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1

mace-98.pdf  

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

of Millimeter Wave Cloud Radar Data G. G. Mace Department of Meteorology University of Utah Salt Lake City, Utah E. E. Clothiaux Department of Meteorology The Pennsylvania State...

2

KP solitons in shallow water  

E-Print Network (OSTI)

The main purpose of the paper is to provide a survey of our recent studies on soliton solutions of the Kadomtsev-Petviashvili (KP) equation. The classification is based on the far-field patterns of the solutions which consist of a finite number of line-solitons. Each soliton solution is then defined by a point of the totally non-negative Grassmann variety which can be parametrized by a unique derangement of the symmetric group of permutations. Our study also includes certain numerical stability problems of those soliton solutions. Numerical simulations of the initial value problems indicate that certain class of initial waves asymptotically approach to these exact solutions of the KP equation. We then discuss an application of our theory to the Mach reflection problem in shallow water. This problem describes the resonant interaction of solitary waves appearing in the reflection of an obliquely incident wave onto a vertical wall, and it predicts an extra-ordinary four-fold amplification of the wave at the wall. There are several numerical studies confirming the prediction, but all indicate disagreements with the KP theory. Contrary to those previous numerical studies, we find that the KP theory actually provides an excellent model to describe the Mach reflection phenomena when the higher order corrections are included to the quasi-two dimensional approximation. We also present laboratory experiments of the Mach reflection recently carried out by Yeh and his colleagues, and show how precisely the KP theory predicts this wave behavior.

Yuji Kodama

2010-04-26T23:59:59.000Z

3

KP Renewables Plc | Open Energy Information  

Open Energy Info (EERE)

Plc Plc Jump to: navigation, search Name KP Renewables Plc Place Brentford, Middlesex, Greater London, United Kingdom Zip TW8 9JJ Sector Renewable Energy, Wind energy Product KP is a renewable energy project developer. KP raises funding for small renewable generating projects, especially using wind and waste as fuel and then acts as PPA arranger and power producer. References KP Renewables Plc[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. KP Renewables Plc is a company located in Brentford, Middlesex, Greater London, United Kingdom . References ↑ "KP Renewables Plc" Retrieved from "http://en.openei.org/w/index.php?title=KP_Renewables_Plc&oldid=348173

4

JV between KP Renewables and Living Buildings | Open Energy Information  

Open Energy Info (EERE)

and Living Buildings and Living Buildings Jump to: navigation, search Name JV between KP Renewables and Living Buildings Place Brentford, Middlesex, Greater London, United Kingdom Zip TW8 9JJ Sector Biomass Product JV established to develop up to 15.0MW per year of small biomass based power projects on industrial sites in the UK. References JV between KP Renewables and Living Buildings[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. JV between KP Renewables and Living Buildings is a company located in Brentford, Middlesex, Greater London, United Kingdom . References ↑ "JV between KP Renewables and Living Buildings" Retrieved from "http://en.openei.org/w/index.php?title=JV_between_KP_Renewables_and_Living_Buildings&oldid=34782

5

Kaonic hydrogen versus the $K^{-}p$ low energy data  

E-Print Network (OSTI)

We present an exact solution to the $K^{-}$-proton bound state problem formulated in the momentum space. The 1s level characteristics of the kaonic hydrogen are computed simultaneously with the available low energy $K^{-}p$ data. In the strong interaction sector the meson-baryon interactions are described by means of an effective (chirally motivated) separable potential and its parameters are fitted to the experimental data.

A. Cieply; J. Smejkal

2007-11-30T23:59:59.000Z

6

GG&A Hoofed Stock Price Year low high Comments 1971 97 ...  

Science Conference Proceedings (OSTI)

Page 1. GG&A Hoofed Stock Price Year low high Comments 1971 97245 Bad year. 72 245245 Light trading due to a heavy winter. ...

2013-02-19T23:59:59.000Z

7

Global well-posedness of the KP-I initial-value problem in the energy space  

E-Print Network (OSTI)

We prove that the KP-I initial value problem is globally well-posed in the natural energy space of the equation.

Ionescu, A D; Tataru, D

2007-01-01T23:59:59.000Z

8

Time variations of geomagnetic activity indices Kp and Ap: G. K. Rangarajan1  

E-Print Network (OSTI)

Time variations of geomagnetic activity indices Kp and Ap: an update G. K. Rangarajan1 , T. Iyemori2 1 Indian Institute of Geomagnetism, Colaba, Mumbai 400 005, India 2 Data Analysis Center for Geomagnetism and Space Magnetism, Faculty of Science, Kyoto University, Kyoto 606 Japan Received: 9 September

Paris-Sud XI, Université de

9

Equivariant Kaehler Geometry and Localization in the G/G Model  

E-Print Network (OSTI)

We analyze in detail the equivariant supersymmetry of the $G/G$ model. In spite of the fact that this supersymmetry does not model the infinitesimal action of the group of gauge transformations, localization can be established by standard arguments. The theory localizes onto reducible connections and a careful evaluation of the fixed point contributions leads to an alternative derivation of the Verlinde formula for the $G_{k}$ WZW model. We show that the supersymmetry of the $G/G$ model can be regarded as an infinite dimensional realization of Bismut's theory of equivariant Bott-Chern currents on K\\"ahler manifolds, thus providing a convenient cohomological setting for understanding the Verlinde formula. We also show that the supersymmetry is related to a non-linear generalization (q-deformation) of the ordinary moment map of symplectic geometry in which a representation of the Lie algebra of a group $G$ is replaced by a representation of its group algebra with commutator $[g,h] = gh-hg$. In the large $k$ limit it reduces to the ordinary moment map of two-dimensional gauge theories.

Matthias Blau; George Thompson

1994-07-07T23:59:59.000Z

10

First Measurement of sigma(gg -> ttbar)/sigma(ppbar -> ttbar)  

SciTech Connect

The work presented here is the first measurement of the fraction of top quark pair production through gluon-gluon fusion. We use an integrated luminosity of 0.96 {+-} 0.06 fb{sup -1} of p{bar p} collisions at {radical}s of 1.96 TeV collected by the CDF II detector. We select t{bar t} candidates by identifying a high-p{sub T} lepton candidate, a large missing E{sub T} as evidence for a neutrino candidate and at least four high E{sub T} jets, one of which has to be identified as originating from a b quark. The challenge is to discriminate between the two production processes with the identical final state, gg {yields} t{bar t} and q{bar q} {yields} t{bar t}. We take advantage of the fact that compared to a quark, a gluon is more likely to radiate a low momentum gluon and therefore, one expects a larger number of charged particles with low p{sub T} in a process involving more gluons. Given the large uncertainties associated with the modeling of the low p{sub T} charged particle multiplicity, a data-driven technique was employed. Using calibration data samples, we show there exists a clear correlation between the observed average number of low p{sub T} charged particles and the average number of gluons involved in the production process predicted by Monte Carlo calculations. Given the correlation, one can identify low p{sub T} charged particle multiplicity distributions associated with specific average number of gluons. The W + 0 jet sample and dijets sample with leading jet E{sub T} in the range of 80-100 GeV are used to find no-gluon and gluon-rich low p{sub T} charged particle multiplicity distributions, respectively. Using these no-gluon and gluon-rich distributions in a likelihood fit, we find the fraction of gluon-rich events in t{bar t} candidates. This fraction has contributions from the signal and background events. Taking into account these contributions and the gg {yields} t{bar t} and q{bar q} {yields} t{bar t} production channel acceptances, we find {sigma}(gg {yields} t{bar t})/{sigma}(p{bar p} {yields} t{bar t}) = 0.07 {+-} 0.14(stat) {+-} 0.07(syst) in agreement with the theoretical predictions of 0.15 {+-} 0.05. This measurement is a stepping stone towards a better understanding of the production mechanism of top quark pairs and implies that at least 67% of the t{bar t} events are consistent with q{bar q} production at 95% C.L, leaving little room for non SM processes which are not similar to the q{bar q} {yields} t{bar t} in their gluon radiation. The result confirms our current understanding of the SM high p{sub T} production mechanism and the relative gluon PDFs at relatively high Q{sup 2} and x.

Pashapour Alamdari, Shabnaz; /Toronto U.

2008-06-01T23:59:59.000Z

11

Search for Theta+ via K+p -> pi+X reaction with a 1.2 GeV/c K+ beam  

E-Print Network (OSTI)

The Theta+ was searched for via the K+p -> pi+X reaction using the 1.2 GeV/c K+ beam at the K6 beam line of the KEK-PS 12 GeV Proton Synchrotron. In the missing mass spectrum of the K+p -> pi+X reaction, no clear peak structure was observed. Therefore a 90 % C.L. upper limit of 3.5 ub/sr was derived for the differential cross section averaged over 2degree to 22degree in the laboratory frame of the K+p -> pi+Theta+ reaction. This upper limit is much smaller than the theoretical calculation for the t-channel process where a K0* is exchanged. From the present result, either the t-channel process is excluded or the coupling constant of g_{K*N\\Theta} is quite small.

K. Miwa; S. Dairaku; D. Nakajima; for the KEK-PS E559 Collaboration

2007-12-22T23:59:59.000Z

12

ARM - Publications: Science Team Meeting Documents  

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

Measurements at the DOE ARM NSA Site Dong, X. and Mace, G.G., University of Utah Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The Arctic plays...

13

ARM - Publications: Science Team Meeting Documents  

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

Factors Vernon, E.N. and Mace, G.G., Department of Meteorology, Unviversity of Utah Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The extensive...

14

ARM - Publications: Science Team Meeting Documents  

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

Millimeter Radar and Microwave Radiometer Data Dong, X. and Mace, G.G., University of Utah Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting A new algorithm...

15

ARM - Publications: Science Team Meeting Documents  

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

Cloud Mask Products (MOD35) with MMCR Data Zhang, Q. and Mace, G.G., University of Utah Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The...

16

ARM - Publications: Science Team Meeting Documents  

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

of Cases Sampled During the 2000 Cloud IOP Sonntag, K. and Mace, G.G., University of Utah Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Quantities...

17

ARM - Publications: Science Team Meeting Documents  

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

of Cirrus Cloud Property Retrieval Algorithms Mace, G.G. and Zhang, Y., University of Utah Fourteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The problem of...

18

Scalar evolution equations for shear waves in incompressible solids: A simple derivation of the Z, ZK, KZK, and KP equations  

E-Print Network (OSTI)

We study the propagation of two-dimensional finite-amplitude shear waves in a nonlinear pre-strained incompressible solid, and derive several asymptotic amplitude equations in a simple, consistent, and rigorous manner. The scalar Zabolotskaya (Z) equation is shown to be the asymptotic limit of the equations of motion for all elastic generalized neo-Hookean solids (with strain energy depending only on the first principal invariant of Cauchy-Green strain). However, we show that the Z equation cannot be a scalar equation for the propagation of two-dimensional shear waves in general elastic materials (with strain energy depending on the first and second principal invariants of strain). Then we introduce dispersive and dissipative terms to deduce the scalar Kadomtsev-Petviashvili (KP), Zabolotskaya-Khokhlov (ZK) and Khokhlov-Zabolotskaya-Kuznetsov (KZK) equations of incompressible solid mechanics.

Michel Destrade; Alain Goriely; Giuseppe Saccomandi

2013-02-01T23:59:59.000Z

19

Combined Tevatron upper limit on gg --> H --> W[superscript +]W[superscript -] and constraints on the Higgs boson mass in fourth-generation fermion models  

E-Print Network (OSTI)

We combine results from searches by the CDF and D0 collaborations for a standard model Higgs boson (H) in the process gg-->H-->W+W- in pp? collisions at the Fermilab Tevatron Collider at [sqrt]s=1.96??TeV. With 4.8??fb-1 ...

Paus, Christoph M. E.

20

REFRIGERATIONREFRIGERATION ((svsv: Kylteknik): Kylteknik) 424503 E424503 E 20102010 #7#7 --rzrz 7. Air conditioning, cooling towers7. Air conditioning, cooling towersg, gg, g  

E-Print Network (OSTI)

the top of the tower An (earlier) alternative is to use a spray pond to cool water; disadvantages. Air conditioning, cooling towers7. Air conditioning, cooling towersg, gg, g Ron Zevenhoven ??bo, is the hi htemperature at which condensation begins when air is cooled at constant pressurecooled

Zevenhoven, Ron

Note: This page contains sample records for the topic "gg mace kp" 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

REFRIGERATIONREFRIGERATION ((svsv: Kylteknik): Kylteknik) 424503 E 2010 #6424503 E 2010 #6 --rzrz 6. Food cooling and freezing6. Food cooling and freezingg f gg f g  

E-Print Network (OSTI)

and quality of life, population growth, consumption Cooling and freezing of food gives important alternatives 6. Food cooling and freezing6. Food cooling and freezingg f gg f g Ron Zevenhoven ??bo Akademi, , nutricity, change taste, etc. Special considerations in food freezing and cooling are, for l h f i d bl i

Zevenhoven, Ron

22

Session GG: III-Nitrides  

Science Conference Proceedings (OSTI)

Jun 24, 2011 ... Long-wavelength light emitting diode (LED) structures were grown on top of partially relaxed InGaN layers, resulting in reduced strain in the...

23

ARM - Publications: Science Team Meeting Documents  

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

Mining the ARM Data Set: A WWW-Staged Prototype Relational Database of ARM Data Mace, G.G. and Hudach, D.P., University of Utah Twelfth Atmospheric Radiation Measurement (ARM)...

24

ARM - Publications: Science Team Meeting Documents  

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

and Large-Scale Meteorology Benson, S., Mace, G.G., and Vernon, E.N., University of Utah Cirrus cloud properties are influenced by the large-scale meteorology in which they...

25

ARM - Publications: Science Team Meeting Documents  

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

Optical Display Sassen, K., and Mace, G.G., Department of Meteorology, University of Utah; Arnott, W.P., and Hallett, J., Desert Research Institute; Liou, K.N., and Takano, Y.,...

26

ARM - Publications: Science Team Meeting Documents  

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

A WWW-Staged Prototype ARM Database Utility Mace, G.G. and Hudach, D., University of Utah Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting Counting from when...

27

ARM - Publications: Science Team Meeting Documents  

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

Remote Sensing of Three-Dimensional Inhomogeneous Cirrus Clouds: Application to Climate Research Liou, K.N. (a), Ou, S.C. (a), Rolland, P. (a), Gu, Y. (a), Mace, G.G. (b), and...

28

Combined CDF and D0 upper limits on $gg\\to H\\to W^+W^-$ and constraints on the Higgs boson mass in fourth-generation fermion models with up to 8.2 fb$^{-1}$ of data  

Science Conference Proceedings (OSTI)

We combine results from searches by the CDF and D0 Collaborations for a standard model Higgs boson (H) in the processes gg {yields} H {yields} W{sup +}W{sup -} and gg {yields} H {yields} ZZ in p{bar p} collisions at the Fermilab Tevatron Collider at {radical}s = 1.96 TeV. With 8.2 fb{sup -1} of integrated luminosity analyzed at CDF and 8.1 fb{sup -1} at D0, the 95% C.L. upper limit on {sigma}(gg {yields} H) x {Beta}(H {yields} W{sup +}W{sup -}) is 1.01 pb at m{sub H} = 120 GeV, 0.40 pb at m{sub H} = 165 GeV, and 0.47 pb at m{sub H} = 200 GeV. Assuming the presence of a fourth sequential generation of fermions with large masses, we exclude at the 95% Confidence Level a standard-model-like Higgs boson with a mass between 124 and 286 GeV.

Benjamin, Doug; /Tufts U.

2011-08-01T23:59:59.000Z

29

GG6, Thermomagnetic Transport Properties of (Ag  

Science Conference Proceedings (OSTI)

L6, PECVD-SiN, Si or Si/Al2O3-Capped ED-Mode AlN/GaN Inverters Hide details for [

30

FE HH GG DC CF BA AB ED  

Science Conference Proceedings (OSTI)

S S S S S S Michael R. Mark Michael R. Terrance M. Alan G. Julia Kenneth D. Bloomberg Green Bloomberg Gray Hevesi Willebrand Schaeffer ...

2010-03-23T23:59:59.000Z

31

GG4, Investigations of Charge Transport and Bias Stress in ...  

Science Conference Proceedings (OSTI)

Film microstructure was characterized at the Stanford Synchrotron Radiation Laboratory (SSRL). X-ray diffraction experiments confirm the unique in-plane and ...

32

BACKWARD K~;;p ELASTIC SCATTERING AND 0 PRODUCTION  

E-Print Network (OSTI)

Laboratory Mt. Holyoke Brookhaven National LaboratoryLaboratory Mt. Holyoke Brookhaven National Laboratoryhas been performed at the Brookhaven National Laboratory

Alston-Garnjost, M.

2011-01-01T23:59:59.000Z

33

The weight of an assassin's mace : vulnerabilities in the US military's satellite communications and China's information warfare threat  

E-Print Network (OSTI)

Believing that an information Revolution of Military Affairs has occurred, the US military is currently transforming to achieve dominance over the full spectrum of deployment scenarios with a lighter, more mobile, and more ...

Brooks, Benjamin M

2005-01-01T23:59:59.000Z

34

Nitrous oxide (N?O) isotopic composition in the troposphere : instrumentation, observations at Mace Head, Ireland, and regional modeling  

E-Print Network (OSTI)

Nitrous oxide (N?O) is a significant greenhouse gas and main contributor to stratospheric ozone destruction. Surface measurements of N?O mole fractions have been used to attribute source and sink strengths, but large ...

Potter, Katherine Ellison

2011-01-01T23:59:59.000Z

35

Research Highlight  

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

Critical Evaluation of the ICARUS Portion of the ISCCP Simulator Using ARM Critical Evaluation of the ICARUS Portion of the ISCCP Simulator Using ARM Data Download a printable PDF Submitter: Mace, G., Utah State University Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Life Cycle Journal Reference: Mace GG, S Houser, S Benson, SA Klein, and QL Min. 2011. "Critical evaluation of the ISCCP simulator using ground-based remote sensing data." Journal of Climate, 24(6), doi:10.1175/2010JCLI3517.1. Figure 1. Comparison of actual cloud top pressure from ARM remote sensors compared to ISCCP (top) and after the ICARUS algorithm has been used to convert the measured cloud top pressures to ISCCP-like quantities (bottom). Figure 2. Comparison of various measures of optical depth. Top left shows

36

ARM - Publications: Science Team Meeting Documents  

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

Cirrus Cloud Statistics from a Cloud-Resolving Model Simulation Compared to Cirrus Cloud Statistics from a Cloud-Resolving Model Simulation Compared to Cloud Radar Observations Krueger, S.K. (a), Luo, Y. (a), Mace, G.G. (a), and Xu, K.-M. (b), University of Utah (a), NASA Langley Research Center (b) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Mace, Clothiaux, and Ackerman (2000; MCA) determined the properties of cirrus clouds derived from one year (December 1996 to November 1997) of MMCR data collected at the SGP ARM site in Oklahoma. They also used additional measurements to retrieve the bulk microphysical properties of thin cirrus cloud layers. We sampled CRM results in a way that allows direct comparison to MCA's observations and retrievals of cirrus cloud properties. This allows evaluation, in a statistical sense, of the CRM's

37

Research Highlight  

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

Dynamics and Atmospheric State on Cloud Vertical Overlap Dynamics and Atmospheric State on Cloud Vertical Overlap Download a printable PDF Submitter: Naud, C. M., Columbia University/NASA Goddard Institute for Space Studies Del Genio, A. D., NASA Mace, G., Utah State University Benson, S., Utah State University Clothiaux, E. E., Pennsylvania State University Kollias, P., McGill University Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Modeling Journal Reference: Naud, C, A Del Genio, GG Mace, S Benson, EE Clothiaux, and P Kollias. "Impact of dynamics and atmospheric state on cloud vertical overlap." Journal of Climate 218: 1758-1770. Mean overlap parameter α as a function of separation: (a,b) at SGP for all winter months of 2002-2004 and for 4 subsets of increasing 500 mb ω such

38

Research Highlight  

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

Cirrus Cloud Bimodal Size Distributions from ARM Remote Sensing Data Cirrus Cloud Bimodal Size Distributions from ARM Remote Sensing Data Download a printable PDF Submitter: Mace, G., Utah State University Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Life Cycle Journal Reference: Zhao Y, GG Mace, and JM Comstock. 2011. "The occurrence of particle size distribution bimodality in midlatitude cirrus as inferred from ground-based remote sensing data." Journal of the Atmospheric Sciences, 68(6), doi:10.1175/2010JAS3354.1. Figure 1. Frequency distribution of ice water content (top), effective radius (middle), and crystal concentration (bottom) derived from 313 h of cloud property retrievals using the bimodal algorithm. The distributions are shown as a function of the layer-mean temperature shown in the legend.

39

Microsoft PowerPoint - GG_DOE_Annual_Review_DE-FE0002386.ppt [Compatibility Mode]  

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

DE-FE0002386 DE-FE0002386 Geo-Chemo-Mechanical Studies for Geo Chemo Mechanical Studies for Permanent CO 2 Storage in Geologic Reservoirs Columbia University P t D J M tt Presenter: Dr. Juerg Matter February 24, 2011 Project Participants PI: Prof Peter Kelemen PI: Prof. Peter Kelemen Dept. of Earth & Environmental Sciences, Columbia University Co-PI: Prof. Juerg Matter Lamont-Doherty Earth Observatory, Columbia University Co-PI: Prof. Ah-Hyung Alissa Park D t t f E th & E i t l E i i C l bi Department of Earth & Environmental Engineering, Columbia University Graduate Students: Greeshma Gadikota (Department of Chemical Engineering, Columbia University Columbia University Amelia Paukert (Department of Earth & Environmental Sciences, Columbia University

40

Microsoft PowerPoint - GG_DOE_Annual_Review_DE-FE0002386.ppt...  

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

the cleaned sample to determine the yield 8 Place the cleaned mineral samples in a vacuum oven at 120 o C for 24 hours 9 Columbia River Flood Basalt Basalt Particle Size...

Note: This page contains sample records for the topic "gg mace kp" 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

Derivation of the Verlinde Formula from Chern-Simons Theory and the G/G model  

E-Print Network (OSTI)

We give a derivation of the Verlinde formula for the $G_{k}$ WZW model from Chern-Simons theory, without taking recourse to CFT, by calculating explicitly the partition function $Z_{\\Sigma\\times S^{1}}$ of $\\Sigma\\times S^{1}$ with an arbitrary number of labelled punctures. By a suitable gauge choice, $Z_{\\Sigma\\times S^{1}}$ is reduced to the partition function of an Abelian topological field theory on $\\Sigma$ (a deformation of non-Abelian BF and Yang-Mills theory) whose evaluation is straightforward. This relates the Verlinde formula to the Ray-Singer torsion of $\\Sigma\\times S^{1}$. We derive the $G_{k}/G_{k}$ model from Chern-Simons theory, proving their equivalence, and give an alternative derivation of the Verlinde formula by calculating the $G_{k}/G_{k}$ path integral via a functional version of the Weyl integral formula. From this point of view the Verlinde formula arises from the corresponding Jacobian, the Weyl determinant. Also, a novel derivation of the shift $k\\ra k+h$ is given, based on the index of the twisted Dolbeault complex.

M. Blau; G. Thompson

1993-05-04T23:59:59.000Z

42

GG4, Isothermal Method for Rapid, Steady-State Measurement of ...  

Science Conference Proceedings (OSTI)

I4, Electrical Spin Injection in a Hybrid Organic/Inorganic Spin-Polarized Light Emitting Diode (Spin-LED) I5, Properties of MnAs/GaMnAs/MnAs Magnetic...

43

SU?GG?J?18: A Surface?Based Respiratory Surrogate for 4D Imaging  

Science Conference Proceedings (OSTI)

Purpose: Real?time acquisition of three?dimensional surface tracking has potential as an external surrogate for respiratory correlated CTimaging and radiation therapy. This study assesses the GateCT surfacetracking system (VisionRT

C Noel; E Klein; K Moore

2008-01-01T23:59:59.000Z

44

G.G. Wicks, L.K. Heung and R.F. Schumacher  

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

systems for a variety of applications, such as sol-gel glasses including xerogels and aerogels- and phase-separated glass compositions. These can be treated later to produce...

45

GG2, Epitaxial Growth of Transition Metal Nitrides on MgO via DC ...  

Science Conference Proceedings (OSTI)

L6, PECVD-SiN, Si or Si/Al2O3-Capped ED-Mode AlN/GaN Inverters Hide details for [

46

Rock Art at the Kanaka-Briggs Creek Locality (10-GG-307), Gooding County, Idaho  

E-Print Network (OSTI)

D. 1976 Buffalo Jump Complexes in Owyhee County, Idaho.Miscellaneous Papers of the Idaho State University Museiunof Archaeological Resources. Idaho State Museum of Natural

Murphey, Kelly A

1987-01-01T23:59:59.000Z

47

BAND STRUCTURE CALCULATION FOR QUANTUM DOT SOLAR CELLS USING K.P Som N. Dahal  

E-Print Network (OSTI)

(lT ) Blackbody radiation function Il Spectral radiation intensity, W/m2 .sr.mm Ib,l Blackbody radiation intensity as blackbody radiation at temperature Tsur. In the case of furnace heating, the surrounding tempera- ture a furnace. Then, the radiative heat flux incident on both sides is the blackbody radiation intensity

Honsberg, Christiana

48

FY 2009 Annual Report of Joule Software Metric SC GG 3.1/2.5.2, Improve Computational Science Capabilities  

Science Conference Proceedings (OSTI)

The Joule Software Metric for Computational Effectiveness is established by Public Authorizations PL 95-91, Department of Energy Organization Act, and PL 103-62, Government Performance and Results Act. The U.S. Office of Management and Budget (OMB) oversees the preparation and administration of the President s budget; evaluates the effectiveness of agency programs, policies, and procedures; assesses competing funding demands across agencies; and sets the funding priorities for the federal government. The OMB has the power of audit and exercises this right annually for each federal agency. According to the Government Performance and Results Act of 1993 (GPRA), federal agencies are required to develop three planning and performance documents: 1.Strategic Plan: a broad, 3 year outlook; 2.Annual Performance Plan: a focused, 1 year outlook of annual goals and objectives that is reflected in the annual budget request (What results can the agency deliver as part of its public funding?); and 3.Performance and Accountability Report: an annual report that details the previous fiscal year performance (What results did the agency produce in return for its public funding?). OMB uses its Performance Assessment Rating Tool (PART) to perform evaluations. PART has seven worksheets for seven types of agency functions. The function of Research and Development (R&D) programs is included. R&D programs are assessed on the following criteria: Does the R&D program perform a clear role? Has the program set valid long term and annual goals? Is the program well managed? Is the program achieving the results set forth in its GPRA documents? In Fiscal Year (FY) 2003, the Department of Energy Office of Science (DOE SC-1) worked directly with OMB to come to a consensus on an appropriate set of performance measures consistent with PART requirements. The scientific performance expectations of these requirements reach the scope of work conducted at the DOE national laboratories. The Joule system emerged from this interaction. Joule enables the chief financial officer and senior DOE management to track annual performance on a quarterly basis. Joule scores are reported as success, goal met (green light in PART), mixed results, goal partially met (yellow light in PART), and unsatisfactory, goal not met (red light in PART). Joule links the DOE strategic plan to the underlying base program targets.

Kothe, Douglas B [ORNL; Roche, Kenneth J [ORNL; Kendall, Ricky A [ORNL

2010-01-01T23:59:59.000Z

49

SU?GG?T?509: Development of a Database and Software Tools for Outcome Analysis of Breast Cancer Radiotherapy  

Science Conference Proceedings (OSTI)

Purpose:Dose?volume response data for breast cancerradiotherapy (RT) are generally lacking. The purpose of this work is to develop a database and software tools to facilitate the analyses of short? and long?term radiationdose?volume responses of breast cancer RT. Method and Materials: As a part of the project aiming to develop the Research Analysis Platform and IGRTDatabases (RAPID)

P Prior; G Chen; X Li

2010-01-01T23:59:59.000Z

50

Steam Generating Units (duct burners) 40 CFR Part 60 Subpart GG- Standards of Performance for Stationary Gas Turbines  

E-Print Network (OSTI)

For nitrogen oxides has been determined to be selective catalytic reduction. l As authorized by the Northwest Clean Air Agency Regulation Section 300, this order is issued subject to the following restrictions and conditions: 1) The gas turbines shall burn either pipeline natural gas, or number 2 distillate oil with a sulfur content not to exceed 0.05 weight percent. The HRSG duct burners shall burn only pipeline natural gas. 2) Pollutant concentrations for each gas turbinelheat recovery steam generator stack shall not exceed the following:

unknown authors

2007-01-01T23:59:59.000Z

51

ARM - Publications: Science Team Meeting Documents  

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

8 Science Team Meeting 8 Science Team Meeting 1998 Proceedings Proceedings Sorted by Title Proceedings Sorted by Author Science Team Meeting Proceedings Cover image Proceedings of the Eighth Atmospheric Radiation Measurement (ARM) Science Team Meeting ARM-CONF-1998, March 1998 Tucson, Arizona For proper viewing, many of these proceedings should be viewed with Adobe Acrobat Reader. Download the latest version from the Adobe Reader website. View session papers by Author or Title. * Poster abstract only; an extended abstract was not provided by the author(s). History and Status of the ARM Program - March 1998 Session Papers A Cloud Climatology of the ARM CART Site S.M. Lazarus, S.K. Krueger, and G.G. Mace A Combination of the Separation of Variable and the T-Matrix Method for Computing Optical Properties of Spheroidal Particles*

52

Research Highlight  

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

New Method for Three-Dimensional Imaging of Cirrus Clouds New Method for Three-Dimensional Imaging of Cirrus Clouds Submitter: Liou, K., University of California, Los Angeles Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Properties Journal Reference: Liou, K.N, S.C. Ou, Y. Takano, J. Roskovensky, G.G. Mace, K. Sassen, and M. Poellot, 2002: "Remote sensing of three-dimensional inhomogeneous cirrus clouds using satellite and mm-wave cloud radar data," Geophysical Research Letters 29(9): 1360. Figure 1 ARM Data Enables the Development and Verification of a New Method for Three-Dimensional Imaging of Cirrus Clouds to Improve Climate Predictions Cirrus clouds cover about 30% of the Earth's surface. Because ice crystals both reflect sunlight and absorb thermal energy emitted from the earth

53

ARM - Publications: Science Team Meeting Documents  

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

Comparison of Boundary Layer Cloud Properties using Surface and GOES Comparison of Boundary Layer Cloud Properties using Surface and GOES Measurements at the ARM SGP Site Dong, X. (a), Minnis, P. (b), Smith, W.L., Jr. (b), and Mace, G.G. (a), University of Utah (a), NASA Langley Research Center (b) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Boundary layer cloud microphysical and radiative properties derived from GOES data during March 2000 cloud IOP at ARM SGP site are compared with simultaneous surface-based observations. The cloud-droplet effective radius, optical depth, and top-of-atmoshpere (TOA) albedo are retrieved from a 2-stream radiative transfer model in conjunction with ground-based measurements of cloud radar, laser ceilometer, microwave and solar radiometers. The satellite results are retrieved from GOES visible and

54

Research Highlight  

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

Remote Sensing of Cirrus Cloud Vertical Size Profile Using MODIS Data Remote Sensing of Cirrus Cloud Vertical Size Profile Using MODIS Data Download a printable PDF Submitter: Ou, S., University of California, Los Angeles Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Properties Journal Reference: Wang X, KN Liou, SS Ou, GG Mace, and M Deng. 2009. "Remote sensing of cirrus cloud vertical size profile using MODIS data." Journal of Geophysical Research - Atmospheres, 114, D09205, doi:10.1029/2008JD011327. (a) MODIS true color composite images for March 6, 2001 at 1736UTC, (b) retrieved Τc; (c) retrieved Dt for selected domain; (d) retrieved Db for selected domain; (e) scatter plot for retrieved Τc versus MODIS Τc for selected domain; (f) scatter plot for retrieved De versus MODIS De for

55

DOE/SC-ARM-TR-099 ARM Cloud Retrieval Ensemble Data Set  

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

099 099 ARM Cloud Retrieval Ensemble Data Set (ACRED) C Zhao MP Jensen S Xie GG Mace SA Klein SA McFarlane R McCoy EJ O'Connor JM Comstock A Protat J Delanoë MD Shupe M Deng D Turner M Dunn Z Wang RJ Hogan September 2011 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not

56

1  

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

Large-Scale Cloud Properties and Radiative Fluxes Large-Scale Cloud Properties and Radiative Fluxes over Darwin during Tropical Warm Pool - International Cloud Experiment P. Minnis, L. Nguyen, and W.L. Smith, Jr. National Aeronautics and Space Administration/Langley Research Center Hampton, Virginia R. Palikonka, J.K. Ayers, D.R. Doelling, M.L. Nordeen, D. Spangenberg, D.N. Phan, and M. Khaiyer Analytical Services & Materials, Inc. Hampton, Virginia G.G. Mace University of Utah Salt Lake City, Utah Introduction The Atmospheric Radiation Measurement (ARM) Program-sponsored Tropical Warm Pool - International Cloud Experiment (TWP-ICE) was conducted from 23 January - 13 February 2006 in Darwin, Australia, to characterize the properties of tropical cirrus and the convection that leads to their

57

ARM - Publications: Science Team Meeting Documents  

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

Shortwave and Longwave Flux and Cooling Rate Profiles for the ARM Central Shortwave and Longwave Flux and Cooling Rate Profiles for the ARM Central Facility Clough, S.A. (a), Delamere, J.S. (a), Mlawer, E.J. (a), Cederwall, R.T. (b), Revercomb, H. (c), Tobin, D. (c), Turner, D.D. (c), Knuteson, R.O. (c), Michalsky, J.J. (d), Kiedron, P.W. (d), Ellingson, R.G. (e), Krueger, S.K. (f), Mace, G.G. (f), Shippert, T. (g), and Zhang, M.H.(h), Atmospheric and Environmental Research, Inc. (a), Lawrence Livermore National Laboratory (b), University of Wisconsin-Madison (c), State University of New York, Albany (d), University of Maryland (e), University of Utah (f), Pacific Northwest National Laboratory (g), State University of New York, Stony Brook (h) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Accurate representations of the cooling rate profile, the surface flux and

58

Characterization of Class A low-level radioactive waste 1986--1990. Volume 7: Appendices K--P  

SciTech Connect

Under contract to the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research, the firms of S. Cohen & Associates, Inc. (SC&A) and Eastern Research Group (ERG) have compiled a report that describes the physical, chemical, and radiological properties of Class-A low-level radioactive waste. The report also presents information characterizing various methods and facilities used to treat and dispose non-radioactive waste. A database management program was developed for use in accessing, sorting, analyzing, and displaying the electronic data provided by EG&G. The program was used to present and aggregate data characterizing the radiological, physical, and chemical properties of the waste from descriptions contained in shipping manifests. The data thus retrieved are summarized in tables, histograms, and cumulative distribution curves presenting radionuclide concentration distributions in Class-A waste as a function of waste streams, by category of waste generators, and regions of the United States. The report also provides information characterizing methods and facilities used to treat and dispose non-radioactive waste, including industrial, municipal, and hazardous waste regulated under Subparts C and D of the Resource Conservation and Recovery Act (RCRA). The information includes a list of disposal options, the geographical locations of the processing and disposal facilities, and a description of the characteristics of such processing and disposal facilities. Volume 1 contains the Executive Summary, Volume 2 presents the Class-A waste database, Volume 3 presents the information characterizing non-radioactive waste management practices and facilities, and Volumes 4 through 7 contain Appendices A through P with supporting information.

Dehmel, J.C.; Loomis, D.; Mauro, J. [S. Cohen & Associates, Inc., McLean, VA (United States); Kaplan, M. [Eastern Research Group, Inc., Lexington, MA (United States)

1994-01-01T23:59:59.000Z

59

NEAC Policy Sub-Committee  

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

Coal - - plentiful, but major GG emitter plentiful, but major GG emitter - - Natural gas Natural gas - - less GG, but prices rising less GG, but prices rising - - Nuclear...

60

SU?GG?J?180: The Role of MRS in Radiation Therapy: Correlation Between T2?Weighted MRI, Biopsy and MRS  

Science Conference Proceedings (OSTI)

Purpose: To investigate the possibility of using objective parameters in MRS of the prostate to identify areas of viable cancer that might need higher radiation therapydose. Clinically

M Hossain; L Chen; M Buyyounouski; B Milestone; T Richardson; C Ma

2008-01-01T23:59:59.000Z

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61

Proceedings of the 2011 Winter Simulation Conference S. Jain, R.R. Creasey, J. Himmelspach, K.P. White, and M. Fu, eds.  

E-Print Network (OSTI)

.P. White, and M. Fu, eds. OPTIMIZED MANAGEMENT OF EXCURSIONS IN SEMICONDUCTOR MANUFACTURING Justin Nduhura time improved. 1 INTRODUCTION Semiconductor manufacturing is made of numerous and repetitive processing). With the increasing complexity and reduc- tion in the size of devices, additional control steps are introduced

Paris-Sud XI, Université de

62

Kato-S  

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

Hampton University Hampton, Virginia G. G. Mace Department of Meteorology University of Utah Salt Lake City, Utah E. E. Clothiaux Department of Meteorology The Pennsylvania State...

63

ARM - Publications: Science Team Meeting Documents  

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

Turbulence Properties Derived from MMCR Doppler Moments Mace, G. G., University of Utah Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting We are developing an...

64

dong(2)-99.PDF  

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

Research Center Hampton, Virginia G. G. Mace Meteorology Department University of Utah Salt Lake City, Utah E. E. Clothiaux Department of Meteorology The Pennsylvania State...

65

Evaluation of cirrus statistics produced by general circulation...  

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

produced by general circulation models using ARM data Hartsock, Daniel University of Utah Mace, Gerald University of Utah Benson, Sally University of Utah Category: Modeling Our...

66

Tropical anvil cirrus evolution from observations and numerical...  

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

cirrus evolution from observations and numerical simulations Deng, Min University of Utah Mace, Gerald University of Utah Category: Modeling The tropical anvil cirrus formation...

67

Interactive Uses of the NSDL: .Atmospheric Visualization Collection  

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

T. R. Gobble, H. M. Anthony, and D. Johnson Argonne National Laboratory Argonne, Illinois K. Andrew Eastern Illinois University Charleston, Illinois G. G. Mace University of...

68

Lessons Learned: Measuring Program Outcomes and Using Benchmarks  

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

Boulder County Local Energy Alliance Program (LEAP) Mountain Association for Community Economic Development (MACED) New York State Energy Research & Development Authority...

69

2008 Technology Transfer Awards  

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

conductivity than pure copper. Sensor Development and Advanced Concepts for Oil Shale Recovery Jonathan L. Mace (DE-6) Develop new methods that are based on combinations...

70

BioMed Central Research article DArT markers: diversity analyses and mapping in Sorghum bicolor  

E-Print Network (OSTI)

2008 Mace et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License

Bmc Genomics; Emma S Mace; Ling Xia; David R Jordan; Kirsten Halloran; Dipal K Parh; Eric Huttner; Peter Wenzl; Andrzej Kilian; Peter Wenzl; Andrzej Kilian

2008-01-01T23:59:59.000Z

71

Maureen Dunn | BNL  

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

cruises at sea and in research expeditions through rainforests of the Amazonas, Venezuela and Costa Rica Selected Publications Huang, D., Zhao, C., Dunn, M., Dong, X., Mace,...

72

Microsoft Word - H2_calibration_2013_v01.doc  

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

at the Max Planck Institute for Biogeochemistry (MPI-BGC) in Jena, Germany (Jordan and Steinberg, 2011). * For Mace Head, a preliminary link to this MPI scale was...

73

LBNL-6174E  

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

can be well described by the k.p interaction model when the electron-electron and electron-ion interactions are properly accounted for. Compared with the k.p interaction...

74

System description: IVY  

SciTech Connect

IVY is a verified theorem prover for first-order logic with equality. It is coded in ACL2, and it makes calls to the theorem prover Otter to search for proofs and to the program MACE to search for countermodels. Verifications of Otter and MACE are not practical because they are coded in C. Instead, Otter and MACE give detailed proofs and models that are checked by verified ACL2 programs. In addition, the initial conversion to clause form is done by verified ACL2 code. The verification is done with respect to finite interpretations.

McCune, W.; Shumsky, O.

2000-02-04T23:59:59.000Z

75

PowerPoint Presentation  

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

Surface and TOA Cloud Forcings Computed Using Several Cirrus Cloud Property Retrievals Surface and TOA Cloud Forcings Computed Using Several Cirrus Cloud Property Retrievals Chris Schwartz 1 , Jay Mace 1 , Roger Marchand 2 , Sally M c Farlane 2 , Matt Shupe 3 , Sergey Matrosov 3 , Min Deng 1 , Yuying Zhang 1 1. University of Utah, 2. Pacific Northwest National Laboratory, 3. University of Colorado Satellite-derived fluxes provided by Pat Minnis and Surface Radiation Analysis provided by Chuck Long Source Description Name Used in Plots G. Mace VZ, extinction constrained by Raman lidar Mace Bimodal Mace et al, 2006 Combination of retrieval algorithms, parameterizations, and empirical equations Ciret4 Yuying Zhang Retrieval based on reflectivity and radiance Zhang ZR Roger Marchand Retrievals base on reflectivity and Doppler velocity, parameterized for several different ice

76

ARM - Publications: Science Team Meeting Documents  

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

Cloud Layer Thickness and Temperature Vernon, E.N.(a) and Mace, G.G.(b), University of Utah (a), University of Utah (b) Twelfth Atmospheric Radiation Measurement (ARM) Science...

77

ARM - Publications: Science Team Meeting Documents  

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

MOD06 Cloud Products and the ARM SGP Zhang, Y.(a) and Mace, G.G.(b), University of Utah (a), University of Utah (b) Thirteenth Atmospheric Radiation Measurement (ARM) Science...

78

A TWP-ICE High-Level Cloud Case Study  

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

A TWP-ICE High-Level Cloud Case Study Mace, Gerald University of Utah Category: Field Campaigns The Tropical Warm Pool International Cloud Experiment (TWP ICE) was conducted near...

79

lazarus-98.pdf  

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

of the ARM CART Site S. M. Lazarus, S. K. Krueger, and G. G. Mace University of Utah Salt Lake City, Utah Introduction The Atmospheric Radiation and Measurement (ARM) Pro-...

80

ARM - Publications: Science Team Meeting Documents  

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

Cloud Experiment (WB57 MidCiX) Mace, G.G.(a) and Heymsfield, A.J.(b), University of Utah (a), National Center for Atmospheric Research (b) Cloud property retrieval algorithms,...

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Microsoft PowerPoint - McFarquhar_2007.ppt  

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

Small Ice Crystals during TWP-ICE Greg M. McFarquhar 1 , Junshik Um 1 , Matt Freer 1 , Darrel Baumgardner 2 , Gregory L. Kok 3 and Gerald G. Mace 4 1 Department of Atmospheric...

82

Mountain Association for Community Economic Development- Energy Efficient Enterprise Loan Program  

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

The Mountain Association for Community Economic Development (MACED) offers loans to small and mid-sized businesses, non-profits, schools and municipalities to improve energy efficiency through its...

83

Mountain Association for Community Economic Development- How$martKY On Bill Financing Energy Efficiency Program  

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

Four rural utility cooperatives in Eastern Kentucky (Big Sandy RECC, Fleming-Mason RECC, Grayson RECC, and Jackson Energy) work with MACED to provide energy retrofits as part of utility service...

84

--No Title--  

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

June, 2012 1. The original ADS GCMS instruments at Mace Head and Cape Grim were retired in December 2004, and replced by new generation of improved GC-MS system. The new GC-MS...

85

X:\\ARM_19~1\\P185-192.WPD  

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

Micropulse lidar cloud base frequency. A One-Year Cloud Climatology Using Data from the Southern Great Plains (SGP) Site Micropulse Lidar G. G. Mace and T. P. Ackerman Penn State...

86

ARM - Publications: Science Team Meeting Documents  

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

Sensing of Cirrus Cloud Parameters Using AVHRR and MODIS Data Coupled With Radar and Lidar Measurements Ou, S.C.(a), Liou, K.N.(a), Takano, Y.(a), Mace, G.G.(b), Sassen, K.(b),...

87

Herwig++ 2.0 Release Note.  

E-Print Network (OSTI)

: The transverse momentum of the Z0 boson at the Tevatron calculated by HERWIG6.5 and Herwig++ compared with run I CDF data taken from [7] with and without matrix element corrections. Photon plus jet production, i.e. qq ? ?g, qg ? ?q; Higgs boson production, i... .e. qq/gg ? h0; Higgs boson plus jet production, i.e. gg ? gh0, qg ? qh0 and qq ? gh0; Heavy quark pair production, i.e. qq/gg ? QQ; QCD 2 ? 2 scattering processes, i.e. gg ? gg, gg ? qq, qq ? gg, qg ? qg, qq ? qq, qq ? qq; in addition the W...

Gieseke, Stefan; Grellscheid, D; Hamilton, K; Ribon, Alberto; Richardson, P; Seymour, Michael H; Stephens, Phil; Webber, Bryan R

88

NOTE: OPTIMAL NON-HOMOGENEOUS COMPOSITES FOR ...  

E-Print Network (OSTI)

where real coefficients ?k,?p ? 0 determine the importance of kinetic and potential parts of stored elastic energy respectively. Moreover, 0 ? H(x) ? 1 is a...

89

Experiments with the Negotiated Boolean Queries of the ...  

Science Conference Proceedings (OSTI)

... ROC OR India OR Philippines OR PH OR Cambodia OR KH OR Vietnam OR VN OR "North Korea" OR "South Korea" OR KP OR Thailand OR Asia ...

2010-02-03T23:59:59.000Z

90

NECDC Word Style Guide (U)  

National Nuclear Security Administration (NNSA)

et al. 4 ) The technique RAMZES-KP employs the curvilinear coordinate system ( , , S r including, as a special case, the spherical, cylindrical and toroidal coordinate systems...

91

UNIRIB Publications: 2008 Bibliography  

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

International Conference on Exotic Nuclei and Atomic Masses September 7-13, 2008, Ryn, Poland Decay Spectroscopy of Cu and 'Ga, C.J. Gross, K.P....

92

PowerPoint Presentation  

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

resolved Power capture and conversion in line with prediction 11 CF16539GG 1 OCEAN POWER DELIVERY LTD PROJECTS 12 CF16539GG 1 Enersis - Project 1 Enersis Portugal's largest...

93

M1, Material and Electronic Properties of CVD Graphene Grown on ...  

Science Conference Proceedings (OSTI)

GG6, Thermomagnetic Transport Properties of (AgxSbTex/2+1)15(GeTe)85 Thermoelectric Materials GG7, Thermoelectric Properties of Sn-Rich Pb1?xSnx

94

AA2, O-H-Li-Complex in Hydrothermally Grown Single Crystalline ZnO  

Science Conference Proceedings (OSTI)

GG6, Thermomagnetic Transport Properties of (AgxSbTex/2+1)15(GeTe)85 Thermoelectric Materials GG7, Thermoelectric Properties of Sn-Rich Pb1?xSnx

95

Unclassified Controlled Nuclear Information General Guideline  

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

GG-5, is a record of decisions made by the Director, OC, as to what general subject areas are UCNI. Note: GG-5 may only be used by the Director, OC, to make determinations as to whether information...

96

Intelligent controllers in HVDC system based on PSO algorithm  

Science Conference Proceedings (OSTI)

In this paper, particle swarm optimization (PSO) algorithm is improved and employed in designing HVDC system's proportional- integral (PI) controller. Feasible region of kp and ki is derived from scanning the kp ... Keywords: PI controller, high voltage direct current, particle swarm optimization

Zhengqiang Song; Ping Zhang; Xiaofa Zhou

2009-05-01T23:59:59.000Z

97

Can WAAS Availability Be Inferred From Geomagnetic Data? An Analysis Seebany Datta-Barua, Todd Walter, Juan Blanch, Per Enge  

E-Print Network (OSTI)

Can WAAS Availability Be Inferred From Geomagnetic Data? An Analysis Seebany Datta-Barua, Todd magnetosphere-ionosphere coupling is to be on alert when the planetary index of geomagnetic activity Kp reaches availability, for the known WAAS storm (i.e. low-availability) days and the geomagnetic indices of Kp and Dst

Stanford University

98

Modeling Zn Adsorption and Desorption to Soils Zhenqing Shi1,2  

E-Print Network (OSTI)

, Newark, DE 19717, U.S.A. Keywords: adsorption, desorption, kinetics, soil organic matter, WHAM 1 was considered as the sole adsorbent for Zn binding to the tested soils (1). The mechanistic model WHAM was used to obtain Kp1 and Kp2 at various reaction conditions. In WHAM V calculations (3), Zn can bind to either

Sparks, Donald L.

99

CSEM WP 117 Vertical Integration in Restructured Electricity Markets  

E-Print Network (OSTI)

.M., W.A. Williams, P.C. Thornton, K.P. McLaughlin, C.M. Tobalske, B.A. Maxell, D.P. Hendricks, C.M. Hart, J.C. Winne, W.A. Williams, P.C. Thornton, Z. Ma, C.M. Tobalske, M.M. Thornton, K.P. McLaughlin, T

California at Berkeley. University of

100

AGE-1 WALLEYE POLLOCK IN THE EASTERN BERING SEA: DISTRIBUTION, ABUNDANCE, DIET, AND ENERGY DENSITY  

E-Print Network (OSTI)

AGE-1 WALLEYE POLLOCK IN THE EASTERN BERING SEA: DISTRIBUTION, ABUNDANCE, DIET, AND ENERGY DENSITY performed at sea · Energy density estimated using bomb calorimetry for samples from BASIS and MACE surveys · Confirm ages of age-0 and age-1 pollock using otoliths · Distribution of age-1's further north than age-0

Note: This page contains sample records for the topic "gg mace kp" from the National Library of EnergyBeta (NLEBeta).
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101

Detection of Cloud-Base Height Using Jenoptik CHM15K and Vaisala CL31 Ceilometers  

Science Conference Proceedings (OSTI)

Twelve case studies of multilayer cloud-base height (CBH) retrievals from two collocated ceilometers (Vaisala CL31 and Jenoptik CHM15K) have been analyzed. The studies were performed during the period from September to December 2008 at the Mace ...

Giovanni Martucci; Conor Milroy; Colin D. ODowd

2010-02-01T23:59:59.000Z

102

Reconstruction of microbial and environmental conditions in an Australian hypersaline ecosystem from the mid-Pleistocene through the present  

E-Print Network (OSTI)

JE, in Lacustrine Petroleum Source Rocks, Fleet AJ, Kelts K,JK, in Lacustrine Petroleum Source Rocks, Fleet AJ, Kelts K,P, in Lacustrine Petroleum Source Rocks, Fleet AJ, Kelts K,

Jones, Claudia Meredith

2011-01-01T23:59:59.000Z

103

Kadomtsev-Petviashvili equation: Nonlinear self-adjointness and conservation laws  

E-Print Network (OSTI)

The method of nonlinear self-adjointness is applied to the Kadomtsev-Petviashvili equation. The infinite set of conservation laws associated with the infinite algebra of Lie point symmetry of the KP equation is constructed.

Nail H. Ibragimov

2011-10-16T23:59:59.000Z

104

SCOSTA-CL Specifications v 1.2 Issue Date July 06, 2007  

E-Print Network (OSTI)

image (f,(R,) + F,,)/FP = R;/FP. Thus Ri/FD s k(p), a field, and so FP is a maximal ideal of Rp'. We

Moona, Rajat

105

Investigating Time-Scale Effects on Reference Evapotranspiration from Epan Data in North China  

Science Conference Proceedings (OSTI)

Reference evapotranspiration (ETo) and pan evaporation (Epan) are key parameters in hydrological and meteorological studies. The authors objectives were to evaluate the ratio of ETo to Epan (kp) at daily and monthly scales and to predict average ...

Yi Li; Robert Horton; Tusheng Ren; Chunyan Chen

2010-05-01T23:59:59.000Z

106

Interest-based Negotiations at Kaiser Permanente  

E-Print Network (OSTI)

In 1997 Kaiser Permanente (KP) and a coalition of 26 local unions representing nearly 70,000 Kaiser employees created what is now the nation's largest and most ambitious ...

MCKERSIE, ROBERT B.

2003-06-27T23:59:59.000Z

107

Edited Synoptic Cloud Reports from Ships and Land Stations Over...  

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

of Energy (KP 05 02 00 0) Printed by the Carbon Dioxide Information Analysis Center World Data Center-A for Atmospheric Trace Gases OAK RIDGE NATIONAL LABORATORY Oak Ridge,...

108

BES Science Highlights  

Office of Science (SC) Website

Finding Hidden Oil and Gas Reserves kp-fossil-thumb.jpg' align'left' style'height:75px;width:135px;margin-right:10px;margin-bot...

109

JEM Table of Contents: September 1997  

Science Conference Proceedings (OSTI)

... Submicron Structure Geometry [pp. 1090-1095] V. Svilan, K.P. Rodbell, L.A. Clevenger, C. Cabral, Jr., R.A. Roy, C. Lavoie, J. Jordan-Sweet, and J.M.E. Harper...

110

JEM Abstracts: September 1997  

Science Conference Proceedings (OSTI)

V. SVILAN, K.P. RODBELL, L.A. CLEVENGER, C. CABRAL, JR., R.A. ROY, C. LAVOIE, J. JORDAN-SWEET, and J.M.E. HARPER IBM T.J. Watson Research...

111

Control of Neoclassical Tearing Modes for Improved Performance in ITER (A25782)  

E-Print Network (OSTI)

Proc. Of 5th IAEA Technical Meeting On Steady-State Operations Of Magnetic Fusion Devices, Daejeon, Republic Of Korea, 20075th IAEA Technical Committee Meeting on Steady State Operation of Magnetic Fusion Devices Daejeon, KP, 2007999613960

Prater, R.

2007-05-17T23:59:59.000Z

112

Tuning of the optical properties of [11k] grown InAs quantum dots by the capping layer  

Science Conference Proceedings (OSTI)

A three-dimensional k.p calculation including strain and piezoelectricity shows that for large [11k] grown QD, the presence of an (In,Ga)As capping layer leads to an increase of the optical transition energy, in contrast to the expected decrease. The ... Keywords: 71.35.Ji, 71.70.Gm, 73.21.La, 78.20.Ls, Capping, High index surfaces, K.p theory, Quantum dots

V. Mlinar; F. M. Peeters

2008-03-01T23:59:59.000Z

113

OVERVIEW OF THE DEVELOPMENT OF WATER-MIST ...  

Science Conference Proceedings (OSTI)

... by the expansion of the water mist to steam. ... of Operational Parameters for Low Pressure Water Mist ... Back, GG, and Beyler, C. L., A Model for ...

2011-10-27T23:59:59.000Z

114

Light Scattering Characteristics and Size Distribution of ...  

Science Conference Proceedings (OSTI)

... Ian Thomas at CESARE. REFERENCES ... [19] Mulholland, GW, Hartman, AW, Hembree, GG, Marx, E., and Lettieri, T. R., "Development of a one ...

2003-12-16T23:59:59.000Z

115

NIST Part 3.pmd  

Science Conference Proceedings (OSTI)

... Ilavsky, J., Long, GG, Multiple Small- Angle ... a Symmetrical Segregating Polymer Blend Film Above ... of PVDF/ Acrylic Copolymer Blends Before and ...

2003-11-10T23:59:59.000Z

116

Impact of Primary Gleason Grade on Risk Stratification for Gleason Score 7 Prostate Cancers  

SciTech Connect

Purpose: To evaluate the primary Gleason grade (GG) in Gleason score (GS) 7 prostate cancers for risk of non-organ-confined disease with the goal of optimizing radiotherapy treatment option counseling. Methods: One thousand three hundred thirty-three patients with pathologic GS7 were identified in the Duke Prostate Center research database. Clinical factors including age, race, clinical stage, prostate-specific antigen at diagnosis, and pathologic stage were obtained. Data were stratified by prostate-specific antigen and clinical stage at diagnosis into adapted D'Amico risk groups. Univariate and multivariate analyses were performed evaluating for association of primary GG with pathologic outcome. Results: Nine hundred seventy-nine patients had primary GG3 and 354 had GG4. On univariate analyses, GG4 was associated with an increased risk of non-organ-confined disease. On multivariate analysis, GG4 was independently associated with seminal vesicle invasion (SVI) but not extracapsular extension. Patients with otherwise low-risk disease and primary GG3 had a very low risk of SVI (4%). Conclusions: Primary GG4 in GS7 cancers is associated with increased risk of SVI compared with primary GG3. Otherwise low-risk patients with GS 3+4 have a very low risk of SVI and may be candidates for prostate-only radiotherapy modalities.

Koontz, Bridget F., E-mail: bridget.koontz@duke.edu [Department of Radiation Oncology, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States); Tsivian, Matvey [Division of Urology, Department of Surgery, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States); Mouraviev, Vladimir [Department of Radiation Oncology, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States); Sun, Leon [Division of Urology, Department of Surgery, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States); Vujaskovic, Zeljko [Department of Radiation Oncology, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States); Moul, Judd [Division of Urology, Department of Surgery, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States); Lee, W. Robert [Department of Radiation Oncology, Duke Prostate Center, Duke University Medical Center, Durham, NC (United States)

2012-01-01T23:59:59.000Z

117

Some Thoughts on Econometric Information Recovery  

E-Print Network (OSTI)

Thoughts on Econometric Information Recovery George G. JudgeSome Thoughts on Econometric Information Recovery George G.G. Judge. ed. 2013. An Information Theoretic Approach to

Judge, George G.

2013-01-01T23:59:59.000Z

118

ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement  

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

An Integrated Column Description An Integrated Column Description of the Atmosphere An Integrated Column Description of the Atmosphere Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Pacific Northwest National Laboratory Pacific Northwest National Laboratory The "other" Washington ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Credits to Credits to * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Outline Outline * A little philosophy

119

Section 33  

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

in in ' c n I o n exp (&T in / µ i ) T i,n ' µ i log (I o n / I i,n ) % µ i log (c n ) Session Papers 145 (1) (2) Multi-Spectral Atmospheric Column Extinction Analysis of Multi-Filter Rotating Shadowband Radiometer Measurements A.A. Lacis and B.E. Carlson National Aeronautics and Space Administration/Goddard Institute for Space Studies New York, New York B. Cairns Columbia University National Aeronautics and Space Administration/Goddard Institute for Space Studies New York, New York Abstract MACE Analysis of MFRSR Multi-spectral Atmospheric Column Extinction (MACE) analysis of multi-filter rotating shadowband radiometer (MFRSR) measurements yield detailed time series information on the variations of the column amounts of atmospheric NO 2 and ozone and of aerosol optical depth, including the effective

120

ARM - Field Campaign - Colorado: The Storm Peak Lab Cloud Property  

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

govCampaignsColorado: The Storm Peak Lab Cloud Property Validation govCampaignsColorado: The Storm Peak Lab Cloud Property Validation Experiment (STORMVEX) Campaign Links STORMVEX Website Related Campaigns Colorado: CFH/CMH Deployment to StormVEx 2011.02.01, Mace, AMF Colorado: SP2 Deployment at StormVEx 2010.11.15, Sedlacek, AMF Colorado : Cavity Attenuated Phase Shift 2010.11.15, Massoli, AMF Colorado: Infrared Thermometer (IRT) 2010.11.15, Mace, AMF Colorado: StormVEX Aerosol Size Distribution 2010.11.15, Hallar, AMF Colorado: Direct Measurements of Snowfall 2010.11.15, McCubbin, AMF Colorado: Thunderhead Radiative Flux Analysis Campaign 2010.11.15, Long, AMF Colorado: Ice Nuclei and Cloud Condensation Nuclei Characterization 2010.11.15, Cziczo, AMF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA.

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121

Monte Carlo simulation of ion trajectories in the modified PDX thermal charge exchange analyzer  

DOE Green Energy (OSTI)

An improved design for the present PDX thermal charge exchange analyzer (MACE) has been proposed by one of the authors, in which the five cylindrical electrostatic plates for mass separation are replaced by a single flat, electrostatic deflection plate. An existihg Monte Carlo code that simulated the passage of ions through the MACE analyzer was modified to examine the feasibility of this change. The resulting calculations were used to optimize detector positions and collimation requirements. The first analyzer to be placed on PDX will be of the old design, similar to the present PLT analyzer. However, if the design reported here is successful on the test stand, the future PDX analyzers will all be of the new, single electrostatic plate variety. A further advantage will be the ability to install as many as ten detectors instead of the current five, thus providing twice as many energy channels for each shot. Also, both mass species (H, D) can be measured concurrently, if desired.

Kaita, R.; Davis, S.L.; Medley, S.S.

1978-12-01T23:59:59.000Z

122

Performance Analysis Integration in the Uintah Software Development Cycle  

E-Print Network (OSTI)

], SPASS [32], Vampire [31], and E [22]. Despite these individual achievements, the extreme difficulty (expend more energy in directions that are successful). Second, for unaware observers, a lack of progress 0.6 SPASS 0.99T Vampire 0.24 Bliksem 1.01 SNARK 990218 OtterMACE 4.5 S-SETHEO 0.0 SCOTT 4.4.2 FDP 0

Utah, University of

123

Historical emissions of black and organic carbon aerosol from energy-related combustion, 1850-2000 - article no. GB2018  

SciTech Connect

We present an emission inventory of primary black carbon (BC) and primary organic carbon (OC) aerosols from fossil fuel and biofuel combustion between 1850 and 2000. We reconstruct fossil fuel consumption and represent changes in technology on a national and sectoral basis. Our estimates rely on new estimates of biofuel consumption, and updated emission factors for old technologies. Emissions of black carbon increase almost linearly, totaling about 1000 Gg in 1850, 2200 Gg in 1900, 3000 Gg in 1950, and 4400 Gg in 2000. Primary organic carbon shows a similar pattern, with emissions of 4100 Gg, 5800 Gg, 6700 Gg, and 8700 Gg in 1850, 1900, 1950, and 2000, respectively. Biofuel is responsible for over half of BC emission until about 1890, and dominates energy-related primary OC emission throughout the entire period. Coal contributes the greatest fraction of BC emission between 1880 and 1975, and is overtaken by emissions from biofuel around 1975, and by diesel engines around 1990. Previous work suggests a rapid rise in BC emissions between 1950 and 2000. This work supports a more gradual increase between 1950 and 2000, similar to the increase between 1850 and 1925; implementation of clean technology is a primary reason.

Bond, T.C.; Bhardwaj, E.; Dong, R.; Jogani, R.; Jung, S.K.; Roden, C.; Streets, D.G.; Trautmann, N.M. [University of Illinois, Urbana, IL (USA). Dept. of Civil & Environmental Engineering

2007-05-15T23:59:59.000Z

124

Strong effect of weak diffusion on scalar turbulence at large scales  

E-Print Network (OSTI)

Passive scalar turbulence forced steadily is characterized by the velocity correlation scale, $L$, injection scale, $l$, and diffusive scale, $r_d$. The scales are well separated if the diffusivity is small, $r_d\\ll l,L$, and one normally says that effects of diffusion are confined to smaller scales, $r\\ll r_d$. However, if the velocity is single scale one finds that a weak dependence of the scalar correlations on the molecular diffusivity persists to even larger scales, e.g. $l\\gg r\\gg r_d$ \\cite{95BCKL}. We consider the case of $L\\gg l$ and report a counter-intuitive result -- the emergence of a new range of large scales, $L\\gg r\\gg l^2/r_d$, where the diffusivity shows a strong effect on scalar correlations.

M. Chertkov; I. Kolokolov; V. Lebedev

2007-06-20T23:59:59.000Z

125

g4{?3?!e5*??A?3rl*m^?e  

Science Conference Proceedings (OSTI)

x???}*?*?gg???

2005-06-09T23:59:59.000Z

126

1 993~ ~3 Wl C~,~ 18 IUD  

E-Print Network (OSTI)

} , PP. 17-24 .1984. [3 J M. N. ~1f gg:R: ~ , lftr §l~w, ~{~~, j@j~'H.fff.'f:l!l&t±. 1983 "f.' [4] 1f

Zhang, Yuwen

127

Standard test method for determination of bromine and chlorine in UF6 and uranyl nitrate by X-Ray fluorescence (XRF) spectroscopy  

E-Print Network (OSTI)

1.1 This method covers the determination of bromine (Br) and chlorine (Cl) in uranium hexafluoride (UF6) and uranyl nitrate solution. The method as written covers the determination of bromine in UF6 over the concentration range of 0.2 to 8 ?g/g, uranium basis. The chlorine in UF6 can be determined over the range of 4 to 160 ?g/g, uranium basis. Higher concentrations may be covered by appropriate dilutions. The detection limit for Br is 0.2 ?g/g uranium basis and for Cl is 4 ?g/g uranium basis. 1.2 This standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

American Society for Testing and Materials. Philadelphia

2001-01-01T23:59:59.000Z

128

The Dresden Bombing as Portrayed in German Accounts, East and West  

E-Print Network (OSTI)

part of the strategy.n14 sng_QQyg~nmgn~, UCLA HISTORICALand Nagasaki, Hi~Qhimft_sng Nggft~i~_Thg_hYil~_Mggi

Corwin, Elizabeth C.

1987-01-01T23:59:59.000Z

129

Quarterly title list for the period ending June 1975  

SciTech Connect

A list of the laboratory reports issued the publications made, the articles submitted for publication as well as the lectures held are dealt with. Abstracts of the works are to a large extent included with the titles. (GG/LH)

1975-01-01T23:59:59.000Z

130

Engineering online and in-person social networks to sustain physical activity: application of a conceptual model  

E-Print Network (OSTI)

GG, Ives A, Foster GD: Using facebook and text messaging toComing and Going on Facebook. http://www.pewinternet.org/~/Behav Neurosci 2010, 43. Facebook Reports First Quarter 2013

2013-01-01T23:59:59.000Z

131

--No Title--  

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

at the time of preparation, the calculated americium ingrowth from the decay of 241 Pu present in small amounts in the CRM is 21 gg plutonium as of October 1,1984, and...

132

High-fidelity national carbon mapping for resource management and REDD+  

E-Print Network (OSTI)

Parker GG, Harding DJ: Lidar remote sensing for ecosystemaccuracies with a simple LiDAR metric. Remote Sens Environ.detection and ranging (LiDAR) for three- dimensional studies

2013-01-01T23:59:59.000Z

133

U  

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

UNCLASSIFIED CONTROLLED NUCLEAR INFORMATION (UCNI) GENERAL GUIDELINE GG-5 February 2004 Information Classification and Control Policy Security Policy Staff Office of Security and Safety Performance Assurance (SSA) Washington, DC 20585 U.S. Department of Energy UNCLASSIFIED CONTROLLED NUCLEAR INFORMATION General Guideline GG-5 February 2004 Change Date _____________New Pages____________ Approved and Issued by: Joan G. Hawthorne Director Information Classification and Control Policy Security Policy Staff Office of Security and Safety Performance Assurance (SSA) Washington, DC 20585 TABLE OF CONTENTS INTRODUCTION .......................................................................................................... 1

134

Williams et al. Reply (to the Comment by Dumin on "Progress in Lunar Laser Ranging Tests of Relativistic Gravity")  

E-Print Network (OSTI)

A decreasing gravitational constant, G, coupled with angular momentum conservation is expected to increrase a planetary semimajor axis, a, as \\dot a/a=-\\dot G/G. Analysis of lunar laser ranging data strongly limits such temporal variations and constrains a local (~1 AU) scale expansion of the solar system as \\dot a/a=-\\dot G/G =-(4\\pm9)\\times10^{-13} yr^{-1}, including that due to cosmological effects.

James G. Williams; Slava G. Turyshev; Dale H. Boggs

2006-12-27T23:59:59.000Z

135

FOR IMMEDIATE RELEASE CONTACT: MATT LETOURNEAU  

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

FOR IMMEDIATE RELEASE CONTACT: MATT LETOURNEAU APRIL 8, 2008 (202) 224-6977 mrep~red qext of rKpK pen~tor mete sK aomenici's oem~rks ~t bf^'s ^nnu~l bnergy `onference OMMU Thank you, Administrator Caruso, for that introduction, and for the invitation to speak here this morning.

136

Kinetic Isotope Effects from Hybrid Classical and Quantum  

E-Print Network (OSTI)

-order perturbation (KP2) is sufficiently accurate for chemical applications.7 We describe an automated, numerical in chemical applications to determine KIEs for chemical reactions, and because of its fast convergenceCHAPTER 5 Kinetic Isotope Effects from Hybrid Classical and Quantum Path Integral Computations

Minnesota, University of

137

L-H Transition Studies on DIII-D to Determine H-Mode Access for Operational Scenarios in ITER (A26864)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXC/2-4Ra23rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617725

Gohil, P.

2010-10-15T23:59:59.000Z

138

DIII-D Experimental Simulation of ITER Scenario Access and Termination (A26858)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXS/P2-1123rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617660

Jackson, G.L.

2010-10-19T23:59:59.000Z

139

Runaway Electron Confinement Modeling for DIII-D, Alcator C-Mod, and ITER (A26880)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper THS/9-223rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617990

Izzo, V.A.

2010-11-12T23:59:59.000Z

140

Main Chamber Plasma-Wall Interaction Studies in DIII-D in Support of ITER (A26895)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXD/P3-3623rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617700

Watkins, J.G.

2010-10-13T23:59:59.000Z

Note: This page contains sample records for the topic "gg mace kp" 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

ITER Predictions Using the GYRO Verified and Experimentally Validated TGLF Transport Model (A26874)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper THC/3-0323rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617985

Kinsey, J.E.

2010-11-12T23:59:59.000Z

142

A First Principles Predictive Model of the Pedestal Height and Width - Development, Testing, and ITER Optimizastion With the EPED Model (A26891)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper THS/1-123rd IAEA Fusion Energy Conference Daejeon, KP, 2010999618690

Snyder, P.B.

2010-04-13T23:59:59.000Z

143

Finite Orbit Monte-Carlo Simulation of Ion Cyclotron Resonant Heating Scenarios in DIII-D, NSTX, KSTAR and ITER (A26870)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper THW/P3-0623rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617965

Choi, M.

2010-11-12T23:59:59.000Z

144

R&D ITPA Activities in Support of Optimizing ITER Diagnostic Performance (A26876)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper ITR/P1-0223rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617680

Boivin, R.L.

2010-10-14T23:59:59.000Z

145

Integrated Modeling of Steady-State Scenarios and Heating and Current Drive Mixes for ITER (A26896)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper ITR/P1-3523rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617690

Murakami, M.

2010-10-12T23:59:59.000Z

146

Advances Toward QH-Mode Viability for ELM-Free Operation in ITER (A26887)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXS/1-223rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617720

Garofalo, A.M.

2010-10-15T23:59:59.000Z

147

Development of Advanced Inductive Scenarios for ITER (A26898)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXC/P3-0523rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617710

Luce, T.C.

2010-10-12T23:59:59.000Z

148

Disruption, Halo Current and Rapid Shutdown Database Activities for ITER (A26885)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper ITR/P1-2623rd IAEA Fusion Energy Conference Daejeon, KP, 2010999618055

Wesley, J.C.

2010-10-13T23:59:59.000Z

149

Testing of ITER-Class ECH Transmission Line Components at the JAEA Radio-Frequency Test Stand (A26850)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper ITR/P1-0923rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617640

Callis, R.W.

2010-09-22T23:59:59.000Z

150

Experiment and Modeling of ITER Demonstration Discharges in the DIII-D Tokamak (A26899)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXC/P2-0523rd IAEA Fusion Energy Conference Daejeon, KP, 2010999618065

Park, J.M.

2010-10-13T23:59:59.000Z

151

List of Publications Andia, P.C., F. Costanzo, and G.L. Gray, 2000 "On the estimation of intrinsic stresses and elastic  

E-Print Network (OSTI)

of Fundamental Asphalt Mixture Properties", Journal of Materials in Civil Engineering, ASCE, Vol. 16, Issue 5 of the 8th ACI/CANMET International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans, and K.P. Maynard, 2007, "Torsion response of a cracked stainless steel shaft," Fat. Fract. Engng. Mat

Demirel, Melik C.

152

Kheshbn No. 120- Fall 1992- Journal  

E-Print Network (OSTI)

1956 pK pnya oTO'VaKnyn p ny .anp^nca tir k yny"T r pnya pnyn lynya pk "iy Vm nttnyi Va anp 7 0 oki no t k .a'payVpnninyVwaVK .a ,paay Kaa) nyp>anp h .uaKryraKpKao" p n y a a

1992-01-01T23:59:59.000Z

153

Solenoid-Free Startup Experiments in DIII-D (A26854)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXC/P2-0323rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617650

Leuer, J.A.

2010-09-22T23:59:59.000Z

154

PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073  

E-Print Network (OSTI)

is of great practical interest because it could potentially help to avert catastrophic loss of power nonlinear dependencies among observed plasma and electromagnetic field variables in the coupled solar wind the nonlinear dynamics underlying the time evolution of the Dst and Kp geomagnetic indices, given solar wind

155

Infusing Active Learning into the Large-enrollment Biology Class: Seven Strategies, from the Simple to Complex  

E-Print Network (OSTI)

, 1993). Alternatively, various handbooks (Silberman, 1996) provide ideas for dressing up these more fundamental concepts through asking and answering their own questions, or to do in-depth research and make. Angelo, T.A., and Cross, K.P. (1993). Classroom Assessment Techniques: A Handbook for College Teachers

156

WILLIAM L. FOURNEY Keystone Professor and Associate Dean  

E-Print Network (OSTI)

.C. Holloway and D.B. Barker, Chapter 8, Mechanics of Oil Shale, Edited by K.P. Chong and J.W. Smith, Elsevier of Geotechnical Engineering, Vol. 120, No. 10, pp. 1684- 1703, 1994. 46. "Response of Oil Shale to Fragmentation;35."Fracture Control Blasting Techniques for Oil Shale Mining", with Chapman Young, 1983 Eastern Oil Shale

Celi, Roberto

157

Two dimensional periodic box-ball system and its fundamental cycle  

E-Print Network (OSTI)

We study a 2-dimensional Box-Ball system which is a ultradiscrete analog of the discrete KP equation. We construct an algorithm to calculate the fundamental cycle, which is an important conserved quantity of the 2-dim. Box-Ball system with periodic boundary condition, by using the tropical curve theory.

Shinsuke Iwao

2011-02-22T23:59:59.000Z

158

Plasma Facing Material Selection - A Critical Issue for Magnetic Fusion Power Development (A26873)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper FTP/P1-3123rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617635

Wong, C.P.C.

2010-10-15T23:59:59.000Z

159

ITER Test Blanket Module Error Field Simulation Experiments at DIII-D (A26868)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper ITR/1-323rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617675

Schaffer, M.J.

2010-10-14T23:59:59.000Z

160

CW Operation of Corrugated Waveguide Transmission Lines for ITER ECH and CD System (A25793)  

E-Print Network (OSTI)

Proc. Of The 5th IAEA Technical Committee Meeting On Steady-State Operation Of Magnetic Fusion Devices, Daejeon, Dominican Republic Of Korea, 2007, To Be Published In The Proceedings5th IAEA Technical Committee Meeting on Steady State Operation of Magnetic Fusion Devices Daejeon, KP, 2007999613680

Olstad, R.A.

2007-05-08T23:59:59.000Z

Note: This page contains sample records for the topic "gg mace kp" 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

Forward osmosis treatment of drilling mud and fracturing wastewater from oil and gas operations  

E-Print Network (OSTI)

with different objectives (Plan-Neofluar 10?/0.30, Plan-Neofluar 40?/ 1.30 Oil, and Plan-Apochromat 63?/1.40 Oil-W, Burgath K-P, Oberthu¨r T, Tarkian M, Pfeiffer T. 2000. Unconventional PGE occurrences and PGE

162

ELM Control by Resonant Magnetic Perturbations - Overview of Research by the PEP ITPA Group (A26859)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper ITR/P1-3023rd IAEA Fusion Energy Conference Daejeon, KP, 2010999618075

Fenstermacher, M.E.

2010-09-16T23:59:59.000Z

163

Particle Control and Transport Experiments in the DIII-D Tokamak With Graphite Walls (A26897)  

E-Print Network (OSTI)

Proceedings Of 23rd IAEA Fusion Energy Conference, October 11-16, 2010, Daejeon, Republic Of Korea, Http://www-pub.iaea.org/mtcd/meetings/cn180_papers.asp, Paper EXD/6-423rd IAEA Fusion Energy Conference Daejeon, KP, 2010999617685

Allen, S.L.

2010-10-22T23:59:59.000Z

164

THEJOURNALOF BIOLOGICALCHEMISTRY (01991by The American Society for Biochemistry andMolecular Biology, Inc.  

E-Print Network (OSTI)

.Alton Jones Cell Science Center, Lake Placid, New York 12946 The role of the cytoplasmic loops and C by UnitedStatesPublicHealth Service Grants EY08061 (to K.P.), EY 06603 (to J. W. C.), and DK 38639 (to J. W-370 Wroclaw, Poland. 'The abbreviations usedare: Rho, rhodopsin; BTP, 1,3- his[tris(hydroxylmethyl)methylamine]propane

Palczewski, Krzysztof

165

ARM - News from the Steamboat Springs Deployment  

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

ColoradoNews from the Steamboat Springs Deployment Steamboat Deployment AMF Home Steamboat Springs Home Storm Peak Lab Data Plots and Baseline Instruments Data Sets Experiment Planning STORMVEX Proposal Abstract and Related Campaigns Science Plan NWS Forecasting Plots STORMVEX Website Outreach STORMVEX Backgrounder (PDF, 1.6MB) News AMF2 STORMVEX Blog Images Contacts Gerald Mace News from the Steamboat Springs Deployment Releases WPSD (Paducah, KY) "STORMVEX Cloud Study" January 19, 2011 The Daily Sentinel, Grand Junction "Steamboat project gives scientists unique, grounded look at clouds" December 12, 2010 Steamboat Pilot & Today "Steamboat cloud study to help create better global climate models" Image Gallery December 12, 2010 Also picked up by:

166

Mountain Association for Community Economic Development - Solar Water  

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

Mountain Association for Community Economic Development - Solar Mountain Association for Community Economic Development - Solar Water Heater Loan Program Mountain Association for Community Economic Development - Solar Water Heater Loan Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Solar Water Heating Program Info Funding Source Kentucky Solar Partnership (KSP) State Kentucky Program Type Local Loan Program Rebate Amount 100% of equipment and installation cost Provider Kentucky Solar Partnership The Kentucky Solar Partnership (KSP) and the Mountain Association for Community Economic Development (MACED) partner to offer low interest loans for the installation of solar water heaters. Loans cover the full equipment and installation cost. Flexible rate loans and terms are available. They

167

Electron 83 Rb / 83m Kr Source for the Energy Scale Monitoring in the KATRIN Experiment  

Science Conference Proceedings (OSTI)

The KATRIN (KArlsruhe TRItium Neutrino) experiment investigates the endpoint region of the tritium ??spectrum aiming for the sensitivity on the neutrino mass of 0.2 eV (90% C.L.). A spectrometer of the MAC?E filter (Magnetic Adiabatic Collimation with an Electrostatic filter) type will be used for a total time of at least 5 years. An unrecognized shift of the filtering potential would directly influence the resulting neutrino mass. To continuously monitor the filtering potential the high voltage (HV) will be simultaneously applied to an additional MAC?E filter spectrometer. In this monitor spectrometer suitable electron sources based on atomic/nuclear standards will be utilized. As one of such monitoring tools the solid 83 Rb / 83m Kr source is intended. It provides conversion electrons from 83m Kr (t 1/2 ?=?1.83? h ) which is continuously generated by 83 Rb (t 1/2 ?86? d ). The Calibration and Monitoring task of the KATRIN project demands the long?term energy stability ?E/E of the K?32 conversion electron line (E?=?17.8? keV ???=?2.7? eV ) of 1.6? ppm / month .

Miroslav Zbo?il; The KATRIN collaboration

2011-01-01T23:59:59.000Z

168

doi:10.1155/2012/372371 Clinical Study The Avantgarde Carbostent in Patients Scheduled for  

E-Print Network (OSTI)

Copyright 2012 Carlo Briguori et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Background. Treatment of patients who need coronary revascularization before undelayable non-cardiac surgery is challenging. Methods. We assessed the safety and efficacy of percutaneous coronary interventions (PCI) using the Avantgarde TM Carbostent (CID, Italy) in patients undergoing PCI before undelayable non-cardiac surgery. The Multiplate analyzer point-of-care was used to assess residual platelet reactivity. One major cardiac events (MACE, defined as death, myocardial infarction, and stent thrombosis and major bleeding) were assessed. Results. 42 consecutive patients were analyzed. Total stent length ?25 mm was observed in 16 (37%) patients. Multivessel stenting was performed in 11 (31.5%) patients. Clopidogrel was interrupted 5 days before surgery in 35 patients, whereas it was stopped the day of the surgery in 7 patients. Surgery was performed after 27 9 (742) days from PCI. MACE occurred in one patient (2.4%; 95 % confidence interval: 0.0113%), who had fatal acute myocardial infarction 3 days after abdominal aortic aneurysm surgery and 12 days after stent implantation. No case of major bleeding in the postoperative phase was observed. Conclusions. The present pilot study suggests that, although at least 1014 days of dual antiplatelet therapy remain mandatory, the Avantgarde TM stent seems to have a role in patients requiring undelayable surgery. 1.

Undelayable Noncardiac Surgery; Carlo Briguori; Gabriella Visconti; Francesca De Micco; Amelia Focaccio

2011-01-01T23:59:59.000Z

169

Pseudoscalar boson and standard model-like Higgs boson productions at the LHC in the simplest little Higgs model  

SciTech Connect

In the framework of the simplest little Higgs model, we perform a comprehensive study for the pair productions of the pseudoscalar boson {eta} and standard model-like Higgs boson h at LHC, namely gg(bb){yields}{eta}{eta}, gg(qq){yields}{eta}h, and gg(bb){yields}hh. These production processes provide a way to probe the couplings between Higgs bosons. We find that the cross section of gg{yields}{eta}{eta} always dominates over that of bb{yields}{eta}{eta}. When the Higgs boson h which mediates these two processes is on-shell, their cross sections can reach several thousand fb and several hundred fb, respectively. When the intermediate state h is off-shell, those two cross sections are reduced by 2 orders of magnitude, respectively. The cross sections of gg{yields}{eta}h and qq{yields}{eta}h are about in the same order of magnitude, which can reach O(10{sup 2} fb) for a light {eta} boson. Besides, compared with the standard model prediction, the cross section of a pair of standard model-like Higgs bosons production at LHC can be enhanced sizably. Finally, we briefly discuss the observable signatures of {eta}{eta}, {eta}h, and hh at the LHC.

Wang Lei; Han Xiaofang [Department of Physics, Yantai University, Yantai 264005 (China)

2010-11-01T23:59:59.000Z

170

Mining the SDSS archive. I. Photometric redshifts in the nearby universe  

E-Print Network (OSTI)

We present a supervised neural network approach to the determination of photometric redshifts. The method was tuned to match the characteristics of the Sloan Digital Sky Survey and it exploits the spectroscopic redshifts provided by this unique survey. In order to train, validate and test the networks we used two galaxy samples drawn from the SDSS spectroscopic dataset: the general galaxy sample (GG) and the luminous red galaxies subsample (LRG). The method consists of a two steps approach. In the first step, objects are classified in nearby (ztrained on objects belonging to the two redshift ranges. Using a standard MLP operated in a Bayesian framework, the optimal architectures were found to require 1 hidden layer of 24 (24) and 24 (25) neurons for the GG (LRG) sample. The presence of systematic deviations was then corrected by interpolating the resulting redshifts. The final results on the GG dataset give a r...

Raffaele, D A; Giuseppe, L; Massimo, B; Maurizio, P; Elisabetta, D F; Roberto, T; Antonino, Staiano; Giuseppe, Longo; Massimo, Brescia; Maurizio, Paolillo; Elisabetta, De Filippis; Roberto, Tagliaferri

2007-01-01T23:59:59.000Z

171

Lectures on 2d Gauge Theories: Topological Aspects and Path Integral Techniques  

E-Print Network (OSTI)

These are lecture notes of lectures presented at the 1993 Trieste Summer School, dealing with two classes of two-dimensional field theories, (topological) Yang-Mills theory and the G/G gauged WZW model. The aim of these lectures is to exhibit and extract the topological information contained in these theories, and to present a technique (a Weyl integral formula for path integrals) which allows one to calculate directly their partition function and topological correlation functions on arbitrary closed surfaces. Topics dealt with are (among others): solution of Yang-Mills theory on arbitrary surfaces; calculation of intersection numbers of moduli spaces of flat connections; coupling of Yang-Mills theory to coadjoint orbits and intersection numbers of moduli spaces of parabolic bundles; derivation of the Verlinde formula from the G/G model; derivation of the shift k to k+h in the G/G model via the index of the twisted Dolbeault complex.

Matthias Blau; George Thompson

1993-10-21T23:59:59.000Z

172

A study of the rectifying behaviour of aniline green-based Schottky diode  

Science Conference Proceedings (OSTI)

An Al/aniline green (AG)/Ga"2Te"3 device was fabricated and the current-voltage (I-V), capacitance-voltage (C-V) and capacitance-frequency (C-f) characteristics of the device have been investigated at room temperature. The values of the ideality factor, ... Keywords: 71.20.Nr, 73.40.Ei, 73.40.Kp, 73.40.Sx, Aniline green, Ideality factor, Organic semiconductor, Schottky barrier

?. Aydo?an; . Gll

2010-02-01T23:59:59.000Z

173

Solutions of Jimbo-Miwa Equation and Konopelchenko-Dubrovsky Equations  

Science Conference Proceedings (OSTI)

The Jimbo-Miwa equation is the second equation in the well known KP hierarchy of integrable systems, which is used to describe certain interesting (3+1)-dimensional waves in physics but not pass any of the conventional integrability tests. The Konopelchenko-Dubrovsky ... Keywords: 35C10, 35C15, 35Q51, Jimbo-Miwa, Konopelchenko-Dubrovsky, Logarithmic stable-range, Stable-range

Bintao Cao

2010-11-01T23:59:59.000Z

174

Elevated weathering rates in the Rocky Mountains during the Early Eocene  

E-Print Network (OSTI)

primarily of trona (NaHCO3·Na2CO3·2H2O) and halite (NaCl) and were mapped from over 200 exploratory Tuff 10 m Qm F L Bedrock Alluvium KP Qm Bedrock Alluvium Trona bed Union Pacific El Paso core WPM) Trona volume (km3) 0 2 4 6 Derived from Phanerozoic strata Figure 2 Early Eocene strata in the GGRB. a

Smith, Michael Elliot

175

An Ecient Input Method for Visual Programming Systems Jiro TANAKA  

E-Print Network (OSTI)

University of Tsukuba GHC Tcl/Tk 1 (Visual Language) 2 GHC [Ueda85] y1 3 ( 1) |1| #12;Buttons Predicate Name select select select select select select 4 Tcl/Tk [Ousterhout94] Tcl f f g f gg f f g f gg 2 #12;1 2 3 4 56 2 append(A,B,:,C):- A=[X|A1]; append(A1,B,:,C1), [X|C1]=C. Tcl {{append/0/1 {A/0/1 B/0/2} C/0

Tanaka, Jiro

176

Heavy-quark production at large rapidities at hadron colliders.  

E-Print Network (OSTI)

to those partonic subprocesses that feature a gluon exchange in the t-channel; this happens for gg ? QQg and qg ? QQq, and it is peculiar to the NLO computations of quark pair production, as opposed to Born-level predictions, in which only fermions... -energy limit is QQ+1 jet production. In this case the partonic subprocesses gg ? QQg and qg ? QQq, which feature a gluon exchange in the t-channel, are O(?3S) at the Born level. This can also be considered as a reformulation of the standard Mueller...

Andersen, Jeppe R; Del Duca, Vittoria; Frixione, Stefano; Maltoni, Fabio; Stirling, W James

177

OECD MCCI 2-D Core Concrete Interaction (CCI) tests : CCI-2 test data report-thermalhydraulic results, Rev. 0 October 15, 2004.  

Science Conference Proceedings (OSTI)

The Melt Attack and Coolability Experiments (MACE) program addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. As a follow-on program to MACE, The Melt Coolability and Concrete Interaction Experiments (MCCI) project is conducting reactor material experiments and associated analysis to achieve the following objectives: (1) resolve the ex-vessel debris coolability issue through a program that focuses on providing both confirmatory evidence and test data for the coolability mechanisms identified in MACE integral effects tests, and (2) address remaining uncertainties related to long-term two-dimensional molten core-concrete interactions under both wet and dry cavity conditions. Achievement of these two program objectives will demonstrate the efficacy of severe accident management guidelines for existing plants, and provide the technical basis for better containment designs for future plants. In terms of satisfying these objectives, the Management Board (MB) approved the conduct of two long-term 2-D Core-Concrete Interaction (CCI) experiments designed to provide information in several areas, including: (i) lateral vs. axial power split during dry core-concrete interaction, (ii) integral debris coolability data following late phase flooding, and (iii) data regarding the nature and extent of the cooling transient following breach of the crust formed at the melt-water interface. This data report provides thermal hydraulic test results from the CCI-2 experiment, which was conducted on August 24, 2004. Test specifications for CCI-2 are provided in Table 1-1. This experiment investigated the interaction of a fully oxidized 400 kg PWR core melt, initially containing 8 wt % Limestone/Common Sand (LCS) concrete, with a specially designed two-dimensional LCS concrete test section with an initial cross-sectional area of 50 cm x 50 cm. The report begins by providing a summary description of the CCI-2 test apparatus and operating procedures, followed by presentation of the thermal-hydraulic results. Detailed posttest debris examination results will be provided in a subsequent publication. Observations drawn within this report regarding the overall cavity erosion behavior may be subject to revision once the posttest examinations are completed, since these examinations will fully reveal the final cavity shape.

Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

178

OECD MCCI project long-term 2-D molten core concrete interaction test design report, Rev. 0. September 30, 2002.  

Science Conference Proceedings (OSTI)

The Melt Attack and Coolability Experiments (MACE) program at Argonne National Laboratory addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. As a follow-on program to MACE, The Melt Coolability and Concrete Interaction Experiments (MCCI) project is conducting reactor material experiments and associated analysis to achieve the following two technical objectives: (1) resolve the ex-vessel debris coolability issue through a program that focuses on providing both confirmatory evidence and test data for the coolability mechanisms identified in MACE integral effects tests, and (2) address remaining uncertainties related to long-term two-dimensional molten core-concrete interactions under both wet and dry cavity conditions. Achievement of these two objectives will demonstrate the efficacy of severe accident management guidelines for existing plants, and provide the technical basis for better containment designs for future plants. In terms of the first program objective, the Small-Scale Water Ingression and Crust Strength (SSWICS) test series has been initiated to provide fundamental information on the ability of water to ingress into cracks and fissures that form in the debris during quench, thereby augmenting the otherwise conduction-limited heat transfer process. A test plan for Melt Eruption Separate Effects Tests (MESET) has also been developed to provide information on the extent of crust growth and melt eruptions as a function of gas sparging rate under well-controlled experiment conditions. In terms of the second program objective, the project Management Board (MB) has approved startup activities required to carry out experiments to address remaining uncertainties related to long-term two-dimensional molten core-concrete interaction. In particular, for both wet and dry cavity conditions, there is uncertainty insofar as evaluating the lateral vs. axial power split during a core-concrete interaction due to a lack of experiment data. As a result, there are differences in the 2-D cavity erosion predicted by codes such as MELCOR, WECHSL, and COSACO. The first step towards generating this data is to produce a test plan for review by the Project Review Group (PRG). The purpose of this document is to provide this plan.

Farmer, M. T.; Kilsdonk, D. J.; Lomperski, S.; Aeschliman, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

179

OECD 2-D Core Concrete Interaction (CCI) tests : CCI-2 test plan, Rev. 0 January 31, 2004.  

Science Conference Proceedings (OSTI)

The Melt Attack and Coolability Experiments (MACE) program addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. As a follow-on program to MACE, The Melt Coolability and Concrete Interaction Experiments (MCCI) project is conducting reactor material experiments and associated analysis to achieve the following objectives: (1) resolve the ex-vessel debris coolability issue through a program that focuses on providing both confirmatory evidence and test data for the coolability mechanisms identified in MACE integral effects tests, and (2) address remaining uncertainties related to long-term two-dimensional molten core-concrete interactions under both wet and dry cavity conditions. Achievement of these two program objectives will demonstrate the efficacy of severe accident management guidelines for existing plants, and provide the technical basis for better containment designs for future plants. In terms of satisfying these objectives, the Management Board (MB) approved the conduct of two long-term 2-D Core-Concrete Interaction (CCI) experiments designed to provide information in several areas, including: (i) lateral vs. axial power split during dry core-concrete interaction, (ii) integral debris coolability data following late phase flooding, and (iii) data regarding the nature and extent of the cooling transient following breach of the crust formed at the melt-water interface. The first of these two tests, CCI-1, was conducted on December 19, 2003. This test investigated the interaction of a fully oxidized 400 kg PWR core melt, initially containing 8 wt % calcined siliceous concrete, with a specially designed two-dimensional siliceous concrete test section with an initial cross-sectional area of 50 cm x 50 cm. The second of these two planned tests, CCI-2, will be conducted with a nearly identical test facility and experiment boundary conditions, but with a Limestone/Common Sand (LCS) concrete test section to investigate the effect of concrete type on the two-dimensional core-concrete interaction and debris cooling behavior. The objective of this report is to provide the overall test plan for CCI-2 to enable pretest calculations to be carried out. The report begins by providing a summary description of the CCI-2 test apparatus, followed by a description of the planned test operating procedure. Overall specifications for CCI-2 are provided in Table 1-1.

Farmer, M. T.; Kilsdonk, D. J.; Lomperski, S.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division)

2011-05-23T23:59:59.000Z

180

OECD MMCI 2-D Core Concrete Interaction (CCI) tests : CCCI-1 test data report-thermalhydraulic results. Rev 0 January 31, 2004.  

SciTech Connect

The Melt Attack and Coolability Experiments (MACE) program addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. As a follow-on program to MACE, The Melt Coolability and Concrete Interaction Experiments (MCCI) project is conducting reactor material experiments and associated analysis to achieve the following objectives: (1) resolve the ex-vessel debris coolability issue through a program that focuses on providing both confirmatory evidence and test data for the coolability mechanisms identified in MACE integral effects tests, and (2) address remaining uncertainties related to long-term two-dimensional molten coreconcrete interactions under both wet and dry cavity conditions. Achievement of these two program objectives will demonstrate the efficacy of severe accident management guidelines for existing plants, and provide the technical basis for better containment designs for future plants. In terms of satisfying these objectives, the Management Board (MB) approved the conduct of two long-term 2-D Core-Concrete Interaction (CCI) experiments designed to provide information in several areas, including: (i) lateral vs. axial power split during dry core-concrete interaction, (ii) integral debris coolability data following late phase flooding, and (iii) data regarding the nature and extent of the cooling transient following breach of the crust formed at the melt-water interface. This data report provides thermal hydraulic test results from the CCI-1 experiment, which was conducted on December 19, 2003. Test specifications for CCI-1 are provided in Table 1-1. This experiment investigated the interaction of a fully oxidized 400 kg PWR core melt, initially containing 8 wt % calcined siliceous concrete, with a specially designed two-dimensional siliceous concrete test section with an initial cross-sectional area of 50 cm x 50 cm. The report begins by providing a summary description of the CCI-1 test apparatus and operating procedures, followed by presentation of the thermal-hydraulic results. The posttest debris examination results will be provided in a subsequent publication. Observations drawn within this report regarding the overall cavity erosion behavior may be subject to revision once the posttest examinations are completed, since these examinations will fully reveal the final cavity shape.

Farmer, M. T.; Lomperski, S.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division)

2011-05-23T23:59:59.000Z

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181

OECD MCCI project 2-D Core Concrete Interaction (CCI) tests : CCI-3 test data report-thermalhydraulic results. Rev. 0 October 15, 2005.  

SciTech Connect

The Melt Attack and Coolability Experiments (MACE) program addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. As a follow-on program to MACE, The Melt Coolability and Concrete Interaction Experiments (MCCI) project is conducting reactor material experiments and associated analysis to achieve the following objectives: (1) resolve the ex-vessel debris coolability issue through a program that focuses on providing both confirmatory evidence and test data for the coolability mechanisms identified in MACE integral effects tests, and (2) address remaining uncertainties related to long-term two-dimensional molten core-concrete interactions under both wet and dry cavity conditions. Achievement of these two program objectives will demonstrate the efficacy of severe accident management guidelines for existing plants, and provide the technical basis for better containment designs for future plants. In terms of satisfying these objectives, the Management Board (MB) approved the conduct of a third long-term 2-D Core-Concrete Interaction (CCI) experiment designed to provide information in several areas, including: (i) lateral vs. axial power split during dry core-concrete interaction, (ii) integral debris coolability data following late phase flooding, and (iii) data regarding the nature and extent of the cooling transient following breach of the crust formed at the melt-water interface. This data report provides thermal hydraulic test results from the CCI-3 experiment, which was conducted on September 22, 2005. Test specifications for CCI-3 are provided in Table 1-1. This experiment investigated the interaction of a fully oxidized 375 kg PWR core melt, initially containing 15 wt% siliceous concrete, with a specially designed two-dimensional siliceous concrete test section with an initial cross-sectional area of 50 cm x 50 cm. The sand and aggregate constituents for this particular siliceous concrete were provided by CEA as an in-kind contribution to the program. The report begins by providing a summary description of the CCI-3 test apparatus and operating procedures, followed by presentation of the thermal-hydraulic results. Detailed posttest debris examination results will be provided in a subsequent publication. Observations drawn within this report regarding the overall cavity erosion behavior may be subject to revision once the posttest examinations are completed, since these examinations will fully reveal the final cavity shape.

Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

182

Slide 1  

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

Cloud Properties and Heating Cloud Properties and Heating Rates in Tropical Cloud Systems Jennifer Comstock and Sally McFarlane Pacific Northwest National Laboratory Alain Protat Centre for Australian Weather and Climate Research Motivation Cloud properties retrievals Cloud process understanding Cloud Radiative forcing and heating rates Model evaluation on many scales (LES, CRM, SCM...) Quantified uncertainties are needed... 2 Retrieval Algorithm Evaluation within CPWG Past intercomparisons CLOWD - Clouds with Low Optical Water Depths (Turner et al. 2007) Ice Clouds - (Comstock et al. 2007) One retrieval does not fit all Present algorithm evaluation BBHRP Ice Cloud Retrievals at SGP - Microbase (Dunn, Jensen, Mace, Marchand) Arctic mixed phase clouds - BBHRP (Shupe, Turner) CLOWD - BBHRP Pt. Reyes AMF deployment

183

Research Highlight  

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

ARM Measurements Validate New Satellite Multilayer Cloud Remote Sensing ARM Measurements Validate New Satellite Multilayer Cloud Remote Sensing Method Submitter: Minnis, P., NASA - Langley Research Center Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Properties Journal Reference: Huang, J., P. Minnis, B. Lin, Y. Yi, T.-F. Fan, S. Sun-Mack, and J. K. Ayers, 2006: Determination of ice water path in ice-over-water cloud systems using combined MODIS and AMSR-E measurements. Geophys. Res. Lett., 33, L21801, 10.1029/2006GL027038. Minnis, P., J. Huang, B. Lin, Y. Yi, R. F. Arduini, T.-F. Fan, J. K. Ayers, and G. G. Mace, 2007: Ice cloud properties in ice-over-water cloud systems using TRMM VIRS and TMI data. J. Geophys. Res., 112, D06206, doi:10.1029/2006JD007626. Figure 1. Comparison of the VISST and MCRS retrievals with simultaneous

184

Section 9  

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

Figure 1. Monthly mean values of clear-sky irradiance (solid), observed irradiance (long dash), and surface cloud forcing (short dash) at the ARM SGP site. A Two-Year Climatology of Radiation Budget and Cloud Properties for the ARM SGP Site T. P. Ackerman and S. G. Strum Department of Meteorology, Pennsylvania State University University Park, Pennsylvania G. G. Mace Department of Meteorology, University of Utah Salt Lake City, Utah C. N. Long NOAA/ERL/Surface Radiation Research Branch Boulder, Colorado Introduction One of primary reasons for the establishment of the ARM Southern Great Plains research site was to obtain long-term records of surface radiation data and the impact of clouds on these data (Stokes and Schwartz 1994). This research project focuses on the creation of a two-year climatology of the sur-

185

Section 68  

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

An Evaluation of Cirrus Parameterizations Using Southern An Evaluation of Cirrus Parameterizations Using Southern Great Plains Data D. A. Sovchik, G. C. Mace, and T. P. Ackerman Department of Meteorology The Pennsylvania State University University Park, Pennsylvania Parameterization of cirrus in large-scale models is a challeng- considerably. A detailed analysis of the resulting distributions ing problem for a number of reasons. Among the most has not yet been carried out, but will be used to identify important of these has been the lack of quantifiable tests of systematic variations. parameterization results. However, the necessary testing can now be carried out using the data stream from the Atmos- The radiative parameterization developed by Ebert and Curry pheric Radiation Measurement Program (ARM) Southern

186

Research Highlight  

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

The Vertical Structure of Cloud Radiative Forcing at the ACRF SGP Revealed The Vertical Structure of Cloud Radiative Forcing at the ACRF SGP Revealed by 8 Years of Continuous Measurements Submitter: Mace, G., Utah State University Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Modeling, Cloud Properties Journal Reference: Accepted to Journal of Climate, 2007. Figure 1. Cloud occurrence, coverage, radiative forcing, and radiation effects over a composite annual cycle that is derived by averaging all observations collected during a particular month for all years. a) cloud occurrence in 100 mb vertical bins, b) cloud coverage, c) infrared cloud radiative forcing in 100 mb vertical bins, d) solar cloud radiative forcing, e) net cloud radiative forcing, f,g,h) solar (dotted), IR (solid), and net (dashed) cloud radiative effect for TOA (f), atmosphere (g), and

187

AMF Deployment, Steamboat Springs, Colorado  

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

Colorado Colorado Steamboat Deployment AMF Home Steamboat Springs Home Storm Peak Lab Data Plots and Baseline Instruments Data Sets Experiment Planning STORMVEX Proposal Abstract and Related Campaigns Science Plan NWS Forecasting Plots STORMVEX Website Outreach STORMVEX Backgrounder (PDF, 1.6MB) News AMF2 STORMVEX Blog Images Contacts Gerald Mace AMF Deployment, Steamboat Springs, Colorado This view shows the instrument locations for the STORMVEX campaign. At the westernmost site is the Valley Floor. Heading east up the mountain is Christy Peak, Thunderhead, and Storm Peak Laboratory at the far east. Valley Floor: 40° 39' 43.92" N, 106° 49' 0.84" W Thunderhead: 40° 39' 15.12" N, 106° 46' 23.16" W Storm Peak: 40° 27' 18.36" N, 106° 44' 40.20" W

188

Microsoft Word - SPARTICUS_Science_Plan_DOE-SC-ARM-1001.doc  

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3 3 SPARTICUS: Small Particles in Cirrus Science and Operations Plan J Mace Principal Investigator E Jensen D Mitchell G McFarquhar X Liu J Comstock T Garrett T Ackerman October 2009 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not

189

ARM - Publications: Science Team Meeting Documents  

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A Tale of Two Cirrus A Tale of Two Cirrus Poellot, M.R.(a), Mace, G.G.(b), and Arnott, W.P. (c), University of North Dakota (a), University of Utah (b), Desert Research Institute (c) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting On May 8, 1998, an orographically-forced cirrus layer overspread the DOE ARM Program's Southern Great Plains site and subsequently became mixed with anvil outflow from thunderstorms. These clouds were sampled in situ by the University of North Dakota Citation aircraft and remotely by an array of ground-based radar, lidar and radiometric instrumentation. The first of two aircraft flights sampled the orographic cirrus through a series of step climbs and spirals. During that time, the cloud was relatively uniform in depth and structure. Shortly after the start of the second flight, the

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Cirrus Radiative Properties in the Tropical Western Pacific Cirrus Radiative Properties in the Tropical Western Pacific J. M. Comstock and T. P. Ackerman Pacific Northwest National Laboratory Richland, Washington G. G. Mace University of Utah Salt Lake City, Utah Introduction Cirrus clouds in tropical regions are often located high in the cold upper troposphere and have low optical depths. In addition, tropical cirrus often extend in large sheets up to 1000 km horizontally, which may have a large influence on the energy budget of the atmosphere. Characterizing the location and radiative properties of cirrus clouds is an important step in understanding the processes that generate and maintain these cold, thin cirrus clouds and their impact on upper tropospheric dynamics. In this paper, we present cirrus radiative properties derived using a combination of Micropulse Lidar

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X:\ARM_19~1\P185-192.WPD  

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Figure 1. Schematic diagram of an operational Figure 1. Schematic diagram of an operational methodology for cloud parameterization testing. The upper portion depicts the data analysis procedure, while the lower portion depicts parameterization forcing and evaluation. A Comparison of Radiometric Fluxes Influenced by Parameterized Cirrus Clouds with Observed Fluxes at the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) Site G. G. Mace, T. P. Ackerman, and A. T. George Penn State University, Department of Meteorology University Park, Pennsylvania As the data stream from the ARM Southern Great Plains on an hourly basis from the National Meteorological (SGP) site matures, the value of this resource is becoming Center. The MAPS profiles serve as input to a radiative more readily apparent. For the first time, research on the

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Horizontal and Vertical Profiles of In-Situ Cloud Horizontal and Vertical Profiles of In-Situ Cloud Properties Measured During Tropical Warm Pool International Cloud Experiment G. McFarquhar, M. Freer, and J. Um University of Illinois at Urbana-Champaign Urbana, Illinois G. Kok Droplet Measurement Technologies Boulder, Colorado R. McCoy and T. Tooman Sandia National Laboratories Livermore, California J. Mace University of Utah Salt Lake City, Utah Introduction In-situ measurements of ice particle sizes, shapes and numbers were made in fresh anvils, aging anvils and in generic cirrus during TWP-ICE. The vertical profiles and horizontal profiles performed by the Scaled Composites Proteus aircraft were made on 7 different days as illustrated in Table 1. Table 1. Summary of flights conducted during TWP-ICE; *designates that spiral was conducted over Darwin,

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X:\ARM_19~1\P283-315.WPD  

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Figure 1. Observations of water vapor mixing ratio profiles by the GSFC Scanning Raman Lidar on Figure 1. Observations of water vapor mixing ratio profiles by the GSFC Scanning Raman Lidar on 15 April during the 1994 ARM RCS IOP. Observations of a Cold Front With Strong Vertical Undulations During the ARM RCS-IOP D. O'C. Starr and D. N. Whiteman G. Mace National Aeronautics and Space Administration The Pennsylvania State University Goddard Space Flight Center University Park, Pennsylvania Greenbelt, Maryland S. H. Melfi University of Utah University of Maryland-Baltimore County Salt Lake City, Utah Baltimore, Maryland A. R. Lare Sandia National Laboratories Applied Research Livermore, California Landover, Maryland R. A. Ferrare, B. Demoz, and K. D. Evans Hughes STX Lanham, Maryland K. Sassen S. E. Bisson and J.E.M. Goldsmith Passage of a cold front was observed on the night of

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ARM - Publications: Science Team Meeting Documents  

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The Association of the Cirrus Properties Over the Western Tropical Pacific The Association of the Cirrus Properties Over the Western Tropical Pacific with Tropical Deep Convection Deng, M.(a), Mace, G.G.(a), and Soden, B.J.(b), Univesity of Utah (a), Geophysical Fluid Dynamics Laboratory (b) The microphysical and radiative properties of upper tropospheric clouds in the tropics are known to have a substantial influence on climate. Observations from long term cloud radar measurements in the tropics show that upper tropospheric clouds are observed above 10 km as much as 40% of the time depending on location. By combining satellite observations with observations from the tropical ARM site on Nauru and Manus Islands we examine the macro and microphysical properties of these clouds in terms of their association with deep convection. The fundamental questions we will

195

ARM - Field Campaign - Spring Cloud IOP  

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govCampaignsSpring Cloud IOP govCampaignsSpring Cloud IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Spring Cloud IOP 2000.03.01 - 2000.03.26 Lead Scientist : Gerald Mace For data sets, see below. Summary The Atmospheric Radiation Measurement (ARM) Program conducted a Cloud Intensive Operational Period (IOP) in March 2000 that was the first-ever effort to document the 3-dimensional cloud field from observational data. Prior numerical studies of solar radiation propagation through the atmosphere in the presence of clouds have been limited by the necessity to use theoretical representations of clouds. Three-dimensional representations of actual clouds and their microphysical properties, such as the distribution of ice and water, had previously not been possible

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ARM - Feature Stories and Releases Article  

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23, 2008 [Feature Stories and Releases] 23, 2008 [Feature Stories and Releases] Field Campaigns for 2010 Range from the Arctic to the Azores Bookmark and Share With the recent awards, the ARM Mobile Facility deployment on Graciosa Island in the Azores is extended from its original 9-month duration, beginning in May 2009 and now lasting through November 2010. With the recent awards, the ARM Mobile Facility deployment on Graciosa Island in the Azores is extended from its original 9-month duration, beginning in May 2009 and now lasting through November 2010. The Department of Energy recently announced the selection of major ARM field campaigns that will take place in 2010. Studies led by principal investigators Rob Wood, Hans Verlinde, and Jay Mace will examine marine, mixed-phase, and cirrus clouds in the Azores, Alaska, the Great Plains, and

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ARM - Publications: Science Team Meeting Documents  

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3D Delta-Diffusion and IR Monte-Carlo Methods for Radiative Transfer 3D Delta-Diffusion and IR Monte-Carlo Methods for Radiative Transfer Applied to Inhomogeneous Cirrus over the ARM-SGP Site Chen, Y.(a), Liou, K.N.(a), Gu, Y.(a), Ou, S.C.(a), and Mace, G.G.(b), University of California, Los Angeles (a), University of Utah (b) Fourteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting An efficient method based on a full multigrid approach has been developed to solve the 3D delta-diffusion radiative transfer equation, which utilizes four-term spherical harmonics expansion for the phase function and intensity. This method first solves the inhomogeneous partial differential equation on a number of coarse grids and subsequently performs interpolation to predivided fine grids to speed up the convergence of the solution, particularly useful for cloud radiation parameterization in

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ARM - Publications: Science Team Meeting Documents  

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The MERGED_SOUNDING VAP: A Status Report and Description The MERGED_SOUNDING VAP: A Status Report and Description Miller, M.A.(a), Troyan, D.T.(a), and Mace, G.G.(b), Brookhaven National Laboratory (a), University of Utah (b) The Value-added Product (VAP) known as MERGED_SOUNDING has been deemed a very desirous component of ARMs suite of VAPs. To have a thermodynamics profile of the atmosphere at one-minute temporal intervals and uniform height levels available for ARM data users eliminates much redundancy and inconsistency as investigators will now have standard atmospheric profiles at their disposal. The values which constitute the thermodynamics profile include: Temperature, Relative Humidity, Vapor Pressure, Barometric Pressure, Wind Speed and Direction, and Dewpoint. The data integrated to form the MERGED_SOUNDING data stream comes from radiosonde launches, model

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Cirrus Horizontal Inhomogeneity and OLR Bias Cirrus Horizontal Inhomogeneity and OLR Bias Q. Fu and B. Carlin Department of Oceanography Dalhousie University Halifax, Nova Scotia Canada G. G. Mace Department of Meteorology University of Utah Salt Lake City, Utah Introduction Clouds exhibit dramatic variabilities at spatial scales smaller than typical grid cells of large-scale models used to study climate and weather. These unresolved cloud fluctuations are potentially important for parameterizations of both cloud radiative effects and cloud microphysical processes (e.g., Harshvardhan and Randall 1985; Jacob and Kein 1999). It is now well accepted that neglect of cloud subscale variability can seriously bias model estimates of the disposition of solar radiation in the earth- atmosphere system (e.g., Cahalan et al. 1994a; Barker 1996).

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ARM - Publications: Science Team Meeting Documents: MICROBASE, A Continuous  

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MICROBASE, A Continuous Baseline Microphysical Retrieval: Status and Future MICROBASE, A Continuous Baseline Microphysical Retrieval: Status and Future Plans Miller, Mark Brookhaven National Laboratory Johnson, Karen Brookhaven National Laboratory Michael, Paul Brookhaven National Laboratory Mace, Gerald University of Utah The MICROBASE_PI and MICROBASE_PA value-added products (VAPs) are integral components of the Broadband Heating Rate Profile (BBHRP) project of the Atmospheric Radiation Measurement (ARM) Program. The goal of the BBHRP project is to determine atmospheric heating and cooling rate profiles in the column above the active sensors at each ARM Climate Research Facility (ACRF) sites and within a larger volume around each site, representative of a global climate model grid cell. To produce the heating rate profiles,

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201

ARM - Publications: Science Team Meeting Documents  

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Cirrus Cloud Particle Mass and Terminal Velocity Derived from Airborne 2D-C Cirrus Cloud Particle Mass and Terminal Velocity Derived from Airborne 2D-C Probe and Counterflow Virtural Impactor Data for Selected Cases During the Spring 2000 Cloud IOP Benson-Troth, S.(a), Mace, G.G.(a), Twohy, C.(b), and Poellot, M.(c), University of Utah (a), Oregon State University (b), University of North Dakota (c) Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting When cirrus cloud particles are sampled by an airborne 2D-C probe, the shadows of the particles on the diode array are preserved. Analysis of the raw 2D-C data provides a size distribution and number concentration of the cloud particles sampled. The airborne counterflow virtural impactor provides the ice water content of the sampled cloud particles. Using the size distribution and the ice water content, we derive the coefficient and

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Office of Legacy Management (LM)

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X:\ARM_19~1\P155-184.WPD  

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Diffuse Diffuse ratio (diffuse)/(diffuse direct) Session Papers 173 (1) A Simple Formula for Determining Globally Clear Skies C. N. Long, A. T. George, G. G. Mace, and T. P. Ackerman Penn State University, Department of Meteorology University Park, Pennsylvania Introduction Surface measurements to serve as "ground truth" are of primary importance in the development of retrieval algorithms using satellite measurements to predict surface irradiance. The most basic algorithms of this type deal with clear sky (i.e., cloudless) top-to-surface shortwave (SW) transfer, serving as a necessary prerequisite towards treating both clear and cloudy conditions (Cess et al. 1991). Recently, Cess et al. (1995) have used a ratio of surface and top of atmosphere SW cloud forcing to infer

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ARM - Field Campaign - Cloud IOP  

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govCampaignsCloud IOP govCampaignsCloud IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Cloud IOP 1998.04.27 - 1998.05.17 Lead Scientist : Gerald Mace For data sets, see below. Summary Monday, April 27, 1998 IOP Opening Activities: Heavy rain (nearly 2.5" since 12Z 4/26/98) at the central facility (CF) dominated the first day of the Cloud Physics/Single Column Model IOP and limited the daily activities. A 1430 GMT sonde launch commenced the 3-hour sonde launch schedule at the CF and 4 boundary facilities (BFs). Scientists/Instrumentation on Site: Citation: Has arrived and is located at the Ponca City Airport. No flights are currently planned. Flights are tentatively planned for stratus sampling when precipitation ends.

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Observed and Simulated Cirrus Cloud Properties at the SGP CART Site  

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and Simulated Cirrus Cloud Properties and Simulated Cirrus Cloud Properties at the SGP CART Site A. D. Del Genio and A. B. Wolf National Aeronautics and Space Administration Goddard Institute for Space Studies New York, New York G. G. Mace University of Utah Salt Lake City, Utah Introduction Despite their potential importance in a long-term climate change, less is known about cirrus clouds than most other cloud types, for a variety of reasons (Del Genio 2001) including: (1) the difficulty of remotely sensing ice water content (IWC), (2) uncertainty in the identities of ice nuclei and the relative importance of different nucleation processes, (3) significant variations in depth and optical thickness caused by formation and sedimentation of large particles, and (4) our relatively poor documentation of

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ARM - Publications: Science Team Meeting Documents  

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On the Detection and Analysis of Multilayered Clouds: Comparison of MODIS On the Detection and Analysis of Multilayered Clouds: Comparison of MODIS Analyses with ARM CART Site Cloud Products Baum, B.A.(a), Nasiri, S.L.(b), and Mace, G.G.(c), NASA Langley Research Center (a), University of Wisconsin-Madison (b), University of Utah (c) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting We will present new ideas regarding the detection and analysis of multilayered clouds in Moderate Resolution Imaging Spectroradiometer (MODIS) imagery. Over the past year, the MODIS cloud property retrieval effort has matured considerably as algorithms have been improved and the instrument performance has been characterized more accurately. Errors caused by noise, striping, and out-of-band response have been reduced. We have developed and tested different approaches for daytime and nighttime

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ARM - Publications: Science Team Meeting Documents  

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The March 2000 Cloud Intensive Observing Period; The Evolution of the The March 2000 Cloud Intensive Observing Period; The Evolution of the Synoptic-Scale Atmosphere and the Associated Cloud Radiative Forcing Mace, G.G.(a), Sonntag, K.L.(b), Kato, S.(c), Poellot, M.(d), Twohy, C.(e), Troth, S.(a), Zhang, Q.(a), and Minnis, P.(c), University of Utah (a), Unviersity of Oklahoma (b), NASA Langley Research Center (c), University of North Dakota (d), Oregon State University (e) During the first 3 weeks of March 2000, an intensive observing period (IOP) was held near the central facility of the Southern Great Plains ARM site. In conjunction with the ARESE II campaign, the objective of this IOP was to observe the 3-dimensional structure of the cloud field using multiple scanning and vertically pointing millimeter radars. In anticipation of

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Section 120  

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Platt Platt r Platt r e r Platt r e r Platt Session Papers 543 Verification of Cirrus Cloud Parameterizations Using Southern Great Plains Data D. A. Sovchik and T. P. Ackerman Pennsylvania State University University Park, Pennsylvania G. G. Mace University of Utah Salt Lake City, Utah Introduction An evaluation of several diagnostic cirrus cloud parameteriza- tions is presented in this study using data from the Department of Energy's Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site. We consider three parameterizations of ice water content (IWC) proposed by Heymsfield and Donner (HD 1990), Stephens et al. (ST 1990), and Slingo and Slingo (SL 1991), each coupled with parameterizations of the ice particle size characteristics by Heymsfield and Platt (HP 1984), Mitchell (MI 1994) and Platt

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ARM Value-Added Cloud Products: Description and Status  

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Value-Added Cloud Products: Value-Added Cloud Products: Description and Status M. A. Miller, K. L. Johnson, and D. T. Troyan Brookhaven National Laboratory Upton, New York E. E. Clothiaux Pennsylvania State University University Park, Pennsylvania E. J. Mlawer Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts G. G. Mace University of Utah Salt Lake City, Utah Introduction The Atmospheric Radiation Measurement (ARM) Program operates a variety of state-of-the-art active and passive remote sensors at its sites. These sensors provide information about the thermodynamic state of the atmosphere and the structure of the clouds that are present above the site. Families of value- added products (VAPs) that contain geophysically relevant data are produced from the electronic

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Section 77  

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Figure 1. Potential temperature, equivalent Figure 1. Potential temperature, equivalent potential temperature, and saturation equiva- lent potential temperature for a) the decou- pled boundary-layer observed over the ARM SGP site and b) the well-mixed boundary- layer observed over central Pennsylvania. Observational Studies of Continental Stratus-Implications for Modeling B. A. Albrecht University of Miami Miami, Florida G. G. Mace University of Utah Salt Lake City, Utah H. Verlinde and T. P. Ackerman Pennsylvania State University University Park, Pennsylvania Introduction Data from the Atmospheric Radiation Measurement (ARM) Program Southern Great Plains (SGP) site have tremendous potential for providing statistical descriptions of cloud and boundary layer properties associated with continental stratus.

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Sensitivities of SCMs to New Parameterizations of Cloud-Radiative Interactions  

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Sensitivities of SCMs to New Parameterizations Sensitivities of SCMs to New Parameterizations of Cloud-Radiative Interactions G. M. McFarquhar Department of Atmospheric Sciences University of Illinois, Urbana, Illinois S. F. Iacobellis and R. C. J. Somerville Scripps Institution of Oceanography La Jolla, California G. G. Mace and Y. Zhang Department of Atmospheric Sciences University of Utah Salt Lake City, Utah Introduction Accurate parameterizations of, and in terms of, ice cloud effective radius (r e ) are crucial for accurate model estimates of upwelling and downwelling radiative fluxes, and of cloud radiative forcing (CRF). Zhang et al. (1999), and Iacobellis and Somerville (2000) have all found that radiative fluxes are sensitive to the specification of r e and fallout, and that the most realistic vertical distribution of clouds is

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ARM - Publications: Science Team Meeting Documents: Cloud Radiative Forcing  

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Cloud Radiative Forcing at the ARM Climate Research Facility: Part 2. The Cloud Radiative Forcing at the ARM Climate Research Facility: Part 2. The Vertical Redistribution of Radiant Energy by Clouds. Mace, Gerald University of Utah Benson, Sally University of Utah Kato, Seiji Hampton University/NASA Langley Research Center Documentation with data of the effects of clouds on the radiant energy balance of the surface and atmosphere represent a critical shortcoming in the set of observations that are needed to ascertain the validity of model simulations of the earth's climate. While clouds are known to cool the climate system from TOA radiation budget studies, the redistribution of energy between the surface and atmosphere and within the atmosphere by clouds has not been examined in detail. Using data collected at the Atmospheric Radiation Measurement Program (ARM) Southern Great Plains (SGP)

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Thunderhead Radiation Measurements and Radiative Flux Analysis in Support of STORMVEX  

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Thunderhead Radiation Thunderhead Radiation Measurements and Radiative Flux Analysis in Support of STORMVEX Chuck Long Jay Mace Intent * Provide downwelling broadband radiation measurements at Thunderhead * Physically small footprint portable system * Designed to provide inputs necessary for Radiative Flux Analysis Basic RFA System COPS Hornisgrinde Deployment 1200m elevation System Components * Eppley ventilated PSP * Eppley ventilated PIR * Delta-T SPN-1 * Vaisala HMP-50 T/RH probe * Campbell CR23X datalogger SPN-1 Radiometer * Uses 7 thermopile detectors and a patented shading pattern * Measures Total and Diffuse SW with no moving parts * Includes internal heaters Relative accuracy StDev = 13.6 Winter Mountain Deployment Frost/Snow Mitigation * NSA Heated Ventilator Evaluation IOP - Testing various configurations and

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High Clouds Microphysical Retrievals Intercomparison High Clouds Microphysical Retrievals Intercomparison J. M. Comstock, S. A. McFarlane, and D. D. Turner Pacific Northwest National Laboratory Richland, Washington R. d'Entremon Atmospheric Environmental Research, Inc. Lexington, Massachusetts D. H. DeSlover University of Wisconsin Madison, Wisconsin G. G. Mace Univerity of Utah Salt Lake City, Utah S. Y. Matrosov and M. D. Shupe National Oceanic and Atmospheric Administration/Environmental Technology Laboratory Boulder, Colorado D. Mitchell Desert Research Institute Reno, Nevada K. Sassen University of Alaska Fairbanks, Alaska Z. Wang University of Maryland, Baltimore County/ National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland 1 Fourteenth ARM Science Team Meeting Proceedings, Albuquerque, New Mexico, March 22-26, 2004

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ARM - Publications: Science Team Meeting Documents  

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A Continuous Baseline Microphysical Retrieval (MICROBASE): Status of SGP A Continuous Baseline Microphysical Retrieval (MICROBASE): Status of SGP Version 1.2 and Prototype TWP Version Miller, M.A.(a), Johnson, K.L.(a), Jensen, M.P.(b), Mace, G.G.(c), Dong, X.(d), and Vogelmann, A.M.(a), Brookhaven National Laboratory (a), Columbia University (b), University of Utah (c), University of North Dakota (d) Fourteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The interaction of clouds with incoming and outgoing radiation streams produces discontinuous regions of heating and cooling within the atmospheric column. These regions can influence the atmospheric circulations at multiple scales, as well as modify the existing cloud structures. The Broadband Heating Rate Project (BBHRP) within ARM has the goal of producing instantaneous snapshots of the heating and cooling rate

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sekelsky-98.pdf  

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1 1 Comparison of Millimeter-Wave Cloud Radar Measurements for the Fall 1997 Cloud IOP S. M. Sekelsky, L. Li, J. Calloway, and R. E. McIntosh University of Massachusetts Amherst, Massachusetts M. A. Miller Brookhaven National Laboratory Upton, New York E. E. Clothiaux The Pennsylvania State University University Park, Pennsylvania S. Haimov University of Wyoming Laramie, Wyoming G. G. Mace and K. Sassen University of Utah Salt Lake City, Utah Introduction One of the primary objectives of the fall 1997 intensive observation period (IOP) was to intercompare Ka-band (35 GHz) and W-band (95 GHz) cloud radar observations and verify system calibrations. During September 1997, several cloud radars were deployed at the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site,

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ARM - Publications: Science Team Meeting Documents: Evaluation of GFDL SCM  

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Evaluation of GFDL SCM Cloud Fractions and Surface Radiation Fields with Evaluation of GFDL SCM Cloud Fractions and Surface Radiation Fields with Those from the Ground-based Remote Sensing at SGP Kim, Byung-Gon Princeton University Klein, Stephen Lawrence Livermore National Laboratory Mace, Gerald University of Utah Benson, Sally University of Utah The various kinds of approaches to obtain cloud fraction in the model still have the limitations, which accordingly result in the consequent errors in the model radiative fluxes. Because of the different schemes to estimate the cloud fraction by the model and also observation artifacts, the prudent comparisons should be made in order to reach the right answer. This study demonstrates the more revised approaches of comparisons to improve the evaluation of cloud fraction. To do this, a relatively inexpensive and

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Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius  

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Detecting and Evaluating the Effect Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius F.-L Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction Cirrus clouds can largely modify the solar reflected and terrestrial emitted radiances. The ubiquitous presence of cirrus clouds has a global coverage of about 20% to30% and more than 70% in the tropics (Wylie et al. 1994). The probability of cirrus clouds overlaying a low-level boundary layer cloud system is greater than 50% (Hahn et al. 1982, 1984; Tian and Curry 1989; Mace et al. 1997). They are often optically thin and semitransparent and frequently reside in high altitude overlapping with a low-level

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ARM - Publications: Science Team Meeting Documents: Cirrus properties and  

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Cirrus properties and air mean vertical motion retrieval using Cirrus properties and air mean vertical motion retrieval using mm-wavelength Doppler radar moments Deng, Min University of Utah Mace, Gerald University of Utah Vertically pointing millimeter wavelength Doppler radar provides valuable information on upper tropospheric cloud properties and dynamics. We are developing an innovative algorithm to simultaneously retrieve cirrus microphysical parameters and air mean vertical motion by using the three moments of the Doppler spectrum. The technique utilizes a statement that the observed Doppler spectrum is the convolution of a quiet air reflectivity spectrum with the turbulence PDF (probability density function). The set of equations describing the Doppler spectrum moments are inverted using optimal estimation theory to derive estimates of the

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Radiative Importance of ThinŽ Liquid Water Clouds  

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Program Program Accomplishments of the Cloud Properties Working Group (CPWG) August 2006 Cloud Radiative Forcing at the ARM Climate Research Facility: Using ARM Data to Establish Testable Metrics for GCM Predictions of Cloud Feedback Gerald Mace University of Utah, Salt Lake City, Utah The scientific underpinning of the Atmospheric Radiation Measurement (ARM) Program is largely based on the premise that long term ground-based measurements of certain quantities provide information sufficient to test the skill of general circulation models (GCMs) to predict radiative heating and cloud feedbacks (Stokes and Schwartz, 1994; Ackerman and Stokes, 2003). This hypothesis is based on the assumption that some set of long-term ground-based measurements provide sufficient information to characterize the physical state of the atmospheric

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221

X:\ARM_19~1\PGS1-8.WPD  

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Boundary-Layer Cloud Study Using Southern Great Boundary-Layer Cloud Study Using Southern Great Plains Cloud and Radiation Testbed (CART) Data B. Albrecht, G. Mace, X. Dong, W. Syrett, and T. Ackerman Pennsylvania State University, Department of Meteorology University Park, Pennsylvania Introduction Boundary layer clouds-stratus and fairweather cumulus- are closely coupled to the water and energy budgets of land surfaces. This coupling involves the radiative impact of the clouds on the surface energy budget and the strong dependence of cloud formation and maintenance on the turbulent fluxes of heat and moisture in the boundary layer. The continuous data collection at the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site provides a unique opportunity to study components of the coupling processes associated with boundary layer clouds

222

dong-99.PDF  

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25-Month Data Base of Stratus Cloud Properties 25-Month Data Base of Stratus Cloud Properties Generated from Ground-Based Measurements at the ARM SGP Site X. Dong Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis Atmospheric Sciences Division National Aeronautics and Space Administration Langley Research Center Hampton, Virginia T. P. Ackerman, E. E. Clothiaux, and C. N. Long Department of Meteorology Pennsylvania State University University Park, Pennsylvania G. G. Mace Meteorology Department University of Utah Salt Lake City, Utah J. C. Liljegren Ames Laboratory Ames, Iowa Introduction Boundary layer stratiform clouds are important in the regulation of the earth's radiation budget and play an important role in climate over both land and ocean (Ramanathan et al. 1989). Boundary layer stratus

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OECD/MCCI 2-D Core Concrete Interaction (CCI) tests : final report February 28, 2006.  

SciTech Connect

Although extensive research has been conducted over the last several years in the areas of Core-Concrete Interaction (CCI) and debris coolability, two important issues warrant further investigation. The first issue concerns the effectiveness of water in terminating a CCI by flooding the interacting masses from above, thereby quenching the molten core debris and rendering it permanently coolable. This safety issue was investigated in the EPRI-sponsored Melt Attack and Coolability Experiments (MACE) program. The approach was to conduct large scale, integral-type reactor materials experiments with core melt masses ranging up to two metric tons. These experiments provided unique, and for the most part repeatable, indications of heat transfer mechanism(s) that could provide long term debris cooling. However, the results did not demonstrate definitively that a melt would always be completely quenched. This was due to the fact that the crust anchored to the test section sidewalls in every test, which led to melt/crust separation, even at the largest test section lateral span of 1.20 m. This decoupling is not expected for a typical reactor cavity, which has a span of 5-6 m. Even though the crust may mechanically bond to the reactor cavity walls, the weight of the coolant and the crust itself is expected to periodically fracture the crust and restore contact with the melt. Although crust fracturing does not ensure that coolability will be achieved, it nonetheless provides a pathway for water to recontact the underlying melt, thereby allowing other debris cooling mechanisms to proceed. A related task of the current program, which is not addressed in this particular report, is to measure crust strength to check the hypothesis that a corium crust would not be strong enough to sustain melt/crust separation in a plant accident. The second important issue concerns long-term, two-dimensional concrete ablation by a prototypic core oxide melt. As discussed by Foit the existing reactor material database for dry cavity conditions is solely one-dimensional. Although the MACE Scoping Test was carried out with a two-dimensional concrete cavity, the interaction was flooded soon after ablation was initiated to investigate debris coolability. Moreover, due to the scoping nature of this test, the apparatus was minimally instrumented and therefore the results are of limited value from the code validation viewpoint. Aside from the MACE program, the COTELS test series also investigated 2-D CCI under flooded cavity conditions. However, the input power density for these tests was quite high relative to the prototypic case. Finally, the BETA test series provided valuable data on 2-D core concrete interaction under dry cavity conditions, but these tests focused on investigating the interaction of the metallic (steel) phase with concrete. Due to these limitations, there is significant uncertainty in the partition of energy dissipated for the ablation of concrete in the lateral and axial directions under dry cavity conditions for the case of a core oxide melt. Accurate knowledge of this 'power split' is important in the evaluation of the consequences of an ex-vessel severe accident; e.g., lateral erosion can undermine containment structures, while axial erosion can penetrate the basemat, leading to ground contamination and/or possible containment bypass. As a result of this uncertainty, there are still substantial differences among computer codes in the prediction of 2-D cavity erosion behavior under both wet and dry cavity conditions. In light of the above issues, the OECD-sponsored Melt Coolability and Concrete Interaction (MCCI) program was initiated at Argonne National Laboratory. The project conducted reactor materials experiments and associated analysis to achieve the following technical objectives: (1) resolve the ex-vessel debris coolability issue through a program that focused on providing both confirmatory evidence and test data for the coolability mechanisms identified in MACE integral effects tests, and (2) address remaining uncertainties relat

Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

224

Microsoft PowerPoint - Development of High Temperature_Chen_Chonglin  

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

Temperature/High Temperature/High Sensitivity Novel Chemical Resistive Sensor PhD Students: Erik Enriquez, Shanyong Bao, & Brennan Mace PhD Awarded: Dr. Chunrui Ma (UK) & Dr. Gregory Collins (WVU) PIs: Patrick Nash (retired 2012) and Chonglin Chen (PI) Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249-1644 Phone: 210-458-6427, Email: cl.chen@utsa.edu Grant Number: DE-FE0003780 Project Manager: Dr. Susan M. Maley Performance Period: 09/01/2010-8/31/2013 * Introduction * Mixed Ionic/Electronic Conductive LnBaCo 2 O 5.5 Oxides * Full Scale Chemical Sensor Development * Summary OBJECTIVES & GOALS * The objective of this research is: - investigate and understand the mechanisms of mixed ionic electronic conductive LaBaCo 2 O 5+ highly epitaxial

225

kato-99.PDF  

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

the Aerosol Thickness Derived from the Aerosol Thickness Derived from Ground-Based and Airborne Measurements S. Kato Hampton University Hampton, Virginia M. H. Bergin Georgia Institute of Technology Atlanta, Georgia T. P. Ackerman and E. E. Clothiaux The Pennsylvania State University University Park, Pennsylvania T. P. Charlock and R. A. Ferrare National Aeronautics and Space Administration Langley Research Center Hampton, Virginia N. S. Laulainen and D. D. Turner Pacific Northwest National Laboratory Richland, Washington G. G. Mace University of Utah Salt Lake City, Utah J. J. Michalsky State University of New York at Albany Albany, New York Introduction The extinction optical thickness of the atmosphere can be computed by measuring the attenuation of direct solar radiation (DSR). The aerosol extinction optical thickness in selected wavelength regions by

226

DOE/SC-ARM-10-021 STORMVEX: The Storm Peak Lab Cloud Property Validation Experiment  

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

1 1 STORMVEX: The Storm Peak Lab Cloud Property Validation Experiment Science and Operations Plan J Mace Principal Investigator S Matrosov B Orr M Shupe R Coulter P Lawson A Sedlacek G Hallar L Avallone I McCubbin C Long R Marchand September 2010 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service

227

ARM - Publications: Science Team Meeting Documents  

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

Validation of CERES/MODIS Cloud Property Retrievals Using Ground-Based Validation of CERES/MODIS Cloud Property Retrievals Using Ground-Based Measurements Obtained at the DOE ARM SGP Site Dong, X.(a), Minnis, P.(b), Sun-Mack, S.(b), and Mace, G.G.(a), University of Utah (a), NASA Langley Research Center (b) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Cloud macrophysical and microphysical properties derived from the NASA TERRA (EOS-AM) Moderate Resolution Spectroradiometer (MODIS) as part of the Clouds and the Earth's Radiant Energy System (CERES) project during November 2000-June 2001 are compared to simultaneous ground-based observations. The ground-based data taken by the Atmospheric Radiation Measurement (ARM) Program are used as "ground truth" data set in the validation of the CERES cloud products and to improve the CERES daytime and

228

Section 7  

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

A One-Year Cloud Climatology Derived from the Micro Pulse Lidar G. G. Mace Department of Meteorology, University of Utah Salt Lake City, Utah E. E. Clothiaux and T. P. Ackerman Department of Meteorology, Pennsylvania State University University Park, Pennsylvania J. D. Spinhirne and V. S. Scott NASA/Goddard Space Flight Center Greenbelt, Maryland Abstract A cloud detection algorithm that attempts to identify all of the significant power returns from the vertical column above the micro pulse lidar at all times was applied to one year of micro pulse lidar data collected at the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) central facility near Lamont, Oklahoma. The results of this analysis are presented, and the

229

ARM - Publications: Science Team Meeting Documents  

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

Validation of TERRA MODIS Cloud Properties Using Ground-Based Measurements Validation of TERRA MODIS Cloud Properties Using Ground-Based Measurements at the DOE ARM SGP Site Dong, X.(a), Xi, B.(a), Minnis, P.(b), Wielicki, B.(b), Sun-Mack, S.(c), Chen,Y.(c), and Mace, G.G.(d), University of North Dakota (a), NASA/Langley Research Center (b), SAIC, Inc. (c), University of Utah (d) Cloud macrophysical and microphysical/optical properties derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra as part of the Clouds and the Earth's Radiant Energy System (CERES) project during February 2000-December 2001 are compared to simultaneous ground-based observations. The ground-based data taken over the Atmospheric Radiation Measurement (ARM) Program Southern Great Plains (SGP) site are used as cloud truth data set in the validation of the CERES Science Team derived

230

Section 44  

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

An Automated Cloud Mask Algorithm for the An Automated Cloud Mask Algorithm for the Micropulse Lidar G. G. Mace Department of Meteorology Pennsylvania State University University Park, Pennsylvania To perform cloud base analysis, an automated technique for sky signal using the standard lidar equation (Spinhirne determination of cloud base height from the raw lidar returns 1993) and midlatitude standard atmospheres. After is needed. Previously, a straightforward signal thresholding normalization, the observations form a swarm of points about algorithm was used to determine cloud base height. The unity with the scatter due to electronic noise, solar background difficulty with this approach is illustrated in Figure 1a. The and cloud and aerosol return. micropulse lidar operates at a wavelength of 523 nm, which is

231

Jagiellonian University The Faculty of Mathematics, Physics  

E-Print Network (OSTI)

] for comprehensive review. Prospects for observability of eg. the Higgs boson(s), Supersym­ metry particles, Exotic on prospects for observability of the invisibly decaying Higgs boson in the t ? tH production process. Our process the gg # H # ZZ # # 4µ production with the Higgs boson mass of 130 GeV is used. The default

Jagiellonski, Uniwersytet

232

Search for a light Higgs boson decaying to two gluons or ss? in the radiative decays of ?(1S)  

E-Print Network (OSTI)

We search for the decay ?(1S)??A[superscript 0], A[superscript 0]?gg or ss? , where A[superscript 0] is the pseudoscalar light Higgs boson predicted by the next-to-minimal supersymmetric Standard Model. We use a sample of ...

Cowan, Ray Franklin

233

CALIFORNIA COUNCIL ON GERONTOLOGY & GERIATRICS  

E-Print Network (OSTI)

CALIFORNIA COUNCIL ON GERONTOLOGY & GERIATRICS CC GG APRIL13,2012 32nd Annual Meeting e University of Southern California Town & Gown Ballroom 665 Exposition Blvd, Los Angeles, CA CAMPUS, COMMUNITY, & INDUSTRY in mind. ABOUT CCGG The California Council on Gerontology and Geriatrics [CCGG] was founded in 1980

de Lijser, Peter

234

Higgs Coupling Measurements at a 1 TeV Linear Collider  

SciTech Connect

Methods for extracting Higgs boson signals at a 1 TeV center-of-mass energy e{sup +}e{sup -} linear collider are described. In addition, estimates are given for the accuracy with which branching fractions can be measured for Higgs boson decays to b{bar b} WW, gg, and {gamma}{gamma}.

Barklow, T

2003-12-18T23:59:59.000Z

235

Abstract Electrospraying utilises electrical forces for liquid atomisation. Droplets obtained by this method  

E-Print Network (OSTI)

is the initial mass concentration of the droplets, gg is the gas dynamic viscosity, ql is the liquid density) lithium batteries- luminescence (ZnScoatedCdSe// glass) (1­4mg/CdSe/mL) (100­300°C) CdSe(inZnSmatrix)Acetonitrile+ pyridine(2:1) 3

Haile, Sossina M.

236

Microsoft PowerPoint - Interconnect Development at PNNL.ppt ...  

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

l t f SOFC I t t Development of SOFC Interconnects and Coatings J.W. Stevenson, G.G. Xia, J.P. Choi, J.D. Templeton, X. Li, T.K. Oh, and Z. Nie Pacific Northwest National...

237

Herwig++ 2.2 Release Note.  

E-Print Network (OSTI)

(dot-dashed) are shown. of 115GeV and 300GeV are shown in Fig. 1. Only the gg ? h0g, qg ? h0q and qg ? h0q partonic processes are included in the matrix element correction as these are the only processes which have a parton-shower interpretation...

Bahr, M; Gieseke, Stefan; Giggs, M; Grellscheid, D; Hamilton, K; Latunde-Dada, Oluseyi; Platzer, S; Richardson, P; Seymour, Michael H

238

CDF Note 9999 Combined Upper Limit on Standard Model Higgs Boson Production  

E-Print Network (OSTI)

CDF Note 9999 Combined Upper Limit on Standard Model Higgs Boson Production The CDF Collaboration for the Standard Model Higgs boson at CDF. The six major analyses combined are the WH b¯b channels, the WH + ZH E Model decay branching fractions of the Higgs boson and that the ratios of the rates for the WH, ZH, gg

Fermilab

239

PERFORMANCE AND APPLICATION OF A DOUBLE CRYSTAL MONOCHROMATOR IN THE ENERGY REGION 800 < hv < 4500 eV  

E-Print Network (OSTI)

Edit. H. Winick and G. Brown, SSRL Report No. 78/04. N. G.G. Tobin, and D. A. Shirley, SSRL Report No. 81/02. 21. Z.E. Umbach, and D. A. Shirley, SSRL Report No. 81/02. 22. S.

Hussain, Z.

2010-01-01T23:59:59.000Z

240

Radiological Dose Assessment Related to Management of Naturally Occurring Radioactive Materials Generated by the Petroleum Industry  

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

Tebes is affiliated with the University of Illinois. Tebes is affiliated with the University of Illinois. ANL/EAD-2 Radiological Dose Assessment Related to Management of Naturally Occurring Radioactive Materials Generated by the Petroleum Industry by K.P. Smith, D.L. Blunt, G.P. Williams, and C.L. Tebes * Environmental Assessment Division Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 September 1996 Work sponsored by the United States Department of Energy, Office of Policy iii CONTENTS ACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii NOTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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241

xyxEssevs hi ysx hi riiqxi xyxEssevs yp riiqxi ysx  

E-Print Network (OSTI)

) E une prmétristion moE dulireD K un orps qudrtique imginire dns lequel tous les fteurs premiers de N théorie de l multiplition omplexe montre qu9il est dé(ni sur K[c]D le orps d9ordre de onduteur c de KF PF oit p N un nomre premier etD pour n 0D xn = [C/Opn C/N-1 pn ] X0(N)(K[pn ])F ve orps K[p ] = n0K

Cornut, Christophe - Institut de Mathématiques de Jussieu, Université Paris 7

242

The association of education with body mass index and waist circumference in the EPIC-PANACEA study  

E-Print Network (OSTI)

, Noemie Travier8, Maria-Jose Tormo9,10,11, Esther Molina11,12, Miren Dorronsoro11,13, Aurelio Barricarte11,14, Laudina Rodrguez15, Francesca L Crowe16, Kay-Tee Khaw17, Nicholas J Wareham6, Petra GA van Boeckel4, H Bas Bueno-de-Mesquita4, Kim Overvad18... KP, Dubbert PM: Overweight and obesity: prevalence, consequences, and causes of a growing public health problem. Am J Med Sci 2006, 331(4):166-174. 3. McLaren L: Socioeconomic Status and Obesity. Epidemiol Rev 2007, 29(1):29-48. 4. Zhang Q, Wang Y...

Hermann, Silke; Rohrmann, Sabine; Linseisen, Jakob; May, Anne M; Kunst, Anton; Besson, Herve; Romaguera, Dora; Travier, Noemie; Tormo, Maria-Jose; Molina, Esther; Dorronsoro, Miren; Barricarte, Aurelio; Rodriguez, Laudina; Crowe, Francesca L; Khaw, Kay-Tee; Wareham, Nicholas J; van Boeckel, Petra G A; Bueno-de-Mesquita, H Bas; Overvad, Kim; Uhre Jakobsen, Marianne; Tjonneland, Anne; Halkjaer, Jytte; Agnoli, Claudia; Mattiello, Amalia; Tumino, Rosario; Masala, Giovanna; Vineis, Paolo; Naska, Androniki; Orfanos, Philippos; Trichopoulou, Antonia; Kaaks, Rudolf; Bergmann, Manuela M; Steffen, Annika; Van Guelpen, Bethany; Johansson, Ingegerd; Borgquist, Signe; Manjer, Jonas; Braaten, Tonje; Fagherazzi, Guy; Clavel-Chapelon, Francoise; Mouw, Traci; Norat, Teresa; Riboli, Elio; Rinaldi, Sabina; Slimani, Nadia; Peeters, Petra H M

2011-03-17T23:59:59.000Z

243

Modeling of temperature and excitation dependences of efficiency in an InGaN light-emitting diode  

E-Print Network (OSTI)

The changes in excitation dependence of efficiency with temperature is modeled for a wurtzite InGaN light-emitting diode. The model incorporates bandstructure changes with carrier density arising from screening of quantum-confined Stark effect. Bandstructure is computed by solving Poisson and k.p equations in the envelop approximation. The information is used in a dynamical model for populations in momentum-resolved electron and hole states. Application of the approach shows the interplay of quantum-well and barrier emissions giving rise to shape changes in efficiency versus current density with changing temperature, as observed in some experiments.

Chow, Weng W

2013-01-01T23:59:59.000Z

244

Basis for UCNI | Department of Energy  

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

Basis for UCNI Basis for UCNI Basis for UCNI What documents contain the legal and policy foundations for the UCNI program? Section 148 of the Atomic Energy Act of 1954, as amended (42 U.S.C. 2011 et seq.), is the statutory basis for the UCNI program. 10 CFR Part 1017, Identification and Protection of Unclassified Controlled Nuclear Information specifies many detailed policies and requirements concerning the UCNI program. DOE O 471.1B, Identification and Protection of Unclassified Controlled Nuclear Information, specifies additional policies and requirements concerning the Department of Energy (DOE) UCNI program. UCNI General Guideline, GG-5, is a record of decisions made by the Director, OC, as to what general subject areas are UCNI. Note: GG-5 may only be used by the Director, OC, to make determinations as to whether

245

Matching NLO QCD and parton showers in heavy flavor production.  

E-Print Network (OSTI)

by the LO FEX process Qg ? Qg. Since initial-state quasi-collinear gluon splitting forms part of the evolution of the PDFs of the incoming hadrons implemented through parton showers, we are in danger of double-counting if we include both LO FEX and NLO FCR... (Q,t)qq ? ? ? MC ( tQ ? tQ, z(t)Q ? z (t) Q , ? (t) Q ? ? (t) Q ) (5.9) 20 qg initial state d?(+,t)qg ? ? ? MC = ?S 4? d?(t)+ ?(t)+ dz(t)+ P (0)gq (z (t) + ) d?(t)gg? ( (z(t)+ )2 ? ?(t)+ ) (5.10) d?(+,u)qg ? ? ? MC = d?(+,t)qg ? ? ? MC ( d?(t)gg ? d?...

Frixione, Stefano; Nason, Paolo; Webber, Bryan R

246

Program predicts reservoir temperature and geothermal gradient  

Science Conference Proceedings (OSTI)

This paper reports that a Fortran computer program has been developed to determine static formation temperatures (SFT) and geothermal gradient (GG). A minimum of input data (only two shut-in temperature logs) is required to obtain the values of SFT and GG. Modeling of primary oil production and designing enhanced oil recovery (EOR) projects requires knowing the undisturbed (static) reservoir temperature. Furthermore, the bottom hole circulating temperature (BHCT) is an important factor affecting a cement's thickening time, rheological properties, compressive strength, development, and set time. To estimate the values of BHCT, the geothermal gradient should be determined with accuracy. Recently we obtained an approximate analytical solution which describes the shut-in temperature behavior.

Kutasov, I.M.

1992-06-01T23:59:59.000Z

247

Delft University of Technology Department of Information  

E-Print Network (OSTI)

.6, and finally the conclusions from Phase I are listed in Chapter 8. My special thanks go out to Mr. H.J. Kremer. This section de­ scribes the simple fault classes following [vdGG97]. Table 1.1 lists the simple faults, and lists the recommendations for the IPTS. ffl Chapter 8 lists the conclusions resulting from the Phase I

Gaydadjiev, Georgi

248

Higgs Boson Resummation via Bottom-Quark Fusion  

E-Print Network (OSTI)

The region of small transverse momentum in q-qbar- and gg-initiated processes must be studied in the framework of resummation to account for the large, logarithmically-enhanced contributions to physical observables. In this letter, we study resummed differential cross-sections for Higgs production via bottom-quark fusion. We find that the differential distribution peaks at approximately 15 GeV, a number of great experimental importance to measuring this production channel.

B. Field

2004-07-21T23:59:59.000Z

249

Space Time Matter inflation  

E-Print Network (OSTI)

We study a model of power-law inflationary inflation using the Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical metric that describes an apparent vacuum. In this approach the expansion is governed by a single scalar (neutral) quantum field. In particular, we study the case where the power of expansion of the universe is $p \\gg 1$. This kind of model is more successful than others in accounting for galaxy formation.

Mariano Anabitarte; Mauricio Bellini

2005-08-31T23:59:59.000Z

250

Contribution of a pure NCG forbidden process to the Z associated Higgs production  

SciTech Connect

The contribution of the pure NCG forbidden subprocess gg{yields}ZHis calculated. It is shown that the cross section becomes important at the LHC energies and depends strongly on the choice of the noncommutativity parameter. Because of the gluons luminosity inside the proton, it becomes comparable to that of the commutative standard model subprocess qq(bar sign)ZH for reasonable values of the NCG parameter.

Bradji, O.; Mebarki, N. [Theoretical Phys. Lab., Faculty of Physics -USTHBB. P. 32 Bab Ezzouar 16079, Algiers (Algeria); Laboratoire de Physique Mathematique et Subatomique, Mentouri University, Constantine (Algeria)

2012-06-27T23:59:59.000Z

251

Shifts in the Properties of the Higgs Boson from Radion Mixing  

SciTech Connect

We examine how mixing between the Standard Model(SM) Higgs boson, h, and the radion of the Randall-Sundrum model modifies the expected properties of the Higgs boson. In particular we demonstrate that the total and partial decay widths of the Higgs, as well as the h {yields} gg branching fraction, can be substantially altered from their SM expectations, while the remaining branching fractions are modified less than {approx}<5% for most of the parameter space volume.

Rizzo, Thomas G.

2002-02-25T23:59:59.000Z

252

Radion Mixing Effects on the Properties of the Standard Model Higgs Boson  

SciTech Connect

We examine how mixing between the Standard Model(SM) Higgs boson, h, and the radion of the Randall-Sundrum model modifies the expected properties of the Higgs boson. In particular we demonstrate that the total and partial decay widths of the Higgs, as well as the h {yields} gg branching fraction, can be substantially altered from their SM expectations, while the remaining branching fractions are modified less than {approx_equal}5% for most of the parameter region.

Rizzo, Thomas G.

2002-01-02T23:59:59.000Z

253

Nuclear reaction rates and energy in stellar plasmas : The effect of highly damped modes  

E-Print Network (OSTI)

The effects of the highly damped modes in the energy and reaction rates in a plasma are discussed. These modes, with wavenumbers $k \\gg k_{D}$, even being only weakly excited, with less than $k_{B}T$ per mode, make a significant contribution to the energy and screening in a plasma. When the de Broglie wavelength is much less than the distance of closest approach of thermal electrons, a classical analysis of the plasma can

Merav Opher; Luis O. Silva; Dean E. Dauger; Viktor K. Decyk; John M. Dawson

2001-05-09T23:59:59.000Z

254

MINOR DIVISION LEAGUE A LEAGUE B LEAGUE C  

E-Print Network (OSTI)

LEAGUE P LEAGUE Q LEAGUE R Bumble Bee Tuna 4 0 Dime Droppers 4 0 Rack Of Lamb 4 0 Sofa King 3 1 Run-N-Gun Wizards 1 3 Penguins 1 4 Wild Stallions 0 5 #12;LEAGUE AA LEAGUE BB LEAGUE CC The Starr's 3 0 Run-N-Gun 4 Da Warriors 0 4 LEAGUE GG Sale's Abusement Park 3 0 America's Team 2 1 Twenty One Nickel 2 2 Pickle

Yener, Aylin

255

Iterated and irreducible pion-photon exchange in nuclei  

E-Print Network (OSTI)

We calculate the contribution to the nuclear energy density functional which arises from iterated pion-photon exchange between nucleons. In heavy nuclei, this novel charge symmetry breaking interaction leads to an additional binding of each proton by about 0.2 MeV. Compared to that the analogous effect from irreducible pion-photon exchange is negligibly small. As a possible mechanism to resolve the Nolen-Schiffer anomaly we propose the iteration of one-photon exchange with an attractive short-range NN-interaction. The corresponding energy per proton reads: $\\bar E[\\rho_p]=(2\\alpha/15\\pi^2)(\\pi^2 -3+6 \\ln2) {\\cal A}_{pp} k_p^2$ with $\\rho_p =k_p^3/ 3\\pi^2$ the proton density and ${\\cal A}_{pp}\\approx 2 $fm an effective (in-medium) scattering length. Hints for such a value of ${\\cal A}_{pp}$ come from phenomenological Skyrme forces and from the neutron matter equation of state.

N. Kaiser

2003-12-16T23:59:59.000Z

256

Solar wind triggering of geomagnetic disturbances and strong (M>6.8) earthquakes during the November - December 2004 period  

E-Print Network (OSTI)

This paper brings space weather prediction close to earthquake (EQ) prediction research. The results of this paper support conclusions of previously presented statistical studies that solar activity influences the seismic activity, this influence is mediated through rapid geomagnetic disturbances and the geomagnetic disturbances are related with increases of solar wind speed. Our study concern an example of 40 days with direct response of a series of 7 strong-to-giant (M=6.8-9.3) EQs (including the Andaman-Sumatra EQ) to solar wind speed increases and subsequent geomagnetic fast disturbances. Our analysis for 10 M>6 EQs from November 23 to December 28, 2004 suggests a mean time response delay of EQs to fast geomagnetic disturbances of ~1.5 days. The two giant EQs during this period occurred after the two fastest geomagnetic variations, as revealed by the ratio of the daily Kp index variation over a day {\\Delta}Kp/{\\Delta}t (12 and 15, respectively). It suggests that the fast disturbance of the magnetosphere, ...

Anagnostopoulos, G; Antoniou, P

2010-01-01T23:59:59.000Z

257

Kadomtsev-Petviashvili solitons propagation in a plasma system with superthermal and weakly relativistic effects  

SciTech Connect

Two dimensional (2D) solitons are studied in a plasma system comprising of relativistically streaming ions, kappa distributed electrons, and positrons. Kadomtsev-Petviashvili (KP) equation is derived through the reductive perturbation technique. Analytical solution of the KP equation has been studied numerically and graphically. It is noticed that kappa parameters of electrons and positrons as well as the ions relativistic streaming factor have an emphatic influence on the structural as well as propagation characteristics of two dimensional solitons in the considered plasma system. Our results may be helpful in the understanding of soliton propagation in astrophysical and laboratory plasmas, specifically the interaction of pulsar relativistic wind with supernova ejecta and the transfer of energy to plasma by intense electric field of laser beams producing highly energetic superthermal and relativistic particles [L. Arons, Astrophys. Space Sci. Lib. 357, 373 (2009); P. Blasi and E. Amato, Astrophys. Space Sci. Proc. 2011, 623; and A. Shah and R. Saeed, Plasma Phys. Controlled Fusion 53, 095006 (2011)].

Hafeez-Ur-Rehman; Mahmood, S. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad (Pakistan); Department of Physics and Applied Mathematics, PIEAS, Nilore, 44000 Islamabad (Pakistan); Shah, Asif; Haque, Q. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad (Pakistan)

2011-12-15T23:59:59.000Z

258

Effect of nonthermal electrons on the propagation characteristics and stability of two-dimensional nonlinear electrostatic coherent structures in relativistic electron positron ion plasmas  

SciTech Connect

Two-dimensional propagation of nonlinear ion acoustic shock and solitary waves in an unmagnetized plasma consisting of nonthermal electrons, Boltzmannian positrons, and singly charged hot ions streaming with relativistic velocities are investigated. The system of fluid equations is reduced to Kadomtsev-Petviashvili-Burgers and Kadomtsev-Petviashvili (KP) equations in the limit of small amplitude perturbation. The dependence of the ion acoustic shock and solitary waves on various plasma parameters are explored in detail. Interestingly, it is observed that increasing the nonthermal electron population increases the wave dispersion which enervates the strength of the ion acoustic shock wave; however, the same effect leads to an enhancement of the soliton amplitude due to the absence of dissipation in the KP equation. The present investigation may be useful to understand the two-dimensional propagation characteristics of small but finite amplitude localized shock and solitary structures in planetary magnetospheres and auroral plasmas where nonthermal populations of electrons have been observed by several satellite missions.

Masood, W. [Theoretical Plasma Physics Division, PINSTECH, P. O. Nilore, Islamabad (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, 44000 Islamabad (Pakistan); Rizvi, H. [Theoretical Plasma Physics Division, PINSTECH, P. O. Nilore, Islamabad (Pakistan)

2011-06-15T23:59:59.000Z

259

Neutrino Propagation in a Strongly Magnetized Medium  

E-Print Network (OSTI)

We derive general expressions at the one-loop level for the coefficients of the covariant structure of the neutrino self-energy in the presence of a constant magnetic field. The neutrino energy spectrum and index of refraction are obtained for neutral and charged media in the strong-field limit ($M_{W}\\gg \\sqrt{B}\\gg m_{e},T,\\mu ,| \\mathbf{p}| $) using the lowest Landau level approximation. The results found within the lowest Landau level approximation are numerically validated, summing in all Landau levels, for strong $B\\gg T^{2}$ and weakly-strong $B \\gtrsim T^{2}$ fields. The neutrino energy in leading order of the Fermi coupling constant is expressed as the sum of three terms: a kinetic-energy term, a term of interaction between the magnetic field and an induced neutrino magnetic moment, and a rest-energy term. The leading radiative correction to the kinetic-energy term depends linearly on the magnetic field strength and is independent of the chemical potential. The other two terms are only present in a charged medium. For strong and weakly-strong fields, it is found that the field-dependent correction to the neutrino energy in a neutral medium is much larger than the thermal one. Possible applications to cosmology and astrophysics are considered.

E. Elizalde; E. J. Ferrer; V. de la Incera

2004-04-26T23:59:59.000Z

260

Neutrino Propagation in a Strongly Magnetized Medium  

E-Print Network (OSTI)

We derive general expressions at the one-loop level for the coefficients of the covariant structure of the neutrino self-energy in the presence of a constant magnetic field. The neutrino energy spectrum and index of refraction are obtained for neutral and charged media in the strong-field limit ($M_{W}\\gg \\sqrt{B}\\gg m_{e},T,\\mu ,| \\mathbf{p}| $) using the lowest Landau level approximation. The results found within the lowest Landau level approximation are numerically validated, summing in all Landau levels, for strong $B\\gg T^{2}$ and weakly-strong $B \\gtrsim T^{2}$ fields. The neutrino energy in leading order of the Fermi coupling constant is expressed as the sum of three terms: a kinetic-energy term, a magnetic-field neutrino-induced-magnetic-moment interaction term, and a rest-energy term. The leading radiative correction to the kinetic-energy term depends linearly on the magnetic field strength and is independent of the chemical potential. The other two terms are only present in a charged medium. For str...

Elizalde, E; De la Incera, V

2004-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Ultra-stable implanted 83Rb/83mKr electron sources for the energy scale monitoring in the KATRIN experiment  

E-Print Network (OSTI)

The KATRIN experiment aims at the direct model-independent determination of the average electron neutrino mass via the measurement of the endpoint region of the tritium beta decay spectrum. The electron spectrometer of the MAC-E filter type is used, requiring very high stability of the electric filtering potential. This work proves the feasibility of implanted 83Rb/83mKr calibration electron sources which will be utilised in the additional monitor spectrometer sharing the high voltage with the main spectrometer of KATRIN. The source employs conversion electrons of 83mKr which is continuously generated by 83Rb. The K-32 conversion line (kinetic energy of 17.8 keV, natural line width of 2.7 eV) is shown to fulfill the KATRIN requirement of the relative energy stability of +/-1.6 ppm/month. The sources will serve as a standard tool for continuous monitoring of KATRIN's energy scale stability with sub-ppm precision. They may also be used in other applications where the precise conversion lines can be separated from the low energy spectrum caused by the electron inelastic scattering in the substrate.

M. Zbo?il; S. Bauer; M. Beck; J. Bonn; O. Dragoun; J. Jak\\rubek; K. Johnston; A. Kovalk; E. W. Otten; K. Schlsser; M. Slezk; A. palek; T. Thmmler; D. Vnos; J. emli?ka; C. Weinheimer

2012-12-20T23:59:59.000Z

262

A comparison of cloud microphysical quantities with forecasts from cloud prediction models  

SciTech Connect

Numerical weather prediction models (ECMWF, NCEP) are evaluated using ARM observational data collected at the Southern Great Plains (SGP) site. Cloud forecasts generated by the models are compared with cloud microphysical quantities, retrieved using a variety of parameterizations. Information gained from this comparison will be utilized during the FASTER project, as models are evaluated for their ability to reproduce fast physical processes detected in the observations. Here the model performance is quantified against the observations through a statistical analysis. Observations from remote sensing instruments (radar, lidar, radiometer and radiosonde) are used to derive the cloud microphysical quantities: ice water content, liquid water content, ice effective radius and liquid effective radius. Unfortunately, discrepancies in the derived quantities arise when different retrieval schemes are applied to the observations. The uncertainty inherent in retrieving the microphysical quantities using various retrievals is estimated from the range of output microphysical values. ARM microphysical retrieval schemes (Microbase, Mace) are examined along with the CloudNet retrieval processing of data from the ARM sites for this purpose. Through the interfacing of CloudNet and ARM processing schemes an ARMNET product is produced and employed as accepted observations in the assessment of cloud model predictions.

Dunn, M.; Jensen, M.; Hogan, R.; OConnor, E.; Huang, D.

2010-03-15T23:59:59.000Z

263

Atmospheric Carbon Dioxide Record from In Situ Measurements at Baring Head  

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

Baring Head Baring Head Atmospheric Carbon Dioxide Record from In Situ Measurements at Baring Head graphics Graphics data Data Investigators M.R. Manning, A.J. Gomez, K.P. Pohl National Institute of Water and Atmospheric Research, Ltd., Climate Division, Gracefield Road, Gracefield, P.O. Box 31-311, Lower Hutt, New Zealand Period of Record 1970-93 Methods Determinations of atmospheric CO2 mixing ratios are made using a Siemens Ultramat-3 nondispersive infrared (NDIR) gas analyzer. The NDIR CO2 analyzer is connected via a gas manifold consisting of stainless steel tubing and computer-controlled solenoid switches to 12 gas cylinders and 2 sample air lines. The NDIR analyzer compares ambient air CO2 mixing ratios relative to known CO2 mixing ratios in tanks of compressed reference gases.

264

Event:2012 Bonn Climate Change Conference | Open Energy Information  

Open Energy Info (EERE)

Bonn Climate Change Conference Bonn Climate Change Conference Jump to: navigation, search Calendar.png 2012 Bonn Climate Change Conference: on 2012/05/14 The 36th sessions of the Subsidiary Body for Implementation (SBI) and of the Subsidiary Body for Scientific and Technological Advice (SBSTA), the fifteenth session of the Ad Hoc Working Group on Long-term Cooperative Action under the Convention (AWG-LCA), the seventeenth session of the Ad Hoc Working Group on Further Commitments for Annex I Parties under the Kyoto Protocol (AWG-KP) and the first session of the Ad Hoc Working Group on the Durban Platform for Enhanced Action (ADP) will take place concurrently from 14 to 25 May. All sessions will be held at the Maritim Hotel in Bonn. Further information on the sessions will be available at a

265

A Database of Herbaceous Vegetation Responses to Elevated Atmospheric CO2  

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

Herbaceous Vegetation Responses to Elevated Atmospheric CO2 Herbaceous Vegetation Responses to Elevated Atmospheric CO2 (NDP-073) image Data image PDF file image Contributed by Michael H. Jones Peter S. Curtis Department of Evolution, Ecology, and Organismal Biology The Ohio State University Columbus, Ohio Prepared by Robert M. Cushman and Antoinette L. Brenkert Carbon Dioxide Information Analysis Center Environmental Sciences Division Publication No. 4909 Date Published: November 1999 Prepared for the Environmental Sciences Division Office of Biological and Environmental Research Budget Activity Number KP 12 04 01 0 Prepared by the Carbon Dioxide Information Analysis Center OAK RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831-6290 managed by LOCKHEED MARTIN ENERGY RESEARCH CORP. for the U.S. DEPARTMENT OF ENERGY under contract DE-AC05-96OR22464

266

UNIRIB Publications: 2007 Bibliography  

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

7 Bibliography 7 Bibliography These citations provide bibliographical information about articles published by University Radioactive Ion Beam (UNIRIB) consortium staff in 2007. Articles in Scientific Journals Alpha Decay of ¹⁰⁹I and Its Implications for the Proton Decay of ¹⁰⁵Sb and the Astrophysical Rapid Proton-Capture Process, C. Mazzocchi, R.K. Grzywacz, S.N. Liddick, K.P. Rykaczewski, H. Schatz, J.C. Batchelder, C.R. Bingham, C.J. Gross, J.H. Hamilton, J.K. Hwang, S. Ilyushkin, A. Korgul, W. Krolas, K. Li, R.D. Page, D. Simpson and J.A. Winger, Phys. Rev. Lett. 98, 212501 (2007) Conferences/Meetings Development of a High Resolution Isobar Separator for Study of Exotic Decays, A. Piechaczek, V. Shchepunov , H.K. Carter, J.C. Batchelder, E.F. Zganjar, S.N. Liddick, H. Wollnik, Y. Hu, B.O. Griffith, Proceedings from

267

Two Long-Term Instrumental Climatic Data Bases of the People's Republic of  

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

9 9 DOI: 10.3334/CDIAC/cli.ndp039 Two Long-Term Instrumental Climatic Data Bases of the People's Republic of China (1997) Download the Data and ASCII Documentation files of NDP-039 Download View, download, or print PDF documentation of NDP-039 Contributed by Tao Shiyan, Fu Congbin, Zeng Zhaomei, Zhang Qingyun Institute of Atmospheric Physics Chinese Academy of Sciences Beijing, China Prepared by D. P. Kaiser (d9k@ornl.gov) Carbon Dioxide Information Analysis Center Oak Ridge National Laboratory Oak Ridge, Tennessee Environmental Sciences Division Publication No. 4699 Date Published: September 1997 Prepared for the Environmental Sciences Division Office of Biological and Environmental Research U.S. Department of Energy Budget Activity Number KP 12 04 01 0 Prepared by the

268

Estimates of Global, Regional, and National Annual CO2 Emissions from  

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

0 (1995) 0 (1995) (click above to download the data!) Estimates of Global, Regional, and Naitonal Annual CO2 Emissions from Fossil-Fuel Burning, Hydraulic Cement Production, and Gas Flaring: 1950-1992 NDP-030/R6 Cover T. A. Boden G. Marland Environmental Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee R. J. Andres Institute of Northern Engineering School of Engineering University of Alaska-Fairbanks Fairbanks, Alaska Environmental Sciences Division Publication No. 4473 Date Published: December 1995 Prepared for the Environmental Sciences Division Office of Biological and Environmental Research Budget Activity Number KP 05 02 00 0 Prepared by the Carbon Dioxide Information Analysis Center World Data Center-A for Atmospheric Trace Gases OAK RIDGE NATIONAL LABORATORY

269

1  

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

Wave Cloud Radar Upgrades: Wave Cloud Radar Upgrades: Review, Status, and Plans K.B. Widener Pacific Northwest National Laboratory Richland, Washington K.P. Moran National Oceanic and Atmospheric Administration- Earth System Research Laboratory-Physical Sciences Division Boulder, Colorado Introduction The Atmospheric Radiation Measurement (ARM) Program currently operates five millimeter-wave cloud radars (MMCRs) at the ARM Climate Research Facility (ACRF) Southern Great Plains (SGP) site, North Slope of Alaska (NSA) locale's Barrow site, and Tropical Western Pacific (TWP) locale's Manus, Nauru, and Darwin sites. Currently, three different signal processors are deployed, and we are in process of upgrading the remaining two radars to provide higher reliability and efficiency along with

270

Research Highlight  

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

Measured Radiative Cooling from Reflective Roofs in India Measured Radiative Cooling from Reflective Roofs in India Download a printable PDF Submitter: Fischer, M. L., Lawrence Berkeley National Laboratory Area of Research: Radiation Processes Working Group(s): Aerosol Life Cycle, Cloud Life Cycle, Cloud-Aerosol-Precipitation Interactions Journal Reference: Salamanca F, S Tonse, S Menon, V Garg, KP Singh, M Naja, and ML Fischer. 2012. "Top-of-atmosphere radiative cooling with white roofs: Experimental verification and model-based evaluation." Environmental Research Letters, 7(4), 044007, doi:10.1088/1748-9326/7/4/044007. True color image of light (PW1, PW2) and unpainted tar (PD1), and concrete (PD2) roofs at the Pantnagar, India site taken on October 21, 2011. We note that the concrete roof is considerably more reflective than the tar roof

271

Final_Tech_Session_Schedule_and_Location.xls  

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

And Separation And Separation Techniques For Power Generation Point Sources H.W. Pennline, D.J. Fauth, M.L. Gray, J.S. Hoffman, K.L. Jones, D.R. Luebke, B.I. Morsi, K.P. Resnik, R.V. Siriwardane, and J.T. Yeh U.S. Department of Energy National Energy Technology Laboratory Fourth Annual Conference on Carbon Capture and Sequestration May 2 - 5, 2005 Alexandria, Virginia POINT SOURCES OF INTEREST * Fossil-fuel power generation plants contribute about 1/3 of anthropogenic CO 2 emissions * Power generation point sources - Pulverized-coal combustion plants - Advanced power systems * CO 2 concentration from large sources (fossil fueled power plants) typically low * Capture step - Post-combustion - Pre-combustion * Storage step in carbon sequestration requires concentrated CO 2 Novel CO

272

Wavelet Analysis on Solar Wind Parameters and Geomagnetic Indices  

E-Print Network (OSTI)

The sun as an oscillator produces frequencies which propagate in the heliosphere, via solar wind, to the terrestrial magnetosphere. We searched for those frequencies in the parameters of the near Earth solar plasma and the geomagnetic indices for the past four solar cycles. The solar wind parameters used in this work are the interplanetary magnetic field, plasma beta, Alfven Mach number, solar wind speed, plasma temperature, plasma pressure, plasma density and the geomagnetic indices DST, AE, Ap and Kp. We found out that each parameter of the solar wind exhibit certain periodicities which di?erentiate in each cycle. Our results indicate intermittent periodicities in our data, some of them shared between the solar wind parameters and geomagnetic indices.

Katsavrias, Ch; Moussas, X

2012-01-01T23:59:59.000Z

273

Symmetries of Holographic Minimal Models  

E-Print Network (OSTI)

It was recently proposed that a large N limit of a family of minimal model CFTs is dual to a certain higher spin gravity theory in AdS_3, where the 't Hooft coupling constant of the CFT is related to a deformation parameter of the higher spin algebra. We identify the asymptotic symmetry algebra of the higher spin theory for generic 't Hooft parameter, and show that it coincides with a family of W-algebras previously discovered in the context of the KP hierarchy. We furthermore demonstrate that this family of W-algebras controls the representation theory of the minimal model CFTs in the 't Hooft limit. This provides a non-trivial consistency check of the proposal and explains part of the underlying mechanism.

Matthias R. Gaberdiel; Thomas Hartman

2011-01-14T23:59:59.000Z

274

Symmetries of Holographic Minimal Models  

E-Print Network (OSTI)

It was recently proposed that a large N limit of a family of minimal model CFTs is dual to a certain higher spin gravity theory in AdS_3, where the 't Hooft coupling constant of the CFT is related to a deformation parameter of the higher spin algebra. We identify the asymptotic symmetry algebra of the higher spin theory for generic 't Hooft parameter, and show that it coincides with a family of W-algebras previously discovered in the context of the KP hierarchy. We furthermore demonstrate that this family of W-algebras controls the representation theory of the minimal model CFTs in the 't Hooft limit. This provides a non-trivial consistency check of the proposal and explains part of the underlying mechanism.

Gaberdiel, Matthias R

2011-01-01T23:59:59.000Z

275

Energy dependence of $\\bar{K}N$ interaction in nuclear medium  

E-Print Network (OSTI)

When the $\\bar{K}N$ system is submerged in nuclear medium the $\\bar{K}N$ scattering amplitude and the final state branching ratios exhibit a strong energy dependence when going to energies below the $\\bar{K}N$ threshold. A sharp increase of $\\bar{K}N$ attraction below the $\\bar{K}N$ threshold provides a link between shallow $\\bar{K}$-nuclear potentials based on the chiral $\\bar{K}N$ amplitude evaluated at threshold and the deep phenomenological optical potentials obtained in fits to kaonic atoms data. We show the energy dependence of the in-medium $K^{-}p$ amplitude and demonstrate the impact of energy dependent branching ratios on the $\\Lambda$-hypernuclear production rates. \\keywords{kaon-nucleon amplitude \\and nuclear medium \\and hypernuclei

A. Cieply

2011-12-05T23:59:59.000Z

276

Anti-self-dual fields and manifolds  

E-Print Network (OSTI)

Kadomtsev-Petviashvili (dKP), SU(?) Toda, Korteweg-de Vries, non-linear Schrodinger and Toda field equation as well as Painleves and Nahms equations and many others, for an overview see [7] and references therein. In fact Ward conjectures [8] that many... and ASD twoforms up to scale. On the Lie algebra level, we have an induced isomorphism of so(4,C) ?= sl(2,C)? sl(2,C) which leads to a splitting of the LeviCivita connection ?. Taking Car- tans first structural equation3 deAA? = ?AA?BB? ? eBB ? (2.18) 3...

Hgner, Moritz

2013-04-30T23:59:59.000Z

277

Jordan structures in mathematics and physics  

E-Print Network (OSTI)

The aim of this paper is to offer an overview of the most important applications of Jordan structures inside mathematics and also to physics, up-dated references being included. For a more detailed treatment of this topic see - especially - the recent book Iordanescu [364w], where sugestions for further developments are given through many open problems, comments and remarks pointed out throughout the text. Nowadays, mathematics becomes more and more nonassociative and my prediction is that in few years nonassociativity will govern mathematics and applied sciences. Keywords: Jordan algebra, Jordan triple system, Jordan pair, JB-, JB*-, JBW-, JBW*-, JH*-algebra, Ricatti equation, Riemann space, symmetric space, R-space, octonion plane, projective plane, Barbilian space, Tzitzeica equation, quantum group, B\\"acklund-Darboux transformation, Hopf algebra, Yang-Baxter equation, KP equation, Sato Grassmann manifold, genetic algebra, random quadratic form.

Radu Iordanescu

2011-06-22T23:59:59.000Z

278

Band gap tuning and optical absorption in type-II InAs/GaSb mid infrared short period superlattices: 14 bands K Dot-Operator p study  

Science Conference Proceedings (OSTI)

The MBE growth of short-period InAs/GaSb type-II superlattice structures, varied around 20.5 A InAs/24 A GaSb were [J. Applied physics, 96, 2580 (2004)] carried out by Haugan et al. These SLs were designed to produce devices with an optimum mid-infrared photoresponse and a sharpest photoresponse cutoff. We have used a realistic and reliable 14-band k.p formalism description of the superlattice electronic band structure to calculate the absorption coefficient in such short-period InAs/GaSb type-II superlattices. The parameters for this formalism are known from fitting to independent experiments for the bulk materials. The band-gap energies are obtained without any fitting parameters, and are in good agreement with experimental data.

AbuEl-Rub, Khaled M. [Department of Applied Physical Sciences, Jordan University of Science and Technology Irbid, 21141 (Jordan)

2012-09-06T23:59:59.000Z

279

Six- and Three-Hourly Meteorological Observations from 223 Former U.S.S.R.  

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

Six- and Three-Hourly Meteorological Observations from 223 Former U.S.S.R. Six- and Three-Hourly Meteorological Observations from 223 Former U.S.S.R. Stations (NDP-048) DOI: 10.3334/CDIAC/cli.ndp048 image PDF image Data image Previous Data (data through 1990, published in 1998) image Investigators Contributed by V. N. Razuvaev, E. B. Apasova, R. A. Martuganov All-Russian Research Institute of Hydrometeorological Information-World Data Centre Obninsk, Russia Prepared by D. P. Kaiser and G. P. Marino (contact: kaiserdp@ornl.gov) Carbon Dioxide Information Analysis Center Oak Ridge National Laboratory Oak Ridge, Tennessee Date Published: November 2007KP 12 05 06 0 Prepared by the Carbon Dioxide Information Analysis Center

280

approved_list  

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

02-Mar-2001 02-Mar-2001 Exp # Spokesperson Title Days 763X-2 Seweryniak Studies of Sub-ms Proton and a Emitters 4 835-2 Caggiano Spectroscopy of Proton-Unbound States in 26Si - II 4 880X-2 Heinz Preparations Towards a Search for Super-Heavy Elements at ATLAS: Phase I 7 882-2 Doyle Measurement of Helium-3 to Helium-4 Ratios in Isotopically Purified Helium 3 894-2 Cullen Establishing the Deformation of 140Dy from Measurement of the Delayed Decay of the Kp = 8- Isomeric State 6 897-2 Savard Continuation of the Mass Measurement Program Along the N = Z Line with the CPT Mass Spectrometer 10 898 Davids Proton Decay of 135Tb 7 899 Woods Identification of the Astrophysical Resonance in the 19Ne(p,g)20Na Reaction 4 900 Kwok Patterning of Columnar Defects with LiGA and Heavy Ion Lithography in High Temperature Superconductors

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


281

Modeling Tools for Solid Oxide Fuel Cell Analysis  

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

Tools for Solid Oxide Fuel Tools for Solid Oxide Fuel Cell Design and Analysis Moe A Khaleel BJ Koeppel, W Liu, K Lai, KP Recknagle, EM Ryan, EV Stephens, X Sun Pacific Northwest National Laboratory Richland, WA 99352 11 th Annual SECA Workshop Pittsburgh, PA July 27-29, 2009 1 PNNL SOFC Modeling Tools SOFC-MP Stack level model for fast analysis of co/counter-flow SOFC stack performance Detailed electrochemistry model Cell level model for the investigation of secondary reactions (degradation/contamination) mechanisms within the tri-layer Component-based design and performance modeling Contact material Interconnect Glass seal 2 SOFC-MP Stack Simulation Code Recent Accomplishments Major memory improvements of 3D model to accommodate 50-cell stacks on LINUX platform. Previously, developed a 2D (or stacked

282

Mining the SDSS archive. I. Photometric redshifts in the nearby universe  

E-Print Network (OSTI)

We present a supervised neural network approach to the determination of photometric redshifts. The method was tuned to match the characteristics of the Sloan Digital Sky Survey and it exploits the spectroscopic redshifts provided by this unique survey. In order to train, validate and test the networks we used two galaxy samples drawn from the SDSS spectroscopic dataset: the general galaxy sample (GG) and the luminous red galaxies subsample (LRG). The method consists of a two steps approach. In the first step, objects are classified in nearby (ztrained on objects belonging to the two redshift ranges. Using a standard MLP operated in a Bayesian framework, the optimal architectures were found to require 1 hidden layer of 24 (24) and 24 (25) neurons for the GG (LRG) sample. The presence of systematic deviations was then corrected by interpolating the resulting redshifts. The final results on the GG dataset give a robust sigma_z = 0.0208 over the redshift range [0.01, 0.48] and sigma_z = 0.0197 and sigma_z = 0.0238 for the nearby and distant samples respectively. For the LRG subsample we find a robust sigma_z = 0.0164 over the whole range, and sigma_z = 0.0160, sigma_z = 0.0183 for the nearby and distant samples respectively. After training, the networks have been applied to all objects in the SDSS Table GALAXY matching the same selection criteria adopted to build the base of knowledge, and photometric redshifts for ca. 30 million galaxies having z<0.5 were derived. A catalogue containing photometric redshifts for the LRG subsample was also produced.

D'Abrusco Raffaele; Staiano Antonino; Longo Giuseppe; Brescia Massimo; Paolillo Maurizio; De Filippis Elisabetta; Tagliaferri Roberto

2007-03-06T23:59:59.000Z

283

Uniformly accelerated observer in a thermal bath  

E-Print Network (OSTI)

We investigate the quantum field aspects in flat spacetime for an uniformly accelerated observer moving in a thermal bath. In particular, we obtain an exact closed expression of the reduced density matrix for an uniformly accelerated observer with acceleration $a = 2\\pi T$ when the state of the quantum field is a thermal bath at temperature $T^\\prime$. We find that the density matrix has a simple form with an effective partition function $Z$ being a product, $Z = Z_T Z_{T^\\prime}$, of two thermal partition functions corresponding to temperatures $T$ and $T^\\prime$ and hence is not thermal, even when $T = T^\\prime$. We show that, even though the partition function has a product structure, the two thermal baths are, in fact, interacting systems; although in the high frequency limit $\\omega_k \\gg T$ and $\\omega_k \\gg T^\\prime$, the interactions are found to become sub-dominant. We further demonstrate that the resulting spectrum of the Rindler particles can be interpreted in terms of spontaneous and stimulated emission due to the background thermal bath. The density matrix is also found to be symmetric in the acceleration temperature $T$ and the thermal bath temperature $T^\\prime$ indicating that thermodynamic experiments alone cannot distinguish between the thermal effects due to $T$ and those due to $T^\\prime$. The entanglement entropy associated with the reduced density matrix (with the background contribution of the Davies-Unruh bath removed) is shown to satisfy, in the $\\omega_k \\gg T^\\prime$ limit, a first law of thermodynamics relation of the form $T \\delta S = \\delta E$ where $\\delta E$ is the difference in the energies corresponding to the reduced density matrix and the background Davies-Unruh bath. The implications are discussed.

Sanved Kolekar

2013-09-12T23:59:59.000Z

284

FORMERLY UTILIZED SITES REUEDIAL ACTION PROGRAM ELIMINATION REPORT  

Office of Legacy Management (LM)

REUEDIAL ACTION PROGRAM REUEDIAL ACTION PROGRAM ELIMINATION REPORT COPPERWELD STEEL COMPANY 4000 MAHONING AVENUE, N.W. WARREN. OHIO December 1991 U.S. Department of Energy Office of Environmental Restoration and Waste Management Office of Environmental Restoration Office of Eastern Area Programs CONTENTS INTRODUCTION . . . . . . . . . . . &gg . . . . . . . . . . . . . . .l BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . .l Site Function Site Description Radiological History and Status ELIMINATION ANALYSIS . . :. . . . . . : . . . . . . . . . . . .2 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . .2 ELIMINATION REPORT COPPERWELD STEEL COMPANY 1 4000 MAHONING AVENUE, N.W. WARREN, OHIO INTRODUCTION The Department of Energy (DOE) Office of Environmental Restoration has

285

Chiral Anomaly and Decay of Color Electric Field  

E-Print Network (OSTI)

Using the formula of chiral anomaly, we discuss the pair production of quarks under color electric field $\\vec{E}$ without addressing explicit formula of quark's wavefunctions. The production is assumed to occur under the effect of color magnetic field $\\vec{B}$ as well as the color electric field. We obtain the life time $t_c$ of the color electric field in the limit of $B\\gg E$. Applying it to the glasma in high-energy heavy-ion collisions, we find that $t_c\\simeq 10Q_s^{-1}$ with saturation momentum $Q_s$.

Aiichi Iwazaki

2009-04-09T23:59:59.000Z

286

Conserved genomic organisation of Group B Sox genes in insects.  

E-Print Network (OSTI)

in the midline. G-G') Lateral views of stage 13 embryos showing Sox21b expression in abdominal epidermal stripes. H-H') Ventral view of stage 14 embryos showing Sox21b expression in abdominal epidermal stripes.Page 5 of 15 (page number not for citation... of the foregut and hindgut at stage 12 (Figure 2E and 2E') with later expression in specific cells of the midline after stage 14 (Figure 2F and 2F'). Sox21b shows conserved expres- sion in abdominal epidermal stripes from stage 13 (Figure 2G to 2H...

McKimmie, Carol; Woerfel, Gertrud; Russell, Steven R

2005-05-19T23:59:59.000Z

287

DNA damage responses in the context of the cell division cycle  

E-Print Network (OSTI)

and binds to human Chk1 235 61. Strategy for the design of Rad9-h/ggMCPH1 hybrid constructs 237 LIST OF DIAGRAMS 1. Possible mechanisms of action of the CMG helicase complex during DNA unwinding Pg... helicase. Indeed, the MCM complex remains associated with the fork during S-phase and plays a role ahead of the fork as an helicase to unwind the DNA duplex, with a 3 to 5 polarity shown for the archaeal MCM (Kelman et al., 1999; Chong et al., 2000...

Giunta, Simona

2010-11-16T23:59:59.000Z

288

Methods for detection of methyl-CpG dinucleotides  

DOE Patents (OSTI)

The invention provides methods for enriching methyl-CpG sequences from a DNA sample. The method makes use of conversion of cytosine residues to uracil under conditions in which methyl-cytosine residues are preserved. Additional methods of the invention enable to preservation of the context of me-CpG dinucleotides. The invention also provides a recombinant, full length and substantially pure McrA protein (rMcrA) for binding and isolation of DNA fragments containing the sequence 5'-C.sup.MeCpGG-3'. Methods for making and using the rMcrA protein, and derivatives thereof are provided.

Dunn, John J.

2012-09-11T23:59:59.000Z

289

Methods for detection of methyl-CpG dinucleotides  

DOE Patents (OSTI)

The invention provides methods for enriching methyl-CpG sequences from a DNA sample. The method makes use of conversion of cytosine residues to uracil under conditions in which methyl-cytosine residues are preserved. Additional methods of the invention enable to preservation of the context of me-CpG dinucleotides. The invention also provides a recombinant, full length and substantially pure McrA protein (rMcrA) for binding and isolation of DNA fragments containing the sequence 5'-C.sup.MeCpGG-3'. Methods for making and using the rMcrA protein, and derivatives thereof are provided.

Dunn, John J.

2013-01-29T23:59:59.000Z

290

Exploring anomalous top interactions via the final lepton in ttbar productions/decays at hadron colliders  

E-Print Network (OSTI)

We study momentum distributions of the final-state charged lepton in ppbar/pp --> ttbar --> l^+ X (l=e or mu) at hadron colliders, i.e., Tevatron and Large Hadron Collider (LHC) in order to explore possible new-physics effects in the top-quark sector. Assuming general model-independent ttbar g + ttbar gg and tbW interactions beyond the standard model, we first derive analytical formulas for the corresponding parton-parton processes. We then compute the lepton angular, energy and transverse-momentum distributions in ppbar/pp collisions to clarify how they are affected by those anomalous couplings.

Zenro HIOKI; Kazumasa OHKUMA

2011-04-07T23:59:59.000Z

291

Cold Nuclear Matter Effects on extrinsic J/psi production at sqrt{s_{NN}}=2.76 TeV at the LHC  

E-Print Network (OSTI)

We evaluate the Cold Nuclear Matter effects on J/psi production in pPb and PbPb collisions at the current LHC energy, taking into account the gluon shadowing and the nuclear absorption. We use the complete kinematics in the underlying 2 to 2 partonic process, namely $g+g \\to \\jpsi + g$ as expected from LO pQCD. The resulting shadowing is responsible for a large J/psi suppression in pPb and PbPb, and shows a strong rapidity dependence.

E. G. Ferreiro; F. Fleuret; J. P. Lansberg; N. Matagne; A. Rakotozafindrabe

2011-01-03T23:59:59.000Z

292

Higgs Boson Property Shifts from Radion Mixing  

SciTech Connect

We discuss how mixing between the Standard Model Higgs boson, h, and the radion of the Randall-Sundrum model can lead to significant shifts in the expected properties of the Higgs boson. In particular we show that the total and partial decay widths of the Higgs, as well as the h {yields} gg branching fraction, can be substantially altered from their SM expectations, while the remaining branching fractions are modified less than {approx}< 5% for most of the parameter space volume. Precision measurements of Higgs boson properties at a Linear Collider are shown to probe a large region of the Randall-Sundrum model parameter space.

Rizzo, Thomas G.

2002-07-09T23:59:59.000Z

293

Effects of Radion Mixing on the Standard Model Higgs Boson  

SciTech Connect

We discuss how mixing between the Standard Model Higgs boson and the radion of the Randall-Sundrum model can lead to significant shifts in the expected properties of the Higgs boson. In particular we show that the total and partial decay widths of the Higgs, as well as the h {yields} gg branching fraction, can be substantially altered from their SM expectations, while the remaining branching fractions are modified less than about 5% for most of the parameter space volume. Precision measurements of Higgs boson properties at at a Linear Collider are shown to probe a large region of the Randall-Sundrum model parameter space.

Rizzo, Thomas G.

2002-09-09T23:59:59.000Z

294

Higgs hunting  

SciTech Connect

The phenomenology of the Higgs boson in the standard SU(2) x U(1) electroweak model is reviewed. We compare signatures and cross sections for various Higgs production mechanisms: (1) toponium radiative decay (xi ..-->.. H/sup 0/..gamma..); (2) gluon gluon fusion (gg ..-->.. H/sup 0/); (3) Compton-like process (gc ..-->.. H/sup 0/c); and (4) bremsstrahlungs at Z/sup 0/ resonance. It is argued that new detection techniques for heavy particle identification could be helpful in triggering the rare Higgs signals from the backgrounds.

Keung, W.Y.

1982-01-01T23:59:59.000Z

295

Infrared safe definition of jet flavor.  

E-Print Network (OSTI)

(energy) and collinear (angular) divergence. For flavour algorithms one should remember that the matrix elements for g ? qq or q ? qg (with a soft quark) have no soft divergence, but just the collinear divergence, [dkj]|M2g?qiqj(kj)| ? ?sTR 2? dEj Ei d?2... energy larger than 1TeV and the two hardest jets to have |?| < 1. Three representative channels, qq ? qq (including qq ? qq), qq ? gg and qg ? qg are shown in fig. 6, as obtained with Herwig [15]. The standard parton showering in Pythia [23] gives...

Banfi, Andrea; Salam, Gavin P; Zanderighi, Giulia

296

Structure of an n-butane monolayer adsorbed on magnesium oxide (100)  

Science Conference Proceedings (OSTI)

Neutron diffraction has been used to characterize the structure of the solid phase of the completed monolayer of n butane on the MgO(100) surface at low temperature. The monolayer is found to adopt a commensurate (7{radical}(2)x{radical}(2)R45 deg. ) structure with lattice constants a=29.47 A ring and b=4.21 A ring , P{sub 2gg} symmetry and four molecules in the unit cell. Excellent agreement with the experimental diffraction pattern is realized, using a Lorenztian profile to describe the line shape.

Arnold, T. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States); Chanaa, S.; Cook, R. E. [Department of Chemistry, Buehler Hall, University of Tennessee, Knoxville, Tennessee 37996 (United States); Clarke, S. M. [BP Institute and Department of Chemistry, University of Cambridge, Cambridge (United Kingdom); Larese, J. Z. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States); Department of Chemistry, Buehler Hall, University of Tennessee, Knoxville, Tennessee 37996 (United States)

2006-08-15T23:59:59.000Z

297

Remote generation of entanglement for individual atoms via optical fibers  

E-Print Network (OSTI)

The generation of atomic entanglement is discussed in a system that atoms are trapped in separate cavities which are connected via optical fibers. Two distant atoms can be projected to Bell-state by synchronized turning off the local laser fields and then performing a single quantum measurement by a distant controller. The distinct advantage of this scheme is that it works in a regime that $\\Delta\\approx\\kappa\\gg g$, which makes the scheme insensitive to cavity strong leakage. Moreover, the fidelity is not affected by atomic spontaneous emission.

Y. Q. Guo; H. Y. Zhong; Y. H. Zhang; H. S. Song

2008-05-29T23:59:59.000Z

298

An averaging theorem for FPU in the thermodynamic limit  

E-Print Network (OSTI)

Consider an FPU chain composed of $N\\gg 1$ particles, and endow the phase space with the Gibbs measure corresponding to a small temperature $\\beta^{-1}$. Given a fixed $Korder $\\beta^{1-a}$, $a>0$) for initial data in a set of large measure. Furthermore, the time autocorrelation function of the energy of each packet does not decay significantly for times of order $\\beta$. The restrictions on the shape of the packets are very mild. All estimates are uniform in the number $N$ of particles and thus hold in the thermodynamic limit $N\\to\\infty$, $\\beta>0$.

Alberto Maiocchi; Dario Bambusi; Andrea Carati

2013-07-26T23:59:59.000Z

299

OECD MCCI project Melt Eruption Test (MET) design report, Rev. 2. April 15, 2003.  

SciTech Connect

The Melt Attack and Coolability Experiments (MACE) program at Argonne National Laboratory addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. The Melt Coolability and Concrete Interaction (MCCI) program is pursuing separate effect tests to examine the viability of the melt coolability mechanisms identified as part of the MACE program. These mechanisms include bulk cooling, water ingression, volcanic eruptions, and crust breach. At the second PRG meeting held at ANL on 22-23 October 2002, a preliminary design1 for a separate effects test to investigate the melt eruption cooling mechanism was presented for PRG review. At this meeting, NUPEC made several recommendations on the experiment approach aimed at optimizing the chances of achieving a floating crust boundary condition in this test. The principal recommendation was to incorporate a mortar sidewall liner into the test design, since data from the COTELS experiment program indicates that corium does not form a strong mechanical bond with this material. Other recommendations included: (i) reduction of the electrode elevation to well below the melt upper surface elevation (since the crust may bond to these solid surfaces), and (ii) favorably taper the mortar liner to facilitate crust detachment and relocation during the experiment. Finally, as a precursor to implementing these modifications, the PRG recommended the development of a design for a small-scale scoping test intended to verify the ability of the mortar liner to preclude formation of an anchored bridge crust under core-concrete interaction conditions. This revised Melt Eruption Test (MET) plan is intended to satisfy these PRG recommendations. Specifically, the revised plan focuses on providing data on the extent of crust growth and melt eruptions as a function of gas sparging rate under well-controlled experiment conditions, including a floating crust boundary condition. The overall objective of MET is to determine to what extent core debris is rendered coolable by eruptive-type processes that breach the crust that rests upon the melt. The specific objectives of this test are as follows: (1) Evaluate the augmentation in surface heat flux during periods of melt eruption; (2) Evaluate the melt entrainment coefficient from the heat flux and gas flow rate data for input into models that calculate ex-vessel debris coolability; (3) Characterize the morphology and coolability of debris resulting from eruptive processes that transport melt into overlying water; and (4) Discriminate between periods when eruptions take the form of particle ejections into overlying water, leading to a porous particle bed, and single-phase extrusions, which lead to volcano-type structures.

Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

300

Historical (1850-2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols:methodology and application  

DOE Green Energy (OSTI)

We present and discuss a new dataset of gridded emissions covering the historical period (1850-2000) in decadal increments at a horizontal resolution of 0.5 in latitude and longitude. The primary purpose of this inventory is to provide consistent gridded emissions of reactive gases and aerosols for use in chemistry model simulations needed by climate models for the Climate Model Intercomparison Program #5 (CMIP5) in support of the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment report. Our best estimate for the year 2000 inventory represents a combination of existing regional and global inventories to capture the best information available at this point; 40 regions and 12 sectors were used to combine the various sources. The historical reconstruction of each emitted compound, for each region and sector, was then forced to agree with our 2000 estimate, ensuring continuity between past and 2000 emissions. Application of these emissions into two chemistry-climate models is used to test their ability to capture long-term changes in atmospheric ozone, carbon monoxide and aerosols distributions. The simulated long-term change in the Northern mid-latitudes surface and mid-troposphere ozone is not quite as rapid as observed. However, stations outside this latitude band show much better agreement in both present-day and long-term trend. The model simulations consistently underestimate the carbon monoxide trend, while capturing the long-term trend at the Mace Head station. The simulated sulfate and black carbon deposition over Greenland is in very good agreement with the ice-core observations spanning the simulation period. Finally, aerosol optical depth and additional aerosol diagnostics are shown to be in good agreement with previously published estimates.

Lamarque, J. F.; Bond, Tami C.; Eyring, Veronika; Granier, Claire; Heil, Angelika; Klimont, Z.; Lee, David S.; Liousse, Catherine; Mieville, Aude; Owen, Bethan; Schultz, Martin; Shindell, Drew; Smith, Steven J.; Stehfest, Eike; van Aardenne, John; Cooper, Owen; Kainuma, M.; Mahowald, Natalie; McConnell, J.R.; Naik, Vaishali; Riahi, Keywan; Van Vuuren, Detlef

2010-08-11T23:59:59.000Z

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301

Production of single top-quark final states at the LHC from supersymmetric FCNC interactions  

E-Print Network (OSTI)

We discuss the production of single top-quark final states by direct supersymmetric flavor-changing interactions at the LHC. The total cross section pp(gg)->t\\bar{c}+\\bar{t}c is computed at the 1-loop order within the unconstrained MSSM. We prove that SUSY-QCD effects may furnish sizeable production rates amounting up to barely 10^5 t\\bar{c}(c\\bar{t}) events per 100 fb^{-1} of integrated luminosity, in full compliance with the stringent low-energy constraints from b->s gamma. Furthermore, we show that the cooperative SUSY-EW effects can be sizeable on their own, regardless of the SUSY-QCD contribution, with maximum production rates of the order of 10^3 events per 100 fb^{-1}. Owing to the fact that FCNC production of electrically neutral heavy-quark pairs is virtually absent within the SM, we conclude that the observation of such pp(gg)->t\\bar{c}+\\bar{t}c processes at the LHC could lead to evidence of new physics - of likely supersymmetric nature.

David Lopez-Val; Jaume Guasch; Joan Sola

2008-01-16T23:59:59.000Z

302

Extracting bb Higgs Decay Signals using Multivariate Techniques  

Science Conference Proceedings (OSTI)

For low-mass Higgs boson production at ATLAS at {radical}s = 7 TeV, the hard subprocess gg {yields} h{sup 0} {yields} b{bar b} dominates but is in turn drowned out by background. We seek to exploit the intrinsic few-MeV mass width of the Higgs boson to observe it above the background in b{bar b}-dijet mass plots. The mass resolution of existing mass-reconstruction algorithms is insufficient for this purpose due to jet combinatorics, that is, the algorithms cannot identify every jet that results from b{bar b} Higgs decay. We combine these algorithms using the neural net (NN) and boosted regression tree (BDT) multivariate methods in attempt to improve the mass resolution. Events involving gg {yields} h{sup 0} {yields} b{bar b} are generated using Monte Carlo methods with Pythia and then the Toolkit for Multivariate Analysis (TMVA) is used to train and test NNs and BDTs. For a 120 GeV Standard Model Higgs boson, the m{sub h{sup 0}}-reconstruction width is reduced from 8.6 to 6.5 GeV. Most importantly, however, the methods used here allow for more advanced m{sub h{sup 0}}-reconstructions to be created in the future using multivariate methods.

Smith, W Clarke; /George Washington U. /SLAC

2012-08-28T23:59:59.000Z

303

Gluon-gluon contributions to W+ W- production and Higgs interference effects  

Science Conference Proceedings (OSTI)

In this paper we complete our re-assessment of the production of W boson pairs at the LHC, by calculating analytic results for the gg {yields} W{sup +}W{sup -} {yields} {nu}{ell}{sup +}{ell}{sup -}{bar {nu}} process including the effect of massive quarks circulating in the loop. Together with the one-loop amplitudes containing the first two generations of massless quarks propagating in the loop, these diagrams can give a significant contribution with a large flux of gluons. One of the component parts of this calculation is the production of a standard model Higgs boson, gg {yields} H and its subsequent decay, H {yields} W{sup +}({yields} {nu}{ell}{sup +})W{sup -}({yields} {ell}{sup -}{bar {nu}}). We will quantify the importance of the interference between the Higgs boson production process and the gluon-induced continuum production in the context of searches for the Higgs boson at the Tevatron and the LHC. For instance, for m{sub H} < 140 GeV the effect of the interference typically results in around a 10% reduction in the expected number of Higgs signal events. The majority of this interference is due to non-resonant contributions. Therefore cuts on the transverse mass such as those currently used by the ATLAS collaboration reduce the destructive interference to about a 1% effect. We advocate that a cut on the maximum transverse mass be used in future Higgs searches in this channel.

Campbell, John M.; Ellis, R.Keith; Williams, Ciaran

2011-07-01T23:59:59.000Z

304

Comparison between continuous stirred tank reactor extractor and soxhlet extractor for extraction of El-Lajjun oil shale  

Science Conference Proceedings (OSTI)

Extraction on El-Lajjun oil shale in a continuous stirred tank reactor extractor (CSTRE) and a Soxhlet extractor was carried out using toluene and chloroform as solvents. Solvents were recovered using two distillation stages, a simple distillation followed by a fractional distillation. Gas chromotography was used to test for the existence of trapped solvent in the yield. It was found that extraction using a CSTRE gave a 12% increase in yield on average compared with the Soxhlet extractor, and an optimum shale size of 1.0mm offered a better yield and solvent recovery for both techniques. It was also found that an optimum ratio of solvent to oil shale of 2:1 gave the best oil yield. The Soxhlet extractor was found to offer an extraction rate of 1 hour to complete extraction compared with 4 hours in a CSTRE. The yield in a CSTRE was found to increase on increase of stirring. When extraction was carried out at the boiling point of the solvents in a CSTRE, the yield was found to increase by 30% on average compared to that of extraction when the solvent was at room temperature. When toluene was used for extraction, the average amount of bitumen extracted was 0.032 g/g of oil shale and 76.4% of the solvent recovered, compared with 0.037 g/g of oil shale and 84.1% of the solvent recovered using a Soxhlet extractor.

Anabtawi, M.Z. [Univ. of Bahrain, Isa Town (Bahrain)

1996-02-01T23:59:59.000Z

305

Bulk emission by higher-dimensional black holes: almost perfect blackbody radiation  

E-Print Network (OSTI)

We study the Hawking radiation emitted into the bulk by $(D+1)$-dimensional Schwarzschild black holes. It is well-known that the black-hole spectrum departs from exact blackbody form due to the frequency dependence of the `greybody' factors. For intermediate values of $D$ ($3\\leq D\\lesssim10$), these frequency-dependent factors may significantly modify the spectrum of the emitted radiation. However, we point out that for $D\\gg1$, the typical wavelengths in the black-hole spectrum are much {\\it shorter} than the size of the black hole. In this regime, the greybody factors are well described by the geometric-optics approximation according to which they are almost frequency-independent. Following this observation, we argue that for higher-dimensional black holes with $D\\gg1$, the total power emitted into the bulk should be well approximated by the analytical formula for perfect blackbody radiation. We test the validity of this analytical prediction with numerical computations.

Shahar Hod

2011-07-05T23:59:59.000Z

306

Bulk emission by higher-dimensional black holes: almost perfect blackbody radiation  

E-Print Network (OSTI)

We study the Hawking radiation emitted into the bulk by $(D+1)$-dimensional Schwarzschild black holes. It is well-known that the black-hole spectrum departs from exact blackbody form due to the frequency dependence of the `greybody' factors. For intermediate values of $D$ ($3\\leq D\\lesssim10$), these frequency-dependent factors may significantly modify the spectrum of the emitted radiation. However, we point out that for $D\\gg1$, the typical wavelengths in the black-hole spectrum are much {\\it shorter} than the size of the black hole. In this regime, the greybody factors are well described by the geometric-optics approximation according to which they are almost frequency-independent. Following this observation, we argue that for higher-dimensional black holes with $D\\gg1$, the total power emitted into the bulk should be well approximated by the analytical formula for perfect blackbody radiation. We test the validity of this analytical prediction with numerical computations.

Hod, Shahar

2011-01-01T23:59:59.000Z

307

HIGGS BOSON PRODUCTION IN ASSOCIATION WITH BOTTOM QUARKS.  

SciTech Connect

In the Standard Model, the coupling of the Higgs boson to b quarks is weak, leading to small cross sections for producing a Higgs boson in association with b quarks. However, Higgs bosons with enhanced couplings to b quarks, such as occur in supersymmetric models for large values of tan {beta}, will be copiously produced at both the Tevatron and the LHC in association with b quarks which will be an important discovery channel. We investigate the connections between the production channels, bg {yields} bh and gg {yields} b{bar b}h, at next-to-leading order (NLO) in perturbative QCD and present results for the case with two high-p{sub T} b jets and with one high-p{sub T} b jet at both the Tevatron and the LHC. Finally, the total cross sections without cuts are compared between gg {yields} b{bar b}h at NLO and b{bar b} {yields} h at NNLO.

DAWSON, S.; CAMPBELL, J.; DITTMAIER, S.; JACKSON, C.; KRAMER, M.; MALTONI, F.; ET AL.

2003-05-26T23:59:59.000Z

308

Production of a Higgs boson plus two jets in hadronic collisions  

SciTech Connect

We consider the production of a standard model Higgs boson accompanied by two jets in hadronic collisions. We work in the limit that the top quark is much heavier than the Higgs boson and use an effective Lagrangian for the interactions of gluons with the Higgs boson. In addition to the previously computed four-gluon process, we compute the amplitudes involving two quarks, two gluons, and the Higgs boson and those involving four quarks and the Higgs boson. We exhibit the form of our results in the small-p{sub H} and factorization limits. We present numerical results for {radical}(S)=14 TeV and {radical}(S)=2 TeV. We find that the dominant processes are gg{r_arrow}ggH and qg{r_arrow}qgH with the former (latter) contributing about 60{percent} (40{percent}) of the cross section at {radical}(S)=14 TeV and the two processes each contributing about half the cross section at {radical}(S)=2 TeV. All other processes are negligible at both energies. {copyright} {ital 1997} {ital The American Physical Society}

Kauffman, R.P.; Desai, S.V.; Risal, D. [Department of Physics and Astronomy, Franklin and Marshall College, Lancaster, Pennsylvania 17604 (United States)

1997-04-01T23:59:59.000Z

309

CDF's Higgs sensitivity status  

SciTech Connect

The combined sensitivity of CDF's current Standard Model Higgs boson searches is presented. The expected 95% CL limits on the production cross section times the relevant Higgs boson branching ratios are computed for the W{sup {+-}}H {yields} {ell}{sup {+-}}{nu}b{bar b}, ZH {yields} {nu}{bar {nu}}b{bar b}, gg {yields} H {yields} W{sup +}W{sup -} W{sup {+-}}H {yields} W{sup {+-}}W{sup +}W{sup -} channels as they stand as of the October 2005, using results which were prepared for Summer 2005 conferences and a newer result form the gg {yields} H {yields} W{sup +}W{sup -} channel. Correlated and uncorrelated systematic uncertainties are taken into account, and the luminosity requirements for 95% CL exclusion, 3{sigma} evidence, and 5{sigma} discovery are computed for median experimental outcomes. A list of improvements required to achieve the sensitivity to a SM Higgs boson as quantified in the Higgs Sensitivity Working Group's report is provided.

Junk, Tom; /Illinois U., Urbana

2005-10-01T23:59:59.000Z

310

Calculation of HELAS amplitudes for QCD processes using graphics processing unit (GPU)  

E-Print Network (OSTI)

We use a graphics processing unit (GPU) for fast calculations of helicity amplitudes of quark and gluon scattering processes in massless QCD. New HEGET ({\\bf H}ELAS {\\bf E}valuation with {\\bf G}PU {\\bf E}nhanced {\\bf T}echnology) codes for gluon self-interactions are introduced, and a C++ program to convert the MadGraph generated FORTRAN codes into HEGET codes in CUDA (a C-platform for general purpose computing on GPU) is created. Because of the proliferation of the number of Feynman diagrams and the number of independent color amplitudes, the maximum number of final state jets we can evaluate on a GPU is limited to 4 for pure gluon processes ($gg\\to 4g$), or 5 for processes with one or more quark lines such as $q\\bar{q}\\to 5g$ and $qq\\to qq+3g$. Compared with the usual CPU-based programs, we obtain 60-100 times better performance on the GPU, except for 5-jet production processes and the $gg\\to 4g$ processes for which the GPU gain over the CPU is about 20.

K. Hagiwara; J. Kanzaki; N. Okamura; D. Rainwater; T. Stelzer

2009-09-29T23:59:59.000Z

311

He Led Them On  

E-Print Network (OSTI)

Isngiis ^ -: I,e.ss s , ,!a s sR !.:"5 :'!a S s xt .: s siv . . .s .: II'b R "ra ; E E .- E .S . s[ 6{ 'qg R s F; .s\\ sR b'R :,t a -_ s - :d i.: U E I t* *EFRl.r r 'r'#| F#EE E'ieEi; i,H a;g!ili*f; r:tii ag!;iiE EEg E s... gg iE $ff !E:T5gE EE:E g8";E;g;jfiqgHHEEH;EE flEiE EH F:; e t"5ee iE -E E E f,E H F'i.frfrisf ;;+i; i#,E i;s:ii:: g'E ;sitg N e gg ; gE$iE H EE E iI EirgFqli ii: s;EEi Es;$f,1iiEiE E e 5 * $= Eil i * s E : $F ; H E E ui i...

Whitehorn, John

312

Two-loop renormalization constants and high energy $2\\rightarrow 2$ scattering amplitudes in the Higgs sector of the standard model  

E-Print Network (OSTI)

We calculate the complete matrix of two-body scattering amplitudes for the scattering of longitudinally polarized gauge bosons $W_L^\\pm$, $Z_L$ and Higgs bosons to two loops in the high-energy, heavy-Higgs limit $\\sqrt{s}\\gg M_H\\gg M_W$. Use of the Goldstone boson equivalence theorem reduces the problem to one involving only the scalar fields $w^\\pm$, $z$ (the Goldstone bosons of the original theory) and the Higgs boson. Renormalization of the scattering amplitudes requires the calculation of the self-energy functions $\\Pi _i^0(M_i^2)$, the renormalization constants $Z_i$, and the bare quartic Higgs coupling $\\lambda _0$ to two loops. The results will be useful in other calculations. To facilitate the calculations, we introduce a powerful new technique for evaluating integrals over Feynman parameters in dimensional regularization which is based on a Barnes' type representation of the binomial expansion. We also collect some useful integrals which extend the tables given by Devoto and Duke.

Peter N. Maher; Loyal Durand; Kurt Riesselmann

1993-03-09T23:59:59.000Z

313

OECD MCCI project final report, February 28, 2006.  

SciTech Connect

Although extensive research has been conducted over the last several years in the areas of Core-Concrete Interaction (CCI) and debris coolability, two important issues warrant further investigation. The first issue concerns the effectiveness of water in terminating a CCI by flooding the interacting masses from above, thereby quenching the molten core debris and rendering it permanently coolable. This safety issue was investigated in the Melt Attack and Coolability Experiments (MACE) program. The approach was to conduct large scale, integral-type reactor materials experiments with core melt masses ranging up to two metric tons. These experiments provided unique, and for the most part repeatable, indications of heat transfer mechanism(s) that could provide long term debris cooling. However, the results did not demonstrate definitively that a melt would always be completely quenched. This was due to the fact that the crust anchored to the test section sidewalls in every test, which led to melt/crust separation, even at the largest test section lateral span of 1.20 m. This decoupling is not expected for a typical reactor cavity, which has a span of 5-6 m. Even though the crust may mechanically bond to the reactor cavity walls, the weight of the coolant and the crust itself is expected to periodically fracture the crust and restore contact with the melt. The fractured crust will provide a pathway for water to recontact the underlying melt, thereby allowing other debris cooling mechanisms to proceed and contribute to terminating the core-concrete interaction. Thus, one of the key aims of the current program was to measure crust strength to check the hypothesis that a corium crust would not be strong enough to sustain melt/crust separation in a plant accident. The second important issue concerns long-term, two-dimensional concrete ablation by a prototypic core oxide melt. As discussed by Foit, the existing reactor material database for dry cavity conditions is solely one-dimensional. Although the MACE Scoping Test was carried out with a two-dimensional concrete cavity, the interaction was flooded soon after ablation was initiated to investigate debris coolability. Moreover, due to the scoping nature of this test, the apparatus was minimally instrumented and therefore the results are of limited value from the code validation viewpoint. Aside from the MACE program, the COTELS test series also investigated 2-D CCI under flooded cavity conditions. However, the input power density for these tests was quite high relative to the prototypic case. Finally, the BETA test series provided valuable data on 2-D core concrete interaction under dry cavity conditions, but these tests focused on investigating the interaction of the metallic (steel) phase with concrete. Due to these limitations, there is significant uncertainty in the partitioning of energy dissipated for the ablation of concrete in the lateral and axial directions under dry cavity conditions for the case of a core oxide melt. Accurate knowledge of this 'power split' is important in the evaluation of the consequences of an ex-vessel severe accident; e.g., lateral erosion can undermine containment structures, while axial erosion can penetrate the basemat, leading to ground contamination and/or possible containment bypass. As a result of this uncertainty, there are still substantial differences among computer codes in the prediction of 2-D cavity erosion behavior under both wet and dry cavity conditions. Thus, a second key aim of the current program was to provide the necessary data to help resolve these modeling differences. In light of the above issues, the OECD-sponsored Melt Coolability and Concrete Interaction (MCCI) program was initiated at Argonne National Laboratory. The project conducted reactor materials experiments and associated analysis to achieve the following technical objectives: (1) resolve the ex-vessel debris coolability issue through a program that focused on providing both confirmatory evidence and test data for the coolability mechanisms identified in previous

Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

314

Predicting Forage Nutritive Value Using an In Vitro Gas Production Technique and Dry Matter Intake of Grazing Animals Using n-Alkanes  

E-Print Network (OSTI)

In the first experiment, forage samples (n = 39) were collected during 4 years (2006 ? 2009) from pastures grazed by Santa Gertrudis cattle at the King Ranch, TX. The in vitro gas production technique (IVGP) was performed to understand the pattern of fermentation parameters of the forage and obtain fractional digestion rate (kd) values to predict total digestible nutrients (TDN). The best nonlinear model to describe the IVGP values of the forages was the two-pool logistic equation. The passage rate (kp) of 4%/h was used.. The kp predicted by the Large Nutrient Ruminant System (LNRS) model was 3.66%/h. The average TDN was 55.9% compared to 53.8% using a theoretical equation. In the second experiment, Brahman bulls (n = 16) grazed Coastal bermudagrass pastures [Cynodon dactylon (L.) Pers.] and stocked at a moderate to low grazing pressure. Three periods of fecal collections were made within each period. Bulls were individually fed at 0700 and 1900 h of 400 g of corn gluten pellets containing C32 n-alkanes. Each period was divided in 2 sub periods in which fecal samples were collected 4 times a day (0700, 1100, 1500 and 1900 h). N-alkanes in the forage and feces were determined using gas chromatography. In the third experiment, four methods were used to estimate dry matter intake (DMI): C31 or C33 with or without adjustment for forage C32 (C31_0 and C33_0, respectively). There was a difference between morning (0700 and 1100 h) and afternoon fecal collections (1500 and 1900 h) on the predicted DMI using C31 (P = 0.0010), C33 (P = 0.0001), C31_0 (P = 0.0010), or C33_0 (P efficiency under confinement conditions does not guarantee (P < 0.0001) similar ranking under grazing conditions when using the alkane technique to determine forage DMI. In order to estimate DMI at least 5 d of fecal collection and 2 times a day of collection (0700 and 1500h) are needed to decrease the variability.

Aguiar, Andre D.

2010-05-01T23:59:59.000Z

315

Comparison of Biological and Thermal (Pyrolysis) Pathways for Conversion of Lignocellulose to Biofuels  

E-Print Network (OSTI)

Because of the limited supply of imported crude oil and environmental degradation, renewable energy is becoming commercially feasible and environmentally desirable. In this research, biological and thermal (pyrolysis) conversion pathways for biofuel production from lignocellulosic feedstocks were compared. For biological conversions of sorghum, ethanol yield was improved using M81-E variety (0.072 g/g juice) over Umbrella (0.065 g/g juice) for first-generation biomass (sorghum juice), and 0.042 g/g sorghum was obtained from the cellulosic portion of second-generation biomass. When ultrasonication was combined with hot water pretreatment, yields increased by 15% and 7% for cellulose to glucose, and hemicellulose to pentose, respectively. Ethanol yield was 10% higher when this pretreatment was combined with Accellerase 1500+XC for saccharification. Biological conversion yielded 1,600?2,300 L ethanol/ha for first-generation biomass, and 4,300?4,500 L ethanol/ha from lignocellulosic biomass. For thermal (pyrolysis) conversion of lignocellulosic switchgrass at 600 degrees C, product yield was 37% bio-oil, 26% syngas, and 25% bio-char. At 400 degrees C, product yield was 22% bio-oil, 8% syngas, and 56% bio-char. Bio-oil from pyrolysis was highly oxygenated (37 wt%). It required chemical transformation to increase its volatility and thermal stability, and to reduce its viscosity by removing objectionable oxygen, so the product could be used as transportation fuel (gasoline). As a consequence of upgrading bio-oil by catalytic hydrogenation, bio-oil oxygen decreased from 37?2 wt%, carbon increased from 50?83 wt%, hydrogen increased from 9?15 wt% and heating value increased from 36?46 MJ/kg, resulting in a fuel that was comparable to gasoline. The upgraded product passed the thermal stability test when kept under an oxygen-rich environment. The upgraded product consisted of 14.8% parrafins, 21.7% iso-parrafins, 3% napthene, 42.6% aromatics, 4.7% olefin, 4.7% DMF, 8% alcohol, and 0.6% ketone on a mass basis. Comparing the two pathways, biological conversion had 11 wt% ethanol yield from sorghum, and thermal conversion had 13 wt% gasoline yield from switchgrass. For process efficiency, thermal conversion had 35% energy loss versus 45% energy loss for biological conversions. For the biological pathway, ethanol cost was $2.5/gallon ($4/gallon, gasoline equivalent), whereas for the thermal pathway, switchgrass gasoline cost was $3.7/gallon, both with 15% before tax profit.

Imam, Tahmina 1983-

2012-12-01T23:59:59.000Z

316

United States Government Department of Energy DATE:  

Office of Legacy Management (LM)

kE FJ325.8 d& * 9 -1 kE FJ325.8 d& * 9 -1 . (8-89) ZFG fO7440 1 United States Government Department of Energy DATE: DEC 2 3 :gg3 REPLY TO ATTN OF: EM-421 (W. A. Williams, 903-8149) SUBJECT: Elimination of the Sites from the Formerly Utilized Sites Remedial Action Program TO: The File I have reviewed the attached site summaries and elimination recommendations for the following sites: e l Mitts & Merrel Co., Saginaw, Michigan l North Carolina State University, Raleigh, North Carolina l National Smelt & Refining, Cleveland, Ohio l Sutton, Steele & Steele, Dallas, Texas --------+. Norfolk Naval Station, Virginia In each case, the potential for radiological contamination above applicable guidelines is small. In each case the amounts of radioactive materials handled was small. Based on these considerations, these sites

317

HERA Upgrade Project | Superconducting Magnet Division  

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

HERA Upgrade Project HERA Upgrade Project As part of the HERA luminosity upgrade, 6 superconducting Interaction Region quadrupoles were delivered, accepted, and are in service. These 6 layer magnets were designed to include the main quadrupole focus, a skew quad, a normal and skew dipole, and a final sextupole layer. Because of the physical space constraints imposed by the existing detector region components, the DESY magnets were of necessity designed to be very compact. In addition, they are also are required to operate within the solenoidal detector fields at the collision points, so all construction materials had to be non magnetic. Two types of DESY magnets were fabricated. The first, designated as G0, was a two meter long, constant radius magnet. The second, designated GG, is a

318

Microsoft PowerPoint - Cathode contact materials PNNL.ppt [Compatibility Mode]  

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

Cathode Cathode Contact Development of Cathode Contact Materials for SOFC J.W. Stevenson, G.G. Xia, Z. Lu, X. Li, Z. Nie, T. Oh, and J.D.Templeton Pacific Northwest National Laboratory Pacific Northwest National Laboratory Richland, WA 99352 July 27-29, 2010 July 27 29, 2010 11 th Annual SECA Workshop Pittsburgh, PA Cathode/Interconnect Contact Materials Cathode/Interconnect Contact Materials Cathode Chromia-forming Protective Coating Contact layer Chromia-forming alloy interconnect 2 Cathode/Interconnect Contact Materials Cathode/Interconnect Contact Materials Requirements: High electrical conductivity to reduce interfacial electrical resistance between cathode and interconnect Contact layer Chemical and structural stability in air at SOFC operating temperature Chemical compatibility with adjacent materials (perovskite cathode,

319

Natural Analogs for Geologic Storage of CO2: An Integrated Global Research Program  

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

JAF21006.DOC JAF21006.DOC First National Conference on Carbon Sequestration U.S. Department of Energy National Energy Technology Laboratory May 15-17, 2001 Washington, D.C. Natural Analogs for Geologic Storage of CO 2 : An Integrated Global Research Program S. H. Stevens (sstevens@adv-res.com, (703) 528 8420) Advanced Resources International, Inc. 1110 N. Glebe Road, Suite 600 Arlington, VA USA 22201 703-528-8420 J. M. Pearce (jmpe@bgs.ac.uk, (0)115 9363 222) British Geological Survey Nottingham, NG12 5GG, United Kingdom. A. A. J. Rigg (a.rigg@petroleum.crc.org.au, 61-2-9490 8225) Australian Petroleum Cooperative Research Centre Sydney, NSW Australia ABSTRACT Coordinated research efforts are underway on three continents (North America, Europe,

320

NDP-030/R6 (Table 3)  

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

3. Listing of the primary and secondary fuels from the United Nations 3. Listing of the primary and secondary fuels from the United Nations Energy Statistics Database used in calculating CO2-emission estimates. The two-letter commodity code used by he United Nations for each fuel type is shown in parentheses. Gas Fuels Primary gas fuels Secondary gas fuels Natural gas (NG) Gasworks gas (GG) Coke-oven gas (OG) Refinery gas (RG) Liquid Fuels Primary liquid fuels Secondary liquid fuels Crude petroleum (CR) Aviation gasoline (AV) Natural gas liquids (GL) Plant condensate (CD) Gas-diesel oils (DL) Feedstocks (FS) Jet fuel (JF) Kerosene (KR) Liquefied petroleum gas (LP) Motor gasoline (MO) Natural gasoline (NT) Residual fuel oils (RF) Secondary nonenergy liquid fuels Bitumen/asphalt (BT) Lubricants (LU) Naphthas (NP) Petroleum coke (PK)

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


321

Microsoft Word - Katin_EDIT_Radiotransponder.doc  

National Nuclear Security Administration (NNSA)

Radio-Transponder Systems for Remote Monitoring and Identification of Radio-Transponder Systems for Remote Monitoring and Identification of Containers with Fissile Materials S.V. Katin, G.G. Bakhirev, S.L. Torokhov NIIIS, Nizhny Novgorod, Russia Summary: The report presents the main scientific and technical solutions being the basis for the radio- transponder system under development, providing remote state monitoring and identification of fissile materials and radioactive materials containers. Introduction Hazardous substance containers monitoring includes two interrelated tasks. The first is to take the stock of and monitor integrity (availability) of the containers in a storage area or vehicle during transportation. The second task is related to monitoring the containers content state (monitoring the set threshold values overriding by the

322

United States Government  

Office of Legacy Management (LM)

# Xx i' # Xx i' !325 8 I c&egJw, i&l d, 4 -1 United States Government Department of Energy DATE; AUG 3, 9 !gg4 I REPLYTo m-421 (W. A. Williams, 427-1719) sy I AlTN OF: SUBJECT: Elimination of the Sites from the Formerly Utilized Sites Remedial Action Program To' The File In 1990, with the assistance of Mr. Doug Tonkay and Ms. Nichelle Landis, I reviewed a number of sites that had formerly provided goods a&/or services to the Fernald facility as subcontractors. For 24 of these sites, recoumendations were made to eliminate them from further consideration under Formerly Utilized Sites Remedial Action Program (FUSRAP). In each case, I made or reviewed the evaluation, and, in each case, a handwritten evaluation was prepared. This is to provide a more

323

The Honorable Aaron Thompson.  

Office of Legacy Management (LM)

\ \ Departmet? of Energy Washington. DC 20585 j FEB.16 1gg5 ' ~.. The Honorable Aaron Thompson. 6th Market Streets ,, Camden, New, Jersey 08101 :., , _ I / Dear Mayor Thompson: , . . . ...: _ ,. Secretary of Energy Hazel O'Leary has,announced a new.approach to a the Department of Energy (DOE) and its communications with the pub1 support of this initiative, we are pleased to forward the enclosed , related to then former New York Shipbuilding'corp. site in your juri that performed work for DOE or its predecessor agencies.- This info provided for your information, use, and retention. DOE's Formerly Utilized Sites Remedial Action Program is responsibl identification of sites used by DOE's predecessor agencies', determi current radiological condition and, 'where it has authority; perform

324

KENNECOTT COPPER CORPORATION  

Office of Legacy Management (LM)

* * ?a, a5 fF#LG 44 it .L &=d ,,*, " ~=iL.oeL~~ KENNECOTT COPPER CORPORATION 101 EAST 42.. STREET $7/$ ,2 : -$ NEW YORU 17, N. Y. AND KOPPERS COMPAN,Y, INC. KOppERS B",'o,,,,G PITTSBURGH 19. PA. Classification Officer, OR0 October ,30, l!% ?!r. S. R. Saptile, Mmagez Oak Ridge Operations Office II. S. Atomic Enerfg Comission P. 0. BOX R. Oak Ridge, Tennessee Attention; Hr. John It. Moore, Director Contract Dltisloa Subjects Addendum (A) to F~oposal for a Feed Materials Processing Plant, dated September 27, WS6 Dear !&. Moore: In the proposal for a feed materials proce.esGg plaut for the production of uranium hexafluoride that uas submitted ~olntly by, Koppers Cm, Inc. and Kennecott Copper Corporation uuder dateof September 27, W%, we described a

325

DOE F  

Office of Legacy Management (LM)

1325.8. (8-89) EFO IO?-90) United States Government Department of Energy memorandum _._ ._, \\--C' - ,, 0, DATE: AUG 3, 9 !gg4 \c. -7 REPLY TO AlTN OF: Eli-421 (U. A. Williillas, 427-1719) SUBJECT: Elimination of the Sites from the Formerly Utilized Sites Remedial Actieu Program To' The File In 1990, with the assistance of Mr. Doug Tonkay and Ms. Michelle Landis, I reviewed a number of sites that had formerly provided goods and/or services to the Fernald facility as subcontractors. For 24 of .these sites, recomaendations were made to eliminate them from further consideration under Formerly Utilized Sites Remedial Action Progrm (FUSRAP). In each case, I made or reviewed the evaluation, and, in each case, a handwritten evaluation was prepared. This is to provide a more

326

DESIGNATION SURVEY ADDENDUM REPORT II COMBUSTION ENGINEERING SITE  

Office of Legacy Management (LM)

,111 ,111 DESIGNATION SURVEY ADDENDUM REPORT II COMBUSTION ENGINEERING SITE *I W INDSOR, CONNECTICUT 111 E. W . ABELQUIST Prepared for the Office of Environmental Restoration U.S. Department of Energy I- II I- .:jj;jiE// .:::=::::: .ipij!li' ,:::i::.:. ..::I::::/. ,:ii~iiiiai, ..' iiiiiiiiii!!liiii~~~~,~:~:. ~i!i.~iii~' :' -' +g?' gg;; ,- ZY :i/ .:;i" .:!! .:::a .(/i?j i:/i;jl? I!kr ' -:~i~jg~;...,.;, ..,::&Si! :(j)//ji//(!: 3.. :jijiiiiiiqi:wi l~,. ,,v..::;:~/j~B/; g#;$ .;::::::::::! :::::::::: ::j/j j/i; :(/;;I . . :/:jij; ,:j:,i/; ::::::: ,i/j//:j ;igg;ij iii:::: ,;(iii$ :::::i:ii. ,,,,,, :i.;ifi;iuij;; ,,:,: ii ,,:::::::::::: .:zy,:l::... Lb. .::i:::. .,:.:::;:. ](i:iii:;!! :.:::::::p "'.'j?'~ fix&$ .ii .:::i .::i;;!jg#ggi& i///jjji_

327

CARBON FLUX TO THE ATMOSPHERE FROM LAND-USE CHANGES: 1850 TO 1990 (APPENDIX  

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

D: FULL LISTING OF NDP050.DAT (FILE 2) D: FULL LISTING OF NDP050.DAT (FILE 2) The following is a full listing of ascii file ndp050.dat (File 2), which is also provided, in binary spreadsheet format, as file ndp050.wk1 (File 3). This file lists the estimated net flux of carbon, in units of 1000 Gg of carbon (1 gigagram = 109 g), to the atmosphere from land-use change, from 1850 through 1990, by year and by region, along with the global totals. The values in this listing replace the values in files netflux.* in Houghton and Hackler (1995), the previous version of this database. Year North South and Europe North Tropical Former China South and Pacific TOTAL America Central Africa and Africa Soviet Southeast Developed FLUX America Middle East Union Asia Region

328

Slide 1  

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

Tensile Tester Tensile Tester Device: Tensile Tester Use: In-situ transmission SAXS studies of polymer networks under dynamic strain Capacity: Extension rate E: 0.001 mm s -1 < E < 25 mm s -1 ; Strain capability l: 0 % < l < 300% Oven Temp T: 25°C < T < 100°C ±2°C l = 0% l = 300% Showcase Project: Stereoblock Elastomeric Polypropylene in Dynamic Strain W. Wiyatno, J. A. Pople, A.P. Gast, R.M. Waymouth, G.G. Fuller Unstretched elastomeric polypropylene (ePP) reveals a crystalline phase of the R -form isotactic polypropylene (i-PP). (Right top) Under tensile stretching, high-tacticity fractions contribute to the equatorial and off- axis diagonal scatterings, revealing molecular- scale orientation parallel to the strain axis and crystalline phase transformation from the R -

329

Definition: Acoustic Televiewer | Open Energy Information  

Open Energy Info (EERE)

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

330

ANALYTICAL DATA SHEET ANALYTICAL DEPT. - HEALTH Al\rD SAFETY DlVlSlON  

Office of Legacy Management (LM)

em IVIL, u-3 em IVIL, u-3 1' 1L, I -' I ANALYTICAL DATA SHEET ANALYTICAL DEPT. - HEALTH Al\rD SAFETY DlVlSlON 1956 1. H.# fL22 Industrial Hygiene or Medical Dept. Sample Nor& 3 Date Collected- 5117 by --Route to CES CES r Location IQJKER-PEMJNS Co- Type of Sample-waternalyzed for F Alpha Remarks -&I GG -- u - Beta Samples of water discharged to river during Steam clean- No, Ra ing of equipment. Oil PH Be Th Sample No. Hour Sample Description (RT Please analyze for gm/U/gal. BP-1 P- RO-Kneader BP-2 K- N-Kneader BP-3 Omera Feeder - __-- .___ -- i ___- ------I - 1 I . ----.--- - ------ .-___ _- I I - 3" - 1 ' : i ' Nt! w-d Analytical Chemistry Section: - Date Received 5-21-56 bY %b. Date Reported 5-2 Z-56 by&b. Method of Analysis Fluorimeter

331

Pair creation by a photon in an electric field  

E-Print Network (OSTI)

The process of pair creation by a photon in a constant and homogeneous electric field is investigated basing on the polarization operator in the field. The total probability of the process is found in a relatively simple form. At high energy the quasiclassical approximation is valid. The corrections to the standard quasiclassical approximation (SQA) are calculated. In the region relatively low photon energies, where SQA is unapplicable, the new approximation is used. It is shown that in this energy interval the probability of pair creation by a photon in electric field exceeds essentially the corresponding probability in a magnetic field. This approach is valid at the photon energy much larger than "vacuum" energy in electric field: $\\omega\\gg eE/m$. For smaller photon energies the low energy approximation is developed. At $\\omega\\ll eE/m$ the found probability describes the absorption of soft photon by the particles created by an electric field.

V. N. Baier; V. M. Katkov

2009-12-29T23:59:59.000Z

332

MECHANICAL PROPERTY AND FORMABILITY STUDIES ON UNALLOYED PLUTONIUM  

SciTech Connect

The effect of temperature and testing speed on the tension and compression properties of unalloyed plutouium was studied in the alpha , beta , gamma , and delta phases. Compressive formability data were obtained for a load of 100,000 lbs in the aforementioned phases. In addition, preliminary creep, tension impact, and torsion data for alpha -phase plutonium are reported. Extrusion constants and pressures for the beta , gamma , and delta phases were obtained. The roomtemperature tension and compression properties of the beta - and #gg-extruded plutonium were determined. Metallo graphic studies were made to determine the effect of tension, compression, and extrusion, in the indicated phases, on the microstructure of as-cast plutonium. (auth)

Gardner, H.R.; Mann, I.B.

1959-12-01T23:59:59.000Z

333

On the Chvtal-Erd?s triangle game  

E-Print Network (OSTI)

Given a graph G and positive integers n and q, let G(G; n, q) be the game played on the edges of the complete graph Kn in which the two players, Maker and Breaker, alternately claim 1 and q edges, respectively. Makers goal is to occupy all edges in some copy of G; Breaker tries to prevent it. In their seminal paper on positional games, Chvtal and Erd?s proved that in the game G(K3; n, q), Maker has a winning strategy if q Breaker has a winning strategy. In this note, we improve the latter of these bounds by describing a randomized strategy that allows Breaker to win the game G(K3; n, q) whenever q ? (2 ? 1/24) ? n. Moreover, we provide additional evidence supporting the belief that this bound can be further improved to ( ? 2 + o(1)) ? n. 1

Jzsef Balogh; Wojciech Samotij

2010-01-01T23:59:59.000Z

334

Threshold corrections in bottom and charm quark hadroproduction at next-to-next-to-leading order.  

E-Print Network (OSTI)

ar X iv :h ep -p h/ 04 01 05 6v 1 9 Ja n 20 04 Cavendish-HEP-04/01 LBNL-54251 Threshold corrections in bottom and charm quark hadroproduction at next-to-next-to-leading order Nikolaos Kidonakisa and Ramona Vogtb aCavendish Laboratory, University... be either qq or gg. A more detailed discussion of the kinematics can be found in Ref. [2]. In 1PI kinematics, a single heavy quark is identified so that i(pa) + j(pb) ?? Q(p1) +X[Q](p2) (2.1) where Q is the identified bottom or charm quark of mass m and X...

Kidonakis, Nikolaos; Vogt, Ramona

335

Borexino: A real time liquid scintillator detector for low energy solar neutrino study  

E-Print Network (OSTI)

Borexino is a large unsegmented calorimeter featuring 300 tons of liquid scintillator, contained in a 8.5 meter nylon vessel, viewed by 2200 PMTs. The main goal of Borexino is the study, in real time, of low energy solar neutrinos, and in particular, the monoenergetic neutrinos coming from $^7Be$, which is one of the missing links on the solar neutrino problem. The achievement of high radiopurity level, in the order of $10^{-16} g/g$ of U/Th equivalent, necessary to the detection of the low energy component of the solar neutrino flux, was proved in the Borexino prototype: the Counting Test Facility. The detector is located underground in the Laboratori Nazionali del Gran Sasso in the center of Italy at 3500 meter water equivalent depth. In this paper the science and technology of Borexino are reviewed and its main capabilities are presented.

Lino Miramonti

2002-06-25T23:59:59.000Z

336

Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape  

SciTech Connect

We show that combining a direct measurement of the Higgs total width from the H{yields}ZZ{yields}4l lineshape with Higgs signal rate measurements allows Higgs couplings to be extracted in a model-independent way from CERN LHC data. Using existing experimental studies with 30 fb{sup -1} at one detector of the 14 TeV LHC, we show that the couplings squared of a 190 GeV Higgs to WW, ZZ, and gg can be extracted with statistical precisions of about 10%, and a 95% confidence level upper limit on an unobserved component of the Higgs decay width of about 22% of the standard model Higgs width can be set. The method can also be applied for heavier Higgs masses.

Logan, Heather E. [Carleton University, Ottawa, Ontario K1S 5B6 (Canada); Salvail, Jeff Z. [University of Ottawa, Ottawa, Ontario K1N 6N5 (Canada)

2011-10-01T23:59:59.000Z

337

Magnetized GRB outflow model: weak reverse shock emission and short energy transfer timescale  

E-Print Network (OSTI)

We show that the absence of the bright optical flashes in most {\\it Swift} Gamma-ray Burst (GRB) afterglows can be explained, if the reverse shock region is magnetized with a $\\sigma \\sim 1$, or the emission spectrum of the electrons accelerated in the mildly magnetized ($0.1magnetized outflow is sub-relativistic, where $\\sigma$ is the ratio of the magnetic energy flux to the particle energy flux. We also find that for $\\sigma\\gg 1$, the energy transfer between the magnetized ejecta and the forward shock may be too quick to account for the shallow decline phase that is well detected in many {\\it Swift} GRB X-ray afterglows.

Yi-Zhong Fan

2008-08-05T23:59:59.000Z

338

Higgs Searches  

SciTech Connect

We present the status and prospects of Higgs searches at the Tevatron and the LHC. Results from the Tevatron are using up to 5 fb{sup -} of data collected with the CDF and D0 detectors. The major contributing processes include associated production (WH {yields} l{nu}bb, ZH {yields} {nu}{nu}bb, ZH {yields} llbb) and gluon fusion (gg {yields} H {yields} WW{sup (*)}). Improvements across the full mass range resulting from the larger data sets, improved analyses techniques and increased signal acceptance are discussed. Recent results exclude the SM Higgs boson in a mass range of 160 < m{sub H} < 170 GeV. Searches for the neutral MSSM Higgs boson in the region 90 < m{sub A} < 200 GeV exclude tan {beta} values down to 30 for several benchmark scenarios.

Peters, Krisztian

2009-11-01T23:59:59.000Z

339

Parton distributions for the LHC.  

E-Print Network (OSTI)

.01 ep? jet +X ??g ? qq g 0.01 . x . 0.1 pp? jet +X gg, qg, qq? 2j g, q 0.01 . x . 0.5 pp? (W ? ??)X ud?W, ud?W u, d, u, d x & 0.05 pp? (Z ? ?+??)X uu, dd? Z d x & 0.05 Table 1: The main processes included in the current global PDF analysis... , for example, at O(?S) gives for F2(x,Q2): CFF,n,(1)2,g (Q2/m2H) = C VF,n+1,(0) 2,HH (Q2/m2H)? P (0)qg ln(Q2/m2H) + C VF,n+1,(1) 2,g (Q2/m2H). (22) The GM-VFNS coefficient functions, CVF,nfi,j , are constrained to tend to the massless limits for Q2 ? m2H...

Martin, A D; Stirling, W James; Thorne, Robert S; Watt, G

340

Remarks on double Higgs boson production by gluon fusion at threshold  

E-Print Network (OSTI)

The amplitude of double Higgs boson production by the gluon fusion, $gg \\to hh$, is known to be small due to cancellation between the graphs with the boson trilinear coupling and those with the coupling to the top quark. For this reason a study of this process was suggested as a sensitive probe of the Higgs sector nonlinearity. We calculate in a closed analytical form this amplitude at the threshold of the two bosons, where the cancellation is the strongest, and discuss the origin of the small value of the amplitude. We also note that the cancellation in the double boson production is in fact a part of a more general phenomenon of suppression of similar threshold amplitudes for multiple boson production, which, although not directly relevant to the actual top quark and the Higgs boson, can be useful in other studies.

Xin Li; M. B. Voloshin

2013-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "gg mace kp" 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

Dark Energy in the Dark Ages  

E-Print Network (OSTI)

Non-negligible dark energy density at high redshifts would indicate dark energy physics distinct from a cosmological constant or ``reasonable'' canonical scalar fields. Such dark energy can be constrained tightly through investigation of the growth of structure, with limits of \\la2% of total energy density at z\\gg1 for many models. Intermediate dark energy can have effects distinct from its energy density; the dark ages acceleration can be constrained to last less than 5% of a Hubble e-fold time, exacerbating the coincidence problem. Both the total linear growth, or equivalently \\sigma_8, and the shape and evolution of the nonlinear mass power spectrum for zenergy behavior over the entire range z=0-1100.

Eric V. Linder

2006-03-21T23:59:59.000Z

342

Collinear and soft-gluon corrections to Higgs production at next-to-next-to-next-to-leading order  

SciTech Connect

I present analytical expressions for the collinear and soft-gluon corrections to Higgs production via the process bb{yields}H as well as gg{yields}H through next-to-next-to-next-to-leading order (NNNLO). The soft corrections are complete, while the collinear corrections include leading and some subleading logarithms. Numerical results at the Tevatron and the CERN LHC are presented, primarily for bb{yields}H. It is shown that the collinear terms greatly improve the soft and virtual approximation at next-to-leading order and next-to-next-to-leading order, especially when subleading terms are included. The NNNLO collinear and soft corrections provide significant enhancements to the total cross section. I also provide expressions for the collinear and soft corrections through NNNLO for the related Drell-Yan process.

Kidonakis, Nikolaos [Kennesaw State University, Physics 1202, 1000 Chastain Road, Kennesaw, Georgia 30144-5591 (United States)

2008-03-01T23:59:59.000Z

343

Extent of differential allelic expression of candidate breast cancer genes is similar in blood and breast  

E-Print Network (OSTI)

lymphocytes), polymorpho- nuclear cells and red blood cells, we compared the allelic expression ratios in cDNA extracted from total mononuclear cells from 59 healthy unrelated donors, with those obtained for pattern (cis- regulation in LD with tSNP or not... 0 20 00 40 00 60 00 BRCA1 Le ve l o f e xp re ss io n in L C L p=0.76 TT CT CC n=5 n=14 n=1 AA CA CC 70 0 80 0 90 0 10 00 BRCA2 Le ve l o f e xp re ss io n in b re as t p=0.58 n=36 n=39 n=11 AA AG GG 0 50 0 10 00 15 00 20 00 C1qA Le ve l o f e...

Maia, Ana-Teresa; Spiteri, Inmaculada; Lee, Alvin J X; O'Reilly, Martin; Jones, Linda; Caldas, Carlos; Ponder, Bruce A J

2009-12-10T23:59:59.000Z

344

Modelling charge transfer reactions with the frozen density embedding formalism  

SciTech Connect

The frozen density embedding (FDE) subsystem formulation of density-functional theory is a useful tool for studying charge transfer reactions. In this work charge-localized, diabatic states are generated directly with FDE and used to calculate electronic couplings of hole transfer reactions in two {pi}-stacked nucleobase dimers of B-DNA: 5{sup '}-GG-3{sup '} and 5{sup '}-GT-3{sup '}. The calculations rely on two assumptions: the two-state model, and a small differential overlap between donor and acceptor subsystem densities. The resulting electronic couplings agree well with benchmark values for those exchange-correlation functionals that contain a high percentage of exact exchange. Instead, when semilocal GGA functionals are used the electronic couplings are grossly overestimated.

Pavanello, Michele [Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden (Netherlands); Neugebauer, Johannes [Institute for Physical and Theoretical Chemistry, Technische Universitaet Braunschweig, Hans-Sommer-Strasse 10, 38106 Braunschweig (Germany)

2011-12-21T23:59:59.000Z

345

In situ global method for measurement of oxygen demand and mass transfer  

DOE Green Energy (OSTI)

Two aerobic microorganisms, Saccharomycopsis lipolytica and Brevibacterium lactofermentum, have been used in a study of mass transfer and oxygen uptake from a global perspective using a closed gas system. Oxygen concentrations in the gas and liquid were followed using oxygen electrodes, and the results allowed for easy calculation of in situ oxygen transport. The cell yields on oxygen for S. lipolytica and B. lactofermentum were 1.01 and 1.53 g/g respectively. The mass transfer coefficient was estimated as 10 h{sup {minus}1} at 500 rpm for both fermentations. The advantages with this method are noticeable since the use of model systems may be avoided, and the in situ measurements of oxygen demand assure reliable data for scale-up.

Klasson, K.T. [Oak Ridge National Lab., TN (United States). Chemical Technology Div.; Lundbaeck, K.M.O.; Clausen, E.C.; Gaddy, J.L. [Univ. of Arkansas, Fayetteville, AR (United States). Dept. of Chemical Engineering

1997-05-01T23:59:59.000Z

346

Comparison of NNLO DIS scheme splitting functions with results from exact gluon kinematics at small x.  

E-Print Network (OSTI)

result such that the complete non-singlet coefficient is negative at small x. However, it is not divergent as x? 0 so that convolution with a suitable non-singlet test function 7 05000 10000 10 -5 10 -4 10 -3 10 -2 10 -1 1 x P +(2) ns 0 5000 10000 15000... -5 10 -4 10 -3 10 -2 10 -1 1 x x P(2)gg -20000 -10000 0 10000 10 -5 10 -4 10 -3 10 -2 10 -1 1 x x P(2)qg -10000 -5000 0 10 -5 10 -4 10 -3 10 -2 10 -1 1 x x P(2)gq Figure 3: The singlet splitting functions in the DIS (solid) and MS schemes (dashed...

White, C D; Thorne, Robert S

347

Lepton flavor violating Higgs bosons and {tau}{yields}{mu}{gamma}  

SciTech Connect

We update phenomenological constraints on a two Higgs doublet model with lepton flavor nonconserving Yukawa couplings. We review that tan{beta} is ambiguous in such 'type III' models, and define it from the {tau} Yukawa coupling. The neutral scalars {phi} could be searched for at hadron colliders in {phi}{yields}{tau}{mu} and are constrained by the rare decay {tau}{yields}{mu}{gamma}. The Feynman diagrams for the collider process, with Higgs production via gluon fusion, are similar to the two-loop ''Barr-Zee'' diagrams, which contribute to {tau}{yields}{mu}{gamma}. Some ''tuning'' is required to obtain a collider cross section of order the standard model expectation for {sigma}(gg{yields}h{sub SM{yields}{tau}}{sup +{tau}-}), while agreeing with the current bound from {tau}{yields}{mu}{gamma}.

Davidson, Sacha; Grenier, Gerald [IPNL, Universite de Lyon, Universite Lyon 1, CNRS/IN2P3, 4 rue E. Fermi 69622 Villeurbanne cedex (France)

2010-05-01T23:59:59.000Z

348

Lepton flavour violating Higgs and tau to mu gamma  

E-Print Network (OSTI)

We update phenomenological constraints on a Two Higgs Doublet Model with lepton flavour non-conserving Yukawa couplings. We review that $\\tan \\beta$ is ambiguous in such "Type III" models, and define it from the $\\tau$ Yukawa coupling. The neutral scalars $\\phi$ could be searched for at hadron colliders in $ \\phi \\to \\tau \\bar{\\mu}$, and are constrained by the rare decay $\\tau \\to \\mu \\gamma$. The Feynman diagrams for the collider process, with Higgs production via gluon fusion, are similar to the two-loop "Barr-Zee" diagrams which contribute to $\\tau \\to \\mu \\gamma$. Some "tuning" is required to obtain a collider cross-section of order the Standard Model expectation for $\\sigma (gg \\to h_{SM} \\to \\tau^+ \\tau^-)$, while agreeing with the current bound from $\\tau \\to \\mu \\gamma$.

Sacha Davidson; Gerald Grenier

2010-01-04T23:59:59.000Z

349

The Honorable Peter J. Sferrazza  

Office of Legacy Management (LM)

Departnjetit of ,Ehergy ' ' ; Departnjetit of ,Ehergy ' ' ; /~, Washington, DC 20585 ,. z;iN 1; ,:;gg' i. ,, The Honorable Peter J. Sferrazza -490 South.Center Street '. ' .. , j 0 m b,: 0 ".' ..' ,' . Reno, Nevada 89501 .' Dear Mayor'sferrazza: . .,, . .(. ,I .' Secretary of Energy' Wazel O'Leary has,announced ,a'new approach to openness:in the bepartment,of Energy (DOE). and its communications~with,the p.ublic. In support of this' initiative, we' are pleased to forward the enclosed information . : related to the former U.S;"Bureau of Mines site.in your-jurisdiction that performed work for DOE or its predecessor agencies. This information is, -provided foryour information, use, and retenti,on. . DOE's~:Formdrly Utilized Sites Remedial Action Program is responsible'

350

The Honorable Gene Dean  

Office of Legacy Management (LM)

Energy' .' Energy' .' Washington, DC 20585 DE! 14 1gg4 The Honorable Gene Dean \ P.O. Box 1659~ L Huntington, West Virginia 25717 _ ',.. : Dear Mayor Dean: Secretary of Energy Hazel O'Leary has'announced,a new approach ,to openness in the'Department of Energy (DOE) and its communications with the public. In support of this in.itiative, we are pleased,to forward the..enclosed information related to the former Reduction Pilot Plant sitein your jurisdiction that performed work for DOE predecessor agencies. This information is provided.for your information, use,.band retention., DDE's Formerly Utilized Sites Remedial.Action Program is responsible for identification of sitesused by DOE's predecessor agencies, determini,ng theirs current radiological condition and, where it has authority, performing

351

BCL2 major breakpoint region (mbr) may specify an origin of replication  

Science Conference Proceedings (OSTI)

We have described a minisatellite consensus signal, GC[A/T]GG[A/T]GG, which resembles the prokaryotic activator of recombination, {chi}. The consensus appears frequently at the breakpoints of oncogene translocations, especially those in which the V(D)J recombinase has been implicated. We have investigated this relationship by examining the breakpoint positions and DNA sequence of many mbr translations from human follicular lymphomas. Breakpoints occur in three, evenly-spaced clusters 14-18 bp wide and 50 bp apart; the first cluster begins at the first base 3{prime} to the {chi} signal. At the end of cluster 3, translocations abruptly decline in frequency. We now report that this region is characterized by multiple binding sites for both single- and double-strand DNA binding proteins. Furthermore, the binding sites immediately flank clusters 1 and 3, thus defining the region at risk for translocation. The two single-strand binding proteins, one each for the sense and anti-sense strand of BCL2, bind the {chi} signal that marks the onset of translocation. The second binding site, which begins at the 3{prime} flank of cluster 3, extends a further 80 bp downstream and is absolutely required for the interaction of the mbr with factor(s) which can denature the target DNA in a cell-specific fashion. This process requires energy, as complex formation is inhibited by ATP{gamma}S. One of the two ssDNA binding proteins and, possibly, the helicase activity are expressed in a cell-cycle-dependent fashion. Finally, helical stability studies of the helicase binding region yield a profile comparable to those previously defined for several viral, yeast, and bacterial origins of replication. These studies indicate that BCL2 translocation may reflect (1) a requirement for removing a replication origin from the gene to promote lymphomagenesis and/or (2) the recombinogenic nature of such structures.

DiCroce, P.A.; Bailey, S.; Hagins, W.C. [Tufts-New England Medical Center, Boston, MA (United States)] [and others

1994-09-01T23:59:59.000Z

352

PURIFICATION OF IRIDIUM BY ELECTRON BEAM MELTING  

Science Conference Proceedings (OSTI)

The purification of iridium metal by electron beam melting has been characterized for 48 impurity elements. Chemical analysis was performed by glow discharge mass spectrographic (GDMS) analysis for all elements except carbon, which was analyzed by combustion. The average levels of individual elemental impurities in the starting powder varied from 37 g/g to 0.02 g/g. The impurity elements Li, Na, Mg, P, S, Cl, K, Ca, Mn, Co, Ni, Cu, Zn, As, Pd, Ag, Cd, Sn, Sb, Te, Ba, Ce, Tl, Pb, and Bi were not detectable following the purification. No significant change in concentration of the elements Ti, V, Zr, Nb, Mo, and Re was found. The elements B, C, Al, Si, Cr, Fe, Ru, Rh, and Pt were partially removed by vaporization during electron beam melting. Langmuir's equation for ideal vaporization into a vacuum was used to calculate for each impurity element the expected ratio of impurity content after melting to that before melting. Equilibrium vapor pressures were calculated using Henry's law, with activity coefficients obtained from published data for the elements Fe, Ti, and Pt. Activity coefficients were estimated from enthalpy data for Al, Si, V, Cr, Mn, Co, Ni, Zr, Nb, Mo, and Hf and an ideal solution model was used for the remaining elements. The melt temperature was determined from measured iridium weight loss. Excellent agreement was found between measured and calculated impurity ratios for all impurity elements. The results are consistent with some localized heating of the melt pool due to rastering of the electron beam, with an average vaporization temperature of 3100 K as compared to a temperature of 2965 K calculated for uniform heating of the melt pool. The results are also consistent with ideal mixing in the melt pool.

Ohriner, Evan Keith [ORNL

2008-01-01T23:59:59.000Z

353

What's New in the Computational Biology Section  

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

What's New? What's New? Kane, SR, Chakicherla, AY, Chain, PSG, Schmidt, R, Shin, MW, Legler, TC, Scow, KM, Larimer, FW, Lucas, SM, Richardson, PM, and Hristova, KR. (2007). Whole-Genome Analysis of the Methyl tert-Butyl Ether-Degrading Beta-Proteobacterium Methylibium petroleiphilum PM1. J. Bacteriol. 189(5): 1931-1945. PubMed Scott KM, Sievert SM, Abril FN, Ball LA, Barrett CJ, Blake RA, Boller AJ, Chain PS, Clark JA, Davis CR, Detter C, Do KF, Dobrinski KP, Faza BI, Fitzpatrick KA, Freyermuth SK, Harmer TL, Hauser LJ, Hugler M, Kerfeld CA, Klotz MG, Kong WW, Land M, Lapidus A, Larimer FW, Longo DL, Lucas S, Malfatti SA, Massey SE, Martin DD, McCuddin Z, Meyer F, Moore JL, Ocampo LH, Paul JH, Paulsen IT, Reep DK, Ren Q, Ross RL, Sato PY, Thomas P, Tinkham LE, Zeruth GT. (2006). The Genome of Deep-Sea Vent Chemolithoautotroph Thiomicrospira crunogena XCL-2. PLoS Biol. 4(12): e383. PubMed

354

Part I--A Rational Aerodynamic Design Procedure  

E-Print Network (OSTI)

'The design of a turbine stage is described in which all leading parameters (stage loading, flow coefficient, pitch/chord ratio, blade profile shape and aspect ratio) have been selected conservatively to accord with current ideas for ensuring a reasonably high level of aerodynamic efficiency. From consideration of the influence of stage loading KpAT V~ U,2, flow coefficient ~ and rotor exit swirl angle c ~ 3, the stage design was selected such that these parameters were 1.15, 0.65 and 10 degrees respectively. At the design speed of U ~ = 34 the resulting stage pressure ratio is approximately 1.65. Such a stage duty is 'light ' by aero engine standards but very comparable to much industrial gas turbine design practice. Blade spacing and profile shapes are 'finally selected in such a way as to preclude severe opposing pressure gradients on the suction surface which might result in local separation of the boundary layer from the blade surfaces. The methods applied and described for predicting blade surface velocities are simple and approximate only, and might readily be imitated by designers not wishing or able to exploit more elaborate and complex digital techniques.

M. No; D. J. L. Smith; I. H. Johnston; D. J. L. Smith; D. J. Fullbrook; D. J. L. Smith; I. H. Johnston

1967-01-01T23:59:59.000Z

355

Complex Orthogonal Designs with Forbidden $2 \\times 2$ Submatrices  

E-Print Network (OSTI)

Complex orthogonal designs (CODs) are used to construct space-time block codes. COD $\\mathcal{O}_z$ with parameter $[p, n, k]$ is a $p \\times n$ matrix, where nonzero entries are filled by $\\pm z_i$ or $\\pm z^*_i$, $i = 1, 2,..., k$, such that $\\mathcal{O}^H_z \\mathcal{O}_z = (|z_1|^2+|z_2|^2+...+|z_k|^2)I_{n \\times n}$. Define $\\mathcal{O}_z$ an M-type COD if and only if $\\mathcal{O}_z$ does not contain submatrix ${pmatrix} \\pm z_j & 0 \\ 0 & \\pm z^*_j {pmatrix}$ or ${pmatrix} \\pm z^*_j & 0 \\ 0 & \\pm z_j {pmatrix}$. It is already known that, all CODs with maximal rate, i.e., maximal $k/p$, are of M-type. In this paper, we determine all achievable parameters $[p, n, k]$ of M-type COD, as well as all their possible structures. The existence of parameters is proved by explicit-form constructions. New M-type CODs with parameters $[p,n,k]=[\\binom{n}{w-1}+\\binom{n}{w+1}, n, \\binom{n}{w}], $ for $0 \\le w \\le n$, are constructed, which demonstrate the possibility of sacrificing code rate to reduce dec...

Li, Yuan

2011-01-01T23:59:59.000Z

356

Biological and Environmental Research Program at Oak Ridge National Laboratory, FY 1992--1994  

SciTech Connect

This report is the 1992--1994 Program Director`s Overview Report for Oak Ridge National Laboratory`s (ORNL`s) Biological and Environmental Research (BER) Program, and as such it addresses KP-funded work at ORNL conducted during FY 1991 and in progress during FY 1992; it also serves as a planning document for the remainder of FY 1992 through FY 1994. Non-BER funded work at ORNL relevant to the mission of OHER is also discussed. The second section of the report describes ORNL facilities and resources used by the BER program. The third section addresses research management practices at ORNL. The fourth, fifth, and sixth sections address BER-funded research in progress, program accomplishments and research highlights, and program orientation for the remainder of FY 1992 through FY 1994, respectively. Work for non-BER sponsors is described in the seventh section, followed by a discussion of significant near and long-term issues facing BER work at ORNL in the eighth section. The last section provides a statistical summary of BER research at ORNL. Appendices supplement the above topics with additional detail.

Not Available

1992-01-01T23:59:59.000Z

357

Biological and Environmental Research Program at Oak Ridge National Laboratory, FY 1992--1994  

SciTech Connect

This report is the 1992--1994 Program Director's Overview Report for Oak Ridge National Laboratory's (ORNL's) Biological and Environmental Research (BER) Program, and as such it addresses KP-funded work at ORNL conducted during FY 1991 and in progress during FY 1992; it also serves as a planning document for the remainder of FY 1992 through FY 1994. Non-BER funded work at ORNL relevant to the mission of OHER is also discussed. The second section of the report describes ORNL facilities and resources used by the BER program. The third section addresses research management practices at ORNL. The fourth, fifth, and sixth sections address BER-funded research in progress, program accomplishments and research highlights, and program orientation for the remainder of FY 1992 through FY 1994, respectively. Work for non-BER sponsors is described in the seventh section, followed by a discussion of significant near and long-term issues facing BER work at ORNL in the eighth section. The last section provides a statistical summary of BER research at ORNL. Appendices supplement the above topics with additional detail.

Not Available

1992-01-01T23:59:59.000Z

358

A NEW CEMP-s RR LYRAE STAR  

SciTech Connect

We show that SDSS J170733.93+585059.7 (hereafter SDSS J1707+58), previously identified by Aoki and collaborators as a carbon-enhanced metal-poor star (with s-process-element enhancements, CEMP-s), on the assumption that it is a main-sequence turnoff star, is the RR Lyrae star VIII-14 identified by the Lick Astrograph Survey. Revised abundances for SDSS J1707+58 are [Fe/H] = -2.92, [C/Fe] = +2.79, and [Ba/Fe] = +2.83. It is thus one of the most metal-poor RR Lyrae stars known, and has more extreme [C/Fe] and [Ba/Fe] than the only other RR Lyrae star known to have a CEMP-s spectrum (TY Gru). Both stars are Oosterhoff II stars with prograde kinematics, in contrast to stars with [C/Fe] < + 0.7, such as KP Cyg and UY CrB, which are disk stars. Twelve other RR Lyrae stars with [C/Fe] {>=}+0.7 are presented as CEMP candidates for further study.

Kinman, T. D.; Beers, Timothy C. [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Aoki, Wako [National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Brown, Warren R. [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States)

2012-08-10T23:59:59.000Z

359

Study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAFNE  

E-Print Network (OSTI)

The study of the KbarN system at very low energies plays a key role for the understanding of the strong interaction between hadrons in the strangeness sector. At the DAFNE electron-positron collider of Laboratori Nazionali di Frascati we studied kaonic atoms with Z=1 and Z=2, taking advantage of the low-energy charged kaons from Phi-mesons decaying nearly at rest. The SIDDHARTA experiment used X-ray spectroscopy of the kaonic atoms to determine the transition yields and the strong interaction induced shift and width of the lowest experimentally accessible level (1s for H and D and 2p for He). Shift and width are connected to the real and imaginary part of the scattering length. To disentangle the isospin dependent scattering lengths of the antikaon-nucleon interaction, measurements of Kp and of Kd are needed. We report here on an exploratory deuterium measurement, from which a limit for the yield of the K-series transitions was derived: Y(K_tot)<0.0143 and Y(K_alpha)<0.0039 (CL 90%). Also, the upcoming ...

Bazzi, M; Berucci, C; Bombelli, L; Bragadireanu, A M; Cargnelli, M; Curceanu, C; d'Uffizi, A; Fiorini, C; Frizzi, T; Ghio, F; Guaraldo, C; Hayano, R; Iliescu, M; Ishiwatari, T; Iwasaki, M; Kienle, P; Sandri, P Levi; Longoni, A; Marton, J; Okada, S; Pietreanu, D; Ponta, T; Vidal, A Romero; Sbardella, E; Scordo, A; Shi, H; Sirghi, D L; Sirghi, F; Tatsuno, H; Tudorache, A; Tudorache, V; Doce, O Vazquez; Widmann, E; Zmeskal, J

2013-01-01T23:59:59.000Z

360

Detection of water absorption in the dayside atmosphere of HD 189733 b using ground-based high-resolution spectroscopy at 3.2 microns  

E-Print Network (OSTI)

We report a 5 sigma detection of water absorption features in the dayside spectrum of the hot Jupiter HD 189733 b. We used high-resolution (R~100,000) spectra taken at 3.2 microns with CRIRES on the VLT to trace the radial velocity shift of the water features in the planet's dayside atmosphere during 5 hours of its 2.2 day orbit as it approached secondary eclipse. Despite considerable telluric contamination in this wavelength regime, we detect the signal within our uncertainties at the expected combination of systemic velocity (Vsys=-3 +5-6 km/s) and planet orbital velocity (Kp=154 +14-10 km/s), and determine a H2O line contrast ratio of (1.3+/-0.2)x10^-3 with respect to the stellar continuum. We find no evidence of significant absorption or emission from other carbon-bearing molecules, such as methane, although we do note a marginal increase in the significance of our detection with the inclusion of carbon dioxide in our template spectrum. This result demonstrates that ground-based, high-resolution spectrosc...

Birkby, J L; Brogi, M; de Mooij, E J W; Schwarz, H; Albrecht, S; Snellen, I A G

2013-01-01T23:59:59.000Z

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361

Quantum corrections to static solutions of Nahm equation and Sin-Gordon models via generalized zeta-function  

E-Print Network (OSTI)

One-dimensional Yang-Mills Equations are considered from a point of view of a class of nonlinear Klein-Gordon-Fock models. The case of self-dual Nahm equations and non-self-dual models are discussed. A quasiclassical quantization of the models is performed by means of generalized zeta-function and its representation in terms of a Green function diagonal for a heat equation with the correspondent potential. It is used to evaluate the functional integral and quantum corrections to mass in the quasiclassical approximation. Quantum corrections to a few periodic (and kink) solutions of the Nahm as a particular case of the Ginzburg-Landau (phi-in-quadro) and and Sin-Gordon models are evaluated in arbitrary dimensions. The Green function diagonal for heat equation with a finite-gap potential is constructed by universal description via solutions of Hermit equation. An alternative approach based on Baker-Akhiezer functions for KP equation is proposed . The generalized zeta-function and its derivative at zero point as ...

Leble, Sergey

2008-01-01T23:59:59.000Z

362

Closed orbit feedback with digital signal processing  

SciTech Connect

The closed orbit feedback experiment conducted on the SPEAR using the singular value decomposition (SVD) technique and digital signal processing (DSP) is presented. The beam response matrix, defined as beam motion at beam position monitor (BPM) locations per unit kick by corrector magnets, was measured and then analyzed using SVD. Ten BPMs, sixteen correctors, and the eight largest SVD eigenvalues were used for closed orbit correction. The maximum sampling frequency for the closed loop feedback was measured at 37 Hz. Using the proportional and integral (PI) control algorithm with the gains Kp = 3 and K{sub I} = 0.05 and the open-loop bandwidth corresponding to 1% of the sampling frequency, a correction bandwidth ({minus}3 dB) of approximately 0.8 Hz was achieved. Time domain measurements showed that the response time of the closed loop feedback system for 1/e decay was approximately 0.25 second. This result implies {approximately} 100 Hz correction bandwidth for the planned beam position feedback system for the Advanced Photon Source storage ring with the projected 4-kHz sampling frequency.

Chung, Y.; Kirchman, J.; Lenkszus, F. [and others

1994-08-01T23:59:59.000Z

363

Fusion of irreducible modules in WLM(p,p')  

E-Print Network (OSTI)

Based on symmetry principles, we derive a fusion algebra generated from repeated fusions of the irreducible modules appearing in the W-extended logarithmic minimal model WLM(p,p'). In addition to the irreducible modules themselves, closure of the commutative and associative fusion algebra requires the participation of a variety of reducible yet indecomposable modules. We conjecture that this fusion algebra is the same as the one obtained by application of the Nahm-Gaberdiel-Kausch algorithm and find that it reproduces the known such results for WLM(1,p') and WLM(2,3). For p>1, this fusion algebra does not contain a unit. Requiring that the spectrum of modules is invariant under a natural notion of conjugation, however, introduces an additional (p-1)(p'-1) reducible yet indecomposable rank-1 modules, among which the identity is found, still yielding a well-defined fusion algebra. In this greater fusion algebra, the aforementioned symmetries are generated by fusions with the three irreducible modules of conformal weights Delta_{kp-1,1}, k=1,2,3. We also identify polynomial fusion rings associated with our fusion algebras.

Jorgen Rasmussen

2009-06-30T23:59:59.000Z

364

L  

Office of Legacy Management (LM)

, , . d Sepmber 20, 1976 . e E. K. Limp, Chfdf, Process Facilities Safety liranch, ~%&iCj kP3RT uF FlhimiiS : &TECH SPECSALlY S-EL Cuwr)wTIa:i On huyusf 19, 1976, Fred F, Ha_ytaod, DRdL, and I visttdd be A?j-TzcILi - planf in ' dardrvlltit, ;ic# YorX, to i3ake a orelir;linary assczimx~f of tile radIo?ocjical status of facilities ut47fzad durfnb3 lW-51 for X': contract mrk f WI 1 vi n.; urd a. GcLwter, Ham r4tina+r, ;iismssicms warz &id ' cliL1 :Ir. tionalj fir. Ted Ckx, mo Has fmf 1 iar tri tn t:~ ject wprk, ixsistzd in iGtntiPyiy involved blant arms. Foll~Anp SW- ¶s d szatment of fin4intjs: &arhtir;fts tijs toi4. Tne cmpqr, known as Al leyhany-ludlxa at ttw tin or' tse contract, rolled uranic oillets +to solId t-o&. Tile cf)cratiofh

365

Small-Scale Water Ingression and Crust Strength Tests (SSWICS) SSWICS-6 test data report : thermal hydraulic results, Rev. 0.  

SciTech Connect

The Melt Attack and Coolability Experiments (MACE) program at Argonne National Laboratory addressed the issue of the ability of water to cool and thermally stabilize a molten core/concrete interaction (MCCI) when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. However, due to the integral nature of these tests, several questions regarding the crust freezing behavior could not be adequately resolved. These questions include: (1) To what extent does water ingression into the crust increase the melt quench rate above the conduction-limited rate and how is this affected by melt composition and system pressure? (2) What is the fracture strength of the corium crust when subjected to a thermal-mechanical load and how does it depend upon the melt composition? A series of separate-effects experiments are being conducted to address these issues. The first employs an apparatus designed to measure the quench rate of a pool of corium ({approx} {phi} 30 cm; up to 20 cm deep). The main parameter to be varied in these quench tests is the melt composition since it is thought to have a critical influence on the crust cracking behavior which, in turn, alters quench rate. The issue of crust strength is being addressed with a second apparatus designed to mechanically load the crust produced by the quench tests. This apparatus measures the fracture strength of the crust while it is either at room temperature or above, the latter state being achieved with a heating element placed below the crust. The two apparatuses used to measure the melt quench rate and crust strength are jointly referred to as SSWICS (Small-Scale Water Ingression and Crust Strength). This report describes results of the sixth water ingression test, designated SSWICS-6. This test investigated the quenching behavior of a fully oxidized PWR corium melt containing 15 wt% siliceous concrete at a system pressure of 1 bar absolute. The report includes a description of the test apparatus, the instrumentation used, plots of the recorded data, and some rudimentary data reduction to obtain an estimate of the heat flux from the corium to the overlying water pool.

Lomperski, S.; Farmer, M. T.; Kilsdonk, D.; Aeschlimann, B. (Nuclear Engineering Division)

2011-06-28T23:59:59.000Z

366

A multiperiod optimization model to schedule large-scale petroleum development projects  

E-Print Network (OSTI)

This dissertation solves an optimization problem in the area of scheduling large-scale petroleum development projects under several resources constraints. The dissertation focuses on the application of a metaheuristic search Genetic Algorithm (GA) in solving the problem. The GA is a global search method inspired by natural evolution. The method is widely applied to solve complex and sizable problems that are difficult to solve using exact optimization methods. A classical resource allocation problem in operations research known under Knapsack Problems (KP) is considered for the formulation of the problem. Motivation of the present work was initiated by certain petroleum development scheduling problem in which large-scale investment projects are to be selected subject to a number of resources constraints in several periods. The constraints may occur from limitations in various resources such as capital budgets, operating budgets, and drilling rigs. The model also accounts for a number of assumptions and business rules encountered in the application that motivated this work. The model uses an economic performance objective to maximize the sum of Net Present Value (NPV) of selected projects over a planning horizon subject to constraints involving discrete time dependent variables. Computational experiments of 30 projects illustrate the performance of the model. The application example is only illustrative of the model and does not reveal real data. A Greedy algorithm was first utilized to construct an initial estimate of the objective function. GA was implemented to improve the solution and investigate resources constraints and their effect on the assets value. The timing and order of investment decisions under constraints have the prominent effect on the economic performance of the assets. The application of an integrated optimization model provides means to maximize the financial value of the assets, efficiently allocate limited resources and to analyze more scheduling alternatives in less time.

Husni, Mohammed Hamza

2008-12-01T23:59:59.000Z

367

PRECURSORS OF THE FORBUSH DECREASE ON 2006 DECEMBER 14 OBSERVED WITH THE GLOBAL MUON DETECTOR NETWORK (GMDN)  

Science Conference Proceedings (OSTI)

We analyze the precursor of a Forbush decrease (FD) observed with the Global Muon Detector Network on 2006 December 14. An intense geomagnetic storm is also recorded during this FD with the peak Kp index of 8+. By using the 'two-dimensional map' of the cosmic ray intensity produced after removing the contribution from the diurnal anisotropy, we succeed in extracting clear signatures of the precursor. A striking feature of this event is that a weak loss-cone (LC) signature is first recorded more than a day prior to the storm sudden commencement (SSC) onset. This suggests that the LC precursor appeared only 7 hr after the coronal mass ejection eruption from the Sun, when the interplanetary (IP) shock driven by the interplanetary coronal mass ejection was located at 0.4 AU from the Sun. We find the precursor being successively observed with multiple detectors in the network according to the Earth's spin and confirmed that the precursor continuously exists in space. The long lead time (15.6 hr) of this precursor which is almost twice the typical value indicates that the interplanetary magnetic field (IMF) was more quiet in this event than a typical power spectrum assumed for the IMF turbulence. The amplitude (-6.45%) of the LC anisotropy at the SSC onset is more than twice the FD size, indicating that the maximum intensity depression behind the IP shock is much larger than the FD size recorded at the Earth in this event. We also find the excess intensity from the sunward IMF direction clearly observed during {approx}10 hr preceding the SSC onset. It is shown that this excess intensity is consistent with the measurement of the particles accelerated by the head-on collisions with the approaching shock. This is the first detailed observation of the precursor due to the shock reflected particles with muon detectors.

Fushishita, A.; Kato, C.; Yasue, S.; Munakata, K. [Physics Department, Shinshu University, Matsumoto, Nagano 390-8621 (Japan); Kuwabara, T.; Bieber, J. W.; Evenson, P. [Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, DE 19716 (United States); Da Silva, M. R.; Lago, A. Dal [National Institute for Space Research (INPE), 12227-010 Sao Jose dos Campos, SP (Brazil); Schuch, N. J. [Southern Regional Space Research Center (CRS/INPE), P.O. Box 5021, 97110-970, Santa Maria, RS (Brazil); Tokumaru, M. [Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8601 (Japan); Duldig, M. L. [Australian Antarctic Division, Kingston, Tasmania 7050 (Australia); Humble, J. E. [School of Mathematics and Physics, University of Tasmania, Hobart, Tasmania 7001 (Australia); Sabbah, I. [Astronomy Department, Faculty of Science, King Abdulaziz University, Jeddah (Saudi Arabia); Al Jassar, H. K.; Sharma, M. M. [Physics Department, Faculty of Science, Kuwait University, Kuwait City (Kuwait)

2010-06-01T23:59:59.000Z

368

An analysis on the mid-latitude scintillation and coherence frequency bandwidth using transionospheric VHF signals  

Science Conference Proceedings (OSTI)

An analysis was perfonned on the mid-latitude scintillation and coherence frequency bandwidth (Fcoh) using transionospheric VHF signal data. The data include 1062 events spanning from November 1997 to June 2002. Each event records FORTE satellite received VHF signals from LAPP located at Los Alamos, New Mexico. Fcohs were derived to study scintillation characteristics on diurnal and seasonal variations, as well as changes due to solar and geomagnetic activities. Comparisons to the VHFIUHF coherence frequency bandwidth studies previously reported at equatorial and mid-latitude regions are made using a 4th power frequency dependence relationship. Furthennore, a wideband ionospheric scintillation model, WBMOD, was used to estimate Fcohs and compared with our VHF Fcoh values. Our analysis indicates mid-latitude scintillation characteristics that are not previously revealed. At the VHF bottom frequency range (3035 MHz), distinguished smaller Fcohs are found in time period from sunset to midnight, in wann season from May to August, and in low solar activity years. The effects of geomagnetic storm activity on Fcoh are characterized by a sudden transition at a Kp index of 50-60. Comparisons with median Fcohs estimated from other studies validated our VHF Fcohs for daytime while an order of magnitude larger Fcohs are found for nighttime, implying a time-dependent issue in applying the 4th order power relationship. Furthermore, comparisons with WBMOD-estimated Fcohs indicated generally matched median scintillation level estimates while differences do exist for those events undergoing high geomagnetic stonn activity which may imply underestimates of scintillation level by the WBMOD in the mid-latitude regions.

Juang, Zhen [Los Alamos National Laboratory; Roussel-dupre, Robert [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

369

The scalar perturbation spectral index n_s: WMAP sensitivity to unresolved point sources  

E-Print Network (OSTI)

Precision measurement of the scalar perturbation spectral index, n_s, from the Wilkinson Microwave Anisotropy Probe temperature angular power spectrum requires the subtraction of unresolved point source power. Here we reconsider this issue. First, we note a peculiarity in the WMAP temperature likelihood's response to the source correction: Cosmological parameters do not respond to increased source errors. An alternative and more direct method for treating this error term acts more sensibly, and also shifts n_s by ~0.3 sigma closer to unity. Second, we re-examine the source fit used to correct the power spectrum. This fit depends strongly on the galactic cut and the weighting of the map, indicating that either the source population or masking procedure is not isotropic. Jackknife tests appear inconsistent, causing us to assign large uncertainties to account for possible systematics. Third, we note that the WMAP team's spectrum was computed with two different weighting schemes: uniform weights transition to inverse noise variance weights at l = 500. The fit depends on such weighting schemes, so different corrections apply to each multipole range. For the Kp2 mask used in cosmological analysis, we prefer source corrections A = 0.012 +/- 0.005 muK^2 for uniform weighting and A = 0.015 +/- 0.005 muK^2 for N_obs weighting. Correcting WMAP's spectrum correspondingly, we compute cosmological parameters with our alternative likelihood, finding n_s = 0.970 +/- 0.017 and sigma_8 = 0.778 +/- 0.045 . This n_s is only 1.8 sigma from unity, compared to the ~2.6 sigma WMAP 3-year result. Finally, an anomalous feature in the source spectrum at l<200 remains, most strongly associated with W-band.

K. M. Huffenberger; H. K. Eriksen; F. K. Hansen; A. J. Banday; K. M. Gorski

2007-10-10T23:59:59.000Z

370

Cross-section  

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

Cross-section Cross-section formulae for specific processes 1 39. CROSS-SECTION FORMULAE FOR SPECIFIC PROCESSES Revised September 2005 by R.N. Cahn (LBNL). Setting aside leptoproduction (for which, see Sec. 16), the cross sections of primary interest are those with light incident particles, e + e - , γγ, qq, gq , gg, etc., where g and q represent gluons and light quarks. The produced particles include both light particles and heavy ones - t, W , Z, and the Higgs boson H. We provide the production cross sections calculated within the Standard Model for several such processes. 39.1. Resonance Formation Resonant cross sections are generally described by the Breit-Wigner formula (Sec. 16 of this Review). σ(E) = 2J + 1 (2S 1 + 1)(2S 2 + 1) 4π k 2 Γ 2 /4 (E - E 0 ) 2 + Γ 2 /4 B in B out , (39.1) where E is the c.m. energy, J is the spin of the resonance, and the number of polarization states of the two incident particles

371

David_practical_calc.pptx  

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

Prac%cal Prac%cal c alcula%ons o f s emiconductors a nd m etals David A . S trubbe Department o f M aterials S cience a nd E ngineering, Massachuse8s I ns:tute o f T echnology BerkeleyGW t utorial 22 November 2013 Outline 1. Screening m odels f or E psilon 2. Construc%on o f k ---grids 3. Special t reatment f or m etals i n E psilon 4. Symmetry a nd d egeneracy 5. Linearizing t he D yson e qua%on 6. Real a nd c omplex v ersion Mean-Field φ MF nk , E MF nk WFN , V xc vxc.dat , ρ RHO epsilon -1 G,G (q, E) eps0mat,epsmat sigma E QP nk eqp.dat kernel K vck,v c k bsedmat,bsexmat absorption A s vck , Ω s , eigenvectors,eigenvalues.dat (ω), JDOS(ω) absorption eh.dat k co k fi Screening m odels: H ow d o w e u se ε? Screening m odels: H ow d o w e u se ε? Sigma i ntegrates o ver q w ith ε ---1 (q) Absorp%on i

372

gravrpp.dvi  

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

October October 2011 by T. Damour (IHES, Bures-sur-Yvette, France). Einstein's General Relativity, the current "standard" theory of gravitation, describes gravity as a universal deformation of the Minkowski metric: g µν (x λ ) = η µν + h µν (x λ ) , where η µν = diag(-1, +1, +1, +1) . (20.1) General Relativity is classically defined by two postulates. One postulate states that the Lagrangian density describing the propagation and self-interaction of the gravitational field is L Ein [g µν ] = c 4 16πG N √ gg µν R µν (g) , (20.2) R µν (g) = ∂ α Γ α µν - ∂ ν Γ α µα + Γ β αβ Γ α µν - Γ β αν Γ α µβ , (20.3) Γ λ µν = 1 2 g λσ (∂ µ g νσ + ∂ ν g µσ - ∂ σ g µν ) , (20.4) where G N is Newton's constant, g = - det(g µν ), and g µν is the matrix inverse of g µν . A second postulate states that g µν couples universally, and minimally, to all the fields of the

373

C  

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

C C om pact S uperconducting F F Q uadrupole M agnet O utline. S uperconducting M agnets for the H E R A -II L um inosity U pgrade. NLC -The NextLi nearCol l i derPr oj ect I P Cur r entLead & Hel i um Feed Poi nt Det ect orCom ponent s + Sol enoi d GO ( Lef t ) GG ( Ri ght ) Cur r entLead & Hel i um Feed Poi nt Minicryostat * Superconducting magnets installed into existing ZEUS and H1 detectors (solenoid, so no iron yoke). * Coils for separating beams and reducing e-ring β* (dipole, quad, skew-quad, skew-dipole & sextupole). * Met extremely tight radial budget for cryostat. * Met demanding field harmonic requirements. * Technology now will be used for BEPC-II Upgrade and possibly the SLAC PEP-II B-Factory Upgrade. Endcan GO Endcan S uperconducting M agnets for the H E R A -II L um inosity U pgrade. He Cont ai nm ent Coi lSuppor tTube 102 m m I D 5 m m W al l Vacuum Flange Connection to Experimental Beam Pipe Warm-to-Cold

374

crosssecrpp.dvi  

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

Cross-section Cross-section formulae for specific processes 1 44. CROSS-SECTION FORMULAE FOR SPECIFIC PROCESSES Revised October 2009 by H. Baer (University of Oklahoma) and R.N. Cahn (LBNL). PART I: STANDARD MODEL PROCESSES Setting aside leptoproduction (for which, see Sec. 16 of this Review), the cross sections of primary interest are those with light incident particles, e + e - , γγ, qq, gq , gg, etc., where g and q represent gluons and light quarks. The produced particles include both light particles and heavy ones - t, W , Z, and the Higgs boson H. We provide the production cross sections calculated within the Standard Model for several such processes. 44.1. Resonance Formation Resonant cross sections are generally described by the Breit-Wigner formula (Sec. 18 of this Review). σ(E) = 2J + 1 (2S 1 + 1)(2S 2 + 1) 4π k 2 Γ 2 /4 (E - E 0 ) 2 + Γ 2 /4 B in B out , (44.1) where E is the c.m. energy, J is the spin of

375

Group Publications-Surface Electrochemistry and Electrocatalysis (SEE)  

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

SEE Group Publications 2009 - present SEE Group Publications 2009 - present 2013 Ordered Bilayer Ruthenium-Platinum Core-Shell Nanoparticles as Carbon Monoxide-Tolerant Fuel Cell Catalysts, Y.-C. Hsieh, Y. Zhang, D. Su, V. Volkov, R. Si, L. Wu, Y. Zhu, W. An, P. Liu, P. He, S. Ye, R. R. Adzic, and J.X. Wang, Nature Communications, in press. Pt Monolayer on Au-Stabilized PdNi Core-Shell Nanoparticles for Oxygen Reduction Reaction, K.A. Kuttiyiel, K. Sasaki, D. Su, M.B. Vukmirovic, N.S. Marinkovic, R.R. Adzic, Electrochimica Acta, in press. Oxygen Reduction Activity of IrCu Core Platinum Monolayer Shell Nano-electrocatalysts, Y.M. Choi, K.A. Kuttiyiel, J. P. Labis, K. Sasaki, G.-G. Park, T.-H. Yang, R.R. Adzic, Topics in Catalysis, in press. The Role of Rhodium and Tin Oxide in the Platinum-based Electrocatalysts for Ethanol Oxidation to CO2, M. Li, W.-P. Zhou, N.S. Marinkovic, K. Sasaki, R.R. Adzic, Electrochimica Acta, 104 (2013) 454-461.

376

gravrpp.dvi  

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

September September 2013 by T. Damour (IHES, Bures-sur-Yvette, France). Einstein's General Relativity, the current "standard" theory of gravitation, describes gravity as a universal deformation of the Minkowski metric: g µν (x λ ) = η µν + h µν (x λ ) , where η µν = diag(-1, +1, +1, +1) . (20.1) General Relativity is classically defined by two postulates. One postulate states that the Lagrangian density describing the propagation and self-interaction of the gravitational field is L Ein [g µν ] = c 4 16πG N √ gg µν R µν (g) , (20.2) R µν (g) = ∂ α Γ α µν - ∂ ν Γ α µα + Γ β αβ Γ α µν - Γ β αν Γ α µβ , (20.3) Γ λ µν = 1 2 g λσ (∂ µ g νσ + ∂ ν g µσ - ∂ σ g µν ) , (20.4) where G N is Newton's constant, g = - det(g µν ), and g µν is the matrix inverse of g µν . A second postulate states that g µν couples universally, and minimally, to all the fields of

377

LAX XXlCfl jX?iK, Idd+?KYLViG?IA  

Office of Legacy Management (LM)

f f , : I~&l, samtier cipwati8Aa CffUm - . Jiux.lCJ d,# 1754 - - _- - .- t :; . Jesse e. ahizmn*~*ter -2.' -------- - _ &tV' hi@A l f izau Bkteriala ;' . . 1 -7 I _' i' . Fpr&G& r&Q Q,&& fu &fI& L;&& -l&d 2;,i' iI,;/Qi' rIGN CQ&GgJy p;E& p;~p>gyf LAX XXlCfl jX?iK, Idd+?KYLViG?IA i-icfer~~o is &o ta yaw rwarandu3;: l P iimwmbec L?, 1953, reque&in~ a d&q.&ti of khority tA A&sister prog= for th+zz developmrrrl, Ii-&k& & acyui8itti ef c;uYletit*type and reswitlitc-type urtim bi:aPing eres and far t3-u jx*uctim and acquisitian 6f W ;aniU CCm- csa:ratc~ fhzi awes wit2n Lhe Six&e of Pemlsyzvania. 1 da not b&i- the projscrt fmr the pkcch2670 +S eroa from i&d.&

378

Electric charge in the field of a magnetic event in three-dimensional spacetime  

E-Print Network (OSTI)

We analyze the motion of an electric charge in the field of a magnetically charged event in three-dimensional spacetime. We start by exhibiting a first integral of the equations of motion in terms of the three conserved components of the spacetime angular momentum, and then proceed numerically. After crossing the light cone of the event, an electric charge initially at rest starts rotating and slowing down. There are two lengths appearing in the problem: (i) the characteristic length $\\frac{q g}{2 \\pi m}$, where $q$ and $m$ are the electric charge and mass of the particle, and $g$ is the magnetic charge of the event; and (ii) the spacetime impact parameter $r_0$. For $r_0 \\gg \\frac{q g}{2 \\pi m}$, after a time of order $r_0$, the particle makes sharply a quarter of a turn and comes to rest at the same spatial position at which the event happened in the past. This jump is the main signature of the presence of the magnetic event as felt by an electric charge. A derivation of the expression for the angular momentum that uses Noether's theorem in the magnetic representation is given in the Appendix.

Claudio Bunster; Cristian Martinez

2011-09-10T23:59:59.000Z

379

Detecting a Higgs Pseudoscalar with a Z Boson Produced in Bottom Quark Fusion  

E-Print Network (OSTI)

We investigate the prospects of detecting a Higgs pseudoscalar ($A^0$) in association with a $Z$ gauge boson produced from bottom quark fusion ($b\\bar{b} \\to ZA^0$) at the CERN Large Hadron Collider (LHC). A general two Higgs doublet model and the minimal supersymmetric standard model are adopted to study the discovery potential of $pp \\to ZA^0 \\to \\ell \\bar{\\ell} b\\bar{b} +X (\\ell = e, \\mu)$, via $b\\bar{b} \\to ZA^0$ with physics backgrounds and realistic cuts. Promising results are found for $m_A \\alt 400$ GeV in a general two Higgs doublet model when the heavier Higgs scalar ($H^0$) can decay into a $Z$ boson and a Higgs pseudoscalar ($H^0 \\to ZA^0$). We compare the production rates from bottom quark fusion ($b\\bar{b} \\to ZA^0$) and gluon fusion ($gg \\to ZA^0$) and find that they are complementary processes to produce $ZA^0$ in hadron collisions. While gluon fusion is the major source for producing a Higgs pseudoscalar associated with a $Z$ boson at the LHC for $\\tan\\beta \\alt 10$, bottom quark fusion can make dominant contributions for $\\tan\\beta \\agt 10$.

Chung Kao; Shankar Sachithanandam

2004-11-24T23:59:59.000Z

380

Kolmogorov-Sinai entropy in field line diffusion by anisotropic magnetic turbulence  

E-Print Network (OSTI)

The Kolmogorov-Sinai (KS) entropy in turbulent diffusion of magnetic field lines is analyzed on the basis of a numerical simulation model and theoretical investigations. In the parameter range of strongly anisotropic magnetic turbulence the KS entropy is shown to deviate considerably from the earlier predicted scaling relations [Rev. Mod. Phys. {\\bf 64}, 961 (1992)]. In particular, a slowing down logarithmic behavior versus the so-called Kubo number $R\\gg 1$ ($R = (\\delta B / B_0) (\\xi_\\| / \\xi_\\bot)$, where $\\delta B / B_0$ is the ratio of the rms magnetic fluctuation field to the magnetic field strength, and $\\xi_\\bot$ and $\\xi_\\|$ are the correlation lengths in respective dimensions) is found instead of a power-law dependence. These discrepancies are explained from general principles of Hamiltonian dynamics. We discuss the implication of Hamiltonian properties in governing the paradigmatic "percolation" transport, characterized by $R\\to\\infty$, associating it with the concept of pseudochaos (random non-chaotic dynamics with zero Lyapunov exponents). Applications of this study pertain to both fusion and astrophysical plasma and by mathematical analogy to problems outside the plasma physics. This research article is dedicated to the memory of Professor George M. Zaslavsky

Alexander V. Milovanov; Rehab Bitane; Gaetano Zimbardo

2009-04-23T23:59:59.000Z

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381

Nickel (II) Ions Interaction with Polynucleotides and DNA of Different GC Composition  

E-Print Network (OSTI)

The goal of the work was to study the role of GC alternative dimmers in the binding of DNA with Ni (II) ions. The method of ultraviolet difference spectroscopy has been applied to investigate Ni (II) ions interactions with DNA extracted from Clostridium perfringens, Mice liver (C3HA line), Calf thymus, Salmon sperm, Herring sperm, E.coli, Micrococcus luteus and polynucleotides Poly (dA-dT)xPoly (dA-dT), Poly (dG)x Poly (dC), Poly (dG-dC)xPoly (dG-dC). It is shown that Ni (II) ions at outer-spherical binding with DNA double helix from the side of the major groove choose more stable dimmers 3^'-C-G-5^' . . 5^'-G-C-3^' and get bound with N7 atoms of both guanines in dimmer forming G-G interstrand crosslink. It directly correlates to the process of forming point defects of Watson-Crick wrong pair type (creation of rare keto-enolic and amino-imino tautomeric forms) and depurinization.

Bregadze, Vasil G; Melikishvili, Sophie Z; Melikishvili, Zaza G

2009-01-01T23:59:59.000Z

382

New quantum gravity effect, dark energy, accelerating universe, black hole and experimental scheme using superfluid Helium and atom interferometer  

E-Print Network (OSTI)

Considerable attention has been focused on Verlinde's recent work, claiming that Newton's gravity is not a fundamental force. In a recent work (arXiv:1012.5858), we give further the logic basis and basic clues to derive the Newton's gravity, inertia law and Einstein's weak equivalence principle. In this work, we show that if the gravity is not a fundamental force, in special case, it could be repulsive when quantum wavepacket effect is considered. This quantum gravity effect leads to several physical effects: (1) It is consistent with the universe with accelerating expansion, if the gravity and quantum effect of the fluctuating 'vacuum' (dark energy) is considered. The role of the cosmological constant is naturally interpreted when the gravity and quantum effect of the whole 'vacuum' background is considered. (2) It leads to new idea about black hole information paradox, no-hair theorem and Hawking radiation. (3) With a sphere full of superfluid Helium, we propose a feasible experimental scheme to test our idea with an atom interferometer placed in the sphere. Our calculations show that the accuracy Delta g/g below 10^(-8) could be used to test our idea, which satisfies the present experimental technique of atom interferometer.

Hongwei Xiong

2011-01-03T23:59:59.000Z

383

Possibility of early Higgs boson discovery in nonminimal Higgs sectors  

SciTech Connect

Particle physics models with more than one Higgs boson occur in many frameworks for physics beyond the standard model, including supersymmetry, technicolor, composite Higgs, and ''little Higgs'' models. If the Higgs sector contains couplings stronger than electroweak gauge couplings, there will be heavy Higgs particles that decay to lighter Higgs particles plus heavy particles such as W, Z, and t. This motivates searches for final states involving multiple W, Z, t, and bb pairs. A two Higgs doublet model with custodial symmetry is a useful simplified model to describe many of these signals. The model can be parameterized by the physical Higgs masses and the mixing angles {alpha} and {beta}, so discovery or exclusion in this parameter space has a straightforward physical interpretation. We illustrate this with a detailed analysis of the process gg{yields}A followed by A{yields}hZ and h{yields}WW. For m{sub A}{approx_equal}330 GeV, m{sub h}{approx_equal}200 GeV we can get a 4.5{sigma} signal with 1 fb{sup -1} of integrated luminosity at the Large Hadron Collider.

Chang, Spencer [Physics Department, University of California Davis, Davis, California 95616 (United States); Department of Physics, University of Oregon, Eugene, Oregon 97403 (United States); Evans, Jared A.; Luty, Markus A. [Physics Department, University of California Davis, Davis, California 95616 (United States)

2011-11-01T23:59:59.000Z

384

Higgs Boson Production and Decay in Little Higgs Models with T-parity  

E-Print Network (OSTI)

We study Higgs boson production and decay in a certain class of Little Higgs models with T-parity in which some T-parity partners of the Standard Model (SM) fermions gain their masses through Yukawa-type couplings. We find that the Higgs boson production cross section of a 120 GeV Higgs boson at the CERN LHC via gg fusion process at one-loop level could be reduced by about 45%, 35% and 20%, as compared to its SM prediction, for a relatively low new particle mass scale f = 600, 700 and 1000 GeV, respectively. On the other hand, the weak boson fusion cross section is close to the SM value. Furthermore, the Higgs boson decay branching ratio into di-photon mode can be enhanced by about 35% in small Higgs mass region in certain case, for the total decay width of Higgs boson in the Little Higgs model is always smaller than that in the SM.

Chuan-Ren Chen; Kazuhiro Tobe; C. -P. Yuan

2006-02-22T23:59:59.000Z

385

Entangling photons via the quantum Zeno effect  

E-Print Network (OSTI)

The quantum Zeno effect describes the inhibition of quantum evolution by frequent measurements. Here, we propose a scheme for entangling two given photons based on this effect. We consider a linear-optics set-up with an absorber medium whose two-photon absorption rate $\\xi_{2\\gamma}$ exceeds the one-photon loss rate $\\xi_{1\\gamma}$. In order to reach an error probability $P_{\\rm error}$, we need $\\xi_{1\\gamma}/\\xi_{2\\gamma}based on coherent excitations of many atoms and exploits the fact that $\\xi_{2\\gamma}$ scales with the number of excitations but $\\xi_{1\\gamma}$ does not. The third mechanism envisages three-level systems where the middle level is meta-stable ($\\Lambda$-system). In this case, $\\xi_{1\\gamma}$ is more strongly reduced than $\\xi_{2\\gamma}$ and thus it should be possible to achieve $\\xi_{2\\gamma}/\\xi_{1\\gamma}\\gg1$. In conclusion, although our scheme poses challenges regarding the density of active atoms/molecules in the absorber medium, their coupling constants and the detuning, etc., we find that a two-photon gate with an error probability $P_{\\rm error}$ below 25% might be feasible using present-day technology.

Nicolai ten Brinke; Andreas Osterloh; Ralf Schtzhold

2012-12-06T23:59:59.000Z

386

Content and chemical form of mercury and selenium in Lake Ontario salmon and trout  

SciTech Connect

The content and chemical form of mercury and selenium were determined in the edible tissue of salmon (coho, chinook) and trout (lake, brown) taken offshore from Lake Ontario near Rochester, New York. For all species, total mercury content ranged from 0.3 to 0.8 micro g/g (fresh-weight), which is similar to concentrations commonly found in canned tuna. Most of the total mercury (63 to 79%) was present as methylmercury, the remainder being divalent inorganic mercury. For all species, 6 to 45% of the total selenium content was present as selenate (SeVI), the remainder being selenite (SeIV) and selenide (SEII). On a molar basis, total selenium content usually exceeded that of total mercury. Samples of smoked and unsmoked brown trout fillets were also examined. Based on the results of this study there is no immediate human health hazard from mercury and selenium. However, there is a need to report specific forms of these metals in Lake Ontario salmonid fish so that elevated concentrations can be better evaluated. 42 references, 1 figure, 4 tables.

Cappon, C.J.

1984-01-01T23:59:59.000Z

387

Recoil-range studies of heavy products of multinucleon transfer from /sup 18/O to /sup 245/Cm and /sup 249/Cf  

SciTech Connect

Recoil range distributions were measured for alpha and spontaneous fission activities made in the bombardment of /sup 245/Cm and /sup 249/Cf with /sup 18/O from 6.20 MeV/nucleon down to the interaction barrier. The shape of the distributions indicates tht transfers of up to four protons take place via a combination of quasi-elastic (QET) and deep inelastic (DIT) mechanisms, rather than complete fusion-de-excitation (CF) or massive transfer (MT). Angular distributions constructed from recoil range distributions, assuming QET/DIT, indicate that the QET component contributes more significantly to the heavy product residue cross section than the DIT, even though primary cross sections are expected to be higher for DIT than for QET. This may be explained qualitatively as a result of the high excitation energies associated with DIT; the very negative Q/sub gg/ of projectile stripping for these systems combined with the lower expected optimal Q/sub rxn/ of QET compared to DIT can give QET products comparatively low excitation.

McFarland, R.M.

1982-09-01T23:59:59.000Z

388

Theory of localization and resonance phenomena in the quantum kicked rotor  

E-Print Network (OSTI)

We present an analytic theory of quantum interference and Anderson localization in the quantum kicked rotor (QKR). The behavior of the system is known to depend sensitively on the value of its effective Planck's constant $\\he$. We here show that for rational values of $\\he/(4\\pi)=p/q$, it bears similarity to a disordered metallic ring of circumference $q$ and threaded by an Aharonov-Bohm flux. Building on that correspondence, we obtain quantitative results for the time--dependent behavior of the QKR kinetic energy, $E(\\tilde t)$ (this is an observable which sensitively probes the system's localization properties). For values of $q$ smaller than the localization length $\\xi$, we obtain scaling $E(\\tilde t) \\sim \\Delta \\tilde t^2$, where $\\Delta=2\\pi/q$ is the quasi--energy level spacing on the ring. This scaling is indicative of a long time dynamics that is neither localized nor diffusive. For larger values $q\\gg \\xi$, the functions $E(\\tilde t)\\to \\xi^2$ saturates (up to exponentially small corrections $\\sim\\exp(-q/\\xi)$), thus reflecting essentially localized behavior.

C. Tian; A. Altland

2010-01-25T23:59:59.000Z

389

Techno-economic analysis of using corn stover to supply heat and power to a corn ethanol plant - Part 2: Cost of heat and power generation systems  

Science Conference Proceedings (OSTI)

This paper presents a techno-economic analysis of corn stover fired process heating (PH) and the combined heat and power (CHP) generation systems for a typical corn ethanol plant (ethanol production capacity of 170 dam3). Discounted cash flow method was used to estimate both the capital and operating costs of each system and compared with the existing natural gas fired heating system. Environmental impact assessment of using corn stover, coal and natural gas in the heat and/or power generation systems was also evaluated. Coal fired process heating (PH) system had the lowest annual operating cost due to the low fuel cost, but had the highest environmental and human toxicity impacts. The proposed combined heat and power (CHP) generation system required about 137 Gg of corn stover to generate 9.5 MW of electricity and 52.3 MW of process heat with an overall CHP efficiency of 83.3%. Stover fired CHP system would generate an annual savings of 3.6 M$ with an payback period of 6 y. Economics of the coal fired CHP system was very attractive compared to the stover fired CHP system due to lower fuel cost. But the greenhouse gas emissions per Mg of fuel for the coal fired CHP system was 32 times higher than that of stover fired CHP system. Corn stover fired heat and power generation system for a corn ethanol plant can improve the net energy balance and add environmental benefits to the corn to ethanol biorefinery.

Mani, Sudhagar [University of Georgia; Sokhansanj, Shahabaddine [ORNL; Togore, Sam [U.S. Department of Energy; Turhollow Jr, Anthony F [ORNL

2010-03-01T23:59:59.000Z

390

Techno-economic analysis of using corn stover to supply heat and power to a corn ethanol plant - Part 1: Cost of feedstock supply logistics  

Science Conference Proceedings (OSTI)

Supply of corn stover to produce heat and power for a typical 170 dam3 dry mill ethanol plant is proposed. The corn ethanol plant requires 5.6 MW of electricity and 52.3 MW of process heat, which creates the annual stover demand of as much as 140 Gg. The corn stover supply system consists of collection, preprocessing, transportation and on-site fuel storage and preparation to produce heat and power for the ethanol plant. Economics of the entire supply system was conducted using the Integrated Biomass Supply Analysis and Logistics (IBSAL) simulation model. Corn stover was delivered in three formats (square bales, dry chops and pellets) to the combined heat and power plant. Delivered cost of biomass ready to be burned was calculated at 73 $ Mg-1 for bales, 86 $ Mg-1 for pellets and 84 $ Mg-1 for field chopped biomass. Among the three formats of stover supply systems, delivered cost of pelleted biomass was the highest due to high pelleting cost. Bulk transport of biomass in the form of chops and pellets can provide a promising future biomass supply logistic system in the US, if the costs of pelleting and transport are minimized.

Sokhansanj, Shahabaddine [ORNL; Mani, Sudhagar [University of Georgia; Togore, Sam [U.S. Department of Energy; Turhollow Jr, Anthony F [ORNL

2010-01-01T23:59:59.000Z

391

Natural gas storage on activated carbon  

SciTech Connect

Natural gas is a good fuel for internal combustion engines, but its low energy density is a significant drawback. The energy density can be increased by adsorption on a high surface area activated carbon. But with usage, some of the constituents in the natural gas composition accumulate on the carbon and reduce its adsorptivity. The adsorption desorption of natural gas on 9LXC activated carbon was investigated to 100 cycles at 21/sup 0/C and pressures of up to 12 MPa. The decrease in the capacity, G, as a function of the number of cycles, N, was found to follow the empirical correlation: G/G /SUB o/ = 1 - 0.085Log(N). Analysis of the activated carbon after 100 cycles showed accumulation of C/sub 4/ and higher hydrocarbons but not of C/sub 2/ and C/sub 3/. For automotive applications, activated carbon appears practical in a narrow pressure range, centering around 7 MPa (1000 psig). The preferred storage is at a pressure of 17 MPa or higher, without the use of activated carbons.

Golovoy, A.; Blais, E.J.

1983-10-01T23:59:59.000Z

392

Higgs friends and counterfeits at hadron colliders  

SciTech Connect

We consider the possibility of 'Higgs counterfeits' - scalars that can be produced with cross sections comparable to the SM Higgs, and which decay with identical relative observable branching ratios, but which are nonetheless not responsible for electroweak symmetry breaking. We also consider a related scenario involving 'Higgs friends,' fields similarly produced through gg fusion processes, which would be discovered through diboson channels WW,ZZ,{gamma}{gamma}, or even {gamma}Z, potentially with larger cross sections times branching ratios than for the Higgs. The discovery of either a Higgs friend or a Higgs counterfeit, rather than directly pointing towards the origin of the weak scale, would indicate the presence of new colored fields necessary for the sizable production cross section (and possibly new colorless but electroweakly charged states as well, in the case of the diboson decays of a Higgs friend). These particles could easily be confused for an ordinary Higgs, perhaps with an additional generation to explain the different cross section, and we emphasize the importance of vector boson fusion as a channel to distinguish a Higgs counterfeit from a true Higgs. Such fields would naturally be expected in scenarios with 'effective Z's,' where heavy states charged under the SM produce effective charges for SM fields under a new gauge force. We discuss the prospects for discovery of Higgs counterfeits, Higgs friends, and associated charged fields at the LHC.

Fox, Patrick J.; /Fermilab; Tucker-Smith, David; /New York U., CCPP /New York U. /Williams Coll. /Princeton, Inst. Advanced Study; Weiner, Neal; /New York U., CCPP /New York U. /Princeton, Inst. Advanced Study

2011-04-01T23:59:59.000Z

393

Higgs friends and counterfeits at hadron colliders  

E-Print Network (OSTI)

We consider the possibility of "Higgs counterfeits" - scalars that can be produced with cross sections comparable to the SM Higgs, and which decay with identical relative observable branching ratios, but which are nonetheless not responsible for electroweak symmetry breaking. We also consider a related scenario involving "Higgs friends," fields similarly produced through gg fusion processes, which would be discovered through diboson channels WW, ZZ, gamma gamma, or even gamma Z, potentially with larger cross sections times branching ratios than for the Higgs. The discovery of either a Higgs friend or a Higgs counterfeit, rather than directly pointing towards the origin of the weak scale, would indicate the presence of new colored fields necessary for the sizable production cross section (and possibly new colorless but electroweakly charged states as well, in the case of the diboson decays of a Higgs friend). These particles could easily be confused for an ordinary Higgs, perhaps with an additional generation to explain the different cross section, and we emphasize the importance of vector boson fusion as a channel to distinguish a Higgs counterfeit from a true Higgs. Such fields would naturally be expected in scenarios with "effective Z's," where heavy states charged under the SM produce effective charges for SM fields under a new gauge force. We discuss the prospects for discovery of Higgs counterfeits, Higgs friends, and associated charged fields at the LHC.

Patrick J. Fox; David Tucker-Smith; Neal Weiner

2011-04-28T23:59:59.000Z

394

Charged Higgs Production in Association With W^{\\pm} at Large Hadron Colliders  

E-Print Network (OSTI)

Many new physics models beyond the standard model, such as the littlest higgs models and the left right twin higgs models, predict the existence of the large charged higgs couplings H^-q\\bar b and H^+b\\bar q, where q=t or the new vector-like heavy quark T; On the other hand, some new physics models like the littlest higgs also predict the gauge-higgs couplings. Such couplings may have rich collider phenomenology. We focus our attention on these couplings induced by the littlest higgs models and the left right twin higgs models models and consider their contributions to the production cross section for W^\\pm H^\\mp production at the large hadron colliders. We find that the cross sections, in the littlest higgs models, on the parton level gg \\to W^\\pm H^\\mp and q\\bar q \\to W^\\pm H^\\mp (q=u,d,s,c,b) may reach tens of several dozen femtobarns in reasonable parameters space at the collision energy of 14 TeV and that the total cross section can even reach a few hundred femtobarns in certain favored space. While in the left right twin higgs models, the production rates are basically one order lower than these in littlest higgs. Therefore, due to the large cross sections of that in the littlest higgs, it may be possible to probe the charged higgs via this process in a large parameter space.

Guo-Li Liu; Fei Wang; Shuo Yang

2013-02-07T23:59:59.000Z

395

Combined upper limit on Standard Model Higgs boson production at CDF  

Science Conference Proceedings (OSTI)

The Higgs boson is the only elementary particle predicted by the Standard Model (SM) that has neither been confirmed nor refuted. The CDF collaboration has performed SM Higgs searches in many channels using p{bar p} collisions at a centre-of-mass energy {radical}s = 1.96 TeV. We present the latest combined Higgs boson search at CDF. Since the previous year's combination, the sensitivity is increased through the addition of new channels, the improvement of existing channels and the addition of new data samples. We also use the latest parton distribution functions and gg {yields} H theoretical cross sections when modelling the signal event yields. Using integrated luminosities of up to 8.2 fb{sup -1}, we observe a good agreement between data and the background prediction. Since we do not see a Higgs boson excess, we set 95% CL upper limits on the Higgs boson cross section in the range between 100 and 200 GeV/c{sup 2}, with 5 GeV/c{sup 2} increments. The observed (expected) limits for a 115 and a 165 GeV/c{sup 2} Higgs boson are 1.55 (1.49) and 0.75 (0.79) x SM, respectively. Since last year, the Higgs boson excluded range by CDF is extended to 156.5 - 173.7 and 100 - 104.5 GeV/c{sup 2}.

Adrian, Buzatu; /McGill U.

2012-02-01T23:59:59.000Z

396

Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with up to 8.2 fb-1 of Data  

E-Print Network (OSTI)

We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p-pbar collisions at the Fermilab Tevatron at sqrt(s)=1.96 TeV. The results presented here include those channels which are most sensitive to Higgs bosons with mass between 130 and 200 GeV/c^2, namely searches targeted at Higgs boson decays to W+W-, although acceptance for decays into tau+tau- and gamma gamma is included. Compared to the previous Tevatron Higgs search combination, more data have been added and the analyses have been improved to gain sensitivity. We use the MSTW08 parton distribution functions and the latest gg to H theoretical cross section predictions when testing for the presence of a SM Higgs boson. With up to 7.1 fb-1 of data analyzed at CDF, and up to 8.2 fb-1 at D0, the 95% C.L. upper limits on Higgs boson production is a factor of 0.54 times the SM cross section for a Higgs boson mass of 165 GeV/c^2. We exclude at the 95% C.L. the region 158

The CDF; D0 Collaborations; the TEVNPHWG Working Group

2011-03-16T23:59:59.000Z

397

Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with up to 8.2 fb$^{-1}$ of Data  

Science Conference Proceedings (OSTI)

We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. The results presented here include those channels which are most sensitive to Higgs bosons with mass between 130 and 200 GeV/c{sup 2}, namely searches targeted at Higgs boson decays to W{sup +}W{sup -}, although acceptance for decays into {tau}{sup |+} {tau}{sup -} and {gamma}{gamma} is included. Compared to the previous Tevatron Higgs search combination, more data have been added and the analyses have been improved to gain sensitivity. We use the MSTW08 parton distribution functions and the latest gg {yields} H theoretical cross section predictions when testing for the presence of a SM Higgs boson. With up to 7.1 fb{sup -1} of data analyzed at CDF, and up to 8.2 fb{sup -1} at D0, the 95% C.L. upper limits on Higgs boson production is a factor of 0.54 times the SM cross section for a Higgs boson mass of 165 GeV/c{sup 2}. We exclude at the 95% C.L. the region 158 < m{sub H} < 173 GeV/c{sup 2}.

Aaltonen, T.; Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T.; Adelman, J.; Aguilo, E.; Alexeev, G.D.; Alkhazov, G.; /Helsinki Inst. of Phys. /Dubna, JINR /Oklahoma U. /Michigan State U. /Tata Inst. /Illinois U., Chicago /Florida State U. /Chicago U., EFI /Simon Fraser U. /York U., Canada /St. Petersburg, INP /Illinois U., Urbana /Sao Paulo, IFT /Munich U. /University Coll. London /Oxford U. /St. Petersburg, INP /Duke U. /Kyungpook Natl. U. /Chonnam Natl. U. /Florida U. /Osaka City U.

2011-03-01T23:59:59.000Z

398

Lignocellulose Recalcitrance Screening by Integrated High Throughput Hydrothermal Pretreatment and Enzymatic Saccharification  

SciTech Connect

We report a novel 96-well multiplate reactor system for comparative analysis of lignocellulose recalcitrance via integrated hydrothermal pretreatment and enzymatic saccharification. The system utilizes stackable nickel/gold-plated 96-well aluminum reactor plates, a clamping device fit to a standard Parr reactor, and robotics for efficient liquids and solids handling. A capacity of 20 plates allows up to 1,920 separate hydrothermal reactions per run. Direct and rapid analysis of key end-products, glucose and xylose, is facilitated by the use of glucose oxidase/peroxidase and xylose dehydrogenase-linked assays. To demonstrate efficacy, a set of 755 poplar core samples from the US Department of Energy's BioEnergy Science Center was tested. Total sugar release ranged from 0.17 to 0.64 g/g of biomass and correlated strongly with the ratio of syringyl to guaiacyl lignins in the samples. Variance among sample replicates was sufficiently minimal to permit clear assignment of differences in recalcitrance throughout this large sample set.

Selig, M. J.; Tucker, M. P.; Sykes, R. W.; Reichel, K. L.; Brunecky, R.; Himmel, M. E.; Davis, M. F.; Decker, S. R.

2010-04-01T23:59:59.000Z

399

Combined upper limit on Standard Model Higgs boson production at CDF  

E-Print Network (OSTI)

The Higgs boson is the only elementary particle predicted by the Standard Model (SM) that has neither been confirmed nor refuted. The CDF collaboration has performed SM Higgs searches in many channels using $p\\pbar$ collisions at a centre-of-mass energy $\\sqrt{s}=1.96\\tev$. We present the latest combined Higgs boson search at CDF. Since the previous year's combination, the sensitivity is increased through the addition of new channels, the improvement of existing channels and the addition of new data samples. We also use the latest parton distribution functions and $gg \\rightarrow H$ theoretical cross sections when modelling the signal event yields. Using integrated luminosities of up to 8.2 $\\invfb$, we observe a good agreement between data and the background prediction. Since we do not see a Higgs boson excess, we set 95% CL upper limits on the Higgs boson cross section in the range between 100 and 200 $\\gevcc$, with 5 $\\gevcc$ increments. The observed (expected) limits for a 115 and a 165 $\\gevcc$ Higgs boson are 1.55 (1.49) and 0.75 (0.79) $\\times$ SM, respectively. Since last year, the Higgs boson excluded range by CDF is extended to 156.5 - 173.7 and 100 - 104.5 $\\gevcc$.

Buzatu Adrian

2012-02-09T23:59:59.000Z

400

Parallel electric field generation by Alfven wave turbulence  

E-Print Network (OSTI)

{This work aims to investigate the spectral structure of the parallel electric field generated by strong anisotropic and balanced Alfvenic turbulence in relation with the problem of electron acceleration from the thermal population in solar flare plasma conditions.} {We consider anisotropic Alfvenic fluctuations in the presence of a strong background magnetic field. Exploiting this anisotropy, a set of reduced equations governing non-linear, two-fluid plasma dynamics is derived. The low-$\\beta$ limit of this model is used to follow the turbulent cascade of the energy resulting from the non-linear interaction between kinetic Alfven waves, from the large magnetohydrodynamics (MHD) scales with $k_{\\perp}\\rho_{s}\\ll 1$ down to the small "kinetic" scales with $k_{\\perp}\\rho_{s} \\gg 1$, $\\rho_{s}$ being the ion sound gyroradius.} {Scaling relations are obtained for the magnitude of the turbulent electromagnetic fluctuations, as a function of $k_{\\perp}$ and $k_{\\parallel}$, showing that the electric field develops ...

Bian, N H; Brown, J C

2010-01-01T23:59:59.000Z

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401

Combined SM Higgs Limits at the Tevatron  

SciTech Connect

We combine results from CDF and D{sup 0} on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels WH {yields} {tau}{nu}b{bar b}, VH {yields} {tau}{tau}b{bar b}/jj{tau}{tau}, VH {yields} jjb{bar b}, t{bar t}H {yields} t{bar t}b{bar b} have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb{sup -1} of data analyzed at CDF, and 0.9-4.2 fb{sup -1} at D{sup 0}, the 95% C.L. upper limits on Higgs boson production are a factor of 2.5 (0.86) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. Based on simulation, the corresponding median expected upper limits are 2.4 (1.1). The mass range excluded at 95% C.L. for a SM Higgs has been extended to 160 < m{sub H} < 170 GeV/c{sup 2}.

Krumnack, N.

2009-10-01T23:59:59.000Z

402

Suggestions for benchmark scenarios for MSSM Higgs Boson searches at hadron colliders.  

SciTech Connect

The Higgs boson search has shifted from LEP2 to the Tevatron and will subsequently move to the LHC. Due to the different initial states, the Higgs production and decay channels relevant for Higgs boson searches were different at LEP2 to what they are at hadron colliders. They suggest new benchmark scenarios for the MSSM Higgs boson search at hadron colliders that exemplify the phenomenology of different parts of the MSSM parameter space. Besides the m{sub h}{sup max} scenario and the no-mixing scenario used in the LEP2 Higgs boson searches, they propose two new scenarios. In one the main production channel at the LHC, gg {yields} h, is suppressed. In the other, important Higgs decay channels at the Tevatron and at the LCH, h {yields} b{bar b} and h {yields} {tau}{sup +}{tau}{sup -}, are suppressed. All scenarios evade the LEP2 constraints for nearly the whole M{sub A}-tan {beta}-plane.

Carena, M.; Heinemeyer, S.; Wagner, C.E.M.; Weiglein, G.

2002-04-15T23:59:59.000Z

403

Combined CDF and D0 Upper Limits on Standard Model Higgs-Boson Production with 2.1 - 5.4 fb-1 of Data  

SciTech Connect

We combine results from CDF and D0 on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Tevatron Higgs search combination more data have been added and some previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-4.8 fb{sup -1} of data analyzed at CDF, and 2.1-5.4 fb{sup -1} at D0, the 95% C.L. upper limits on Higgs boson production are a factor of 2.70 (0.94) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. The corresponding median upper limits expected in the absence of Higgs boson production are 1.78 (0.89). The mass range excluded at 95% C.L. for a SM Higgs is 163 < m{sub H} < 166 GeV/c{sup 2}, with an expected exclusion of 159 < m{sub H} < 168 GeV/c{sup 2}.

Collaboration, The CDF; Collaboration, the D0; Physics, the Tevatron New; Group, Higgs Working

2009-11-01T23:59:59.000Z

404

Combined CDF and D0 Upper Limits on Standard Model Higgs-Boson Production with up to 6.7 fb$^{-1}$ of Data  

SciTech Connect

We combine results from CDF and D0 on direct searches for the standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Tevatron Higgs search combination more data have been added, additional new channels have been incorporated, and some previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With up to 5.9 fb{sup -1} of data analyzed at CDF, and up to 6.7 fb{sup -1} at D0, the 95% C.L. upper limits on Higgs boson production are factors of 1.56 and 0.68 the values of the SM cross section for a Higgs boson mass of m{sub H} = 115 GeV/c{sup 2} and 165 GeV/c{sup 2}. We exclude, at the 95% C.L., a new and larger region at high mass between 158 < m{sub H} < 175 GeV/c{sup 2}.

2010-07-01T23:59:59.000Z

405

Signal and background in NLO QCD for the search of the intermediate mass Higgs boson at the SSC  

SciTech Connect

The signal and background for the search of the Standard Model Higgs boson in the intermediate mass range 80 GeV < m{sub H} < 2M{sub Z} is studied based on calculations of the cross sections in next-to-leading order QCD perturbation theory for the production of the Higgs boson via gluon-gluon fusion and for the hadronic two-photon production. The method of Monte-Carlo integration allows the application of realistic cuts (p{sub T}, rapidity, photon isolation) to the cross section. Results are given for the K-factors of the signal and the background. It turns out that the NLO corrections improve the situation for a Higgs boson mass in the range of 80--120 GeV. Furthermore, the influence of a cut on the transverse momentum of the additional jet produced in the processes gg {yields} Hg, gq {yields} Hq, q{bar q} {yields} Hg is compared to a similar cut for the background.

Bailey, B. [Florida State Univ., Tallahassee, FL (United States). Dept. of Physics; Graudenz, D. [Lawrence Berkeley Lab., CA (United States)

1993-08-15T23:59:59.000Z

406

Vacuum polarization of scalar fields near Reissner-Nordstrm black holes and the resonance behavior in field-mass dependence  

E-Print Network (OSTI)

We study vacuum polarization of quantized massive scalar fields $\\phi$ in equilibrium at black-hole temperature in Reissner-Nordstr\\"{o}m background. By means of the Euclidean space Green's function we analytically derive the renormalized expression $phi^{2}>_{H}$ at the event horizon with the area $4\\pi r_{+}^{2}$. It is confirmed that the polarization amplitude $phi^{2}>_{H}$ is free from any divergence due to the infinite red-shift effect. Our main purpose is to clarify the dependence of $phi^{2}>_{H}$ on field mass $m$ in relation to the excitation mechanism. It is shown for small-mass fields with $mr_{+}\\ll1$ how the excitation of $phi^{2}>_{H}$ caused by finite black-hole temperature is suppressed as $m$ increases, and it is verified for very massive fields with $mr_{+}\\gg1$ that $phi^{2}>_{H}$ decreases in proportion to $m^{-2}$ with the amplitude equal to the DeWitt-Schwinger approximation. In particular, we find a resonance behavior with a peak amplitude at $mr_{+}\\simeq 0.38$ in the field-mass dependence of vacuum polarization around nearly extreme (low-temperature) black holes. The difference between Scwarzschild and nearly extreme black holes is discussed in terms of the mass spectrum of quantum fields dominant near the event horizon.

Akira Tomimatsu; Hiroko Koyama

2000-02-04T23:59:59.000Z

407

Optimal Decoherence Control in non-Markovian Open, Dissipative Quantum Systems  

E-Print Network (OSTI)

We investigate the optimal control problem for non-Markovian open, dissipative quantum system. Optimal control using Pontryagin maximum principle is specifically derived. The influences of Ohmic reservoir with Lorentz-Drude regularization are numerically studied in a two-level system under the following three conditions: \\omega_0\\ll\\omega_c, \\omega_0\\approx\\omega_c or \\omega_0\\gg\\omega_c, where \\omega_0 is the characteristic frequency of the quantum system of interest, and \\omega_c the cut-off frequency of Ohmic reservoir. The optimal control process shows its remarkable influences on the decoherence dynamics. The temperature is a key factor in the decoherence dynamics. We analyze the optimal decoherence control in high temperature, intermediate temperature, and low temperature reservoirs respectively. It implies that designing some engineered reservoirs with the controlled coupling and state of the environment can slow down the decoherence rate and delay the decoherence time. Moreover, we compare the non-Markovian optimal decoherence control with the Markovian one and find that with non-Markovian the engineered artificial reservoirs are better than with the Markovian approximation in controlling the open, dissipative quantum system's decoherence.

Wei Cui; Zairong Xi; Yu Pan

2009-10-27T23:59:59.000Z

408

Nepali Aawaz Volume 1, Issue 7, 23 December 2005 - 3 January 2006  

E-Print Network (OSTI)

af]Ng'ePsf] lyof] . cfd;efdf hg ufos ?ljg uGwe{, h]jL 6'x'/], gGbs[i0f hf]zL, /fds[i0f b'jfn cfbLn] lg/+s'ztGq la?4 uLt ufpbf pk:yLt hgtf gfr]sf lyP . g]skf Pdfn] sf]zL c~rn ;dGjo ;dLtLsf] cfof]hgfdf ;DkGg ;f] lazfn cfd ;efdf Ps nfv eGbf a9L... {ssf] Wofg dxf]T;j lt/ tfgL/ x]sf5g . pgLx? ;+u} dxf]T;jsf] d~rdf /fli6o tyf :yfgLo VoftL k|fKt ufos ufoLsf xfF:o snfsf/x? k|:t't ePsflyP . dxf]T;j cjwLe/ b}lgs ?kdf ;Fem b'O{ 306f ;Dd x'g] dgf]/~hgfTds sfo{qmddf km]zg zf], ;fFuLtLs sfo{qmd, a8L laN8L...

Shrestha, Kashish Das

409

A Combined Neutron and Gamma-Ray Multiplicity Counter Based on Liquid Scintillation Detectors  

Science Conference Proceedings (OSTI)

Multiplicity counters for neutron assay have been extensively used in materials control and accountability for nonproliferation and nuclear safeguards. Typically, neutron coincidence counters are utilized in these fields. In this work, we present a measurement system that makes use not only of neutron (n) multiplicity counting but also of gamma-ray (g) multiplicity counting and the combined higher-order multiples containing both neutrons and gamma rays. The benefit of this approach is in using both particle types available from the sample, leading to a reduction in measurement times needed when using more measurables. We present measurement results of n, g, nn, ng, gg, nnn, nng, ngg, and ggg multiples emitted by Mixed-Oxide (MOX) samples measured at Idaho National Laboratory (INL). The MOX measurement is compared to initial validation of the detection system done using a 252Cf source. The dual radiation measuring system proposed here uses extra measurables to improve the statistics when compared to a neutron-only system and allows for extended analysis and interpretation of sample parameters. New challenges such as the effect of very high intrinsic gamma-ray sources in the case of MOX samples is discussed. Successful measurements of multiples rates can be performed also when using high-Z shielding.

Andreas Enqvist; Marek Flaska; Jennifer Dolan; David L. Chichester; Sara A. Pozzi

2011-10-01T23:59:59.000Z

410

QCD matrix elements + parton showers.  

E-Print Network (OSTI)

(q, Q)?g(Q1, q) ? Q Q1 dq? ?q(q?, Q)?g(Q1, q?) + ? Q Q1 dq ?q(q, Q)?g(Q1, q) ? q Q1 dq? ?g(q?, q)?g(Q1, q?) + ? Q Q1 dq ?q(q, Q)?g(Q1, q) ? q Q1 dq? ?f(q?)?f (Q1, q?) } (2.4) where ?q,g,f are q ? qg, g ? gg and g ? qq branching probabilities ?q(q, Q... ) = 2CF pi ?S(q) q ( ln Q q ? 3 4 ) (2.5) ?g(q, Q) = 2CA pi ?S(q) q ( ln Q q ? 11 12 ) (2.6) ?f(q) = Nf 3pi ?S(q) q , (2.7) CF = (N2c ?1)/2Nc and CA = Nc for Nc colours, Nf is the number of active flavours, and ?q,g are the quark and gluon Sudakov form...

Catani, S; Krauss, F; Kuhn, R; Webber, Bryan R

411

Coal gasification  

Science Conference Proceedings (OSTI)

A standard series of two staged gas generators (GG) has been developed in the United States for producing gas with a combustion heat from 4,700 to 7,600 kilojoules per cubic meter from coal (U). The diameter of the gas generators is from 1.4 to 3.65 meters and the thermal capacity based on purified cold gas is from 12.5 to 89 million kilojoules per hour. Certain standard sized gas generators have undergone experimental industrial tests which showed that it is most expedient to feed the coal into the gas generators pneumatically. This reduces the dimensions of the charging device, makes it possible to use more common grades of structural steels and reduces the cost of the gas. A double valve reliably prevents ejections of the gasification product and promotes the best distribution of the coal in the gas generator. The gas generators may successfully operate on high moisture (up to 36 percent) brown coal. Blasting with oxygen enriched to 38 percent made it possible to produce a gas with a combustion heat of 9,350 kilojoules per cubic meter. This supports a combustion temperature of 1,700C.

Rainey, D.L.

1983-01-01T23:59:59.000Z

412

Pi-Josephson Junction and Spontaneous Superflow in Rings from Ultracold Fermionic Atomic Gases  

E-Print Network (OSTI)

The BCS-like pairing in ultracold fermionic atomic ($UCFAG$) gases is studied in the model of "isotopic-spin" pairing proposed in 1991 \\cite% {Ku-Hof-SSC}. This model assumes a mismatch ($\\delta $) in chemical potentials of pairing fermionic atoms. It is shown that a $\\pi $-Josephson junction can be realized in $UCFAG$ systems, where the left and right banks $% S$ are the $UCFAG$ superfluids. The weak link $M$ consists from the normal $% UCFAG$ with the finite mismatch $\\delta $. If the $\\pi $-junction is a part of a closed ring the superfluid mass-current flows spontaneously in the ring, i.e., the time-reversal symmetry is broken spontaneously. This is realized if the radius of the ring $R$ is larger than the critical one $% R_{c} $. All these effects exist also in the case when $\\delta \\gg \\Delta $, where $\\Delta $ is the superfluid gap, but with the reduced thickness of the weak link. It is also discussed, that if junctions $SM_{1}M_{2}S$ and trilayers $% M_{1}SM_{2}$ from $UCFAG$ are realizable this renders a possibility for a novel electronics - \\textit{hypertronics}.

Miodrag L. Kulic

2006-05-25T23:59:59.000Z

413

Fowler-Nordheim Electron Cold Emission Formalism in Presence of Strong Magnetic Field  

E-Print Network (OSTI)

Formalisms for both non-relativistic as well as relativistic versions of field emission of electrons in presence of strong quantizing magnetic field, relevant for strongly magnetized neutron stars or magnetars are developed. In the non-relativistic scenario, where electrons obey Schr{$\\ddot{\\rm{o}}$}dinger equation, we have noticed that when Landau levels are populated for electrons in presence of strong quantizing magnetic field the transmission probability exactly vanishes unless the electrons are spin polarized in the opposite direction to the external magnetic field. On the other hand, the cold electron emission under the influence of strong electrostatic field at the poles is totally forbidden from the surface of those compact objects for which the surface magnetic field strength is $\\gg 10^{15}$G (in the eventuality that they may exist). Whereas in the relativistic case, where the electrons obey Dirac equation, the presence of strong quantizing magnetic field completely forbids the emission of electrons from the surface of compact objects if $B >10^{13}$G.

Arpita Ghosh; Somenath Chakrabarty

2012-06-14T23:59:59.000Z

414

Xylose fermentation to ethanol. A review  

SciTech Connect

The past several years have seen tremendous progress in the understanding of xylose metabolism and in the identification, characterization, and development of strains with improved xylose fermentation characteristics. A survey of the numerous microorganisms capable of directly fermenting xylose to ethanol indicates that wild-type yeast and recombinant bacteria offer the best overall performance in terms of high yield, final ethanol concentration, and volumetric productivity. The best performing bacteria, yeast, and fungi can achieve yields greater than 0.4 g/g and final ethanol concentrations approaching 5%. Productivities remain low for most yeast and particularly for fungi, but volumetric productivities exceeding 1.0 g/L-h have been reported for xylose-fermenting bacteria. In terms of wild-type microorganisms, strains of the yeast Pichia stipitis show the most promise in the short term for direct high-yield fermentation of xylose without byproduct formation. Of the recombinant xylose-fermenting microorganisms developed, recombinant E. coli ATTC 11303 (pLOI297) exhibits the most favorable performance characteristics reported to date.

McMillan, J.D.

1993-01-01T23:59:59.000Z

415

Xylose fermentation to ethanol  

SciTech Connect

The past several years have seen tremendous progress in the understanding of xylose metabolism and in the identification, characterization, and development of strains with improved xylose fermentation characteristics. A survey of the numerous microorganisms capable of directly fermenting xylose to ethanol indicates that wild-type yeast and recombinant bacteria offer the best overall performance in terms of high yield, final ethanol concentration, and volumetric productivity. The best performing bacteria, yeast, and fungi can achieve yields greater than 0.4 g/g and final ethanol concentrations approaching 5%. Productivities remain low for most yeast and particularly for fungi, but volumetric productivities exceeding 1.0 g/L-h have been reported for xylose-fermenting bacteria. In terms of wild-type microorganisms, strains of the yeast Pichia stipitis show the most promise in the short term for direct high-yield fermentation of xylose without byproduct formation. Of the recombinant xylose-fermenting microorganisms developed, recombinant E. coli ATTC 11303 (pLOI297) exhibits the most favorable performance characteristics reported to date.

McMillan, J.D.

1993-01-01T23:59:59.000Z

416

Search for the Higgs Boson Decaying to Two Tau Leptons in Proton-Antiproton Collisions at a Center of Mass Energy of 1.96 TeV  

E-Print Network (OSTI)

A search for the Higgs boson decaying to tau tau using 7.8 fb^-1 of pp collisions at 1.96 TeV collected with CDF II detector is presented. The search is sensitive to four production mechanisms of the Higgs boson: ggH, WH, ZH and VBF. Modes where one tau decay leptonically, and another decay, hadronically, are considered. Two novel techniques are developed and used in the search. A Probabilistic Particle Flow Algorithm is used for energy measurements of the hadronic tau candidates. The signal is discriminated from backgrounds by the Missing Mass Calculator, which allows for full invariant mass reconstruction of tau tau pair. The data are found to be consistent with the background only hypothesis. Therefore a 95% confidence level upper limit on the Standard Model Higgs boson cross section was set. At M_H=120 GeV/c^2 observed limit is 14.9 x sigma_SM x Br(H -> tau tau).

Elagin, Andrey

2011-12-01T23:59:59.000Z

417

Capacity and Character Expansions: Moment generating function and other exact results for MIMO correlated channels  

E-Print Network (OSTI)

We apply a promising new method from the field of representations of Lie groups to calculate integrals over unitary groups, which are important for multi-antenna communications. To demonstrate the power and simplicity of this technique, we first re-derive a number of results that have been used recently in the community of wireless information theory, using only a few simple steps. In particular, we derive the joint probability distribution of eigenvalues of the matrix GG*, with G a semicorrelated Gaussian random matrix or a Gaussian random matrix with a non-zero mean (and G* its hermitian conjugate) . These joint probability distribution functions can then be used to calculate the moment generating function of the mutual information for Gaussian channels with multiple antennas on both ends with this probability distribution of their channel matrices G. We then turn to the previously unsolved problem of calculating the moment generating function of the mutual information of MIMO (multiple input-multiple output) channels, which are correlated at both the receiver and the transmitter. From this moment generating function we obtain the ergodic average of the mutual information and study the outage probability. These methods can be applied to a number of other problems. As a particular example, we examine unitary encoded space-time transmission of MIMO systems and we derive the received signal distribution when the channel matrix is correlated at the transmitter end.

Steven H. Simon; Aris L. Moustakas; Luca Marinelli

2005-09-27T23:59:59.000Z

418

Pilot-scale production of dicesium hexachloroplutonate (Cs/sub 2/PuCl/sub 6/) and filtrate recovery  

SciTech Connect

The Rocky Flats Plant is introducing the use of dicesium hexachloroplutonate (DCHP) into the Molten Salt Extraction Process (MSE). DCHP (Cs/sub 2/PuCl/sub 6/) extracts americium from molten plutonium metal into a molten calcium chloride matrix. The DCHP is produced by precipitating plutonium (IV) from hydrochloric acid with cesium chloride. Before production of the DCHP began, we performed a pilot-scale test to determine yields, track impurities, and test filtrate recovery for the proposed process. In the course of this study, we determined that impure plutonium oxide (0.80 g/g) dissolved in concentrated HCl is an acceptable source of plutonium for the DCHP. We also determined that dissolved oxide and chloride anion exchange eluate can be mixed for DCHP preparation. We found that DCHP yields average 92-95% at 8M total chloride and are independent of sparging rate and time. Furthermore, we found that drying at 150/degree/C for 5 hr gives <0.1% water in the DCHP only if it is preceeded by extensive air drying. Finally, we proved the efficiency of chloride anion exchange for the recovery of above-discard plutonium from the filtrate. 11 refs., 1 fig., 11 tabs.

Muscatello, A.C.; Stevens, J.R.; Killion, M.E.; Valdez, J.D.; Ames, R.L.

1989-03-15T23:59:59.000Z

419

Micellar solubilization of polynuclear aromatic hydrocarbons in coal tar-contaminated soils  

SciTech Connect

Solubilization of PAHs from a coal tar-contaminated soil obtained from a manufactured gas plant (MGP) site was evaluated using nonionic polyoxyethylene surfactants at dosages greater than cmc. Up to 25% of Soxhlet-extractable PAHs could be solubilized at surfactant loadings of 0.3 g/g of oil in 16 days in completely stirred batch reactors. Longer periods were required to reach equilibrium at higher surfactant dosages. Raoult`s law satisfactorily described the partitioning of constituent PAHs between the weathered coal tar and the micellar solution. An equilibrium model was developed to predict the solubilization of PAHs from coal tar-contaminated soils for given properties of the soil, surfactant, and component PAHs. The model predicted solubilization of constituent PAHs reasonably well at low surfactant dosages. At extremely high surfactant dosages, the model failed to reliably predict solubilization. Presumably, mass transfer mass transfer limitations prevented the attainment of equilibrium during the duration (380h) of solubilization experiments. 25 refs., 6 figs., 4 tabs.

Yeom, I.T.; Ghosh, M.M.; Cox, C.D.; Robinson, K.G. [Univ. of Tennessee, Knoxville, TN (United States)

1995-12-01T23:59:59.000Z

420

Measurement of Neutron Background at the Pyhasalmi mine for CUPP Project, Finland  

E-Print Network (OSTI)

A natural neutron flux is one of significant kind of background in high-sensitive underground experiments. Therefore, when scheduling a delicate underground measurements one needs to measure neutron background. Deep underground the most significant source of neutrons are the U-Th natural radioactive chains giving a fission spectrum with the temperature of 2-3 MeV. Another source is the U-Th alpha-reactions on light nuclei of mine rock giving neutrons with different spectra in the 1-15 MeV energy region. Normal basalt mine rocks contain 1 ppm g/g of U-238 and less. Deep underground those rocks produce natural neutron fluxes of 10^{-7} - 10^{-6} cm^{-2}s^{-1} above 1 MeV. To measure such a background one needs a special techniques. In the Institute for Nuclear Research, Moscow, the neutron spectrometer was developed and built which is sensitive to such a low neutron fluxes. At the end of 2001 the collection of neutron data at the Pyhasalmi mine was started for the CUPP project. During 2002 the background and rough energy spectra of neutron at underground levels 410, 660, 990 and 1410 m were measured. The result of the measurement of the neutron background at different levels of the Pyhasalmi mine is presented and discussed. Data analysis is performed in different energy ranges from thermal neutrons up to 25 MeV and above.

J. N. Abdurashitov; V. N. Gavrin; V. L. Matushko; A. A. Shikhin; V. E. Yants; J. Peltoniemi; T. Keranen

2006-07-20T23:59:59.000Z

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421

Stability and semiclassics in self-generated fields  

E-Print Network (OSTI)

We consider non-interacting particles subject to a fixed external potential $V$ and a self-generated magnetic field $B$. The total energy includes the field energy $\\beta \\int B^2$ and we minimize over all particle states and magnetic fields. In the case of spin-1/2 particles this minimization leads to the coupled Maxwell-Pauli system. The parameter $\\beta$ tunes the coupling strength between the field and the particles and it effectively determines the strength of the field. We investigate the stability and the semiclassical asymptotics, $h\\to0$, of the total ground state energy $E(\\beta, h, V)$. We formulate a conjecture concerning the $h\\to 0$ asymptotic behavior of $E(\\beta, h, V)$ uniformly in $\\beta$ and we prove the corresponding upper bound. We are able to prove the matching lower bound only in the weak field regime where $\\beta\\gg h^{-1}$. In the strong field regime our lower bound is not optimal, but we can show that the inclusion of the field energy with a sufficiently small $\\beta$ does affect the...

Erdos, Laszlo; Solovej, Jan Philip

2011-01-01T23:59:59.000Z

422

Physical aging and relaxation of residual stresses in a colloidal glass following flow cessation  

E-Print Network (OSTI)

Dilute Laponite suspensions in water at low salt concentration form repulsive colloidal glasses which display physical aging. This phenomenon is still not completely understood and in particular, little is known about the connection between the flow history, as a determinant of the initial state of the system, and the subsequent aging dynamics. Using a stress controlled rheometer, we perform stress jump experiments to observe the elastic component of the flow stress that remains on cessation of flow or flow quenching. We investigate the connection between the dynamics of these residual stresses and the rate of physical aging upon quenching from different points on the steady state flow curve. Quenching from high rates produces a fluid state, G">G', with small, fast relaxing residual stresses and rapid, sigmoidal aging of the complex modulus. Conversely, quenching from lower shear rates produces increasingly jammed states featuring slowly relaxing stresses and a slow increase of the complex modulus with system age. Flow cessation from a fixed shear rate with varying quench durations shows that slower quenches produce smaller residual stresses at short times which relax at long times by smaller extents, by comparison with faster quenches. These smaller stresses are correlated with a higher modulus but slower physical aging of the system. The characteristic time for the residual stress relaxation scales inversely with the quench rate. This implies a frustrated approach to any ideal stress-free state that succinctly reflects the frustrated nature of these glassy systems.

Ajay Singh Negi; Chinedum O. Osuji

2010-04-09T23:59:59.000Z

423

1 Modules and exactness  

E-Print Network (OSTI)

Suppose that R is an associative ring with 1. In most commutative cases, R is either the integers Z or some field k. Example: Suppose that k is a field and G is a group. The group-algebra k(G) over k is the direct sum k(G) = ? k, g?G with elements written as finite sums ? g?G ?g g, with ?g ? k and all but finitely many ?g = 0. The rule (?g g)(?h h) = (?g?h) (gh) defines the algebra structure on k(G), with multiplicative identity 1 = 1 e, where e is the identity element of G. A k(G)-module M is a k-vector space M, with bilinear map ? : k(G) M ? M with (r, m) ? ? r?m, such that r?(s?m) = (rs)? m and 1 ? m = m, or equivalently M is a k-vector 1 space equipped with a group homomorphism G ? Autk(M). k(G)-modules are often called G-modules for that reason. Not even that is the most enlightened way to describe a k(G)-module. A group G can be thought of as a category (actually a groupoid) with one object ? and a morphism ? g ? ? ? for every g ? G. Then a k(G)-module is a functor M: G ? k ? Mod which takes values in the category of k-vector spaces. NB: Ive only based these notions on fields k and their vector spaces to make them seem real. The object k could be a ring; then k(G) is a k-algebra still and a k(G)-module is a k-module M equipped with a group homomorphism G ? Autk(M). Now we recall some basic definitions and facts about R-modules. Suppose that f: M ? N is an R-module homomorphism. Then the kernel ker(f) of f is defined by ker(f) = {all x ? M such that f(x) = 0}. ker(f) is plainly a submodule of M. The image 2 im(f) of f is the submodule of N consisting of all y ? N such that y = f(x) for some x ? M. The cokernel of f cok(f) is defined to be the quotient A sequence cok(f) = N / im(f). M f ? ? M ? g ? ? M of R-module homomorphisms is said to be exact if ker(g) = im(f). Equivalently, the sequence is exact if g f = 0 and for all y ? M ? with g(y) = 0 there is an x ? M such that f(x) = y. A sequence M1 ? M2 ? ? Mn of R-module homomorphisms is said to be exact if ker = im everywhere. Example 1.1. The sequence 0 ? ker(f) ? M f ? ? N ? cok(f) ? 0 is exact for all R-module homomorphisms f. Note that 0 ? M f ? ? N is exact if and only if f is a monomorphism (injective), and that

unknown authors

2009-01-01T23:59:59.000Z

424

The ground state of the Kondo model with large spin  

E-Print Network (OSTI)

In this paper, we prove that the ground state of the Kondo model with large spin is nondegenerate, apart from a SU(2) spin degeneracy in the case of half filling. The ground state spin is found for the system, and the energy level orderings are discussed. Finally, the existence of ferrimagnetism in some cases is proved. PACS numbers: 75.10.Lp 75.30.Mb, 75.50.Gg The Kondo models, or single and lattice impurity models, are one of the most challenging subjects in strongly correlated systems 13. Recent developments of reflection positivity technique in the spin space make it possible to establish some rigorous results for the half-filled strongly correlated electron systems 49. Theory of reflection positivity in the spin space for the single- and multi-channel Kondo models with spin 1/2 was developed recently and a series of rigorous results on the ground state properties were proved 8,9. However some materials are described by the Kondo models with large spin, such as (La1?xXx)MnO3 with X = Ba, Ca, Sr etc. and the localised spin s = 3/2 10. Due to more degrees of freedom in the case of large spin than in the case of spin 1/2, usually it is very hard to extract rigorous results for those systems. As a generalisation of the theory for the Kondo model with spin 1/2, we will investigate the Kondo model with large spin and provide some rigorous results on the ground state of the Kondo model in the case of half filling. Let us first write down the Hamiltonian we will investigate:

Shun-qing Shen; Jisi Sci; Kijsi Sj

1996-01-01T23:59:59.000Z

425

Connecting the Physical Properties of Galaxies with the Overdensity and Tidal Shear of the Large-Scale Environment  

E-Print Network (OSTI)

We have examined the correlations between the large-scale environment of galaxies and their physical properties, using a sample of 28,354 nearby galaxies drawn from the Sloan Digital Sky Survey, and the large-scale tidal field reconstructed in real space from the 2Mass Redshift Survey and smoothed over a radius of $\\sim 6 h^{-1}$Mpc. The large-scale environment is expressed in terms of the overdensity, the ellipticity of the shear and the type of the large-scale structure. The physical properties analyzed include $r$-band absolute magnitude $M_{^{0.1}r}$, stellar mass $M_\\ast$, $g-r$ colour, concentration parameter $R_{90}/R_{50}$ and surface stellar mass density $\\mu_\\ast$. Both luminosity and stellar mass are found to be statistically linked to the large-scale environment, regardless of how the environment is quantified. More luminous (massive) galaxies reside preferentially in the regions with higher densities, lower ellipticities and halo-like structures. At fixed luminosity, the large-scale overdensity depends strongly on parameters related to the recent star formation history, that is colour and D(4000), but is almost independent of the structural parameters $R_{90}/R_{50}$ and $\\mu_\\ast$. All the physical properties are statistically linked to the shear of the large-scale environment even when the large-scale density is constrained to a narrow range. This statistical link has been found to be most significant in the quasi-linear regions where the large-scale density approximates to an order of unity, but no longer significant in highly nonlinear regimes with $\\delta_{\\rm LS}\\gg 1$.

Jounghun Lee; Cheng Li

2008-03-12T23:59:59.000Z

426

Polarization radiation of vortex electrons with large orbital angular momentum  

E-Print Network (OSTI)

Vortex electrons, - freely propagating electrons whose wavefunction has helical wavefronts, - could become a novel tool in the physics of electromagnetic radiation. They carry a non-zero intrinsic orbital angular momentum (OAM) $\\ell$ with respect to the propagation axis and, for \\ell \\gg 1, a large OAM-induced magnetic moment, \\mu ~ \\ell \\mu_B (\\mu_B is the Bohr magneton), which influences the radiation of electromagnetic waves. Here, we consider in detail the OAM-induced effects by such electrons in two forms of polarization radiation, namely in Cherenkov radiation and transition radiation. Thanks to the large \\ell, we can neglect quantum or spin-induced effects, which are of the order of \\hbar \\omega/E_e \\ll 1, but retain the magnetic moment contribution \\ell \\hbar \\omega/E_e \\lesssim 1, which makes the quasiclassical approach to polarization radiation applicable. We discuss the magnetic moment contribution to polarization radiation, which has never been experimentally observed, and study how its visibility depends on the kinematical parameters and the medium permittivity. In particular, it is shown that this contribution can, in principle, be detected in azimuthally non-symmetrical problems, for example when vortex electrons obliquely cross a metallic screen (transition radiation) or move nearby it (diffraction radiation). We predict a left-right angular asymmetry of the transition radiation (in the plane where the charge radiation distributions would stay symmetric), which appears due to an effective interference between the charge radiation field and the magnetic moment one. Numerical values of this asymmetry for vortex electrons with E_e = 300keV and \\ell = O(100-1000) are O(0.1-1%), and we argue that this effect could be detected with existing technology. The finite conductivity of the target and frequency dispersion play the crucial roles in these predictions.

Igor P. Ivanov; Dmitry V. Karlovets

2013-05-28T23:59:59.000Z

427

Bioeconomy Initiative at MBI International  

DOE Green Energy (OSTI)

Di-carboxylic acids have the potential to replace petrochemicals used in the polymer industry (Werpy and Petersen, 2004). MBI developed a process for the production of succinic acid using a proprietary organism. During this work MBI assessed the feasibility to produce other carboxylic acids either using A. succinogenes or other organisms. The development of recombinant A. succinogenes strain derivatives for a mono-carboxylic acid through over-expression of enzymatic activities was successful. Fermentations achieved titers of 58 g/L for this organic acid. Recombinant strains that produced the same acid, but a different stereoisomer, reached titers of 10 g/L. Attempts to increase the titers for this isomer as well as other organic acids were unsuccessful. MBI is looking for commercial partners to pursue the development of recombinant A. succinogenes strains for the production of other organic acids. Attempts to develop recombinant strains of A. succinogenes for fumaric acid production through introduction of various antisense RNA constructs were unsuccessful. Alternative suitable organisms were evaluated and Rhizopus oryzae, a natural fumaric acid producer with potential for process improvements, was selected. A novel fermentation and one-step recovery process was developed that allowed capture of IP, produced titers of >80 g/L with a productivity of 1.8 g/L-h and 57% (g/g glucose) yield. The process was scaled to 2000 L pilot scale. The economic analysis projected a production cost of 72 c/lb. Recycling and re-use of the base was demonstrated and incorporated into the process. The ability of the organism to produce fumaric acid from other carbon sources and biomass hydrolysate was demonstrated. The production of other organic acids was evaluated and techno-economic de-risking roadmap documents were prepared.

Kleff, Susanne, Ph.D.

2011-11-30T23:59:59.000Z

428

On Diagonalization in Map(M,G)  

E-Print Network (OSTI)

Motivated by some questions in the path integral approach to (topological) gauge theories, we are led to address the following question: given a smooth map from a manifold $M$ to a compact group $G$, is it possible to smoothly `diagonalize' it, i.e.~conjugate it into a map to a maximal torus $T$ of $G$? We analyze the local and global obstructions and give a complete solution to the problem for regular maps. We establish that these can always be smoothly diagonalized locally and that the obstructions to doing this globally are non-trivial Weyl group and torus bundles on $M$. We show how the patching of local diagonalizing maps gives rise to non-trivial $T$-bundles, explain the relation to winding numbers of maps into $G/T$ and restrictions of the structure group and examine the behaviour of gauge fields under this diagonalization. We also discuss the complications that arise for non-regular maps and in the presence of non-trivial $G$-bundles. In particular, we establish a relation between the existence of regular sections of a non-trivial adjoint bundle and restrictions of the structure group of a principal $G$-bundle to $T$. We use these results to justify a Weyl integral formula for functional integrals which, as a novel feature not seen in the finite-dimensional case, contains a summation over all those topological $T$-sectors which arise as restrictions of a trivial principal $G$ bundle and which was used previously to solve completely Yang-Mills theory and the $G/G$ model in two dimensions.

Matthias Blau; George Thompson

1994-02-16T23:59:59.000Z

429

Novel carbons from Illinois coal for natural gas storage. Quarterly report, 1 December 1994--28 February 1995  

DOE Green Energy (OSTI)

The goal of this project is to develop a technology for producing microengineered adsorbent carbons from Illinois coal and to evaluate the potential application of these novel materials for storing natural gas for use in emerging low pressure, natural gas vehicles (NGV). The focus of the project is to design and engineer adsorbents that meet or exceed the performance and cost targets established for low-pressure natural gas storage materials. Potentially, about two million tons of adsorbent could be consumed in natural gas vehicles by year 2000. If successful, the results obtained in this project could lead to the use of Illinois coal in a sowing and profitable market that could exceed 6 million tons per year. During this reporting period, a series of experiments were made to evaluate the effect of coal pre-oxidation, coal pyrolysis, and char activation on the surface area development and methane adsorption capacity of activated carbons/chars made from IBC-102. The optimum production conditions were determined to be: coal oxidation in air at 225C, oxicoal (oxidized coal); devolatilization in nitrogen at 400C; and char gasification in 50% steam in nitrogen at 850C. Nitrogen BET surface areas of the carbon products ranged from 800--1100 m{sup 2}/g. Methane adsorption capacity of several Illinois coal derived chars and a 883 m{sup 2}/g commercial activated carbon were measured using a pressurized thermogaravimetric analyzer at pressures up to 500 psig. Methane adsorption capacity (g/g) of the chars were comparable to that of the commercial activated carbon manufactured by Calgon Carbon. It was determined that the pre-oxidation is a key processing step for producing activated char/carbon with high surface area and high methane adsorption capacity. The results to date are encouraging and warrant further research and development in tailored activated char from Illinois coal for natural gas storage.

Rostam-Abadi, M.; Sun, Jian; Lizzio, A.A. [Illinois State Geological Survey, Urbana, IL (United States); Fatemi, M. [Sperry Univac, St. Paul, MN (United States)

1995-12-31T23:59:59.000Z

430

Model-independent extraction of $|V_{tq}|$ matrix elements from top-quark measurements at hadron colliders  

E-Print Network (OSTI)

Current methods to extract the quark-mixing matrix element $|V_{tb}|$ from single-top production measurements assume that $|V_{tb}|\\gg |V_{td}|, |V_{ts}|$: top quarks decay into $b$ quarks with 100% branching fraction, s-channel single-top production is always accompanied by a $b$ quark and initial-state contributions from $d$ and $s$ quarks in the $t$-channel production of single top quarks are neglected. Triggered by a recent measurement of the ratio $R=\\frac{|V_{tb}|^{2}}{|V_{td}|^{2}+|V_{ts}|^{2}+|V_{tb}|^{2}}=0.90 \\pm 0.04$ performed by the D0 collaboration, we consider a $|V_{tb}|$ extraction method that takes into account non zero d- and s-quark contributions both in production and decay. We propose a strategy that allows to extract consistently and in a model-independent way the quark mixing matrix elements $|V_{td}|$, $|V_{ts}|$, and $|V_{tb}|$ from the measurement of $R$ and from single-top measured event yields. As an illustration, we apply our method to the Tevatron data using a CDF analysis of the measured single-top event yield with two jets in the final state one of which is identified as a $b$-quark jet. We constrain the $|V_{tq}|$ matrix elements within a four-generation scenario by combining the results with those obtained from direct measurements in flavor physics and determine the preferred range for the top-quark decay width within different scenarios.

H. Lacker; A. Menzel; F. Spettel; D. Hirschbhl; J. Lck; F. Maltoni; W. Wagner; M. Zaro

2012-02-21T23:59:59.000Z

431

THE HIGGS WORKING GROUP: SUMMARY REPORT.  

SciTech Connect

This working group has investigated Higgs boson searches at the Tevatron and the LHC. Once Higgs bosons are found their properties have to be determined. The prospects of Higgs coupling measurements at the LHC and a high-energy linear e{sup +}e{sup -} collider are discussed in detail within the Standard Model and its minimal supersymmetric extension (MSSM). Recent improvements in the theoretical knowledge of the signal and background processes are presented and taken into account. The residual uncertainties are analyzed in detail. Theoretical progress is discussed in particular for the gluon-fusion processes gg {yields} H(+j), Higgs-bremsstrahlung off bottom quarks and the weak vector-boson-fusion (VBF) processes. Following the list of open questions of the last Les Houches workshop in 2001 several background processes have been calculated at next-to-leading order, resulting in a significant reduction of the theoretical uncertainties. Further improvements have been achieved for the Higgs sectors of the MSSM and NMSSM. This report summarizes our work performed before and after the workshop in Les Houches. Part A describes the theoretical developments for signal and background processes. Part B presents recent progress in Higgs boson searches at the Tevatron collider. Part C addresses the determination of Higgs boson couplings, part D the measurement of tan {beta} and part E Higgs boson searches in the VBF processes at the LHC. Part F summarizes Higgs searches in supersymmetric Higgs decays, part G photonic Higgs decays in Higgs-strahlung processes at the LHC, while part H concentrates on MSSM Higgs bosons in the intense-coupling regime at the LHC. Part I presents progress in charged Higgs studies and part J the Higgs discovery potential in the NMSSM at the LHC. The last part K describes Higgs coupling measurements at a 1 TeV linear e{sup +}e{sup -} collider.

DAWSON, S.; ET AL.

2005-08-01T23:59:59.000Z

432

Structure of Resonance in Preheating after Inflation  

E-Print Network (OSTI)

We consider preheating in the theory $1/4 \\lambda \\phi^4 + 1/2 g^2\\phi^2\\chi^2 $, where the classical oscillating inflaton field $\\phi$ decays into $\\chi$-particles and $\\phi$-particles. The parametric resonance which leads to particle production in this conformally invariant theory is described by the Lame equation. It significantly differs from the resonance in the theory with a quadratic potential. The structure of the resonance depends in a rather nontrivial way on the parameter $g^2/\\lambda$. We construct the stability/instability chart in this theory for arbitrary $g^2/\\lambda$. We give simple analytic solutions describing the resonance in the limiting cases $g^2/\\lambda\\ll 1$ and $g^2/\\lambda \\gg 1$, and in the theory with $g^2=3\\lambda$, and with $g^2 =\\lambda$. From the point of view of parametric resonance for $\\chi$, the theories with $g^2=3\\lambda$ and with $g^2 =\\lambda$ have the same structure, respectively, as the theory $1/4 \\lambda \\phi^4$, and the theory $\\lambda /(4 N) (\\phi^2_i)^2$ of an N-component scalar field $\\phi_i$ in the limit $N \\to \\infty$. We show that in some of the conformally invariant theories such as the simplest model $1/4 \\lambda\\phi^4$, the resonance can be terminated by the backreaction of produced particles long before $$ or $phi^2 >$ become of the order $\\phi^2$. We analyze the changes in the theory of reheating in this model which appear if the inflaton field has a small mass.

Patrick Greene; Lev Kofman; Andrei Linde; Alexei Starobinsky

1997-05-19T23:59:59.000Z

433

A new white dwarf constraint on the rate of change of the gravitational constant  

E-Print Network (OSTI)

In this paper we derive a bound on the rate of change of the gravitational constant G coming from the pulsating white dwarf G117-B15A. This star is a ZZ Ceti pulsator extensively studied with astroseismological techniques for last three decades. The most recent determination of {\\dot P} = (2.3 \\pm 1.4) * 10^{-15} s/s^{-1} for the 215.2s fundamental mode agrees very well with predictions of the best fit theoretical model. The rate of change of the oscillation period can be explained by two effects: the cooling (dominant factor) and change of gravitational binding energy (residual gravitational contraction). Since the white dwarfs are pulsating in g-modes whose frequencies are related to the Brunt-Vaisala frequency (explicitly dependent on G) observational determination of the change of the period (more precisely the difference between observed and calculated \\dot P) can be used to set the upper bound on the rate of change of G. In the light of the current data concerning G117-B15A we derive the following bound: |{\\frac {\\dot G}{G}}| \\leq 4.10 \\times 10^{-10} yr^{-1}. Our result is model independent in the sense that it does not need to invoke a concrete physical theory (such like Brans-Dicke theory)underlying the temporal variability of G. We also demonstrate that varying gravitational constant G does not modify cooling of white dwarfs in a significant way. This result implies that some earlier claims present in the literature that varying G can be reflected in the WD luminosity function are not correct.

Marek Biesiada; Beata Malec

2003-03-21T23:59:59.000Z

434

HSPB1 Gene Polymorphisms Predict Risk of Mortality for US Patients After Radio(chemo)therapy for Non-Small Cell Lung Cancer  

SciTech Connect

Purpose: We investigated potential associations between single-nucleotide polymorphisms (SNPs) in the heat shock protein beta-1 (HSPB1) gene and overall survival in US patients with non-small cell lung cancer (NSCLC). Methods and Materials: Using available genomic DNA samples from 224 patients with NSCLC treated with definitive radio(chemo)therapy, we genotyped 2 SNPs of HSPB1 (NCBI SNP nos. rs2868370 and rs2868371). We used both Kaplan-Meier cumulative probability and Cox proportional hazards analyses to evaluate the effect of HSPB1 genotypes on survival. Results: Our cohort consisted of 117 men and 107 women, mostly white (79.5%), with a median age of 70 years. The median radiation dose was 66 Gy (range, 63-87.5 Gy), and 183 patients (82%) received concurrent platinum-based chemotherapy. The most common genotype of the rs2868371 SNP was CC (61%). Univariate and multivariate analyses showed that this genotype was associated with poorer survival than CG and GG genotypes (univariate hazard ratio [HR] = 1.39, 95% confidence interval [CI], 1.02-1.90; P=.037; multivariate HR = 1.39; 95% CI, 1.01-1.92; P=.045). Conclusions: Our results showed that the CC genotype of HSPB1 rs2868371 was associated with poorer overall survival in patients with NSCLC after radio(chemo)therapy, findings that contradict those of a previous study of Chinese patients. Validation of our findings with larger numbers of similar patients is needed, as are mechanical and clinical studies to determine the mechanism underlying these associations.

Xu Ting [Institute of Clinical Pharmacology, Central South University, Changsha, Hunan (China) [Institute of Clinical Pharmacology, Central South University, Changsha, Hunan (China); Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Wei Qingyi [Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Lopez Guerra, Jose Luis [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States) [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Department of Radiation Oncology, Instituto Madrileno de Oncologia/Grupo IMO, Madrid (Spain); Wang Lie; Liu Zhensheng [Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Gomez, Daniel; O'Reilly, Michael; Lin, Steven Hsesheng [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Zhuang Yan [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Levy, Lawrence B. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Mohan, Radhe [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Zhou Honghao [Institute of Clinical Pharmacology, Central South University, Changsha, Hunan (China)] [Institute of Clinical Pharmacology, Central South University, Changsha, Hunan (China); Liao Zhongxing, E-mail: zliao@mdanderson.org [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

2012-10-01T23:59:59.000Z

435

Ethanol Production from Rice-Straw Hydrolysate Using Zymomonas Mobilis in a Continuous Fluidized-Bed Reactor (FBR)  

DOE Green Energy (OSTI)

Rice-straw hydrolysate obtained by the Arkenol's concentrated acid hydrolysis process was fermented to ethanol using a recombinant Zymomonas mobilis strain capable of utilizing both glucose and xylose in a continuous fluidized-bed reactor (FBR). The parameters studied included biocatalyst stability with and without antibiotic, feed composition, and retention time. Xylose utilization in the presence of tetracycline remained stable for at least 17 days. This was a significant improvement over the old strain, Z. mobilis CP4 (pZB5), which started to lose xylose utilization capability after seven days. In the absence of tetracycline, the xylose utilization rate started to decrease almost immediately. With tetracycline in the feed for the first six days, stability of xylose utilization was maintained for four days after the antibiotic was removed from the feed. The xylose utilization rate started to decrease on day 11. In the presence of tetracycline using the Arkenol's hydrolysate diluted to 48 g/L glucose and 13 g/L xylose at a retention time of 4.5 h, 95% xylose conversion and complete glucose conversion occurred. The ethanol concentration was 29 g/L, which gave a yield of 0.48 g/g sugar consumed or 94% of the theoretical yield. Using the Arkenol's hydrolysate diluted to 83 g/L glucose and 28 g/L xylose, 92% xylose conversion and complete glucose conversion were obtained. The ethanol concentration was 48 g/L, which gave a yield of 0.45 g/ g sugar consumed or 88% of the theoretical yield. Maximum productivity of 25.5 g/L-h was obtained at a retention time of 1.9 h. In this case, 84% xylose conversion was obtained.

deJesus, D.; Nghiem, N.P.

2001-01-01T23:59:59.000Z

436

You are now leaving Energy.gov | Department of Energy  

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

https://www2.dteenergy.com/wps/portal/dte/business/productsPrograms/details/SolarCurrents/Benefits/!ut/p/b1/hZHJkptAEES_xR-goaFpliMMO2ITi4AL0SBAQgPCEmL7ekt22I6xY2bqVhEvK6MyiZSIibTD46nGw-nS4bfnnjIZ5LZ2hELHCxRfBPouCilG9IEqkQ8geQKOsPPpJwCA_AQkVzM5qFrsp3r0Ww8-GAG81yOoc0APBCiGkKIA_cf_Y-AL_z0RBwnFSxd9UuS0OuKoAcAQE3F3tnlNnjT89kZeGoU3qykvYRGId7h2xuIXrVWAkB8FT0dOxyDBPloMd5vH8gaZphaDjZvaB97IvXLJ3XywZ6lnumS33PyKMpcseSVB1cmnuNJL5VTPVZ_XpaReAcmbcYobdf-278WF1qHjC6Pnq9poHtF-Ew9CMihkAvY4s7iqlsK1yPN_c_j_0S96NIj0lLcvU9G-gBcasZCGNE-xiIYMhR4ppb8OfNLzT-CzIr-q0tYubUkkD4z9i22B_zBiHWRTHKSAQBMBEQM685ul19fzumtWb7bz1AokeQLXcArkNbLDMwiGyLYlbyHZENi5B_w1Mq0VQ9_W3EO0C0VBuM1RQb3_nOUYSNGQ4jjEIMBCImoSepZofZL1OHs9DxpTkPe6nRyj_67nQuhgZYv7K4k37mEfJMd7MFZ3VCK-4SvOPWqp61mqVaTF0Lllm3aidRoHNTp2ZY15XVavOw8fQOLj0rX2r5mKp0rBaRqpNsOm0uF-y4yZ20yLSZuR2s1b1wwUgLSD0cistRwum-05MaIp70Cfc0ITOudmza5ULJPDzYhx3ze-cwT1Mpx7EG0nNF5NsTeyqC5dUqLHSA0vWUB7rTNzLkn0bRiG4xYZciXFq_DtBw5NexQ!/dl4/d5/L2dBISEvZ0FBIS9nQSEh/

437

Genome Enabled Discovery of Carbon Sequestration Genes in Poplar  

DOE Green Energy (OSTI)

The goals of the S.H. Strauss laboratory portion of 'Genome-enabled discovery of carbon sequestration genes in poplar' are (1) to explore the functions of candidate genes using Populus transformation by inserting genes provided by Oakridge National Laboratory (ORNL) and the University of Florida (UF) into poplar; (2) to expand the poplar transformation toolkit by developing transformation methods for important genotypes; and (3) to allow induced expression, and efficient gene suppression, in roots and other tissues. As part of the transformation improvement effort, OSU developed transformation protocols for Populus trichocarpa 'Nisqually-1' clone and an early flowering P. alba clone, 6K10. Complete descriptions of the transformation systems were published (Ma et. al. 2004, Meilan et. al 2004). Twenty-one 'Nisqually-1' and 622 6K10 transgenic plants were generated. To identify root predominant promoters, a set of three promoters were tested for their tissue-specific expression patterns in poplar and in Arabidopsis as a model system. A novel gene, ET304, was identified by analyzing a collection of poplar enhancer trap lines generated at OSU (Filichkin et. al 2006a, 2006b). Other promoters include the pGgMT1 root-predominant promoter from Casuarina glauca and the pAtPIN2 promoter from Arabidopsis root specific PIN2 gene. OSU tested two induction systems, alcohol- and estrogen-inducible, in multiple poplar transgenics. Ethanol proved to be the more efficient when tested in tissue culture and greenhouse conditions. Two estrogen-inducible systems were evaluated in transgenic Populus, neither of which functioned reliably in tissue culture conditions. GATEWAY-compatible plant binary vectors were designed to compare the silencing efficiency of homologous (direct) RNAi vs. heterologous (transitive) RNAi inverted repeats. A set of genes was targeted for post transcriptional silencing in the model Arabidopsis system; these include the floral meristem identity gene (APETALA1 or AP1), auxin response factor gene (ETTIN), the gene encoding transcriptional factor of WD40 family (TRANSPARENTTESTAGLABRA1 or TTG1), and the auxin efflux carrier (PIN-FORMED2 or PIN2) gene. More than 220 transgenic lines of the 1st, 2nd and 3rd generations were analyzed for RNAi suppression phenotypes (Filichkin et. al., manuscript submitted). A total of 108 constructs were supplied by ORNL, UF and OSU and used to generate over 1,881 PCR verified transgenic Populus and over 300 PCR verified transgenic Arabidopsis events. The Populus transgenics alone required Agrobacterium co-cultivations of 124.406 explants.

Filichkin, Sergei; Etherington, Elizabeth; Ma, Caiping; Strauss, Steve

2007-02-22T23:59:59.000Z

438

Volatile fatty acid fermentation of lime-treated bagasse by rumen microorganisms  

E-Print Network (OSTI)

This thesis describes the design and operation of a batch, anaerobic, in vitro fermentation of sugarcane bagasse by a mixed culture of ruminal microflora. The bagasse was supplemented with a small amount of alfalfa (0.16 g alfalfa/g bagasse) to provide necessary nutrients. The volatile fatty acid (VFA) product concentrations, yields and proportions of each acid for six different bagasse concentrations (10, 20, 35, 50, 75, and 100 g/L) are reported. Bagasse was treated with calcium hydroxide to increase the digestibility of the cell wall carbohydrates. The treatment conditions were: Ca(OH)2 loading = 10 g/100 g dry bagasse, water loading = 8.5 g/g dry bagasse, temperature 100'C, and treatment time = 1 hour. Compared to untreated bagasse, the lime-treated bagasse gave higher total VFA concentrations, faster rates of acidogenesis, and more stable molar proportions of individual VFA'S. The highest total VFA concentration obtained from lime-treated bagasse was 690 mM (45 g/L). By applying the lime pretreatment, the total VFA concentrations increased over 80% for a 10 g dry bagasse/L loading fermentation (from 4.5g VFA/L to 8.5 g VFAAL) With lime pretreatment, approximately 71 to 96% of the final total VFA yields were accomplished within the initial three days of fermentation, whereas only 52 to 67% were achieved without pretreatment during the same time period. At all solid loadings, the VFA molar compositions resulting from lime-treated bagasse were quite constant: acetate, 64-70%; propionate, 21-28%; butyrate, 6.5-7.6%; and other acids were about 1% each. In this thesis, we examined the effect of higher substrate concentration up to 100 g dry bagasse/L. For untreated bagasse, the VFA yields were fairly constant regardless of substrate concentration (ca. 0.37 g VFA/g dry substrate). However, for lime-treated bagasse, the total VFA yields decreased as the substrate concentrations increased. The best total VFA yield obtained from 10 g/L lime-treated bagasse was 0.63 g VFA/g dry raw substrate (or 0.82 g VFA/g dry ash-free substrate or 0.94 g VFA/g dry ash-free, lignin- free substrate). This is greater than yields previously reported in the literature using lignocellulosic substrates, and hence demonstrates the superiority of this very effective lime pretreatment.

Lee, Chang-Ming

1993-01-01T23:59:59.000Z

439

Waste-to-wheel analysis of anaerobic-digestion-based renewable natural gas pathways with the GREET model.  

SciTech Connect

In 2009, manure management accounted for 2,356 Gg or 107 billion standard cubic ft of methane (CH{sub 4}) emissions in the United States, equivalent to 0.5% of U.S. natural gas (NG) consumption. Owing to the high global warming potential of methane, capturing and utilizing this methane source could reduce greenhouse gas (GHG) emissions. The extent of that reduction depends on several factors - most notably, how much of this manure-based methane can be captured, how much GHG is produced in the course of converting it to vehicular fuel, and how much GHG was produced by the fossil fuel it might displace. A life-cycle analysis was conducted to quantify these factors and, in so doing, assess the impact of converting methane from animal manure into renewable NG (RNG) and utilizing the gas in vehicles. Several manure-based RNG pathways were characterized in the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model, and their fuel-cycle energy use and GHG emissions were compared to petroleum-based pathways as well as to conventional fossil NG pathways. Results show that despite increased total energy use, both fossil fuel use and GHG emissions decline for most RNG pathways as compared with fossil NG and petroleum. However, GHG emissions for RNG pathways are highly dependent on the specifics of the reference case, as well as on the process energy emissions and methane conversion factors assumed for the RNG pathways. The most critical factors are the share of flared controllable CH{sub 4} and the quantity of CH{sub 4} lost during NG extraction in the reference case, the magnitude of N{sub 2}O lost in the anaerobic digestion (AD) process and in AD residue, and the amount of carbon sequestered in AD residue. In many cases, data for these parameters are limited and uncertain. Therefore, more research is needed to gain a better understanding of the range and magnitude of environmental benefits from converting animal manure to RNG via AD.

Han, J.; Mintz, M.; Wang, M. (Energy Systems)

2011-12-14T23:59:59.000Z

440

The Higgs Working Group: Summary report  

SciTech Connect

In this working group we have investigated the prospects for Higgs boson searches at the Tevatron and LHC and, in particular, the potential of these colliders to determine the Higgs properties once these particles have been found. The analyses were done in the framework of the Standard Model (SM) and its supersymmetric extensions as the minimal (MSSM) and next-to-minimal (NMSSM) supersymmetric extensions. The work for the discovery potential of the LHC mainly concentrated on the difficult regions of previous analyses as those which are plagued by invisible Higgs decays and Higgs decays into supersymmetric particles. Moreover, the additional signatures provided by the weak vector-boson fusion process (WBF) have been addressed and found to confirm the results of previous analyses. A major experimental effort has been put onto charged Higgs boson analyses. The final outcome was a significant improvement of the discovery potential at the Tevatron and LHC than previous analyses suggested. For an accurate determination of Higgs boson couplings, the theoretical predictions for the signal and background processes have to be improved. A lot of progress has been made during and after this workshop for the gluon-fusion gg {yields} H + (0, 1, 2jets) and the associated t{bar t}H production process. A thorough study of the present theoretical uncertainties of signal and background processes has been initialized, culminating in a list of open theoretical problems. A problem of major experimental interest is the proper treatment of processes involving bottom quark densities, which is crucial for some important signal and background processes. Further theoretical improvements have been achieved for the MSSM Higgs boson masses and Higgs bosons in the NMSSM. This report summarizes our work. The first part deals with theoretical developments for the signal and background processes. The second part gives an overview of the present status of Higgs boson searches at the Tevatron. The third part analyzes invisible Higgs boson decays at the LHC and the forth part the Higgs boson search in the WBF channel. Part 5 summarizes the progress that has been achieved for A/H {yields} {tau}{sup +}{tau}{sup -}. decays in the MSSM. In part 6 the status of the Higgs boson search in t{bar t}H production is presented. Finally, part 7 describes the charged Higgs boson analyses in detail.

D. Cavalli et al.

2004-03-18T23:59:59.000Z

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441

COMPILATION AND ANALYSES OF EMISSIONS INVENTORIES FOR THE NOAA ATMOSPHERIC CHEMISTRY PROJECT. PROGRESS REPORT, AUGUST 1997.  

DOE Green Energy (OSTI)

Global inventories of anthropogenic emissions of oxides of nitrogen (NO{sub x}) for circa 1985 and 1990 and Non-Methane Volatile Organic Compounds (NMVOCs) for circa 1990 have been compiled by this project. Work on the inventories has been carried out under the umbrella of the Global Emissions Inventory Activity (GEIA) of the International Global Atmospheric Chemistry (IGAC) Program. The 1985 NO{sub x} inventory was compiled using default data sets of global emissions that were refined via the use of more detailed regional data sets; this inventory is being distributed to the scientific community at large as the GEIA Version 1A inventory. Global emissions of NO{sub x} for 1985 are estimated to be 21 Tg N y{sup -1}, with approximately 84% originating in the Northern Hemisphere. The 1990 inventories of NO{sub x} and NMVOCs were compiled using unified methodologies and data sets in collaboration with the Netherlands National Institute of Public Health and Environmental Protection (Rijksinstituut Voor Volksgezondheid en Milieuhygiene, RIVM) and the Division of Technology for Society of the Netherlands Organization for Applied Scientific Research, (IMW-TNO); these emissions will be used as the default estimates to be updated with more accurate regional data. The NMVOC inventory was gridded and speciated into 23 chemical categories. The resulting global emissions for 1990 are 31 Tg N yr{sup -1} for NO{sub x} and 173 Gg NMVOC yr{sup -1}. Emissions of NO{sub x} are highest in the populated and industrialized areas of eastern North America and across Europe, and in biomass burning areas of South America, Africa, and Asia. Emissions of NMVOCs are highest in biomass burning areas of South America, Africa, and Asia. The 1990 NO{sub x} emissions were gridded to 1{sup o} resolution using surrogate data, and were given seasonal, two-vertical-level resolution and speciated into NO and NO{sub 2} based on proportions derived from the 1985 GEIA Version 1B inventory. Global NMVOC emissions were given additional species resolution by allocating the 23 chemical categories to individual chemical species based on factors derived from the speciated emissions of NMVOCs in the U.S. from the U.S. EPA's 1990 Interim Inventory. Ongoing research activities for this project continue to address emissions of both NO{sub x} and NMVOCs. Future tasks include: (a) evaluation of more detailed regional emissions estimates and update of the default 1990 inventories with the appropriate estimates, (b) derivation of quantitative uncertainty estimates for the emission values, and (c) development of emissions estimates for 1995.

BENKOVITZ,C.M.

1997-09-01T23:59:59.000Z

442

The behavior of soil-applied cyclotri- and cyclotetraphosphate in Texas soils  

E-Print Network (OSTI)

Cyclotriphosphate (C3P) is of interest to soil scientists because it demonstrates little or no retention by soil constituents. Non-sorption is desirable in the development of mobile P fertilizers. Work was expanded to include cyclotetraphosphate (C4P), a larger but commercially unavailable cyclic P compound that is more stable than C3P in solution. High-purity C4P was prepared by ethanol precipitation of the hydrolysis products Of P4010. Improved methods of ion chromatography were applied to the analysis of cyclic P and all hydrolysis products extracted from soil using a water/0-5 M H2SO4/1 .0 M NAOH extraction procedure developed for this work. Separation and direct quantitative analysis of linear and cyclic polyphosphates were accomplished in less than 15 minutes. The rapidity and ease of these analyses represent a vast improvement over previous methods of polyphosphate analysis. Four diverse Texas soils received 1 00 and 400 gg cyclic P g-1 soil as either C3P or C4P and were incubated under different water, temperature, biological activity, and time regimes. The larger C4P was not appreciably sorbed in soil and was more stable than C3P under all conditions. Rate constants and the time to one half of initial P concentration were determined for each P. Kinetic data suggested that the hydrolysis of cyclic P in soils is complex, but cyclic P hydrolysis most likely follows first-order kinetics. The mechanism of C4P hydrolysis- particularly at low P application rates-may involve direct conversion of C4P to diphosphate and triphosphate (in addition to tetraphosphate), possibly due to phosphatase action in C4P hydrolysis. Temperature dependency of C3P and C4P hydrolysis was examined. All treatments showed Qlo treatments on Branyon clay). Nineteen soil parameters were examined for correlation with C3P and C4P hydrolysis. Numerous significant correlations (P < 0.05) were reported, but high intercorrelation among related soil factors was suspected, thus reducing the value of correlation analysis.

Trostle, Calvin Lewie

1993-01-01T23:59:59.000Z

443

Extractability Profiling and Antioxidant Activity of Flavonoids in Sorghum Grain and Non-grain Materials  

E-Print Network (OSTI)

Grains, leaves, sheaths, glumes and stalks of sorghum varieties were analyzed for total phenols, condensed tannins, flavan-4-ols, anthocyanins and in vitro antioxidant activity. Black sorghum bran was used to evaluate the effectiveness of organic acids and enzymes on extractability of phenols. Flavonoid profiles of grains and non-grain tissues were determined and characterized using HPLC-PDA and HPLC-ESI-MSn. The presence of a pigmented testa and spreader genes (B1B2S) is a predictor for polymeric flavonoids (tannins) but not for simple phenols such as flavan-4-ols, 3-deoxyanthocyanins, flavones and flavanones. Simple flavonoids increased antioxidant capacity of sorghum, and were present in all sorghum except for the white pericarp sorghums that did not have flavanones. The "red turning into black" gene increased phenols in Type I sorghum. The leaves, sheath and glumes of sorghum had higher levels of phenols (78-600 times more), with in vitro antioxidant properties than commonly seen in grains. Pigmentation of plant components increased levels of 3- deoxyanthocyanins but not flavones nor flavanones. The leaves of biomass sorghum, Collier variety, had 3.4 times more 3-deoxyanthocyanins than the leaves of Tx430 Black x Sumac which had the highest levels (1810 ?g/g) of 3- deoxyanthocyanins among the leaves. The use of 1% HCl/ethanol provides a possible food grade substitute solvent for 1%HCl/methanol in the extraction of phenolic compounds from sorghum. All enzymes evaluated broke down bran particles forming a gel-like material which had increased phenols and antioxidant activities but not 3- deoxyanthocyanins as revealed by HPLC analysis. Microscopy examination showed the gel matrix rich in fiber and can possibly be used for nutraceutical applications. Careful understanding of enzyme activities is necessary for effective extraction of 3-deoxyanthocyanins from sorghum. Sorghum leaves, sheaths and glumes are excellent sources of bioactive compounds, up to 600 times more than the grains of some varieties. Sorghum with the "red turning to black genes" is a potential source of 3- deoxyanthocyanins and flavan-4-ols. With the trend towards sorghum as biomass for ethanol production, plant breeders must select special traits aimed at developing enhanced desired functionality such as antioxidant potential and other healthy attributes with application in food, pharmaceutical/nutraceutical and cosmetic industries.

Njongmeta, Nenge Lynda A.

2009-05-01T23:59:59.000Z

444

Photoperiod and melatonin effects on growth and endocrine response in white-tailed deer (Odocoileus virginianus)  

E-Print Network (OSTI)

Captive white-tailed deer (Odocoileus virginianus) fawns (4-11 mo) were utilized to establish the role of endogenous versus exogenous melatonin on patterns of growth. A deuterium oxide (D20) dilution system was developed with I I fawns for estimation of body composition in deer. Empty body weight, water, lean body mass, protein, and fat were predicted with R2s of .989,.988,.985,.961,.656, respectively. Lean body mass and its'components, fat, and gut fill, were well predicted with the developed systems. Fawns were fed melatonin (5 mg/d at 2 h before sunset) or no melatonin, and fed high, medium, or low intake. Body composition was measured at four points, melatonin at six time points, and T3, T4, and IGF-I at ten time points during the experiment. Melatonin levels increased, as daylength declined from 10.9 to 10.3 h/d, from 74.3 pg/ml at day 12 to 120.7 pg/rnl at day 83, then decreased to 84.7 pg/ml at day 159, as daylength increased to 12.4 hr. Body fat, initially 2.33 kg, increased in short days to 3.19 kg, and then declined to 2.07 kg at day 159. Daily protein gain averaged 13 g/d in non-melatonin fed fawns but declined from 21 to 3.4 g/d over the length of the trial (P = .0001) in deer receiving melatonin. Melatonin fed fawns maintained (P < .05) elevated melatonin (average 92 pg/ml higher) until day 159. Melatonin concentrations were similar for male and female fawns. Plasma concentrations of T3 were similar for control and melatonin (average 312 ng/rnl, d 12) fed fawns, and generally mirrored daylength, decreasing (196 ng/ml, d 83) and then increasing in parallel with daylength (203.3 ng/dI, d 180). Plasma T4 concentrations averaged 26.1 28.6, and 23.7 gg/dl at day-4, 83, and 180. IGF-I concentrations in controls began at 66.5 pg/ml, (d-4) decreased to 36.4 pg/ml (d 83), and then increased to 67.09 pg/ml (d 180) in parallel with daylength (r--.832). Photoperiod through melatonin regulated fat storage and retrieval, and melatonin treatment reduced rates of protein deposition in deer fawns. Photoperiod, through melatonin, was the driving force in the growth and development patterns in these growing fawns.

Moritz, Jonathan Theodore

1995-01-01T23:59:59.000Z

445

Heterocyclic small molecule peptidomimetics  

E-Print Network (OSTI)

Polymer-supported synthesis of a close analog (i.e. A) of an early lead, a 14- membered ring peptidomimetic D3, was described. The monovalent molecule was attached to different length linkers, and they were then paired sequentially on a triazine scaffold via our previously published methodology to give a small library of bivalent compounds 1 representing all combinations of linkers of the different lengths in a fast and efficient combinatorial manner. Cellular assays identified 1-ss as a TrkA receptor antagonist towards NGF and it was shown to bind TrkA with ~200 nM affinity and retains high selectivity towards TrkA in binding assays. A set of monovalent diketopiperazine (DKP) mimics 4-7 was synthesized efficiently from corresponding dipeptides via intramolecular SN2 cyclization reactions in solution. These DKP compounds contain two amino acid side-chain functionalities to mimic the sequences that occur at hot-spots in loop regions. The monovalent mimics were assembled into a library of biotin-labeled bivalent molecules 9 via the combinatorial strategy described above with some modification. In primary screening, compound 9gg showed preferential binding to TrkC receptors in FACScan assay and blocked the trophic activity of NT-3 in TrkC cells at 10 uM in cell survival assay. The preparation of monovalent 1,3,4-oxadizole-based mimics 12 was achieved from corresponding amino acid building blocks on gram scale in a highly efficient solution phase parallel synthesis manner in good yields. These heterocyclic compounds feature various natural amino acid side-chain functionalities including those occuring most frequently at hot-spots such as those of Tyr, Lys, Glu and Ser. Attempts to assemble them into bivalent molecules were done by coupling the monovalent mimics to the triazine scaffold sequentially in solution and simply manipulating the solvent systems. For some reasons, some reactions did not proceed cleanly. Studies have been carried out and the problems were partially solved. The biological activities of these oxadiazoles are under investigation. So far, six compounds have shown activities in four different bioassays. Two different peptidomimetic types that resemble protein A and protein G binding regions were generated and tested as binding factors in affinity columns for purification of IgG. They are cyclic hexapeptides 19, which were prepared via Fmoc- SPPS and solution phase intramoleculer macrocyclization, and heterocycle-based small molecules 22 and 23 featuring a variety of aromatic functionalities generated via solution phase parallel synthesis. Four compounds showed some affinity towards a Fab fragment of IgG in SAR screening, and they were attached to a dendrimer core on a solid support to give four multivalent mimetics 25.

Liu, Jing

2008-12-01T23:59:59.000Z

446

Improved Vacuum Frying Process for High Quality Sweet Potato Chips  

E-Print Network (OSTI)

Vacuum frying is a promising method for preserving the desired color, texture, and flavor of products with high sugar content. Since most vegetables and fruits degrade when processed with traditional frying, vacuum frying is an excellent alternative to high temperature processing. However, in vacuum frying the product should be pre-treated before frying to obtain a better texture. The kinetics of oil absorption and oil distribution in sweet potato chips (total, internal, and surface oil content) was studied so that effectiveness of the de-oiling system could be established. An analysis of product quality attributes (PQA) such as moisture content, oil content, microstructure, diameter shrinkage, and thickness expansion, as well as, color, texture, bulk density, true density, and porosity of chips fried at different temperatures (120, 130, and 140C) was performed to evaluate the effect of process temperature on the product. The final oil content of the sweet potato chips was 0.1780.007, 0.1780.011, and 0.1720.002 g/g solid for frying temperatures of 120, 130, and 140C, respectively. These values were lower (~60% less) than those found in traditionally fried sweet potato chip, which indicates that the de-oiling mechanism is crucial in vacuum frying processing. It was found that the rate of change in PQAs is greatly affected by temperature; however, the final values of bulk density, true density, porosity, diameter shrinkage, and thickness expansion were not affected by temperature. The texture of the samples was affected by temperature, with the chips fried at 140 degrees C being crispier. In terms of color, the L* and color b* values decreased as temperature increased. While color a* was not affected by temperature. In this study, a two-stage frying process was also evaluated to improve the flavor and texture of sweet potato chips. First, a basket filled with the sweet potato slices was submerged into the oil under atmospheric conditions. As soon as the potato slices were partially cooked (1 min), the pressure was lowered to 1.33 kPa (vacuum frying stage) and the product fried for 2 more min. The products were fried at 130 degrees C for different interval of times. Starch gelatinization, texture, moisture content, and oil content were evaluated at each time interval. Sensory analysis was accomplished by using a consumer panel with 50 members. The samples were compared with the on-stage frying and atmospheric frying processes. The two-stage fried chips had better appearance and texture compared to the ones that were only fried under vacuum or atmospheric conditions. The samples were lighter and more yellow than the chips fried under the single-stage process. In vacuum frying, the temperature of the chips does not reach the gelatinization temperature until most of the water is evaporated. Therefore, there is not sufficient moisture content in the product for gelatinization to occur completely. As a result, the product has a glassy texture. In the two stage frying, the atmospheric frying prior to vacuum frying helps the starch to gelatinize thus producing a better product in terms of texture, oil content, and flavor. The atmospheric fried samples were darker in color and had a scorch taste. The degree of starch gelatinization was 21% higher for the two-stage fried samples than the single-stage fried ones. The application of the dual stage enhances the quality of sweet potato chips, improves consumer satisfaction, and reduces the need for space, cost, and any other needs of blanching pre-treatment to the sweet potato manufacturers.

Ravli, Yagmur 1985-

2012-12-01T23:59:59.000Z

447

Search for Higgs boson production in proton-antiproton collisions at s**(1/2) = 1.96 TeV  

SciTech Connect

We performed a search for Standard Model Higgs boson production in association with W boson (p{bar p} {yields} W{sup {+-}}H {yields} {ell}{nu}b{bar b}) in p{bar p} collisions at {radical}s = 1.96 TeV. The search uses the data collected between February 2002 and February 2006 at Collider Detector at Fermilab (CDF), which corresponds to an integrated luminosity of about 1 fb{sup -1}. The experimental final state of WH {yields} {ell}{nu}b{bar b} process is lepton (e{sup {+-}}/{mu}{sup {+-}}), missing transverse energy and two jets. The largest background in lepton+jets events is W+light flavor process, therefore the identification of jets as b-jets reduces this kind of background significantly. We used displaced SECondary VerTeX b-tagging (SECVTX) technique, which utilizes the signature that b-jets have secondary vertex displaced away from primary vertex because of the long life time of B-mesons. However, there is still much contamination in SECVTX b-tagged jets. Finite resolution of secondary vertex tracking measurements results in false tags, and c-jets are also identified as b-jets due to the long life time of D-mesons frequently. For the purpose of increasing the purity of the SECVTX b-tagged jets, we applied Neural Network to SECVTX tagged jets for the first time by using secondary vertex variables and some variables independent of it. Neural Network filter rejects 65% of light flavor jets and 50% of c-jets from the SECVTX tagged jets. We improved the sensitivity of the Higgs boson signal search by 10% with Neural Network b-tagging technique. Events with one high p{sub T} electron or muon, large missing transverse energy and either single SECVTX b-tagged jet which passes the Neural Network filter or at least two SECVTX b-tagged jets are selected. The number of selected events and dijet mass distributions are consistent with the Standard Model background expectations. Therefore we set an upper limit on {sigma}(p{bar p} {yields} WH) {center_dot} Br(H {yields} b{bar b}) as 3.9 to 1.3 for Higgs boson mass from 110 to 150 GeV/c{sup 2} at 95% confidence level (C.L.). The upper limit obtained from WH {yields} {ell}{nu}b{bar b} process with 1 fb{sup -1} is far away from the Standard Model Higgs boson production expectation by a factor of 20 to 100 as a function of Higgs boson mass. To obtain stronger constraint on the Higgs boson production, we combined the upper limits obtained in processes of ZH {yields} {nu}{bar {nu}}b{bar b}, ZH {yields} {ell}{bar {ell}}b{bar b} and gg {yields} H {yields} W{sup +}W{sup -} {yields} {ell}{bar {ell}}{nu}{bar {nu}} at CDF. The combination of different channels gives a constraint on the ratio of 95% confidence level upper limit divided by the Standard Model prediction (({sigma} {center_dot} Br){sub 95}/({sigma} {center_dot} Br){sub SM}), which results in the ratio as 10 to 40 for Higgs boson mass between 110 and 200 GeV/c{sup 2}. Finally, the combination of Higgs boson searches between CDF and D0 is also performed. The resulting constraint on ({sigma} {center_dot} Br){sub 95}/({sigma} {center_dot} Br){sub SM} is about 4 to 10 for Higgs boson mass between 110 and 200 GeV/c{sup 2}.

Kusakabe, Yoshiaki; /Waseda U.

2006-12-01T23:59:59.000Z

448

Recent Developments in SHERPA  

Science Conference Proceedings (OSTI)

Some recent QCD-related developments in the SHERPA event generator are presented. In the past decades, event generators such as PYTHIA [1, 2] and HERWIG [3, 4] have been central for nearly all physics analyses at particle physics experiments at the high-energy frontier. This will also hold true at the LHC, where a large number of interesting signals for new particles or new phenomena (the Higgs boson or any other manifestation of the mechanism behind electro-weak symmetry breaking, supersymmetry, extra dimensions etc.) is hampered by a plethora of severe, sometimes overwhelming backgrounds. Nearly all of them are largely influenced by QCD. Therefore it seems fair to say that the success of the LHC in finding new physics may very well depend on a deep and detailed understanding of old physics, like QCD. Examples for this include, among others, the central-jet veto for the vector boson fusion channel for Higgs production or topologies, where gauge bosons emerge in association with many jets, a background for many search channels. In a reflection on increased needs by the experimental community, aiming at higher precision, incorporation of new physics models and so on, the work horses of old have undergone serious renovation efforts, resulting in new, improved versions of the respective codes, namely PYTHIA8 [5] and HERWIG++ [6]. In addition a completely new code, SHERPA [7], has been constructed and is in the process of maturing. The status of this code is the topic of this contribution. SHERPA's hallmark property is the inclusion of higher-order tree-level QCD contributions, leading to an improved modelling of jet production. They are introduced through a full-fledged matrix element generator, AMEGIC++ [8], which is capable of generating matrix elements and corresponding phase space mappings for processes with multi-particle final states in various models, including the Standard Model, anomalous gauge triple and quadruple couplings according to [9, 10], the Minimal Supersymmetric Standard Model with Feynman rules from [11], the ADD-model of extra dimensions [12, 13], and a model with an extra U(1) singlet coupling to the Higgs boson only [14]. The code has been thoroughly tested and validated [15]. This code, however, is limited, especially in the treatment of many ({ge} 6) external QCD particles. Therefore, in the near future, SHERPA will incorporate another, new matrix element generator, COMIX, which is based on Berends-Giele recursion relations [16] and color-dressing [17] rather than color-ordering. In Tabs. 1 and 2 some example cross sections for gg {yields} ng at fixed energies and pp {yields} b{bar b} + n jets obtained with this program are exhibited and compared to those from other programs. In addition, concerning the calculation of higher-order matrix elements and cross sections, there have been first steps towards an automation of such calculations at truly next-to leading order accuracy. They manifest themselves in the implementation of a procedure [19] to fully automatically construct and evaluate Catani-Seymour dipole subtraction terms [20] for the real part of such NLO calculations. The results from the matrix element calculations are merged with the subsequent parton shower through the formalism of [21, 22]. The results of its implementation in SHERPA [23] has recently been compared with other algorithms [24]. Although there remains some dispute about the theoretical equivalence of the different approaches, the overall results show satisfying agreement with each other, such that they can be used with confidence for data analysis.

Archibald, Jennifer; /Durham U., IPPP; Gleisberg, Tanju; /SLAC; Hoeche, Stefan; /Durham U., IPPP; Krauss, Frank; /Durham U., IPPP; Schonherr, Marek; /Dresden, Tech. U.; Schumann, Steffen; /Edinburgh U.; Siegert, Frank; /Durham U., IPPP; Winter, Jan; /Fermilab

2011-11-15T23:59:59.000Z

449

The SM and NLO Multileg Working Group: Summary Report  

SciTech Connect

After years of waiting, and after six Les Houches workshops, the era of LHC running is finally upon us, albeit at a lower initial center-of-mass energy than originally planned. Thus, there has been a great sense of anticipation from both the experimental and theoretical communities. The last two years, in particular, have seen great productivity in the area of multi-parton calculations at leading order (LO), next-to-leading order (NLO) and next-to-next-to-leading order (NNLO), and this productivity is reflected in the proceedings of the NLM group. Both religions, Feynmanians and Unitarians, as well as agnostic experimenters, were well-represented in both the discussions at Les Houches, and in the contributions to the write-up. Next-to-leading order (NLO) is the first order at which the normalization, and in some cases the shape, of perturbative cross sections can be considered reliable. This can be especially true when probing extreme kinematic regions, as for example with boosted Higgs searches considered in several of the contributions to this writeup. A full understanding for both standard model and beyond the standard model physics at the LHC requires the development of fast, reliable programs for the calculation of multi-parton final states at NLO. There have been many advances in the development of NLO techniques, standardization and automation for such processes and this is reflected in the contributions to the first section of this writeup. Many calculations have previously been performed with the aid of semi-numerical techniques. Such techniques, although retaining the desired accuracy, lead to codes which are slow to run. Advances in the calculation of compact analytic expressions for Higgs + 2 jets have resulted in the development of much faster codes, which extend the phenomenology that can be conducted, as well as making the code available to the public for the first time. A prioritized list of NLO cross sections was assembled at Les Houches in 2005 and added to in 2007. This list includes cross sections which are experimentally important, and which are theoretically feasible (if difficult) to calculate. Basically all 2-3 cross sections of interest have been calculated, with the frontier now extending to 2 {yields} 4 calculations. Often these calculations exist only as private codes. Since 2007, two additional calculations have been completed: t{bar t}b{bar b} and W+3 jets, reflecting the advance of the NLO technology to 2 {yields} 4 processes. In addition, the cross section for b{bar b}b{bar b} has been calculated for the q{bar q} initial state with the gg initial state calculation in progress. Final states of such complexity usually lead to multi-scale problems, and the correct choice of scales to use can be problematic not only at LO, but also at NLO. The size of the higher order corrections and of the residual scale dependence at NLOcan depend strongly on whether the considered cross section is inclusive, or whether a jet veto cut has been applied. Depending on the process, dramatically different behavior can be observed upon the application of a jet veto. There is a trade-off between suppressing the NLO cross section and increasing the perturbative uncertainty, with application of a jet veto sometimes destroying the cancellation between infra-red logs of real and virtual origin, and sometimes just suppressing large (and very scale-sensitive) tree-level contributions. So far, there is no general rule predicting the type of behavior to be expected, but this is an important matter for further investigation. From the experimental side, an addition to the above wish-list that will be crucial is the determination of the accuracy to which each of the calculations needs to be known. This is clearly related to the experimental accuracy at which the cross sections can be measured at the LHC, and can determine, for example, for what processes it may be necessary to calculate electo-weak corrections, in addition to the higher order QCD corrections. On the theoretical side, it would also be interesting to categorize

Andersen, J.R.; Archibald, J.; Badger, S.; Ball, R.D.; Bevilacqua, G.; Bierenbaum, I.; Binoth, T.; Boudjema, F.; Boughezal, R.; Bredenstein, A.; Britto, R.; Campanelli, M.; Campbell, J.; Carminati, L.; Chachamis, G.; Ciulli, V.; Cullen, G.; Czakon, M.; Del Debbio, L.; Denner, A.; Dissertori, G.; /Edinburgh U. /Zurich, ETH /Michigan State U. /CAFPE, Granada /CERN /Durham U., IPPP /DESY, Zeuthen /Democritos Nucl. Res. Ctr. /Valencia U., IFIC /Annecy, LAPTH /Zurich U. /KEK, Tsukuba /Saclay, SPhT /University Coll. London /Fermilab /INFN, Milan /Milan U. /PSI, Villigen /Florence U. /INFN, Florence /RWTH Aachen U.

2012-04-10T23:59:59.000Z

450

Bounding the Role of Black Carbon in the Climate System: A Scientific Assessment  

SciTech Connect

Black carbon aerosol plays a unique and important role in Earths climate system. Black carbon is a type of carbonaceous material with a unique combination of physical properties. Predominant sources are combustion related; namely, fossil fuels for transportation, solid fuels for industrial and residential uses, and open burning of biomass. Total global emissions of black carbon using bottom-up inventory methods are 7500 Gg yr-1 in the year 2000 with an uncertainty range of 2000 to 29000. This assessment provides an evaluation of black-carbon climate forcing that is comprehensive in its inclusion of all known and relevant processes and that is quantitative in providing best estimates and uncertainties of the main forcing terms: direct solar absorption, influence on liquid, mixed-phase, and ice clouds, and deposition on snow and ice. These effects are calculated with models, but when possible, they are evaluated with both microphysical measurements and field observations. Global atmospheric absorption attributable to black carbon is too low in many models, and should be increased by about about 60%. After this scaling, the best estimate for the industrial-era (1750 to 2005) direct radiative forcing of black carbon is +0.43 W m-2 with 90% uncertainty bounds of (+0.17, +0.68) W m-2. Total direct forcing by all black carbon sources in the present day is estimated as +0.49 (+0.20, +0.76) W m-2. Direct radiative forcing alone does not capture important rapid adjustment mechanisms. A framework is described and used for quantifying climate forcings and their rapid responses and feedbacks. The best estimate of industrial-era (1750 to 2005) climate forcing of black carbon through all forcing mechanisms is +0.77 W m-2 with 90% uncertainty bounds of +-0.06 to +1.53 W m-2. Thus, there is a 96% probability that black carbon emissions, independent of co-emitted species, have a positive forcing and warm the climate. With a value of +0.77 W m-2, black carbon is likely the second most important individual climate-forcing agent in the industrial era, following carbon dioxide. Sources that emit black carbon also emit other short- lived species that may either cool or warm climate. Climate forcings from co-emitted species are estimated and used in the framework described herein. When the principal effects of co- emissions, including cooling agents such as sulfur dioxide, are included in net forcing, energy-related sources (fossil-fuel and biofuel) have a net climate forcing of +0.004 (-0.62 to +0.57) W m-2 during the first year after emission. For a few of these sources, such as diesel engines and possibly residential biofuels, warming is strong enough that eliminating all emissions from these sources would reduce net climate forcing (i.e., produce cooling). When open burning emissions, which emit high levels of organic matter, are included in the total, the best estimate of net industrial-era climate forcing by all black- carbon-rich sources becomes slightly negative (-0.08 W m-2 with 90% uncertainty bounds of -1.23 to +0.81 W m-2). The uncertainties in net climate forcing from black-carbon-rich sources are substantial, largely due to lack of knowledge about cloud interactions with both black carbon and co-emitted organic carbon. In prioritizing potential black-carbon mitigation actions, non-science factors, such as technical feasibility, costs, policy design, and implementation feasibility play important roles. The major sources of black carbon are presently in different stages with regard to the feasibility for near-term mitigation. This assessment, by evaluating the large number and complexity of the associated physical and radiative processes in black-carbon climate forcing, sets a baseline from which to improve future climate forcing estimates.

Bond, Tami C.; Doherty, Sarah J.; Fahey, D. W.; Forster, Piers; Berntsen, T.; DeAngelo, B. J.; Flanner, M. G.; Ghan, Steven J.; Karcher, B.; Koch, Dorothy; Kinne, Stefan; Kondo, Yutaka; Quinn, P. K.; Sarofim, Marcus; Schultz, Martin; Schulz, M.; Venkataraman, C.; Zhang, Hua; Zhang, Shiqiu; Bellouin, N.; Guttikunda, S. K.; Hopke, P. K.; Jacobson, M. Z.; Kaiser, J. W.; Klimont, Z.; Lohmann, U.; Schwarz, Joshua P.; Shindell, Drew; Storelvmo, Trude; Warren, Stephen G.; Zender, C. S.

2013-06-06T23:59:59.000Z