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1

Picasolar | Department of Energy  

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

Bearing Analytics Purdue University 355 likes Bearing Analytics is a leading-edge equipment monitoring company aimed at pioneering a new era in industrial bearing condition...

2

Picasolar | Department of Energy  

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

| Alphabetical | Rating (High to Low) | Rating (Low to High) Pyro-E University of California-Berkeley 190 likes Pyro-E, LLC is developing a solid-state device for waste heat...

3

Picasolar | Department of Energy  

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

A&T State University 1322 likes Bioadhesive Alliance Inc. is a developer and manufacturer of "PiGrid", bio-based adhesive that is green, low cost, and durable and can be...

4

Page 1 of 2 UNIVERSITY OF SUSSEX WHOLLY OWNED COMPANIES  

E-Print Network [OSTI]

Page 1 of 2 UNIVERSITY OF SUSSEX ­ WHOLLY OWNED COMPANIES FREEDOM OF INFORMATION PUBLICATION SCHEME companies from 1 January 2009. The Guide is intended as a summary of where the classes of information for Wholly Owned Companies) may be accessed. 2. The Guide does not list individual publications covered

Sussex, University of

5

Picasolar | Department of Energy  

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

for the next generation of lithium-ion batteries. SiNode anodes offer higher battery capacity and faster charging rates, all while being produced via a low cost solution...

6

Position: Polymer Chemist Company: ExxonMobil Research and Engineering Company, a wholly owned subsidiary of Exxon Mobil  

E-Print Network [OSTI]

candidate will apply his or her knowledge to improve existing olefin-based products and develop new ones productive collaborations internally and with outside research organizations, and grow new science areas. JobPosition: Polymer Chemist Company: ExxonMobil Research and Engineering Company, a wholly owned

Alpay, S. Pamir

7

Prepared by a wholly ow  

E-Print Network [OSTI]

plants and Strategic Power Systems' ORAPWind® (Operational Reliability Analysis Program for Wind) data September 2013 Continuous Reliability Enhancement for Wind (CREW) Database: Wind Plant Reliability Benchmark Plant Reliability Benchmark, to publically report on CREW findings for the wind industry. The CREW

8

TM Pacific Blue Cross, the registered trade-name of PBC Health Benefits Society, is an independent licensee of the Canadian Association of Blue Cross Plans. BC Life is the registered trade-name of British Columbia Life & Casualty Company, a wholly-owned s  

E-Print Network [OSTI]

TM® Pacific Blue Cross, the registered trade-name of PBC Health Benefits Society, is an independent licensee of the Canadian Association of Blue Cross Plans. BC Life is the registered trade-name of British Columbia Life & Casualty Company, a wholly-owned subsidiary of Pacific Blue Cross. CARESnet

9

Neither Wholly Public, Nor Wholly Private: Interstitial Spaces in Works by Nineteenth-Century American Women Writers  

E-Print Network [OSTI]

lines of action for the two sexes, and to make them keep pace one with the other, but in two pathways which are always different. American women never manage the outward concerns of the family, or conduct a business, or take a part in political life... who manage both a family and a career (823). Wells argues, however, that women who eschew marriage and children altogether are ?purely selfish? (823). Wells then only accounts for women who want both a family and a career. She fails...

Green-Barteet, Miranda A.

2010-10-12T23:59:59.000Z

10

Tissue-like phantoms  

DOE Patents [OSTI]

The invention is based, in part, on the discovery that by combining certain components one can generate a tissue-like phantom that mimics any desired tissue, is simple and inexpensive to prepare, and is stable over many weeks or months. In addition, new multi-modal imaging objects (e.g., beads) can be inserted into the phantoms to mimic tissue pathologies, such as cancer, or merely to serve as calibration standards. These objects can be imaged using one, two, or more (e.g., four) different imaging modalities (e.g., x-ray computed tomography (CT), positron emission tomography (PET), single photon emission computed tomography (SPECT), and near-infrared (NIR) fluorescence) simultaneously.

Frangioni, John V. (Wayland, MA); De Grand, Alec M. (Boston, MA)

2007-10-30T23:59:59.000Z

11

Paying for Likes? Understanding Facebook Like Fraud Using Honeypots  

E-Print Network [OSTI]

Facebook pages offer an easy way to reach out to a very large audience as they can easily be promoted using Facebook's advertising platform. Recently, the number of likes of a Facebook page has become a measure of its popularity and profitability, and an underground market of services boosting page likes, aka like farms, has emerged. Some reports have suggested that like farms use a network of profiles that also like other pages to elude fraud protection algorithms, however, to the best of our knowledge, there has been no systematic analysis of Facebook pages' promotion methods. This paper presents a comparative measurement study of page likes garnered via Facebook ads and by a few like farms. We deploy a set of honeypot pages, promote them using both methods, and analyze garnered likes based on likers' demographic, temporal, and social characteristics. We highlight a few interesting findings, including that some farms seem to be operated by bots and do not really try to hide the nature of their operations, w...

De Cristofaro, Emiliano; Jourjon, Guillaume; Kaafar, Mohamed Ali; Shafiq, M Zubair

2014-01-01T23:59:59.000Z

12

Magmatic "Quantum-Like" Systems  

E-Print Network [OSTI]

Quantum computation has suggested, among others, the consideration of "non-quantum" systems which in certain respects may behave "quantum-like". Here, what algebraically appears to be the most general possible known setup, namely, of {\\it magmas} is used in order to construct "quantum-like" systems. The resulting magmatic composition of systems has as a well known particular case the tensor products.

Elemer E Rosinger

2008-12-16T23:59:59.000Z

13

Crystal-Like geometric modeling  

E-Print Network [OSTI]

faces, symmetry, and fractal geometry. The techniques have also been implemented in software, as a proof of concept. They are used in an interactive geometric modeling system, in which users can use these techniques to create crystal-like shapes...

Landreneau, Eric Benjamin

2006-08-16T23:59:59.000Z

14

On Infinite EPR-like Correlations  

E-Print Network [OSTI]

The paper investigates, in the framework of branching space-times, whether an infinite EPR-like correlation which does not involve finite EPR-like correlations is possible.

Leszek Wro?ski; Tomasz Placek

2007-05-29T23:59:59.000Z

15

Transition between Tamm-like and Shockley-like surface states in optically induced photonic superlattices  

SciTech Connect (OSTI)

We study the formation of Shockley-like surface states and their transition into Tamm-like surface states in an optically induced semi-infinite photonic superlattice. While perfect Shockley-like states appear only when the induced superlattice with alternating strong and weak bonds is terminated properly with an unperturbed surface, deformed Shockley-like surface states often appear in the so-called inverted band gap when the surface perturbation is nonzero. Furthermore, transitions between linear Tamm-like, Shockley-like, and nonlinear Tamm-like surface states are also observed by fine tuning the surface perturbation. Using coupled-mode theory, we confirm the existence of these linear and nonlinear surface states in a finite array of N identical single-mode waveguides coupled with alternating strong and weak bonds.

Malkova, Natalia [Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132 (United States); National Institute of Standards and Technology and Joint Quantum Institute, University of Maryland, Gaithersburg, Maryland 20899 (United States); Hromada, Ivan; Wang Xiaosheng [Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132 (United States); Bryant, Garnett [National Institute of Standards and Technology and Joint Quantum Institute, University of Maryland, Gaithersburg, Maryland 20899 (United States); Chen Zhigang [Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132 (United States); Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics School, Nankai University, Tianjin 300457 (China)

2009-10-15T23:59:59.000Z

16

Brain as quantum-like computer  

E-Print Network [OSTI]

We present a contextualist statistical realistic model for quantum-like representations in physics, cognitive science and psychology. We apply this model to describe cognitive experiments to check quantum-like structures of mental processes. The crucial role is played by interference of probabilities for mental observables. Recently one of such experiments based on recognition of images was performed. This experiment confirmed our prediction on quantum-like behaviour of mind. In our approach ``quantumness of mind'' has no direct relation to the fact that the brain (as any physical body) is composed of quantum particles. We invented a new terminology ``quantum-like (QL) mind.'' Cognitive QL-behaviour is characterized by nonzero coefficient of interference $\\lambda.$ This coefficient can be found on the basis of statistical data. There is predicted not only $\\cos \\theta$-interference of probabilities, but also hyperbolic $\\cosh \\theta$-interference. This interference was never observed for physical systems, but we could not exclude this possibility for cognitive systems. We propose a model of brain functioning as QL-computer (there is discussed difference between quantum and QL computers).

Andrei Khrennikov

2005-03-24T23:59:59.000Z

17

The Aurora: What does it look like?  

E-Print Network [OSTI]

The Aurora: What does it look like? An introduction for elementary school-aged children #12 Eklund #12;Northern Hemisphere observers call them the Northern Lights or Aurora Borealis. Southern Hemisphere observers call them the Southern Lights or Aurora Australis. Courtesy of NASA #12;Courtesy of Tom

Mojzsis, Stephen J.

18

The Fourier-Like and Hartley-Like Wavelet Analysis Based on Hilbert Transforms  

E-Print Network [OSTI]

In continuous-time wavelet analysis, most wavelet present some kind of symmetry. Based on the Fourier and Hartley transform kernels, a new wavelet multiresolution analysis is proposed. This approach is based on a pair of orthogonal wavelet functions and is named as the Fourier-Like and Hartley-Like wavelet analysis. A Hilbert transform analysis on the wavelet theory is also included.

Soares, L R; Cintra, R J

2015-01-01T23:59:59.000Z

19

Entanglement Teleportation Through Cat-like States  

E-Print Network [OSTI]

We first consider teleportation of entangled states shared between Claire and Alice to Bob1 and Bob2 when Alice and the two Bobs share a single copy of a GHZ-class state and where {\\it all} the four parties are at distant locations. We then generalize this situation to the case of teleportation of entangled states shared between Claire1, Claire2, ....., Claire(N-1) and Alice to Bob1, Bob2, ....., BobN when Alice and the N Bobs share a single copy of a Cat-like state and where again {\\it all} the 2N parties are at distant locations.

Sibasish Ghosh; Guruprasad Kar; Anirban Roy; Debasis Sarkar; Ujjwal Sen

2000-12-20T23:59:59.000Z

20

Supersymmetry and Vector-like Extra Generation  

E-Print Network [OSTI]

Within the framework of supersymmetry, the particle content is extended in a way that each Higgs doublet is in a full generation. Namely in addition to ordinary three generations, there is an extra vector-like generation, and it is the extra slepton SU(2)_L doublets that are taken to be the two Higgs doublets. R-parity violating interactions contain ordinary Yukawa interactions. Breaking of supersymmetry and gauge symmetry are analyzed. Fermion and boson spectra are calculated. Phenomenological constraints and relevant new physics at Large Hadron Collider are discussed.

Chun Liu

2009-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" 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

Watermelon-like iron nanoparticles: Cr doping effect on magnetism...  

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

Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal. Watermelon-like iron nanoparticles: Cr doping effect on magnetism and...

22

Glass-like thermal conductivity in high efficiency thermoelectric...  

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

Glass-like thermal conductivity in high efficiency thermoelectric materials Glass-like thermal conductivity in high efficiency thermoelectric materials Discusses strategies to...

23

The lightcone of Gdel-like spacetimes  

E-Print Network [OSTI]

A study of the lightcone of the G\\"odel universe is extended to the so-called G\\"odel-like spacetimes. This family of highly symmetric 4-D Lorentzian spaces is defined by metrics of the form $ds^2=-(dt+H(x)dy)^2+D^2(x)dy^2+dx^2+dz^2$, together with the requirement of spacetime homogeneity, and includes the G\\"odel metric. The quasi-periodic refocussing of cone generators with startling lens properties, discovered by Ozsv\\'{a}th and Sch\\"ucking for the lightcone of a plane gravitational wave and also found in the G\\"odel universe, is a feature of the whole G\\"odel family. We discuss geometrical properties of caustics and show that (a) the focal surfaces are two-dimensional null surfaces generated by non-geodesic null curves and (b) intrinsic differential invariants of the cone attain finite values at caustic subsets.

G. Dautcourt

2010-09-27T23:59:59.000Z

24

Apparatus for insulating windows and the like  

DOE Patents [OSTI]

Apparatus for insulating window openings through walls and the like includes a thermal shutter, a rail for mounting the shutter adjacent to the window opening and a coupling for connecting the shutter to the rail. The thermal shutter includes an insulated panel adhered to frame members which surround the periphery of the panel. The frame members include a hard portion for providing the frame and a soft portion for providing a seal with that portion of the wall adjacent to the periphery of the opening. The coupling means is preferably integral with the attachment rail. According to a preferred embodiment, the coupling means includes a continuous hinge of reduced thickness. The thermal shutter can be permanently attached, hinged, bi-folded, or sliding with respect to the window and wall. A distribution method is to market the apparatus in "kit" form.

Mitchell, Robert A. (R.D. #1, Box 462-A, Voorheesville, NY 12186)

1984-01-01T23:59:59.000Z

25

Iterated maps for clarinet-like systems  

E-Print Network [OSTI]

The dynamical equations of clarinet-like systems are known to be reducible to a non-linear iterated map within reasonable approximations. This leads to time oscillations that are represented by square signals, analogous to the Raman regime for string instruments. In this article, we study in more detail the properties of the corresponding non-linear iterations, with emphasis on the geometrical constructions that can be used to classify the various solutions (for instance with or without reed beating) as well as on the periodicity windows that occur within the chaotic region. In particular, we find a regime where period tripling occurs and examine the conditions for intermittency. We also show that, while the direct observation of the iteration function does not reveal much on the oscillation regime of the instrument, the graph of the high order iterates directly gives visible information on the oscillation regime (characterization of the number of period doubligs, chaotic behaviour, etc.).

Pierre-Andr Taillard; Jean Kergomard; Franck Lalo

2010-05-31T23:59:59.000Z

26

Differential Cryptanalysis of DES-like Cryptosystems  

E-Print Network [OSTI]

The Data Encryption Standard (DES) is the best known and most widely used cryptosystem for civilian applications. It was developed at IBM and adopted by the National Buraeu of Standards in the mid 70's, and has successfully withstood all the attacks published so far in the open literature. In this paper we develop a new type of cryptanalytic attack which can break the reduced variant of DES with eight rounds in a few minutes on a PC and can break any reduced variant of DES (with up to 15 rounds) in less than 2 56 operations. The new attack can be applied to a variety of DES-like substitution/permutation cryptosystems, and demonstrates the crucial role of the (unpublished) design rules.

Eli Biham; Adi Shamir

1991-01-01T23:59:59.000Z

27

Trajectory generation for car-like robots  

SciTech Connect (OSTI)

Autonomous robots or remotely operated vehicles have raised high hopes in the military and industrial communities because of the potential safety improvement and gain of productivity they may provide. Waste management on nuclear sites, pallet manipulation in factories, interventions on battle-fields, etc., are actively studied. A lot of these applications require powerful four-wheel vehicles, the kinematics of which is similar to that of a car. Such vehicles have three degrees of freedom: the (x,y) positions in a plane and the orientation of the vehicle. Path planning is often understood as only changing the position of the vehicle, whereas the tasks performed by this kind of robot requires a perfect orientation of the vehicle: forklifting a pallet or docking at a loading or unloading station requires accuracy in the orientation of the vehicle. It is this requirement and the kinematic constraints of the motion mode which have led to the path-planning algorithm presented in this paper. The velocity of the robot belongs to a two-dimensional vectorial space. However, we assume that there is no slipping of the wheels. Therefore, at a given position, the direction of the velocity of the rear axle, is colinear with that of the vehicle. The equation conveying this constraint is not integrable and affects the velocity but not the space of the configurations of the robot: it is a non-holonomic constraint. If the steering angle of the front wheels is constant, the vehicle moves along a circle. Since the steering angle of the car-like robots is limited, the radius of the circle is always greater than a certain value which is the minimum radius of curvature of any achievable trajectory. 3 refs., 8 figs.

Vasseur, H.A.; Pin, F.G.

1990-01-01T23:59:59.000Z

28

Conversation/Culture Partner Program Would you like to help  

E-Print Network [OSTI]

Conversation/Culture Partner Program Would you like to help another student improve their English different cultures; *Help another student improve their conversation English; and *Assist another student

Thomas, Andrew

29

Chaotic physics in ferroelectrics hints at brain-like computing...  

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

Oak Ridge National Laboratory 865-574-7308 Chaotic physics in ferroelectrics hints at brain-like computing Unexpected behavior in ferroelectric materials explored by researchers...

30

Direct Numerical Simulations in Engine-like Geometries | Argonne...  

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

Direct Numerical Simulations in Engine-like Geometries Event Sponsor: Mathematics and Computing ScienceArgonne Leadership Computing Facility Seminar Start Date: Nov 14 2014 -...

31

Emissions trading and its likely effects on the airline industry.  

E-Print Network [OSTI]

??This study concerns the extension of emissions trading to the airline industry and was designed to clarify and substantiate likely effects of the Emissions Trading (more)

Recht-Hansen, Sonja

2010-01-01T23:59:59.000Z

32

The Search for Extrasolar Earth-like planets  

E-Print Network [OSTI]

The search for extrasolar Earth-like planets is underway. Over 100 extrasolar giant planets are known to orbit nearby sun-like stars, including several in multiple-planet systems. These planetary systems are stepping stones for the search for Earth-like planets; the technology development, observational strategies, and science results can all be applied to Earth-like planets. Stars much less massive than the sun the most common stars in our Galaxy are being monitored for the gravitational influence of Earth-like planets. Although Earth-like planets orbiting sun-like stars are much more difficult to detect, space missions are being built to detect them indirectly due to their effects on the parent star and to quantify fundamental factors such as terrestrial planet frequency, size distribution, and mass distribution. Extremely ambitious space programs are being developed to directly detect Earth-like planets orbiting sun-like stars, and must tackle the immense technological challenge of blocking out the light of the parent star, which is brighter than the planet by six to ten orders of magnitude. Direct detection of radiation from the planet is necessary for the definitive goal of the search for Earth-like planets: the study of atmospheric spectral signatures for signs of severe disequilibrium chemistry that could be indicative of biological activity. In addition to technological development, a growing flurry of scientific activity has begun to: understand terrestrial planet formation and terrestrial planet frequency; model terrestrial-like planet atmospheres and evolution; articulate the biological signatures of our own Earth; and even to study Earth as an extrasolar planet by observation and analysis of the spatially unresolved Earth.

S. Seager

2003-05-19T23:59:59.000Z

33

The Sun like we have never seen it before  

E-Print Network [OSTI]

CONTENTS The Sun like we have never seen it before Strong support for STFC Science from Government Fascination automatically please visit http://www.stfc.ac.uk/fascination #12;The Sun like we have never seen before For the first time in history a stunning view of the whole Sun is visible to the world. The unique

34

# Common Name Scientific Name Family Conifers -Trees with needle-like leaves; fruit a cone, or cone-like  

E-Print Network [OSTI]

# Common Name Scientific Name Family Conifers - Trees with needle-like leaves; fruit a cone; fruit a cone, or cone-like 7 Eastern Red Cedar Juniperus virginiana Cypress Cupressaceae 8 Northern Ulmaceae "Elm Shaped" Leaves - Fruiting Trees 35 Osage-orange Maclura pomifera Mulberry Moraceae 36 Common

Indiana University

35

About homotopy perturbation method for solving heat-like and wave-like equations with variable coefficients  

E-Print Network [OSTI]

We analyze a recent application of homotopy perturbation method to some heat-like and wave-like models and show that its main results are merely the Taylor expansions of exponential and hyperbolic functions. Besides, the authors require more boundary conditions than those already necessary for the solution of the problem by means of power series.

Francisco M. Fernandez

2008-11-17T23:59:59.000Z

36

Soft X-ray laser using pumping of 3P and 4P levels of He-like and H-like ions  

DOE Patents [OSTI]

X-ray laser method and apparatus for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4-50 cm.sup.-1.

Hagelstein, Peter L. (Livermore, CA)

1987-01-01T23:59:59.000Z

37

Soft x-ray laser using pumping of 3p and 4p levels of He-like and H-like ions  

DOE Patents [OSTI]

X-ray laser method and apparatus for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4 to 50 cm/sup -1/.

Hagelstein, P.L.

1985-07-05T23:59:59.000Z

38

Defects and impurities in graphene-like materials  

E-Print Network [OSTI]

Graphene-like materials could be used in the fabrication of electronic and optoelectronic devices, gas sensors, biosensors, and batteries for energy storage. Since it is almost impossible to work with defect-free or ...

Terrones, Mauricio

39

Gasoline-like fuel effects on advanced combustion regimes  

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

Gasoline-like fuel effects on advanced combustion regimes Project ID FT008 2011 U.S. DOE Hydrogen and Vehicle Technologies Program Annual Merit Review and Peer Evaluation May...

40

Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions  

E-Print Network [OSTI]

New X-ray observatories (Chandra and XMM-Newton) are providing a wealth of high-resolution X-ray spectra in which hydrogen- and helium-like ions are usually strong features. We present results from a new collisional-radiative plasma code, the Astrophysical Plasma Emission Code (APEC), which uses atomic data in the companion Astrophysical Plasma Emission Database (APED) to calculate spectral models for hot plasmas. APED contains the requisite atomic data such as collisional and radiative rates, recombination cross sections, dielectronic recombination rates, and satellite line wavelengths. We compare the APEC results to other plasma codes for hydrogen- and helium-like diagnostics, and test the sensitivity of our results to the number of levels included in the models. We find that dielectronic recombination with hydrogen-like ions into high (n=6-10) principal quantum numbers affects some helium-like line ratios from low-lying (n=2) transitions.

Randall K. Smith; Nancy S. Brickhouse; Duane A. Liedahl; John C. Raymond

2001-06-26T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" 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

Analysis of a New Variational Model to Restore Point-Like and Curve-Like Singularities in Imaging  

SciTech Connect (OSTI)

The paper is concerned with the analysis of a new variational model to restore point-like and curve-like singularities in biological images. To this aim we investigate the variational properties of a suitable energy which governs these pathologies. Finally in order to realize numerical experiments we minimize, in the discrete setting, a regularized version of this functional by fast descent gradient scheme.

Aubert, Gilles, E-mail: gaubert@unice.fr [Universite de Nice Sophia Antipolis, Laboratoire J.A. Dieudonne (France)] [Universite de Nice Sophia Antipolis, Laboratoire J.A. Dieudonne (France); Blanc-Feraud, Laure, E-mail: Laure.Blanc-Feraud@inria.fr; Graziani, Daniele, E-mail: Daniele.Graziani@inria.fr [Inria, Morpheme CNRS/INRIA/UNSA Sophia Antipolis (France)] [Inria, Morpheme CNRS/INRIA/UNSA Sophia Antipolis (France)

2013-02-15T23:59:59.000Z

42

Capacitively coupled RF diamond-like-carbon reactor  

DOE Patents [OSTI]

A process of coating a non-conductive fiber with diamond-like carbon, including passing a non-conductive fiber between a pair of parallel metal grids within a reaction chamber, introducing a hydrocarbon gas into the reaction chamber, forming a plasma within the reaction chamber for a sufficient period of time whereby diamond-like carbon is formed upon the non-conductive fiber, is provided together with a reactor chamber for deposition of diamond-like carbon upon a non-conductive fiber, including a vacuum chamber, a cathode assembly including a pair of electrically isolated opposingly parallel metal grids spaced apart at a distance of less than about 1 centimeter, an anode, a means of introducing a hydrocarbon gas into said vacuum chamber, and a means of generating a plasma within said vacuum chamber.

Devlin, David James (Los Alamos, NM); Coates, Don Mayo (Santa Fe, NM); Archuleta, Thomas Arthur (Espanola, NM); Barbero, Robert Steven (Santa Cruz, NM)

2000-01-01T23:59:59.000Z

43

Relativistic Hydrogen-Like Atom on a Noncommutative Phase Space  

E-Print Network [OSTI]

The energy levels of hydrogen-like atom on a noncommutative phase space were studied in the framework of relativistic quantum mechanics. The leading order corrections to energy levels 2S_{1/2}, 2P_{1/2} and 2P_{3/2} were obtained by using the \\theta and the \\bar\\theta modified Dirac Hamiltonian of hydrogen-like atom on a noncommutative phase space. The degeneracy of the energy levels 2P_{1/2} and 2P_{3/2} were removed completely by \\theta-correction. And the \\bar\\theta-correction shifts these energy levels.

Huseyin Masum; Sayipjamal Dulat; Mutallip Tohti

2012-02-12T23:59:59.000Z

44

Parton energy loss due to synchrotron-like gluon emission  

E-Print Network [OSTI]

We develop a quasiclassical theory of the synchrotron-like gluon radiation. Our calculations show that the parton energy loss due to the synchrotron gluon emission may be important in the jet quenching phenomenon if the plasma instabilities generate a sufficiently strong chromomagnetic field. Our gluon spectrum disagrees with that obtained by Shuryak and Zahed within the Schwinger's proper time method.

B. G. Zakharov

2008-09-03T23:59:59.000Z

45

RESEARCH ARTICLE Open Access Defined -synuclein prion-like molecular  

E-Print Network [OSTI]

form, -syn is enriched in -sheet structure, orderly organized into oligomers or amyloid fibrils [5 fibrils. Importantly, using -syn short amyloid fibrils as seed, endogenous -syn aggregates and accumulates pathogenic proteins that form amyloid-like inclusions within the cells. This is also the case of -syn which

Boyer, Edmond

46

IMMEDIATE COMMUNICATION Air pollution impairs cognition, provokes depressive-like  

E-Print Network [OSTI]

IMMEDIATE COMMUNICATION Air pollution impairs cognition, provokes depressive-like behaviors Institute, The Ohio State University, Columbus, OH, USA Particulate matter air pollution is a pervasive the effects of prolonged exposure to air pollution are well characterized with respect to pulmonary

Nelson, Randy J.

47

Spectral Fingerprints of Earth-like Planets Around FGK Stars  

E-Print Network [OSTI]

We present model atmospheres for an Earth-like planet orbiting the entire grid of main sequence FGK stars with effective temperatures ranging from T[subscript eff]=4250?K to T[subscript eff]=7000?K in 250?K intervals. We ...

Rugheimer, Sarah

48

books & arts Science fiction is like jazz --people think they  

E-Print Network [OSTI]

books & arts On our bookshelf Science fiction is like jazz -- people think they know what it is. Clarke, for example, was almost always about the reaction of people to advanced technology; that of H. G, is the curious novella Flatland: A Romance of Many Dimensions (1884). Flatland is set in a universe of two

Loss, Daniel

49

Virtual MISO Triggers in Wi-Fi-like Networks  

E-Print Network [OSTI]

Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano Edward W. Knightly 1 Thursday, April 11 difficult to achieve in mobile devices Thursday, April 11, 2013 #12;5 Virtual MISO (vMISO) TX RX vMISO, 2013 #12;1. System Model 1.1. Distributed System 1.2. Single-Antenna Nodes 6 vMISO

50

Photon-like flying qubit in the coupled cavity array  

E-Print Network [OSTI]

We propose a feasible scheme to realize a spin network via a coupled cavity array with the appropriate arrangement of external multi-driving lasers. It is demonstrated that the linear photon-like dispersion is achievable and this property opens up the possibility of realizing the pre-engineered spin network which is beneficial to quantum information processing.

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

2008-02-01T23:59:59.000Z

51

Structure and Dynamics of Earth-like Planets  

E-Print Network [OSTI]

Structure and Dynamics of Earth-like Planets Jeudi 20 et vendredi 21 novembre 2014. Amphithtre Antonangeli, UPMC, Paris 10h50 Coffee Break 11h20 Structure and Dynamics of the Interior of Mercury: What we 09h40 Moon Internal Structure from Apollo Seismic Data: a Corner Stone for Planetary Seismology

52

Creating Works-Like Prototypes of Mechanical Objects Bongjin Koo  

E-Print Network [OSTI]

of creating works-like prototypes. Designers are increasingly turning to 3D printing as a tool for fab Graphics]: Computational Ge- ometry and Object Modeling--Geometric algorithms. Keywords: fabrication, 3D printing, sketch-based modeling Links: DL PDF WEB VIDEO 1 Introduction Creating physical prototypes

Agrawala, Maneesh

53

Evidence for an anomalous like-sign dimuon charge asymmetry  

SciTech Connect (OSTI)

We measure the charge asymmetry A of like-sign dimuon events in 6.1 fb{sup -1} of p{bar p} collisions recorded with the DO detector at a center of mass energy sqrt s = 1.96 TeV at the Fermilab Tevatron Collider.

Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; /Oklahoma U.; Abolins, Maris A.; /Michigan State U.; Acharya, Bannanje Sripath; /Tata Inst.; Adams, Mark Raymond; /Illinois U., Chicago; Adams, Todd; /Florida State U.; Aguilo, Ernest; /York U., Canada; Alexeev, Guennadi D.; /Dubna, JINR; Alkhazov, Georgiy D.; /St. Petersburg, INP; Alton, Andrew K.; /Michigan U. /Augustana Coll., Sioux Falls; Alverson, George O.; /Northeastern U. /Rio de Janeiro, CBPF

2010-05-01T23:59:59.000Z

54

Spectroscopy of M-shell x-ray transitions in Zn-like through Co-like W  

SciTech Connect (OSTI)

The M-shell x-ray emission of highly charged tungsten ions has been investigated at the Livermore electron beam ion trap facility. Using the SuperEBIT electron beam ion trap and a NASA x-ray calorimeter array, transitions connecting the ground configurations in the 1500-3600 eV spectral range of zinc-like W{sup 44+} through cobalt-like W{sup 47+} have been measured. The measured spectra are compared with theoretical line positions and emissivities calculated using the FAC code.

Clementson, J; Beiersdorfer, P; Brown, G V; Gu, M F

2009-07-08T23:59:59.000Z

55

Soft X-ray laser using pumping of 3P and 4P levels of He-like and H-like ions  

DOE Patents [OSTI]

X-ray laser method and apparatus are disclosed for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4-50 cm[sup [minus]1]. 8 figs.

Hagelstein, P.L.

1987-04-21T23:59:59.000Z

56

Soft x-ray laser using pumping of 3P and 4P levels of He-like and H-like ions  

DOE Patents [OSTI]

X-ray laser method and apparatus for producing coherent radiation at, for example, energies of 40 to 189 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like rare gases or N, O, F, or C gases, with associated laser transition gains of 20 to 50 cm/sup -1/.

Hagelstein, P.

1982-03-26T23:59:59.000Z

57

Planetary systems based on a quantum-like model  

E-Print Network [OSTI]

Planetary systems have their origin in the gravitational collapse of a cloud of gas and dust. Through a process of accretion, is formed a massive star and a disk of planetesimals orbiting the star. Using a formalism analogous to quantum mechanics (quantum-like model), the star-planetesimal system is described and the flow quantizing the gravitational field theoretical model parameters are obtained. Goodness of fit (chi-square) of the observed data with model quantum-like, to the solar system, satellites, exoplanets and protoplanetary disk around HL Tauri is determined. Shows that the radius, eccentricity, energy, angular momentum and orbital inclination of planetary objects formed take discrete values depending only on the mass star.

T., N Poveda; C, N Y Buitrago

2015-01-01T23:59:59.000Z

58

Electroweak baryogenesis in the MSSM with vector-like superfields  

E-Print Network [OSTI]

Introducing heavy particles with strong couplings to the Higgs field can strengthen electroweak phase transition, through the entropy release mechanism from both bosons and fermions. We analyze the possibility of electroweak baryogenesis in the MSSM with new vector-like superfields. The new vector-like particles belong to the representation 5+5bar+10+10bar of SU(5). By analyzing in detail the effective potential at finite temperature, we show that a strongly first order electroweak phase transition in this model is ruled out by a combination of 125 GeV Higgs requirement, the bound for exotic quarks, the gluon fusion Higgs production rate and the Higgs diphoton decay rate as well as the electroweak precision measurement.

Xue Chang; Ran Huo

2014-03-06T23:59:59.000Z

59

Polarization mesurements of gamma ray bursts and axion like particles  

E-Print Network [OSTI]

A polarized gamma ray emission spread over a sufficiently wide energy band from a strongly magnetized astrophysical object like gamma ray bursts (GRBs) offers an opportunity to test the hypothesis of axion like particles (ALPs). Based on evidences of polarized gamma ray emission detected in several gamma ray bursts we estimated the level of ALPs induced dichroism, which could take place in the magnetized fireball environment of a GRB. This allows to estimate the sensitivity of polarization measurements of GRBs to the ALP-photon coupling. This sensitivity $\\gag\\le 2.2\\cdot 10^{-11} {\\rm GeV^{-1}}$ calculated for the ALP mass $m_a=10^{-3}~{\\rm eV}$ and MeV energy spread of gamma ray emission is competitive with the sensitivity of CAST and becomes even stronger for lower ALPs masses.

Andre Rubbia; Alexander Sakharov

2008-09-03T23:59:59.000Z

60

A note on Lorentz-like transformations and superluminal motion  

E-Print Network [OSTI]

In this extended note a critical discussion of an extension of the Lorentz transformations for velocities faster than the speed of light given recently by Hill and Cox is provided. The presented approach reveals the connection between faster-than-light speeds and the issue of isotropy of space. It is shown if the relative speed between the two inertial frames $v$ is greater than the speed of light, the condition of isotropy of space cannot be retained. It further specifies the respective transformations applying to $-\\inftytransformations are improper transformations since the Jacobian is negative. As a consequence, the wave operator, the light-cone and the volume element are not invariant under such Lorentz-like transformations. Also it is shown that such Lorentz-like transformations are not new and already known in the literature.

Congrui Jin; Markus Lazar

2014-04-14T23:59:59.000Z

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


61

Atomic data and theoretical X-ray spectra of Ge-like through V-like W ions  

SciTech Connect (OSTI)

The atomic structure and spectra of ten tungsten ions have been calculated using the Flexible Atomic Code. The calculations yield energy levels, radiative lifetimes, spectral line positions, transition probability rates, and oscillator strengths for the tungsten ions isoelectronic to germanium, W{sup 42+}, through vanadium, W{sup 51+}. Collisionalradiative models for high-temperature, low-density plasmas have been implemented to produce line emissivities for X-ray transitions in the 14 keV (312 ?) spectral interval. The Ge-like through V-like W ions are important in nuclear fusion research where their spectra may provide diagnostic information on magnetically confined plasmas.

Clementson, J., E-mail: joel.clementson@ipp.mpg.de [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Department of Physics, Lund University, SE-221 00 Lund (Sweden); Beiersdorfer, P. [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)] [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Brage, T. [Department of Physics, Lund University, SE-221 00 Lund (Sweden)] [Department of Physics, Lund University, SE-221 00 Lund (Sweden); Gu, M.F. [University of California at Berkeley, Berkeley, CA 94720 (United States)] [University of California at Berkeley, Berkeley, CA 94720 (United States)

2014-03-15T23:59:59.000Z

62

Roche Lobe Shapes for testing MOND-like Modified Gravity  

E-Print Network [OSTI]

Dark Matter (DM) theories and mass-tracing-light theories like MOND are by construction nearly degenerate on galactic scales, but not when it comes to the predicted shapes of Roche Lobes of a two-body system (e.g., a globular cluster orbiting a host galaxy). We show that the flattening of the Roche lobe is sensitive to the function mu(g) in modification of the law of gravity. We generalise the analytical results obtained in the deep-MOND limit by Zhao (2005, astro-ph/0511713 and astro-ph/0512425), and consider a binary in the framework of a MOND-like gravity modification function mu(g) or a general non-Keplerian gravity g \\propto R^-\\zeta. We give analytical expressions for the inner Lagrange point and Robe lobe axis ratios. The Roche lobe volume is proven to scale linearly with the true mass ratio, which applies to any mu(g), hence mass-tracing light models would overpredict the Roche lobe of a DM-poor globular cluster in a DM-rich host galaxy, and underpredict the size of a DM-richer dwarf satellite. The lobes are squashed with the flattening ~ 0.4 in the strong gravity and ~ 0.6 in the weak gravity; a precise measurement of the flattening could be used to verify the anisotropic dilation effect which is generic to MOND-like gravity. We generalise these results for extended mass distribution, and compare predicted Roche radii in different gravity theories with limiting radii of observed globular clusters and dwarf galaxy satellites.

HongSheng Zhao; LanLan Tian

2006-02-02T23:59:59.000Z

63

ASTEROIDAL GRANITE-LIKE MAGMATISM 4.53 GYR AGO  

SciTech Connect (OSTI)

Constraining the timescales for the evolution of planetary bodies in our solar system is essential for a complete understanding of planet-forming processes. However, frequent collisions between planetesimals in the early solar system obscured and destroyed much of the primitive features of the old, first-generation planetary bodies. The presence of differentiated, achondritic clasts in brecciated chondrites and of chondritic fragments in achondritic breccias clearly witness multiple processes such as metamorphism, magmatism, fragmentation, mixing, and reaccretion. Here, we report the results of ion microprobe Pb-Pb dating of a granite-like fragment found in a meteorite, the LL3-6 ordinary chondrite regolith breccia Adzhi-Bogdo. Eight spot analyses of two phosphate grains and other co-genetic phases of the granitoid give a Pb-Pb isochron age of 4.48 {+-} 0.12 billion years (95% confidence) and a model age of 4.53 {+-} 0.03 billion years (1{sigma}), respectively. These ages represent the crystallization age of a parental granite-like magma that is significantly older than those of terrestrial (4.00-4.40 Gyr) and lunar granites (3.88-4.32 Gyr) indicating that the clast in Adzhi-Bogdo is the oldest known granitoid in the solar system. This is the first evidence that granite-like formation is not only a common process on Earth, but also occurred on primitive asteroids in the early solar system 4.53 Gyr ago. Thus, the discovery of granite magmatism recorded in a brecciated meteorite provides an innovative idea within the framework of scenarios for the formation and evolution of planetary bodies and possibly exoplanetary bodies.

Terada, Kentaro [Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526 (Japan); Bischoff, Addi [Institut fuer Planetologie, Westflische Wilhelms-Universitt Muenster, Wilhelm-Klemm-Str. 10, 48149 Muenster (Germany)], E-mail: terada@sci.hiroshima-u.ac.jp

2009-07-10T23:59:59.000Z

64

Thermodynamic $R$-diagrams reveal solid-like fluid states  

E-Print Network [OSTI]

We evaluate the thermodynamic curvature $R$ for fluid argon, hydrogen, carbon dioxide, and water. For these fluids, $R$ is mostly negative, but we also find significant regimes of positive $R$, which we interpret as indicating solid-like fluid properties. Regimes of positive $R$ are present in all four fluids at very high pressure. Water has, in addition, a narrow slab of positive $R$ in the stable liquid phase near its triple point. Also, water is the only fluid we found having $R$ decrease on cooling into the metastable liquid phase, consistent with a possible second critical point.

George Ruppeiner; Peter Mausbach; Helge-Otmar May

2014-11-11T23:59:59.000Z

65

Cards let a PDP-11 work like a VAX  

SciTech Connect (OSTI)

The PDP-11 computer is still used widely, in part because of its many peripherals and software applications. For less than $7000, a new board-level product from American Information Systems Inc. promises to give the PDP-11 renewed life as a dual processor based on a UNIX-like operating system with more power than a VAX, its younger superminicomputer cousin. National Semiconductor Corp's 32032 is the foundation of the AIS/3210 system, which also includes a national 16082 memory-management chip and a 16081 floating-point-processor chip. One or more processor boards and memory boards from AIS plug directly into a 16-bit q bus.

Barney, C.

1984-05-17T23:59:59.000Z

66

RECOMBINATION RATE COEFFICIENTS OF Be-LIKE Si  

SciTech Connect (OSTI)

Recombination of Be-like Si{sup 10+} over the 0-43 eV electron-ion energy range is measured at the CRYRING electron cooler. In addition to radiative and dielectronic recombination, the recombination spectrum also shows strong contributions from trielectronic recombination. Below 100 meV, several very strong resonances associated with a spin-flip of the excited electron dominate the spectrum and also dominate the recombination in the photoionized plasma. The resonant plasma rate coefficients corrected for the experimental field ionization are in good agreement with calculated results by Gu and with AUTOSTRUCTURE calculations. All other calculations significantly underestimate the plasma rate coefficients at low temperatures.

Orban, I.; Boehm, S.; Schuch, R. [Department of Physics, Stockholm University, 10691 Stockholm (Sweden); Loch, S. D. [Department of Physics, Auburn University, Auburn, AL 36849 (United States)

2010-10-01T23:59:59.000Z

67

Effect of radiation-like solid on CMB anisotropies  

E-Print Network [OSTI]

We compute the power in the lowest multipoles of CMB anisotropies in the presence of radiation-like solid, a hypothetical new kind of radiation with nonzero shear modulus. If only the ordinary Sachs-Wolfe effect is taken into account, the shear modulus to energy density ratio must be in absolute value of order $10^{-5}$ or less for the theory to be consistent with observations within cosmic variance. With the integrated Sachs-Wolfe effect switched on, the constraint is relaxed almost by two orders of magnitude.

Vladimr Balek; Matej kovran

2015-01-28T23:59:59.000Z

68

Diamond and diamond-like films for transportation applications  

SciTech Connect (OSTI)

This section is a compilation of transparency templates which describe the goals of the Office of Transportation Materials (OTM) Tribology Program. The positions of personnel on the OTM are listed. The role and mission of the OTM is reviewed. The purpose of the Tribology Program is stated to be `to obtain industry input on program(s) in tribology/advanced lubricants areas of interest`. The objective addressed here is to identify opportunities for cost effective application of diamond and diamond-like carbon in transportation systems.

Perez, J.M.

1993-01-01T23:59:59.000Z

69

Piezo-antiferromagnetic effect of sawtooth-like graphene nanoribbons  

SciTech Connect (OSTI)

A type of sawtooth-like graphene nanoribbon (SGNR) with piezo-antiferromagnetic effect is studied numerically. The ground state of the studied SGNR changes from nonmagnetic state to antiferromagnetic state with uniaxial strain. The changes of the spin-charge distributions during the stretching are investigated. The Hubbard model reveals that the hopping integrals between the ?-orbitals of the carbon atoms are responsible to the piezo-antiferromagnetic effect. The study sheds light on the application of graphene-based structures to nanosensors and spintronic devices.

Zhao, Shangqian; Lu, Yan; Zhang, Yuchun; Lu, Wengang, E-mail: wglu@iphy.ac.cn; Liang, Wenjie [Institute of Physics, Chinese Academy of Sciences/Beijing National Laboratory for Condensed Matter Physics, Beijing 100190 (China); Wang, Enge [International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871 (China)

2014-05-19T23:59:59.000Z

70

Glass-Like Heat Conduction in Crystalline Semiconductors  

SciTech Connect (OSTI)

The thermal conductivity and structural properties of polycrystalline and single crystal semiconductor type-1 germanium clathrates are reported. Germanium clathrates exhibit thermal conductivities that are typical of amorphous materials. This behavior occurs in spite of their well-defined crystalline structure. The authors employ temperature dependent neutron diffraction data in investigating the displacements of the caged strontium atoms in Sr{sub 8}Ga{sub 16}Ge{sub 30} and their interaction with the polyhedral cages that entrap them. Their aim is to investigate the correlation between the structural properties and the low, glass-like thermal conductivity observed in this compound.

Nolas, G.S.; Cohn, J.L.; Chakoumakos, B.C.; Slack, G.A.

1999-06-13T23:59:59.000Z

71

Solar-like oscillations in a massive star  

E-Print Network [OSTI]

Seismology of stars provides insight into the physical mechanisms taking place in their interior, with modes of oscillation probing different layers. Low-amplitude acoustic oscillations excited by turbulent convection were detected four decades ago in the Sun and more recently in low-mass main-sequence stars. Using data gathered by the Convection Rotation and Planetary Transits mission, we report here on the detection of solar-like oscillations in a massive star, V1449 Aql, which is a known large-amplitude (b Cephei) pulsator.

Belkacem, K; Goupil, M -J; Lefvre, L; Baudin, F; Deheuvels, S; Dupret, M -A; Appourchaux, T; Scuflaire, R; Auvergne, M; Catala, C; Michel, E; Miglio, A; Montalban, J; Thoul, A; Talon, S; Baglin, A; Noels, A

2009-01-01T23:59:59.000Z

72

Comment on Quantum teleportation via GHZ-like state  

E-Print Network [OSTI]

Recently Yang et al. [Int. J. Theo. Phys. 48 (2009) 516] have shown that an unknown qubit can be teleported by using a particular GHZ-like state as quantum channel. However, there are several errors in the calculation which lead to incorrect conclusions. The errors have been indicated and corrected. It is also noted that their scheme and the independently proposed teleportation scheme of Zhang et al. [Int. J. Theo. Phys. 48 (2009) 3331] uses quantum channel from the same family and any state of that family may be used for teleportation.

Anindita Banerjee; Kamal Patel; Anirban Pathak

2010-06-08T23:59:59.000Z

73

Introducing Chaos in Economic Gas-like Models  

E-Print Network [OSTI]

This paper considers ideal gas-like models of trading markets, where each agent is identified as a gas molecule that interacts with others trading in elastic or money-conservative collisions. Traditionally, these models introduce different rules of random selection and exchange between pair agents. Unlike these traditional models, this work introduces a chaotic procedure able of breaking the pairing symmetry of agents (i,j)->(j,i). Its results show that, the asymptotic money distributions of a market under chaotic evolution can exhibit a transition from Gibbs to Pareto distributions, as the pairing symmetry is progressively broken.

C. Pellicer-Lostao; R. Lopez-Ruiz

2009-04-02T23:59:59.000Z

74

Method and apparatus for making diamond-like carbon films  

DOE Patents [OSTI]

Ion-assisted plasma enhanced deposition of diamond-like carbon (DLC) films on the surface of photovoltaic solar cells is accomplished with a method and apparatus for controlling ion energy. The quality of DLC layers is fine-tuned by a properly biased system of special electrodes and by exact control of the feed gas mixture compositions. Uniform (with degree of non-uniformity of optical parameters less than 5%) large area (more than 110 cm.sup.2) DLC films with optical parameters varied within the given range and with stability against harmful effects of the environment are achieved.

Pern, Fu-Jann (Golden, CO); Touryan, Kenell J. (Indian Hills, CO); Panosyan, Zhozef Retevos (Yerevan, AM); Gippius, Aleksey Alekseyevich (Moscow, RU)

2008-12-02T23:59:59.000Z

75

Flavor development in peanut protein cheese-like products  

E-Print Network [OSTI]

was made basi c with NaOH, distilled, and the ammonia was trapped in 41! boric acid. The ammonia was titrated directly with standardized HC1. The calculations were as follows: mg sample where S = ml HC1 for sample titration, B = ml HCl for blank titra... of experimental cheese-like products made from an aqueous processed peanut protein isolate and a commercial peanut flour. Parameters of flavor develop- ment monitored were acid development, degree of proteolysis and lipolysis, diagnostic microbial count...

Bath, Sheila Clare

1978-01-01T23:59:59.000Z

76

Create The Look You Like-With Color.  

E-Print Network [OSTI]

and 8-1326 Create The Look You Like- With Texture. DIMENSIONS OF COLOR To become more familiar with the dimensions of color, let's consider a few principles. Hue refers to the name of a color. Primary hues are red, yellow and blue. These cannot... and are arranged between the primary colors on the color Wheel : purple or violet-a combination of red and blue green - a combination of blue and yellow orange-a combination of red and yellow , Extension consumer information specailist, The Texas A&M University...

Rhoades, Beverly

1984-01-01T23:59:59.000Z

77

amorphous diamond-like carbon: Topics by E-print Network  

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

2 Atmospheric plasma deposition of diamond-like carbon coatings Angela M. Ladwig a,b, Materials Science Websites Summary: Atmospheric plasma deposition of diamond-like carbon...

78

adherent diamond-like carbon: Topics by E-print Network  

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

2 Atmospheric plasma deposition of diamond-like carbon coatings Angela M. Ladwig a,b, Materials Science Websites Summary: Atmospheric plasma deposition of diamond-like carbon...

79

E-Print Network 3.0 - acrodermatitis enteropathica-like syndrome...  

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

acrodermatitis enteropathica-like syndrome Search Powered by Explorit Topic List Advanced Search Sample search results for: acrodermatitis enteropathica-like syndrome Page: << < 1...

80

Natural SUSY with a bino- or wino-like LSP  

E-Print Network [OSTI]

In natural SUSY models higgsinos are always light because \\mu^2 cannot be much larger than M_Z^2, while squarks and gluinos may be very heavy. Unless gluinos are discovered at LHC13, the commonly assumed unification of gaugino mass parameters will imply correspondingly heavy winos and binos, resulting in a higgsino-like LSP and small inter-higgsino mass splittings. The small visible energy release in higgsino decays makes their pair production difficult to detect at the LHC. Relaxing gaugino mass universality allows for relatively light winos and binos without violating LHC gluino mass bounds and without affecting naturalness. In the case where the bino mass M_1mixed bino-higgsino LSP with instead sizable w_1-z_1 and z_2-z_1 mass gaps. The thermal neutralino abundance can match the measured dark matter density in contrast to models with a higgsino-like LSP where WIMPs (weakly interacting massive particles) are underproduced by factors of 10-15. If instead M_2<~ \\mu, then one o...

Baer, Howard; Huang, Peisi; Mickelson, Dan; Padeffke-Kirkland, Maren; Tata, Xerxes

2015-01-01T23:59:59.000Z

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


81

Spectral Fingerprints of Earth-like Planets Around FGK Stars  

E-Print Network [OSTI]

We present model atmospheres for an Earth-like planet orbiting the entire grid of main sequence FGK stars with effective temperatures ranging from Teff = 4250K to Teff = 7000K in 250K intervals. We model the remotely detectable spectra of Earth-like planets for clear and cloudy atmospheres at the 1AU equivalent distance from the VIS to IR (0.4 {\\mu}m - 20 {\\mu}m) to compare detectability of features in different wavelength ranges in accordance with JWST and future design concepts to characterize exo-Earths. We also explore the effect of the stellar UV levels as well as spectral energy distribution on a terrestrial atmosphere concentrating on detectable atmospheric features that indicate habitability on Earth, namely: H2O, O3, CH4, N2O and CH3Cl. The increase in UV dominates changes of O3, OH, CH4, N2O and CH3Cl whereas the increase in stellar temperature dominates changes in H2O. The overall effect as stellar effective temperatures and corresponding UV increase, is a lower surface temperature of the planet du...

Rugheimer, Sarah; Zsom, Andras; Segura, Antgona; Sasselov, Dimitar

2012-01-01T23:59:59.000Z

82

Starobinsky-like inflation induced by f(T) gravity  

E-Print Network [OSTI]

We study a single fluid component in a flat like universe governed by $f(T)$ gravity theories. The flat like universe does not imply a vanishing sectional curvature $k$, but assuming a vanishing of the coefficient of $k$ in the modified Friedmann equations. This enables us to extract a compatible pair of a scale factor $a(t)$ and an inverse power series $f(T)$. The Equation of State (EoS) evolves similarly in all models $k=0, \\pm 1$. In large Hubble ($H$)-spacetime the theory is consistent with the inflationary universe scenario and respects the conservation principle. We study the case when the teleparallel torsion is made of a single scalar field. The theory produces Starobinsky model naturally at its zeroth order without using a conformal transformation. Higher order solutions continuously interpolate between Starobinsky and quadratic inflation models. The slow-roll analysis shows double solutions so that for a single value of the spectral index $n_{s}$ the theory can predict double tensor-to-scalar ratios $r$ of Planck and BICEP2 data.

W. El Hanafy; G. L. Nashed

2014-10-08T23:59:59.000Z

83

Likely social impacts of proposed national-level policy initiatives  

SciTech Connect (OSTI)

The results are described of an investigation of likely social effects of enacting nine proposed national-level policy initiatives to accelerate development and use of solar energy. This study is part of the Technology Assessment of Solar Energy Systems (TASE) project supported by the US Department of Energy. The report presents general social impact information about the variety of ways in which the American people could be affected by enactment of these initiatives. It identifies the effects of each initiative on individuals, groups, organizations, communities, and society as a whole. In addition, it provides a framework for organizing a myriad of impact information into a set of conceptually exclusive impact categories. It illustrates that social impacts means effects on people as individuals, groups, organizations, and communities as well as on the infrastructure of society. Finally, it demonstrates the importance of specifying an audience of impact with a case example from the residential rental market.

Piernot, C.A.; Rothweiler, M.A.; Levine, A.; Crews, R.

1981-03-01T23:59:59.000Z

84

Self-cleaning skin-like prosthetic polymer surfaces  

DOE Patents [OSTI]

An external covering and method of making an external covering for hiding the internal endoskeleton of a mechanical (e.g., prosthetic) device that exhibits skin-like qualities is provided. The external covering generally comprises an internal bulk layer in contact with the endoskeleton of the prosthetic device and an external skin layer disposed about the internal bulk layer. The external skin layer is comprised of a polymer composite with carbon nanotubes embedded therein. The outer surface of the skin layer has multiple cone-shaped projections that provide the external skin layer with superhydrophobicity. The carbon nanotubes are preferably vertically aligned between the inner surface and outer surface of the external skin layer in order to provide the skin layer with the ability to transmit heat. Superhydrophobic powders may optionally be used as part of the polymer composite or applied as a coating to the surface of the skin layer to enhance superhydrophobicity.

Simpson, John T. (Clinton, TN); Ivanov, Ilia N. (Knoxville, TN); Shibata, Jason (Manhattan Beach, CA)

2012-03-27T23:59:59.000Z

85

Temperature of projectile like fragments in heavy ion collisions  

E-Print Network [OSTI]

A model in which a projectile like fragment can be simply regarded as a remnant after removal of some part of the projectile leads to an excited fragment. This excitation energy can be calculated with a Hamiltonian that gives correct nuclear matter binding, compressibility and density distribution in finite nuclei. In heavy ion collisions the model produces a dependence of excitation energy on impact parameter which appears to be correct but the magnitude of the excitation energy falls short. It is argued that dynamic effects left out in the model will increase this magnitude. The model can be directly extended to include dynamics but at the expense of increased computation. For many calculations for observables, a temperature is an easier tool to use rather than an excitation energy. Hence temperature dependences on impact parameter in heavy ion collisions are displayed.

Gupta, S Das; Chaudhuri, G

2013-01-01T23:59:59.000Z

86

Temperature of projectile like fragments in heavy ion collisions  

E-Print Network [OSTI]

A model in which a projectile like fragment can be simply regarded as a remnant after removal of some part of the projectile leads to an excited fragment. This excitation energy can be calculated with a Hamiltonian that gives correct nuclear matter binding, compressibility and density distribution in finite nuclei. In heavy ion collisions the model produces a dependence of excitation energy on impact parameter which appears to be correct but the magnitude of the excitation energy falls short. It is argued that dynamic effects left out in the model will increase this magnitude. The model can be directly extended to include dynamics but at the expense of increased computation. For many calculations for observables, a temperature is an easier tool to use rather than an excitation energy. Hence temperature dependences on impact parameter in heavy ion collisions are displayed.

S. Das Gupta; S. Mallik; G. Chaudhuri

2013-09-27T23:59:59.000Z

87

Studies of Charmonium-Like States at BaBar  

SciTech Connect (OSTI)

Several charmonium-like states above D{bar D} threshold have been discovered at the Belle and BABAR B-factories. Some of these states are produced via Initial State Radiation (e.g. Y(4260) and Y(4350)), and some are observed in B-meson decays (e.g. X(3872), and Y(3940)). The Belle observations of the enhancements in the {Psi}(2S){pi}{sup -} and {chi}{sub cl}{pi}{sup -}, i.e. the Z(4430){sup -}, Z{sub 1}(4050){sup -}, and Z{sub 2}(4250){sup -}, have generated a great deal of interest, because such states must have minimum quark content (c{bar c}d{bar u}), i.e. these are four-quark states. The BABAR Collaboration does not confirm the existence of the Z(4430){sup -}.

Mokhtar, Arafat Gabareen; /SLAC

2012-04-09T23:59:59.000Z

88

CAVITY LIKE COMPLETIONS IN WEAK SANDS PREFERRED UPSTREAM MANAGEMENT PRACTICES  

SciTech Connect (OSTI)

The technology referred to as Cavity Like Completions (CLC) offers a new technique to complete wells in friable and unconsolidated sands. A successfully designed CLC provides significant increases in well PI (performance index) at lower costs than alternative completion techniques. CLC technology is being developed and documented by a partnership of major oil and gas companies through a GPRI (Global Petroleum Research Institute) joint venture. Through the DOE-funded PUMP program, the experiences of the members of the joint venture will be described for other oil and gas producing companies. To date six examples of CLC completions have been investigated by the JV. The project was performed to introduce a new type of completion (or recompletion) technique to the industry that, in many cases, offers a more cost effective method to produce oil and gas from friable reservoirs. The project's scope of work included: (1) Further develop theory, laboratory and field data into a unified model to predict performance of cavity completion; (2) Perform at least one well test for cavity completion (well provided by one of the sponsor companies); (3) Provide summary of geo-mechanical models for PI increase; and (4) Develop guidelines to evaluate success of potential cavity completion. The project tracks the experiences of a joint industry consortium (GPRI No. 17) over a three year period and compiles results of the activities of this group.

Ian Palmer; John McLennan

2004-04-30T23:59:59.000Z

89

Energy Levels Of Hydrogen-Like Atomsand Fundamental Constants  

E-Print Network [OSTI]

The present review includes the description of theoretical methods for the investigations of the spectra of hydrogen-like systems. Various versions of the quasipotential approach and the method of the effective Dirac equation are considered. The new methods, which have been developed in the eighties, are described. These are the method for the investigation of the spectra by means of the quasipotential equation with the relativistic reduced mass and the method for a selection of the logarithmic corrections by means of the renormalization group equation. The special attention is given to the construction of a perturbation theory and the selection of graphs, whereof the contributions of different orders of $\\alpha$, the fine structure constant, to the energy of the fine and hyperfine splitting in a positronium, a muonium and a hydrogen atom could be calculated. In the second part of this article the comparison of the experimental results and the theoretical results concerning the wide range of topics is produced. They are the fine and hyperfine splitting in the hydrogenic systems, the Lamb shift and the anomalous magnetic moments of an electron and a muon. Also, the problem of the precision determination of a numerical value of the fine structure constant, connected with the above topics, is discussed.

Valeri V. Dvoeglazov; Rudolf N. Faustov; Yuri N. Tyukhtyaev

1994-03-27T23:59:59.000Z

90

ANGULAR MOMENTUM TRANSFER IN VELA-LIKE PULSAR GLITCHES  

SciTech Connect (OSTI)

The angular momentum transfer associated with Vela-like glitches has never been calculated directly within a realistic scenario for the storage and release of superfluid vorticity; therefore, the explanation of giant glitches in terms of vortices has not yet been tested against observations. We present the first physically reasonable model, both at the microscopic and macroscopic level (spherical geometry, n = 1 polytropic density profile, density-dependent pinning forces compatible with vortex rigidity), to determine where in the star the vorticity is pinned, how much of it is pinned, and for how long. For standard neutron star parameters (M = 1.4 M{sub Sun }, R{sub s} = 10 km, {Omega}-dot = {Omega}-dot{sub Vela} = -10{sup -10} Hz s{sup -1}), we find that maximum pinning forces of order f{sub m} Almost-Equal-To 10{sup 15} dyn cm{sup -1} can accumulate {Delta}L{sub gl} Almost-Equal-To 10{sup 40} erg s of superfluid angular momentum, and release it to the crust at intervals {Delta}t{sub gl} Almost-Equal-To 3 years. This estimate of {Delta}L{sub gl} is one order of magnitude smaller than that implied indirectly by current models for post-glitch recovery, where the core and inner-crust vortices are taken as physically disconnected; yet, it successfully yields the magnitudes observed in recent Vela glitches for both jump parameters, {Delta}{Omega}{sub gl} and {Delta}{Omega}-dot{sub gl}, provided one assumes that only a small fraction (<10%) of the total star vorticity is coupled to the crust on the short timescale of a glitch. This is reasonable in our approach, where no layer of normal matter exists between the core and the inner-crust, as indicated by existing microscopic calculation. The new scenario presented here is nonetheless compatible with current post-glitch models.

Pizzochero, Pierre M., E-mail: pierre.pizzochero@mi.infn.it [Dipartimento di Fisica, Universita degli Studi di Milano, and Istituto Nazionale di Fisica Nucleare, sezione di Milano, Via Celoria 16, 20133 Milano (Italy)

2011-12-10T23:59:59.000Z

91

E-Print Network 3.0 - analysing solar-like oscillating Sample...  

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

of solar-like stars (asteroseismology) became... , the intensity oscillations of the Sun are at the micro-magnitude level. The solar-like oscillations are driven... , and all...

92

Composition of Dioxin-like PCBs in Fish: An Application for Risk  

E-Print Network [OSTI]

Composition of Dioxin-like PCBs in Fish: An Application for Risk Assessment S A T Y E N D R A P . B in Aroclors and that toxicity varies considerably among the congeners with dioxin-like PCBs (dl

Jackson, Don

93

Automatic deployment of autonomous cars in a robotic urban-like environment (RULE)  

E-Print Network [OSTI]

We present a computational framework and experimental setup for deployment of autonomous cars in a miniature Robotic Urban-Like Environment (RULE). The specifications are given in rich, human-like language as temporal logic ...

Itani, Sara T.

94

A Radar-like Iron based Nanohybrid as an Efficient and Stable...  

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

Radar-like Iron based Nanohybrid as an Efficient and Stable Electrocatalyst for Oxygen Reduction. A Radar-like Iron based Nanohybrid as an Efficient and Stable Electrocatalyst for...

95

SciTech Connect: A Distinct MaoC-like Enoyl-CoA Hydratase Architecture...  

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

A Distinct MaoC-like Enoyl-CoA Hydratase Architecture Mediates Cholesterol Catabolism in Mycobacterium tuberculosis Citation Details In-Document Search Title: A Distinct MaoC-like...

96

Ratchet-like motion of a shaken drop Xavier Noblin, Richard Kofman, and Franck Celestini  

E-Print Network [OSTI]

Ratchet-like motion of a shaken drop Xavier Noblin, Richard Kofman, and Franck Celestini the underlying mechanism leading to this ratchet-like motion of the drop. Our model includes the particular case do not provide the ratchet- like asymmetry necessary to induce a net drop displace- ment. Brunet et

Boyer, Edmond

97

Fractal-like tree networks reducing the thermal conductivity Boming Yu1,  

E-Print Network [OSTI]

Fractal-like tree networks reducing the thermal conductivity Boming Yu1, * and Baowen Li1,2 1 conductivity of composites with embedded self-similar H-shaped fractal-like tree networks is studied that the thermal conductivity of the H-shaped fractal-like tree networks does not obey Murray's law. The present

Li, Baowen

98

Edinburgh Research Explorer Plasmodium falciparum-like parasites infecting wild apes in  

E-Print Network [OSTI]

Edinburgh Research Explorer Plasmodium falciparum-like parasites infecting wild apes in southern, Peeters, M, Sharp, PM, Bushman, FD & Hahn, BH 2013, 'Plasmodium falciparum-like parasites infecting wild claim. Download date: 28. Jun. 2014 #12;Plasmodium falciparum-like parasites infecting wild apes

Hall, Christopher

99

Dioxin-like, non-dioxin like PCB and PCDD/F contamination in European eel1 (Anguilla anguilla) from the Loire estuarine continuum: spatial and biological2  

E-Print Network [OSTI]

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 1 Dioxin-like, non-dioxin like PCB and PCDD/F contamination in European eel1 (Anguilla anguilla) from the Loire, isabelle.blanchet-letrouve@ac-nantes.fr12 13 14 Abstract15 To characterize the eel contamination by dioxin

Paris-Sud XI, Université de

100

I Like it When You Act Like a Leader: A Role Congruity Account of Romantic Desire for Powerful Opposite-Sex Others  

E-Print Network [OSTI]

I LIKE IT WHEN YOU ACT LIKE A LEADER: A ROLE CONGRUITY ACCOUNT OF ROMANTIC DESIRE FOR POWERFUL OPPOSITE-SEX OTHERS A Thesis by BRIAN M. WILKEY Submitted to the Office of Graduate Studies of Texas A&M University in partial... Copyright 2013 Brian M. Wilkey ii ABSTRACT Powerful people perform observable agentic behaviors (e.g., directing tasks), and people expect powerful people to act in these agentic ways. Furthermore, Role Congruity Theory predicts that people...

Wilkey, Brian 1987-

2013-01-11T23:59:59.000Z

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


101

The GammeV suite of experimental searches for axion-like particles  

SciTech Connect (OSTI)

We report on the design and results of the GammeV search for axion-like particles and for chameleon particles. We also discuss plans for an improved experiment to search for chameleon particles, one which is sensitive to both cosmological and power-law chameleon models. Plans for an improved axion-like particle search using coupled resonant cavities are also presented. This experiment will be more sensitive to axion-like particles than stellar astrophysical models or current helioscope experiments.

Steffen, Jason H.; /Fermilab; Upadhye, Amol; /KICP, Chicago /Chicago U., EFI

2009-08-01T23:59:59.000Z

102

New sub-family of lysozyme-like proteins shows no catalytic activity...  

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

modest sequence similarity to phage-like lysozyme (N-acetylmuramidase) but appears to lack essential catalytic residues that are strictly conserved in all lysozymes. Close...

103

Radiation reaction and four-momentum conservation for point-like dyons  

E-Print Network [OSTI]

We construct for a system of point-like dyons a conserved energy-momentum tensor entailing finite momentum integrals, that takes the radiation reaction into account.

K. Lechner

2006-08-03T23:59:59.000Z

104

E-Print Network 3.0 - ameliorate seizure-like behaviors Sample...  

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

revisit the role of K o... a similarly slow recovery. Thus, this perturbation of the PY firing did not elicit seizure-like activity Source: Bazhenov, Maxim - Computational...

105

E-Print Network 3.0 - autonomous plasmid-like replication Sample...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: autonomous plasmid-like replication Page: << < 1 2 3 4 5 > >> 1 Molecular Cell Short Article...

106

Sustainability E-Newsletter Fall/Winter 2013-2014 Like "Office of  

E-Print Network [OSTI]

Sustainability E-Newsletter Fall/Winter 2013-2014 Like "Office of Environmental Policy" on FacebookDay..........................................................................................2 Campus Sustainability Day our Sustainability Coordinators......................................................6 Campus

Alpay, S. Pamir

107

Electronic structure of the Si(111):GaSe van der Waals-like surface termination  

E-Print Network [OSTI]

Electronic structure of the Si(111):GaSe van der Waals-like surface termination Reiner Rudolph-like surface termination has been determined by angle-resolved photoelectron spectroscopy using photons. This explains both the absence of a surface core-level shift in Si 2p photoelectron spectra of the terminated

Olmstead, Marjorie

108

Core-softened Fluids, Water-like Anomalies and the Liquid-Liquid Critical Points  

E-Print Network [OSTI]

. INTRODUCTION Water is characterized by well-known thermodynamic and kinetic liquid-state anomalies; for examplePREPRINT Core-softened Fluids, Water-like Anomalies and the Liquid-Liquid Critical Points Evy simulations are used to examine the relationship between water-like anoma- lies and the liquid-liquid critical

Barbosa, Marcia C. B.

109

The flow of red blood cells through a narrow spleen-like slit Jonathan B. Freund  

E-Print Network [OSTI]

The flow of red blood cells through a narrow spleen-like slit Jonathan B. Freund Citation: Phys OF FLUIDS 25, 110807 (2013) The flow of red blood cells through a narrow spleen-like slit Jonathan B are perhaps the smallest blood passages in the body, and red blood cells must deform significantly to pass

Freund, Jonathan B.

110

Electrical and optical properties of diamond-like carbon films deposited by pulsed laser ablation  

E-Print Network [OSTI]

films, which make them more useful than polycrystalline diamond films for many applications. For exampleElectrical and optical properties of diamond-like carbon films deposited by pulsed laser ablation K e i n f o Available online 11 March 2010 Keyword: Pulsed laser ablation Diamond-like carbon films

Bristol, University of

111

On the Doi Model for the suspensions of rod-like molecules in compressible fluids  

E-Print Network [OSTI]

On the Doi Model for the suspensions of rod-like molecules in compressible fluids Hantaek Bae and Konstantina Trivisa Key words: Doi model, suspensions of rod-like molecules, fluid-particle interaction model, compressible Navier-Stokes equations, Fokker-Planck-type equation. Abstract Polymeric fluids arise in many

Milchberg, Howard

112

`Liking' and `wanting' food rewards: Brain substrates and roles in eating disorders Kent C. Berridge  

E-Print Network [OSTI]

`Liking' and `wanting' food rewards: Brain substrates and roles in eating disorders Kent C Brainstem Parabrachial nucleus Dopamine Opioid Addiction What brain reward systems mediate motivational? This article surveys recent findings regarding brain mechanisms of hedonic `liking', such as the existence

Berridge, Kent

113

Decoding Turbo-Like Codes via Linear Programming Jon Feldman David R. Karger  

E-Print Network [OSTI]

Decoding Turbo-Like Codes via Linear Programming Jon Feldman David R. Karger MIT Laboratory algorithm for decoding turbo-like codes based on linear programming. We prove that for the case of Repeat is the path corresponding to the original transmitted code word. 1 Introduction The introduction of turbo

114

A Privacy Preservation Model for Facebook-like Social Network Systems  

E-Print Network [OSTI]

A Privacy Preservation Model for Facebook-like Social Network Systems Philip W. L. Fong, Mohd Anwar-0-7731-0659 (print) ISBN 978-0-7731-0660 (online) #12;A Privacy Preservation Model for Facebook-Like Social Network growth in the popularity of social network systems, with Facebook being an archetypical example. Due

Regina, University of

115

NEUTRON LIFETIME EXPERIMENT USING UCN STORAGE IN AN `ACCORDION-LIKE' TRAP  

E-Print Network [OSTI]

NEUTRON LIFETIME EXPERIMENT USING UCN STORAGE IN AN `ACCORDION-LIKE' TRAP BY ASHISH M. DESAI determination of the neutron lifetime has an impact on particle physics and cosmology. We report progress towards a measurement of the neutron lifetime using an accordion-like storage trap. Ultracold neutrons

Steyerl, Albert

116

Pencil-Like Sketch Rendering of 3D Scenes Using Trajectory Planning and Dynamic Tracking  

E-Print Network [OSTI]

Pencil-Like Sketch Rendering of 3D Scenes Using Trajectory Planning and Dynamic Tracking Gnay non-photorealistic rendering method to render 3D scenes in the form of pencil-like sketches. This work then produces the rendered sketch, whose characteristics can be adjusted with a set of trajectory and tracking

Kara, Levent Burak

117

LOCAL UNIFIED MODELS OF BACKSCATTERING FROM OCEAN-LIKE SURFACES AT MODERATE INCIDENCE ANGLES  

E-Print Network [OSTI]

expanded up to the order two, like the SSA2 and LCA2. Electromagnetic scattering by rough surfaces, Random of the scattering matrix as SSA2, like the LCA2, were published by Elfouhaily et al. [10, 11]. It is well known is presented and tested for microwave frequencies and different wind speeds. The paper is organized as follows

Paris-Sud XI, Université de

118

MesoNet: A Mesoscopic Simulation Model of a Router-Level Internet-like Network  

E-Print Network [OSTI]

MesoNet: A Mesoscopic Simulation Model of a Router-Level Internet- like Network MesoNet is a mesoscopic (medium scale) simulation model of a router-level Internet-like network. The model, written in SLX transfer and associated multiplier on file size. During simulation, model state is captured at each user

119

Method and apparatus for assessing material properties of sheet-like materials  

DOE Patents [OSTI]

Apparatus for producing an indication of a material property of a sheet-like material according to the present invention may comprise an excitation source for vibrating the sheet-like material to produce at least one traveling wave therein. A light source configured to produce an object wavefront and a reference wavefront directs the object wavefront toward the sheet-like material to produce a modulated object wavefront. A modulator operatively associated with the reference wavefront modulates the reference wavefront in synchronization with the traveling wave on the sheet-like material to produce a modulated reference wavefront. A sensing medium positioned to receive the modulated object wavefront and the modulated reference wavefront produces an image of the traveling wave in the sheet-like material, the image of the anti-symmetric traveling wave being related to a displacement amplitude of the anti-symmetric traveling wave over a two-dimensional area of the vibrating sheet-like material. A detector detects the image of the traveling wave in the sheet-like material.

Telschow, Kenneth L. (Idaho Falls, ID); Deason, Vance A. (Idaho Falls, ID)

2002-01-01T23:59:59.000Z

120

Gas-like state of $?$ clusters around $^{16}$O core in $^{24}$Mg  

E-Print Network [OSTI]

We have studied gas-like states of $\\alpha$ clusters around an $^{16}$O core in $^{24}$Mg based on a microscopic $\\alpha$-cluster model. This study was performed by introducing a Monte Carlo technique for the description of the THSR (Tohsaki Horiuchi Schuck R\\"{o}pke) wave function, and the coupling effect to other low-lying cluster states was taken into account. A large isoscalar monopole ($E0$) transition strength from the ground to the gas-like state is discussed. The gas-like state of two $\\alpha$ clusters in $^{24}$Mg around the $^{16}$O core appears slightly below the 2$\\alpha$-threshold e

T. Ichikawa; N. Itagaki; T. Kawabata; Tz. Kokalova; W. von Oertzen

2011-02-08T23:59:59.000Z

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


121

Development of Personality in Early and Middle Adulthood: Set Like Plaster or Persistent Change?  

E-Print Network [OSTI]

Development of Personality in Early and Middle Adulthood: Set Like Plaster or Persistent Change-factor theory proposes the plaster hypothesis: All personality traits stop changing by age 30. In contrast

Pillow, Jonathan

122

Experimental visualization of the near-boundary hydrodynamics about fish-like swimming bodies  

E-Print Network [OSTI]

This thesis takes a look at the near boundary flow about fish-like swimming bodies. Experiments were performed up to Reynolds number 106 using laser Doppler velocimetry and particle imaging techniques. The turbulence in ...

Techet, Alexandra Hughes

2001-01-01T23:59:59.000Z

123

Detection of NonSymmetrical Damage in Smart PlateLike Structures 1  

E-Print Network [OSTI]

and compared to experimental data obtained from tests on cantilever aluminum plate­like structures damaged such as the aerospace, automotive and machine­tool industries. In particular, smart structures with self actuating

124

New Agonists / Antagonists for Toll-like Receptors (TLR7 and TLR9)  

E-Print Network [OSTI]

, proteins, nucleic ac- ids, and the like. TLR-receptors activate the innate and, in certain cases, also the immune system is up-regulated despite the lack of ,,foreign" signal, as is the case in most au- toimmune

125

Fracture characterization of clays and clay-like materials using flattened Brazilian Test  

E-Print Network [OSTI]

Fracture mechanics has been used for many years to study the mechanical behavior of brittle and quasi-brittle materials like concrete, rock, wood, and ceramics. To date, the application of fracture mechanics to soils has ...

Agaiby, Shehab Sherif Wissa

2013-01-01T23:59:59.000Z

126

Managing prisons using a business-like approach: a case study of the Scottish Prison Service  

E-Print Network [OSTI]

The primary aim of this research is to examine the extent which prison management has been influenced by New Public Management (NPM). Much has been written about the growing influence of NPM on public services like health, ...

Sangkhanate, Assanee

2012-06-26T23:59:59.000Z

127

Point-like source solutions in modified gravity with a critical acceleration  

E-Print Network [OSTI]

We consider equations of modified gravity involving critical accelerations and find its solutions for the point-like source by suggesting the appropriate symmetry of metrics in the empty space-time.

Ja. V. Balitsky; V. V. Kiselev

2014-04-10T23:59:59.000Z

128

E-Print Network 3.0 - ap1-like transcription factor Sample Search...  

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

Group A putative stimulatory role for activator turnover in Summary: regulates the UV-induced activation of the AP-1-like transcription factor Gcn4. Genes Dev. 15, 128... ,...

129

Tricking Iron into Acting like a Rare-earth Element | The Ames...  

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

Tricking Iron into Acting like a Rare-earth Element By slipping iron between two nitrogen atoms in a lithium matrix, researchers are able to trick iron into having magnetic...

130

Students experiencing flu-like symptoms, such as fever with cough and/or sore throat,  

E-Print Network [OSTI]

Students experiencing flu-like symptoms, such as fever with cough and/or sore throat, should other difficulty breathing beyond a typical cough. Inform Undergraduates: Notify the director

Bou-Zeid, Elie

131

A Framework like a tool for specify motivating Collaborative Learning Participatory Simulations  

E-Print Network [OSTI]

1 A Framework like a tool for specify motivating Collaborative Learning Participatory Simulations that collaborative participatory simulations improve teaching and learning, increasing motivation inside. Keywords: Handhelds. Gestures, Sketches. Collaborative Learning. Participatory Simulation. 1. Introduction

Antunes, Pedro

132

Two-loop self-energy correction in high-Z hydrogen-like ions  

E-Print Network [OSTI]

A complete evaluation of the two-loop self-energy diagrams to all orders in Z\\alpha is presented for the ground state of H-like ions with Z\\ge 40.

V. A. Yerokhin; P. Indelicato; V. M. Shabaev

2003-02-28T23:59:59.000Z

133

Computational studies on the factors influencing stabilities of collagen-like peptides  

E-Print Network [OSTI]

In this study, thermodynamic integration and molecular dynamics methods were used to elucidate the factors affecting stabilities of collagen-like peptides. We proposed to investigate three specific aspects: (1) the stabilizing ...

Chang, Nai-yuan, 1973-

2004-01-01T23:59:59.000Z

134

Vehicle Technologies Office Merit Review 2014: Gasoline-Like Fuel Effects on Advanced Combustion Regimes  

Broader source: Energy.gov [DOE]

Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about gasoline-like...

135

Resonantly photo-pumped nickel-like erbium X-ray laser  

DOE Patents [OSTI]

A resonantly photo-pumped X-ray laser (10) that enhances the gain of seve laser lines that also lase because of collisional excitations and recombination processes, is described. The laser comprises an aluminum (12) and erbium (14) foil combination (16) that is driven by two beams (18, 20) of intense line focused (22, 24) optical laser radiation. Ground state nickel-like erbium ions (34) are resonantly photo-pumped by line emission from hydrogen-like aluminum ions (32).

Nilsen, Joseph (Livermore, CA)

1990-01-01T23:59:59.000Z

136

Particular Solutions If the differential equation is actually modeling something (like the  

E-Print Network [OSTI]

of milk as a function of time) it is likely that you will know a specific value (like the fact that milk = ln 3320.12 1000 10 = 0.12 So A(t) = 1000e0.12t #12;Newton's Law of Cooling Newton's law of cooling is the rate of cooling and t is time. Since the object is going from higher temperature to cooler temperature

Thomases, Becca

137

Scattering of KleinGordon particles by a Kink-like potential  

SciTech Connect (OSTI)

The KleinGordon equation for the non-minimal vector and a scalar Kink-like potential is solved in terms of the hypergeometric functions. The scattering problem, i.e. the transmission and reflection coefficients, is studied as well. -- Highlights: The KleinGordon equation for the non-minimal vector and a scalar Kink-like potential is solved. We have calculated the corresponding transmission and reflection coefficients. We discussed the behavior of the reflection and transmission coefficients vs. energy.

Hassanabadi, H., E-mail: h.hasanabadi@shahroodut.ac.ir [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of); Lu, Liangliang [National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing, 210093 (China)] [National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing, 210093 (China); Maghsoodi, E. [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of)] [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of); Liu, Guanghui [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China)] [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China); Zarrinkamar, S. [Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar (Iran, Islamic Republic of)] [Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar (Iran, Islamic Republic of)

2014-03-15T23:59:59.000Z

138

Wall-associated kinase-like polypeptide mediates nutritional status perception and response  

DOE Patents [OSTI]

The disclosure relates to methods for modulating plant growth and organogenesis using dominant-negative receptor-like kinases. The disclosure further provides a method for increasing plant yield relative to corresponding wild type plants comprising modulating the expression in a plant of a nucleic acid encoding a Wall-Associated Kinase-like 14 polypeptide or a homolog thereof, and selecting for plants having increased yield or growth on a nutrient deficient substrate.

Yang, Zhenbiao; Karr, Stephen

2014-02-11T23:59:59.000Z

139

NMR Studies of Texture in the B-like Phase of 3He in Aerogel  

SciTech Connect (OSTI)

Continuous wave NMR experiments have been performed in the B-like phase of 3He in a 98% open aerogel. The results allow us to get information about the texture of the 3He order parameter inside the aerogel. We conclude that in the B-like phase the boundary between the bulk 3He and the aerogel orients the vector of orbital anisotropy (L) parallel to it. Two stable textures and textural transition between them were observed in our sample.

Dmitriev, V. V.; Zavjalov, V. V.; Zmeev, D. E. [Kapitza Institute for Physical Problems, 2 Kosygina Str., Moscow 119334 (Russian Federation); Mulders, N. [Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)

2006-09-07T23:59:59.000Z

140

High resolution n = 3 to n = 2 spectra of neon-like silver  

SciTech Connect (OSTI)

Spectra of the n = 3 to n = 2 transitions in neon-like silver emitted from the Princeton Large Torus have been recorded with a high-resolution Bragg-crystal spectrometer. The measurements cover the wavelength region 3.3 to 4.1 A and include the forbidden 3p ..-->.. 2p electric quadrupole lines. Transitions in the adjacent sodium-like, and aluminum-like charge states of silver have also been observed and identified. The Ly-..cap alpha.. spectra of hydrogen-like argon and iron, the K..cap alpha.. spectra of helium-like argon, potassium, manganese, and iron, and the K..beta.. spectrum of helium-like argon fall in the same wavelength region in first or second order and have been measured concurrently. These spectra provide a coherent set of wavelength reference data obtained with the same spectrometer and from the same tokamak. This set is used as a basis to compare wavelength predictions for one- and two-electron systems to each other and to determine the transition energies of the silver lines with great accuracy.

Beiersdorfer, P.; Bitter, M.; von Goeler, S.; Cohen, S.; Hill, K.W.; Timberlake, J.; Walling, R.S.; Chen, M.H.; Hagelstein, P.L.; Scofield, J.H.

1986-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" 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

Studies of Intermittency-like Phenomena in Plasma turbulence at IPR  

SciTech Connect (OSTI)

The observation of intermittency in the turbulent scrape-off layer plasma of ADITYA tokamak was first reported about one and a half decade ago. In the last decade or so, several aspects of intermittency-like phenomena have been observed on tokamaks and other fusion devices throughout the world. A review of the research carried out at the Institute for Plasma Research (IPR) is presented, which closely follow the research trend on intermittency-like phenomena in plasmas worldwide. We also present our analysis of particle flux data in order to test the recently proposed fluctuation theorem, which states that the probability of 'entropy consuming' flux events falls off exponentially with the averaging time. This theorem, proposed in the context of small systems, is applied to macroscopic system like tokamak edge plasma by invoking an 'effective temperature' of the bath of drift waves from which, plasma objects take energy and carry out work of transporting matter

Jha, R.; Das, A.; Bisai, N.; Kaw, P. [Institute for Plasma Research, Bhat, Near Indira Bridge, Gandhinagar-382428 (India)

2010-11-23T23:59:59.000Z

142

Yes, I would like to sign up for Finance Committee on: _____/_____/2014 (Please print clearly and legibly)  

E-Print Network [OSTI]

Yes, I would like to sign up for Finance Committee on: _____/_____/2014 (Please print clearly Name from AICA Leadership/Advisor Yes, I would like to sign up for Finance Committee on

de Lijser, Peter

143

High Resolution Near-Infrared Spectroscopy of FUors and FUor-like stars  

E-Print Network [OSTI]

We present new high resolution (R=18,000) near-infrared spectroscopic observations of a sample of classical FU Orionis stars (FUors) and other young stars with FUor characteristics that are sources of Herbig-Haro flows. Spectra are presented for the region 2.203 - 2.236 microns which is rich in absorption lines sensitive to both effective temperatures and surface gravities of stars. Both FUors and FUor-like stars show numerous broad and weak unidentified spectral features in this region. Spectra of the 2.280 - 2.300 micron region are also presented, with the 2.2935 micron v=2-0 CO absorption bandhead being clearly the strongest feature seen in the spectra all FUors and Fuor-like stars. A cross-correlation analysis shows that FUor and FUor-like spectra in the 2.203 - 2.236 micron region are not consistent with late-type dwarfs, giants, nor embedded protostars. The cross-correlations also show that the observed FUor-like Herbig-Haro energy sources have spectra that are substantively similar to those of FUors. Both object groups also have similar near-infrared colors. The large line widths and double-peaked nature of the spectra of the FUor-like stars are consistent with the established accretion disk model for FUors, also consistent with their near-infrared colors. It appears that young stars with FUor-like characteristics may be more common than projected from the relatively few known classical FUors.

Tom Greene; Colin Aspin; Bo Reipurth

2008-01-27T23:59:59.000Z

144

Analysis of Rotating Collectors from the Private Region of JET with Carbon Wall and Metallic ITER-Like Wall  

E-Print Network [OSTI]

Analysis of Rotating Collectors from the Private Region of JET with Carbon Wall and Metallic ITER-Like Wall

145

Phantom-like behavior of a DGP-inspired Scalar-Gauss-Bonnet gravity  

SciTech Connect (OSTI)

We study the phantom-like behavior of a DGP-inspired braneworld scenario where curvature correction on the brane is taken into account. We include a possible modification of the induced gravity on the brane by incorporating higher order curvature terms of Gauss-Bonnet type. We investigate the cosmological implications of the model and we show that the normal branch of the scenario self-accelerates in this modified scenario without introducing any dark energy component. Also, a phantom-like behavior can be realized in this model without introducing any phantom field that suffers from serious difficulties such as violation of the null energy condition.

Nozari, Kourosh; Azizi, Tahereh [Department of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-95447, Babolsar (Iran, Islamic Republic of); Setare, M.R., E-mail: knozari@umz.ac.ir, E-mail: t.azizi@umz.ac.ir, E-mail: rezakord@ipm.ir [Faculty of Science, Department of Physics, University of Kurdistan, Pasdaran Ave., Sanandaj (Iran, Islamic Republic of)

2009-10-01T23:59:59.000Z

146

Self-oscillation in spin torque oscillator stabilized by field-like torque  

SciTech Connect (OSTI)

The effect of the field-like torque on the self-oscillation of the magnetization in spin torque oscillator with a perpendicularly magnetized free layer was studied theoretically. A stable self-oscillation at zero field is excited for negative ? while the magnetization dynamics stops for ??=?0 or ??>?0, where ? is the ratio between the spin torque and the field-like torque. The reason why only the negative ? induces the self-oscillation was explained from the view point of the energy balance between the spin torque and the damping. The oscillation power and frequency for various ? were also studied by numerical simulation.

Taniguchi, Tomohiro; Tsunegi, Sumito; Kubota, Hitoshi; Imamura, Hiroshi [National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba 305-8568 (Japan)

2014-04-14T23:59:59.000Z

147

Characterization of a NifS-Like Chloroplast Protein from Arabidopsis. Implications for Its Role in Sulfur and  

E-Print Network [OSTI]

Characterization of a NifS-Like Chloroplast Protein from Arabidopsis. Implications for Its Role 611­0011, Japan (S.-I.K., H.M., N.E., T.K.) NifS-like proteins catalyze the formation of elemental and characterize chloroplast NifS-like proteins. Using seleno-Cys as a substrate, it was found that 25% to 30

148

Coding Theorems for "Turbo-Like" Codes Dariush Divsalar, Hui Jin, and Robert J. McEliece  

E-Print Network [OSTI]

Coding Theorems for "Turbo-Like" Codes Dariush Divsalar, Hui Jin, and Robert J. McEliece Jet call these systems "turbo-like" codes and they include as special cases both the classical turbo codes for turbo-like codes. 1. Introduction. The 1993 discovery of turbo codes by Berrou, Glavieux

Abu-Mostafa, Yaser S.

149

Correlations between dioxin-like and indicators PCBs: potential consequences for2 environmental studies involving fish or sediment3  

E-Print Network [OSTI]

1 1 Correlations between dioxin-like and indicators PCBs: potential consequences for2 environmental.06.016 #12;2 19 Abstract20 Among the numerous PCB congeners, most of the dioxin-like PCBs (DL-PCBs) need fish sets. A27 similar correlation was observed in sediments. Non dioxin-like PCBs elicit various

Paris-Sud XI, Université de

150

Leader/return-stroke-like processes in the initial stage of rocket-triggered lightning  

E-Print Network [OSTI]

Leader/return-stroke-like processes in the initial stage of rocket-triggered lightning R. C. Olsen, the process of current cutoff and reestablishment during the initial stage is similar to a leader/return-stroke) than those in a triggered or natural lightning subsequent stroke (10­15 kA). The events were separated

Florida, University of

151

Poisson-Nernst-Planck systems for narrow tubular-like membrane and Bixiang Wang  

E-Print Network [OSTI]

membrane channels, transport of holes and electrons in semiconductors (see, e.g., [1, 2, 24, 4, 6, 7, 8, 17, 25]). In the context of ion flow through membrane channels, it is physicallyPoisson-Nernst-Planck systems for narrow tubular-like membrane channels Weishi Liu and Bixiang Wang

Liu, Weishi

152

Advances in PSII Deposited Diamond-Like Carbon Coatings for Use as a Corrosion Barrier  

E-Print Network [OSTI]

Advances in PSII Deposited Diamond-Like Carbon Coatings for Use as a Corrosion Barrier R. S to improve corrosion resistance, however, the necessary organometallics needed to implant these materials to produce an adherent, hard, wear and, corrosion-resistant coating plays a vital role. These applications

153

ENHANCEMENT OF SUPERCONDUCTING Tc IN Pd-H LIKE COMPOUNDS BY OPTICAL PHONONS  

E-Print Network [OSTI]

1227 ENHANCEMENT OF SUPERCONDUCTING Tc IN Pd-H LIKE COMPOUNDS BY OPTICAL PHONONS J. P. BURGER and D.450 1. Introduction. - The high superconducting tran- sition temperatures recently observed in Pd [1 interaction inhibiting superconductivity in pure Pd. As the density of states in Pd-H is rather similar [5

Boyer, Edmond

154

Tycho Brahe didn't like to talk about his data. Throughout his life, he kept  

E-Print Network [OSTI]

Tycho Brahe didn't like to talk about his data. Throughout his life, he kept his meticulously, in particular) Johannes Kepler. Only after Tycho's death in 1601 did Kepler gain full access to the data historical characters including Isaac Newton, if not Tycho or Kepler), and solving Sudoku puzzles. In fact

Loss, Daniel

155

Adding an energy-like conservation law to the leapfrog integrator  

E-Print Network [OSTI]

The leapfrog integrator is widely used because of its excellent stability in molecular dynamics simulation. This is recognized as being due to the existence of a discrete variational structure of the equations. We introduce a modified leapfrog method which includes an additional energy-like conservation law by embedding a molecular dynamics simulation within a larger dynamical system.

A. C. Maggs

2013-01-09T23:59:59.000Z

156

Deriving Bearing Measurements from Video Images using Haar-like Features for Vehicle-to-  

E-Print Network [OSTI]

cost of the adopted sensors prevents them from being common in vehicles. As a result, current studiesDeriving Bearing Measurements from Video Images using Haar-like Features for Vehicle-to- Vehicle of Geomatics Engineering University of Calgary BIOGRAPHY Elmira Amirloo Abolfathi is an M.Sc student

Calgary, University of

157

State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline System, New Study Says  

Broader source: Energy.gov [DOE]

A private sector model with a state rather than Federal-based regulatory framework is the approach that will "most likely result in a robust CO2 pipeline system" in the United States, according to a new report developed with funding from the U.S. Department of Energys National Energy Technology Laboratory.

158

Fullerene-like models for microporous carbon Peter J. F. Harris  

E-Print Network [OSTI]

REVIEW Fullerene-like models for microporous carbon Peter J. F. Harris Received: 8 June 2012 with Franklin's original models, which were based on cross-linked graphitic P. J. F. Harris (&) Centre, UK e-mail: p.j.f.harris@reading.ac.uk 123 J Mater Sci DOI 10.1007/s10853-012-6788-1 Author's personal

Harris, Peter J F

159

proteinsSTRUCTURE O FUNCTION O BIOINFORMATICS STITCHER: Dynamic assembly of likely  

E-Print Network [OSTI]

the right conditions, a great many, perhaps most, proteins have the potential to form amyloids. The tendency. In addition, significant conformational heterogeneity is known or suspected to exist in many amyloid fibrilsproteinsSTRUCTURE O FUNCTION O BIOINFORMATICS STITCHER: Dynamic assembly of likely amyloid

Gifford, David K.

160

Oligomeric Assembly of Native-like Precursors Precedes Amyloid Formation by -2 Microglobulin  

E-Print Network [OSTI]

intermediates suggest that this protein forms fibrils by structural domain swapping. Amyloid fibers are highlyOligomeric Assembly of Native-like Precursors Precedes Amyloid Formation by -2 MicroglobulinVed January 29, 2004; ReVised Manuscript ReceiVed March 19, 2004 ABSTRACT: The deposition of -2-microglobulin

Miranker, Andrew

Note: This page contains sample records for the topic "likes picasolar wholly" 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

Prefix-like Complexities of Finite and Infinite Sequences on Generalized Turing Machines  

E-Print Network [OSTI]

Prefix-like Complexities of Finite and Infinite Sequences on Generalized Turing Machines Alexey of Finite and Infinite Sequences on Generalized Turing Machines Alexey Chernov J¨urgen Schmidhuber March 2005 Abstract Generalized Turing machines (GTMs) are a variant of non-halting Turing machines

Schmidhuber, Juergen

162

Phytoplankton consists of one-celled marine and freshwater microalgae and other plant-like organisms.  

E-Print Network [OSTI]

Phytoplankton consists of one-celled marine and freshwater microalgae and other plant-like organisms. They are used in the production of pharmaceuticals, diet supplements, pigments, and biofuels, taking up carbon dioxide and nutrients from the water and using light as an energy source. The microalgae

Florida, University of

163

ITER-like wall sliced beryllium tiles The JET Enhanced Performance 2 (EP2) shutdown  

E-Print Network [OSTI]

ITER-like wall sliced beryllium tiles Background The JET Enhanced Performance 2 (EP2) shutdown and remote handling equipment. JET remote handling systems #12;Outcome The EP2 shutdown was successful of the remote handling system are compatible with the required component manipulation. Pre EP2 shutdown Mid

164

Improved Confinement in JET High {beta} Plasmas with an ITER-Like Wall  

E-Print Network [OSTI]

The replacement of the JET carbon wall (C-wall) by a Be/W ITER-like wall (ILW) has affected the plasma energy confinement. To investigate this, experiments have been performed with both the C-wall and ILW to vary the heating power over a wide range for plasmas with different shapes.

Challis, C D; Beurskens, M; Buratti, P; Delabie, E; Drewelow, P; Frassinetti, L; Giroud, C; Hawkes, N; Hobirk, J; Joffrin, E; Keeling, D; King, D B; Maggi, C F; Mailloux, J; Marchetto, C; McDonald, D; Nunes, I; Pucella, G; Saarelma, S; Simpson, J

2015-01-01T23:59:59.000Z

165

Viability Studies of Biofuels Though biofuels (like ethanol) promise renewable "green" energy, these  

E-Print Network [OSTI]

Viability Studies of Biofuels Though biofuels (like ethanol) promise renewable "green" energy cannot possibly meet U.S. energy demands, and current methods of biofuel production often consume as much energy as they produce. If biofuels are to be viable long-term energy solutions, we need new sources

Hill, Wendell T.

166

Kalinella bambusicola gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a novel coccoid Chlorella-like subaerial alga  

E-Print Network [OSTI]

-like subaerial alga from Southeast Asiapre_534 159..169 Jirí Neustupa,* Yvonne Nemcová, Marek Eliás and Pavel, Czech Republic SUMMARY The traditional green algal genus Chlorella, which com- prised coccoid algae lineage of the trebouxiophycean Watanabea clade, dissimilar from other members of this group. The alga has

167

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES  

E-Print Network [OSTI]

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES burdens of wind turbines. To detect damage of rotor blades, several research projects focus on an acoustic, rotor blade, wind turbine INTRODUCTION There are several publications of non destructive damage

Boyer, Edmond

168

Inorganica Chimica Acta 332 (2002) 127134 Bimetallic sheet and 3D threefold interpenetrating diamond-like  

E-Print Network [OSTI]

interpenetrating dia- mond [13], a-polonium networks [16,17], other compli- cated 3D networks [18,22]. It has been found that the network topology of anionic coor- dination polymers like M(dca)3 - and M(dca)4 on that heterometallic networks can be built by further coordination bonding of the anionic dca coordi- nation polymer

Gao, Song

2002-01-01T23:59:59.000Z

169

Jet-like circulations occur in the `simple' geometries of gas planets and Earth's  

E-Print Network [OSTI]

#12;Jet-like circulations occur in the `simple' geometries of gas planets and Earth's liquid stratification and boundary topography are both essential elements in structuring energy-containing eddies-slope waveguide) in a model basin, here driven by a compact cooling region at high latitude (Hallberg & Rhines JPO

170

CAD-HOC: A CAD Like Tool For Generating Mobility Benchmarks In Ad-Hoc Networks  

E-Print Network [OSTI]

CAD-HOC: A CAD Like Tool For Generating Mobility Benchmarks In Ad-Hoc Networks Subodh Shah , Edwin of using unrealistic mobility scenarios for simulation of ad-hoc routing protocols. We present CAD-HOC, a cousin tool to Network Simulator (ns), which allows ad-hoc networking experimentation to be performed

Helal, Abdelsalam

171

On models for viscoelastic fluid-like materials that are mechanically incompressible and  

E-Print Network [OSTI]

On models for viscoelastic fluid-like materials that are mechanically incompressible and thermally of the full Navier­Stokes­Fourier system. J. Math. Fluid Mech., 11:274­302, 2009 Mechanically incompressible;Viscoelastic fluids ­ Maxwell model F l lsld µm m Mechanical analogue: Spring ­ energy storage. Dashpot

Cerveny, Vlastislav

172

Introduction The use of ethanol as a gasoline additive is likely to  

E-Print Network [OSTI]

Introduction The use of ethanol as a gasoline additive is likely to increase in the near future will also lead to additional ethanol use. There- fore, it is important to understand how ethanol affects that the presence of ethanol could have undesirable effects on the biodegradation of BTEX (i.e., benzene, toluene

Alvarez, Pedro J.

173

Biologically-Inspired Adaptive Pectoral-Like Fin Control System For CFD Parameterized AUV  

E-Print Network [OSTI]

on the normalized gradient scheme. In the closed-loop system, time-varying yaw an- gle reference trajectoriesBiologically-Inspired Adaptive Pectoral-Like Fin Control System For CFD Parameterized AUV Mugdha S fin control, Adaptive control, Yaw plane control. Abstract- This paper treats the question of adaptive

Mittal, Rajat

174

Excitation energies and transition rates in the 3d2 states of Ca-like ions  

E-Print Network [OSTI]

Excitation energies and transition rates in the 3d2 states of Ca-like ions U. I. Safronova,1 W. R October 2000; published 14 February 2001 Energies, transition probabilities, and lifetimes are calculated matrix elements. The resulting transition energies and lifetimes are compared with experimental values

Johnson, Walter R.

175

Synthesis of graphene-like nanosheets and their hydrogen adsorption capacity  

E-Print Network [OSTI]

synthesized by the reduction of a colloidal suspen- sion of exfoliated graphite oxide. The morphology exfoliated natural graphite oxide (GO). After reduction this material consists of agglomerated and wrin- kled-like nanosheets by chemically reducing exfoliated graphite oxide, and investigated the hydrogen adsorption

176

Free-Riding on BitTorrent-Like Peer-to-Peer File Sharing Systems: Modeling  

E-Print Network [OSTI]

Free-Riding on BitTorrent-Like Peer-to-Peer File Sharing Systems: Modeling Analysis and Improvement contribution and prevent free-riding. However, BitTorrent's ability to prevent free-riding needs further study. In this paper, we present a fluid model with two different classes of peers to capture the effect of free

Wu, Jie

177

Are oxidized shergottite-like basalts an alternative to ``andesite'' on Victoria E. Hamilton  

E-Print Network [OSTI]

Are oxidized shergottite-like basalts an alternative to ``andesite'' on Mars? Victoria E. Hamilton; 6225 Planetology: Solar System Objects: Mars. Citation: Hamilton, V. E., and M. E. Minitti meteorites [Hamilton et al., 1997]. The mineralogies of the Martian TIR spectra were inter- preted

Hamilton, Victoria E.

178

Design Technical Brief A Geometric Path Planner for Car-like  

E-Print Network [OSTI]

Journal of Mechanical Design Technical Brief A Geometric Path Planner for Car-like Robots Shiang a refined slabbing method, originally used for free-flying robots, for finding efficient paths for nonholo- nomic robots. Our method takes kinematic constraints and rever- sal maneuvers into account. We create

Deng, Jiansong

179

NONLINEAR TRACKING CONTROL OF A CAR-LIKE MOBILE ROBOT VIA DYNAMIC FEEDBACK LINEARIZATION  

E-Print Network [OSTI]

NONLINEAR TRACKING CONTROL OF A CAR-LIKE MOBILE ROBOT VIA DYNAMIC FEEDBACK LINEARIZATION Erfu Yang Tokyo Institute of Technology, Tokyo 152-8552, Japan Keywords: Nonlinear tracking control, Mobile robot behaviour for mobile robots. This paper addresses the nonlinear trajectory tracking control problem

Hu, Huosheng

180

Self-assembly of oxide-supported metal clusters into ring-like Kristoffer Meinander,  

E-Print Network [OSTI]

Self-assembly of oxide-supported metal clusters into ring-like structures Kristoffer Meinander, Kai, Finland Abstract Self-assembly is a phenomenon that continuously occurs at the nanoscale, as atoms form of these organized systems, but the precise mechanism, with which this self-assembly progresses, is seldom known

Nordlund, Kai

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


181

White Space Networking with Wi-Fi like Connectivity Paramvir Bahl  

E-Print Network [OSTI]

White Space Networking with Wi-Fi like Connectivity Paramvir Bahl , Ranveer Chandra , Thomas {bahl, ranveer, moscitho}@microsoft.com {rohan, mdw}@eecs.harvard.edu ABSTRACT Networking over UHF white for implementing a wireless network in this band. We present the design and imple- mentation of WhiteFi, the first

Badrinath, B. R.

182

Learn What a Heart Attack Feels Like--It Could Save Your Life.  

E-Print Network [OSTI]

Learn What a Heart Attack Feels Like-- It Could Save Your Life. This fact sheet tells you about heart attack signs. It also tells you what to do if you are having any of these signs. Take these steps. They could save your life. 1. Know the signs of a heart attack. 2. Understand that heart attacks are not all

Bandettini, Peter A.

183

Estimates for temperature in projectile like fragment in geometric and transport models  

E-Print Network [OSTI]

Projectile like fragments emerging from heavy ion collision have an excitation energy which is often labeled by a temperature. This temperature was recently calculated using a geometric model. We expand the geometric model to include also dynamic effects using a transport model. The temperatures so deduced agree quite well with values of temperature needed to fit experimental data.

Mallik, S; Chaudhuri, G

2013-01-01T23:59:59.000Z

184

Mar 24th 2011 | from the print edition 0 40Like Battery technology  

E-Print Network [OSTI]

by electrodeposition--like nickel-plating a piece of steel. After that, the material is heated, to melt the polystyrene, nickel-metal hydride batteries were preferred for many applications. Even now, they are cheaper than, indeed, opalescent. The next stage is to fill the gaps between the spheres with nickel. This is done

Braun, Paul

185

The Minimum Distance of Turbo-Like Codes Louay Bazzi, Mohammad Mahdian, Daniel A. Spielman  

E-Print Network [OSTI]

1 The Minimum Distance of Turbo-Like Codes Louay Bazzi, Mohammad Mahdian, Daniel A. Spielman Abstract--Worst-case upper bounds are derived on the minimum distance of parallel concatenated Turbo codes that parallel-concatenated Turbo codes and repeat-convolute codes with sub-linear memory are asymptotically bad

Spielman, Daniel A.

186

High-Performance Distributed Solar Computing (?) ---Towards a Grid that Computes like Trees---  

E-Print Network [OSTI]

High-Performance Distributed Solar Computing (?) --- Towards a Grid that Computes like Trees--- (Satoshi Matsuoka) matsu@is.titech.ac.jp Abstract Power-heat dissipation as well as the associated CO2 grid, and involve very little effect or merit from grid computing, we actually claim that grids

187

What is a seismic reflector like? Nathalie Favretto-Cristini1  

E-Print Network [OSTI]

What is a seismic reflector like? Nathalie Favretto-Cristini1 , Paul Cristini1 , and Eric de of reflectors from a seismic viewpoint. This region is repre- sented by a volume of integration of medium and syncline type. The maximum vertical extent might be larger than the seismic wavelengths for subcritical

Boyer, Edmond

188

Assessment of Dioxin-Like Soil Contamination in Mexico by Enzyme-Linked Immunosorbent Assay  

E-Print Network [OSTI]

Assessment of Dioxin-Like Soil Contamination in Mexico by Enzyme-Linked Immunosorbent Assay E describe the results of a pre- liminary soil assessment program for the detection of dioxins at different sources of dioxins: Anaversa and Tekchem industrial areas where organochlorine pesticides were

Hammock, Bruce D.

189

ACCELERATED COMMUNICATION Aspects of Dioxin Toxicity Are Mediated by Interleukin 1-Like  

E-Print Network [OSTI]

ACCELERATED COMMUNICATION Aspects of Dioxin Toxicity Are Mediated by Interleukin 1-Like Cytokines, 2005 ABSTRACT Exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (dioxin) re- sults in a broad spectrum of toxic effects. Most, if not all, of these responses are dependent upon the binding of dioxin to the aryl

Bradfield, Christopher A.

190

yale school of forestry & environmental studies What Do Healthy Rural Economies Look Like  

E-Print Network [OSTI]

yale school of forestry & environmental studies What Do Healthy Rural Economies Look Like in the U at the Yale School of Forestry & Environmental Studies Publication Series website: www.yale.edu/environment/publications © 2013 Yale School of Forestry & Environmental Studies. This report may be reproduced without written

Haller, Gary L.

191

Parallel Scan-Like Testing and Fault Diagnosis Techniques for Digital Microfluidic Biochips*  

E-Print Network [OSTI]

Parallel Scan-Like Testing and Fault Diagnosis Techniques for Digital Microfluidic Biochips* Tao Xu, USA {tx, krish}@ee.duke.edu Abstract Dependability is an important attribute for microfluidic biochips diagnosis method based on test outcomes, for droplet-based microfluidic devices. The proposed method allows

Chakrabarty, Krishnendu

192

Virtual MISO Triggers in WiFi-like Networks Oscar Bejarano and Edward W. Knightly  

E-Print Network [OSTI]

Virtual MISO Triggers in WiFi-like Networks Oscar Bejarano and Edward W. Knightly ECE Department, Rice University, Houston, TX 77005 Technical Report Abstract--Virtual Multiple-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO

Knightly, Edward W.

193

Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano and Edward W. Knightly  

E-Print Network [OSTI]

Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano and Edward W. Knightly ECE Department-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO has the potential to vastly improve wireless link reliability and bit error rates

Knightly, Edward W.

194

Neurocomputing 70 (2007) 26922700 Inter-spike-intervals analysis of AER Poisson-like generator hardware  

E-Print Network [OSTI]

Neurocomputing 70 (2007) 2692­2700 Inter-spike-intervals analysis of AER Poisson-like generator Sevilla, Spain Available online 10 May 2007 Abstract Address­Event­Representation (AER) is a communication). In developing AER-based systems it is very convenient to have available some means of generating AER streams

Barranco, Bernabe Linares

195

Potential Flow Model of a Vortex Street Near a Fish-like Body  

E-Print Network [OSTI]

Potential Flow Model of a Vortex Street Near a Fish-like Body Joshua Brulé, University of Maryland to inviscid, irrotational solutions of Navier-Stokes · Vortex potential: "A model of the lateral line of fish for vortex sensing." Ren Z, Mohseni K. 2012 #12;Vortex near a (circular) fish · (Insert your own spherical

Anlage, Steven

196

2006 Nature Publishing Group A Devonian tetrapod-like fish and the  

E-Print Network [OSTI]

© 2006 Nature Publishing Group A Devonian tetrapod-like fish and the evolution of the tetrapod body vertebrates (tetrapods) to lobe-finned fish (sarcopterygians) is well established, but the origin of major changes. Here we report the discovery of a well-preserved species of fossil sarcopterygian fish from

Bechtold, Jill

197

ENGINEERING & SCIENCE fall 201014 Left: Looking like a knight in a chain-mail hood,  

E-Print Network [OSTI]

ENGINEERING & SCIENCE fall 201014 Left: Looking like a knight in a chain-mail hood, Koch dons not with a penchant for horror cinema, but with a toothache. "I was teaching a course at the Marine Biological processes is beginning to throw light on how the conscious mind works. #12;fall 2010 ENGINEERING & SCIENCE

198

A badger-face-like color variant in Texel and in Dutch sheep in the Netherlands  

E-Print Network [OSTI]

A badger-face-like color variant in Texel and in Dutch sheep in the Netherlands P HOOGSCHAGEN S and Daivying Bezuidenhoutse!eg !3 The Hague The Netherlands (**) Agvicultuval Research Institute, Keldnaholt the Netherlands. Phenotypically this variant localy called « blue » is very close from the well known badger

Paris-Sud XI, Université de

199

DEVELOPMENT OF FISH-LIKE SWIMMING BEHAVIOURS FOR AN AUTONOMOUS ROBOTIC FISH  

E-Print Network [OSTI]

DEVELOPMENT OF FISH-LIKE SWIMMING BEHAVIOURS FOR AN AUTONOMOUS ROBOTIC FISH Jindong Liu, Ian Dukes CO4 3SQ, United Kingdom Email: {jliua, idukes, rrknig, hhu}@essex.ac.uk Keywords: Robotic fish the fish movement into several basic behaviours, namely straight cruise, cruise in turn and sharp turn

Hu, Huosheng

200

`LOW TEMPERATURE FOMBLIN' COATED ACCORDION-LIKE UCN STORAGE SYSTEM FOR NEUTRON LIFETIME EXPERIMENT  

E-Print Network [OSTI]

Island, Kingston, RI, USA; 3 Joint Institute for Nuclear Research, Dubna, Russia; 4 Institut Laue Temperature Fomblin', has been tested as a wall coating in an ultracold neutron (UCN) storage experiment using to n is made more reliable by the novel use of an accordion-like storage vessel. In this system

Steyerl, Albert

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


201

Estimated number of women likely to benefit from bone mineral density measurement in France  

E-Print Network [OSTI]

; Menopause Introduction The prevalence of osteoporosis is rising, most notably in postmenopausal women years of age with risk factors for osteoporosis likely to lead to bone mineral density measurement, an investigation reimbursed by the French national health insurance system in patients at risk for osteoporosis

Paris-Sud XI, Universit de

202

The Cotton Centromere Contains a Ty3-gypsy-like LTR Retroelement  

E-Print Network [OSTI]

The Cotton Centromere Contains a Ty3-gypsy-like LTR Retroelement Song Luo1 , Jennifer Mach1-term aim of understanding centromere structure and function, we set out to identify cotton centromere sequences. To isolate centromere-associated sequences from cotton, (Gossypium hirsutum) we surveyed tandem

Copenhaver, Gregory P.

203

Distributed 3D Navigation and Collision Avoidance for Nonholonomic Aircraft-like Vehicles  

E-Print Network [OSTI]

Vehicles (AUVs) and Unmanned Aerial Vehicles (UAVs), or automated Air Traffic Control (ATC) in general, Massachusetts Institute of Technology, Cambridge, MA, U.S.A. ddimar@mit.edu underwater vehicles, the aboveDistributed 3D Navigation and Collision Avoidance for Nonholonomic Aircraft-like Vehicles Giannis P

Dimarogonas, Dimos

204

On The Method of Precise Calculations Of Energy Levels of Hydrogen-like Atoms  

E-Print Network [OSTI]

We describe a method for deriving logarithmic corrections in the mass ratio to the S-level of a hydrogen-like atom. With this method, a number of new corrections of this type are calculated analitically for the first time.

N. A. Boikova; Y. N. Tyukhtyaev; R. N. Faustov

2003-11-22T23:59:59.000Z

205

LIKELY MEMBERS OF THE {beta} PICTORIS AND AB DORADUS MOVING GROUPS IN THE NORTH  

SciTech Connect (OSTI)

We present first results from follow-up of targets in the northern hemisphere {beta} Pictoris and AB Doradus moving group candidate list of Schlieder et al. We obtained high-resolution, near-infrared spectra of 27 candidate members to measure their radial velocities and confirm consistent group kinematics. We identify 15 candidates with consistent predicted and measured radial velocities, perform analyses of their six-dimensional (UVWXYZ) Galactic kinematics, and compare to known group member distributions. Based on these analyses, we propose that seven {beta} Pic and eight AB Dor candidates are likely new group members. Four of the likely new {beta} Pic stars are binaries, one a double-lined spectroscopic system. Three of the proposed AB Dor stars are binaries. Counting all binary components, we propose 22 likely members of these young, moving groups. The majority of the proposed members are M2 to M5 dwarfs, the earliest being of type K2. We also present preliminary parameters for the two new spectroscopic binaries identified in the data, the proposed {beta} Pic member and a rejected {beta} Pic candidate. Our candidate selection and follow-up has thus far identified more than 40 low-mass, likely members of these two moving groups. These stars provide a new sample of nearby, young targets for studies of local star formation, disks and exoplanets via direct imaging, and astrophysics in the low-mass regime.

Schlieder, Joshua E. [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Lepine, Sebastien [Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024 (United States); Simon, Michal, E-mail: schlieder@mpia-hd.mpg.de, E-mail: michal.simon@stonybrook.edu, E-mail: lepine@amnh.org [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (United States)

2012-10-01T23:59:59.000Z

206

Arctic sea ice velocity field: General circulation and turbulent-like fluctuations  

E-Print Network [OSTI]

Arctic sea ice velocity field: General circulation and turbulent-like fluctuations P. Rampal,1,2 J the Arctic sea ice velocity field as the superposition of a mean field and fluctuations. We study how subtracting the mean field, are analyzed in terms of diffusion properties. Although the Arctic sea ice cover

Boyer, Edmond

207

A Viterbi-like algorithm and EM learning for statistical abduction Taisuke SATO Yoshitaka KAMEYA  

E-Print Network [OSTI]

A Viterbi-like algorithm and EM learning for statistical abduction Taisuke SATO Yoshitaka KAMEYA@mi.cs.titech.ac.jp Abstract We propose statistical abduction as a #12;rst- order logical framework for representing and learning probabilistic knowledge. It com- bines logical abduction with a parameter- ized distribution over

Sato, Taisuke

208

CARBON SEQUESTRATION IN ARABLE SOILS IS LIKELY TO INCREASE NITROUS OXIDE EMISSIONS, OFFSETTING  

E-Print Network [OSTI]

CARBON SEQUESTRATION IN ARABLE SOILS IS LIKELY TO INCREASE NITROUS OXIDE EMISSIONS, OFFSETTING in strategies for climate protection. 1. Introduction Carbon sequestration has been highlighted recently concentration of carbon dioxide (CO2) in the atmo- sphere include sequestering carbon (C) in soils

209

Using Groupings of Static Analysis Alerts to Identify Files Likely to Contain Field Failures  

E-Print Network [OSTI]

. INTRODUCTION Static analysis is the process of evaluating a system or component based on its form, structure of static analysis alerts reported by the static analyzer could overwhelm the development team. CertainUsing Groupings of Static Analysis Alerts to Identify Files Likely to Contain Field Failures Mark S

Sherriff, Mark S.

210

Shock-like structures in the tropical cyclone boundary layer Gabriel J. Williams,1  

E-Print Network [OSTI]

the horizontal and vertical velocity data shown by the blue curves in Figure 1. The extreme horizontal wind m in the northeast sector. Since these extreme structures in the boundary layer wind field occur produces a shock-like structure in the radial wind, i.e., near the radius of maximum tangential wind

Schubert, Wayne H.

211

LPM Interference and Cherenkov-like Gluon Bremsstrahlung in DenseMatter  

SciTech Connect (OSTI)

Gluon bremsstrahlung induced by multiple parton scattering in a finite dense medium has a unique angular distribution with respect to the initial parton direction. A dead-cone structure with an opening angle; theta2{sub 0}; approx 2(1-z)/(zLE) for gluons with fractional energy z arises from the Landau-Pomeran chuck-Migdal (LPM) interference. In a medium where the gluon's dielectric constant is; epsilon>1, the LPM interference pattern is shown to become Cherenkov-like with an increased opening angle determined by the dielectric constant$/cos2/theta{sub c}=z+(1-z)//epsilon$. For a large dielectric constant/epsilon; gg 1+2/z2LE, the corresponding total radiative parton energy loss is about twice that from normal gluon bremsstrahlung. Implications of this Cherenkov-like gluon bremsstrahlung to the jet correlation pattern in high-energy heavy-ion collisions is discussed.

Majumder, Abhijit; Wang, Xin-Nian

2005-07-26T23:59:59.000Z

212

A Statistic for identifying cosmic string wakes and other sheet-like structure  

E-Print Network [OSTI]

We describe an implementation of the structure functions of Babul \\& Starkman, in order to quantify the ``sheet-like'' nature of a distribution of matter. We test this statistic on a toy model describing cosmic string wakes, and show that it does a better job than other statistics which have been proposed for distinguishing non-Gaussianity in the form of sheets. We conclude that the most favoured cosmic string model is unlikely to produce a significant increase in the sheet-like nature of the matter distribution beyond that which occurs in Gaussian models (with the same power spectrum) due to the formation of Zeldovich pancakes. Although the statistic was developed in the context of cosmic string wake formation, we expect it to be useful for comparing the observed galaxy distribution with a wide range of theoretical models with different power spectra.

James Robinson; Andreas Albrecht

1996-02-26T23:59:59.000Z

213

Electron impact excitation of Be-like ions: a comparison of DARC and ICFT results  

E-Print Network [OSTI]

Emission lines of Be-like ions are frequently observed in astrophysical plasmas, and many are useful for density and temperature diagnostics. However, accurate atomic data for energy levels, radiative rates (A-values) and effective electron excitation collision strengths ($\\Upsilon$) are required for reliable plasma modelling. In general it is reasonably straightforward to calculate energy levels and A- values to a high level of accuracy. By contrast, considerable effort is required to calculate $\\Upsilon$, and hence it is not always possible to assess the accuracy of available data. Recently, two independent calculations (adopting the $R$-matrix method) but with different approaches (DARC and ICFT) have appeared for a range of Be-like ions. Therefore, in this work we compare the two sets of $\\Upsilon$, highlight the large discrepancies for a significant number of transitions and suggest possible reasons for these.

Aggarwal, K M

2015-01-01T23:59:59.000Z

214

Plasma spraying method for forming diamond and diamond-like coatings  

DOE Patents [OSTI]

A method and composition is disclosed for the deposition of a thick layer of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition including at least glassy carbon is heated in a direct current plasma arc device to a selected temperature above the softening point, in an inert atmosphere, and is propelled to quickly quenched on a selected substrate. The softened or molten composition crystallizes on the substrate to form a thick deposition layer comprising at least a diamond or diamond-like material. The selected composition includes at least glassy carbon as a primary constituent and may include at least one secondary constituent. Preferably, the secondary constituents are selected from the group consisting of at least diamond powder, boron carbide (B{sub 4}C) powder and mixtures thereof. 9 figs.

Holcombe, C.E.; Seals, R.D.; Price, R.E.

1997-06-03T23:59:59.000Z

215

Plasma spraying method for forming diamond and diamond-like coatings  

DOE Patents [OSTI]

A method and composition for the deposition of a thick layer (10) of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition (12) including at least glassy carbon is heated in a direct current plasma arc device to a selected temperature above the softening point, in an inert atmosphere, and is propelled to quickly quenched on a selected substrate (20). The softened or molten composition (18) crystallizes on the substrate (20) to form a thick deposition layer (10) comprising at least a diamond or diamond-like material. The selected composition (12) includes at least glassy carbon as a primary constituent (14) and may include at least one secondary constituent (16). Preferably, the secondary constituents (16) are selected from the group consisting of at least diamond powder, boron carbide (B.sub.4 C) powder and mixtures thereof.

Holcombe, Cressie E. (Farragut, TN); Seals, Roland D. (Oak Ridge, TN); Price, R. Eugene (Knoxville, TN)

1997-01-01T23:59:59.000Z

216

Cloning and expression of autogenes encoding RNA polymerases of T7-like bacteriophages  

DOE Patents [OSTI]

This invention relates to the cloning and expression of autogenes encoding RNA polymerases of T7 and T7-like bacteriophages, in which the RNA polymerase gene is transcribed from a promoter which is recognized by the encoded RNA polymerase. Cloning of T7 autogenes was achieved by reducing the activity of the RNA polymerase sufficiently to permit host cell growth. T7 RNA polymerase activity was controlled by combining two independent methods: lac-repression of the recombinant lac operator-T7 promoter in the autogene and inhibition of the polymerase by T7 lysozyme. Expression systems for producing the RNA polymerases of T7 and other T7-like bacteriophages, and expression systems for producing selected gene products are described, as well as other related materials and methods. 12 figs.

Studier, F.W.; Dubendorff, J.W.

1998-11-03T23:59:59.000Z

217

Cloning and expression of autogenes encoding RNA polymerases of T7-like bacteriophages  

DOE Patents [OSTI]

This invention relates to the cloning and expression of autogenes encoding RNA polymerases of T7 and T7-like bacteriophages, in which the RNA polymerase gene is transcribed from a promoter which is recognized by the encoded RNA polymerase. Cloning of T7 autogenes was achieved by reducing the activity of the RNA polymerase sufficiently to permit host cell growth. T7 RNA polymerase activity was controlled by combining two independent methods: lac-repression of the recombinant lac operator-T7 promoter in the autogene and inhibition of the polymerase by T7 lysozyme. Expression systems for producing the RNA polymerases of T7 and other T7-like bacteriophages, and expression systems for producing selected gene products are described, as well as other related materials and methods. 12 figs.

Studier, F.W.; Dubendorff, J.W.

1998-10-20T23:59:59.000Z

218

3D climate modeling of Earth-like extrasolar planets orbiting different types of host stars  

E-Print Network [OSTI]

The potential habitability of a terrestrial planet is usually defined by the possible existence of liquid water on its surface. The potential presence of liquid water depends on many factors such as, most importantly, surface temperatures. The properties of the planetary atmosphere and its interaction with the radiative energy provided by the planet's host star are thereby of decisive importance. In this study we investigate the influence of different main-sequence stars upon the climate of Earth-like extrasolar planets and their potential habitability by applying a 3D Earth climate model accounting for local and dynamical processes. The calculations have been performed for planets with Earth-like atmospheres at orbital distances where the total amount of energy received from the various host stars equals the solar constant. In contrast to previous 3D modeling studies, we include the effect of ozone radiative heating upon the vertical temperature structure of the atmospheres. The global orbital mean results o...

Godolt, M; Hamann-Reinus, A; Kitzmann, D; Kunze, M; Langematz, U; von Paris, P; Patzer, A B C; Rauer, H; Stracke, B

2015-01-01T23:59:59.000Z

219

2+1 Quantum Gravity with Barbero-Immirzi like parameter on Toric Spatial Foliation  

E-Print Network [OSTI]

We consider gravity in 2+1 space-time dimensions, with negative cosmological constant and a `Barbero-Immirzi' (B-I) like parameter, when the space-time topology is of the form $ T^2 \\times \\mathbbm{R}$. The phase space structure, both in covariant and canonical framework is analyzed. Full quantization of the theory in the 'constrain first' approach reveals a finite dimensional physical Hilbert space. An explicit construction of wave functions is presented. The dimension of the Hilbert space is found to depend on the `Barbero-Immirzi' like parameter in an interesting fashion. Comparative study of this parameter in light of some of the recent findings in literarure for similar theories is presented.

Rudranil Basu; Samir K Paul

2010-03-17T23:59:59.000Z

220

Distinguishing a SM-like MSSM Higgs boson from SM Higgs boson at muon collider  

E-Print Network [OSTI]

We explore the possibility of distinguishing the SM-like MSSM Higgs boson from the SM Higgs boson via Higgs boson pair production at future muon collider. We study the behavior of the production cross section in SM and MSSM with Higgs boson mass for various choices of MSSM parameters tan \\beta and m\\sub A. We observe that at fixed CM energy, in the SM, the total cross section increases with the increase in Higgs boson mass whereas this trend is reversed for the MSSM case. The changes that occur for the MSSM case in comparison to the SM predictions are quantified in terms of the relative percentage deviation in cross section. The observed large deviations in cross section for different choices of Higgs mass suggest that the measurements of the cross section could possibly distinguish the SM-like MSSM Higgs boson from the SM Higgs boson.

Jai Kumar Singhal; Sardar Singh; Ashok K Nagawat

2005-07-26T23:59:59.000Z

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


221

A precise asteroseismic age and radius for the evolved Sun-like star KIC 11026764  

E-Print Network [OSTI]

The primary science goal of the Kepler Mission is to provide a census of exoplanets in the solar neighborhood, including the identification and characterization of habitable Earth-like planets. The asteroseismic capabilities of the mission are being used to determine precise radii and ages for the target stars from their solar-like oscillations. Chaplin et al. (2010) published observations of three bright G-type stars, which were monitored during the first 33.5 days of science operations. One of these stars, the subgiant KIC 11026764, exhibits a characteristic pattern of oscillation frequencies suggesting that it has evolved significantly. We have derived asteroseismic estimates of the properties of KIC 11026764 from Kepler photometry combined with ground-based spectroscopic data. We present the results of detailed modeling for this star, employing a variety of independent codes and analyses that attempt to match the asteroseismic and spectroscopic constraints simultaneously. We determine both the radius and ...

Metcalfe, T S; Thompson, M J; Molenda-Zakowicz, J; Appourchaux, T; Chaplin, W J; Dogan, G; Eggenberger, P; Bedding, T R; Bruntt, H; Creevey, O L; Quirion, P -O; Stello, D; Bonanno, A; Aguirre, V Silva; Basu, S; Esch, L; Gai, N; Di Mauro, M P; Kosovichev, A G; Kitiashvili, I N; Suarez, J C; Moya, A; Piau, L; Garcia, R A; Marques, J P; Frasca, A; Biazzo, K; Sousa, S G; Dreizler, S; Bazot, M; Karoff, C; Frandsen, S; Wilson, P A; Brown, T M; Christensen-Dalsgaard, J; Gilliland, R L; Kjeldsen, H; Campante, T L; Fletcher, S T; Handberg, R; Regulo, C; Salabert, D; Schou, J; Verner, G A; Ballot, J; Broomhall, A -M; Elsworth, Y; Hekker, S; Huber, D; Mathur, S; New, R; Roxburgh, I W; Sato, K H; White, T R; Borucki, W J; Koch, D G; Jenkins, J M

2010-01-01T23:59:59.000Z

222

The excitation of solar-like oscillations in a delta Scuti star by efficient envelope convection  

E-Print Network [OSTI]

Delta Scuti (delta Sct) stars are opacity-driven pulsators with masses of 1.5-2.5M$_{\\odot}$, their pulsations resulting from the varying ionization of helium. In less massive stars such as the Sun, convection transports mass and energy through the outer 30 per cent of the star and excites a rich spectrum of resonant acoustic modes. Based on the solar example, with no firm theoretical basis, models predict that the convective envelope in delta Sct stars extends only about 1 per cent of the radius, but with sufficient energy to excite solar-like oscillations. This was not observed before the Kepler mission, so the presence of a convective envelope in the models has been questioned. Here we report the detection of solar-like oscillations in the delta Sct star HD 187547, implying that surface convection operates efficiently in stars about twice as massive as the Sun, as the ad hoc models predicted.

Antoci, V; Campante, T L; Thygesen, A O; Moya, A; Kallinger, T; Stello, D; Grigahcne, A; Kjeldsen, H; Bedding, T R; Lftinger, T; Christensen-Dalsgaard, J; Catanzaro, G; Frasca, A; De Cat, P; Uytterhoeven, K; Bruntt, H; Houdek, G; Kurtz, D W; Lenz, P; Kaiser, A; Van Cleve, J; Allen, C; Clarke, B D

2011-01-01T23:59:59.000Z

223

Thermodynamics of the Three-dimensional Black Hole with a Coulomb-like Field  

E-Print Network [OSTI]

In this paper, we study the thermodynamical properties of the (2+1)dimensional black hole with a Coulomb-like electric field and the differential form of the first law of thermodynamics is derived considering a virtual displacement of its event horizon. This approach shows that it is possible to give a thermodynamical interpretation to the field equations near the horizon. The Lambda=0 solution is studied and its interesting thermodynamical properties are commented.

Alexis Larranaga; Luz Angela Garcia

2008-11-21T23:59:59.000Z

224

Express Letter Fullerene-like carbon nanostructures in the Allende meteorite  

E-Print Network [OSTI]

Express Letter Fullerene-like carbon nanostructures in the Allende meteorite P.J.F. Harris aY *, R 0 1 2 - 8 2 1 X ( 0 0 ) 0 0 2 7 7 - 6 * Corresponding author. E-mail: p.j.f.harris@rdg.ac.uk Earth. Higher magni¢cation image showing structure of carbon. P.J.F. Harris et al. / Earth and Planetary Science

Harris, Peter J F

225

The Sun-like activity of the solar twin 18 Scorpii  

E-Print Network [OSTI]

We present the results of 10 yr of complementary spectroscopic and photometric observations of the solar twin 18 Scorpii. We show that over the course of its ~7 year chromospheric activity cycle, 18 Sco's brightness varies in the same manner as the Sun's and with a likely brightness variation of 0.09%, similar to the 0.1% decadal variation in the total solar irradiance.

Jeffrey C. Hall; Gregory W. Henry; G. Wesley Lockwood

2007-03-16T23:59:59.000Z

226

Horizon Mechanics and Asymptotic Symmetries with a Immirzi-like Parameter in 2+1 Dimensions  

E-Print Network [OSTI]

Starting with a generalized theory of 2+1 gravity containing an Immirzi like parameter, we derive the modified laws of black hole mechanics using the formalism of weak isolated horizons. Definitions of horizon mass and angular momentum emerge naturally in this framework. We further go on to analyze the asymptotic symmetries, as first discussed by Brown and Henneaux, and analyze their implications in a completely covariant phase space framework.

Rudranil Basu; Ayan Chatterjee

2011-04-06T23:59:59.000Z

227

We need lab experiments to look for axion-like particles  

E-Print Network [OSTI]

The PVLAS signal has renewed the interest in light bosons coupled to the electromagnetic field. However, astrophysical bounds coming from the lifetime of the sun and the CAST experiment are seemingly in conflict with this result. We discuss effective models that allow to suppress production of axion-like particles in the sun and thereby relax the bounds by some orders of magnitude. This stresses the importance of laboratory searches.

Jaeckel, J; Redondo, J; Ringwald, A; Takahashi, F; Jaeckel, Joerg; Masso, Eduard; Redondo, Javier; Ringwald, Andreas; Takahashi, Fuminobu

2006-01-01T23:59:59.000Z

228

Tau phosphorylation by GSK-3? promotes tangle-like filament morphology  

E-Print Network [OSTI]

in tau observed in Alzheimer's disease, such as phosphorylation, truncation, ubiquitination, glycosylation or nitration, may play a role. Results: We have investigated the effects of tau phosphorylation by glycogen synthase kinase-3? (GSK-3?) on tau... regulating kinase have similar properties to induce the formation of NFT-like fil- ament bundles. Likewise, other modifications found in association with AD NFTs, such as truncation, ubiquitina- tion, nitration and glycation (reviewed in [1,10]) could also...

Rankin, Carolyn A.; Sun, Qian; Gamblin, Truman Chris

2007-06-28T23:59:59.000Z

229

Two-dimensional core-softened model with water like properties. Study by thermodynamic perturbation theory  

E-Print Network [OSTI]

Thermodynamic properties of the particles interacting through smooth version of Stell-Hemmer interaction were studied using Wertheim's thermodynamic perturbation theory. The temperature dependence of molar volume, heat capacity, isothermal compressibility and thermal expansion coefficient at constant pressure for different number of bonding sites on particle were evaluated. The model showed water-like anomalies for all evaluated quantities, but thermodynamic perturbation theory does not properly predict the dependence of these properties at a fixed number of bonding points.

T. Urbic

2013-12-16T23:59:59.000Z

230

A Study of Snake-like Locomotion Through the Analysis of a Flexible Robot Model  

E-Print Network [OSTI]

We examine the problem of snake-like locomotion by studying a system consisting of a planar inextensible elastic rod that is able to control its spontaneous curvature. Using a Cosserat model we derive, through variational principles, the equations of motion for two special cases: one in which the system is confined inside a frictionless channel, and one in which it is placed in an anisotropic frictional environment, modeling the dynamical setting of the slithering of snakes on flat surfaces. The presence of constraints in both cases leads to non-standard boundary conditions, that allow us to close the equations of motion reducing them to a differential and an integro-differential equation, respectively, for one end point (the tail) of the active rod. For the snake-like case we also provide analytic solutions for a special class of motions. We highlight the role of the spontaneous curvature in the pushing (and the steering, in the snake-like setting) needed to power locomotion. Comparisons with available experiments confirm that the model is able to capture many of the essential findings in the zoological literature. The complete solvability and the existence of analytic solutions offers a tool that may prove valuable for the design of bio-inspired soft robots.

Giancarlo Cicconofri; Antonio DeSimone

2014-09-13T23:59:59.000Z

231

Self-avoiding worm-like chain model for dsDNA loop formation  

E-Print Network [OSTI]

We compute for the first time the effects of excluded volume on the probability for double-stranded DNA to form a loop. We utilize a Monte-Carlo algorithm for generation of large ensembles of self- avoiding worm-like chains, which are used to compute the J-factor for varying lengthscales. In the entropic regime, we confirm the scaling-theory prediction of a power-law drop off of -1.92, which is significantly stronger than the -1.5 power-law predicted by the non-self-avoiding worm-like chain model. In the elastic regime, we find that the angle-independent end-to-end chain distribution is highly anisotropic. This anisotropy, combined with the excluded volume constraints, lead to an increase in the J-factor of the self-avoiding worm-like chain by about half an order of magnitude relative to its non-self-avoiding counterpart. This increase could partially explain the anomalous results of recent cyclization experiments, in which short dsDNA molecules were found to have an increased propensity to form a loop.

Yaroslav Pollak; Sarah Goldberg; Roee Amit

2014-11-06T23:59:59.000Z

232

Who Will More Likely Buy PHEV: A Detailed Market Segmentation Analysis  

SciTech Connect (OSTI)

Understanding the diverse PHEV purchase behaviors among prospective new car buyers is key for designing efficient and effective policies for promoting new energy vehicle technologies. The ORNL MA3T model developed for the U.S. Department of Energy is described and used to project PHEV purchase probabilities by different consumers. MA3T disaggregates the U.S. household vehicle market into 1458 consumer segments based on region, residential area, driver type, technology attitude, home charging availability and work charging availability and is calibrated to the EIA s Annual Energy Outlook. Simulation results from MA3T are used to identify the more likely PHEV buyers and provide explanations. It is observed that consumers who have home charging, drive more frequently and live in urban area are more likely to buy a PHEV. Early adopters are projected to be more likely PHEV buyers in the early market, but the PHEV purchase probability by the late majority consumer can increase over time when PHEV gradually becomes a familiar product. Copyright Form of EVS25.

Lin, Zhenhong [ORNL] [ORNL; Greene, David L [ORNL] [ORNL

2010-01-01T23:59:59.000Z

233

Photons into axion-like particles conversion in Active Galactic Nuclei  

E-Print Network [OSTI]

The idea that photons can convert into axion-like particles (ALPs) $\\gamma \\to a$ in or around an AGN and reconvert back into photons $a \\to \\gamma$ in the Milky Way magnetic field has been put forward in 2008 and has recently attracted growing interest. Yet, so far nobody has estimated the conversion probability $\\gamma \\to a$ as carefully as allowed by present-day knowledge. Our aim is to fill this gap. We first remark that AGN that can be detected above 100 GeV are blazars, namely AGN with jets, with one of them pointing towards us. Moreover, blazars fall into two well defined classes: BL Lac objects (BL Lacs) and Flat Spectrum Radio Quasars (FSRQs), with drastically different properties. In this Letter we evaluate the $\\gamma \\to a$ conversion probability inside these two classes of blazars, taking also the host elliptical galaxy into account. Our findings are surprising. For, while in the case of BL Lacs the conversion probability turns out to be totally unpredictable due to the strong dependence on the values of the somewhat uncertain position of the emission region along the jet and strength of the magnetic field therein, for FSRQs we are able to make a clear-cut prediction. Our results are of paramount importance in view of the planned very-high-energy detectors like the CTA, HAWK and HISCORE, as well as for laboratory experiments like ALPS II at DESY and IAXO.

Fabrizio Tavecchio; Marco Roncadelli; Giorgio Galanti

2014-06-09T23:59:59.000Z

234

The Cotton Kinesin-Like Calmodulin-Binding Protein Associates with Cortical Microtubles in Cotton Fibers  

SciTech Connect (OSTI)

Microtubules in interphase plant cells form a cortical array, which is critical for plant cell morphogenesis. Genetic studies imply that the minus end-directed microtubule motor kinesin-like calmodulin-binding protein (KCBP) plays a role in trichome morphogenesis in Arabidopsis. However, it was not clear whether this motor interacted with interphase microtubules. In cotton (Gossypium hirsutum) fibers, cortical microtubules undergo dramatic reorganization during fiber development. In this study, cDNA clones of the cotton KCBP homolog GhKCBP were isolated from a cotton fiber-specific cDNA library. During cotton fiber development from 10 to 21 DPA, the GhKCBP protein level gradually decreases. By immunofluorescence, GhKCBP was detected as puncta along cortical microtubules in fiber cells of different developmental stages. Thus the results provide evidence that GhKCBP plays a role in interphase cell growth likely by interacting with cortical microtubules. In contrast to fibers, in dividing cells of cotton, GhKCBP localized to the nucleus, the microtubule preprophase band, mitotic spindle, and the phragmoplast. Therefore KCBP likely exerts multiple roles in cell division and cell growth in flowering plants.

Preuss, Mary L.; Delmar, Deborah P.; Liu, Bo

2003-05-01T23:59:59.000Z

235

On the Observational Status of Ultrahigh Energy Cosmic Rays and their Possible Origin in Starburst-Like Galaxies  

E-Print Network [OSTI]

This paper presents a brief review of the current status of ultrahigh energy cosmic ray observations and discusses nearby starburst-like galaxies as their possible origin.

Diego F. Torres; Luis A. Anchordoqui

2005-05-13T23:59:59.000Z

236

Can the "Darmstadt oscillations" be treated as two closely spaced mass-eigenstates of the H-like mother ions ?  

E-Print Network [OSTI]

We discuss the proposal that the "Darmstadt oscillations" of the orbital K-shell electron capture decay (EC) rate of the H-like heavy ions are caused by quantum beats of two coherently excited, closely spaced mass-eigenstates of decaying H-like heavy ions. We show that such a mechanism to explain the time modulation of the EC-decay rates of the H-like heavy ions leads to the time modulation of the beta^+ decay rate of these ions with the same period. Such a time-dependence of the beta^+ decay rate of the H-like heavy ions contradicts the experimental data of GSI.

M. Faber; A. N. Ivanov; P. Kienle; E. L. Kryshen; M. Pitschmann; N. I. Troitskaya

2008-11-06T23:59:59.000Z

237

Would the heat of an oil pipeline buried 4 feet underground affect ground or surface water temperature or the roots of typical Nebraska crops like corn, soybeans, alfalfa? Would  

E-Print Network [OSTI]

temperature or the roots of typical Nebraska crops like corn, soybeans, alfalfa? Would crop yield likely

Nebraska-Lincoln, University of

238

A search for radioactive 26Al in the nova-like variable V4332 Sagittarii  

E-Print Network [OSTI]

We have searched for the important radioactive isotope 26Al in the nova-like source V4332 Sgr. Recent results from gamma ray astronomy show that there is pervasive emission of the 1.809 MeV gamma ray photon, arising from the decay of 26Al to 26Mg, from all over the galactic plane. Though the sites from where this emission originates are not clearly established, novae are believed to be an important contributing source. In this context, V4332 Sgr presented a rare opportunity to observationally investigate whether novae or novae-like sources synthesize 26Al and to what extent. Strong AlO bands in the near-IR have been reported in this object recently. As molecular bands of different isotopic compositions are readily resolved spectroscopically (e.g. 12CO and 13CO), it was thought that the components of AlO associated with 26Al and stable 27Al could be detected as separate bands. Our spectra indicate that there is no strong presence of 26Al in V4332 Sgr. A reliable upper limit of 0.10 for the 26Al/27Al ratio is determined which constitutes the first observational constraint for this ratio in a potential 26Al producing source. While V4332 Sgr is not a typical nova, its outburst amplitude and light-curve behaviour bear close similarity to that of novae. Hence, although the results from V4332 Sgr cannot be directly extended to novae in general, the limit on the observed 26Al/27Al ratio could be a useful input in constraining rather uncertain nucleosynthesis models for the production of 26Al in novae/novae-like sources. By comparing the observed 26Al/27Al ratio in V4332 Sgr with that expected in classical novae it appears unlikely that the progenitor of V4332 Sgr is an Oxygen-Neon-Magnesium white dwarf.

D. P. K. Banerjee; N. M. Ashok; O. Launila; C. J. Davis; W. P. Varricatt

2004-06-21T23:59:59.000Z

239

Revisiting He-like X-ray Emission Line Plasma Diagnostics  

E-Print Network [OSTI]

A complete model of helium-like line and continuum emission has been incorporated into the plasma simulation code Cloudy. All elements between He and Zn are treated, any number of levels can be considered, and radiative and collisional processes are included. This includes photoionization from all levels, line transfer including continuum pumping and destruction by background opacities, scattering, and collisional processes. The model is calculated self-consistently along with the ionization and thermal structure of the surrounding nebula. The result is a complete line and continuum spectrum of the plasma. Here we focus on the ions of the He I sequence and reconsider the standard helium-like X-ray diagnostics. We first consider semi-analytical predictions and compare these with previous work in the low-density, optically-thin limit. We then perform numerical calculations of helium-like X-ray emission (such as is observed in some regions of Seyferts) and predict line ratios as a function of ionizing flux, hydrogen density, and column density. In particular, we demonstrate that, in photoionized plasmas, the $R$-ratio, a density indicator in a collisional plasma, depends on the ionization fraction and is strongly affected by optical depth for large column densities. We also introduce the notion that the $R$-ratio is a measure of the incident continuum at UV wavelengths. The $G$-ratio, which is temperature-sensitive in a collisional plasma, is also discussed, and shown to be strongly affected by continuum pumping and optical depth as well. These distinguish a photoionized plasma from the more commonly studied collisional case.

R. L. Porter; G. J. Ferland

2007-04-20T23:59:59.000Z

240

Evidence for an axion-like particle from PKS 1222+216?  

E-Print Network [OSTI]

The surprising discovery by MAGIC of an intense, rapidly varying emission in the energy range 70 - 400 GeV from the flat spectrum radio quasar PKS 1222+216 represents a challenge for all interpretative scenarios. Indeed, in order to avoid absorption of \\gamma rays in the dense ultraviolet radiation field of the broad line region (BLR), one is forced to invoke some unconventional astrophysical picture, like for instance the existence of a very compact (r\\sim 10^{14} cm) emitting blob at a large distance (R \\sim10^{18} cm) from the jet base. We offer the investigation of a scenario based on the standard blazar model for PKS 1222+216 where \\gamma rays are produced close to the central engine, but we add the new assumption that inside the source photons can oscillate into axion-like particles (ALPs), which are a generic prediction of several extensions of the Standard Model of elementary particle interactions. As a result, a considerable fraction of very-high-energy photons can escape absorption from the BLR through the mechanism of photon-ALP oscillations much in the same way as they largely avoid absorption from extragalactic background light when propagating over cosmic distances in the presence of large-scale magnetic fields in the nG range. In addition we show that the above MAGIC observations and the simultaneous Fermi/LAT observations in the energy range 0.3 - 3 GeV can both be explained by a standard spectral energy distribution for experimentally allowed values of the model parameters. In particular, we need a very light ALP just like in the case of photon-ALP oscillations in cosmic space. Moreover, we find it quite tantalizing that the most favorable value of the photon-ALP coupling happens to be the same in both situations. Although our ALPs cannot contribute to the cold dark matter, they are a viable candidate for the quintessential dark energy. [abridged

F. Tavecchio; M. Roncadelli; G. Galanti; G. Bonnoli

2012-09-19T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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241

Exendin-4, a glucagon-like peptide-1 receptor agonist, reduces intimal thickening after vascular injury  

SciTech Connect (OSTI)

Research highlights: {yields} Exendin-4 reduces neointimal formation after vascular injury in a mouse model. {yields} Exendin-4 dose not alter metabolic parameters in non-diabetic, non-obese mouse model. {yields} Exendin-4 reduces PDGF-induced cell proliferation in cultured SMCs. {yields} Exendin-4 may reduces neointimal formation after vascular injury at least in part through its direct action on SMCs. -- Abstract: Glucagon-like peptide-1 is a hormone secreted by L cells of the small intestine and stimulates glucose-dependent insulin response. Glucagon-like peptide-1 receptor agonists such as exendin-4 are currently used in type 2 diabetes, and considered to have beneficial effects on the cardiovascular system. To further elucidate the effect of glucagon-like peptide-1 receptor agonists on cardiovascular diseases, we investigated the effects of exendin-4 on intimal thickening after endothelial injury. Under continuous infusion of exendin-4 at 24 nmol/kg/day, C57BL/6 mice were subjected to endothelial denudation injury of the femoral artery. Treatment of mice with exendin-4 reduced neointimal formation at 4 weeks after arterial injury without altering body weight or various metabolic parameters. In addition, in vitro studies of isolated murine, rat and human aortic vascular smooth muscle cells showed the expression of GLP-1 receptor. The addition of 10 nM exendin-4 to cultured smooth muscle cells significantly reduced their proliferation induced by platelet-derived growth factor. Our results suggested that exendin-4 reduced intimal thickening after vascular injury at least in part by the suppression of platelet-derived growth factor-induced smooth muscle cells proliferation.

Goto, Hiromasa [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan)] [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Nomiyama, Takashi, E-mail: tnomiyama@fukuoka-u.ac.jp [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan)] [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Mita, Tomoya; Yasunari, Eisuke; Azuma, Kosuke; Komiya, Koji; Arakawa, Masayuki; Jin, Wen Long; Kanazawa, Akio [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan)] [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Kawamori, Ryuzo [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan) [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Sportology Center, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Center for Therapeutic Innovations in Diabetes, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Center for Beta Cell Biology and Regeneration, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Fujitani, Yoshio; Hirose, Takahisa [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan) [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Center for Therapeutic Innovations in Diabetes, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Watada, Hirotaka, E-mail: hwatada@juntendo.ac.jp [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan) [Department of Medicine, Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan); Sportology Center, Juntendo University Graduate School of Medicine, Tokyo 113-8421 (Japan)

2011-02-04T23:59:59.000Z

242

X-ray crystal spectrometer upgrade for ITER-like wall experiments at JET  

SciTech Connect (OSTI)

The high resolution X-Ray crystal spectrometer at the JET tokamak has been upgraded with the main goal of measuring the tungsten impurity concentration. This is important for understanding impurity accumulation in the plasma after installation of the JET ITER-like wall (main chamber: Be, divertor: W). This contribution provides details of the upgraded spectrometer with a focus on the aspects important for spectral analysis and plasma parameter calculation. In particular, we describe the determination of the spectrometer sensitivity: important for impurity concentration determination.

Shumack, A. E., E-mail: amy.shumack@ccfe.ac.uk [JET-EFDA, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); FOM Institute DIFFER, P.O. Box 1207, NL-3430 BE Nieuwegein (Netherlands); Rzadkiewicz, J. [National Centre for Nuclear Research, Andrzeja So?tana 7, 05-400 Otwock (Poland); Chernyshova, M.; Czarski, T.; Karpinski, L. [Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497 Warsaw (Poland); Jakubowska, K. [Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497 Warsaw (Poland); Universit Bordeaux, CNRS, CEA, CELIA, UMR 5107, F-33405 Talence (France); Scholz, M. [Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Krakw (Poland); Byszuk, A.; Cieszewski, R.; Kasprowicz, G.; Pozniak, K.; Wojenski, A.; Zabolotny, W. [Institute of Electronic Systems, Warsaw University of Technology, 00-665 Warsaw (Poland); Dominik, W. [Faculty of Physics, Institute of Experimental Physics, Warsaw University, 00-681 Warsaw (Poland); Conway, N. J.; Dalley, S.; Tyrrell, S.; Zastrow, K.-D. [JET-EFDA, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Figueiredo, J. [EFDA-CSU, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Associao EURATOM/IST, Instituto de Plasmas e Fuso Nuclear, Instituto Superior Tcnico, Av Rovisco Pais, 1049-001 Lisbon (Portugal); and others

2014-11-15T23:59:59.000Z

243

X-ray Spectroscopy of E2 and M3 Transitions in Ni-like W  

SciTech Connect (OSTI)

The electric quadrupole (E2) and magnetic octupole (M3) ground state transitions in Ni-like W{sup 46+} have been measured using high-resolution crystal spectroscopy at the Livermore electron beam ion trap facility. The lines fall in the soft x-ray region near 7.93 {angstrom} and were originally observed as an unresolved feature in tokamak plasmas. Using flat ADP and quartz crystals the wavelengths, intensities, and polarizations of the two lines have been measured for various electron beam energies and compared to intensity and polarization calculations performed using the Flexible Atomic Code (FAC).

Clementson, J; Beiersdorfer, P; Gu, M F

2009-11-09T23:59:59.000Z

244

Excitation of autoionizing states of helium-like ions by scattering of high-energy particles  

SciTech Connect (OSTI)

The cross sections for two-electron excitations of helium-like atomic systems into the autoionizing 2s{sup 2} ({sup 1}S)- and 2p{sup 2} ({sup 1}S)-states by collisions with high-energy electrons and photons are deduced. The evaluations are performed to the leading order of non-relativistic perturbation theory. The analytical formulas for cross sections are obtained in the form of universal scalings. A comparison of our theoretical predictions with available theoretical and experimental results for the helium atom is made.

Mikhailov, A. I.; Mikhailov, I. A.; Nefiodov, A. V., E-mail: anef@thd.pnpi.spb.ru [B. P. Konstantinov Petersburg Nuclear Physics Institute (Russian Federation); Plunien, G. [Technische Universitaet Dresden, Institut fuer Theoretische Physik (Germany)] [Technische Universitaet Dresden, Institut fuer Theoretische Physik (Germany)

2013-03-15T23:59:59.000Z

245

Search for solar hadronic axions produced by a bremsstrahlung-like process  

E-Print Network [OSTI]

We have searched for hadronic axions which may be produced in the Sun by a bremsstrahlung-like process, and observed in the HPGe detector by an axioelectric effect. A conservative upper limit on the hadronic axion mass m_a < 334 eV at 95% C.L. is obtained. Our experimental approach is based on the axion-electron coupling and it does not include the axion-nucleon coupling, which suffers from the large uncertainties related to the estimation of the flavor-singlet axial-vector matrix element.

D. Kekez; A. Ljubicic; Z. Krecak; M. Krcmar

2008-12-22T23:59:59.000Z

246

Panel 2 - properties of diamond and diamond-like-carbon films  

SciTech Connect (OSTI)

This panel attempted to identify and prioritize research and development needs in determining the physical, mechanical and chemical properties of diamond and diamond-like-carbon films (D/DLCF). Three specific goals were established. They were: (1) To identify problem areas which produce concern and require a better knowledge of D/DLCF properties. (2) To identify and prioritize key properties of D/DLCF to promote transportation applications. (3) To identify needs for improvement in properties-measurement methods. Each of these goals is addressed subsequently.

Blau, P.J.; Clausing, R.E. [Oak Ridge National Lab., TN (United States); Ajayi, O.O.; Liu, Y.Y.; Purohit, A. [Argonne National Lab., IL (United States); Bartelt, P.F. [Deere & Co., Moline, IL (United States); Baughman, R.H. [Allied Signal, Morristown, NJ (United States); Bhushan, B. [Ohio State Univ., Columbus (United States); Cooper, C.V. [United Technologies Research Center, East Hartford, CT (United States); Dugger, M.T. [Sandia National Laboratories, Albuquerque, NM (United States); Freedman, A. [Aerodyne Research, Inc., Billerica, MA (United States); Larsen-Basse, J. [National Science Foundation, Washington, DC (United States); McGuire, N.R. [Caterpillar, Peoria, IL (United States); Messier, R.F. [Pennsylvania State Univ., University Park (United States); Noble, G.L.; Ostrowki, M.H. [John Crane, Inc., Morton Grove, IL (United States); Sartwell, B.D. [Naval Research Lab., Washington, DC (United States); Wei, R. [Colorado State Univ., Fort Collins (United States)

1993-01-01T23:59:59.000Z

247

Goos-Hnchen like Shifts for Graphene Barrier in Constant Magnetic Field  

E-Print Network [OSTI]

We consider a system of Dirac fermions in graphene submitted to a constant perpendicular magnetic field and scattered by a barrier potential. We show that our system can be used to establish a link with quantum optics through the Goos-H\\"{a}nchen shifts. This can be done by evaluating the corresponding transmission probability and shift phase. We obtain Goos-H\\"{a}nchen like shifts in terms of different physical parameters such as energy, electrostatic potential strength and magnetic field. On the light of this relation, we discuss the obtained results and make comparison with literature.

Ahmed Jellal; Miloud Mekkaoui; Youness Zahidi

2014-04-17T23:59:59.000Z

248

Standard Model-like D-brane models and gauge couplings  

E-Print Network [OSTI]

We systematically search intersecting D-brane models, which just realize the Standard Model chiral matter contents and gauge symmetry. We construct new classes of non-supersymmetric Standard Model-like models. We also study gauge coupling constants of these models. The tree level gauge coupling is a function of compactification moduli, string scale, string coupling and winding number of D-branes. By tuning them, we examine whether the models can explain the experimental values of gauge couplings. As a result, we find that the string scale should be greater than $10^{14-15}$GeV if the compactification scale and the string scale are the same order.

Yuta Hamada; Tatsuo Kobayashi; Shohei Uemura

2014-09-09T23:59:59.000Z

249

On the Verdet constant and Faraday rotation for graphene-like materials  

E-Print Network [OSTI]

We present a rigorous and rather self-contained analysis of the Verdet constant in graphene- like materials. We apply the gauge-invariant magnetic perturbation theory to a nearest- neighbour tight-binding model and obtain a relatively simple and exactly computable formula for the Verdet constant, at all temperatures and all frequencies of sufficiently large absolute value. Moreover, for the standard nearest neighbour tight-binding model of graphene we show that the transverse component of the conductivity tensor has an asymptotic Taylor expansion in the external magnetic field where all the coefficients of even powers are zero.

Mikkel H. Brynildsen; Horia D. Cornean

2013-02-21T23:59:59.000Z

250

On a "Robust" A-like State of $^3He$ in Aerogel  

E-Print Network [OSTI]

The orbitally isotropic Equal Spin Pairing (ESP) state has been proposed in Ref. [1] as a candidate of an A-like phase of superfluid $^3He$ in aerogel environment. In order to preserve an exact isotropy of the state in the presence of the magnetic field the condensate with equal values of the amplitudes $\\Delta_{\\uparrow\\uparrow}$ and $\\Delta_{\\downarrow\\downarrow}$ was adopted. Experimentally it is established that this version does not reproduce observed splitting asymmetry of ESP phase in aerogel under the action of an external magnetic field. Here we explore the behavior of the quasi-isotropic version of an axiplanar ESP phase with $\\Delta_{\\uparrow\\uparrow}\

G. A. Baramidze; G. A. Kharadze

2006-05-02T23:59:59.000Z

251

A Vector-Like Fourth Generation with A Discrete Symmetry From Split-UED  

SciTech Connect (OSTI)

Split-UED allows for the possibility that the lowest lying KK excitations of the Standard Model fermions can be much lighter than the corresponding gauge or Higgs KK states. This can happen provided the fermion bulk masses are chosen to be large, in units of the inverse compactification radius, 1/R, and negative. In this setup, all of the other KK states would be effectively decoupled from low energy physics. Such a scenario would then lead to an apparent vector-like fourth generation with an associated discrete symmetry that allows us to accommodate a dark matter candidate. In this paper the rather unique phenomenology presented by this picture will be examined.

Kong, Kyoungchul; /SLAC; Park, Seong Chan; /Tokyo U., IPMU; Rizzo, Thomas G.; /SLAC

2011-08-19T23:59:59.000Z

252

Numerical construction of initial data for Einstein's equations with static extension to space-like infinity  

E-Print Network [OSTI]

We describe a numerical method to construct Cauchy data extending to space-like infinity based on Corvino's (2000) gluing method. Adopting the setting of Giulini and Holzegel (2005), we restrict ourselves here to vacuum axisymmetric spacetimes and glue a Schwarzschildean end to Brill-Lindquist data describing two non-rotating black holes. Our numerical implementation is based on pseudo-spectral methods, and we carry out extensive convergence tests to check the validity of our numerical results. We also investigate the dependence of the total ADM mass on the details of the gluing construction.

Georgios Doulis; Oliver Rinne

2014-11-28T23:59:59.000Z

253

Observation of the first iso-spin Charmonium-like State $Z_c(4020)$ }  

E-Print Network [OSTI]

In this paper, we present a new experimental progress in brief on the recent observation of the charged charmonium-like state Z_c(4020)^{+/-} states and its iso-spin partner Z_c(4020)^{0} in pi pi hc process at the BESIII experiment. The charged Z_{c}(4020) is its decay into \\pi^{+/-} hc final state, and carries electric charge, thus it contains at least four quarks. The observation of both charge and neutral state makes Z_{c}(4020) the first iso-spin triplet Z_{c} state observed in experiment.

Ji, Qing-Ping; Guo, Ai-Qiang; Yu, Chun-Xu; Wang, Zhi-Yong

2015-01-01T23:59:59.000Z

254

Observation of the first iso-spin Charmonium-like State $Z_c(4020)$ }  

E-Print Network [OSTI]

In this paper, we present a new experimental progress in brief on the recent observation of the charged charmonium-like state Z_c(4020)^{+/-} states and its iso-spin partner Z_c(4020)^{0} in pi pi hc process at the BESIII experiment. The charged Z_{c}(4020) is its decay into \\pi^{+/-} hc final state, and carries electric charge, thus it contains at least four quarks. The observation of both charge and neutral state makes Z_{c}(4020) the first iso-spin triplet Z_{c} state observed in experiment.

Qing-Ping Ji; Yu-Ping Guo; Ai-Qiang Guo; Chun-Xu Yu; Zhi-Yong Wang

2015-04-10T23:59:59.000Z

255

The second-order electron self-energy in hydrogen-like ions  

E-Print Network [OSTI]

A calculation of the simplest part of the second-order electron self-energy (loop after loop irreducible contribution) for hydrogen-like ions with nuclear charge numbers $3 \\leq Z \\leq 92$ is presented. This serves as a test for the more complicated second-order self-energy parts (loop inside loop and crossed loop contributions) for heavy one-electron ions. Our results are in strong disagreement with recent calculations of Mallampalli and Sapirstein for low $Z$ values but are compatible with the two known terms of the analytical $Z\\alpha$-expansion.

I. Goidenko; L. Labzowsky; A. Nefiodov; G. Plunien; G. Soff

1999-04-08T23:59:59.000Z

256

Precise energy eigenvalues of hydrogen-like ion moving in quantum plasmas  

E-Print Network [OSTI]

The analytic form of the electrostatic potential felt by a slowly moving test charge in quantum plasma is being derived. It has been shown that the potential composed of two parts: Debye-Huckel screening term and near-field wake potential which depends on the velocity of the test charge and the number density of the plasma electrons. Rayleigh-Ritz variational calculation has been done to estimate precise energy eigenvalues of hydrogen-like ion under such plasma environment. A detailed analysis shows that the energy levels are gradually moves to the continuum with increasing plasma electron density while level crossing phenomenon have been observed with the variation of ion velocity.

Dutta, S; Mukherjee, T K

2014-01-01T23:59:59.000Z

257

LysM receptor-like kinases to improve plant defense response against fungal pathogens  

DOE Patents [OSTI]

Perception of chitin fragments (chitooligosaccharides) is an important first step in plant defense response against fungal pathogen. LysM receptor-like kinases (LysM RLKs) are instrumental in this perception process. LysM RLKs also play a role in activating transcription of chitin-responsive genes (CRGs) in plants. Mutations in the LysM kinase receptor genes or the downstream CRGs may affect the fungal susceptibility of a plant. Mutations in LysM RLKs or transgenes carrying the same may be beneficial in imparting resistance against fungal pathogens.

Wan, Jinrong (Columbia, MO); Stacey, Gary (Columbia, MO); Stacey, Minviluz (Columbia, MO); Zhang, Xuecheng (Columbia, MO)

2012-01-17T23:59:59.000Z

258

Long-range 1D gravitational-like interaction in a neutral atomic cold gas M. Chalony,1  

E-Print Network [OSTI]

Long-range 1D gravitational-like interaction in a neutral atomic cold gas M. Chalony,1 J. Barr´e,2 of this force to build in the lab a systems of particles with a 1D gravitational-like interaction, at a fluid; canonical (fixed temperature) and microcanonical (fixed energy) ensembles are not equivalent. These special

259

Free energy landscape of protein-like chains with discontinuous potentials Hanif Bayat Movahed, Ramses van Zon, and Jeremy Schofield  

E-Print Network [OSTI]

Free energy landscape of protein-like chains with discontinuous potentials Hanif Bayat Movahed://jcp.aip.org/about/rights_and_permissions #12;THE JOURNAL OF CHEMICAL PHYSICS 136, 245103 (2012) Free energy landscape of protein-like chains of observing the most common configuration is used to analyze the nature of the free energy landscape

Schofield, Jeremy

260

Discriminant Analysis of XRF Data from Sandstones of Like Facies and Appearance: A Method for Identifying a Regional Unconformity, Paleotopography,  

E-Print Network [OSTI]

Discriminant Analysis of XRF Data from Sandstones of Like Facies and Appearance: A Method Reserved #12;ABSTRACT Discriminant Analysis of XRF Data from Sandstones of Like Facies and Appearance candidate surfaces. Using statistical discriminant analysis of XRF data, formations bounding an unconformity

Seamons, Kent E.

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


261

Predictability of a Mediterranean Tropical-Like Storm Downstream of the Extratropical Transition of Hurricane Helene (2006)  

E-Print Network [OSTI]

Predictability of a Mediterranean Tropical-Like Storm Downstream of the Extratropical Transition downstream. The present study focuses on the predictability of a Mediterranean tropical-like storm (Medicane) on 26 September 2006 downstream of the ET of Hurricane Helene from 22 to 25 September. While

Chaboureau, Jean-Pierre

2006-01-01T23:59:59.000Z

262

Dirac Point and Edge States in a Microwave Realization of Tight-Binding Graphene-like Structures  

E-Print Network [OSTI]

Dirac Point and Edge States in a Microwave Realization of Tight-Binding Graphene-like Structures U-binding graphene-like structures. The structures are realized using disks with a high index of refraction properties, mechan- ically as electronically. Another realization is graphene, a one-atom-thick allotrope

Boyer, Edmond

263

What Global Warming Looks Like The July 2010 global map of surface temperature anomalies (Figure 1), relative to the average  

E-Print Network [OSTI]

What Global Warming Looks Like The July 2010 global map of surface temperature anomalies (Figure 1 anomalies an example of what we can expect global warming to look like? Maps of temperature anomalies, such as Figure 1, are useful for helping people understand the role of global warming in extreme events

264

Performance of conjugate gradient-like algorithms in transient two-phase subchannel analysis  

SciTech Connect (OSTI)

A transient, drift-flux subchannel analysis code (SWIRL) has been created for the development and evaluation of algorithms for the solution of weakly three-dimensional fluid flow problems. Spatial discretization on a staggered grid, semi-implicit temporal discretization, and algebraic reduction of the conservation equations of mass, energy, and momentum result in nonsymmetric block-tridiagonal linear systems of equations that must be solved for the pressure distribution at each time step of a transient. The solution of these systems of equations is the most time-consuming portion of the code, and direct, stationary iterative, and preconditioned conjugate gradient (CG)-like methods have been investigated both for a simple approach to steady-state and for a severe transient. The best direct algorithm appears to be an efficient implementation of block elimination, and iterative methods are compared to this algorithm for accuracy, robustness, and efficiency. Results presented here indicate that preconditioned CG-like methods such as Sonneveld's conjugate gradients squared are superior to an efficient direct method. 44 refs., 13 figs.

Turner, J.A. (Los Alamos National Lab., NM (USA)); Doster, M.J. (North Carolina State Univ., Raleigh, NC (USA). Dept. of Nuclear Engineering)

1991-01-01T23:59:59.000Z

265

Free Energy Landscape of Protein-like Chains with Discontinuous Potentials  

E-Print Network [OSTI]

In this article the configurational space of two simple protein models consisting of polymers composed of a periodic sequence of four different kinds of monomers is studied as a function of temperature. In the protein models, hydrogen bond interactions, electrostatic repulsion, and covalent bond vibrations are modeled by discontinuous step, shoulder and square-well potentials, respectively. The protein-like chains exhibit a secondary alpha helix structure in their folded states at low temperatures, and allow a natural definition of a configuration by considering which beads are bonded. Free energies and entropies of configurations are computed using the parallel tempering method in combination with hybrid Monte Carlo sampling of the canonical ensemble of the discontinuous potential system. The probability of observing the most common configuration is used to analyze the nature of the free energy landscape, and it is found that the model with the least number of possible bonds exhibits a funnel-like free energy landscape at low enough temperature for chains with fewer than 30 beads. For longer proteins, the landscape consists of several minima, where the configuration with the lowest free energy changes significantly by lowering the temperature and the probability of observing the most common configuration never approaches one due to the degeneracy of the lowest accessible potential energy.

Hanif Bayat Movahed; Ramses van Zon; Jeremy Schofield

2012-03-23T23:59:59.000Z

266

Polo-like Kinase I is involved in Invasion through Extracellular Matrix  

SciTech Connect (OSTI)

Polo-like kinase 1, PLK1, has important functions in maintaining genome stability and is involved in regulation of mitosis. PLK1 is up regulated in many invasive carcinomas. We asked whether it may also play a role in acquisition of invasiveness, a crucial step in transition to malignancy. In a model of metaplastic basal-like breast carcinoma progression, we found that PLK1 expression is necessary but not sufficient to induce invasiveness through laminin-rich extracellular matrix. PLK1 mediates invasion via Vimentin and {beta}1 integrin, both of which are necessary. We observed that PLK1 phosphorylates Vimentin on serine 82, which in turn regulates cell surface levels of {beta}1 integrin. We found PLK1 to be also highly expressed in pre-invasive in situ carcinomas of the breast. These results support a role for the involvement of PLK1 in the invasion process and point to this pathway as a potential therapeutic target for pre-invasive and invasive breast carcinoma treatment.

Bissell, Mina J; Rizki, Aylin; Mott, Joni D.; Bissell, Mina J

2008-04-02T23:59:59.000Z

267

Mechanical Design and Evaluation of the MP-11-Like Wire Scanner Prototype  

SciTech Connect (OSTI)

A wire scanner (WS) is a linearly actuated diagnostic device that uses fiber wires (such as Tungsten or Silicon Carbide) to obtain the position and intensity profile of the proton beam at the Los Alamos Neutron Science Center (LANSCE) particle accelerator. LANSCE will be installing approximately 86 new WS in the near future as part of the LANSCE Risk Mitigation project. These 86 new WS include the replacement of many current WS and some newly added to the current linear accelerator and other beam lines. The reason for the replacement and addition of WS is that many of the existing actuators have parts that are no longer readily available and are difficult to find, thus making maintenance very difficult. One of the main goals is to construct the new WS with as many commercially-available-off-the-shelf components as possible. In addition, faster beam scans (both mechanically and in term of data acquisition) are desired for better operation of the accelerator. This document outlines the mechanical design of the new MP-11-like WS prototype and compares it to a previously built and tested SNS-like WS prototype.

Rodriguez Esparza, Sergio [Los Alamos National Laboratory; Sedillo, James Daniel [Los Alamos National Laboratory; Maestas, Alfred J. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Smith, Brian G. [Los Alamos National Laboratory; Raybun, Joseph L. [Los Alamos National Laboratory; Martinez, Jason P. [Los Alamos National Laboratory; Sattler, F. D. [Los Alamos National Laboratory; Gruchalla, Michael E. [Los Alamos National Laboratory

2012-05-16T23:59:59.000Z

268

Workshop on diamond and diamond-like-carbon films for the transportation industry  

SciTech Connect (OSTI)

Applications exist in advanced transportation systems as well as in manufacturing processes that would benefit from superior tribological properties of diamond, diamond-like-carbon and cubic boron nitride coatings. Their superior hardness make them ideal candidates as protective coatings to reduce adhesive, abrasive and erosive wear in advanced diesel engines, gas turbines and spark-ignited engines and in machining and manufacturing tools as well. The high thermal conductivity of diamond also makes it desirable for thermal management not only in tribological applications but also in high-power electronic devices and possibly large braking systems. A workshop has been recently held at Argonne National Laboratory entitled ``Diamond and Diamond-Like-Carbon Films for Transportation Applications`` which was attended by 85 scientists and engineers including top people involved in the basic technology of these films and also representatives from many US industrial companies. A working group on applications endorsed 18 different applications for these films in the transportation area alone. Separate abstracts have been prepared.

Nichols, F.A.; Moores, D.K. [eds.

1993-01-01T23:59:59.000Z

269

AP Theory III: Cone-like Graded SUSY, Dynamic Dark Energy and the YM Millenium Problem  

E-Print Network [OSTI]

Artin Presentation Theory, (AP Theory), is a new, direct infusion, via pure braid theory, of discrete group theory, (i.e., symmetry in its purest form), into the theory of {\\it smooth} 4-manifolds, (i.e.,$(3+1)$-Quantum Gravity in its purest topological form), thus exhibiting the most basic, rigorous, universal, model-free intrinsic {\\it gauge-gravity} duality in a non-infinitesimal, cone-like graded, as holographic as possible, model-independent, non-perturbative, background-independent, parameter-free manner. {\\it In AP Theory even smooth topology change becomes gauge-theoretic, setting the stage for a rigorous smooth topological $(3+1)$-QFT of Dynamic Dark Energy.} In this theory, the rigid $\\infty$ of the dimension of classical Hilbert space is substituted by the dynamic $\\infty$ of the $\\infty$ generation at each stage of a cone-like graded subgroup of topology-changing transitions/interactions. As a corollary, the Cosmological Constant problem and the YM Millenium Mass Gap problem, two of the most perpl...

Winkelnkemper, H E

2010-01-01T23:59:59.000Z

270

Like-sign dimuon charge asymmetry in the Randall-Sundrum model  

SciTech Connect (OSTI)

We confirm that in order to account for the recent D0 result of large like-sign dimuon charge asymmetry, a considerable large new physics effect in {Gamma}{sub 12}{sup s} is required in addition to a large CP violating phase in B{sub s}-B{sub s} mixing. In the Randall-Sundrum model of warped geometry, where the fermion fields reside in the bulk, new sources of flavor and CP violation are obtained. We analyze the like-sign dimuon asymmetry in this class of model as an example of the desired new physics. We show that the wrong-charge asymmetry, a{sub sl}{sup s}, which is related to the dimuon asymmetry, is significantly altered compared to the standard model value. However, experimental limits from {Delta}M{sub s}, {Delta}{Gamma}{sub s} as well as K mixing and electroweak corrections constrain it to be greater than a {sigma} away from its experimental average value. This model cannot fully account for the D0 anomaly due to its inability to generate a sufficient new contribution to the width difference {Gamma}{sub 12}{sup s}, even though the model can generate large contribution to the mass difference M{sub 12}{sup s}.

Datta, Alakabha; Duraisamy, Murugeswaran; Khalil, Shaaban [Department of Physics and Astronomy, 108 Lewis Hall, University of Mississippi, Oxford, Mississippi 38677-1848 (United States); Center for Theoretical Physics at the British University in Egypt, Sherouk City, Cairo 11837 (Egypt) and Department of Mathematics, Ain Shams University, Faculty of Science, Cairo, 11566 (Egypt)

2011-05-01T23:59:59.000Z

271

Atmospheric Circulation and Tides of "51Peg b-like" Planets  

E-Print Network [OSTI]

We examine the properties of the atmospheres of extrasolar giant planets at orbital distances smaller than 0.1 AU from their stars. We show that these ``51Peg b-like'' planets are rapidly synchronized by tidal interactions, but that small departures from synchronous rotation can occur because of fluid-dynamical torques within these planets. Previous radiative-transfer and evolution models of such planets assume a homogeneous atmosphere. Nevertheless, we show using simple arguments that, at the photosphere, the day-night temperature difference and characteristic wind speeds may reach ~500 K and ~2 km/s, respectively. Substantial departures from chemical equilibrium are expected. The cloud coverage depends sensitively on the dynamics; clouds could exist predominantly either on the dayside or nightside, depending on the circulation regime. Radiative-transfer models that assume homogeneous conditions are therefore inadequate in describing the atmospheric properties of 51Peg b-like planets. We present preliminary three-dimensional, nonlinear simulations of the atmospheric circulation of HD209458b that indicate plausible patterns for the circulation and generally agree with our simpler estimates. Furthermore, we show that kinetic energy production in the atmosphere can lead to the deposition of substantial energy in the interior, with crucial consequences for the evolution of these planets. Future measurements of reflected and thermally-emitted radiation from these planets will help test our ideas.

Adam P. Showman; Tristan Guillot

2002-02-12T23:59:59.000Z

272

The habitable zone of Earth-like planets with different levels of atmospheric pressure  

E-Print Network [OSTI]

As a contribution to the study of the habitability of extrasolar planets, we implemented a 1-D Energy Balance Model (EBM), the simplest seasonal model of planetary climate, with new prescriptions for most physical quantities. Here we apply our EBM to investigate the surface habitability of planets with an Earth-like atmospheric composition but different levels of surface pressure. The habitability, defined as the mean fraction of the planet's surface on which liquid water could exist, is estimated from the pressure-dependent liquid water temperature range, taking into account seasonal and latitudinal variations of surface temperature. By running several thousands of EBM simulations we generated a map of the habitable zone (HZ) in the plane of the orbital semi-major axis, a, and surface pressure, p, for planets in circular orbits around a Sun-like star. As pressure increases, the HZ becomes broader, with an increase of 0.25 AU in its radial extent from p=1/3 bar to p=3 bar. At low pressure, the habitability is...

Vladilo, Giovanni; Silva, Laura; Provenzale, Antonello; Ferri, Gaia; Ragazzini, Gregorio

2013-01-01T23:59:59.000Z

273

Gravitational Wave Spectrums from Pole-like Inflations based on Generalized Gravity Theories  

E-Print Network [OSTI]

We present a general and unified formulation which can handle the classical evolution and quantum generation processes of the cosmological gravitational wave in a broad class of generalized gravity theories. Applications are made in several inflation models based on the scalar-tensor theory, the induced gravity, and the low energy effective action of string theory. The gravitational wave power spectrums based on the vacuum expectation value of the quantized fluctuating metric during the pole-like inflation stages are derived in analytic forms. Assuming that the gravity theory transits to Einstein one while the relevant scales remain in the superhorizon scale, we derive the consequent power spectrums and the directional fluctuations of the relic radiation produced by the gravitational wave. The spectrums seeded by the vacuum fluctuations in the pole-like inflation models based on the generalized gravity show a distinguished common feature which differs from the scale invariant spectrum generated in an exponential inflation in Einstein gravity which is supported by observations.

J. Hwang

1997-10-10T23:59:59.000Z

274

Effects of Radiative Diffusion on Thin Flux Tubes in Turbulent Solar-like Convection  

E-Print Network [OSTI]

We study the combined effects of convection and radiative diffusion on the evolution of thin magnetic flux tubes in the solar interior. Radiative diffusion is the primary supplier of heat to convective motions in the lower convection zone, and it results in a heat input per unit volume of magnetic flux tubes that has been ignored by many previous thin flux tube studies. We use a thin flux tube model subject to convection taken from a rotating spherical shell of turbulent, solar-like convection as described by Weber, Fan, and Miesch (2011, Astrophys. J., 741, 11; 2013, Solar Phys., 287, 239), now taking into account the influence of radiative heating on flux tubes of large-scale active regions. Our simulations show that flux tubes of less than or equal to 60 kG subject to solar-like convective flows do not anchor in the overshoot region, but rather drift upward due to the increased buoyancy of the flux tube earlier in its evolution as a result of the inclusion of radiative diffusion. Flux tubes of magnetic fie...

Weber, Maria A

2015-01-01T23:59:59.000Z

275

Towards the Final State of Spherical Gravitational Collapse and Likely Source of Gamma Ray Bursts  

E-Print Network [OSTI]

We invoke the global properties of the actual GTR field equations for spherical collapse to directly show that the condition for formation of trapped surfaces, 2GM/R >1 is not allowed by GTR. And therefore all singularity theorems based on the assumption of formation of trapped surfaces are invalidated! Our conclusion is in perfect agreement with Einstein's intuitive idea that a Sch. like surface can not occur in reality. Further as singularity is approached R ->0, in order that 2GM/R 0! Harrison, et al. had also pointed out that collapse should come to a decisive end with M=0. This is possible in GTR if the fluid radiates its entire original mass-energy during the relentless graviatational contraction process, Q->M c^2! Since the actual efficiency for gamma ray production by the relevant blast wave may hardly exceed 10-20% and there could be a stronger (undetected) nu-anti-nu burst precding GRBs, the actual energy released for GRB 990123, even accounting for probable weak beaming, or for GRB 971214 (unbeamed) could be ~10^{54-55} erg. And such energy release may not be properly accountable without realizing that trapped surfaces are indeed not formed. All authors concerned with this subject, and particularly those, who would like to differ with our derivation are requested to send their criticism either directly or express the same openly for a healthy scientific discussion.

Abhas Mitra

1999-09-23T23:59:59.000Z

276

A PRECISE ASTEROSEISMIC AGE AND RADIUS FOR THE EVOLVED SUN-LIKE STAR KIC 11026764  

SciTech Connect (OSTI)

The primary science goal of the Kepler Mission is to provide a census of exoplanets in the solar neighborhood, including the identification and characterization of habitable Earth-like planets. The asteroseismic capabilities of the mission are being used to determine precise radii and ages for the target stars from their solar-like oscillations. Chaplin et al. published observations of three bright G-type stars, which were monitored during the first 33.5 days of science operations. One of these stars, the subgiant KIC 11026764, exhibits a characteristic pattern of oscillation frequencies suggesting that it has evolved significantly. We have derived asteroseismic estimates of the properties of KIC 11026764 from Kepler photometry combined with ground-based spectroscopic data. We present the results of detailed modeling for this star, employing a variety of independent codes and analyses that attempt to match the asteroseismic and spectroscopic constraints simultaneously. We determine both the radius and the age of KIC 11026764 with a precision near 1%, and an accuracy near 2% for the radius and 15% for the age. Continued observations of this star promise to reveal additional oscillation frequencies that will further improve the determination of its fundamental properties.

Metcalfe, T. S. [High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO 80307 (United States); Monteiro, M. J. P. F. G. [Centro de Astrofisica and DFA-Faculdade de Ciencias, Universidade do Porto (Portugal); Thompson, M. J. [School of Mathematics and Statistics, University of Sheffield, Hounsfield Road, Sheffield S3 7RH (United Kingdom); Molenda-Zakowicz, J. [Astronomical Institute, University of Wroclaw, ul. Kopernika 11, 51-622 Wroclaw (Poland); Appourchaux, T. [Institut d'Astrophysique Spatiale, Universite Paris XI-CNRS (UMR8617), Batiment 121, 91405 Orsay Cedex (France); Chaplin, W. J. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom); Dogan, G. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Eggenberger, P. [Geneva Observatory, University of Geneva, Maillettes 51, 1290 Sauverny (Switzerland); Bedding, T. R.; Stello, D. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Bruntt, H. [Observatoire de Paris, 5 place Jules Janssen, 92190 Meudon Principal Cedex (France); Creevey, O. L. [Instituto de Astrofisica de Canarias, E-38200 La Laguna (Spain); Quirion, P.-O. [Canadian Space Agency, 6767 Boulevard de l'Aeroport, Saint-Hubert, QC, J3Y 8Y9 (Canada); Bonanno, A. [INAF-Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania (Italy); Silva Aguirre, V. [Max-Planck-Institute for Astrophysics, Karl Schwarzschild Str. 1, Garching, D-85741 (Germany); Basu, S.; Esch, L.; Gai, N. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Di Mauro, M. P. [INAF-IASF Roma, Istituto di Astrofisica Spaziale e Fisica Cosmica, via del Fosso del Cavaliere 100, 00133 Roma (Italy); Kosovichev, A. G. [HEPL, Stanford University, Stanford, CA 94305-4085 (United States)

2010-11-10T23:59:59.000Z

277

AMPLITUDES OF SOLAR-LIKE OSCILLATIONS: CONSTRAINTS FROM RED GIANTS IN OPEN CLUSTERS OBSERVED BY KEPLER  

SciTech Connect (OSTI)

Scaling relations that link asteroseismic quantities to global stellar properties are important for gaining understanding of the intricate physics that underpins stellar pulsations. The common notion that all stars in an open cluster have essentially the same distance, age, and initial composition implies that the stellar parameters can be measured to much higher precision than what is usually achievable for single stars. This makes clusters ideal for exploring the relation between the mode amplitude of solar-like oscillations and the global stellar properties. We have analyzed data obtained with NASA's Kepler space telescope to study solar-like oscillations in 100 red giant stars located in either of the three open clusters, NGC 6791, NGC 6819, and NGC 6811. By fitting the measured amplitudes to predictions from simple scaling relations that depend on luminosity, mass, and effective temperature, we find that the data cannot be described by any power of the luminosity-to-mass ratio as previously assumed. As a result we provide a new improved empirical relation which treats luminosity and mass separately. This relation turns out to also work remarkably well for main-sequence and subgiant stars. In addition, the measured amplitudes reveal the potential presence of a number of previously unknown unresolved binaries in the red clump in NGC 6791 and NGC 6819, pointing to an interesting new application for asteroseismology as a probe into the formation history of open clusters.

Stello, Dennis; Huber, Daniel; Bedding, Timothy R.; Benomar, Othman [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Kallinger, Thomas [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Mosser, BenoIt [LESIA, CNRS, Universite Pierre et Marie Curie, Universite Denis Diderot, Observatoire de Paris, 92195 Meudon (France); Hekker, Saskia [Astronomical Institute 'Anton Pannekoek', University of Amsterdam, P.O. Box 94249, 1090 GE Amsterdam (Netherlands); Mathur, Savita [High Altitude Observatory, NCAR, P.O. Box 3000, Boulder, CO 80307 (United States); GarcIa, Rafael A. [Laboratoire AIM, CEA/DSM-CNRS, Universite Paris 7 Diderot, IRFU/SAp, Centre de Saclay, 91191 Gif-sur-Yvette (France); Kjeldsen, Hans; Grundahl, Frank; Christensen-Dalsgaard, Joergen [Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C (Denmark); Gilliland, Ronald L. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Verner, Graham A.; Chaplin, William J.; Elsworth, Yvonne P. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Meibom, Soeren [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Molenda-Zakowicz, Joanna [Instytut Astronomiczny Uniwersytetu Wroclawskiego, ul. Kopernika 11, 51-622 Wroclaw (Poland); Szabo, Robert [Konkoly Observatory of the Hungarian Academy of Sciences, Konkoly Thege Miklos ut 15-17, H-1121 Budapest (Hungary)

2011-08-10T23:59:59.000Z

278

Laser-driven search of axion-like particles including vacuum polarization effects  

E-Print Network [OSTI]

Oscillations of photons into axion-like particles in a high-intensity laser field are investigated. Nonlinear QED effects are considered through the low energy behavior of the vacuum polarization tensor, which is derived from the Euler-Heisenberg Lagrangian in the one-loop and weak field approximations. The expressions obtained in this framework are applied to the configuration in which the strong background field is a circularly polarized monochromatic plane wave. The outcomes of this analysis reveal that, in the regime of low energy-momentum transfer, the axion field induces a chiral-like birefringence and dichroism in the vacuum which is not manifest in a pure QED context. The corresponding ellipticity and angular rotation of the polarization plane are also determined. We take advantage of such observables to impose exclusion limits on the axion parameters. Our predictions cover axion masses for which a setup based on dipole magnets provides less stringent constraints. Possible experimental scenarios in which our results could be tested are also discussed.

Selym Villalba-Chvez

2014-02-26T23:59:59.000Z

279

THE HABITABILITY AND DETECTION OF EARTH-LIKE PLANETS ORBITING COOL WHITE DWARFS  

SciTech Connect (OSTI)

Since there are several ways planets can survive the giant phase of the host star, we examine the habitability and detection of planets orbiting white dwarfs. As a white dwarf cools from 6000 K to 4000 K, a planet orbiting at 0.01 AU would remain in the continuous habitable zone (CHZ) for {approx}8 Gyr. We show that photosynthetic processes can be sustained on such planets. The DNA-weighted UV radiation dose for an Earth-like planet in the CHZ is less than the maxima encountered on Earth, and hence non-magnetic white dwarfs are compatible with the persistence of complex life. Polarization due to a terrestrial planet in the CHZ of a cool white dwarf (CWD) is 10{sup 2} (10{sup 4}) times larger than it would be in the habitable zone of a typical M-dwarf (Sun-like star). Polarimetry is thus a viable way to detect close-in rocky planets around white dwarfs. Multi-band polarimetry would also allow us to reveal the presence of a planet atmosphere, providing a first characterization. Planets in the CHZ of a 0.6 M{sub Sun} white dwarf will be distorted by Roche geometry, and a Kepler-11d analog would overfill its Roche lobe. With current facilities a super-Earth-sized atmosphereless planet is detectable with polarimetry around the brightest known CWD. Planned future facilities render smaller planets detectable, in particular by increasing the instrumental sensitivity in the blue.

Fossati, L.; Haswell, C. A.; Patel, M. R.; Busuttil, R. [Department of Physical Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom); Bagnulo, S. [Armagh Observatory, College Hill, Armagh BT61 9DG (United Kingdom); Kowalski, P. M. [GFZ German Research Centre for Geosciences, Telegrafenberg, D-14473 Potsdam (Germany); Shulyak, D. V. [Institute of Astrophysics, Georg-August-University, Friedrich-Hund-Platz 1, D-37077 Goettingen (Germany); Sterzik, M. F., E-mail: l.fossati@open.ac.uk, E-mail: C.A.Haswell@open.ac.uk, E-mail: M.R.Patel@open.ac.uk, E-mail: r.busuttil@open.ac.uk, E-mail: sba@arm.ac.uk, E-mail: kowalski@gfz-potsdam.de, E-mail: denis.shulyak@gmail.com, E-mail: msterzik@eso.org [European Southern Observatory, Casilla 19001, Santiago 19 (Chile)

2012-09-20T23:59:59.000Z

280

THE VELA PULSAR AND ITS LIKELY COUNTER-JET IN THE K{sub s} BAND  

SciTech Connect (OSTI)

We report the first high spatial resolution near-infrared (near-IR) imaging of the Vela pulsar in the K{sub s} band obtained with the new adaptive optics system recently mounted on the Gemini-South telescope. For the first time, we have firmly detected the pulsar in this band with K{sub s} ? 21.8 mag, and have resolved in detail an extended feature barely detected previously in the immediate vicinity of the pulsar in the J{sub s}H bands. The pulsar K{sub s} flux is fully consistent with the extension of the flat optical spectrum of the pulsar toward the IR and does not confirm the strong IR flux excess in the pulsar emission suggested earlier by the low spatial resolution data. The extended feature is about two times brighter than the pulsar and is likely associated with its X-ray counter-jet. It extends ?2'' southward of the pulsar along the X-ray counter-jet and shows knot-like structures and a red spectrum.

Zyuzin, D.; Shibanov, Yu.; Danilenko, A. [Ioffe Physical Technical Institute, Politekhnicheskaya 26, St. Petersburg 194021 (Russian Federation); Mennickent, R. E. [Department of Astronomy, Universidad de Concepcion, Casilla 160-C, Concepcion (Chile); Zharikov, S. [Observatorio Astronmico Nacional SPM, Instituto de Astronoma, UNAM, Ensenada, BC (Mexico)

2013-10-01T23:59:59.000Z

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281

Characterization of diamond-like nanocomposite thin films grown by plasma enhanced chemical vapor deposition  

SciTech Connect (OSTI)

Diamond-like nanocomposite (DLN) thin films, comprising the networks of a-C:H and a-Si:O were deposited on pyrex glass or silicon substrate using gas precursors (e.g., hexamethyldisilane, hexamethyldisiloxane, hexamethyldisilazane, or their different combinations) mixed with argon gas, by plasma enhanced chemical vapor deposition technique. Surface morphology of DLN films was analyzed by atomic force microscopy. High-resolution transmission electron microscopic result shows that the films contain nanoparticles within the amorphous structure. Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and x-ray photoelectron spectroscopy (XPS) were used to determine the structural change within the DLN films. The hardness and friction coefficient of the films were measured by nanoindentation and scratch test techniques, respectively. FTIR and XPS studies show the presence of C-C, C-H, Si-C, and Si-H bonds in the a-C:H and a-Si:O networks. Using Raman spectroscopy, we also found that the hardness of the DLN films varies with the intensity ratio I{sub D}/I{sub G}. Finally, we observed that the DLN films has a better performance compared to DLC, when it comes to properties like high hardness, high modulus of elasticity, low surface roughness and low friction coefficient. These characteristics are the critical components in microelectromechanical systems (MEMS) and emerging nanoelectromechanical systems (NEMS).

Santra, T. S.; Liu, C. H. [Institute of Nanoengineering and Microsystems (NEMS), National Tsing Hua University, Hsinchu, Taiwan 30043 (China); Bhattacharyya, T. K. [Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur 721302, West Bengal (India); Patel, P. [Department of Electrical and Computer Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801 (United States); Barik, T. K. [School of Applied Sciences, Haldia Institute of Technology, Haldia 721657, Purba Medinipur, West Bengal (India)

2010-06-15T23:59:59.000Z

282

Sideband Cooling while Preserving Coherences in the Nuclear Spin State in Group-II-like Atoms  

SciTech Connect (OSTI)

We propose a method for laser cooling group-II-like atoms without changing the quantum state of their nuclear spins, thus preserving coherences that are usually destroyed by optical pumping in the cooling process. As group-II-like atoms have a {sup 1}S{sub 0} closed-shell ground state, nuclear spin and electronic angular momentum are decoupled, allowing for their independent manipulation. The hyperfine interaction that couples these degrees of freedom in excited states can be suppressed through the application of external magnetic fields. Our protocol employs resolved-sideband cooling on the forbidden clock transition, {sup 1}S{sub 0}{yields}{sup 3}P{sub 0}, with quenching via coupling to the rapidly decaying {sup 1}P{sub 1} state, deep in the Paschen-Back regime. This makes it possible to laser cool neutral atomic qubits without destroying the quantum information stored in their nuclear spins, as shown in two examples, {sup 171}Yb and {sup 87}Sr.

Reichenbach, Iris; Deutsch, Ivan H. [Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)

2007-09-21T23:59:59.000Z

283

Strain-engineered band parameters of graphene-like SiC monolayer  

SciTech Connect (OSTI)

Using full-potential density functional theory (DFT) calculations we show that the band gap and effective masses of charge carriers in SiC monolayer (ML-SiC) in graphene-like two-dimensional honeycomb structure are tunable by strain engineering. ML-SiC was found to preserve its flat 2D graphene-like structure under compressive strain up to 7%. A transition from indirect-to-direct gap-phase is predicted to occur for a strain value lying within the interval (1.11 %, 1.76%). In both gap-phases band gap decreases with increasing strain, although the rate of decrease is different in the two gap-phases. Effective mass of electrons show a non-linearly decreasing trend with increasing tensile strain in the direct gap-phase. The strain-sensitive properties of ML-SiC, may find applications in future strain-sensors, nanoelectromechanical systems (NEMS) and nano-optomechanical systems (NOMS) and other nano-devices.

Behera, Harihar, E-mail: harihar@theglocaluniversity.in [School of Technology, The Glocal University, Mirzapur Pole, Dist.-Saharanpur, U.P.-247001, India and Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India); Mukhopadhyay, Gautam, E-mail: gmukh@phy.iitb.ac.in [Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India)

2014-10-06T23:59:59.000Z

284

We haven't discovered any aliens yet so we don't know if they exist. But, many scientists think it is likely we  

E-Print Network [OSTI]

We haven't discovered any aliens yet so we don't know if they exist. But, many scientists think it is likely we will someday discover aliens and that they won't look like the little green men in cartoons and find out what microbes help produce each food. What would aliens look like?What would aliens look like

286

Hydrothermal synthesis and infrared emissivity property of flower-like SnO{sub 2} particles  

SciTech Connect (OSTI)

The flower-like SnO{sub 2} particles are synthesized through a simple hydrothermal process. The microstructure, morphology and the infrared emissivity property of the as-prepared products are characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and infrared spectroradio meter (ISM) respectively. The results show that the as-prepared SnO{sub 2} products are all indexed to tetragonal cassiterite phase of SnO{sub 2}. The different molarity ratios of the OH{sup ?} concentration to Sn{sup 4+} concentration ([OH{sup ?}]:[Sn{sup 4+}]) and the polyacrylamide (PAM) lead to the different morphological structures of SnO{sub 2}, which indicates that both the [OH{sup ?}]:[Sn{sup 4+}] and the PAM play an important role in the morphological evolution respectively. The infrared emissivities of the as-prepared SnO{sub 2} products are discussed.

Tian, J. X. [Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China) [Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China); Beijing Institute of Environmental Features, Beijing, 100854 (China); Zhang, Z. Y., E-mail: zhangzy@nwu.edu.cn [Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China); School of Information Science and Technology, Northwest University, Xi'an 710127 (China); Yan, J. F.; Ruan, X. F.; Yun, J. N.; Zhao, W.; Zhai, C. X. [School of Information Science and Technology, Northwest University, Xi'an 710127 (China)] [School of Information Science and Technology, Northwest University, Xi'an 710127 (China)

2014-04-15T23:59:59.000Z

287

Patchy worm-like micelles: solution structure studied by small-angle neutron scattering  

E-Print Network [OSTI]

Triblock terpolymers exhibit a rich self-organization behavior including the formation of fascinating cylindrical core-shell structures with a phase separated corona. After crystallization-induced self-assembly of polystryrene-(block)-polyethylene-(block)-poly(methyl methacrylate) triblock terpolymers (abbreviated as SEMs = Styrene-Ethylene-Methacrylates) from solution, worm-like core-shell micelles with a patchy corona of polystryrene and poly(methyl methacrylate) were observed by transmission electron microscopy. However, the solution structure is still a matter of debate. Here, we present a method to distinguish in-situ between a Janus-type (two faced) and a patchy (multiple compartments) configuration of the corona. To discriminate between both models the scattering intensity must be determined mainly by one corona compartment. Contrast variation in small-angle neutron scattering enables us to focus on one compartment of the SEMs. The results validate the existence of the patchy structure also in solution.

S. Rosenfeldt; F. Luedel; C. Schulreich; T. Hellweg; A. Radulescu; J. Schmelz; H. Schmalz; L. Harnau

2012-09-20T23:59:59.000Z

288

Friedmann-like collapsing model of a radiating sphere with heat flow  

SciTech Connect (OSTI)

This paper considers a spherical body consisting of a fluid with heat flow which radiates in its exterior a null fluid described by the outgoing Vaidya's metric. A Friedmann-like exact solution of the interior Einstein field equations is given. It is proved that this solution, matched with the outgoing Vaidya matric, represents a physically reasonble collapsing model which, when the heat flow is switched off, reduces to the well-known collapsing model with dust. The proposed model has the remarkable property that even if the heat flow is small, the horizon will never be formed because, before this happens, the collapsing body will be destroyed by opposite gradients of pressure. 6 references.

Kolassis, C.A.; Santos, N.O.; Tsoubelis, D.

1988-04-01T23:59:59.000Z

289

Experimental Results with the New ITER-like 1 MV SINGAP Accelerator  

SciTech Connect (OSTI)

A new 'ITER-like' accelerator, which is a scaled down version of the ITER SINGAP (SINgle GAP, SINGle APerture) accelerator, has been built and installed on the Cadarache 1 MV test bed. The objective is to demonstrate reliable D- beam acceleration as close as possible to 1 MeV with a current density j- {approx_equal} 200 A/m2 with the beam optics required for ITER, i.e. a beamlet divergence of {<=}7 mrad and beamlet steering within {+-}2 mrad of that specified. High voltage hold off tests have been performed and 940 kV has been held without breakdowns. The first beams up to 850 keV (D-, 15 A/m2) have been obtained after 4 weeks of experiments and the highest current density that has been obtained so far is 85 A/m2 (D-, 580 keV)

Svensson, L.; Esch, H.P.L. de; Hemsworth, R.S.; Massmann, P. [Association EURATOM-CEA, CEA/DSM/DRFC, CEA -Cadarache, 13108 St Paul-lez-Durance (France); Boilson, D. [Association EURATOM-DCU, PRL/NCPST, Glasnevin, Dublin 13 (Ireland)

2005-04-06T23:59:59.000Z

290

The High-Z hydrogen-like atom: a model for polarized structure functions  

E-Print Network [OSTI]

The Dirac equation offers a precise analytical description of relativistic two-particle bound states, when one of the constituent is very heavy and radiative corrections are neglected. Looking at the high-Z hydrogen-like atom in the infinite momentum frame and treating the electron as a "parton", various properties usually attributed to the quark distributions in the nucleon are tested, in particular: Bj{\\o}rken scaling; charge, helicity, transversity and momentum sum rules; existence of the parton sea; Soffer inequality; correlation between spin and transverse momentum (Sivers and Boer-Mulders effects); transverse displacement of the center-of-charge and its connection with the magnetic moment. Deep inelastic experiments with photon or positron beams at MeV energies, analogous to DIS or Drell-Yan reactions, are considered.

X. Artru; K. Benhizia

2007-12-05T23:59:59.000Z

291

Radiation reaction and renormalization for a photon-like charged particle  

E-Print Network [OSTI]

A renormalization scheme which relies on energy-momentum and angular momentum balance equations is applied to the derivation of effective equation of motion for a massless point-like charge. Unlike the massive case, the rates of radiated energy-momentum and angular momentum tend to infinity whenever the source is accelerated. The external electromagnetic fields which do not change the velocity of the particle admit only its presence within the interaction area. The effective equation of motion is the equation on eigenvalues and eigenvectors of the electromagnetic tensor. The massless charges move along base line determined by the eigenvectors when the effective equation of motion possesses uniform solutions. It is interesting that the same solution arises in Rylov's model of magnetosphere of a rapidly rotating neutron star (pulsar).

Yurij Yaremko

2009-07-21T23:59:59.000Z

292

X-ray powerful diagnostics for highly-ionized plasmas: He-like ions  

E-Print Network [OSTI]

The calculations of the ratios of the Helium-like ion X-ray lines from C V to Si XIII are revisited in order to apply the results to density, temperature and ionization process diagnostics of data from high-resolution spectroscopy of the new generation of X-ray satellites: Chandra and XMM-Newton. Comparing to earlier computations, Porquet & Dubau (2000), the best experimental values are used for radiative transition probabilities. The influence of an external radiation field (photo-excitation), the contribution from unresolved dielectronic satellite lines and the optical depth are taken into account. These diagnostics could be applied to collision-dominated plasmas (e.g., stellar coronae), photo-ionized plasmas (e.g., ``Warm Absorber'' in AGNs), and transient plasmas (e.g., SNRs).

D. Porquet; R. Mewe; J. S. Kaastra; J. Dubau; A. J. J. Raassen

2002-04-08T23:59:59.000Z

293

Helium-like ions as powerful X-ray plasma diagnostics  

E-Print Network [OSTI]

We revisited the calculations of the ratios of the Helium-like ion ``triplet'' (resonance, intercombination, and forbidden lines) for Z=6 to 14 (C V, N VI, O VII, Ne IX, Mg XI, Si XIII) in order to provide temperature, density and ionization diagnostics for the new high-resolution spectroscopic data of Chandra and XMM-Newton. Comparing to earlier computations, collisional rates are updated and the best experimental values for radiative transition probabilities are used. The influence of an external radiation field (photo-excitation) and the contribution from unresolved dielectronic satellite lines to the line ratios are discussed. Collision-dominated plasmas (e.g. stellar coronae), photo-ionized plasmas (e.g. AGNs) or transient plasmas (e.g. SNRs) are considered.

D. Porquet; R. Mewe; A. J. J Raassen; J. S. Kaastra; J. Dubau

2000-12-12T23:59:59.000Z

294

Chimera States in a Two-Population Network of Coupled Pendulum-Like Elements  

E-Print Network [OSTI]

More than a decade ago, a surprising coexistence of synchronous and asynchronous behavior called the chimera state was discovered in networks of nonlocally coupled identical phase oscillators. In later years, chimeras were found to occur in a variety of theoretical and experimental studies of chemical and optical systems, as well as models of neuron dynamics. In this work, we study two coupled populations of pendulum-like elements represented by phase oscillators with a second derivative term multiplied by a mass parameter $m$ and treat the first order derivative terms as dissipation with parameter $\\epsilon>0$. We first present numerical evidence showing that chimeras do exist in this system for small mass values $0

Tassos Bountis; Vasileios G. Kanas; Johanne Hizanidis; Anastasios Bezerianos

2014-02-20T23:59:59.000Z

295

Differential-like Chosen Cipher Attack on A Spatiotemporally Chaotic Cryptosystem  

E-Print Network [OSTI]

The combinative applications of one-way coupled map lattice (OCML) and some simple algebraic operations have demonstrated to be able to construct the best known chaotic cryptosystem with high practical security, fast encryption speed, and excellent robustness against channel noise. In this paper, we propose a differential-like chosen cipher attack to break the prototypical system cooperating with INT and MOD operations. This cryptographic method exploits the weakness that the high-dimensional cryptosystem degenerates to be one-dimensional under constant driving, therefore, is no more sensitive to the slight perturbation on the driving after convergence. The experimental results show that this method can successfully extract the key within just hundreds of iterations. To the best of our knowledge, it is the first time to present successful cryptanalysis on such a cryptosystem. we also make some suggestions to improve the security in future versions.

Jiantao Zhou; Wenjiang Pei; Jie Huang; Aiguo Song; Zhenya He

2005-06-11T23:59:59.000Z

296

The unreasonable effectiveness of equilibrium-like theory for interpreting non-equilibrium experiments  

E-Print Network [OSTI]

There has been great interest in applying the results of statistical mechanics to single molecule experiements. Recent work has highlighted so-called non-equilibrium work-energy relations and Fluctuation Theorems which take on an equilibrium-like (time independent) form. Here I give a very simple heuristic example where an equilibrium result (the barometric law for colloidal particles) arises from theory describing the {\\em thermodynamically} non-equilibrium phenomenon of a single colloidal particle falling through solution due to gravity. This simple result arises from the fact that the particle, even while falling, is in {\\em mechanical} equilibrium (gravitational force equal the viscous drag force) at every instant. The results are generalized by appeal to the central limit theorem. The resulting time independent equations that hold for thermodynamically non-equilibrium (and even non-stationary) processes offer great possibilities for rapid determination of thermodynamic parameters from single molecule experiments.

R. Dean Astumian

2005-12-01T23:59:59.000Z

297

Tailor-Made Onion-Like Stereocomplex Crystals in Incompatible Enantiomeric Polylactide Containing Block Copolymer Blends  

SciTech Connect (OSTI)

Stereocomplexes formed by blending enantiomeric PLA block copolymers have demonstrated great potential for applications in biomedical devices. Here, we successfully synthesized well-defined enantiomeric PLA containing block copolymers by living ring-opening polymerization of L- and D-lactides from hydroxyl-terminated hydrophilic [poly(ethylene oxide) or PEO] and hydrophobic [poly(ethylene-co-1,2-butylene) or PEB] oligomers. Quantitative stereocomplex formation was achieved by equimolar mixing of the incompatible PEO-b-PLLA and PEB-b-PDLA. Intriguingly, in the blend of PEB-b-PDLA and PEO-b-PLLA with different PEB and PEO molecular weights, onion-like stereocomplex crystals were observed because of unbalanced surface stresses caused by different PEO and PEB molecular weights.

Sun,L.; Zhu, L.; Rong, L.; Hsiao, B.

2006-01-01T23:59:59.000Z

298

Solution Structure of the Yeast Ubiquitin-Like Modifier Protein Hub1  

SciTech Connect (OSTI)

The Hub1 protein from Saccharomyces cerevisiae (NESG ID: YTYst190 / PIR: S78735/ GI: 7493880) is a ubiquitin-like modifier protein (UBL) that is essential for proper cell polarization during the formation of mating projections in S. cerevisiae. Hub1 conjugation to the cell polarity factors Sph1 and Hbt1 was required for their proper subcellular localization (1). Hub1 belongs to a conserved family of eukaryotic proteins. S. cerevisiae and human Hub1 share 65% identity. The sequence identity with ubiquitin is 22%. Here we describe the solution structure of Hub1 determined by NMR spectroscopy. We compare the structure of Hub1 to ubiquitin and find that although the overall fold is almost identical, critical surface residues in ubiquitin are not conserved in Hub1. These differences probably reflect the different functions of the UBL Hub1.

Ramelot, Theresa A.(BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB); Cort, John R.(BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB); Yee, Adelinda (Ontario Cancer Institute) [Ontario Cancer Institute; Semsesi, Anthony (University of Toronto) [University of Toronto; Edwards, Aled M.(University of Toronto) [University of Toronto; Arrowsmith, Cheryl H.(9012) [9012; Kennedy, Michael A.(BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB)

2003-12-01T23:59:59.000Z

299

Mechanism of 'GSI oscillations' in electron capture by highly charged hydrogen-like atomic ions  

SciTech Connect (OSTI)

We suggest a qualitative explanation of oscillations in electron capture decays of hydrogen-like {sup 140}Pr and {sup 142}Pm ions observed recently in an ion experimental storage ring (ESR) of Gesellschaft fuer Schwerionenforschung (GSI) mbH, Darmstadt, Germany. This explanation is based on the electron multiphoton Rabi oscillations between two Zeeman states of the hyperfine ground level with the total angular momentum F = 1/2. The Zeeman splitting is produced by a constant magnetic field in the ESR. Transitions between these states are produced by the second, sufficiently strong alternating magnetic field that approximates realistic fields in the GSI ESR. The Zeeman splitting amounts to only about 10{sup -5} eV. This allows explaining the observed quantum beats with the period 7 s.

Krainov, V. P., E-mail: vpkrainov@mail.ru [Moscow Institute of Physics and Technology (Russian Federation)

2012-07-15T23:59:59.000Z

300

Detecting Sound-Wave-Like Surface Brightness Ripples in Cluster Cores  

E-Print Network [OSTI]

We investigate the observational requirements for the detection of sound-wave-like features in galaxy cluster cores. We calculate the effect of projection on the observed wave amplitude, and find that the projection factor depends only weakly on the underlying cluster properties but strongly on the wavelength of the sound waves, with the observed amplitude being reduced by a factor ~5 for 5 kpc waves but only by a factor ~ 2 for 25 kpc waves. We go on to estimate the time needed to detect ripples similar to those previously detected in the Perseus cluster in other clusters. We find that the detection time scales most strongly with the flux of the cluster and the amplitude of the ripples. By connecting the ripple amplitude to the heating power in the system, we estimate detection times for a selection of local clusters and find that several may have ripples detected with ~1Ms Chandra time.

J. Graham; A. C. Fabian; J. S. Sanders

2008-08-18T23:59:59.000Z

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301

Malignant hyperthermia-like reaction in a family with a sodium channel mutation at residue 1306  

SciTech Connect (OSTI)

Malignant hyperthermia susceptibility (MHS) is an autosomal dominant, hypermetabolic disorder, triggered by potent inhalational anesthetics. We have previously suggeste the skeletal muscle sodium channel {alpha}-subunit (SCN4A) as a gene candidate to explain some forms of MHS. To evaluate this gene for mutations that might lead to a MHS-like episode, we amplified genomic DNA by PCR and used SSCP to screen each exon. We studied multiple MHS families which may be linked to this gene. The proband and a sibling from one of these families suspected of having MHS experienced trismus and body rigidity after induction of anesthesia. The caffiene and halothane contracture test proved diagnostic in these individuals and EMG studies suggested a form of myotomia. A mutation co-segregating with the myotonia/MHS phenotype was found in the region of exon 22.

Vita, G.M.; Jedlicka, A.E.; Levitt, R.C. [Johns Hopkins Medical Institute, Baltimore, MD (United States)] [and others

1994-09-01T23:59:59.000Z

302

Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality  

E-Print Network [OSTI]

For precise measurements with polarized neutrons high efficient spin-manipulation is required. We developed several neutron optical elements suitable for a new sophisticated setup, i.e., DC spin-turners and Larmor-accelerators which diminish thermal disturbances and depolarisation considerably. The gain in performance is exploited demonstrating violation of a Bell-like inequality for a spin-path entangled single-neutron state. The obtained value of S=2.365(13), which is much higher than previous measurements by neutron interferometry, is 28 $\\sigma$ above the limit of S=2 predicted by contextual hidden variable theories. The new setup is more flexible referring to state preparation and analysis, therefore new, more precise measurements can be carried out.

Hermann Geppert; Tobias Denkmayr; Stephan Sponar; Hartmut Lemmel; Yuji Hasegawa

2014-04-14T23:59:59.000Z

303

Binding energy for hydrogen-like atoms in the Nelson model without cutoffs  

E-Print Network [OSTI]

In the Nelson model particles interact through a scalar massless field. For hydrogen-like atoms there is a nucleus of infinite mass and charge $Ze$, $Z > 0$, fixed at the origin and an electron of mass $m$ and charge $e$. This system forms a bound state with binding energy $E_{\\rm bin} = me^4Z^2/2$ to leading order in $e$. We investigate the radiative corrections to the binding energy and prove upper and lower bounds which imply that $ E_{\\rm bin} = me^4 Z^2/2 + c_0 e^6 + \\Ow(e^7 \\ln e)$ with explicit coefficient $c_0$ and independent of the ultraviolet cutoff. $c_0$ can be computed by perturbation theory, which however is only formal since for the Nelson Hamiltonian the smallest eigenvalue sits exactly at the bottom of the continuous spectrum.

Christian Hainzl; Masao Hirokawa; Herbert Spohn

2003-12-10T23:59:59.000Z

304

Bloch-like wave dynamics in disordered potentials based on supersymmetry  

E-Print Network [OSTI]

Bloch's theorem for the description of waves in crystals was a major milestone, establishing the principle of bandgaps for electrical, optical, and vibrational waves. Although it was once believed that bandgaps could form only under conditions of periodicity and long-range correlations as the prerequisites for Bloch's theorem, this restriction was disproven by the groundbreaking discoveries of amorphous media and quasicrystals. While network and liquid models have been suggested for the interpretation of Bloch-like waves in disordered media, these approaches 'searching' for random networks with bandgaps have failed in the deterministic creation of bandgaps. Here, we reveal a deterministic pathway to bandgap engineering in disordered media, by applying the notion of supersymmetry to the fundamental wave equation. Inspired by the problem for isospectrality, we follow a methodology in stark contrast to previous methods: we 'transform' ordered potentials into disordered potentials while 'preserving' bandgaps. Our...

Yu, Sunkyu; Hong, Jiho; Park, Namkyoo

2015-01-01T23:59:59.000Z

305

Measurement of electron neutrino CCQE-like cross-section in MINERvA  

E-Print Network [OSTI]

The electron-neutrino charged-current quasi-elastic (CCQE) cross-section on nuclei is an important input parameter to appearance-type neutrino oscillation experiments. Current experiments typically work from the muon neutrino cross-section and apply corrections from theoretical arguments to obtain a prediction for the electron neutrino cross-section, but to date there has been no experimental verification of the estimates for this channel at an energy scale appropriate to such experiments. We present a preliminary result from the MINERvA experiment on the first measurement of an exclusive reaction in few-GeV electron neutrino interactions, namely, the cross-section for a CCQE-like process. The result is given both as differential cross-sections vs. the electron energy, electron angle, and $Q^{2}$, as well as a total cross-section vs. neutrino energy.

Wolcott, Jeremy

2015-01-01T23:59:59.000Z

306

Asynchronous rotation of Earth-like planets in the habitable zone of lower-mass stars  

E-Print Network [OSTI]

Planets in the habitable zone of lower-mass stars are often assumed to be in a state of tidally synchronized rotation, which would considerably affect their putative habitability. Although thermal tides cause Venus to rotate retrogradely, simple scaling arguments tend to attribute this peculiarity to the massive Venusian atmosphere. Using a global climate model, we show that even a relatively thin atmosphere can drive terrestrial planets' rotation away from synchronicity. We derive a more realistic atmospheric tide model that predicts four asynchronous equilibrium spin states, two being stable, when the amplitude of the thermal tide exceeds a threshold that is met for habitable Earth-like planets with a 1-bar atmosphere around stars more massive than 0.5-0.7Msun. Thus, many recently discovered terrestrial planets could exhibit asynchronous spin-orbit rotation, even with a thin atmosphere.

Leconte, Jrmy; Menou, Kristen; Murray, Norman

2015-01-01T23:59:59.000Z

307

DC-like Phase Space Manipulation and Particle Acceleration Using Chirped AC Fields  

SciTech Connect (OSTI)

Waves in plasmas can accelerate particles that are resonant with the wave. A DC electric field also accelerates particles, but without a resonance discrimination, which makes the acceleration mechanism profoundly different. We investigate the effect on a Hamiltonian distribution of an accelerating potential waveform, which could, for example, represent the average ponderomotive effect of two counterpropagating electromagnetic waves. In particular, we examine the apparent DC-like time-asymptotic response of the distribution in regimes where the potential structure is accelerated adiabatically. A highly resonant population within the distribution is always present, and we characterize its nonadiabatic response during wave-particle resonance using an integral method in the noninertial reference frame moving with the wave. Finally, we show that in the limit of infinitely slow acceleration of the wave, these highly resonant particles disappear and the response

P.F. Schmit and N.J. Fisch

2009-06-17T23:59:59.000Z

308

Electron density diagnostic for hot plasmas in coronal regime by using B-like ions  

E-Print Network [OSTI]

Line ratio of $3d-2p$ transition lines in boron-like spectra of Si X, S XII, Ar XIV and Fe XXII has been investigated. Collisional-radiative model calculations reveal that the line ratio is sensitive to the electron density in ranges of $n_{\\rm e}=4.0\\times10^7-3.0\\times10^{10}$ cm$^{-3}$, $4.0\\times10^8-3.0\\times10^{11}$ cm$^{-3}$, $3.0\\times10^9-4.0\\times10^{12}$ cm$^{-3}$ and $2.0\\times10^{12}-3.0\\times10^{15}$ cm$^{-3}$, respectively. This complements the K-shell diagnostics of helium-like ions. By comparison between the prediction and the measured values, effective electron densities in the electron beam ion trap (EBIT) plasmas performed by Lepson and collaborators at Lawrence Livermore EBIT, are estimated to be $n_{\\rm e}=3.4^{+0.8}_{-0.6}\\times10^{10}$ cm$^{-3}$ and $5.6^{+1.0}_{-1.1}\\times10^{10}$ cm$^{-3}$ for sulphur and argon plasmas. In case of argon, a good agreement is shown with the actual electron density derived from N VI K-shell spectrum. We further explore the $3d-2p$ transition lines of Si X and S XII in the stellar coronal spectra measured with the Low Energy Transmission Grating Spectrometer combined with High Resolution Camera on board the {\\it Chandra X-ray Observatory}. The constrained electron densities show a good agreement with the those determined from C V and O VII K-shell spectra.

Guiyun Liang; Gang Zhao

2008-03-14T23:59:59.000Z

309

AP Theory III: Cone-like Graded SUSY, Dynamic Dark Energy and the YM Millenium Problem  

E-Print Network [OSTI]

Artin Presentation Theory, (AP Theory), is a new, direct infusion, via pure braid theory, of discrete group theory, (i.e., symmetry in its purest form), into the theory of {\\it smooth} 4-manifolds, (i.e.,$(3+1)$-Quantum Gravity in its purest topological form), thus exhibiting the most basic, rigorous, universal, model-free intrinsic {\\it gauge-gravity} duality in a non-infinitesimal, cone-like graded, as holographic as possible, model-independent, non-perturbative, background-independent, parameter-free manner. {\\it In AP Theory even smooth topology change becomes gauge-theoretic, setting the stage for a rigorous smooth topological $(3+1)$-QFT of Dynamic Dark Energy.} In this theory, the rigid $\\infty$ of the dimension of classical Hilbert space is substituted by the dynamic $\\infty$ of the $\\infty$ generation at each stage of a cone-like graded subgroup of topology-changing transitions/interactions. As a corollary, the Cosmological Constant problem and the YM Millenium Mass Gap problem, two of the most perplexing main problems of modern physics, become rigorously, intimately mathematically related, by having the same qualitative {\\it dynamical} roots. Ultimately our main point is meta-mathematical, as far as modern physics is concerned: due to the discrete group-theoretic conceptual simplicity of the theory, with its group-theoretic 'Planckian membrane/discreteness' starting point, {\\it the fact that it is not just a mere mathematical model,} and all its properties above, any other {\\it mathematically rigorous} approach has to built on AP Theory and be topologically absorbed and enveloped by it.

H. E. Winkelnkemper

2010-03-26T23:59:59.000Z

310

Change in Hamiltonian General Relativity from the Lack of a Time-like Killing Vector Field  

E-Print Network [OSTI]

In General Relativity in Hamiltonian form, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best, because the Hamiltonian is a sum of first-class constraints and a boundary term and thus supposedly generates gauge transformations. Attention to the gauge generator G of Rosenfeld, Anderson, Bergmann, Castellani et al., a specially tuned sum of first-class constraints, facilitates seeing that a solitary first-class constraint in fact generates not a gauge transformation, but a bad physical change in electromagnetism (changing E) or GR. The change spoils the Lagrangian constraints in terms of the physically relevant velocities rather than auxiliary canonical momenta. While Maudlin has defended change in GR much as G. E. Moore resisted skepticism, there remains a need to exhibit the technical flaws in the argument. Insistence on Hamiltonian-Lagrangian equivalence, a theme emphasized by Mukunda, Castellani, Sugano, Pons, Salisbury, Shepley and Sundermeyer among others, holds the key. Taking objective change to be ineliminable time dependence, there is change in vacuum GR just in case there is no time-like vector field satisfying Killing's equation. Throwing away the spatial dependence of GR for convenience, one finds that the time evolution from Hamilton's equations is real change just when there is no time-like Killing vector. Hence change is real and local even in the Hamiltonian formalism. The considerations here resolve the Earman-Maudlin standoff: the Hamiltonian formalism is helpful, and, suitably reformed, it does not have absurd consequences for change. Hence the classical problem of time is resolved, apart from the issue of observables, for which the solution is outlined. The quantum problem of time, however, is not automatically resolved due to issues of quantum constraint imposition.

J. Brian Pitts

2014-06-07T23:59:59.000Z

311

QU Car: a very high luminosity nova-like binary with a carbon-enriched companion  

E-Print Network [OSTI]

QU Car is listed in cataclysmic variable star catalogues as a nova-like variable. This little-studied, yet bright interacting binary is re-appraised here in the light of new high-quality ultraviolet (UV) interstellar line data obtained with STIS on board the Hubble Space Telescope. The detection of a component of interstellar absorption at a mean LSR velocity of $-$14 km s$^{-1}$ indicates that the distance to QU Car may be $\\sim$2 kpc or more -- a considerable increase on the previous lower-limiting distance of 500 pc. If so, the bolometric luminosity of QU Car could exceed $10^{37}$ ergs s$^{-1}$. This would place this binary in the luminosity domain occupied by known compact-binary supersoft X-ray sources. Even at a 500 pc, QU Car appears to be the most luminous nova-like variable known. New intermediate dispersion optical spectroscopy of QU Car spanning 3800--7000 \\AA is presented. These data yield the discovery that C{\\sc iv} $\\lambda\\lambda$5801,12 is present as an unusually prominent emission line in an otherwise low-contrast line spectrum. Using measurements of this and other lines in a recombination line analysis, it is shown that the C/He abundance as proxied by the n(C$^{4+}$)/n(He$^{2+}$) ratio may be as high as 0.06 (an order of magnitude higher than the solar ratio). Furthermore, the C/O abundance ratio is estimated to be greater than 1. These findings suggest that the companion in QU Car is a carbon star. If so, it would be the first example of a carbon star in such a binary. An early-type R star best matches the required abundance pattern and could escape detection at optical wavelengths provided the distance to QU Car is $\\sim$2 kpc or more.

J. E. Drew; L. E. Hartley; K. S. Long; J. van der Walt

2002-09-16T23:59:59.000Z

312

Spatially resolved measurements of kinematics and flow-induced birefringence in worm-like micellar solutions undergoing high rate deformations  

E-Print Network [OSTI]

Worm-like micellar solutions are model non-Newtonian systems on account of their well understood linear viscoelastic behavior. Their high deformation rate, non-linear rheological response, however, remains inadequately ...

Ober, Thomas J. (Thomas Joseph)

2010-01-01T23:59:59.000Z

313

E-Print Network 3.0 - ag-like 4d104f 4d105 Sample Search Results  

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

Hot Pepper Summary: , at least 17 AGL (for AG-Like) genes have been isolated (Ma et al., 1991; Mandel and Yanofsky, 1995 Source: An, Gynheung - Department of Life Science, Pohang...

314

BUSINESS ANALYTICS CONCENTRATION FOR UNDERGRADUATES The business analytics concentration, like a major, focuses on using information to develop business  

E-Print Network [OSTI]

their business models. Possible Job Titles Data scientist, business analytics specialist, customer relationshipBUSINESS ANALYTICS CONCENTRATION FOR UNDERGRADUATES The business analytics concentration, like a major, focuses on using information to develop business insights and influence decision

Salama, Khaled

315

A Bug You Like: A Framework for Automated Assignment of Bugs Olga Baysal Michael W. Godfrey Robin Cohen  

E-Print Network [OSTI]

A Bug You Like: A Framework for Automated Assignment of Bugs Olga Baysal Michael W. Godfrey Robin to determine appropriate experts to work on given elements of software projects. Unlike this previous work

Godfrey, Michael W.

316

High yield production of inorganic graphene-like materials (MoS?, WS?, BN) through liquid exfoliation testing key parameters  

E-Print Network [OSTI]

Inorganic graphene-like materials such as molybdenum disulfide (MoS?), tungsten sulfide (WS?), and boron nitride (BN) are known to have electronic properties. When exfoliated into layers and casted onto carbon nanofilms, ...

Pu, Fei, S.B. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

317

Physicochemical characterization of PEG-based comb-like amphiphilic copolymer structures for possible imaging and therapeutic applications  

E-Print Network [OSTI]

Comb-like copolymer structures, also known as graft/comb copolymers, have obtained a significant amount of attention in biomedical and industrial applications because of their unique compositional flexibility, which can ...

Dawson, Jin Zhou

2008-01-01T23:59:59.000Z

318

Emotional intelligence and manipulation: Are those scoring higher on EI measures more likely to negatively manipulate others' for personal gains?  

E-Print Network [OSTI]

The association between emotional intelligence (EI) and manipulation was examined in this study. The possibility that individuals who score higher on EI would be more likely to negatively manipulate others for personal gain was the main hypothesis...

Carter, Sophie

2013-01-01T23:59:59.000Z

319

Precipitation of amorphous CaCO3 (aragonite-like) by cyanobacteria: A STXM study of the influence of EPS  

E-Print Network [OSTI]

of EPS on the nucleation process M. Obst a,b,*,1 , J.J. Dynes b,c , J.R. Lawrence c , G.D.W. Swerhone c substances (EPS) produced by the cyanobacteria very close to the cell wall. The aragonite-like CaCO3-like CaCO3 pre- cipitated in the EPS was dependent on the nutrient supply during bacterial growth. Higher

Hitchcock, Adam P.

320

Interaction of osteoblast-like cells with serum and fibronectin: effects on cell motility and proliferation in vitro  

SciTech Connect (OSTI)

Osteoblast migration and proliferation are believed to occur during bone remodelling, in particular after osteoclastic bone resorption and prior to osteoblastic bone formation. In order to study migration and proliferation in vitro, the model of Alessandri et al. (1983) was modified. The model entailed seeding osteoblast-like cells into wells cut in agar and quantifying migration and proliferation peripheral to the well. Cell morphology also was described. The data indicated that on growth surfaces enriched with varying concentrations of fetal calf serum (FSC), the quantification of migration and proliferation was related both to percent cell attachment and to FCS-concentration. Because few osteoblast-like cells incorporated (/sup 3/H-TdR), it was concluded that the appearance of cells peripheral to the well was due to migration, and not to proliferation. Cell morphology and myosin distribution and organization indicated that osteoblast-like cells at the periphery of the cell culture (i.e. leading edge) may have been directionally migrating whereas cells behind the leading edge may have been engaged in non-directional migration. The migration, proliferation, and morphology of osteoblast-like cells cultured on fibronectin (FN) enriched growth surfaces also was examined. The quantification of migration and proliferation was related to the FN-concentration applied to the growth surface. Because few osteoblast-like cells incorporated /sup 3/H-TdR and cell morphology indicated migration, it was concluded that osteoblast-like cells on FN-enriched growth surfaces are specialized, in part, for migration.

Zuk, A.

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" 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

Particle in cell simulations of tearing modes in reversed-field-pinch-like plasma  

SciTech Connect (OSTI)

Particle in cell (PIC) simulations of tearing modes in two-dimensional plane geometry in a force free reversed field pinch (RFP) like plasma equilibrium are performed to study possible kinetic effects on these modes in RFPs. Linear tearing modes are compared in the PIC and two fluid models. The results showed that the growth rates and the profiles of magnetic field components in the two models are very similar, indicating that the kinetic effects on the tearing modes are weak such that the two fluid approximation is rather accurate for modeling these instabilities in RFPs. During the nonlinear evolution of the tearing mode in this geometry small scale secondary instabilities located near the internal layer of the primary tearing instability are excited. These secondary instabilities appear to be driven by the nonlinearly induced local pressure gradient in the regions of unfavorable curvature of the nonlinearly evolved magnetic field. They could also appear in a realistic RFP geometry and play a role during sawtooth crashes in these machines.

Svidzinski, Vladmir [Los Alamos National Laboratory; Li, Hui [Los Alamos National Laboratory; Albright, Brian [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

322

Extended space expectation values of position related operators for hydrogen-like quantum system evolutions  

SciTech Connect (OSTI)

The expectation value definitions over an extended space from the considered Hilbert space of the system under consideration is given in another paper of the second author in this symposium. There, in that paper, the conceptuality rather than specification is emphasized on. This work uses that conceptuality to investigate the time evolutions of the position related operators' expectation values not in its standard meaning but rather in a new version of the definition over not the original Hilbert space but in the space obtained by extensions via introducing the images of the given initial wave packet under the positive integer powers of the system Hamiltonian. These images may not be residing in the same space of the initial wave packet when certain singularities appear in the structure of the system Hamiltonian. This may break down the existence of the integrals in the definitions of the expectation values. The cure is the use of basis functions in the abovementioned extended space and the sandwiching of the target operator whose expectation value is under questioning by an appropriately chosen operator guaranteeing the existence of the relevant integrals. Work specifically focuses on the hydrogen-like quantum systems whose Hamiltonians contain a polar singularity at the origin.

Kalay, Berfin; Demiralp, Metin [?stanbul Technical University, Informatics Institute, Maslak, 34469, ?stanbul (Turkey)

2014-10-06T23:59:59.000Z

323

Prediction of buried mine-like target radar signatures using wideband electromagnetic modeling  

SciTech Connect (OSTI)

Current ground penetrating radars (GPR) have been tested for land mine detection, but they have generally been costly and have poor performance. Comprehensive modeling and experimentation must be done to predict the electromagnetic (EM) signatures of mines to access the effect of clutter on the EM signature of the mine, and to understand the merit and limitations of using radar for various mine detection scenarios. This modeling can provide a basis for advanced radar design and detection techniques leading to superior performance. Lawrence Livermore National Laboratory (LLNL) has developed a radar technology that when combined with comprehensive modeling and detection methodologies could be the basis of an advanced mine detection system. Micropower Impulse Radar (MIR) technology exhibits a combination of properties, including wideband operation, extremely low power consumption, extremely small size and low cost, array configurability, and noise encoded pulse generation. LLNL is in the process of developing an optimal processing algorithm to use with the MIR sensor. In this paper, we use classical numerical models to obtain the signature of mine-like targets and examine the effect of surface roughness on the reconstructed signals. These results are then qualitatively compared to experimental data.

Warrick, A.L.; Azevedo, S.G.; Mast, J.E.

1998-04-06T23:59:59.000Z

324

Preparations and characterizations of novel graphite-like materials and some high oxidation state fluorine chemistry  

SciTech Connect (OSTI)

Novel graphite-like materials, BC{sub x} (6>x{ge}3), have been prepared using BCl{sub 3} and C{sub 6}H{sub 6} at 800--1000C, and C{sub x}N (14>x{ge}5) have been synthesized using C{sub 5}H{sub 5}N and Cl{sub 2} at 680C--986C. Bulk and thin film characterization were used to study the structure and bonding in these solids. C{sub 8}K(NH{sub 3}){sub 1.1} was prepared by reacting C{sub 8}K with gaseous NH{sub 3}. The carbon sub-lattice is hexagonal: a = 2.47 {Angstrom}, c = 6.47 {Angstrom}. The smaller a parameter and lower conductivity are attributed to smaller electron transfer from K to the conduction band solvation of K by NH{sub 3}. A simplified liquid phase method for synthesizing Li-graphite intercalation compounds has been developed; synthesis of a lamellar mixed conductor, C{sub x}{sup +}Li{sub 2}N{sup {minus}}, has been attempted. Stability and conductivity of (BN){sub 3}SO{sub 3}F have been studied; it was shown to be metallic with a specific conductivity of 1.5 S{center_dot}cm{sup {minus}1}. Its low conductivity is attributed to the low mobility of holes in BN sheets.

Shen, Ciping

1992-11-01T23:59:59.000Z

325

Space-like Dp branes: accelerating cosmologies versus conformally de Sitter space-time  

E-Print Network [OSTI]

We consider the space-like D$p$ brane solutions of type II string theories having isometries ISO$(p+1)$ $\\times$ SO$(8-p,1)$. These are asymptotically flat solutions or in other words, the metrics become flat at the time scale $\\tau \\gg \\tau_0$. On the other hand, when $\\tau \\sim \\tau_0$, we get $(p+1)+1$ dimensional flat FLRWmetrics upon compactification on a $(8-p)$ dimensional hyperbolic space with time dependent radii. We show that the resultant $(p+1)+1$ dimensional metrics describe transient accelerating cosmologies for all $p$ from 1 to 6, i.e., from $(2+1)$ to $(7+1)$ space-time dimensions. We show how the acceleration changes with the interplay of the various parameters characterizing the solutions in $(3+1)$ dimensions. Finally, for $\\tau \\ll \\tau_0$, after compactification on $(8-p)$ dimensional hyperbolic space, the resultant metrics are shown to take the form of $(p+1)+1$ dimensional de Sitter spaces upto a conformal transformation. Cosmologies here are decelerating, but, only in a particular conformal frame we get eternal acceleration.

Kuntal Nayek; Shibaji Roy

2014-11-10T23:59:59.000Z

326

THE ASSEMBLY OF MILKY-WAY-LIKE GALAXIES SINCE z {approx} 2.5  

SciTech Connect (OSTI)

Galaxies with the mass of the Milky Way dominate the stellar mass density of the universe but it is uncertain how and when they were assembled. Here we study progenitors of these galaxies out to z = 2.5, using data from the 3D-HST and CANDELS Treasury surveys. We find that galaxies with present-day stellar masses of log (M) Almost-Equal-To 10.7 built {approx}90% of their stellar mass since z = 2.5, with most of the star formation occurring before z = 1. In marked contrast to the assembly history of massive elliptical galaxies, mass growth is not limited to large radii: the mass in the central 2 kpc of the galaxies increased by a factor of 3.2{sup +0.8}{sub -0.7} between z = 2.5 and z = 1. We therefore rule out simple models in which bulges were fully assembled at high redshift and disks gradually formed around them. Instead, bulges (and black holes) likely formed in lockstep with disks, through bar instabilities, migration, or other processes. We find that after z = 1 the growth in the central regions gradually stopped and the disk continued to be built up, consistent with recent studies of the gas distributions in z {approx} 1 galaxies and the properties of many spiral galaxies today.

Van Dokkum, Pieter G.; Leja, Joel; Nelson, Erica June; Skelton, Rosalind E.; Momcheva, Ivelina [Department of Astronomy, Yale University, New Haven, CT 06511 (United States); Patel, Shannon; Fumagalli, Mattia; Franx, Marijn; Labbe, Ivo [Leiden Observatory, Leiden University, Leiden (Netherlands); Brammer, Gabriel [European Southern Observatory, Alonson de Cordova 3107, Casilla 19001, Vitacura, Santiago (Chile); Whitaker, Katherine E. [Astrophysics Science Division, Goddard Space Center, Greenbelt, MD 20771 (United States); Lundgren, Britt [Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706 (United States); Conroy, Charlie [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA (United States); Foerster Schreiber, Natascha; Wuyts, Stijn [Max-Planck-Institut fuer extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany); Kriek, Mariska [Department of Astronomy, University of California, Berkeley, CA 94720 (United States); Marchesini, Danilo [Department of Physics and Astronomy, Tufts University, Medford, MA 02155 (United States); Rix, Hans-Walter; Van der Wel, Arjen [Max Planck Institute for Astronomy (MPIA), Koenigstuhl 17, D-69117 Heidelberg (Germany)

2013-07-10T23:59:59.000Z

327

Comparison of ICRF and NBI heated plasmas performances in the JET ITER-like wall  

SciTech Connect (OSTI)

During the initial operation of the JET ITER-like wall, particular attention was given to the characterization of the Ion Cyclotron Resonance Frequency (ICRF) heating in this new metallic environment. In this contribution we compare L-modes plasmas heated by ICRF or by Neutral Beam Injection (NBI). ICRF heating as expected led to a much higher centrally peaked power deposition on the electrons and due to the central fast ion population to stronger sawtooth activity. Surprisingly, although a higher bulk radiation was observed during the ICRF phase, the thermal plasma energy was found similar for both cases, showing that a higher radiation inside the separatrix was not incompatible with an efficient central heating scheme. The higher radiation was attributed to the presence Tungsten (W). Tomographic inversion of SXR emissions allowed a precise observation of the sawtooth effect on the radiation pattern. W concentration profiles deconvolved from SXR emission showed the flattening of the profiles due to sawtooth for both heating and the peaking of the profiles in the NBI case only hinting for extra transport effect in the ICRF case.

Mayoral, M.-L. [EFDA Close Support Unit, Garching, Germany and Euratom/CCFE Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Ptterich, T.; Bobkov, V. [Max-Planck-Institut fr Plasmaphysik, EURATOM-Assoziation, Garching (Germany); Jacquet, P. [Euratom/CCFE Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Lerche, E.; Van-Eester, D.; Bourdelle, C.; Colas, L. [CEA, IRFM, F-13108 Saint-Paul-Lez-Durance (France); Czarnecka, A. [Association Euratom-IPPLM, Hery 23, 01-497 Warsaw (Poland); Mlynar, J. [Association Euratom-IPP.CR, Institute of Plasma Physics AS CR, 18200 Prague (Czech Republic); Neu, R. [EFDA Close Support Unit, Garching, Germany and Max-Planck-Institut fr Plasmaphysik, EURATOM-Assoziation, Garching (Germany); Collaboration: JET-EFDA Contributors

2014-02-12T23:59:59.000Z

328

New Bounds for Axions and Axion-Like Particles with keV-GeV Masses  

E-Print Network [OSTI]

We give updated constraints on hypothetical light bosons with a two-photon coupling such as axions or axion-like particles (ALPs). We focus on masses and lifetimes where decays happen near big bang nucleosynthesis (BBN), thus altering the baryon-to-photon ratio and number of relativistic degrees of freedom between the BBN epoch and the cosmic microwave background (CMB) last scattering epoch, in particular such that $N_{\\rm eff}^{\\rm CMB} 3\\sigma$ by the combination of CMB+D/H measurements if only ALPs and three thermalized neutrino species contribute to $N_{\\rm eff}$. The bound relaxes if there are additional light degrees of freedom present which, in this scenario, have their contribution limited to $\\Delta N_{\\rm eff}=1.1\\pm0.3$. We give forecasts showing that a number of experiments are expected to reach the sensitivity needed to further test this region, such as Stage-IV CMB and SUPER-KEKB, the latter a direct test insensitive to any extra degrees of freedom.

Millea, Marius; Fields, Brian

2015-01-01T23:59:59.000Z

329

Method for loading lipid like vesicles with drugs of other chemicals  

DOE Patents [OSTI]

A method for accumulating drugs or other chemicals within synthetic, lipid-like vesicles by means of a pH gradient imposed on the vesicles just prior to use is described. The method is suited for accumulating molecules with basic or acid moieties which are permeable to the vesicles membranes in their uncharged form and for molecules that contain charge moieties that are hydrophobic ions and can therefore cross the vesicle membranes in their charged form. The method is advantageous over prior art methods for encapsulating biologically active materials within vesicles in that is achieves very high degrees of loading with simple procedures that are economical and require little technical expertise, furthermore kits which can be stored for prolonged periods prior to use without impairment of the capacity to achieve drug accumulation are described. A related application of the method consists of using this technology to detoxify animals that have been exposed to poisons with basic, weak acid or hydrophobic charge groups within their molecular structures. 2 figs.

Mehlhorn, R.J.

1998-06-09T23:59:59.000Z

330

Method for loading lipid like vesicles with drugs of other chemicals  

DOE Patents [OSTI]

A method for accumulating drugs or other chemicals within synthetic, lipid-like vesicles by means of a pH gradient imposed on the vesicles just prior to use is described. The method is suited for accumulating molecules with basic or acid moieties which are permeable to the vesicles membranes in their uncharged form and for molecules that contain charge moieties that are hydrophobic ions and can therefore cross the vesicle membranes in their charged form. The method is advantageous over prior art methods for encapsulating biologically active materials within vesicles in that is achieves very high degrees of loading with simple procedures that are economical and require little technical expertise, furthermore kits which can be stored for prolonged periods prior to use without impairment of the capacity to achieve drug accumulation are described. A related application of the method consists of using this technology to detoxify animals that have been exposed to poisons with basic, weak acid or hydrophobic charge groups within their molecular structures.

Mehlhorn, Rolf Joachim (Richmond, CA)

1998-01-01T23:59:59.000Z

331

Solar-like oscillations with low amplitude in the CoRoT target HD 181906  

E-Print Network [OSTI]

Context: The F8 star HD 181906 (effective temperature ~6300K) was observed for 156 days by the CoRoT satellite during the first long run in the centre direction. Analysis of the data reveals a spectrum of solar-like acoustic oscillations. However, the faintness of the target (m_v=7.65) means the signal-to-noise (S/N) in the acoustic modes is quite low, and this low S/N leads to complications in the analysis. Aims: To extract global variables of the star as well as key parameters of the p modes observed in the power spectrum of the lightcurve. Methods: The power spectrum of the lightcurve, a wavelet transform and spot fitting have been used to obtain the average rotation rate of the star and its inclination angle. Then, the autocorrelation of the power spectrum and the power spectrum of the power spectrum were used to properly determine the large separation. Finally, estimations of the mode parameters have been done by maximizing the likelihood of a global fit, where several modes were fit simultaneously. Resu...

Garca, R A; Samadi, R; Ballot, J; Barban, C; Benomar, O; Chaplin, W J; Gaulme, P; Appourchaux, T; Mathur, S; Mosser, B; Toutain, T; Verner, G A; Auvergne, M; Baglin, A; Baudin, F; Boumier, P; Bruntt, H; Catala, C; Deheuvels, S; Elsworth, Y; Jimnez-Reyes, S J; Michel, E; Hernandez, F Perez; Roxburgh, I W; Salabert, D

2009-01-01T23:59:59.000Z

332

The solar-like CoRoT target HD 170987: spectroscopic and seismic observations  

E-Print Network [OSTI]

The CoRoT mission is in its third year of observation and the data from the second long run in the galactic centre direction are being analysed. The solar-like oscillating stars that have been observed up to now have given some interesting results, specially concerning the amplitudes that are lower than predicted. We present here the results from the analysis of the star HD 170987.The goal of this research work is to characterise the global parameters of HD 170987. We look for global seismic parameters such as the mean large separation, maximum amplitude of the modes, and surface rotation because the signal-to-noise ratio in the observations do not allow us to measure individual modes. We also want to retrieve the stellar parameters of the star and its chemical composition.We have studied the chemical composition of the star using ground-based observations performed with the NARVAL spectrograph. We have used several methods to calculate the global parameters from the acoustic oscillations based on CoRoT data....

Mathur, S; Catala, C; Bruntt, H; Mosser, B; Appourchaux, T; Ballot, J; Creevey, O L; Gaulme, P; Hekker, S; Huber, D; Karoff, C; Piau, L; Regulo, C; Roxburgh, I W; Salabert, D; Verner, G A; Auvergne, M; Baglin, A; Chaplin, W J; Elsworth, Y; Michel, E; Samadi, R; Sato, K; Stello, D

2010-01-01T23:59:59.000Z

333

Short-lived spots in solar-like stars as observed by CoRoT  

E-Print Network [OSTI]

Context. CoRoT light curves have an unprecedented photometric quality, having simultaneously a high signal-to-noise ratio, a long time span and a nearly continuous duty-cycle. Aims. We analyse the light-curves of four bright targets observed in the seismology field and study short-lived small spots in solar-like stars. Methods. We present a simple spot modeling by iterative analysis. Its ability to extract relevant parameters is ensured by implementing relaxation steps to avoid convergence to local minima of the sum of the residuals between observations and modeling. The use of Monte-Carlo simulations allows us to estimate the performance of the fits. Results. Our starspot modeling gives a representation of the spots on these stars in agreement with other well tested methods. Within this framework, parameters such as rigid-body rotation and spot lifetimes seem to be precisely determined. Then, the lifetime/rotation period ratios are in the range 0.5 - 2, and there is clear evidence for differential rotation.

Mosser, B; Lanza, A F; Hulot, J C; Catala, C; Baglin, A; Auvergne, M

2009-01-01T23:59:59.000Z

334

HD 46375: seismic and spectropolarimetric analysis of a young Sun hosting a Saturn-like planet  

E-Print Network [OSTI]

HD 46375 is known to host a Saturn-like exoplanet orbiting at 0.04 AU from its host star. Stellar light reflected by the planet was tentatively identified in the 34-day CoRoT run acquired in October-November 2008. We constrain the properties of the magnetic field of HD 46375 based on spectropolarimetric observations with the NARVAL spectrograph at the Pic du Midi observatory. In addition, we use a high-resolution NARVAL flux spectrum to contrain the atmospheric parameters. With these constraints, we perform an asteroseismic analysis and modelling of HD 46375 using the frequencies extracted from the CoRoT light curve. We used Zeeman Doppler imaging to reconstruct the magnetic map of the stellar surface. In the spectroscopic analysis we fitted isolated lines using 1D LTE atmosphere models. This analysis was used to constrain the effective temperature, surface gravity, and chemical composition of the star. To extract information about the p-mode oscillations, we used a technique based on the envelope autocorrela...

Gaulme, P; Weiss, W W; Mosser, B; Moutou, C; Bruntt, H; Donati, J -F; Vannier, M; Guillot, T; Appourchaux, T; Michel, E; Auvergne, M; Samadi, R; Baudin, F; Catala, C; Baglin, A; 10.1051/0004-6361/201014142

2010-01-01T23:59:59.000Z

335

Toroidal vs. poloidal magnetic fields in Sun-like stars: a rotation threshold  

E-Print Network [OSTI]

From a set of stellar spectropolarimetric observations, we report the detection of surface magnetic fields in a sample of four solar-type stars, namely HD 73350, HD 76151, HD 146233 and HD 190771. Assuming that the observed variability of polarimetric signal is controlled by stellar rotation, we establish the rotation periods of our targets, with values ranging from 8.8 d (for HD 190771) to 22.7 d (for HD 146233). Apart from rotation, fundamental parameters of the selected objects are very close to the Sun's, making this sample a practical basis to investigate the specific impact of rotation on magnetic properties of Sun-like stars. We reconstruct the large-scale magnetic geometry of the targets as a low-order (l<10) spherical harmonics expansion of the surface magnetic field. From the set of magnetic maps, we draw two main conclusions. (a) The magnetic energy of the large-scale field increases with rotation rate. The increase of chromospheric emission with the mean magnetic field is flatter than observed ...

Petit, P; Solanki, SK; Donati, J-F; Aurire, M; Lignires, F; Morin, J; Paletou, F; Ramrez, J; Catala, C; Fares, R

2008-01-01T23:59:59.000Z

336

Video Analysis and Modeling Performance Task to promote becoming like scientists in classrooms  

E-Print Network [OSTI]

This paper aims to share the use of Tracker a free open source video analysis and modeling tool that is increasingly used as a pedagogical tool for the effective learning and teaching of Physics for Grade 9 Secondary 3 students in Singapore schools to make physics relevant to the real world. We discuss the pedagogical use of Tracker, guided by the Framework for K-12 Science Education by National Research Council, USA to help students to be more like scientists. For a period of 6 to 10 weeks, students use a video analysis coupled with the 8 practices of sciences such as 1. Ask question, 2. Use models, 3. Plan and carry out investigation, 4. Analyse and interpret data, 5. Use mathematical and computational thinking, 6. Construct explanations, 7. Argue from evidence and 8. Communicate information. This papers focus in on discussing some of the performance task design ideas such as 3.1 flip video, 3.2 starting with simple classroom activities, 3.3 primer science activity, 3.4 integrative dynamics and kinematics l...

Wee, Loo Kang

2015-01-01T23:59:59.000Z

337

One-loop energy-momentum tensor in QED with electric-like background  

E-Print Network [OSTI]

We have obtained nonperturbative one-loop expressions for the mean energy-momentum tensor and current density of Dirac's field on a constant electric-like background. One of the goals of this calculation is to give a consistent description of back-reaction in such a theory. Two cases of initial states are considered: the vacuum state and the thermal equilibrium state. First, we perform calculations for the vacuum initial state. In the obtained expressions, we separate the contributions due to particle creation and vacuum polarization. The latter contributions are related to the Heisenberg-Euler Lagrangian. Then, we study the case of the thermal initial state. Here, we separate the contributions due to particle creation, vacuum polarization, and the contributions due to the work of the external field on the particles at the initial state. All these contributions are studied in detail, in different regimes of weak and strong fields and low and high temperatures. The obtained results allow us to establish restrictions on the electric field and its duration under which QED with a strong constant electric field is consistent. Under such restrictions, one can neglect the back-reaction of particles created by the electric field. Some of the obtained results generalize the calculations of Heisenberg-Euler for energy density to the case of arbitrary strong electric fields.

S. P. Gavrilov; D. M. Gitman

2012-06-30T23:59:59.000Z

338

Hints for an axion-like particle from PKS 1222+216?  

E-Print Network [OSTI]

Flat spectrum radio quasars (FSRQs) are a particular class of blazars rich of optical/ultraviolet photons inside the broad line region (BLR), necessarily implying a huge optical depth for $\\gamma$ rays above 20 GeV. As a consequence, photons with energy above such a threshold should not be emitted. However, photons in the energy range 70 - 400 GeV have been observed by MAGIC from the FSRQ PKS 1222+216. Several astrophysical explanations exist in the literature, but they are all ad hoc, namely devised only for that specific purpose. We show that such a surprising discovery can be explained within standard blazar models by adding the new possibility that photons oscillate into axion-like particles (ALPs) and vice-versa inside the source. Through the photon-ALP oscillation mechanism a sizable fraction of very-high energy (VHE) photons can escape absorption from the BLR in a similar fashion as they largely avoid absorption from the extragalactic background light (EBL) in the intergalactic space. Actually, we show that not only are VHE photon indeed emitted, but also that their spectral energy distribution (SED) is such that they lie on the same Compton peak to which also lower energy photons simultaneously detected by Fermi/LAT belong.

Giorgio Galanti; Marco Roncadelli; Fabrizio Tavecchio; Giacomo Bonnoli

2014-09-15T23:59:59.000Z

339

Dark energy and Chern-Simons like gravity from a dynamical four-form  

E-Print Network [OSTI]

We consider the dynamics of a four-form field $\\tilde {w} $, treating it as a distinct physical degree of freedom, independent of the metric. The equations of motion are derived from an action which, besides having the standard Hilbert-Einstein term and the matter part, consists of a new action for $\\tilde {w} $. The evolution of $\\tilde {w} $ in a flat FRW universe is studied, and it is shown that the parameters of the theory admit solutions wherein it is possible to have an equation of state $p_\\phi \\approx -\\epsilon_\\phi $, so that it leads to an accelerating universe. We also put forward electromagnetic as well as gravitational `Chern-Simons' like terms that arise naturally in 4D, entailing a modified Einstein-Maxwell equation and an enlarged system of Einstein equation involving a Cotton tensor. We demonstrate that the scalar-density associated with $\\tilde {w} $ can be employed to construct a generalized exterior derivative that converts a p-form density to a (p+1)-form density of identical weight.

Patrick Das Gupta

2011-12-02T23:59:59.000Z

340

Efficient protocols for deterministic secure quantum communication using GHZ-like states  

E-Print Network [OSTI]

Two protocols for deterministic secure quantum communication (DSQC) using GHZ-like states have been proposed. It is shown that one of these protocols can be modified to an equivalent but more efficient protocol of quantum secure direct communication (QSDC). Security and efficiency of the proposed protocols are analyzed in detail and are critically compared with the existing protocols. It is shown that the proposed protocols are highly efficient. It is also shown that all the physical systems where dense coding is possible can be used to design maximally efficient protocol of DSQC and QSDC. Further, it is shown that dense coding is sufficient but not essential for DSQC and QSDC protocols of the present kind. We have shown that there exist a large class of quantum state which can be used to design maximally efficient DSQC and QSDC protocols of the present kind. It is further, observed that maximally efficient QSDC protocols are more efficient than their DSQC counterparts. This additional efficiency arises at the cost of message transmission rate.

Anindita Banerjee; Anirban Pathak

2012-01-18T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" 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

DETECTION OF SOLAR-LIKE OSCILLATIONS FROM KEPLER PHOTOMETRY OF THE OPEN CLUSTER NGC 6819  

SciTech Connect (OSTI)

Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance, and initial chemical composition allows strong tests of the theory of stellar evolution. We report results from the first 34 days of science data from the Kepler Mission for the open cluster NGC 6819-one of the four clusters in the field of view. We obtain the first clear detections of solar-like oscillations in the cluster red giants and are able to measure the large frequency separation, {delta}{nu}, and the frequency of maximum oscillation power, {nu}{sub max}. We find that the asteroseismic parameters allow us to test cluster membership of the stars, and even with the limited seismic data in hand, we can already identify four possible non-members despite their having a better than 80% membership probability from radial velocity measurements. We are also able to determine the oscillation amplitudes for stars that span about 2 orders of magnitude in luminosity and find good agreement with the prediction that oscillation amplitudes scale as the luminosity to the power of 0.7. These early results demonstrate the unique potential of asteroseismology of the stellar clusters observed by Kepler.

Stello, Dennis; Bedding, Timothy R.; Huber, Daniel [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Bruntt, Hans; Mosser, BenoIt; Barban, Caroline; Goupil, Marie-Jo [LESIA, CNRS, Universite Pierre et Marie Curie, Universite Denis Diderot, Observatoire de Paris, 92195 Meudon (France); Stevens, Ian R.; Chaplin, William J.; Elsworth, Yvonne P.; Hekker, Saskia [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Brown, Timothy M. [Las Cumbres Observatory Global Telescope, Goleta, CA 93117 (United States); Christensen-Dalsgaard, Joergen; Kjeldsen, Hans; Arentoft, Torben [Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C (Denmark); Gilliland, Ronald L. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Ballot, Jerome [Laboratoire d'Astrophysique de Toulouse-Tarbes, Universite de Toulouse, CNRS, 14 av E. Belin, 31400 Toulouse (France); GarcIa, Rafael A. [Laboratoire AIM, CEA/DSM-CNRS, Universite Paris 7 Diderot, IRFU/SAp, Centre de Saclay, 91191 Gif-sur-Yvette (France); Mathur, Savita [Indian Institute of Astrophysics, Koramangala, Bangalore 560 034 (India)] (and others)

2010-04-20T23:59:59.000Z

342

CALIBRATING CONVECTIVE PROPERTIES OF SOLAR-LIKE STARS IN THE KEPLER FIELD OF VIEW  

SciTech Connect (OSTI)

Stellar models generally use simple parameterizations to treat convection. The most widely used parameterization is the so-called mixing-length theory where the convective eddy sizes are described using a single number, {alpha}, the mixing-length parameter. This is a free parameter, and the general practice is to calibrate {alpha} using the known properties of the Sun and apply that to all stars. Using data from NASA's Kepler mission we show that using the solar-calibrated {alpha} is not always appropriate, and that in many cases it would lead to estimates of initial helium abundances that are lower than the primordial helium abundance. Kepler data allow us to calibrate {alpha} for many other stars and we show that for the sample of stars we have studied, the mixing-length parameter is generally lower than the solar value. We studied the correlation between {alpha} and stellar properties, and we find that {alpha} increases with metallicity. We therefore conclude that results obtained by fitting stellar models or by using population-synthesis models constructed with solar values of {alpha} are likely to have large systematic errors. Our results also confirm theoretical expectations that the mixing-length parameter should vary with stellar properties.

Bonaca, Ana; Tanner, Joel D.; Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Chaplin, William J.; Metcalfe, Travis S.; Christensen-Dalsgaard, Jorgen; Garcia, Rafael A.; Mathur, Savita [Kavli Institute for Theoretical Physics, Kohn Hall, University of California, Santa Barbara, CA 93106 (United States); Monteiro, Mario J. P. F. G.; Campante, Tiago L. [Centro de Astrofisica and Faculdade de Ciencias, Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal); Ballot, Jerome [CNRS, Institut de Recherche en Astrophysique et Planetologie, 14 avenue Edouard Belin, F-31400 Toulouse (France); Bedding, Timothy R.; Corsaro, Enrico [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Bonanno, Alfio [INAF-Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123 Catania (Italy); Broomhall, Anne-Marie; Elsworth, Yvonne [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom); Bruntt, Hans; Karoff, Christoffer; Kjeldsen, Hans [Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Hekker, Saskia, E-mail: ana.bonaca@yale.edu, E-mail: sarbani.basu@yale.edu, E-mail: joel.tanner@yale.edu [Astronomical Institute Anton Pannekoek, University of Amsterdam, Science Park 904, 1098-XH Amsterdam (Netherlands); and others

2012-08-10T23:59:59.000Z

343

Insulin-like growth factor 1 enhances the migratory capacity of mesenchymal stem cells  

SciTech Connect (OSTI)

Mesenchymal stem cells (MSCs) are attractive candidates for cell based therapies. However, the mechanisms responsible for stem cell migration and homing after transplantation remain unknown. It has been shown that insulin-like growth factor-1 (IGF-1) induces proliferation and migration of some cell types, but its effects on stem cells have not been investigated. We isolated and cultured MSC from rat bone marrow, and found that IGF-1 increased the expression levels of the chemokine receptor CXCR4 (receptor for stromal cell-derived factor-1, SDF-1). Moreover, IGF-1 markedly increased the migratory response of MSC to SDF-1. The IGF-1-induced increase in MSC migration in response to SDF-1 was attenuated by PI3 kinase inhibitor (LY294002 and wortmannin) but not by mitogen-activated protein/ERK kinase inhibitor PD98059. Our data indicate that IGF-1 increases MSC migratory responses via CXCR4 chemokine receptor signaling which is PI3/Akt dependent. These findings provide a new paradigm for biological effects of IGF-1 on MSC and have implications for the development of novel stem cell therapeutic strategies.

Li, Yangxin [Laboratory of Heart Failure and Stem Cell, Texas Heart Institute, Houston, TX 77030 (United States)]. E-mail: Yangxin_li@yahoo.com; Yu, XiYong [Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Provincial Cardiovascular Institute, Guanzhou, Guandong 510080 (China)]. E-mail: yuxycn@hotmail.com; Lin, ShuGuang [Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Provincial Cardiovascular Institute, Guanzhou, Guandong 510080 (China); Li, XiaoHong [Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Provincial Cardiovascular Institute, Guanzhou, Guandong 510080 (China); Zhang, Saidan [Section of Cardiology, Xiangya Hospital of Central-South University, Changsha, Hunan 410008 (China); Song, Yao-Hua [Department of Molecular Pathology, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030 (United States)

2007-05-11T23:59:59.000Z

344

Detecting industrial pollution in the atmospheres of earth-like exoplanets  

E-Print Network [OSTI]

Detecting biomarkers, such as molecular oxygen, in the atmospheres of transiting exoplanets has been a major focus in the search for alien life. We point out that in addition to these generic indicators, anthropogenic pollution could be used as a novel biomarker for intelligent life. To this end, we identify pollutants in the Earth's atmosphere that have significant absorption features in the spectral range covered by the James Webb Space Telescope (JWST). We estimate that for an Earth-mass planet in the habitable zone of a white dwarf, methane (CH4) and nitrous oxide (N2O) can be detected at earth-like concentrations with an integration time of ~1.5 hrs and 12 hrs respectively. Detecting pollutants that are produced nearly exclusively by anthropogenic activities will be significantly more challenging. Of these pollutants, we focus on tetrafluoromethane (CF4) and trichlorofluoromethane (CCl3F), which will be the easiest to detect. We estimate that ~1.5 days (~3 days) of total integration time will be sufficie...

Lin, Henry W; Loeb, Abraham

2014-01-01T23:59:59.000Z

345

Diamond-Like Carbon Coatings as Encapsulants for Photovoltaic Solar Cells  

SciTech Connect (OSTI)

High-quality single-layer and bilayer diamond-like carbon (DLC) thin films are fabricated by two technologies, namely, ion-assisted plasma-enhanced deposition (IAPED) and electron cyclotron resonance (ECR) deposition. Deposition on various substrates, such as sapphires and solar cells, has been performed at low substrate temperatures (50 {approx} 80 C). The two deposition technologies allow good control over the growth conditions to produce DLC films with desired optical properties, thickness, and energy bandgap. The bilayer-structured DLC can be fabricated by using IAPED for the bottom layer followed by ECR for the top layer, or just by IAPED for both layers with different compositions. The DLC films have shown good spatial uniformity, density, microhardness, and adhesion strength. They exhibit excellent stability against attack by strong acids, prolonged damp-heat exposure at 85 C and 85% relative humidity, mechanical scratch, ultrasonication, and irradiation by ultraviolet (UV), protons, and electrons. When deposited on crystalline Si and GaAs solar cells in single-layer and/or bilayer structure, the DLC films not only serve as antireflection coating and protective encapsulant, but also improve the cell efficiencies.

Pern, F. J.; Panosyan, Zh.; Gippius, A. A.; Kontsevoy, J. A.; Touryan, K.; Voskanyan, S.; Yengibaryan, Y.

2005-02-01T23:59:59.000Z

346

Constraining interactions mediated by axion-like particles with ultracold neutrons  

E-Print Network [OSTI]

We report a new limit on a possible short range spin-dependent interaction from the precise measurement of the ratio of Larmor precession frequencies of stored ultracold neutrons and $^{199}$Hg atoms confined in the same volume. The measurement was performed in a $\\sim$1$\\mu$ T vertical magnetic holding field with the apparatus searching for a permanent electric dipole moment of the neutron at the Paul Scherrer Institute. A possible coupling between freely precessing polarized neutron spins and unpolarized nucleons of the wall material can be investigated by searching for a tiny change of the precession frequencies of neutron and mercury spins. Such a frequency change can be interpreted as a consequence of a short range spin-dependent interaction that could possibly be mediated by axions or axion-like particles. The interaction strength is proportional to the CP violating product of scalar and pseudoscalar coupling constants $g_Sg_P$. Our result confirms limits from complementary experiments with spin-polarized nuclei in a model-independent way. Limits from other neutron experiments are improved by up to two orders of magnitude in the interaction range of $10^{-6}<\\lambda<10^{-4}$ m.

S. Afach; G. Ban; G. Bison; K. Bodek; M. Burghoff; M. Daum; M. Fertl; B. Franke; Z. D. Gruji?; V. Hlaine; M. Kasprzak; Y. Kermadic; K. Kirch; P. Knowles; H. -C. Koch; S. Komposch; A. Kozela; J. Krempel; B. Lauss; T. Lefort; Y. Lemire; A. Mtchedlishvili; O. Naviliat-Cuncic; F. M. Piegsa; G. Pignol; P. N. Prashanth; G. Qumner; D. Rebreyend; D. Ries; S. Roccia; P. Schmidt-Wellenburg; A. Schnabel; N. Severijns; J. Voigt; A. Weis; G. Wyszynski J. Zejma; J. Zenner; G. Zsigmond

2014-12-11T23:59:59.000Z

347

Kepler White Paper: Asteroseismology of Solar-Like Oscillators in a 2-Wheel Mission  

E-Print Network [OSTI]

We comment on the potential for continuing asteroseismology of solar-type and red-giant stars in a 2-wheel Kepler Mission. Our main conclusion is that by targeting stars in the ecliptic it should be possible to perform high-quality asteroseismology, as long as favorable scenarios for 2-wheel pointing performance are met. Targeting the ecliptic would potentially facilitate unique science that was not possible in the nominal Mission, notably from the study of clusters that are significantly brighter than those in the Kepler field. Our conclusions are based on predictions of 2-wheel observations made by a space photometry simulator, with information provided by the Kepler Project used as input to describe the degraded pointing scenarios. We find that elevated levels of frequency-dependent noise, consistent with the above scenarios, would have a significant negative impact on our ability to continue asteroseismic studies of solar-like oscillators in the Kepler field. However, the situation may be much more optimi...

Chaplin, W J; Christensen-Dalsgaard, J; Gilliland, R L; Kawaler, S D; Basu, S; De Ridder, J; Huber, D; Arentoft, T; Schou, J; Garcia, R A; Metcalfe, T S; Brogaard, K; Campante, T L; Elsworth, Y; Miglio, A; Appourchaux, T; Bedding, T R; Hekker, S; Houdek, G; Karoff, C; Molenda-Zakowicz, J; Monteiro, M J P F G; Aguirre, V Silva; Stello, D; Ball, W; Beck, P G; Birch, A C; Buzasi, D L; Casagrande, L; Cellier, T; Corsaro, E; Creevey, O L; Davies, G R; Deheuvels, S; Dogan, G; Gizon, L; Grundahl, F; Guzik, J; Handberg, R; Jimenez, A; Kallinger, T; Lund, M N; Lundkvist, M; Mathis, S; Mathur, S; Mazumdar, A; Mosser, B; Neiner, C; Nielsen, M B; Palle, P L; Pinsonneault, M H; Salabert, D; Serenelli, A M; Shunker, H; White, T R

2013-01-01T23:59:59.000Z

348

Signatures of photon and axion-like particle mixing in the gamma-ray burst jet  

E-Print Network [OSTI]

Photons couple to Axion-Like Particles (ALPs) or more generally to any pseudo Nambu-Goldstone boson in the presence of an external electromagnetic field. Mixing between photons and ALPs in the strong magnetic field of a Gamma-Ray Burst (GRB) jet during the prompt emission phase can leave observable imprints on the gamma-ray polarization and spectrum. Mixing in the intergalactic medium is not expected to modify these signatures for ALP mass > 10^(-14) eV and/or for gamma ray emission. We also show that when the magnetic field orientation in the propagation region is perpendicular to the field orientation in the production region, the observed synchrotron spectrum becomes steeper than the theoretical prediction and as detected in a sizable fraction of GRB sample. Detection of the correlated polarization and spectral signatures from these steep-spectrum GRBs by gamma-ray polarimeters can be a very powerful probe to discover ALPs. Measurement of gamma-ray polarization from GRBs in general, with high statistics, can also be useful to search for ALPs.

Olga Mena; Soebur Razzaque; F. Villaescusa-Navarro

2011-02-07T23:59:59.000Z

349

Some Quantum-Like Features of Mass Politics in Two-Party Systems  

E-Print Network [OSTI]

We expand the substantive terrain of QI's reach by illuminating a body of political theory that to date has been elaborated in strictly classical language and formalisms but has complex features that seem to merit generalizations of the problem outside the confines of classicality. The line of research, initiated by Fiorina in the 1980s, seeks to understand the origins and nature of party governance in two-party political systems wherein voters cast partisan ballots in two contests, one that determines partisan control of the executive branch and another that determines party control of a legislature. We describe how research in this area evolved in the last two decades in directions that bring it now to the point where further elaboration and study seem natural in the more general formalistic and philosophical environments embraced in QI research. In the process, we find evidence that a restriction of a classical model that has animated work in the field appears violated in a form that leads one naturally to embrace the superposition principle. We then connect classical distinctions between separable and nonseparable preferences that are common in political science to their quantum and quantum-like counterparts in the QI literature, finding special affinity for a recently-introduced understanding of the distinction that provides a passageway into the boundary between fully quantum and fully classical views of the distinction and thereby provides new leverage on existing work germane to the theory.

Charles E. Smith Jr.; Christopher Zorn

2011-07-05T23:59:59.000Z

350

Alarin but not its alternative-splicing form, GALP (Galanin-like peptide) has antimicrobial activity  

SciTech Connect (OSTI)

Highlights: Alarin inhibits the growth of E. coli but not S. aureus. Alarins potency is comparable to LL-37 in inhibiting the growth of E. coli. Alarin can cause bacterial membrane blebbing. Alalin does not induce hemolysis on erythrocytes. -- Abstract: Alarin is an alternative-splicing form of GALP (galanin-like peptide). It shares only 5 conserved amino acids at the N-terminal region with GALP which is involved in a diverse range of normal brain functions. This study seeks to investigate whether alarin has additional functions due to its differences from GALP. Here, we have shown using a radial diffusion assay that alarin but not GALP inhibited the growth of Escherichia coli (strain ML-35). The conserved N-terminal region, however, remained essential for the antimicrobial activity of alarin as truncated peptides showed reduced killing effect. Moreover, alarin inhibited the growth of E. coli in a similar potency as human cathelicidin LL-37, a well-studied antimicrobial peptide. Electron microscopy further showed that alarin induced bacterial membrane blebbing but unlike LL-37, it did not cause hemolysis of erythrocytes. In addition, alarin is only active against the gram-negative bacteria, E. coli but not the gram-positive bacteria, Staphylococcus aureus. Thus, these data suggest that alarin has potentials as an antimicrobial and should be considered for the development in human therapeutics.

Wada, Akihiro, E-mail: a-wada@nagasaki-u.ac.jp [Department of Bacteriology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan)] [Department of Bacteriology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan); Wong, Pooi-Fong [Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur (Malaysia)] [Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur (Malaysia); Hojo, Hironobu [Department of Applied Biochemistry, Institute of Glycoscience, Tokai University, Kanagawa 2591292 (Japan)] [Department of Applied Biochemistry, Institute of Glycoscience, Tokai University, Kanagawa 2591292 (Japan); Hasegawa, Makoto [Department of Bioscience, Faculty of Bioscience, Nagahama Institute of Bio-Science and Technology, Shiga 5260829 (Japan)] [Department of Bioscience, Faculty of Bioscience, Nagahama Institute of Bio-Science and Technology, Shiga 5260829 (Japan); Ichinose, Akitoyo [Electron Microscopy Shop Central Laboratory, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan)] [Electron Microscopy Shop Central Laboratory, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan); Llanes, Rafael [Institute Pedro Kouri, Havana (Cuba)] [Institute Pedro Kouri, Havana (Cuba); Kubo, Yoshinao [Division of Cytokine Signaling, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 8528523 (Japan)] [Division of Cytokine Signaling, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 8528523 (Japan); Senba, Masachika [Department of Pathology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan)] [Department of Pathology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan); Ichinose, Yoshio [Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan)] [Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki 8528523 (Japan)

2013-05-03T23:59:59.000Z

351

OUTFLOWS AND DARK BANDS AT ARCADE-LIKE ACTIVE REGION CORE BOUNDARIES  

SciTech Connect (OSTI)

Observations from the EUV Imaging Spectrometer (EIS) on board Hinode have revealed outflows and non-thermal line broadening in low intensity regions at the edges of active regions (ARs). We use data from Hinode's EIS, Solar Dynamic Observatory's Atmospheric Imaging Assembly and Helioseismic and Magnetic Imager, and the Transition Region and Coronal Explorer instrument to investigate the boundaries of arcade-like AR cores for NOAA ARs 11112, 10978, and 9077. A narrow, low intensity region that is observed at the core's periphery as a dark band shows outflows and increased spectral line broadening. This dark band is found to exist for days and appears between the bright coronal loop structures of different coronal topologies. We find a case where the dark band region is formed between the magnetic field from emerging flux and the field of the pre-existing flux. A magnetic field extrapolation indicates that this dark band is coincident with the spine lines or magnetic separatrices in the extrapolated field. This occurs over unipolar regions where the brightened coronal field is separated in connectivity and topology. This separation does not appear to be infinitesimal and an initial estimate of the minimum distance of separation is found to be Almost-Equal-To 1.5-3.5 Mm.

Scott, J. T.; Martens, P. C. H.; Tarr, L. [Department of Physics, Montana State University, Bozeman, MT 59717 (United States)

2013-03-10T23:59:59.000Z

352

Diamond and diamond-like carbon films for advanced electronic applications  

SciTech Connect (OSTI)

Aim of this laboratory-directed research and development (LDRD) project was to develop diamond and/or diamond-like carbon (DLC) films for electronic applications. Quality of diamond and DLC films grown by chemical vapor deposition (CVD) is not adequate for electronic applications. Nucleation of diamond grains during growth typically results in coarse films that must be very thick in order to be physically continuous. DLC films grown by CVD are heavily hydrogenated and are stable to temperatures {le} 400{degrees}C. However, diamond and DLC`s exceptional electronic properties make them candidates for integration into a variety of microelectronic structures. This work studied new techniques for the growth of both materials. Template layers have been developed for the growth of CVD diamond films resulting in a significantly higher nucleation density on unscratched or unprepared Si surfaces. Hydrogen-free DLC with temperature stability {le} 800{degrees}C has been developed using energetic growth methods such as high-energy pulsed-laser deposition. Applications with the largest system impact include electron-emitting materials for flat-panel displays, dielectrics for interconnects, diffusion barriers, encapsulants, and nonvolatile memories, and tribological coatings that reduce wear and friction in integrated micro-electro-mechanical devices.

Siegal, M.P.; Friedmann, T.A.; Sullivan, J.P. [and others

1996-03-01T23:59:59.000Z

353

The Effect of Lunar-like Satellites on the Orbital Infrared Light Curves of Earth-analog Planets  

E-Print Network [OSTI]

We investigate the influence of lunar-like satellites on the infrared orbital light curves of Earth-analog extra-solar planets. Such light curves will be obtained by NASA's Terrestrial Planet Finder (TPF) and ESA's Darwin missions as a consequence of repeat observations to confirm the companion status of a putative planet. We use an energy balance model to calculate disk-averaged infrared (bolometric) fluxes from planet-satellite systems over a full orbital period (one year). The satellites are assumed to lack an atmosphere, have a low thermal inertia like that of the Moon and span a range of plausible radii. The planets are assumed to have thermal and orbital properties that mimic those of the Earth while their obliquities and orbital longitudes of inferior conjunction remain free parameters. Even if the gross thermal properties of the planet can be independently constrained (e.g. via spectroscopy or visible-wavelength detection of specular glint from a surface ocean) only the largest (approximately Mars-size) lunar-like satellites can be detected by light curve data from a TPF-like instrument (i.e. one that achieves a photometric signal-to-noise of 10-20 at infrared wavelengths). Non-detection of a lunar-like satellite can obfuscate the interpretation of a given system's infrared light curve so that it may resemble a single planet with high obliquity, different orbital longitude of vernal equinox relative to inferior conjunction and in some cases drastically different thermal characteristics. If the thermal properties of the planet are not independently established then the presence of a lunar-like satellite cannot be inferred from infrared data, thus demonstrating that photometric light curves alone can only be used for preliminary study of extra-solar Earth-like planets.

Nicholas A. Moskovitz; Eric Gaidos; Darren Williams

2008-10-17T23:59:59.000Z

354

Pancreatic stellate cells enhance stem cell-like phenotypes in pancreatic cancer cells  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Pancreatic stellate cells (PSCs) promote the progression of pancreatic cancer. Black-Right-Pointing-Pointer Pancreatic cancer cells co-cultured with PSCs showed enhanced spheroid formation. Black-Right-Pointing-Pointer Expression of stem cell-related genes ABCG2, Nestin and LIN28 was increased. Black-Right-Pointing-Pointer Co-injection of PSCs enhanced tumorigenicity of pancreatic cancer cells in vivo. Black-Right-Pointing-Pointer This study suggested a novel role of PSCs as a part of the cancer stem cell niche. -- Abstract: The interaction between pancreatic cancer cells and pancreatic stellate cells (PSCs), a major profibrogenic cell type in the pancreas, is receiving increasing attention. There is accumulating evidence that PSCs promote the progression of pancreatic cancer by increasing cancer cell proliferation and invasion as well as by protecting them from radiation- and gemcitabine-induced apoptosis. Recent studies have identified that a portion of cancer cells, called 'cancer stem cells', within the entire cancer tissue harbor highly tumorigenic and chemo-resistant phenotypes, which lead to the recurrence after surgery or re-growth of the tumor. The mechanisms that maintain the 'stemness' of these cells remain largely unknown. We hypothesized that PSCs might enhance the cancer stem cell-like phenotypes in pancreatic cancer cells. Indirect co-culture of pancreatic cancer cells with PSCs enhanced the spheroid-forming ability of cancer cells and induced the expression of cancer stem cell-related genes ABCG2, Nestin and LIN28. In addition, co-injection of PSCs enhanced tumorigenicity of pancreatic cancer cells in vivo. These results suggested a novel role of PSCs as a part of the cancer stem cell niche.

Hamada, Shin [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan)] [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan); Masamune, Atsushi, E-mail: amasamune@med.tohoku.ac.jp [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan)] [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan); Takikawa, Tetsuya; Suzuki, Noriaki; Kikuta, Kazuhiro; Hirota, Morihisa [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan)] [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan); Hamada, Hirofumi [Laboratory of Oncology, Department of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji (Japan)] [Laboratory of Oncology, Department of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji (Japan); Kobune, Masayoshi [Fourth Department of Internal Medicine, Sapporo Medical University School of Medicine, Sapporo (Japan)] [Fourth Department of Internal Medicine, Sapporo Medical University School of Medicine, Sapporo (Japan); Satoh, Kennichi [Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori (Japan)] [Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori (Japan); Shimosegawa, Tooru [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan)] [Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai (Japan)

2012-05-04T23:59:59.000Z

355

Polaron-like vortices, dissociation transition, and self-induced pinning in magnetic superconductors  

SciTech Connect (OSTI)

Vortices in magnetic superconductors polarize spins nonuniformly and repolarize them when moving. At a low spin relaxation rate and at low bias currents, vortices carrying magnetic polarization clouds become polaron-like and their velocities are determined by the effective drag coefficient that is significantly bigger than the Bardeen-Stephen (BS) one. As the current increases, vortices release polarization clouds and the velocity as well as the voltage in the I-V characteristics jump to values corresponding to the BS drag coefficient at a critical current J{sub c}. The nonuniform components of the magnetic field and magnetization drop as the velocity increases, resulting in weaker polarization and a discontinuous dynamic dissociation depinning transition. Experimentally, the jump shows up as a depinning transition and the corresponding current at the jump is the depinning current. As the current decreases, on the way back, vortices are retrapped by polarization clouds at the current J{sub r} < J{sub c}. As a result, the polaronic effect suppresses dissipation and enhances the critical current. Borocarbides (RE)Ni{sub 2}B{sub 2}C with a short penetration length and highly polarizable rare earth spins seem to be optimal systems for a detailed study of vortex polaron formation by measuring I-V characteristics. We also propose to use a superconductor-magnet multilayer structure to study polaronic mechanism of pinning with the goal to achieve high critical currents. The magnetic layers should have large magnetic susceptibility to enhance the coupling between vortices and magnetization in magnetic layers while the relaxation of the magnetization should be slow. For Nb and a proper magnet multilayer structure, we estimate the critical current density J{sub c} {approx} 10{sup 9} A/m{sup 2} at the magnetic field B Almost-Equal-To 1 T.

Bulaevskii, L. N., E-mail: lnb@lanl.gov; Lin, S.-Z. [Los Alamos National Laboratory, Theoretical Division (United States)] [Los Alamos National Laboratory, Theoretical Division (United States)

2013-09-15T23:59:59.000Z

356

Interacting coronae of two T Tauri stars: first observational evidence for solar-like helmet streamers  

E-Print Network [OSTI]

Context {The young binary system V773 Tau A exhibits a persistent radio flaring activity that gradually increases from a level of a few mJy at apoastron to more than 100 mJy at periastron. Interbinary collisions between very large (> 15 R) magnetic structures anchored on the two rotating stars of the system have been proposed to be the origin of these periodic radio flares. Magnetic structures extended over tens of stellar radii, that can also account for the observed fast decay of the radio flares, seem to correspond to the typical solar semi-open quite extended magnetic configurations called helmet streamers.} Aims {We aim to find direct observational evidence for the postulated, solar-like, coronal topologies.} Methods {We performed seven-consecutive-day VLBI observations at 8.4 GHz using an array consisting of the VLBA and the 100-m Effelsberg telescope.} Results {Two distintive structures appear in the radio images here presented. They happen to be associated with the primary and secondary stars of the V773 Tau A system. In one image (Fig.2-B) the two features are extended up to 18 R each and are nearly parallel revealing the presence of two interacting helmet streamers. One image (Fig.2-E) taken a few hours after a flare monitored by the 100-m Effelsberg telescope shows one elongated fading structure substantially rotated with respect to those seen in the B run. The same decay scenario is seen in Fig.2-G for the helmet streamer associated with the other star.} Conclusions {This is the very first direct evidence revealing that even if the flare origin is magnetic reconnection due to interbinary collision, both stars independently emit in the radio range with structures of their own. These structures are helmet streamers, observed for the first time in stars other than the Sun.}

M. Massi; E. Ros; K. M. Menten; M. Kaufman Bernado'; G. Torricelli-Ciamponi; J. Neidhofer; A. Boden; D. Boboltz; A. Sargent; G. Torres

2007-12-05T23:59:59.000Z

357

Formation of Earth-like Planets During and After Giant Planet Migration  

E-Print Network [OSTI]

Close-in giant planets are thought to have formed in the cold outer regions of planetary systems and migrated inward, passing through the orbital parameter space occupied by the terrestrial planets in our own Solar System. We present dynamical simulations of the effects of a migrating giant planet on a disk of protoplanetary material and the subsequent evolution of the planetary system. We numerically investigate the dynamics of post-migration planetary systems over 200 million years using models with a single migrating giant planet, one migrating and one non-migrating giant planet, and excluding the effects of a gas disk. Material that is shepherded in front of the migrating giant planet by moving mean motion resonances accretes into "hot Earths", but survival of these bodies is strongly dependent on dynamical damping. Furthermore, a significant amount of material scattered outward by the giant planet survives in highly excited orbits; the orbits of these scattered bodies are then damped by gas drag and dynamical friction over the remaining accretion time. In all simulations Earth-mass planets accrete on approximately 100 Myr timescales, often with orbits in the Habitable Zone. These planets range in mass and water content, with both quantities increasing with the presence of a gas disk and decreasing with the presence of an outer giant planet. We use scaling arguments and previous results to derive a simple recipe that constrains which giant planet systems are able to form and harbor Earth-like planets in the Habitable Zone, demonstrating that roughly one third of the known planetary systems are potentially habitable.

Avi M. Mandell; Sean N. Raymond; Steinn Sigurdsson

2007-01-02T23:59:59.000Z

358

Identification of serum biomarkers for occupational medicamentosa-like dermatitis induced by trichloroethylene using mass spectrometry  

SciTech Connect (OSTI)

Occupational medicamentosa-like dermatitis induced by trichloroethylene (OMLDT) is an autoimmune disease and it has become a serious occupational health hazard. In the present study, we collected fasting blood samples from patients with OMLDT (n = 18) and healthy volunteers (n = 33) to explore serum peptidome patterns. Peptides in sera were purified using weak cation exchange magnetic beads (MB-WCX), and analyzed by matrix-assisted laser desorption ionization time-of-flight-mass spectrometry (MALDI-TOF-MS) and ClinProTools bioinformatics software. The intensities of thirty protein/peptide peaks were significantly different between the healthy control and OMLDT patients. A pattern of three peaks (m/z 2106.3, 2134.5, and 3263.67) was selected for supervised neural network (SNN) model building to separate the OMLDT patients from the healthy controls with a sensitivity of 95.5% and a specificity of 73.8%. Furthermore, two peptide peaks of m/z 4091.61 and 4281.69 were identified as fragments of ATP-binding cassette transporter family A member 12 (ABCA12), and cationic trypsinogen (PRRS1), respectively. Our findings not only show that specific proteomic fingerprints in the sera of OMLDT patients can be served as a differentiated tool of OMLDT patients with high sensitivity and high specificity, but also reveal the novel correlation between OMLDT with ABC transports and PRRS1, which will be of potential value for clinical and mechanistic studies of OMLDT. - Highlights: Identify 30 differential protein/peptide peaks between OMLDT and healthy control The test sensitivity and test specificity were 95.5% and 73.8%, respectively. ABCA12 and PRSS1 were identified as potential biomarkers in OMLDT patients.

Hong, Wen-Xu; Liu, Wei [Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055 (China); Zhang, Yanfang [Shenzhen Prevention and Treatment Center for Occupational Disease, Shenzhen 518001 (China); Huang, Peiwu; Yang, Xifei; Ren, Xiaohu; Ye, Jinbo; Huang, Haiyan [Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055 (China); Tang, Haiyan [Shenzhen Prevention and Treatment Center for Occupational Disease, Shenzhen 518001 (China); Zhou, Guifeng [Medical School of Hunan Normal University, Changsha 410006 (China); Huang, Xinfeng; Zhuang, Zhixiong [Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055 (China); Liu, Jianjun, E-mail: bio-research@hotmail.com [Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055 (China)

2013-11-15T23:59:59.000Z

359

ICRF Specific Plasma Wall Interactions in JET with the ITER-Like Wall  

SciTech Connect (OSTI)

A variety of plasma wall interactions (PWIs) during operation of the so-called A2 ICRF antennas is observed in JET with the ITER-like wall. Amongst effects of the PWIs, the W content increase is the most significant, especially at low plasma densities. No increase of W source from the main divertor and entrance of the outer divertor during ICRF compared to NBI phases was found by means of spectroscopic and WI (400.9 nm) imaging diagnostics. In contrary, the W flux there is higher during NBI. Charge exchange neutrals of hydrogen isotopes could be excluded as considerable contributors to the W source. The high W content in ICRF heated limiter discharges suggests the possibility of other W sources than the divertor alone. Dependencies of PWIs to individual ICRF antennas during q95-scans, and intensification of those for the 90 phasing, indicate a link between the PWIs and the antenna near-fields. The PWIs include heat loads and Be sputtering pattern on antenna limiters. Indications of some PWIs at the outer divertor entrance are observed which do not result in higher W flux compared to the NBI phases, but are characterized by small antenna-specific (up to 25% with respect to ohmic phases) bipolar variations of WI emission. The first TOPICA calculations show a particularity of the A2 antennas compared to the ITER antenna, due to the presence of long antenna limiters in the RF image current loop and thus high near-fields across the most part of the JET outer wall.

Bobkov, V. [Max-Planck-Institut fur Plasmaphysik, EURATOM Association, Garching, Germany] [Max-Planck-Institut fur Plasmaphysik, EURATOM Association, Garching, Germany; Arnoux, G. [EURATOM, Culham Sci Ctr, Abingdon, Oxon England] [EURATOM, Culham Sci Ctr, Abingdon, Oxon England; Brezinsek, S. [Forschungszentrum Julich, Julich, Germany] [Forschungszentrum Julich, Julich, Germany; Coenen, J. W. [Institute of Energy and Climate Research, Germany] [Institute of Energy and Climate Research, Germany; Colas, L. [French Atomic Energy Commission (CEA)] [French Atomic Energy Commission (CEA); Clever, M. [Institute of Energy and Climate Research, Germany] [Institute of Energy and Climate Research, Germany; Czarnecka, A. [Association EURATOM-IPPLM, Warsaw, Poland] [Association EURATOM-IPPLM, Warsaw, Poland; Braun, F. [Max-Planck-Institut fur Plasma Physik, Garching, Germany] [Max-Planck-Institut fur Plasma Physik, Garching, Germany; Dux, R. [Max-Planck-Institut fur Plasma Physik, Garching, Germany] [Max-Planck-Institut fur Plasma Physik, Garching, Germany; Huber, Alexander [EURATOM / FZ-Juelich, Germany] [EURATOM / FZ-Juelich, Germany; Jacquet, P. [EURATOM / UKAEA, Abingdon, UK] [EURATOM / UKAEA, Abingdon, UK; Klepper, C Christopher [ORNL] [ORNL; Lerche, E. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium] [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Maggi, C. [Max-Planck-Institut fur Plasma Physik, Garching, Germany] [Max-Planck-Institut fur Plasma Physik, Garching, Germany; Marcotte, F. [CEA IRFM, St. Paul-lez-Durance, France] [CEA IRFM, St. Paul-lez-Durance, France; Maslov, M. [Association EURATOM-CCFE, Abingdon, UK] [Association EURATOM-CCFE, Abingdon, UK; Matthews, G. [Association EURATOM-CCFE, Abingdon, UK] [Association EURATOM-CCFE, Abingdon, UK; Mayoral, M.-L. [EURATOM / UKAEA, UK] [EURATOM / UKAEA, UK; McCormick, K. D. [Max-Planck-Institut fur Plasma Physik, Garching, Germany] [Max-Planck-Institut fur Plasma Physik, Garching, Germany; Meigs, A. G. [EURATOM / UKAEA, UK] [EURATOM / UKAEA, UK; Milanesio, D. [Politecnico di Torino] [Politecnico di Torino; Monakhov, I. [EURATOM / UKAEA, Abingdon, UK] [EURATOM / UKAEA, Abingdon, UK; Neu, Rudolf [EURATOM / IPP Garching, Germany] [EURATOM / IPP Garching, Germany; Noterdaeme, J.-M. [Max-Planck-Institut fur Plasma Physik, Garching, Germany] [Max-Planck-Institut fur Plasma Physik, Garching, Germany; Putterich, Th. [Max-Planck-Institut fur Plasma Physik, Garching, Germany] [Max-Planck-Institut fur Plasma Physik, Garching, Germany; Rimini, F. [Association EURATOM-CCFE, Abingdon, UK] [Association EURATOM-CCFE, Abingdon, UK; Rooj, G. Van [Institute for Plasma Physics Rijnhuizen, Nieuwegein, Netherlands] [Institute for Plasma Physics Rijnhuizen, Nieuwegein, Netherlands; Sergienko, G. [Institute of Energy and Climate Research, Germany] [Institute of Energy and Climate Research, Germany; Van Eester, D. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium] [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium

2013-01-01T23:59:59.000Z

360

Relationship between the structure and electrical characteristics of diamond-like carbon films  

SciTech Connect (OSTI)

To elucidate the relationship between the structure and the electrical characteristics of diamond-like carbon (DLC) films, DLC films were synthesized in a well-controlled glow discharge with the aid of photoelectrons in an argon/methane atmosphere. The dielectric constant and breakdown strength of the films exhibited opposite behaviors, depending on the total pressure during the synthesis. The product of these two values decreased monotonically as the pressure increased. The Raman spectra were analyzed with a Voigt-type formula. Based on the results, the authors propose the sp{sup 2} cluster model for the DLC structure. This model consists of conductive clusters of sp{sup 2} carbons surrounded by a dielectric matrix sea of sp{sup 2} carbon, sp{sup 3} carbon, and hydrogen, and indicates that the dielectric constant of the whole DLC film is determined by the balance between the dielectric constant of the matrix and the total size of the clusters, while the breakdown strength is determined by the reciprocal of the cluster size. The model suggests that a high-? DLC film can be synthesized at a middle pressure and consists of well-grown sp{sup 2} clusters and a dense matrix. A low-? DLC film can be synthesized both at low and high pressures. The sp{sup 2} cluster model explains that a low-? DLC film synthesized at low pressure consists of a dense matrix and a low density of sp{sup 2} clusters, and exhibits a high breakdown strength. On the other hand, a low-? film synthesized at high pressure consists of a coarse matrix and a high density of clusters and exhibits a low breakdown strength.

Takabayashi, Susumu, E-mail: stak@riec.tohoku.ac.jp; Otsuji, Taiichi [Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan); Yang, Meng; Ogawa, Shuichi; Hayashi, Hiroyuki; Jeko, Radek; Takakuwa, Yuji [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)

2014-09-07T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" from the National Library of EnergyBeta (NLEBeta).
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361

Magnetization reversal in ferromagnetic thin films induced by spin-orbit interaction with Slonczewski-like spin transfer torque  

SciTech Connect (OSTI)

We theoretically investigate the dynamics of magnetization in ferromagnetic thin films induced by spin-orbit interaction with Slonczewski-like spin transfer torque. We reproduce the experimental results of perpendicular magnetic anisotropy films by micromagnetic simulation. Due to the spin-orbit interaction, the magnetization can be switched by changing the direction of the current with the assistant of magnetic field. By increasing the current amplitude, wider range of switching events can be achieved. Time evolution of magnetization has provided us a clear view of the process, and explained the role of minimum external field. Slonczewski-like spin transfer torque modifies the magnetization when current is present. The magnitude of the minimum external field is determined by the strength of the Slonczewski-like spin transfer torque. The investigations may provide potential applications in magnetic memories.

Li, Jia, E-mail: lijia@wipm.ac.cn [State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 (China)

2014-10-07T23:59:59.000Z

362

Fractional Dynamical Model for the Generation of ECG like Signals from Filtered Coupled Van-der Pol Oscillators  

E-Print Network [OSTI]

In this paper, an incommensurate fractional order (FO) model has been proposed to generate ECG like waveforms. Earlier investigation of ECG like waveform generation is based on two identical Van-der Pol (VdP) family of oscillators which are coupled by time delays and gains. In this paper, we suitably modify the three state equations corresponding to the nonlinear cross-product of states, time delay coupling of the two oscillators and low-pass filtering, using the concept of fractional derivatives. Our results show that a wide variety of ECG like waveforms can be simulated from the proposed generalized models, characterizing heart conditions under different physiological conditions. Such generalization of the modelling of ECG waveforms may be useful to understand the physiological process behind ECG signal generation in normal and abnormal heart conditions. Along with the proposed FO models, an optimization based approach is also presented to estimate the VdP oscillator parameters for representing a realistic ...

Das, Saptarshi

2014-01-01T23:59:59.000Z

363

Efforts towards the synthesis of fully N-differentiated heparin-like glycosaminoglycans; and, Investigations into the mechanism of inactivation of RTPR by gemcitabine triphosphate  

E-Print Network [OSTI]

Efforts towards the Synthesis of Fully N-Differentiated Heparin-like Glycosaminoglycans. Heparin-like glycosaminoglycans (HLGAGs) are complex information-carrying biopolymers and are an important component of the coagulation ...

Lohman, Gregory J. S

2007-01-01T23:59:59.000Z

364

The C. elegans EMAP-like protein, ELP-1 is required for touch sensation and associates with microtubules and adhesion complexes  

E-Print Network [OSTI]

Background: The founding member of the EMAP-like protein family is the Echinoderm Microtubule-Associated Protein (EMAP), so-named for its abundance in sea urchin, starfish, and sand dollar eggs. The EMAP-like protein family ...

Hueston, Jennifer L.; Herren, Gina Purinton; Cueva, Juan G.; Buechner, Matthew; Lundquist, Erik A.; Goodman, Miriam B.; Suprenant, Kathy A.

2008-11-17T23:59:59.000Z

365

Ion cyclotron resonance frequency heating in JET during initial operations with the ITER-like wall  

SciTech Connect (OSTI)

In 2011/12, JET started operation with its new ITER-Like Wall (ILW) made of a tungsten (W) divertor and a beryllium (Be) main chamber wall. The impact of the new wall materials on the JET Ion Cyclotron Resonance Frequency (ICRF) operation is assessed and some important properties of JET plasmas heated with ICRF are highlighted. A???20% reduction of the antenna coupling resistance is observed with the ILW as compared with the JET carbon (JET-C) wall. Heat-fluxes on the protecting limiters close the antennas, quantified using Infra-Red thermography (maximum 4.5?MW/m{sup 2} in current drive phasing), are within the wall power load handling capabilities. A simple RF sheath rectification model using the antenna near-fields calculated with the TOPICA code can reproduce the heat-flux pattern around the antennas. ICRF heating results in larger tungsten and nickel (Ni) contents in the plasma and in a larger core radiation when compared to Neutral Beam Injection (NBI) heating. The location of the tungsten ICRF specific source could not be identified but some experimental observations indicate that main-chamber W components could be an important impurity source: for example, the divertor W influx deduced from spectroscopy is comparable when using RF or NBI at same power and comparable divertor conditions, and Be evaporation in the main chamber results in a strong reduction of the impurity level. In L-mode plasmas, the ICRF specific high-Z impurity content decreased when operating at higher plasma density and when increasing the hydrogen concentration from 5% to 15%. Despite the higher plasma bulk radiation, ICRF exhibited overall good plasma heating performance; the power is typically deposited at the plasma centre while the radiation is mainly from the outer part of the plasma bulk. Application of ICRF heating in H-mode plasmas has started, and the beneficial effect of ICRF central electron heating to prevent W accumulation in the plasma core has been observed.

Jacquet, P., E-mail: philippe.jacquet@ccfe.ac.uk; Monakhov, I.; Arnoux, G.; Brix, M.; Graham, M.; Meigs, A.; Sirinelli, A. [Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Bobkov, V.; Devaux, S.; Drewelow, P.; Ptterich, T. [Max-Planck-Institut fr Plasmaphysik, EURATOM-Assoziation, Garching (Germany); Colas, L. [CEA, IRFM, F-13108 Saint-Paul-Lez-Durance (France); Czarnecka, A. [Association Euratom-IPPLM, Hery 23, 01-497 Warsaw (Poland); Lerche, E.; Van-Eester, D. [Association EURATOM-Belgian State, ERM-KMS, Brussels (Belgium); Mayoral, M.-L. [Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); EFDA Close Support Unit, Garching (Germany); Brezinsek, S. [IEK-4, Forschungszentrum Jlich, Association EURATOM-FZJ, Jlich (Germany); Campergue, A.-L. [Ecole Nationale des Ponts et Chausses, F77455 Marne-la-Valle (France); Klepper, C. C. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6169 (United States); Milanesio, D. [Politecnico di Torino, Department of Electronics, Torino (Italy); and others

2014-06-15T23:59:59.000Z

366

Fabrication of highly transparent diamond-like carbon anti-reflecting coating for Si solar cell application  

SciTech Connect (OSTI)

ARC grade highly transparent unhydrogenated diamond-like carbon (DLC) films were produced, directly from a-C target, using RF magnetron sputtering deposition technique, for optoelectronic applications. Optical band gap, transmittance, reflectance, sp{sup 3} fraction, I{sub D}/I{sub G}, density, and refractive index of the films have been estimated with the help of optical tools like Uv-vis spectrophotometer, ellipsometer and micro-Raman. Optimum ARC-qualities have been identified in low-temperature grown DLC films at an Ar pressure of 4 mTorr in the reactor, accomplishing its key requirements for use in silicon solar cells.

Banerjee, Amit, E-mail: erdd@iacs.res.in; Das, Debajyoti, E-mail: erdd@iacs.res.in [Nano-Science Group, Energy Research Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032 (India)

2014-04-24T23:59:59.000Z

367

EVIDENCE FOR THE IMPACT OF STELLAR ACTIVITY ON THE DETECTABILITY OF SOLAR-LIKE OSCILLATIONS OBSERVED BY KEPLER  

SciTech Connect (OSTI)

We use photometric observations of solar-type stars, made by the NASA Kepler Mission, to conduct a statistical study of the impact of stellar surface activity on the detectability of solar-like oscillations. We find that the number of stars with detected oscillations falls significantly with increasing levels of activity. The results present strong evidence for the impact of magnetic activity on the properties of near-surface convection in the stars, which appears to inhibit the amplitudes of the stochastically excited, intrinsically damped solar-like oscillations.

Chaplin, W. J.; Broomhall, A.-M.; Hekker, S.; Elsworth, Y.; Stevens, I. R. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom); Bedding, T. R.; Huber, D. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Bonanno, A. [INAF Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123, Catania (Italy); GarcIa, R. A. [Laboratoire AIM, CEA/DSM, CNRS, Universite Paris Diderot, IRFU/SAp, 91191 Gif-sur-Yvette Cedex (France); Verner, G. A. [Astronomy Unit, Queen Mary, University of London, Mile End Road, London, E1 4NS (United Kingdom); Basu, S. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Houdek, G. [Institute of Astronomy, University of Vienna, A-1180 Vienna (Austria); Mathur, S.; Metcalfe, T. S. [High Altitude Observatory and, Scientific Computing Division, National Center for Atmospheric Research, Boulder, Colorado 80307 (United States); Mosser, B. [LESIA, CNRS, Universite Pierre et Marie Curie, Universite Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex (France); New, R. [Materials Engineering Research Institute, Faculty of Arts, Computing, Engineering and Sciences, Sheffield Hallam University, Sheffield, S1 1WB (United Kingdom); Appourchaux, T. [Institut d'Astrophysique Spatiale, Universite Paris XI, CNRS (UMR8617), Batiment 121, 91405 Orsay Cedex (France); Karoff, C. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Molenda-Zakowicz, J. [Astronomical Institute, University of Wroclaw, ul. Kopernika, 11, 51-622 Wroclaw (Poland); Monteiro, M. J. P. F. G. [Centro de Astrofisica and Faculdade de Ciencias, Universidade do Porto, Rua das Estrelas, 4150-762 (Portugal)

2011-05-01T23:59:59.000Z

368

Please contact Susan Gordon, Research Information Specialist, at gordosc@mcmaster.ca or extension 23138 if you would like to subscribe/unsubscribe to the Funding Opportunities Bulletin mailing list or if you would like assistance searching for  

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Hitchcock, Adam P.

369

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Thompson, Michael

370

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Hitchcock, Adam P.

371

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Hitchcock, Adam P.

372

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Hitchcock, Adam P.

373

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Hitchcock, Adam P.

374

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Hitchcock, Adam P.

375

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Hitchcock, Adam P.

376

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Hitchcock, Adam P.

377

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Thompson, Michael

378

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like assistance searching for funding opportunities. Recent issues of the Bulletin may also be found and Validation of Extreme Weather Indicators for Agricultural Production and Rural Resilience in Ontario Research Grant - Letter of Interest deadline August 22, 2014 · Blueline Bioscience: Blueline Drug Target Program

Haykin, Simon

379

Contamination sources of PCDD/Fs, dioxin-like PCBs, PAHs and trace metals in sediments of high and low impacted transboundary rivers (Belgium-France).  

E-Print Network [OSTI]

1 Contamination sources of PCDD/Fs, dioxin-like PCBs, PAHs and trace metals in sediments of high hydrocarbons (PAHs), dioxins (PCDD/Fs and dioxin-like PCBs) and trace metals have been assessed in sediment from pyrolytic (combustion) origin. For the PCDD/Fs and dioxin-like PCBs we compared the fingerprint

Boyer, Edmond

380

Ratchet behavior in nonlinear Klein-Gordon systems with point-like inhomogeneities Luis MoralesMolina  

E-Print Network [OSTI]

Ratchet behavior in nonlinear Klein-Gordon systems with point-like inhomogeneities Luis Morales: February 14, 2005) We investigate the ratchet dynamics of nonlinear Klein-Gordon kinks in a periodic a collective coordinate framework, which shows that such system behaves as a rocking ratchet for point

Snchez, Angel "Anxo"

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


381

Improved Lithium Ion Behavior Properties of TiO2@Graphitic-like Carbon Core@Shell Nanostructure  

E-Print Network [OSTI]

Improved Lithium Ion Behavior Properties of TiO2@Graphitic-like Carbon Core@Shell Nanostructure Min Intercalation Electrochemistry Capacitance Lithium Ion batteries A B S T R A C T We demonstrate TiO2@graphitic on the electrode surface and enhanced lithium ion intercalation, leading to lower charge transfer resistance

Cao, Guozhong

382

Bow-wave-like hydraulic jump and horseshoe vortex around an obstacle in a supercritical open channel flow  

E-Print Network [OSTI]

Bow-wave-like hydraulic jump and horseshoe vortex around an obstacle in a supercritical open the obstacle, two main flow structures are observed: i a hydraulic jump in the near-surface region and ii turbulent regime , the detachment length of the hydraulic jump exceeds the one of the horseshoe vortex

Boyer, Edmond

383

TW Chapter 3 -Roush This chapter is meant to deepen and broaden an argument that goes something like this  

E-Print Network [OSTI]

by something local (due to something like a classical causal picture) and that's both why mental states can1 TW Chapter 3 - Roush This chapter is meant to deepen and broaden an argument that goes something is broad, TW argued that knowledge can add something mental to belief or rational belief or... whatever

Fitelson, Branden

384

We can imagine that this complicated array of moving things which cons6tutes "the world" is something like a  

E-Print Network [OSTI]

"the world" is something like a great chess game being played by the gods as you try to figure physics out. · That's okay. Physics is hard to figure physics out. · That's okay. Physics is hard to understand un6l you

Glashausser, Charles

385

INHIBITION OF CASPASE-LIKE ACTIVITIES PREVENTS THE APPEARANCE OF REACTIVE OXYGEN SPECIES AND DARK-INDUCED APOPTOSIS  

E-Print Network [OSTI]

cells revealed by SYTOX-green staining, and the generation of reactive oxygen species (ROS), we usedINHIBITION OF CASPASE-LIKE ACTIVITIES PREVENTS THE APPEARANCE OF REACTIVE OXYGEN SPECIES AND DARK viability; Dunaliella tertiolecta; phosphatidylserine; phytoplankton; reactive oxygen species; unicellular

Berges, John A.

386

Does the elephant trumpet like a trumpet? Jol Gilbert (1), Jean-Pierre Dalmont (1) and Romain Potier (2)  

E-Print Network [OSTI]

Does the elephant trumpet like a trumpet? Joël Gilbert (1), Jean-Pierre Dalmont (1) and Romain de Beauval, Saint-Aignan, France ABSTRACT Elephants produce a broad range of sounds from very low the trunk. Trumpets are mainly tonal sounds. Elephants tend to trumpet when they are highly stimulated

Paris-Sud XI, Université de

387

Comparing modern and Pleistocene ENSO-like influences in NW Argentina using nonlinear time series analysis methods  

E-Print Network [OSTI]

Comparing modern and Pleistocene ENSO-like influences in NW Argentina using nonlinear time series of 106 m3 occurred in the arid to semiarid intra-Andean basins of northwest- ern Argentina (Strecker Argentina are not well known for the period at around 30,000 14 C years ago. Marine and terrestrial records

Vuille, Mathias

388

IMC-like Analytical H design with S/SP mixed sensitivity consideration: Utility in PID tuning guidance6  

E-Print Network [OSTI]

IMC-like Analytical H design with S/SP mixed sensitivity consideration: Utility in PID tuning methodology is also suitable for teaching purposes. Key words: H control, Weighted Sensitivity, IMC, PID, the Proportional-Integrative-Derivative (PID) controller is recognized to be the bread and butter of automatic

Skogestad, Sigurd

389

Anglers who have been offshore fishing have most likely seen the bulging eyes, protruding stomach and distended  

E-Print Network [OSTI]

Anglers who have been offshore fishing have most likely seen the bulging eyes, protruding stomach and distended intestines of a fish brought up from deep water on hook and line. You might wonder if there is hope for such fish. As with human divers, fish that experience rapid pressure change can suffer a host

Florida, University of

390

Acknowledgements WWF-UK would like to thank Earthsight Investigations for their assistance in carrying out this  

E-Print Network [OSTI]

timber products back to their source. The key finding of the study is just how little companies know like to thank the companies that responded to our requests for information: Arnold Laver; B Plywood & Doors; Pacific Rim Wood UK; Palmer Timber Ltd; Panaget; Paterson Timber Ltd; Tarkett AB

391

Renewable Energy 33 (2008) 226231 The effect of annealing on the properties of diamond-like carbon  

E-Print Network [OSTI]

Renewable Energy 33 (2008) 226­231 The effect of annealing on the properties of diamond-like carbon (XPS) and high-resolution transmission electron microscopy (HRTEM). The reflectance of DLC thin film was investigated by UV­vis spectrometry and its electrical properties were investigated using a four point probe

Hong, Byungyou

392

Decorating anode with bamboo-like nitrogen-doped carbon nanotubes for microbial Suqin Ci a,c  

E-Print Network [OSTI]

Decorating anode with bamboo-like nitrogen-doped carbon nanotubes for microbial fuel cells Suqin Ci November 2011 Available online 20 November 2011 Keywords: Carbon nanotubes Nitrogen doping Anode Microbial. Introduction Microbial fuel cells (MFCs) are bio-electrochemical systems that directly convert chemical energy

393

Shells of crabs like these may be the key to prolonging the life of microbial fuel cells that  

E-Print Network [OSTI]

Shells of crabs like these may be the key to prolonging the life of microbial fuel cells that power/06/ 070604123858.htm Marine Sediment Microbial Fuel Cells Get A Nutritional Boost ScienceDaily (June 11, 2007) -- Discarded crab and lobster shells may be the key to prolonging the life of microbial fuel cells that power

394

The coupling between eye movements and cognition varies with the task at hand. In tasks like reading, the eyes  

E-Print Network [OSTI]

The coupling between eye movements and cognition varies with the task at hand. In tasks like reading, the eyes are "the window to the soul," moving with each step of the underlying process, the coupling is looser. People tend to look at certain locations, but the sequence of eye movements

Logan, Gordon D.

395

Abstract--A fish-like propulsion system seems to be an interesting and efficient alternative to propellers in small  

E-Print Network [OSTI]

1 Abstract--A fish-like propulsion system seems to be an interesting and efficient alternative. Finally there is a description of the control system implementation for the tail's motion. Index terms--Fish propulsion, underwater robot, fish design. I. INTRODUCTION LTHOUGH almost all marine vehicles use propellers

Papadopoulos, Evangelos

396

nature physics | VOL 6 | MARCH 2010 | www.nature.com/naturephysics 155 How do you solve a problem like friction?  

E-Print Network [OSTI]

a problem like friction? I learned to respect friction, as a phenomenon with many nuances, when I friction between the ball and floor, work out, first, how far the ball goes before it is rolling. The first part, I quickly demonstrated, is easy. Assuming the force of sliding friction is independent

Loss, Daniel

397

The use of snakes as symbols has been popular throughout the ages. Egyptian Pharaohs wore the likeness of a poisonous  

E-Print Network [OSTI]

the likeness of a poisonous asp on their headdresses in the belief that this protected them from harm and gave- tions of such superstitions can be destroyed. Food All snakes eat other animals. Some small snakes feed various ways of catching their food. One of them, the worm snake, burrows through the ground to eat

398

The seismic monitoring of buildings is particularly important in high-population urban areas like Greater Boston. While  

E-Print Network [OSTI]

PROBLEM The seismic monitoring of buildings is particularly important in high-population urban areas like Greater Boston. While Massachusetts' seismic building codes are adapted from Cali- fornia to damage from earthquakes of small magnitude, particularly if the fundamen- tal frequency of the seismic

Polz, Martin

399

Like all other vertebrates, fish need time to recover after exhaustive activity. Furthermore, a rapid rate of recovery may  

E-Print Network [OSTI]

Like all other vertebrates, fish need time to recover after exhaustive activity. Furthermore. For example, a rapid rate of recovery is needed to keep migratory passage timely when adult salmon use of anaerobic swimming because the entire upstream migration is completed using stored energy reserves

Farrell, Anthony P.

400

When you hear the term "heart disease," what's your first reaction? Like many women, you may think, "That's a  

E-Print Network [OSTI]

When you hear the term "heart disease," what's your first reaction? Like many women, you may think, "That's a man's disease." But here's The Heart Truth: Heart disease is the #1 killer of Latinas in the United States. Together with stroke, heart disease accounts for a third of all deaths among Latinas

Bandettini, Peter A.

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


401

Immigration and poverty in the United States with immigrants. In this article, we examine the likely direct  

E-Print Network [OSTI]

27 Immigration and poverty in the United States with immigrants. In this article, we examine the likely direct and indirect effects of immigration on poverty rates. Basic poverty trends Poverty-born, whereas poverty among immigrants increased. Although the poverty rate of immigrants from many regions has

Sekhon, Jasjeet S.

402

Abstract --The influence on the thermal resistance of emitter design parameters like emitter area, aspect ratio, and distance to  

E-Print Network [OSTI]

Abstract -- The influence on the thermal resistance of emitter design parameters like emitter area-state) thermal resistance, but also in a faster thermal transient of the transistors. Accurate RC networks are extracted by measurements in order to model the thermal impedance transient of devices with or without Al

Technische Universiteit Delft

403

A heat-shock-like response with cytoskeletal disruption occurs following hydrostatic pressure in MG-63 osteosarcoma cells  

E-Print Network [OSTI]

A heat-shock-like response with cytoskeletal disruption occurs following hydrostatic pressure in MG,K.A., KLEBE,R., and CAMERON,I.L. 1993. A heat-shock-likeresponse with cytoskeletal disruption occurs following distribution of the cytoskeletal elements and heat shock protein 70 (hsp70) were followed by indirect

Athanasiou, Kyriacos

404

NEUTRON LIFETIME EXPERIMENT BASED ON AN `ACCORDION-LIKE' UCN STORAGE VOLUME COATED WITH `LOW TEMPERATURE FOMBLIN'  

E-Print Network [OSTI]

, Cambridge, MA, USA; 2 University of Rhode Island, Kingston, RI, USA; 3 Joint Institute for Nuclear Research-fluorinated polymer, `Low Temperature Fomblin', has been tested as a wall coating in an ultracold neutron (UCN of an accordion-like storage vessel. In this system, the surface area and its distribution over height remain

Steyerl, Albert

405

Family business Information Update Please list all members that would like to receive information about the Family Business Council events.  

E-Print Network [OSTI]

Family business Information Update Please list all members that would like to receive information about the Family Business Council events. Name Company Mailing Address City State/Province ZipPhone #12;Thank you for helping us update our records. Please send information about the Family Business

de Lijser, Peter

406

Planning your business: The Business Plan A business plan is like a road map for your business. Careful  

E-Print Network [OSTI]

Planning your business: The Business Plan A business plan is like a road map for your business. Careful planning is key to any successful business. A business plan ensures that resources are available, including (time, money, and opportunities). It helps you decide where you want to go with the business

407

Like this post? Subscribe to our RSS feed and stay up to date. Navy Develops Battery that Runs on Mud  

E-Print Network [OSTI]

. Geobacter uses hair-like extensions known as pili to generate electricity from mud and wastewater by converting decomposed marine organisms into electricity." By converting naturally occurring fuels and oxidants in the marine environment into electricity, Naval vessels could be running on a clean

Lovley, Derek

408

Most impacts on wildlife will likely be indirect as wildlife species respond to slow changes in plant  

E-Print Network [OSTI]

: status and concerns. Ecological relationships of winter ticks, moose, and climate change. Moose) changes · "moose sickness" · deer keds · forestry impacts ("sprucification") Russia: poaching#12; Most impacts on wildlife will likely be indirect as wildlife species respond to slow changes

New Hampshire, University of

409

ROFESSOR SUSAN J SMITH doesn't look like a radical. Tall, elegant and softly spoken she  

E-Print Network [OSTI]

26 CAM 59 #12;P ROFESSOR SUSAN J SMITH doesn't look like a radical. Tall, elegant and softly spoken she might be, but under that calm exterior, Professor Smith has a startling ­ and seemingly highly, Susan J Smith (the initial, she says, essential in a world dictated by Google) rather enjoys swimming

410

YOLO COUNTY / The Next Napa? / Living in Yolo is like living in Provence, without the three-hour lunches  

E-Print Network [OSTI]

YOLO COUNTY / The Next Napa? / Living in Yolo is like living in Provence, without the three of us who live in Yolo County have had to define ourselves gastronomically with descriptions such as acquaintances as the hinterlands of culinary civilization, even though Yolo has been quietly fueling the Bay

Kowalczykowski, Stephen C.

411

Fractional Dynamical Model for the Generation of ECG like Signals from Filtered Coupled Van-der Pol Oscillators  

E-Print Network [OSTI]

In this paper, an incommensurate fractional order (FO) model has been proposed to generate ECG like waveforms. Earlier investigation of ECG like waveform generation is based on two identical Van-der Pol (VdP) family of oscillators which are coupled by time delays and gains. In this paper, we suitably modify the three state equations corresponding to the nonlinear cross-product of states, time delay coupling of the two oscillators and low-pass filtering, using the concept of fractional derivatives. Our results show that a wide variety of ECG like waveforms can be simulated from the proposed generalized models, characterizing heart conditions under different physiological conditions. Such generalization of the modelling of ECG waveforms may be useful to understand the physiological process behind ECG signal generation in normal and abnormal heart conditions. Along with the proposed FO models, an optimization based approach is also presented to estimate the VdP oscillator parameters for representing a realistic ECG like signal.

Saptarshi Das; Koushik Maharatna

2014-10-20T23:59:59.000Z

412

Theoretical studies of the atomic transitions in boron-like ions: Mg VIII, Si X and S XII  

E-Print Network [OSTI]

In this paper, we have carried out the calculations of the weighted oscillator strengths and the transition probabilities for a few low-lying transitions of boron-like ions: Mg VIII, Si X and S XII which are astrophysically important, particularly, in the atmospheres of the solar corona. We have employed an all-order relativistic many-body theory called the relativistic coupled-cluster theory to calculate very precisely these atomic quantities of astrophysical interest. We have reported for the first time the transition probabilities for some forbidden transitions which are unavailable in the literature; either theoretically or experimentally. We also discuss the physical effects associated with these transitions. Our data can be used for the identification of spectral lines arising from the coronal atmospheres of Sun and Sun-like stars having an extended corona.

H. S. Nataraj; B. K. Sahoo; B. P. Das; R. K. Chaudhuri; D. Mukherjee

2007-07-30T23:59:59.000Z

413

Search for new physics in high pT like-sign dilepton events at CDF II  

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

We present a search for new physics in events with two high pT leptons of the same electric charge, using data with an integrated luminosity of 6.1 fb-1. The observed data are consistent with standard model predictions. We set 95% C.L. lower limits on the mass of doubly-charged scalars decaying to like-sign dileptons, mH > 190 - 245 GeV/c2, depending on the decay mode and coupling.

Aaltonen, T [Helsinki Inst. of Phys.; Alvarez Gonzalez, B [Oviedo U., Cantabria Inst. of Phys.; Amerio, S [INFN, Padua; Amidei, D [Michigan U.; Anastassov, A [Northwestern U.; Annovi, A [Frascati; Antos, J [Comenius U.; Apollinari, G [Fermilab; Appel, J A [Fermilab; Apresyan, A [Purdue U.; Arisawa, T [Waseda U., Dubna, JINR

2011-10-25T23:59:59.000Z

414

Cost comparison of collaborative and IPD-like project delivery methods versus non-collaborative project delivery methods  

E-Print Network [OSTI]

Proceedings of the 20th Conference of the International Group for Lean Construction July 17-22, 2012: San Diego, CA, U.S.A. 781 COST COMPARISON OF COLLABORATIVE AND IPD-LIKE PROJECT DELIVERY METHODS VERSUS COMPETITIVE NON... acceptance of IPD for public projects. KEYWORDS Collaboration, Project Delivery, CM-at-Risk (CMR; CMAR), Competitive Sealed Proposal (CSP), Integrated Project Delivery (IPD), Design-Bid-Build (DBB), Cost Comparison INTRODUCTION One of the most widely...

Kulkarni, Aditi; Rybkowski, Zofia K.; Smith, James

2012-07-17T23:59:59.000Z

415

Devils staircase like behavior of the range of random time series associated with the tangled nature of evolution  

E-Print Network [OSTI]

We present empirical evidence that the range of random time series associated with the tangled nature model of evolution exhibits a devils staircase like behavior characterized by logarithmic trend and the universal multi-affine spectrum of scaling exponents xi_c of q leq q_c moments of q-order height-height correlations, whereas for q > q_c the moments behaves logarithmically.

Balankin, A S; Balankin, Alexander S.

2005-01-01T23:59:59.000Z

416

VISCOUS-LIKE INTERACTION OF THE SOLAR WIND WITH THE PLASMA TAIL OF COMET SWIFT-TUTTLE  

SciTech Connect (OSTI)

We compare the results of the numerical simulation of the viscous-like interaction of the solar wind with the plasma tail of a comet, with velocities of H{sub 2}O+ ions in the tail of comet Swift-Tuttle determined by means of spectroscopic ground-based observations. Our aim is to constrain the value of the basic parameters in the viscous-like interaction model: the effective Reynolds number of the flow and the interspecies coupling timescale. We find that in our simulations the flow rapidly evolves from an arbitrary initial condition to a quasi-steady state for which there is a good agreement between the simulated tailward velocity of H{sub 2}O+ ions and the kinematics derived from the observations. The fiducial case of our model, characterized by a low effective Reynolds number (Re{sub eff} {approx} 20) selected on the basis of a comparison to in situ measurements of the plasma flow at comet Halley, yields an excellent fit to the observed kinematics. Given the agreement between model and observations, with no ad hoc assumptions, we believe that this result suggests that viscous-like momentum transport may play an important role in the interaction of the solar wind and the cometary plasma environment.

Reyes-Ruiz, Mauricio; Vazquez, Roberto [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apdo. Postal 877, Ensenada, B.C. 22800 (Mexico); Perez-de-Tejada, Hector, E-mail: maurey@astrosen.unam.m [Instituto de Geofisica, Universidad Nacional Autonoma de Mexico, Ciudad Univeritaria, Mexico D.F. (Mexico)

2010-07-01T23:59:59.000Z

417

Coherent quantum transport in disordered systems: A unified polaron treatment of hopping and band-like transport  

E-Print Network [OSTI]

Quantum transport in disordered systems is studied using a polaron-based master equation. The polaron approach is capable of bridging the results from the coherent band-like transport regime governed by the Redfield equation to incoherent hopping transport in the classical regime. A non-monotonic dependence of the diffusion coefficient is observed both as a function of temperature and system-phonon coupling strength. In the band-like transport regime, the diffusion coefficient is shown to be linearly proportional to the system-phonon coupling strength, and vanishes at zero coupling due to Anderson localization. In the opposite classical hopping regime, we correctly recover that the dynamics are described by the Fermi's Golden Rule (FGR) and establish that the scaling of the diffusion coefficient depends on the phonon bath relaxation time. In both the hopping and band-like transport regimes, it is demonstrated that at low temperature the zero-point fluctuations of the bath lead to non-zero transport rates, and hence a finite diffusion constant. Application to rubrene and other organic semiconductor materials shows a good agreement with experimental mobility data.

Chee Kong Lee; Jeremy Moix; Jianshu Cao

2014-10-30T23:59:59.000Z

418

A SUPER-EARTH-SIZED PLANET ORBITING IN OR NEAR THE HABITABLE ZONE AROUND A SUN-LIKE STAR  

SciTech Connect (OSTI)

We present the discovery of a super-Earth-sized planet in or near the habitable zone of a Sun-like star. The host is Kepler-69, a 13.7 mag G4V-type star. We detect two periodic sets of transit signals in the 3-year flux time series of Kepler-69, obtained with the Kepler spacecraft. Using the very high precision Kepler photometry, and follow-up observations, our confidence that these signals represent planetary transits is >99.3%. The inner planet, Kepler-69b, has a radius of 2.24{sup +0.44}{sub -0.29} R{sub Circled-Plus} and orbits the host star every 13.7 days. The outer planet, Kepler-69c, is a super-Earth-sized object with a radius of 1.7{sup +0.34}{sub -0.23} R{sub Circled-Plus} and an orbital period of 242.5 days. Assuming an Earth-like Bond albedo, Kepler-69c has an equilibrium temperature of 299 {+-} 19 K, which places the planet close to the habitable zone around the host star. This is the smallest planet found by Kepler to be orbiting in or near the habitable zone of a Sun-like star and represents an important step on the path to finding the first true Earth analog.

Barclay, Thomas; Burke, Christopher J.; Howell, Steve B.; Rowe, Jason F.; Huber, Daniel; Jenkins, Jon M.; Quintana, Elisa V.; Still, Martin; Twicken, Joseph D.; Bryson, Stephen T.; Borucki, William J.; Caldwell, Douglas A.; Clarke, Bruce D.; Christiansen, Jessie L; Coughlin, Jeffrey L. [NASA Ames Research Center, M/S 244-30, Moffett Field, CA 94035 (United States); Isaacson, Howard; Kolbl, Rea; Marcy, Geoffrey W. [Department of Astronomy, University of California at Berkeley, Berkeley, CA 94720 (United States); Ciardi, David [NASA Exoplanet Science Institute, California Institute of Technology, 770 South Wilson Avenue, Pasadena, CA 91125 (United States); Fischer, Debra A. [Department of Astronomy, Yale University, New Haven, CT 06520 (United States); and others

2013-05-10T23:59:59.000Z

419

Stellar activity as noise in exoplanet detection I. Methods and application to solar-like stars and activity cycles  

E-Print Network [OSTI]

The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of the exoplanets around solar-like stars using the radial velocity method. For investigating this activity-caused "jitter" we calculate synthetic spectra using radiative transfer, known stellar atomic and molecular lines, different surface spot configurations, and an added planetary signal. Here, the methods are described in detail, tested and compared to previously published studies. The methods are also applied to investigate the activity jitter in old and young solar-like stars, and over a solar-like activity cycles. We find that the mean full jitter amplitude obtained from the spot surfaces mimicking the solar activity varies during the cycle approximately between 1 m/s and 9 m/s. With a realistic observing frequency a Neptune mass planet on a one year orbit can be reliably recovered. On the other hand, the recovery of an Ea...

Korhonen, H; Piskunov, N; Hackman, T; Juncher, D; Jarvinen, S P; Joergensen, U G

2015-01-01T23:59:59.000Z

420

Tungsten Divertor Erosion in all Metal Devices: Lessons from the ITER-Like Wall of JET and the All Tungsten ASDEX Upgrade  

E-Print Network [OSTI]

Tungsten Divertor Erosion in all Metal Devices: Lessons from the ITER-Like Wall of JET and the All Tungsten ASDEX Upgrade

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


421

Simulation of Tungsten Sputtering with EDGE2D-EIRENE in Low Triangularity L-Mode JET ITER-Like Wall Configuration  

E-Print Network [OSTI]

Simulation of Tungsten Sputtering with EDGE2D-EIRENE in Low Triangularity L-Mode JET ITER-Like Wall Configuration

422

Housing at BC LAW As an admitted student finding housing in Boston may seem like a daunting task. Below you'll  

E-Print Network [OSTI]

in the summer and an ice skating rink in the winter. If you like to run, you'll also be close to the reservoir

Huang, Jianyu

423

Space and time resolved spectroscopy of laser-produced plasmas: A study of density-sensitive x-ray transitions in helium-like and neon-like ions  

SciTech Connect (OSTI)

The determination of level populations and detailed population mechanisms in dense plasmas has become an increasingly important problem in atomic physics. In this work, the density variation of line intensities and level populations in aluminum K-shell and molybdenum and silver L-shell emission spectra have been measured from high-powered, laser-produced plasmas. For each case, the density dependence of the observed line emission is due to the effect of high frequency electron-ion collisions on metastable levels. The density dependent line intensities vary greatly in laser-produced plasmas and can be used to extract detailed information concerning the population kinetics and level populations of the ions. The laser-plasmas had to be fully characterized in order to clearly compare the observed density dependence with atomic theory predictions. This has been achieved through the combined use of new diagnostic instruments and microdot targets which provided simultaneously space, time, and spectrally resolved data. The plasma temperatures were determined from the slope of the hydrogen-like recombination continuum. The time resolved electron density profiles were measured using multiple frame holographic interferometry. Thus, the density dependence of K-shell spectral lines could be clearly examined, independent of assumptions concerning the dynamics of the plasma. In aluminum, the electron density dependence of various helium-like line intensity ratios were measured. Standard collisional radiative equilibrium models fail to account for the observed density dependence measured for the ''He/sub ..cap alpha..//IC'' ratio. Instead, a quasi-steady state atomic model based on a purely recombining plasma is shown to accurately predict the measured density dependence. This same recombining plasma calculation successfully models the density dependence of the high-n ''He/sub ..gamma..//He/sub ..beta../'' and ''He/sub delta//He/sub ..beta../'' helium-like resonance line intensity ratios.

Young, Bruce Kai Fong

1988-09-01T23:59:59.000Z

424

The internal disruption as hard Magnetohydrodynamic limit of 1/2 sawtooth like activity in large helical device  

SciTech Connect (OSTI)

Large helical device (LHD) inward-shifted configurations are unstable to resistive MHD pressure-gradient-driven modes. Sawtooth like activity was observed during LHD operation. The main drivers are the unstable modes 1/2 and 1/3 in the middle and inner plasma region which limit the plasma confinement efficiency of LHD advanced operation scenarios. The aim of the present research is to study the hard MHD limit of 1/2 sawtooth like activity, not observed yet in LHD operation, and to predict its effects on the device performance. Previous investigations pointed out this system relaxation can be an internal disruption [J. Varela et al., 'Internal disruptions and sawtooth like activity in LHD,' 38th EPS Conference on Plasma Physics (2011), P5.077]. In the present work, we simulate an internal disruption; we study the equilibria properties before and after the disruptive process, its effects on the plasma confinement efficiency during each disruptive phase, the relation between the n/m = 1/2 hard MHD events and the soft MHD events, and how to avoid or reduce their adverse effects. The simulation conclusions point out that the large stochastic region in the middle plasma strongly deforms and tears the flux surfaces when the pressure gradient increases above the hard MHD limit. If the instability reaches the inner plasma, the iota profiles will be perturbed near the plasma core and three magnetic islands can appear near the magnetic axis. If the instability is strong enough to link the stochastic regions in the middle plasma (around the half minor radius {rho}) and the plasma core ({rho}<0.25), an internal disruption is driven.

Varela, J. [Department of Physics, Universidad Carlos III, 28911 Leganes, Madrid (Spain); Watanabe, K. Y.; Ohdachi, S. [National Institute for Fusion Science, Oroshi-cho 322-6, Toki 509-5292 (Japan)

2012-08-15T23:59:59.000Z

425

Spectra of In-like Tungsten, $W^{25+}$, from the Shanghai permanent magnet electron beam ion trap  

E-Print Network [OSTI]

Three visible lines of M1 transitions from In-like W were recorded using the Shanghai permanent magnet electron beam ion trap. The experimental wavelengths were measured as 493.84 $\\pm$ 0.15, 226.97 $\\pm$ 0.13 and 587.63 $\\pm$ 0.23 nm (vacuum wavelengths). These results are in good agreement with theoretical predictions obtained using large-scale Relativistic Many-Body Perturbation Theory, in the form of the Flexible Atomic Code, and some explorations with the Muliconfiguration Dirac-Hartree-Fock code GRASP2K.

Li, W; Shi, Z; Fei, Z; R,; Zhao,; Brage, T; Huldt, S; Hutton, R; Zou, Y

2015-01-01T23:59:59.000Z

426

Search for new physics in high pT like-sign dilepton events at CDF II  

SciTech Connect (OSTI)

We present a search for new physics in events with two high pT leptons of the same electric charge, using data with an integrated luminosity of 6.1 fb-1. The observed data are consistent with standard model predictions. We set 95% C.L. lower limits on the mass of doubly-charged scalars decaying to like-sign dileptons, mH > 190 - 245 GeV/c2, depending on the decay mode and coupling.

Aaltonen, T [Helsinki Inst. of Phys.; Alvarez Gonzalez, B [Oviedo U., Cantabria Inst. of Phys.; Amerio, S [INFN, Padua; Amidei, D [Michigan U.; Anastassov, A [Northwestern U.; Annovi, A [Frascati; Antos, J [Comenius U.; Apollinari, G [Fermilab; Appel, J A [Fermilab; Apresyan, A [Purdue U.; Arisawa, T [Waseda U., Dubna, JINR

2011-10-25T23:59:59.000Z

427

A RING E3?substrate complex poised for ubiquitin-like protein transfer: structural insights into cullin-RING ligases  

SciTech Connect (OSTI)

How RING E3 ligases mediate E2-to-substrate ubiquitin-like protein (UBL) transfer remains unknown. Here we address how the RING E3 RBX1 positions NEDD8's E2 (UBC12) and substrate (CUL1). We find that existing structures are incompatible with CUL1 NEDD8ylation and report a new conformation of RBX1 that places UBC12 adjacent to CUL1. We propose RING domain rotation as a general mechanism for UBL transfer for the largest family of E3s.

Calabrese, Matthew F.; Scott, Daniel C.; Duda, David M.; Grace, Christy R.R.; Kurinov, Igor; Kriwacki, Richard W.; Schulman, Brenda A. (Cornell); (SJCH)

2011-09-20T23:59:59.000Z

428

Optimum PID Control of Multi-wing Attractors in A Family of Lorenz-like Chaotic Systems  

E-Print Network [OSTI]

Multi-wing chaotic attractors are highly complex nonlinear dynamical systems with higher number of index-2 equilibrium points. Due to the presence of several equilibrium points, randomness of the state time series for these multi-wing chaotic systems is higher than that of the conventional double wing chaotic attractors. A real coded Genetic Algorithm (GA) based global optimization framework has been presented in this paper, to design optimum PID controllers so as to control the state trajectories of three different multi-wing Lorenz like chaotic systems viz. Lu, Rucklidge and Sprott-1 system.

Anish Acharya; Saptarshi Das; Indranil Pan

2012-10-30T23:59:59.000Z

429

Point-like gamma ray sources as signatures of distant accelerators of ultra high energy cosmic rays  

E-Print Network [OSTI]

We discuss the possibility of observing distant accelerators of ultra high energy cosmic rays in synchrotron gamma rays. Protons propagating away from their acceleration sites produce extremely energetic electrons during photo-pion interactions with cosmic microwave background photons. If the accelerator is embedded in a magnetized region, these electrons will emit high energy synchrotron radiation. The resulting synchrotron source is expected to be point-like and detectable in the GeV-TeV energy range if the magnetic field is at the nanoGauss level.

S. Gabici; F. A. Aharonian

2005-05-22T23:59:59.000Z

430

Development of a Neutron Diffraction Based Experiemental Capability for Investigating Hydraulic Fracturing for EGS-like Conditions  

SciTech Connect (OSTI)

Hydraulic fracturing to enhance formation permeability is an established practice in the Oil & Gas (O&G) industry and is expected to be an enabler for EGS. However, it is rarely employed in conventional geothermal systems and there are significant questions regarding the translation of practice from O&G to both conventional geothermal and EGS applications. Lithological differences(sedimentary versus crystalline rocks, significantly greater formation temperatures and different desired fracture characteristics are among a number of factors that are likely to result in a gap of understanding of how to manage hydraulic fracturing practice for geothermal. Whereas the O&G community has had both the capital and the opportunity to develop its understanding of hydraulic fracturing operations empirically in the field as well through extensive R&D efforts, field testing opportunities for EGS are likely to be minimal due to the high expense of hydraulic fracturing field trials. A significant portion of the knowledge needed to guide the management of geothermal/EGS hydraulic fracturing operations will therefore likely have to come from experimental efforts and simulation. This paper describes ongoing efforts at Oak Ridge National Laboratory (ORNL) to develop an experimental capability to map the internal stresses/strains in core samples subjected to triaxial stress states and temperatures representative of EGS-like conditions using neutron diffraction based strain mapping techniques. This capability is being developed at ORNL\\'s Spallation Neutron Source, the world\\'s most powerful pulsed neutron source and is still in a proof of concept phase. A specialized pressure cell has been developed that permits independent radial and axial fluid pressurization of core samples, with axial flow through capability and a temperature rating up to 300 degrees C. This cell will ultimately be used to hydraulically pressurize EGS-representative core samples to conditions of imminent fracture and map the associated internal strain states of the sample. This will hopefully enable a more precise mapping of the rock material failure envelope, facilitate a more refined understanding of the mechanism of hydraulically induced rock fracture, particularly in crystalline rocks, and serve as a platform for validating and improving fracture simulation codes. The elements of the research program and preliminary strain mapping results of a Sierra White granite sample subjected only to compressive loading will be discussed in this paper.

Polsky, Yarom [ORNL] [ORNL; Anovitz, Lawrence {Larry} M [ORNL; An, Ke [ORNL] [ORNL; Carmichael, Justin R [ORNL] [ORNL; Bingham, Philip R [ORNL] [ORNL; Dessieux Jr, Luc Lucius [ORNL] [ORNL

2013-01-01T23:59:59.000Z

431

Investigation of the exfoliation-like attack mechanism in relation to Al?Mg?Si alloy microstructure  

SciTech Connect (OSTI)

A directed attack, denominated as exfoliation-like attack (ELA), is observed in Al-Mg-Si alloy AA6016 exposed to aggressive electrolyte conditions. This localized corrosion propagates restricted to a specific plane. Immersion experiments combined with in situ microtomography and SEM/EBSD characterization showed that the ELA path does not follow aligned intermetallic phases, texture or grain boundaries. Si concentration variation in solid solution is one factor which correlates with the propagation of this attack. In a model alloy, the influence of Si composition gradients on corrosion susceptibility was demonstrated in mild neutral electrolytes (oxide layer influence) and in aggressive acidic conditions (active dissolution rates).

Eckermann, Fabian; Suter, Thomas; Uggowitzer, Peter J.; Afseth, Andreas; Schmutz, Patrik (EMMPA); (ETH Zurich); (Alcan)

2008-09-17T23:59:59.000Z

432

Numerical solutions of the quantum Hamilton-Jacobi equation and WKB like representations for one dimensional wave functions  

E-Print Network [OSTI]

By means of numerical solutions of the quantum Hamilton Jacobi equation, a general WKB-like representation for one-dimensional wave functions is obtained. This representation is unique in the classically forbidden regions, while in the allowed one, each wave function corresponds to a one parameter family of solutions of the QHJE. The method has been applied to various systems, with different energies and initial conditions. In all investigated cases, the wave functions so obtained accurately reproduce the solutions of the Schr\\"odinger equation, analytically or numerically computed by other ways. Some results for harmonic oscillator and radial Coulomb motion are presented.

Mario Fusco Girard

2014-03-04T23:59:59.000Z

433

Ultrafast and efficient coherence creation in ?-like atomic systems driven by nonlinearly chirped few-cycle pulses  

E-Print Network [OSTI]

We report an ultrafast and efficient way to create the maximum coherence between the two lower states in a -like atomic systems, driven by two nonlinearly chirped few-cycle pulses. The phenomenon of coherent population trapping and electromagnetically induced population transfer are investigated by solving the appropriate density matrix equations without invoking the rotating wave approximation. The robustness of the scheme for maximum coherence against the variation of the laser parameters are tested numerically. We also demonstrate that the proposed scheme could be used to obtain complete population transfer to an initially empty ground state.

Amarendra K. Sarma; Parvendra Kumar

2011-11-17T23:59:59.000Z

434

Near infrared emission from molecule-like silver clusters confined in zeolite A assisted by thermal activation  

SciTech Connect (OSTI)

Strong and broad near infrared (NIR) emission peaked at ?855?nm upon optimal excitation at 342?nm has been observed from molecule-like silver clusters (MLSCs) confined in zeolite A assisted by thermal activation. To the best of our knowledge, this is the first observation of NIR emission peaked at longer than 800?nm from MLSCs confined in solid matrices. The decay time of the NIR emission is over 10 ?s, which indicates that it is a spin-forbidden transition. The ?855?nm NIR emission shows strong dependence on the silver loading concentration and the thermal activation temperature.

Lin, Hui, E-mail: linh8112@163.com; Imakita, Kenji; Rong Gui, Sa Chu; Fujii, Minoru, E-mail: fujii@eedept.kobe-u.ac.jp [Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501 (Japan)

2014-07-07T23:59:59.000Z

435

"It's Like Giving Us a Car, Only Without the Wheels": Performance of Latina Students at an Early College High School  

E-Print Network [OSTI]

School. (December 2011) Leslie Ann Locke, B.S.; M.L.S, University of Minnesota?Twin Cities Chair of Advisory Committee: Dr. Kathryn McKenzie This dissertation presents the results from an empirical study of the perspectives of Latina students who... ?IT?S LIKE GIVING US A CAR, ONLY WITHOUT THE WHEELS?: PERFORMANCE OF LATINA STUDENTS AT AN EARLY COLLEGE HIGH SCHOOL A Dissertation by LESLIE ANN LOCKE Submitted to the Office of Graduate Studies of Texas A&M University...

Locke, Leslie Ann

2012-02-14T23:59:59.000Z

436

Initial steps in adding X11 to your MacBook: 1. Locate the DVD that came with your computer labeled something like "MacBook  

E-Print Network [OSTI]

something like "MacBook Mac OS X Install Disc 1". Put it into the DVD/CD slot and you should see a Finder window that looks something like the one below. You want none of the items shown, rather, you need the Install button. (The button reads "Upgrade" here but that's because I already have X11 installed

Richardson, David

437

Regarding Student entrance procedures for April 2011 entrance We would like to inform you about the entrance procedures March 16 to March 18, 2011. If you  

E-Print Network [OSTI]

Regarding Student entrance procedures for April 2011 entrance We would like to inform you about the entrance procedures March 16 to March 18, 2011. If you have any difficulties completing this procedure postal mail by March 18, 2011 If you would like to send documents for the entrance procedure by postal

Yamamoto, Hirosuke

438

Examining the function of the residue C207 in the cysteine desulfurase reaction of an essential NifS-like protein from  

E-Print Network [OSTI]

NifS-like protein from Synechocystis PCC6803 Anthony Paul Trace, McNair Scholar, Pennsylvania State analysis showed the NifS protein is essential to the production of many metalloenzymes, specifically iron Synechocystis sp. PCC 6803 encodes three NifS-like proteins: Slr0077, Slr0387, and Sll0704. Genetic experiments

Omiecinski, Curtis

439

Bioanalytical characterisation of multiple endocrine-and dioxin-like activities in1 sediments from reference and impacted small rivers2  

E-Print Network [OSTI]

1 Bioanalytical characterisation of multiple endocrine- and dioxin-like activities in1 sediments-mediated22 activities, namely estrogen (ER), androgen (AR), dioxin (AhR) and pregnane X (PXR)23 receptors dioxin-like29 activities. Interestingly, high PXR and (anti)AR activities were detected; however

Paris-Sud XI, Université de

440

Hyperfine-induced effects on the linear polarization of the K$\\alpha_1$ emission from helium-like ions  

E-Print Network [OSTI]

The linear polarization of the characteristic photon emission from few-electron ions is studied for its sensitivity with regard to the nuclear spin and magnetic moment of the ions. Special attention is paid, in particular, to the K$\\alpha_1$ ($1s 2p_{3/2} ^{1,3}P_{1,2} \\to 1s^2 ^1S_0$) decay of selected helium-like ions following the radiative electron capture into initially hydrogen-like species. Based on the density matrix theory, a unified description is developed that includes both, the many-electron and hyperfine interactions as well as the multipole-mixing effects arising from the expansion of the radiation field. It is shown that the polarization of the K$\\alpha_1$ line can be significantly affected by the mutipole mixing between the leading $M2$ and hyperfine-induced $E1$ components of $1s2p ^3P_2, F_i \\to 1s^2 ^1S_0, F_f$ transitions. This $E1$-$M2$ mixing strongly depends on the nuclear properties of the considered isotopes and can be addressed experimentally at existing heavy-ion storage rings.

Surzhykov, Andrey; Sthlker, Thomas; Fritzsche, Stephan

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "likes picasolar wholly" from the National Library of EnergyBeta (NLEBeta).
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441

Quasicontinuous x-ray laser with {lambda}=10.8 nm in Pd-like tungsten using a nanostructured target  

SciTech Connect (OSTI)

A new-generation x-ray laser project is explained. It is based on the transitions in Pd-like ions in nanoplasmas. The gain coefficient is calculated for the 4d{sub 3/2}{sup 9}5d{sub 3/2}[J=0]-4d{sub 3/2}{sup 9}5p{sub 1/2}[J=1] transition ({lambda}{approx_equal}10.8 nm) in Pd-like tungsten. It is suggested that a cylindrical target made of nanostructured tungsten is pumped in the longitudinal direction by a laser pulse with energy 1-2 keV and duration {approx}500 ps. For this pump pulse the target density and dimensions are calculated, as well as the temporal variations of the optimal plasma parameters for attaining gL {approx} 14. The energy yield in the 10.8-nm line is more than 10{sup 20} eV.

Ivanova, E. P. [Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow Region (Russian Federation)

2010-10-15T23:59:59.000Z

442

Simulation of the electron diffraction patterns from needle/rod-like precipitates in Al-Mg-Si alloys  

SciTech Connect (OSTI)

The origin of the selected area electron diffraction (SAED) patterns from needle/rod-like metastable precipitates embedded in {alpha}-Al matrix in Al-Mg-Si alloys have been studied via an example of {beta}'' phase. In addition, the SAED pattern from {beta}'' phase has been simulated with significant improvement in comparison with the previous simulations. Three important factors, i.e. the 12 crystallographically equivalent variants of {beta}'' phase in the {alpha}-Al matrix due to the highly symmetric f.c.c. structure of {alpha}-Al, the coherence between {beta}'' phase and the {alpha}-Al matrix, and the double diffractions from the {alpha}-Al matrix and {beta}'' phase, are proved to contribute to the special square-shaped features in the SAED patterns from {beta}'' phase and thus fully taken into account in the simulation. An improved but simplified method for simulating the SAED patterns from needle/rod-like metastable precipitates has been developed. This method is further verified by simulating the SAED pattern from Q phase. The simulated SAED patterns from both {beta}'' and Q phases fit the experimentally determined patterns very well. - Highlights: {yields}An improved method has been developed to simulate the SADPs of Al alloys. {yields}The formation mechanism of SADPs of Al alloys has been systemically studied. {yields}Double diffraction contributes to the formation of the SADPs of Al alloys.

Li Kai [State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 (China); Song Min, E-mail: Min.Song.Th05@Alum.Dartmouth.ORG [State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 (China); Du Yong [State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 (China); Zhang Hong [School of Materials Science and Engineering, Central South University, Changsha 410083 (China)

2011-09-15T23:59:59.000Z

443

X-ray Flashes or soft Gamma-ray Bursts? The case of the likely distant XRF 040912  

E-Print Network [OSTI]

In this work, we present a multi-wavelength study of XRF 040912, aimed at measuring its distance scale and the intrinsic burst properties. We performed a detailed spectral and temporal analysis of both the prompt and the afterglow emission and we estimated the distance scale of the likely host galaxy. We then used the currently available sample of XRFs with known distance to discuss the connection between XRFs and classical Gamma-ray Bursts (GRBs). We found that the prompt emission properties unambiguously identify this burst as an XRF, with an observed peak energy of E_p=17+/-13 keV and a burst fluence ratio S(2-30keV)/S(30-400keV)>1. A non-fading optical source with R~24 mag and with an apparently extended morphology is spatially consistent with the X-ray afterglow, likely the host galaxy. XRF 040912 is a very dark burst since no afterglow optical counterpart is detected down to R>25 mag (3 sigma limiting magnitude) at 13.6 hours after the burst. The host galaxy spectrum detected from 3800A to 10000A, shows...

Stratta, G; Butler, N; Atteia, J L; Gendre, B; Pelangeon, A; Malacrino, F; Mellier, Y; Kann, D A; Klose, S; Zeh, A; Masetti, N; Palazzi, E; Gorosabel, J; Castro-Tirado, A J; De Postigo, A U; Jelinek, M; Cepa, J; Castaneda, H; Martnez-Delgado, D; Bor, M; Braga, J; Crew, G; Donaghy, T Q; Dezalay, J P; Doty, J; Fenimore, E E; Galassi, M; Graziani, C; Jernigan, J G; Kawai, N; Lamb, D Q; Levine, A; Manchanda, J; Martel, F; Matsuoka, M; Nakagawa, Y; Olive, J F; Pizzichini, G; Prigozhin, G Y; Ricker, G; Sakamoto, T; Shirasaki, Y; Sugita, S; Suzuki, M; Takagishi, K; Tamagawa, T; Vanderspek, R; Villasenor, J; Woosley, S E; Yamauchi, M; Yoshida, A

2006-01-01T23:59:59.000Z

444

Comparing modern and Pleistocene ENSO-like influences in NW Argentina using nonlinear time series analysis methods  

E-Print Network [OSTI]

Higher variability in rainfall and river discharge could be of major importance in landslide generation in the north-western Argentine Andes. Annual layered (varved) deposits of a landslide dammed lake in the Santa Maria Basin (26 deg S, 66 deg W) with an age of 30,000 14C years provide an archive of precipitation variability during this time. The comparison of these data with present-day rainfall observations tests the hypothesis that increased rainfall variability played a major role in landslide generation. A potential cause of such variability is the El Nino/Southern Oscillation (ENSO). The causal link between ENSO and local rainfall is quantified by using a new method of nonlinear data analysis, the quantitative analysis of cross recurrence plots (CRP). This method seeks similarities in the dynamics of two different processes, such as an ocean-atmosphere oscillation and local rainfall. Our analysis reveals significant similarities in the statistics of both modern and palaeo-precipitation data. The similarities in the data suggest that an ENSO-like influence on local rainfall was present at around 30,000 14C years ago. Increased rainfall, which was inferred from a lake balance modeling in a previous study, together with ENSO-like cyclicities could help to explain the clustering of landslides at around 30,000 14C years ago.

N. Marwan; M. H. Trauth; M. Vuille; J. Kurths

2003-03-24T23:59:59.000Z

445

A Shell of Thermal X-ray Emission Associated with the Young Crab-like Remnant 3C58  

E-Print Network [OSTI]

Deep X-ray imaging spectroscopy of the bright pulsar wind nebula 3C58 confirms the existence of an embedded thermal X-ray shell surrounding the pulsar PSR J0205+6449. Radially resolved spectra obtained with the XMM-Newton telescope are well-characterized by a power-law model with the addition of a soft thermal emission component in varying proportions. These fits reproduce the well-studied increase in the spectral index with radius attributed to synchrotron burn-off of high energy electrons. Most interestingly, a radially resolved thermal component is shown to map out a shell-like structure ~6' in diameter. The presence of a strong emission line corresponding to the Ne IX He-like transition requires an overabundance of ~3 x [Ne/Ne(sun)] in the Raymond-Smith plasma model. The best-fit temperature kT ~ 0.23 keV is essentially independent of radius for the derived column density of N_H = (4.2 +/- 0.1)E21 per cm squared. Our result suggests that thermal shells can be obscured in the early evolution of a supernova...

Gotthelf, E V; Newburgh, L

2006-01-01T23:59:59.000Z

446

Energy levels, oscillator strengths, and radiative rates for Si-like Zn XVII, Ga XVIII, Ge XIX, and As XX  

SciTech Connect (OSTI)

The energy levels, oscillator strengths, line strengths, and transition probabilities for transitions among the terms belonging to the 3s{sup 2}3p{sup 2}, 3s3p{sup 3}, 3s{sup 2}3p3d, 3s{sup 2}3p4s, 3s{sup 2}3p4p and 3s{sup 2}3p4d configurations of silicon-like ions (Zn XVII, Ga XVIII, Ge XIX, and As XX) have been calculated using the configuration-interaction code CIV3. The calculations have been carried out in the intermediate coupling scheme using the BreitPauli Hamiltonian. The present calculations have been compared with the available experimental data and other theoretical calculations. Most of our calculations of energy levels and oscillator strengths (in length form) show good agreement with both experimental and theoretical data. Lifetimes of the excited levels have also been calculated. -- Highlights: We have calculated the fine-structure energy levels of Si-like Zn, Ga, Ge and As. The calculations are performed using the configuration interaction method (CIV3). We have calculated the oscillator strengths, line strengths and transition rates. The wavelengths of the transitions are listed in this article. We also have made comparisons between our data and other calculations.

Abou El-Maaref, A., E-mail: aahmh@hotmail.com [Physics Department, Faculty of Science, Al-Azhar University, Assuit (Egypt); Allam, S.H.; El-Sherbini, Th.M. [Laboratory of Lasers and New Materials, Physics Department, Faculty of Science, Cairo University, Giza (Egypt)] [Laboratory of Lasers and New Materials, Physics Department, Faculty of Science, Cairo University, Giza (Egypt)

2014-01-15T23:59:59.000Z

447

The Effect of Lunar-like Satellites on the Orbital Infrared Light Curves of Earth-analog Planets  

E-Print Network [OSTI]

We investigate the influence of lunar-like satellites on the infrared orbital light curves of Earth-analog extra-solar planets. Such light curves will be obtained by NASA's Terrestrial Planet Finder (TPF) and ESA's Darwin missions as a consequence of repeat observations to confirm the companion status of a putative planet. We use an energy balance model to calculate disk-averaged infrared (bolometric) fluxes from planet-satellite systems over a full orbital period (one year). The satellites are assumed to lack an atmosphere, have a low thermal inertia like that of the Moon and span a range of plausible radii. The planets are assumed to have thermal and orbital properties that mimic those of the Earth while their obliquities and orbital longitudes of inferior conjunction remain free parameters. Even if the gross thermal properties of the planet can be independently constrained (e.g. via spectroscopy or visible-wavelength detection of specular glint from a surface ocean) only the largest (approximately Mars-siz...

Moskovitz, Nicholas A; Williams, Darren

2008-01-01T23:59:59.000Z

448

KEPLER-63b: A GIANT PLANET IN A POLAR ORBIT AROUND A YOUNG SUN-LIKE STAR  

SciTech Connect (OSTI)

We present the discovery and characterization of a giant planet orbiting the young Sun-like star Kepler-63 (KOI-63, m{sub Kp} = 11.6, T{sub eff} = 5576 K, M{sub *} = 0.98 M{sub ?}). The planet transits every 9.43 days, with apparent depth variations and brightening anomalies caused by large starspots. The planet's radius is 6.1 0.2 R{sub ?}, based on the transit light curve and the estimated stellar parameters. The planet's mass could not be measured with the existing radial-velocity data, due to the high level of stellar activity, but if we assume a circular orbit, then we can place a rough upper bound of 120 M{sub ?} (3?). The host star has a high obliquity (? = 104), based on the Rossiter-McLaughlin effect and an analysis of starspot-crossing events. This result is valuable because almost all previous obliquity measurements are for stars with more massive planets and shorter-period orbits. In addition, the polar orbit of the planet combined with an analysis of spot-crossing events reveals a large and persistent polar starspot. Such spots have previously been inferred using Doppler tomography, and predicted in simulations of magnetic activity of young Sun-like stars.

Sanchis-Ojeda, Roberto; Winn, Joshua N.; Albrecht, Simon [Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Marcy, Geoffrey W.; Isaacson, Howard [Astronomy Department, University of California, Berkeley, CA 94720 (United States); Howard, Andrew W. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Johnson, John Asher [Department of Astronomy, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States); Torres, Guillermo; Carter, Joshua A.; Dawson, Rebekah I.; Geary, John C. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Campante, Tiago L.; Chaplin, William J.; Davies, Guy R. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Lund, Mikkel N. [Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark); Buchhave, Lars A. [Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen (Denmark); Everett, Mark E. [National Optical Astronomy Observatory, 950 N. Cherry Ave, Tucson, AZ 85719 (United States); Fischer, Debra A. [Astronomy Department, Yale University, New Haven, CT (United States); Gilliland, Ronald L. [Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Horch, Elliott P. [Southern Connecticut State University, New Haven, CT 06515 (United States); and others

2013-09-20T23:59:59.000Z

449

Determination of the positions and orientations of concentrated rod-like colloids from 3D microscopy data  

E-Print Network [OSTI]

Confocal microscopy in combination with real-space particle tracking has proven to be a powerful tool in scientific fields such as soft matter physics, materials science and cell biology. However, 3D tracking of anisotropic particles in concentrated phases remains not as optimized compared to algorithms for spherical particles. To address this problem, we developed a new particle-fitting algorithm that can extract the positions and orientations of fluorescent rod-like particles from three dimensional confocal microscopy data stacks, even when the fluorescent signals of the particles overlap considerably. We demonstrate that our algorithm correctly identifies all five coordinates of uniaxial particles in both a concentrated disordered phase and a liquid-crystalline smectic-B phase. Apart from confocal microscopy images, we also demonstrate that the algorithm can be used to identify nanorods in 3D electron tomography reconstructions. Lastly, we determined the accuracy of the algorithm using both simulated and experimental confocal microscopy data-stacks of diffusing silica rods in a dilute suspension. This novel particle-fitting algorithm allows for the study of structure and dynamics in both dilute and dense liquid-crystalline phases (such as nematic, smectic and crystalline phases) as well as the study of the glass transition of rod-like particles in three dimensions on the single particle level.

T. H. Besseling; M. Hermes; A. Kuijk; B. de Nijs; T. -S. Deng; M. Dijkstra; A. Imhof; A. van Blaaderen

2014-06-19T23:59:59.000Z

450

The CoRoT target HD175726: an active star with weak solar-like oscillations  

E-Print Network [OSTI]

Context. The CoRoT short runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report observations of the star HD175726 that lasted for 27 days during the first short run of the mission. The time series reveals a high-activity signal and the power spectrum presents an excess due to solar-like oscillations with a low signal-to-noise ratio. Aims. Our aim is to identify the most efficient tools to extract as much information as possible from the power density spectrum. Methods. The most productive method appears to be the autocorrelation of the time series, calculated as the spectrum of the filtered spectrum. This method is efficient, very rapid computationally, and will be useful for the analysis of other targets, observed with CoRoT or with forthcoming missions such as Kepler and Plato. Results. The mean large separation has been measured to be 97.2+-0.5 microHz, slightly below the expected value determined from solar scaling laws.We also show stro...

Mosser, B; Appourchaux, T; Barban, C; Baudin, F; Boumier, P; Bruntt, H; Catala, C; Deheuvels, S; Garca, R A; Gaulme, P; Regulo, C; Roxburgh, I; Samadi, R; Verner, G; Auvergne, M; Baglin, A; Ballot, J; Benomar, O; Mathur, S

2009-01-01T23:59:59.000Z

451

Energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 21?Z?28  

SciTech Connect (OSTI)

We report calculations of energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 21?Z?28. The General-Purpose Relativistic Atomic Structure Package is adopted for calculating energy levels and radiative rates, while for determining the collision strengths and subsequently the excitation rates, the Dirac Atomic R-matrix Code is used. Oscillator strengths, radiative rates, and line strengths are listed for all E1, E2, M1, and M2 transitions among the lowest 24 levels of the Li-like ions considered. Collision strengths have been averaged over a Maxwellian velocity distribution, and the effective collision strengths obtained are given over a wide temperature range up to 10{sup 7.8} K. Additionally, lifetimes are listed for all calculated levels of these ions. Finally, extensive comparisons are made with results available in the literature, as well as with our analogous calculations for all parameters with the Flexible Atomic Code, in order to assess the accuracy of the results.

Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk; Keenan, Francis P.

2012-11-15T23:59:59.000Z

452

Energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 12?Z?20  

SciTech Connect (OSTI)

We report calculations of energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 12?Z?20. The GRASP (general-purpose relativistic atomic structure package) is adopted for calculating energy levels and radiative rates, while for determining the collision strengths and subsequently the excitation rates, the Dirac atomic R-matrix code is used. Oscillator strengths, radiative rates, and line strengths are reported for all E1, E2, M1, and M2 transitions among the lowest 24 levels of the Li-like ions considered. Collision strengths have been averaged over a Maxwellian velocity distribution, and the effective collision strengths obtained are reported over a wide temperature range up to 10{sup 7.4} K. Additionally, lifetimes are also listed for all calculated levels of the ions. Finally, extensive comparisons are made with results available in the literature, as well as with our parallel calculations for all parameters with the Flexible Atomic Code, in order to assess the accuracy of the reported results.

Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk; Keenan, Francis P.

2013-03-15T23:59:59.000Z

453

Importance of Biologically Active Aurora-like Ultraviolet Emission: Stochastic Irradiation of Earth and Mars by Flares and Explosions  

E-Print Network [OSTI]

(Abridged) We show that sizeable fractions of incident ionizing radiation from stochastic astrophysical sources can be redistributed to biologically and chemically important UV wavelengths, a significant fraction of which can reach the surface. This redistribution is mediated by secondary electrons, resulting from Compton scattering and X-ray photoabsorption, with energies low enough to excite atmospheric molecules and atoms, resulting in a rich aurora-like spectrum. We calculate the fraction of energy redistributed into biologically and chemically important wavelength regions for spectra characteristic of stellar flares and supernovae using a Monte-Carlo transport code written for this problem and then estimate the fraction of this energy that is transmitted from the atmospheric altitudes of redistribution to the surface for a few illustrative cases. Redistributed fractions are found to be of order 1%, even in the presence of an ozone shield. This result implies that planetary organisms will be subject to mutationally significant, if intermittent, fluences of UV-B and harder radiation even in the presence of a narrow-band UV shield like ozone. We also calculate the surficial transmitted fraction of ionizing radiation and redistributed ultraviolet radiation for two illustrative evolving Mars atmospheres whose initial surface pressures were 1 bar. Our results suggest that coding organisms on planets orbiting low-mass stars (and on the early Earth) may evolve very differently than on contemporary Earth, with diversity and evolutionary rate controlled by a stochastically varying mutation rate and frequent hypermutation episodes.

David S. Smith; John Scalo; J. Craig Wheeler

2003-07-30T23:59:59.000Z

454

Noise-like pulse based on dissipative four-wave-mixing with photonic crystal fiber filled by reduced graphene oxide  

E-Print Network [OSTI]

A noise-like pulse based on dissipative four-wave-mixing in a fiber cavity with photonic crystal fiber filled by reduced graphene oxide is proposed. Due to large evanescent field provided by 3 cm photonic crystal fiber and ultrahigh nonlinearity of reduced graphene oxide, this mixed structure provides excellent saturable absorption and high nonlinearity, which are necessary for generating four-wave-mixing (FWM). We experimentally prove that the mode-locked laser transfers its energy from center wavelength to sidebands through degenerate FWM, and new frequencies are generated via cascaded FWM among those sidebands. During this process, the frequencies located in various orders of longitudinal modes of the ring cavity are supported, and others are suppressed due to destructive interference. As the longitudinal modes of the cavity with a spacing of 6.874 MHz are partially supported, the loosely fixed phase relationship results in noise-like pulse with a coherent peak of 530 fs locating on a pedestal of 730.693 p...

Gao, Lei; Huang, Wei

2014-01-01T23:59:59.000Z

455

ATP-binding cassette-like transporters are involved in the transport of lignin precursors across plasma and vacuolar membranes  

SciTech Connect (OSTI)

Lignin is a complex biopolymer derived primarily from the condensation of three monomeric precursors, the monolignols. The synthesis of monolignols occurs in the cytoplasm. To reach the cell wall where they are oxidized and polymerized, they must be transported across the cell membrane. However, the molecular mechanisms underlying the transport process are unclear. There are conflicting views about whether the transport of these precursors occurs by passive diffusion or is an energized active process; further, we know little about what chemical forms are required. Using isolated plasma and vacuolar membrane vesicles prepared from Arabidopsis, together with applying different transporter inhibitors in the assays, we examined the uptake of monolignols and their derivatives by these native membrane vesicles. We demonstrate that the transport of lignin precursors across plasmalemma and their sequestration into vacuoles are ATP-dependent primary-transport processes, involving ATP-binding cassette-like transporters. Moreover, we show that both plasma and vacuolar membrane vesicles selectively transport different forms of lignin precursors. In the presence of ATP, the inverted plasma membrane vesicles preferentially take up monolignol aglycones, whereas the vacuolar vesicles are more specific for glucoconjugates, suggesting that the different ATP-binding cassette-like transporters recognize different chemical forms in conveying them to distinct sites, and that glucosylation of monolignols is necessary for their vacuolar storage but not required for direct transport into the cell wall in Arabidopsis.

Miao, Y.C.; Liu, C.

2010-12-28T23:59:59.000Z

456

A Gamma-Ray Burst/Pulsar for Cosmic-Ray Positrons with a Dark Matter-like Spectrum  

E-Print Network [OSTI]

We propose that a nearby gamma-ray burst (GRB) or GRB-like (old, single and short-lived) pulsar/supernova remnant/microquasar about 10^{5-6} years ago may be responsible for the excesses of cosmic-ray positrons and electrons recently observed by the PAMELA, ATIC/PPB-BETS, Fermi and HESS experiments. We can reproduce the smooth Fermi/HESS spectra as well as the spiky ATIC/PPB-BETS spectra. The spectra have a sharp cutoff that is similar to the dark matter predictions, sometimes together with a line (not similar), since higher energy cosmic-rays cool faster where the cutoff/line energy marks the source age. A GRB-like astrophysical source is expected to have a small but finite spread in the cutoff/line as well as anisotropy in the cosmic-ray and diffuse gamma-ray flux, providing a method for the Fermi and future CALET experiments to discriminate between dark matter and astrophysical origins.

Kunihito Ioka

2010-06-15T23:59:59.000Z

457

Calculation of resistive magnetohydrodynamics and two-fluid tearing modes by example of reversed-field-pinch-like plasma  

SciTech Connect (OSTI)

An algorithm suitable for numerical solution of linear eigenmode problems in resistive magnetohydrodynamics (MHD) and two-fluid MHD models without prior approximations is presented. For these plasma models, sets of equations suitable for numerical solution are derived and the details of the algorithm of this solution are given. The algorithm is general and is suitable for solution of boundary (eigenmode) problems for different plasma configurations. It is most effective, however, in one-dimensional models since the grid size has to be sufficiently small in order to resolve the tearing layer together with the scale of the size of the plasma. The technique is applied for solving for tearing eigenmodes in reversed field pinch (RFP) -like plasma in plane geometry. Results of resistive MHD and two-fluid models are compared in this case, showing that the two-fluid effects on tearing modes in RFPs are sizable.

Svidzinski, V. A.; Li, H. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2008-05-15T23:59:59.000Z

458

Curvature Effect on the Capacitance of Electric Double Layers at Ionic Liquid/Onion-Like Carbon Interfaces  

SciTech Connect (OSTI)

Recent experiments have revealed that onion-like carbons (OLCs) offer high energy density and charging/discharging rates when used as the electrodes in supercapacitors. To understand the physical origin of this phenomenon, molecular dynamics simulations were performed for a room-temperature ionic liquid near idealized spherical OLCs with radii ranging from 0.356 to 1.223 nm. We find that the surface charge density increases almost linearly with the potential applied on electric double layers (EDLs) near OLCs. This leads to a nearly flat shape of the differential capacitance versus the potential, unlike the bell or camel shape observed on planar electrodes. Moreover, our simulations reveal that the capacitance of EDLs on OLCs increases with the curvature or as the OLC size decreases, in agreement with experimental observations. The curvature effect is explained by dominance of charge overscreening over a wide potential range and increased ion density per unit area of electrode surface as the OLC becomes smaller.

Feng, Guang [ORNL; Jiang, Deen [ORNL; Cummings, Peter T [ORNL

2012-01-01T23:59:59.000Z

459

Theory on excitations of drift Alfvn waves by energetic particles. II. The general fishbone-like dispersion relation  

SciTech Connect (OSTI)

The theoretical framework of the general fishbone-like dispersion relation (GFLDR), presented and discussed in the Companion Paper [Phys. Plasmas 21, 072120 (2014)], is applied to cases of practical interest of shear/drift Alfvn waves (SAWs/DAWs) excited by energetic particles (EPs) in toroidal fusion plasmas. These applications demonstrate that the GFLDR provides a unified approach that allows analytical and numerical calculations of stability properties, as well as mode structures and, in general, nonlinear evolutions, based on different models and with different levels of approximation. They also show the crucial importance of kinetic descriptions, accurate geometries and boundary conditions for predicting linear as well as nonlinear SAW/DAW and EP behaviors in burning plasmas. Thus, the GFLDR unified theoretical framework elevates the interpretative capability for both experimental and numerical simulation results.

Zonca, Fulvio, E-mail: fulvio.zonca@enea.it [ENEA C. R. Frascati, Via E. Fermi 45, CP 65-00044 Frascati (Italy); Institute for Fusion Theory and Simulation and Department of Physics, Zhejiang University, Hangzhou 310027 (China); Chen, Liu [Institute for Fusion Theory and Simulation and Department of Physics, Zhejiang University, Hangzhou 310027 (China); Department of Physics and Astronomy, University of California, Irvine, California 92697-4575 (United States)

2014-07-15T23:59:59.000Z

460

Modeling most likely pathways for smuggling radioactive and special nuclear materials on a worldwide multimodal transportation network  

SciTech Connect (OSTI)

Nuclear weapons proliferation is an existing and growing worldwide problem. To help with devising strategies and supporting decisions to interdict the transport of nuclear material, we developed the Pathway Analysis, Threat Response and Interdiction Options Tool (PATRIOT) that provides an analytical approach for evaluating the probability that an adversary smuggling radioactive or special nuclear material will be detected during transit. We incorporate a global, multi-modal transportation network, explicit representation of designed and serendipitous detection opportunities, and multiple threat devices, material types, and shielding levels. This paper presents the general structure of PATRIOT, and focuses on the theoretical framework used to model the reliabilities of all network components that are used to predict the most likely pathways to the target.

Saeger, Kevin J [Los Alamos National Laboratory; Cuellar, Leticia [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

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461

Modeling most likely pathways for smuggling radioactive and special nuclear materials on a worldwide multi-modal transportation network  

SciTech Connect (OSTI)

Nuclear weapons proliferation is an existing and growing worldwide problem. To help with devising strategies and supporting decisions to interdict the transport of nuclear material, we developed the Pathway Analysis, Threat Response and Interdiction Options Tool (PATRIOT) that provides an analytical approach for evaluating the probability that an adversary smuggling radioactive or special nuclear material will be detected during transit. We incorporate a global, multi-modal transportation network, explicit representation of designed and serendipitous detection opportunities, and multiple threat devices, material types, and shielding levels. This paper presents the general structure of PATRIOT, all focuses on the theoretical framework used to model the reliabilities of all network components that are used to predict the most likely pathways to the target.

Saeger, Kevin J [Los Alamos National Laboratory; Cuellar, Leticia [Los Alamos National Laboratory

2010-10-28T23:59:59.000Z

462

Sponge-like Si-SiO{sub 2} nanocompositeMorphology studies of spinodally decomposed silicon-rich oxide  

SciTech Connect (OSTI)

Sponge-like Si nanostructures embedded in SiO{sub 2} were fabricated by spinodal decomposition of sputter-deposited silicon-rich oxide with a stoichiometry close to that of silicon monoxide. After thermal treatment a mean feature size of about 3 nm was found in the phase-separated structure. The structure of the Si-SiO{sub 2} nanocomposite was investigated by energy-filtered transmission electron microscopy (EFTEM), EFTEM tomography, and atom probe tomography, which revealed a percolated Si morphology. It was shown that the percolation of the Si network in 3D can also be proven on the basis of 2D EFTEM images by comparison with 3D kinetic Monte Carlo simulations.

Friedrich, D.; Schmidt, B.; Heinig, K. H.; Liedke, B.; Mcklich, A.; Hbner, R. [Helmholtz-Zentrum Dresden Rossendorf, Bautzner Landstr. 400, 01328 Dresden (Germany)] [Helmholtz-Zentrum Dresden Rossendorf, Bautzner Landstr. 400, 01328 Dresden (Germany); Wolf, D. [Triebenberg Laboratory, Institute of Structure Physics, Technische Universitt Dresden, 01062 Dresden (Germany)] [Triebenberg Laboratory, Institute of Structure Physics, Technische Universitt Dresden, 01062 Dresden (Germany); Klling, S. [Fraunhofer Center Nanoelectronic Technologies, Knigsbrcker Str. 180, 01099 Dresden (Germany)] [Fraunhofer Center Nanoelectronic Technologies, Knigsbrcker Str. 180, 01099 Dresden (Germany); Mikolajick, T. [NaMLab GmbH, Nthnitzer Str. 64, 01187 Dresden (Germany) [NaMLab GmbH, Nthnitzer Str. 64, 01187 Dresden (Germany); Technische Universitt Dresden, Nthnitzer Str. 64, 01187 Dresden (Germany)

2013-09-23T23:59:59.000Z

463

System and method for measuring particles in a sample stream of a flow cytometer or the like  

DOE Patents [OSTI]

A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals.

Graves, Steven W. (San Juan Pueblo, NM); Habberset, Robert C. (Santa Fe, NM)

2010-11-16T23:59:59.000Z

464

Tunable exchange bias-like effect in patterned hard-soft two-dimensional lateral composites with perpendicular magnetic anisotropy  

SciTech Connect (OSTI)

Patterned hard-soft 2D magnetic lateral composites have been fabricated by e-beam lithography plus dry etching techniques on sputter-deposited NdCo{sub 5} thin films with perpendicular magnetic anisotropy. Their magnetic behavior is strongly thickness dependent due to the interplay between out-of-plane anisotropy and magnetostatic energy. Thus, the spatial modulation of thicknesses leads to an exchange coupled system with hard/soft magnetic regions in which rotatable anisotropy of the thicker elements provides an extra tool to design the global magnetic behavior of the patterned lateral composite. Kerr microscopy studies (domain imaging and magneto-optical Kerr effect magnetometry) reveal that the resulting hysteresis loops exhibit a tunable exchange bias-like shift that can be switched on/off by the applied magnetic field.

Hierro-Rodriguez, A., E-mail: ahierro@fc.up.pt; Alvarez-Prado, L. M.; Martn, J. I.; Alameda, J. M. [Departamento de Fsica, Universidad de Oviedo, C/Calvo Sotelo S/N, 33007 Oviedo (Spain); Centro de Investigacin en Nanomateriales y NanotecnologaCINN (CSICUniversidad de OviedoPrincipado de Asturias), Parque Tecnolgico de Asturias, 33428 Llanera (Spain); Teixeira, J. M. [IN-IFIMUP, Departamento de Fsica e Astronomia, Faculdade de Cincias, Universidade do Porto, Rua Campo Alegre 687, 4169-007 Porto (Portugal); Vlez, M. [Departamento de Fsica, Universidad de Oviedo, C/Calvo Sotelo S/N, 33007 Oviedo (Spain)

2014-09-08T23:59:59.000Z

465

TEM and x-ray investigation of single crystal-like zirconia films fabricated by dual ion beam deposition  

SciTech Connect (OSTI)

Single crystal-like yttria-stabilized zirconia (YSZ) thin films have been deposited on amorphous quartz, polycrystalline zirconia, single crystal Si, and Hastelloy substrates using dual ion beam deposition (IBAD). These films are highly crystallographically aligned both normal to and within the film plane. The films are deposited at low substrate temperatures (< 200 C), and the film orientation is substrate independent. 0--20 X-ray diffraction, X-ray rocking curves, X-ray pole figures and X-ray phi scans are used to evaluate the film structure. High resolution cross-sectional TEM is used to examine the evolution of crystallographic film alignment on an amorphous quartz substrate. The data suggest that the evolution of biaxial alignment is nucleation controlled under these conditions.

Ressler, K.G.; Sonnenberg, N.; Cima, M.J. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Ceramics Processing Research Lab.

1996-12-31T23:59:59.000Z

466

Molecular-like Ag clusters sensitized near-infrared down-conversion luminescence in oxyfluoride glasses for broadband spectral modification  

SciTech Connect (OSTI)

Molecular-like Ag clusters sized at 14 nm have been stabilized in Pb/Cd-free oxyfluoride glasses, showing broadband excitation/emission characteristics and unique wavelength-dependent luminescent performance with a maximal quantum yield of 26.9%. It was experimentally demonstrated that an energy transfer route of Ag clusters ? Tb{sup 3+} ? Yb{sup 3+} occurs in Ag{sup +}/Tb{sup 3+}/Yb{sup 3+} tri-doped sample, wherein Ag clusters act as sensitizers for near-infrared down-conversion spectral modification. Hopefully, the proposed strategy that noble metal clusters being applied for harvesting solar radiation may potentially solve the sticky problems of the narrow excitation bandwidth and the low excitation efficiency in rare earth ions doped down-conversion materials.

Lin, Hang; Chen, Daqin; Yu, Yunlong; Zhang, Rui; Wang, Yuansheng [State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)] [State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)

2013-08-26T23:59:59.000Z

467

Search for a Heavy Bottom-like Quark in pp Collisions at sqrt(s) = 7 TeV  

SciTech Connect (OSTI)

A search for pair-produced bottom-like quarks in pp collisions at sqrt(s) = 7 TeV is conducted with the CMS experiment at the LHC. The decay b' to tW is considered in this search. The b' b'-bar to tW^- t-bar W^+ process can be identified by the distinctive signature of trileptons and same-sign dileptons. With a data sample corresponding to an integrated luminosity of 34 inverse picobarns, no excess above the standard model background predictions is observed and a b' quark with a mass between 255 and 361 GeV/c^2 is excluded at the 95% confidence level.

Chatrchyan, Serguei; et al.

2011-07-01T23:59:59.000Z

468

Remarkable changes in the near-infrared spectrum of the nova-like variable V4332 Sgr  

E-Print Network [OSTI]

We report on recent near-IR observations of V4332 Sgr - the nova-like variable that erupted in 1994. Its rapid, post-outburst evolution to a cool M type giant/supergiant, soon after its outburst, had showed that it was an unusual object differing from other eruptive variables like classical/symbiotic novae or born-again AGB stars. The present study of V4332 Sgr was motivated by the keen interest in the recent eruption of V838 Mon - which along with V4332 Sgr - is believed to belong to a new class of objects (we propose they may be called "quasi-novae"). Our observations show new developments in the evolution of V4332 Sgr. The most striking feature is the detection of several molecular bands of AlO - a rarely seen molecule in astronomical spectra - in the JHK spectra. Many of these bands are being detected for the first time. The only other detection of some of these AlO bands are in V838 Mon, thereby showing further spectral similarities between the two objects. JHK photometry shows the development of a new dust shell around V4332 Sgr with a temperature of ~ 900K. This dust shell does not appear to be associated with ejecta of the 1994 outburst but is due to a second mass-loss episode which is not expected in a classical nova outburst. The cold molecular environment, suggested by the AlO emission, is also not expected in novae ejecta. We model the AlO bands and also discuss the possible formation mechanism of the AlO.

D. P. K. Banerjee; P. W. Varricatt; N. M. Ashok; O. Launila

2003-10-03T23:59:59.000Z

469

A Shell of Thermal X-ray Emission Associated with the Young Crab-like Remnant 3C58  

E-Print Network [OSTI]

Deep X-ray imaging spectroscopy of the bright pulsar wind nebula 3C58 confirms the existence of an embedded thermal X-ray shell surrounding the pulsar PSR J0205+6449. Radially resolved spectra obtained with the XMM-Newton telescope are well-characterized by a power-law model with the addition of a soft thermal emission component in varying proportions. These fits reproduce the well-studied increase in the spectral index with radius attributed to synchrotron burn-off of high energy electrons. Most interestingly, a radially resolved thermal component is shown to map out a shell-like structure ~6' in diameter. The presence of a strong emission line corresponding to the Ne IX He-like transition requires an overabundance of ~3 x [Ne/Ne(sun)] in the Raymond-Smith plasma model. The best-fit temperature kT ~ 0.23 keV is essentially independent of radius for the derived column density of N_H = (4.2 +/- 0.1)E21 per cm squared. Our result suggests that thermal shells can be obscured in the early evolution of a supernova remnant by non-thermal pulsar wind nebulae emission; the luminosity of the 3C58 shell is more than an order of magnitude below the upper limit on a similar shell in the Crab Nebula. We find the shell centroid to be offset from the pulsar location. If this neutron star has a velocity similar to that of the Crab pulsar, we derive an age of 3700 yr and a velocity vector aligned with the long axis of the PWN. The shell parameters and pulsar offset add to the accumulating evidence that 3C58 is not the remnant of the supernova of CE 1181.

E. V. Gotthelf; D. J. Helfand; L. Newburgh

2006-09-12T23:59:59.000Z

470

Discovery of a peculiar Cepheid-like star towards the northern edge of the Small Magellanic Cloud  

E-Print Network [OSTI]

For seven years, the EROS-2 project obtained a mass of photometric data on variable stars. We present a peculiar Cepheid-like star, in the direction of the Small Magellanic Cloud, which demonstrates unusual photometric behaviour over a short time interval. We report on data of the photometry acquired by the MARLY telescope and spectroscopy from the EFOSC instrument for this star, called EROS2 J005135-714459(sm0060n13842), which resembles the unusual Cepheid HR 7308. The light curve of our target is analysed using the Analysis of Variance method to determine a pulsational period of 5.5675 days. A fit of time-dependent Fourier coefficients is performed and a search for proper motion is conducted. The light curve exhibits a previously unobserved and spectacular change in both mean magnitude and amplitude, which has no clear theoretical explanation. Our analysis of the spectrum implies a radial velocity of 104 km s$^{-1}$ and a metallicity of -0.4$\\pm$0.2 dex. In the direction of right ascension, we measure a proper motion of 17.4$\\pm$6.0 mas yr$^{-1}$ using EROS astrometry, which is compatible with data from the NOMAD catalogue. The nature of EROS2 J005135-714459(sm0060n13842) remains unclear. For this star, we may have detected a non-zero proper motion for this star, which would imply that it is a foreground object. Its radial velocity, pulsational characteristics, and photometric data, however, suggest that it is instead a Cepheid-like object located in the SMC. In such a case, it would present a challenge to conventional Cepheid models.

J. B. Marquette; P. Tisserand; P. Francois; J. P. Beaulieu; V. Doublier; E. Lesquoy; A. Milsztajn; J. Pritchard; A. Schwarzenberg-Czerny; C. Afonso; J. N. Albert; J. Andersen; R. Ansari; E. Aubourg; P. Bareyre; X. Charlot; C. Coutures; R. Ferlet; P. Fouque; J. F. Glicenstein; B. Goldman; A. Gould; D. Graff; M. Gros; J. Haissinski; C. Hamadache; J. de Kat; L. Le Guillou; C. Loup; C. Magneville; E. Maurice; A. Maury; M. Moniez; N. Palanque-Delabrouille; O. Perdereau; Y. R. Rahal; J. Rich; M. Spiro; A. Vidal-Madjar; S. Zylberajch

2008-05-29T23:59:59.000Z

471

STAT3 signaling pathway is necessary for cell survival and tumorsphere forming capacity in ALDH{sup +}/CD133{sup +} stem cell-like human colon cancer cells  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer The phosphorylated or activated form of STAT3 was expressed in colon cancer stem-like cells. Black-Right-Pointing-Pointer STAT3 inhibitor, FLLL32 inhibits P-STAT3 and STAT3 target genes in colon cancer stem-like cells. Black-Right-Pointing-Pointer Inhibition of STAT3 resulted in decreased cell viability and reduced numbers of tumorspheres. Black-Right-Pointing-Pointer STAT3 is required for survival and tumorsphere forming capacity in colon cancer stem-like cells. Black-Right-Pointing-Pointer Targeting STAT3 in cancer stem-like cells may offer a novel treatment approach for colon cancer. -- Abstract: Persistent activation of Signal Transducers and Activators of Transcription 3 (STAT3) is frequently detected in colon cancer. Increasing evidence suggests the existence of a small population of colon cancer stem or cancer-initiating cells may be responsible for tumor initiation, metastasis, and resistance to chemotherapy and radiation. Whether STAT3 plays a role in colon cancer-initiating cells and the effect of STAT3 inhibition is still unknown. Flow cytometry was used to isolate colon cancer stem-like cells from three independent human colon cancer cell lines characterized by both aldehyde dehydrogenase (ALDH)-positive and CD133-positive subpopulation (ALDH{sup +}/CD133{sup +}). The effects of STAT3 inhibition in colon cancer stem-like cells were examined. The phosphorylated or activated form of STAT3 was expressed in colon cancer stem-like cells and was reduced by a STAT3-selective small molecular inhibitor, FLLL32. FLLL32 also inhibited the expression of potential STAT3 downstream target genes in colon cancer stem-like cells including survivin, Bcl-XL, as well as Notch-1, -3, and -4, which may be involved in stem cell function. Furthermore, FLLL32 inhibited cell viability and tumorsphere formation as well as induced cleaved caspase-3 in colon cancer stem-like cells. FLLL32 is more potent than curcumin as evidenced with lower IC50 in colon cancer stem-like cells. In summary, our results indicate that STAT3 is a novel therapeutic target in colon cancer stem-like cells and inhibition of STAT3 in cancer stem-like cells may offer a potential treatment for colorectal cancer.

Lin, Li, E-mail: lin.796@osu.edu [Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43205 (United States) [Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43205 (United States); Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030 (China); Fuchs, James; Li, Chenglong [Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210 (United States)] [Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210 (United States); Olson, Veronica [Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43205 (United States)] [Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43205 (United States); Bekaii-Saab, Tanios [Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210 (United States)] [Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210 (United States); Lin, Jiayuh, E-mail: lin.674@osu.edu [Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43205 (United States)] [Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43205 (United States)

2011-12-16T23:59:59.000Z

472

Current-induced switching of magnetic tunnel junctions: Effects of field-like spin-transfer torque, pinned-layer magnetization orientation, and temperature  

SciTech Connect (OSTI)

We study current-induced switching in magnetic tunnel junctions in the presence of a field-like spin-transfer torque and titled pinned-layer magnetization in the high current limit at finite temperature. We consider both the Slonczewski and field-like torques with coefficients a{sub J} and b{sub J}, respectively. At finite temperatures, ?=b{sub J}/a{sub J}=1 leads to a smaller mean switching time compared that with ?=0. The reduction of switching time in the presence of the field-like term is due to the alignment effect (for ?>0) and the initial torque effect.

Tiwari, R. K.; Jhon, M. H.; Ng, N.; Gan, C. K., E-mail: ganck@ihpc.a-star.edu.sg [Institute of High Performance Computing, Agency for Science, Technology and Research, 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632 (Singapore); Srolovitz, D. J. [Department of Materials Science, Engineering, Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)

2014-01-13T23:59:59.000Z

473

Insulin-like Growth Factor-I and Slow, Bi-directional Perfusion Enhance the Formation of Tissue-Engineered Cardiac Grafts  

E-Print Network [OSTI]

Biochemical and mechanical signals enabling cardiac regeneration can be elucidated using in vitro tissue-engineering models. We hypothesized that insulin-like growth factor-I (IGF) and slow, bi-directional perfusion could ...

Cheng, Mingyu

474

Role of estrogen receptor alpha (ER alpha) insulin-like growth factor (IGF)-I-induced responses in MCF-7 breast cancer cells  

E-Print Network [OSTI]

ROLE OF ESTROGEN RECEPTOR ? (ER?) IN INSULIN-LIKE GROWTH FACTOR (IGF)-I-INDUCED RESPONSES IN MCF-7 BREAST CANCER CELLS A Dissertation by SHU ZHANG Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2007 Major Subject: Toxicology ROLE OF ESTROGEN RECEPTOR ? (ER?) IN INSULIN-LIKE GROWTH FACTOR (IGF)-I-INDUCED RESPONSES IN MCF-7 BREAST CANCER CELLS A Dissertation...

Zhang, Shu

2009-05-15T23:59:59.000Z

475

Relativistic configuration-interaction calculation of energy levels of core-excited states in lithium-like ions: argon through krypton  

E-Print Network [OSTI]

Large-scale relativistic configuration-interaction calculation of energy levels of core-excited states of lithium-like ions is presented. Quantum electrodynamic, nuclear recoil, and frequency-dependent Breit corrections are included in the calculation. The approach is consistently applied for calculating all $n=2$ core-excited states for all lithium-like ions starting from argon ($Z = 18$) and ending with krypton ($Z = 36$). The results obtained are supplemented with systematical estimations of calculation errors and omitted effects.

Yerokhin, V A

2012-01-01T23:59:59.000Z

476

Intercombination and forbidden transition rates in C-and N-like ions ,,O2 measured at a heavy-ion storage ring  

E-Print Network [OSTI]

... measured at a heavy-ion storage ring E. Trabert,1, * A. G. Calamai,2 J. D. Gillaspy,3 G. Gwinner,4 X-dipole forbidden transitions between the levels of the ground complex in C-like ions of O and F and in N-like ions of S have been measured optically at a heavy-ion storage ring. The lifetime results, 1.250 13 ms for the 2s2

Chantler, Christopher T.

477

Insertion-release of guest species and ionic conduction in polyoxometalate solids with a layer-like Anderson structure  

SciTech Connect (OSTI)

The precipitation of Na{sup +} and K{sup +} mixed salts of Anderson type [SbW{sub 6}O{sub 24}]{sup 7-} by addition of excess of NaNO{sub 3} and NaCl yielded polycrystalline powders of Na{sub 2.5}K{sub 5.3}[SbW{sub 6}O{sub 24}](NO{sub 3}){sub 0.8}.12H{sub 2}O (1) and Na{sub 2}K{sub 5.35}[SbW{sub 6}O{sub 24}]Cl{sub 0.35}.12H{sub 2}O (2), respectively. The two compounds are isomorphous and exhibit a layer-like Anderson (LLA) type structure, which consists of [SbW{sub 6}O{sub 24}]{sup 7-}-containing layers and interstitial Na{sup +}, K{sup +}, NO{sub 3}{sup -} or Cl{sup -}, and water O atoms. Recrystallization of 1 and 2 from hot water yielded Na{sub 2}K{sub 5.4}[SbW{sub 6}O{sub 24}](NO{sub 3}){sub 0.4}.12H{sub 2}O (1-recry) and Na{sub 2}K{sub 5.25}[SbW{sub 6}O{sub 24}]Cl{sub 0.25}.12H{sub 2}O (2-recry) as a result of partial release of NO{sub 3}{sup -} and Cl{sup -} (and Na{sup +} and K{sup +} for charge compensation). Dehydration of 1 and 2 at 400 and 500 {sup o}C (1-dehyd400 and 2-dehyd500) caused a shrinkage of lattice, but their the LLA structures retained. Simulation of X-ray diffraction (XRD) patterns for the dehydrated forms allowed to presume that the each [SbW{sub 6}O{sub 24}]{sup 7-} anion had been 30{sup o}-rotated within its molecular plane in order to avoid intermolecular repulsion. A compressed powder of 1-dehyd400 exhibited fast alkaline-ion conduction with a bulk conductivity of 1.2x10{sup -2} {Omega}{sup -1} cm{sup -1} at 400 {sup o}C. The hosting of a sufficient amount of NO{sub 3}{sup -} together with Na{sup +} for charge compensation into the lattice is crucial for high conduction. -- Graphical abstract: Two compounds Na{sub 2.5}K{sub 5.3}[SbW{sub 6}O{sub 24}](NO{sub 3}){sub 0.8}.12H{sub 2}O (1) and Na{sub 2}K{sub 5.35}[SbW{sub 6}O{sub 24}]Cl{sub 0.35}.12H{sub 2}O (2) possessing a layer-like Anderson (LLA) structure exhibited pseudo intercalation-deintercalation behavior. The dehydrated form of 1 is a high alkaline cation conductor with a conductivity of 1.2x10{sup -2} {Omega}{sup -1} cm{sup -1} at 400 {sup o}C. Display Omitted Research highlights: {yields} Layer-like Anderson-type POM solid accommodates and releases NO{sub 3}{sup -} and Cl{sup -}. {yields} The POM exhibits reversible dehydration by heat treatment. {yields} The dehydration involves rotation of POM molecule retaining layer structure. {yields} The dehydrated POM shows good Na{sup +} and K{sup +} conduction.

Naruke, Haruo, E-mail: hnaruke@res.titech.ac.j [Chemical Resources Laboratory, Tokyo Institute of Technology, R1-23, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan); Kajitani, Naoyuki [Chemical Resources Laboratory, Tokyo Institute of Technology, R1-23, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan); Konya, Takayuki [Rigaku Corporation, 3-9-12, Matsubara-cho, Akishima-shi, Tokyo 196-8666 (Japan)

2011-04-15T23:59:59.000Z

478

Functional Toll-like receptor 4 expressed in lactotrophs mediates LPS-induced proliferation in experimental pituitary hyperplasia  

SciTech Connect (OSTI)

Toll like receptor 4 (TLR4) has been characterized for its ability to recognize bacterial endotoxin lipopolysaccharide (LPS). Considering that infections or inflammatory processes might contribute to the progression of pituitary tumors, we analyzed the TLR4 functional role by evaluating the LPS effect on lactotroph proliferation in primary cultures from experimental pituitary tumors, and examined the involvement of PI3K-Akt and NF-?B activation in this effect. In addition, the role of 17?-estradiol as a possible modulator of LPS-induced PRL cell proliferation was further investigated. In estrogen-induced hyperplasic pituitaries, LPS triggered lactotroph cell proliferation. However, endotoxin failed to increase the number of lactotrophs taking up BrdU in normal pituitaries. Moreover, incubation with anti-TLR4 antibody significantly reduced LPS-induced lactotroph proliferation, suggesting a functional role of this receptor. As a sign of TLR4 activation, an LPS challenge increased IL-6 release in normal and tumoral cells. By flow cytometry, TLR4 baseline expression was revealed at the plasma membrane of tumoral lactotrophs, without changes noted in the percentage of double PRL/TLR4 positive cells after LPS stimulus. Increases in TLR4 intracellular expression were detected as well as rises in CD14, p-Akt and NF-?B after an LPS challenge, as assessed by western blotting. The TLR4/PRL and PRL/NF-?B co-localization was also corroborated by immunofluorescence and the involvement of PI3K/Akt signaling in lactotroph proliferation and IL-6 release was revealed through the PI3K inhibitor Ly-294002. In addition, 17?-estradiol attenuated the LPS-evoked increase in tumoral lactotroph proliferation and IL-6 release. Collectively these results demonstrate the presence of functional TLR4 in lactotrophs from estrogen-induced hyperplasic pituitaries, which responded to the proliferative stimulation and IL-6 release induced by LPS through TLR4/CD14, with a contribution of the PI3K-Akt and NF-?B signaling pathways. - Highlights: In hyperplastic pituitaries, LPS triggered the lactotroph cell proliferation and IL-6 release. Functional Toll-like receptor 4 (TLR4) is expressed at the plasma membrane of tumoral lactotrophs. Increases in TLR4 and CD14 intracellular expression levels were detected after an LPS challenge. The proliferative stimulation and IL-6 release involved the PI3K-Akt pathway and NF-?B activation. 17?-estradiol attenuated the LPS-evoked tumoral lactotroph proliferation and IL-6 secretion.

Sabatino, Mara Eugenia; Sosa, Liliana del Valle; Petiti, Juan Pablo; Mukdsi, Jorge Humberto [Centro de Microscopa Electrnica, Instituto de Investigaciones en Ciencias de la Salud (INICSA-CONICET), Facultad de Ciencias Mdicas, Universidad Nacional de Crdoba, Av. Enrique Barros y Enfermera Gordillo, Ciudad Universitaria, CP 5000, Crdoba (Argentina); Mascanfroni, Ivn Daro; Pellizas, Claudia Gabriela [Centro de Investigaciones en Bioqumica Clnica e Inmunologa (CIBICI-CONICET), Facultad de Ciencias Qumicas, Universidad Nacional de Crdoba, Av. Haya de la Torre y Medina Allende, Ciudad Universitaria, CP 5000, Crdoba (Argentina); Gutirrez, Silvina; Torres, Alicia Ins [Centro de Microscopa Electrnica, Instituto de Investigaciones en Ciencias de la Salud (INICSA-CONICET), Facultad de Ciencias Mdicas, Universidad Nacional de Crdoba, Av. Enrique Barros y Enfermera Gordillo, Ciudad Universitaria, CP 5000, Crdoba (Argentina); De Paul, Ana Luca, E-mail: adepaul@cmefcm.uncor.edu [Centro de Microscopa Electrnica, Instituto de Investigaciones en Ciencias de la Salud (INICSA-CONICET), Facultad de Ciencias Mdicas, Universidad Nacional de Crdoba, Av. Enrique Barros y Enfermera Gordillo, Ciudad Universitaria, CP 5000, Crdoba (Argentina)

2013-11-15T23:59:59.000Z

479

On detecting oscillations of gamma rays into axion-like particles in turbulent and coherent magnetic fields  

E-Print Network [OSTI]

Background radiation fields pervade the Universe, and above a certain energy any $\\gamma$-ray flux emitted by an extragalactic source should be attenuated due to $e^+e^-$ pair production. The opacity could be alleviated if photons oscillated into hypothetical axion-like particles (ALPs) in ambient magnetic fields, leading to a $\\gamma$-ray excess especially at high optical depths that could be detected with imaging air Cherenkov telescopes (IACTs). Here, we introduce a method to search for such a signal in $\\gamma$-ray data and to estimate sensitivities for future observations. Different magnetic fields close to the $\\gamma$-ray source are taken into account in which photons can convert into ALPs that then propagate unimpeded over cosmological distances until they re-convert in the magnetic field of the Milky Way. Specifically, we consider the coherent field at parsec scales in a blazar jet as well as the turbulent field inside a galaxy cluster. For the latter, we explicitly derive the transversal components of a magnetic field with gaussian turbulence which are responsible for the photon-ALP mixing. To illustrate the method, we apply it to a mock IACT array with characteristics similar to the Cherenkov Telescope Array and investigate the dependence of the sensitivity to detect a $\\gamma$-ray excess on the magnetic-field parameters.

Manuel Meyer; Daniele Montanino; Jan Conrad

2014-09-04T23:59:59.000Z

480

Switch-like reprogramming of gene expression after fusion of multinucleate plasmodial cells of two Physarum polycephalum sporulation mutants  

SciTech Connect (OSTI)

Highlights: We investigate reprogramming of gene expression in multinucleate single cells. Cells of two differentiation control mutants are fused. Fused cells proceed to alternative gene expression patterns. The population of nuclei damps stochastic fluctuations in gene expression. Dynamic processes of cellular reprogramming can be observed by repeated sampling of a cell. -- Abstract: Nonlinear dynamic processes involving the differential regulation of transcription factors are considered to impact the reprogramming of stem cells, germ cells, and somatic cells. Here, we fused two multinucleate plasmodial cells of Physarum polycephalum mutants defective in different sporulation control genes while being in different physiological states. The resulting heterokaryons established one of two significantly different expression patterns of marker genes while the plasmodial halves that were fused to each other synchronized spontaneously. Spontaneous synchronization suggests that switch-like control mechanisms spread over and finally control the entire plasmodium as a result of cytoplasmic mixing. Regulatory molecules due to the large volume of the vigorously streaming cytoplasm will define concentrations in acting on the population of nuclei and in the global setting of switches. Mixing of a large cytoplasmic volume is expected to damp stochasticity when individual nuclei deliver certain RNAs at low copy number into the cytoplasm. We conclude that spontaneous synchronization, the damping of molecular noise in gene expression by the large cytoplasmic volume, and the option to take multiple macroscopic samples from the same plasmodium provide unique options for studying the dynamics of cellular reprogramming at the single cell level.

Walter, Pauline; Hoffmann, Xenia-Katharina; Ebeling, Britta; Haas, Markus; Marwan, Wolfgang, E-mail: wolfgang.marwan@ovgu.de

2013-05-24T23:59:59.000Z

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481

Study the cytotoxicity of different kinds of water-soluble nanoparticles in human osteoblast-like MG-63 cells  

SciTech Connect (OSTI)

Highlights: ? Preparation of three kinds of water-soluble QDs: CdTe, CdTe@SiO{sub 2}, Mn:ZnSe. ? Evaluated the cytotoxicity qualitatively and quantitatively. ? Fluorescent staining. ? Detected the total intracellular cadmium in cells. -- Abstract: Quantum nanoparticles have been applied extensively in biological and medical fields, the cytotoxicity of nanoparticles becomes the key point we should concern. In this paper, the cytotoxicity of three kinds of water-soluble nanoparticles: CdTe, CdTe@SiO{sub 2} and Mn:ZnSe was studied. We evaluated the nanoparticles toxicity qualitatively by observing the morphological changes of human osteoblast-like MG-63 cells at different incubation times and colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assays were carried out to detect the cell viability quantitatively. The results showed that CdTe nanoparticles with high concentrations caused cells to die largely while CdTe@SiO{sub 2} and Mn:ZnSe nanoparticles had no obvious effect. For further study, we studied the relation between the cell viability and the total cadmium concentration in cells and found that the viability of cells treated with CdTe@SiO{sub 2} nanoparticles was higher than that treated with CdTe nanoparticles. We also discovered that the death rate of cells co-incubated with CdTe nanoparticles was proportional to the total intracellular cadmium concentrations.

Niu, Lu [Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)] [Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China); Li, Yang; Li, Xiaojie [Department of Pathophysiology, Prostate Diseases Prevention and Treatment Research Centre, Norman Bethune Medical School, Jilin University, Changchun 130012 (China)] [Department of Pathophysiology, Prostate Diseases Prevention and Treatment Research Centre, Norman Bethune Medical School, Jilin University, Changchun 130012 (China); Gao, Xue [Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)] [Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China); Su, Xingguang, E-mail: suxg@jlu.edu.cn [Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)] [Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)

2012-11-15T23:59:59.000Z

482

Quantum like modelling of the non-separability of voters' preferences in the U.S. political system  

E-Print Network [OSTI]

Divided Government is nowadays a common feature of the U.S. political system. The voters can cast partisan ballots for two political powers the executive (Presidential elections) and the legislative (the Congress election). Some recent studies have shown that many voters tend to shape their preferences for the political parties by choosing different parties in these two election contests. This type of behavior referred to by Smith et al. (1999) as "ticket splitting" shows irrationality of behavior (such as preference reversal) from the perspective of traditional decision making theories (Von Neumann and Morgenstern (1953), Savage, (1954)). It has been shown by i.e. Zorn and Smith (2011) and also Khrennikova et al. (2014) that these types of "non-separable" preferences are context dependent and can be well accommodated in a quantum like framework. In this paper we use data from Smith et al. (1999) to show first of all probabilistic violation of classical (Kolmogorovian) framework. We proceed with the depiction of our observables (the Congress and the Presidential contexts) with the aid of the quantum probability formula that incorporates the "contextuality" of the decision making process through the interference term. Statistical data induces an interference term of large magnitude a so called hyperbolic interference. We perform with help of our transition probabilities a state reconstruction of the voters state vectors to test for the applicability of the generalized Born rule. This state can be mathematically represented in the generalized Hilbert space based on hyper-complex numbers.

Polina Khrennikova

2014-05-07T23:59:59.000Z

483

X-Ray Flares of Sun-Like Young Stellar Objects and Their Effects on Protoplanetary Disks  

E-Print Network [OSTI]

Astronomical observations of flares from analogs of the early Sun have the potential to give critical insights into the high energy irradiation environment of protoplanetary disks. Solar-mass young stellar objects are significantly more X-ray luminous than the typical low-mass T Tauri star. They undergo frequent strong flaring on a several day time scale. Very powerful flares also occur, but on a longer time frame. The hard X-ray spectrum of these stars become even harder during flaring. The X-rays from these sun-like young stellar objects have the potential to ionize circumstellar material out to large distances. Three specific illustrations are given of the effects of the X-rays: The physics and chemistry of the atmospheres of the inner accretion disks; the ionization level at the disk midplane, important for the viability of the magnetorotational instability; and the nuclear fluence in the irradiation zone just interior to the inner edge of the disk, important in local irradiation scenarios for producing the short-lived radionuclides found in meteorites.

A. E. Glassgold; E. D. Feigelson; T. Momtmerle; S. Wolk

2005-06-13T23:59:59.000Z

484

Atmospheric-pressure plasma jets: Effect of gas flow, active species, and snake-like bullet propagation  

SciTech Connect (OSTI)

Cold atmospheric-pressure plasma jets have recently attracted enormous interest owing to numerous applications in plasma biology, health care, medicine, and nanotechnology. A dedicated study of the interaction between the upstream and downstream plasma plumes revealed that the active species (electrons, ions, excited OH, metastable Ar, and nitrogen-related species) generated by the upstream plasma plume enhance the propagation of the downstream plasma plume. At gas flows exceeding 2 l/min, the downstream plasma plume is longer than the upstream plasma plume. Detailed plasma diagnostics and discharge species analysis suggest that this effect is due to the electrons and ions that are generated by the upstream plasma and flow into the downstream plume. This in turn leads to the relatively higher electron density in the downstream plasma. Moreover, high-speed photography reveals a highly unusual behavior of the plasma bullets, which propagate in snake-like motions, very differently from the previous reports. This behavior is related to the hydrodynamic instability of the gas flow, which results in non-uniform distributions of long-lifetime active species in the discharge tube and of surface charges on the inner surface of the tube.

Wu, S.; Wang, Z.; Huang, Q.; Tan, X.; Lu, X. [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China); Ostrikov, K. [CSIRO Materials Science and Engineering, PO Box 218, Lindfield NSW 2070 (Australia); School of Physics, University of Sydney, Sydney NSW 2006 (Australia); State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)

2013-02-15T23:59:59.000Z

485

Habitability of Earth-like planets with high obliquity and eccentric orbits: results from a general circulation model  

E-Print Network [OSTI]

We explore the implications of seasonal variability for the habitability of Earth-like planets as determined by the two parameters polar obliquity and orbital eccentricity. Commonly, the outer boundary of the habitable zone (HZ) is set by a completely frozen planet, or snowball state. Using a general circulation model coupled to a thermodynamic sea-ice model, our results show that seasonal variability can extend this outer limit of the HZ from 1.03 AU (no seasonal variability) to a maximum of 1.69 AU. Also the multistability property of planets close to the outer edge of the HZ is influenced by seasonal variability. Cold states extend far into the HZ for non-oblique planets. On highly oblique planets, cold states can also allow for habitable regions, which highlights the sufficient but not necessary condition of a warm climate state for habitability. While the effect of obliquity on the extent of the HZ is comparatively small on circular orbits, it becomes highly relevant on eccentric orbits. Our experiments ...

Linsenmeier, Manuel; Lucarini, Valerio

2014-01-01T23:59:59.000Z

486

Discovery of a peculiar Cepheid-like star towards the northern edge of the Small Magellanic Cloud  

E-Print Network [OSTI]

For seven years, the EROS-2 project obtained a mass of photometric data on variable stars. We present a peculiar Cepheid-like star, in the direction of the Small Magellanic Cloud, which demonstrates unusual photometric behaviour over a short time interval. We to report on data of the photometriy acquired by the MARLY telescope and spectroscopy from the EFOSC instrument for this star, called EROS2 J005135-714459(sm0060n13842), which resembles the unusual Cepheid HR 7308. The light curve of our target is analysed using the Analysis of Variance method to determine a pulsational period of 5.5675 days. A fit of time-dependent Fourier coefficients is performed and a search for proper motion is conducted. The light curve exhibits a previously unobserved and spectacular change in both mean magnitude and amplitude, which has no clear theoretical explanation. Our analysis of the spectrum implies a radial velocity of 104 km s$^{-1}$ and a metallicity of -0.4$\\pm$0.2 dex. In the direction of right ascension, we measure a...

Marquette, J B; Franois, P; Beaulieu, J P; Doublier, V; Lesquoy, E; Milsztajn, A; Pritchard, J; Schwarzenberg-Czerny, A; Afonso, C; Albert, J N; Andersen, J; Ansari, R; Aubourg, E; Bareyre, P; Charlot, X; Coutures, C; Ferlet, R; Fouqu, P; Glicenstein, J F; Goldman, B; Gould, A; Graff, D; Gros, M; Hassinski, J; Hamadache, C; De Kat, J; Guillou, L Le; Loup, C; Magneville, C; Maurice, E; Maury, A; Moniez, M; Palanque-Delabrouille, Nathalie; Perdereau, O; Rahal, Y R; Rich, J; Spiro, M; Vidal-Madjar, A; Zylberajch, S

2008-01-01T23:59:59.000Z

487

Ankle-like Feature in the Energy Spectrum of Light Elements of Cosmic Rays Observed with KASCADE-Grande  

E-Print Network [OSTI]

Recent results of the KASCADE-Grande experiment provided evidence for a mild knee-like structure in the all-particle spectrum of cosmic rays at $E = 10^{16.92 \\pm 0.10} \\, \\mathrm{eV}$, which was found to be due to a steepening in the flux of heavy primary particles. The spectrum of the combined components of light and intermediate masses was found to be compatible with a single power law in the energy range from $10^{16.3} \\, \\mathrm{eV}$ to $10^{18} \\, \\mathrm{eV}$. In this paper, we present an update of this analysis by using data with increased statistics, originating both from a larger data set including more recent measurements and by using a larger fiducial area. In addition, optimized selection criteria for enhancing light primaries are applied. We find a spectral feature for light elements, namely a hardening at $E = 10^{17.08 \\pm 0.08} \\, \\mathrm{eV}$ with a change of the power law index from $-3.25 \\pm 0.05$ to $-2.79 \\pm 0.08$.

Apel, W D; Bekk, K; Bertaina, M; Blmer, J; Bozdog, H; Brancus, I M; Cantoni, E; Chiavassa, A; Cossavella, F; Daumiller, K; de Souza, V; Di Pierro, F; Doll, P; Engel, R; Engler, J; Finger, M; Fuchs, B; Fuhrmann, D; Gils, H J; Glasstetter, R; Grupen, C; Haungs, A; Heck, D; Hrandel, J R; Huber, D; Huege, T; Kampert, K -H; Kang, D; Klages, H O; Link, K; ?uczak, P; Ludwig, M; Mathes, H J; Mayer, H J; Melissas, M; Milke, J; Mitrica, B; Morello, C; Oehlschlger, J; Ostapchenko, S; Palmieri, N; Petcu, M; Pierog, T; Rebel, H; Roth, M; Schieler, H; Schoo, S; Schrder, F G; Sima, O; Toma, G; Trinchero, G C; Ulrich, H; Weindl, A; Wochele, J; Wommer, M; Zabierowski, J; 10.1103/PhysRevD.87.081101

2013-01-01T23:59:59.000Z

488

Effect of the minority concentration on ion cyclotron resonance heating in presence of the ITER-like wall in JET  

SciTech Connect (OSTI)

The most recent JET campaign has focused on characterizing operation with the 'ITER-like' wall. One of the questions that needed to be answered is whether the auxiliary heating methods do not lead to unacceptably high levels of impurity influx, preventing fusion-relevant operation. In view of its high single pass absorption, hydrogen minority fundamental cyclotron heating in a deuterium plasma was chosen as the reference wave heating scheme in the ion cyclotron domain of frequencies. The present paper discusses the plasma behavior as a function of the minority concentration X[H] in L-mode with up to 4MW of RF power. It was found that the tungsten concentration decreases by a factor of 4 when the minority concentration is increased from X[H] ? 5% to X[H] % 20% and that it remains at a similar level when X[H] is further increased to 30%; a monotonic decrease in Beryllium emission is simultaneously observed. The radiated power drops by a factor of 2 and reaches a minimum at X[H] ? 20%. It is discussed that poor single pass absorption at too high minority concentrations ultimately tailors the avoidance of the RF induced impurity influx. The edge density being different for different minority concentrations, it is argued that the impact ICRH has on the fate of heavy ions is not only a result of core (wave and transport) physics but also of edge dynamics and fueling.

Van Eester, D.; Lerche, E.; Cromb, K.; Jachmich, S. [LPP-ERM/KMS, Association Euratom-Belgian State, TEC Partner, Brussels (Belgium); Jacquet, P.; Graham, M.; Kiptily, V.; Matthews, G.; Mayoral, M.-L.; Mc Cormick, K.; Monakhov, I.; Noble, C.; Rimini, F.; Solano, E. R. [Euratom-CCFE Fusion Association, Culham Science Centre (United Kingdom); Bobkov, V.; Maggi, C.; Neu, R.; Ptterich, T. [MPI fr Plasmaphysik Euratom Assoziation, Garching (Germany); Czarnecka, A. [Institute of Plasma Physics and Laser Microfusion, Warsaw (Poland); Coenen, J. W. [IEK-4, EURATOM-FZJ, TEC Partner, Jlich (Germany); and others

2014-02-12T23:59:59.000Z

489

Neuropeptide Y-like immunoreactivity in rat cranial parasympathetic neurons: coexistence with vasoactive intestinal peptide and choline acetyltransferase  

SciTech Connect (OSTI)

Neuropeptide Y (NPY) is widely distributed in the sympathetic nervous system, where it is colocalized with norepinephrine. The authors report here that NPY-immunoreactive neurons are also abundant in three cranial parasympathetic ganglia, the otic, sphenopalatine, and ciliary, in the rat measured by radioimmunoassay. High-performance liquid chromatographic analysis of the immunoreactive material present in the otic ganglion indicates that this material is very similar to porcine NPY and indistinguishable from the NPY-like immunoreactivity present in rat sympathetic neurons. These findings raise the possibility that NPY acts as a neuromodulator in the parasympathetic as well as the sympathetic nervous system. In contrast to what had been observed for sympathetic neurons, NPY-immunoreactive neurons in cranial parasympathetic ganglia do not contain detectable catecholamines or tyrosine hydroxylase immunoreactivity, and many do contain immunoreactivity for vasoactive intestinal peptide and/or choline acetyltransferase. These findings suggest that there is no simple rule governing coexpression of NPY with norepinephrine, acetylcholine, or vasoactive intestinal peptide in autonomic neuron