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  • Mice  (183)
  • Lunar and Planetary Science and Exploration  (72)
  • Plasma and Beam Physics  (71)
  • Astrophysics  (70)
  • Models, Molecular
  • 2010-2014  (436)
  • 2013  (436)
  • 1
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    Parameter Estimation for Compact Binary Coalescence Signals with the First Generation Gravitational-Wave Detector Network (2013)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational-wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model selection are crucial analysis steps for any detection candidate events. Detailed models of the anticipated waveforms enable inference on several parameters, such as component masses, spins, sky location and distance, that are essential for new astrophysical studies of these sources. However, accurate measurements of these parameters and discrimination of models describing the underlying physics are complicated by artifacts in the data, uncertainties in the waveform models and in the calibration of the detectors. Here we report such measurements on a selection of simulated signals added either in hardware or software to the data collected by the two LIGO instruments and the Virgo detector during their most recent joint science run, including a blind injection where the signal was not initially revealed to the collaboration. We exemplify the ability to extract information about the source physics on signals that cover the neutron-star and black-hole binary parameter space over the component mass range 1M25M and the full range of spin parameters. The cases reported in this study provide a snapshot of the status of parameter estimation in preparation for the operation of advanced detectors.
    Keywords: Astrophysics
    Type: GSFC-E-DAA-TN12729 , Physical Review D (ISSN 2470-0010) (e-ISSN 2470-0029); 88; 062001
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  • 2
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    Curiosity at Gale Crater, Mars: Characterization and Analysis of the Rocknest Sand Shadow (2013)
    In:  CASI
    Details
    Publication Date: 2014-11-22
    Description: The Rocknest aeolian deposit is similar to aeolian features analyzed by the Mars Exploration Rovers (MER) Spirit and Opportunity. The fraction of sand 〈150 micron in size contains approx. 55% crystalline material consistent with a basaltic heritage, and approx. 45% X-ray amorphous material. The amorphous component of Rocknest is Fe-rich and Si-poor, and is the host of the volatiles (H2O, O2, SO2, CO2, and Cl) detected by the Surface Analysis at Mars (SAM) instrument and of the fine-grained nanophase oxide (npOx) component first described from basaltic soils analyzed by MER. The similarity between soils and aeolian materials analyzed at Gusev crater, Meridiani Planum and Gale crater implies locally sourced, globally similar basaltic materials, or globally and regionally sourced basaltic components deposited locally at all three locations.
    Keywords: Lunar and Planetary Science and Exploration
    Type: ARC-E-DAA-TN11260
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  • 3
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    Structure and Dynamics of Colliding Plasma Jets (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-12-04
    Description: Author(s): C. K. Li, D. D. Ryutov, S. X. Hu, M. J. Rosenberg, A. B. Zylstra, F. H. Séguin, J. A. Frenje, D. T. Casey, M. Gatu Johnson, M. J.-E. Manuel, H. G. Rinderknecht, R. D. Petrasso, P. A. Amendt, H. S. Park, B. A. Remington, S. C. Wilks, R. Betti, D. H. Froula, J. P. Knauer, D. D. Meyerhofer, R. P. Drake, C. C. Kuranz, R. Young, and M. Koenig Monoenergetic-proton radiographs of laser-generated, high-Mach-number plasma jets colliding at various angles shed light on the structures and dynamics of these collisions. The observations compare favorably with results from 2D hydrodynamic simulations of multistream plasma jets, and also with resu... [Phys. Rev. Lett. 111, 235003] Published Tue Dec 03, 2013
    Keywords: Plasma and Beam Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    The African coelacanth genome provides insights into tetrapod evolution (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-04-20
    Description: The discovery of a living coelacanth specimen in 1938 was remarkable, as this lineage of lobe-finned fish was thought to have become extinct 70 million years ago. The modern coelacanth looks remarkably similar to many of its ancient relatives, and its evolutionary proximity to our own fish ancestors provides a glimpse of the fish that first walked on land. Here we report the genome sequence of the African coelacanth, Latimeria chalumnae. Through a phylogenomic analysis, we conclude that the lungfish, and not the coelacanth, is the closest living relative of tetrapods. Coelacanth protein-coding genes are significantly more slowly evolving than those of tetrapods, unlike other genomic features. Analyses of changes in genes and regulatory elements during the vertebrate adaptation to land highlight genes involved in immunity, nitrogen excretion and the development of fins, tail, ear, eye, brain and olfaction. Functional assays of enhancers involved in the fin-to-limb transition and in the emergence of extra-embryonic tissues show the importance of the coelacanth genome as a blueprint for understanding tetrapod evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3633110/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3633110/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amemiya, Chris T -- Alfoldi, Jessica -- Lee, Alison P -- Fan, Shaohua -- Philippe, Herve -- Maccallum, Iain -- Braasch, Ingo -- Manousaki, Tereza -- Schneider, Igor -- Rohner, Nicolas -- Organ, Chris -- Chalopin, Domitille -- Smith, Jeramiah J -- Robinson, Mark -- Dorrington, Rosemary A -- Gerdol, Marco -- Aken, Bronwen -- Biscotti, Maria Assunta -- Barucca, Marco -- Baurain, Denis -- Berlin, Aaron M -- Blatch, Gregory L -- Buonocore, Francesco -- Burmester, Thorsten -- Campbell, Michael S -- Canapa, Adriana -- Cannon, John P -- Christoffels, Alan -- De Moro, Gianluca -- Edkins, Adrienne L -- Fan, Lin -- Fausto, Anna Maria -- Feiner, Nathalie -- Forconi, Mariko -- Gamieldien, Junaid -- Gnerre, Sante -- Gnirke, Andreas -- Goldstone, Jared V -- Haerty, Wilfried -- Hahn, Mark E -- Hesse, Uljana -- Hoffmann, Steve -- Johnson, Jeremy -- Karchner, Sibel I -- Kuraku, Shigehiro -- Lara, Marcia -- Levin, Joshua Z -- Litman, Gary W -- Mauceli, Evan -- Miyake, Tsutomu -- Mueller, M Gail -- Nelson, David R -- Nitsche, Anne -- Olmo, Ettore -- Ota, Tatsuya -- Pallavicini, Alberto -- Panji, Sumir -- Picone, Barbara -- Ponting, Chris P -- Prohaska, Sonja J -- Przybylski, Dariusz -- Saha, Nil Ratan -- Ravi, Vydianathan -- Ribeiro, Filipe J -- Sauka-Spengler, Tatjana -- Scapigliati, Giuseppe -- Searle, Stephen M J -- Sharpe, Ted -- Simakov, Oleg -- Stadler, Peter F -- Stegeman, John J -- Sumiyama, Kenta -- Tabbaa, Diana -- Tafer, Hakim -- Turner-Maier, Jason -- van Heusden, Peter -- White, Simon -- Williams, Louise -- Yandell, Mark -- Brinkmann, Henner -- Volff, Jean-Nicolas -- Tabin, Clifford J -- Shubin, Neil -- Schartl, Manfred -- Jaffe, David B -- Postlethwait, John H -- Venkatesh, Byrappa -- Di Palma, Federica -- Lander, Eric S -- Meyer, Axel -- Lindblad-Toh, Kerstin -- 095908/Wellcome Trust/United Kingdom -- MC_U137761446/Medical Research Council/United Kingdom -- P42 ES007381/ES/NIEHS NIH HHS/ -- R01 ES006272/ES/NIEHS NIH HHS/ -- R01 HG003474/HG/NHGRI NIH HHS/ -- R01 OD011116/OD/NIH HHS/ -- R24 OD011199/OD/NIH HHS/ -- R24 RR032670/RR/NCRR NIH HHS/ -- R37 HD032443/HD/NICHD NIH HHS/ -- U54 HG003067/HG/NHGRI NIH HHS/ -- England -- Nature. 2013 Apr 18;496(7445):311-6. doi: 10.1038/nature12027.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Genetics Program, Benaroya Research Institute, Seattle, Washington 98101, USA. camemiya@benaroyaresearch.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23598338" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; *Biological Evolution ; Chick Embryo ; Conserved Sequence/genetics ; Enhancer Elements, Genetic/genetics ; Evolution, Molecular ; Extremities/anatomy & histology/growth & development ; Fishes/anatomy & histology/*classification/*genetics/physiology ; Genes, Homeobox/genetics ; Genome/*genetics ; Genomics ; Immunoglobulin M/genetics ; Mice ; Molecular Sequence Annotation ; Molecular Sequence Data ; Phylogeny ; Sequence Alignment ; Sequence Analysis, DNA ; Vertebrates/anatomy & histology/genetics/physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 5
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    The Interplanetary Network Supplement to the Fermi Gbm Catalog of Cosmic Gamma-Ray Bursts (2013)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: We present Interplanetary Network (IPN) data for the gamma-ray bursts in the first Fermi Gamma-Ray BurstMonitor (GBM) catalog. Of the 491 bursts in that catalog, covering 2008 July 12 to 2010 July 11, 427 wereobserved by at least one other instrument in the nine-spacecraft IPN. Of the 427, the localizations of 149 could beimproved by arrival time analysis (or triangulation). For any given burst observed by the GBM and one otherdistant spacecraft, triangulation gives an annulus of possible arrival directions whose half-width varies betweenabout 0. 4 and 32, depending on the intensity, time history, and arrival direction of the burst, as well as the distancebetween the spacecraft. We find that the IPN localizations intersect the 1 GBM error circles in only 52 of thecases, if no systematic uncertainty is assumed for the latter. If a 6 systematic uncertainty is assumed and added inquadrature, the two localization samples agree about 87 of the time, as would be expected. If we then multiply theresulting error radii by a factor of three, the two samples agree in slightly over 98 of the cases, providing a goodestimate of the GBM 3 error radius. The IPN 3 error boxes have areas between about 1 arcmin2 and 110 deg2,and are, on the average, a factor of 180 smaller than the corresponding GBM localizations. We identify two burstsin the IPNGBM sample that did not appear in the GBM catalog. In one case, the GBM triggered on a terrestrialgamma flash, and in the other, its origin was given as uncertain. We also discuss the sensitivity and calibration ofthe IPN.
    Keywords: Astrophysics
    Type: GSFC-E-DAA-TN12083 , The Astrophysical Journal Supplement Series (ISSN 0067-0049) (e-ISSN 1538-4365); 207; 2
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  • 6
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    Laser-Beam Zooming to Mitigate Crossed-Beam Energy Losses in Direct-Drive Implosions (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-04-02
    Description: Author(s): I. V. Igumenshchev, D. H. Froula, D. H. Edgell, V. N. Goncharov, T. J. Kessler, F. J. Marshall, R. L. McCrory, P. W. McKenty, D. D. Meyerhofer, D. T. Michel, T. C. Sangster, W. Seka, and S. Skupsky Spherically symmetric direct-drive-ignition designs driven by laser beams with a focal-spot size nearly equal to the target diameter suffer from energy losses due to crossed-beam energy transfer (CBET). Significant reduction of CBET and improvements in implosion hydrodynamic efficiency can be achiev... [Phys. Rev. Lett. 110, 145001] Published Mon Apr 01, 2013
    Keywords: Plasma and Beam Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
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  • 7
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    Translating dosage compensation to trisomy 21 (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-07-19
    Description: Down's syndrome is a common disorder with enormous medical and social costs, caused by trisomy for chromosome 21. We tested the concept that gene imbalance across an extra chromosome can be de facto corrected by manipulating a single gene, XIST (the X-inactivation gene). Using genome editing with zinc finger nucleases, we inserted a large, inducible XIST transgene into the DYRK1A locus on chromosome 21, in Down's syndrome pluripotent stem cells. The XIST non-coding RNA coats chromosome 21 and triggers stable heterochromatin modifications, chromosome-wide transcriptional silencing and DNA methylation to form a 'chromosome 21 Barr body'. This provides a model to study human chromosome inactivation and creates a system to investigate genomic expression changes and cellular pathologies of trisomy 21, free from genetic and epigenetic noise. Notably, deficits in proliferation and neural rosette formation are rapidly reversed upon silencing one chromosome 21. Successful trisomy silencing in vitro also surmounts the major first step towards potential development of 'chromosome therapy'.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3848249/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3848249/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jiang, Jun -- Jing, Yuanchun -- Cost, Gregory J -- Chiang, Jen-Chieh -- Kolpa, Heather J -- Cotton, Allison M -- Carone, Dawn M -- Carone, Benjamin R -- Shivak, David A -- Guschin, Dmitry Y -- Pearl, Jocelynn R -- Rebar, Edward J -- Byron, Meg -- Gregory, Philip D -- Brown, Carolyn J -- Urnov, Fyodor D -- Hall, Lisa L -- Lawrence, Jeanne B -- 1F32CA154086/CA/NCI NIH HHS/ -- 2T32HD007439/HD/NICHD NIH HHS/ -- F32 CA154086/CA/NCI NIH HHS/ -- GM053234/GM/NIGMS NIH HHS/ -- GM085548/GM/NIGMS NIH HHS/ -- GM096400 RC4/GM/NIGMS NIH HHS/ -- MOP-13680/Canadian Institutes of Health Research/Canada -- R01 GM053234/GM/NIGMS NIH HHS/ -- R01 GM085548/GM/NIGMS NIH HHS/ -- RC4 GM096400/GM/NIGMS NIH HHS/ -- T32 HD007439/HD/NICHD NIH HHS/ -- England -- Nature. 2013 Aug 15;500(7462):296-300. doi: 10.1038/nature12394. Epub 2013 Jul 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, Massachusetts 01655, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23863942" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cell Proliferation ; Chromosomes, Human, Pair 21/*genetics ; DNA Methylation ; *Dosage Compensation, Genetic ; Down Syndrome/*genetics/therapy ; Gene Silencing ; Humans ; Induced Pluripotent Stem Cells ; Male ; Mice ; Mutagenesis, Insertional ; Neurogenesis ; RNA, Long Noncoding/genetics/*metabolism ; Sex Chromatin/genetics ; X Chromosome Inactivation/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 8
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    Identification of a candidate therapeutic autophagy-inducing peptide (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-02-01
    Description: The lysosomal degradation pathway of autophagy has a crucial role in defence against infection, neurodegenerative disorders, cancer and ageing. Accordingly, agents that induce autophagy may have broad therapeutic applications. One approach to developing such agents is to exploit autophagy manipulation strategies used by microbial virulence factors. Here we show that a peptide, Tat-beclin 1-derived from a region of the autophagy protein, beclin 1, which binds human immunodeficiency virus (HIV)-1 Nef-is a potent inducer of autophagy, and interacts with a newly identified negative regulator of autophagy, GAPR-1 (also called GLIPR2). Tat-beclin 1 decreases the accumulation of polyglutamine expansion protein aggregates and the replication of several pathogens (including HIV-1) in vitro, and reduces mortality in mice infected with chikungunya or West Nile virus. Thus, through the characterization of a domain of beclin 1 that interacts with HIV-1 Nef, we have developed an autophagy-inducing peptide that has potential efficacy in the treatment of human diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3788641/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3788641/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shoji-Kawata, Sanae -- Sumpter, Rhea -- Leveno, Matthew -- Campbell, Grant R -- Zou, Zhongju -- Kinch, Lisa -- Wilkins, Angela D -- Sun, Qihua -- Pallauf, Kathrin -- MacDuff, Donna -- Huerta, Carlos -- Virgin, Herbert W -- Helms, J Bernd -- Eerland, Ruud -- Tooze, Sharon A -- Xavier, Ramnik -- Lenschow, Deborah J -- Yamamoto, Ai -- King, David -- Lichtarge, Olivier -- Grishin, Nick V -- Spector, Stephen A -- Kaloyanova, Dora V -- Levine, Beth -- K08 AI099150/AI/NIAID NIH HHS/ -- P30 CA142543/CA/NCI NIH HHS/ -- R01 GM066099/GM/NIGMS NIH HHS/ -- R01 GM079656/GM/NIGMS NIH HHS/ -- R01 GM094575/GM/NIGMS NIH HHS/ -- R01 NS050199/NS/NINDS NIH HHS/ -- R01 NS077111/NS/NINDS NIH HHS/ -- R01 NS084912/NS/NINDS NIH HHS/ -- R0I DK083756/DK/NIDDK NIH HHS/ -- R0I DK086502/DK/NIDDK NIH HHS/ -- R0I GM066099/GM/NIGMS NIH HHS/ -- R0I GM079656/GM/NIGMS NIH HHS/ -- R0I NS063973/NS/NINDS NIH HHS/ -- R0I NS077874/NS/NINDS NIH HHS/ -- RC1 DK086502/DK/NIDDK NIH HHS/ -- T32 GM008297/GM/NIGMS NIH HHS/ -- U54 AI057156/AI/NIAID NIH HHS/ -- U54AI057156/AI/NIAID NIH HHS/ -- U54AI057160/AI/NIAID NIH HHS/ -- Cancer Research UK/United Kingdom -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Feb 14;494(7436):201-6. doi: 10.1038/nature11866. Epub 2013 Jan 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23364696" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apoptosis Regulatory Proteins/*chemistry/metabolism/pharmacology/*therapeutic use ; Autophagy/*drug effects ; Cell Membrane Permeability ; Cells, Cultured ; Chikungunya virus/drug effects ; HIV-1/drug effects/metabolism/physiology ; HeLa Cells ; Humans ; Macrophages/cytology ; Membrane Proteins/*chemistry/metabolism/pharmacology/*therapeutic use ; Mice ; Molecular Sequence Data ; Peptide Fragments/*chemistry/metabolism/*pharmacology ; Recombinant Fusion Proteins/chemistry/metabolism/pharmacology ; Virus Replication/drug effects ; West Nile virus/drug effects ; nef Gene Products, Human Immunodeficiency Virus/metabolism ; tat Gene Products, Human Immunodeficiency Virus/genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
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    Observations of Modified Three-Dimensional Instability Structure for Imploding z-Pinch Liners that are Premagnetized with an Axial Field (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-12-04
    Description: Author(s): T. J. Awe, R. D. McBride, C. A. Jennings, D. C. Lamppa, M. R. Martin, D. C. Rovang, S. A. Slutz, M. E. Cuneo, A. C. Owen, D. B. Sinars, K. Tomlinson, M. R. Gomez, S. B. Hansen, M. C. Herrmann, J. L. McKenney, C. Nakhleh, G. K. Robertson, G. A. Rochau, M. E. Savage, D. G. Schroen, and W. A. Stygar Novel experimental data are reported that reveal helical instability formation on imploding z -pinch liners that are premagnetized with an axial field. Such instabilities differ dramatically from the mostly azimuthally symmetric instabilities that form on unmagnetized liners. The helical structure pe... [Phys. Rev. Lett. 111, 235005] Published Tue Dec 03, 2013
    Keywords: Plasma and Beam Physics
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    Topics: Physics
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  • 10
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    The Fermi All-Sky Variability Analysis: A List of Flaring Gamma-Ray Sources and the Search for Transients in our Galaxy (2013)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In this paper, we present the Fermi All-sky Variability Analysis (FAVA), a tool to systematically study the variability of the gamma-ray sky measured by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope.For each direction on the sky, FAVA compares the number of gamma-rays observed in a given time window to the number of gamma-rays expected for the average emission detected from that direction. This method is used in weekly time intervals to derive a list of 215 flaring gamma-ray sources. We proceed to discuss the 27 sources found at Galactic latitudes smaller than 10 and show that, despite their low latitudes, most of them are likely of extragalactic origin.
    Keywords: Astrophysics
    Type: GSFC-E-DAA-TN11301 , The Astrophysical Journal (ISSN 0004-637X); 771; 1; 57
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