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1

Quantitative, non-invasive imaging of radiation-induced DNA double strand breaks in vivo  

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

Quantitative, non-invasive imaging of radiation-induced DNA double strand breaks in vivo Quantitative, non-invasive imaging of radiation-induced DNA double strand breaks in vivo Wenrong Li 1, , Fang Li 1 , Qian Huang 1 , Jingping Shen 1 , Frank Wolf 1 , Yujun He 1 , Xinjian Liu 1 , Y. Angela Hu 1 , Joel. S. Bedford 5 , and Chuan-Yuan Li 1,2,* Departments of 1 Radiation Oncology, 2 Pharmacology, University of Colorado School of Medicine, Aurora, Colorado, USA; 3 Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA DNA double strand breaks are a major form of DNA damage and a key mechanism through which radiotherapy and some chemotherapeutic agents kill cancer cells. Despite its importance, measuring DNA double strand breaks is still a tedious task that is normally carried out by gel electrophoresis or immunofluorescence staining. Here we report a novel approach to image and

2

ASSESSMENT OF INDIVIDUAL VARIATION IN DNA DOUBLE-STRAND BREAK REPAIR CAPACITY IN HUMAN DIPLOID FIBROBLASTS  

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

ASSESSMENT OF INDIVIDUAL VARIATION IN DNA DOUBLE-STRAND ASSESSMENT OF INDIVIDUAL VARIATION IN DNA DOUBLE-STRAND BREAK REPAIR CAPACITY IN HUMAN DIPLOID FIBROBLASTS Paul F. Wilson, John M. Hinz, Peter B. Nham, Salustra S. Urbin, Cynthia B. Thomas, Irene M. Jones, and Larry H. Thompson Biosciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA The induction of bi-stranded clustered DNA damage (BCD), which includes direct DNA double-strand breaks (DSBs), is a hallmark of ionizing radiation (IR) exposure. Incorrectly repaired DSBs can cause chromosomal rearrangements and an increased risk of genomic instability and cancer. Because there is polymorphic variation in DNA repair genes and much of this variation is predicted to have a functional impact, healthy people likely vary in their capacity to repair DSBs and other BCD. This project

3

Genetics of x-ray induced double strand break repair in saccharomyces cerevisiae  

SciTech Connect (OSTI)

The possible fates of x-ray-induced double-strand breaks in Saccharomyces cerevisiae were examined. One possible pathway which breaks can follow, the repair pathway, was studied by assaying strains with mutations in the RAD51, RAD54, and RAD57 loci for double-strand break repair. In order of increasing radiation sensitivity one finds: rad57-1(23/sup 0/)> rad51-1(30/sup 0/)> rad54-3(36/sup 0/). At 36/sup 0/, rad54-3 cells cannot repair double-strand breaks, while 23/sup 0/, they can. Strains with the rad57-1 mutation can rejoin broken chromosomes at both temperatures. However, the low survival at 36/sup 0/ shows that the assay is not distinguishing large DNA fragments which allow cell survival from those which cause cell death. A rad51-1 strain could also rejoin broken chromosomes, and was thus capable of incomplete repair. The data can be explained with the hypothesis that rad54-3 cells are blocked in an early step of repair, while rad51-1 and rad57-1 strains are blocked in a later step of repair. The fate of double-strand breaks when they are left unrepaired was investigated with the rad54-3 mutation. If breaks are prevented from entering the RAD54 repair pathway they become uncommitted lesions. These lesions are repaired slower than the original breaks. One possible fate for an uncommitted lesion is conversion into a fixed lesion, which is likely to be an unrepairable or misrepaired double-strand break. The presence of protein synthesis after irradiation increases the probability that a break will enter the repair pathway. Evidence shows that increased probability of repair results from enhanced synthesis of repair proteins shortly after radiation. (ERB)

Budd, M.E.

1982-07-01T23:59:59.000Z

4

The Role of DNA double-strand break repair in cellular response to low  

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

DNA double-strand break repair in cellular response to low DNA double-strand break repair in cellular response to low dose radiation exposure. David J. Chen Division of Molecular Radiation Biology, Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas TX 75390 It has been assumed that molecular pathways that involved in the biological response for low dose of radiation should be similar to those for high dose radiation in general. The low dose-rate effect and DNA double-strand break repair are inextricably linked in mammalian cells. It has been reported that mammalian mutant cells deficient in nonhomologous end join (NHEJ) pathway have little or no cellular recovery when expose to low-dose-rate radiation. Recently, it has also been reported that cells deficient in

5

A Key Step in Repairing DNA Double-Strand Breaks | Advanced Photon Source  

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

X-ray Rainbow X-ray Rainbow An Insulating Breakthrough Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed A Key Step in Repairing DNA Double-Strand Breaks JANUARY 10, 2007 Bookmark and Share The atomic structure of the protein 53BP1 identified by Mayo researchers. (Courtesy: Mayo Clinic) A team of Mayo Clinic researchers has uncovered a key step in the molecular pathway of repairing DNA double-strand breaks. The studies were carried out using the 19-ID beamline (SBC-CAT) at the Advanced Photon Source (APS, Argonne) and the X12-C beamline at the National Synchrotron Light Source (NSLS, Brookhaven National Laboratory). Both the APS and the NSLS are funded by the U.S. Department of Energy's Office of Basic Energy

6

Telomeres and DNA double-strand breaks: ever the twain shall S. M. Baileya,* and M. N. Cornforthb  

E-Print Network [OSTI]

between the naturally occurring DNA double-strand breaks (DSBs) found at chromosome ends (i.e., telomeres Collins, CO 80523-1618 (USA), Fax: +19704917742, e-mail: sbailey@colostate.edu b Department of Radiation on their inability to rejoin with broken chromosome ends produced by radiation. Today, we recognize two essential

7

Repair of Site-Specific DNA Double-Strand Breaks in Barley Occurs via Diverse Pathways Primarily Involving the Sister Chromatid  

Science Journals Connector (OSTI)

...research-article RESEARCH ARTICLES Repair of Site-Specific DNA Double-Strand...various double-strand break repair pathways in the monocot plant...0.307_win32 with UPARSE pipeline (Edgar, 2013). The three...polymorphisms indicative of distinct repair mechanisms. SCE and Mitotic...

Giang T.H. Vu; Hieu X. Cao; Koichi Watanabe; Goetz Hensel; Frank R. Blattner; Jochen Kumlehn; Ingo Schubert

2014-05-29T23:59:59.000Z

8

Epigenetic Modifications in Double-Strand Break DNA Damage Signaling and Repair  

Science Journals Connector (OSTI)

...Focus 10 14 31 DNA Damage and Repair in Translational Oncology...investigators, DNA damage and repair has been a major focus of anticancer...Plummer R . Perspective on the pipeline of drugs being developed with...break DNA damage signaling and repair. Clin Cancer Res 2010;16...

Dorine Rossetto; Andrew W. Truman; Stephen J. Kron; and Jacques Côté

2010-09-15T23:59:59.000Z

9

Human Polynucleotide Kinase Participates in Repair of DNA Double-Strand Breaks by Nonhomologous End Joining but not Homologous Recombination  

Science Journals Connector (OSTI)

...for the repair of topoisomerase I-mediated DNA lesions. DNA Repair (Amst) 2003;2:1087-100. 42 El-Khamisy SF, Saifi GM, Weinfeld M, et al. Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1...

Feridoun Karimi-Busheri; Aghdass Rasouli-Nia; Joan Allalunis-Turner; Michael Weinfeld

2007-07-15T23:59:59.000Z

10

Probability of double-strand breaks in genome-sized DNA by {gamma}-ray decreases markedly as the DNA concentration increases  

SciTech Connect (OSTI)

By use of the single-molecule observation, we count the number of DNA double-strand breaks caused by {gamma}-ray irradiation with genome-sized DNA molecules (166 kbp). We find that P{sub 1}, the number of double-strand breaks (DSBs) per base pair per unit Gy, is nearly inversely proportional to the DNA concentration above a certain threshold DNA concentration. The inverse relationship implies that the total number of DSBs remains essentially constant. We give a theoretical interpretation of our experimental results in terms of attack of reactive species upon DNA molecules, indicating the significance of the characteristics of genome-sized giant DNA as semiflexible polymers for the efficiency of DSBs.

Shimobayashi, Shunsuke F. [Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan); Iwaki, Takafumi [Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103 (Japan); Mori, Toshiaki [Radiation Research Center, Osaka Prefecture University, Sakai 599-8570 (Japan); Yoshikawa, Kenichi [Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan); Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394 (Japan)

2013-05-07T23:59:59.000Z

11

Creating Directed Double-strand Breaks with the Ref Protein: A Novel Rec A-Dependent Nuclease from Bacteriophage P1  

SciTech Connect (OSTI)

The bacteriophage P1-encoded Ref protein enhances RecA-dependent recombination in vivo by an unknown mechanism. We demonstrate that Ref is a new type of enzyme; that is, a RecA-dependent nuclease. Ref binds to ss- and dsDNA but does not cleave any DNA substrate until RecA protein and ATP are added to form RecA nucleoprotein filaments. Ref cleaves only where RecA protein is bound. RecA functions as a co-nuclease in the Ref/RecA system. Ref nuclease activity can be limited to the targeted strands of short RecA-containing D-loops. The result is a uniquely programmable endonuclease activity, producing targeted double-strand breaks at any chosen DNA sequence in an oligonucleotide-directed fashion. We present evidence indicating that cleavage occurs in the RecA filament groove. The structure of the Ref protein has been determined to 1.4 {angstrom} resolution. The core structure, consisting of residues 77-186, consists of a central 2-stranded {beta}-hairpin that is sandwiched between several {alpha}-helical and extended loop elements. The N-terminal 76 amino acid residues are disordered; this flexible region is required for optimal activity. The overall structure of Ref, including several putative active site histidine residues, defines a new subclass of HNH-family nucleases. We propose that enhancement of recombination by Ref reflects the introduction of directed, recombinogenic double-strand breaks.

Gruenig, Marielle C.; Lu, Duo; Won, Sang Joon; Dulberger, Charles L.; Manlick, Angela J.; Keck, James L.; Cox, Michael M. (UW)

2012-03-16T23:59:59.000Z

12

Induction of DNA Double-Strand Breaks and Cellular Migration Through Bystander Effects in Cells Irradiated With the Slit-Type Microplanar Beam of the Spring-8 Synchrotron  

SciTech Connect (OSTI)

Purpose: To determine whether glioma cells irradiated with a microplanar X-ray beam exert bystander effects. Methods and Materials: Microplanar beam irradiation of glioma cells in vitro was done using the SPring-8 synchrotron radiation facility. The amount of DNA double-strand breaks (dsbs) was measured by the fluorescence intensity of phosphorylated H2AX or the number of 53BP1 foci. The dose distribution in a cell population exposed to a single microplanar beam was determined by the amount of phosphorylated H2AX-positive cells. Bystander effects were determined by counting the number of 53BP1 foci in nonirradiated cells treated with conditioned medium from cultures of irradiated cells. Results: More DNA dsbs were detected in cells adjacent to an area irradiated by the single beam than in cells in distant, nonirradiated areas as a result of bystander effects caused by scattered X-rays and DNA dsbs. In support of this, more 53BP1 foci were observed in nonirradiated, conditioned medium-treated cells than in control cells (i.e., cells not treated with irradiation or conditioned medium). These results suggest that DNA dsbs were induced in nonirradiated cells by soluble factors in the culture medium. In addition, we observed cellular migration into areas irradiated with peak doses, suggesting that irradiated cells send signals that cause nonirradiated cells to migrate toward damaged cells. Conclusions: Bystander effects are produced by factors secreted as a result of slit-type microplanar X-ray beam irradiation.

Kashino, Genro [Research Reactor Institute, Kyoto University, Osaka (Japan)], E-mail: kashino@rri.kyoto-u.ac.jp; Kondoh, Takeshi [Department of Neurosurgery, Graduate School of Medicine, Kobe University, Kobe (Japan); Nariyama, Nobuteru; Umetani, Keiji; Ohigashi, Takuji [Japan Synchrotron Radiation Research Institute, Hyogo (Japan); Shinohara, Kunio [Japan Synchrotron Radiation Research Institute, Hyogo (Japan); Advanced Research Institute for Science and Engineering, Waseda University, Tokyo (Japan); Kurihara, Ai; Fukumoto, Manabu [Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, Sendai (Japan); Tanaka, Hiroki; Maruhashi, Akira; Suzuki, Minoru; Kinashi, Yuko; Liu Yong; Masunaga, Shin-ichiro; Watanabe, Masami; Ono, Koji [Research Reactor Institute, Kyoto University, Osaka (Japan)

2009-05-01T23:59:59.000Z

13

Induction and Rejoining of DNA Double Strand Breaks Assessed by H2AX Phosphorylation in Melanoma Cells Irradiated with Proton and Lithium Beams  

SciTech Connect (OSTI)

Purpose: The aim of this study was to evaluate the induction and rejoining of DNA double strand breaks (DSBs) in melanoma cells exposed to low and high linear energy transfer (LET) radiation. Methods and Materials: DSBs and survival were determined as a function of dose in melanoma cells (B16-F0) irradiated with monoenergetic proton and lithium beams and with a gamma source. Survival curves were obtained by clonogenic assay and fitted to the linear-quadratic model. DSBs were evaluated by the detection of phosphorylated histone H2AX ({gamma}H2AX) foci at 30 min and 6 h post-irradiation. Results: Survival curves showed the increasing effectiveness of radiation as a function of LET. {gamma}H2AX labeling showed an increase in the number of foci vs. dose for all the radiations evaluated. A decrease in the number of foci was found at 6 h post-irradiation for low LET radiation, revealing the repair capacity of DSBs. An increase in the size of {gamma}H2AX foci in cells irradiated with lithium beams was found, as compared with gamma and proton irradiations, which could be attributed to the clusters of DSBs induced by high LET radiation. Foci size increased at 6 h post-irradiation for lithium and proton irradiations in relation with persistent DSBs, showing a correlation with surviving fraction. Conclusions: Our results showed the response of B16-F0 cells to charged particle beams evaluated by the detection of {gamma}H2AX foci. We conclude that {gamma}H2AX foci size is an accurate parameter to correlate the rejoining of DSBs induced by different LET radiations and radiosensitivity.

Ibanez, Irene L. [Comision Nacional de Energia Atomica, San Martin (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina); Bracalente, Candelaria [Comision Nacional de Energia Atomica, San Martin (Argentina); Molinari, Beatriz L. [Comision Nacional de Energia Atomica, San Martin (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina); Palmieri, Monica A. [Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (Argentina); Policastro, Lucia [Comision Nacional de Energia Atomica, San Martin (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina); Kreiner, Andres J. [Comision Nacional de Energia Atomica, San Martin (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina); Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin (Argentina); Burlon, Alejandro A. [Comision Nacional de Energia Atomica, San Martin (Argentina); Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin (Argentina); Valda, Alejandro [Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin (Argentina); Navalesi, Daniela [Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (Argentina); Davidson, Jorge; Davidson, Miguel [Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina); Vazquez, Monica; Ozafran, Mabel [Comision Nacional de Energia Atomica, San Martin (Argentina); Duran, Hebe [Comision Nacional de Energia Atomica, San Martin (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina); Escuela de Ciencia y Tecnologia, Universidad Nacional de San Martin (Argentina)], E-mail: hduran@cnea.gov.ar

2009-07-15T23:59:59.000Z

14

Increased apoptosis and DNA double-strand breaks in the embryonic mouse brain in response to very low-dose X-rays but not 50 Hz magnetic fields  

Science Journals Connector (OSTI)

...micronucleus formation, mutation induction and single-strand break...generated using a function generator and power amplifier connected...Assuming the same level of DSB induction, we conclude that the difference...low-dose radiation To assess the induction of 53BP1 foci after low-dose...

2014-01-01T23:59:59.000Z

15

Gene Expression Pathways Activated and Repair of DNA of Double Strand  

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

Pathways Activated and Repair of DNA of Double Strand Pathways Activated and Repair of DNA of Double Strand Breaks (DSBs) Following Low Dose Ionizing Radiation in Human Bronchial Epithelial Cells (HBECs) With and Without Defined Premalignant Oncogenic Changes John Minna University of Texas Southwestern Medical Center at Dallas Abstract We want to determine the effect of low dose ionizing radiation on the molecular progression of lung epithelial cells towards lung cancer. Our endpoints are focused on specific molecular and cellular changes known to be associated with lung cancer development and quantitating those changes as a function of low dose ionizing radiation. We use immortalized human bronchial epithelial cells (HBECs) developed from >40 individuals (including those from current, former, and never smokers, males, females,

16

Effect of catechins and tannins on depleted uranium-induced DNA strand breaks  

Science Journals Connector (OSTI)

The effects of polyphenols on plasmid DNA strand breaks by depleted uranium were studied using four catechins: (+)...2 2+) with hydrogen peroxide (H2O2) were strongly enhanced by EGC, EGCG, MMT, a...

Emiko Matsuda; Akira Nakajima

2012-08-01T23:59:59.000Z

17

Lattice ribbons: A model of double-stranded polymers  

Science Journals Connector (OSTI)

We introduce a discrete ribbon model for double-stranded polymers (such as duplex DNA) where the ribbon is constrained to lie on the simple cubic lattice Z3. The ribbon is made up of a sequence of plaquettes and can either be open or closed. We investigate the growth of the number of ribbons as a function of the number of plaquettes and use Monte Carlo methods to estimate the dimensions of the ribbon, the writhe of the backbone and, in the case of orientable closed ribbons, the linking number of the two boundary curves.

E.J. Janse van Rensburg; E. Orlandini; D.W Sumners; M.C. Tesi; S.G. Whittington

1994-12-01T23:59:59.000Z

18

The effect of double-stranded (DS) RNA on Monosporascus cannonballus culture morphology and virulence  

E-Print Network [OSTI]

Attempts to eliminate double-stranded (ds) RNA elements in Monosporascus cannonballus by subculturing on PDA amended with various concentrations of cycloheximide (O to 15 pg/ml) and incubating at elevated temperatures were partially effective...

Park, Yunjung

2012-06-07T23:59:59.000Z

19

Exotic quantum transport in double-stranded Kronig-Penney model  

E-Print Network [OSTI]

We introduce double-stranded Kronig-Penney model and analyze its transport properties. The asymmetric fluxes between two strands with suddenly alternating localization patterns are found as the energy is varied. The zero-size limit of the internal lines connecting two strands is examined using quantum graph vertices with four edges. We also consider a two-dimensional Kronig-Penney lattice with two types of alternating layers with $\\delta$ and $\\delta'$ connections, and show that the existence of energy bands in which the quantum flux can flow only in selected directions.

Taksu Cheon; Sergey S. Poghosyan

2014-10-31T23:59:59.000Z

20

Single-Molecule Measurements of the Persistence Length of Double-Stranded RNA  

E-Print Network [OSTI]

Single-Molecule Measurements of the Persistence Length of Double-Stranded RNA J. A. Abels, FRNA using two different single-molecule techniques: magnetic tweezers and atomic force microscopy. We deduce. The introduction of these single-molecule techniques for dsRNA analysis opens the way for real-time, quantitative

Dekker, Nynke

Note: This page contains sample records for the topic "double strand breaks" 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

Recognition of double helical DNA by alternate strand triple helix formation  

SciTech Connect (OSTI)

The triplet specificities and required strand orientations of two classes of DNA triple helices can be combined to target double helical sequences containing all four base pairs by alternate strand triple helix formation. This allows for the use of oligonucleotides containing only natural 3{prime}-5{prime} phosphodiester linkages to simultaneously bind both strands of double helical DNA in the major groove. The stabilities and structures of these alternate strand triple helices depend on whether the binding site sequences is 5{prime}-(purine){sub m}(pyrimidine){sub n}-3{prime} or 5{prime}-(pyrimidine){sub m}(purine){sub n}-3{prime}. The sequence type 5{prime}-(purine){sub m}- (pyrimidine){sub n}-3{prime} was targeted with an oligonucleotide consisting of a pyrimidine domain and a purine domain linked by a 3{prime}-5{prime} phosphodiester. To bind the duplex sequence type 5{prime}-(pyrimidine){sub m}(purine){sub n}-3{prime}, the third strand requires at least two nucleotides linking binding domains at the site of crossover in the major groove. A new class of oligonucleotides capable of binding mixed duplex sequences by crossovers in the major groove may be possible. 15 refs., 13 figs.

Beal, P.A.; Dervan, P.B. [California Institute of Technology, Pasadena, CA (United States)

1992-06-17T23:59:59.000Z

22

Artificial and Solar UV Radiation Induces Strand Breaks and Cyclobutane Pyrimidine Dimers in Bacillus subtilis Spore DNA  

Science Journals Connector (OSTI)

...ECOLOGY Artificial and Solar UV Radiation Induces Strand Breaks and Cyclobutane...to solar UV-B and UV-A radiation (Y. Xue and W. L. Nicholson...monitoring studies at Tokyo, Japan. . N. Munakata Biologically...effective dose of solar ultraviolet radiation estimated by spore dosimetry...

Tony A. Slieman; Wayne L. Nicholson

2000-01-01T23:59:59.000Z

23

Spin transport and spin polarization properties in double-stranded DNA  

SciTech Connect (OSTI)

We study the spin-dependent electron transport through a double-stranded DNA (dsDNA) using the Bogoliubov-de Gennes equations and non-equilibrium Green's function method. We calculate the spin-dependent electron conductance and spin-polarization for different lengths, helix angles, twist angles of dsDNA, the environment-induced dephasing factors, and hopping integral. It is shown that the conductance decreases by increasing the length and dephasing factor. Also, we show that the spin-polarization depends on the helical symmetry and the length of DNA. It is shown that the double-stranded DNA can act as a perfect spin filter. Finally, we show that the sign of spin polarization can be inverted from +1 (?1) to ?1 (+1) for some values of hopping integral.

Simchi, Hamidreza, E-mail: simchi@iust.ac.ir [Department of Physics, Iran University of Science and Technology, Narrmak, Tehran 16844 (Iran, Islamic Republic of); Semiconductor Technology Center, Tehran (Iran, Islamic Republic of); Esmaeilzadeh, Mahdi, E-mail: mahdi@iust.ac.ir; Mazidabadi, Hossein [Department of Physics, Iran University of Science and Technology, Narrmak, Tehran 16844 (Iran, Islamic Republic of)

2013-11-21T23:59:59.000Z

24

Proximity-induced superconductivity effect in a double-stranded DNA  

SciTech Connect (OSTI)

We study the proximity-induced superconductivity effect in a double-stranded DNA by solving the Bogoliubov-de Gennes equations and taking into account the effect of thermal fluctuations of the twist angle between neighboring base pairs. We show that the electron conductance is spin-dependent and the conductance of spin up (down) increases (decreases) due to the spin-orbit coupling (SOC). It is found that, for T?

Simchi, Hamidreza, E-mail: simchi@iust.ac.ir [Department of Physics, Iran University of Science and Technology, Narrmak, Tehran 16844 (Iran, Islamic Republic of); Semiconductor Technology Center, Tehran (Iran, Islamic Republic of); Esmaeilzadeh, Mahdi, E-mail: mahdi@iust.ac.ir; Mazidabadi, Hossein [Department of Physics, Iran University of Science and Technology, Narrmak, Tehran 16844 (Iran, Islamic Republic of)

2014-02-07T23:59:59.000Z

25

Double Ended Guillotine Break in a Prismatic Block VHTR Lower Plenum Air Ingress Scenario  

E-Print Network [OSTI]

The double ended guillotine break leading to density-driven air ingress has been identified as a low probability yet high consequence event for Very High Temperature Reactor (VHTR). The lower plenum of the VHTR contains the core support structure...

Hartley, Jessica

2012-10-19T23:59:59.000Z

26

The Novel Poly(ADP-Ribose) Polymerase Inhibitor, AG14361, Sensitizes Cells to Topoisomerase I Poisons by Increasing the Persistence of DNA Strand Breaks  

Science Journals Connector (OSTI)

...topoisomerase I as a resistance mechanism to camptothecin in tumour cells. Cancer Res 2001;61:5926-32. 46 El-Khamisy SF, Saifi GM, Weinfeld M, et al. Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy. Nature...

Lisa M. Smith; Elaine Willmore; Caroline A. Austin; Nicola J. Curtin

2005-12-01T23:59:59.000Z

27

Activation of double-stranded RNA-dependent protein kinase inhibits proliferation of pancreatic ?-cells  

SciTech Connect (OSTI)

Highlights: •PKR can be activated by glucolipitoxicity and pro-inflammatory cytokines in ?-cells. •Activated PKR inhibited ?-cell proliferation by arresting cell cycle at G1 phase. •Activated PKR fully abrogated the pro-proliferative effects of IGF-I on ?-cells. -- Abstract: Double-stranded RNA-dependent protein kinase (PKR) is revealed to participate in the development of insulin resistance in peripheral tissues in type 2 diabetes (T2DM). Meanwhile, PKR is also characterized as a critical regulator of cell proliferation. To date, no study has focused on the impact of PKR on the proliferation of pancreatic ?-cells. Here, we adopted insulinoma cell lines and mice islet ?-cells to investigate: (1) the effects of glucolipotoxicity and pro-inflammatory cytokines on PKR activation; (2) the effects of PKR on proliferation of pancreatic ?-cells and its underlying mechanisms; (3) the actions of PKR on pro-proliferative effects of IGF-I and its underlying pathway. Our results provided the first evidence that PKR can be activated by glucolipitoxicity and pro-inflammatory cytokines in pancreatic ?-cells, and activated PKR significantly inhibited cell proliferation by arresting cell cycle at G1 phase. Reductions in cyclin D1 and D2 as well as increases in p27 and p53 were associated with the anti-proliferative effects of PKR, and proteasome-dependent degradation took part in the reduction of cyclin D1 and D2. Besides, PKR activation abrogated the pro-proliferative effects of IGF-I by activating JNK and disrupting IRS1/PI3K/Akt signaling pathway. These findings indicate that the anti-proliferative actions of PKR on pancreatic ?-cells may contribute to the pathogenesis of T2DM.

Chen, Shan-Shan [Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing (China) [Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing (China); Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing (China); Jiang, Teng [Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing (China)] [Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing (China); Wang, Yi; Gu, Li-Ze [Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing (China) [Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing (China); Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing (China); Wu, Hui-Wen [Laboratory Center for Basic Medical Sciences, Nanjing Medical University, Nanjing (China)] [Laboratory Center for Basic Medical Sciences, Nanjing Medical University, Nanjing (China); Tan, Lan [Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing (China)] [Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing (China); Guo, Jun, E-mail: Guoj@njmu.edu.cn [Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing (China) [Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing (China); Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing (China)

2014-01-17T23:59:59.000Z

28

Chemical repair of base lesions, AP-sites, and strand breaks on plasmid DNA in dilute aqueous solution by ascorbic acid  

SciTech Connect (OSTI)

Highlights: •We report a novel mechanism of radiation protection of DNA by chemical activity of ascorbic acid. •The “chemical repair” of DNA damage was revealed using biochemical assay and chemical kinetics analysis. •We found that ascorbic acid significantly repairs precursors of nucleobase lesions and abasic sites. •However, ascorbic acid seldom repairs precursors of DNA-strand breaks. -- Abstract: We quantified the damage yields produced in plasmid DNA by ?-irradiation in the presence of low concentrations (10–100 ?M) of ascorbic acid, which is a major antioxidant in living systems, to clarify whether it chemically repairs radiation damage in DNA. The yield of DNA single strand breaks induced by irradiation was analyzed with agarose gel electrophoresis as conformational changes in closed circular plasmids. Base lesions and abasic sites were also observed as additional conformational changes by treating irradiated samples with glycosylase proteins. By comparing the suppression efficiencies to the induction of each DNA lesion, in addition to scavenging of the OH radicals derived from water radiolysis, it was found that ascorbic acid promotes the chemical repair of precursors of AP-sites and base lesions more effectively than those of single strand breaks. We estimated the efficiency of the chemical repair of each lesion using a kinetic model. Approximately 50–60% of base lesions and AP-sites were repaired by 10 ?M ascorbic acid, although strand breaks were largely unrepaired by ascorbic acid at low concentrations. The methods in this study will provide a route to understanding the mechanistic aspects of antioxidant activity in living systems.

Hata, Kuniki [Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan) [Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan); Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-mura, Naka-gun, Ibaraki 319-1195 (Japan); Urushibara, Ayumi; Yamashita, Shinichi; Shikazono, Naoya; Yokoya, Akinari [Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-mura, Naka-gun, Ibaraki 319-1195 (Japan)] [Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-mura, Naka-gun, Ibaraki 319-1195 (Japan); Katsumura, Yosuke, E-mail: katsu@n.t.u-tokyo.ac.jp [Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan) [Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan); Nuclear Professional School, School of Engineering, The University of Tokyo, 2-22 Shirakatashirane, Tokai-mura, Naka-gun, Ibaraki 319-1188 (Japan)

2013-05-03T23:59:59.000Z

29

Examining the regulation of DNA end-processing at telomeres and double-strand breaks  

E-Print Network [OSTI]

do not exhibit synthetic growth or DNA damage responsedo not exhibit synthetic growth or DNA damage responsedo not exhibit synthetic growth or DNA damage response

Ballew, Bari Jane

2011-01-01T23:59:59.000Z

30

Evidence for the Involvement of Double-Strand Breaks in Heat-Induced Cell Killing  

Science Journals Connector (OSTI)

...between thermal tolerance for heat killing and heat-induced loss of DNA polymerase b activity...cells with different cell cycle distributions. Error bars, SD. Fig. 5...between thermotolerance and heat-induced H2AX foci formation...

Akihisa Takahashi; Hideki Matsumoto; Kosuke Nagayama; Mutsuko Kitano; Sayako Hirose; Hidenori Tanaka; Eiichiro Mori; Nobuhiro Yamakawa; Jun-ichi Yasumoto; Kazue Yuki; Ken Ohnishi; and Takeo Ohnishi

2004-12-15T23:59:59.000Z

31

The BLM Helicase Is Necessary for Normal DNA Double-Strand Break Repair  

Science Journals Connector (OSTI)

...control, corrected BS, BS, and AT cells in a DSB...EcoRI-cut CIP pUC18 in nuclear extracts are shown. Part...DSB repair assays. The costs of publication of this...abbreviations used are: BS, Blooms syndrome; AT...of linearized supF20 by nuclear extracts from control...

Gregory Langland; James Elliott; Yuling Li; Jenette Creaney; Kathleen Dixon; and Joanna Groden

2002-05-15T23:59:59.000Z

32

Induction of linear tracks of DNA double-strand breaks by -particle irradiation of  

E-Print Network [OSTI]

eukaryotic cells by exposing the cells to particles from a small Americium source (Box 1). Each particle) EQUIPMENT Americium (Am-241) source (SupplementaryMethods and SupplementaryFigs.1­3 online) Polyester film

Cai, Long

33

A MICROBEAM STUDY OF DNA DOUBLE-STRAND BREAKS IN BYSTANDER PRIMARY HUMAN FIBROBLASTS  

E-Print Network [OSTI]

-or-nothing manner(7) . Bystander cells exhibit a variety of characteristics of IR-induced genomic instability

34

Mutations Abrogating VP35 Interaction with Double-Stranded RNA Render Ebola Virus Avirulent in Guinea Pigs  

SciTech Connect (OSTI)

Ebola virus (EBOV) protein VP35 is a double-stranded RNA (dsRNA) binding inhibitor of host interferon (IFN)-{alpha}/{beta} responses that also functions as a viral polymerase cofactor. Recent structural studies identified key features, including a central basic patch, required for VP35 dsRNA binding activity. To address the functional significance of these VP35 structural features for EBOV replication and pathogenesis, two point mutations, K319A/R322A, that abrogate VP35 dsRNA binding activity and severely impair its suppression of IFN-{alpha}/{beta} production were identified. Solution nuclear magnetic resonance (NMR) spectroscopy and X-ray crystallography reveal minimal structural perturbations in the K319A/R322A VP35 double mutant and suggest that loss of basic charge leads to altered function. Recombinant EBOVs encoding the mutant VP35 exhibit, relative to wild-type VP35 viruses, minimal growth attenuation in IFN-defective Vero cells but severe impairment in IFN-competent cells. In guinea pigs, the VP35 mutant virus revealed a complete loss of virulence. Strikingly, the VP35 mutant virus effectively immunized animals against subsequent wild-type EBOV challenge. These in vivo studies, using recombinant EBOV viruses, combined with the accompanying biochemical and structural analyses directly correlate VP35 dsRNA binding and IFN inhibition functions with viral pathogenesis. Moreover, these studies provide a framework for the development of antivirals targeting this critical EBOV virulence factor.

Prins, Kathleen C.; Delpeut, Sebastien; Leung, Daisy W.; Reynard, Olivier; Volchkova, Valentina A.; Reid, St. Patrick; Ramanan, Parameshwaran; Cárdenas, Washington B.; Amarasinghe, Gaya K.; Volchkov, Viktor E.; Basler, Christopher F. (CNRS-INSERM); (Mount Sinai Hospital); (LB-Ecuador); (Iowa State)

2010-10-11T23:59:59.000Z

35

Unzipping Kinetics of Double-Stranded DNA in a Nanopore Alexis F. Sauer-Budge,1,2  

E-Print Network [OSTI]

- technological applications [11,12]. To explore strand separation in a nanopore we designed two synthetic DNA

36

Breaking  

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

2 Volume 9 Issue 3 2 Volume 9 Issue 3 Closer kin for reference . . . . . . . . . . . . . . . . . . . . . . . 2 Breaking down pulp . . . . . . . . . . . . . . . . . . . . . . . . . 3 Single-cell genomics at the DOE JGI . . . . . . . . . . . . 4 In the news . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7 also in this issue MASSIE SANTOS BALLON The Department of Energy focuses on a variety of alternative energy sources rather than putting all its eggs in one basket. At the recently concluded 7th annual Sequencing, Finishing, Analysis in the Future (SFAF) Meeting held June 5-7, 2012, a similar message came through as speakers discussed combining sequencing platforms and conducting hybrid assemblies to produce more useful data in the form of finished genome sequences. Since the first Sequencing in the Future Meeting held in Santa Fe, New Mexico seven years ago, the number of attendees has increased each year from a starting group of 70, reaching a

37

Monosporascus root rot/vine decline: a study of double-stranded (DS) RNA and its role in the pathogenesis of Monosporascus cannonballus on muskmelon  

E-Print Network [OSTI]

Monosporascus Root Rot/Vine Decline: A Study of Double-Stranded (ds) RNA and Its Role in the Pathogenesis of Monosporascus cannonballus on Muskmelon. (May 1997) Jeffrey Samuel Batten, B. A. , Trinity University Co-Chairs of Advisory Committee: Dr. Raymond D... hybridization between cDNA clones (pJB14 and pJB38) and dsRNA from M 96+ cannonballus isolate, Ca91-17 55 IV-2 Agarose gel and corresponding northern blot showing hybridization between cDNA clones (pJB27, pJB28, pJB39, and pJB40) and dsRNA from M...

Batten, Jeffrey Samuel

2012-06-07T23:59:59.000Z

38

Nej1 recruits the Srs2 helicase to DNA double-strand breaks and supports repair by a single-strand annealing-like mechanism  

Science Journals Connector (OSTI)

...strain and its derivatives. Relative to input DNA, galactose-induction in the SRS2-13XMYC WT strain...performed as described in ref. 52. Input DNA was recovered before immunoprecipitation...Genetic screens and selections for cell and nuclear fusion mutants . Methods Enzymol 194 : 774...

Sidney D. Carter; Dana Vigašová; Jiang Chen; Miroslav Chovanec; Stefan U. Åström

2009-01-01T23:59:59.000Z

39

PAXX, a paralog of XRCC4 and XLF, interacts with Ku to promote DNA double-strand break repair  

E-Print Network [OSTI]

regions of PAXX1-204 and PAXXV199A/F201A were amplified from the vectors by PCR and cloned into the pcDNA3.1(-) vector (a gift from Dr. V. Bolanos-Garcia) together with GFP or FLAG tags using In-Fusion (Clontech). Vectors were sequenced by the DNA... -treated or treated for 1 hour with 300 µM phleomycin to induce large numbers of DSBs, before being harvested either at this point or after an additional 1-hour recovery period in phleomycin-free medium after three PBS washes. Cells were washed twice in ice-cold PBS...

Ochi, Takashi; Blackford, Andrew N.; Coates, Julia; Jhujh, Satpal; Mehmood, Shahid; Tamura, Naoka; Travers, Jon; Wu, Qian; Draviam, Viji M.; Robinson, Carol V.; Blundell, Tom L.; Jackson, Stephen P.

2015-01-09T23:59:59.000Z

40

DNA double-strand breaks promote methylation of histone H3 on lysine 9 and transient formation of repressive chromatin  

Science Journals Connector (OSTI)

...7456 ): 50 – 54 . 11 Price BD D’Andrea AD ( 2013...Y Gursoy-Yuzugullu O Price BD ( 2012 ) The...Apochromat/1.25-N.A. oil objective (Leica...Plan APO 63×/1.4 oil M27 lens (magnification...proteins were released by heating for 5 min with 2× sample...

Marina K. Ayrapetov; Ozge Gursoy-Yuzugullu; Chang Xu; Ye Xu; Brendan D. Price

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

Functional role of MRE11 in the repair of particulate chromium(VI)-induced DNA double strand breaks  

Science Journals Connector (OSTI)

...mast cells can behave alternatively as dangerous promoters, innocent bystanders, or...Italo Monzino, the Italian Ministry of Health, and Associazione Italiana Ricerca sul...mast cells can behave alternatively as dangerous promoters, innocent bystanders, or...

Hong Xie; Sandra S. Wise; Seme Dako; Spiros Katsifis; and John P. Wise

2006-04-15T23:59:59.000Z

42

Natural insertions in rice commonly form tandem duplications indicative of patch-mediated double-strand break induction and repair  

Science Journals Connector (OSTI)

...high-throughput sequencing of DSB repair events in humans...conventional models of DSB repair are strained to predict...proposing that long patch base excision repair (BER) on complementary...in their short-read pipeline were true positives...

Justin N. Vaughn; Jeffrey L. Bennetzen

2014-01-01T23:59:59.000Z

43

Double Beta Decay, Lepton Flavour Violation and Collider Signatures of Left-Right Symmetric Models with Spontaneous D Parity Breaking  

E-Print Network [OSTI]

We propose a class of left-right symmetric models (LRSMs) with spontaneous D parity breaking, where SU(2)_R breaks at the TeV scale while discrete left-right symmetry breaks around 10^9 GeV. By embedding this framework in a non-supersymmetric SO(10) Grand Unified Theory (GUT) with Pati-Salam symmetry as the highest intermediate breaking step, we obtain g_R / g_L ~ 0.6 between the right- and left-handed gauge couplings at the TeV scale. This leads to a suppression of beyond the Standard Model phenomena induced by the right-handed gauge coupling. Here we focus specifically on the consequences for neutrinoless double beta decay, low energy lepton flavour violation and LHC signatures due to the suppressed right handed currents. Interestingly, the reduced g_R allows us to interpret an excess of events observed recently in the range of 1.9 TeV to 2.4 TeV by the CMS group at the LHC as the signature of a right handed gauge boson in LRSMs with spontaneous D parity breaking. Moreover, the reduced right-handed gauge co...

Deppisch, Frank F; Patra, Sudhanwa; Sahu, Narendra; Sarkar, Utpal

2014-01-01T23:59:59.000Z

44

Protective effects of pulmonary epithelial lining fluid on oxidative stress and DNA single-strand breaks caused by ultrafine carbon black, ferrous sulphate and organic extract of diesel exhaust particles  

SciTech Connect (OSTI)

Pulmonary epithelial lining fluid (ELF) is the first substance to make contact with inhaled particulate matter (PM) and interacts chemically with PM components. The objective of this study was to determine the role of ELF in oxidative stress, DNA damage and the production of proinflammatory cytokines following physicochemical exposure to PM. Ultrafine carbon black (ufCB, 15 nm; a model carbonaceous core), ferrous sulphate (FeSO{sub 4}; a model transition metal) and a diesel exhaust particle (DEP) extract (a model organic compound) were used to examine the acellular oxidative potential of synthetic ELF and non-ELF systems. We compared the effects of exposure to ufCB, FeSO{sub 4} and DEP extract on human alveolar epithelial Type II (A549) cells to determine the levels of oxidative stress, DNA single-strand breaks and interleukin-8 (IL-8) production in ELF and non-ELF systems. The effects of ufCB and FeSO{sub 4} on the acellular oxidative potential, cellular oxidative stress and DNA single-strand breakage were mitigated significantly by the addition of ELF, whereas there was no decrease following treatment with the DEP extract. There was no significant effect on IL-8 production following exposure to samples that were suspended in ELF/non-ELF systems. The results of the present study indicate that ELF plays an important role in the initial defence against PM in the pulmonary environment. Experimental components, such as ufCB and FeSO{sub 4}, induced the production of oxidative stress and led to DNA single-strand breaks, which were moderately prevented by the addition of ELF. These findings suggest that ELF plays a protective role against PM-driven oxidative stress and DNA damage. -- Highlights: ? To determine the role of ELF in ROS, DNA damage and IL-8 after exposure to PM. ? ufCB, FeSO{sub 4} and DEP extract were used to examine the protective effects of ELF. ? PM-driven oxidative stress and DNA single-strand breakage were mitigated by ELF. ? The findings suggest that ELF has a protective role against PM. ? The synthetic ELF system could reduce the use of animals in PM-driven ROS testing.

Chuang, Hsiao-Chi [School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan (China) [School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan (China); Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan (China); Cheng, Yi-Ling; Lei, Yu-Chen [Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan (China)] [Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan (China); Chang, Hui-Hsien [Institute of Environmental Health, College of Public Health, National Taiwan University, Taipei, Taiwan (China)] [Institute of Environmental Health, College of Public Health, National Taiwan University, Taipei, Taiwan (China); Cheng, Tsun-Jen, E-mail: tcheng@ntu.edu.tw [Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan (China) [Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan (China); Department of Public Health, College of Public Health, National Taiwan University, Taipei, Taiwan (China)

2013-02-01T23:59:59.000Z

45

Identification, Exploitation and Manipulation of BRCA1-Dependent DNA Double-Strand Break and Interstrand Crosslink Repair in Breast and Ovarian Cancer Therapy  

E-Print Network [OSTI]

Expression of functional breast cancer susceptibility gene 1 (BRCA1) in human cancers is associated with resistance to platinum-based chemotherapeutics and poly(ADP-ribose) polymerase (PARP) inhibitors. BRCA1 is a nuclear phosphoprotein with broad...

Stecklein, Shane Richard

2012-05-12T23:59:59.000Z

46

RAD-51-Dependent and -Independent Roles of a Caenorhabditis elegans BRCA2-Related Protein during DNA Double-Strand Break Repair  

Science Journals Connector (OSTI)

...previously described (5). To test pair-wise interactions in yeast cells, Gal4 DNA...four BRCs) (11, 21, 41, 49). Pair-wise alignment of the single BRC of T07E3...In addition, we thank Juliet Reid, Alison Schuldt, John Diffley, Jesper Svejstrup...

Julie S. Martin; Nicole Winkelmann; Mark I. R. Petalcorin; Michael J. McIlwraith; Simon J. Boulton

2005-04-01T23:59:59.000Z

47

Fanconi Anemia FANCG Protein in Mitigating Radiation- and Enzyme-Induced DNA Double-Strand Breaks by Homologous Recombination in Vertebrate Cells  

Science Journals Connector (OSTI)

...Protein in Mitigating Radiation- and Enzyme-Induced...Okayama 701-0192, Japan. Phone: 81-86-462-1111...exhibit increased MMC and radiation-induced chromosome...Okayama 701-0192, Japan. | Journal Article...pharmacology DNA drug effects radiation effects DNA Damage DNA...

Kazuhiko Yamamoto; Masamichi Ishiai; Nobuko Matsushita; Hiroshi Arakawa; Jane E. Lamerdin; Jean-Marie Buerstedde; Mitsune Tanimoto; Mine Harada; Larry H. Thompson; Minoru Takata

2003-08-01T23:59:59.000Z

48

Synergistic Anticancer Activity of Arsenic Trioxide with Erlotinib Is Based on Inhibition of EGFR-Mediated DNA Double-Strand Break Repair  

Science Journals Connector (OSTI)

...erlotinib (B). C, the diagrams on the left show viability...molecular mechanisms. Materials and Methods Chemicals...camera. Subsequent image handling was carried out in Adobe...in vivo. A schematic diagram illustrating the molecular...Administrative, technical, or material support (i.e...

Kushtrim Kryeziu; Ute Jungwirth; Mir Alireza Hoda; Franziska Ferk; Siegfried Knasmüller; Claudia Karnthaler-Benbakka; Christian R. Kowol; Walter Berger; and Petra Heffeter

2013-06-01T23:59:59.000Z

49

Ionizing Radiation Damage to the Folded Chromosome of Escherichia coli K-12: Repair of Double-Strand Breaks in Deoxyribonucleic Acid  

Science Journals Connector (OSTI)

...cell survival Dose (krad) % Recovery...it is in the range of sedimentation...that direct, radiation-induced cross-linking...during repair of ionizing radiation damage (3...is within the range ofsedimentation...biologically significant dose range. Unfortu...

Kevin M. Ulmer; Reinaldo F. Gomez; Anthony J. Sinskey

1979-05-01T23:59:59.000Z

50

Gene Conversion Is Strongly Induced in Human Cells by Double-strand Breaks and Is Modulated by the Expression of BCL-xL  

Science Journals Connector (OSTI)

...with the time of incubation. Factors responsible for the Pasteur...glycolytic and the respiratory energy. This appears to be a unique...date can use only respiratory energy for Pi transport. Rate-limiting factors in glycolysis and transport...

Claudia Wiese; Andrew J. Pierce; Stacey S. Gauny; Maria Jasin; and Amy Kronenberg

2002-03-01T23:59:59.000Z

51

Replication protein A and g-H2AX foci assembly is triggered by cellular response to DNA double-strand breaks  

E-Print Network [OSTI]

pathway that removes the oxidized base lesions from the genomic DNA [6]. Evidence for the stimulation

52

Energies and analytic gradients for a coupled-cluster doubles model using variational Brueckner orbitals: Application to symmetry breaking  

E-Print Network [OSTI]

Energies and analytic gradients for a coupled-cluster doubles model using variational Brueckner Brueckner orbitals in ab initio electronic structure theory. Whereas approximate Brueckner orbitals have Brueckner orbitals. These two procedures yield the same set of exact Brueckner orbitals in the full

Krylov, Anna I.

53

Development of a PIRT (phenomena identification and ranking table) for a postulated double-ended guillotine break in a production reactor  

SciTech Connect (OSTI)

The US Nuclear Regulatory Commission has developed a generic methodology to quantify the uncertainty in best estimate computer codes used to license commercial light water reactors. This same methodology is equally applicable to other reactor designs with regards to providing a technical basis which supports the establishment and demonstration of compliance with safe operating margins. One of the cornerstones of the method is the identification and ranking of phenomena that are important to the postulated scenario. This paper references descriptions of the total methodology, describes the first three steps (i.e, through the identification and ranking of phenomena), and summarizes the results of the application of the methodology to a double-ended guillotine break loss of coolant accident in a production reactor. 6 refs., 8 figs., 5 tabs.

Hanson, R.G.; Wilson, G.E.; Ortiz, M.G. (EG and G Idaho, Inc., Idaho Falls, ID (USA)); Griggs, D.P. (Savannah River Lab., Aiken, SC (USA))

1989-01-01T23:59:59.000Z

54

Structure of gramicidin D-RbCl complex at atomic resolution from low-temperature synchrotron data: interactions of double-stranded gramicidin channel contents and cations with channel wall  

SciTech Connect (OSTI)

Gramicidin D (gD) is a naturally occurring ionophoric antibiotic that forms membrane channels specific for monovalent cations. The crystal structure of the RbCl complex of gD has been determined at 1.14 {angstrom} resolution from low-temperature (100 K) synchrotron-radiation data with a final R of 16%. The structure was refined with anisotropic temperature factors for all non-H atoms and with partial occupancies for many of them. The asymmetric unit in the crystal contains four crystallographically independent molecules that form two right-handed antiparallel double-stranded dimers. There are seven distinct rubidium-binding sites in each dimeric channel. The occupancy factors of Rb cations are between 0.11 and 0.35 and the total ion contents of the two crystallographically independent channels are 1.59 and 1.22 ions, respectively. Although each channel is 'chemically symmetrical', the side-chain conformations, the distributions of rubidium cations and their binding sites in the two independent channels are not. Cations are 'coordinated' by delocalized {pi}-electrons of three to five carbonyl groups that together with peptide backbone chains form the gramicidin channel walls. The water:cation ratio in the channel interior is four or five:one, and five or six waters separate Rb cations during their passage through the channel.

Glówka, M.L.; Olczak, A.; Bojarska, J.; Szczesio, M.; Duax, W.L.; Burkhart, B.M.; Pangborn, W.A.; Langs, D.A.; Wawrzak, Z. (Poland); (NWU); (Hauptman)

2010-03-05T23:59:59.000Z

55

Method for producing labeled single-stranded nucleic acid probes  

DOE Patents [OSTI]

Disclosed is a method for the introduction of unidirectional deletions in a cloned DNA segment. More specifically, the method comprises providing a recombinant DNA construct comprising a DNA segment of interest inserted in a cloning vector, the cloning vector having an f1 endonuclease recognition sequence adjacent to the insertion site of the DNA segment of interest. The recombinant DNA construct is then contacted with the protein pII encoded by gene II of phage f1 thereby generating a single-stranded nick. The nicked DNA is then contacted with E. coli Exonuclease III thereby expanding the single-stranded nick into a single-stranded gap. The single-stranded gapped DNA is then contacted with a single-strand-specific endonuclease thereby producing a linearized DNA molecule containing a double-stranded deletion corresponding in size to the single-stranded gap. The DNA treated in this manner is then incubated with DNA ligase under conditions appropriate for ligation. Also disclosed is a method for producing single-stranded DNA probes. In this embodiment, single-stranded gapped DNA, produced as described above, is contacted with a DNA polymerase in the presence of labeled nucleotides to fill in the gap. This DNA is then linearized by digestion with a restriction enzyme which cuts outside the DNA segment of interest. The product of this digestion is then denatured to produce a labeled single-stranded nucleic acid probe.

Dunn, John J. (Bellport, NY); Quesada, Mark A. (Middle Island, NY); Randesi, Matthew (Upton, NY)

1999-10-19T23:59:59.000Z

56

Interpretation of Sucrose Gradient Sedimentation Pattern of Deoxyribonucleic Acid Fragments Resulting from Random Breaks  

Science Journals Connector (OSTI)

...of the calculated number of nicks per strand of DNA with the known...of the calculated number of nicks per strand of DNA with the known...break locations. The figure of merit suggested by Mar- salgia...X) have varying numbers of nicks per strand. The results seem...

Samuel Litwin; Ezra Shahn; Andrzej W. Kozinski

1969-07-01T23:59:59.000Z

57

Neutrino Physics AAPT Strand Day  

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

Physics AAPT Strand Day NSTA Regional, 2005 Jocelyn Monroe, Columbia University 1. What Is a Neutrino Anyway? 2. The Question Of Neutrino Mass 3. Searching For Neutrino...

58

Mechanisms of liquid sheet breakup and the resulting drop size distributions; Part 2: strand breakup and experimental observations  

SciTech Connect (OSTI)

This paper reports that both a wave mechanism and a perforation mechanism have been proposed as the first step in the breakup of fluid sheets. For black liquor sprays, the dominant mechanism is the formation and growth of perforations according to either mechanism, cylindrical strands develop and subsequently break up to form drops. By combining the results of analyzing the breakup of both the sheet and strands, only a discrete number of drop sizes can be predicted from the wave mechanism.

Spielbauer, T.M.; Aidum, C.K. (Institute of Paper Science and Technology, Atlanta, GA (United States))

1992-03-01T23:59:59.000Z

59

Template Role of Double-Stranded RNA in Tombusvirus Replication  

Science Journals Connector (OSTI)

...repRNA). Briefly, the method for the CFE assay is as follows: in vitro TBSV replication assays were performed by using 2 mul of CFE, 0.25 mug DI-72 (+)repRNA T7-made...32P]UTP in a 20-mul total volume. The CFE assay was performed at 25C for 3 h and stopped...

Nikolay Kovalev; Judit Pogany; Peter D. Nagy

2014-03-05T23:59:59.000Z

60

Chemically accurate coarse graining of double-stranded DNA  

Science Journals Connector (OSTI)

...Phys Chem B 112, 9135 ZZQQhy9145. 8. Chen, A. A & Pappu, R. V. (2007) Parameters of monovalent ions in the amber-99...Chem B 111, 11884 ZZQQhy11887. 14 9. Chen, A. A & Pappu, R. V. (2007) Quantitative characterization of ion pairing...

Alexey Savelyev; Garegin A. Papoian

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

Recognition of Double-Stranded RNA by Proteins  

E-Print Network [OSTI]

. Stephens Peter A. Beal University of Utah, Department of Chemistry, 315 South 1400 East, Room 2020, Salt level. In contrast, Correspondence to: Peter A. Beal; email: beal@chemistry. utah.edu). Contract grant

Beal, Peter A.

62

After Cajun, what next for stranded costs?  

SciTech Connect (OSTI)

Members of FERC have said that the Cajun decision does not pose a serious problem to its proposed rulemaking on stranded costs. But the D.C. Circuit`s Cajun decision, criticizing the concept of recovery for stranded investment in broad terms, promises to make that task difficult, if not impossible. The United States Court of Appeals for the District of Columbia Circuit, in its July 12, 1994 opinion in Cajun Electric Power Cooperative, Inc. v. Federal Energy Regulatory Commission, subjected the Entergy Corporations`s transmission tariff`s stranded investment provision to broad and, perhaps, fatal criticism. The Cajun opinion, premised on basic concepts of antitrust law, was issued at a time of substantial industry discussion on the concept of stranded investment and should greatly impact the decisions of both federal and state regulators on stranded investment.

Pembroke, J.D.

1994-10-01T23:59:59.000Z

63

ORNL rod-bundle heat-transfer test data. Volume 6. Thermal-hydraulic test facility experimental data report for test 3. 05. 5B - double-ended cold-leg break simulation  

SciTech Connect (OSTI)

Thermal-Hydraulic Test Facility (THTF) Test 3.05.5B was conducted by members of the ORNL PWR Blowdown Heat Transfer Separate-Effects Program on July 3, 1980. The objective of the program is to investigate heat transfer phenomena believed to occur in PWRs during accidents, including small and large break loss-of-coolant accidents. Test 3.05.5B was designed to provide transient thermal-hydraulics data in rod bundle geometry under reactor accident-type conditions. Reduced instrument responses are presented. Also included are uncertainties in the instrument responses, calculated mass flows, and calculated rod powers.

Mullins, C.B.; Felde, D.K.; Sutton, A.G.; Gould, S.S.; Morris, D.G.; Robinson, J.J.; Schwinkendorf, K.N.

1982-05-18T23:59:59.000Z

64

Unidirectional Scaffold-Strand Arrangement in DNA Origami  

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

Unidirectional Scaffold-Strand Arrangement in DNA Origami Authors: Han, D., Jiang, S., Samanta, A., Liu, Y., and Yan, H. Title: Unidirectional Scaffold-Strand Arrangement in DNA...

65

Breaking Earth Poems  

E-Print Network [OSTI]

CALIFORNIA RIVERSIDE Breaking Earth Poems A Thesis submittedFestival……………………………………………………………………..…..14 Earth Against Mylittle else in their hands. Earth Against My Back I lay in

Hernandez, Scott Mcnaul

2012-01-01T23:59:59.000Z

66

1 Dda Helicase Tightly Couples Translocation on 2 Single-Stranded DNA to Unwinding of Duplex DNA  

E-Print Network [OSTI]

, Slot 516, Little Rock, AR 72205, USA 9 2 Department of Chemistry, Harding University, 915 East Market Avenue, Searcy, AR 72143, USA 10 3 Laboratorie de Physique Statistique, Ecole Normale Superieure, UPMC 25 Helicases utilize the energy of ATP hydrolysis to unwind double- 26 stranded DNA while

67

Will the Web break?  

Science Journals Connector (OSTI)

...Discussion 1003 51 Discussion Meeting Issue Web science: a new frontier organized and edited...Wendy Hall and James A. Hendler Will the Web break? Jonathan Zittrain * e-mail: zittrain...contribution of 15 to a Discussion Meeting Issue Web science: a new frontier . What is the Web...

2013-01-01T23:59:59.000Z

68

Magnetic instabilities in Nb3Sn strands and cables  

SciTech Connect (OSTI)

This paper describes a model for calculation of magnetic instabilities in superconducting wires with transport current and reports results of instability simulations in Nb{sub 3}Sn strands from different manufactures. The effect of magnetic instabilities on the strand and cable performance is presented and a criterion for the maximum effective sub-element size of strands for high field magnets is formulated.

Kashikhim, Vadim V.; Zlobin, Alexander V.; /Fermilab

2004-11-01T23:59:59.000Z

69

E-Print Network 3.0 - adducts strand breaks Sample Search Results  

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

its complement... to its high reactivity toward DNA and cellular proteins. The major acrolein-DNA adduct, -hydrox- ypropano... -hy- droxynonenal, and acrolein, that readily form...

70

Direct Enzymatic Repair of Deoxyribonucleic Acid Single-Strand Breaks in Dormant Spores  

Science Journals Connector (OSTI)

...cesium-137 Gammator (Radiation Machinery Corp., Parsippany, N.J.). The dose rate was 100 or 300 krads...three tubes for each radiation dose were plated. 'TPhe...produced by more severe radiation doses in the exponential decline...

E. Durban; N. Grecz; J. Farkas

1974-04-01T23:59:59.000Z

71

Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1  

Science Journals Connector (OSTI)

... in spinocerebellar ataxia with axonal neuropathy-1 Sherif F. El-Khamisy SF Gulam M.Saifi GM Michael Weinfeld M Fredrik Johansson F Thomas Helleday T James R. Lupski JR ...

Sherif F. El-Khamisy; Gulam M. Saifi; Michael Weinfeld; Fredrik Johansson; Thomas Helleday; James R. Lupski; Keith W. Caldecott

2005-03-03T23:59:59.000Z

72

SuperBreak: Using Interactivity to Enhance Ergonomic Typing Breaks  

E-Print Network [OSTI]

SuperBreak: Using Interactivity to Enhance Ergonomic Typing Breaks Dan Morris, A.J. Bernheim Brush Repetitive strain injuries and ergonomics concerns have become increasingly significant health issues software mechanisms exist for managing ergonomics; the most well-known are "break-reminder" packages

Rajamani, Sriram K.

73

$R$-Parity Breaking Phenomenology  

E-Print Network [OSTI]

We review various features of the $R$-parity breaking phenomenology, with particular attention to the low energy observables, and to the patterns of the $R$-parity breaking interactions that arise in Grand Unified models.

Francesco Vissani

1996-03-11T23:59:59.000Z

74

Models of Dynamical Supersymmetry Breaking  

E-Print Network [OSTI]

We review a class of models of dynamical supersymmetry breaking, and give a unified description of these models.

Lisa Randall

1997-06-23T23:59:59.000Z

75

Breaking Down the Barriers  

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

Breaking Down the Barriers Breaking Down the Barriers Engaging Agency Legal Resources to be Part of the Solution Daniel Gore US Coast Guard Energy Manager X ESPC ISC Kodiak ESPC/UESC Unit Contract Type Coast Guard Alternatively Financed Project Status Estimated Contract Value (Millions) Under Consideration Initial Proposal Delayed by lack of Contracting Officer or Champion Detailed Design Study Recently Awarded TRACEN Cape May ESPC X TRACEN Petaluma PPA X X ISC San Pedro UESC X X CG Academy ESPC X TRACEN Cape May UESC X Air Station Borenquin ESPC X X Sector New York (3 sites) ESPC X X CG Yard (BAMF) ESPC X E-City ESPC X West Coast - 9 Sites ESPC X Five Essentials for Alt. Financed Project * Site approval * Technical Champion * Contracting Officer * Financial Analyst * Legal Support

76

Energy Loss by Breaking waves  

Science Journals Connector (OSTI)

Observations of the frequency of wind wave breaking in deep water are combined with laboratory estimates of the rate of energy loss a from single breaking wave to infer the net rate of energy transfer to the mixed layer from breaking waves, as a ...

S. A. Thorpe

1993-11-01T23:59:59.000Z

77

The DNA Damage Response Signaling Cascade Regulates Proliferation of the Phytopathogenic Fungus Ustilago maydis in Planta  

Science Journals Connector (OSTI)

...and Sanchez, 2004) in a broad range of eukaryotes, including U. maydis...double-strand breaks in DNA; and ionizing radiation (IR), which generates double-strand...were irradiated at the indicated dose after being spotted. The spots...

Carmen de Sena-Tomás; Alfonso Fernández-Álvarez; William K. Holloman; José Pérez-Martín

2011-04-08T23:59:59.000Z

78

Monetizing stranded gas : economic valuation of GTL and LNG projects.  

E-Print Network [OSTI]

??Globally, there are significant quantities of natural gas reserves that lie economically or physically stranded from markets. Options to monetize such reserves include Gas to… (more)

Black, Brodie Gene, 1986-

2010-01-01T23:59:59.000Z

79

Electroweak Breaking in Supersymmetric Models  

E-Print Network [OSTI]

We discuss the mechanism for electroweak symmetry breaking in supersymmetric versions of the standard model. After briefly reviewing the possible sources of supersymmetry breaking, we show how the required pattern of symmetry breaking can automatically result from the structure of quantum corrections in the theory. We demonstrate that this radiative breaking mechanism works well for a heavy top quark and can be combined in unified versions of the theory with excellent predictions for the running couplings of the model. (To be published in ``Perspectives in Higgs Physics'', G. Kane editor.)

L. E. Ibanez; G. G. Ross

1992-04-01T23:59:59.000Z

80

Vanadium catalysts break down biomass for fuels  

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

Vanadium catalysts break down biomass into useful components Breaking down biomass could help in converting biomass to fuels. March 26, 2012 Biomass Due to diminishing petroleum...

Note: This page contains sample records for the topic "double strand breaks" 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

Breaking down the bubbly | EMSL  

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

down the bubbly Breaking down the bubbly Micromodels redefine how bubbles characterize CO2 gas flow No, it's not a Lego: This Lab-on-a-Chip micromodel (left) was designed to...

82

Sustainability Double Degree Double Degree Info  

E-Print Network [OSTI]

Sustainability Double Degree Double Degree Info: · 36 credits in B for graduation. Sustainability Core: Take each course below for a total of 17 -20 credits. Term/Grade Course _____ ____ *NR 350 (4) Sustainable

Grünwald, Niklaus J.

83

DOE Hydrogen Analysis Repository: Stranded Biogas Decision Tool for Fuel  

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

Stranded Biogas Decision Tool for Fuel Cell Co-Production Stranded Biogas Decision Tool for Fuel Cell Co-Production Project Summary Full Title: Stranded Biogas Decision Tool for Fuel Cell Co-Production Project ID: 257 Principal Investigator: Michael Ulsh Brief Description: This project will explore the feasibility and utility of using stranded biogas resources in fuel cell co-production networks as well as lay the basis for development of analysis and decision-making tools for potential biogas sources and energy end-users to evaluate the economic feasibility of deploying these systems. Performer Principal Investigator: Michael Ulsh Organization: National Renewable Energy Laboratory (NREL) Address: 1617 Cole Blvd. Golden, CO 80401 Telephone: 303-275-3842 Email: michael.ulsh@nrel.gov Website: http://www.nrel.gov

84

Characterizing marine mammal stranding events along the Texas coast  

E-Print Network [OSTI]

The Texas Marine Mammal Stranding Network (TMMSN) is a valuable data resource for the marine mammal community. Limitations of funding and personnel severely impact the ability of the Network to maintain impeccable databases. This research...

Mullins, Ruth Louise

2008-10-10T23:59:59.000Z

85

Characterization of Nb?Sn superconducting strand under pure bending  

E-Print Network [OSTI]

Characterizing the strain-dependent behavior of technological Nb?Sn superconducting strand has been an important subject of research for the past 25 years. Most of the effort has focused on understanding the uniaxial tension ...

Harris, David L., S.M. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

86

Radiation induced strand breakage analyzed by tunel technique  

E-Print Network [OSTI]

RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to the 015ce of Graduate Studies of Texas Ad. M University in partial fu1611ment of the requirements for the dree of MASTER OF SCIENCE May... 2003 Major Subject: Health Physics RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to Texas %%:M University in partial fulfillmen of the requirements for the degree of MASTER OF SCIENCE...

Reynolds, Marissa Dawn

2003-01-01T23:59:59.000Z

87

Dyes designed for high sensitivity detection of double-stranded DNA  

DOE Patents [OSTI]

Novel fluorescent dyes are provided, characterized by having a fluorophore joined to a cationic chain. The dyes are found to provide for high enhancement upon binding to nucleic acid and have strong binding affinities to the nucleic acid, as compared to the fluorophore without the polycationic chain. The dyes find use in detection of dsDNA in gel electrophoresis and solution at substantially higher sensitivities using substantially less dye.

Glazer, Alexander N. (Orinda, CA); Benson, Scott C. (Oakland, CA)

2000-01-01T23:59:59.000Z

88

Intense photoluminescence from dried double-stranded DNA and single-walled carbon nanotube hybrid  

SciTech Connect (OSTI)

Semiconducting single-walled carbon nanotubes (SWNTs) show near-infrared photoluminescence (PL) when they are individually isolated. This was an obstacle to use photonic properties of SWNTs on a solid surface. We show that SWNTs wrapped with DNA maintain intense PL under the dry conditions. SWNTs are well isolated individually by DNA even when the DNA-SWNT hybrids are agglomerated. This finding opens up application of SWNTs to photonic devices.

Ito, M.; Kobayashi, T.; Ito, Y.; Hayashida, T.; Nii, D.; Umemura, K.; Homma, Y. [Department of Physics, Tokyo University of Science, Tokyo 162-8601 (Japan)

2014-01-27T23:59:59.000Z

89

Dissection of Double-Stranded RNA Binding Protein B2 from Betanodavirus  

Science Journals Connector (OSTI)

...ahead of print on 21 March 2007. Beau J. Fenner Winnie Goh Jimmy Kwang Corresponding author...Mol. Biol. 279: 1085-1099. 10 Fenner, B. J., Q. Du, W. Goh, R. Thiagarajan...ELISA. J. Fish Dis. 29: 423-432. 11 Fenner, B. J., W. Goh, and J. Kwang...

Beau J. Fenner; Winnie Goh; Jimmy Kwang

2007-03-21T23:59:59.000Z

90

NERSC's Hopper Breaks Petaflops Barrier  

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

NERSC's Hopper Breaks NERSC's Hopper Breaks Petaflops Barrier NERSC's Hopper Breaks Petaflops Barrier Ranks 5th in the World November 14, 2010 Media Contact: Jon Bashor, jbashor@lbl.gov, 510-486-5849 hopper1.jpg NERSC's Cray XE6-Hopper BERKELEY, Calif.-The Department of Energy's National Energy Research Scientific Computing Center (NERSC), already one of the world's leading centers for scientific productivity, is now home to the fifth most powerful supercomputer in the world and the second most powerful in the United States, according to the latest edition of the TOP500 list, the definitive ranking of the world's top computers NERSC's newest supercomputer, a 153,408 processor-core Cray XE6 system, posted a performance of 1.05 petaflops (quadrillions of calculations per second) running the Linpack benchmark. In keeping with NERSC's tradition of

91

Chiral Symmetry Breaking in Graphene  

E-Print Network [OSTI]

The question of whether the Coulomb interaction is strong enough to break the sublattice symmetry of un-doped graphene is discussed. We formulate a strong coupling expansion where the ground state of the Coulomb Hamiltonian is found exactly and the kinetic hopping Hamiltonian is treated as a perturbation. We argue that many of the properties of the resulting system would be shared by graphene with a Hubbard model interaction. In particular, the best candidate sublattice symmetry breaking ground state is an antiferromagnetic Mott insulator. We discuss the results of some numerical simulations which indicate that the Coulomb interaction is indeed subcritical. We also point out the curious fact that, if the electron did not have spin degeneracy, the tendency to break chiral symmetry would be much greater and even relatively weak Coulomb interactions would likely gap the spectrum.

Gordon W. Semenoff

2011-08-15T23:59:59.000Z

92

c) UNBUNDLING.- Any stranded cost recovery charge authorized by the  

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

c) UNBUNDLING.- Any stranded cost recovery charge authorized by the c) UNBUNDLING.- Any stranded cost recovery charge authorized by the Commission to be assessed by the Tennessee Valley Authority shall be unbundled from the otherwise applicable rates and charges to such customer and separately stated on the bill of such customer. The Tennessee Valley Authority shall not recover wholesale stranded costs from any customer through any other rate, charge, or mechanism. (d) REPORT.-Beginning in fiscal year 2001, as part of the annual management report submitted by the Tennessee Valley Authority to Congress, the Tennessee Valley Authority shall also specifically report: (1) the status of the Tennessee Valley Authority's long-range financial plans and the progress toward its goal of competitively priced electric power, and a general discussion of the Tennessee

93

Method for fabricating multi-strand superconducting cable  

DOE Patents [OSTI]

Multi-strand superconducting cables adapted to be used, for example, to wind a magnet are fabricated by directing wire strands inwardly from spools disposed on the perimeter of a rotating disk and wrapping them diagonally around a tapered mandrel with a flattened cross-sectional shape with a core having a wedge-shaped channel. As the cable is pulled axially, flexibly coupled wedge-shaped pieces are continuously passed through the channel in the mandrel and inserted into the cable as an internal support therefor.

Borden, A.R.

1985-04-01T23:59:59.000Z

94

CTRLWORK AND MACBREAKZ ERGONOMIC BREAK REMINDER SOFTWARE  

E-Print Network [OSTI]

CTRLWORK AND MACBREAKZ ERGONOMIC BREAK REMINDER SOFTWARE SOFTWARE FEATURES: Analyzes your for installation assistance. 1. Please uninstall the former ergonomic break software, RSIGuard, if currently instructions on the screen. For more information, contact the UCSB Ergonomics Program at Ergonomics

California at Santa Barbara, University of

95

Breaking the Biological Barriers to Cellulosic Ethanol, June...  

Energy Savers [EERE]

Breaking the Biological Barriers to Cellulosic Ethanol, June 2006 Breaking the Biological Barriers to Cellulosic Ethanol, June 2006 Breaking the Biological Barriers to Cellulosic...

96

Boeing strike leaves satellites stranded on launch pad  

Science Journals Connector (OSTI)

... About 1,500 Boeing machinists and engineers walked off the job at facilities across the United States on 2 ... 5 November, leaving it stranded atop its Delta IV rocket in Cape Canaveral, Florida. Boeing officials are now assessing whether it will be possible to restart the countdown using non ...

Geoff Brumfiel

2005-11-09T23:59:59.000Z

97

DNA strand breaks measured within 100 milliseconds of irradiation of Escherichia coli by 4 MeV electrons  

Science Journals Connector (OSTI)

...Oslo, Blindern, Oslo, Norway; t Department of Biophysics, Norsk Hydros Institute for Cancer Research, Montebello, Oslo 3...data analysis. Technical assistance from the Linac crew at the Norsk Hydro's Institute for Cancer Research is gratefully acknowledged...

I Johansen; T Brustad; W D Rupp

1975-01-01T23:59:59.000Z

98

Characterization of a parallel-stranded DNA hairpin  

SciTech Connect (OSTI)

Recently, the authors have shown that synthetic DNA containing homooligomeric A-T base pairs can form a parallel-stranded intramolecular hairpin structure. In the present study, they have employed NMR and optical spectroscopy to investigate the structure of the parallel-stranded (PS) DNA hairpin 3{prime}-d(T){sub 8}C{sub 4}(A){sub 8}-3{prime} and the related antiparallel (APS) hair 5{prime}-d(T){sub 8}C{sub 4}(A){sub 8}-3{prime}. The parallel orientation of the strands in the PS oligonucleotide is achieved by introducing a 5{prime}-5{prime} phosphodiester linkage in the hairpin loop. Ultraviolet spectroscopic and fluorescence data of drug binding are consistent with the formation of PS and APS structures, respectively, in these two hairpins. Vacuum circular dichroism measurements in combination with theoretical CD calculations indicate that the PS structure forms a right-handed helix. {sup 31}P NMR measurements indicate that the conformation of the phosphodiester backbone of the PS structure is not drastically different from that of the APS control. The presence of slowly exchanging imino protons at 14 ppm and the observation of nuclear Overhauser enhancement between imino protons and the AH-2 protons demonstrate that similar base pairing and base stacking between T and A residues occur in both hairpins. On the basis of NOESY measurements, they find that the orientation of the bases is in the anti region and that the sugar puckering is in the 2{prime}-endo range. The results indicate a B-like conformation for each of the strands in the stem part of the PS hairpin and reverse Watson-Crick base pairing between the T and A residues. These data are consistent with a previously calculated structure for parallel-stranded DNA.

Germann, M.W.; Vogel, H.J.; Pon, R.T.; van de Sande, J.H. (Univ. of Calgary, Alberta (Canada))

1989-07-25T23:59:59.000Z

99

The concepts of leak before break and absolute reliability of NPP equipment and piping  

SciTech Connect (OSTI)

This paper describes the absolute reliability (AR) concept for ensuring safe operation of nuclear plant equipment and piping. The AR of a pipeline or component is defined as the level of reliability when the probability of an instantaneous double-ended break is near zero. AR analysis has been applied to Russian RBMK and VVER type reactors. It is proposed that analyses required for application of the leak before break concept should be included in AR implementation. The basic principles, methods, and approaches that provide the basis for implementing the AR concept are described.

Getman, A.F.; Komarov, O.V.; Sokov, L.M. [and others

1997-04-01T23:59:59.000Z

100

Specific and Efficient Binding of Xeroderma Pigmentosum Complementation Group A to Double-Strand/Single-Strand DNA Junctions with 3‘- and/or 5‘-ssDNA Branches  

Science Journals Connector (OSTI)

11.?Rademakers, S., Volker, M., Hoogstraten, D., Nigg, A. L., Mone, M. J., Van Zeeland, A. A., Hoeijmakers, J. H., Houtsmuller, A. B., and Vermeulen, W. (2003) Xeroderma pigmentosum group A protein loads as a separate factor onto DNA lesions, Mol. ... Rademakers, Suzanne; Volker, Marcel; Hoogstraten, Deborah; Nigg, Alex L.; Mone, Martijn J.; van Zeeland, Albert A.; Hoeijmakers, Jan H. J.; Houtsmuller, Adriaan B.; Vermeulen, Wim ...

Zhengguan Yang; Marina Roginskaya; Laureen C. Colis; Ashis K. Basu; Steven M. Shell; Yiyong Liu; Phillip R. Musich; Constance M. Harris; Thomas M. Harris; Yue Zou

2006-12-19T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

Structure of the guide-strand-containing argonaute silencing complex  

SciTech Connect (OSTI)

The slicer activity of the RNA-induced silencing complex is associated with argonaute, the RNase H-like PIWI domain of which catalyses guide-strand-mediated sequence-specific cleavage of target messenger RNA. Here we report on the crystal structure of Thermus thermophilus argonaute bound to a 5'-phosphorylated 21-base DNA guide strand, thereby identifying the nucleic-acid-binding channel positioned between the PAZ- and PIWI-containing lobes, as well as the pivot-like conformational changes associated with complex formation. The bound guide strand is anchored at both of its ends, with the solvent-exposed Watson-Crick edges of stacked bases 2 to 6 positioned for nucleation with the mRNA target, whereas two critically positioned arginines lock bases 10 and 11 at the cleavage site into an unanticipated orthogonal alignment. Biochemical studies indicate that key amino acid residues at the active site and those lining the 5'-phosphate-binding pocket made up of the Mid domain are critical for cleavage activity, whereas alterations of residues lining the 2-nucleotide 3'-end-binding pocket made up of the PAZ domain show little effect.

Wang, Yanli; Sheng, Gang; Juranek, Stefan; Tuschl, Thomas; Patel, Dinshaw J. (MSKCC); (HHMI)

2009-01-15T23:59:59.000Z

102

Issues in standard model symmetry breaking  

SciTech Connect (OSTI)

This work discusses the symmetry breaking sector of the SU(2) x U(1) electroweak model. The first two chapters discuss Higgs masses in two simple Higgs models. The author proves low-enery theorems for the symmetry breaking sector: The threshold behavior of gauge-boson scattering is completely determined, whenever the symmetry breaking sector meets certain simple conditions. The author uses these theorems to derive event rates for the superconducting super collider (SSC). The author shows that the SSC may be able to determine whether the interactions of the symmetry breaking sector are strong or weak. 54 refs.

Golden, M.

1988-04-01T23:59:59.000Z

103

System Break-Out Session  

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

Alkaline Membrane Fuel Cell Alkaline Membrane Fuel Cell Workshop System Break-Out Session Anil Trehan (CommScope) Huyen Dinh (NREL) 5/8 - 5/9/11 Washington DC Current State-of-art Performance * MEA level - 200 mW/cm2 peak power at 0.5 V, 60-65C * System level - Air-cooled 2 kW (net) - Energy density is advantage over incumbent battery and Gensets for stationary application - Significant price advantage over PEM fuel cells * Refer to CellEra and Tokuyama presentations for more details Application - Alcohol fuel small power levels Application Description Power range Military Remote sensor < 10 W Soldier Power 20- 50 W Battery charger 300 W Commercial Consumer electronics < 100 W Recreation < 500 W Commercial Application - Hydrogen Description Power range Back-up 1 - 10 kW Material Handling 1 - 10 kW Transportation

104

Explicit CP Breaking and Electroweak Baryogenesis  

Science Journals Connector (OSTI)

......1996 research-article Articles Explicit CP Breaking and Electroweak Baryogenesis Koichi...We investigate spatial behaviors of the CP-violating angle theta by solving the equation...model in the presence of a small explicit CP breaking delta. The moduli of the two Higgs......

Koichi Funakubo; Akira Kakuto; Shoichiro Otsuki; Fumihiko Toyoda

1996-10-01T23:59:59.000Z

105

Vanadium catalysts break down biomass for fuels  

E-Print Network [OSTI]

- 1 - Vanadium catalysts break down biomass for fuels March 26, 2012 Vanadium catalysts break down biomass into useful components Due to diminishing petroleum reserves, non-food biomass (lignocellulose biomass into high-value commodity chemicals. The journal Angewandte Chemie International Edition published

106

Vanadium catalysts break down biomass for fuels  

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

Vanadium catalysts break down biomass for fuels Vanadium catalysts break down biomass for fuels Vanadium catalysts break down biomass into useful components Breaking down biomass could help in converting biomass to fuels. March 26, 2012 Biomass Due to diminishing petroleum reserves, non-food biomass (lignocellulose) is an attractive alternative as a feedstock for the production of renewable chemicals and fuels. Get Expertise Researcher Susan Hanson Inorganic Isotope & Actinide Chem Email Researcher Ruilian Wu Bioenergy & Environmental Science Email Researcher Louis "Pete" Silks Bioenergy & Environmental Science Email Vanadium is an inexpensive, earth-abundant metal that is well suited for promoting oxidations in air. Vanadium catalysts break down biomass into useful components Due to diminishing petroleum reserves, non-food biomass (lignocellulose) is

107

Neutrinoless Double $?$-Decay  

E-Print Network [OSTI]

The neutrinoless double $\\beta$-decay is reviewed. Model independent evidence in favor of neutrino masses and mixing is briefly summarized. The data of the recent experiments on the search for $0\

S. M. Bilenky

2004-03-23T23:59:59.000Z

108

Double Beta Decay  

E-Print Network [OSTI]

The motivation, present status, and future plans of the search for the neutrinoless double beta decay are reviewed. It is argued that, motivated by the recent observations of neutrino oscillations, there is a reasonable hope that neutrinoless double beta decay corresponding to the neutrino mass scale suggested by oscillations, of about 50 meV, actually exists. The challenges to achieve the sensitivity corresponding to this mass scale, and plans to overcome them, are described.

Steven R. Elliott; Petr Vogel

2002-02-27T23:59:59.000Z

109

Rnnotator: an automated de novo transcriptome assembly pipeline from stranded RNA-Seq reads  

E-Print Network [OSTI]

transcriptome assembly pipeline from stranded RNA-Seq readsRnnotator assembly pipeline. Figure 2. Read dereplicationan automated software pipeline that generates transcript

Martin, Jeffrey

2011-01-01T23:59:59.000Z

110

Capillary Break Beneath a Slab: Polyethylene Sheeting over Aggregate...  

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

Capillary Break Beneath a Slab: Polyethylene Sheeting Over Aggregate Southwestern Pennsylvania PROJECT INFORMATION Project Name: Capillary Break Beneath a Slab: Polyethylene...

111

Breaking the Fuel Cell Cost Barrier | Department of Energy  

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

Breaking the Fuel Cell Cost Barrier Breaking the Fuel Cell Cost Barrier Presentation at the AMFC Workshop, May 8, Arlington, VA amfc050811gottesfeldcellera.pdf More Documents &...

112

Regional Test Centers Breaking Down Barriers to Solar Energy...  

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

Regional Test Centers Breaking Down Barriers to Solar Energy Deployment Regional Test Centers Breaking Down Barriers to Solar Energy Deployment September 3, 2014 - 6:16pm Addthis...

113

Airborne observations of the kinematics and statistics of breaking waves  

E-Print Network [OSTI]

v 3 Observations of wave breaking kinematics in fetch-crest length . . . . . C.6 Wave elevation . . . . . . . .breaking waves in the images . . . . . . . . . . . 3.3.3

Kleiss, Jessica M.

2009-01-01T23:59:59.000Z

114

Wave Breaking Dissipation Observed with “SWIFT” Drifters  

Science Journals Connector (OSTI)

Energy dissipation rates during ocean wave breaking are estimated from high-resolution profiles of turbulent velocities collected within 1 m of the surface. The velocity profiles are obtained from a pulse-coherent acoustic Doppler sonar on a wave-...

Jim Thomson

2012-12-01T23:59:59.000Z

115

Ignition with Laser Break-Down  

Science Journals Connector (OSTI)

It is considered that ignition with laser break-down is one of the applications of solid-state lasers. This paper shows basic experimental results indicating the advantages of laser...

Furutani, Hirohide; Saito, Takeshi

116

Regulation of Single Stranded DNA Binding by the C-termini of E. coli SSB protein.  

E-Print Network [OSTI]

Regulation of Single Stranded DNA Binding by the C-termini of E. coli SSB protein. Alexander G@biochem.wustl.edu The homotetrameric E. coli single stranded DNA binding (SSB) protein plays a central role in DNA replication, repair domain (5). The E. coli SSB protein is the prototypical example of the homotetrameric class of SSB

Lohman, Timothy M.

117

New Mechanisms of Gauge-Mediated Supersymmetry Breaking  

E-Print Network [OSTI]

We review the motivation for Gauge-Mediated Supersymmetry Breaking and discuss some recent advances.

Lisa Randall

1997-06-23T23:59:59.000Z

118

The Effect of Wave Breaking on the Wave Energy Spectrum  

Science Journals Connector (OSTI)

The effect of wave breaking on the wave energy spectral shape is examined. The Stokes wave-breaking criterion is first extended to random waves and a breaking wave model is established in which the elevation of breaking waves is expressed in ...

C. C. Tung; N. E. Huang

1987-08-01T23:59:59.000Z

119

Factors affecting stranding of juvenile salmonids by wakes from ship passage in the Lower Columbia River  

SciTech Connect (OSTI)

The effects of deep-draft vessel traffic in confined riverine channels on shorelines and fish are of widespread concern. In the Pacific Northwest of the United States, wakes and subsequent beach run-up from ships transiting the Lower Columbia River have been observed to strand juvenile salmon and other fish. As part of a before-and-after study to assess stranding effects that may be associated with channel deepening, we measured 19 co-variables from observations of 126 vessel passages at three low-slope beaches and used multiple logistic regression to discern the significant factors influencing the frequency of stranding. Subyearling Chinook salmon were 82% of the fish stranded over all sites and seasons. Given a low-slope beach, stranding frequencies for juvenile salmon were significantly related to river location, salmon density in the shallows, a proxy for ship kinetic energy, tidal height, and two interactions. The beach types selected for our study do not include all the beach types along the Lower Columbia River so that the stranding probabilities described here cannot be extrapolated river-wide. A more sophisticated modeling effort, informed by additional field data, is needed to assess salmon losses by stranding for the entire lower river. Such modeling needs to include river-scale factors such as beach type, berms, proximity to navigation channel, and perhaps, proximity to tributaries that act as sources of out-migrating juvenile salmon. At both river and beach scales, no one factor produces stranding; rather interactions among several conditions produce a stranding event and give stranding its episodic nature.

Pearson, Walter H.; Skalski, John R.

2011-09-01T23:59:59.000Z

120

Double-Skin Façades  

Science Journals Connector (OSTI)

The double-skin façade is a system that consists of two building skins separated by a ventilated cavity (Fig. 9.1). The main aim of the cavity is to vary the physical properties of the façade throughout the ye...

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

DOUBLE MAJORS Imaging Science + ...  

E-Print Network [OSTI]

DOUBLE MAJORS Imaging Science + ... Applied Mathematics Biomedical Sciences Computer Science Undergraduate Research Internships and Cooperative Education (Co-op) (optional) Study Abroad WHY IMAGING SCIENCE Science: BS, MS, PhD Color Science: MS, PhD BS + MS/PhD Combos HUMAN VISION BIO- MEDICAL ASTRO- PHYSICS

Zanibbi, Richard

122

Conformal Supersymmetry Breaking and Dynamical Tuningof the Cosmological Constant  

SciTech Connect (OSTI)

We propose 'conformal supersymmetry breaking' models, which tightly relate the conformal breaking scale (i.e. R-symmetry breaking scale) and the supersymmetry breaking scale. The both scales are originated from the constant term in the superpotential through the common source of the R-symmetry breaking. We show that dynamical tuning between those mass scales significantly reduces the degree of fine-tuning necessary for generating the almost vanishing cosmological constant.

Ibe, M.; /SLAC; Nakayama, Y.; /UC, Berkeley; Yanagida, T.T.; /Tokyo U.

2008-03-07T23:59:59.000Z

123

Radiosensitization of MDA-MB-231 breast tumor cells by adenovirus-mediated overexpression of a fragment of the XRCC4 protein  

Science Journals Connector (OSTI)

...Repair of DNA double strand breaks by non-homologous end joining. Biochimie 2003;85:1161-73. 9 El-Khamisy SF, Saifi GM, Weinfeld M, et al. Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1...

Kara R. Jones; David A. Gewirtz; Steven M. Yannone; Shaoming Zhou; David G. Schatz; Kristoffer Valerie; Lawrence F. Povirk

2005-10-01T23:59:59.000Z

124

Breaking Down Stovepipes | Department of Energy  

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

Breaking Down Stovepipes Breaking Down Stovepipes Breaking Down Stovepipes Coordination with other DOE-wide teams and groups An assigned liaison to DOE's NEPA [National Environmental Policy Act] Six Sigma Team Coordination with the Facilities and Infrastructure Steering Committee: Ten-Year Site Plan requirements, streamlining processes for transferring facilities, work for others Communication across sites, programs, and communities to share lessons learned Kansas City Office coordinating with Oak Ridge and the Office of Environmental Management on the Bannister Federal Complex disposal lessons learned Office of Science sharing lessons on private industry opportunities to expand research capabilities at Oak Ridge and Brookhaven National Lab and on the use of opportunities offered by local government

125

The breaking strain of neutron star crust  

SciTech Connect (OSTI)

Mountains on rapidly rotating neutron stars efficiently radiate gravitational waves. The maximum possible size of these mountains depends on the breaking strain of neutron star crust. With multimillion ion molecular dynamics simulations of Coulomb solids representing the crust, we show that the breaking strain of pure single crystals is very large and that impurities, defects, and grain boundaries only modestly reduce the breaking strain to around 0.1. Due to the collective behavior of the ions during failure found in our simulations, the neutron star crust is likely very strong and can support mountains large enough so that their gTavitational wave radiation could limit the spin periods of some stars and might be detectable in large scale interferometers. Furthermore, our microscopic modeling of neutron star crust material can help analyze mechanisms relevant in Magnetar Giant and Micro Flares.

Kadau, Kai [Los Alamos National Laboratory; Horowitz, C J [INDIANA UNIV

2009-01-01T23:59:59.000Z

126

Modelling oil price volatility with structural breaks  

Science Journals Connector (OSTI)

In this paper, we provide two main innovations: (i) we analyze oil prices of two prominent markets namely West Texas Intermediate (WTI) and Brent using the two recently developed tests by Narayan and Popp (2010) and Liu and Narayan, 2010 both of which allow for two structural breaks in the data series; and (ii) the latter method is modified to include both symmetric and asymmetric volatility models. We identify two structural breaks that occur in 1990 and 2008 which coincidentally correspond to the Iraqi/Kuwait conflict and the global financial crisis, respectively. We find evidence of persistence and leverage effects in the oil price volatility. While further extensions can be pursued, the consideration of asymmetric effects as well as structural breaks should not be jettisoned when modelling oil price volatility.

Afees A. Salisu; Ismail O. Fasanya

2013-01-01T23:59:59.000Z

127

Natural and synthetic double-stranded DNA binding studies of macrocyclic tetraamine zinc(II) complexes appended with polyaromatic groups  

Science Journals Connector (OSTI)

...?The characteristic binding mode of zinc(II) complexes of macrocyclic tetraamines (1,4,7,10-tetraazacyclododecane, cyclen) appended with one or two arylmethyl group(s) [(4-quinolyl)methyl-, 1,7-bis(4-quinolyl)...

Emiko Kikuta; Naomi Katsube; E. Kimura

1999-08-01T23:59:59.000Z

128

Investigating Deinococcus radiodurans RecA Protein Filament Formation on Double-Stranded DNA by a Real-Time  

E-Print Network [OSTI]

to desiccation.2 Many hypotheses have been proposed to explain the high- efficiency repair, including a ringlike condensed chromosome structure that could restrict fragment DNA diffusion,3-5 a high Mn2+ concentration: With the aid of an efficient, precise, and almost error-free DNA repair system, Deinococcus radiodurans can

Cox, Michael M.

129

Gauge - Mediated Supersymmetry Breaking in String Compactifications  

SciTech Connect (OSTI)

We provide string theory examples where a toy model of a SUSY GUT or the MSSM is embedded in a compactification along with a gauge sector which dynamically breaks supersymmetry. We argue that by changing microscopic details of the model (such as precise choices of flux), one can arrange for the dominant mediation mechanism transmitting SUSY breaking to the Standard Model to be either gravity mediation or gauge mediation. Systematic improvement of such examples may lead to top-down models incorporating a solution to the SUSY flavor problem.

Diaconescu, Duiliu-Emanuel; /Rutgers U., Piscataway; Florea, Bogdan; Kachru, Shamit; Svrcek, Peter; /Stanford U., Phys. Dept. /SLAC

2006-01-04T23:59:59.000Z

130

WHY SEARCH FOR DOUBLE BETA DECAY?  

E-Print Network [OSTI]

the search for neutrinoless double beta decay may prove verySearching for neutrinoless double beta decay is the onlysensitivity of neutrinoless double beta decay. The potential

Kayser, B.

2010-01-01T23:59:59.000Z

131

C-H..O Hydrogen Bonds in Minor Groove of A-tracts in DNA Double Helices  

E-Print Network [OSTI]

C-H..O Hydrogen Bonds in Minor Groove of A-tracts in DNA Double Helices Anirban Ghosh and Manju-pair as well as cross-strand C-H..O hydrogen bonds in the minor groove. The C2-H2..O2 hydrogen bonds within leads to a narrow minor groove in these regions. # 1999 Academic Press Keywords: C-H..O hydrogen bonds

Bansal, Manju

132

Double Flash | Open Energy Information  

Open Energy Info (EERE)

Flash Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleDoubleFlash&oldid599606"...

133

Domain walls and double bubbles  

Science Journals Connector (OSTI)

...5, which are never double bubbles, that is, none is the global...transverse cylinder, torus bubble, inner tube and double hydrant...transverse cylinder and the stability of the cylinder cross. The...three-dimensional double bubbles and show that the method can...

2009-01-01T23:59:59.000Z

134

Spontaneous symmetry breaking in gauge theories  

Science Journals Connector (OSTI)

...and beyond the discovery of the Higgs boson. organised and edited by John...and beyond the discovery of the Higgs boson . The aim of this historical article...whose features is the now-famous Higgs boson. symmetry breaking|gauge theory...

2015-01-01T23:59:59.000Z

135

Void fraction measurements in breaking waves  

Science Journals Connector (OSTI)

...height H b and depth d b, energy dissipated per unit crest length in each breaking...vortex area A v. The energy dissipated was obtained from measurements of the incident, transmitted...transmitted and reflected wave energies per unit surface area, respectively...

2007-01-01T23:59:59.000Z

136

REPLACE YOUR MERCURY THERMOMETERS BEFORE THEY BREAK!  

E-Print Network [OSTI]

REPLACE YOUR MERCURY THERMOMETERS BEFORE THEY BREAK! Did you know, mercury from broken thermometers to the local environment, if broken thermometers in sinks eventually end at the sanitary sewer plant. Broken mercury thermometers create hazardous waste that is costly to clean up and costly to dispose of. Other

137

Scales of Fermion Mass Generation and Electroweak Symmetry Breaking  

E-Print Network [OSTI]

The scale of mass generation for fermions (including neutrinos) and the scale for electroweak symmetry breaking (EWSB) can be bounded from above by the unitarity of scattering involving longitudinal weak gauge bosons or their corresponding would-be Goldstone bosons. Including the exact n-body phase space we analyze the 2 --> n ($n \\geq 2$) processes for the fermion-(anti)fermion scattering into multiple gauge boson final states. Contrary to naive energy power counting, we demonstrate that as $n$ becomes large, the competition between an increasing energy factor and a phase-space suppression leads to a {\\it strong new upper bound} on the scale of fermion mass generation at a finite value $n=n_s$, which is {\\it independent of the EWSB scale,} $v = (\\sqrt{2}G_F)^{-1/2}$. For quarks, leptons and Majorana neutrinos, the strongest 2 --> n limits range from about 3TeV to 130-170TeV (with $2\\lesssim n_s \\lesssim 24$), depending on the measured fermion masses. Strikingly, given the tiny neutrino masses as constrained by the neutrino oscillations, neutrinoless double-beta decays and astrophysical observations, the unitarity violation of $\

Duane A. Dicus; Hong-Jian He

2005-06-11T23:59:59.000Z

138

GTL or LNG: which is the best way to monetize “stranded” natural gas?  

Science Journals Connector (OSTI)

A large portion of world’s natural gas reserves are “stranded” resources, the drive to monetize these resources leads to the development of gas-to-liquids (GTL) and liquefied natural gas (LNG) technologies. LNG h...

Lichun Dong; Shun’an Wei; Shiyu Tan; Hongjing Zhang

2008-11-01T23:59:59.000Z

139

Energetically Biased DNA Motor Containing a Thermodynamically Stable Partial Strand Displacements State  

Science Journals Connector (OSTI)

Current work in tuning DNA kinetics has focused on changing toehold lengths and DNA concentrations. However, kinetics can also be improved by enhancing the completion probability of the strand displacement process. Here, we execute this strategy by ...

Preston Boone Landon; Joon Lee; Michael Taeyoung Hwang; Alexander H Mo; Chen Zhang; Anthony Neuberger; Brian Meckes; Jose Juan Gutierrez; Gennadi Glinsky; Ratnesh Lal

2014-10-27T23:59:59.000Z

140

Sequence Design for a Test Tube of Interacting Nucleic Acid Strands  

Science Journals Connector (OSTI)

Sequence Design for a Test Tube of Interacting Nucleic Acid Strands ... We describe an algorithm for designing the equilibrium base-pairing properties of a test tube of interacting nucleic acid strands. ... A target test tube is specified as a set of desired “on-target” complexes, each with a target secondary structure and target concentration, and a set of undesired “off-target” complexes, each with vanishing target concentration. ...

Brian R. Wolfe; Niles A. Pierce

2014-10-20T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

Housing and Dining Services Spring Break Information March 2011  

E-Print Network [OSTI]

charge to stay over spring break. Kitchenettes will be open in all residence halls over the break period equipment · Refrigerators with food may be left on · Close and lock your windows and doors · Turn off your

142

Winter Break 2011 (January) Knowledge is Power Program  

E-Print Network [OSTI]

(Wellington, Colorado) Winter Break 2009 (January) � La Union del Pueblo Entero (San Juan, TX) (10 participants) � Community Collaborations, Flood Relief (Atlanta, GA) (10 participants) Weekend Breaks Fall 2009

143

Spectral Energy Dissipation due to Surface Wave Breaking  

Science Journals Connector (OSTI)

A semiempirical determination of the spectral dependence of the energy dissipation due to surface wave breaking is presented and then used to propose a model for the spectral dependence of the breaking strength parameter b, defined in the O. M. ...

Leonel Romero; W. Kendall Melville; Jessica M. Kleiss

2012-09-01T23:59:59.000Z

144

Laboratory Studies of Nonlinear and Breaking Surface Waves  

E-Print Network [OSTI]

A. Breaking-wave generation . . . . . . . . . . . . . . . .of the wave tank. . . . . . . . . . . . . . . . . . . .On steep gravity waves meeting a vertical wall: a triple

Drazen, David

2006-01-01T23:59:59.000Z

145

Breaking the Fuel Cell Cost Barrier  

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

Breaking the Fuel Cell Cost Barrier Breaking the Fuel Cell Cost Barrier AMFC Workshop May 8 th , 2011, Arlington, VA Shimshon Gottesfeld, CTO The Fuel Cell Cost Challenge 2 CellEra's goal - achieve price parity with incumbents earlier on in market entry process ! Mainstream Polymer Electrolyte Fuel Cell ( PEM) Cost Barriers 3 Graphite / stainless steel hardware Acidic membrane Platinum based electrodes Cost barriers deeply embedded in core tech materials BOM-based cost barriers - 90% of stack cost Cost volatility - Platinum $500/Oz - $2,500/Oz The possibility of an OH - ion conducting membrane 4 Non-acidic membrane CellEra Took Advantage of this Opportunity A new type of membrane component with potential for strong fuel cell cost cuts was revealed in 2006, but was accompanied by general industry skepticism

146

Breaking the Code of Cell Communication  

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

Breaking the Code of Cell Communication Breaking the Code of Cell Communication A method that cells use to communicate and coordinate activities has been confirmed by researchers from Cornell University, Monsanto Co., and Argonne. This work could lead to new drugs for the fight against such diseases as cystic fibrosis and the bubonic plague, or to new technologies that perform useful environmental tasks such as filtering water. The structure of the key protein that enables quorum-sensing bacteria to communicate and spread infection. Above: The structure of the key protein that enables quorum-sensing bacteria to communicate and spread infection. Biologists have theorized that bacteria communicate by releasing and sensing chemical pheromones to detect their population densities, an activity called "quorum sensing." This theory was confirmed by

147

Broadband acoustic imaging of breaking waves  

Science Journals Connector (OSTI)

An acoustic array was deployed in the near?surface layer in Saanich Inlet BC to image breaking waves using only the naturally occurring acoustical radiation in the band (160 and 2000 Hz) from the breaking region. The 15?element array was configured as a horizontal cross with an 8?m aperture bottom?moored and positioned nominally 3 m beneath the surface. A novel broadband scheme combined information at six independent frequencies above about 400 Hz to yield unambiguous resolved images. A parametric image analysis shows that the images align closely with the wind and can be observed moving downwind with a speed roughly equal to the dominant phase speed of the wind waves. Absolute power levels are found to be consistent with previously published results. The data also provide inferences regarding the sound generation mechanism at ‘‘collective oscillation’’ frequencies below about 400 Hz. [Work supported by ONR.

Rex K. Andrew; David M. Farmer; R. Lynn Kirlin

1997-01-01T23:59:59.000Z

148

External breaking of ground-state symmetry  

Science Journals Connector (OSTI)

Ground-state symmetry can be broken by an external field. The threshold value of the symmetry-breaking field may be roughly estimated by comparing experimentally the behavior of two identical physical quantities, as functions of the field, for the set of field directions equivalent, with respect to the action, to a group generator. The kinetic coefficients as the functions of magnetic induction B are used as an illustration.

S. Malinowski

1994-01-01T23:59:59.000Z

149

Dec. 13-Jan. 3 Winter Break  

E-Print Network [OSTI]

Dec. 13-Jan. 3 Winter Break Students must be out of residence halls by 10 a.m. on Dec. 13. Students may return to residence halls after 1 p.m. on Jan. 3. Jan. 8 Last day to drop a course without a fee Dance Company Grupo de Rua 8 p.m., Campbell Hall Arts & Lectures tickets may be purchased by calling

California at Santa Barbara, University of

150

Charge breaking bounds in the Zee model  

E-Print Network [OSTI]

We study the possibility that charge breaking minima occur in the Zee model. We reach very different conclusions from those attained in simpler, two Higgs doublet models, and the reason for this is traced back to the existence of cubic terms in the potential. A scan of the Zee model's parameter space shows that CB is restricted to a narrow region of values of the parameters.

A. Barroso; P. M. Ferreira

2005-10-11T23:59:59.000Z

151

IDENTIFYING BREAKS AND CURVATURE IN THE FERMI SPECTRA OF BRIGHT FLAT SPECTRUM RADIO QUASARS  

SciTech Connect (OSTI)

Knowing the site of {gamma}-ray emission in active galactic nucleus jets will do much for our understanding of the physics of the source. In particular, if the emission region is close to the black hole then absorption of {gamma}-rays with photons from the broad-line region could become significant. Such absorption is predicted to produce two specific spectral breaks in the {gamma}-ray spectra of Flat Spectrum Radio Quasars (FSRQs). We test this hypothesis using three years of Fermi observations of nine bright FSRQs. A simple power-law fit to the spectrum of each source can be significantly improved by introducing a break, but the break energies are inconsistent with those predicted by the double-absorber model. In some cases the fit can be further improved by a log-parabola. In addition, by dividing the data from each source into two equal epochs we find that the best description of an object's spectrum often varies between a log-parabola and a broken power law.

Harris, J.; Daniel, M. K.; Chadwick, P. M., E-mail: j.d.harris@durham.ac.uk [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom)

2012-12-10T23:59:59.000Z

152

The impact of age, exposure and genetics on homologous recombination at the engineered repeat sequence in mice  

E-Print Network [OSTI]

Mitotic homologous recombination is a critical pathway for the repair of DNA double-strand breaks and broken replication forks. Although homologous recombination is generally error-free, recombination between misaligned ...

Wiktor-Brown, Dominika M

2007-01-01T23:59:59.000Z

153

MDM2 Is Required for Suppression of Apoptosis by Activated Akt1 in Salivary Acinar Cells  

Science Journals Connector (OSTI)

...serves to hydrolyze starches to simple sugars (97). Expression of amylase was analyzed in all...double-stranded DNA breaks (84), and gamma...suggest that the down-regulation of p53...Biochemistry of human alpha amylase isoenzymes. Crit...

Kirsten H. Limesand; Kathryn L. Schwertfeger; Steven M. Anderson

2006-09-18T23:59:59.000Z

154

E-Print Network 3.0 - adjacent pericarcinomatous foci Sample...  

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

p53 binding protein 1 foci as a biomarker of DNA double strand breaks induced by ionizing radiation... Radiation effect Bysta effect 53 BP1 a b s t r a c t Foci of p53 binding...

155

Comparison and Analysis of Twist Pitch Length Test Methods for ITER Nb3Sn and NbTi Strands  

E-Print Network [OSTI]

A twisted multifilamentary structure is needed for Nb3Sn and NbTi strands to be used in the International Thermonuclear Experimental Reactor (ITER) magnets. As important parameters for the superconducting strands design and production, the twist pitch length and direction of strands must meet the requirements according to ITER Procurement Arrangement (PA) and this must be verified. The technical requirements are 15mm+/-2mm for twist pitch length and right hand twist for direction. The strand twist pitch and the twist direction can be measured on straight sections of strand, which is recognized by the repetition of filament bundles or by the angle of the filaments. Several test methods and results are described and compared in this paper. The accuracy, uncertainty and feasibility of different methods are analyzed and recommended measurement methods are proposed for ITER strands verification.

Fang Liu; Feng Long; Chao Chen; Bo Liu; Yu Wu; Huajun Liu

2013-05-08T23:59:59.000Z

156

The scaling of transport AC losses in Roebel cables with varying strand parameters  

Science Journals Connector (OSTI)

A Roebel cable is a good candidate for low-voltage windings in a high-temperature superconductor (HTS) transformer because of its high current-carrying capability and low AC loss. Transport AC loss measurements were carried out in 1.8 m long 15/5 (fifteen 5 mm wide strands) and 15/4 Roebel cables. The results were compared with those in many Roebel cables composed of 2 mm wide Roebel strands. Comparison of the AC losses hinted that the intrinsic difference in normalized transport AC losses is due to differences in the g/w (ratio of the horizontal gap between the Roebel strands over the Roebel strand width) values. The intrinsic difference was confirmed by measuring transport AC loss in a series of horizontally arranged parallel conductor pairs with various g values. A method to scale transport AC losses in Roebel cables with varying strand parameters was developed. The scaling method will be useful for a rough assessment of AC loss in one-layer solenoid winding coils, such as in a HTS transformer.

Zhenan Jiang; Mike Staines; Nicholas J Long; Rodney A Badcock; Chris Bumby; Evgeny Talantsev; Kent Hamilton; Robert G Buckley; Naoyuki Amemiya

2014-01-01T23:59:59.000Z

157

Neutrinoless Double Phys 135c Spring 2007  

E-Print Network [OSTI]

Neutrinoless Double Beta Decay Phys 135c Spring 2007 Michael Mendenhall #12;Theory Overview #12 beta decays #12;neutrinoless double beta decays n e- p beta decay e #12;neutrinoless double beta decays n e- p beta decay e n e- p n e- p double beta decay e e #12;neutrinoless double beta decays n e- p

Golwala, Sunil

158

Spontaneous Supersymmetry Breaking Induced by Vacuum Condensates  

E-Print Network [OSTI]

We propose a novel mechanism of spontaneous supersymmetry breaking which relies upon an ubiquitous feature of Quantum Field Theory, vacuum condensates. Such condensates play a crucial r\\^{o}le in many phenomena. Examples include Unruh effect, superconductors, particle mixing, and quantum dissipative systems. We argue that in all these phenomena supersymmetry, when present, is spontaneously broken. Evidence for our conjecture is given for the Wess--Zumino model, that can be considered an approximation to the supersymmetric extensions of the above mentioned systems. The magnitude of the effect is estimated for a recently proposed experimental setup based on an optical lattice.

Antonio Capolupo; Marco Di Mauro

2012-08-29T23:59:59.000Z

159

The Monoclinic Double Sulphates Containing Ammonium. Completion of the Double Sulphate Series  

Science Journals Connector (OSTI)

...Double Sulphates Containing Ammonium. Completion of the Double Sulphate Series A. E...properties physical properties refractive index sulfates GeoRef, Copyright 2007, American...double sulphates containing ammonium; completion of the double sulphate series Tutton...

1916-01-01T23:59:59.000Z

160

DNA Single-Strand Breaks and Sister Chromatid Exchanges Induced by Treatment with Hematoporphyrin and Light or by X-Rays in Human NHIK 3025 Cells  

Science Journals Connector (OSTI)

...Biophysics [J. M., T. C.] and Genetics [H. W.], Norsk Hydro's Institute for Cancer Research, Montebello, Oslo...of Biophysics (J. M., T. C.Jand Genetics (H. W.j, Norsk Hydro s Institute for Cancer Research, Montebello, Oslo 3...

Johan Moan; Helga Waksvik; Terje Christensen

1980-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

Hyperthermia Activates a Subset of Ataxia-Telangiectasia Mutated Effectors Independent of DNA Strand Breaks and Heat Shock Protein 70 Status  

Science Journals Connector (OSTI)

...Figure 3. Effect of heat on cell cycle distribution in cells with and without...A, the cell cycle distribution after heat shock is identical...assay was carried out. Heat treatment of purified ATM resulted in the loss of its ability to phosphorylate...

Clayton R. Hunt; Raj K. Pandita; Andrei Laszlo; Ryuji Higashikubo; Manjula Agarwal; Tetsuya Kitamura; Arun Gupta; Nicole Rief; Nobuo Horikoshi; Rajeskaran Baskaran; Ji-Hoon Lee; Markus Löbrich; Tanya T. Paull; Joseph L. Roti Roti; and Tej K. Pandita

2007-04-01T23:59:59.000Z

162

Correlation of superconductor strand, cable, and dipole critical currents in CBA magnets  

SciTech Connect (OSTI)

A calibration between vendor critical current data for 0.0268'' diameter superconductor strand supplied to Fermilab, and the BNL 10/sup -12/..cap omega..cm critical current specification is presented. Vendor critical current data for over 400 Fermilab type billets are shown, both as supplied by the vendor and converted to BNL units. Predictions of cable critical current are made using the sum of the critical currents of the 23 strands, where all strands from the same half billet are assigned the same critical current. The measured critical current shows excellent correlation to the predicted value and is approximately 14 +- 2 percent below it. Colliding Beam Accelerator (CBA) full length dipoles reach the conductor critical current limit, essentially without training. Magnet performance is predictable from the measured critical current of a short sample of cable to within 2%.

Tannenbaum, M.J.; Garber, M.; Sampson, W.B.

1982-01-01T23:59:59.000Z

163

Chip breaking system for automated machine tool  

DOE Patents [OSTI]

The invention is a rotary selectively directional valve assembly for use in an automated turret lathe for directing a stream of high pressure liquid machining coolant to the interface of a machine tool and workpiece for breaking up ribbon-shaped chips during the formation thereof so as to inhibit scratching or other marring of the machined surfaces by these ribbon-shaped chips. The valve assembly is provided by a manifold arrangement having a plurality of circumferentially spaced apart ports each coupled to a machine tool. The manifold is rotatable with the turret when the turret is positioned for alignment of a machine tool in a machining relationship with the workpiece. The manifold is connected to a non-rotational header having a single passageway therethrough which conveys the high pressure coolant to only the port in the manifold which is in registry with the tool disposed in a working relationship with the workpiece. To position the machine tools the turret is rotated and one of the tools is placed in a material-removing relationship of the workpiece. The passageway in the header and one of the ports in the manifold arrangement are then automatically aligned to supply the machining coolant to the machine tool workpiece interface for breaking up of the chips as well as cooling the tool and workpiece during the machining operation.

Arehart, Theodore A. (Clinton, TN); Carey, Donald O. (Oak Ridge, TN)

1987-01-01T23:59:59.000Z

164

Acoustic radiation due to surface wave breaking.  

Science Journals Connector (OSTI)

While wave breaking is continually occurring at the sea surface its transient and sporadic nature makes it difficult to measure. Experimental results are presented that show how acoustic methods can be used as a remote sensor of this fundamental process. Sea surface?generated acoustic radiation (40 to 4000 Hz) is directly related to a quantitative measure of the boundary dynamics; i.e. the Toba variable. The frequency spectrum of the radiation remains remarkably unchanged over a wide range of environmental conditions but the correlation between the sound pressure level and the Toba variable undergoes an abrupt change when spilling breakers start to occur. Results support the use of acoustics to remotely measure the rate of energy being dissipated by wave breaking and the wavelength of the dominant gravity wave component. Theoretical studies have related the field measurements to analytical and laboratory results cited in the literature indicating that remote monitoring of the rate of occurrence and size distribution of ‘‘infant’’ (freshly entrained) bubbles may be possible if splashes on the surface do not radiate significant sound. Signal processing algorithms for the remote measurements discussed above are enhanced by eigenstructure analysis of the measured cross?spectral density matrix. [Work sponsored by ONR and NUSC.

Robert M. Kennedy; Stewart A. L. Glegg

1992-01-01T23:59:59.000Z

165

Exploring Cartan gravity with dynamical symmetry breaking  

E-Print Network [OSTI]

It has been known for some time that General Relativity can be regarded as a Yang-Mills-type gauge theory in a symmetry broken phase. In this picture the gravity sector is described by an $SO(1,4)$ or $SO(2,3)$ gauge field $A^{a}_{\\phantom{a}b\\mu}$ and Higgs field $V^{a}$ which acts to break the symmetry down to that of the Lorentz group $SO(1,3)$. This symmetry breaking mirrors that of electroweak theory. However, a notable difference is that while the Higgs field $\\Phi$ of electroweak theory is taken as a genuine dynamical field satisfying a Klein-Gordon equation, the gauge independent norm $V^2\\equiv \\eta_{ab}V^{a}V^{b}$ of the Higgs-type field $V^a$ is typically regarded as non-dynamical. Instead, in many treatments $V^a$ does not appear explicitly in the formalism or is required to satisfy $V^2 = \\mathrm{const.} \

H. F. Westman; T. G. Zlosnik

2014-03-24T23:59:59.000Z

166

Double acting bit holder  

DOE Patents [OSTI]

A double acting bit holder that permits bits held in it to be resharpened during cutting action to increase energy efficiency by reducing the amount of small chips produced. The holder consist of: a stationary base portion capable of being fixed to a cutter head of an excavation machine and having an integral extension therefrom with a bore hole therethrough to accommodate a pin shaft; a movable portion coextensive with the base having a pin shaft integrally extending therefrom that is insertable in the bore hole of the base member to permit the moveable portion to rotate about the axis of the pin shaft; a recess in the movable portion of the holder to accommodate a shank of a bit; and a biased spring disposed in adjoining openings in the base and moveable portions of the holder to permit the moveable portion to pivot around the pin shaft during cutting action of a bit fixed in a turret to allow front, mid and back positions of the bit during cutting to lessen creation of small chip amounts and resharpen the bit during excavation use.

Morrell, Roger J. (Blommington, MN); Larson, David A. (Minneapolis, MN); Ruzzi, Peter L. (Eagan, MN)

1994-01-01T23:59:59.000Z

167

The dependence of AC loss characteristics on the spacing between strands in YBCO Roebel  

Science Journals Connector (OSTI)

Transport AC loss in a short length of 9/2 YBCO Roebel cable, (i.e. with 9 ? 2 mm width strands), with 0.25 mm spacers between the strands is measured. The frequency varies from 59 to 354 Hz. The result is compared with the loss for a cable without spacers between the strands. Transport AC loss is decreased by the presence of the spacers. The AC loss reduction due to the extra spacing is more significant when the amplitude of the cable current is small compared to the cable Ic. The losses in the cable with spacers normalized by the square of the cable currents plotted against It/Ic approximately agree with those in a cable without spacers. Electromagnetic modelling was carried out for 9/2 and 8/2 cables, modelled as parallel stacks, to assist in understanding the above experimental results. The 8/2 configuration allows the greater use of symmetry to speed computations. Reasonable agreement between the numerical results and the measured results was obtained. This supports suggestions made in previous publications that the transport AC loss in a Roebel cable is roughly equivalent to the loss in two parallel stacks carrying the same current in each tape. The electromagnetic analysis in the 8/2 stacks shows the flux lines are more perpendicular to the strand face when the vertical space between strands is smaller, and this leads to a larger induced electrical field and larger AC loss. At small current amplitudes, the modelling shows the spacing has a strong effect on the AC loss in the surfaced part of the strands.

Zhenan Jiang; K P Thakur; Mike Staines; R A Badcock; N J Long; R G Buckley; A D Caplin; Naoyuki Amemiya

2011-01-01T23:59:59.000Z

168

Manganese oxide helices, rings, strands, and films, and methods for their preparation  

DOE Patents [OSTI]

Methods for the preparation of mixed-valence manganese oxide compositions with quaternary ammonium ions are described. The compositions self-assemble into helices, rings, and strands without any imposed concentration gradient. These helices, rings, and strands, as well as films having the same composition, undergo rapid ion exchange to replace the quaternary ammonium ions with various metal ions. And the metal-ion-containing manganese oxide compositions so formed can be heat treated to form semi-conducting materials with high surface areas.

Suib, Steven L. (Storrs, CT); Giraldo, Oscar (Storrs, CT); Marquez, Manuel (Wheeling, IL); Brock, Stephanie (Detroit, MI)

2003-01-07T23:59:59.000Z

169

Española entrepreneur breaks ground; expansion will create 50...  

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

Espaola entrepreneur breaks ground; expansion will create 50 new jobs Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:...

170

Symmetry Breaking in Graphene Gregory S. Boebinger, National...  

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

Symmetry Breaking in Graphene Gregory S. Boebinger, National High Magnetic Field Laboratory DMR-Award 0654118 DC Field Facility While the laws of physics are often symmetric,...

171

Dynamical electroweak symmetry breaking and the top quark  

SciTech Connect (OSTI)

In this talk, I discuss theories of dynamical electroweak symmetry breaking, with emphasis on the implications of a heavy top quark on the weak interaction {rho} parameter.

Chivukula, R.S. [Boston Univ., MA (United States)

1997-01-01T23:59:59.000Z

172

LANL breaks ground on key sediment control project  

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

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

173

Breaking Through the Glass Ceiling: Recent Experimental Approaches...  

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

Through the Glass Ceiling: Recent Experimental Approaches to Probe the Properties of Supercooled Liquids near the Glass Breaking Through the Glass Ceiling: Recent Experimental...

174

Breaking through the Glass Ceiling: The Correlation Between the...  

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

through the Glass Ceiling: The Correlation Between the Self-Diffusivity in and Krypton Permeation through Deeply Breaking through the Glass Ceiling: The Correlation Between the...

175

Tips for Running an Air Conditioner Without Breaking the Bank  

Broader source: Energy.gov [DOE]

With summer temperatures rising, air conditioners are working overtime, but it is possible to enjoy to cool comfort without breaking the bank.

176

Neutrinoless Double Beta-Decay  

E-Print Network [OSTI]

The neutrinoless double $\\beta$-decay of nuclei is reviewed. We discuss neutrino mixing and 3x3 PMNS neutrino mixing matrix. Basic theory of neutrinoless double $\\beta$-decay is presented in some details. Results of different calculations of nuclear matrix element are discussed. Experimental situation is considered. The Appendix is dedicated to E. Majorana (brief biography and his paper in which the theory of Majorana particles is given)

S. M. Bilenky

2010-01-12T23:59:59.000Z

177

Supplementary Materials: A Partition Function Algorithm for Interacting Nucleic Acid Strands  

E-Print Network [OSTI]

sets used for verification of our algorithm. 1 Preliminaries Throughout this paper, we denote the twoSupplementary Materials: A Partition Function Algorithm for Interacting Nucleic Acid Strands-Ludwigs-Universit¨at, Freiburg, Germany In this supplementary material, we describe in full the algorithm for computing

Will, Sebastian

178

Synthesis of Subgenomic RNAs by Positive-Strand RNA Viruses W. Allen Miller1  

E-Print Network [OSTI]

MINIREVIEW Synthesis of Subgenomic RNAs by Positive-Strand RNA Viruses W. Allen Miller1 is required for sgRNA synthesis, the RNA-dependent RNA polymerase (RdRp) is always translated first, directly, Tymovirus, Potexvirus, Hordeivirus, Tobamovirus, Sobemovirus, and Furovirus genera. Subgenomic RNA synthesis

Miller, W. Allen

179

Multi-strand coronal loop model and filter-ratio analysis  

E-Print Network [OSTI]

We model a coronal loop as a bundle of seven separate strands or filaments. Each of the loop strands used in this model can independently be heated (near their left footpoints) by Alfv\\'en/ion-cyclotron waves via wave-particle interactions. The Alfv\\'en waves are assumed to penetrate the strands from their footpoints, at which we consider different wave energy inputs. As a result, the loop strands can have different heating profiles, and the differential heating can lead to a varying cross-field temperature in the total coronal loop. The simulation of TRACE observations by means of this loop model implies two uniform temperatures along the loop length, one inferred from the 171:195 filter ratio and the other from the 171:284 ratio. The reproduced flat temperature profiles are consistent with those inferred from the observed EUV coronal loops. According to our model, the flat temperature profile is a consequence of the coronal loop consisting of filaments, which have different temperatures but almost similar e...

Bourouaine, S

2009-01-01T23:59:59.000Z

180

DNA barcoding of stranded marine mammals 5 The use of DNA barcoding to monitor the marine  

E-Print Network [OSTI]

barcoding to monitor the marine mammal biodiversity along the French Atlantic coast. In: Nagy ZT, Backeljau of the monitoring of marine mammal biodiversity. Keywords DNA barcoding, COI, control region, marine mammalsDNA barcoding of stranded marine mammals 5 The use of DNA barcoding to monitor the marine mammal

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "double strand breaks" 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

Stranded dolphin stomach contents represent the free-ranging population's diet  

Science Journals Connector (OSTI)

...Submitted posthumously. Diet is a fundamental aspect of animal ecology...foundation of consumer ecology and fundamental to empirical investigations...cause of death or stranding does not appear to significantly...ecology and conservation: a handbook of techniques (eds IL Boyd...

2013-01-01T23:59:59.000Z

182

Supplementary Information for: Integrating DNA Strand Displacement Circuitry with DNA Tile Self-assembly  

E-Print Network [OSTI]

Supplementary Information for: Integrating DNA Strand Displacement Circuitry with DNA Tile Self-assembly of Contents: · Supplementary Figures 1. Native polyacrylamide gel electrophoresis of DNA tile self-assembly 2. UV absorbance annealing and melting curves of DNA tile self-assembly 3. Characterization

Zhang, David Yu

183

Stranded Vehicles: How Gasoline Taxes Change the Value of Households' Vehicle Assets  

E-Print Network [OSTI]

Stranded Vehicles: How Gasoline Taxes Change the Value of Households' Vehicle Assets Meghan Busse pollution caused by the burning of fossil fuels. Argu- ments against energy taxes, and gasoline taxes more incidence of the tax. We study the effect of a gasoline tax using changes in vehicle values. We construct

Rothman, Daniel

184

Las Canteras Strand in Las Palmas Auslandssemester in Las Palmas de Gran Canaria: Welcome to Erasmus  

E-Print Network [OSTI]

Las Canteras Strand in Las Palmas Auslandssemester in Las Palmas de Gran Canaria: Welcome to Erasmus Spanien, Winter- und Sommersemester 2010/11 Gran Canaria hat die eindrucksvolle Eigenschaft nicht Gran Canaria (ULPGC). Für maximalen Genuss des Studienaufenthaltes gilt es einige Hinweise zu befolgen

Greifswald, Ernst-Moritz-Arndt-Universität

185

IMPORTANCE OF NEUTRINOLESS DOUBLE BETA DECAY Abstract  

E-Print Network [OSTI]

number violation in nature and what is its magnitude. The neutrinoless double beta decay experiment can

U. Sarkar; Utpal Sarkar

186

Resonant Instability in Mountain Waves: Breaking at Subcritical Mountain Heights  

E-Print Network [OSTI]

Resonant Instability in Mountain Waves: Breaking at Subcritical Mountain Heights Kevin Viner1 and breaks subcritical critical Nh/U = 0.5 Nh/U = 0.8 #12;Subcritical Instability: An Example three peaks · Nh/U = 0.6 · U/NL = 0.1 · nonrotating · Time-dependent model initialized with subcritical steady wave

187

Breaking wind waves as a source of ambient noise  

Science Journals Connector (OSTI)

A theoretical model for the prediction of ambient noise level due to collective oscillations of air bubbles under breaking wind waves is presented. The model uses a budget of the energy flux from the breaking waves to quantify acoustic power radiation by a bubble cloud. A shift of the noise spectra to lower frequency due to collective bubble oscillation is assumed. The model derives good estimates of the magnitude slope and frequency range of the noise spectra using the wind speed or height of breaking waves.

Pavlo Tkalich; Eng Soon Chan

2002-01-01T23:59:59.000Z

188

RG analysis of magnetic catalysis in dynamical symmetry breaking  

SciTech Connect (OSTI)

We perform the renormalization group analysis on the dynamical symmetry breaking under strong external magnetic field, studied recently by Gusynin, Miransky and Shovkovy. We find that any attractive four-Fermi interaction becomes strong in the low energy, thus leading to dynamical symmetry breaking. When the four-Fermi interaction is absent, the {beta}-function for the electromagnetic coupling vanishes in the leading order in 1/N. By solving the Schwinger-Dyson equation for the fermion propagator, we show that in 1/N expansion, for any electromagnetic coupling, dynamical symmetry breaking occurs due to the presence of Landau energy gap by the external magnetic field. 5 refs.

Hong, Deog Ki [Pusan National Univ., (Korea). Dept. of Physics]|[Florida Univ., Gainesville, FL (United States); Kim, Youngman [Hanyang Univ., Seoul (Korea). Dept. of Physics

1996-05-01T23:59:59.000Z

189

Decimal System and Double Digits  

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

Decimal System and Double Digits Decimal System and Double Digits Name: Ken Status: other Grade: other Country: Canada Date: April 2011 Question: If the origin of the decimal system reflects counting on ten fingers and if zero came into use after the decimal system had been established why did we not create a single symbol for our tenth digit rather than use the double digit 10? If T were to represent the tenth number this would have created a counting system where the number series 1,2...9,T is followed by the same series having a 1 to the left then followed by the same series having a 2 to the left, etc. The T would be the last number in a series of ten single digits rather than be the first number in a series of double digits. The symbol zero would be used only between negative one and positive one because it represents the existence of nothing and, therefore, would have no other function.

190

Sound strand design : designing mechanical joints to facilitate user interaction within a physical representation of digital music  

E-Print Network [OSTI]

This project involved the mechanical design of a modular musical instrument, named the "Sound Strand." Intended to be attached end-to-end one onto another in order to produce a string of music, each module was constructed ...

Shen, Yan, S.B. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

191

Symmetry Breaking of H2 Dissociation by a Single Photon  

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

Symmetry Breaking of H2 Symmetry Breaking of H2 Dissociation by a Single Photon Symmetry Breaking of H2 Dissociation by a Single Photon Print Wednesday, 25 July 2007 00:00 A single hydrogen (or deuterium) molecule consists of only two protons (deuterons) and two electrons and is perfectly symmetric. Linearly polarized photons are similarly symmetric. So one might think that the angular distribution of photoelectrons resulting from photoionization of the molecule by the photon accompanied by dissociation into a hydrogen atom and a hydrogen ion would itself be symmetric. However, an international team of researchers from Germany, Spain, and the U.S. has now shown that this need not be the case. When there are multiple quantum paths for the process, interference between waves in the coherent superposition of electron states (which exists when the molecular fragments are still close together) skews the distribution by breaking the molecular symmetry.

192

Pantex breaks ground on renewable energy project | National Nuclear  

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

breaks ground on renewable energy project | National Nuclear breaks ground on renewable energy project | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Pantex breaks ground on renewable energy project Pantex breaks ground on renewable energy project Posted By Office of Public Affairs Today was a rare windless day on the plains of the Texas Panhandle, but

193

Breaking Ground in Miami-Dade | Department of Energy  

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

Breaking Ground in Miami-Dade Breaking Ground in Miami-Dade Breaking Ground in Miami-Dade October 15, 2010 - 4:28pm Addthis Existing Miami-Dade county water treatment facility. Existing Miami-Dade county water treatment facility. Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs Officials from Miami-Dade County and the U.S. Department of Energy were on hand Wednesday, October 13th to formally break ground on an innovative project that will help improve the energy efficiency of one of the county's major water treatment facilities. The project will upgrade and expand the existing power generation system at the water plant which generates electricity from digester gas produced at the plant. Landfill gas, which is produced from the Solid Waste Department's South Dade Landfill, will be collected and piped across a

194

Pantex breaks ground on renewable energy project | National Nuclear  

National Nuclear Security Administration (NNSA)

breaks ground on renewable energy project | National Nuclear breaks ground on renewable energy project | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Pantex breaks ground on renewable energy project Pantex breaks ground on renewable energy project Posted By Office of Public Affairs Today was a rare windless day on the plains of the Texas Panhandle, but

195

Vermont Yankee simulator qualification: large-break LOCA  

SciTech Connect (OSTI)

Yankee Atomic Electric Company (YAEC) has developed simulator benchmark capabilities for the Seabrook, Maine Yankee, and Vermont Yankee Nuclear Power Station (VYNPS) simulators. The goal is to establish that each simulator has a satisfactory real-time response for different scenarios that will enhance operator training. Vermont Yankee purchased a full-scope plane simulator for the VYNPS, a four-unit boiling water reactor with a Mark-I containment. The following seven benchmark cases were selected by YAEC and VYNPC to supplement the Simulator Acceptance Test Program: (1) control rod swap; (2) partial reactor scram; (3) recirculation pump trip; (4) main steam isolation valve (MSIV) closure without scram, (5) main steamline break, (6) small-break loss-of-coolant accident (LOCA), and (7) large-break LOCA. Five simulator benchmark sessions have been completed. Each session identified simulator capabilities and limitations that needed correction. This paper discusses results from the latest large-break LOCA case.

Loomis, J.N.; Fernandez, R.T.

1987-01-01T23:59:59.000Z

196

Purchasing Power Parity: Error Correction Models and Structural Breaks  

Science Journals Connector (OSTI)

This paper examines purchasing power parity (PPP) behavior using error correction models (ECM) and allowing for structural breaks. We distinguish four different objectives: first, this paper examines which var...

Amalia Morales Zumaquero; Rodrigo Peruga Urrea

2002-01-01T23:59:59.000Z

197

Calculation of the Limiting CESSAR Steam Line Break Transients  

Science Journals Connector (OSTI)

Argonne National Laboratory (ANL), under contract to the Nuclear Regulatory Commission, performed audit calculations of the limiting and Steam Line Break (SLB) [1] transient presented in the CESSAR FSAR. The r...

G. B. Peeler; D. L. Caraher; J. Guttmann

1984-01-01T23:59:59.000Z

198

New Mechanisms of Gauge-Mediated Supersymmetry Breaking  

E-Print Network [OSTI]

We introduce new mechanisms for the communication of supersymmetry breaking via gauge interactions. These models do not require complicated dynamics to induce a nonvanishing F term for a singlet. The first class of models communicates supersymmetry breaking to the visible sector through a ``mediator" field that transforms under both a messenger gauge group of the dynamical supersymmetry breaking sector and the standard model gauge group. This model has distinctive phenomenology; in particular, the scalar superpartners should be heavier by at least an order of magnitude than the gaugino superpartners. The second class of models has phenomenology more similar to the ``standard" messenger sectors. A singlet is incorporated, but the model does not require complicated mechanisms to generate a singlet F term. The role of the singlet is to couple fields from the dynamical symmetry breaking sector to fields transforming under the standard model gauge group. We also mention a potential solution to the $\\mu$ problem.

Lisa Randall

1996-12-19T23:59:59.000Z

199

Some Evidence of Colinear Wind Stress and Wave Breaking  

Science Journals Connector (OSTI)

Data collected during the Surface Waves and Processes Program are employed to investigate a possible interrelation between wind stress and surface wave breaking. From comparison of data from 15 half-hour long time segments, the directions of the ...

Karl F. Rieder; Jerome A. Smith; Robert A. Weller

1996-11-01T23:59:59.000Z

200

Symmetry Breaking of H2 Dissociation by a Single Photon  

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

Symmetry Breaking of H2 Dissociation by a Single Photon Print A single hydrogen (or deuterium) molecule consists of only two protons (deuterons) and two electrons and is perfectly...

Note: This page contains sample records for the topic "double strand breaks" 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

Statistical estimation of water distribution system pipe break risk  

E-Print Network [OSTI]

The deterioration of pipes in urban water distribution systems is of concern to water utilities throughout the world. This deterioration generally leads to pipe breaks and leaks, which may result in reduction in the water-carrying capacity...

Yamijala, Shridhar

2009-05-15T23:59:59.000Z

202

Sets of Symmetry Breaking Constraints Barbara M. Smith  

E-Print Network [OSTI]

Sets of Symmetry Breaking Constraints Barbara M. Smith Cork Constraint Computation Centre, University College Cork, Ireland b.m.smith@4c.ucc.ie Abstract [Puget, 2004] has shown that if the symmetry

Smith, Barbara M.

203

Energy Dissipation of Unsteady Wave Breaking on Currents  

Science Journals Connector (OSTI)

Energy dissipation for unsteady deep-water breaking in wave groups on following and opposing currents, including partial wave-blocking conditions, was investigated by detailed laboratory measurements. A range of focusing wave conditions, ...

Aifeng Yao; Chin H. Wu

2004-10-01T23:59:59.000Z

204

5-MW Dynamometer Ground Breaking | Department of Energy  

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

Energy Laboratory in Golden, Colorado, broke ground for a new 5-MW dynamometer test facility. When complete, the new facility will more than double the wind turbine...

205

NEUTRINOLESS DOUBLE BETA DECAY AND ITS “INVERSE”  

E-Print Network [OSTI]

subsequently published arguments, non-observation of neutrinoless double beta decay has, to date, no bearing on

Clemens A. Heusch; Peter Minkowski

1996-01-01T23:59:59.000Z

206

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do

Patrick J. O’donnell; Utpal Sarkar

1993-01-01T23:59:59.000Z

207

A Comparison of Measured and Predicted Wave-Impact Pressures from Breaking and Non-breaking Waves  

E-Print Network [OSTI]

Impact loads from waves on vessels and coastal structures are complex and may involve wave breaking, which has made these loads difficult to estimate numerically or empirically. Results from previous experiments have shown a wide range of forces and pressures measured from breaking and nonbreaking waves, with no clear trend between wave characteristics and the localized forces and pressures that they generate. In 2008, a canonical breaking wave impact data set was obtained at the Naval Surface Warfare Center, Carderock Division, by measuring the distribution of impact pressures of incident nonbreaking and breaking waves on one face of a cube. This experimental effort was sponsored by the Office of Naval Research (ONR), under the Dynamics of Interacting Platforms Program, Program Manager Dr. Ron Joslin. The effects of wave height, wavelength, face orientation, face angle, and submergence depth were investigated. Additionally, a limited number of runs were made at low forward speeds, ranging from about 0.5 to 2...

Fullerton, Anne M; Brewton, Susan; Brucker, Kyle A; O'Shea, Thomas T; Dommermuth, Douglas G

2014-01-01T23:59:59.000Z

208

Guardian | Cracking future for fabric that heals its own breaks Cracking future for fabric that heals its own breaks  

E-Print Network [OSTI]

that heals its own breaks Ian Sample looks at how self-healing materials inspired by nature could make cars. Manufacturing costs are dominated by the need to make high- performance materials as defect-free as possible

Aksay, Ilhan A.

209

Doubling of atmospheric methane supported  

SciTech Connect (OSTI)

Atmospheric methane over the past 27,000 years was measured by analyzing air trapped in glacial ice in Greenland and Antarctica. Atmospheric concentrations were stable over that period until about 200 years b.p. In the last 200 years they have more than doubled. This change in concentration is correlated with the increase in human population; the implications for climate modification are discussed. 1 figure, 3 references.

Kerr, R.A.

1984-11-23T23:59:59.000Z

210

Strategic electricity sector assessment methodology under sustainability conditions: a Swiss case study on CO2 emissions, competition and stranded costs  

Science Journals Connector (OSTI)

Designing and implementing a sustainable energy sector will be a key element of defining and creating a sustainable society. In the electricity industry, the question of strategic planning for sustainability seems to conflict with the shorter time horizons associated with market forces as deregulation replaces vertical integration. In order to address such questions, a project called SESAMS (Strategic Electricity Sector Assessment Methodology under Sustainability) has been established to develop electricity sector planning methods related to sustainability. This effort is part of the Alliance for Global Sustainability (AGS) formed by the Massachusetts Institute of Technology (MIT), the Swiss Federal Institutes of Technology (ETHZ and EPFL), and the University of Tokyo (UT). The initial phase of SESAMS in 1997 created a methodology integrating multi-scenario simulation, life-cycle analysis and multi-criteria decision analysis. This 1998 case study has expanded the methodology to study the transitional effects of deregulation associated with the issues of stranded cost. This analysis has studied the inclusion of different classes of stranded assets, different recovery periods, and recovery of costs on a fixed vs. variable (per kWh) basis. On a societal basis, stranded costs are a zero-sum transfer payment, but the ownership patterns of stranded assets mean that compensation for stranded assets will produce relative winners and losers. These winners and losers shift according to the stranded cost and other options present in different scenarios. The results of the stranded cost analysis are integrated with updated multi-criteria trade-off analysis and life-cycle analysis results, based on expanded system boundaries.

W. Schenler; Adrian V. Gheorghe; Warren Stephen Connors; Stefan Hirschberg; Pierre-Andre Haldi

2002-01-01T23:59:59.000Z

211

Are high-redshift DLA galxies Lyman-break galaxies?  

E-Print Network [OSTI]

We use deep HST STIS and NICMOS images of three spectroscopically confirmed galaxy counterparts of high-redshift damped Ly-alpha (DLA) absorbers (one of which is a new discovery) to test the hypothesis that high-redshift DLA galaxies are Lyman-break galaxies. If this hypothesis is correct the emission properties of DLA galaxies must lie within the range of emission properties measured for Lyman-break galaxies of similar absolute magnitude. This will be true regardless of selection biases in the sample of detected DLA galaxies. We test this prediction using several emission properties: half-light radius, radial profile (Sersic n parameter), optical-to-near-infrared colour, morphology, Ly alpha emission equivalent width, and Ly alpha emission velocity structure. In all cases the measured values for the DLA galaxies lie within the range measured for the population of Lyman-break galaxies. None of the measurements is in conflict with the prediction. We conclude that the measured emission properties of the three DLA galaxies studied here are consistent with the conjecture that high-redshift DLA galaxies are Lyman-break galaxies. We show that this result does not conflict with the observation that the few high-redshift DLA galaxies discovered are mostly fainter than spectroscopically confirmed L* Lyman-break galaxies.

P. Møller; S. J. Warren; S. M. Fall; J. U. Fynbo; P. Jakobsen

2002-03-21T23:59:59.000Z

212

SB Electronics Breaks Ground on New Factory | Department of Energy  

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

SB Electronics Breaks Ground on New Factory SB Electronics Breaks Ground on New Factory SB Electronics Breaks Ground on New Factory April 29, 2010 - 5:22pm Addthis U.S. Rep. Peter Welch (from left), Vermont Lt. Gov. Brian Dubie, SBE board member Win Hunter, SBE board chair Stan Fishkin, Assi U.S. Rep. Peter Welch (from left), Vermont Lt. Gov. Brian Dubie, SBE board member Win Hunter, SBE board chair Stan Fishkin, Assi Paul Lester Communications Specialist, Office of Energy Efficiency and Renewable Energy A Vermont company broke ground on a new factory that will produce cutting-edge technology for electric and hybrid cars and create more than 100 jobs. The event ushering in SB Electronics' power ring capacitor facility in Barre was attended by Vermont Gov. Jim Douglas and federal, state and local

213

Deputy Secretary Poneman Attends Ground Breaking at Tennessee Advanced  

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

Attends Ground Breaking at Tennessee Attends Ground Breaking at Tennessee Advanced Vehicle Battery Plant Deputy Secretary Poneman Attends Ground Breaking at Tennessee Advanced Vehicle Battery Plant May 26, 2010 - 12:00am Addthis Smyrna, TN - Today, U.S. Deputy Secretary of Energy Daniel Poneman participated in the groundbreaking ceremony for Nissan North America's advanced battery manufacturing facility in Smyrna, Tennessee. This past January the Department closed a $1.4 billion loan with Nissan North America to retool the Smyrna factory to build advanced electric automobiles and an advanced battery manufacturing facility. "I'm excited about the future we have begun to build here today -- a future where America's workers have good jobs, making clean cars that will reduce our dependence on oil and help us transition to a clean energy economy,"

214

Symmetry Breaking of H2 Dissociation by a Single Photon  

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

Symmetry Breaking of H2 Dissociation by a Single Photon Print Symmetry Breaking of H2 Dissociation by a Single Photon Print A single hydrogen (or deuterium) molecule consists of only two protons (deuterons) and two electrons and is perfectly symmetric. Linearly polarized photons are similarly symmetric. So one might think that the angular distribution of photoelectrons resulting from photoionization of the molecule by the photon accompanied by dissociation into a hydrogen atom and a hydrogen ion would itself be symmetric. However, an international team of researchers from Germany, Spain, and the U.S. has now shown that this need not be the case. When there are multiple quantum paths for the process, interference between waves in the coherent superposition of electron states (which exists when the molecular fragments are still close together) skews the distribution by breaking the molecular symmetry.

215

Symmetry Breaking of H2 Dissociation by a Single Photon  

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

Symmetry Breaking of H2 Dissociation by a Single Photon Print Symmetry Breaking of H2 Dissociation by a Single Photon Print A single hydrogen (or deuterium) molecule consists of only two protons (deuterons) and two electrons and is perfectly symmetric. Linearly polarized photons are similarly symmetric. So one might think that the angular distribution of photoelectrons resulting from photoionization of the molecule by the photon accompanied by dissociation into a hydrogen atom and a hydrogen ion would itself be symmetric. However, an international team of researchers from Germany, Spain, and the U.S. has now shown that this need not be the case. When there are multiple quantum paths for the process, interference between waves in the coherent superposition of electron states (which exists when the molecular fragments are still close together) skews the distribution by breaking the molecular symmetry.

216

Deputy Secretary Poneman Attends Ground Breaking at Tennessee Advanced  

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

Poneman Attends Ground Breaking at Tennessee Poneman Attends Ground Breaking at Tennessee Advanced Vehicle Battery Plant Deputy Secretary Poneman Attends Ground Breaking at Tennessee Advanced Vehicle Battery Plant May 26, 2010 - 12:00am Addthis Smyrna, TN - Today, U.S. Deputy Secretary of Energy Daniel Poneman participated in the groundbreaking ceremony for Nissan North America's advanced battery manufacturing facility in Smyrna, Tennessee. This past January the Department closed a $1.4 billion loan with Nissan North America to retool the Smyrna factory to build advanced electric automobiles and an advanced battery manufacturing facility. "I'm excited about the future we have begun to build here today -- a future where America's workers have good jobs, making clean cars that will reduce our dependence on oil and help us transition to a clean energy economy,"

217

Wind Power Reliability: Breaking Down a Barrier | Department of Energy  

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

Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier June 25, 2010 - 12:16pm Addthis EnerNex Corporation is developing documentation and validating generic wind turbine and plant models that test reliability. | File photo EnerNex Corporation is developing documentation and validating generic wind turbine and plant models that test reliability. | File photo Stephen Graff Former Writer & editor for Energy Empowers, EERE The steady increase of wind power on the grid presents new challenges for power system operators charged with making sure the grid stays up and running. "We need to ensure that we are going down a path that will lead to better reliability [with wind power]," said Bob Zavadil, an executive vice

218

Breaking a Pocket of Resistance in the Fight Against Cancer  

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

Breaking a Pocket of Resistance in Breaking a Pocket of Resistance in the Fight Against Cancer Breaking a Pocket of Resistance in the Fight Against Cancer Print Thursday, 12 December 2013 11:55 ras protein The new class of inhibitors interacts with a specific mutation (Glycine to Cysteine) associated with a number of types of lung cancer. Mutations in the protein K-RAS are a very common cause for certain types of human cancers and are generally associated with a poor response to standard therapies. RAS, an abbreviation of Rat Sarcoma, is a nucleotide binding protein that responds to chemical signals (nucleotides). When in the "on" state, RAS activates other proteins, resulting in a cascade of biochemical processes; in the "off" state, RAS remains inactive. Mutations in the RAS

219

Energy Department Training Breaks New Ground | Department of Energy  

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

Training Breaks New Ground Training Breaks New Ground Energy Department Training Breaks New Ground December 3, 2013 - 1:00pm Addthis The Federal Energy Management Program is now an authorized provider of continuing education units from the International Association for Continuing Education and Training. Watch the video above to learn more. Timothy Unruh FEMP Program Manager High quality education for federal government employees helps streamline operations, improve services, and ensure that taxpayer dollars are spent wisely. This is why I am pleased to announce the Energy Department's Federal Energy Management Program (FEMP) has earned the designation as an "Authorized Provider" of continuing education units (CEUs) by the prestigious International Association for Continuing Education and Training

220

NREL: News Feature - NREL Breaks Down Walls for Biofuels  

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

NREL Breaks Down Walls for Biofuels NREL Breaks Down Walls for Biofuels November 30, 2009 Researchers at the National Renewable Energy Laboratory (NREL) and ethanol producers are racing to come up with ways to make ethanol from cellulosic biomass that are cheaper and easier to produce than current methods. But they are hitting a wall. Cell walls in plants are making the production of cellulosic ethanol a challenge. So researchers are creating their own computer program to help model and break down the tiny fibers of cellulose - or fibrils - found in plant cells. Although ethanol is becoming more available to consumers, NREL is working closely with the U.S. Department of Energy (DOE) to meet a quickly approaching goal to produce competitively priced ethanol for $1.50 per gallon by 2012. Why the rush? DOE believes this is the price at which

Note: This page contains sample records for the topic "double strand breaks" 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

Lorentz symmetry breaking as a quantum field theory regulator  

Science Journals Connector (OSTI)

Perturbative expansions of quantum field theories typically lead to ultraviolet (short-distance) divergences requiring regularization and renormalization. Many different regularization techniques have been developed over the years, but most regularizations require severe mutilation of the logical foundations of the theory. In contrast, breaking Lorentz invariance, while it is certainly a radical step, at least does not damage the logical foundations of the theory. I shall explore the features of a Lorentz symmetry breaking regulator in a simple polynomial scalar field theory and discuss its implications. In particular, I shall quantify just “how much” Lorentz symmetry breaking is required to fully regulate the quantum theory and render it finite. This scalar field theory provides a simple way of understanding many of the key features of Ho?ava’s recent article [Phys. Rev. D 79, 084008 (2009)] on 3+1 dimensional quantum gravity.

Matt Visser

2009-07-23T23:59:59.000Z

222

Modulated Tool-Path (MTP) Chip Breaking System  

SciTech Connect (OSTI)

The Modulated Tool-Path (MTP) Chip Breaking System produces user-selectable chip lengths and workpiece finishes and is compatible with any material, workpiece shape, and depth of cut. The MTP chip breaking system consistently creates the desired size of chips regardless of workpiece size, shape, or material, and the machine operator does not need to make any adjustments during the machining operation. The system's programmer configures the part program that commands the machine tool to move in a specific fashion to deliver the desired part size, shape, chip length, and workpiece surface finish. The MTP chip breaking system helps manufacturers avoid the detrimental effects of continuous chips, including expensive repair costs, delivery delays, and hazards to personnel.

Graham, K. B.

2010-04-01T23:59:59.000Z

223

Ground Breaking of Blythe Solar Power Project | Department of Energy  

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

Ground Breaking of Blythe Solar Power Project Ground Breaking of Blythe Solar Power Project Ground Breaking of Blythe Solar Power Project June 20, 2011 - 2:16pm Addthis Secretary Chu Secretary Chu Former Secretary of Energy What will the project do? Blythe Solar Power Project will generate 1,000 megawatts of solar power, enough to power more than 300,000 single-family homes a year. Back in April, I had the pleasure of announcing that the Department of Energy had extended our largest conditional loan guarantee for a solar project - $2.1 billion to support a concentrating solar thermal power plant near Blythe, California. Last Friday, the Blythe Solar Power Project broke ground, beginning construction of a project that upon completion will generate 1,000 megawatts of solar power, enough to power more than 300,000

224

Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor |  

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

Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor February 14, 2013 - 12:36pm Addthis Marius Stan, computational energy scientist from Argonne National Lab, submits his verification photo as part of an informal question and answer session with Internet users on the Ask Me Anything section of the social website Reddit. Marius Stan, computational energy scientist from Argonne National Lab, submits his verification photo as part of an informal question and answer session with Internet users on the Ask Me Anything section of the social website Reddit. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is an Reddit AMA? AMA stands for "Ask me anything."

225

Margins in high temperature leak-before-break assessments  

SciTech Connect (OSTI)

Developments in the defect assessment procedure R6 to include high-temperature mechanisms in Leak-before-Break arguments are described. In particular, the effect of creep on the time available to detect a leak and on the crack opening area, and hence leak rate, is discussed. The competing influence of these two effects is emphasized by an example. The application to Leak-before-Break of the time-dependent failure assessment diagram approach for high temperature defect assessment is then outlined. The approach is shown to be of use in assessing the erosion of margins by creep.

Budden, P.J.; Hooton, D.G.

1997-04-01T23:59:59.000Z

226

Charge and CP symmetry breaking in two Higgs doublet models  

E-Print Network [OSTI]

We show that, for the most generic model with two Higgs doublets possessing a minimum that preserves the $U(1)_{em}$ symmetry, charge breaking (CB) cannot occur. If CB does not occur, the potential could have two different minima, and there is in principle no general argument to show which one is the deepest. The depth of the potential at a stationary point that breaks CB or CP, relative to the $U(1)_{em}$ preserving minimum, is proportional to the squared mass of the charged or pseudoscalar Higgs, respectively.

A. Barroso; P. M. Ferreira; R. Santos

2005-11-07T23:59:59.000Z

227

Recombinant Modified Vaccinia Virus Ankara Generating Excess Early Double-Stranded RNA Transiently Activates Protein Kinase R and Triggers Enhanced Innate Immune Responses  

Science Journals Connector (OSTI)

...interferon beta) were purchased from PBL Assay Science (Piscataway, NJ, USA). Murine IFN-alpha...adaptive immunity by the innate immune system. Science 327 :291-295. doi: 10.1126/science.1183021 . 6. Frenz, T , Z Waibler, J Hofmann...

Michael Wolferstätter; Marc Schweneker; Michaela Späth; Susanne Lukassen; Marieken Klingenberg; Kay Brinkmann; Ursula Wielert; Henning Lauterbach; Hubertus Hochrein; Paul Chaplin; Mark Suter; Jürgen Hausmann

2014-10-08T23:59:59.000Z

228

Noncatalytic Ions Direct the RNA-Dependent RNA Polymerase of Bacterial Double-Stranded RNA Virus ?6 from De Novo Initiation to Elongation  

Science Journals Connector (OSTI)

...the interaction between heparin and a battery of mutant enzymes (Fig. 4A). Mutations...like WT) has a significantly lower thermal stability than WT even in the presence...and structure refinement.) Fig. S1 (Thermal denaturation curves.) Fig. S2 (Electron...

Sam Wright; Minna M. Poranen; Dennis H. Bamford; David I. Stuart; Jonathan M. Grimes

2011-12-28T23:59:59.000Z

229

Reversed Doppler effect in double negative metamaterials  

Science Journals Connector (OSTI)

Doppler shifts in double negative metamaterials have never been observed. This Rapid Communication presents experimental results on Doppler effect in a double negative acoustic metamaterial. We observed that frequency was downshifted when the source was approaching and upshifted when receding. Notably, while in ordinary media wavelengths corresponding to downshifted frequencies are longer, we demonstrate that in double negative metamaterials wavelengths increase as the frequencies increase. Consequently even though the frequencies were downshifted in front of the moving source, the wavelengths became shorter.

Sam Hyeon Lee; Choon Mahn Park; Yong Mun Seo; Chul Koo Kim

2010-06-14T23:59:59.000Z

230

Double perovskite catalysts for oxidative coupling  

DOE Patents [OSTI]

Alkali metal doped double perovskites containing manganese and at least one of cobalt, iron and nickel are useful in the oxidative coupling of alkane to higher hydrocarbons.

Campbell, K.D.

1991-01-01T23:59:59.000Z

231

Review of double beta decay experiments  

E-Print Network [OSTI]

The brief review of current experiments on search and studying of double beta decay processes is done. Best present limits on $\\langle m_{\

A. S. Barabash

2014-03-12T23:59:59.000Z

232

Review of double beta decay experiments  

E-Print Network [OSTI]

The brief review of current experiments on search and studying of double beta decay processes is done. Best present limits on $\\langle m_{\

Barabash, A S

2014-01-01T23:59:59.000Z

233

How does a thermal binary crystal break under shear?  

E-Print Network [OSTI]

When exposed to strong shearing, the particles in a crystal will rearrange and ultimately, the crystal will break by forming large nonaffine defects. Even for the initial stage of this process, only little effort has been devoted to the understanding of the breaking process on the scale of the individual particle size for thermalized mixed crystals. Here, we explore the shear-induced breaking for an equimolar two-dimensional binary model crystal with a high interaction asymmetry between the two different species such that the initial crystal has an intersecting square sublattice of the two constituents. Using Brownian dynamics computer simulations, we show that the combination of shear and thermal fluctuations leads to a characteristic hierarchical breaking scenario where initially, the more strongly coupled particles are thermally distorted, paving the way for the weakly coupled particles to escape from their cage. This in turn leads to mobile defects which may finally merge, proliferating a cascade of defects, which triggers the final breakage of the crystal. This scenario is in marked contrast to the breakage of one-component crystals close to melting. Moreover, we explore the orientational dependence of the initial shear direction relative to the crystal orientation and compare this to the usual melting scenario without shear. Our results are verifiable in real-space experiments of superparamagnetic colloidal mixtures at a pending air-water interface in an external magnetic field where the shear can be induced by an external laser field.

Tobias Horn; Hartmut Löwen

2014-11-21T23:59:59.000Z

234

Vacuum condensates, flavor mixing and spontaneous supersymmetry breaking  

E-Print Network [OSTI]

Spontaneous supersymmetry (SUSY) breaking is revealed in all phenomena in which vacuum condensates are physically relevant. The dynamical breakdown of SUSY is generated by the condensates themselves, which lift the zero point energy. Evidence is presented in the case of the Wess-Zuimino model, and the flavor mixing case is treated in detail.

Antonio Capolupo; Marco Di Mauro

2013-01-05T23:59:59.000Z

235

Dimension-5 operators in a Gauge Mediated Supersymmetry Breaking Model  

E-Print Network [OSTI]

We study the novel features in a model with Gauge Mediated Supersymmetry Breaking. If the messenger fields have positive R-parity, there will be new sources of flavor violations. We show that the dimension-5 operators will be quite important. When dressing these operators by wino-loops, the constraints on them by the present data are given.

Da-Xin Zhang

2004-12-28T23:59:59.000Z

236

Towards breaking temperature equilibrium in multi-component Eulerian schemes  

SciTech Connect (OSTI)

We investigate the effects ofthermal equilibrium on hydrodynamic flows and describe models for breaking the assumption ofa single temperature for a mixture of components in a cell. A computational study comparing pressure-temperature equilibrium simulations of two dimensional implosions with explicit front tracking is described as well as implementation and J-D calculations for non-equilibrium temperature methods.

Grove, John W [Los Alamos National Laboratory; Masser, Thomas [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

237

Aeration Due to Breaking Waves. Part I: Bubble Populations  

Science Journals Connector (OSTI)

The population of bubbles produced by breaking waves in (10 m) winds of up to 12 m s?1 is analyzed using calibrated images from a vertical pencil-beam sonar system placed on the seabed near the Dutch coast. The structure in the images is ...

A. Graham; D. K. Woolf; A. J. Hall

2004-05-01T23:59:59.000Z

238

Comparing Double String Theory Actions  

E-Print Network [OSTI]

Aimed to a deeper comprehension of a manifestly T-dual invariant formulation of string theory, in this paper a detailed comparison between the non-covariant action proposed by Tseytlin and the covariant one proposed by Hull is done. These are obtained by making both the string coordinates and their duals explicitly appear, on the same foot, in the world-sheet action, so "doubling" the string coordinates along the compact dimensions. After a discussion of the nature of the constraints in both the models and the relative quantization, it results that the string coordinates and their duals behave like "non-commuting" phase space type coordinates but their expressions in terms of Fourier modes generate the oscillator algebra of the standard bosonic string formulation. A proof of the equivalence of the two formulations is given. Furthermore, open-string solutions are also discussed.

Luca De Angelis; S. J. Gabriele Gionti; Raffaele Marotta; Franco Pezzella

2013-12-27T23:59:59.000Z

239

Detuning Induced Effects: Symmetry-Breaking Bifurcations in Dynamic Model of One-Mode Laser  

E-Print Network [OSTI]

The concept of broken symmetry is used to study bifurcations of equilibria and dynamical instabilities in dynamic model of one-mode laser (nonresonant complex Lorenz model) on the basis of modified Hopf theory. It is shown that an invariant set of stationary points bifurcates into an invariant torus (doubly-periodic branching solution). Influence of the symmetry breaking on stability of branching solutions is investigated as a function of detuning. The invariant torus is found to be stable under the detuning exceeds its critical value, so that dynamically broken symmetry results in the apprearance of low-frequency Goldstone-type mode. If the detuning then goes downward and pumping is kept above the threshold, numerical analysis reveals that after a cascade of period-doublings the strange Lorenz attractor is formed at small values of detuning. It is found that there are three types of the system behavior as pumping increases depending on the detuning. Quantum counterpart of the complex Lorenz model is discussed.

Alexei D. Kiselev

1998-01-15T23:59:59.000Z

240

Jefferson Lab Science Series - DNA: The Strand That Connects Us All  

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

The Mysterious Universe The Mysterious Universe Previous Video (The Mysterious Universe) Science Series Video Archive Next Video (The Science of Chocolate) The Science of Chocolate DNA: The Strand That Connects Us All Dr. Matt Kaplan - University of Arizona Genetics Core March 29, 2011 Learn how the methods and discoveries of human population genetics are applied for personal genealogical reconstruction and anthropological testing. We will start with a short general review of human genetics and the biology behind this form of DNA testing. We will look at how DNA testing is performed and how samples are processed in our laboratory. We will also examine examples of personal genealogical results from Family Tree DNA and personal anthropological results from the Genographic Project. Finally, I will describe the newest project in our laboratory, the DNA

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


241

Double superexchange in quantum dot mesomaterials  

E-Print Network [OSTI]

as the critical obstacles to dramatic enhancements in the energy conversion efficiency of photovoltaic cells based.7­10 A low binding energy allows excitons to thermally dissociate and charge carriers hop from dot exhibits a double superexchange. In addition to enhancing carrier hopping rates, double superexchange plays

Wu, Zhigang

242

Double beta decay: experiments and theory review  

E-Print Network [OSTI]

Neutrinoless double beta decay is one of the most powerful tools to set the neutrino mass absolute scale and establish whether the neutrino is a Majorana particle. After a summary of the neutrinoless double beta decay phenomenology, the present status of the experimental search for this rare decay is reported and the prospects for next generation experiments are reviewed.

A. Nucciotti

2007-07-15T23:59:59.000Z

243

Self-assembly of hydrogen-bonded supramolecular strands from complementary melamine and barbiturate components with chiral  

E-Print Network [OSTI]

Self-assembly of hydrogen-bonded supramolecular strands from complementary melamine and barbiturate barbiturate 7 result in molecular recognition directed self-assembly in solution and in the solid state containing a dierent triazine enantiomer. Self-assembly takes place in biological systems with a high level

Rusell, K.C.

244

Experimental investigation of small-scale breaking waves : flow visualization across the air-water interface  

E-Print Network [OSTI]

The dynamics of breaking waves significantly affect air-sea fluxes of heat, momentum, mass and energy across the ocean interface. Breaking waves also contribute considerable loading to offshore and coastal structures, and ...

McDonald, Angus Kai

2005-01-01T23:59:59.000Z

245

Navier-Stokes simulations of steep breaking water waves with a coupled air-water interface  

E-Print Network [OSTI]

Wave breaking on the ocean surface significantly facilitates the transfer of mass, momentum, heat and energy across the air-sea interface. In the context of the near field flow about a surface ship, the breaking bow wave ...

Hendrickson, Kelli L

2005-01-01T23:59:59.000Z

246

Quantitative imaging of the air-water flow fields formed by unsteady breaking waves  

E-Print Network [OSTI]

An experimental method for simultaneously measuring the velocity fields on the air and water side of unsteady breaking waves is presented. The method is applied to breaking waves to investigate the physics of the air and ...

Belden, Jesse (Jesse Levi)

2009-01-01T23:59:59.000Z

247

Katz A: Breaking the silence on cancer and sexuality: a handbook for healthcare providers  

Science Journals Connector (OSTI)

Although Breaking the Silence does contain correct factual information about the effects ... the book states that it is a “Handbook for Healthcare Providers” and the back cover...Breaking the Silence clearly spea...

Kelly D. Skinner

2008-06-01T23:59:59.000Z

248

DOE Joint Genome Institute: Breaking down cellulose without blasting  

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

4, 2011 4, 2011 Breaking down cellulose without blasting lignin: "Dry rot" genome offers lessons for biofuel pretreatment WALNUT CREEK, Calif.-Feared by realtors and homeowners alike, dry rot due to the fungus Serpula lacrymans causes millions of dollars worth of damage to homes and buildings around the world. This brown rot fungus' capacity to break down the cellulose in wood led to its selection for sequencing by the U.S. Department of Energy (DOE) Joint Genome Institute (JGI) in 2007, with the goal of identifying the enzymes involved in the degradation process and using the information to improve cellulosic biofuels production. Photo: A variant of Serpula lacrymans causes dry rot. (Dave Brown via Flickr/Creative Commons Attribution 2.0) As reported online July 14 in Science Express, an international team of

249

Breaking the Disk/Halo Degeneracy with Gravitational Lensing  

E-Print Network [OSTI]

The degeneracy between the disk and the dark matter contribution to galaxy rotation curves remains an important uncertainty in our understanding of disk galaxies. Here we discuss a new method for breaking this degeneracy using gravitational lensing by spiral galaxies, and apply this method to the spiral lens B1600+434 as an example. The combined image and lens photometry constraints allow models for B1600+434 with either a nearly singular dark matter halo, or a halo with a sizable core. A maximum disk model is ruled out with high confidence. Further information, such as the circular velocity of this galaxy, will help break the degeneracies. Future studies of spiral galaxy lenses will be able to determine the relative contribution of disk, bulge, and halo to the mass in the inner parts of galaxies.

Ariyeh H. Maller; Luc Simard; Puragra Guhathakurta; Jens Hjorth; Andreas O. Jaunsen; Ricardo A. Flores; Joel R. Primack

1999-10-12T23:59:59.000Z

250

Landscape of Supersymmetry Breaking Vacua in Geometrically Realized Gauge Theories  

E-Print Network [OSTI]

We study vacuum structure of N=1 supersymmetric quiver gauge theories which can be realized geometrically by D brane probes wrapping cycles of local Calabi-Yau three-folds. In particular, we show that the A_2 quiver theory with gauge group U(N_1) \\times U(N_2) with N_1 / 2 landscape of inequivalent meta-stable vacua where supersymmetry is dynamically broken and all the moduli are stabilized. Each vacuum has distinct unbroken gauge symmetry. B-terms generated by the supersymmetry breaking give rise to gaugino masses at one-loop, and we are left with the bosonic pure Yang-Mills theory in the infrared. We also identify the supersymmetric vacua in this model using their infrared free descriptions and show that the decay rates of the supersymmetry breaking vacua into the supersymmetric vacua can be made parametrically small.

Hirosi Ooguri; Yutaka Ookouchi

2006-07-07T23:59:59.000Z

251

Single-Sector Supersymmetry Breaking, Chirality, and Unification  

SciTech Connect (OSTI)

Calculable single-sector models provide an elegant framework for generating the flavor textures via compositeness, breaking supersymmetry, and explaining the electroweak scale. Such models may be realized naturally in supersymmetric QCD with additional gauge singlets (SSQCD), though it remains challenging to construct models without a surfeit of light exotic states where the Standard Model index emerges naturally. We classify possible single-sector models based on Sp confining SSQCD according to their Standard Model index and number of composite messengers. This leads to simple, calculable models that spontaneously break supersymmetry, reproduce the fermion flavor hierarchy, and explain the Standard Model index dynamically with little or no additional matter. At low energies these theories realize a 'more minimal' soft spectrum with direct mediation and a gravitino LSP.

Behbahani, Siavosh R.; /SLAC /Stanford U., Phys. Dept.; Craig, Nathaniel; /Stanford U., Phys. Dept. /Princeton, Inst. Advanced Study /Rutgers U., Piscataway; Torroba, Gonzalo; /SLAC /Stanford U., Phys. Dept.

2011-08-12T23:59:59.000Z

252

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

312 P. Vogel, “Limits From Neutrinoless Double-Beta Decay (Assumptions No detected neutrinoless double ?-decay lightestscale (1 ± 0.05 eV), No neutrinoless double ?-decay lightest

Bahcall, John N.

2009-01-01T23:59:59.000Z

253

A Search for Neutrinoless Double Beta Decay of Te-130  

E-Print Network [OSTI]

Bolometric experiments for neutrinoless double beta 3.2.1A Search for Neutrinoless Double Beta Decay of Te by AdamSpring 2010 A Search for Neutrinoless Double Beta Decay of

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

254

Neutrinoless Double Beta Decay in Light of SNO Salt Data  

E-Print Network [OSTI]

14] P. Vogel, “Limits From Neutrinoless Double-Beta Decay (Higgs, can also cause neutrinoless double-beta decay (seeLBNL-53996 Neutrinoless Double Beta Decay in Light of SNO

Murayama, Hitoshi

2009-01-01T23:59:59.000Z

255

Universality-breaking effects in leptonic Z decays  

Science Journals Connector (OSTI)

We analyze the possibility of universality violation in diagonal leptonic decays of the Z boson, in the context of interfamily ‘‘seesaw’’ models. In a minimal extension of the standard model with right-handed neutrino fields, we find that universality-breaking effects increase quadratically with the heavy Majorana neutrino mass and may be observed in the current experiments at the CERN e+e- collider LEP.

J. Bernabéu; J. G. Körner; A. Pilaftsis; K. Schilcher

1993-10-25T23:59:59.000Z

256

Is Privatization Enough? Finding Performance Breaks for UK Power Plants  

E-Print Network [OSTI]

can be retrofitted. Though for NOx (and particular gas-fired stations) these decrease thermal efficiency as they dial down the combustion temperature to reduce the nitrogen intake from the air (Martin et al., 2007). In the early 1990s National... should be positive for CO2 and SO2 but negative for NOx at least for gas-fired stations. 5 Empirical Model Our model has three main characteristics: the generation technology, efficiency, and the structural breaks in efficiency. As usual...

Triebs, Thomas P.; Pollitt, Michael G.

257

Structural design of double hull tankers  

SciTech Connect (OSTI)

After a brief introduction of structural design procedure for double hull tankers, their design features are firstly highlighted comparing with conventional single hull tankers. Next discussed are recent topics of double hull VLCC (Very Large Crude oil Carrier) including higher tensile steel and strut arrangement in transverse ring frames. Finally ultimate longitudinal strength of hull girder is analyzed through a simplified method under both sagging and hogging conditions. Making use of this result, some considerations are made on structural reliability of double hull VLCC.

Niho, O.; Yanagibayashi, S.; Akashi, T. [Mitsui Engineering and Shipbuilding Co., Ltd., Tokyo (Japan)

1994-12-31T23:59:59.000Z

258

Smectic Order in Double-Twist Cylinders  

E-Print Network [OSTI]

I propose a double-twist texture with local smectic order, which may have been seen in recent experiments. As in the Renn-Lubensky TGB phase, the smectic order is broken only through a lattice of screw dislocations. A melted lattice of screw dislocations can produce a double-twist texture as can an unmelted lattice. In the latter case I show that geometry only allows for certain angles between smectic regions. I discuss the possibility of connecting these double-twist tubes together to form a smectic blue phase.

Randall D. Kamien

1996-11-04T23:59:59.000Z

259

A Study of Stranding of Juvenile Salmon by Ship Wakes Along the Lower Columbia River Using a Before-and-After Design: Before-Phase Results  

SciTech Connect (OSTI)

Ship wakes produced by deep-draft vessels transiting the lower Columbia River have been observed to cause stranding of juvenile salmon. Proposed deepening of the Columbia River navigation channel has raised concerns about the potential impact of the deepening project on juvenile salmon stranding. The Portland District of the U.S. Army Corps of Engineers requested that the Pacific Northwest National Laboratory design and conduct a study to assess stranding impacts that may be associated with channel deepening. The basic study design was a multivariate analysis of covariance of field observations and measurements under a statistical design for a before and after impact comparison. We have summarized field activities and statistical analyses for the ?before? component of the study here. Stranding occurred at all three sampling sites and during all three sampling seasons (Summer 2004, Winter 2005, and Spring 2005), for a total of 46 stranding events during 126 observed vessel passages. The highest occurrence of stranding occurred at Barlow Point, WA, where 53% of the observed events resulted in stranding. Other sites included Sauvie Island, OR (37%) and County Line Park, WA (15%). To develop an appropriate impact assessment model that accounted for relevant covariates, regression analyses were conducted to determine the relationships between stranding probability and other factors. Nineteen independent variables were considered as potential factors affecting the incidence of juvenile salmon stranding, including tidal stage, tidal height, river flow, current velocity, ship type, ship direction, ship condition (loaded/unloaded), ship speed, ship size, and a proxy variable for ship kinetic energy. In addition to the ambient and ship characteristics listed above, site, season, and fish density were also considered. Although no single factor appears as the primary factor for stranding, statistical analyses of the covariates resulted in the following equations: (1) Stranding Probability {approx} Location + Kinetic Energy Proxy + Tidal Height + Salmonid Density + Kinetic energy proxy ? Tidal Height + Tidal Height x Salmonid Density. (2) Stranding Probability {approx} Location + Total Wave Distance + Salmonid Density Index. (3) Log(Total Wave Height) {approx} Ship Block + Tidal Height + Location + Ship Speed. (4) Log(Total Wave Excursion Across the Beach) {approx} Location + Kinetic Energy Proxy + Tidal Height The above equations form the basis for a conceptual model of the factors leading to salmon stranding. The equations also form the basis for an approach for assessing impacts of dredging under the before/after study design.

Pearson, Walter H.; Skalski, J R.; Sobocinski, Kathryn L.; Miller, Martin C.; Johnson, Gary E.; Williams, Greg D.; Southard, John A.; Buchanan, Rebecca A.

2006-02-01T23:59:59.000Z

260

Photo double ionization of ethylene and acetylene near threshold  

E-Print Network [OSTI]

Photo double ionization of ethylene and acetylene nearcomplete measurements of the photo double ionization ofkinetic energy of the photo electrons and the nuclear

Gaire, B.

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

National CHP Roadmap: Doubling Combined Heat and Power Capacity...  

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

National CHP Roadmap: Doubling Combined Heat and Power Capacity in the United States by 2010, March 2001 National CHP Roadmap: Doubling Combined Heat and Power Capacity in the...

262

Photo double ionization of ethylene and acetylene near threshold  

E-Print Network [OSTI]

double ionization of ethylene and acetylene near thresholdphoto double ionization of ethylene (dou- ble CC bond) andsimilar yields of metastable ethylene dications produced by

Gaire, B.

2014-01-01T23:59:59.000Z

263

Molecular Dynamics Study of the Electrical Double Layer at Silver...  

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

Electrical Double Layer at Silver Chloride Electrolyte Interfaces. Molecular Dynamics Study of the Electrical Double Layer at Silver Chloride Electrolyte Interfaces. Abstract:...

264

Search for: "neutrinoless double beta decay" | DOE PAGES  

Office of Scientific and Technical Information (OSTI)

neutrinoless double beta decay" Find + Advanced Search Advanced Search All Fields: "neutrinoless double beta decay" Title: Full Text: Bibliographic Data: Creator Author: Name...

265

Double-Disk Dark Matter  

Science Journals Connector (OSTI)

Abstract Based on observational tests of large scale structure and constraints on halo structure, dark matter is generally taken to be cold and essentially collisionless. On the other hand, given the large number of particles and forces in the visible world, a more complex dark sector could be a reasonable or even likely possibility. This hypothesis leads to testable consequences, perhaps portending the discovery of a rich hidden world neighboring our own. We consider a scenario that readily satisfies current bounds that we call Partially Interacting Dark Matter (PIDM). This scenario contains self-interacting dark matter, but it is not the dominant component. Even if PIDM contains only a fraction of the net dark matter density, comparable to the baryonic fraction, the subdominant component’s interactions can lead to interesting and potentially observable consequences. Our primary focus will be the special case of Double-Disk Dark Matter (DDDM), in which self-interactions allow the dark matter to lose enough energy to lead to dynamics similar to those in the baryonic sector. We explore a simple model in which DDDM can cool efficiently and form a disk within galaxies, and we evaluate some of the possible observational signatures. The most prominent signal of such a scenario could be an enhanced indirect detection signature with a distinctive spatial distribution. Even though subdominant, the enhanced density at the center of the galaxy and possibly throughout the plane of the galaxy (depending on precise alignment) can lead to large boost factors, and could even explain a signature as large as the 130 GeV Fermi line. Such scenarios also predict additional dark radiation degrees of freedom that could soon be detectable and would influence the interpretation of future data, such as that from Planck and from the Gaia satellite. We consider this to be the first step toward exploring a rich array of new possibilities for dark matter dynamics.

JiJi Fan; Andrey Katz; Lisa Randall; Matthew Reece

2013-01-01T23:59:59.000Z

266

Double Beta Decay Constraint on Composite Neutrinos  

Science Journals Connector (OSTI)

......Constraint on Composite Neutrinos Eiichi Takasugi Department of Physics, Osaka University, Toyonaka 560 Neutrinoless double beta decay (betabeta)0v occurs through the magnetic coupling of dimension five operator whose coupling constant is......

Eiichi Takasugi

1997-10-01T23:59:59.000Z

267

Phenomenology of single and double diffraction dissociation  

E-Print Network [OSTI]

Predictions of the gap-probability renormalization model for single and double diffraction dissociation cross sections in proton-proton collisions at the LHC are presented and compared with recent CMS measurements.

Konstantin Goulianos

2013-10-21T23:59:59.000Z

268

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

Gómez-Cadenas, J J

2015-01-01T23:59:59.000Z

269

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

J. J. Gómez-Cadenas; Justo Martín-Albo

2015-02-02T23:59:59.000Z

270

Double Pomeron Physics at the LHC  

E-Print Network [OSTI]

I discuss central exclusive production, otherwise known as Double Pomeron Exchange, DPE, from the ISR through the Tevatron to the LHC. There I emphasize the interest of exclusive Higgs and WW/ZZ production.

Michael G. Albrow

2005-07-25T23:59:59.000Z

271

Neutrinoless double beta decay with scalar bilinears  

E-Print Network [OSTI]

One possible probe to physics beyond the standard model is to look for scalar bilinears, which couple to two fermions of the standard model. We point out that the scalar bilinears allow new diagrams contributing to the neutrinoless double beta decay. The upper bound on the neutrinoless double beta decay lifetime would then give new constraints on the ratio of the masses of these scalars to their couplings to the fermions.

H. V. Klapdor-Kleingrothaus; U. Sarkar

2002-11-18T23:59:59.000Z

272

Wavelength-doubling optical parametric oscillator  

DOE Patents [OSTI]

A wavelength-doubling optical parametric oscillator (OPO) comprising a type II nonlinear optical medium for generating a pair of degenerate waves at twice a pump wavelength and a plurality of mirrors for rotating the polarization of one wave by 90 degrees to produce a wavelength-doubled beam with an increased output energy by coupling both of the degenerate waves out of the OPO cavity through the same output coupler following polarization rotation of one of the degenerate waves.

Armstrong, Darrell J. (Albuquerque, NM); Smith, Arlee V. (Albuquerque, NM)

2007-07-24T23:59:59.000Z

273

Double shell tank waste analysis plan  

SciTech Connect (OSTI)

Waste analysis plan for the double shell tanks. SD-WM-EV-053 is Superseding SD-WM-EV-057.This document provides the plan for obtaining information needed for the safe waste handling and storage of waste in the Double Shell Tank Systems. In Particular it addresses analysis necessary to manage waste according to Washington Administrative Code 173-303 and Title 40, parts 264 and 265 of the Code of Federal Regulations.

Mulkey, C.H.; Jones, J.M.

1994-12-15T23:59:59.000Z

274

HIV-1 integrase strand-transfer inhibitors: Design, synthesis and molecular modeling investigation  

Science Journals Connector (OSTI)

This study is focused on a new series of benzylindole derivatives with various substituents at the benzene-fused ring, suggested by our 3D pharmacophore model developed for HIV-1 integrase inhibitors (INIs). All synthesized compounds proved to be active in the nanomolar range (6–35 nM) on the strand-transfer step (ST). In particular, derivative 4-[1-(4-fluorobenzyl)-5,7-dimethoxy-1H-indol-3-yl]-2-hydroxy-4-oxobut-2-enoic acid (8e), presenting the highest best-fit value on pharmacophore model, showed a potency comparable to that of clinical \\{INSTIs\\} GS 9137 (1) and MK-0518 (2). The binding mode of our molecules has been investigated using the recently published crystal structure of the complex of full-length integrase from the prototype foamy virus in complex with its cognate DNA (PFV-IN/DNA). The results highlighted the ability of derivative 8e to assume the same binding mode of MK-0518 and GS 9137.

Laura De Luca; Sara De Grazia; Stefania Ferro; Rosaria Gitto; Frauke Christ; Zeger Debyser; Alba Chimirri

2011-01-01T23:59:59.000Z

275

4 Transformation of Yeast by the Lithium Acetate/Single-Stranded Carrier DNA/PEG Method  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses the transformation of yeast by the lithium acetate/single-stranded carrier DNA/PEG (LiAc/SSDNA/PEG) method. High efficiency transformation of yeast is used most frequently for applications such as the two-hybrid screen for protein-protein interactions, for one-hybrid screens that detect protein–DNA interactions, for inverted one-hybrid screens to identify DNA elements that bind a transcription factor, and for the screens that detect protein–protein interactions dependent on phosphorylation. The high efficiency LiAc/SSDNA/PEG transformation procedure used to induce the yeast, Sacchuromyces cerevisiae, to take up exogenous DNA has aided in the development and utilization of sophisticated technologies, such as the one, two, and inverted one-hybrid systems. Also, the procedure is important for the efficient construction of libraries of null mutants for the functional analysis of novel yeast genes. These and other molecular genetic techniques have increased the usefulness of this premier eukaryotic model organism so that it can now be considered as a laboratory work horse, which will find its way into many research programs.

R. Daniel Gietz; Robin A. Woods

1998-01-01T23:59:59.000Z

276

Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Page 1 Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks  

E-Print Network [OSTI]

Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Page 1 Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Heidi Borchers University of New Hampshire, Environmental Ultraviolet (UV) lamps generate ultraviolet light through the vaporization of elemental mercury, by using

277

Z(4) model: Criticality and break-collapse method  

Science Journals Connector (OSTI)

Within a real-space renormalization-group (RG) framework, we study the criticality of the Z(4) ferromagnet on the square lattice. The phase diagram (exhibiting ferromagnetic, paramagnetic, and nematiclike phase) recovers all the available exact results, and possibly is of high precision everywhere. In particular, we establish the main asymptotic behaviors (bifurcation and Ising regions). In addition, we develop an operational procedure (break-collapse method) which considerably simplifies the exact calculation of arbitrary Z(4) two-terminal clusters (commonly appearing in RG approaches).

Ananias M. Mariz; Constantino Tsallis; Paulo Fulco

1985-11-01T23:59:59.000Z

278

CMB Anisotropies from Outflows in Lyman Break Galaxies  

E-Print Network [OSTI]

Thomson scattering of the Cosmic Microwave Background (CMB) on moving electrons in the outflows of Lyman Break Galaxies (LBGs) at redshifts 2-8 contributes to the small-scale CMB anisotropies. The net effect produced by each outflow depends on its level of deviation from spherical symmetry, caused either by an anisotropic energy injection from the nuclear starburst or quasar activity, or by an inhomogeneous intergalactic environment. We find that for plausible outflow parameters consistent with spectroscopic observations of LBGs, the induced CMB anisotropies on arcminute scales reach up to $\\sim 1 \\mu$K, comparable to the level produced during the epoch of reionization.

Daniel Babich; Abraham Loeb

2006-09-14T23:59:59.000Z

279

CPT- and Lorentz-symmetry breaking: a review  

E-Print Network [OSTI]

The breakdown of spacetime symmetries has recently been identified as a promising candidate signal for underlying physics, possibly arising through quantum-gravitational effects. This talk gives an overview over various aspects of CPT- and Lorentz-violation research. Particular emphasis is given to the interplay between CPT, Lorentz, and translation symmetry, mechanisms for CPT and Lorentz breaking, and the construction of a low-energy quantum-field description of such effect. This quantum field framework, called the SME, is employed to determine possible phenomenological consequences of CPT and Lorentz violation for neutral-meson interferometry.

Ralf Lehnert

2006-12-28T23:59:59.000Z

280

Spontaneous symmetry breaking and optimization of functional renormalization group  

E-Print Network [OSTI]

The requirement for the absence of spontaneous symmetry breaking in the d=1 dimension has been used to optimize the regulator dependence of functional renormalization group equations in the framework of the sine-Gordon scalar field theory. Results obtained by the optimization of this kind were compared to those of the Litim-Pawlowski and the principle of minimal sensitivity optimization scenarios. The optimal parameters of the compactly supported smooth (CSS) regulator, which recovers all major types of regulators in appropriate limits, have been determined beyond the local potential approximation, and the Litim limit of the CSS was found to be the optimal choice.

I. Nandori; I. G. Marian; V. Bacso

2014-02-27T23:59:59.000Z

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


281

Computer code for double beta decay QRPA based calculations  

E-Print Network [OSTI]

. The Enriched Xenon Observatory for neutrinoless double beta decay (EXO) will search for the rare decays

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

282

An analysis of tissues for total PCB and planar PCB concentrations in marine mammals stranded along the Gulf of Mexico  

E-Print Network [OSTI]

INTRODUCTION LITERATURE REVIEW Page v1 V111 1X Polychlorinated Biphenyls Transportation and Dispersal Planar PCB Congeners Bioaccumulation Marine Mammals as Bioindicators Recent Marine Mammal Mass Mortalities Considerations for Analyzing Stranded... comparison of the levels of PCBs containing 8, 9, and 10 chlorine atoms in the blubber of mature and immature female Tursiops truncatus 64 X LIST OF FIGURES (continued) Figure F age 14 A comparison of the levels of PCBs containing 4, 5, and 6 chlorine...

Davis, Joseph W.

2012-06-07T23:59:59.000Z

283

PM2 DNA, Forms I and I: a quantitative comparison of strand breakage induced by ionizing radiation  

E-Print Network [OSTI]

of Advisory Committee: Dr R. D. Neff A quantitative comparison of strand breakage production rates, induced by 250 kvP X-rays, was examined for PM2 DNA, Form I and Form I . Assay of the irrad. iated DNA samples was 0 accomplished by tube gel... AND METHODS DNA Preparation Radiation Protocol Azarose 1 Buffer ~garose Gels Tube Gel Electrophoresis Spectrofluorometry with Electronic Quantif'ication RESULTS DISCUSSION AND CONCLUSION REFERENCES APPENDIX 1 APPENDIX 2 VITA ~Pa e ~ 22 22 24...

Myers, Peter Hall

1981-01-01T23:59:59.000Z

284

Fabrication and test of 4m long Nb3Sn quadrupole coil made of RRP-114-127 strand  

SciTech Connect (OSTI)

Fermilab is collaborating with LBNL and BNL (US-LARP collaboration) to develop a large-aperture Nb{sub 3}Sn superconducting quadrupole for the Large Hadron Collider (LHC) luminosity upgrade. Several two-layer quadrupole models of the 1-meter and 3.4-meter length with 90mm apertures have been fabricated and tested by the US-LARP collaboration. High-Jc RRP-54/61 strand was used for nearly all models. Large flux jumps typical for this strand due to the large sub-element diameter limited magnet quench performance at temperatures below 2.5-3K. This paper summarizes the fabrication and test by Fermilab of LQM01, a long quadrupole coil test structure (quadrupole mirror) with the first 3.4m quadrupole coil made of more stable RRP-114/127 strand. The coil and structure are fully instrumented with voltage taps, full bridge strain gauges and strip heaters to monitor preload, thermal properties and quench behavior. Measurements during fabrication are reported, including preload during the yoke welding process. Testing is done at 4.5K, 1.9K and a range of intermediate temperatures. The test results include magnet strain and quench performance during training, as well as quench studies of current ramp rate and temperature dependence from 1.9K to 4.5K.

Bossert, R.; Ambrosio, G.; Andreev, N.; Barzi, E.; Chlachidze, G.; Kashikhin, V.V.; Lamm, M.; Nobrega, A.; Novitski, I.; Orris, D.; Tartaglia, M.; /Fermilab

2011-06-01T23:59:59.000Z

285

Solid-state NMR analysis of the {beta}-strand orientation of the protofibrils of amyloid {beta}-protein  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer The supramolecular structure of A{beta}42 protofibrils was analyzed by solid-state NMR. Black-Right-Pointing-Pointer The Ala-21 residue in the A{beta}42 protofibrils is included in a slightly disordered {beta}-strand. Black-Right-Pointing-Pointer The A{beta}42 protofibrils do not form intermolecular in-register parallel {beta}-sheets. -- Abstract: Alzheimer's disease (AD) is caused by abnormal deposition (fibrillation) of a 42-residue amyloid {beta}-protein (A{beta}42) in the brain. During the process of fibrillation, the A{beta}42 takes the form of protofibrils with strong neurotoxicity, and is thus believed to play a crucial role in the pathogenesis of AD. To elucidate the supramolecular structure of the A{beta}42 protofibrils, the intermolecular proximity of the Ala-21 residues in the A{beta}42 protofibrils was analyzed by {sup 13}C-{sup 13}C rotational resonance experiments in the solid state. Unlike the A{beta}42 fibrils, an intermolecular {sup 13}C-{sup 13}C correlation was not found in the A{beta}42 protofibrils. This result suggests that the {beta}-strands of the A{beta}42 protofibrils are not in an in-register parallel orientation. A{beta}42 monomers would assemble to form protofibrils with the {beta}-strand conformation, then transform into fibrils by forming intermolecular parallel {beta}-sheets.

Doi, Takashi [Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan)] [Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan); Masuda, Yuichi, E-mail: masuda@mail.pharm.tohoku.ac.jp [Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan) [Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan); Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578 (Japan); Irie, Kazuhiro [Graduate School of Agriculture, Kyoto University, Kyoto 606-8502 (Japan)] [Graduate School of Agriculture, Kyoto University, Kyoto 606-8502 (Japan); Akagi, Ken-ichi; Monobe, Youko; Imazawa, Takayoshi [Section of Laboratory Equipment, Division of Biomedical Research, National Institute of Biomedical Innovation, Osaka 567-0085 (Japan)] [Section of Laboratory Equipment, Division of Biomedical Research, National Institute of Biomedical Innovation, Osaka 567-0085 (Japan); Takegoshi, K. [Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan)] [Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan)

2012-11-30T23:59:59.000Z

286

Shelf?break tidally induced environmental influences on acoustic propagation  

Science Journals Connector (OSTI)

Continuous wave propagation in the 100–500 Hz band in littoral regions depends upon both time?dependent oceanography and bathymetry. The environmental influences interact nonlinearly in the acoustical time variation especially since the diurnal tidesurface height changes creates time?dependent total water depth. A submesoscale hydrodynamic model developed by Shen and Evans is used with tidal forcing and a simple shelf?break bathymetry to produce surface height variation and internal wave activity due to internal tide in a stratified ocean environment. A three?dimensional parabolic equation acoustic model is used to acoustically probe this environment at various bearings relative to the shelf break and the resulting internal tidal dynamics. In particular the acoustical results are examined for three?dimensional effects such as horizontal refraction. First the influence of bathymetry alone is shown and then compared to the full environment due to hydrodynamic action. The relative influences will then be compared by various measures such as modal decomposition acoustic energy summed over depth and signal gain degradation. [This research is sponsored by the ONR.

2004-01-01T23:59:59.000Z

287

Flavour symmetry breaking in the kaon parton distribution amplitude  

E-Print Network [OSTI]

We compute the kaon's valence-quark (twist-two parton) distribution amplitude (PDA) by projecting its Poincare'-covariant Bethe-Salpeter wave-function onto the light-front. At a scale \\zeta=2GeV, the PDA is a broad, concave and asymmetric function, whose peak is shifted 12-16% away from its position in QCD's conformal limit. These features are a clear expression of SU(3)-flavour-symmetry breaking. They show that the heavier quark in the kaon carries more of the bound-state's momentum than the lighter quark and also that emergent phenomena in QCD modulate the magnitude of flavour-symmetry breaking: it is markedly smaller than one might expect based on the difference between light-quark current masses. Our results add to a body of evidence which indicates that at any energy scale accessible with existing or foreseeable facilities, a reliable guide to the interpretation of experiment requires the use of such nonperturbatively broadened PDAs in leading-order, leading-twist formulae for hard exclusive processes instead of the asymptotic PDA associated with QCD's conformal limit. We illustrate this via the ratio of kaon and pion electromagnetic form factors: using our nonperturbative PDAs in the appropriate formulae, $F_K/F_\\pi=1.23$ at spacelike-$Q^2=17\\,{\\rm GeV}^2$, which compares satisfactorily with the value of $0.92(5)$ inferred in $e^+ e^-$ annihilation at $s=17\\,{\\rm GeV}^2$.

Chao Shi; Lei Chang; Craig D. Roberts; Sebastian M. Schmidt; Peter C. Tandy; Hong-Shi Zong

2014-06-12T23:59:59.000Z

288

Ensuring Productive Resolution by the Junction-Resolving Enzyme RuvC: Large Enhancement of the Second-Strand Cleavage Rate  

Science Journals Connector (OSTI)

Table 1:? Rates of Cleavage of Synthetic DNA Junctions by RuvCa ... Table 2:? Rates of Cleavage by RuvC of Synthetic DNA Junctions Containing Oligoadenine Bulges at the Point of Strand Exchangea ...

Jonathan M. Fogg; David M. J. Lilley

2000-12-01T23:59:59.000Z

289

C4-Dicarboxylic acid metabolism in bundle-sheath chloroplasts, mitochondria and strands of Eriochloa borumensis Hack., a phosphoenolpyruvate-carboxykinase type C4 species  

Science Journals Connector (OSTI)

C4-acid metabolism by isolated bundlesheath chloroplasts, mitochondria and strands of Eriochloa borumensis Hack., a phosphoennolpyruvate-carboxykinase (PEP-CK)...4Cl. There was very little conversion of PEP to py...

C. K. M. Rathnam; G. E. Edwards

290

Effect of nanoclay on some applied properties of oriented strand board (OSB) made from underutilized low quality paulownia (Paulownia fortunei) wood  

Science Journals Connector (OSTI)

In this study, the effect of nanoclay on some applied properties of oriented strand ... of European Norm. With increasing 5 % nanoclay to UF resin, mechanical and physical properties ... electron microscope analy...

Ayoub Salari; Taghi Tabarsa; Abolghasem Khazaeian…

2012-12-01T23:59:59.000Z

291

Precision Muon Reconstruction in Double Chooz  

E-Print Network [OSTI]

We describe a muon track reconstruction algorithm for the reactor anti-neutrino experiment Double Chooz. The Double Chooz detector consists of two optically isolated volumes of liquid scintillator viewed by PMTs, and an Outer Veto above these made of crossed scintillator strips. Muons are reconstructed by their Outer Veto hit positions along with timing information from the other two detector volumes. All muons are fit under the hypothesis that they are through-going and ultrarelativistic. If the energy depositions suggest that the muon may have stopped, the reconstruction fits also for this hypothesis and chooses between the two via the relative goodness-of-fit. In the ideal case of a through-going muon intersecting the center of the detector, the resolution is ~40 mm in each transverse dimension. High quality muon reconstruction is an important tool for reducing the impact of the cosmogenic isotope background in Double Chooz.

Abe, Y; Barriere, J C; Baussan, E; Bekman, I; Bergevin, M; Bezerra, T J C; Bezrukov, L; Blucher, E; Buck, C; Busenitz, J; Cabrera, A; Caden, E; Camilleri, L; Carr, R; Cerrada, M; Chang, P -J; Chauveau, E; Chimenti, P; Collin, A P; Conover, E; Conrad, J M; Crespo-Anadón, J I; Crum, K; Cucoanes, A; Damon, E; Dawson, J V; Dietrich, D; Djurcic, Z; Dracos, M; Elnimr, M; Etenko, A; Fallot, M; von Feilitzsch, F; Felde, J; Fernandes, S M; Fischer, V; Franco, D; Franke, M; Furuta, H; Gil-Botella, I; Giot, L; Göger-Neff, M; Gonzalez, L F G; Goodenough, L; Goodman, M C; Grant, C; Haag, N; Hara, T; Haser, J; Hofmann, M; Horton-Smith, G A; Hourlier, A; Ishitsuka, M; Jochum, J; Jollet, C; Kaether, F; Kalousis, L N; Kamyshkov, Y; Kaplan, D M; Kawasaki, T; Kemp, E; de Kerret, H; Kryn, D; Kuze, M; Lachenmaier, T; Lane, C E; Lasserre, T; Letourneau, A; Lhuillier, D; Lima, H P; Lindner, M; no, J M López-Casta; LoSecco, J M; Lubsandorzhiev, B; Lucht, S; Maeda, J; Mariani, C; Maricic, J; Martino, J; Matsubara, T; Mention, G; Meregaglia, A; Miletic, T; Milincic, R; Minotti, A; Nagasaka, Y; Nikitenko, Y; Novella, P; Obolensky, M; Oberauer, L; Onillon, A; Osborn, A; Palomares, C; Pepe, I M; Perasso, S; Pfahler, P; Porta, A; Pronost, G; Reichenbacher, J; Reinhold, B; Röhling, M; Roncin, R; Roth, S; Rybolt, B; Sakamoto, Y; Santorelli, R; Schilithz, A C; Schönert, S; Schoppmann, S; Shaevitz, M H; Sharankova, R; Shimojima, S; Sibille, V; Sinev, V; Skorokhvatov, M; Smith, E; Spitz, J; Stahl, A; Stancu, I; Stokes, L F F; Strait, M; Stüken, A; Suekane, F; Sukhotin, S; Sumiyoshi, T; Sun, Y; Svoboda, R; Terao, K; Tonazzo, A; Thi, H H Trinh; Valdiviesso, G; Vassilopoulos, N; Veyssiere, C; Vivier, M; Wagner, S; Watanabe, H; Wiebusch, C; Winslow, L; Wurm, M; Yang, G; Yermia, F; Zimmer, V

2014-01-01T23:59:59.000Z

292

The double-arm barn door tracker  

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

How to build a double-arm barn door tracker How to build a double-arm barn door tracker | Jefferson Lab Home Page | Science Education Home Page | Construction Notes/Photos Page | Sources: Sky & Telescope April 1989 (p436 - p441) [very good] Sky & Telescope February 1988 (p213 - p214) Original concept by Dave Trott A single-arm barn door tracker, driven by a straight screw, accumulates tangent error as time passes. Most of this error can be eliminated by adding a second hinged arm to the standard arrangement. There are four types of double-arm trackers, each with a different geometry. A comparison of accumulated error (in arc seconds) and construction parameters is given below: Error Chart [Apparently Type 1 is very bad and not worth constructing?? The two Type 4 drives vary in beta. This results in shifting the region of maximum error

293

CSNI specialist meeting on leak-before-break in nuclear reactor piping: proceedings  

SciTech Connect (OSTI)

On September 1 and 2, 1983, the CSNI subcommittee on primary system integrity held a special meeting in Monterey, California, on the subject of leak-before-break in nuclear reactor piping systems. The purpose of the meeting was to provide an international forum for the exchange of ideas, positions, and research results; to identify areas requiring additional research and development; and to determine the general attitude toward acceptance of the leak-before-break concept. The importance of the leak-before-break issue was evidenced by excellent attendance at the meeting and through active participation by the meeting attendees. Approximately 125 people representing fifteen different nations attended the meeting. The meeting was divided into four technical sessions addressing the following areas: Application of Piping Fracture Mechanics to Leak-Before Break, Leak Rate and Leak Detection, Leak-Before-Break Studies, Methods and Results, Current and Proposed Positions on Leak-Before-Break.

Not Available

1984-08-01T23:59:59.000Z

294

ON THE EVOLUTION OF THE SPECTRAL BREAK IN THE AFTERGLOW OF GAMMA-RAY BURSTS  

SciTech Connect (OSTI)

The temporal evolution of the spectral break in the time-resolved spectral energy density of the broadband afterglow of gamma-ray bursts (GRBs) 091127 and 080319B was shown recently to be inconsistent with that expected for the cooling break in the standard fireball model of GRBs. Here we show that it is, however, in good agreement with the predicted temporal evolution of the smooth injection break/bend in the cannonball model of GRBs.

Dado, Shlomo; Dar, Arnon [Physics Department, Technion, Haifa 32000 (Israel)

2012-02-20T23:59:59.000Z

295

On the neutrinoless double ?{sup +}/EC decays  

SciTech Connect (OSTI)

The neutrinoless double positron-emission/electron-capture (0??{sup +}/EC) decays are studied for the magnitudes of the involved nuclear matrix elements (NMEs). Decays to the ground state, 0{sub gs}{sup +}, and excited 0{sup +} states are discussed. The participant many-body wave functions are evaluated in the framework of the quasiparticle random-phase approximation (QRPA). Effective, G-matrix-derived nuclear forces are used in realistic single-particle model spaces. The channels ?{sup +}?{sup +}, ?{sup +}EC, and the resonant neutrinoless double electron capture (R0?ECEC) are discussed.

Suhonen, Jouni [Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä (Finland)

2013-12-30T23:59:59.000Z

296

Metallic glass could make your next cell phone harder to break  

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

Metallic glass could make your next cell phone harder to break Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:January 2015 All Issues submit...

297

Metallic glass could make your next cell phone harder to break  

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

April 2014 Metallic glass could make your next cell phone harder to break Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest...

298

Bubbles Help Break Energy Storage Record for Lithium Air-Batteries  

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

Bubbles Help Break Energy Storage Record for Lithium Air-Batteries Foam-base graphene keeps oxygen flowing in batteries that holds promise for electric vehicles January...

299

Planetary Wave Breaking and Nonlinear Reflection: Seasonal Cycle and Interannual Variability  

E-Print Network [OSTI]

and L. M. Polvani, 2000: Climatology of intrusions into theM. H. Hitchman, 1999: A climatology of Rossby wave breaking

Abatzoglou, John T; Magnusdottir, Gudrun

2006-01-01T23:59:59.000Z

300

When Size Matters: Yttrium Oxide Breaking Down Under Pressure | Advanced  

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

Breakthrough in Nanocrystals' Growth Breakthrough in Nanocrystals' Growth Next Step to Drought-Resistant Plants? A Boring Material "Stretched" Could Lead to an Electronics Revolution At the Crossroads of Chromosomes Unveiling the Structure of Adenovirus Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed When Size Matters: Yttrium Oxide Breaking Down Under Pressure NOVEMBER 2, 2010 Bookmark and Share Top: Pair distribution function (PDF) of 16 nm-sized Y2O3 at high pressures. Bottom: Lin Wang (left) and Wenge Yang (right) of the Carnegie Institution of Washington shown with the diamond anvil cell and x-ray instrumentation used to probe the PDF of the sample at high applied

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


301

Breaking Records in Neurological Microradiology | Advanced Photon Source  

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

Exposing Valence-Bond Model Inadequacies Exposing Valence-Bond Model Inadequacies Plants' Rapid Response System Revealed Rewriting the Organofluorine Playbook Computer-Designed Proteins to Disarm a Variety of Flu Viruses Driving Membrane Curvature Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Breaking Records in Neurological Microradiology AUGUST 9, 2012 Bookmark and Share A dense neuron cluster including details of cells in deeper tissue layers. As neuroscientists probe ever deeper into the mysteries of the brain and nervous system, they need ever sharper vision. A group of researchers has developed some exciting new techniques for imaging neuronal and synaptic networks using the hard synchrotron x-rays

302

LANL breaks ground on key sediment control project  

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

Sediment control project Sediment control project LANL breaks ground on key sediment control project Called "grade-control" structures, the approximately $2 million features are up to eight feet high and made of rocks packed tightly into wire enclosures. November 5, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

303

Domain Walls and Vortices in Chiral Symmetry Breaking  

E-Print Network [OSTI]

We study domain walls and vortices in chiral symmetry breaking in a QCD-like theory with N flavors in the chiral limit. If the axial anomaly is absent, there exist stable Abelian axial vortices winding around the spontaneously broken U(1)_A symmetry and non-Abelian axial vortices winding around both the U(1)_A and non-Abelian SU(N) chiral symmetries. In the presence of the axial anomaly term, metastable domain walls are present and Abelian axial vortices must be attached by N domain walls, forming domain wall junctions. We show that a domain wall junction decays into N non-Abelian vortices attached by domain walls, implying its metastability. We also show that domain walls decay through the quantum tunneling by creating a hole bounded by a closed non-Abelian vortex.

Minoru Eto; Yuji Hirono; Muneto Nitta

2013-09-18T23:59:59.000Z

304

Embedded defects and symmetry breaking in flipped SU(5)  

Science Journals Connector (OSTI)

We explicitly show the analogy between the symmetry-breaking scheme for the GUT flipped SU(5) with that of the Weinberg-Salam theory of electroweak interactions. This allows us to construct the embedded defect spectrum of the flipped SU(5) theory. We find that the spectrum consists of twelve gauge-equivalent unstable leptoquark strings, which are analogous to W strings in electroweak theory, and another string that is gauge inequivalent to the leptoquark strings which we call the ‘‘V string.’’ The V string is analogous to the Z string of electroweak theory, correspondingly admitting a stable semilocal limit. Using data on the running coupling constants we indicate that in the nonsupersymmetric case V strings can be stable for part of the physically viable parameter space. Cosmological consequences are briefly discussed. © 1995 The American Physical Society.

Anne-Christine Davis and Nathan F. Lepora

1995-12-15T23:59:59.000Z

305

Are There Local Analogs of Lyman Break Galaxies?  

E-Print Network [OSTI]

To make direct comparisons in the rest-far-ultraviolet between LBGs at z~3 and more local star-forming galaxies, we use HST/STIS to image a set of 12 nearby (z<0.05) HII galaxies in the FUV and a set of 14 luminous compact blue galaxies (LCBGs) at moderate redshift (z~0.5) in the NUV, corresponding to the rest-FUV. We then subject both sets of galaxy images and those of LBGs at z~3 to the same morphological and structural analysis. We find many qualitative and quantitative similarities between the rest-FUV characteristics of distant LBGs and of the more nearby starburst samples, including general morphologies, sizes, asymmetries, and concentrations. Along with some kinematic similarities, this implies that nearby HII galaxies and LCBGs may be reasonable local analogs of distant Lyman break galaxies.

James D. Lowenthal; R. Nick Durham; Brian J. Lyons; Matthew A. Bershady; Jesus Gallego; Rafael Guzman; David C. Koo

2005-02-14T23:59:59.000Z

306

A Microscopic Double-Slit Experiment  

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

A Microscopic Double-Slit A Microscopic Double-Slit Experiment A Microscopic Double-Slit Experiment Print Wednesday, 29 February 2012 00:00 Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using particles instead of light, the experiment played a crucial role in establishing the validity of wave-particle duality, a puzzling concept that has ultimately become central to the interpretation of complementarity in quantum mechnanics. In a new twist on this classic experiment, the double slit (with light waves) has been replaced by a diatomic molecule (with electron waves). At ALS Beamline 10.0.1, researchers have shown that diatomic molecules can serve as two-center emitters of electron waves and that traces of electron-wave interference can be directly observed in precise measurements of vibrationally resolved photoionization spectra.

307

Parameterized Algorithms for Double Hypergraph Dualization with  

E-Print Network [OSTI]

as Sperner families.) The support of a hypergraph is the set of all vertices covered by edges, the remaining sets in graphs are also known as vertex covers. We consider the following two operators on hypergraphsParameterized Algorithms for Double Hypergraph Dualization with Rank Limitation and Maximum Minimal

Damaschke, Peter

308

Double tracks test site characterization report  

SciTech Connect (OSTI)

This report presents the results of site characterization activities performed at the Double Tracks Test Site, located on Range 71 North, of the Nellis Air Force Range (NAFR) in southern Nevada. Site characterization activities included reviewing historical data from the Double Tracks experiment, previous site investigation efforts, and recent site characterization data. The most recent site characterization activities were conducted in support of an interim corrective action to remediate the Double Tracks Test Site to an acceptable risk to human health and the environment. Site characterization was performed using a phased approach. First, previously collected data and historical records sere compiled and reviewed. Generalized scopes of work were then prepared to fill known data gaps. Field activities were conducted and the collected data were then reviewed to determine whether data gaps were filled and whether other areas needed to be investigated. Additional field efforts were then conducted, as required, to adequately characterize the site. Characterization of the Double Tracks Test Site was conducted in accordance with the US Department of Energy`s (DOE) Streamlined Approach for Environmental Restoration (SAFER).

NONE

1996-05-01T23:59:59.000Z

309

Apparent Double SiO Maser Sources  

Science Journals Connector (OSTI)

......to 3 Jy with four 20-m antennas (Miyoshi 1998, a poster paper at JAS meeting). The double SiO sources found...Research (C) (No. 10640238) of the Ministry of Education, Science, Sports and Culture. One of authors (SD) received......

Shuji Deguchi; Takahiro Fujii; Hideyuki Izumiura; Shigeru Matsumoto; Yoshikazu Nakada; Peter R. Wood; Issei Yamamura

1999-06-01T23:59:59.000Z

310

Fatigue analysis for double hull VLCC  

SciTech Connect (OSTI)

This paper presents the procedure and the results of fatigue analysis forming a part of Dynamic Load Approach (DLA) applied for 280,000 DWT double hull VLCC, classed with DLA notation by American Bureau of Shipping. The spectral fatigue analysis is applied to the above vessel, and the fatigue strength is confirmed to be sufficient.

Kawachi, S.; Kushima, T.; Negayama, H.; Shigematsu, K. [Sumitomo Heavy Industries, Ltd., Yokosuka (Japan)

1994-12-31T23:59:59.000Z

311

Pion double charge exchange and hadron dynamics  

SciTech Connect (OSTI)

This paper will review theoretical results to show how pion double charge exchange is contributing to our understanding of hadron dynamics in nuclei. The exploitation of the nucleus as a filter is shown to be essential in facilitating the comparison between theory and experiment. 23 refs., 3 figs., 2 tabs.

Johnson, M.B.

1991-01-01T23:59:59.000Z

312

Neutrinoless Double $?$-Decay: Status and Future  

E-Print Network [OSTI]

A brief summary of the status of neutrino masses, mixing and oscillations is presented. Neutrinoless double $\\beta$-decay is considered. Predictions for the effective Majorana mass are reviewed. A possible test of the calculations of nuclear matrix elements of the $0\

S. M. Bilenky

2005-09-11T23:59:59.000Z

313

Double Tracks revegetation and monitoring plan  

SciTech Connect (OSTI)

This document is a reclamation plan for short-term and long-term stabilization of land disturbed by activities associated with interim clean-up of radionuclide-contaminated surface soil at the Double Tracks site. This document has been prepared to provide general reclamation practices and procedures that will be followed during restoration of the cleanup site. Reclamation demonstration plots were established near the site in the fall of 1994 to evaluate the performance of several native species and to evaluate different irrigation strategies. Results of the study at Double Tracks, as well as the results from numerous studies conducted at other sites (Area 11 and Area 19 of the Nevada Test Site), have been summarized and incorporated into this final reclamation plan for the interim cleanup of the Double Tracks site, located northwest of the Nevada Test Site on the Nellis Air Force Range. Surface soils at Double Tracks were contaminated as a result of the detonation of a device containing plutonium and depleted uranium using chemical explosives. The total amount of Pu deposited on the site was between 980 and 1,600 grams and was scattered downwind south of the detonation site. Short-term stabilization consists of the application of a chemical soil stabilizer that is applied immediately following excavation of the contaminated soils to minimize Pu resuspension. Long-term stabilization is accomplished by the establishment of a permanent vegetation.

NONE

1997-07-01T23:59:59.000Z

314

Neutrinoless Double Beta Decay and ??Mass Determination  

Science Journals Connector (OSTI)

The search for Neutrinoless Double Beta Decay could improve our knowledge on neutrino properties. After a brief discussion on the implications of the observation of this rare process I will introduce the experimental approaches and review the prospects of the search for this nuclear transition.

M. Pedretti

2005-01-01T23:59:59.000Z

315

Low Dose Radiation Research Program: Quantification of Repair of  

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

Quantification of Repair of Low-Dose-Induced DNA Double-Strand Quantification of Repair of Low-Dose-Induced DNA Double-Strand Breaks in Diploid Human Cells Authors: David Schild,1 and Larry H. Thompson,2 Institutions: 1Life Sciences Division, Lawrence Berkeley National Laboratory; and 2BBR Program, Lawrence Livermore National Laboratory Double-strand breaks (DSBs) are the biochemical lesions of primary concern in radiation related health effects. Compelling evidence from rodent and chicken model systems indicates that homologous recombinational repair (HRR) plays an essential role for cell viability in the repair of spontaneous DSBs arising during DNA replication and an important role in the repair of IR-induced DSBs. IR-induced DSBs are also repaired by error-prone nonhomologous end joining (NHEJ). Using hTERT-immortalized

316

Design Considerations for Monopile Founded Offshore Wind Turbines Subject to Breaking Waves  

E-Print Network [OSTI]

DESIGN CONSIDERATIONS FOR MONOPILE FOUNDED OFFSHORE WIND TURBINES SUBJECT TO BREAKING WAVES A Thesis by GARRETT REESE OWENS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... Farms ...... 4 Figure 2 Overview of Offshore Wind Turbine Terminology................................. 7 Figure 3 Overturning Moment as a Function of Water Depth ............................... 10 Figure 4 Types of Breaking Waves...

Owens, Garrett Reese 1987-

2012-11-26T23:59:59.000Z

317

Formation of beads-on-a-string structures during break-up of viscoelastic filaments  

E-Print Network [OSTI]

Break-up of viscoelastic filaments is pervasive in both nature and technology. If a filament is formed by placing a drop of saliva between a thumb and forefinger and is stretched, the filament’s morphology close to break-up ...

Bhat, Pardeep P.

318

Symmetry Breaking in Graphene Gregory S. Boebinger, National High Magnetic Field Laboratory  

E-Print Network [OSTI]

Symmetry Breaking in Graphene Gregory S. Boebinger, National High Magnetic Field Laboratory DMR. In this experiment, Landau levels in graphene were used to study the breaking of SU(4) symmetry--a higher dimensional states by their spin polarization. It was found that graphene turns into either a spin ferromagnet

Weston, Ken

319

Hydrogen bond breaking probed with multidimensional stimulated vibrational echo correlation spectroscopy  

E-Print Network [OSTI]

Hydrogen bond breaking probed with multidimensional stimulated vibrational echo correlation September 2003 Hydrogen bond population dynamics are extricated with exceptional detail using ultrafast ( 50 of methanol­OD oligomers in CCl4 . Hydrogen bond breaking makes it possible to acquire data for times much

Fayer, Michael D.

320

Giving up Twitter for Lent: how and why we take breaks from social media  

Science Journals Connector (OSTI)

Social media use is widespread, but many people worry about overuse. This paper explores how and why people take breaks from social media. Using a mixed methods approach, we pair data from users who tweeted about giving up Twitter for Lent with an interview ... Keywords: Twitter, breaks, internet, media refusal, self-control, social media, willpower

Sarita Yardi Schoenebeck

2014-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

On Wave Breaking and the Equilibrium Spectrum of Wind-Generated Waves  

Science Journals Connector (OSTI)

...Equilibrium Spectrum of Wind-Generated Waves M...is made of the loss of energy by wave breaking in a...g the proportion of energy lost per mean wave cycle...equilibrium state the loss of energy by breaking is comparable to that supplied by the wind, one can estimate the...

1969-01-01T23:59:59.000Z

322

EXPERIMENTAL VALIDATION OF A COUPLED BEM-NAVIER-STOKES MODEL FOR SOLITARY WAVE SHOALING AND BREAKING  

E-Print Network [OSTI]

applications are considered. The first one is the case of the breaking of a solitary wave over a step, which). INTRODUCTION Breaking waves on beaches and over ocean bottom discontinuities, constitute one of the most. In particular, due to the increasing power of mod- ern computers, direct Computational Fluid Dynamics (CFD

Grilli, Stéphan T.

323

Hanford Begins New Campaign to Remove Excess Water from Double...  

Energy Savers [EERE]

Hanford Begins New Campaign to Remove Excess Water from Double-Shell Tanks Hanford Begins New Campaign to Remove Excess Water from Double-Shell Tanks September 30, 2014 - 12:00pm...

324

Progress Towards Doubling the Beam Power at Fermilab's Accelerator Complex  

SciTech Connect (OSTI)

After a 14 month shutdown accelerator modifications and upgrades are in place to allow us doubling of the Main Injector beam power. We will discuss the past MI high power operation and the current progress towards doubling the power.

Kourbanis, ioanis

2014-06-01T23:59:59.000Z

325

Sensitivity of CUORE to Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

Sensitivity of CUORE to Neutrinoless Double-Beta Decay b c,:Results of the Search for Neutrinoless D o u b l e - B e t ah e i n a , Evidence for neutrinoless double beta decay, M o

Alessandria, F.

2013-01-01T23:59:59.000Z

326

Double photoionization of helium with synchrotron x-rays: Proceedings  

SciTech Connect (OSTI)

This report contains papers on the following topics: Overview and comparison of photoionization with charged particle impact; The ratio of double to single ionization of helium: the relationship of photon and bare charged particle impact ionization; Double photoionization of helium at high energies; Compton scattering of photons from electrons bound in light elements; Electron ionization and the Compton effect in double ionization of helium; Elimination of two atomic electrons by a single energy photon; Double photoionization of helium at intermediate energies; Double Photoionization: Gauge Dependence, Coulomb Explosion; Single and Double Ionization by high energy photon impact; The effect of Compton Scattering on the double to single ionization ratio in helium; and Double ionization of He by photoionization and Compton scattering. These papers have been cataloged separately for the database.

Not Available

1994-01-01T23:59:59.000Z

327

Photo of the Week: Record-Breaking Solar Cells | Department of Energy  

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

Photo of the Week: Record-Breaking Solar Cells Photo of the Week: Record-Breaking Solar Cells Photo of the Week: Record-Breaking Solar Cells December 7, 2012 - 2:27pm Addthis Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography tool used to manufacture these solar cells. | Photo by Daniel Derkacs/SolarJunction. Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography

328

Photo of the Week: Record-Breaking Solar Cells | Department of Energy  

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

Record-Breaking Solar Cells Record-Breaking Solar Cells Photo of the Week: Record-Breaking Solar Cells December 7, 2012 - 2:27pm Addthis Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography tool used to manufacture these solar cells. | Photo by Daniel Derkacs/SolarJunction. Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography

329

/ Search for Neutrinoless Double Beta Decay with CUORE  

E-Print Network [OSTI]

neutrinoless double beta decay (??0?) in 130 Te and other rare processes. The observation of ??0? would

Elena Ferri

330

Geothermal: Sponsored by OSTI -- Structure of the Electric Double...  

Office of Scientific and Technical Information (OSTI)

Structure of the Electric Double Layer in Hydrothermal Systems. Molecular Simulation Approach and Interpretation of Experimental Results...

331

The Majorana Neutrinoless Double-Beta Decay Experiment  

E-Print Network [OSTI]

The Majorana Neutrinoless Double-Beta Decay Experiment Pre-conceptual Design Proposal November 22 Motivation for Neutrinoless Double-Beta Decay Experiments . . . . . . . . . 4 2.1.1 Community Guidance Neutrinoless Double-Beta Decay Results . . . . . . . . . . . . . . . . . . . . 12 2.5 Next

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

332

Double K-Vacancy Production by X-Ray Photoionization  

E-Print Network [OSTI]

Double K-Vacancy Production by X-Ray Photoionization S. H. Southworth£ , R. W. Dunford£ , E. P Photon Source. Double K-vacancy production in Ne was observed by recording the KK-KLL Auger. For Mo, double K-vacancy production was observed by recording the K fluorescence hypersatellite

333

Sensitivity of CUORE to Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

of CUORE to Neutrinoless Double-Beta Decay b c,:L d e f F .s t results on neutrinoless double beta decay of T e w i t hthe study of neutrinoless double beta decay, J . C r y s t .

Alessandria, F.

2013-01-01T23:59:59.000Z

334

Search for Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

After the pioneering work of the Heidelberg-Moscow (HDM) and International Germanium Experiment (IGEX) groups, the second round of neutrinoless double-$\\beta$ decay searches currently underway has or will improve the life-time limits of double-$\\beta$ decay candidates by a factor of two to three, reaching in the near future the $T_{1/2} = 3 \\times 10^{25}$ yr level. This talk will focus on the large-scale experiments GERDA, EXO-200, and KamLAND-Zen, which have reported already lower half-life time limits in excess of $10^{25}$ yr. Special emphasis is given to KamLAND-Zen, which is expected to approach the inverted hierarchy regime before future 1-ton experiments probe completely this life-time or effective neutrino-mass regime, which starts at $\\approx 2 \\times 10^{26}$ yr or $\\approx 50$ meV.

Tornow, Werner

2014-01-01T23:59:59.000Z

335

Double-clad nuclear fuel safety rod  

DOE Patents [OSTI]

A device for shutting down a nuclear reactor during an undercooling or overpower event, whether or not the reactor's scram system operates properly. This is accomplished by double-clad fuel safety rods positioned at various locations throughout the reactor core, wherein melting of a secondary internal cladding of the rod allows the fuel column therein to shift from the reactor core to place the reactor in a subcritical condition.

McCarthy, William H. (Los Altos, CA); Atcheson, Donald B. (Cupertino, CA); Vaidyanathan, Swaminathan (San Jose, CA)

1984-01-01T23:59:59.000Z

336

Symmetry Breaking, Unification, and Theories Beyond the Standard Model  

SciTech Connect (OSTI)

A model was constructed in which the supersymmetric fine-tuning problem is solved without extending the Higgs sector at the weak scale. We have demonstrated that the model can avoid all the phenomenological constraints, while avoiding excessive fine-tuning. We have also studied implications of the model on dark matter physics and collider physics. I have proposed in an extremely simple construction for models of gauge mediation. We found that the {mu} problem can be simply and elegantly solved in a class of models where the Higgs fields couple directly to the supersymmetry breaking sector. We proposed a new way of addressing the flavor problem of supersymmetric theories. We have proposed a new framework of constructing theories of grand unification. We constructed a simple and elegant model of dark matter which explains excess flux of electrons/positrons. We constructed a model of dark energy in which evolving quintessence-type dark energy is naturally obtained. We studied if we can find evidence of the multiverse.

Nomura, Yasunori

2009-07-31T23:59:59.000Z

337

Treatment methods for breaking certain oil and water emulsions  

DOE Patents [OSTI]

Disclosed are treatment methods for breaking emulsions of petroleum oil and salt water, fatty oil and water, and those resulting from liquefication of organic material. The emulsions are broken by heating to a predetermined temperature at or above about 200.degree. C. and pressurizing to a predetermined pressure above the vapor pressure of water at the predetermined temperature to produce a heated and pressurized fluid. The heated and pressurized fluid is contained in a single vessel at the predetermined temperature and pressure for a predetermined period of time to effectively separate the emulsion into substantially distinct first and second phases, the first phase comprising primarily the petroleum oil, the second phase comprising primarily the water. The first and second phases are separately withdrawn from the vessel at a withdraw temperature between about 200.degree. C. and 374.degree. C. and a withdraw pressure above the vapor pressure of water at the withdraw temperature. Where solids are present in the certain emulsions, the above described treatment may also effectively separate the certain emulsion into a substantially distinct third phase comprising primarily the solids.

Sealock, Jr., L. John (W. Richland, WA); Baker, Eddie G. (Richland, WA); Elliott, Douglas C. (Richland, WA)

1992-01-01T23:59:59.000Z

338

Spontaneous symmetry breaking in Schroedinger lattices with two nonlinear sites  

SciTech Connect (OSTI)

We introduce discrete systems in the form of straight (infinite) and ring-shaped chains, with two symmetrically placed nonlinear sites. The systems can be implemented in nonlinear optics (as waveguiding arrays) and Bose-Einstein condensates (by means of an optical lattice). A full set of exact analytical solutions for symmetric, asymmetric, and antisymmetric localized modes is found, and their stability is investigated in a numerical form. The symmetry-breaking bifurcation, through which the asymmetric modes emerge from the symmetric ones, is found to be of the subcritical type. It is transformed into a supercritical bifurcation if the nonlinearity is localized in relatively broad domains around two central sites, and also in the ring of a small size, i.e., in effectively nonlocal settings. The family of antisymmetric modes does not undergo bifurcations and features both stable and unstable portions. The evolution of unstable localized modes is investigated by means of direct simulations. In particular, unstable asymmetric states, which exist in the case of the subcritical bifurcation, give rise to breathers oscillating between the nonlinear sites, thus restoring an effective dynamical symmetry between them.

Brazhnyi, Valeriy A.; Malomed, Boris A. [Centro de Fisica do Porto, Faculdade de Ciencias, Universidade do Porto, R. Campo Alegre 687, Porto 4169-007 (Portugal); ICFO-Institut de Ciencies Fotoniques, Universitat Politecnica de Catalunya, Mediterranean Technology Park, 08860 Castelldefels (Barcelona) (Spain) and Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978 (Israel)

2011-05-15T23:59:59.000Z

339

Natural cold baryogenesis from strongly interacting electroweak symmetry breaking  

SciTech Connect (OSTI)

The mechanism of ''cold electroweak baryogenesis'' has been so far unpopular because its proposal has relied on the ad-hoc assumption of a period of hybrid inflation at the electroweak scale with the Higgs acting as the waterfall field. We argue here that cold baryogenesis can be naturally realized without the need to introduce any slow-roll potential. Our point is that composite Higgs models where electroweak symmetry breaking arises via a strongly first-order phase transition provide a well-motivated framework for cold baryogenesis. In this case, reheating proceeds by bubble collisions and we argue that this can induce changes in Chern-Simons number, which in the presence of new sources of CP violation commonly lead to baryogenesis. We illustrate this mechanism using as a source of CP violation an effective dimension-six operator which is free from EDM constraints, another advantage of cold baryogenesis compared to the standard theory of electroweak baryogenesis. Our results are general as they do not rely on any particular UV completion but only on a stage of supercooling ended by a first-order phase transition in the evolution of the universe, which can be natural if there is nearly conformal dynamics at the TeV scale. Besides, baryon-number violation originates from the Standard Model only.

Konstandin, Thomas; Servant, Géraldine, E-mail: tkonstan@cern.ch, E-mail: geraldine.servant@cern.ch [CERN Physics Department, Theory Division, CH-1211 Geneva 23 (Switzerland)

2011-07-01T23:59:59.000Z

340

Physical Naturalness and Dynamical Breaking of Classical Scale Invariance  

E-Print Network [OSTI]

We propose a model of a confining dark sector, dark technicolor, that communicates with the Standard Model through the Higgs portal. In this model electroweak symmetry breaking and dark matter share a common origin, and the electroweak scale is generated dynamically. Our motivation to suggest this model is the absense of evidence for new physics from recent LHC data. Although the conclusion is far from certain at this point, this lack of evidence may suggest that no mechanism exists at the electroweak scale to stabilise the Higgs mass against radiative corrections from UV physics. The usual reaction to this puzzling situation is to conclude that the stabilising new physics is either hidden from us by accident, or that it appears at energies that are currently inaccessible, such that nature is indeed fine-tuned. In order to re-examine the arguments that have lead to this dichotomy, we review the concept of naturalness in effective field theories, discussing in particular the role of quadratic divergences in relation to different energy scales. This leads us to suggest classical scale invariance as a guidline for model building, implying that explicit mass scales are absent in the underlying theory.

Matti Heikinheimo; Antonio Racioppi; Martti Raidal; Christian Spethmann; Kimmo Tuominen

2014-05-05T23:59:59.000Z

Note: This page contains sample records for the topic "double strand breaks" 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

Automated inspection of surface breaking cracks using GMR sensor arrays  

SciTech Connect (OSTI)

We present a prototype for automated magnetic stray field testing of ferromagnetic roller bearings. For this purpose NDE-adapted GMR sensor arrays (giant magneto resistance) are used for the detection of surface breaking cracks. The sensors are miniaturized down to the lower ?m-regime to achieve adequate spatial resolution. In doing so, sensor arrays with up to 48 elements are used to inspect the bearing surface within a few seconds only. In contrast to magnetic particle inspection (MPI), where the global magnetization requires a further inspection step and succeeding demagnetization, the presented prototype only locally magnetize the surface area in the vicinity of the GMR Sensors. For the local magnetization, the applied sub-surface magnetic field was simulated and proofed for detecting flaws with a depth of a few 10 ?m. By multiplexing the sensor array with an adapted read out electronics we quasi simultaneously detect the normal field component of about 100?m above the surface. The detection of artificial notches with a depth of 40 ?m and more could be resolved with a SNR better than 20 dB. The presented testing facility is fast and provides a step towards automated testing of safety relevant steel components.

Pelkner, Matthias; Reimund, Verena; Erthner, Thomas; Panke, Nicolai; Kreutzbruck, Marc [BAM Federal Institute for Material Research and Testing, Unter den Eichen 87, 12205 Berlin (Germany)

2014-02-18T23:59:59.000Z

342

Long?term variations of ice breaking noise in Antarctica  

Science Journals Connector (OSTI)

Numerous low frequency transient signals arriving from Antarctica have been detected in five?year sea noise recordings in 2002?2006 at the hydroacoustic listening station deployed off Cape Leeuwin in Western Australia as part of the International Monitoring System of the Comprehensive Nuclear?Test?Ban Treaty. The majority of these signals consist of a single arrival of mode 1 which dominates the higher modes and undergoes strong frequency dispersion due to long?range propagation in the polar ocean environment. These signals are believed to be emitted primarily by ice rifting and breaking events on the Antarctic shelf. Several regions along the Antarctic coast associated with certain glaciers and ice tongues were found to persistently be much more active in generatingicenoise than other parts of the Antarctic shelf. An analysis of long?term changes in the frequency of occurrence of ice events showed noticeable seasonal cycles but did not reveal any significant interannual variations against the background of short?term fluctuations. Some of the ice events detected at the Cape Leeuwin station were also identified in sea noise recordings made on autonomous acoustic loggers deployed on the Antarctic shelf which allowed us to investigate characteristics of the acoustic signals from ice events near their origins.

Alexander Gavrilov; Binghui Li

2008-01-01T23:59:59.000Z

343

A Microscopic Double-Slit Experiment  

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

A Microscopic Double-Slit Experiment Print A Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using particles instead of light, the experiment played a crucial role in establishing the validity of wave-particle duality, a puzzling concept that has ultimately become central to the interpretation of complementarity in quantum mechnanics. In a new twist on this classic experiment, the double slit (with light waves) has been replaced by a diatomic molecule (with electron waves). At ALS Beamline 10.0.1, researchers have shown that diatomic molecules can serve as two-center emitters of electron waves and that traces of electron-wave interference can be directly observed in precise measurements of vibrationally resolved photoionization spectra.

344

A Microscopic Double-Slit Experiment  

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

A Microscopic Double-Slit Experiment Print A Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using particles instead of light, the experiment played a crucial role in establishing the validity of wave-particle duality, a puzzling concept that has ultimately become central to the interpretation of complementarity in quantum mechnanics. In a new twist on this classic experiment, the double slit (with light waves) has been replaced by a diatomic molecule (with electron waves). At ALS Beamline 10.0.1, researchers have shown that diatomic molecules can serve as two-center emitters of electron waves and that traces of electron-wave interference can be directly observed in precise measurements of vibrationally resolved photoionization spectra.

345

Vibration of Generalized Double Well Oscillators  

E-Print Network [OSTI]

We have applied the Melnikov criterion to examine a global homoclinic bifurcation and transition to chaos in a case of a double well dynamical system with a nonlinear fractional damping term and external excitation. The usual double well Duffing potential having a negative square term and positive quartic term has been generalized to a double well potential with a negative square term and a positive one with an arbitrary real exponent $q > 2$. We have also used a fractional damping term with an arbitrary power $p$ applied to velocity which enables one to cover a wide range of realistic damping factors: from dry friction $p \\to 0$ to turbulent resistance phenomena $p=2$. Using perturbation methods we have found a critical forcing amplitude $\\mu_c$ above which the system may behave chaotically. Our results show that the vibrating system is less stable in transition to chaos for smaller $p$ satisfying an exponential scaling low. The critical amplitude $\\mu_c$ as an exponential function of $p$. The analytical results have been illustrated by numerical simulations using standard nonlinear tools such as Poincare maps and the maximal Lyapunov exponent. As usual for chosen system parameters we have identified a chaotic motion above the critical Melnikov amplitude $\\mu_c$.

Grzegorz Litak; Marek Borowiec; Arkadiusz Syta

2006-10-20T23:59:59.000Z

346

Biological Effects of Space Radiation on Human Cells: History, Advances and Outcomes  

Science Journals Connector (OSTI)

......XIV crossed intense solar flares explaining...and clo- nogenic cell survival assays that...Although the onboard technology available did not...were likely due to solar flares. From all...time variation of solar cosmic rays during...double-strand breaks in human cells: history, progress......

Mira Maalouf; Marco Durante; Nicolas Foray

2011-03-01T23:59:59.000Z

347

Ionizing radiation damage to the folded chromosome of Escherichia coli K-12: sedimentation properties of irradiated nucleoids and chromosomal deoxyribonucleic acid.  

Science Journals Connector (OSTI)

...double-strand breaks by ionizing radiation listed in Table 2 were calculated...4, 5). For this reason, doses of ionizing radiation in excess of 10 krads were used...the biologically significant dose range of less than 10 krads suggested...

K M Ulmer; R F Gomez; A J Sinskey

1979-05-01T23:59:59.000Z

348

BioMed Central Page 1 of 10  

E-Print Network [OSTI]

of neocarzinostatin-induced DNA double-strand breaks. Background Ionizing radiation induces multiple lesions in cell) in proportion to the radiation dose. Among the enzymes that have evolved for the repair of radiation damage-B activation and proper management of the oxidative stress inherent in radiation exposure. DNA

Boyer, Edmond

349

DNA-Repair Genetic Polymorphisms and Breast Cancer Risk  

Science Journals Connector (OSTI)

...auspices of US Department of Energy Contract #W-7405-ENG-48...double-strand break; FH, family history; HWE, Hardy-Weinberg...R., Perry H. R., Price F. M., Sanford K...adjustment for age, family history, age at menarche, age...North Carolina 27157, USA. | Journal Article Research...

Tasha R. Smith; Edward A. Levine; Nancy D. Perrier; Mark Steven Miller; Rita I. Freimanis; Kurt Lohman; L. Douglas Case; Jianfeng Xu; Harvey W. Mohrenweiser; and Jennifer J. Hu

2003-11-01T23:59:59.000Z

350

ATR Affecting Cell Radiosensitivity Is Dependent on Homologous Recombination Repair but Independent of Nonhomologous End Joining  

Science Journals Connector (OSTI)

...Toxicology, Maine Center for Toxicology and Environmental Health, Portland, ME, University of Bridgeport, Bridgeport, CT...DNA double strand breaks (DSBs) formation, one of the most dangerous types of DNA damage. The hMRE11-RAD50-NBS1 protein complex...

Hongyan Wang; Huichen Wang; Simon N. Powell; George Iliakis; and Ya Wang

2004-10-01T23:59:59.000Z

351

Proteogenomic Analysis Reveals Unanticipated Adaptations of Colorectal Tumor Cells to Deficiencies in DNA Mismatch Repair  

Science Journals Connector (OSTI)

...related double-strand break repair protein NBN, which are constituents...decreased DNA synthesis and repair in MMR- cells (Fig. 4...application of our newly developed pipeline for the detection of variant...in DNA and RNA synthesis and repair. The driving proteins behind...

Patrick J. Halvey; Xiaojing Wang; Jing Wang; Ajaz A. Bhat; Punita Dhawan; Ming Li; Bing Zhang; Daniel C. Liebler; and Robbert J.C. Slebos

2014-01-01T23:59:59.000Z

352

MDC1 Cleavage by Caspase-3: A Novel Mechanism for Inactivating the DNA Damage Response during Apoptosis  

Science Journals Connector (OSTI)

...double-strand break repair and may be a novel therapeutic...commonly used or are in the pipeline, yet virtually all pancreatic...these lines, the DNA repair pathway is an attractive...timely drug development pipeline. Therefore, the model...components of the DNA repair complex (31, 33...

Stéphanie Solier and Yves Pommier

2011-02-01T23:59:59.000Z

353

in this issue nature methods | VOL.9 NO.10 | OCTOBER 2012  

E-Print Network [OSTI]

difficult. Mirny, Dekker and colleagues describe a pipeline to normalize Hi-C data (which provides an all insertions and deletions during the repair of an endonuclease-mediated DNA double-strand break (DSB) is increasingly exploited to carry out precise gene disruption. However, the DSB can be precisely repaired and re

Cai, Long

354

Automated analysis of time-lapse fluorescence microscopy images: from live cell images to intracellular foci  

Science Journals Connector (OSTI)

......varying sizes and shapes. The segmentation pipeline consists of three steps: (i) detection...image stack. In the first step of the pipeline, a marker is identified for each potential...related to the DNA double-strand break repair kinetics. For example, we found in normal......

Oleh Dzyubachyk; Jeroen Essers; Wiggert A. van Cappellen; Céline Baldeyron; Akiko Inagaki; Wiro J. Niessen; Erik Meijering

2010-10-01T23:59:59.000Z

355

Structural biology and bioinformatics in drug design: opportunities and challenges for target identification and lead discovery  

Science Journals Connector (OSTI)

...by charged and polar patches. Figure 7 The human...essential for normal DNA repair, there is an advantage...structure determination pipeline. Proc. Natl Acad...double-strand-break-repair mutant mammalian cells...gene and its role in DNA repair and V(D)J recombination...

2006-01-01T23:59:59.000Z

356

Models for Achromatic Light-Curve Breaks in GRB Afterglows: Jets, Structured Outflows, and Energy Injection  

E-Print Network [OSTI]

The steepening (break) of the power-law fall-off observed in the optical emission of some GRB afterglows at epoch ~1 day is often attributed to a collimated outflow (jet), undergoing lateral spreading. Wider opening GRB ejecta with a non-uniform energy angular distribution (structured outflows) or the cessation of energy injection in the afterglow can also yield light-curve breaks. We determine the optical and X-ray light-curve decay indices and spectral energy distribution slopes for 10 GRB afterglows with optical light-curve breaks (980519, 990123, 990510, 991216, 000301, 000926, 010222, 011211, 020813, 030226), and use these properties to test the above models for light-curve steepening. It is found that the optical breaks of six of these afterglows can be accommodated by either energy injection or by structured outflows. In the refreshed shock model, a wind-like stratification of the circumburst medium (as expected for massive stars as GRB progenitors) is slightly favoured. A spreading jet interacting with a homogeneous circumburst medium is required by the afterglows 990510, 000301, 011211, and 030226. The optical pre- and post-break decays of these four afterglows are incompatible with a wind-like medium. The current sample of 10 afterglows with breaks suggests that the distribution of the break magnitude (defined as the increase of the afterglow decay exponent) is bimodal, with a gap at 1. If true, this bimodality favours the structured outflow model, while the gap location indicates a homogeneous circumburst environment.

A. Panaitescu

2005-06-23T23:59:59.000Z

357

Nuclear matrix elements for neutrinoless double-beta decay and double-electron capture  

E-Print Network [OSTI]

A new generation of neutrinoless double beta decay experiments with improved sensitivity is currently under design and construction. They will probe inverted hierarchy region of the neutrino mass pattern. There is also a revived interest to the resonant neutrinoless double-electron capture, which has also a potential to probe lepton number conservation and to investigate the neutrino nature and mass scale. The primary concern are the nuclear matrix elements. Clearly, the accuracy of the determination of the effective Majorana neutrino mass from the measured 0\

Amand Faessler; Vadim Rodin; Fedor Simkovic

2012-06-03T23:59:59.000Z

358

Neutrinoless Double Beta Decay with Composite Neutrinos.  

E-Print Network [OSTI]

We study in detail the contribution of heavy composite Majorana neutrinos to neutrino-less double beta decay (0???). Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of 0??? are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments.

O. Panella (a; C. Carimalo (b; Y. N. Srivastava (a; A. Widom (c

1997-01-01T23:59:59.000Z

359

Double acting stirling engine phase control  

DOE Patents [OSTI]

A mechanical device for effecting a phase change between the expansion and compression volumes of a double-acting Stirling engine uses helical elements which produce opposite rotation of a pair of crankpins when a control rod is moved, so the phase between two pairs of pistons is changed by +.psi. and the phase between the other two pairs of pistons is changed by -.psi.. The phase can change beyond .psi.=90.degree. at which regenerative braking and then reversal of engine rotation occurs.

Berchowitz, David M. (Scotia, NY)

1983-01-01T23:59:59.000Z

360

Neutrino Oscillations, Neutrinoless Double Beta Decay  

Science Journals Connector (OSTI)

We review the experimental evidence for neutrino mixing and neutrino mass. Searches for possible branches into heavy neutrinos do not reveal evidence for static mixing with branching ratios larger than 10?4 to 10?6. Similarly neutrino oscillation experiments show no evidence for dynamic mixing in various oscillation channels. Stringent limits for ? e disappearance from a recent reactor experiment are presented. Results from neutrinoless double beta decay provide sensitive test for Majorana mass and right?hand couplings the present limits being 3–10 eV and 10?5 respectively.

F. Boehm

1982-01-01T23:59:59.000Z

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


361

Neutrinoless double beta decay and neutrino masses  

Science Journals Connector (OSTI)

Neutrinoless double beta decay (0???) is a promising test for lepton number violating physics beyond the standard model (SM) of particle physics. There is a deep connection between this decay and the phenomenon of neutrino masses. In particular we will discuss the relation between 0??? and Majorana neutrino masses provided by the so-called Schechter-Valle theorem in a quantitative way. Furthermore we will present an experimental cross check to discriminate 0??? from unknown nuclear background using only one isotope i.e. within one experiment.

Michael Duerr

2012-01-01T23:59:59.000Z

362

Neutrinoless double ? decay with composite neutrinos  

Science Journals Connector (OSTI)

We study in detail the contribution of heavy composite Majorana neutrinos to neutrinoless double beta decay (0???). Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic-type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of 0??? are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments.

O. Panella; C. Carimalo; Y. N. Srivastava; A. Widom

1997-11-01T23:59:59.000Z

363

Breaking Up - And Making Up - Are Hard To Do | U.S. DOE Office of  

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

Breaking Up Breaking Up - And Making Up - Are Hard To Do News Featured Articles 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Science Headlines Presentations & Testimony News Archives Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 12.27.11 Breaking Up - And Making Up - Are Hard To Do But as Office of Science research shows, the results can be electric. Print Text Size: A A A Subscribe FeedbackShare Page It's said that breaking up is hard to do. That's undoubtedly true. And so is making up, as more than a few forlorn hearts have found. But when the lightning does strike, the electricity is lasting. What's true for the affairs of the heart also holds for the affairs of hydrogen, as researchers at the Office of Science's Argonne National

364

TeV scale left-right symmetry with spontaneous D-parity breaking  

SciTech Connect (OSTI)

The different scenarios of spontaneous breaking of D parity have been studied in both the nonsupersymmetric and the supersymmetric version of the left-right symmetric models (LRSM). We explore the possibility of a TeV scale SU(2){sub R} breaking scale M{sub R} and hence TeV scale right-handed neutrinos from both minimization of the scalar potential as well as the coupling constant unification point of view. We show that, although minimization of the scalar potential allows the possibility of a TeV scale M{sub R} and tiny neutrino masses in LRSM with spontaneous D-parity breaking, the gauge coupling unification at a high scale {approx}10{sup 16} GeV does not favor a TeV scale symmetry breaking except in the supersymmetric left-right model with Higgs doublet and bidoublet. The phenomenology of neutrino mass is also discussed.

Borah, Debasish [Indian Institute of Technology Bombay, Mumbai-400076 (India); Patra, Sudhanwa; Sarkar, Utpal [Physical Research Laboratory, Ahmedabad-380009 (India)

2011-02-01T23:59:59.000Z

365

Rapid generation of upwelling at a shelf break caused by buoyancy shutdown  

Science Journals Connector (OSTI)

Model analyses of an along-shelf flow over a continental shelf and slope reveal upwelling near the shelf break. A stratified, initially uniform along-shelf flow undergoes a rapid adjustment with notable differences onshore and offshore of the ...

Jessica Benthuysen; Leif N. Thomas; Steven J. Lentz

366

Electroweak symmetry breaking in the era of the Higgs boson discovery  

E-Print Network [OSTI]

In this thesis we study possible deviations from the electroweak symmetry breaking mechanism as predicted by the Standard Model (SM), and we introduce a new framework to analyze hadronic final states at colliders. In the ...

Bertolini, Daniele, Ph. D. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

367

Break-up of Pt catalyst surfaces by high CO coverage  

E-Print Network [OSTI]

and atomic arrangement of catalyst surface under reactionof reactant molecules on the catalyst surfaces are the norm.Break-up of Pt catalyst surfaces by high CO coverage Feng

Tao, Feng

2010-01-01T23:59:59.000Z

368

Symmetry breaking in O+4: an application of the Brueckner coupled-cluster method  

Science Journals Connector (OSTI)

A recent calculation of the antisymmetric stretch frequency for the rectangular structure of quartet O+4 using the QCISD(T) method gave a value of 3710 cm?1. This anomalous frequency is shown to be a consequence of symmetry-breaking effects, which occur even though the QCISD(T) solution derived from a delocalized SCF reference function lies energetically well below the two localized (symmetry-broken) solutions at the equilibrium geometry. The symmetry breaking is almost eliminated at the CCSD level of theory, but the small remaining symmetry-breaking effects are magnified at the CCSD(T) level of theory so that the antisymmetric stretch frequency is still significantly in error. The Brueckner coupled-cluster method, however, leads to a symmetrical solution which is free of symmetry-breaking effects, with an antisymmetric stretch frequency of 1322 cm?1, in good agreement with our earlier calculations using the CASSCF/CASSI method.

Leslie A. Barnes; Roland Lindh

1994-01-01T23:59:59.000Z

369

Physics and learning based computational models for breaking bow waves based on new boundary immersion approaches  

E-Print Network [OSTI]

A ship moving on the free surface produces energetic breaking bow waves which generate spray and air entrainment. Present experimental, analytic, and numerical studies of this problem are costly, inaccurate and not robust. ...

Weymouth, Gabriel David

2008-01-01T23:59:59.000Z

370

Numerical evidence of turbulence generated by non-breaking surface waves  

Science Journals Connector (OSTI)

Numerical simulation of monochromatic surface waves propagating over a turbulent field is conducted to reveal the mechanism of turbulence production by non-breaking waves. The numerical model solves the primitive equations subject to the fully ...

Wu-ting Tsai; Shi-ming Chen; Guan-hung Lu

371

Introduction of Break-Out Session at the International PV Module Quality Assurance Forum (Presentation)  

SciTech Connect (OSTI)

This presentation outlines review requirements for quality assurance (QA) rating systems, logical design of QA systems, and specific tasks for break-out session 1 of the 2011 International PV Module Quality Assurance Forum.

Kurtz, S.; Wohlgemuth, J.; Yamamichi, M.; Sample, T.

2011-07-01T23:59:59.000Z

372

Fluid-bubble interaction and dissipation mechanisms under unsteady breaking waves  

E-Print Network [OSTI]

Fluid-bubble interaction and dissipation mechanisms under unsteady breaking waves of air in bubbles that are believed to suppress liquid phase turbulence to incorporate entrained bubble populations using an Eulerian-Eulerian formulation

Kirby, James T.

373

U.S. gasoline prices decreases for 16th week in a row; breaking...  

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

18, 2015 U.S. gasoline prices decreases for 16th week in a row; breaking previous record set in 2008 (long version) The U.S. average retail price for regular gasoline fell 7.3...

374

U.S. gasoline prices decreases for 16th week in a row; breaking...  

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

gasoline prices decreases for 16th week in a row; breaking previous record set in 2008 (short version) The U.S. average retail price for regular gasoline fell 7.3 cents from a week...

375

E-Print Network 3.0 - anomaly-mediated supersymmetry breaking...  

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

; Physics 58 arXiv:hep-ph0103095v19Mar2001 Low-Energy Supersymmetry and its Phenomenology Summary: . This approach has been called anomaly-mediated SUSY-breaking (AMSB)....

376

Substitutional Routing for Trunk Line Break-Down in the Teletransmission Network  

Science Journals Connector (OSTI)

Trunk-line break-down in teletransmission network interrupts some number of the routes of some different links. It makes necessary to restore, at least partially, failed transmission possibilities for each affect...

dr ing. Kornel Wydro

1988-01-01T23:59:59.000Z

377

Spring Break Course in Florida! Forensic entomology is a branch of forensic sci-  

E-Print Network [OSTI]

Spring Break Course in Florida! Forensic entomology is a branch of forensic sci- ence utilizing the science of forensic en- tomology through daily laboratory and field ac- tivities. We also interact

378

COMM-OPINION-ORDER, 76 FERC 61,347, Promoting Wholesale Competition Through Open-Access Non-discriminatory Transmission Services by Public Utilities, Docket No. RM95-8-000, Recovery of Stranded Costs by  

E-Print Network [OSTI]

-discriminatory Transmission Services by Public Utilities, Docket No. RM95-8-000, Recovery of Stranded Costs by Public Utilities and Transmitting Utilities, Docket No. RM94-7-001, (Sep. 27, 1996) COPYRIGHT 1999, CCH by Public Utilities, Docket No. RM95-8-000, Recovery of Stranded Costs by Public Utilities and Transmitting

Laughlin, Robert B.

379

Simulation of a small break loss of coolant accident conducted at the BETHSY Integral Test Facility  

E-Print Network [OSTI]

. The computer code RELAP5/MOD3 was used to model the BETHSY Integral Test Facility for a. small break loss of coolant accident. This transient simulates a 2 inch cold leg break without high pressure safety injection, following the conditions of International..., and general input to my gra, duate education. TABLE OF CONTENTS CHAPTER Page I INTRODUCTION I. 1 Need for Investigation I. 2 Computational Modeling . I. 3 Experimental Modeling I, 4 International Cooperation . 1 3 RELAP5 CODE DESCRIPTION II. 1...

Bott, Charles Patrick

1992-01-01T23:59:59.000Z

380

Double pion photoproduction off 40Ca  

E-Print Network [OSTI]

The photoproduction of pi0pi0 and pi0pi+/- pairs off 40Ca has been investigated with the TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI accelerator. Data have been taken for incident photon energies in the energy range from 200 - 820 MeV. Total cross sections have been extracted from threshold up to the maximum photon energy and invariant mass distributions of the pion pairs have been obtained for incident photon energies between 400 - 500 MeV and 500 - 550 MeV. The double pi0 invariant mass distributions show some relative enhancement with respect to the mixed charge channel at small invariant masses. The effects are smaller than previously observed for lead nuclei and the distributions do not significantly deviate from carbon data. The data are in good agreement with the results of recent calculations in the framework of the BUU model, with careful treatment of final state interaction effects but without an explicit in-medium modification of scalar, iso-scalar pion pairs. This means that for Ca most of the experimentally observed effect can be explained by final state interactions. Only at low incident photon energies there is still a small low mass enhancement of the double pi0 data over the BUU results.

F. Bloch; J. Ahrens; J. R. M. Annand; R. Beck; L. S. Fog; D. Hornidge; S. Janssen; M. Kotulla; B. Krusche; J. C. McGeorge; I. J. D. MacGregor; J. G. Messchendorp; V. Metag; R. Novotny; R. O. Owens; M. Pfeiffer; M. Rost; R. Sanderson; S. Schadmand; A. Thomas; D. P. Watts

2007-03-24T23:59:59.000Z

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


381

Search For Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The HEIDELBERG-MOSCOW experiment, which is the most sensitive double beta decay experiment since ten years has been regularly continued until end of November 2003. An analysis of the data has been performed already until May 20, 2003. The experiment yields now, on a 4? level, evidence for lepton number violation and proves that the neutrino is a Majorana particle. It further shows that neutrino masses are degenerate. In addition it puts several stringent constraints on other physics beyond the Standard Model. Among others it opens the door to test various supersymmetric theory scenarios, for example it gives the sharpest in the R-parity violating part of the superpotential, and limit on the parameter ? ? 111 gives information on the splitting of the sneutrino-antisneutrino system. The result from the HEIDELBERG-MOSCOW experiment is consistent with recent results from CMB investigations, with high energy cosmic rays, with the result from the g-2 experiment and with recent theoretical work. It is indirectly supported by the analysis of other Ge double beta experiments. Recent criticism of various kind has been shown to be wrong, among others by measurements performed in 2003 with a 214Bi source ( 226Ra), by simulation of the background in the range of Q?? by GEANT4, and by deeper investigation of statistical features such as sensitivity of peak search, and relevance of width of window of analysis. 1

H. V. Klapdor-kleingrothaus *a; I. V. Krivosheina A; A. Dietz A

2004-01-01T23:59:59.000Z

382

Particle acceleration in double radio sources  

Science Journals Connector (OSTI)

Further study has been made of a model of extragalactic double radio sources in which the magnetized accretion disc of a massive black hole acts as an electric dynamo producing oppositely directed beams of relativistic particles. An empty region of small angular size—a vortice core—is shown to be a possible consequence of the hydrodynamics of accretion of gas with angular momentum. An ambient magnetic field in the gas tends to accumulate in the core region. The acceleration of electrons in the dynamo electric field gives rise to oppositely directed electron beams which in turn produce synchroton gamma rays collimated along the core. Collisions between the gamma rays and low energy photons caN initiate an electromagnetic cascade shower. The cascade acts to produce a collimated relativistic electron?positron beam. If the current flow in the dynamo occurs in surges then the outward propagation of the head of the electron–positron beams may produce expanding compact radio components. The electron–positron beam is ballistic in nature and it is electrically neutral and carries no current. Such a beam appears to have favorable stability properties. The beam is eventually stopped and spread out in pitch angle by the ram pressure of the external medium. Synchrotron radiated lobes of double radio sources.

R. V. E. Lovelace; J. MacAuslan; M. Burns

1979-01-01T23:59:59.000Z

383

Double Retort System for Materials Compatibility Testing  

SciTech Connect (OSTI)

With Naval Reactors (NR) approval of the Naval Reactors Prime Contractor Team (NRPCT) recommendation to develop a gas cooled reactor directly coupled to a Brayton power conversion system as the Space Nuclear Power Plant (SNPP) for Project Prometheus (References a and b) there was a need to investigate compatibility between the various materials to be used throughout the SNPP. Of particular interest was the transport of interstitial impurities from the nickel-base superalloys, which were leading candidates for most of the piping and turbine components to the refractory metal alloys planned for use in the reactor core. This kind of contamination has the potential to affect the lifetime of the core materials. This letter provides technical information regarding the assembly and operation of a double retort materials compatibility testing system and initial experimental results. The use of a double retort system to test materials compatibility through the transfer of impurities from a source to a sink material is described here. The system has independent temperature control for both materials and is far less complex than closed loops. The system is described in detail and the results of three experiments are presented.

V. Munne; EV Carelli

2006-02-23T23:59:59.000Z

384

Evidence for the Coupling of ATP Hydrolysis to the Final (Extension) Phase of RecA Protein-mediated DNA Strand Exchange*  

E-Print Network [OSTI]

Evidence for the Coupling of ATP Hydrolysis to the Final (Extension) Phase of RecA Protein-Madison, Madison, Wisconsin 53706 RecA protein promotes a limited DNA strand ex- change reaction, without ATP. This nascent hybrid DNA is extended in a reaction that can be coupled to ATP hydrolysis. When ATP is hydrolyzed

Cox, Michael M.

385

AID Associates with Single-Stranded DNA with High Affinity and a Long Complex Half-Life in a Sequence-Independent Manner  

Science Journals Connector (OSTI)

...indicating that AID binds these bubble substrates with very high affinities...binding affinities of AID to bubble substrates suggests that AID...of relatively high complex stability. AID complex formation on...single-stranded region of the bubble, it remained plausible that...

Mani Larijani; Alexander P. Petrov; Oxana Kolenchenko; Maribel Berru; Sergey N. Krylov; Alberto Martin

2006-10-23T23:59:59.000Z

386

Direct Inhibition of Tombusvirus Plus-Strand RNA Synthesis by a Dominant Negative Mutant of a Host Metabolic Enzyme, Glyceraldehyde-3-Phosphate Dehydrogenase, in Yeast and Plants  

Science Journals Connector (OSTI)

...assay based on yeast cell-free extracts (CFE) that are prepared from yeast mutant strains...positive-strand viral RNAs in the GAPDH-depleted CFE, resulting in symmetric replication of...recombinant GAPDH to the GAPDH-depleted CFE restored asymmetric RNA synthesis by producing...

Tyng-Shyan Huang; Peter D. Nagy

2011-06-22T23:59:59.000Z

387

Neutrinoless double beta decay search with the NEMO 3 experiment  

Science Journals Connector (OSTI)

The NEMO 3 experiment searches for neutrinoless double beta decay and makes precision measurements of two?neutrino double beta decay in seven isotopes. The latest two?neutrino half?life results are presented together with the limits on neutrinoless half?lives and the corresponding effective Majorana neutrino masses. Also given are the limits obtained on neutrinoless double beta decay mediated by R p ?violating SUSY right?hand currents and different Majoron emission modes.

Irina Nasteva; NEMO collaboration

2008-01-01T23:59:59.000Z

388

Thermal Performance of a Double-Tube Type Lng Vaporizer  

Science Journals Connector (OSTI)

This report concerns the confirmed test results and method of analysis of the thermal performance of a double-tube type LNG vaporizer (DTV). The DTV is a...

Y. Miyata; T. Miura; S. Kasahara; H. Shohtani…

1994-01-01T23:59:59.000Z

389

Majorana Neutrino Masses from Neutrinoless Double Beta Decay and Cosmology  

E-Print Network [OSTI]

When three Majorana neutrinos describe the solar and atmospheric neutrino data via oscillations, a nonzero measurement of neutrinoless double beta ($0\

V. Barger; K. Whisnant

1999-04-08T23:59:59.000Z

390

Electromagnetically Induced Transparency in a Double Well Atomic Josephson Junction  

E-Print Network [OSTI]

observation of these Josephson junction resonances. 2.dressed Bose condensed Josephson junction Let us consider ain a Double Well Atomic Josephson Junction J.O. Weatherall

Weatherall, J. O.; Search, C. P.

2009-01-01T23:59:59.000Z

391

Neutrinoless double beta decay can constrain neutrino dark matter  

E-Print Network [OSTI]

We examine how constraints can be placed on the neutrino component of dark matter by an accurate measurement of neutrinoless double beta ($0\

V. Barger; S. L. Glashow; D. Marfatia; K. Whisnant

2002-02-26T23:59:59.000Z

392

The complex Doppler effect in double negative media  

Science Journals Connector (OSTI)

The Doppler effect in doubly double negative acoustic media is ... ’s functions. It is shown that several Doppler modes can be generated by a monochromatic...

I. V. Lisenkov; S. A. Nikitov

2011-06-01T23:59:59.000Z

393

A Search for Neutrinoless Double Beta Decay of Te-130.  

E-Print Network [OSTI]

??This dissertation describes an experimental search for neutrinoless double beta (0???) decay of 130Te. An observation of 0??? decay would establish that neutrinos are Majorana… (more)

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

394

2005 Double white lines on bills of Razorbill 103 DOUBLE WHITE LINES ON THE BILL OF THE  

E-Print Network [OSTI]

2005 Double white lines on bills of Razorbill 103 DOUBLE WHITE LINES ON THE BILL OF THE RAZORBILL.L., MUZAFFAR S.B. & JONES I.L. Lavers J.L., Muzaffar S.B. & Jones I.L. 2006. Double white lines on the bill Seabirds 7(3): 103-108. One of the diagnostic features of the Razorbill Alca torda is the distinct white

Jones, Ian L.

395

A hybrid double-dot in silicon  

SciTech Connect (OSTI)

We report electrical measurements of a single arsenic dopant atom in the tunnel barrier of a silicon single-electron transistor (SET). In addition to performing the electrical characterisation of the individual dopants, we study the series electrical transport through the dopant and SET. We measure the bias triangles of this hybrid double-dot and show that we can tune the electrostatic coupling between the two sub-systems. Additionally, we measured SET in which an additional plunger gate allows the reduction of the electron number in the SET down to the few-electron regime where the dot presents well-defined spin configurations. Finally, we discuss the challenges of operating a dopant-dot hybrid system in the few-electron regime.

Gonzalez-Zalba, M. F.; Heiss, D.; Ferguson, A. J. [Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge (United Kingdom)

2013-12-04T23:59:59.000Z

396

Efficient jitter compensation using double exponential smoothing  

Science Journals Connector (OSTI)

This paper proposes a new jitter reduction scheme based on double exponential smoothing (DES). We compare this DES-based method to jitter reduction methods based on the Kalman filter (KF) and extended Kalman filter (EKF), two well-known methods of jitter reduction. To evaluate the jitter reduction performance, we used a laser pointer interaction system with a known problem with jittery laser spot movements caused by natural hand tremors. We show that the DES-based scheme runs approximately 100 times faster than the EKF-based method and 19 times faster than the KF-based method. Furthermore, in terms of jitter reduction, the proposed DES-based method yields approximately 18% better results than the EKF-based method and 20% better results than the KF-based method.

Min Gyo Chung; Sang-Kyun Kim

2013-01-01T23:59:59.000Z

397

Range Separated Brueckner Coupled Cluster Doubles Theory  

E-Print Network [OSTI]

We introduce a range-separation approximation to coupled cluster doubles (CCD) theory that successfully overcomes limitations of regular CCD when applied to the uniform electron gas. We combine the short-range ladder channel with the long-range ring channel in the presence of a Bruckner renormalized one-body interaction and obtain ground-state energies with an accuracy of 0.001 a.u./electron across a wide range of density regimes. Our scheme is particularly useful in the low-density and strongly-correlated regimes, where regular CCD has serious drawbacks. Moreover, we cure the infamous overcorrelation of approaches based on ring diagrams (i.e. the particle-hole random phase approximation). Our energies are further shown to have appropriate basis set and thermodynamic limit convergence, and overall this scheme promises energetic properties for realistic periodic and extended systems which existing methods do not possess.

Shepherd, James J; Scuseria, Gustavo E

2013-01-01T23:59:59.000Z

398

Experimental searches of neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double decay is a unique probe for lepton number conservation and neutrino properties. It allows to investigate the Dirac/Majorana nature of the neutrinos and their absolute mass scale (hierarchy problem) with unprecedented sensitivity. A number of experiments are presently under preparation to cover the quasi-degenerate region of the neutrino mass spectrum. Improved sensitivities are however required to sound the so-called inverted hierarchy region. This is a real challenge faced by a number of new proposed projects, based either on large expansions of the present experiments or on new ideas top improve the technical performance or reduce the background contributions. A review of the most relevant ongoing experiments is given. The most relevant parameters contributing to the experimental sensitivity are discussed and a critical comparison of the future projects is proposed.

Oliviero Cremonesi

2012-12-19T23:59:59.000Z

399

Double Shell Tank (DST) Utilities Specification  

SciTech Connect (OSTI)

This specification establishes the performance requirements and provides the references to the requisite codes and standards to he applied during the design of the Double-Shell Tank (DST) Utilities Subsystems that support the first phase of waste feed delivery (WFD). The DST Utilities Subsystems provide electrical power, raw/potable water, and service/instrument air to the equipment and structures used to transfer low-activity waste (LAW) and high-level waste (HLW) to designated DST staging tanks. The DST Utilities Subsystems also support the equipment and structures used to deliver blended LAW and HLW feed from these staging tanks to the River Protection Project (RPP) Privatization Contractor facility where the waste will be immobilized. This specification is intended to be the basis for new projects/installations. This specification is not intended to retroactively affect previously established project design criteria without specific direction by the program.

SUSIENE, W.T.

2000-04-27T23:59:59.000Z

400

Correlations and the neutrinoless double beta decay  

Science Journals Connector (OSTI)

We explore the influence of the deformation on the nuclear matrix elements of the neutrinoless double beta decay (NME) concluding that the difference in deformation ?or more generally on the amount of quadrupole correlations? between parent and grand daughter nuclei quenchs strongly the decay. We discuss how varies the nuclear matrix element of 76 Ge decay when the wave functions of the two nuclei involved in the transition are constrained to reproduce the experimental occupancies. In the Interacting Shell Model description the value of the NME is enhanced about 15% compared to previous calculations whereas in the QRPA the NME’s are reduced by 20%–30% thus the discrepancies between both approaches diminish.

J. Menéndez; A. Poves; E. Caurier; F. Nowacki

2009-01-01T23:59:59.000Z

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401

Deep subwavelength plasmonic waveguide switch in double graphene layer structure  

E-Print Network [OSTI]

Deep subwavelength plasmonic waveguide switch in double graphene layer structure Hideo Iizuka in double graphene layer structure Hideo Iizuka1,a) and Shanhui Fan2,b) 1 Toyota Central Research December 2013) Graphene provides excellent prospects of the dynamic tunability, low propagation loss

Fan, Shanhui

402

Double quantum dot as a minimal thermoelectric generator  

Science Journals Connector (OSTI)

Based on numerical renormalization group calculations, we demonstrate that experimentally realized double quantum dots constitute a minimal thermoelectric generator. In the Kondo regime, one quantum dot acts as an n-type and the other one as a p-type thermoelectric device. Properly connected, a capacitively coupled double quantum dot provides a miniature power supply utilizing the thermal energy of the environment.

S. Donsa; S. Andergassen; K. Held

2014-03-05T23:59:59.000Z

403

Strategies for Next Generation Neutrinoless Double-Beta Decay Experiments  

E-Print Network [OSTI]

Strategies for Next Generation Neutrinoless Double-Beta Decay Experiments F. T. Avignone III A brief discussion of the connection between neutrino oscillation data and predictions of neutrinoless the necessary tools for comparative evaluation. 1. INTRODUCTION Neutrinoless double-beta (0)-decay has been

404

Neutrinoless double-beta decay. A brief review  

E-Print Network [OSTI]

In this brief review we discuss the generation of Majorana neutrino masses through the see-saw mechanism, the theory of neutrinoless double-beta decay, the implications of neutrino oscillation data for the effective Majorana mass, taking into account the recent Daya Bay measurement of theta_13, and the interpretation of the results of neutrinoless double-beta decay experiments.

S. M. Bilenky; C. Giunti

2012-03-23T23:59:59.000Z

405

Effects of $?$-cluster breaking on 3$?$ cluster structures in $^{12}$C  

E-Print Network [OSTI]

To clarify the effects of $\\alpha$-cluster breaking on 3$\\alpha$ cluster structures in $^{12}$C, we investigate $^{12}$C using a hybrid model that combines the Brink-Bloch cluster model with the $p_{3/2}$ subshell closure wave function. We have found that $\\alpha$-cluster breaking caused by spin-orbit force significantly changes cluster structures of excited $0^{+}$ states through orthogonality to lower states. Spatially developed cluster components of the $0^{+}_{2}$ state are reduced. The $0^{+}_{3}$ state changes from a vibration mode in the bending motion of three $\\alpha$ clusters to a chain-like 3$\\alpha$ structure having an open triangle configuration. As a result of these structure changes of $0^{+}$ states, the band assignment for the $2^{+}_{2}$ state is changed by the $\\alpha$-cluster breaking effect. Namely, in model calculations without the $\\alpha$-cluster breaking effect, the $0^{+}_{2}$ state is assigned to be the band-head of the $2^{+}_{2}$ state. However, when we incorporate $\\alpha$-cluster breaking caused by the spin-orbit force, the $0^{+}_{3}$ state is regarded as the band-head of the $2^{+}_{2}$ state.

Tadahiro Suhara; Yoshiko Kanada-En'yo

2014-11-05T23:59:59.000Z

406

The noise spectral parameters and the energy of breaking waves experimental study  

Science Journals Connector (OSTI)

The process of wave breaking and whitecap creation is one of the most important and least understood phenomena associated with the evolution of the surface gravity waves in the open sea. This process is the main way of energy and momentum transfer between ocean and atmosphere. However it is very difficult to estimate under real sea conditions the frequency of breaking wave events or the fraction of sea surface covered by whitecaps and the amount of dissipated energy produced by wave breaking. A controlled experiment was carried out in the Ocean Basin Laboratory at MARINTEK Trondheim (Norway). The simulation of random waves of the prescribed spectra provided a very realistic pattern of the sea surface. The number of breaking waves was estimated using photography method and wave staff recording. Acoustic measurements during the experiments were conducted in order to examine the relationship between the noise spectral parameters and both the whitecap coverage and dissipation energy of breaking waves for different types of waves. A comparison of simultaneous video observations wave staff records of the surface wave above the hydrophones with the spectral parameters of acoustical signals made it possible to find physical links between processes.

2003-01-01T23:59:59.000Z

407

The fraction of double degenerates among DA white dwarfs  

E-Print Network [OSTI]

We present the results of a radial velocity survey designed to measure the fraction of double degenerates among DA white dwarfs. The narrow core of the H-alpha line was observed twice or more for 46 white dwarfs yielding radial velocities accurate to a few km/s. This makes our survey the most sensitive to the detection of double degenerates undertaken to date. We found no new double degenerates in our sample, though H-alpha emission from distant companions is seen in two systems. Two stars known to be double degenerates prior to our observations are included in the analysis. We find a 95% probability that the fraction of double degenerates among DA white dwarfs lies in the range [0.017,0.19].

P. F. L. Maxted; T. R. Marsh

1999-01-20T23:59:59.000Z

408

Single- and double-charge exchange at low pion energies  

SciTech Connect (OSTI)

A review is given of pion single- and double-charge exchange reactions at incident energies of 25 to 65 MeV leading to isobaric analog states, and in the case of double-charge exchange leading to the ground state of the residual nucleus. The crucial role of the higher nuclear transparency at low pion energies for the analysis of the data in terms of single and double scattering is demonstrated. The large effects on double-charge exchange produced by the spatial correlations in nuclear wave functions are evident. The data on 1f{sub 7/2} nuclei at 35 MeV are used to establish the general validity of a shell-model-based two-amplitude model for these transitions. Recent measurements of the energy dependence between 25 and 65 MeV of double-charge exchange cross sections at forward angles are presented and discussed. 33 refs., 19 figs.

Baer, H.W.

1991-01-01T23:59:59.000Z

409

Statics and dynamics of Bose-Einstein condensates in double square well potentials  

SciTech Connect (OSTI)

We treat the behavior of Bose-Einstein condensates in double square well potentials of both equal and different depths. For even depth, symmetry preserving solutions to the relevant nonlinear Schroedinger equation are known, just as in the linear limit. When the nonlinearity is strong enough, symmetry breaking solutions also exist, side by side with the symmetric one. Interestingly, solutions almost entirely localized in one of the wells are known as an extreme case. Here we outline a method for obtaining all these solutions for repulsive interactions. The bifurcation point at which, for critical nonlinearity, the asymmetric solutions branch off from the symmetry preserving ones is found analytically. We also find this bifurcation point and treat the solutions generally via a Josephson junction model. When the confining potential is in the form of two wells of different depth, interesting phenomena appear. This is true of both the occurrence of the bifurcation point for the static solutions and also of the dynamics of phase and amplitude varying solutions. Again a generalization of the Josephson model proves useful. The stability of solutions is treated briefly.

Infeld, E. [Soltan Institute for Nuclear Studies, Hoza 69, PL-00-681 Warsaw (Poland); Zin, P. [Institute for Theoretical Physics, Warsaw University, Hoza 69, PL-00-681 Warsaw (Poland); Gocalek, J. [Polish Academy of Science, Al. Lotnikow 32/46, 02-668 Warsaw (Poland); Trippenbach, M. [Soltan Institute for Nuclear Studies, Hoza 69, PL-00-681 Warsaw (Poland); Institute for Theoretical Physics, Warsaw University, Hoza 69, PL-00-681 Warsaw (Poland)

2006-08-15T23:59:59.000Z

410

The single-strand DNA binding activity of human PC4 preventsmutagenesis and killing by oxidative DNA damage  

SciTech Connect (OSTI)

Human positive cofactor 4 (PC4) is a transcriptional coactivator with a highly conserved single-strand DNA (ssDNA) binding domain of unknown function. We identified PC4 as a suppressor of the oxidative mutator phenotype of the Escherichia coli fpg mutY mutant and demonstrate that this suppression requires its ssDNA binding activity. Yeast mutants lacking their PC4 ortholog Sub1 are sensitive to hydrogen peroxide and exhibit spontaneous and peroxide induced hypermutability. PC4 expression suppresses the peroxide sensitivity of the yeast sub l{Delta} mutant, suggesting that the human protein has a similar function. A role for yeast and human proteins in DNA repair is suggested by the demonstration that Sub1 acts in a peroxide-resistance pathway involving Rad2 and by the physical interaction of PC4 with the human Rad2 homolog XPG. We show XPG recruits PC4 to a bubble-containing DNA substrate with resulting displacement of XPG and formation of a PC4-DNA complex. We discuss the possible requirement for PC4 in either global or transcription-coupled repair of oxidative DNA damage to mediate the release of XPG bound to its substrate.

Wang, Jen-Yeu; Sarker, Altaf Hossain; Cooper, Priscilla K.; Volkert, Michael R.

2004-02-01T23:59:59.000Z

411

Breaking Down Enzymes' Role in Biofuel Production | U.S. DOE Office of  

Office of Science (SC) Website

Breaking Down Enzymes' Role in Biofuel Production Breaking Down Enzymes' Role in Biofuel Production Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » February 2013 Breaking Down Enzymes' Role in Biofuel Production Molecular structures provide insights into biomass deconstruction. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

412

Record-breaking year for patents | Y-12 National Security Complex  

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

Record-breaking year for ... Record-breaking year for ... Record-breaking year for patents Posted: February 11, 2013 - 2:57pm | Y-12 Report | Volume 9, Issue 2 | 2013 Fiscal 2012 was a fruitful year for innovative research and development at the Y-12 National Security Complex. Site inventors were issued an unprecedented 11 patents. Technologies and processes from many of Y-12's latest patents, like those from previous years, can extend beyond the Nuclear Security Enterprise into diverse areas of private industry. One technology, the measurement system Extrans, determines how much water permeates a material. At Y-12 this measuring method can protect moisture-sensitive material from corroding. In the food or pharmaceutical industry, however, Extrans could test product packaging to ensure that no

413

Breaking a Cycle-Free Lifestyle for Earth Day | Department of Energy  

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

Breaking a Cycle-Free Lifestyle for Earth Day Breaking a Cycle-Free Lifestyle for Earth Day Breaking a Cycle-Free Lifestyle for Earth Day April 12, 2012 - 12:07pm Addthis Elizabeth Spencer Communicator, National Renewable Energy Laboratory Earth Day is just around the corner! And while it might not be a major day for most people, I still think it's kind of fun. I think every special day is an excuse to do something you normally wouldn't! (And, speaking of little somethings, the Energy Efficiency and Renewable Energy website is going to have a small page up to commemorate Earth Day this year. Look for that next week.) This Earth Day, I'm buying a new bicycle! Now, before I start, let me get this out of the way: Bikes and I have not historically gotten along. When I was a young girl, I was so thrilled to

414

Breaking a Cycle-Free Lifestyle for Earth Day | Department of Energy  

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

Breaking a Cycle-Free Lifestyle for Earth Day Breaking a Cycle-Free Lifestyle for Earth Day Breaking a Cycle-Free Lifestyle for Earth Day April 12, 2012 - 12:07pm Addthis Elizabeth Spencer Communicator, National Renewable Energy Laboratory Earth Day is just around the corner! And while it might not be a major day for most people, I still think it's kind of fun. I think every special day is an excuse to do something you normally wouldn't! (And, speaking of little somethings, the Energy Efficiency and Renewable Energy website is going to have a small page up to commemorate Earth Day this year. Look for that next week.) This Earth Day, I'm buying a new bicycle! Now, before I start, let me get this out of the way: Bikes and I have not historically gotten along. When I was a young girl, I was so thrilled to

415

DuPont Technology Breaks Away From Glass | Department of Energy  

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

DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass April 22, 2010 - 4:20pm Addthis Delaware-based DuPont is working to develop ultra-thin moisture protective films for photovoltaic panels - so thin they're about 1,000 times thinner than a human hair. DuPont is working on new photovoltaic technology that will let manufacturers of copper indium gallium selenide, or CIGS, solar cells and organic light emitting diodes, or OLED, displays protect products with thin layers of ceramic and polymer material instead of glass. These ultra-thin protective films could help prevent deterioration from moisture. Because of their potential to reduce the cost of producing solar energy, "thin-film PV modules are projected to be the fastest-growing segment of

416

Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Facility |  

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

Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Facility Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Facility August 13, 2013 - 10:54am Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on President Obama's Climate Action Plan, which calls for steady, responsible steps to reduce carbon pollution, the Energy Department today broke ground on the nation's largest federally-owned wind project at the Pantex Plant in Amarillo, Texas. Once completed, this five-turbine 11.5 megawatt project will power more than 60 percent of the plant with clean, renewable wind energy and reduce carbon emissions by over 35,000 metric tons per year - equivalent to taking 7,200 cars off the road. The Pantex Plant is the primary site for the assembly, disassembly,

417

Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Facility |  

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

Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Facility Largest Federally-Owned Wind Farm Breaks Ground at U.S. Weapons Facility August 13, 2013 - 10:54am Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on President Obama's Climate Action Plan, which calls for steady, responsible steps to reduce carbon pollution, the Energy Department today broke ground on the nation's largest federally-owned wind project at the Pantex Plant in Amarillo, Texas. Once completed, this five-turbine 11.5 megawatt project will power more than 60 percent of the plant with clean, renewable wind energy and reduce carbon emissions by over 35,000 metric tons per year - equivalent to taking 7,200 cars off the road. The Pantex Plant is the primary site for the assembly, disassembly,

418

Breaking Up (Hydrogen) No Longer As Hard To Do | Department of Energy  

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

Breaking Up (Hydrogen) No Longer As Hard To Do Breaking Up (Hydrogen) No Longer As Hard To Do Breaking Up (Hydrogen) No Longer As Hard To Do December 29, 2011 - 1:12pm Addthis Researchers at Argonne National Lab have recently developed a process to improve the efficiency of producing hydrogen to run cars such as this prototype, which was developed at the Oakridge National Lab. | Photo courtesy of Oak Ridge National Laboratory. Researchers at Argonne National Lab have recently developed a process to improve the efficiency of producing hydrogen to run cars such as this prototype, which was developed at the Oakridge National Lab. | Photo courtesy of Oak Ridge National Laboratory. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What does this project do? Researchers have new insight into producing pure hydrogen -- a

419

DuPont Technology Breaks Away From Glass | Department of Energy  

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

DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass DuPont Technology Breaks Away From Glass April 22, 2010 - 4:20pm Addthis Delaware-based DuPont is working to develop ultra-thin moisture protective films for photovoltaic panels - so thin they're about 1,000 times thinner than a human hair. DuPont is working on new photovoltaic technology that will let manufacturers of copper indium gallium selenide, or CIGS, solar cells and organic light emitting diodes, or OLED, displays protect products with thin layers of ceramic and polymer material instead of glass. These ultra-thin protective films could help prevent deterioration from moisture. Because of their potential to reduce the cost of producing solar energy, "thin-film PV modules are projected to be the fastest-growing segment of

420

Breaking Up (Hydrogen) No Longer As Hard To Do | Department of Energy  

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

Breaking Up (Hydrogen) No Longer As Hard To Do Breaking Up (Hydrogen) No Longer As Hard To Do Breaking Up (Hydrogen) No Longer As Hard To Do December 29, 2011 - 1:12pm Addthis Researchers at Argonne National Lab have recently developed a process to improve the efficiency of producing hydrogen to run cars such as this prototype, which was developed at the Oakridge National Lab. | Photo courtesy of Oak Ridge National Laboratory. Researchers at Argonne National Lab have recently developed a process to improve the efficiency of producing hydrogen to run cars such as this prototype, which was developed at the Oakridge National Lab. | Photo courtesy of Oak Ridge National Laboratory. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What does this project do? Researchers have new insight into producing pure hydrogen -- a

Note: This page contains sample records for the topic "double strand breaks" 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

Small break LOCA analysis of the ONRL high flux isotope reactor  

SciTech Connect (OSTI)

A digital simulation program, HFIRSYS, was developed using MMS to analyze small break loss of coolant events in the ORNL High Flux Isotope Reactor. The code evaluates the response of the primary reactor system including automatic controls actions resulting from breaks in auxiliary piping connected to the primary. The primary output of the code is the margin to the onset of nucleate boiling expressed as a ratio of heat flux which would cause boiling to the current hot channel heat flux. A description of the model, validation results and a sample transient are presented.

Wilson, T.L. Jr.; Cook, D.H.; Sozer, A.

1988-01-01T23:59:59.000Z

422

Isospin Symmetry Breaking and Octet Baryon Masses due to Their Mixing with Decuplet Baryons  

E-Print Network [OSTI]

We study the isospin symmetry breaking and mass splittings of the eight lowest-lying baryons. We consider three kinds of baryon mass terms, including the bare mass term, the electromagnetic terms and the spontaneous chiral symmetry breaking terms. We include the mixing term between flavor-octet and flavor-decuplet baryons. This assumes that the lowest-lying Sigma and Xi baryons contain a few decuplet components and so are not purely flavor-octet. We achieve a good fitting that the difference between every fitted mass and its experimental value is less than 0.2 MeV.

Hua-Xing Chen

2013-12-05T23:59:59.000Z

423

First results on neutrinoless double beta decay of Te-130 with the calorimetric cuoricino experiment  

E-Print Network [OSTI]

Evidence for Neutrinoless Double Beta Decay” arXiv:hep-on “Evidence for neutrinoless double beta decay”- arXiv:hep-Results on Neutrinoless Double Beta Decay of 130 Te with the

2003-01-01T23:59:59.000Z

424

Half-lives of Double $\\beta ^+$-decay with Two Neutrinos  

E-Print Network [OSTI]

Nuclear double $\\beta ^-$-decays with two neutrinos were observed for many years and a systematic law describing the relation between their half-lives and decay energies was also proposed recently [Phys. Rev. C89, 064603 (2014)]. However, double $\\beta ^+$-decay ($\\beta ^+\\beta^+)$ with emission of both two positrons and two neutrinos has not been observed up to date. In this article, we perform a systematic analysis on the candidates of double $\\beta ^+$-decay, based on the 2012 nuclear mass table. Eight nuclei are found to be the good candidates for double $\\beta ^+$-decay and their half-lives are predicted according to the generalization of the systematic law to double $\\beta ^+$-decay. As far as we know, there is no theoretical result on double $\\beta ^+$-decay of nucleus $^{154}Dy$ and our result is the first prediction on this nucleus. This is also the first complete research on eight double $\\beta ^+$-decay candidates based on the available data of nuclear masses. It is expected that the calculated hal...

Ren, Yuejiao

2015-01-01T23:59:59.000Z

425

Experimental research of double beta decay of atomic nuclei  

E-Print Network [OSTI]

Results of several double beta decay experiments, performed with the help of low background crystal scintillators, are presented. In particular, the half-life value of the two-neutrino double beta decay of 116-Cd has been measured as 2.9 10^{19} yr, and the new half-life limit on the neutrinoless double beta decay of 116-Cd has been established as >1.7 10^{23} yr at 90%, which corresponds to a restriction on the neutrino mass <1.7 eV. New half-life bounds on the level of 10^{17}-10^{21} yr were set for double beta processes in 64-Zn, 70-Zn, 106-Cd, 108-Cd, 114-Cd, 136-Ce, 138-Ce, 142-Ce, 160-Gd, 180-W, and 186-W by using low-background CdWO4, GSO, and ZnWO4 crystal scintillators. The claim of discovery of the neutrinoless double beta decay of 76-Ge [Mod. Phys. Lett. A 16 (2001) 2409] was analyzed. The demands of the future high sensitivity double beta decay experiments, aiming to observe the neutrinoless double beta decay or to advance restrictions on the neutrino mass to < 0.01 eV, were considered. Requirements for their sensitivity and discovery potential were formulated. Two projects of double beta experiments with a sensitivity on the level of 10^{26}-10^{27} yr (CAMEO and CARVEL projects) were discussed. Scintillation properties and radioactive contamination of CaWO4, ZnWO4, CdWO4, PbWO4, GSO(Ce), CeF3, yttrium-aluminum garnet doped with neodymium (YAG:Nd) crystal scintillators were studied. Applicability of these scintillators to search for double beta decay was discussed.

F. A. Danevich

2011-12-26T23:59:59.000Z

426

Man-made marine debris and sea turtle strandings on beaches of the upper Texas and southwestern Louisiana coasts, June 1987 through September 1989. Technical memo  

SciTech Connect (OSTI)

The upper Texas and southwestern Louisiana coastlines were divided into six sampling zones to survey the amounts, types and rates of accumulation of man-made marine debris, the number of sea turtle strandings, the incidence of sea turtle entanglements in marine debris and the incidence of ingestion of such debris by sea turtles. From June 1987 through September 1989, 473 sample plots were examined for marine debris. Significant differences were detected in mean number of debris items per 100 sq m of beach sampled by year, zone and month. Significant differences in mean weight of debris items per 100 sq m of beach sampled were detected by month and zone. Both number and weights (per 100 sq m) of debris were lowest in the winter months. Number per 100 sq m was greatest in August while weight per 100 sq m peaked in May. Tar balls and plastic items were the most frequently encountered marine debris items. Wooden items had the highest average weights while tar balls and polystyrene foam were the lightest items collected. A total of 171 sea turtles stranded on the surveyed beaches during the study. Of 26 gastrointestinal tracts examined, 16 had ingested some form of man-made debris. Six turtles were entangled in man-made debris and 9 were live stranded.

Duronslet, M.J.; Revera, D.B.; Stanley, K.M.

1991-02-01T23:59:59.000Z

427

Superconvergence of period doubling cascade in trapezoid maps  

E-Print Network [OSTI]

In the symmetric and the asymmetric trapezoid maps, as a slope of the trapezoid is increased, the period doubling cascade occurs and the symbolic sequence of periodic points is the Metropolis-Stein-Stein sequence and the convergence of the onset point of the period 2^m solution to the accumulation point is exponentially fast. We reported these results previously. In this paper, we give the detailed description of the proof on the results. Further, we study the period doubling cascade starting from period p solution and show the superconvergence of the period doubling cascade.

T. Uezu

2000-01-12T23:59:59.000Z

428

Photo-double-ionization of the nitrogen molecule  

Science Journals Connector (OSTI)

The triple differential cross sections of the photo-double-ionization of the nitrogen molecule to the X 1?+g and a3?u N22+ states have been measured at about 20 eV above their respective ionization thresholds in the equal energy sharing kinematics and calculated using a model which makes use of correlated two-center double continuum wave functions. The comparison of the results with those obtained by the Gaussian parametrization method applied in the past with success to heliumlike targets shows the influence of the molecular nature of the N2 target in the photo-double-ionization.

P. Bolognesi; B. Joulakian; A. A. Bulychev; O. Chuluunbaatar; L. Avaldi

2014-05-07T23:59:59.000Z

429

Live Cell Imaging and in situ analysis of cellular responses to DNA doublestrand  

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

Live Cell Imaging and in situ analysis of cellular responses to DNA double- Live Cell Imaging and in situ analysis of cellular responses to DNA double- strand breaks in mammalian cells. David J. Chen Division of Molecular Radiation Biology, Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas TX 75390 The integrity of the human genome is constantly threatened by internal as well as external factors with the propensity to cause DNA damage. Of the various types of DNA damage that can occur within the mammalian cell nucleus, the DNA double strand break (DSB) is perhaps the most dangerous. Estimates put the number of endogenous DSBs anywhere between 10-100 per nucleus per day. A direct link between DSBs and cancer has been surmised by researchers based upon the fact that many cancer-predisposition

430

E-Print Network 3.0 - aligned double-walled carbon Sample Search...  

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

Summary: , and H. M. Cheng. Polarized raman analysis of aligned double- walled carbon nanotubes. Physical Review B... Nonlinear Oscillations of a Double-Walled Carbon Nanotube...

431

Neutrinoless double beta decay in deformed nuclei: its implications in particle and nuclear physics .  

E-Print Network [OSTI]

??In my thesis, we calculated the Nuclear Matrix Elements (NME) for neutrinoless double beta decay (0??? decay). Neutrinoless double beta decay is a rare nuclear… (more)

Fang, DongLiang

2011-01-01T23:59:59.000Z

432

SciTech Connect: What can we learn from neutrinoless double beta...  

Office of Scientific and Technical Information (OSTI)

What can we learn from neutrinoless double beta decay experiments? Citation Details In-Document Search Title: What can we learn from neutrinoless double beta decay experiments?...

433

A Search for Neutrinoless Double-Beta Decay with EXO-200 .  

E-Print Network [OSTI]

??This work presents a search for neutrinoless double beta decay of 136Xe using data from the EXO-200 detector collected between 2011 and 2012. Neutrinoless double… (more)

Slutsky, Simon

2013-01-01T23:59:59.000Z

434

The Sensitivity of MCF10A Breast Epithelial Cells to Alkylating Drugs is Enhanced by the Inhibition of O6-Methylguanine-DNA Methyltransferase Transcription with a Synthetic Double Strand DNA Oligonucleotide  

Science Journals Connector (OSTI)

Cytoxicity of alkylating chemotherapeutic drugs is affected by the cellular content of the enzyme O6-methylguanine-DNA methyl transferase (MGMT). Since high levels ... of the enzyme confer the efficient repair of...

Laura Mariani; Antonella Piccirilli; Lorenzo Citti…

2002-06-01T23:59:59.000Z

435

Mass Transfer between Double White Dwarfs  

E-Print Network [OSTI]

Three periodically variable stars have recently been discovered (V407 Vul, P=9.5 min; ES Cet, P=10.3 min; RX J0806.3+1527, P=5.3 min) with properties that suggest that their photometric periods are also their orbital periods, making them the most compact binary stars known. If true, this might indicate that close, detached, double white dwarfs are able to survive the onset of mass transfer caused by gravitational wave radiation and emerge as the semi-detached, hydrogen-deficient stars known as the AM CVn stars. The accreting white dwarfs in such systems are large compared to the orbital separations. This has two effects: first it makes it likely that the mass transfer stream can hit the accretor directly, and second it causes a loss of angular momentum from the orbit which can destabilise the mass transfer unless the angular momentum lost to the accretor can be transferred back to the orbit. The effect of the destabilisation is to reduce the number of systems which survive mass transfer by as much as one hundred-fold. In this paper we analyse this destabilisation and the stabilising effect of a dissipative torque between the accretor and the binary orbit. We obtain analytic criteria for the stability of both disc-fed and direct impact accretion, and carry out numerical integrations to assess the importance of secondary effects, the chief one being that otherwise stable systems can exceed the Eddington accretion rate. We show that to have any effect upon survival rates, the synchronising torque must act on a timescale of order 1000 years or less. If synchronisation torques are this strong, then they will play a significant role in the spin rates of white dwarfs in cataclysmic variable stars as well.

T. R. Marsh; G. Nelemans; D. Steeghs

2003-12-22T23:59:59.000Z

436

A Statistical Model of the Inhomogeneous Corona Constrained by Triple-Filter Measurements of Elementary Loop Strands with TRACE  

Science Journals Connector (OSTI)

Here we present the first quantitative model of the inhomogeneous solar corona, which we call the composite and elementary loops in a thermally inhomogeneous corona (CELTIC) model. We develop a self-consistent statistical model that quantifies the distributions of physical parameters, i.e., the distributions of loop widths, N(w,Te), electron densities, N(ne,Te), electron temperatures, N(Te), and statistical correlations between them. The parameterized distributions are constrained by the observed triple-filter fluxes of the EUV corona measured at some 18,000 loop positions with TRACE in the temperature range of Te ? 0.7-2.7 MK, as well as by the individual loop parameters (w,ne,Te) measured at these positions in ?240 detected loops, mostly sampled in active regions. The CELTIC model is inverted from the TRACE data and reproduces both the fluxes of the composite (active region and quiet Sun) background corona and the distributions of loop parameters in a self-consistent way. The best-fit values constrain a statistical correlation between the density and temperature, i.e., ne ? Te?, with ? = 0.9 ± 0.6, and between the loop width and temperature, i.e., w ? Te?, with ? = 1.3 ± 0.7, which can be related to the thermal pressure in a regime with a high plasma-? parameter. A possible explanation is a heating process located in the lower transition region or the upper chromosphere (e.g., as reproduced in the recent MHD simulations of Gudiksen and Nordlund), which produces sufficiently high electron densities, high plasma-? parameters, and thermally homogeneous loop cross sections as observed in elementary loop strands.

Markus J. Aschwanden; Richard W. Nightingale; Paul Boerner

2007-01-01T23:59:59.000Z

437

Application of a Downhole Flowmeter to Detecting Casing Breaks in a Geothermal Well  

SciTech Connect (OSTI)

The downhole flowmeter logging system for high temperature geothermal wells developed at Wairakei, New Zealand, is proving to be an invaluable tool for use during workovers to repair or reinstate problem wells. This contribution describes a straightforward example of identifying breaks in plain casing near the top of a productive well.

Syms, Margot C.; Syms, Peter H.; Bixley, Paul F.

1980-12-16T23:59:59.000Z

438

$U_A(1)$ Symmetry Breaking and the Scalar Sector of QCD  

E-Print Network [OSTI]

It is shown that most of the unusual properties of the lowest lying scalar (and pseudoscalar) mesons can be understood, at the qualitative and quantitative level, on the basis of the breakdown of the $U_A(1)$ symmetry coupled to the vacuum expectation values of scalars by the spontaneous breaking of chiral symmetry.

Mauro Napsuciale; Simon Rodriguez

2002-04-12T23:59:59.000Z

439

Breaking the Deadlock: The 2000 Election, the Constitution and the Courts  

Science Journals Connector (OSTI)

......2002. L aw, Probability and Risk (2002) 1, 53-65 Breaking...given to the literature in political science and economics. The...it to the White House. The political manoeuvring, especially in...their liability capped at their insurance coverage). See also E ILPERIN......

Joseph L. Gastwirth

2002-07-01T23:59:59.000Z

440

A BreakEven Formulation for Evaluating Branch Predictor Energy Efficiency #  

E-Print Network [OSTI]

A Break­Even Formulation for Evaluating Branch Predictor Energy Efficiency # Michele Co, Dee A demonstrated that a better branch pre­ dictor can increase the energy­efficiency of the system, even if the new a simple, effective metric for eval­ uating the tradeoff between processor energy­efficiency and branch

Co, Michele

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


441

Observation of the Ankle and Evidence for a High-Energy Break in the Cosmic Ray  

E-Print Network [OSTI]

Observation of the Ankle and Evidence for a High-Energy Break in the Cosmic Ray Spectrum R known as "the ankle" near 3 Ã? 1018 eV, and strong evidence for a supression near 6 Ã? 1019 eV. 1

442

Role of global warming on the statistics of record-breaking temperatures S. Redner1,  

E-Print Network [OSTI]

Role of global warming on the statistics of record-breaking temperatures S. Redner1, * and Mark R in Philadelphia, as a function of the number of years of observation. We then consider the case of global warming question arises: is global warming the cause of such heat waves or are they merely statistical fluctuations

Redner, Sidney

443

Electronic Heating at High Bias in Atomic-Scale Au Break Junctions Ruoyu Chen,1  

E-Print Network [OSTI]

, U.S.A. Heating in nanoscale systems driven out of equilibrium is of fundamental importance, has O-10 Electronic Heating at High Bias in Atomic-Scale Au Break Junctions Ruoyu Chen,1, Texas, U.S.A. 2 Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005

444

Symmetry Breaking and Branching Constraints C. Mears, M. Garcia de la Banda, M. Wallace, B. Demoen  

E-Print Network [OSTI]

Background We begin with some preliminary definitions. Through- out this paper, a CSP is defined as a triple a CSP's solutions into equivalence classes. A symmetry breaking method is correct if it finds at least to the CSP). One way to dynamically exclude symmetric parts of

Aloul, Fadi

445

American Institute of Aeronautics and Astronautics Sharp Interface LES of Breaking Waves by an Interface  

E-Print Network [OSTI]

. Several numerical tests are conducted in order to validate the code. Wave breaking around a wedge, efficient and robust CFD tool with high order numerical schemes, simple code modules and structures-set based ghost fluid method is adopted for sharp interface treatment and a volume-of-fluid method

Yang, Jianming

446

Winery waste makes fuel Electricity, bacteria break organics in wastewater into hydrogen gas  

E-Print Network [OSTI]

MSNBC.com Winery waste makes fuel Electricity, bacteria break organics in wastewater into hydrogen method for generating hydrogen fuel from wastewater is now operating at a California winery material in the wastewater into hydrogen gas. There is a lot more energy locked in the wastewater than

447

Bubble entrainment by breaking waves and their influence on optical scattering in the upper ocean  

E-Print Network [OSTI]

Bubble entrainment by breaking waves and their influence on optical scattering in the upper ocean's surface inject bubbles and turbulence into the water column. During periods of rough weather the scales and the turbulent transport of bubbles to depth. Depending on their concentrations and size distribution

Stramski, Dariusz

448

Bubble-induced dissipation under unsteady breaking waves M. Derakhti1,2  

E-Print Network [OSTI]

Bubble-induced dissipation under unsteady breaking waves M. Derakhti1,2 and J. T. Kirby1 1 Center in bubbles that rapidly evolves into a distribution of bubble sizes, which interacts with fluid turbulence and organized motions. The liquid-bubble interaction, especially in the complex two-phase bubbly flow under

Kirby, James T.

449

Mathematical model and simulation of gas ow through a porous medium in high breaking capacity  

E-Print Network [OSTI]

Mathematical model and simulation of gas #29;ow through a porous medium in high breaking capacity, France. Abstract. A one-dimensional model is introduced to describe the gas #29;ow and the heat transfer model coupled with a porous medium model taking into account the mechanical interaction gas-silica sand

Sart, Remi

450

DUF6 Project Doubles Production in 2013 | Department of Energy  

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

DUF6 Project Doubles Production in 2013 DUF6 Project Doubles Production in 2013 DUF6 Project Doubles Production in 2013 November 26, 2013 - 12:00pm Addthis LEXINGTON, Ky. - The conversion plants at EM's Paducah and Portsmouth sites surpassed a fiscal year 2013 goal by converting 13,679 metric tons of depleted uranium hexafluoride (DUF6), more than doubling production a year earlier. EM's Portsmouth Paducah Project Office (PPPO) and contractor Babcock & Wilcox Conversion Services LLC (BWCS) began operations in 2011 to convert the nation's 800,000-metric-ton inventory of DUF6 to more benign forms for sale, ultimate disposal or long-term storage. "Since 2011, we have been ramping up production to determine and achieve the safe, sustainable operating rate of the plants," said George E.

451

Non-Double-Couple Microearthquakes At Long Valley Caldera, California,  

Open Energy Info (EERE)

Non-Double-Couple Microearthquakes At Long Valley Caldera, California, Non-Double-Couple Microearthquakes At Long Valley Caldera, California, Provide Evidence For Hydraulic Fracturing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Non-Double-Couple Microearthquakes At Long Valley Caldera, California, Provide Evidence For Hydraulic Fracturing Details Activities (1) Areas (1) Regions (0) Abstract: Most of 26 small (0.4<~M<~3.1) microearthquakes at Long Valley caldera in mid-1997, analyzed using data from a dense temporary network of 69 digital three-component seismometers, have significantly non-double-couple focal mechanisms, inconsistent with simple shear faulting. We determined their mechanisms by inverting P- and S-wave polarities and amplitude ratios using linear-programming methods, and

452

DUF6 Project Doubles Production in 2013 | Department of Energy  

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

DUF6 Project Doubles Production in 2013 DUF6 Project Doubles Production in 2013 DUF6 Project Doubles Production in 2013 November 26, 2013 - 12:00pm Addthis LEXINGTON, Ky. - The conversion plants at EM's Paducah and Portsmouth sites surpassed a fiscal year 2013 goal by converting 13,679 metric tons of depleted uranium hexafluoride (DUF6), more than doubling production a year earlier. EM's Portsmouth Paducah Project Office (PPPO) and contractor Babcock & Wilcox Conversion Services LLC (BWCS) began operations in 2011 to convert the nation's 800,000-metric-ton inventory of DUF6 to more benign forms for sale, ultimate disposal or long-term storage. "Since 2011, we have been ramping up production to determine and achieve the safe, sustainable operating rate of the plants," said George E.

453

Kinetic Alfven double layer formed by electron viscosity  

SciTech Connect (OSTI)

The effect of the electron viscosity on the kinetic Alfven solitary wave is investigated. It is found that small electron viscosity changes the electron motion along the magnetic field producing a boundary layer, and thus that in a low beta electron-ion plasma({beta} Much-Less-Than m{sub e}/m{sub i}), an obliquely propagating kinetic solitary Alfven wave can become a double layer. This double layer can exist in the sub-Alfvenic and super-Alfvenic regimes. The length scale of density drop for this double layer is on the order of that of the conventional kinetic solitary Alfven wave, and thus this double layer can accelerate electrons on a very short length scale.

Woo, M. H.; Ryu, C.-M. [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Choi, C. R. [Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305-701 (Korea, Republic of)

2012-07-15T23:59:59.000Z

454

Superconductivity in Bundles of Double-Wall Carbon Nanotubes  

E-Print Network [OSTI]

We present electrical and thermal specific heat measurements that show superconductivity in double-wall carbon nanotube (DWCNT) bundles. Clear evidence, comprising a resistance drop as a function of temperature, magnetoresistance ...

Shi, Wu

455

Characterization of double walled carbon nanotubes-polyvinylidene fluoride nanocomposites  

E-Print Network [OSTI]

One of the main objectives of this thesis is to disperse double-walled carbon nanotubes (DWNT) in a polyvinylidene fluoride (PVDF) matrix, and to characterize the resulting composite using electrical, thermal, and mechanical characterization...

Almasri, Atheer Mohammad

2007-04-25T23:59:59.000Z

456

Student's difficulties with the theory of double-slit interference  

E-Print Network [OSTI]

developed abstract thinking abilities [3, 4]. The remainder are unable to learn physics by listening arrangement for theoretical treatment of double-slit interference. Figure 2. The mechanical device

Planin�iè, Gorazd

457

Young’s double-slit interference experiment with electrons  

Science Journals Connector (OSTI)

In this short Note we report a method for producing samples containing two nano-sized slits suitable for demonstrating to undergraduate and graduate students the double-slit electron interference experiment in a conventional transmission electron microscope.

S. Frabboni; G. C. Gazzadi; G. Pozzi

2007-01-01T23:59:59.000Z

458

Comment on "Evidence for Neutrinoless Double Beta Decay"  

E-Print Network [OSTI]

We comment on the recent claim for the experimental observation of neutrinoless double-beta decay. We discuss several limitations in the analysis provided in that paper and conclude that there is no basis for the presented claim.

C. E. Aalseth; F. T. Avignone III; A. Barabash; F. Boehm; R. L. Brodzinski; J. I. Collar; P. J. Doe; H. Ejiri; S. R. Elliott; E. Fiorini; R. J. Gaitskell; G. Gratta; R. Hazama; K. Kazkaz; G. S. King III; R. T. Kouzes; H. S. Miley; M. K. Moe; A. Morales; J. Morales; A. Piepke; R. G. H. Robertson; W. Tornow; P. Vogel; R. A. Warner; J. F. Wilkerson

2002-05-22T23:59:59.000Z

459

Double Auction experiments and their relevance for emissions trading  

Science Journals Connector (OSTI)

In this article, we discuss selected methodological problems from previous Double Auction (DA) experiments and analyze the two following questions experimentally. Firstly, does the framing of the decision situati...

Bodo Sturm

2008-01-01T23:59:59.000Z

460

Glass Does a Double-Take | Advanced Photon Source  

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

| 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Glass Does a Double-Take APRIL 4, 2008 Bookmark and Share Predicted phase diagram as a...

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


461

Double beta decay experiments: beginning of a new era  

E-Print Network [OSTI]

The review of current experiments on search and studying of double beta decay processes is done. Results of the most sensitive experiments are discussed and values of modern limits on effective Majorana neutrino mass ($) are given. New results on two neutrino double beta decay are presented. The special attention is given to new current experiments with mass of studied isotopes more than 100 kg, EXO--200 and KamLAND--Zen. These experiments open a new era in research of double beta decay. In the second part of the review prospects of search for neutrinoless double beta decay in new experiments with sensitivity to $$ at the level of $\\sim 0.01-0.1$ eV are discussed. Parameters and characteristics of the most perspective projects (CUORE, GERDA, MAJORANA, SuperNEMO, EXO, KamLAND--Zen, SNO+) are given.

A. S. Barabash

2012-09-19T23:59:59.000Z

462

A high-order adaptive time-stepping TVD solver for Boussinesq modeling of breaking waves and coastal inundation  

E-Print Network [OSTI]

A high-order adaptive time-stepping TVD solver for Boussinesq modeling of breaking waves December 2011 Available online 17 December 2011 Keywords: Boussinesq wave model TVD Riemann solver Breaking for the fully nonlinear Boussinesq model of Chen (2006), extended to include moving reference level

Kirby, James T.

463

A Spar Buoy for High-Frequency Wave Measurements and Detection of Wave Breaking in the Open Ocean  

Science Journals Connector (OSTI)

Waves and wave breaking play a significant role in the air–sea exchanges of momentum, sea spray aerosols, and trace gases such as CO2, but few direct measurements of wave breaking have been obtained in the open ocean (far from the coast). This ...

Robin W. Pascal; Margaret J. Yelland; Meric A. Srokosz; Bengamin I. Moat; Edward M. Waugh; Daniel H. Comben; Alex G. Cansdale; Mark C. Hartman; David G. H. Coles; Ping Chang Hsueh; Timothy G. Leighton

2011-04-01T23:59:59.000Z

464

Hydrogen Bond Networks: Structure and Evolution after Hydrogen Bond Breaking John B. Asbury, Tobias Steinel, and M. D. Fayer*  

E-Print Network [OSTI]

Hydrogen Bond Networks: Structure and Evolution after Hydrogen Bond Breaking John B. Asbury, TobiasVed: September 1, 2003; In Final Form: December 18, 2003 The nature of hydrogen bonding networks following hydrogen bond breaking is investigated using vibrational echo correlation spectroscopy of the hydroxyl

Fayer, Michael D.

465

Muon-Induced Backgrounds in Double Chooz Emily Conover  

E-Print Network [OSTI]

to scintillator 8 MeV n capture energy, 30µs backgrounds due to muons remain E¯e = Ee+ + 10-40keV En + 1.8MeMuon-Induced Backgrounds in Double Chooz Emily Conover University of Chicago Second Thesis and Stopped Muons 9Li and 8He 3. Double Chooz Results 4. Conclusions Timeline/Future work Emily Conover (Univ

466

Band Tunneling through Double Barrier in Bilayer Graphene  

E-Print Network [OSTI]

By taking into account the full four band energy spectrum, we calculate the transmission probability and conductance of electrons across symmetric and asymmetric double potential barrier with a confined interlayer potential difference in bilayer graphene. For energies less than the interlayer coupling \\gamma_{1}, E \\gamma_{1}, we obtain four possible ways for transmission resulting from the two propagating modes. We compute the associated transmission probabilities as well as their contribution to the conductance, study the effect of the double barrier geometry.

Hasan A. Alshehab; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

2014-01-20T23:59:59.000Z

467

Dynamics of microcavity exciton polaritons in a Josephson double dimer  

Science Journals Connector (OSTI)

We study the dynamics of exciton polaritons in a double-well configuration. The system consists of two weakly coupled Bose-Josephson junctions, each corresponding to a different circular polarization of the polaritons, forming a Josephson double dimer. We show that the Josephson oscillation between the wells is strongly coupled to the polarization rotation and that, consequently, Josephson excitation is periodically exchanged between the two polarizations. Linearized analysis agrees well with numerical simulations using typical experimental parameters.

Christine Khripkov; Carlo Piermarocchi; Amichay Vardi

2013-12-10T23:59:59.000Z

468

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

We assess how well next generation neutrinoless double beta decay and normal neutrino beta decay experiments can answer four fundamental questions. 1) If neutrinoless double beta decay searches do not detect a signal, and if the spectrum is known to be inverted hierarchy, can we conclude that neutrinos are Dirac particles? 2) If neutrinoless double beta decay searches are negative and a next generation ordinary beta decay experiment detects the neutrino mass scale, can we conclude that neutrinos are Dirac particles? 3) If neutrinoless double beta decay is observed with a large neutrino mass element, what is the total mass in neutrinos? 4) If neutrinoless double beta decay is observed but next generation beta decay searches for a neutrino mass only set a mass upper limit, can we establish whether the mass hierarchy is normal or inverted? We base our answers on the expected performance of next generation neutrinoless double beta decay experiments and on simulations of the accuracy of calculations of nuclear matrix elements.

John N. Bahcall; Hitoshi Murayama; Carlos Pena-Garay

2004-03-15T23:59:59.000Z

469

Heat induces gene amplification in cancer cells  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer This study discovered that heat exposure (hyperthermia) results in gene amplification in cancer cells. Black-Right-Pointing-Pointer Hyperthermia induces DNA double strand breaks. Black-Right-Pointing-Pointer DNA double strand breaks are considered to be required for the initiation of gene amplification. Black-Right-Pointing-Pointer The underlying mechanism of heat-induced gene amplification is generation of DNA double strand breaks. -- Abstract: Background: Hyperthermia plays an important role in cancer therapy. However, as with radiation, it can cause DNA damage and therefore genetic instability. We studied whether hyperthermia can induce gene amplification in cancer cells and explored potential underlying molecular mechanisms. Materials and methods: (1) Hyperthermia: HCT116 colon cancer cells received water-submerged heating treatment at 42 or 44 Degree-Sign C for 30 min; (2) gene amplification assay using N-(phosphoacetyl)-L-aspartate (PALA) selection of cabamyl-P-synthetase, aspartate transcarbarmylase, dihydro-orotase (cad) gene amplified cells; (3) southern blotting for confirmation of increased cad gene copies in PALA-resistant cells; (4) {gamma}H2AX immunostaining to detect {gamma}H2AX foci as an indication for DNA double strand breaks. Results: (1) Heat exposure at 42 or 44 Degree-Sign C for 30 min induces gene amplification. The frequency of cad gene amplification increased by 2.8 and 6.5 folds respectively; (2) heat exposure at both 42 and 44 Degree-Sign C for 30 min induces DNA double strand breaks in HCT116 cells as shown by {gamma}H2AX immunostaining. Conclusion: This study shows that heat exposure can induce gene amplification in cancer cells, likely through the generation of DNA double strand breaks, which are believed to be required for the initiation of gene amplification. This process may be promoted by heat when cellular proteins that are responsible for checkpoints, DNA replication, DNA repair and telomere functions are denatured. To our knowledge, this is the first study to provide direct evidence of hyperthermia induced gene amplification.

Yan, Bin, E-mail: yanbin@mercyhealth.com [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39213 (United States) [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39213 (United States); Mercy Cancer Center, Mercy Medical Center-North Iowa, Mason City, IA 50401 (United States); Ouyang, Ruoyun [Department of Respiratory Medicine, The Second Xiangya Hospital, Xinagya School of Medicine, Central South University, Changsha 410011 (China)] [Department of Respiratory Medicine, The Second Xiangya Hospital, Xinagya School of Medicine, Central South University, Changsha 410011 (China); Huang, Chenghui [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39213 (United States) [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39213 (United States); Department of Oncology, The Third Xiangya Hospital, Xinagya School of Medicine, Central South University, Changsha 410013 (China); Liu, Franklin [Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710 (United States)] [Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710 (United States); Neill, Daniel [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39213 (United States)] [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39213 (United States); Li, Chuanyuan [Dermatology, Duke University Medical Center, Durham, NC 27710 (United States)] [Dermatology, Duke University Medical Center, Durham, NC 27710 (United States); Dewhirst, Mark [Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710 (United States)] [Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710 (United States)

2012-10-26T23:59:59.000Z

470

Next Generation Neutrinoless Double -Decay Experiments Andreas Piepke, R.G. Hamish Robertson  

E-Print Network [OSTI]

of this ambitious program...". The Long Range Plan further states: "... neutrinoless double beta decay experiments

471

Gravity currents with tailwaters in Boussinesq and non-Boussinesq systems: two-layer shallow-water dam-break solutions and Navier–Stokes simulations  

Science Journals Connector (OSTI)

We consider the dam-break initial stage of propagation of a gravity current of density $$\\rho _{c}$$ ...

M. Ungarish; Z. Borden; E. Meiburg

2014-04-01T23:59:59.000Z

472

Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities  

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

09 09 December 2009 Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities Paul Denholm, Robert M. Margolis, Sean Ong, and Billy Roberts National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-6A2-46909 December 2009 Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities Paul Denholm, Robert M. Margolis, Sean Ong, and Billy Roberts Prepared under Task No. PVD9.1210 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

473

Symmetry-breaking mechanism for the Z4 general-covariant evolution system  

Science Journals Connector (OSTI)

The general-covariant Z4 formalism is further analyzed. The gauge conditions are generalized with a view to numerical relativity applications and the conditions for obtaining strongly hyperbolic evolution systems are given both at the first and the second order levels. A symmetry-breaking mechanism is proposed that allows one, when applied in a partial way, to recover previously proposed strongly hyperbolic formalisms, like the BSSN and the Bona-Massó formulas. When applied in its full form, the symmetry-breaking mechanism allows one to recover the full five-parameter family of first order KST systems. Numerical codes based in the proposed formalisms are tested. A robust stability test is provided by evolving random noise data around Minkowski space-time. A strong field test is provided by the collapse of a periodic background of plane gravitational waves, as described by the Gowdy metric.

C. Bona; T. Ledvinka; C. Palenzuela; M. Žá?ek

2004-03-26T23:59:59.000Z

474

Deformation and break-up of viscoelastic droplets Using Lattice Boltzmann Models  

E-Print Network [OSTI]

We investigate the break-up of Newtonian/viscoelastic droplets in a viscoelastic/Newtonian matrix under the hydrodynamic conditions of a confined shear flow. Our numerical approach is based on a combination of Lattice-Boltzmann models (LBM) and Finite Difference (FD) schemes. LBM are used to model two immiscible fluids with variable viscosity ratio (i.e. the ratio of the droplet to matrix viscosity); FD schemes are used to model viscoelasticity, and the kinetics of the polymers is introduced using constitutive equations for viscoelastic fluids with finitely extensible non-linear elastic dumbbells with Peterlin's closure (FENE-P). We study both strongly and weakly confined cases to highlight the role of matrix and droplet viscoelasticity in changing the droplet dynamics after the startup of a shear flow. Simulations provide easy access to quantities such as droplet deformation and orientation and will be used to quantitatively predict the critical Capillary number at which the droplet breaks, the latter being ...

Gupta, Anupam

2014-01-01T23:59:59.000Z

475

Electroweak Symmetry Breaking and the Higgs Boson: Confronting Theories at Colliders  

E-Print Network [OSTI]

In this review, we discuss methods of parsing direct and indirect information from collider experiments regarding the Higgs boson and describe simple ways in which experimental likelihoods can be consistently reconstructed and interfaced with model predictions in pertinent parameter spaces. Ultimately these methods are used to constrain a five-dimensional parameter space describing a model-independent framework for electroweak symmetry breaking. We review prevalent scenarios for extending the electroweak symmetry breaking sector relative to the Standard Model and emphasize their predictions for nonstandard Higgs phenomenology that could be observed in LHC data if naturalness is realized in particular ways. Specifically we identify how measurements of Higgs couplings can be used to imply the existence of new physics at particular scales within various contexts, highlighting some parameter spaces of interest in order to give examples of how the data surrounding the new state can most effectively be used to constrain specific models of weak scale physics.

Aleksandr Azatov; Jamison Galloway

2012-12-06T23:59:59.000Z

476

Breaking of relativistically intense longitudinal space charge waves: A description using Dawson sheet model  

SciTech Connect (OSTI)

Spatio-temporal evolution of relativistically intense longitudinal space charge waves in a cold homogeneous plasma is studied analytically as well as numerically, as an initial value problem, using Dawson sheet model. It is found that, except for very special initial conditions which generates the well known longitudinal Akhiezer-Polovin mode, for all other initial conditions, the waves break through a novel mechanism called phase mixing at an amplitude well below the Akhiezer-Polovin limit. An immediate consequence of this is, that Akhiezer-Polovin waves break when subjected to arbitrarily small longitudinal perturbations. We demonstrate this by performing extensive numerical simulations. This result may be of direct relevance to ultrashort, ultraintense laser/beam pulse-plasma interaction experiments where relativistically intense waves are routinely excited.

Sengupta, Sudip, E-mail: sudip@ipr.res.in [Institute for Plasma Research, Bhat , Gandhinagar - 382428 (India)

2014-02-11T23:59:59.000Z

477

Double pulse laser induced breakdown spectroscopy; experimental study of  

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

Double pulse laser induced breakdown spectroscopy; experimental study of Double pulse laser induced breakdown spectroscopy; experimental study of lead emission intensity dependence on the wavelengths and sample matrix Title Double pulse laser induced breakdown spectroscopy; experimental study of lead emission intensity dependence on the wavelengths and sample matrix Publication Type Journal Article Year of Publication 2009 Authors Piscitelli, Vincent, Mauro A. Martinez, Alberto J. Fernandez, Jhanis J. Gonzalez, Xianglei Mao, and Richard E. Russo Journal Spectrochimica Acta Part B Volume 64 Issue 2 Pagination 147-154 Date Published 02/2009 Keywords Double pulse LIBS, laser induced breakdown spectroscopy, lead Abstract Lead (Pb) emission intensity (atomic line 405.78 nm) dependence on the sample matrix (metal alloy) was studied by means of collinear double pulse (DP)-laser induced breakdown spectroscopy (LIBS). The measurement of the emission intensity produced by three different wavelength combinations (i.e. I:532 nm-II:1064 nm, I:532 nm-II:532 nm, and I:532 nm-II:355 nm) from three series of standard reference materials showed that the lead atomic line 405.78 nm emission intensity was dependent on the sample matrix for all the combination of wavelengths, however reduced dependency was found for the wavelength combination I:532 nm-II:355 nm.

478

Localized model for systems with double-exchange coupling  

Science Journals Connector (OSTI)

Magnetic spins in crystals of mixed valence can simultaneously experience two kinds of coupling: the superexchange and the double exchange. The latter coupling, first invoked by Zener and further worked out by Anderson and Hasegawa, is mediated by additional electrons or holes introduced into the system. In the present paper an effective site-spins interaction Hamiltonian for double exchange is formulated. This Hamiltonian involves ascending powers of the bilinear interaction S?i·S?j. The highest power is determined by the value of the site spin. Thus, for spin-½ the double exchange interaction looks like the ordinary Heisenberg-type coupling. Spin-1 Hamiltonian contains also a biquadratic coupling. Spin-32 includes a bicubic interaction, spin-2 a biquartic one, etc. It is argued that a localized description of systems with the double exchange is usually sufficient. The phase diagrams are entirely different from the one predicted by the semiclassical (large-spin) band theory proposed by de Gennes. The critical concentrations of the carriers are evaluated at T=0 K in the mean-field-theory approximation. An applied magnetic field is shown to have little influence on the strength of the double-exchange coupling. Spin configurations in the presence of the field are also discussed. Finally, a spin-wave theory for such systems is constructed.

M. Cieplak

1978-10-01T23:59:59.000Z

479

Systematic decomposition of the neutrinoless double beta decay operator  

E-Print Network [OSTI]

We discuss the systematic decomposition of the dimension nine neutrinoless double beta decay operator, focusing on mechanisms with potentially small contributions to neutrino mass, while being accessible at the LHC. We first provide a (d=9 tree-level) complete list of diagrams for neutrinoless double beta decay. From this list one can easily recover all previously discussed contributions to the neutrinoless double beta decay process, such as the celebrated mass mechanism or "exotics", such as contributions from left-right symmetric models, R-parity violating supersymmetry and leptoquarks. More interestingly, however, we identify a number of new possibilities which have not been discussed in the literature previously. Contact to earlier works based on a general Lorentz-invariant parametrisation of the neutrinoless double beta decay rate is made, which allows, in principle, to derive limits on all possible contributions. We furthermore discuss possible signals at the LHC for mediators leading to the short-range part of the amplitude with one specific example. The study of such contributions would gain particular importance if there were a tension between different measurements of neutrino mass such as coming from neutrinoless double beta decay and cosmology or single beta decay.

Florian Bonnet; Martin Hirsch; Toshihiko Ota; Walter Winter

2012-12-13T23:59:59.000Z

480

What can we learn from the breaking of the Wandzura-Wilczek relation?  

E-Print Network [OSTI]

We review the study the Wandzura-Wilczek relation for the structure function g_2, with a particular attention on the connection with the framework of Transverse Momentum Dependent factorization. We emphasize that the relation is broken by two distinct twist-3 terms. In the light of these findings, we clarify what can be deduced from the available experimental data on g_2, which indicate a breaking of the order 20-40%, and how to individually measure the twist-3 terms.

Alberto Accardi; Alessandro Bacchetta; Marc Schlegel

2009-05-19T23:59:59.000Z

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481

Cosmic strings, zero modes, and supersymmetry breaking in non-Abelian N=1 gauge theories  

Science Journals Connector (OSTI)

We investigate the microphysics of cosmic strings in non-Abelian gauge theories with N=1 supersymmetry. We give the vortex solutions in a specific example and demonstrate that fermionic superconductivity arises because of the couplings and interactions dictated by supersymmetry. We then use supersymmetry transformations to obtain the relevant fermionic zero modes and investigate the role of soft supersymmetry breaking on the existence and properties of the superconducting strings.

Stephen C. Davis; Anne-Christine Davis; Mark Trodden

1998-04-15T23:59:59.000Z

482

On the breaking and restoration of symmetries within the nuclear energy density functional formalism  

E-Print Network [OSTI]

We review the notion of symmetry breaking and restoration within the frame of nuclear energy density functional methods. We focus on key differences between wave-function- and energy-functional-based methods. In particular, we point to difficulties encountered within the energy functional framework and discuss new potential constraints on the underlying energy density functional that could make the restoration of broken symmetries better formulated within such a formalism. We refer to Ref.~\\cite{duguet10a} for details.

T. Duguet; J. Sadoudi

2010-10-19T23:59:59.000Z

483

Cosmological moduli problem and oscillating inflation in gauge-mediated supersymmetry breaking  

Science Journals Connector (OSTI)

We investigate cosmological moduli problem in the gauge-mediated supersymmetry breaking (GMSB). A mini-inflation (oscillating inflation) takes place when a scalar field corresponding to the flat direction in GMSB oscillates along the logarithmic potential induced by the gauge-mediation mechanism. It is shown that this oscillating inflation can sufficiently dilute the relic abundance of the string moduli for some ranges of parameters in the GMSB models.

T. Asaka; M. Kawasaki; Masahide Yamaguchi

1999-01-01T23:59:59.000Z

484

Watching Hydrogen Bonds Break: A Transient Absorption Study of Water Tobias Steinel, John B. Asbury, Junrong Zheng, and M. D. Fayer*  

E-Print Network [OSTI]

Watching Hydrogen Bonds Break: A Transient Absorption Study of Water Tobias Steinel, John B. Asbury of picoseconds, observe hydrogen bond breaking and monitor the equilibration of the hydrogen bond network in water. In addition, the vibrational lifetime, the time constant for hydrogen bond breaking, and the rate

Fayer, Michael D.

485

A Parametric Study of a Large Break in Reactor Inlet Header of CANDU6 Reactors Using RELAP5 Code  

SciTech Connect (OSTI)

A large break loss of coolant accident in a CANDU can lead to degraded fuel cooling in a large number of fuel channels due to the apparition of a prolonged flow stagnation period in the downstream core pass. The paper presents a parametric study of a reactor inlet header break. The parametric survey includes: the size of the break, the choked flow model employed, the emergency core cooling (ECC) performance and the core nodalization. The study is performed with RELAP5/SCDAP mod 3.4 and the results are compared with the safety analysis results. (authors)

Prisecaru, Ilie; Dupleac, Daniel; Ghitescu, Petre [Power Plant Engineering Faculty, Politehnica Univ., 313 Splaiul Independentei, Bucharest (Romania); Biro, Lucian [National Commission for Nuclear Activities Control, 14 Libertatii Blvd., Bucharest (Romania)

2006-07-01T23:59:59.000Z

486

Head/tail Breaks for Visualization of City Structure and Dynamics  

E-Print Network [OSTI]

The things surrounding us vary dramatically, which implies that there are far more small things than large ones, e.g., far more small cities than large ones in the world. This dramatic variation is often referred to as fractal or scaling. To better reveal the fractal or scaling structure, a new classification scheme, namely head/tail breaks, has been developed to recursively derive different classes or hierarchical levels. The head/tail breaks works as such: divide things into a few large ones in the head (those above the average) and many small ones (those below the average) in the tail, and recursively continue the dividing process for the large ones (or the head) until the notion of far more small things than large ones has been violated. This paper attempts to argue that head/tail breaks can be a powerful visualization tool for illustrating structure and dynamics of natural cities. Natural cities refer to naturally or objectively defined human settlements based on a meaningful cutoff averaged from a massi...

Jiang, Bin

2015-01-01T23:59:59.000Z

487

Dual Ginzburg-Landau theory for confinement and chiral symmetry breaking  

Science Journals Connector (OSTI)

We introduce the dual Ginzburg-Landau (DGL) theory as a low energy effective theory of QCD. We study color confinement and dynamical chiral symmetry breaking of nonperturbative QCD by using the DGL theory, where color monopole and its condensation play an essential role on the nonperturbative dynamics in the infrared region. As a result of the dual Meissner effect, the linear static quark potential, which characterizes the quark confinement, is obtained in the long distance. We investigate then the dynamical chiral symmetry breaking by using the Schwinger-Dyson equation, where the gluon propagator includes the nonperturbative effect related to monopole condensation. We find a large enhancement of the chiral-symmetry breaking when the dual Meissner effect takes place. We study the recovery of the chiral symmetry and the deconfinement at finite temperature in the DGL theory. We discuss then the essential assumption of the DGL theory, which is the abelian dominance for the infrared physics, in the maximal abelian (MA) gauge in lattice QCD. The lattice QCD simulation demonstrates that the non-abelian gluons have a finite mass of order of 1 GeV in the MA gauge. We introduce further the instanton configuration as the source of the color monopole. In the MA gauge, a monopole circles around an instanton and with the increase of the instanton density, the monopole loop connects many instantons and a complicated monopole loop covers the whole 4 dimensional space. This study indicates that instantons may be playing an essential role even for color confinement.

H. Toki; H. Suganuma

2000-01-01T23:59:59.000Z

488

3D Simulation of Dam-break effect on a Solid Wall using Smoothed Particle Hydrodynamics  

E-Print Network [OSTI]

Dam is built for water supply, water flow or flooding control and electricity energy storage, but in other hand, dam is one of the most dangerous natural disaster in many countries including in Indonesia. The impact of dam break in neighbour area and is huge and many flooding in remote area, as happen in Dam Situ Gintung in Tangerang (close to Jakarta) in 2009. Smoothed Particle Hydrodynamics (SPH), is one of numerical method based on Lagrangian grid which is ap- plied in astrophysical simulation may be used to solve the simulation on dam break effect. The development of SPH methods become alternative methods to solving Navier Stokes equation, which is main key in fluid dynamic simulation. In this paper, SPH is developed for supporting solid par- ticles in use for 3D dam break effect (3D-DBE) simulation. Solid particle have been treated same as fluid particles with additional calculation for converting gained position became translation and rotation of solid object in a whole body. With this capability, the r...

Suprijadi,; Naa, Christian; Putra, Anggy Trisnawan

2013-01-01T23:59:59.000Z

489

The structural break and elasticity of coal demand in China: empirical findings from 1980-2006  

Science Journals Connector (OSTI)

Coal is the principal primary energy source in China. Research on coal demand is vital for informing China's economic development. In this paper, the theoretical structural break of coal demand was tested using annual time series data from 1980 to 2006. Results indicate that coal demand underwent an intercept structural break during the period 1997-2000 (from ?0.536 breaking to ?0.702). Then long- and short-term relationships between coal demand, income variability, coal price and oil price were explored using a time series modelling technique. Simultaneously, the elasticities of coal demand were tested with respect to income, coal price and oil price. Evidence suggests that the long-run elasticities are 0.560, ?1.161 and 0.733 respectively; with short-term elasticities being 0.716, ?0.067 and 0.017. The conclusion is that there is an integrated relationship between coal demand, income variability, coal price and oil price. China's coal demand will be influenced by the relationship in future. However, the influence from the change in coal price and oil price in the short term are ?0.067 and 0.017, and are insignificant from zero in statistics. This may predicate the unreasonableness existing in the mechanism of China's primary energy pricing. That is, the price of primary energy cannot effectively develop the function of allocating resources.

Jian-Ling Jiao; Ying Fan; Yi-Ming Wei

2009-01-01T23:59:59.000Z

490

NREL: News Feature - Nation Could Double Energy Productivity  

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

Nation Could Double Energy Productivity Nation Could Double Energy Productivity February 7, 2013 Photo of NREL Director Dan Arvizu speaking at NREL. Enlarge image NREL Director Dan Arvizu and a blue-ribbon panel of 20 energy experts said that the United States can double its energy productivity by 2030 - and do so in ways that bolster the nation's economy. In this photo, Arvizu speaks to commercial building stakeholders at NREL. Credit: Dennis Schroeder Researchers at the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) have long understood that using energy more efficiently can be just as beneficial as finding new ways to produce energy more efficiently. On Feb. 7, NREL Director Dan Arvizu and a blue-ribbon panel of 20 energy experts drove that message home, declaring that the United States can

491

CIRCUMSTELLAR ABSORPTION IN DOUBLE DETONATION TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

Upon formation, degenerate He core white dwarfs are surrounded by a radiative H-rich layer primarily supported by ideal gas pressure. In this Letter, we examine the effect of this H-rich layer on mass transfer in He+C/O double white dwarf binaries that will eventually merge and possibly yield a Type Ia supernova (SN Ia) in the double detonation scenario. Because its thermal profile and equation of state differ from the underlying He core, the H-rich layer is transferred stably onto the C/O white dwarf prior to the He core's tidal disruption. We find that this material is ejected from the binary system and sweeps up the surrounding interstellar medium hundreds to thousands of years before the SN Ia. The close match between the resulting circumstellar medium profiles and values inferred from recent observations of circumstellar absorption in SNe Ia gives further credence to the resurgent double detonation scenario.

Shen, Ken J. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Guillochon, James [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Foley, Ryan J., E-mail: kenshen@astro.berkeley.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-06-20T23:59:59.000Z

492

Q value of the 100Mo Double-Beta Decay  

E-Print Network [OSTI]

Penning trap measurements using mixed beams of 100Mo - 100Ru and 76Ge - 76Se have been utilized to determine the double-beta decay Q-values of 100Mo and 76Ge with uncertainties less than 200 eV. The value for 76Ge, 2039.04(16) keV is in agreement with the published SMILETRAP value. The new value for 100Mo, 3034.40(17) keV is 30 times more precise than the previous literature value, sufficient for the ongoing neutrinoless double-beta decay searches in 100Mo. Moreover, the precise Q-value is used to calculate the phase-space integrals and the experimental nuclear matrix element of double-beta decay.

S. Rahaman; V. -V. Elomaa; T. Eronen; J. Hakala; A. Jokinen; J. Julin; A. Kankainen; A. Saastamoinen; J. Suhonen; C. Weber; J. Äystö

2007-12-20T23:59:59.000Z

493

HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT SEISMIC ANALYSIS OF HANFORD DOUBLE SHELL TANKS  

SciTech Connect (OSTI)

M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratories (PNNL) to perform seismic analysis of the Hanford Site Double-Shell Tanks (DSTs) in support of a project entitled Double-Shell Tank (DST) Integrity Project - DST Thermal and Seismic Analyses. The original scope of the project was to complete an up-to-date comprehensive analysis of record of the DST System at Hanford in support of Tri-Party Agreement Milestone M-48-14. The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). Although Milestone M-48-14 has been met, Revision I is being issued to address external review comments with emphasis on changes in the modeling of anchor bolts connecting the concrete dome and the steel primary tank. The work statement provided to M&D (PNNL 2003) required that a nonlinear soil structure interaction (SSI) analysis be performed on the DSTs. The analysis is required to include the effects of sliding interfaces and fluid sloshing (fluid-structure interaction). SSI analysis has traditionally been treated by frequency domain computer codes such as SHAKE (Schnabel, et al. 1972) and SASSI (Lysmer et al. 1999a). Such frequency domain programs are limited to the analysis of linear systems. Because of the contact surfaces, the response of the DSTs to a seismic event is inherently nonlinear and consequently outside the range of applicability of the linear frequency domain programs. That is, the nonlinear response of the DSTs to seismic excitation requires the use of a time domain code. The capabilities and limitations of the commercial time domain codes ANSYS{reg_sign} and MSC Dytran{reg_sign} for performing seismic SSI analysis of the DSTs and the methodology required to perform the detailed seismic analysis of the DSTs has been addressed in Rinker et al (2006a). On the basis of the results reported in Rinker et al. (2006a), it is concluded that time-domain SSI analysis using ANSYS{reg_sign} is justified for predicting the global response of the DSTs. The most significant difference between the current revision (Revision 1) of this report and the original issue (Revision 0) is the treatment of the anchor bolts that tie the steel dome of the primary tank to the concrete tank dome.

MACKEY TC; RINKER MW; CARPENTER BG; HENDRIX C; ABATT FG

2009-01-15T23:59:59.000Z

494

HANFORD DOUBLE SHELL TANK (DST) THERMAL & SEISMIC PROJECT SEISMIC ANALYSIS OF HANFORD DOUBLE SHELL TANKS  

SciTech Connect (OSTI)

M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratory (PNNL) to perform seismic analysis of the Hanford Site double-shell tanks (DSTs) in support of a project entitled ''Double-Shell Tank (DSV Integrity Project--DST Thermal and Seismic Analyses)''. The overall scope of the project is to complete an up-to-date comprehensive analysis of record of the DST system at Hanford in support of Tri-Party Agreement Milestone M-48-14, The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). The work statement provided to M&D (PNNL 2003) required that the seismic analysis of the DSTs assess the impacts of potentially non-conservative assumptions in previous analyses and account for the additional soil mass due to the as-found soil density increase, the effects of material degradation, additional thermal profiles applied to the full structure including the soil-structure response with the footings, the non-rigid (low frequency) response of the tank roof, the asymmetric seismic-induced soil loading, the structural discontinuity between the concrete tank wall and the support footing and the sloshing of the tank waste. The seismic analysis considers the interaction of the tank with the surrounding soil and the effects of the primary tank contents. The DSTs and the surrounding soil are modeled as a system of finite elements. The depth and width of the soil incorporated into the analysis model are sufficient to obtain appropriately accurate analytical results. The analyses required to support the work statement differ from previous analysis of the DSTs in that the soil-structure interaction (SSI) model includes several (nonlinear) contact surfaces in the tank structure, and the contained waste must be modeled explicitly in order to capture the fluid-structure interaction behavior between the primary tank and contained waste.

MACKEY, T.C.

2006-03-17T23:59:59.000Z

495

Investigation of structure and properties of the Nb rods manufactured by different deformation and heat treatment regimes in mass production conditions for the Nb{sub 3}Sn strands  

SciTech Connect (OSTI)

From 2009 the mass production of the Nb{sub 3}Sn strands for ITER with the yield of several tens of tons per year operates at JSC Chepetsky Mechanical Plant (Glazov, Russia). In order to enhance the stability of output characteristics of the produced Nb{sub 3}Sn strands, to increase the Nb filaments dimensional homogeneity the manufacture regimes improvement of the used semiproducts such as Nb rods intended for the superconducting filaments formation in the finished strands has been carried out. In the work the investigations of the Nb rheological behavior, the influence of heat treatment in the wide temperature range from 700 to 1300 °C on the predeformed Nb rods structure and mechanical properties have been performed. Different production routes of the Nb rods, including such operations like forging, extrusion and drawing combined with the recrystallization annealings, were used. Composite Nb{sub 3}Sn strands have been produced and their electrophysical properties have been tested. For the first time influence of the niobium rods manufacture regimes on the current carrying capacity of the industrial Nb{sub 3}Sn strands has been investigated.

Abdyukhanov, I. M.; Vorobieva, A. E.; Alekseev, M. V.; Mareev, K. A.; Dergunova, E. A.; Peredkova, T. N. [JSC Bochvar High-Technology Research Institute of Inorganic Materials, 5a Rogova St., Moscow, 123060 (Russian Federation); Shikov, A. K. [NRC Kurchatov Institute, 1 Akademika Kurchatova Sq., Moscow, 123182 (Russian Federation); Utkin, K. V.; Vorobieva, A. V.; Kharkovsky, D. N. [JSC Chepetsky Mechanical Plant, 7 Belova St., Glazov, 427620 (Russian Federation)

2014-01-27T23:59:59.000Z

496

Implementation of Double-Waist Chicane Optics in SPEAR3  

SciTech Connect (OSTI)

The SPEAR3 accelerator upgrade opened up two 7.6m racetrack straights in the magnet lattice. In one of these straights, we recently added a magnetic chicane to separate two insertion device (ID) beam lines by 10mrad. A quadrupole triplet in the center creates a ''double focus'' optics with {beta}y = 1.6m at the middle of each ID, hence the term ''double-waist chicane''. The new optics also reduced {beta}y in the four matching straights adjacent to the racetrack straights to 2.5m. In this paper, we outline design features of the optics and physical implementation of the lattice.

Corbett, J.; Cornacchia, M.; Dao, T.; Dell'Orco, D.; Rafael, F.; Harrington, D.; Hettel, R.; Huang, X.; Nosochkov, Y.; Rabedeau, T.; Rarback, H.; Ringwall, A.; Safranek,; Scott, B.; Sebek, J.; Tanabe, J.; Terebilo, A.; Wermelskirchen, C.; Widmeyer, M.; /SLAC, SSRL; Yoon, Moohyun; /POSTECH

2006-08-16T23:59:59.000Z

497

The fabrication of double shell targets for NOVA  

SciTech Connect (OSTI)

At scales appropriate to the National Ignition Facility, calculations indicate double shell capsules reach ignition conditions with room temperature fuel. Los Alamos is laying the groundwork for these double shell ignition targets with a preliminary campaign on Nova. The target design features a 260 {micro}m O.D. inner glass capsule with an I.D. of approximately 200 {micro}m, containing deuterium gas, centered inside a machined polymer shell. The central capsule was supported either with a 30 mg/cc foam or with two polymer films, each less than 0.1 {micro}m in thickness. The materials, machining, assembly, and characterization of the targets are discussed.

Duke, J.R.; Elliott, N.E.; Moore, J.E.; Gomez, V.M.; Manzanares, R.; Rivera, G.; Watt, R.; Varnum, W.S.; Gobby, P.L. [Los Alamos National Lab., NM (United States)

1999-03-01T23:59:59.000Z

498

Progress toward Ignition with Noncryogenic Double-Shell Capsules  

SciTech Connect (OSTI)

Inertial confinement fusion implosions using capsules with two concentric shells separated by a low density region (double shells) are reported which closely follow one dimensional (1D) radiatively driven hydrodynamics simulations. Capsule designs which mitigate Au M -band radiation asymmetries appear to correspond more closely to 1D simulations than targets lacking mitigation of hohlraum drive M -band nonuniformities. One capsule design achieves over 50% of the unperturbed 1D calculated yield at a convergence ratio of 25.5, comparable to that of a double-shell design for an ignition capsule at the National Ignition Facility. (c) 2000 The American Physical Society.

Varnum, W. S.; Delamater, N. D.; Evans, S. C.; Gobby, P. L.; Moore, J. E.; Wallace, J. M.; Watt, R. G.; Colvin, J. D.; Turner, R.; Glebov, V. (and others) [and others

2000-05-29T23:59:59.000Z

499

Microconvection effects at double?diffusive gradient zone boundaries  

Science Journals Connector (OSTI)

Microconvection in double?diffusive gradient zones is predicted to occur near the zone boundaries because of effects of boundary undulation and temperature modulation caused by impinging thermals in adjacent convecting zones. The equations that govern convective motion in a double?diffusive horizontal slab are solved for boundary conditions that incorporate these effects. Solution of these equations predicts a weakened salinity gradient near the gradient zone boundary between the rising thermals. When the salinity gradient is too weak instability occurs taking the form of descending plumes which are seen in experiments.

John R. Hull; Yojana Katti

1988-01-01T23:59:59.000Z

500

Empirical Survey of Neutrinoless Double Beta Decay Matrix Elements  

E-Print Network [OSTI]

Neutrinoless double beta decay has been the subject of intensive theoretical work as it represents the only practical approach to discovering whether neutrinos are Majorana particles or not, and whether lepton number is a conserved quantum number. Available calculations of matrix elements and phase-space factors are reviewed from the perspective of a future large-scale experimental search for neutrinoless double beta decay. Somewhat unexpectedly, a uniform inverse correlation between phase space and the square of the nuclear matrix element emerges. As a consequence, no isotope is either favored or disfavored; all have qualitatively the same decay rate per unit mass for any given value of the Majorana mass.

R. G. H. Robertson

2013-01-07T23:59:59.000Z