particle rotor model calculations for one of the oblate bands in {sup 141}Pm are in good agreement with the experimental data. The other characteristics for these bands have been discussed.

Gu, L.; Zhu, S. J.; Wang, J. G.; Yeoh, E. Y.; Xiao, Z. G.; Zhang, M.; Liu, Y.; Ding, H. B.; Xu, Q. [Department of Physics, Tsinghua University, Beijing 100084 (China); Zhang, S. Q.; Meng, J. [Department of Technical Physics, Peking University, Beijing 100871 (China); Zhu, L. H.; Wu, X. G.; He, C. Y.; Li, G. S.; Wang, L. L.; Zheng, Y.; Zhang, B. [China Institute of Atomic Energy, Beijing 102413 (China)

2011-06-15T23:59:59.000Z

408

Combined permeable pavement and ground source heat pump systems   

E-Print Network [OSTI]

The PhD thesis focuses on the performance assessment of permeable pavement systems incorporating ground source heat pumps (GSHP). The relatively high variability of temperature in these systems allows for the survival of pathogenic organisms within...

Grabowiecki, Piotr

2010-01-01T23:59:59.000Z

409

Optimal Design for a Hybrid Ground-Source Heat Pump  

E-Print Network [OSTI]

Although the advantages of ground-source heat pumps over their conventional alternatives make these systems a very attractive choice for air conditioning, not only for residential buildings but increasingly also for institutional and commercial...

Yu, Z.; Yuan, X.; Wang, B.

2006-01-01T23:59:59.000Z

410

Apparatus and method for grounding compressed fuel fueling operator  

DOE Patents [OSTI]

A safety system for grounding an operator at a fueling station prior to removing a fuel fill nozzle from a fuel tank upon completion of a fuel filling operation is provided which includes a fuel tank port in communication with the fuel tank for receiving and retaining the nozzle during the fuel filling operation and a grounding device adjacent to the fuel tank port which includes a grounding switch having a contact member that receives physical contact by the operator and where physical contact of the contact member activates the grounding switch. A releasable interlock is included that provides a lock position wherein the nozzle is locked into the port upon insertion of the nozzle into the port and a release position wherein the nozzle is releasable from the port upon completion of the fuel filling operation and after physical contact of the contact member is accomplished.

Cohen, Joseph Perry (Bethlehem, PA); Farese, David John (Riegelsville, PA); Xu, Jianguo (Wrightstown, PA)

2002-06-11T23:59:59.000Z

411

Acoustic and Seismic Modalities for Unattended Ground Sensors  

SciTech Connect (OSTI)

In this paper, we have presented the relative advantages and complementary aspects of acoustic and seismic ground sensors. A detailed description of both acoustic and seismic ground sensing methods has been provided. Acoustic and seismic phenomenology including source mechanisms, propagation paths, attenuation, and sensing have been discussed in detail. The effects of seismo-acoustic and acousto-seismic interactions as well as recommendations for minimizing seismic/acoustic cross talk have been highlighted. We have shown representative acoustic and seismic ground sensor data to illustrate the advantages and complementary aspects of the two modalities. The data illustrate that seismic transducers often respond to acoustic excitation through acousto-seismic coupling. Based on these results, we discussed the implications of this phenomenology on the detection, identification, and localization objectives of unattended ground sensors. We have concluded with a methodology for selecting the preferred modality (acoustic and/or seismic) for a particular application.

Elbring, G.J.; Ladd, M.D.; McDonald, T.S.; Sleefe, G.E.

1999-03-31T23:59:59.000Z

412

Effect of anisotropy in ground movements caused by tunnelling  

E-Print Network [OSTI]

This paper presents closed-form analytical solutions for estimating far-field ground deformations caused by shallow tunnelling in a linear elastic soil mass with cross-anisotropic stiffness properties. The solutions describe ...

Zymnis, Despina Maria

413

Ground Versus Unground Grain for Lactating Dairy Cows.  

E-Print Network [OSTI]

. Table 10. Effects of Feeding Ground versus Whole Grain on High versus Low Producing Cows. Productive Values of Whole Grains Experiment Numbers Corn Experiment No. 1.. .... .... Corn Experiment No. 2.. ..... Oat Experiment No. 1.. Oat Experiment hTo...

Darnell, A. L. (Albert Laurie); Copeland, O. C. (Orlin Cephas)

1936-01-01T23:59:59.000Z

414

Slotted Ground Structures and Their Applications to Various Microwave Components  

E-Print Network [OSTI]

(LPF) using slotted ground structure (SGS) with dumbbell shape is designed and measured to validate its theories. By using SGS techniques presented in this thesis, some other RF/microwave components such as a periodic structure, ultra-wideband bandpass...

Jung, Dong

2010-01-16T23:59:59.000Z

415

Improvable upper bounds to the piezoelectric polaron ground state energy  

E-Print Network [OSTI]

It was shown that an infinite sequence of improving non-increasing upper bounds to the ground state energy (GSE) of a slow-moving piezoeletric polaron can be devised.

A. V. Soldatov

2014-12-31T23:59:59.000Z

416

EPA Final Ground Water Rule Available Online, 3/07  

Broader source: Energy.gov [DOE]

On November 8, 2006, the U.S. Environmental Protection Agency (EPA) published a final Ground Water Rule (GWR) to promote increased protection against microbial pathogens that may be present in...

417

Mk12A/W78 ground test project (u)  

SciTech Connect (OSTI)

The slides present the scope, objectives and status of the Mk12A1W78 Ground Test Project for the purpose of updating the ICBM Project Officers Group. In addition, project constraints and risks are discussed.

Stokes, Kyle R [Los Alamos National Laboratory

2010-12-01T23:59:59.000Z

418

area burial ground: Topics by E-print Network  

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

of Medicine Campus Yoshida-South Campus (Clock Tower Takada, Shoji 83 AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL University of California eScholarship Repository...

419

area burial grounds: Topics by E-print Network  

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

of Medicine Campus Yoshida-South Campus (Clock Tower Takada, Shoji 83 AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL University of California eScholarship Repository...

420

Ground facilities for a VTOL intercity air transportation system  

E-Print Network [OSTI]

Introduction: This study covers the design of ground facilities, or metroports, for a future form of short haul intercity air transportation, the VTOL Airbus system as described by previous M.I.T. Flight Transportation ...

Allen Edward

1970-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

411 / 2011 / 01 fp Grounds RFP v6  

E-Print Network [OSTI]

OF THE UNIVERSITY'S GROUNDS AND OUTDOOR SPORTS FACILITIES MAINTENANCE AND RELATED ANCILLARY AND COMPLEMENTARY....................................................................................... 5 2.4. MAINTENANCE CONTRACT one or more suitably qualified and experienced landscape and turf grass contractors to manage

422

Dispersion modeling of ground-level area sources of particulate  

E-Print Network [OSTI]

into the concentration predictions, in order to account for variation or wind speed and direction within an hour period. For ground-level sources, the vertical distribution involves mathematically dispersing the pollutant underground, then reflecting it back up. The next...

Fritz, Bradley Keith

2012-06-07T23:59:59.000Z

423

Control and waypoint navigation of an autonomous ground vehicle  

E-Print Network [OSTI]

This thesis describes the initial development of the Texas A&M Autonomous Ground Vehicle test platform and waypoint following software, including the associated controller design. The original goal of the team responsible for the development...

Massey, James Patrick

2006-08-16T23:59:59.000Z

424

Ground states of lattice gases with ``almost'' convex repulsive interactions  

E-Print Network [OSTI]

the feature known as the complete devil's staircase. KEY WORDS: Classical lattice­gas models; ground states; nonconvex interactions; most homogeneous configurations; devil's staircase. \\Lambda Pl. Maksa Borna 9, 50

425

Effect of existing building on tunneling-induced ground movements  

E-Print Network [OSTI]

The goal of this thesis is to assess the influence of an existing structure on tunneling-induced ground movements. This is accomplished through 2D numerical simulations that are compared with similar prior studies reported ...

Law, Rachel Hoi-chee

2012-01-01T23:59:59.000Z

426

Renewable Energy Opportunties at Dugway Proving Ground, Utah  

SciTech Connect (OSTI)

This document provides an overview of renewable resource potential at Dugway Proving Ground, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and ground source heat pumps (GSHPs). The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment.

Orrell, Alice C.; Kora, Angela R.; Russo, Bryan J.; Horner, Jacob A.; Williamson, Jennifer L.; Weimar, Mark R.; Gorrissen, Willy J.; Nesse, Ronald J.; Dixon, Douglas R.

2010-05-31T23:59:59.000Z

427

Ground state hyperfine structure in muonic lithium ions  

E-Print Network [OSTI]

On the basis of perturbation theory in fine structure constant alpha and the ratio of electron to muon masses we calculate one-loop vacuum polarization, electron vertex corrections, nuclear structure and recoil corrections to hyperfine splitting of the ground state in muonic lithium ions $(\\mu\\ e\\ ^6_3Li)^+$ and $(\\mu\\ e\\ ^7_3Li)^+$. We obtain total results for the ground state small hyperfine splittings in $(\\mu\\ e\\ ^6_3Li)^+$ $\\Delta\

A. P. Martynenko; A. A. Ulybin

2014-11-21T23:59:59.000Z

428

Ground state energy fluctuations in the Nuclear Shell Model  

E-Print Network [OSTI]

Statistical fluctuations of the nuclear ground state energies are estimated using shell model calculations in which particles in the valence shells interact through well defined forces, and are coupled to an upper shell governed by random 2-body interactions. Induced ground-state energy fluctuations are found to be one order of magnitude smaller than those previously associated with chaotic components, in close agreement with independent perturbative estimates based on the spreading widths of excited states.

Victor Velazquez; Jorge G. Hirsch; Alejandro Frank; Jose Barea; Andres P. Zuker

2005-03-29T23:59:59.000Z

429

Chiral Ground States in a Frustrated Holographic Superconductor  

E-Print Network [OSTI]

Frustration is an important phenomenon in condensed matter physics because it can introduce a new order parameter such as chirality. Towards understanding a mechanism of the frustration in strongly correlated systems, we study a holographic superconductor model with three scalar fields and an interband Josephson coupling, which is important for the frustration. We analyze free energy of solutions of the model to determine ground states. We find chiral ground states, which have nonzero chirality.

Nishida, Mitsuhiro

2015-01-01T23:59:59.000Z

430

Chiral Ground States in a Frustrated Holographic Superconductor  

E-Print Network [OSTI]

Frustration is an important phenomenon in condensed matter physics because it can introduce a new order parameter such as chirality. Towards understanding a mechanism of the frustration in strongly correlated systems, we study a holographic superconductor model with three scalar fields and an interband Josephson coupling, which is important for the frustration. We analyze free energy of solutions of the model to determine ground states. We find chiral ground states, which have nonzero chirality.

Mitsuhiro Nishida

2015-02-28T23:59:59.000Z

431

Ground Source Heat Pump Subprogram Overview | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Source Heat Pump Subprogram Overview Ground Source

432

Majorana Flat Bands in s-Wave Gapless Topological Superconductors  

E-Print Network [OSTI]

We demonstrate how the non-trivial interplay between spin-orbit coupling and nodeless $s$-wave superconductivity can drive a fully gapped two-band topological insulator into a time-reversal invariant gapless topological superconductor supporting symmetry-protected Majorana flat bands. We characterize topological phase diagrams by a ${\\mathbb Z}_2 \\times{\\mathbb Z}_2$ partial Berry-phase invariant, and show that, despite the trivial crystal geometry, no unique bulk-boundary correspondence exists. We trace this behavior to the anisotropic quasiparticle bulk gap closing, linear vs. quadratic, and argue that this provides a unifying principle for gapless topological superconductivity. Experimental implications for tunneling conductance measurements are addressed, relevant for lead chalcogenide materials.

Shusa Deng; Gerardo Ortiz; Amrit Poudel; Lorenza Viola

2014-04-28T23:59:59.000Z

433

Chiral CP^2 skyrmions in three-band superconductors  

E-Print Network [OSTI]

It is shown that under certain conditions, three-component superconductors (and in particular three-band systems) allow stable topological defects different from vortices. We demonstrate the existence of these excitations, characterized by a $CP^2$ topological invariant, in models for three-component superconductors with broken time reversal symmetry. We term these topological defects "chiral $GL^{(3)}$ skyrmions", where "chiral" refers to the fact that due to broken time reversal symmetry, these defects come in inequivalent left- and right-handed versions. In certain cases these objects are energetically cheaper than vortices and should be induced by an applied magnetic field. In other situations these skyrmions are metastable states, which can be produced by a quench. Observation of these defects can signal broken time reversal symmetry in three-band superconductors or in Josephson-coupled bilayers of $s_\\pm$ and s-wave superconductors.

Julien Garaud; Johan Carlstrom; Egor Babaev; Martin Speight

2013-01-14T23:59:59.000Z

434

An Aharonov-Bohm interferometer for determining Bloch band topology  

E-Print Network [OSTI]

The geometric structure of an energy band in a solid is fundamental for a wide range of many-body phenomena in condensed matter and is uniquely characterized by the distribution of Berry curvature over the Brillouin zone. In analogy to an Aharonov-Bohm interferometer that measures the magnetic flux penetrating a given area in real space, we realize an atomic interferometer to measure Berry flux in momentum space. We demonstrate the interferometer for a graphene-type hexagonal lattice, where it has allowed us to directly detect the singular $\\pi$ Berry flux localized at each Dirac point. We show that the interferometer enables one to determine the distribution of Berry curvature with high momentum resolution. Our work forms the basis for a general framework to fully characterize topological band structures and can also facilitate holonomic quantum computing through controlled exploitation of the geometry of Hilbert space.

Lucia Duca; Tracy Li; Martin Reitter; Immanuel Bloch; Monika Schleier-Smith; Ulrich Schneider

2014-07-21T23:59:59.000Z

435

High peak power test of S-band waveguide switches  

SciTech Connect (OSTI)

The injector and source of particles for the Advanced Photon Source (APS) is a 2856-MHz S-band electron-positron linear accelerator (linac) which produces electrons with energies up to 650 MeV or positrons with energies up to 450 MeV. To improve the linac rf system availability, an additional modulator-klystron subsystem is being constructed to provide a switchable hot spare unit for each of the five existing S-band transmitters. The switching of the transmitters will require the use of SF6-pressurized waveguide switches at a peak operating power of 35 MW. A test stand was set up at the Stanford Linear Accelerator Center (SLAC) Klystron-Microwave laboratory to conduct tests characterizing the power handling capability of these waveguide switches. Test results are presented.

Nassiri, A.; Grelick, A.; Kustom, R.L.; White, M.

1997-08-01T23:59:59.000Z

436

The Broad Band Spectral Energy Distributions of SDSS Blazars  

E-Print Network [OSTI]

We compiled the radio, optical, and X-ray data of blazars from the Sloan Digital Sky Survey (SDSS) database, and presented the distribution of luminosities and broad band spectral indices. The distribution of luminosities shows that the averaged luminosity of flat-spectral radio quasars (FSRQs) is larger than that of BL Lacs objects. On the other hand, the broad band spectral energy distribution reveals that FSRQs and low energy peaked BL Lac objects (LBLs) objects have similar spectral properties, but high energy peaked BL Lac objects (HBLs) have a distinct spectral property. This may be due to that different subclasses of blazars have different intrinsic environments and are at different cooling levels. Even so, a unified scheme also is revealed from the color-color diagram, which hints that there are similar physical processes operating in all objects under a range of intrinsic physical conditions or beaming parameter.

Li, Huaizhen; Jiang, Yunguo; Yi, Tingfeng

2015-01-01T23:59:59.000Z

437

Intermediate-band Photometry of Type Ia Supernovae  

E-Print Network [OSTI]

We present optical light curves of five Type Ia supernovae (2002er, 2002fk, 2003cg, 2003du, 2003fk). The photometric observations were performed in a set of intermediate-band filters. SNe 2002er, 2003du appear to be normal SN Ia events with similar light curve shapes, while SN 2003kf shows the behavior of a brighter SN Ia with slower decline rate after maximum. The light curves of SN 2003cg is unusual; they show a fast rise and dramatic decline near maximum and do not display secondary peak at longer wavelengths during 15-30 days after maximum light. This suggests that SN 2003cg is likely to be an intrinsically subluminous, 91bg-like SN Ia. Exploration of SN Ia feature lines through intermediate-band photometry is briefly discussed.

Wang, X; Zhang, T; Li, Z; Wang, Xiaofeng; Zhou, Xu; Zhang, Tianmeng; Li, Zongwei

2004-01-01T23:59:59.000Z

438

Application analysis of ground source heat pumps in building space conditioning  

E-Print Network [OSTI]

for ground-source heat pumps. in ASHRAE Summer Meeting.savings of ground source heat pump systems in Europe: Afor ground-source heat pumps: A literature review,

Qian, Hua

2014-01-01T23:59:59.000Z

439

Band Tunneling through Double Barrier in Bilayer Graphene  

E-Print Network [OSTI]

By taking into account the full four band energy spectrum, we calculate the transmission probability and conductance of electrons across symmetric and asymmetric double potential barrier with a confined interlayer potential difference in bilayer graphene. For energies less than the interlayer coupling \\gamma_{1}, E \\gamma_{1}, we obtain four possible ways for transmission resulting from the two propagating modes. We compute the associated transmission probabilities as well as their contribution to the conductance, study the effect of the double barrier geometry.

Hasan A. Alshehab; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

2014-01-20T23:59:59.000Z

440

Wide-band heterodyne receiver development for effluent measurements  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) has been developing advanced infrared heterodyne receivers for plasma diagnostics in fusion reactors for over 20 years. Passive heterodyne radiometry in the LWIR region of the spectrum has historically been restricted by HgCdTe (MCT) detector technology to receiver bandwidths of only 2 GHz. Given typical atmospheric line widths of approximately 3 GHz, a CO{sub 2} (or isotope) laser local oscillator with an average line spacing of 50 GHz, and an MCT detector, only chemical species whose absorptions fall directly on top of laser lines can be measured. Thus, with traditional narrow-band heterodyne radiometry, much of the LWIR spectrum is missed and the less complex direct detection DIAL has been the preferred technique in remote sensing applications. Wide-band heterodyne receivers offer significant improvements in remote measurement capability. Progress at the Institute for Microstructural Sciences (IMS) at National Research Council of Canada and at ORNL in wide-band quantum-well infrared photodetectors (QIPs) and receivers is significantly enhancing the bandwidth capabilities of heterodyne radiometers. ORNL recently made measurements in the lab using QWIPs developed at IMS that demonstrate heterodyne quantum efficiencies of 5% with a heterodyne bandwidth of 7 GHz. The path forward indicates that > 10% heterodyne quantum efficiencies and 30-GHz bandwidths are achievable with current QWIP technology. With a chopped, 30-GHz passive heterodyne receiver, a much larger portion of the LWIR spectrum can now be covered. One potential advantage of wide-band heterodyne receivers for effluent measurements is to dramatically reduce the number of laser lines needed to characterize and distinguish multiple chemical species of interest. In the following paper, the authors discuss this and other implications of these new technologies to the characterization of effluents using both passive heterodyne radiometry and thermo-luminescence.

Hutchinson, D.P.; Richards, R.K.; Simpson, M.L.; Bennett, C.A. [Oak Ridge National Lab., TN (United States); Liu, H.C.; Buchanan, M. [National Research Council of Canada (Canada)

1998-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

BATC 13-band Photometry of Open Cluster NGC 7789  

E-Print Network [OSTI]

We present 13-band CCD intermediate-band spectrophotometry of a field centered on the open cluster NGC 7789 from 400 to nearly 1000 nm, taken with Beijing-Arizona-Taiwan-Connecticut (BATC) Multi-Color Survey photometric system. By comparing observed spectral energy distributions of NGC 7789 stars with theoretical ones, the fundamental parameters of this cluster are derived: an age of $1.4\\pm0.1$ Gyr, a distance modulus $(m-M)_{0}=11.27\\pm0.04$, a reddening $E(B-V)=0.28\\pm0.02$, and a metallicity with the solar composition $Z=0.019$. When the surface density profile for member stars with limiting magnitudes of 19.0 in the BATC $e$ band ($\\lambda_{\\textrm{eff}}=4925$ \\AA) is fitted by King model, the core radius $R_{c}=7.52\\arcmin$ and the tidal radius $R_{t}=28.84\\arcmin$ are derived for NGC 7789. The observed mass function (MF) for main sequence stars of NGC 7789 with masses from 0.95 to 1.85 $M_{\\odot}$ is fitted with a power-law function $\\phi(m)\\propto m^{\\alpha}$ and the slope $\\alpha=-0.96$ is derived. S...

Wu, Zhen-Yu; Ma, Jun; Jiang, Zhao-Ji; Chen, Jian-Sheng; Wu, Jiang-Hua; 10.1086/512189

2008-01-01T23:59:59.000Z

442

Utilization of Recently Enhanced Simulation Tools and Empirical Ground Motion Databases to Improve Ground Motion Prediction Capabilities  

E-Print Network [OSTI]

K. Irikura, H.K. Thio, P.G. Somerville, Y. Fukushima, and Y.Fukushima. “Attenuation relations of strong ground motion incatastrophic damage at the Fukushima nuclear power plant,

Khodavirdi, Khatereh

2013-01-01T23:59:59.000Z

443

CdSe-MoS2: A Quantum Size-Confined Photocatalyst for Hydrogen Evolution from Water under Visible Light  

E-Print Network [OSTI]

and for the conversion of carbon dioxides into methanol and hydrocarbons. Metal chalcogenides1­9 are promisingCdSe-MoS2: A Quantum Size-Confined Photocatalyst for Hydrogen Evolution from Water under Visible driven pathway to hydrogen. Hydrogen is not only an environmentally benign fuel for the generation

Osterloh, Frank

444

Summary Leaf reflectance at visible and near-infrared wavelengths (4001000 nm) is related primarily to pigmenta-  

E-Print Network [OSTI]

Summary Leaf reflectance at visible and near-infrared wavelengths (400­1000 nm) is related physiology and relationships between plants and their growth environment. We studied reflectance of two co collected from 24 sites and white spruce from 30 sites. Overall, reflectance spectra of the two species were

Richardson, Andrew D.

445

Bringing Visibility to Rural Users in Cote d'Ivoire Mariya Zheleva, Paul Schmitt, Morgan Vigil and Elizabeth Belding  

E-Print Network [OSTI]

from Cote d'Ivoire with an emphasis on understanding how population density impacts the use of cellularBringing Visibility to Rural Users in Cote d'Ivoire Mariya Zheleva, Paul Schmitt, Morgan Vigil a cellular traffic dataset provided by Orange in Cote d'Ivoire with the goal of identifying distinctions

Belding-Royer, Elizabeth M.

446

A Red-Shifted, Fast-Relaxing Azobenzene Photoswitch for Visible Light Control of an Ionotropic Glutamate Receptor  

E-Print Network [OSTI]

A Red-Shifted, Fast-Relaxing Azobenzene Photoswitch for Visible Light Control of an Ionotropic cores with a red-shifted cis-to-trans isomerization have been previously described, they have not yet ligand (PTL) approach. We report the synthesis and characterization of a red-shifted PTL, L-MAG0460

Trauner, Dirk

447

Visible-light active TiO2 for microwave assisted photocatalytic reactions using mercury electrodeless discharge lamps  

E-Print Network [OSTI]

activity was evaluated by the degradation of mono-chloroacetic acid in a microwave field using mercury with pure titania, the UV-Vis spectra of Ag+, Zr4+ and VO2+ doped titanium dioxide show significant absorption in visible region. The degradation efficiency of MCAA in a microwave field on these TiO2 layers

Cirkva, Vladimir

448

PPPL3301, Preprint: May 1998, UC426 Design Study of a Visible/Infrared Periscope for Intense Radiation  

E-Print Network [OSTI]

PPPL­3301, Preprint: May 1998, UC­426 Design Study of a Visible/Infrared Periscope for Intense projected heating of the reflective optics themselves to several hundred degrees Celsius. Tests of beryllium regions during operation and infrared measurement of the surface temperature of the first wall structures

449

PPPL-3301, Preprint: May 1998, UC-426 Design Study of a Visible/Infrared Periscope for Intense Radiation  

E-Print Network [OSTI]

PPPL-3301, Preprint: May 1998, UC-426 Design Study of a Visible/Infrared Periscope for Intense projected heating of the reflective optics themselves to several hundred degrees Celsius. Tests of beryllium regions during operation and infrared measurement of the surface temperature of the first wall structures

450

Combining visible and near-infrared images for realistic skin Clement Fredembach, Nathalie Barbuscia and Sabine Susstrunk  

E-Print Network [OSTI]

Combining visible and near-infrared images for realistic skin smoothing Cl´ement Fredembach components of skin colour, have little absorption in the near-infrared part of the spectrum propose that near-infrared images provide information that can be used to automatically smooth skin tones

Salvaggio, Carl

451

Advanced Ground Source Heat Pump Technology for Very-Low-Energy...  

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

loop designs being evaluated for their ground loop cost reduction potential
Credit: Oak Ridge National Lab Three newunder-utilized ground loop designs being evaluated for...

452

A capital cost comparison of commercial ground-source heat pump systems  

SciTech Connect (OSTI)

The report provides a capital cost comparison of commercial ground source heat pump systems. The study includes groundwater systems, ground-coupled systems and hybrid systems.

Rafferty, K.

1994-06-01T23:59:59.000Z

453

E-Print Network 3.0 - achieving ground state Sample Search Results  

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

by their frequency or polarization upon decay to their respective ground states. Preliminary... isotope 137 Ba+ whose nuclear spin leads to ground state ... Source:...

454

Soot scattering measurements in the visible and near-infrared spectrum  

SciTech Connect (OSTI)

Scattering to extinction cross-section ratios, {rho}{sub se} were measured using the NIST Large Agglomerate Optics Facility for soot produced from ethene and acetylene laminar diffusion flames. Measurements were performed using light sources at 543.5 nm, 632.8 nm and 856 nm. The average scattering to extinction cross-section ratios for these wavelengths are equal to 0.246, 0.196, and 0.196 for ethene and 0.316, 0.230, and 0.239 for acetylene. The 856 nm measurements represent the longest wavelength for which accurate scattering measurements have been performed for soot. The size distribution and fractal properties of the two soots were determined to assess the effects of limited acceptance angle range, finite size of the sensor, and departure from cosine response on the uncertainty in the measurement of {rho}{sub se} The expanded relative uncertainty (95% confidence level) was found to be {+-}6% at the two visible wavelengths and {+-}8% at 856 nm. Both the magnitude and wavelength dependence of {rho}{sub se} for the present experiments are significantly different from those reported by Krishnan et al. for overfire soot produced using a turbulent flame. The results are compared with the predictions of fractal optics.

ZHU,JINYU; CHOI,MUN YOUNG; MULHOLLAND,GEORGE W.; GRITZO,LOUIS A.

2000-02-08T23:59:59.000Z

455

Hanford Site ground-water monitoring for 1993  

SciTech Connect (OSTI)

This report presents the results of the Ground-Water Surveillance Project monitoring for calendar year 1993 on the Hanford Site, Washington. Hanford Site operations from 1943 onward produced large quantities of radiological and chemical waste that have impacted ground-water quality on the Site. Monitoring of water levels and ground-water chemistry is performed to track the extent of contamination and trends in contaminant concentrations. The 1993 monitoring was also designed to identify emerging ground-water quality problems. The information obtained is used to verify compliance with applicable environmental regulations and to evaluate remedial actions. Data from other monitoring and characterization programs were incorporated to provide an integrated assessment of Site ground-water quality. Additional characterization of the Site`s geologic setting and hydrology was performed to support the interpretation of contaminant distributions. Numerical modeling of sitewide ground-water flow also supported the overall project goals. Water-level monitoring was performed to evaluate ground-water flow directions, to track changes in water levels, and to relate such changes to changes in site disposal practices. Water levels over most of the Hanford Site continued to decline between June 1992 and June 1993. The greatest declines occurred in the 200-West Area. These declines are part of the continued response to the cessation of discharge to U Pond and other disposal facilities. The low permeability in this area which enhanced mounding of waste-water discharge has also slowed the response to the reduction of disposal. Water levels remained nearly constant in the vicinity of B Pond, as a result of continued disposal to the pond. Water levels measured from wells in the unconfined aquifer north and east of the Columbia River indicate that the primary source of recharge is irrigation practices.

Dresel, P.E.; Luttrell, S.P.; Evans, J.C. [and others

1994-09-01T23:59:59.000Z

456

E-Print Network 3.0 - amniotic band syndrome Sample Search Results  

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

band syndrome Search Powered by Explorit Topic List Advanced Search Sample search results for: amniotic band syndrome Page: << < 1 2 3 4 5 > >> 1 CLIN.CHEM.247, 1131-1133(1978)...

457

Pressure Behaviour of the UV and Green Emission Bands in ZnO...  

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

Pressure Behaviour of the UV and Green Emission Bands in ZnO Micro-rods. Pressure Behaviour of the UV and Green Emission Bands in ZnO Micro-rods. Abstract: The pressure behavior of...

458

Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid...  

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

Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid solutions: A first-principles study. Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid solutions: A...

459

E-Print Network 3.0 - affecting band 7q36 Sample Search Results  

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

not to the banding... Vorticity banding in rodlike virus suspensions Kyongok Kang,1 M. P. Lettinga,1 Z. Dogic,2 and Jan K... , Massachusetts 02142, USA Received 16 February 2006;...

460

Infrared and visible laser double resonance studies of vibrational energy transfer processes in polyatomic molecules. [Chromyl chloride solutions  

SciTech Connect (OSTI)

A study of the spectroscopy of chromyl chloride (CrO{sub 2}Cl{sub 2} ) in dilute solutions has been initiated. A discussion is given of its spectra and emission bands. 17 refs, 5 figs, 1 tab. (DLC)

Bhatnagar, R. (Texas Southern Univ., Houston, TX (United States). Dept. of Chemistry)

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ground visible band" 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

Single-junction solar cells with the optimum band gap for terrestrial concentrator applications  

DOE Patents [OSTI]

A single-junction solar cell having the ideal band gap for terrestrial concentrator applications. Computer modeling studies of single-junction solar cells have shown that the presence of absorption bands in the direct spectrum has the effect of "pinning" the optimum band gap for a wide range of operating conditions at a value of 1.14.+-.0.02 eV. Efficiencies exceeding 30% may be possible at high concentration ratios for devices with the ideal band gap.

Wanlass, Mark W. (Golden, CO)

1994-01-01T23:59:59.000Z

462

Grand Traverse Band Renewable Energy Feasibility Study in Wind, Biomass and Solar  

SciTech Connect (OSTI)

Renewable Energy Feasibility Study for wind, biomass, solar on the Grand Traverse Band tribal lands from 2005 - 2008

Suzanne McSawby, Project Director

2008-12-31T23:59:59.000Z

463

REPRODUCING VISIBLE AND NEAR-INFRARED REFLECTANCE SPECTRA OF LUNAR ROCKS DIRECTLY FROM THEIR END-MEMBER SPECTRA: IMPORTANCE OF ILMENITE IN  

E-Print Network [OSTI]

REPRODUCING VISIBLE AND NEAR-INFRARED REFLECTANCE SPECTRA OF LUNAR ROCKS DIRECTLY FROM THEIR END as a solid foundation for lunar science and explo- ration. The visible and near-infrared spectroscopy, 15555, 70017, and 70035 have been prepared for analysis. Bidirectional reflectance spectra (0.28- 2.6 µm

Hiroi, Takahiro

464

Loops of Energy Bands for Bloch Waves in Optical Lattices By Matt Coles and Dmitry Pelinovsky  

E-Print Network [OSTI]

Loops of Energy Bands for Bloch Waves in Optical Lattices By Matt Coles and Dmitry Pelinovsky We the energy bands for Bloch waves in optically trapped Bose­Einstein condensates. The comparison between in this context. These bifurcations generate loops in the energy bands of the Bloch waves near the ends

Pelinovsky, Dmitry

465

ensl-00109517,version1-24Oct2006 Superconducting instability in 3 bands metallic nanotubes  

E-Print Network [OSTI]

ensl-00109517,version1-24Oct2006 Superconducting instability in 3 bands metallic nanotubes David on small radius nanotubes, we study the superconducting in- stabilities of cylindrical (5,0) nanotubes. According to band structure calculations, these nanotubes possess three bands at the Fermi energy. Using

466

Band structures Optical absorption Summary Key concepts in Density Functional Theory (II)  

E-Print Network [OSTI]

Band structures Optical absorption Summary Key concepts in Density Functional Theory (II) Kohn, Belfast Key concepts in Density Functional Theory (II) Silvana Botti #12;Band structures Optical in Density Functional Theory (II) Silvana Botti #12;Band structures Optical absorption Summary Outline 1 From

Botti, Silvana

467

Getting simultaneous red and near infrared bands from a single digital camera for plant monitoring applications  

E-Print Network [OSTI]

Getting simultaneous red and near infrared bands from a single digital camera for plant monitoring including red and near-infrared bands have proved their efficiency for vegetation-soil discrimination an original solution to obtain simultaneously the near-infrared and red bands from a standard RGB camera

Paris-Sud XI, Université de

468

Retention of Butt-End Aluminum Leg Bands by Wild Turkeys  

E-Print Network [OSTI]

Note Retention of Butt-End Aluminum Leg Bands by Wild Turkeys MATTHEW J. BUTLER,1,2 Department wild turkeys (Meleagris gallopavo intermedia) captured in Texas and Kansas, USA, 2000­2009. We examined 187 recaptured or harvested radiotagged wild turkeys to determine band retention and modeled band

Butler, Matthew J.

469

The PortevinLe Chatelier (PLC) effect and shear band formation in an AA5754 alloy  

E-Print Network [OSTI]

The Portevin­Le Chatelier (PLC) effect and shear band formation in an AA5754 alloy Herdawandi Halim in order to observe Portevin­Le Chatelier (PLC) band behaviour during tensile deformation of AA5754 sheet and subsequently to measure the level of incre- mental plastic strain carried within the bands. In addition, PLC

Niewczas, Marek

470

Band anticrossing effects in highly mismatched semiconductor alloys  

SciTech Connect (OSTI)

The first five chapters of this thesis focus on studies of band anticrossing (BAC) effects in highly electronegativity- mismatched semiconductor alloys. The concept of bandgap bowing has been used to describe the deviation of the alloy bandgap from a linear interpolation. Bowing parameters as large as 2.5 eV (for ZnSTe) and close to zero (for AlGaAs and ZnSSe) have been observed experimentally. Recent advances in thin film deposition techniques have allowed the growth of semiconductor alloys composed of significantly different constituents with ever- improving crystalline quality (e.g., GaAs{sub 1-x}N{sub x} and GaP{sub 1-x}N{sub x} with x {approx}< 0.05). These alloys exhibit many novel and interesting properties including, in particular, a giant bandgap bowing (bowing parameters > 14 eV). A band anticrossing model has been developed to explain these properties. The model shows that the predominant bowing mechanism in these systems is driven by the anticrossing interaction between the localized level associated with the minority component and the band states of the host. In this thesis I discuss my studies of the BAC effects in these highly mismatched semiconductors. It will be shown that the results of the physically intuitive BAC model can be derived from the Hamiltonian of the many-impurity Anderson model. The band restructuring caused by the BAC interaction is responsible for a series of experimental observations such as a large bandgap reduction, an enhancement of the electron effective mass, and a decrease in the pressure coefficient of the fundamental gap energy. Results of further experimental investigations of the optical properties of quantum wells based on these materials will be also presented. It will be shown that the BAC interaction occurs not only between localized states and conduction band states at the Brillouin zone center, but also exists over all of k-space. Finally, taking ZnSTe and ZnSeTe as examples, I show that BAC also occurs between localized states and the valence band states. Soft x-ray fluorescence experiments provide direct evidence of the BAC interaction in these systems. In the final chapter of the thesis, I describe and summarize my studies of optical properties of wurtzite InN and related alloys. Early studies performed on InN films grown by sputtering techniques suggested a direct bandgap of {approx}1.9 eV for this semiconductor. Very recently, high-quality InN films with much higher mobility have become available by using the molecular beam epitaxy growth method. Optical experiments carried out on these samples reveal a narrow bandgap for InN of 0.77 eV, much lower than the previously accepted value. Optical properties of InGaN and InAlN ternaries on the In rich side have also been characterized and are found to be consistent with the narrow bandgap of InN. The bandgap bowing parameters in these alloys were determined. In the context of these findings, the bandgap energies of InGaN and InAlN were found to cover a wide spectral range from the infrared for InN to the ultraviolet for GaN and deep ultraviolet for AlN. The significance of this work is rooted in many important applications of nitride semiconductors in optoelectronics and solar energy conversion devices.

Wu, Junqiao

2002-09-09T23:59:59.000Z

471

The X-band klystron program at SLAC  

SciTech Connect (OSTI)

The X-band rf source development at SLAC can be considered a qualified success. A total of twelve klystrons were built. Six of them are still in use. The latest tube, XL4, produced 75 MW at an efficiency of 47.5 percent. However, victory cannot be declared as yet, since an NLC prototype has not been fully designed and the decision between permanent magnet focusing and a super-conducting solenoid has not been formally made. Daryl Sprehn`s paper will present the status of the PPM klystron development. The authors believe that a PPM X-band source will work, at 50 as well as at 75 megawatts. But they are prepared to adapt the XL4 design to a super-conducting solenoid, should the PPM klystron develop unexpected problems. The SLAC program is now in its seventh year. It may well be the longest and most expensive microwave tube development on record, in a government laboratory or in industry. Direct and related costs for the total effort are probably of the order of $10 million. In these circumstances it is perhaps not surprising that it has been possible to produce a klystron with the performance of XL4. At the same time, it must be said that the necessary leap in technology from the SLAC 60-megawatt S-band production klystrons to a klystron of comparable performance at four times the frequency could not be realized without some very careful experimentation and, most importantly, without the infrastructure for tube fabrication and testing available at SLAC. The design of an 11.4 GHz 50--100 MW klystron, with microsecond pulses and a pulse repetition frequency of 180 Hz presents a number of technical challenges which are listed here.

Caryotakis, G.

1996-04-01T23:59:59.000Z

472

History and Evolution of Control Banding: A Review  

SciTech Connect (OSTI)

Control Banding (CB) strategies offer simplified solutions for controlling worker exposures to constituents often encountered in the workplace. The original CB model was developed within the pharmaceutical industry; however, the modern movement involves models developed for non-experts to input hazard and exposure potential information for bulk chemical processes, receiving control advice as a result. The CB approach utilizes these models for the dissemination of qualitative and semi-quantitative risk assessment tools being developed to complement the traditional industrial hygiene model of air sampling and analysis. It is being applied and tested in small and medium size enterprises (SMEs) within developed countries and industrially developing countries; however, large enterprises (LEs) have also incorporated these strategies within chemical safety programs. Existing research of the components of the most available CB model, the Control of Substances Hazardous to Health (COSHH) Essentials, has shown that exposure bands do not always provide adequate margins of safety, that there is a high rate of under-control errors, that it works better with dusts than with vapors, that there is an inherent inaccuracy in estimating variability, and that when taken together the outcomes of this model may lead to potentially inappropriate workplace confidence in chemical exposure reduction in some operations. Alternatively, large-scale comparisons of industry exposure data to this CB model's outcomes have indicated more promising results with a high correlation seen internationally. With the accuracy of the toxicological ratings and hazard band classification currently in question, their proper reevaluation will be of great benefit to the reliability of existing and future CB models. The need for a more complete analysis of CB model components and, most importantly, a more comprehensive prospective research process remains and will be important in understanding implications of the model's overall effectiveness. Since the CB approach is now being used worldwide with an even broader implementation in progress, further research toward understanding its strengths and weaknesses will assist in its further refinement and confidence in its ongoing utility.

Zalk, D; Nelson, D

2006-07-19T23:59:59.000Z

473

Wide band cryogenic ultra-high vacuum microwave absorber  

DOE Patents [OSTI]

An absorber wave guide assembly for absorbing higher order modes of microwave energy under cryogenic ultra-high vacuum conditions, that absorbs wide-band multi-mode energy. The absorber is of a special triangular shape, made from flat tiles of silicon carbide and aluminum nitride. The leading sharp end of the absorber is located in a corner of the wave guide and tapers to a larger cross-sectional area whose center is located approximately in the center of the wave guide. The absorber is relatively short, being of less height than the maximum width of the wave guide.

Campisi, Isidoro E. (Newport News, VA)

1992-01-01T23:59:59.000Z

474

Band Structure Asymmetry of Bilayer Graphene Revealed by Infrared Spectroscopy  

SciTech Connect (OSTI)

We report on infrared spectroscopy of bilayer graphene integrated in gated structures. We observe a significant asymmetry in the optical conductivity upon electrostatic doping of electrons and holes. We show that this finding arises from a marked asymmetry between the valence and conduction bands, which is mainly due to the inequivalence of the two sublattices within the graphene layer and the next-nearest-neighbor interlayer coupling. From the conductivity data, the energy difference of the two sublattices and the interlayer coupling energy are directly determined.

Li, Z.Q.; Henriksen, E.A.; Jiang, Z.; Hao, Zhao; Martin, Michael C.; Kim, P.; Stormer, H.L.; Basov, Dimitri N.

2008-12-10T23:59:59.000Z

475

Ka-Band ARM Zenith Radar (KAZR) Instrument Handbook  

SciTech Connect (OSTI)

The Ka-band ARM zenith radar (KAZR) is a zenith-pointing Doppler cloud radar operating at approximately 35 GHz. The KAZR is an evolutionary follow-on radar to ARM's widely successful millimeter-wavelength cloud radar (MMCR). The main purpose of the KAZR is to provide vertical profiles of clouds by measuring the first three Doppler moments: reflectivity, radial Doppler velocity, and spectra width. At the sites where the dual-polarization measurements are made, the Doppler moments for the cross-polarization channel are also available. In addition to the moments, velocity spectra are also continuously recorded for each range gate.

Widener, K; Bharadwaj, N; Johnson, K

2012-03-06T23:59:59.000Z

476

Wide band cryogenic ultra-high vacuum microwave absorber  

DOE Patents [OSTI]

An absorber waveguide assembly for absorbing higher order modes of microwave energy under cryogenic ultra-high vacuum conditions, that absorbs wide-band multi-mode energy. The absorber is of a special triangular shape, made from flat tiles of silicon carbide and aluminum nitride. The leading sharp end of the absorber is located in a corner of the waveguide and tapers to a larger cross-sectional area whose center is located approximately in the center of the wave guide. The absorber is relatively short, being of less height than the maximum width of the waveguide. 11 figs.

Campisi, I.E.

1992-05-12T23:59:59.000Z

477

VIMOS total transmission profiles for broad-band filters  

E-Print Network [OSTI]

VIMOS is a wide-field imager and spectrograph mounted on UT3 at the VLT, whose FOV consists of four 7'x8' quadrants. Here we present the measurements of total transmission profiles -- i.e. the throughput of telescope + instrument -- for the broad band filters U, B, V, R, I, and z for each of its four quadrants. Those measurements can also be downloaded from the public VIMOS web-page. The transmission profiles are compared with previous estimates from the VIMOS consortium.

S. Mieske; M. Rejkuba; S. Bagnulo; C. Izzo; G. Marconi

2007-04-13T23:59:59.000Z

478

W-band ARM Cloud Radar (WACR) Update and Status  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500IIVasudhaSurface. |VolunteeringMap2-5: East AlternativeWW-band

479

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystalline Gallium Oxide ThinIon CoolingSubstrateSubstrate-Induced Band-Gap

480

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystalline Gallium Oxide ThinIonSubstrate-Induced Band-Gap Opening in

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481

Quantitative Measurement of Integrated Band Intensities of Benzene Vapor in  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298, and 323 K. | EMSL Measurement of Integrated Band

482

Coliphages and bacteria in ground water from Tehran, Iran  

SciTech Connect (OSTI)

The purpose of this study was to examine the microbial quality of Tehran's ground water and selected springs, using coliphages and selected bacteria as indicator organisms. The water table in Tehran varies from approximately 160 meters in the north to approximately 5 meters in the south. Individual wells and subterranean man-made aqueducts (qanate) tap the ground water. Since Tehran lacks municipal sewage facilities, waste disposal is by means of seepage pits, privies and leaching cesspools. There is potential for waste from these sites to leach into the ground water, particularly in the south where the water table is near the surface and the clay content of the soil holds moisture during periods of heavy rainfall.

Shariatpanahi, M.; Anderson, A.C.

1987-07-01T23:59:59.000Z

483

Functional ground testing - Evaluating the Tomahawk Cruise Missile  

SciTech Connect (OSTI)

Flight testing evaluates vehicle performance in a flight environment and, in the case of a weapon system, clearly indicates mission readiness. However, there is a cost-effective alternative method of testing which is capable of indicating weapon system functionality and subsystem success. Functional ground testing of the all-up round Tomahawk Cruise Missile is described. The Tomahawk functional ground test (FGT) cannot make the same conclusive determinations that an operational test launch can. This paper describes the Tomahawk FGT and what makes it unique. It describes the developments and status of this testing methodology, the data acquisition and control, and the engineering challenges encountered. 3 refs.

Parise, K.W. (U.S. Navy, Test and Evaluation Dept., Indian Head, MD (United States))

1992-01-01T23:59:59.000Z

484

From local to global ground states in Ising spin glasses  

E-Print Network [OSTI]

We consider whether it is possible to find ground states of frustrated spin systems by solving them locally. Using spin glass physics and Imry-Ma arguments in addition to numerical benchmarks we quantify the power of such local solution methods and show that for the average low-dimensional spin glass problem outside the spin- glass phase the exact ground state can be found in polynomial time. In the second part we present a heuristic, general-purpose hierarchical approach which for spin glasses on chimera graphs and lattices in two and three dimensions outperforms, to our knowledge, any other solver currently around, with significantly better scaling performance than simulated annealing.

Ilia Zintchenko; Matthew B. Hastings; Matthias Troyer

2015-01-09T23:59:59.000Z

485

ZnO/Sn:In2O3 and ZnO/CdTe band offsets for extremely thin absorber...  

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

ZnOSn:In2O3 and ZnOCdTe band offsets for extremely thin absorber photovoltaics . ZnOSn:In2O3 and ZnOCdTe band offsets for extremely thin absorber photovoltaics . Abstract: Band...

486

Triaxial strongly deformed bands in {sup 164}Hf and the effect of elevated yrast line  

SciTech Connect (OSTI)

Two exotic rotational bands have been identified in {sup 164}Hf and linked to known states. They are interpreted as being associated with the calculated triaxial strongly deformed (TSD) potential energy minimum. The bands are substantially stronger and are located at much lower spins than the previously discovered TSD bands in {sup 168}Hf. In addition to the proton and neutron shell gaps at large trixiality, it was proposed that the relative excitation energy of TSD bands above the yrast line plays an important role in the population of TSD bands.

Ma Wenchao [Department of Physics, Mississippi State University, Mississippi State, MS 39762 (United States)

2012-10-20T23:59:59.000Z

487

Partially filled intermediate band of Cr-doped GaN films  

SciTech Connect (OSTI)

We investigated the band structure of sputtered Cr-doped GaN (GaCrN) films using optical absorption, photoelectron yield spectroscopy, and charge transport measurements. It was found that an additional energy band is formed in the intrinsic band gap of GaN upon Cr doping, and that charge carriers in the material move in the inserted band. Prototype solar cells showed enhanced short circuit current and open circuit voltage in the n-GaN/GaCrN/p-GaN structure compared to the GaCrN/p-GaN structure, which validates the proposed concept of an intermediate-band solar cell.

Sonoda, S. [Department of Electronics, Kyoto Institute of Technology, Kyoto 606-8585 (Japan)

2012-05-14T23:59:59.000Z

488

Hoyle band and $?$ condensation in ${^{12}{\\rm C}}$  

E-Print Network [OSTI]

The excited states in ${^{12}{\\rm C}}$ are investigated by using an extended version of the so-called Tohsaki-Horiuchi- Schuck-R\\"opke (THSR) wave function, where both the $3\\alpha$ condensate and ${^{8}{\\rm Be}} + \\alpha$ cluster asymptotic configurations are included. A new method is also used to resolve spurious continuum coupling with physical states. We focus on the structures of the "Hoyle band" states, $2_2^+$, and $4_2^+$ states, which are recently observed above the Hoyle state and of the $0_3^+$ and $0_4^+$ states, which are also quite recently identified in experiment. Their resonance parameters and decay properties are reasonably reproduced. All these states have gaslike configurations of the $3\\alpha$ clusters with larger root mean square radii than that of the Hoyle state. The Hoyle band is not simply considered to be the ${^{8}{\\rm Be}}(0^+) +\\alpha$ rotation as suggested by previous cluster model calculations, nor to be a rotation of a rigid-body triangle-shaped object composed of the $3\\alpha$ particles. This is mainly due to the specificity of the Hoyle state, which has the $3\\alpha$ condensate structure and gives a rise to the $0_3^+$ state with a prominent ${^{8}{\\rm Be}}(0^+)+\\alpha$ structure as a result of very strong monopole excitation from the Hoyle state.

Y. Funaki

2014-08-25T23:59:59.000Z

489

Narrow-bandwidth Tunable Picosecond Pulses in the Visible Produced by Noncollinear optical parametric Amplification with a Chirped Blue Pump  

SciTech Connect (OSTI)

Narrow-bandwidth ( ?27?cm{sup ?1} ) tunable picosecond pulses from 480?nm–780?nm were generated from the output of a 1?kHz femtosecond titanium:sapphire laser system using a type I noncollinear optical parametric amplifier (NOPA) with chirped second-harmonic generation (SHG) pumping. Unlike a femto second NOPA, this system utilizes a broadband pump beam, the chirped 400?nm SHG of the Ti:sapphire fundamental, to amplify a monochromatic signal beam (spectrally-filtered output of a type II collinear OPA). Optimum geometric conditions for simultaneous phase- and group-velocity matching were calculated in the visible spectrum. This design is an efficient and simple method for generating tunable visible picosecond pulses that are synchronized to the femtosecond pulses.

Co, Dick T.; Lockard, Jenny V.; McCamant, David W.; Wasielewski, Michael R

2010-01-01T23:59:59.000Z

490

Direct Water Splitting under Visible Light with a Nanostructured Photoanode and GaInP2 Photocathode  

SciTech Connect (OSTI)

Thin films of hematite nanorod and GaInP2 were used for direct water splitting under visible light. In open circuit conditions, the potential of hematite shifted cathodically and that of GaInP2 anodically, which generated an open circuit voltage between the two electrodes. In short circuit condition, the combination of the two photoelectrodes can split water under visible light illumination, though with a very low current of {micro}A/cm2 level even at 1 W/cm2 light. By means of chopped light, we found that hematite nanorod has a low photocurrent, which is responsible for the low short circuit current of the 2-electrode combination. The low photoresponse of hematite nanorods is due to the recombination of photo- generated charges, low holes mobility, and short diffusion length.

Wang, H.; Deutsch, T.; Turner, J.

2008-01-01T23:59:59.000Z

491

Ground motion modeling of Hayward fault scenario earthquakes II:Simulation of long-period and broadband ground motions  

SciTech Connect (OSTI)

We simulate long-period (T > 1.0-2.0 s) and broadband (T > 0.1 s) ground motions for 39 scenarios earthquakes (Mw 6.7-7.2) involving the Hayward, Calaveras, and Rodgers Creek faults. For rupture on the Hayward fault we consider the effects of creep on coseismic slip using two different approaches, both of which reduce the ground motions compared with neglecting the influence of creep. Nevertheless, the scenario earthquakes generate strong shaking throughout the San Francisco Bay area with about 50% of the urban area experiencing MMI VII or greater for the magnitude 7.0 scenario events. Long-period simulations of the 2007 Mw 4.18 Oakland and 2007 Mw 4.5 Alum Rock earthquakes show that the USGS Bay Area Velocity Model version 08.3.0 permits simulation of the amplitude and duration of shaking throughout the San Francisco Bay area, with the greatest accuracy in the Santa Clara Valley (San Jose area). The ground motions exhibit a strong sensitivity to the rupture length (or magnitude), hypocenter (or rupture directivity), and slip distribution. The ground motions display a much weaker sensitivity to the rise time and rupture speed. Peak velocities, peak accelerations, and spectral accelerations from the synthetic broadband ground motions are, on average, slightly higher than the Next Generation Attenuation (NGA) ground-motion prediction equations. We attribute at least some of this difference to the relatively narrow width of the Hayward fault ruptures. The simulations suggest that the Spudich and Chiou (2008) directivity corrections to the NGA relations could be improved by including a dependence on the rupture speed and increasing the areal extent of rupture directivity with period. The simulations also indicate that the NGA relations may under-predict amplification in shallow sedimentary basins.

Aagaard, B T; Graves, R W; Rodgers, A; Brocher, T M; Simpson, R W; Dreger, D; Petersson, N A; Larsen, S C; Ma, S; Jachens, R C

2009-11-04T23:59:59.000Z

492

Analysis of the empirical relations between visible solar radiation, the solar altitude and the transparency of the atmosphere  

E-Print Network [OSTI]

ANALYSIS OF THE EMPIRICAL RELATIONS BETWEEN VISUAL SOLAR RADIATION, THE SOLAR ALTITUDE AND THE TRANSPARENCY OF THE ATMOSPHERE A Thesis A. Garcia Occhipinti Submitted to the Graduate College of the Texas ARM Untverstty in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January 1965 Major Subject: Oceanography ANALYSIS OF THE EMPIRICAL RELATIONS BETWEEN VISIBLE SOLAR RADIATION, THE SOLAR ALTITUDE AND THE TRANSPARENCY OF THE ATMOSPHERE A Thesis A. Garcia Occhipinti...

Garcia Occhipinti, Antonio

1965-01-01T23:59:59.000Z

493

Strained-Si1-xGex/Si Band-to-Band Tunneling Transistors: Impact of Tunnel-Junction Germanium Composition and Doping Concentration on Switching Behavior  

E-Print Network [OSTI]

Strained pseudomorphic Si/Si [subscript 1-x]Ge [subscript x]/Si gate-controlled band-to-band tunneling (BTBT) devices have been analyzed with varying Ge composition up to 57% and p+ tunnel-junction (source) doping concentration ...

Antoniadis, Dimitri A.

494

Seismic design technology for breeder reactor structures. Volume 1. Special topics in earthquake ground motion  

SciTech Connect (OSTI)

This report is divided into twelve chapters: seismic hazard analysis procedures, statistical and probabilistic considerations, vertical ground motion characteristics, vertical ground response spectrum shapes, effects of inclined rock strata on site response, correlation of ground response spectra with intensity, intensity attenuation relationships, peak ground acceleration in the very mean field, statistical analysis of response spectral amplitudes, contributions of body and surface waves, evaluation of ground motion characteristics, and design earthquake motions. (DLC)

Reddy, D.P.

1983-04-01T23:59:59.000Z

495

Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances  

SciTech Connect (OSTI)

Novel Ag/AgI/BiOI composites were controllably synthesized via a facile ion-exchange followed by photoreduction strategy by using hierarchical BiOI microflower as substrate. The as-prepared Ag/AgI/BiOI composites were studied by X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) surface area analyzer and UV–vis diffuse reflectance spectroscopy (DRS). Under visible light (?>420 nm), Ag/AgI/BiOI displayed highly enhanced photocatalytic activities for degradation of methyl orange (MO) compared to the pure hierarchical BiOI, which was mainly ascribed to the highly efficient separation of electrons and holes through the closely contacted interfaces in the Ag/AgI/BiOI ternary system. - Graphical abstract: Ag/AgI/BiOI displayed excellent photocatalytic activities for methyl orange degradation under visible light, which was mainly ascribed to the highly efficient separation of electrons and holes through Z-scheme pathway. Display Omitted - Highlights: • Novel Ag/AgI/BiOI composites were successfully synthesized. • Ag/AgI/BiOI displayed higher visible light activities than those of pure BiOI and AgI. • ·O{sub 2}{sup ?} and h{sup +}, especially ·O{sub 2}{sup ?}, dominated the photodegradation process of MO. • A Z-scheme pattern was adopted for Ag/AgI/BiOI activity enhancement.

Cao, Jing, E-mail: caojing@mail.ipc.ac.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China); Zhao, Yijie; Lin, Haili; Xu, Benyan [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); Chen, Shifu, E-mail: chshifu@chnu.edu.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China)

2013-10-15T23:59:59.000Z

496

Nonlinear behavior of reinforced concrete structures subjected to ground motion  

E-Print Network [OSTI]

the procedure by which this Finite Element Code obtains the response of the proposed structure to 15 seconds of the El Centro time history scaled to represent an earthquake with a maximum ground acceleration ol' 0. 9g. ABAQUS ofi'ers several methods...

Abraham, Moises Alberto

1991-01-01T23:59:59.000Z

497

Ground state energy scaling laws during the onset and destruction  

E-Print Network [OSTI]

@cims.nyu.edu; Courant Institute, New York University, New York, NY 10012, USA 4 otto@iam.uni-bonn.de; Institut fGround state energy scaling laws during the onset and destruction of the intermediate state Abstract The intermediate state of a type-I superconductor is a classical ex- ample of energy

498

The MER/CIP Portal for Ground Operations Louise Chan*  

E-Print Network [OSTI]

The MER/CIP Portal for Ground Operations Louise Chan* Sanjay Desai* Matthew D'Ortenzio Robert E Portal We developed the Mars Exploration Rover/Collaborative Information Portal (MER/CIP) to facilitate MER operations. MER/CIP provides a cen- tralized, one-stop delivery platform integrating science

Filman, Robert E.

499

ENERGY REQUIREMENTS AND DIET OF THE CALIFORNIA GROUND SQUIRREL  

E-Print Network [OSTI]

and Wildlife Service, Denver Wildlife Research Center, Denver, Colorado 80225' SARAH R. WOODMANSEE, 1321 (SI'('Tmol,/'i1us lieeclwyi fislleri) iUe 0.75 ml!Wh. A ground squirrel's daily maintenance successive times. To confirm reliability of resting meta- bolic rate estimates, individual energy

500

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

SciTech Connect (OSTI)

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

H. M. Sulloway

2008-10-02T23:59:59.000Z