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1

Help:FormattingResults | 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 Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpen EnergyBoard" form.GuizhouCategories JumpFormattingResults

2

OpenEI Community - multicolor  

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'sOklahoma/Geothermal < Oklahomast, 2012CoastfredResult Formats onGeothermal

3

Multicolored Electrochromism in Polymers: Structures and Devices  

E-Print Network [OSTI]

Multicolored Electrochromism in Polymers: Structures and Devices Avni A. Argun, Pierre-Henri Aubert May 12, 2004 A review of electrochromic (EC) polymers and their applications in absorption/transmission, reflective, and patterned electrochromic devices (ECDs) is presented. Fundamental properties of EC materials

Tanner, David B.

4

Multicolor, High Efficiency, Nanotextured LEDs  

SciTech Connect (OSTI)

We report on research results in this project which synergize advanced material science approaches with fundamental optical physics concepts pertaining to light-matter interaction, with the goal of solving seminal problems for the development of very high performance light emitting diodes (LEDs) in the blue and green for Solid State Lighting applications. Accomplishments in the duration of the contract period include (i) heteroepitaxy of nitrogen-polar LEDs on sapphire, (ii) heteroepitaxy of semipolar (11{bar 2}2) green LEDs on sapphire, (iii) synthesis of quantum-dot loaded nanoporous GaN that emits white light without phosphor conversion, (iv) demonstration of the highest quality semipolar (11{bar 2}2) GaN on sapphire using orientation-controlled epitaxy, (v) synthesis of nanoscale GaN and InGaN medium, and (vi) development of a novel liftoff process for manufacturing GaN thin-film vertical LEDs. The body of results is presented in this report shows how a solid foundation has been laid, with several noticeable accomplishments, for innovative research, consistent with the stated milestones.

Jung Han; Arto Nurmikko

2011-09-30T23:59:59.000Z

5

Single-fiber multi-color pyrometry  

DOE Patents [OSTI]

This invention is a fiber-based multi-color pyrometry set-up for real-time non-contact temperature and emissivity measurement. The system includes a single optical fiber to collect radiation emitted by a target, a reflective rotating chopper to split the collected radiation into two or more paths while modulating the radiation for lock-in amplification (i.e., phase-sensitive detection), at least two detectors possibly of different spectral bandwidths with or without filters to limit the wavelength regions detected and optics to direct and focus the radiation onto the sensitive areas of the detectors. A computer algorithm is used to calculate the true temperature and emissivity of a target based on blackbody calibrations. The system components are enclosed in a light-tight housing, with provision for the fiber to extend outside to collect the radiation. Radiation emitted by the target is transmitted through the fiber to the reflective chopper, which either allows the radiation to pass straight through or reflects the radiation into one or more separate paths. Each path includes a detector with or without filters and corresponding optics to direct and focus the radiation onto the active area of the detector. The signals are recovered using lock-in amplification. Calibration formulas for the signals obtained using a blackbody of known temperature are used to compute the true temperature and emissivity of the target. The temperature range of the pyrometer system is determined by the spectral characteristics of the optical components.

Small IV, Ward; Celliers, Peter

2004-01-27T23:59:59.000Z

6

Single-fiber multi-color pyrometry  

DOE Patents [OSTI]

This invention is a fiber-based multi-color pyrometry set-up for real-time non-contact temperature and emissivity measurement. The system includes a single optical fiber to collect radiation emitted by a target, a reflective rotating chopper to split the collected radiation into two or more paths while modulating the radiation for lock-in amplification (i.e., phase-sensitive detection), at least two detectors possibly of different spectral bandwidths with or without filters to limit the wavelength regions detected and optics to direct and focus the radiation onto the sensitive areas of the detectors. A computer algorithm is used to calculate the true temperature and emissivity of a target based on blackbody calibrations. The system components are enclosed in a light-tight housing, with provision for the fiber to extend outside to collect the radiation. Radiation emitted by the target is transmitted through the fiber to the reflective chopper, which either allows the radiation to pass straight through or reflects the radiation into one or more separate paths. Each path includes a detector with or without filters and corresponding optics to direct and focus the radiation onto the active area of the detector. The signals are recovered using lock-in amplification. Calibration formulas for the signals obtained using a blackbody of known temperature are used to compute the true temperature and emissivity of the target. The temperature range of the pyrometer system is determined by the spectral characteristics of the optical components.

Small, IV, Ward (Livermore, CA); Celliers, Peter (Berkeley, CA)

2000-01-01T23:59:59.000Z

7

Photometric Redshift Determination with the BATC Multicolor System  

E-Print Network [OSTI]

In this paper, we present the methodology of photometric redshift determination with the BATC 15-color system by using hyperz program. Both simulated galaxies and real galaxies with known redshifts were used to estimate the accuracy of redshifts inferred from the multicolor photometry. From the test with simulated galaxies, the uncertainty in the inferred redshifts is about $0.02\\sim0.03$ for a given range of photometric uncertainty of $0.05 \\sim 0.10$. The results with the 27 real galaxies are in good agreement with the simulated ones. The advantage of using BATC intermediate-band system to derive redshift is clear through the comparison with the UBVRI broad-band system. The accuracy in redshift determination with BATC system is mainly affected by the selection of filters and the photometric uncertainties in the observation. When we take the limiting magnitudes of the 15 filters into account, we find that redshift can be determined with good accuracy for galaxies with redshifts less than 0.5, using only filt...

Xia, L; Ma, J; Wu, H; Sun, W H; Jiang, Z; Xue, S; Chen, J; Chen, W; Xia, Lifang; Zhou, Xu; Ma, Jun; Wu, Hong; Sun, Wei-Hsin; Jiang, Zhaoji; Xue, Suijian; Chen, Jiansheng; Chen, Wenping

2002-01-01T23:59:59.000Z

8

Remote multi-color excitation using femtosecond propagating surface  

E-Print Network [OSTI]

Remote multi-color excitation using femtosecond propagating surface plasmon polaritons in gold away from a micrometer sized focused laser spot. We attribute the observed remote nonlinear signal of unwanted heating effects at the target site and represents an attractive approach for surface

Potma, Eric Olaf

9

Monolithic multi-color light emission/detection device  

SciTech Connect (OSTI)

A single-crystal, monolithic, tandem, multi-color optical transceiver device is described, including (a) an InP substrate having upper and lower surfaces, (b) a first junction on the upper surface of the InP substrate, (c) a second junction on the first junction. The first junction is preferably GaInAsP of defined composition, and the second junction is preferably InP. The two junctions are lattice matched. The second junction has a larger energy band gap than the first junction. Additional junctions having successively larger energy band gaps may be included. The device is capable of simultaneous and distinct multi-color emission and detection over a single optical fiber.

Wanlass, Mark W. (Golden, CO)

1995-01-01T23:59:59.000Z

10

Monolithic multi-color light emission/detection device  

SciTech Connect (OSTI)

A single-crystal, monolithic, tandem, multi-color optical transceiver device is described, including (a) an InP substrate having upper and lower surfaces, (b) a first junction on the upper surface of the InP substrate, (c) a second junction on the first junction. The first junction is preferably GaInAsP of defined composition, and the second junction is preferably InP. The two junctions are lattice matched. The second junction has a larger energy band gap than the first junction. Additional junctions having successively larger energy band gaps may be included. The device is capable of simultaneous and distinct multi-color emission and detection over a single optical fiber. 5 figs.

Wanlass, M.W.

1995-02-21T23:59:59.000Z

11

Temperature measurements using multicolor pyrometry in thermal radiation heating environments  

SciTech Connect (OSTI)

Temperature measurements are important for thermal-structural experiments in the thermal radiation heating environments such as used for thermal-structural stress analyses. This paper describes the use of multicolor pyrometry for the measurements of diffuse surfaces in thermal radiation environments that eliminates the effects of background radiation reflections and unknown emissivities based on a least-squares algorithm. The near-infrared multicolor pyrometer had a spectral range of 1100–2400 nm, spectrum resolution of 6 nm, maximum sampling frequency of 2 kHz, working distance of 0.6 m to infinity, temperature range of 700–1700 K. The pyrometer wavelength response, nonlinear intensity response, and spectral response were all calibrated. The temperature of a graphite sample irradiated by quartz lamps was then measured during heating and cooling using the least-squares algorithm based on the calibrated irradiation data. The experiments show that higher temperatures and longer wavelengths are more suitable for the thermal measurements in the quartz lamp radiation heating system. This analysis provides a valuable method for temperature measurements of diffuse surfaces in thermal radiation environments.

Fu, Tairan, E-mail: trfu@mail.tsinghua.edu.cn [Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084 (China) [Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084 (China); Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Beijing 100084 (China); Liu, Jiangfan; Duan, Minghao; Zong, Anzhou [Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084 (China)] [Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084 (China)

2014-04-15T23:59:59.000Z

12

Uncooled infrared photon detector and multicolor infrared detection using microoptomechanical sensors  

DOE Patents [OSTI]

Systems and methods for infrared detection are described. An optomechanical photon detector includes a semiconductor material and is based on measurement of a photoinduced lattice strain. A multicolor infrared sensor includes a stack of frequency specific optomechanical detectors. The stack can include one, or more, of the optomechanical photon detectors that function based on the measurement of photoinduced lattice strain. The systems and methods provide advantages in that rapid, sensitive multicolor infrared imaging can be performed without the need for a cooling subsystem.

Datskos, Panagiotis G. (Knoxville, TN); Rajic, Solobodan (Knoxville, TN); Datskou, Irene C. (Knoxville, TN)

1999-01-01T23:59:59.000Z

13

Star Formation in Disk Galaxies. III. Does stellar feedback result in cloud death?  

E-Print Network [OSTI]

Stellar feedback, star formation and gravitational interactions are major controlling forces in the evolution of Giant Molecular Clouds (GMCs). To explore their relative roles, we examine the properties and evolution of GMCs forming in an isolated galactic disk simulation that includes both localised thermal feedback and photoelectric heating. The results are compared with the three previous simulations in this series which consists of a model with no star formation, star formation but no form of feedback and star formation with photoelectric heating in a set with steadily increasing physical effects. We find that the addition of localised thermal feedback greatly suppresses star formation but does not destroy the surrounding GMC, giving cloud properties closely resembling the run in which no stellar physics is included. The outflows from the feedback reduce the mass of the cloud but do not destroy it, allowing the cloud to survive its stellar children. This suggests that weak thermal feedback such as the low...

Tasker, Elizabeth J; Pudritz, Ralph

2015-01-01T23:59:59.000Z

14

ESO Imaging Survey IV. Exploring the EIS Multicolor Data  

E-Print Network [OSTI]

This paper presents preliminary lists of potentially interesting point-like sources extracted from multicolor data obtained for a 1.7 square degree region near the South Galactic Pole. The region has been covered by the ESO Imaging Survey (EIS) in B, V,I, and offers a unique combination of area and depth.These lists, containing a total of 330 objects nearly all brighter than I~21.5, over 1.27 square degrees (after removing some bad regions), are by-products of the process of verification and quality control of the object catalogs being produced. Among the color selected targets are candidate very low mass stars/brown dwarfs (54), white-dwarfs (32), and quasars (244). In addition, a probable fast moving asteroid was identified. The objects presented here are natural candidates for follow-up spectroscopic observations and illustrate the usefulness of the EIS data for a broad range of science and for providing possible samples for the first year of the VLT.

S. Zaggia; I. Hook; R. Mendez; L. da Costa; L. F. Olsen; M. Nonino; A. Wicenec; C. Benoist; E. Bertin; E. Deul; T. Erben; M. D. Guarnieri; R. Hook; I. Prandoni; M. Scodeggio; R. Slijkhuis; R. Wichmann

1998-07-15T23:59:59.000Z

15

Overexpression of Active Aurora-C Kinase Results in Cell Transformation and Tumour Formation  

E-Print Network [OSTI]

Overexpression of Active Aurora-C Kinase Results in Cell Transformation and Tumour Formation Jabbar, IFR140, Rennes, France Abstract Aurora kinases belong to a conserved family of serine/threonine kinases key regulators of cell cycle progression. Aurora-A and Aurora-B are expressed in somatic cells

Boyer, Edmond

16

A multi-color fast-switching microfluidic droplet dye laser Sindy K. Y. Tang,a  

E-Print Network [OSTI]

A multi-color fast-switching microfluidic droplet dye laser Sindy K. Y. Tang,a Zhenyu Li,b Adam R DOI: 10.1039/b914066b We describe a multi-color microfluidic dye laser operating in whis- pering gallery mode based on a train of alternating droplets con- taining solutions of different dyes; this laser

Prentiss, Mara

17

Large-Field Multicolor Study of Abell 168 Subclusters, Dynamics and Luminosity Functions  

E-Print Network [OSTI]

This paper presents a multicolor study of the nearby cluster of galaxies Abell 168 (z=0.045) with 13 intermediate-band filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) filter system. After a cross-identification between the photometric data obtained from the BATC and the Sloan Digital Sky Survey (SDSS), a catalog containing 1553 galaxies down to r'<20.0 mag is achieved, which includes 121 spectroscopically confirmed member galaxies. The technique of photometric redshift has been applied to all these galaxies with combined 18-band (13 from BATC and 5 from SDSS) spectral energy distributions (SEDs), in order to perform a faint membership selection in Abell 168. As a result, 255 galaxies are newly selected as the member candidates. Based on the enlarged sample of cluster galaxies, the spatial distribution and dynamics of Abell 168 are investigated. In the light of the spatial distribution of the member galaxies and the 0.2-3.5 keV X-ray image by Einstein observatory, it seems that Abell 168 consists o...

Yang, Y; Yuan, Q; Jiang, Z; Ma, J; Wu, H; Chen, J; Yang, Yanbin; Zhou, Xu; Yuan, Qirong; Jiang, Zhaoji; Ma, Jun; Wu, Hong; Chen, Jiansheng

2004-01-01T23:59:59.000Z

18

Star Formation at Redshift One: Preliminary results from an H-alpha Survey  

E-Print Network [OSTI]

We present the first successful demonstration of multi-object near-infrared spectroscopy on high redshift galaxies. Our objective is to address the true star formation history of the universe at z~1, a crucial epoch which some have suggested is the peak of star formation activity. By using H-alpha -the same robust star formation indicator used at low-z - redshifted into the J- and H-bands, we can trace star formation without the systematic uncertainties of different calibrators, or the extreme dust extinction in the rest-UV, which have plagued previous efforts. We are using the instrument CIRPASS (the Cambridge Infra-Red PAnoramic Survey Spectrograph), in multi-object mode, which has been successfully demonstrated on the Anglo-Australian Telescope (AAT) and the William Herschel Telescope (WHT). CIRPASS has 150 fibres deployable over \\~40arcmin on the AAT and ~15arcmin on the WHT. Here we present preliminary results from one of our fields observed with the WHT: H-alpha detections of z~1 galaxies in the Hubble Deep Field North.

M. Doherty; A. Bunker; R. Sharp; G. Dalton; I. Parry; I. Lewis; E. MacDonald; C. Wolf

2004-07-12T23:59:59.000Z

19

Rollable multicolor display using electrically induced blueshift of a cholesteric reactive mesogen mixture  

E-Print Network [OSTI]

Rollable multicolor display using electrically induced blueshift of a cholesteric reactive mesogen September 2006 Electrically controllable blueshift of the reflection band in a planar cholesteric reactive mesogen cell is observed. The responsible mechanism is electric-field-induced Helfrich deformation J. Chem

Wu, Shin-Tson

20

New Result Formats on OpenEI | OpenEI Community  

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 Home Page on Office of InspectorConcentrating Solar Powerstories onFocus AreaDataBusPFAN) | OpenInc Jump to:JumpNew Result Formats

Note: This page contains sample records for the topic "multicolor result formats" 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

4.1: Rollable Reflective Multicolor Cholesteric Displays Haiqing Xianyu, Tsung-Hsien Lin, and Shin-Tson Wu  

E-Print Network [OSTI]

reactive mesogen and none reactive cholesteric liquid crystal is observed. The electrically undulated display application. Blue Shift in Cholesteric Reactive Mesogen The electrically controllable blue shift: A rollable reflective multicolor display using an electrically tunable blue shift of both cholesteric

Wu, Shin-Tson

22

E-Print Network 3.0 - alloy formation process Sample Search Results  

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

that formation of eutectic alloys, along with the gold... investigation of stage of the formation of eutectic alloys in Si-Au and Si-Al systems *B. Bokhonov , M... microscopic...

23

E-Print Network 3.0 - array format 20khz Sample Search Results  

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

3 Computation Visualization Summary: . . . . . . . . . . . . . . . . . . 6 Version 5 MATLAB Array Data Element Formats . . . .10 Numeric Array and Character Array Data... Element...

24

Spectral Energy Distributions of M81 Globular Clusters in BATC Multicolor Survey  

E-Print Network [OSTI]

In this paper, we give the spectral energy distributions of 42 M81 globular clusters in 13 intermediate-band filters from 4000 to 10000 A, using the CCD images of M81 observed as part of the BATC multicolor survey of the Sky. The BATC multicolor filter system is specifically designed to exclude most of the bright and variable night-sky emission lines including the OH forest. Hence, it can present accurate SEDs of the observed objects. These spectral energy distributions are low-resolution spectra, and can reflect the stellar populations of the globular clusters. This paper confirms the conclusions of Schroder et al. that, M81 contains clusters as young as a few Gyrs, which also were observed in both M31 and M33

Ma, J; Chen, J; Jiang, Z; Wu, J; Zhang, T; Zhou, X; Burstein, David; Chen, Jiansheng; Jiang, Zhaoji; Ma, Jun; Wu, Jianghua; Zhang, Tianmen; Zhou, Xu

2005-01-01T23:59:59.000Z

25

E-Print Network 3.0 - academic team formation Sample Search Results  

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

forward completely plausible explanations... of teams and their formation. The works of Phillip Cohen and Hector Levesque have been very influential... and therefore will receive...

26

E-Print Network 3.0 - abscess gas formation Sample Search Results  

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

if there is evidence of intestinal obstruction, abscess formation, perforation, fis... -old white woman with a history of gas- trointestinal problems presented with ab-...

27

E-Print Network 3.0 - air toxics formation Sample Search Results  

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

Sciences and Ecology 40 Substance and perceptions of environmental impacts of Summary: dioxins in the feed and to minimizase formation on cooling. MACT: Air Pollution Control...

28

E-Print Network 3.0 - als promote formation Sample Search Results  

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

of Root Hair Initiation and Expansin Gene Summary: al., 1995). However, the role of ethylene in root hair formation is questioned be- cause the ethylene... as they negatively...

29

Numerical Modeling of CO2 Sequestration in Geologic Formations - Recent Results and Open Challenges  

E-Print Network [OSTI]

developed for oil and gas reservoirs, and for vadose zoneor depleting oil and gas reservoirs, unmineable coal seams,formations. While oil and gas reservoirs may provide some

Pruess, Karsten

2006-01-01T23:59:59.000Z

30

The Conditions for Star Formation at Low Metallicity: Results from the LMC  

E-Print Network [OSTI]

Abstract. We present our recent work on the conditions under which star formation occurs in a metal-poor environment, the Large Magellanic Cloud ([Fe/H] ? ?0.4). Water masers are used as beacons of the current star formation in Hii regions. Comparing their location with the dust morphology imaged with the Spitzer Space Telescope, and additional H? imaging and groundbased near-infrared observations, we conclude that the LMC environment seems favourable to sequential star formation triggered by massive star feedback (Oliveira et al. 2006). Good examples of this are 30 Doradus and N 113. There are also Hii regions, such as N 105A, where feedback may not be responsible for the current star formation although the nature of one young stellar object (YSO) suggests that feedback may soon start making an impact. The chemistry in one YSO hints at a stronger influence from irradiation effects in a metal-poor environment where shielding by dust is suppressed (van Loon 2005).

B. G. Elmegreen; J. Palous; J. M. Oliveira; J. Th Van Loon; Stanimirovi? S

2006-01-01T23:59:59.000Z

31

Molecular cytogenetic analysis of human blastocysts andcytotrophoblasts by multi-color FISH and Spectra Imaging analyses  

SciTech Connect (OSTI)

Numerical chromosome aberrations in gametes typically lead to failed fertilization, spontaneous abortion or a chromosomally abnormal fetus. By means of preimplantation genetic diagnosis (PGD), we now can screen human embryos in vitro for aneuploidy before transferring the embryos to the uterus. PGD allows us to select unaffected embryos for transfer and increases the implantation rate in in vitro fertilization programs. Molecular cytogenetic analyses using multi-color fluorescence in situ hybridization (FISH) of blastomeres have become the major tool for preimplantation genetic screening of aneuploidy. However, current FISH technology can test for only a small number of chromosome abnormalities and hitherto failed to increase the pregnancy rates as expected. We are in the process of developing technologies to score all 24 chromosomes in single cells within a 3 day time limit, which we believe is vital to the clinical setting. Also, human placental cytotrophoblasts (CTBs) at the fetal-maternal interface acquire aneuploidies as they differentiate to an invasive phenotype. About 20-50% of invasive CTB cells from uncomplicated pregnancies were found aneuploidy, suggesting that the acquisition of aneuploidy is an important component of normal placentation, perhaps limiting the proliferative and invasive potential of CTBs. Since most invasive CTBs are interphase cells and possess extreme heterogeneity, we applied multi-color FISH and repeated hybridizations to investigate individual CTBs. In summary, this study demonstrates the strength of Spectral Imaging analysis and repeated hybridizations, which provides a basis for full karyotype analysis of single interphase cells.

Weier, Jingly F.; Ferlatte, Christy; Baumgartner, Adolf; Jung,Christine J.; Nguyen, Ha-Nam; Chu, Lisa W.; Pedersen, Roger A.; Fisher,Susan J.; Weier, Heinz-Ulrich G.

2006-02-08T23:59:59.000Z

32

Multicolor photometry of 145 of the HII regions in M33  

E-Print Network [OSTI]

This paper is the first in a series presenting CCD multicolor photometry for 145 HII regions, selected from 369 candidate regions from Boulesteix et al. (1974), in the nearby spiral galaxy M33. The observations, which covered the whole area of M33, were carried out by the Beijing Astronomical Observatory 60/90 cm Schmidt Telescope, in 13 intermediate-band filters, covering a range of wavelength from 3800 to 10000 A. This provides a series of maps which can be converted to a multicolor map of M33, in pixels of 1.7''*1.7''. Using aperture photometry we obtain the spectral energy distributions (SEDs) for these HII regions. We also give their identification charts. Using the relationship between the BATC intermediate-band system used for the observations and the UBVRI broad-band system, the magnitudes in the B and V bands are then derived. Histograms of the magnitudes in V and in B-V are plotted, and the color-magnitude diagram is also given. The distribution of magnitudes in the V band shows that the apparent ma...

Jiang, L; Zhou, X; Chen, J; Wu, H; Jiang, Z; Xue, S; Zhu, J; Jiang, Linhua; Ma, Jun; Zhou, Xu; Chen, Jiansheng; Wu, Hong; Jiang, Zhaoji; Xue, Suijian; Zhu, Jin

2002-01-01T23:59:59.000Z

33

NEPHELINE FORMATION STUDY FOR SLUDGE BATCH 4: PHASE 3 EXPERIMENTAL RESULTS  

SciTech Connect (OSTI)

This Phase 3 study was undertaken to complement the previous phases of the nepheline formation studies1, 2 by continuing the investigation into the ability of the nepheline discriminator to predict the occurrence of nepheline crystallization in Sludge Batch 4 (SB4) glasses and into the impact of such phases on the durability of the SB4 glasses. The Phase 3 study had two primary objectives. The first was to continue to demonstrate the ability of the discriminator value to adequately predict the nepheline formation potential for specific glass systems of interest. The second was to generate additional data that have a high probability of supporting the SB4 variability study. To support these two objectives, sixteen glasses were selected based on the most recent SB4 compositional projection, Case 15C Blend 1.3 Four different frits were included, based on previous assessments of projected operating windows and melt rate,4, 5 with four WLs selected for each frit. Eight of these frit-sludge combinations covered WLs which tightly bound the nepheline discriminator value of 0.62, with the intent of refining this value to a level of confidence where it can be incorporated into offline administrative controls and/or the Process Composition Control System (PCCS) to support Slurry Mix Evaporator (SME) acceptability decisions. The remaining eight frit-sludge combinations targeted lower WLs (35 and 40%) and were prepared and analyzed to contribute needed data to the ComPro database6 to support a potential variability study for SB4.

Fox, K

2006-05-01T23:59:59.000Z

34

Multicolor Infrared Observations of SN 2006aj, the Supernova Associated with XRF 060218 - Paper I  

E-Print Network [OSTI]

We report simultaneous multicolor near-infrared (NIR) observations of the supernova associated with x-ray Flash 060218 during the first 16 days after the high energy event. We find that the light curve rises and peaks relatively fast compared to other SN Ic, with the characteristic broad NIR peak seen in all three bands. We find that the rise profile before the peak is largely independent of NIR wavelength, each band appearing to transition into a plateau phase around day 10--13. Since the light curve is in the plateau phase when our observations end at day 16, we can only place limits on the peak absolute magnitudes, but we estimate that SN 2006aj is one of the lowest NIR luminosity XRF/GRB associated SNe observed to date. The broad peaks observed in the {\\em JHK$_s$} bands point to a large increase in the NIR contribution of the total flux output from days 10--16. This evolution can be seen in the broad color and SED diagrams constructed using {\\em UBVRIJHK$_s$} monochromatic flux measurements for the first...

Kocevski, D; Bloom, J S; Foley, R; Starr, D; Blake, C H; Wood-Vasey, M; Falco, E E; Butler, N R; Skrutskie, M F; Szentgyorgyi, A; Kocevski, Daniel; Modjaz, Maryam; Bloom, Joshua S.; Foley, Ryan; Starr, Daniel; Blake, Cullen H.; Wood-Vasey, Michael; Falco, Emilio E.; Butler, Nathaniel R.; Skrutskie, Mike; Szentgyorgyi, Andrew

2006-01-01T23:59:59.000Z

35

MoO3 as combined hole injection layer and tapered spacer in combinatorial multicolor microcavity organic light emitting diodes  

SciTech Connect (OSTI)

Multicolor microcavity ({mu}C) organic light-emitting diode (OLED) arrays were fabricated simply by controlling the hole injection and spacer MoO{sub 3} layer thickness. The normal emission was tunable from {approx}490 to 640 nm and can be further expanded. A compact, integrated spectrometer with two-dimensional combinatorial arrays of {mu}C OLEDs was realized. The MoO{sub 3} yields more efficient and stable devices, revealing a new breakdown mechanism. The pixel current density reaches {approx}4 A/cm{sup 2} and a maximal normal brightness {approx}140 000 Cd/m{sup 2}, which improves photoluminescence-based sensing and absorption measurements.

Liu, R.; Xu, Chun; Biswas, Rana; Shinar, Joseph; Shinar, Ruth

2011-09-01T23:59:59.000Z

36

COS DCE BOOT FSW v1.13 Component Test Results Requirement 5.2.1.1 Error-Detecting Command Format  

E-Print Network [OSTI]

COS DCE BOOT FSW v1.13 Component Test Results Requirement 5.2.1.1 Error-Detecting Command Format. Brownsberger 2-13-01 The Center for Astrophysics and Space Astronomy Reviewed: Approved: COS DCE BOOT FSW v1 Astronomy Initial Release COS DCE BOOT FSW v1.13 Component Test Results Requirement 5.2.1.1 Error

Colorado at Boulder, University of

37

COS DCE BOOT FSW v1.09 Component Test Results Requirement 5.2.1.1 Error-Detecting Command Format  

E-Print Network [OSTI]

COS DCE BOOT FSW v1.09 Component Test Results Requirement 5.2.1.1 Error-Detecting Command Format. Brownsberger 2-13-01 The Center for Astrophysics and Space Astronomy Reviewed: Approved: COS DCE BOOT FSW v1 Astronomy Initial Release COS DCE BOOT FSW v1.09 Component Test Results Requirement 5.2.1.1 Error

Colorado at Boulder, University of

38

COS DCE BOOT FSW v1.13 Component Test Results Requirement 5.1.2.5a HST Error Format  

E-Print Network [OSTI]

COS DCE BOOT FSW v1.13 Component Test Results Requirement 5.1.2.5a HST Error Format Date: February for Astrophysics and Space Astronomy Reviewed: Approved: COS DCE BOOT FSW v1.13 Component Test Results Requirement-03-0054 February 13, 2001 Center for Astrophysics & Space Astronomy Initial Release COS DCE BOOT FSW

Colorado at Boulder, University of

39

Laplacian Growth I: Finger Competition and Formation of a Single Saffman-Taylor Finger without Surface Tension: An Exact Result  

E-Print Network [OSTI]

We study the exact non-singular zero-surface tension solutions of the Saffman-Taylor problem for all times. We show that all moving logarithmic singularities a_k(t) in the complex plane \\omega = e^{i\\phi}, where \\phi is the stream function, are repelled from the origin, attracted to the unit circle and eventually coalesce. This pole evolution describes essentially all the dynamical features of viscous fingering in the Hele-Shaw cell observed by Saffman and Taylor [Proc. R. Soc. A 245, 312 (1958)], namely tip-splitting, multi-finger competition, inverse cascade, and subsequent formation of a single Saffman-Taylor finger.

Mark Mineev-Weinstein; Oleg Kupervasser

2014-03-24T23:59:59.000Z

40

E-Print Network 3.0 - asians Sample Search Results  

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

larinsizeandshapetothe adult. The Multi-Colored Asian Lady... Beetle Harmonia axyridis Pallas The multi-colored Asian lady beetle is a native of Asia and is relatively... .Russell...

Note: This page contains sample records for the topic "multicolor result formats" 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

E-Print Network 3.0 - asian small felid Sample Search Results  

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

larinsizeandshapetothe adult. The Multi-Colored Asian Lady... Beetle Harmonia axyridis Pallas The multi-colored ... Source: Landis, Doug - Department of Entomology, Michigan State...

42

Reactive mercury in the troposphere: Model formation and results for Florida, the northeastern United States, and the Atlantic Ocean  

E-Print Network [OSTI]

; published 11 December 2007. [1] We describe the development of a model for transport and photochemistry Atlantic Ocean and Gulf of Mexico, and comparison with aircraft- based measurements in Florida. The model photochemically and correlate in regions dominated by direct emissions. Model results also suggest positive

Sillman, Sanford

43

SUPERNOVA EXPLOSIONS OF SUPER-ASYMPTOTIC GIANT BRANCH STARS: MULTICOLOR LIGHT CURVES OF ELECTRON-CAPTURE SUPERNOVAE  

SciTech Connect (OSTI)

An electron-capture supernova (ECSN) is a core-collapse supernova (CCSN) explosion of a super-asymptotic giant branch (SAGB) star with a main-sequence mass M{sub MS} {approx} 7-9.5 M{sub Sun }. The explosion takes place in accordance with core bounce and subsequent neutrino heating and is a unique example successfully produced by first-principle simulations. This allows us to derive a first self-consistent multicolor light curve of a CCSN. Adopting the explosion properties derived by the first-principle simulation, i.e., the low explosion energy of 1.5 Multiplication-Sign 10{sup 50} erg and the small {sup 56}Ni mass of 2.5 Multiplication-Sign 10{sup -3} M{sub Sun }, we perform a multi-group radiation hydrodynamics calculation of ECSNe and present multicolor light curves of ECSNe of SAGB stars with various envelope masses and hydrogen abundances. We demonstrate that a shock breakout has a peak luminosity of L {approx} 2 Multiplication-Sign 10{sup 44} erg s{sup -1} and can evaporate circumstellar dust up to R {approx} 10{sup 17} cm for the case of carbon dust, that the plateau luminosity and plateau duration of ECSNe are L {approx} 10{sup 42} erg s{sup -1} and t {approx} 60-100 days, respectively, and that a plateau is followed by a tail with a luminosity drop by {approx}4 mag. The ECSN shows a bright and short plateau that is as bright as typical Type II plateau supernovae, and a faint tail that might be influenced by the spin-down luminosity of a newborn pulsar. Furthermore, the theoretical models are compared with ECSN candidates: SN 1054 and SN 2008S. We find that SN 1054 shares the characteristics of the ECSNe. For SN 2008S, we find that its faint plateau requires an ECSN model with a significantly low explosion energy of E {approx} 10{sup 48} erg.

Tominaga, Nozomu [Department of Physics, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Kobe, Hyogo 658-8501 (Japan); Blinnikov, Sergei I. [Institute for Theoretical and Experimental Physics (ITEP), Moscow 117218 (Russian Federation); Nomoto, Ken'ichi, E-mail: tominaga@konan-u.ac.jp, E-mail: Sergei.Blinnikov@itep.ru, E-mail: nomoto@astron.s.u-tokyo.ac.jp [Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan)

2013-07-01T23:59:59.000Z

44

Depositional and dissolutional processes and their resulting thinning patterns within the Middle Devonian Prairie Formation, Williston basin, North Dakota and Montana  

SciTech Connect (OSTI)

Within the Williston basin, thickness variations of the Prairie Formation are common and are interpreted to originate by two processes: differential accumulation of salt during deposition and differential removal of salt by dissolution. Unambiguous evidence for each process is rare because the Prairie/Winnipegosis interval is seldom cored within the US portion of the basin. Therefore, indirect methods, using well logs, provide the principal method for identifying characteristics of the two processes. The results of this study indicate that the two processes can be distinguished using correlations within the Prairie Formation. Several regionally correlative brining-upward and probably shoaling-upward sequences occur within the Prairie Formation. Near the basin center, the lowermost sequence is transitional with the underlying Winnipegosis Formation. This transition is characterized by thinly laminated basal carbonates that become increasingly interbedded with anhydrites of the basin-centered Ratner member. The remainder of the sequence progresses up through halite and culminates in the halite-dominated Esterhazy potash beds. Two overlying sequences also brine upward; however, these sequences lack the basal anhydrite and instead begin with halite and culminate in the Belle Plaine and Mountrail potash members, respectively. A fourth sequence is indicated by several feet of halite capping the Mountrail member in some parts of the basin. Subsequent erosion or dissolution prior to burial may have removed the upper portion of this sequence. Cross sections show that the lower Prairie gradually decreases in thickness from the basin to its margins. This thickens variation is most simply explained by decreasing accommodation potential due to decreased basin topography away from the basin depocenter and by depositional onlap of the Prairie toward the basin margins.

Oglesby, C.A.

1988-07-01T23:59:59.000Z

45

The Recent Cluster Formation Histories of NGC 5253 and NGC 3077: Environmental Impact on Star Formation  

E-Print Network [OSTI]

We present multicolor photometry of bright star cluster candidates in the nearby starburst galaxies NGC 3077 and NGC 5253, observed with the Hubble Space Telescope Wide Field and Planetary Camera 2 in both broadband (F300W, F547M and F814W) and narrowband (F487N and F656N) filters. By comparing the photometry with theoretical population synthesis models, we estimate the age and mass of each star cluster, which provides constraints on the recent star formation histories of the host galaxies. We compare the star cluster populations in these dwarf starburst galaxies to those of the nuclear starburst in the barred spiral M 83, and discuss implications for our understanding of the nature and evolution of starburst events.

J. Harris; D. Calzetti; J. S. Gallagher III; D. A. Smith; C. J. Conselice

2003-11-20T23:59:59.000Z

46

The Recent Cluster Formation Histories of NGC 5253 and NGC 3077: Environmental Impact on Star Formation  

E-Print Network [OSTI]

We present multicolor photometry of bright star cluster candidates in the nearby starburst galaxies NGC 3077 and NGC 5253, observed with the Hubble Space Telescope Wide Field and Planetary Camera 2 in both broadband (F300W, F547M and F814W) and narrowband (F487N and F656N) filters. By comparing the photometry with theoretical population synthesis models, we estimate the age and mass of each star cluster, which provides constraints on the recent star formation histories of the host galaxies. We compare the star cluster populations in these dwarf starburst galaxies to those of the nuclear starburst in the barred spiral M 83, and discuss implications for our understanding of the nature and evolution of starburst events.

Harris, J; Smith, D A; Conselice, C J

2004-01-01T23:59:59.000Z

47

Luminosity Functions And Evolution Of Blue Galaxies In A Deep Multicolor CCD Field Survey  

E-Print Network [OSTI]

A complete sample of 659 field galaxies with 17.0$Green 1998). Total number counts of the galaxies in the U-band give a count slope d(logN)/dM = 0.55 $\\pm$ 0.05, consistent with previous studies. The 545 galaxies in the sample classified as spectral type Sbc or bluer are analyzed for signs of evolution with redshift, and for unusual star formation histories. The U-band luminosity function of these blue galaxies at 0.02$energy distributions indicating strong starburst activity, is observed at z$\\gtrsim$0.3 but not at z$<$0.3. This population is confirmed via spectroscopy of part of the sample. These may be galaxies temporarily brightened by global starbursts, which subsequently fade and redden at lower redshifts.

Charles T. Liu; Richard F. Green; Patrick B. Hall; Patrick S. Osmer

1998-06-02T23:59:59.000Z

48

The VMC Survey - XIV. First results on the look-back time star-formation rate tomography of the Small Magellanic Cloud  

E-Print Network [OSTI]

We analyse deep images from the VISTA survey of the Magellanic Clouds in the YJKs filters, covering 14 sqrdeg (10 tiles), split into 120 subregions, and comprising the main body and Wing of the Small Magellanic Cloud (SMC). We apply a colour--magnitude diagram reconstruction method that returns their best-fitting star formation rate SFR(t), age-metallicity relation (AMR), distance and mean reddening, together with 68% confidence intervals. The distance data can be approximated by a plane tilted in the East-West direction with a mean inclination of 39 deg, although deviations of up to 3 kpc suggest a distorted and warped disk. After assigning to every observed star a probability of belonging to a given age-metallicity interval, we build high-resolution population maps. These dramatically reveal the flocculent nature of the young star-forming regions and the nearly smooth features traced by older stellar generations. They document the formation of the SMC Wing at ages <0.2 Gyr and the peak of star formation ...

Rubele, Stefano; Kerber, Leandro; Cioni, Maria-Rosa L; Piatti, Andres E; Zaggia, Simone; Bekki, Kenji; Bressan, Alessandro; Clementini, Gisella; de Grijs, Richard; Emerson, Jim P; Groenewegen, Martin A T; Ivanov, Valentin D; Marconi, Marcella; Marigo, Paola; Moretti, Maria-Ida; Ripepi, Vincenzo; Subramanian, Smitha; Tatton, Benjamin L; van Loon, Jacco Th

2015-01-01T23:59:59.000Z

49

E-Print Network 3.0 - asian longhorned beetle Sample Search Results  

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

A good bug with some bad habits The multi-colored Asian lady beetle (Harmonia axyridis Pallas) is a native of Asia and is relatively new Summary: The Multi-Colored Asian Lady...

50

E-Print Network 3.0 - alaskan beetle upis Sample Search Results  

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

A good bug with some bad habits The multi-colored Asian lady beetle (Harmonia axyridis Pallas) is a native of Asia and is relatively new Summary: The Multi-Colored Asian Lady...

51

Distinguishing triplet energy transfer and trap-assisted recombination in multi-color organic light-emitting diode with an ultrathin phosphorescent emissive layer  

SciTech Connect (OSTI)

An ultrathin layer of deep-red phosphorescent emitter tris(1-phenylisoquinoline) iridium (III) (Ir(piq){sub 3}) is inserted within different positions of the electron blocking layer fac-tris (1-phenylpyrazolato-N,C{sup 2?})-iridium(III) (Ir(ppz){sub 3}) to distinguish the contribution of the emission from the triplet exciton energy transfer/diffusion from the adjacent blue phosphorescent emitter and the trap-assisted recombination from the narrow band-gap emitter itself. The charge trapping effect of the narrow band-gap deep-red emitter which forms a quantum-well-like structure also plays a role in shaping the electroluminescent characteristics of multi-color organic light-emitting diodes. By accurately controlling the position of the ultrathin sensing layer, it is considerably easy to balance the white emission which is quite challenging for full-color devices with multiple emission zones. There is nearly no energy transfer detectable if 7 nm thick Ir(ppz){sub 3} is inserted between the blue phosphorescent emitter and the ultrathin red emitter.

Xue, Qin, E-mail: xueqin19851202@163.com; Liu, Shouyin [Department of Physical Science and Technology, Central China Normal University, Wuhan 430079 (China); Xie, Guohua; Chen, Ping; Zhao, Yi; Liu, Shiyong [State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012 (China)

2014-03-21T23:59:59.000Z

52

result formats | OpenEI Community  

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 Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey Flatshydro Home Water Homerequest for

53

OpenEI Community - result formats  

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'sOklahoma/Geothermal < Oklahomast,

54

Mixed-mode diesel HCCI with External Mixture Formation: Preliminary...  

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

Mixed-mode diesel HCCI with External Mixture Formation: Preliminary Results Mixed-mode diesel HCCI with External Mixture Formation: Preliminary Results 2003 DEER Conference...

55

Utility Formation  

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-4500II Field EmissionFunctional MaterialsRobertUtility-Formation

56

multicolor | OpenEI Community  

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 Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey Flatshydro Home Water Powerlaunchmulticolor Home

57

Star Formation and Galaxy Environment  

E-Print Network [OSTI]

The dependence of star formation rate on galaxian environment is a key issue in the understanding of galaxy formation and evolution. However, the study of this subject is complex and observationally challenging. This paper reviews some of the current results, drawing mostly from recent large redshift surveys such the LCRS, the MORPH collaboration, and the CNOC1 and CNOC2 redshift surveys.

H. K. C. Yee

2000-04-05T23:59:59.000Z

58

Method of fracturing a geological formation  

DOE Patents [OSTI]

An improved method of fracturing a geological formation surrounding a well bore is disclosed. A relatively small explosive charge is emplaced in a well bore and the bore is subsequently hydraulically pressurized to a pressure less than the formation breakdown pressure and preferably greater than the fracture propagation pressure of the formation. The charge is denoted while the bore is so pressurized, resulting in the formation of multiple fractures in the surrounding formation with little or no accompanying formation damage. Subsequent hydraulic pressurization can be used to propagate and extend the fractures in a conventional manner. The method is useful for stimulating production of oil, gas and possibly water from suitable geologic formations.

Johnson, James O. (2679-B Walnut, Los Alamos, NM 87544)

1990-01-01T23:59:59.000Z

59

Isolating Triggered Star Formation  

SciTech Connect (OSTI)

Galaxy pairs provide a potentially powerful means of studying triggered star formation from galaxy interactions. We use a large cosmological N-body simulation coupled with a well-tested semi-analytic substructure model to demonstrate that the majority of galaxies in close pairs reside within cluster or group-size halos and therefore represent a biased population, poorly suited for direct comparison to 'field' galaxies. Thus, the frequent observation that some types of galaxies in pairs have redder colors than 'field' galaxies is primarily a selection effect. We use our simulations to devise a means to select galaxy pairs that are isolated in their dark matter halos with respect to other massive subhalos (N= 2 halos) and to select a control sample of isolated galaxies (N= 1 halos) for comparison. We then apply these selection criteria to a volume-limited subset of the 2dF Galaxy Redshift Survey with M{sub B,j} {le} -19 and obtain the first clean measure of the typical fraction of galaxies affected by triggered star formation and the average elevation in the star formation rate. We find that 24% (30.5 %) of these L* and sub-L* galaxies in isolated 50 (30) h{sup -1} kpc pairs exhibit star formation that is boosted by a factor of {approx}> 5 above their average past value, while only 10% of isolated galaxies in the control sample show this level of enhancement. Thus, 14% (20 %) of the galaxies in these close pairs show clear triggered star formation. Our orbit models suggest that 12% (16%) of 50 (30) h{sup -1} kpc close pairs that are isolated according to our definition have had a close ({le} 30 h{sup -1} kpc) pass within the last Gyr. Thus, the data are broadly consistent with a scenario in which most or all close passes of isolated pairs result in triggered star formation. The isolation criteria we develop provide a means to constrain star formation and feedback prescriptions in hydrodynamic simulations and a very general method of understanding the importance of triggered star formation in a cosmological context.

Barton, Elizabeth J.; Arnold, Jacob A.; /UC, Irvine; Zentner, Andrew R.; /KICP, Chicago /Chicago U., EFI; Bullock, James S.; /UC, Irvine; Wechsler, Risa H.; /KIPAC, Menlo

2007-09-12T23:59:59.000Z

60

SAR polar format implementation with MATLAB.  

SciTech Connect (OSTI)

Traditional polar format image formation for Synthetic Aperture Radar (SAR) requires a large amount of processing power and memory in order to accomplish in real-time. These requirements can thus eliminate the possible usage of interpreted language environments such as MATLAB. However, with trapezoidal aperture phase history collection and changes to the traditional polar format algorithm, certain optimizations make MATLAB a possible tool for image formation. Thus, this document's purpose is two-fold. The first outlines a change to the existing Polar Format MATLAB implementation utilizing the Chirp Z-Transform that improves performance and memory usage achieving near realtime results for smaller apertures. The second is the addition of two new possible image formation options that perform a more traditional interpolation style image formation. These options allow the continued exploration of possible interpolation methods for image formation and some preliminary results comparing image quality are given.

Martin, Grant D.; Doerry, Armin Walter

2005-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

Formatted: Footer, Left Formatted: Font: 10 pt  

E-Print Network [OSTI]

Formatted: Space Before: 12 pt, Border: Bottom: (Single solid line, Auto, 0.5 pt Line width) Deleted: Angelis ­ Sacramento Municipal Utility District Anne Gillette ­ California Public Utilities Commission Steven Kelly

62

Heating tar sands formations to visbreaking temperatures  

DOE Patents [OSTI]

Methods for treating a tar sands formation are described herein. Methods may include heating at least a section of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. The heat may be controlled so that at least a majority of the section reaches an average temperature of between 200.degree. C. and 240.degree. C., which results in visbreaking of at least some hydrocarbons in the section. At least some visbroken hydrocarbon fluids may be produced from the formation.

Karanikas, John Michael (Houston, TX); Colmenares, Tulio Rafael (Houston, TX); Zhang, Etuan (Houston, TX); Marino, Marian (Houston, TX); Roes, Augustinus Wilhelmus Maria (Houston, TX); Ryan, Robert Charles (Houston, TX); Beer, Gary Lee (Houston, TX); Dombrowski, Robert James (Houston, TX); Jaiswal, Namit (Houston, TX)

2009-12-22T23:59:59.000Z

63

Kinetic models of opinion formation  

E-Print Network [OSTI]

We introduce and discuss certain kinetic models of (continuous) opinion formation involving both exchange of opinion between individual agents and diffusion of information. We show conditions which ensure that the kinetic model reaches non trivial stationary states in case of lack of diffusion in correspondence of some opinion point. Analytical results are then obtained by considering a suitable asymptotic limit of the model yielding a Fokker-Planck equation for the distribution of opinion among individuals.

G. Toscani

2006-05-17T23:59:59.000Z

64

Sequentially Triggered Star Formation in OB Associations  

E-Print Network [OSTI]

We discuss observational evidence for sequential and triggered star formation in OB associations. We first review the star formation process in the Scorpius-Centaurus OB association, the nearest OB association to the Sun, where several recent extensive studies have allowed us to reconstruct the star formation history in a rather detailed way. We then compare the observational results with those obtained for other OB associations and with recent models of rapid cloud and star formation in the turbulent interstellar medium. We conclude that the formation of whole OB subgroups (each consisting of several thousand stars) requires large-scale triggering mechanisms such as shocks from expanding wind and supernova driven superbubbles surrounding older subgroups. Other triggering mechanisms, like radiatively driven implosion of globules, also operate, but seem to be secondary processes, forming only small stellar groups rather than whole OB subgroups with thousands of stars.

Thomas Preibisch; Hans Zinnecker

2006-10-27T23:59:59.000Z

65

Formation of polar ring galaxies  

E-Print Network [OSTI]

Polar ring galaxies are peculiar systems in which a gas rich, nearly polar ring surrounds an early-type or elliptical host galaxy. Two formation scenarios for these objects have been proposed: they are thought to form either in major galaxy mergers or by tidal accretion of the polar material from a gas rich donor galaxy. Both scenarios are studied through N-body simulations including gas dynamics and star formation. Constraints on physical parameters are drawn out, in order to determine which scenario is the most likely to occur. Polar ring galaxies from each scenario are compared with observations and we discuss whether the accretion scenario and the merging scenario account for observational properties of polar ring galaxies. The conclusion of this study is that the accretion scenario is both the most likely and the most supported by observations. Even if the merging scenario is rather robust, most polar ring galaxies are shown to be the result of tidal gas accretion events.

F. Bournaud; F. Combes

2003-02-04T23:59:59.000Z

66

Rapid gas hydrate formation process  

DOE Patents [OSTI]

The disclosure provides a method and apparatus for forming gas hydrates from a two-phase mixture of water and a hydrate forming gas. The two-phase mixture is created in a mixing zone which may be wholly included within the body of a spray nozzle. The two-phase mixture is subsequently sprayed into a reaction zone, where the reaction zone is under pressure and temperature conditions suitable for formation of the gas hydrate. The reaction zone pressure is less than the mixing zone pressure so that expansion of the hydrate-forming gas in the mixture provides a degree of cooling by the Joule-Thompson effect and provides more intimate mixing between the water and the hydrate-forming gas. The result of the process is the formation of gas hydrates continuously and with a greatly reduced induction time. An apparatus for conduct of the method is further provided.

Brown, Thomas D.; Taylor, Charles E.; Unione, Alfred J.

2013-01-15T23:59:59.000Z

67

The Star Formation History of NGC 6822  

E-Print Network [OSTI]

Images of five fields in the Local Group dwarf irregular galaxy NGC 6822 obtained with the {\\it Hubble Space Telescope} in the F555W and F814W filters are presented. Photometry for the stars in these images was extracted using the Point-Spread-Function fitting program HSTPHOT/MULTIPHOT. The resulting color-magnitude diagrams reach down to $V\\approx26$, a level well below the red clump, and were used to solve quantitatively for the star formation history of NGC 6822. Assuming that stars began forming in this galaxy from low-metallicity gas and that there is little variation in the metallicity at each age, the distribution of stars along the red giant branch is best fit with star formation beginning in NGC 6822 12-15 Gyr ago. The best-fitting star formation histories for the old and intermediate age stars are similar among the five fields and show a constant or somewhat increasing star formation rate from 15 Gyr ago to the present except for a possible dip in the star formation rate from 3 to 5 Gyr ago. The main differences among the five fields are in the higher overall star formation rate per area in the bar fields as well as in the ratio of the recent star formation rate to the average past rate. These variations in the recent star formation rate imply that stars formed within the past 0.6 Gyr are not spatially very well mixed throughout the galaxy.

Ted K. Wyder

2001-07-31T23:59:59.000Z

68

The Formation of the Hubble Sequence  

E-Print Network [OSTI]

The history of galaxy formation via star formation and stellar mass assembly rates is now known with some certainty, yet the connection between high redshift and low redshift galaxy populations is not yet clear. By identifying and studying individual massive galaxies at high-redshifts, z > 1.5, we can possibly uncover the physical effects driving galaxy formation. Using the structures of high-z galaxies, as imaged with the Hubble Space Telescope, we argue that it is now possible to directly study the progenitors of ellipticals and disks. We also briefly describe early results that suggest many massive galaxies are forming at z > 2 through major mergers.

Christopher J. Conselice

2003-12-12T23:59:59.000Z

69

SUPPORTING INFORMATION Multicolored vertical silicon nanowires  

E-Print Network [OSTI]

. The nanowires have radii of about 50 nm and are 1 µm long. Light from a Xe arc lamp was focused into an optical on the single crystalline silicon wafer. Inductively coupled plasma- reactive ion etch (STS) was used

70

Observing Massive Galaxy Formation  

E-Print Network [OSTI]

A major goal of contemporary astrophysics is understanding the origin of the most massive galaxies in the universe, particularly nearby ellipticals and spirals. Theoretical models of galaxy formation have existed for many decades, although low and high redshift observations are only beginning to put constraints on different ideas. We briefly describe these observations and how they are revealing the methods by which galaxies form by contrasting and comparing fiducial rapid collapse and hierarchical formation model predictions. The available data show that cluster ellipticals must have rapidly formed at z > 2, and that up to 50% of all massive galaxies at z ~ 2.5 are involved in major mergers. While the former is consistent with the monolithic collapse picture, we argue that hierarchal formation is the only model that can reproduce all the available observations.

Christopher J. Conselice

2002-12-20T23:59:59.000Z

71

JPEG File Interchange Format  

E-Print Network [OSTI]

interchange format compressed image representation • PC or Mac or Unix workstation compatible • Standard color space: one or three components. For three components, YCbCr (CCIR 601-256 levels) • APP0 marker used to specify Units, X pixel density, Y pixel... by the Macintosh but not by PCs or workstations. JPEG File Interchange Format, Version 1.02 2 Standard color space The color space to be used is YCbCr as defined by CCIR 601 (256 levels). The RGB components calculated by linear conversion from YCbCr shall...

Hamilton, Eric

2004-03-30T23:59:59.000Z

72

Gas Cooling Through Galaxy Formations  

E-Print Network [OSTI]

Abstract-- Gas cooling was studied in two different boxes of sizes and by simulation at same redshifts. The gas cooling is shown in four different redshifts (z=1.15, 0.5, 0.1 and 0). In the simulation the positions of the clumps of cooled gas were studied with slices of the two volumes and also the density of cooled gas of the two volumes shown in the simulation. From the process of gas cooling it is clear that this process gives different results in the two cases. Index Term- Gas Cooling, Simulation, galaxy Formation. I.

Mariwan A. Rasheed; Mohamad A. Brza

73

Introduction Format Proprietaire -Standard  

E-Print Network [OSTI]

Code for Information Interchange) 4. Unicode IFT-1215 Stefan Monnier 7 #12;BCD IFT-1215 Stefan MonnierSOMMAIRE Introduction Format Propri´etaire -Standard Code Alphanum´erique Entr´ee Alphanum : !, ?, ", (, . . . · Caract`eres sp´eciaux : *, $, ¿, . . . Quelques standards utilis´es pour les coder en binaires 1. BCD

Monnier, Stefan

74

Hair follicle Formation of  

E-Print Network [OSTI]

Hair follicle Formation of new follicles Bud Healed skin Hair bulge Open wound Epidermis a b Dermis 1950s and help to explain the controversy. What is the origin of the cells that make up these new hair follicles? Are they derived from existing hair follicles located at the wound edge

Chuong, Cheng-Ming

75

(Non) formation of methanol by direct hydrogenation of formate on copper catalysts  

SciTech Connect (OSTI)

We have attempted to hydrogenate adsorbed formate species on copper catalysts to probe the importance of this postulated mechanistic step in methanol synthesis. Surface formate coverages up to 0.25 were produced at temperatures between 413K and 453K on supported (Cu/SiO2) copper and unsupported copper catalysts. The adlayers were produced by various methods including (1) steady state catalytic conditions in CO2-H2 (3:1, 6 bar) atmospheres, and (2) by exposure of the catalysts to formic acid. As reported in earlier work, the catalytic surface at steady state contains bidentate formate species with coverages up to saturation levels of ~ 0.25 at the low temperatures of this study. The reactivity of these formate adlayers was investigated at relevant reaction temperatures in atmospheres containing up to 6 bar H2 partial pressure by simultaneous mass spectrometry (MS) and infrared (IR) spectroscopy measurements. The yield of methanol during the attempted hydrogenation (“titration”) of these adlayers was insignificant (<0.2 mol % of the formate adlayer) even in dry hydrogen partial pressures up to 6 bar. Hydrogen titration of formate species produced from formic acid also failed to produce significant quantities of methanol, and attempted titration in gases consisting of CO-hydrogen mixtures or dry CO2 were also unproductive. The formate decomposition kinetics, measured by IR, were also unaffected by these changes in the gas composition. Similar experiments on unsupported copper also failed to show any methanol. From these results, we conclude that methanol synthesis on copper cannot result from the direct hydrogenation of (bidentate) formate species in simple steps involving adsorbed H species alone. Furthermore, experiments performed on both supported (Cu/SiO2) and unsupported copper catalysts gave similar results implying that the methanol synthesis reaction mechanism only involves metal surface chemistry. Pre-exposure of the bidentate formate adlayer to oxidation by O2 or N2O produces a change to a monodentate configuration. Attempted titration of this monodentate formate/O coadsorbed layer in dry hydrogen produces significant quantities of methanol, although decomposition of formate to carbon dioxide and hydrogen remains the dominant reaction pathway. Simultaneous production of water is also observed during this titration as the copper surface is re-reduced. These results indicate that co-adsorbates related to surface oxygen or water-derived species may be critical to methanol production on copper, perhaps assisting in the hydrogenation of adsorbed formate to adsorbed methoxyl.

Yang, Yong; Mims, Charles A.; Disselkamp, Robert S.; Kwak, Ja Hun; Peden, Charles HF; Campbell, C. T.

2010-10-14T23:59:59.000Z

76

Star formation bursts in isolated spiral galaxies  

E-Print Network [OSTI]

We study the response of the gaseous component of a galactic disc to the time dependent potential generated by N-body simulations of a spiral galaxy. The results show significant variation of the spiral structure of the gas which might be expected to result in significant fluctuations in the Star Formation Rate (SFR). Pronounced local variations of the SFR are anticipated in all cases. Bursty histories for the global SFR, however, require that the mean surface density is much less (around an order of magnitude less) than the putative threshold for star formation. We thus suggest that bursty star formation histories, normally attributed to mergers and/or tidal interactions, may be a normal pattern for gas poor isolated spiral galaxies.

C. Clarke; D. Gittins

2006-07-03T23:59:59.000Z

77

Formation of Carbon Dwarfs  

E-Print Network [OSTI]

We consider the formation of dwarf carbon stars via accretion from a carbon AGB companion in light of the new 107 object sample of Downes et al. (2004). This sample is now large enough to allow good mass determination via comparison of a composite spectrum to theoretical atmospheric models. Carbon dwarfs of spectral type M are indeed main sequence M dwarfs with enhanced metallicity and carbon abundance. We also calculate the predicted abundance of both M and of F/G carbon dwarfs, and show that the latter should be falsifiable in the near future.

Charles L. Steinhardt; Dimitar D. Sasselov

2012-01-27T23:59:59.000Z

78

Level Diagram Format Choice  

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: VegetationEquipment Surfaces and Interfaces Sample6, 2011 LawrenceE C HLester toRecalcitrantWhich format

79

Planning and Search Exam format  

E-Print Network [OSTI]

is the frame problem. Revision 5 #12;Exam topics: planning Classical planning. How the problem definitionPlanning and Search Revision Revision 1 #12;Outline Exam format Exam topics How to revise Revision 2 #12;Exam format 4 questions out of 6 same format as 2010-2011 and 2011-2012 exams (on G52PAS

Alechina, Natasha

80

Stellar Content and Star Formation Histories  

E-Print Network [OSTI]

The evolution of irregular galaxies is examined from two points of view: on the one hand, models of galactic chemical evolution have been computed and their predictions compared with the corresponding observational data on the element abundances, and on the other hand, the results of a new method to derive the star formation history in the last 1 Gyr in nearby irregulars are presented.

M. Tosi

1993-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

The dynamics of fragment formation  

SciTech Connect (OSTI)

We demonstrate that in the Quantum Molecular Dynamics model, dynamical correlations can result in the production rate for final state nucleon clusters (and hence composite fragments) being higher than would be expected if statistics and the available phase space were dominant in determining composite formation. An intranuclear cascade or a Boltzmann-Uehling-Uhlenbeck model, combined with a statistical approach in the late stage of the collision to determine composites, provides an equivalent description only under limited conditions of centrality and beam energy. We use data on participant fragment production in Au + Au collisions in the Bevalac`s BOS time projection chamber to map out the parameter space where statistical clustering provides a good description. In particular, we investigate momentum-space densities of fragments up to {sup 4}He as a function of fragment transverse momentum, azimuth relative to the reaction plane, rapidity, multiplicity and beam energy.

Keane, D. [Kent State Univ., OH (United States); EOS Collaboration

1994-09-01T23:59:59.000Z

82

Formation, characterization and reactivity of adsorbed oxygen...  

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

Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Abstract: The formation...

83

Galaxy formation with radiative and chemical feedback  

E-Print Network [OSTI]

Here we introduce GAMESH, a novel pipeline which implements self-consistent radiative and chemical feedback in a computational model of galaxy formation. By combining the cosmological chemical-evolution model GAMETE with the radiative transfer code CRASH, GAMESH can post process realistic outputs of a N-body simulation describing the redshift evolution of the forming galaxy. After introducing the GAMESH implementation and its features, we apply the code to a low-resolution N-body simulation of the Milky Way formation and we investigate the combined effects of self-consistent radiative and chemical feedback. Many physical properties, which can be directly compared with observations in the Galaxy and its surrounding satellites, are predicted by the code along the merger-tree assembly. The resulting redshift evolution of the Local Group star formation rates, reionisation and metal enrichment along with the predicted Metallicity Distribution Function of halo stars are critically compared with observations. We dis...

Graziani, L; Schneider, R; Kawata, D; de Bennassuti, M; Maselli, A

2015-01-01T23:59:59.000Z

84

The Efficiency of Globular Cluster Formation  

E-Print Network [OSTI]

(Abridged): The total populations of globular cluster systems (GCSs) are discussed in terms of their connection to the efficiency of globular cluster formation---the mass fraction of star-forming gas that was able to form bound stellar clusters rather than isolated stars or unbound associations---in galaxy halos. Observed variations in GCS specific frequencies (S_N=N_gc/L_gal), both as a function of galactocentric radius in individual systems and globally between entire galaxies, are reviewed in this light. It is argued that trends in S_N do not reflect any real variation in the underlying efficiency of cluster formation; rather, they result from ignoring the hot gas in many large ellipticals. This claim is checked and confirmed in each of M87, M49, and NGC 1399, for which existing data are combined to show that the volume density profile of globular clusters, rho_cl, is directly proportional to the sum of (rho_gas+rho_stars) at large radii. The constant of proportionality is the same in each case: epsilon=0.0026 +/- 0.0005 in the mean. This is identified with the globular cluster formation efficiency. The implication that epsilon might have had a universal value is supported by data on the GCSs of 97 early-type galaxies, on the GCS of the Milky Way, and on the ongoing formation of open clusters. These results have specific implications for some issues in GCS and galaxy formation, and they should serve as a strong constraint on more general theories of star and cluster formation.

Dean E. McLaughlin

1999-01-21T23:59:59.000Z

85

(Non) formation of methanol by direct hydrogenation of formate...  

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

produces significant quantities of methanol, although decomposition of formate to carbon dioxide and hydrogen remains the dominant reaction pathway. Simultaneous production...

86

Geometric Analysis of the Formation Problem for Autonomous Robots  

E-Print Network [OSTI]

In the formation control problem for autonomous robots a distributed control law steers the robots to the desired target formation. A local stability result of the target formation can be derived by methods of linearization and center manifold theory or via a Lyapunov-based approach. It is well known that there are various other undesired invariant sets of the robots' closed-loop dynamics. This paper addresses a global stability analysis by a differential geometric approach considering invariant manifolds and their local stability properties. The theoretical results are then applied to the well-known example of a cyclic triangular formation and result in instability of all invariant sets other than the target formation.

Dorfler, Florian

2010-01-01T23:59:59.000Z

87

FORMATION GESTION DU STRESS CONTEXTE, PUBLIC, FINALITE DE LA FORMATION  

E-Print Network [OSTI]

FORMATION GESTION DU STRESS CONTEXTE, PUBLIC, FINALITE DE LA FORMATION La vie moderne et le stress : mettre en place des stratégies de gestion , étudier quelques aspects essentiels de la et cas cliniques composés par les participants ou fournis par le formateur . - Jeux de rôle en sous

Brest, Université de

88

Masers and star formation  

E-Print Network [OSTI]

Recent observational and theoretical advances concerning astronomical masers in star forming regions are reviewed. Major masing species are considered individually and in combination. Key results are summarized with emphasis on present science and future prospects.

Vincent L. Fish

2007-04-02T23:59:59.000Z

89

Treating tar sands formations with karsted zones  

DOE Patents [OSTI]

Methods for treating a tar sands formation are described herein. The tar sands formation may have one or more karsted zones. Methods may include providing heat from one or more heaters to one or more karsted zones of the tar sands formation to mobilize fluids in the formation. At least some of the mobilized fluids may be produced from the formation.

Vinegar, Harold J. (Bellaire, TX); Karanikas, John Michael (Houston, TX)

2010-03-09T23:59:59.000Z

90

Use-driven concept formation  

E-Print Network [OSTI]

When faced with a complex task, humans often identify domain-specific concepts that make the task more tractable. In this thesis, I investigate the formation of domain-specific concepts of this sort. I propose a set of ...

Roberts, Jennifer M. (Jennifer Marie)

2010-01-01T23:59:59.000Z

91

Dimensionality effects in Turing pattern formation  

E-Print Network [OSTI]

The problem of morphogenesis and Turing instability are revisited from the point of view of dimensionality effects. First the linear analysis of a generic Turing model is elaborated to the case of multiple stationary states, which may lead the system to bistability. The difference between two- and three-dimensional pattern formation with respect to pattern selection and robustness is discussed. Preliminary results concerning the transition between quasi-two-dimensional and three-dimensional structures are presented and their relation to experimental results are addressed.

Teemu Leppanen; Mikko Karttunen; Kimmo Kaski; Rafael A. Barrio

2003-06-05T23:59:59.000Z

92

Reconstructing the Star Formation Histories of Galaxies  

E-Print Network [OSTI]

We present a methodological study to find out how far back and to what precision star formation histories of galaxies can be reconstructed from CMDs, from integrated spectra and Lick indices, and from integrated multi-band photometry. Our evolutionary synthesis models GALEV allow to describe the evolution of galaxies in terms of all three approaches and we have assumed typical observational uncertainties for each of them and then investigated to what extent and accuracy different star formation histories can be discriminated. For a field in the LMC bar region with both a deep CMD from HST observations and a trailing slit spectrum across exactly the same field of view we could test our modelling results against real data.

Uta Fritze; Thomas Lilly

2007-01-15T23:59:59.000Z

93

Modelling new particle formation events in the South African savannah  

SciTech Connect (OSTI)

Africa is one of the less studied continents with respect to atmospheric aerosols. Savannahs are complex dynamic systems sensitive to climate and land-use changes, but the interaction of these systems with the atmosphere is not well understood. Atmospheric particles, called aerosols, affect the climate on regional and global scales, and are an important factor in air quality. In this study, measurements from a relatively clean savannah environment in South Africa were used to model new particle formation and growth. There already are some combined long-term measurements of trace gas concentrations together with aerosol and meteorological variables available, but to our knowledge this is the first detailed simulation that includes all the main processes relevant to particle formation. The results show that both of the particle formation mechanisms investigated overestimated the dependency of the formation rates on sulphuric acid. From the two particle formation mechanisms tested in this work, the approach that included low volatile organic compounds to the particle formation process was more accurate in describing the nucleation events than the approach that did not. To obtain a reliable estimate of aerosol concentration in simulations for larger scales, nucleation mechanisms would need to include organic compounds, at least in southern Africa. This work is the first step in developing a more comprehensive new particle formation model applicable to the unique environment in southern Africa. Such a model will assist in better understanding and predicting new particle formation – knowledge which could ultimately be used to mitigate impacts of climate change and air quality.

Gierens, Rosa; Laakso, Lauri; Mogensen, Ditte; Vakkari, Ville; Buekes, Johan P.; Van Zyl, Pieter; Hakola, H.; Guenther, Alex B.; Pienaar, J. J.; Boy, Michael

2014-05-28T23:59:59.000Z

94

Negative feedback effects on star formation history and cosmic reionization  

E-Print Network [OSTI]

After considering the effects of negative feedback on the process of star formation, we explore the relationship between star formation process and the associated feedback, by investigating how the mechanical feedback from supernovae(SNe) and radiative feedback from luminous objects regulate the star formation rate and therefore affect the cosmic reionization.Based on our present knowledge of the negative feedback theory and some numerical simulations, we construct an analytic model in the framework of the Lambda cold dark matter model. In certain parameter regions, our model can explain some observational results properly. In large halos(T_vir>10000 K), both mechanical and radiative feedback have a similar behavior: the relative strength of negative feedback reduces as the redshift decreases. In contrast, in small halos (T_virfeedback gets stronger when the redshift decreases. And the star formation rate in these small halos depends very weakly on the star-formation efficiency. Our results show that the radiative feedback is important for the early generation stars. It can suppress the star formation rate considerably. But the mechanical feedback from the SNe explosions is not able to affect the early star formation significantly. The early star formation in small-halo objects is likely to be self-regulated. The radiative and mechanical feedback dominates the star formation rate of the PopII/I stars all along. The feedback from first generation stars is very strong and should not be neglected. However, their effects on the cosmic reionization are not significant, which results in a small contribution to the optical depth of Thomson scattering.

Lei Wang; Jirong Mao; Shouping Xiang; Ye-Fei Yuan

2008-12-22T23:59:59.000Z

95

Formation of molecular hydrogen on amorphous silicate surfaces  

E-Print Network [OSTI]

Experimental results on the formation of molecular hydrogen on amorphous silicate surfaces are presented and analyzed using a rate equation model. The energy barriers for the relevant diffusion and desorption processes are obtained. They turn out to be significantly higher than those obtained for polycrystalline silicates, demonstrating the importance of grain morphology. Using these barriers we evaluate the efficiency of molecular hydrogen formation on amorphous silicate grains under interstellar conditions. It is found that unlike polycrystalline silicates, amorphous silicate grains are efficient catalysts of H_2 formation in diffuse interstellar clouds.

Ling Li; Giulio Manico; Emanuele Congiu; Joe Roser; Sol Swords; Hagai B. Perets; Adina Lederhendler; Ofer Biham; John Robert Brucato; Valerio Pirronello; Gianfranco Vidali

2007-09-16T23:59:59.000Z

96

Ice Formation in Gas-Diffusion Layers  

E-Print Network [OSTI]

the University of California. Ice Formation in Gas-Diffusionsub-freezing conditions, ice forms in the gas-diffusionstrategies exist to prevent ice formation, there is little

Dursch, Thomas

2013-01-01T23:59:59.000Z

97

Star Formation in Mergers and Interacting Galaxies: Gathering the Fuel  

E-Print Network [OSTI]

Selected results from recent studies of star formation in galaxies at different stages of interaction are reviewed. Recent results from the Spitzer Space Telescope are highlighted. Ideas on how large-scale driving of star formation in interacting galaxies might mesh with our understanding of star formation in isolated galaxies and small scale mechanisms within galaxies are considered. In particular, there is evidence that on small scales star formation is determined by the same thermal and turbulent processes in cool compressed clouds as in isolated galaxies. If so, this affirms the notion that the primary role of large-scale dynamics is to gather and compress the gas fuel. In gas-rich interactions this is generally done with increasing efficiency through the merger process.

Curtis Struck

2006-10-06T23:59:59.000Z

98

Magnetic phase formation in irradiated austenitic alloys  

SciTech Connect (OSTI)

Austenitic alloys are often observed to develop magnetic properties during irradiation, possibly associated with radiation-induced acceleration of the ferrite phase. Some of the parametric sensitivities of this phenomenon have been addressed using a series of alloys irradiated in the BOR-60 reactor at 593K. The rate of development of magnetic phase appears to be sensitive to alloy composition. To the first order, the largest sensitivities to accelerate ferrite formation, as explored in this experiment, are associated with silicon, carbon and manganese and chromium. Si, C, and Mn are thought to influence diffusion rates of point defects while Cr plays a prominent role in defining the chromium equivalent and therefore the amount of ferrite at equilibrium. Pre-irradiation cold working was found to accelerate ferrite formation, but it can play many roles including an effect on diffusion, but on the basis of these results the dominant role or roles of cold-work cannot be identified. Based on the data available, ferrite formation is most probably associated with diffusion.

Gussev, Maxim N [ORNL] [ORNL; Busby, Jeremy T [ORNL] [ORNL; Tan, Lizhen [ORNL] [ORNL; Garner, Francis A. [Radiation Effects Consulting, Richland, WA] [Radiation Effects Consulting, Richland, WA

2014-01-01T23:59:59.000Z

99

The Formation History of Globular Clusters  

E-Print Network [OSTI]

The properties of old globular cluster systems in galaxy halos are used to infer quantitative constraints on aspects of generic star (cluster) formation. First, the spatial distribution of globulars in three large galaxies, together with trends in total cluster population vs. galaxy luminosity for 97 early-type systems plus the halo of the Milky Way, imply that bound stellar clusters formed with a universal efficiency throughout early protogalaxies: by mass, always 0.26% of star-forming gas was converted into globulars rather than halo field stars. That this fraction is so robust in the face of extreme variations in local and global galaxy environment suggests that any parcel of gas needs primarily to exceed a relative density threshold in order to form a bound cluster of stars. Second, it is shown that a strict, empirical scaling of total binding energy with luminosity and Galactocentric position is a defining equation for a fundamental plane of Galactic globular clusters. The characteristics of this plane, which subsumes all other observable correlations between the structural parameters of globulars, provide a small but complete set of facts that must be explained by theories of cluster formation and evolution in the Milky Way. It is suggested that the E_b(L,r_{\\rm gc}) relation specifically resulted from star formation efficiencies having been systematically higher inside more massive protoglobular gas clumps.

Dean E. McLaughlin

2000-02-03T23:59:59.000Z

100

Examination of the Potential for Formation of Energetic Compounds in Dry Sludge  

SciTech Connect (OSTI)

This report details initial results from an investigation of the potential formation and fate of energetic compounds in Savannah River Site sludge.

Barnes, M.J.

1998-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

Physical regimes for feedback in galaxy formation  

E-Print Network [OSTI]

We present a new (semi-)analytic model for feedback in galaxy formation. The ISM is modeled as a two-phase medium in pressure equilibrium. The remnants of exploding type II SNe percolate into super-bubbles (SBs) that sweep the ISM, heating the hot phase (if the SB is adiabatic) or cooling it (in the snowplow stage, when the interior gas of the SB has cooled). The resulting feedback regimes occur in well-defined regions of the space defined by vertical scale-length and surface density of the structure. When SBs blow out in the adiabatic regime, the efficiency of SNe in heating the ISM is ~5 per cent, with \\~80 per cent of the energy budget injected into the external halo, and the outcoming ISM is self-regulated to a state similar to that found in the Milky Way. Feedback is most efficient when SBs are pressure-confined in the adiabatic regime. In some significant regions of the parameter space confinement takes place in the snowplow stage; then the hot phase has a lower temperature and star formation is quicker. In some critical cases, the hot phase is strongly depleted and the cold phase percolates the whole volume, giving rise to a sudden burst of star formation. Strong galactic winds are predicted to happen only in critical cases. This model provides a starting point for constructing a realistic grid of feedback solutions to be used in galaxy formation codes. The predictive power of this model extends to many properties of the ISM, so that most parameters can be constrained by reproducing the main properties of the Milky Way. (Abridged)

P. Monaco

2004-04-13T23:59:59.000Z

102

Hydrodynamic Simulations of Galaxy Formation  

E-Print Network [OSTI]

We have developed an accurate, one-dimensional, spherically symmetric, Lagrangian hydrodynamics/gravity code, designed to study the effects of radiative cooling and photo-ionization on the formation of protogalaxies. We examine the ability of collapsing perturbations to cool within the age of the universe. In contrast to some studies based on order-of-magnitude estimates, we find that cooling arguments alone cannot explain the sharp upper cutoff observed in the galaxy luminosity function. We also look at the effect of a photoionizing background on the formation of low-mass galaxies.

A. A. Thoul

1994-12-09T23:59:59.000Z

103

Star Formation in the Local Universe  

E-Print Network [OSTI]

We present preliminary results of a long-term study aimed at answering a number of open questions on the evolution of starbursts in local galaxies. The project employes mainly HST data from the ultraviolet to the red of the stellar continuum and of the nebular emission from the galaxies. Here we concentrate on NGC5253 and NGC5236 (M83), that form a dwarf--massive galaxy pair at about 4 Mpc distance. The recent star formation history of the centers of the two galaxies is investigated in order to identify similarities and differences in the evolution of their central starbursts.

Daniela Calzetti; Jason Harris

2001-11-28T23:59:59.000Z

104

Structurally Electromagnetic Formation Flight (EMFF)  

E-Print Network [OSTI]

Structurally connected secondary mirror EMFF secondary mirror EMFF Design Electromagnetic Formation for a smaller, simpler system. µEMFF investigates the use of conventional conductors, capacitors, and solar propellants that often limit lifetime, the EMFF system uses solar power to energize a magnetic field

de Weck, Olivier L.

105

Earth and Terrestrial Planet Formation  

E-Print Network [OSTI]

The growth and composition of Earth is a direct consequence of planet formation throughout the Solar System. We discuss the known history of the Solar System, the proposed stages of growth and how the early stages of planet formation may be dominated by pebble growth processes. Pebbles are small bodies whose strong interactions with the nebula gas lead to remarkable new accretion mechanisms for the formation of planetesimals and the growth of planetary embryos. Many of the popular models for the later stages of planet formation are presented. The classical models with the giant planets on fixed orbits are not consistent with the known history of the Solar System, fail to create a high Earth/Mars mass ratio, and, in many cases, are also internally inconsistent. The successful Grand Tack model creates a small Mars, a wet Earth, a realistic asteroid belt and the mass-orbit structure of the terrestrial planets. In the Grand Tack scenario, growth curves for Earth most closely match a Weibull model. The feeding zon...

Jacobson, Seth A

2015-01-01T23:59:59.000Z

106

Cloud Formation, Evolution and Destruction  

E-Print Network [OSTI]

Chapter 4 Cloud Formation, Evolution and Destruction We now begin to trace the journey towards a star. How long does this take? The answer is surprisingly short: a good many clouds already contain new stars and these stars tend to be young. The typical cloud cannot spend long, if any time at all

Estalella, Robert

107

VEHICLE NETWORKS: ACHIEVING REGULAR FORMATION  

E-Print Network [OSTI]

VEHICLE NETWORKS: ACHIEVING REGULAR FORMATION MADALENA CHAVES, ROBERT DAY, LUCIA GOMEZ a network of vehicles exchanging information among themselves with the intention of achieving a specified the performance of the vehicle network. A stochastic model for information flow is also considered, allowing

108

Method to inhibit deposit formation  

SciTech Connect (OSTI)

A process is described for inhibiting deposit formation on the contact surfaces of structures confining heated hydrocarbon fluid which exhibits substantial fouling. The process consists of introducing into the hydrocarbon fluid at least an inhibiting amount of thiophene-containing polycondensed aromatic/naphthenic compounds of number average molecular weight (M-bar n) from 200 to 1,000.

Dickakian, G.B.

1986-10-28T23:59:59.000Z

109

Formation,  

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

observed graphitization of nanodiamonds into multi-shell onion like carbon nano-structures, also called carbon onions, using reactive force-fields, which include...

110

Treating tar sands formations with dolomite  

DOE Patents [OSTI]

Methods for treating a tar sands formation are described herein. The tar sands formation may include dolomite and hydrocarbons. Methods may include providing heat at less than the decomposition temperature of dolomite from one or more heaters to at least a portion of the formation. At least some of the hydrocarbon fluids are mobilized in the formation. At least some of the hydrocarbon fluids may be produced from the formation.

Vinegar, Harold J.; Karanikas, John Michael

2010-06-08T23:59:59.000Z

111

Photophoresis boosts giant planet formation  

E-Print Network [OSTI]

In the core accretion model of giant planet formation, a solid protoplanetary core begins to accrete gas directly from the nebula when its mass reaches about 5 earth masses. The protoplanet has at most a few million years to reach runaway gas accretion, as young stars lose their gas disks after 10 million years at the latest. Yet gas accretion also brings small dust grains entrained in the gas into the planetary atmosphere. Dust accretion creates an optically thick protoplanetary atmosphere that cannot efficiently radiate away the kinetic energy deposited by incoming planetesimals. A dust-rich atmosphere severely slows down atmospheric cooling, contraction, and inflow of new gas, in contradiction to the observed timescales of planet formation. Here we show that photophoresis is a strong mechanism for pushing dust out of the planetary atmosphere due to the momentum exchange between gas and dust grains. The thermal radiation from the heated inner atmosphere and core is sufficient to levitate dust grains and to ...

Teiser, Jens

2013-01-01T23:59:59.000Z

112

Constraining Galaxy Formation Models with Dwarf Ellipticals in Clusters  

E-Print Network [OSTI]

Recent observations demonstrate that dwarf elliptical (dE) galaxies in clusters, despite their faintness, are likely a critical galaxy type for understanding the processes behind galaxy formation. Dwarf ellipticals are the most common galaxy type, and are particularly abundant in rich galaxy clusters. The dwarf to giant ratio is in fact highest in rich clusters of galaxies, suggesting that cluster dEs do not form in groups that later merge to form clusters. Dwarf ellipticals are potentially the only galaxy type whose formation is sensitive to global, rather than local, environment. The dominant idea for explaining the formation of these systems, through Cold Dark Matter models, is that dEs form early and within their present environments. Recent results suggest that some dwarfs appear in clusters after the bulk of massive galaxies form, a scenario not predicted in standard hierarchical structure formation models. Many dEs have younger and more metal rich stellar populations than dwarfs in lower density environments, suggesting processes induced by rich clusters play an important role in dE formation. Several general galaxy cluster observations, including steep luminosity functions, and the origin of intracluster light, are natural outcomes of this delayed formation.

Christopher J. Conselice

2005-12-20T23:59:59.000Z

113

RESIDUA UPGRADING EFFICIENCY IMPROVEMENT MODELS: COKE FORMATION PREDICTABILITY MAPS  

SciTech Connect (OSTI)

The dispersed particle solution model of petroleum residua structure was used to develop predictors for pyrolytic coke formation. Coking Indexes were developed in prior years that measure how near a pyrolysis system is to coke formation during the coke formation induction period. These have been demonstrated to be universally applicable for residua regardless of the source of the material. Coking onset is coincidental with the destruction of the ordered structure and the formation of a multiphase system. The amount of coke initially formed appears to be a function of the free solvent volume of the original residua. In the current work, three-dimensional coke make predictability maps were developed at 400 C, 450 C, and 500 C (752 F, 842 F, and 932 F). These relate residence time and free solvent volume to the amount of coke formed at a particular pyrolysis temperature. Activation energies for two apparent types of zero-order coke formation reactions were estimated. The results provide a new tool for ranking residua, gauging proximity to coke formation, and predicting initial coke make tendencies.

John F. Schabron; A. Troy Pauli; Joseph F. Rovani Jr.

2002-05-01T23:59:59.000Z

114

STAR FORMATION IN NUCLEAR RINGS OF BARRED GALAXIES  

SciTech Connect (OSTI)

Nuclear rings in barred galaxies are sites of active star formation. We use hydrodynamic simulations to study the temporal and spatial behavior of star formation occurring in nuclear rings of barred galaxies where radial gas inflows are triggered solely by a bar potential. The star formation recipes include a density threshold, an efficiency, conversion of gas to star particles, and delayed momentum feedback via supernova explosions. We find that the star formation rate (SFR) in a nuclear ring is roughly equal to the mass inflow rate to the ring, while it has a weak dependence on the total gas mass in the ring. The SFR typically exhibits a strong primary burst followed by weak secondary bursts before declining to very small values. The primary burst is associated with the rapid gas infall to the ring due to the bar growth, while the secondary bursts are caused by re-infall of the ejected gas from the primary burst. While star formation in observed rings persists episodically over a few Gyr, the duration of active star formation in our models lasts for only about half of the bar growth time, suggesting that the bar potential alone is unlikely to be responsible for gas supply to the rings. When the SFR is low, most star formation occurs at the contact points between the ring and the dust lanes, leading to an azimuthal age gradient of young star clusters. When the SFR is large, on the other hand, star formation is randomly distributed over the whole circumference of the ring, resulting in no apparent azimuthal age gradient. Since the ring shrinks in size with time, star clusters also exhibit a radial age gradient, with younger clusters found closer to the ring. The cluster mass function is well described by a power law, with a slope depending on the SFR. Giant gas clouds in the rings have supersonic internal velocity dispersions and are gravitationally bound.

Seo, Woo-Young; Kim, Woong-Tae, E-mail: seowy@astro.snu.ac.kr, E-mail: wkim@astro.snu.ac.kr [Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of)

2013-06-01T23:59:59.000Z

115

Formation damage in underbalanced drilling operations  

E-Print Network [OSTI]

Formation damage has long been recognized as a potential source of reduced productivity and injectivity in both horizontal and vertical wells. From the moment that the pay zone is being drilled until the well is put on production, a formation...

Reyes Serpa, Carlos Alberto

2003-01-01T23:59:59.000Z

116

Proportional structural effects of formative indicators  

E-Print Network [OSTI]

Formative constructs must influence two or more distinct outcome variables for meaningful tests of the formative conceptualization. Because the construct mediates the effects of its indicators, the indicators must have ...

Franke, George R.; Preacher, K. J.; Rigdon, Ed E.

2009-03-15T23:59:59.000Z

117

Structure formation: Models, Dynamics and Status  

E-Print Network [OSTI]

The constraints on the models for the structure formation arising from various cosmological observations at different length scales are reviewed. The status of different models for structure formation is examined critically in the light of these observations.

T. Padmanabhan

1995-08-25T23:59:59.000Z

118

The Formation of Primordial Luminous Objects  

SciTech Connect (OSTI)

The scientific belief that the universe evolves in time is one of the legacies of the theory of the Big Bang. The concept that the universe has an history started to attract the interest of cosmologists soon after the first formulation of the theory: already Gamow (1948; 1949) investigated how and when galaxies could have been formed in the context of the expanding Universe. However, the specific topic of the formation (and of the fate) of the first objects dates to two decades later, when no objects with metallicities as low as those predicted by primordial nucleosynthesis (Z {approx}< 10{sup -10} {approx} 10{sup -8}Z{sub {circle_dot}}) were found. Such concerns were addressed in two seminal papers by Peebles & Dicke (1968; hereafter PD68) and by Doroshkevich, Zel'Dovich & Novikov (1967; hereafter DZN67), introducing the idea that some objects could have formed before the stars we presently observe. (1) Both PD68 and DZN67 suggest a mass of {approx} 10{sup 5} M{sub {circle_dot}} for the first generation of bound systems, based on the considerations on the cosmological Jeans length (Gamow 1948; Peebles 1965) and the possible shape of the power spectrum. (2) They point out the role of thermal instabilities in the formation of the proto-galactic bound object, and of the cooling of the gas inside it; in particular, PD68 introduces H{sub 2} cooling and chemistry in the calculations about the contraction of the gas. (3) Even if they do not specifically address the occurrence of fragmentation, these papers make two very different assumptions: PD68 assumes that the gas will fragment into ''normal'' stars to form globular clusters, while DZN67 assumes that fragmentation does not occur, and that a single ''super-star'' forms. (4) Finally, some feedback effects as considered (e.g. Peebles & Dicke considered the effects of supernovae). Today most of the research focuses on the issues when fragmentation may occur, what objects are formed and how they influence subsequent structure formation. In these notes we will leave the discussion of feedback to lecture notes by Ferrara & Salvaterra and by Madau & Haardt in this same book and focus only on the aspects of the formation of the first objects. The advent of cosmological numerical hydrodynamics in particular allow a fresh new look at these questions. Hence, these notes will touch on aspects of theoretical cosmology to chemistry, computer science, hydrodynamics and atomic physics. For further reading and more references on the subject we refer the reader to other relevant reviews such as Barkana & Loeb 2001, and more recently Ciardi & Ferrara 2004, Glover 2004 and Bromm & Larson 2004. In these notes, we try to give a brief introduction to only the most relevant aspects. We will start with a brief overview of the relevant cosmological concepts in section 2, followed by a discussion of the properties of primordial material (with particular emphasis to its cooling and its chemistry) in section 3. We will then review the technique and the results of numerical simulations in sections 4 and 5: the former will deal with detailed 3D simulations of the formation of gaseous clouds which are likely to transform into luminous objects, while the latter will examine results (mostly from 1D codes) about the modalities of such transformation. Finally, in section 6 we will critically discuss the results of the previous sections, examining their consequences and comparing them to our present knowledge of the universe.

Ripamonti, Emanuele; /Kapteyn Astron. Inst., Groningen; Abel, Tom; /KIPAC, Menlo Park

2005-08-04T23:59:59.000Z

119

Kinetics and morphology of erbium silicide formation  

SciTech Connect (OSTI)

The growth kinetics and surface morphology of erbium silicide formation from Er layers on Si(100) substrates are examined using both fast e-beam annealing and furnace annealing. Very smooth erbium silicide layers have been grown using a line-source e beam to heat and react the Er overlayers with the substrate. This contrasts to the severe pitting observed when Er layers are reacted with Si in conventional furnace annealing. The pitting phenomenon can be explained by a thin contaminant layer at the interface between Er and Si. Our results suggest the contamination barrier is not due to oxygen, as usually assumed, but may be related to the presence of carbon. Rapid e-beam heating to reaction temperatures of approx.1200 K permits dispersion of the barrier layer before substantial silicide growth can occur, allowing smooth silicide growth. Heating to shorter times to just disperse the interface barrier allows uniform layer growth by subsequent furnace annealing and has permitted measurement of the kinetics of erbium silicide formation on crystalline Si. The reaction obeys (time)/sup 1//sup ///sup 2/ kinetics but is shown to be not totally diffusion limited by the ability to sustain multiple interface growth from a single Si source. The growth rates are nearly an order of magnitude slower for the Er/Si(100) interface than for the Er/amorphous-Si, but with a similar activation energy near 1.75 eV in both cases.

Knapp, J.A.; Picraux, S.T.; Wu, C.S.; Lau, S.S.

1985-11-15T23:59:59.000Z

120

Pattern formation and propagation during microwave breakdown  

SciTech Connect (OSTI)

During microwave breakdown at atmospheric pressure, a sharp plasma front forms and propagates toward the microwave source at high velocities. Experiments show that the plasma front may exhibit a complex dynamical structure or pattern composed of plasma filaments aligned with the wave electric field and apparently moving toward the source. In this paper, we present a model of the pattern formation and propagation under conditions close to recent experiments. Maxwell's equations are solved together with plasma fluid equations in two dimensions to describe the space and time evolution of the wave field and plasma density. The simulation results are in excellent agreement with the experimental observations. The model provides a physical interpretation of the pattern formation and dynamics in terms of ionization-diffusion and absorption-reflection mechanisms. The simulations allow a good qualitative and quantitative understanding of different features such as plasma front velocity, spacing between filaments, maximum plasma density in the filaments, and influence of the discharge parameters on the development of well-defined filamentary plasma arrays or more diffuse plasma fronts.

Chaudhury, Bhaskar [Laboratoire Plasma et Conversion d'Energie (LAPLACE), INPT, UPS, Universite de Toulouse, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France); Boeuf, Jean-Pierre [Laboratoire Plasma et Conversion d'Energie (LAPLACE), INPT, UPS, Universite de Toulouse, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France); LAPLACE, CNRS, F-31062 Toulouse (France); Zhu, Guo Qiang [Laboratoire Plasma et Conversion d'Energie (LAPLACE), INPT, UPS, Universite de Toulouse, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France); Northwestern Polytechnique University, Xi'an 710072 (China)

2010-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

Magnetic Fields in Population III Star Formation  

SciTech Connect (OSTI)

We study the buildup of magnetic fields during the formation of Population III star-forming regions, by conducting cosmological simulations from realistic initial conditions and varying the Jeans resolution. To investigate this in detail, we start simulations from identical initial conditions, mandating 16, 32 and 64 zones per Jeans length, and studied the variation in their magnetic field amplification. We find that, while compression results in some amplification, turbulent velocity fluctuations driven by the collapse can further amplify an initially weak seed field via dynamo action, provided there is sufficient numerical resolution to capture vortical motions (we find this requirement to be 64 zones per Jeans length, slightly larger than, but consistent with previous work run with more idealized collapse scenarios). We explore saturation of amplification of the magnetic field, which could potentially become dynamically important in subsequent, fully-resolved calculations. We have also identified a relatively surprising phenomena that is purely hydrodynamic: the higher-resolved simulations possess substantially different characteristics, including higher infall-velocity, increased temperatures inside 1000 AU, and decreased molecular hydrogen content in the innermost region. Furthermore, we find that disk formation is suppressed in higher-resolution calculations, at least at the times that we can follow the calculation. We discuss the effect this may have on the buildup of disks over the accretion history of the first clump to form as well as the potential for gravitational instabilities to develop and induce fragmentation.

Turk, Matthew J.; Oishi, Jeffrey S.; Abel, Tom; Bryan, Greg

2012-02-22T23:59:59.000Z

122

Treating nahcolite containing formations and saline zones  

DOE Patents [OSTI]

A method for treating a nahcolite containing subsurface formation includes removing water from a saline zone in or near the formation. The removed water is heated using a steam and electricity cogeneration facility. The heated water is provided to the nahcolite containing formation. A fluid is produced from the nahcolite containing formation. The fluid includes at least some dissolved nahcolite. At least some of the fluid is provided to the saline zone.

Vinegar, Harold J

2013-06-11T23:59:59.000Z

123

Petrophysical evaluation of subterranean formations  

DOE Patents [OSTI]

Methods and systems are provided for evaluating petrophysical properties of subterranean formations and comprehensively evaluating hydrate presence through a combination of computer-implemented log modeling and analysis. Certain embodiments include the steps of running a number of logging tools in a wellbore to obtain a variety of wellbore data and logs, and evaluating and modeling the log data to ascertain various petrophysical properties. Examples of suitable logging techniques that may be used in combination with the present invention include, but are not limited to, sonic logs, electrical resistivity logs, gamma ray logs, neutron porosity logs, density logs, NRM logs, or any combination or subset thereof.

Klein, James D; Schoderbek, David A; Mailloux, Jason M

2013-05-28T23:59:59.000Z

124

Format for Federal Register Notice  

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: AlternativeEnvironment, Safety and HealthDepartmentFindings of NoFleetFood andDepartment ofFormat

125

Electrochemical formation of field emitters  

DOE Patents [OSTI]

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area.

Bernhardt, Anthony F. (Berkeley, CA)

1999-01-01T23:59:59.000Z

126

Autonomous Helicopter Formation using Model Predictive Control  

E-Print Network [OSTI]

Autonomous Helicopter Formation using Model Predictive Control Hoam Chung and S. Shankar Sastry are required to fly in tight formations and under harsh conditions. The starting point for safe autonomous into a formation, so that each vehicle can safely maintain sufficient space between it and all other vehicles

Sastry, S. Shankar

127

Electromagnetic Formation Flight of Satellite Arrays  

E-Print Network [OSTI]

Electromagnetic Formation Flight of Satellite Arrays Daniel W. Kwon and David W. Miller February 2005 SSL # 2-05 #12;#12;Electromagnetic Formation Flight of Satellite Arrays By DANIEL W. KWON S;#12;Electromagnetic Formation Flight of Satellite Arrays by DANIEL W. KWON Submitted to the Department of Aeronautics

128

Coring in deep hardrock formations  

SciTech Connect (OSTI)

The United States Department of Energy is involved in a variety of scientific and engineering feasibility studies requiring extensive drilling in hard crystalline rock. In many cases well depths extend from 6000 to 20,000 feet in high-temperature, granitic formations. Examples of such projects are the Hot Dry Rock well system at Fenton Hill, New Mexico and the planned exploratory magma well near Mammoth Lakes, California. In addition to these programs, there is also continuing interest in supporting programs to reduce drilling costs associated with the production of geothermal energy from underground sources such as the Geysers area near San Francisco, California. The overall progression in these efforts is to drill deeper holes in higher temperature, harder formations. In conjunction with this trend is a desire to improve the capability to recover geological information. Spot coring and continuous coring are important elements in this effort. It is the purpose of this report to examine the current methods used to obtain core from deep wells and to suggest projects which will improve existing capabilities. 28 refs., 8 figs., 2 tabs.

Drumheller, D.S.

1988-08-01T23:59:59.000Z

129

Heating tar sands formations while controlling pressure  

DOE Patents [OSTI]

Methods for treating a tar sands formation are described herein. Methods may include heating at least a section of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. A pressure in the majority of the section may be maintained below a fracture pressure of the formation. The pressure in the majority of the section may be reduced to a selected pressure after the average temperature reaches a temperature that is above 240.degree. C. and is at or below pyrolysis temperatures of hydrocarbons in the section. At least some hydrocarbon fluids may be produced from the formation.

Stegemeier, George Leo (Houston, TX) [Houston, TX; Beer, Gary Lee (Houston, TX) [Houston, TX; Zhang, Etuan (Houston, TX) [Houston, TX

2010-01-12T23:59:59.000Z

130

The Star Formation Density at z=7  

E-Print Network [OSTI]

Near-infrared VLT data of the GOODS-South area were used to look for galaxies at z=7 down to a limiting magnitude of (J+Ks)AB=25.5. No high-redshift candidates were detected, and this provides clear evidence for a strong evolution of the luminosity function between z=6 and z=7, i.e. over a time interval of only 170 Myr. Our constraints provide evidence of a significant decline in the total star formation rate at z=7, which must be less than 40% of that at z=3 and 40-80% of that at z=6. The resulting upper limit to the ionizing flux at z=7 is only marginally consistent with what is required to completely ionize the Universe.

F. Mannucci

2006-11-29T23:59:59.000Z

131

Mental Representations Formed From Educational Website Formats  

SciTech Connect (OSTI)

The increasing popularity of web-based distance education places high demand on distance educators to format web pages to facilitate learning. However, limited guidelines exist regarding appropriate writing styles for web-based distance education. This study investigated the effect of four different writing styles on reader’s mental representation of hypertext. Participants studied hypertext written in one of four web-writing styles (e.g., concise, scannable, objective, and combined) and were then administered a cued association task intended to measure their mental representations of the hypertext. It is hypothesized that the scannable and combined styles will bias readers to scan rather than elaborately read, which may result in less dense mental representations (as identified through Pathfinder analysis) relative to the objective and concise writing styles. Further, the use of more descriptors in the objective writing style will lead to better integration of ideas and more dense mental representations than the concise writing style.

Elizabeth T. Cady; Kimberly R. Raddatz; Tuan Q. Tran; Bernardo de la Garza; Peter D. Elgin

2006-10-01T23:59:59.000Z

132

Evaluation of the Azinomycin B Biosynthetic Pathway: The Azabicycle Formation  

E-Print Network [OSTI]

purified AziC3, AziC4, AziC5 and AziC6 ..... 30 Figure 19 The formation of hydroxamate-Fe3+ complex by AziC3 .......................... 31 Figure 20 Result of hydroxylamine assay by AziC3 ................................................. 31 Figure... 26 The proposed mechanistic scheme of the aziridine ring formation .......... 45 Figure 27 SDS-PAGE of insoluble proteins AziH1 and AziH2 and purified AziH3 47 Appendix Figure 1 Amino acid sequence alignment of AziC2 with LysX homologs 60...

Lee, Rachel Pokei

2014-01-02T23:59:59.000Z

133

A Hybrid N-body--Coagulation Code for Planet Formation  

E-Print Network [OSTI]

We describe a hybrid algorithm to calculate the formation of planets from an initial ensemble of planetesimals. The algorithm uses a coagulation code to treat the growth of planetesimals into oligarchs and explicit N-body calculations to follow the evolution of oligarchs into planets. To validate the N-body portion of the algorithm, we use a battery of tests in planetary dynamics. Several complete calculations of terrestrial planet formation with the hybrid code yield good agreement with previously published calculations. These results demonstrate that the hybrid code provides an accurate treatment of the evolution of planetesimals into planets.

Benjamin C. Bromley; Scott J. Kenyon

2006-02-15T23:59:59.000Z

134

A Random Walk through Star and Planet Formation  

E-Print Network [OSTI]

and its Neptune-Mass Planet 3.1 Introduction . . . . . . .of Low Mass Star Formation . . . . . 1.3 Planet FormationConstraining Theories of Planet Formation and Evolution .

Maness, Holly

2010-01-01T23:59:59.000Z

135

Zonal Flow as Pattern Formation  

E-Print Network [OSTI]

In this section, we examine the transition from statistically homogeneous turbulence to inhomogeneous turbulence with zonal flows. Statistical equations of motion can be derived from the quasilinear approximation to the Hasegawa-Mima equation. We review recent work that finds a bifurcation of these equations and shows that the emergence of zonal flows mathematically follows a standard type of pattern formation. We also show that the dispersion relation of modulational instability can be extracted from the statistical equations of motion in a certain limit. The statistical formulation can thus be thought to offer a more general perspective on growth of coherent structures, namely through instability of a full turbulent spectrum. Finally, we offer a physical perspective on the growth of large-scale structures.

Parker, Jeffrey B

2015-01-01T23:59:59.000Z

136

Adaptive Optics in Star Formation  

E-Print Network [OSTI]

Over the past ten years, the concept of adaptive optics has evolved from early experimental stages to a standard observing tool now available at almost all major optical and near-infrared telescope facilities. Adaptive optics will also be essential in exploiting the full potential of the large optical/infrared interferometers currently under construction. Both observations with high-angular resolution and at high contrast, and with a high point source sensitivity are facilitated by adaptive optics. Among the areas which benefit most from the use of adaptive optics are studies of the circumstellar environment (envelopes, disks, outflows), substellar companions and multiple systems, and dense young stellar populations. This contribution highlights some of the recent advances in star formation studies facilitated by adaptive optics, and gives a brief tutorial on optimized observing and data reduction strategies.

Wolfgang Brandner

2003-09-29T23:59:59.000Z

137

Electrochemical formation of field emitters  

DOE Patents [OSTI]

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays is disclosed. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area. 12 figs.

Bernhardt, A.F.

1999-03-16T23:59:59.000Z

138

X-pinch dynamics: Neck formation and implosion  

SciTech Connect (OSTI)

We propose a model that describes the neck formation and implosion in an X-pinch. The process is simulated to go in two stages. The first stage is neck formation. This stage begins with an electrical explosion of the wires forming the X-pinch, and at the end of the stage, a micropinch (neck) is formed in the region where the wires are crossed. The second stage is neck implosion. The implosion is accompanied by outflow of matter from the neck region, resulting in the formation of a “hot spot”. Analytical estimates obtained in the study under consideration indicate that these stages are approximately equal in duration. Having analyzed the neck implosion dynamics, we have verified a scaling which makes it possible to explain the observed dependences of the time of occurrence of an x-ray pulse on the X-pinch current and mass.

Oreshkin, V. I. [Institute of High Current Electronics, SB, RAS, 2/3 Akademichesky Ave., Tomsk 634055 (Russian Federation); National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk 634050 (Russian Federation); Chaikovsky, S. A. [Institute of High Current Electronics, SB, RAS, 2/3 Akademichesky Ave., Tomsk 634055 (Russian Federation); Lebedev Physical Institute, RAS, 53 Leninsky Ave., Moscow 119991 (Russian Federation); Artyomov, A. P.; Labetskaya, N. A.; Fedunin, A. V.; Rousskikh, A. G.; Zhigalin, A. S. [Institute of High Current Electronics, SB, RAS, 2/3 Akademichesky Ave., Tomsk 634055 (Russian Federation)

2014-10-15T23:59:59.000Z

139

The Formation of a Bubble from a Submerged Orifice  

E-Print Network [OSTI]

The formation of a single bubble from an orifice in a solid surface, submerged in an in- compressible, viscous Newtonian liquid, is simulated. The finite element method is used to capture the multiscale physics associated with the problem and to track the evolution of the free surface explicitly. The results are compared to a recent experimental analysis and then used to obtain the global characteristics of the process, the formation time and volume of the bubble, for a range of orifice radii; Ohnesorge numbers, which combine the material parameters of the liquid; and volumetric gas flow rates. These benchmark calculations, for the parameter space of interest, are then utilised to validate a selection of scaling laws found in the literature for two regimes of bubble formation, the regimes of low and high gas flow rates.

Simmons, Jonathan A; Shikhmurzaev, Yulii D

2015-01-01T23:59:59.000Z

140

Coke formation during pyrolysis of 1,2-dichloroethane  

SciTech Connect (OSTI)

Most processes involving hydrocarbons or carbon oxides at high temperatures suffer from the disadvantage of coke formation. The formation of coke deposits during pyrolysis of hydrocarbons or chlorinated hydrocarbons is of significant practical importance. Examples of such processes are the steam cracking of alkanes to produce olefins and the thermal decomposition of 1,2-dichloroethane (EDC) for the production of vinyl chloride monomer (VCM). Even id the rate of coke production is low, the cumulative nature of the solid product will result in reactor fouling. The present work deals with the thermal decomposition of EDC. Coke formation has been studied on metal surfaces in a quartz tubular reactor. The rate of coke deposition was measures on metal foils hanging from one arm of a microbalance. A complete analysis of the product gas was accomplished using on-line gas chromatography. The results show that coke deposition during thermal decomposition of EDC depends on the composition of the feed as well as on the nature of the surface of the metal foil. Small amounts of other components (contamination with other chlorinated hydrocarbons as an example) may have a large influence on the rate of coke formation. The results are discussed in terms of surface composition/morphology of the metal foil and the free radical mechanism for thermal decomposition of FDC.

Holmen, A. [Norwegian Institute of Technology, Trondheim (Norway); Lindvag, O.A. [SINTEF Applied Chemistry, Trondheim (Norway)

1995-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

On the star formation history of IZw 18  

E-Print Network [OSTI]

It has been suggested that a continuous low star formation rate has been the dominant regime in IZw 18 and in dwarf galaxies for the lifetime of these objects (Legrand et al. 1999). Here, we discuss and model various star-forming histories for IZw 18. Particularly, we show that if the metallicity observed in IZw 18 results from starburst events only, the observed colors constrain the fraction of the metals ejected from the galaxy to be less than 50-70 %. We demonstrate that the continuous star formation scenario reproduces the observed parameters of IZw 18. A continuous star formation rate (SFR) of about 10E-4 Msol/yr during 14 Gyr reproduces precisely the observed abundances. This SFR is comparable with the lowest SFR observed in low surface brightness galaxies (van Zee et al. 1997). Generalized to all galaxies, the low continuous SFR scenario accounts for various facts: the presence of star formation in quiescent dwarfs and LSBG, the metallicity increase with time in the most underabundant DLA systems, and the metal content extrapolations to the outskirts of spiral galaxies. Also the apparent absence of galaxies with a metallicity lower than IZw 18, the apparent absence of HI clouds without optical counterparts, and the homogeneity of abundances in dwarfs galaxies are natural outcomes of the scenario. This implies that, even if starbursts are strong and important events in the life of galaxies, their more subdued but continuous star formation regime cannot be ignored when accounting for their chemical evolution.

F. Legrand

1999-12-06T23:59:59.000Z

142

Modelling New Particle Formation Events in the South African Savannah  

SciTech Connect (OSTI)

Africa is one of the less studied continents with respect to atmospheric aerosols. Savannahs are complex dynamic systems sensitive to climate and land-use changes, but the interaction with the atmosphere is not well understood. Atmospheric particles, aka aerosols, affect the climate on regional and global scale, and are an important factor in air quality. In this study measurements from a relatively clean savannah environment in South Africa were used to model new particle formation and growth. There are already some combined long-term measurements of trace gas concentrations together with aerosol and meteorological variables available, but to our knowledge this is the first time detailed simulations, that include all the main processes relevant to particle formation, were done. The results show that both investigated particle formation mechanisms overestimated the formation rates dependency on sulphuric acid. The approach including low volatile organic compounds to the particle formation process was more accurate in describing the nucleation events. To get reliable estimation of aerosol concentration in simulations for larger scales, nucleation mechanisms would need to include organic compounds, at least in southern Africa.

Gierens, Rosa; Laakso, Lauri; Mogensen, Ditte; Vakkari, Ville; Beukes, J. P.; Van Zyl, Pieter; Hakola, H.; Guenther, Alex B.; Pienaar, J. J.; Boy, Michael

2014-01-01T23:59:59.000Z

143

The Formation of Population III Binaries  

E-Print Network [OSTI]

We explore the possibility for the formation of Population III binaries. The collapse of a rotating cylinder is simulated with a three-dimensional, high-resolution nested grid, assuming the thermal history of primordial gas. The simulations are done with dimensionless units, and the results are applicable to low-mass as well as massive systems by scaling with the initial density. We find that if the initial angular momentum is as small as $\\beta \\approx 0.1$, where $\\beta$ is the ratio of centrifugal force to pressure force, then the runaway collapse of the cloud stops to form a rotationally-supported disk. After the accretion of the envelope, the disk undergoes a ring instability, eventually fragmenting into a binary. If the initial angular momentum is relatively large, a bar-type instability arises, resulting in the collapse into a single star through rapid angular momentum transfer. The present results show that a significant fraction of Pop III stars are expected to form in binary systems, even if they are quite massive or less massive. The cosmological implications of Population III binaries are briefly discussed.

Kazuya Saigo; Tomoaki Matsumoto; Masayuki Umemura

2004-10-29T23:59:59.000Z

144

The Formation of Population III Binaries  

E-Print Network [OSTI]

We explore the possibility for the formation of Population III binaries. The collapse of a rotating cylinder is simulated with a three-dimensional, high-resolution nested grid, assuming the thermal history of primordial gas. The simulations are done with dimensionless units, and the results are applicable to low-mass as well as massive systems by scaling with the initial density. We find that if the initial angular momentum is as small as $\\beta \\approx 0.1$, where $\\beta$ is the ratio of centrifugal force to pressure force, then the runaway collapse of the cloud stops to form a rotationally-supported disk. After the accretion of the envelope, the disk undergoes a ring instability, eventually fragmenting into a binary. If the initial angular momentum is relatively large, a bar-type instability arises, resulting in the collapse into a single star through rapid angular momentum transfer. The present results show that a significant fraction of Pop III stars are expected to form in binary systems, even if they ar...

Saigo, K; Umemura, M; Saigo, Kazuya; Matsumoto, Tomoaki; Umemura, Masayuki

2004-01-01T23:59:59.000Z

145

Multicolor Maps from Compound Queries | OpenEI Community  

Open Energy Info (EERE)

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146

Win-stay lose-shift strategy in formation changes in football  

E-Print Network [OSTI]

Managerial decision making is likely to be a dominant determinant of performance of teams in team sports. Here we use Japanese and German football data to investigate correlates between temporal patterns of formation changes across matches and match results. We found that individual teams and managers both showed win-stay lose-shift behavior, a type of reinforcement learning. In other words, they tended to stick to the current formation after a win and switch to a different formation after a loss. In addition, formation changes did not affect the results of succeeding matches in most cases. The results indicate that a swift implementation of a new formation in the win-stay lose-shift manner may not be a successful managerial rule of thumb.

Tamura, Kohei

2015-01-01T23:59:59.000Z

147

Radio Triggered Star Formation in Cooling Flows  

E-Print Network [OSTI]

The giant galaxies located at the centers of cluster cooling flows are frequently sites of vigorous star formation. In some instances, star formation appears to have been triggered by the galaxy's radio source. The colors and spectral indices of the young populations are generally consistent with short duration bursts or continuous star formation for durations much less than 1 Gyr, which is less than the presumed ages of cooling flows. The star formation properties are inconsistent with fueling by a continuously accreting cooling flow, although the prevalence of star formation is consistent with repeated bursts and periodic refueling. Star formation may be fueled, in some cases, by cold material stripped from neighboring cluster galaxies.

B. R. McNamara

1999-11-08T23:59:59.000Z

148

Floating insulated conductors for heating subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation includes a conduit located in a first opening in the subsurface formation. Three electrical conductors are located in the conduit. A return conductor is located inside the conduit. The return conductor is electrically coupled to the ends of the electrical conductors distal from the surface of the formation. Insulation is located inside the conduit. The insulation electrically insulates the three electrical conductors, the return conductor, and the conduit from each other.

Burns, David; Goodwin, Charles R.

2014-07-29T23:59:59.000Z

149

Theoretical Investigations on the Formation and Dehydrogenation...  

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

of boron-nitrogen-hydrogen (BNHx) compounds that are promising materials for chemical hydrogen storage. Understanding the kinetics and reaction pathways of formation of these...

150

Heating systems for heating subsurface formations  

DOE Patents [OSTI]

Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.

Nguyen, Scott Vinh (Houston, TX); Vinegar, Harold J. (Bellaire, TX)

2011-04-26T23:59:59.000Z

151

Threshold displacement energies and defect formation energies...  

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

energies and defect formation energies in Y2Ti2O7. Abstract: Ab initio molecular dynamics simulations have been carried out to determine both the threshold displacement...

152

Nonequilibrium Atmospheric Secondary Organic Aerosol Formation...  

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

Aerosol Formation and Growth. Abstract: Airborne particles play a critical role in air quality, human health effects, visibility and climate. Secondary organic aerosols (SOA)...

153

Standard Format and Content for Emergency Plans  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This volume addresses recommended emergency plan format and content for Operational Emergency Base Programs and Operational Emergency Hazardous Material Programs. Canceled by DOE G 151.1-3.

1997-08-21T23:59:59.000Z

154

Hydrogen Adsorption Induces Interlayer Carbon Bond Formation...  

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

Hydrogen Adsorption Induces Interlayer Carbon Bond Formation in Supported Few-Layer Graphene Friday, February 28, 2014 Among the allotropes of carbon, diamond has some of the most...

155

The Formation and Fragmentation of Primordial Molecular Clouds  

E-Print Network [OSTI]

Many questions in physical cosmology regarding the thermal history of the intergalactic medium, chemical enrichment, reionization, etc. are thought to be intimately related to the nature and evolution of pregalactic structure. In particular the efficiency of primordial star formation and the primordial IMF are of special interest. We present results from high resolution three-dimensional adaptive mesh refinement simulations that follow the collapse of primordial molecular clouds and their subsequent fragmentation within a cosmologically representative volume. Comoving scales from 128 kpc down to 0.5 pc are followed accurately. Dark matter dynamics, hydrodynamics and all relevant chemical and radiative processes (cooling) are followed self-consistently for a cluster normalized CDM structure formation model. Primordial molecular clouds with ~100,000 solar masses are assembled by mergers of multiple objects that have formed hydrogen molecules in the gas phase with a fractional abundance of 100,000/cm^3 are found. We find that less than 1% of the primordial gas in such small scale structures cools and collapses to sufficiently high densities to be available for primordial star formation. Furthermore, our results indicate that the formation of very massive objects, massive black holes, fragmentation of a large fraction of baryons into brown dwars or Jupiter size fragments seems, in contrast to various claims in the literature, very unlikely. The expected escape fraction of UV photons with (h nu) > 11eV is very small.

Tom Abel; Greg L. Bryan; Michael L. Norman

1998-10-14T23:59:59.000Z

156

Pocket formation and the flame surface density equation  

SciTech Connect (OSTI)

The occurrence and properties of singularities in the equation for the surface density function {sigma} {triple_bond}{vert_bar}{del}{Phi}{vert_bar} are analyzed analytically and numerically using data from two dimensional direct numerical simulation (DNS) of pocket formation in a premixed methane-air flame. The various stages and the relevant time scales associated with pocket formation were determined in a previous study. It was found that isolated pockets form if and only if a nondegenerate critical point of a saddle point type appears. The appearance of a singularity in the isoline representing the flame front may have implications to modeling of the terms in the surface density function (sdf) approach during such transient events as pocket formation. The sink and source terms in sdf are evaluated in the neighborhood of a critical point using DNS data during pocket formation, and an analytic representation of a scalar in the vicinity of the critical point which allows for the computation of all kinematic properties. The analytic and computational results show that the normal restoration and dissipation terms in the sdf become singular at the critical point when the pocket emerges. Furthermore, the analytic results show that the singularities exactly cancel, and therefore, the main conclusion is that it is unnecessary to model the singular behavior of these terms at critical points. However, closure of their sum is recommended.

Kollman, W. [Univ. of California, Davis, CA (United States); Chen, J.H. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility

1998-03-01T23:59:59.000Z

157

Implantation conditions for diamond nanocrystal formation in amorphous silica  

SciTech Connect (OSTI)

We present a study of carbon ion implantation in amorphous silica, which, followed by annealing in a hydrogen-rich environment, leads to preferential formation of carbon nanocrystals with cubic diamond (c-diamond), face-centered cubic (n-diamond), or simple cubic (i-carbon) carbon crystal lattices. Two different annealing treatments were used: furnace annealing for 1 h and rapid thermal annealing for a brief period, which enables monitoring of early nucleation events. The influence of implanted dose and annealing type on carbon and hydrogen concentrations, clustering, and bonding were investigated. Rutherford backscattering, elastic recoil detection analysis, infrared spectroscopy, transmission electron microscopy, selected area electron diffraction, ultraviolet-visible absorption measurements, and Raman spectroscopy were used to study these carbon formations. These results, combined with the results of previous investigations on similar systems, show that preferential formation of different carbon phases (diamond, n-diamond, or i-carbon) depends on implantation energy, implantation dose, and annealing conditions. Diamond nanocrystals formed at a relatively low carbon volume density are achieved by deeper implantation and/or lower implanted dose. Higher volume densities led to n-diamond and finally to i-carbon crystal formation. This observed behavior is related to damage sites induced by implantation. The optical properties of different carbon nanocrystal phases were significantly different.

Buljan, Maja; Radovic, Iva Bogdanovic; Desnica, Uros V.; Ivanda, Mile; Jaksic, Milko [Ruder Boskovic Institute, P.O. Box 180, 10002 Zagreb (Croatia); Saguy, Cecile; Kalish, Rafi [Physics Department and Solid State Institute, Technion, Haifa 32000 (Israel); Djerdj, Igor [Department of Materials, Swiss Federal Institute of Technology (ETH) Zuerich, Wolfgang-Pauli-Str. 10, CH-8093 Zuerich (Switzerland); Tonejc, Andelka [Faculty of Science, Department of Physics, University of Zagreb, 10000 Zagreb (Croatia); Gamulin, Ozren [School of Medicine, Zagreb University, 10000 Zagreb (Croatia)

2008-08-01T23:59:59.000Z

158

E-Print Network 3.0 - application au procede Sample Search Results  

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

procede Search Powered by Explorit Topic List Advanced Search Sample search results for: application au procede Page: << < 1 2 3 4 5 > >> 1 Departement de formation doctorale en...

159

E-Print Network 3.0 - adult primary sensory Sample Search Results  

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

may result in ... Source: Kensinger, Elizabeth A. - Department of Psychology, Boston College Collection: Biology and Medicine 3 Pressure Ulcer Formation Prevention in...

160

E-Print Network 3.0 - actively forming gypsum Sample Search Results  

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

for formation of gypsum) for the reference solution... by ICP-mass spectroscopy analysis for calcium. 4. Results and discussion Gypsum scale can form due... of...

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


161

E-Print Network 3.0 - argon inert gas Sample Search Results  

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

the formation of... reacti- vity, MA in inert gas atmosphere facilitates cold welding and results in fast particle coarsening... of the fabrication of MMC powders with a...

162

Smoothed Particle Magnetohydrodynamics (some shocking results...)  

E-Print Network [OSTI]

There have been some issues in the past in attempts to simulate magnetic fields using the Smoothed Particle Hydrodynamics (SPH) method. SPH is well suited to star formation problems because of its Lagrangian nature. We present new, stable and conservative methods for magnetohydrodynamics (MHD) in SPH and present numerical tests on both waves and shocks in one dimension to show that it gives robust and accurate results.

D. J. Price; J. J. Monaghan

2003-10-06T23:59:59.000Z

163

Purification of Polyhydroxybutyrate Synthase from Its Native Organism, Ralstonia eutropha: Implications for the Initiation and Elongation of Polymer Formation in Vivo  

E-Print Network [OSTI]

Class I polyhydroxybutyrate (PHB) synthase (PhaC) from Ralstonia eutropha catalyzes the formation of PHB from (R)-3-hydroxybutyryl-CoA, ultimately resulting in the formation of insoluble granules. Previous mechanistic ...

Cho, Mimi

164

Scale formation at various locations in a geothermal operation due to injection of imported waters  

SciTech Connect (OSTI)

The injection of waters that are not native to a geothermal formation generates various physical and chemical problems. The major chemical problem resulting from such injections is the formation of sulfate scales (particularly CaSO4, BaSO4 and SrSO4) at various locations starting from the injection well through the production well to the surface facilities of any geothermal operation. One of the ways to prevent this type of scale formation is by reducing the sulfate concentration of the injection waters. The effect of sulfate deionization on scale formation at various locations of the geothermal operations is studied. Some experimental results on the CaSO4 scale formation in porous media upon heating an injection water with and without addition of scale inhibitors are also given.

Vetter, O.J.; Kandarpa, V.

1982-06-22T23:59:59.000Z

165

Formation of $??$ atoms in $K_{?4} decay  

E-Print Network [OSTI]

We derive the decay rate of $\\pi\\mu$ atom formation in $K_{\\mu 4}$ decay. Using the obtained expressions we calculate the decay rate of atom formation and point out that considered decay can give a noticeable contribution as a background to the fundamental decay $K^+\\to \\pi^+\

S. R. Gevorkyan; A. V. Tarasov; O. O. Voskresenskaya

2009-12-01T23:59:59.000Z

166

Methods for forming wellbores in heated formations  

DOE Patents [OSTI]

A method for forming a wellbore in a heated formation includes flowing liquid cooling fluid to a bottom hole assembly in a wellbore in a heated formation. At least a portion of the liquid cooling fluid is vaporized at or near a region to be cooled. Vaporizing the liquid cooling fluid absorbs heat from the region to be cooled.

Guimerans, Rosalvina Ramona; Mansure, Arthur James

2012-09-25T23:59:59.000Z

167

DISSERTATION FORMATION OF THE HURRICANE EYE  

E-Print Network [OSTI]

DISSERTATION FORMATION OF THE HURRICANE EYE Submitted by Jonathan L. Vigh Department of Atmospheric OF THE HURRICANE EYE BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY. Schubert Department Head: Richard H. Johnson ii #12;ABSTRACT OF DISSERTATION FORMATION OF THE HURRICANE EYE

Schubert, Wayne H.

168

Shell Formation and Bone Strength Laying Hens  

E-Print Network [OSTI]

Shell Formation and Bone Strength in Laying Hens Effects of Age, Daidzein and Exogenous Estrogen Cover aquarelle: E. Spörndly-Nees #12;Shell Formation and Bone Strength in Laying Hens Effects of Age eggshells as shell quality declines with age during the laying period. This is a concern for food safety

169

Le logiciel "Tigre" en formation PLC 1 Grtice J. Vincent Le logiciel Tigre en formation PLC  

E-Print Network [OSTI]

"Tigre" en formation PLC 1 Grétice J. Vincent Le logiciel « Tigre » en formation PLC J. Vincent Le;______________________________________________________________________________________ Le logiciel "Tigre" en formation PLC 2 Grétice J. Vincent 1.1. La lecture Voici l'écran d;______________________________________________________________________________________ Le logiciel "Tigre" en formation PLC 3 Grétice J. Vincent Figure 3 1.2. La démonstration Voici l

Paris-Sud XI, Université de

170

Hazard analysis results report  

SciTech Connect (OSTI)

This document describes and defines the Hazard Analysis Results for the Tank Waste Remediation System Final Safety Analysis Report.

Niemi, B.J., Westinghouse Hanford

1996-09-30T23:59:59.000Z

171

E-Print Network 3.0 - adherens junction formation Sample Search...  

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

search results for: adherens junction formation Page: << < 1 2 3 4 5 > >> 1 Molecular Biology of the Cell Vol. 12, 34653475, November 2001 Summary: and Is Required for Adherens...

172

E-Print Network 3.0 - actin filament formation Sample Search...  

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

search results for: actin filament formation Page: << < 1 2 3 4 5 > >> 1 Current Biology 16, 19241930, October 10, 2006 2006 Elsevier Ltd All rights reserved DOI 10.1016...

173

Methods for synthesizing alane without the formation of adducts and free of halides  

DOE Patents [OSTI]

A process is provided to synthesize an alane without the formation of alane adducts as a precursor. The resulting product is a crystallized .alpha.-alane and is a highly stable product and is free of halides.

Zidan, Ragaiy; Knight, Douglas A; Dinh, Long V

2013-02-19T23:59:59.000Z

174

E-Print Network 3.0 - ash formation transformations Sample Search...  

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

chlorinated phenols because their presence in the ash could result in the formation of dioxins and furans... THE USE OF MUNICIPAL WASTE COMBUSTOR ASH AS A PARTIAL REPLACEMENT OF...

175

Fission and quasi-fission: insights into heavy element formation reactions  

SciTech Connect (OSTI)

Mass-angle distributions carry detailed information on the characteristics of quasi-fission, and thus of the dynamics of heavy element formation reactions. Recent experimental results are presented and discussed.

Hinde, D. J.; Rietz, R. du; Rafiei, R.; Dasgupta, M.; Diaz-Torres, A. [Department of Nuclear Physics, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia); Thomas, R. G. [Department of Nuclear Physics, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia); B.A.R.C., Mumbai (India)

2009-03-04T23:59:59.000Z

176

E-Print Network 3.0 - abanico east formation Sample Search Results  

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

Collection: Geosciences ; Engineering 6 Ahorro EnergAhorro Energticotico Summary: emisiones de bixido de carbono al ambiente. Un abanico en la ventana atrae el aire fresco de...

177

E-Print Network 3.0 - abomasal curd formation Sample Search Results  

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

Meal Summary: , at least in part, be substrate driven. Responses of cows to abomasal infusion of protein or AA have shown... of Schwab et al. (19). The efficiency with which...

178

E-Print Network 3.0 - amide bond formation Sample Search Results  

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

Irvine Collection: Chemistry 3 J. Am. Chem. SOC.1994,116,2149-2150 Amide-Amide and Amide-Water Hydrogen Bonds Summary: of hydrogen bonds observed here therefore suggests that...

179

E-Print Network 3.0 - alveolar bone formation Sample Search Results  

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

Sutures to Deciduous Dentition in Nonhuman Primates K... .D., E.R. Dumont, Ph.D., T.D. Smith, Ph.D. Objective: The relationship of the human premaxillary bone Source: Dumont,...

180

E-Print Network 3.0 - anodic film formation Sample Search Results  

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

their thin-film expertise from window technology research and applied it to a solid-state, thin-film lithium battery. The researchers Summary: . Planar Energy researcher Binh...

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


181

E-Print Network 3.0 - actin ring formation Sample Search Results  

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

into a closed ring (Fig 2b). As demonstrated... , of an F-actin bundle in a ... Source: Frey, Erwin - Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Univers...

182

E-Print Network 3.0 - anisn format dot Sample Search Results  

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

the ANISN (Ref. 8), DOT (Ref. 9), and TWOTRAN (Ref. 10) codes. The continuous energy VIM Monte Carlo code... in Sec. VIII a r e derived from three- dimensional calculations....

183

E-Print Network 3.0 - asbestos body formation Sample Search Results  

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

MANAGEMENT PROGRAM Prepared: May... Mechanical Rooms 8 3.4 Asbestos Free Labels 8 4.0 Lockout Areas 8 5.0 Training 9 5.1 Overview 9 5.2 Asbestos... Awareness 9 6.0 Negative...

184

E-Print Network 3.0 - av canal formation Sample Search Results  

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

Andrew Schneider 2010 All rights reserved... 12;II. History of the Miami and Erie Canal in Cincinnati Dreams of a canal system that would cross... canals were being...

185

E-Print Network 3.0 - abanico formation andes Sample Search Results  

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

Department of Atmospheric and Environmental Sciences, State University of New York at Albany Collection: Environmental Sciences and Ecology ; Geosciences 31 UNIVERSITE DE TOULOUSE...

186

E-Print Network 3.0 - assessment item format Sample Search Results  

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

NJ... at 50 ms( s) Loss concentrated at midplane v Action Items Calculate power density of prompt loss Source: Fusiongnition Research Experiment (FIRE) Collection: Plasma...

187

E-Print Network 3.0 - alkaline band formation Sample Search Results  

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

of Mechanical Engineering, Hong Kong University of Science and Technology Collection: Energy Storage, Conversion and Utilization ; Chemistry 51 Residual alkalinity as tracer to...

188

E-Print Network 3.0 - asmari formation zagros Sample Search Results  

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

over the latest... : Evolution tectonique et croissance de la chane du Zagros (Fars, Iran): contraintes magntostratigraphiques... , sdimentologiques et thermochronomtrique...

189

Mixed-mode diesel HCCI with External Mixture Formation: Preliminary Results  

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 RankCombustion | Department ofT ib l L d F S i DOE TribaltheMyMinutes from DecemberCannon, MOX Federal|

190

Feedback from Protostellar Outflows in Star and Star Cluster Formation  

E-Print Network [OSTI]

Magnetic stresses collimate protostellar winds into a common distribution of force with angle. Sweeping into the ambient medium, such winds drive bipolar molecular outflows whose properties are insensitive to the distribution of ambient gas and to the details of how the wind is launched, and how its intensity varies over time. Moreover, these properties are in accord with the commonly observed features of outflows. This model is simple enough to permit a quantitative study of the feedback effects from low-mass star formation. It predicts the rate at which star-forming gas is ejected by winds, and hence the efficiency with which stars form. Applied to individual star formation, it relates the stellar initial mass function to the distribution of pre-stellar cores. Applied to cluster formation, it indicates whether the resulting stellar system will remain gravitationally bound. Using the energy injection and mass ejection implied by this model, we investigate the dynamical evolution of a molecular clump as a stellar cluster forms within it. This depends critically on the rate at which turbulence decays: it may involve equilibrium star formation (slow decay), overstable oscillations, or collapse (fast decay).

Christopher D. Matzner

2000-07-13T23:59:59.000Z

191

The role of calcium hydroxide in the formation of thaumasite  

SciTech Connect (OSTI)

It has recently been derived by thermodynamic calculation that the presence or absence of calcium hydroxide plays a vital role in the resistance of cement paste or concrete against the formation of thaumasite. To obtain experimental data on this matter, special binders have been mixed and used for the preparation of mortar bars. These specimens were exposed to moderate sulphate attack for a period of 18 months at a temperature of 8 deg. C. Mortar bars containing calcium hydroxide showed visual signs of attack a few months after exposure, leading to expansion, mass loss and complete failure. In contrast to this, no signs of attack were observed when no calcium hydroxide was present in the microstructure. These results confirm the conclusions of earlier thermodynamic calculations that the presence of calcium hydroxide has an important impact on the formation of thaumasite. Calcium-rich C-S-H formed in the presence of calcium hydroxide is vulnerable against sulphate attack and the formation of thaumasite. In the absence of calcium hydroxide, C-S-H has a much lower calcium/silicon ratio and a higher resistance against the formation of thaumasite.

Bellmann, F. [Institute for Building Materials Science, Department of Civil Engineering, Bauhaus-University Weimar (Germany)], E-mail: frank.bellmann@bauing.uni-weimar.de; Stark, J. [Institute for Building Materials Science, Department of Civil Engineering, Bauhaus-University Weimar (Germany)

2008-10-15T23:59:59.000Z

192

Graphene defect formation by extreme ultraviolet generated photoelectrons  

SciTech Connect (OSTI)

We have studied the effect of photoelectrons on defect formation in graphene during extreme ultraviolet (EUV) irradiation. Assuming the major role of these low energy electrons, we have mimicked the process by using low energy primary electrons. Graphene is irradiated by an electron beam with energy lower than 80?eV. After e-beam irradiation, it is found that the D peak, I(D), appears in the Raman spectrum, indicating defect formation in graphene. The evolution of I(D)/I(G) follows the amorphization trajectory with increasing irradiation dose, indicating that graphene goes through a transformation from microcrystalline to nanocrystalline and then further to amorphous carbon. Further, irradiation of graphene with increased water partial pressure does not significantly change the Raman spectra, which suggests that, in the extremely low energy range, e-beam induced chemical reactions between residual water and graphene are not the dominant mechanism driving defect formation in graphene. Single layer graphene, partially suspended over holes was irradiated with EUV radiation. By comparing with the Raman results from e-beam irradiation, it is concluded that the photoelectrons, especially those from the valence band, contribute to defect formation in graphene during irradiation.

Gao, A., E-mail: a.gao@utwente.nl; Lee, C. J.; Bijkerk, F. [FOM-Dutch Institute for Fundamental Energy Research, Edisonbaan 14, 3439 MN Nieuwegein, The Netherlands and XUV Optics Group, MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede (Netherlands)

2014-08-07T23:59:59.000Z

193

Multiple stalk formation as a pathway of defect-induced membrane fusion  

E-Print Network [OSTI]

We propose that the first stage of membrane fusion need not be the formation of a single stalk. Instead, we consider a scenario for defect-induced membrane fusion that proceeds cooperatively via multiple stalk formation. The defects (stalks or pores) attract each other via membrane-mediated capillary interactions that result in a condensation transition of the defects. The resulting dense phase of stalks corresponds to the so-called fusion intermediate.

D. B. Lukatsky; Daan Frenkel

2004-03-29T23:59:59.000Z

194

SIMULATION OF THE FORMATION OF A SOLAR ACTIVE REGION  

SciTech Connect (OSTI)

We present a radiative magnetohydrodynamics simulation of the formation of an active region (AR) on the solar surface. The simulation models the rise of a buoyant magnetic flux bundle from a depth of 7.5 Mm in the convection zone up into the solar photosphere. The rise of the magnetic plasma in the convection zone is accompanied by predominantly horizontal expansion. Such an expansion leads to a scaling relation between the plasma density and the magnetic field strength such that B {proportional_to} rhov{sup 1/2}. The emergence of magnetic flux into the photosphere appears as a complex magnetic pattern, which results from the interaction of the rising magnetic field with the turbulent convective flows. Small-scale magnetic elements at the surface first appear, followed by their gradual coalescence into larger magnetic concentrations, which eventually results in the formation of a pair of opposite polarity spots. Although the mean flow pattern in the vicinity of the developing spots is directed radially outward, correlations between the magnetic field and velocity field fluctuations allow the spots to accumulate flux. Such correlations result from the Lorentz-force-driven, counterstreaming motion of opposite polarity fragments. The formation of the simulated AR is accompanied by transient light bridges between umbrae and umbral dots. Together with recent sunspot modeling, this work highlights the common magnetoconvective origin of umbral dots, light bridges, and penumbral filaments.

Cheung, M. C. M.; Title, A. M. [Lockheed Martin Solar and Astrophysics Laboratory, Palo Alto, CA 94304 (United States); Rempel, M. [High Altitude Observatory, NCAR, P.O. Box 3000, Boulder, CO 80307 (United States); Schuessler, M. [Max Planck Institute for Solar System Research, Katlenburg-Lindau, 37191 (Germany)

2010-09-01T23:59:59.000Z

195

Synergistic effect of mixing dimethyl ether with methane, ethane, propane, and ethylene fuels on polycyclic aromatic hydrocarbon and soot formation  

SciTech Connect (OSTI)

Characteristics of polycyclic aromatic hydrocarbon (PAH) and soot formation in counterflow diffusion flames of methane, ethane, propane, and ethylene fuels mixed with dimethyl ether (DME) have been investigated. Planar laser-induced incandescence and fluorescence techniques were employed to measure relative soot volume fractions and PAH concentrations, respectively. Results showed that even though DME is known to be a clean fuel in terms of soot formation, DME mixture with ethylene fuel increases PAH and soot formation significantly as compared to the pure ethylene case, while the mixture of DME with methane, ethane, and propane decreases PAH and soot formation. Numerical calculations adopting a detailed kinetics showed that DME can be decomposed to produce a relatively large number of methyl radicals in the low-temperature region where PAH forms and grows; thus the mixture of DME with ethylene increases CH{sub 3} radicals significantly in the PAH formation region. Considering that the increase in the concentration of O radicals is minimal in the PAH formation region with DME mixture, the enhancement of PAH and soot formation in the mixture flames of DME and ethylene can be explained based on the role of methyl radicals in PAH and soot formation. Methyl radicals can increase the concentration of propargyls, which could enhance incipient benzene ring formation through the propargyl recombination reaction and subsequent PAH growth. Thus, the result substantiates the importance of methyl radicals in PAH and soot formation, especially in the PAH formation region of diffusion flames. (author)

Yoon, S.S. [Corporate Research and Development Division, Hyundai-Kia Motors, Gyeonggi-do 445-706 (Korea); Anh, D.H. [Korea Electric Power Research Institute, Daejeon 305-380 (Korea); Chung, S.H. [School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742 (Korea)

2008-08-15T23:59:59.000Z

196

Overview of ALICE results  

E-Print Network [OSTI]

The ALICE detector was designed to study the physics of matter under extreme conditions of high energy density. Different results were reported by the experiment using data from the successful run I of the LHC. The goal of the present work is to present an overview of recent ALICE results. This comprises selected results from several analyses of pp, p-pb and Pb-Pb data at the LHC energies.

Antonio Ortiz; for the ALICE Collaboration

2015-01-22T23:59:59.000Z

197

Overview of ALICE results  

E-Print Network [OSTI]

The ALICE detector was designed to study the physics of matter under extreme conditions of high energy density. Different results were reported by the experiment using data from the successful run I of the LHC. The goal of the present work is to present an overview of recent ALICE results. This comprises selected results from several analyses of pp, p-pb and Pb-Pb data at the LHC energies.

Ortiz, Antonio

2015-01-01T23:59:59.000Z

198

Testbed: Published Results  

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

Testbed Results Current Testbed Research Proposal Process Terms and Conditions Dark Fiber Testbed Performance (perfSONAR) Software & Tools Development Partnerships...

199

Diffraction Results from CDF  

SciTech Connect (OSTI)

We present final results by the CDF II collaboration on diffractive W and Z production, report on the status of ongoing analyses on diffractive dijet production and on rapidity gaps between jets, and briefly summarize results obtained on exclusive production pointing to their relevance to calibrating theoretical models used to predict exclusive Higgs-boson production at the LHC.

Goulianos, Konstantin

2012-04-01T23:59:59.000Z

200

Recent results from TRISTAN  

SciTech Connect (OSTI)

TRISTAN results on {gamma}{gamma} physics from 1994 to 1995 are reviewed in this report. We have systematically investigated jet production, the {gamma}-structure function, and charm pair production in {gamma}{gamma} processes. The results are discussed, and future prospects are presented.

Enomoto, Ryoji [National Laboratory for High Energy Physics, Ibaraki (Japan)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

REVIEW ARTIC LE MICROSCALE THERMAL BUBBLE FORMATION  

E-Print Network [OSTI]

8 C a thermal diffusivity, m r s 8 C 2 F excess heat conduction shape factor e variable in the heat, and this article discusses microscale bubble formation by using polysilicon microheaters. Figure 1a shows

Lin, Liwei

202

MAES Project Review Procedures SEMINAR FORMAT  

E-Print Network [OSTI]

MAES Project Review Procedures SEMINAR FORMAT The peer review seminar will be styled after oral the project's past accomplishments (if renewal) Discuss the new project proposal 2. Open Discussion ­ (approx

Maxwell, Bruce D.

203

Kinetics of acrylamide formation in potato chips  

E-Print Network [OSTI]

in potato chips. Seven potato cultivars were analyzed to determine their influence on acrylamide formation during traditional and vacuum frying. The White Rose cultivar produced the highest level of acrylamide during both traditional and vacuum frying...

Granda, Claudia Esthela

2006-08-16T23:59:59.000Z

204

Modeling deposit formation in diesel injector nozzle  

E-Print Network [OSTI]

Formation of deposit in the diesel injector nozzle affects the injection behavior and hinders performance. Under running condition, deposit precursors are washed away by the ensuing injection. However, during the cool down ...

Sudhiesh Kumar, Chintoo

2009-01-01T23:59:59.000Z

205

Electromagnetic formation flight of satellite arrays  

E-Print Network [OSTI]

Proposed methods of actuating spacecraft in sparse aperture arrays use propellant as a reaction mass. For formation flying systems, propellant becomes a critical consumable which can be quickly exhausted while maintaining ...

Kwon, Daniel W., 1980-

2005-01-01T23:59:59.000Z

206

The case against scaling defect models of cosmic structure formation  

E-Print Network [OSTI]

We calculate predictions from defect models of structure formation for both the matter and Cosmic Microwave Background (CMB) over all observable scales. Our results point to a serious problem reconciling the observed large-scale galaxy distribution with the COBE normalization, a result which is robust for a wide range of defect parameters. We conclude that standard scaling defect models are in conflict with the data, and show how attempts to resolve the problem by considering non-scaling defects would require radical departures from the standard scaling picture.

Andreas Albrecht; Richard A. Battye; James Robinson

1997-07-11T23:59:59.000Z

207

Cyclic Imide Dioxime: Formation and Hydrolytic Stability  

SciTech Connect (OSTI)

Poly(acrylamidoximes) play an important role in the uranium extraction from seawater. The present work reports solution studies of simple analogs to address the formation and stability of two binding sites present in these polymers, open-chain amidoximes and cyclic imide dioximes, including: 1) conditions that maximize the formation of the cyclic form, 2) existence of a base-induced conversion from open-chain to cyclic form, and 3) degradation under acid and base conditions.

Kang, S.O. [University of Kansas; Vukovic, Sinisa [ORNL; Custelcean, Radu [ORNL; Hay, Benjamin [ORNL

2012-01-01T23:59:59.000Z

208

Triggered star formation in the Magellanic Clouds  

E-Print Network [OSTI]

Abstract. We discuss how tidal interaction between the Large Magellanic Cloud (LMC), the Small Magellanic Cloud (SMC), and the Galaxy triggers galaxy-wide star formation in the Clouds for the last ? 0.2 Gyr based on our chemodynamical simulations on the Clouds. Our simulations demonstrate that the tidal interaction induces the formation of asymmetric spiral arms with high gas densities and consequently triggers star formation within the arms in the LMC. Star formation rate in the present LMC is significantly enhanced just above the eastern edge of the LMC’s stellar bar owing to the tidal interaction. The location of the enhanced star formation is very similar to the observed location of 30 Doradus, which suggests that the formation of 30 Doradus is closely associated with the last Magellanic collision about 0.2 Gyr ago. The tidal interaction can dramatically compress gas initially within the outer part of the SMC so that new stars can be formed from the gas to become intergalactic young stars in the inter-Cloud region (e.g., the Magellanic Bridge). The metallicity distribution function of the newly formed stars in the Magellanic Bridge has a peak of [Fe/H] ? ?0.8, which is significantly lower than the stellar metallicity of the SMC.

B. G. Elmegreen; J. Palous; Kenji Bekki

2006-01-01T23:59:59.000Z

209

Electroweak results from CDF  

SciTech Connect (OSTI)

Inclusive W and Z production cross-sections have been measured by CDF and certain electroweak parameters extracted with high precision from these measurements. New results on diboson production at the Tevatron are also presented.

D. S. Waters

2004-06-02T23:59:59.000Z

210

Recent results from Belle  

E-Print Network [OSTI]

The review on experimental results on charmonium and charmonium-like spectroscopy from B-factories is presented. Main theoretical interpretations, such as conventional charmonium, molecular state, hybrids, tetraquarks and others are discussed.

T. Uglov

2010-11-15T23:59:59.000Z

211

Recent MEG results  

E-Print Network [OSTI]

New results of a search for the ultra-rare decay $\\mu \\to e \\gamma$ by the MEG collaboration are reported in this contribution. The data were taken during 2009 and correspond to approximately 6.5 10$^{13}$ muon stopped on target. A maximum likelihood analysis sets an upper limit at 90\\% C.L. on the branching ratio, BF($\\mu \\to e \\gamma$) $< $1.5 10$^{-11}$. The results presented here are preliminary.

G. Cavoto

2010-12-09T23:59:59.000Z

212

The Formation and Fragmentation of Primordial Molecular Clouds  

E-Print Network [OSTI]

Many questions in physical cosmology regarding the thermal history of the intergalactic medium, chemical enrichment, reionization, etc. are thought to be intimately related to the nature and evolution of pregalactic structure. In particular the efficiency of primordial star formation and the primordial IMF are of special interest. We present results from high resolution three-dimensional adaptive mesh refinement simulations that follow the collapse of primordial molecular clouds and their subsequent fragmentation within a cosmologically representative volume. Comoving scales from 128 kpc down to 0.5 pc are followed accurately. Dark matter dynamics, hydrodynamics and all relevant chemical and radiative processes (cooling) are followed self-consistently for a cluster normalized CDM structure formation model. Primordial molecular clouds with ~100,000 solar masses are assembled by mergers of multiple objects that have formed hydrogen molecules in the gas phase with a fractional abundance of 11eV is very small.

Abel, T; Norman, M L; Abel, Tom; Bryan, Greg L.; Norman, Michael L.

1998-01-01T23:59:59.000Z

213

The Formation and Fragmentation of Primordial Molecular Clouds  

E-Print Network [OSTI]

Many questions in physical cosmology regarding the thermal history of theintergalactic medium, chemical enrichment, reionization, etc. are thought to beintimately related to the nature and evolution of pregalactic structure. Inparticular the efficiency of primordial star formation and the primordial IMFare of special interest. We present results from high resolutionthree--dimensional adaptive mesh refinement simulations that follow thecollapse of primordial molecular clouds and their subsequent fragmentationwithin a cosmologically representative volume. Comoving scales from 128 kpcdown to 1 pc are followed accurately. Dark matter dynamics, hydrodynamics andall relevant chemical and radiative processes (cooling) are followedself-consistently for a cluster normalized CDM structure formation model.Primordial molecular clouds with ~10^5 solar masses are assembled by mergers ofmultiple objects that have formed hydrogen molecules in the gas phase with afractional abundance of ~10^-4. As the subclumps merge cooling ...

Abel, T; Norman, M L; Abel, Tom; Bryan, Greg L.; Norman, Michael L.

2000-01-01T23:59:59.000Z

214

Role of nucleation sites on the formation of nanoporous Ge  

SciTech Connect (OSTI)

The role of nucleation sites on the formation of nanoporous Ge was investigated. Three Ge films with different spherical or columnar pore morphologies to act as inherent nucleation sites were sputtered on (001) Ge. Samples were implanted 90 Degree-Sign from incidence at 300 keV with fluences ranging from 3.0 Multiplication-Sign 10{sup 15} to 3.0 Multiplication-Sign 10{sup 16} Ge{sup +}/cm{sup 2}. Electron microscopy investigations revealed varying thresholds for nanoporous Ge formation and exhibited a stark difference in the evolution of the Ge layers based on the microstructure of the initial film. The results suggest that the presence of inherent nucleation sites significantly alters the onset and evolution of nanoporous Ge.

Yates, B. R.; Darby, B. L.; Jones, K. S. [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400 (United States); Elliman, R. G. [Department of Electronic Materials Engineering, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200 (Australia)

2012-09-24T23:59:59.000Z

215

Modelling Pattern Formation in Dip-Coating Experiments  

E-Print Network [OSTI]

We briefly review selected mathematical models that describe the dynamics of pattern formation phenomena in dip-coating and Langmuir-Blodgett transfer experiments, where solutions or suspensions are transferred onto a substrate producing patterned deposit layers with structure length from hundreds of nanometres to tens of micrometres. The models are presented with a focus on their gradient dynamics formulations that clearly shows how the dynamics is governed by particular free energy functionals and facilitates the comparison of the models. In particular, we include a discussion of models based on long-wave hydrodynamics as well as of more phenomenological models that focus on the pattern formation processes in such systems. The models and their relations are elucidated and examples of resulting patterns are discussed before we conclude with a discussion of implications of the gradient dynamics formulation and of some related open issues.

Markus Wilczek; Walter B. H. Tewes; Svetlana V. Gurevich; Michael H. Köpf; Lifeng Chi; Uwe Thiele

2015-02-12T23:59:59.000Z

216

Recovery of heavy crude oil or tar sand oil or bitumen from underground formations  

SciTech Connect (OSTI)

This patent describes a method of producing heavy crude oil or tar sand oil or bitumen from an underground formation. The method consists of utilizing or establishing an aqueous fluid communication path within and through the formation between an injection well or conduit and a production well or conduit by introducing into the formation from the injection well or conduit hot water and/or low quality steam at a temperature in the range about 60{sup 0}-130{sup 0}C and at a substantially neutral or alkaline pH to establish or enlarge the aqueous fluid communication path within the formation from the injection well or conduit to the production well or conduit by movement of the introduced hot water or low quality steam through the formation, increasing the temperature of the injected hot water of low quality steam to a temperature in the range about 110{sup 0}-180{sup 0}C while increasing the pH of the injected hot water or low quality steam to a pH of about 10-13 so as to bring about the movement or migration or stripping of the heavy crude oil or tar sand oil or bitumen from the formation substantially into the hot aqueous fluid communication path with the formation and recovering the resulting produced heavy crude oil or tar sand oil or bitumen from the formation as an emulsion containing less than about 30% oil or bitumen from the production well or conduit.

McKay, A.S.

1989-07-11T23:59:59.000Z

217

Star-formation history of the universe and its drivers   

E-Print Network [OSTI]

Determining the cosmic star formation history of the Universe is fundamental for our understanding of galaxy formation and evolution. While surveys now suggest that the "epoch" of galaxy formation occurred more than 6 ...

Sobral, David Ricardo Serrano

2011-11-23T23:59:59.000Z

218

Absorption and elimination of formate following oral administration of calcium formate in female human subjects  

E-Print Network [OSTI]

Absorption and elimination of formate following oral administration of calcium formate in female human subjects Publisher version available: http://dmd.aspetjournals.org/content/33/2/282.full.pdf Author...’s accepted manuscript, available through PubMed Central: http://dmd.aspetjournals.org/content/early/2004/11/16/dmd.104.001289 Full Citation of published version: Hanzlik RP, Fowler SC, Eells JT. Absorption and elimination of formate following oral administration of calcium...

Hanzlik, Robert P.; Fowler, S. C.; Eells, J. T.

2005-02-01T23:59:59.000Z

219

Creating and maintaining a gas cap in tar sands formations  

DOE Patents [OSTI]

Methods for treating a tar sands formation are disclosed herein. Methods for treating a tar sands formation may include providing heat to at least part of a hydrocarbon layer in the formation from one or more heaters located in the formation. Pressure may be allowed to increase in an upper portion of the formation to provide a gas cap in the upper portion. At least some hydrocarbons are produced from a lower portion of the formation.

Vinegar, Harold J. (Bellaire, TX); Karanikas, John Michael (Houston, TX); Dinkoruk, Deniz Sumnu (Houston, TX); Wellington, Scott Lee (Bellaire, TX)

2010-03-16T23:59:59.000Z

220

Characterization of Most Promising Sequestration Formations in the Rocky Mountain Region (RMCCS)  

SciTech Connect (OSTI)

The primary objective of the “Characterization of Most Promising Carbon Capture and Sequestration Formations in the Central Rocky Mountain Region” project, or RMCCS project, is to characterize the storage potential of the most promising geologic sequestration formations within the southwestern U.S. and the Central Rocky Mountain region in particular. The approach included an analysis of geologic sequestration formations under the Craig Power Station in northwestern Colorado, and application or extrapolation of those local-scale results to the broader region. A ten-step protocol for geologic carbon storage site characterization was a primary outcome of this project.

McPherson, Brian; Matthews, Vince

2013-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

Star Formation in Isolated Disk Galaxies. II. Schmidt Laws and Efficiency of Gravitational Collapse  

E-Print Network [OSTI]

(Abridged). We model gravitational instability in a wide range of isolated disk galaxies, using GADGET, a three-dimensional, smoothed particle hydrodynamics code. The model galaxies include a dark matter halo and a disk of stars and isothermal gas. The global Schmidt law observed in disk galaxies is quantitatively reproduced by our models. We find that the surface density of star formation rate directly correlates with the strength of local gravitational instability. The local Schmidt laws of individual galaxies in our models show clear evidence of star formation thresholds. Our results suggest that the non-linear development of gravitational instability determines the local and global Schmidt laws, and the star formation thresholds.

Yuexing Li; Mordecai-Mark Mac Low; Ralf S. Klessen

2006-02-21T23:59:59.000Z

222

Development of Large Format Lithium Ion Cells with Higher Energy...  

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

Large Format Lithium Ion Cells with Higher Energy Density Development of Large Format Lithium Ion Cells with Higher Energy Density 2013 DOE Hydrogen and Fuel Cells Program and...

223

Cryogenic CO2 Formation on Oxidized Gold Clusters Synthesized...  

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

Cryogenic CO2 Formation on Oxidized Gold Clusters Synthesized via Reactive Layer Assisted Deposition. Cryogenic CO2 Formation on Oxidized Gold Clusters Synthesized via Reactive...

224

ash formation deposition: Topics by E-print Network  

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

deep-water depositional systems : the upper Miocene Upper Mount messenger formation, Taranaki Basin, New Zealand and Pliocene Repetto and Pico formations, Ventura Basin,...

225

ash deposit formation: Topics by E-print Network  

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

deep-water depositional systems : the upper Miocene Upper Mount messenger formation, Taranaki Basin, New Zealand and Pliocene Repetto and Pico formations, Ventura Basin,...

226

Atomistic Model for the Polyamide Formation from ?-Lactam...  

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

Model for the Polyamide Formation from ?-Lactam Catalyzed by Candida Antarctica Lipase B. Atomistic Model for the Polyamide Formation from ?-Lactam Catalyzed by Candida...

227

Biogenic formation of photoactive arsenic-sulfide nanotubes by...  

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

formation of photoactive arsenic-sulfide nanotubes by Shewanella sp. strain HN-41 . Biogenic formation of photoactive arsenic-sulfide nanotubes by Shewanella sp. strain HN-41 ....

228

Multifunctional, Inorganic-Filled Separators for Large Format...  

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

& Publications Multifunctional, Inorganic-Filled Separators for Large Format, Li-ion Batteries Multifunctional, Inorganic-Filled Separators for Large Format, Li-ion Batteries...

229

Multifunctional, Inorganic-Filled Separators for Large Format...  

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

Multifunctional, Inorganic-Filled Separators for Large Format, Li-ion Batteries Multifunctional, Inorganic-Filled Separators for Large Format, Li-ion Batteries 2012 DOE Hydrogen...

230

Control of Formation and Cellular Detachment from Shewanella...  

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

Formation and Cellular Detachment from Shewanella oneidensis MR-1 Biofilms by Cyclic di-GMP. Control of Formation and Cellular Detachment from Shewanella oneidensis MR-1 Biofilms...

231

Fayalite Dissolution and Siderite Formation in Water-Saturated...  

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

Fayalite Dissolution and Siderite Formation in Water-Saturated Supercritical CO2. Fayalite Dissolution and Siderite Formation in Water-Saturated Supercritical CO2. Abstract:...

232

Energy Secretary Moniz Announces Formation of Nuclear Energy...  

Office of Environmental Management (EM)

Announces Formation of Nuclear Energy Tribal Working Group Energy Secretary Moniz Announces Formation of Nuclear Energy Tribal Working Group December 12, 2014 - 2:00pm Addthis News...

233

Hydrogen Bubbles and Formation of Nanoporous Silicon during Electroche...  

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

Bubbles and Formation of Nanoporous Silicon during Electrochemical Etching. Hydrogen Bubbles and Formation of Nanoporous Silicon during Electrochemical Etching. Abstract: Many...

234

Brown carbon formation from ketoaldehydes of biogenic monoterpenes...  

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

Brown carbon formation from ketoaldehydes of biogenic monoterpenes. Brown carbon formation from ketoaldehydes of biogenic monoterpenes. Abstract: Sources and chemical composition...

235

Plans, Implementation, and Results  

Broader source: Energy.gov [DOE]

The Bioenergy Technologies Office carries out technology research, development, and deployment through an ongoing process of planning and analysis, implementation, and review. This Web page includes links to documents that support and document the program management process, and the results and public benefits that derive from it.

236

Fluctuation Results from PHENIX  

E-Print Network [OSTI]

The PHENIX Experiment at the Relativistic Heavy Ion Collider has made measurements of event-by-event fluctuations in the net charge, the mean transverse momentum, and the charged particle multiplicity as a function of collision energy, centrality, and transverse momentum in heavy ion collisions. The results of these measurements will be reviewed and discussed.

J. T. Mitchell

2005-11-18T23:59:59.000Z

237

The Formation and Evolution of Prestellar Cores  

E-Print Network [OSTI]

Improving our understanding of the initial conditions and earliest stages of star formation is crucial to gain insight into the origin of stellar masses, multiple systems, and protoplanetary disks. We review the properties of low-mass dense cores as derived from recent millimeter/submillimeter observations of nearby molecular clouds and discuss them in the context of various contemporary scenarios for cloud core formation and evolution. None of the extreme scenarios can explain all observations. Pure laminar ambipolar diffusion has relatively long growth times for typical ionization levels and has difficulty satisfying core lifetime constraints. Purely hydrodynamic pictures have trouble accounting for the inefficiency of core formation and the detailed velocity structure of individual cores. A possible favorable scenario is a mixed model involving gravitational fragmentation of turbulent molecular clouds close to magnetic criticality. The evolution of the magnetic field and angular momentum in individual cloud cores after the onset of gravitational collapse is also discussed. In particular, we stress the importance of radiation-magnetohydrodynamical processes and resistive MHD effects during the protostellar phase. We also emphasize the role of the formation of the short-lived first (protostellar) core in providing a chance for sub-fragmentation into binary systems and triggering MHD outflows. Future submillimeter facilities such as Herschel and ALMA will soon provide major new observational constraints in this field. On the theoretical side, an important challenge for the future will be to link the formation of molecular clouds and prestellar cores in a coherent picture.

Philippe André; Shantanu Basu; Shu-ichiro Inutsuka

2008-01-28T23:59:59.000Z

238

EXFOR BASICS A SHORT GUIDE TO THE NEUTRON REACTION DATA EXCHANGE FORMAT.  

SciTech Connect (OSTI)

This manual is intended as a guide to users of nuclear reaction data compiled in the EXFOR format, and is not intended as a complete guide to the EXFOR System. EXFOR is the exchange format designed to allow transmission of nuclear reaction data between the Nuclear Reaction Data Centers. In addition to storing the data and its' bibliographic information, experimental information is also compiled. The status (e.g., the source of the data) and history (e.g., date of last update) of the data set is also included. EXFOR is designed for flexibility in order to meet the diverse needs of the nuclear reaction data centers. It was originally conceived for the exchange of neutron data and was developed through discussions among personnel from centers situated in Saclay, Vienna, Livermore and Brookhaven. It was accepted as the official exchange format of the neutron data centers at Saclay, Vienna, Brookhaven and Obninsk, at a meeting held in November 1969.3 As a result of two meetings held in 1975 and 1976 and attended by several charged-particle data centers, the format was further developed and adapted to cover all nuclear reaction data. The exchange format should not be confused with a center-to-user format. Although users may obtain data from the centers in the EXFOR format, other center-to-user formats have been developed to meet the needs of the users within each center's own sphere of responsibility. The EXFOR format, as outlined, allows a large variety of numerical data tables with explanatory and bibliographic information to be transmitted in a format: l that is machine-readable (for checking and indicating possible errors); l that can be read by personnel (for passing judgment on and correcting errors). The data presently included in the EXFOR exchange file include: a complete compilation of experimental neutron-induced reaction data, a selected compilation of charged-particle-induced reaction data, a selected compilation of photon-induced reaction data.

MCLANE,V.; NUCLEAR DATA CENTER NETWORK

2000-05-19T23:59:59.000Z

239

EXFOR BASICS A SHORT GUIDE TO THE NEUTRON REACTION DATA EXCHANGE FORMAT.  

SciTech Connect (OSTI)

This manual is intended as a guide to users of nuclear reaction data compiled in the EXFOR format, and is not intended as a complete guide to the EXFOR System. EXFOR is the exchange format designed to allow transmission of nuclear reaction data between the Nuclear Reaction Data Centers. In addition to storing the data and its' bibliographic information, experimental information is also compiled. The status (e.g., the source of the data) and history (e.g., date of last update) of the data set is also included. EXFOR is designed for flexibility in order to meet the diverse needs of the nuclear reaction data centers. It was originally conceived for the exchange of neutron data and was developed through discussions among personnel from centers situated in Saclay, Vienna, Livermore and Brookhaven. It was accepted as the official exchange format of the neutron data centers at Saclay, Vienna, Brookhaven and Obninsk, at a meeting held in November 1969. As a result of two meetings held in 1975 and 1976 and attended by several charged-particle data centers, the format was further developed and adapted to cover all nuclear reaction data. The exchange format should not be confused with a center-to-user format. Although users may obtain data from the centers in the EXFOR format, other center-to-user formats have been developed to meet the needs of the users within each center's own sphere of responsibility. The EXFOR format, as outlined, allows a large variety of numerical data tables with explanatory and bibliographic information to be transmitted in a format: that is machine-readable (for checking and indicating possible errors); that can be read by personnel (for passing judgment on and correcting errors). The data presently included in the EXFOR exchange file include: a complete compilation of experimental neutron-induced reaction data, a selected compilation of charged-particle-induced reaction data, a selected compilation of photon-induced reaction data.

MCLANE,V.; NUCLEAR DATA CENTER NETWORK

2000-05-19T23:59:59.000Z

240

Double Chooz: Latest results  

E-Print Network [OSTI]

The latest results from the Double Chooz experiment on the neutrino mixing angle $\\theta_{13}$ are presented. A detector located at an average distance of 1050 m from the two reactor cores of the Chooz nuclear power plant has accumulated a live time of 467.90 days, corresponding to an exposure of 66.5 GW-ton-year (reactor power $\\times$ detector mass $\\times$ live time). A revised analysis has boosted the signal efficiency and reduced the backgrounds and systematic uncertainties compared to previous publications, paving the way for the two detector phase. The measured $\\sin^2 2\\theta_{13} = 0.090^{+0.032}_{-0.029}$ is extracted from a fit to the energy spectrum. A deviation from the prediction above a visible energy of 4 MeV is found, being consistent with an unaccounted reactor flux effect, which does not affect the $\\theta_{13}$ result. A consistent value of $\\theta_{13}$ is measured in a rate-only fit to the number of observed candidates as a function of the reactor power, confirming the robustness of the result.

J. I. Crespo-Anadón; for the Double Chooz collaboration

2014-12-11T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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

Efficiencies of Low-Mass Star and Star Cluster Formation  

E-Print Network [OSTI]

Using a quantitative model for bipolar outflows driven by hydromagnetic protostellar winds, we calculate the efficiency of star formation assuming that available gas is either converted into stars or ejected in outflows. We estimate the efficiency of a single star formation event in a protostellar core, finding 25%-70% for cores with various possible degrees of flattening. The core mass function and the stellar initial mass function have similar slopes, because the efficiency is not sensitive to its parameters. We then consider the disruption of gas from a dense molecular clump in which a cluster of young stars is being born. In both cases, we present analytical formulae for the efficiencies that compare favorably against observations and, for clusters, against numerical simulations. We predict efficiencies in the range 30%-50% for the regions that form clusters of low-mass stars. In our model, star formation and gas dispersal happen concurrently. We neglect the destructive effects of massive stars: our results are therefore upper limits to the efficiency in regions more massive than about 3000 Msun.

Christopher D. Matzner; Christopher F. McKee

2000-07-25T23:59:59.000Z

242

The Formation and Fragmentation of Primordial Molecular Clouds  

E-Print Network [OSTI]

Many questions in physical cosmology regarding the thermal history of the intergalactic medium, chemical enrichment, reionization, etc. are thought to be intimately related to the nature and evolution of pregalactic structure. In particular the efficiency of primordial star formation and the primordial IMF are of special interest. We present results from high resolution three--dimensional adaptive mesh refinement simulations that follow the collapse of primordial molecular clouds and their subsequent fragmentation within a cosmologically representative volume. Comoving scales from 128 kpc down to 1 pc are followed accurately. Dark matter dynamics, hydrodynamics and all relevant chemical and radiative processes (cooling) are followed self-consistently for a cluster normalized CDM structure formation model. Primordial molecular clouds with ~10^5 solar masses are assembled by mergers of multiple objects that have formed hydrogen molecules in the gas phase with a fractional abundance of ~10^-4. As the subclumps merge cooling lowers the temperature to ~200 Kelvin in a `cold pocket' at the center of the halo. Within this cold pocket, a quasi-hydrostatically contracting core with ~200 solar mass and number densities > 10^5 cm^-3 is found. We find that less than 1% of the primordial gas in such small scale structures cools and collapses to sufficiently high densities to be available for primordial star formation. Furthermore, it is worthwhile to note that this study achieved the highest dynamic range covered by structured adaptive mesh techniques in cosmological hydrodynamics to date.

Tom Abel; Greg L. Bryan; Michael L. Norman

2000-02-07T23:59:59.000Z

243

Ion-beam-induced damage formation in CdTe  

SciTech Connect (OSTI)

Damage formation in <111>- and <112>-oriented CdTe single crystals irradiated at room temperature and 15 K with 270 keV Ar or 730 keV Sb ions was investigated in situ using Rutherford backscattering spectroscopy (RBS) in channeling configuration. Defect profiles were calculated from the RBS spectra using the computer code DICADA and additional energy-dependent RBS measurements were performed to identify the type of defects. At both temperatures no formation of a buried amorphous layer was detected even after prolonged irradiation with several 10{sup 16} ions/cm{sup 2}. The fact that CdTe is not rendered amorphous even at 15 K suggests that the high resistance to amorphization is caused by the high ionicity of CdTe rather than thermal effects. The calculated defect profiles show the formation of a broad defect distribution that extends much deeper into the crystal than the projected range of the implanted ions at both temperatures. The post-range defects in CdTe thus do not seem to be of thermal origin either, but are instead believed to result from migration driven by the electronic energy loss.

Rischau, C. W.; Schnohr, C. S.; Wendler, E.; Wesch, W. [Institut fuer Festkoerperphysik, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, D-07743 Jena (Germany)

2011-06-01T23:59:59.000Z

244

Hafnium silicide formation on Si(100) upon annealing  

SciTech Connect (OSTI)

High dielectric constant materials, such as HfO{sub 2}, have been extensively studied as alternatives to SiO{sub 2} in new generations of Si based devices. Hf silicate/silicide formation has been reported in almost all literature studies of Hf based oxides on Si, using different methods of preparation. A silicate interface resembles close to the traditional Si/SiO{sub 2}. The silicate very likely forms a very sharp interface between the Si substrate and the metal oxide, and would be suitable for device applications. However, the thermal instability of the interfacial silicate/oxide film leads to silicidation, causing a dramatic loss of the gate oxide integrity. Despite the importance of the Hf silicide surface and interface with Si, only a few studies of this surface are present in the literature, and a structural determination of the surface has not been reported. This paper reports a study of the Hf silicide formation upon annealing by using a combination of XPS, LEED, and x-ray photoelectron diffraction (XPD) analyses. Our results clearly indicate the formation of a unique ordered Hf silicide phase (HfSi{sub 2}), which starts to crystallize when the annealing temperature is higher than 550 deg. C.

Siervo, A. de [Experimentelle Physik 1, Universitaet Dortmund, Otto-Hahn-Str. 4, D 44221 Dortmund (Germany); Laboratorio Nacional de Luz Sincrotron, Caixa Postal 6192, 13084-971, Campinas, Sao Paulo (Brazil); Fluechter, C. R.; Weier, D.; Schuermann, M.; Dreiner, S.; Westphal, C. [Experimentelle Physik 1, Universitaet Dortmund, Otto-Hahn-Str. 4, D 44221 Dortmund (Germany); Carazzolle, M. F.; Pancotti, A.; Landers, R.; Kleiman, G. G. [Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas, Caixa Postal 6165, 13083-970, Campinas, Sao Paulo (Brazil)

2006-08-15T23:59:59.000Z

245

Unveiling the Formation of Massive Galaxies  

E-Print Network [OSTI]

Massive galaxies, such as nearby ellipticals, have relatively low number densities, yet they host the majority of the stellar mass in the universe. Understanding their origin is a central problem of galaxy formation. Age dating of stellar populations found in modern ellipticals, and observations of star formation in high redshift galaxies, allow us to determine roughly when these systems formed. These age diagnostics however do not tell us what triggered star formation, or how galaxies form as opposed to simply when. Recent analyses of the structures of z > 2 ultraviolet selected galaxies reveal that major galaxy mergers are a likely method for forming some massive galaxies. There are however galaxy populations at high redshift (z > 2), namely infrared and sub-millimeter bright systems, whose evolutionary relationship to modern ellipticals is still uncertain. An improved characterization of these and other high redshift galaxy populations is achievable with large infrared imaging and spectroscopic surveys.

Christopher J. Conselice

2004-04-21T23:59:59.000Z

246

In situ oxidation of subsurface formations  

DOE Patents [OSTI]

Methods and systems for treating a hydrocarbon containing formation described herein include providing heat to a first portion of the formation from a plurality of heaters in the first portion, producing produced through one or more production wells in a second portion of the formation, reducing or turning off heat provided to the first portion after a selected time, providing an oxidizing fluid through one or more of the heater wells in the first portion, providing heat to the first portion and the second portion through oxidation of at least some hydrocarbons in the first portion, and producing fluids through at least one of the production wells in the second portion. The produced fluids may include at least some oxidized hydrocarbons produced in the first portion.

Beer, Gary Lee (Houston, TX); Mo, Weijian (Sugar Land, TX); Li, Busheng (Houston, TX); Shen, Chonghui (Calgary, CA)

2011-01-11T23:59:59.000Z

247

Formation of Cyanoformaldehyde in the interstellar space  

E-Print Network [OSTI]

Cyanoformaldehyde (HCOCN) molecule has recently been suspected towards the Sagittarius B2(N) by the Green Bank telescope, though a confirmation of this observation has not yet been made. In and around a star forming region, this molecule could be formed by the exothermic reaction between two abundant interstellar species, H$_2$CO and CN. Till date, the reaction rate coefficient for the formation of this molecule is unknown. Educated guesses were used to explain the abundance of this molecule by chemical modeling. In this paper, we carried out quantum chemical calculations to find out empirical rate coefficients for the formation of HCOCN and different chemical properties during the formation of HCOCN molecules. Though HCOCN is stable against unimolecular decomposition, this gas phase molecule could be destroyed by many other means, like: ion-molecular reactions or by the effect of cosmic rays. Ion-molecular reaction rates are computed by using the capture theories. We have also included the obtained rate coef...

Das, Ankan; Chakrabarti, Sandip K; Saha, Rajdeep; Chakrabarti, Sonali

2013-01-01T23:59:59.000Z

248

Astronomy 9603B -Star Formation Star Formation: Astronomy 9603B (Winter 2012)  

E-Print Network [OSTI]

Astronomy 9603B - Star Formation Star Formation: Astronomy 9603B (Winter 2012) Lecturer: Prof below. Contact information: Martin Houde Associate Professor Department of Physics and Astronomy Room 207, Physics and Astronomy Building E-mail: mhoude2@uwo.ca Phone: (519) 661-2111 x: 86711 (office) Fax

Lennard, William N.

249

Planet Formation: Planet Formation: Evolution of The Solar NebulaEvolution of The Solar Nebula  

E-Print Network [OSTI]

Planet Formation: Planet Formation: Evolution of The Solar NebulaEvolution of The Solar Nebula #12;Evolution of the Solar NebulaEvolution of the Solar Nebula 1.1. Nebula collapses into a disk 2000 KTemperatures near the Sun reach 2000 K #12;Evolution of the Solar NebulaEvolution of the Solar

Herrick, Robert R.

250

Subtask 1.8 - Investigation of Improved Conductivity and Proppant Applications in the Bakken Formation  

SciTech Connect (OSTI)

Given the importance of hydraulic fracturing and proppant performance for development of the Bakken and Three Forks Formations within the Williston Basin, a study was conducted to evaluate the key factors that may result in conductivity loss within the reservoirs. Various proppants and reservoir rock cores were exposed to several different fracturing and formation fluids at reservoir conditions. The hardness of the rock cores and the strength of the proppants were evaluated prior to and following fluid exposure. In addition, the conductivity of various proppants, as well as formation embedment and spalling, was evaluated at reservoir temperatures and pressures using actual reservoir rock cores. The results of this work suggest that certain fluids may affect both rock and proppant strength, and therefore, fluid exposure needs to be considered in the field. In addition, conductivity decreases within the Bakken Formation appear to be a function of a variety of factors, including proppant and rock strength, as well as formation embedment and spalling. The results of this study highlight the need for advanced conductivity testing, coupled with quantification of formation embedment and spalling. Given the importance of proppant performance on conductivity loss and, ultimately, oil recovery, better understanding the effects of these various factors on proppant and rock strength in the field is vital for more efficient production within unconventional oil and gas reservoirs.

Bethany Kurz; Darren Schmidt; Steven Smith Christopher Beddoe; Corey Lindeman; Blaise Mibeck

2012-07-31T23:59:59.000Z

251

Data from selected Almond Formation outcrops -- Sweetwater County, Wyoming  

SciTech Connect (OSTI)

The objectives of this research program are to: (1) determine the reservoir characteristics and production problems of shoreline barrier reservoirs; and (2) develop methods and methodologies to effectively characterize shoreline barrier reservoirs to predict flow patterns of injected and produced fluids. Two reservoirs were selected for detailed reservoir characterization studies -- Bell Creek field, Carter County, Montana, that produces from the Lower Cretaceous (Albian-Cenomanian) Muddy Formation, and Patrick Draw field, Sweetwater County, Wyoming that produces from the Upper Cretaceous (Campanian) Almond Formation of the Mesaverde Group. An important component of the research project was to use information from outcrop exposures of the producing formations to study the spatial variations of reservoir properties and the degree to which outcrop information can be used in the construction of reservoir models. A report similar to this one presents the Muddy Formation outcrop data and analyses performed in the course of this study (Rawn-Schatzinger, 1993). Two outcrop localities, RG and RH, previously described by Roehler (1988) provided good exposures of the Upper Almond shoreline barrier facies and were studied during 1990--1991. Core from core well No. 2 drilled approximately 0.3 miles downdip of outcrop RG was obtained for study. The results of the core study will be reported in a separate volume. Outcrops RH and RG, located about 2 miles apart were selected for detailed description and drilling of core plugs. One 257-ft-thick section was measured at outcrop RG, and three sections {approximately}145 ft thick located 490 and 655 feet apart were measured at the outcrop RH. Cross-sections of these described profiles were constructed to determine lateral facies continuity and changes. This report contains the data and analyses from the studied outcrops.

Jackson, S.R.; Rawn-Schatzinger, V.

1993-12-01T23:59:59.000Z

252

Aromatics oxidation and soot formation in flames  

SciTech Connect (OSTI)

This project is concerned with the kinetics and mechanisms of aromatics oxidation and soot and fullerenes formation in flames. The scope includes detailed measurements of profiles of stable and radical species concentrations in low-pressure one-dimensional premixed flames. Intermediate species identifications and mole fractions, fluxes, and net reaction rates calculated from the measured profiles are used to test postulated reaction mechanisms. Particular objectives are to identify and to determine or confirm rate constants for the main benzene oxidation reactions in flames, and to characterize fullerenes and their formation mechanisms and kinetics.

Howard, J.B.; Pope, C.J.; Shandross, R.A.; Yadav, T. [Massachusetts Institute of Technology, Cambridge (United States)

1993-12-01T23:59:59.000Z

253

On Superheavy Element Formation and Beyond  

SciTech Connect (OSTI)

Low energy collisions of very heavy nuclei (238U+238U, 232Th+250Cf and 238U+248Cm) have been studied within the realistic dynamical model based on multi-dimensional Langevin equations. Large charge and mass transfer was found due to the ''inverse quasi-fission'' process leading to formation of survived superheavy long-lived neutron-rich nuclei. In many events lifetime of the composite system consisting of two touching nuclei turns out to be rather long; sufficient for spontaneous positron formation from super-strong electric field, a fundamental QED process.

Zagrebaev, Valery [Flerov Laboratory of Nuclear Reaction, JINR, 141980 Dubna (Russian Federation); Greiner, Walter [Frankfurt Institute for Advanced Studies, J.W. Goethe-Universitaet, 60325 Frankfurt (Germany)

2007-02-12T23:59:59.000Z

254

Induction heaters used to heat subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation includes an elongated electrical conductor located in the subsurface formation. The electrical conductor extends between at least a first electrical contact and a second electrical contact. A ferromagnetic conductor at least partially surrounds and at least partially extends lengthwise around the electrical conductor. The electrical conductor, when energized with time-varying electrical current, induces sufficient electrical current flow in the ferromagnetic conductor such that the ferromagnetic conductor resistively heats to a temperature of at least about 300.degree. C.

Nguyen, Scott Vinh (Houston, TX); Bass, Ronald M. (Houston, TX)

2012-04-24T23:59:59.000Z

255

Parallel heater system for subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation is disclosed. The system includes a plurality of substantially horizontally oriented or inclined heater sections located in a hydrocarbon containing layer in the formation. At least a portion of two of the heater sections are substantially parallel to each other. The ends of at least two of the heater sections in the layer are electrically coupled to a substantially horizontal, or inclined, electrical conductor oriented substantially perpendicular to the ends of the at least two heater sections.

Harris, Christopher Kelvin (Houston, TX); Karanikas, John Michael (Houston, TX); Nguyen, Scott Vinh (Houston, TX)

2011-10-25T23:59:59.000Z

256

Creating fluid injectivity in tar sands formations  

DOE Patents [OSTI]

Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons including mobilized hydrocarbons are produced from the portion.

Stegemeier, George Leo; Beer, Gary Lee; Zhang, Etuan

2012-06-05T23:59:59.000Z

257

Creating fluid injectivity in tar sands formations  

DOE Patents [OSTI]

Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons are produced from the portion.

Stegemeier, George Leo; Beer, Gary Lee; Zhang, Etuan

2010-06-08T23:59:59.000Z

258

Core Measure Results  

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-Up fromDepartmentTieCelebrate EarthEnergyDistrict EnergyCensus,Core Measure Results

259

Organic Separation Test Results  

SciTech Connect (OSTI)

Separable organics have been defined as “those organic compounds of very limited solubility in the bulk waste and that can form a separate liquid phase or layer” (Smalley and Nguyen 2013), and result from three main solvent extraction processes: U Plant Uranium Recovery Process, B Plant Waste Fractionation Process, and Plutonium Uranium Extraction (PUREX) Process. The primary organic solvents associated with tank solids are TBP, D2EHPA, and NPH. There is concern that, while this organic material is bound to the sludge particles as it is stored in the tanks, waste feed delivery activities, specifically transfer pump and mixer pump operations, could cause the organics to form a separated layer in the tank farms feed tank. Therefore, Washington River Protection Solutions (WRPS) is experimentally evaluating the potential of organic solvents separating from the tank solids (sludge) during waste feed delivery activities, specifically the waste mixing and transfer processes. Given the Hanford Tank Waste Treatment and Immobilization Plant (WTP) waste acceptance criteria per the Waste Feed Acceptance Criteria document (24590-WTP-RPT-MGT-11-014) that there is to be “no visible layer” of separable organics in the waste feed, this would result in the batch being unacceptable to transfer to WTP. This study is of particular importance to WRPS because of these WTP requirements.

Russell, Renee L.; Rinehart, Donald E.; Peterson, Reid A.

2014-09-22T23:59:59.000Z

260

First result from Qweak  

SciTech Connect (OSTI)

Initial results are presented from the recently-completed Q{sub weak} experiment at Jefferson Lab. The goal is a precise measurement of the proton's weak charge Q{sub w}{sup p}, to yield a test of the standard model and to search for evidence of new physics. The weak charge is extracted from the parity-violating asymmetry in elastic {rvec e}p scattering at low momentum transfer, Q{sup 2} = 0.025?GeV{sup 2}. A 180 {micro} A longitudinally-polarized 1.16 GeV electron beam was scattered from a 35 cm long liquid hydrogen at small angles, 6 {degrees} < {theta} < 12 {degrees} Scattered electrons were analyzed in a toroidal magnetic field and detected using an array of eight Cerenkov detectors arranged symmetrically about the beam axis. The initial result, from 4% of the complete data set, is Q{sub W}{sup p} = 0.064 ± 0.012, in excellent agreement with the standard model expectation. Full analysis of the data is expected to yield a value for the weak charge to about 5% precision.

Armstrong, David S. [William and Mary College, JLAB

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "multicolor result formats" 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
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261

Recent Results from HAPPEX  

SciTech Connect (OSTI)

New measurements of the parity-violating asymmetry in elastic scattering of 3GeV electrons off hydrogen and helium-4 targets at theta{sub lab} = 6 degrees are reported. The helium-4 result is A = (+6.40 {+-} 0.23 (stat) {+-} 0.12 (syst)) * 10{sup -6}. The hydrogen result is A = (-1.58 {+-} 0.12 (stat) {+-} 0.04 (syst)) * 10{sup -6}. The asymmetry for hydrogen is a function of a linear combination of G{sub E}{sup s} and G{sub M}{sup s}, the strange quark contributions to the electric and magnetic form factors of the nucleon respectively, and that for helium-4 is a function solely of G{sub E}{sup s}. The combination of the two measurements separates G{sub E}{sup s} and G{sub M}{sup s} and provide new limits on the role of strange quarks in the nucleon charge and magnetization distributions. We extract G{sub E}{sup s} = 0.002 {+-} 0.014 {+-} 0.007 at Q{sup 2} = 0.077 GeV{sup 2} and G{sub E}{sup s} + 0.09 G{sub M}{sup s} = 0.007 {+-} 0.011 {+-} 0.006 at Q{sup 2} = 0.109 GeV{sup 2}.

Robert Michaels

2006-09-18T23:59:59.000Z

262

Oxygen line formation in 3D hydrodynamical model atmospheres  

E-Print Network [OSTI]

The formation of [O I], O I and OH lines in metal-poor stars has been studied by means of 3D hydrodynamical model atmospheres. For O I detailed 3D non-LTE calculations have been performed. While the influence of 3D model atmospheres is minor for [O I] and O I lines, the very low temperatures encountered at low metallicities have a drastic impact on the OH lines. As a result, the derived O abundances are found to be systematically overestimated in 1D analyses, casting doubts on the recent claims for a monotonic increase in [O/Fe] towards lower metallicities.

M. Asplund

2000-11-02T23:59:59.000Z

263

Quantifying the Drivers of Star Formation on Galactic Scales. I. The Small Magellanic Cloud  

E-Print Network [OSTI]

We use the star formation history of the Small Magellanic Cloud (SMC) to place quantitative limits on the effect of tidal interactions and gas infall on the star formation and chemical enrichment history of the SMC. The coincident timing of two recent (driver of star formation, but is only near the SMC during the most recent burst. The poorly constrained LMC-SMC orbit is our principal uncertainty. To explore the correspondence between bursts and MW pericenter passages further, we model star formation in the SMC using a combination of continuous and tidally-triggered star formation. The behavior of the tidally-triggered mode is a strong inverse function of the SMC-MW separation (preferred behavior ~ r^-5, resulting in a factor of ~100 difference in the rate of tidally-triggered star formation at pericenter and apocenter). Despite the success of these closed-box evolutionary models in reproducing the recent SMC star formation history and current chemical abundance, they have some systematic shortcomings that are remedied by postulating that a sizable infall event (~ 50% of the total gas mass) occured about 4 Gyr ago. Regardless of whether this infall event is included, the fraction of stars in the SMC that formed via a tidally triggered mode is > 10% and could be as large as 70%.

Dennis Zaritsky; Jason Harris

2003-12-04T23:59:59.000Z

264

Power systems utilizing the heat of produced formation fluid  

DOE Patents [OSTI]

Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method includes treating a hydrocarbon containing formation. The method may include providing heat to the formation; producing heated fluid from the formation; and generating electricity from at least a portion of the heated fluid using a Kalina cycle.

Lambirth, Gene Richard (Houston, TX)

2011-01-11T23:59:59.000Z

265

UAV Flight Formation Control Jose Alfredo GUERRERO  

E-Print Network [OSTI]

UAV Flight Formation Control Jose Alfredo GUERRERO Rogelio LOZANO Version 0.5, hal-00923127,version. Modeling and Control of Mini UAV . . . . . . . . . . . . . . . . . 1 G. Flores , J.A. Guerrero , J2014 #12;x hal-00923127,version1-2Jan2014 #12;Chapter 1 Modeling and Control of Mini UAV This Chapter

Paris-Sud XI, Université de

266

The formation of the solar system  

E-Print Network [OSTI]

The solar system started to form about 4.56 Gyr ago and despite the long intervening time span, there still exist several clues about its formation. The three major sources for this information are meteorites, the present solar system structure and the planet-forming systems around young stars. In this introduction we give an overview of the current understanding of the solar system formation from all these different research fields. This includes the question of the lifetime of the solar protoplanetary disc, the different stages of planet formation, their duration, and their relative importance. We consider whether meteorite evidence and observations of protoplanetary discs point in the same direction. This will tell us whether our solar system had a typical formation history or an exceptional one. There are also many indications that the solar system formed as part of a star cluster. Here we examine the types of cluster the Sun could have formed in, especially whether its stellar density was at any stage hi...

Pfalzner, S; Gounelle, M; Johansen, A; Muenker, C; Lacerda, P; Zwart, S Portegies; Testi, L; Trieloff, M; Veras, D

2015-01-01T23:59:59.000Z

267

Cluster Formation in Contracting Molecular Clouds  

E-Print Network [OSTI]

We explore, through a simplified, semi-analytic model, the formation of dense clusters containing massive stars. The parent cloud spawning the cluster is represented as an isothermal sphere. This sphere is in near force balance between self-gravity and turbulent pressure. Self-gravity, mediated by turbulent dissipation, drives slow contraction of the cloud, eventually leading to a sharp central spike in density and the onset of dynamical instability. We suggest that, in a real cloud, this transition marks the late and rapid production of massive stars. We also offer an empirical prescription, akin to the Schmidt law, for low-mass star formation in our contracting cloud. Applying this prescription to the Orion Nebula Cluster, we are able to reproduce the accelerating star formation previously inferred from the distribution of member stars in the HR diagram. The cloud turns about 10 percent of its mass into low-mass stars before becoming dynamically unstable. Over a cloud free-fall time, this figure drops to 1 percent, consistent with the overall star formation efficiency of molecular clouds in the Galaxy.

Eric Huff; Steven Stahler

2007-08-07T23:59:59.000Z

268

Format: A4_20070715 Press Release  

E-Print Network [OSTI]

delivery, global warming. Over the 20 year history of INCOSE Systems Engineering has developed and matured and valued for projects of all sizes and at all levels of problem solving from providing integrated to enabling holistic solutions to global challenges. INCOSE has grown significantly since its formation

de Weck, Olivier L.

269

MODELING OF ALUMINUM NANOPARTICLE FORMATION R. Schefflan  

E-Print Network [OSTI]

MODELING OF ALUMINUM NANOPARTICLE FORMATION R. Schefflan D. Kalyon S. Kovenklioglu Stevens Picatinny Arsenal's process for making alumina coated nanoparticles of aluminum involves the conversion of gaseous aluminum, in the presence of helium carrier gas, to solid nanoparticles and their subsequent

270

Star Formation Histories in the Local Group  

E-Print Network [OSTI]

Deep color magnitude diagrams extending to the main sequence provide the most direct measure of the detailed star formation history in a stellar population. With large investments of observing time, HST can obtain such data for populations out to 1 Mpc, but its field of view is extremely small in comparison to the size of Local Group galaxies. This limitation severely constrains our understanding of galaxy formation. For example, the largest galaxy in the Local Group, Andromeda, offers an ideal laboratory for studying the formation of large spiral galaxies, but the galaxy shows substructure on a variety of scales, presumably due to its violent merger history. Within its remaining lifetime, HST can only sample a few sight-lines through this complex galaxy. In contrast, a wide field imager could provide a map of Andromeda's halo, outer disk, and tidal streams, revealing the spatially-dependent star formation history in each structure. The same data would enable many secondary studies, such as the age variation in Andromeda's globular cluster system, gigantic samples of variable stars, and microlensing tracers of the galaxy's dark matter distribution.

Thomas M. Brown

2004-07-09T23:59:59.000Z

271

Varying heating in dawsonite zones in hydrocarbon containing formations  

SciTech Connect (OSTI)

A method for treating an oil shale formation comprising dawsonite includes assessing a dawsonite composition of one or more zones in the formation. Heat from one or more heaters is provided to the formation such that different amounts of heat are provided to zones with different dawsonite compositions. The provided heat is allowed to transfer from the heaters to the formation. Fluids are produced from the formation.

Vinegar, Harold J. (Bellaire, TX); Xie, Xueying (Houston, TX); Miller, David Scott (Katy, TX)

2009-07-07T23:59:59.000Z

272

Results from hadron colliders  

SciTech Connect (OSTI)

The present status of hadron collider physics is reviewed. The total cross section for {bar p} + p has been measured at 1.8 TeV: {sigma}{sub tot} = 72.1 {plus minus} 3.3 mb. New data confirm the UA2 observation of W/Z {yields} {bar q}q. Precision measurements of M{sub W} by UA2 and CDF give an average value M{sub W} = 80.13 {plus minus} 0.30 GeV/c{sup 2}. When combined with measurements of M{sub Z} from LEP and SLC this number gives sin{sup 2}{theta}{sub W} = 0.227 {plus minus} 0.006, or m{sub top} = 130{sub {minus}60}{sup +40} GeV/c{sup 2} from the EWK radiative correction term {Delta}r. Evidence for hadron colliders as practical sources of b quarks has been strengthened, while searches for t quarks have pushed the mass above M{sub W}: m{sub top} > 89 GeV/c{sup 2} 95% cl (CDF Preliminary). Searches beyond the standard model based on the missing E{sub T} signature have not yet produced any positive results. Future prospects for the discovery of the top quark in the range m{sub top} < 200 GeV/c{sup 2} look promising. 80 refs., 35 figs., 7 tabs.

Pondrom, L.G. (Wisconsin Univ., Madison, WI (USA))

1990-12-14T23:59:59.000Z

273

LSND neutrino oscillation results  

SciTech Connect (OSTI)

The LSND (Liquid Scintillator Neutrino Detector) experiment at Los Alamos has conducted a search for muon antineutrino {r_arrow} electron antineutrino oscillations using muon neutrinos from antimuon decay at rest. The electron antineutrinos are detected via the reaction electron antineutrino + proton {r_arrow} positron + neutron, correlated with the 2.2-MeV gamma from neutron + proton {r_arrow} deuteron + gamma. The use of tight cuts to identify positron events with correlated gamma rays yields 22 events with positron energy between 36 and 60 MeV and only 4.6 {+-} 0.6 background events. The probability that this excess is due entirely to a statistical fluctuation is 4.1 {times} 10{sup -8}. A chi-squared fit to the entire positron sample results in a total excess of 51.8 {sup +18.7}{sub -16.9} {+-} 8.0 events with positron energy between 20 and 60 MeV. If attributed to muon antineutrino {r_arrow} electron antineutrino oscillations, this corresponds to an oscillation probability (averaged over the experimental energy and spatial acceptance) of (0.31 {+-} 0.12 {+-} 0.05){percent}. 10 refs., 7 figs., 1 tab.

Louis, W.C.; LSND Collaboration

1996-10-01T23:59:59.000Z

274

LSND neutrino oscillation results  

SciTech Connect (OSTI)

The LSND experiment at Los Alamos has conducted a search for {anti v}{sub {mu}} {yields} {anti v}{sub e} oscillations using {anti v}{sub {mu}} from {mu}{sup +} decay at rest. The {anti v}{sub e} are detected via the reaction {anti v}{sub e} p {yields} e{sup +}n, correlated with the 2.2 MeV {gamma} from n p {yields} d {gamma}. The use of tight cuts to identify e{sup +} events with correlated {gamma} rays yielded 22 events with e{sup +} energy between 36 and 60 MeV and only 4.6 {+-} 0.6 background events. The probability that this excess is due entirely to a statistical fluctuation is 4.1 {times} 10{sup {minus}8}. A {chi}{sup 2} fit to the entire e{sup +} sample results in a total excess of 51.8{sub {minus}16.9}{sup +18.7} {+-} 8.0 events with e{sup +} energy between 20 and 60 MeV. If attributed to {anti v}{sub {mu}} {yields} {anti v}{sub e} oscillations, this corresponds to an oscillation probability (averaged over the experimental energy and spatial acceptance) of 0.31 {+-} 0.12 {+-} 0.05%.

White, D.H.; LSND Collaboration

1997-11-01T23:59:59.000Z

275

Stochastic Inflation: New Results  

E-Print Network [OSTI]

This is an old article which has never been posted for public use and which only appeard in a relatively hard-to-get Proceedings of the Sakharov Conference in Moscow (May, 1991). The subject of this article has received a lot of attention in last two years. Although we acknowledge that there has been a very big progress in the field of relating the spectrum of fluctuations to scalar field potentials of inflation models, which have outdated some of our results (particularly because we never took into account the tensor fluctuations which have been shown to be crucial for reconstructing the inflaton potential) we think that some of the other ideas and approaches which we presented in this article maybe still of interest. We did not rewrite the article to include any of the newer approaches and we did not add any of the newer references. The reader is advised to refer to recent papers (for example, see the paper astro-ph/9403001 by Edward Kolb and Sharon Vadas) for state of the art review and up-to-date references. ==The original abstract of the article==: We prove that, in stochastic approach, there exists an equivalence relation between different inflationary models under some redefinition of field and time variables. The postinflationary physics is insensitive to it and one can say that related theories are in fact indistinguishable from the viewpoint

A. Mezhlumian; A. Starobinsky

1994-06-14T23:59:59.000Z

276

Results from SNO  

SciTech Connect (OSTI)

The Sudbury Neutrino Observatory (SNO) is an underground heavy water Cherenkov detector for studying solar neutrinos. SNO is capable of performing both flavor sensitive and flavor blind measurements of the solar neutrino flux. The first charged current (CC) measurement is found to be: {psi}{sub SNO}{sup CC}({nu}{sub e}) = 1.75 {+-} 0.07(stat.){sub -0.11}{sup +0.12}(sys.) {+-} 0.05 (theor.) x 10{sup 6} cm{sup -2}s{sup -1} and the elastic scattering fluxes (ES) is: {psi}{sub SNO}{sup ES}({nu}{sub x}) = 2.39 {+-} 0.34(stat.){sub -0.14}{sup +0.16} (sys.) x 10{sup 6} cm{sup -2}s{sup -1}. The {psi}{sub SNO}{sup CC}({nu}{sub e}) result, when combined with the high statistics elastic scattering (ES) measurement from Super-Kamiokande, provide a strong evidence for solar neutrino flavor transformation (3.3{sigma}). The deduced total solar neutrino flux is in good agreement with standard solar model predictions. No significant distortion in the energy spectrum is observed.

Chan, Yuen-dat

2001-10-01T23:59:59.000Z

277

On Damage Propagation in a Soft Low-Permeability Formation  

SciTech Connect (OSTI)

In this presentation, we develop a mathematical model of fluid flow with changing formation properties. The modification of formation permeability is caused by development of a connected system of fractures. As the fluids are injected or withdrawn from the reservoir, the balance between the pore pressure and the geostatic formation stresses is destroyed. If the strength of the rock is not sufficient to accommodate such an imbalance, the cementing bonds between the rock grains become broken. Such a process is called damage propagation. The micromechanics and the basic mathematical model of damage propagation have been studied in [7]. The theory was further developed in [3], where new nonlocal damage propagation model has been studied. In [2] this theory has been enhanced by incorporation of the coupling between damage propagation and fluid flow. As it has been described above, the forced fluid flow causes changes in the rock properties including formation permeability. At the same time, changing permeability facilitates fluid flow and, therefore, enhances damage propagation. One of the principle concepts introduced in [3] and [2] is the characterization of damage by a dimensionless ratio of the number of broken bonds to the number of bonds in pristine rock per unit volume. It turns out, that the resulting mathematical model consist of a system of two nonlinear parabolic equations. As it has been shown in [6] using modeling of micromechanical properties of sedimentary rocks, at increasing stress the broken bonds coalesce into a system of cracks surrounding practically intact matrix blocks. These blocks have some characteristic size and a regular geometry. The initial microcracks expand, interact with each other, coalesce and form bigger fractures, etc. Therefore, as the damage is accumulated, the growing system of connected fractures determines the permeability of the reservoir rock. Significant oil deposits are stored in low-permeability soft rock reservoirs such as shales, chalks and diatomites [9, 10]. The permeability of the pristine formation matrix in such reservoirs is so low that oil production was impossible until hydraulic fracturing was applied. For development of correct production policy, it is very significant to adequately understand and predict how fast and to what extend the initial damage induced by drilling and hydrofracturing will propagate into the reservoir. The importance of fractures for rock flow properties is a well-established and recognized fact [4, 9, 5]. Different conceptual models have been developed [8]. In this study, we propose a damage propagation model based on a combination of the model of double-porosity and double-permeability medium [4] and a modification of the model of damage propagation developed in [2].

Silin, D.; Patzek, T.; Barenblatt, G.I.

2003-11-18T23:59:59.000Z

278

Induced Core Formation Time in Subcritical Magnetic Clouds by Large-Scale Trans-Alfv\\'enic Flows  

E-Print Network [OSTI]

We clarify the mechanism of accelerated core formation by large-scale nonlinear flows in subcritical magnetic clouds by finding a semi-analytical formula for the core formation time and describing the physical processes that lead to them. Recent numerical simulations show that nonlinear flows induce rapid ambipolar diffusion that leads to localized supercritical regions that can collapse. Here, we employ non-ideal magnetohydrodynamic simulations including ambipolar diffusion for gravitationally stratified sheets threaded by vertical magnetic fields. One of the horizontal dimensions is eliminated, resulting in a simpler two-dimensional simulation that can clarify the basic process of accelerated core formation. A parameter study of simulations shows that the core formation time is inversely proportional to the square of the flow speed when the flow speed is greater than the Alfv\\'en speed. We find a semi-analytical formula that explains this numerical result. The formula also predicts that the core formation t...

Kudoh, Takahiro

2014-01-01T23:59:59.000Z

279

Estimation of in-situ petrophysical properties from wireline formation tester and induction logging measurements: A joint inversion approach  

E-Print Network [OSTI]

-filtrate invasion and formation test. A fully implicit finite- difference black-oil reservoir simulator with brine noise-free and noise-contaminated synthetic data. Joint inversion results provide a quantitative proof

Torres-Verdín, Carlos

280

Low voltage arc formation in railguns  

DOE Patents [OSTI]

A low voltage plasma arc is first established across the rails behind the projectile by switching a low voltage high current source across the rails to establish a plasma arc by vaporizing a fuse mounted on the back of the projectile, maintaining the voltage across the rails below the railgun breakdown voltage to prevent arc formation ahead of the projectile. After the plasma arc has been formed behind the projectile a discriminator switches the full energy bank across the rails to accelerate the projectile. A gas gun injector may be utilized to inject a projectile into the breech of a railgun. The invention permits the use of a gas gun or gun powder injector and an evacuated barrel without the risk of spurious arc formation in front of the projectile.

Hawke, R.S.

1985-08-05T23:59:59.000Z

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281

Low voltage arc formation in railguns  

DOE Patents [OSTI]

A low voltage plasma arc is first established across the rails behind the projectile by switching a low voltage high current source across the rails to establish a plasma arc by vaporizing a fuse mounted on the back of the projectile, maintaining the voltage across the rails below the railgun breakdown voltage to prevent arc formation ahead of the projectile. After the plasma arc has been formed behind the projectile a discriminator switches the full energy bank across the rails to accelerate the projectile. A gas gun injector may be utilized to inject a projectile into the breech of a railgun. The invention permits the use of a gas gun or gun powder injector and an evacuated barrel without the risk of spurious arc formation in front of the projectile. 2 figs.

Hawke, R.S.

1987-11-17T23:59:59.000Z

282

Low voltage arc formation in railguns  

DOE Patents [OSTI]

A low voltage plasma arc is first established across the rails behind the projectile by switching a low voltage high current source across the rails to establish a plasma arc by vaporizing a fuse mounted on the back of the projectile, maintaining the voltage across the rails below the railgun breakdown voltage to prevent arc formation ahead of the projectile. After the plasma arc has been formed behind the projectile a discriminator switches the full energy bank across the rails to accelerate the projectile. A gas gun injector may be utilized to inject a projectile into the breech of a railgun. The invention permits the use of a gas gun or gun powder injector and an evacuated barrel without the risk of spurious arc formation in front of the projectile.

Hawke, Ronald S. (Livermore, CA)

1987-01-01T23:59:59.000Z

283

Carboxylic acid accelerated formation of diesters  

DOE Patents [OSTI]

This invention pertains to accelerating the rate of formation of 1,1-dicarboxylic esters from the reaction of an aldehyde with a carboxylic acid anhydride or a ketene in the presence of a non-iodide containing a strong Bronsted acid catalyst by the addition of a carboxylic acid at about one bar pressure and between about 0 and 80 C in the substantial absence of a hydrogenation or carbonylation catalyst.

Tustin, G.C.; Dickson, T.J.

1998-04-28T23:59:59.000Z

284

Galactosynthesis: Halo Histories, Star Formation, and Disks  

E-Print Network [OSTI]

We investigate the effects of a variety of ingredients that must enter into a realistic model for disk-galaxy formation, focusing primarily on the Tully-Fisher (TF) relation and its scatter in several wavebands. Our main findings are: (a) the slope, normalization, and scatter of the TF relation across various wavebands is determined {\\em both} by halo properties and star formation in the disk; (b) TF scatter owes primarily to the spread in formation redshifts. The scatter can be measurably reduced by chemical evolution, and also in some cases by the weak anti-correlation between peak height and spin; (c) multi-wavelength constraints can be important in distinguishing between models which appear to fit the TF relation in I or K; (d) successful models seem to require that the bulk of disk formation cannot occur too early (z>2) or too late (z<0.5), and are inconsistent with high values of $\\Omega_0$; (e) a realistic model with the above ingredients can reasonably reproduce the observed z=0 TF relation in {\\em all} bands (B, R, I, and K). It can also account for the z=1 B-band TF relation and yield rough agreement with the local B and K luminosity functions and B-band surface-brightness--magnitude relation. The remarkable agreement with observations suggests that the amount of gas that is expelled or poured into a disk galaxy must be small, and that the specific angular momentum of the baryons must roughly equal that of the halo; there is little room for angular momentum transfer. In an appendix we present analytic fits to stellar-population synthesis models.

Ari Buchalter; Raul Jimenez; Marc Kamionkowski

2000-06-01T23:59:59.000Z

285

Dissipation, noise and DCC domain formation  

E-Print Network [OSTI]

We investigate the effect of friction on domain formation in disoriented chiral condensate. We solve the equation of motion of the linear sigma model, in the Hartree approximation, including a friction and a white noise term. For quenched initial condition, we find that even in presence of noise and dissipation domain like structure emerges after a few fermi of evolution. Domain size as large as 5 fm can be formed.

A. K. Chaudhuri

1999-08-17T23:59:59.000Z

286

Bubble formation in Rangely Field, Colorado  

E-Print Network [OSTI]

tc Determine the Effect of Times Of. Standing on Time &equired for Bubble Formation at 67 psi Supersaturaticns. Page 20 Tests to Determine Bubble Frequency. Average Bubble Frequency Data. 23 27 The data reported in this thesis deal... if present, or would tend to form one. However, as the pressure on the saturated oil declines, the oil becomes supersatur- ated, except as bubbles may form and diffusion take place tc eliminate the supersaturation. This research is devoted to a study...

Wood, J. W

1953-01-01T23:59:59.000Z

287

Carboxylic acid accelerated formation of diesters  

DOE Patents [OSTI]

This invention pertains to accelerating the rate of formation of 1,1-dicarboxylic esters from the reaction of an aldehyde with a carboxylic acid anhydride or a ketene in the presence of a non-iodide containing a strong Bronsted acid catalyst by the addition of a carboxylic acid at about one bar pressure and between about 0.degree. and 80.degree. C. in the substantial absence of a hydrogenation or carbonylation catalyst.

Tustin, Gerald Charles (Kingsport, TN); Dickson, Todd Jay (Kingsport, TN)

1998-01-01T23:59:59.000Z

288

Defect formation in long Josephson junctions  

SciTech Connect (OSTI)

We study numerically a mechanism of vortex formation in a long Josephson junction within the framework of the one-dimensional sine-Gordon model. This mechanism is switched on below the critical temperature. It is shown that the number of fluxons versus velocity of cooling roughly scales according to the power law with the exponent of either 0.25 or 0.5 depending on the temperature variation in the critical current density.

Gordeeva, Anna V. [Institute for Physics of Microstructures, RAS, GSP-105, Nizhny Novgorod 603950 (Russian Federation); Department of Physics, B309, Technical University of Denmark, DK-2800 Lyngby (Denmark); Pankratov, Andrey L. [Institute for Physics of Microstructures, RAS, GSP-105, Nizhny Novgorod 603950 (Russian Federation)

2010-06-01T23:59:59.000Z

289

Dynamical Constraints on Disk Galaxy Formation  

E-Print Network [OSTI]

The rotation curves of disk galaxies exhibit a number of striking regularities. The amplitude of the rotation is correlated with luminosity (Tully-Fisher), the shape of the rotation curve is well predicted by the luminous mass distribution, and the magnitude of the mass discrepancy increases systematically with decreasing centripetal acceleration. These properties indicate a tight connection between light and mass, and impose strong constraints on theories of galaxy formation.

Stacy McGaugh

1999-09-27T23:59:59.000Z

290

ANALYTICAL STAR FORMATION RATE FROM GRAVOTURBULENT FRAGMENTATION  

SciTech Connect (OSTI)

We present an analytical determination of the star formation rate (SFR) in molecular clouds, based on a time-dependent extension of our analytical theory of the stellar initial mass function. The theory yields SFRs in good agreement with observations, suggesting that turbulence is the dominant, initial process responsible for star formation. In contrast to previous SFR theories, the present one does not invoke an ad hoc density threshold for star formation; instead, the SFR continuously increases with gas density, naturally yielding two different characteristic regimes, thus two different slopes in the SFR versus gas density relationship, in agreement with observational determinations. Besides the complete SFR derivation, we also provide a simplified expression, which reproduces the complete calculations reasonably well and can easily be used for quick determinations of SFRs in cloud environments. A key property at the heart of both our complete and simplified theory is that the SFR involves a density-dependent dynamical time, characteristic of each collapsing (prestellar) overdense region in the cloud, instead of one single mean or critical freefall timescale. Unfortunately, the SFR also depends on some ill-determined parameters, such as the core-to-star mass conversion efficiency and the crossing timescale. Although we provide estimates for these parameters, their uncertainty hampers a precise quantitative determination of the SFR, within less than a factor of a few.

Hennebelle, Patrick [Laboratoire de Radioastronomie, UMR CNRS 8112, Ecole Normale Superieure et Observatoire de Paris, 24 rue Lhomond, 75231 Paris Cedex 05 (France); Chabrier, Gilles [Ecole Normale Superieure de Lyon, CRAL, UMR CNRS 5574, 69364 Lyon Cedex 07 (France)

2011-12-20T23:59:59.000Z

291

Black holes, cuspy atmospheres, and galaxy formation  

E-Print Network [OSTI]

In cuspy atmospheres, jets driven by supermassive black holes (BHs) offset radiative cooling. The jets fire episodically, but often enough that the cuspy atmosphere does not move very far towards a cooling catastrophe in the intervals of jet inactivity. The ability of energy released on the sub-parsec scale of the BH to balance cooling on scales of several tens of kiloparsecs arises through a combination of the temperature sensitivity of the accretion rate and the way in which the radius of jet disruption varies with ambient density. Accretion of hot gas does not significantly increase BH masses, which are determined by periods of rapid BH growth and star formation when cold gas is briefly abundant at the galactic centre. Hot gas does not accumulate in shallow potential wells. As the Universe ages, deeper wells form, and eventually hot gas accumulates. This gas soon prevents the formation of further stars, since jets powered by the BH prevent it from cooling, and it mops up most cold infalling gas before many stars can form. Thus BHs set the upper limit to the masses of galaxies. The formation of low-mass galaxies is inhibited by a combination of photo-heating and supernova-driven galactic winds. Working in tandem these mechanisms can probably explain the profound difference between the galaxy luminosity function and the mass function of dark halos expected in the cold dark matter cosmology.

James Binney

2004-07-12T23:59:59.000Z

292

The Evolutionary Status of Isolated Dwarf Irregular Galaxies II. Star Formation Histories and Gas Depletion  

E-Print Network [OSTI]

The results of UBV and H alpha imaging of a large sample of isolated dwarf irregular galaxies are interpreted in the context of composite stellar population models. The observed optical colors are best fit by composite stellar populations which have had approximately constant star formation rates for at least 10 Gyr. The galaxies span a range of central surface brightness, from 20.5 to 25.0 mag arcsec^{-2}; there is no correlation between surface brightness and star formation history. Although the current star formation rates are low, it is possible to reproduce the observed luminosities without a major starburst episode. The derived gas depletion timescales are long, typically ~20 Gyr. These results indicate that dwarf irregular galaxies will be able to continue with their slow, but constant, star formation activity for at least another Hubble time. The sample of isolated dIs is compared to a sample of star bursting dwarf galaxies taken from the literature. The star bursting dwarf galaxies have many similar properties; the main difference between these two types of gas-rich dwarf galaxies is that the current star formation is concentrated in the center of the star bursting systems while it is much more distributed in the quiescent dIs. This results in pronounced color gradients for the starbursting dwarf galaxies, while the majority of the quiescent dwarf irregular galaxies have minor or non-existent color gradients. Thus, the combination of low current star formation rates, blue colors, and the lack of significant color gradients indicates that star formation percolates slowly across the disk of normal dwarf galaxies in a quasi-continuous manner.

L. van Zee

2001-01-09T23:59:59.000Z

293

Production from multiple zones of a tar sands formation  

DOE Patents [OSTI]

A method for treating a tar sands formation includes providing heat to at least part of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. The heat is allowed to transfer from the heaters to at least a portion of the formation. Fluids are produced from the formation through at least one production well that is located in at least two zones in the formation. The first zone has an initial permeability of at least 1 darcy. The second zone has an initial of at most 0.1 darcy. The two zones are separated by a substantially impermeable barrier.

Karanikas, John Michael; Vinegar, Harold J

2013-02-26T23:59:59.000Z

294

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334

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

5 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

335

Search results | Department of Energy  

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

Page Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Page Analytical Tools The Bioenergy Technologies Office and its national lab partners provide a...

336

Search results | Department of Energy  

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

Parents Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

337

Search results | Department of Energy  

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

Undergraduate Students Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Article Energy Literacy in Action: Nevada Teachers Helping Students Learn...

338

Search results | Department of Energy  

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

Students Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7...

339

Search results | Department of Energy  

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

1 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

340

Search results | Department of Energy  

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

7 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

Note: This page contains sample records for the topic "multicolor result formats" 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

Search results | Department of Energy  

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

Graduate Students Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Article Energy Literacy in Action: Nevada Teachers Helping Students Learn About...

342

Search results | Department of Energy  

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

Consumers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7...

343

Search results | Department of Energy  

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

3 Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

344

Search results | Department of Energy  

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

6 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Literacy Videos New video series, Energy Literacy highlights the 7 Essential...

345

Search results | Department of Energy  

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

3 Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Page Analytical Tools The Bioenergy Technologies Office and its national lab partners provide a...

346

Search results | Department of Energy  

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

High School (9-12) Teachers Energy Efficiency Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download The BEAM Project: Building Efficient...

347

Search results | Department of Energy  

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

Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training Request projects...

348

Search results | Department of Energy  

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

Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Monitoring and Mentoring These activities explore energy use...

349

Search results | Department of Energy  

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

High School (9-12) Teachers Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Conservation Contract (4 activities) Students learn...

350

Search results | Department of Energy  

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

Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Conservation Contract (4 activities) Students learn...

351

Search results | Department of Energy  

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

Middle School (6-8) Teachers Download Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Energy Management Students will review energy...

352

Search results | Department of Energy  

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

High School (9-12) Teachers Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download The BEAM Project: Building Efficient Architectural Models This...

353

Search results | Department of Energy  

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

Science Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Transfer 1. Identify a closed system with consevative forces. 2....

354

Search results | Department of Energy  

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

Science Education Energy Efficiency Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Alternative Fuels Used in Transportation (5...

355

Search results | Department of Energy  

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

Science Education Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the...

356

Search results | Department of Energy  

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

Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Transfer 1. Identify a closed system with consevative forces. 2. Identify...

357

Search results | Department of Energy  

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

Science Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy in Today's Global Society Energy is an abstract concept that is...

358

Search results | Department of Energy  

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

Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Green Fuel This activity allows students the opportunity to explore different...

359

Search results | Department of Energy  

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

Education Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy in Today's Global Society Energy is an abstract concept that is very...

360

Search results | Department of Energy  

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

Education Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy in Today's Global Society Energy is an abstract concept that is very...

Note: This page contains sample records for the topic "multicolor result formats" 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

Search results | Department of Energy  

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

Research Opportunities Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download What Makes A Home 'Energy Efficient'? As energy demands increase and...

362

Search results | Department of Energy  

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

Fuel Economy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the most...

363

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Management Students will review energy basics and what they have learned...

364

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 10 of 15 results. Download Reducing Energy Loss Students will learn about the Law of Conservation of...

365

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Making Energy Personal Students will work with an interactive website in oder...

366

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 6 of 6 results. Download Learning and Conserving (10 activities) These activities explore energy use and...

367

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Monitoring and Mentoring These activities explore energy use and conservation...

368

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Making Energy Personal Students will work with an interactive website in oder...

369

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Energy Management Students will review energy basics and what they have learned...

370

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Learning and Conserving (10 activities) These activities explore energy use and...

371

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Energy Management Students will review energy basics and what they have...

372

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Making Energy Personal Students will work with an interactive website in oder...

373

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about...

374

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Management Students will review energy basics and what they have learned...

375

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy Management Students will review energy basics and what they have learned...

376

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Making Energy Personal Students will work with an interactive website in oder...

377

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Transmission Students will learn about everyday energy usage by...

378

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Management Students will review energy basics and what they have learned...

379

Search results | Department of Energy  

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

Consumption Search results Search results Enter terms Search Showing 1 - 10 of 16 results. Download Reducing Energy Loss Students will learn about the Law of Conservation of...

380

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 11 - 20 of 23 results. Download Alternative Energy Sources- An Interdisciplinary Module for Energy Education Find...

Note: This page contains sample records for the topic "multicolor result formats" 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

Search results | Department of Energy  

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

Education & Training Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Transfer 1. Identify a closed system with consevative forces. 2....

382

Search results | Department of Energy  

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

Education & Training Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Getting Energized Students will be able to describe the forms and...

383

Search results | Department of Energy  

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

Education & Training Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Transfer 1. Identify a closed system with consevative forces....

384

Search results | Department of Energy  

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

Geothermal Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

385

Search results | Department of Energy  

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

Geothermal Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Power to the Plug: An Introduction to Energy, Electricity, Consumption, and...

386

Search results | Department of Energy  

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

Geothermal Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

387

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 11 - 20 of 12 results. Download Photosynthesis and Biomass Growth (7 Activities) Introduce your students to the power of plants...

388

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 11 - 20 of 13 results. Download Photosynthesis and Biomass Growth (7 Activities) Introduce your students to the power of plants...

389

Search results | Department of Energy  

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

Geothermal Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

390

Search results | Department of Energy  

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

Science & Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy in Today's Global Society Energy is an abstract concept that is...

391

Search results | Department of Energy  

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

Climate Change Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training Request projects here. Upon...

392

Search results | Department of Energy  

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

Climate Change Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about...

393

Search results | Department of Energy  

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

Climate Change Energy Literacy Principle 6 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify...

394

Search results | Department of Energy  

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

Climate Change Energy Literacy Principle 6 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Using Plants to Save Energy Students will...

395

Search results | Department of Energy  

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

Climate Change Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Protect Your Climate Curriculum and Training Request projects here. Upon...

396

Search results | Department of Energy  

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

Climate Change Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training...

397

Search results | Department of Energy  

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

Climate Change Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training...

398

Search results | Department of Energy  

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

5 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

399

Search results | Department of Energy  

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

Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

400

Search results | Department of Energy  

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

4 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

Note: This page contains sample records for the topic "multicolor result formats" 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

Search results | Department of Energy  

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

2 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

402

Search results | Department of Energy  

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

7 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

403

Search results | Department of Energy  

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

Search results Search results Enter terms Search Showing 11 - 20 of 11 results. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

404

Search results | Department of Energy  

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

6 Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Awareness Quiz Students will identify their level of knowledge about energy issues...

405

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Wind Turbine Blade Design Blade engineering and design is one of the most complicated and...

406

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy, Electricity, Consumption, and Efficiency...

407

Search results | Department of Energy  

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

Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy, Electricity, Consumption, and Efficiency The...

408

Search results | Department of Energy  

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

Solar Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

409

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page Advantages and Challenges of Wind Energy Wind energy offers many...

410

Search results | Department of Energy  

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

Elementary (K-5) Teachers Download Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Monitoring and Mentoring These activities explore...

411

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Monitoring and Mentoring These activities explore energy use and...

412

Search results | Department of Energy  

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

K-8 Grade Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

413

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Page How Distributed Wind Works Wind generator http:energy.goveerewind...

414

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Management Students will review energy basics and what...

415

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Management Students will review energy basics and what they...

416

Search results | Department of Energy  

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

Water Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

417

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Fun with the Sun- Teacher's Activity Guide for Elementary Grades...

418

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Management Students will review energy basics and what...

419

Search results | Department of Energy  

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

Building Design Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Monitoring and Mentoring These activities...

420

Search results | Department of Energy  

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

Bioenergy Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

Note: This page contains sample records for the topic "multicolor result formats" 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

Search results | Department of Energy  

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

Elementary (K-5) Teachers Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum...

422

Search results | Department of Energy  

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

Geothermal Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

423

Search results | Department of Energy  

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

Renewables Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

424

Search results | Department of Energy  

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

Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Protect Your Climate Curriculum and Training Request projects...

425

Search results | Department of Energy  

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

Energy Sources Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy,...

426

Search results | Department of Energy  

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

Wind Elementary (K-5) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Power to the Plug: An Introduction to Energy, Electricity,...

427

Search results | Department of Energy  

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

Hydrogen Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Electrolysis of Water Students observe the electrolysis of water using either...

428

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Conservation Contract (4 activities) Students learn about saving energy and encourage their...

429

Search results | Department of Energy  

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

Bioenergy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher guide...

430

Search results | Department of Energy  

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

Bioenergy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Video Energy 101: Feedstocks for Biofuels and More See how organic materials like corn...

431

Search results | Department of Energy  

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

Wind Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

432

Search results | Department of Energy  

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

Search results Search results Enter terms Search Showing 1 - 10 of 22 results. Video Energy 101: Wind Turbines- 2014 Update The video highlights the basic principles at work...

433

Search results | Department of Energy  

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

Wind Search results Search results Enter terms Search Showing 11 - 20 of 22 results. Download Research Projects in Renewable Energy for High School Students This document...

434

Search results | Department of Energy  

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

Wind Search results Search results Enter terms Search Showing 1 - 10 of 12 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

435

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 1 - 6 of 6 results. Download Exploring Wind Energy (12 activities) Hands-on activities that provide a comprehensive understanding...

436

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Exploring Wind Energy (12 activities) Hands-on activities that provide a comprehensive understanding...

437

Search results | Department of Energy  

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

Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy from The Wind (9 activities) Hands-on activities that provide a comprehensive...

438

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Exploring Wind Energy (12 activities) Hands-on activities that provide a comprehensive understanding...

439

Search results | Department of Energy  

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

Wind Energy Literacy Principle 6 Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download An Exploration of Wind Energy & Wind Turbines This...

440

Search results | Department of Energy  

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

Biofuels Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Video Energy 101: Feedstocks for Biofuels and More See how organic materials like corn...

Note: This page contains sample records for the topic "multicolor result formats" 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

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher guide...

442

Search results | Department of Energy  

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

Economy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher guide provides...

443

Search results | Department of Energy  

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

Fuel Economy Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is...

444

Search results | Department of Energy  

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

Fuel Economy Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This...

445

Search results | Department of Energy  

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

Fuel Economy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher guide...

446

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Management Students will review energy basics and what they have...

447

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy Management Students will review energy basics and what they have...

448

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Transfer 1. Identify a closed system with consevative forces. 2....

449

Search results | Department of Energy  

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

Energy Economy Download Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy Management Students will review energy basics and what...

450

Search results | Department of Energy  

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

Energy Economy Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This...

451

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Management Students will review energy basics and what they have...

452

Search results | Department of Energy  

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

Economy Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy Management Students will review energy basics and what they have learned in...

453

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Transfer 1. Identify a closed system with consevative forces. 2....

454

Search results | Department of Energy  

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

Energy Economy Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy Management Students will review energy basics and what they have...

455

Search results | Department of Energy  

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

Fuel Economy Energy Efficiency Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Alternative Fuels Used in Transportation (5 Activities)...

456

Search results | Department of Energy  

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

Biofuels Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher guide...

457

Search results | Department of Energy  

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

Biofuels Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Video Energy 101: Feedstocks for Biofuels and More See how organic materials like corn...

458

Search results | Department of Energy  

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

Biofuels Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the most...

459

Search results | Department of Energy  

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

Biofuels Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Alternative Fuels Used in Transportation (5 Activities) Gasoline is the...

460

Search results | Department of Energy  

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

Biofuels Vehicles Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Video Energy 101: Feedstocks for Biofuels and More See how organic materials...

Note: This page contains sample records for the topic "multicolor result formats" from the National Library of EnergyBeta (NLEBeta).
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461

Search results | Department of Energy  

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

Biofuels Download Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Transportation Fuels: The Future is Today (6 Activities) This teacher...

462

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Power to the Plug: An Introduction to Energy, Electricity, Consumption, and...

463

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

464

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

465

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

466

Search results | Department of Energy  

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

Solar Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download Energy Production Students will compare and contrast renewable and nonrenewable...

467

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 31 - 40 of 53 results. Download Wind Turbine Blade Design Blade engineering and design is one of the most complicated and...

468

Search results | Department of Energy  

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

results Search results Enter terms Search Showing 21 - 30 of 33 results. Download Wind Turbine Blade Design Blade engineering and design is one of the most complicated and...

469

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy in Today's Global Society Energy is an abstract concept that is very...

470

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download An Exploration of Wind Energy & Wind Turbines This unit, which includes both a...

471

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 2 of 2 results. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based...

472

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Cell Wall Chemistry of Biofuel This module focuses on the production of sugar...

473

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 3 of 3 results. Download An Exploration of Wind Energy & Wind Turbines This unit, which includes both a...

474

Search results | Department of Energy  

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

Technology High School (9-12) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Exploring Photovoltaics (9 investigations)...

475

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy from The Wind (9 activities) Hands-on activities that provide a...

476

Search results | Department of Energy  

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

Technology Middle School (6-8) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Hybrid Vehicles: Cut Pollution & Save Money...

477

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 8 of 8 results. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based...

478

Search results | Department of Energy  

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

Technology Download Search results Search results Enter terms Search Showing 1 - 5 of 5 results. Download Energy Expos Students work in groups to create hands-on exhibits...

479

Search results | Department of Energy  

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

& Technology Science Education Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Energy in Today's Global Society Energy is an abstract...

480

Search results | Department of Energy  

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

Technology High School (9-12) Teachers Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Exploring Hydroelectricity (9 activities)...

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


481

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based activities...

482

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 4 of 4 results. Download Energy from The Wind (9 activities) Hands-on activities that provide a...

483

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download Wind Turbine Blade Design Blade engineering and design is one of the most...

484

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 1 of 1 result. Download An Exploration of Wind Energy & Wind Turbines This unit, which includes both a...

485

Search results | Department of Energy  

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

Technology Search results Search results Enter terms Search Showing 1 - 7 of 7 results. Download Exploring Hydroelectricity (9 activities) Integrated and inquiry-based...

486

Search results | Department of Energy  

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

Energy Sources Search results Search results Enter terms Search Showing 51 - 60 of 71 results. Download Ocean Power (4 Activities) Areas of the country that have an available...

487

Increasing gas hydrate formation temperature for desalination of high salinity produced water with secondary guests  

SciTech Connect (OSTI)

We suggest a new gas hydrate-based desalination process using water-immiscible hydrate formers; cyclopentane (CP) and cyclohexane (CH) as secondary hydrate guests to alleviate temperature requirements for hydrate formation. The hydrate formation reactions were carried out in an isobaric condition of 3.1 MPa to find the upper temperature limit of CO2 hydrate formation. Simulated produced water (8.95 wt % salinity) mixed with the hydrate formers shows an increased upper temperature limit from ?2 °C for simple CO2 hydrate to 16 and 7 °C for double (CO2 + CP) and (CO2 + CH) hydrates, respectively. The resulting conversion rate to double hydrate turned out to be similar to that with simple CO2 hydrate at the upper temperature limit. Hydrate formation rates (Rf) for the double hydrates with CP and CH are shown to be 22 and 16 times higher, respectively, than that of the simple CO2 hydrate at the upper temperature limit. Such mild hydrate formation temperature and fast formation kinetics indicate increased energy efficiency of the double hydrate system for the desalination process. Dissociated water from the hydrates shows greater than 90% salt removal efficiency for the hydrates with the secondary guests, which is also improved from about 70% salt removal efficiency for the simple hydrates.

Cha, Jong-Ho [ORISE; Seol, Yongkoo [U.S. DOE

2013-01-01T23:59:59.000Z

488

Search Results | Department of Energy  

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

Search Results Search Results Search Results Enter terms Search Showing 1 - 10 of 71,179 results. Homepage Office of Energy Policy and Systems Analysis http:energy.govepsa...

489

The role of jets in the formation of planets, stars, and galaxies  

E-Print Network [OSTI]

Astrophysical jets are associated with the formation of young stars of all masses, stellar and massive black holes, and perhaps even with the formation of massive planets. Their role in the formation of planets, stars, and galaxies is increasingly appreciated and probably reflects a deep connection between the accretion flows - by which stars and black holes may be formed - and the efficiency by which magnetic torques can remove angular momentum from such flows. We compare the properties and physics of jets in both non-relativistic and relativistic systems and trace, by means of theoretical argument and numerical simulations, the physical connections between these different phenomena. We discuss the properties of jets from young stars and black holes, give some basic theoretical results that underpin the origin of jets in these systems, and then show results of recent simulations on jet production in collapsing star-forming cores as well as from jets around rotating Kerr black holes.

Ralph E. Pudritz; Robi Banerjee; Rachid Ouyed

2008-08-21T23:59:59.000Z

490

Molecular Hydrogen Formation from Proximal Glycol Pairs on TiO2(110)  

SciTech Connect (OSTI)

Understanding hydrogen formation on TiO2 surfaces is of great importance as it could provide fundamental insight into water splitting for hydrogen production using solar energy. In this work, hydrogen formation from glycols having different numbers of methyl end-groups have been studied using temperature pro-grammed desorption on reduced, hydroxylated, and oxidized TiO2(110) surfaces. The results from OD-labeled glycols demon-strate that gas-phase molecular hydrogen originates exclusively from glycol hydroxyl groups. The yield is controlled by a combi-nation of glycol coverage, steric hindrance, TiO2(110) order and the amount of subsurface charge. Combined, these results show that proximal pairs of hydroxyl aligned glycol molecules and subsurface charge are required to maximize the yield of this redox reaction. These findings highlight the importance of geometric and electronic effects in hydrogen formation from adsorbates on TiO2(110).

Chen, Long; Li, Zhenjun; Smith, R. Scott; Kay, Bruce D.; Dohnalek, Zdenek

2014-04-16T23:59:59.000Z

491

TWO-STAGE FRAGMENTATION FOR CLUSTER FORMATION: ANALYTICAL MODEL AND OBSERVATIONAL CONSIDERATIONS  

SciTech Connect (OSTI)

Linear analysis of the formation of protostellar cores in planar magnetic interstellar clouds shows that molecular clouds exhibit a preferred length scale for collapse that depends on the mass-to-flux ratio and neutral-ion collision time within the cloud. We extend this linear analysis to the context of clustered star formation. By combining the results of the linear analysis with a realistic ionization profile for the cloud, we find that a molecular cloud may evolve through two fragmentation events in the evolution toward the formation of stars. Our model suggests that the initial fragmentation into clumps occurs for a transcritical cloud on parsec scales while the second fragmentation can occur for transcritical and supercritical cores on subparsec scales. Comparison of our results with several star-forming regions (Perseus, Taurus, Pipe Nebula) shows support for a two-stage fragmentation model.

Bailey, Nicole D.; Basu, Shantanu, E-mail: nwityk@uwo.ca, E-mail: basu@uwo.ca [Department of Physics and Astronomy, University of Western Ontario, 1151 Richmond Street, London, ON N6A 3K7 (Canada)

2012-12-10T23:59:59.000Z

492

Deep Vadose Zone Treatability Test for the Hanford Central Plateau: Soil Desiccation Pilot Test Results  

SciTech Connect (OSTI)

This report describes results of a pilot test of soil desiccation conducted as part of the Deep Vadose Zone Treatability Test program. The report is written in CERCLA treatabilty test report format.

Truex, Michael J.; Oostrom, Martinus; Strickland, Christopher E.; Johnson, Timothy C.; Freedman, Vicky L.; Johnson, Christian D.; Greenwood, William J.; Ward, Anderson L.; Clayton, Ray E.; Lindberg, Michael J.; Peterson, John E.; Hubbard, Susan; Chronister, Glen B.; Benecke, Mark W.

2012-05-01T23:59:59.000Z

493

E-Print Network 3.0 - activite le procede Sample Search Results  

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

le procede Search Powered by Explorit Topic List Advanced Search Sample search results for: activite le procede Page: << < 1 2 3 4 5 > >> 1 Departement de formation doctorale en...

494

E-Print Network 3.0 - air pollution lessons Sample Search Results  

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

lessons Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution lessons Page: << < 1 2 3 4 5 > >> 1 Global Ozone Project Ozone Formation in...

495

Practical Issues in Formation Control of Multi-Robot Systems  

E-Print Network [OSTI]

Considered in this research is a framework for effective formation control of multirobot systems in dynamic environments. The basic formation control involves two important considerations: (1) Real-time trajectory generation algorithms...

Zhang, Junjie

2010-07-14T23:59:59.000Z

496

Development of Large Format Lithium Ion Cells with Higher Energy...  

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

Large Format Lithium Ion Cells with Higher Energy Density Exceeding 500WhL Development of Large Format Lithium Ion Cells with Higher Energy Density Exceeding 500WhL 2012 DOE...

497

Looking at Transistor Gate Oxide Formation in Real Time  

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

Gate Oxide Formation in Real Time Looking at Transistor Gate Oxide Formation in Real Time Print Wednesday, 25 June 2008 00:00 The oxide gate layer is critical to every transistor,...

498

allograft neointima formation: Topics by E-print Network  

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

Bykowski; Johnny Huard, Ph.D.; Lee E. Weiss, Ph.D.; Joseph E. Losee; Phil G. Campbell, Ph.D. 26 Ateliers de formation > FORMATION EN PHOTOGRAPHIE Chemistry Websites Summary: ....

499

Defect- and Strain-enhanced Cavity Formation and Au Precipitation...  

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

Defect- and Strain-enhanced Cavity Formation and Au Precipitation at nano-crystalline ZrO2SiO2Si Interfaces . Defect- and Strain-enhanced Cavity Formation and Au Precipitation at...

500

Best Practices for Portable Document Format (PDF) Creation |...  

Office of Scientific and Technical Information (OSTI)

for OSTI: 1) Searchable image PDFs, 2) Formatted text and graphics PDFs, and 3) Hybrid PDFs (a mix of searchable image and formatted text and graphics pages). PDFs from...